Surface Water Supply of the United States 1958

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Part 14. Pacific Slope Basins in Oregon and Lower Columbia River Basin

Prepared under the direction of J. V. B. WELLS, Chief, Surface Water Branch

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1568

Prepared in cooperation with the States of Oregon and Washington and with other agencies

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1960 UNITED STATES DEPARTMENT OF THE INTERIOR

FRED A. SEATON, Secretary

GEOLOGICAL SURVEY

Thomas B. Nolan, Director

For sale by the Superintendent of Documents, U.S. Government Printing Office Washington 25, D.C. - Price $1 (paper cover) PREFACE

This report was prepared by the Geological Survey in coopera tion with the States of Oregon and Washington and with other agen cies, by personnel of the Water Resources Division, L. B. Leopold, chief, under the general direction of J. V. B. Wells, chief, Surface Water Branch, and F. J. Flynn, chief, Basic Records Section.

The data were collected and computed under supervision of dis trict engineers, Surface Water Branch, as follows:

K. N. Phillips...... >...... Portland, Oreg, F. M. Veatch ...... Jacoma, Wash.

Ill CALENDAR FOR WATER YEAR 1958

OCTOBER 1957 NOVEMBER 1957 DECEMBER 1957 5 M T W T F S S M T W T P S S M T W T P S 12345 1 2 1234567 6 7 8 9 10 11 12 3456789 8 9 10 11 12 13 14 13 14 15 16 17 18 19 10 11 12 13 14 15 16 15 16 17 18 19 20 21 20 21 22 23 24 25 26 17 18 19 20 21 22 23 22 23 24 25 26 27 28 27 28 29 30 31 24 25 26 27 28 29 30 29 30 31

JANUARY 1958 FEBRUARY 1958 MARCH 1958 S M T W T P S S M T W T P S S M T W T P S 1234 1 1 5 6 7 8 9 10 11 2345678 2345678 12 13 14 15 16 17 18 9 10 11 12 13 14 15 9 10 11 12 13 14 15 19 20 21 22 23 24 25 16 17 18 19 20 21 22 16 17 18 19 20 21 22 26 27 28 29 30 31 23 24 25 26 27 28 23 24 25 26 27 28 29 30 31 APRIL 1958 MAY 1958 JUNE 1958 5 M T W T P S S M T" W T P S S M T W T P S 12345 123 1234567 6 7 8 9 10 11 12 4 5 6 7 8 9 10 8 9 10 11 12 13 14 13 14 15 16 17 18 19 11 12 13 14 15 16 17 15 16 17 18 19 20 21 20 21 22 23 24 25 26 18 19 20 21 22 23 24 22 23 24 25 26 27 28 27 28 29 30 25 26 27 28 29 30 31 29 30

JULY 1958 AUGUST 1958 SEPTEMBER 1958 5 M T W T P S S M T W T P S S M T W T P S 12345 1 2 123456 6 7 8 9 10 11 12 3456789 7 8 9 10 11 12 13 13 14 15 16 17 18 19 10 11 12 13 14 15 16 14 15 16 17 18 19 20 20 21 22 23 24 25 26 17 18 19 20 21 22 23 21 22 23 24 25 26 27 27 28 29 30 31 24 25 26 27 28 29 30 28 29 30 31 IV CONTENTS

Scope of work...... 1 Cooperation...... 1 Division of work...... 2 Definition of terms and abbreviations...... 2 Downstream order and station numbers...... 3 Explanation of data...... 3 Accuracy of field data and computed results...... 7 Publications...... 8 Records of discharge collected by agencies other than the Geological Survey...... 10 Hydrologic conditions...... 12 Gaging-station records...... 13 Lowe: Columbia River basin Columbia River: Walla Walla River basin South Fork Walla Walla River near Milton, Oreg...... 13 North Pork Walla Walla River near Milton, Oreg...... 14 Walla Walla River: Mill Creek near Walla Walla, Wash...... 15 Blue Creek near Walla Walla, Wash...... 16 Mill Creek at Walla Walla, Wash...... 17 Dry Creek near Walla Walla, Wash...... 18 Touchet River: East Pork Touchet River near Dayton, Wash...... 19 Touchet River at Bolles, Wash...... 20 Walla Walla River near Touchet, Wash...... 21 Springs in the Walla Walla River basin, Oreg.-Wash...... 22 Umatilla River basin Umatilla River above Meacham Creek, near Gibbon, Oreg...... 24 Umatilla River at Pendleton, Oreg...... 25 McKay Creek near Pilot Rock, Oreg...... 26 McKay Reservoir near Pendleton, Oreg...... 27 McKay Creek near Pendleton, Oreg...... 28 Birch Creek at Rieth, Oreg...... 29 Umatilla River at Yoakum, Oreg...... 30 Butter Creek near Pine City, Oreg...... 31 Principal diversions from Umatilla River between Yoakum and Umatilla gaging stations, Oreg...... 32 Umatilla River near Umatilla, Oreg...... 33 Willow Creek basin Willow Creek at Heppner, Oreg...... 34 John Day River basin John Day River: Strawberry Creek above Slide Creek, near Prairie City, Oreg...... 35 John Day River at Prairie City, Oreg...... 36 John Day River at Picture Gorge, near Dayville, Oreg...... 37 North Pork John Day River: Desolation Creek near Dale, Oreg...... 38 North Pork John Day River near Dale, Oreg...... 39 Camas Creek near Lehman, Oreg...... 40 Camas Creek near Ukiah, Oreg...... 41 Middle Fork John Day River at Ritter, Oreg...... 42 Fox Creek at gorge, near Pox, Oreg...... 43 North Fork John Day River at Monument, Oreg...... 44 John Day River at Service Creek, Oreg...... 45 John Day River at McDonald Perry, Oreg...... 46 Deschutes River basin Deschutes River below Snow Creek, near Lapine, Oreg...... 47 Cultus River above Cultus Creek, near Lapine, Oreg...... 48 Cultus Creek above Crane Prairie Reservoir, near Lapine, Oreg...... 49 Deer Creek above Crane Prairie Reservoir, near Lapine, Oreg...... 50 Quinn River near Lapine, Oreg...... 51 Charlton Creek above Crane Prairie Reservoir, near Lapine, Oreg...... 52 Deschutes River below Crane Prairie Reservoir, near Lapine, Oreg...... 53 Brown Creek near Lapine, Oreg...... 54 Davis Lake basin (closed basin at head of Davis Creek): Odell Creek near Crescent, Oreg...... 55 Deschutes River below Wickiup Reservoir, near Lapine, Oreg...... 56 Pall River near Lapine, Oreg...... 57 Little Deschutes River: Crescent Creek at Crescent Lake, near Crescent, Oreg...... 58 Little Deschutes River near Lapine, Oreg...... 59 Reservoirs in Deschutes River basin above Bend, Oreg...... 60 Deschutes River at Benham Palls, near Bend, Oreg...... 61 Deschutes River below Lava Island, near Bend, Oreg...... 62 Diversions from Deschutes River near Bend, Oreg...... 63 Deschutes River below Bend, Oreg...... 64 Tumalo Creek near Bend, Oreg...... 65 Squaw Creek near Sisters, Oreg...... 66 Deschutes River near Culver, Oreg...... 67 Beaver Creek (head of Crooked River) near Paulina, Oreg...... 68 Crooked River near Post, Oreg...... 69 Crooked River above Hoffman Dam, near Prineville, Oreg...... 70 V VI CONTENTS

Gaging-station records Continued Columbia River basin Continued Deschutes River basin Continued Page Crooked River near Culver, Oreg...... 71 Metolius River: Lake Creek near Sisters, Oreg...... 72 Metolius River near Grandview, Oreg...... 73 Deschutes River near Madras, Oreg...... 74 White River below Tygh Valley, Oreg...... 75 Deschutes River at Moody, near Biggs, Oreg...... 76 Columbia River at The Dalles, Oreg...... 77 Klickitat River basin Klickitat River above West Fork, near Glenwood, Wash...... 78 Klickitat River near Glenwood, Wash...... 79 Little Klickitat River near Goldendale, Wash...... 80 Little Klickitat River near Wahkiacus, Wash...... 81 Klickitat River near Pitt, Wash...... 82 Hood River basin Hood River: West Fork Hood River near Dee, Oreg...... 83 Hood River near Hood River, Oreg...... 84 White Salmon River basin White Salmon River below Cascades Creek, near Trout Lake, Wash...... 85 White Salmon River near Trout Lake, Wash...... 86 White Salmon River at Husum, Wash...... 87 White Salmon River near Underwood, Wash...... 88 Little White Salmon River basin Little White Salmon River at Willard, Wash...... 89 Little White Salmon River above Lapham Creek, near Willard, Wash...... 90 Little White Salmon River near Cook, Wash...... 91 Wind River basin Wind River above Trout Creek, near Carson, Wash...... 92 Wind River near Carson, Wash...... 93 Sandy River basin Sandy River: Salmon River near Government Camp, Oreg...... 94 Sandy River near Marmot, Oreg...... 95 Bull Run River: Lake Ben Morrow near Bull Run, Oreg...... 96 Bull Run River near Bull Run, Oreg...... 97 Little Sandy River near Bull Run, Oreg...... 98 Sandy River below Bull Run River, near Bull Run, Oreg...... 99 Washougal River basin Washougal River near Washougal, Wash'...... 100 Willamette River basin Middle Fork Willamette River above Salt Creek, near Oakridge, Oreg...... 101 Salmon Creek near Oakridge, Oreg...... 102 North Fork of Middle Pork Willamette River near Oakridge, Oreg...... 103 Middle Fork Willamette River below North Fork, near Oakridge, Oreg...... 104 Lookout Point Reservoir near Lowell, Oreg...... 105 Middle Fork Willamette River near Dexter, Oreg...... 106 Fall Creek below Winberry Creek, near Fall Creek, Oreg...... 107 Middle Fork Willamette River at Jasper, Oreg...... 108 Coast Fork Willamette River at London, Oreg...... 109 Cottage Grove Reservoir near Cottage Grove, Oreg...... 110 Coast Fork Willamette River below Cottage Grove Dam, Oreg...... Ill Row River above Pitcher Creek, near Dorena, Oreg...... 112 Dorena Reservoir near Cottage Grove, Oreg...... 113 Row River near Cottage Grove, Oreg...... 114 Mosby Creek at mouth, near Cottage Grove, Oreg...... 115 Coast Fork Willamette River near Goshen, Oreg...... 116 McKenzie River at outlet of Clear Lake, Oreg...... 117 McKenzie River near Belknap Springs, Oreg...... 118 Smith River near Belknap Springs, Oreg...... 119 McKenzie River at McKenzie Bridge, Oreg...... 120 South Fork McKenzie River above Cougar Reservoir, near Rainbow, Oreg...... 121 South Fork McKenzie River near Rainbow, Oreg...... 122 Blue River near Blue River, Oreg...... 123 McKenzie River near Vida, Oreg...... 124 McKenzie River near Coburg, Oreg...... 125 Willamette River at Harrisburg, Oreg...... 126 Long Tom River near Not!, Oreg...... 127 Coyote Creek near Crow, Oreg...... 128 Fern Ridge Reservoir near Elmira, Oreg...... 129 Long Tom River below Fern Ridge Dam, near Smithfield, Oreg...... 130 Amazon Creek near Eugene, Oreg...... 131 Long Tom River at Monroe, Oreg...... 132 Marys River near Philomath, Oreg...... 133 Calapooya River at Holley, Oreg...... 134 Calapooya River at Albany, Oreg...... 135 Willamette River at Albany, Oreg...... 136 North Santiam River (head of Santiam River) below Boulder Creek, near Detroit, Oreg...... 137 Breitenbush River above Canyon Creek, near Detroit, Oreg...... 138 Detroit Reservoir near Detroit, Oreg...... 139 North Santiam River at Niagara, Oreg...... 140 Little North Santiam River near Mehama, Oreg...... 141 North Santiam River at Mehama, Oreg...... 142 South Santiam River below Cascadia, Oreg...... 143 Middle Santiam River at mouth, near Foster, Oreg...... 144 Wiley Creek near Foster, Oreg...... 145 CONTENTS VII

Gaging-station records Continued Columbia River basin Continued Wlllamette River basin Continued North Santlam River Continued Page South Santlam River at Waterloo, Oreg...... 146 Santlam River at Jefferson, Oreg...... 147 Lucklamute River near Hosklns, Oreg...... 148 Lucklamute River at Pedee, Oreg...... 149 Lucklamute River near Suver, Oreg...... 150 Rickreall Creek near Dallas, Oreg...... 151 Wlllamette River at Salem, Oreg...... 152 Mill Creek at Salem, Oreg...... 153 South Yamhill River (head of Yamhill River) near Wlllamlna, Oreg...... 154 Willamlna Creek near Wlllamina, Oreg...... 155 Mill Creek near Wlllamina, Oreg...... 156 South Yamhill River near Whiteson, Oreg...... 157 North Yamhill River: Haskins Creek below reservoir, near McMlnnville, Oreg...... 158 North Yamhill River at Pike, Oreg...... 159 Wlllamette River at Wllsonville, Oreg...... 160 Molalla River above Pine Creek, near Wllhoit, Oreg...... 161 Molalla River near Canby, Oreg...... 162 Pudding River near Mount Angel, Oreg...... 163 Pudding River at Aurora, Oreg...... 164 Tualatln River; Scoggin Creek near Oaston, Oreg...... 165 Tualatln River near Dllley, Oreg...... 166 Tualatin River at Farmlngtori, Oreg...... 167 Tualatln River near Wlllamette, Oreg...... 168 Clackamas River at Big Bottom, Oreg...... 169 Reservoirs In Willamette River basin, Oreg...... 170 Oak Grove Fork near Government Camp, Oreg...... 171 Oak Grove Fork above powerplant Intake, Oreg...... 172 Clackamas River above Three Lynx Creek, Oreg...... 173 Clackamas River at Estacada, Oreg...... 174 Johnson Creek at Sycamore, Oreg...... 175 Lake River basin Lake River; Salmon Creek near Battle Ground, Wash...... 176 Lewis River basin Lewis River; Big Creek below Skookum Meadow, near Trout Lake, Wash...... 177 Rush Creek above Meadow Creek, near Trout Lake, Wash...... 178 Meadow Creek below Lone Butte Meadow, near Trout Lake, Wash...... 179 Rush Creek above falls, near Cougar, Wash...... 180 Curly Creek near Cougar, Wash...... 181 Lewis River above Muddy River, near Cougar, Wash...... 182 Muddy River below Clear Creek, near Cougar, Wash...... 183 Pine Creek near Cougar, Wash...... 184 Lewis River near Cougar, Wash...... 185 Reservoirs in Lewis River basin, Wash...... 186 Lewis River at Ariel, Wash...... 187 East Fork Lewis River near Heisson, Wash...... 188 Kalama River basin Kalama River below Italian Creek, near Kalama, Wash...... 189 Cowlitz River basin Cowlitz River at Packwood, Wash...... 190 Cispus River near Handle, Wash...... 191 Cowlitz River near Kosmos, Wash...... 192 Cowlitz River at Mossyrock,'Wash...... 193 Tllton River: West Fork Tilton River near Morton, Wash...... 194 Tilton River above Bear Canyon Creek, near Clnebar, Wash...... 195 Cinnabar Creek near Cinebar, Wash...... 196 Tllton River near Clnebar, Wash...... 197 Klickltat Creek at Mossyrock, Wash...... 198 Winston Creek near Mayfield, Wash...... 199 Cowlitz River near Mayfleld, Wash...... 200 Mill Creek near Salkum, Wash...... 201 Toutle River: Silver Lake at Sliver Lake, Wash...... 202 Toutle River near Silver Lake, Wash...... 203 Cowlitz River at Castle Rock, Wash...... 204 Arkansas Creek near Castle Rock, Wash...... 205 Coweman River near Kelso, Wash...... 206 Elokomln River basin Elokomin River near Cathlamet, Wash...... 207 Grays River basin Grays River above South Fork, near Grays River, Wash...... 208 Grays River below South Fork, near Grays River, Wash...... 209 West Branch Grays River near Grays River, Wash...... 210 Youngs River basin Youngs River near Astorla, Oreg...... 211 Pacific Slope basins In Oregon Nehalem River basin Nehalem River near Foss, Oreg...... 212 Wilson River basin Wilson River near Tillamook, Oreg...... 213 Siletz River basin Slletz River at Slletz, Oreg...... 214 VIII CONTENTS

Gaging-station records Continued Pacific slope basins Continued Alsea River basin Page North Fork Alsea River (head of Alsea River) at Alsea, Oreg...... 215 South Fork Alsea River near Alsea, Oreg...... 216 Fall Creek near Alsea, Oreg...... 217 Five Rivers near Fisher, Oreg...... 217 Alsea River near Tidewater, Oreg...... 218 Umpqua River basin South Umpqua River (head of Umpqua River): Jackson Creek near Tiller, Oreg...... 219 South Umpqua River at Tiller, Oreg...... 220 Elk Creek near Drew, Oreg...... 221 Days Creek at Days Creek, Oreg...... 222 Cow Creek near Azalea, Oreg...... 223 West Fork Cow Creek near Glendale, Oreg...... 224 Cow Creek near Riddle, Oreg...... 225 South Myrtle Creek near Myrtle Creek, Oreg...... 226 North Myrtle Creek near Myrtle Creek, Oreg...... 227 Lookingglass Creek: Olalla Creek near Tenmile, Oreg...... 228 Lookingglass Creek at Brockway, Oreg...... 229 South Umpqua River near Brockway, Oreg...... 230 Deer Creek near Roseburg, Oreg...... 231 North Umpqua River: Lemolo Reservoir near Toketee Falls, Oreg...... 232 North Umpqua River below Lemolo Reservoir, near Toketee Falls, Oreg...... 233 Clearwater River above Trap Creek, near Toketee Falls, Oreg...... 234 Fish Creek at Big Camas ranger station, near Toketee Falls, Oreg...... 235 North Umpqua River above Copeland Creek, near Toketee Falls, Oreg...... 236 Steamboat Creek near Glide, Oreg...... 237 Rock Creek near Glide, Oreg...... 238 Little River at Peel, Oreg...... 239 Sutherlin Creek at Sutherlin, Oreg...... ' 240 North Umpqua River at Winchester, Oreg...... 241 Umpqua River: Calapooya Creek near Oakland, Oreg...... 242 Umpqua River near Elkton, Oreg...... 243 Elk Creek near Drain, Oreg...... 244 Tenmile Creek basin Tenmile Creek near Lakeside, Oreg...... 245 Coos River basin South Fork Coos River: Millicoma River: West Fork Millicoma River near Allegany, Oreg...... 246 Coquille River basin South Fork Coquille River above Panther Creek, near Illahe, Oreg...... 247 South Fork Coquille River near Illahe, Oreg...... 248 Rock Creek near Illahe, Oreg...... 249 South Fork Coquille River near Powers, Oreg...... 250 South Fork Coquille River at Powers, Oreg...... 251 Rogue River basin Rogue River above Prospect, Oreg...... 252 South_Fork Rogue River near Prospect, Oreg...... 253 Middle Fork Rogue River: Red Blanket Creek near Prospect, Oreg...... 254 Rogue River below South Fork Rogue River, near Prospect, Oreg...... 255 South Fork Big Butte Creek near Butte Falls, Oreg...... 256 Elk Creek near Trail, Oreg...... 257 Rogue River at Dodge Bridge, near Eagle Point, Oreg...... 258 South Fork Little Butte Creek near Lake Creek, Oreg...... 259 North Fork Little Butte Creek at Fish Lake, near Lake Creek, Oreg...... 260 North Fork Little Butte Creek near Lake Creek, Oreg...... 261 Emigrant Creek (head of Bear Creek) near Ashland, Oreg...... 262 Bear Creek at Medford, Oreg...... '...... 263 Rogue River at Raygold, near Central Point, Oreg...... 264 Rogue River at Grants Pass, Oreg...... 265 Applegate River near Copper, Oreg...... 266 Applegate River near Applegate, Oreg...... 267 Williams Creek: Powell Creek near Williams, Oreg...... 268 Grave Creek at Pease Bridge, near Placer, Oreg...... 269 East Fork Illinois River near Takilma, Oreg...... 270 Sucker Creek near Holland, Oreg...... 271 West Fork Illinois River below Rock Creek, near O'Brien, Oreg...... 272 Illinois River at Kerby, Oreg...... 273 Illinois River near Selma, Oreg...... 274 Reservoirs in Rogue River basin, Oreg...... 275 Discharge at partial-record stations and miscellaneous sites...... 276 Crest-stage partial-record stations...... 276 Measurements at miscellaneous sites...... 284 Index...... 287

ILLUSTRATIONS

Figure 1. Map of the United States showing areas covered by the 18 annual volumes on surface water supply...... 9 2. Comparison of discharge at two key gaging-stations during 1958 water year with median discharge for 25-year period...... 12 SURFACE WATER SUPPLY OP PACIFIC SLOPE BASINS IN OREGON AND LOWER COLUMBIA RIVER BASIN, 1958

SCOPE OF WORK

This volume is one of a series of 18 reports presenting measurements of stage, discharge, and content of streams, lakes, and reservoirs in the United States during the water year ending September 30, 1958. Since 1888, when the United States Geological Survey first studied streamflow in relation to problems of irrigation, similar measurements have been made at more than 14,000 gaging stations in the 48 States and at many others in the Terri tories of Alaska and Hawaii. On September 30, 1958, the Geological Survey and cooperating organizations were maintaining 7,090 gaging stations, including those in Alaska and Hawaii. Partial-record stations for low flow or for flood flow have been operated at many other points. In addition, discharge measurements are made at miscellaneous sites. The records for the water year October 1, 1957, to September 30, 1958, at gaging stations, partial- record stations, and miscellaneous sites in the Pacific slope basins in Oregon and lower Columbia River basin are given in this report.

COOPERATION

Many State, municipal, and private organizations have cooperated with the Geological Survey in this work by either furnishing or helping to collect data. Organizations that supplied data are acknowledged in station descriptions, and organizations that assisted in the collection of data through cooperative agreements with the Survey are: Oregon: State of Oregon, L. A. Stanley, State engineer, and C. H. Reynolds, chairman, Oregon State Highway Commission; Fish Commission of Oregon, M. C. James, State Fisheries director; County Court of Douglas County, and the cities of Coos Bay- North Bend, Dallas, Eugene, McMinnville, and Portland. Washington: State Department of Conservation, Earl Coe, director, and M. G. Walker, supervisor of the Division of Water Resources; State Department of Fisheries, M. E. Moore, director; State Department of Game, J. A. Biggs, director; cities of Goldendale and Tacoma; Klickitat, Skamania, and Wahkiakum County Public Utility Dis tricts; and Klickitat County. Assistance in the form of funds or services was given by the Corps of Engineers, Department of the Army, in collecting records published herein for 42 gaging stations in Oregon and 8 in Washington. Assistance was also furnished by the Bureau of Reclamation and Bonneville Power Admin istration, United States Department of the Interior. The following organizations aided in collecting records: Oregon: Counties of Crook, Deschutes, Jackson, Jefferson, Josephine, Klamath, and Umatilla; city of Grants Pass; The California Oregon Power Co., Pacific Power & Light Co., Portland General Electric Co., and Coos-Curry Public Utility District. Washington: Pacific Power & Light Co. 2 SURFACE WATER S'JPPLY, 1958, PART 14

DIVISION OP WORK

The stream-gaging work was done by the Water Resources Division of the Geological Sur vey, under the direction of personnel shown in the preface. The data for stations in the several States were collected and prepared for publication in the district offices listed below. State District office Address Oregon a/...... Portland...... 1001 NE. Lloyd Boulevard. Washington...... Tacoma...... 207 Federal Building. a/ The work was done in collaboration with L. A. Stanley, State engineer, and C. H. Reynolds, chairman, State Highway Commission. Information of a more detailed nature than that published for most of the gaging sta tions given in this report is on file in the district offices listed above. Provisional records of discharge prior to publication, and other unpublished data concerning the gaging-station records may generally be obtained from the district office.

DEFINITION OF TERMS AND ABBREVIATIONS

The terms of streamflow and other hydrologic data, as used in this report, are defined as follows: flaging station is a particular site on a stream, canal, lake, or reservoir where sys tematic observations of gage height or discharge are obtained. When used in connection with a discharge record, the term is applied herein only to those gaging stations where a continuous record of discharge is obtained. Partial-record station is a particular site where limited stream-flow data are collec ted systematically over a period of years for use in hydrologic analyses. Cubic foot per second (cfs) is the rate of discharge of a stream whose channel is 1 square foot in cross-sectional area and whose average velocity is 1 foot per second. Cubic feet per second per square mile (cfsm) is the average number of cubic feet of water flowing per second from each square mile of area drained, assuming that the runoff is distributed uniformly in time and area. Runoff in inches (in.) shows the depth to which the drainage area would be covered if all the runoff for a given time period were uniformly distributed on it. Acre-foot (ac-ft) is the quantity of water required to cover an acre to the depth of 1 foot and is equivalent to 43,560 cubic feet. Cfs-day is the volume of water represented by a flow of 1 cubic foot per second for 24 hours. It is equivalent to 86,400 cubic feet, 1.983471 acre-feet, or 646,317 gallons, and represents a runoff of 0.0372 inch from 1 square mile. Stage-discharge relation is the relation between gage height and the amount of water flowing in a channel, expressed as volume per unit of time. Control designates a feature downstream from the gage that determines the stage- discharge relation at the gage. This feature may be a natural constriction of the chan nel, a long reach of the channel, or an artificial structure. Contents is the volume of water in a reservoir. Unless otherwise indicated, volume is computed on the basis of a level pool and does not include bank storage. The drainage area of a stream at a specified location is that area, measured in a hori zontal plane, which is so enclosed by a topographic divide that direct surface runoff from precipitation normally would drain by gravity into the river above the specified point. EXPLANATION OP DATA 3

Figures of drainage area given herein include all closed basins, or noncontributing areas, within the area unless otherwise noted. WSP is used as an abbreviation for "Water-Supply Paper" in references to previously published reports.

DOWNSTREAM ORDER AND STATION NUMBERS

Beginning with the series of reports for the water year ending September 30, 1951, the order of listing gaging-station records was changed. In this report, in a downstream direction along the main stem all stations on a tributary entering above a main-stem sta tion are listed before that station. If a tributary enters between two main-stem stations, it is listed between them. A similar order is followed in listing stations on first rank, second rank, and other ranks of tributaries. To indicate the rank of any tributary on which a gaging station is situated and the stream to which it is immediately tributary, each indention in the listing of gaging stations in the table of contents of this report represents one rank. This downstream order and system of Indention show which gaging sta tions are on tributaries between any two stations on a main stem and the rank of the trib utary on which each gaging station is situated. The order of listing used before the publication of the 1951 report listed first all stations on the main stem from headwaters toward mouth, then all stations on the uppermost tributary to the main stem from the tributary's source to mouth, and then all stations from source to mouth of the uppermost tributary to the tributary. As an added means of identification, each gaging station and partial-record station has been assigned a station number. The numbers have been assigned in the same downstream order used in this report. In assigning station numbers, no distinction is made between partial-record stations and regular gaging stations, so that the station number for a partial-record station indicates downstream-order position in a list made up of both types of stations. Gaps are left in the numbers to allow for new stations that may be estab lished; hence the numbers are not consecutive. The complete number for each station has eight digits, but the station number as shown in this report, Just to the left of the sta tion name, consists of only the essential digits of the complete number. For example, for a station with the complete number 14-0110.00, the station number shown in this report is 110. The notation in the two places to the left of the hyphen is the part number; it is (14) for all stations in this report and is therefore omitted.

EXPLANATION OP DATA

The base data collected at gaging stations consist of records of stage and measurements of discharge. In addition, observations of factors affecting the stage-discharge relation, weather records, and other information are used to supplement base data in determining the daily flow. The records of stage are obtained either from direct readings on a nonrecording gage or from a water-stage recorder that gives a continuous record of fluctuations. Measurements of discharge are made with a current meter by the general methods adopted by the Geological Survey on the basis of experience in stream gaging since 1888. These methods are described in Water-Supply Paper 888 and are also outlined in standard text books on the measurement of stream discharge. 4 SURFACE WATER SUPPLY, 1958, PART 14

Rating tables giving the discharge for any stage are prepared from stage-discharge relation curves defined by discharge measurements. If extensions to the rating curves are necessary to define the extremes of discharge, they are made on the basis of Indirect measurements of peak discharge (such as slope-area or contracted-opening measurements, computation of flow over dams or weirs, and by other methods), velocity-area studies, and logarithmic plotting. The application of the dally mean gage height to those rating tables gives the dally mean discharge, from which the monthly and the yearly mean dis charge are computed. If the stage-discharge relation is subject to change because of fre quent or continual change In the physical features that form the control, the dally mean discharge is determined by the shifting-control method, In which correction factors based on Individual discharge measurements and notes by engineers and observers are used In applying the gage heights to the rating tables. If the stage-discharge relation for a station Is temporarily changed by the presence of aquatic growth or debris on the control, the dally mean discharge is computed by what is essentially the shifting-control method. At some gaging stations the stage-discharge relation Is affected by backwater from reservoirs, tributary streams, or other sources. This necessitates the use of the slope method in which the slope or fall in a reach of the stream Is a factor In determining dis charge. Information requisite for determining the slope or fall Is obtained by means of an auxiliary gage set at some distance from the base gage. At some stations the stage- discharge relation Is affected by changing stage. If so, the rate of change of stage Is uaed as a factor In the determination of discharge. At most gaging stations In the northern part of the United States and at some in the mountainous regions of other parts the stage-discharge relation Is affected by ice during the winter, and It becomes impossible to compute the discharge In the usual manner. Dis charge for periods of ice effect is computed on the basis of the gage-height record and occasional winter discharge measurements, consideration being given to the available Information on temperature and precipitation, notes by gage observers and engineers, and comparable records of discharge for other stations In the same or nearby basins. If the stage-discharge relation is affected by Ice, this Information Is given in a note to the table. No mention is made of occasional days of Ice effect If the degree of accuracy of dally records is not changed. The data herein presented generally comprise a description of the station, a skeleton rating table, and a table showing the daily discharge and monthly and yearly discharge of the stream. Records are published for the water year which begins on October 1 and ends on September 30. A calendar for the water year 1958 is shown on page IV for the purpose of finding the day of the week for any date. The description of the station gives the location, drainage area, records available, type and history of gages, average discharge, extremes of discharge, general remarks, and notations of revisions of the previously published record. The location of the gaging station and the drainage area are obtained from the most accurate maps available. River mileage, given under "Location" for some stations, is that determined and used by the Corps of Engineers unless otherwise noted. Under "Records available" are given the peri ods for which there are published records generally equivalent to those at present site. Under "Gage" are given the type of gage currently In use and the datum of the present gage above mean sea level, and a condensed history of the types, locations, and datums EXPLANATION OF DATA 5 of previous gages used during the period of records available. Under "Average discharge" is given the average discharge for the number of years indicated. It is not given for stations having fewer than five complete years of record or for stations where changes in water development during the period of record cause the figure to have little significance. Under "Extremes" are given the maximum discharge and gage height; the minimum discharge if there is little or no regulation; the minimum daily discharge if there is extensive regu lation (also the minimum discharge if useful); and the minimum gage height (unless it is of no importance). In the first paragraph, the data given are for the complete current water year unless otherwise specified. In the second paragraph, the data given are for the periods of record within the calendar year dates in the heading (not necessarily those for the complete years indicated by the heading dates). Reliable information concerning major floods that have occurred outside the period of record are given in the third or last paragraph under "Extremes." Unless otherwise qualified, the maximum discharge cor responds to the crest stage obtained by use of a water-stage recorder, a crest-stage indicator, or a nonrecording gage read at the time of the crest. If the maximum gage height did not occur at the same time as the maximum discharge, it is given separately. Information pertaining to the accuracy of the records and conditions which affect the natural flow at the gaging station is given under "Remarks." Previously published records of some stations have been found to be in error on the basis of data or information later obtained. Revisions of such records are usually pub lished along with the current records in one of the annual reports. In order to make it easier to find such revised records, a paragraph headed "Revisions (water years)" has been added to the description of all stations for which revised records have been published. Listed therein are all the reports in which revisions have been published, each followed by the water years for which figures are revised in that report. In listing the water years only one number is given; for instance, 1933 stands for the water year October 1, 1932 to September 30, 1933. If no daily, monthly, or annual figures of discharge are con cerned in the revision, that fact is brought out by notations after the year dates as follows: "(M)" means that only the instantaneous maximum discharge was revised; "(m)" that only the instantaneous minimum was revised; and "(P)" that only peak discharges were revised. If the drainage area has been revised, the report in which the revised figure was first published is given. It should be noted that for all stations for which cubic feet per second per square mile and runoff in inches are published, a revision of the drainage area necessitates corresponding revision of all figures based on the drainage area. Revised figures of cubic feet per second per square mile and runoff in inches resulting from a revision of the drainage area only are usually not published in the annual series of reports. Skeleton rating tables are published for all stations except those at which the daily discharge for the greater part of the open-water period was determined by the shifting- control method, the slope method, or other special methods involving an equivalent adjust ment to the gage height of more than one-tenth foot. Skeleton rating tables are generally not published for stations on canals. For stations equipped with water-stage recorders, except those on streams subject to sudden or rapid fluctuation, the daily table gives the discharge corresponding to the 6 SURFACE WATER SUPPLY, 1958, PART 14 dally mean gage height. For stations subject to such fluctuation the daily mean gage height may not indicate the true daily mean discharge, which must be obtained by averag ing the discharge for parts of the day or by using the discharge integrator, an instrument for obtaining the daily mean discharge from a continuous gage-height graph and containing, as an essential element, a curve representing the stage-discharge relation at the station. For stations equipped with nonrecording gages, the table of daily discharge gives the dis charge corresponding to once-daily readings of the gage, or to the mean of twice-daily readings, or to the mean gage height determined from gage-height graphs based on gage readings. For periods of rapidly changing stage, the daily mean discharge is determined from gage-height graphs based on gage readings, the frequency of which is stated in the station description. In the table of daily discharge, the figures for the maximum day and the minimum day for each month are underlined. If the figure is repeated, it is underlined only on the first day of its occurrence. In the monthly summary below the daily table, the line headed "Total" gives the sum of the daily figures; it is the total cfs-days for the month. The line headed "Mean" gives the average flow in cubic feet per second during the month. Discharge for the month may be expressed in cubic feet per second per square mile (line headed "Cfsm"), or in inches (line headed "in."), or in acre-feet (line headed "Ac-ft"). Figures for cubic feet per second per square mile and runoff in inches are omitted if the drainage area includes large noncontributing areas, or if the average annual rainfall over the drainage basin is usually less than 20 inches. In the yearly summary below the monthly summary, the figures of maximum are the maxi mum daily discharges, not the momentary discharges when the water was at crest stage. Likewise, the minimums in this summary are the minimum daily discharges. Peak discharges and the times of their occurrence and corresponding gage heights of most stations are listed below the table of daily and monthly discharge. All independent peaks above the selected base are given. The base discharge, which is given in paren theses, is selected so that an average of about three peaks a year will be presented. Peak discharges are not published for canals, ditches, drains, or for any stream for which the peaks are subject to substantial control by man. Footnotes to the table of daily discharge indicate periods when discharge was computed or estimated by unusual or special methods during periods of no gage-height record and ice effect, or by other effects that reduce the degree of accuracy of the records. Days on which discharge measurements were made are indicated by asterisk and footnote unless they were made at frequent regular intervals, in which instance the general frequency of discharge measurements is given under "Remarks" in the station description. For most gaging stations on lakes and reservoirs the data presented comprise a descrip tion of the station and a monthly summary table of stage and contents. For some reser voirs a table showing daily contents or stage is given. A skeleton table of capacity at given stages is published each year for all reservoirs for which records are published on a daily basis, but is not published for reservoirs for which only monthly data are given. At many gaging stations water samples are collected from the streams for the purpose of making chemical analyses, computing dissolved solids, suspended sediment loads, and ACCURACY OP FIELD DATA AND COMPUTED RESULTS 7 particle-size distribution, or measuring water temperatures. For most of these samples the results are published in an annual series of water-supply papers entitled "Quality of Sur face Waters of the United States" which is issued in four volumes. In this report under "Remarks" a reference is made to quality-of-water records collected at gaging stations on a regular basis and published in the quality-of-water reports. At many other gaging sta tions quality-of-water data are obtained at irregular intervals and published as "miscel laneous analyses" in quality-of-water reports; such records are not referred to in "Remarks" paragraph in this report. At many gaging stations water temperature is obtained also at the time a discharge measurement is made; such temperature readings are not reported in the quality-of-water annual reports. Data collected at partial-record stations and at miscellaneous sites are given at the end of each report. Partial-record stations are presented in two tables. The first is a table of discharge measurements at low-flow partial-record stations, and the second is a table of annual maximum stage and discharge at crest-stage stations. Discharge measure ments at miscellaneous sites are given in a third table. Occasionally, a series of dis charge measurements are made within a short time period to investigate the seepage gains or losses along a reach of a stream or to determine the low-flow characteristics of an area. Such measurements are given in special tables after the list of measurements at miscellaneous sites.

ACCURACY OF FIELD DATA AHD COMPUTED RESULTS

The accuracy of streamflow data depends primarily on (1) the stability of the stage- discharge relation or, if the control is unstable, the frequency of discharge measurements, and (2) the accuracy of observations of stage, measurements of discharge, and interpre tation of records. The station description states the degree of accuracy of the records. "Excellent" indicates that, in general, the error in the daily records is believed to be less than 5 percent; "good," less than 10 percent; "fair," less than 15 percent; and "poor," prob ably more than 15 percent. The records of monthly and yearly mean discharge and runoff are, in general, more nearly accurate than the daily records. Discharge at some stations, as indicated by the monthly mean, may vary widely from natural runoff, owing to diversion, consumption, regulation by storage, increase or decrease in evaporation due to artificial causes, or to other factors. For such stations, figures of cubic feet per second per square mile and of runoff in inches are not pub lished unless satisfactory adjustments can be made for diversions, for changes in contents of reservoirs, or for other changes incident to use and control. Evaporation from a res ervoir is not included in the adjustments for changes in reservoir contents, unless it is so stated. Even at those stations where adjustments are made, large errors in computed runoff may occur when relatively large negative adjustments are made or when evaporation is large in comparison with the observed discharge. Many gaging stations on streams in the irrigated areas of the United States are situ ated above most of the diversions from those streams, and therefore the discharge recorded does not actually show the water supply available at the stations for further development, because water must first be supplied to existing irrigation systems. SURFACE WATER SUPPLY, 1958, PART 14

PUBLICATIONS

To facilitate publication of the annual series of reports, the area of the United States is divided into 14 parts whose boundaries coincide with certain natural drainage lines. Formerly, the results of streamflow measurements were published in 14 volumes, one for each of the 14 parts. Beginning with the reports for 1951, the records are published in 18 volumes, there being 2 volumes each for Parts 1, 2, 3, and 6. The boundaries of the various parts are indicated by the following list and the map in figure 1. Part 1. North Atlantic slope basins, in two volumes: A, North Atlantic slope basins, Maine to Connecticut. B, North Atlantic slope basins, New York to York River. 2. South Atlantic slope and eastern Gulf of Mexico basins, in two volumes: A, South Atlantic slope basins, James River to Savannah River. B, South Atlantic slope and eastern Gulf of Mexico basins, Ogeechee River to Pearl River. 3. Ohio River basin, in two volumes: A, Ohio River basin except Cumberland and Tennessee River basins. B, Cumberland and Tennessee River basins. 4. St. Lawrence River basin. 5. Hudson Bay and upper Mississippi River basins. 6. Missouri River basin, in two volumes: A, Missouri River basin above Sioux City, Iowa. B, Missouri River basin below Sioux City, Iowa. 7. Lower Mississippi River basin. 8. Western Gulf of Mexico basins. 9. Colorado River basin. 10. The Great Basin. 11. Pacific slope basins in California. 12. Pacific slope basins in Washington and upper Columbia River basin. 13. Snake River basin. 14. Pacific slope basins in Oregon and lower Columbia River basin. Water-supply papers and other publications of the Geological Survey containing data on the water resources of the United States may be purchased or consulted as follows: 1. Copies may be purchased from the Superintendent of Documents, Government Printing Office, Washington 25, D. C., who will, on application, furnish lists giving prices. A list of Geological Survey publications may also be obtained by applying to the Director, Geological Survey, Washington, D. C. 2. Sets of the reports may be consulted in the libraries of the principal cities in the United States. 3. Sets are available for consultation in the offices of the Water Resources Division of the Geological Survey. Addresses of the offices in the area covered by this report are given on page 2. Early records of the flow of streams in the United States are published in the reports listed below. In many of these reports records for years earlier than those indicated have been included for some streams.

Streamflow data for the years 1884-1901, in reports of the Geological Survey (A = Annual Report; B - Bulletin)

Report Character of data Year 10th A pt. 2 Descriptive information only. llth A pt. Z Monthly discharge and descriptive information ...... 1884 to September 189O. 12th A pt. 2 ....do...... 14th A pt. 2 B 131...... 16th A pt. Z Descriptive information only. B 140...... monthly discharge . WSP 11 ...... 18th A, pt. 4 Descriptions, measurements ratings, and monthly discharge.. 1895-96 WSP 15...... of the Mississippi River and Missouri River and tribu 1897. taries above Kansas River. of the Mississippi River except Missouri River and tribu taries above Kansas River. 19th A, pt. 4 Descriptions, measurements, ratings, and monthly discharge.. 1897. the Mississippi River, and Missouri River and tributaries. Figure 1. Map of the United States showing areas covered by the 18 annual volumes on surface-water supply. The area covered by this report is shaded. 10 SURFACE WATER SUPPLY, 1958, PART 14

Streamflow data for the years 1884-1901, In reports of the Geological Survey Continued (A Annual Report; B = Bulletin) Report Character of data Year

the Mississippi River, except Missouri River and tribu taries . 20th A, pt. 4

22d A, pt. 4. WSP 65, 66... Descriptions, measurements, gage heights, and ratings ...... 1901. WSP 75...... 1901. Note. Records for all stations In Oregon are contained In WSP 370, superseding all reports In this table for these stations. Reports on surface-water supply containing records from 1899 to date for drainage basins in this report are listed below. The data for any particular gaging station will, in general, be found in the reports covering the years during which the station was main tained. Numbers of water-supply papers containing results of stream measurements In Pacific slope basins In Oregon and lower Columbia River basin, 1899-1958 Year WSP Year WSP Year WSP Year WSP Year WSP 1899 36 1912 332-C 1925 614 1937 834 1949 1154 19OO 51 1913 362-C 1926 634 1938 864 1950 1184 1901 66, 75 1914 394 1927 654 1939 664 1951 1216 1902 65 1915 414 1928 674 194O 904 1952 1248 1903 100 1916 444 1929 694 1941 934 1953 1288 19O4 135 1917 464 1930 7O9 1942 964 1954 1348 1905 a!77,178 1918 484 1931 724 1943 984 1955 1398 1906 214 1919-20 514 1932 739 1944 1014 1956 1448 1907-8 252 1921 534 1933 754 1945 1044 1957 1518 19O9 272 1922 554 1934 769 1946 1064 1958 1568 191O 292 1923 574 1935 794 1947 1094 1911 312 1924 594 1936 614 1946 1124 a Rogue, Umpqua, and Slletz Rivers only. Note. Records for all stations In Oregon through September 1910 are contained In WSP 37O, super seding all earlier reports for these stations. A compilation of records for the area covered by this report through September 1950 has been published as Water-Supply Paper 1318. That report contains a summary of monthly and annual discharges for all previously published records as well as some records-not con tained in the annual series of water-supply papers. All records were reexamined and revised where warranted. Estimates of discharge were made to fill short gaps whenever practical. The reports listed in the foregoing tables contain the customary records of discharge collected during the systematic operation of gaging stations. Detailed information on the stage and discharge of many streams during major floods has been included in special reports on these floods published by the Geological Survey. The more recent of these special reports also contain other pertinent hydrologic information and analyses and compilations of data relating to earlier notable floods. The following list gives the numbers and titles of these reports: Report WSP 96: Destructive floods in the United States in 1903. WSP 771: Floods in the United States, magnitude and frequency. WSP 1080: Floods of May-June 1948 in Columbia River basin. WSP 1137-E: Floods of 1950 in Southwestern Oregon and Northwestern California. WSP 1137-1: Summary of floods in the United States during 1950. WSP 1227-D: Summary of floods, in the United States during 1951. WSP 1260-F: Summary of floods in the United States during 1952. Cir. 191: Floods in western Washington, frequency and magnitude in relation to drainage- area characteristics.

RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY

The table on the following page contains a list of gaging stations for the area covered by this report, at which records of discharge were collected during the water year October 1957 to September 1958 by agencies other than the Geological Survey. The RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY 11 records of these stations are not contained In publications of the Geological Survey except as noted. The records on many canals and drainage ditches, not here listed, have been collected by the Oregon State engineer and the Bureau of Reclamation In connection with the water supply for Irrigation projects. Records of discharge collected by agencies other than the Geological Survey Stream Location Period Collected by Big Butte Springs ..... Sec. 20 or 21, T.35 S., R.3 E., 1930-58 Oregon State engineer. 4 miles east of Butte Falls, Oreg. Do. Hoey Ranch, near Crescent, 1928-58t Oreg. Blue River ...... T.15 S., R.5 E. (unsurveyed), 1955-58* U. S. Forest Service. li miles upstream from Quentln Creek, 7 miles north of town of McKenzle Bridge, Oreg. mile upstream from bridge at 1922-58t Pringle Falls and 7 miles northwest of Laplne, Oreg. Fish Lake Dam, tunnel SEjSEi sec. 4, T.37 S., R.4 E., 1929-58 Do. at. 14 miles east of Lake Creek, Oreg. 12 miles northwest of Uklah, 1932-33, Oreg. 1935-44, 1946-47, 1949-52, 1953-58

7 miles southeast of Butte Falls, Oreg. Little Butte Creek. . . . SE£ sec. 19, T.36 S., R.2 E., at 1922-24, Do. Lake Creek, Oreg. 1927-47, 1949-58 Little Butte Creek, SE£NE£ sec. 20, T.36 S., R.2 E., 1932-58t Do. North Fork. above Rogue River Valley Canal intake, near Lake Creek, Oreg. Little Butte Creek, NE£ sec. 21, T.37 S., R.4 E., 1 1932-58t Do. South Fork. mile south of Big Elk ranger station, near Lake Creek, Oreg. Little Walla Walla NE£NW£ sec. 12, T.5 N., R.35 E., 1932-58* Do. River . near George St., In Milton, Oreg. Lookout Creek...... T.15 or 16 S., R.5 E., (unsur 1955-58* U. S. Forest Service. veyed), O.4 mile upstream from mouth and 6 miles north east of town of Blue River, Oreg. Lookout Creek tribu NE£ sec. 31, T.15 S., R.5 E., 1952-58 Do. tary. 60O ft above mouth and 6.8 miles northeast of town of Blue River, Oreg. 0.5 mile above mouth and 6.5 miles northeast of town of Blue River, Oreg. 0.3 mile above mouth and 6 miles northeast of town of Blue River, Oreg. below Ochoco Reservoir, 6 miles east of Prlnevllle, Oreg. Oohooo Reservoir ...... NW£ sec. 5, T.15 S., R.17 E., 1918-58 Do. 6 miles east of Prinevllle, Oreg. 1935-50, Do. 4 miles east of Butte Falls, 1951-58 Oreg. Willow Creek...... Sec. 34, T.35 S., R.3 E., 6 1949-58 Do. miles southeast of Butte Falls, Oreg. * Records for some earlier years contained In water-supply papers published by the Geological Survey. t Records prior to October 195O, published in WSP 1318. Note. Records through 1941 collected by the Oregon State engineer (some In cooperation with the Bureau of Reclamation of the U. S. Department of the Interior) are contained in bulletins published by that officer. The other records listed In this table have not been published. 12 SURFACE WATER SUPPLY, 1958, PART 14

HYDROLOGIC CONDITIONS

Runoff was generally above median in most of the area covered by this report during the water year. John Day River at Service Creek, Oreg. was record high for both February monthly and daily discharge, and the February monthly mean discharge of streams in the Walla Walla River, Willamette River, and Umpqua River basins ranked among the highest of record. Some flooding occurred Apr. 21-22 along McKay Creek and Umatilla River in the vicinity of Pendleton, but damage was relatively light. For the two key gaging stations in the area covered by this report, a comparison of monthly discharge during the 1958 water year with the median discharge for the 25-year period (1921-45) is shown below.

6000 9,102 5000 John Day River at Service Creek, Oreg. Drainage area, 5,090 sq mi. 4000

3000

2000

1000

Oct. Nov. Dec. Jan. Feb. Mar. April May June July Aug. Sept. The year

35,000

30,000 Umpqua River near Elkton, Oreg. Drainage area 3,683 sq mi.

5,000 B Oct. Nov. Mar. April May June July Aug. Sept. The year Explanation

Median of monthly mean discharge for 25-year period 1921-45.

Monthly mean discharge during water year 1958.

Figure 2. Comparison of discharge at two key gaging stations during 1958 water year with median discharge for 25-year period. GAGING STATION RECORDS 13

LOWER COLUMBIA RIVER BASIN

WALLA WALLA RIVER BASIN

100. South Fork Walla Walla River near Milton, Oreg.

Location.--Lat 45°50', long 118°10', in NE^NE^ sec. 15, T. 4 N., R. 37 E., on right bank 1 mile upstream from Pacific Power & Light Co.'s penstock intake, 1 mile downstream from Elbow Creek, and 13 miles southeast of Milton. Drainage area. 63 sq mi, approximately. Records available. February to October 1903, August 1906 to November 1917, May 1931 to September 1958. Monthly discharges only for some years, published in WSP 1318. Febru ary to October 1903 published as "12 miles above Milton" and 1907-10 published as "above Pacific Power & Light Co.'s intake, near Milton." Gage. Water-stage recorder. Altitude of gage is 2,050 ft (from river-profile map), prior to Mar. 23, 1934, water-stage recorder or staff gages at several sites within If miles of present site at various daturas. Average discharge. 37 years (1907-17, 1931-58), 176 cfs (127,400 acre-ft per year). Extremes. Maximum discharge during year, 1,400 cfs Apr. 20 (gage height, 3.58 ft); minimum 101 cfs Sept. 30. 1903, 1906-17, 1931-58: Maximum discharge recorded, 2,430 cfs Dec. 12, 1946 (gage height, 4.20 ft), from rating curve extended above 240 cfs; minimum, 72 cfs Feb. 14, 1932. Maximum stage known, about 6 ft Mar. 31, 1931, present site and datum. Remarks. Records good. No regulation or diversion above station. Revisions (water years). WSP 964: Drainage area. WSP 1398: 1912, 1940, drainage area (former site). Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Jan Jan. 30 to Sept. 30 1.4 2.0 280 1.4 101 2.5 500 1.7 2.5 500 1.7 162 3.0 830 2.0 265 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 128 108 125 155 222 208 184 380 281 132 al!4 Ill 2 152 108 a!26 149 200 T94 200 385 269 132 al!4 111 3 125 105 128 143 184 *184 *222 385 249 132 al!4 111 4 113 105 128 137 179 179 222 375 253 132 al!4 110 5 116 105 131 134 176 176 214 385 245 130 al!4 110 6 116 105 152 131 179 170 197 430 *249 128 al!2 110 7 128 105 219 128 190 162 194 425 237 128 al!2 110 8 119 105 191 128 204 160 194 445 222 126 al!2 110 9 116 105 177 128 211 157 187 460 245 124 al!2 111 10 113 105 161 128 229 152 222 460 214 124 al!2 *111 11 113 119 152 140 229 152 241 465 204 122 alll 111 12 110 119 146 158 218 150 241 425 218 122 111 111 13 110 167 140 180 265 148 257 360 222 120 111 115 14 110 T58 137 174 245 148 314 336 200 120 111 113 15 110 143 134 180 233 148 277 350 190 120 111 115 16 110 134 143 184 261 148 301 390 182 120 111 110 17 110 128 152 256 310 148 360 425 *176 120 111 110 18 110 128 149 260 365 145 430 455 170 120 111 108 19 110 134 161 222 385 143 380 480 168 118 111 110 20 110 128 233 191 375 145 820 *490 160 118 111 106 21 110 *125 304 174 346 157 736 505 155 116 111 106 22 110 125 244 161 346 168 540 480 150 116 111 106 23 110 122 205 158 360 170 465 470 148 116 111 108 24 110 125 202 155 380 184 420 430 168 116 110 108 25 113 131 184 152 405 194 410 430 148 115 no 106 26 125 140 216 152 314 190 405 415 143 115 *in 104 27 113 134 205 155 *253 187 385 390 138 115 in 104 28 110 134 198 177 222 187 375 360 136 115 in 104 29 108 128 184 276 - 182 *360 328 134 115 113 *104 30 108 125 174 328 184 370 310 134 115 113 103 31 105 *158 257 182 305 a!15 111 Total 3,551 3,703 5,359 5,451 7,486 5,202 10,123 12,729 5,808 3,757 3,463 3,267 Mean 115 123 173 176 267 168 337 411 194 121 112 109 Cfsm 1.83 1.95 2.75 2.79 4.24 2.67 5.35 6.52 3.08 1.92 1.78 1.73 In. 2.10 2.19 3.16 3.22 4.42 3.07 5.98 7.51 3.43 2.22 2.04 1.93 Ae-ft 7,040 7,340 10 , 630 10,810 14,850 10,320 20 , 080 25,250 11,520 7,450 6,870 6,480 Calendar year 1957: Max 723 Min 101 Mean 179 Cfsm 2.84 In. 38.58 Ae-ft 129,600 Water year 1957-58: Max 820 Min 103 Mean 192 Cfsm 3.05 In. 41.27 Ac-ft 138,600 Peak discharge (base, 600 cfs).--Apr. 20 (6 p.m.) 1,400 cfs (3.58 ft). ______* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of recorded range in stage, weather records, and records for North Fork Walla Walla River near Milton and Umatilla River above Meacham Creek near Gibbon. 14 WALLA WALLA RIVER BASIN

110. North Pork Walla Walla River near Milton, Oreg.

Location. Lat 45°54', long 118°17', in NW-j sec. 23, T. 5 N., R. 36 E., on right bank li miles upstream from confluence with South Pork and 5 miles southeast of Milton. Drainage area. 42 sq mi, approximately. Records available. January 1930 to September 1958. Monthly discharges only for some years, published in WSP 1318. Gage.--Water-stage recorder. Altitude of gage is 1,470 ft (from river-profile map). Prior to Oct. 23, 1948, at several sites 0.7 mile downstream at various datums. Average discharge. 28 years, 49.1 cfs (35,550 acre-ft per year). Extremes. Maximum discharge during year, 840 cfs Apr. 20 (gage height, 5.90 ft); mini mum, 2.3 cfs Aug. 28, 29. 1930-58: Maximum discharge observed, 1,980 cfs Dec. 12, 1946 (gage height, 6.97 ft, site and datum then in use), from rating curve extended above 200 cfs; minimum, 0.9 cfs Aug. 17, 1955. Remarks. Records fair. No regulation. Diversions above station for irrigation of about 150 acres, of which 20 acres is below station. Revisions (water years). WSP 1398: 1942, 1947, drainage area (present site and former site).

Rating table, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) (Shifting-control method used Dec. 26 to Mar. 1, Apr. 10-28) 1.8 2.4 2.5 3.5 215 1.9 3.8 2.7 4.0 390 2.0 5.8 3.0 5.0 900 2.2 13 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 9.0 7.7 16 42 88 88 68 221 48 7.7 3.8375" 3.4 2 15-15 574 Iff 36 80 77 71 215 44 8.4 3.1 3 8.4 18 31 68 *65 *86 194 40 9.8 3.7 2.8 4 12 8.4 17 26 61 59 97 185 38 S7o 3.4 2.7 5 10 8.4 18 23 60 57 95 182 31 8.4 3.2 2.5 6 10 8. 20 21 63 50 88 218-224 *28 7.7 3.2 2.4 7 14 8. 59 19 70 45 80 29 6.4 3.1 274 8 12 8. 59 19 82 42 74 218 26 5.8 3.2 2.7 9 11 8. 53 18 88 39 68 215 34 5.4 3.4 *3.0 10 9.4 8. 46 18 101 37 97 203 29 5.6 3.5 3.5 11 8.4 11 40 20 109 36 131 206 28 5.0 3.2 3.4 12 7.7 12 36 21 95 35 129 188 39 S.4 3.1 3.4 13 T7T 27 31 53 150 32 135 148 36"49 4.6 3.1 3.7 14 35 28 96 119 30 148 127 4.4 3.1 3.7 15 30 25 212 101 31 142 125 29 S.O 3.1 3.7 16 23 26 145 155 30 142 129 26 4.0 3.0 3.5 17 20 30 197 188 30 158 138 *22 4.6 3.5 3.5 18 18 32 185 *215 29 172 148 20 4.6 3.7 3.2 19 20 32 117 185 28 129 158 19 S.O 3.2 4.8 20 20 60 89 178 30 463 *148 17 5.6 2.8 5.6 21 *19 152 *71 172 38 *640 148 16 4.8 2.7 5.8 22 18 n? 55 165 48 469 133 14 4.0 2.7 5.8 23 16 84 49 194 60 303 125 12 4.6 3.0 6.1 24 16 65 45 200 71 278 109 16 5.6 2.8 6_^ 25 8. 18 65 43 215 88 263 107 14 6.1 2.5 6.8 26 9 . 22 86 42 172 97 263 88 13 4.8 2.5 6.4- 27 9. 21 83 42 133 34 242 78 12 4.2 2.7 6.1 28 8. 20 74 52 103 89 242 70 11 4.4 2.5 5.8 29 8. 17 71 86 _ 78 *227 59 9.0 4.6 575"2.4 *5.8 30 8.0 16 63 121 77 221 S3 8.0 4.4 5.8 31 8.0 101 72 ST 5.5 3i4 Total 284.3 483.8 1,578 2,095 3,610 1,682 5,721 4,613 757.0 174.4 96.2 128.2 Mean 9.17 16.1 50.9 67.6 129 54.3 191 149 25.2 5.63 3.10 4.27 Ac-ft 564 960 3,130 4,160 7,160 3,340 11,350 9,150 1,500 346 191 254 Calendar year 1957: Max 648 Min 1.5 Mean 54.5 Ac-ft 39,460 Water year 1957-58: Max 640 Mln 2.4 Mean 58.1 Ac-ft 42,100 Peak discharge (base. 500 cfs ). Apr. 20 (7 p.m.) 840 cfs (5.90 ft). * Discharge measurement made on this day. WALLA WALLA RIVER BASIN 15

130. Mill Creek near Walla Walla, Wash.

Location. Lat 46°00'30", long 118°07'00", in SE&SE-^ sec. 12, T. 6 N., R. 37 E., on left bank 4 miles downstream from city of Walla Walla diversion dam, 4| miles upstream from Blue Creek, and 11? miles southeast of Walla Walla. Drainage area. 60 sq mi, approximately. Records available. August 1913 to September 1917, April to September 1938, October 1939 to September 1958. Gage. Water-stage recorder. Datum of gage is 2,000 ft above mean sea level, unadjusted. Prior to Oct. 1, 1938, staff gages at about same site at different datums. Average discharge.--23 years (1913-17, 1939-58), 98.0 cfs (70,950 acre-ft per year). Extremes. Maximum discharge during year, 1,380 cfs Apr. 20 (gage height, 17.67 ft); minimum, 30 cfs Sept. 6; minimum gage height, 14.86 ft Oct. 2. 1913-17, 1938, 1939-58: Maximum discharge, 2,610 cfs Dec. 28, 1945 (gage height, 17.85 ft), from rating curve extended above 620 cfs by logarithmic plotting; minimum observed, 16 cfs Oct. 11-15, 1939. Remarks. Records fair. City of Walla Walla diverts about 22 cfs 4 miles above station for municipal use. No regulation. Wvislons (water years). WSP 1288: Drainage area. WSP 1398: 1946-48(M), 1950(M).

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Apr. 21 Apr. 22 to Sept. 30 14.8 32 15.4 160 14.9 31 16.0 300 15.0 46 16.0 385 15.2 53 16.5 510 15.2 76 17.0 910 15.4 82 17.0 790 15.3 104 17.5 1,270 15.6 155 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 38 37 98 228 143 98 226 77 42 34 34 2 53 37 87 207 121 101 223 7T 42 3T 34 3 40 36 56 79 188 110 121 212 71 434? 34 33 4 37 36 60 72 168 98 126 206 69 34 55 5 37 36 56 69 164 96 126 212 65 40 55 35 6 37 37 109 67 164 87 115 226 65 40 55 33 7 41 37 188 63 164 82 104 216 63 40 *53 35 8 39 37 138 63 180 79 98 223 61 *40 34 55 9 37 37 98 62 188 72 90 234 66 38 34 *53 10 37 37 84 5T 297 71 12T 234 60 38 34 35 11 37 47 72 84 313 69 160 244 57 38 34 53 12 37 50 65 143 319 67 164 216 69 *37 33 33 *121 13 37 60 196 523"555 65 172 163 68 37 33 35 14 37 12T 60 196 65 238 136 60 37 33 35 15 36_ 87 57 277 277 65 232 150 56 37 33 35 16 36 67 60 256 341 63 238 171 53 36 53 34 17 36 57 67 309 373 63 288 187 50 36 34 35 18 36 54 69 317 385 63 408 202 49 36 54 34 19 36 58 119 238 361 62 325 220 48 36 55 36 20 37 57 *276 196 321 6T 830 216 48 36 55 JS 21 37 53 426 160 277 74 928 212 47 36 33 35 22 37 50 27T 115 260 90 *B3B" 195 46 36 35 35 23 37 48 204 101 277 101 *434 187 45 36 53 35 24 37 48 164 98 388 132 352 167 50 35 35 35 25 37 52 154 93 *337 160 324 *159 47 35 55 34 26 39 56 218 90 *252 ISO"168 300 145 45 35 55 34 27 37 53 204 *90 207 *290 126 44 35 35 34 28 37 52 188 115 168 *138 272 102 43 35 55 34 29 38 48 184 219 - 121 244 90 4T 34"34 54 34 30 37 46 160 115 234 82 43 34 34 31 37 121 260 101 80 34 54 Total 1,171 1,592 4,097 4,573 7,585 2,964 8,088 5,662 1,682 1,156 1,056 1,021 Mean 37.8 53.1 132 148 271 95.6 270 183 56.1 37.3 33.4 34.0 Ac-ft 2,320 3,160 8,130 9,070 15,040 5,880 16,040 11,230 3,340 2,290 2,050 2,030 Calendar year 1957: Max 655 Min 34 Mean 91.1 Ac-ft 65,960 Water year 1957-58: Max 928 Min 33 Mean 111 Ac-ft 80,580 Peak discharge (base, 700 cfs). Apr. 20 (8:50 p.m.) 1,380 cfs (17.67 ft). * Discharge measurement made on this day. 16 WALLA WALLA RIVER BASIN

135. Blue Creek near Walla Walla, Wash.

Location. Lat 46°03'30", long 118"08'10", In SWijNWir sec. 25, T. 7 N., R. 37 E., on right bank 1 mile upstream from mouth and 10 miles east of Walla Walla. Drainage area. 17.0 sq ml. Records available. October 1939 to September 1958. Gage. Water-stage recorder. Concrete control since July 25, 1948. Datum of gage is 1,700 ft above mean sea level, unadjusted. Prior to Oct. 1, 1950, at datum 1,700 ft lower. Average discharge. 19 years, 15.7 cfs (11,370 acre-ft per year). Extremes . Maximum discharge during year,, 262 cfs Apr.. 21 (gage height,, 42.24. ft, from high-water-water mark on outside gage); minimum, 0.6 cfs Aug. 1; minimum gage height, 40.38. ft Oct.. 1.. 1939-58: Maximum discharge, 725 cfs Dec. 28, 1945 (gage height, 43.35 ft, present datum), from rating curve extended above 400 cfs; minimum observed, 0.1 cfs Oct. 14, 1939, but may have been less during periods of no gage-height record Oct. 1-11, 15, 1939. Remarks . Records fair except those for periods of doubtful or no gage-height record, which are poor. No known diversion or regulation. Revisions (water years ).--WSP 984: 1942. WSP 1348 : 1941, 1942(M), 1945. Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Jan. 14 to Feb. 4, Apr. 24 to Aug. 28, Sept. 21-30) 40.3 0.7 40.8 18.5 40.4 1.9 41.0 36 40.5 4.2 41.4 83 40.6 7.7 42.0 200 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1.3 1.2 5.7 26 46 27 29 40 4.2 i4 ~78~0.8 1.2 2 4.8 17? 8TT 24 44 24 30 37 3.9 T7? 1.3 3 270 1.4 8^9 21 36 22 41 27 3.9 1.9 .8 1.3 4 1.3 1.4 8.9 18.5 31 21 47 22 3.6 1.8 .8 1.2 5 1.8 1.4 9.4 16.5 32 19.5 45 18.5 3.4 1.4 .8 1.2 6 1.6 1.4 16.5 14 31 18 41 17.5 3.4 1.3 .8 1.3 7 1.8 1.4 29 13 31 16.5 35 16 3.1 1.4 *.8 1.2 8 1.4 1.4 24 12.5 32 16 29 15 2.8 *1.6 1.0 1.3 9 1.4 1.4 18.5 12 32 15 25 13.5 3.6 1.4 1.0 *1.0 10 1.3 1.4 15 Tf.S 45 14 3T 12 3.1 1.3 .8 T7o 11 1.3 2.7 12.5 25 48 13.5 36 12.5 2.7 1.2 .8 1.2 12 1.3 3.1 9.8 43 50 13 36 13 4.8 *1 . 2 1.0 1.3 13 1.3 *8.9 9. 57 75-89 12.5 35 12 475 1.2 1.0 1.3 14 1.2 16 9. 60 12 50 12 3.6 1.2 1.0 1.3 15 1.2 IT. 5 9. 73_ 69 12.5 50 9.8 3.1 1.2 1.0 1.3 16 1.2 8.5 9. 64 73 12 55 8.9 2.8 1.2 1.0 1.2 17 1.2 7.3 9. 67 72 12.5 70 8.1 2.7 1.0 1.0 1.2 18 1.2 6.9 11 69 68 12 100 7.3 2.4 1.0 1.0 1.0 19 1.2 7.7 23 52 56 11.5 80 6.5 2.4 1.0 1.0 1.4 20 1.2 7.7 *74 44 49 TfT? 90 5.7 2.2 1.0 1.0 1.4 21 1.2 7.3 76 35 43 16 180 5.7 2.0 1.0 1.0 1.4 22 1.2 6.5 54 30 39 20 170 5.4 2.0 1.0 1.0 1.4 23 1.2 5.7 40 26 38 24 *164 5.4 1.9 1.0 1.0 1.8 24 1.2 5.4 35 23 40 28 135 5.1 J7W 1.0 1.0 T76 25 1.2 5.4 33 21 *43 37 113 *5.0 2.8 1.0 .8 1.4 26 1.6 6.5 49 18.5 30 44 *111 4.5 2.4 1.0 .8 1.4 27 1.3 6.1 44 *17.5 35 #42 83 4.2 2.2 78".8 1.0 1.4 28 1.3 6.1 43 21 30 37 68 4.2 2.2 1.0 1.4 29 1.3 5.1 42 36 - 33 59 3~9~3.9 2.0 .8 1.2 1.3 30 1.2 5.1 39 48 31 50 2.0 .8 T7? 1.3 31 1.2 33 48 29 4.2 .8 1.2 Total 44.9 153.3 809.3 1,048.0 1,316 658.0 2,088 361.8 89.6 37.1 29.4 39.0 Mean 1.45 5.11 26.1 33.8 47.0 21.2 69.6 11.7 2.99 1.20 0.95 1.30 Cfsm 0.085 0.301 1.54 1.99 2.76 1.25 4.09 0.688 0.176 0.071 0.056 0.076 In. 0.10 0.34 1.77 2.29 2.88 1.44 4.57 0.79 0.20 0.08 0.06 0.09 Ac-ft 89 304 1,610 2,080 2,610 1,310 4,140 718 178 74 58 77 Calendar year 1957: Max 168 Mln 0.8 Mean 15.9 Cfsm 0.935 In. 12.70 Ac-ft 11,490 Water year 1957-58: Max 180 Mln 0.8 Mean 18.3 Cfsm 1.08 In. 14.61 Ac-ft 13,250 Peak discharge (base. 200 cfs).--Apr. 21 (time unknown) 262 cfs (42.24 ft).______* Discharge measurement made on this day. Note. No gage-height record Apr. 13-22; discharge estimated on basis of recorded range In stsge weather records, and records for nearby stations. Doubtful gage-height record Apr. 23 to May 25; discharge computed from recorder graph corrected for drawdown. WALLA WALLA RIVER BASIN 17

150. Mill Creek at Walla Walla, Wash.

Location. Lat 46°04'40", long 118°16'10", in NE^NWir sec. 23, T. 7 N. , R. 36 E., on left bank 400 ft downstream from diversion dam and 1.5 miles east of Walla Walla. Drainage area. --96 sq mi, approximately. Records available. --April 1941 to September 1958. Gage. --Water- stage recorder and artificial control. Altitude of gage is 1,160 ft (from topographic map). April 1941 to June 11, 1941, staff gage and June 11, 1941, to Jan. 22, 1957, water-stage recorder, at site 0.8 mile downstream at different datum. Extremes. Maximum discharge during year, 1,220 cfs Apr. 20 (gage height, 4.12 ft); no flow part of each day Feb. 19, 20. 1941-58: Maximum discharge, 2,760 cfs Dec. 28, 1945 (gage height, 4.0 ft, site and datum then in use); no flow on Nov. 2, 1954, Oct. 3-5, 1957, and part of each day Oct. 15, 18-20, Oct. 29 to Nov. 1, Nov. 3, 1954, Feb. 19, 20, 1958. Remarks . Records good except those for periods of no gage-height record, which are fair, and those below 20 cfs, which are poor. Some regulation at diversion dam 400 ft above station where water is diverted into Yellowhawk and Garrison Creeks for stock and irrigation. Water is diverted 1 mile upstream into Mill Creek Reservoir for flood control with release of stored waters after flood into Russell Creek and is also diverted as required to replenish losses from seepage and evaporation from small recre ation pool maintained in the reservoir. City of Walla Walla diverts water for munici pal supply several miles upstream. Other small diversions above station for irrigation. Results of discharge measurements, in cubic feet per second, made at former gaging stations on Yellowhawk and Garrison Creek diversions are given herewith: Yellowhawk Creek Garrison Creek Sept. 19...... 17.6 Sept. 19...... 5.09 Revisions (water years). WSP 1288: Drainage area. WSP 1348: 1943, 1945-46.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.7 0.4 2.0 32 3.0 400 1.8 4.1 2.2 78 3.5 710 1.9 15 2.5 175 4.0 1,110 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1.2 1.0 11 109 243 103 95 231 47 2 T72 1.0 TT 98 219 95 98 *207 45 3 1.2 .7 11 86 175 86 112 183 42 4 1.2 77 11 78 135 78 122 175 42 5 1.2 .7 11 73 132 76 119 128 40 > 3 6 1.2 1.0 19 68 128' 70 112 145 38 7 1.2 1.0 95 58 TS? 66 103 138 38 (*) 8 1.0 1.0 66 4"949 138 63 95 160 36 (*) 9 1.0 1.0 47 145 60 89 199 40 (*) 10 1.0 1.0 38 49 203 58 98 191 36 11 1.2 1.0 30 73 251 56 116 211 34 2.9 12 1.2 1.0 26 116 243 56 119 203 40 (*) 2.4 13 1.0 10 23 195 7.52 54 116 149 42 2.4 14 1.0 26 21 213 533 53 153 116 38 4.1 15 .4 19 21 467 416 52 195 106 34 279 i 4 > 2 16 .7 11 21 400 479 52 203 112 32 2.4 17 .7 11 24 438 521 51 305 116 28 2.0 18 .7 11 44 467 509 51 497 119 28 2.0 19 .7 13.5 89 35s 419 51 406 153 14 1.6 20 1.0 12.5 *286 239 333 53 736 113 1.6 21 1.0 11 640 179 320 60 *964 58 1.6 22 1.0 9.8 385 128 278 70 717 53 1.2 23 1.0 9.6 247 100 282 78 582 51 T72 24 1.0 9.8 187 95 286 89 473 *49 1.2 25 1.0 9.8 168 89 340 106 438 51 > 6 1.2 26 1.0 11 243 86 277 116 406 56 1.2 27 1.0 9.8 219 78 215 ITS *385 66 2.0 28 1.0 9.8 203 86 153 *109 360 63 3.5 29 1.0 9.8 199 *172 - 100 320 53 2.0 30 1.0 9.8 160 296 100 264 47 1.6 31 1.0 122 273 98 49 Total 31.0 225.3 3,678 5,242 8,257 2,326 8,798 3,751 760 124 62 71.0 Mean 1.00 7.51 119 169 295 75.0 293 121 25.3 4.0 2.0 2.37 Ac-ft 61 447 7,300 10,400 16,380 4,610 17,450 7,440 1,510 246 123 141 Calendar year 1957 : Max 796 Min 0.4 Mean 75.2 Ac-ft 54,420 Water year 1957-58 : Max 964 Min 0.4 Mean 91.3 Ac-ft 66,110 * Discharge measurement made on this day. Note.--No gage-height record Oct. 5, 6, 12, 13, 19, 20, 26, 27, Nov. 2, 3, 9-13, 15-17, 23, 24, 28, 30, Dec. 1, Mar. 13-18, June 19 to Sept. 10; discharge estimated on basis of 4 discharge meas urements, recorded range in stage, weather records, and records for nearby stations. Wire-weight- gage readings used Oct. 1 to Nov. 13, Nov. 15 to Dec. 6, and June 19 to Sept. 10, water below recordable stage. 18 WALLA WALLA RIVER BASIN

160. Dry Creek near Walla Walla, Wash.

Location. Lat 46°07'20", long 118°14'10", on south line SWi sec. 31, T. 8 N., R. 37 E., on right bank 1 mile downstream from Spring Creek and 6 miles northeast of Walla Walla. Drainage area. 48.4 sq mi. Records available.--January 1949 to September 1958. Gage. Water-stage recorder. Concrete control since July 25, 1949. Altitude of gage is T,200 ft (from topographic map). Average discharge. 9 years, 23.9 cfs (17,300 acre-ft per year). Extremes.--Maximum discharge during year, 826 cfs Feb. 12 (gage height, 6.09 ft); mini mum, 1.0 cfs Aug. 27 (gage height, 3.07 ft). 1949-58: Maximum discharge, 3,340 cfs Feb. 22, 1949 (gage height, 11.6 ft, from high-water mark in well), from rating curve extended above 310 cfs on basis of slope- area and contracted-opening measurements of peak flows at gage heights 9.0'and 11.6 ft; minimum, 0.2 cfs Aug. 4, 1949. Remarks. Records good except those for periods of doubtful or no gage-height record, which are poor. Several small diversions above station for irrigation. No regulation.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 3.0 3.6 3.1 1.3 3.8 3.2 3.2 4.1 3.3 4.5 134 3.4 10 5.0 340 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 3.7 3.7 772~7.2 27 60 36 54 87 13 5.7 1.5 1.8 2 ~57312T5 377 24 55 34 54 79 12.5 1.6 1.8 3 3. 7.6 21 49 31 117 68 12 s!o 1.6 2.1 4 4.9 3. 8.0 18.5 45 28 71 59 11 4.6 1.8 2.1 5 5.2 3. 8.0 16.5 60 27 64 55 10.5 4.4 2.0 2.0 6 5.2 3. 12 14.5 36 26 57 54 10 4.2 1.6 2.0 7 5.8 3. 35 13 36 24 51 49 9.5 4.6 1.3 1.8 8 5.5 3.7 25 13 35 24 45 45 9.0 4.6 1.6 2TO~1.6 9 4.6 3.7 20 14 3T 22 41 42 8.5 4.3 1.8 10 4.3 4.0 15 20 37 21 6T 39 8.0 4.3 *1.5 2.1 11 4.0 5.5 13 27 44 20 58 41 9.0 *3.7 1.5 2.1 12 3.7 5.8 11 40 85 20 56 41 3.7 1.3 2.3 13 3.7 21 10 70 -90-195 19.5 63 33 if 3.7 1.5 3.2 14 3.7 23 9.0 110 18.5 73 28 11 4.0 1.5 3.4 15 3.7 *rr.5 8.8 130 87 19.5 63 25 10 4.0 1.6 3.2 16 4.0 13 8.8 120 94 18.5 80 24 9.0 4.3 1.6 2.7 17 3.7 10.5 8.4 110 93 20 145 22 8.0 4.0 1.8 3.0 18 3.7 9.6 8.4 80 87 19.5 110 22 7.4 4.0 2.1 2.7 19 4.0 11.5 27 60 79 18 87 22 7.0 3.7 270 *2.7 20 4.0 11.5 166 50 71 19.5 174 21 6.2 3.2 1.8 3.0 21 3.7 9.6 *150 45 61 28 175 21 6.0 3.2 1.6 3.7 22 3.7 9.2 68 35 56 31 T53"268 18.5 T75-5.5 3.2 1.5 4.0 23 4.0 8.8 45 30 55 34 *17.5 3.2 1.6 4.3 24 4.0 8.8 38 27 55 49 128 27 12 3.2 1.6 470 25 4.0 8.8 45 23 *68 62 126 20 9.0 3.0 1.6 3.4 26 4.6 9.2 83 21 59 51 *156 17 7.5 3.0 1.2 3.2 27 4.3 9.2 58 20 48 *48 121 15 6.8 2.3 173 3.0 28 4.0 8.8 46 *39 41 45 113 13 6.6 2.0 1.6 2.7 29 4.0 8.4 39 74 - 43 103 12 6.1 1.6 1.8 2.7 30 3.7 7.6 34 64 54 94 IF 6.0 14 2.1 2.7 31 3.7 30 75 50 13 T7o 2.0 Total 141.9 254.6 1,051.4 1,431.5 1,818 961.0 2,967 1,042.0 272.1 113.0 50.9 81.3 Mean 4.58 8.49 33.9 46.2 64.9 31.0 98.9 33.6 9.07 3.65 1.64 2.71 Ac-ft 281 505 2,090 2,840 3,610 1,910 5,880 2,070 540 224 101 161 Calendar year 1957: Max 234 Mln 0.9 Mean 21.6 Ac-ft 15,660 Water year 1957-58; Max 268 Mln 1.2 Mean 27.9 Ac-ft 20,210 Peak discharge (base, 400 cfs). Feb. 12 (11:30 p.m.) 826 cfs (6.09 ft); Apr. 3 (1:301:30 p.m.) 524 cfs (5.42 ft); Apr. 17 (3:30 p.m.) 502 cfs (5.37 ft); Apr. 21 (7:30 p.m.) 479 cfs (5.32 ft); Apr. 25 (11:30Ml -3O np.m.) m ^ 4.R1461 ffacfs (5.2s'ft)If, ?fi ft). - Discharge measurement made on this day. Note. No gage-height record Jan. 10-27, May 25 to July 6; discharge estimated on basis of weather records and records for stations on nearby streams. Doubtful gage-height record Dec. 6-20, Dec. 25 to Jan. 3, Jan. 9, Feb. 25, July 12-27; discharge computed from partly estimated gage- height record. WALLA WALLA RIVER BASIN 19

165. East Fork Touehet River near Dayton, Wash.

Location . Lat 46 016'45", long 117°54'05", in NWtrNW^ see. 11, T. 9 N. , R. 39 E. , 50 ft upstream from Dayton water-supply headworks, three-quarters of a mile downstream from Wolf Creek, 3 miles upstream from confluence with South Fork, and 4 miles southeast of Dayton . Drainage area. 102 sq mi. Records available. --April 1941 to September 1951, September 1956 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,868.3 ft above mean sea level (river- profile survey) . April 1941 to September 1951 at site 200 ft upstream at same datum. Average discharge. 12 years (1941-51, 1956-58), 124 cfs (89,770 aere-ft per year). Extremes. Maximum discharge during year, 958 efs Apr. 20 (gage height, 2.64 ft, from high-water mark in well); minimum, 38 efs Sept. 7; minimum gage height, 0.67 ft Oct. 31, Nov. 1. 1941-51, 1956-58: Maximum discharge, 1,530 efs about Jan. 7, 1948 (gage height, 5.28 ft, from recorded range in stage); minimum daily, 27 efs Jan. 25-28, 1957. Remarks . Records good except those for periods of no gage-height record, which are poor. No regulation. Small diversions above station for irrigation. City of Dayton diverts about 1.2 mgd in summer and 0.4 mgd in winter for municipal water supply at the station.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Apr. 20-26, June 9 to Sept. 30) 0.6 1.5 268 .8 75 2.0 485 1.0 128 2.5 790 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 55 42 53 125 215 159 liS 313 135"140 75 45 42 2 67 42 BT 118 171 I2F 147 30T 72 45 42 3 58 42 53 107 140 125 164 194 130 78 45 42 4 50 42 53 102 159 130 169 286 128 TZ 45 42 5 50 42 53 97 157 138 164 29O 120 67 45 42 6 50 42 80 94 145 133 159 290 118 61 45 42 7 53 42 120 91 140 130 152 2S6 112 58 45 4040- 8 50 42 91 88 145 128 150 286 112 55 45 9 47 42 83 88 152 123 147 290 110 53 *45 42 10 47 42 78 88 195 118 164 290 107 *55 47_ 42 11 47 53 72 107 209 115 164 309 105 61 47 42 12 47 50 69 110 209 115 162 301 105 58 47 42 13 47 69 67 118 298 110 171 268 105 58 45 45 14 47 *6T 69 128 275 110 231 241 99 55 45 47 15 47 64 67 192 265 110 234 231 97 55 45 45 16 47 55 69 209 317 110 275 234 97 55 45 42 17 47 53 78 234 350 101 372 244 94 53 45 45 18 47 50 80 237 358 110 450 248 91 53 45 *45 19 47 53 *107 187 354 107 350 241 94 53 45 50 20 45 50 228 162 354 107 a700 265 97 53 i£L 4T 21 45 45 363 154 313 118 a790 272 97 50 42 47 22 47 47 5ET 133 301 118 aSST) 258 91 50 42 47 23 47 47 187 128 298 120 a550 254 86 50 42 47 24 47 47 154 123 309 128 a480 *254 118 50 42 47 25 47 50 150 118 *565 138 *a435 244 94 50 42 45 26 53 53 200 *112 283 *142 408 234 88 47 42 45 27 47 50 181 107 237 142 394 222 83 47 42 42 28 47 53 176 130 200 142 376 206 78 57 42 42 29 47 47 159 183 140 354 176 So 47 42 42 30 45 47 145 254 145 329 154 78 47 42 42 31 42 133 241 142 152 47 42 Total 1,509 1,470 3,734 4,365 6,912 3,885 9,443 7,938 3,089 1,732 1,365 1,312 Mean 48.7 49.0 120 141 247 125 315 256 103 55.9 44.0 43.7 Cfsm 0.477 0.480 1.18 1.38 2.42 1.23 3.09 2.51 1.01 0.548 0.431 0.428 In. 0.55 0.54 1.36 1.59 2.52 1.42 3.44 2.89 1.13 0.63 0.50 0.48 Ac-ft 2,990 2,920 7,410 8,660 13,710 7,710 18,730 15,740 6,130 3,440 2,710 2,600 Calendar year 1957: Max 776 Mln 27 Mean 115 Cfsm 1.13 In. 15.36 Ac-ft 83,560 Water year 1957-58: Max 790 Mln 40 Mean 128 Cfsm 1.25 In. 17.05 Ac-ft 92,750 Peak discharge (base, 700 cfs). Apr. 20 (time unknown) 958 cfs (2.64 ft). ______* Discharge measurement made on this day. a Ho gage-height record; discharge estimated on basis of weather records and records for nearby stations. 20 WALLA WALLA RIVER BASIN

170. Touchet River at Holies, Wash.

Location.--Lat 46"16'30", long 118°13'15", on line between sees. 7 and 8, T. 9 N., R. 37 E., on right bank Just downstream from bridge on State Highway 3E, a quarter of a mile southeast of Holies and 3 miles west of Waitsburg. Drainage area. 372 sq mi. Records available.--February 1924 to October 1929, April 1951 to September 1958. Monthly discharge only for February and March 1929, published in WSP 1318. Average discharge. 12 years (1924-29, 1951-58), 220 cfs (159,300 acre-ft per year). Gage . Water-stage recorder. Altitude of gage is 1,150 ft (from topographic map). Prior Prior to Oct. 5, 1929, water-stage recorder at site half a mile upstream at different datum. Apr. 1 to May 6, 1951, staff gage at present site and datum. Extremes. Maximum discharge during year, 2,420 cfs Apr. 20 (gage height, 8.33 ft); minimum, 25 cfs Aug. 12, 17, 26 (gage height, 4.36 ft). 1924-29, 1951-58: Maximum discharge, 4,470 cfs Jan. 13, 1928 (gage height, 7.04 ft, site and datum then in use); minimum, 1.4 cfs July 30, 1926 (gage height, 0.42 ft, site and datum then in use). Remarks. Records good except those for periods of doubtful gage-height record, which are poor. Diurnal fluctuation and some regulation at low flow caused by operation of flour mill at Waitsburg. Numerous small diversions for municipal and domestic use and for irrigation. Revisions (water years). WSP 1448: 1952-53(M), drainage area.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) (Shifting-control method used Apr. 21 to May 7) Oct. 1 to Apr. 20 Apr. 21 to Sept. 30 4.4 30 6.0 690 4.3 5.5 415 4.7 123 7.0 1,320 4.5 6.0 690 5.0 225 8.0 2,100 4.7 7.0 1,320 5.5 430 4.9 132 8.0 2,100 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dee. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 57 39 66 244 412 372 247 618 92 51 30 33 2 79 39 37 232 364 338 222 5BT 84 49 30 31 3 97 42 91 214 330 313 374 486 77 51 29 34 4 So 42 85 197 305 289 334 492 75 54 30 33 5 60 42 85 190 293 282 240 508 73 5? 31 31 6 60 42 117 187 282 262 208 525 69 51 29 30 7 63 42 262 183 274 244 190 486 67 46 28 29 8 60 42 200 176 270 240 173 470 69 44 29 Z9 9 54 42 173 Teo STaf 222 156 448 71 43 30 29 10 54 42 156 190 330 208 163 448 71 41 *29 30 11 48 63 140 211 403 204 170 464 73 *41 28 30 12 48 66 126 218 465 200 149 481 77 39 26 31 13 48 130 117 270 1,150 190 149 375 80 39 27 39 14 48 *156 117 244 762 187 187 315 77 39 27 43 15 48 130 120 520 728 187 190 295 77 39 28 41 16 48 101 117 500 789 183 346 300 75 37 27 35 17 45 85 133 712 812 183 861 345 73 35 27 37 18 45 79 140 668 800 176 908 360 73 40 29 37 19 45 88 *208 470 772 173 830 400 69 36 28 *36 20 45 79 545 351 734 173 1,420 410 69 34 28 46 21 45 66 878 289 618 204 1,760 426 69 33 28 44 22 45 66 570 255 530 229 1,600 390 63 31 27 47 23 45 66 376 236 490 244 1,190 360 61 33 28 49 24 45 66 305 247 470 258 1,020 *380 63 34 27 51 25 45 66 293 240 759 293 938 360 73 34 27 47 26 48 66 430 229 *580 297 *944 245 73 34 26 44 27 48 66 351 *2l8 495 *293 938 206 67 34' 27 43 28 45 72 342 293 421 285 860 174 59 33 28 43 29 45 63 334 542 - 278 772 140 57 31 30 41 30 42 60 301 540 334 684 120 52 31 35 41 31 39 270 525 266 105 30 34 Total 1,604 2,048 7,545 9,771 14,916 7,607 18,223 11,684 2,128 1,219 887 1,134 Mean 51.7 68.3 243 315 533 245 607 377 70.9 39.3 28.6 37.8 Ac-ft 3,180 4,060 14,970 19,380 29,590 15,090 36,140 23,170 4,220 2*420 1,760 2,250 Caleridar year 1957; Max 2,020 Mln 26 Mean 203 Ae-ft 147,100 Water year 1957-58: Max 1,760 Mln 26 Mean 216 Ac-ft 156,200 Peak discharge (base, 1,500 cfs ).--Feb. 13 (2:30 a.m.) 2,160 efs (8.07.07 ft); Apr. 17 (5:30 p.m.) 2,180 efs (8.03 ft); Apr. 20 (7:30 p.m.) 2,420 efs (8.33 ft); Apr. 21~~ ":30 p.m.) 2,370 efs (8.22 ft). * Discharge measurement made on this day. Note. Doubtful gage-height record Dee. 27 to Jan. 15, Jan. 31 to Feb. 12, Feb. 18-25; discharge estimated on basis of partial gage-height record and records for nearby stations. WALLA WALLA RIVER BASIN 21

185. Walla Walla River near Touchet, Wash.

Location. Lat 46°01'45", long 118 "43 "40", in W^SE^ sec. 6, T. 6 N. , R. 33 E. , on left bank 2f miles southwest of Touchet and 3 miles downstream from Touchet River. Drainage area. 1,660 sq mi, approximately. Records available. October 1951 to September 1958. Gage. Water-stage recorder. Altitude of gage is 405 ft (from topographic map). Prior to Nov. 27, 1951, staff gage at same site and datum. Average discharge. 6 years, 591 cfs (427,900 acre-ft per year). Extremes . Maximum discharge during year, 5,980 cfs Apr. 21 (gage height, 9.30 ft); minimum, 3.3 cfs Aug. 27, 28 (gage height, 1.69 ft). 1951-58: Maximum discharge, 16,300 cfs Feb. 2, 1952 (gage height, 12.10 ft), from rating curve extended above 6,000 cfs on basis of contracted-opening measurement at gage height 13.81 ft; minimum, that of Aug. 27, 28, 1958. Maximum stage known, 13.81 ft in February 1949, from floodmarks (discharge, 23,800 cfs). Remarks . Records good except those below 20 cfs, which are fair, and those for period of no gage-height record, which are poor. Many diversions above station for irrigation.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 13 Feb. 13 to Sept. 30 2.6 100 1.7 3.5 3.5 370 3.O 195 1.8 S.O 4.0 600 3.5 365 2.0 24 5.0 1,200 4.0 590 2.2 47 6.0 1,970 5.O 1,240 2.5 92 8.0 4,220 7.0 3,100 3.O 202 10.0 7,180 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dee. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 120 112 158"187 778 1,820 1.16O 91O 1,940 432 60 5.3 18 2 158 T2Q-104 712 1,590 1,040 l.OSO" T,-?fo 3T5 54 8.0 15.5 3 258 219 646 1,420 958 1,190 1,630 33O 53 TT~12.5 6.2 4 m 116 219 600 1,260 880 1,420 1,51O 295 64 5.8 5 182 116 222 560 1,200 832 1,300 1,470 267 ST 6.6 TT 6 182 108 237 520 1,26O 814 1,190 1,470 210 50 7.6 8.8 7 184 110 446 500 1.150 730 1,070 1,540 184 42 5.8 7.1 8 204 114 575 480 1,226 695 1,010 1,440 179 39 6.6 7.1 9 190 116 486 450 1,270 660 94O 1.41O 184 39 5.8 7.6 1O 179 116 441 420 1,36O 620 958 1,380 208 36 6.6 6.6 11 163 122 397 500 1,580 590 1,260 1,390 166 33 6.6 6.2 12 156 146 365 540 1,560 57O 1,180 1,530 174 26 6.6 6.2 13 153 192 341 700 5,08O 535 1,140 1,25O 264 15.5 6.6 7.1 14 153 349 337 900 2,620 5O5 1,360 1,050 260 14 7.1 8.0 15 146 *401 385 1,050 2,150 500 1,360 976 208 13 6.6 23 16 141 3O8 393 990 2,420 505 1,520 970 174 13 8.0 27 17 141 255 413 9 2O 2,720 510 1,730 982 141 15.5 8.8 24 18 141 225 437 2,100 2,710 520 3,310 988 108 21 7.6 22 19 138 216 468 1,800 2,640 486 2,830 1,030 86 16.5 7.1 20 20 141 222 960 1,500 2,350 482 2,880 1,05O 82 21 7.1 *28 21 150 213 2.550 1,300 2,130 525 5,610 1,05O 76 16.5 7.6 39 22 192 198 *2,120 1,100 1,890 680 4.980 988 62 16.5 5.8 53 23 192 195 1,340 930 1,870 700 4,330 940 57 14 4.4 61 24 195 19O 1,03O 800 1,910 736 3,570 898 53 11 5.3 62 25 195 190 908 900 2,450 928 3,320 1,09O 61 12 6.2 12 26 173 19O 1,210 1,04O 1,920 1,040 3,190 *826 74 9.5 4.8 66 27 156 192 1,220 880 *1,550 982 3,120 772 78 10 4.0 68 28 141 195 1,140 760 1,330 *934 *2,720 685 66 12.5 3.5 62 29 122 201 1,13O *1,160 892 2,390 590 61 15 4TI 61 30 122 182 999 2,540 952 2,130 505 60 8 .0 4.4 60 31 114 874 1,990 898 45O 5.3 5 . 8 Total 5,095 5,514 22,O27 29,866 52,410 22,859 64,938 35,57O 4,981 816.8 204.1 863.3 Mean 164 184 711 963 1,872 737 2,165 1,147 166 26.3 6.58 28.8 Ac-ft 10,110 10,940 43,690 59,240 104,000 45,340 128,800 70,550 9,880 1,62O 405 1,710 Calendar year 1957: Max 4,64O Mln 9.2 Mean 602 Ae-ft 436,000 Water year 1957-58: Max 5,610 Mln 3.5 Mean 672 Ac-ft 486, 30O

eak discharge (base. 3.0OO efs}. Feb. 13 (12 ra.) 4,620 efs (8.33 ft); Feb. 25 (2:30 p.m.) 3,060 cfs (7.05 ft); Apr. 18 (4 a.m.) 5,660 cfs (7.53 ft); Apr. 21 (9 a.m.) 5,980 efs (9.3O ft) * Discharge measurement made on this day. Note. No gage-height record Jan. 5-27; discharge estimated on basis of weather records and records for nearby stations. 22 WALLA WALLA RIVER BASIN, OREG.-WASH.

Springs in the Walla Walla River basin, Oreg.-Wash.

Ground-water overflow through many springs on the alluvial fan of the Walla Walla River near Milton-Preewater, Oreg., amounts to about 50,000 acre-ft a year. During the irriga tion season practically all the overflow is used to water crops on land not served by diversion from the river. A survey made in 1933 listed 57 springs or spring groups in the area, arranged in "inner," "intermediate," and "outer" zones concentric about the apex of the alluvial fan. 1 The inner zone is 3 to 3j miles below Milton-Preewater and extends from the vicinity of Nicholas Spring, which is about half a mile east of the Walla Walla River at McCoy Bridge, to springs in the vicinity of Dugger Creek. Within this zone are fully three-fourths of the springs in the Walla Walla River basin. The intermediate and outer zones, each of which contains only a few springs, are about 2 and 4 miles, respectively, beyond the inner zone. In order to bring about a more effective use of the available water supply through a better understanding of the relation between surface- and ground-water supplies in the basin, discharge measurements of each of the principal springs and measurements of ground- water levels in representative wells have been made and the results published periodi cally since 1932.

Discharge measurements, In cubic feet per second, of springs In Walla Walla River basin, Oreg.-Wash., during water year October 1957 to September 1958t

Springs of the Inner zone Discharge Date Spring Location (ofs) Nov. 22 Big Spring Branch (west SE£NW£ sec. 24, T. 6 N., R. 35 E., at Ballou resi 5.03 prong), Oreg. dence, 75 ft above bridge on county road. Mar. 26 ...do ...... ,------.-----. 4.81 June 5 ....do...... 9.47 Aug. 16 ....do...... do...... 5.09 Nov. 22 Big Spring Branch (east NE£Sw£ sec. 24, T. 6 N., R. 35 E., above flow line 2.27 prong), Oreg. of small reservoir supplying two diversion pumps. Mar. 23 2.11 June 7 ....do...... 3.55 Aug. 16 1.33 Nov. 25 Engle Spring, Oreg..... NWfcSEi sec. 23, T. 6 N., R. 35 E., total flow at 2.76 diversion dam. June 7 ....do...... do...... 3.46 Aug. 16 2.84 Nov. 22 Downing Spring, Oreg . . . SE^SWi sec. 23, T. 6 N., R. 35 E., at weir, 200 ft .15 below spring orifice. Mar. 26 .06 June 7 ....do...... 1.99 Aug. 16 ....do...... do...... 1.65 Nov. 22 Haun Spring, Oreg ...... NW£SE£ sec. 23, T. 6 N., R. 35 E., at Haun farm, .82 200 ft above highway crossing. Mar. 26 .85 June 5 ....do...... 1.80 Aug. 16 ....do...... do...... 1.20

Springs of the Intermediate and outer zones Nov. 22 MoEvoy Spring, Wash.... SE^NWi sec. 10 , T. 6 N., R. 35 E., at McEvoy farm, 2.24 200 ft above Walla Walla Railway. Mar. 26 ... .do. ....--- 2.08 June 5 1.46 Aug. 16 1.97 Nov. 22 Lewis Spring, Oreg..... NW^NWt sec. 23 , T. 6 N., R. 35 E., below road 1.47 crossing. Mar. 26 1.93 June 4 1.96 Aug. 16 do 2.61 Nov. 22 Unnamed Spring, Wash. . . NWjNE£ sec. 16, T. 6 N., R. 35 E., at small dlver- 1.90 slon structure. Mar. 26 .. .do . . - - . . - - . 1.43 June 5 1.32 Aug. 16 ....do...... do..... 2.11 Nov. 23 East Mud Greek (west SW£SW£ sec. 22 , T. 6 N., R. 35 E., at two weirs... 1.27 prong), Oreg. Mar. 27 1.03 June 5 1.40 Aug. 15 do 1.89 Nov. 23 East Mud Greek (east SEjSWt sec. 22, T. 6 N., R. 35 E., In diversion .75 prong), Oreg. ditch, 150 ft below diversion dam. Mar. 27 . . .do. . ------.57 June 5 .72 Aue. 15 ....do...... do...... 82

t Measurements by Umatllla County deputy watermaster.

Piper, A. M., Robinson, T. W., and Thomas, H. E., Ground Water In the Walla Walla River Basin, Oreg.-Wash.: Supreme Court of the United States, October term 1935, State of Washington vs. State of Oregon, transcript of record, p. 132A, October 14, 1935. WALLA WALLA RIVER BASIN, OREG.-WASH. 23

Springs in the Walla Walla River basin, Oreg.-Wash. Continued

Discharge measurements, in cubic feet per second, of springs in Walla Walla River basin, Oreg.-Wash., during water year October 1957 to September 1958t Continued Springs of the intermediate and outer zones Continued Discharge Date Spring Location (cfs)

Nov. 25 East Mud Creek (branch SWiSWj see. 16, T. 6 N., R. 35 E., near Lockwood 2.48 of), Oreg. dwelling. Mar. 26 .92 June 5 1.20 Aug. 16 .31 Nov. 23 South Mud Creek, Oreg.. SEjNWi sec. 28, T. 6 N., R. 35 E., at Von Der Ahe 3.52 farm. Mar. 27 1.00 June 5 2.85 Aug. 15 1.20 Nov. 22 Johnson Greek, Oreg... SEiNW£ see. 29, T. 6 N., R. 35 E., at two weirs.... 3.25 Mar. 27 1.29 June 6 1.87 Aug. 15 1.30 Nov. 23 Dugger Creek, Oreg..... NW-jNWj see. 32, T. 6 N., R. 35 E., at two weirs.... 9.45 Mar. 27 ....do...... do...... 3.42 June 3 6.50 Aug. 15 ....do...... 3.44 Nov. 23 Schwartz Spring Branch SWFSEi see. 23, T. 6 N., R. 34 E., at weirs...... 1.76 (south prong), Oreg. Mar. 27 3.47 June 3 ....do...... 2.72 Aug. 15 .71 Nov. 23 Schwartz Spring Branch NEiSEj see. 23, T. 6 N., R. 34 E., in ditch divert- 2.78 (north prong), Oreg. ing from spring. Mar. 27 4.71 June 3 ....do...... do...... 2.50 Aug. 15 2.51 Nov. 23 South Mud Creek, Oreg. SWjSEj see. 13, T. 6 N., R. 34 E., at Krumbaugh 3.09 farm. Mar. 27 ....do...... do...... 2.96 June 3 ....do...... do...... 3.40 Aug. 15 .....do...... do...... 1.20 t Measurements by Umatilla County deputy watermaster. 24 UMATILLA RIVER BASIN

200. Umatilla River above Meacham Creek, near Gibbon, Oreg.

Location. Lat 4S°43', long 118°20', in SW^ sec. 21, T. 3 N., R. 36 E., on right bank 0.8 mile downstream from Ryan Creek, 2£ miles upstream from Meacham Creek, and 2| miles northeast of Gibbon. Drainage area. 125 sq mi. Records available.--April 1933 to September 1958. Gage.--Water-stage recorder. Datum of gage is 1,854.81 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Prior to June 27, 1939, at site 1 mile down stream at datum 43.94 ft lower. Average discharge. 25 years, 225 cfs (162,900 acre-ft per year). Extremes.--Maximum discharge during year, 4,620 cfs Apr. 20 (gage height, 7.78 ft), from rating curve extended above 1,800 cfs by logarithmic plotting; minimum, 41 cfs Aug. 12. 1933-58: Maximum discharge, 6,660 cfs Dec. 12, 1946 (gage height, 8.84 ft), from rating curve extended above 2,000 cfs by logarithmic plotting: minimum, 28 cfs Sept. 27, 1935, Jan. 9, 1937. Remarks. Records good. Revisions (water years). WSP 1398: 1933, drainage area (former site).

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 21 Dec. 22 to Sept. 30 2.1 3.5 415 2.0 3.5 425 2.3 61 4.0 690 2.2 4.0 690 2.6 110 5.0 1,480 2.5 102 5.0 1,480 3.0 215 2.7 140 7.0 3,550 3.0 225 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 57 50 80 192 384 307 259 774 249 70 48 47 2 a* 49 84 171 340 267 291 767 231 68 48 47 3 71 49 82 155 291 246 362 739 204 68 48 47 4 56 49 82 142 255 *225 *402 711 213 65 47 47 5 57 49 84 134 259 213 384 725 192 64 46 46 6 59 49 114 128 287 195 344 907 192 62 46 46 7 71 49 528 122 340 183 311 879 180 62 46 46 8 65 48 388 122 410 171 295 851 162 61 47 46 9 60 48 286 118 398 158 283 851 186 59 46 *45 10 56 48 222 116 420 148 421 837 152 58 15 45 57" 11 55 56 185 142 420 142 630 844 142 46 45 12 54 61 158 249 402 136 588 739 158 56 45 48 13 53 126 *140 303 *545 134 588 582 186 56 45 50 14 53 161 126 295 470 130 753 500 152 56 45 50 15 51 138 116 448 407 132 678 490 136 *56 45 5_3 16 50 114 118 366 582 130 678 515 126 56 45 49 17 50 99 145 547 837 130 1,010 550 120 56 45 47 18 50 *94 150 135 1.070 128 1,480 576 115 55 45 47 19 49 103 179 376 1,070 130 1,140 618 107 55 45 49 20 49 101 475 283 970 138 2,560 612 *100 54 45 49 21 49 92 739 234 844 162 2,750 618 96 53 45 49 22 50 87 510 198 809 192 1,830 565 91 53 45 49 23 50 82 353 *183 830 216 *1,350 545 85 51 *45 50 24 50 82 279 177 844 *252 1,150 485 97 51 45 49 25 53 84 291 171 851 271 1,070 480 88 50 45 *49 26 61 90 407 171 618 267 1,030 434 82 50 45 49 27 59 92 353 171 461 259 978 402 78 50 45 49 28 55 92 311 195 366 259 886 358 75 49 46 49 29 *54 84 283 343 - 252 788 311 72 49 48 49 30 53 80 246 510 255 774 271 li 49 48 49 31 51 210 443 255 271 49 47 Total 1,735 2,406 7,724 7,740 15,780 6,083 26,063 18,807 4,138 1,748 1,422 1,440 Mean 56.0 80.2 249 250 564 196 869 607 138 56.4 45.9 48.0 Cfsm 0.448 0.642 1.99 2.00 4.51 1.57 6.95 4.86 1.10 0.451 0.367 0.384 In. 0.52 0.72 2.30 2.30 4.69 1.81 7.75 5.60 1.23 0.52 0.42 0.43 Ac-ft 3,440 4,770 15,320 15,350 31,300 12,070 51,700 37,300 8,210 3,470 2,820 2,860 Calendar year 1957: Max 1,980 Mln 40 Mean 228 Cfsm 1.82 In. 24.79 Ac-ft 165,200 Water year 1957-58: Max 2,750 Mln 45 Mean 261 Cfsm 2.09 In. 28.29 Ac-ft 188,600 Peak discharge (base, 1,400 cfs). --Apr. 20 (9 p.m.) 4,620 cfs (7.78 ft). * Discharge measurement made on this day. UMATILLA RIVER BASIN 25

210. Umatilla River at Pendleton, Oreg.

Location.--La t 45°40'20", long 118 "47'40", in SW-jj sec. 2 (revised) T. 2 N., R. 32 E., on left bank a quarter of a mile upstream from Main Street Bridge at Pendleton and 2-g- miles upstream from McKay Creek. Drainage area. 637 sq mi. Records available.--February 1891 to July 1892, May 1903 to June 1905 (gage heights and discharge measurements only June to December 1904), October 1934 to September 1958. Monthly discharge only February 1891 to July 1892, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,062.39 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. February 1891 to July 1892 and May 22, 1903, to June 11, 1905, staff gage at Main Street Bridge at different datum. Supplementary water-stage recorder at site 600 ft upstream at different datum used for some low- water periods August 1942 to January 1953 and July 3 to Sept. 30, 1958. Average discharge. 24 years (1934-58), 503 cfs (364,200 acre-ft per year). Extremes. Maximum discharge during year, 10,500 cfs Apr. 21 (gage height, 5.84 ft), from rating curve extended above 3,600 cfs; minimum, 17 cfs Aug. 14. 1891-92, 1903-5, 1934-58: Maximum discharge, 15,400 cfs Feb. 22, 1949 (gage height, 9.01 ft); minimum, 10 cfs July 13-16, 1940. Maximum flood known, 17,000 cfs Dec. 14, 1882 (date and discharge from data fur nished by Corps of Engineers). Flood of May 30-31, 1906. reached a stage of 11.0 ft, present site and datum, but before channel was improved (discharge, 15,500 cfs, esti mated by Corps of Engineers). Remarks. Records fair except those for periods of no gage-height record, which are poor. No regulation. Diversions for irrigation of 1,100 acres above station. Revisions (water years).--WSP 1398: 1904, 1937.

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 57 75 140 536 1,190 910 740 a2.000 362 99 32 34 2 80 73 144 488 1,060 780 811 al,900 362 93 52 55 3 95 73 144 433 946 *690 970 al , 700 358 92 32 34 4 86 75 14O 384 844 620 *1,070 al,600 316 95 36 36 5 78 75 140 358 800 564 1,100 al,600 302 86 38 38 6 78 75 157 334 866 519 1,040 al,600 *274 72 34 56 7 86 75 943 304 970 454 958 al,750 a265 70 28 54 8 89 75 1,080 286 1,190 430 910 al,750 254 *78 52 *30 9 86 75 830 274 1,220 402 888 al,650 516 74 34 34 10 80 75 654 262 1,230 367 1,040 al , 500 281 64 36 53 11 78 75 552 304 1,290 347 1,620 al,500 248 60 35 32 1Z 75 83 464 584 1,270 354 1,600 al,450 242 58 55 58 13 73 125 398 978 1,510 *328 1,570 al,250 502 a55 50 44 14 73 217 346 967 *1,460 521 1,840 al,100 254 52 26 48 15 71 259 304 1,510 1,300 328 1,770 al,000 242 51 24 50 16 71 234 286 1,280 1,670 328 1,670 *975 *218 50 26 50 17 68 200 310 1,570 2,250 328 1,840 1,050 200 46 30 48 18 66 181 346 1,770 3,120 328 3,280 1,040 184 46 a29 45 19 68 *181 *405 1,320 5.590 328 2,700 1,120 167 45 a28 42 20 68 200 860 1,040 3,000 334 3,830 1,130 *162 45 28 44 21 66 190 1,640 866 2,620 388 8.020 1,150 157 *42 28 46 22 66 176 1,340 740 2,450 494 5,310 1,010 125 40 *30 51 23 66 162 1,000 660 2,430 610 *3,540 *900 *121 45 50 *51 24 68 153 810 610 2,450 740 a3,300 a880 121 40 50 54 25 71 144 720 564 2,490 822 a3,100 870 137 39 50 51 26 75 153 880 546 1,930 811 a2 , 900 688 113 39 26 48 27 78 167 890 537 1,420 780 a2,700 633 *113 41 26 48 28 *78 172 850 564 1,110 760 a2,450 570 109 38 27 46 29 75 167 800 740 - 76O a2,200 482 a!05 *35 52 42 30 75 148 710 1,270 760 a2,100 419 li 32 36 45 31 75 600 1,270 740 402 32 36 Total 2,319 4,113 18,883 23,349 47,456 16,705 66,867 56,669 6,469 1,752 952 1,265 Mean 74.8 137 609 753 1,695 539 2,229 1,185 216 56.5 30.7 42.2 Ac-ft 4,600 8,160 37,450 46,310 94,130 33,130 132,600 72,730 12,830 3,480 1,890 2,510 Calendar year 1957: Max 5,250 Min 27 Mean 550 Ac-ft 398,200 Water year 1957-58: Max 8,020 Min 24 Mean 621 Ac-ft 449,800 Peak discharge (base, 3,200 cfs). Feb. 19 a.m.) 3,540 cfs (5.78 ft); Apr. 21 (7:50 a.m. 10,500 cfs (5.84 ft). * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for station at Yoakum. Note.--Discharge computed from temporary wire-weight-gage readings at site a quarter of a mile downstream May 16 to July 2 when recorded gage heights were not representative of flow.

534540 O -60 - 3 26 UMATILLA RIVER BASIN

225. McKay Creek near Pilot Rock, Oreg.

Location. Lat 45°33'10", long 118°46'20", in NE£ sec. 23, T. IN., R. 32 E., on left bank 400 ft downstream from county road bridge, three-quarters of a mile upstream from maxi mum flow line (altitude, 1,322 ft) of McKay Reservoir, 6 miles northeast of Pilot Rock, and 8 miles south of Pendleton. Drainage area. 178 sq mi. Records available.--May to August 1921, October 1926 to June 1928, December 1928 to July 1929, October 1929 to September 1958. Monthly discharge only for some periods, pub lished in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,335.68 ft above mean sea level, datum of T929, supplementary adjustment of 1947. May 7 to Aug. 14, 1921, staff gage near pres ent site at different datum. Nov. 19, 1926, to Sept. 15, 1932, and Sept. 16, 1932, to Apr. 8, 1941, water-stage recorder at site 400 ft upstream at daturas 1.4 and 4.4 ft higher, respectively. Average discharge. 30 years (1926-27, 1929-58), 99.7 cfs (72,180 acre-ft per year). Extremes. Maximum discharge during year, 2,830 cfs Apr. 20 (gage height, 5.76 ft); no flow Aug. 21, Aug. 24 to Sept. 8. 1921, 1926-58: Maximum discharge, 6,000 cfs Apr. 1, 1931 (gage height, 10.4 ft, site and datum then in use), from rating curve extended above 220 cfs by logarithmic plotting; no flow at times. Remarks.--Records good. No regulation. Many small diversions for irrigation above station. Revisions (water years). WSP 1398: 1928-29, 1933, 1940.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1.7 8.1 30 118 226 174 171 836 38 10 0.7 0 2 2.0 8.1 30 104 206 157 177 672 38 10 .6 0 3 2.4 8.1 28 87 186 143 192 532 35 10 .6 *0 4 2.8 S.5 27 77 168 126 198 434 33 9.0 .4 0 5 3.1 8.5 27 68 162 118 220 378 29 9.0 .4 0 6 3.4 8.1 31 61 171 111 212 372 26 8.5 .2 0 7 3.8 S.I 587 56 212 99 206 345 40 8.5 .2 0 8 3.8 8.1 432 52 294 95 202 290 33 8.5 .2 0 9 4.2 8.1 256 49 290 86 192 252 40 7.5 .2 .1 10 4.2 8.1 179 48 290 80 262 228 38 *6.5 .2 .1 11 4.5 8.1 138 52 274 76 458 236 33 6.5 .2 .1 12 4.5 9.0 111 99 294 72 428 260 35 3.2 .1 .1 13 4.5 21 93 256 428 68 390 *220 40 1.7 .1 .1 14 4.9 64 79 488 370 65 458 192 38 1.7 .1 .2 15 4.9 68 70 *1.270 390 70 405 170 36 1.7 .1 .4 16 4.5 56 66 796 812 66 385 149 30 1.7 .1 .6 17 4.5 46 70 1,120 852 80 470 131 25 1.7 .1 .7 18 4.5 42 66 964 1.050 95 670 112 24 *1.7 .1 .9 19 4.9 56 71 586 860 111 621 98 20 1.7 .1 .9 20 5.3 63 230 395 719 136 1,420 88 19 1.7 .1 1.1 21 5.3 58 485 302 586 198 2,110 88 16 1.7 ~.l0 1.1 22 *5.3 53 348 242 5OO 242 2,400 72 14 a.o 1.1 23 5.3 48 244 209 464 266 1,760 66 12 1.7 .1 1.1 24 5.3 43 185 183 422 258 1,500 68 12 1.5 0 1.5 25 5.7 41 164 171 405 242 1,450 80 12 1.3 0 *1.3 26 7.3 40 173 162 315 226 1,620 *62 12 1.3 0 1.3 27 8.1 38 161 152 250 212 1,410 56 11 1.1 0 1.3 28 8.5 38 173 168 206 206 1,300 54 TT .9 0 1.3 29 Q~~R9.0 34 179 227 - 198 1,160 45 11 0 1.3 30 a . o 31 161 298 189 1,020 35 11 ill 0 1.3 31 8.1 135 258 18O 37 g 0 Total 154.8 938.9 5,029 9,118 11,382 4,445 23,467 6,658 772 125.0 5.0 17.7 Mean 4.99 31.3 162 294 406 143 782 215 25.7 4.03 0.16 0.59 Ac-ft 307 1,860 9,970 18,090 22,580 8,820 46,550 13,210 1,530 348 9.9 35 Calendar year 1957 : Max 1,760 Mln 0.1 Mean 116 Ae-ft 83,620 Water year 1957-58 : Max 2,400 Mln 0 Mean 170 Ae-ft 123, 20O Peak discharge (base, 70O cfs).--Dec. 7 (3:30 a.m.) 7OO cfs (3.75 ft); Jan. 14 (10 p.m.) 1,540 cfs (4.68 ft); Jan. 17 (3 p.m.) 1,67O cfs (4.SO ft); Feb. 18 (5 a.m.) 1.15O cfs (4.29 ft); Apr. 2O (9:50 p.m.) 2,850 cfs (5.76 ft). ______« Discharge measurement made on this day. UMATILLA RIVER BASIN 2

230. McKay Reservoir near Pendleton, Oreg.

Location. La t 45°36'30", long 118°47'40", in SE£ sec. 34, T. 2 N., R. 32 E., near right end of McKay Dam, 4 miles south of Pendleton. Drainage area. 186 sq mi. Records available. December 1927 to September 1958. Gage. Staff gage. Datum of gage is at mean sea level, adjustment of 1924 (levels by Bureau of Reclamation). For datum of 1929, supplementary adjustment of 1947, add 0.16 ft. Extremes. Maximum contents observed during year, 73,710 acre-ft Apr. 22 (elevation, 1,321.9 ft); minimum observed, 5 160 acre-ft Sept. 30 (elevation, 1,224.5 ft). 1927-58: Maximum contents, 73,840 acre-ft June 9, 1950 (elevation, 1,322.0 ft); minimum observed, 3,050 acre-ft Oct. 1, Nov. 1, Dec. 1, 1935 (elevation, 1,217.6 ft). Remarks. Reservoir is formed by gravel-fill dam with concrete facing completed in 1926; storage began in 1927. Usable capacity, 73,830 acre-ft, between elevations 1,182.0 (floor of trash-rack structure) and 1,322.0 ft (top of spillway gates). Dead storage about 6 acre-ft, included in contents given herein. Water is used for irrigation of lands along Umatilla River near Echo, Stanfield, and Hermiston. Cooperation. Elevations and capacity table furnished by Bureau of Reclamation. Revisions. WSP 1154: Drainage area.

Month-end elevation and total contents, water year October 1957 to September 1958 Elevation Contents Change In contents Date (feet)t (acre-feet) (acre-feet) _ 1,227.3 +210 Dec . 31 ...... 1,254.9 18,090 +10,150

1,318.4 +3,310 May 31 ...... +2,680

Sept . 30 ...... 1,224.5 5,160 -9,710 Water year 1957-58 ...... - - -760 t Elevation at 4 p.m. 28 UMATILLA RIVER BASIN

235. McKay Creek near Pendleton, Oreg. Location. Lat 45°36'40", long 118°48'00", in SEvNWij sec. 34, T. 2 N. , R. 32 E. , on right bank 35 ft upstream from irrigation diversion dam, a quarter of a mile downstream from McKay Dam, and 4 miles south of Pendleton. Drainage area. 186 sq mi. Records available. --November 1918 to May 1919, October 1919 to September 1923, October 1924 to September 1927, November 1927 to September 1943, April 1944 to October 1947 (irrigation seasons only), March 1948 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage . Water-stage recorder and since Mar. 23, 1928, concrete control. Datum of gage is T.163.71 ft above mean sea level (Bureau of Reclamation bench mark). Prior to Apr. 16, 1919, staff gage at site 2 miles upstream at different datum. Apr. 16, 1919, to Sept. 30, 1923, staff gage at site a quarter of a mile upstream at different datum. Oct. 1, 1924, to Jan. 14, 1927, staff gage and Jan. 15, 1927, to Nov. 15, 1948, water- stage recorder, at several sites within 220 ft of present site at various daturas. Average discharge. --21 years (1932-43, 1948-58), 94.1 cfs (68,130 acre-ft per year). Extremes . Maximum discharge during year, 2,520 cfs Apr. 23 (gage height, 4.50 ft, backwater from trees); no flow Nov. 21 to Jan. 31, Sept. 20-30. 1918-23, 1924-58: Maximum discharge observed, 3,250 cfs Feb. 10, 1921 (gage height, 4.4 ft, site and datura then in use), from rating curve extended above 1,200 cfs; no flow at times each year. Remarks . Records good except those for period of backwater from trees and those below 10 cfs, which are poor. Flow completely regulated since 1927 by McKay Reservoir (see preceding page). Many diversions for irrigation above station. Since 1932, records have excluded flow in Elder ditch which, since 1953, has diverted not over 3 cfs at station for irrigation during season, and up to 1 cfs (seepage from reservoir) for stock water at other times. Revisions (water years ).--WSP 1154: Drainage area. WSP 1398: 1923.

Rating tables, water year 1957-58, except period of backwater from trees (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Mar. 3 Mar. 4 to Sept. 30 -0.1 -0.1 0.3 23 1.5 345 0.0 .2 0.0 .2 .5 2.0 630 .1 3.0 .1 3.8 .7 3.0 1,530 .2 12 1.0 170 3.8 2,460 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 0.8 0.2 1.5 378-3.8 764 37 314 425 292 2 .8 .3 rrs 560 24 314 375 288 3 .8 77 1.5 3.8 355 19 314 456"456 284 4 .6 .3 1.9 *3.8 218 19 314 280 5 .4 .2 2.3 4.6 54 35 314 *456 276 > 0.2 6 .3 .1 2'. 3 4.6 158 113 314 450 272 7 .3 .1 2.3 4.6 336 130 336"309 . 0 268 8 .3 .1 2.3 4.6 280 130 4*5 *254 9 .3 2.7 5.4 149 74 345 430 245 10 .3 2.7 37 115 16_ 355 415 242 11 .2 3.2 208 143 70 380 415 242 12 .2 2.7 318 248 122 380 415 254 13 .2 2.7 322 *236 *122 380 410 260 14 .2 2.7 318 132 122 380 380 257 15 .2 ' .1 3.2 322 100 122 *3.75 355 254 > .5 16 .2 3.2 327 *69 132 375 355 242 17 .2 2.7 249 59 179 385 350 233 18 .2 2.7 350 50 236 420 34O 174 19 .2 2.7 360 36 288 415 336 .5 20 .2 2.7 494 30 309 410 322 0_ 21 .2 2,7 1,240 12 332 410 314 0 22 .2 2.7 *2,420 6^3 355 *410 314 0 23 .2 3.2 2,080 19 360 410 309 0 24 .2 3.2 1,620 19 375 405 304 0 25 .2 *3.2 1,510 42 345 405 314 0 > 0 ' 1.0 26 .2 3.2 1,450 *55 340 400 332 o 27 .1 476-7.9 1,390 66 *345 400 327 0 28 TT *1,290 55 340 395 *327 0 29 .1 - 3.8 1,140 37 318 395 322 0 30 .1 3.8 *967 314 410 309 o 31 .2 3.8 37 467 296 Total 8.7 2.8 0 0 15.0 91.6 18,451.0 4,477.3 5,723 11,636 11,504 4,617.5 Mean 0.28 0.09 0 0 0.54 2.95 615 144 191 375 371 154 Ac-ft 17 5.6 0 0 30 182 36 , 6OO 8,880 11,350 23,080 22,820 9,160 Calendar year 1957: Max 462 Min 0 Mean 109 Ac-ft 78,80O Water year 1957-58: Max 2,420 Min 0 Mean 155 Ac-ft 112,100 * Discharge measurement made on this day. Note. No gage-height record Nov. 9 to Mar. 3; discharge estimated on basis of contents of McKay Reservoir and occasional weir readings on Elder ditch diversion, which Is not Included. Backwater from trees Apr. 23-26. UMATILLA RIVER BASIN 29

250. Birch Creek at Rieth, Oreg.

Location. Lat 45°39'10", long 118°52 I 45", in SE£ sec. 13, T. 2 H., R. 31 E., on right bank 600 ft downstream from highway bridge, a quarter of a mile upstream from mouth, and half a mile southwest of Rieth. Drainage area. 291 sq mi. Records available.--May to August 1921, March to July 1922, April to September 1923, April to September 1927, January to June 1928, November 1928 to August 1929, October 1929 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 951.04 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Prior to Apr. 4, 1927, staff gages at several sites within 1,400 ft upstream at various datums. Apr. 4, 1927, to Jan. 29, 1928, water-stage recorder and Feb. 3, 1928, to Dec. 16, 1931, "Staff gage, at site 600 ft upstream at different datum. Dec. 17, 1931, to Dec. 29, 1939, water-stage recorder at site 300 ft upstream at datum 1.64 ft higher, and Dec. 30, 1939, to July 24, 1957, at datum 0.78 ft higher. Average discharge.--29 years (1929-58), 47.7 cfs (34,530 acre-ft per year). Extremes. Maximum discharge during year, 787 cfs Apr. 21 (gage height, 4.02 ft); no flow part of each day Oct. 1, 3, 4, Aug. 25, 26. 1921-23, 1927-58: Maximum discharge, 1,860 cfs June 17, 1950 (gage height, 7.2 ft, from floodmark, site and datum then in use), from rating curve extended above 570 cfs by logarithmic plotting; no flow at times. Remarks. Records fair except those above 150 cfs, which are poor. No regulation. Many diversions for irrigation of 4,000 acres above station. Revisions (water years).--WSP 984: 1939. WSP 1398: 1929, 1932-33, 1938-39, 1940(M).

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Jan. 17 Jan. 18 to Sept. 30 0.1 0.7 0.1 0.7 2.0 225 .2 .4 1.0 .2 .6 1.0 2.5 345 .3 4.5 1.2 .3 3.5 1.2 3.0 470 .5 14 1.5 .5 14 1.5 127 4.0 780 Discharge, in cubic feet per second, water year October 1957 to September 1953 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 0.2 14 14 54 106 181 122 491 48 2.0 0.1 0.1 2 .2 15 *14 52 100 157 122 470 50 .6 .1 .1 3 .1 16 14 50 95 141 129 438 48 1.2 .1 *.l 4 .2 15 14 48 86 125 127 405 33 2.0 .1 .1 5 5.8 14 17 47 82 117 127 368 25 5.5 .1 .1

6 8.6 12 21 46 89"79 102 *124 418 21 1.8 .1 .1 7 10 IF 35 43 92 119- 400 20 2.6 .1 .1 8 9.4 12 79 42 102 88 114 358 21 .9 .1 .1 *80 9 7.2 12 4T 100 82 149"113 315 ~§B-139 .6 .1 .1 10 7.2 12 74 43 104 73 280 .9 .1 .1 11 8.1 13 70 44 105 *74 189 260 60 3.5 .1 .1 12 8.6 15 62 51 108 70 243 252 62 2.6 .1 .1 13 9.9 18 56 *53 *113 *65 241 *219 72 1.2 .1 .1 14 9.4 23-24 52 55 110 65 308 191 64 1.8 .1 .1 15 11 49 118 136 72 320 163 54 2.3 .1 .2 16 12 23 47 100 255 65 310 143- *46 1.8 .1 .2 17 9.9 20 49 125 239 81 332 125 32 .9 .1 .2 18 11 22 49 *197 420 95 365 111 25 *.6 .1 .2 19 11 *24 50 167 *432 93 358 95 17 .6 .1 .4 20 12 20 62 143 408 *106 355 77 13 .6 .1 .4 21 11 17 83 121 *392 124 *644 73 2.3 .9 .1 .9 22 11 16 99 106 352 140 674 59 1.5 .6 .1 1.2 23 11 17 94 96 335 143 533 52 1.5 .4 .1 1.2 24 12 17 86 88 332 151 500 54 2.3 .6 .1 1.5 25 12 17 79 82 458 151 494 78 2.3 .4 .1 T75 26 14 17 80 77 345 143 476 59 .4 .2 .1 1.2 27 14 17 76 70 268 132 488 56 .4 .2 .1 1.5 28 *14 16 73 68 217 129 458 54 .4 .2 .1 1.2 29 14 16 70 70 _ 127 465 46 2.0 .1 .1 1.2 30 14 16 67 106 125 465 40 3 2 72 .1 .9 31 14 56 113 121 45 .1 .1 Total 292.8 502 1,771 2,518 5,948 3,430 9,464 6,195 951.3 35.9 3.1 15.3 Mean 9.45 16.7 57.1 81.2 212 111 315 200 31.7 1.16 0.10 0.51 Ao-ft 581 996 3,510 4,990 11,800 6,800 18,770 12,290 1,890 71 6.1 30 Calendar year 1957: Max 425 Mln 0 Mean 50.7 Ac-ft 36,700 Water year 1957-58: Max 674 Mln 0.1 Mean 85.3 Ao-ft 61,730

Peak discharge (base, 300 cfs). Feb. 18 (l p.m.) 560 efs (3.30 ft); Apr. 21 (11 p.m.) 787 cfs (4.02 ft); June 9 (5 a.m.) 420 cfs (2.80 ft). * Discharge measurement made on this day. 30 UMATILLA RIVER BASIN

260. Umatilla River at Yoakum, Opeg.

Location. Lat 45°40'40", long 119 002'00", in SW£ sec. 2, T. 2 N., R. 30 E._ at left bank on downstream side of highway bridge, half a mile northeast of Yoakum, 2 | miles down stream from abandoned Furnish Reservoir, and 11 miles downstream from Birch Creek. Drainage area. 1.280 sq.mi, approximately. Records available. May 1903 to September 1958. Published as "above Furnish Reservoir, near Yoakum" October 1916 to September 1934. Gage. Water-stage recorder. Datum of gage is 768.21 ft above mean sea level, datum of T929, supplementary adjustment of 1947. May 5, 1903, to Sept. 30, 1916, staff gage at site 500 ft upstream at different datum. Oct. 1, 1916, to Sept. 30, 1934, water-stage recorder at site 5 miles upstream at different datum. Oct. 1, 1934, to Oct. 20, 1948, water-stage recorder at present site at datum 2.0 ft higher. Average discharge. 55 years, 678 cfs (490,900 acre-ft per year). Extremes. Maximum discharge during year, 11,700 cfs Apr. 21 (gage height, 10.84 ft); minimum, 15 cfs Sept. 20. 1903-58: Maximum discharge, 20,000 cfs May 30, 1906 (gage height, about 15.0 ft, site and datum then in use, from floodmarks), from rating curve extended above 6,600 cfs; minimum, 12 cfs Aug. 10-12, 1908, Aug. 4, 1910. Remarks. Records good except those for period when recorder was defective, which are fair. Slight regulation by Furnish Reservoir 1910-34 (capacity, 3,900 acre-ft prior to fill ing with silt). Flow regulated to some extent since 1927 by McKay Reservoir (see p. 27). Many small diversions for irrigation above station. Revisions (water years). WSP 794: 1906(M). WSP 1398: 1904-6, 1908-9, 1922-23, 1926, 1936.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In In cubic feet per second) (Shifting-control method used Apr. 21) Oct. 1 to Apr. 21 Apr. 22 to Sept. 30 1.5 54 4.0 1,070 1.1 27 3.0 720 1.7 84 6.0 2,890 1.3 64 4.0 1,400 2.0 147 8.0 5,550 1.5 115 6.0 3,400 2.5 290 11.0 11,200 2.0 285 8.0 6,220 3.0 500 2.5 475 10.0 10,200 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 55"60 98 189 585 1,260 1,140 888 5,350 520 422 35B"462 516 2 98 192 535 1,110 979 55T 5,080 488 414 3T5 3 155"118 98 186 480 979 864 1,110 2,710 422 410 452 510 4 100 180 423 864 780 1,500 2,360 585 410 452 506 5 92 100 IBS 385 810 720 1,500 2,090 *562 406 457 506 6 90 98 209 357 858 675 *1,250 2,190 590 586 457 302 7 94 98 915 329 951 615 1,160 2,540 444 383 452 299 8 102 96 1,370 314 1-.200 585 1,080 2,320 422 *398 448 288 9 100 9T 1,040 300 1,280 540 1,050 2,120 740 422 444 271 10 94 96 816 290 1,290 490 1,190 1,960 414 414 450 268 11 90 98 685 311 1,360 465 1,960 1,930 566 426 426 260 12 90 108 585 525 1,360 441 2,270 2,060 430 426 418 274 13 88 138 495 1,080 1,610 425 2,200 1,750 488 422 418 306 14 86 254 423 1,040 1,580 410 2,560 1,400 480 422 406 510 15 84 518 381 *1,830 1,430 414 2,610 1,250 454 418 576 *510 16 88 297 353 1,490 1,890 425 2,470 1,160 598 418 576 298 17 84 260 *369 1,720 2,440 446 2,540 *1,160 583 418 576 278 18 82 236 414 2,050 3,420 455 4,120 1,150 414 *448 372 *271 19 84 233 465 1,490 5,790 456 5,660 1,170 457 444 358 66 20 84 *239 840 1,150 3,420 *455 5,950 1,150 470 444 548 56_ 21 84 236 1,850 951 *3,150 545 10,100 1,160 462 459 350 56 22 82 221 1,680 798 2,840 675 9,890 1,020 480 450 *550 69 23 82 209 1,180 720 2,810 768 *7,500 948 480 450 327 *66 24 84 200 944 670 2,800 888 5,700 906 516 426 327 69 25 88 194 798 615 2,910 1,000 *5,260 995 506 418 330 74 26 96 192 924 580 2,460 995 5,010 858 484 414 552 64 27 106 206 993 560 1,790 957 4,710 810 470 414 544 62 28 104 215 944 575 1,400 918 4,550 768 466 410 541 60 29 *98 212 894 690 - 918 5,910 680 434 406 541 50 30 98 197 786 1,320 912 5,620 580 426 406 41 31 98 670 1,360 894 540 448 520 Total 2,834 5,241 21,953 25,523 53,062 21,204 99,649 48,125 15,629 12,992 11,963 5,999 Mean 91.4 175 708 823 1,895 684 5,522 1,552 454 419 586 200 Ac-ft 5,620 10,400 43,540 50,620 105,200 42,060 197,700 95,450 27,030 25,770 25,750 11,900 Calendar year 1957: Max 5,700 Min 43 Mean 692 Ac-ft 501,100 Water year 1957-58: Max 10,100 Mln 36 Mean 883 Ao-ft 639,000 Peak discharge (base, 5,600 cfs).--Feb. 19 (9 a.m.) 5,950 cfs (6.89 ft); Apr. 21 (10 a.m.) ll,700cfs (10.84 ft).______* Discharge measurement made on this day. Note. Recorder defective Apr. 18-20. UMATILLA RIVER BASIN 31

315. Butter Creek near Pine City, Oreg. (Called North Pork Butter Creek on some maps)

Location.--Lat 45°32'40", long 119 018'40", In SW£ sec. 22, T. IN., R. 28 E., on right bank half a mile downstream from Mattlock Canyon, 6 miles southeast of settlement of Pine City, and 20 miles south of Hermlston. Drainage area. 291 sq ml. Records available.--April to June 1928, November 1928 to June 1929, October 1929 to Sep- tember 1930, January 1931 to September 1932, February to June 1933, October 1933 to September 1941, January to June 1942, October 1942 to September 1958. Prior to Octo ber 1945 monthly discharge only, published in WSP 1318. Gage.--Water-stage recorder. Altitude of gage is 1,400 ft (by barometer). Prior to Oct. 1, 1944, at datum 1.1 ft higher and Oct. 1, 1944, to Sept. 6, 1949, at datum 1.0 ft higher. Average discharge. 26 years (1929-30, 1931-32, 1933-41, 1942-58), 24.1 cfs (17,450 acre- ft per year). Extremes. Maximum discharge during year, 489 cfs May 23 (gage height, 4.23 ft); no flow Aug. 15. 1928-58: Maximum gage height, 12.4 ft, present datum, Feb. 21, 1949 (discharge not determined); no flow at times. Remarks. Records good. No regulation. A few small diversions for irrigation above station. Water is diverted into headwaters of Butter Creek from Fivemile Creek, a tributary of Camas Creek In John Day River basin, for irrigation of 345 acres below station; at times almost 40 cfs is diverted. R_evisions (water years).--WSP 1218: 1950(M).

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Jan. 29 Jan. 30 to Sept. 30 0.8 0.5 1.5 17 0.7 0 1.1 3.5 2.0 52 .9 1.2 1.7 27 .1 1.3 8.5 2.5 116 1.0 2.4 2.0 52 .9 .5 1.5 16 3.0 210 1.1 4.0 2.5 115 1.0 1.8 1.7 4.0 430 1.3 9.5 3.0 195

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 P^l 4.5 7.1 19 81 128 97 143 55 6.3 0.4 0.2 2 n.o 475 7.4 18 69 106 100 133 37 8.0 .4 3 2.2 4.5 7.1 17 61 97 131 123 40 8.5 .6 .2 4 2.9 4.8 7.1 17 55 84 151 119 55 772 74 .3 5 2.4 4.8 7.4 16 55 82 136 118 28 6.6 .5 *.3 6 2.4 4.8 7.4 15 54 68 *114 156 25 6.3 .4 .3 7 3.0 4.8 9.5 15 ST 66 102 152 25 4.6 .4 .2 8 3.4 4.8 24 14 97 61 97 *T58 22 4.2 .5 .2 9 3.5 4.8 33 14 85 60 87 128 21 4.0 .5 .2 10 3.5 4.8 26 15 85 51 54 118 22 3.7 .4 .2 11 3.5 4.8 22 16 73 52 99 114 20 5.5 .5 .2 12 3.4 5.0 19 17 75 49 96 126 20 2.9 .2 .2 13 3.5 *6.0 18 20 105 45 94 103 21 2.8 .2 .5 14 3.4 6.5 17 19 94 45 110 89 21 2.9 .1 .3 15 3.2 7.7 16 *48 93 46 110 78 18 2.9 0 .3 16 3.4 7.4 15 *104 238 40 108 70 16 2.3 .1 .5 17 3.4 7.1 *18 116 236 4T 115 66 14 *1.5 .2 .6 18 3.4 6.8 20 165 298 45 135 59 15 1.5 .1 .6 19 3.5 7.1 19 104 *258 51 124 57 8.8 1.1 .1 .5 20 3.7 7.4 22 80 226 67 121 53 7.2 .8 .1 .6 21 3.7 7.1 96 61 194 125 182 67 7.2 .6 .2 .9 22 3.7 6.2 W 50 170 142 244 55 7.2 .7 .5 1.1 23 3.7 6.8 51 44 164 114 238 87 6.9 .6 *.5 1.5 24 3.7 6.8 40 41 148 105 246 60 6.5 .5 .2 1.5 25 4.0 6.8 34 37 553 97 264 79 6.3 .5 .1 1.1 26 4.5 6.8 36 34 266 90 238 50 6.1 .4 .1 1.5 27 4TF 6.8 34 33 196 82 264 43 6.1 .4 .1 1.5 28 4.5 6.8 31 33 *154 78 *214 41 6.1 .1 1.6 29 4.5 7.1 29 61 84 184 58 6.1 tf .2 ITS'1.8 30 4.5 6.8 27 192 96 158 35 6.3 . 6 .2 31 4.5 20 103 102 32. .5 .1 Total 105.2 180.9 798.0 1,538 4,050 2,401 4,451 2,708 507.6 87.0 7.2 20.5 Mean 3.39 6.03 25.7 49.6 144 77.5 148 87.4 16.9 2.81 0.25 0.68 Ae-ft 209 359 1,580 3,050 7,990 4,760 8,790 5,370 1,010 173 14 41 Calendar year 1957: Max 172 Mln 0.1 Mean 23.3 Ac-ft 16,840 Water year 1957-58: Max 333 Mln 0 Mean 46.1 Ac-ft 33,350 Peak discharge (base, 200 cfs). Jan. 30 (2:50 a.m.) 290 cfs (5.40 ft); Feb. 18 (10 a.m.) 332 cfs (3.61 ft); Feb. 25 (2 p.m.) 448 cfs (4.07 ft); Apr. 27 (2 a.m.) 514 cfs (5.52 ft); May 23 (6:50 p.m.) 489 efs (4.25 ft).______* Discharge measurement made on this day. 32 UMATILLA RIVER BASIN

Principal diversions from Umatilla River between Yoakum and Umatilla gaging stations, Oreg.

The following canals divert water from Umatilla River between Yoakum and Umatilla: Furnish Canal, from right bank of Umatilla River in SWvSWtr sec. 31, T. 3 N., R. 30 E. Umatilla project feed canal, from right bank of Umatilla River in SWij sec. 22, T. 3 N., R. 29 E., to feed Cold Springs Reservoir of Bureau of Reclamation. Western Land Canal, from left bank of Umatilla River in NE^- sec. 21, T. 3 M., R. 29 E.; gage is 1 mile down stream from intake. Alien Canal, from right bank of Western Land Canal, half a mile downstream from headgate of that canal. Maxwell Canal, from right bank of Umatilla River in SW-f sec. 28, T. 4 N., R. 28 E.,; at times it receives water from Cold Springs Reservoir. West Division main canal, from left bank of Umatilla River in SW^ sec. 28, T. 5 N., R. 28 E. Water diverted by all of these canals is used for irrigation of lands on both sides of Umatilla River near and below Echo, except that diverted by West Division main canal, which is applied to land along Columbia River in vicinity of Irrigon. Several smaller canals also divert water between Yoakum and Umatilla, but no records for them were obtained. Records of monthly discharge of the canals, published as a group, are available from March 1926 to September 1958; records for some of the canals published separately prior to 1926. Revised figures of discharge for Maxwell Canal (water year 1921) and West Division main canal (water year 1923) published in WSP 1398.

versions, in acre-feet, water year October 1957 to September 1958 West Furnish Umatilla Western Alien Maxwell Division Month Canal project Land Canal Canal main feed canal Canal canal

_ _ _ _ _ 0 _ _ 0 _ _ 813 April ...... 234 3,000 7,590 618 672 744 3,340 July...... 0 14,400 906 3,470 12,120

73,890

Note. No gage-height record for months of little or no flow and for a few days and short peri odsls at.. other______times.___ __. Discharge for some periods interpolated or computed on basis of information furnished by watermaste UMATILLA RIVER BASIN 33

335. Umatilla River near Umatilla, Oreg.

Location.--Lat 45°54'20", long 119°19'40", in NW^- sec. 21, T. 5 N., R. 28 E., on left bank 1 5 miles downstream from West Division main canal of Umatilla project, if miles southeast of Umatilla, and 2 miles upstream from mouth. Drainage area. 2,290 sq mi, approximately. Records available . October 1903 to September 1958. Gage.--Water-stage recorder. Datum of gage is 330.47 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Jan. 26, 1931, staff gage at same site and datum. Average discharge.--31 years (1927-58), 449 cfs (325,100 acre-ft per year). Years prior to 1927 not included in computation of average discharge, due to increased diversion since 1927. Extremes.--Maximum discharge during year, 9,200 cfs Apr. 22 (gage height, 7.60 ft); min imum/ 1.7 cfs Oct. 22. 1903-58: Maximum discharge, 19,600 cfs May 31, 1906 (gage height, 11.0 ft), from rating curve extended above 11,000 cfs by logarithmic plotting; no flow at times. Remarks. Records good except those above 6,000 cfs and those for period of no gage-height record, which are fair. Regulation since 1927 by McKay Reservoir (see p. 27). Many diversions above station for irrigation of lands above and below station; Brownell Canal diverts below station. Diversions since 1908 to Cold Springs Reservoir, an off- channel reservoir (capacity, 50,000 acre-ft). Revisions (water years). WSP 794: Drainage area. WSP 1398: 1909, 1911, 1914, 1928, 1935.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, in cubic feet per second) Oct. 1 to Jan. 15 Jan. 16 to Sept. 30

2.1 3.0 290 1.6 3.0 2.4 58 4.0 1,070 2.2 3.5 620 1.7 4.0 2.6 110 5.0 2,810 2.3 35 4.0 1,130 1.8 6.0 3.0 290 6.0 5,110 2.4 52 5.0 2,960 2.0 13 3.5 600 8.0 10,400 2.6 105 2.2 29 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 102 186 195 604 1,210 1,280 910 3,170 26 8.7 1950" 260 2 235 186 186 540 1,070 1,060 971 2,750 15 9.8 260 3 190 181 181 505 950 920 1,050 2,280 10 9.0 53 48 4 186 181 176 442 842 *824 1,420 1,820 8.1 8.7 53 *20 5 163 181 176 394 752 743 1,360 1,520 *6.0 9.0 53 33 6 160 181 172 352 752 698 *1,340 1,330 5.6 9.0 56 27 7 245 *176 217 330 815 632 1,200 1,870 5.4 8.7 56 26 8 340 176 1,360 310 1,020 568 1,020 1,770 5.6 8.4 50 14 9 190 176 1,110 275 1,150 536 890 1,510 35-66 8.4 41 6.0 10 129 172 *880 265 1,150 492 842 1,270 7.8 41 6.3 11 145 168 728 255 1,200 450 1,420 1,260 4.2 7.8 39 4 c. 12 141 T72 612 300 1,260 432 2,100 1,590 87T 7.8 37 773 13 137 181 519 850 1,430 414 2,020 1,360 8-.1 8.7 44 11 14 129 176 456 922 1,600 396 *2,180 960 8.4 ~9.810 43 10 15 121 245 388 1,660 1,420 432 2,440 734 8.4 48 10 16 117 325 364 *1,570 1,740 513 2,260 616 8.1 9.4 40 9.8 17 113 285 340 1,370 2,280 492 2,240 552 8.1 9.4 44 10 18 109 265 *364 2,140 3,130 520 3,260 544 7.8 8.7 41 9.8 19 105 250 394 1,650 4,010 492 3,920 492 7.5 9.0 37 9.0 20 105 230 505 *1 , 200 *3,760 464 3,420 464 7.2 8.7 40 8.7 21 77 230 1,480 930 3,420 568 5,780 444 7.8 9.0 36 8. 22 16 225 1,980 779 3,060 689 *8,450 385 7.5 9.0 *39 8. 23 172 215 1,420 680 3,000 788 7,900 290 6.9 8.4 46 8. 24 195 205 1,060 616 3,000 870 5,900 265 7.2 8.4 48 8. 25 a200 190 850 568 3,110 960 *5,300 325 8.7 8.4 48 8. 26 a200 176 820 520 3,000 993 4,850 300 9.4 8.0 43 8. 27 a200 172 977 513 2,180 900 4,820 176 9.8 3.0 44 B. 28 a200 190 933 492 1,620 833 4,650 154 8.7 57T 40 8. 29 al95 195 890 552 - 860 4,170 120 8.4 7.2 40 8. 30 190 195 *800 900 833 3,600 24 8.4 7 . 8 55 8. 31 186 719 1,240 880 2T 7.8 90 Total 4,983 6,086 21,252 23,724 53,931 21,532 91,683 30,372 341.4 258.9 1,414 873.2 Mean 161 203 686 765 1,926 695 3,056 980 11.4 8.35 45.6 29.1 Ac-ft 9,880 12,070 42,150 47,060 107,000 42,710 181,900 60,240 677 514 2,800 1,730 Calendar year 1957: Max 4,980 Min 5.2 Mean 500 Ac-ft 362,000 Water year 1957-58: Max 8,450 Min 3.0 Mean 703 Ac-ft 508,700 Peak discharge (base, 2,800 :fs). Feb. 19 (5 to 7 p.m.) 4,C =fs (5.57 ft); Apr. 22 (2 9,200 cfs (7.60 ft). * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for stations at Pendleton and Yoakum. 34 WILLOW CREEK BASIN

345. Willow Creek at Heppner, Oreg.

Location. Lat 45 021', long 119»32', in SE£ sec. 35, T. 2 S., R. 26 E., on right bank at Heppner, 100 ft upstream from Court Street bridge, 800 ft southeast of Morrow County courthouse, and a third of a mile downstream from Balm Fork. Drainage area.--87 sq mi, approximately. Records available. May 1951 to September 1958. Gage.--Water-stage recorder and concrete control. Datum of gage is 1,952.73 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Average discharge.--? years, 22.2 cfs (16,070 acre-ft per year). Extremes. Maximum discharge during year, 282 cfs Apr. 21 (gage height, 3.55 ft); no flow Aug. 18-20. 1951-58: Maximum discharge. 812 cfs May 10, 1957 (gage height, 6.15 ft), from rating curve extended above 230 cfs by logarithmic plotting; no flow at times. Maximum discharge known, about 36,000 cfs June 14, 1903, by slope-area method. Remarks. Records good. Many diversions above station for- irrigation of about 500 acres. Part of flow of Ditch Creek (John Day River basin) is diverted to Willow Creek above station.

Rating tables,-water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Backwater from debris May 31 to June 2) Oct. 1 to Dec. 7 Dec. 8 to Sept. 30 0.9 0 1.3 1.0 .4 1.6 1.1 .9 1.9 2.0 1.3 1.0 4.2 2.5 137 1.6 1.1 7.4 3.4 260 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2~3.6 6.3 11 18 35 81 94 128 37 3.7 0.4 0.4 2 6.0 11 22 34 70 104 120 *34 4.0 .4 .4 3 rr 5.7 10 20 31 66 104 116 35 375 .4 *.3 4 11 F7T 9.6 18 29 *59 *98 110 28 2.6 .5 .4 5 9.1 *6.3 976 16 29 53 88 110 25 3.2 TJ .4 6 8.6 7.0 9.6 16 28 48 76 134 24 3.2 .2 .4 7 8.6 7.0 35 14 37 42 69 142 22 1.9 .2 .3 e 8.6 6.6 61 14 39 41 64 T38 21 1.5 .2 .3 9 8.6 6.6 49 15 41 40 58 130 19 1.5 .3 .3 10 7.8 6.6 *37 14 42 35 6T 122 18 1.5 .3 .3 11 .0 6.3 31 14 42 35 63 133 16 1.0 .3 .3 12 .6 7.4 26 17 62 32 62 134 17 .8 .3 .4 13 .3 14 22 18 73 31 62 113 17 .9 .2 .6 14 .2 17 21 26 67 31 73 98 16 .6 .1 .6 15 .8 17 20 102 95 31 74 90 14 .3 .1 .6 .'3 16 .4 16 20 83 224 28 *73 84 13 .1 .6 17 .4 14 21 92 181 3? 75 80 12 *.3 .1 .5 18 .4 15 20 104 175 35 83 77 11 p .2 .4 19 .4 16 20 77 149 41 78 75 8.2 TT .3 .4 20 .4 15 37 62 *145 52 90 72 5.1 .2 .2 .5 21 .O 13 75 50 *127 70 *171 69 4.2 .3 .2 .3 22 .0 14 67 *44 112 77 *248 63 3.0 .3 .2 .3 23 .0 14 48 40 105 73 *225~ 60 2.1 .3 0 .3 24 .6 13 41 37 104 69 204 59 2.3 .3 0 .4 25 .6 12 36 33 150 65 188 57 3.0 .4 0 .3 26 7.0 13 35 31 138 60 175 50 1.7 .3 .2 .3 27 7.0 12 30 28 114 55 164 50 37T .3 .1 .4 28 6.6 12 30 28 95 55 153 47 4.2 .4 .1 .4 29 6.6 9.6 29 34 - 55 142 43 4.8 .4 .2 .6 30 6.6 11 27 43 76 134 40 3.7 .4 .2 ,9 31 6.3 20 40 83 38 .5 .3 Total 258.1 325.1 914.8 1,170 2,499 1,621 3,354 2,782 425.0 35.4 6.6 12.6 Mean 8.33 10.8 29.5 37.7 89.2 52.3 112 89.7 14.2 1.14 0.21 0.42 Ac-ft 512 645 1,810 2,320 4,960 3,220 6,650 5,520 843 70 13 25 Calendar year 1957-. Max 175 Mln 0 Mean 22.2 Ac-ft 16,060 Water year 1957-58: Max 248 Mln 0 Mean 36.7 Ac-ft 26,590 Peak discharge (base, 75 cfs). Dec. 21 (12 m.) 86 cfs (2.08 cfs); Jan. 17 (10:30 p.m.) 118 cfs (2.35 ft); Feb. 16 (4 to 6 a.m.) 242 cfs (3.28 ft); Feb. 25 (11 a.m. to 1 p.m.) 164 cfs (2.71 ft); Mar.r. 21 (11:30: p.m.p.m.) 84 cfscs (2.07. ft);; Apr.pr. 3 (l too 2 a.m.)a.m. 106 cfs (2.25 ft); Apr. 21 (11:30 p.m. 282 cfsnfs (5.55(3-55 ft);ft^! MayMav 11 (9 totn 101O p.m.)n m ^ 1156 Rfi i*faefs (2.65I? KK ft).ftV Discharge measurement made on this day. JOHN DAY RIVER BASIN 35

375. Strawberry Creek above Slide Creek, near Prairie City, Oreg.

Location. Lat 44°20', long 118°39', in SW£ sec. 20, T. 14 S., R. 34 E., on left bank 100 ft upstream from Slide Creek and 8-j miles south of Prairie City. Drainage area. 7.2 sq mi, approximately. Records available. October 1930 to September 1958. Prior to October 1944, published as "above South Fork, near Prairie City." Gage. Water-stage recorder and since Nov. 3, 1948, log control. Datum of gage is T',909.57 ft above mean sea level, datum of 1929. Average discharge. 28 years, 12.9 cfs (9,340 acre-ft per year). Extremes.--Maximum discharge during year, 168 cfs May 24 (gage height, 2.47 ft); minimum, 2.2 cfs many days in January and February (gage height, 1.19 ft). 1930-58: Maximum discharge, 172 cfs June 8, 1948; maximum gage height, 3.23 ft May 24, 1956 (backwater from logs); minimum discharge, 1.0 cfs Mar. 20, 1955. Remarks. Records good except those for periods of shifting control, which are fair, Some natural regulation by Strawberry Lake. No diversion above station. Revisions (water years). WSP 1448: 1932-33.

Rating table, water year 1957-58, except periods of shifting control (gage height, In feet, and discharge, In cubic feet per second) 1.19 2.2 1.4 1.8 1.2 2.4 1.5 2.0 80 1.3 5.4 1.6 2.4 170 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 5.0 4.0 3.8 3.4 2.2 6.2 3.8 8.0 -55102 33 ~"5.510 5.0 2 T7T 375 3.8 3T4 27Z 57S 3.8 575 3 4.4 378 3.8 3.4 2.2 5.4 3.4 12 82 28 9.5 5.0 4 4.0 3.8 3.8 3.2 2.2 5.0 3.4 15 73 26 9.0 5.0 5 4.0 3.8 3.8 3.2 2.2 4.7 3.2 17 72 25 8.5 5.0 6 4.0 3.8 3.8 3.2 2.2 4.7 3.2 20 77 23 8.5 5.0 7 4.0 3.8 4.0 *2.9 2.4 4.4 2.9 20 82 21 8.5 5.0 8 *3.8 3.8 T78 2.6 2.4 4.0 279 20 75 20 8.5 5.0 9 3.8 3.8 3.8 2.6 2.4 4.0 2.9 24 77 19 8.5 5.0 10 3.8 3.8 3.8 2.4 2.4 3.8 2.9 29 77 18 8.5 4.7 11 3.8 3.8 3.8 2.4 2.4 3.8 3.2 40 73 17 8.5 4.7 12 3.8 3.8 3.8 2.4 2.4 3.8 3.4 *39 73 17 *8.0 5.0 13 3.8 4.0 3.8 2.4 2.4 3.8 4.0 36 70 16 7.5 5.0 14 4.0 4.0 3.8 2.4 2.4 3.8 5.4 35 66 16 7.0 5.0 15 4.0 3.8 3.8 2.4 2.6 3.8 6.6 35 63 15 7.0 5.0 16 4.0 3.8 4.0 2.4 3.8 3.8 7.5 36 62 15 6.6 5.0 17 4.0 3.8 4.0 2.4 *4.7 3.8 10 45 63 15 6.6 4.7 18 3.8 *3.8 4.0 2.4 5.0 3.4 13 60 63 15 6.6 4. 19 3.8 3.8 4.0 2.4 5.4 3.4 13 73 62 14 6.2 4. 20 3.8 3.8 4.0 2.4 5.4 3.4 13 102 58 13 6.2 4. 21 3.4 3.8 4.0 2.4 5.4 3.4 15 109 56 13 6.2 4. 22 374 3.8 3.8 2.4 5.8 3.4 T5 96 54 13 6.2 4. 23 3.8 3.8 3.8 2.4 6.6 3.4 13 100 54 13 6.2 4. 24 3.8 3.8 3.8 2.4 8.0 3.4 11 138 56 12 5.8 4. *4.7 25 4.0 3.8 3.8 2.4 II 3.4 10 148 54 12 5.8 26 4.4 3.8 3.8 F72-2.2 10 3.4 9.0 138 51 12 5.4 4.7 27 4.4 3.8 3.8 8.5 *3.4 8.5 129 47 12 5.4 4.7 28 4.4 3.8 3.8 2.2 7.0 3.4 8.0 131 44 11 5.0 4.7 29 4.4 3.8 T74-3.4 2.6 - 3.4 7.0 122 38 10 5.0 4.7 30 4.4 3.8 2.4 3.8 7.5 115 35 To 5.0 4.4 31 4.0 3.4 2.2 3.8 109 10 5.0 Total 124.7 114.6 118.0 80.1 121.6 123.0 215.5 2,011.0 1,949 524 220.2 144.9 Mean 4.02 3.82 3.81 2.58 4.34 3.97 7.18 64.9 65. 0 16.9 7.10 4.83 Cfsm 0.558 0.531 0.529 0.358 0.603 0.551 0.997 9.01 9.03 2.35 0.986 0.671 In. 0.64 0.59 0.61 0.41 0.63 0.64 1.11 10.39 10.07 2.71 1.14 0.75 Ac-ft 247 227 234 159 241 244 427 3,990 3,870 1,040 437 287 Calendar year 1957: Max 14O Mln 1.2 Mean 13.8 Cfsm 1.92 In. 26.04 Ac-ft 10, 000 Water year 1957-58: Max 148 Mln 2.2 Mean 15.7 Cfsm 2.18 In. 29.69 Ac-ft 11.4OO * Discharge measurement made on this day. Note. Shifting-control method used May 5-23, Sept. 14-3O. 36 JOHN DAY RIVEH BASIN

385. John Day River at Prairie City, Oreg. Location. Lat 44°27', long 118°43', in NEtr sec. 10, T. 13 S., R. 33 E., on right bank 600 ft upstream from outlet of Prairie power canal, a third of a mile downstream from Dixie Creek, and three-quarters of a mile southwest of Prairie City. Drainage area. 231 sq mi. Records available. October 1916 to September 1917 (gage heights only), March 1925 to Sep- tember 1958.Monthly discharge only for March 1925, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 3,496.66 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Mar. 30, 1926, staff gage at site 600 ft downstream, just below outlet of Prairie power canal, at different datum. Mar. 30, 1926, to Aug. 23, 1943, staff gages at various sites and daturas just above outlet of Prairie power canal. Average discharge. 28 years (1925-53), 113 cfs, including flow of Prairie power canal (81,810 acre-ft per year). Extremes. Maximum discharge during year, 696 cfs May 11 (gage height, 3.19 ft); minimum, 14 cfs Aug. 17. 1925-58: Maximum discharge, 2,100 cfs Mar. 25, 1952 (gage height, 6.27 ft, from floodmark), from rating curve extended above 450 cfs; minimum, 2 cfs Dec. 8, 21, 22, 1932, Aug. 10, 1934. Remarks. Records excellent. No regulation. Many diversions for irrigation above station. Prairie power canal (not used for power since February 1952) diverts water above station in SE£ sec. 7, T. 13 S., R. 34 E.; water is used for irrigation below former canal gaging station in sec. 11, T. 13 S., R. 33 E., where the following discharge measure ments, in cubic feet per second, were made in the 1958 water year; Nov. 18 ...... aO.25 Feb. 17 ...... 5.88 July 2 ...... 10.4 a Estimated. Revisions (water years). WSP 1448: 1926-27, 1929-32, 1944, 1950.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, in cubic feet per second) Oct. 1 to May 10 May 11 to Sept. 3O 0.9 57 2.0 305 1.5 ISO 1.2 1O6 3.0 66O 2.O 275 1.5 170 .9 40 3.0 620 1.2 85 4.0 1,060 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 163 85 82 88 143 210 168 305 326 125 52 31 2 156 83 83 93 130 195 170 338 323 *140 54 32 3 152 82 78 90 126 178 178 362 296 13O 59 34 4 126 80 78 82 126 165 ISO 393 299 119 58 34 5 116 80 82 82 139 158 165 435 258 104 56 34 6 110 82 82 80 124 149 156 470 250 94 50 37 7 118 83 141 *85 UT 141 165 446 242 100 37 36 8 *108 83 116 85 143 139 225 418 2 SO 96 40 37 9 102 83 101 85 141 141 188 435 £99~409 94 38 36 10 97 83 93 93 170 126 2OO 471 94 30 34 11 95 83 90 95 141 128 208 592 262 91 29 33 12 92 85 85 12O 19O 118 220 *632 262 80 *28 39 13 92 93 86 124 19O 116 240 49O 268 76 29 60 14 99 95 86 108 145 116 278 395 252 80 25 58 15 93 90 86 161 268 118 293 329 232 87 22 53 16 92 85 95 126 4OO 114 299 296 218 76 16 48 17 90 82 99 170 *410 126 332 314 180 75 16 49 18 90 *85 95 139 396 126 386 356 150 119 16 48 19 92 83 97 104 350 126 365 448 142 119 19 49 20 90 80 130 106 335 141 350 490 130 108 17 50 21 88 69 158 102 317 178 418 532 121 102 17 48 22 88 33 124 93 311 168 442 584 119 96 19 58 23 88 82 99 99 311 156 379 6OO TTK 89 21 8O 24 88 82 1O1 101 326 156 341 544 232 87 19 71 25 90 82 101 102 393 156 308 493 188 87 21 *68 26 108 80 102 101 326 154 332 458 165 73 28 71 27 95 77 93 101 281 *147 320 444 155 66 17 80 28 92 80 122 132 238 149 281 423 140 59 20 75 29 88 69 106 316 - 149 275 395 135 56 25 70 30 86 78 93 212 182 284 353 130 54 27 68 31 86 IA 161 165 338 53 28 Total 3.17O 2,467 3,058 3,636 6,711 4,591 8,146 13,579 6,608 2,829 933 1,521 Mean 102 82.2 98.6 117 240 148 272 438 220 91.3 30.1 50.7 Ac-ft 6,290 4,890 6,O70 7,210 13,310 9,110 16,160 26,930 13,110 5,610 1,850 3,02O Calendar year 1957: Max 822 Mln 17 Mean 145 Ac-ft 105,200 Water year 1957-58: Max 632 Mln 16 Mean 157 Ac-ft 113J600 Peak discharge (base, 24O cfs).--Oct. 1 (5 p.m.) 275 cfs (1.90 ft); Jan. 29 (6 p.m.) 604 cfs (2.86 ft); Feb. 17 (5:3O p.m.) 568 cfs (2.77 ft); Apr. 22 (12:30 a.m.) 477 cfs (2.52 ft); May 11 (8 p.m.) 696 cfs (3.19 ft); May 23 (4 a.m.) 652 cfs (3.O8 ft); June 9 (5:3O a.m.) 536 cfs (2.79 ft); June 25 (8:30 p.m.) 284 efs (2.03 ft).______* Discharge measurement made on this day. JOHN DAY RIVER BASIN 37

405. John Day River at Picture Gorge, near Dayville, Oreg.

Location. Lat 44°31'151', long 119°37'30", in SW£ sec. 17, T. 12 S., R. 26 E., on right bank 0.7 mile upstream from Rock Creek and 5? miles northwest of Dayville. Drainage area. 1,680 sq mi, approximately. Records available. April 1926 to September 1958. Monthly discharge only April 1926, published in WSP 1318. Gage. Water-stage recorder. Concrete control since Sept. 1, 1934. Datum of gage is 2",231.84 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Oct. 11, 1926, staff gage and Oct. 11, 1926, to Sept. 30, 1930, water- stage recorder, at same site at datum 0.50 ft higher. Average discharge. 32 years, 466 cfs (337,400 acre-ft per year). Extremes. Maximum discharge during year, 3,770 cfs Feb. 18 (gage height, 10.21 ft); minimum, 29 cfs Sept. 9 (gage height, 0.98 ft). 1926-58: Maximum discharge, 6,800 cfs Mar. 19, 1932 (gage height, 14.0 ft); mini mum, 1 cfs for several days in August and September 1930, Aug. 8, 9, 1936. Remarks. Records excellent below 500 cfs and good above. No regulation. Many diversions for irrigation above station. Revisions (water years).--WSP 1218: 1950. WSP 1348: Drainage area. WSP 1448: 1926, 1928, 1932(M), 1936.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30 2.0 113 6.0 1,300 1.1 36 4.0 550 3.0 290 7.0 1,750 1.5 6.0 1.3OO 4.0 550 2.0 127 8.0 2,300 3.0 305 10.0 3,600 Discharge, to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 121 250 222 278 760 1,580 1,080 1,640 1,180 400 73 44 2 362 244 230 338 673 1,420 1,110 1,740 1,200 438 70 41 3 425 240 228 348 617 1,310 1,110 1,840 1,120 *I32~ 71 40 4 358 234 216 315 '59?589 1,180 1,140 1,940 1,080 398 72 45 5 348 230 2S5 264 1,140 1,120 2,070 980 361 73 42 6 320 230 232 270 592 1,040 1,040 2,400 868 331 76 42 7 *320 230 254 280 624 964 1,080 2,410 844 305 75 42 8 318 232 368 *290 792 956 1,240 2,250 844 305 75 46 9 298 230 320 298 782 904 1,230 2,220 1,320 276 74 42 10 278 226 284 302 964 844 1,300 2,240 1,240 239 72 44 11 266 228 264 335 880 824 1,470 2,590 1,060 219 72 46 12 256 234 254 440 1,200 768 1,580 5,040 1,030 170 71 47 13 256 252 256 680 1,430 758 1,770 *2,666 1,070 144 *73 54 14 268 '255290 260 490 1,050 743 2,130 2,150 992 127 67 67 15 274 256 490 1,410 746 2,280 1,840 872 113 62 78 16 262 272 266 583 3,350 746-694 2,290 1,680 785 108 59 110 17 254 254 298 617 3,100 2,480 1,660 690 93 61 120 18 248 *250 302 892 *5,520 743 2,900 1,710 595 93 62 116 19 246 246 300 571 3,110 740 2,670 1,900 523 142 63 116 20 244 242 352 493 2,900 785 2,540 1,990 472 214 61 113 21 236 208 589 468 2,730 876 2,660 2,040 432 219 60 113 22 236 203 598 410 2,680 1,050 2,810 2,010 392 184 61 110 23 238 218 135 415 2,720 1,010 2,500 2,010 372 158 61 139 24 240 220 395 432 2,820 1,020 2,200 1,900 S25 145 59 *180 25 246 226 388 450 3,330 1,070 1,980 1,760 645 127 56 184 26 282 226 380 445 2,780 1,040 1,880 1,660 559 120 51 177 27 305 218 365 428 2,190 *996 1,820 1,530 502 113 49 175 28 288 218 388 485 1,840 1,010 1,650 1,420 475 106 50 172 29 274 210 480 1,180 - 1,040 1,590 1,320 440 103 49 166 30 262 201 408 1 400 1,110 1,580 1,210 418 90 46 155 31 254 320 924 1,130 Ij_li° 78 44 Total 8,613 7,050 10,131 15,611 50,025 30,237 54,230 59,910 23,520 6,351 1,968 2,861 Mean 278 235 327 504 1,787 975 1,808 1,933 784 205 63.5 95.4 Ac-ft 17,080 13,980 20,090 30,960 99,220 59,970 107,600 118,800 46,650 12,600 3,900 5,670 Calendar year 1957: Max 2,990 Min 38 Mean 605 Ac-ft 437,800 Water year 1957-58: Max 3,520 Min 40 Mean 741 Ac-ft 536,500 Peak discharge (base. 1,300 cfs). Jan. 30 (1:30 a.m.) 1,840 cfs (7.19 ft); Feb. 13 (1:30 a.m.) 1,680 cfs (6.85 ft); Feb. 18 (5 a.m.) 3,77O cfs (10.21 ft); Apr. 18 (5 a.m.) 3,000 cfs (9.15 ft) May 12 (4 a.m.) 5,150 cfs (9.56 ft); June 9 (12 m.) 1,450 cfs (6.57 ft).______Discharge measurement made on this day. 38 JOHN DAY RIVER BASIN

410. Desolation Creek near Dale, Oreg.

Location. Lat 44°59'20", long 118°55'10", in SW£ sec. 6, T. 7 S., R. 32 E., on right bank three-quarters of a mile upstream from mouth and li miles east of Dale. Drainage area. 108 sq mi. Records available. July 1915 to September 1917 (fragmentary gage heights and discharge measurements only), September 1949 to September 1958 (discontinued). Monthly dis charge only September 1949, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 2,906.99 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. July 21, 1915, to Sept. 2, 1917, staff gage at site three-quarters of a mile downstream at different datum. Sept. 14, 1949, to Oct. 12, 1951, water-stage recorder at site 80 ft downstream at datum 1.97 ft lower. Average discharge. 9 years, 101 cfs (73,120 acre-ft per year). Extremes. Maximum discharge during year, 1,240 cfs May 20 (gage height, 5.43 ft), from rating curve extended above 650 cfs by logarithmic plotting; minimum, 4.6 cfs Nov. 4 (gage height, 0.33 ft). 1949-58: Maximum discharge, that of May 20, 1958; minimum, 2.5 cfs Dec. 1, 1954, (result of freezeup). Remarks. Records good except those for periods of ice effect, which are fair. No regulation. Some flow diverted from headwaters into Olive Lake in North Pork John Day River basin, under water right for 25 cfs. Revisions. WSP 1348: Drainage area.

Rating tables, water year 1957-58, except periods of ice effect (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 24 Feb. 25 to Sept. 30 7.4 2.0 75 8.0 2.5 145 11 2.5 135 14 3.0 240 1.1 3.0 220 1.2 24 3.5 360 1.5 3.5 350 1.5 4.0 530 2.0 5.0 990 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept'.

1 23 18 b!5 b20 48 156 ISO"94 288 390 98 20 10 2 59 bl4 19 b24 44 13? 315 352 *126 T? 9.9 3 37 b9 15 b20 41 129 101 348 325 TOT 20 9.7 4 26 b8.5 14 21 39 115 98 399 308 93 20 9.7 5 20 bl<5 IS 23 39 111 98 490 305 84 18 9.4

6 18 bll 16 b!9 3644- 97 97 630 310 77 17 9.2 7 21 b!2 29 b2C 82 94 602 282 105 16 8.9 8 20 b!2 38 b22 48 91 97 614 280 80 16 8.8 9 *19 b!3 b22 b24 54 84 94 662 414 69 16 8.6 10 18 16 b20 *28 59 70 116 775 33Z 63 15 8.6 11 18 16 b!9 26 49 77 122 955 308 58 15 8.4 12 17 17 b!8 27 68 61 130 '55TJ 340 53 14 TT 13 17 41 b22 26 77 69 156 646 320 48 13 14 14 23 35 b26 23 61 68 232 562 290 46 13 16 15 22 25 29 32 78 66 238 *550 268 42 13 15 16 18 b!4 28 31 214 58 282 598 250 39 13 14 17 17 b!2 35 b34 228 55 423 666 236 37 13 12 18 16 b!5 28 b32 269 62 522 765 218 52 14 11 19 15 b!5 27 29 230 61 424 850 200 53 14 11 20 15 *b9 81 34 241 68 462 870 194 43 *13 12

21 14 b8.5 ~59103 32 *224 95 582 890 170 36 13 12 22 15 b!3 27 216 109 3T5 815 150 33 12 *11 23 20 b!2 41 28 237 105 430 805 150 31 12 12 24 18 b!4 41 28 252 104 384 715 230 29 12 12 25 19 b!5 37 28 540 103 342 658 186 28 11 12 26 46 b!3 37 26 275 98 330 586 151 26 TO-10 11 27 32 bll 32 26 228 95 300 562 134 25 11 28 25 b!4 32 35 190 *98 278 498 121 24 10 10 29 22 b!3 30 79 - 94 268 444 110 24 11 9.9 30 20 b!4 26 7S 103 268 399 105 22 11 9 5 31 19 16 58 94 408 Si 11 Total 709 451.0 971 958 3,929 2,828 7,680 19,185 7,429 1,672 435 327.0 Mean 22.9 15.0 31.3 30.9 140 91.2 256 619 248 53.9 14.0 10.9 Ac-ft 1,410 895 1,930 1,900 7,790 5,610 15,230 38,050 14,740 3,320 863 649 Calendar year 1957: Max 702 Mln 7.2 Mean 105 Ac-ft 76,330 Water year 1957-58: Max 955 Mln 8.4 Mean 128 Ac-ft 92,390 Peak discharge (base, 200 cfs). Feb. 17 (10:30 p.m.) 302 efs (3.34 ft); Feb. 25 (3 a.m.) 366 efs (3.52 ft); Apr. 17 (10:30 p.m.) 598 cfs (4.17 ft); Apr. 21 (1 a.m.) 626 cfs (4.24 ft)j May 11 (11:30 a.m.) 1,020 cfs (5.07 ft); May 20 (9:30 p.m.) 1,240 efs (5.43 ft); June 9 (2 a.m.) 486 efs (3.89 ft); June 24 (12:30 a.m.) 308 cfs (3.29 ft). * Discharge measurement made on this day. b Stage-discharge relation affected by ice. JOHN DAY RIVER BASIN 39

415. North Fork John Day River near Dale, Oreg.

Location. Lat 44°59'55", long 118°56'25", in SE^SE-J- see. 35, T. 6 S., R. 31 E., on right bank a quarter of a mile downstream from Desolation Creek and three-quarters of a mile northeast of Dale. Drainage area. 525 sq mi. Records available. October 1929 to September 1958 (discontinued). Gage. Water-stage recorder. Datum of gage is 2,775.63 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Average discharge. 29 years, 404 efs (292,500 aere-ft per year). Extremes.--Maximum discharge during year, 5,250 efs May 11 (gage height, 8.62 ft, from floodmark); minimum, 43 efs Nov. 4 (gage height, 2.16 ft). 1929-58: Maximum discharge, 8,170 efs May 26, 1948 (gage height, 10.48 ft); mini mum, 6 efs Nov. 3, 1936 (gage height, 1.40 ft). Remarks. Records good except those for periods of ice effect or no gage-height record, which are fair. Flow regulated by Olive Lake (capacity, about 5,500 acre-ft) and Upper Reservoir on Lake Creek (capacity, about 700 aere-ft). Some diurnal fluctua tion at low flow caused by logging operations above station. Several small diver sions for irrigation and mining above station. Since 1865 water has been diverted above station at times to North Fork Burnt River. Revisions (water years). WSP 1318: 1930, 1932.

Rating tables, water year 1957-58, except periods of ice effect (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 24 Feb. 25 to Sept. 30 2.2 49 3.5 440 2.2 45 5.0 1,210 2.4 83 4.0 670 2.5 95 6.0 2,030 2.7 155 5.0 1,310 3.0 220 7.0 3,090 3.0 250 3.5 380 9.0 5,820 4.0 600 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar, Apr. May June July Aug. Sept. 1 101 100 b!30 190 207 555 364 1.250 1,910 480 130 66 2 243 96 b!20 220 195 19? 372 1,530 1,710 *550 128 62 3 271 74 bllO 180 191 472 376 1,890 1,570 5750 132 64 4 1ST 59 bT20 140 191 420 356 2,270 1,450 448 139 68 5 123 b65 b!20 130 191 412 344 2,780 1,360 400 T55 68 6 116 b70 b!30 ISO-120 182 356 334 3,330 1,350 372 118 64 7 123 b75 b!60 207 310 331 3,090 1,270 444 112 62 8 128 b80 b210 140 214 340 320 3,090 1,200 376 108 59 9 116 85 b!90 150 230 319 348 3,620 2.460 334 110 62 10 106 87 180 *b!60 240 262 440 4,030 1,810 313 108 68 11 102 94 170 b!50 217 295 535 5.220 1,490 295 110 58 12 98 100 160 b!60 257 253 645 4,7OO 1,620 277 106 5? 13 96 158 170 b!40 285 262 826 3,450 1,690 259 95 89 14 111 220 b!50 243 262 1,130 2,840 1,470 250 91 110 15 121 I5ZiSS 260 b!70 288 253 1,210 *2,740 1,330 241 89 116 16 104 114 260 bl80 525 220 1,330 3,030 1,220 229 86 108 17 94 76 300 b!90 610 m 1,690 3,520 1,130 217 89 91 18 87 96 280 185 720 232 2,170 4,110 1,020 256 89 82 19 85 blOO 260 133 750 220 1,900 4,720 940 262 91 80 20 85 *96 360 b!50 *792 238 1,920 4,770 898 241 87 82 21 78 54 650 b!40 804 274 2,460 4,830 856 214 82 78 22 SI IS 350 b!30 822 304 S.S76 4,510 748 197 78 *74 23 100 b95 400 b!30 888 319 1,850 4,440 690 186 76 89 24 102 bllO 380 136 974 337 1,580 3,840 958 178 73 99 25 102 b!20 360 139 1.180 356 1,380 3,550 838 167 69 91 26 185 blOO 380 133 1,020 348 1,310 3,190 700 164 69 87 27 185 b90 320 133 808 334 1,180 2,980 625 156 68 84 28 136 b85 340 155 660 *348 1,080 2,590 580 152 55 76 29 121 b80 260 247 - 352 1,050 2,300 530 152 69 73 30 114 blOO 220 254 380 1,090 1,980 500 146 71 73 31 106 160 224 372 1, 980 137 69 Total 3,781 2,872 7,880 4,989 13,891 10,141 32,211 102,170 35,923 8,593 2,935 2,345 Mean 122 95.7 254 161 496 327 1,074 3,296 1,197 277 94.7 78.2 Aoft 7,500 5,700 15,630 9,900 27,550 20,110 63,890 202,700 71,250 17,040 5,820 4,650 Calendar year 1957s Max 3,400 Min 43 Mean 517 Ac-ft 375,700 Water year 1957-58: Max 5,220 Min 54 Mean 623 Ac-ft 451,700

Peak discharge (base. 1,200 efs). Feb. 25 (4 to 6 p.m.).) 1,220 efs (5.02(5.0 ft); Apr. 21 (8 to 10 p.m.) 2,550 efs (6.53 ft); May 11 (about 12 m.) 5,250 cfs (8.62 ft); May 21 (about 1 p.m.) 5,210 efs (8.59 ft); June 9 (3:30 p.m.) 3,260 efs (7.14 ft). * Discharge measurement made on this day. b Stage-discharge relation affected by ice. Note. No gage-height record Dec. 10 to Jan. 9; discharge estimated on basis of weather records, recorded range in stage, and records for nearby streams. 40 JOHN DAY RIVER BASIN

420. Camas Creek near Lehman, Oreg.

Location. Lat 45°10 I , long 118"44', in SW^ sec. 33, T. 4 S., R. 33 E., on left bank 2 miles downstream from Bowman Creek and 3? miles northwest of Lehman. Drainage area. 61 sq mi, approximately. Records available. October 1950 to September 1958. Gage. Water-stage recorder. Datum of gage is 3,969.53 ft above mean sea level (levels ¥y Oregon State Highway Department). Average discharge.--8 years, 51.3 cfs (37,140 acre-ft per year). Extremes. Maximum discharge during year, 778 cfs Feb. 25 (gage height, 3.03 ft); mini mum, 1.3 cfs Aug. 26, 27. 1950-58: Maximum discharge, 1,880 cfs Dec. 21, 1955 (gage height, 4.56 ft), from rating curve extended above 900 cfs by logarithmic plotting; minimum, 0.4 cfs Sept. 1, 2, 5-8, 1955. Remarks.--Records good except those for periods of ice effect; which are fair. A few small diversions for irrigation above station.

Rating tables, water year 1957-58, except periods of Ice effect (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 14 Feb. 15 to Sept. 30 2.9 1.0 37 0.1 .7 1.2 65 4.8 1.3 87 .2 .6 1.5 122 10 1.5 131 .0 2.0 260 20 .5 2.5 470 3.0 760

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 4.2 5.3 10 b30 66 134 T22~114 186 26 7.2 2.8 1.7 2 7TQ-8.5 5.0 9.8 b34 60 IT2 178 30 *30 2.8 1.7 3 b4.2 b9.2 30 56 99 *124 175 2B"32 2T 2.8 1.7 4 4.8 b4.0 b9.0 b24 53 84 120 173 16 3.0 1.7 5 4.2 b4.2 8 .2 b!8 51 77 118 170 22 14 276 2.1 6 4.0 b4.4 10 b!6 50 b60 118 ITS'192 20 13 2.2 T78-1.6 7 5.0 b4.6 b!2 b!6 34 b50 122 18 17 2.4 8 5.0 b4.0 bll b!7 65 b44 140 155 16 13 2.4 1.7 9 *4.6 b4.0 b9.0 18 68 b36 148 143 23 12 2.4 1.7 10 4.4 4.8 b9.0 *18 74 b40 203 136 18 11 2.2 1.7 11 4.2 4.8 b9.0 16 70 46 244 160 18 9.4 2.6 1.6 12 4.0 6.0 b9.0 16 70 b36 257 155 20 8.8 2.0 1.8 13 4.0 13 bio 16 70 b30 284 122 21 7.8 1.8 370"3.3 14 4.2 14 b!2 bl5 63 34 388 105 18 8.1 1.8 15 4.0 13 15 71 79 30 311 93 16 6.8 1.8 3.0 16 3.8 11 18 b20 250 b24 359 *86 15 6.5 1.8 2.7 17 3.6 10 28 24 315 27 425 80 14 6.2 2.1 2.4 *2.6 18 3.4375- 11 26 b22 430 26 4O6 75 13 6.2 2.4 19 11 b20 b!9 393 b24 355 70 12 5.6 2.0 2.4 20 3.4 b8. 5 72 b22 *420 32 425 74 11 5.2 2.0 2.6 21 3.4 *b3.2 ~W129 26 375 46 46.0 74 10 5.2 1.8 2.4 22 3.6 b670" 25 347 59 3~8T> 58 9.4 4.1 1.7 2.4 23 4.0 b8.0 87 25 520 74 299 52 9.1 4.1 1.7 Z.I 24 3.8 b8.0 61 24 550 88 270 44 11 3.9 1.6 2.4 25 4.2 9.8 54 24 556 95 260 41 12 3.9 2.0 2.1 26 7.3 blO 56 23 307 92 270 34 9.8 3.7 1.4 *2.2 27 6.3 b9.4 51 23 212 92 270 35 8.8 3.5 T7£ 2.1 28 6.0 11 47 25 162 101 253 32 8.1 3.7 1.5 2.1 29 5.8 b9.0 43 50 - 215 25 7.5 3.2 1.8 2.0 107 A -, 30 5.6 10 35 89 120 197 22 o . J. 370"3.0 2.2 2.0 31 5.3 b26 TZ 114 24 2.0 Total 145.2 231.2 992.2 820 5,786 2,033 7,657 3,142 482.8 266.3 65.2 64.8 Mean 4.68 7.71 32.0 26.5 207 65.6 255 101 16.1 8.59 2.10 2.16 Ac-ft 288 459 1,970 1,630 11,480 4,030 15,190 6,230 958 528 129 129 Calendar year 1957: Max 700 Mln 1.0 Mean 56.1 Ac-ft 40,650 Water year 1957-58: Max 556 Mln 1.4 Mean 59.4 Ac-ft 43,020 Peak discharge (base, 250 cfs).--Feb. 18 (7 p.m.) 532 cfs (2.62 ft): Feb. 25 (3:30 a.m.) 778 cfs (3.03 ft); Apr. 14 (4:30 a.m.) 465 cfs (2.49 ft); Apr. 17 (8 p.m.) 556 cfs (2.66 ft); Apr. 20 (7 p.m.) 628 efs (2.78 ft).______* Discharge measurement made on this day. b Stage-discharge relation affected by ice. JOHN DAY RIVER BASIN 41

425. Camas Creek near Ukiah, Oreg.

Location. Lat 45°09', long 118°49' , In SE^- sec. 3, T. 5 S., R. 32 E., on right bank 1.2 miles upstream from Cable Creek and 6 miles east of Uklah. Drainage area. 121 sq ml. Records available.--May 1914 to September 1917, November 1919 to July 1920, November 1920 to June 1924, March 1932 to June 1940 (fragmentary), November 1940 to September 1958. Monthly discharge only for some periods, published In WSP 1318. Published as "above Cable Creek, near Uklah" 1914-17, 1919-24. Gage.--Water-stage recorder. Datum of gage Is 3,588.61 ft above mean sea level (levels Dy Oregon State Highway Department). May 1, 1914, to June 30, 1924, staff gage and Mar. 1, 1932, to July 2, 1940, water-stage recorder at site 1,2 miles downstream at different datum. Average discharge.--22 years (1914-17, 1921-23, 1941-58), 105 cfs (76,020 acre-ft per year). Extremes.--Maximum discharge during year, 1,090 cfs Feb. 25 (gage height, 3.99 ft); minimum, 3.9 cfs Aug. 27, 28 (gage height, 1.38 ft). 1914-17, 1919-24, 1932-58: Maximum discharge, 2,600 cfs Mar. 18, 1932 (gage height, 5.20 ft, from floodmark), from rating curve extended above 740 cfs; minimum recorded, 1 cfs Aug. 9, 1932, June 25 to July 2, 1940. Remarks. Records good except those for periods of ice effect, which are fair. Dlver- sions for irrigation of 80 acres above station. Revisions (water years). WSP 1448: 1916, 1920, 1922(M), 1924.

Rating tables, water year 1957-58, except periods of ioe effect (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 14 Feb. 15 to Sept. 30 1.4 6.1 2.0 61 2.0 2.0 1.5 10 2.3 125 4.5 2.3 125 1.6 2.6 230 9.0 2.7 260 1.8 3.0 440 3.1 440 3.8 910

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 14 14 40 70 120 268 206 400 93 20 9.0 5.2 2 27 13 38 80 112 ¥54 2T6 410 26. *83 BT4 5.2 3 22 12 36 65 105 199 *228 420 93 W 8.4 4.8 4 14 11 31 55 100 173 224 430 82 46 8.4 4.8 5 12 11 27. 44 105 161 220 445 73 40 7.9 5.2 6 11 12 49 38 96 133 213 502 64 37 6.9 4.8 7 14 12 55 40 125 114 213 475 58 48 6.4 4.5 8 14 12 50 42 134 100 248 430 54 39 6.4 T7S 9 *12 12 42 44 137 80 256 425 69 32 6.9 4.8 10 12 12 42 *46 146 85 336 425 56 31 6.4 4.8 11 11 12 42 40 131 96 395 485 51 27 6.4 4.8 12 10 14 42 38 137 74 425 465 57 25 6.0 5.6 13 10 27 50 38 140 65 480 358 64 23 5.6 9.0 14 11 38 60 36 118 74 666 292 54 22 5.2 IQ-10 15 10 33 85 4T 175 69 562 260 50 20 5.2 16 10 30 100 55 470 58 631 *256 46 19 5.6 9.0 17 9.5 28 150 55 556 64 729 276 43 19 6.0 7.9 18 9.0 27 140 50 743 64 774 292 39 19 *6.9 6.9 19 9.0 26 85 46 680 56 659 309 35 18 6.4 7.9 20 9.0 16 249 55 *694 73 743 309 33 17 5.6 7.4

21 8.5 *1020" 290 60 638 96 862 304 30 16 5.2 6.4 22 ¥7J T75 60 568 118 TS§ 256 28 14 5.2 6.9 23 9.5 32 137 55 790 143 580 228 26 14 5.2 7.4 24 10 36 112 55 846 170 508 199 34 13 4.8 7.9 25 11 35 102 52 894 179 480 188 35 12 5.2 6.9 26 21 34 108 49 556 179 496 164 29 12 4.8 *6.4 27 19 35 96 44 410 176 480 155 25 12 -T24.2 6.0 28 17 36 92 49 327 188 455 143 23 11 6.0 29 15 32 83 152 - 196 405 112 21 11 5.2 5.6 30 15 40 77 172 213 395 "5T93 2T 10 6.0 5.6 31 14 65 TU 210 yo 9.0 5.6 Total 399.5 682 2,751 1,874 10,053 4,098 13,814 9,599 1,482 779.0 189.6 192.5 Mean 12.9 22.7 88.7 60.5 359 132 460 310 49.4 25.1 6.12 6.42 Ac-ft 792 1,350 5,460 3,720 19,940 8,130 27 , 400 19,040 2,940 1,550 376 382 Calendar year 1957: Max 1,070 Min 2.8 Mean 109 Ac-ft 79,020 Water year 1957-58: Max 894 Min 4.2 Mean 128 Ac-ft 91,080

Peak discharge (base, 550 cfs). Feb. 18 (7 to 8 p.m.) 830 cfs (3.70 ft); Feb. 25 (6 a.m.) 1,090 cfs (3.99 ft); Apr. 17 (9:30 p.m.) 946 efs (5.84 ft); Apr. 20 (8:30 p.m.) 1,060 efs (3.96 ft).______* Discharge measurement made on this day. Note. Stage-discharge relation affected by Ice Nov. 2-6, 9, 16, 17, 20-23, Nov. 26 to Dec. 1, Dec. 3, 4, 7-14, 16, 17, Dec. 31 to Jan. 24, Mar. 8, 9, 13, 16, 19 (no gage-height record Jan. 4-9).

534540 O -60 -4 42 JOHN DAY RIVER BASIN

440. Middle Pork John Day River at Ritter, Oreg.

Location. Lat 44°53'20", long 119°08'25", In SW£NW£ sec. 8, T. 8 S., R. 30 E. , on left bank a quarter of a mile south of Ritter and three-quarters of a mile downstream from Twelvemile Creek. Drainage area. 515 sq mi. Records available. October 1929 to September 1958. Gage. Water-stage recorder. Datum of gage is 2,544.56 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Average discharge. 29 years, 242 cfs (175,200 acre-ft per year). Extremes.--Maximum discharge during year, 1,960 cfs May 12 (gage height, 5.88 ft); mini mum, 14 cfs Nov. 30 (gage height, 1.78 ft), result of freezeup. 1929-58: Maximum discharge, 4,000 cfs Mar. 19, 1932 (gage height, 7.78 ft), from rating curve extended above 2,200 cfs; maximum gage height, 8.50 ft Feb. 18, 1949 (ice Jam); minimum discharge, 1.0 cfs Dec. 10, 1932. Remarks. Records excellent. No regulation. Many small diversions for irrigation of 2,700 acres above station. Revisions (water years). WSP 739: 1931. WSP 1218: 1950. WSP 1448: 1930-32, 1937, drainage area.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) (Stage-discharge relation affected by ice Nov. 24, Dec. 2, 3, 15, Jan. 19) Oct. 1 to Dec. 7 Dec. 8 to Sept. 30 2.1 34 1.9 3.5 295 2.5 2.2 43 4.0 480 3.0 175 2.5 76 4.5 780 3.5 310 3.0 163 6.0 2,100 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 51 64 80 12"0"74 289 604 560 924 688 202 49 30 2 IT?1 61 70 256 540 598 1,010 646 222 47 27 3 188 55 65 130 238 480 646 1,100 570 *^TET 53 26 4 97 49 58 117 230 428 610 1,160 540 190 58 26 5 7& 53 57 95 7H 416 550 1,240 515 170 BT: 26 6 73 58 76 80 244 372 510 1,390 490 155 47 26 7 *84 56 273 86 286 326 515 1,320 448 172 43 32 8 83 64 283 93 316 340 586 1,270 424 145 43 33 9 67 60 178 *115 323 320 622 1,310 64"6777 134 43 28 10 63 60 135 117 393 271 764 1,380 124 44 28 11 61 60 115 124 354 283 972 1,660 565 117 43 28 12 61 62 103 141 416 244 988 1,790 580 111 41 28 13 62 90 92 143 476 244 1,080 1,430 586 103 37 38 14 80 148 92 124 358 244 1,240 1,200 530 100 *32 49 15 78 TIS 95 139 563 247 1,270 1,100 468 95 32 58

16 65 92 120 145 964 TT4"4~215 1,230 1,100 424 89 32 52 17 61 72 145 248 1,050 1,290 1,120 382 86 34 45 18 58 80 137 238 1,300 247 1,490 1,260 344 95 38 42 19 57 90 135 140 1,200 262 1,360 1,400 312 120 39 40 20 56 *78 266 157 *1,190 289 1,310 1,470 319 110 39 42 21 56 48 400 151 1,130 382 1,520 1,560 326 93 34 41 22 56 52 139 1,100 500 1,700 1,440 268 84 32 23 58 86 190 137 1,140 535 1,470 1,400 241 77 32 47 24 61 70 174 135 1,210 575 1,340 1,290 344 72 29 52 25 67 77 190 141 1.620 592 1,220 1,220 362 70 28 46 26 140 90 185 141 1,230 545 1,140 1,120 292 64 28 44 27 116 69 159 143 932 505 1,090 1,050 253 60 T?4~24 43 28 88 65 163 198 732 *535 972 924 230 60 43 29 76 53 153 457 - 555 908 820 218 57 25 41 30 70 36 147 396 634 884 724 210 52 28 40 31 67 98 330 50 29 Total 2,448 2,116 4,732 4,994 19,784 12,578 30,435 37,890 12,998 3,497 1,158 1,142 Mean 79.0 70.5 153 161 707 406 1,014 1,222 433 113 37.4 38.1 Ac-ft 4,860 4,200 9,390 9,910 39,240 24,950 60,370 75,150 25,780 6,940 2,300 2,270 Calendar year 1957: Max 1,840 Min 21 Mean 300 Ac-ft 217,400 Water year 1957-58: Max 1,790 Min 24 Mean 366 Ac-ft 265,400 Peak discharge (base, 760 cfs). Jan. 29 (7:30 p.m.) 868 cfs (4.61 ft); Feb. 18 (12:30 a.m.) 1,480 cfs (5.38 ft)j Feb. 25 (11:30 a.m.) 1,840 cfs (5.76 ft); Apr. 22 (6:30 a.m.) 1.740 cfs (5.66 ft); May 12 (12:30 a.m.) 1,960 cfs (5.88 ft); May 21 (1:30 a.m.) 1,750 cfs (5.67 ft); June 9 (9 a.m.) 924 cfs (4.68 ft).______* Discharge measurement made on this day. JOHN DAY RIVER BASIN 43

445. Fox Creek at gorge, near Pox, Oreg. (The lower part of this stream is named Cottonwood Creek)

Location. Lat 44°37'30", long 119"15<10", in SW£ see. 8, T. 11 S., R. 29 E. , on left bank half a mile upstream from head of gorge and 6 miles southwest of Pox. Drainage area. 90.2 sq mi. Records available. October 1930 to September 1958 (discontinued). Gage. Water-stage recorder. Altitude of gage is 4,240 ft (from topographic map). Prior to June 12, 1952, at site half a mile downstream at different datum. Average discharge. 28 years, 25.9 efs (18,750 aere-ft per year). Extremes. Maximum discharge during year, 585 cfs Jan. 29 (gage height, 4.85 ft); no flow for part of Oct. 1 and all of Aug. 18. 1930-58: Maximum discharge, 1,860 cfs Mar. 25, 1952 (gage height, 5.85 ft, former site and datum), from rating curve extended above 200 cfs on basis of slope-area meas urement of peak flow; no flow at times each year. Remarks. Records good except those for periods of ice effect, which are fair. No regula tion. Diversions for irrigation of 4,800 acres above station. Revisions (water years). WSP 1348: Drainage area at former site. WSP 1398: 1953(M). WSP 1448: 1932, 1938(M), 1939, 1940(M), 1947(M).

Hating tables, water year 1957-58, except periods of ice effect (gage height, in feet, and discharge, in cubic feet per second) (Shifting-control method used Feb. 1-6, Mar. 4-2O, 24, 25, 27-29, Mar. 31 to Apr. 1, May 22 to Sept. 30) Oct. 1 to Jan. 28 Jan. 29 to Sept. 3O

1.4 0.9 2.0 50 .5 1.7 1.0 .4 2.5 93 1.9 2.0 1.1 2.5 3.0 148 4.3 2.5 102 1.2 6.5 3.5 230 7.5 3.0 170 1.4 14 4.0 350 1.7 30 Discharge, In cubic feet per second, water year October 1957 to September 1958. Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 0.4 2.1 3.8 5.2 55 83 69 96 33 8.1 1.2 1.2 2 T3 2.1 3.2 6.4 47 76 80 102 37 13 1.2 1.0 3 3.5 2.1 l^ 6.4 48 71 93 110 32 *13 1.5 1.5 4 3.2 1.9 2T5 4.9 66 61 106 118 30 11 I'.Z T75"1.8 5 2.5 1.9 3.0 b4.0 87 60 118 130 24 9.3 6 2.3 2.1 3.5 b3.6 71 51 117 167 20 8.5 1.2 1.8 7 3.0 2.1 19 b3.2 90 41 95 190 17 10 1.0 1.5 8 *3.0 2.3 13 b3.0 108 45 98 173 17 8.9 .8 1.5 9 3.0 2.3 7.5 *b2.8 95 49 77 160 39 7.3 .8 1.2 10 2.8 2.5 5.8 b¥75 97 43 79 151 40 6.1 .8 1.0 11 2.5 2.5 5.2 b4.0 82 46 80 192 32 5.3 1.2 .8 12 1.9 3.0 4.3 b4.6 114 40 74 290 33 4.9 1.2 ITS 13 2.1 4.6 4.9 b6.0 174 36 77 197 34 4.1 1.0 .8 14 3.0 5.2 4.3 7.5 80 39 97 *140 34 4.1 *.8 .8 15 3.5 T75 5.5 11 116 40 104 121 29 3.7 .5 1.2 16 3.0 3.8 8.4 12 335 35 110 106 20 3.3 .1 1.2 17 2.8 3.2 9.3 62 257 49 122 95 16 2.9 .1 1.5 16 2.8 3.8 7.5 154 270 58 148 90 14 3.7 a 1.2 19 2.8 *4.3 7.5 112 *184 57 143 85 13 3.7 .1 1.2 20 2.8 b2.6 21 72 167 64 137 79 12 3.3 .3 1.2 21 2.8 b2.2 50 38 142 99 170 79 11 3.3 .4 1.2 22 2.8 b2.6 39 17 132 112 214 70 9.3 2.9 .3 1.2 23 3.0 b2.8 18 23 134 77 178 74 9.3 2.5 .4 1.2 24 2.8 b3.O 18 21 147 63 151 58 14 2.2 .4 1.0 25 3.5 b3.0 15 22 214 70 138 46 16 2.5 .4 1.2 26 4.9 3.0 13 24 148 73 135 39 13 2.2 .4 1.2 27 4T3 b2.2 7.5 22 114 63 131 35 12 2.2 .4 1.2 28 4.0 2.5 11 60 98 61 112 31 10 2.2 .5 1.2 29 3.5 1.9 8.4 312!"§'£ - *68 101 26 8.9 1.8 .8 1.2 30 3 2 2 5 7.1 74 96 25"22 8 5 1.2 1.0 31 s!o 4.6 94 66 JU5 1.2 Total 92.3 85.0 333.1 1,313.0 3,652 1,875 3,450 3,297 638.0 159.3 22.9 36.5 Mean 2.98 2.83 10.7 42.4 130 60.5 115 106 21.3 5.14 0.74 1.22 Ac-ft 183 169 661 2,600 7,240 3,720 6,840 6,540 1,270 316 45 72 Calendar year 1957: Max 83O Mln 0 Mean 39.5 Ac-ft 28.61O Water year 1957-58: Max 335 Mln 0 Mean 41.0 Ac-ft 29,660 ak discharge (base, 150 cfs). Jan. 18 (6:30 p.m.) 188 cfs (3.12 ft)j Jan. 29 (4:30 p.m.) 585 cfs (4.85 ft); Feb. 13 (4 a.m.) 261 cfs (3.64 ft); Feb. 16 (1 p.m.) 405 cfs (4.22 ft); Feb. 25 (5 to 6 a.m.) 230 cfs (3.5O ft); Apr. 4 (8 p.m.) 156 cfs (3.06 ft); Apr. 22 (3 a.m.) 226 cfs (3.48 ft); May 12 (1 to 2 p.m.) 5O5 cfs (5.82 ft). ______* Discharge measurement made on this day. b Stage-discharge relation affected by Ice. 44 JOHN DAY RIVER BASIN

460.Morth Pork John Day River at Monument, Oreg.

Location. Lat 44°48'50", long 119°25'50", in SE£ sec. 2, T. 93., R. 27 E., on right bank just downstream from entrance to canyon, 0.7 mile downstream from Cottonwood Creek and three-quarters of a mile west of Monument. Drainage area. 2,520 sq mi, approximately. Records available.--March 1925 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,959.64 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Nov. 24, 1925, staff gage and Nov. 24, 1925, to Oct. 16, 1928, water-stage recorder, at datum 1.10 ft higher and Oct. 17, 1928, to Sept. 30, 1930, at datum 1.00 ft higher. Average discharge. 33 years, 1,216 cfs 3,300 acre-ft per year). Extremes.--Maximum discharge during year, 12,000 cfs May 12 {gage height, 10.85 ft); mini mum, 110 cfs Sept. 12 (gage height, 3.14 ft). 1925-58: Maximum discharge, 22,000 cfs Mar. 18, 1932 (gage height, 14.8 ft), from rating curve extended above 12,000 cfs by logarithmic plotting; minimum, 6 cfs sometime during period Nov. 2-13, 1936. Remarks. Records excellent. Very slight regulation by small reservoirs upstream. Many small diversions for irrigation above station. Revisions (water years).--WSF 754: 1932(M). WSP 1448: 1927, 1929, 1931(M), 1949.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) (Stage-discharge relation affected by ice Jan. 7-10)

3.1 100 5.0 1,400 3.4 190 6.0 2,760 3.8 380 8.0 6,320 4.5 890 11.0 12,300 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 4"55155 280 275 563 2,180 5.580 2,660 4,570 5.480 856 186 120 2 266 380 744 1,920 5,070 2,870 4,950 3,160 899 T80 118 3 712 257 342 792 1,730 2,810 2,950 5,460 2,890 *1.080 180 118 4 563 218 257 712 1.610 2,590 5,020 5,980 2,600 881 180 120 5 369 185 262 507 1,670 2,500 5,060 6,660 2,440 776 185 120

6 310 183 305 476 1,680 1,940 2,730 7,920 2,530 688 176 120 7 *515 239 70S 500 1,850 1,760 2.580 7,920 2,180 704 162 120 8 547 266 1,200 550 2,510 1,750 2,810 7,580 2,010 728 155 122 9 510 266 845 *600 2,390 1,710 2,790 7,620 3,480 605 158 125 10 275 239 648 700 2,680 1,500 3,260 8,020 3,400 556 158 118

11 262 239 577 809 2,270 1,470 4,090 9,900 2,630 494 176 115 12 248 252 535 962 2,950 1,370 4,300 10,600 2,570 458 166 T15 13 244 356 482 1,080 5,670 1,240 4,840 *7,900 2,890 428 *158 118 14 275 605 452 881 2,620 1,260 5,920 6,520 2,580 404 155 145 15 325 584 507 1,270 3,160 1,260 6,000 5,800 2,270 592 146 172

16 505 470 605 1,170 8,120 1.160 6,030 5,850 2,040 574 145 185 17 270 392 720 1,680 7,660 1,240 6,560 6,250 1,880 364 146 Tao 18 239 347 736 1,920 9,460 1,310 8,100 6,840 1,700 352 146 155 19 234 *398 712 1,330 *8,580 1,400 7,180 7,800 1,560 440 149 146 20 234 410 1,860 1,110 8,500 1,650 6,860 7,920 1,480 422 146 145 21 250 300 4.770 1,070 7,700 1,940 8,600 8,400 1,480 386 146 143 22 218 230 2,540 953 6,920 2,570 8,620 7,500 1,280 347 140 146 25 222 252 1,610 955 6,860 2,380 7,400 7,500 1,140 520 131 146 24 254 552 1,320 926 7,360 2,450 6,450 6,580 1,340 290 128 *155 25 248 542 1,220 962 10.000 2,600 6,010 6,140 1,570 270 122 166 26 552 558 1,320 944 7,500 2,600 5,780 5,550 1,290 252 120 155 27 500 547 1,180 908 5,550 2,400 5,690 5,220 1,120 244 118 149 28 598 520 1,250 1,120 4,450 *2,580 4,880 4,700 1,030 230 115 143 29 356 500 1,280 5,110 2,520 4,520 4,050 955 226 115 134 50 310 £18 1,010 4.070 2,780 4,410 5,510 °^ 115 125 31 290 756 2,620 2,760 5.510 202 118 Total 9,818 9,449 50,644 55,974 155,530 65,550 150,970 204,100 61,627 14,866 4,617 4,153 Mean 517 515 989 1,160 4,769 2,049 5,052 6,584 2,054 480 149 158 Ac-ft 19,470 18,740 60,780 71,350 264,900 126,000 299,400 404,800 122,200 29,490 9,160 8,200 Calendar year 1957: Max 8,440 Min 90 Mean 1,559 Ac-ft 1,129,000 Water year 1957-58: Max 10,600 Min 115 Mean 1,982 Ac-ft 1,454,000 Peak discharge (base 4,900 cfs). Dec. 21 (3:30 a.m.) 5,890 efs (7.76 ft); Jan. 29 (11 p.m.) 7,000 cfs (8.35 ft ; Feb. 18 (5 a.m.) 10,500 efs (10.12 ft): Feb. 25 (12 m. ) 11,300 cfs (10.50 ft); Apr. 22 (5 a.m.) 9.140 cfs (9^42 ft); May 12 (2:50 a.m.) 12,000 cfs (1O.85 ft); May 21 (6:50 a.m.) 9,400 efs (9.55 ft). Discharge measurement made on this day. JOHN DAY RIVER BASIN 45

465. John Day River at Service Creek, Oreg.

Location. Lat 44°47'40", long 120°00'30", in Nj sec. 18, T. 9 S., R. 23 E., on left bank 0.2 mile downstream from bridge on State Highway 207, half a mile downstream from Service Creek, and three-quarters of a mile southwest of Service Creek Post Office. Drainage area. 5.090 sq mi, approximately. Records available. March 1925 to September 1926, October 1929 to September 1958. Monthly discharge only for 1925-26 published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,632.42 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Nov. 6, 1929, staff gage at site 12 miles downstream at different datum. Nov. 6-22, 1929, staff gage and Nov. 23, 1929, to Sept. 25, 1930, water-stage recorder, at site 1,000 ft upstream at datum 4.01 ft higher. Sept. 26, 1930, to Feb. 6, 1956, water-stage recorder at site 1,000 ft upstream at datum 3.21 ft higher. Feb. 7, 1956, to Feb. 23, 1957, wire-weight gage at site 500 ft upstream at datum 0.76 ft higher. Average discharge. 30 years, 1,828 cfs (1,323,000 acre-ft per year). Extremes Maximum discharge during year, 16,900 cfs May 12 (gage height, 11.06 ft); mini mum, 145 cfs Sept. 11 (gage height, 3.10 ft). 1925-26, 1929-58: Maximum discharge, 28,900 cfs Mar. 19, 1932 (gage height, 16.75 ft, site and datum then in use), from rating curve extended above 11,000 cfs; min imum, 20 cfs Sept. 6, 1931. Remarks. Records good. Many diversions above station for irrigation.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 285 614 533 950 3,380 5,940 4,050 6,460 4,620 1,350 328 161 2 462 596 623 1,240 2,840 5,140 4,200 6,820 *4,800 1,370 298 *157 3 1,010 578 680 1,270 2,590 4,640 4,340 7,680 4,460 *1,660 286 157 4 1,060 560 623 1,080 2,410 4,140 4,460 8,100 4,160 1,520 286 157 5 861 515 560 908 2,380 *3,800 4,460 9,100 3,880 1,310 292 153 6 720 *497 596 830 2,430 3,550 4,120 11,100 3,610 1,170 286 153 7 *690 506 690 800 2,380 3,250 5,900 11,400 3,460 1,120 266 157 8 700 551 1,440 *830 3,500 2,960 4,260 10,400 3,400 1,170 253 153 9 690 569 1,350 938 3,360 3,000 4,340 10,400 4,120 1,070 234 149 10 641 560 1,100 1,040 3,780 2,790 4,480 10,700 5,520 950 254 157 11 596 551 *938 1,100 3,700 2,530 5,620 13,000 4,300 840 240 149 12 569 560 840 1,240 3,860 2,510 6,000 15,700 3,880 790 246 157 13 560 605 780 1,940 6,100 2,260 6,600 *1 1,900 4,200 712 240 177 14 569 750 750 1,640 4,640 2,260 7,760 9,450 4,090 645 229 181 15 605 927 740 1,600 4,280 2,300 *8, 700 7,800 3,610 609 224 224 16 623 830 820 2,070 11,200 2,240 8,650 8,480 3,250 *591 207 260 17 587 750 883 1,990 11 , 900 2,130 9,680 8,580 2,960 555 207 312 18 560 680 1,080 3,420 *14,800 2,280 11 , 300 8,800 2,680 537 212 305 19 542 670 1,070 2,380 13,800 2,340 10,400 9,800 2,410 528 212 292 20 533 730 1,640 1,820 12,600 2,550 9,560 10,600 2,150 654 212 286 21 524 700 4,750 *1,710 11,900 2,810 11,600 11 , 600 2,070 692 218 272 22 515 578 4,400 1,600 10,600 3,740 12,800 10,400 1,910 645 212 279 23 524 533 2,560 1,490 10,200 3,650 10 , 800 10,200 1,700 582 202 *279 24 533 596 1,890 1,490 10,700 3,670 8,900 9,060 1,680 528 190 505 25 560 650 1,840 1,510 14,000 3,860 8,360 8,060 2,400 501 185 372 26 596 650 1,900 1,550 12,200 3,930 8,180 7,620 2,190 456 173 380 27 770 670 1,900 1,510 8,720 3,690 8,140 7,280 1,840 431 165 388 28 820 641 1,900 1,530 7,080 3,570 7,100 6,560 1,650 431 153 380 29 720 614 1,990 2,780 - 3,760 6,540 5,660 1,540 397 155 372 30 660 569 1,610 7,040 6,380 4,880 1,410 565 157 358 31 641 1,290 4,300 4J 260 4,580 350 157 Total 19,726 18,800 43,766 55,596 201 , 330 103,540 215,680 282,170 95,950 24,529 6,957 7,282 Mean 636 627 1,412 1,793 7,190 3,340 7,189 9,102 3,132 791 224 243 Ac-ft 39,130 37,290 86,810 110,300 399,300 205,400 427,800 559,700 186,300 48,650 13,800 14,440 Calendar year 1957: Max 12,300 Min 100 Mean 2,348 Ac-ft 1,700,000 Water year 1957-58: Max 15,700 Mln 149 Mean 2,941 Ac-ft 2,129,000 Peak discharge (base, 5,200 cfs). Dec. 21 (time unknown) 6,540 cfs (7.12 ft); Jan. 30 (7 a.m.) 9,320 cfs (8.33 ft); Feb. 13 (12 m.) 6,420 cfs (7.06 ft); Feb. 18 (about 12 m.) 16,600 cfs (10.95 ft); Feb. 25 (7 p.m.) 16,200 cfs (10.84 ft); Apr. 22 (about 9 a.m.) 13,600 cfs (9.95 ft); May 12 (2 p.m.) 16 900 cfs (11.06 ft); May 21 (about 12 m.) 11,800 cfs (9.38 ft); June 10 (7 a.m.) 6,220 cfs (7.01 ft * Dischargescarge measuremenmeasurement made on thishs day. Note. Discharge computed from once-daily readings of supplementary wire-weight gage at site 1,000 ft upstream Dec. 19 to Jan. 8, Apr. 18 to May 12, May 16 to June 1. 46 JOHN DAY RIVER BASIN

480. John Day River at McDonald Ferry, Oreg.

Location. Lat 45°35'20", long 120°24'30", In NVf£ sec. 11, T. IN., R. 19 E., on left bank at McDonald Ferry, three-quarters of a mile downstream from Rock Creek and 10 miles east of Klondike. Drainage area. 7,580 sq mi, approximately. Records available. December 1904 to September 1958. Prior to Oct. 1, 1930, published as "at McDonald." Gage. Water-stage recorder. Datum of gage is 392.27 ft above mean sea level, datum of 1929. Prior to Aug. 30, 1930, staff gage at same site and datum. Average discharge. 53 years (1905-58), 2,030 cfs (1,470,000 acre-ft per year). Extremes. Maximum discharge during year, 16,400 cfs Feb. 19 (gage height, 8.29 ft); mini mum, 170 cfs Sept. 2. 1904-58: Maximum discharge, 27,800 cfs Feb. 6, 1907 (gage height, 10.8 ft); maximum gage height, 13.2 ft Feb. 8, 1950, from floodmark (Ice jam); minimum discharge, 4 cfs Aug. 31, 1931 (gage height, 0.68 ft). Maximum discharge known 39,100 cfs, from rating curve extended above 22,000 cfs, probably occurred In 1894 (gage height, 12.8 ft, from floodmarks). Remarks. Records excellent. Many diversions for Irrigation above station. Revisions (water years). WSP 1094: 1894(M), 1907, 1932(M). WSP 1448: 1908-9, 1912, 1916, 1920(M), 1922, 1932.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oc t. 1 to Dec. 9 Dec. 10 to Sept. 30 1.4 185 1.3 148 4.0 3,200 1.8 390 1.6 275 5.0 5,300 2.5 1,000 2.0 540 6.0 8,100 3.0 1,650 2.5 1,000 9.0 19,500 3.0 1,630 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 206 719 665 1,760 4,710 7,680 4,730 6,360 4,930 1,620 584 185 2 227 692 647 1,480 3,860 6,360 4,620 6,420 5,060 1,550 37? *174ITS- 3 297 665 612-572 1,180 3,380 5,580 4,690 6,840 *4,990 1,550 366 4 404 629 1,300 3,130 5,060 4,800 7,500 4,880 1,600 348 IS 1 5 1,120 620 719 1,420 2,900 *4,640 4,880 8,170 4,400 1.770 360 185 6 1,160 *612 692 1,360 2.780 4,310 4,880 9,150 4,120 1,550 342 a!90 7 940 580 629 1,120 2,850 4,060 4,620 10,600 3,880 1,590 550 3200 8 800 540 638 960 2,870 3,660 4,400 11,200 3,620 1,260 524 202 9 755 524 719 920 3,640 3,360 4,620" 10,600 5,480 1,190 314 202 10 755 548 1,640 955 3,820 3,340 4,750 10,400 5,970 1,230 308 206 11 755 580 *1,560 1,090 4,080 3,220 4,820 10,900 5.450 1,110 286 198 12 710 580 1,120 1,220 4,690 2,920 5,820 12,800 4,380 980 270 193 13 674 596 990 1,320 5,110 2,880 6,200 14.800 3,900 900 265 198 14 638 604 930 1,810 6,630 2,680 6,810 12,100 4,100 *840 270 193 15 620 612 9OO 2,120 5,320 2,620 *8,070 9,920 4,100 810 280 193 16 612 737 900 1,920 7,050 2,660 8,800 8,520 3,680 737 270 225 17 638 960 890 2,320 13,000 2,700 8,800 7,980 3,290 674 265 a240 18 683 890 980 2,390 13,400 2,500 9,400 8,140 5,000 647 251 a280 19 647 810 1,090 3,480 15,400 2,680 11,500 8,840 2,750 604 237 a360 20 620 746 1,300 3,020 14,100 2,710 10,800 10,300 2,520 572 252 a340 21 604 710 1,630 *2,380 13,300 2,900 10,200 10,400 2,560 548 227 a320 22 580 764 4,270 2,150 12,700 3,340 11,700 10,900 2,210 674 223 319 23 572 755 4,580 1,980 11,400 4,220 12.500 10,400 2,120 719 225 308 24 564 665 3,000 1,840 11,000 4 .,140 11,100 9,990 1,910 674 225 302 25 572 588 2,300 1,780 11,900 4,080 9,640 9,600 1,810 588 225 308 26 588 604 2,O8O 1,800 14,600 4,250 9,150 8,700 2,300 556 225 314 27 604 692 2,020 1,840 12,300 4,310 8,200 7,860 2,440 524 225 348 28 620 710 2,080 1,830 9,540 4,100 8,450 7,290 2,040 492 219 404 29 764 710 2,080 1,810 - 3,960 7,320 6,750 1,840 446 210 418 30 692 2,150 2,860 4,140 6,690 5,950 1,700 425 202 411 31 773 2,120 7,020 4,360 5,400 425 189 Total 20,372 20,134 46,103 60,430 219,460 119,420 222,760 284,780 101,230 28,655 8,459 7,773 Mean 657 671 1,487 1,949 7,838 3,852 7,4,25 9,186 3,374 924 273 259 Ac-ft 40,410 39,940 91,440 119,900 435,300 236,900 441,800 564,900 200,800 56,800 16,780 15,420 Calendar year 1957: Max 12,40O Mln 113 Mean 2,5O7 Ac-ft 1,815,000 Water year 1957-58: Max 15,400 Mln 174 Mean 3,122 Ac-ft 2,260,000

Peak discharge (base, 6,30O cfs). Jan. 51 (6 a.m.) 8,660 cfs (6.16 ft); Feb. 19 (7 a.m.) 16,4OO cfs (8.29 ft); Feb. 26 (1 to 5 p.m.) 15.8OO cfs (8.14 ft); Apr. 23 (9 to 11 a.m.) 12.6OO cfs (7.29 ft); May 13 (7;5O a.m.) 15,800 cfs (8.15 ft); May 22 (12 m.) 11,60O efs (7.00 ft).______* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of Interpolation and records for station at Service Creek. DESCHUTES RIVER BASIN 47

500. Deschutes River below Snow Creek, near Lapine, Oreg.

Location. Lat 43°48'50", long 121°46'40", in NWi sec. 28, T. 20 S., R. BE., on left bank just upstream from Crane Prairie Reservoir, 50 ft downstream from Snow Creek, 300 ft upstream from road bridge, and 17 miles northwest of Laplne. Drainage area. 132 sq ml Including Sparks, Elk, and Mud Lake basins, which have no surface outflow to Deschutes River; hydrologic drainage boundary uncertain owing to ground- water exchange. Records available. October 1937 to September 1958. Monthly discharge only October 1937, published in WSP 1318. Gage. Water-stage recorder. Altitude of gage Is 4,445 ft (from elevation of Crane Prairie Reservoir when slack water extended to gage). Prior to Sept. 10, 1938, at site 450 ft downstream at different datum. Average discharge. 21 years, 157 cfs (113,700 aere-ft per year). Extremes . Maximum discharge during year, 347 cfs Aug. 11 (gage height, 2.37 ft); minimum, 89 cfs Feb. 5-13. 1937-58: Maximum discharge, 444 cfs July 13, 1956 (gage height, 3.13 ft); maximum gage height, 4.12 ft Jan. 21, 1943 (ice jam); minimum discharge, 43 efs Dec. 27, 1941. Remarks . Records good. No regulation or diversion above station. Stream is spring fed and peak discharge may occur several months after the precipitation which caused it. Revisions (water years) . WSP 1248: 1951.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Backwater from Crane Prairie Reservoir Apr. 19 to May 4, Aug. 29) 1.1 1.5 177 2.0 283 2.5 367 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 191 147 121 126 91 100 98 114 201 226 336 297 2 T9T 144 121 T26 91 100 98 114 ?03 258 339 296 3 191 144 121 124 91 100 98 116 203 230 339 294 4 189 142 119 121 91 100 98 116 201 232 339 290 5 189 142 119 119 89 100 98 119 203 234 341 288 6 187 142 124 116 89 98 98 121 215 238 342 287 7 184 142 131 112 89 100 98 126 2O8 244 *344 288 8 182 142 126 109 89 100 98 131 219 248 344 292 9 179 142 124 109 89 98 98 136 217 *254 346 288 10 179 142 124 107 89 .95 98 139 215 260 346 287 11 177 142 124 107 89 98 100 144 *215 264 347 283 12 177 144 121 109 *89 98 102 149 217 268 3*6 283 13 174 T4"5154 *121 107 89 98 102 152 217 270 346 283 14 172 121 107 91 98 102 154 217 275 344 279 15 172 144 124 107 98 98 102 157 217 279 342 *275 16 170 142 126 104 102 98 1O2 162 217 285 339 274 17 170 142 126 104 98 95 104 164 217 290 338 270 18 164 142 129 100 98 95 102 170 215 299 336 268 19 162 139 142 100 100 95 102 172 217 299 334 266 20 *162 136 149 100 1OO 95 104 174 217 303 333 260 21 162 134 147 98 98 95 107 179 215 306 331 258 22 162 *134 142 98 95 95 107 187 215 310 328 256 23 162 134 139 98 95 95 107 194 222 314 322 254 24 160 131 139 98 100 95 107 196 252~224 317 321 250 25 16O 131 139 98 102 95 109 189 321 319 246 26 157 129 139 95 102 95 109 194 219 324 314 244 27 154 129 139 95 102 95 109 194 219 326 310 242 28 154 126 144 98 102 95 *109 191 219 329 306 236 29 152 124 136 98 - 98 109 191 219 331 305 234 30 149 134 95 98 112 194 222 333 303 2 3O 31 147 129 93 98 203 334 301 Tota] 5,281 4,159 4,040 3,278 2,648 3,013 3,087 4,942 6,447 8,771 10,281 8,098 Mean 170 139 130 106 94.6 97.2 103 159 215 283 332 270 Ac-ft 10,470 8,250 8,010 6,500 5,250 5,980 6,120 9,800 12,790 17,400 20,390 16,060 Calendar year 1957: Max 248 Mln 119 Mean 179 Ac-ft 129,700 Water year 1957-58: Max 347 Mln 89 Mean 175 Ac-ft 127,000 * Discharge measurement made on this day. 48 DESCHUTES RIVER BASIN

505. Cultus River above Cultus Creek, near Lapine, Oreg.

Location. Lat 43°49'10", long 121°47'50" ) near line between sees. 20 and 29, T. 20 S., R. 8 E., on left bank: at road crossing, 2 miles upstream from Cultus Creek and 13 miles northwest of Lapine. Drainage area. 16.5 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available. October 1922 to September 1925, October 1937 to September 1958. Monthly discharge only October 1937, published in WSP 1318. Gage. Water-stage recorder. Altitude of gage is 4,450 ft (by barometer). Oct. 1, 1922, to Sept. 30, 1925, staff gage at site half a mile upstream at different datum. Average discharge.--24 years, 65.8 cfs (47,640 acre-ft per year). Extremes.--Maximum discharge during year, 115 cfs May 23 (gage height, 0.91 ft); minimum, 49 cfs Feb 9-15 1922-25] 1937 :58: Maximum discharge, 178 cfs May 31, 1956 (gage height, 1.04 ft); maximum gage height, 1.23 ft Oct. 30, 1952 (backwater from culvert installation); mini mum discharge, 28 cfs Mar. 22, Apr. 5-10, Nov. 18, 21, 1941. Remarks. Records fair. No regulation or diversion above station. Revisions (water years).--WSP 1448: 1923-25, 1947.

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 67 64 61 55 52 68 61 64 82 71 89 93 2 67 64 61 55 52 64 61 66 az 75 89 93 3 67 64 61 55 52 64 61 68 82 78 89 93 4 67 64 61 55 52 64 61 70 82 82 89 93 5 67 64 61 55 52 64 60 72 82 82 89 89 6 66 64 61 55 52 64 60 74 82 86 89 89 7 66 64 61 55 52 64 60 76 86 86 *89 89 8 66 64 58 55 52 64 60 78 86 89 89 89 9 66 64 58 55 49 63 60 80 86 *89 89 89 10 66 64 58 55 49 63 60 82 86 89 89 89 11 65 64 58 55 49 63 60 84 *86 89 86 86 12 65 64 58 55 *49 63 60 86 86 89 86 86 13 65 64 *58 55 49 63 60 88 86 89 86 86 14 65 64 58 52 49 63 59 90 82 89 82 82 15 65 64 61 52 49 63 59 93 78 89 82 *82 16 64 64 61 52 52 63 59 96 75 89 82 82 17 6£ 64 61 52 55 63 59 96 71 89 82 82 18 64 64 61 52 55 62 59 96 68 89 82 82 19 64 64 61 52 58 62 59 96 64 89 82 82 20 *64 64 61 52 61 62 59 100 64 89 82 82 21 64 64 61 52 64 62 59 96 61 89 82 82 22 64 *64 61 52 64 62 59 100 67 89 82 82 23 64 64 61 52 ~S568 62 58 112 61 89 82 82 24 64 64 58 52 62 58 106 64 89 82 82 25 64 64 58 52 68 62 58 100 64 89 82 82 26 64 64 58 52 68 62 58 93 64 89 86 82 27 64 64 58 52 68 61 58 89 64 89 86 82 28 64 61 58 52 68 61 *58 82 64 89 89 82 29 64 61 58 52 61 60 82 64 89 89 82 30 64 61 58 52 61 62 78 68 89 "93"93 78 31 64 58 52 61 78 89 Total 2,014 1,911 1,846 1,651 1,576 1,946 1,785 2,671 2,231 2,696 2,668 2,554 Mean 65.0 63.7 59.5 53.3 56.3 62.8 59.5 86.2 74.4 87.0 86.1 85.1 Ac-ft 3,990 3,790 3,660 3,270 3,130 3,860 3,540 5,300 4,430 5,350 5,290 5,070 Calendar year 1957: Max 115 Mln 39 Mean 73.5 Ac-ft 53,180 Water year 1957-58: Max 112 Mln 49 Mean 70.0 Ac-ft 50,680 * Discharge measurement made on this day. Note. No gage-height record Oct. 1-19, Mar 4 to Apr. 27, Apr. 29 to May 14; discharge Interpo- lated. DESCHUTES RIVER BASIN 49

510. Cultus Creek above Crane Prairie Reservoir, near Lapine, Oreg.

Location.--Lat 43°49'30", long 121°49'30" ) in SW£ sec. 19, T. 20 S., R. 8 E., on left bank 1,000 ft upstream from road bridge, three-quarters of a mile downstream from Cultus Lake, and 19 miles northwest of Lapine. Drainage area. 33.2 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available. March to September 1924 (published as "above Crane Prairie, near Lapine") , October 1937 to September 1958. Monthly discharge only October 1937 to September 1949, published in WSP 1318. Records for October 1923 to February 1924, pub lished in WSP 594, have been found to be unreliable and should not be used. Gage.--Water-stage recorder. Altitude of gage is 4,545 ft (by barometer). Mar. 1 to 3~ept. 30, 1924, staff gage at site 100 ft upstream at different datum. Average discharge.--21 years (1937-58), 23.9 cfs (17,300 acre-ft per year). Extremes.--Maximum discharge during year, 219 cfs May 26 (gage height, 2.67 ft); no flow 1924, 1937-58: Maximum discharge, that of May 26, 1958; maximum gage height, 2.76 ft June 15, 1950 (backwater from trees); no flow at times. Remarks. Records good except those below 2 cfs, which are fair, and those for periods of ice effect or no gage-height record, which are poor. No regulation or diversion above station. Revisions (water years).--See Records available. Revised figures of discharge, in cubic feet per second, for the water year 1957, superseding those published in WSP 1518, are given herewith:

Date Discharge Date Discharge Date Discharge Date Discharge Date Discharge 1957 1957-Con. 1957-Con. 1957-Con. 1957-Con. Aug. 25 0.7 Aug. 31 0.3 Sept. 6 0.1 Sept. 12 0.1 Sept. 18 0 26 .6 Sept. 1 .2 7 .1 13 .1 19 0 27 .5 2 .2 8 .1 14 0 20 0 28 .4 3 .2 9 .1 15 0 28 0 29 .4 4 .1 10 .1 16 0 29 0 30 .3 5 .1 11 .1 17 0 30 0

Runoff In Month Cfs-days Maximum Minimum Mean acre-feet August 1957 ...... 61.4 4.8 0.3 1.98 122 Water year 1956-57 ...... 27.8 123 0 27.8 20,110 Discharge., in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 & .l 0.1 bO.4 24 26 41 17 48 173 59 9.2 1.4 2 .1 b.4 23 26 41 18 48 164 56 8J3 T^ 3 .1 .1 .4 23 25 39 17 48 a!60 53 8.3 1.2 4 .1 .1 .5 23 24 38 17 48 a!50 49 7.4 1.1 5 .1 .1 .5 22 24 37 16 51 a!45 47 7.0 1.0 6 .2 .1 1.4 21 23 37 16 53 a!40 42 6.5 1.0 7 .2 **.! b2 20 23 34 16 55 a!35 40 6.2 .9 8 .2 .1 2.2 20 22 34 15 58 a!30 37 5.8 .9 9 .2 .1 2.4 19 22 34 14 63 a!25 *36 5.5 1.0 10 .2 .1 2.4 19 23 33 15 69 a!20 34 5.2 .9 11 .2 .1 2.4 19 23 32 15 81 *119 33 4.8 .8 12 .2 .2 2.4 20 *24 30 15 89 117 31 4.2 .8 13 .2 .5 2.7 21 24 29 15 90 109 28 3.9 1.1 14 .2 .3 2.6 21 24 28 16 90 105 26 3.5 1.0 15 .2 .2 2.6 22 27 27 16 *90 101 24 3.2 **1.0 16 .2 .3 2.9 21 41 26 17 91 97 23 3.0 .9 17 .2 .5 2.9 22 41 25 18 95 95 22 2.9 .8 18 .1 b.6 4.8 21 41 24 21 104 92 22 2.7 .8 19 .1 b.7 8.8 21 40 23 23 112 91 21 2.6 .7 20 **.! .8 8.8 21 39 21 27 119 90 20 2.4 .6

21 .1 jui 12 21 39 21 32 128 89 18 2.4 .5 22 .1 ** . 9 12 20 38 20 41 139 86 17 2.2 .5 23 .1 .9 12 20 38 20 44 173 86 15 2.1 .4 24 .1 .7 12 21 39 19 47 200 88 14 2.1 .3 25 .1 .6 12 22 41 19 48 213 84 14 1.9 .3 26 . .1 .5 14 21 42 18 48 215 80 12 1.9 .3 27 .1 .5 14 21 43 18 48 213 75 12 1.8 .2 28 .1 .4 25 23 41 17 *48 207 71 12 1.6 .2 29 .1 b.4 26 24 - rr 48 196 66 11 1.6 .2 30 .1 b.4 26 26 17 48 183 M 10 1.5 .2 31 .1 25 Zl_ 17 176 9.6 1.4 Total 4.2 11.4 243.5 669 883 836 796 3,545 3,246 847.6 123.6 22.3 Mean 0.14 0.38 7.85 21.6 31.5 27.0 26.5 114 108 27.3 3.99 0.74 Ac-ft 8.3 23 483 1,330 1,750 1,660 1,580 7,030 6,440 1,680 245 44 Calendar year 1957: Max 123 Min 0 Mean 23.9 Ac-ft 17,280 Water year 1957-58: Max 215 Min 0 Mean 30.8 Ac-ft 22,270 Discharge measurement made on this day. -* Field estimate made on this day. a No gage-height record; discharge interpolated. b Stage-discharge relation affected by ice. 50 DESCfflJTES RIVER BASIN

520. Deer Creek above Crane Prairie Reservoir, near Lapine, Oreg.

Location. Lat 43°48'20", long 121 "50"20", in NW£NW£ sec. 36, T. 20 S. , R. 7 E. , on right bank 150 ft downstream from road bridge, l£ miles downstream from Little Cultus Lake, and 19 miles northwest of Lapine. Drainage area. 21.5 sq mi. Records available. February to September 1924 (published as "above Crane Prairie, near Lapine"), October 1937 to September 1958. Monthly discharge only October 1937 to September 1949, published in WSP 1318. Records for October 1923 to January 1924, published in WSP 594, have been found to be unreliable and should not be used. Gage. Water-stage recorder. Log control since Oct. 11, 1938. Altitude of gage is 7,520 ft (by barometer). Feb. 1 to Sept. 30, 1924, staff gage at site 75 ft upstream at various datums. Oct. 1, 1937, to Sept. 30, 1938, water-stage recorder at road bridge 150 ft upstream at different datum. Average discharge. 21 years (1937-58), 7.94 cfs (5,750 acre-ft per year). Extremes. Maximum discharge during year, 90 cfs about May 25 (gage height, 1.89 ft); minimum, 0.1 cfs Nov. 2, 3, Aug. 28 to Sept. 6, Sept. 27-30. 1924, 1937-58: Maximum discharge, 97 cfs Nov. 30, 1942 (gage height, 1.95 ft); maximum gage height, 3.14 ft sometime during period Jan. 25 to Apr. 2, 1956 (ice Jam); no flow at times. Remarks. Records fair except those for periods of ice effect or no gage-height record, which are poor. No regulation or diversion above station. Revisions. See Records available.

Rating table, water year 1957-58, except periods of ice effect (gage height, in feet, and discharge, in cubic feet per second) 0.3 0.1 1.0 .4 1.2 1.3 .5 3.0 1.5 .7 7.5 1.8 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 0.6 0.2 0.4 7.2 6.8 9-9 4.5 26 50 7.0 0.5 0.1 2 .8 .1 .4 7.0 6.2 4.5 28 45 6.8 .5 .1 3 76 .1 .4 6.5 5.8 8.5 4.5 28 40 6.5 .5 .1 4 .6 .2 .4 b6. 5 5.5 8 4.5 31 38 6.0 .6 .1 5 .6 .2 .5 b6.5 5.2 8 4.5 33 35 5.5 76 .1 6 .6 .2 .7 b6.5 5.0 8 4.5 35 32 5.0 .6 .1 7 .6 .2 1.0 b6.0 4.8 7.5 4.5 36 30 4.8 .6 .2 8 .5 .2 2.0 b5.5 478 7.5 4.5 38 30 4 .6 .2 9 .5 .2 2.2 5.0 4.8 7.5 4.5 41 28 *3.6 .6 .2 10 .4 .2 2.5 4.8 5.0 7 4.5 45 26 3.4 .6 .2 11 .4 .2 2.5 4.8 5.0 7 5 49 *25 3 .6 .2 12 .4 .3 2.4 b5.5 *5.2 7 5.5 50 24 3 .6 .2 13 .3 .9 *2.3 b5.5 5.5 6.5 6 49 22 2.5 .6 .2 14 .3 .3 2.3 5.5 6 6.5 7 45 20 2.5 .6 .2 15 .3 .3 2.1 6.0 7 6.5 8 *44 17 2 .6 **.2 16 .2 .3 2.1 5.8 9 6 10 44 16 2 .6 .2 17 .2 b.4 2.1 6.2 9 6 12 45 15 2 .6 .2 18 .2 b.5 3.0 b6.2 9 6 15 47 13 2 .6 .2 19 .2 b.6 5.0 b6.0 9 6 18 49 12 1.5 .5 .2 20 **.2 b.7 7.5 5.5 9 5.5 22 54 12 1.5 .5 .2 21 .2 b.7 8.7 b5.5 9 5.5 25 56 11 1.5 .5 .2 22 .2 **b.7 8.4 b5.5 9 5.5 30 60 11 1 .5 .2 23 .2 b.7 7.5 b5.8 8.5 5.5 34 70 11 1 .4 .2 24 .2 b.6 7.5 5.8 9 5 35 75 11 .9 .4 .2 25 .2 b.6 7.5 5.8 9 5 34 80 11 .8 .3 .2 26 .3 b.5 8.1 5.8 9.5 5 32 78 10 .7 .2 .2 27 .3 b.5 8.4 5.8 9.5 5 30 75 9.3 .6 .2 .1 28 .3 b.4 10 6.0 9 4.5 28 70 8.4 .6 .1 .1 29 .3 .4 9.9 6.8 475 26 65 7.8 .5 7T .1 30 .3 .4 9.0 7.0 4.5 26 60 7.2 **75 .1 .1 31 .3 8.1 7.2 4.5 55 .5 .1 Total 11.3 11.8 134.9 185.5 200.1 197.5 453.5 1,561 627.7 83.2 14.4 5.0 Mean 0.36 0.39 4.35 5.98 7.15 6.37 15.1 5O.4 20.9 2.68 0.46 0.17 Ac-ft 22 23 268 368 397 392 900 3,100 1,250 165 29 9.9 Calendar year 1957: Max 62 Mln O.I Mean 7.82 Ac-ft 5,660 Water year 1957-58: Max 80 Mln 0.1 Mean 9.55 Ac-ft 6,920 * Discharge measurement made on this day. ** Field estimate made on this day. b Stage-discharge relation affected by ice. Note.--No gage-height record Nov. 29 to Dec. 12, Feb. 13 to Apr. 25, May 22 to June 10, July 8 11-29; discharge estimated on basis of weather records and records for Cultus Creek above Crane Prairie Reservoir, near Lapine, and Odell Creek near Crescent. DESCHUTES RIVER BASIN 51

525. Quinn River near Lapine, Oreg.

Location. Lat 43°47'10", long 121°50 I 10", In NW^ sec. 1, T. 21 S., R. 7 E., on left bank just upstream from Crane Prairie Reservoir, 150 ft downstream from springs at head of river and 18 miles northwest of Lapine. Records available.--June 1922 to September 1925 (published as "above Crane Prairie, near Lapine"), October 1937 to September 1958. Monthly discharge only October 1937, pub lished in WSP 1318. Gage. Water-stage recorder and since Sept. 13, 1938, log control. Datum of gage is 4",442.1 ft above mean sea level, based on elevation of Crane Prairie Reservoir when slack water reached station. June 1, 1922, to Sept. 30, 1925, staff gage at site 150 ft downstream at different datum. Average discharge. 24 years, 24.6 cfs (17,810 acre-ft per year). Extremes.--Maximum daily discharge during year, 50 cfs Aug. 7-23; maximum gage height, 3.28 ft Apr. 26 (backwater from reservoir); minimum daily discharge, 22 cfs Dec. 2-7, Feb. 8-15. 1922-25, 1937-58: Maximum discharge, 59 cfs July 4, 1949 (gage height, 1.97 ft); maximum gage height, 3.92 ft June 25, 1943 (backwater from reservoir); practically no flow Nov. 14, 1941. Remarks. Records fair. No regulation or diversion above station. Revisions (water years). WSF 1448: 1939, 1941.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Backwater from Crane Prairie Reservoir Jan. 23 to June 4) 1.7 1.8 1.9 2.0 60 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 28 25 23 25 23 25 30 34 42 43 45 43 2 28 24 22 ZS 23 25 30 3T 42 43 47 43 3 28 24 22 25 23 25 30 34 42 43 49 41 4 38 24 22 25 23 25 30 35 43 43 49 4O 5 27 24 22 25 23 25 30 35 43 43 49 40 6 27 24 22 25 23 25 30 35 43 43 49 40 7 27 24 22 25 23 26 30 35 43 43 so-50 40 8 27 24 23 25 22 26 31 35 43 43 40 9 26 24 23 25 22 26 31 35 43 *43 so 38 10 26 24 24 25 22 26 31 35 43 43 50 37 11 26 25 24 25 22 26 31 36 *43 43 50 37 12 26 25 24 25 *22 26 31 36 43 41 50 37 13 26 25 *24 24 22 26 31 36 43 41 50 35 14 26 25 24 24 22 27 32 36 43 40 50 35 15 26 25 24 24 22 27 32 *36 43 40 50 *34 16 25-25 25 24 24 23 27 32 36 43 40 50 34 17 25 24 24 23 27 32 37 43 40 50 33 18 25 25 24 24 23 27 32 37 43 40 50 33 19 25 25 24 25 23 27 32 37 43 40 50 31 20 *25 25 24 25 23 28 32 38 43 40 50 31 21 25 25 24 25 23 28 33 38 43 40 50 31 22 25 *25 24 25 24 28 33 38 43 4O 50 31 23 25 25 24 25 24 28 33 39 43 41 50 30 24 25 25 24 25 24 28 33 39 43 41 49 3O 25 25 24 24 25 24 28 33 39 43 41 49 3O 26 25 24 24 24 24 28 33 4O 43 41 49 28 27 25 23"23 24 24 24 f9~29 34 40 43 43 49 28 28 25 25"25 24 24 3¥ 4O 43 43 47 28 29 25 23 24 29 34 41 43 43 45 27 30 25 23 25 24 29 34 IT 43 43 45 FT 31 25 25 24 29 41 43 45 Total 802 731 733 763 643 835 954 1,148 1,287 1,294 1,516 1,032 Mean 25.9 24.4 23.6 24.6 23.0 26.9 31.8 37.0 42.9 41.7 48.9 34.4 Ae-ft 1,590 1,45O 1,45O 1,510 1,280 1,660 1,890 2,280 2,550 2,570 3,010 2,05O Calendar year 1957; Max 47 Mln 22 Mean 31.5 Ac-ft 22.8OO Water year 1957-58: Max 5O Mln 22 Mean 32.2 Ac-ft 23,290 * Discharge measurement made on this day. Note. Backwater from Crane Prairie Reservoir Jan. 23 to June 4; discharge Interpolated. 52 DESCHUTES RIVER BASIN

530. Charlton Creek above Crane Prairie Reservoir, near Lapine, Oreg.

Location.--Lat 43°47'00", long 121 e50'00", in NE^-SW^- sec. 1, T. 21 S., R. 7 E. , on left banK 3 miles northwest of Crane Prairie Dam and 18 miles northwest of Lapine. Drainage area. 15.6 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available. May, June 1923, October 1937 to September 1951, May to September 19b2, May to September 1953, May 1954 to September 1955, May 1956 to September 1958. Monthly discharge only prior to October 1949, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 4,458.70 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. May 1 to June 30, 1923, staff gage at about same site at different datum. Average discharge.--17 years (1937-51, 1954-55, 1956-58), 1.51 cfs (1,090 acre-ft per year). Extremes. Maximum discharge during year, 41 cfs May 23 (gage height, 1.46 ft), from rating curve extended above 20 cfs; maximum gage height, 1.76 ft Apr. 27 (ice jam); no flow at times. 1923, 1937-58: Maximum discharge, 54 cfs June 12, 1950 (gage height, 1.53 ft), from rating curve extended above 22 cfs; maximum gage height, 2.39 ft Mar. 9, 1957 (ice jam); no flow for many months each year. Remarks. Records fair for May and June, poor for other months. No regulation or diversion above station.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) (Stage-discharge relation affected by ice Apr. 21, 23) 0.4 1.2 1.1 .6 3.2 1.3 .7 6.6 1.5 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 0 7.5 18 0 2 0 8.9 18 .2 3 0 12 20 0 4, 0 14 17 0 5 0 13 15 0 6 0 11 21 0 7 0 12 18 0 8 0 14 20 0 9 0 16 16 0 10 0 18 14 0 11 0 18 *12 0 12 0 15 11 0 13 0 12 9.8 0 14 0 13 8.4 0 15 0 *15 8.0 0 16 a. 5 16 7.1 0 17 al 18 11 0 18 al.5 18 7.5 0 19 a2 20 8.4 0 20 a2.5 20 12 0 21 a3 20 9.4 0 22 a3.5 24 7.1 0 23 a4 33 8.4 0 24 a4.2 36 11 0 25 a4.5 27 8.0 0 26 4.9 26 5.6 0 27 4.9 23 4.9 0 28 5.2 22 4.2 0 29 - 5.6 19 1.9 0 30 6.B. 18 0_ 0 31 20 0 Total 0 0 0 0 0 0 53.9 559.4 332. 7 0.2 0 0 Mean 0 0 0 0 0 0 1.80 18.0 11.1 0.006 0 0 Ac-ft 0 0 0 0 0 0 107 1,110 660 0.4 0 0 Calendar year 1957: Max 21 Min 0 Mean 1.75 Ac-ft 1,270 Water year 1957-58: Max 36 Min 0 Mean 2.59 Ac-ft 1,880 * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of observer's notes and records for Deer Creek above Crane Prairie Reservoir, near Lapine. DESCHUTES RIVER BASIN 53

540. Deschutes River below Crane Prairie Reservoir, near Lapine, dreg.

Location. Lat 43°45'10", long 121°46'50", in NW£ sec. 16, T. 21 S., R. 8 E., on left bank 600 ft downstream from Crane Prairie Dam and 15 miles northwest of Lapine. Drainage area.--254 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available August 1907 to November 1908 and August 1912 to September 1913 (fragmentary), October 1913 to September 1917, February 1922 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Prior to October 1949, pub lished as "at Crane Prairie, near Lapine." Gage. Water-stage recorder. Datum of gage is 4,419.78 ft above mean sea level (Pacific Power & Light Co. bench mark). Aug. 15, 1907, to Sept. 30, 1917, and Feb. 23 to June 8, 1922, staff gages at site half a mile upstream at different datums. June 9, 1922, to May 9, 1932, staff gage or water-stage recorder at present site and datum. Average discharge. 40 years (1913-17, 1922-58), 212 cfs (153,500 acre-ft per year). Extremes. Maximum discharge during year, 600 cfs Sept. 4-6 (gage height, 2.40 ft); minimum, 34 cfs Oct. 24 (gage height, 0.58 ft). 1913-17, 1922-58: Maximum discharge, 1,170 cfs July 28, 1947 (gage height, 3.34 ft); minimum, 2 cfs Dec.- 21, 1940, Nov. 1, 1942, June 13-25, 1948. Remarks. Records good. Flow regulated since 1922 by Crane Prairie Reservoir (see p. 60). No diversion above station. Revisions (water years) . WSP 1218: Drainage area. WSP 1318: 1929(M).

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 36 1.5 242 66 2.0 422 1.0 106 2.5 650 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 239 50 49 52 53 55 55 168 524 502 484 467 2 196 50 49 52 53 55 55 166 524 502 484 467 3 163 49 49 52 53 55 55 305 524 502 484 467 4 152 49 49 52 53 55 55 422 524 502 484 534 5 152 49 49 52 53 55 55 418 524 497 484 600 6 152 49 49 52 53 55 55 414 524 497 480 6OO 7 152 49 49 52 53 55 55 414 524 497 480 595 8 118 49 49 52 53 55 55 414 524 497 480 590 9 86 49 49 52 53 55 55 414 524 *497 480 590 10 86 49 49 52 53 55 55 414 520 497 480 *590 11 86 49 49 52 53 55 55 414 *520 497 476 590 12 86 49 49 52 53 55 55 414 520 497 476 586 13 86 49 49 52 53 55 55 414 520 497 476 586 14 86 49 49 52 53 55 55 414 520 497 472 581 15 86 49 49 52 53 55 55 414 515 493 472 581 16 86 49 49 52 53 55 55 414 515 493 472 576 17 86 49 49 53 53 55 56 414 515 493 472 576 18 86 49 50 53 53 55 56 414 515 493 472 571 19 86 49 50 53 53 55 56 414 511 493 472 571 20 86 49 50 53 53 55 58 414 511 493 472 562 21 86 49 50 53 53 55 61 414 511 493 472 557 22 86 *49 50 53 53 55 64 459 511 493 472 557 23 86 49 50 53 55 55 66 529 511 493 472 552 24 63 49 52 53 55 55 68 529 506 489 472 552 25 52 49 52 53 55 55 71 529 506 489 472 552 26 50 49 52 53 55 55 121 529 506 489 467 547 27 50 49 52 53 55 55 174 529 506 489 467 543 28 50 49 52 53 55 *55 174 529 506 489 467 538 29 50 49 52 53 - 55 171 529 506 489 467 543 30 50 49 52 53 55 171 529 502^ 484 467 543 31 50 52 53 55 524 484 467 Total 3,029 1,472 1,549 1,627 1,496 1,705 2,247 13,318 15,469 15,317 14,714 16,764 Mean 97.7 49.1 50.0 52.5 53.4 55.0 74.9 430 516 494 475 559 Ac-ft 6,010 2,920 3,070 3,230 2,970 3,380 4,460 26,420 30,680 30,380 29,180 33, 250 Calendar year 1957: Max 625 Min 48 Mean 215 Ac-ft 155.9OO Water year 1957-58: Max 6OO Min 49 Mean 243 Ao-ft 176,000 Discharge measurement made on this day. 54 DESCHUTES RIVER BASIN

545. Brown Creek near Lapine, Oreg.

Location. Lat 43°43'30", long 121°48'40", in SW£NE£ sec. 30, T. 21 S., R. 8 E. , on left bank ij miles upstream from mouth and 16 miles northwest of Lapine. Drainage area. 19.7 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange . Records available. May 1922 to September 1925, July 1938 to September 1958. Monthly discharge only July 1938 to September 1949, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 4,372.94 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. May 24, 1922, to Sept. 30, 1925, staff gage and July 1, 1938, to Nov. 1, 1945, water-stage recorder, at site l£ miles downstream at different datums. Average discharge. 23 years, 40.2 cfs (29,100 acre -ft per year). Extremes . --Maximum discharge during year, 60 cfs Sept. 8 (gage height, 1.16 ft); minimum daily, 41 cfs Feb. 5 to Mar. 10. 1922-25, 1938-58: Maximum discharge, 104 cfs Aug. 4, 1956 (gage height, 1.64 ft); minimum, 16 cfs July 22-25, 1941, and at times December 1941 to March 1942. Remarks. --Records good. No regulation or diversion above station. Revisions (water years ) . WSP 1448: 1922-24. Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) (Backwater from moss June 29 to July 23; 0.9 1.0 1.2 63 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Bar. Apr. Hay June July Aug. Sept.

1 53 46 49 46 4"242 41 43 44 45 45 51 57 Z 53 48 49 47 4T 43 44 45 45 5T 57 3 53 48 49 46 42 41 43 44 46 45 53 57 4 52 48 49 46 42 41 43 45 46 45 53 57 5 52 48 48 46 4_! 41 43 45 46 45 53 57 6 52 48 48 45 41 41 43 45 46 45 53 57 7 52 49 49 45 41 41 43 45 45 45 53 58 8 51 49 48 45 41 41 43 45 45 44 53 59 9 51 49 47 45 41 41 43 45 45 44 53 59 10 51 49 47 45 41 41 43 45 45 44 53 *59 11 50 49 47 45 41 42 43 45 *45 44 53 59 12 50 49 47 45 *41 42 43 45 45 44 53 59 13 49 51 47 45 41 42 43 45 45 44 54 59 14 49 55 47 45 41 42 43 45 45 45 54 59 15 49 49 47 45 41 42 43 *45 45 45 54 59 16 49 49 47 44 41 42 44 45 45 45 54 59 17 49 49 47 44 41 42 44 45 45 45 54 59 18 49 49 47 44 41 42 44 45 45 46 55 59 19 48 49 47 44 41 42 44 45 45 47 55 58 20 *48 49 48 44 41 42 44 45 45 48 55 58 21 48 49 48 44 41 42 44 45 45 48 55 58 22 48 *49 47 44 41 42 44 45 45 48 55 58 23 48 49 47 44 41 42 44 46 46 48 56 58 24 48 49 47 44 41 42 44 48 47 49 56 58 25 48 49 47 44 41 42 44 49_ 47 49 56 58 26 48 49 46 43 41 42 44 48 46 49 56 58 27 48 49 46 42 41 42 44 47 46 49 56 58 28 48 49 46 42 41 42 44 47 46 51 51 58 29 48 49 46 42 43 44 46 45 51 57 58 30 48 49 46 42 47 44 46 45 51 57 58 31 48 46 42 43 46 51 57 Total 1,538 1,467 1,466 1,373 1,152 1,295 1,305 1,410 1,361 1,444 1,685 1,745 Mean 49.6 48.9 47.3 44.3 41.1 41.8 43.5 45.5 45.4 46.6 54.4 58.2 Ac-ft 3,050 2,910 2,910 2,720 2,280 2,570 2,590 2,800 2,700 2,860 3,340 3,460 Calendar year 1957: Max 59 Mln 46 Mean 52.4 Ac-ft 37,920 water year 1957-58: Max 59 Mln 41 Mean 47.2 Ac-ft 34,190 Discharge measurement made on this day. DESCHUTES RIVER BASIN 55

555. Odell Creek near Crescent, Oreg.

Location. Lat 43°32'50", long 121°57'40", in SW£ sec. 25, T. 23 S., R. 6 E. , on left bank 1,000 ft downstream from Odell Lake, 3-| miles north of Crescent Lake, and 14 miles northwest of Crescent. Drainage area. 39.0 sq mi. Records available. August, September 1911, August, September 1912, January, February, May to November 1913, April to August 1914, December 1923 to June 1924, May 1933 to September 1958. Gage heights and discharge measurements only August, September 1911, January 1913. Published as Odell Lake outlet near Crescent 1911-12. Records for January to July 1912, published in WSP 332, have been found to be unreliable and should not be used. Gage. Water-stage recorder. Datum of gage is 4,779.05 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Aug. 5 to Sept. 18, 1911, Aug. 14, 1912, to Aug. 12, 1914, and Nov. 18, 1923, to June 7, 1924, staff gages at several sites within 700 ft of present site at various daturas. Average discharge. 25 years (1933-58), 82.7 cfs (59,870 acre-ft per year). Extremes . Maximum discharge during year, 193 cfs May 27 (gage height, 0.90 ft); minimum, 45 cfs Nov. 4-9. 1912-14, 1923-24, 1933-58: Maximum discharge, 416 cfs Nov. 24, 1953 (gage height, 1.44 ft); maximum gage height, 2.03 ft Jan. 5, 1947 (ice jam); minimum discharge, 9 cfs sometime during period Sept. 7-30, 1934. Remarks. Records good. Flow affected occasionally in winter by ice jams at outlet of Odell Lake, and slightly affected at times by seiches on Odell Lake. No diversion above station. Revisions (water years). WSF 754: Drainage area. WSP 794: 1933-34. WSP 1448: 1924, 1934(m) . See also Records available.

Rating table, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) 0.3 32 .4 48 .5 69 .6 97 .9 193 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 65 50 56 122 122 131 69 94 176 125 63 54 2 67 48 52 119 112 122 69 91 173 125 65 52 3 12 46 50 109 106 119 69 91 183 119 69 50 4 69 45 48 103 *97 112 67 91 180 112 67 50 5 69 45 48 97 97 112 65 94 180 109 65 50 6 69 45 58 91 94 106 65 100 183 109 65 50 7 67 45 67 86 91 103 65 103 183 109 65 50 8 67 *45 69 83 89 103 63 106 186 *106 65 56 9 65 45 67 77 91 100 63 *109 183 100 65 58 10 63 46 65 77 97 97 63 116 176 97 65 58 11 63 48 63 86 100 89 63 122 170 94 65 56 12 63 52 63 103 109 86 61 125 163 91 61 56 13 67 67 61 100 112 86 61 125 *154 89 61 63 14 67 89 58 100 116 83 61 122 147 83 58 63 15 65 83 61 100 128 80 61 122 144 77 56 63 16 65 80 63 97 144 77 65 122 141 80 56 61 17 63 77 69 106 144 75 77 125 141 80 58 61 18 61 83 80 100 141 72 *83 131 141 89 58 58 19 58 83 100 94 141 69 89 138 150 83 56 58 20 56 77 131 94 141 67 94 141 157 80 56 56 21 56 69 144 91 138 67 106 147 154 77 58 58 22 54 67 141 86 134 67 125 150 150 77 58 58 23 54 67 131 89 131 65 125 160 160 75 58 58 24 52 65 131 100 134 65 122 173 167 75 58 56 25 54 63 128 97 144 67 119 180 160 72 61 58 26 54 61 138 91 147 65 116 186 157 69 61 56 27 54 58 138 91 144 65 109 190 150 69 58 56 28 54 58 147 103 134 65 106 183 144 69 56 58 29 52 54 144 125 - 65 100 180 138 69 54 58 30 52 54 134 131 65 97 180 _ili 67 54 *58 31 52 128 128 69 180 *65 54 Total 1,889 1,815 2,833 3,076 3,378 2,614 2,498 4,177 4,822 2,741 1,869 1,697 Mean 60.9 60.5 91.4 99.2 121 84.3 83.3 135 161 88.4 60.3 56.6 Cfsm 1.56 1.55 2.34 2.54 3.10 2.16 2.14 3.46 4.13 2.27 1.55 1.45 In. 1.80 1.73 2.70 2.93 3.22 2.49 2.38 3.98 4.60 2.61 1.78 1.62 Ac-ft 3,750 3,600 5,620 6,100 6,700 5,180 4,950 8,280 9,560 5,440 3,710 3,370 Calendar year 1957: Max 170 Mln 35 Mean 84.4 Cfsm 2.16 In. 29.38 Ac-ft 61,120 Water year 1957-58: Max 190 Mln 45 Mean 91.5 Cfsm 2.35 In. 31.85 Ac-ft 66,260 * Discharge measurement made on this day. 56 DESCHUTES RIVER BASIN

565. Deschutes River below Wickiup Reservoir, near Lapine, Oreg.

Location. Lat 43°41'20", long 121°41'00", near line between sees. 7 and 8, T. 22 S., R. 9 E., on left bank 2,000 ft downstream from Wickiup Dam and 9 miles west of Lapine. Drainage area. 483 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available. June 1938 to September 1958. Monthly discharge only June 1938, pub lished in WSP 1313. Gage. Water-stage recorder. Datum of gage is 4,257.41 ft above mean sea level (levels by Bureau of Reclamation). Average discharge. 20 years, 753 cfs (545,100 acre-ft per year). Extremes.--Maximum discharge during year, 2,010 cfs Aug. 1, 2 (gage height, 7.31 ft); min imum, 7 cfs Oct. 19; minimum daily, 82 cfs Oct. 25-27. 1938-58: Maximum discharge, 2,280 cfs July 28 to Aug. 1, 1956 (gage height, 7.92 ft); minimum, 6 cfs Oct. 20, 1948 (gage height, 0.56 ft), when gate was closed for outlet inspection and repair; minimum daily, 10 cfs Jan. 17, 1952. Remarks. Records good except those below 120 cfs, which are fair. Flow regulated by Crane Prairie Reservoir, and since Dec. 24, 1942, by Wickiup Reservoir (see p. 60). Some leakage from Crane Prairie and Wickiup Reservoirs does not pass station. Some spill bypassed station in 1955. Revisions (water years).--WSP 1448: 1944{m), 1947-51(m).

Rating tables, water year 1957-58 (gage height, In Feet, and discharge, in cubic feet per second) (Backwater from moss or debris Sept. 16-30) Oct. 2o to Sept. 30 2.3 23O 1.6 73 3.0 440 2.0 150 4.0 740 3.0 420 6.0 1,450 4.0 720 6.0 1,420 7.4 2,050

Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,110 87 92 101 114 558 143 1,040 1,220 1,540 1,990 1.710 2 1,040 87 94 101 112 558 T43 1,060 1,020 1,450 2,010 1,690 3 962 87 94 101 112 558 148 1,240 831 1,430 2,000 1,690 4 952 87 95 101 114 543 280 1,300 852 1,490 1,960 1,690 5 952 87 94 101 110 531 507 1,300 852 1,540 1,930 1,690 6 952 87 94 *103 110 531 495 1,300 747 1,620 1,910 1,610 7 854 *87 94 103 110 510 483 1,300 690 1,700 1,890 1,570 8 62O 87 94 104 108 495 483 1,230 693 1,700 1,880 1,570 9 455 88 94 106 TTo 495 483 1,190 *684 1,700 1,840 1,570 10 452 88 94 104 *114 495 486 1,220 630 *1,700 1,840 1,570 11 452 88 94 104 114 *495 486 1,290 609 1,710 1,840 1,570 12 452 88 95 104 114 501 486 1,300 6T2 1,740 1,830 1,570 13 455 88 95 1O6 207 516 486 1,310 618 1,820 1,830 1,500 14 449 90 95 106 327 534 *489 1,310 747 1,880 1,830 1,410 15 440 90 95 108 555 534 489 1,320 915 1,900 1,830 1,330 16 440 90 97 108 714 537 498 1,420 1,100 1,920 1,830 1,300 17 440 90 97 108 642 537 519 1,440 1,280 1,920 1,830 1,270 18 443 90 97 108 642 537 525 1,450 1,520 1,910 1,830 *1,190 19 239 92"92 99 108 588 332 540 1,450 1,680 1,910 1,820 1,200 20 408 99 108 510 157 549 1,450 1,770 1,910 1,820 1,200 21 417 92 99 108 414 148 549 1,440 1,770 1,910 1,820 1,200 22 390 92 97 108 408 148 558 1,530 1,770 1,910 *1,820 1,200 23 393 92 97 108 423 148 564 1,560 1,770 1,910 1,820 1,210 24 212 92 97 108 447 148 549 1,460 1,540 1,920 1,820 1,190 25 82 92 97 108 522 141 534 1,440 1,410 1,930 1,820 1,120 26 82 92 99 108 561 137 585 1,380 1,420 1,980 1,820 1,120 27 82 92 99 110 561 T57 666 1,340 1,420 1,970 1,810 1,120 28 83 92 101 114 561 139 666 1,280 1,500 1,960 1,810 1,120 29 83 92 TOT 118 139 792 1,210 1,580 1,960 1,810 1,120 30 85 92 101 TT4 139 945 1,210 1,580 1,960 1,810 1,120 31 a? 101 114 141 1,220 1,960 1,800 Total 14,563 2,690 2,991 3,311 9,424 11,519 15,126 40,990 34,830 55,840 57,500 41,420 Mean 470 90.0 96.5 107 337 372 504 1,322 1,161 1,801 1,855 1,381 Ac-ft 28,890 5,340 5,930 6,570 18,690 22,850 30,000 81,300 69,080 110,800 114,000 82,160 Calendar year 1957: Max 2,090 Min 82 Mean 940 Ac-ft 680,400 Water year 1957-58: Max 2,010 Min 82 Mean 795 Ac-ft 575,600 Discharge measurement made on this day. DESCHUTES RIVER BASIN 57

575. Fall River near Lapine, Oreg.

Location. Lat 43°4?i50", long 121°34'20", in SE£ sec. 31, T. 20 S., R. 10 E., on left bank 50 ft downstream from pond spillway at State fish hatchery and 9 miles northwest of Lapine. Drainage area. 45.1 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available. July 1938 to September 1958. Records for May to September 1912 at site 3 miles downstream not equivalent owing to difference in drainage area. Gage. Water-stage recorder. Altitude of gage is 4,220 ft (by barometer). Average discharge. 20 years, 155 cfs (112,200 acre-ft per year). Extremes. Maximum discharge during year, 210 cfs July 24 (gage height, 1.73 ft); mini mum daily, 156 cfs Oct. 27-31. 1938-58: Maximum discharge, 250 cfs July 28, 1952 (gage height, 1.94 ft); mini mum, 68 cfs Apr. 6, 1942. Remarks. Records good except those for periods of no gage-height record, which are fair. Water diverted only to ponds at fish hatchery 50 ft above station, from which water returns to river above station. Momentary extremes are caused by operation of fish hatchery. Revisions (water years). WSP 984: 1938-42(M,m).

Rating table, water year, 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.4 149 1.7 204 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 181 T55"158 169 163 165 170 183 180 191 196 178 185 2 1ST TeT 163 166 170 185 181 T5T W ITS 185 3 180 158 167 163 166 171 185 182 193 196 178 183 4 180 158 167 163 166 171 185 183 193 196 178 183 5 178 160 *167 163 166 171 185 184 193 194 178 181 6 178 162 167 163 166 171 185 185 194 194 180 181 7 176 163 167 163 166 171 183 186 194 194 180 181 8 176 165 167 163 167 171 183 188 196 *194 181 181 9 174 165 165 163 167 T69~169 181 189 196 194 181 180 10 174 167 165 163 167 181 190 196 194 183 180 11 172 167 165 163 167 169 *181 191 *196 194 185 180 12 171 171 163 163 167 169 181 192 196 193 *187 180 13 171 172 T63 163 167 169 181 193 194 193 187 180 14 169 T7? 163 163 168 169 180 193 194 191 187 180 15 169 172 163 163 168 169 180 193 194 191 187 178 16 169 172 163 163 168 169 178 193 194 189 187 176 17 167 172 163 163 168 169 178 193 196 189 187 176 18 165 171 163 163 168 169 176 193 196 189 189"189 174 19 165 171 165 163 168 169 174 193 198 187 174 20 163 171 165 163 169 171 172 193 T55 187 189 172 21 163 171 163 164 169 172 172 193 198 185 189 172 22 162 171 163 164 169 172 172 194 198 185 189 172 23 162 171 163 164 169 174 171 19T 198 183 189 171 24 160 171 163 164 169 174 rn: 194 198 181 189 rn: 25 160 171 165 164 169 176 171 194 198 181 189 171 26 158 171 165 164 170 176 172 194 198 180 187 171 27 156 169 163 165 rfo 178 174 193 196 180 187 171 28 156 169 163 165 170 180 178 193 196 180 187 171 29 156 169 163 165 - 180 178 191 196 178 187 171 30 156 169 163 165 178 191 196 178 187 171 31 156 163 165 TaT1B1 193 178 187 Tota] 5,204 5,027 5,101 5,069 4,695 5,340 5,354 5,899 5,865 5,840 5,736 5,302 "Mean 168 168 165 164 168 172 178 190 196 188 185 177 Ac-ft 10,320 9,970 10,120 10,050 9,310 10,590 10,620 11,700 11,630 11,580 11,380 10,520 Calendar year 1957: Max 204 Mln 156 Mean 186 Ac-ft 134,600 Water year 1957-58: Max 198 Mln 156 Mean 177 Ac-ft 127,800 * Discharge measurement made on this day. Note. No gage-height record Jan. 18 to Mar. 5, May 1-12; discharge interpolated.

534540 O - 60 - 5 58 DESCHUTES RIVER BASIN

600. Crescent Creek at Crescent Lake, near Crescent, Oreg.

Location. Lat 43°30'00", long 121° 58' 20", in SE£SW£ sec. 11, T. 24 S., R. 6 E., on left bank 400 ft downstream from Crescent Lake dam, three-quarters of a mile south of town of Crescent Lake, and 14 miles west of Crescent. Drainage area. 60.7 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available.--January to September 1911 (gage heights and discharge measurements only), January 1912 to July 1915, July to September 1927, May 1928 to September 1958. Published as Crescent Lake outlet near Crescent January 1911 to September 1912, and as Crescent Creek at outlet of Crescent Lake, near Crescent October 1913 to July 1915. Gage. Water-stage recorder and since Sept. 11, 1956, Parshall flume. Datum of gage is 4,819.96 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Jan. 11, 1911, to July 31, 1915, staff gages near present site at different daturas. July 19, 1927, to June 1936 water-stage recorder near present site at different datum. June 1936, to July 14, 1955, water-stage recorder and Parshall flume at site 100 ft upstream at datum 6.76 ft higher. July 15, 1955, to Sept. 10, 1956, water-stage recorder at site 150 ft downstream at different datum. Average discharge. 32 years (1912-14, 1928-58), 56.4 cfs (40,830 acre-ft per year). Extremes. Maximum discharge during year, 296 cfs July 9 (gage height, 3.01 ft); minimum, 5.0 cfs Nov. 8. 1912-15, 1927-58: Maximum discharge, 313 cfs July 9, 1929, Aug. 9, 1936; no flow at times. Remarks. Records good. Plow regulated since 1922 to Crescent Lake (see p. 60). No diversion above station. Revisions. WSP 1218: Drainage area.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 0.3 8.0 1.5 .6 21 2.0 148 1.0 46 3.0 295 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 31 21 11 11 12 12 12 68 74 280 289 262 Z 31 rt 11 IT 12 12 12 68 75 278 288 260 5 31 21 11 11 12 12 12 68 139 278 288 259 4 28 21 11 11 12 12 12 68 220 278 286 259 5 31 21 11 11 12 12 12 68 222 278 284 258 6 31 21 11 11 12 12 12 68 222 278 284 258 7 31 21 11 11 12 12 12 68 222 277 283 258 8 31 *17 11 11 12 12 12 68 222 *284 283 256 9 31 11 11 11 12 12 12 *68 222 295 283 256 10 31 TT 11 11 12 12 12 68 222 295 283 256 11 31 11 11 11 12 12 12 68 222 295 282 254 12 31 11 11 11 12 12 12 68 222 295 282 254 13 31 11 11 11 12 12 12 68 *222 294 280 254 14 31 11 11 11 12 12 12 68 222 294 280 254 15 31 11 11 11 12 12 12 68 222 292 278 253 16 31 11 11 11 12 12 12 68 222 292 277 203 17 31 11 11 11 12 12 12 68 222 290 276 113 18 30 11 11 11 12 12 12 69 220 290 276 113 19 30 11 11 12 12 12 12 69 220 290 274 88 20 30 11 11 12 12 12 12 69 220 289 274 Z° 21 30 11 11 12 12 12 12 69 220 289 272 70 ZZ 30 11 11 12 12 12 12 69 220 289 271 70 23 30 11 11 12 12 12 12 70 220 288 271 70 24 30 11 11 12 12 12 12 70 222 288 270 71 25 30 11 11 12 12 12 12 70 222 286 268 71 26 30 11 11 12 12 12 12 70 222 286 266 71 27 30 11 11 12 12 12 12 71 222 284 266 72 28 30 11 11 12 12 12 12 71 223 284 265 72 29 25 11 11 12 12 12 71 248 283 264 72 30 21 11 11 12 12 38 72 280 283 264oe . 72 31 21 11 12 12 11 286 264 Total 921 406 341 354 336 372 386 2,139 6,353 8,888 8,571 5,149 Mean 29.7 13.5 11.0 11.4 12.0 12.0 12.9 69.0 212 287 276 172 Ac-ft 1,830 805 676 702 666 738 766 4,240 12,600 17,630 17 , 000 10,210 Calendar year 1957: Max 268 Min 11 Mean 123 Ac-ft 89,220 Water year 1957-58: Max 295 Min 11 Mean 93.7 Ac-ft 67,860 * Discharge measurement made on this day. DESCHUTES RIVER BASIN 59

630. Little Deschutes River near Laplne, Oreg.

Location. Lat 43°41'30", long ,121°30'10", In SW£SW£ sec. 2, T. 22 S., R. 10 E., on right bank just downstream from bridge at former town of Rosland, l£ miles north of Laplne. Drainage area. 859 sq ml, hydrologlc drainage boundary uncertain owing to ground-water exchange. Records available.--September 1910 to January 1911, March, April, August 1911, March to September 1912, June to October 1913, June to November 1918, August to October 1920, May 1924 to September 1958. Monthly discharge only for some periods, published In WSP 1318. Published as Deschutes River near Laplne 1910-12 and as East Fork near Laplne 1913-20. ' .--Water-stage recorder. Datum of gage Is 4,192.81 ft above mean sea level, datum of .."929. Sept.-l, 1910, to Aug. 31, 1911, staff gage at present site at different datum. Mar. 1 to Sept. 30, 1912, staff gage at site l£ miles downstream at different datum. June 1, 1913, to Sept. 28, 1928, staff gage and Sept. 29, 1928, to Sept. 30, 1931, water-stage recorder, at present site at different daturas. Average discharge. 34 years (1924-58), 201 cfs (145,500 acre-ft per year). Extremes. Maximum discharge during year, 733 cfs June 7, 8 (gage height, 6.81 ft); minimum, 82 cfs Nov. 30, but may have been less during periods of Ice effect. 1910-13 1918, 1920, 1924-58: Maximum discharge, 1,320 cfs June 13, 1950, May 9, 1956 (gage height, 7.25 ft); minimum, 8 cfs Sept. 2, 3, 1931 (gage height, 0.71 ft). Remarks.--Records good except those for periods of Ice effect, which are poor. Flow regu lated since 1922 by Crescent Lake (see following page). Diversions for Irrigation of 13,700 acres above station. Revisions (water years). WSP 1218: 1950.

Rating table, water year 1957-58, except periods of Ice effect height. In feet, and discharge, In cubic feet per second) (Shifting-control method used Jan. 19 to Apr. 27) 2.1 5.0 408 3.0 164 6.0 555 4.0 278 6.8 730 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 286 101 b90 155 218 411 250 453 567 421 319 277 2 199 100 t5B"b85 151 196 5S3 244 430 562 450 322 277 3 157 101 140 185 371 246 436 561 466 331 274 4 144 100 b85 b!30 177 355 234 472 558 46T 348 276 5 148 99 b90 b!20 175 333 222 477 572 439 549 274 6 146 98 b95 bl!5 Tsz"174 323 216 488 634 423 338 274 7 146 101 104 bllO 302 221 *504 715 412 329 272 8 142 102 blOO bllO" 198 290 218 519 718 *407 323 272 9 138 107 b95 b!20 209 284 214 536 705 40O 319 279 10 134 96 b90 b!30 217 286 215 538 694 391 314 283 11 131 95 b90 142 209 277 232 540 666 395 310 277 12 128 101 b90 140 220 264 266 546 630 390 307 274 13 128 *119 b95 135 235 261 285 562 586 384 307 274 14 132 177 blOO 140 224 259 *306 590 560 377 306 282 15 133 206 110 134 240 253 323 598 542 372 301 294 16 128 171 113 143 333 247 340 592 516 368 297 29O 17 123 132 123 158 446 241 368 570 492 366 297 282 16 119 115 126 164 512 *236 407 552 471 379 298 *211 19 111 bllO 120 153 540 230 459 538 453 404 298 178 20 108 blOO 136 b!40 548 rsi 510 528 456 415 300 158 21 107 blOO 241 b!35 514 240 531 536 472 398 298 133 22 106 blOO 252 b!30 480 256 552 552 500 376 295 131 23 105 b!05 130 b!30 456 265 604 582 501 366 292 131 24 104 108 165 b!35 452 264 630 616 512 359 288 131 25 107 107 156 138 496 270 152? 638 543 354 286 127 26 110 106 178 139 536 268 596 644 562 350 279 126 27 109 blOO 194 *135 532 249 567 654 550 351 270 124 28 107 b95 183 141 478 246 534 655 502 342 274 123 29 104 b90 210 180 - 246 501 *626 454 331 278 122 30 102 b85 206 222 250 474 596 428 331 273 121 31 To? 173 241 250 584 328 273 Total 4,044 3,327 4,170 4,456 9,382 8,642 11,387 17 , 157 16,683 12,007 9,419 6,547 Mean 130 111 135 144 335 279 380 553 556 387 304 218 Afrtft 8,020 6,600 8,270 8,840 18,610 17 , 140 22,590 34,030 33,090 23,820 18,680 12,990 Calendar year 1957: Max 702 Mln 85 Mean 298 Ac-ft 215,700 Water year 1957-58: Max 718 Mln 85 Mean 294 Ac-ft 212,700 * Discharge measurement made on this day. b Stage-discharge relation affected by Ice. 60 DESCHUTES RIVER BASIN

Reservoirs in Deschutes River basin above Bend, Oreg.

Crane Prairie Reservoir. Lat 43°45'20", long 121°46'50", on control structure at dam on Deschutes River in NW£ sec.'16, T. 21 S., R. 8 E., 15 miles northwest of Lapine. Drain age area, 254 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available, November 1922 to September 1958. Staff gage read daily Oct. 1 to Nov. 10, May 8 to Sept. 30, occasional readings Nov. 16 to May 4. Datum of gage is 4,400.0 ft above mean sea level (levels by Bureau of Reclamation). Gage read ings have been reduced to elevations above mean sea level. Maximum contents observed during year, 57,090 acre-ft Apr. 26 (elevation, 4,445.35 ft); minimum observed, 20,300 acre-ft Sept. 30 (elevation, 4,436.80 ft). Maximum contents observed during period 1922-58, 60,500 acre-ft June 5-7, 1943 (elevation, 4,446.0 ft); no usable contents at times. Reservoir is formed by earth dam completed by North Canal Co. in 1922; gates were first closed Nov. 22, 1922; reconstructed as rock-faced earth dam with concrete con trol works by Bureau of Reclamation in 1939-40. Capacity, 55,340 acre-ft between ele vations 4,424.0 (lip of fish screen structure) and 4,445.0 ft (crest of spillway). Natural flow passing through reservoir when outlet gates are open prevents withdrawal of storage to elevation of sill of gates. Water used for irrigation near Bend and Redmond. Revisions (water years).--WSP 1218: Drainage area. WSP 1318: 1925, 1940-41, 1950. WSP 1448:1925(M,m), 1940(m), 1950(m). Wickiup Reservoir. Lat 43°41 I 10", long 121°41'10", in gate chamber structure at dam on Deschutes River in NE£ sec. 7, T. 22 S., R. 9 E., 9 miles west of Lapine. Drainage area, 482 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available, December 1942, when storage began, to September 1958. Tape gage read daily. Datum of gage is at mean sea level (levels by Bureau of Reclamation). Prior to Jan. 15, 1945, staff gages at nearby sites at same datum. Maximum contents observed during year, 200,400 acre-ft Apr. 19, 22 (elevation, 4,337.70 ft); minimum observed, 61,720 acre-ft Oct. 1, 2 (elevation, 4.315.17 ft). Maximum contents observed' during period 1942-58, 201,500 acre-ft May 8, 1956 (elevation, 4,337.80 ft); minimum observed since reservoir first filled in March 1949, 523 acre-ft Oct. 18, 1952 (ele vation, 4,270.86 ft). Reservoir is formed by rock-faced, earth-fill dam completed by Bureau of Reclama tion in August 1949. Capacity, 182,100 acre-ft between elevations 4,265.0 (no stor age) and 4,336.0 ft (crest of spillway, with earth soft plug to elevation 4.339..0 ft). Water surface probably cannot be lowered below elevation 4,265.0 ft due to natural flow through reservoir. Sill of trashrack structure elevation, 4,259.75 ft. Water is diverted from Deschutes River at Bend and is used for irrigation of lands near Madras. Daily elevations and capacity table furnished by Bureau of Reclamation. Crescent Lake. Lat 43°30'00", long 121°58'20", in SW£ sec. 11, T. 24 S., R. 6 E., on outlet works of new dam three-quarters of a mile south of town of Crescent Lake and 14 miles west of Crescent. Drainage area, 60.7 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available, August 1922 to September 1958. Wire-weight gage read 1 to 4 times a month. Datum of gage is at mean sea level (levels by Bureau of Reclamation). Prior to Oct. 1, 1956, staff gage at nearby site at datum 4,825.16 ft above mean sea level; Oct. 1, 1956, to Oct. 17, 1957, staff gage at present site and datum. Maximum contents observed during year, 76,400 acre-ft June 3 (elevation, 4,842.84 ft); minimum observed, 43,730 acre-ft Oct. 18 (elevation, 4,834.24 ft). Maximum contents observed during period 1922-58; 79,970 acre-ft Mar. 8, 1957 (elevation, 4,843.76 ft); minimum observed, 9,640 acre-ft Oct. 21, 1931 (eleva tion, 4,827.91 ft). Reservoir originally formed by dam of earth and logs completed in 1922, recon structed as earth-fill dam in 1956. Capacity. 117,200 acre-ft between elevations 4,821.5 (sill of outlet gate) and 4,853.0 ft (crest of spillway). Daad storage not known; records given herein represent usable contents. Water surface probably cannot be lowered below elevation 4,823.4 ft due to natural flow through reservoir. Water is diverted from Deschutes River at Bend by Deschutes County Municipal Improvement Dis trict Canal for Irrigation near Tumalo. Revisions (water years). WSP 1218: Drainage area. WSP 1318: 1922-31. WSP 1448: 1923-31(M,m). Month-end elevation and contents, water year October 1957 to September 1958 Change in Change in Usable Change in Elevation Contents contents Elevation Contents contents Elevation contents contents (acre- (acre- (acre- (acre- (acre- Date feet)* (acre- (feet)t (feet)* feet) feet) feet) feet) feet) feet) Crane Prairie Reservoir Wickiup Reservoir Crescent Lake Sept. 30...... 4,437.14 21,530 ,315.15 61,670 4,833.36 40,490 Oct. 31...... 4,439.36 30,060 +8,530 ,322.57 85,280 +23,610 844,700 +4,210 Nov. 30...... 4.441.28 38 , 080 +8,020 ,328.29 115,800 +30,520 848,600 +3,900 Dec. 31...... 346,500 +8,420 ,332.40 147,500 +31,700 4,837.24 54,940 +6,340 Calendar year 1957 - - -3,340 - - -36,600 - - -17,430 Jan. 31. . . aSO , 600 +4 , 100 ,335.38 175,700 +28 , 200 4,838.60 60,110 +5,170 Feb. 28. .. a52,700 +2 , 100 ,336.55 187,900 +12,200 4,839.60 63,920 +3,810 Mar. 31. .. 354,900 +2,200 ,337.38 196,800 +8, 900 4,840.20 66,230 +2,310 Apr. 30. .. 4,445.28 56,740 +1,840 ,337.56 198,800 +2,000 4,840.93 69,020 +2,790 May 31. .. 4,444.06 50,760 -5,980 ,334.96 171,500 -27,300 375,600 +6,580 June 30 . 4,442.55 43,720 -7,040 ,334.33 165,300 -6,200 874, 200 -1,400 July 31. 4,440.96 36,700 -7,020 ,329.27 122,600 -42,700 a62,900 -11,300 Aug. 31. .. 4,439.83 31,960 -4,740 ,323.43 88,930 -33,670 850, 800 -12,100 Sept. 30. .. 4,436.80 20,300 -11,660 ,323.03 87,160 -1,770 4,834.80 45,810 -4,990 Water year 1958. .... - - -1,230 - - +25,490 - - +5,320 usually read 6 to 8 a.m. or 6 p.m. t Gage read at 8 a.m. * Gsge read at Irregular times. a No gage-height record; contents interpolated. DESCHOTES RIVER BASIN 61

645. Deschutes River at Benham Falls, near Bend, Oreg.

Location. Lat 43°56'20", long 121°24'40", in SE£ sec. 9, T. 19 S., R. 11 E., on left bank 150 ft upstream from head of Benham Falls, \\ miles downstream from dam site for pro posed Benham Falls Reservoir, and 10 miles southwest of Bend. Drainage area. 1,759 sq mi. Records available.--April 1906 to September 1913, April to September 1914, August to December 1920, April to September 1921, February 1924 to September 1958. Monthly dis charge only for some periods, published in WSP 1318. Published as "at West's ranch, near Lava" April 1906 to February 1909, April to September 1914. Records for January 1905 to March 1906 and October 1913 to September 1914 published under present name in WSP 370 and 394 have been found to be unreliable and should not be used. . Water-stage recorder. Datum of gage is 4,143.10 ft above mean sea level (Bureau of eclamation bench mark). Apr. 1, 1906, to Feb. 28, 1909, and Apr. 1 to Sept. 30 1914. staff gage at site 8 miles upstream at various daturas. Mar. 1, 1909, to Sept. 30, 1913, and Aug. 27, 1920, to Sept. 30, 1921, staff gages at two different sites within 600 ft upstream from present site at various datums. Feb. 12, 1924, to Nov. 12, 1947, water- stage recorder at present site at datum 1.00 ft higher. Average discharge.--41 years (1906-13, 1924-48), 1,404 cfs (1,016,000 acre-ft per year). Extremes.--Maximum discharge during year, 2,950 cfs June 24, 25 (gage height, 4.82 ft); minimum, 794 cfs Nov. 30 (gage height, 1.13 ft). 1906-14, 1920-21, 1924-58: Maximum discharge, 5,000 cfs (estimated) Nov. 27, 1909 (gage height not determined); minimum, 448 cfs sometime during period Jan. 11 to Feb. 3, 1950 (from recorded range in stage); minimum daily, 480 cfs Feb. 12, 1948. Remarks. Records good except those for periods of no gage-height record, which are fair. Flow regulated since 1922 by Crane Prairie Reservoir and Crescent Lake, and since 1942 by Wickiup Reservoir (see preceding page). Diversions for irrigation of over 14,000 acres above station. Revisions. See Records available.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.1 780 2.0 1,200 4.8 2,940 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2,010 848 830 900 1,030 1,760 1,120 2.020 2,500 2,740 2,870 2,610 2 2,000 838 848 910 1,020 1,766 1,126 2,160 2,500 2,690 2,880 2,380 3 1,910 838 825 920 1,000 1,650 1,120 2,150 2,400 2,610 2,900 2,550 4 1,770 843 820 910 990 1,640 1,120 2,200 2,200 2,580 2,906 2,530 5 1,740 843 *534~ 900 987 1,600 1,260 2,300 2,150 77550" 2,900 2,530 6 1,720 838 848 890 987 1,560 1,420 2,350 2,150 2,620 2,870 2,520 7 1,720 834 870 880 996 1,540 1,410 2,400 2,100 2,650 2,850 2,510 8 1,610 838 861 880 1,020 1,490 1,410 2,380 2,050 2,720 2,810 2,450 9 1,400 848 888 £§6"870 1,030 1,460 1,400 2,340 *2,030 2,730 2,790 2,460 10 1,240 856 897 1,050 1,460 1,400 2,300 2,060 *2,730 2,740 2,450 11 1,230 856 874 900 1,050 1,450 1,400 2,350 2,000 2,720 2,720 2,440 12 1,220 852 866 900 1,100 1,440 1,410 2,400 1,960 2,720 2,720 2,440 13 1,220 874 866 900 1,100 1,440 1,430 2,450 1,940 2,740 2,700 2,450 14 1,220 897 874 900 1,160 1,460 *1,440 2,500 1,910 2,780 2,700 2,430 15 1,210 924 879 900 1,330 1,460 1,460 2,500 1,990 2,850 2,700 2,330 16 1,180 964 884 910 1,700 1,460 1,470 2,500 2,130 2,880 2,690 2,280 17 1,180 956 888 910 1,850 1,450 1,490 2,600 2,290 2,900 2,690 2,230 18 1,180 915 897 920 *1,850 1,450 1,510 2,600 2,420 2,950 2,680 2,200 19 1,170 884 928 920 1,880 1,440 1,540 2,600 2,600 2^910 2,680 2,110 20 1,040 874 974 910 1,656 1,250 1,580 2,700 2,740 2,900 2,680 2,050 21 1,140 874 996 910 1,780 1,120 1,600 2,650 2,850 2,900 2,690 2,000 22 1,180 856 1.050 900 1,690 1,100 1,640 2,600 2,880 2,900 2,680 2,000 23 1,140 856 1,010 900 1,650 1,120 1,680 2,600 2,900 2,900 2,670 *1,970 24 1,140 861 996 900 1,640 1,120 1,700 2,650 2,940 2,880 2,670 1,970 25 1,030 861 978 900 1,660 1,120 1,720 2,700 2, 866 2,880 2,650 1,950 26 884 861 982 910 1,710 1,120 1,740 2.750 2,670 2,870 2,650 1,900 27 *870 856 982 910 1,750 1,120 1,780 2, WO 2,650 2,900 2,640 1,850 28 866 856 990 920 1,760 1,120 1,800 2,650 2,650 2,900 2.620 1,850 29 861 820 1,000 940 1,110 1,860 2,600 2,680 2,900 2,620 1,840 30 807 980 980 1,120 1.940 2,550 2,750 2, 890 2,620 1 820 31 j«5Zoc^ 940 1.010 1,120 2,500 2, 880 2,620 Total 39,789 25,928 28,335 28,190 38,620 42,450 44,970 76,690 71,950 86,790 84,600 67,300 Mean 1,284 864 914 909 1,379 1,369 1,499 2,474 2,398 2,800 2,729 2,243 Ac-ft 78,920 51,430 56,200 55,910 76,600 84,200 89,200 152,100 142,700 172,100 167,800 133,500 Calendar year 1957 : Max 2,990 Min 807 Mean 1,877 Ao-ft 1,359,000 Water year 1957-58 : Max 2,940 Min 807 Mean 1,741 Ac-ft 1,261,000 * Discharge measurement made on this day. Note.--No gage-height record Dec. 28 to Feb. 4, Apr. 18 to June 8, Aug. 17, 18, Sept. 21, 22, 25-30} discharge estimated on basis of records for nearby stations. 62 DESCHUTES RIVER BASIN

660. Deschutes River below Lava Island, near Bend, Oreg.

Location. Lat 44°00'00", long 121 "22'30", in SW£ sec. 23, T. 18 S., R. 11 E. , on right bank three-quarters of a mile downstream from Lava Island, l|- miles downstream from intake of Arnold Canal, and 5 miles southwest of Bend. Drainage area.--1.829 sq mi. Records available. March 1926 to September 1958. Gage.--Water-stage recorder. Altitude of gage is 3,825 ft (by barometer). Prior to May 4, 1927, at site a quarter of a mile upstream at different datum. May 4, 1927, to Nov. 11, 1947, at present site at datum 1.00 ft higher. Average discharge.--32 years, 1,219 cfs (882,500 acre-ft per year). Extremes.--Maximum discharge during year, 2,730 cfs June 25 (gage height, 3.59 ft); mini mum, 709 cfs Nov. 30 (gage height, 1.36 ft). 1926-58: Maximum discharge, 2,940 cfs May 10, 1956 (gage height, 3.78 ft); minimum, 416 cfs Jan. 18, 1950 (gage height, 0.79 ft). Remarks. Records good except those for period of no gage-height record, which are poor. Flow regulated by Crescent Lake and Crane Prairie Reservoir, and since 1942, by Wickiup Reservoir (see p. 60). Arnold Canal diverts water above station for irriga tion (see following page).

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) (Backwater from moss and debris Sept. 17-30) 1.3 670 2.0 1,190 3.0 2,120 3.6 2,740 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1.790 735 722 807 a940 1.620 996 1.870 2,360 2,450 2,560 2.560 2 1,790 761 728 828 926 1,610 988 1,960 2,340 2,410 2,560 2,340 3 1,730 768 728 835 912 1,560 988 1,960 2,260 2,320 2,590 2,510 4 1,600 774 722 821 905 1,520 988 2,030 2,020 2.270 2,6OO 2,290 5 1,550 774 728 807 898 1,490 1,080 2,140 1,960 2,270 2,590 2,290 6 1,530 774 748 780 877 1,420 1,270 2,180 1,960 2,310 2,560 2,290 7 1,530 774 774 774 856 1,4OO 1,280 2,190 1,890 *2,340 2,540 2,290 8 1,450 780 780 768 863 1,370 1,280 *2,210 1,820 2,4OO 2,520 2,250 9 1,270 787 787 774 877 1,330 1,270 2,220 1,850 2,420 2,500 2,240 10 1,080 787 807 780 919 *1,320 1,250 2,160 1,890 2,420 2,470 2,230 11 1,060 800 794 800 948 1,330 1,240 2,160 1,850 2,420 2,440 2,230 12 1,050 794 787 821 956 1,330 1,250 2,220 1,800 2,410 2,430 2,220 13 1,040 *807 780 821 988 1,330 1,270 2,270 1,780 2,420 2,420 2,220 14 1,040 821 780 800 1,OOO 1,330 1,290 2,290 1.760 2,450 2,420 2,180 15 1,O4O 835 787 780 1,110 1,340 1,320 2,290 1,800 2,500 2,420 2,110 16 1,030 877 787 787 1,360 1,340 1,320 2,310 1,930 2,550 2,410 2,060 17 1,O2O 877 794 800 1,650 1,340 1,350 2,360 2,050 2,580 2,410 1,970 18 1,000 856 800 849 1,680 1,330 1,3SO 2,430 2,150 2.610 2,410 1,940 19 996 821 821 856 1,710 1,330 1,410 2,460 2,300 2,610 2,410 1,880 20 912 814 856 a840 1.720 1,190 1,450 2,450 2,450 2,600 2,410 1,800 21 926 807 877 a830 1,680 1,020 1,490 2,430 2,560 2,600 2,410 1,760 22 1,010 800 870 a820 1,610 1.000 1,520 2,430 2,620 2,600 2,410 1,730 23 972 794 877 a8 20 1,550 1,000 1,530 2,430 2,640 2,590 2,410 1,720 24 964 794 856 a820 1,530 1,010 1,560 2,5OO 2,700 2,580 2,410 1,710 25 912 794 863 a810 1,530 1,010 1,580 2.550 2,670 2,550 2,400 *1,710

26 774 794 870 a800 1,550 1,010 1,600 2,510 2,490 2,550 2,390 1,680 27 748 787 870 a820 1,600 1,010 1,640 2,510 2,410 2,560 2,380 1,650 28 742 774 891 a840 1,620 1,000 1,710 2,480 2,380 2,590 2,370 1.640 29 735 742 898 a86O - 1,000 1,710 2,450 2,400 2,590 2,560 1,640 30 735 7.16 877 a880 1,000 1.750 2j 38O 2,440 2,580 2,370 1,640 31 735 849 a920 1,000 2,370 2,560 2,370 Total 34, 761 23,818 25,108 25,348 34,765 38,890 40,760 71,180 65,530 77,110 75,950 60,380 Mean 1,121 794 810 818 1,242 1,255 1,359 2,296 2,184 2,487 2,450 2,013 Ac-ft 68,950 47,240 49.8OO 50,280 68,960 77,140 80,850 141,200 130,000 152,900 150, 600 119,800 Calendar year 1957; Max 2,640 Mln 716 Mean 1,693 Ac-ft 1,226,000 Water year 1957-58: Max 2,700 Mln 716 Mean 1,572 Ac-ft 1,138,000 * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for station at Benham Palls. DESCHUTES RIVER BASIN 63

Diversions from Deschutes River near Bend, Oreg.

The following six canals, which are equipped with water-stage recorders, are the only diversions from Deschutes River between gaging stations at Benham Falls and below Bend. Arnold Canal diverts from right bank at head of Lava Island, in SVf£ sec. 27, T. 18 S., R. 11 E.; water used for irrigation southeast of Bend. Central Oregon Canal diverts from right bank in NE£ sec. 13, T. 18 S., R. 11 E.; water used for irrigation east of Bend. Beginning Oct. 1, 1932, record obtained upstream from intake of Pilot Butte Canal. Deschutes County Municipal Improvement District Canal diverts from left bank in NE£ sec. 32, T. 17 S., R. 12 E., at Bend; water stored In Crescent Lake for Tumalo project is diverted by this canal and supplements flow in Tumalo project feed canal for irrigation near Tumalo. North Unit Main Canal diverts water from right bank in NE£ sec. 29, T. 17 S., R. 12 E.; water used for irrigation near Madras. North and Swalley Canals divert from right bank in NE£ sec. 29, T. 17 S., R. 12 E.; water used for irrigation north of Bend', mostly near Redmond. Records of monthly discharge of these canals, published as a group, are available from October 1926 to September 1958; records for each canal published separately prior to 1926.

Diversions, In acre-feet, water year October 1957 to September 1958 Deschutes tfentral County Month Arnold Oregon Municipal North Unit North Swalley Total Canal Canal Improvement Main Canal Canal Canal District Canal 2,700 41,910 264 0 585 252 244 0 319 2,580

May...... 135,000 29 440 July ...... September ...... 5,830 30,610 7,930 35,140 28,760 6,320 114,600 Water year 1957-58. 41,710 213,000 31,820 276,600 200,000 41,830 -804,900 64 DESCHUTES RIVER BASIN

705. Deschutes River below Bend, Oreg.

Location. Lat 44°05 I 00", long 121°18'20", in SE£ sec. 20, T. 17 S., R. 12 E., on right bank half a mile downstream from North Canal and half a mile north of Bend city limits. Drainage area. 1,899 sq mi. Records available. October 1914 to September 1958. Gage. Water-stage recorder. Datum of gage is 3,503.96 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Oct. 1, 1931, at site 200 ft down stream at datum 1.00 ft higher. Average discharge. 44 years, 594 cfs (430,000 acre-ft per year). Extremes.--Maximum discharge during year, 1,950 cfs Feb. 19 (gage height, 3.93 ft); mini mum, 25 cfs July 17 (gage height, 1.03 ft). 1914-58: Maximum discharge, 2,500 cfs Mar. 31, 1918, Dec. 7, 1921 (gage height, 3.9 ft, present datum); maximum gage height, 4.46 ft Jan. 26, 1930, present datum (backwater from ice); minimum discharge, 1 cfs Aug. 25, 1930. Maximum discharge known near this site since 1905, 4,820 cfs Nov. 27, 1909. Remarks. Records good except those for periods of ice effect or no gage-height record, which are poor. Flow regulated by hydroelectric plant at Bend, since 1922 by Crescent Lake and Crane Prairie Reservoir, and since 1942, by Wickiup Reservoir (see p. 60). Six large canals (see preceding page) and several small ditches divert water above station for irrigation. Revisions (water years). WSP 1318: 1916-18(M), 1926(M), 1931(M).

Rating table, water year 1957-58, except period of ice effect (gage height, in feet, and discharge, in cubic feet per second) 1.3 65 2.5 630 1.5 115 3.0 1,010 1.7 190 4.0 2,030 2.0 325 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 405 742 686 834 962 1,160 1,000 217 284 307 67 190 2 477 786 700 858 946 ,2OO 850 226 489 289 76 162 3 489 786 700 858 922 ,370 514 182 574 194 115 129 4 411 794 728 850 906 ,480 508 212 399 104 150 136 5 489 770 742 842 906 ,44O 574 253 340 70 162 162 6 489 770 778 810 890 ,420 826 253 365 86 186 212 7 534 763 802 802 858 ,390 591 266 375 96 170 204 8 735 735 810 794 850 ,360 365 266 325 150 170 154 9 721 742 818 802 858 ,320 350 271 411 126 178 146 10 514 749 842 810 906 ,280 *350 143 508 115 178 140 11 502 749 810 850 922 ,280 294 126 477 88 143 136 12 489 756 786 874 946 ,320 199 115 411 72 129 162 13 483 810 714 866 1,010 ,320 186 \\5 335 72 107 289 14 489 826 423 802 1,040 ,330 186 126 244 79 107 387 15 477 842 423 756 1,190 ,340 154 122 190 91 107 455 16 465 890 435 770 1,480 ,330 136 122 *190 104 107 429 17 441 882 a445 802 1,740 ,330 110 143 154 118 107 335 18 435 858 a455 882 1,730 ,320 122 146 143 132 96 316 19 429 818 a380 *866 1,770 ,320 122 190 162 122 88 266 20 399 802 a360 842 1,760 ,200 129 150 190 110 88 199 21 447 802 a360 842 1,690 ,010 132 126 235 102 99 143 22 547 794 a355 818 1,600 ,000 146 122 186 93 99 115 23 502 714 340 554 1,550 ,010 143 129 204 93 99 122 24 495 470 467 365 1,540 ,020 150 186 341 83 88 178 25 453 354 580 355 1,530 986 170 199 483 76 91 *208 26 298 289 423 340 1,470 970 194 217 271 529 83 212 27 530 294 411 666 1,170 *970 226 244 166 110 79 170 28 749 b385 562 866 1,200 962 244 258 166 93 76 143 29 735 b420 938 922 - 954 199 25"3"276 174 96 99 140 30 749 b610 906 978 970 186 244 83 132 132 31 742 874 954 1,000 266 74 166 Total 16,120 21,002 19,053 24,230 34,342 37,362 9,356 5,920 9,036 3,957 3,642 6,152 Mean 520 700 615 782 1,226 1,205 312 191 301 128 117 205 Ac-ft 31,970 41,660 37,790 48,060 68,120 74,110 18,560 11,740 17,920 7,850 7,220 12,200 Calendar year 1957: Max 2,130 Mln 37 Mean 639 Ac-ft 462,800 Water year 1957-58: Max 1,770 Mln 67 Mean 521 Ac-ft 377,200 * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for station at Benham Palls adjusted for flow in intervening canals. b Stage-discharge relation affected by ice. DESCHUTES RIVER BASIN 65

730. Tumalo Creek near Bend, Oreg.

Location. Lat 44°05'20", long 121°22'20" ( near center of sec. 23, T. 17 S., R. 11 E., on left bank a quarter of a mile upstream from Tumalo feed canal, 3 miles upstream from mouth, and 4 miles northwest of Bend. Drainage area. 47.3 sq mi. Records available. October 1913 to December 1921, February, April to November 1922, March 1923 to September 1958. Published as "below Bend" 1949-50. Gage. Water-stage recorder. Datum of gage is 3,566.82 ft above mean sea level, datum of T929. Prior to Apr. 27, 1915, staff gage and Apr. 27, 1915, to Sept. 30, 1918, water- stage recorder or staff gage, at same site and datum. Average discharge. 40 years (1913-14, 1916-21, 1923-35, 1936-58), 104 cfs (75,290 acre- ft per year). Extremes. Maximum discharge during year, 498 cfs June 19; minimum daily, 54 cfs Nov. 2. IS13-58: Maximum discharge, 1,000 cfs about Jan. 6, 1923 (no flow in canal), from rating curve extended above 450 cfs; minimum daily, 25 cfs Jan. 3, 1924. Remarks. Records good except those for periods of ice effect or no gage-height record, which are poor. All records presented herein include flow in Columbia Southern Canal, which diverts 8 miles above station for Irrigation of lands near Tumalo. No flow in the canal Oct. 1-17, 20, 21, Nov. 3 to May 4, May 8. Crater Creek Canal diverts flow of tributaries of Soda Creek into head of Tumalo Creek. Revisions (water years). WSP 864: 1937. WSP 1218: Drainage area. WSP 1448: 1923(M), 1927-29(M), 1932(M), 1935-38(M), 1942(M).

Discharge, In cubic feet per second, water year October 1957 to September 195S" Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 73 59 58 b65 67 98 70 106 341 164 91 a72 2 76 54 a55"a55 b65 67 94 70 116 318 162 90 a68 3 73 64 64 *67 90 68 124 305 162 95 a68 4 70 64 b56 b64 66 88 68 *130 291 190 90 a66 5 70 67 b58 b64 _64 87 68 145 304 216 *80 a65 6 72 64 61 64 66 87 68 137 353 205 80 a64 7 73 64 104 b64 67 85 67 135 319 203 81 a64 e 70 62 a90 64 67 82 *67 156 305 185 80 a67 9 72 64 a80 64 66 *80 68 185 311 166 84 a71 10 73 66 67 66 67 78 70 194 *288 155 a83 a71 11 72 66 a65 66 67 78 72 214 265 *156 a82 a72 12 72 a65 *62 68 68 76 73 189 260 154 a78 73 13 92 a70 64 68 67 76 90 175 247 149 a76 19 14 80 a80 64 68 66 76 96 180 247 138 a72 68 15 68 a90 66 78 70 76 98 194 258 125 a72 71 16 57 a80 67 75 87 75 106 223 276 113 a72 69 17 55 73 66 80 92 73 123 250 301 120 a72 68 18 59 67 64 73 100 72 114 286 329 139 a71 65 19 55 a65 72 b73 92 72 112 306 348 123 71 65 20 68 a62 85 73 90 72 140 330 383 112 71 66 21 68 a 60 76 75 88 73 173 349 374 99 71 65 22 74 a60 66 b75 88 73 T52 370 365 97 69 67 23 72 62 b65 75 88 73 140 435 355 103 70 *66 24 68 62 67 73 100 72 126 453 334 99 70 64 25 75 61 66 70 114 72 120 393 293 102 68 64 26 73 60 72 70 104 70 116 396 275 101 68 64 27 70 b60 67 70 100 70 112 391 272 102 70 63 26 66 61 72 b70 96 70 100 379 210 104 69 59 29 64 b60 67 b70 - 70 102 344 191 107 76 58 30 64 57 68 67 70 104 329 179 101 a73 60 31 62 b66 68 72 392 98 a74 Total 2,156 1,949 2,111 2,149 2,241 2,400 2,953 8,006 8,897 4,250 2,369 1,992 Mean 69.5 65.0 68.1 69.3 80.0 77.4 98.4 258 . 297 137 76.4 66.4 Ac-ft 4,280 3,870 4,190 4,260 4,440 4,760 5,860 15,880 17,650 8,430 4,700 3,950 Calendar year 1957: Max 362 Min 54 Mean 99.3 Ac-ft 71,900 Water year 1957-58: Max 453 Min 54 Mean 114 Ac-ft 82,270 * Discharge measurement made on river station this day. a No river gage-height record; discharge estimated on basis of records for Squaw Creek near Sisters and Lake Creek near Sisters and unpublished records for Tumalo feed canal. b Stage-discharge relation affected by ice. DESCHUTES RIVER BASIN

750. Squaw Creek near Sisters, Oreg.

Location. Lat 44°13'50", long 121°34'20", in NWiNW£ sec. 32, T. 15 S., R. 10 E., on right bank 600 ft upstream from intake of McAllister ditch and 4 miles south of Sisters. Drainage area. 54.8 sq mi. Records available.--July 1906 to October 1918, June to August 1919, October 1919 to September 1920, May 1921 to September 1924 (no winter records), April 1925 to Septem ber 1958. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Altitude of gage is 3,490 ft (by barometer). July 1, 1906, to May 29, 1913, staff gage at site 800 ft downstream at different datum and below intake of McAllister ditch (records include flow in McAllister ditch) May 30, 1913 to Sept. 2, 1915, staff gage and Mar. 24, 1916, to Oct. 5, 1928, water-stage recorder, at site 100 ft downstream at different datum. Average discharge.--46 years (1906-18, 1919-20, 1925-58), 106 cfs (76,740 acre-ft per year). Extremes. Maximum discharge during year, 478 cfs June 22 (gage height, 2.57 ft); mini mum, 38 cfs Nov. 27, Dec. 3, but may have been less during periods of ice effect. 1906-58: .Maximum gage height, about 8.75 ft (over top of gage) Nov. 22, 1909, site and datum then in use (discharge not determined); maximum discharge since 1909, 1,130 cfs Dec. 2, 1941 (gage height, 3.33 ft); minimum, 19 cfs Dec. 6, 1922. Remarks. Records good except those for periods of ice effect or no gage-height record, which are poor. No regulation. A canal near mouth of Pole Creek, a tributary above station, diverts entire flow of that creek for irrigation of lands near Sisters. Revisions.--WSP 1218; Drainage area. Rating table, water year 1957-58, except periods of Ice effect (gage height, In feet, and discharge, In cubic feet per second) 1.0 2.0 260 1.2 2.5 450 1.5 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 68 52 b40 b68 61 98 52 95 334 221 150 110 2 75 52 42 b65 61 91 52 105 309 212 140 105 3 62 50 44 b64 59 85 *52 110 295 215 145 100 4 57 52 *42 b62 59 83 52 118 284 224 150 100 5 57 57 41 b60 57 79 52 118 284 239 145 100 6 57 54 61 b60 57 *79 51 112 338 245 140 100 7 54 50 b!68 *b60 *57 79 50 115 323 251 140 100 8 54 50 100 b58 57 75 50 132 326 239 *142 *100 9 57 50 73 b56 57 73 51 148 132 227 145 100 10 61 50 66 b55 55 66 52 158 295 212 140 100 11 56 48 62 54 57 66 52 165 281 221 140 100 12 57 52 59 57 70 64 52 *150 *270 *218 140 100 13 91 "56"73 56 52 62 62 56 138 251 £18 155 100 14 70 54 59 61 61 59 140 264 210 130 100 15 59 *52 52 91 75 59 61 152 270 200 150 95 16 56 52 52 68 112 59 66 179 284 180 150 90 17 54 56 51 81 125 57 85 212 320 190 125 90 18 54 56 48 73 138 57 83 236 362 200 120 90 19 54 50 70 71 ITS 57 83 264 390 190 120 90 20 54 48 93 64 112 57 128 278 410 170 120 90 21 52 46 71 61 105 57 148 295 434 160 120 85 22 59 50 64 b60 100 57 125 330 434 150 120 80 23 61 46 68 b60 100 56 108 414 434 160 120 80 24 59 46 64 61 132 56 98 438 418 170 120 80 25 68 46 68 59 138 56 91 374 390 165 120 75 26 61 45 70 57 115 54 89 370 346 160 120 70 27 56 b45 70 59 108 54 85 390 334 160 120 70 28 54 45 71 66 100 52 83 382 260 160 120 70 29 56 b42 70 73 - 5? 83 342 245 160 125 70 30 56 b40 b70 66 52 87 334 255 160 130 70 31 56 b70 62 52 390 155 120 Total 1,845 1,511 2,030 1,962 2,408 2,005 2,236 7,184 9,730 6,042 4,062 2,710 Mean 59.5 50.4 65.5 63.3 86.0 64.7 74.5 232 324 195 131 90.5 Ac-ft 3,660 3,000 4,030 3,890 4,780 3,980 4,440 14,250 19,300 11,980 8,060 5,580 Calendar year 1957: Max 298 Mln 40 Mean 94.7 Ac-ft 68,560 Water year 1957-58: Max 438 Mln 40 Mean 120 Ac-ft 86,750 Peak discharge (base, 30o cfs). May 24 (4 l.m.) 466 cfs (2.54 ft); June 22 (11 p.m.) 478 cfs (2.57 ft). Discharge measurement made on this day. b Stage-discharge relation affected by Ice. Note . No gage-height record July 14 to Aug. 7, Aug. 10 to Sept. 7, Sept. 8-27, 29, 30; dis charge estimated on basis of records for Tumalo Creek near Bend, Lake Creek near Sisters, and Littleile DeschutesDeschtes RiverRive near Laplne.a DESCHUTES RIVER BASIN 67

765. Deschutes River near Culver, Oreg.

Location. Lat 44°32'30", long 121°17'10", in SW£ sec. 10, T. 12 S., R. 12 E., on right bank 0.7 mile downstream from bridge on Cove-Grandview road, 2|- miles upstream from Crooked River, 4 miles northwest of Culver, and at mile 116.5. Drainage area. 2,723 sq mi. Records available. July 1952 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,755 ft above mean sea level (river- profile survey). Average discharge. 6 years, 1,060 cfs (767,400 acre-ft per year). Extremes. Maximum discharge during year, 2,440 cfs Feb. 17 (gage height, 4.60 ft); mini mum, 514 cfs Aug. 2 (gage height, 1.41 ft). 1952-58; Maximum discharge, 3,040 cfs Dec. 22, 1955 (gage height, 5.18 ft); mini mum, 446 cfs Aug. 21, 1955 (gage height, 1.24 ft). Remarks. Records excellent except those for period of no gage-height record, which are good. Slight regulation by Crescent Lake, Crane Prairie and Wickiup Reservoirs (see p. 60). Many diversions for irrigation above station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 29 Dec. 30 to Sept. 30 1.9 725 1.4 510 2.5 1,040 2.5 970 3.5 1,670 3.0 1,270 4.5 2,360 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 790 1,210 1,220 1,370 1,490 1,690 1.520 a600 935 751 531 615 2 830 1,230 1,220 1,370 1,480 1,660 1,480 a600 915 762 520 619 3 930 1,280 1,180 1,370 1,460 1,810 1,160 a650 1.170 719 528 615 4 897 1,290 1,200 1,340 1,400 1,990 1,000 a650 1,100 655 559 584 5 875 1,310 1,210 1,320 1,360 2.020 1,010 a650 930 627 *590 598 6 930 1,300 1,240 1,320 1,320 1,960 1,190 a650 965 598 590 615 7 941 1,330 1,290 *1,300 1.290 1,930 1,510 a7OO 1,130 608 608 647 8 996 1,290 1,340 1,290 1,310 1,880 905 *683 1,050 604 598 655 9 1.280 1,280 1,310 1,310 1,310 1,850 856 699 982 608 587 608 10 *1,120 1,290 1,320 1,260 1,370 1,840 812 715 1,090 584 608 598 11 968 1,300 1,360 1,270 1,440 1,740 794 615 1,090 580 604 584 12 958 1,300 1,360 1,310 1,480 1,820 727 612 1,000 556 584 584 13 968 1,360 1,350 1,320 1,500 1,810 671 584 900 545 576 *612 14 985 1,350 1,120 1,360 1,530 1,810 667 570 812 558 552 727 15 963 1,340 985 1,310 *1,700 1,820 645 573 731 534 548 807 16 946 1,340 990 1,310 1,950 1,820 615 584 699 542 548 854 17 930 1,360 1,000 1,330 2,290 1,820 604 601 *699 548 548 798 18 914 1,360 996 1,360 2.520 1,860 584 659 687 580 556 735 19 914 1.580 1,040 1,360 2,320 1,860 590 643 719 590 545 719 20 908 1,370 1,020 1,370 2,510 1,840 590 671 820 576 545 671 21 870 1,360 1.O4O 1,360 2,250 1,640 655 655 838 556 545 635 22 958 *1,360 897"875 1,360 2,140 1,500 627 659 900 548 545 598 23 990 1,310 1,320 2,050 1,490 608 762 848 545 545 580 24 985 1,140 875 950 2,090 1,500 594 852 885 542 552 570 25 985 914 1,180 890 2,080 1,450 601 900 1,100 551 545 615 26 902 855 1,080 875 2,070 1,420 612 830 1,010 606 545 645 27 760 820 1,020 880 1,850 1,410 627 910 838 802 538 645 28 1,150 845 1,120 1,320 1,690 1,410 a600 960 755 570 554 619 29 1,210 1,070 1,350 1,520 1.400 a600 9l5 683 548 551 608 30 1,200 1,110 1.460 1,500 1,400 a6OO 870 671 552 548 594 31 1,220 1,410 1,540 1,440 895 534 584 Total 30,273 37,054 36,058 40,065 48,850 52,870 23,832 21,897 26,912 18,419 17,537 19,310 Bean 977 1,235 1,163 1,292 1,745 1,705 794 706 897 594 559 644 Ac-ft 60,050 73,500 71,520 79,470 96,890 104,900 47,270 43,430 55,380 56,530 34 , 390 38,300 Calendar year 1957: Max 2,64O Min 474 Mean 1,134 Ac-ft 821, 2OO Water year 1957-58: Max 2,320 Min 52O Mean 1,022 Ac-ft 739, 6OO

* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for Crooked River near Culver. 68 DESCHUTES RIVER BASIN

780. Beaver Creek near Paulina, dreg.

Location. Lat 44°09'50", long 119°55'20", in NEir sec. 26, T. 16 S., R. 23 E., on right bank three-quarters of a mile downstream from Paulina Creek, if miles downstream from Wolf Creek, and 3 miles northeast of Paulina. Drainage area. 450 sq mi, approximately. Records available. October 1942 to September 1958. Prior to October 1945 monthly discharge only, published in WSP 1318. Gage. Water-stage recorder. Altitude of gage is 3,690 ft (by barometer). Average discharge. 16 years, 104 cfs (75,290 acre-ft per year). Extremes. Maximum discharge during year, 2,270 cfs Feb. 16 (gage height, 8.01 ft); min- Imum, 0.5 cfs Aug. 15, 16, 18. 1942-58: Maximum discharge, 3,620 cfs Dec. 28, 1945 (gage height, 10.2 ft), from rating curve extended above 900 cfs on basis of slope-area measurement at gage height 8.7 ft, and shape of later curves; maximum gage height, 10.38 ft Mar. 26, 1952; no flow Oct. 13-29, 1945. Remarks. Records good except those for periods of shifting control, which are fair. Mo regulation. Diversions for irrigation of about 6,400 acres above station. Two small ditches divert above station for irrigation of about 250 acres below station. Revisions1951-52! (water years).--WSP 1348: Drainage area. WSP 1448: 1946, 1948, 1949-50(M),

Rating tables, water year 1957-58, except periods of shifting control (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Jan. 28 Jan. 29 to Sept. 30

0.3 2.8 1.0 45 0.6 0.9 30 .4 5.5 1.3 84 1.7 1.1 52 .5 9.2 1.6 153 3.6 1.5 116 2.0 280 6.5 2.0 245 10 3.0 675 .7 16 8.0 2,270 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov.. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 5.2 15 16 29 227 373 276 227 9.3 16 0.7 3.6 2 578 15 16 29 180 315 262 242 13 20 .8 TTff 3 5.8 14 15 31 175 287 248 245 17 26 .8 4.8 4 5.8 14 TS 29 194 239 252 248 20 22 .9 4.8 5 5.8 14 16 2! 233 239 236 262 20 19 .9 5.0 6 5.8 14 15 21 197 197 227 *339 15 18 .9 5.0 7 6.8 14 15 21 386 175 256 378 9.7 19 *.9 5.0 8 *8.7 14 19 21 572 165 368 304 9.3 18 .9 5.3 9 9.2 14 18 *23 486 170 331 252 78 18 .8 5.3 10 9.2 15 16 27 558 170 368 236 60 16 .8 5.6 11 9.2 15 15 33 351 162 477 270 47 14 *5.9 12 8.8 16 15 60 877 142 531 430 36 11 5.9 13 9.6 18 16 105 *926 TA? 580 3l9 30 11 6.2 14 12 24 16 62 464 144 634 227 18 10 6.5 15 12 2T 19 50 1,050 160 648 168 8.1 10 i_ 6.5 16 12 19 31 70 2,020 142 594 137 5.9 9.3 6.5 17 13 16 48 68 1,870 160 621 124 5.0 8.9 6.5 18 12 15 31 86 1,840 160 736 114 4.5 7.4 6.5 19 13 17 29 64 *1,540 158 foTT 112 *4.2 1.9 6.2 20 14 *16 96 57 1,440 197 567 105 9.9 1.9 3. 6.5 21 14 14 "78-254 49 1,250 273 567 99 9.1 1.7 tr-c ( 6.5 22 15 14 38 1,120 304 540 88 2.5 1.5 6.5 23 15 15 42 41 1,090 301 450 78 275 1.3 5. 6.5 24 15 17 42 43 1,380 378 355 66 3.2 2.5 5.9 6.5 25 !§_ 18 40 50 1,620 *373 315 50 5.9 2.5 5.9 7.7 26 16 18 39 55 933 290 280 44 6.2 1.6 5.6 7.3 27 16 16 35 52 598 259 239 39 5.3 1.5 4.8 7.3 28 15 15 47 141 459 304 212 37 17 1.3 4.8 6.9 29 15 15 59 982 - 312 500"191 31 20 .9 4.5 6.9 30 15 15 45 79? 319 28 18 .7 3.2 7.3 31 15 29 347 315 24 77 1.7 Total 350.7 477 1,187 3,497 24,036 7,325 12,169 5,323 509.6 293.6 71.1 181.8 Mean 11.3 15.9 38.3 113 858 236 406 172 17.0 9.47 2.29 6.06 Ac-ft 696 946 2,350 6,940 47,670 14,530 24,140 10,560 1,010 582 141 361 Calendar year 1957: Max 1,610 Min 1.5 Mean 99.0 Ac-ft 71,640 Water year 1957-58: Max 2,020 Min 0.6 Mean 152 Ac-ft 109,900 Peak discharge (base, 600 cfs).--Jan. 29 (6:30 p.m.) 1,570 cfs (5.72 ft); Feb. 12 (8 p.m.) 1,360 cfs (5.05 ft); Feb. 16 (5 a.m.) 2,270 cfs (8.01 ft); Feb. 25 (7 a.m.) 1,800 efs (6.56 ft); Apr. 18 (1 p.m.) 776 cfs (3.24 ft). * Discharge measurement made on this day. Note. Shifting-control method used Oct. 1-14, Oct. 22 to Nov. 20, June 20 to Aug. 20. DESCHUTES RIVER BASIN 69

795. Crooked River near Post, Oreg.

Location. Lat 44°07'00", long 120°15'50", In sec. 7, T. 17 S., R. 21 E. , on right bank 1 mile downstream from North Fork and H miles southeast of Post. Drainage area. 2.160 sq mi, approximately, of which 500 sq mi is probably noncontributing. Records available. November 1908 to May 1911, December 1939 to September 1958. Records for June to August 1911, published in WSP 312, have been found to be unreliable and should not be used. Gage. Water-stage recorder. Datum of gage is 3,461.60 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Nov. 9, 1908, to May 31, 1911, staff gage at site half a mile upstream at different datum. Average discharge. --18 years (1940-58), 349 cfs (252,700 acre-ft per year). Extremes . Maximum discharge during year, 6,230 cfs Feb. 25 (gage height, 6.68 ft); mini mum, 11 cfs Aug. 11. 1908-11, 1939-58: Maximum discharge, 7,550 cfs Mar. 26, 1952 (gage height, 7.31 ft), from rating curve extended above 3,800 cfs; minimum, 4 cfs Aug. 21-31, 1909, Aug. 20, 1953. Remarks . Records good except those for periods of ice effect, which are fair. No regula tion. Many diversions for irrigation above station. One small ditch diverts above station for irrigation of about 60 acres below. Revisions (water years) . --WSP 1448: 1909-11. See also Records available.

Rating tables, water year 1957-58, except periods of ice effect height, in feet, and discharge, in cubic feet per second) Oct. 1 to Apr. 17 Apr. 18 to Sept. 30

1.0 34 3.0 69O 0.7 2.5 470 1.3 72 3.5 1,120 .9 30 3.0 780 1.7 151 5.0 3,070 1.1 53 4.0 1,750 2.1 265 7.0 6,900 1.5 125 5.0 3,070 2.5 415 2.0 265 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 51 80 70 90 690 1,140 867 1,280 286 91 18 17 2 77 78 70 100 560 993 816 1,400 272 104 18 16 3 99 74 65 90 480 903 776 1,460 300 160 18 16 4 86 69 65 80 485 732 711 1,450 286 146 18 17 5 88 72 70 70 505 711 684 1,490 244 119 18 16 6 90 75 80 75 495 589 670 1,660 234 98 18 16 7 *92 75 80 85 698 526 768 *1,570 272 91 *15 16 8 88 80 90 90 1,180 500 1,150 1,490 251 96 14 17 9 85 75 85 *110 903 475 1,220 1,400 244 85 14 18 10 80 78 75 120 1,010 460 1,480 1,340 296 75 15 20 11 77 78 80 130 824 446 1,970 1,460 258 66 14 *20 12 74 82 110 200 1,120 407 2,290 1,720 221 64 14 20 13 80 101 94 250 *1,670 395 2,680 1, 350 203 58 14 23 14 80 120 96 209 1,200 395 2,860 1,080 194 52 14 24 15 80 TIT 88 164 1,590 403 2,710 932 160 45 14 23 16 78 92 200 190 3,600 391 2,500 844 136 44 15 22 17 77 74 255 239 3,670 391 2,830 788 117 38 17 22 18 75 86 181 290 3,990 395 5,000 759 98 34 18 21 19 74 80 133 215 3,490 387 2,420 745 *85 36 18 21 20 74 *74 214 164 *3,270 43f 2,510 668 78 39 18 22 21 74 69 939 158 3,040 560 2,560 696 78 34 19 23 22 75 77 390 137 2,950 784 2,230 598 73 30 20 23 23 75 77 190 133 2,740 824 1,750 574 65 29 21 23 24 77 78 168 135 3,920 1,060 1,460 485 76 29 25 24 25 83 77 161 144 5.410 1,190 1,270 425 136 28 20 25 26 105 77 149 156 3,130 *939 1,160 392 146 26 21 26 27 70 129 151 1,940 921 1,010 404 119 26 21 26 28 94 65 164 208 1,450 1,000 932 364 100 27 19 26 29 86 65 168 1,580 1,010 967 316 96 25 18 26 30 83 75 142 2,140 975 1,090 254 93 21 18 26 31 82 90 1,000 921 " 20_ 18 Total 2,521 2,384 4,890 8,903 56,01O 21,256 49,341 29,628 5,207 1,836 537 635 Mean 81.3 79.5 158 287 2,000 686 1,645 956 174 59.2 17.3 21.2 Ac-ft 5,000 4,730 9,700 17,660 111,100 42,160 97,870 58,770 10,330 3,640 1,070 1,260 Calendar year 1957: Max 3,860 Min 8.8 Mean 305 Ac-ft 220,700 Water year 1957-58: Max 5,410 Min 14 Mean 502 Ac-ft 363,300 Peak discharge (base. 2,000 cfs).--Jan. 30 (3:30 a.m.) 3,560 cfs (5.31 ft); Feb. 18 (7 a.m.) 4,170 cfs (5.67 ft); Feb. 25 (5:30 a.m.) 6,230 cfs (6.68 ft); Apr. 18 (12:30 a.m.) 3,320 cf (5.16 ft).______* Discharge measurement made on this day. Note. Stage-discharge relation affected by ice Nov. 27 to Dec. 12, Jan. 1-13. 70 DESCHUTES RIVER BASIN

805. Crooked River above Hoffman Dam, near Prineville, Oreg.

Location. Lat 44 008'40", long 120°49'40", in NE^ sec. 32, T. 16 S., R. 16 E., on right bank 0.9 mile upstream from Hoffman diversion dam and 11 miles south of Prineville. Drainage area. 2,760 sq mi, approximately, of which 500 sq mi is probably noncontributing. Records available. November 1908 to September 1914, March 1941 to September 1958. Pub- lished as "near Prineville" 1908-12 and as "at Hoffman 1 s ranch, near Prineville 1913-14. The estimate of monthly mean discharge for October 1908, published in WSP 370, has been found to be unreliable and should not be used. Sage. Water-stage recorder. Datum of gage is 2,981.005 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Jan. 1, 1913, staff gage at Steam's ranch 8 miles downstream at different datum. January 1913 to September 1914, staff gage at Hoffman's ranch 3 miles downstream at different datum. Average discharge. 22 years (1909-14, 1941-58), 396 cfs (286,700 acre-ft per year). Extremes. Maximum discharge during year, 5,940 cfs Feb. 25 (gage height, 7.04 ft); mini mum, 2.9 cfs Aug. 18, 19. 1908-14, 1941-58: Maximum discharge, 8,410 cfs Mar. 26, 1952 (gage height, 8.2 ft, from floodmarks); no flow at times in 1940. Remarks. Records good except those for periods of ice effect, which are fair. No regulation. Diversions for irrigation of over 20,000 acres above station. Revisions (water years). WSF 1448: 1909-13, 1914(M), drainage area (present site and former site). See also Records available.

Rating tables, water year 1957-58, except periods of loe effect height, In feet, and discharge, In cubic feet per second) Oct. 1 to Apr. 18 Apr. 19 to Sept. 3O 1.3 24 3.O 565 0.99 140 1.5 46 4.O 1,460 1.0 310 1.7 74 6.0 4,160 1.1 570 2.0 132 7.0 5,870 1.2 4.0 1,460 2.5 290 1.3 6.0 4,160 1.5

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 31 91 97 b!4O 816 1,560 965 1,34O 3O2 129 18 IB15 2 BT 89 b90 b!40 650 1,300 920 1,550 334 133 TT 3 86 88 b90 b!50 551 1,150 866 1,650 334 142 18 IS 4 99 84 79 b!20 509 994 816 1,660 326"360 189 15 16 5 91 79 18. b90 537 884 766 1,68O 168 14 16 6 88 79 97 b80 565 807 742 *1,900 326 142 15 17 7 *100 84 102 b90 572 695 758 1,870 310 129 *17 17 8 100 84 99 *b!20 1,260 628 1,O90 1,760 350 114 16 16 9 95 86 1O6 b!3O 1,110 600 1,320 1,610 3O6 118 12 16 1O 91 82 99 b!4O 1,160 600 1,460 1,500 322 1O8 8.0 *15 11 86 84 b90 147 1,080 579 2,130 1,490 326 98 6.5 17 12 82 86 130 160 1,170 558 2,59O 2,08O 290 82 4.5 18 13 88 89 100 300 2,140 516 3,210 1,730 258 67 5.7 20 14 89 102 104 330 *1,580 502 3,540 1,320 238 67 4.1 25 15 88 121 106 234 1,7OO 509 3,620 1,O90 212 62 3.8 29 16 86 119 106 195 3,73O 509 3,2OO 938 183 58 3.8 28 17 84 102 244 271 4,350 483 3,40O 850 162 53 3.5 26 18 84 93 245 346 4,600 B6T 5,880 816 *145 54 25 19 82 100 179 315 4,350 483 3,220 798 129 45 e 25 20 81 95 150 228 *4,O20 502 3,160 758 116 34 5.3 24 21 79 *84 536 191 3,79O 586 3,320 696 127 32 8.5 25 22 82 79 672 177 3,740 842 3,090 675 116 31 8.5 26 23 81 88 334 163 3,390 965 2,430 605 120 28 8.5 31 24 82 89 215 163 3,840 1,170 1,930 564 150 28 8.5 31 25 88 93 188 165 5.500 *1,46O 1,580 486 155 26 9.0 40 26 95 91 179 168 4,510 1,22O 1,39O 456 189 25 9.6 37 27 1O6 b9O 168 177 2,810 1,040 1,210 435 186 25 11 35 28 104 93 185 179 2,020 1,090 1,070 430 158 22 14 35 29 100 b70 204 714 - 1,160 1,060 375 142 24 15 34 30 97 80 b!80 2 , 820 1,110 1,160 326 136 22 18 34 31 93 b!50 1,340 ...... 1,060 294 19 16 Total 2,689 2,694 5,402 9,983 65,850 26,064 59,893 35,732 6,808 2,274 320.5 723 Mean 86.7 89.8 174 322 2,352 841 1,996 1,088 227 73.4 10.3 24.1 Ac-ft 5,330 5,340 10,710 19,800 130,600 51,700 118,800 66,910 13,500 4,510 636 1,430 Calendar year 1957; Max 4,140 Mln 1.2 Mean 342 Ac-ft 247,400 Water year 1957-58: Max 5,300 Mln 3.2 Mean 593 Ac-ft 429,300 Peak discharge (base, 2,500 cfs).--Jan. 30 (2:30 p.m.) 3,640 cfs (5.66 ft); Feb. 18 (5:30 p.m.) 4,680 cfs (6.32 ft); Feb. 25 (7 p.m.) 5,940 cfs (7.O4 ft); Apr. 18 (11 a.m.) 4,020 cfs (5.91 ft). * Discharge measurement made on this day. b Stage-discharge relation affected by ice. DESCHUTES RIVER BASIN 71

875. Crooked River near Culver, Oreg.

Location. Lat 44°33'40". long 121°16'10", in sec. 3 (50 ft west of ^-corner on line between sees. 2 and 3), T. 12 S., R. 12 E., on right bank 1 mile upstream from mouth, 1.2 miles downstream from Cove powerplant, and 4 miles northwest of Culver. Drainage area.--4.330 sq mi, approximately, of which 500 sq mi is probably noncontributing. Records available. October 1917 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,664.86 ft above mean se level, datum of T929, supplementary adjustment of 1947. Prior to Aug. 2, 1945, staff gages at several sites within 1.2 miles of present site at various daturas. Average discharge. 41 years, 1,550 cfs (1,122,000 acre-ft per year). Extremes. Maximum discharge during year, 7,850 cfs Feb. 26 (gage height, 7.99 ft); minimum, 1,090 cfs Nov. 1; minimum daily, 1,330 cfs Aug. 1. 1917-58: Maximum discharge observed, 8,260 cfs Mar. 30, 31, 1943 (gage height, 6.70 ft, site and datum then in use); minimum recorded, 920 cfs Oct. 14, 1945; minimum daily, 970 cfs July 12 to Sept. 5, 1921. Remarks.--Records excellent. Flow slightly regulated by Ochoco Reservoir (capacity, 47,500 acre-ft); occasional diurnal fluctuation caused by powerplant 1.2 miles above station. Water is diverted for irrigation of land above station. The area served increased from about 30,000 acres in 1918 to 37,000 acres in 1946. Several hundred cubic feet per second of water diverted from Deschutes River for irrigation of other lands above station. Opal Springs and several other springs within about 17 miles above station contribute about 1,000 cfs to the flow. Revisions (water years). WSP 864: 1922, 1925, 1928, 1932, 1936-37. WSP 1318: 1924-251M).

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 2.5 1,280 3.0 1,600 4.0 2,410 6.0 4,760 8.0 7,870 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,460 1,450 1,430 1,480 2,520 5,820 2,470 2,490 1,800 1,580 1.330 1,410 2 1,480 1,450 1,440 1,450 2,160 3,400 2,400 2,610 1,810 1,560 1,340 1,400 3 1,490 1,450 1,430 1,460 2,020 3,150 2,370 2,770 1,790 1,550 1,360 1,410 4 1,540 1,450 1,430 1,480 1,910 3,000 2,380 2,870 1,840 1,540 1,360 1,420 5 1,570 1,450 1,430 1,450 1,890 2,780 2,350 2,880 1,840 1,570 *1,360 1,410 6 1,550 1,440 1,430 1,430 1,910 2,720 2,320 2,940 1,880 1,550 1,360 1,410 7 1,540 1,440 1,440 1,420 1,920 2,600 2,300 *3,150 2,040 1,510 1,360 1,410 8 1,570 1,440 1,450 1,430 2,020 2,500 2,380 3,120 1,930 1,480 1,350 1,410 9 1,590 1,440 1,450 1,440 2,640 2,430 2,780 2,990 1,950 1,460 1,350 ,420 10 *1,570 1,440 1,450 1,480 2,420 2,400 2,780 2,830 1,870 1,450 1,340 ,420 11 1,550 1,430 1,460 1,480 *2,510 2,390 3,040 2,750 1,870 1,440 1,350 ,430 12 1,540 1,440 1,450 1,490 2,560 2,360 3,660 2,930 1,850 1,410 1,350 ,430 13 1,540 1,440 1,430 1,560 3,090 2,330 4,100 5,300 1,820 1,400 1,360 * ,430 14 1,550 1,440 1,440 1,610 3,470 2,300 4,590 2,880 1,780 1,390 1,370 ,430 15 1,540 1,430 1,670 1,640 *2,910 2,110 4,850 2,550 1,720 1,390 1,360 1.460 16 1,530 1,460 1,550 1,610 3,900 2,050 4,800 2,360 1,670 1,390 1,370 1,450 17 1,520 1,460 1,460 1,590 5,460 2,030 4,550 2,260 1,590 1,380 1,370 1,440 18 1,530 1,460 1,540 1,760 *6,140 1,990 4,800 2,180 *1 , 540 1,390 1,390 1,420 19 1,530 1,440 1,590 1,740 6,590 1,980 5,100 2,160 1,480 1,380 1,390 1,410 20 1,530 1,430 1,540 1,680 6,350 1,960 4,460 2,100 1,480 1,370 1,390 1,410 21 1,520 »1,440 1,520 1,610 6,030 2,000 4,530 2,040 1,460 1,370 1,390 1,410 22 1,510 1,430 1,960 1,560 5,650 2,070 4,700 2,000 1,450 1,360 1,390 1,430 23 1,500 1,430 1,880 1,540 5,620 2,300 4,470 2,030 1,450 1,350 1,400 1,430 24 1,500 1,430 1,630 1,530 5,280 2,360 3,810 1,950 1,520 1,360 1,390 1,440 25 1,490 1,460 1,550 1,550 5,940 2,610 3,340 1,910 1,670 1,360 1,400 1,450 26 1,490 1,460 1,540 1,590 *7,310 2,820 3,050 1,840 1,620 1,350 1,390 1,450 27 1,490 1,470 1,570 1,610 6,530 *2,570 2,870 1,800 1,630 1,350 1,400 1,450 28 1,490 1.480 1,630 1,610 *4,600 2,480 2,640 1,780 1,630 1.340 1,410 1,440 29 1,490 1,470 1,640 1,580 2,560 2,490 1,770 1,620 1,340 1,410 1,430 30 1,470 1,440 1,590 2,700 2,590 2,450 1.740 1,610 1,340 1.420 1,430 31 1,460 1,520 3j620 ...... 2,520 1,790 1,340 1,420 Total 47,130 43,390 47,540 51,180 111,350 77,180 102,830 74,770 51,210 44,050 42,630 42,790 Mean 1,520 1,446 1,534 1,651 3,977 2,490 3,428 2,412 1,707 1,421 1,375 1,426 Ae-ft 93,480 86,060 94,290 101,500 220,900 153,100 204,000 148,300 101,600 87,370 84,560 84,870 Calendar year 1957: Max 5,500 Mln 1,330 Mean 1,756 Ac-ft 1,271,000 Water year 1957-58; Max 7,310 Min 1,330 Mean 2,017 Ac-ft 1,460,000 Discharge measurement made on this day. 72 DESCHUTES RIVER BASIN

880. Lake Creek near Sisters, Oreg.

Location. Lat 44°25'40", long 121°43'30", in SW£ sec. 24, T. 13 S., R. 8 E., on left bank a quarter of a mile downstream from Suttle Lake and 13 miles northwest of Sisters. Drainage area. 22.2 sq mi. Records available. June to November 1911, March to September 1912, May to October 1913, April 1915 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Altitude of gage is 3,430 ft (from topographic map). June 1, 1911, to Oct. 31, 1913, and Apr. 1, 1915, to Mar. 31, 1916, staff gage at two sites 1,000 ft upstream at different datums. Apr. 1, 1916, to Oct. 12, 1928, staff gage or water-stage recorder at site 40 ft downstream at different datum. Average discharge.--43 years (1915-58), 52.1 cfs (37,720 acre-ft per year). Extremes.--Maximum discharge during year, 168 cfs Apr. 23 (gage height, 2.43 ft); mini mum, 30 cfs Oct. 22. 1911-13, 1915-58: Maximum discharge, 380 cfs Dec. 24, 1955 (gage height, 3.65 ft); minimum,1.0 cfs Nov. 4, 5, 1940; minimum daily, 8 cfs Nov. 5, 1940, Oct. 6, 1942. Remarks. Records good. Occasional regulation by storage in Suttle Lake. No diversion above station. Revisions (water years). WSP 1124: 1943, 1947. WSP 1218: Drainage area. WSP 1448: 1916(M), 1925.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.0 31 1.5 66 2.0 113 2.5 178 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 36 35 44 76 95 107 56 92 §L 41 38 33 2 36 35 43 72 98 T6T 56 92 86 42 37 ST 3 37 35 41 70 95 97 56 91 80 43 37 37 4 44 35 *41 64 91 93 56 91 73 44 36 36 5 48 35 3£ 60 87 88 56 92 66 44 37 36 6 45 35 42 60 84 *85 56 92 64 44 37 36 7 43 35 48 58 *81 83 56 92 67 45 37 36 8 42 35 47 58 78 82 56 93 69 44 37 *35 9 41 35 46 58 78 78 55 94 69 43 36 36 10 4O 35 44 51 78 76 55 95 68 43 36 36 11 39 36 44 60 76 73 55 96 67 42 36 35 12 38 37 44 62 79 69 54 *98 *65 *42 36 35 13 38 42 43 59 80 6S 54 99 63 41 35 36 14 37 44 43 60 78 68 54 106 61 41 35 36 15 36 42 42 60 82 67 56 105 60 41 35 36 16 36 41 42 57 90 65 59 96 58 41 36 36 17 36 39 43 65 93 65 64 93 SO 41 36 36 18 36 39 45 68 101 64 64 93 45 41 35 36 19 35 39 52 70 109 52 64 88 44 41 35 36 20 35 38 96 72 113 JJL 80 89 46 40 35 36 21 33 38 -90107 74 113 54 110 96 47 40 35 36 22 31 38 72 113 57 153 103 48 39 35 36 23 32 37 80 74 112 58 162 112 55 39 35 36 24 34 37 76 78 109 58 140 114 56 39 35 35 25 .35 36 80 77 117 59 131 110 55 39 38 35 26 35 35 85 74 128 58 124 109 54 39 22.T.Q 34 27 35 39 SO 72 121 58 121 106 52 39 38 34 28 35 44 85 77 112 58 116 100 51 39 36 35 29 35 48 78 82 - 56 95 91 51 38 33 35 30 35 46 80 88 55 90 91 43 38 "T&>31 35 31 35 78 92. 56 90 38 &£. Total 1,153 1,145 1,848 2,126 2,691 2,156 2,404 3,009 1,800 1,271 1.1O9 1,068 Mean 37.2 38.2 59.6 68.6 96.1 69.5 80.1 97.1 60.0 41.0 35.8 35.6 Ac-ft 2,290 2,270 3,670 4,220 5,340 4,280 4,770 5,970 3,570 2,520 2,200 2,120 Calendar year 1957: Max 140 Min 31 Mean 53.8 Ac-ft 38,930 Water year 1957-58: Max 162 Min 31 Mean 59.7 Ac-ft 43.22O * Discharge measurement made on this day. DESCHUTES RIVER BASIN 73

915. Metolius River near Grandview, Oreg.

Location. Lat 44 036'40", long 121°27'10", In NE^NE^ sec. 19, T. 11 S., R. 11 E., on right bank three-quarters of a mile upstream from Street Creek, 7? miles northwest of Grandview, and 13 miles northwest of Culver. Drainage area.--324 sq mi, hydrologic drainage boundary uncertain owing to ground-water exchange. Records available. April 1910 to February 1912 (gage heights and discharge measurements only), March 1912 to December 1913, October 1921 to September 1958. Published as "at Hubbard's ranch, near Sisters" 1910 and as "at Hubbard's ranch, near Grandview" 1910-13. Sage. Water-stage recorder. Datum of gage is 1,910 ft above mean sea level (river- profile survey). Prior to Dec. 31, 1913, staff gage at site 5 miles upstream at different datum. Oct. 1, 1921, to May 3, 1949, staff gage at site 20 ft downstream at present datum. Average discharge.--38 years (1912-13, 1921-58), 1,472 cfs (1,066,000 acre-ft per year). Extremes. Maximum discharge during year, 2,530 cfs Feb. 16 (gage height, 1.44 ft); minimum, 1,420 cfs Sept. 30. 1912-13, 1921-58: Maximum discharge, 5,780 cfs Jan. 7, 1923 (gage height, 3.32 ft), from rating curve extended above 2,200 cfs; minimum, 1,080 cfs Feb. 17, 1932, Oct. 2-31, Nov. 6, 7, 10-14, 1942. Remarks. Records excellent. No regulation. Many small diversions for irrigation of about 670 acres above station. Stream is spring fed. Revisions (water years). WSP 1448: 1913.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 16 Feb. 17 to Sept. 30 0.5 1,340 0.6 1,410 1.0 1,960 1.0 1,930 1.5 3,610 1.5 3,580 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,490 1,450 1,440 1,700 1,960 1,950 1,570 1,700 1,960 1,710 1,580 1,490 a 1,490 1,430 1,440 1,660 1,950 1,900 1,570 1,710 1,900 1,700 1.590 1,480 3 1,480 1,430 1,450 1,640 1,890 1,880 1,550 1,720 1,850 1,700 1,590 1,480 4 1,460 1,430 1,430 1,630 1,850 1,840 1,540 1,730 1,840 1,700 1,580 1,460 5 1,480 1,430 1,430 1,590 1,850 1,850 1,540 1,730 1,880 1,730 1,570 1,460 6 1,480 1,430 1,550 1,580 1.790 1,500 1,540 1,720 1,980 1,740 *1,570 1,460 7 1,460 1,430 1,950 *1,560 1,820 1,770 1,540 1,730 1,940 1,760 1,570 1,460 8 1,490 1,430 1,690 1,590 1,800 1,760 1,540 *1,760 1,880 1,720 1,570 1,480 9 *1,480 1,430 1,550 1,580 1,830 1,740 1,530 1,790 1,860 1,700 1,570 IjSOO 10 1,460 1,430 1,550 1,580 1,830 1,720 1,540 1,800 1,850 1,700 1,580 1,490 11 1,460 1,430 1,520 1,600 1,820 1,710 1,530 1,840 1,830 1,700 1,570 1,480 12 1,460 1,480 1,490 1,660 1,950 1,700 1,530 1,790 1,810 1,700 1,570 *1,460 13 1.530 1,4'S'O"1.560 1,490 1,630 1,960 1,680 1,540 1,760 1,800 1,680 1,540 1,480 14 1,490 1,490 1,620 1,930 1,670 1,540 1,750 1,810 1,670 1,530 1,460 15 1,460 1,460 1,480 1,700 *3,060 1,670 1,550 1,760 1,810 1,640 1,530 1,460 16 1,450 1,450 1,480 1,690 3,450 1,660 1,570 1,790 1,810 1,640 1,530 1,450 17 1,450 1,440 1,480 1,760 2,416 1,640 1,630 1,850 *1,810 1,650 1,510 1,460 18 1,440 1,460 1,480 1,750 2,430 1,650 1,630 1,840 1,830 1,640 1,510 1,450 19 1,440 1,450 1,730 1,720 3,320 1,630 1,640 1,890 1,840 1,640 1,510 1,460 30 1,440 1,440 2.120 1,700 2,320 1,600 2,000 1,900 1,850 1,630 1,510 1,440 31 1,440 1,430 3,030 1,690 3,150 1,600 3.180 1,950 1,840 1,630 1,510 1,450 33 1,450 *1 , 430 1,790 1,660 3,100 1,600 3,660 3,000 1,850 1,620 1,510 1,450 33 ,450 1,430 1,700 1,690 3,070 1,600 1,970 3,130 1,860 1,630 1,510 1,450 24 ,450 1,430 1,730 1,740 3,100 1,600 1,890 2,oi6 1,930 1,600 1,510 1,440 35 ,460 1,430 1,760 1,700 2,160 1,590 1,830 3,030 1,890 1,590 1,510 1,440 36 ,450 1,430 1,850 1,690 3,100 1,580 1,770 2,050 1,840 1,590 1,510 1,440 27 ,440 1,430 1,790 1,680 3,030 *1,580 1,750 2,090 1,830 1,600 1,500 1,440 28 ,440 1,440 1,940 1,830 1,970 1,580 1,720 2,050 1,770 1,600 1,500 1,450 29 1,440 1,430 1,860 3,060 - 1,580 1,710 1,970 1,750 1,630 1,500 1,440 30 1 430 1,430 1,780 2.100 1,570 1,680 1,950 lj.730 1,600 1,500 Jj430 31 ijisb 1 730 2,636 1>550 3,010 1,590 1,490 Total 45,260 43,370 51,150 53,790 56,730 52,180 50,170 57,730 55,420 51,370 47,630 43,780 Mean 1,460 1,442 1,650 1,703 3,026 1,683 1,673 1,862 1,847 1,657 1,536 1,459 Ac-ft 89,770 85,830 101,500 104,700 112,500 103,500 99,510 114,500 109, 900 101,900 94,470 86,840 Calendar year 1957: Max 2,250 Mln 1,430 Mean 1,613 Ae-ft 1,167,000 Water year 1957-58: Max 3,450 Mln 1,420 Mean 1,664 Ao-ft 1,305,000 Discharge measurement made on this day.

534540 0-60-6 74 DESCHUTES RIVER BASIN

925. Deschutes River near Madras, Oreg.

Location. Lat 44°43'40", long 121 "14'50", In SW£ sec. 1, T. 10 S., R. 12 E., on right bank 2? miles downstream from Pelton Dam, about 400 ft below reregulating dam, 3 miles upstream from Shltike Creek, 8? miles northwest of Madras, and at mile 100.1. Prior to Nov. 23, 1957, staff gage at site 1J miles upstream. Drainage area. 7.820 sq ml, approximately. Records available. October 1923 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,390.25 ft above mean sea level, datum of 1929, supplementary adjustment of 1947 (levels by Portland General Electric Co.). Prior to May 6, 1924, staff gage and May 6, 1924, to June 14, 1933, water-stage recorder, at site 2? miles upstream at different datum. June 15, 1933, to Nov. 30, 1956, water-stage recorder and Dec. 1, 1956, to Nov. 22, 1957, staff gage, at site 1? miles upstream at different datum. Average discharge. 35 years, 4,426 cfs (3,204,000 acre-ft per year). Extremes. Maximum discharge during year, 13,100 cfs Feb. 19 (gage height, 5.90 ft); min imum, 1,200 cfs Dec. 13 (gage height, 1.44 ft); minimum dally, 2,440 cfs Dec. 3, 4. 1923-58: Maximum discharge, 13,300 cfs Jan. 1, 1943 (gage height, 6.89 ft, site and datum then in use); minimum, that of Dec. 13, 1957: minimum dally, that of Dec 3. 4, 1957. Remarks. Records good. Plow regulated by Pelton Dam and reregulating dam since Nov. 23, 1957. Large diversions in upper river basin for Irrigation. Some winter and spring runoff stored in Ochoco Reservoir (capacity, 47,500 acre-ft) and in Crescent Lake, Crane Prairie, and Wickiup Reservoirs (see p. 60). Revisions. WSP 1398: Drainage area.

Rating tables, Nov. 23, 1957, to Sept. 30, 1958 (gage height, In feet, and discharge, in cubic feet per second) (Shifting-control method used Jan. 30 to Feb. 14, Feb. 18-21) Nov. 23, 1957 to Feb. 17, 1958 Feb. 18 to Sept. 30, 1958 2.1 2,330 2.8 3,710 3.0 4,150 4.0 7,060 6.0 12,700 6.0 14,500 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 ,200 4,500 2,700 4,920 *7,130 8.020 6,190 5.010 5,500 4.660 3,990 4,060 2 ,200 4,600 2,510 *4,810 6,460 77600 6,100 5,300 5,330 4,610 4,060 4,100 3 ,300 4,600 *2.440 4,940 5,880 7,400 6,010 5,560 5,650 4,640 4,080 4,120 4 ,300 4,600 2,440 4,550 5,600 7,400 5,410 5,440 5,410 4,510 4,080 4,060 5 ,400 4,600 *2,550 4,830 5,650 7,260 5,300 *5,620 5,330 4,540 *4,080 4,080 6 ,400 4,600 2,660 4.170 5,650 6,900 5,650 5,680 5,650 4,460 4,010 4,100 7 ,400 4,700 3,460 4,880 5,600 6,960 5,830 6,040 5,890 4,510 4,100 4,100 8 ,500 4,600 5,010 5,130 5,780 6,600 5,440 6,130 5,680 4,410 4,170 4,100 9 .800 4,600 3,720 5,130 6,330 6,540 5,920 6,010 5,560 4,480 4,100 *4,150 10 ,666 4,600 3,560 5,180 *6,090 6,570 5,920 5,950 5,560 4,240 4,060 4,080 11 ,400 4,600 5,130 5,080 7,020 6,410 6,160 5,590 5,530 4,290 4,100 4,060 12 ,400 4,700 3,770 5,230 6,740 6,260 6,600 5,890 5,360 4,290 4,150 4,010 13 ,500 4,800 3,300 5,400 7,300 6,290 7,160 6,130 5,240 4,120 4,120 4,190 14 ,500 4,800 4,200 4,460 7,620 6,260 7,430 5,560 5,070 4,220 3,990 4,170 15 ,400 4,700 5,240 5,880 7,510 6,440. 8.440 5,440 4,850 4,190 4,080 4,270 16 ,400 4,700 4,650 5,700 *9,720 6,070 8,090 5,100 4,800 4,030 4,080 4,360 17 ,300 4,700 3,600 4,990 11,100 *5,980 7,400 5,300 *4,710 4,190 5.940 4.410 IS ,300 4,800 3,380 5,350 12,300 5,560 6,600 5,070 4.580 4,150 4,060 4,220 19 ,300 4,700 3,770 6,060 12,700 6,100 7,810 5,360 4^640 4,190 4,060 4,080 20 ,300 4,700 5,620 5,580 12,100 6,290 7,370 5,130 4,690 4,170 4,010 4,290 21 ,300 4,700 5,680 5,230 11,300 5,980 7,500 5,210 4,820 4,170 4,060 4,060 22 ,300 4,700 4,170 5,200 10,900 5,620 7,810 5,150 4,770 4,220 4,100 3,990 23 ,400 4,580 4,690 5,320 10,800 5,740 7,430 5,070 4,820 3.870 4,100 4,010 24 ,400 4,480 5.880 5,300 10,100 *6,260 7,060 5,530 4,990 4,170 4,010 3,990 25 ,400 4,280 5,060 5,130 *10,600 6,130 5,860 6,070 5,360 4,100 4,080 4,010 26 ,300 4,280 4,830 4,880 *12,100 6,410 5,560 5,150 5,210 3,890 3,990 4,080 27 ,100 *4,110 4,600 4,880 11,500 6,350 5,410 5,500 5,040 4,560 4,060 4,080 28 ,500 3,820 4,240 5,180 8,940 6,160 5,380 5,360 4,740 3,990 4,030 4,030 29 ,600 *3,360 5,080 5,960 - 6,130 5,130 5,270 4,660 4,120 3,990 3,940 30 ,600 2,810 5,300 7,740 6,260 5,070 5,240 4, 690 4,080 4,060 3,940 31 ,600 5,010 8.450 6,100 5,470 4,120 4,080 Total 136,400 134,320 128,250 165,540 240,520 200,050 193,040 170,330 154,130 132,190 125,880 123,140 Mean 4,400 4,477 4,137 5,340 8,590 6,453 6,435 5,495 5,138 4,264 4,061 4,105 Ac-ft 270,500 266,400 254,400 328,300 477,100 396,800 382,900 337,800 305,700 262,200 249,700 244,200 Calendar year 1957: Max 11,000 Min 2,440 Mean 4,936 Ac-ft 3,574,000 Water year 1957-58: Max 12,700 Min 2,440 Mean 5,216 Ac-ft 3,776,000 * Discharge measurement made on this day. Note. No gage-height record Oct. 1 to Nov. 22; discharge estimated on basis of a composite record for upstream stations accounting for 95# of drainage area. DESCHDTES RIVER BASIN 75

1015. white River below Tygh Valley, Oreg.

Location. La t 45°14'30", long 121 "05 '40", in NE^NE^ sec. 7, T. 4 S., R. 14 E., on left bank 200 ft below Pacific Power & Light Co.'s plant at White River Palls, 2 miles upstream from mouth, and 4 miles east of Tygh Valley. Drainage area. 368 sq mi. Records available. October 1917 to September 1958. Gage. Water-stage recorder. Datum of gage is 870.15 ft above mean sea level, datum of 1929,929, supplementary adjustment of 1947 (levels by Pacific Power and Light Co.). Prior to July 28, 1931, at site 750 ft downstream at different datum. July 28, 1931, to Sept. 30, 1954, at site 700 ft downstream at different datums. Average discharge. 41 years, 435 cfs (314,900 acre-ft per year). Extremes . Maximum discharge during year, 3,300 cfs Apr. 20 (gage height, 6.08 ft); mini mum, 44 cfs Sept. 2 (gage height, 1.19 ft); minimum daily, 111 cfs Aug. 29, 31. 1917-58: Maximum discharge, 13,300 cfs Jan. 6, 1923 (gage height, about 13.3 ft), from rating curve extended above 5,000 cfs; minimum, 10 cfs Dec. 11-14, 1919, Aug. 9, 1931 (estimated by observer); minimum daily, 71 cfs Aug. 31, 1941. Remarks . Records good. Some regulation at low flow .by powerplant. Diversions above station for irrigation. Revisions (water years) . WSP 1448: 1920, 1923, 1927-28, drainage area.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second)

1.6 105 3.5 895 2.0 197 4.0 1,240 2.5 365 6.0 3,200 3.0 595 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 152 157 181 500 1,200 1,O50 515 8O4 590 246 136 113 2 149 154 214 459 1,050 934 575 817 545 23T 140 ITS 3 174 154 203 414 928 876 545 830 510 228 152 119 4 147 154 189 389 772 798 545 824 482 219 *T40" 115 5 157 154 187 369 753 753 505 830 490 217 156 119

6 159 152 232 *345 759"694 700 495 798 959 217 136 121 7 154 TB? 850 314 661 490 798 7TT 211 136 123 8 152 152 666 322 778 617 495 824 612 195 138 127 9 157 154 472 314 772 585 530"486 *895 560 187 138 *129 10 149 152 381 511 804 565 940 53O 176 136 127 *147 11 161 337 325 747 535 617 ITS"988 500 171 134 125 12 TIT 187 304 441 1,280 500 606 472 169 134 125 13 159 3T8"353 286 472 *1,430 495 650 753 436 164 129 127 14 169 276 418 1,290 490 672 688 414 159 134 129 15 157 246 269 656 1,520 495 650 666 397 154 132 159 16 152 214 262 688 2.410 486 656 694 *373 147 134 140 17 149 205 255 778 2^060 486 711 729 357 149 134 140 18 147 *197 258 784 2,110 468 798 765 325 149 134 132 19 149 217 377 711 1,790 450 778 830 300 147 132 134 20 154 203 1.000 661 1,590 446 1,990 856 283 143 132 136 21 154 187 804 570 1,430 I5o"441 2.640 850 276 T40"138 129 132 22 152 184 606 545 1,320 1,960 843 266 132 138 23 166 184 500 530 1,260 472 1,570 876 '5ST249 143 127 132 24 169 179 459 700 1,330 505 1,360 882 140 123 134 25 176 176 585 683 1,520 520 1,180 850 280 145 123 134 26 176 184 914 634 1,380 505 1,070 791 252 147 121 136 27 169 176 765 600 1,220 486 967 850 258 147 115 134 28 166 181 836 765 1,110 *486 888 747 262 152 115 136 29 157 174 836 1,330 - 495 830 678 249 152 111 136 -t CO 30 157 J.D3 672 1,450 500 OJ.fll 7{ 622 249 140 T2T 132 31 159 565 1,430 490 639 138 111 Total 4,881 5,630 14,741 18,908 35,307 17,720 26,611 24,833 12,455 5,261 4,045 3,900 Mean 157 188 476 610 1,261 572 887 801 415 170 130 130 Ac-ft 9,680 11,170 29,240 37,500 70,030 35,150 52,780 49,260 24,700 10,440 8,020 7,740 Calendar year 1957 s Max 1,950 Min 117 Mean 393 Ac-ft 284,200 Water year 1957-58 : Max 2,640 Mln 111 Mean 478 Ac-ft 345,700 Peai discharge (base, 1,200 cfs). Jan. 29 (4:30 p.m.) 1,900 cfs (4.79 ft); Feb. 16 (4 a.m.) 2,910 cfs (5.76 ft); Apr. 20 (11 p.m.) 3,300 cfs (6.08 ft). * Discharge measurement made on this day. 76 DESCHUTES RIVER BASIN

1030. Deschutes River at Moody, near Biggs, Oreg.

Location. Lat 45°37'20", long 120°54 t 05", in SE£ sec. 26, T. 2 N., R. 15 E., on right bank at Moody, 1 mile upstream from mouth and 4 miles southwest of Biggs. Drainage area. 10.500 sq mi, approximately. Reeorde available. October 1897 to December 1899, July 1906 to September 1958. Pub- lished as "near Moro" 1897-99. Gage. Water-stage recorder. Datum of gage is 167.43 ft above mean sea level, datum of 1929. October 1897 to December 1899, staff gage 10 miles upstream at different datum. July 1906 to July 1930, staff gage at site 300 ft downstream at datum 0.5 ft lower. Average discharge.--54 years, 5,872 cfs (4,251,000 acre-ft per year). Extremes. Maximum discharge during year, 17,900 cfs Feb. 16 (gage height, 6.00 ft); min- ImumT 2,400 cfs Dec. 5 (gage height, 1.78 ft). 1897-99, 1906-58: Maximum discharge, 43,600 cfs Jan. 7, 1923 (gage height, 10.2 ft, site and datum then in use), from rating curve extended above 15,000 cfs: minimum, that of Dec. 5, 1957. Remarks.--Records excellent. Some fluctuation caused by regulation at Pelton Reservoir. Many diversions for irrigation in upper river basin. Some winter and spiring runoff stored in Ochoco Reservoir (capacity, 47,500 acre-ft) and in Crescent Lake, Crane Prairie, and Wickiup Reservoirs (see p. 60). Cooperation.--Water-stage recorder inspected by agent of Eastern Oregon Land Co. Revisions. WSP 754: Drainage area.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Feb. 14-27) 1.9 2,740 3.0 5,860 4.0 9,400 6.0 18,600 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 5,200 5,120 3,240 6,570 11,900 11,200 7,480 7,080 7,050 5,550 4,700 4,700 2 5,200 5,120 3,190 6,340 9,840 10,300 7,550 6,910 *7,050 57535" 4,620 4,640 3 5,100 5,120 2,960 5,860 8,980 9,600 7,480 7,510 6,840 5,500 4,750 4,670 4 5,200 *5,150 2,880 6,170 7,870 9,520 7,190 7,690 7,160 5,470 4,760 4,700 5 5,100 5,180 2,960 5,650 7,620 9,400 6,600 7,620 6,740 5,500 4,750 4,620 6 5,200 5,180 3,160 5,860 7,550 9,100 6,550 7,690 7,950 5,500 4,760 4,620 7 5,200 5,150 3,860 5,210 7,510 8,800 77355" 7,730 8,150 5,210 4,700 4,600 8 5,200 5,180 6,000 5,650 7,770 8,690 6,940 7,910 7,860 5,210 4,760 4,600 9 5,400 5,150 6,110 5,650 8,060 8,170 6,700 8,060 7,050 5,150 4,750 4,600 10 5,600 5,180 5,040 5,710 8,280 *8,100 7,080 8,020 7,020 5,120 4,750 4,700 11 5,240 5,180 4,860 5,680 8,390 8,100 7,370 7,980 6,880 4,950 4,670 4,600 12 5,120 5,210 6,400 5,920 10,600 7,770 7,730 7,690 6,740 4,950 4,670 4,600 13 5,100 5,440 3,520 6,640 11,300 7,730 8,280 7,870 6,600 4,950 4.840 4,500 14 5,150 5,710 5,110 6,340 10,500 7,510 8,760 7,950 6,340 4,840 4,S96 4,666 15 5,150 5,476 5,270 6,470 10,800 7,800 9,060 7,080 6,140 4,900 4,620 4,600 16 5,070 5,390 *5,400 7,230 17.000 7,660 10,400 7,080 5,890 4,870 4,620 4,700 17 5,040 5,360 5,740 7,080 I5,6o6 7,510 9,600 6,880 5,850 *4, 700 4,640 4,800 18 4,980 5,390 4,310 6,700 16,800 7,120 8,350 6,910 5,740 4,870 4,590 4,900 19 4,980 5,390 *4,360 7,050 *16,400 6.910 9,880 6,980 5,590 4,840 4,640 4,766 20 4,980 5,360 6,560 7,300 16,000 7,590 11,000 7,050 5,710 4,900 4,640 4,600 21 4,980 5,330 9,880 6,670 * 14, 800 7,510 *12.900 7,120 5,710 4,840 4,590 4,700 22 4,920 5,270 6,810 6,140 14,200 7,020 12,660 7,050 5,740 4,870 4,620 4,600 23 5,010 5,270 5,950 6,240 13,500 6,980 11,600 7,050 5,680 4,810 4,640 4,500 24 5,040 5,240 6,840 6,500 *13,300 7,230 10,900 6,840 5,680 4,620 4,640 4,500 25 5,070 5,070 7,080 6,600 14,100 7,590 9,400 8,150 5,980 4,816 4.560 4,500 26 5,100 4,900 7,260 6,240 14,400 7,410 8,580 7,690 6,270 4,670 4,640 4,560 27 4,980 4,870 7,510 5,980 15,600 7,980 7,910 7,230 6,080 4,640 4,560 4,560 28 4,840 4,670 6,170 6,200 13,100 7,370 7,840 7,300 5,860 5,100 *4,640 4,640 29 5,150 4,480 7,620 8,430 7,440 7,550 7,050 5,590 4,640 4,640 4,500 30 5,150 5,890 7,440 *12, 200 7,370 7,120 6,770 5,470 4,750 4,620 4,500 31 5,120 7,050 12,200 7,480 6,916 4,700 4,620 Tota] 158,570 154,420 170,540 208,480 331,770 249,960 257,430 228,830 192,510 154,520 144,510 158,610 Mean 5,115 5,147 5,501 6,725 11,850 8,063 8,581 7,382 6,410 4,985 4,662 4,620 Ac-ft 314,500 306,300 338,300 413,500 658,100 495,800 510,600 453,900 581,400 506,500 286,600 274,900 Calendar year 1957 : Max 13,800 Min 2,880 Mean 6,165 Ao-ft 4,463,000 Water year 1957-58 : Max 17,000 Min 2,880 Mean 6,548 Ac-ft 4,740,000 * Discharge measurement made on this day. Note. No gage-height record Oct. 1-10, Sept. 7-24, 29, 50; discharge estimated on basis of records for upstream stations. COLUMBIA RIVER MAIN STEM 77

1057. Columbia River at The Dalles, Oreg.

Location (revised) . La t 45°36'10", long 121 010'40", in NWi sec. 3, T. IN., R. 13 E., at upstream end of port of The Dalles dock at The Dalles, 3.2 miles downstream from The Dalles Dam and at mile 189.3. Drainage area. 237.000 sq mi, approximately. Records available.--June 1878 to September 1958. Published as "near The Dalles" 1936-56. Maximum discharge only for each year in period 1858 to 1877 at Lower Cascades Landing, published in'WSP 1318. Gage. Water-stage recorder. An auxiliary water-storage recorder is located 19.3 miles downstream at Hood River. Datum of both gages is at mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Oct. 1, 1931, records based on staff gage near present site at datum 46.98 ft higher, supplemented for a few short periods by gage-height records at Umatilla and Cascade Locks. Oct. 1, 1931, to May 1, 1935, staff gage in entrance to Celilo Canal 11.6 miles upstream at datum 37.71 ft higher. May 2, 1935, to Mar. 15, 1957, water-stage recorder at site 11.7 miles upstream at datum 0.12 ft higher. Average discharge.--80 years, 195,100 cfs (141,200,000 acre-ft per year). Extremes. Maximum discharge during year, 593,000 cfs May 31 (gage height, 92.26 ft); mln- imum daily, 80,000 cfs Nov. 20. 1858-1958: Maximum discharge, 1,240,000 cfs June 6, 1894 (gage height, 59.6 ft, site and datum then in use); minimum observed, 35,000 cfs Jan. 12, 1937 (gage height, 126.0 ft, site and datum then in use). Remarks.--Records excellent. Some regulation by Franklin D. Roosevelt Lake and by reser voirs in Kootenai, Flathead, Pend Oreille, Spokane, Chelan, Yakima, and Snake River basins. Diurnal fluctuations caused by powerplant and gates at The Dalles Dam. Many diversions for irrigation above station. Revisions (water years). WSP 534: 1920(m). WSP 1094: 1894. WSP 1248: 1866, 1888-89, 1909.WSP 151B:Tff76(M).

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 89,000 96,000 95,000 92,000 124,000 196,000 158,000 239,000 569,000 298,000 146,000 102,000 2 95,000 100,000 90,000 95,000 116,000 188,000 156,000 235,000 *568,000 298,000 146,000 100,000 3 93,000 94,000 92,000 88.000 116,000 184,000 164,000 239,000 573,000 278,000 146,000 100,000 4 97,000 95,000 94,000 88^000 110,000 178,000 162,000 216,000 556,000 274,000 142,000 96,000 5 104,000 97,000 82,000 91,000 108,000 166,000 158,000 250,000 548,000 268,000 146,000 96,000 6 104,000 94,000 102,000 94,000 106,000 164,000 152,000 271,000 540,000 258,000 144,000 96,000 7 100,000 100,000 97,000 93,000 104,000 168,000 158,000 264,000 533,000 254,000 140,000 95,000 e 104,000 100,000 97,000 97,000 102,000 162,000 170,000 273,000 523,000 *244,000 134,000 95,000 9 106,000 94,000 93,000 102,000 110,000 140,000 166,000 282,000 506,000 230,000 128,000 95,000 10 99,000 91,000 92,000 100,000 112,000 144,000 *172, 000 306,000 493,000 216,000 114,000 95,000 11 116,000 94,000 94,000 100,000 112,000 152,000 164,000 325,000 503,000 204,000 112,000 96,000 12 98,000 92,000 102,000 99,000 116,000 144,000 174,000 321,000 501,000 206,000 112,000 96,000 13 94,000 92,000 100,000 97,000 130,000 144,000 180,000 331,000 495,000 206,000 112,000 98,000 14 99,000 108,000 102,000 96,000 134,000 148,000 184,000 340,000 493,000 196,000 106,000 96,000 15 104,000 92,000 89,000 106,000 138,000 152,000 160,000 340,000 505,000 196,000 106,000 94,000 16 97,000 102,000 86,000 110,000 152,000 154,000 202,000 352,000 493,000 194,000 114,000 17 104,000 104,000 82,000 112,000 156,000 160,000 204,000 371,000 465,000 176,000 116,000 18 106,000 97,000 83,000 100,000 164,000 144,000 208,000 408,000 448,000 170,000 118,000 93)000 19 104,000 92,000 96,000 100,000 164,000 148,000 249,000 445,000 432,000 168,000 122,000 94,000 20 102,000 80,000 108,000 106,000 188,000 144,000 269,000 450,000 *4O6,000 166,000 120,000 94,000 21 104,000 102,000 110,000 100,000 192,000 142,000 272,000 485,000 383,000 166,000 116,000 96,000 22 106,000 96,000 106,000 102,000 198,000 134,000 326,000 *514,000 371,000 170,000 116,000 97,000 23 90,000 94,000 108,000 104,000 198,000 128,000 311,000 543,000 372,000 *166,000 116,000 96,000 24 97,000 97,000 112,000 106,000 196,000 126,000 296,000 536,000 369,000 160,000 114,000 99,000 25 99,000 99,000 110,000 104,000 192,000 120,000 276,000 534,000 347,000 162,000 112,000 94,000 26 100,000 95.OOO 100,000 112,000 208,000 128,000 255,000 534,000 *345,000 162,000 110,000 96,000 27 100,000 87,000 95,000 90,000 222,000 140,000 253,000 550,000 344,000 158,000 112,000 98,000 28 99,000 96,000 93,000 93,000 202,000 152,000 230,000 562,000 320,000 154,000 108,000 98,000 29 93,000 91,000 92,000 96,000 148,000 243,000 578,000 306,000 150,000 106,000 102,000 30 85,000 89,000 92,OOO 108,000 156,000 235,000 584,000 296,000 146,000 104,000 102,000 31 98,000 102,000 118,000 162,000 583,000 144,000 102,000 Total *3,086 *2,860 *2,996 *3,099 *4,170 *4,716 *6,307 *12,261 *13,603 *6,238 *3,740 *2,896 Mean 99,550 95,330 96,650 99,970 148,900 152,100 210,200 395,500 453,400 201,200 120,600 96,530 Ao-ft *6,121 *5,673 *5,942 *6,147 *8,271 *9,354 *12,510 *24,320 *26,980 *12,370 *7,418 *5,744 Calendar year 1957: Max 700,000 Mln 77,000 Nean 190,700 Ac-ft 138,100,000 Water year 1957-58; Max 584,000 Mln 80,000 Mean 180,700 Ac-ft 130,800,000 * Discharge measurement made on this day. * Expressed in thousands. Note. Stage-discharge relation affected by backwater from Bonneville Dam, during the unrated period Oct. 1 to Apr. 18, July 6 to Sept. 30; discharge computed on basis of 3 discharge measure ments and unpublished records for station below McNary Dam, near Umatilla, adjusted for inflow. 78 KLICKITAT RIVER BASIN

1070. Klickitat River above West Pork, near Glenwood, Wash.

Location. Lat 46°15'40", long 121°14'30", in S| sec. 18, T. 9 N., R. 13 E. , on right bank half a mile upstream from Swamp Creek, ljr miles upstream from West Fork, and 17 miles north of Glenwood. Drainage area. 151 sq mi. Records available. October 1944 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage.--Water-stage recorder. Altitude of gage is 2,720 ft (from river-profile map). Average discharge. 14 years, 347 cfs (251,200 acre-ft per year). Extremes. Maximum discharge during year, 1,830 cfs May 23 (gage height, 3.43 ft); mini mum, 57 cfs Nov. 21 (gage height, 0.89 ft). 1944-58: Maximum discharge, 3,280 efs May 27, 1948 (gage height, 4.28 ft); mini mum, 4.4 cfs Feb. 1, 1957 (result of freezeup, discharge measurement); minimum gage height recorded, that of Nov. 21, 1957. Remarks. Records good. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Stage-discharge relation affected by Ice Dec. 30 to Feb. 3) Oct. 1 to Feb. 25 Feb. 26 to Sept. 30 1.0 78 1.0 78 2.5 860 1.3 154 1.3 160 3.0 1,320 1.6 265 1.6 275 3.5 1,930 2.0 475 2.0 490 2.5 825 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 80 98 115 115 142 394 235 732-6O9 932 259 123 92 2 80 93 1O8 135 140 350 239 892 251 TSo 90 3 82 93 100 130 140 330 227 *820 860 243 120 87 4 82 89 96 115 137 302 215 852 820 235 120 90 5 89 87 93_ 110 134 293 211 876 868 231 117 87 6 91 87 115 110 131 271 211 958 958 257 114 85 7 91 87 187 110 13T 263 215 1,090 844 *340 112 83 8 93 85 170 110 140 247 215 1,240 764 255 109 80 9 91 82 151 108 151 235 219 1,360 700 235 106 80 10 89 89 140 n? 157 227 243 1,440 672 227 106 80 11 85 108 137 118 151 211 275 1,430 630 211 104 78 12 82 112 134 112 151 207 306 1,180 581 203 *101 80 13 89 148 *125 108 154 195 365 1,020 574 192 101 85 14 89 T3T 125 108 151 188 388 967 546 188 99 92 15 85 110 118 134 151 188 382 1,000 511 181 96 114 16 82 98 118 161 151 181 394 1,100 490 174 94 99 17 82 98 118 174 161 178 442 1,230 484 167 94 104 18 82 96 118 TfO 220 174 46 O 1,300 478 170 94 101 19 80 93 118 170 236 167 482 1,460 466 174 92 96 20 78_ 80 142 164 240 TBT 1.000 1,540 448 160 92 101 21 78 80 128 157 249 174 908 1,540 442 154 90 96 22 82 96 118 *148 270 184 772 1,610 412 154 87 96 23 142 96 112 148 296 188 665 1,720 388 150 87 92 24 T2F 93 115 174 570 235 588 1,660 388 144 85 94 25 *131 96 131 157 758 235 539 1,750 355 141 85 94 26 118 98 213 148 665 227 484 1,590 330 138 85 92 27 108 85 170 145 553 227 454 1,560 320 141 90 92 28 102 96 161 161 *460 227 442 1,440 306 134 92 90 29 98 85 148 157 - 235 454 *1,220 284 134 94 *87 30 100 93 130 154 239 504 1,080 271 128 101 87 31 102 110 145 *235 1,010 TLeo f}Q 94 Total 2,888 2,882 4,064 4,268 6,990 7,184 12,534 38,384 17,014 5,899 3,104 2,724 Mean 93.2 96.1 131 138 250 232 418 1,238 567 190 100 90.8 Cfsm 0.617 0.636 0.868 0.914 1.66 1.54 2.77 8.20 3.75 1.26 0.662 0.601 In. 0.71 0.71 1.00 1.05 1.72 1.77 3.09 9.45 4.19 1.45 0.76 0.67 Ao-ft 5,730 5,720 8,060 8,470 13,860 14,250 24,860 75,130 33,750 11,700 6,160 5,400 Calendar year 1957: Max 1,880 Mln 4.5 Mean 262 Cfsm 1.74 In. 23.57 Ac-ft 189,800 Water year 1957-58: Max 1,750 Mln 78 Mean 296 Cfsm 1.96 In. 26.57 Ac-ft 214,100 Peak discharge (base, 700 cfs). Feb. 25 (6 a.m.) 788 cfs (2.45 ft); Apr. 20 (5:3O p.m.) 1,040 cfs (2.71 ft); May 10 (11 p.m.) 1,590 cfs (3.24 ft); May 23 (8 p.m.) 1,830 cfs (3.43 ft). * Discharge measurement made on this day. KLICKITAT RIVER BASIN 79

1100. Klickitat River near Glenwood, Wash.

Location. Lat 46 005'20", long 121 015'30", in SE^ sec. 14, T. 7 N., R. 12 E., on left bank half a mile downstream from Dairy Creek, 5 miles north of Glenwood, and 7 miles upstream from Trout Creek. Drainage area. 360 sq mi. Records available. June to September 1905 and July 1907 to June 1908 (discharge measurements only) October 1909 to October 1956, November 1956 to June 1957 (monthly dis charge only), July 1957 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Prior to Oct. 29, 1909, published as "above and below Big Muddy River, near Klickitat." Gage. Water-stage recorder. Datum of gage is 1,703 ft above mean sea level, datum of 1929. Prior to July 19, 1910, staff gages and July 19 to Dec. 16, 1910, water-stage recorder, at site 15 miles upstream at different datum. Dec. 17, 1910, to Sept. 30, 1918, water-stage recorder at datum 1.50 ft higher and Oct. 1, 1918, to Nov. 6, 1928, water-stage recorder at datum 0.50 ft higher, at site 50 ft downstream. Nov. 7, 1928, to Sept. 30, 1934, at present site at datum 1 ft higher. Average discharge. 49 years (1909-58), 847 cfs (613,200 acre-ft per year). Extremes.--Maximum discharge during year, 3,700 cfs May 23 (gage height, 5.97 ft); mini mum, 330 cfs Nov. 29 (gage height, 2.50 ft). 1909-58: Maximum discharge, 9,870 cfs Dec. 22, 1933 (gage height, 7.9 ft, present datum), from rating curve extended above 2,000 cfs; minimum, 204 cfs Nov. 28, 1931. Remarks. Records excellent. All low-water flow of Hellroaring Creek, a tributary of Big Muddy Creek, is diverted for irrigation of about 7,000 acres below station in the vicinity of Glenwood. No regulation. Revisions (water years). WSP 1398: 1927.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 25 Feb. 26 to Sept. 30 2.5 330 4.0 1,410 2.6 360 4.0 1,250 3.0 580 5.0 2,480 3.0 540 4.0 2,360 3.5 950 3.5 840 6.0 2,750 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 374 397 460 445 568 1.160 705 1,580 2,060 819 555 400 2 366 392 435 492 544 *1,090 750 1,670" 1,960 805 550 392 3 358 384 415 450 538 1,010 718 1,740 1,890 798 555 572 4 354 379 410 420 520 942 681 1,810 1,780 805 525 564 5 384 374 406 402 509 910 657 1,850 1,860 812 500 355 6 379 379 505 402 498 847 651 2,010 2.140 835 505 372 7 379 374 612 397 520 819 657 2,200 1,980 1,020 555 588 8 388 370 544 402 556 777 657 2,460 1,800 *868 585 409 9 384 362 492 397 638 738 663 2,710 1,690 819 612 452 10 370 384 470 410 673 705 693 2,830 1,600 805 606 422 11 362 440 450 415 652 681 757 2,920 1,510 791 606 400 12 366 470 445 430 687 663 819 2,530 1,430 757 *530 596 13 415 562 *425 402 673 634 918 2,200 1,410 750 500 596 14 397 56T 425 420 645 618 966 2,060 1,380 731 481 409 15 379 455 415 514 632 606 974 2,100 1,350 695 486 456 16 366 420 415 556 659 585 990 2,300 1,340 675 472 422 17 362 415 425 600 775 585 1,130 2,540 1,550 681 458 436 18 358 410 425 568 1,090 565 1,170 2,680 1,560 687 458 427 19 354 406 476 550 1,080 555 1,230 2,960 1,550 687 454 452 20 354 379 532 550 1,020 BBS 2,170 3,120 1,550 651 458 452 21 350 370 487 520 995 570 2,040 3,130 1,350 651 454 452 22 362 406 445 *509 1,050 590 1,790 3,270 1,500 651 450 427 23 504 402 430 520 1,080 606 1,600 5.520 1,220 625 465 418 24 492 397 440 593 1,780 718 1,450 3,420 1,180 580 465 414 25 *556 402 542 550 2,220 731 1,360 3,480 1,060 555 468 414

26 465 406 6T2"752 520 1,790 699 1,270 5,270 990 570 465 414 27 420 388 532 1,520 693 1,200 5,250 966 596 452 414 28 406 402 593 645 1,360 693 1,160 3,020 905 612 409 418 29 397 3-9?358 550 673 - 705 1,150 *2,620 861 606 596 414 30 430 492 b£>£.Ago *724 1,220 2,550 847 565 409 400 31 415 415 638 693 2,240 550 400 Total 12,246 12,179 14,940 15,574 25,272 22,487 32,196 79,520 45,247 22,046 15,218 12,270 Mean 395 406 482 502 903 725 1,073 2,565 1,442 711 491 409 Cfsm 1.10 1.13 1.34 1.39 2.51 2.01 2.98 7.12 4.01 1.98 1.56 1.14 In. 1.27 1.26 1.54 1.61 2.61 2.32 3.33 8.21 4.47 2.28 1.57 1.27 Ac-ft 24,290 24,160 29,630 30,890 50,130 44,600 63,860 157,700 85,780 43,750 50,180 24,340 Calendar year 1957: Max - Min - Mean 742 Cfsm 2.06 In. 27.99 Ac-ft 537,400 Water year 1957-58: Max 3,520 Min 350 Mean 842 Cfsm 2.34 In. 31.74 Ac-ft 609,300

Discharge measurement made on this day. 80 KLICKITAT RIVER BASIN

1120. Little Klickitat River near Goldendale, Wash.

Location. Lat 45°48'45", long 120°46'50", in SVl£ sec. 10, T. 4 N., R. 16 E. , on left bank 14 ft upstream from highway bridge, 2| miles northeast of Goldendale, 7f miles down stream from Emerson Creek, and 13 miles upstream from mouth. Drainage area. 78 sq mi, approximately. Records available. October 1910 to June 1912, October 1946 to September 1951, October 1957 to September 1958. Gage. Staff gage and crest-stage indicator; gage read once or twice daily. Altitude of gage is 1,690 ft (by altimeter). Prior to July 1, 1912, staff gage on highway bridge at different datum. Oct. 21, 1946, to Feb. 11, 1951, water-stage recorder at site 60 ft downstream at different datum, destroyed by flood of Feb. 11, 1951. Apr. 11 to Sept. 30, 1951, staff gage just below highway bridge at different datum. Average discharge.--7 years (1910-11, 1946-51, 1957-58), 71.0 cfs (51,400 acre-ft per year). Extremes. Maximum discharge during year, 1,020 cfs Feb. 15 (gage height, 4.94 ft); minimum observed, 1.2 cfs Aug. 23, 24, 26 (gage height, 0.92 ft). 1910-12, 1946-51, 1957-58: Maximum discharge, 1,760 cfs Jan. 7, 1948 (gage height, 5.55 ft, site and datum then in use), from rating curve extended above 665 cfs; mini mum, 0.6 cfs Aug. 28, 1947. Remarks. Records excellent except those for period October to February, which are good. Several small diversions for domestic use and irrigation above station. No regulation. Revisions (water years). WSP 1318: 1911.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 0.9 1.1 1.7 3.5 360 1.0 2.2 2.1 4.0 550 1.2 6.1 2.5 126 4.5 780 1.4 12.5 3.0 222 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 4 4.8 9.0 76 272 200 89 95 12 3.3 1,9 2 4 4.4 9.6 68 222 IFF 94 95 ti TT 3^3 2.1 3 4 4.4 9.0 68 200 150 88 98 43 11.5 2.6 2.1 4 4 4.0 8.4 62 172 133 78 95 41 10 2.7 2.2 5 4.5 4.2 8.4 46 154 124 74 95 37 9.6 2.6 1.9 6 5 4.2 8.7 41 133 mo 73 95 37 9.0 2.4 1.9 7 5 4.4 32 37 154 101 73 95 35 9.3 2.2 1.9 8 4.5 4.4 32 34 140 92 73 98 34 9.9 2.4 1.4 9 4.5 4.2 33 29 170 84 68 loo 31 *9.0 2.1 1.8 10 4.5 4.2 23 29 192 74 71 101 29 8.4 2.2 1.8 *1.6 11 4.5 5.2 20 35 176 71 72 -98104 28 7.8 1.6 12 4.5 7.8 18.5 170 367 67 74 27 7.2 1.6 1.8 13 4.5 32 17 110 342 60 78 84 24 6.6 1.6 2.6 14 4.5 TT.5 *17 118 278 55 84 81 23 6.6 1.9 2.2 15 4.5 12.5 15.5 227 434 56 81 71 22 5.9 1.8 2.9 16 4.5 10 15.5 262 545 52 *87 71 19.5 5.6 1.8 3.3 17 4.5 9.6 15.5 360 516 54 113 73 19 5.4 1.6 4^0 18 4.5 8.7 16.5 246 572 50 106 74 18 5.6 1.9 3.5 19 4.5 8.7 67 186 450 46 101 82 17 5.6 1.9 3.3 20 4.5 8.1 101 161 381 48 256 84 16.5 5.2 1.6 3.3 21 4.5 6.1 81 140 342 55 215 81 16 5.2 1.6 3.3 22 4.5 7.8 56 123 283 61 192 84 15 4.8 1.5 3.5 23 6 7.5 48 *112 289 61 169 84 13.5 4.8 1.4 3.3 24 6.5 7.8 52 213 375 68 154 81 15.5 4.4 1.4 3.3 25 6.5 7.5 141 200 469 68 134 78 14.5 4.0 1.4 3.3 26 7 7.8 213 170 342 68 123 77 13.5 3.8 1.3 3.3 27 6.4 6.6 143 167 267 67 123 76 13.5 3.8 TT4 3.3 28 5.6 7.5 2OO 300 222 69 112 *71 12.5 3.6 1.9 2.9 29 5.2 6.6 170 561 72 100 62 T2T5 3.3 2.2 *2.9 30 5.2 8.4 126 72 94 54 12 5 3T6 2.2 2*9 31 4.8 95 402 68 54 3.6 2.2 Total 151.2 236.9 1,801.6 5,279 8,459 2,513 3,249 2,591 734.0 206.1 61.6 79.5 Mean 4.88 7.90 58.1 170 302 81.1 108 83.6 24.5 6.65 1.99 2.65 Cfsm 0.063 0.101 0.745 2.18 3.87 1.04 1.38 1.07 0.314 0.085 0.026 0.034 In. 0.07 0.11 0.86 2.52 4.03 1.20 1.55 1.24 0.35 0.10 0.03 0.04 Ac-ft 3OO 470 3,570 1O.47O 16,780 4,980 6,440 5,140 1,460 409 122 158 Calendar year 1957: Max - Min - Mean - Cfsm - In. - Ac-ft - Water year 1957-58: Max 572 Mln 1.3 Mean 69.5 Cfsm O.891 In. 12. O9 Ac-ft 5O,3OO Peak discharge (base. 500 cfs).--Jan. 29 (time unknown) 694 cfs (4.32 ft); Feb. 15 (time unknown) 1,020 cfs (4.94 ft); Feb. 18 (time unknown) 716 cfs (4.37 ft); Feb. 25 (time unknown) 649 cfs (4.22 ft).______* Discharge measurement made on this day. Note. No gage-height record Oct. 1-26; discharge estimated on basis of records for station near wahkiacus. KLICKITAT RIVER BASIN 81

1125. Little Klickitat River near Wahkiacus, Wash.

Location Lat 45°50'30", long 121°03'20", in SE£ sec. 9, T. 4 N., R. 14 E., on right bank half a mile downstream from Bowman Creek, three-quarters of a mile upstream from mouth, and 2 miles northeast of Wahkiacus. Drainage area. 280 sq mi, approximately. Records available. November 1944 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 576.2 ft above mean sea level (river- profile survey). Prior to Dec. 29, 1950, staff gage and crest-stage Indicator at same site and datum. Average discharge. 13 years (1945-58), 203 cfs (147,000 acre-ft per year). Extremes.--Maximum discharge during year, 2,830 cfs Feb. 16 (gage height, 6 87 ft): min- HumT 23 cfs Aug. 26, 27 (gage height, 2.47 ft). 1944-58: Maximum discharge, 7,000 cfs Jan. 7, 1948 (gage height, 9.4 ft, from high-water mark), from rating curve extended above 2,600 cfs; minimum observed, 17 cfs Aug. 3-6, 11, 16-27, Aug. 29 to Sept. 3, 1945, Aug. 30, 1947, Sept. 5, 6, 1955; mini mum gage height observed, 1.24 ft Aug. 25, 26, 27, 1945. Remarks Records excellent. Some small diversions above station for irrigation. No regulation. Revisions (water years). WSP 1248: Drainage area. WSP 1348: 1945(M), 1946, 1947(M), 1948.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30 2.6 34 2.47 23 4.5 505 3.0 74 3.0 74 5.0 810 3.5 156 6.0 1,760 Note. Same as 4.0 290 following table above 3.0 ft.

Discharge, In cubic feat per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 36 42 54 167 691 495 251 220 123 52 26 28 2 3S 41 58 154 577 43tJ 357 223 us TO 26 26 3 37 *41 49 136 500 414 270 223 110 49 25 2S 4 37 41 47 123 428 378 242 228 105 46 26 28 5 45 i°. 46 115 392 361 225 225 100 44 il 28 6 46 40 52 107 349 *325 218 223 112 44 26 28 7 45 41 62 102 m 311 212 231 104 43 25 28 8 42 40 74 96 374 290 212 240 99 42 25 28 9 42 40 69 94 475 274 200 245 96 *40 26 28 10 40 41 63 5S 475 257 197 242 92 39 26 29 11 39 42 59 136 498 242 195 248 86 37 25 27 12 39 47 57 640 1,330 234 155 231 83 36 24 28 13 42 79 55 419 789 218 197 212 79 36 24 30 14 43 5S *55 361 670 210 205 200 77 36 24 31 15 41 55 54 768 1,080 207 202 188 73 35 24 32 16 39 50 59 540 1.630 197 *202 183 69 32 25 34 17 40 48 65 719 1,260 200 220 180 66 32 26 36 18 40 46 60 490 1,310 190 234 178 65 32 25 35 19 40 46 206 401 1,010 180 223 183 62 32 24 35 20 40 46 333 353 842 178 466 185 59 32 *24 35 21 39 43 212 297 726 205 442 178 57 32 24 36 22 41 44 156 264 652 248 378 176 56 32 24 36 23 51 44 122 *287 610 210 341 174 55 32 24 36 24 51 45 174 610 796 280 329 167 56 32 25 36 25 54 44 250 495 1,020 228 308 169 58 31 24 36 26 52 44 396 719 212 374 158 56 30 23 35 27 47 42 SIT4?£ 432 622 207 280 156 55 29 25 35 28 45 43 4 SO 754 550 202 245 *150 52 29 24 *33 29 43 41 370 1.590 205 225 140 51 28 24 33 30 42 41 267 906 210 220 131 54 27 26 33 31 42 200 1,110 202 TSI ST 27 Total 1,316 1,363 4,634 12,958 20,799 8,020 7,765 6,024 2,328 1,118 771 949 Mean 42.5 45.4 149 418 743 259 259 194 77.6 36.1 24.9 31.6 Ac-ft 2,610 2,700 9,190 25,700 41,250 15,910 15,400 11,950 4,620 2,220 1,530 1,880 Calendar year 1957: Max 1,400 Mln 34 Mean 132 Ae-ft 95,330 Water year 1957-58: Max 1,630 Mln 33 Mean 186 Ac-ft 135,000

Peak discharge (base. 1,600 cfs). Jan. 29 (2 p.m.) 2,480 efs (6.60 ft);; Feb. 12 (3:30 a.m.) 1,760 cfs (6.00 ft)j Feb. 16 (2 a.m.) 2,830 efs (6.87 ft). * Discharge measurement made on this day. 82 KLICKITAT RIVER BASIN

1130. Klickitat River near Pitt , Wash.

Location. Lat 45°45'30", long 121°12'30", in SWir sec. 8, T. 3 N., R. 13 E., on left bank 3i miles south of Pitt, 5 miles upstream from Silvias Creek, and 7 miles upstream from mouth at Lyle . Drainage area. 1,290 sq mi, approximately. Records available . July 1909 to January 1912, October 1928 to September 1958. Published as "at Klickitat" 1909-12 and as "at Pitt" 1928-35. Gage . Water-stage recorder. Datum of gage is 288.9 ft above mean sea level (river- profile survey). July 3, 1909, to Jan. 31, 1912, staff gage at Klickitat just down stream from Snider Creek, 7 miles upstream at different datum. Oct. 1, 1928, to Sept. 30, 1935, staff gage at site 175 ft downstream from highway bridge at Pitt, 3.5 miles upstream from present site at different datum. Average discharge. --32 years (1909-11, 1928-58), 1,596 cfs (1,155,000 acre-ft per year). Extremes. Maximum discharge during year, 7,410 cfs Feb. 16 (gage height, 7.78 ft); minimum, 650 cfs Nov. 29 (gage height, 3.83 ft). 1909-12, 1928-58: Maximum discharge, 25,500 cfs Dec. 22, 1933 (gage height, 12.50 ft, site and datum then in use, from graph based on gage readings), from rating curve extended above 3,400 cfs on basis of velocity-area study and gage-height curve of relation; minimum, 466 cfs Feb. 4, 1937. Remarks . Records excellent. Several small diversions above station for irrigation of about 7,500 acres mostly in vicinity of Glenwood. Measured flow of Hellroaring Irriga tion Canal, 73.2 cfs Aug. 25, 1948. No regulation. Revisions (water years) . WSP 1218: Drainage area. WSP 1348: 1910(M), 1929-33(M), 1934, 1935-38(M), 1940(M), 1942-43(M), 1946(M) , 1948(M) . Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 3.8 625 4.4 1,200 5.0 1,950 6.0 3,530 7.5 6,700 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 773 773 809 1,330 3,780 5.510 1,890 2,580 2,670 ,230 900 746 2 773 755 827 1,220 3,220 3,210 2,320 2,560 2,500" ,210 890 728 3 755 *737 782 1,240 2,920 3,020 2,240 2,680 ,460 ,200 920 719 4 737 737 773 1,140 2,620 2,810 2,060 2,780 ,340 ,200 890 702 5 791 728 755 1,080 2,400 2,750 1,950 2,840 ,340 ,200 854 710 6 800 728 800 1,050 2,260 *2,520 1,910 2,920 ,650 ,220 854 702 7 800 719 1,110 1,020 2,360 2,390 1,870 3,140 ,600 .570 872 710 8 800 719 1,020 990 2,390 2,270 1,840 3,290 ,380 ,310 930 755 9 800 719 980 ?70"960 2,670 2,140 1,810 3,600 ,260 * ,220 960 800 10 791 728 910 2,990 2,030 1,810 3,730 ,140 ,200 970 791 11 782 800 881 1,040 3,000 1,940 1,840 3,910 ,050 ,180 970 755 12 762 863 863 1,980 4,750 1,880 1,910 3,550 ,950 ,160 920 746 13 809 370"980 827 1,800 4,100 1,780 1,990 3,120 ,880 ,130 854 755 14 809 *818 1,710 3,620 1,710 2,090 2,880 ,850 ,120 827 755 15 800 881 827 2,590 4,020 1,680 2,080 2,840 ,820 ,090 827 809 16 773 818 845 2,330 5,900 1,640 2,090 2,990 ,780 ,060 827 800 17 775 791 845 2,570 5,220 1,650 *2,120 3,240 ,780 ,040 791 809 18 775 782 881 2,300 5,970 1,590 2,400 3,360 ,780 ,050 800 800 19 737 782 1,230 2,090 5,160 1,540 2,320 3,620 ,770 ,060 782 800 20 728 755 1,770 1,980 4,490 1,510 3,800 3,910 ,740 ,040 *809 800 21 719 719 1,500 1,840 3,980 1,550 5,970 3,840 ,780 ,030 800 800 22 728 719 1,310 1,720 3,710 1,720 3,550 3,950 ,740 ,030 800 791 23 836 737 1,140 *1,770 3,550 1,600 3,220 4,120 ,670 ,020 809 791 24 960 728 1,280 2,750 3,450 1,990 3,000 4,160 ,640 980 809 773 25 1550" 728 1,500 2,600 6,080 1,920 2,810 4.190 ,540 940 818 773 26 940 746 2.620 2,330 5,110 1,810 2,590 4,040 ,420 920 818 764 27 845 719 2,010 2,320 4,310 1,780 2,480 4,000 ,420 960 800 764 28 800 719 2,220 3,310 3,870 1,770 2,340 *3,750 ,350 980 755 *764 29 782 693 2,030 4,850 1,760 2,270 3,360 ,290 990 728 764 30 791 TOT 1,730 4,450 1,870 2,270 2,990 ,240 960 7S4 746 31 791 1,430 4,780 1,780 2, 860 910 746 Total 24,684 22,975 37,323 64,220 108,900 63,120 70,840 104,600 57,830 34,010 26,094 22,922 Mean 796 766 1,204 2,072 3,889 2,036 2,361 3,374 1,928 1,097 842 764 Cfsm 0.617 0.594 0.933 1.61 3.01 1.58 1.83 2.62 1.49- 0.850 0.653 0.592 In. 0.71 0.66 1.08 1.85 3.14 1.82 2.04 3.02 1.67 0.98 0.75 0.66 Ac-ft 48,960 45,570 74,030 127,400 216,000 125,200 140,500 207,500 114,700 67,460 51,760 45,470 Calendar year 1957: Max 5,310 Min 673 Mean 1,416 Cfsm 1.10 In. 14.89 Ac-ft 1,025,000 Water year 1957-58: Max 6,080 Min 693 Mean 1,747 Cfsm 1.35 In. 18.38 Ac-ft 1,265,000 Peak discharge (base 4,000 cfs). Jan. 29 (12:30 p.m.) 6,720 cfs (7.51 ft)j Feb. 12 (4 a.m.) 5,090 cfs (6.80 ft 1 Feb. 16 (4 a.m.) 7,410 cfs (7.78 ft); Feb. 25 (ll a. m.) 6,360 cfs (7.36 ft)j Apr. 20 (4:36 p.m. 4,370 cfs (6.45 ft); May 11 (7 a.m.) 4,020 cfs (6.27 ft); May 24 (5 a.m.) 4,330 cfs (6.43 ft Discharge measurement made on this day. HOOD RIVER BASIN 83

1185. West Pork Hood River near Dee, Oreg.

Location.~Lat 45°36'00", long 121 038'05", in SE£ sec. 1, T. 1 N., R. 9 E., on left bank a quarter of a mile upstream from Dead Point Creek, half a mile upstream from mouth, and 1 mile northwest of Dee. Drainage area. 96 sq mi, approximately. Records available. September 1913 to February 1916 (incomplete), June 1932 to September 1958. Gage. Water-stage recorder. Datum of gage is 802.1 ft above mean sea level, datum of T929. Sept. 1, 1913, to Feb. 12, 1916, staff gage at site half a mile upstream at different datum. Average discharge. 27 years (1913-14, 1932-58), 554 cfs (401,100 acre-ft per year). Extremes.--Maximum discharge during year, 6,820 cfs Apr. 20 (gage height, 8.85 ftl; minimum daily, 136 cfs Sept. 3, 4. 1913-16, 1932-58: Maximum discharge, 12,900 cfs Dec. 22, 1933 (gage height, 12.4 ft), from rating curve extended above 5.300 cfs; minimum, 93 cfs Aug. 22, 1941 (gage height, 1.37 ft). Remarks. Records excellent except those for periods of no gage-height record or shifting control, which are fair. No regulation. Dee Irrigation District canal diverts from right bank about 6 miles above station for irrigation above station and in Middle Fork basin. Diversions from Green Point Creek basin above station for irrigation near Oak Grove; water from two of these diversions is carried in Hood River Irrigation District canal. Revisions (water years). WSP 1448: 1914-16, 1939.

Rating table, water year 1957-58, except period of shifting control height, in feet, and discharge, in cubic feet per second)

1.2 126 5.0 2,150 1.6 218 7.O 4,200 2.0 335 9.0 7,040 3.0 770 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 190 190 510 800 1,28O £l6~670 441 516 356 255"278 170 161 2 258 180 645 700 1,040 437 526 323 173 144 3 229 180 490 600 858 566 421 521 *308 240 173 136 4 190 192 425 550 745 534 405 526 305 240 164 T56 5 240 *180 584 500 695 534 398 516 338 243 161 138

6 2O8 168 2,520 480 B7B"650 498 384 498 445-646 246 166 140 7 208 161 2,770 460 477 377 498 240 168 142 8 205 159 1,560 440 710 453 39T 539 374 235 180 144 9 208 155 1,000 fSS 946 433 429 557 346 221 Try 146 10 187 173 740 460 1,400 417 710 575 346 215 168 146 11 178 349 611 600 1,120 *402 620 557 326 213 168 142 12 180 931 526 1,000 1,420 394 584 469 311 205 164 *142 13 255 1.840 457 900 1,840 380 602 413 296 205 155 144 14 238 1,130 526 1,000 1,310 366 675 398 296 200 153 159 15 197 792 449 1,700 1,450 366 616 398 293 200 153 175 16 185 575 417 1,500 1.860 363 814 429 296 200 153 166 17 178 461 *485 1,700 1,740 374 1,310 441 296 200 153 178 18 168 449 611 1,300 1,640 391 1,180 465 293 *213 150 146 19 164 530 3,480 900 1,330 384 1,780 485 287 213 148148- 202 20 161 425 2,500 750 1,150 384 6,000 469 281 200 16T 21 159 370 1,500 650 1,010 391 2,810 465 281 200 153 195 22 1ST 342 1,200 600 952 409 * 1,850 465 281 192 155 173 23 215 323 900 700 970 425 1,260 473 275 192 150 157 24 226 305 1,300 1,300 1,090 498 994 445 311 185 150 150 25 278 305 2,000 1,100 1,170 490 798 433 302 182 157 ISO 26 266 323 1,700 950 1,010 485 680 425 266 182 159 173 27 224 293 1,400 900 847 457 602 441 278 190 153 178 28 208 329 1,800 1,700 740 477 544 402 281 192 148 175 29 202 293 1,500 1,600 - 465 526 370 255 195 168 173 30 221 302 1,200 1,500 449 508 5T7 185 150 170 31 205 1,OOO 1,750 445 3BTJ341 178 148 TotaJ 6,418 12,409 36,606 29,530 31,648 13,993 29,146 14,424 9,609 6,535 4,932 4,772 Mean 207 414 1,181 953 1,130 451 972 465 320 211 159 159 Ac-ft 12,730 24,610 72,610 58,570 62,770 27,750 57,810 28,610 19,060 12,960 9,780 9,470 Calendar year 1957 : Max 3,480 Min 130 Mean 531 Ac-ft 384,400 Water year 1957-58 : Max 6,000 Min 136 Mean 548 Ao-ft 396,700

Peak discharge (base. 4,100 ofs). Dec. 6 (6 p.m.) 5,070 ofs (7.66 ft); Dec. 19 (2:30 p.m.) 5,490 ofs (7,96 ft); Apr. 20 (2 p.m.) 6,820 cfs (8.85 ft). * Discharge measurement made on this day. Note. No gage-height record Dec. 20 to Jan. 30; discharge estimated on basis of weather records and records for Hood River near Hood River. Shifting-control method used Apr. 20 to May 11. 84 HOOD RIVER BASIN

121Q. Hood River near Hood River, Oreg.

Location.--Lat 45°42'00", long 121°30'40", in SEi sec. 36, T. 3 N., R. 10 E., on right bank at Powerdale, half a mile upstream from Pacific Power & Light Co.'s plant and three-quarters of a mile south of town of Hood River. Drainage area. 329 sq mi. Records available.--March 1913 to September 1958. Published as "at Powerdale, near Hood River" 1913-26. Gage. Water-stage recorder. Datum of gage is 106.37 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Prior to Nov. 13, 1934, staff gages or water- stage recorders at several sites within half a mile of present site at various datums. Average discharge. 45 years, 1,098 cfs (794,900 acre-ft per year). Extremes. Maximum discharge during year, 8,240 cfs Apr. 20; minimum daily, 334 cfs 1913-58: Maximum discharge, 34,000 cfs Jan. 6, 1923 (gage height, 11.1 ft, site then in use), no diversion by power conduit; minimum daily, 165 cfs Aug. 5, 1941. Remarks. Records good. Many diversions for irrigation above station. Daily discharge regulated by pondage at sawmill at Dee. All records presented herein include flow in Pacific Power & Light Co.'s conduit, which diverts 3 miles above station and returns water to river half a mile below station. Cooperation. Water-stage recorder inspected by employees of Pacific Power & Light Co. Revisions (water years). WSP 1448: For conduit: 1931-32; for river: 1915-16(M), 1918IM), 1920(M), 1924-25, 1931, 1934-37(M), 1938, 1939-40(M), 1943, 1945(M), 1946-48, 1949 P).

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 565 502 849 1,540 2,790 1,570 1,080 1,360 1,090 6~8T710 497 427 2 633 488 1,090 1,390 2,300 1J490 1,080 1,380 1,010 501 373 3 607 489 883 1,250 2,050 1,400 1,050 1,370 *942 658 514 347 4 511 500 796 1,150 1,780 1,330 996 1,340 913 662 458 334 5 613 *480 743 1,070 1,640 1,350 984 1,340 976 677 424 33¥ 6 535 472 2,790 1,020 1,530 1,260 957 1,330 2,000 693 436 352 7 536 464 *3,700 968 1,600 1,240 955"940 1,300 i,sio 703 454 359 8 472 458 2,370 943 1,630 1,190 1,370 1,240 689 522 390 9 566 452 1,570 933 1,890 1,150 987 1,410 1,130 638 516 413 10 508 47T 1,260 947 2,510 1,110 1,310 1,430 1,080 605 503 424 11 492 726 1,090 1,290 2,270 *1,080 1,270 1,460 1,010 603 529 407 12 489 1,410 974 1,770 2,830 1,060 1,200 1,270 961 626 4W 377 13 634 2,620 889 1,550 3,170 1,030 1,230 1,160 924 607 439 380 14 646 1,670 952 1,830 2,660 1,000 1,330 1,100 915 613 413 403 15 540 1,240 883 3,090 2,880 1,000 1,250 1,090 905 594 420 476 16 508 988 847 2,580 3.520 992 1,440 1,140 869 572 429 435 17 494 857 *906 3,010 3,360 2,100 1,210 890 *578 415 514 18 477 812 981 2,420 3,280 lioio 2,110 1,250 897 608 412 424 19 463 908 3,750 1,990 2,860 992 2,400 1,320 887 632 389 513 20 458 791 4,260 1,730 2,540 992 7,060 1,340 876 576 39T 465 21 447 730 3,200 1,550 2,260 999 4,520 1,340 893 578 404 521 22 46TT 697 2,320 1,390 2,120 1,030 *3,320 1,360 909 555 425 430 23 548 679 1,820 1,590 2,110 1,040 2,600 1,430 931 542 404 443 24 553 653 2,480 2,320 2,280 1,140 2,210 1,350 918 511 415 425 25 644 647 3,660 2,150 2,470 1,120 1,930 1,340 909 500 445 459 26 663 688 3,660 1,870 2,150 1,100 1,740 1,300 825 539 450 454 27 565 630 2,770 1,840 1,890 1,060 1,580 1,450 843 541 423 455 28 527 694 3,200 2,920 1,700 1,070 1,480 1,340 826 596 404 451 29 506 626 2,770 3,050 - 1,060 1,410 1,200 716 591 *403 443 30 545 615 2,180 1,060 1,380 1,100 7SS 558 422 423 31 526 1,780 *3,'230 1,030 1,140 517 401 Total 16,739 23,459 61,423 57,301 66,090 34,975 53,896 40,320 29,561 18,753 13,746 12,711 Mean 540 782 1,981 1,848 2,360 1,128 1,797 1,301 985 605 443 424 Ac-ft 33,200 46,530 121,800 113,700 131,100 69,370 106,900 79,970 58,630 37,200 27,260 25,210 Calendar year 1957: Max 4,590 Mln 329 Mean 1,085 Ac-ft 785,200 Water year 1957-58: Max 7,060 Mln 334 Mean 1,175 Ac-ft 850,900 Peak discharge (base, 4,600 cfs). --Dec. 6 (8:30 p.m.) 5,720 cfs; Dec. 19 (6 p.m.) 6,330 cfs; Dec. 25 (11 p.m.) 5,210 cfs; Apr. 20 (4 p.m.) 8,240 cfs. Discharge measurement made on this day. WHITE SALMON RIVER BASIN 85

1213. White Salmon River below Cascades Creek, near Trout Lake, Wash.

Location. Lat 46°06'10", long 121°36'10", in SW£ sec. 7, T. 7 N., R. 10 E., on right bank 100 ft downstream from Cascades Creek and 7f miles northwest of Trout Lake. Drainage area. 32.1 sq mi. Records available.--July 1957 to September 1958. Gage. Water-stage recorder. Altitude of gage is 3,080 ft (from topographic map). Extremes. 1957: Maximum discharge during period July to September, 181 cfa Aug. 4 (gage height, 2.12 ft); minimum, 72 cfs Sept. 29; minimum gage height, 1.57 ft Sept. 19,20,29. 1957-58: Maximum discharge during water year, 551 cfs May 26 (gage height, 3.27 ft); minimum, 60 cfs Nov. 29; minimum gage height, 1.45 ft Sept. 25, 26. Remarks. Records good. No regulation or diversion above station. Rating tables, July 26, 1957, to Sept. 30, 1958 (gage height, in feet, and discharge, in cubic feet per second) (Shifting-control method used Apr. 20 to May 26) July 26, 1957, to May 26, 1958 May 26 to Sept. 30' 1.5 62 1.4 72 2.0 154 1.7 121 3.0 420 2.0 190 3.0 470 Discharge. in cubic feet per second, 1957 Day July Aug. Sept. Day July Aug. Sept. Day July Aug. Sept. Day July Aug. Sept. 1 _ 119 93 9 _ 106 99 17 . Ill 99 25 . 97 90 2 _ 119 97 10 _ 102 103 18 - 111 93 26 128 93 93 3 - 131 95 11 _ 102 106 19 - 111 77 27 128 93 101 4 _ 139 97 12 _ 104 106 20 . 106 81 28 130 90 81 5 _ 110 95 13 _ 106 102 21 _ 108 88 29 130 i484 76 6 _ 111 93 14 - *104 101 22 _ 110 92 30 124 9

1220. White Salmon River near Trout Lake, Wash. Location. Lat 45°59'30", long 121°29'30", in SE£ sec. 24, T. 6 N., R. 10 E. , on left bank a quarter of a mile downstream from Trout Creek and 2 miles southeast of town of Trout Lake. Drainage area. 170 sq mi, approximately. Records available. July to September 1918 (published as "near Guler" ) , October 1928 to September 1931, August 1957 to September 1958. Gage. Water-stage recorder. Altitude of gage is 1,870 ft (from river-profile map). July 17 to Sept. 30, 1918, chain gage at site half a mile downstream at different datum. Oct. 14, 1928, to Sept. 30, 1931, staff gage at site 250 ft upstream at different datum. Extremes. 1957: Maximum discharge during period August to September, 163 cfs Aug. 4 (gage height, 1.91 ft); minimum, 70 cfs Aug. 29-31, Sept. 14, 19 (gage height, 1.27 ft). 1957-58: Maximum discharge during water year, 2,480 cfs Apr. 20 (gage height, 7.32 ft); minimum, 82 cfs Sept. 11, 13 (gage height, 1.45 ft). 1918, 1928-31, 1957-58: Maximum discharge observed, 3,000 cfs Apr. 1, 1931 (gage height, 5.2 ft, site and datum then in use); minimum observed, 35 cfs Aug. 26, 1931 (gage height, -0.06 ft, site and datum then in use). Remarks . Records excellent except those for periods of no gage-height record, which are Fair. Very slight regulation. Diversions above station for irrigation of several thousand acres.

Rating table, Aug. 2, 1957, to Sept. 30, 1958 (gage height, In feet, and discharge, In cubic feet per second) 1.3 64 2.0 165 3.0 390 5.0 1,120 7.0 2,260 Discharge, In cubic feet per second, 1957 Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. 1 a90 81 7 108 83 13 94 *88 19 92 74 25 86 83 2 93 82 8 104 77 14 *89 82 20 94 51 26 80 87 3 101 80 9 98 76 15 88 82 21 93 82 27 76 101 4 126 83 10 93 78 16 92 78 22 89 86 28 77 107 5 107 82 11 92 83 17 94 77 23 88 87 29 72 107 6 107 77 12 97 87 18 93 77 24 92 87 30 71 114 31 72 Tota] 2,848 2,549 Mean 91.9 85.0 Runof f In acre-feet...... 5,650 5,060 * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for nearby stations.

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 115 157 260 444 630 550"880 411 745 682 257 127 ~5T112 2 115 *155 250 414 588 447 780 633 *259 130 3 *111 151 240 385 558 731 441 812 588 ?ST 128 92 4 109 149 250"220 360 531 682 411 808 546 237 118 92 5 TT5 149 340 510 647 390 800 549 231 120 96 6 128 149 350 322 498 594 382 824 806 235 130 93 7 132 149 489 308 557 564 35? 868 872 245 126 96 8 133 147 546 298 546 *537 393 924 359 221 T2S"132 101 9 130 XI7 465 288 661 504 393 988 608 207 101 10 128 157 400 255 745 474 447 1,010 564 199 127 97 11 127 255 350 290 710 450 510 1,040 534 197 124 86 12 128 354 *338 328 742 432 528 928 504 201 114 84 13 155 55B~588 310 322 766 414 555 784 462 185 109 83 14 155 300 328 724 396 570 731 450 179 109 55 15 138 400 285 465 720 382 580 731 426 173 118 97 16 124 300 275 519 784 370 644 762 402 167 115 104 17 127 260 285 626 860 368 788 820 390 179 112 112 18 127 240 298 619 1,100 355 *932 880 385 171 115 107 19 128 230 337 549 1,080 342 948 976 370 165 118 112 20 127 220 561 504 988 538 2,010 996 378 161 120 105 21 127 220 543 465 916 352 2,080 968 411 159 *109 105 22 139 230 444 435 880 365 1,510 976 375 161 111 105 23 207 230 382 444 888 370 1,200 1,020 350 153 111 104 24 227 230 370 *570 1,230 432 1,010 1,000 352 153 109 102 25 257 230 513 558 1,670 458 912 1,000 338 151 112 105 26 219 230 812 516 1,440 425 824 1,000 315 142 109 98 27 187 220 734 522 1,160 399 756 1.140 320 144 108 104 28 173 210 678 668 980 385 714 1,OOO 305 145 102 101 29 167 200 647 731 - 390 700 844 292 142 TOT 101 30 167 230 555 73T 417 710 *734 275 136 108 100 31 163 492 686 402 703 135 in Tota] 4,568 7,112 21,979 14,323 23,412 14,633 22,578 27,592 14,171 5,739 5,617 2,988 Mean 147 237 419 462 836 472 753 890 472 185 117 99.6 Ac-ft 9,060 14,110 25,740 28,410 46,440 29,020 44,780 54,730 28,110 11,380 7,170 5,930 Calendar year 1957: Max - Mln - Mean - Ac-ft - Water year 1957-58: Max 2,080 Mln 83 Mean 421 Ac-ft 304,900 * Discharge measurement made on this day. Note. No gage-height record Nov. 15 to Dec. 6, Dec. 10, 11; discharge estimated on basis of records for nearby stations. WHITE SALMON RIVER BASIN 87

1230. White Salmon River at Husum, Wash. Location. Lat 45°47'50", long 121°29'00", in SW£ sec. 30, T. 4 N., R. 11 E., on right bank at Husum, 500 ft upstream from Rattlesnake Creek. Drainage area. 293 sq mi. Records available.--September 1909 to October 1919, October 1929 to October 1941, August 1957 to September 1958. Gage. Water-stage recorder. Altitude of gage is 360 ft (from river-profile map). Sept. 23, 1909, to Oct. 11, 1912, and Feb. 21, 1915, to Oct. 31, 1919, staff gages and Oct. 12, 1912, to Feb. 20, 1915, water-stage recorder, at sites within a quarter of a mile at different datums. Average discharge. 23 years, 965 cfs {698,600 acre-ft per year). Extremes. 1957: Maximum daily discharge during period August to September, 740 cfs Aug. 4; minimum discharge, 542 cfs Sept. 16, 26 (gage height, 1.64 ft). 1957-58: Maximum discharge during water year, 3,610 cfs Apr. 20 (gage height, 6.11 ft); minimum, 522 cfs Nov. 9, 10 (gage height, 1.57 ft). 1909-19, 1929-41, 1957-58: Maximum discharge, 10,800 cfs Dec. 22, 1933 (gage height, 11.0 ft), from rating curve extended above 2,500 cfs; minimum, 340 cfs Dec. 30, 1930 (gage height, 0.64 ft)-. Remarks. Records excellent. Several diversions for irrigation of a large area around Trout Lake. No regulation.

Rating table, Aug. 1, 1957, to Sept. 30, 1958 (gage height, In feet, and discharge, In cubic feet per second)

1.5 502 4.0 1,680 2.0 662 6.0 3,500 3.0 1,120 Discharge, In cubic feet per second, 1957 Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. 1 710 573 7 685 557 13 651 560 19 625. 557 25 602 560 2 700 576 8 681 560 14 644 *551 20 619 563 26 599 551 5 710 573 9 673 560 15 644 548 21 616 570 27 595 595 4 740 560 10 670 560 16 640 548 22 616 576 ?H 592 602592" 5 681 560 11 655 560 17 637 554 23 612 579 29 589 6 685 560 12 651 560 18 626 557 24 609 579 30 579 592 31 576 - Total .... Runoff In acre-feet ...... 39,490 33,710 Discharge measurement made on this day.

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 599 551 602 1,140 1,580 1,810 1,220 1,510 1,460 1,000 704 623 2 606 *545 640 1,070 1,490 1,700 1,260 1,540 1,410 980 700 6T2 3 *609 539 633 1,000 1,420 1,610 1,260 1,570 1,370 980 704 606 4 602 536 606 950 1,350 1,540 1,240 1,570 1,320 945 700 606 5 609 530 586 901 1,290 1,510 1,210 1,560 1,300 925 700 602 6 619 530 642 858 1,260 1,460 1,200 1,570 1,540 925 704 595 7 616 527 940 826 1,260 1,420 1,200 1,620 1.680 930 696 599 8 612 524 1,020 813 1,290 *1,390 1,200 1,640 1,510 925 704 589 9 602 522 940 795"795 1,440 1,360 1,200 1,710 1,420 872 704 586 10 592 530 831 1,600 1,320 1,220 1,720 1,370 *849 700 589 11 586 639 761 822 1,570 1,300 1,280 1,770 1,540 849 700 579 12 582 764 724 950 1,720 1,280 1,290 1,660 1,510 840 681 57? 13 606 IjOSO 689 985 1,750 1,260 1,320 1,510 1,280 831 662 586 14 612 990 673 1,020 1,690 1,250 1,330 1,420 1,260 817 662 589 15 586 835 *655 1,240 1,680 1,240 1,340 1,590 1,240 795 658 609 16 576 728 644 1,290 1,840 1,220 1,390 1,420 1,210 795 662 609 17 570 662 655 1,370 1,940 1,230 1,540 1,470 1,180 791 655 616 18 560 626 689 1,350 2,280 1,210 *1,720 1,540 1,160 800 655 609 19 554 612 870 1,260 2,230 1.190 1,740 1,620 1,140 782 655 609 20 551 592 1,200 1,200 2,050 1,190 2,960 1,670 1,130 782 655 612 21 548 573 1,220 1,140 1,910 1,200 5,270 1,640 1,180 774 *651 623 22 HBT 563 1,120 1,080 1,820 1,200 2,610 1,650 1,140 774 644 625 23 625 563 1,030 1,100 1,780 1,200 2,210 1,720 1,090 782 640 619 24 655 551 1,020 *1,£60 2,120 1,260 1,960 1,710 1,100 761 637 612 25 666 551 1,160 1,290 2,670 1,260 1,780 1,720 1,100 774 655 609 26 640 557 1,590 1,240 2,520 1,250 1,670 1,690 1,060 753 626 602 27 599 548 1,470 1,240 2,190 1,240 1,580 1.900 1,080 732 626 599 28 576 545 1,450 1,470 1,960 1,220 1,510 1,780 1,060 740 5T9~619 602 29 563 533 1,420 1,670 - 1,210 1,470 1,620 1,040 728 592 30 563 533 1 290 1,740 1,240 1,470 1,500 1 , Q2JD 720 630 579 31 557 l!200 1,696 1,220 *1,470 712 623 TotaJ 18,392 18,329 28,970 35,555 49,700 40,990 47,650 49,880 37,500 25,663 20,609 18,064 Mean 593 611 935 1,147 1,775 1,322 1,588 1,609 1,250 828 665 602 Ac-ft 36,480 36,360 57,460 70,520 98,580 81,300 94,510 98,940 74,380 50,900 40,880 55,830 Calendar year 1957: Max - Min - Mean - Ac-ft - Water year 1957-58: Max 3,270 Mln 522 Mean 1,072 Ac-ft 776,100 Peak discharge (base, 2,000 cfs). Feb. 18 (5 to 6 p.m.) 2,520 cfs (4.79 ft); Feb. 25 (2 to 5 p.m.) 2.710 efs (5.21 ft); Apr. 20 (11:50 p.m.) 5,610 efs (6.11 ft).______* Discharge measurement made on this day. 88 WHITE SALMON RIVER BASIN

1235. White Salmon River near Underwood, Wash.

Location.--Lat 45°45'00", long 121 "31 "30", in NWir sec. 14, T. 3 N., R. 10 E. , on right bank 300 ft downstream from bridge, 1,000 ft downstream from Pacific Power and Light Co.'s Condit powerplant, and 2 miles north of Underwood and mouth. Drainage area.--390 sq mi, approximately. Records available. October 1912 to February 1913 (published as "at Condit Dam, near Underwood"), March 1915 to September 1930, September 1935 to September 1958. Gage. Water-stage recorder. Datum of gage is 112.96 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Prior to March 1913, reference point at dam, 1 mile upstream at different datum. March 1915 to July 16, 1918, water-stage recorder at site 200 ft upstream at datum 3.24 ft higher, and July 17, 1918, to Sept. 30, 1930, at datum 2.24 ft higher than present datum. Average discharge.--38 years (1915-30, 1935-58), 1,103 cfs (798,500 acre-ft per year). Extremes.--Maximum discharge during year, 5,130 cfs Jan. 29 (gage height, 7.52 ft); mini mum, 24 cfs Oct. 17 (gage height, 1.11 ft); minimum daily, 406 cfs Nov. 3. 1912-13, 1915-30, 1935-58: Maximum discharge, 9,700 cfs Dec. 29, 1917 (gage height, 9.5 ft, site and datum then in use), from rating curve extended above 2,700 cfs; practically no flow at times when powerplant is'shut down. Remarks.--Records excellent. Water diverted to irrigate about 4,500 acres in the Trout Lake area. Low and medium flow regulated by powerplant of the Pacific Power and Light Co. Revisions (water years).--WSP 484: 1915-17. WSP 1218: Drainage area. WSP 1348: 1936-41(m).

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 3.1 394 5.0 1,650 3.5 575 6.0 3,770 4.0 865 7.0 4,350 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 634 576 558 1,330 3,470 3,360 1,320 1,660 1,530 1,010 746 636 Z 610 *682 7ET 1,380 3,300 2,120 1,400 1,690 1,460 986 749 639 3 633 555"406 658 1,300 1,990 1,980 1,410 1,740 1,430 996 706 634 4 658 676 1,100 1,810 1,880 1,370 1,710 1,350 856 726 576 5 764 533 602 1,030 1,680 1,840 1,360 1,700 1,330 1,040 708 612 6 488 553 810 1,030 1.600 1,750 1,310 1,710 1,600 918 762 632 7 668 538 1,030 960 1,600 1,670 1,310 1,750 1,800 975 724 568 8 660 558 963 963 1,640 *1,610 1.290 1,770 1,560 934 736 623 9 616 577 1,010 5gO~900 1,840 1,550 TySoU 1,850 1,470 914 779 636 10 590 564 886 3,190 1,500 1,330 1,860 1,430 888 &SS 610 11 631 653 750 963 2,170 1,460 1,380 1,910 1,360 *861 748 606 12 703 868 793 1,200 3,580 1,450 1,390 1,770 1,350 850 735 586 13 518 1,000 742 1,360 3,600 1,390 1,420 1,610 1,310 830 688 646 14 635 1,090 776 1,270 3,450 1,370 1,440 1,530 1,380 888 694 56669"2 15 604 §12 *646 1,830 2,450 1,360 1,430 1,460 1,380 807 688 16 730 729 724 1,860 2,900 1,340 1,490 1,500 1,360 833 695 578 17 416 654 708 1,930 2,980 1,340 *1,680 1,550 1,300 845 669 652 18 33T 664 786 1,850 5,430 1,330 1,890 1,660 1,170 838 663 653 19 670 642 1,030 1,680 3,il'6 1,300 1,960 1,760 1,160 794 706 673 30 454 613 1,600 1,540 2,820 1,380 3,720 1,790 1,140 810 686 633 31 594 614 1,560 1,430 3,530 1,390 4,050 1,750 1,150 811 669 654 23 564 603 1,330 1,320 3,400 1,300 3,170 1,760 1,170 802 *686 616 33 656 706 1,330 1,360 2,330 1,290 3,630 1,840 1,130 806 690 683 24 696 436 1,130 *1,680 3,640 1,380 3,300 1,850 1,080 787 634 648 35 704 636 1,560 1,730 3,380 1,370 2,080 1,840 1,100 818 660 650 36 718 592 3,560 1,650 3,140 1,340 1,920 1,830 1,050 786 634 606 37 573 665 3,030 1,650 3,760 1,310 1,820 3,000 1,070 744 648 688 38 590 443 2,000 3,170 2,460 1,300 1,700 1,900 1,090 802 632 614 29 618 594 2,070 3,530 - 1,310 1,660 1,730 1,060 714 640 643 30 590 668 Ij 590 3,770 1,340 1,630 1,580 1,050 754 643 639 31 592 1,470 2,776 1,310 *1,530 733 640 Total 19,176 19,243 34,758 47,145 68,130 46,330 54,110 53,570 38,360 36,419 21,448 18,860 Mean 619 641 1,121 1,521 3,433 1,494 1,804 1,728 1,379 853 693 639 Ac-ft 38,040 38,170 68,940 93,510 135,100 91,870 107,300 106,300 76,090 53,400 43,540 37,410 Calendar year 1957; Max 3,330 Mln 406 Mean 1,073 Ac-ft 777,100 Water year 1957-58 : Max 4,030 Mln 406 Mean 1,336 Ac-ft 887,700 Discharge measurement made on this day. LITTLE WHITE SALMON RIVER BASIN 89

1245. Little White Salmon River at Willard, Wash.

Location.--Lat 45°46'50", long 121°37'30", in NW£ sec. 1, T. 3 N., R. 9 E., on right bank a- quarter of a mile downstream from Lava Creek at Willard. Drainage area. 114 sq mi (revised). Records available.--November 1903 to March 1905 (fragmentary), August 1905 to August 1906 (fragmentary), December 1944 to September 1958. Published as "below Lava Creek, near Cooks" 1903-6. Gage. Water-stage recorder. Altitude of gage is 1,230 ft (from river-profile map). Prior to Aug. 6, 1906, nonrecording gage near present site at different datum. Average discharge.--13 years (1945-58), 455 cfs (329,400 acre-ft per year). Extremes. Maximum discharge during year, 2,140 cfs Dec. 26 (gage height, 7.96 ft); minimum daily, 1.5 cfs Nov. 7. 1903-6, 1944-58: Maximum discharge, 4,140 cfs Dec. 15, 1946 (gage height, 9.50 ft), from rating curve extended above 2,500 cfs; minimum daily, that of Nov. 7, 1957. Remarks. Records good except those for periods of no gage-height record, which are fair. Brought on Lumber Co. diversion, a quarter of a mile upstream, may at times carry as much as 30 cfs out of the basin to Columbia River. Slight regulation. Other diver sions for water supply, irrigation, and hatchery purposes above station. Revisions (water years).--WSP 1318: 1945(M).

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 25 Dec. 26 to Sept. 30

0.7 2.0 2.5 100 1.2 5.0 570 1.0 5.5 3.0 160 1.6 6.0 850 1.3 14.5 4.0 320 2.0 7.0 1,210 1.6 2S 5.0 535 3.0 170 8.0 2,180 2.0 55 7.0 1,190 4.0 340 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 12.5 8.5 720 1,200 847 450 622 *394 350 169 57 2 14.5 6.5 m 660 1,040 SIT 470 6lf 390 173 55 3 13.5 4.5 166 620 955 775 48O 602 385 329 TM 52 4 13.5 *3.5 151 590 886 742 470 592 385 316 156 50 5 26 2.5 140 550 835 724 460 575 383 312 152 48 6 23 2.5 243 530 793 679 450 570 430 307 J.47 46 7 21 1.5 485 520 781 650 440 565 457 303 142 46 8 19.5 3.3 362 500556" 754 628 430 558 396 296 138 41 9 17.5 7.3 296 892 *598 440 545 394 294 133 39 10 14.5 3.8 257 5OO 1,200 568 450 538 390 287 128 38 11 12.5 44 235 600 1,070 550 440 530 392 282 124 37 12 10.5 134 222 660 1,180 540 440 512 392 276 120 34 13 19.5 255 214 660 1,300 520 430. 498 392 271 117 33 14 18.5 187 218 850 1,140 510 420 485 392 266 113 33 15 12.5 136 211 950 1,080 500 425 476 388 261 108 34 16 10.5 109 214 1,000 1,240 500 430 473 385 254 105 33 17 8.5 92 *230 1,050 1,280 490 500 469 383 251 103 34 18 7.5 86 286 900 1.490 490 530 464 375 244 97 31 19 6.5 89 727 800 1,270 490 *646 457 373 241 93 30 20 4.5 92 *1,170 700 1,090 480 1,760 448 370 234 91 25 21 3.5 96 1,060 650 1,000 490 1,280 439 364 227 86 24 22 9.5 101 832 600 940 470 958 439 362 *222 *84 23 23 22 105 670 7OO 895 470 814 436 358 217 83 21 24 26 106 691 800 919 490 724 436 360 212 80 19.5 25 58 107 912 *862 976 480 668 434 354 207 73 18.5 26 36 109 1.740 835 994 470 655 441 352 203 70 16.5 27 26 107 1,090 823 946 460 655 434 352 198 68 15.5 28 19.5 110 1,210 1,070 892 460 650 418 364 191 67 15 29 14.5 116 1,220 1,190 - 460 645 410 362 184 64 14 30 12 5 105 970 1,320 460 638 403 360 63 12.5 31 9 5 800 1,410 450 455 174 59 Total 503.5 2,329.9 17,316 24,120 29,068 17,252 18,243 15,284 11,384 7,939 3,366 975.5 Mean 16.2 77.7 559 778 1,038 557 608 493 379 256 109 32.5 Ac-ft 999 4,620 34,350 47,840 57,660 34,220 36,180 30,320 22,580 15,750 6,680 1,930 Calendar year 1957: Max 1,890 Min 1.5 Mean 324 Ac-ft 234,900 Water year 1957-58: Max 1,760 Min 1.5 Mean 405 Ac-ft 293,100 Peak discharge (base. 1,5OO cfs). --Dec. 20 (2:30 a.m.) 1,5OO cfs (7.37 ft); Dec. 26 (5 a.m.) 2,140 cfs (7.96 ft); Feb. 18 (9 a.m.) 1,520 cfs (7.37 ft); Apr. 20 (2:15 p.m.) 1,98O cfs (7.82 ft) * Discharge measurement made on this day. Note.--No gage-height record Oct. 1, 3, 4, 11, 12, 15-22, Oct. 30 to Nov. 7, Dec. 31 to Jan. 24, Mar. 11 to Apr. 18; discharge estimated on basis of 1 discharge measurement and records for down stream stations.

534540 O -60 -7 90 LITTLE WHITE SALMON RIVER BASIN

1250. Little White Salmon River above Lapham Creek, near Willard, Wash.

Location (revised). Lat 45°46'00", long 121°37'40", on line between sees. 11 and 12, T.3 N., R.9 E., on right bank 0.2 mile upstream from Lapham Creek and 1.2 miles south of Willard. Drainage area. 123 sq mi. Records available. September 1949 to September 1958. Prior to 1958 published as below Lapham Creek. Gage has always been located above Lapham Creek. Gage.--Water-stage recorder. Altitude of gage is 980 ft (from river-profile map). Average discharge. 9 years, 545 cfs (394,600 acre-ft per year). Extremes. Maximum discharge during year, 2,080 cfs Dec. 26 (gage height, 4.96 ft); mini mum, 66 cfs Oct. 19, Sept. 30 (gage height, 1.62 ft). 1949-58: Maximum discharge, 3,610 cfs Jan. 9, 1953 (gage height, 5.98 ft); minimum, 59 cfs Oct. 31, 1952 (gage height, 1.35 ft). Remarks. Records good. Broughton Lumber Co. diversion, l£ miles upstream, may at times carry as much as 30 cfs out of basin to Columbia River. Other diversions above station for water supply, irrigation, and hatchery operation. Possibly some regulation.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.6 62 2.0 154 3.0 540 4.0 1,150 5.0 2,13O Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 80 76 270"212 952 1,480 l.OSO 555 T§0"784 *486 427 215 Ill 2 84 74 874 1,320 1,646 575 481 219 3 82 74 259 802 1,210 990 580 730 476 396 206 109 4 80 *70 238 742 1,120 952 570 712 472 384 206 106 5 97 70 225 7O6 1,O70 932 560 700 476 380 203 104 6 93 70 383 662 997 880 550 684 555"515 376 197 100 7 89 68 662 634 MS"978 838 540 672 376 191 100 8 86 74 490 618 802 530 662 481 364 185 95 9 86 74 409 5"50"590 1,120 *760 525 650 481 360 182 93 10 82 72 360 1,450 *724 545 640 481 352 179 93 11 78 121 328 634 1,340 689 540 623 481 348 174 93 12 76 218 308 796 1,450 672 520 606 481 344 174 89 13 86 372 304 832 1,530 645 515 590 476 336 168 89 14 84 254 308 862 1,400 628 STB"505 585 476 332 162 91 15 80 225 300 1,240 1,350 618 570 472 324 160 91 16 76 197 *300 1,290 1,490 596 535 565 468 316 157 91 17 76 176 324 1,320 1,540 590 634 560 463 308 154 89 18 74 171 392 1,170 1,650 590 700 555 458 304 149 86 19 72 174 1,040 1,020 1,566' 575 *820 550 454 296 146 86 20 72 176 1,520 912 1,366 570 1,870 540 450 288 144 82 21 70 182 1,380 820 1,266 575 1,550 535 440 284 141 82 22 Je 185 1,100 760 1,196 565 1,210 530 436 276 *138 80 23 93 188 900 772 1,136 560 1,040 525 432 *270 136 78 24 100 191 945 1,000 1,160 580 932 520 440 266 133 76 25 114 191 1,220 *1,080 1,220 580 862 525 432 259 128 76 26 109 191 1,850 1,060 1,250 575 838 525 415"427 256 126 74 27 97 188 1,380 1,040 1,200 565 832 515 252 123 72 28 86 194 1,520 1,360 1,130 560 820 500 445 245 123 72 29 82 194 1,480 1,470 560 814 490"490 440 235 121 68 30 80 185 1,230 1,570 555 790 432 228 68 31 1,070 1 680 545 490 222 116 Total 2,618 4,725 22,707 29,858 35,873 21,391 22,372 18,383 13,897 9,826 4,974 2,653 Mean 84.5 158 732 963 1,281 690 746 593 463 317 160 88.4 Ac-ft 5,190 9,370 45,040 59,220 71,150 42,430 44,370 36,460 27,560 19,490 9,870 5,260 Calendar year 1957: Max 2,090 Min 68 Mean 423 Ac-ft 306,000 Water year 1957-58: Max 1,870 Min 68 Mean 519 Ac-ft 375,400

Peak dischar,large (base. 1,500 cfs}. Dec. 20 (1:45 a.m.) 1,870 cfs (4.78 ft); Dec. 26 (4 a.m.) £,uou2,080 ciscf's (4.96V4.»b ft);it;; Dec. 28za (717 p.m.)p.m.; 1,690l,bso cfs (4.6214.bz ft):rtK Jan.Ja 31 (6 to 9 a.m.) 1,720 cfs (4.65 ft);); Feb. 13 (12 p.m. to 4 a.m.) 1,570 cfs (4.50 ft): Feb.P 18 (11 a.m.) 1,690 cfs (4.62 ft); Apr.Ar 20 (122 m. to 3:30 p.m.) 2,010 cfs (4.90 ft). * Discharge measurement made on this day. LITTLE WHITE SALMON RIVER BASIN 91

1255. Little White Salmon River near Cook, Wash.

Location.--Lat 45°43'30", long 121°38'05", in NE^-NE^ sec. 26, T. 3 N., R. 9 E., on left Dank 1 mile upstream from mouth and l| miles northeast of Cook. Drainage area. 134 sq mi (revised). Records available. October to November 1909 (published as "near Cooks"), September 1956 to September 1958. Gage.--Water-stage recorder. Altitude of gage is 150 ft (from topographic map). Oct. 4 To Nov. 10, 1909, staff gage at hatchery half a mile downstream at different datum. Extremes.--Maximum discharge during year, 2,060 cfs Dec. 26 (gage height, 5.64 ft); mini mum, 111 cfs Nov. 10 (gage height, 0.62 ft). 1909, 1956-58: Maximum discharge, 2,330 cfs Feb. 26, 1957; minimum, that of Nov. 10, 1957. Remarks. Records excellent. Broughton Lumber Co. diversion above station may at times carry as much as 30 cfs out of the basin into Columbia River. Slight regulation. Other diversions for water supply, irrigation, and hatchery purposes above station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 25 Dec. 26 to Sept. 30 0.6 109 0.7 113 1.0 159 1.0 154 .2.0 340 2.0 340 3.0 625 3.0 625 4.0 1,010 4.0 1,010 5.0 1,600 5.0 1,600 6.0 2,350 6.0 2,350 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 125 121 259 948 1,520 1,080 622 750"808 539 470 269 158"162 2 129 119 55? 888 1,370 1,040 639 536 4ST 271 3 126 117 303 832 1,220 985 646 772 530 446 25T 157 4 126 *116 283 793 1,110 952 636 758 524 430 255 157 5 138 115 267 762 1,060 944 625 748 521 428 251 153 6 134 115 470 730 1,000 904 611 737 569 420 247 150 7 133 114 730 709 985 872 600 730 33T 420 242 151 8 132 117 557 688 975 840 590 720 530 410 238 147 9 129 117 470 667 1,110" *812 584 712 530 405 232 144 10 127 115 415 664 1,470 782 604 702 530 398 229 143 11 125 154 385 720 1,360 765 590 688 530 392 225 143 12 123 253 365 832 1,470 748 581 670 530 388 222 141 13 132 355"420 355 860 1,570 730 575 656 527 382 216 141 14 129 365 888 1,470 712 35"9"569 650 521 378 215 141 15 125 271 350 1,220 1,420 698 632 518 372 210 143 16 123 234 *352 1,260 1,630 684 584 625 515 365 208 140 17 121 210 372 1,290 1,580 684 678 618 509 360 203 141 18 120 207 449 1,130 1,700 678 740 611 506 355 198 137 19 119 212 1,080 1,000 1,570 667 *845 604 500 348 195 139 20 117 212 1,540 916 1,410 660 1,900 594 494 340 193 134 21 ii£ 213 1,430 848 1,290 664 1,590 587 488 332 188 134 22 Tz? 218 1,110 800 1,200 646 1,230 584 485 *325 187 133 23 133 222 912 816 1,130 636 1,040 581 482 320 *185 130 24 140 222 952 965 1,170 660 936 581 485 315 182 129 25 151 223 1,230 1,060 1,250 653 880 578 479 309 177 127 26 146 225 1,840 * ,030 1,310 646 860 581 455"470 305 174 126 27 137 223 1,410 ,020 1,230 639 852 575 301 172 125 28 129 231 1,520 ,340 1,140 632 840 557 488 291 172 123 29 127 231 1,490 ,460 - 628 828 551 488 285 169 122 30 125 222 1,240 J ,540 625 816 548 479 279 1°.<; 121 31 122 1,050 . ,490 611 *545 275 166 Total 3,981 5,904 23,863 30,166 36,720 23,277 23,660 20,093 15,339 11,311 6,520 4,192 Mean 128 197 770 973 1,311 751 789 648 511 365 210 140 Ac-ft 7,900 11,710 47,330 59,830 72,830 46,170 46,930 39,850 30,420 22,440 12,930 8,310 Calendar year 1957 : Max 2,090 Min 114 Mean 487 Ac-ft 352,600 Water year 1957-58 : Max 1,900 Min 114 Mean 562 Ac-ft 406,600

Peak discharge (base. 1,600 cfs}. Dec. 20 (12:30 a.m.) 1,770 cfs (5.24 ft); Dec. 26 (4:30 a.m.) 2,060 cfs (5.64 ft); Jan. 30 (8 p.m.) 1,600 cfs (5.00 ft); Feb. 18 (11 a.m.) 1,730 cfs (5.18 ft); Apr. 20 (l a.m.) 2,050 cfs (5.63 ft). * Discharge measurement made on this day. 92 WIND RIVER BASIN

1270. Wind River above Trout Creek, near Carson, Wash.

Location. Lat 4S 048'30", long 121°S4'30", in NE£ sec. 26, T. 4 N., R. 7 E., on left bank 30 ft downstream from bridge, three-quarters of a mile upstream from Trout Creek, and 7 miles northwest of Carson. Drainage area. 108 sq mi. Records available. October 1944 to September 1958. Gage.--Staff gage and crest-stage indicator; gage read twice daily. Datum of gage is 890.3 ft (from river-profile survey). Average discharge.--14 years, 589 cfs (426,400 acre-ft per year). Extremes. Maximum discharge during year, 4,040 cfs Dec. 26 (gage height, 10.67 ft); mini mum observed, 65 cfs Oct. 1; minimum gage height, 1.58 ft Sept. 11, 12. 1944-58: Maximum discharge, 8,880 ofs Feb. 8 1945 (gage height, 15.5 ft, from high- water mark), from rating curve extended above 5,000 cfs; minimum observed, 52 cfs Oct. 27-30, 1945. Remarks.--Records good. Very small regulation by fish hatchery dam above station. Upstream diversions returned to stream above station. Revisions (water years).--WSP 1318: 1946(M).

Rating tables, water year 1957-58 (gage height, In feet, and discharge. In cubic feet per second) Oct. 1 to Dec. 25 Dec. 26 to Sept. 30 1.6 62 5.0 730 1.5 62 5.0 710 2.0 98 6.0 1,160 2.0 107 6.0 1,080 3.0 225 9.0 2,870 3.0 237 8.0 2,100 4.0 430 4.0 430 11.0 4,300 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 TO"66 97 543 1,020 1,710 1.100 617 3§9"608 *354 TSB"169 *» 76 2 90 600 888 1,460 934 647 327 76 3 74 85 492 761 1,260 844 635 584 307 162 97 75 4 72 84 440 680 1,090 782 581 563 301 157 96 74 5 87 *84 590 629 996 758 560 545 301 153 96 73 6 91 84 850 572 960 692 530 533 725 151 95 74 7 85 82 1,980 539 932 659 528 522 470 146 93 73 8 89 79 1,340 522 i,T3o~ 638 576"502 525 348 143 92 72 9 86 7? 1,010 252"482 2,000 620 530 319 145 91 72 10 80 132 790 2,720 *551 620 530 300 142 90 70 11 74 252 654 635 1,970 525 584 536 295 139 88 69 12 73 794 618 920 2,340 505 575 488 281 134 87 S9 13 99 1.360 570 856 2.720 475 563 438 272 129 86 77 14 100 1,616 528 1,100 2,270 452 593 412 256 127 86 11 15 84 710 483 2,240 1,890 448 593 408 255 125 8,4 75 16 77 525 452 1,680 1,940 438 832 420 245 122 83 79 17 77 438 *555 2,090 2,020 430 1,380 428 245 124 82 77 18 73 380 810 1,650 2,280 45S 1,500 450 251 121 82 76 19 72 390 1,560 1,560 1,900 432 2,410 452 219 119 81 74 20 70 351 2,280 1,100 1,580 430 *3,780 420 214 119 80 73 21 68 323 2,040 948 1,370 440 2,720 415 220 117 79 79 22 74 291 2,030 848 1,210 440 2,300 428 204 112 77 79 23 123 271 1,750 928 1,160 505 1,750 440 200 112 76 77 24 164 265 1,600 1,500 1,720 641 1,370 408 194 110 *76 76 25 TIT 257 1,890 1,740 2,040 605 1,140 398 219 *108 74 75 26 135 252 5.100 *1,420 1,690 617 980 405 203 108 73 73 27 122 246 2,090 1,550 1,370 602 816 551 193 107 72 *74 28 109 243 2,060 2,560 1,200 578 719 418 185 105 72 74 29 105 246 1,810 2,216 554 665 376 180 104 80 72 30 109 295 1,460 2,350 551 626 3"68"366 176 103 79 72 31 106 1,220 2, 100 545 102 77 Total 2,861 9,795 37,995 37,970 46,928 18,281 31,694 14,564 8,255 3,980 2,622 2,238 Mean 92.3 326 1,226 1,225 1,676 590 1,056 470 274 128 84.6 74.6 Cfsra 0.855 3 02 11.4 11.3 15.5 5.46 9.78 4.35 2.54 1.19 0.783 0.691 In. 0.99 3.u7 13.08 13.08 16.16 6.30 10.91 5.02 2.84 1.57 0.90 0.77 Ac-ft 5,670 19,430 75,360 75,310 93,080 36,260 62,860 28,8&0 16,530 7,890 5,200 4,440 Calendar year 1957: Max 4,870 Mln 60 Mean 526 cfsm 4.87 In. 66.05 Ac-ft 380,500 Water year 1957-58: Max 3,780 Mln 60 Mean 595 Cfsm 5.51 In. 74.79 Ac-ft 430,700

Peak discharge (base, 3,000 cfs).--Dec. 26 (time unknown) 4,040 cfs (10.67 ft); Apr. 20 (tin unknown) 4,020 cfs (10.65 ft). * Discharge measurement made on this day. WIND RIVER BASIN 93

1285. Wind River near Carson, Wash.

Location. Lat 45°44'10", long 121°48'10", in SW^NE^ sec. 21, T. 3 N., R. 8 E., on right bank three-quarters of a mile upstream from Little Wind River, 1 mile northeast of Carson, and 2f miles upstream from mouth. Records include flow of Little Wind River. Drainage area. 225 sq mi, includes that of Little Wind River. Records available. October 1934 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 112.6 ft above mean sea level (from river- profile survey). Average discharge.--24 years, 1,166 cfs (844,100 acre-ft per year). Extremes. Maximum discharge during year, 9,160 cfs Dec. 26 (gage height, 12.94 ft); minimum daily, 170 cfs Sept. 11, 12. 1934-58: Maximum discharge, 20,000 cfs Dec. 29, 1937 (gage height, 17.30 ft), from rating curve extended above 15,000 cfs by logarithmic plotting; minimum, 123 cfs Nov. 30, 1952; minimum gage height, 2.21 ft Nov. 29, Dec. 1, 1936. Remarks. Records good except those for periods of no gage-height record, which are fair. Low flow occasionally affected by pondage at Forest Service powerplant on Trout Creek. No diversion above station. Revisions (water years) . WSP 964: Drainage area. WSP 1348: 1935-37, 1938(M), 1942-43(MJ, 1945-46(M).

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 25 Dec. 26 to Sept. 30 5.0 160 7.0 1,030 5.1 170 8.0 1,850 5.5 310 8.0 1,780 5.5 282 10.0 4,110 6.0 500 10.5 4,700 6.0 465 12.5 8,270 7.0 1,030 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 182 260 814 2,070 3,850 2,140 1,160 1.190 585 3"2~0~320 220S2S 185 2 TSS 240 1,350" 1,760 3,050 1,690 1,260 1,156 550 185 3 200 230 1,110 1,520 2,550 1,670 1,550 1,110 528 315 215 185 4 217 225 940 1,540 2,200 1,510 1,280 1,060 519 310 215 180 5 238 *226 826 1,210 2,030 1,440 1,190 1,020 519 305 215 180 6 253 226 1,980 1,110 1,910 1,320 1,110 995 *57o"850 305 215 180 7 226 217 4,080 1,020 1,870 1,240 1,040 954 300 210 180 8 232 211 2,660 960 2,190 1,170 981 947 570 295 210 175 9 230 205 1,970 902 5,740 1,120 3ST 947 540 300 210 175 10 215 22T 1,550 SIT 5.890 *1,060 1,280 954 520 290 210 175 11 200 677 1,290 1,550 4,070 1,030 1,270 928 505 285 210 170 12 200 1,800 1,120 2,470 4,970 967 1,190 850 490 270 208 TTO 13 260 5,150 994 2,360 5,850 914 1,190 794 475 265 208 190 14 265 2,250 970 2,810 4,220 876 1,190 752 460 265 206 135-195 15 225 1,660 880 5.410 5,770 850 1,250 734 450 260 206 16 205 1,250 844 4,240 4,250 5S4"824 1,750 740 450 255 206 195 17 205 976 1,070 4,490 4,110 2,680 740 450 260 205 190 18 200 850 *1,650 3,480 4,600 895 5,050 752 410 255 200 185 19 195 874 4,140 2,750 5,750 895 3,240 758 590 250 198 180 20 190 775 5,440 2,250 5,040 902 *8,250 754 380 .250 198 180 21 190 700 4,700 1,950 2,600 995 5,750 704 590 245 195 195 22 200 645 5,240 1,690 2,550 1,060 5,850 699 570 240 192 195 330 600 2,460 1,800 2,250 1,060 2,900 722 560 240 *190 190 23 *235 24 3"50"440 554 2,880 3,180 2,920 1,340 2,570 682 550 188 185 25 522 4,400 3,250 5,770 1,390 2,050 688 580 255 185 185 26 350 518 7,090 2,940 5,590 1,390 1,770 710 560 255 180 180 27 320 492 4,240 *2,790 5,010 1,280 1,570 869 550 230 180 *182 28 300 522 5,100 4,866 2,480 1,190 1,410 694 540 225 180 180 29 280 479 4,420 5,100 - 1,150 1,280 620 540 225 200 178 30 290 479 5,150 5,100 1,170 1 250 550 z"5o~220 195 175 31 280 2,470 4, 900 1 150 gag 190 Total 7,696 21,999 79,798 82,189 94,860 56,672 60,772 25,657 15,841 8,225 6,258 5,495 Mean 248 755 2,574 2,651 3,388 1,185 2,026 828 461 265 202 185 Cfsm 1.10 5.26 11.4 11.8 15.1 5.26 9.00 5.68 2.05 1.18 0.898 0.815 In. 1.27 5.64 15.19 13.58 15.68 6.06 10.04 4.24 2.29 1.36 1.05 0.91 Ac-ft 15,260 45,650 158,500 165,000 188,200 72,740 120,500 50,890 27,450 16,510 12,410 10,900 Calendar year 1957: Max 9,980 Mtn 166 Mean 1,057 Cfsra 4.70 In. 63.74 Ac-ft 764,900 Water year 1957-58: Max 8,230, Mln 170 Mean 1,215, Cfsra 5.40. In.. 73.29. Ac-ft 879,600 Peak discharge (base, 5,700 cfs). Dec. 19 (8 p.m.) 7,020 cfs (11.95 ft); Dee. 26 (1 a.m.) 9,160 cfs (12.94 ft); Dec. 28 (7 p.m.) 5,720 cfs (11.08 ft); Jan. 15 (10 a.m.) 5,800 cf s (11.15 ft); Feb. 10 (5:30 a.m.) 6,590 cfs (11.60 ft); Feb. 13 (1 to 2 a.m.) 6,590 cfs (11.48 ft); Apr. 20 (3 to 4 p.m.) 8.87O cfa (12.80 ft-,1_ * Discharge measurement made on this day. Note. No gage-height record Oet. 9 to Nov. 4, June 7 to Aug. 13, Aug. 25 to Sept. 26; discharge stlmated on basis of recorded range In stage, 1 discharge measurement, and record for station above Trout Creek, near Carson. 94 SANDY RIVER BASIN

1340. Salmon River near Government Camp, Oreg.

Location. Lat 45°16'00", long 121°43'00", in N| sec. 31, T. 3 S., R. 9 E., on right bank near lower end of Red Top Meadows, 3 miles southeast of Government Camp. Drainage area. 8.7 sq mi, approximately. Records available. May 1910 to May 1912, April 1926 to September 1958. Published as "near Rowen 1910-12. Gage. Water-stage recorder. Datum of gage is 3,446.53 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Nov. 21, 1910, staff gage at site a quarter of a mile upstream at different datum. Nov. 21, 1910, to May 31, 1912, and Apr. 21, 1926, to Sept. 30, 1933, water-stage recorder at site 75 ft upstream from former site at different daturas. Average discharge. 33 years (1910-11, 1926-58), 43.8 cfs (31,710 acre-ft per year). Extremes. Maximum discharge during year, 318 cfs Apr. 20 (gage height, 2.66 ft); minimum, 16 cfs Sept. 30. 1910-12, 1926-58: Maximum discharge, 682 cfs Dec. 11, 1956 (gage height, 3.95 ft); minimum, 10 cfs Nov. 27, 1952. Remarks. Records good. No regulation or diversion above station. Revisions (water years). WSP 769: Drainage area. WSP 1398: 1911-12, 1926-27, 1933(M), 1949.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) -0.2 0.2 1.5 128 -.1 .6 2.0 188 1.0 2.5 282 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 22 18 23 36 43 48 34 66 67 56 32 23 2 42 18 28 *34 41 45 34 68 64 5T 33 22 3 28 18 22 32 38 44 32 69 64 52 32 23 4 23 18 21 32 36 42 31 69 65 50 *30 23 5 25 17. 20 30 37 41 32 *69 70 50 30 23 6 22 18 84 30 39 39 32 69 ~78114 50 30 22 7 23 18 ~ ST 29 46 38 34 72 49 32 22 8 22 18 £8. 45 36 37 76 71 48 32 23 9 21 18 45 28 47 34 41 79 75 46 30 *22 10 20 21 40 3O 54 34 6O 82 72 45 30 21 11 *20 26 36 31 47 33 52 78 68 45 29 21 12 21 53 34 43 60 32 54 68 66 45 28 22 13 25 72 31 34 54 32 57 64 65 46 26 22 14 23 36 34 40 48 31 57 65 63 45 26 34 15 2O 27 30 71 71 30 53 69 62 44 26 25 16 20 23 31 52 *83 3O 57 76 *60 44 25 25 17 21 22 30 76 82 30 74 76 59 44 25 23 18 21 *26 30 57 72 29 63 81 58 45 25 22 19 21 24 83 48 68 30 103 84 57 43 25 27 20 21 21 73 44 65 31 234 81 55 41 25 20 21 21 20 55 40 62 32 135 82 55 40 24 25 22 22 20 43 37 62 33 99 83 54 40 23 21 23 22 20 38 41 66 36 82 86 53 39 22 22 24 21 20 52 47 76 *41 74 82 76 38 23 20 25 24 23 77 43 76 36 66 77 68 38 23 22 26 21 23 66 39 62 34 61 84 60 38 22 20 27 20 21 52 42 55 36 59 87 64 39 21 19 28 19 21 64 60 51 36 58 76 63 36 2T il 29 19 19 47 66 - 36 60 72 59 37 26 17 30 21 19 42 54 35 63 69 61 34 23 17 31 20 38 47 34 75 33. 22 Total 691 718 1,433 1,321 1,586 1,098 1,928 2,334 1,966 1,352 821 665 Mean 22.3 23.9 46.2 42.6 56.6 35.4 64.3 75.3 65.5 43.6 26.5 22.2 Cfsm 2.56 2.75 5.31 4.90 6.51 4.07 7.39 8.66 7.53 5.01 3.05 2.55 In. 2.95 3.O7 6.13 5.65 6.78 4.69 8.24 9.98 8.4O 5.78 3.51 2.84 Ac-ft 1,370 1,420 2,840 2,620 3,150 2,180 3,820 4,630 3,900 2,680 1,63O 1,320 Calendar year 1957: Max 140 Hin 17 Mean 41.8 Cfsm 4.80 In. 65.23 Ac-ft 30,270 Water year 1957-58: Max 234 Min 17 Mean 43.6 Cfsm 5.01 In. 68. O2 Ac-ft 31,560 Peak discharge (base, 15o cfs). Dec. 6 (7:30 p.m.) 212 cfs (2.15 ft); Apr. 2O (12:3O p.m.) 318 cfs (2.66 ft); June 6 (9 a.m.) 19O cfs (2.O1 ft).______* Discharge measurement made on this day. SANDY RIVER BASIN 95

1370. Sandy River near Marmot, Oreg.

Location. Lat 45°23'10", long 122°08'00", in NE£ sec. 24, T. 2 S., R. 5 E., on right bank 1 mile southwest of Marmot, 1? miles upstream from Sandy River Dam of Portland General Electric Co., and 6 miles downstream from Salmon River. Drainage area. 262 sq mi. Records available. August 1911 to September 1958. Published as "at Marmot" October 1912 to September 1913. Records for January 1916 to June 1919, published as "below dam, near Marmot," obtained by combining records for Sandy River below dam, near Marmot with records for Sandy River Canal near Marmot. Gage. Water-stage recorder. Datum of gage is 742.4 ft above mean sea level {Portland General Electric Co. bench mark). Aug. 15, 1911, to Dec. 20, 1915, and July 2, 1919, to Oct. 19, 1933, at site half a mile upstream at different datum. Average discharge. 47 years, 1,349 cfs (976,600 acre-ft per year). Extremes. Maximum discharge during year, 19,900 cfs Apr. 20 (gage height, 14.31 ft); minimum, 306 cfs Oct. 21, 22 (gage height, 3.29 ft). 1911-58: Maximum discharge, 29,200 cfs Jan. 6, 1923 (gage height, 17.5 ft, site and datum then in use), by computation of peak flow over dam; minimum, 195 cfs Nov. 27, 28, 1952. Remarks. Records excellent. No regulation or diversion above station. Cooperation. Water-stage recorder inspected by employee of Portland General Electric Co. Revisions (water years). WSP 594: Drainage area. WSP 1288: 1912(M), 1915, 1922, 1924, 1934(M).WSP 1318: 1932(M).

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second)

3.3 310 8.0 4,900 4.0 635 11.0 11,200 5.0 1,290 13.0 16,300 6.0 2,200 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 406 a360 865 1,740 2,980 1,550 986 1.640 872 823 435 402 2 656 a360 al,455" 1,510 2,400 1,420 972 1,600 805 T5T 440 366 3 679445" a340 al,100 1,350 2,040 1,320 930 1,550 775 712 455 338 a340 958 1,210 1,770 1,230 891 1,480 787 690 414 330 4 *342 5 430 a320 865 1,120 1,650 1,210 853 1,450 *853 690 402 6 390 a320 6,210 1,040 1,550 1,130 829 1,400 1,680 690 422 350 7 *390 *314 8,510 986 1,640 1,080 817 1,370 1,290 690 430 354 8 378 314 4,060 986 1,690 1,030 855 1,410 1,010 652 450 366 9 386 326"310 2,510 553"944 1,730 993 944 1,420 958 613 435 370 10 358 1,860 2,200 958 1,560 1,410 1,000 596 435 358 11 330 540 1,530 1,320 2,200 917 1,540 1,390 979 602 430 338 12 326 1,140 1,300 2,260 3,060 891 1,440 1,230 941 491 398 326 13 503 5.720 1,130 2,110 3,410 *859 1,450 1,110 944 565 382 34? 14 602 2,250 1,200 2,540 2,730 835 1,470 1,060 930 *560 378 414 15 440 1,510 1,080 4,490 3,270 817 1,330 1,060 891 540 382 525 16 390 1,120 1,040 3,080 5,070 555"799 1,700 1,110 865 530 386 422 17 370 910 1,100 4,700 3,920 3,010 1,120 865 550 386 455 18 346 884 *1,180 37556" 3,590 835 2,940 1,140 853 570 378 370 19 330 1,150 7,780 2,580 2,930 811 3,450 1,190 811 565 374 510 20 318 958 8,410 2,100 2,520 865 15,700 1,140 781 530 374 422 21 330"310 811 5,360 1,770 2,210 944 8,960 1,110 793 505 386 445"535 22 728 3,260 1,510 2,040 986 5,870 1,100 787 500 398 23 374 679 2,430 1,620 2,000 1,020 4,220 1,160 751 495 382 394 24 358 640 3,640 2,060 2,160 1,260 *3,290 1,080 937 480 394 378 25 430 635 5,560 2,070 2,480 1,220 2,680 1,060 979 480 398 430 26 470 684 5,230 1,830 2,220 1,190 2,290 1,000 811 480 394 414 27 394 630 3,770 *1,760 1,940 1,100 2,000 1,140 872 490 386 382 28 362 841 4,950 2,940 1,710 1,110 1,810 1,030 944 505 4lO"362 378 29 346 723 3,740 3,900 - 1,080 1,730 910 823 405 358 30 382 690 2,640 3, 550 1,070 1,670 859 898 470 402 342 31 374 2 090 3 590 1,000 898 445 382 Total 12,603 24,547 96,758 67,249 69,110 32,315 78,191 37,627 27,495 17,861 12 , 480 11,756 Mean 407 818 3,121 2,169 2,468 1,042 2,606 1,214 916 576 403 392 Cfsm 1.55 3.12 11.9 8.28 9.42 3.98 9.95 4.63 3.50 2.20 1.54 1.50 In. 1.79 3.48 13.73 9.55 9.81 4.59 11.10 5.34 3.90 2.54 1.77 1.67 Ac-ft 25,000 48,690 191,900 133,400 137,100 64,100 155,100 74,630 54,540 35,430 24,750 23,320 Calendar year 1957: Max 8,960 Mln 296 Mean 1,268 Cfsm 4.84 In. 65.70 Ac-ft 918,300 Water year 1957-58: Max 15,700 Mln 310 Mean 1,337 Cfsm 5.10 In. 69.27 Ac-ft 968,000 Peak discharge (base, 7,700 cfs). Dec. 6 (10 p.m.) 16,400 cfs (13.05 ft); Dec. 19 (7 p.m.) 15,200 efs (11.82 ft); Apr. 20 (5 p.m.) 19.900 cfs (14.51 ft).______* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for Salmon River near Government Camp and Little Sandy River near Bull Run. 96 SANDY RIVER BASIN

1390. Lake Ben Morrow near Bull Run, Oreg.

Location. La t 45°29'00", long 122 004'50", in SW£ sec. 16, T. 1 S., R. 6 E., in control house at Bear Creek Dam on Bull Run River, 8| miles northeast of Bull Run. Drainage area. 74 sq mi, approximately. Records available. October 1928 to September 1958. Prior to October 1937, published as Bull Run Reservoir near Bull Run. Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Portland water Bureau). Prior to Oct. 9, 1930, staff gage at same site and datum. Extremes.--Maximum contents during year, 30,840 acre-ft June 30 (elevation, 1,045.63 ft); minimum, 16,470 acre-ft Oct. 2 (elevation, 1,005.11 ft). 1928-58: Maximum contents, 31,600 acre-ft Mar. 31, 1931 (elevation, 1,047.40 ft); minimum after first filling, 10,170 acre-ft Dec. 2, 1952 (elevation, 980.52 ft). Remarks.--Records excellent. Lake is formed by concrete dam completed in March 1929 for water supply of city of Portland. Storage began about Apr. 29, 1929; first filling occurred May 15, 1929, Capacity of reservoir, 26,930 acre-ft at crest of spillway (elevation, 1,036.0 ft); capacity of reservoir increased to 30,140 acre-ft at eleva tion 1,044.0 ft by installation of three 40- by 8-foot gates in October 1954. Dead storage, 213 acre-ft below elevation 890.0 ft (center of outlet valves). Cooperation. Water-stage recorder inspected and capacity table furnished by Portland water Bureau. Revisions (water years). WSP 814: 1935(M).

Month-end elevation and total contents, water year Oetober 1957 to September 1956 Elevation Contents Change in Date contents (feet)t (acre-feet) (acre-feet)

Dec. 31......

Feb. 28...... -560 Mar. 31...... 1,037.22 -60 Apr. 30...... 1,037.28 +20

1,035.37 26,690 -3,840

+2,410 t Elevation at 12 p.m. g Computed from once-daily staff-gage readings. SANDY RIVER BASIN 97 1400. Bull Run River near Bull Run, Oreg. Location (revised). Lat 45°27'00", long 122°08'20", in SW£ sec. 25, T. 1 S., R. 5 E., on left bank three quarters of a mile upstream from intake of pipeline for water supply of city of Portland and 5 miles east of Bull Run. Drainage area. 102 sq mi. Records available. September 1907 to September 1958. Records for January 1895 to August 1907, published in WSP 370, have been found to be unreliable and should not be used. Sage. Water-stage recorder. Datum of gage is 759 ft above mean sea level (topographic survey of 1954). Prior to July 27, 1909, staff gage at site 1 mile downstream at dif ferent datum. July 27, 1909, to July 25, 1916, water-stage recorder at present site at datum 1.0 ft lower, July 26, 1916, to July 21, 1924, at datum 1.0 ft higher, and July 22, 1924, to Aug. 24, 1928, at datum 0.5 ft higher. Average discharge. 51 years, 749 cfs (542,300 acre-ft per year), adjusted for storage since 1929. Extremes. Maximum discharge during year, 10,500 cfs Apr. 20 (gage height, 9.18 ft); min- Imuin7 111 cfs Sept. 14, 15, 20. 1907-58: Maximum discharge, 20,600 cfs Mar. 31, 1931 (gage height, 13.8 ft), by computation of peak flow over dam; minimum, 63 cfs Aug. 13-16, 1926. Remarks. Records good. Plow regulated by Bull Run Lake and by Lake Ben Morrow (see p. 96 ); adjustment applied only for storage in Lake Ben Morrow. During 1957 outlet works at Bull Run Lake were repaired to provide usable storage capacity of several thousand acre-feet, but during 1958, as in past years, flow from lake was not artificially regulated, reaching river through surface and underground channels. During 1958, a small earth-fill dam was constructed on North Fork Bull Run River to provide several hundred acre-feet of storage capacity. No diversions above station. Revisions (water years) . WSP 1288: 1910-11, 1913, 1920-23, 1926, 1929. WSP 1318: 1919(M).See also Records available. Revised figures of discharge for the water year 1952, superseding those published in WSP 1248, are given herewith: Adjusted for change In contents of Lake Ben Morrow Discharge (cfs) Runoff Month Mean Inches Acre-feet mile 527 5.17 5.96 32,410 737 7.26 98.31 534,800 Calendar year 1952...... 510 5.00 68.08 370,300 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 146 130 769 950 2,030 790 716 600 172 809 238 164 2 ISO"212 130 1,450 800 1,450 694 672 5BT 162 TTS 230 162 3 125 1,100 700 1,150 620 610 505 I6T 250 194 151 4 *121140" 125 820 600 947 555 565 469 166 328 188 146 5 125 666 550 856 555 546 432 *194 545 220 182 6 150 *124 4,110 480 766 500 505 412 520 277 230 192 .7 150 T54 5,350 440 8IT 478 478 388 508 225 230 202 8 150 124 2,620 440 982 444 356 262 373 220 220 198 9 155 135 1,530 440 1,210 432 590 TSS"156 310 220 220 149 10 145 153 1,090 500 2,170 404 1,560 510 212 198 146 11 135 202 844 1,100 1,670 388 1,210 170 507 215 205 129 12 135 349 683 1,900 2,510 559 92H 170 280 220 255 140 13 160 5,760 575 1,800 5.160 334 802 164 350 194 210 135 14 180 3,630 656 1,900 2)050 *320 947 267 227 188 220 155 15 165 2,010 605 5,000 2,060 514 850 180 277 *250 220 118 16 160 1,330 gO"B~550 2,100 2,690 507 1,400 210 271 262 240 120 17 155 880 2,900 2,180 3Tf 2,140 208 271 228 210 124 18 145 749 749 2,000 1,970 588 2,040 20S 268 192 180 126 19 140 982 5,030 1,400 1,510 592 2,740 208 255 170 200 155 20 145 808 *5.570 1,100 1,190 404 9,550 205 186 TTS 210 125 21 140 635 3,750 1,000 989 452 4,280 222 200 200 228 158 22 145 518 2,090 800 880 500 2,990 228 222 210 T5S"245 151 23 155 444 1,460 *856 922 528 2,090 218 222 212 146 24 140 388 2,230 1,820 996 778 *1,570 198 215 235 188 144 25 150 362 4,040 2,000 1,190 796 1 , 330 196 416 250 250 162 26 150 428 3,600 1,490 1,180 844 1,020 200 250 238 *230 155 27 145 388 2,300 1,290 1,060 734 868 198 265 238 184 158 28 135 523 3,100 2,460 910 722 760 168 548 268 160 156 29 135 460 2,500 2,500 - 820 688 168 348 274 153 155 30 145 416 1,600 2,220 838 650 160 996 196 146 626 31 140 1 * 200 2 ,680 738 168 230 164 Total 4,629 19,957 63,242 44,216 41,492 16,815 45,265 8,061 9,031 7,952 6,412 5,000 Mean 149 665 2,040 1,426 1,482 542 1,509 260 301 257 207 167 te-ft 9,180 39,580 125,400 87,700 82 , 300 35,550 89,780 15,990 17,910 15,770 12,720 9,920 Adjusted for change in contents of Lake Ben Morrow 251 741 2,043 1,435 1,472 541 1,509 301 311 194 81.6 167 Cfsm 2.46 7.26 20.0 14.1 14.4 5.30 14.8 2.95 3.05 1.90 0.800 1.64 In. 2.83 8.11 25.08 16.22 15.05 6.12 16.51 5.40 3.40 2.19 0.92 1.82 Ac-ft 15,410 44,100 125,600 88,250 81,740 33,290 89,800 18,510 18,490 11,930 5,020 9,910

Calendar year 1957: Max 7,410 Min 121 Mean 712 Ao-ft 515, 60P Water year 1957-58: Max 9,550 Min 3.18 Mean 745 Ao-ft 539,600 Adjusted Calendar year 1957; Mean 712 Cfsm 6.98 In. 94.78 Ao-ft 515,600 Water year 1957-58: Mean 749 Cfsm 7.34 In. 99.65 Ao-ft 542,000 Peak discharge (base, 5,400 cfsi).~Dec. 6 (9:50 p.m.) 9 ,130 cfs (8.49 ft); Dec. 19 (7 p.m.) 9,510 ofs (8.58 ft); Apr. 20 (12:50 p.m. ) 10, 500 ofs (9.18 ft) * Discharge measurement made on this day. Note. No gage-height record Oct. 5 to Nov. 5, Dec. 26 to Jan. 22, Aug. 13-20; discharge estimated on basis of unpublished reoorda for station below the headwords downstream and the intervening diversion. 98 SANDY RIVER BASIN

1415. Little Sandy River near Bull Run, Oreg.

Location. Lat 45°25'00", long 122°10'20", in NE-£ sec. 10, T. 2 S., R. 5 E., on right bank three -eighths of a mile upstream from Portland General Electric Co.'s dam and tunnel from Sandy River and 3 miles east of Bull Run. Drainage area. 22.3 sq mi. Records available. --May to July 1911, October 1911 to March 1912, June 1912 to April 1913, July 1919 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage . Water-stage recorder. Datum of gage is 712 ft above mean sea level (topographic survey of 1954). May 23, 1911, to Apr. 29, 1913, staff gage at site three-quarters of a mile downstream at different datum. July 1, 1919, to Sept. 30, 1931, water-stage recorder at present site at datum 0.28 ft higher. Average discharge. --39 years (1919-58), 143 cfs (103,500 acre-ft per year). Extremes . Maximum discharge during year, 2,780 cfs Apr. 20 (gage height, 6.26 ft), from rating curve extended above 700 cfs; minimum, 16 cfs Sept. 9-12. 1911-13, 1919-58: Maximum discharge, 5,320 cfs Nov. 20, 1921 (gage height, 9.18 ft, present datum), from rating curve extended above 2,200 cfs by logarithmic plotting; mini mum, 8 cfs Aug. 20, Sept. 16, 17, 1940. Remarks . Records good except those for period of shifting control, which are fair. No regulation or diversion above station. Cooperation. Water-stage recorder inspected by employee of Portland General Electric Co. Revisions 1920 ions (water years) . WSP 1154: 1949. WSP 1248: Drainage area. WSP 1288: 1912, 20-21 (M) , 1922-23, 1931, 1945. WSP 1318: 1920. Rating tables, water year 1957-58, except period of shifting control (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 19 Dec. 2O to Sept. 3O 2.0 24 3.9 46O 1.7 3.9 440 2.3 50 4.5 84O 2.0 27 4.5 84O 2.8 120 5.0 1,300 2.3 50 5.O 1,3OO 3.3 230 2.7 99 6.0 2,450 3.3 217 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 32 45 164 164 332 134 117 139 56 107 21 21 2 IBo"133 39 230 145 261 122 107 T5T 45 QQ 21 20 3 37 156 129 212 110 99 115 45 75 20 19 4 68 34 124 113 183 101 94 104 *52 64 2O 18 5 64 31 106 1O2 168 102 90 96 43 57 20 *18 58 30 815 94 152 93 84 92 156"176 52 20 17 6 *61 *28 7 904 '5o"90 170 92 54 86 48 2O 17 8 61 26 388 179 86 98 83 96 44 20 17 9 60 ~2S25 227 93 194 83 132 80 86 40 20 16"16 10 44 167 112 267 79 302 75 81 38 19 11 37 66 138 185 245 76 192 75 75 36 19 16 12 36 197 115 329 495 72 ISO 70 72 35 19 16 13 98 456"648 100 245 501 *70 137 64 74 33 19 2O 14 100 TST 399 313 68 158 60 67 *33 19 46 15 68 288 106 470 392 67 139 57 60 31 19 63 16 55 180 105 309 562 69"66 248 55 55 29 19 35 17 48 129 112 562 39T 332 53 51 29 18 42 18 42 127 *117 33? 313 72 274 51 47 28 18 31 19 37 182 1,020 231 234 72 425 50 44 28 18 68 20 34 129 9^4 192 192 76 2,O6O 47 42 27 18 46 21 33"31 1O3 638 168 164 88 728 46 40 27 18 91 22 88 344 146 152 93 562 44 38 26 17 6T 23 47 80 234 162 162 99 *403 47 38 26 17 46 24 43 69 480 220 154 139 321 44 117 25 17 40 25 57 69 800 258 17O T5T 251 44 16O 24 17 67 26 70 88 578 2O7 156 129 21O IB-42 104 23 17 54 27 51 73 412 *207 146 115 179 103 23 17 40 28 43 112 586 381 139 134 164 49 120 23 17 35 29 39 84 381 438 - 137 154 49 96 22 22 31 3O 54 81 258 336 136 146 42 137 22 24 29 31 55 200 399 120 48 21 Total 1,759 3,573 11,101 7,3O8 7,002 3,O27 8,440 2,082 2,356 1,184 590 1,056 Mean 56.7 119 358 236 250 97.6 281 67.2 78.5 38.2 19.0 35.2 Cfsm 2.54 5.34 16.1 1O.6 11.2 4.38 12.6 3.O1 3.52 1.71 0.852 1.58 In. 2.93 5.96 18.51 12.19 11.68 5.05 14.08 3.47 3.93 1.97 O.98 1.76 Ac-ft 3,490 7,O9O 22,020 14,500 13,890 6,OOO 16,740 4,13O 4,67O 2,350 1,170 2,09O Calendar year 1957: Max 1,620 Mln 15 Mean 137 Cfsm 6.14 In. 83.13 Ac-ft 98,880 Water year 1957-58: Max 2,O6O Mln 16 Mean 136 Cfsm 6.1O In. 82.51 Ac-ft 98,140 Peak discharge (base. 1,4OO cfs). Dec. 6 (LO p.m.) 1,950 cfs (5.58 ft); Dec. 19 (7:30 p.m.) 1,690 cfs (5.36 ft)j Apr. 20 (12 m.) 2,780 cfs (6.26 ft). » Discharge measurement made on this day. Note . Shifting-control method used May 1 to Sept. 3O. SANDY RIVER BASIN 99

1425. Sandy River below Bull Run River, near Bull Run, Oreg.

Location. Lat 45°27'20", long 122°15'00", in NW£ sec. 30, T. 1 S., R. 5 E., on left bank 1 mile downstream from Bull Run River and 2 miles northwest of Bull Run. Drainage area. 440 sq mi. Records available.--April 1910 to September 1914, October 1929 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Altitude of gage is 200 ft (from river-profile map). Apr. 27, 1910, to Sept. 30, 1914, staff gage at site three-quarters of a mile upstream at different datum. Average discharge. 33 years, 2,328 cfs (1,685,000 acre-ft per year). Extremes. Maximum discharge during year, 32,400 cfs Apr. 20 (gage height, 15.35 ft); minimum, 92 cfs Nov. 10; minimum daily, 99 cfs Nov. 3, 10. 1910-14, 1929-58: Maximum discharge 58,000 cfs Mar. 31, 1931 (gage height, 20.6 ft); minimum, 53 cfs Oct. 4, 1931 (gage height, 0.53 ft); minimum daily, 63 cfs Oct. 12, Nov. 9, 1952. Remarks. Records excellent. Plow slightly regulated by Bull Run Lake and Lake Ben Morrow of Portland Water Bureau; considerable diurnal fluctuation from Bull Run powerplant of Portland General Electric Co. Ho diversion above station for irrigation during year; about 98,700 acre-ft was diverted from Bull Run River by Portland Water Bureau. Revisions (water years). WSP 1288: 1910-12, 1914(M), 1948.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 94 5.0 2,870 137 7.0 5,860 288 10.0 13,000 2.5 740 14.0 27,000 3.5 1,420 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 584 536 1,560 3,140 6,040 2,580 1,910 2.620 979 1.890 566"592 142 2 893 312 3,030 2,720 4,620 2,270 1,850 2,530 1,040 1,400 454 3 1.050 99 2,440 2,430 3,840 2,050 1,750 2,370 994 1,100 245 552 4 1,710 1,980 *1,040 742 550 488 814 456 1,960 2,140 3,270 2,050 474 5 692 447 1,680 1,740 2,990 2,020 1,540 2,180 1,000 998 578 6 216 457 9,150 1,800 2.750 1,840 1,570 2,100 2.280 804 542 342 7 *652 487 15,200 1,730 2,820 1,800 1,480 2,050 2,070 902 572 154 8 667 *486 7,460 1,630 3,040 1,680 1,500 1,960 1,280 852 570 450 9 632 242 4,620 1,620 5,250 1,450 1,670 1,760 1,590 844 514 472 10 516 99 3,310 i, 6V6 4,810 1,590 5,150 1,660 1,440 840 140 484 11 440 706 2,640 2,490 4,520 1,490 5,140 1,450 1,400 808 524 527 12 395 1,260 2,240 4,370 6,150 *1,460 2,590 1,610 1,400 696 574 552 13 316 7.480 1,950 4,400 7,520 1,410 2,440 1,480 1,500 552 576 454 14 2,650 1,480 1,160 645 541 507 933 5,720 1,970 4,750 5,540 1,320 *666 15 734 3,860 1,770 8,200 5,810 1,240 2,490 1,520 1,020 471 655 16 672 2,640 1,780 5,720 8.560 954 5,530 1,570 1,190 640 422 490 17 553 1,880 1,860 8.350 6,980 5,530 1,550 1,080 660 144 526 18 510 1,680 2,110 6, 526 6,400 i!sso 5,750 1,060 1,070 802 468 489 19 356 2,200 12, 600 4,640 5,110 1,420 6,120 1,490 1,050 631 491 633 20 100 1,900 15.600 3,660 4,250 1,470 26.800 1,440 996 516 506 570 21 488 1,560 10,800 3,220 5,650 1,640 15,500 1,560 857 584 516 504 22 474 1,370 6,350 2,730 5,260 1,670 10,600 1,540 540 645 556 608 23 613 1,130 *4,590 2,760 5,090 1,590 *7,750 1,400 980 642 434 588 24 602 881 5,900 4,320 5,440 2,270 6,100 1,210 1,240 654 155 612 25 587 1,090 10,500 4,570 4,020 2,100 4,840 965 1,620 607 442 526 26 469 1,200 9,840 3,800 5,820 2,090 4,100 1,210 1,290 566 498 660 27 332 1,150 6,740 3,450 5,430 2,060 3,490 1,400 1,180 588"279 519 402 28 621 1,100 8,870 *5,980 2,980 2,090 5,110 1,310 1,420 518 180 29 579 1,280 7,170 6,840 - 2,060 2,870 1,170 1,170 625 520 550 30 507 1,140 5,110 6,630 2,070 2,740 848 1,950 626 468 955 31 576 3,890 7,230 1,990 1,040 614 400 Total 17,573 44,848 174,690 125,230 125,500 54,554 159,810 48,471 57,586 22,978 14,590 15,010 Mean 567 1,495 5,635 4,040 4,482 1,755 4,660 1,564 1,255 741 471 500 Cfsm 1.29 3.40 12.8 9.18 10.2 3.98 10.6 3.55 2.85 1.68 1.07 1.14 In. 1.49 3.79 14.77 10.58 10.61 4.59 11.82 4.10 5.18 1.94 1.25 1.27 Ac-ft 34,860 88,950 346,500 248,400 248,900 107,800 277,500 96,140 74,550 45,580 28,940 29,770 Calendar year 1957: Max 18,900 Min 99 Mean 2,139 Cfsra 4.86 In. 66.03 Ac-ft 1,549,000 Water year 1957-58: Max 26,800 Mln 99 Mean 2,248 Cfsm 5.11 In. 69.37 Ac-ft 1,628,000 Peak discharge (base, 17,000 cfs). Dec. 6 (11 p.m.) 26,100 cfs (15.78 ft); Dec. 19 (7 p.m.) 25,700 efs (15.17 ft); Apr. 20 (Z p.m.) 52,400 cfs (15.55 ft). * Discharge measurement made on this day. 100 WASHOUGAL RIVER BASIN

1435. Washougal River near Washougal, Wash.

Location. Lat 45°37'20", long 122°18'00", in SE£ sec. 27, T. 2 N., R. 4 E., on right tank half a mile upstream from Cougar Creek and 4 miles northeast of Washougal. Drainage area. 108 sq mi. Records available. September 1944 to September 1958. Gage. Staff gage and crest-stage indicator; gage read twice daily. Altitude of gage is 175 ft (from topographic map). Average discharge. 14 years, 896 cfs (648,700 acre-ft per year). Extremes. Maximum discharge during year, 11,800 cfs Apr. 20 (gage height, 12.09 ft); minimum observed, 41 cfs Sept. 10 (gage height, 1.38 ft). 1944-58: Maximum discharge, 17,700 cfs Dec. 9, 1953 (gage height, 15.56 ft); mini mum observed, that of Sept. 10, 1958; minimum gage height observed, 1.38 ft Oct. 7, 1952, Sept. 10, 1958. Remarks. Records good. No regulation or diversion above station. Revisions (water years). WSP 1248: 1945-47, 1948(M), 1949-50, 1951(P).

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 6 Dec. 7 to Sept. 30 1.5 62 3.0 570 1.3 28 3.0 600 1.7 104 4.0 l.lSO 1.5 62 4.0 1,260 2.0 182 6.0 2,870 1.7 104 6.0 3,270 2.5 350 8.0 5,450 2.0 182 8.0 5,760 Z.5 355 10.0 8,600 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 *212 829 1,020 2,810 988 650 185 53 2 itt 194 1,520 939 1,740 884 694 52(5 165 f» ft 51 3 128 176 1,160 800 1,450 794 728 474 162 179 74 51 4 102 165 864 734 1,320 734 666 454 168 168 70 51 5 151 162 692 633 1,040 716 622 412 146 157 68 48 6 149 146 4,590 616 946 650 551 339 464 144 66 44 7 136 141 4,540 542 884 638 499 364 *368 156 62 44 8 141 133 2,360 515 1,3§0~ 655 464 343 271 155 62 44 9 146 133"128 1,180 56"§~ 2,120 628 WS 351 238 155 62 44 10 128 953 4.560 611 1,430 319 234 126 62 ii 11 106 1,150 848 1,870 1,940 *611 1,060 304 225 123 62 44 12 102 3,060 699 2,780 3,280 589 818 282 206 121 58 46 13 339 4.280 616 1,870 4,040 565 722 275 197 114 58 60 14 386 2,156 699 2,630 2,500 536 716 261 191 114 58 116 15 238 1,500 584 4.750 2,090 520 704 247 179 106 58 SU. 16 182 1,090 563 3,070 2,400 563"505 1,900 241 171 100 58 141 17 157 802 710 2,400 2,060 2,810 231 162 102 58 168 16 131 675 *1,210 1,660 1,960 655 5,120 218 151 104 55 123 19 109 763 6.680 1,570 1,480 655 4,800 215 144 102 55 114 20 111 642 5,420 1,100 1,420 666 7,990 206 133 100 55 165 21 106 575 4,170 1,010 981 764 3,800 200 133 100 55 17« 22 109 472 2,610 884 890 688 2,660 197 133 95 SI 126 23 362 398 2,300 854 918 854 1,860 266 ill- 95 51 114 24 508 390 3,290 1,970 1,310 830 1,370 191 ifr 91 *53 118 25 515 374 4,590 2,420 1,750 866 1,150 191 268 86 51 106 26 476 362 4,220 1,840 2,050 1.040 967 182 203 82 49 116 27 382 339 3,700 *1,770 1,610 660 878 218 194 80 iS. 109 28 306 445 4,140 *2,960 1,050 752 752 197 191 *78 49 100 29 288 398 3,580 2,970 - 682 644 168 191 76 64 95 an 30 285 378 2,450 5,270 694 628 165 222 7fito 57 Ot 31 234 1,520 4,220 650 T§T 78 55 Total 6,724 21,833 73,287 54,479 51,619 21,819 46,293 8,820 6,014 3,605 1,834 2,862 Mean 217 728 2,364 1,757 1,844 704 1,543 285 200 116 59.2 95.4 Cfsm 2.01 6.74 21.9 16.5 17.1 6.52 14.3 2.64 1.85 1.07 0.548 0.883 In. 2.32 7.52 25.24 18.76 17.78 7.51 15.94 5.04 2.07 1.24 0.63 0.99 Ac-ft 13,340 43,310 145,400 108,100 102,400 45,280 91,820 17,490 11,930 7,150 3,640 5,680 Calendar year 1957 : Max 8,420 Hln 48 Mean 765 Cfsm 7.08 "In. 96.15 Ac-ft 553,800 Water year 1957-58: Max 7,990 Hin 42 Mean 820 Cfsm 7.59 In. 103.04 Ac-ft 593,500 Peak discharge (base, 5,000 cfs). Nov. 13 (time unknown) 5,200 cfs (7.83 ft); Dec. 6 (time unknown) 10,100 cfs (11.04 ft); Dec. 19 (time unknown) 10,400 cfs (ll-ZO ft); Dec. 25 (time unknown) 5,140 cfs (7.52 ft): Jan. 15 (time unknown) 6,800 cfs (8.74 ft); Feb. 10 (time unknown) 5,300 cfs (7.65 ft); Apr. 20 (time unknown) 11,800 efs (12.09 ft).______* Discharge measurement made on this day. WILLAMETTE RIVER BASIN 101

1455. Middle Fork Willamette River above Salt Creek, near Oakridge, Oreg.

Location. Lat 43 e43'30", long 122°26 I 20", in NE-fc sec. 27 (revised), T. 21 S., R. 3 E., on left bank 400 ft upstream from Salt Creek and 2 miles southeast of Oakridge. Drainage area. --392 sq mi. Records available . October 1913 to September 1914, September 1935 to September 1958. Monthly discharge only September 1935, published in WSP 1318. Gage . Water-stage recorder. Datum of gage is 1,202.8 ft above mean sea level (river- profile survey). Oct. 3, 1913, to Sept. 30, 1914, staff gage at site 600 ft upstream at different datum. Average discharge. 24 years, 1,153 cfs (834,700 acre-ft per year). Extremes . --Maximum discharge during year, 17,400 cfs Feb. 16 (gage height, 9.13 ft); , 280 cfs Sept.. 29.. 1913-14, 1935-58: Maximum discharge, 34,000 cfs Dec. 28, 1945 (gage height, 12.06 ft), from rating curve extended above 13,000 cfs by logarithmic plotting; max imum gage height, 12.71 ft Dec. 22. 1955; minimum discharge, 201 cfs Nov. 27 to Dec. 2, 1936 (gage height, 1.53 ft). Remarks . Records excellent except those for periods of no gage-height record, which are

Revisions (water years). WSP 1248: 1914.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used July 10-12) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30

2.2 265 5.0 3,090 2.2 280 5.0 3,400 3.0 660 6.0 5,200 2.5 420 6.0 5,800 3.5 1,050 7.0 7,700 3.0 730 7.0 8,800 4.0 1,590 8.0 11,000 3.5 1,150 9.0 16,800 4.0 1,740 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 368 305 485 1,610 2,780 1,690 al.OOO 1,210 1,380 779 555"390 a340 2 415 305 500 1,430 2,210 1,686 al.OOO 1,240 1,300 77? a340 3 618 301 475 1,280 1,870 1,500 al.OOO 1,280 2,000 716 385 a340 4 505 301 460 1,130 1,640 1,370 a950 1,300 2,010 681 380 338 5 495 297 455 1.020 1,450 1,290 a900 1,410 1.690 a650 375 330 6 480 297 588 *1,030 1,300 1,200 a850 1,440 2,090 a600 375 325 7 490 297 1,990 1,090 1.270 1,110 a850 1,360 2.300 a600 370 316 8 445 297 1,590 1,090 1,456 1,070 aSOO 1,430 2,290 a550 370 316 9 *435 297 1,130 1,030 1,520 1,030 »ez4 1,640 2,290 a550 370 348 10 415 313 912 1,050 2,490 999 872 1,750 1,890 *530 366 330 11 381 345 808 1,350 2,150 970 916 1,910 1,610 524 366 320 12 363 432 730 2,460 2,910 934 925 1.6ZO 1,510 494 356 320 13 470 1,680 667 2,570 3,070 907 1,030 1,340 1,350 488 356 390 14 355"648 1.820 630 1,940 3,020 680 1,090 1.200 1,240 476 352 15 1,150 594 2,510 7,560 856 1,040 1,236 1,130 465 352 348 16 440 816 618 2,460 *13.100 824 1,180 1,400 1,080 465 348 338 17 395 667 793 3,070 7,466 806 2,080 1,640 1,050 455 348 334 18 368 *808 1,130 2,980 5,400 786 2,980 1,840 1,040 465 346 325 19 354 1,070 3,440 2,270 4,150 §00"779 2,270 1,880 1,060 460 348 330 20 345 856 6.720 1,840 3,340 2,270 1,810 1,020 450 338 330 21 333 716 7,200 1,600 2,750 934 3,220 *1,850 934 435 338 320 22 333 630 3,670 1,360 2,380 943 3,340 1,8OO 680 435 330 325 23 329 594 2,250 1,370 2,290 934 2,696 1,800 943 435 325 330 24 329 600 2,010 2,300 2,590 999 2,180 1,800 1,270 430 325 325 25 329 588 2,540 2,300 4,220 1,020 1,850 1,650 1,140 425 330 325 26 333 570 3,530 1,860 3,480 1,010 1,600 1,690 997 425 330 316 27 321 535 2,950 1,610 2,690 952 1,420 1,570 970 425 334 316 28 317 530 6,520 3,140 2,190 925 1,320 1,570 907 415 334 312-312 29 313 505 4,420 6,620 907 1,230 1,350 640 410 a340 30 309 490 5, 500 934 1,200 1,240 766 405 a360 312 31 305 1^980 3 850 1,030 1,380 395 a340 Total 12,486 18,412 66,535 66,920 92,750 32,271 44,877 47,630 40,997 15,805 10,964 9,931 Mean 403 614 2,146 2,159 3,312 1,041 1,496 1,536 1,367 510 354 331 Cfsm 1.03 1.57 5.47 5.51 8.45 2.66 3.82 3.92 3.49 1.30 0.903 0.844 In. 1.18 1.75 6.31 6.35 8.80 3.06 4.26 4.52 3.89 1.50 1.04 0.94 Ac-ft 24,770 36,520 132,000 132,700 184,000 64,010 89,010 94,470 81,320 31,350 21,750 19,700 Calendar year 1957: Max 10,300 Mln 289 Mean 1,099 Cfsm 2.80 In. 38.04 Ao-ft 795,500 Water year 1957-58: Max 13,100 Mln 297 Mean 1,259 Cfsm 3.21 In. 43.60 Ac-ft 911,600 Peak discharge (base. 4,800 cfs). Dec. 20 ( 9 to 10 p.m.) 10,700 cfs (7.92 ft); Dec. 28 (10:30 a.m.) 7,600 cfs (6.96 ft); Jan. 29 (2:30 p.m.) 9,530 cfs (7.58 ft); Feb. 16 (3:3O a.m.) 17,400 cfs (9.13 ft). Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for station below North Fork, near Oakridge. 102 WILLAMETTE RIVER BASIN

1465. Salmon Creek near Oakridge, Oreg.

Location. Lat 43°45'30", long 122 023'00", in SW£ sec. 7, T. 21 S., R. 4 E., on right bank a quarter of a mile upstream from Slide Creek and 4 miles east of Oakridge. Drainage area.--117 sq mi, at cable a quarter of a mile above gage, where all discharge measurements are made. Records available. October to November 1909 (gage heights and one discharge measurement only), February 1913 to October 1919, October 1933 to September 1958. Published as Kelsey River near Hazeldell and Salmon Creek near Hazeldell, 1909. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,421.83 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Oct. 1, 1914, staff gages at several sites within 3 miles of present site at various datums. Oct. 1, 1914, to Oct. 14, 1919, water-stage recorder at site 1 mile downstream at different datum. Average discharge. 31 years (1913-19, 1933-58), 423 cfs (306,200 acre-ft per year). Extremes. Maximum discharge during year, 3,940 cfs Feb. 16 (gage height, 5.54 ft); minimum, 142 cfs Nov. 8-10. 1913-19, 1933-58: Maximum discharge, 10,400 cfs Dec. 11, 1956 (gage height, 11.18 ft), from rating curve extended above 4,000 cfs on basis of slope-area measure ment of peak flow; minimum, 63 cfs Jan. 8, 1937 (gage height, 0.87 ft). Remarks. Records good. No regulation above station. About 1,100 acre-ft diverted aTiove station during year by city of Oakridge. Tunnel and control gates that were built to divert part of outflow from Waldo Lake into Salmon Creek basin were not used during year but there is leakage under control gates; 12.3 cfs measured July 19, 1957. Revisions (water years) . WSP 794: 1934(M). WSP 814: Drainage area. WSP 1124: 1935, 1942(M), 1943, 1946(M). WSP 1248: 1915, 1918.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30 1.3 134 2.5 550 1.4 135 3.O 940 1.5 177 3.0 940 1.7 225 4.0 1,900 2.0 325 5.O 3,120 2.0 345 6.0 4,540 2.5 580 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 177 143 197 787 94O 661 393 545 530 394 187 163 2 216 148 210 673 778 SST 398 550 51O 394 TBT 163 3 255 146 2OO 586 680 560 385 550 535 377 184 16O 4 222 144 194 525 592 520 377 555 540 353 184 160 5 220 144 192 485 530 5OO 365 570 530 337 184 160 6 2O7 144 354 *48O 495 460 357 575 82O 321 181 160 7 207 144 1,24O 490 485 440 349 540 8767S6- 313 181 158 8 192 142 950 490 490 421 345 570 301 181 16O 9 *192 142 645 475 495 412 *345~ 628 731 289 181 166 10 182 146 505 465 598 398 377 654 661 *281 181 160

11 175 154 428 490 604 390 394 B"98689 604 273 178 158 12 172 197 337 7O4 778 385 403 586 257 178 160 13 204 418 341 769 970 377 460 515 530 249 *178 229 14 235 460 317 704 980 365 495 480 490 245 175 I5T 15 204 36T 297 1,000 1,940 357 470 490 460 237 175 172 16 190 305 297 970 *5,600 349 50O 54O 430 233 175 169 17 182 270 301 1,260 *2,45o 341 703 586 412 225 175 166 18 175 *342 325 1,200 1,880 337 860 628 390 222 175 163 19 170 389 784 950 1,430 337 964 647 408 218 175 163 20 166 317 2.120 805 1,230 357 1,320 622 440 214 172 163 21 161 270 1,980 652 1,060 398 1,990 *598 403 211 172 160 22 161 249 1,260 545 940 398 1,720 598 -&s369 211 169 160 23 153 233 904 535 852 403 1,32O 640 208 166 160 24 156 233 787 666 *876 43O 1,060 628 540 204 166 160 25 161 230 922 659 988 426 884 586 550 200 163 158 26 161 222 1,090 598 948 421 752 592 500 ZOO 16O 158 27 154 214 1,000 568 844 4O8 654 545 485 197 163 158 28 152 212 1,290 850 745 403 598 515 455 197 163 155 29 150 202 1,770 *1,460 - 403 560 46O 421 194 175 152 3O TSS 197 1,280 1,47O 393 550 43O 3O8 TgO"19O 169 15O 31 150 960 1,160 393 §55 166 Total 5,658 6,923 23,517 23,471 29,198 13,057 20,353 17,629 15,836 7,935 5,416 4,908 Mean 183 231 759 757 1,043 421 678 569 528 256 175 164 Cfsm 1.56 1.97 6.49 6.47 8.91 3.60 5.79 4.86 4.51 2.19 1.50 1.40 In. 1.80 2.20 7.48 7.46 9.28 4.15 6.47 5.60 5.03 2.52 1.72 1.56 Ac-ft 11,22O 13,730 46,650 46,550 57,91O 25,900 40,370 34,970 31,410 15,740 10,740 9,730 Calendar year 1957: Max 2,380 Mln 142 Mean 435 Cfsm 3.72 In. 50.43 Ac-ft 314,600 Water year 1957-58: Max 3,600 Mln 142 Mean 476 Cfsm 4.O7 In. 55.27 Ac-ft 344, 9OO Peak discharge (base, 1,500 cfs). Dec. 20 (9 p.m.) 2,570 cfs (4.5O ft); Dec. 28 (12 p.m.) 2,080 cfs (4.05 ft); Jan. 29 (4 p.m.) 1,8OO cfs (3.80 ft); Feb. 16 (6 a.m.) 3,940 cfs (5.54 ft); Apr. 21 (5 a.m.) 2,050 cfs (4.10 ft).______* Discharge measurement made on this day. WILLAMETTE RIVER BASIN 103

1475 . North Fork of Middle Fork Willamette River near Oakridge , Oreg .

Location. Lat 43°45'25", long 122°30'15", in SW£ sec. 7, T. 21 S., R. 3 E., on left bank 1 mile upstream from mouth and 2j miles northwest of Oakridge. Drainage area. 246 sq mi. Records available . October 1909 to March 1916, September 1935 to September 1958. Octo- bar 1909 to September 1912 published as "near Hazeldell." Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,029.6 ft above mean sea level (river- profile survey). Prior tto Feb.. 26,, 1916,, water-stage recorder or staff gages at sev eral sites within three-quarters of a mile of present site at various datums. Sept. 16, 1935, to Oct. 3, 1938, staff gage at present site and datum. Average discharge. 29 years (1909-15, 1935-58), 789 cfs (571,200 acre-ft per year). Extremes . Maximum discharge during year, 7,980 cfs Feb. 16 (gage height, 10.90 ft); minimum , 143 cfs Sept. 30. 1909-16, 1935-58: Maximum discharge, 17,000 cfs Dec. 28, 1945 (gage height, 16.6 ft), from rating curve extended above 8,000 cfs by logarithmic plotting; mini mum, 26 cfs Oct. 14, 1939. Remarks . Records good except those for period of shifting control, which are fair. 'Tunnel and control gates built to divert part of outflow from Waldo Lake into Salmon Creek basin not used during year. Occasional diurnal fluctuations during low-water periods caused by log ponds above station. Revisions (water years). WSP 1248: 1914-16.

Rating tables, water year 1957-58, except period of shifting control (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 16 Feb. 17 to Sept. 30 2.2 156 4.0 895 2.1 143 4.0 900 2.5 22O 6.0 2,510 2.5 Z35 6.0 2,510 3.0 370 8.0 4,500 3.0 400 9.0 5,70O 3.5 590 11.0 8,100 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 172 166 269 1,570 2,O80 1.29O 675 1,020 744 507 215-220 161 2 215 162 320 1,350 1,750 1,14O 660 1,020 750 550 159 3 326 160 299 1,200 1,540 1,040 635 1,000 756 472-558 210 157 4 287 16O 289 1,070 1,360 942 605 972 744 210 155 5 269 160 278 981 1,230 9OO 580 1,000 685 444 205 155 6 251 158 64O 954 1,130 828 570 981 960 420 202 151 7 275 158 2,820 560 1.100 7 SO 570 912 1.140 424 198 147 8 235 160 2,020 967 1,156 744 561 956 1,140 400 195 147 9 »22fl 156 1,300 954 1,130 726 5526"3B" 1,010 1,100 584 195 161 10 215 IBs 967 967 1,340 71O 1,050 988 564 192 157 11 199 174 770 1,150 1,360 685 695 1,090 888 555 185 155 12 197 232 644 1,910 1,920 660 710 981 858 542 185 151 13 287 939 540 2,O2o 2,330 640 774 828 7 SO 528 183 22"8281 14 342 967 481 1,740 2,280 610 852 750 705 522 181 15 2"S(5 6~6lf 441 2,240 3,330 590 828 726 650 515 178 195 16 230 505 437 2,150 7,520 566 900 780 605 3O1 178 176 17 211 417 445 2,7OO 4,870 556 1,430 858 561 295 176 170 18 199 *512 530 2,580 3,61O 548 1,90O 906 554 292 174 163 19 189 650 1,520 2,040 2,820 538 1,94O 924 516 286 172 161 20 184 495 5,720 1,700 2,330 57o 2,670 900 64? 285 168 165 Zl 178 413 4,720 1,400 2,010 640 5,560 882 615 274 168 161 22 178 360 2,750 1,260 1,780 655 3,080 858 545 265 163 165 23 178 332 1,93O 1,190 1,670 670 2,460 948 561 265 165 163 24 176 326 1,76O 1,520 1,690 738 1,99O 948 680 259 159 161 25 ISO 32 O 1,930 1,540 1,97O 756 1,690 894 655 255 155 157 26 186 320 2,450 1,360 1,900 750 1,460 912 590 247 153 155 27 178 3O5 2,200 1,270 1,700 720 1,290 870 575 242 15? 155 28 172 302 4,290 1,890 1,460 7O5 1,170 798 552 255 155 147 29 170 284 3,430 3,230 - 700 1,080 695 525 250 172 147 30 166 272 2,400 3,230 700 1,040 650 516 228 185 145 31 166 1,880 2,560 690 695 225 165 Total 6,697 10,391 50.47O 51,653 6O,16O 22,787 57,562 27,794 21,558 10,321 5,613 4,947 Mean 216 346 1,628 1,666 2,149 735 1,252 897 719 555 181 165 Cfsm 0.878 1.41 6.62 6.77 8.74 2.99 5.09 5.65 2.92 1.55 0.756 O.671 In. 1.01 1.57 7.63 7.81 9.O9 3.44 5.68 4.20 5.26 1.56 0.85 0.75 Ac-ft 13,28O 2O,61O 100, 1OO 102,500 119,300 45,2OO 74,500 55,130 42,760 2O.47O 11,150 9,810 Calendar year 195V: Max 5,74O Min 136 Mean 767 Cfsm 3.12 In. 42.34 Ac-ft 555,600 Water year 1957-58: Max 7,320 Min 145 Mean 849 Cfsm 3.45 In. 46.85' Ac-ft 614,800 Peak discharge (base, 3,500 cfs). Dec. 2O (9 p.m.) 6,84O cfs (9.95 ft); Dec. 28 (9:3O a.m.) 4,820 cfs (8.27 ft); Jan. 29 (2 p.m.) 5,840 cfs (7.57 ft); Feb. 16 (4 a.m.) 7,98O cfs (10.90 ft); Apr. 21 (7 a.m.) 5,720 cfs (7.25 ft).______* Discharge measurement made on this day. Note. Shifting-control method used Nov. 15-18. 104 WILLAMETTE RIVER BASIN

1480. Middle Pork Wlllamette River below North Pork, near Oakridge, Oreg.

Location. Lat 43°48'05", long 122°33 1 35", In SW£ sec. 27, T. 20 S., R. 2 E., on left bank half a mile downstream from Whitehead Creek, 4 miles downstream from North Pork of Middle Pork Willamette River, and 7 miles northwest of Oakridge. Drainage area. 924 sq mi. Records available . March 1911 to September 1912, July 1923 to September 1958. Published as "near Hazeldell" 1911-12 and as "at Eula" 1923-50. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 934.76 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Mar. 22, 1911, to Sept. 30, 1912, staff gage at site 4 miles upstream, Just below North Pork, at different datum. July 1, 1923, to Aug. 11, 1935, staff gage and Aug. 12, 1935, to Sept. 30, 1950, water-stage recorder, at site 4 miles downstream at different datum. Average discharge.--36 years (1911-12, 1923-58), 2,737 cfs (1,982,000 acre-ft per year). Extremes. Maximum discharge during year, 35,500 cfs Peb. 16 (gage height, 9.44 ft); minimum, 740 cfs Sept. 30. 1911-12, 1923-58: Maximum discharge, 81,800 cfs Dec. 28, 1945 (gage height, 18.8 ft, from floodmark, site and datum then in use), from rating curve extended above 39.000 cfs by logarithmic plotting; minimum observed, 450 cfs Nov. 24, 25, Dec. 5, 6, 1929, Sept. 4-6, 16, 17, 1931. Remarks. Records excellent except those for period of shifting control, which are good. No diversions; slight regulation above station by log ponds. Revisions______(waterc years).------WSP 694: 1925-28. WSP 814: Drainage area for site at Eula. WSP 1248:1924, TS25(M),1925 1926-28, 1929(M), 1930, 1933, 1946(M). WSP 1398: 1927(M).

Rating tables, water year 1957-58, except period of shifting control (gage height, in feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 16 Feb. 17 to Sept. 30 1.2 710 4.0 6,40O 1.2 710 3.0 3,54O 1.5 1,O5O 6.0 14,200 1.5 1,030 4.0 6,20O 2.0 1,760 9.0 32,000 2.O 1,690 7.O 19,000 3.0 3,680 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 897 798 1,060 4,930 7,520 4,540 2,590 3,190 3,190 2,080 555"997 810 2 1,O3O 787 1,18O 4,34O 6,070 4)020 2,540 3,23O 3,06O 2.100 800 3 1,650 776 1,090 3,870 5,30& 3,640 2,470 3,250 3,850 2,020 986 ,79O 4 1,41O 776 1,050 3,420 4,58O 3,280 2,32O 3,250 4,100 1,370 975 790 5 1,310 765 1,03O 3,150 4,14O 3,120 2,210 3,450 3,54O 1,750 953 780 6 1,260 765 1,580 *3,O7O 3,750 2,94O 2,160 3,500 4,640 1,680 942 770 7 1,300 765 6,660 3,O90 3. 66O 2,760 2,110 3,300 5.290 1,720 931 760 8 1,170 765 5,350 3,110 3,966 2,680 2,060 3,410 5,160 *1,600 931 76O 9 1,150 765 3,630 3,04O 3,870 2,630 2.O5O 3.8OO 5.O1O 1,510 931 843 1O *1,080 776 2,880 5,020 5,410 2,57O *2,160 4,050 4,280 1,44O 920 800 11 990 853 2,42O 3,580 5,070 2,500 2,290 4.55O 3,760 1,4OO 909 79O 12 954 1,O50 2,150 5,730 6,610 2,410 2,34O 3,800 3.56O 1.36O *898 79O 13 1,230 3,360 1,95O 6.58O 7,940 2,34O 2,540 3,170 3,190 1.34O 887 j.,070 14 1,680 4.040 1,810 5,300 7.84O 2,250 2,720 2,880 2,960 1,300 876 1,626 15 1,366 2,680 1,680 6,610 16,600 2,180 2,650 2,840 2,740 1,260 876 909 16 1,170 1,950 1,7OO 6,580 29.7OO 2,100 2,86O 3,190 2,570 1,250 876 854 17 1,060 1,580 1,920 8,33O *1?;200 2,O6O 4,550 3,61O 2,47O 1,230 876 821 18 99O 1,82O 2,44O 8,190 12,400 2,03O 6,660 3,950 2,390 1,250 865 800 19 942 *2,490 7,150 6,340 9,760 2,000 5,840 4,1OO 2,360 1,220 854 aSOO 20 908 2,020 20,10O 5,350 8,040 2,060 7,O40 *3,970 2.59O 1,190 843 aSOO 21 886 1,680 18.7OO 4,650 6,690 2,320 10.3OO 3,970 2,360 1,150 843 aSOO 22 875 1,450 9,960 4,O6O 5.75O 2,36O '10,106 3,920 2,180 1,140 832 aSOO 23 864 1,340 6,430 3,900 5,430 2,340 7,840 4,1OO 2,380 1,130 832 aSOO 24 853 1,340 5,630 5,600 5,720 2,480 6,140 4,180 3,020 1,110 821 a8OO 25 853 1,31O 6,67O 5,690 *8,16O 2,520 5,190 3.88O 2,9OO 1,090 810 aSOO 26 897 1,300 9,000 4,900 7,500 2,520 4,490 4.O20 2,590 1,07O S1O a760 27 842 1,230 7,770 4,320 6,200 2,410 3,920 3.68O 2,500 1.05O SIB"800 aTSo" 28 831 1,220 16,8OO 7,O1O 5,240 2,340 3,560 3,560 2,410 1,030 a750 29 8O9 1,140 12,300 14.200 - 2,340 3,340 3,060 2,230 1.020 843 *750 30 798 1,080 8,050 13,100 2,36O 3,210 2 j 82O 2.13O 1,026 876 7Rnt ou 31 w§ 6,070 9, 880 2,450 j,660 1,O20 832 Total 32,848 42,671 176,210 174,990 22O.O5O 80,550 120,250 110,520 95,410 42,400 27,421 24,307 Mean 1,060 1,422 5,684 5,645 7,859 2,598 4, OO8 3,565 3, ISO 1,368 885 81O Cfsm 1.15 1.54 6.15 6.11 8.51 2.81 4.34 3.86 3.44 1.48 0.958 O.877 In. 1.32 1.72 7.09 7.04 8.83 3.24 4.84 4.45 3.84 1.71 1.10 0.98 Ac-ft 65,150 84,64O 349, 50O 347,100 436,500 159,800 2 38,500 219,200 189,200 84, 10O 54,39O 48,210 Calendar year 1957: Max 22,4OO Mln 68O Mean 2,832 Cfsm 3.O6 In. 41.61 Ac-ft 2,O5O,OOO Water year 1957-58: Max 29,7OO Mln 750 Mean 3,144 Cfsra 3.4O In. 46.19 Ac-ft 2,276,000 Peak discharge (base, 11,000 cfs). Dec. 20 (12 p.m.) 25,40O cfs (8.O6 ft); Dec. 28 (11 a.m.) 19,800 cfs (7.14 ft); Jan. 29 (4 p.m.) 18,800 cfs (6.95 ft); Feb. 16 (6 a.m.) 35,500 cfs (9.44ft). * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for station above Salt Creek, near Oakridge. Note. Shifting-control method used Nov. 13 to Dec. 7. WILLAMETTE RIVER BASIN 105

1490. Lookout Point Reservoir near Lowell, Oreg.

Location. Lat 43°54'50", long 122°45'00", in SE£ sec. 13, T. 19 S., R. 1 W., in elevator house at right end of spillway section of dam across Middle Pork Willamette River, l£ miles east of Lowell. Drainage area.--991 sq mi. Records available. November 1953 to September 1958. Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Corps of Engineers). Nov. 7, 1953, to Dec. 4, 1954, approximate elevations obtained from refer ence marks and Dec. 5, 1954, to Feb. 4, 1955, staff gage, at same site and datum. Extremes. Maximum contents during year, 451,100 acre-ft June 9 (elevation, 927.86 ft); minimum, 113,000 acre-ft Dec. 17 (elevation, 822.20 ft). 1953-58: Maximum contents, that of June 9, 1958; minimum observed, 91,200 acre-ft Dec. 1, 1954 (elevation, 811 ft). Remarks. Reservoir is formed by earth-fill dam with concrete gate and spillway section, completed in 1954 by Corps of Engineers. Planned storage began in November 1953. Total capacity is 456,000 acre-ft and usable capacity is 349,400 acre-ft between ele vations 819 (proposed lower limit of operation) and 929 ft (top of spillway gates). Reservoir used for flood control, improvement of nagivation, power generation, pollu tion abatement, and other purposes. Capacity table computed by Corps of Engineers. Figures given herein represent total contents.

Capacity table, water year 1957-58 (elevation, in feet, and total contents, In acre-feet)

822 112,600 860 205,700 900 338,800 830 129,600 870 235, 600 910 377,300 840 152,600 880 267,800 920 417,800 850 178,000 890 302,300 930 460,300 Total contents, in acre-feet, at 12 p.m., water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 298.600 218,800 122,100 234,200 187,300 218,200 275,000 382,900 439,700 442,700 441,300 405,000 2 295,900 216,300 120, 600 214,100 183,400 204, 900 277,600 384,700 441,900 442,800 440,000 402,100 3 292,500 214,100 120,500 194,100 177,600 202,000 279,900 386,600 444,900 442,800 440,700 398,700 4 288,600 211,200 120,000 174,800 170, 400 205,500 282,000 388,800 445,200 443,900 439,500 395,500 5 285,000 208, 500 118,600 154,100 162,300 209,400 284,900 391,100 441,600 443,700 439,100 392,300 6 281,700 205,300 119,800 139,900 153,800 212,900 288, 100 392,500 444,300 443,200 438,600 389,700 7 278,200 202,400 130,900 130, 700 151,300 216,300 289,600 393,300 447 , 000 443,100 438,000 386,900 8 274,700 199,500 140,000 127,400 152,600 219,400 290,900 394,200 449,300 443,100 437,400 382,700 9 271,000 196,700 140, 500 121,600 154,700 222,300 292,600 395,800 448, 800 443,600 436,700 379,900 10 267,300 194,000 137,200 117,800 158,300 225,100 293,700 397,200 443, 800 444,000 436,000 377,300 11 263,700 190,500 130,600 117,500 158, 900 227,700 295,100 399,300 441,600 444,100 435,300 373,800 12 260,300 186,600 125,600 122,100 164,800 230,200 298,600 400,300 441,200 444,400 434,600 369,600 13 257 , 600 186,100 122,100 128,900 170,600 232,500 302,900 398,300 441,000 444,600 433,800 366,100 14 255,600 184,000 120,500 130,300 174,300 234,500 305 , 900 397,300 441,800 444,900 432,900 362,800 15 253,300 179,900 119,300 133,500 203,600 236,600 308,600 396,900 442,200 444,900 431,800 358,200 16 251,100 173,600 115,400 135,300 286,600 238, 300 311,900 399,800 440,700 445,000 432,400 353,700 17 249,100 166,400 113,400 137,000 306, 100 240,000 318,800 401,900 441,400 445,000 430,100 349,200 18 247,000 162,100 114,100 138,500 326,600 241,600 330,300 404,700 442,500 445,000 428,600 344,800 19 245,000 159", 400 125,800 136,400 329,700 243,100 340,700 407,100 443,600 444,700 427,600 340,500 20 242,900 155,100 172,100 132,000 322 , 000 244,900 353,500 409,200 444,300 444,500 426,700 335,700 21 240,700 150,600 213,500 126,300 310,500 247,000 372,300 412,200 443,900 444,200 425,500 331,400 22 238,800 146,000 231,300 122,200 297,200 250,000 385,300 414,200 443,100 443,800 424,300 326,800 23 237,000 142,000 232,100 122, 400 282,600 253,100 417,800 442,800 443,400 423,000 322,300 24 234,900 138, 200 226,000 123,900 268,600 255,000 421,600 445,900 442,900 421,700 317,700 25 233,100 133,200 222,500 125,600 262,600 257,700 386)700 424,600 445,000 442,400 419,400 313,400 26 231,000 129,000 £29,800 125,600 256,800 260,400 385,200 427,200 444,800 442,500 417,400 309,000 27 228,900 124,400 233,000 120, 600 247,600 262,800 383,900 429,400 444,900 442,500 415,700 304,800 28 227,100 122,500 262, 200 127,400 234,400 264,300 381,400 431,600 444,600 441,900 414,200 300,700 29 225,300 118,500 274,000 149,000 268,100 382,600 433,000 444,100 441,700 412,500 295,900 30 223,500 120,000 268,100 196,300 271,900 381,700 434,900 443,600 441,300 410,300 291.400 31 221,700 252,700 183,800 273.600 WiSafl 441,000 408,000 865.44 825.55 875.42 852.16 869.62 881.72 911.09 924.63 926.11 925.51 917.61 886 . 90 l:l -79,900 -101,700 +132,700 -68,900 -( 50, 600 +39,200 +108,100 +55,500 +6,400 -2,600 -33,000 -116,600 Calendar year 1957...... t +61,500 Water year 1957-58...... t -10,200 t Elevation, In feet, at end of month. * Change In contents, in acre-feet.

534540 O -60 -8 106 WILLAMETTE RIVER BASIN

1500. Middle Fork Willamette River near Dexter, Oreg. Location. Lat 43°56'40", long 122°50'10", near center of sec. 5, T. 19 S., R. 1 W., on right bank three-quarters of a mile upstream from Lost Creek and 2 miles northwest of Dexter. Drainage area. 1.001 sq ml. Records available. October 1946 to September 1954 (published as "at Lowell"), June 1955 to September 1958. Gage. Water-stage recorder. Altitude of gage is 600 ft (from river-profile map). Prior ~^o Aug. 23, 1950, staff gage and Aug. 23, 1950, to Sept. 30, 1954, water-stage recorder, at site 4 miles upstream at different datum. Average discharge. 11 years, 3,613 cfs (2,616,000 acre-ft per year), adjusted for storage. Extremes. Maximum discharge during year, 14,900 cfs Jan. 3 (gage height, 7.81 ft); minimum daily, 200 cfs Dec. 20, 21, Feb. 16, 17. 1946-54, 1955-58: Maximum discharge, 62,600 cfs Jan. 18, 1953 (gage height, 12 46 ft, site and datum then In use), from rating curve extended above 33,000 cfs by logarithmic plotting; minimum daily, that of Dec. 20, 21, 1957, Feb. 16, 17, 1958. Maximum stage known, 13.9 ft Dec. 28, 1945 (former site and datum). Remarks. Records excellent except those for periods of no gage-height record, which are Fair. Flow regulated since November 1953 by Lookout Point Reservoir (see preceding page). Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 19 Feb. 20 to Sept. 30 0.47 200 4.0 4,200 1.6 1,040 6.0 8,900 1.0 500 6.0 8,900 3.0 2,620 8.0 15,700 2.0 1,330 8.0 15,700 4.0 4,300 5.0 2,550 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dee. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2,480 1,890 1,020 14,300 6,980 15.100 1,770 3,070 2,180 2.490 1,090 2,090 2 2,450 2,090 1,000 *14.600 8,720 il.ioo 1,430 2,490 2,300 '2,050 1,156 2,230 3 3,080 2,060 1,010 13,600 8,540 5,850 1,250 2,270 2,490 1,820 1,180 2,360 4 5,540 1,940 1,190 13,200 8,510 1,670 1,320 2,320 4,100 1,700 1,130 2,350 5 2,870 2,140 1,880 13,300 8,420 1,490 1.180 2,150 5,320 1,820 1,150 2,280 6 3,130 2,160 1,010 10,200 7,620 1,510 1,210 2,980 3,780 1,680 1,100 2,320 7 2,870 2,230 1,040 8,200 4,840 1,340 1,270 2,840 4,620 2,050 1,220 2,350 8 *2,810 2,140 1,050 4,300 2,970 1,360 1,260 2,950 4,500 1,570 1,240 2,300 9 3,160 2,090 3,050 5,950 2,970 1,310 1,290 2,980 5,360 1,320 1,290 2,180 10 2,450 2,140 4,700 5,180 3,700 1,290 1,270 3,390 7.280 1,160 1,250 2,270 11 2,550 2,590 6,080 4,540 5,000 1,350 1,240 5,480 5,200 1,330 1,250 2,490 12 2,610 2,780 4,560 3,610 3,990 1,320 1,240 3,490 4,100 1,260 1,270 5,010 13 2,680 3,710 3,820 3,640 5,640 1,340 1,210 4.240 3,310 1,170 1,280 2,960 14 2,580 a5,000 2,690 4,640 7,080 1,310 1,250 3,600 2,580 1,190 1,370 2,830 15 2,380 5,120 2,410 4,940 a3,800 1,310 1,270 2,980 2,590 1,190 1,350 2,950 16 2,210 5,040 3,580 6,350 a200 1,320 1,270 2,390 3,180 1,280 1,360 2,950 17 2,030 5,290 3,000 8,020 a255 1,500 1,240 2,480 2,530 1,270 1,340 2,980 18 1,820 5,020 2,270 7,980 a2,800 1,290 1,260 2,580 1,840 1,270 1,350 2,980 19 1,920 3,700 al,400 8,080 8,870 1,510 1,270 2,890 1,900 1,250 1,370 5,010 20 1,900 3,750 a200 8,020 12,100 1,380 1,240 3,040 2,100 1,390 1,300 3.020 21 1,880 4,000 a200 7,950 12,700 1,380 1,260 2,420 2,580 1,400 1,290 2,980 22 1,600 3,890 al,300 6,210 13,000 1,290 5,660 3,000 2,650 1,280 1,420 2,950 23 1,730 3,440 6,210 3,890 13,100 1,290 7,450 2,490 2,540 1,280 1,600 2,960 24 2,080 3,270 9,410 5,000 15,200 1,280 7,600 2,410 2,820 1,320 1,640 3,010 25 1,890 3,770 9,380 5,200 12,100 1,310 5,800 2,490 3,230 1,270 1,500 3,000 26 1,760 3,710 6,170 5,270 11,300 1,460 5,780 2,560 2,590 1,160 1,520 3,010 27 1,770 3,460 7,350 7,100 11,600 1,460 5,220 2,820 2,240 1,110 1,640 2,960 28 1,780 2,300 5,040 3,890 12,500 1,380 4,440 2,400 2,330 1,110 1,630 3,000 29 1,580 2,980 7,330 3,920 - 1,160 3,310 2,540 2,400 1,090 1,630 *3,000 30 1,630 1.010 11,300 as, 000 1,250 3,780 2,040 2,310 1,120 2,000 2,920 31 1,630 13.800 a5,200 2,280 2,000 1,150 1,970 Total 70,850 94,710 124, 450 219,280 212,450 67,590 74,040 85,780 96,850 43,550 42,840 81,700 Mean 2,285 3,157 4,015 7,074 7,588 2,180 2,468 2,767 3,228 1,405 1,382 2,723 Ac-ft 140,500 187,900 246,800 434,900 421,400 134, 100 146,900 170,100 192,100 86,380 84,970 162,000

Adjusted for change In contents in Lookout Point Reservoir Mean 986 1,449 6,172 5,952 8,499 2,818 4,285 3,669 5,336 1,360 845 763 Cfsm 0.985 1.45 6.17 5.95 8.49 2.82 4.28 5.67 3.33 1.36 0.844 0.762 In. 1.14 1.61 7.11 6.86 8.84 5.25 4.78 4.25 3.72 1.57 0.97 0.85 Ac-ft 60,600 86,200 379,500 366,000 472,000 175,300 255,000 225,600 198,500 83,780 51,970 45,400

Calendar year 1957 : Max 13,800 Mln 200 Mean 2,853 Ac-ft 2,066,000 Water year 1957-58 : Max 14, 600 Mln 200 Mean 3,326 Ac-ft 2,408,000 Adjusted Calendar year 1957 : Mean 2,959 Cfsm 2.94 In. 59.86 Ac-ft 2,128,000 Water year 1957-58 : Mean 5,512 Cfsm 5.51 In. 44.92 Ac-ft 2,398,000 Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for station at Jasper and records of release from Dexter Reservoir. WILLAMETTE RIVER BASIN 107

1510. Fall Creek below Winberry Creek, near Pall Creek, Dreg.

Location. Lat 43 056 1 40", long 122°46'30", near center of sec. 2, T. 19 S., R. 1 W., on left bank 10 ft upstream from highway bridge, l| miles downstream from Winberry Creek, 2| miles southeast of town of Pall Creek, and 5 miles upstream from mouth. Drainage area. 186 sq mi. Records available. October to December 1911 (gage heights and discharge measurements only), September 1935 to September 1958. Published as Big Pall Creek near Pall Creek 1911. gage. Water-stage -recorder. Datum of gage is 637.80 ft above mean sea level, datum of 1929. Oct. 1 to Dec. 31, 1911, staff gage a quarter of a mile downstream at different datum. Sept. 9, 1935, to Aug. 3, 1950, staff gage at present site and datum. Average discharge. 23 years, 584 cfs (422,800 acre-ft per year). Extremes. Maximum discharge during year, 10,300 cfs Peb. 16 (gage height, 12.25 ft); minimum, 27 cfs Sept. 8. 1935-58: Maximum discharge, 24,700 cfs Dec. 11,1956 (gage height, 18.80 ft), from rating curve extended above 10,000 cfs by logarithmic plotting; minimum observed, 19 cfs Dec. 1, 1936. Remarks. Records excellent. No diversion above station. Cooperation. Gage-height record collected in cooperation with U. S. Weather Bureau. Revisions (water years). WSP 1094: 1946(M). WSP 1248: Drainage area.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Peb. 15 Peb. 16 to Sept. 30

1.4 3.3 650 1.2 22 3.3 650 1.6 71 5.0 1,800 1.4 5.0 1,800 2.0 145 8.0 4,500 1.7 93 8.0 4,500 2.5 295 11.0 8,300 2.5 295 11.0 8,300 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Peb. Mar. Apr. May June July Aug. Sept. 1 71 56 T5B"107 1,000 1,770 968 366 473 222 172 50 38 2 127 53 *836 1,300 78T 342 424 222 235 49 34 3 274 52 158 692 1,010 650 312 374 283 T9? 47 33 4 274 52 137 585 818 560 295 342 362 170 44 32 5 165 51 129 525 674 560 289 322 277 150 43 31 6 133 50 792 500 565 515 3C"2280 295 555 138 43 30 7 190 35 2,800 468 560 486 277 806 126 42 30 *139 *120 O 50 1,380 450 5~4&~530 478 306 262 926 41 29 9 127 50 752 414 525 298 247 758 115 42 34 10 98 51 520 402 1,070 580 *370 232 550 109 42 34 11 82 58 394 590 914 560 394 235 437 105 41 33 12 74 85 320 2,920 1,460 515 366 235 390 101 *39 32 13 158 810 267 1,910 2,790 473 346 210 330 93 39 109"161 14 T5B"436 1.580 232 1,330 2,610 442 358 200 286 93 38 15 794 207 1,370 5,400 410 312 188 253 89 36 71 16 133 419 216 1,080 7.740 394 432 178 228 85 36 54 17 107 281 236 1,920 *3,660 358"382 937 170 210 81 36 47 18 94 326 491 1,870 2,240 1,450 165 192 81 36 40 19 84 478 3,380 1,300 1,550 390 1,350 158 178 79 36 40 20 74 330 6,350 992 1,150 446 1,740 150 170 75 35 47 21 68 242 5,660 878 896 525 2,730 145 158 70 34 41 22 65 *201 2,920 722 740 482 3,000 *142 145 67 33 46 23 64 175 1,750 692 674 486 2,390 178 160 63 32 40 24 63 160 1,820 950 728 486 1,780 200 259 63 33 39 25 65 148 2,180 986 *1,230 510 1,320 190 253 62 31 38 26 89 139 2,910 854 1,580 575 1,020 158 200 57 23-29 36 27 71 127 2,650 752 1,570 510 818 148 205 57 35 28 64 137 5,810 1,280 1,240 455 692 192 210 56 30 34 29 60 125 3,290 2,980 - 424 605 152 188 54 40 *33 30 115 1, 980 3.080 410 535 T5B"138 180 51 71 32 31 3F 1,360 2,610 386 BT 42 Total 3,760 7,045 51,383 36,938 47,009 15,763 25,745 6,945 9,593 3,060 1,219 1,333 Mean 121 235 1,658 1,192 1,679 508 858 224 320 98.7 39.3 44.4 Cfsm 0.651 1.26 8.91 6.41 9.03 2.73 4.61 1.20 1.72 0.531 0.211 0.239 In. 0.75 1.41 10.27 7.39 9.40 3.15 5.15 1.39 1.92 0.61 0.24 0.27 Ac-ft 7,460 13,970 101,900 73,270 93,240 31,270 51,060 13,780 19,030 6,070 2,420 2,640 Calendar year 1957: Max 6,350 Hln 30 Mean 589 Cfsm 3.17 In. 42.99 Ac-ft 426,500 Water year 1957-58: Max 7,740 Hln 29 Mean 575 Cfsm 3.09 In. 41.95 Ac-ft 416,100 Peak discharge (base, 3,100 cfs). Dec. 7 (6:30 a.m.) 3,360 cfs (6.84 ft); Dec. 20 (11:30 p.m.) 7,540 cfs (10.46 ft); Dec. 28 (9:30 a.m.) 7,290 cfs (10.28 ft); Jan. 29 (4 p.m.) 4,200 cfs (7.70 ft); Peb. 16 (2:30 a.m.) 10,300 cfs (12.25 ft); Apr. 22 (9:30 a.m.) 3,150 cfs (6.61 ft). * Discharge measurement made on this day. 108 WILLAMETTE RIVER BASIN

1520. Middle Pork Willamette River at Jasper, Oreg.

Location. La t 43 e59'50n , long 122°54'20", in SW&SWi sec. 14, T. 18 S., R. 2 W., on right bank 25 ft downstream from highway bridge at Jasper, 650 ft downstream from Hills Creek, and 7f miles southeast of Springfield. Drainage area. 1.340 sq mi. Records available. September 1905 to February 1912, July 1913 to March 1917, October 1952 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Page.--Water-stage recorder. Datum of gage is 513.45 ft above mean sea level, datum of T929, supplementary adjustment of 1947. September 1905 to February 1912 and July 1913 to March 1917, staff gages at approximately same site at different datum. Oct. 22, 1952, to Oct. 1, 1953, wire-weight gage at site 25 ft upstream at same datum. Average discharge. 15 years (1905-11, 1913-16, 1952-58), 4,107 cfs (2,973,000 acre-ft per year). Extremes. Maximum discharge during year, 19,400 cfs Feb. 16 (gage height, 8.61 ft); minimum, 1,020 cfs Aug. 5. 1905-12, 1913-17, 1952-58: Maximum discharge, 94,000 cfs Nov. 23, 1909 (gage height, 17.4 ft, datum then in use, from graph based on gage readings). from rating curve extended above 10,000 cfs by logarithmic plotting; minimum, 366 cfs Dec. 5, 1954. Remarks. Records excellent. Floj» regulated by Lookout Point Reservoir (see p. 105). Revisions (water years) . WSP 1288: 1907-8, 1910-12, 1914-16, drainage area.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 6 Dec. 7 to Sept. 30 2.2 1,260 2.1 1,100 5.0 6,100 3.0 2,210 3.0 2,120 6.0 9,000 4.0 3,850 4.0 3,850 8.0 16,700 6.0 9,600 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2,750 2,090 1.270 16,300 9,800 14.800 2,480 4,030 2,620 2.890 1,180 2,250 2 2,740 2,330 1,366 16,300 10, 700 12,600 2,160 3,350 2,840 2,510 1,230 2,570 3 a3,400 2,300 1,360 15,200 9,940 7,420 1,910 3,000 *3,070 2,160 1,260 2,530 4 a4,000 2,170 1,500 14,300 9,560 2,910 1,930 2,980 4,450 2,000 1,220 2,510 5 aS.SOQ 2,350 2,200 14,300 9,280 2,660 1,800 2,770 5,500 2,120 1,190 2,430 6 a3,400 2,410 2,040 11,200 8,460 2,400 1.770 3,510 4,630 1,970 1,180 2,500 7 a3,200 2,440 4,590 8,670 5,850 2,340 1,896 3,430 5,650 2,270 1,290 2,480 S *3,090 2,350 3,110 5.250 4,270 2,400 1,880 3,490 5,720 1,870 1,300 2,450 9 3,470 2,300 3,970 6,260 4,170 2,400 1,880 3,490 6,120 1,600 1,370 2,330 10 2,760 2,350 5,250 5,800 5,720 2,430 1,940 3,850 7.650 1,330 1,330 2,390 11 2,840 2,780 *6,320 5,720 6,450 2,430 1,930 3,930 5,900 1,510 1,290 2,620 12 2,840 3,080 5,080 6,420 6,400 2,360 1,890 3,970 4,690 1,490 1,320 3,160 13 3,020 4,700 4,450 7,110 9,600 2,320 1,820 4,450 3,970 1,320 1,330 5,290 14 3,270 7.750 3,210 6,720 10,600 *2,200 1,850 3^990 3,250 1,340 1,430 3,i20 15 2,840 6,770 2,870 6,900 13,500 2,120 1,850 3,410 3,160 *1,340 1,380 3,210 16 2,600 5,900 3,930 7,710 14.800 2,110 2,000 2,770 3,670 1,420 1,420 3,180 17 2,410 5,900 3,670 10,900 7,020 2,060 2,560 2,820 2,820 1,430 1,410 3,200 IS 2,130 5,720 3,510 10,600 6,350 2,060 3,410 2,890 2,320 1,430 1,420 3,200 19 2,140 4,480 7,050 9,800 11,200 2,060 3,330 3,200 2.270 1,400 1,430 3,210 20 2,140 4,400 14,000 9,380 14,200 2,150 3,810 3,290 2,420 1,540 1,360 3,250 21 2,140 4,450 12,800 9,040 14,600 3,290 5,120 2,720 2,930 1,560 1,360 3,200 22 1,840 *4,300 7,080 7,320 14,600 2,160 7,260 3,210 3,000 1,420 1,460 3,140 23 1,940 3,850 9,000 *5,380 14,500 2,220 10,400 2,800 2,930 1,410 1,640 3,140 24 2,280 3,610 12,300 6,400 14,800 2,250 *10,000 3,770 3,270 1,440 1,710 3,200 25 2,130 4,010 12,800 6,690 14,800 2,290 7,500 3,840 3,770 1,400 1,580 3,180 26 2,040 3,990 11,200 6,550 14,800 2,540 7,020 2,790 3,110 1,270 1,600 3,160 27 3,030 3,850 11,500 8,010 14,600 2,460 6,280 3,050 2,690 1,190 *1,700 3,090 28 2,030 2,690 15,100 6,250 14,700 2,320 5,450 2,720 2,770 1.170 1,740 3,140 29 1.850 3,350 13,700 9,040 2,020 4,410 2.800 2,790 1,170 1,760 3,140 30 1,670 1.590 14,600 11,000 2,110 4,570 2,340 2,670 1,190 2,120 3,070 31 1,830 16 j 200 7,860 2,070 2 290 1,200 2.11O Total 80,200 110,020 216,040 278,400 295,270 98,960 112,100 98,950 112,650 49,360 45,120 87,120 Mean 2,587 3,667 6,969 8,981 10,550 3,192 3,737 3,192 3,755 1,592 1,455 3,904 Acift 159,100 218,200 428,500 552,200 585,700 196,300 222,300 196,300 223,400 97,900 89,490 173,800 Calendar year 1957: Max 17,400 Mln 1,060 Mean 3,992 Ac-ft 2,890,000 Water year 1957-58: Max 16,300 Mln 1,170 Mean 4,340 Ac-ft 3,142,000 * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for station near Dexter. WILLAMETTE RIVER BASIN 109

1525. Coast Fork Willamette River at London, Oreg.

Location. La t 43°38'30n , long 123°05'05" (revised), in SW$ sec. 20, T. 22 S., R. 3 W., on left bank 0.6 mile north of London and 11 miles south of Cottage Grove. Drainage area. 69 sq mi, approximately. Records available. September 1935 to September 1958. . Water-stage recorder. Datum of gage is 852.58 ft above mean sea level, datum of '929 (levels by Corps of Engineers). Prior to Oct. 17, 1935, staff gage at same site and datum. Average discharge. 23 years, 211 cfs (152,800 acre-ft per year). Extremes. Maximum discharge during year, 5,280 cfs Dec. 20 (gage height, 9.93 ft); minimum, 12 cfs Sept. 8. 1935-58: Maximum discharge, 8,800 cfs Dec. 28, 1945 (gage height, 13.25 ft), from rating curve extended above 4,000 cfs; minimum, 10 cfs for several days in 1936, 1938-40. Remarks . Records excellent except those for periods of backwater from leaves or beaver dam, which are good. Ho regulation or diversion above station.

Rating tables, water year 1957-58, except periods of backwater from leaves or beaver dam (gage height, In feet, and discharge, In cubic feet per second) Oct. I to Dec. 18 Dec. 19 to Sept. 30 1.2 2.3 205 1.1 13 2.4 240 1.3 3.0 490 1.3 23 3.5 740 1.5 40 3.5 725 1.5 40 6.0 2,230 1.9 100 1.7 67 9.0 4,460 2.0 120 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 46 19 34 400 735 lit 272 142 91 74 21 015 2 46 19 4T 344 565 348 260 *152 154 ~SS86 2$ 015 3 95 18-18 39 280 450 304 222 120 298 20 15 4 80 35 233 368 260 196 110 264 57 20 *15 5 76 18 36 205 316 252 175 106 172 50 20 14 6 ~9T108 18 74 187 272 222 172 100 148 48 19 14 7 18 304 169 256 216 160 96 175 45 19 13 8 61 19 193 163 236 219 160 91 256 44 20 CIS 9 46 18 128 151 305 256 151 89 300 44 19 c!4 10 37 34 93 T97J 530 264 148 84 *7T9- 41 19 16 11 33 53 76 409 418 244 140 87 175 39 19 18 12 31 54 67 822 515 222 135 86 145 38 19 16 13 60 322 60 725 605 216 132 79 120 36 18 73-31 14 86 458 54 481 680 193 125 74 106 36 18 15 61 m 50 400 1,980 178 114 72 95 34 18 18 16 48 138 74 340 2,730 166 122 68 87 33 018 17 17 39 93 236 505 1,280 *157 270 66 79 34 017 17 18 34 98 522 454 775 151 360 64 72 35 c!7 16 19 028 104 *1,720 368 580 148-142 296 63 70 34 017 16 20 026 84 3,840 352 458 356 61 67 33 016 16 21 024 68 2,830 352 380 151 490 59 63 31 016 17 22 22 60 1,220 304 332 148 SI5"640 57 60 30 c!6 19 23 22 54 750 312 308 178 67 61 28 c!6 17 24 22 48 735 525 608 181 468 87 79 27 CIS 16 25 25 44 802 500 1,140 208 364 68 67 26 015 016 26 26 40 1,050 400 868 222 296 60 60 24 014 Cl6 27 22 36 922 *340 635 199 240 59 67 24 014 015 28 21 37 1,920 625 505 178 205 79 66 23 c!4 015 29 34 1,180 1,260 - 184 178 61 59 22 CIS 015 30 *ssIS 31 705 1,450 196 157 56 56 22 16 014 31 20 515 1,190 280 72 21 16 Total 1,376 2,319 20,312 14,436 18,828 6,697 7,614 2,515 3,731 1,185 541 492 Mean 44.4 77.3 655 466 672 216 254 81.1 124 38.2 17.5 16.4 Cfsm 0.643 1.12 9.49 6.75 9.74 3.13 3.68 1.18 1.80 0.554 0.254 0.238 In. 0.74 1.25 10.95 7.78 10.15 3.61 4.10 1.36 2.01 0.64 0.29 0.27 Ae-ft 2,730 4,600 40,290 28,630 37,340 13,280 15,100 4,990 7,400 2,350 1,070 976 Calendar year 1957: Max 3,840 Mln 11 Mean 212 cfsm 3.07 In. 41.62 Ac-ft 153,200 Water year 1957-58: Max 3,840 Mln 13 Mean 219 Cfsm 3.17 In. 43.15 Ac-ft 158,800 Peak discharge (base, 1,900 ofs).--Dec. 20 (10 p.m.) 5,280 cfs (9.93 ft); Dec. 28 (8 a.m.) 2,070 ofs (5.90 ft); Feb. 15 (10:30 p.m.) 3,960 cfs (8.37 ft). * Discharge measurement made on this day. c Backwater from leaves or beaver dam. 110 WILLAMETTE RIVER BASIN

1530. Cottage Grove Reservoir near Cottage Grove, Oreg.

Location.--Lat 43°43'00", long 123°02'55", in Jffi£ sec . 28, T. 21 S., R. 3 W., in east abutment of dam on Coast Fork Willamette River, 5| miles south of Cottage Grove. Drainage area. 104 sq mi. Records available. October 1942 to September 1958. Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Corps of Engineers). Extremes. Maximum contents during year, 32,880 acre-ft June 24 (elevation, 790.95 ft); minimum, 2,860 acre-ft Jan. 16 (elevation, 749.92 ft). 1942-58: Maximum contents, 34,750 acre-ft May 3, 1949 (elevation, 792.42 ft); mini mum since first filling, about 580 acre-ft Nov. 13, 1950 (elevation, about 738.2 ft), from graph based on records of inflow and outflow. Remarks. Reservoir is formed by earth-fill dam with concrete spillway completed by Corps of Engineers in 1942; storage began Oct. 31, 1942 (slight pondage at times in water year 1941-42, when inflow temporarily exceeded 2,600 cfs, capacity of outlets). Capacity, 32,940 acre-ft between elevations 719.0 (outlet conduit) and 791.0 ft (crest of spillway). Dead storage negligible. Reservoir used for flood control and improvement of navigation below Albany. Figures given herein represent total contents. Revisions (water years).--WSF 1218: 1950.

Capacity table, water year 1957-58 (elevation, in feet, and total contents, In acre-feet) 749 2,600 765 9,820 785 26,330 750 2,880 770 13, 120 790 31,790 755 4,590 775 16,970 795 37,700 760 6,960 780 21,380 Total contents, In acre-feet, at 12 p.m., water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 4,810 3,690 2,960 3,800 8,230 10,580 19,450 27.080 29,240 32,450 50,990 16.050 2 4,840 3,610 2,996 3,280 5,510 10,810 19.S40 27,300 29,590 52.490 36,900 15,970 3 5,000 3,530 3,010 2,970 5.890 11,050 19,580 27,490 30,370 32,480 30,810 15,900 4 5,100 3,430 3,020 2,990 4,040 11,410 19,770 27,640 30,930 32,460 30,720 15,780 5 5,170 3,350 3,030 2,950 4,190 11,830 20,060 27,790 31,270 32,460 50,640 15,710 6 5,310 3,260 3,150 2,940 4,380 12,140 20,360 27,910 51,610 32,450 30,540 15,640 7 5,420 3,190 3,720 3,000 4,620 12,450 20,610 28,020 51,960 32,410 30,460 15,560 8 5,470 3,150 4,110 3,050 4,820 12,760 20,870 28,130 52,500 52,590 50,590 15,500 9 5,480 3,110 4,230 3,060 5,190 13,180 21,120 28,210 52,740 32,370 50,520 15,430 10 5,480 3,090 3,940 3,180 5,670 13,340 21,390 28,280 52,650 32,540 50,230 15,360 11 5,450 3,120 3,550 3,370 5,760 13,380 21,600 28,390 52,590 32,290 50,150 15,290 12 5,450 3,150 3,340 3,710 6,300 13,470 21,840 28,480 32,570 32,260 50,070 15, 220 13 5,490 3,620 3,400 3,420 6,730 13,660 22,040 28,520 32,510 52,200 29,990 15,190 14 5,580 4,500 3,450 3,030 7,350 13,920 22,210 28,570 32,520 32,140 29,900 15,150 15 5,620 4.890 3,480 2.950 12,150 14,240 22,390 28,620 32,570 52,080 29,810 15,090 16 5.650 4,870 3,600 2,970 19,730 14,520 22,600 28,640 52,660 32,050 29,740 15,030 17 5,630 4,740 4,050 3,130 22.480 14, 790 25,170 28,660 32,720 31,990 29,660 14,990 18 5,600 4,600 4,930 3,000 19,640 15,060 25,910 28,670 32,750 31,940 29,580 14,910 19 5,580 4', 480 9,030 2,980 16,030 15,360 24,590 28,670 52,780 31,880 29,370 14,840 20 5,560 4,320 18,750 3,160 11,500 15,570 25,580 28,670 32,800 31,830 29,080 14,770 21 5,500 4,130 26,160 3,180 8,500 15,830 26,200 28,670 32,810 31,780 28,640 14,710 22 5,440 3,930 26,720 5,010 3,800 16,080 26,750 28,680 32,810 31,710 28,010 14,420 23 5,380 3,700 23, 990 5,090 9,140 16,410 26,010 28,700 52,850 51,660 27,190 13,960 24 5,330 3,500 20,580 3,580 9,730 16,740 25,230 28,820 52,870 51,610 26,240 13,500 25 5,280 3,270 17,640 3,560 11,500 17,130 25,500 28,860 32,800 51,540 25,030 15,050 26 5,220 3,150 16,800 3,190 11,420 17,560 25,710 28,870 32,700 51,470 25,570 12,620 27 5,170 3,100 13,520 3,020 10,390 17,960 26,020 28,900 32,670 31,400 21,900 12,180 28 4,970 3,060 17,470 3,560 10,350 18,280 26,350 28,940 32,600 31,530 20,210 11,740 29 4,590 3,000 15,110 5,840 18,630 26,640 28,950 32,510 41,250 18,560 11,290 30 4,250 2.960 11,210 9, 780 19,010 26 j 860 28 950 52,450 31,160 17,400 10,870 31 3,900 6,830 11,660 19,510 29*070 51,070 16,450 (t) 753.20 750.26 759.76 767.88 765.85 777.74 785.50 787.57 790.58 789.57 774.54 766.67 (*) -910 -940 +3,870 +4,830 -1,310 +8,960 +7,550 +2,210 +3,380 -1,580 -14,640 -5,560

Calendar year 1957...... t +5,870 Water year 1957-58...... t +6,060 t Elevation, In feet, at end of month. t Change In contents. In acre-feet. WILLAMETTE RIVER BASIN 111

1535. Coast Fork Willamette River below Cottage Grove Dam, Oreg.

Location. Lat 43 043'15", long 123°02'55", in NE£ sec. 28, T. 21 S. , R. 3 W., on right bank at bridge a quarter of a mile downstream from Cottage Grove Dam and 5£ miles south of Cottage Grove. Drainage area. 104 sq mi, 'Records available. January 1939 to September 1958. Prior to October 1944, published as "near Cottage Grove." Gage. Water-stage recorder. Datum of gage is 711.00 ft above mean sea level, datum of T929 (Corps of Engineers bench mark). Jan. 1 to Feb. 13, 1939, staff gage at site three-quarters of a mile downstream at different datum. Feb. 14 to Oct. 12, 1939, staff gage at site 0.8 mile downstream at datum 15.82 ft lower. Oct. 13, 1939, to Sept. 30, 1944, water-stage recorder at site 0.8 mile downstream at datum 15.93 ft lower. Average discharge. 19 years, 292 cfs (211,400 acre-ft per year), adjusted for storage. Extremes. Maximum discharge during year, 3,010 cfs Dec. 26 (gage height, 9.05 ft); mini mum, 34 cfs Dec. 7, 8 (gage height, 2.72 ft). 1939-58: Maximum discharge, 3,460 cfs May 4, 1949 (gage height, 9.75 ft); prac tically no flow July 5-7, 1945, Aug. 24, 1947. Remarks. Records excellent except those for period of shifting control, which are good. Flow regulated since 1942 by Cottage Grove Reservoir (see preceding page). No diver sion above station. Revisions (water years). WSP 1448: 1949(M). Rating tables, water year 1957-58, except period of shifting control (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 22 Dec. 23 to Sept. 3O 2.7 32 4.0 280 2.8 44 4.0 295 3.1 76 5.0 660 3.0 69 6.0 1,120 3.5 148 7.0 1,700 3.5 155 9.0 2,980 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 i§ 128 44 ~T%2.010 2,080 503 281 86 70 94 66 204 2 46 70 44 2,590 393 281 72 70 94 66 54 3 46 70 44 536 1,420 298 281 72 72 94 66 52 4 46 70 44 309 414 185 157 72 72 76 66 *51 5 46 70 44 309 351 157 102 72 72 66 66 52 6 46 70 44 245 264 157 102 72 72 66 66 52 7 46 59 40 198 221 157 102 72 72 66 64 52 8 46 46 IT 198 221 157 102 72 72 66 61 52 9 46 4T 102 198 224 157 89 72 237 66 6T 52 10 46 46 269 198 475 288 83 73 *534 66 61 52 11 46 46 320 432 507 323 83 73 242 66 61 52 12 47 46 207 885 428 274 83 73 198 66 61 52 13 47 46 49 1,130 559 198 83 73 175 66 61 52 14 47 48 49 884 643 141 83 73 139 66 61 52 15 47 121 49 599 627 94 83 73 97 66 61 52 16 47 192 50 432 155 94 a"6~80 73 77 66 61 52 17 47 185 50 567 44T *94 73 77 66 61 52 18 47 182 287 663 2,540 85 80 73 77 66 62 52 19 47 180 *380 491 2,600 80 80 73 77 66 110 51 20 47 180 127 382 2,850 80 80 72 77 66 159 51 21 51 180 261 455 1,980 80 233 72 77 66 232 51 22 57 176 1,470 507 330 80 557 73 80 66 344 157 23 57 176 2,420 393 257 80 1.150 72 79 *66 432 233"233 24 57 176 2,710 475 548 80 970 70 105 66 519 25 57 173 2,530 683 890 80 330 7S 119 66 639 233 26 57 112 1,840 731 1,470 80 267 70 119 66 747 233 27 57 73 2,880 *567 1,490 80 168 70 119 66 840 233 28 113 73 925 615 755 80 105 70 119 66 854 233 29 197 73 2,770 574 - 80 105 70 119 66 836 227 30 197 61 2,870 203 82 105 70 110 66 599 227 31 197 2,780 677 215 70 66 511 Total 2,026 3,174 25,740 17,249 27,332 4,932 6,385 2,241 3,425 2,140 7,954 3,251 Mean 65.4 106 830 556 976 159 213 72.3 114 69.0 257 108 Ac-fl 4,020 6,300 51,050 34,210 54,210 9,780 12,660 4,440 6,790 4,240 15,780 6,450

Adjusted for change In contents in Cottage Grove Reservoir Mean 50.6 90.1 893 635 952 305 340 108 171 46.5 18.5 15.0 Cfsm 0.487 0.866 8.59 6.11 9.15 2.93 3.27 1.04 16.4 0.447 0.178 0.144 In. 0.56 0.97 9.90 7.04 9.54 3.38 3.64 1.20 1.83 0.52 0.21 0.16 Ac-ft 3,110 5,360 54,920 39,040 52,900 18,740 20,210 6,650 10,170 2,860 1,140 890 Observed Calendar year 1957: Max 2,880 Mln 40 Mean 277 Ac -ft 200,500 Water year 1957-58: Max 2,880 Mln 40 Mean 290 Ac-ft 209,900 Adjusted Calendar year 1957: Mean 282 Cfsm 2.71 In. 36.85 Ac -ft 204,400 Water year 1957-58: Mean 298 Cfsm 2.87 In. 38.94 Ac-ft 216,000 * Discharge measurement made on this day,, Mote. Shifting-control method used June 11 to Aug. 21. 112 WILLAMETTE RIVER BASIN

1545. Row River above Pitcher Creek, near Dorena, Oreg.

Location. Lat 43°44'10", long 122°52'20", in NE£ sec. 24, T. 21 S., R. 2 W., on right bank half a mile upstream from Pitcher Creek and If miles northwest of Dorena. Drainage area. 211 sq mi. Records available. September 1935 to September 1958. Prior to October 1949, published as Row River at Star. Gage. Water-stage recorder. Datum of gage is 856.16 ft above mean sea level, datum of T929. Prior to Oct. 18, 1938, staff gage at site 450 ft upstream at datum 1.00 ft higher. Average discharge. 23 years, 606 cfs (438,700 acre-ft per year). Extremes. Maximum discharge during year, 11,400 cfs Feb. 16 (gage height, 11.10 ft); minimum, 15 cfs Sept. 8. 1935-58: Maximum discharge, 19,600 cfs Dec. 28, 1945 (gage height, 14.33 ft), from rating curve extended above 9,300 cfs; minimum, 10 cfs Sept. 24, 25, 1951. Remarks. Records excellent. Slight regulation at times by log ponds. No diversion above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30 1.8 5.0 1,080 15 4.0 520 2.0 6.0 1,880 33 5.0 1.08O 2.5 109 7.0 3,050 2.2 67 6.0 1,880 3.0 195 9.0 6,500 2.5 109 7.0 3,050 3.5 330 11.0 11,100 3.0 195 9.0 6,500 4.0 520 3.5 330 11.0 11,100

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 73 38 103 918 1,840 966 690 453"488 209 165 36 21 2 104 38 130 768 1,370 79? 600 297 223 37 21 3 381 36 118 640 1,070 680 535 392 826 TSS 3? 20 4 321 34 103 525 864 580 443 357 810 156 34 20 5 233 33 SI7 480 710 550 399 336 502 135 33 *20 6 273 33 263 516 610 493 384 315 506 122 33 19 7 265 32 1,260 530 STB"555 459 378 288 675 109 33 17 8 167 3T 828 493 435 364 291 954 102 33 15 9 138 32 475 I5B"431 650 459 360 294 1.090 94 33 2T 10 108 36 339 1,500 525 43T 285 *750 84 33 21 11 86 64 259 840 1,120 520 498 291 560 80 31 21 12 74 95 213 1,820 1,510 488 506 262 493 76 28 21 13 108 1,080 182 1,740 2,000 455 535 216 415 72 26 36 14 327 1.450 160 1,110 2,340 423 493 191 345 71 26 3B"55 15 202 834 146 1,200 6,330 395 415 193 291 72 23 16 130 419 165 1,060 8.600 364 423 211 254 67 22 27 17 94 282 327 1,870 4,040 360 764 216 216 65 23 24 18 78 512 864 1,660 2,310 *357 1,270 216 191 65 23 22 19 67 738 3,950 1,110 1,550 551 972 197 174 63 22 24 20 58 439 8.950 888 1,160 42T 1,190 182 169 60 21 26 21 55 306 6,960 840 906 585 2,200 172 150 55 21 26 22 49 230 2,800 685 768 550 2.610 167 138 55 21 29 23 45 202 *1,520 695 720 550 1,920 170 169 52 23 28 24 44 204 1,510 1,680 1,280 605 1,430 187 230 *51 23 27 25 45 178 1,980 1,440 3,090 590 1,070 163 228 48 21 26 26 52 160 3,040 1,060 2,240 620 870 143 182 47 18 25 27 48 138 2,460 852 1,600 545 705 140 184 46 T? 23 28 43 134 7,390 *1,990 1,230 475 *625 174 189 43 20 21 29 41 121 3,750 4.870 - 455 585 138 169 40 21 21 30 40 106 1,900 3,916 493 540 121 158 37 25 21 31 *3i 1,220 2,890 605 TJ? 36 22 Total 3,788 8,036 53,467 39,966 52,538 16,152 24,205 7,377 11,524 2,573 820 733 Mean 122 268 1,725 1,289 1,876 521 807 238 384 83.0 26.5 24.4 Cfsra 0.578 1.27 8.18 6.11 8.89 2.47 3.82 1.13 1.82 0.393 0.126 0.116 In. 0.67 1.42 9.42 7.04 9.26 2.85 4.27 1.30 2.03 0.45 0.14 0.13 Ac-ft 7,510 15,940 106,100 79,270 104,200 32,040 48,010 14,630 22,860 5,100 1,630 1,450 Calendar year 1957: Max 8,950 Mln 13 Mean 580 Cfsm 2.75 In. 37.31 Ac-ft 419,900 Water year 1957-58: Max 8,950 Mln 15 Mean 606 Cfsra 2.87 In. 38.98 Ac-ft 438,700 Peak discharge (base, 4,800 cfs). Dec. 20 (9 p.m.) 11,000 cfs (10.94 ft); Dec. 28 (8:30 a.m.) 9,020 cfs (10.17 ft); Jan. 29 (2 p.m.) 7,420 cfs (9.46 ft); Feb. 16 (12:30 a.m.) 11,400 cfs (11.10 ft).______* Discharge measurement made on this day. WILLAMETTE RIVER BASIN 113

1550. Dorena Reservoir near Cottage Grove, Oreg.

Location. Lat 43°47', long 122°57', in SEi sec. 32, T. 20 S. ( R. 2V., on left side of Dorena Dam on Row River, 5 miles east of Cottage Grove. Drainage area. 265 aq mi. Records available. October 1949 to September 1958. Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Corps of Engineers). Extremes. Maximum contents during year, 76,950 acre-ft June 9 (elevation, 834.70 ft); min- Imum, 635 acre-ft Sept. 23 (elevation, 749.00 ft), reservoir drawn far below minimum operating level to facilitate poisoning of trash fish. 1949-58: Maximum contents, 84,060 acre-ft Dec. 23, 1955 (elevation, 838.37 ft); min imum since first filling, that of Sept. 23, 1958. Remarks. Reservoir is formed by earth-fill dam with concrete outlet and spillway, com- pTeTTed in 1949 by Corps of Engineers; storage began Oct. 11, 1949. Capacity. 77,510 acre-ft between elevations 739.0 (sill of outlet gates) and 835.0 ft (crest of spillway). Dead storage, 8 acre-ft below elevation 739.0 ft. Reservoir used for flood control and improvement of navigation. Capacity table computed by Corps of Engineers. Figures given herein represent total contents. Capacity table, water year 1957-58 (elevation, In feet, and contents, In acre-feet)

743 635 770 6,730 810 39,320 750 750 780 12,390 820 52,310 755 1,550 790 19,450 830 68,320 760 2,800 800 28,400 840 87,300 765 4,510 Contents, In acre-feet, at 12 p.m., water year October 1957 to September 1958 Day Oct. Mov. Dee. Jan. Feb. Mar. Apr. Hay June July Aug. Sept. 1 9.310 9,560 8,100 55,630 26,580 23.950 45,180 67.650 75,680 50.070 7,630 2 9.40O 9,350 7,470 25,970 20,220 §4,520 43,586 S'S 1 200 68,118 75,930 48,630 7,380 3 10,170 9,130 7,210 18,140 15,730 25,130 43,870 62,740 69,780 76,060 46,020 7,110 4 10,740 8,910 7,140 11,060 10,560 25,750 44,180 63,170 71,480 76,140 44,020 6,850 5 11,070 8,690 7.080 8,480 9,960 26,430 44,650 63,590 72,390 76,190 42,060 6,590 6 11,470 8,450 7,360 7,960 10,560 27,080 45,200 63,940 73,540 76.190 40,130 6,340 7 11,850 8,250 9,910 7,460 10,860 27,940 45,720 64,210 75,050 76,120 58,220 6,100 8 12,030 8,100 11,450 7,050 11,540 28,730 46,230 64,480 76,800 76,060 56,270 5,850 9 12,140 7,930 11,900 6.980 12,290 29,610 46,750 64,770 76.SS6 76,020 54,350 5,600 10 12,180 7,790 11,290 7,1(56 13,580 30,340 47,430 65,010 75,700 75,910 52,580 5,370 11 12,170 7.720 10,490 7,420 15,890 30,780 48,240 65,280 75,650 75,820 50,460 5,140 12 12,180 7/730" 9,590 10,050 15,070 30,930 49,060 65,520 75,680 75,550 28,560 4,900 13 12,250 9,880 8,620 11,280 17,290 51,280 49,910 65,760 75,480 75,250 26,710 4,720 14 12,780 12,880 8,150 10,550 18,440 52,010 50,670 65,950 75,380 74,800 24,830 4,600 15 13,020 14,090 7,890 9,890 51,510 32,680 51,290 66,140 75,380 75,870 23,000 4,330 16 13,100 14,040 7,740 8,940 52,210 33 , 240 51,950 66,380 75,520 72,850 21,200 3,950 17 15.110 13,710 7,950 10,050 57.950 33,780 53,440 66,620 75,550 71,800 19,470 3,490 18 13,086 13,800 8,750 10,620 55,840 34,280 54,860 66,900 75,570 70,780 17,800 2,840 19 13,020 14,550 15,660 9,880 51,310 34,770 54,870 67,120 75,670 69,740 16,200 g2,000 20 12,940 14,320 36,480 8,690 44,640 35,410 55,490 67,300 75,820 68,720 14,640 gl,350 21 12,870 14,010 52,910 7,440 37,480 36,320 56,990 67,440 75,890 67,670 13,300 g832 22 12,760 13,550 55,160 7,080 30,170 37,220 57,300 67,490 75,930 66,620 12,170 K679 23 12,650 13,040 51,866 7,210 25,180 38,210 56,040 67 , 490 76,080 65,640 11,250 g714 24 12,550 12,510 46,140 8,870 22,470 39,260 54,830 67,600 76,060 64,450 10,500 g799 25 12,460 11,980 42,070 9,210 25,900 39,900 55,660 67,600 75,780 63,060 9,830 g852 26 12,380 11,380 40,540 8,610 25,220 40,440 56,740 67,530 75,550 61,540 9,260 g954 27 12,290 10,740 37,560 7,560 25,290 40,820 57,820 67,550 75,590 59,840 8,910 gl,060 28 11,970 10,120 52,100 9,100 25,740 41,030 58,910 67,610 75,650 57,920 8,640 gl,220 29 11,310 9,470 52,080 17,740 41,240 59,920 67,560 75,630 55,930 8,390 gl,340 30 10,650 8,780 47,040 25,940 41,690 60,810 67,440 75,590 55,970 8,150 gl,420 31 9,980 __ 40,680 29,850 42,470 67,490 52x020 7^890 (t) 776.00 773.90 811.14 801.44 795.07 812.60 825.56 829.53 855.98 819.80 772.26 754.3 (*) . +640 -1,200 +31,900 -10,850 -6,110 +18,730 +18,540 +6,680 +8,100 -23,570 -44,130 -6,470 Calendar year 1957...... * +33,420 Water year 1957-58...... * -7,920 t Elevation, in feet, at end of month. * Change in contents, In acre-feet. g Computed from once-daily staff-gage readings. 114 WILLAMETTE RIVER BASIN

1555. Row River near Cottage Grove, Oreg.

Location. Lat 43°47'40", long 122°59'40", in NE£ sec. 36, T. 20 S., R. 3 W., on right bank If miles upstream from Mosby Creek, 2 miles downstream from Dorena Dam, and 3 miles east of Cottage Grove. Drainage area. 270 sq mi. Records available. January 1939 to September 1958. Prior to October 1947, published as "near Dorena." . Water-stage recorder. Datum of gage is 685.24 ft above mean sea level, datum of 929 (levels by Corps of Engineers). Prior to Oct. 13, 1939, staff gage at site 180 ft upstream at datum 1.00 ft higher. Average discharge. 19 years, 774 cfs (560,400 acre-ft per year), adjusted for storage. Extremes. Maximum discharge during year, 5,030 cfs Feb. 1 (gage height, 8.44 ft); minimum daily, 0.2 cfs Sept. 25-30. 1939-58: Maximum discharge, 21,400 cfs Dec. 28, 1945 (gage height, 18.20 ft); min imum daily, that of Sept. 25-30. Remarks. Records good. Flow regulated since October 1949 by Dorena Reservoir (see pre- SeoTng page). No diversion above station. Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Backwater from debris Sept. 28, 29) Oct. 1 to Dee. 23 Dec. 24 to Sept. 3O 1.9 98 0.7 0.2 .3 7.2 2.5 310 2.0 125 .8 .4 .4 12 3.O 530 2.5 300 .9 .8 .5 21 4.0 1,080 3.0 520 1.0 1.5 .6 36 5.0 1,750 4.0 1,080 1.1 2.6 .8 80 7.0 3,450 6.0 2,650 1.2 4.5 2.0 135 9.0 5,800 8.0 4,750 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 98 255 448 4,780 3,940 1,140 449 218 207 176 1,040 141 2 10T 149 439 4,800 4,600 157 503 214 207 147 1,080 141 3 101 149 276 4,76(5 4,686 560 503 214 207 147 1,070 141 4 103 149 158 4,320 2,720 440 404 210 200 147 1,060 »141 5 103 149 T5S 1,860 1,190 390 263 210 196 147 1,040 141 6 101 149 158 864 577 320 224 210 204 147 1,030 141 7 101 131 161 858 35B-454 207 224 214 207 147 1,020 141 8 101 109 171 786 '2757 224 214 378 147 1,050 138 9 98 106 343 565 462 210 214 214 »1.420 147 1,040 135 10 98 To? 695 505 946 338 204 214 1,330 147 1,030 135 11 98 106 705 832 1,180 480 204 214 712 147 1,010 132 12 101 106 700 1,050 1,190 600 204 190 580 190 990 132 13 106 109 685 1,550 1,210 471 204 152 580 228 978 132 14 109 120 422 1,780 2,100 214 204 1ST 458 278 960 129 15 109 304 292 1,750 1,990 214 204 132 346 508 942 156 16 109 511 292 1,720 685 212 207 132 249 575 924 200 17 112 511 288 1,710 1,880 210 210 132 249 570 906 235 18 112 511 642 1,760 3,810 *210 796 132 218 570 882 '276"286 19 112 511 840 1,760 4,100 210 1,140 132 162 570 858 20 114 516 300 1,710 4,730 210 1,140 132 141 565 834 252 21 114 511 537 1,650 4,760 210 1,780 132 141 560 725 238 22 114 511 2,560 1,080 4,610 210 2,900 176 141 560 615 126 23 114 506 3,950 840 4,310 214 2,900 214 141 560 498 17 24 114 498 *4,620 1,260 2,010 214 2,280 214 310 *641 404 .4 25 114 493 4,480 1,600 1,800 401 897 210 400 730 359 _ii 26 114 484 4,410 1,600 3,130 494 530 207 334 792 306 .2 27 106 480 4,680 1,550 3,070 494 340 207 246 870 196 .2 28 220 470 1,610 *1,560 1,380 494 *228 207 221 966 150 .2 29 *37B~390 466 4,500 1,320 498 221 207 221 1,010 150 .2 30 457 4.840 645 395 218 207 221 1,010 147 .2 31 376 4,800 1,480 338 207 144 Total 4,239 9,633 49,160 54,303 68,172 11,562 20,019 5,780 10,627 14,394 23,438 3,701.6 Mean 137 321 1,586 1,752 2,435 373 667 186 354 464 756 123 Ac-ftj 8,410 19, 110 97,510 107,700 135,200 22,930 39,710 11,460 21,080 28,550 46,490 7,340

Adjusted for change In contents In Dorena Reservoir Mean 147 301 2,104 1,575 2,325 678 976 295 490 81.0 38.4 14.6 Cfsm 0.544 1.11 7.79 5.83 8.61 2.51 3.61 1.09 1.81 0.300 0.142 0.054 In. 0.63 1.24 8.99 6.73 8.97 2.89 4.03 1.26 2.03 0.35 0.16 0.06 Ac-ft 9,050 17,910 129,400 96,870 129, 100 41,660 58,050 18,140 29,180 4,980 2,360 870

Calendar year 1957 : Max 5,050 Mln 96 Mean 673 Ac -ft 487, 000 Water year 1957-58: Max 4,840 Mln 0 .2 Mean 754 Ac-ft 545, 500 Adjusted Calendar year 1957 : Mean 719 Cfsm 2 .66 In. 36.14 Ac-ft 520, 400 Water year 1957-58 : Mean 743 Cfsm 2 .75 In. 37.33 Ac-ft 537, 600 * Discharge measurement made on this day. WILLAMETTE RIVER BASIN 115

1565. Mosby Creek at mouth, near Cottage Grove, Oreg.

Location. Lat 43°46'40", long 123°00'10", In sec. 1, T. 21 S., R. 3 W., on left bank two-thirds of a mile upstream from mouth and 3j miles southeast of Cottage Grove. Drainage area. 96 sq mi, approximately. Records available. September 1946 to September 1958. Monthly discharge only September 1946, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 676.62 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Average discharge. 12 years, 264 cfs (191,100 acre-ft per year). Extremes. Maximum discharge during year, 5,570 cfs Dec. 20 (gage height, 9.16 ft); mini mum, 4.8 cfs Sept. 7, 8. 1946-58: Maximum discharge, 7,160 cfs Oct. 28, 1950 (gage height, 10.82 ft), from rating curve extended above 4,100 cfs by logarithmic plotting; minimum, 4 cfs Sept. 13-15, 1951. Remarks. Records excellent. Small diversions for irrigation above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30 1.1 2.0 185 1.0 5.2 2.0 182 1.2 2.5 400 1.1 2.5 385 1.3 3.0 670 1.2 3.0 660 1.5 5.0 2,060 1.4 5.0 2,060 1.7 8.0 4,530 1.6 75 8.0 4,530 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 45 17 33 400 862 435 290 T19"132 98 50 14 7.9 2 39 16 45 324 610 330 257 155 67 14 7.4 3 165 16 39 265 461 274 234 103 346 53 14 *6.9 4 12? 15 36 217 360 231 196 96 367 47 13 6.9 5 96 16 34 189 301 213 170 89 223 41 13 6.9 6 132 16 80 178 257 196 161 82 202 35 13 6.0 7 129 15 430 175 221 182 161 75 261 35 13 6.0 8 78 15 296 165 213 185 149 71 353 34 13 5.6 9 53 15 175 149 Tfo 234 146 67 *385265" 33 12 6.4 10 39 18 126 165 632 269 146 65 31 12 9.1 11 30 47 99 430 483 253 144 67 192 29 12 9.7 12 27 53 80 962 654 231 141 67 161 27 10 9.1 13 42 441 69 982 772 209 138 55 132 27 10 12 14 123 626 61 598 910 185 132 52 114 26 9.7 19 15 87 396 51 510 2,600 170 116 49 96 25 9.1 13 16 57 197 67 425 5.760 155 124 47 84 24 9.1 9.7 17 42 123 210 648 1,560 141 240 45 71 23 8.5 9.1 18 33 135 620 620 898 *132 435 44 67 23 7.9 8.5 19 28 159 1,920 461 606 130 334 42 59 24 7.9 8.5 20 24 120 4.080 378 446 T5F 380 41 55 23 7.9 8.5 21 23 94 3,620 391 339 152 545 39 52 22 7.4 9.7 22 20 75 1,500 342 286 144 762 37 47 21 774 10 23 19 63 *838 324 257 158 750 42 50 20 7.4 9.7 24 20 53 766 700 498 176 578 50 65 *18 7.4 9.7 25 20 48 838 682 1,420 192 430 50 59 18 7.9 10 26 20 45 1,280 510 1,250 209 326 42 50 17 7.9 9.7 27 20 39 1,100 400 840 199 257 42 52 17 7.4 8.5 28 18 39 2,820 *874 589 176 *206 93 52 16 7.9 7.4 29 1Z 36 1,470 2.000 - 170 176 61 49 14 9.1 7.4 30 *17 32 1,880 192 149 50 49 14 9 1 7.4 31 17 544 1,470 OCET£00 59 14 8.5 Total 1,606 2,980 24,129 17,814 22,355 6,323 8,273 1,973 4,211 868 310.5 265.7 Mean 51.8 99.3 778 575 798 204 276 63.6 140 28.0 10.0 8.86 Cfsm 0.540 1.03 8.10 5.99 8.31 2.12 2.87 0.662 1.46 0.292' 0.104 0.092 In. 0.62 1.15 9.35 6.90 8.66 2.45 3.20 0.76 1.63 0.34 0.12 0.10 Ac-ft 3,190 5,910 47,860 35,330 44,340 12,540 16,410 3,910 8,350 1,720 616 527 Calendar year 1957: Max 4,080 Min 5.0 Mean 238 Cfsm 2.48 In. 33.67 Ac-ft 172,400 Water year 1957-58: Max 4,080 Mln 5.6 Mean 250 Cfsm 2.60 In. 35.28 Ac-ft 180,700 Peak discharge (base. 2,500 cfs). Dec. 20 (11:30 p.m.) 5,570 cfs (9.16 ft); Dec. 28 (7:(7:30 a.m.) 3,490 cfs (6.79 ft); Jan. 29 (3 p.m.) 3,000 cfs (6.18 ft); Feb. 16 (12:30 a.m.) 5,270 cfs (8.82 ft). ______* Discharge measurement made on this day 116 WILLAMETTE RIVER BASIN

1575. Coast Fork Willamette River near Goshen, Oreg.

Legation."Lat 43°58'40", long 122°58'00", in NWi sec. 29, T. 18 S., R. 2 W., on right Bank at downstream side of highway bridge, 3.5 miles east of Goshen and 6j miles upstream from confluence with Middle Fork Willamette River. Drainage area. 642 sq mi. Records available. August 1905 to February 1912, October 1950 to September 1958. Monthly discharge only for some periods, published in WSP 1318. . Hater-stage recorder. Datum of gage is 473.80 ft above Bean sea level, datum of J929, supplementary adjustment of 1947. Prior to Feb. 7, 1912, staff gage at site 600 ft upstream at different datum. Average discharge. 14 years (1905-11, 1905-58), 1,811 cfs (1,311,000 acre-ft per year). Extreme?. Maximum discharge during year, 20,000 efs Feb. 16 (gage height, 14.68 ft); minimum, 167 efs Oct. 1. 1905-12, 1950-58: Maximum discharge, 58,500 cfs Nov. 22, 1909 (gage height, 19.5 ft, site and datum then in use, from graph based on gage readings), from rating curve extended above 15,000 cfs by logarithmic plotting; minimum, 36 cfs Sept. 29, 30, Oct. 11, 12, 1908. Remarks. Records excellent except those for periods of backwater from moss, which are good. Flow regulated by Cottage Grove Reservoir (see p. 110) and Dorena Reservoir (see p. 113). Only small diversions for irrigation above station. Revisions (water years).--^WSP 1218: Drainage area. WSP 1248: 1905-12.

Rating tables, water year 1957-58, except periods of backwater from moss (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Apr. 23) Oct. 1 to Apr. 23 Apr. 24 to Sept. 30 1.9 155 6.0 3,200 2.1 210 4.0 1,250 2.5 380 8.0 5,580 2.5 355 6.0 3,120 3.0 620 10.0 8,850 3.0 600 8.0 5,760 4.0 1,300 13.0 15,400 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. ~ Feb. Mar. Apr. May June July Aug. Sept. 1 2^6"179 540 555 8.440 7,650 5.070 1,220 53o~ 418 359 998 248"480 2 296 550 6,506 1 9,290 2,SfiO 1,310 495 323 1.070 3 272 284 485 6,170 7,990 1,800 1,280 500 660 315 1,060 234 4 304 280 312 5,440 4,930 1,480 1,100 475 *870 301 1,050 224 5 252 280 300 3,500 2,640 1,240 796 460 654 280 1,040 220 6 256 276 304 1,750 1,800 1,190 686 450 606 273 1,030 214 7 276 272 585 1,570 1,510 978 716 436 798 259 1,020 214 8 240 240 610 1,520 i.Sifl 1,100 680 431 810 259 1,020 210 9 220 216 490 1,290 1,580 1,270 638 422 1,930 262 1,030 2TI 10 202 ff51 1,080 1.220 2,750 1,260 620 400 2.220 259 1,020 210 11 196 232 1,170 2,090 3,060 1,480 585 400 1,440 ?66~256 991 210 12 188 252 1,150 4,270 3,550 1,500 570 408 1,070 1 977 21,4 13 202 458 *866 5,320 3,800 1,410 560 343 1,010 308 963 224 14 252 873 710 4,420 4,440 915 550 319 840 312 942 228 as 256 880 455 3,670 8,920 775 530 308 684 450 914 228 16 224 1.010 460 3,340 14.000 710 570 304 485 *600 894 270 17 206 887 725 4,090 6,236 668 796 298 436 606 882 270 18 202 887 1,940 4,060 8,890 656 1,530 294 404 606 870 323 19 196 929 4,860 3,510 8,300 605 1,960 290 355 606 852 331 £0 188 880 10,800 3,230 9,060 590 1,990 284 315 606 928 319 21 188 845 12.900 3,200 8,350 605 2,700 304 606 900 308 22 196 803 8,590 2,590 6,050 600 4,530 ff§ 298 594 876 298 23 196 782 8,460 *2,170 5,490 674 5.3gQ 343 3~57290 588 858 304 24 196 747 9,360 3,040 4,500 768 57270 371 606 822 270 25 196 740 9,120 3,820 6,170 824 2,450 371 570 720 858 262 26 206 704 9,380 3,560 8,210 1,130 1,510 355 535 792 956 256 27 202 615 10, 400 3,290 7,800 1,060 1,220 355 450 846 *970 252 28 *192 610 9,040 3,950 4,120 992 816 395 408 914 935 245 29 539 590 10,200 6,900 - 985 720 375 395 998 942 242 30 580 9,980 7,230 1,070 654 351 391 f5f 804 242 31 fro 9,190 6,080 992 367 991 600 Total 7,778 17,208 135,027 121,230 162,620 34,757 43,877 11,799 20,508 16,159 29,072 7,764 Mean 251 574 4,356 3,911 5,808 1,121 1,463 381 684 521 938 259 Cfsm ------In. _ - - - - - Ac-ft 15,430 34,130 267,800 240,500 322,600 68, 940 87 , 030 23, 400 40,680 32,050 57,660 15,400 Calendar year 1957: Max 12,900 Min 149 Mean 1,530 Cfsm 2.38 In. 32.36 Ao-ft 1,108,000 Water year 1957-58: Max 14,000 Min 179 Mean 1,665* Cfsn 2.59 In. 25.21 Ac-ft 1,206,000 * Discharge measurement made on this day. Note. Backwater from moss Oct. 1-29, Sept. 21-30. WILLAMETTE RIVER BASIN 117

1585. McKenzie River at outlet of Clear Lake, Oreg.

Location. La t 44°21 l 40 n , long 121°59'40", in SE£ sec. 8, T. 14 S., R. 7 E., on west bank of Clear Lake in narrow channel, 150 ft upstream from outlet and at mile 85.9 (river-, profile survey). Drainage area. 101 sq mi. Records available. June 1912 to September 1915, October 1947 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 3,015.32 ft above mean sea level (levels ~by Eugene Water and Electric Board). June 20, 1912, to July 31, 1915, float gage at site 1 mile north at different datum. Average discharge. 14 years, 500 cfs (362,000 acre-ft per year). Extremes. Maximum discharge during year, 1,420 cfs Feb. 16 (gage height, 4.83 ft); mini mum, 203 cfs Nov. 10. 1912-15, 1947-58: Maximum discharge, 2,970 cfs Dec. 22, 1955 (gage height, 7.66 ft), from rating curve extended above 1,500 cfs by logarithimc plotting; minimum daily, 160 cfs Sspt. 29, 30, 1915. Remarks. Records excellent except those for period of backwater from debris, which are good. Flow regulated by natural storage in lake. At high stages an undetermined flow enters numerous sinkholes in lava rock along south edge of lake above station. Revisions (water years). WSP 1124: Drainage area. WSP 1288; 1949. WSP 1318: 1915(m). Rating table, water year 1957-58, except period of backwater from debris (gage height, in feet, and discharge, In cubic feet per second) 1.3 190 2.0 326 3.0 630 5.0 1,500 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 230 214 278 722 762 922 420 fill 518 343 295 2 232 213 276 686 742 886 12? 842 511 m 340 291 3 232 211 27O 642 718 850 422 822 508 425 338 289 4 232 209 266 6O6 698 810 422 802 497 425 333 289 5 232 209 264 567 678 782 420 790 490 422 328 287 6 234 208 276 536 654 738 420 778 518 422 326 282 7 236 *206 309 508 634 690 420 75O 532 420 324 282 8 237 204 316 487 623 650 420 746 356"542 420 321 280 9 236 204 352 471 626 609 4 2O 766 417 319 278 1O 236 204 *382 452 *646 574 425 766 532 414 316 276 11 236 2O6 395 449 646 546 422 774 525 414 314 276 12 a240 213 420 47T 690 525 428 738 518 411 312 274 13 228 434 464 746 504 443 698 514 408 312 274 14 a240 243 449 468 750 490 474 674 508 *406 309 270 15 a240 264 461 500 822 480 514 662 497 403 309 268 16 a230 282 471 518 1.310 468 542 678 487 400 307 264 17 a230 293 477 609 1,260 458 616 686 480 400 309 264 18 a230 302 484 686 1,180 446 750 678 474 395 309 262 19 a230 500 678 1,120 437 802 670 471 392 309 260 20 a230 TOT 793 650 1,070 428 1,050 658 464 390 309 258 21 a230 304 1.150 626 1,O40 428 1.540 642 458 387 307 258 22 a230 3O4 902 612 1,020 422 1,210 638 452 384 309 254 23 225 302 762 6 2O 1,040 422 1,100 *646 449 379 307 252 24 221 30O 710 666 1.1OO 422 1,060 634 449 374 304 252 25 221 298 738 662 1,25O 422 1,040 612 446 372 302 249 26 220 295 822 642 1,150 1,010 588 443 369 300 247 27 220 291 834 620 1.O40 4T§ 972 581 440 367 298 243 28 *218 291 858 682 972 420 934 567 437 362 295 243 29 218 284 862 818 420 906 546 437 36O 295 241 30 216 282 814 420 878 532 121 352 293 *259 31 762 m 420 525 548 291 Total 7,118 7,672 17,087 18,878 25,007 16,929 20,702 21,343 14,567 12,297 9,688 7,995 Mean 230 256 551 609 893 546 690 688 486 397 313 266 Cfsm 2.28 2.53 5.46 6.03 8.84 5.41 6.83 6.81 4.81 3.93 3.10 2.63 In. 2.62 2.82 6.29 6.95 9.21 6.23 7.62 7.86 5.36 4.53 3.57 2.94 Ac-ft 14,120 15,220 33,890 37,440 49,600 33,580 41,060 42,330 28,890 24,390 19,220 15,860 Calendar year 1957: Max 1,340 Min 204 Mean 441 Cfsm 4. 37 In. 59.23 Ac-ft 319,000 Water year 1957-58: Max 1,340 Min 204 Mean 491 Cfsm 4.86 In. 66.00 Ac-ft 355,600 Peak discharge (base, 750 cfs). Dec. 21 (5 a.m.) 1.220 cfs (4.40 ft); Jan. 3O (6:3O a.m.) 926 cfs (3.74 ft); Feb. 16 (2:30 p.m.) 1,420 cfs (4.83 ft); Apr. 21 (6:3O to 8:30 a.m.) 1,380 cfs (4.75 ft).______* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of recorded range In stage and records for station at McKenzie Bridge. Note. Backwater from debris Sept. 12-30. 118 WILLAMETTE RIVER BASIN

1487. McKenzie River near Belknap Springs, Oreg.

Location. Lat 44°20'15", long 1220 00'20", in SW£ sec. 20, T. 14 S., R. 7 E., on left bank at outlet of Beaver Marsh, about 2 miles upstream from Lower Falls, 10 miles north of Belknap Springs, and at mile 84.0. Drainage area. 143 sq mi. Records available. October 1957 to September 1958. Gage.--Water-stage recorder. Datum of gage is 2,602.36 ft above mean sea level (levels by Eugene Water and Electric Board). Extremes.--Maximum discharge during year, 1,620 cfs Feb. 16 (gage height, 3.34 ft), from rating curve extended above 820 cfs; minimum daily, 360 cfs Nov. 5, 6, 8-11. Remarks.--Records excellent except those for periods of no gage-height record and those above 1,000 cfs, which are good. Mo regulation or diversion above station.

Rating table, water year 1957-58 (gage height, In feet, and'discharge, In cubic feet per second) (Backwater from debris Apr. 20, 21) 0.6 345 1.0 500 3.2 1,550 Discharge, In cubic feet per second, water year October 19$7 to September 1958 Day Oct. Nov. Dee. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 400 380 440 885 965 1.160 592 1.020 669 600 504 2 455 380 456 840 915 1,120 596 1,000 664 59T 5oo m 3 400 380 432 800 890 1,060 592 980 660 592 496 428 4 400 380 428 760 870 1,020 see 955 652 592 492 428 5 400 560 4"2TT 718 845 980 588 955 652 588 488 428 6 400 560 448 687 820 930 588 925 669 588 484 424 7 400 *370 480 656 975 880 588 900 687 588 484 424 8 400 360 484 644 790"785 830 588 900 700 588 480 424 9 400 360 *516 628 785 588 915 69T 588 476 424 10 400 560 548 £13- 810 746 592 915 682 584 482 420 11 *400 560 568 612 *810 714 592 920 678 580 472 420 12 400 580 588 652 860 692 596 890 674 580 468 420 13 400 400 600 628 915 669 612 845 669 576 468 424 14 400 420 616 628 920 656 648 820 664 *572 *464 420 15 400 440 628 652 1,000 648 682 810 656 568 464 416 16 400 460 640 669 1,500 644 *705 820 652 564 460 412 17 400 480 644 765 1.520 632 785 825 644 564 456 412 18 400 IM 652 845 1,440 620 955 820 640 560 456 412 19 400 480 674 855 1,580 608 992 820 640 556 452 408 20 400 *476 958 805 1,310 604 1,240 800 656 556 452 408 21 400 476 1.550 780 1,280 600 1.510 790 628 552 448 408 22 400 476 1, 110 765 1,260 596 1^400 785 620 548 448 408 23 400 476 950 770 1,280 596 1,500 *790 620 544 448 404 24 380 472 875 825 1,340 596 1,260 780 620 540 448 400 25 380 468 905 820 1,500 596 1,220 760 616 536 444 400 26 380 460 1,010 800 1,420 592-592 1,190 736 612 532 440 400 27 380 452 1,020 785 1,300 1,160 728 608 528 440 400 28 380 452 1,050 850 1,230 592 1,110 718 608 524 440 400 29 380 448 1,050 1,000 - 592 1,070 696 604 520 440 598 30 580 444 985 1.120 592 1,040 682 600 516 436 »3jre 31 380 950 1,040 592 678 508 152 Total 12,240 12,690 22,425 23,856 30,740 22,534 25,947 25,958 19,416 17,428 14,352 12,424 Mean 395 425 725 770 1,098 727 865 837 647 562 463 414 Of am 2.76 2.96 5.06 5.58 7.68 5.08 6.05 5.85 4.52 5.95 5.24 2.90 In. 3.18 5.50 5.85 6.20 7.99 5.86 6.75 6.75 5.05 4.53 5.75 5.25 Ac-ft 24, 280 25,170 44,480 47,320 60,970 44,700 51,470 51,490 38,510 34,570 28,470 24,640 Calendar year 1957: Max - Mln - Mean - Cfsm - In. - Ac-ft - Water year 1957-58: Max 1,520 Mln 360 Mean 658 Cfam 4^60 In. 62.40 Ac-ft 476,100 iak discharge (base. 1,100 cfs). Dec. 21 (6:50 a.m.) 1,410 cfs (2.92 ft): Jan. 50 (2 p.m.) 1,150 cfs (2.36 ft); Feb. 16 (5 to 9 p.m.) 1,620 cfs (3.54 ft); Apr. 21 (9 a.m.) 1,550 cfs (5.16 ft),______* Discharge measurement made on this day. Note. No gage-height record Oct. 1-10, Oct. 12 to Nov. 6, Nov. 8-19; discharge estimated on basis of records for stations at outlet of Clear Lake and at McKenzie Bridge. WILLAMETTE RIVER BASIN 119

1588. Smith River near Belknap Springs, 6reg.

Location. Lat 44°16'35", long 122°02'55", T. 15 S., R. 6 E. (unsurveyed), on right bank 1,000 ft upstream from mouth and 6 miles north of Belknap Springs. Drainage area. 23.7 sq mi. Records available. October 1957 to September 1958. Gage. Water-stage recorder. Datum of gage is 2,040.42 ft above mean sea level (levels oy Eugene Water and Electric Board). Extremes. Maximum discharge during year, 3,120 cfs Dec. 20 (gage height, 5.12 ft), from curve extended above 930 cfs by logarithmic plotting; minimum daily, 12 cfs Nov. Remarks. Records good except those for periods of no gage-height record, which are fair. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30

0.5 12 2.0 205 0.5 12 2.0 225 .7 18 2.5 380 .7 21 2.5 410 .9 30 3.0 630 .9 34 3.0 670 1.0 37 3.5 1,000 1.2 63 3.5 1,030 1.2 56 4.5 2,090 1.6 125 4.0 1,510 1.5 98 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 15 14 Bo-36 160 280 188 94 165 82 43 22 17 Z 2? 13 138 220 165 94 178 79 45 21 17 3 24 12 so 122 180 141 90 188 76 4T 21 16 4 26 T? 44 109 160 129 82 190 72 40 21 16 5 22 12 40 98 154 118 78 201 77 38 21 16 6 20 12 340 95 165-149 107 75 201 114 36 21 16 *12 188 lOl 35 21 16 7 32 756 J£ 101 72 8 28 12 364 W 188 94 *JS 216 101 34 21 16 9 24 12 *235 96 238 86 85 237 91 *32 20 16 10 20 14 180 *116 286 80 120 246 ** 32 20 16 11 *17 36 147 185 262 76 131 231 79 31 20 16 12 17 110 122 385 388 73 141 178 79 30 20 16 13 40 320 102 293 384 70 170 145 72 30 19 525 102 253 312 67 178 137 67 29 19 14 3S *19 15 34 140 90 430 614 64 170 148 S3 28 19 16 28 100 92 376 1.160 62 210 178 60 28 18 18 17 24 75 103 576 777 62 511 188 55 27 18 17 18 22 85 105 425 652 61 485 190 53 27 18 16 19 20 100 325 300 485 60 525 180 50 26 18 18 20 18 80 1.870 223 392 64 982 168 48 26 17 17 21 17 65 890 182 322 78 848 162 45 25 17 IS 22 17 60 440 149 311 82 550 162 43 25 17 17 23 17 55 286 178 365 88 388 158 44 25 17 17 24 17 50 253 268 493 104 294 148 58 24 17 16 25 18 48 364 253 540 105 237 125 55 24 17 16 26 18 46 435 217 *374 104 198 *116 49 24 17 16 27 17 42 332 200 276 99 170 107 49 24 16"16 16 28 16 38 384 465 222 99 152 101 47 24 16 - 29 15 36 332 *703B"S5 99 145 88 45 23 18 16 30 15 34 244 96 150 46 22 18 15 31 15 188 400 94 W 17 Total 675 1,865 9,311 8,116 10,349 2,911 7,501 5,090 1,992 923 582 511 Mean 21.8 62.2 300 262 370 93.9 250 164 66.4 29.8 18.8 17.0 Cfsm 0.920 2.62 12.7 11.1 15.6 3.96 10.5 6.92 2.80 1.26 0.793 0.717 In. 1.06 2.93 14.61 12.74 16.24 4.57 11.77 7.99 3.13 1.45 0.91 0.80 Ac-ft 1,340 3,700 18,470 16,100 20,530 5,770 14,880 10,100 3,950 1,830 1,150 1,010 Calendar year 1957: Max - Mln - Mean - Cfsm - In. - Ac-ft - Water year 1957-58= "ax 1,870 Mln 12 Mean 137 Cfsm 5.78 In. 78.20 Ac-ft 98,830 Peak discharge-fbase, 800 cfs). Dec. 7 (1:30 a.m.) 960 cfs (3.45 ft); Dec. 20 (3 p.m.) 3,120 cfs (5.12 ft)j Jan. 29 (11:30 a.m.) 936 cfs (3.42 ft)j Feb. 16 (3 a.m.) 1,490 cfs (3.98 ft); Apr. 20 (7 p.m.) 1,340 cfs (3.84 ft). * Discharge measurement made on this day. Note. Ho gage-height record Oct. 1-10, Oct. 12 to Nov. 6, Nov. 8 to Dec. 6, Jan. 31 to Feb. 3; discharge estimated on basis of records for Blue River near Blue River. 120 WILLAMETTE RIVER BASIN

1590. McKenzie River at McKenzie Bridge, Oreg.

Location (revised) .--Lat 44°10'45", long 122°07 I 45", on line between NE^ and NW^ sec. 18, T. 16 S. , R. 6 E. , on left bank 1.7 miles east of village of McKenzie Bridge and 22 miles upstream from Horse Creek. Drainage area . 345 sq mi at measuring section three-quarters of a mile upstream from gage. Records available . August 1910 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Published as "near McKenzie Bridge" August 1910 to September 1911 and October 1914 to September 1916. ge. Water-stage recorder. Datum of gage is 1,419.04 ft above mean sea level, datum of "T929,929, supplementary adjusadjustment _.. .._ of.. __...1947. .._Prior to_. June__ 12, 1932, staff gage at several sites within 2 miles of present site at various datums. Average discharge. 48 years, 1,656 cfs (1,199,000 acre-ft per year). Extremes. Maximum discharge during year, 8,630 cfs Dec. 20 (gage height, 5.87 ft); mini mum, 1,080 cfs Nov. 5-10. 1910-58: Maximum discharge, 16,500 cfs Jan. 6, 1923 (gage height, 8.3 ft from floodmarks, site and datum then in use), from rating curve extended above 6,300 cfs; minimum, 805 cfs Oct. 20, 1931. Remarks . --Records excellent. No regulation or diversion above station. Revisions (water years) .--WSP 814: Drainage area. WSP 1248: 1911-16, 1920-25. WSP 1448: 1919.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 20 Dec. 21 to Sept. 30 1.1 1,040 1.2 1,090 Z.O 1,930 2.0 1,930 4.0 4,840 3.0 3,340 6.0 8,900 5.0 6,800 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,160 1,090 1,240 3, 440 2,880 2,640 1,610 2,220 1,590 1.530 1.510 1.170 2 1,180 1,090 1,260 2,280 2,680 2.SOO 1,600 g.SlO 1,590 1,530 1,316 1,160 3 1.19Q 1,090 1,240 3, 130 a, 510 2,390 1,580 2,180 1,580 1,530 1,300 1,160 4 1,196 1,090 1,330 2,010 2,370 2,290 1,570 a, 130 1,570 1,520 1,500 1,160 5 1,180 l.OBO 1.220 1,930 2,290 2,230 1,550 2,130 1,580 1,510 1,290 1,160 6 1,180 1,080 1,670 1,860 2,220 2,150 1,540 2,110 1,720 1,500 1,280 1,160 7 1,180 1,060 3,390 1,800 2,180 2,070 1,550 2,060 1,720 *1,490 1,270 1,150 a 1,180 1,080 2,350 1,780 2^180 2,010 *1,530 a, 090 1.750 1,470 1,260 1,140 9 1,180 1,080 1,950 *1.770 2,290 1,950 1,530 2,120 1^730 1,470 1,260 1,140 10 1,170 1,080 1,780 1,770 2,510 1,880 1,610 2,130 1,720 1,460 1,250 1,140 11 *1,170 1,120 1,680 2,010 2,440 1,850 1,620 2,120 1,710 1,450 1,240 1,140 12 1,170 1,280 1,610 2,570 2,780 1,800 1,630 2,010 1,710 1,440 1,240 1,140 13 1,180 1.B90 1,560 2,410 2,890 1,770 1,680 1,920 1,700 1,430 1,240 1,170 14 1,190 1,570 1,560 a, 310 2,820 1,730 1,720 1,870 1,680 1,420 1,250 1,150 15 1,180 1,390 1,540 2,760 3,750 1,710 1,730 1,880 1,670 1,410 *1,250 1,140 16 1,180 1,330 1,550 2,650 5,940 1,680 1,860 1,920 1,640 1,410 1,230 1,130 17 1,170 1,290 1,570 3,230 4,850 1,670 2,500 1,940 1,630 1,400 1,220 1,130 18 1,160 1,340 1,620 3,000 4,290 1,640 a, 640 1,950 1,620 1,390 1,220 1,120 19 1,160 1,390 2,480 2,710 3,700 1.620 2,720 1,920 1,610 1,390 1,210 1,120 20 1,150 *1,340 7,180 2,460 3,350 1,620 3,860 1,880 1,600 1,380 1,210 1,120 21 1,150 1,310 5,460 2,290 3,130 1,640 4.020 1,860 1,580 1,370 1,210 1,120 22 1,150 1,280 3,800 2,150 3,000 1,640 3,440 1,850 1,570 1,370 1,210 1,120 23 1,150 1,270 3,100 2,170 3,020 1,660 3,090 1,850 1,570 1,370 1,200 1,120 24 1,140 1,260 2,930 2,400 3,180 1,680 2,860 1,830 1,600 1,360 1,190 1,110 25 1,140 1,260 3,210 2,400 3,460 1,690 2,690 1,770 1,590 1,360 1,190 1,110 26 1,130 1,260 3,520 2,310 *3,200 1,670 2,570 *1,720 1,560 1,350 1,190 1,110 27 1,130 1,250 3,200 2,240 2,930 1,640 2,440 1,680 1,560 1,340 1,180 1,110 28 1,110 1,250 3,690 2,780 2,780 1,640 2,340 1,670 1,550 1,340 1,170 1,100 29 1,110 1,220 3,440 3,720 1,630 2,280 1,620 1.540 1,340 1,190 1,100 30 1.100 1,220 2,970 3,580 1,620 2,240 1,590 l,5iO 1,330 1,170 1,090 31 1,100 2,650 3,180 1,620 1,616 1.320 1,170 Total 35,910 37,360 77,650 75,100 85,660 57,330 65,580 59,840 48,760 43,980 38,170 53,990 Mean 1,158 1,245 2,505 2,423 3,059 1,849 2,186 1,930 1,625 1,419 1,251 1,133 Cfsm 3.36 3.61 7.26 7.02 8.87 5.36 6.34 5.59 4.71 4.11 3.57 3.28 In. 3.87 4.03 8.37 8.10 9.23 6.18 7.07 6.45 5.26 4.74 4.11 3.66 Ac-ft 71,230 74,100 154,000 149,000 169,900 113 , 700 130,100 118,700 96,710 87,230 75,710 67,420 Calendar year 1957: Max 7,180 Mln 1,080 Mean 1,739 Cfsm 5,04 In. 68.42 Ac-ft 1,259,000 Water year 1957-58: Max 7,180 Mln 1,080 Mean 1,806 Cfsm 5.23 In. 71.07 Ac-ft 1,308,000 Peak discharge (base. 3,000 cfs).--Dec. 7 (3:30 a.m.) 3,890 cfs (3.44 ft); Dec. 20 (5:30 p.m.) 8,630 cfs (5.87 ft); Dec. 28 (6 p.m.) 3,860 cfs (3.42 ft); Jan. 17 (10 a.m.) 3,410 cfs (5.12 ft); Jan. 29 (2 p.m.) 4,300 cfs (3.69 ft); Feb. 16 (5 a.m.) 6,520 cfs (4.86 ft); Apr. 20 (8 p.m.) 4,750 cfs (3.95 ft). Discharge measurement made on this day. WILLAMETTE RIVER BASIN 121

1592. South Pork McKenzie River above Cougar Reservoir, near Rainbow, dreg.

Location. Lat 44°02'50", long 122 013'00", in T. 17 S., R. 5 E. (unsurveyed) , on right bank 100 ft upstream from Tipsoo Creek, 8 miles south of Rainbow, and 9 miles southeast of town of Blue River. Records include flow of Tipsoo Creek. Drainage area. 167 sq mi, includes that of Tipsoo Creek. Records available. October 1957 to September 1958. Gage.--Water-stage recorder. Datum of gage is 1,709.51 ft above mean sea level (Corps of Engineers bench mark). Extremes. Maximum discharge during year, 6,760 cfs Feb. 16 (gage height, 10.80 ft); minimum, 210 cfs Nov. 7-10 (gage height, 3.19 ft). Flood of Dec. 11, 1956, reached a stage of about 15 ft, from floodmarks. Remarks. Records excellent except those for periods of no gage-height record, which are good. No regulation or diversion above station.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second)

3.1 194 4.5 530 7.0 1,880 3.5 270 5.0 730 8.0 2,800 4.0 385 6.0 1,210 10.1 5,640 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. *225 1 217 304 a950 1,300 B55"925 494 840 686 390 266 252 2 a28O 217 325 a850 1,150 491 860 682 398 264 232 3 a320 217 306 a750 1,040 794 473 875 682 382 262 230 4 a300 216 298 a700 955 738 461 885 646 365 260 230 5 a280 216 292 a650 885 718 446 930 614 352 260 228 6 a260 214 775 a650 820 674 449 910 875 350 258 228 7 a280 212 1,910 a650 815 642 *446 880 875 360 258 226 8 264 210 1,150 *658 33? 610 449"443 940 925 340 256 228 9 a260 210 a800 646 835 578 1,040 505 *330 254 256 10 a250 217 a650 678 935 554 550 1,090 810 318 252 230 11 a240 228 a550 798 920 530 590 1,110 754 312 *250 228 12 a240 296 a460 1,260 1,160 515 622 965 710 308 248 232 13 a280 776 a440 1,210 1,280 506 698 845 654 304 246 298 14 a320 634 a420 1,130 1,260 491 714 794 594 300 244 258 15 a260 464 a400 1,590 2,650 476 702 825 542 296 244 248 16 244 382 a400 al,500 5,640 467 815 900 509 294 244 240 17 a240 342 a400 al,800 3,190 464 1,240 975 479 292 242 234 18 a230 413 a440 al,600 2,360 455"458 1,410 1,020 461 290 242 230 19 a220 488 al,500 al,400 1,860 1,480 1,040 440 286 240 232 20 a220 *405 *a4,200 al,200 1,570 491 2,300 995 437 284 240 232 21 a220 358 2,580 a950 1,370 582 2,860 965 428 282 238 232 22 a220 330 *1,460 a850 1,260 574 2,180 975 400 280 238 232 23 a220 318 1,100 a850 1,220 582 1,640 1,120 413 278 236 232 24 a220 332 1,120 al.OOO 1,300 650 1,330 1,060 473 276 234 228 25 a220 332 1,360 1,020 1,420 626 1,150 935 449 274 252 228 26 236 330 1,590 930 1,250 594 1,040 895 410 272 232 226 27 230 312 1,350 880 *1,130 566 925 *830 413 270 252 225 28 225 310 a2,400 1,330 1,020 550 870 762 410 270 252 223 29 223 294 a2,000 a2,200 _ 542 845 686 392 268 250 221 30 223 290 al,500 al,900 524 830 TT5"642 388 268 24:8 219 31 221 al,100 1,560 506 / -LO 268 Total 7,671 9,780 33,580 34,140 41,430 18,235 28,943 28,307 17,456 9,557 7,640 6,998 Mean 247 326 1,083 1,101 1,480 588 965 913 582 308 246 233 Cfsm 1.48 1.95 6.49 6.59 8.86 3.52 5.78 5.47 3.49 1.84 1.47 1.40 In. 1.71 2.18 7.48 7.60 9.23 4.06 6.45 6.30 3.89 2.13 1.70 1.56 Ac-ft 15,220 19,400 66,600 67,720 82,180 36,170 57,410 56,150 34,620 18,960 15,150 13,880 Calendar year 1957: Max - Mln - Mean - Cfsm - In. - Ac-ft - Water year 1957-58: Max 5,640 Mln 210 Mean 668 Cfsm 4.00 In. 54.29 Ac-ft 485,500 Peak discharge (base, 2,500 cfs). Dec. 20 (5 a.m.) 4,490 cfs (9.55 ft); Dec. 28 (8 a.m.) 2,720 cfs (7.92 ft); Jan. 29 (2:50 p.m.) 2,740 cfs (7.94 ft); Feb. 16 (4 a.m.) 6,760 cfs (10.80 ft)j Apr. 20 (11:50 p.m.) 5,250 efs (8.41 ft). ______* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of 1 discharge measurement, recorded range In stage, and records for station near Rainbow and Blue River near Blue River.

534540 O -60 -9 122 WILLAMETTE RIVER BASIN

1595. South Fork McKenzie River near Rainbow, Oreg.

Location. Lat 44°08 I 10", long 122 014'50" (revised), in NEir sec. 31, T. 16 S., R. 5 E., c right bank 0.2 mile upstream from Cougar Creek, 2 miles south of Rainbow, and 5 miles southeast of town of Blue River. Drainage area.--211 sq mi. Records available. October 1947 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,236.42 ft above mean sea level (Bureau of Public Roads bench mark). Prior to Nov. 4, 1947, staff gage at site 40 ft upstream at same datum. Average discharge.--11 years, 962 cfs (696,500 acre-ft per year). Extremes. Maximum discharge during year, 8,980 cfs Feb. 16 (gage height, 6.26 ft); mini mum, 211 cfs Oct. 25, caused by construction operations at Cougar Dam; minimum daily, 220 cfs Nov. 5-9. 1947-58: Maximum discharge, 17,600 cfs Dec. 11, 1956 (gage height, 8.66 ft), from rating curve extended above 8,100 cfs by logarithmic plotting; maximum gage height, 8.90 ft Dec. 22, 1955 (backwater from debris); minimum discharge, 207 cfs Sept. 13, 14, 1957; minimum daily, 210 cfs Oct. 1, 1947. Maximum discharge known, 24,500 cfs Dec. 28, 1945 (gage height, 8.8 f';, from floodmarks, at Corps of Engineers gage at site 40 ft upstream; corresponding gage height at present site and datum, about 9.3 ft), computed by Corps of Engineers. Remarks. Records excellent except those for periods of doubtful gage-height record, which are good. Slight regulation at times in October and June to September resulting from construction work at Cougar Dam, three-quarters of a mile above the station. No diver sion above station.

Rating tables, water year 1957-58, except periods of doubtful gage-height record (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30 1.0 215 3.0 1,880 1.0 195 3.0 1,880 1.5 480 4.0 3,500 1.5 440 3,500 2.0 830 6.0 8,200 2.0 800 8,200 2.5 1,280 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 246 d228 572 1,220 1,740 1,200 664 1,040 776 446 250"285 240 2 335 d223 d400 1,090 1,490 1,090 648 1,050 760 440-452 240 3 402 d228 d590 1,000 1,510 1,000 626 ,060 760 280 240 4 372 d228 d575 d886 1,170 920 605 ,060 728 412 280 240 5 340 d220 d566 d814 1,080 890 577 ,110 688 596 280 240 6 510 d220 850 822 1,020 824 570 ,100 1,020 585 280 240 7 545 d220 5,250 d850 1,000 792 556 ,050 1,050 596 276 255 8 520 d220 1,800 *846 1,050 744 *549556" ,120 1,100 574 276 240 9 510 d220 1,190 854 1,040 720 1,240 1.110 *368 271 248 10 500 d225 928 870 1,240 696 688 1,520 1,660 558 271 244 11 285 d251 766 1,120 1,250 664 744 1.540 900 552 *271 240 12 280 545 687 1,960 1,750 640 784 i.iSb 832 546 266 244 13 540 1.000 605 1,880 1,990 655 864 980 768 341 262 546 14 408 910 568 1,570 1,940 612 920 920 696 341 258 15 *3TO" 659 540 2,240 4,220 598 890 940 656 556 258 d262 16 305 d510 540 2,020 7.520 577 1,060 1,050 598 325 258 d250 17 285 d458 534 2,750 4,760 5T7 1,770 1,150 563 325 258 d248 18 275 d540 610 2,460 5,540 584 2,080 1,220 521 325 258 d244 19 265 d624 2,340 1,850 d2,750 584 2,160 1,200 494 320 258 d244 20 260 *547 *6.220 1,490 d2,270 655 5,120 1,150 488 315 253 d244 21 256 474 4,300 1,230 d2,020 768 4,080 1,110 482 310 253 248 22 2251 426 2,260 1,080 dl,870 760 5,250 1,110 452 310 255 d248 23 d251 596 1,560 1,080 dl,820 760 2,550 1,500 455 310 248 d248 24 d251 426 1,560 1,570 1,940 856 1,840 1,220 549 505 244 d244 25 256 458 2,020 1,540 d2,250 852 1,550 1,040 514 500 240 d240 26 ' 260 458 2,460 1,200 dl.800 808 1,550 *1,010 470 500 240 d240 27 251 408 2,080 1,150 *1,560 768 1,210 930 482 295 240 d258 28 246 396 4,020 1,850 1,540 744 1,100 856 482 295 240 255 29 d258 372 2,870 5,190 - 756 1,050 760 452 290 258 255 50 d255 360 1,920 720 1,030 704 452 262 d251 31 <$ZS5 1,480 2j 260 696 m 290 248 Total 9,049 12,190 49,859 47,282 58,650 23,426 39,221 55,026 20,501 10,648 8,105 7,426 Mean 292 406 1,608 1,525 2,095 756 1,507 1,065 677 545 261 248 Cfsm 1.38 1.92 7.62 7.23 9.95 5.58 6.19 5.05 5.21 1.65 1.24 1.18 In. 1.59 2.15 8.78 8.55 10.34 4.15 6.91 5.82 5.58 1.88 1.45 1.31 Ac-ft 17,950 24,180 98,850 95,780 116,300 46,460 77,790 65,510 40,270 21,120 16,080 14,750 Calendar year 1957: Max 6,220 Mln 211 Mean 794 Cfsm 5.76 In. 51.10 Ac-ft 575,100 Water year 1957-58: Max 7,520 Min 220 Mean 874 Cfsm 4.14 In. 56.25 Ac-ft 633,000 Peak discharge (base, 3,500 cfs). Dec. 20 (6 a.m.) 6,900 cfs (5.52 ft); Dec. 28 (9 a.m.) 4,440 cfs (4.47 ft); Jan. 29 (3:50 p.m.) 4,020 cfs (4.26 ft); Feb. 16 (4:30 a.m.) 8,980 cfs (6.26 ft); Apr. 20 (12 p.m.) 4,460 cfs (4.48 ft). * Discharge measurement made on this day. d Doubtful gage-height record; discharge computed on basis of appearance of recorder chart and records for station above Cougar Reservoir, near Rainbow. WILLAMETTE RIVER BASIN 123

1620. Blue River near Blue River, Oreg.

Location (revised). Lat 44°10'55", long 122°16'45", in NW£ sec. 13, T. 16 S., R. 4 E., on right bank 3 miles upstream from Quartz Creek and 3j miles northeast of town of Blue River. Drainage area. 75 sq mi, approximately. Records available. September 1935 to September 1958. Monthly discharge only September 1935, published in WSP 1318. Sage.--Water-stage recorder. Altitude of gage is 1,220 ft (from river-profile map). Average discharge. 23 years, 395 cfs (286,000 acre-ft per year). Extremes.--Maximum discharge during year, 8,400 cfs Dec. 20 (gage height, 7.15 ft), from rating curve extended above 4,300 cfs on basis of shape of previous curve defined to 7,400 cfs; minimum, 22 cfs Sept. 7,8. 1935-58: Maximum discharge, 13,300 cfs Dec. 28, 1945 (gage height, 9.80 ft), from rating curve extended above 7,400 cfs; minimum, 13 cfs Sept. 27, 28, Oct. 1,2, 1938. Remarks. Records excellent except those for period of backwater from debris, which are good. No regulation or diversion above station.

Rating tables, water year 1957-58, except period of backwater from debris (gage height, in feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 2O Dec. 21 to Sept. 30 21 2.0 440 0.99 22 2.O 490 37 2.5 820 1.0 23 2.5 890 59 3.0 1,320 1.1 40 3.0 1,380 86 4.0 2,650 1.2 64 4.0 2,650 159 7.O 8,1OO 1.4 130 5.O 4,280 1.6 220 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 39 34 124 626 1,030 562 304 328 126 94 34 28 2 72 32 227 546 842 482 298 322 162 98 32 26 3 100 30 187 490 754 418 274 310 154 94 32 26 4 103 28 159 426 674 368 256 298 ISO 91 32 26 5 83 28 147 4O5 642 361 238 298 138 85 32 24 6 83 28 1,270 426 602 322 220 286 298 79 30 23 7 136 28 3,O80 458 610 310 *215 256 340 *76 30 23 8 110 28 1,300 482 618 292 210 268 298 7O 30 22 9 89 28 74O *506 746 268 210 28O 322 64 30 23 10 67 34 517 602 1,230 262 322 280 268 61 30 23 11 *55 89 392 1,240 1,080 250 347 274 226 55 30 23 12 57 482 326 2,310 1,580 238 340 226 2O5 50 30 24 13 159 1.49O 272 1.51O 1,590 226 368 190 180 46 30 73 14 164 732 266 1,130 1,320 215 361 175 162 46 30 55 15 1OO 475 238 1,760 2,760 21O 328 180 146 46 *3O 48 16 78 338 244 1,390 5.77O 205 4O3 195 134 46 30 36 17 64 238 308 1,940 2,27O 210 1,190 195 123 46 30 32 18 57 356 41O 1.47O 1,680 226 1,200 190 116 46 29 30 19 52 392 2,400 98O 1,170 232 1,180 ISO 108 46 29 30 20 46 302 7.47O 754 917 274 2.400 166 105 46 29 3O 21 44 *238 3,540 626 754 382 2,160 158 101 46 29 30 22 44 196 1,600 522 666 396 1,440 158 94 46 28 32 23 44 177 l.OOO 594 714 389 1,06O 185 98 44 26 30 24 44 168 1,290 1,030 85O 418 818 170 126 44 26 29 25 46 159 1,89O 98O 1,210 434 650 146 126 44 26 29 26 46 151 2,OOO 794 1,O20 426 522 130 108 44 26 28 27 44 136 1,4OO 722 *810 382 426 *126 105 40 26 26 28 39 128 2,59O 1,56O 666 354 368 119 1O5 38 26 26 29 37 117 1,730 2,500 - 340 34O 108 98 38 32 24 30 37 110 1,O8O 322 328 1O1 98 34 23 31 37 786 1^360 316 T23 36 30 Total 2,176 6,772 38,983 31,987 32,575 1O,O90 18,776 6,421 4,820 1,743 918 902 Mean 7O.2 226 1,258 1,032 1,163 325 626 207 161 56.2 29.6 30.1 Cfsm 0.936 3.01 16.8 13.8 15.5 4.33 8.35 2.76 2.15 0.749 0.395 O.401 In. 1.O8 3.36 19.33 15.86 16.15 5.00 9.31 3.18 2.39 O.86 0.46 O.45 Ac-ft 4,320 13,430 77,320 63,45O 64,61O 20,O10 37,240 12,740 9,560 3,46O 1,82O 1,790 Calendar year 1957: Max 7,47O Min 21 Mean 387 Cfsm 5.16 In. 7O.12 Ac-ft 28O,40O Water year 1957-58: Max 7,470 Min 22 Mean 428 Cfsm 5.71 In. 77.43 Ac-ft 309,800 Peak discharge (baseas, 2,600, cfs).cs. --Dec.--ec. 7 (1:30: a.m.a.m.) 4,320, ccfs (5.02. ft); Dec.. 20 (4 p.m.).. 8,4OO cfs (7(7.15 ft); Dec. 28 (5 a.m.) 3,OOO cfs (4.23 ft); Jan. 29 (12 m.) 3.310 cfs (4.43 ft); Feb. 16 (2 a .m.) 5,120 cfs (5.44 ft); Apr. 20 (7:50 p.m.) 5,26O cfa (4.4O ft).______* Discharge measurement made on this day. Note . - -Backwater from debris July 13 to Sept. 30. 124 WILLAMETTE RIVER BASIN

1625. MoKenzie River near Vida, Oreg.

Location.--Lat 44°07'30 n , long 122°28'10", in NE£ sec. 5, T. 17 S., R. 3 E., on left bank 1 mile upstream from head of Martin Rapids and 5 miles east of Vida. Drainage area. 930 sq mi, approximately. Records available. July 1910 to March 1911 (published as "at Martins Rapids, near Vida"), September 1924 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 855.56 ft above mean sea level, datum of 1929. July 1, 1910, to Mar. 31, 1911, staff gage at site 3 miles downstream at differ ent datum. Sept. 1, 1924, to Nov. 16, 1928, staff gage at site 20 ft upstream at same datum. Average discharge. 34 years (1924-58), 3,988 cfs (2,887,000 acre-ft per year). Extremes. Maximum discharge during year, 33,700 cfs Dec. 20 (gage height, 10.86 ft): min imum; 1,610 cfs Nov. 3-7 (gage height, 0.79 ft). 1910-11, 1924-58: Maximum discharge, 64,400 cfs Dec. 28, 1945 (gage height» 17.70 ft), from rating curve extended above 32,000 cfs by logarithmic plotting; minimum, 1,260 cfs Nov. 7, 1930, Sept. 17, Oct. 4, 8, 9, 1931 (gage height, 0.36 ft). Flood in January 1923 reached a stage of 17.2 ft, from floodmarks (discharge, 62,000 cfs). Remarks. Records excellent. No regulation or diversion above station. Revisions (water years). WSP 1124: 1943.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 2O Dec. 21 to Sept. 3O 0.7 1,480 0.8 1,660 2.0 3,520 2.0 3,580 4.O 8,100 4.0 8,250 7.0 18,200 7.0 18,200 11.0 34,300 10.0 30,200 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,860 1,650 2.070 6,250 8,490 6.270 3,450 ,950 3,680 2,850 2,060 1,890 2 2,110 1,620 2,460 5,700 7,280 5,760 3,420 ,880 3,660 2.86O 2,040 1,880 3 2,340 1,620 2,3OO 5,280 6,560 5,350 3,330 ,840 3,700 2,830 2,020 1,860 4 2,280 1,620 2,200 4,840 6,030 4,970 3,220 ,770 3,640 2,780 2,OOO 1,830 5 2,070 1,610 2,170 4,550 5,700 4,840 3,140 ,820 3,530 2,740 2,000 1,820 6 2,O3O 1,610 4,740 4,470 5,390 4,580 3,080 ,730 4,530 2,700 1,980 1,800 7 *2,170 1,620 14,700 4.420 5.300 4,400 3,070 ,510 4.910 *2,670 2.OOO 1.770 8 2,110 1,620 8,050 4,420 5,350 4,230 3.050 ,640 4,820 2,610 2,020 1,790 9 2,070 1,620 5,380 4,420 5,540 4,080 3,070 ,880 4,910 2,590 2,020 1,840 10 1,940 1,660 4,400 4,490 7,350 3,980 3,450 ,040 4,470 2,560 2,010 1,840 11 1,890 1,820 3,840 6,070 6,900 3,880 *3,680 .130 4,170 2,540 2,OOO 1,830 12 1,860 2,670 3,480 *1O,OOO 8,910 3,760 3,660 ,640 4,000 2,510 2,OOO 1,840 13 2,150 6.080 3,250 9,060 10,000 3,640 3,880 ,150 3,800 2.5OO 1,980 2.240 14 2.380 a5,OOO 3,140 7,280 9,150 3,540 4,020 ,980 3,600 2,450 1,980 2,080 15 2,080 a4,000 3,020 9,870 15,600 3,450 3,880 ,980 3,490 2,380 1,960 2,010 16 1,940 a3,200 3,050 8,910 26.600 3,380 4,380 ,230 3,360 2,370 1,950 1,940 17 1,870 a2,8OO 3,200 11,600 17,500 3,380 7,370 ,440 3,270 2,360 1,950 1,920 18 1,840 a2,800 3,800 10,300 14,000 3,380 8,880 ,580 3,200 2,320 *1,940 1,890 19 1,800 a3,4OO 11,200 8,100 11,200 5.360 8,550 ,600 3,140 2,310 1,920 1,900 20 1,790 a3,OOO 31,600 6,780 9,570 3,470 12,400 ,420 3,100 2,280 1,900 1,900 21 1,760 *2,690 21,700 6,120 8,310 3,880 15.100 ,320 3,030 2,260 1,890 1,9OO 22 1,760 2,510 12,100 5,480 7,560 3,900 12,500 ,320 2,960 2,250 1,890 1,9OO 23 1,750 2,390 8,430 5,410 7,590 3,840 9,960 ,970 2,980 2,240 1,860 1,890 24 1,750 2,380 8,730 6,880 7,860 4,O40 8,220 ,690 3,270 2,200 1.830 1,860 25 1,770 2,340 10,700 6,800 9,900 4,O6O 7,050 ,250 3,220 2,190 1,830 1,840 26 1,790 2,320 12,500 6,160 9,330 3,980 6,340 ,OOO 3,020 2,160 1,840 1,830 27 1,730 2,220 1O.3OO 5,740 8,100 5,820 5,790 * ,900 3,O20 2,140 1,830 1,800 28 1,700 2,210 17,300 8,670 *6,980 3,740 5,410 ,800 2,980 2,120 1,840 1,790 29 1,680 2,110 13,100 13.600 - 5,680 5,190 3,530 2.900 2,100 1,940 1,790 30 1,680 2.O5O 9,24O 13,100 3,640 5,020 3.420 2 9OO 2.080 1,950 1,770 31 1.660 7,320 10,600 ______3,510 3,620 2,080 1,900 Total 59,610 74,240 249,470 225,370 258,050 125,790 173,560 137,030 107,260 75,030 60,330 56, 240 Mean 1,923 2,475 8,047 7,270 9,216 4,058 5,785 4,420 3,575 2,420 1,946 1,875 Cfsm 2.O7 2.66 8.65 7.82 9.91 4.36 6.22 4.75 3.84 2.60 2.09 2. 02 In. 2.38 2.97 9.98 9.01 10.32 5.03 6.94 5.48 4.29 3.00 2.41 2.25 Ac-ft 118,200 147,300 494,800 447,000 511,800 249,5OO 344, 300 271,800 212,700 148,800 119,700 111,600 Calendar year 1957: Max 31,6OO Mln 1.61O Mean 4,107 Cfsm 4.42 In. 59.96 Ac-ft 2,974,OOO Water year 1957-58: Max 31,60O Mln 1,61O Mean 4,389 Cfsm 4.72 In. 64. O6 Ac-ft 3,178,000 Peak discharge (base, 16,OOO cfs). Dec. 7 (5:30 a.m.) 17.2OO cfs (6.73 ft); Dec. 2O (7:30 p.m.) 33,700 cfs (10.86 ft); Dec. 28 (8 a.m.) 19.6OO cfs (7.35 ft); Jan. 29 (3:30 p.m.) 16,8OO cfs (6.61 ft); Feb. 16 (5 a.m.) 30,900 cfs (1O.16 ft); Apr. 2O (12 p.m.) 17,OOO cfs (6.65 ft). * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of recorded range In stage and records for stations at McKenzle Bridge and near Coburg. WILLAMETTE RIVER BASIN 125

1655. McKenzle River near Coburg, Oreg.

Location. Lat 44°06'45", long 123°02'4511 , In NE^NEi sec. 9, T. 17 S., R. 3 W., on left bank at downstream side of Armitage Bridge, 2 miles southeast of Coburg, and 3 miles upstream from mouth. Drainage area. 1,310 sq mi, approximately. Records available. October 1944 to September 1958. Gage. Water-stage recorder. Datum of gage is 396.32 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Prior to Nov. 24, 1944, wire-weight gage at same site and datum. Average discharge. 14 years, 6,182 cfs (4,476,000 acre-ft per year). Extremes. Maximum discharge during year, 59,100 cfs Dec. 21 (gage height, 14.35 ft); min imum, 1,360 cfs Oct. 20 (gage height, 1.05 ft). 1944-58: Maximum discharge, 88,200 cfs Dec. 29, 1945 (gage height, 17.36 ft), from rating curve extended above 59,000 cfs; minimum daily, 1,310 cfs Oct. 29, 1944. Remarks. Records good except those for periods of shifting control, which are fair. Slight diurnal fluctuation caused by log ponds and powerplants upstream. Water supply for city of Eugene is diverted 10 miles upstream; small diversions for irrigation above station.

Rating tables, water year 1957-58, except periods of shifting control (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 2O Dec. 21 to Sept. 30 1.4 1,790 6.0 1Z,70O 1.4 1,670 7.O 15,400 2.0 2,650 8.O 21.1OO 3.0 4,060 10.0 31,000 3.0 4,ISO 10.0 31,000 5.0 8,500 31.0 49,500 4.O 6,400 13.0 49,500 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2,000 ,890 2,260 10,800 15, 500 9,910 4,940 7.100 4,260 5.340 2.180 1,890 2 2,130 ,84O 2,700 9,670 12, 900 8,890 4,840 6,920 4,110 3,310 2,160 2,030 3 2,770 ,83O 2,72O 8,71O 11,400 8,150 4,740 6,720 4,220 3,230 2,090 1,880 4 2,700 ,880 2,540 7,980 10,300 7,500 4,560 6,520 *4,290 3,140 2,180 1,880 5 2,540 ,830 2,460 7,400 9,460 7,180 4,510 6,400 4,010 3,060 2,090 1,860 6 2,400 ,830 2,970 7,120 8,800 6,950 4,350 6,250 4,580 2,990 2,080 1.750 7 2,480 ,840 16,700 6,900 8,530 6,500 4,420 6,050 5,980 2,960 2,080 1,860 8 2,530 ,930 12,200 6,850 8,500 6,520 4,330 5,940 5,680 2,920 2,050 1,890 9 2,440 ,800 7,930 6,850 8.500 6,400 4.290 6,100 5,820 2,880 2,060 1,980 10 2,260 ,840 5,860 6.620 10,300 6,280 4,510 6,100 5,420 2,820 1,980 1,890 11 2,170 ,050 4,880 8,150 10,500 5,960 4,820 6,300 4,960 2,780 2,000 1,880 12 2,100 ,340 4,410 12,600 12,000 5,780 4,740 5,960 4,740 2,750 2,050 1,870 13 2,360 ,250 4,000 15,800 14,900 *5,560 4,880 5,440 4,510 2,630 2,000 2,220 14 «2.890 * .000 3,830 11,900 13, 700 5,420 5,240 5,080 4,310 2,690 1,980 2.280 15 2,620 5,300 3,700 13, 000 18,400 5,220 5,120 4,920 4,130 2,580 1,960 2,260 16 2,200 3,990 3,670 13, 000 41,100 5,080 5,520 4,960 4,000 *2,520 1,980 2,210 17 2,230 3,340 3,940 15,400 29,500 4,940 7,180 5,060 3,840 2,520 1,890 1,990 18 2,190 3,190 5,240 16,500 21,400 4,980 11,500 5,120 3,760 2,620 1,920 1,950 19 2,050 3,890 11,200 13,000 16,400 4.840 10,400 5,220 3,680 2,560 1,910 1,960 20 1,920 3,560 *47,600 *11,100 13,600 4,920 13, 100 5,000 3,610 2,460 1,910 1,960 21 2,000 3,160 49. 100 10, 200 11,500 5,240 20,200 4,860 3,450 2,500 1,910 1,840 22 1,930 2,940 25, 600 9,040 10, 400 5,400 *18,500 4,740 3,450 2,420 1,880 2,140 23 1,910 2,720 *15,400 8,480 10,200 5,380 15,400 5,280 3,550 2,390 1,890 1,980 24 1,980 2,600 13,300 10, 100 10, 100 5,560 12,800 5,180 3,870 2,330 1.820 1,930 25 1,980 2,650 16,200 10,500 13,800 5,680 11,000 5,000 3,980 2,320 1,880 1,910 26 1,980 2,590 18,800 9,760 14,500 5,760 9,760 4,550 3,610 2,320 1,880 1,890 27 1,930 2,500 15 , 800 8,920 13,500 5,520 8,860 4,240 3,580 2,220 *1,860 1,880 28 1,960 2,480 26,000 11,100 11,300 5,340 8,180 4,380 3,600 2,300 1,860 1,750 29 1.890 2,420 22,700 17,100 - 5,240 7,680 4,030 3,440 2,200 1,930 1,950 30 1,920 2,300 16, 200 23.200 5,240 7,220 5,850 5^400 2, 180 1,870 31 1,950 12,800 20,100 5,020 3 , 880 2,240 1^910 Total 68,410 85,780 382,710 347,850 390,790 186,360 237,590 167,150 125,840 82,180 61,450 58,610 Mean 2,207 2,859 12,340 11,220 13,960 6,012 7,920 5,392 4,195 2,651 1,982 1,954 Cfsm 1.68 2.18 9.42 8.56 10.7 4.59 6.05 4.12 3.20 2.02 1.51 1.49 In. 1.94 2.44 10.86 9.88 11.09 5.29 6.75 4.75 3.57 2.33 1.74 1.66 Ac-ft 135,700 170,100 759,100 690,000 775,100 369,600 471,300 331,500 249,600 163,000 121, 900 116,300 Calendar year 1957: Max 49,100 Mln 1,650 Mean 5,545 Cfsm 4.23 In. 57.45 Ac-ft 4,014,000 Water year 1957-53: Max 49,100 Mln 1,730 Mean 6,013 Cfsm 4.59 In. 62.30 Ac-ft 4,353,000 Peak discharge (base, 24,000 cfs). Dec. 21 (5 a.m.) 59,100 cfs (41.35 ft); Dec. 28 (3 p.m.) 30,800 cfs (9.97 ft); Jan. 30 (12:30 a.m.) 25,200 cfs (8.84 ft); Feb. 16 (1 p.m.) 46,700 cfs '(12.57 ft).______* Discharge measurement made on this day. Note.. Shifting-control method used Nov. 13 to Dec. 7, Dec. 28 to Feb. 15, Apr. 21 to May 28. 126 WILLAMETTE RIVER BASIN

1660. Willamette River at Harrisburg, Qreg.

Location. Lat 44°16'05", long 123°10'25", in SW^NE^ sec. 16, T. 15 S., R. 4 W., on right bank 10 ft downstream from U. S. Highway 99 at Harrisburg and at mile 162.9. Drainage area. 3.420 sq mi, approximately. Records available. October 1944 to September 1958. Gage-height records collected at same site In 1927, 1928, 1931, 1934, are contained in reports of U. S. Weather Bureau. Gage. Water-stage recorder. .Datum of gage is 290.39 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Oct. 1 to Nov. 14, 1944, wire-weight gage on bridge 10 ft upstream at same datum. Average discharge. 14 years, 13,100 cfs (9,484,000 acre-ft per year). Extremes. Maximum discharge during year, 96,700 cfs Dec. 21 (gage height, 14.88 ft); min- Imum, 3,750 cfs Oct. 22. 1944-58: Maximum discharge, 210,000 cfs Dec. 29, 1945 (gage height, 19.69 ft), from rating curve extended above 89,000 cfs; minimum, 1,990 cfs Oct. 30, 1944. Flood of 1861 reached a stage of about 21 ft (present site and datum), from information by local residents. Flood of Jan. 1, 1943, reached a stage of 19.1 ft (present datum), from U. S. Weather Bureau records. Remarks. Records good. Flow regulated at times by Lookout Point Reservoir (see p. 105), Cottage Grove Reservoir (see p. 110), and Dorena Reservoir (see p. 113). Many small diversions above station for irrigation; about 15 cfs diverted from McKenzie River for city of Eugene water supply.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Aug. 13 to Sept. 30) Dot. 1 to Dec. 28 Dec. 29 to Apr. 23 Apr. 24 to Sept. 30 1.0 3, TOO 2.0 6,200 1.0 3,900 2.0 5,820 4.0 13,000 3.0 10, 600 3.0 9,250 7.0 26,000 6.0 21,900 6.0 23,500 10.0 47,000 8.0 32,000 10.0 51,000 14.0 87,000 15.0 98,000

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 4,820 4, ISO 4,500 59,700 36,300 51.200 8,380 12,700 7,860 6,860 4,520 4,630 2 *4,760 4,320 4,570 56,500 56,500 27,600 8,520 11,600 8,040 6,620 4,550 »4,5SO 3 5,760 4,130 4,320 33,800 55,200 22,800 8,060 10, 900 8,440 6,210 4,550 4,580 4 7,150 4,110 4,410 30,200 28,500 14,700 7,700 10,500 9,590 5,850 4,550 4,630 5 6.6S6 4,040 4,590 28, 100 25,500 12,700 7,280 10, 200 11,100 5,600 4,550 4,520 6 5,970 4,200 4,8OO 24,000 21,600 12,100 6,820 10,500 »10,800 5,470 4,430 4.240 7 6,120 4,180 2O,4OO 19,300 18,OOO 10,900 6,920 10,600 13,200 5,440 4,520 4,430 8 5,940 4,260 21,600 16,600 16,500 10,900 6,880 10,500 13,400 5,440 4,550 4,430 9 6,120 4,130 13,800 15,600 14.900 11,100 6,780 10,600 14,200 4,930 4,550 4,520 10 5,330 4,090 15,500 15,200 18,200 10, 700 6,920" 10,800 16,500 4,660 4,520 4,380 11 5,020 4,450 13,700 16,600 20, 900 10,600 7,310 11,200 14,600 4,520 4,460 4,550 12 5,020 5,110 12,700 21,600 22,600 10,300 7,250 11,000 12,200 4,650 4,460 4,900 13 5,260 9,240 10, 900 31,300 28,800 *10,000 7,220 10,800 10, 700 4,400 4,480 5,470 14 6,150 *16.500 9,170 25,200 29,400 9,520 7,310 10,300 9,700 4,580 4,460 5.790 15 5,970 16,100 7,910 24,400 59,700 8,620 7,280 9,450 8,760 4,430 4,320 57555" 16 5,210 12,700 8,020 25,300 79,200 8,200 7,490 S,980 8,690 *4,550 4,580 5,540 17 4,650 11,700 9,140 29,700 59,700 8,020 8,760 8,690 8,150 4,660 4,400 5,350 18 4,570 11,000 11,300 35,300 41,800 7,920 16,500 8,910 7,320 4,780 4,260 5,290 19 4,200 11,000 19,700 29,100 40, 900 7,700 15,800 9,270 6,720 4,660 4,260 5,380 20 4,170 10,300 69,200 *25,500 40, 400 7,640 17,900 9,340 6,580 4,630 4,260 5,410 21 4,170 9,630 91,700 24,000 39,100 8,060 26,400 8,980 7,000 4,750 4,240 5,260 22 3,960 9,360 60,200 21,300 35,500 8,340 *27,800 8,690 7,000 4,600 4.210 5,440 23 5,850 8,500 43,200 18,000 33,800 8,270 50,800 9,340 7,040 4,490 4,4OO 5,290 24 4,09(5 7,770 41,200 19,3OO 33,000 8,720 30,600 9,270 7,500 4,490 4,430 5,350 25 4,130 8,020 46,800 22,000 37,400 8,720 23,300 9,160 8,800 4,580 4,520 5,260 26 4,110 8,130 48,800 20, 900 41,900 9,530 19,800 8,620 8,120 4,580 4,400 5,260 27 4,010 7,880 *46,200 20,500 42,300 9,220 17,900 S,620 7,520 4,400 4,580 5,140 28 3,990 6,780 58,100 22,100 35,600 8,760 15,700 8,510 7,180 4,460 4,600 4,990 29 3,990 6,430 54,500 30,800 - 8,380 14,000 8,040 7,040 4,550 4,660 5,230 30 4,130 5,510 46,7OO 51.000 8,410 12,800 7,650 6,820 4,490 4.900 5,050 31 4,110 42,900 41,760 ::::::: 7,990 7,180 4,550 4,750 Total 153,380 227,550 848,450 814,400 948,800 547,420 395,580 300,500 280, 170 152,660 158,520 150,390 Mean 4,948 7,585 27,570 26,270 33,890 11,210 15,190 9,694 9,339 4,925 4,468 5,015 Ac-ft 304,200 451,300 *1,685 *1,615 *1,882 689,100 784,600 596,000 555,700 302,800 274,800 298,300 Calendar year 1957, (fax 91,700 Mln 3,330 Mean 12,540 Ac-ft 9,077,000 Water year 1957-58 : Max 91,700 Mln 3,850 Mean 13,040 Ac-ft 9,437,000 * Discharge measurement made on this day. * Expressed In thousands. WILLAMETTE RIVER BASIN 127

1665. Long Tom River near Noti, Oreg.

Location. La t 44°03'00", long 123°25'30", in sec. 33, T. 17 S., R. 6 W., on left bank 0.1 mile upstream from railroad bridge, 1 mile downstream from Noti Creek, and 1? miles southeast of Noti. Drainage area. 88 sq mi, approximately. Records available.--October 1935 to September 1958. ;e.--Water-stage recorder. Datum of gage is 388.76 ft above mean sea level (levels by . S. Weather Bureau). Prior to Nov. 6, 1940, staff gage at same site and datum. Average discharge. 23 years, 246 cfs (178,100 acre-ft per year). Extremes.--Maximum discharge during year, 3,510 cfs Dec. 20 (gage height, 16.16 ft); minimum, 10 cfs Sept. 6-8. 1935-58: Maximum discharge, 6,990 cfs Dec. 22, 1955 (gage height, 20.17 ft); mini mum observed, 7 cfs Sept. 25-27, 1939. Remarks. Records excellent. Slight diurnal fluctuation caused by log pond above Noti. No diversion above station. Revisions (water years).--WSP 1318: 1936(M).

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 20 Dee. 21 to Sept. 30 0.7 9.0 1,040 10 7.0 767 1.0 36 12.0 1,700 23 10.0 1,230 2.0 129 14.0 2,300 1.1 44 13.0 2,000 5.0 496 16.0 3,400 2.0 137 15.0 2,750 4.0 377 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 18 22 40 459 1,210 764 304 185 86 52 16"17 12 2 Ta 22 67 421 880 638 338 177 94 5T 11 3 23 22 57 356 718 550 478 172 *106 47 16 11 4 34 22 49 304 594 525 404 166 95 44 16 12 5 37 21 46 275 516 481 334 158 85 41 16 11 6 37 21 57 250 458 445 294 155 85 38 16 11 7 41 21 185 230 458 407 307 147 90 37 16 11 8 36 22 198 244 494 415 275 140 133 37 17 10 9 47 23 132 251 524 447 250 136 138 38 16 T2 10 37 27 99 270 592 458 240 129 104 38 16 13 11 28 56 82 476 564 436 223 126 104 36 15 14 12 27 72 *73 641 866 *384 211 118 93 32 16 15 13 Sg-57 209 66 710 944 356 204 108 84 32 16 36 14 227 63 549 858 322 194 111 80 31 16 33 15 37 1ST 61 552 1,060 300 186 110 75 *30 14 23 16 29 99 67 521 2,400 281 221 106 72 29 14 20 17 24 72 227 755 1,840 268 308 102 68 30 14 20 18 23 94 605 722 1,350 256 415 98 63 29 14 21 19 22 85 1,100 566 992 236 347 102 61 29 13 19 20 20 61 2,770 488 788 232 351 100 60 28 13 18 21 19 56 2,450 443 644 228 348 93 59 27 13 17 22 18 54 1,680 *380 584 226 344 88 58 25 13 17 23 19 51 992 433 551 220 *322 91 56 23 13 17 24 22 47 749 809 847 228 311 97 64 23 13 17 25 26 45 686 792 1,830 226 286 107 70 23 *13 17 26 30 43 1,000 673 1,870 228 265 92 61 22 13 18 27 27 41 909 559 1,320 214 245 88 58 20 13 17 28 *24 42 1,290 810 943 202 229 104 57 21 11 16 29 23 40 1,040 1,350 - 240"199 212 91 54 17 11 15 30 22 38 723 2.240 197 83 52 IT 13 15 31 22 1,870 272 BTTSo 18 13 Total 903 1,816 18,119 19,399 26,695 10,684 8,643 3,665 2,365 965 446 499 Mean 29.1 60.5 584 626 953 345 288 118 78.8 31.1 14.4 16.6 Cfsra 0.331 0.687 6.64 7.11 10.8 3.92 3.27 1.34 0.895 0.353 0.164 0.189 In. 0.38 0.77 7.66 8.20 11.28 4.52 3.65 1.55 1.00 0.41 0.19 0.21 Ac-ft 1,790 3,600 35,940 38,480 52,950 21,190 17,140 7,270 4,690 1,910 885 990 Calendar year 1957: Max 2,770 Min 12 Mean 215 cfsm 2.44 In. 33.15 Ac-ft 155, 5OO Water year 1957-58: Max 2,770 Min 10 Mean 258 Cfsm 2.93 In. 39.82 Ac-ft 186,800 Peak discharge (base, 1,30O efs). Dec. 20 (4:30 p.m.) 3,510 cfs (16.16 ft); Dec. 28 (6 p.m.) 1,420 cfs (10.90 ft); Jan. 30 (7 to 8 a.m.) 2,330 cfs (14.08 ft); Feb. 16 (2 p.m.) 2,710 cfs (14.92 ft); Feb. 26 (4 to 8 a.m.) 2,050 cfs (15.16 ft).______* Discharge measurement made on this day. 128 WILLAMETTE RIVER BASIN

1670. Coyote Creek near Crow, dreg.

Location. Lat 44°01'19", long 123°15'17", in NE£ sec. 11, T. 18 S., R. 5 W., on right bank just upstream from backwater of Pern Ridge Reservoir, 1 mile downstream from Spencer Creek and 5 miles northeast of Crow. Drainage area. 94 sq mi, approximately. Records available.--June 1940 to September 1958. Gage. Water-stage recorder and concrete control. Datum of gage is 374.0 ft above mean sea level (Corps of Engineers bench mark). Prior to Aug. 31, 1940, staff gages near same site at different daturas. Average discharge.--18 years, 191 cfs (138,300 acre-ft per year). Extremes.--Maximum discharge during year, 6,560 cfs Dec. 20 (gage height, 13.29 ft); no TTovTSept. 4-13. 1940-58: Maximum discharge, 10,100 cfs Dec. 21, 1955 (gage height, 14.32 ft, from floodmarks), from rating curve extended above 4,700 cfs by logarithmic plotting; no flow at times. Remarks . Records good. Some small diversions above station for irrigation.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 20 Dec. 21 to Sept. 30 6.0 4,07 0.1 0.8 8.0 688 .2 .9 9.0 940 ,3 2.0 10.0 1,420 .4 4.0 250 11.0 2,240 .5 6.0 440 38 12.0 3,600 .6 8.0 720 145 13.0 5,750 .7 9.0 940 Note . Same as preceding table above 9.0 ft. Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 1.3 2.4 S73~5.3 346 1,330 562 140 75-83 23 9,8 ~T60.8 0.1 2 1.2 2.4 307 821 38T 153 29 ST72 .1 3 278 2.2 6.1 243 516 307 189 65 *36 8.6 .6 .1 4 3.2 2.1 6.1 187 366 243 168 58 35 8.2 .6 0 5 4.7 2.1 6.5 159 292 216 157 55 32 6.1 .5 0 6 4.4 2.1 6.5 140 242 194 142 50 29 5.7 .5 0 7 4.1 2.1 23 148"123 270 170 168 46 37 5.3 .4 0 8 3.9 1.9 48 347 285 154 45 49 5.3 .3 0 9 5.3 1.9 33 181 326 398 139 41 51 5.0 .2 0 10 5.0 2.4 27 179 321 306 137 39 38 4.7 _J. 0 11 5.0 5.0 21 380 320 249 117 37 34 4.7 .1 0 12 4.4 8.2 16 710 624 *207 106 40 31 4.7 .2 0 13 5.3 9.8 *15 947 774 184 97 37 28 4.1 .1 0 14 6.5 32 15 738 790 159 91 36 25 3.6 .2 .1 15 577 46 12 500 1,280 142 82 34 20 *3.0 .2 .2 16 4.4 31 12 349 4.280 128 94 32 18 2.6 .4 17 3.4 19 89 755 1,87"0 116 206 29 16 2.2 .2 H 18 3.2 15 417 706 1,280 110 263 29 13 2.2 .1 1.8 19 2.8 15 918 507 826 97 184 28 11 2.2 .1 1.2 20 2.6 15 5,200 395 554 92 186 26 11 2.2 .1 1.0 21 2.4 12 4,060 365 385 94 213 24 8.6 2.4 .1 1.0 22 2.1 10 2,550 *279 335 92 222 23 ?72 1.3 .1 1.0 23 2.1 8.6 1,450 326 354 91 *203 23 8.6 1.2 .1 1.1 24 1.9 8.2 979 627 521 llS 219 23 9.8 1.1 .1 1.2 25 1.9 7.7 706 580 1,600 118 182 30 16 1.1 *.l 1.1 26 2.1 6.8 950 435 1,810 114 157 28 19 1.1 .1 1.1 27 2.8 6.5 1,000 340 1,420 102 138 24 14 1.0 .2 1.1 28 *2.8 6.5 1,650 553 888 93 120 25 12 1.0 .2 1.1 29 3.0 6.1 1,320 1,490 - 97 106 26 11 .6 .2 1.0 30 3 2 5.7 812 2, 990 154 93 20 11 75-.5 .3 1.0 31 2.8 ' 489 2,400 152 .1°. .2 Total 106.3 Z95.7 22,757.8 18,385 24,747 5,777 4,636 1,149 685.2 111.3 8.0 20.2 Mean 3.43 9.86 734 593 884 186 155 37.1 22.8 3.59 0.26 0.67 Ac-ft 211 587 45,140 36,470 49,080 11,460 9,200 2,280 1,360 221 16 40 Calendar year 1957 : Max 5,200 Min 0 Mean 185 Ac-ft 134,000 Water year 1957-58: Max 5,200 Mln 0 Mean 216 Ac-ft 156,100 Peak discharge (base, 1,600 cfs).--Dec. 20 (11 a.m. to 12 m.) 6,560 cfs (13.29 ft); Dec. 28 (3 to 4 p.m.) 1,800 cfs (10.55 ft); Jan. 30 (12 m. to 1 p.m.) 3,650 cfs (12.03 ft); Feb. 16 (7 a.m.) 5,910 cfs (13.06 ft); Feb. 25-26 (8 p.m. to 3 a.m.) 1,960 cfs (10.73 ft). * Discharge measurement made on this day. WILLAMETTE RIVER BASIN 129

1680. Fern Ridge Reservoir near Eltnira, Oreg.

Location. Lat 44 0 07'15", long 123°18'00", near center of sec. 4, T. 17 S., R. 5 W., in control house at spillway section of dam across Long Tom River and Coyote Creek, 4| miles northeast of Elmira. Drainage area.--252 sq mi, not including Amazon Creek basin (see Remarks). Records available. October 1941 to September 1958. Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Corps of Engineers). Extremes.--Maximum contents during year, 103,700 acre-ft June 8 (elevation, 373.76 ft); minimum, 6,840 acre-ft Jan. 9 (elevation, 352.90 ft). 1941-58: Maximum contents, 124,500 acre-ft Dec. 27, 1955 (elevation, 375.83 ft); minimum since first filling in 1942, 189 acre-ft Nov. 11, 1950 (elevation, 344.00 ft). Remarks. Reservoir is formed by earth-fill dam with concrete outlet and spillway, com- pieced in 1941 by Corps of Engineers; storage began Nov. 13 1941. Capacity, 101,200 acre-ft between elevations 340 (sill of outlet gate) and 373.5 ft (normal maxi mum operating pool level); dead storage, 23 acre-ft below elevation 340 ft. Reservoir used for flood control and improvement of navigation. Since November 1951, most of flow of Amazon Creek has been diverted in SE^- sec. 29, T. 17 S., R. 4 W., and dis charged into Fern Ridge Reservoir; drainage area at point of diversion, 21.3 sq mi.

Capacity table, water year 1957-58 (elevation, in feet, and contents, in acre-feet)

353 6,980 365 41,760 355 10,320 370 71,980 360 22,620 375 115,900 Contents, in acre-feet, at 12 p.m., water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 47,560 17,620 ,180 36,920 41,330 50,810 76,330 100,500 103 , 100 101,700 95.270 84.970 2 46 , 550 16, 690 ,210 31,090 39,320 46,390 77,880 100,900 103,100 101,500 94,910 84,060 3 42,880 15,830 ,270 25,420 36,230 45,870 79,450 101,100 103,100 101,400 94,730 83,320 4 44,330 14,940 ,280 20,530 32,780 47,830 80,960 101,400 103,100 101,000 94,460 82,250 5 43,330 14,020 ,350 17,330 29,510 49,360 82,250 101,500 103,300 100,900 94,190 81,280 6 42,400 13,130 ,470 13,390 26,420 50,870 83,480 101,600 103 , 400 100,900 94,010 80,480 7 41,380 12,380 ,330 9,110 23,810 52,410 84,800 101,600 103,300 100,600 93,750 79,530 8 40,520 11,800 ,390 6,980 21,800 54,650 85,800 101,600 103 , 100 100, 500 93,480 78,660 9 39,500 11,200 ,330 7,030 20,470 56,340 86,810 101,700 102,700 100,300 93,210 77,880 10 38,460 10,790 ,210 7,750 18,480 57,020 87,570 101,800 102,600 100,100 93,120 77,020 11 37,530 10,280 ,130 8,750 19,280 57,950 88,340 102,000 102,800 99,920 92,680 76,260 12 36,830 10,090 ,130 9,860 20,880 59,140 89,110 102,200 102,800 99,650 92,420 75,950 13 35,970 10,240 ,260 10,110 21,560 60,230 89,710 102,200 102,800 99,460 92,070 75,110 14 35,010 10,450 ,180 9,710 22,810 61,330 90,230 102,300 102,800 99,370 91,800 74,360 15 34,110 10,370 ,020 8,590 30,200 62,110 91,020 102,400 102,800 99,280 91,450 73,610 16 33,100 10,130 7,220 8,270 46,030 63,040 91,720 102,400 102,800 98,910 91,020 72,870 17 32,120 9,890 8,050 9,230 55,670 63,840 92,950 102,400 102,700 98,820 90,670 71,980 18 30,980 9,640 8,640 8,990 59,650 64,650 93,660 102,400 102,600 98,630 90,230 70,890 19 30,050 9,480 13,370 8,050 58,890 65,470 93,920 102,500 102,500 98,450 89,970 69,810 20 29,080 8,890 32,820 7,300 55,670 66,220 94,280 102,500 102,400 98,260 89,710 69,020 21 28,130 8,420 49,800 7,130 51,660 67,050 94,640 102,600 102,300 98,080 89,280 67,890 22 27,060 8,180 58,820 7,120 48,050 67,750 95,540 102,600 102,100 97,900 89,020 67,050 23 26,120 8,080 61,590 8,290 43,680 68,600 96,440 102,600 102,000 97,620 88,770 66,150 24 25,160 ,950 60,480 8,590 44,790 69,520 96,990 102,900 102,400 97,350 88,420 65,260 25 24,280 ,790 58,070 7,950 51,150 70,310 97,530 103,100 102,200 97,080 88,000 64,310 26 23,300 ,650 55,610 7,560 55,430 71,040 97,990 102,800 102,200 96,900 87,570 63,510 27 22,380 ,510 53,460 7,860 55,970 71,980 98,450 103,000 102,000 96,710 87,060 62,640 28 21,380 ,360 53,230 8,240 53,990 72,280 98,910 103,100 101,900 95,350 86,640 61,720 29 20,440 ,180 51,550 15,510 - 73,310 99,550 103,100 101,800 95,990 86,310 60,810 30 19,530 ,100 47,780 29,050 74,510 99,920 103,100 101,700 95,810 85,800 59,910 31 18,590 42,680 38,730 75,340 103,100 95,540 85,470 . (t) 358.61 353.08 365.19 364.35 367.28 370.45 373.36 373.70 373.55 372.88 371.72 368.24 (*) -30,050 -11,490 +35,580 -3,950 +15,260 +21,350 +24,580 +3,180 -1,400 -6,160 -10,070 -25,560 Calendar year 1957 t 4-3R 3RO Water year 1957-58...... t +11,270 t Elevation, in feet, at end of month. * Change in contents, in acre-feet. 130 WILLAMETTE RIVEB BASIN

1690. Long Tom River below Pern Ridge Dam, near Smithfield, Oreg.

Location. Lat 44°07'25", long 123 017'50", in SE£ sec. 4, T. 17 S., R. 5 W., on left bank in canalized river channel, 1,000 ft downstream from Pern Ridge Dam, which impounds runoff of Long Tom River and Coyote Creek, and 2| miles south of Smithfield. Drainage area. 252 sq mi, not including Amazon Creek basin. Records available. August 1939 to September 1958. Prior to October 1943, published as "at Smithfleld." Gage. Water-stage recorder and masonry control. Datum of gage is 332.00 ft above mean sea level, datum of 1929 (levels by Corps of Engineers). Prior to Sept. 21, 1939, staff gage and Sept. 21, 1939, to Sept. 13, 1943, water-stage recorder, 2| miles down stream at datum 11.09 ft lower. Average discharge.--19 years, 560 cfs, adjusted for diversion to Coyote Creek since 1943 (405,400 acre-ft per year). Extremes. Maximum discharge during year, 4,200 cfs Dec. 30: minimum daily, 41 cfs Mar. 23. T939-58: Maximum discharge, 11,500 cfs Jan. 1, 1943 (gage height, 15.12 ft, site and datum then in use); minimum daily, 2 cfs Aug. 7, 1941. Remarks. Records good. A few small diversions above station. Records include diversion for irrigation and stockwater to Coyote Creek channel through 24-inch concrete pipe 600 ft long, record for which is based on daily staff-gage readings and occasional discharge measurements. The diversion is several hundred feet upstream and point of return to Long Tom River about 2| miles downstream. Fern Ridge Dam, 1,000 ft upstream from station, was completed in 1941, and has regulated flow since Nov. 13, 1941 (see preceding page). Discharge not adjusted for storage or release from Fern Ridge Dam as evaporation from reservoir at times exceeds natural flow and diversions, and beginning in November 1951 most of flow of Amazon Creek has been diverted in SEt sec. 29, T. 17 S., R. 4 W., and discharged into Fern Ridge Reservoir; drainage area at point of diversion, 21.3 sq mi. Revisions (water years).--WSP 1248: 1940-41, 1948.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 585 446"446 50 5,940 2,140 5,460 45 55 174 51 54 166 2 585 5T 3,870 3,410 5,480 45 53 *174 51 54 301 3 577 440 51 3,640 3,300 1,660 45 55 178 51 54 591 4 569 433 54 3,060 3,110 150 44 89 109 50 54 452 5 561 428 54 2,100 2,900 126 4? 141 57 50 52 45? 6 561 428 121 2,280 2,690 126 44 168 129 50 55 452 7 552 348 235 2,460 2,510 126 44 168 180 50 53 452 8 545 290 235 1,630 2,280 126 44 169 442 51 55 447 9 537 290 235 579 1,920 464 45 101 406 51 55 446 10 537 291 199 476 2,150 655 45 67 162 50 55 445 11 528 286 152 820 1,280 *470 45 67 55 50 53 444 12 528 286 *114 1,600 1,490 250 45 67 55 50 55 439 13 522 281 58 2,010 2,030 135 44 69 55 50 74 459 14 514 281 101 1,980 2,040 138 44 70 55 *49 95 459 15 514 281 148 1,940 1,650 126 44 70 55 49 95 434

16 507 281 148 1,640 186"555 74 45 70 55 50 95 434 17 507 281 261 1,780 61 511 69 53 51 95 429 18 500 277 996 2,040 1,480 60 596 69 55 51 95 428 19 493 273 1,290 2,010 2,920 55 39T 69 55 55 95 428 20 486 268 671 1,690 5,560 49 585 69 55 55 95 423 21 486 268 691 *1,230 3,420 45 *567 69 53 55 94 423 22 486 173 1,270 922 3,440 42 511 66 55 55 96 425 23 479 108 2,160 817 3,520 41 511 55 55 53 9T 418 24 479 108 2,900 1,730 2,400 46 397 69 55 53 96 418 25 472 108 3,400 2,230 1,510 46 562 126 54 53 96 418 26 465 104 3,910 1,840 2,940 46 245 129 55 55 *94 418 27 457 104 3,970 1,380 5,450 46 178 78 55 55 94 418 28 457 104 4,020 1,750 5,560 46 85 55 55 55 94 418 29 *458 104 3,990 1,130 46 59 55 51 55 96 412 30 458 70 3,970 609 46 57 54 BT 55 96 412 31 452 3,940 660 45 122 55 95 Total 15,857 7,886 39,445 55,853 68,221 12,244 5,166 2,651 3,080 1,594 2,411 12,519 Mean 512 263 1,272 1,802 2,456 395 172 84.9 103 51.4 77.8 417 Ac-ft 31,450 15,640 78,240 110,800 155,300 24,290 10,250 5,220 6,110 5,160 4,780 24,850 Calendar year 1957: Max 4,020 Min 28 Mean 469 Ac-ft 359,500 Water year 1957-58: Max 4,020 Min 41 Mean 622 Ac-ft 450,100 Discharge measurement made this day. WILLAMETTE RIVER BASIN 131

1695. Amazon Creek near Eugene, Oreg.

Location. Lat 44°03'40", long 123°11'40", In SE£ sec. 29, T. 17 S., R. 4 W., on right bank 250 ft upstream from diversion structure and 5 miles west of Eugene. Drainage area. 21.3 sq mi. Records available. October 1954 to September 1958. Gage. Water-stage recorder and concrete control. Datum of gage is 372.41 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 3,000 cfs Dec. 20 (gage height, 9.52 ft); no flow July 23 to Sept. 13, Sept. 20-30. 1954-58: Maximum discharge, that of Dec. 20, 1957; no flow at times each year. Remarks. Records good except those from 1.0 to 10 cfs, which are fair, and those below 1.0 cfs, which are poor. During summer and fall natural flow (if any) may be augmented slightly by return flow from irrigation in and below the city of Eugene. Records include diversion at station to Fern Ridge Reservoir; diversion in 1958 water year amounted to 22,580 acre-ft.

Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 0.8 0.3 0.6 33 84 40 12 4.9 3.9 0.5 0 2 .5 .3 1.1 43 56 30 17 4.9 **6.4 ^5 0 3 3.9 .3 1.0 27 42 24 15 4.4 5.6 0 4 T76 .2 .9 21 35 17 13 3.9 2.6 0 5 1.1 .2 .9 15 27 21 14 3.9 1.5 0 6 .5 .2 1.5 12 29 15 14 3.3 3.4 0 7 .9 .2 3.2 10 53 17 23 2.9 15 0 8 .6 .2 2.3 23 76 ~69110 16 2.6 24 0 9 1.0 .3 1.4 27 41 14 2.3 14 0 10 .5 .4 1.2 36 43 34 17 2.0 4.3 0 11 .4 1.5 1.1 129 95 23 10 2.6 2.6 0 12 .3 .7 *1.1 236 171 **18 9.6 2.9 1.7 0 13 3.0 1.8 1.1 95 95 18 8.0 2.0 .4 0 14 1.3 ~8.914 1.0 62 168 15 6.4 1.7 .2 * f .9 15 .6 1.0 45 1,000 13 4.9 1.5 .1 .4 16 .3 1.3 1.8 48 522 13 10 1. .1 .2 17 .3 .9 70 264 167 11 57 1. .1 .1 18 .2 1.9 173 77 91 10 24 .1 .1 19 .2 2.2 504 45 61 8.8 15 .1 .1 20 .2 1.1 1,780 68 47 8.8 21 .1 0 21 .2 .9 578 43 32 8.8 29 .1 0 22 .2 .8 327 *32 59 8.0 31 .1 o' (*) 0 23 .2 .7 106 89 48 16 **28 .1 0 24 .2 .7 83 115 192 26 23 2! 1.0 0 0 25 .3 .7 90 60 309 26 14 3. 3.2 0 0 26 .5 .7 202 40 198 16 11 1. .6 0 0 27 .4 .6 153 35 109 11 9.6 1. .6 0 0 28 *.3 .6 365 125 62 9.6 8.0 6. .6 0 0 29 .3 .6 113 522 - 18 7.2 276 .5 0 0 30 .3 .6 68 787 23 5.6 .4 .5 0 0 31 .3 44 157 13 1.7 0 Total 21.4 43.8 4,677.2 3,321 3,912 696.0 487.3 68.6 93.5 7.0 0 1.8 Mean 0.69 1.46 151 107 140 22.5 16.2 2.21 3.12 0.23 0 0.06 Cfsm 0.032 0.069 7.09 5.02 6.57 1.06 0.761 0.104 0.146 0.011 0 0.0028 In. 0.04 0.08 8.17 5.80 6.83 1.22 0.85 0.12 0.16 0.01 0 0.003 Ac-ft 42 87 9,280 6,590 7,760 1,380 967 136 185 14 0 3.6 Calendar year 1957: Max 1,780 MIn o Mean 29.6 Cfsm 1.39 In. 18.86 Ao-ft 21, 420 Water year 1957-58: Max 1,730 Mln o Mean 36.535.5 Cfsm 1.71 In. 23.28 Ao-ft 26,440 Peak discharge (base, 400 cfs).--Dec. 20 (4 a.m.) 3,000 cfs (9.52 ft); Dec. 28 (4:30 a.m.) 892 cfs (6.31 ft); Jan. 12 (3 p.m.) 521 cfs (5.48 ft); Jan. 17 (l a.m.) 549 cfs (5.55 ft); Jan. 30 (3:30 a.m.) 1,460 cfs (7.57 ft); Feb. 15 (8:30 p.m.) 2,530 cfs (9.07 ft); Feb. 25 (2:30 a.m.) 417 cfs (5.27 ft). Discharge measurement or observation of no flow made on this day. * Field estimate made on this day. 132 WILLAMETTE RIVER BASIN

1700. Long Tom River at Monroe, Oreg.

Location. Lat 44°18'50", long 123°17'45", in NEi see. 33, T. 14 S., R. 5 W., on left bank in canalized river channel at Monroe, Just downstream from Shafer Creek and 800 ft upstream from a concrete drop structure. Drainage area. 391 sq mi. Records available.--November 1920 to July 1921, October 1921 to April 1926; November 1926 to May 1927, October 1927 to September 1958. Prior to October 1930, published as "near Monroe." Gage. Water-stage recorder and concrete control. Datum of gage is 270.00 ft above mean sea level, datum of 1929 (levels by Corps of Engineers). Prior to Nov. 24, 1944, staff gages at various sites ranging from present site to lj miles downstream, at different datums. Average discharge.--35 years (1921-25, 1927-58), 782 cfs (566,200 acre-ft per year). Extremes. Maximum discharge during year, 5,750 cfs Dec. 28 (gage height, 8.25 ft); mini mum, 43 cfs Aug. 1, 6, 7, 9. 1920-58: Maximum discharge, 19,300 cfs Jan. 2, 1943 (gage height, 17.14 ft, site and datum then in use, from graph based on gage readings), includes some overflow from Willamette River near Junction City; no flow Oct. 20-22, 1944 (water filling pool at gage); minimum observed prior to regulation of flow, 7 cfs Sept. 29, Oct.-l, 1939. Remarks. Records excellent. A few small diversions above station. Flow regulated by Fern Ridge Reservoir beginning Nov. 13, 1941 (see p. 129). In 1943-44 river channel was improved from outlet of Fern Ridge Reservoir to a point below Monroe. Revisions (water years). WSP 654: Drainage area. WSP 1248: 1923, 1927, 1928(M). WSP 1288:1952(yearly runoff only).

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 28 Dec. 29 to Sept. 30 4.3 5.5 940 4.2 5.5 985 4.6 205 6.5 2,230 4.3 72 6.5 2,230 4.9 390 8.5 6,310 4.6 212 8.5 6,310 4.9 435 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 587 462 78 4,810 3,120 4.540 260 177 218 76 46 104 2 587 454 82 4,750 4,620 4,350 335 167 *224 76 46 266 3 587 454 82 4,560 4,290 3,120 525 158 236 68 49 330 4 578 446 86 3,930 3,990 642 381 172 207 68 49 471 5 569 446 86 2,760 3,640 570 308 218 108 60 49 47T 6 578 438 98 2,480 3,370 516 260 248 122 60 46 453 7 57S 414 320 2,850 3,270 489 316 241 218 60 43 453 8 578 302 327 2,390 3,250 669 287 248 426 60 46 462 9 569 308 302 1,060 2,820 955 236 218 594 64 43 453 10 560 308 278 945 2,760 1,130 224 144 327 64 46 453 11 560 314 *200 1,550 2,460 *965 207 144 117 64 46 453 12 569 320 185 2,600 2,910 642 197 144 104 60 46 462 13 569 362 106 3,390 3,310 444 187 140 99 60 60 471 14 560 362 106 2,870 3,210 399 182 140 94 *56 99 471 15 551 355 180 2,78O 3,910 363 182 135 94 56 94 471 16 551 341 185 2,440 4,160 279 212 135 90 52 94 471 17 542 320 383 3,010 3,510 242 525 130 86 56 94 471 18 533 320 1,290 3,210 2,870 230 "9451.O6O 126 81 60 94 471 19 524 314 3,030 2,740 3,700 218 126 76 60 99 462 20 524 308 4,260 2,420 4,600 202 945 122 76 60 99 462 21 524 302 4,260 *1,840 4,330 202 *795 122 76 56 99 462 22 515 254 3,800 1,480 4,350 197 642 117 76 52 99 462 23 515 142 3,510 1,470 4,520 197 633 117 76 52 99 462 24 506 142 4,060 2,610 4,850 218 669 108 86 52 99 453 25 506 142 4,200 3,390 4,120 218 651 192 86 52 99 453 26 506 137 5,440 2,700 5,580 207 471 187 81 52 *99 453 27 497 132 5,270 2,060 5,270 197 399 162 76 52 104 453 28 488 132 5.680 2,860 4,870 182 272 112 76 52 104 444 29 *479 132 5,460 4,220 - 182 197 104 76 49 108 444 30 479 124 5,080 4,100 230 187 99 76 49 108 444 31 470 4,920 3,410 248 135 49 108 Total 16,739 8,987 63,344 87,685 107,460 23,243 12,690 4,795 4,832 1,807 2,414 13,111 Mean 540 300 2,043 2,829 3,838 750 423 155 146 58.3 77.9 437 Ac-ft 33,200 17,830 125,600 173,900 213,100 46,100 25,170 9,510 8,690 3,580 4,790 26,010 Calendar year 1957: Max 5,680 Kin 36 Mean 732 Ac-ft 530,000 Water year 1957-58: Max 5,680 Min 43 Mean 950 Ac-ft 687,500 Discharge measurement made on this day. WILLAMETTE RIVER BASIN 133

1710. Marys River near Philomath, Oreg.

Location.--Lat 44°31'35", long 123°20'00", in SW-f sec. 18, T. 12 S., R. 5 W. , near midspan on downstream side of bridge, 2 miles southeast of Philomath and 3j miles upstream from Muddy Creek. Drainage area. 159 sq ml (including drainage area of Evergreen Creek above road crossing, li miles south of station). Records available. October 1940 to September 1958. Gage. Wire-weight gage read twice daily, more often during floods. Altitude of gage is 218 ft (by barometer). Average discharge. 18 years, 474 cfs (343,200 acre-ft per year). Extremes. Maximum discharge during year, 4,960 cfs Dec. 20 (gage height, 19.40 ft); minimum, 6.9 cfs Aug. 27, 30. 1940-58: Maximum discharge observed, 8,660 cfs Dec. 21, 1955 (gage height, 20.83 ft); minimum observed, 4.7 cfs Oct. 15, 1952. Remarks. Records excellent. Records include flow of Evergreen Creek at road crossing II miles south, with which overflow from Marys River may at times be mingled. Slight regulation by small storage reservoir on Rock Creek from which municipal supply is diverted for city of Corvallis. Other small diversions above station for irrigation of 1,500 acres. Revisions.--WSP 1218: Drainage area.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Jan. 50 Jan. 51 to Sept. 3O

1.7 8.0 7.0 658 1.4 6.0 5.0 308 2.0 10.0 1,250 1.7 12 7.0 661 2.5 41 14.0 2,220 2.0 23 10.0 1,530 3.0 74 18.0 5,800 2.5 51 14.0 2,510 4.0 170 20.0 6,065 3.0 85 19.0 4,500 5.0 308 4.0 177 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 12 24 66 868 3,020 1,250 576 570 99 50 12 7.9 2 10 23 195 746 2,280 1,010 750 555 153 45 12 8.7 3 TT 25 192 624 1,610 852 981 332 127 37 11 8.5 4 21 23 151 536 1,170 728 840 304 116 35 12 8.7 5 33 24 127 466 952 674 690 286 96 28 11 7.7 6 33 25 141 418 792 614 583 *264 100 27 *9.5 7.9 7 30 26 855 *378 798 561 539 242 106 26 9.1 7.5 8 27 26 811 376 894 726 467 227 122 28 9.8 T3 9 34 26 505 372 1,570 846 426 213 106 27 9.5 7.9 10 *28 28 354 418 1,740 778 419 196 95 26 9.5 8.7 11 26 32 257 696 1,410 706 365 196 94 26 9.5 8.7 12 22 211 217 1,190 *2,450 636 545 189 91 24 8.5 *8.7 13 45 368 187 1,100 2,930 572 555 174 82 21 8.7 14 14 41 31? 163 938 2,660 507 527 158 79 22 8.7 16 15 36 278 155 1,150 2,250 456 298 152 72 18 8.5 22 16 26 190 177 920 2,820 429 348 124 46 17 8.5 17 17 22 129 762 1,140 2,570 405 621 128 32 16 9.1 22 18 20 137 1,430 1,030 2,430 368 766 151 39 17 8.5 16 19 18 129 2,750 880 1,860 554 636 132 *52 17 8.3 15 20 19 *110 4,750 811 1,420 332 632 132 50 12 7.9 14 21 17 92 3,370 814 1,110 329 684 121 48 7.7 7.9 13 22 17 79 2,700 706 1,010 310 916 117 46 9.8 8.3 14 23 19 71 1,860 930 930 316 1,000 119 48 12 .7 12 24 32 66 1,610 1,460 1,820 306 1,020 120 55 13 .7 12 25 33 61 1,630 1,320 5,290 *561 981 126 56 14 12 26 41 54 2,050 1,110 2,860 552 806 117 51 14 .5 12 27 34 53 1,870 980 2,210 551 657 107 48 15 .0 12 28 31 54 1,670 1,440 1,650. 522 572 124 48 15 .9 11 29 27 56 1,450 2,640 - 511 503 110 50 12 8.7 11 30 25 56 1,300 3,360 551 444 105 48 12 7.5 11 31 25 1,050 *3,860 472 107 12 8.3 Total 815 2,793 34, 785 33,677 52,506 16,565 18,503 5,538 2,255 649.5 277.0 354.2 Mean 26.3 93.1 1,122 1,086 1,875 554 617 179 75.2 20.1 8.94 11.8 Cfsm 0.165 0.586 7.06 6.83 11.8 5.56 5.88 1.13 0.475 0.126 0.056 0.074 In. 0.19 0.65 8.14 7 .88 12.28 5.87 4.35 1.50 0.55 0.15 0.06 0.08 Ac-ft 1,620 5,540 69,000 66,800 104,100 52,860 56,700 10,980 4,470 1,290 549 703 Calendar year 1957: Max 4,73O Mln 7.6 Mean 375 Cfsm 2.36 In. 32.02 Ac-ft 271,500 Water year 1957-58: Max 4,730 Mln 7.0 Mean 462 Cfsra 2.91 In. 39.46 Ac-ft 334,600 Peak discharge (base, 2,8OO cfs).--Dec. 2O (8:45 a.m.) 4,960 cfs (19.40 ft); Jan. 31 (2 a.m.) 4,600 cfs (19.10 ft); Feb. 15 (2 a.m.) 3,070 cfs (15.77 ft); Feb. 16 (9 a.m.) 2,970 cfs (15.45 ft); Feb. 25 (9 a.m.) 5,570 efs (16.68 ft).______* Discharge measurement made on this day. 134 WHXAMETTE RIVER BASIN

1720. Calapooya River at Holley, Oreg.

Location. Lat 44°21'05", long 122°47'10", In SE£ sec. 15, T. 14 S., R. 1 W., on right bank a quarter of a mile southwest of Holley and 5 miles upstream from Brush Creek. Drainage area. 105 sq ml. Records available. September 1935 to September 1958. Gage. Staff gage read once dally below, and two or more times dally above 3.0 ft gage neight. Datum of gage Is 527.20 ft above mean sea level, datum of 1929. Average discharge. 23 years, 450 cfs (325,800 acre-ft per year). Extremes. Maximum discharge during year, 9,900 cfs Dec. 20 (gage height, 11.20 ft, observed at crest); minimum observed, 25 cfs Sept. 12. 1935-58: Maximum discharge, 12,200 cfs Dec. 28, 1945 (gage height, 14.1 ft, froir floodmark); minimum observed, 13 cfs Sept. 8, 1940. Remarks. Records good. Slight regulation at times during low-water periods by small dam upstream; diversions for Irrigation of about 150 acres above station. Cooperation. Gage-height record collected in cooperation with U. S. Weather Bureau. Revisions (water years).--WSP 1044: 1943. WSP 1218: Drainage area.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 20 Dec. 21 to Sept. 30 0.8 35 4.0 1,470 3.0 880 1.0 52 6.0 3,370 4.0 1,560 1.5 150 8.0 5,700 1.0 6.0 3,370 2.0 320 11,0 9,600 1.5 175 8.0 5,700 3.0 795 2.0 370 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 57 39 114 892 1,650 856 379 433 172 118 39 30 2 80 38 210 765 1,340 743 384 392 205 113 38 28 3 105 37 174 655 1,110 655 352 352 202 104 36 27 4 92 36 147 575 928 585 348 330 202 97 35 26 5 84 36 134 525 826 *575 317 305 169 89 35 26 6 98 35-35 589 496 721 515 301 285 257 84 34 26 7 123 2,310 478 710 496 305 281 370 82 34 26 8 123 36 1,200 446 694 492 301 253 313 76 35 26 9 92 35 *740 464 710 482 305 241 289 74 34 26 10 69 40 540 492 970 464 361 229 253 74 34 26 11 56 114 432 1,000 940 446 374 229 209 71 33 26 12 53 230 360 1,860 1,240 424 352 205 233 68 32 25 13 141 1,080 312 1,570 1,510 397 361 190 190 64 32 59 14 192 861 332 1,150 1,330 374 356 178 172 63 31 63 15 114 640 259 1,230 2,360 352 301 166 154 60 30 53 16 80 428 284 1,100 5,860 334 *438 160 142 57 30 43 17 64 316 423 1,800 2,320 334 1,060 154 130 57 30 45 18 58 304 809 1,460 1,710 338 1,180 145 121 55 30 34 19 53 374 3,820 1,080 1,280 330 958 139 111 55 *29 36 20 51 288 «9,420 898 1,020 356 1,730 130 104 53 29 34 21 48 234 5,650 798 850 420 1,960 127 100 52 29 34 22 47 198 2,780 678 716 424 1,600 130 93 48 28 35 23 46 180 1,740 870 726 438 1,320 130 100 45 28 32 24 46 162 1,710 1,270 886 464 1,040 139 204 45 28 31 25 51 150 2,110 1,130 1,530 515 868 139 199 45 28 30 26 51 147 2,240 910 1,450 500 743 115 145 44 27 30 27 44 123 1,960 814 1,280 451 640 104 154 43 27 29 28 43 126 2,950 1,390 1,010 420 580 139 166 42 27 28 29 42 105 2,060 2,640 - 406 530 111 136 41 29 28 30 42 107 1,460 2,920 406 469 97 133 40 33 28 31 *41_ 1,110 2,270 406 130 40 31 Total 2,286 6,534 48,379 34,626 35,677 14,398 20,213 6,158 5,428 1,999 975 990 Mean 73.7 218 1,561 1,117 1,274 464 674 199 181 64.5 31.5 33.0 Cfsra 0.702 2.08 14.9 10.6 12.1 4.42 6.42 1.90 1.72 0.614 O.30O 0.314 In. 0.81 2.31 17.14 12.26 12.64 5.10 7.16 2.18 1.92 0.71 0.35 0.35 Ac-ft 4,530 12,960 95,960 68,680 70,760 28,560 40,090 12,210 10,770 3,960 1,930 1,960 Calendar year 1957: Max 9,420 Hln 26 Mean 455 Cfsm 4.33 In. 58.86 Ac-ft 329,600 Water year 1957-58: Max 9,420 Hln 25 Mean 487 Cfsm 4.64 In. 62.93 Ac-ft 352,400 Peak discharge (base, 2,6OO cfs).--Dec. 7 (8 a.m.) 2,950 cfs (5.60 ft); Dec. 20 (4:3O p.m.) 9,900 cfs (11.20 ft); Dec. 28 (7 a.m.) 3,280 cfs (5.92 ft); Jan. 29 (12:30 p.m.) 3,480 cfs (6.10 ft); Feb. 16 (5 a.m.) 4,720 cfs (7.18 ft).______* Discharge measurement made on this day. WILLAMETTE RIVER BASIN 135

1735. Calapooya River at Albany, Oreg.

Location. Lat 44°37'15", long 123°07'40", In NW£ sec. 13, T. 11 S., R. 4 W., near right bank on upstream side of highway bridge, half a mile downstream from Oak Creek, li miles southwest of Albany, and 3 miles upstream from mouth. Drainage area.--372 sq mi. Records available.--October 1940 to September 1958. Gage.--Wire-weight gage read twice daily, more often at high stages. Datum of gage is T80.37 ft above mean sea level, datum of 1929. Average discharge. 18 years, 931 cfs (674,000 acre-ft per year). Extremes. Maximum discharge observed during year, 19,800 cfs Dec. 21 (gage height, 20.37 ft); minimum observed, 9.8 cfs Aug. 30. 1940-58: Maximum discharge observed, 32,700 cfs Dec. 22, 1955 (gage height, 22.12ft); maximum gage height, 25.5 ft Jan. 2, 1943, from graph based on gage readings (backwater from Willamette River); minimum discharge observed, 4 cfs Oct. 7, 1952; minimum daily, 6 cfs Aug. 14, 21, 28, Sept. 18, 1951, Sept. 30, 1952. Remarks.--Records good. 'Diurnal fluctuation caused by ponds at flour mills near Shedd. Diversions for irrigation of 2,200 acres above station. Revisions.--WSP 1218: Drainage area.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Backwater from Willamette River Dec. 31 to Jan. 6, Feb. 29-22) Oct. 1 to Dec. 20 Dec. 21 to Sept. 3O

1.7 4.5 558 7.O 1,470 2.2 9.O 2,180 11.0 3,140 2.7 116 13.0 4,270 50 14.0 5,160 3.4 246 14.0 5,120 100 16.0 7,350 174 18.0 1O.5OO 3.5 280 2O.O 18,000 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 37 41 13O 1,480 6,080 2,060 662 578 163 16O 46 19 2 *29 44 127 1,070 3,620 1,530 1,200 518 188 146 40 29 3 46 50 202 1,090 *2,420 1,280 1,240 448 222 143 52 31 4 89 28 19O 749 1,810 1,060 756 438 235 130 23 30 5 100 62 166 749 1,440 917 623 366 242 107 55 27 6 103 45 16O 732 1,280 973 518 390 218 111 39 26 7 115 38 947 749 1,260 819 5O4 351 342 1O7 37 31 8 106 37 2,100 707 1,960 994 637 325 455 102 36 17 9 133 38 1,340 903 2.O7O 1,540 581 305 342 95 34 15 10 110 36 77O 931 1,970 1,200 616 28O *339 101 50 *3T 11 9O 43 582 1.7OO 1,72O 906 651 270 290 90 21 27 12 79 52 468 2,670 2,630 784 542 252 262 86 32 27 13 74 221 39O 4,100 3,220 732 48O 265 242 81 36 20 14 81 «1,050 331 4,020 2,85O 686 500 240 218 76 31 28 15 206 892 372 2,580 3,000 6O9 4 SO 222 188 79 28 42 16 140 636 *256 2,O90 6,940 553 651 208 163 77 28 75 17 77 507 393 3,O70 8.750 *539 1,080 172 165 73 30 7863- 18 89 294 901 4,O50 6,120 518 2,230 179 158 77 21 19 81 366 1,900 3,280 3,780 497 1,810 163 148 70 30 53 20 105 340 4,600 2,020 2,320 469 1,440 163 14O 66 30 53 21 46 299 16.800 1,940 1,450 497 2,25O 16O 134 *58 31 56 22 58 251 12,100 1,490 1,100 581 2.520 143 125 68 28 28 23 61 215 7,520 1,230 2,050 658 2,320 143 123 67 26 58 24 60 190 4,110 2,520 2,260 1.08O 1,970 154 133 62 20 46 25 57 178 2.85O 2,980 4,520 1,040 1,510 150 194 61 19 46 26 67 164 3,520 2,430 5,520 952 1,190 170 226 64 21 32 27 77 157 4, ISO 1,680 4,500 812 984 150 176 65 27 34 28 54 143 3,730 2,21O 3,330 69O *819 148 163 65"32 31 39 29 43 143 4,120 4,080 - 609 728 188 178 17 23 30 48 138 4,220 9,220 ---- 833 64O 150 146 52 14 35 31 46 2,640 9.420 714 107 44 24 Total 2,507 6,678 82,085 77,940 89,960 27,132 32,132 7,796 6,318 2,615 955 1,125 Mean 80.9 223 2,648 2,514 3,213 875 1,071 251 211 84.4 30.8 37.5 Cfsm 0.217 O.599 7.12 6.76 8.64 2.35 2.88 0.675 O.567 0.227 O.O83 0.1O1 In. 0.25 0.67 8.21 7.79 8.99 2.71 3.21 O.78 0.63 0.26 0.10 0.11 Ac-ft 4,970 13,250 162,800 154,600 178, 4OO 53,820 63,730 15,460 12,530 5,190 1,890 2,23O Calendar year 1957: Max 16.8OO Mln 13 Mean 840 Cfsm 2.26 In. 30.65 Ac-ft 607 ,90O Water year 1957-58: Max 16.8OO Mln 14 Mean 924 Cfsm E.48 In. 33.71 Ac-ft 668, 9OO

* Discharge measurement made on this day. 136 WttLAMETTE RIVER BASIM

1740. willamette River at Albany, Oreg.

Location. Lat 44°38'20", long 123°06'20", in SW^ sec. 6, T. 11 S., R. 3 W., on right bank at Albany a quarter of a mile downstream from Calapooya River and at mile 120.0. Drainage area. 4,840 sq mi, approximately. Records available.--November 1878 to April 1888 (fragmentary), January to June 1892, November 1892 to September 1894, December 1894 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage.--Water-stage recorder. Datum of gage is 172.18 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Sept. 27, 1906, staff gage a quarter of a mile upstream at same datum. Sept. 27, 1906, to Nov. 13, 1934, staff gage 300 ft upstream at same datum. Average discharge . 64 years (1893-94,1895-1958), 14,420 cfs (10,440,000 acre-ft per year). Extremes. Maximum discharge during year, 106,000 cfs Dec. 22 (gage height, 21.68 ft); minimum, 4,180 cfs Aug. 23. 1878-82, 1892-1958: Maximum discharge, 266,000 cfs Jan. 14, 1881 (gage height, 32.8 ft); minimum, 1,840 cfs Sept. 1, 2, 1940. Maximum stage known, 36.0 ft Dec. 4, 1861 (discharge, 340,000 cfs, from rating curve extended above 220,000 cfs). Flood of Feb. 4, 1890, reached a stage of 33.9 ft (dis charge, 291,000 cfs). Remarks. Records good. Flow regulated at times by Lookout Point, Cottage Grove, Fern Ridge, and Dorena Reservoirs (see p. 105, 110, 129, 113). Albany power canal diverts water from South Santiam River at Lebanon and discharges into Calapooya River near mouth; small diversions for irrigation and municipal water supply. Revisions (water years) . WSP 694: Drainage area. WSP 904: 1939. WSP 964: 1881, 1932(M).WSP 964 (daily high-water figures only) and WSP 1318 (monthly and annual figures only): 1894, 1897, 1901, 1903, 1908. 1910,1916, 1923, 1927. WSP 984: 1916. WSP 1248: 1895, 1902, 1907, 1915(M), 1917(M), 1918-19, 1934(M).

Rating tables, water year 1957-58 (gage height, In feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 22 Dec. 25 to Sept. 30 -0.6 4,650 -1.0 4,100 0.0 5,900 o.o 6,600 4.0 17,800 6.0 24,400 14.0 59,800 14.0 57,700 22.0 108,000 19.0 86,600 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 5,680 4,950 5,550 50,900 62,200 46,000 12,500 15,900 8,600 7,700 4,680 4,980 2 5,650 5,090 5,150 47,000 51,500 40,400 15,700 14,800 9,550 7,700 4,580 4,650 3 *5,980 5,070 5,680 45,500 *47,200 35,700 14,500 15,800 9,710 7,550 4,680 5,000 4 7,320 4,970 5,490 39,900 41,900 25,800 15,400 15,000 10,200 6,900 4,680 5,150 5 7,950 4,930 5,210 56,500 56,000 19,600 12,400 12,600 11,900 6,520 4,680 5,280 6 7,280 4,950 5,650 52,500 51 , 500 18,200 11,200 12,500 12,600 6,550 4,550 5,150 7 7,120 4,970 9,700 27,400 28,400 16,700 10,600 12,900 13,300 6,100 4,520 4,920 8 7,200 4,950 26,400 24,200 *26,700 16,600 10,700 12,500 15,400 6,280 4,600 5,080 9 7,020 4,930 10,400 20,400 25,800 17,900 10,400 12,400 15,800 5,900 4,580 5,050 10 7,150 4,850 15,200 20,100 25,600 17,800 10,200 12,400 *17,200 5,580 4,600 *5,020 11 6,250 4,910 14,800 21,100 29,200 16,800 10,600 12,800 17,800 5,100 4,480 4,980 12 6,120 5,530 14,700 27,200 52,200 15,900 10,600 15,100 15,300 5,050 4,480 5,280 13 6,220 *6,850 12,800 38,300 57,700 14,900 10,300 12,600 15,400 5,000 4,420 6,050 14 6,650 14,100 11,200 41 , 700 42,000 14,100 10,200 12,400 12,000 4,780 4,380 6,650 15 7,500 17,700 9,570 36,100 45,500 15,000 10,300 11,500 10,700 4,750 4,580 6,650 16 6,800 15,200 *8,640 55,000 58,200 12,500 10,500 10,700 9,950 4,780 4,480 6.700 17 6,050 15,200 10,600 56,500 81,400 *1 1,800 12,400 10,100 9,980 4,980 4,580 6,620 18 5,800 12,200 15,700 44,500 79 900 11,400 18,600 10,100 8,840 5,100 4,520 6,520 19 5,450 11,900 21,800 44,200 57^800 11,200 22,300 10,500 8,080 5,100 4,350 6,480 20 5,290 11,500 45,500 37,300 51,400 *1 0,900 22,000 10,600 7,780 5,000 4,380 6,580 21 5,090 10,800 76,700 35,500 49,500 11,100 27,400 10,500 7,720 *4,980 4,350 6,580 22 5,070 10,200 101,000 50,500 46,700 11,600 55,100 9,680 7,820 5,000 4.520 6,380 23 4,750 9,600 84,400 26,40O 44,200 11,700 55,500 10,200 7,880 4,720 4,520 6,580 24 4,750 8,670 55,800 27,400 44,600 12,400 56,200 10,600 8,180 4,600 4,550 6,480 25 5,130 8,200 50,100 32,500 51,400 13,000 55,400 10,600 9,110 4,600 4,550 6,500 26 5,070 8,490 54,500 32,300 58,000 13,200 26,600 10,200 9,740 4,650 4,4SO 6,480 27 4,990 8,550 57,200 29,000 59,800 13,500 25,500 9,800 8,600 4,600 4,580 6,520 28 4,850 8,000 55,600 30,500 55,200 12,700 *20,800 9,950 8,100 4.500 4,750 6,400 29 4,830 6,950 65,600 58,700 _ 12,100 18,500 9,590 8,080 4,550 4,780 6,280 30 4,890 7,200 65,000 57,700 ------12,100 16,500 9,080 7,880 4,580 4,880 6,480 31 4,990 56,800 72,400 12,200 8j:48p. 4,550 5,050 Total 184,870 249,190 985,220 *1,115.8 *1,299.3 522,600 528,500 555,480 521,000 167,550 141,410 177,670 Cfsra - _ _ _ _ _ - _ In. - - - _ - _ _ _ _ - _ - Mean 5,964 8,306 51,780 55,950 46,400 16,860 17,610 11,470 10,700 5,598 4,562 5,922 Ac-ft 366,700 494,500 *1,954 *2,209 *2,577 *1,057 *1,048 705,100 656,700 331,900 280,500 352,400 Calendar year 1957: Max 101,000 Min 4,210 Mean 14,680 Cfsm 3.03 In. 41.18 Ac-ft 10,630,000 Water year 1957-58: Max 101,000 Min 4,320 Mean 16,560 Cfsm 3.42 In. 46.46 Ac-ft 11,990,000 Discharge measurement made on thia day. * Expressed in thousands. WILLAMETTE RIVER BASIN 137

1780. North Santiam River below Boulder Creek, near Detroit, Oreg.

Locatlpn.--Lat 44 042'25", long 122°06'00", in SE£NWij sec. 17, T. 10 S., R. 6 E., on right bank half a mile downstream from Boulder Creek and 3 miles southeast of Detroit. Drainage area. 216 sq mi. Records available. January 1907 to October 1909, October 1928 to September 1958. Monthly discharge only January 1907, published in WSP 1318. Prior to October 1952, published as "at Detroit." Gage.--Water-stage recorder. Datum of gage is 1,590.07 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Jan. 24, 1907, to Oct. 31, 1909, staff gage at site 12 miles downstream and Oct. 1, 1928, to June 30, 1932, at site 2| miles down stream, at different datums. July 1, 1932, to Sept. 30, 1952, water-stage recorder at site 2 miles (revised) downstream at datum 114.39 ft lower. Average discharge.--32 years, 999 cfs (723,200 acre-ft per year). Extremes. Maximum discharge during year, 5,900 cfs Dec. 20 (gage height, 6.37 ft); minimum, 375 cfs Nov. 6-10 (gage height, 2.53 ft). 1907-9, 1928-58: Maximum discharge, 20,300 cfs Dec. 28, 1945 (gage height, 11.24 ft, site and datum then in use); minimum, 250 cfs Sept. 13, 1909 (gage height, 0.40 ft, site and datum then in use). Remarks. Records excellent. Slight diurnal fluctuation caused by powerplant at Idanha. No diversion above station. Revisions (water years).--WSP 814: Drainage area at former site. WSP 1248: 1931,

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 2.5 360 4.0 1,57O 3.0 650 5.0 3,01O 3.5 1,050 6.0 5,000 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 416 405 525 1,270 2,O4O ,,460 811 1,270 1,160 *728 537 465 2 477 395 630 1,160 1,790 ,340 811 1,280 1,10O 735 537 465 3 507 385 585 1,06O 1,610 ,240 772 1,29O 1,O20 720 537 460 4 47? 385 543 987 1,470 ,150 758 1,300 978 713 525 454 5 465 385 531 934 1,430 ,O90 742 1,340 1,020 706 513 454 6 448 38O *962 884 1,37O 1,O3O 735 1,330 1,350 706 519 454 7 443 375 2,920 875 1,460 969 735 1,300 i;280 728 513 454 8 443 375 1,940 875 1,500 952 742 1,390 1,160 699 519 454 9 438 375 1,37O 843 1,590 9OO *772 1,500 1,110 671 513 460 10 416 395 1,150 892 1,760 875 909 1,550 1,04O 650 513 460 11 405 443 978 1,110 1,8OO 843 952 1,570 978 644 513 448 12 4O5 639 875 1,700 2,340 827 978 1,390 987 637 507 454 13 460 1,210 795 1,590 2,400 803 1,O50 1,230 952 630 5O1 495 14 465 943 803 1,480 2,120 780 1,060 1,170 9OO 618 495 495 15 426 758 780 *2,210 2,730 750 1,050 1,230 884 611 *495 483 16 416 650 78O 2,02O 4,47O 735 1,160 1,340 892 604 495 465 17 405 585 827 2,81O 3,810 728 2,OOO 1,430 900 604 501 465 18 4OO 657 884 2,44O 3,430 728 2,180 1,530 892 6O4 501 454 19 395 713 2,OOO 1,950 2,86O 7O6 2,380 1,54O 884 598 489 465 20 395 637 «4,5OO 1,64O 2,540 720 4,460 1,520 884 585 483 454 21 39O 585 3,730 1,450 2,210 758 4.56O *1,49O 875 579 483 46O 22 410 555 2,340 1,260 2,O20 780 3,34O 1,580 843 579 477 46O 23 421 525 1,700 1,350 2,150 780 2,540 1,840 827 567 471 454 24 421 525 1,640 1,700 2,360 835 2,040 1,620 1,050 561 471 454 25 426 525 2,O7O 1,650 *2,73O 859 1,750 1,440 952 555 477 454 26 426 525 2,52O 1,480 2,24O 851 1,550 1,46O 835 555 471 448 27 416 513 2,050 1,420 1,880 827 1,390 1,460 811 555 465 448 28 41O 519 2,34O 2,260 1,63O 827 1,280 1,320 795 561 460 443 29 *410 495 2,11O 3,240 - 819 1,250 1,170 742 561 Ir? 438 30 410 489 1,7OO 2,940 811 1,22O 1,080 742-. t n 549 471 432 31 410 1,440 2,460 811 1,180 537 465 Total 13,252 16,346 48,018 49,94O 61,740 27,584 45,977 43,14O 28,843 19,350 15,394 13,749 Mean 427 545 1,549 1,611 2,205 89O 1,533 1,392 961 624 497 458 Cfsm 1.98 2.52 7.17 7.46 10.2 4.12 7.10 6.44 4.45 2.89 2.30 2.12 In. 2.28 2.81 8.27 8.6O 1O.63 4.75 7.92 7.43 4.97 3.33 2.65 2.37 Ac-ft 26,28O 32,42O 95,240 99,05O 122,500 54,710 91,19O 85,570 57,210 38,380 30,530 27,270 Calendar year 1957: Max 6,320 Mln 375 Mean 957 Cfsm 4.43 In. 60.17 Ac-ft 693,100 Water year 1957-58: Max 4,56O Mln 375 Mean 1,050 Cfsm 4.86 In. 66.01 Ac-ft 76O,4OO Peak discharge (base, 3,2OO cfs).--Dec. 7 (3 a.m.) 3,23O cfs (5.13 ft); Dec. 20 (6 to 7 p.m.) 5,900 cfs (6.37 ft); Jan. 29 (l p.m.) 3,880 cfs (5.48 ft); Feb. 16 (5:30 a.m.) 4,860 cfs (5.94 ft); Apr. 20 (9 p.m.) 5,860 cfs (6.35 ft).______* Discharge measurement made on this day.

534540 O -60 -10 138 WILLAMETTE RIVER BASIN

1790. Breitenbush River above Canyon Creek, near Detroit, dreg.

Location. Lat 44°45'10", long 122°07'40", in SE^NE-f see. 36, T. 9 S., R. 5 E., on left bank 600 ft upstream from Canyon Creek and Ij miles northeast of Detroit. Drainage area. 106 sq mi. Records available. June 1932 to September 1958. Prior to October 1952, published as "above French Creek, near Detroit." ;e. Water-stage recorder. Datum of gage is 1,573.95 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Prior to Oct. 1, 1952, at site 0.2 mile down stream at datum 13.46 ft lower. Average discharge. 26 years, 570 efs (412,700 aere-ft per year). Extremes. Maximum discharge during year, 5,200 cfs Apr. 20 (gage height, 8.23 ft); mini mum, 118 efs Sept. 30. 1932-58: Maximum discharge, 11,600 cfs Dec. 28, 1945 (gage height, 11.86 ft, site and datum then in use); minimum, 87 cfs Sept. 2, 1940 (gage height, 0.36 ft, site and datum then in use). Remarks. Records excellent. No regulation or diversion above station. Revisions (water years). WSP 1044: 1943(M). WSP 1248: 1947.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 2.5 120 5.0 1,330 2.7 157 7.0 3,540 3.0 237 8.0 4,880 4.0 645 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec . Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 132 135 260 718 1,300 766 403 628 634 *294 162 132 2 166 132 392 634 1,060 684 400 650 601 294 159 130 3 194 128 326 565 915 618 382 678 513 291 359 130 4 185 127 288 518 850 560 372 689 490 298 157 130 5 175 125 263 486 850 536 358 700 580 508 155 128 6 166 123 1,410 464 832 495 347 672 748 302 155 127 7 168 122 3,060 450 901 477 344 640 634 291 155 125 8 168 120 1,580 446 971 450 344 730 540 277 153 123 9 168 T20 *936 434 1,020 430 *350 796 522 260 153 123 10 162 130 730 504 1,190 410 482 802 490 247 151 123 11 153 210 590 778 1,110 396 500 808 468 244 147 *123 12 155 620 508 1,430 1,790 382 504 662 446 237 145 125 13 254 1.450 459 1,190 1,760 372 555 550 414 237 145 147 14 277 826 454 1,050 1,400 361 555 522 414 222 143 149 15 T96 555 414 *2,050 1,960 347 522 596 418 216 *143 T49 16 166 414 426 1,600 2.650 336 550 730 446 207 139 137 17 155 344 500 2,130 2,220 336 1,070 772 464 204 137 137 18 149 382 560 1,650 2,110 340 1,170 874 450 204 137 132 19 141 434 2,150 1,230 1,690 336 1,520 880 442 199 135 135 20 137 364 *3.570 985 1,410 354 4,090 850 442 194 135 134 21 135 312 2,380 820 *1,190 403 3,200 *850 438 188 135 147 22 164 280 1,400 700 1,080 410 2,080 862 414 185 134 141 25 166 263 971 814 1,100 414 1,480 915 406 183 132 137 £4 159 254 1,070 1,130 1,310 450 1,150 772 450 180 132 134 25 178 247 1,610 1,120 1,590 468 922 689 406 178 132 137 26 188 250 1,980 985 1,290 464 802 778 372 175 132 132 27 164 234 1,370 894 1,020 442 712 778 368 173 130 127 28 153 234 1,670 1,710 856 434 645 689 340 171 T32 123 29 *145 207 1,470 2,510 - 426 606 590 316 168 139 120 30 143 202 1,060 2,000 414 606 550 305 166 139 T20 31 139 826 1,610 403 650 164 135 Total 5,201 9,344 34,483 33, 405 37,425 13,714 27,021 22,352 13,971 6,957 4,437 3,957 Mean 168 311 1,112 1,078 1,337 442 901 721 466 224 143 132 Cfsm 1.58 2.93 10.5 10.2 12.6 4.17 8.50 6.80 4.40 2.11 1.35 1.25 In. 1.82 3.28 12.10 11.72 13.13 4.81 9 -.48 7.84 4.90 2.44 1.56 1.39 Ac-ft 10,320 18,530 68,400 66,260 74,230 27,200 53, 600 44,330 27,710 13,800 8,800 7,850 Calendar year 1957: Max 4,820 Min 116 Mean 516 Cfsm 4.87 In. 66.01 Ac-ft 373,300 Water-year 1957-58: Max 4,090 Mln 120 Mean 582 Cfsm 5.49 In. 74.47 Ac-ft 421,000 Peak discharge (base 4,000 cfs). Dec. 6 (12 p.m.) 4,150 cfs (7.47 ft); Dec. 19 (12 p.m.) 4,310 cfs (7.59 ft ; Apr. 20 (5:30 p.m.) 5,200 cfs (8.23 ft). * Discharge measurement made on this day. WILLAMETTE RIVER BASIN 139

1805. Detroit Reservoir near Detroit, Oreg.

Location. Lat 44°43'20", long 122°15'20", in NW£ sec. 7, T. 10 S., R. 5 E., in control house near right abutment of Detroit Dam and 5 miles west of Detroit. Drainage area. 437 sq mi. Records available.--January 1953 to September 1958. Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Corps of Engineers). Extremes. Maximum contents during year, 454,100 acre-ft June 8 (elevation, 1,568.78 ft); minimum, 154,800 acre-ft Jan. 10 (elevation, 1,449.90 ft). 1953-58- Maximum contents, 455,900 acre-ft July 23, 1956 (elevation, 1,569.29 ft); minimum since first filling, 137,500 acre-ft Jan. 31, 1957 (elevation, 1,439.70 ft). Remarks . Reservoir is formed by concrete, gravity-type dam with six 42- by 28-foot con- EroT gates. Length of dam is 1,580 ft; built by Corps of Engineers. Storage began in January 1953. Total capacity is 454,900 acre-ft and usable capacity is 340,200 acre-ft between elevation 1,425.0 (proposed lower limit of operation) and 1,569.0 ft (top of spillway gates). Reservoir used for flood control, power development, irrigaj tion, improvement of navigation, pollution abatement, and other purposes. Capacity table computed by Corps of Engineers. Figures given herein represent total contents.

Capacity table, water year 1957-58 (elevation, In feet, and total contents, In acre-feet)

1.449 153,300 ,490 231,800 1,540 359,600 1.450 155,000 1,500 254,500 1,550 391,000 1,460 172,600 1,510 278,800 1,560 424,000 1,470 191,000 1,520 304,200 1,570 458,400 1,480 210,600 1,530 330,800 Total contents, in acre-feet, at 12 p.m., water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 356,700 244,200 177,500 231,000 218,800 283,100 327,700 393,300 441,300 444,100 421,600 402,500 2 353,500 243,000 173,700 211,200 216,400 285,600 328,300 394,500 443,100 444,300 421,000 401,800 3 350,300 242,800 169,300 199,200 212,900 287,600 329,400 395,900 444,600 444,500 420,500 400,900 4 347,000 240,600 164,400 192,800 208,500 289,900 331,700 397,200 445,700 444,800 419,900 400,100 5 343,700 236,900 157,000 186,100 204,300 292,300 332,800 400,000 447,300 445,000 419,400 399,500 6 342,900 232,100 164,000 179,100 199,600 294, 300 333,600 400,400 450, 600 445,200 418,900 398,800 7 339,100 227,200 182,700 171,700 197,300 296,100 334,600 400,900 453,200 445,200 418,400 398,000 8 334,700 222,300 192,000 168,200 200,300 297,900 334,600 401,500 453,600 445,200 418,000 397,100 9 328,300 220,700 192,400 160,900 203,900 299,500 335,500 402,400 453,500 445,200 417,400 396,400 10 322,600 219,700 191,700 154,900 206,700 300,800 337,300 402,100 453,600 445,100 418,000 395,600 11 316,300 218,900 190,200 155,900 209,300 302,000 339,600 402,000 453,300 444,900 417,600 394,900 12 311,800 217,800 188,000 161,200 215,900 303,100 342,000 401,000 449,900 444,800 417,200 394,100 13 308,400 223,400 185,500 164,200 219,100 304,100 344,900 402,000 447,200 444,700 416,600 393,600 14 303,200 225,400 182,900 163,800 220,300 304,800 347,300 404,100 447,200 444,500 415,800 393,500 15 298,000 225, 700 180,100 168,800 232,000 305,600 349,600 405,800 447,000 444,400 414,000 392,500 16 292,600 226,400 177,400 169,900 253,600 306,300 352,400 408,200 445,900 444,400 413,300 391 , 200 17 287,300 227,400 175,300 178,700 266,500 307,200 360,700 409,400 445,100 444,500 412,600 388,200 18 282,600 224, 700 173,800 183, 700 274,900 307,800 368,400 410,000 444, 500 444,700 411,600 385,100 19 279,400 221,500 188,700 182,500 277,400 308,600 378,900 410,800 444,000 444,900 411,000 382,100 20 276,300 217,700 218,800 179,500 273,800 309,400 404,100 412,300 443, 700 445,100 410,300 378,800 21 271,100 213,300 239,000 175,300 268,800 310,700 421,300 414,900 444,500 445,100 409,700 375,600 22 267,800 208,600 247,300 170,000 265,900 312,000 424,000 417,900 445,200 445,000 409,000 372,300 23 265,200 206, 700 249,000 171,500 265,800 313,500 422,500 412,400 445,000 443,700 408,400 368,900 24 261,700 204,700 247,900 173,000 268,800 314,700 415, 600 423,500 445,500 440,800 407,800 365,500 25 259,300 199,600 251,900 172,300 272,400 316,600 409,100 425,200 445,000 437,900 407,100 363,000 26 257,000 194,100 263,600 170,500 274,300 318,500 399,600 428,000 443,800 435,400 406,400 359,700 27 254,400 188,800 264,400 166,600 275,800 320,000 392, 700 430,900 443,000 432,700 405,800 356,700 28 252,200 186,500 270,600 174,400 280,000 321,000 390,400 433,400 443,500 430,100 405,100 354,000 29 249,500 181,500 272jlOO 190,800 - 323,000 391,000 435,200 443,900 427,500 404,600 351 , 400 30 247,800 179,200 266,600 203,100 325,000 392,200 436,800 444,200 424,500 404,000 348.500 31 246,100 250,100 213,900 325,900 439,100 423,000 403,200 1,496.34 1,463.65 1,498.09 1,481.64 1,510.50 1,528.21 1,550.37 1,564.44 1,565.93 1,559 . 70 1,553.73 1,536.20 81 -114,500 -66,900 +70,900 -36,200 +66,100 +45,900 +66,300 +46,900 +5,100 -21,200 -19,800 -54, 700 Calendar year 1957...... * +89,700 Water year 1957-58...... * -12,100 t Elevation, in feet, at end of month. * Change In contents, in acre-feet. WILLAMETTE RIVER BASIN

1815. North Santiam River at Niagara, Oreg. Location. Lat 44°45'10", long 122°17'50", in NE^NE^ sec. 34, T. 9 S., R. 4 E., on left bank 0.8 mile downstream from Big Cliff Dam and 2.1 miles east of Niagara. Drainage area. 453 sq mi. Records available.--December 1908 to January 1920, October 1921 to March 1922, October 1938 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Published as North Fork of Santiam River near Niagara prior to October 1913, and as "above Mayflower Creek, near Detroit" October 1938 to September 1952. Gage.--Water-stage recorder. Datum of gage is 1,093.78 ft above mean sea level (Bureau of Public Roads bench mark). Dec. 1, 1908, to May 31, 1922, staff gage at site 2| miles downstream at different datum. Oct. 1, 1938, to Nov. 16, 1939, staff gage and Nov. 17, 1939, to Sept. 30, 1952, water-stage recorder, at various sites and datums about 3j miles upstream. Average discharge.--30 years (1909-19, 1938-58), 2,327 cfs (1,685,000 acre-ft per year), adjusted for storage. Extremes. Maximum discharge during year 13,100 cfs Jan. 2 (gage height, 8.61 ft); mini mum, 754 cfs July 18; minimum daily, 810 cfs July 18. 1908-22, 1938-58: Maximum discharge, 63,200 cfs Nov. 22, 1909 (gage height, 16.4 ft, from floodmark, site and datum then in use), from rating curve extended above 35,000 cfs; minimum, 87 cfs Nov. 8, 1953; minimum daily, 430 cfs Sept. 23-25, 1915. Remarks. Records excellent. Flow completely regulated by Detroit Reservoir since 1953 (see preceding page). No diversion above station. Revisions (water years). WSP 1288: 1914-18, 1920.

Rating table, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) 2.5 810 6.0 5,750 3.0 1,210 8.0 11,000 4.0 2,320 9.0 14,500 5.0 3,830 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dee. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2,620 1,430 2,290 12,700 2,940 1,630 1,100 2,010 ,100 *1,040 1,230 1,030 2 2,580 1,360 3,330 13,000 5,460 1,580 1,270 2,230 ,130 1,160 1,060 1,010 3 2,670 1,160 3,560 8,290 5,500 ,590 952 1,970 ,090 1,160 1,060 1,010 4 2,620 1,470 3,590 5,460 5,500 ,350 1,010 1,840 ,200 1,020 1,040 1,020 5 2,590 2,270 5,060 5,460 5,520 ,060 1,010 1,700 ,O9O 984 1,020 1,040 6 1,510 3,020 *2,020 5,400 *5,420 ,010 976 2,380 ,320 928 1,020 1,040 7 2,370 3,140 1,550 5,160 *4,670 ,050 1,000 2,360 ,140 928 1,040 1,020 8 3,140 3,110 1,210 3,930 2,060 ,160 *1,000 2,480 ,170 1,020 1,040 1.000 9 3,870 1,720 2,640 5,380 2,290 ,200 1,020 2,510 ,320 1,040 1,010 1,020 10 3,880 1,610 3,270 5,160 3,100 ,020 1,060 2,930 ,840 1,060 1,040 1,030 11 3,830 1,560 3,120 3,040 3,OOO ,200 1,190 5.250 ,150 1,120 1,010 1,030 12 3,000 2,400 3,120 3,100 3,300 ,160 1,040 5,080 ,590 1,040 1,070 1,040 13 3,000 2,550 3,O8O 3,470 4,900 ,000 1,060 1,840 ,890 1,050 1,060 1,050 14 3,690 2,440 3,160 4,430 4,860 ,060 1,060 1,270 ,620 1,040 1,040 1,060 15 3,490 2,230 3,120 *4,920 2,610 ,020 1,040 1,200 ,640 956 1,040 1,100 16 3,510 1,480 3,100 5,340 1,060 952 1,030 1,400 ,440 880 1,020 1,650 17 3,610 1,430 3,040 3,930 1,970 952 1,150 2,070 ,890 845 1,040 2,220 18 3,060 2,580 3,190 3,900 3,970 944 1,330 2,370 ,870 810 *1,020 2,190 19 2,320 3,730 2,290 5,340 5,000 1,030 1,040 2,520 ,820 824 1,010 2,330 20 2,320 3,610 1,220 5,340 6,860 1,050 1,720 2,150 ,800 851 1,010 2.410 21 2,880 3,520 1.110 5,360 7,000 1,040 2,900 *1,590 ,040 851 1,040 2,400 22 2,560 3,580 1,640 5,080 5,540 1,020 6,760 1,220 ,030 852 1,020 2,400 23 2,010 2,320 3,440 3,040 4,320 1,040 6,500 1,550 ,470 1,550 1,020 2,350 24 2,550 2,190 5,310 3,850 3,540 1,230 8.200 1,570 ,590 2,330 1,030 2,370 25 2,020 3,440 4,800 4,600 *4,450 1,120 7,250 1,610 ,870 2,320 1,010 2,290 26 1,990 4.250 2,460 4,770 4,260 1,110 8,200 1,470 ,050 2,260 1,030 2,130 27 2,030 3,960 5,380 5,280 3,280 1,040 6,270 1,070 ,840 2,240 1,020 2,080 28 *2,000 2,410 3,900 2,770 1,720 1,060 4,320 1,080 ,060 2,260 1,020 2,090 29 2,000 3,300 5,180 1,040 1,030 2,200 1,100 976 2,230 1,020 2,020 30 1,560 2,580 7,020 1,870 1,020 1,990 1,070 1,050 2,220 1,040 2,110 31 1,510 11,400 1,070 1,160 ------1,100 1,970 1,030 -

Tote] 82,790 75,830 108,600 151,480 114,100 34,888 76,648 57,550 50,086 40,759 32,160 48,540 Mean 2,671 2,528 3,503 4,886 4,075 1,125 2,555 1,856 1,670 1,315 1,037 1,618 Ac-f1 164,200 150,400 215,400 300,500 226,300 69,200 152,000 114,100 99,540 80,840 65,790 96,280

Adjusted for change In contents In Detroit Reservoir Mean 808 1,405 4,656 4,298 5,265 1,872 3,669 2,618 1,754 970 715 699 Cfsm 1.78 5.10 10.3 9.49 11.6 4.15 8.10 5.78 3.87 2.14 1.58 1.54 In. 2.06 5.46 11.85 10.94 12.10 4.76 9.04 6.66 4.32 2.47 1.82 1.72 Ae-ft 49,700 85,500 286,300 264,500 292,400 115,100 218,300 161,000 104,400 59,640 45,990 41,580

Calendar year 1957: Max 11. 400 Min 727 Mean 2, 013 Ac -ft 1,457 ,000 Water year 1957-58: Max 15, 000 Min 810 Mean 2, 393 Ac -ft 1,732 ,000

Adjusted Calendar year 1957: Mean 2, 157 Cfsm 4.72 In. 64. 03 Ac -ft 1,547 ,000 Water year 1957-58: Mean 2, 376 Cfsm 5.25 In. 71. 20 Ac -ft 1,720 ,000 Discharge measurement made on this day. WILLAMETTE RIVER BASIN 141

1825. Little North Santiam River near Mehama, Oreg.

Location.--Lat 44°47'30", long 122°34'40", in NW£ sec. 16, T. 9 S., R. 2 E., on left bank 2 miles east of Mehama and 2 miles upstream from mouth. Drainage area. 110 sq mi. Records available.--October 1931 to September 1958. Records for July to September 1931 at site 4 miles upstream not equivalent owing to difference in drainage areas. Gage. Water-stage recorder. Datum of gage is 655.41 ft above mean sea level, datum of 1929. Prior to June 1, 1948, staff or wire-weight gages at about same site and datum. Average discharge. 27 years, 773 cfs (559,600 acre-ft per year). Extremes.--Maximum discharge during year, 12,500 cfs Dec. 6 (gage height, 11.65 ft); min imum, 24 cfs Sept. 7. 1931-58: Maximum discharge, 19,900 cfs Dec. 28, 1945 (gage height, 15.20 ft), from rating curve extended above 13,000 cfs by logarithmic plotting; minimum, 21 cfs Sept. 11, 1934, Sept. 27, 28, 1938, Sept. 1, 1340. Remarks. Records excellent. No regulation or diversion above station. Revisions (water years). WSP 754: 1932. WSP 1218: 1934, 1936, 1949-50.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Nov. 12 Nov. 13 to Sept. 30 2.4 4.0 375 22 4.5 650 2.7 4.5 600 38 5.0 960 3.0 106 5.0 910 73 6.0 1,810 3.5 215 6.0 1,810 122 8.0 5,130 3.5 240 10.0 9,080 4.0 420 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 37 138 410 1,000 2,130 834 540 712 261 294 53 32 2 67 126 1,270 876 1,550 754 515 670 344 *25$ 51 29 3 124 120 808 808 1,340 660 496 635 291 228 49 28 4 148 110 620 712 1,160 600 472 580 267 225 50 28 5 136 108 *505 670 1,120 590 456 555 258 198 49 27 6 153 98 4,160 695 1,060 545 420 525 538 178 47 26 7 200 93 7,320 690 1,060 515 408 484 645 165 46 25 8 185 92 2,640 685 1,130 496 *408 505 595 154 46 26 9 190 90 1,500 690 1,140 488 440 525 520 142 46 26 10 144 92 1,080 730 1,570 468 751 500 456 136 44 27 11 119 256 820 1,400 1,410 456 802 500 388 126 40 29 12 117 1,270 685 2,260 2,900 436 700 428 360 118 38 *29 13 658 4.350 590 1,770 2,930 416 724 352 326 113 38 46 14 710 2,230 615 1,760 1,850 400 724 312 294 108 *37 72 15 371 1,560 590 5.800 2,870 380 615 312 261 102 36 115 16 255 918 565 *2,130 4.070 368 1,080 368 240 98 35 79 17 200 690 625 3,490 2,800 37^ 2,660 388 220 94 34 80 18 166 795 876 2,120 2,340 408 2,110 376 202 94 34 65 19 144 1,040 6,730 1,410 1,630 412 3,120 360 190 93 33 65 20 128 742 8,140 1,140 1,310 460 8.820 *336 180 88 32 94 21 115 580 *3,980 988 1,090 580 4,450 330 168 84 32 109 22 128 484 2,230 827 967 590 2,960 326 158 82 31 132 23 238 432 1,520 912 1,010 615 2,050 330 151 79 29 94 24 190 380 2,420 1,740 1,240 742 1,560 294 245 74 29 78 25 210 352 3,420 1,720 1,820 736 1,260 264 312 70 28 88

26 318 348 3,540 1,390 *1,480 778 1,050 243 232 66 27 111 27 267 316 2,360 1,160 1,200 700 890 284 243 64 2T 88 28 *215 330 3,630 2,040 995 650 802 258 305 60 28 73 29 180 284 2,500 3,020 - 615 760 225 267 58 33 64 30 166 270 1,620 2,710 605 748 2~T5202 305 56 39 58 31 151 1,240 3,000 550 34 Total 6,430 18,472 69,009 48,343 47,172 17,223 42,791 12,394 9,222 3,759 1,175 1,843 Mean 207 616 2,226 1,559 1,685 556 1,426 400 307 121 37.9 61.4 Cfsm 1.88 5.60 20.2 14.2 15.3 5.05 13.0 3.64 2.79 1.10 0.345 0.558 In. 2.17 6.25 23.33 16.34 15.95 5.82 14.47 4.19 3.12 1.27 0.40 0.62 Ac-ft 12,750 36,640 136,900 95,890 93,560 34,160 84,870 24,580 18,290 7,460 2,330 3,660 Calendar year 1957: Max 8,140 Mln 24 Mean 701 Cfsra 6.37 In. 86.48 Ac-ft 507,300 Water year 1957-58: Max 8,820 Min 25 Mean 751 Cfsra 6.92 In. 93.93 Ac-ft 551,100 Peak discharge (base, 8,200 cfs). Dec. 6 (12 p.m.) 12,500 cfs (11.65 ft); Dec. 19 (9 p.m.) 12,400 cfs (11.58 ft); Apr. 20 (8 a.m.) 10,500 cfs (10.59 ft).______* Discharge measurement made on this day. 142 WILLAMETTE RIVER BASIN

1830. North Santiam River at Mehama, Oreg.

Location. Lat 44°47'20", long 122°37'00", in NW£ sec. 18, T. 9 S., R. 2 E., on right bank 300 ft downstream from highway bridge at Mehama and 0.5 mile downstream from Little North Santiam River. Drainage area. 665 sq mi. Records available. July 1905 to March 1907, October 1910 to September 1914, September 1921 to September 1958. Monthly discharge only September 1921, published in WSP 1318. Prior to October 1913, published as North Fork of Santiam River at Mehama. Gage. Water-stage recorder. Datum of gage is 602.49 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to June 15, 1933, staff gage at site 100 ft upstream at same datum. Average discharge. 42 years (1905-6, 1910-14, 1921-58), 3,314 cfs (2,399,000 acre-ft per year). Extremes. Maximum discharge during year, 17,700 cfs Dec. 19 (gage height, 8.14 ft); mini mum, 907 cfs July 18; minimum daily, 952 cfs July 19, 20. 1905-7, 1910-14, 1921-58: Maximum discharge, 76,600 cfs Dec. 28, 1945 (gage height, 15.37 ft), from rating curve extended above 36,000 cfs on basis of slope-area measure ment of peak flow; maximum gage height, 17.5 ft Nov. 20, 1921, from graph based on gage readings, and Jan. 6, 1923, from floodmark, at site then in use; minimum discharge, 400 cfs Sept. 29, Oct. 13, 1934; minimum daily, 420 cfs Sept. 18, 1924. Remarks'. Records excellent. Flow regulated by Detroit Reservoir since 1953 (see p. 139). No diversion above station. Revisions (water years).fe: WSP 634: Drainage area. WSP 739: 1922-23(M). WSP 1044: 1943.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Apr. 20 Apr. 21 to Sept. 3O 2.4 1,230 2.1 880 3.0 1,930 3.0 1,930 4.0 3.5OO 5.O 5,7OO Note. Same as 6.0 8,620 preceding table 8.0 17,OOO above 3.O ft. Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2,580 1,610 2.710 14.50O 5,54O 2.960 1,860 2,930 1,420 1,520 1,470 1,O50 2 2,680 1,470 4,480 14,500 8,010 2,740 2,14O 3,060 1,550 *1,560 1,150 1,O2O 3 2.8OO 1.52O 4,280 1O,6OO 7,59O 2,62O 1,74O 2.8OO 1,470 1.52O 1,130 1,020 4 2,760 1,490 4,090 a7,50O 7,290 2,360 1,720 2,580 1,6OO 1,380 1,110 1.010 5 2,720 2,130 *5,340 a7,OOO 7,240 2,100 1,690 2,440 1,440 1,290 1,09O 1,040 6 1,84O 2,900 6,980 a7,OOO 7.O9O 1,850 1,62O 2,960 2,150 1,210 1,090 1,O4O 7 2,390 3.O6O 1O,800 a7,OOO 6,45O 1,860 1,600 2,95O 2, ISO 1,160 1,080 1,O2O 8 3,180 3,20O 4,630 a5, 500 3,740 1,960 *1,630 3,10O 2,800 1,240 1,090 1,010 9 3,950 1,85O 4,3OO a7,OOO 3,870 2,040 1,690 3,130 3,170 1,240 1,080 1,O2O 10 3,950 1,740 4,590 a7,OOO 5,090 1,840 2,1OO 3.5OO 2,650 1,280 1,070 1,030 11 3,890 1,84O 4.13O a5,5OO 4,86O 1,900 2,260 5.780 2,68O 1,320 1,O5O 1,03O 12 3,240 3,560 3,910 a6,5OO 6,920 1,920 2,010 3,660 5,76O 1,240 1,06O *1,O4O 13 3,660 7.580 3,740 a7,OOO 8,820 1,680 2,040 2,520 5.89O 1.19O *1,060 1,070 14 4,350 4,86O 3,830 a7,50O 7,740 1,700 2,O40 1,750 2,270 1.19O 1,060 1.12O 15 3,850 3,680 3,760 a9,5OO 7,410 1,640 1,9OO 1,620 2,OOO 1,120 1,020 1,170

16 3,720 2,630 3,720 *8,430 6,940 1,560 2,450 1,760 2,720 1,O50 1.O2O 1,510 17 3,700 2,240 3,740 9,240 5,540 1,550 4,310 2,360 2,59O 1,OOO 1,020 2,280 18 3,300 3,11O 4,280 6,930 7,150 1,600 4,180 2,720 2,210 970 1,020 2,270 19 2,580 4,70O 11,10O 7,710 7,38O 1,66O 4,750 2,880 2,140 952 1,020 2,560 20 2,460 4,3OO 15.8OO 7,260 8,790 1,750 11,800 *2,56O 2, ISO 952 1,O1O 2,480 21 2,88O 4.O50 7,440 6,970 8^690 1,86O 8,420 ,920 1,450 961 1,05O 2.510 22 *2,74O 3,970 4,95O 6,460 7, ISO 1,860 1O,9OO ,64O 1.280 970 1,05O 2,500 23 2,260 2,930 5,600 4.840 5,860 1,92O 9,300 ,760 1,550 1,360 1,O2O 2,450 24 2,630 2,520 8,520 6,060 5,260 2,240 1O,700 ,87O 2,OOO 2.440 1,O5O 2,450 25 2,320 3,480 1O.OOO 7,350 7,O60 2,270 9,26O ,93O 2,53O 2,400 1,O2O 2,440 26 2,300 4,350 6,970 6.8OO *6,770 2,260 9,910 ,800 2,380 2,390 1,O50 2,240 27 2,240 4, ISO 8,860 7,350 5,34O 2,100 7,8OO ,440 2,350 2,560 1,O50 2,150 28 2,200 2,88O 9,020 6,240 3.520 1,960 5,620 1,38O 1,720 2,560 1,030 2,180 29 2,140 3,390 8,820 5,690 - 1,940 3,6OO 1,580 1,420 2,550 1.O5O 2,14O 30 1.81O 2,880 9,060 6,350 1,860 3,060 1.300 1,570 2,530 1,050 2,180 31 1,670 13,400 5,920 1,970 1,360 2,210 1,050 Total 88,790 93,700 200,850 233,200 183,140 61,53O 134.1OO 72,84O 64,6OO 46,495 33,O7O 49,830 Mean 2,864 3,123 6,479 7,523 6,541 1,985 4,470 2,350 2,155 1,500 1,067 1,661 Ac-ft 176,100 185,900 398,400 462, 5OO 363,300 122,000 266,000 144,500 128,100 92.22O 65,590 98,84O Calendar year 1957 i Max 13.8OO Mln 808 Mean 2,975 Ac-ft 2,154,OOO Water year 1957-58: Max 14,5OO Mln 952 Mean 3,458 Ac-ft 2,503,OOO * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of recorded range In stage and records for nearby stations. WILLAMETTE RIVER BASIN 143

1850. South Santiam River below Cascadia, Creg.

Location. La t 44 023'35", long 122°30'35", In SE£ sec. 36, T. 13 S., R. 2 E., on right bank 100 ft downstream from bridge at Cascadia ranger station, half a mile downstream from Mouse Creek (corrected), half a mile upstream from Deer Creek, and 1? miles south west of Cascadia. All records computed are for site at gaging cable 0.7 mile upstream, above Mouse Creek. Drainage area. 174 sq ml at gaging cable. Records available. September 1935 to September 1958. Monthly discharge only for Septem- ber 1935, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 759.88 ft above mean sea level, datum of TT929, supplementary adjustment of 1947. Prior to Nov. 1, 1935, staff gage at same site and datum. Average discharge. 23 years, 814 cfs (589,300 acre-ft per year). Extremes. Maximum discharge during year, 17,800 cfs Dec. 20 (gage height, 15.12 ft); minimum, 46 cfs Sept. 8 (gage height, 1.56 ft). 1935-58: Maximum discharge, 26,800 cfs Dec. 11, 1956 (gage height, 19.35 ft), from rating curve extended above 14,000 cfs by logarithmic plotting; minimum, 23 cfs Dec. 1, 2, 1936 (gage height, 0.98 ft). Remarks. Records good except those for period of no gage-height record, which are fair. No regulation or diversion above station.

Rating table?, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 6 Dec. 7 to Apr. 20 Apr. 21 to Sept. 30 1.6 69 2.7 410 1.5 39 2.0 156 3.0 530 1.8 78 2.5 300 4.0 1,080 2.2 156 3.0 480 5.0 1,770 2.5 240 4.0 980 7.0 3,750 3.0 435 5.0 1,680 10.0 8,100 4.0 980 6.0 2,600 14.0 15,600 5.0 1,680 6.0 2,600 8.0 5,010 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 78 94 S50~360 1,350 2,220 1,150 570 812 404 303 96 60 2 207 88 1,210 1,770 984 575 764 480 289 92 57 3 276 88 500 1,070 1,520 876 545 728 462 296 91 55 4 288 84 400 948 1,320 770 514 686 458 268 89 54 5 249 82 380 882 1,240 *755 482 658 440 250 88 51 6 234 80 2,000 876 1.160 690 450 636 918 231 86 50 7 291 80 7,500 882 1,170 645 462 580 1.050 221 84 49 8 255 78 3,000 888 1,170 620 470 580 926 212 83 49-47 9 228 TS 1,500 882 1,260 595 490 580 794 203 81 10 182 88 1,100 942 1,590 580 755 565 680 *195 78 50 11 151 233 846 1,580 1,530 545 792 570 610 189 76 SO 12 138 720 700 2,710 2,280 514 750 502 590 181 75 50 13 292 2.520 595 *2 , 360 2,840 494 775 440 545 176 72 110 14 370 1,780 580 1,880 2,480 470 804 394 498 171 70 T33"147 15 238 1,140 518 2,430 5,310 450 710 394 448 166 68 16 210 766 530 2,040 7.700 434 906 426 408 156 67 105 17 179 574 700 4,030 4,120 434 2,010 430 374 154 67 99 18 161 685 1,090 2,970 2,930 446 2,240 426 350 154 65 83 19 146 815 5,500 2,010 2,120 442 2,320 408 334 149 »65 86 20 134 635 14.800 1,580 1,650 490 4,510 378 314 144 62 94 21 126 500 8,240 1,370 1,330 610 4,900 362 289 140 62 89 22 122 440 3,560 1,160 1,220 615 3,810 358 282"275 135 61 96 23 124 380 2,240 1,300 1,260 640 2,640 404 129 58 84 24 115 340 2,380 1,950 1,590 680 1,890 378 435 125 57 80 25 117 320 3,070 1,770 2,400 715 1,460 350 417 120 56 78 26 134 320 3,770 1,460 2,060 690 1,250 314 334 114 55 78 27 117 300 2,810 1,300 1,700 640 1,060 303 338 110 55 72 28 106 320 4,940 2,600 1,360 620 944 330 366 107 55 65 29 98 300 3,450 4.750 - 605 890 278 326 105 62 62 30 *96 280 2 250 3 "§90 620 848 264 326 99 75 60 31 96 lieao 3^040 34? 98 62 Total 5,574 14,008 81,589 58,210 60,300 19,404 40,822 14,640 14,471 5,390 2,213 2,243 Mean 180 467 2,632 1,878 2,154 626 1,361 472 482 174 71.4 74,8 Cfsm 1.03 2.68 15.1 10.8 12.4 3.60 7.82 2.71 2.77 1.00 0.410 0.430 In. 1.19 2.99 17.44 12.44 12.89 4.15 8.73 3.13 3.09 1.15 0.47 0.48 Ac-ft 11,060 27,780 161,800 115,500 119,600 38,490 80,970 29,040 28,700 10,690 4,390 4,450 Calendar year 1957: Max 14,800 Mln 42 Mean 805 Cfsm 4.63 In. 62.78 Ac-ft 582,500 Water year1 1957-58: Max 14,800 Mln 47 Mean 874 Cfsm 5.02 In.in. 68.15 Ac-ftAc-rt 632,500632,&OO Peak dlschatarge (base, 5,300 cfs). Dec. 7 (about 2 a.m.) 10,800 cfs (11.5 ft); Dec. 20 (6 p.m.) 17,800 c;fs (15.12 ft); Dec. 28 (8 a.m.) 5,700 cfs (8.47 ft): Jan. 29 (l p.m.) 6.580 cfs (9.05 ft); ______(2:50Feb. 16 a.m.) 10,100 cfs (11.09 ft); Apr. 20 (10 p.m.) 6,790 cfs (9.18 ft).______* Discharge measurement made on this day. Note. No gage-height record Nov. 21 to Dec. 9; discharge estimated on basis of records for station at Waterloo, recorded lower limit of range In stage, and high-water mark In well. 144 WILLAMETTE RIVER BASIN

1865. Middle Santiam River at mouth, near Poster, Oreg.

Location.--Lat 44 0 25'25n , long 122°37'25", in NE£SE£ sec. 24, T. 13 S., R. IE., on right bank half a mile upstream from mouth and 2| miles northeast of Foster. Drainage area. 287 sq mi. Records available.--January 1951 to September 1958. Gage. Water-stage recorder. Datum of gage is 562.14 ft above mean sea level, datum of 1929 (Corps of Engineers bench mark). Prior to Oct. 24, 1952, staff gage at same site and datum. Average discharge. 7 years, 1,838 cfs (1,331,000 acre-ft per year). Extremes. Maximum discharge during year, 30,700 ofa Dec. 20 (gage height, 17.96 ft); minimum, 101 cfs Sept. 8, 9 (gage height, 0.78 ft). 1951-58: Maximum discharge. 41,000 cfs Dec. 11, 1956 (gage height, 20.25 ft); mini mum, 72 cfs Sept. 22-24, 1951 (gage height, 0.77 ft). During flood of Dec. 28, 1945, flow of 41,800 cfs occurred at former station upstream where drainage area ia 6 percent smaller. Remarks. Records excellent. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Apr. 20 Apr. 21 to Sept. 30 1.0 116 6.0 1,570 0.7 93 6.0 1,570 2.0 253 7.0 2,520 1.5 190 7.0 2,520 3.0 440 10.0 6,690 3.0 450 10.0 6,690 4.0 680 13.0 13,300 4.0 680 13.0 13,3OO 5.0 1,030 17.0 26,600 5.0 1,030 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 119 210 639 2,620 4,760 2 160 1,190 1,620 737 474 173 119 2 203 196 1,500 2,290 3,760 ^860 1,160 1,550 950 494 170 114 3 482 186 1,130 2,070 3,250 ,660 1,120 1,440 779 476 166 112 4 476 178 938 1,810 2, no ,490 1,070 1,560 680 442 166 110 5 444 170 807 1,660 2,630 * ,440 1,020 1,510 618 408 163 107 6 458 164 6,600 1,700 2,460 ,520 962 1,240 1,250 584 159 105 7 502 160 15,200 1,720 2,450 ,250 990 1,150 1,540 *365 155 105 8 474 156 5,370 1,750 2,450 ,220 990 ,150 1,600 345 153 101 9 468 153 3,260 1,770 2,450 1,170 1,050 ,150 1,220 351 153 102 10 338 166 *2,320 1,770 3,000 1,140 1,510 ,120 1,040 317 150 105 11 270 506 1,800 3,760 2,970 1,090 1,590 ,110 922 307 146 *105 12 251 2,230 1,470 5,900 4,950 1,050 1,450 ,010 846 295 143 104 13 802 6,570 1,260 4,840 5,850 1,010 1,470 870 767 283 140 243 14 982 4,250 1,250 *4,020 4,700 974 1,450 791 692 271 137 505 15 582 2,710 1,160 6,590 7,990 926 *1,270 770 632 261 134 298 16 428 1,730 1,150 4,940 12,200 878 1,740 814 590 255 152 212 17 344 1,280 1,430 7,220 7,370 902 4,820 814 542 250 131 197 18 296 1,560 2,170 5,500 5,780 1,010 4,840 794 498 247 128 172 19 265 1,940 12,500 3,870 4,520 1,010 5,240 767 482 242 *127 163 20 237 1,450 25,500 3,040 3,440 1,110 14.000 707 458 254 126 173 21 219 1,160 14,300 2,610 2,800 1,360 10,300 675 436 226 126 179 22 235 994 6,590 2,140 2,460 1,350 6,670 650 416 220 122 200 23 340 863 4,370 2,340 2,650 1,350 5,070 672 410 218 119 171 24 292 785 5,080 4,090 3,020 1,510 5,950 608 658 215 116 158 25 313 737 7,600 3,900 4,490 1,560 3,150 565 746 207 115 165 26 392 719 8,170 3,210 3,960 1,650 2,600 502 560 200 112 172 27 327 648 5,640 2,690 5,180 1,460 2,170 *510 530 196 TT2 156 28 284 668 8,600 5,230 2,580 1,580 1,910 555 588 190 112 145 29 255 585 6,400 7,950 - 1,550 1,760 486 526 185 127 135 30 *240 535 4,390 6, 990 1,550 1,670 448 498 179 145 127 31 225 3,300 6,190 1,250 504 177 127 Total 11,543 33,659 161,894 116,180 114,650 40,180 88,122 27,692 22,191 8,886 4,285 4,648 Mean 372 1,122 5,222 3,748 4,095 1,296 2,957 893 740 287 158 155 Cfsm 1.30 3.91 18.2 13.1 14.5 4.52 10.2 3.11 2.58 1.00 0.481 0.540 In. 1.50 4,36 20.98 15.05 14.86 5.21 11.42 3.59 2.88 1.15 0.56 0.60 Ac-ft 22,900 66,760 321,100 230,400 227,400 79,700 174,800 54,930 44,020 17,630 8,500 9,220 Calendar year 1957: Max 25,500 Mln 86 Mean 1,596 Cfsm 5.56 In. 75.48 Ac-ft 1,155,000 Water year 1957-58: Max 25,500 Mln 101 Mean 1,737 Cfsm 6.05 In. 82.16 Ac-ft 1,257,000 Peak-discharge (base, 12,000 cfs).--Dec. 6 (11:30 p.m.) 25,600 cfs (16.75 ft); Dec. 20 (5 p.m.) 30,700 cfs (17.96 ft); Feb. 16 (5:30 a.m.) 15,300 cfs (13.73 ft); Apr. 20 (8:30 p.m.) 16,900 cfs (14.50 ft).______* Discharge measurement made on this day. WILLAMETTE RIVER BASIN 145

1870. Wiley Creek near Foster, Oreg.

Location. Lat 44°22'20", long 122°37'20", in NE£ sec. 12. T. 14 S., R. 1 E., on right bank 0.4 mile downstream from Little Wiley Creek and 3f miles southeast of Foster. Drainage area. 52 sq mi, approximately. Records available. October 1947 to September 1958. . Water-stage recorder. Datum of gage is 718.( ft above mean sea level (Corps of ;ineers bench mark). Average discharge. 11 years, 236 cfs (170,900 acre-ft per year). Extremes. Maximum discharge during year, 4,820 cfs Dec. 20 (gage height, 7.77 ft, momentary backwater from debris); minimum, 9.0 cfs Sept. 8. 1947-58: Maximum discharge, 6,290 cfs Dec. 21, 1955 (gage height, 8.42 ft, momen tary backwater from debris); minimum, 5.6 cfs Nov. 26, 1952. Remarks. Records good. No regulation or diversion above station.

Hating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 20 Dec. 21 to Sept. 30 0.4 16 3.0 910 0.18 9.0 2.0 420 .7 40 4.0 1,670 .2 3.0 1,000 1.0 80 5.0 2,620 .5 30 4.0 1,750 1.5 196 7.0 5,030 1.0 100 5.0 2,700 2.0 378 1.5 225 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 26 20 73 355 698 2~78~323 167 157 94 74 22 13 2 58 18 107 303 545 173 144 122 7T 2T 12 3 59 18 84 256 455 242 164 133 133 63 20 12 4 51 17 74 225 375 210 157 122 127 58 20 12 5 47 17 70. 201 339 *213 142 116 108 52 20 11 6 54 17 328 195 288 189 135 110 182 50 20 10 7 60 16 973 187 288 181 133 100 195-222 *47 20 9.5 8 50 16 506 189 278 173 129 93 *46 20 9.0 9 41 L6 *318 184 299 173 131 87 170 45 20 97S 10 33 22 234 201 380 170 160 82 144 43 19 *11 11 29 72 185 455 380 160 154 84 133 40 18 11 12 28 151 156 787 586 152 147 80 162 38 18 11 13 71 442 134 680 698 142 154 72 135 36 17 29-34 14 88 465 129 *500 658 135 160 69 122 36 16 15 55 330 116 460 1,360 131 *142 65 108 34 16 26 16 43 208 127 420 1.750 124 201 63 98 32 16 24 17 37 153 214 951 986 127 478 58 87 32 16 26 18 34 150 420 698 658 129 525 56 79 34 16 18 19 31 150 1,750 495 495 129 416 53 74 32 *15 19 20 29 132 4,080 402 384 147 610 52 69 30 15 19

21 27 112 *2,430 347 315 175 716-764 51 65 29 15 20 22 25 97 1,000 284 278 173 50 59 29 13 20 23 25 88 704 398 3B~2~267 192 570 55 6T 28 13 17 24 25 78 752 550 213 445 63 124 26 13 16 25 27 70 925 *480 698 242 355 59 100 26 13 15

26 29 69 1,080 388 636 228 299 50 80 25 12"12 16 27 25 63 782 339 520 204 253 *50 91 24 15 28 22 72 1,150 625 393 187 216 78 95 23 12 13 29 22 61 865 1,280 - 184 192 53 82 22 13 13 30 *21 56 1,580 175 49 85 ?? 16 13 31 20 445 1,020 173 70 22 13 Total 1,192 3,196 20,809 15,235 15,389 5,677 8,463 2,424 3,408 1,169 510 484 Mean 38.5 107 671 491 550 183 282 78.2 114 37.7 16.5 16.1 Cfsm 0.740 2.06 12.9 9.44 10.6 3.52 5.42 1.50 2.19 0.725 0.317 0.310 In. 0.85 2.29 14.88 10.90 11.01 4.06 6.05 1.73 2.44 0.84 0.36 0.35 Ac-ft 2,360 6,340 41,270 30,220 30,520 11,260 16,790 4,810 6,760 2,320 1,010 960 Calendar year 1957: Max 4,080 Min 8.2 Mean 202 Cfsm 3.88 In. 52.71 Ac-ft 146,100 Water year 1957-58: Max 4,080 Min 9.0 Mean 214 Cfsm 4.12 In. 55.76 Ac-ft 154,600

Peak discharge (base, 1,400 cfs). Dec. 20 (3 p.m.) 4,820 cfs (7.77 ft); Dec. 25 (10 p.m.) 1,460 cfs (5.64 ft); Jan. 29 (11 a.m.) 1,860 cfs (4.12 ft); Feb. 15 (10 p.m.) 2,420 efs (4.72 ft).______* Discharge measurement made on this day. 146 WILLAMETTE RIVER BASIN

1875. South Santiam River at Waterloo, Oreg.

Location. Lat 44°29'55", long 122°49'20", in SW£jJW£ sec. 28, T. 12 S., R. 1 W., on left bank 600 ft downstream from bridge at Waterloo and 2 miles upstream from Hamilton Creek. Drainage area.--640 sq mi, approximately. Records available. July 1905 to March 1907, October 1910 to December 1911 (gage heights only, January to December 1911), July 1923 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Published as South Fork of Santiam River at Waterloo 1905-7, 1910-11. Gage. Water-stage recorder. Datum of gage is 370.39 ft above mean sea level, datum of T929. Prior to Dec. 31, 1911, staff gage at site half a mile downstream at datum about 5.0 ft lower. July 1, 1923, to Nov. 12, 1934, staff gage at present site and datum. Average discharge.--36 years (1905-6, 1923-58), 2,865 cfs (2,074,000 acre-ft per year). Extremes. Maximum discharge during year, 55,300 cfs Dec. 20 (gage height, 18.54 ft), minimum, 156 cfs Sept. 9, 10 (gage height, 2.09 ft). 1905-7, 1910-11, 1923-58: Maximum discharge, 74,200 cfs Dec. 28, 1945 (gage height, 22.85 ft), from rating curve extended above 37,000 cfs by logarithmic plotting; mini mum, 96 cfs Sept. 1, 2, 1940. Remarks. Records good. Some diurnal fluctuation caused by numerous log ponds above station. No diversion above station. Cooperation. Gage-height record collected in cooperation with U. S. Weather Bureau. Revisions (water years) . WSP 1248: 1907, 1924-30, 1932.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Dec. 21 to Jan. 29) Oct. 1 to Feb. 16 Feb. 17 to Sept. 30

2.3 240 7.0 8,700 2.1 160 5.0 3,490 2.5 335 10.0 18,600 2.5 360 7.0 8,700 3.0 660 13.0 29,700 3.0 720 10.0 18,600 4.0 1,710 17.0 47,500 4.0 1,790 5.0 3,400 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 249 352 847 4,900 9,730 4,600 2,250 2,940 1,330 945 305 205 2 300 335 1,550 4,150 7,520 3,910 2,200 2,760 1,520 927 35F 192 3 796 315 1,640 3,620 6,260 3,390 2,120 2,580 1,540 900 294 1S4 4 788 300 1,350 3,080 5,180 2,960 2,000 2,450 1,420 846 294 180 5 732 285 1,190 2,770 4,710 2,880 1,920 2,330 1,280 765 288 176 6 724 280 5,850 2,690 4,310 *2,670 1,800 2,220 2,040 712 283 172 7 764 276 27,500 2,710 4,220 2,520 1,830 2,050 3,230 672 278 168 8 788 267 10,500 2,730 4,310 2,470 1,820 2,000 2,960 648 278 164 9 740 262 5,900 2,780 4,240 2,390 1,820 2,000 2,360 624 272 160 10 578 272 *4,060 2,770 5,250 2,290 2,530 1,930 1,930 *600 266 164 11 476 576 3,100 5,680 5,350 2,170 2,960 1,920 1,670 576 261 168 12 432 2,050 2,470 10,000 8,390 2,040 2,690 1,790 1,610 546 250 172 13 839 10,200 2,080 9,540 11,400 1,930 2,690 1,570 1,470 525 245 245 14 1,440 7,400 1,980 *7,060 9,230 1,830 2,770 1,430 1,340 504 240 518 15 910 4,850 1,850 10,500 15,600 1,750 2,450 1,390 1,220 483 235 457 16 692 2,980 1,780 8,270 24,500 1,660 *3,090 1,410 1,130 462 230 396 17 571 2,100 2,240 13,100 15,000 1,650 7,150 1,430 1,040 455 230 338 18 502 2,100 3,940 11,100 11,600 1,750 9,450 1,390 963 455 225 316 19 456 3,020 17,100 7,430 8,540 1,740 8,700 1,380 918 448 220 266 20 414 2,280 47,200 5,630 6,690 1,860 18,300 1,280 873 434 215 288 21 390 1,790 28,800 4,810 5,350 2,330 18,000 1,230 828 420 205 278 22 368 1,480 14,400 3,870 4,670 2,440 13,300 1,180 792 402 *200 310 23 476 1,290 9,160 3,960 4,860 2,420 10,300 1,270 756 390 196 294 24 444 1,180 9,260 7,270 5,350 2,790 7,790 1,190 1,055" 378 192 261 25 432 1,100 12,500 6,850 9,290 2,900 6,050 1,170 1,420 366 188 250 26 536 1,070 14,900 5,500 8,700 3,010 5,000 *1,050 1,070 354 184 256 27 489 991 10,800 4,470 7,110 2,760 4,170 1,010 1,010 349 180 250 28 438 1,020 15,500 8,980 5,580 2,550 3,660 1,110 1,130 338 180 225 29 396 919 13,000 15,700 - 2,520 3,270 972 1,040 322 192 205 30 374 838 8 ) 860 15,800 2,520 3,070 1,000 310 230 196 31 *368 6,350 13,100 2,330 55T 305 Total 17,902 52,178 288,067 210,820 222,940 77,030 155,150 50,241 41,950 16,461 7,396 7,494 Mean 577 1,739 9,292 6,801 7,962 2,485 5,172 1,621 1,398 531 239 250 Cfsm 0.902 2.72 14.5 10.6 12.4 3.88 8.08 2.53 2.18 0.830 0.373 0.391 In. 1.04 3.03 16.74 12.25 12.95 4.48 9.02 2.92 2.44 0.96 0.43 0.44 Ac-ft 35,510 103,500 571,400 418,200 442 , 200 152,800 307,700 99,650 83,210 32,650 14,670 14,860 Calendar year 1957: Max 47,200 Mln 141 Mean 2,902 Cfsm 4.53 In. 61.54 Ac-ft 2,101,000 Water year 1957-58: Max 47,200 Mln 160 Mean 3,144 Cfsm 4.91 In. 66.70 Ac-ft 2,276,000 Peak discharge (base, 21,000 cfs). Dec. 7 (5 a.m.) 34,000 cfs (14.04 ft); Dec. 20 (7:30 p.m.) 55,300 cfs (18.54 ft); Jan. 29 (4:30 p.m.) 21,900 cfs (10.95 ft); Feb. 16 (6:30 a.m.) 28,600 cfs (12.73 ft); Apr. 20 (11:30 p.m.) 24,100 efs (11.46 ft). Discharge measurement made on this day. WILLAMETTE RIVER BASIN

1890. Santiam River at Jefferson, Oreg.

Location. Lat 44°42'55", long 123°00'40", in SE& sec. 11, T. 10 S., R. 3 W.. on right bank 350 ft upstream from railroad bridge at Jefferson, 2-1 miles (revised) downstream from confluence of North Santiam and South Santiam Rivers, and 9 miles upstream from mouth. Drainage area. 1,790 sq mi, approximately. Records available.--October 1905 to June 1906 (gage heights and discharge measurements only), October 1907 to September 1916, and October 1939 to September 1958 in reports of Geological Survey. Gage-height records collected at same site since April 1907 are contained in reports of U. S. Weather Bureau. . Water-stage recorder. Datum of gage is 199.63 ft above mean sea level, datum of f929. Prior to Sept. 22, 1940, staff gages at sites within 350 ft downstream at different datums. Average discharge. 28 years (1907-16, 1939-58), 7,775 cfs (5,629,000 acre-ft per year). Extremes . Maximum discharge during year, 95,500 cfs Dec. 21 (gage height, 20.03 ft); minimum, 758 cfs Sept. 7, 8 (gage height, 1.81 ft). 1905-6, 1907-16, 1939-58: Maximum discharge, 161,000 cfs Nov. 22, 1909 (gage height, 18.2 ft, from floodmark, site and datum then in use); corresponding gage height at present site, 23.0 ft, from curve of relation); minimum observed, 260 cfs Aug. 15-22, Aug. 24 to Sept. 2, 1940 (gage height, -1.00 ft, site and datum then in use). Maximum discharge known, about 202,000 cfs Nov. 21, 1921 (gage height, 19.5 ft at railroad bridge 350 ft downstream, site and datum in use prior to Oct. 1, 1940; cor responding gage height at present site, 24.4 ft, from curve of relation). Remarks. Records excellent. Plow regulated by Detroit Reservoir (see p. 139). Salem Canal diverts from North Santiam River at Stayton for irrigation and power use; most of this water reaches Willamette River through Mill Creek at Salem. Stayton Canal diverts from North Santiam River at Stayton for irrigation of lands near West Stayton; some return flow reaches North Santiam River above station. Albany power canal diverts from South Santiam River at Lebanon; return flow reaches Willamette River at Albany. Revisionss (wa(water years). WSP 904: Drainage area. WSP 1094: 1908, 1910, 1912, 1943. WSP 124248: 191I, 1915-16(M).

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Apr. 21 Apr. 22 to Sept. 30

2.8 1,480 12.0 27,500 1.8 750 6.0 7,200 4.0 3,000 16.0 53,700 2.5 u.,550 10.0 19,500 6.0 6,700 19.0 81,100 4.0 3,300 13.0 33,100 9.0 15,000 Discharge, In cubic feet per second, water year October !957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2,650 1,970 5.790 22,000 21,200 9.940 4,950 7,160 2,530 2.520 1,600 862 2 2,700 1,790 6,180 20,900 19,900 8,630 5,180 7,020 2,860 2,420 1,070 852 3 5,080 1,640 6,990 17,900 17,200 7,700 4,780 6,580 5,280 2,420 964 825 4 5,400 1,560 6,240 12,000 15,200 *6,740 4,360 5,980 5,160 2,190 948 802 5 5,460 1,930 6,790 11,100 14,200 6,280 4,210 5,680 2,840 2,000 892 802 6 5,080 2,770 8,160 10,700 15,400 5,390 4,000 5,660 5,300 1,820 855 810 7 2,570 5,210 44, 400 10,600 13,000 5,490 5,910 5,700 6,210 1,680 848 795 8 5,790 5,300 22,800 8,970 10,800 5,990 5.820 5,560 6,500 1,650 855 780 9 4,580 2,560 13,100 10,300 10.200 6,260 3,840 5,660 6,360 *1,600 848 Tso 10 4,570 1,970 10,900 10,500 11,700 5,670 4,740 5,660 5,540 1,620 825 802 11 4,580 2,150 *9,000 12,300 12,400 5,210 5,770 6,000 4,760 1,560 825 810 12 5,910 3,500 7,720 17,900 16,600 5,080 5,330 6,000 5,500 1,490 795 825 13 5,960 17.000 7,050 21,500 24,100 4,720 5,120 4,860 5,760 1,350 825 878 14 6,010 14,800 6,700 17,300 20,500 4,430 5,270 3,750 4,180 1,500 840 1,080 15 5,370 11,100 6,600 23,000 24,800 4,270 4,890 5,260 5,490 1,250 818 1,290 16 4,660 7,530 6,410 20,500 45. 300 5,980 *5,950 5,180 3,700 1,120 802 1,540 17 4,580 5,630 6,900 *29,400 29,200 5,910 9,560 5,590 5,590 1,030 802 2,050 18 5,960 5,190 9,690 24,600 25,800 5,910 17,100 4,050 5,200 998 810 2,200 19 3,270 8,560 26,200 19,700 19,400 5.810 13,000 4,180 2,940 964 810 2,250 20 2,810 7,670 81.100 16,200 17,600 5,980 30,000 5,960 2,910 964 795 2,580 21 2,910 6,740 72,400 15,100 16,300 4,450 56.300 3,430 2,450 952 795 2,420 22 5,100 6,130 55, 700 15,100 14,200 4,950 30,000 2,850 1,980 885 810 2.500 25 *2,750 5,310 20,900 11,200 12,900 4,930 25,400 2,860 1.950 870 802 2,460 24 2,820 4,250 20,400 15,800 12,800 5,810 22,700 2,960 2,670 1,340 302 2,420 25 2,900 4,640 27,500 18,300 20,400 6., 050 18,700 5,090 5,780 2,150 795 2,410 26 2,790 5,530 51,300 15,600 20,800 6,540 17,700 2,800 5,480 2,150 788 2,240 27 2,810 5,670 25,700 14,500 16,900 5,870 14,900 2,530 5,260 2,140 *810 2,140 28 2,650 4,810 30,600 18,000 12,600 5,570 11,900 *2,420 5,180 2,140 810 2,100 29 2,510 4,420 29,200 27,200 - 5,250 9,240 2,290 2,620 2,100 825 2,070 50 2 550 4,400 55.200 5 > 190 7,820 2,110 2,550 862 *2,000 51 2J.05g 22*500 51,400 5,000 2,080 2^070 885 Total 105,990 157,510 632,820 552,570 505,200 171,080 540,400 132,910 110,130 51,525 26,811 45,955 Mean 5,419 5,250 20,410 17,820 18,040 5,519 11,350 4,287 3,671 1,656 865 1,552 Ac-ft 210, 200 312,400 tl,255 *1,096 *1,002 539,300 675,200 265, 600 218,400 101,800 53,180 91,150 Calendar year 1957: Max 81,100 Min 654 Mean 7,100 Ac-ft 5,141,000 Water year 1957-58: Max 81,100 Mln 780 Mean 7,761 Ac-ft 5,618,000 * Discharge measurement made on this day. * Expressed In thousands. 148 WILLAMETTE RIVER BASIN

1895. Luckiamute River near Hoskins, Oreg.

Location. Lat 44 043'10", long 123°30'10", in NE£ sec. 11, T. 10 S., R. 7 W. , on right bank a quarter of a mile downstream from Benton County line and 3| miles northwest of Hoskins. Drainage area. 34 sq mi, approximately. Records available. Way 1934 to September 1958. Gage. Water-stage recorder. Datum of gage is 378.7 ft above mean sea level (river- profile survey). Average discharge. 24 years, 209 cfs (151,300 acre-ft per year). Extremes. Maximum discharge during year, 3,500 cfs Dec. 19 (gage height, 9.97 ft); mini mum, 5.0 cfs Aug. 25. 1934-58: Maximum discharge, 5,560 cfs Dec. 14, 1946, Feb. 17, 1949; maximum gage height, 13.22 ft Dec. 14, 1946; minimum discharge, 5.0 cfs Oct. 15, 16, 1952, Aug. 25, 1958. Remarks. Records good. Log ponds upstream cause diurnal fluctuation at times. No diversion above station. Revisions (water years). WSP 834: 1936(M). WSP 1318: 1946(M).

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second)

1.3 4.0 2.2 139 1.4 8.5 3.0 325 1.5 4.0 615 1.6 6.0 1,410 1.8 9.0 2,960 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 129.8 22 146 391 1,120 678" 358"359 187 185 42 24 To"11 7.4 2 22 201 332 231 165 45 23 7.4 3 19 21 158 289 485 273 264 151 42 21 10 7.0 4 21 20 129 255 385 246 253 139 39 20 10 7.0 5 20 20 117 231 332 235 231 132 37 19 *9.8 7.0 6 16 19 660 206 301 211 211 *120 48 17 9.1 6.4 7 16 18 1,090 187 284 220 194 111 50 17 9.1 674 8 19 Iff 576 *201 3TT 229 177 102 42 17 9.1 6.4 9 *20 18 375 180 650 237 168 94 40 17 8.5 7.0 10 13 46 282 20T 852 233 192 88 39 17 8.5 7.4 11 12 117 229 318 *674 218 165 82 39 17 8.0 9.1 12 19 282 187 440 1,050 206 153 78 39 17 8.0 *8.7 13 26"43 527 158 372 1,010 189 146 72 37 16 8.0 20 14 332 149 509 768 177 137 69 36 15 8.0 13 15 20 296 127 928 660 165 146 65 34 14 8.0 22 16 16 175 141 657 816 158 201 61 32 13 8.0 14 17 15 137 285 580 748 158 406 58 29 14 8.0 15 18 14 144 570 465 685 153 404 58 *27 14 8.0 12 19 13 *122 2,460 383 536 144 393 61 26 16 7.4 11 20 12 104 1,830 362 426 141 915 54 26 13 7.0 10 21 12 88 1,250 323 359 134 840 53 25 13 7.0 13 22 25 78 984 284 330 129"127 598 51 24 13 7.0 12 23 34 70 710 325 299 488 50 25 13 6.4 10 24 39 63 916 573 344 127 421 50 26 13 7.0 10 25 42 58 1,200 521 732 *209 365 53 26 12 6.0 12 26 36 54 1,240 426 682 240 320 46 25 12 6.4 12 27 29 51 1,050 388 530 206 279 46 26 11 6.4 9.8 28 25 65 1,110 654 426 177 251 48 26 TT 8.0 9.1 29 23 50 872 872 - 168 222 45 25 11 8.0 8.5 30 26 50 629 1,040 170 204 43"42 26 11 8,5 8.5 31 24 482 1,760 185 11 ' Total 670.8 3,087 20,313 14,653 16,473 6,132 9,162 2,472 1,003 472 252.2 309.1 Mean 21.6 103 655 473 588 198 305 79.7 33.4 15.2 8.14 10.3 Cfsm 0.635 3.03 19.3 13.9 17.3 5.82 8.97 2.34 0.982 0.447 0.239 0.303 In. 0.73 3.38 22.22 16.03 18.02 6.71 10.02 2.70 1.10 0.52 0.28 0.34 Ac-ft 1,330 6,120 40,290 29,060 32,670 12,160 18,170 4,900 1,990 936 500 613 Calendar year 1957: Max 2,460 Mln 9.8 Mean 183 Cfsm 5.38 In. 72.89 Ac-ft 132,200 Water year 1957-58: Max 2,460 Mln 6.0 Mean 205 Cfsm 6.03 In. 82.05 Ac-ft 148,700 Peak discharge (base. 2,000 cfs).--Dec. 19 (5 p.m.) 3,500 cfs (9.97 ft); Jan. 31 (10 a.m.) 2,080 cfs (7.39 ft). Discharge measurement made on this day. WZLLAMETTE RIVER BASIN 149

1900. Lucklamute River at Pedee, Oreg.

Location. Lat 44°44'35", long 123°25'25" , in SE£ sec. 33, T. 9 S., R. 6 W. , on left bank half a mile downstream from Pedee Creek and three-quarters of a mile southwest of Pedee. Drainage area.--115 sq mi. Records available.--October 1940 to September 1958. Gage.--Water-stage recorder. Datum of gage is 245.47 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to July 1, 1949, staff gage 1,700 ft downstream at datum 1.85 ft lower. Average discharge. 18 years, 475 cfs (343,900 acre-ft per year). Extremes. Maximum discharge during year, 7,820 cfs Dec. 19 (gage height, 14.64 ft); mini mum, 9.5 cfs Sept. 8. 1940-58: Maximum discharge, 13,500 cfs Feb. 17, 1949 (gage height, 18.46 ft, from floodmark, present site and datum), from rating curve extended above 7,800 cfs by logarithmic plotting; minimum observed, 7 cfs Sept. 12, 1944. Remarks. Records good. Some diurnal fluctuation at low flow caused by log ponds above station. Several small diversions for irrigation above station. Revisions (water years). WSP 964: 1941. WSP 1044: Drainage area. WSP 1248: 1945.

Rating table, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second} (Shifting-control method used Feb. 1-11) 1.3 9. 3.0 340 1.6 26 6.0 1,680 1.9 56 9.0 3,400 2.2 110 12.0 5,350 Discharge, in cubic feet per se cond, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 16 29 220 970 5,050 'SIB" 414 382 112 52 18 13 2 16 27 330 816 1,870 538 350 128 48 17 13 3 22 26 263 682 1,380 700 638 319 125 45 16 12 4 31 26 227 594 1,100 606 606 299 106 41 16 12 5 37 26 206 522 929 566 534 284 100 39 *16 12 6 31 26 860 470 821 494 482 *260 128 38 14 11 7 32 26 1,880 426 762 494 450 251 138 36 15 9.9 8 33 26 1,100 *442 812 546 410 236 120 36 14 9^ 9 *40 26 731 414 1,230 602 386 221 104 36 14 9.9 10 31 37 550 434 1,740 570 410 209 100 36 14 11 11 26 163 442 690 *1,570 530 368 206 102 33 14 *12 12 34 310 375 1,010 2,610 490 340 197 93 31 13 14 13 76 4^6"708 322 924 2,440 450 326 188 87 31 14 26 14 60 305 ,O5O 1,950 414 305 175 85 28 14 27 15 42 368 278 ,800 1,760 386 308 168 80 26 14 29 16 32 257 290 ,430 2,090 361 403 158 73 25 14 3026" 17 29 203 627 ,380 1,860 350 710 152 68 25 14 18 27 224 1,300 ,140 1,690 340 790 148 *64 26 14 26 19 25 *206 5,260 960 1,360 316 722 158 60 27 14 20 20 24 182 4,900 902 1,090 305 1,230 142 60 26 13 18 21 22 160 3,260 808 906 296 1,280 138 59 24 12 18 22 25 145 2,580 704 834 284 1,080 130 56 24 11 22 23 44 130 1,830 794 736 284 970 128 56 23 IT 19 24 49 120 1,900 1,270 1,100 278 870 130 60 22 11 17 25 52 110 2,380 1,250 2,160 *35B~ 785 138 64 22 12 18 26 54 104 2,870 1,060 1,900 458 668 118 58 22 12 20 27 43 97 2,310 934 1,510 403 594 122 56 22 11 18 28 38 108 2,400 1,450 1,180 364 526 125 56 20 11 16 29 34 97 1,930 2,230 - 358 466 120 55-55 T8~18 12 16 30 32 93 1,480 2,810 368 422 106 13 15 31 32 1,170 4,410 389 110 15 Total 1,089 4,526 44,576 34,776 42,440 14,160 18,031 5,868 2,508 918 423 520.7 Mean 35.1 151 1,438 1,122 1,516 457 601 189 83.6 29.6 13.6 17.4 Cfsm 0.305 1.31 12.5 9.76 13.2 3.97 5.23 1.64 0.727 0.257 0.118 0.151 In. 0.35 1.46 14.41 11.25 13.72 4.58 5.83 1.90 0.81 0.30 0.14 0.17 Ac-ft 2,160 8,980 88,420 68,980 84,180 28,090 35,760 11,640 4,970 1,820 839 1,030 Calendar year 1957: Max 5,260 Min 10 Mean 393 Cfsm 3.42 In. 46.33 Ac-ft 284,200 water year 1957-58: Max 5,260 Min 9.9 Mean 465 Cfsm 4.04 In. 54.92 Ao-ft 336,900 Peak discharge (base, 3,500 cfs). Dec. 19 (7 p.m.) 7,820 cfs (14.64 ft); Jan. 31 (11 a.m.) 5,190 cfs (11.77 ft). * Discharge measurement made on this day. 150 WILLAMETTE RIVER BASIN

1905. Luckiamute River near Suver, Oreg.

Location. Lat 44°47'00", long 123°14'00", in Sw£sw£ sec. 18, T. 9 S., R. 4 W., on right bank 10 ft upstream from highway bridge at Helmick State Park, 3 miles northwest of Suver, and 4i miles downstream from Little Luckiamute River. Drainage area. 240 sq mi. Records available. August 1905 to October 1911, July 1940 to September 1958. Gage.--Water-stage recorder. Datum of gage is 171.92 ft above mean sea level, datum of ~~1929, supplementary adjustment of 1947. Aug. 18, 1905, to Oct. 31, 1911, staff gage at different datum and Aug. 20 to Oct. 15, 1940, at present datum. Average discharge. 24 years, 950 cfs (687,800 acre-ft per year). Extremes. Maximum discharge during year, 10,800 cfs Dec. 20 (gage height, 28.40 ft); mini mum, 22 cfs Aug. 26. 1905-11, 1940-58: Maximum discharge, 23,800 cfs Feb. 18, 1949 (gage height, 33.10 ft), from rating curve extended above 14,000 cfs by logarithmic plotting; minimum, 13 cfs Oct. 17, 18, 1952. Maximum stage known, 33.5 ft, probably on Dec. 29, 1937, from information by local residents (discharge, 25,000 cfs, from rating curve extended above 14,000 cfs by logarithmic plotting). Remarks. Records excellent except those for periods of backwater from debris,.which are Fair. Some diurnal fluctuation at low flow caused by millpond above station. A few small diversions for irrigation above station. Revisions (water years). WSP 1044: Drainage area. WSP 1094: 1945-46. WSP 1248: 1905-11.

Rating tables, water year 1957-58, except periods of backwater from debris (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 2O Dec. 21 to Sept. 3O

1.9 29 12.0 1,300 1.6 20 12.0 1,340 Z.Z 42 18.0 2,690 2.0 18.0 2,800 3.0 86 24.0 4,770 3.0 24.0 5,100 4.0 164 26.0 6,140 5.0 260 26.0 6,300 6.0 373 28.0 9,810 8.0 642 27.0 7,670 8.0 642 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 31 74 198 2,010 7,600 2,160 824 754 198 96 31 27 2 3T 64 537T 1,660 5,290 1, 760 948 696 206 W 30 25 3 33 63 475 *1,390 3,440 1,500 1,320 636 238 79 30 25 4 44 62 392 1,180 2,380 1,290 1,240 594 202 75 29 26 5 58 62 341 1,030 1,870 1,170 1,100 559 183 70 31 24 6 60 63 506 912 1,620 1,070 984 522 197 66 *30 24 7 56 60 2,360 822 1,600 974 898 *484 270 61 29 26 8 58 58 2,380 798 1,640 1,O9O 856 458 23T 57 26 24 9 63 56 1,450 848 2,100 1,260 781 430 202 59 26 24 10 *63 58 1,030 792 3,470 1,150 797 404 185 60 26 25 11 50 198 816 1,210 3,180 1,050 760 386 188 58 26 26 12 44 418 680 2,100 *4,310 963 686 372 179 53 25 29 13 78 1,110 586 2,200 5,420 882 638 351 163 50 24 34 14 124 1,070 526 1,910 4,720 816 608 336 155 49 25 54 15 83 788 492 3,580 3,900 755 572 317 147 46 26 51 16 60 565 476 3,650 4,400 726 739 300 139 44 26 56 17 52 404 749 3,190 4,460 694 1,060 283 129 44 25 50 18 48 384 1,900 2,610 4,530 691 1,730 269 *118 45 25 *50 19 44 392 3,340 2,050 3,610 691 1,420 272 111 46 24 44 20 42 *339 9,270 1,720 2,700 617 1,950 264 109 46 24 37 HI 40 295 7,200 1,640 2,100 613 2,620 244 106 46 24 36 22 40 256 6,140 1,390 1,810 596 2,210 232 101 42 24 37 23 52 227 5,000 1,360 1,700 5"8~9576 1,870 225 95 40 23 42 24 107 207 3,800 2,640 1,990 1,670 221 103 37 23 38 25 117 192 4,260 2,850 3,830 622 1,540 251 114 36 23 37 26 128 179 5,320 2,340 4,680 *948 1,320 222 103 35 °3 38 27 TT2 167 5,410 1,880 3,840 840 1,170 216 94 36 23 40 28 93 168 4,99O 2,740 2,820 739 1,040 218 34 35 23 35 29 80 180 4,660 3,710 685 925 219 96 32 24 33 30 75 157 3,590 5,300 755 834 198 94 31 24 32 31 75 2,640 6,580 728 192 30 27 Total 2,041 8,316 81,507 68,092 95,010 28,957 35,110 11,125 4,550 1,591 799 1,049 Mean 65.8 277 2,629 2,197 3,393 934 1,170 359 152 51.3 25.8 35.0 Cfsm 0.274 1.15 11.0 9.15 14.1 3.89 4.88 1.50 0.633 0.214 0.108 0.146 In. 0.32 1.29 12.63 10.55 14.72 4.49 5.44 1.72 0.71 0.25 0.12 0.16 Ac-ft 4,050 16,490 161,700 135,100 188,4OO 57,440 59,640 22,070 9,020 3,160 1,580 2,080 Calendar year 1957: Max 9,270 Mlr1 24 Mean 737 Cfsm 3.O7 In. 41.69 Ac-ft 533,400 Water year 1957-58: Max 9,270 Mln 23 Mean 926 Cfsm 3.86 In. 52.40 Ac-ft 67O,70O Peak discharge (base, 6,600 cfs).--Dec. 2O (12 m.) 1O,8OO cfs (28.4O ft); Feb. 1 (l a.m.) 9,OOO cfs (27.64 ft). * Discharge measurement made on this day. Note. Backwater from debris Oct. 1 to Dec. 7, Sept. 14-30. WILLAMETTE RIVER BASIN 151

1907. Rickreall Creek near Dallas, Oreg.

Location. Lat 44°54'50", long 183°83 1 80", in SW^- sec. 35, T. 7 S., R. 6 W. , on left bank 150 ft downstream from covered wooden bridge, 8 miles downstream from Canyon Creek, and 3| miles west of Dallas. Drainage area. 86.5 sq mi. Records available.--August 1957 to September 1958. Gage. Water-stage recorder and concrete control. Altitude of gage is 520 ft (from topo graphic map). Extremes.--Maximum discharge during year, 2,610 cfs Dec. 19 (gage height, 5.81 ft); no flow for part of each day July 87 to Aug. 2, Aug. 5, 6, 83, Sept. 8, 9, 11; minimum daily, 0.2 cfs Sept. 9. 1957-58: Maximum discharge, that of Dec. 19, 1957; no flow part of several days in 1958; minimum daily, that of Sept. 9, 1958. Remarks.--Records good. Figures of daily discharge do not include water diverted above station for water supply of Dallas. Entire flow is diverted at times during low-flow periods. Cooperation. Records of diversion furnished by city of Dallas. Rating tables, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) Oct. 1 to Nov. 12 Nov. 13 to Sept. 30 1.2 1.9 2.0 52 0.9 1.4 5.9 2.7 196 1.3 3.7 2.5 144 1.0 1.5 9.5 3.3 415 1.5 3.0 290 1.1 .7 1.6 4.0 815 1.8 1.2 1.6 1.9 5.0 1,660 1.3 3'. 3 2.2 6.0 2,870 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2.6 13 56 249 752 252 132 106 24 14 2.0 0.9 2 276 12 75 216 485 213 194 98 26 IT 1.4 .9 3 5.5 10 64 182 358 182 246 89 24 9.0 1.7 .6 5.8 9.8 58 159 280 156 210 81 21 8.2 2.0 .7 4 *1.4 5 6.7 9.5 52 139 240 144 177 76 21 7.1 .6 6 6.4 9.2 279 123 228 126 156 *71 41 7.1 1.1 .4 7 7.0 8.4 424 113 234 126 137 67 33 6.5 1.2 1.1 8 10 8.4 262 *132 276 130 126 62 27 6.5 1.6 1.0 9 *9.5 8.1 180 126 716 128 117 58 23 6.8 1.7 .2 10 6.7 39 135 144 719 132 128 55 23 6.5 1.5 1.5 11 7.0 102 110 255 *582 132 113 54 22 5.9 1.4 1.4 12 9.8 222 92 465 1.020 123 100 50 21 5.6 1.2 1.0 13 28 425 78 342 738 115 92 47 20 5.6 1.1 4.8 14 18 231 76 579 543 106 83 45 18 4.8 1.1 3.5 15 13 174 68 1,040 495 98 83 41 16 3.0 .9 4.0 16 9.8 123 85 614 644 92 106 37 14 3.8 .9 4.0 17 8.8 96 194 510 719 92 314 35 14 3.8 .9 3.8 18 8.1 90 392 388 726 90 283 35 *13 4.2 1.0 *3.0 19 6.7 *83 *1,740 306 480 87 262 38 14 4.5 .9 2.5 20 6.4 73 1,130 262 354 87 470 33 13 4.2 .9 a2.0 21 5.8 64 *801 228 276 92 415 30 12 3.8 .6 al.6 22 7.4 57 604 192 243 89 338 28 12 3.0 .6 a2.2 23 20 50 446 312 213 87 290 28 12 2.5 .3 a2.0 24 36 45 605 570 326 *85 255 30 14 2.8 .6 al.7 25 38 41 997 465 638 123 225 29 13 1.5 .6 a2.0 26 35 38 1,060 374 526 149 193 28 12 2.3 .4 a2.0 27 27 36 706 338 397 130 169 29 12 1.5 .6 al.8 28 21 39 700 674 310 115 146 29 12 1.5 .6 al.4 29 18 34 532 914 _ 110 130 27 13 1.1 .8 al.O 30 17 33 402 882 110 117 2i 14 TTT 1.0 al.O 31 15 302 1.120 119 25 1.3 1.0 Total 418.6 2,183.4 12,705 12,413 13,518 3,820 5,807 1,485 554 151.1 33.0 54.6 Mean 13.5 72.8 410 400 483 123 194 47.9 18.5 4.87 1.06 1.82 Ac-ft 830 4,330 25,200 24,620 26,810 7,580 11,520 2,950 1,100 300 65 108

Adjusted for diversion to city of Dallas Mean 15.8 75.1 412 403 486 127 196 49.8 20.8 8.23 4.67 4.35 Cfsm 0.596 2.83 15.5 15.2 18.3 4.79 7.40 1.88 0.785 0.311 0.176 0.164 In. 0.69 3.16 17.94 17.54 19.10 5.52 8.26 2.16 0.88 0.36 0.20 0.18 Ac-ft 970 4,470 25,350 24,790 26,990 7,800 11,670 3,060 1,240 506 287 259

Calendar year 1957: Max - Mln - Mean - Ac-ft - Water year 1957-58: Max 1,740 Mln 0.2 Mean 146 Ac-ft 105,400

Adjusted Calendar year 1957: Mean Cf sir In. Ac-ft - Water year 1957-56: Mean 148 Cfsir In. Ac-ft 107,400 Peak discharge (base, 1,300 cfs).--Dec. 19 (3 p.m.) 2,610 cfs (5.81 ft); Dec. 25 3:30 p.m.) 1,850 efs (5.18 ft); Jan. 15 (1:30 a.m.) 1,370 efs (4.69 ft).______* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records, recorded range In stage, and records for Mill Creek near Wlllamlna. 152 WILLAMETTE RIVER BASIN 1910. Willamette River at Salem, Oreg. Location. Lat 44°56'40", long 123°02'30", In SWi see. 22, T. 7 S., R. 3 W., on right bank 300 ft upstream from Center Street Bridge at Salem and at mile 85.1. Drainage area.--7,280 sq mi, approximately. Records available.--October 1909 to December 1916, January 1923 to September 1958. Monthly discharges only January 1923 to September 1927, published in WSP 1318. Gage-height rec ords collected at about the same site since 1892 are contained in reports of U. S. Weather Bureau. Gage.--Water-stage recorder. Datum of gage is 114.14 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Oct. 1, 1909, to Dec. 31, 1916, staff gage at site half a mile upstream at about present datum. Jan. 1, 1923, to Nov. 26, 1934, staff gage at Center Street Bridge at present datum. Average discharge.--42 years, 23,260 cfs (16,840,000 acre-ft per year). Extremes.--Maximum discharge during year, 151,000 cfs Dec. 22 (gage height, 19.01 ft); minimum, 5,540 cfs Aug. 19 (gage height, -3.48 ft). 1909-16, 1923-58: Maximum discharge, 348,000 cfs Jan. 8, 1923 (gage height, 30.3 ft); minimum, 2,470 cfs Aug. 27, 1940 (gage height, -4.45 ft). Maximum discharge known, 500,000 cfs Dec. 4, 1861 (gage height, about 39 ft), from rating curve extended above 250,000 cfs in 1916. Flood of Feb. 5, 1890. reached a stage of 37.1 ft. Remarks.--Records good. Flow regulated at times by Lookout Point, Cottage Grove, Fern Ridge, Dorena, and Detroi*- Reservoirs (see p. 105, 110, 129, 113, 139). Many small diversions for irrigation aoove station; part of flow of Salem Canal, which diverts water from North Santiam River, returns to Willamette River below station, through Mill Creek at Salem. Records of chemical analyses and water temperatures for the water year 1958 are given in WSP 1574.

Revisions (water years).--WSP 1318: 1915(M).

Rating tables, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) (Shifting-control method used Oct. 1-9, Dec. 7-20) Oct. 1 to Dec. 22 Dec. 25 to Sept. 30 -2.9 6,450 -3.5 5,500 0.0 15,800 -1.0 12,500 7.0 50,300 2.0 24,800 15.0 110,000 10.0 72,800 19.0 151,000 18.0 141,300 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 8,820 7,050 10,700 82,600 115,000 67,800 17,600 25, Ooo 10,600 10,200 7.050 6,200 2 8,790 6,980 10,500 75,400 93,800 56, 900 18,800 21,800 11,400 9,980 6,420 6. OOP 3 *8,910 6,980 13,100 69,400 79,400 50,100 20,700 20,200 12,200 9,740 6,060 6,020 4 10,400 6.650 12,800 58,600 *67,800 41,600 19,500 18,700 12,400 9,520 6,060 6,100 5 11,300 6,750 11,900 51,900 57,900 30,400 18,100 17,800 13,200 8,690 5,940 6,250 6 11,100 7,260 12,800 47,400 50,800 26,900 16,800 17,100 14,100 8,240 5,940 6,200 7 9,720 8,190 35,000 42,500 47,100 24,300 15,600 17,400 16,500 7,880 5,820 6,040 8 10,700 8,310 57,500 37,100 *43,800 24,000 15,500 17,200 19,000 7,720 5,820 6,080 9 11,200 8,340 40,400 33,500 42,200 26,200 15,200 17 , 000 20,300 7,720 5,880 6,100 10 11,700 7,050 30,500 52,000 43,500 25,800 15,300 16,900 20,500 7,580 5,900 6,120 11 11,200 7,020 27,100 33,700 47,200 23,800 16,600 17,200 *21,000 7,050 5,880 *6,100 12 10,600 *8,100 25,000 42,700 54,800 22,300 16,700 17,700 19,500 6,800 5,720 6,180 13 10,100 17,000 22,900 59,400 66,400 20,900 15, 800 17,100 18,300 6,750 5,760 6,700 14 11,700 28,000 20,500 65,100 71,900 19,500 15,800 15,500 16,200 6,580 5,800 7,220 15 15 , 100 18,900 18,900 64,700 72,600 18,300 15,700 14,400 14,100 6,350 5,820 7,910 16 12,000 24,600 17,400 64,700 94,000 17,300 16,100 13,500 15,100 6,520 5,760 7,910 17 11,000 19,400 *18,400 65,900 113,000 16,400 19,200 15,100 15,200 6,250 5,780 8,150 18 10,300 16,900 24,800 76,200 119,000 *16,000 34, 100 15,300 12,100 6,500 5,820 8,650 19 9,570 18,400 38,600 73,500 101,000 15,800 38,400 13,600 11,100 6,520 5,620 8,600 20 8,430 19,300 88,000 62,700 81,400 15.500 44,000 15,900 10,600 6,280 5,660 8,750 21 8,130 17,500 *150,000 54,600 74,200 15,700 64,300 13,500 10,300 6,180 5,660 8,870 22 8,460 16,100 150,000 49,200 68,600 16,700 65,500 12,500 9,920 *6,200 5,660 8,900 23 7,980 15,300 141,000 43,400 63 , 600 16,800 64,900 12,000 9.680 6,100 5,640 8.960 24 7,620 13,200 105,000 45,700 62,500 17,800 61,500 12,700 10,200 6,280 5,740 8,810 25 8,280 12,400 86,400 54,500 76,800 19,000 57,900 12,800 11,400 7,150 5,760 8,870 26 8,160 13,300 93,500 55,400 88,500 19,800 48,700 12,700 12,600 7,500 5,680 8,720 27 8,250 13,700 96,100 49,700 89,800 20,000 42,600 12,100 11,900 7,300 5,700 8,570 28 7,980 13,100 95,000 50,700 81,600 18,700 36,400 11,800 11,200 7,180 5,860 8,420 29 7,680 11,600 98,500 62,900 - 17,800 *30,400 11,700 10,800 7,180 5,900 8,270 30 7,590 11,600 100,000 92,200 17,600 25,300 11,100 10,300 7,220 5,960 6,240 31 7,260 91,300 114,000 17,500 10,600 7,200 6,150 Total 298,030 398,980 *1,723.6 H.,811.3 £2,068.1 757,200 902,800 469,900 407,700 227,160 182,220 223,890 Mean 9,614 13,300 55,600 58,430 73,860 24,430 30,090 15,160 15,590 7,328. 5,878 7,463 Cfsm ------In. ------Ac-ft 591,100 791,400 *3,419 *3,593 *4,102 *1,502 *1,791 932,000 808,700 450,600 361,400 444,100 Calendar year 1957: Max 150,000 Min 5,250 Mean 22,800 Cfsm 3.13 In. 42.52 Ac-ft 16,510,000 Water year 1957-58: Max 150,000 Min 5,620 Mean 25,950 Cfsm 3.56 In. 48.38 Ac-ft 18,790,000 * Discharge measurement made on this day. * Expressed in thousands. WILLAMETTE RIVER BASIN 153

1920. Mill Creek at Salem, Oreg.

Location. Lat 44°56'05", long 123°01'00", in NE£ sec. 26, T. 7 S., R. 3 W. , on left bank at State Street Bridge in Salem, 220 ft downstream from 19th Street power diversion. Drainage area. 110 sq mi. Records available.--November. December 1934, August to October 1938, May 1939 to September 1958.Prior to October 1940 monthly discharge only, published in WSP 1318. Gage.--Water-stage recorder. Datum of gage is 166.12 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Nov. 2 to Dec. 31, 1934, staff gage at site three-quarters of a mile downstream at different datum. July 21 to Aug. 14, 1938, staff gage and Aug. 15, 1938, to Oct. 9, 1940, water-stage recorder, at site 200 ft upstream at different datum. Average discharge. 19 years (1939-58), 142 cfs (102,800 acre-ft per year). Extremes.--Maximum discharge during year, 1,020 cfs Jan. 31 (gage height, 5.79 ft); mini mum, 6.0 cfs July 10. 1934, 1938-58: Maximum discharge, 1,350 cfs Jan. 28, 1954 (gage height, 7.07 ft); no flow Oct. 2, 1938. Remarks. Records excellent except those for period of backwater from debris, which are good. Diurnal fluctuation caused by powerplant above station. Salem power canal diverts water into Mill Creek near Stayton; several diversions from Mill Creek, includ ing Shelton flood bypass !£ miles upstream and 19th Street power diversion 220 ft upstream. Revisions.--WSP 1218: Drainage area.

Rating tables, water year 1957-58, except period of backwater from debris (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Jan. 31 Feb. 1 to Sept. 30 0.6 9.0 0.7 17 .7 14 24 1.0 38 1.0 43 6.0 1,060 1.5 110 2.0 200 4.0 645 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 16 40 115 194 570 220 102 TlO"118 102 89 55 69 2 27 38 136 184 363 198 132 104 78 61 66 3 31 47 *119 164 274 169 122 108 110 37 67 61 4 36 43 91 149 226 *149 106 110 101 87 65 62 5 16 37 li 137 200 146 106 108 95 44 65 64 6 17 45 98 132 174 144 98 104 113 20 64 60 7 13 48 228 1ST TS6 141 95 100 147 *17 59 62 8 20 48 182 132 220 202 90 94 106 17 60 60 9 16 49 150 132 226 198 89 92 108 *18 59 *59SB" 10 13 56 139 143 214 167 102 90 106 19 56 11 14 54 128 180 210 147 90 95 101 22 62 69 12 20 63 118 245 326 136 86 94 98 44 32 73 13 51 128 105 267 263 129 86 89 89 50 44 77 14 52 TlF 93 237 250 112 *86 83 88 47 55 76 15 47 96 91 241 292 101 84 80 84 45 55 79 16 35 82 102 204 441 104 129 94 80 46 52 79 17 49 66 ISO *342 331 101 170 86 83 44 55 79 IS 47 68 241 267 290 107 98 77 76 48 *59 80 19 57 69 426 224 239 100 32 84 83 48 58 89 20 5? 66 704 210 206 98 W 84 82 45 96 21 51 58 *524 190 180 95 48 70 80 47 59 89 41 53 533 164 174 94 138 60 69 48 58 84 22 *37 23 49 382 174 182 98 '2BO"254 77 74 42 55 82 24 35 51 324 261 267 108 90 95 45 59 77 25 45 57 313 252 430 106 214 96 96 45 60 79 26 49 60 471 214 418 112 196 *98 92 50 58 77 27 44 59 393 186 326 98 176 98 88 56 64 70 28 34 66 359 290 252 98 161 100 89 53 64 67 29 34 58 303 453 - 106 144 101 95 53 67 67 30 50 65 252 583 107 129 96 55 72 *69 31 37 210 896 96 101 55 70 Total 1,086 1,837 7,589 7,579 7,730 3,987 3,653 2,877 2,830 1,414 1,830 2,186 Mean 35.0 61.2 245 244 276 129 122 92.8 94.3 45.6 59.0 72.9 Ac-ft 2,150 3,640 15,050 15,030 15,330 7,910 7,250 5,710 5,610 2,800 3,630 4,340 Calendar year 1957 : Max 704 Mln 4.0 Mean 110 Ac-ft 79,970 Water year 1957-58 : Max 896 Mln 13 Mean 122 Ac-ft 88,450 * Discharge measurement made on this day. Note. Backwater from debris Aug. 21 to Sept. 30.

534540 O -60 -11 154 WILLAMETTE RIVER BASIN

1925. South Yamhill River near Willamina, Oreg.

Location. Lat 45°02 I 50", long 123°30'10", In sec. 14, T. 6 S., R. 7 W., on left bank 21 miles southwest of Willamina and 3 miles upstream from Willamina Creek. Drainage area. 133 sq mi. Records available. May 1934 to September 1958. Gage.--Water-stage recorder. Datum of gage is 235.55 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Average discharge.--24 years, 617 cfs (446,700 acre-ft per year). Extremes.--Maximum discharge during year, 10,300 cfs Dec. 19 (gage height, 11.40 ft); minimum, 4.3 cfs Aug. 22 (gage height, 0.35 ft); minimum daily, 6.0 cfs Aug. 21, 22, Sept. 5. 1934-58: Maximum discharge, 15,200 cfs Feb. 10, 1949 (gage height, 14.80 ft); min imum, 2.6 cfs Oct. 11, 1952; minimum daily, 5.6 cfs Sept. 18, 1951, Oct. 11, 1952. Remarks. Records good except those for periods of backwater from logs, which are fair. Slight regulation occasionally at low flows by millpond upstream. No diversion above station. Revisions (water years). WSP 814: Drainage area. WSP 1318: 1934.

Rating tables, water year 1957-58, except periods of backwater from logs (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 19 Dec. £0 to Sept. 30 2.0 355 0.4 6.0 2.0 360 3.0 815 .5 11 3.0 850 4.0 1,440 18 4.0 1,490 59 6.0 3,140 39 6.0 3,150 150 10.0 8,200 1.0 68 9.0 6,800 1.4 155 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 16 68 317 1,150 3 070 1,280 868 505 94 57 19 11 2 19 67 506 *1,020 2,080 1,100 1,160 445 94 49 18 9.8 3 46 63 403 832 1,550 954 1,500 596 96 44 16 9.8 4 45 61 355 715 1,210 802 1,150 356 88 42 *14 9.8 5 51 57 515 620 1,030 755 982 *320 84 39 14 6.0 6 45 56 1,710 535 922 670 844 296 175 57 14 8.7 7 40 54 2,920 472625 910 710 740 273 172 55 14 7.7 8 *42 53 1,730 994 858 660 252 116 55 11 6.8 9 42 51 1,180 590 2,630 898 600 228 101 55 13 7.7 10 42 245 876 735 *2,930 850 655 212 96 56 12 *9.8 11 39 798 695 1,410 2,150 790 545 203 96 54 12 12 12 38 1,130 574 1,830 5,110 755 486 194 88 51 11 9.8 13 83 2,160 480 1,410 2,930 690 450 179 81 31 9.8 18 14 96 1,450 471 2,060 2,580 640 422 166 77 29 11 26 15 76 1,020 407 2,940 2,150 595 596 155 72 29 10 36 16 67 685 529 2,120 2,750 545 620 145 66 27 10 58 17 57 511 1,050 2,070 2,660 550 1,220 140 *65 26 9.8 55 18 51 *480 2,090 1,600 2,660 555 1,080 152 58 26 9.8 32 19 46 431 6.940 1,300 1,990 490 1,230 155 57 27 9.8 26 20 43 359 6,670 1,150 1,570 468 5.000 152 58 27 9.2 31 21 40 301 *4,950 1,030 1,290 490 2,510 125 52 26 6.0 28 22 38 273 3,520 856 1,170 458 2,010 116 51 26 6.0 52 23 88 246 2,530 1,100 1,040 445 1,830 118 46 26 8.2 27 24 246 222 3,030 2,110 1,710 *592 1,530 112 52 24 8.2 25 25 171 209 3,470 1,810 2,670 752 1,290 114 55 26 6.4 25 26 142 193 3,990 1,500 2,500 760 1,100 105 49 28 6.8 26 27 114 177 2,960 1,380 1,890 625 916 109 52 28 6.8 22 28 98 215 2,910 2,600 1,560 540 770 109 52 27 8.2 25 29 89 180 2,370 3,080 - 555 670 105 47 25 9.2 18 30 1 68 1,820 3,120 650 585 94 54 22 11 ' 18 31 74 1,420 4.JOO 814 3Z_ 20 Total 2,162 11,983 63,188 47,970 55,266 21,296 51,599 6,079 2,340 974 352.9 594.9 Mean 69.7 399 2,038 1,547 1,974 687 1,055 196 78.0 31.4 10.7 19.8 Cfsm 0.524 3.00 15.3 11.6 14.8 5.17 7.92 1.47 0.586 0.236 0.080 0.149 In. 0.60 3.35 17.67 13.41 15.45 5.95 8.84 1.70 0.65 0.27 0.09 0.17 Ac-ft 4,290 23,770 125,300 95,150 109,600 42,240 62,680 12,060 4,640 1,930 660 1,180 Calendar year 1957: Max 6,940 Mln 13 Mean 560 Cfsm 4.21 In. 57.12 Ao-ft 405,300 Water year 1957-58: Max 6,940 Mln 6.0 Mean 668 Cfsm 5.02 In. 68.15 Ao-ft 483,500 Peak discharge (base. 5,700 cfs).--Dec. 19 (7 p.m.) 10,300 cfs (11.40 ft); Dec 25 (11 p.m.) 5,990 cfs (8.40 ft). * Discharge measurement made on this day. Note.--Backwater from logs Jan. 29 to Feb. 4, Feb. 9 to Mar. 2, Apr. 2-4, 18-26. WILLAMETTE RIVER BASIN 155

1930. Willamina Creek near Willamina, Oreg.

Location. Lat 45°08'30", long 123°29'35", in WjNE^- sec. 13, T. 5 S., R. 7 W., on left bank 4| miles north of Willamina and 7 miles upstream from mouth. Drainage area. 65 sq mi, approximately. Records available. June 1934 to September 1958. Gage. Water-stage recorder. Datum of gage is 315.1 ft above mean sea level (from river- profile map). Prior to Oct. 1, 1939, at datum 1.00 ft higher. Average discharge. 24 years, 255 cfs (184,600 acre-ft per year). Extremes. Maximum discharge during year, 4,980 cfs Dec. 19 (gage height, 9.57 ft); minimum, 10 cfs Sept. 7, 8. 1934-58: Maximum discharge, 7,760 cfs Dec. 21, 1955 (gage height, 11.65 ft), from rating curve extended above 3.400 cfs on basis of slope-area measurement of peak flow; minimum, 9 cfs Sept. 3, 4, 1934, Sept. 9, 1935, Aug. 8-10, 19, Sept. 22-27, 1939, Aug. 17, 18, 1940. Flood of Mar. 31, 1931, reached a stage of about 12 ft, from information by local resident (discharge, 8,200 cfs). Remarks. Records excellent except those for period of no gage-height record, which are fair. No regulation or diversion above station. Revisions.--WSP Drainage area.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.3 2.5 143 5.0 1,040 1.5 3.O 257 6.0 1,64O 1.8 4.0 585 8.0 3,260 2.1 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 14 23 188 529 1.4OO 597 367 257 75 44 17 13 2 18 21 242 *452 1,000 494 498 234 76 40 17 12 3 24 21 181 379 7OO 428 565 214 71 38 17 13 *17 4 '2522 2O 155 325 550 37O 494 200 66 36 13 5 20 147 280 460 346 428 *187 66 34 16 13 6 30 19 969 26O 42O 307 373 178 102 32 15 11 7 24 20 1,12O 24O 400 307 331 170 91 31 15 11 8 *25 20 674 280 44O 328 302 159 71 32 15 1O 9 25 20 474 26O 1,000 331 2 SO 149 66 32 15 12 10 19 57 364 320 *1,120 331 288 139 67 31 15 *15 11 17 174 293 60O 950 325 252 133 66 30 14 16 12 25 3O6 247 75O ,240 302 232 129 61 29 14 15 13 45 477 212 600 ,180 282 217 121 60 28 14 21 14 28 367 196 850 ,050 270 200 118 58 28 14 19 15 22 254 178 1,200 960 257 198 HO 55 25 14 24 16 20 181 189 850 ,140 247 23O 103 51 24 13 21 17 19 147 318 85O ,080 25O 419 100 *49 24 13 22 18 18 *147 661 TOO ,050 254 382 97 45 24 13 18 19 17 133 5.O50 600 84O 244 382 103 45 25 13 18 20 17 116 2,480 5OO 674 242 919 94 46 24 13 17 21 16 102 1,920 44O 553 25O 868 88 44 23 13 17 22 17 94 1,360 38O 505 234 796 85 41 23 12 17 23 34 86 1,O4O 460 456 230 778 83 41 22 12 16 24 61 82 1,170 850 722 *227 674 82 47 21 12 16 25 46 78 1,35O 750 1,130 299 581 81 47 19 11 17 26 39 74 1,510 650 1,O70 313 488 78 44 19 12 16 27 31 70 1,21O 550 895 277 418 82 44 18 12 15 28 27 83 1.16O 1,100 728 254 358 82 43 17 13 14 29 24 72 1,020 1,300 - 250 316 76 43 17 14 14 30 27 72 1 3OO 262 282 ~T572 47 15 14 31 25 649 l!7OO 313 to 1H 13 Total 801 3,356 25,525 20, 305 23,713 9,421 12,916 3,882 1,728 826 433 47O Mean 25.8 112 823 655 847 304 431 125 57.6 26.6 14.0 15.7 Cfsm 0.397 1.72 12.7 10.1 13.0 4.68 6.63 1.92 0.886 0.409 O.215 0.242 In. O.46 1.92 14.61 11.62 13.57 5.39 7.39 2.22 O.99 0.47 O.25 0.27 Ac-ft 1,590 6,660 50,630 4O.27O 47,03O 18,69O 25,620 7,7OO 3,430 1,64O 859 932 Calendar year 1957: Max 3,030 Mln 13 Mean 236 Cfsm 3.63 In. 49.38 Ac-ft 171,200 Water year 1957-58: Max 3,030 Min 10 Mean 283 Cfsm 4.35 In. 59.16 Ac-ft 205,100 Peak discharge (base, 2,500 cfs). Dee. 19 (5 p.m.) 4,980 efs (9.57 ft).______* Discharge measurement made on this day. Note. Ho gage-height record Jan. 5 to Feb. 9; discharge estimated on basis of weather records, recorded range in stage, and records for South Yamhill River near Willamina. 156 WILLAMETTE RIVER BASIN

1933. Mill Creek near Willamina, Oreg.

Location. Lat 44°58'20", long 123°27'00", in NE£tlW£ sec. 17, T. 7 S., R. 6 W., on left bank 0.2 mile upstream from road bridge, 4 miles southwest of Buell, and 8 miles south of Willamina. Drainage area. 27.4 sq mi. Records available. July to September 1958. Gage. Water-stage recorder. Datura of gage is 562.02 ft above mean sea level (levels by Bureau of Reclamation). Extremes.--Maximum daily discharge during period July to September, 16 cfs July 1; mini mum, 2.6 cfs Sept. 8 (gage height, 1.98 ft). Remarks. Records good except those for period of no gage-height record, which are fair. No regulation or diversion above station.

Rating table, July 1 to Sept. 30, 1958 (gage height, In feet, and discharge, in cubic feet per second) 1.9 1.4 2.0 3.0 2.1 5.5 2.2 9.0 2.4 20 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 a!6 3.4 2 a 15 H 3.4 3 a!4 4,6 3.4 4 a!3 *4.6 3.4 5 a!2 4.6 3.2 6 a!2 4.4 3.0 7 all 4.4 3.0 8 a!2 4.4 9 a!2 4.4 H 10 a!2 4.4 3.6 11 all 4.2 *3.6 12 all 4.2 3.6 13 alO 3.9 5.2 14 alO 3.0 5.2 15 *9.5 3.6 5.2 16 8.6 3.6 5.2 17 8.2 3.6 18 8.2 3.6 e 19 8.2 3.4 4.6 20 8.2 3.4 4.4 21 7.4 3.4 4.2 22 7.4 3.2 4.6 23 7.1 3.2 4.4 24 7.1 3.2 4.2 25 6.4 3.0 4.4 26 6.1 3.0 4.4 27 6.1 3.2 4.2 28 5.8 3.4 3.9 29 - 5.2 3.6 3.6 30 4. q 3.6 3.6 31 H 3.6 Total 290.3 119.1 121.1 Mean 9.36 3.84 4.04 Cfsm 0.342 0.140 0.147 In. 0.39 0.16 0.16 Ac-ft 576 236 240 Calendar year : Max Min Mean Cfsm In. Ac-ft Water year : Max Min Mean Cfsm In. Ac-ft * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records and records for Willa mina Creek near Willamina. WILLAMETTE RIVER BASIN 157

1940. South Yamhill River near Whiteson, Oreg.

Location. Lat 45°10'10", .long 123°12'25", in NW£ sec. 5, T. 5 S., R. 4 W., near left bank on downstream side of Whiteson Bridge on U. S. Highway 99W, 1 mile downstream from Salt Creek and l£ miles northwest of Whiteson. Drainage area. 502 sq mi. Records available.--July 1940 to September 1958. Gage. Water-stage recorder. Datum of gage is 82.30 ft above mean sea level, datum of T929. Prior to Sept. 20, 1940, wire-weight gage at same site and datum. Average discharge. 18 years, 1,750 cfs (1,267,000 acre-ft per year). Extremes. Maximum discharge during year, 22,200 cfs Dec. 20 .(gage height, 41.58 ft); minimum, 9.6 cfs Aug. 23, 24. 1940-58: Maximum discharge, 36,800 cfs Dec. 22, 1955 (gage height, 45.25 ft); mini mum, 8.5 cfs Sept. 25, 26, 1952 (gage height, 0.80 ft). Remarks. Records fair. Slight regulation during low-water periods from log pond upstream. Small diversions for irrigation above station.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Rate of change In stage used as a factor Dec. 7, 8, 19-29, Jan. 15-19, Jan. 28 to Feb. 5, Feb. 9-12, 24, 25, Feb. 27 to Mar. 1; shifting-control method used Dec. 31 to Jan. 12, June 6 to Sept. 30) 0.5 3.0 188 25.0 5,910 .9 4.0 308 35.0 10,800 1.1 6.0 585 39.0 15,300 1.5 10.0 1,320 41.0 20,500 2.0 15.0 2,520 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 45 165 392 3,630 12.700 4,260 2,140 1,420 505 147 26 24 2 40 147 989 3,160 9,700 5,440 2,690 1,280 298 142 27 25 3 40 130 940 *2,690 6,670 2,820 4,270 1,170 316 117 27 22 4 70 122 786 2,270 4,220 2,560 5,940 1,070 287 106 28 21 5 88 114 699 1,940 5,140 2,080 5,170 991 265 99 27 20 6 93 108 1,030 1,720 2,700 1,940 2,530 923 305 89 25 20 7 91 103 5,350 1,550 2.640 1,750 2,150 862 555 77 24 19 8 83 100 5,110 1,550 2,790 2,080 1,850 808 404 70 *25 21 9 91 99 3,340 1,910 4,550 2,640 1,650 *745 551 69 25 *18 10 121 107 2,160 1,850 8,740 2,550 1,650 692 295 68 25 15. 11 *90 841 1,620 2,930 8,070 2,250 1,550 659 290 68 27 18 12 79 1,340 1,320 4,810 8,680 2,000 1,390 627 268 62 24 22 13 82 "2,860 1,120 5,190 10,500 1,810 1,270 591 246 58 21 28 14 225 5,450 1,010 4,570 9,270 1,670 1,190 567 227 57 21 25 15 170 2,390 949 6,890 *7,610 1,540 1,110 528 220 52 19 44 16 129 1,590 912 7,170 7,950 1,440 1,550 482 197 49 20 51 17 108 1,120 1,430 6,570 8,640 1,570 1,670 448 177 47 20 58 18 95 951 3,760 5,750 8,890 1,570 3,250 452 164 46 20 52 19 86 889 6,770 4,470 8,520 1,520 2,650 451 154 46 19 51 20 79 782 18,000 5,520 6,170 1,260 5,750 451 *150 48 14 44 21 74 668 *15,000 5,590 4,560 1,500 6,580 599 151 46 12 42 22 69 *585 13,900 2,580 5,450 1,260 5,720 568 142 42 12 45 23 70 525 11,300 2,280 5,180 1,200 5,010 365 151 40 11 42 24 272 482 8,860 4,270 5,970 1,240 4,720 555 124 40 IT 42 25 382 440 8,290 5,550 7,550 1,320 4,020 555 151 58 13 40 26 360 412 9,580 4,940 8,870 1,920 5,200 559 146 56 12 40 27 296 386 10,100 5,870 7,550 1,690 2,600 554 131 36 12 42 28 239 386 8,880 5,050 5,880 1,470 2,160 544 131 56 13 54 29 194 426 8,000 7,490 - 1,340 1,850 544 150 32 16 34 30 173 366 6,650 *10,000 1,520 1,600 315 130 28 22 27 31 1 62 5,090 12.200 1,650 292_ 21 25 Total 4,196 22,084 163,337 155,480 186,320 57,840 82,360 19,001 6,817 1,918 617 982 Mean 135 736 5,269 4,570 6,654 1,866 2,745 615 227 61.9 19.9 52.7 Cfsm 0.269 1.47 10.5 8.71 15.3 5.72 5.47 1.22 0.452 0.123 0.040 0.065 In. 0.31 1.64 12.10 10.04 13.80 4.28 6.10 1.41 0.51 0.14 0.05 0.07 Ac-ft 8,320 43,800 324,000 268,700 569,600 114,700 163,400 37,690 13,520 3,800 1,220 1,950 Calendar year 1957: Max 18,000 Mln 24 Mean 1,480 Cfsm 2.95 In. 40.01 Ac-ft 1,071,000 Water year 1957-58: Max 18,000 Mln 11 Mean 1,866 Cfsm 3.72 In. 50.45 Ac-ft 1,351,000 Peak discharge (base, 9,300 cfs).--Dec. 20 (6 p.m.) 22,200 cfs (41.58 ft); Feb. 1 (10 a.m.) 15,900 cfs (58.20 ft); Feb. 15 (2 p.m.) 10,500 cfs (54.60 ft). * Discharge measurement made on this day. 158 WILLAMETTE RIVER BASIN

1960. Haskins Creek below reservoir, near McMinnville, Oreg.

Location.--Lat 45°18'40", long 123°20'55", in NE^ sec. 18, T. 3 S., R. 5 W., on right bank 800 ft downstream from dam of McMinnville water-supply reservoir and 11 miles north west of McMinnville. Drainage area. 7.1 sq mi, approximately. Records available. October 1951 to September 1958. Gage.--Water-stage recorder and concrete control. Altitude of gage is 707 ft above mean sea level (topographic survey of 1955). Prior to Aug. 5, 1952, at site 600 ft upstream at different datum. Average discharge. 7 years, 33.8 cfs, adjusted for storage (24,470 acre-ft per year). Extremes. Maximum daily discharge during year, 250 cfs Dec. 19; minimum daily, 2.1 cfs Sept. 20. 1951-58: Maximum daily discharge, 378 cfs Dec. 22, 1955; minimum daily, 0.3 cfs Oct. 1, 2, 1951. Remarks. Records good. All records presented herein include flow in pipeline which diverts 600 ft above station for McMinnville city water supply. Flow regulated by Haskins Creek Reservoir (see p. 170), but during winter months reservoir is empty except when inflow exceeds the capacity of outlet tunnel. Cooperation. Gage heights and meter readings for diversion furnished by city of McMinn- ville. Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 3.2 3.0 16 68 142 81 4.5 33 10 6.6 5.5 3.4 2 3.2 370 21 60 112 7T 42 3T 11 5.9 5.6 3.6 3 3.2 3.0 15 52 91 62 ~9T109 30 11 6.1 5.2 3.6 4 3.3 3.0 12 45 74 56 28 10 5.6 4.5 3.4 5 3.3 3.0 12 42 65 53 71 26 9.4 5.5 5.0 3.4 6 3.3 3.0 90 37 60 47 48 24 13 5.9 57B"5.8 3.6 7 3.1 3.0 92 35 EB"59 45 20 23 TT *5.8 4.1 8 3.1 3.0 61 37 45 *3.3 22 9.9 5.3 *5. 5.0 9 3.1 3.0 78 34 123 44 3.3 21 9.4 4.9 5. 4.4 10 3.1 3.2 105 39 126 43 2.9 20 9.4 4.9 5. 3.9 11 3.1 3.0 101 68 122 42 2.9 19 9.4 5.1 5. 3.8 12 3.3 3.0 96 98 149 38 3.0 18 8.9 5.1 5. 3.1 13 3.2 17 87 *71 141 36 3.3 17 8.4 5.1 5. 2.6 14 574"2.9 27 74 98 125 35 3.2 16 8.4 5.1 5. 2.4 15 2T 49 123 114 34 3.2 16 8.0 5.9 5 - 2.2 16 *3.4 17 24 107 120 33 3.0 16 8.1 6.5 5. 2.2 17 3.0 13 51 96 *133 33 2.2 14 7.9 6.8 5. 2.2 18 2.9 13 82 79 135 34 279 13 7.2 5.7 4. *2.2 19 3.0 12 250 66 114 34 8.3 14 6.6 4.5 4. 2.2 20 3.0 10 *207 60 96 35 102 14 6.7 478 4 . 2.1 21 3.0 9.1 160 53 79 36 93 13 7.1 5.5 5. 2.2 22 3.1 8.1 120 48 76 35 91 15 7.2 6.0 5. 2.2 23 3.3 7.6 100 65 71 34 74 16 5.8 6.2 5. 2.2 24 3.2 7.2 123 92 120 34 71 13 579 5.8 4. 2.2 25 3.1 6.8 168 84 156 38 72 12 6.4 5.8 4, 2.2 26 3.0 6.8 188 73 137 37 49 12 5.9 6.6 5~.5. 2.2 27 3.0 6.4 156 81 116 34 43 12 5.9 6.9 2.2 28 3.0 7.6 146 104 98 32 44 12 5.9 678 4. 2.2 29 3.0 *6.8 123 122 _ 33 40 *12 5.9 6.3 3.9 2.2 30 3.0 7.2 100 145 ______35 36 10 6.6 5.7 372"3.2 2.2 31 3.0 171 20 11 5.4 Total 96.8 242.8 2,988 2,353 3,020 1,269 1,147.0 553 246.3 178.1 157.4 85.4 Mean 3.12 8.09 96.4 75.9 108 40.9 38.2 17.8 8.21 5.75 5.08 2.85 Ac-ft 192 482 5,930 4,670 5,990 2,520 2,280 1,100 489 353 312 169

Adjusted for change in contents in Haskins Creek Reservoir

Mean 3.55 10.4 84.6 75.9 108 41.3 50.4 17.7 8.22 4.21 2.52 2.13 Cfsm 0.500 1.46 11.9 10.7 15.2 5.82 7.10 2.49 1.16 0.593 0.355 0.300 In. 0.58 1.64 13.73 12.33 15.82 6.71 7.92 2.88 1.29 0.68 0.41 0.34 Ac-ft 218 620 5,200 4,670 5,990 2,540 3,000 1,090 489 259 155 127

Calendar year 1957 : Max 250 Min 2.9 Mean 25 .2 Ac-ft 18, 280 Water year 1957-58: Max 250 Min 2.1 Mean 33 .8 Ac-ft 24, 490 AdJUEited Calendar year 1957 : Mean 25.2 Cfsm 3. 55 In. 48. 31 Ac-ft 18, 280 Water year 1957-58: Mean 33.6 Cfsm 4. 73 In. 64. 33 Ac-ft 24, 360 * Discharge measurement made on this day. WILLAMETTE RIVER BASIN 159

1970. North Yamhlll River at Pike, Oreg.

Location. Lat 45°22'10", long 123°15'15", In NW^- sec. 25, T. 2 S., R. 5 W., on right bank 500 ft downstream from Turner Creek, 0.5 mile southeast of Pike, and 4 miles northwest of Yamhlll. Drainage area. 66.8 sq ml. Records available. October 1948 to September 1958. Gage. Water-stage recorder. Datum of gage Is 192.66 ft above mean sea level, datum of 1929 (Corps of Engineers bench mark). Prior to Aug. 21, 1950, at datum 1.02 ft higher. Average discharge. 10 years, 259 cfs (187,500 acre-ft per year). Extremes. Maximum discharge during year, 3,800 cfs Dec. 19 (gage height, 8.00 ft); min- Imum, 5.0 cfs Aug. 22. 1948-58: Maximum discharge, 9,530 cfs Dec. 21, 1955 (gage height, 12.42 ft), from rating curve extended above 2,600 cfs on basis of slope-area measurement of peak flow; minimum, that of Aug. 22, 1958. Remarks. Records good. Occasional diurnal fluctuations caused by small dams upstream; no seasonal regulation. Water supply for city of McMinnvllle Is diverted from Hasklns Creek above station and water supply for city of Yamhlll Is diverted from Turner Creek above station. Small diversions above station for Irrigation.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 19 Dec. 20 to Sept. 3O 1.0 7. 2.5 211 0.9 5.4 2.0 112 1.2 14 3.0 380 1.0 8.4 240 1.4 25 4.0 830 1.1 12 405 1.7 53 2,100 1.4 31 860 2.1 113 2,900 1.7 61 2,100 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 9^2. 17 106 460 1,150 540 297 216 64 40 12 7.2 2 9.2 16 147 398 835 46T 476 2OO 65 3T 11 7.5 3 10 16 108 342 635 405 552 190 62 30 12 7.8 4 10 17 92 297 504 360 468 175 56 28 12 7.8 5 13 17 88 264 436 346 391 165 53 25 11 6.9

6 16 17 754 243 422 304 324 155 82"98 22 11 6.6 7 15 17 825 222 492"405 300 270 148 22 11 6.3 8 14 17 460 240 363 225 140 68 22 11 6.0 9 16 17 342 225 1,040 360 *208 133 62 22 11 B79 10 13 46 303 267 990 349 219 126 61 *22 10 7.2 11 11 123 253 533 957 324 192 121 61 19 *9.5 7.8 12 12 163 217 805 1,370 297 180 117 56 17 8.1 7.2 13 23 288 188 *532 1,110 276 170 110 53 17 8.1 10 14 16 249 166 914 950 261 160 104 51 17 7.8 10 15 15 169 140 1,280 900 249 160 98 48 16 7.5 ii 16 *14 113 129 900 1,040 237 178 92 44 14 7.5 11 17 13 90 355 800 *1,210 231 327 87 40 14 7.2 12 18 13 89 740 600 1,150 228 294 84 36 16 7.2 *10 19 12 82 2,430 496 860 219 310 87 36 16 7.2 9.2 20 12 72 *1,590 433 670 219 785 80 38 16 6.9 9.2 21 12 62 1,390 377 544 222 685 77 37 16 6.9 8.8 22 13 58 1,030 335 536 210 565 72 33 14 5.7 9.2 23 30 52 760 487 504 210 650 74 30 14 675 8.8 24 38 49 1,010 730 1,040 208 548 74 3T 14 6.3 8.4 25 30 46 1,470 630 1,370 231 460 68 37 13 6.3 10 26 23 45 1,510 512 1,070 231 398 68 35 12 6.3 9.5 27 18 43 1,230 561 830 213 335 72 34 12 6.3 8.4 28 17 53 1,150 890 665 210"200 291 77 33 11 7.2 7.5 29 16 *45 930 1,090 - 261 *68 34 IT 7.2 7.5 30 19 46 725 1,460 219 237 62 40 11 8.4 7.8 31 18 560 1,580 261 67 12 7.8 Total 500.4 2,134 21,198 18,903 23,685 8,747 10,616 3,407 1,484 567 263.7 254.5 Mean 16.1 71.1 684 610 846 282 354 110 49.5 18.3 8.51 8.48 Cfsm 0.241 1.06 10.2 9.13 12.7 4.22 5.30 1.65 0.741 0.274 0.127 0.127 In. 0.28 1.19 11.80 10.52 13.19 4.87 5.91 1.90 0.83 0.32 0.15 0.14 Ac-ft 993 4,230 42 , 050 37,490 46,980 17,350 21,060 6,760 2,940 1,120 523 505 Calendar year 1957: Max 2,430 Min 6.7 Mean 194 Cfsm 2.90 In. 39.46 Ac-ft 140,600 Water year 1957-58: Max 2,430 Min 5.7 Mean 251 Cfsm 3.76 In. 51.10 Ac-ft 182,000

Peak discharge (base, 2,500 cfs). Dec. 19 (11:30 a.m.) 3,800 cfs (8.00 ft); Dec. 25 (8 p.m.) 2,890 cfs (6.93 ft).______* Discharge measurement made on this day. 160 WILLAMETTE RIVER BASIN

1980. Willamette River at Wllsonvllle, Oreg.

Location. Lat 45"17"35", long 122°46'15", in SE-q- sec. 23, T. 3 S., R. 1 W., In upstream side of pier of bridge on U. S. Highway 99 at Wllsonvllle, l£ miles downstream from Corral Greek, and 3 miles upstream from Molalla River. Drainage area. 8,400 sq ml, approximately. Records available. October 1948 to September 1958. Gage. Water-stage recorder. Datum of gage Is 50.00 ft above mean sea level, datum of 1929; gage readings have been reduced to elevations above mean sea level. Prior to Oct. 1, 1954, staff gage at Buttevllle 4 miles upstream at same datum. Average discharge. 10 years, 30,930 cfs (22,390,000 acre-ft per year). Extremes. Maximum discharge during year, 152,000 cfs Dec. 23 (elevation, 77.05 ft); mini mum daily, 6,500 cfs Aug. 16-27 (computed from records for station at Salem). 1948-58: Maximum discharge, 248,000 cfs Jan. 21, 1953 (elevation, 90.00 ft, site then In use; about 87 ft at present site); minimum dally, 3,600 cfs Nov. 29, 30, 1952. Maximum stage known, about 105 ft at Wllsonvllle, Dec. 4, 1861. Remarks. Records fair. Flow regulated at times by Lookout Point, Cottage Grove, Dorena, Pern Ridge, and Detroit Reservoirs (see p. 105, 110, 113, 129, 139). Many small diver sions for Irrigation above station.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 9,000 8,OOO 14,000 92,500 131,000 85,400 22,200 27.500 12,000 12.000 8,500 7,000 2 9,000 8,OOO 14,000 83,OOO 125,000 70,400 23,500 25,700 13,000 12,000 8,000 7,000 3 9,000 8,000 16,000 75,500 104,000 60,3OO 26,900 23,900 14,000 11,000 7,500 7,OOO 4 *9,500 7,500 18,000 67,300 87,000 52,200 27,600 22,100 14,000 11,000 7,500 7,000 5 12,000 7,500 17,000 57,600 *73,500 40,700 25,600 20 , 600 15,000 11,000 7,000 7,000 6 13,000 8,000 18,000 51,500 63, 3OO 34, 300 23,300 19,700 18,000 10,000 7,000 7,000 7 12,000 9,000 25,000 46,300 56, 600 31,200 21,200 19,300 20,OOO 9,500 7,000 7,000 8 11,000 9,500 60 , 000 41,000 53,000 29,600 20,300 19,200 22,000 9,500 7,000 7,000 9 12,000 9,500 50,000 37,000 51,100 31 , 400 19,800 18,600 23,000 9,500 7,000 7,000 10 13,000 8,500 36,000 54,900 55,800 32,600 19,600 18,500 24.000 9,000 7,000 7,000 11 13,000 8,000 30,000 36, 200 58,700 31,000 20,400 18,300 24,000 9,000 7,000 7,000 12 12,000 *8,500 27,000 45,000 66,300 28,900 21 , 200 18,600 24,000 8,500 7,000 *7,000 13 12,000 17,000 25,000 61 , 400 76,800 27,000 20,400 18,600 23,000 8,500 7,000 7,500 14 13,000 31,000 23,000 69,900 82,900 25,100 19,900 17,200 *22,000 8,500 7,000 8,500 15 14,000 5S,000 21,000 73,600 83,600 23,700 19,600 16,100 20.OOO 8,000 7,000 8,500 16 14,000 31,000 20,000 75,600 92,700 22,40O 19,800 14,800 17,000 8,000 6.500 8,500 17 13,000 25,000 *19,000 77,200 110,000 21,100 22,400 14,000 16,000 8,000 6,500 9,000 18 12,000 22,000 25,000 83,100 124,000 *20,400 32,200 13,800 15,000 8,000 6,500 9,500 19 11,000 23,000 40,000 82,900 126,000 20,100 41,300 14,100 15,000 8,000 6,500 9,500 20 10,000 24,000 80,000 75,500 108,000 19,600 46,600 14,300 14,000 8,000 6,500 9,500 21 9,000 22,000 *014,000 64,700 88 , 600 19 ,,400 68,400 14,300 13,000 8,000 6,500 9,500 22 9,500 20,000 140,000 57,500 79,200 20,OOO 75,6OO 13,600 12,000 *8,000 6,500 9.5OO 23 9,000 19,000 151,000 51,200 73,000 20,800 74,300 12,600 12,000 8,000 6,500 9,500 24 9,000 17,000 142,000 52,200 69,400 21,200 71,600 12,900 13,000 8-, 500 6,500 9,500 25 9,500 16,000 115,000 61 , 300 78,600 22,600 67,200 13,300 14,000 9,000 6,500 9,500 26 9,500 17,000 107,000 64,900 94, 200 23,900 60,100 13,400 15,000 9,000 6,500 9,500 27 9,500 17,000 109,000 60,000 100,000 24,900 50, 700 13,100 15,000 9,000 6,500 9,500 28 9,000 17,000 108,000 58,300 96,800 23,900 43,000 13,000 14,000 9,000 7,000 9,500 29 8,500 16,000 107,000 69,400 - 22,500 *36,600 13,000 13,000 9,000 7,000 9,OOO 30 8,500 15,000 107,000 89,600 22,000 31 , 300 12,000 9,OOO 7,000 9,000 31 8.000 102,000 114,000 - --- 22,100 ----° 9,000 7,000 Total 332,500 482,000 tl,880 $2,010.1 *2,409.1 950, 700 *1,072.6 518,100 498,000 282,500 214,500 248,500 Mean 10,730 16,070 60, 650 64,840 86,040 30,670 35,750 16,710 16,600 9,113 6,919 8,283 Ac-ft 659,500 956,000 *3,729 *3,987 *4,778 tl,886 *2,127 tl,028 987,800 560,300 425,500 492,900 Calendar year 1957: Max 151,000 Min 5,500 Mean 25,880 Cfsm 3.08 In. 41.82 Ac-ft 18, 740,000 Water year 1957-58: Max 151,000 Min 6,500 Mean 29,860 Cfsra 3.55 In. 48.25 Ac-ft 21,620,000 * Discharge measurement made on this day. t Expressed In thousands. Note. Backwater from stoplogs, gates, and locks at dam at Oregon City, Oct. 1 to Dec. 2O, May 28 to Sept. 30 (no gage-height record July 25 to Sept. 11, Sept. 13-30; discharge estimated on basis of 6 discharge measurements and records for station at Salem). WILLAMETTE RIVER BASIN 161

1985. Molalla River above Pine Creek, near Wilhoit, Oreg.

Location (revised) . Lat 45°00'45", long 122°29'00", in SW^-SE^ sec. 30, T. 6 S. , R. 3 E., on right bank a quarter of a mile upstream from Pine Creek and 4? miles southeast of Wilhoit. Drainage area. 96 sq mi, approximately. Records available. October 1935 to September 1958. Gage. --Water-stage recorder. Altitude of gage is 780 ft (by barometer). Prior to Oct. 1, T945, at datum 2.02 ft higher. Average discharge. 23 years, 532 cfs (385,200 acre-ft per year). Extreme s . - -Maximum discharge during year, 6,650 cfs Dec. 19 (gage height, 10.14 ft); minimum daily, 26 cfs Aug. 27, 28, Sept. 7-10. 1935-58: Maximum discharge, 12,200 cfs Jan. 7, 1948 (gage height, 13.17 ft), from rating curve extended above 4,800 cfs on basis of shape of previous curve defined to 7,000 cfs; maximum gage height, 16.04 ft Dec. 21, 1955; minimum discharge, 19 cfs Aug. 30 to Sept. 2, 1940. Remarks . Records good. No regulation or diversion above station.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 2.4 25 3.4 275 6.0 1,670 2.6 57 4.0 495 8.0 3,620 2.9 125 5.0 985 9.0 4,900 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 31 82 220 690 1,970 629 439 511 155 164 46 31 2 69 77 *555 611 1,390 555 443 475 149 149 46 31 3 91 73 415 543 1,130 495 431 439 143 *140 44 31 4 73 67 334 491 958 447 401 404 146 131 46 29 5 75 63 282 455 919 435 376 380 140 120 44 29 6 82 61 1,160 455 880 398 348 356 266 115 43 28 7 100 59 2,920 455 892 380 *331 334 254 108 43 26 8 102 57 1,400 475 991 362 320 328 212 102 43 26 9 100 57 836 463 1,160 345 342 310 248 98 41 26 10 77 67 593 575 1,660 334 503 303 227 93 39 26 11 67 251 475 1,020 1,370 324 519 303 212 88 38 28 12 63 663 390 1,590 2,000 306 491 272 215 86 36 *29 13 268 1,860 334 1,230 1,970 292 507 242 212 82 36 33 14 251 1,020 338 1,230 1,440 275 503 221 200 82 35 43 15 164 670 296 1,990 1,910 266 447 212 182 75 35 46 16 125 463 303 1,430 2,550 254 680 215 170 71 35 48 17 102 352 503 2,270 1,970 257 1,900 212 152 69 32 52 18 88 366 730 1,750 1,660 257 1,500 209 143 69 32 41 19 77 415 3,740 1,170 1,240 257 1,630 *209 134 69 32 44 20 70 345 4.760 *897 985 292 4.400 200 128 67 *31 48 21 *69 286 2,750 720 804 373 2,970 194 120 65 31 63 22 86 245 1,630 602 705 394 2,070 185 112 63 29 61 23 115 218 1,220 1,030 690 427 1,500 188 108 61 29 53 24 125 200 1,570 1,810 *875 507 1,130 179 140 57 28 46 25 131 185 2,660 1,500 1,280 535 930 173 149 55 28 50 26 155 188 2,840 1,150 1,080 535 792 158 125 53 28 53 27 125 179 1,870 963 875 487 690 161 131 53 26 44 28 110 170 2,180 1,770 725 447 620 155 152 52 26 41 29 100 150 1,670 2,670 - 431 575 146 140 52 29 38 30 100 140 1,120 2,540 435 543 137 170 50 33 *36 31 98 858 2 , 870 427 152 48 31 Total 3,289 9,029 40,952 37,415 36,079 12,158 28,331 7,963 5,035 2,587 1,095 1,180 Mean 106 301 1,321 1,207 1,289 392 944 257 168 83.5 35.3 39.3 Cfsm 1.10 3.14 13.8 12.6 13.4 4.08 9.83 2.68 1.75 0.870 0.368 0.409 In. 1.27 3.50 15.86 14.49 13.98 4.71 10.98 3.08 1.95 1.00 0.42 0.46 Ac-ft 6,520 17,910 81,230 74,210 71,560 24,120 56,190 15,790 9,990 5,130 2,170 2,340 Calendar year 1957: Max 5,690 Mln 25 Mean 460 Cfsm 4.79 In. 65.07 Ac-ft 333,200 Water year 1957-58: Max 4,760 Mln 26 Mean 507 Cfsm 5.28 In. 71.70 Ac-ft 367,200

Peak discharge (base, 3,600 cfs).--Dec. 7 (2:30 a.m.) 4,150 cfs (8.44 ft); Dec. 19 (8 p.m.) 6,650 cfs (10.14 ft); Dec. 25 (9:30 p.m.) 4,100 cfs (8.40 ft); Jan. 29 (11:30 a.m.) 3,690 cfs (8.06 ft); Apr. 20 (4 p.m.) 6,550 efs (9.94 ft).______* Discharge measurement made on this day. 162 WILLAMETTE RIVER BASIN

2000. Molalla River near Canby, Oreg.

Location. Lat 45°14'40", long 122°41'33", in NW^- sec. 9, T. 4 S., R. 1 E., on right bank 0.3 mile downstream from Goods Bridge on Marquam-Canby road, li miles south of Canby, and 2-jj- miles downstream from Milk Creek. Drainage area. 323 sq mi. Records available.--August 1928 to September 1958. Gage. Water-stage recorder. Datum of gage is 102.02 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Oct. 24, 1933, staff gage and Oct. 24, 1933, to Sept. 26, 1955, water-stage recorder, 0.3 mile upstream at Goods Bridge at datum 2.98 ft higher. Sept. 27, 1955, to June 3, 1956, water-stage recorder at site 145 ft downstream from Goods Bridge at datum 1.98 ft higher. Average discharge. 30 years, 1,129 cfs (817,400 acre-ft per year). Extremes. Maximum discharge during year, 12,800 cfs Dec. 20 (gage height, 11.35 ft); minimum, 47 cfs Aug. 29. 1928-58: Maximum discharge, 25,100 cfs Jan. 7, 1948 (gage height, 14.9 ft, site and datum then in use; about 15.0 ft, present site and datum); minimum, 25 cfs Sept. 14, 1938; minimum daily, 38 cfs Sept. 7, 1935, Aug. 18, 23, 1940. Remarks. Records excellent except those for period of shifting control, which are good. No regulation. Numerous small diversions for irrigation above station. Revisions (water years). WSP 1248: 1929-30, 1932.

Rating tables, water year 1957-58, except period of shifting control (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 19 Dec. 20 to Sept. 30 3.0 700 1.3 4.0 1,370 118 4.0 1,380 1.6 110 6.0 3,300 2.0 235 6.0 3,300 2.0 220 8.0 6,150 2.5 435 9.0 7,900 2.5 410 11.0 12,000 3.0 670

Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 73 182 460 2,000 5,670 ,750 934 1,570 517 545 74 64 2 135 165 *967 1,710 3,830 ,550 941 1,230 285 5T5 72 64 3 382 148 1,510 2,970 ,370 934 1,120 282 *282 70 64 4 270 143 796 1,300 2,420 ,210 871 1,000 297 257 72 64 5 242 138 700 1,180 2,150 ,150 826 915 289 258 72 62 6 249 136 1,200 1,100 1,970 1,070 766 871 504 220 70 60 7 270 133 6,490 1,060 1,910 997 *724 808 736 208 66 55 8 278 128 3,670 1,070 2,140 955 718 748 550 195 70 *51 9 266 126 2,320 1,070 2,220 920 706 724 550 181 70 51 10 228 128 1,740 1,120 2,900 899 920 670 540 175 68 56 11 191 294 1,380 1,690 2,670 857 1,070 646 515 165 66 58 12 182 586 1,160 2,530 3,460 832 1,020 610 585 158 62 66 13 335 2,860 1,OOO 2,950 4,130 784 997 550 580 145 58 70 14 568 2,120 960 2,640 3,280 736 1,070 505 550 140 56 89 15 399 1,590 904 3,470 3,650 694 920 470 495 155 55 118 16 a300 1,150 869 2,860 6,450 658 1,290 450 450 118 55 155 17 a240 862 1,150 5,380 4,750 646 2,490 440 578 118 55 152 18 a200 766 1,900 4,950 3,900 646 3,100 410 357 122 55 155 19 al70 932 6,000 3,400 3,010 610 2,530 *406 315 125 *55 110 20 al50 802 11.800 *2,520 2,420 640 7,360 574 295 122 51 152 21 *148 684 8,020 2,090 2,020 772 8,800 561 274 120 49 152 22 146 579 5,510 1,710 1,750 850 6,170 557 254 115 51 184 23 185 520 *3,720 1,860 1,670 844 4,560 541 235 110 53 145 24 204 470 3,500 3,400 1,800 ,050 3,540 325 268 108 53 140 25 218 430 4,840 3,210 2,770 ,110 2,780 521 374 101 53 128 26 314 417 6,870 2,720 2,900 ,150 2,340 297 293 96 53 155 27 274 390 4,470 2,220 *2,420 ,070 1,970 529 274 89 51 128 28 235 390 4,700 3,170 2,040 ,000 1,740 317 517 85 56 110 29 200 374 4,190 5,180 - 948 1,590 289 297 81 56 105 30 194 346 6,130 969 1,470 268 555 74 62 *101 31 210 2*420 7,630 892 274 74 66 Total 7,456 17,989 97,966 84,830 83,270 29,629 65,147 17,774 11,745 4,811 1,875 2,964 Mean 241 600 3,160 2,736 2,974 956 2,172 575 392 155 60.5 98.8 Cfsm 0.746 1.86 9.78 8.47 9.21 2.96 6.72 1.77 1.21 0.480 0.187 0.506 In. 0.86 2.07 11.28 9.77 9.59 3.41 7.50 2.05 1.35 0.55 0.22 0.54 Ac-ft 14,790 35,680 194,300 168,300 165,200 58,770 129,200 55,250 25,500 9,540 5,720 5,880 Calendar year 1957: Max 11,800 Mln 51 Mean 1,124 Cfsm 3.48 In. 47.24 Ac-ft 813,800 Water year 1957-58: Max 11,800 Mln 49 Mean 1,166 Cfsm 3.61 In. 48.99 Ac-ft 843,900 Peak discharge (base,, 7,2OO, cfs).. --.--Dec. 7 (8 a... .) 8,260, cscfs (9.18. ft);; Dec.c. 2O (1 a.m.).. 12,800, cfs (11.35 ft); Dec. 26 (3 a.m.) 8,160 cfs (9.13 ft);t); Jan: 31 (1:30 p.m.) 8,760 cfs (9.43 ft); Apr. 20 (10:50(1 p.m.) 12,500 cfs (11.24 ft). * Discharge measurement made on this day. a .No gage-height record; discharge estimated on basis of weather records nd records for station above Pine Creek, near Wllholt. Note. Shifting-control method used Oct. 13 to Dec. 6. WILLAMETTE RIVER BASIN 163

2010. Pudding River near Mount Angel, Oreg.

Location. Lat 45°03'50", long 122°49'45", in SE£ sec. 8, T. 6 S., R. 1 W., on left bank on downstream side of Cline Bridge, 1^ miles west of Mount Angel, and 4 miles upstream from Little Pudding River. Drainage area.--204 sq mi. Records available.--October 1939 to September 1958. Monthly discharge only January to September 1945, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 119.76 ft above mean sea level, datum of T929. Prior to Sept. 22, 1945, staff or wire-weight gages at same site and datum. Average discharge.--19 years, 710 cfs (514,000 acre-ft per year). Extremes. Maximum discharge during year, 5,740 cfs Feb. 1 (gage ueight, 25.89 ft); mini mum, 6.1 cfs Aug. 26 (gage height, 0.16 ft). 1939-58: Maximum discharge, 15,000 cfs Feb. 17, 194d; maximum gage height, 30.38 ft Feb. 18, 1949; minimum discharge, that of Aug. 26, 1958. Remarks.--Records good. Wo regulation. Small diversions for irrigation above station. Revisions (water years). WSP 1094: 1943. WSP 1218: Drainage area. WSP 1248: 1943.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Oct. 13; rate of change In stage used as a factor on many days) Oct. 1 to 13 Oct. 14 to Sept. 30 0.9 24 6.5 3.0 158 1.4 47 8.5 4.0 256 2.3 97 .6 8.0 850 1.0 17.0 2,750 2.0 25.0 5,300 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 26 113 238 1,900 5.180 1.480 634 749 165 152 14 13 2 27 103 595 1,400 4,070 1,270 630 677 150 128 12 12 3 70 98 572 1,200 3,270 1,090 658 612 150 112 13 11 4 77 93 *484 1,000 2,630 963 628 556 152 100 16 11 5 83 89 426 900 2,140 895 600 508 145 89 16 9.6 6 75 85 643 850 1,760 857 563 482 227 77 15 9.0 7 80 83 2,160 800 1,560 787 533 448 372 *70 14 8.0 8 92 81 1,960 800 1,500 832 515 416 292 63 12 *9^ 9 76 79 1,380 800 1,500 881 488 380 290 63 12 9.6 10 65 79 1,030 900 1,630 845 567 353 261 61 12 10 11 54 142 832 1,200 1,580 780 *560 338 230 57 12 11 12 53 199 691 2,500 1,920 722 520 334 220 55 12 11 13 94 1.100 598 2,300 *2,140 676 491 306 207 48 10 16 14 226 1,010 570 2,200 *1 , 950 630 521 291 188 46 9.6 34 15 155 838 556 2,100 1,960 593 475 268 170 40 8.6 39 16 118 616 520 2,400 2,780 563 680 238 151 36 9.6 47 17 98 479 674 2,800 2,720 545 ,000 218 138 34 10 47 18 86 418 1,140 *2,500 2,410 552 ,310 204 124 36 9.8 46 19 79 434 2,190 2,010 2,000 516 ,260 194 114 38 8.8 34 20 72 361 4.920 1,690 1,650 498 ,390 181 110 38 *7.6 36 21 67 309 4,900 1,520 *1,400 506 .350 173 105 40 7.6 40 22 65 273 4,310 1,290 1,300 546 ,020 *163 98 32 7.4 47 23 *144 246 3,520 1,250 1.200 550 ,610 164 91 29 7.4 46 24 137 223 3,060 1,800 *1 , 300 671 ,270 163 100 26 7.4 36 25 140 206 3,080 1,940 1,890 691 ,880 170 174 24 7.6 33 26 217 193 3,430 1,770 2,280 714 ,550 160 133 22 6.9 34 27 177 185 3,160 1,550 2,100 674 ,270 153 119 18 6.9 40 28 147 187 3,150 1,920 1,770 642 ,110 160 151 21 6.7 32 29 130 194 3,010 2,630 - 628 965 151 138 18 7.6 27 30 121 176 2,510 3,590 628 845 135 144 17 12 24 31 124 2,250 5.210 594 133 15 14 Total 3,175 8,692 58,559 56,720 59,590 22,819 33,871 9,478 5,109 1,605 325.5 782.3 Mean 102 290 1,889 1,830 2,128 736 1,129 306 170 51.8 10.5 26.1 Cfsm 0.500 1.42 9.26 8.97 10.4 3.61 5.53 1.50 0.833 0.254 0.051 0.128 In. 0.58 1.58 10.68 10.34 10.86 4.16 6.17 1.73 0.93 0.29 0.06 0.14 Ac-ft 6,300 17,240 116,200 112,500 118,200 45,260 67,180 18,800 10,130 3,180 646 1,550 Calendar year 1957: Max 4,920 Hin 9.4 Mean 624 Cfsm 3.06 In. 41.52 Ac-ft 451,600 Water year 1957-58: Max 5,210 Mln 6.7 Mean 714 Cfsm 3.50 In. 47.52 Ac-ft 517,200 * Discharge measurement made on this day. Note. No gage-height record Jan. 1-18, Feb. 21-24; discharge estimated on basis of 3 discharge measurements and records for station at Aurora. 164 WILLAMETTE RIVER BASIN

2020. Pudding River at Aurora, Oreg.

Location. Lat 45°14 I 00", long 122°45'00", in SE£ sec. 12, T. 4 S., R. 1 W., on upstream side of bridge on U. S. Highway 99E at Aurora and half a mile upstream from Mill Creek. Drainage area. 479 sq mi. Records available.--October 1928 to September 1958. Gage. Wire-weight gage read once daily. Datum of gage is 77.23 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Oct. 2, 1934, and June 1 to Sept. 15, 1947, staff gage at same site and datum. Average discharge . 30 years, 1,208 cfs (874,600 acre-ft per year). Extremes . Maximum discharge during year, 8,150 cfs Feb. 1 (gage height, 19.35 ft, from graph based on gage readings); minimum, 28 cfs Aug. 24, 25, 29. 1928-58: Maximum discharge, 25,400 cfs Dec. 30, 1937 (gage height, 24.5 ft, from raph based on gage readings), from rating curve extended above 16,000 cfs; minimum, fhat of Aug. 24, 25, 29, 1958. Maximum stage known, 25.0 ft about Jan. 7, 1923 (discharge, 27,900 cfs, from rating curve extended above 16,000 cfs). Remarks.--Records good. Slight regulation at times in summer by mills in tributaries; small diversions above station. Revisions (water years). WSP 1094: 1931, 1934, 1936(M) , 1938, 1943. WSP 1218; Drain age area.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Jan. 31 Feb. 1 to Sept. 30

0.1 61 4.0 680 27 4.0 740 89 7.0 1,500 7.0 1,630 1.0 157 16.0 5,200 91 15.0 4,.700 2.0 300 19.0 7,680 176 20.0 9,200 328 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 66 173 292 4,160 7,740 5,660 1,070 1,420 258 248 34 58 2 SB 161 a440 3,460 6,900 3,020 1,090 1,260 280 254 32 40 3 78 146 a800 2,790 6,320 2,470 1,150 1,120 272 218 32 59 4 97 133 *772 2,160 5,770 2,080 1,160 1,020 267 189 32 58 5 123 127 671 1,750 5,200 1,810 1,100 931 267 170 34 40 6 137 125 636 1,470 4,620 1,680 1,050 869 296 151 57 40 7 133 121 1,700 1,330 4,060 1,560 975 817 488 *142 58 38 8 135 117 3,100 1,210 a3,800 1,540 928 764 602 117 54 *34 9 147 116 2,820 1,200 a3,700 1,680 895 714 512 106 54 34 10 132 119 2,060 1,210 a3,800 1,780 895 653 468 98 34 38 11 116 128 1,510 1,460 a3,700 1,650 *996 617 444 96 *56 58 12 104 186 al , 200 2,000 a3,900 1,500 al.OOO 595 418 94 35 42 13 104 491 990 3,080 a4,200 1,560 910 578 402 89 40 50 14 173 1,400 858 3,400 4,110 1,240 889 538 582 86 58 51 15 505 1,360 832 3,330 3,980 1,140 895 498 359 78 38 56 16 240 1,090 a800 3,280 4,450 1,070 918 462 312 64 36 71 17 190 822 832 *3,680 5,050 1,020 1,290 418 278 57 35 81 18 157 645 1,380 4,480 5,000 1,000 2,230 384 252 57 36 92 19 134 590 2,460 4,360 4,690 980 2,530 366 228 56 38 96 20 116 588 4,560 3,830 4,220 944 2,660 546 209 57 36 80 21 114 512 6,110 3,310 3,620 a900 4,240 321 203 65 54 75 22 109 449 6.690 2,800 2,960 a9~50 4,900 *302 189 62 52 77 23 106 396 6,470 2,320 2,490 a950 4,960 291 177 56 50 84 24 *150 360 5,970 2,860 *2,55Q al,100 a4,700 291 170 51 ~2828 88 25 197 330 5,600 3,530 3,260 al,200 4,340 294 200 48 81 26 209 305 5,700 3,560 4,280 al,200 3,760 299 254 46 29 75 27 274 290 5,840 3,200 4,420 al,200 3,060 299 248 45 33 73 28 247 286 5,520 3,120 4,160 al,200 2,380 294 247 42 30 73 29 213 282 5,320 3,020 - 1,150 1,950 294 241 41 28 75 30 191 295 5,100 a5,100 1,110 1,640 278 241 57 34 68 31 182 4,710 5.980 1 090 256 54 35 Total 4,747 12,143 91,743 92,440 122,750 45,214 60,319 17,589 9,164 2,950 . 1,050 1,801 Mean 153 405 2,959 2,982 4,384 1,459 2,011 567 305 95.2 55.9 60.0 Cfsm 0.319 0.846 6.18 6.23 9.15 3.05 4.20 1.18 0.637 0.199 0.071 0.125 In. 0.37 0.94 7.12 7.18 9.53 5.51 4.68 1.37 0.71 0.25 0.08 0.14 Ac-ft 9,420 24,090 182,000 1-83,400 243,500 89,680 119,600 34,890 18,180 5,850 2,080 3,570 Calendar year 1957: Max 7,080 Min 34 Mean 1,084 Cfsm 2.26 In. 30.73 Ac-ft 784,800 Water year 1957-58: Max 7,740 Mln 28 Mean 1,266 Cfsm 2.64 In. 35.86 Ac-ft 916,300 * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for station near Mount Angel. WILLAMETTE RIVER BASIN 165

2030. Scoggin Creek near Gaston, Oreg.

Location. Lat 45°27'30", long 123°09'15", in NW£ sec. 26, T. 1 S., R. 4 W., on left bank 100 ft upstream from highway bridge, li. miles upstream from mouth, and 1.7 miles north west of Gaston. Drainage area. 44.0 sq mi. Records available. October 1940 to September 1958. Gage. Water-stage recorder. Datum of gage is 168.92 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Oct. 1, 1947, water-stage recorder at site 300 ft upstream at same datum. Oct. 1, 1947, to June 7, 1950, staff gage at site 150 ft upstream at same datum. Average discharge. 18 years, 141 cfs (102,100 acre-ft per year). Extremes. Maximum discharge during year, 1,290 cfs Dec. 19 (gage height, 11.96 ft, backwater from debris); minimum, 0.1 cfs Aug. 28, Sept. 30. 1940-58: Maximum discharge, 5,320 cfs Dec. 21, 1955 (gage height, 15.94 ft); mini mum, that of Aug. 28, Sept. 30, 1958. Remarks. Records good. Some diurnal fluctuation caused by log ponds above station. Diversions by pumping for irrigation of 420 acres above station. Part of water supply (about 1 cfs) for Hillsboro is diverted from Sein Creek above station.

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 4.1 12 64 313 769 382 160 137 45 28 4.0 7.7 2 T& 11 105 253 553 331 248 130 42 25 4.5 6.4 3 5.4 10 80 203 454 280 501 123 51 18 4.7 1.2 4 6.5 10 64 179 359 226 246 115 39 14 4.4 2.7 5 8.4 11 58 162 309 206 196 108 57 13 3.8 6.8 6 12 12 268 151 260 183 170 105 87 11 3.8 4.2 7 10 13 494 142 255 174 157 101 76 10 4.0 4.0 8 10 13 316 146 274 183 148 94 54 9.5 4.5 2.9 9 12 14 175 146 475 175 144 88 56 12 4.0 1.6 10 7.8 24 136 148 552 166 142 85 50 *13 4.5 2.0 11 5.3 86 111 214 481 160 128 81 48 13 *4.O 3.2 12 6.9 116 96 479 748 155 124 78 45 11 .7 .5 13 17 157 84 377 602 151 117 74 41 11 *.5 5.4 14 14 129 78 460 517 144 *110 71 4O 11 .6 5.0 15 11 109 69 901 471 139 105 67 37 9.8 1.1 *7.2 16 9.2 77 77 604 582 155 119 62 54 9.2 4.0 6.8 17 *7.8 56 205 *536 575 135 227 57 50 9.2 6.8 4.5 18 7.8 49 467 431 650 150 215 54 28 7.1 6.4 4.5 19 7.1 45 899 365 518 126 255 59 27 10 6.8 4.7 20 7.4 38 *887 319 *424 125 452 53 28 1° .7 4.5 21 6.9 34 662 262 360 123 408 50 25 8.0 1.4 4.5 22 7.1 32 571 219 348 117 345 47 21 7.6 1.1 4.5 23 17 28 452 269 528 117 341 47 19 6.5 .6 2.7 24 43 27 495 392 500 117 315 45 28 5.1 .7 .2 25 3T *26 634 369 671 124 280 47 56 6.0 4.5 5.0 26 26 26 *914 324 665 150 .233 *44 52 6.7 .7 6.4 27 19 25 697 319 528 124 194 53 29 6.5 .2 4.7 28 15 30 691 490 444 117 166 51 26 4.6 .1 4.5 29 13 27 582 602 - 117 153 53 27 4.1 .6 2.9 30 15 28 461 863 124 144 45 28 3.8 7.7 .1 31 15 374 955 155 47 5.7 7.7 Total 382,3 1,275 11,266 11,571 13,648 5,045 6,299 2,271 1,166 517.4 98.9 121.1 Mean 12.3 42.5 363 373 487 163 210 73.3 38.9 10.2 5.19 4.04 Cfsm O.28O 0.966 8.25 8.48 11.1 3.70 4.77 1.67 0.884 0.232 0.072 0.092 In. 0.32 1.08 9.52 9.78 11.54 4.26 5.32 1.92 0.99 0.27 0.08 0.1O Ac-ft 758 2,530 22,350 22,950 27,070 10,010 12,490 4,500 2,310 630 196 240 Calendar year 1957: Max 1.2OO Mln 2.6 Mean HI Cfsm 2.52 In. 34.16 Ac-ft 8O.17O Water year 1957-58: Max 933 Mln 0.1 Mean 146 Cfsm 3.32 In. 45.18 Ac-ft 106,0oo Peak discharge (base, 1,100 cfs). Dec. 19 (9 p.m.) 1,290 cfs (11.96 ft); Dec. 26 (1:50 a.m.) 1,110 cfs (10.22 ft).______* Discharge measurement made on this day. 166 WILLAMETTE RIVER BASIN

2035. Tualatin River near Dilley, Oreg.

Location. Lat 45°28'30", long 123°07'25", in NW£ sec. 24, T. 1 S., R. 4 W. , on left bank 5 ft upstream from county road bridge, 1 mile south of Dilley, and l£ miles downstream from Scoggin Creek. Drainage area. 133 sq mi. Records available. October 1939 to September 1958. Prior to October 1940 monthly discharge only, published in WSP 1318. Gage.--Water-stage recorder. Datum of gage is 151.57 ft above mean sea level, datum of TT929, supplementary adjustment of 1947. Prior to June 16, 1950, chain, wire-weight, or staff gages at several sites within 200 ft of present site at same datum. Average discharge. 19 years, 400 cfs (289,600 acre-ft per year). Extremes. Maximum discharge during year, 3,880 cfs Dec. 20 (gage height, 12.97 ft); mini mum, 0.9 cfs Aug. 24. 1939-58: Maximum discharge, 13,200 cfs Dec. 22, 1955 (gage height, 14.78 ft); mini mum, 0.4 cfs Sept. 5, 1951. Remarks. Records good except those for periods of shifting control or backwater from debris, which are fair. Diurnal fluctuation caused by dam below Gaston. Diversions above station for municipal water supply and irrigation, chiefly in Wapato Lake area.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 14 34 154 895 2,400 1,050 460 459 97 56 2.0 4.2 2 15 31 330 791 1,780 915 578 425 90 46 2.4 4.3 3 16 30 253 707 1,370 814 721 391 101 41 4.2 4.2 4 17 29 203 610 1,080 744 719 363 87 34 *4.3 4.0 5 18 28 173 526 925 677 650 332 80 31 3.4 5.0 6 26 28 374 464 831 611 571 308 150 26 3.2 4.3 7 26 29 1,060 435 810 547 499 288 191 21 3.0 3.7 8 22 30 902 436 803 574 452 269 124 20 3.3 3.6 9 24 30 676 450 1,060 589 417 251 126 20 2.9 2.5 10 23 37 480 451 1,620 547 418 238 111 *25 5.3 3.3 11 16 213 370 590 1,400 532 383 230 107 26 4.5 9.2 12 16 302 309 960 1,970 498 354 220 99 22 3.4 7.6 13 34 474 264 1,070 1,970 468 331 206 89 22 2.6 8.2 14 36 427 239 1,040 1,740 440 *311 191 86 21 2.0 14 15 26 357 216 2,030 1,550 411 300 176 79 17 1.8 *17 16 21 255 217 *1,820 1,740 389 354 156 70 14 1.5 18 17 *19 188 370 1,640 1,740 374 496 146 60 13 2.5 TT 18 18 162 974 1,290 1,880 367 671 140 57 12 2.9 14 19 17 140 1,660 1,050 1,620 363 677 144 56 14 3.2 15 20 18 119 *3,140 910 *1,280 349 921 129 60 14 1.8 15 21 18 100 2,030 822 1,060 353 1,130 117 56 13 1.9 14 22 17 92 1,820 754 979 333 997 110 53 11 1.8 14 23 30 84 1,360 706 945 321 938 110 43 9.2 1.1 13 24 92 78 1,280 930 1,170 325 885 107 56 5.3 1.0 10 25 68 *74 1,580 1,030 1,720 338 855 109 78 6.3 2.2 11 26 62 72 2,280 935 1,660 371 803 *99 63 4.8 1.9 15 27 45 68 1,880 881 1,440 355 743 104 59 5.9 1.1 14 28 38 82 1,800 1,220 1,180 330 660 105 56 5.0 1.1 12 29 34 84 1,700 1,640 - 318 574 108 52 3.0 1.3 10 30 34 78 1,340 2,280 346 506 94 50 2.2 2.3 7.4 31 38 1,060 2 , 680 354 94 3^ Total 898 3,755 30,494 32,043 39,723 14,983 18,374 6,219 2,486 564.2 80.2 294.5 Mean 29.0 125 984 1,034 1,419 483 612 201 82.9 18.2 2.59 9.82 Cfsra 0.218 0.940 7.40 7.77 10.7 3.63 4.60 1.51 0.623 0.137 0.019 0.074 In. 0.25 1.05 8.53 8.96 11.11 4.19 5.14 1.74 0.70 0.16 0.02 0.08 Ac-ft 1,780 7,450 60,480 63,560 78,790 29,720 36,440 12,340 4,930 1,120 159 584 Calendar year 1957: Max 3,280 Mln 3.8 Mean 317 Cfsm 2.38 In. 32.30 Ac-ft 229 200 water year 1957-58: Max 3,140 Mln 1.0 Mean 411 Cfsra 3.09 In. 41.93 Ac-ft 297,400 Peak discharge (base, 4,000 cfs). --No peak above base. * Discharge measurement made on this day. Note. Shifting control or backwater from debris Oct. 1-6, Nov. 14 to Jan. 12, Feb. 24 to Apr. 20, July 17 to Sept. 30. WttLAMETTE RIVER BASIN 167

2065. Tualatin River at Farmington, Oreg.

Location. Lat 45°27'00", long 122 0 57'00", in SE£ sec. 29, T. 1 S., R. 2 W. , on upstream side of highway bridge at Farmington, 5| miles southeast of Hillsboro. Drainage area-. 568 sq mi. Records available. October 1939 to September 1958 (discontinued). Gage.--Wire-weight gage read twice daily. Datum of gage is 100.42 ft above mean sea level, datum of 1929. Prior to Oct. 1, 1940, staff gage at same site at datum 2.00 ft higher. Oct. 1, 1940, to Mar. 30, 1955, staff gage at present site and datum. Aux iliary staff gage read twice daily at highway bridge 65 miles downstream. Average discharge. 19 years, 1,355 cfs (981,000 acre-ft per year). Extremes. Maximum discharge during year, 8,470 cfs Feb. 2; maximum gage height, 30.85 ft Feb. 2; no flow Aug. 4-7, Aug. 10 to Sept. 6. 1939-58: Maximum discharge, 24,200 cfs Dec. 22, 1955 (gage height, 36.03 ft, from floodmark); no flow Aug. 4-7, Aug. 10 to Sept. 6, 1958. Maximum stage known, about 37 ft (present datum) at Farmington and 33.4 ft at gage near Scholls, Dec. 22 or 23, 1933. Remarks. Records good. Slight regulation by log ponds and dam below Gaston has little eTTect at this station; considerable pondage between this station and station near Willamette. Some diversions by pumping for irrigation above station, chiefly at Wapato Lake near Gaston. Revisions (water years).--WSP 1248: 1941.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 53 115 262 5,060 7,500 4.950 1,110 1,410 292 183 11 0 2 50 110 *407 4,570 8,220 4,760 1,250 1,230 *517 TT? 6.8 0 3 50 104 709 3,850 7,560 4,800 1,440 1,110 280 160 4.0 0 4 54 100 646 3,170 6,440 4,240 1,600 1,050 273 146 *0 0 5 60 97 525 2,730 5,840 3,810 1,590 942 273 152 0 0 6 71 92 541 2,420 5,150 3,230 1,550 867 280 113 0 0 7 77 91 938 1,940 4,860 2,940 1,500 814 582 91 0 5.2 8 88 100 1,370 1,630 4,620 2.580 1,390 756 418 77 1.0 6.1 9 93 124 1,620 1,350 4,610 2,260 1,260 699 544 *63 1.5 11 10 81 160 1,530 1,520 5,640 2,080 1,180 657 56T 63 0 16 11 79 212 1,260 1,350 5,680 1,890 1,100 604 382 61 0 17 12 75 296 916 1,740 4,100 1,770 1,060 571 357 60 0 20 13 72 577 744 2,180 4,700 1,660 1,010 544 317 60 0 24 14 75 896 673 2,480 5,200 1,540 940 516 293 64 0 31 15 108 926 628 2,770 5,560 1,440 955 485 275 71 0 38 16 96 767 553 5,200 5,800 1,360 982 457 249 76 0 46 17 *83 586 543 *3,920 6,020 1,290 1,190 424 234 82 0 55 18 72 446 823 3,960 6,150 1,250 1,530 393 217 88 0 61 19 70 362 1,660 4,150 6,230 1,180 1,720 366 206 81 0 *65 20 67 314 2,420 4,470 6,040 1,130 2,040 356 197 72 0 48 21 66 283 *3,040 4,580 *5,820 1,100 2,320 340 185 61 0 38 22 74 251 3,860 4,240 5,470 1,120 2,540 298 176 53 0 40 23 86 241 4,750 5,610 5,160 1,140 2,650 285 180 45 0 48 24 82 228 5,020 5,530 4,630 1,180 2,620 275 197 58 0 51 25 141 196 5,180 3,370 4,790 1,290 2,540 271 205 50 0 60 26 149 191 5,090 3,500 5,110 1,220 2,370 278 217 25 0 67 27 155 184 5,010 5,240 5,360 1,170 2,230 278 227 20 0 74 28 154 188 5,280 5,570 5,520 1,140 2,080 300 221 19 0 62 29 130 195 5.650 5,590 - 1,180 1,840 317 210 17 0 55 30 119 224 5,600 4,400 1,150 1,580 509 202 15 0 50 31 115 5,200 5,270 1,100 296 13_ 0 Total 2,745 8,656 72,428 100,740 153,560 62,930 49,145 17,476 8,147 2,249 24.3 986.5 Mean 88.5 289 2,336 5,250 5,484 2,030 1,638 564 272 72.5 0.78 32.9 Cfsm 0.156 0.509 4.11 5.72 9.65 3.57 2.88 0.995 0,479 0.128 0.0014 0.058 In. 0.18 0.57 4.74 6.60 10.05 4.12 3.22 1.14 0.53 0.15 0.002 0.06 Ac-ft 5,440 17,170 143,700 199,800 304,600 124,800 97,480 54,660 16,160 4,460 48 1,960 Calendar year 1957: Max 7,250 Min 16 Mean 1,000 Cfsm 1.76 In. 23.92 Ac-ft 724,300 Water year 1957-58: Max 8,220 Min o Mean 1,313 Cfsm 2.31 In. 31.36 Ac-ft 950,300 * Discharge measurement or observation of no flow made on this day. 168 WILLAMETTE RIVER BASIN

2075. Tualatin River near Willamette, Oreg.

Location. Lat 45°21'05", long 122°40'35", in SW£ sec. 34, T. 2 S., R. 1 E., on left bank 300 ft upstream from county bridge, 1 mile northwest of Willamette, and If miles upstream from mouth. Drainage area. 710 sq mi. Records available.--July 1928 to September 1958. Gage. Water-stage recorder. Datum of gage is 85.61 ft above mean sea level (levels by Corps of Engineers). Prior to June 12, 1941, staff gage at datum 1.02 ft higher. Average discharge. 30 years, 1,483 cfs (1,074,000 acre-ft per year). Extremes. Maximum discharge during year, 7,620 cfs Feb. 4; minimum daily, 15 cfs Aug. 16-19, 22, Sept. 2, 3. 1928-58: Maximum discharge, 29,300 cfs Dec. 23, 1933; minimum daily, that of Aug. 16-19, 22, Sept. 2, 3, 1958. Remarks. Records good. All records herein include flow of Oswego Canal which diverts water 4j miles above station for recreational use in Oswego Lake and development of power between outlet of that lake and Willamette River, to which water is returned. Some regulation in low-water season by flashboards on crest of diversion dam for Oswego Canal. Several small diversions above station for Irrigation. Revisions (water years) . WSF 1014: 1943. WSP 1184: 1947. WSP 1248: 1941.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 66 138 292 5,920 6,480 5.920 1,310 1,860 407 239 29 16 2 75 133 *398 5,620 7,020 5,840 1,400 1,640 *387 238 26 15 3 76 129 656 5,210 7,490 5,680 1,620 1,460 375 226 23 15 4 78 124 788 4,680 7,560 5,310 1,850 1,320 370 202 22 18 5 84 117 685 4,040 7,260 4,890 1,960 1,220 328 171 20 18 6 87 114 658 3,380 6,700 4,360 1,940 1,120 384 150 19 21 7 93 110 908 2,720 6,120 3,810 1,850 1,050 508 136 19 23 8 97 108 ,510 2,110 5,560 3,360 1,730 982 803 130 *18 26 9 103 108 ,900 1,800 5,140 3,000 1,580 925 774 122 18 29 10 107 112 ,900 1,710 4,930 2,730 1,440 866 631 117 18 28 11 109 146 ,650 1,760 4,670 2,500 1,350 810 537 *108 18 29 12 111 215 ,270 2,190 5,090 2,290 1,270 760 482 101 17 32 13 115 492 ,000 2,900 5,570 2,120 l,20p 731 452 97 17 34 14 114 846 831 3,300 5,670 1,950 1,160 694 414 90 16 38 15 119 1,020 717 3,670 5,830 1,810 *1,120 647 381 85 16 44 16 129 962 667 3,980 6,330 1,680 1,190 618 364 84 15 51 17 127 786 653 4,780 6,540 1,600 1,420 576 332 75 15 57 18 *119 592 878 *5,200 6,740 1,520 1,850 536 300 70 15 *62 19 111 475 2,150 5,440 6,730 1,440 2,290 512 271 67 15 66 20 109 401 3,540 5,540 6,630 1,370 2,800 498 190 64 16 68 21 107 358 4,190 5,450 *6,450 1,320 3,300 481 141 62 16 68 22 106 316 4,820 5,180 6,240 1,320 3,490 456 147 63 15 67 23 111 290 5,140 4,910 5,930 1,330 5,550 431 161 62 16 67 24 114 268 5,340 4,850 5,700 1,400 3,470 414 191 59 16 69 25 131 250 5,440 4,530 5,710 1,530 5,380 403 216 56 16 68 26 201 241 5,610 4,300 5,750 1,530 3,260 399 247 52 16 69 27 217 252 5,540 4,170 5,780 1,450 3,050 407 269 48 16 69 28 197 230 5,610 4,330 5,840 1,390 2,800 419 253 43 16 70 29 170 232 5,810 4,750 - 1,320 2,470 432 234 39 16 71 30 159 248 5,250 1.500 2,140 436 236 36 16 71 31 146 6^080 5_,_?2Q 1,330 428 52 16 Total 3,688 9,793 82,621 129,600 171,460 78,400 63,220 23,531 10,785 3,124 547 1,379 Mean 119 326 2,665 4,181 6,124 2,529 2,107 759 360 101 17.6 46.0 Cfsra 0.168 0.459 3.75 5.89 8.63 3.56 2.97 1.07 0.507 0.142 0.025 0.065 In. 0.19 0.51 4.33 6.79 8.98 4.11 3.31 1.23 0.56 0.16 0.03 0.07 Ac-fb 7,320 19,420 163,900 257,100 340,100 155,500 125,400 46,670 21,390 6,200 1,080 2,740 Calendar year 1957 : Max 6,640 Min 37 Mean 1,172 Cfsra 1.65 In. 22.42 Ac-ft 848,600 Water year 1957-58: Max 7,560 Min 15 Mean 1,584 Cfsra 2.23 In. 30.27 Ac-ft 1,147,000 Discharge measurement made on this day. WILLAMETTE RIVER BASIN 169

2080. Clackamas River at Big Bottom, Oreg.

Location. La t 45°01'00", long 121°55'00", in SE^ sec. 26, T. 6 S., R. 7 E., on right bank Just downstream from Pot Creek at lower end of Big Bottom, half a mile upstream from site of proposed dam and 28 miles southeast of Estacada. Inflow between gage and meas uring section 3,000 ft downstream is included in records. Drainage area. 136 sq mi 'at cableway half a mile downstream, where all discharge measure- menfs are made. Records available . April 1920 to September 1958. Monthly discharge only April 1980, pub- llshed in WSP 1318 . Gage. Water-stage recorder. Datum of gage is 3,057.56 ft above mean sea level, datum of TT929 (Public Roads Administration bench mark) . Average discharge. 38 years, 476 cfs (344,600 acre-ft per year). Extremes . Maximum discharge during year, 8,980 cfs Apr. 80 (gage height, 6.45 ft), from rating curve extended above 1,800 cfs by logarithmic plotting; minimum, 831 cfs Sept. 7, 8. 1920-58: Maximum discharge, 6,750 cfs Mar. 31, 1931, Dec. 15, 1946, from rating curves extended above 3,500 and 1,700 cfs, respectively; maximum gage height, 8.96 ft Dec. 81, 1955; minimum discharge, 184 cfs Sept. 12, 1948. Remarks . Records fair. No regulation or diversion above station. Cooperation. Water-stage recorder graph and 11 discharge measurements furnished by Portland General Electric Co. Revisions (water years) .--WSP 1218: Drainage area. WSP 1848: 1943.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) (Backwater from moss and vegetal growth Oct. 1 to Nov. 12) Oct. 1 to Nov. 12 Nov. 13 to Sept. 30 1.6 215 1.7 225 4.0 1,230 2.1 365 2.8 615 6.0 2,590 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 261 *240 306 651 995 760 413 660 *538 340 *264 246 2 264 240 360 597 895 705 413 675 542 332 261 243 3 270 238 326 554 820 665 406 690 490 326 261 240 4 *255 235 312 518 755 624 399 700 466 322 261 240 5 252 235 306 490 725 606 392 710 466 318 258 240 6 255 235 496 469 700 566 385 710 570 312 258 237 7 258 235 1,080 452 715 546 385 695 534 303 255 237 8 255 235 730 444 740 518 388 730 486 294 255 237 9 255 235 562 430 785 498 392 765 476 291 252 237 10 246 243 490 444 900 483 434 780 458 291 252 237 11 243 288 448 498 860 472 448 790 448 288 252 237 12 243 354 420 690 1,150 458 452 725 441 288 249 E40 13 261 633 396 651 1,130 452 472 651 434 285 249 249 14 258 466 410 633 990 441 498 624 420 285 249 255 15 246 382 396 970 1,110 430 494 642 410 282 249 252 16 243 336 399 885 1.420 424 *546 685 402 282 249 249 17 243 312 427 1,090 1,340 416 840 725 392 282 249 252 18 240 315 444 990 1,330 410 920 755 388 279 252 246 19 240 329 981 855 1,200 406 1,000 775 382 279 252 252 20 258 309 1,690 765 1,090 402 2.290 765 374 279 249 246 21 238 300 1,290 680 1,010 406 2,110 760 371 276 249 252 22 243 297 895 624 965 406 1,480 755 364 276 249 249 23 249 294 725 685 975 406 1,160 790 360 276 249 249 24 246 291 735 880 1,080 424 985 730 382 276 249 246 25 255 291 945 825 1,210 427 875 690 385 273 249 243 26 255 294 1,190 755 1,050 420 795 665 364 273 249 243 27 246 291 940 705 920 416 730 685 357 273 249 243 28 243 291 1,080 1,020 *820 416 680 610 354 270 249 240 29 243 *282 995 1,350 - 416 *660 566 *346 267 249 240 30 243 285 830 1,300 *424 651 534 346 264 249 240 C-CQ n"c A 31 240 *730 1,130 416 bOO 2b4 *249 Total 7,727 9,011 21,334 23,030 27,680 14,859 22,093 21,595 12,746 8,946 7,815 7,317 Mean 249 300 688 743 989 479 736 697 425 289 252 244 Cfsm 1.83 2.21 5.06 5.46 7.27 3.52 5.41 5.12 3.12 2.12 1.85 1.79 In. 2.11 2.46 5.83 6.30 7.57 4.06 6.04 5.91 3.49 2.45 2.14 2.00 Ac-ft 15,330 17,870 42,320 45, 680 54,900 29,470 43,820 42,830 25,280 17,740 15,500 14,510 Calendar year 1957: Max 2,170 Min 232 Mean 464 Cfarn 3.41 In. 46.31 Ac-ft 335,900 Water year 1957-58: Max 2,290 Mln 235 Mean 505 Cfsm 3.71 In. 50.36 Ac-ft 365,200

Discharge measurement made on this day.

534540 O -60 - 12 170 WILLAMETTE RIVER BASIN

Reservoirs in Willamette River basin, Oreg.

Haskins Creek Reservoir.--Lat 45°18'40", long 123°21'15", in NW^ sec. 18, T. 3 S., R. 5 W., on control tower 250 ft upstream from dam on Haskins Creek and 11 miles north west of McMinnville. Drainage area, 7.1 sq mi, approximately. Records available, October 1951 to September 1958. Staff gage read once daily. Datum of gage is at mean sea level (levels by city of McMinnville). Maximum contents observed during year, 744 acre-ft Dec. 6, Apr. 22, 29 (elevation, 835.5 ft); reservoir empty Dec. 16-18, Dec. 21 to Mar. 30, Apr. 5. 6. Maximum contents observed during period 1951-58, 748 acre-ft Nov. 17, 1954 (elevation, 835.65 ft); reservoir empty most of time during winter months. Reservoir is formed by earth-fill dam equipped with 5 siphon spillways which act as overflow weirs until priming occurs (approximately 835.5 ft elevation). Capacity of reservoir is 733 acre-ft between elevations 761.5 (invert of outlet tunnel) and 835.0 ft (crest of siphon spillways). Rated capacity of three siphons is 700 cfs each and remaining two, 350 cfs each. Under normal operation, reservoir is filled in the spring (April or May) and drained when fall rains start. There is no planned storage during winter months; however, during periods of heavy runoff, inflow may be greater than capacity of outlet tunnel and there may be some temporary storage. Water is used for municipal supply of city of McMinnville. Timothy Lake.--Lat 45°06'50", long 121°48'35", in NE-j sec. 27, T. 5 S., R. 8 E., in intake structure 350 ft upstream from dam on Oak Grove Fork, 0.5 mile upstream from Anvil Creek, and 14 miles south of Government Camp. Drainage area, 53.5 sq mi. Rec ords available, May 1956 to September 1958. Prior to October 1957, published as Timothy Meadows Reservoir. Once-daily readings of Bristol pressure gage usually obtained by Three Lynx powerhouse personnel by microwave transmission. Datum of gage is at mean sea level (Portland General Electric Co. bench mark). Prior to Nov. 26, 1956, staff gage at same site and datum. Maximum contents observed during year, 66,820 acre-ft May 13, 14, 18-24, 27 (elevation, 3,190.8 ft); minimum observed, 39,920 acre-ft Dec. 18, 19 (elevation, 3,169.3 ft). Maximum contents observed during period 1956-58, that of May 13, 14. 18-24, 27, 1958; minimum observed, 16,010 acre-ft Feb. 24, 1957 (elevation, 3,144.5 ft). Reservoir is formed by earth-fill dam with concrete spillway built by Portland General Electric Co. Usable storage began May 28, 1956. Capacity, 65,710 acre-ft at elevation 3,190.0 ft (normal maximum operating level). Usable capacity, 61,650 acre-ft between elevations 3,125.0 (invert of outlet pipe) and 3,190.0 ft (top of taintor gates). Storage of 4,060 acre-ft below elevation 3,125.0 ft not normally available for release. Water is used for power generation.

Month-end elevation and contents, water year October 1957 to September 1958 Usable Change In Total Change In Elevation contents contents Elevation contents contents Date (feet)t (acre-feet) (acre-feet) (feet)t (acre-feet) (acre-feet) Haskj ns Creek Re servoir Timothy Lake 827.4 571 _ 3,183.1 56,580 _ 3,179.3 51,800 735 3,172.2 43,260 -8,540 Dec. 31...... 0 -735 3,172.7 43,850 +590 Calendar year 1957 ...... - - 0 - - +12,350 46,450 +2,600 +22 54,420 -2 , 540 835.4 742 3,189.1 64,480 65,710 66,130 +420 -157 65,990 -140 820.2 442 -42 3,188.3 63,400 -2,590 Water year 1957-58...... - - -129 - - +6,820 t Gage read at 4 p.m. t Gage read at 8 a.m. WILLAMETTE RIVER BASIN 171

2087. Oak Grove Fork near Government Camp, Oreg.

Location. Lat 45°06'50", long 121°48'50", in NE£ sec. 27, T. 5 S., R. 8 E., on right bank 0.1 mile upstream from Anvil Creek, 0.3 mile downstream from Timothy Lake, and 14 miles south of Government Camp. Drainage area. 54.3 sq mi. Records available.--July 1956 to September 1958. Gage. Water-stage recorder. Datum of gage is 3,041.83 ft above mean sea level (Portland General Electric Co. bench mark). Extremes. Maximum discharge during year, 410 cfs Nov. 10 (gage height, 2.87 ft); minimum daily, 36 cfs Oct. 12, 13. 1956-58: Maximum discharge, that of Nov. 10, 1957; minimum daily, 24 cfs for many days in 1956. Remarks. Records fair. Regulation by Timothy Lake (see p. 170). No diversion above station. Cooperation. Water-stage-recorder graph and 8 discharge measurements furnished by Port- land General Electric Co.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Nov Nov. 11 to Sept. 3O 1.3 1.3 1.5 1.5 2.0 120 2.0 124 2.5 236 2.5 260 3.0 446 3.0 473 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. I 40 *191 257 108 47 90 44 40 174 109 53 *48 2 89 38 247 126 46 252 41 40 TIT 140 *54 47 3 96 38 278 149 46 177 39 40 155 88 54 47 4 155 38 275 149 46 111 39 39 158 42 54 46 5 *155 44 282 166 64 110 39 42 168 11 54 45 6 153 47 139 176 83 126 39 74 38 42 53 46 7 14O 46 43 190 63 140 39 85 68 64 52 45 8 132 46 43 185 51 144 39 103 102 83 52 42 9 144 46 69 173 45 154 39 120 154 83 52 42 10 150 251 168 192 45 163 40 124 161 83 51 43 11 109 257 190 159 45 174 40 130 163 74 51 44 12 36 213 212 102 46 176 40 134 171 67 51 43 13 36 55 215 174 47 182 40 132 71 67 51 43 14 100 142 212 128 47 190 40 130 38 64 50 43 15 155 257 221 65 48 193 *40 128 38 51 49 58 16 181 253 221 90 49 196 40 110 66 43 48 186 17 179 260 195 46 49 190 41 106 68 43 49 79 18 155 260 196 45 49 196 41 113 83 43 49 115 19 113 244 76 45 48 199 42 119 83 44 49 128 20 110 271 44 71 47 205 49 122 38 44 49 128 21 105 267 46 106 47 202 47 124 38 44 49 89 22 74 271 42 125 47 202 45 134 38 46 49 196 23 51 271 41 84 47 202 44 124 65 48 49 225 24 66 275 55 47 47 188 43 130 84 47 49 172 25 99 278 47. 46 47 176 42 126 84 47 49 48 26 124 282 49 56 47 163 42 138 84 52 47 111 27 124 290 48 72 47 171 41 154 85 54 47 51 28 144 286 49 46 48 171 41 166 85 53 47 50 29 165 *297 48 48 _ 171 41 185 81 52 47 49 30 188 290 47 48 ----- 171 *41 188 *72 53 48 106 »-] -JC 31 206 76 47 101 *1 I O 53 48 Total 3,774 5,804 4,131 3,264 1,388 5,286 1,238 3,576 2,870 1,864 1,554 2,415 Mean 122 193 133 105 49.6 171 41.3 115 95.7 60.1 50.1 80.5 Ac-ft 7,490 11,510 8,190 6,470 2,750 10,480 2,460 7,09O 5,690 3,700 3,080 4,790

Adjusted for change In contents of Timothy Lake Mean 44.1 49.9 143 148 239 129 210 144 86.2 67.0 47.8 37.0 Cfsm 0.812 0.919 2.63 2.73 4.40 2.38 3.87 2.65 1.59 1.23 0.880 0.681 In. 0.94 1.03 3.03 3.14 4.58 2.74 4.32 3.07 1.77 1.42 1.02 0.76 Ac-ft 2,710 2,970 8,780 9,070 13,260 7,940 12,520 8,880 5,130 4,120 2,940 2,200

Calendar year 1957: Max 298 Mln 29 Mean 95.0 Ac-ft 68,780 Water year 1957-58: Max 297 Mln 36 Mean 1O2 Ac-ft 73,700 Adjusted Calendar year 1957: Mean 112 Cfsm 2.06 In. 28.03 Ac-ft 81,130 Water year 1957-58: Mean 111 Cfsm 2.04 In. 27.82 Ac-ft 80,520 Discharge measurement made on this day. 172 WILLAMETTE RIVER BASIN

2090. Oak Grove Pork above powerplant intake, Oreg.

Location. Lat 45°04'30", long 121 WOO", in SWv sec . 3 , T. 6 S. , R. 7 E. , on right bank Just upstream from Spring Creek, two-thirds of a mile upstream from Kink Creek, 1 mile upstream from intake of power development of Portland General Electric Co., and 24 miles southeast of Estacada. Records include flow of Spring Creek. Drainage area. --12 6 sq mi, includes that of Spring Creek. Records available. May 1909 to September 1958. Published as both Oak Grove Pork of Clackamas River at proposed intake, near Cazadero and Oak Grove Pork of Clackamas River at intake, near Cazadero May 1909 to September 1910, as Oak Grove Pork of Clackamas River at intake, near Cazadero October 1910 to September 1921, and as Oak Grove Pork at Portland Electric Power Co.'s intake October 1921 to September 1929. Monthly dis charge only for some periods, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 2,052.31 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. May 21, 1909, to Nov. 17, 1911, staff gage and Mar. 26, 1912, to Sept. 30, 1923, water-stage recorders, at various sites three- quarters of a mile downstream, below Kink Creek, at different datum. Average discharge. --49 years, 508 cfs (367,800 acre-ft per year). Extremes. Maximum discharge during year, 1,670 cfs Apr. 20 (gage height, 3.86 ft); minimum daily, 254 cfs Nov. 7-9. 1909-58; Maximum discharge, 5,000 cfs Jan. 7, 1923 (gage height, 5.45 ft, site and datum then in use), computed from flow at stations on Clackamas River; minimum, 236 cfs Oct. 15, 16, 18, 1931 (gage height, 1.42 ft). Remarks. Records good. Plow regulated by Timothy Lake beginning in 1956 (see p. 170). No diversion above station. Cooperation. Water-stage recorder graph and 12 discharge measurements furnished by Portland General Electric Co. Revisions (water years). WSP 1248: 1909, 1910(M) , 1916, 1918, 1923, 1932.

Rating table, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) 1.9 240 3.0 2.2 355 4.0 1,810 2.5 510 Discharge, tember 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 268 *462 552 534 570 552 360 498 528 357 295 272 2 344 275 528 534 534 733 360 492 504 405 *295 272 3 348 261 570 540 504 696 355 492 480 368 295 272 4 *420 258 570 528 474 546 347 486 486 507 299 268 5 420 258 552 534 468 540 545 486 492 503 299 268 6 420 258 649 540 474 54O 343 516 430 315 295 268 7 415 254 752 546 480 540 545 534 391 325 295 268 8 405 254 516 540 474 540 545 558 420 547 295 264 9 410 254 450 510 480 540 555 584 462 547 295 264 10 420 426 522 552 534 540 596 598 486 543 291 264 11 391 516 540 528 510 546 40O 605 480 351 287 268 12 291 528 546 498 633 546 400 591 486 525 287 268 13 299 445 540 540 688 546 415 564 578 525 287 272 14 345 430 546 540 605 552 420 552 527 519 287 295 15 396 552 540 516 672 552 *420 546 515 507 287 295 16 430 534 546 546 872 552 455 554 555 295 285 415 17 440 534 516 640 840 546 534 528 559 295 285 547 18 410 540 528 584 832 546 522 554 555 295 285 551 19 355 522 820 534 768 552 577 540 555 '29T291 285 578 20 355 546 912 522 712 552 1,560 540 507 285 575 21 355 540 736 534 672 552 1,190 554 299 291 279 551 22 339 546 564 540 640 552 960 546 299 295 279 409 23 283 540 492 552 633 564 816 540 525 295 279 480"528 24 307 540 528 584 672 558 756 522 355 291 279 25 339 540 605 552 744 534 656 504 351 291 279 295 26 368 540 712 528 664 510 598 522 547 295 275 559 27 364 546 591 540 *598 516 558 554 543 299 275 299 28 382 546 656 626 552 522 528 540 343 295 275 287 29 410 *552 605 784 - 522 516 554 *359 295 275 285 30 435 552 *540 *712 *516 *498 540 555 295 307 31 462 633 450 *534 295 *275 Total 11,626 13,549 18,246 17,391 17,299 17,053 16,084 16,628 11,690 9,722 8,849 9,520 Mean 375 452 589 561 618 550 556 536 390 514 285 317 Ao-ft 23,060 26,870 36,190 34,490 34,310 33,820 31 , 900 32,980 23,190 19,280 17,550 18,880 Calendar year 1957; Max 996 Min 240 Mean 424 Ac-ft 3O6,9oO Water year 1957-58; Max 1,360 Min 254 Mean 459 Ac-ft 332, 5OO Discharge measurement made on this day. WILLAMETTE RIVER BASIN 173

2095. Clackamas River above Three Lynx Creek, Oreg.

Location. Lat 45"07'30", long 122°04'20", in NE£ sec. 21, T. 5 S., R. 6 E., on right bank Just downstream from powerplant, 500 ft upstream from Three Lynx Creek and 17 miles southeast of Estacada. Drainage area. 479 sq mi. Records available. April 1909 to December 1913, October 1921 to September 1958. Prior to October 1911 monthly discharge only, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,091.69 ft above mean sea level, datum of 1929, supplementary adjustment of 1947 (levels by Portland General Electric Co.). Apr. 23, 1909, to Jan. 4, 1914, staff gage at about same site and datum. Average discharge. 41 years, 1,940 cfs (1,405,000 acre-ft per year). Extremes.--Maximum discharge during year, 16 600 cfs Apr. 20 (gage height, 10.07 ft); minimum, 355 cfs Sept. 30; minimum daily, 460 cfs Sept. 7. 1909-13, 1921-58: Maximum discharge, 34,800 cfs Mar. 31, 1931 (gage height, 15.5 ft), from rating curve extended above 11,000 cfs; minimum observed, that of Sept. 30, 1958; minimum daily, that of Sept. 7, 1958. Remarks. Records excellent. Water diverted from Oak Grove Fork is used in powerplant on Clackamas River just above station. Minor regulation since 1956 by Timothy Lake (see p. 170). Considerable diurnal fluctuation during periods of low flow. Cooperation. Water-stage recorder graph and 12 discharge measurements furnished by Port- land General Electric Co. Revisions (water years). WSP 1184: Drainage area. WSP 1248: 1910(M), 1912, 1948-50(m).

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 8O4 87O 1.320 2,710 *4, 770 2.660 1,560 2.37O 1,750 1.100 766 548 2 904 *740 1,770 2,440 3,660 2,770 1.59O 2,400 1,69O 1.O8O *738 677 3 936 538 1,560 2,220 3,410 2,670 1,600 2,440 1,680 1,030 74O 695 4 *90O 736 1,44O 2,04O 3,07O 2,28O 1,500 2,43O 1,6OO 752 742 700 5 909 682 1,390 1,950 2,950 2,210 1,440 2,440 1,540 875 737 749 6 87O 678 2,890 1,840 2,920 2,08O 1.200 2,470 1,810 822 73O 658 7 394 680 7,620 1,740 3,100 2,020 1,380 2,380 1,660 1.O8O 724 460 8 396 678 4,110 1,750 3,340 1,960 1,380 2,510 1,340 818 720 755 9 930 66O 2,930 1-.720 3,630 1,860 1,390 2,690 1,57O 832 714 700 10 877 876 2,350 1,780 4,50O 1,810 1,68O 2,680 1,520 830 715 670 11 840 1,210 2,OOO 2,350 4,170 1,740 1,830 2.740 1,480 812 653 480 12 7O6 1,620 1,830 3,680 6,410 1,710 1,750 2,490 1,470 814 680 796 13 772 4.O6O 1,72O 3,460 6,550 1,66O 1,72O 2,21O 1,410 774 716 684 14 1.010 2,790 1,660 3,2OO 4,810 1,620 2,030 2,O70 1,210 770 680 5O4 15 9T6 2,13O 1,600 5,080 5,190 1,580 1,920 2,110 994 776 675 840 16 898 1,730 1,640 4,45O 7,560 1,540 2,140 2,260 1,150 770 637 739 17 879 1,49O 1,810 6,150 6,630 1,54O 3,67O 2,360 1,160 725 514 755 18 874 1,510 2,O10 5,050 6,610 1.500 4,380 2,360 1,12O 748 672 791 19 8O2 1,650 6,O40 3.91O 5,390 1,500 4,08O 2,510 1,120 744 674 7 9O 20 664 1,500 11,400 3,330 4,540 1,500 11.900 2,410 1,140 700 674 765 21 730 1,400 7,350 2,88O 4,010 1,550 10,400 2,380 1,O3O 799 670 650 22 705 1,310 4,520 2,540 3,680 1,580 6,73O 2,320 815 780 669 894 23 720 1,290 3,440 2,840 3,640 1,600 4,970 2,400 1,050 786 663 960 24 730 1,220 3,55O 4,210 4,O70 1,700 4,O70 2,210 1,O8O 786 614 553 25 86O 1,240 5,130 3,950 5,160 1,750 3,490 2,000 1,110 778 680 750 26 873 1,250 7,160 3,430 4,390 1,730 3,O70 2,O9O 1,090 775 707 76O 27 841 1,190 4,830 3,140 3,7OO 1,680 2,740 2,170 1,060 723 678 669 28 892 1,27O 5,620 4,820 3,220 1,670 2,520 1,980 1,07O 750 780 493 29 890 1,210 *4,920 6.960 - 1,680 *2,380 1,88O *872 878 758 831 3O 89O *1 , 1 9O 3,790 6,760 *1,74O 2,350 1.750 1,050 809 *693 634 31 881 3,130 5,910 1,62O *1,780 734 *69O Total 26,293 39,398 112,530 108,290 125,280 56,730 92,860 71,270 38, 841 25,450 21,503 21,250 Mean 848 1,313 3,630 3,493 4,474 1,830 3,095 2,299 1,295 821 694 708 Cfsm 1.77 2.74 7.58 7.29 9.34 3.82 6.46 4.80 2.7O 1.71 1.45 1.48 In. 2.04 3.06 8.74 8.41 9.73 4.40 7.21 5.53 3. 02 1.98 1.67 1.65 Ac-ft 52, ISO 78,140 223,200 214,800 248,500 112,500 184,2OO 141,400 77,04O 5O,480 42,650 42,150 Calendar year 1957: Max 14,10O Min 516 Mean 1,818 Cfsm 3.8O In. 51.51 Ac-ft 1,316,OOO Water year 1957-58: Max 11,9OO11,900 Min 46O Mean 2,O27 Cfsm 4.23 In. 57.44 Ac-ft 1,467,0001,467,OOC Peak dischargitarge (base, 8,100 efs). Dee. 7 (3:3O a.m.) 9,1OO cfs (7.23 ft); Dec. 19 (about 12 p.m.) 14,300 effs (9.30 ft); Dee. 25 (12 p.m.) 8,74O cfs (7.O7 ft); Jan. 29 (4 p.m.) 9,320 efs (7.33 ft)______:); Feb. 16 (9:50 a.m.) 6,22O efs (6.65 ft); Apr. 2O (7 to 6 p.m.) 16,600 efs (1O.07 ft). * Discharge measurement made on this day. 174 WILLAMETTE RIVER BASIN

2100. Clackamas River at Estacada, Oreg. (Formerly published as Clackamas River near Cazadero)

Location. Lat 45°18'00" ) long 122 021'10", in NE£ sec. 19, T. 3 S., R. 4 E., on left bank 0.20 mile below River Mill Dam and 1.5 miles northwest of Estacada. Drainage area. 671 sq mi. Records available. April 1908 to September 1958. Published as "near Cazadero" January 1909 to September 1957. Monthly discharge only April 1908, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 298.93 ft above mean sea level (levels by Portland General Electric Co.). Apr. 6 to Dec. 31, 1908, staff gage at site 1.3 miles upstream; Jan. 1 to Nov. 19, 1909, staff gage and Nov. 20, 1909, to Oct. 9, 1922, water- stage recorder, at site 5.8 miles upstream; Oct. 10 to Nov. 14, 1922, staff gage and' Nov. 15, 1922, to Sept. 30, 1957, water-stage recorder, at site 6.3 miles upstream, all at different datum. Average discharge. 50 years, 2,689 cfs (1,947,000 acre-ft per year). Extremes. Maximum discharge during year, 23,300 cfs Apr. 20 (gage height, 9.94 ft), from rating curve extended above 13,000 cfs by logarithmic plotting; minimum, 270 cfs Aug. 30 (gage height, 0.85 ft); minimum daily, 490 cfs Sept. 25. 1908-58: Maximum discharge, 60,800 cfs Mar. 31, 1931 (gage height, 24.5 ft, site and datum then in use), by computation of flow over dam, from data furnished by Port land General Electric Co.; minimum, 410 cfs Oct. 20, 1925, Sept. 28, 1930 (gage height, 0.03 ft, site and datum then in use), caused by shutdown of powerplant at Three Lynx; minimum daily, that of Sept. 25, 1958. Remarks. Records excellent. Two small diversions above station for Oregon City and Estacada municipal water supply. Minor regulation since 1956 by Timothy Lake (see p. 170), and by North Fork forebay (result of construction operations in 1958 year), capacity, about 6,400 acre-ft between minimum and maximum operating levels. Diurnal fluctuations and slight regulation caused by powerplant at River Mill Dam. Cooperation. Water-stage recorder graph and 12 discharge measurements furnished by Port- land General Electric Co. Revisions (water years).--WSP 1184: Drainage area (former site). WSP 1248: 1908-9, 1910(M), 1916, 1917(M), 1922(M), 1923. WSP 1288: Drainage area (former site).

Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. l 935 1,080 1,740 4,070 7,870 *3,970 2,020 5.21g 2,080 1,380 1,020 576 2 1,280 1,190 2,440 3,570 6,000 3,530 2,060 5,180 2,260 1,510 985 652 3 1,250 536 2,180 3,110 5,000 5,450 2,080 5,040 1,940 1.420 650 817 4 1,110 1,000 2,040 2,800 4,450 2,970 2,050 5,060 1,890 1,070 828 757 5 1,100 748 1,760 2,590 4,090 2,850 1,750 5,210 1,690 1,080 906 1,050 6 932 802 4,210 2,480 3,910 2,660 1,750 5,060 2.380 940 872 846 7 1,160 783 14,000 2,300 5.850 2,450 1,750 2,960 2,160 1,540 857 568 8 1,110 712 7,210 2,360 4,120 2,470 1,750 2,880 1,950 1,090 818 852 9 1,130 946 4,600 2,260 4,490 2,410 1,690 5,190 1,860 1,000 1,070 813 10 1,060 645 3,630 2,380 5,810 2,530 2,250 5,170 1,920 1,060 629 717 11 999 1,620 2,910 3,020 5,440 2,240 2,440 5,210 1,870 1,040 846 680 12 968 1,780 2,620 4,620 8,120 2,160 2,270 2,980 1,910 1,110 696 824 13 802 6.010 2,410 5,140 8,980 2,190 2,450 2,740 1,950 891 881 876 14 ,440 4,600 2,310 4,790 6,890 2,040 2,540 2,460 1,690 1,080 830 607 15 ,200 3,160 2,280 7,330 7,500 1,990 2,520 2,440 1,400 942 825 1,150 16 ,090 2,430 2,130 6,580 11,500 1,900 2,740 2,550 1,490 982 1,020 917 17 ,120 2,130 2,520 9,590 9,580 1,960 4,470 2,570 1,460 921 541 880 18 ,050 1,890 2,950 8,230 8,970 1,890 6,590 2,740 1,410 935 688 930 19 ,070 2,260 9,880 6,130 7,220 1,900 5,440 2,880 1,410 1,100 814 1,030 20 760 2,050 18,500 4,750 6,290 1,920 16.600 2,720 1,460 695 854 1,010 21 945 1,960 12,400 4,300 5,410 2,070 16,300 2,620 1,550 1,020 792 796 22 798 1,700 7,770 3,470 4,840 2,090 10,900 2,620 1.010 900 788 636 23 906 1,640 5,590 3,420 4,790 2,060 8,150 2,680 1,290 916 1,010 1,080 24 907 1,580 5,500 5,870 5,110 2,260 6,410 2,420 1,410 914 496 1,010 25 1,070 1,440 7,950 5,630 7,050 2,240 5,220 2,560 1,520 902 794 490 26 1,210 1,600 11,400 4,870 6,210 2,520 4,520 2,550 1,450 1,090 806 700 27 886 1,470 7,960 4,210 5,060 2,190 4,040 2,480 1,550 610 790 1,550 28 1,050 1,350 9,110 6,350 4,450 2,160 3,660 2,220 1,340 924 857 1,150 29 1,040 1,720 *8,660 9,470 - 2,130 5,560 2,150 1,090 1,000 854 910 30 1,090 1,420 6,110 10,000 2,160 5,200 2,000 1,400 957 *1,050 558 31 1,040 4,710 9,390 2,120 1> 820 922 722 Total 32,508 52,252 179,280 155,080 172,740 73,060 132,670 85,950 49,150 51,537 25,549 25,172 Mean 1,049 1,742 5,783 5,003 6,169 2,557 4,422 2,708 1,638 1,017 824 839 Cfsm 1.56 2.60 8.62 7.46 9.19 5.51 6.59 4.04 2.44 1.52 1.25 1.25 In. 1.80 2.90 9.94 8.60 9.57 4.05 7.55 4.65 2.72 1.75 1.42 1.40 Ac-ft 64,480 103,600 355,600 307,600 542,600 144,900 263,100 166,500 97,490 62,550 50,680 49,930 Calendar year 1957: Max 22,000 Mln 536 Mean 2,689 Cfara 4.01 In. 55.25 Ac-ft 1,947,000 Water year 1957-58: Max 18,300 Mln 490 Mean 2,775 Cfsra 4.14 In. 56.15 Ac-ft 2,009,000 Peak discharge (base, 11,000 cfs).--Dec. 7 (2 a.m.) 17,800 cfs (8.67 ft); Dec. 19 (10 p.m.) 21,100 cfs (9.44 ft); Dec. 26 (3 a.m.) 15,200 cfs (7.49 ft); Jan. 29 (5 p.m.) 13,100 cfs (7.47 ft); Feb. 16 (7 p.m.) 12,400 cfs (7.27 ft); Apr. 20 (9 p.m.) 25,500 cfs (9.'94 ft).______* Discharge measurement made on this day. WILLAMETTE RIVER BASIN 175

2115. Johnson Creek at Sycamore, Oreg.

Location. Lat 45°28'40", long 122°30'24" (revised), in lot 2, SW£ sec. 13, T. 1 S., R. 2 E., on right bank a third of a mile southwest of Sycamore station and 2? miles east of city limits of Portland. Drainage area. 28.2 sq mi. Records available.--July 1940 to September 1958. Gage. Water-stage recorder and V-notch weir. Datum of gage is 228.47 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Average discharge.--18 years, 54.3 cfs {39,310 acre-ft per year). Extremes. Maximum discharge during year, 848 cfs Apr. 20 (gage height, 8.70 ft); mini mum, 0.4 cfs Aug. 15, Sept. 7-9. 1940-58: Maximum discharge, 2,110 cfs Feb. 10, 1949 (gage height, 13.77 ft, from floodmark); minimum, 0.2 cfs Aug. 14-16, 18-22, 1940, Aug. 2, 21, 22, 1941, Sept. 6, 1955, Sept. 4, 1956. Remarks.--Records good. Slight diurnal fluctuation at low flow caused by recreational ponds upstream. Small diversions for irrigation above station. Revisions (water years). WSP 1318: 1941(M).

Rating table, water year 1957-58 (gage height, In feet, and discharge, in cubic feet per second) 0.3 1.1 4.5 4.0 172 .6 1.5 20 5.0 275 .9 1.1 2.0 42 6.0 399 1.0 2.1 3.0 8.0 715 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2.1 a2.0 36 73 290 89 35 ST"31 3.2 5.2 0.6 0.6 2 ~5~.211 al.7 48 60 155 BT 4O 2.8 378 .7 .6 3 al.6 32 50 114 *57 40 22 2.6 3.0 .7 .6 4 3.2 1.5 *25 40 85 47 34 19 2.4 3.0 .7 .6 5 3.8 1.6 20 35 72 50 29 16 2.1 2.6 .7 .6 6 3.0 1.8 92 31 58 44 27 15 34 2.4 .7 .5 7 2.1 1.6 200 27 6T 50 23 14 20 2.2 .7 .5 8 1.8 Lil 112 2T 124 69 22 12 8.6 2.0 .6 *75~.4 9 2.0 1.7 72 27 188 60 21 11 7.0 *1.8 .6 10 1.6 1.6 51 42 192 51 37 10 6.2 1.7 .7 .5 11 1.5 4.5 38 81 160 44 29 9.6 6.2 1.8 .6 .5 12 1.3 6.6 31 228 398 38 26 8.6 5.9 1.7 .6 .5 5.2 26 26 *281 32 7.8 5.6 1.5 .5 .7 13 238 27 -.7 14 3.2 31 29 191 166 29 33 7.0 5.2 1.4 .9 15 2.0 23 27 165 228 24 35 7.0 4.8 1.1 .5 .9 16 1.8 14 31 139 489 22 88 5.6 3.8 1.0 .6 .9 17 1.7 10 36 400 287 24 *141 4.5 3.2 1.1 .6 1.6 18 1.6 19 44 191 *212 26 131 4.5 2.6 1.1 .6 1.1 19 1.5 6.2 405 125 140 22 136 3.8 2.6 1.1 .6 .7 20 1.3 4.8 569 100 103 2£ 667 3.5 2.4 1.1 .6 1.2 21 T75-1.1 4.5 676 *105 82 24 387 3.5 2.4 1.0 .6 .9 22 4.5 3W 81 75 23 274 3.5 2.1 1.0 .6 1.0 23 3.0 4.1 187 134 79 38 239 3.5 1.7 .9 .6 .9 24 *a2.6 3.8 139 376 124 52 172 3.5 370 .9 .6 .7 25 a4.4 3.0 166 266 187 42 126 3.2 7.0 .9 .6 .7 26 a3.4 3.8 262 161 170 44 97 3.2 5.2 .8 .7 27 a2.8 3.8 200 126 162 33 75 3.5 4.8 .8 !e .7 28 a2.4 7.8 177 189 112 32 58 3.2 3.5 .6 *.6 .6 29 a2.0 6.2 167 344 - 35 46 *3.2 3.2 76 .6 .6 30 a2 4 6.2 126 307 36 6.6 . 8 .5 . 6 31 a2 .8 96 559 31 2T8 .7 .6 Total 85.3 209.3 4,498 4,918 4,800 1,259 3,131 273.8 170.7 49.6 19.1 21.9 Mean 2.75 6.98 145 159 171 40.6 104 8.83 5.69 1.60 0.62 0.73 Cfsm 0.098 0.248 5.14 5.64 6.06 1.44 3.69 0.313 0.202 0.057 0.022 0.026 In. 0.11 0.28 5.93 6.49 6.33 1.66 4.13 0.36 0.23 0.07 0.03 0.03 Ac-ft 169 415 8,920 9,750 9,520 2,500 6,210 543 339 98 38 43 Calendar year 1957 : Max 1,110 Mln 0.5 Mean 48.9 Cfam 1.73 In. 23.57 Ac-ft 35,420 Water year 1957-58: Max 676 Mln 0.4 Mean 53.2 Cfsm 1.89 In. 25.65 Ac-ft 38,540 Peak discharge (base, 450 cfs). Dec. 21 (6 p.m.) 762 cfs (8.25 ft): Jan. 17 (7 a.m.) 508 cfs (6.75 ft); Jan. 24 (6:30 a.m.) 470 cfs (6.50 ft); Jan. 31 (1 p.m.) 710 cfs (7.97 ft); Feb. 12 (5 p.m.) 480 cfs (6.57 ft); Feb. 16 (2 a.m.) 674 cfs (7.76 ft)j Apr. 20 (5 p.m.) 848 cfs JS.-'O ft).______* Discharge measurement made on this day. 176 LAKE RIVER BASIN

2120. Salmon Creek near Battle Ground, Wash.

Location. Lat 45°46'25", long 122°26'35", In NE£SW£ sec. 4 , T. 3 N. , R. 3 E. , on left bank 100 ft upstream from highway bridge, 150 ft downstream from Rock Creek, and 4 miles east of Battle Ground. Drainage area . 18.3 sq ml. Records available. October 1943 to September 1958. Monthly discharge only for some periods, published In WSP 1318. Gage . Water-stage recorder. Datum of gage Is 354.88 ft above mean sea level (river- profile survey). Prior to Oct. 1, 1950, staff gage at same site at datum 1.0 ft higher. Oct. 1, 1950, to June 24, 1953, staff gage and crest-stage Indicator at same site and datum. Average discharge. 15 years, 61.4 cfs (44,450 acre-ft per year). Extremes . Maximum discharge during year, 525 cfs Apr. 20 (gage height, 2.88 ft); mini mum,, 1.8 cfs Aug. 13,, 21,, 22; minimum gage height,, 0.94. ft Aug. 22. 1943-58: Maximum discharge, 1,500 cfs Jan. 22, 1954 (gage height, 4.02 ft), from ratingting curve extended above 440 cfs; minimum observed, 1.3 cfs Aug. 20, 22, 28-30, Sept.pt. 5-9, 13, 14, 1949, Sept. 14-16, 22, 1951. Revisions The maximum discharge and date for water year 1955 has been revised to 708 8, 1955 (gage height, 3.12 ft), superseding figures published in WSP 1398. Remarks . Records excellent except those below 5 cfs, which are fair. No regulation or diversion above station. Revisions (water years). WSP 1044: 1944. WSP 1318: 1946(M).

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.0 1.8 1.7 51 1.2 4.5 2.0 115 1.4 12.5 2.7 409 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2.4 *5.6 164 110 240 98 41 48 11 23 3.5 2.4 2 STO 5.1 155 91 174 83 43 IT 9.4 16.5 tt 2.3 3 4.5 4.9 105 76 134 72 43 40 9.4 12.5 2.8 2.4 4 4.9 4.3 80 64 103 62 40 37 9.4 11 2.8 2.4 5 6.2 4.1 68 57 87 62 38 35 8.0 9.4 2.6 2.2 6 4.5 3.9 334 48 74 55 35 33 58 8.0 2.5 2.1 7 4.1 3.9 321 45 68 60 32 30 33 8.0 2.5 ITS'1.9 8 3.7 3.9 174 45 Je 80 32 29 *20 7.2 2.4 9 3.1 3.7 123 41 87 89 30 25 17.5 6.8 2.3 2.5 10 2.8 iTT 93 45 105 80 59 24 16.5 6.8 2.2 2.4 11 2.7 14 76 49 103 *72 51 23 16 6.5 2.1 2.4 12 3.2 46 62 93 220 66 46 22 15 6.2 2.0 2.6 13 ~6.811 105"110 55 110 258 59 48 19.5 14 5.6 27? 4.7 14 51 132 178 51 59 18.5 12 5.6 2.2 13 15 4.7 64 43 207 168 48 74 16.5 10.5 4.9 2.2 12 16 4.1 43 43 186 240 45 178 15 9.4 4.5 2.5 6.8 17 3.7 33 48 267 200 48 171 14 8.4 4.7 2.3 8.0 18 3.6 27 64 178 161 45 145 12.5 7.6 5.4 2.2 4.9 19 3.2 29 *339 131 128 40 165 12.5 8.0 5.6 2.1 5.9 20 3.2 24 358 110 103 38 580 12 7.6 5.1 2.0 5.1 21 3.0 20 398 91 85 40 *305 11 6.8 5.1 2.0 6.5 22 3.8 18.5 331 78 91 40 262 IT"10.5 6.5 4.7 2.1 5.9 23 8.8 17.5 228 89 91 38 196 S7T 4.1 2.2 .7 24 5.9 16 215 113 108 45 152 11 16.5 3.9 *2.4 .3 25 6.2 16 228 139 142 46 123 13.5 16.5 3.6 2.2 .7 26 6.2 16.5 258 126 171 48 98 13.5 12 3.2 2.1 .3 27 5.1 16 295 115 148 46 85 18.5 14 3.2 2.2 .9 28 4.3 33 331 *131 120 45 72 15 14 *2.8 2.5 .2 29 4.1 26 240 216 - 45 62 12 13.5 2.7 2.8 .2 30 11 46 174 316 46 53 10.5 32 <-fr OA 3.0 .4 31 7.6 137 336 40 11 2.8 2.6 Total 154.4 764.0 5,591 3,835 3,863 1,732 3,118 650.0 439.0 202.2 74.6 134.0 Mean 4.98 25.5 180 124 138 55.9 104 21.0 14.6 6.52 2.41 4.47 Cfsm 0.272 1.39 9.84 6.78 7.54 3.05 5.68 1.15 0.798 0.356 0.132 0.244 In. 0.31 1.55 11.36 7.79 7.85 3.52 6.34 1.32 0.89 0.41 0.15 0.27 Ac-ft 306 1,520 11,090 7,610 7,660 3,440 6,180 1,290 871 401 148 266 Calendar year 1957: Max 400 Mln 1.8 Mean 51.9 Cfsm 2.84 In. 38.52 Ac-ft 37, 600 Water year 1957-58: Max 398 Min 1.9 Mean 56.3 Cfsm 3.08 In. 41.76 Ac-ft 40,780 Peak discharge (base, 470 cfs). Dec. 19 (2 p.m.) 484 cfs (2.82 ft); Dec. 21 (5.p.m.) 484 cfs (2.82 ft); Apr. 20 (12 m.) 525 efs (2.88 ft).______* Discharge measurement made on this day. LEWIS RIVER BASIN 177

2135. Big Creek below Skookum Meadow, near Trout Lake, Wash.

Location.--Lat 46°05'30", long 121°51'30", in NE£ sec. 13, T. 7 N., R. 7 E., on left bank Just downstream from Skookum Meadow, 3 miles upstream from Lewis River and 17 miles northwest of Trout Lake. Drainage area. 13.2 sq mi. Records available. September 1927 to September 1931 (published as "below Skookum Meadow"), September 1955 to September 1958. gage. Water-stage recorder. Datum of gage is 3,213.00 ft above mean sea level (levels by Pacific Power & Light Co.). Prior to September 1955, at site 100 ft upstream at different datum. Average discharge. 7 years, 56.6 cfs (40,980 acre-ft per year). Extremes. Maximum discharge during year, 579 cfs Apr. 20 (gage height, 4.49 ft), from rating curve extended above 230 cfs by logarithmic plotting} minimum, 7.0 cfs Oct. 1, Sept. 7-9, 30; minimum gage height, 0.68 ft Oct. 1. 1927-31, 1955-58: Maximum discharge recorded, 766 cfs Mar. 31, 1931 (gage height, 5.1 ft, site and datum then in use), from rating curve extended above 250 cfs, but may have been higher Nov. 25, 1927, during period of no gage-height record; minimum, 4 cfs Nov. 20, 21, Dec. 2, 1929, Sept. 2-4, 19-26, 29, 30, Oct. 1-5, 1930. Remarks. Records good. No regulation or diversion above station. Revisions (water years). WSP 1448: 1928.

Rating table, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) (Shifting-control method used Feb. 20-28, Apr. 17-23) 0.66 2.0 108 1.0 3.0 256 1.5 4.5 555 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. *7.2 *22 1 10.5 36 61 76 ~55104 46 112 86 10 8.9 2 5jS 10 42 55 70 46 120 72 *2T 9.8 8.0 3 10.5 9.5 36 51 63 76 44 124 *64 22 10 7.8 4 8.9 9.2 *30 46 605S 66 41 125 60 20 9.8 7.8 5 14 9.2 28 42 60 TT 121 60 18 9.5 7.5

6 13.5 9.2 63 41 62 53 43 128 ~89142 17 9.2 7.2 7 14.5 9.2 92 *34 61 50 44 137 17 9.2 7.2 8 12 9.2 100 34 70 46 46 156 69 16.5 9.2 9 11.5 14~^8.9 77 32 87 44 52 166 62 16 8.9 fc* 10 9.5 66 3JL 126 42 96 170 58 15.5 8.9 7.2 11 8.6 63 61 32 109 37 98 164 53 15 8.9 7.2 12 8.6 114 59 38 119 36 110 133 49 14.5 8.6 7.2 13 15.5 ~9T147 50 36 132 34 115 119 46 14 8.6 7.5 14 13 50 40 109 33 115 119 44 13.5 8.3 10.5 15 10 64 44 78 123 31 118 126 39 13 *8.3 10.5 16 9.2 49 42 81 141 30 169 140 37 13 8.3 10 17 12 42 43 ~55113 150 29 224 152 35 13 8.3 12.5 18 9.8 38 41 176 28 196 170 32 13 8.0 9.5 19 8.9 36 79 85 154 2S 277 180 31 13 8.0 15.5 20 8.6 30 101 74 138 29 555 m 30 12.5 8.0 TZT5 21 8.3 27 77 66 128 36 380 156 28 12 7.8 12 22 *16 25 66 59 132 38 265 156 25 12 7.5 10.5 23 26 24 58 64 157 41 196 157 23 11.5 7^ 10.5 24 17 23 59 88 239 49 154 140 ST 11.5 7.5 9.5 25 20 26 98 75 251 50 130 133 31 11 7.5 *10 26 15.5 31 145 68 *196 46 113 130 25 11 7.5 8.9 27 12 23 m 67 157 45 103 134 26 10.5 8.0 8.0 28 10.5 22 110 103 126 46 97 112 25 10.5 8.3 7.8 29 10 20 94 109 - 45 *96 94 24 10.5 1610.5 7.5 30 16 23 80 100 49 102 83 24 10.5 7.0 31 13 68 86 46 ^Ryo 10 8 .3 Total 381.9 1,018.4 2,108 1,987 3,475 1,435 4,092 4,216 1,424 440.5 268.2 268.1 Mean 12.3 33.9 68.0 64.1 124 46.3 136 136 47.5 14.2 8.65 8.94 Cfsra 0.932 2.57 5.15 4.86 9.39 3.51 10.3 10.3 3.60 1.08 0.655 0.677 In. 1.08 2.87 5.94 5.60 9.79 4.04 11.53 11.88 4.01 1.24 0.76 0.76 Ac-It 757 2,020 4,180 3,940 6,890 2;850 8,120 8,360 2,820 874 532 532 Calendar year 1957: Max 225 Min 6.8 Mean 47.4 Cfsra 3.59 In. 48.76 Ac-ft 34,300 Water year 1957-58 : Max 535 Min 7.0 Mean 57.8 Cfsra 4.38 In. 59.50 Ac-ft 41,880 Peak discharge (base, 360 cfs).--Apr. 20 (12:45 p.m.) 579 cfs (4.49 ft). * Discharge measurement made on this day. 178 LEWIS RIVER BASIN

2140. Rush Creek above Meadow Creek, near Trout Lake, Wash.

Location. Lat 46°02'30", long 121°50'30", In tffi£ sec. 6, T. 6 N., R. 8 E., on left bank 1 mile upstream from Meadow Creek and 15 miles west of Trout Lake. Drainage area. 5.97 sq mi. Records available. September 1955 to September 1958. Gage. Water-stage recorder. Altitude of gage is 3,400 ft (from topographic map). Extremes. Maximum discharge during year, 428 cfs June 6 (gage height, 2.62 ft); mini mum, 0.1 cfs for many days during year. 1955-58: Maximum discharge, 499 cfs Oct. 9, 1955 (gage height, 2.86 ft); minimum, 0.1 cfs for many days during 1957 and 1958 water years. Remarks. Records good except those above 50 cfs and those below 1 cfs, which are fair. No regulation or diversion above station.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 0.4 1.0 32 .5 1.5 97 .6 3.4 2.0 Z10 17 Z.5 380 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dee. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 0.1 0.5 6.3 18.5 *7.7 34 2.1 30 108 1B.S 0.1 0.1 2 .1 .2 4.5 8.4 5.7 20 2.1 37 80 18.5 .1 .1 3 .1 .1 2.5 3.9 5.1 13.5 1.8 40 *65 15.5 .1 .1 4 * . 1 .1 1.8 3.4 4.5 10.5 1.4 39 101 14 .1 .1 5 .1 .1 *1.2 3.0 3.4 8.4 1.2 38 168 11.5 .1 .1 6 .1 .1 8.1 *5.1 5-.0. 7.0 1.2 40 330 10 .1 .1 7 .1 .1 44 15 3.0 5.7 1.2 48 165 7.7 .1 .1 8 .1 .1 52 8.8 5.1 5.7 1.4 57 85 4.5 .1 .1 9 .1 .1 36 1.8 3.9 5.1 1.4 70 77 2.5 .1 .1 10 .1 .1 22 1.4 9.2 4.5 6.3 76 71 1.2 .1 .1 11 .1 30 13.5 1.4 7.0 4.5 11.5 74 58 .8 .1 .1 12 .1 137 11.5 1.8 7.7 3.9 14 46 49 .5 .1 .1 13 22 92 7.7 1.8 8.4 3.0 17.5 34 55 .3 .1 .1 14 8.4 30 6.3 2.1 7.0 2.5 17.5 39 82 .2 .1 .1 15 1.0 17.5 5.1 15.5 7.7 2.1 15 55 77 ^1 .1 16 .3 10 3.9 23 14 1.8 17 72 109 .1 .1 .1 17 .2 7.0 3.4 39 20 1.8 36 85 101 .1 .1 .1 18 .1 6.3 18.5 45 30 1.4 49 106 88 .1 .1 .1 19 .1 5.1 29 39 33 1.2 56 137 96 .1 .1 .1 20 .1 4.5 22 36 32 1.2 88 133 87 .1 .1 .1 21 .1 15.5 16.5 23 31 2.5 90 137 70 .1 .1 .1 22 3.5 1.8 5.7 14 32 3.9 78 151 62 .1 .1 .1 23 *29 1.4 7.7 13.5 37 3.9 71 148 52 .1 .1 .1 24 24 1.2 5.1 17 65 4.5 55 135 86 .1 .1 .1 25 II 2.5 14 12 11 3.9 33 146 46 .1 .1 26 12 5.7 48 9.2 72 3.0 20 160 35 *.l .1 .1 27 2.5 6.3 57 7.0 62 3.4 15.5 168 36 .1 .1 .1 28 .7 7.7 38 18 46 *3.0 15 TI6 26 .1 .1 .1 29 .2 13 31 16.5 - 2.5 17.5 92 18.5 .1 .1 .1 30 3.3 2.1 27 13 2.5 *23 80 21 .1 .1 .1 31 2.1 21 9.2 2.1 106 .1 .1 Total 141.8 398.1 570.3 426.3 639.4 173.0 759.6 2,694 2,504.5 107.4 3.1 3.0 Mean 4.57 13.3 18.4 13.8 22.8 5.58 25.3 86.9 83.5 3.46 0.10 0.10 Cfsm 0.765 2.23 3.08 2.31 3.82 0.935 4.24 14.6 14.0 0.580 0.017 0.017 In. 0.88 2.48 3.55 2.66 3.98 1.08 4.73 16.78 15.60 0.67 0.02 0.02 Ac-ft 281 790 1,130 846 1,270 343 1,510 5,340 4,970 213 6.1 6.0 Calendar year 1957: Max 200 Mln 0.1 Mean 15.8 Cfsm 2.65 In. 35.92 Ac-ft 11,430 Water year 1957-58: Max 330 Mln 0.1 Mean 23.1 Cfsm 3.87 In. 52.45 Ac-ft 16,710

* Discharge measurement made on this day. LEWIS RIVER BASIN 179

2145. Meadow Creek below Lone Butte Meadow, near Trout Lake, Wash.

Location. Lat 46°02'50", long 121°51'20", in E£ sec. 36, T. 7 N., R. 7 E., on right bank just downstream from Lone Butte Meadow, half a mile upstream from mouth, and 16 miles northwest of Trout Lake. Drainage area. 11.7 sq mi. Records available. September to December 1927 (fragmentary), January 1928 to September 1931, September 1955 to September 1958. Prior to September 1955, published as "below Lone Butte Meadow. " Gage. Water-stage recorder. Datum of gage is 3,226.84 ft above mean sea level (levels by Pacific Power & Light Co.). Average discharge. 6 years (1928-31, 1955-58), 88.4 cfs (64,000 acre-ft per year). Extremes. Maximum discharge during year, 292 cfs Apr. 20 (gage height, 2.05 ft); mini mum, 61 cfs Nov. 5, 6 (gage height, 0.74 ft). 1927-31, 1955-58: Maximum discharge, 330 cfs Dec. 11, 1956 (gage height, 2.20 ft); minimum, 47 cfs Dec. 29-31, 1930, Jan. 1-3, 19-21, 1931. Remarks. Records good. No regulation or diversion above station. Revisions (water years). WSP 1448: 1928-29.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 2 to Apr. 20 Apr. 21 to Sept. 30 0.7 57 0.9 67 1.0 92 1.4 150 1.5 177 1.9 258 2.0 280 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 72 63 78 83 *92 107 80 105 130 *92 86 80 2 *75 63 78 82 89 T32 82 107 118 92 85 80 3 75 62 72 79 87 100 80 107 112 92 85 79 4 73 62 68 77 87 95 79 107 *108 92 85 79 5 75 §1 *67_ 75 88 95 79 107 116 90 85 79 6 77 62 86 75 87 91 79 108 177 90 85 79 7 T4 62 98 *74 87 89 79 110 140 90 85 79 8 72 62 98 74 91 87 80 114 118 89 85 78 9 71 62 87 21 106 86 84 120 112 89 85 78 10 69 67 82 74 112 84 101 122 107 87 83 78 11 68 80 80 77 101 83 92 126 107 87 83 78 12 66 102 79 84 110 82 92 112 105 87 83 78 13 68 12L 75 77 116 80 92 107 103 87 83 78 14 69 92 75 86 102 79 95 107 102 87 83 79 15 67 78 73 107 110 79 95 112 100 87 *83 80 16 65 73 73 95 122 78 110 120 102 86 83 80 17 65 69 77 110 121 78 132 126 100 86 83 80 18 65 69 77 98 129 77 122 136 100 87 83 79 19 63 69 92 91 110 7T 146 142 100 87 82 80 20 63 67 100 87 110 77 254 138 98 87 82 79 21 62 66 88 84 107 80 216 138 96 87 82 79 22 W 66 83 82 110 82 162 142 95 86 82 79 23 73 65 79 89 119 82 138 148 95 86 82 78 24 *68 65 83 104 163 88 126 140 103 86 80 77 25 67 66 112 95 172 87 118 142 100 86 80 *78 26 65 68 124 89 *143 82 110 144 96 86 80 77 27 64 66 106 89 124 80 107 156 95 86 82 77 28 63 65 107 110 112 82 105 136 93 86 82 75 29 63 65 98 112 - *80 105 128 93 86 82 75 Op 30 66 67 89 104 83 *105 122 93 86 O£ 74. 31 64 86 95 80 132 86 80 Total 2,113 2,105 2,670 2,731 3,107 2,632 3,345 3,861 3,214 2,718 2,571 2,349 Mean 68.2 70.2 86.1 88.1 111 84.9 112 125 107 87.7 82.9 78.3 Cfsm 5.83 6.00 7.36 7.53 9.49 7.26 9.57 10.7 9.15 7 50 7.09 6.69 In. 6.72 6.69 8.49 8.68 9.88 8.37 10.63 12.27 10.22 8.64 8.17 7.47 Ac-ft 4,190 4,180 5,300 5,420 6,160 5,220 6,630 7,660 6,370 5,390 5,100 4,660 Calendar year 1957: Max 206 Min 61 Mean 94.3 Cfsm 8.06 In. 109.43 Ac-ft 68,290 Water year 1957-58: Max 254 Min 61 Mean 91.6 Cfsm 7.83 In. 106.23 Ac-ft 66,280 Peak discharge (base, 250 cfs). Apr. 20 (1:50 p.m.) 292 cfs (2.05 ft). * Discharge measurement made on this day. 180 LEWIS RIVER BASIN

2150. Rush Creek above falls, near Cougar, Wash. Location. Lat 46°03 I 20", long 121°54'20", on line between sees. 27 and 34, T. 7 N. , R. 7 E., on right bank 500 ft upstream from falls, 2 miles upstream from mouth, and 18 miles east, of Cougar. Drainage area. 26.0 sq mi. Records available. December 1927 to September 1931 (published as Rush Creek above falls), October 1955 to September 1958. ge. Water-stage recorder. Datum of gage is 2,260.51 ft above mean sea level (levels by icific Power & Light Co.). December 1927 to September 1931, water-stage recorder at same site at different datum. Average discharge. 6 years (1928-31, 1955-58), 160 cfs (115,800 acre-ft per year). Extremes. Maximum discharge during year, 690 cfs June 6 (gage height, 3.30 ft); minimum, 9T~cTs Nov. 8-10 (gage height, 0.56 ft). 1927-31, 1955-58; Maximum discharge, 846 cfs (revised) Dec. 11, 1956 (gage height, 3.69 ft); minimum, 79 cfs Jan. 24-27, 29, Nov. 6, 7, 1930. Revisions. Figures of maximum discharge for the water years 1956-57 have been revised to 762 cfs Oct. 9, 1955 (gage height, 3.48 ft), and 846 cfs Dec. 11, 1956 (gage height, 3.69 ft), superseding those published in WSP 1448 and 1518, respectively. Remarks. Records good except those for periods of no gage-height record, which are fair. No regulation or diversion above station. Revisions. Revised figure of discharge, in cubic feet per second, for high-water period in the water year 1957, superseding that published in WSP 1518, and revised peak dis charges for water year 1956, superseding those published in WSP 1448, are given here with: Dec. 11, 1956...... 636

Per Month Cfs-days Maximum Minimum Mean square Runoff mile Inches Acre-feet December 1956...... 7,376 636 140 238 9.15 10.55 14,630 Calendar year 1956... 80,504 636 140 220 8.46 115.15 159,700 Water year 1956-57... 65,482 636 108 179 6.88 93.66 129,900 Revised peak discharge. --Oct. 9 (11 p.m.) 762 cfs (3.48 ft); Oct. 29 (4:30 p.m.) 686 cfs (3.29 ft); Nov. 4 (12:30 p.m.) 646 cfs (3.19 ft); Nov. 10 (3 p.m.) 626 cfs (3.13 ft); Dec. 22 (time unknown) 612 cfs (3.09 ft). Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 0.5 91 2.0 295 1.0 150 3.0 580 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 106 101 122 137 155 180 155 208 525 162 129 116 2 112 100 122 130 149 170 140 216 *268 *162 129 114 3 111 99 *114 127 144 165 155 226 240 159 129 114 4 *108 99 110 123 141 160 155 221 *269 155 128 114 5 117 99 108 120 142 155 155 218 355 150 128 114 6 112 98 133 *119 145 155 155 224 562 146 127 115 7 112 98 193 118 145 150 135 256 585 144 127 115 a 110 97 220 117 150 145 155 254 287 141 127 115 9 108 9? 168 116 170 140 145 275 266 140 125 115 10 105 103 144 118 185 140 170 289 258 138 125 112 11 105 145 130 119 175 140 155 299 246 137 124 111 12 104 273 128 129 180 15S 155 246 234 137 124 112 13 122 285 123 120 190 155 155 212 234 156 124 112 14 114 171 122 140 170 135 155 216 258 156 *125 116 15 106 133 118 180 180 150 160 245 258 134 125 116 16 104 120 118 165 200 150 180 275 275 134 122 117 17 105 114 122 195 200 150 220 305 281 154 122 117 18 104 113 124 180 210 150 205 362 269 154 122 112 19 103 112 151 165 190 150 240 394 270 134 122 118 20 102 108 168 150 180 150 460 375 268 155 120 112 21 102 104 147 145 175 155 580 375 252 155 120 116 22 110 104 133 140 180 140 510 388 242 155 120 112 23 *134 103 128 150 200 140 250 388 230 155 119 111 24 T20 102 129 175 250 145 210 368 268 132 118 110 25 124 104 185 170 550 140 200 380 234 152 118 110 26 112 104 245 155 250 155 190 388 202 150 117 *108 27 101 104 218 150 220 *135 180 412 205 150 118 106 28 100 103 222 165 195 155 180 345 184 150 118 106 29 100 101 194 180 135 185 291 167 150 120 105 30 105 104 164 175 140 *196 266 T70 129 119 105 31 104 146 *164 135 OJ.O ZT C 129 117 Total 3,382 3,598 4,649 4,537 5,201 4,400 5,766 9,212 7,962 4,287 5,804 5,568 Mean 109 120 150 146 186 142 192 297 265 158 125 112 Cfsm 4.19 4.62 5.77 5.62 7.15 5.46 7.58 11.4 10.2 5.51 4.75 4.31 In. 4,84 5.15 6.65 6.49 7.44 6.29 8.25 15.18 11.39 6.15 5.44 4.82 Ac-ft 6,710 7,140 9,220 9,000 10,520 8,750 11,440 18,270 15,790 8,500 7,550 6,680 Calendar year 1957: Max 378 Min 97 Mean 163 Cfsm 6.27 In. 85. 32 Ac-ft 118,300 Water year 1957-58: Max 562 Min 97 Mean 165 Cfsm 6.35 In. 86. 07 Ac-ft 119,400 Peak discharge (base, 500 cfs).--Probably Apr. 20 (time unknown) 570 cfs (2.97 ft); June (1 p.m.) cfs (3.50 ft). * Discharge measurement made on this day. Note. No gage-height record Jan. 13-30, Feb. 6 to Apr. 29; discharge estimated on basis of "corded range in stage, weather records, 1 discharge measurement, and records for nearby stations. LEWIS RIVER BASIN 181

2155. Curly Creek near Cougar, Wash.

Location. Lat 46°02'05", long 121°54'30", in NW£ sec. 3, T. 6 N., R. 7 E., on right bank half a mile downstream from confluence of Hardtime and Outlaw Creeks, 4 miles upstream from mouth, and 18 miles east of Cougar. Drainage area. 12.6 sq mi. Records available. September 1955 to September 1958. Gage. Water-stage recorder. Datum of gage is 2,489.85 ft above mean sea level (levels I5y Pacific Power & Light Co.). Extremes. Maximum discharge during year, 412 cfs Apr. 20 (gage height, 3.25 ft); mini mum, 8.9 cfs sometime during Oct. 17-22, Nov. 8, 9; minimum gage height, 0.85 ft Sept. 29, 30. 1955-58: Maximum discharge, 417 cfs Dec. 22, 1955; maximum gage height, that of Apr. 20, 1958; minimum discharge, sometime during Oct. 17-22, Nov. 8, 9, 1957; minimum gage height, that of Sept. 29, 30, 1958. Remarks. Records good except those for periods of no gage-height record and those above 150 cfs, which are fair. No regulation or diversion above station. Cooperation. Gage-height record collected in cooperation with pacific Power & Light Co. Revisions (water years). WSP 1518: 1956.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 0.8 6.8 2.0 84 1.1 18 2.5 150 1.5 42 3.2 395 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec . Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 9.5 10 30 95 117 119 56 90 70 26 13 10.5 2 10 9.5 50 83 107 102 59 91 *59 25 13 10 3 10 9.5 45 73 97 90 59 92 51 24 13 10 4 *9.5 9.2 *42 66 91 80 57 88 54 23 12.5 10 5 11.5 9.2 40 *59 86 73 55 86 66 22 12.5 10 6 11 9.2 69 55 80 67 54 86 137 22 12.5 9.8 7 10.5 9.2 114 51 77 62 53 88 99 21 12.5 10 8 10.5 9.2 120 48 85 57 52 94 68 20 12.5 9.8 9 9.8 9 96 45 128 54 53 102 59 20 12.5 9.8 10 9.5 15 81 44 172 50 69 105 55 19.5 12 9.8 11 9.2 35 73 44 148 47 71 105 52 19 12 9.8 12 9.2 60 67 55 156 44 74 84 50 18.5 12 9.5 13 10.5 "85105 61 51 166 42 79 71 48 18.5 11.5 9.8 14 9.8 62 59 147 40 84 69 51 18 11.5 9.8 15 9.5 70 55 97 147 38 91 75 51 17.5 11.5 10 16 9.2 55 52 97 166 36 117 87 53 17 11.5 9.8 17 9 45 58 130 164 34 178 94 53 17 11.5 10.5 18 9 40 59 120 182 33 182 106 50 16.5 11 9.8 19 9 35 95 110 166 32 201 110 48 16.5 11 10 20 9 30 124 97 150 32 560 99 47 16 11 10 21 9 25 111 87 137 34 280 100 43 16 11 10.5 22 12 23 94 78 131 34 225 106 39 15 11 10 23 *14.5 22 85 83 131 35 178 107 37 15.5 10.5 10 24 13.5 20 86 112 185 44 156 94 42 15 11 9.8 25 13 22 128 103 236 49 136 101 39 15 11 9.8 26 12 25 172 96 180 49 118 101 32 *15 10.5 *9.8 27 11.5 22 148 95 154 49 105 110 32 14.5 10.5 *9.5 28 11 20 154 137 133 *50 96 70 30 14 11 9.5 29 10.5 18 140 *156 - 51 *90 66 27 13.5 11 9.2 30 11 20 121 147 55 87 69" 26 13 11 9.2 31 10.5 108 127 54 13 10.5 Total 323.7 876.0 2,740 2,700 3,919 1,636 3,475 2,814 1,568 556.5 359.5 296.0 Mean 10.4 29.2 88.4 87.1 140 52.8 116 90.8 52.3 18.0 11.6 9.87 Cfsm 0.825 2.32 7.02 6.91 11.1 4.19 9.21 7.21 4.15 1.43 0.921 0.783 In. 0.96 2.59 8.09 7.97 11.57 4.83 10.26 8.31 4.63 1.64 1.06 0.87 Ac-ft 642 1,740 5,430 5,360 7,770 3,240 6,890 5,580 3,110 1,100 713 587 Calendar year 1957: Max 204 Mln 9 Mean 50.7 Cfsm 4.02 In. 54.69 Ac-ft 36,740 Water year 1957-58: Max 360 Mln 9 Mean 58.3 Cfsm 4.63 In. 62.78 Ac-ft 42,160 Peak discharge (base, 180 cfs).--Dec. 25 (10:30 p.m.) 195 cfs (2.72 ft); Feb. 18 (1 to 4 a.m.) 185 cfs (2.68 ft); Feb. 25 (5:30 a.m.) 256 cfs (2.91 ft); Apr. 20 (l p.m.) 412 cfs (3.25 ft); June 6 (12 m. to 2 p.m.) 182 efs (2.65 ft).______* Discharge measurement made on this day. Note. No gage-height record Oct. 17-22, Oct. 26 to Nov. 4, Nov. 8 to Dec. 3; discharge estimated on basis of recorded range In stage and records for nearby stations. 182 LEWIS RIVER BASIN

2160. Lewis River above Muddy River, near Cougar, Wash.

Location. Lat 46°03'30", long 121°58'50", in SE£ sec. 30, T. 7 N., R. 7 E., on right bank 1 mile upstream from Pepper Creek, 2 miles upstream from Muddy River, and 15 miles east of Cougar. Drainage area. 227 sq mi. Records available. August 1927 to September 1934, October 1954 to September 1958. Rec- ords for August to October 1909, published in WSP 272, have been found to be unreliable and should not be used. Gage. Water-stage recorder. Altitude of gage is 1,080 ft (from river-profile map). August 1927 to September 1934 at datum 2.61 ft lower. Average discharge. 11 years, 1,265 cfs (915,800 acre-ft per year). Extremes.--Maximum discharge during year, 8,210 cfs Apr. 20 (gage height, 7.70 ft), from rating curve extended above 4,400 cfs; minimum, 256 cfs Oct. 21, 22 (gage height, 1.37 ft). 1927-34, 1954-58: Maximum discharge, 27,000 cfs Dec. 21, 1933 (gage height, 10.6 ft, from high-water marks, present datum), from rating curve extended above 6,000 cfs; minimum, 175 cfs Nov. 21, 1929; minimum gage height, -0.13 ft Sept. 28, 29, 1934, datum then in use. Remarks.--Records excellent. No regulation or diversion above station. Revisions. See Records available.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second)

1.3 235 5.0 3,220 2.0 500 7.0 6,650 3.0 1,100 8.0 8,950 4.0 2,000 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 283 320 806 1,530 2,090 2,020 1,040 1,670 1,640 662 406 325 2 295 306 850 1,370 1,850 1,740 1,060 1,770 1,470 640 402 309 3 295 295 818 *1,250 1,670 1,540 1,060 1,810 1,360 655 402 298 4 280 289 770 1,120 1,540 1,590 1,020 1,850 1,350 650 590 292 5 309 289 754 1,050 1,500 1,310 988 1,860 1,540 615 582 295 6 312 283 995 960 1,470 1,190 967 1,980 2.550 605 582 289 7 302 283 *1,550 902 1.460 1,120 954 2,O8O 1,930 674 582 289 8 309 277 1,770 862 1,640 1,060 967 2,350 1,520 620 390 292 9 289 274 1,580 818 2,160 995 988 2,570 *1,570 575 390 298 10 277 289 1,420 845 5,050 940 1,280 2,630 1,290 560 582 292 11 271 749 1,310 882 2,610 895 1,590 2,610 1,180 545 382 286 12 268 1,370 1,240 1,040 2,570 856 1,450 2,110 1,120 545 370 280 13 354 2,320 1,120 1,020 2,770 *818 1,6OO 1,750 1,060 520 562 280 14 362 1,670 1,120 1,150 2,470 782 1,680 1,630 1,070 505 554 302 15 295 1,250 1,020 2,180 2,390 764 1,740 1,730 1,100 496 350 326 16 280 1,020 988 2,490 2,620 754 2,520 2,060 1,120 491 546 309 17 280 876 1,030 5.290 2,680 728 5,140 2,370 1,140 491 342 350 18 271 812 1,020 2,860 5,390 722 5,460 2,590 1,120 491 542 516 19 262 770 1,620 2,540 5,220 698 3,750 2,790 1,090 491 358 346 20 259 698 2,450 1,970 2,820 704 7.720 2,620 1,060 478 334 316 21 256 635 2,160 1,690 2,520 770 5.8OO 2,720 1,020 468 330 512 22 286 610 1,770 1,470 2,470 812 4,170 2.9OO 960 464 330 506 23 510 590 1,530 1,500 2,750 856 *5,220 2,960 908 460 330 292 24 525 570 1,500 2,090 5,770 ,000 2,630 2,580 947 446 326 283 25 525 570 2,200 2,060 4,480 ,100 2,230 2,640 895 446 *325 285 26 486 595 5.680 1,900 5,620 ,090 1,920 2,650 782 457 523 277 27 402 550 2,910 1,860 2,880 ,070 1,710 2,900 788 437 323 271 28 362 545 2,700 2,590 2,370 ,05O 1,560 2,230 740 457 520 268 29 342 510 2,450 2,900 - ,O4O 1,500 1,820 692 *457 530 265 30 *370 525 2,070 2,770 ,O7O 1,540 1.610 704 428 342 262 31 350 1 , 76O *2,590 1,040 1,700 414 5 2O Total 10,267 20,140 48,941 53,127 70,810 31,884 64,854 69,540 55,516 16,143 11,025 8,907 Mean 331 671 1,579 1,714 2,529 1,029 2,162 2,243 1,184 521 556 297 Cfsm 1.46 2.96 6.96 7.55 11.1 4.55 9.52 9.88 5.22 2.30 1.57 1.31 In. 1.68 3.30 8.02 8.70 11.60 5.22 10.65 11.59 5.82 2.64 1.81 1.46 Ac-ft 20,360 39,950 97,070 105,400 140,400 65,240 128,600 137,900 70,440 52,020 21,870 17,670 Calendar year 1957: Max 5,40O Min 256 Mean 1,073 Cfsm 4.73 In. 64.16 Ac-ft 776,500 Water year 1957-58: Max 7,720 Mln 256 Mean 1,2O9 Cfsm 5.33 In. 72.27. Ao-ft 874,900 Peak discharge (base, 4.OOO cfs).--Dec. 26 (1 a.m.) 4,O8O cfs (5.58 ft); Feb. 25 (6 a.m.) 4,740 cfs (5.98 ft); Apr. 20 (1 p..m.) 8.210 efs (7.70 ft).______* Discharge measurement made on this day. LEWIS RIVER BASIN 183

2165. Muddy River below Clear Creek, near Cougar, Wash.

Location. Lat 46°06'50", long 122°00'30", in SE^SW^ sec. , T. 7 N., R. 6 E., on right bank a quarter of a mile downstream from Clear Creek, 3 miles upstream from mouth, and 14 miles east of Cougar. Drainage area. 131 sq mi. Records available. --August 1927 to September 1934, October 1954 to September 1958. Pub- lished as "near Cougar" 1927-34. Records for August to October 1909, published in WSP 272 and 492, have been found to be unreliable and should not be used. Gage. Water-stage recorder. Altitude of gage is 1,200 ft above mean sea level (from river-profile map) . August 1927 to September 1934 at site 3 miles downstream at different datum. Average discharge. 11 years, 858 cfs (621,200 acre-ft per year). Extremes . --Maximum discharge during year, 4,220 cfs Feb. 25 (gage height, 5.84 ft); mini mum, 124 cfs Sept. 30; minimum gage height, 1.53 ft Oct. 1,2. 1927-34, 1954-58: Maximum discharge, 17,500 cfs Dec. 21, 1933 (gage height, 14.0 f t , from high-water marks , site and datum then in use ) , from rating curve extended above 4,500 cfs; minimum, 94 cfs Dec. 5-7, 1929. Remarks . Records excellent. No regulation or diversion above station. Revisions. See Records available.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 1.5 119 4.0 1,800 2.0 270 5.0 3,000 2.5 515 6.0 4,490 3.0 872 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 126 207 658 1,210 1,760 1,610 808 969 840 299 185 151 2 133 197 610 1,080 1,550 1,370 840 1,000 792 290 179 148 3 136 191 558 960 1,400 1,190 848 1,040 739 286 179 146 4 133 185 534 *864 1,260 1,060 808 1,050 694 334 179 146 5 156 182 515 784 1,250 1,000 784 1,080 702 303 179 143 6 159 179 *855 731 1,220 888 762 1,100 1,020 278 176 141 7 151 176 1,040 673 1,270 832 739 1,140 928 274 176 141 8 156 173 1,040 644 1,500 777 724 1,240 111 263 176 136 9 154 167 1,030 610 2,450 716 716 1,360 694 255 176 141 10 143 235 1,000 680 3,170 666 848 1,440 *631 248 173 138 11 136 552 969 769 2,640 624 848 1,450 604 244 173 136 12 136 952 912 928 2,730 597 888 1,280 558 237 170 136 13 243 1,310 848 856 2,770 *571 969 1,100 527 233 170 136 14 203 1,190 856 ,090 2,470 540 1,020 994 498 230 167 154 15 162 985 777 ,980 2,210 527 1,160 969 492 226 165 154 16 151 832 769 ,290 2,110 498 1,430 1,050 486 223 165 151 17 148 724 896 ,700 2,310 498 2,240 1,220 481 223 165 165 18 141 680 960 ,350 3,220 509 2,510 1,360 475 223 162 154 19 136 631 1,360 ,940 3,090 486 2,660 1,480 458 220 162 159 20 136 571 1,710 ,610 2,590 498 5,720 1,430 442 216 159 151 21 131 515 1,610 ,370 2,190 577 3,330 1,450 421 213 159 148 22 152 481 1,390 ,190 2,050 590 2,680 1,550 410 210 156 146 23 405 458 1,250 ,290 1,990 584 *2,120 1,590 390 207 156 143 24 480 442 1,270 ,750 3,060 694 1,750 1,430 395 203 154 141 25 405 426 1,850 ,670 3.970 800 1,490 1,390 371 200 *151 141 26 338 426 2,750 ,590 3,200 800 1,290 1,400 347 200 148 138 27 282 396 2,310 ,630 2,440 792 1,150 1,460 334 197 151 136 28 252 400 2,120 ,410 1,930 784 1,040 1,220 329 194 151 129 29 *233 371 1,840 ,540 - 777 977 1,020 316 *191 162 129 30 240 400 1,590 ,420 824 952 888 311, 188 170 126 31 220 1,380 ,060 81 6 888 188 159 Total 6,177 14,634 37,257 44,669 63,800 23,495 42,101 38,038 16,462 7,296 5,153 4,304 Mean 199 488 1,202 1,441 2,279 758 1,403 1,227 549 235 166 143 Cfsm 1.52 3.73 9.18 11.0 17.4 5.79 10.7 9.37 4.19 1.79 1.27 1.09 In. 1.75 4.15 10.58 12.68 18.11 6.67 11.95 10.80 4.67 2.07 1.46 1.22 Ac-ft 12,250 29,030 73,900 88,600 126,500 46,600 83,510 75,450 32,650 14,470 10,220 8,540 Calendar year 1957 : Max 6,490 Mln 121 Mean 694 Cfsm 5.30 In. 71.88 Ac-ft 502,200 Water year 1957-58: Max 3,970 Mln 126 Mean 831 Cfsm 6.34 In. 86.11 Ac-ft 601,700 Peak discharge (base, 3,500 cfs).--Feb. 25 (5:15 a.m.) 4,220 cfs (5.84 ft); Apr. 20 (l to 2:30 p.m.) 5,840 cfs (5.60 ft).______* Discharge measurement made on this day. 184 LEWIS RIVER BASIN

2168. Pine Creek near Cougar, Wash.

Location. Lat 46°02'30", long 122°05i30", in E§ sec. 15, T. 7 N., R. 6 E., on right bank 2 miles upstream from mouth and 12§ miles east of Cougar. Drainage area. 21.4 sq mi. Records available. August 1957 to September 1958. Gage.--Water-stage recorder. Altitude of gage is 1,330 ft (from topographic map). Extremes.--1957; Maximum discharge during period August to September, 138 cfs Sept. 6 (gage height, 2.24 ft); minimum, 123 cfs Sept. 4 (gage height, 2.12 ft). 1957-58: Maximum discharge during water year, 710 cfs Apr. 19 (gage height, 3.79 ft); minimum, 116 cfs Oct. 21 (gage height, 2.05 ft). Remarks. Records fair. No regulation or diversion above station. Rating table, Aug. 29, 1951, to Sept. 30, 1958 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used June 7-ll) 2.0 110 2.3 146 2.6 197 3.0 302 3.6 592 Discharge, In cubic feet per second, 1957 Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. 1 - 127 7 _ 137 13 - 131 19 - 128 25 - 133 2 - 127 8 - 137 14 - 129 20 - 128 26 - 134 3 - 127 9 - 136 15 - 131 21 - 128 27 - 137 4 - 127 10 - 136 16 - 129 22 - 132 28 - 134 5 - 129 11 - 133 17 - 131 23 - *136 29 128 133 6 - 132 12 - 132 18 - 127 24 - 133 30 127 131 31 126 - Total _ 3,945 _ 132 _ 6.17 _ 6.86 Runoff In acre-feet ...... - 7,820 * Discharge measurement made on this day. Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 127 127 208 208 245 205 189 205 176 145 146 138 2 129 126 223 193 225 199 191 203 171 TSS 149 138 3 128 125 212 *184 214 189 189 201 171 ISO 148 140 4 129 125 199 176 203 186 188 197 171 150 145 140 5 128 123 189 171 203 186 184 197 170 152 146 137

6 123 123 *237 168 199208" 176 180 195 182 152 146 140 7 126 123 270 164 175 180 195 ISO 156 146 137 8 125 123 270 163 230 171 180 197 156 154 145 137 9 122 122 248 161 320 168 - 186 199 *155 154 145 138 10 122 13T 223 170 417 166 223 201 155 154 145 134 11 121 178 210 191 320 163 210 197 155 155 145 134 12 122 286 197 208 356 *161 205 191 155 155 143 134 13 186 407 188 203 417 161 203 189 156 155 146 136 14 121 320 189 228 335 161 203 189 158 154 146 1.49 15 118 267 182 328 302 161 223 189 158 152 146 TIF 16 118 230 180 332 296 160 259 191 160 155 145 146 17 118 210 191 328 302 16T 296 191 161 156 145 145 18 117 203 199 270 313 161 286 193 161 160 143 141 19 117 193 320 232 280 161 397 193 161 158 143 145 20 117 180 348 212 253 163 592 189 154 154 142 138 21 116 176 276 193 232 180 412 189 150 154 143 142 22 136 171 237 182 235 170 320 191 146 158 142 138 23 228 168 214 203 240 175 280 191 145 158 142 137 24 170 166 228 250 273 189 *256 186 T48 156 142 137 25 152 164 299 256 289 199 240 186 149 155 *142 138 26 133 164 397 242 259 197 230 184 149 156 141 137 27 131 161 302 262 232 193 223 184 150 160 141 136 28 131 158 299 332 216 189 214 178 148 154 141 134 29 *134 155 283 352 - 191 210 175 146 *149 150 133 30 138 164 248 302 208 113 146 149 143 134 31 131 223 *270 191 182 148 141 Total 4,114 5,370 7,489 7,134 7,614 5,489 7,357 5,921 4,723 4,766 4,473 4,160 Mean 133 179 242 230 272 177 245 191 157 154 144 139 Cfsm 6.21 8.36 11.3 10.7 12.7 8.27 11.4 8.93 7.34 7.20 6.73 6.50 In. 7.15 9.33 13.01 12.40 13.23 9.54 12.79 10.29 8.21 8.28 7.77 7.23 Ac-ft 8,160 10,650 14,850 14,150 15, 100 10,890 14,590 11,704 9,370 9,450 8,870 8,250 Calendar year 1957: Max - Mln - Mean - Cfam - In, - Ac-ft - Water year 1957-58: Max 592 Mln lie Mean 188 Cfsm 8.79 In. 119.23 Ac-ft 136,100 Peak discharge (base, 450 cfs). Nov. 13 (l a.m.) 504 cfs (3.36 ft); Dec. 19 (4 p.m.) 482 cfs (3.38 ft); Dec. 25 (8 p.m.) 477 cfs (3.39 ft); Feb. 10 (l a.m.) 472 cfs (3.38 ft); Apr. 19 (11:45 p.m.) 710 cfs (3.79 ft).______* Discharge measurement made on this day. LEWIS RIVER BASIN 185

2180. Lewis River near Cougar, Wash.

Location. Lat 46°03'30", long 122°12'40", in SE£ sec. 29, T. 7 N., R. 5 E. , on left bank 1 mile downstream from Swift Creek and 4 miles east of Cougar. Drainage area. 481 sq mi. Records available. July 1910 to March 1912 (gage heights only), June 1924 to September 1958 (discontinued). Gage. Water-stage recorder. Datum of gage Is 576.4 ft above mean sea level (river- profile survey). July 1910 to March 1912, staff gage at approximately present site at different datum. June 19 to Aug. 25, 1924, staff gage and Aug. 26, 1924, to Dec. 27, 1934, water-stage recorder, at present site at datum 2.0 ft higher. Average discharge. 34 years (1924-58), 2,888 cfs (2,091,000 acre-ft per year). Extremes. Maximum daily discharge during year, 14,000 cfs Apr. 20: no flow Sept. 30. 1510-12, 1924-58: Maximum discharge, 54,400 cfs Dec. 21, 1933 (gage height, 15.7 ft, datum then in use), from rating curve extended above 17,000 cfs; minimum, that of Sept. 30, 1958. Maximum stage known since 1917. that of Dec. 21, 1933. Flood of Dec. 17 or 18, 1917, reached a stage of 14.0 ft (discharge, 45,000 cfs). Remarks. Records good except those for periods of Indefinite stage-discharge relation, which are fair. Slight regulation at times from Swift Dam construction until Sept. 29 when dam was completed and reservoir began filling. No diversion above station. Revisions (water years). WSP 904: 1939. WSP 964: Drainage area. WSP 1318: 1925(M), 1928(M), 1931(M) , 1933(M) .

Rating tables, water year 1957-58, except periods of Indefinite stage-discharge relation (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Apr. 20 Apr. 21 to Sept. 30 4.1 650 8.0 7,800 2.0 170 5.0 2,330 5.0 1,340 9.0 11, 700 2.5 300 6.0 3,880 6.0 2,700 10.0 16,900 3.0 520 7.0 6,000 7.0 4,890 3.5 820 9.0 13,000 4.0 1,230 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 706 881 2,250 3,900 *6,210 5,470 2,620 3,500 3,090 1,470 1,050 855 2 734 846 2,350 *3,500 5,380 4,670 2,730 *3,630 2,880 1,430 1,010 827 3 748 818 2,250 3,250 4,620 4,090 2,750 3,720 2,700 *1,420 1,000 820 4 713 804 2,150 *3,000 4,140 3,650 2,570 3,700 2,600 1,440 970 813 5 790 783 2,100 2,800 3,970 *3,420 2,490 3,700 2,740 1,460 954 806 6 832 769 2,700 2,600 5.800 3,050 2,410 3,810 5,970 1,390 954 806 7 790 755 3,900 2,500 3,800 2,840 2,340 3,880 3,480 1,440 946 806 a 797 741 4,400 2,350 4,410 2,700 2,290 4,190 2,880 1,390 954 813 9 769 727 4,200 2,250 6,620 2,540 2,300 4,470 2,630 1,320 946 820 10 720 m 3,600 2,350 9,800 2,340 3,030 4,670 *2,490 1,300 938 813 11 699 2,100 3,400 2,400 7,940 2,200 3,110 4,790 2,370 1,280 938 799 12 713 3,500 3,250 2,800 8,120 2,110 3,160 4,160 2,260 1,280 914 785 13 1,010 4,200 2,950 2,750 8,920 2,000 3,440 3,550 2,160 1,230 898 799 14 986 3,250 2,950 3,050 7,530 1,880 3,610 3,260 2,120 1,220 883 869 15 797 2,750 2,750 5,300 6,870 1,830 4,010 3,300 2,140 1,200 876 898 16 734 2,700 2,700 5,900 6,990 1,750 5,690 3,680 2,150 1,180 876 848 17 734 2,800 2,750 7,500 6,930 1,740 8,040 4,160 2,160 1,180 869 906 18 706 2,300 2,750 6,600 8,400 1,760 9,320 4,530 2,160 1,180 869 548 19 678 2,150 4,100 5,600 8,320 1,700 10,200 4,850 2,120 1,180 869 883 20 657 2,000 *5,800 *5,080 7,080 1, 700 14,000 4,650 2,080 1,130 862 862 21 650 1,850 5,200 4,230 6,150 1,900 12,400 4,670 2,000 1,120 869 827 22 W 1,750 4,400 3,540 5,860 2,040 *9,240 4,930 1,910 1,110 869 820 23 1,250 1,700 3,900 3,690 5,920 2,040 7,120 5,050 1,850 1,100 869 792 24 1,450 1,650 3,800 5,580 7,740 2,460 5,620 4,556 1,890 1,080 862 778 25 1,400 1,650 5,300 5,410 10,700 2,800 4,850 4,530 1,840 1,070 855 792 26 1,300 1,700 8.200 4,940 10,200 2,850 4,330 4,530 1,660 1,060 *848SIS" 771 27 1,200 1,600 6,700 5,110 8,010 2,730 3,880 *4,910 1,650 1,060 764 28 1,100 1,600 6,300 7,200 6,540 2,650 3,620 4,100 1,600 1,050 848 750 29 1,050 1,500 5,800 8,260 _ 2,600 3,460 3,460 1,520 1,060 890 342 30 *1,020 1,550 5,100 8,120 2,750 3,390 3,100 1,510 1.050 914 0_ 31 951 4,400 7, 260 2,650 3,200 1,636 869 Total 27,446 52,200 122,400 138,820 190,970 80,910 148,020 127,230 68,610 37,890 28,097 23,312 Mean 885 1,740 3,948 4,478 6,820 2,610 4,934 4,104 2,287 1,222 906 777 Cfsm 1.84 3.62 8.21 9.31 14.2 5.43 10.3 8.53 4.75 2.54 1.88 1.62 In. 2.12 4.04 9.46 10.73 14.77 6.26 11.44 9.84 5.30 2.93 2.17 1.80 Ac-ft 54,440 103,500 242,800 275,300 378,800 160,500 293,600 252,400 136,100 75,150 55,730 46,240 Calendar year 1957= Max 14,300 Min 650 Mean 2,463 Cfsm 5.12 In. 69.51 Ac-ft 1,783,000 Water year 1957-58: Max 14,000 Mln 0 Mean 2,865 Cfsm 5.96 In. 80.86 Ac-ft 2,075,000 Peak discharge (base, 9,000 cfs).--Dee. 25 (time and discharge unknown); Feb. 10 (7 a.m.) 10,700 cfs (8.82 ft)} Feb. 25 (8 p.m.) 11,800 cfs (9.08 ft); Apr. 20 (time and discharge unknown). * Discharge measurement made on this day. Hots.. Stage-discharge relation indefinite Oct. 24-29, Nov. 11 to Jan. 19, Apr. 20; discharge estimated on basis of records for station above Muddy River, near Cougar.

534540 O -60 -13 186 LEWIS RIVER BASIN

Reservoirs in Lewis River basin, Wash.

Yale Reservoir. Lat 45"57"50", long 122°20'00", in HE^ sec. 32, T. 6 N., R. 4 E., at left end of Yale Dam on Lewis River Just upstream from intake, 500 ft upstream from power house, 1 mile upstream from Canyon Creek, and 3 miles southeast of Yale. Drainage area, 596 sq mi. Records available, August 1952 to September 1958. Sage, water-stage recorder and long-distance indicator in powerhouse. Datum of gage is at mean sea level (levels by Pacific Power & Light Co.). Prior to Feb. 1, 1954, indicating gage at same site and datum. Maximum contents during year, 401,800 acre-ft on many days; maximum elevation, 490.04 ft Feb. 24. 25, 28, Mar. 1, 2; minimum contents, 276,100 acre-ft Apr. 9 (elevation, 452.47 ft). Maximum contents during period 1952-58: 402,100 acre-ft Mar. 13, 1954 (elevation, 490.08 ft); minimum observed since reservoir was first filled, 227,600 acre-ft Feb. 22, 1957 (elevation, 435.65 ft). Reservoir is formed by rock-fill dam; storage began July 31, 1952. Usable capacity, 189,530 acre-ft between elevations 430 (lower limit for economic operation) and 490 ft (top of spillway gates). Dead storage, 212,250 acre-ft. Records given herein repre sent total contents. Water used by Pacific Power & Light Co. for power development. Records of stage and data from which capacity table was computed furnished by Pacific Power & Light Co. Lake Merwin.--Lat 45°57'25", long 122°33'15", in SW£ sec. 34, T. 6 N., R. 2 E., on dam on Lewis River at Ariel. Drainage area, 730 sq mi. Records available, March 1931 to September 1958. Sage, water-stage recorder, and long distance indicator in powerhouse. Datum of gage is at mean sea level (levels by Pacific Power & Light Co.). Maximum contents during year, 422,800 acre-ft Dec. 28, Jan. 23, Feb. 4, 24, Apr. 23, 24 (eleva tion, 239.63 ft); minimum, 371,500 acre-ft Oct. 10 (elevation, 226.42 ft). Maximum contents during period 1931-58, not determined; minimum observed since reservoir was first filled, 164,200 acre-ft Dec. 5, 1936 (elevation, 166.7 ft). Reservoir is formed by concrete arch dam completed in 1931. Usable capacity, 246,000 acre-ft between elevations 165 (lower limit of regulation set by Federal Power Commission) and 235 ft (top of spillway gates) above mean sea level. Dead storage, 159,000 acre-ft. Records given herein represent total contents. Water used for power.

Month-end elevation and total contents, water year October 1957 to September 1958 Contents Change in Contents Change in Elevation (acre- contents Elevation (acre- contents Date (feet)t feet) (acre-feet) (feet)t feet) (acre-feet) Yale Reservoir Lake Merwin 488.9 397,600 a237.8 415,600 479.2 362,200 -35,400 230.0 385, 200 -30,400 456.0 286,600 -75,600 234.0 400,700 +15,500 488.9 397,600 +111,000 239.2 421,200 +20,500 Calendar year 1957 .... - - +23,200 - - +17,000 490.0 401,800 +4,200 239.5 422,400 +1,200 489.7 400,600 -1,200 239.6 422,800 +400 460.4 300,100 -100,500 233.0 396,800 -26,000 487.0 390,500 +90,400 237.9 416,000 +19,200 488.5 396,100 +5,600 238.9 420,000 +4,000 486.2 387,600 -8,500 237.3 413,700 -6,300 488.2 395,000 +7,400 238.0 416,400 +2,700 489.8 401,000 +6,000 239.1 420,800 +4,400 Sept. 30...... 489.0 398,000 -3,000 239.5 422,400 +1,600 Water year 1957-58. . . . - - +400 - - +6,800 t Elevation at 12 p.m. a Elevation furnished by Pacific Power & Light Co. from their powerplant record. LEWIS RIVER BASIN 187 2205. Lewis River at Ariel, Wash. Location. Lat 45 857'10", long 122 833'45", in NW£UE£ sec. 4, T. 5 N., R. 2 E., on right bank at Ariel, half a mile downstream from Ariel Dam and powerplant and 3 miles upstream from Cedar Creek. Drainage area. 731 sq'mi. Records available. July to October 1909, November 1909 (gage heights only), July to October 1922, July 1923 to September 1958. Published as "near Ariel" 1922-29. Prior to October 1952, discharge measurements made at site half a mile downstream; low dis charges not equivalent due to local inflow. Gage. Water-stage recorder. Datum of gage is 44.0 ft above mean sea level, unadjusted ^levels- by Pacific Power & Light Co.). July to November 1909, staff gage at site 4 miles upstream at different datum. July 27 to Oct. 28, 1922, and July 31, 1923, to Apr. 20, 1930, staff gages at site half a mile downstream at datums 3.90 and 0.90 ft higher, respectively, than present datum. Average discharge. 35 years (1923-58), 4,709 cfs (3,409,000 acre-ft per year), adjusted for storage In Lake Merwin Reservoir since March 1931, and Yale Reservoir since August 1952. Extremes. Maximum discharge during year, 18,300 cfs Feb. 12 (gage height, 10.52 ft); minimum, 568 cfs Aug. 30, Sept. 8 (gage height, 0.07 ft). 1909, 1922-58: Maximum discharge, 129,000 cfs Dec. 22, 1933 (gage height, 35.0 ft, from floodmarks), from rating curve extended above 56,000 cfs on basis of computation of peak flow over dam; no flow at times June 30, July 1-3, 6-9, 1931 (caused by regu lation during construction of Ariel Dam); minimum daily, 1 cfs July 6, 1931. Remarks. Records excellent. No diversion. Flow regulated by Lake Merwin and Yale Reservoir (see preceding page), and by construction on Swift Dam. Cooperation. Gage-height record collected in cooperation with Pacific Power & Light Co. Revisions (water years). WSP 884: 1938. WSP 984: 1936-37, 1940-42. WSP 1318: 1924-30(M).

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 0.3 680 2.0 2,03O 5.0 6,300 10.0 17,000 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 3,290 4,140 2.240 8,180 11,400 8.450 6,070 7,120 1,790 1,240 1,800 750 2 4,450 4,100 4,680 8,140 10,300 7,790 6,610 6,670 5,680 1,570 756 1,400 3 4,470 3,000 5,200 7,710 9,580 8,060 6,900 6,510 5.690 1,450 750 1,280 4 4,350 4,320 5,270 7,670 8,890 6,760 6,690 2,950 5,220 748 1,640 1,280 5 3,070 4,020 5,430 7,530 8,390 6,570 6,070 5,910 4,770 748 1,450 1,280 6 3,420 2,200 5,660 7,710 8,070 7,140 5,660 5,790 5,400 742 1,070 750 7 4,250 3,500 7,230 7,730 7,170 7,130 5,800 5,780 2,570 1,510 756 750 8 4,250 4,660 4,100 6,850 6.280 7,430 5,090 5,750 905 1,550 730 1,040 9 4,310 3,970 5,470 7,640 6,620 6,700 5,190 5,860 4,580 1,360 725 742 10 1,450 2,820 5,650 7,650 13,800 6,950 5,190 5,200 *4,540 1,340 750 750 11 1,450 4,210 7,430 7,550 12,200 6,870 4,930 5,650 4,620 1,530 750 1,250 12 685 4,970 6,680 7,480 13,500 *6,270 3,000 5,740 4,640 736 750 976 13 690 6,040 6,490 7,650 15.900 6,650 1,750 5,910 4,090 750 750 748 14 1,430 7,560 6,130 7,990 12.500 6,740 4,850 5,890 2,800 1,260 750 907 15 1,450 8,100 5,990 8,040 11,900 6,260 5,030 5,460 824 1,250 750 1,970 16 1,460 7,900 6,580 8,080 12,000 5,910 5,080 5,670 4,120 1,290 750 1,100 17 1,460 6,160 6,740 8,160 11,800 6,440 5,670 5,210 4,010 1,250 750 1,470 18 1,450 6,890 6,440 9,270 13,000 7,070 5,920 2,160 5,700 1,450 742 1,550 19 695 6,860 6,660 10,100 11,700 6,820 5,610 5,670 5,700 742 756 1,080 20 700 6,580 7,580 9,470 10, 400 6,560 5,410 5,400 3,420 756 790 748 21 1,440 6,860 7,340 9,490 9,340 6,520 6,280 5,150 1,700 1,280 750 748 22 1,450 6,770 7,260 8,740 9,200 5,600 10,600 5,580 784 1,550 690 940 23 1,430 6,520 7,570 8,430 8,900 5,500 11,100 5,280 2,140 2,020 680 956 24 1,490 2,810 7,570 9,220 11,400 5,750 *9,550 5,750 2,180 2.050 680 1,540 25 1,930 5,830 6,930 8,800 14,700 5,950 8,650 1,670 2,110 0,500 680 971 26 1,940 6,130 *8,040 8,230 13,000 6,570 8,020 5,580 2,060 1,860 *700 799 27 1,960 4,550 8,920 8,560 10,500 6,500 7,740 5,510 2,090 715 748 766 28 3,860 1,880 12.800 12,300 9,390 6,430 6,940 5,880 778 1,550 760 766 29 4,200 3,870 12,700 14, 500 6,400 7,000 6,510 rrs 1,550 1,550 772 30 3,850 3,690 10 400 *15.500 5, 890 7,050 2,070 1,650 *1,490 750 772 31 *3,980 10^700 14,200 6,470 4,700 2,020 750 Total 76,310 150,910 217,880 278,370 301,830 204,130 189,250 159,540 93,157 59,717 26,405 50,551 Mean 2,462 5,030 7,028 8,980 10,780 6,585 6,508 5,140 3,105 1,281 852 1,012 Ac-ft 151,400 299,300 432,200 552,100 598,700 404,900 575,300 516,000 184,700 78,780 52,370 60,200 (t) -65,800 -60,100 031,500 +5,400 -800 -126,500 +109,600 +9,600 -14,800 +10,100 HO, 400 -1,400 Adjusted for change In contents In Lake Merwin and Yale Reservoir

Mean 1,392 4,020 9,168 9,067 10,770 4,528 8,149 5,295 2,855 1,445 1,021 988 Cfsm 1.90 5.50 12.5 12.4 14.7 6.19 11.1 7.24 5.91 1.98 1.40 1.55 In. 2.20 6.14 14.46 14.50 15.54 7.14 12.44 8.35 4.56 2.28 1.61 1.51 Ac-ft 85,600 259,200 565,700 557 , 500 597,900 278,400 484,900 325,600 169,900 88,880 62,770 58,800

Calendar year 1957: Max 15,600 Min 680 Mean 4.,252 Ac-ft 3,064, 000 Water year 1957-58: Max 15,900 Mln 680 Mean 4,,845 Ac-ft 3,506, 000 Adjusted Calendar year 1957: Mean 4,287 Cfsm 5.86 In. 79, .65 Ac-ft 5,104, 000 Water year 1957-58: Mean 4,852 Cfsm 6.64 In. 90..15 Ac-ft 3,515, 000 * Discharge measurement made on this day. t Change In contents, In acre-feet, In Lake Merwin and Yale Reservoir. 188 LEWIS RIVER BASIN

2225. East Fork Lewis River near Heisson, Wash.

Location. Lat 45°50'10", long 122°27<50", in N? sec. 17, T. 4 N., R. 3 E., on right bank 60 ft downstream from Basket Creek, If miles northeast of Heisson, and 20 miles upstream from mouth. Drainage area. 125 sq mi. Records available. September 1929 to September 1958. Gage. Water-stage recorder. Datum of gage is 366.8 ft above mean sea level (from river- profile survey). Average discharge.--29 years, 744 cfs (538,600 acre-ft per year). Extremes. Maximum discharge during year, 6,110 cfs Apr. 20 (gage height, 8.10 ft); minimum, 41 cfs Sept. 7, 8 (gage height, 0.20 ft). 1929-58: Maximum discharge, 15,600 cfs Dec. 22, 1933 (gage height, 12.3 ft), from rating curve extended above 12,000 cfs; minimum, 29 cfs Nov. 3, 1935 (gage height, 0.04 ft). Remarks. Records excellent. No regulation or diversion above station.

Rating table, water year 1957-58 (gage height. In feet, and discharge, In cubic feet per second) 1.5 220 4.0 1,310 Z.O 360 6.0 3,100 1.0 124 3.0 745 8.0 5,940 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 50 155 1,160 1,190 2,440 1.070 602 570 166 242 65 51 2 100 140 1,610 994 1,890 925 632 52? 143 2TT 63 50 3 99 129 1,190 845 1,510 820 664 483 140 184 64 48 4 83 124 895 732 1,200 722 610 448 138 172 48 5 134 114 750 646 1,070 718 562 424 120 155 47 6 115 108 3,020 578 935 632 502 402 401 142 58 46 7 99 104 3,640 530 875 619 472 378 318 130 57 41 8 99 97 2,120 530 1,080 632 458 357 *230 126 60 42 9 118 96 1,480 5~90486 1,760 619 47T 345 208 124 57 47 10 89 132 1,100 2,400 586 935 327 206 121 56 47 11 80 835 880 1,060 1,770 562 870 315 197 110 54 46 12 79 1,690 732 1,650 2,600 *538 745 294 191 106 55 47 13 290 2.790 628 1,500 5.220 502 700 269 182 104 53 64 14 26T 2,150 632 1,700 2,240 480 750 248 174 101 53 115 15 163 1,390 538 2,960 2,010 466 835 238 165 93 52 141 16 129 915 722"522 2,330 2,250 448 1,870 232 154 88 51 84 17 115 668 2,670 2,060 2,480 220 137 88 51 HE 18 99 578 1,160 2,000 1,970 510 2,030 208 130 95 53 81 19 90 164 *3,550 1,510 1,600 490 2,300 211 126 96 50 105 20 85 522 3,580 1,250 1,280 522 5.220 193 127 92 50 94 21 82 452 3,140 1,070 1,070 606 3,420 186 120 89 49 95 22 83 402 2,430 905 1,070 691 *2,570 174 109 88 48 92 23 208 360 2,000 1,080 1,050 628 1,990 193 108199" 86 49 79 24 238 327 2,290 1,740 1,440 785 1,580 172 80 *48 74 25 250 312 3,140 1,850 1,910 845 1,260 176 225 76 47 93 26 261 321 5.760 1,590 1,870 845 1,060 176 165 74 46 95 27 211 289 2,730 1,530 1,570 740 900 240 182 74 47 80 28 174 375 3,100 2,220 1,260 655 780 184 199 *66 51 72 29 154 321 2,620 2,630 - 610 686 159 186 c'e'65 58 67 30 412 1,930 *2, 970 614 614 150 269 bo 60 64 31 *178 1,490 5.020 578 165 70 50 Total 4,415 16,922 58,539 46,356 47,400 19,938 38,569 8,659 5,415 3,414 1,683 2,174 Mean 142 564 1,888 1,495 1,693 643 1,286 279 180 110 54.3 72.5 Cfsm 1.14 4.51 15.1 12.0 13.5 5.14 10.3 2.23 1.44 0.880 0.434 0.580 In. 1.31 5.03 17.42 13.79 14.10 5.93 11.48 2.58 1.61 1.02 0.50 0.65 Ac-ft 8,760 33,560 116,100 91,950 94,020 39,550 76,500 17,170 10,740 6,770 3,340 4,310 Calendar year 1957: Max 5,260 Mln 42 Mean 645 Cfsm 5.16 In. 69.99 Ac-ft 466,600 Water year 1957-58: Max 5,220 Mln 41 Mean 694 Cfsm 5.55 In. 75.42 Ac-ft 502,800 Peak discharge (base, 6,100 efs). Apr. 20 (12 m.) 6,110 cfs (8.10 ft). * Discharge measurement made on this day KALAMA RIVER BASIN 189

2235. Kalama River below Italian Creek, near Kalama, Wash.

Location. Lat 46°02'40", long 122°48'50", in NE^SWv sec. 33, T. 7 N., R. 1 W., on right bank 2| miles northeast of Kalama, 3 miles upstream from mouth, and 5 miles downstream from Italian Creek. Drainage area. 201 sq mi. Records available. September 1946 to September 1958. Gage. Water-stage recorder. Altitude of gage is 20 ft (from topographic map). Prior to Oct. 7, 1952, staff gage and crest-stage indicator at site about 70 ft downstream at same datum. Average discharge.--12 years, 1,260 cfs (912,200 acre-ft per year). Extremes. Maximum discharge during year, 8,080 cfs Dec. 19 (gage height, 9.83 ft); minimum, 165 cfs Sept. 12; minimum gage height, 2.25 ft Sept. 5, 8, 9, 12. 1946-58: Maximum discharge, 16,000 cfs Dec. 9, 1953 (gage height, 14.93 ft); mini mum, 165 cfs Sept. 24, 1957, Sept. 12, 1958; minimum gage height observed, 1.76 ft Sept. 13, 1951. Remarks. Records excellent except those for periods of shifting control, which are good. Small diversion for fish hatchery returned to stream above gage. No regulation. Revisions (water years).--WSP 1318: 1948-49(M).

Rating table, water year 1957-58, except period of shifting control (gage height, In feet, and discharge, In cubic feet per second)

2.2 155 5.O 2,360 3.O 675 6.0 3,400 4.O 1,460 S.O 5,740 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 211 382 1,850 1,800 3,430 .920 1,320 1,100 570 ITS'444 153"253 200 2 272 369 2,220 1,550 2,790 ,680 1,420 1,050 5OO 195 3 284 343 1,680 1,360 2,330 ,500 1,470 1,OOO 486 395 253 195 4 259 330 1,350 1,230 1,980 ,360 1,340 956 479 395 253 190 5 343 310 1,160 1,130 1,940 ,320 1,250 916 472 402 247 185 6 330 310 2,270 1,080 1,700 ,230 1,160 900 948 332 241 185 7 304 *291 3,160 1,040 1.610 ,190 1,O80 876 812 376 241 185 3 291 278 2,320 1,O40 1,840 ,200 1,030 860 654 362 235 180 9 265 272 1,820 1. OOP 2,880 ,160 996 844 598 362 235 190 1O 247 365 1,510 1,140 3,990 ,120 1,280 825 598 350 229 180 11 235 1,280 1,290 1,670 2,910 1,060 1,260 812 *577 336 229 180 12 241 2,550 1,130 2,430 3,050 1,020 1,170 752 570 330 229 170 13 508 3,920 1,000 2,020 3,830 972 1,160 710 542 330 223 175 14 521 3,410 964 2,360 3,170 *948 1,130 675 528 330 223 211 15 416 2,280 876 4.660 2,690 932 1,310 668 507 317 217 255 16 362 1,600 900 3,730 3,090 908 2,390 675 479 310 217 200 17 336 1,250 1,130 3,920 2,920 916 3,170 668 465 310 217 235 18 304 1,060 2,060 2,940 3,000 892 3,020 661 453 310 211 190 19 278 1,070 4,600 2,300 2,530 884 2,610 668 451 304 211 190 2O 253 932 5,370 1,940 2,100 892 4.940 619 444 298 205 211 21 241 836 *3,810 1,670 1,820 980 3,760 612 423 291 205 200 22 247 768 3,100 1,460 1,970 1,080 3,170 605 416 284 205 205 23 521 717 2,640 1,660 1,960 1,080 2,550 605 402 284 205 190 24 675. 682 2,940 2,700 2,840 1,190 2,1OO 563 464 278 205 180 25 577 675 4,090 2,650 3,510 1,460 *1,830 563 479 272 200 211 26 514 668 5,740 2,270 3,180 ,640 1,610 542 430 272 200 205 27 444 626 4,020 2,070 2,690 ,440 1,440 577 444 272 *200 195 28 402 689 3,690 3,330 2,230 ,300 1,310 542 451 265 205 185 29 382 619 3,330 *4,290 - ,240 1,220 507 451 259 211 185 30 493 682 2, 630 4,500 ,240 1,150 486 472 259 247 180 3-1 430 2,140 4,250 ,240 549 259 205 Total 11,186 29,564 76,790 71,190 73,880 36,994 54,646 22,389 15,571 10,054 6,910 5,318 Mean 361 985 2,477 2,296 2,639 1,193 1,822 722 519 324 223 194 Cfsm 1.80 4.90 12.3 11.4 13.1 5.94 9.06 3.59 2.58 1.61 1.11 0.965 In. 2.07 5.47 14.21 13.17 13.67 6.84 10.11 4.14 2.,88 1.86 1.28 1.08 Ac-ft 22,190 58,640 152,300 141,200 146,500 73,380 108,400 44,410 30,880 19,940 13,710 11,540 Calendar year 1957: Max 7,260 Mln 170 Mean 993 Cfsm 4.94 In. 67.04 Ac-ft 718,600 Water year 1957-58: Max 5,740 Mln 170 Mean 1,137 Cfsm 5.66 In. 76.78 Ac-ft 823,100 Peak discharge (base, 6,000 cfs).--Dec. 19 J:30 p.m.) 8,080 cfs (9.83 ft); Dec. 26 (1:30 a.m.) 7,OOO efs (9.OO ft). ___ * Discharge measurement made on this day. Note. Shifting-control method used Oct. 17 to Nov 10, Sept. 22-30. 190 COWLITZ RIVER BASIN

2265. Cowlitz River at Packwood, Wash.

Location. Lat 46°36'40", long 121°40'45", in SE£ sec. 16, T. 13 N., R. 9 E., on right bank 100 ft upstream from Forest Service bridge, half a mile upstream from Skate Creek, and half a mile northwest of Packwood. Drainage area. 287 sq mi. Records available. July 1911 to December 1919, September 1929 to September 1958. Pub- lished as "at Lewis" 1911-19. Gage. Water-stage recorder. Datum of gage is 1,048.0 ft above mean sea level (Bureau of Public Roads bench mark). July 1, 1911, to Dec. 31, 1919, staff gages at sites about 1 mile upstream at different datums. Sept. 30, 1929, to Jan. 1, 1930, staff gage at present site and datum. Average discharge. 37 years, 1,623 cfs (1,175,000 acre-ft per year). Extremes. Maximum discharge during year, 7,240 cfs May 25 (gage height, 8.02 ft); mini mum, 270 cfs Oct. 21 (gage height, 2.50 ft). 1911-19, 1929-58: Maximum discharge, 36,600 cfs Dec. 21, 1933 (gage height, 13.0 ft), from rating curve extended above 12,600 cfs; minimum, 130 cfs Nov. 29, 1952; minimum gage height, 2.47 ft Sept. 26, 1955. Remarks. Records good. Small diversions for domestic use. No regulation. Revisions (water years). WSP 884: 1938. WSP 1348: 1916-18(M), 1934.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second)

2.5 270 5.O 1,820 3.0 455 6.0 3,050 3.5 665 7.0 5,010 4.0 965 8.0 7,340 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 475 629 812 1,090 1,360 1.660 690 1.740 5,510 1,590 824 580 2 471 543 856 1,010 1,230 1,470 700 2,616 5,050 1,550 824 471 3 415 487 856 902 1,150 1,290 685 2,250 2,890 1,380 806 599 4 364 451 818 836 1,060 1,170 647 2,250 2,880 1,460 710 572 5 344 415 742 318 1,000 1,120 624 2,520 5,740 1,450 *656 599 6 330 395 1,170 812 979 1,000 606 2,420 4.240 1,500 715 455 7 344 379 2,040 972 958 6TT 2,710 5.S16 1.580 754 515 8 333 361 2,500 812 1,070" 909 647 5,510 2,970 1.47O 754 545 9 312 347 2,010 812 1,200 856 660 5,720 2,800 1,290 788 535 10 319 55J 1,670 876 1,450 782 788 5,840 2,610 1,240 806 547 11 316 624 1,460 937 1,340 737 850 3,860 2,560 1,210 830 479 12 308 1,010 1,320 1,150 1,460 705 950 2,820 2,540 1,190 755 587 13 523 1.670 1,170 1,160 1,850 670 1,210 2,220 2,240 1,080 675 558 14 507 1,320 1,100 1,290 1,730 642 1,38O 2,080 2,36O 1,O40 665 555 15 391 1,040 972 2,620 1,510 616 1,560 *2,590 2,480 1,020 656 523 16 350 856 909 2,990 1,570 595 1,590 5,190 2,750 1,040 652 506 17 372 732 916 4,120 1,630 584 1,870 5,880 5,070 1,150 595 620 18 333 665 909 3,166 2,360 575 2,010 4,360 5,140 1,180 595 499 19 305 616 1,060 2,370 »2,450 551 2,560 5,070 *5,150 1,150 602 784 20 291 551 1,580 1,930 2,260 555 6.410 4,880 5,170 1,040 620 555 21 274 511 1,530 1,590 2,080 638 4,570 5,660 5,070 995 665 555 22 355 495 1,290 1,390 2,250 670 5,270 6,540 2,880 995 675 471 23 812 503 1,100 1,320 2,430 670 2,540 6,550 2,700 965 690 427 24 909 511 1,180 1,940 3,380 788 2,120 5,960 2,710 958 715 415 25 993 527 1,590 1,780 5,840 812 1,820 6,580 2,220 957 715 559 26 850 551 2.680 1,550 2,940 806 1,580 6,540 1,950 950 675 451 27 660 527 2,166 1,400 2,340 794 1,400 5,940 2,000 986 624 427 28 551 523 1,890 1,630 1,950 788 1,500 4,880 1,750 1,010 547 459 29 503 479 1,690 1,710 759 1,260 5,650 1,540 1,010 eTSo" 415 30 1,060 527 1,440 1,640 748 1,410 5 290 1.460 944 580 391 31 T82 1,230 1,510 710 5)440 856 580 Total 15,196 18,599 42,590 47,907 50,841 25,606 48,078 120,090 81,500 55,752 21,408 14,545 Mean 490 620 1,374 1,545 1,816 826 1,605 3,874 2,717 1,155 691 485 Cfsra 1.71 2.16 4.79 5.38 6.55 2.88 5.59 13.5 9.47 4.02 2.41 1.69 In. 1.97 2.41 5.52 6.21 6.59 5.52 6.25 15.56 10.56 4.63 2.77 1.88 Ac-ft 30,140 36,890 84,480 95,020 100, 800 50,790 95,560 258,200 161,700 70,910 42,460 28,850 Calendar year 1957: Max 5,660 Min 274 Mean 1,376 Cfsra 4.79 In. 65.08 Ac-ft 996,300 Water year 1957-58: Max 6,580 Mln 274 Mean 1,430 Cfsm 4.98 In. 67.65 Ac-ft 1,036,000 Peak discharge (base, 8,000 cfs). No peak above base. * Discharge measurement made on this day. COWLITZ RIVER BASIN 191

2325. Cispus River near Handle, Wash.

Location. Lat 46°26'50", long 121°51'35", in NW£ sec. 18, T. 11 N., R. 8 E. (unsurveyed), on left bank 60 ft upstream from bridge to Tower Rock ranger station, 4 miles down stream from North Pork, and 8 miles southeast of Randle. Drainage area. 321 sq mi. Records available. October 1910 to February 1912, September 1929 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,221.60 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Mar. 1, 1912, staff gage at site 1 mile upstream at different datum. Sept. 28 to Oct. 31, 1929, staff gage and Nov. 1, 1929, to Nov. 26, 1949, Oct. 1-24, 1950, water-stage recorder, at site 450 ft upstream at datum 0.26 ft higher. Average discharge.--30 years (1910-11, 1929-58), 1,319 cfs (954,900 acre-ft per year). Extremes. Maximum discharge during year, 4,840 cfs Apr. 20 (gage height, 6.93 ft); mini mum, 296 cfs Oct. 21, 22 (gage height, 3.09 ft). 1910-12, 1929-58: Maximum discharge, 20,000 cfs Dec. 22, 1933 (gage height, 12.7 ft, site and datum then in use), from rating curve extended above 8,000 cfs; minimum, 183 cfs Dec. 30, 1936; minimum gage height, 2.55 ft Oct. 25, 1942, site and datum then in use. Remarks. Records excellent. No regulation or diversion above station. Revisions (water years). WSP 794: 1934. WSP 1288: Drainage area.

Rating tables, water year 1957-5S (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 25 Dec. 26 to Sept. 30 3.1 300 3.1 295 5.0 1,870 3.5 530 3.5 520 6.0 3,180 4.0 920 4.0 875 7.0 4,980 5.0 1,960 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 345 417 660 1,180 1,570 3^,950 859 1.760 2,040 811 540 3"S7430 2 366 388 *682 1,080 1,460 1,750 892 1,900 1,940 788 552 3 345 372 645 996 1,380 1,580 884 2,020 1,840 795 546 356 4 325 356 615 926 1,290 1,460 835 2,040 1,760 795 *478 345 5 340 350 586 867 1,240 1,370 803 2,110 2,000 788 514 356 6 335 340 849 835 1,190 1,240 788 2,240 2.430 795 514 356 7 330 335 1,430 811 1.160 1,160 755 2,370 2,160 519"884 520 367 8 325 330 1,420 811 1,280 1,090 811 2,750 1,860 5"50"566 384 9 325 325 1,310 788 1,580 1,010 803 3,000 1,750 750 594 10 320 340 1,200 555 1,910 952 943 3,100 1,680 720 526 584 11 *315 319 1,110 909 1,730 909 1,070 3,180 1,580 720 526 356 12 315 735 1,050 1,070 1,700 867 1,170 2,600 1,490 720 502 345 13 366 1,520 965 1,090 1,830 827 1,370 2,090 1,430 685 472 325 14 411 1,190 920 1,120 1,730 788 1,470 1,950 1,410 671 460 389 15 350 965 839 1,530 1,610 772 1,450 *2,030 1,410 650 460 406 16 325 798 822 1,910 1,660 742 1,540 2,400 1,410 650 454 378 17 325 705 866 2,630 1,720 728 2,100 2,780 1,440 657 442 *412 18 315 652 920 2,366 2,440 699 2,400 3,060 1,440 664 442 372 19 310 615 1,080 2,000 2,570 678 2,320 3,400 1,420 650 450 430 20 305 551 1,390 1,740 *2,330 685 4,430 3,370 1,400 650 430 394 21 300 517 1,320 1,520 2,140 *758 4,260 3,400 1,370 611 430 378 22 3TO 504 1,170 1,360 2,160 788 3,470 3,620 1,310 618 436 372 23 484 498 1,070 1,380 2,330 788 2,810 5.810 1,260 604 442 362 24 579 484 1,070 1,910 3,460 926 2,390 3,480 1,220 585 436 345 25 55T 484 1,450 1,730 4,150 978 2,090 3,480 1,130 578 442 356 26 544 504 2.660 1,550 3,280 943 1,870 3,440 1,000 572 442 345 27 478 478 2,110 1,450 2,640 918 1,700 3,530 1,020 585 436 345 28 441 484 1,880 1,780 2,240 909 1,570 3,030 952 604 456 540 29 411 453 1,660 1,870 - 900 1,520 2,520 875 604 436 555 30 441 472 1,460 1,870 1,580 2 200 845 572 448 325 31 453 1,300 1,720 875 2^150 552 424 Total 11,685 16,281 36,509 43,672 55,780 30,949 50,986 84,810 44,870 21,127 14,722 11,049 Mean 377 543 1,178 1,409 1,992 998 1,700 2,736 1,496 682 475 368 Cfsm 1.17 1.69 3.67 4.39 6.21 3.11 5.30 8.52 4.66 2.12 1.48 1.15 In. 1.35 1.89 4.23 5.06 6.46 3.59 5.91 9.83 5.20 2.45 1.71 1.28 Ac-ft 23,180 32,290 72,410 86,620 110,600 61,390 101,100 168,200 89,000 41,900 29,200 21,920 Calendar year 1957: Max 7,040 Mln 300 Mean 1,095 Cfsm 3.41 In. 46.31 Ac-ft 793,000 Water year 1957-58: Max 4,430 Mln 300 Mean 1,157 Cfsm 3.60 In. 48.96 Ac-ft 837,800 Peak discharge (base. 5,400 cfs). Feb. 25 (4 to 6 a.m.) 4,470 cfs (6.74 ft)j Apr. 20 (5:50 p.m.) 4,840 cfs (6.95 ft); May 23 (1 p.m.) 5,890 cfs (6.43 ft).______* Discharge measurement made on this day. 192 COWLITZ RIVER BASIN

2335. Cowlitz River near Kosmos, Wash.

Location Lat 46°28'00", long 122°07'20", in SE£ sec. 1, T. 11 N., R. 5 E., on right bank half a mile downstream from Tumwater Creek, l| miles downstream from Cispus River, and 4 miles southeast of Kosmos. Drainage area. 1,042 sq mi. Records available.--October 1947 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Gage.--Water-stage recorder. Datum of gage is 759.29 ft above mean sea level (levels by city of Tacoma). Prior to Dec. 3, 1948, staff gage at site half a mile upstream at different datum. Average discharge. 11 years, 5,170 cfs (3,743,000 acre-ft per year). Extremes.--Maximum discharge during year, 20,500 cfs Apr. 20 (gage height, 13.00 ft); min- ImuiT 834 cfs Oct. 21, 22 (gage height, 2.99 ft). 1947-58: Maximum discharge, 33,800 cfs Feb. 11, 1951 (gage height, 16.60 ft); mini mum, 518 cfs Nov. 29, 1952 (gage height, 2.34 ft). Remarks.--Records excellent. Ho regulation. Small diversion for domestic use and irrigation above station. Revisions. WSP 1218: Drainage area.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second)

3.0 840 8.0 6,350 4.0 1,470 10.0 10,900 5.0 2,280 13.0 20,500 6.0 3,350 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,090 1,570 2,200 4,810 5,770 6,770 2,800 5,570 7,510 3.070 *1.760 1,340 2 1,110 1,410 2,770 4,400 5,340 6,0l6 2,890 6,100 7,100 2,916 1,740 1,230 3 1,110 1,300 2,720 3,990 5,050 5,420 2,870 6,550 6,660 2,880 1,750 1,120 4 1,020 1,220 2,600 3,660 4,700 4,940 2,730 6,690 6,260 2,910 1,660 1,050 5 1,020 1,170 2,460 3,430 4,460 4,660 2,630 6,820 6,840 2,900 1,570 1,030 6 1,000 1,120 2,950 3,310 4,300 4,270 2,560 7,060 8.640 2,940 1,590 1,030 7 968 1,080 5,820 3,270 4,150 3,970 2,530 7,430 6,286 3,010 1,600 1,100 8 986 *1,040 6,580 3,250 4,400 3,750 2,580 8,810 6,820 3,040 1,670 1,170 9 944 1,010 6,230 3,240 4,960 3,520 2,630 10,000 6,320 2,740 1,670 1,190 10 *917 1,026 5,360 374lO" 5,980 3,300 2,940 10,400 6,040 2,610 1,680 1,190 11 900 1,520 4,750 3,680 5,810 3,110 3,310 10,700 5,790 2,530 1,690 1,170 12 895 2,220 4,370 4,060 5,810 2,980 3,510 9,000 5,500 2,510 1,680 1,060 13 950 4,500 3,940 4,360 6,670 2,840 3,980 7,080 5,130 2,400 1,570 986 14 1,220 4,680 3,690 4,440 6,750 2,710 4,540 *6,260 5,020 2,280 1,480 1,020 15 1,120 3,660 3,390 6,640 6,230 2,640 4,780 6,280 5,180 2,210 1,470 1,250 16 998 3,150 3,150 9,120 6,300 2,540 5,370 7,510 5,180 2,180 1,460 1,180 17 980 2,700 3,160 11,900 6,390 2,490 6,320 9,240 5,570 2,210 1,410 *1,290 18 962 2,390 3,350 11,500 *8,030 2,410 8,080 10,500 *5,760 2,270 1,390 1,300 19 917 2,260 3,770 9,100 9,220 2,330 7,830 11,900 5,700 2,310 1,360 1,290 20 878 2,060 5,890 7,340 8,520 *2,300 17,300 12,200 5,640 2,200 1,360 1,500 21 851 1,880 5,960 6,200 7,680 2,450 18,900 12,100 5,550 2,070 1,390 1,270 22 SBT 1,770 5,370 *5,420 7,570 2,610 14,660 13,500 5,310 2,040 1,410 1,240 23 1,290 1,710 4,720 5,080 8,640 2,610 11 , 600 14.400 5,080 2,020 1,440 1,140 24 1,810 1,700 4,620 6,400 11,200 2,950 9,370 13,600 4,890 1,960 1,450 1,080 25 1,780 1,700 5,480 6,400 14.600 3,180 7,810 13,700 4,730 1,930 1,450 1,110 26 1.920 1,770 10.000 5,840 12,200 3,180 6,750 13,600 3,970 1,880 1,460 1,170 27 1,676 1,710 6,966 5,390 9,700 3,100 6,010 13,800 3,900 1,930 1,390 1,080 28 1,480 1,740 7,700 5,960 7,920 3,040 5,470 11,900 3,760 1,980 1,330 1,060 29 1,340 1,630 7,060 6,480 - 2,990 5,150 9,570 3,430 2,000 1,320 1,050 30 1,480 1,630 6,210 6, 580 2,990 5,150 7,940 3>220 1,950 1,566 1,010 31 1,840 5,420 6,260 2, 880 7 , 680 1,830 1,320 Total 36,297 58,460 150,670 174,920 198,350 104,940 183,190 297,890 168,780 73,700 47,020 34,706 Mean 1,171 1,949 4,860 5,643 7,084 3,385 6,106 9,609 5,626 2,377 1,517 1,157 Cfsm 1.12 1.87 4.66 5.42 6.80 3.25 5.86 9.22 5.40 2.28 1.46 1.11 In. 1.30 2.09 5.38 6.24 7.08 3.75 6.54 10.63 6.02 2.63 1.68 1.24 Ac-ft 71,990 116,000 298,800 346,900 393,400 208,100 363,400 590,900 334,800 146,200 93,260 68,840 Calendar year 1957: Max 19,200 Kin 851 Mean 3,911 Cfsm 3.75 In. 50.97 Ac-ft 2,832,000 Water year 1957-58: Max 18,900 Min 851 Mean 4,189 Cfsra 4.02 In. 54.58 Ac-ft 3,033,000 Peak discharge (base, 16,000 cfs). Apr. 20 (8 to 12 p.m.) 20,500 cfs (13.00 ft). * Discharge measurement made on this day. COWLITZ RIVER BASIN 193

2350. Cowlitz River at Mossyrock, Wash.

Location. Lat 46°33'00", long 122°29'30", in SE£ sec. 1, T. 12 N., R. 2 E., on left bank 200 ft upstream from Harmony Bridge and 1? miles north of Mossyrock. Drainage area.--1,170 sq mi, approximately. Records available.--January to April 1912, November 1912 to June 1913 (fragmentary), Octo- Ber 1913 to September 1917, March 1926 to September 1935, August 1946 to September 1958. Estimated means October to December 1912 and July to September 1913, published in State Water-Supply Bulletin 5, have been found to be unreliable and should not be used. Gage. Water-stage recorder. Datum of gage is 357.31 ft above mean sea level (levels by "city of Tacoma). Jan. 1, 1912, to Sept. 30, 1917, and Mar. 12, 1926, to Sept. 30, 1935, staff, chain, or wire-weight gages within 200 ft of present site at different daturas. Average discharge. 26 years (1912-17, 1926-35, 1946-58), 5,384 cfs (3,898,000 acre-ft per year). Extremes. Maximum discharge during year, 22,600 cfs Apr. 21 (gage height, 15.18 ft); minimum, 894 cfs Oct. 20-23 (gage height, 3.56 ft). 1912-17, 1926-35, 1946-58: Maximum discharge, 83,500 cfs Dec. 23, 1933 (gage height, 37.53 ft, average of high-water marks, site and datum then in use), from rating curve extended above 20,000 cfs; minimum, 543 cfs Nov. 30, 1952 (gage height, 3.06 ft). Maximum stage known since 1906, that of Dec. 23, 1933. Flood in November 1906 reached a stage of 29.4 ft, datum in use 1913-34 (discharge, 61,300 cfs). Remarks. Records excellent except those for periods of no gage-height record, which are good. Minor diversions for domestic and farm use above station. No regulation. Revisions (water years).--WSP 769: 1933. WSP 1318: 1913 (annual figures). WSP 1398: 1914(M), 1916-1?(M), 1927-28(M), 1930-32(M), 1934-35(M), 1949. See also Records available.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, in cubic feet per second) Oct. 1 to Apr. 21 Apr. 22 to Sept. 30

3.5 840 8.0 7,680 3.7 970 8.0 7,680 4.0 1,320 11.0 13,800 4.2 1,470 11.0 13,800 5.0 2,520 15.0 22,200 5.0 2,470 15.0 22,200 6.0 4,000 6.0 4,000 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,050 1,790 2,600 5,670 6,700 7.900 3,230 5.970 7,920 5,410 *1.990 1,400 2 1,100 1,570 3,410 5,180 6,200 6,980 3,500 6,440 7,440 5,266 1,856 1,400 3 1,150 1,420 3,350 4,740 5,820 6,230 5,540 *6,940 7,040 3,140 1,850 1,250 4 *1,050 1,300 3,200 4,370 5,450 5,720 5,180 7,180 6,580 3,180 1,800 1,150 5 1,020 1,230 3,020 4,270 5,180 5,400 5,070 7,220 6,820 3,180 1,650 1,100 6 1,020 1,170 3,360 3,940 *4,980 5,050 2,980 7,480 8,620 5,180 1,650 1,050 7 993 1,130 6,180 3,840 4.860 4,710 2,940 7,780 8.780 5,250 1,650 1,166 8 984 1,070 7,080 3,840 4,970 4,470 2,970 8,860 7,280 3,340 1,700 1,150 9 948 1,030 6,980 5,820 5,400 4,210 5,050 10,200 6,580 3,060 1,700 1,200 10 921 1,020 6,040 3,890 6,480 3,950 5,560 10,600 6,290 2,870 1,720 *1,250 11 912 1,410 5,380 4,180 6,480 3,760 5,750 11,100 6,000 2,760 1,720 1,260 12 903 2,340 4,970 4,470 6,480 5,620 3,870 9,860 5,740 2,740 1,700 1,180 13 921 4,480 4,540 4,850 7,500 5,440 4,260 7,740 5,380 2,650 1,600 1,090 14 1,180 5,580 4,290 4,860 7,740 5,280 4,810 6,660 5,230 2,550 1,550 1,090 15 1,180 4,520 3,940 6,540 7,220 3,220 5,250 6,460 5,310 2,440 1,550 1,290 16 1,040 3,740 3,680 9,480 7,280 3,080 5,910 7,460 5,520 2,410 1,550 1,340 17 993 3,220 3,660 12,500 7,280 3,010 6,660 9,140 5,590 *2,410 1,500 1,370 18 975 2,860 3,860 15.100 8,500 2,950 8,840 10,600 *5,850 2,500 1,450 1,470 19 921 *2,720 *4,290 10^400 10,000 *2,810 8,480 11,900 5,800 2,540 1,456 1,390 20 903 2,460 6,310 8,480 9,380 2,790 16,600 12,700 5,760 2,460 1,450 1,680 21 894 2,230 6,760 7,180 8,520 2,880 21.700 12,500 5,680 2,320 1,450 1,440 22 594 2,060 6,290 6,250 8,240 5,070 17,800 15,800 5,490 2,250 1,450 1,390 23 1,040 1,970 5,560 5,760 9,160 5,080 14,000 14,800 5,510 2,240 1,500 1,290 24 1,830 1,910 5,360 7,060 11,200 5,400 11,200 14,500 5,110 2,190 1,500 1,220 25 1,950 1,900 6,020 7,280 15,600 5,650 9,300 14,100 5,090 2,120 1,550 1,170 26 2.090 1,990 10,400 6,580 13,900 5,680 7,980 14,100 4,570 2,080 1,550 1,290 27 1,890 1,970 10,600 6,080 11,200 5,580 7,000 14,500 4,210 2,110 1,500 1,180 28 1,630 2,020 9,040 6,560 9,160 5,500 6,270 12,600 4,140 2,160 1,500 1,150 29 1,460 1,890 8,340 7,220 - 5,470 5,830 10,500 3,820 2,190 1,500 1,150 30 1,500 1 , 890 7,320 7,480 5,460 5,650 8, 480 3^580 2,160 1,700 1,110 31 2,060 6,350 7,280 5 550 7,960 2.040 1 500 Total 37,402 65,690 172,180 196,910 220,880 125,680 206,560 309,330 176,110 81,170 49,780 37,600 Mean 1,207 2,190 5,554 6,552 7,889 3,990 6,885 9,978 5,870 2,618 1,606 1,253 Cfsm 1.03 1.87 4.75 5.45 6.74 3.41 5.88 8.53 5.02 2.24 1.37 1.07 In. 1.19 2.09 5.47 6.26 7.02 3.95 6.57 9.83 5.60 2.58 1.58 1.20 Ac-ft 74,190 130,300 341,500 390,600 438,100 245,300 409,700 613,500 349,300 161,000 98,740 74,580 Calendar year 1957= Max 19,800 Min 894 Mean 4,340 Cfsm 3.71 In. 50.33 Ac-ft 3,142,000 water year 1957-53: Max 21,700 Min 894 Mean 4,595 Cfsm 3.93 In. 53.32 Ac-ft 3,327,000

Peak discharge (base, 16,000 cfs).--Feb. 25 (12 m.) 16,100 cfs (12.10 ft)j Apr. 21 (3 a.m.) 22,600 cfs (15.18 ft). * Discharge measurement made on this day. Note. No gage-height record Oct. 1-4, Aug. 2 to Sept. lOj discharge estimated on basis of records for nearby stations. 194 COWLITZ RIVER BASIN

2355. West Pork Tilton River near Norton, Wash.

Location. Lat 46°36'45", long 122°14'45", in NE^ sec. 13, T. 13 N., R. 4 E., on left bank three-quarters of a mile upstream from mouth and 4 miles northeast of Morton. Drainage area. 16.4 sq mi. Records available. June 1950 to September 1958. Gage. Water-stage recorder. Altitude of gage is 1,150 ft (from topographic map). Average discharge.--8 years, 128 cfs (92,670 acre-ft per year). Extremes.--Maximum discharge during year, 2,210 cfs probably Dec. 25 (gage height, 5.46 ft, from high-water mark in gage well), from rating curve extended above 1,200 cfs as explained below; minimum, 5.2 cfs Aug. 25-27 (gage height, 1.57 ft). 1950-58: Maximum discharge, 6,620 cfs Dec. 11, 1955 (gage height, 7.55 ft, from high-water mark in gage well), from rating curve extended above 1,200 cfs on basis of slope-area measurement of peak flow; minimum, 4.7 cfs Oct. 29, 1952; minimum gage height, 0.87 ft Aug. 25, Sept. 20-24, 1951. Remarks. Records good except those for periods of doubtful or no gage-height record and those for period Aug. 1 to Sept. 15, which are fair. Logging company diverts small amount for sprinkling system. No regulation. Revisions (water years).~WSP 1348: 1953.

Rating tables, water year 1957-58, except period of doubtful gage-height record (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 25 Dec. 26 to Sept. 30 1.6 6.0 3.0 170 3.5 164 1.8 12.5 3.5 370 6.0 3.5 295 2.0 4.0 680 9.2 4.0 490 2.3 5.0 1,610 13.5 780 2.6 26 1,200 2.5 74 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 872^7.7 52 350 170 234 128 61 73 26 24"27 *7.8 7.2 2 43 450 150 196 TIT 60 68 23 7.5 6.9 3 9.2 37 250 130 171 96 56 64 22 21 7.8 6.6 4 8.5 33 150 120 160"151 84 52 60 19.5 20 7.8 6.6 5 12 30 200 110 93 50 58 18.5 19 7.2 6.0 6 10.5 27 450 110 153 80 48 54 30 18 7.2 5.7 7 16.5 24 700 110 151 75 49 53 26 17 7.2 5.5 8 14.5 *23 400 120 171 69 53 52 22 16 7.2 BT5 9 12.5 21 250 130 290 65 69 49 21 14.5 6.9 7.2 10 *10.5 3T 200 150 390 61 164 48 20 14 6.9 6.6 11 9.5 227 150 200 244 60 124 45 21 13 6.6 6.3 12 9.9 674 130 300 300 57 104 39 21 12.5 6.6 6.0 13 14 870 120 250 286"409 53 96 35 19.5 12 6.6 5.7 14 19 550 120 350 50 101 *33 18.5 11.5 6.3 7.8 15 15 306 100 *780 280 49 333 31 17.5 11 6.0 14 16 12 179 150"90 510 332 48 372 32 16 10.5 6.0 *13.5 17 19 127 476 310 BT 534 32 15.5 10 6.0 24 18 16 100 200 280 *319 57 307 31 15 10 6.0 14.5 19 13 88 600 198 258 61 762 31 14.5 10 6.0 T5"31 20 11 76 750 146 190 *74 69T 28 14.5 10 5.7 21 14 65 500 »120 160 108 450 27 13.5 9.6 5.5 19 22 73 56 350 101 203 109 301 26 13 9.6 5.5 17.5 23 145 52 250 149 213 99 216 28 12.5 9.2 5.5 15.5 24 110 52 400 432 242 128 162 26 24 8.8 5.5 13.5 25 97 55 700 301 269 115 132 26 20 8.5 5.5 17 26 99 53 1,000 229 244 102 111 22 24 8.2 5.2 14 27 74 52 450 198 193 91 94 21 29 8.2 BTT 12.5 28 56 80 450 388 153 82 85 22 32 7.8 6.6 11 29 45 70 350 332 75 80 20 28 778 8.8 10.5 30 79 80 250 313 70 75 20 28 T~B"9.2 10 31 62 200 289 62 26 Total 1,102.5 4,105 10,680 7,632 6,672 2,463 5,792 1,180 625.0 394.3 205.8 346.1 Mean 35.6 137 345 246 238 79.5 193 38.1 20.8 12.7 6.64 11.5 Cfsm 2.17 8.35 21.0 15.0 14.5 4.85 11.8 2.32 1.27 0.774 0.405 0.701 In. 2.50 9.31 24.22 17.31 15.13 5.59 13.13 2.68 1.42 0.89 0.47 0.78 Ac-ft 2,190 8,140 21,180 15,140 13,230 4,890 11,490 2,340 1,240 782 408 686 Calendar year 1957: Max 1,170 Mln 6.6 Mean 109 Cfsm 6.65 In. 90.21 Ac-ft 78,900 Water year 1957-58: Max 1,000 Mln 5.2 Mean 113 Cfsm 6.89 In. 93.43 Ac-ft 81,720 Peak discharge (base, 800 cfs).--Nov. 13 (6 a.m.) 1,120 cfs (4.53 ft); probably Dec. 25 (time unknown) 2,210 efs (5.46 ft); Apr. 19 (2:30 p.m.) 1,510 efs (5.11 ft).______* Discharge measurement made on this day. Note. Doubtful gage-height record Oct. 14-20j discharge estimated on basis of records for nearby stations and Aug. 1 to Sept. 15; discharge computed on basis of recorded gage heights. No gage- height record Nov. 24 to Jan. 15; discharge estimated on basis of records for nearby stations. COWLITZ RIVER BASIN 195

2362. Tilton River above Bear Canyon Creek, near Clnebar, Wash.

Location. Lat 46°35 I 40", long 122°28'05", in NE^SW^ sec. 20, T. 13 N., R. 3 E., on right bank 0.8 mile upstream from Bear Canyon Creek and 1 mile southeast of Cinebar. Drainage area. 141 sq mi. Records available. October 1956 to September 1958. Gage. Water-stage recorder. Altitude of gage is 600 ft (from topographic map). Extremes.--Maximum discharge during year, 5,610 cfs Apr. 19 (gage height, 8.13 ft); minimum, 58 cfs Aug. 25-27, Sept. 8, 9, 13 (gage height, 2.05 ft). 1956-58: Maximum discharge, 11,800 cfs Dec. 9, 1956 (gage height, 11.05 ft), from rating curve extended above 7,000 cfs; minimum, that of Aug. 25-27, Sept. 8, 9, 13, 1958. Remarks. Records good. Several small diversions for municipal and domestic use above station. No regulation.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 6 Dec. 7 to Sept. 3O 2.1 65 4.0 860 2.0 50 4.0 890 2.5 147 5.0 1,650 2.3 105 5.0 1,650 3.0 315 7.0 3,900 2.6 194 6.0 2,650 3.5 555 3.0 350 8.0 5,400 3.5 590 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 73 284 1,420 1,200 1,860 1.090 528 681 264 268 79 72 2 *79 244 1,910 1,070 1,600 567 543 S4C 223 24T 76 70 3 87 209 1,450 953 1,420 864 513 601 208 216 85 67 4 81 184 1,090 858 1,250 783 478 559 191 194 85 *64 5 87 167 888 795 1,180 819 454 *528 174 181 79 62 6 94 153 2,200 807 1,140 753 426 498 277 164 76 60 7 111 142 2,750 813 *1,060 729 408 474 298 155 74 59 8 120 132 2,310 858 1,100 681 H? 450 230 146 74 58 9 102 124 1,650 911 1,420 640 450 431 212 143 72 13 10 89 122 1,260 1,010 2,290 606 920 412 216 137 70 62 11 81 1,020 1,050 1,420 1,590 569 825 399 216 131 69 60 12 78 1,910 897 1,630 1,840 538 729 372 212 126 67 59 13 138 5.120 777 1,400 5.010 513 675 346 205 121 65 59 14 150 2,380 789 1,630 2,350 488 663 321 194 118 65 102 15 115 1,720 693 5.760 2,060 478 1,220 304 184 113 65 137 16 100 1,170 640 2,920 2,360 464 2,500 296 171 *108 64 105 17 148 846 *S5T 3,100 2,070 153 2,570 288 *161 105 64 187 18 127 *712 890 2,110 1,990 *523 2,210 276 152 101 64 144 19 109 706 2,820 1,600 1,670 528 2,810 268 146 101 64 T53~225 20 100 594 3,270 1,320 1,370 548 4.770 253 143 101 62 21 92 516 2,660 1,160 1,180 729 3,580 245 137 98 60 158 22 176 465 1,980 1,020 1,310 801 2,840 234 131 96 59 155 23 599 420 1,610 1,020 1,430 741 2,140 238 126 94 59 137 24 455 391 2,250 2,490 1,490 932 1,690 238 T5T 90 59 121 25 391 386 3,220 2,040 1,680 890 1,380 241 240 87 59 123 26 396 415 3,800 1,630 1,700 851 1,180 216 187 83 58 115 27 335 378 2,500 1,450 1,450 753 1,020 208 261 83 Iff 103 28 272 445 2,610 2,170 1,230 675 897 219 321 81 65 96 29 226 391 2,340 2,140 623 801 201 285 11 93 92 30 368 495 1,790 2,110 590 729 194 284 79 ~79"110 87 31 360 1,440 2,190 538 gg j 79 Total 5,749 20,241 55,635 49,585 46,100 21,187 40,361 10,854 6,241 3,919 2,180 3,092 Mean 185 675 1,795 1,600 1,646 683 1,345 350 208 126 70.3 103 Cfsm 1.31 4.79 12.7 11.3 11.7 4.84 9.54 2.48 1.48 0.894 0.499 0.730 In. 1.52 5.34 14.67 13.08 12.16 5.59 10.65 2.86 1.65 1.03 0.57 0.82 Ac-ft 11,400 40,150 110,400 98,350 91,440 42,020 80,050 21,530 12,380 7,770 4,320 6,130 Calendar year 1957: Max 5,970 Hin 68 Mean 693 Cfsm 4.91 In. 66.67 Ac-ft 501,500 Water year 1957-58= Max 4,770 Hin 53 Mean 726 Cfsm 5.15 ' In. 69.94 Ao-ft 525,900 Peak discharge (base, 6,200 cfs). No peak above base. * Discharge measurement made on this day. 196 COWLITZ RIVER BASIN

2364. Cinnabar Creek near Cinebar, Wash.

Location. Lat 46°36'20", long 122°30'30", in SW^SW^- sec. 13, T. 13 N., R. 2 E., on left bank 1 mile east of Cinebar and 2 miles upstream from mouth. Drainage area. 4.79 sq mi. Records available. October 1956 to September 1958. Sage. Water-stage recorder. Altitude of gage is 940 ft (from topographic map). Extremes. Maximum discharge during year, 135 cfs Dee. 19, Apr. 20 (gage height, 2.04 ft); minimum, 3.1 cfs Aug. 25-27 (gage height, 0.83 ft). 1956-58: Maximum discharge, 313 efs Dec. 9, 1956 (gage height, 2.69 ft); minimum, that of Aug. 25-27, 1958. Remarks. Records good except those for periods of no gage-height record, which are fair. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Oct. 1-31) Oct. 1 to June 6 June 7 to Sept. 30 0.7 3.2 0.8 2.5 .9 8.1 .9 4.6 1.2 26 1.0 7.8 1.5 54 1.2 17.5 2.0 133 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 3.6 15.5 48 27 53 38 23 23 15 16 5.6 4.4 2 *5TO 13.5 67 25 51 34 21 21 13 T5 5.2 3.8 3 4.5 12 52 22 46 31 19.5 18 11 13 5.9 470 4 4.1 10 41 24 40 28 19 18 9.7 11 5.2 * .0 5 4.5 9.3 34 25 *38 28 18 *17 8.4 11 4.9 .0 6 4.5 8.8 74 25 35 25 17 17 17 10.5 4.9 .0 7 6.9 7.8 70 24 32 25 16.5 16 11.5 10 4.9 .0 8 5.2 7.5 60 25 3138" 25 17 16 9.5 9.9 4.6 .0 9 4.5 7.2 51 27 24 17 15 9.5 9.5 4.6 .2 10 4.3 976 42 28 53 24 28 14.5 9.5 9.1 4.4 .2 11 3.9 41 35 34 47 22 25 14 9.5 8.6 4.2 .2 12 4.3 59 31 31 48 ZZ 24 13.5 9.1 8.2 4.4 .0 13 12.5 94 28 35 88 20 22 13 8.6 7.8 4.2 .2 14 7.2 84 27 44 60 19.5 24 12.5 8.2 7.5 4.2 12.5 15 5.8 63 24 79 47 20 42 12 7.8 7.2 4.2 9.1 16 5.8 47 23 68 48 19.5 66 12 7.5 *6.8 4.0 7.9 17 10.5 38 *2T 74 47 22 60 12.5 *7.5 6.8 3.8 8.6 18 7.8 *32 28 53 48 *25 54 12 7 6.5 3.8 6.8 19 6.9 28 83 47 43 25 59 11.5 6.5 6.5 3.8 ~97S15.5 20 6.9 26 82 42 38 27 120 11 6.5 6.5 3.6 21 6.6 24 63 38 33 32 114 10.5 6 6.2 3.6 8.2 22 22 22 47 37 38 32 82 10 5~5~5.5 5.9 3.6 7.2 23 2T 20 38 40 42 31 58 10.5 579 3.6 6.8 24 16.5 19 66 64 44 35 48 10 9 5.9 3.3 6.2 25 15 19 94 57 46 33 41 9.5 14 5.9 5.1 6.5 26 14 19 104 52 47 34 35 9 9.9 5.9 3.1 5.6 27 12 19 TT 47 47 31 32 9 11 5.9 3.8 5.9 28 10.5 21 74 51 44 28 28 10.5 17 5.9 3.6 5.2 29 9.3 19.5 63 48 - 25 26 9 16 5.9 6.2 5.2 30 21 25 44 51 23 25 12 15 472 4.6 31 18 34 59 22 15.5 5 9 Total 285.6 820.7 1,614 1,303 1,272 830.0 1,181.0 415.0 301.2 252.6 132.3 184.3 Mean 9.21 27.4 52.1 42.0 45.4 26.8 39.4 13.4 10.0 8.15 4.27 6.14 Cfsm 1.92 5.72 10.9 8.77 9.48 5.59 8.23 2.80 2.09 1.70 0.891 1.28 In. 2.22 6.37 12.53 10.12 9.88 6.44 9.17 3.22 2.34 1.96 1.03 1.43 Ac-ft 566 1,630 3,200 2,580 2,520 1,650 2,340 823 597 501 262 366 Calendar year 1957: Max 177 Mln 3.6 Mean 26.8 Cfsm 5.59 In. 75.94 Ac-ft 19, 400 Water year 1957-58: Max 120 Mln 3.1 Mean 23.5 Cfsm 4.91 In. 66.71 Ac-ft 17,040 Peak discharge (base, 220 cfs). No peak above base. * Discharge measurement made on this day. _Note. No gage-height record Apr. 24-26, May 7-11, 18-29, June 18-24, 27-29, July 2-7; discharge estimated on basis of records for nearby stations. COWLITZ RIVER BASIN 197

2365. Tilton River near Cinebar, Wash.

Location. Lat 46°34'35", long 122°31'15", in SW^r sec. 26, T. 13 N., R. 2 E., on left bank 1,000 ft downstream from Cinnabar Creek, 2 miles southeast of Cinebar, and 2 J miles upstream from mouth. Drainage area. 158 sq mi. Records available.--February 1941 to March 1958 (discontinued). Gage. Water-stage recorder. Datum of gage is 397.6 ft above mean sea level (river- profile survey). Prior to Apr. 18, 1941, staff gage at same site and datum. Average discharge. 16 years, 927 cfs (671,100 acre-ft per year). Extremes. Maximum discharge during period October to March, 5,500 cfs Dec. 19 (gage height, 9.72 ft); minimum, 78 cfs Oct. 1, 2 (gage height, 4.00 ft). 1941-58: Maximum discharge, 23,200 cfs Dec. 11, 1955 (gage height, 15.13 ft), from rating curve extended above 9,200 cfs; minimum, 60 cfs Sept. 21-24, 1951 (gage height, 3.54 ft). Remarks. Records fair. Several small diversions for municipal and domestic use above station. No regulation. Revisions (water years). WSP 1348: 1946-47.

Rating table, Oct. 1, 1957, to Mar. 31, 1958 (gage height, in feet, and discharge, in cubic feet per second) (Shifting-control method used Nov. 13 to Dec. 5, Jan. 21 to Mar. 11)

4.0 6.0 780 4.5 165 7.0 1,600 5.0 310 6.0 2,750 5.5 500 10.0 6,050 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 78 373 1,560 1,640 2,120 1,450 2 *85 324 2,240 1,470 1,890 1,280 3 95 289 1,830 1,300 ,730 1,130 4, 92 260 1,430 1,170 ,550 1,010 5 95 242 1,140 1,060 ,440 1,010 6 113 224 2,400 1,010 ,340 927 7 128 210 3,150 998 * ,210 906 8 151 198 2,750 1,010 ,170 857 9 126 190 2,010 1,060 ,410 815 10 110 182 1,530 1,170 ,370 762 11 105 1,070 1,230 1,620 ,700 702 12 95 2,060 1,050 1,880 ,790 648 13 169 5,610 892 1,640 ,180 606 14 196 2,830 885 1,830 ,580 575 15 149 2,050 774 4,250 ,210 570 16 130 1,450 720 3,490 ,560 555 17 180 1,130 756 3,700 ,310 585 18 170 927 976 2,660 ,240 *a620 19 149 878 *2,790 2,050 ,950 a640 20 137 714 3,670 1,730 ,680 a670 21 128 636 3,090 1,530 ,460 aSOO 22 202 580 2,520 1,350 ,600 a960 23 632 *530 2,150 1,350 ,750 a900 24 510 492 2,750 2,970 ,800 al,100 25 436 492 3,680 2,490 ,980 al,050 26 452 515 4,560 2,020 ,040 al.OOO 27 396 476 3,190 1,820 ,870 a900 28 345 550 3,250 2,410 ,640 a800 29 296 492 2,960 2,370 - a750 30 437 580 2,360 2,330 a700 31 440 1,940 2,440 a650 Total 6,827 24,554 66,233 59,798 52,570 25,928 Mean 220 818 2,137 1,929 1,878 836 Cfsra 1.39 5.18 13.5 12.2 11.9 5.29 In. 1.61 5.78 15.59 14.08 12.37 6.10 Ac-ft 13,540 48,700 131,400 118,600 104,300 51,430 Calendar year 1957: Max 6,050 Mln 74 Mean 814 Cfsra 5.15 In. 69.96 Ac-ft 589,500 Water year 1957-58: Max - Hin - Mean - Cfsra - In. - Ac-ft -

Peak discharge (base, 7,000 cfs). No peak above base. * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of 1 discharge measurer! nt and record for station above Bear Canyon Creek, near Cinebar. 198 COWLITZ RIVER BASIN

2370. Klickitat Creek at Mossyrock, Wash.

Location. Lat 46°31'15", long 122°28'05", on line between sees. 17 and 18, T. 12 N., R- 3 E., near left bank at upstream side of highway bridge, 1 mile southeast of Mossy- rock and 4-J miles upstream from mouth. Drainage area. 3.45 sq mi. Records available . August 1948 to September 1958. Gage. water-stage recorder. Datum of gage is 668.41 ft above mean sea level (levels by city of Tacoma). Average discharge.--10 years, 9.60 cfs (6,950 acre-ft per year). Extremes. Maximum discharge during year, 45 cfs Dec. 25 (gage height, 2.59 ft); no flow for many days in October, July to September. 1948-58: Maximum discharge, 165 cfs Feb. 17, 1949 (gage height, 3.62 ft), from rating curve extended above 42 cfs; no flow for long periods in most years. Remarks. Records good. No regulation or diversion above station. Revisions (water years).--WSP 1288: Drainage area. Revised figures of discharge, in cubic feet per second, for the water year 1957, superseding those published in WSP 1518, are given herewith: 1957 May 21...... 7.4 22...... 15.5 23...... 6.8 June 12...... 3.6

Per Runoff Month Cfs-days Maximum Minimum Mean square mile Inches Acre-feet May 1957 ...... 146.6 15.5 1.0 4.73 1.37 1.58 291 89.6 17 .4 2.99 .867 .97 178 Water year 1956-57 ...... 3,287.3 55 0 9.01 2.61 35.44 6,520 Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Apr. 21 Apr. 21 to Sept. 3O 0.9 1.7 0.4 1.0 1.2 8.2 .6 .4 2.1 2.2 1.6 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 0 0.7 16.5 19.5 28 19.5 4.8 13 4.0 ~1.3 0 0 2 0 .6 10 18.5 26 18.5 4.5 12 2. '4 0 0 3 0 .5 6.6 16.5 25 16.5 3.9 11 2.4 1.1 0 0 4 O .4 5.0 15 23 15.5 3.7 10 1.5 .7 0 *0 5 0 .4 4.8 14 *22 18 3.4 9.0 1.1 .8 0 0 6 0 .4 19.5 13 21 15 2.9 *8.6 13 .4 0 7 0 .3 14.5 12 19 15.5 UL 7.8 5.4 .4 0 8 .1 .3 10.5 12 19 14 3.2 6.8 2.2 .4 0 9 .1 .3 8.5 14 20 12 4.7 6.0 1.8 .4 0 10 0 .4 6.6 13 19 10.5 9.2 5.8 1.8 .4 0 11 0 2.2 6.0 13 25~17.5 9.3 4.8 5.3 2.0 .3 0 r 12 0 8.7 5.5 12.5 8.5 3.4 4.6 1.7 .3 0 13 .6 17 5.0 10.5 25 7.4 5.6 4.2 1.4 .2 0 .3 14 .1 ~818 5.8 22 22 6.3 7.4 3.4 1.3 .2 0 .3 15 0 4.5 19.5 24 8.8 17 3.1 1.1 *.2 O .2 16 0 6.5 4.3 28 24 8.2 23 2.8 *.9 .1 0 .2 17 0 5 6.6 23 24 10.5 25 2.5 .7 .1 0 .2 18 0 4 *9.6 20 22 *8.5 20 2.2 .5 .1 0 .2 19 0 *4.5 16.5 19 20 7.4 26 2.5 .5 .2 0 .3 20 0 2.2 15 21 19 6.8 29 2.1 .5 .2 0 .2 21 .1 1.6 19.5 19.5 18.5 7.7 32 1.8 .4 .2 0 .1 22 .4 1.4 18.5 18 26 6.3 31 1.6 .4 .1 0 23 1.4 1.3 14.5 26 21 6.7 27 1.8 .4 .1 0 24 .6 1.3 18.5 29 24 11 26 2.0 2.8 .1 0 25 .9 1.6 27 24 26 8.2 24 2.0 2.0 .1 0 > 0 26 .8 2.0 34 22 25 6.8 22 1.4 1.1 .1 0 27 .5 2.4 28 25 24 5.8 19 1.4 2.4 0 0 28 .4 5.3 29 28 21 5.5 17 2.1 2.7 0 0 29 .4 2.2 26 30 - 5.5 15 1.9 1.5 0 0 30 2.4 5 .8 23 35 5.0 14 2.2 1.5 0 .1 31 1.2 22 32 4^8 4.0 0 0 Total 10.0 105.3 441.1 624.5 630.0 310.0 431.2 144.9 61.4 9.4 0.1 2.0 Mean 0.32 3.51 14.2 20.1 22.5 10.0 14.4 4.67 2.05 0.30 0.003 0.07 Cfsm 0.093 1.02 4.12 5.83 6.52 2.90 4.17 1.35 0.594 0.087 0.00087 0.020 In. 0.11 1.14 4.75 6.73 6.79 3.34 4.65 1.56 0.66 0.10 o.ooi 0.02 Ac-ft 20 209 875 1,240 1,250 615 855 287 122 19 0.2 4.0 Calendar year 1957: Max 55 Mln 0 Mean 7.57 Cfsm 2.19 In. 29.80 Ac-ft 5,490 Water year 1957-58: Max 35 Mln 0 Mean 7.59 Cfsm 2.20 In. 29.851 Ac-ft 5,500 Peak discharge (base, 60 cfs). No peak above base. * Discharge measurement or observation of no flow made on this day. Note. No gage-height record Nov. 15-19, Sept. 7-30; discharge estimated on basis of 1 discharge measurement, weather records, and records for nearby stations. COWLITZ RIVER BASIN 199

2375. Winston Creek near Mayfield, Wash.

Location. Lat 46°29'00", long 122 031'15", about center of sec. 35, T. 12 N., R. 2 E., on left bank 100 ft downstream from bridge, 3 miles southeast of Mayfield, and 3^ miles upstream from mouth. Drainage area. 40.0 sq mi. Records available.--October 1949 to September 1958. Gage. Water-stage recorder. Altitude of gage is 470 ft (from topographic map). Average discharge. 9 years, 119 cfs (86,150 acre-ft per year). Extremes.--Maximum discharge during year, 795 cfs Dec. 25 (gage height, 5.80 ft); minimum, 1.4 cfs Aug. 26; minimum gage height recorded, 2.23 ft Oct. 1, Aug. 3. 1949-58: Maximum discharge, 3,510 cfs Dec. 9, 1953 (gage height, 8.58 ft), from rating curve extended above 550 cfs; minimum, 0.6 cfs Aug. 24, 1951 (gage height, 1.63 ft). Remarks. Records good except those for period Aug. 4 to Sept. 30, which are fair, Slight regulation by Long Bell Lumber Co. for millpond. No diversion.

Rating table, water year 1957-58, except period of doubtful gage-height record Sept. 7-9, 12 (gage height, in feet, and discharge, In cubic feet per second) (Shifting-control method used Aug. 4 to Sept. 6, Sept. 10-11, 13-30) 1.92 1.4 3.0 54 2.1 3.6 3.5 135 2.4 9.3 5.0 512 2.7 26 6.0 878 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 5.9 20 218 228 486 235 75 111 42 28 6.9 5.0 2 1T75- 16.5 228 201 354 201 74 1OO 31 22 6.5 4.4 3 14 15 169 169 315 171 71 *91 38 19 6.5 3.8 4 9.0 13.5 139 146 248 154 67 82 28 23 6.6 3.8 5 12 12.5 119 131 *206 156 64 76 23 35 5.7 *2.8 6 13 12 234 115 171 135 60 72 106 22 3.8 2.0 7 17.5 12 268 106 154 129 58 67 74 19 4.0 2.7 8 15 11.5 228 106 143 119 62"57 62 47 18 5.4 2.6 9 12 11 190 109 139 106 58 38 18 3.8 2.5 10 9.0 IT. 5 160 109 190 98 91 54 40 16.5 2.7 2.4 11 8.0 57 141 117 152 91 75 52 41 15.5 2.9 2.6 12 7.8 90 123 123 225 85 67 48 39 13.5 3.3 2.8 13 17.5 176 106 119 345 80 70 45 36 12.5 3.7 3.8 14 20 218 111 133 300 77 90 41 32 12 4.0 16.5 15 12 I3T 93 250 290 75 160 38 30 *11 4.4 23 16 10 98 86 271 386 74 405 37 *27 10 4.1 25 17 11 77 107 452 342 80 433 35 24 9.6 4.2 57 18 10 70 *163 355 305 80 384 33 21 10 4.0 30 19 8.8 76 290 290 255 *75 427 32 20 10.5 3.3 64 2O 8.3 *62 358 252 213 75 573 30 21 10.5 3.3 60 21 8.0 54 379 223 187 82 630 28 19 10.5 2.4 38 22 9.7 51 335 187 235 83 682 26 17.5 10 O"1.9 56 23 29 46 292 198 223 77 55T 27 2T~15.5 9.3 44 24 18.5 43 363 551 230 119 447 26 8.8 2.6 33 25 17.5 44 523 418 315 107 353 26 36 8.0 1.9 35 26 18 54 686 330 366 104 278 22 26 7.8 2.0 32 27 14.5 47 492 295 328 96 220 2? 36 7.3 3.0 24 28 12 74 503 399 275 90 180 26 33 7.1 5.2 21 29 11.5 60 420 423 - 86 150 25 34 6.9 14 21 30 30 66 340 500 85 129 22 35 7.1 ~~S"22 i 20 31 25 275 59j^ 77 36 7.1 O . / Total 430.0 1,735.5 8,139 7,905 7,418 3,302 6,983 1,450 1,035.0 425.5 153.0 640.7 Mean 13.9 57.8 263 255 265 107 233 46.8 34.5 13.7 4.94 21.4 Cfsm 0.348 1.44 6.58 6.38 6.62 2.68 5.82 1.17 0.862 0.342 0.124 0.535 In. 0.40 1.61 7.57 7.35 6.90 3.07 6.49 1.35 0.96 0.40 0.14 0.60 Ac-ft 853 3,440 16,140 15,680 14,710 6,550 13,850 2,880 2,050 844 303 1,270 Calendar year 1957: Max 686 Min 4.4 Mean 91.3 Cfsm 2.28 In. 30.99 Ac-ft 66,130 Water year 1957-58: Max 686 Min 1.9 Mean 109 Cfsm 2.72 In. 36.84 Ac-ft 78,570 Peak discharge (base,900 cfs). No peak above base. Discharge measurement made on this day. 200 COWLITZ RIVER BASIN

2380. Cowlltz River near Mayfield, Wash.

Location. La t 46°30'40", long 122°36i50", in NEir sec. 24, T. 12 N., R. IE., on right bank I mile upstream from Mill Creek, 2 miles downstream from Winston Creek, and 2i miles west of Mayfield. Drainage area.--1,400 sq mi. Records available. August to October 1910, December 1910 to September 1911, October to November 1911 (monthly discharge only in WSP 492), April 1934 to September 1958. Pub lished as "at Mayfield" 1910-11. Ga,Page --Water-stage recorder. Datum of gage is 226.6 ft above mean sea level, datum of l!929. August 1910 to November 1911 staff gage at site 2f miles upstream at different datum. Apr. 27 to June 30, 1934, staff gage at present site and datum. Average discharge. 24 years (1934-58), 6,076 cfs (4,399,000 acre-ft per year). Extremes --Maximum discharge during year, 26,500 cfs Apr. 21 (gage height, 17.36 ft, from high-water mark in well); minimum, 1,030 cfs Oct. 12 (gage height, 8.26 ft). 1910-11, 1934-58: Maximum discharge, 58,000 cfs Dec. 13, 1946 (gage height, 24.75ft); minimum, 698 cfs Nov. 30, 1952; minimum gage height, 7.18 ft Nov. 30, Dec. 1, 1936. Flood in December 1933 is known to have exceeded that of Dec. 13, 1946. Remarks.--Records excellent except those for period of shifting control, which are good. Minor diversions for domestic and farm use above station. No regulation. Revisions (water years).--WSP 1318: 1949(M). WSP 1348: Drainage area.

Rating table, water year 1957-58, except period of shifting control (gage height, in feet, and discharge, in cubic feet per second) 8.2 980 12.0 8,280 9.0 1,930 15.0 17,400 10.0 3,580 18.0 29,400 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. i 1,170 2,280 4,180 7,530 9,610 9,530 3,930 w 8,230 5.750 *1.960 1,460 Z 1,260 2,000 5,750 6,840 8,750 8,360 3,950 7,710 3,560 1,900 1,450 3 1,310 1,820 5,050 6,160 7,980 7,480 3,970 7,770 7,350 3,390 1,920 1,300 4 *1,220 1,690 4,510 5,610 7,320 6,840 3,790 8,010 6,840 3,390 1,870 1,210 5 1,210 1,580 4.070 5,190 6,860 6,560 3,660 8,010 7,010 3,430 1,720 1,150 6 1,220 1,510 5,710 4,990 *6,540 6,090 3,540 8,230 8,830 3,300 1,710 1,110 7 1,220 1,460 9,670 4,880 6.240 5,710 5.450 8,420 9. 510 3,370 1,710 1,150 8 1,220 1,390 10 , 100 4,900 6,380 5,380 3,480 9,310 7,610 3,450 1,780 1,210 9 1,170 1,350 9,310 4,960 6,990 5,010 3,600 10, 500 6,940 3,210 1,800 *1,290 10 1,090 1.510 7,820 5,100 9,450 4,720 4,360 10, 800 6,580 3,050 1,790 1,290 11 1,060 2,560 6,740 5,870 8,690 4,460 4,700 11,200 6,360 2,910 1,790 1,290 12 1,050 4,320 6,090 6,460 8,830 4,250 4,700 10,300 6,110 2,860 1,800 1,210 13 1,180 8,170 5,490 6,710 11,300 4,030 5,010 8,330 5,710 2,780 1,720 1,110 14 1,430 8.650 5,170 6,780 11,000 3,850 5,660 7,220 5,490 2,640 1,630 1,180 15 1,420 6,810 4,770 10, 900 10, 000 3,770 6,760 6,940 5,590 2,550 1,600 1,390 16 1,260 5,190 4,420 13,000 10,500 3,660 9,280 7,820 5,590 2,470 1,630 1,450 17 1,280 4,250 4,400 15, 500 10, 100 3,620 9,980 9,420 5,970 2,470 1,610 1,520 18 1,260 3,690 4,940 15, 200 11,100 3,600 11,600 10,800 *6,210 2,510 1,530 1,630 19 1,170 3,520 7,410 12,500 12,000 3,500 11,500 12,300 6,190 *2,560 1.510 1,600 20 1,100 *3,160 10,700 10, 500 11,300 5.450 20,400 13,300 6,090 2,500 1,510 1,860 21 1,060 2,860 10,500 9,110 10,200 3,730 25.100 13,000 6,040 2,530 1,520 1,630 22 1,140 2,660 *9,280 7,930 10,100 3,970 20, 500 14,100 5,750 2,280 1,540 1,540 23 1,850 2,550 7,930 7,300 11,000 3,930 16,300 14.900 5,490 2,260 1,570 1,450 24 2,420 2,470 8,360 10,500 12,500 4,460 13,300 14,700 5,380 2,190 1,580 1,350 25 2,450 2,450 10,300 10, 400 16.600 4,680 11,300 14,400 5,560 2,140 1,610 1,280 26 2,580 2,530 15, 200 9,170 15,400 4,700 9,840 14,400 4,680 2,120 1,610 1,370 27 2,390 2,500 14,000 8,330 13,000 4,510 8,580 14,300 4,570 2,120 1,600 1,290 28 2,080 2,660 12,700 9,560 10, 900 4,340 7,660 12,800 4,630 2,160 1,540 1,220 29 1,860 2,510 11,800 10,200 - 4,190 7,060 10, 600 4,190 2,190 1,540 1,200 30 2,010 2,550 10, 100 10, 600 4,170 6,760 8,630 3,930 2,200 1,780 1,180 31 2,530 8,630 10,700 4,010 8,170 2j_070 1,540 Total 46,650 92,430 245,100 263,380 280,640 150,560 253,720 323,020 185,940 84,410 51,920 40,370 Mean 1,505 3,081 7,906 8,496 10,020 4,857 8,457 10,420 6,193 2,723 1,675 1,346 Cfsm 1.08 2.20 5.65 6.07 7.16 3.47 6.04 7.44 4.43 1.94 1.20 0.961 In. 1.24 2.46 6.51 7.00 7.46 4.00 6.74 8.58 4.94 2.24 1.38 1.07 Ac-ft 92,530 183,300 486, 100 522,400 556,600 298,600 503,200 640,700 368,800 167,400 103,000 80,070 Calendar year 1957 : Max 23,900 Min 1,030 Mean 5,224 Cfsm 3.73 In. 50.65 Ac-ft 3,782,000 Water year 1957-58: Max 25,100 Min 1,030 Mean 5,529 Cfsm 3.95 In. 53.62 Ac-ft 4,003,000 Peak discharge (base, 16,000 cfs). Dec. 26 (4:30 p.m.) 16,100 cfs (14.63 ft); Jan. 17 (11 p.m.) 16,600 cfs (14.79 ft); Feb. 25 (6 p.m.) 17,100 cfs (14.94 ft): Apr. 21 (time unknown) 26,500 cfs (17.56 ft).______* Discharge measurement made on this day. Note. Shifting-control method used May 18-29. COWLITZ RIVER BASIN 201

2385. Mill Creek near Salkum, Wash.

Location. Lat 46°30'50", long 122°37'20", In SW^NE^ sec. 24, T. 12 N., R. 1 E., on right bank half a mile upstream from mouth and l£ miles southeast of Salkum. Drainage area.--20.9 sq ml. Records available. May 1955 to September 1958. Gage. Water-stage recorder. Altitude of gage Is 520 ft (from topographic map). Extremes. Maximum discharge during year, 366 cfs Dec. 26 (gage height, 3.74 ft); mini mum, 1.7 cfs sometime Aug. 18 to Sept. 10 (gage height, 1.52 ft, from recorded range in stage). 1955-58: Maximum discharge, 940 cfs Dec. 11, 1955 (gage height, 5.16 ft); minimum, 1.7 cfs sometime Aug. 8 to Sept. 10, 1958; minimum gage height, 1.41 ft Sept. 6, 7, 10, 12, 13, 1955. Remarks. Records good except those for periods of no gage-height record, which are fair. Mo known regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 26 Dec. 27 to Sept. 30 1.6 2.3 2.5 1.5 1.4 2.1 34 1.8 10.5 3.0 166 1.6 3.2 2.5 84 2.0 3.6 324 1.7 6.1 3.0 167 1.8 11.0 3.5 295 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2.3 14.5 95 98 151 ~95107 37 *51 20 18 3.2 3.0 2 275 11.5 99 90 127 38 44 18 IF 3.0 2.6 3 2.8 10 73 80 112 84 33 38 16 12.5 3.2 2.5 4 2.6 8.7 59 71 97 76 31 34 15 11 3.4 2.3 5 3.1 8.1 51 65 90 83 29 30 14 9.8 3.0 2.2 6 3.4 7.0 98 58 *81 78 26 28 6045- 8.2 2.8 2.2 7 4.3 7.0 112 55 76 78 25 25 7.7 2.8 2.1 8 5.3 6.5 96 58 74 83 24 23 30 7.7 2.8 2.1 9 3.7 6.5 76 65 81 77 26 22 20 7.3 2.6 2.1 10 2.8 6.5 64 69 108 67 53 21 15 6.9 2.6 *2.2 11 2.8 21 56 74 90 62 37 19.5 14 6.5 2.6 2.4 12 2.8 37 51 90 113 57 31 18.5 13 6.1 2.4 2.4 13 9.3 87 45 76 145 52 32 17.5 11 5.7 2.2 2.4 14 8.1 ~88114 48 88 133 47 46 16 10 5.4 272 6.8 15 5.0 43 167 127 46 103 15.5 9 *5.0 2.2 6.9 16 4.3 62 41 162 175 46 173 15 *8.7 4.7 2.2 5.7 17 5.0 46 50 200 149 56 149 14.5 7.3 4.4 2.2 6.5 18 4.7 38 62 138 136 61 126 14.5 6.5 4.4 2.2 4.7 19 4.0 43 116 113 113 *51 127 15.5 6.1 4.7 2.2 6.5 20 4.0 *33 147 loo 98 49 171 15 6.1 4.4 2.2 7.3 21 3.7 28 *153 101 88 57 220 14.5 5.7 4.4 2.2 4.7 22 5.0 27 143 90 119 50 200 14 5.4 4.1 2.2 4.7 23 17 24 111 97 112 49 149 14 5.0 3.9 2.2 4.1 24 14.5 22 145 198 136 67 124 is-13 S7S 3.6 2.2 3.9 25 13 23 188 151 155 62 112 18.5 3.4 2.2 3.9

26 14.5 24 215"310 119 159 56 94 is 13 3.4 2.3 3.6 27 12 23 112 145 50 90 13 15 3.4 2.7 3.2 28 9.3 38 184 151 121 45 78 15 17.5 3.2 3.5 3.2 29 8.1 30 155 153 - 44 65 14 16.5 3.2 5.0 3.0 30 17 31 129 175 44 58 13 22 3.4 4.0 3.0 31 18.5 110 200 38 17 3.4 3.0 Total 215.7 925.3 3,322 3,464 3,314 1,917 2,507 631.0 473.1 194.8 83.5 112.2 Mean 6.96 30.8 107 112 118 61.8 83.6 20.4 15.8 6.28 2.69 3.74 Cfsm 0.333 1.47 5.12 5.36 5.65 2.96 4.OO 0.976 0.756 0.300 0.129 0.179 In. 0.38 1.65 5.91 6.16 5.90 3.41 4.46 1.12 0.84 0.35 0.15 0.20 Ac-It 428 1,840 6,590 6,870 6,570 3,800 4,970 1,250 938 386 166 223 Calendar year 1957: Max 370 Mln 2.2 Mean 47.8 Cfsm 2.29 In. 31.03 Ac-ft 34,6OO Water year 1957-58: Max 310 Kin 2.1 Mean 47.0 Cfsm 2.25 In- 30.53 Ac-ft 34,O3O

* Discharge measurement madeide on this day.day Note. No gage-height ird Apr. 29, May 15 to June 15, Aug. 18 to Sept. 9; discharge estimated n basis of records for :arby stations.

534540 O -60 -14 202 COWLITZ RIVER BASIN

2420. Silver Lake at Silver Lake, Wash.

Location..--Lat 46°17'15", long 122°48 I 30", in NE^ sec. 4, T. 9 N., R. 1 W., on left shore at Silver Lake, 5 miles east of Castle Rock. Drainage area. 41.5 sq mi. Records available. July 1949 to September 1950 (fragmentary), August 1953 to September

Gage. Water-stage recorder. Altitude of gage is 480 ft (from topographic map). Prior tfo Sept. 30, 1950, staff gage at same site and datum. Extremes. Maximum gage height during year, 4.85 ft Dec. 28; minimum, 1.32 ft Sept. 10. 1949-50, 1953-58: Maximum gage height, 5.90 ft Dec. 23-24, 1956; minimum observed, 0.18 ft Sept. 22, 1950. Remarks. No regulation or diversion above station.

ge height, In feet, at 12 p.m., water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1.53 1.74 2.53 _ 4.82 4.11 _ 2.33 2.27 1.85 1.50 2 TT53 1.74 2.60 _ 4.76 4.04 - 2.32 2.26 1.83 1749 3 1.53 1.74 2.64 - 4.68 3.95 - 2.30 2.25 1.81 1.48 4 1.54 1.73 2.65 4.29 _ 3.86 _ 2.30 2.25 1.80 1.47 5 1.55 TT73 2.68 4.18 - 3.80 - 2.31 2.24 1.78 1.46 6 1.56 1.73 2.79 4.08 _ 3.72 _ 2.42 2.22 1.77 1.45 7 1.57 1.73 2.90 3.99 _. 3.67 2.79 2.43 2.19 1.76 1.44 8 1.59 1.73 2.94 3.93 4.20 3.61 2.75 2.42 2.18 1.75 1.44 9 1.59 1.73 2.95 3.87 4.11 3.55 2.70 2.42 2.17 1.73 T~4S"1.40 10 1.60 1.78 2.95 3.84 4.04 3.49 2.66 2.41 2.16 1.72 11 1.60 1.84 2.93 3.82 4.00 3.43 2.62 2.41 2.15 1.70 1.41 12 1.61 1.97 2.91 3,79 3,96 3,37 2.57 2.40 2.13 1.68 1.40 13 1.63 2.10 2.88 3.80 3.95 3.31 2.55 2.40 2.12 1.67 1.40 14 1.63 2.18 2.88 3.96 3.91 3.23 2.52 2.38 2.11 1.65 1.40 15 1.63 2.22 2.86 4.11 3.95 3.18 2.49 2.37 2.09 1.64 1.42 16 1.62 2.25 2.86 4.24 3.99 3.12 2.46 2.35 2.07 1.63 1.45 17 1.63 2.26 2.96 4.32 4.04 3.09 2.44 2.34 2.05 1.61 1.45 18 1.63 2.28 3.10 4.33 4.04 3.05 2.40 2.32 2.05 1.60 1.44 19 1.63 2.31 3.51 4.30 4.00 3.01 2.42 2.30 2.04 1.58 1.45 20 1.63 2.31 3.77 4.25 3.93 3.00 2.40 2.28 2.03 1.56 1.45 21 1.63 2.31 3.95 4.17 3.87 - 2.37 2.27 2.02 1.55 1.43 22 1.67 2.31 4.10 4.08 3.88 - 2.35 2.25 2.02 1.54 1.43 23 1.69 2.31 4.20 4.13 3.85 _ 2.35 2.23 2.02 1.53 1.42 24 1.69 2.31 4.31 4.28 3.95 - 2.35 2.27 1.99 1.52 1.41 25 1.71 2.31 4.49 4.31 4.05 - 2.34 2.27 1.97 1.50 1.41 26 1.72 2.31 4.72 4.29 4.16 _ 2.33 2.27 1.96 1.48 1.41 27 1.72 2.32 4.78 4.31 4.20 - 2.34 2.27 1.95 1.48 1.41 28 1.72 2.32 4.84 4.39 4.17 _ 2.33 2.27 1.93 1.46 1.41 29 1.74 2.31 4.49 _ 2.32 2.27 1.90 TTST 1.41 30 1.75 2.39 _ 4.71 _ 2.31 2.28 1.88 1.52 1.40 31 1774 - 4.82 - 2.35 1.86 1.51 COWLITZ RIVER BASIN 203

2425. Toutle River near Silver Lake, Wash.

Location.- Lat 46°20'10", long 122-43'30", in SE£ sec. 19, T. 10 N., R. IE., on right bank just downstream from highway bridge, half a mile downstream from confluence of North and South Forks and 5 miles northeast of Silver Lake. Drainage area.--474 sq mi. Records available.--September 1909 to August 1912, October 1919 to October 1921, May to November 1922, December 1922 (monthly discharge only), January to December 1923, Sep tember 1929 to September 1958. Published as *near Castle Rock" 1909-12. Gage. Water-stage recorder. Datum of gage is 407.3 ft above mean sea level (from river- profile survey). Prior to Aug. 4, 1912, staff gage at site 2 miles downstream at datum 307.3 ft above mean sea level (unadjusted). Oct. 9, 1919, to Dec. 14, 1923, water-stage recorder at site 300 ft downstream at different datum. Sept. 25 to Nov. 10, 1929, chain gage and Nov. 11, 1929, to Oct. 5, 1938, Oct. 4, 1950, to Apr. 16, 1952, water-stage recorder, at site 50 ft upstream at present datum. Oct. 6, 1938, to Oct. 3, 1950, and since Apr. 17, 1952, water-stage recorder at present site and datum. Average discharge. 34 years (1909-11, 1919-21, 1922-23, 1929-58), 2,017 cfs (1,460,000 acre-ft per year). Extremes. Maximum discharge during year, 11,800 cfs Dec. 26 (gage height, 9.59 ft); mini mum, 325 cfs Oct. 1, 2; minimum gage height, 1.66 ft Sept. 12. 1909-12, 1919-23, 1929-58: Maximum discharge, 37,600 cfs Mar. 2, 1910 (gage height, 11.3 ft, from graph based on gage readings, site and datum then in use); maximum gage height recorded, 22.7 ft Dec. 23, 1933; minimum discharge, 240 cfs Nov. 21, 1929. Remarks. Records good except those for periods of no gage-height record, which are fair. No regulation or diversion above station. Revisions (water years). WSP 292: 1909, calendar year. WSP 754: 1930-32. WSP 1348: 1910(M), 1930-32(M), 1945.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 25 Dec. 26 to Sept. 30

1.6 280 4.0 2,690 1.6 315 4.0 2,690 2.2 630 7.0 7,650 2.2 660 6.0 6,150 3.0 1,350 3.0 1,390 9.0 10,800 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 325 554 2,370 2,940 4,520 5,2OO 1,620 2.040 1,460 882 460 420 2 370 502 2,890 2,590 3,850 2,700 1,650 1,920 1,290 818 460 380 3 447 483 2,260 2,320 3,340 2,300 1,710 1,870 1,250 794 460 370 4 386 459 1,890 2,110 *2,940 2,050 1,580 1,810 1,160 802 460 360 5 396 441 1,680 1,950 2,720 1,950 1,510 1,770 1,140 890 450 360 6 441 430 2,520 1,850 2,530 1,800 1.40O 1,710 2.200 786 450 360 7 430 413 4,160 1,600 2.400 1,800 1,340 *1,680 2,160 746 450 360 8 418 402 3,520 1,850 2,610 1,800 1.260 1,730 1,570 730 440 *360 9 386 391 2,860 1,870 3,560 1,750 1,280 1,780 1,380 695 430 365 10 370 418 2,360 2,050 4,540 1,650 1,670 1,800 1,390 681 420 370 11 345 1,260 2,030 2,380 3,580 1,600 1,630 1,810 1,360 660 420 365 12 340 1,930 1,830 2,860 4,040 1,550 1,590 1,680 *1, 310 639 410 350 13 483 3,670 1,660 2,670 5,150 1,500 1,620 1,520 1,260 618 410 355 14 574 *5.690 1,640 3,240 4,390 1,400 1,830 1,410 1,200 597 400 426 15 459 2,410 1,500 5,270 3,910 1,350 2,230 1,360 1,170 584 400 460 16 418 1,820 1,450 4,850 4,370 1,350 3,740 1,460 1,130 572 40O 420 17 413 1,480 1,880 6.620 4,120 1,350 4,980 1,570 1,100 554 390 450 18 391 1,320 3,010 5,470 4,250 1,350 4,500 1,650 1,080 *550 390 420 19 380 1,430 5,240 4,250 3,870 1,50O 4,000 1,790 1,060 540 390 400 20 365 1,220 6,810 3,470 3,360 *1,320 8. OOP 1,730 1,020 530 380 410 21 355 1,080 5,590 3,050 2,980 1,490 6,000 1,710 971 520 380 380 22 370 995 4,520 2,640 3,270 1,590 5,200 1,790 944 520 380 400 23 686 941 3,820 2,880 3,330 1,500 4,500 1,890 890 510 370 370 24 828 878 4,290 5,590 4,880 1,830 4,000 1,770 899 510 370 360 25 735 869 6,280 4,460 6.090 1,970 3,500 1,770 1,060 500 370 400 26 644 914 10.000 3,600 5,560 1,960 3,000 1,740 874. 490 370 380 27 574 860 6,480 3,270 4,680 1,810 2,800 1,800 935 490 370 360 28 534 914 *5,750 4,810 3,800 1,690 2,600 1,690 980 480 400 350 29 495 852 5,120 5,270 - 1,600 2,300 1,510 926 470 450 350 30 630 869 4,140 5,640 1,710 2,170 1.550 944 470 560 550 31 630 3,420 5 5OO 1,650 1,380 460 450 Total 14,591 33,895 112,970 109, 120 108,640 53,870 85,230 52,490 36,113 19,088 12,940 11,441 Mean 471 1,130 3,644 3,520 3,880 1,738 2,841 1,693 1,204 616 417 381 Cfsm 0.994 2.38 7.69 7.43 8.19 3.67 5.99 3.57 2.54 1.30 0.880 0.804 In. 1.14 2.66 8.86 8.56 8.52 4.23 6.69 4.12 2.83 1.50 1.02 0.90 Ac-ft 28,940 67,230 224,100 216,400 215,500 106,800 169, 100 104,100 71,630 37,860 25,670 22,690 Calendar year 1957: Max 11,500 Mln 300 Mean 1,663 Cfsm 3.51 In. 47.62 Ac-rt 1, 204,000 Water year 1957-58: Max 10,000 Mln 325 Mean 1,782 Cfsm 3.76 In. 51.03 Ac-ft 1,290,000 Peak discharge (base, 9,OOO efs). Dee. 26 (l a.m.) 11,800 efs (9.59 ft).______* Discharge measurement made on this day. Note. Ho gage-height record Feb. 28 to Mar. 19, Apr. 18-29, July 18 to Sept. 8, Sept. 15-50; dis charge estimated on basis of 2 discharge measurements, recorded range In stage, and records for nearby stations. 204 COWLITZ RIVER BASIN

2430. Cowlitz River at Castle Rock, Wash.

Location. Lat 46°16<30", long 122°54'50", in SE^ sec. 10, T. 9 N., R. 2 W., on right bank at- highway bridge in Castle Rock, 2f miles downstream from Toutle River and 14 miles upstream from mouth. Drainage area. 2,238 sq mi. Records available. December 1926 to September 1958. Gage.--Water-stage recorder. Datum of gage is 19.73 ft above mean sea level, datum of ^929. Prior to Dec. 18, 1933, staff gage at site 2 miles upstream at datum 14.93 ft higher. Dec. 18, 1933, to June 13, 1934, staff or wire-weight gages and June 14 to Sept. 30, 1934, water-stage recorder, at present site at datum 5 ft higher. Average discharge.--31 years (1927-58), 8,982 cfs (6,503,000 acre-ft per year). Extremes. Maximum discharge during year, 35,200 cfs Apr. 21 (gage height, 16.40 ft); minimum, 1,660 cfs Oct. 22 (gage height, 7.26 ft). 1926-58: Maximum discharge observed, 139,000 cfs Dec. 23, 1933 (gage height, 31.6 ft, present datum), from rating curve extended above 65,000 cfs; minimum, 998 cfs Nov. 7, 8, 1935. Remarks.--Records excellent. Minor diversions for domestic and farm use above station. No regulat ion. Revisions. WSP 1218: Drainage area.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 7.2 1,570 11.0 11,800 8.0 3,050 13.0 19,400 9.0 5,650 17.0 38,200 10.0 8,500 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,740 3,010 6,500 12,600 18,100 15.200 6,270 9,140 9, 870 4.750 2,560 2,070 2 1,820 2,700 10,100 11,000 15,500 13,200 6,290 9,480 9,260 *4,460 2,480 2,030 3 2,000 2,500 8,590 9,740 13,700 11,700 6,410 9,770 8,830 4,250 2,460 1,930 4 1,950 2,350 7,400 8,770 12,300 10,500 6,010 10, 000 8,300 4,190 2,480 1,850 5 1,860 *2,230 6,520 8,150 11,100 9,940 5,760 9,870 8,040 4,350 2,380 1,770 6 1,950 2,140 7,400 7,630 10,300 9,420 5,460 10, 000 10,200 4,140 2,310 1.720 7 1,910 2,090 15,000 7,370 9.710 8,800 5,270 *10,200 12,700 4,110 2,310 1,740 8 1,930 2,020 15,200 7.54Q 9,710 8,830 5,160 10,800 4,190 2,340 1,780 9 1,900 1,980 13,700 7,750 11,100 8,360 5,240 12,200 8^650 4,030 2,360 *1, 830 10 1,780 1.960 11,500 8,180 14,900 7,750 6,100 12,700 8,330 3,770 2,360 1,860 11 1,720 3,170 9,840 9,260 *14,200 7,250 6,800 13,100 7,980 3,670 2,360 1,860 12 1,700 5,540 8,800 11,200 14,300 6,850 6,740 12,800 *7,690 3,540 2,380 1,830 13 1,800 11,500 7,980 11,100 18, 100 6,490 6,850 10,600 7,220 3,500 2,340 1,750 14 2,140 14,100 7,570 11,800 17,800 6,100 7,860 9,050 6,800 3,350 2,250 1,770 15 2,180 10,900 6,990 20,800 16,200 5,820 9,170 8.470 6,740 3,210 2,180 1,980 16 1,980 8,090 6,490 20,900 18,200 5,650 15,100 8,890 6,770 3,100 2,160 2,070 17 1,880 6,520 6,970 25.800 17,600 5,680 16, 400 10, 400 6,830 3,030 2,160 2,190 18 1,880 5,540 9,170 24,200 18,300 5,760 19, 000 11,900 7,170 3,050 2,090 2,310 19 1,820 5,380 13,100 19,700 18,400 5,520 17,500 13,300 7,200 3,120 2,050 2,030 20 1,740 4,890 20, 800 16,500 17,100 *5.580 27,100 14,300 7,110 3,100 2.020 2.460 21 1,700 4,300 19,300 14,300 15, 400 5,730 54,500 13,800 6,990 2,980 2,020 2,340 22 1.690 3,930 17,600 12,300 15,300 6,130 31,000 14,800 6,740 2,850 2,030 2,210 23 2,270 3,720 14,800 11,400 16,300 6,130 24,200 15, 800 6,460 2,810 2,070 2,180 24 3,190 3,570 15,300 19,400 19,000 7,050 19,600 16.000 6,320 2,770 2,090 2,020 25 5.500 3,520 19,400 18,700 25.700 7,630 16,700 15,300 6,690 2,680 2,100 1,950 26 3,230 3,570 50,800 15,700 25,600 7,660 14,300 15,500 5,850 2,660 2,100 1,960 27 3,190 3,570 26,100 13,900 21,300 7,200 12,500 15,500 5,410 2.600 2,100 1,950 28 2,810 3,720 *21,700 16,600 17,800 6,800 11, 100 14,800 5,620 2,640 2,070 1,880 29 2,540 3,640 20,400 18,600 6,550 10,000 12,700 5,300 2,660 2,120 1,850 30 2,540 3,520 17,200 20, 600 6,630 9 300 10,500 SjOQQ 2, 680 1, 820 31 3,050 14,500 21,900 6,380 9,680 *2,620 2^310 Total 67,190 135,660 416,720 443,190 453,020 238,090 373,690 371,350 226,040 104,820 69,420 58, 990 Mean 2,167 4,522 13,440 14,300 16,180 7,680 12,460 11, 980 7,535 3,381 2,239 1,966 Cfsm 0.968 2.02 6.01 6.39 7.23 3.43 5.57 5.35 3.37 1.51 1.00 0.878 In. 1.12 2.25 6.92 7.36 7.53 3.96 6.21 6.17 3.76 1.74 1.15 0.98 Ac-ft 135,500 269,100 826,600 879,100 898,600 472,200 741,200 736,600 448,300 207,900 137,700 117,000 Calendar year 1957: Max 37,900 Min 1,690 Mean 7,571 Cfsm 3.38 In. 45.92 Ac-ft 5,481,000 Water year 1957-58: Max 34,500 Min 1,690 Mean 8,105 Cfsro 3.62 In. 49.15 Ac-ft 5,868^000 Peak discharge (base, 32,000 cfs). Dec. 26 (l p.m.) 32,200 cfs (15.80 ft); Apr. 21 (12 m.) 35,200 efs (16.40 ft).______* Discharge measurement made on this day. COWLITZ RIVER BASIN 205

2435. Arkansas Creek near Castle Rock, Wash.

Location. Lat 46°15'50", long 122°58'00", in Wj sec. 17, T. 9 N., R. 2 W., on right bank 3 miles upstream from mouth and 3 miles west of Castle Rock. Drainage area. 19.4 sq mi. Records available. "May 1949 to September 1958. Gage. Water-stage recorder. Altitude of gage is 75 ft (from topographic map). Average discharge. 9 years, 93.5 cfs (67,690 acre-ft per year). Extremes. Maximum discharge during year, 824 cfs Dec. 19 (gage height, 4.09 ft); minimum, 1.5 cfs Aug. 25, 26 (gage height, 0.37 ft). 1949-58: Maximum discharge, 2,270 cfs Dec. 9, 1953 (gage height, 6.26 ft), from rating curve extended above 700 cfs on basis of summation of culvert measurements on two main tributaries a quarter of a mile above station; minimum, 1.3 cfs Aug. 22, 1951; minimum gage height, that of Aug. 25, 26, 1958. Remarks. Records good except those below 4 cfs, which are fair. Some diversion for domestic use. No regulation. Revisions (water years). WSF 1448: 1954.

Rating tables, water year 1957-58 (gage height. In feet, and discharge, In cubic feet per second) (Shifting-control method used Dec. 20-24) Oct. 1 to Dec. 19 Dec. 20 to Sept. 3O 3.5 2.0 89 0.8 2.0 90 9.8 2.5 170 3.0 2.5 173 1.1 20 3.0 295 6.4 3.0 305 1.5 41 3.6 550 15.5 4.0 77O 1.5 40

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 3.9 16 196 177 286 173 71 75 26 15.5 3.8 3.6 2 4.O 14.5 182 149 229 146 70 69 21 I2TS 3.4 3.0 3 4.6 13.5 137 130 188 129 66 64 20 11 3.8 3.2 4 4.6 12.5 112 113 157 114 64 60 18.5 9.8 4.1 3.2 5 12 *12 99 101 139 118 1 57 18 8.9 3.6 2.8 6 8.8 11 294 93 127 101 58 *53 49 8.1 3.5 2.4 7 6.8 11 292 83 118 1OO 55 51 33 7.8 3.1 2.1 8 8.6 *10.5 220 83 112 110 53 48 25 8.3 3.2 27T 9 8.1 T6T5 176 82 137 1O8 55 45 22 8.9 3.0 2.3 10 6.1 14.5 148 83 149 103 74 43 22 8.3 2.9 2.5 11 5.5 54 124 108 *144 96 59 41 22 7.8 2.6 2.9 12 6.8 136 109 144 155 90 56 39 *22 7.1 2.6 2.8 13 16 218 94 125 151 83 55 36 20 6.8 2.5 2.9 14 11.5 174 90 217 153 78 56 35 19 6.6 2.4 4.1 15 7.9 119 79 460 164 75 113 33 17.5 5.8 2.4 7.1 16 6.8 90 77 352 24O 71 163 31 15.5 5.4 2.3 6.0 17 7.0 74 111 308 240 74 204 30 14 *5.2 2.3 6.6 18 6.6 67 141 245 229 77 191 28 13 5.0 2.3 5.6 19 6.1 63 509 2OO *195 72 217 30 13 5.6 2.3 5.8 20 5.7 53 382 175 167 *71 283 27 13 5.2 2.1 5.2 21 5.1 49 *315 151 148 74 254 25 12 5.2 1.8 4.6 22 6.8 45 274 133 148 67 209 23 11 5.0 1.8 4.8 23 22 42 245 152 132 7T 175 23 10.5 4.8 2.0 4.3 24 28 4O 293 251 202 72 157 24 15.5 4.3 1.8 3.9 25 2T 39 474 222 245 84 140 24 21 3.9 1.6 6.8 26 19 37 545 191 265 85 125 22 17 3.8 1.8 5.6 27 15.5 36 413 175 24O 80 112 23 16 3.5 2.1 4.1 28 13.5 44 363 20O 202 76 1OO 24 15 3.4 3.0 3.6 29 12.5 37 315 232 74 89 22 15 *~53.1 *TI15.5 3.6 30 24 52 254 312 71 83 21 18 . 5 3 .O 3.4 31 20 2O9 36O 7O 27 4.6 5.0 Total 334.8 1,595.0 7,272 5,807 5,062 2,813 3,468 1,153 575.0 205.0 105.6 120.9 Mean 10.8 53.2 235 187 181 90.7 116 37.2 19.2 6.61 3.41 4.03 Cfsm O.557 2.74 12.1 9.64 9.33 4.68 5.98 1.92 O.990 0.341 O.176 0.208 In. O.64 3.06 13.94 11.13 9.70 5.39 6.65 2.21 1.10 0.39 0.2O 0.23 Ac-ft 664 3,160 14,420 11,520 10,040 5,580 6,880 2,290 1,140 407 209 24O Calendar year 1957: Max 545 Mln 2.9 Mean 69.5 Cfam 3.58 In. 48.67 Ac-ft 50,330 Water year 1957-58: Max 545 Mln 1.6 Mean 78.1 Cfsm 4.03 In. 54.64 Ac-ft 56,550 Peak discharge (base, l.OOO efs). No peak above base. * Discharge measurement made on this day. 206 COWLITZ RIVER BASIN

2450. Coweman River near Kelso, Wash.

Location. Lat 46°07'40", long 122°50'10", in S| sec. 32, T. 8 N., R. 1 W., on right bank 3 miles downstream from Goble Creek, 3.8 miles southeast of Kelso, and 7 miles upstream from mouth. Drainage area. 119 sq mi. Records avalaable. July 1950 to September 1958. Sage. Water-stage recorder. Altitude of gage is 100 ft (from topographic map). Average discharge. 8 years, 436 cfs (315,700 acre-ft per year). Extremes. Maximum discharge during year, 4,690 cfs Dec. 19 (gage height, 10.77 ft); mini mum, 28 cfs Aug. 25, 26, Sept. 8 (gage height, 3.62 ft). 1950-58: Maximum discharge, 7,490 cfs Dec. 9, 1953 (gage height, 12.75 ft), from rating curve extended above 3,900 cfs as explained below; minimum, 22 cfs Sept. 22, 1951; minimum gage height, that of Aug. 25, 26, Sept. 8, 1958. Flood of Feb. 24, 1950, reached a stage of 12.8 ft, from floodmarks (discharge, 7,730 cfs, from rating curve extended above 3,900 cfs on basis of slope-area measure ment of peak flow). Remarks. Records excellent. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height. In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 19 Dec. 20 to Sept. 30 3.7 5.5 452 3.6 26 6.O 69O 4.1 80 6.O 667 4.O 76 7.0 1,210 4.5 160 7.0 1,210 4.5 167 9.O 2,770 5.0 287 10.O 3,760 5.0 301 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May .June July Aug. Sept. 1 33 76 l.OOO 717 1,380 766 42O 354 172 133 44 37 2 53 65 936 6OO 1,060 65O 449 327 125 114 43 35 3 72 61 598 507 860 555 475 304 120 102 44 34 4 50 58 441 449 704 491 431 283 112 96 48 35 5 72 55 364 406 604 491 410 271 105 88 43 33 6 71 52 1,240 375 519 434 364 263 392 82 41 30 7 58 SO 1,260 354 479 424 333 251 280 79 39 30 8 55 49 815 36l 503 449 307 238 189 79 42 29 9 50 48 598 358 663 424 295 225 158 78 39 33 1O 42 Z§ 464 392 l.OOO 414 Si? 217 174 76 38 37 11 39 325 *384 523 785 392 336 209 *177 72 37 35 12 39 572 335 753 875 368 320 196 189 68 37 33 13 86 1.010 293 640 1,190 344 314 184 167 66 36 34 14 100 i]ooo 304 861 1,060 *317 320 174 156 66 36 45 15 72 6O6 268 1,420 91O 301 491 163 141 62 35 59 16 61 398 282 1,170 1,140 289 870 156 127 58 34 56 17 58 296 444 1,420 1,010 3T4 1,140 152 114 58 34 82 18 53 257 1,190 1,090 905 323 1.O80 152 105 59 34 61 19 48 293 2. 920 855 762 3O1 935 158 101 62 34 56 20 45 242 2,510 730 645 3O4 1,740 145 102 61 33 75 21 43 211 *1,780 622 555 327 1,540 139 96 59 32 59 22 46 188 1,430 539 650 330 1,360 131 9O 57 30 65 23 14£ 172 1,180 658 658 323 1,030 139 85 56 32 52 24 128 156 1,320 1,330 985 396 825 137 112 53 32 48 25 98 151 1,830 1,110 1,380 487 *686 135 156 49 29. 50 26 87 156 2,430 880 1.520 555 596 123 112 49 29 52 27 74 138 1,860 753 1,250 483 535 135 118 48 *30 43 28 *65 178 1,600 1,240 950 420 468 143 121 44 35 41 29 60 149 1,420 *1,570 - 389 420 131 125 43 43 41 3O 1O9 210 1,100 1.85O 403 382 13"9116 160 *4B 72 39 31 875 1,840 396 48 43 Total 2,107 7,281 33,471 26,376 25,002 12,860 19,244 5,890 4,381 2,110 1,178 1,359 Mean 68.0 243 1,08O 851 893 415 641 190 146 68.1 38.0 45.3 Cfsm 0.571 2.04 9.08 7.15 7.50 3.49 5.39 1.60 1.23 0.572 0.319 0.381 In. 0.66 2.28 10.46 8.24 7.81 4.02 6.01 1.84 1.37 0.66 0.37 0.42 Ac-ft 4,180 14,440 66,390 52,320 49,590 25,510 38,170 11, 680 8,690 4,190 2,340 2,700 Calendar year 1957: Max 2,320 Mln 27 Mean 348 Cfsm 2.92 In. 39.65 Ac-ft 251,700 Water year 1957-58: Max 2,920 Mln 29 Mean 387 Cfsm 3.25 In. 44.14 Ac-ft 280,200 Peak discharge (base, 2,600 cfs). Dec. 19 p.m.) 4,690 cfs (10.77 ft); Dec. 25 (10 p.m.) 2,770 cfs (9.00 ft). Discharge measurement made on this day. ELOKOMIN RIVER BASIN 207

2475. Elokomin River near Cathlamet, Wash.

Location. Lat 46°13'10", long 123°20 I 30", in SE£ sec. 31, T. 9 N., R. 5 W., on right bank 125 ft upstream from railroad bridge, 2|- miles northeast of Cathlamet, and 4^ miles upstream from mouth. Drainage area. 65.8 sq mi. Records available. October 1940 to September 1958. Gage. Water-stage recorder. Datum of gage is 29.60 ft above mean sea level, datum of 1929. Prior to June 25, 1941, staff gage at same site and datum. Average discharge.--18 years, 369 cfs (267,100 acre-ft per year). Extremes. Maximum discharge during year, 3,060 cfs Jan. 15 (gage height, 7.00 ft), mini mum, 21 cfs Aug. 24-27; minimum gage height, 1.03 ft Oct. 1, 2. 1940-58: Maximum discharge, 7,300 cfs Feb. 17, 1949 (gage height, 12.66 ft), from rating curve extended above 2,100 cfs on basis of slope-area measurement at gage height 12.66 ft; minimum, 18 cfs Oct. 6, 7, 15, 16, 1952; minimum gage height, 1.01 ft Sept. 22-26, 1957. Maximum stage known, 17.2 ft in December 1933, from information by local residents. Remarks. Records good except those for period Mar. 1 to Apr. 15, which are fair. Some diversions for irrigation and domestic use. No regulation. Revisions (water years).--WSP 1154: 1948. WSP 1218: Drainage area. WSP 1318: 1942-47(M).

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Mar. 24 to Apr. 14, June 1-5) Oct. 1 to Jan. 15 Jan. 16 to Sept. 30

1.0 3.0 485 1.1 17 3.0 464 1.3 46 4.0 970 1.3 4.0 960 1.7 113 5.0 1,580 1.7 99 6.0 2,280 2.3 253 7.0 3,060 2.3 236 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 23 74 775 656 984 622 315 294 118 74 32 47 2 2? 65 686 565 805 541 324 271 89 63 31 39 3 32 60 530 489 680 464 324 252 84 59 35 38 4 28 56 428 431 572 409 297 233 79 55 35 35 5 38 52 378 384 505 432 277 220 71 52 33 31 6 37 49 1,170 348 456 373 258 210 *200 49 31 28 7 32 *48 1,240 319 428 387 236 195 158 49 31 27 8 36 46 921 34T 381 398 226 *185 108 51 29 26 9 36 45 705 351 558 394 223318" 178 96 51 28 28 10 32 58 565 351 750 377 168 92 48 27 31 11 27 342 477 501 604 360 260 161 89 47 27 34 12 28 944 416 695 680 340 233 157 84 43 27 29 13 72 1,180 361 543 755 315 228 150 82 42 26 32 14 60 994 384 1,290 750 294 223 148 77 40 26 52 15 39 676 526 2.460 793 285 453 143 72 37 25 63 16 35 462 332 1,550 1.110 269 730 137 69 37 26 53 17 37 361 428 1,280 1,060 269 914 131 65 37 26 144 18 34 319 676 972 984 280 820 128 63 37 26 87 19 31 293 *2.190 785 805 266 1,170 152 63 38 25 104 20 29 248 1,770 665 665 255 1.780 128 63 37 24 79 21 27 221 1,520 590 572 263 1,320 120 59 37 23 77 22 28 200 1,290 505 577 250 1,080 114 58 37 23 66 23 112 181 1,160 570 518 255 835 114 56 35 24 60 24 191 172 1,610 1,330 893 252 700 114 n 34 22 53 25 TT9 167 1,880 1,060 1,070 *283 618 112 90 33 22 79 26 133 167 1,990 830 1,060 294 523 105 72 32 22 65 27 109 158 1,510 720 894 269 448 107 74 32 25 55 28 85 218 1,350 *882 740 252 398 118 77 28 27 51 29 70 174 1,160 876 - 250 353 112 79 *31 *165 48 30 103 226 943 1,050 288 321 101 92 34 90 44 31 94 786 1,210 291 35 49 Total 1,785 8,256 29,957 24,599 20,655 10,277 16,205 4,876 2,556 1,314 1,062 1,605 Mean 57.6 275 966 794 738 332 540 157 85.2 42.4 34.3 53.5 Cfsm 0.875 4.18 14.7 12.1 11.2 5.05 8.21 2.39 1.29 0.644 0.521 0.813 In. 1.01 4.67 16.93 13.90 11.67 5.81 9.16 2.76 1.44 0.74 0.60 0.91 Ac-ft 3,540 16,380 59,420 48,790 40,970 20,380 32,140 9,670 5,070 2,610 2,110 3,180 Calendar year 1957: Max 2,190 Mln 21 Mean 304 Cfsm 4.62 In. 62.71 Ac-ft 220,100 Water year 1957-58: Max 2,460 Mln 22 Mean 337 Cfsm 5.12 In. 69.60 Ac-ft 244,300 Peak discharge (base, 3,600 cfs). No peak above base. * Discharge measurement made on this day. 208 GRAYS RIVER BASIN

2490. Grays River above South Fork, near Grays River, Wash.

Location. Lat 46°23'35", long 123°28'35", in NW£ sec. 31, T. 11 N., R. 6 W., on right bank 500 ft upstream from the South Fork and 7 miles northeast of town of Grays River. Drainage area. 33.4 sq mi. Records available.--October 1955 to September 1958. Gage. Water-stage recorder. Altitude of gage is 350 ft (from topographic map). Extremes. Maximum discharge during year, 3,730 cfs Dec. 25 (gage height, 8.28 ft), from rating curve extended above 1,600 cfs as explained below; minimum, 18.5 cfs Aug. 23-27 (gage height, 2.89 ft). 1955-58: Maximum discharge, 7,050 cfs Dec. 9, 1956 (gage height, 10.23 ft), from rating curve extended above 1,600 cfs on basis of slope-area measurement of peak flow; minimum, that of Aug. 23-27, 1958. Remarks. Records good. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 25 Dec. 26 to Sept. 30 2.9 5.0 700 2.8 5.0 690 3.2 6.0 1,340 3.1 6.0 1,340 3.5 102 7.0 2,190 3.5 7.0 2,190 4.0 247 8.0 3,350 4.0 240 8.0 3,350 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 26 130 562 459 740 454 240 175 64 44 24 30 2 28 114 575 582 590 374 267 158 54 41 24 26 3 50 102 455 326 490 318 290 147 51 40 27 24 4 28 96 344 286 405 274 267 154 50 39 25 23 5 54 86 297 248 547 274 248 126 *47 38 24 22 6 57 80 908 222 551 229 211 117 155 36 23 21 7 58 *77 901 198 314 244 188 *110 95 35 25 20 8 59 72 700 235 342 244 185 106 68 35 25 20 9 57 67 536 251 793 240 198 97 65 35 22 21 10 31 144 424 282 865 229 405 95 60 34 22 22 11 29 455 370 414 645 218 286 92 56 31 22 24 12 40 1,110 306 690 650 204 240 88 55 51 22 22 13 160 1,400 266 495 685 191 229 84 52 30 21 23 14 81 1,020 281 1,510 630 182 218 79 51 30 21 70 15 57 700 235 2,250 612 172 474 78 50 29 21 64 16 55 510 251 1,390 805 166 685 74 49 29 21 56 17 58 392 504 1,140 907 T72 1,010 70 46 29 21 64 18 49 559 750 775 "8TT1,120 198 769 68 44 28 20 54 19 45 297 1,810 580 185 1,150 75 44 28 20 121 20 41 244 *1,520 482 595 185 1,420 67 45 29 19 72 21 40 209 1,250 400 518 198 951 64 41 28 19 72 22 50 185 913 343 550 182 723 64 40 28 19 64 23 483 168 835 747 545 178 565 61 40 27 19 58 24 654 154 1,490 1,560 965 178 472 60 47 26 18.5 52 25 548 151 2,500 1,070 1,070 204 378 60 52 26 18.5 68 26 295 148 1,950 805 853 *215 359 58 45 25 18.5 58 27 219 146 1,500 675 675 198 502 58 47 24 20 51 28 177 205 1,590 883 545 175 255 58 49 24 22 46 29 148 157 1,010 *825 - 175 222 55 47 *24 *56 44 30 190 174 728 984 175 191 -So54 49 25 45 41 31 154 555 1,000 220 25 29 Total 3,699 9,130 25,652 21,685 18,598 6,851 13,358 2,690 1,654 953 727.5 1,353 Mean 119 304 827 699 657 221 445 86.8 54.5 30.7 23.5 45.1 Cfsm 3.56 9.10 24.8 20.9 19.7 6.62 13.5 2.60 1.65 0.919 0.704 1.35 In. 4.12 10.17 28.56 24.14 20.49 7.65 14.87 5.00 1.82 1.06 0.81 1.51 Ac-ft 7,540 18,110 50,880 45,010 36,490 15,590 26,500 5,540 5,240 1,890 1,440 2,680 Calendar year 1957: Max 2,300 Min 26 Mean 268 Cfam 8.02 In. 109.10 Ac-ft 194,300 Water year 1957-58: Max 2,500 Mln 18 Mean 291 Cfam 8.71 In. 118.18 Ac-ft 210,500 Peak discharge (base, 2,900 cfs).--Dec. 25 (6 p.m.) 5,750 cfa (8.28 ft); Jan. 15 (12:50 a.m.) 2,980 cfs (7.71 ft).______* Discharge measurement made on this day. GRAYS RIVER BASIN 209

2495. Grays River below South Fork, near Grays River, Wash.

Location. Lat 46°23'30", long 123°28'35", in SW£ sec. 31, T. 11 N. , R. 6 W. , on right bank 400 ft downstream from South Fork and 7 miles northeast of town of Grays River. Drainage area. 56.3 sq mi. Records available. September 1955 to September 1958. Gage. Water-stage recorder. Altitude of gage is 350 ft (from topographic map). Extremes . Maximum discharge during year, 5,700 cfs Dec. 25 (gage height, 8.23 ft), from rating curve extended above 2,400 cfs by logarithmic plotting; minimum, 23 cfs Aug. 20-27; minimum gage height, 2.16 ft Aug. 24-27. 1955-58: Maximum discharge, 10,700 cfs Dec. 9, 1956 (gage height, 10.4 ft, from high-water mark in well), from rating curve extended above 2,400 cfs by logarithmic plotting; minimum, that of Aug. 20-27, 1958; minimum gage height, 2.10 ft Sept. 7-9, 1956. Remarks. --Records excellent except those above 3,000 cfs, which are good. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 25 Dec. 26 to Sept. 2.4 5.0 1,290 2.1 19 4.0 570 2.7 6.0 2,250 2.4 5.0 1,290 3.0 125 7.0 3,550 2.7 6.0 2,250 3.5 300 8.0 5,250 3.0 152 7.0 3,550 4.0 560 3.5 323 8.0 5,250 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 29 214 836 630 1,110 570 550 236 86 65 31 43 2 36 193 865 532 823 480 377 212 72 55 30 36 3 38 176 655 465 672 406 396 200 69 54 35 34 -4 33 160 524 410 526 364 368 185 65 51 33 51 5 43 148 450 368 470 373 341 174 *63 49 31 51 6 47 134 1,480 336 445 319 306 163 195 45 30 29 7 48 125 1,440 302 435 556 277 *157 154 44 28 28 8 50 *120 1,070 350 460 532 262 150 106 47 28 27 9 47 115 795 392 1,240 528 274 142 90 47 27 28 10 39 217 608 440 1,420 315 532 135 86 44 27 51 11 36 690 530 654 1,010 310 396 128 83 43 26 34 12 55 1,760 450 1,110 1,020 294 341 126 81 42 26 31 13 257 2.210 387 746 1,120 273 323 117 74 40 25 31 14 131 1,600 423 2,240 1,010 262 310 113 69 58 25 121 15 86 1,080 354 5.670 928 258 653 106 69 38 25 110 16 81 760 373 1,980 1,280 251 1,000 102 65 37 24 90 17 88 578 697 1,590 1,500 251 1,560 96 62 37 24 160 18 72 500 1,080 1,070 1.690 298 1,150 94 59 36 24 110 19 63 428 2,860 732 1,210 285 1,740 102 56 56 24 240 20 58 368 *2,350 612 844 285 2,210 92 56 36 24 145 21 54 322 1,860 505 678 302 1,420 86 55 55 23 150 22 78 288 1,400 440 725 281 1,070 84 55 34 23 126 23 636 259 1,270 1,050 711 281 774 83 53 53 23 113 24 907 240 2,280 2,260 1,380 273 606 81 66 33 23 100 25 524 232 3,570 1,530 1,510 319 495 79 74 32 23 140 26 461 229 2,940 1,150 1,260 *556 425 76 65 32 23 110 27 363 221 1,880 942 963 510 582 76 66 31 24 96 28 296 313 2,030 1,250 718 281 328 78 69 31 27 90 29 248 244 1,510 *1,160 - 275 289 74 68 *31 *90 84 30 304 280 1,050 1,390 281 258 11 69 31 81 31 244 774 1,500 314 51 39 Total 5,452 14,204 38,791 31,806 27,158 9,841 19,213 3,701 2,500 1,236 927 2,480 Mean 176 473 1,251 1,026 970 317 640 119 76.7 39.9 29.9 82.7 Cfsm 3.13 8.40 22.2 18.2 17.2 5.63 11.4 2.11 1.36 0.709 0.531 1.47 In. 3.60 9.38 25.62 21.01 17.94 6.50 12.69 2.44 1.52 0.82 0.61 1.64 Ac-ft 10,810 28,170 76,940 63,090 53,870 19,520 38,110 7,340 4,560 2,450 1,840 4,920 Calendar year 1957: Max 3,570 Min 28 Mean 403 Cfsm 7.16 In. 97.20 Ac-ft 291,900 Water year 1957-58: Max 3,670 Min 23 Mean 430 Cfsm 7.64 In. 103.77 Ac-ft 311,600 Peak discharge (base, 5,OOO cfs).--Dec. 25 (7 p.m.) 5,7OO cfs ).23 ft); Jan. 15 (12:15 a.m.) 5,360 cfs (8.06 ft). Discharge measurement made on this day. 210 GRAYS RIVER BASIN

2505. West Branch Grays River near Grays River, Wash.

Location.--Lat 46°23'10", long 123°33'30", on line between sec. 33, T. 11 N. R. 7 W., and sec. 4, T. 10 N., R. 7 W., on right bank 1 mile upstream from mouth and 3^ miles north east of town of Grays River. Drainage area. 16.3 sq mi. Records available. April 1949 to September 1958. Gage. Water-stage recorder. Altitude of gage is 71 ft (by barometer). Average discharge. 9 years, 127 cfs (91,940 acre-ft per year). Extremes. Maximum discharge during year, 1,520 cfs Jan. 14 (gage height, 5.22 ft); mini mum, 4.4 cfs Aug. 24-27 (gage height, 2.01 ft). 1949-58: Maximum discharge, 2,970 cfs Feb. 9, 1951 (gage height, 6.45 ft), from rating curve extended above 460 cfs as explained below; minimum, 4.2 cfs Sept. 5, 1951 (gage height, 1.78 ft). Flood of Feb. 22, 1949, reached a stage of 6.89 ft, from floodmarks (discharge, 3,700 cfs, from rating curve extended above 460 cfs on basis of slope-area measurement of peak flow. Remarks.--Records good except those for periods of doubtful or no gage-height record, which are fair. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Feb. 26) Oct. 1 to Feb Feb. 27 to Sept. 30

2.0 4.4 3.5 310 2.0 4.0 3.0 131 2.1 4.0 540 2.1 9.2 3.5 277 2.2 4.5 850 2.2 16 4.0 510 2.6 66 5.0 1,300 2.6 60 3.0 148 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 6.2 44 200 148 235 109"129 69 52 20 18 7.3 12 2 876 39 210 123 173 72 47 18 16 6.8 9.9 3 10 35 150 102 143 94 74 45 16 14.5 9.9 7.9 4 8.6 33 120 89 118 80 74 41 15.5 14 9.2 7.3 5 d9.5 30 100 78 98 78 66 38 *16 12.5 7.3 6.8 6 dlO 28 320 72 90 70 60 36 68 12 6.8 6.3 7 dlO.5 26 320 66 83 77 55 33 54 10.5 6.8 5.4 8 dlO.5 24 250 69 85 84 53 *36 37 11 6.8 4.9 9 d9.0 24 200 69 243 87 56 36 30 11 6,3 5.4 10 7.4 32 150 70 277 87 138 34 28 11 6.3 5.8 11 6.8 131 130 87 182 82 96 33 25 *10.5 6.3 5.8 12 8.0 *364 100 182 197 75 77 32 23 10.5 6.3 5.4 13 36 488 95 126 242 69 72 30 22 10.5 6.3 6.3 14 31 367 100 550 203 64 68 28 20 10.5 5.8 45 15 19 238 85. 959 182 62 143 27 19.5 9.9 5.8 37 16 15.5 170 90 562 273 59 227 25 18 9.2 5.4 36 17 19 140 200 498 303 56 284 24 17 9.2 5.4 39 18 16.5 120 350 295 384 60 214 24 16 9.2 5.4 30 19 13.5 110 *650 209 252 59 324 26 15.5 9.2 5.4 64 20 12.5 90 498 168 170 55 460 23 15.5 9.2 4.9 39 21 11 75 411 130 143 55 297 22 14.5 9.2 4.9 36 22 12.5 65 346 112 182 52 240 21 14.5 8.5 4.9 32 23 114 60 314 180 219 51 176 19.5 15.5 7.9 4.9 28 24 -94221 55 567 464 328 50 140 19.5 7.9 4.9 23 25 53 758 330 342 59 111 18.5 20 7.9 4.4 30 26 83 52 674 259 266 68 94 18 17 7.9 4.4 27 27 66 51 493 206 201 62 80 18.5 18 7.3 5.8 22 28 52 72 509 *310 158 *53 70 18 18.5 773 *6.8 19.5 29 46 56 359 277 - 52 62 18 19.5 7.3 3_6 18 30 55 60 252 306 55 56 18 19.5 7.9 16 31 51 191 326 60 20 7.9 13.5 Total 1,073.6 3,132 9,192 7,422 5,772 2,153 4,008 881.0 667.0 315.4 244.0 630.7 Mean 34.6 104 297 239 206 69.5 134 28.4 22.2 10.2 7.87 21.0 Cfsm 2.12 6.38 18.2 14.7 12.6 4.26 8.22 1.74 1.36 0.626 0.483 1.29 In. 2.45 7.15 20.97 16.93 13.17 4.91 9.14 2.01 1.52 0.72 0.56 1.44 Ac-ft 2,130 6,210 18,230 14,720 11,450 4,270 7,950 1,750 1,320 626 484 1,250 Calendar year 1957: Max 1,000 Mln 5.6 Mean 96.6 Cfsm 5.93 In. 80.48 Ac-ft 69,960 Water year 1957-58: Max 959 Mln 4.4 Mean 97.2 Cfsm 5.96 In. 80.97 Ac-ft 70,390

Peak discharge (base, 1,500 efs). Jan. 14 (12 p.m.) 1,520 efs (5.22 ft).______* Discharge measurement made on this day. d Doubtful gage-height record; discharge computed on basis of records for Grays River below South Fork, near Grays River. Note. No gage-height record Nov. 16 to Dec. 19; discharge estimated on basis of 1 discharge measurement and records for Grays River below South Fork, near Grays River. YOUNGS RIVER BASIN 211

2515. Youngs River near Astoria, Oreg.

Location. Lat 46°04'00", long 123°47'20", in NWi sec. 27, T. 7 N., R. 9 W., on left bank 50 ft upstream from crest of Youngs River Falls, 21 miles southwest of Olney, and 9 miles south of Astoria. Drainage area. 40.1 sq mi. Records available.--August 1927 to September 1958 (discontinued). Gage.--Water-stage recorder. Datum of gage is 63.27 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Prior to Mar. 12, 1934, at site l£ miles upstream at different datum. Average discharge.--31 years, 178 cfs (128,900 acre-ft per year). Extremes. Maximum discharge during year, 2,620 cfs Dec. 19 (gage height, 10.20 ft); minimum daily, 4.6 cfs Aug. 27, 28. 1927-58: Maximum discharge, 4,750 cfs Feb. 10, 1949 (gage height, 13.66 ft), from rating curve extended above 2,300 cfs; minimum, 3.3 cfs Sept. 22, 1951. Remarks. Records excellent except those for periods of no gage-height record, which are fair. Youngs River-Lewis and Clark Water District pipeline has diverted water 4 miles above station for domestic use below station since March 1941; water rights are for 2 cfs but probably much less is diverted. Revisions (water years). WSP 1218: Drainage area (present and former site). WSP 1448: 1928, 1929(M),1931, 1932(M), 1946.

Rating table, water year 1957-58 (gage height, In feet, discharge, In cubic feet per second) 0.6 4.6 2.5 61 5.0 440 1.0 10 3.0 102 7.0 1,150 1.5 3.5 160 9.0 2,030 2.0 4.0 233 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 7.1 42 695 £78 464 288 264 100 33 45 7.5 5.5 2 9.1 36 446 219 350 226 259 90 30 29 T^ 6.0 3 21 33 294 182 272 186 259 85 31 24 7.0 6.0 4 15 30 206 156 214 161 202 79 27 21 7.0 6.0 5 11 28 170 136 180 172 170 73 26 18 *7.1 5.5 6 9.1 25 796 124 162 147 143 69 "93132 16 6.5 5.5 7 12 24 765 111 156 226 124 64 15 6.5 5.0 8 15 23 461 142 1ST 260 112 59 54 16 6.5 5.0 9 14 21 312 148 610 276 18~6110 56 44 *17 6.0 5.0 10 12 56 219 187 782 242 53 40 16 6.0 5.0 11 9.4 287 178 405 485 205 *137 50 40 15 6.0 5.0 12 9.4 455 153 509 600 177 118 50 40 14 5.5 5.0 13 45 842 130 358 849 154 125 47 37 13 5.5 5.5 14 39 681 161 848 597 137 156 44 35 13 5.5 6.0 15 *22 410 130 *1 , 020 519 126 315 42 33 12 5.5 7.1 16 16 259 146 798 744 118 628 39 29 11 5.5 6.8 17 15 182 437 800 800 111 664 38 26 11 5.0 *9.3 18 14 153 642 509 942 115 488 35 24 10 5.0 8.9 19 12 136 1,850 362 *572 102 690 42 22 11 5.0 12 20 11 114 1,120 316 392 95 1,120 36 22 10 5.0 12 21 10 95 902 290 318 97 681 33 21 10 5.0 10 22 13 81 636 235 346 89 515 31 19 10 4.8 10 23 120 74 618 448 294 85 388 30 18 10 4.8 9.3 24 194 70 835 953 610 85 298 30 21 9.8 4.8 7.7 25 113 70 993 557 768 108 235 30 22 9.6 4.8 9.8 26 93 68 1,040 395 667 118 194 28 20 9.4 4.8 10 27 63 *63 849 412 503 100 164 28 24 9.0 4.6 8.8 28 49 89 804 737 372 90 142 *28 26 8.5 776 7.2 29 42 72 639 678 - 88 124 26 28 8.5 5.0 7.0 30 53 111 488 726 99 111 24 44 8.0 5.5 6.5 31 48 362 628 226 27 8.0 5.5 Total 1,116.1 4,630 17,477 13,667 13,755 4,709 9,122 1,466 1,061 437.8 175.3 218.4 Mean 36.0 154 564 441 491 152 304 47.3 35.4 14.1 5.65 7.28 Cfsm 0.898 3.84 14.1 11.0 12.2 3.79 7.58 1.18 0.883 0.352 0.141 0.182 In. 1.04 4.29 16.21 12.68 12.76 4.37 8.46 1.36 0.98 0.41 0.16 0.20 Ac-ft 2,210 9,180 34,670 27,110 27,280 9,340 18,090 2,910 2,100 868 348 433 Calendar year 1957: Max 1,850 Mln 6.7 Mean 166 Cfsm 4.14 In. 56.07 Ac-ft 119,900 Water year 1957-58: Max 1,850 Mln 4.6 Mean 186 Cfsm 4.64 In. 62.92 Ac-ft 134,500

Peak discharge (base, 2,100 cfg).--Dec. 19 (2:50 p.m.) 2,620 cfs (10.20 ft).______* Discharge measurement made on this day. Note. No gage-height record July 27 to Aug. 4, Aug. 7 to Sept. 14, Sept. 29, 30; discharge estimated on basis of weather records and records for Nehalem River near Foss. 212 PACIFIC SLOPE BASINS IN OREGON

NEHALEM RIVER BASIN

3010. Nehalem River near Poss, Oreg.

Location. Lat 45°42 I 15", long 123°45'20", in NW£ sec. 35, T. 3 N. , R. 9 W. , on right bank a quarter of a mile upstream from Cook Creek and 2.2 miles northeast of Poss. Drainage area. 667 sq mi. Records available . October 1939 to September 1958. Cage.--Water-stage recorder. Datum of gage is 32.60 ft above mean sea level, datum of T929 (Oregon State Highway Department bench mark). Prior to Nov. 11, 1939, staff gage at same site and datum. Average discharge . 19 years, 2,699 cfs (1,954,000 acre-ft per year). Extremes. Maximum discharge during year, 21,200 cfs Dec. 19 (gage height, 14.08 ft); minimum, 70 cfs Aug. 26-28. 1939-58: Maximum discharge, 39,300 cfs Dec. 21, 1955 (gage height, 19.67 ft); mini mum, 54 cfs Sept. 22-24, 1951. Remarks. Records excellent. No regulation. Several small diversions above station for irrigation and domestic supply.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Nov. 13 Nov. 14 to Sept. 30

1.3 3.0 940 1.2 4.0 1,740 1.6 168 4.0 1,800 1.4 112 6.0 4,040 2.0 320 6.0 4,050 1.8 255 9.0 9,300 2.5 590 8.0 7,000 2.5 630 13.0 18,300 3.0 950 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 101 293 4,960 5,690 12,100 6,140 2,360 2.240 522 410 100 84 2 127 267 6,250 4,620 8,960 4,930 2,730 2,000 534 375 100 86 3 153 251 4,670 3,790 6,930 4,030 3,300 1,810 510 350 98 86 4 159 235 3,290 3,140 5,360 3,370 3,360 1,630 480 300 98 86 5 153 224 2,570 2,690 4,310 3,040 3,060 1,500 462 273 98 81 6 150 214 6,260 2,340 3,620 2,760 2,690 1,390 641 250 *98 77 7 156 207 10,100 2,070 3,270 2,640 2,410 1,290 1,220 228 98 75 8 159 197 8,580 2,070 5,120 2,760 2,160 1,200 1,560 *224 95 75 9 159 194. 6,270 2,140 5,330 2,960 2,000 1,120 964 219 95 73 10 153 367 4,540 2,380 7,930 2,990 *2,260 1,060 798 214 93 77 11 144 1,350 3,510 3,550 7,700 2,B80 2,120 1,010 726 206 93 77 12 138 3,800 2,840 5,360 7,800 2,720 1,900 957 678 200 88 75 13 171 6,040 2,350 5,800 9,580 2,540 1,780 915 630 192 88 79 14 214 6,540 2,160 8,410 9,050 2,330 1,770 852 588 182 88 88 15 *190 4,660 1,920 *13,200 8,100 2,160 2,210 810 546 168 86 98 16 165 3,070 1,900 11,700 8,080 2,020 4,280 762 498 164 84 *105 17 162 2,120 2,970 11,500 8,430 1,910 6,000 720 456 164 81 123 18 153 1,670 5,520 9,500 9,130 1,860 6,320 690 420 150 79 129 19 141 1,440 15,800 7,330 *8 , 350 1,750 7,040 690 385 150 79 137 20 133 1,210 18,100 5,820 6,810 1,690 12,600 678 370 150 79 134 21 130 1,070 14,900 4,930 5,440 1,710 10,900 636 360 147 77 134 22 133 943 11,600 4,070 4,910 1,660 9,740 588 345 140 77 126 23 291 859 10,000 4,530 4,510 1,560 8,650 564 320 137 75 118 24 811 792 10,900 8,430 6,990 1.540 7,110 540 320 134 75 115 25 629 756 12,500 8,430 10,800 1,750 5,740 546 335 129 75 123 26 610 *732 15,400 7,110 11,000 1,880 4,800 534 350 126 73 115 27 480 696 14,200 6,300 9,640 1,770 '4,030 *546 360 120 70 110 28 395 792 12,200 9,260 7,820 1,650 3,420 522 355 112 70 107 29 330 774 10,400 11,000 - 1,580 2,920 528 345 110 75 102 30 31 6 938 8,640 13,100 1,600 2,540 546 370 102 100 31 306 7,040 14,500 1,860 528 102 84 Total 7,512 42,701 242,340 204,760 205,070 76,040 132,200 29,402 16,248 5,928 2,650 2,995 Mean 242 1,423 7,817 6,605 7,324 2,453 4,407 948 542 191 85.5 99.8 Cfsm 0.363 2.13 11.7 9.90 11.0 3.68 6.61 1.42 0.813 0.286 0.128 0.150 In. 0.42 2.38 13.51 11.42 11.43 4.24 7.37 1.64 0.91 0.33 0.15 0.17 Ac-ft 14,900 84,700 480,700 406,100 406,800 150,800 262,200 58,320 32,230 11,760 5,260 5,940 Calendar year 1957: Max 19,800 Mln 91 Mean 2,308 Cfsm 3.46 In. 46.95 Ac-ft 1,671,000 Water year 1957-58: Max 18,100 Mln 70 Mean 2,652 Cfsm 3.98 In. 53.97 Ac-ft 1,920,000 Peak discharge (base, 17,000 cfs).--Dec. 19 (7 p.m.) 21,200 cfs (14.08 ft). * Discharge measurement made on this day. WILSON RIVER BASIN 213

3015. Wilson River near Tillamook, Oreg.

Location.--Lat 45°28'40", long 123°43'20", in NW£ sec. 18, T. 1 S., R. 8 W., on right bank 1 mile upstream from North Fork and 6£ miles east of Tillamook. Drainage area. 159 sq mi. Records available. October 1914 to September 1915, August to November 1916, July 1931 to September 1958. Prior to January 1915, monthly discharge only, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 42.13 ft above mean sea level, datum of 1929. Dec. 18, 1914, to Nov. 4, 1916, staff gage at site three-quarters of a mile downstream at different datum. July 30, 1931, to Sept. 30, 1938, staff gage at site 100 ft downstream at datum 0.93 ft higher. Average discharge.--28 years (1914-15, 1931-58), 1,216 cfs 1,300 acre-ft per year), Extremes.--Maximum discharge during year, 16,400 cfs Dec. 19 (gage height, 12.76 ft), from rating curve extended above 10,000 cfs by logarithmic plotting; minimum, 53 cfs Sept. 8. 1914-16, 1931-58: Maximum discharge, 30,000 cfs Dec. 21, 1933 (gage height, 19.28 ft, site and datum then in use), from rating curve extended above 15,000 cfs; min imum, 45 cfs Oct. 15, 16, 17, 18, 1952. Flood in February 1916 reached a stage of 20.8 ft, from floodmarks, site and datum then in use (discharge unknown). Remarks.--Records excellent except those for period of shifting control, which are good. No regulation. Small diversions for domestic use above station. Revisions (water years).--WSP 1014: Drainage area. WSP 1398: 1953.

Rating table, water year 1957-58, except period of shifting control (gage height, In feet, and discharge, In cubic feet per second) 0.2 44 1.5 405 5.0 3,250 .5 95 2.0 635 8.0 1, 600 1.0 227 3.0 1,290 10.0 10,900 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 74 212 1,870 ,970 4,750 ,84O ,140 847 240 173 73 64 2 93 193 2,290 ,660 3,370 ,500 ,330 769 221 159 71 62 3 106 179 1,590 ,390 2,480 ,270 ,510 718 215 146 74 62 4 99 170 1,220 ,210 1,930 ,110 ,340 657 205 139 76 61 5 97 162 1,040 ,070 1,630 ,060 ,140 605 196 129 73 59 6 97 157 4,910 962 1,430 930 1,010 570 326 124 73 58 7 93 151 6,240 872 1,420 962 *910 530 373 119 *73 54 8 91 146 3,630 930 1,410 995 829 499 288 *117 73 53 9 95 141 2,390 936 3,530 943 817 476 253 113 73 54 10 89 25T 1,790 1,030 4,100 930 1,090 445 237 110 71 58 11 86 1,260 1,430 2,020 3,020 917 982 429 227 106 71 59 12 95 3,520 1,170 3,210 3,860 872 878 413 221 102 71 59 13 190 5,010 995 2,390 4,500 817 817 385 212 97 69 64 14 *196 3,650 962 *5,140 3,740 769 775 365 196 95. 69 71 15 149 2,430 855 9,880 3,250 734 982 351 187 91 68 86 16 127 1,630 872 5,550 3,370 696 1,860 330 179 89 68 *82 17 119 1,190 1,600 4,920 3,440 701 2,980 323 167 89 66 89 18 108 982 3,050 3,440 *3,720 745 2,790 306 164 89 66 80 19 102 829 10,600 2,540 2,790 740 3,600 323 159 89 64 93 20 99 718 9,200 2,090 2,200 745 8,520 298 157 87 64 82 21 95 630 6,770 1,780 1,800 787 5,050 288 154 87 62 82 22 122 570 4,850 1,520 1,760 781 3,640 278 146 87 61 78 23 323 517 3,700 1,880 1,64O 745 3,140 270 141 86 61 71 24 817 481 5,440 4,530 2,780 718 2,650 257 164 84 59 69 25 575 454 7,140 3,670 4,040 865 2,150 253 167 82 59 82 26 '389494 *437 7,740 2,720 3,670 969 1,780 247 157 80 58 76 27 421 5,480 2,630 2,890 872 1,490 *250 159 78 58 71 28 323 512 6,060 5,340 2,240 787 1,250 240 162 76 61 68 29 278 441 5,130 5,220 - 740 1,070 234 162 76 69 66 30 264 508 3,460 5,690 745 956 221 184 76 73 64 31 240 2,500 ' 904 227 74 66 Total 6,125 27,952 115,954 94,110 80,760 28,189 58,276 12,404 6,019 3,149 2,093 2,077 Mean 198 932 3,740 3,036 2,884 909 1,943 400 201 102 67.5 69.2 Cfsm 1.25 5.86 23.5 19.1 18.1 5.72 12.2 2.52 1.26 0.642 0.425 0.435 In. 1.43 6.54 27.12 22.01 18.89 6.59 13.63 2.90 1.41 0.74 0.49 0.49 Ac-ft 12,150 55,440 230,000 186,700 160,200 55,910 L15,600 24,600 11,940 6,250 4,150 4,120 Calendar year 1957: Max 10,600 Mln 71 Mean 1,031 Cfsm 6.48 In. 88.02 Ac-ft 746,300 Water year 1957-58: Max' 10,600 Min 53 Mean 1,198 Cfsm 7.53 In. 102. 24 Ac-ft 867,100 Peak discharge (base, 12,000 cfs).--Dec. 19 (5 p.m.) 16,400 cfs (12.76 ft); Jan. 15 (1:30 a.m.) 13,100 cfs (10.96 ft). * Discharge measurement made on this day. Note. Shifting-control method used Dec. 19 to Feb. 27. 214 SILETZ RIVER BASIN

3055. Siletz River at Siletz, Oreg.

Location. Lat 44°42'55", long 123°53'10", in NW£sw£ sec. 11, T. 10 S., R. 10 W., on right bank 1? miles east of Siletz and 5g- miles downstream from Rock Creek. Drainage area.--202 sq mi. Records available. October 1905 to November 1911, January to May 1912, January to June 1924, November 1924 to September 1958. Prior to December 1905 monthly discharge only, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 102.32 ft above mean sea level, datum of "1929. Nov. 26, 1905, to May 4, 1912, staff gage, Jan. 3 to Nov. 5, 1924, chain gage, and Nov. 6, 1924, to Sept. 30, 1938, staff or wire-weight gaga, all at sites within 2\ miles downstream at different datums. Average discharge. 39 years (1905-11, 1925-58), 1,599 cfs (1,158,000 acre-ft per year). Extremes. Maximum discharge during year, 25,700 cfs Dec. 19 (gage height, 20.70 ft), from rating curve extended above 13,000 cfs by logarithmic plotting; minimum, 55 cfs Sept. 7, 8. 1905-12, 1924-58: Maximum discharge, 37,000 cfs Feb. 17, 1949 (gage height, 25.17 ft), from rating curve extended above 15,000 cfs by logarithmic plotting; mini mum observed, 51 cfs Dec. 6, 7, 1929. Maximum discharge known, 40,800 cfs Nov. 20, 1921 (gage height, 31.6 ft, former site and datum), from rating curve extended above 17,000 cfs. Remarks. Records excellent. Slight regulation from log ponds. Small diversions above station for irrigation of not more than 600 acres. Revisions (water years). WSP 754: 1922 (maximum gage height). WSP 814: 1935.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, in cubic feet per second) Oct. 1 to Nov. 13 Nov. 14 to Sept. 30 2.2 65 6.0 1,900 2.0 49 3.5 480 8.0 3,830 2.6 155 8.0 3,830 2.4 125 4.5 990 12.0 9,000 3.0 275 11.0 7,600 2.8 229 6.0 2,000 17.0 17,600 4.0 675 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 75 289 940 2,510 6,930 2,560 1,450 1,110 293 163"189 91 70 2 1ST 264 1,360 2,160 4,380 1,970 1,670 1,000 283 89 67 3 178 244 1,180 1,830 3,120 ,700 2,200 918 267 153 89 63 4 180 231 1,060 1,590 2,390 ,480 2,050 845 257 148 91 62 5 204 222 942 1,390 2,010 ,390 1,810 785 244 141 87 60 6 162 210 4,090 *1,220 1,820 ,220 1,640 730 300 136 85 60 7 155 204 8,400 1,090 1,710 ,270 1,500 685 TOO"360 134 85 57 8 165 198 4,690 1,240 1,770 ,330 1,340 *640 134 *81 55 9 195 192 3,050 1,160 4,540 ,390 1,260 605 263 132 81 59 10 155 343 2,240 1,240 6,260 ,370 1,520 566 254 130 79 62 11 *138 1,480 1,810 2,160 4,560 ,300 1,380 538 254 127 79 69 12 140 2,870 1,500 3,150 6,910 ,200 1,230 512 238 123 78 72 13 437 6,960 1,260 2,620 *7,580 ,120 1,140 480 226 118 76 176 14 373 4,410 1,240 4,080 5,310 1,060 1,060 460 217 118 76 192 15 268 3,110 1,090 8,270 4,460 984 1,040 436 212 114 76 *546 16 225 2,190 1,210 5,420 5,970 918 1,600 412 203 112 74 203 17 204 1,690 1,780 4,910 5,600 930 3,020 393 192 112 74 192 18 183 1,530 3,690 3,740 5,500 960 3,150 378 186 112 72 150 19 168 1,330 16,700 2,900 4,120 894 3,590 428 184 112 70 136 20 158 1,140 14,500 2,610 3,070 870 10,400 375 *181 110 69 132 21 150 *1,000 9,150 2,360 2,440 924 7,870 357 173 107 67 143 22 178 900 6,720 2,040 2,210 912 5,080 339 170 105 67 160 23 337 815 4,900 2,190 1,980 888 3,850 346 168 103 65 130 24 626 755 6,870 4,020 2,770 888 3,090 339 181 103 65 116 25 59T 700 9,180 4,020 4,830 1,610 2,580 350 181 101 65 127 26 576 650 9,480 3,360 4,670 1,830 2,150 318 166 99 65 130 27 480 605 7,100 2,990 3,700 *1,570 1,850 318 170 97 65"63 112 28 408 740 7,840 5,630 2,910 1,340 1,600 324 184 93 103 29 359 610 6,000 6,610 - 1,210 1,400 300 166 §1 *79 99 30 359 585 4,270 6,800 1,230 280 181 87 93 31 324 3,180 8, 990 1J380 286 93ni 78 Total 8,255 36,467 147,422 104,300 113,320 39,558 74,750 15,853 6,654 3,705 2,368 3,496 Mean 266 1,216 4,756 3,365 4,047 1,276 2,492 511 222 120 76.4 117 Cfsm 1.32 6.02 23.5 16.7 20.0 6.32 12.3 2.53 1.10 0.594 0.378 0.579 1.52 6.71 27.14 19.20 20.86 7.28 13.76 2.92 1.23 0.68 0.44 0.64 Ac-'ft 16,370 72,330 292,400 206,900 224,800 78,460 148,300 31,440 13,200 7,350 4,700 6,930 Calendar year 1957: Max 16,700 Min 65 Mean 1,336 Cfsm 6.61 In. 89.78 Ac-ft 967,400 Water year 1957-58: Max 16,700 Min 55 Mean 1,524 Cfsm 7.54 In. 102. 38 Ac-ft 1,103,000 Peak discharge (base, 12,000 cfs).--Dec. 19 (6:30 p.m.) 25,700 cfs (20.70 ft); Dec. 25 (11:30 p.m.) 15,000 cfs (14.55 ft); Apr. 20 (5 p.m.) 12,600 cfs (14.29 ft). * Discharge measurement made on this day. ALSEA RIVER BASIN 215

3061. North Fork Alsea River at Alsea, Oreg.

Location. Lat 44°22'45", long 123°35'40", In SE£ sec. 1, T. 14 S., R. 8 W. , on left bank 0.2 mile southeast of Alsea, 0.3 mile upstream from road bridge, and 0.5 mile above confluence with South Fork. Drainage area. 63.0 sq mi. Records available. --October 1957 to September 1958.

~~Gage. --Water-stage recorder. Datum of gage is 272.31 ft above mean sea level, datum of

Extremes . --Maximum discharge during year, 4,250 cfs Dec. 19 (gage height, 9.12 ft); mini mum, 13 cfs Sept. 6, 7 (gage height, 1.46 ft). Maximum stage known, 13.30 ft December 1955 (discharge about 9,000 cfs, from rating curve extended above 2,500 cfs), from information furnished by local resident. Remarks . Records excellent except those for period of no gage-height record, which are fair. No regulation; some diversions by pumping above and below station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 19 Dec. 19 to Sept. 30 1.5 14 3.5 455 10 1.7 30 4.0 690 2.0 67 5.0 1,250 2.5 155 6.0 1,875 157 3.0 280 8.0 3,310 280 Note. Same as preceding table above 3.0 ft. Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 18 *26 96 451 1,250 565 431 218"230 77 47 26 18 2 2? 25 134 368 834 459 475 86 4T 24 16 3 26 24 109 316 610 387 575 200 80 43 24 16 4 34 24 93 277 479 334 459 191 74 42 25 16 5 34 23 §2. 245 399 316 368 177 70 41 23 15 6 31 23 381 228 347 280 325 169 74 40 *22 14 7 *34 22 927 *212 3TT 286 298 *161 74 38 23 IT 8 38 22 475 212 431 313 268 155 83 38 23 15 9 42 22 292 195 850 350 245 146 74 40 22 17 10 34 46 220 225 966 344 250 140 71 40 22 18 11 29 120 178 368 817 325 235 138 70 38 22 18 12 28 222 153 595 1,360 295 222 133 65 37 21 19 13 42 475 134 600 1,260 271 215 124 63 37 21 45 14 46"65 259 125 540 *1,010 248 202"202 118 60 36 21 32 15 205 114 828 1,020 232 115 57 35 20 29 16 34 149 138 680 1,390 222 253 109 55 36 20 24 17 30 116 594 773 1,120 220 506 104 52 36 20 *26 18 26 114 916 630 1,050 212 504 100 50 36 19 21 19 25 105 2,950 495 800 202 415 106 *51 36 19 21 20 23 *91 *2,780 439 615 200 595 97 50 35 18 19 21 22 79 1,750 399 487 195 580 92 49 34 18 20 22 22 70 1,280 350 451 184 620 91 47 34 18 20 23 26 66 905 495 419 179 690 91 51 33 17 18 24 50 61 1,040 927 780 188 680 96 58 33 17 18 25 50 56 1,260 834 *1,620 280 545 92 55 32 17 21 26 52 55 1,560 640 1,210 289 443 84 50 31 17 19 27 44 52 1,170 518 966 *253 368 84 51 29 16 17 28 36 55 1,200 888 725 225 319 94 50 28 IT 16 29 32 50 932 1,540 - 228 283 80 47 27 18 16 30 29 48 700 1,870 242 253 74 47 ^c"26 22 15 31 27 555 *1 , 890 77 CO 19 Total 1,051 2,705 23,223 19,028 23,613 8,668 11,824 3,886 1,841 1,109 631 593 Mean 33.9 90.2 749 614 843 280 394 125 61.4 35.8 20.4 19.8 Cfsm 0.538 1.43 11.9 9.75 13.4 4.44 6.25 1.98 0.975 0.568 0.324 0.314 In. 0.62 1.60 13.71 11.23 13.94 5.12 6.98 2.29 1.09 0.65 0.37 0.35 Ac-ft 2,080 5,370 46,060 37,740 46,840 17,190 23,450 7,710 3,650 2,200 1,250 1,180 Calendar year 1957: Max - Mln - Mean - Cfsm - In. - Ac-ft Water year 1957-58: Max 2,930 Mln 14 Mean 269 Cfsm 4.27 In. 57.95 Ac-ft 194,700 Peak discharge (base, 2,000 cfs).--Dec. 19 (6 p.m.) 4,250 cfs (9.12 ft); Dec. 26 (10:30 p.m.) 2,020 cfs (6.22 ft); Jan. 51 (6 to 7 a.m.) 2,050 cfs (6.27 ft).______* Discharge measurement made on this day. Note. No gage-height record Oct. 1-31; discharge estimated on basis of weather records and records for Alsea River near Tidewater. 216 ALSEA RIVER BASIN

3062. South Pork Alsea River near Alsea, Oreg.

Location. Lat 44°21'55", long 123°35'55", in ffl^SE^ sec. 12, T. 14 S., R. 8 W., on left bank 0.8 mile above confluence with North Pork and 1.1 mile south of Alsea. Drainage area. 49.5 sq mi. Records available. October 1957 to September 1958. Gage. Water-stage recorder. Altitude of gage is 300 ft (by barometer). Extreme^.--Maximum discharge during year, 2,070 cfs Dec. 20 (gage height, 6.32 ft); minimum, 7.6 cfs Sept. 28. Remarks. Records excellent except those for periods of no gage-height record, which are fair. No regulation; some diversions by pumping above station.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.4 8.0 2.5 120 4.0 590 1.6 19 3.0 230 5.0 1,120 2.0 54 3.5 385 6.0 1,810 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 15 *17 37 267 695 329"396 267 140 55 33 16"17 11.0 2 IF 17 5? 232 550 346 130 65 31 10 3 20 16 44 195 440 279 452 122 62 30 16 10 4 28 IB-15 40 172 340 242 322 117 55 29 16 10 5 28 37 156 280 228 255 112 51 27 15 10 *15 6 24 15 69 144 240"240 202 218 106 53 26 9.5 7 *25 15 260 *134 195 200 *104 52 25 15 9.0 8 28 15 138 134 300 212 178 99 SB-67 26 15 575-8.5 9 30 15 96 124 500 240 164 93 26 14 10 26 26 76 154 600 240 160 90 55 25 14 10 11 22 66 65 303 600 220 150 89 55 25 14 10 12 20 98 56 504 626 200 140 86 53 24 13 10 13 36 195 51 476 650 180 138 81 49 23 13 22 14 32"40 135 50 364 *594 170 126 80 46 22 13 IS 15 110 47 406 675 160 124 77 44 22 12 15 16 26 72 69 364 1,050 150 156 73 41 22 12 14 17 22 57 262 468 805 150 245 71 40 22 12 *14 18 19 63 413 402 700 140 255 70 37 22 12 12 19 17 57 1,080 326 600 140 208 71 *37 21 12 12 20 16 49 *1,760 285 440 130 205 66 36 21 12 12 21 16 *43 1,020 250 350 130 200 63 35 20 12 10 22 16 40 685 220 320 120 242 62 34 20 11 10 23 20 38 480 319 290 120 261 62 38 19 11 10 24 32 35 424 550 550 130 270 67 45 19 11 10 25 32 33 457 456 *1.240 160 252 65 42 19 10 9.5 26 34 32 705 371 900 *170 220 58 37 18 10 9.5 27 30 30 545 318 600 150 192 57 36 18 10 9.0 28 26 33 540 626 492 136 172 65 35 17 10 9.0 29 22 30 480 1,280 142 160 56 34 IT 11 8.5 30 19 28 392 1,390 166 148 5"4"52 33_ 17 13 8.5 31 18 322 *1,100 232 17 12 Total 757 1,413 10,752 12,490 15,667 5,859 6,426 2,538 1,387 703 399 330.5 Mean 24.4 47.1 347 403 560 189 214 81.9 46.2 22.7 12.9 11.0 Cfsm 0.493 0.952 7.01 8.14 11.3 3.82 4.32 1.65 0.933 0.459 0.261 0.222 In. 0.57 1.06 8.08 9.38 11.77 4.40 4.83 1.91 1.04 0.53 0.30 0.25 Ac-It 1,500 2,800 21,330 24,770 31,080 11,620 12,750 5,030 2,750 1,390 791 656 Calendar year 1957: Max - Min - Mean - Cfsm - In. - Ac-It Water year 1957-58: Max 1,760 Min 8.5 Mean 161 Cfsm 3.25 In. 44.12 Ac-ft 116,500 Peak discharge (base, 1,400 cfs). --Dec. 20 (4 a.m.) 2,070 cfs (6.32 ft); Jan. 29 (1 p.m.) 1,770 cfs (5.95 ft); Feb. 25 (4 to 5 a.m.) 1,450 cfs (5.49 ft). ______* Discharge measurement made on this day. Mote. --No gage-height record Oct. 2-6, 8-31, Dec. 7, Feb. 2-11, 18-24, 26, 27, Mar. 9-25; dis chargarge estimated on basis of recorded range in stage, weather records, and records for North Pork Alseasea River at Alsea and Alsea River nernear Tdewater.Tidewater. ALSEA RIVER BASIN 217

3063. Fall Creek near Alsea, Oreg.

Location. La t 44 023'50", long 123°44'50", In S^NEv sec. 35, T. 13 S., R. 9 W., on left bank 2.0 miles upstream from mouth and 8.0 miles west of Alsea. Inflow between gage and measuring section 1.9 mile downstream is Included In records. Drainage area. 29.4 sq ml at measuring section 1.9 miles downstream. Records available. August to September 1958. Gage . Water-stage recorder. Altitude of gage Is 190 ft (from topographic map). Extremes. Maximum discharge during period, 54 cfs Sept. 13 (gage height, 2.07 ft); mini mum, 10 cfs Sept. 6, 7, (gage height, 1.46 ft). Remarks . Records good. No regulation or diversion above station.

Discharge, in cubic feet per second, 1958 Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. 1 a!8 11 7 *15 10 13 14 31 19 14 14 25 12 14 2 alT 11 8 16 11 14 14 20 20 14 12 26 12 12 3 a!7 11 9 15 11 15 14 18 21 14 15 37 12 11 4 a!7 11 10 15 12 16 14 *16 22 14 13 28 12 11 5 a!7 11 11 15 11 17 14 15 33 13 12 29 13 11 6 a!6 !£ 12 14 15 18 14 12 24 12 12 30 13 11 31 12 Tota: 443 395 Mean 14.3 13.2 Cubic feet j>er second per squar 0.486 0.449 Runo: f in U ic lies 0.56 0.50 Runoi f In at re-feet...... 879 783 Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records and records for Alsea River near Tidewater.

3064. Five Rivers near Fisher, Oreg.

Location. Lat 44°20'15", long 123°49'35", in w| sec. 19, T. 14 S., R. 9 W., on left bank at downstream side of county bridge, 500 ft downstream from Lobster Creek, 3.2 miles north of Fisher, and 12 miles west of Alsea. Drainage area. 114 sq mi. Records available. August to September 1958. Gage. Water-stage recorder. Altitude of gage is 130 ft (from topographic map). Extremes. Maximum discharge during period, 115 cfs Sept. 13 (gage height, 2.18 ft); min- Imum, 18 cfs Sept. 6-9 (gage height, 1.55 ft). Remarks. Records excellent. No regulation or diversion above station.

Discharge, In cubic feet per second, 1958 Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. 1 aZ9 23 7 *27 18 13 23 90 19 23 31 25 22 26 2 a29 21 8 26 18 14 23 BT 20 23 30 26 21 26 3 a28 21 9 24 19 15 23 42 21 23 29 27 21 23 4 a28 21 10 24 20 16 23 *34 22 23 29 28 21 23 5 aZ8 20 11 24 22 17 23 37 23 22 27 29 21 23 6 27 19 12 23 26 18 23 34 24 22 24 30 29 22 31 27 - 753 854 24.3 28.5 0.213 0.250 0.25 0.28 1,490 1,690 * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records and records for Alsea River near Tidewater.

534540 O -60 -15 218 ALSEA RIVER BASIN

3065. Alsea River near Tidewater, Oreg.

Location. Lat 44°23'10", long 123°49'50", In NW£NW£ sec. 6, T. 14 S., R. 9 W., on right bank three-quarters of a mile downstream from Grass Creek, 2.3 miles upstream from Scott Creek, and 3.8 miles southeast of Tidewater. Drainage area. 334 sq ml. Records available. October 1939 to September 1958. e. Water-stage recorder. Datum of gage Is 48.16 ft above mean sea level, datum of ^929. Oct. 14 to Nov. 16, 1939, staff gage. Average discharge. 19 years, 1,559 cfs (1,129,000 acre-ft per year). Extremes. Maximum discharge during year, 19,800 cfs Dec. 20 (gage height, 18.04 ft), from rating curve extended above 9,000 cfs on basis of shape of previous curve defined to 20,000 cfs; minimum, 64 cfs Sept. 8, 9 (gage height, 1.29 ft). 1939-58: Maximum discharge, 32,200 cfs Dec. 21, 1955 (gage height, 23.80 ft); mini mum, 56 cfs Sept. 6, 1956 (gage height, 1.20 ft). Maximum stage known, 29.5 ft, from floodmark, shown by old resident, on or about Feb. 3, 1890. Remarks. Records excellent. No regulation. A few small diversions for Irrigation above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Dec. 2O, 21) Oct. 1 to Dec. 19 Dec. 2O to Sept. 30 1.4 5.0 1,720 1.2 4.0 1,150 1.6 128 7.O 3,260 1.4 81 6.O 2,500 2.0 225 9.0 5,400 1.8 166 9.0 5.O5O 2.5 385 12.0 9,700 2.4 365 13.0 1O,10O 3.0 59O 14.0 12,600 3.0 610 18.0 18,4OO Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept.

1 99 148 ~S55398 3,040 7,040 3.580 2,900 1.360 412 2~TO~216 105 85 2 105 139 2,610 4,970 3,040 2,860 1,260 436 1(33 75 3 141 135 581 2,210 3,880 2.6OO 3,710 1,170 436 200 99 71 4 196 128 496 1,930 3,200 2,280 3,1OO 1,080 400 191 99 71 5 196 128 448 1,710 2,760 2,130 2,530 1,020 376 186 99 70 6 173 124 1,O8O 1,540 2,420 1,9OO 2,230 952 372 177 95 68 7 198 -122 4,230 1,400 2,400 1,88O 2,040 9O5 386 169 *94 65 8 214 122 2,620 1,430 2,840 2,090 1.81O *855 420 169 95 64 9 240 122 1,670 1,330 4,900 2,40O 1,660 805 464 169 94 65 10 *188 175 1,240 1,460 5,420 2,260 1,620 770 393 169 90 70 11 159 590 996 2,56O 4,320 2,060 1,510 745 382 166 85 78 12 152 1,040 840 3,86O 6,250 1,860 1,390 720 358 161 83 81 13 279 2,740 730 3,940 *7,17O 1,710 1,320 675 337 156 81 194 14 402 1,800 700 3,390 5,730 1,550 1,260 645 326 151 81 T91 15 249 1,310 644 *4,710 5,190 1,430 1.20O 615 309 148 81 *148 16 190 935 820 4,1OO 7,760 1,350 1,47O 588 298 144 78 123 17 166 710 2,480 4,530 6,480 1,310 2,490 56O 281 141 78 117 18 150 662 5,230 4,010 6,440 1,250 3,06O 542 270 141 78 111 19 139 622 12,200 3,320 4,960 1,160 2,430 565 *257 141 78 101 20 130 554 17.300 2,970 3,940 1,130 2,960 524 253 139 78 95 21 124 *518 10,600 2,750 3,270 1,1OO 3,080 496 246 134 78 97 22 122 448 7,920 2,420 2,980 1,06O 3,12O 480 240 132 76 95 23 143 410 5,53O 2,770 2,760 l.OOO 3,150 480 240 128 73 90 24 288 378 5,190 5,160 3,900 1,060 3,070 496 295 123 71 86 25 273 354 5,450 4,69O 9,150 1,760 2,750 520 295 119 68 90 26 288 329 7,980 3,880 7,O9O 1,920 2,370 460 253 119 68 97 27 231 309 6,090 3,3OO 5,520 *1,61O 2,O9O 448 250 117 68 90 28 193 350 6,280 5,280 4,330 1,400 1,860 472 243 113 68 83 29 173 312 5,480 8,650 - 1,330 1,660 436 229 1O9 73 79 3O 164 291 4,400 1O.5OO 1,600 1,50O 404 223 109 81 76 31 152 3,640 9,990 2,180 4735 107 90

Total 5,917 16,005 123,948 115,440 137,050 54,990 68,2OO 21,456 9,680 4,654 2,588 2,826 Mean 191 534 4.OOO 3,72O 4,89O 1,77O 2,270 692 323 150 83.5 94.2 Cfam 0.572 1.6O 12.0 11.1 14.6 5.30 6.8O 2.07 0.967 0.449 O.25O 0.282 In. 0.66 1.78 13. 8O 12.85 15.26 6.12 7.59 2.39 1.08 0.52 0.29 0.31 Ac-ft 11,740 31,750 245,800 229,000 271,800 109,100 135,300 42,560 19,200 9,23O 5,130 5,610 Calendar year 1957 : Max 17,3OO Mln 74 Mean 1,351 Cfsm 4.04 In. 54.90Ac-ft 978,200 Water year 1957-58 : Max 17,30O Mln 64 Mean 1,542 Cfsm 4.62 In. 62. 65 Ac-ft 1,116,OOO Peak discharge (base, 13.0OO cfs). Dec. 2O (2:3O a.m.) 19,800 cfs (18. 04 ft). * Discharge measurement made on this day. UMPQUA RIVER BASIN 219

3077. Jackson Creek near Tiller, Oreg.

Location. Lat 42 057'15", long 122°49 I 40", in SWvNE^ sec. 21, T. 30 S., R. 1 W., on right bank 0.5 mile upstream from Chapman Creek, 0.8 mile downstream from Beaver Creek, and 6% miles northeast of Tiller. Records include flow in Chapman Creek. Drainage area. 152 sq mi, including Chapman Creek basin. Records available. October 1956 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,240.26 ft above mean sea level (levels oy Douglas County Water Resources Survey). Extremes. Maximum discharge during year, 6,750 cfs Jan. 29 (gage height, 10.13 ft); minimum, 17 cfs Sept. 8 (gage height, 0.63 ft). 1955-58: Maximum discharge, 10,600 cfs Dec. 22, 1955 (gage height, 13.55 ft), from rating curve extended above 5,100 cfs by slope-area measurement of peak flow; minimum daily, 12 cfs Oct. 2-4, 1955. Remarks. Records good except those for period of no gage-height record, which are fair. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 19 Dec. £0 to Sept. 30 0.8 40 £.5 £95 16 3.0 435 1.0 54 3.0 475 £6 4.0 9£0 1.5 99 4.0 960 39 5.0 1,550 2.0 175 5.0 1,590 87 6.0 £,360 169 9.0 5,450 2.5 £84 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 50 46 122 564 962 738 645 362 205 100 31 20 £ 52 45 118 568 766 610 738 374 217 ~95103 3T 19 3 118 44 110 500 660 529 675 378 n.oio 30 19 4 148 43 105 421 546 457 516 371 744 87 30 19 5 145 42_ 99 371 496 418 424 384 461 80 30 ii 6 allo 42 172 362 5"oo442 381 397 371 516 75 29 18 7 al80 42 471 365 356 371 362 655 70 29 18 8 a!50 44 367 *350 645 332 344 390 980 66 28 18 9 al2o 43 273 330365" 610 327 327 424 744 64 28 23 10 *97 57 227 680 318 362 457 521 60 27 21 11 83 77 195 387 600 302 407 457 410 60 27 20 12 74 102 175 722 660 292 435 371 353 56 25 20 13 125 1,130 161 838 1,090 289 484 310 300 54 25 38 14 193 1.250 147 625 1,760 279 472 289 259 52 25 38 15 130 618 140 810 5.290 264 421 302 233 52 24 27 16 101 370 152 766 3,120 249 *421 338 208 63 24 24 17 84 273 518 832 1,980 237 516 381 186 54 24 23 18 74 805 745 744 1,470 224 578 4OO 171 56 24 22 19 66 867 1,420 591 1,240 532"219 496 394 160 51 23 20 £0 61 520 1,770 516 1,100 488 374 150 47 23 20 £1 58 374 2,490 492 904 439 596 356 145 45 23 20 £2 55 289 1,160 414 772 442 788 338 130 44 24 21 23 54 *242 766 492 695 421 690 330 145 43 22 22 24 56 222 848 838 1,180 500 568 332 132 41 22 20 25 56 202 1,050 706 2,360 480 496 287 122 40 20 *20 26 64 181 1,420 564 *1,630 504 439 266 112 38 20 20 27 58 162 1,440 512 1,200 457 394 249 112 37 20 19 28 54 152 2,180 2,170 932 407 362 235 104 36 20 19 29 51 138 1,510 4,650 - 397 341 203 99 34 20 18 30 49 130 998 2,400 424 344 184 108 *33 20 18 31 47 716 1 350 516 T9T 32 20 Total 2,763 8,552 22,065 25,595 32,290 12,060 14,535 10,466 9,692 1,768 768 642 Mean 89.1 285 712 826 1,153 389 484 338 323 57.0 24.8 21.4 Cfsra 0.586 1.88 4.68 5.43 7.59 2.56 3.18 2.22 2.12 0.375 0.163 0.141 In. 0.68 2.09 5.40 6.26 7.90 2.95 3.56 2.56 2.37 0.43 0.19 0.16 Ac-ft 5,480 16,960 43,770 50,770 64,050 23,920 28,830 20,760 19,220 3,510 1,520 1,270 Calendar year 1957: Max 3,830 Min 24 Mean 332 Cfsra 2.18 In. 29.63 Ac-ft 240,200 Water year 1957-58: Max 4,63o Min 18 Mean 387 Cfsm 2.55 In. 34.55 Ac-ft 280,100 Peak discharge (base, 2.5OO cfs). Dec. 21 (l a.m.) 3.74O cfs (7.44 ft); Dec. 27 (11 p.m.) 2,710 cfs (6.39 ft); Jan. 29 (12:3O p.m.) 6,750 cfs (1O.13 ft); Feb. 16 (l a.m.) 3,83O cfs (7.53 ft); Feb. 25 (1 a.m.) 2,97o cfs (6.67 ft).______* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for South Umpqua River at Tiller. 220 UMPQUA RIVER BASIN

3080. South Umpqua River at Tiller, Oreg.

Location. Lat 42°55'50", long 122°56'50", in NE£ sec. 33, T. 30 S., R. 2 W., on right bank 0.3 mile upstream from Elk Creek, 0.4 mile downstream from Salt Creek, and 0.4 mile east of Tiller. Drainage area. 449 sq mi. Records available . October 1910 to December 1911, October 1939 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Prior to December 1911, published as South Fork of Umpqua River at Tiller. Gage. Water-stage recorder. Datum of gage is 991.8 ft above mean sea level, datum of 1929 (from river-profile survey). Prior to Oct. I, 1939, staff gage at site 0.2 mile downstream at different datum. Average discharge. 20 years, 1,056 cfs (764,500 acre-ft per year). Extremes.--Maximum discharge during year, 21,800 cfs Jan. 29 (gage height, 15.30 ft, referred to outside gage); minimum. 48 cfs Sept. 7. 1910-11, 1939-58: Maximum discharge, 46,400 cfs Dec. 11, 1956 (gage height, 22.7 ft, referred to outside gage); minimum observed, 20 cfs Sept. 3, 4, 1911. Remarks. Records good except those for periods of no gage-height record, which are fair. No regulation. Small diversions above station for irrigation. Revisions (water years). WSP 1448: 1911(M), 1912, drainage area.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) 0.9 3.0 870 1.0 5.0 2,400 1.2 100 7.0 4,600 1.5 196 10.0 9,400 2.0 390 14.0 18,300 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 alSO 97 310 1,950 3,500 2,200 1,950 930 535 278 95 59 2 a!70 95 310 1,950 2,730 1,830 2,150 942 575 306 9? 57 3 a300 92 290 1,770 2,300 1,610 2,030 948 *2,010 274 86 57 4 488 89 274 1,480 1,920 1,380 1,570 906 1,870 251 84 57 5 479 86 259 1,340 1,690 1,290 1,320 930 1,160 236 84 55 6 358 86 501 1,330 1,470 1,170 1,220 906 1,170 221 84 51 7 575 84 2,780 1,340 1,460 1,080 1,130 864 1,670 207 81 50 8 346 86 1,910 *1,270 1,740 1,030 1,030 900 2,450 196 78 BT 9 *286 86 1,220 1,170 1,700 1,000 966 990 1,990 189 76 61 10 255 106 912 1,180 2,150 1,010 1,010 1,040 1,410 182 73 67 11 203 210 740 1,400 1,930 990 1,080 1,080 1,110 176 71 59 12 176 278 630 3,070 2,790 954 1,130 918 930 169 71 61 13 314 4,210 555 3,430 3,980 960 1,240 770 780 162 69 109 14 545 4,150 492 2,380 5,730 930 1,190 695 685 156 69 -SB-165 15 378 2,130 454 3,060 11,900 870 1,060 690 610 152 71 16 286 1,220 462 2,860 15,100 815 *1,060 750 545 165 69 76 17 228 870 1,270 3,020 7,380 770 1,420 837 492 152 71 69 18 193 2,590 2,400 2,720 4,780 740 1,980 888 454 149 69 67 19 165 2,540 5,200 2,130 3,740 730815" 1,610 900 434 140 67 63 20 149 1,490 11,500 1,810 3,160 1,570 842 410 136 65 61 21 136 1,060 12,400 1,770 2,550 1,190 2,130 805 398 130 65 59 22 127 805 5,030 1,500 2,220 1,200 2,570 775 362 127 71 a59 23 121 *675 2,970 1,610 2,050 1,130 5,270 770 386 124 73 a59 24 121 600 a3,000 2,860 2,860 1,320 1,900 790 382 121 67 a59 25 118 530 a3,500 2,720 5,700 1,340 1,610 695 354 112 61 *59 26 130 474 a5,000 2,120 *4,440 1,490 1,360 640 322 109 59 63 27 124 426 a5,500 1,850 3,490 1,320 1,190 605 314 103 59 61 28 112 402 a9,000 8,180 2,730 1,180 1,050 595 298 100 59 59 29 106 358 a6 , 000 16,200 - 1,140 966 506 282 97 59 57 30 100 330 a3,500 1,240 924 466 270 *97 55 31 100 2,490 4*930 1,B30 497 97 59 Total 7,339 26,255 90, 859 92,790 105,190 36,254 44,686 24,870 24,658 5,114 2,216 1,980 Mean 237 875 2,931 2,993 3,757 1,169 1,490 802 822 165 71.5 66.0 Cfsm 0.528 1.95 6.53 6.67 8.37 2.60 3.32 1.79 1.83 0.367 0.159 0.147 In. 0.61 2.17 7.53 7.69 8.71 3.00 3.70 2.06 2.04 0.42 0.18 0.16 Ac-ft 14,560 52,080 180,200 184,000 208,600 71,910 88,630 49,330 48,910 10,140 4,400 3,930 Calendar year 1957: Max 13,100 Mln 48 Mean 1,139 Cfsm 2.54 In. 34.45 Ac-ft 824,800 Water year 1957-58: Max 16,200 Mln 50 Mean 1,266 Cfsm 2.82 In. 38.27 Ac-ft 916,700 Peak discharge (base, 7,000 cfs).--Dec. 21 (l a.m.) 19,600 cfs (14.49 ft); Dec. 28 (about 1 a.m.) about 10,000 cfs; Jan. 29 (l p.m.) 21,800 cfs (15.30 ft); Feb. 16 (2:30 a.m.) 16,100 cfs (15.10 ft).______* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for station near Brockway and Jackson Creek near Tiller. UMPQUA RIVER BASIN 221

3085. Elk Creek near Drew, Oreg.

Location Lat 42°53'25", long 122°55'00", in SW£ sec. 11, T. 31 S., R. 2 W., on right bank 100 ft downstream from Dixon Creek, a quarter of a mile upstream from Drew Creek, 1-J miles northwest of Drew, and 3? miles southeast of Tiller. Drainage area.--54.4 sq mi. Records available. September 1954 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,279.25 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 4,630 cfs Jan. 29 (gage height, 8.64 ft), from rating curve extended above 1,700 cfs as explained below; minimum, 1.1 cfs Sept. 7 (gage height, 1.37 ft). 1954-58: Maximum discharge, 7,500 cfs Dec. 21, 1955 (gage height, 10.34 ft), from rating curve extended above 1,700 cfs on basis of slope-area measurement of peak flow; minimum, 0.9 cfs Sept. 6, 7, 1955 (gage height, 0.89 ft). Maximum stage known, 11.8 ft, from floodmarks, probably for flood in January or November 1953 (discharge, about 11,000 cfs). Remarks. Records good. No regulation. Several diversions for irrigation above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Jan. 28 Jan. 29 to Sept. 30 1.5 3.8 3.0 187 1.4 1.2 2.7 101 1.6 6.9 3.5 320 1.5 3.0 169 1.8 17 4.0 490 1.6 3.5 309 2.1 39 5.0 1,000 1.8 4.0 490 2.4 74 6.0 1,770 2.1 5.0 1,000 2.7 124 2.4 7.0 2,670 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 17 7.4 18 143 300 198 360 53 22 15 2.2 1.2 2 12 6.6 17 158 236 156 438 46 28 15 2.2 1.2 3 28 6.2 16 132 219 155 557 41 *302 15 3^2. 1.2 4 34 6.2 15 110 174 111 225 58 rrr 12 2.6 1.2 5 35 5.8 15 93 156 99 169 35 87 11 2.2 1.2 6 42 5.5 17 80 139 91 156 35 92 9.9 2.1 1.2 7 50 BTS 22 74 154 81 139 51 105 9.5 2.1 1.2 8 29 6.2 21 *70 214 80 128 28 91 8.2 2.0 1.2 9 *20 5.8 19 649§" 266 81 117 27 89 8.2 2.0 1.6 10 16 17 17 364 78 135 26 68 7.4 1.9 1.7 11 13 29 16 169 250 72 142 25 55 7.4 1.8 1.5 12 11 28 15 473 427 70 155 25 46 6.6 1.7 1.6 13 14 331 14 388 381 76 123 25 59 6.2 1.7 2.2 14 23 385 13 238 442 69 105 22 55 5.8 1.6 5.6 15 20 197 13 201 1,050 64 89 21 29 6.2 1.7 271 16 17 110 17 176 1,010 59 *74 19 26 9.1 1.7 2.0 17 14 80 331 166 538 54 81 18 25 7.0 1.7 1.9 18 12 121 338 143 589 49 86 17 21 6.6 1.7 1.8 19 10 128 371 117 547 48"46 70 16 20 5.4 1.6 1.7 20 8.7 95 704 105 285 64 16 21 4.6 1.5 1.7 21 8.3 70 995 97 219 78 69 16 18 4.6 1.7 1.7 22 7.4 53 350 80 174 87 159 15 16 4.2 2.0 1.8 23 7 . 4 *43 238 278 144 87 179 21 18 5.8 1.7 2.0 24 8.3 35 223 388 690 92 159 19 18 5.8 1.6 1.9 25 9.2 30 238 252 1,010 109 125 16 17 5.6 1.5 1.8 26 14 26 424 189 *518 117 105 15 16 5.4 1.5 1.7 27 13 23 411 154 554 99 91 15 16 3.2 1.5 1.6 28 11 22 558 1,140 259 86 76 18 15 2.8 1.5 1.4 29 9.2 20 396 *2,150 - 98 66 15 14 2.4 1.3 1.4 30 8.3 19 258 162 59 16"14 T4 *2. 4 1.2 1.4 31 7.8 185 434 571 2.2 172 Total 529.6 1,917.2 6,265 9,124 10,689 5,105 4,259 740 1,552 212.5 55.5 50.0 Mean 17.1 63.9 202 294 582 100 141 23.9 51.1 6.85 1.79 1.67 Ao-ft 1,050 3,800 12,430 18,100 21,200 6,150 8,410 1,470 5,040 421 110 99 Calendar year 1957: Max 1,620 Mln 1.6 Mean 85.9 Ac-ft 62,180 Water year 1957-58: Max 2,150 Mln 1.2 Mean 105 Ac-ft 76,280 Peak discharge (base, 1,000 cfs). Dec. 20 (11 p.m.) 2,f"50 cfs (6.36 ft); Jan. 29 (9:30 a.m. 4,630 cfs (8.64 ft); Feb. 15 (11 p.m.) 1,670 cfs (5.88 ft); Feb. 24 (10:30 p.m.) 2,030 cfs (6.31 ft). * Discharge measurement made on this day. 222 UMPQUA RIVER BASIN

3087. Days Creek at Days Creek, Oreg.

Location. Lat 42«58'55", long 123°08'55", in NE£ sec. 10, T. 30 S., R. 4 W., on down stream side of bridge 20 ft upstream from Wood Creek, 1 mile northeast of town of Days Creek, and If miles upstream from mouth. Drainage area. 55.3 sq mi. Records available. October 1955 to September 1958. Gage. Wire-weight gage and crest-stage indicator; gage read once or twice daily. Altitude of gage is 810 ft (from topographic map). Extremes. Maximum discharge during year, 1,860 cfs Jan. 29 (gage height, 7.95 ft, from rioodmarks), from rating curve extended above 660 cfs as explained below; minimum observed, 1.5 cfs Aug. 28, Sept. 5, 7, 8, 1955-58: Maximum discharge, 3,450 cfs Feb. 21, 1956 (gage height, 11.24 ft), from rating curve extended above 660 cfs on basis of slope-area measurement of peak flow; minimum observed, 0.3 cfs Sept. 12, 1957. Remarks. Records fair. No regulation. Several diversions for irrigation above station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) (Shifting-control method used Jan. 28-3O, Sept. 12-25) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30 0.9 2.5 2.4 108 0.4 1.4 1.9 54 1.0 3.9 3.0 223 .7 2.6 2.4 117 1.1 5.9 4.0 465 ,9 4.9 3.0 232 1.3 12 5.0 820 1.1 9.9 4.0 498 1.6 27 6.0 1,220 1.4 21 5.0 838 2.0 57 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 6.5 2.9 6.2 77 157 120 140 19 9.9 9.9 2.0 al.6 2 3.9 a2.7 6.8 63 110 85 144 20 12 S7? T5 1.6 3 22 279-2.5 5.9 46 88 78 10~8~151 TT 41 8.4 1.9 1.6 4 28 5.5 39 62 60 15 *36 6.4 1.9 1.6 5 25 3.2 4.9 33 46 52 84 15 26 5.5 2.0 1.5 6 14 2.9 7.9 28 38 52 a70 16 22 4.5 1.9 1.6 7 18 2.9 26 24 36 43 56 13 43 4.2 2.0 1.5 *23 8 13 3.5 28 34 48 48 13 ~5l166 4.3 1.8 1.5 9 7.4 3.3 22 20 30 58 41 13 4.2 1.9 1.6 10 *6.5 5.3 19 2ff m 57 35 11 54 3.9 1.9 1.6 11 5.7 9.5 17 29 53 59 32 all 38 3.5 1.9 1.6 12 a5.5 10 13 111 71 54 30 9.9 31 3.0 1.8 1.6 13 a!2 177 12 197 97 50 27 9.6 25 2.7 1.8 2.0 14 18 ~58187 all 125 311 45 26 9.0 aZO 2.6 1.8 2.5 15 12 9.2 108 510 41 22 a9.0 17 2.5 1.8 TX 16 9.2 52 16 78 514 36 *ZZ a8.5 16 3.1 1.7 1.8 17 5.9 30 177 84 25? 34 22 8.2 13 2.5 1.8 1.8 18 5.9 80 227 61 151 30 24 6.6 11 2.6 1.8 1.8 19 a5.5 103 350 54 125 28 21 6.6 11 2.3 1.7 1.8 20 aS.O 56 386 45 91 26_ 20 6.4 9.9 2.3 al.6 1.8

21 4.5 37 2SO~808 49 73 28 19 5.7 9.0 2.1 1.6 1.8 22 4.3 26 37 60 26 47 5.5 7.9 2.5 1.6 1.9 23 3.8 *21 154 41 54 30 66 7.9 a8.5 2.5 1.6 1.9 24 3.6 a!7 154 80 243 30 60 a6.5 9.0 2.5 al.6 1.9 25 3.9 15 alSO 77 514 31 50 a5 .5 7.3 1.8 1.6 1.9 26 3.9 13 171 69 *393 30 a40 5.1 6.6 2.0 1.6 1.8 27 3.6 8.8 211 59 277 a30 29 4.8 7.3 2.0 1.6 1.8 28 3.6 a8.5 369 429 180 3O 30 574 6.6 1.9 T76-1.5 1.8 29 3.6 7.9 217 "1.020 28 24 5.5 6.2 1.9 1.7 3 2 1 ,8 1 fi 30 6.8 144 405 59 24 4.8 5.7 1.6 * 31 372 98 234 151 5.5 1.9 1.6 Tota: 273.2 985.6 4,086.4 3,765 4,636 1,529 1,508 302 .0 769.9 111.2 54.5 52.7 Mean 8.81 32.9 132 121 166 49.3 50.3 9.74 25.7 3.59 1.76 1.76 Aoft 542 1,950 8,110 7,470 9,200 3,030 2,990 599 1,530 221 108 1O5 Calendar year 1957: Max 808 Min 0.3 Mean 45 .3 Ac-ft 32,800 Water year 1957-58: Max 1,020 Min 1.5 Mean 49.5 Ac-ft 35,860 * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records and records for North Myrtle Creek near Myrtle Creek. UMPQUA RIVER BASIN 223

3090. Cow Creek near Azalea, Oreg.

Location. Lat 42°49'30n , long 123°10'40", in sec. 4, T. 32 S., R. 4 W., on right bank three-quarters of a mile upstream from Whitehorse Creek and 4f miles (revised) north east of Azalea. Drainage area. 78.0 sq mi. Records available. April 1926 to September 1928 (no winter records), April 1929 to Decem- ber 1931, April 1932 to September 1958. Gage. Water-stage recorder. Altitude of gage is 1,685 ft (by barometer). Prior to July 19, 1949, staff gage at same site and datum. Average discharge. 28 years (1929-31, 1932-58), 109 cfs (78,910 acre-ft per year). Extremes. Maximum discharge during year, 4,110 cfs Jan. 29 (gage height, 10.62 ft); min- Imum, 11 cfs Sept. 30. 1926-58: Maximum discharge. 5,920 cfs Oct. 29, 1950 (gage height, 14.37 ft), from rating curve extended above 2,000 cfs on basis of slope-area measurement of peak flow; minimum observed, 4 cfs Sept. 9-19, 1929, Aug. 26-28, 1931, Aug. 21 to Sept. 6, 1934. Remarks. Records good. No regulation. Diversions for irrigation of 400 acres above sTalfion. Revisions (water years). WSP 984: 1933-36. WSP 1154: 1946(M), 1948(M). WSP 1448: Drainage area.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 10 1.5 88 4.0 770 19 2.0 175 6.0 1,580 1.0 34 3.0 430 8.0 2,600 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 32 20 25 181 518 397 478 98 48 43 18 13 2 24 19 25 185 412 332 72! 92 57 51 18 12 3 45 19 24 159 352 292 560 87 217 40 2! 12 4 48 19 23 135 295 255 367 84 139 37 18 12 5 43 19 23 120 265 235 292 82 *87 34 18 12 6 42 18 25 113 240 211 260 *79 80 32 18 12 7 55 19 28 110 232 197 238 76 114 32 17 12 8 34 20 26 105 258 187 218 74 179 31 17 13 9 28 20 25 *102 299 171 209 71 123 30 17 15 10 *25 28 23 141 442 163 225 69 96 29 16 *13 11 23 49 22 238 322 155 240 70 84 28 16 14 12 22 38 22 653 578 149 248 70 83 28 16 14 13 28 221 22 511 487 141 250 64 73 27 16 16 14 39 298 21 320 525 132 222 60 67 27 16 17 15 36 137 21 278 1,490 126 195 59 61 27 16 14 16 27 76 33 248 1,660 121 177 56 57 28 16 14 17 25 57 311 232 918 116 *181 55 53 27 16 14 18 23 60 409 205 682 112 179 53 51 26 16 13 19 22 65 364 177 620 107 151 52 50 25 16 13 20 21 56 628 165 481 107 139 51 53 25 15 13 21 20 49 1>450'497 155 388 121 135 50 47 24 14 13 22 20 41 133 330 121 177 49 45 24 14 14 23 20 36 282 366 292 141 169 58 45 22 14 14 24 23 *32 260 460 1,040 141 149 54 46 22 14 14 25 27 31 275 300 1,640 153 137 51 42 22 14 13 26 28 29 504 245 875 163 128 48 41 21 14 *13 27 24 28 430 201 *620 147 120 49 42 20 12 28 22 28 648 1,150 484 133 113 54 41 20 if 12 29 22 26 448 2.590 - 175 108 45 38 *19 13 12 30 20 25 295 1,210 278 102 12 38 19 13 12 31 20 220 742 514 46 19 13 Total 888 1,583 7,389 11,930 16,745 5,853 6,888 1,948 2,197 859 486 397 Mean 28.6 52.8 238 385 598 189 230 62.8 73.2 27.7 15.7 13.2 Cfsm 0.367 0.677 3.05 4.94 7.67 2.42 2.95 0.805 0.938 0.355 0.201 0.169 In. 0.42 0.75 3.52 5.69 7.98 2.79 3.28 0.93 1.05 0.41 0.23 0.19 Ac-ft 1,760 3,140 14, 660 23,660 33,210 11 , 610 13,660 3,860 4,360 1,700 964 787 Calendar year 1957: Max 2,070 Mln 9.1 Mean 116 Cfsm 1.49 In. 20.11 Ac-ft 83,680 Water year 1957-58: Max 2,590 Min 12 Mean 157 Cfsra 2.01 In. 27.24 Ac-ft 113,400 224 UMPQUA RIVER BASIN

3095. West Fork Cow Creek near Glendale, Oreg.

Location. Lat 42°48'10", long 123°37'10", In NW^SW^ see. 11, T. 32 S., R. 8 W., on left bank 1 mile upstream from mouth and 11 miles northwest of Glendale. Drainage area. 83.6 sq mi. Records available. August 1955 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,035.14 ft above mean sea level, datum of ^929, supplementary adjustment of 1947. Extremes.--Maximum discharge during year, 8,200 cfs Dec. 20 (gage height, 16.46 ft); min- ffiumT 7.6 efs Sept. 30. 1955-58: Maximum discharge, 10,600 cfs Dee. 21, 1955 (gage height, 18.60 ft), from rating curve extended above 4,300 efs on basis of slope-area measurement of peak flow; minimum, 7.1 efs Sept. 7-9, 1955. Remarks. Records good. No regulation or diversion above station. Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) (Shifting-control method used Oct. 1 to Dec. 18, Dec. 31 to Jan. 29)

3.6 4.5 60 8.0 1,250 3.8 5.0 150 10.0 2,550 4.0 21 6.0 400 13.0 5,150 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 24 42 50 457 1,150 628 1,350 125 54 47 15 8.7 2 23 39 49 576 814 470 1.650 T2T 64 56 15 8.7 3 34 36 45 474 628 382 1,350 110 -89118 41 14 8.5 4 69 34 43 375 509 320 872 103 36 13 8.5 5 161 33 42. 305 576 288 696 98 *67 33 13 8.5 6 134 31 45 245 668 260 600 91 72 31 13 8.7 7 152 30 72 222 926 235 530 86 66 29 12 8.7 8 83 30 70 210 1,660 230 492 85 67 28 12 11 9 61 30 60 *190 2,020 250 484 82 68 28 12 14 10 *55 86 55 388 1,870 245 506 92 66 26 12 12 11 49 157 50 760 1,210 245 495 80 60 25 12 13 12 46 142 48 1,350 1,990 240 467 76 57 24 11 12 13 246 1.040 45 1,210 2,490 220 417 72 52 24 11 19 14 155 1,000 43 732 1,540 208 350 68 50 23 11 19 15 107 572 42 612 3,620 192 300 67 46 23 11 12 16 77 360 155 523 3,680 182 268 65 44 24 11 10 17 61 275 856 457 2,500 168 *300 65 43 24 11 9.7 18 54 316 1,190 395 2,710 158 302 64 42 23 11 9.4 19 48 270 1,420 350 1,830 150 258 64 41 23 11 8.7 20 42 224 4,620 332 1,100 168 238 60 40 22 10 8.5 21 39 176 * ,430 365 732 420 225 59 38 21 10 8.5 22 37 142 ,740 340 520 492 250 57 37 20 10 8.5 23 44 117 ,180 608 400 362 258 61 36 20 9.7 8.5 24 77 *101 ,300 1,510 3,530 308 240 72 37 19 9.4 8.5 25 157 90 ,180 975 5.720 380 225 60 35 18 9.4 8.5 26 146 81 1,360 672 1,960 474 208 56 34 17 9.0 *8.7 27 99 72 1,210 537 *1,270 385 192 54 35 17 9.0 8.5 28 74 66 1,690 1,800 868 310 172 55 35 16 8^7. 8.2 29 61 59 1,130 4.670 328 158 52 34 *15 8.7 7.9 30 54 55 764 2,650 620 142 5~2~50 33 15 8.7 7.9 31 48 572 1,910 1^350 14 8.7 Total 2,551 5,760 25,556 26,200 46,491 10,668 13,995 2,292 1,560 782 342.3 302.3 Mean 82.3 190 824 845 1,660 344 466 73.9 52.0 25.2 11.0 10.1 Cfsm 0.984 2.27 9.86 10.1 19.9 4.11 5.57 0.884 0.622 0.301 0.132 0.121 In. 1.13 2.54 11.37 11.66 20.68 4.75 6.23 1.02 0.69 0.35 0.15 0.13 Ac-ft 5,060 11,320 50, 690 51,970 92,210 21,160 27,760 4,550 3,090 1,550 679 600 Calendar year 1957: Max 4,620 Min 7.7 Mean 265 Cfsm 3.17 In. 42.97 Ac-ft 191,600 Water year 1957-58: Max 4,670 Mln 7.9 Mean 374 Cfsm 4.47 In. 60.70 Ac-ft 270,600 Peak discharge (base, 2,500 cfs). Dec. 20 (8 p.m.) 8,200 cfs (16.46 ft); Jan. 29 (8 a.m.) 6,950 cfs (14.90 ft); Feb. 9 (10 p.m.) 2,690 cfs (l0.20 ft); Feb. 15 (10 p.m.) 7,300 cfs (15.27 ft); Feb. 24 (10 p.m.) 6,880 cfs (14.82 ft). Discharge measurement made on this day. UMPQUA RIVER BASIN 225

3100. Cow Creek near Riddle, Oreg.

Location. Lat 42°55'25", long 123°25'40", in NE^ sec. 32, T. 30 S., R. 6 W., on left bank 1,500 ft upstream from Council Creek and 3? miles southeast of Riddle. Drainage area. 456 sq mi. Records available. September 1954 to September 1958. Gage. Water-stage recorder. Datum of gage is 682.60 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Extremes . Maximum discharge during year, 26 600 cfs Feb. 24 (gage height, 21.92 ft); mini mum, 26 cfs Sept. 3 (gage height, 1.26 ft). 1954-58; Maximum discharge, 38,200 cfs Dec. 26, 1955 (gage height, 27.35 ft); mini mum, 23 cfs Sept. 8, 1955; minimum gage height, 1.26 ft Sept. 8, 1955, Sept. 3, 1958. Maximum discharge known, 41,100 cfs Oct. 29, 1950 (gage height, about 28.5 ft, present site and datum), from slope-area measurement. Remarks. Records good. Many small diversions for Irrigation above station.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) (Shifting-control method used June 4-9)

1.3 30 3.0 830 1.5 63 5.0 2,850 1.7 112 9.0 7,550 2.0 216 13.0 12,900 2.5 475 18.0 20,400 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 99 115 162 1,560 4,800 3,110 5,760 558"561 216 162 54 33 2 86 109 162 1,950 3,420 2,510 6,420 275 130"204 54 33 3 15? 102 156 1,780 2,610 2,100 6,510 475 427 50 30 4 180 99 145 1,450 2,040 1,780 *3,940 463 *638 156 49 32 5 366 96 142 1,180 2,056 1,590 2,900 433 433 133 45 32 6 305 94 149 990 2,210 1,490 2,450 410 350 127 49 33 7 445 94 184 870 2,460 1,330 2,110 398 320 115 49 33 8 3750" 91 204 806 3,840 1,280 1,860 388 433 109 49 33 9 216 89 192 736 4,900 1,200 1,770 376 501 104 47 38 10 162 *i5T 176 1/250" 5,500 1,190 1,780 360 421 104 47 44 11 139 382 169 3,700 3,800 1,160 1,760 350 355 104 45 44 12 127 335 166 5,690 5,140 1,130 1,660 355 315 99 45 45 13 260 1,890 156 6,290 5,400 1,090 1,560 340 290 89 44 54 14 410 2,740 149 3,470 4,610 999 1,350 320 265 81 44 ~SS74 15 280 1,770 142 2,500 *9,890 958 1,150 310 238 81 42 16 208 982 *208 2,030 16,400 910 1,040 300 220 86 40 56 17 166 687 2,360 1,760 8,440 846 1,020 280 204 89 40 56 18 142 766 4,890 1,480 8,200 790 1,090 265 188 84 40 54 19 127 708 3,960 1,300 6,280 736 934 *275 180 81 39 50 20 115 617 9,700 1,180 4,410 747 846 251 184 77 38 49 21 107 507 16,600 1,270 3,220 1,150 798 251 176 77 38 49 22 104 404 6,590 1,150 2,520 1,420 846 234 159 74 36 50 23 104 345 3,850 1,600 2,090 1,190 926 256 152 72 34 52 24 159 300 3,820 5,140 13,000 1,090 878 265 152 72 34 52 25 238 275 3,740 3,750 18,800 1,190 798 251 149 70 36 50 26 310 242 4,630 2,600 9,340 1,440 743 234 142 68 34 45 27 233 216 3,970 1,940 5,810 1,360 694 220 139 65 33 44 28 188 200 5,340 5,570 4,080 1,170 729 229 142 65 33 42 29 156 188 4,030 20, 100 - 1,210 631 220 136 *63 32 *40 30 139 176 2,710 12,600 2, 810 582 fl2"208 133 59 3T 39 31 127 1,960 7,800 5,860 56_ 34 Total 6,100 14,740 80,812 105,492 165,260 46,832 55,535 99,998 7,933 3,006 1,287 1,349 Mean 197 491 2,607 3,403 5,902 1,511 1,851 323 264 97.0 41.5 45.0 Ac-ft 12,100 29,240 160,300 209,200 327,800 92,890 110,200 19,830 15,730 5,960 2,550 2,680 Calendar year 1957: Max 17,200 Min 27 Mean 875 Ac-ft 633,700 Water year 1957-58: Max 20,100 Min 30 Mean 1,365 Ac-ft 988,500 Peak discharge (base, 10,000 cfs). Dec. 21 (1 a.m.) 22,900 cfs (19.57 ft)j Jan. 29 (2 p.m.) 26,000 cfs (21.53 ft),- Feb. 16 (l a.m.) 23,800 cfs (20.15 ft)j Feb. 24 (12 p.m.) 26,600 cfs (21.92 ft).______* Discharge measurement made on this day. 226 UMPQUA RIVER BASIN

3107. South Myrtle Creek near Myrtle Creek, Oreg.

Location. Lat 43°01'55", long 123°11'30", in SE£ sec. 20, T. 29 S., R. 4 W., on left bank 0.6 mile downstream from School Hollow and 5.5 miles east of town of Myrtle Creek. Drainage area. 43.9 sq mi. Records available. October 1955 to September 1958. Gage. Staff gage and crest-stage indicator; gage read twice daily for stages above 3.0 ft, once daily below. Datum of gage is 775.25 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 2,080 cfs Jan. 29 (gage height, 6.1 ft); minimum observed, 1.6 cfs Aug. 26. 1955-58: Maximum discharge, 3,050 cfs Dec. 11, 1956 (gage height, 7.72 ft), from rating curve extended above 1,100 cfs by logarithmic plotting; minimum observed, 1.4 cfs Aug. 25, Sept. 7, 1957. Remarks. Records fair. No regulation. Several diversions for irrigation of about 600 acres above station.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second)

1.0 1.2 22 3.0 440 3.0 1.5 53 4.0 915 7.0 2.0 132 5.0 1,460 1.0 13 2.5 255 Dlacharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 12 8.5 17 114 225 174 132 48 19 21 3.2 2 14 8.5 18 106 186 126 15Z 12 22 20 3.0 fi 3 22 8.5 17 81 136 127 127 41 56 15 2.8 4.0 4 41 8.5 16 70 114 109 *99 40 *53 14 3.0 3.8 5 36 8.2 TS 57 97 97 92 39 42 13 4.5 3.8 6 23 8.2 20 53 81 94 97 36 31 9.8 4.2 3.8 7 30 8.2 97 51 75 81 81 36 42 9.5 3.8 3.7 8 19 9.0 74 49 66 81 74 35 97 9.0 3.7 3.7 9 15 8.8 53 4"545 53 97 66 34 81 8.5 3.0 4.7 10 12 *10 42 1(56" 97 62 31 53 8.2 2.4 5.2 11 12 15 39 66 89 89 61 31 42 5.8 2.0 5.6 12 11 11 31 249 121 81 58 31 38 3.7 2.5 5.2 13 21 203 28 225 184 81 54 31 33 5.4 2.3 10 14 30 240 25 174 360 74 53 26 28 4.5 2.0 13 15 11 TSS 23 152 *755 69 50 25 25 8.0 2.4 8.5 16 12 74 *36 123 680 66 50 22 22 6.5 3.5 5.2 17 12 50 132 132 342 60 49 20 20 6.1 4.4 7.8 18 12 97 255 114 212 56 51 19 17 5.6 3.0 7.0 19 11 114 542 89 174 53 49 *19 17 5.4 3.7 7.0 20 10 58 680 81 142 53 48 17 19 4.9 3.2 7.0 21 9.8 52 *998350" 81 119 60 45 16 16 4.4 2.8 6.8 22 9.2 42 81 102 53 34 16 15 6.3 2.4 7.0 23 9.0 33 225 76 91 63 97 19 16 5.6 2.0 7.0 24 9.0 29 212 127 255 66 97 17 17 5.9 2.6 7.0 25 9.0 26 212 118 588 69 81 16 16 4.2 2.0 6.5 26 9.2 22 288 106 500 74 66 T5-15 16 4.4 1.6 6.5 27 9.2 22 420 106 360 66 62 15 3.8 3T3 6.5 28 9.2 21 529 480 225 63 57 19 15 3.3 3.0 6.5 29 9.0 19 288 1,140 - 61 51 16 14 2.3 6.5 30 9.0 18 203 520 84 49 15 14 sis 3.0 6.5 31 .°_i£ 152 288 132 15 3.3 3.3 Total 466.1 1,355.4 6,068 5,199 6,438 2,576 2,174 802 912 232.0 90.9 183.7 Mean 15.0 45.2 196 168 230 83.1 72.5 25.9 30.4 7.48 2.93 6.12 Ac-ft 924 2,690 12,040 10,310 12,770 5,110 4,310 1,590 1,810 460 180 364 Calendar year 1957: Max 1,070 Mln 1.4 Mean 75.2 Ac-ft 54,440 Water year 1957-58: Max 1,140 Mln 1.6 Mean 72.6 Ac-ft 52,560 Discharge measurement made on this day. UMPQUA RIVER BASIN 227

3110. North Myrtle Creek near Myrtle Creek, Oreg.

Location. Lat 43°02'30", long 123°15'30", in SW£ sec. 14, T. 29 S., R. 5 W., on right bank 0.1 mile downstream from Bilger Creek, 1.5 miles northeast of town of Myrtle Creek, and 2.5 miles upstream from confluence with South Myrtle Creek. Drainage area. 54.2 sq mi. Records available. October 1955 to September 1958. gage. Water-stage recorder. Altitude of gage is 660 ft (from topographic map). Extremes. Maximum discharge during year, 2,210 cfs Jan. 29 (gage height, 8.13 ft); from rating curve extended above 680 cfs by logarithmic plotting; minimum, 1.5 cfs Aug. 26. 1955-58: Maximum discharge, 3,170 cfs Feb. 21, 1956 (gage height, 9.87 ft), from rating curve extended above 680 cfs by logarithmic plotting; maximum gage height, 11.58 ft Dec. 26, 1955 (backwater from debris); minimum discharge, that of Aug. 26, 1958. Remarks. Records fair. No regulation. Several diversions for irrigation above station.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Dec. 2O to Jan. 12, Jan. 29, Jan. 31 to Feb. 16, Feb. 25)

1.45 1.5 2.0 3.5 325 1.5 2.3 2.2 4.0 5OO 1.6 4.8 2.5 5.0 965 1.8 13 3.O 184 6.O 1,590 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 14 9.3 ?2~21 138 376 28O 156 38 24 24 5.1 2.5 2 13 8.4 118 286 214 158 37 33 5.1 3.3 3 27 8.4 21 94 227 174 T4? 34 58 19 4.2 2.9 4 36"40 8.4 21 80 182 149 *128 32 *58 17 3.3 3.3 5 *8.9 21 70 156 136 108 31 41 15 5.1 2.9 6 29 8.4 27 65 134 122 106 31 39 15 5.4 2.5 7 32 7.9 53 58 124 116 94 29 48 14 3 .1 1.9 8 23 574 63 56 116 122 82 28 100 14 4!2 37T 9 18 7.9 53 51 13? 134 74 26 ^72 13 4.5 5.1 10 15 8.0 45 IT 167 142 67 24 54 12 5.4 5.1 11 15 12 40 87 158 140 63 27 46 12 5.1 5.4 12 14 10 37 244 194 132 58 27 41 9.3 4.8 5.7 13 19 160 34 383 247 122 57 26 35 10 4.5 13 14 24 2OO 31 271 39O 112 53 23 29 10 3.6 ~9.314 15 20 TTO 3O 212 *906 96 51 21 26 11 2.7 16 17 65 *35 165 1.270 87 49 21 25 13 3.1 10 17 15 45 1O2 177 6O4 79 5O 19 24 11 2.9 8.9 18 14 80 280 156 366 73 48 18 21 11 3.1 7.9 19 12 100 560 140 289 69 45 *19 21 11 2.5 7.5 20 11 60 779 130 222 66 44 17 23 10 2.1 7.5 21 11 45 *1.570 124 184 65 44 17 19 9.3 3.6 7.1 22 10 40 560 116 162 £5"61 56 17 19 7.9 3.9 7.9 23 9.3 35 316 120 145 66 21 20 7.5 3.9 7.9 24 9 .3 30 277 13O 464 61 65 17 22 7.1 3.6 7.1 25 11 27 256 132 965 65 61 15 20 6.4 3.6 6.8 26 13 26 340 130 74O 69 53 14 19 6.4 2.5 6.8 27 11 24 383 128 584 67 50 T4 21 4.5 1.7 6.8 28 11 23 528 438 386 63 45 17 19 3.9 T7T 6.4 29 10 22 34O 1,450 - 70 44 15 18 *3.6! 5" 2.5 6.4 3O 9.8 21 232 904 79 4O 14 17 * .0 3.3 6.4 31 9.8 177 536 140 18 4.8 2.9 Total 523.2 1,219.0 7,054 6,964 1O.176 3,370 2,157 7O7 1,012 34O.5 113.0 191.4 Mean 16.9 40.6 228 225 363 1O9 71.9 22.8 33.7 11.0 3.65 6. 38 Ac-ft 1,040 2,420 13,990 13,810 20,180 6,68O 4,280 1,400 2,010 675 224 380 Calendar year 1957 i Max 1,79O Mln 1.9 Mean 85.8 Ac-ft 62.16O Water year 1957-58 : Max 1,450 Mln 1.7 Mean 92.7 Ac-ft 67,090 Peak discharge (base. 1,1OO cfs). --Dec. 21 (2:3O a.m.) 1,95O cfs (8.11 ft); Jan. 29 (l:3O p.m.) 2,210 cfs (8.13 ft); Feb. 16 (l:3O p.m.) 1,810 cfs (6.88 ft); Feb. 24 (11:30 p.m.) 1,O70 cfs (5.39 ft). * Discharge measurement made on this day. Note. No gage-height record Nov. 10-24; discharge estimated on basis of weather records, recorded ange In stage, and records for South Myrtle Creek near Myrtle Creek. 228 UMPQUA RIVER BASIN

3112. Olalla Creek near Tenmile, Oreg.

Location. Lat 43°02'20", long 123°32 I 35", in NW£ sec. 21, T. 29 S., R. 7 W., on left bank 0.5 mile downstream from Berry Creek and 4.4 miles south of Tenmile. Drainage area. 60.5 sq mi. Records available. October 1956 to September 1958. Gage. Water-stage recorder. Datum of gage is 749.53 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to June 21, 1957, wire-weight gage at site a third of a mile downstream at datum 7.83 ft lower. Extremes.--Maximum discharge during year, 5,550 cfs Dec. 20 (gage height, 10.05 ft), from rating curve extended above 2,500 cfs; minimum daily, 0.5 cfs Aug. 15, 16, 24-27. 1956-58: Maximum discharge, that of Dec. 20, 1957; minimum, 0.3 cfs Sept. 10, 1957. Flood of Dec. 26, 1955, reached a stage of 13.6 ft, present site and datum, from floodmarks (discharge, about 9,000 cfs), from rating curve extended above 2,500 cfs by logarithmic plotting. This was the highest known flood for at least the preceding 35 years. Remarks. Records good except those below 1.0 cfs, which are fair, Some diversions for irrigation above station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) (Shifting-control method used Nov. 14 to Dec. 19) Oct. 1 to Dec-. 19 Dec. 20 to Sept. 30 3.3 . 2.0 91 1.0 5.1 3.0 183 .6 2.5 170 1.3 14 3.5 296 1.9 3.0 282 1.6 26 4.0 456 4.1 4.0 609 2.0 55 5.0 915 .9 7.4 5.0 1,110 1.3 6.0 1,750 1.5 8.0 3,500 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 3.5 5.4 21 245 497 323 647 32 25 19 T75-1.8 ~0.6 2 4T^ .9 21 257 343 233 664 3T 51 19 3 6.1 .6 19-19 224 264 182 *570" 28 91 14 1.4 .9 4 20 .6 196 211 142 337 26 51 12 1.4 .6 5 28. * .2 19 170 205 129 233 26 56 9.6 1.2 .6 6 22 .0 23 146 186 114 188 26 49 8.3 1.0 .6 7 24 .0 58 131 SI3 101 144 24 41 7.4 .8 .6 8 16 .2 61 123 337 114 118 23 47 7.4 .6 .6 9 12 .2 52 111 499 144 101 22 42 7.1 .9 .9 10 9.7 12 45 IW 651 148 89 21 38 *6.1 .8 1.4 11 8.1 31 39 419 446 142 77 22 32 5.8 .6 1.5 12 7.6 31 36 703 552 128 68 22 28 5.4 .6 1.5 13 14 258 32 760 669 136 61 20 25 4.4 .6 3.7 14 15 467 30 469 *810 132 56 19 23 4.1 .6 4.1 15 11 354 28 354 1,980 126 50 18 21 4.1 .5 27ff 16 8.9 148 48 277 2,080 112 47 17 20 4.4 .5 1.8 17 7.9 112 *296 240 910 96 54 16 18 4.4 .6 1.6 18 6.6 126 755 209 713 81 50 16 16 4.1 .6 1.5 19 6.1 107 871 188 590 72 44 *17 15 4.1 .6 1.4 20 5.6 88 *2,130 190 442 68 41 16 15 3.9 .6 1.2 21 4.9 69 *2,500 231 320 77 41 15 14 3.4 a. 6 1.2 22 4.6 55 1,020 213 252 68 60 15 12 3.4 a. 6 1.2 23 4.6 46 651 235 207 64 71 17 12 2.8 a. 6 1.3 24 6.4 41 673 317 2,620 61 70 17 12 2.8 a. 5 1.3 25 11 36 626 301 2,530 6T 62 15 13 2.6 a. 5 1.2 26 12 31 726 260 1,330 79 56 15 11 2.1 .5 .9 27 9.7 28 755 229 785 80 50 14 11 2.1 a. 5 .9 28 8.6 26 880 944 483 74 47 15 11 1.9 a. 6 1.0 29 7.4 24 622 2,410 - 119 41 14 10 1.9 *.6 .9 30 6.4 22 416 1 1 380 350 58 TB-13 10 1.8 g .9 31 6.1 301 810 1,020 lj.6 . 8 Total 317.8 2,102.1 13,773 12,940 21,125 4,784 4,175 608 850 181.0 23.9 39.5 Mean 10.3 70.1 444 417 754 154 139 19.6 28.3 5.84 0.77 1.32 Ac-ft 630 4,170 27,320 25,670 41,900 9,490 8,280 1,210 1,690 359 47 78 Calendar year 1957 : Max 2,500 Min 0.4 Mean 120 Ac-ft 86,880 Water year 1957-58: Max 2,620 Mln o.5 Mean 167 Ac-ft 120,800 'eak discharge (base, 1,000 cfs). Dec. 20 (10 p.m.) 5,550 cfs (10.05 ft); Jan. 29 (10 a.m.) 3,460 cfs (7.96 ft); Feb. 15 (10:30 p.m.) 4,550 cfs (9.05 ft); Feb. 24 (8 p.m.) 5,260 cfs (9.76 ft); Mar. 51 (12 m.) 1,090 efs (4.97 ft). * Discharge measurement made on this day. a No gage-height record; discharge Interpolated. UMPQUA RIVER BASIN 229

3115. Looklngglass Creek at Brockway, Oreg.

Location. Lat 43°07'05", long 123 026'15", In SWi: sec. 20, T. 28 S., R. 6 W., on right bank 0.4 mile northeast of Brockway and 0.8 mile upstream from mouth. Drainage area. 158 sq ml. Records available. October 1955 to September 1958. Gage. Water-stage recorder. Datum of gage is 493.19 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 17,500 cfs Dec. 21 (gage height, 19.96 ft), from rating curve extended above 5,700 cfs as explained below; no flow Aug. 1 to Sept. 25, Sept. 27-30. 1955-58: Maximum discharge, 35,000 cfs Dec. 26, 1955 (gage height, 24.93 ft), from rating curve extended above 5,700 cfs on basis of slope-area measurement of peak flow; no flow at times each year. Remarks. Records good except those for periods of no gage-height record or backwater from South Umpqua River, which are poor. Many diversions by pumping for Irrigation above station.

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 13 11 60 542 1,300 89O 1,440 ToB"116 36 30 0 Z 11 10 58 560 883 665 1,450 90 41 0 3 12 10 56 453 650 520 *1,370 94 132 3T 0 4 34 10 52 392 504 42O 862 87 146 23 0 5 105 »9.8 52 334 442 372 611 82 104 19 0 6 53 9.8 75 285 398 336 492 77 99 17 aO 7 76 10 337 248 469 298 396 70 94 15 aO 8 51 10 287 227 578 352 314 67 111 13 0 9 38 10 297 210 728 475 267 63 116 12 aO 10 28 10 167 310 1,120 449 228 a58 105 *12 ao 11 22 64 142 788 914 406 203 a60 83 11 aO 12 19 77 125 1,840 1,40O 362 184 a60 67 9.0 aO 13 44 1,030 110 1,800 1,740 366 166 a55 57 7.8 aO 14 57 1,140 98 1,070 *1,940 340 151 a50 50 7.5 aO 15 40 872 93 911 5,620 309 138 a45 45 7.0 0 16 30 449 122 671 07,370 282 132 a42 4O 6.5 0 17 24 294 *653 592 c2,240 248 162 a40 36 7.5 aO 18 19 370 1,970 484 1,680 219 169 a41 32 8.2 aO 19 17 330 3,350 416 1,400 197 142 *42 28 8.5 aO 20 15 259 5,760 464 1,020 184 133 39 28 7.5 *0 21 13 200 *clO.OOO 570 779 194 134 35 26 6.5 0 22 13 163 2,800 494 617 182 187 33 24 4.7 0 23 10 140 1,530 482 516 173 243 38 22 3.2 0 24 IT 121 1,600 668 5,020 TSB"162 a240 39 24 2.6 0 25 13 107 1,490 638 c8,410 a210 36 24 2.3 0 26 18 96 1,900 548 3,490 217 a!90 33 21 1.8 o .2 27 20 85 1,820 473 2,170 217 a!75 32 20 2.2 28 17 77 2,290 cl,690 1,300 200 a!60 32 19 1.8 0 29 14 69 1,510 c5,960 - 257 a!40 31 19 1.9 (*) 0 30 12 64 988 c3,410 704 a!30 28 17 1.1 0 31 12 710 2,280 2,050 25_ ^5 Total 859 6,107.6 40,412 29,810 54,698 12,231 10,819 1,655 1,715 322.1 0 0.2 Mean 27.7 204 1,304 962 1,954 395 361 53.4 57. Z 10.4 0 0.007 Ao-ft 1,700 12,110 80,160 59,130 108,500 24,260 21,460 3,280 3,400 639 0 0.4 Calendar year 1957 : Max 10,000 Mln o Mean 326 Ac-ft 235,800 Water year 1957-58 ' Max 10,000 Mln o Mean 435 Ao-ft 314,600 Peak discharge (base, 3,000 eta). Dec. 21 (4 a.m.) 17,500 cfa (19.96 ft); Jan. 29 (5 p.m.) 8,020 cfa (18.18 ft); Feb. 16 (3 a.m.) 14,600 cfs (18.82 ft); Feb. 25 (3 a.m.) 15,400 cfa (19.05 ft).______* Dlacharge meaaurement or obaervatlon of no flow made on thla day. a No gage-height record; discharge eatimated on baala of recorda for Olalla Creek near Tenmlle. c Backwater from South Umpqua River. 230 UMPQUA RIVER BASIN

3120. South Umpqua River near Brockway, Oreg.

Location. Lat 43°08'00", long 123°23 I 50" J in SW£ sec. 15, T. 28 S., R. 6 W., on downstream side of right pier of Wlnston Bridge on U. S. Highway 99, 2? miles northeast of Brockway, and 4 miles downstream from Lookingglass Creek. Drainage area. 1.670 sq mi. Records available. December 1905 to June 1912, October 1923 to September 1926, January 1942 to September 1958. Monthly discharge only for some periods, published in WSP 13ia Gage. Water-stage recorder. Datum of gage is 461.84 ft above mean sea level, datum of T929 (Oregon State Highway Department bench mark). Prior to June 24, 1949, staff, chain, and wire-weight gages at several sites within 400 ft of present site at various datums. Average discharge. 24 years (1906-11, 1923-26, 1942-58), 2,912 cfs (2,108,000 acre-ft per year). Extremes. Maximum discharge during year, 66,100 cfs Jan. 29 (gage height, 26.01 ft); mini mum, 94 cfs Sept. 5. 1905-12, 1923-26, 1942-58: Maximum discharge, 102,000 cfs Oct. 29, 1950 (gage height, 32.4 ft), from rating curve extended above 76,000 cfs on basis of slope- conveyance study; minimum observed, 36 cfs Aug. 12, 13, 1946. Flood of Feb. 21, 1927, reached a stage of about 31.2 ft, present site and datum (discharge, 101,000 cfs). Flood in February 1890 reached a stage 1.9 ft higher, accord ing to local resident who lived nearby at time of both floods (discharge, about 130,000 cfs). Remarks. Records good except those for periods of no gage-height record, which are fair. No regulation. Many small diversions for irrigation above station. Revisions (water years). WSP 1248: 1946(M), 1948(M), 1951. WSP 1448: Drainage area.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Hov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 337 293 788 5,870 14,500 9,920 12,900 2.220 993 645 al95 107 2 337 279 750 5,750 10,500 S,000 12,600 2,140 1,200 716 aT§5 104 3 365 268 744 5,490 8,120 6,680 *14,400 2,100 1,820 733 a!95 102 4 665 258 695 4,720 6,600 5,750 9,650 2,020 4,660 650 a!95 99 5 1.140 252 675 4,030 5,830 5,110 7,350 1,960 2,910 575 al90 97 6 1,110 249 690 3,590 5,640 4,790 6,200 1,930 2,220 523 a!90 97 7 1,100 243 2,400 3,430 5.520 4,290 5,540 1,860 2,780 487 al90 102 8 1,130 243 3,900 3,190 6,580 4,220 4,860 1,790 3,930 *456 a!85 108 9 772 *246 2,570 3,020 8,800 4,320 4,460 1,840 4,180 438 al85 113 10 625 272 1,930 3,210 10,900 4,150 4,240 1,790 3,220 411 al85 122 11 532 478 1,590 6,820 8,880 4,010 4,270 1,940 2,520 a380 alSO 138 12 464 766 1,340 10,600 10,500 3,840 4,150 1,950 2,110 a360 180 140 13 464 5,600 1,150 16,300 13,900 3,830 4,060 1,680 1,840 a340 176 146 14 870 10,600 1,050 10,100 *14,500 3,660 3,880 1,480 1,590 a320 167 176 15 1,020 7,420 951 8,250 26,900 3,460 3,480 1,380 1,390 313 165 286 16 738 4,300 *951 7,720 48.500 3,190 3,190 1,360 1,230 a315 160 225 17 595 2,920 4,210 6,980 26,500 3,000 3,210 1,400 1,110 a320 154 188 18 496 3,290 12,300 6,720 20,000 2,820 4,300 1,490 1,020 317 152 169 19 442 5,720 13,900 5,660 16,100 2,640 3,840 1,550 930 a300 150 167 20 394 3,860 28,000 4,990 12,400 2.580 3,460 *1,500 894 a290 146 15S 21 357 2,840 50,500 5,050 9,620 3,060 3,620 1,410 852 279 146 156 22 337 2,170 23,000 4,590 7,880 3,980 4,610 1,370 810 252 150 156 23 313 1,780 12,700 4,360 6,720 3,690 5,070 1,380 755 246 152 156 24 301 1,510 10,900 10,500 18,600 3,640 4,550 1,370 772 240 146 154 25 381 1,360 12,000 10,200 45,100 3,720 3,950 1,410 780 228 136 a!52 26 487 1,190 15,000 7,680 27,200 4,370 3,450 1,200 706 a220 125 a!52 27 505 1,060 13,600 6,100 18,100 4,290 3,060 1,100 675 a210 107 a!54 28 442 951 19,200 15,400 16,200 3,880 2,740 1,110 670 a205 96 al52 29 386 912 15,200 48,200 - 3,720 2,520 1,060 645 a200 *100 a!50 30 345 328 10,600 38,100 6, 160 2 '350 924 600 197 105 al48 31 313 7,500 22,400 11.700 876 al95 107 Total 17,763 62,158 270,584 299,020 430,390 142,470 155,960 48,590 49,812 11,361 4,905 4,374 Mean 573 2,072 8,729 9,646 15,370 4,596 5,199 1,567 1,660 366 158 146 Cfsra 0.343 1.24 5.23 5.78 9.20 2.75 3.11 0.93S 0.994 0.219 0.095 0.087 In. 0.40 1.38 6.03 6.66 9.58 3.17 3.47 1.08 1.11 0.25 0.11 0.10 Ac-ft 35,230 123,300 536, 700 593,100 853, 700 282,600 309,300 96,380 98,800 22,530 9,730 8,680 Calendar year 1957: Max 50,300 Win 85 Mean 3,167 Cfsm 1.90 In. 25.74 Ac-ft 2,293,000 Water year 1957-58: Max 50,300 Mln 96 Mean 4,102 Cfsm 2.46 In. 33.35 Ac-ft 2,970,000 Peak discharge (base, 15,000 cfs). Dec. 21 (7:30 a.m.) 61,400 cfs (24.89 ft); Dec. 28 (10 a.m.) 20,900 cfs (13.83 ft); Jan. 13 (3:30 a.m.) 19,700 cfs (13.47 ft); Jan. 29 (8 p.m.) 66,100 cfs (26.01 ft): Feb. 16 (7 a.m.) 57,600 cfs (23.93 ft); Feb. 25 (6 a.m.) 54,500 cfs (23.05 ft); Apr. 3 (1:50 a.m.) 16,800 cfs (12.45 ft).______* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records, recorded range in stage, and records for station near-Tiller and Cow Creek near Riddle. UMPQUA RIVER BASIN 231

3122. Deer Creek near Roseburg, dreg.

Location.--Lat 43°13 I 05", long 123°17'15", in SE£ sec. 16, T. 27 S. , R. 5 W. , on left bank" 200 ft upstream from Shick Creek, 2.8 miles east of Roseburg, and 3 miles upstream from mouth. Drainage area. 54.3 sq mi. Records available. October 1955 to September 1958. . Staff gage read once daily, twice daily above 4 ft gage height. Datum of gage is B6.1 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Extremes.--Maximum discharge during year, 4,360 cfs Dec. 20, from rating curve extended above 2,200 cfs on basis of slope-area measurements as explained below; minimum observed, 0.2 cfs Aug. 21, Sept. 2. 1955-58: Maximum discharge, 6,800 cfs Dec. 26 ( 1955 (gage height, 13.67 ft, from floodmarks), from rating curve extended above 2,200 cfs on basis of slope-area measure ments at gage heights 13.38 and 13.67 ft; minimum observed, that of Aug. 21, Sept. 2, 1958. Remarks. Records good except those for periods of no gage-height record, which are fair. Many small diversions by pumping for irrigation above station; diversions above station for log ponds.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dee. 20 Dec. 21 to Sept. 30 1.3 0.6 3.0 132 1.2 0.2 2.5 93 1.4 1.9 3.5 204 1.3 1.0 3.0 164 1.5 4.7 4.0 310 1.4 2.8 4.0 370 1.7 13 5.0 590 1.6 9.2 5.0 6 SO 2.0 35 6.0 960 1.8 6.0 1,070 2.5 75 8.0 1,900 2.0 8.0 2,050 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 8.8 3.8 a!9 112 243 215 199 28 36 28 1.0 1.6 2 5.0 3.2 a24 122 199 181 164 25 43 17 2.4 .2 3 11 2.2 a!7 96 156 149 155 24 a55 15 1.6 *7ff 4 13 1.6 a!5 78 115 119 116 22 a48 12 1.0 .8 5 19 *?7? a!4 69 107 107 105 21 38 12 2.1 .8 6 11 4.4 a36 59 88 93 101 20 36 all 1.9 .8 7 17 4.4 a!30 56 89 81 93 19 61 9.2 1.8 1.8 8 11 5.0 a90 52 81 119 81 17 452 a8 1.6 1.9 9 8.0 5.0 a70 46 70 111 98 17 174 a8. 5 1.6 1.9 10 8.0 5.0 a55 eS 18T 103 70 16 103 a7.5 1.4 2.6 11 7.2 15 a40 149 134 100 48 20 70 a7 .8 2.4 12 5.0 15 a34 515 318 101 a46 16 *55 a6.5 1.0 2.4 13 18 85 a24 452 273 89 46 12 38 6.1 1.6 4.3 14 21 -8T132 a 19 275 470 79 46 11 33 5.8 1.1 374 15 TT a!5 188 1,160 a70 38 11 28 5.8 .8 2.1 16 8.0 85 16 137 *1,060 61 38 11 24 5.5 1.6 1.6 17 7.2 41 a80 152 *521 58 48 10 20 4.9 1.2 2.1 18 7.2 41 *527 119 287 48 59 10 17 4.6 al.5 1.9 19 5.0 40 786 106 235 *45 48 9.2 16 4.3 1.9 1.8 20 4.4 38 1,500 148 203 a40 39 9.2 16 4.3 a. 7 1.6 21 4.4 35 *1,990 152 160 43 48 8.4 14 *3.1 .2 .6 22 3.8 27 §63 131 136 40 57 12~8.0 13 a3 aT? 1.6 23 3.8 21 350 137 125 57 59 3T 2.8 .8 1.6 24 3.8 20 380 181 950 54 60 12 21 2.6 1.0 1.6 25 5.0 19 a 400 172 1.200 52 61 11 16 2.4 .8 1.6 26 8.0 13 425 142 704 59 57 11 15 a2.6 .8 1.4 27 5.6 15 372 119 485 50 46 10 15 2.8 .8 1.2 28 5.0 16 449 645 295 48 38 9.6 15 1.1 .6 .S 29 5.0 16 263 1.450 - 79 38 9.2 13 T79 .8 .8 30 4.4 16 194 850 610 *34 8 .0 13 2.8 1.2 iAA |4 31 4.4 146 *482 OS70 11 1.2 " Total 259.0 814.5 9,043 7,415 10,045 3,459 2,136 438.6 1,529 209.3 40.0 49.2 Mean 8.35 27.2 292 239 359 112 71.2 14.1 51.0 6.75 1.29 1.64 Ac-ft 514 1,620 17,940 14,710 19,920 6,860 4,240 870 3,030 415 79 98 Calendar year 1957 : Max 1,990 Mln 0.3 Mean 73.3 Ac-ft 53,060 Water year 1957-58 : Max 1,990 Mln 0.2 Mean 97.1 Ac-ft 70,300 Peak discharge (base, 1,200 cfs).--Dec. 20 (about 12 p.m.) 4,360 cfs (11.36 ft); Jan. 29 (about 2 p.m.) 1,630 cfs (7.2 ft); Feb. 15 (about 8 p.m.) 3,090 cfs (9.70 ft); Feb. 24 (about 8 p.m.) 2,650 cfs (9.0 ft). * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records and records for Calapooya Creek near Oakland and Sutherlln Creek at Sutherlln. 232 UMPQUA RIVER BASIN

3130. Lemolo Reservoir near Toketee Falls, Greg.

Location. Lat 43°19 I 10", long 122°11'20", in SE^NW^ sec. 11, T. 26 S. , R. 5 E. , at Lemolo No. 1 diversion dam, 1.1 miles downstream from Lake Creek and 13 miles east of Toketee Falls. Drainage area. 170 sq mi. Records available. July 1954 to September 1958. Gage. Staff gage read once daily. Datum of gage is at mean sea level (levels by The California Oregon Power Co.). Extremes. Maximum contents observed during year, 13,350 acre-ft Oct. 1, 14, Nov. 14, 15, July 31 (elevation, 4,148.0 ft); minimum observed, 6,140 acre-ft Apr. 12 (elevation, 4,127.1 ft). 1954-58: Maximum contents observed, 13,560 acre-ft Aug. 5, 1955, June 13, 14, 1956 (elevation. 4,148.5 ft); minimum observed, 11 acre-ft Mar. 5, 1955 (elevation, 4,055.4 ft). Remarks. Reservoir is formed by Lemolo No. 1 diversion dam. Storage began July 15, 1.954. UsaFle capacity, 12,520 acre-ft between minimum operating elevation at 4,097.0 ft and maximum operating elevation at 4,148.5 ft. Figures given herein represent total contents. Dead storage below 4,097.0 ft is 1,040 acre-ft. Water is used for genera tion of power at powerplants downstream. Cooperation. Gage readings furnished by The California Oregon Power Co. Revisions. WSP 1448: Drainage area.

Month end elevation and total contents, water year October 1957 bo September 1958 Elevation Contents Change In contents Date (feet)t (acre-feet) (acre-feet) _ Oct. 31...... 12,890 -500 Nov. 30...... 4,146.8 12,850 -40 Dec. 31...... 4,143.8 11,650 -1,200 Calendar year 1957 ...... - - -1,070 -3,580 Peb . 28 ...... 4,135.0 8,550 +480 +2,980 12,240 +2,000 12,890 +650 July 31 ...... 13,350 +460 -4,240 7,850 -1,260 Water year 1957-58 ...... - - -5,540 t Elevation at 9 a.m. UMPQUA RIVER BASIN 233

3135. North Umpqua River below Lemolo Reservoir, near Toketee Falls, Oreg.

Location . La t 43 019'20", long 122«11'40", in NW&JWi sec. 11, T. 26 S., R. 5 E. , on right bank T., 900 ft downstream from Lemolo Reservoir and 13 miles east of Toketee Palls. Drainage area. 170 sq mi. Records available. October 1927 to December 1945, March 1946 to September 1958. Published as "below Lake Creek" prior to October 1952 and as "below Lake Creek, near Toketee Falls" October 1952 to September 1953. Ga, . Water-stage recorder. Altitude of gage is 4,025 ft (from river-profile map). Prior o July 15, 1954, at site 1 mile upstream at datum about 65 ft higher. July 15, 1954, to Sept. 25, 1955, at site 400 ft upstream at datum 14.11 ft higher. Average discharge. 30 years, 413 cfs (299,000 acre-ft per year), adjusted for storage. Extremes . Maximum discharge during year, 939 cfs May 21; minimum daily, 126 cfs Oct. 20. l9~27.-58: Maximum discharge, 1,400 cfs June 3, 1956, from river rating curve extended from 450 to 905 cfs; minimum daily, 9.7 cfs May 13, 1955. Remarks . Records good. Flow regulated since 1954 by Lemolo Reservoir (see preceding page); also slightly regulated by Diamond Lake. All records presented herein include flow in Lemolo No. 1 power canal which, beginning July 7, 1955, has diverted 0.4 mile above station for power generation with return flow 4.3 miles downstream. Revisions . WSP 1448: Drainage area.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 461 419 254 381 527 474 498 573 738 551 505 534 2 540 349 447 451 470 463 *506 573 739 512 472 545 3 269 424 551 492 524 494 546 753 519 479 53¥ 4 343 436 422 534 543 575 518 S5S-488 755 603 428 530 5 328 408 432 454 460 581 489 744 507 539 517 6 313 430 468 517 541 610 497 542 793 525 383 410 7 523 396 449 477 532 641 506 549 808 *505 517 407 8 436 *425 453 546 544 617 501 552 798 502 454 411 9 483 386 462 543 542 526"669 500 566 813 524 453 412 10 451 276 464 543 539 497 594 77T 526 435 406 11 417 316 457 551 539 635 494 708 730 536 477 408 12 318 439 470 542 *524 632 404 768 651 534 462 403 13 338 457 546 546 504 634 413 775 638 480 554 404 14 438 450 365 545 526 622 489 762 627 546 541 414 15 539 461 200 549 524 515 511 702 637 537 540 414 16 442 464 501 548 546 436 399 672 589 545 426 420 17 475 444 464 544 345-547 431 416 672 578 509 545 429 18 493 476 527 454 44? 410 674 582 544 542 418 19 410 431 492 470 544 448 345 743 589 461 533 419 20 126 495 527 556 535 446 333 783 612 468 500 405 21 497 478 537 541 535 445 475 866 601 529 427 410 22 476 467 512 551 529 449 418 *936S46- 581 417 540 424 23 439 364 466 539 519 440 513 617 551 526 399 24 416 328 540 534 514 446 520 780 649 514 525 406 25 455 422 544 382 524 476 516 777 653 496 531 420 26 351 474 468 495 513 484 419 802 617 472 528 410 *531 27 224 452 410-553 556 496 480 435-297 821 588 449 400 28 424 352 510 483 476 818 564 452 540 367415" 29 424 394 358 444 477 516 813 556 449 537 30 442 406 537 442 489 569 765 555 "525384r 537 403 31 469 551 442 493 717 530 Total 13,238 12,364 14,300 15,768 14,637 16,176 13,959 21,741 19,906 15,672 15,537 12,895 Mean 427 412 461 509 523 522 465 701 664 506 501 430 Ac-ft 26,260 24,520 28,360 31,280 29,030 32,080 27,690 43, 120 39,480 31,080 30,820 25,580

Adjusted for change in contents of Lemolo Reservoir Mean 419 411 442 450 531 501 515 734 674 513 432 409 Cfsm 2.46 2.42 2.60 2.65 3.12 2.95 3.03 4.32 3.96 3.02 2.54 2.41 In. 2.84 2.70 3.00 3.06 3.25 3.40 3.38 4.98 4.43 3.48 2.93 2.68 Ac-ft 25,760 24,480 27,160 27,700 29,510 30,790 30,670 45,120 40,130 31,540 26,580 24,320

Calendar year 1957: Max 944 Min 126 Mean 499 Ac-ft 361 ,100 Water year 1957-58: Max 936 Min 126 Mean 510 Ac-ft 369 ,300 Adjusted Calendar year 1957: Mean 497 Cfsm 2. 92 In. 39.72 Ac -ft 360 ,000 Water year 1957-58: Mean 503 Cfsm 2. 96 In. 40.13 Ac-ft 363 ,800 Discharge measurement made on this day.

534540 O -60 -16 234 UMPQUA RIVER BASIN

3145. Clearwater River above Trap Creek, near Toketee Palls, Oreg.

Location. Lat 43°14'40", long 122°17'10", in SE£ sec. 1, T. 27 S-, R. 4 E., on right bank 900 ft downstream from Clearwater No. 1 diversion dam, 0.4 mile upstream from Trap Creek, and 8 miles east of Toketee Palls. Drainage area. 41.6 sq mi. Records available . October 1927 to December 1945, March 1946 to September 1958. Monthly discharge only December 1927 to March 1928, published in WSP 1318. Prior to October 1952, published as "above Trap Creek." Gage. Water-stage recorder. Datum of gage is 3,862.84 ft above mean sea level (levels by The California Oregon Power Co.). Prior to Dec. 1, 1953, at two sites about 0.4 mile downstream at different daturas. Average discharge. 30 years, 166 cfs (120,200 acre-ft per year). Extremes. Maximum discharge during year, 364 cfs Feb. 25; minimum daily, 158 cfs many days in September. 1927-58: Maximum discharge, 598 cfs Dec. 22, 1955, from river rating curve extended from 58 to 399 cfs by logarithmic plotting; minimum daily, 91 cfs Nov. 4-6, 1931. Remarks. Records good. All records presented herein include flow in Clearwater No. 1 power canal, completed in June 1953, which diverts 900 ft above station for generation of power and returns water to Clearwater River 2| miles below station. Revisions.--WSP 1124: Drainage area.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 156"163 164 161 176 217 2722S3" *205 23423B" 250 203 168 162 2 164 161 176 215 206 244 202 170 161 3 171 164 ISO"160 175 211 258 203 240 292 202 170 161 4 168 163 175 208 251 201 243 272 202 170 160 5 168 164 160 174 207 248 201 249 254 200 170 159 6 166 164 165 173 205 241 200 250 265 200 170 T38~158 7 166 164 175 T77 2T5B" 238 199 249 257 *198 172 8 166 *164 166 173 205 235 198"198 255 250 196 174 159 9 168 163 164 173 207 231 265 240 194 175 158 10 167 165 162 175 207 228 201 277 232 192 177 158 11 166 164 163 175 *207 225 201 292 230 190 178 158 12 166 169 162 180 227 222 202 266 230 190 178 158 13 173 192 161 177 224 221 202 252 225 187 179 162 14 174 T8T 161 177 223 217 204 247 225 186 179 158 15 TE5 169 161 180 272 216 205 247 226 184 181 158 16 167 168 166 181 338 215 214 253 229 184 182 158 17 166 166 166 189 329 213 241 265 231 183 181 158 18 165 170 164 188 323 210 244 279 229 183 180 158 19 165 170 *170 186 312 209 241 287 227 180 180 159 20 165 167 189 186 304 210 242 285 229 179 180 159 21 166 165 184 185 295 214 260 *283 229 177 178 158 22 165 165 175 184 286 209 266 279 234 175 176 158 23 165 163 172 187 282 209 256 278 255 175 174 159 24 165 163 172 188 321 208 249 286 239 175 174 159 25 166 163 175 187 540 208 242 274 221 173 170 160 26 166 163 180 186 312 207 237 272 220 172 170 160 27 165 162 178 186 297 205 234 267 217 172 *168 160 28 165 162 183 198 283 255 233 256 208 171 166 160 29 165 161 180 '552"243 - 206 232 246 205 171 166 161 30 164 TBT 178 205 233 244 202_ 168 164 162 31 165 177 222 206 252 168 165 Total 5,162 4,984 5,251 5,760 7,262 6,905 6,650 8,108 7,067 5,732 5,383 4,777 Mean 167 166 169 186 259 223 222 262 236 185 174 159 Cfsra 4.01 3.99 4.06 4.47 6.23 5.36 5.34 6.30 5.67 4.45 4.18 3.82 In. 4.61 4.46 4.69 5.15 6.49 6.17 5.95 7.25 6.32 5.12 4.81 4.27 Ac-ft 10,240 9,890 10,420 11,420 14,400 13,700 13,190 16,080 14,020 11,370 10,680 9,480 Calendar year 1957: Max 320 Mln 158 Mean 208 Cfsra 5.00 In. 67.96 Ac-ft 150,800 Water year 1957-58: Max 340 Mln 158 Mean 2OO Cfsra 4.81 In. 65.29 Ac-ft 144, 90O Peak discharge (base, 220 cfs).--Jan. 29 (l p.m.) 272 cfs; Feb. 16 (2 p.m.) 340 cfs; Feb. 25 (l a.m.) 364 cfs; Apr. 21 (7 p.m.) 277 cfs; June 3 (1 p.m.) 319 cfs. * Discharge measurement made on this day. UMPQUA RIVER BASIN 235

3160. pish Creek at Big Camas ranger station, near Toketee Palls, Oreg.

Location. Lat 43°13 I 50", long 122°26'45", in SE£ sec. 10, T. 27 S. , R. 3 E., on right bank a quarter of a mile upstream from Camas Creek, two-thirds of a mile east of Big Camas ranger station, 3| miles south of Toketee Palls, and 5 miles' upstream from mouth. Drainage area. 68.8 sq mi. Records available. October 1947 to September 1958. Prior to October 1952, published as "at Big Camas ranger station." Ga, . Water-stage recorder. Datum of gage is 2,858.52 ft above mean sea level, datum of »929 (levels by The California Oregon Power Co.). Prior to July 9, 1951, water-stage recorder and July 10 to Aug. 10, 1951, staff gage, at site 1,000 ft upstream at datum 13.72 ft higher. Aug. 11 to Nov. 3, 1951, staff gage at site 200 ft downstream at different datum. Nov. 4, 1951, to Sept. 30, 1956, water-stage recorder at same site at datum 1.92 ft higher. Average discharge. 11 years, 261 cfs (189,000 acre-ft per year). Extremes. Maximum discharge during year, 1,930 cfs Feb. 16; minimum daily, 47 cfs Nov. 3-7, 9. 1947-58: Maximum discharge, 9,880 cfs Dec. 22, 1955, affected by failure of power canal diversion dam 2 miles upstream; minimum daily, 35 cfs Nov. 27, 1952. Remarks. Records good. All records presented herein include flow in Pish Creek power canal (completed in June 1952), which diverts water 2 miles above station for power generation at Pish Creek powerplant; diversion discharged to North Umpqua River Jtist below Toketee Palls. Revisions. WSP 1448: Drainage area.

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 50 49 88 309 514 442 *214 373"346 432 216 96 60 2 58 48 85 287 441 3W 212 412 ?T2 3S 60 3 71 47 81 255 391 364 205 392 800 200 93 59 4 66 47 79 233 353 330 198 411 632 192 91 59 5 67 47 Ii 216 328 309 188 436 542 183 89 59 6 71 47 119 210 303 285 187 440 611 179 86 59 7 67 47 360 SI? 31? 268 178 437 581 *174 84 58 8 69 *48 266 217 322 250 172 497 557 167 84 62 9 84 47 199 217 321 233 ISB"170 584 503 164 82 63 10 76 62 171 231 335 220 661 442 158 80 59 11 65 66 156 260 *360 212 199 675 419 156 80 59 12 65 112 141 382 590 202 215 522 427 151 78 62 13 153135~ 497 131 358 532 196 258 437 390 149 76 93 14 152 123 327 539 183 275 417 368 144 77 TT 15 90 187 125 420 1,190 176 278 438 352 142 74 64 16 73 142 149 412 1,780 170 346 537 340 139 74 61 17 67 122 159 569 1,440 164 616 646 326 139 72 59 18 62 179 153 510 1,210 159 722 729 311 143 72 59 19 59 205 *317 423 1,040 157 579 739 301 135 70 58 20 58 167 1,050 375 894 16T 598 706 299 129 69 57 21 56 144 834 327 734 204 ~SSS766 *706 287 126 69 58 22 54 128 477 295 654 198 687 275 124 67 57 23 56 122 365 305 646 201 528 569 324 121 66 58 24 54 122 324 355 944 221 440 £33"745 304 117 65 56 25 58 119 370 333 1,080 221 398 271 113 65 55 26 57 116 463 301 804 214 368 606 247 111 64 55 27 53 107 407 299 632 210 339 568 252 108 *62 54 28 52 103 590 568 522 208 322 513 235 106 62 52 29 51 94 492 - 210 315 442 221 104 62 50 30 51 90 406 Hi 211 324 423 209 101 63 W 31 ii 342 654 212 485 98 62 Total 2,097 3,603 9,078 12,172 19,211 7,194 10,464 16,801 11,670 4,501 2,329 1,786 Mean 67.6 120 293 393 686 232 349 542 389 145 75.1 59.5 Cfsm 0.983 1.74 4.26 5.71 9.97 3.37 5.07 7.88 5.65 2.11 1.09 0.865 In. 1.13 1.95 4.91 6.58 10.38 3.89 5.66 9.08 6.31 2.43 1.26 0.97 Ac-ft 4,160 7,150 18,010 24,140 38,100 14,270 20,760 33,320 23,150 8,930 4,620 3,540 Calendar year 1957: Max 1,610 Mln 40 Mean 216 Cfsm 3.14 In. 42.62 Ac-ft 156,400 Water year 1957-58: Max 1,780 Mln 47 Mean 276 Cfsm 4.01 In. 54.54 Ac-ft 200,200 Peak discharge (base, 900 cfs). Dec. 20 (7 p.m.) 1,200 cfsj Jan. 29 (ll a.m.) 1,650 cfs; Feb. 16 (l a.m.) 1,930 cfs; Feb. 24 (11:30 p.m.) 1,280 cfs; Apr. 17 (8 p.m.) 943 cfs. * Discharge measurement made on this day. 236 UMPQUA RIVER BASIN

3165. North Umpqua River above Copeland Creek, near Toketee Palls, Oreg.

Location. Lat 43°17'45", long 122°32'10", in NW£ sec. 24, T. 26 S., R. 2 E., on right bank half a mile upstream from Copeland Creek and 4| miles west of Toketee Palls. Drainage area. 475 sq mi. Records available. September 1949 to September 1958. Monthly discharge only September 1949, published in WSP 1318. Prior to October 1952, published as "above Copeland Creek." Gage. Water-stage recorder. Altitude of gage is 1,580 ft (from river-profile map). Average discharge. 9 years, 1,702 cfs (1,232,000 acre-ft per year). Extremes. Maximum discharge during year, 8,780 cfs Feb. 16 (gage height, 8.80 ft); minimum daily, 702 cfs Oct. 6, 26. 1949-58: Maximum discharge, 25,000 cfs Dec. 22, 1955 (gage height, 14.84 ft), from rating curve extended above 10,000 cfs by logarithmic plotting; minimum daily, 570 cfs Sept. 5, 1955. Remarks. Records good except those for period of no gage-height record, which are fair. Regulation by powerplants upstream; slightly regulated by Diamond Lake and by storage in Lemolo Reservoir (see p. 232). No diversion above station. Revisions (water years). WSP 1448: 1953(M) , 1954, drainage area.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 2.9 690 4.0 1,510 6.0 3,750 9.0 9,080 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 964 866 792 1,840 2,680 2,500 1,620 1,940 2,120 1^490 1,2OO 964 2 992 708 i.c^Eo 1,750 2,590 2,310 1,740 1,990 2,280 1,440 915 1,080 3 1,160 m 978 1,910 2,560 2,040 1,720 2,070 2,710 1,380 1,160" 1,110 4 1,120 859 936 1,700 2,280 2,240 1,660 2,110 2,640 1,310 1,110 1,120 5 1,010 817 873 1,550 2,050 2,160 1,560 2,210 2,400 1,370 1,050 1,040 6 702 852 1,110 1,440 1,950 2,030 1,500 2,190 2,650 1,240 1,160 780 7 55? 901 2,450 1,720 2,050 1,880 1,530 2,060 2,730 *1,420 1,020 887 8 1,070 845 1,780 1,730 1.920 1,820 1,590 2,210 2.750 1,540 1,020 999 9 999 *708 1,560 1,720 2,310 1,470 1,450 2,500 2,600 1,510 971 992 10 978 774 1,360 1,800 *2,300 1,740 1,550 2,590 2,390 1,520 950 992 11 845 810 1,330 1,880 2,260 1,850 1,550 2,790 2,260 1,310 1.120 971 12 824 894 1,260 2,430 2,740 1,810 1,420 2,550 2,290 1,160 1,270 922 13 915 2,520 1,240 2,230 2,900 1,750 1,500 2,540 1,960 1,320 1,070 810 14 1,170 1,760 880 2,150 2,910 1,690 1,750 2,400 1,860 1,360 1,060 894 15 1,170 1,460 943 2,620 5,280 1,490 1,900 2,160 1,890 1,350 1,040 971 16 1,010 1,100 1,130 2,520 6,020 1,510 1,810 2,520 1,890 1,310 985 971 17 978 1,050 1,370 3,060 5,900 1,400 2,560 2,600 1,950 1,290 1,090 971 18 964 1,270 1,340 2,780 a5,200 1,400 2,610 2,250 1,840 1,320 1,030 978 19 798 1,720 1,940 2,430 a4,500 1,410 2,400 2,870 1,690 1,060 1,140 887 20 873 1,390 *4,570 2,120 a5,800 1,570 2,450 2,750 1,760 1,080 1,050 780 21 824 1,210 4,240 1,990 a5,500 1,410 5,140 *2,760 1,550 1,300 1.070 804 22 894 1,250 2,760 1,940 a2,800 1,450 5,020 2,900 1,580 1,140 1,080 880 23 999 887 2,080 1,910 a2,800 1,430 2,750 2,870 1,740 1,240 915 922 24 908 936 2,080 2,240 a3,500 1,450 2,420 2,810 1,930 1,240 1,080 922 25 804 1,110 2,330 2,010 3,960 1,520 2,550 2,630 1,680 1,120 1,160 810 26 702 1,120 2,910 1,930 5,260 1,650 2,140 2,580 1,720 900 1,030 768 27 774 1,150 2,390 1,940 2,910 1,640 1,980 2,580 1,740 1,130' 1,080 908 28 838 852 3,000 3,250 2,620 1,580 1,820 2,460 1,500 1,120 *1,080 798 29 908 873 2,920 5,650 - 1,570 1,720 2,290 1,460 1,160 1,100 1,010 30 824 817 2,280 4,080 1,580 1,960 2,220 1,490 1,130 945 880 31 943 2,110 3,170 *1,560 2,290 1,020 1.110 Total 28,972 32,023 57,952 71,470 91,110 52,270 58,710 75,470 61,070 58,650 35,079 27,821 Mean 935 1,067 1,869 2,305 5,254 1,686 1,957 2,454 2,056 1,247 1,067 927 Cfsm ------" In. _ _ _ _ ------Ac-ft 57,470 63,520 114,900 141,800 180,700 103,700 116,400 149,700 121,100 76,660 65,610 55,180 Calendar year 1957: Max 6,530 Min 696 Mean 1,544 Cfam 3.25 In. 44.14 Ac-ft 1,118,000 Water year 1957-58: Max 8,020 Min 702 Mean 1,722 Cfsm 3.63 In. 49.22 Ac-ft 1,247,000

* Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records and records for sta below Lemolo Reservoir, near Toketee Falls, and Fish Creek at Big Camas ranger station, near Toketee Palls. UMPQUA RIVER BASIN 237

3167. Steamboat Creek near Glide, Oreg.

Location. Lat 43°21'00", long 122°43'40", in N| sec. 32, T. 25| S., R. 1 E., on right bank in Canton Creek Forest Service Park, 0.5 mile upstream from mouth and 19 miles northeast of Glide. Drainage area. 227 sq mi. Records available. October 1955 to September 1958. Prior to June 1956, supplemental peak discharges and discharge measurements only. Gage. Water-stage recorder. Datum of gage is 1,128.55 ft above mean sea level (levels by Bureau of Public Roads). Prior to June 14, 1956, crest-stage gage at site 100 ft upstream. Extremes. Maximum discharge during year, 15,900 cfs Dec. 20 (gage height, 13.07 ft); minimum, 38 cfs Sept. 6-8. 1955-58: Maximum discharge, 26,900 cfs Dec. 22, 1955 (gage height, 17.96 ft, from floodmarks), from rating curve extended above 13,000 cfs by slope-area measurement of peak flow; minimum, 31 cfs Sept. 24, 1957. Remarks. Records good except those for periods of shifting control, which are fair, and those for period of no gage-height record, which are poor. Cooperation.--One discharge measurement furnished by Douglas County Water Resources engineer.

Rating tables, water year 1957-58, except periods of shifting control (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 16 Feb. 17 to Sept. 30 0.7 3.0 1,180 0.4 2.0 580 1.0 5.0 3,060 .7 80 3.0 1,240 1.2 151 8.0 6,880 1.0 155 5.0 3,060 1.5 253 12.0 13,800 1.5 345 7.0 5,490 2.0 495 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec . Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 104 57 175 1,200 2,240 1,300 964 570"602 305 211 71 42 2 108 55 219 1,180 1,620 1,080' *1,010 353 241 69 41 3 286 54 212 1,120 1,330 943 999 530 792 269 67 41 4 503 54 191 948 1,020 815 815 495 767 214 66 41 5 282 54 181 871 843 773 755 490 520 183 66 40 6 282 54 826 934 757 707 749 471 683 162 66 40 364 54 3,760 1,000 685 647 749 455 956 149 64 38 7 *134 8 T98 54 1,770 948 756 613 695 444 SIS 62 40 9 163 *54 969 a900 904 586 '695659 462 815 128 60 49 10 132 70 685 a950 *2,400 580 471 647 120 60 48 11 106 152 501 al,500 1,730 570 743 471 520 115 59 45 12 93 414 599 a4,000 2,730 560 743 599 471 108 56 46 13 181 5,200 539 a3,800 2,600 545 773 337 408 105 54 80 14 303 2,270 294 a5,000 2,880 515 707 309 554 100 52 9066" 15 195 1,250 274 5,140 9,100 500 615 313 515 98 51 16 140 718 290 2,490 10,400 476 618 350 295 96 51 60 17 112 484 586 5,440 4,760 458 1,210 568 265 94 51 57 18 95 960 1,190 2,720 3,180 458 1,660 572 241 92 49 54 19 84 1,120 6,140 2,750 2,290 466 1,260 565 237 90 49 52 20 78 692 *15,600 1,520 1,750 602 1,810 *555 233 86 48 52 21 73 473 *8,360 1,150 1,400 828 2,640 529 214 84 48 52 22 70 364 3,520 976 1,190 767 2,350 521 197 82 46 52 23 68 308 1,940 990 1,140 731 2,090 329 214 80 45 52 24 68 298 2,200 2,610 1,610 815 1,720 408 285 78 45 51 25 70 278 3,720 2,500 3,480 791 1,520 317 253 76 45 49 26 70 249 4,940 1,720 2,620 874 1,060 309 218 75 45 48 27 66 219 3,040 1,330 2,000 755 874 273 218 75 43 48 28 63 208 7,460 4,030 1,600 671 767 297 211 75 *43 46 29 60 188 4,330 8,500 _ 618 689 241 190 75 42 46 50 585~8~ 175 2,410 4,840 613 641 218 180 73 42 46 31 1,590 3,210 695 557 73 42 Total 4,555 14,560 76,111 69,867 68,995 21,352 52,378 11,884 12,228 3,641 1,657 1,512 Mean 140 485 2,455 2,254 2,464 689 1,079 383 408 117 55.5 50.4 Cfsm 0.617 2.14 10.8 9.93 10.9 5.04 4.75 1.69 1.80 0.515 0.236 0.222 In. 0.71 2.39 12.47 11.45 11.30 3.50 5.30 1.95 2.00 0.60 0.27 0.25 Ac-ft 8,590 28,880 151,000 138,600 136,800 42,350 64,220 23,570 24,250 7,220 3,290 3,000 Calendar year 1957: Max 13,600 Min 52 Mean 795 Cfam 3.49 In. 47.40 Ac-ft 573,800 Water year 1957-58: Max 13,600 Min 38 Mean 873 Cfsm 3.85 In. 52.19 Ac-ft 651,800 Peak discharge (base, 4,800 cfs). --Nov. 15 (7:50 a.m.) 4,840 cfs (6.50 ft); Dec. 20 (9 p.m.) 15,900 cfs (13.07 ft); Dec. 28 (10 a.m.) 9,640 cfs (9.74 ft); Jan. 12 (time unknown) 5,300 cfs (6.85 ft); Jan. 29 (2 p.m.) 11,60O cfs (10.82 ft); Feb. 16 (l a.m.) 14,800 cfs (12.50 ft). * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records, recorded range in stage, and records for Rock Creek near Glide and Little River at Peel. Note.--Shifting-control method used Oct. 1 to Nov. 11, Jan. 50 to Feb. 15. 238 UMPQUA RIVER BASIN

3176. Rock Creek near Glide, dreg.

Location. Lat 43°20 ! 35", long 122°59'30", in NE^NE^ sec. 1, T. 26 S., R. 3 W. , on right bank 1 mile upstream from mouth and 6 miles northeast of Glide. Drainage area. 97.4 sq mi. Records available. June 1957 to September 1958. Gage. Water-stage recorder. Datum of gage Is 933 ft above mean sea level (plane-table survey). Extremes. Maximum discharge during year, 8,230 cfs Dec. 20 (gage height, 12.22 ft); min- imura, 20 cfs Sept. 7. 1957-58: Maximum discharge, that of Dec. 20, 1957; minimum, 18 cfs Sept. 23-25, 1957. Flood of Dec. 22, 1955, reached a stage of 14.83 ft, from floodmarks (discharge, 12,300 cfs) and that of Dec. 11, 1956, a stage of 15.46 ft, from floodmarks (discharge, 13,400 cfs); discharges from rating curve extended above 5,400 cfs on basis of slope- area measurement at gage height 14.83 ft. Remarks. Records good except those for period of shifting control, which are fair, and those for periods of no gage-height record, which are poor. No regulation or diver sion above station. Cooperation. One discharge measurement furnished by Douglas County Water Resources engineer.

Rating table, water year 1957-58, except period of shifting-control (gage height, in feet, and discharge, in cubic feet per second) 2.0 170 6.0 1,800 3.0 410 8.0 3,400 1.0 4.0 760 11.0 6,600 1.5 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 85 35 98 756 1,540 756 542 300 170 120 58 25 2 80 34 123 672 1,040 655 518 278 184 117 57 23 3 200 32 109 577 868 552 *458 258 250 96 55 22 4 240 31 100 488 704 485 419 237 255 83 54 22 5 220 50 9_3_ 446 605 470 598 226 200 80 54 22 6 240 *31 541 428 521 451 592 216 196 75 55 22 7 270 31 1,740 416 476 598 571 206 253 72 53 21 8 200 31 872 389 443 380 550 196 419 70 55 21 9 140 32 521 356 511 586 332 184 577 *68 32 25 10 100 50 374 57T 1,000 592 328 176 290 68 31 24 11 90 100 298 708 800 589 520 172 244 65 50 24 12 80 500 248 1,520 1,070 568 318 170 216 62 29 24 13 150 1,540 216 1,470 *1,510 559 318 154 190 62 29 64 14 220 1,120 190 980 1,620 340 295 150 168 59 28 5? 15 160 704 170 1,100 4,060 522 269 142 156 58 28 56 16 120 416 204 948 4.940 302 274 137 144 55 28 52 17 90 298 584 1,200 2,480 286 448 135 155 55 27 50 18 80 640 *692 1,080 1,600 274 577 152 126 55 27 50 19 70 605 3,490 804 1,140 276 552 126 123 54 26 29 20 65 401 6,480 700 858 312 784 *120 119 52 26 29 21 60 298 *5,080 656 692 568 1,180 116 112 50 26 29 22 55 230 2,280 560 602 548 1,200 116 107 49 25 31 23 50 198 1,400 528 566 568 1,060 126 109 48 24 30 24 48 165 1,660 822 768 586 850 156 113 47 24 50 25 50 145 2,010 876 1,610 419 684 124 106 46 24 29 26 55 132 2,350 708 1,590 446 566 112 98 45 24 29 27 50 120 1,950 622 1,140 598 479 116 98 45 Z4 30 28 45 124 3,640 1,460 944 562 419 168 96 42 *24 29 29 40 106 2,180 2,920 - 548 568 120 88 41 24 29 30 38 98 1,340 2, 410 548 552 109 85 40 24 29 31 36_ 971 1,860 443 122 5J9 25^ Total 3,427 8,077 41,784 28,834 55,098 12,345 15,581 5,100 5,207 1,914 884 868 Mean 111 269 1,548 930 1,254 398 515 165 174 61.7 28.5 28.9 Cfsm 1.14 2.76 13.8 " 9.55 12.9 4.09 5.27 1.69 1.79 0.655 0.295 0.297 In. 1.31 3.08 15.95 11.01 15.40 4.71 5.87 1.95 1.99 0.75 0.34 0.33 Ac-ft 6,800 16,020 82 , 880 57,190 69,620 24,490 30,510 10,120 10,330 5,800 1,750 1,720 Calendar year 1957: Max - Min - Mean - Cfsm - In. - Ao-ft - Water year 1957-58: Max 6,480 Min 21 Mean 435 Cfsm 4.47 In. 60.67 Ao-ft 315,200 Peak discharge (base, 3,000 cfs). Dec. 20 (10 p.m.) 8,250 cfs (12.22 ft); Dec. 28 (9 a.m.) 4,190 cfs (8.88 ft); Jan. 29 (2 p.m.) 3,800 cfs (8.45 ft); Feb. 16 (2:30 a.m.) 6,680 cfs (11.06 ft).______* Discharge measurement made on this day. Note.--No gage-height record Oct. 1 to Nov. 5, Nov. 7-12, July 7, 8; discharge estimated on basis of weather records, recorded range in stage, and records for Steamboat Creek near Glide and Little River at Peel. Shifting-control method used May 2 to Sept. 30. UMPQUA RIVER BASIN 239

3180. Little River at Peel, Oreg.

Location. Lat 43°15'10", long 123°01'30", in NW£ sec. 2, T. 27 S., R. 3 W., on left bank 0.6 mile southeast of Peel and 0.8 mile downstream from Cavitt Creek. Drainage area. 177 sq mi. Records available. August 1954 to September 1958. Gage.--Water-stage recorder. Datum of gage is 828.33 ft above mean sea level, datum of T"929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 11,800 cfs Dec. 20 (gage height, 13.71 ft), from rating curve extended above 5,900 cfs as explained below; minimum, 20 cfs Sept. 7, 8 (gage height, 1.57 ft). 1954-58: Maximum discharge, 21,100 cfs Dec. 11, 1956 (gage height, 19.63 ft), from rating curve extended above 5,900 cfs on basis of slope-area measurement at gage height 16.55 ft; minimum, 15 cfs Sept. 24, 25, 1957 (gage height, 1.55 ft). Maximum discharge known, 22,700 cfs Nov. 22, 23, 1953 (gage height, 20.6 ft, from floodmark), from rating curve extended above 5,900 cfs on basis of slope-area measure ment at gage height 16.55 ft. Remarks. Records good. No regulation. Small diversions for rural domestic use and irrigation above station. Cooperation. One discharge measurement furnished by Douglas County Water Resources engineer.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to June 3 June 4 to Sept. 30 1.7 25 4.0 820 1.5 16 3.0 335 2.0 65 6.0 2,300 1.7 31 4.0 820 2.5 173 8.0 4,300 2.O 72 5.O 1,5OO 3.0 335 10.0 6,800 2.5 180 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 97 41 126 772 1,480 982 874 375 184 172 40 24 78 37 131 695 1,110 754 868 347 269 195 40 23 2 *820 3 258 37 122 610 880 665 324 1,120 TB7 39 22 4 339 36 116 515 712 575 660 297 988 128 38 22 5 347 *55 109 460 605 550 560 283 580 114 38 22 6 324 35 283 451 515 505 530 266 500 104 36 21 7 375 35 1,580 447 482 482 491 252 662 98 36 21 257 36 907 419 500 468 455 246 1,150 90 36 21 *88 9 173 35 535 387 604 491 435 240 886 35 23 10 136 60 387 US 1,040 500 455 236 630 85 34 26 11 111 120 301 615 826 482 478 240 486 79 33 25 12 95 164 252 1,700 1,160 464 486 240 411 74 32 24 13 129 2,010 221 1,640 *1,530 460 510 206 335 72 31 33 14 233 2,O4O 192 1,120 2,190 439 486 189 293 69 31 49 15 170 922 176 1,160 4,860 411 431 178 259 67 31 3T 16 131 525 209 1,000 5,920 379 431 178 232 66 30 28 17 109 383 625 1,370 2,880 363 598 178 208 64 29 27 18 90 767 *1 , 080 1,200 1,840 347 718 176 190 64 29 25 19 79 976 3,520 886 1,380 343 610 173 180 61 28 25 20 70 605 6,530 748 1,150 403 620 *160 170 58 28 25 21 65 423 *6,750 730 916 525 916 156 155 55 28 25 22 60 324 2,660 620 766 496 1,280 150 145 53 27 26 23 56 259 1,500 684 685 555 1,160 163 148 53 26 26 24 54 230 1,450 1,240 1,410 590 964 227 165 52 26 25 25 58 203 1,920 1,090 3,310 580 784 178 142 49 26 25 26 64 184 2,610 838 2,240 600 650 153 130 46 25 24 27 53 163 2,340 706 1,720 530 550 150 138 45 25 24 28 49 158 3,480 2,800 1,290 491 473 195 128 43 *25 25 29 45 141 2,400 6,740 _ 510 427 150 118 42 25 25 30 44 129 1,470 3,420 590 399 T43~134 114 41 25 24 31 42 1,010 ' 796 IP- 25 Total 4,158 11,113 44,992 37,632 44,001 16,356 19,119 6,583 11,116 2,419 957 766 Mean 134 370 1,451 1,214 1,571 528 637 212 371 78.0 30.9 25.5 Cfsm 0.757 2.09 8.20 6.86 8.88 2.98 3.60 1.20 2.10 0.441 0.175 0.144 0.87 2.33 9.45 7.91 9.25 3.44 4.02 1.38 2.34 0.51 0.20 0.16 Ac-ft 8,250 22,040 89,240 74,640 87,270 32,440 37,920 13,060 22,050 4,800 1,900 1,520 Calendar year 1957: Max 6,750 Hln 16 Mean 473 Cfam 2.67 In. 36.30 Ac-ft 342,800 Water year 1957-58: Max 6,750 Hln 21 Mean 546 Cfam 3.08 In. 41.86 Ac-ft 395,100

Peak discharge (base, 6,000 cfa). Dec. 20 (11 p.m.) 11,800 cfs (13.71 ft); Jan. 29 (12 m.) 10,400 cfs (12.71 ft); Feb. 16 (12:50 a.m.) 8.560 efs (11.20 ft).______* Discharge measurement made on this day. 240 UMPQUA RIVER BASIN

3192. Sutherlin Creek at Sutherlin, Oreg.

Location. Lat 43°23'20", long 123°18 I 10", In SW£ sec. 16, T. 25 S., R. 5 W., on right bank at downstream side of Waite Street bridge In Sutherlin and about 11 miles upstream from Cooper Creek. Drainage area. 16.4 sq ml. Records available. October 1955 to September 1958. Gage. Staff gage and crest-stage Indicator. Gage read once dally, twice dally at stages over 4.0 ft. Datum of gage is 512.46 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 1,560 cfs Dec. 21 (gage height, 8.24 ft), from rating curve extended above 560 cfs on basis of slope-area measurement at gage height 7.77 ft; no flow for several months. 1955-58: Maximum discharge, that of Dec. 21, 1957; no flow for several months each year. Remarks. Records good except those for periods of backwater from aquatic vegetation or debris, which are fair. No regulation. A few small diversions by pumping for Irrigation above station.

Rating table, water year 1957-58, except periods of backwater from aquatic vegetation or debris (gage height, In feet, and discharge, In cubic feet per second) 1.5 0 2.1 8.5 4.0 133 1.6 .1 2.5 24 4.5 205 1.7 .3 3.0 50 5.0 320 1.8 1.0 3.5 83 7.0 1,040 1.9 2.5 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 0.5 0.2 1.2 28 63 28 ~SS30 6.9 1.4 0.2 2 .6 .2 2.3 34 34 24 ~9-.211 5.3 .3 3 1.0 1.4 23 27 21 22 16 .4 4 2.1 <$ 1.2 20 22 18 17 8.2 15 7? 5 2.5 **.!. 1.1 19 23 16 14 7.2 9.6 .2 6 3.2 .1 2.3 18 2S"20 18 18 6.9 6.9 .1 7 ±4 .1 14 16 15 17 5.9 20 .1 8 T7? .2 11 16 34 19 13 5.6 ~ss82 Q-0 9 1.0 .1 8.5 18 30 24 15 4.7 10 .7 .4 7.2 17 51 19 12 4.1 14 0 11 2.3 .8 5.3 39 34 17 11 4.4 9.6 0 12 1.7 1.7 5.0 129 102 15 9.9 3.8 *7.2 0 13 3.5 IE-19 4.7 120 51 22 8.8 2.7 5.3 0 14 3.8 4.1 54 158 19 7.9 2.5 3.2 0 15 2.3 16 4.7 38 655 15 6.9 2.1 2.3 0 16 1.1 12 5.9 28 *655 13 9.6 1.7 1.5 0 17 .9 9.2 *48 41 91 11 11 1.3 1.1 0 18 .6 6.6 *178 24 49 10 13 1.2 .7 0 19 .4 5.6 424920' 23 44 9.2 12 1.2 .4 0 20 .3 4.1 28 32 *8.8 15 1.0 .4 0 21 .3 2.7 *760 34 26 9.2 15 .8 .3 *0 22 0 2.5 174 30 23 lT^l£ 28 .6 .2 0 23 it 2.3 62 26 20 27 1.4 .3 0 24 .2 2.1 55 36 145 9.9 30 2.9 .4 0 25 .3 1.7 51 33 3EO 14 24 1.5 .4 0 26 .3 1.7 157 30 91 12 20 1.2 .3 0 27 .2 1.2 75 24 54 11 17 .9 .3 0 28 .2 1.1 241 110 38 9.9 12 1.5 .2 0 29 .2 1.0 85 *320 - 9.6 9.9 1.2 0 30 .2 .9 40 380 16 *8 .5 1.1 ^ 0 31 .2 32 T5T 53 ' 0 Total 37.3 109.8 3,381.9 1,877 2,918 511.1 482.5 105.5 232.5 1.5 0 0 Mean 1.20 3.66 109 60.5 104 16.5 16.1 3.40 7.75 0.05 0 0 Cfsm 0.073 0.223 6.65 3.69 6.34 1.01 0.982 0.207 0.473 0.0030 0 0 In. 0.08 0.25 7.67 4.26 6.62 1.16 1.09 0.24 0.53 0.003 0 0 Ac-ft 74 218 6,710 3,720 5,790 1,010 957 209 461 3.0 0 0 Calendar year 1957: Max 920 Mln 0 Mean 27.8 Cfsm 1.70 In. 23.02 Ac-ft 20,140 Water year 1957-58: Max 920 Mln 0 Mean 26.5 Cfsm 1.62 In. 21.90 Ac-ft 19,150 Peak discharge (base, 400 cfs). Dec. 21 (about 1 a.m.) 1,560 cfs (8.24 ft); Jan. 29 (about 1 p.m.) 592 cfs (5.82 ft); Feb. 16 (about 1 a.m.) 1,320 cfs (7.69 ft); Feb. 25 (about 1 a.m.) 742 cfs (6.25 ft). * Discharge measurement or observation of no flow made on this day. ** Field estimate made on this day. Mote. Backwater from aquatic vegetation or debris Mar. 1 to June 27, July 1. UMPQUA RIVER BASIN 241

3195. North Umpqua River at Winchester, Oreg.

Location. Lat 43°16'20", long 123°24'40", In NW^NE^ sec. 33 (revised), T. 26 S., R. 6 W., on right bank 1.8 miles upstream from confluence with South Umpqua River and 3 miles west of Winchester. Drainage area. 1,344 sq mi. Records available.--October 1908 to December 1913, October 1923 to September 1929, August 1954 to September 1958. Prior to December 1908 monthly discharge only, published in WSP 1318. Gage.--Water-stage recorder. Altitude of gage is 370 ft (from river-profile map). Oct. 1, 1908, to Dec. 31, 1913, and Oct. 1, 1923, to Sept. 30, 1929, staff gage at site 4.8 miles upstream at different datums. Average discharge. 15 years, 3,605 cfs (2,610,000 acre-ft per year). Extremes . Maximum discharge during year, 58,600 cfs Dec. 21 (gage height, 20.14 ft); minimum, 627 cfs Sept. 7; minimum daily, 746 cfs Sept. 7. 1908-13, 1923-29, 1954-58: Maximum discharge, 100,000 cfs Nov. 23, 1909 (gage height, 28.1 ft, site and datum then in use), from rating curve extended above 42,000 cfs by logarithmic plotting; minimum, 566 cfs Sept. 27, 1956. Remarks. Records excellent except those for period of backwater from moss, which are good. Some regulation by powerplants upstream and flow slightly affected by storage in Lemolo Reservoir (see p. 232) and Diamond Lake. Small diversions for irrigation above station. Revisions (water years). WSP 1448: 1909-12, drainage area.

Rating tables, water year 1957-58, except period of backwater from moss (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 20 Dec. 21 to Sept. 30 2.1 860 6.0 7,800 2.0 730 6.0 7,600 3.0 1,850 10.0 20,000 3.0 1,820 12.0 27,500 4.0 3,420 16.0 42,000 4.0 3,300 18.0 50,000 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,280 1,110 1.360 6,510 11,800 7.480 5,590 *5, 750 2,900 2,030 1,160 1,200 2 1,560 1,050 1,420 5,610 9,050 6,310 5,570 3,550 2,920 2.160 1.320 *990 3 1,770 896 1,640 5,320 7,530 5,610 5,500 5,550 4,050 2,030 990 1.260 4 2.520 878 1,530 4,770 6,450 5,040 4,660 5,550 6,000 1,920 1,290 1,120 5 2,420 *1,020 1,440 4,100 5,610 4,790 4,220 5,550 4,200 1,760 1,300 1,130 6 2,000 986 1,520 5.980 5,010 4,600 5,940 5,450 3,840 1,700 1,180 1,060 7 2,280 1,020 10,400 4,100 4,710 4,260 3,710 5,270 5,100 1,650 1,210 746 8 2,190 1,070 8,400 4,060 4,900 4,200 3,820 5,220 7,680 1,740 1,090 855 9 1,760 1,010 4,980 4,020 5,080 4,000 5,570 5,450 6,070 1,690 1,060 1,000 10 1,570 914 5,680 4,080 8,600 5,770 5,520 5,550 4,820 1,620 1,020 1,060 11 1,450 1,210 3,030 5,760 7,940 4,020 5,680 5,750 3,900 1,580 1,000 1,060 12 1,250 1,590 2,710 11,100 9,710 3,920 3,570 5,840 *3,590 1,570 1,210 891 15 1,290 8,890 2,420 14,600 12,100 3,860 3,660 5,540 5,190 1,410 1,300 1,010 14 1,880 10,700 2,180 8,860 13,100 5,700 3,750 5,430 2,850 1,580 1,120 1,090 15 2,060 6,790 1,760 9,300 29,400 3,460 3,750 3,040 2,640 1,590 1,100 1,060 16 1,730 4,180 1,930 9,530 46.200 3,080 3,620 2,980 2,560 1,520 1,080 1,090 17 1,470 2,920 *5,550 10,200 24,700 2.880 4,140 3,200 2,510 1,500 1,010 1,080 18 1,420 5,200 6,820 10,900 16,400 3,000 7,050 3,440 2,450 1,470 1,150 1,070 19 1,300 5,880 15,700 8,090 12,300 *2,880 6,050 5,190 2,230 1,490 1,100 1,070 20 1,100 4,500 40,500 6,710 10,000 3,010 6,000 5,570 2,210 1,260 1,200 960 21 1,120 5,240 *45.500 6,400 8,120 3,460 8,630 3,460 2,150 1,260 1,150 855 22 1,070 2,720 20,200 5,520 7,120 3,680 10.100 5,430 1,950 *1,460 1,120 882 25 1,140 2,360 10,900 5,120 6,760 3,640 9,350 3,550 2,000 1,300 1,150 1,020 24 1,220 1,910 9,190 7,600 9,600 3,860 8,040 5,620 2,420 1,390 930 990 25 1,140 1,910 15,500 9,140 21,000 5,940 6,760 3,480 2,330 1,400 1,T60 1,000 26 1,050 1,960 18,500 7,560 15,600 4,400 5,720 3,170 2,140 1,240 1,220 891 27 959 1,880 14,400 6,110 11,800 4,120 5,080 3,030 2,160 1.070 1,090 786 28 977 1,770 25, 700 13,400 9,160 3,750 4,560 3,170 2,140 1,290 1,140 960 29 1,040 1,520 19,100 52.400 _ 3,750 4,040 2,880 1.910 1,260 1,140 873 50 1,100 1,440 11,200 *28,600 5,920 5,680 2.570 1,910 1,290 1,190 1,070 51 1,020 8,020 17,000 4,540 2,640 1, 280 1,000 Total 45,916 80,524 310,760 280,050 359,750 126,910 154,510 105,370 96,820 47,510 35,080 30,129 Mean 1,481 2,677 10,020 9,034 12,130 4,094 5,150 3,355 3,227 1,533 1,132 1,004 Ac-ft 91,070 159,300 616,400 555,500 673,900 251,700 506,500 205,000 192,000 94,230 69,580 59,760 Calendar year 1957: Max 45,500 Min 756 Mean 4,105 Ac-ft 2,970,000 Water year 1957-58: Max 46,200 Mln 746 Mean 4,524 Ac-ft 5,275,000 Peak discharge (base, 20,000 cfs). Dec. 21 (2:50 a.m.) 58,600 cfs (20.14 ft); Dec. 28 (3 p.m.) 27,200 cfs (ll.90 ft); Jan. 29 (7:30 p.m.) 47,200 cfs (17.31 ft); Feb. 16 (7 a.m.) 54,500 cfs (19.12 ft); Feb. 25 (10 a.m.) 25,000 cfs (10.72 ft). Discharge measurement made on this day. Note. Backwater from moss May 15 to July 10. 242 UMPQUA RIVER BASIN

3207. Calapooya Creek near Oakland, Oreg.

Location. Lat 43°24'10", long 123°21 I 45", in NW^ sec. 13, T. 25 S., R. 6 W., near center of span on downstream side of county bridge half a mile downstream from Williams Creek, 2.5 miles northwest of Sutherlin, and 3.5 miles southwest of Oakland. Drainage area. 210 sq mi. Records available. October 1955 to September 1958. Gage. Wire-weight gage and crest-stage indicator. Wire-weight gage read once daily, twice daily above 4.0 ft gage height. Datum of gage is 371.26 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 18,000 cfs Dec. 21 (gage height, 19.90 ft), from rating curve extended above 5,000 cfs as explained below; minimum observed, 7.1 cfs Sept. 5. 1955-58: Maximum discharge, 20,300 cfs Dec. 26, 1955 (gage height, 20.47 ft), from rating curve extended above 5,000 cfs on basis of contracted-opening measurement of peak flow; minimum, 5.4 cfs Sept. 24, 25, 1957. Remarks. Records good. No regulation above station. Diversion above station for munici- paT"supply of cities of Sutherlin and Oakland. Small diversions by pumping for irriga tion above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Backwater from debris Sept. 29, 30) Oct. 1 to Dec. 21 Dec. 22 to Sept. 30 2.2 6.0 1,300 5.8 4.4 445 2.3 9.0 2,350 9.0 6.5 1,230 2.5 42 12.0 4,000 2.1 19 9.0 2,330 2.7 64 15.0 6,900 2.3 33 12.0 4,, 000 3.0 120 18.0 12,000 2.9 99 14.0 5,800 3.5 300 181 17.0 9,900 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 36 28 74 878 1,580 1,000 647 *315 137 81 15 13 2 41 28 80 806 1,150 790 654 280 249 ~89117 15 11 3 135 27 86 654 902 682 552 246 433 14 9.4 4 153 *26 75 556 722 570 481 225 502 80 13 8.7 5 180 26 70 490 608 529 451 199 315 67 13 7.1 6 220 25 82 451 511 487 424 188 241 62 IS-16 10 7 288 24 1,230 403 535 436 454 171 297 56 9.4 8 144 24 912 391 542 463 412 157 1.140 52 is 9.0 9 92 24 630 364 750 577 373 145 706 53 13 9.4 10 64 25 476 373 1,300 570 349 137 457 50 13 13 11 54 90 360 696 974 529 320 129 213 46 13 15 12 43 64 284 2,220 1,470 481 287 141 2S5 41 13 14 13 52 720 232 2,360 1,660 502 251 123 *225 36 13 18 14 256 1,170 180 1,420 2,160 439 270 114 185 37 12 23 15 138 1,020 165 1,090 6,350 400 239 107 160 39 12 28 16 77 594 171 846 9.260 385 253 98 138 33 12 18 17 62 492 1,000 918 3,580 331 258 93 123 32 11 16 18 47 352 *1,890 686 1,960 312 457 88 110 32 9.9 16 19 43 448 4,000 726 1,400 *287 463 86 99 33 9.9 15 20 42 376 9,550 762 1,070 280 511 85 98 32 9.0 12 21 41 288 10,500 878 846 289 822 82 91 31 8.4 12 22 38 220 4,400 742 710 263 1,180 76 85 *27 8.7 12 23 36 171 2,150 686 654 320 1,170 83 81 25 8.4 12 24 35 144 1,700 942 1,750 328 1,100 95 99 26 8.4 12 25 35 120 1,800 934 4,200 322 846 93 99 24 9.0 12 26 34 108 3,000 806 2,740 379 668 87 85 22 9.0 11 27 33 94 2,750 696 1,890 352 633 82 89 22 9.0 10 28 32 86 5,200 2,150 1,330 320 469 94 85 21 9.4 9.9 29 32 80 2,680 4,810 - 322 439 94 81 18 9.9 9.4 30 19 69 1,660 *4, 800 325 367 85 TT_ 17 12 9.9 31 30 1 , 190 2,980 703 95 17 13 Total 2,542 6,963 58,577 37,514 52,604 13,973 15,800 4,093 6,985 1,318 360.0 385.2 Mean 82.0 232 1,890 1,210 1,879 451 527 132 233 42.5 11.6 12.8 Cfsra 0.390 1.10 9.00 5.76 8.95 2.15 2.51 0.629 1.11 0.202 0.055 0.061 In. 0.45 1.23 10.37 6.64 9.32 2.47 2.80 0.72 1.24 0.23 0.06 0.07 Ac-ft 5,040 13,810 116,200 74,410 104, 300 27,720 31,340 8,120 13,850 2,610 714 764 Calendar year 1957: Max 10,500 Min 5.4 Mean 546 Cfsm 2.60 In. 35.27 Ac-ft 395,300 Water year 1957-58: Max 10,500 Min 7.1 Mean 551 Cfsm 2.62 In. 35.60 Ao-ft 398,900 Peak discharge (base, 6,300 cfs).--Dec. 21 (about 4 a.m.) 18,000 cfs (19.90 ft); Dec. 28 (about 6 a.m.) 6,790 cfs (14.9 ft); Jan. 29 (about 9 p.m.) 8,490 cfs (16.12 ft); Feb. 15 (about 12 p.m.) 15,900 cfs (19.32 ft).______* Discharge measurement made on this day. UMPQUA RIVER BASIN 243

3210. Umpqua River near Elkton, Oreg.

Location. --La t 43°35'10", long 123°33'30", In NVfir sec. 8, T. 23 S., R. 7 W., on right bank 3| miles south of Elkton and 8 miles upstream from Elk Creek. Drainage area. 3,683 sq mi. Records available. October 1905 to September 1958. Gage. Water-stage recorder. Datum of gage is 90.42 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Jan. 1, 1910, staff gage at site 1,700 ft upstream at datum 2.63 ft higher. Jan. 1, 1910, to Sept. 30, 1929, at datum 2.11 ft higher and Oct. 1, 1929, to Nov. 1, 1956, at datum 1.15 ft higher. Average discharge. --53 years, 7,468 cfs (5,407,000 acre-ft per year). Extremes . Maximum discharge during year, 131,000 cfs Dec. 21 (gage height, 33.0 ft, from floodmarks) ; minimum, 1,020 cfs Sept. 28. 1905-58: Maximum discharge, 218,000 cfs Dec. 22, 1955 (gage height, 46.0 ft, from floodmark, present site and datum); minimum observed, 640 cfs July 18, 1926. Maximum stage known since at least 1861, that of Dec. 22, 1955; flood In 1861 reached a stage about 0.1 ft lower, from Information by local residents. Remarks. Records good except those for periods of no gage-height record, which are fair. Power plants on North Umpqua River ordinarily do not affect discharge at this station. Some diversions for irrigation from streams in South Umpqua River basin, but flow probably only slightly affected. Revisions (water years ).--WSP 1184: 1927(M), 1938(M), 1943(M), 1946(M), WSP 1448: 1911-13, drainage area.

Rating table, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used Oct. 1 to Dec. 19; backwater from moss Sept. 28-3O) 1.8 990 8.0 12,000 3.0 2,180 15.0 38,OOO 4.0 3,210 32.0 125,000 5.0 4,700 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 al,700 al,500 a2,4OO alS.OOO 54,600 22.700 19,100 6.160 5,760 2,800 1,450 1,310 2 al,8OO al,600 *2,560 *13,000 24,600 a!7,000 17,100 6,010 4,200 3,020 1,560 1,520 3 al,9QO al,500 2,380 12,400 19,200 a!4,OOO 21.400 5,700 4,660 5.050 1.480 1,250 4 a2,4OO al,400 2,530 11,100 15,600 12,000 17 , 100 5,590 9,040 2,940 1,290 1,510 5 a3,400 al,5OO 2,410 9,570 15 , 200 311, OOO 13,200 5,460 9,520 2,760 1,400 1,510 6 a5 . 800 al,400 2,540 8,530 11,900 no, soo 1O, 9OO 5,510 6,950 2,520 1,560 1,270 7 a5,400 al,4OO al3,000 8.O3O 11.200 9,440 10,200 5,250 7,140 2,590 1,540 1,270 8 a5,600 1,470 a!5,OOO 8,100 11,500 a9 , 000 9,300 5,010 10,700 2,290 1,410 1,090 9 3,430 1,480 a9,000 7,740 15,600 a8,500 8.6OO 5,010 12.600 2,510 1,500 1,100 10 2,840 1,500 a6,500 7.480 19,5OO a8, 500 7,980 5,290 9,960 2,190 1,290 1,180 11 a2 , 400 1,480 a5,oOO 10, 800 a!9,000 a8,500 *7,910 5,440 7,950 2,120 1,290 1,220 12 a2,200 1,780 a4,400 20,500 a22,OOO a8,000 8,000 5,700 6,640 2,070 1,260 1,220 13 a2,000 3,260 a4 , 000 40,100 a26,000 a8,OOO 7,690 5,440 5,920 2,000 1,320 1,200 14 a2,000 24.800 3,560 26,500 a29,000 a8,OOO 7,690 4,860 5,050 1,820 1,450 1,200 15 3,000 20,200 3,230 19,900 a62,000 a7 , 500 7,550 4,590 4,560 1,940 1,510 1,240 16 3,240 11,100 3,030 2O.6OO allO, 000 a7,OOO 7,160 4,200 4,160 1,810 1,500 1,270 17 2,760 a7,000 3,630 17 , 600 a60,000 6,470 6,950 4,500 5,910 1,860 1,500 1.540 18 a2,400 a8,000 15,900 20,300 a40,000 ae.ooo 9,620 4,680 5,720 1,850 1,260 1,500 19 aZ.OOO all, 000 29,900 16,300 a52,000 36,000 1O.7OO 4,560 5,590 1,850 1,520 1,280 20 al,800 a9,000 74,400 13 , 400 a26,000 ae.ooo 9,520 4,900 3,300 1,830 1,290 1,240 21 al,600 a7,00o 3120,000 13,000 321,000 a6,500 10,800 4,810 3,310 1,620 1,350 1,190 22 al.500 a5,500 a70,000 12,000 17,000 a7,500 14,100 4,700 3,140 1,560 1,510 1,120 23 al,500 a4,600 a36,OOO 1O.9OO 14,900 a8, ooo 15,400 4,330 3,060 . 1,740 1,500 1,110 24 al,500 a3,800 a23 , OOO 14 , 500 18,200 7,380 14,500 4,880 3,210 1,580 1,300 1,180 25 al,600 a3,600 a27,000 a20, 000 74,700 7,620 12 , 000 5,010 3,460 1,650 1.250 1,180 26 al,600 a5,400 a35,oOO 18,100 60,500 8,170 10,400 4,610 *5,210 1,630 1,280 1,180 27 al,600 a3,200 a32,OOO 14,500 59,700 8,700 8,940 4,320 5,110 1,510 1,350 1,160 28 al,600 a3,000 a5o,OQO 19,500 *27,900 8,100 8,000 *4,210 3,070 1.560 1,270 1,050 29 al,600 a2, 800 a40,OOO 68,400 - 7,500 7,160 4,520 2,970 1,460 *1,280 1,140 50 1,580 a2,500 a28,000 96.800 8,580 6.490 3,900 2.840 1,450 1,280 *1,080 51 *1/670 a2 0,000 55,000 ______12,700 5.570 *1,450 1,350 Total 69,420 151,570 685,970 649,650 874,800 284,860 325,260 152,620 158,470 62,390 41,080 56,310 Mean 2,259 5,052 22,130 20,960 51,240 9,189 10,840 4,925 5,282 2,015 1,325 1,210 Cfsm 0.608 1.37 6.01 5.69 8.48 2.49 2.94 1.34 1.43 0.547 0.360 0.329 In. 0.70 1.53 6.93 6.56 8.83 2.88 3.28 1.54 1.60 0.65 0.41 0.37 Ac-ft 157,700 300,600 *1,561 tl,289 tl,735 565,000 645,100 302,700 514,500 125,700 81 , 500 72,020 Calendar year 1957: Max 120,000 Mln 1,100 Mean 7,859 Cfsm 2.15 In. 28.90 Ac-ft 5,676,000 Water year 1957-58: Max 120,000 Mln 1,050 Mean 9,568 Cfsm 2.60 In. 55.26 Ac-ft 6,928,000 Peak discharge (base, 52.OOO cfs). Dec. 21 (about 3 p.m.) 131,000 cfs (55.0 ft); Dec. 28 (about 9 p.m.) about 56,000 cfs; Jan. 50 (4 a.m.) 117,000 cfs (50.72 ft); Feb. 16 (about 1 p.m.) 126,000 cfs (52.25 ft); Feb. 25 (4 p.m.) 89.2OO cfs (25.70 ft). * Discharge measurement made on this day. t Expressed In thousands. a No gage-height record; discharge estimated on basis of recorded range In stage and records for North Umpqua River at Winchester and South Umpqua River near Brockway. 244 UMPQUA RIVER BASIN

3220. Elk Creek near Drain, Oreg.

Location.--Lat 43°38'30", long 123°17'50", in NE£sw£ sec. 21, T. 22 S., R. 5 W., on right bank at downstream side of county bridge, 1,000 ft downstream from Yoncalla Creek and 1.7 miles southeast of Drain. Drainage area. 104 sq mi. Records available. October 1955 to September 1958. ;e. Water-stage recorder. Datum of gage is 305.96 ft above mean sea level, datum of """929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 7,960 cfs Feb. 16 (gage height, 17.79 ft); minimum daily, 0.7 cfs Sept. 5. 1955-58: Maximum discharge, 9,100 cfs Dec. 26, 1955 (gage height, 19.06 ft); mini mum daily, that of Sept. 5, 1958. Remarks. Records excellent except those for periods of backwater from moss or leaves, which are fair. Small diversions by pumping for irrigation above station. Municipal supply for town of Yoncalla is diverted from Wilson Creek above station.

Rating table, water year 1957-58, except periods of backwater from moss or leaves (gage height, In feet, and discharge, In cubic feet per second) 0.7 1.1 7.0 1,380 1.3 1.5 9.0 2,160 2.6 2.0 152 12.0 3,700 5.0 3.0 345 15.0 5,700 11 5.0 790 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 8 8.5 23 421 915 518 252 ~96107 41 33 3.25~~ 1.5 2 10 8 26 389 656 409 244 70 36 1.6 3 17 7.5 28 288 482 327 217 84 190 50 3 1.4 4 20 7.5 27 234 568 265 188 75 187 26 3 1 5 22 7.5 27 200 507 244 171 70 119 24 2.8 jT_ 6 24 *7 50 176 251 217 163 64 91 20 2.8 1 7 27 6.5 253 155 278 199 158 58 95 19 2.4 1.2 8 25 ?75 190 152 303 257 144 54 98 18 2.2 1.1 9 18 6.5 119 144 375 482 131 49 156 19 2.2 1.1 10 16 10 91 208 767 425 125 46 105 20 2 1.1 11 14 23 72 596 579 543 115 46 *84 18 1.9 1.5 12 12 24 60 1,270 721 278 103 49 72 17 1.9 1.5 13 15 88 51 1,130 757 250 96 42 60 16 1.7 1.6 14 26 182 46 696 910 200 89 58 51 14 1.6 lii 15 22 162 44 535 2,850 176 84 56 45 12 1.6 2.2 16 17 92 *54 407 5,120 157 91 55 40 12 1.6 2.1 17 15 61 210 514 1,850 138 177 29 35 12 1.5 1.8 18 13 51 840 476 1,070 128 253 28 29 12 1.5 1.6 19 13 50 1,880 398 742 114 255 27 27 12 1.3 1.7 20 11 46 4,380 398 570 *109 265 26 27 12 1.2 1.6 21 11 40 4,520 434 445 109 565 25 25 *9.5 1.2 1.6 22 10 35 2,220 375 575 100 467 24 23 8.5 1.1 1.6 23 11 34 1,060 434 551 TIT 486 28 23 6 1.1 1.6 24 12 30 788 825 1,050 117 462 58 42 6 1 1.6 25 11 28 756 693 2,380 130 356 56 40 5.5 1 1.6 26 10 25 1,170 537 1,840 142 278 28 29 4.2 1 1.6 27 9.5 25 1,160 432 1,000 136 219 25 29 4.2 1 .9 1.6 28 9 24 3,100 769 682 125 180 54 32 4.2 1.5 29 8.5 24 1,600 *2,190 - 128 150 28 26 4 1.2 1.5 30 8.5 24 805 2,450 175 *123 24 25 5.4 1.4 1.5 31 8 558 1,890 240 24 3 2 1.5 Total 451.5 1,143.5 26,208 19,796 27,892 6,750 6,381 1,571 1,892 440.7 54.8 45.2 Mean 14.6 38.1 845 639 996 218 213 44.2 65.1 14.2 1.77 1.51 Cfsm 0.140 0.366 8.12 6.14 9.58 2.10 2.05 0.425 0.607 0.137 0.017 0.015 In. 0.16 0.41 9.37 7.08 9.97 2.41 2.28 0.49 0.68 0.16 0.02 0.02 Ac-ft 896 2,270 51,980 39,260 55,320 15,590 12,660 2,720 5,750 874 109 90 Calendar year 1957 : Max 4,520 Mln 1.3 Mean 255 Cfsm 2.24 In. 50.42 Ac-ft 168,800 Water year 1957-58 : Max 5,120 Mln 0.7 Mean 253 Cfsm 2.43 In. 33.05 Ac-ft 183,300 eak discharge (base, 3,100 cfs).--Dec. 21 (3 a.m.) 6,390 cfs (15.86 ft); Dec. 28 (10 a.m.) 4,070 cfs (12.62 ft); Jan. 29 (4:30 p.m.) 3,270 cfs (11.28 ft); Feb. 16 (3 a.m.) 7,960 cfs (17.79 ft).______* Discharge measurement made on this day. Note.--Backwater from moss or leaves Oct. 1-5, 12-31, Nov. 1-10, July 20 to Sept. 30. TENMILE CREEK BASIN 245

3232. Tenmlle Creek near Lakeside, Oreg.

Location.--Lat 43°34'40", long 124°11'30", near center of sec. 13, T. 23 S., R. 13 W., hear left bank on downstream side of highway bridge 200 ft upstream from Eel Creek, 0.8 mile upstream from Saunders Creek, and 1 mile west of Lakeside. Records Include flow of Eel and Saunders Creeks. Drainage area. 87 sq ml, approximately, at measuring section l£ miles downstream. Records available.--August 1957 to September 1958. Gage.--Water-stage recorder. Auxiliary staff gage 1.4 miles upstream from base gage, read £wice dally. Datum of both gages Is at mean sea level. Extremes.--1957: Maximum discharge during period August to September, 15 cfs Sept. 27 (gage height, 6.65 ft); minimum, 5.8 cfs Sept. 23-26. 1957-58: Maximum discharge during water year, 2,140 cfs Feb. 18 (gage height, 14.25 ft at base gage, 16.81 ft at auxiliary gage); minimum, 7.9 cfs Sept. 4. Maximum known stage at auxiliary gage, 19.83 ft In January 1953, from floodmarks. Remarks.--Records good. Plow regulated by natural storage In Tenmile Lake and other lakes tributary to Eel and Saunders Creeks.

Rating tables, Aug. 29, 1957, to Sept. 30, 1958 (gage height, in feet, and discharge, In cubic feet per second) Aug. 29 to Dec. 22 Dec. 23 to Sept. 30 4.4 7.5 85 8.0 196 6.4 8.0 151 6.5 9.0 390 9.0 355 6.6 11.0 950 11.0 950 6.8 14.2 2,120 14.1 2,080 Discharge, in cubic feet per second, 1957 ~TDay Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. - 7.2 7 - 6.7 13 _ 6.4 19 6.4 25 _ S.8 2 - 6.9 8 - 6.9 14 - 6.4 20 - *6.2 26 - 8.2 3 - 6.9 9 _ 7.2 15 _ 6.4 21 _ 6.0 27 _ 10 4 - 6.7 10 - 7.4 16 - 6.4 22 - 6.0 28 - 9.3 5 - 6.7 11 - 6.9 17 _ 6.4 23 _ 5.8 29 7.4 8.7 6 - 6.7 12 - 6.7 18 - 6.4 24 - A. 8 30 7.4 8.5 31 7.2 - Total...... _ Mean...... _ Runoff in acre-feet...... - 413 Discharge measurement made on this day.

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 8.7 50 90 1,150 1,160 1.240 470 425 100 47 *19 9.2 2 10 49 89 1,020 1,060 1,090 510 396 99 46 18 9.2 3 13 47 86 890 *929 957 637 374 96 45 18 9.2 4 15 46 86 790 835 838 712 354 94 44 18 8.8 5 17 45 85 709 775 766 694 *332 89 42 18 8.5 6 21 44 86 643 715 700 661 314 86 39 17 8.5 7 23 44 97 585 685 646 628 298 84 38 16 8.5 8 26 *44 114 550 679 634 592 286 83 38 16 *8.8 9 27 « 123 525 703 655 558 270 82 37 15 8.8 10 28 45 126 520 721 661 532 254 78 36 15 9.2 11 30 46 127 558 736 643 502 238 76 35 14 9.6 12 32 *51 126 622 787 602 472 225 73 34 14 9.6 13 44 64 124 787 922 565 448 214 72 32 13 11 14 50 85 124 853 1,030 535 420 202 71 31 13 To 15 5i 98 124 856 1,190 500 404 194 68 29 13 10 16 54 105 136 829 *1, 940 472 404 186 66 28 13 10 17 54 109 *165 *887 *2,110 450 438 176 *61 27 12 10 18 54 111 243 957 2,110 428 505 166 59 26 12 10 19 53 113 525 918 1,950 404 532 162 56 26 12 10 20 52 US 1,430 868 1,720 390 555 156 55 26 12 10 21 51 111 1,980 841 1,510 372 592 149 54 26 12 10 22 50 109 2.060 802 1,330 360 625 142 49 26 12 10 23 48 107 1,900 757 1,160 348 649 139 49 25 12 10 24 48 106 1,780 733 1,150 *338 652 136 49 23 11 9.6 25 53 102 1,700 736 1,610 3BT 628 132 48 22 11 9.6 26 54 100 1,650 727 1,670 364 598 125 48 21 11 9.6 27 54 97 1,560 703 1,560 364 562 119 46 20 10 9.6 28 53 96 1,610 709 1,400 358 528 114 45 20 10 10 29 52 93 1,640 790 - 360 495 110 44 20 10 10 30 52 91 1 500 1,010 384 460 108 44 20 9.6 10 31 51 1,170 428 106 19 Total 1,231.7 2,364 22,816 24,495 34,147 17,206 16,463 6,602 2,024 948 415.8 287.3 Mean 39.7 78.8 736 790 1,220 555 549 213 67.5 30.6 13.4 9.58 Ac-ft 2,440 4,690 45,250 48,590 67,730 34,130 32,650 13,090 4,010 1,880 825 570 Calendar year 1957j Max - Min - Mean - Ac-ft - Water year 1957-58: Max 2,110 Min 8.5 Mean 353 Ac-ft 255,900 * Discharge measurement made on this day. 246 COOS RIVER BASIN

3245. West Fork Millicoma River near Allegany, Oreg.

Location. La t 43°28'35", long 124°03'20", in SW&JW* sec. 19, T. 24 S., R. 11 W. , on left bank at county road bridge, 3^ miles north of Allegany. Drainage area. 46.5 sq mi. Records available .--September 1954 to September 1958. Gage. Water-stage recorder. Datum of gage is 76.95 ft above mean sea level, datum of

Extremes . Maximum discharge during year, 11,300 cfs Dec. 20 (gage height, 14.18 ft), from rating curve extended above 1,100 cfs as explained below; minimum daily, 2.2 cfs Sept. 1 1954-58: Maximum discharge, 13,800 cfs Dec. 30, 1954 (gage height, 15.70 ft), from rating curve extended above 1,100 cfs on basis of slope-area measurement of peak flow; minimum, 2.1 cfs Sept. 19, 20, 1956. The flood in January or November 1953 reached a stage of about 17.9 ft, from information by local resident . Remarks. Records excellent except those for periods of backwater from debris, which are good. Only minor diversions for irrigation above station.

Rating tables, water year 1957-58, except periods of backwater from debris (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 20 Dec. 21 to Sept. 30

2.5 7.8 5.0 725 2.3 1.8 3.5 167 2.6 14 6.0 1,320 2.4 4.6 4.0 325 2.7 22 8.0 2,990 2.5 9.0 5.0 740 3.0 61 10.0 5,200 2.7 22 6.0 1,320 3.4 137 13.0 9,400 2.9 43 8.0 2,990 4.0 305 3.1 72 10.0 5,200 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 C8.8 20 41 332 632 374 535 110 29 19 4^6"4.6 C2.8 2 *c871 18 46 308 423 290 690 99 29 18 C2.6 3 24 18 45 247 314 231 558"952 88 31 16 4.6 C2.4 4 63 17 41 204 244 192 78 30 14 4.6 C2.4 5 79 16 38. 175 225 187 395 *72 27 14 4.3 C2.4 6 119 16 197 151 198 170 304 67 25 12 4.0 02.4 7 88 15 1,280 130 *238 192 260 62 26 ell 4.0 C2.2 8 61 15 516 TT5 403 342 219 58 35 ell 4.0 *C2.4 9 54 14 275 204 491 523 192 55 42 ell 3.7 2.8 10 40 37 190 375 539 451 178 52 33 elO 3.7 3.4 11 31 61 149 690 471 339 156 51 27 clO 3.4 3.4 12 40 92 122 1,000 815 264 138 47 25 elO 3.4 *4.0 13 T6~4208 6"30~775 105 1,070 1,280 213 120 43 24 c9 C3.4 16 14 97 609 925 181 110 42 22 c9 C3.4 21 15 86 *312 90 578 3,760 156 104 40 21 eS.5 03.4 16 16 56 190 *C203 471 4,290 138 189 36 19 c8 C3.4 12 17 41 135 C678 930 1,690 130 566 34 *18 08 03.2 10 18 32 124 cl,220 645 1,190 122 578 32 17 c8 C3.2 8.5 19 26 122 6,160 431 710 106 507 35 16 8.0 03.2 C7.5 20 23 107 9.100 455 C468 9_9 636 33 16 8.0 C3 07.5 21 21 93 3,680 555 C332 120 765 30 15 8.0 C3 C6.5. 22 18 79 1,680 395 C274 122 676 29 IS"14 7.5 03 06 23 19 69 1,080 378 C251 118 564 32 7.5 C3 C5.5 24 27 61 1,250 491 cl.130 130 431 33 C24 7.0 C2.8 C5.5 25 42 55 1,140 483 2,760 333 336 29 C28 6.6 2.8 05 26 49 50 1,420 407 1,050 325 264 26 C20 6.2 2.8 05 27 37 46 970 328 695 *225 216 25 18 5.8 02.62~$ C4.8 28 31 49 2,800 591 499 173 181 24 17 5.8 C4.6 29 27 45 1,070 1,510 - 194 151 24 17 5.4 C2.8 C4.4 30 25 40 632 1.680 475 128 22 16 5.0 c2 .8 C4.4 31 22 439 1,160 740 27 *4 .6 02.8 Total 1,570.6 3,317 36,754 17,161 26,297 7,655 11,109 1,435 696 291.9 106.3 182.9 Mean 50.7 111 1,186 554 939 247 370 46.3 23.2 9.42 3.43 6.10 Cfsm 1.09 2.39 25.5 11.9 20.2 5.31 7.96 0.996 0.499 0.203 0.074 0.131 In. 1.26 2.65 29.40 13.73 21.03 6.12 8.88 1.15 0.56 0.23 0.09 0.15 Ac-ft 3,120 6,580 72,900 34,040 52,160 15,180 22,030 2,850 1,380 579 211 363 Calendar year 1957: Max 9,100 Mln 3.5 Mean 259 Cfsm 5.57 In. 75. 58 Ac-ft 187,500 Water year 1957-58: Max 9,100 Mln 2.2 Mean 292 Cfsm 6.28 In. 85. 25 Ac-ft 211,400 Peak discharge (base. 3,000 cfs).--Dec. 20 (3:30 a.m.) 11,300 cfs (14.18 ft); Dec. 28 (7:30 a.m.) 4,260 ofs (9.21 ft); Feb. 15 (10:30 p.m.) 10,500 cfs (13.66 ft); Feb. 25 (3:30 a.m.) 4,430 ofs (9.36 ft). * Discharge measurement made on this day. c Backwater from debris. COQUILLE RIVER BASIN 247

3246. South Fork Coquille River above Panther Creek, near Illahe, Oreg.

Location. Lat 42°45'40", long 123°59'00", in SE£ sec. 28, T. 32 S., R. 11 W., on left bank 0.5 mile upstream from Panther Creek and 10 miles northeast of Illahe. Drainage area. 29.8 sq mi. Records available. October 1956 to September 1958. Gage. Water-stage recorder. Datum of gage is 2,117.30 ft above mean sea level (levels oy Pacific Power & Light Co.). Extremes. Maximum discharge during year, 3,570 cfs Dec. 20 (gage height, 11.87 ft), from rating curve extended above 2,300 cfs as explained below; minimum daily, 1.7 cfs Sept. 7. 1956-58: Maximum discharge, 4,190 cfs Dec. 11, 1956 (gage height, 12.75 ft), from rating curve extended above 2,300 cfs on basis of slope-area measurement of peak flow; minimum daily, 1.4 cfs Oct. 8, 9, 1956. Flood of Dec. 21, 1955, reached a stage of about 15.7 ft (discharge, about 6,300 cfs). Remarks. Records excellent except those for periods of backwater from moss, which are good. No regulation or diversion above station. Rating table, water year 1957-58, except periods of backwater from moss (gage height. In feet, and discharge, In cubic feet per second) 1.4 1.0 2.5 28 6.0 480 1.5 1.8 3.0 50 7.0 800 1.6 2.9 3.5 83 9.0 1,800 1.8 6.8 4.0 127 11.0 3,000 2.1 14 5.0 267 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 *9£ 37 44 233 485 282 432 85 20 19 3.6 2.2 Z 11 33 43 316 352 231 475"556 77 20 21 3TF 2.1 3 22 30 39 270 269 192 70 32zS IS 3.5 el. 8 4 51 27 37 223 216 161 358 64 14 3.5 cl.8 5 93 25 36 185 *'2TT 151 302 59 24 13 C3.4 cl.8 6 104 24 37 154 253 131 274 55 24 12 3.3 cl.8 7 111 22 51 130 455 121 248 *51 26 11 3.3 °i4 8 75 21 55 122 688 115 242 48 27 11 C3.2 T3 9 54 20 50 111 840 110 255 45 25 10 C3.2 2.7 10 42 W 46 25? 793 112 289 42 24 10 3.3 *3.0 11 36 76 43 511 538 111 328 43 22 9.5 3.0 2.8 12 35 87 40 752 924 107 338 41 22 9.0 2.9 2.9 13 I2"9~143 *448 38 642 964 104 318 37 21 C8.5 C2.8 9.1 14 370"595 36 430 684 99 262 35 19 8.3 C2.8 3-4 15 93 36 390 1,600 94 210 33 18 8.3 2.8 375 16 78 247 137 328 1.910 90 179 31 17 C8.5 2.7 4.7 17 65 199 471 277 1,150 88 252 30 16 C8.5 2.7 4.0 18 53 195 *625 223 1,300 86 269 28 *16 8.1 C2.6 3.8 19 44 172 832 187 856 85 210 28 15 C7.5 2.5 3.5 20 38 151 2.420 194 502 3? 180 27 15 7.0 C2.4 3.3 21 33 125 *2,090 196 348 338 167 25 14 6.6 C2.2 3.2 22 29 107 818 174 270 352"398 205 24 13 C6.5 2.2 3.2 23 39 93 541 278 217 205 28 12 c6 2.1 3.0 24 46 80 574 653 1,290 262 192 30 12 C5.5 c2 2.9 25 78 71 601 526 1,750 302 174 26 12 C5 c2 2.9 26 79 63 744 366 790 *311 154 24 12 5.1 2.0 2.7 27 68 57 544 293 495 270 134 22 14 4.9 1.9 2.7 28 59 57 678 726 358 227 117 23 13 04. 4 el .8 2.4 29 52 50 541 2,210 223 104 21 12 4.5 c2 2.3 30 46 45 376 1,180 240 94 19 n. *4.0 2.2 2 3 31 41 281 740 328 25 3 .8 2 * 3 Total 1,856.8 3,577 12,904 13,309 20,558 5,770 7,523 1,191 556 276.5 83.8 98.1 Mean 59.9 119 416 429 734 186 251 38.4 18.5 8.92 2.70 3.27 Cfsm 2.01 3.99 14.0 14.4 24.6 6.24 8.42 1.29 0.621 0.299 0.091 0.110 In. 2.32 4.46 16.10 16.61 25.66 7.20 9.39 1.49 0.69 0.35 0.10 0.12 Ac-ft 3,680 7,090 25,590 26,400 40,780 11,440 14,920 2,360 1,100 548 166 195 Calendar year 1957: Max 2,420 Min 1.5 Mean 139 Cfsm 4.66 In. 63.17 Ac-ft 100,400 Water year 1957-58: Max 2,420 Min 1.7 Mean 185 Cfsm 6.21 In. 84.49 Ac-ft 134,300 Peak discharge (base, 1,200 cfs). Dec. 20 (10 p.m.) 3,570 cfs (11.87 ft); Jan. 29 (11 a.m.) 2,970 cfs (10.95 ft); Feb. 15 (lO:30 p.m.) 3,300 cfs (11.46 ft); Feb. 25 (12 a.m.) 2,660 cfs (10.44 ft). * Discharge measurement made on this day. c Backwater from moss. 248 COQUILLE RIVER BASIN

3247. South Pork Coquille River near Illahe, Oreg.

Location.-Lat 42°43'50", long 124°00<40", in NWij- sec. 16, T. 33 S., R. 11 W., on left BanTTli miles downstream from Lockhart Creek and 7 miles northeast of Illahe. Records of discharge presented herein are for measuring section site 1.2 miles upstream. Drainage area. 40.6 sq mi at measuring section 1.2 miles upstream from gage. Records available.--October 1956 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,871.04 ft above mean sea level (levels by Pacific Power & Light Co.). Extremes. Maximum discharge during year, 5,670 cfs Dec. 20 (gage height, 9.65 ft), from rating curve extended above 2,800 cfs on basis of slope-area measurement at gage height 9.54 ft; minimum, 2.2 cfs Sept. 6, 7. 1956-58- Maximum discharge, that of Dec. 20, 1957; maximum gage height, 9.70 ft Dec. 11, 1956 (momentary backwater from debris); minimum discharge, that of Sept. 6, 7, Flood of Dec. 21, 1955, reached a stage of about 10.8 ft (discharge, about 8,600 cfs). Remarks.--Records excellent. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Dec. 20 Dec. 21 to Sept. Z.O 13 5.0 540 1.6 2.0 2.3 24 6.0 1,010 1.9 is' 2.6 42 7.0 1,830 £.1 3.0 82 8.0 £,870 2.Z 3.5 150 9.0 4,360 2.4 4.0 £50 £.6 Note. Same as preceding table above £.6 ft. Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 *1313" 36 52 285 660 368 596 114 22 20 ill 5.1 2 32 50 410 452 295 6l8~759 105 21 24 5.9 2.9 3 24 30 46 333 355 248 92 35 19 5.9 2.4 4 54 28 42 275 262 211 484 82 53 17 5.6 2.4 5 111 26 41 221 *3oo 197 401 75 24 15 5.4 2.4 6 136 24 44 187 350 175 350 69 24 14 5.4 2.4 7 134 24 58 160 644 160 312 *64 25 15 5.4 2.2 8 92 23 60 150 959 156 502 58 29 12 5.2 3.1 9 63 22 56 3~5?136 1,150 148 518 56 26 12 5.2 3.5 10 51 51 52 1,040 148 568 51 24 12 5.2 *4.5 11 42 74 48 705 764 148 422 51 25 12 5.2 4.5 12 54 109 45 1,070 1,510 142 449 48 23 11 4.7 4.2 13 238 *675 42 885 1,270 140 434 45 21 10 4.5 9.7 14 177 786 39 600 954 152 345 41 21 9.9 4.5 ~8.111 15 120 4T7 3? 628 2,420 128 278 58 19 9.9 4.5 16 89 308 158 464 2.710 125 232 55 18 10 4.2 6.6 17 68 240 628 368 *1,5?0 116 417 55 18 9.9 4.2 6.1 18 56 240 *830 285 1,670 116 401 33 *17 9.9 4.0 5.6 19 46 211 1,260 230 1,080 114 288 55 16 9.4 4.0 5.6 20 39 185 5,760 235 674 129 240 50 16 8.6 3.8 5.4 21 34 154 *2,950 245 455 465 215 28 15 8.1 5.5 5.2 22 30 132 1,090 213 542 544 260 27 14 7.8 3.3 5.2 23 37 115 746 361 285 592 262 31 14 7.6 3.1 4.9 24 44 99 855 917 1,850 358 250 35 14 7.5 5.1 4.9 25 78 87 865 732 2,510 410 225 50 13 7.3 2.9 4.7 26 82 76 1,020 480 1,020 *419 201 26 13 7.3 2.9 4.7 27 68 69 759 371 678 348 177 24 15 7.1 2.7 4.5 28 58 66 934 970 484 290 158 24 14 6.6 2.4 4.2 29 51 59 732 5.550 278 140 25 13 *6.4 Z7T 4.2 30 45 54 491 1,540 505 124 21 12 6.4 2.9 4.0 31 39 345 992 434 JZ 3.1 Total 2,186 4,512 18,137 18,165 27,918 7,617 10,054 1,440 587 556.6 131.5 142.2 Mean 70.5 150 585 586 997 246 555 46.5 19.6 10.9 4.24 4.74 Cfsm 1.74 3.69 14.4 14.4 24.6 6.06 8.25 1.15 0.485 0.268 0.104 0.117 In. 2.00 4.13 16.61 16.64 25.57 6.98 9.21 1.32 0.54 0.31 0.12 0.13 Ac-ft 4,340 8,950 35,970 36,030 55,570 15,110 19,940 2,860 1,160 668 261 282 Calendar year 1957: Max 3,760 Min 3.0 Mean 183 Cfsm 4.51 In. 61.34 Ac-ft 132,800 Water year 1957-58: Max 3,760 Min 2.2 Mean 250 Cfsm 6.16 In. 83.56 Ac-ft 180,900 Peak discharge (base. 1,700 cfs).--Dec. 20 (10:30 p.m.) 5,670 cfs (9.65 ft); Jan. 29 (10 a.m.) 4,740 cfs (9.21 ft); Feb. 15 (10 p.m.) 5,160 cfs (9.42 ft); Feb. 25 (12:30 a.m.) 3,730 cfs (8.62 ft). * Discharge measurement made on this day. COQUILLE RIVER BASIN 249 3248. Rock Creek; near Illahe, Oreg. Location. Lat 42°42'50", long 124°02'55", in NW£ sec. 19, T. 33 S., R. 11 W., on right bank three-quarters of a mile upstream from mouth and 6 miles north of Illahe. Drainage area. 13.0 sq mi. Records available. October 1956 to October 1958 (discontinued). Gage.--Water-stage recorder. Datum of gage is 1,078.40 ft above mean sea level (levels by Pacific Power & Light Co.). Extremes.--Maximum discharge during year, 2,380 cfs Jan. 29 (gage height, 6.73 ft), from rating curve extended above 950 cfs; minimum, 2.2 cfs Sept. 7. 1958: Maximum discharge during October, 83 cfs Oct. 19 (gage height, 2.94 ft); min imum, 1.8 cfs Oct. 16. 1956-58: Maximum discharge, that of Jan. 29, 1958; minimum, that of Oct. 16, 1958. Remarks. Records excellent except those for periods of backwater from beaver dam, which are good. No regulation or diversion above station.

Rating tables, Oct. 1, 1957, to Oct. 31, 1958, except period of backwater from beaver dam (gage height, In feet, and discharge, In cubic feet per second) Oct. 1, 1957, to Jan. 28, 1958 Jan. 29 to Oct. 31, 1958 1.9 4.3 3.5 250 1.8 1.8 2.4 38 2.1 11 4.0 420 1.9 4.5 2.8 94 2.3 22 4.5 640 2.0 8,5 3.1 150 2.6 52 5.0 940 2.2 20 3.5 250 3.0 120 6.4 2,060 Note. Same as preceding table above 3.5 ft. Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 *s is 20 23 99 220 142 280 53 15 10 3.8 3.0 2 5.5 18 22 180 152 123 352 45 14 12 375 2.7 3 9.8 17 21 120 119 105 274 42 17 8.5 3.2 2.7 4 23 16 20 89 96 92 210 38 16 7.2 3.2 2.7 5 44 15 ii 72 *138 88 164 37 15 6.8 3.2 2.7 6 88 14 39 59 150 78 134 *34 13 6.4 3.2 2.5 7 55 13 108 51 274 77 112 33 14 6.4 3.2 2.2 8 36 13 66 51 331 77 107 31 13 6.4 3.2 2.7 9 27 12 46 58 419 80 116 30 12 6.0 3.2 3.0 10 20 72 38 416 344 78 132 28 12 5.6 3.2 *3.9 11 18 116 33 387 362 74 138 27 12 5.6 3.2 4.2 12 69 308 30 527 756 70 156 26 11 5.6 3.2 4.2 13 To~o"284 *7383"68 26 325 426 64 146 25 10 5.2 3.2 23 14 25 236 484 59 121 24 10 4.8 3.2 T0 15 56 218 24 434 1.350 56 101 22 10 5.2 3.2 6.8 16 38 132 132 232 939 53 98 22 9.5 6.4 3.2 5.6 17 30 112 369 178 670 5? 356 21 9.0 5.6 3.2 5.2 18 25 200 *400 120 565 57 225 19 *8.5 5.2 3.2 4.5 19 21 145 1,180 93 352 56 175 19 8.5 4.8 3.0 4.2 20 19 100 1,980 118 220 74 162 18 8.5 4.5 3.0 3.8 21 17 77 *924 120 156 279 140 18 8.0 4.5 3.0 3.8 22 16 62 369 93 136 212 136 17 8.0 4.2 3.0 3.8 23 25 52 298 160 144 154 123 19 7.6 4.2 2.7 3.5 24 31 45 454 504 783 194 103 18 7.6 3.5 577 3.5 25 73 39 417 256 717 268 88 16 7.6 375 2.7 3.5 26 56 36 438 152 364 *192 77 15 6.8 3.8 2.7 3.5 27 41 32 410 134 247 138 70 14 7.2 3.8 2.7 3.2 28 32 29 678 573 175 108 63 13 6.8 3.8 2.7 3.2 29 28 26 298 1,350 - 123 58 IS 6.4 3.8 3.0 3.2 30 24 25 175 600 195 56 13 674 *3.8 3.0 3.0 31 21 116 384 32JL 15 3.8 3.0 Total 1,337.8 3,070 9,178 8,171 11,089 3,741 4,478 765 310.4 170.9 95.7 133.8 Mean 43.2 102 296 264 396 121 149 24.7 10.3 5.51 3.09 4.46 Cfsm 3.32 7.85 22.8 20.3 30.5 9.31 11.5 1.90 0.792 0.424 0.238 0.343 In. 3.83 8.78 26.26 23.38 33 .72 10.70 12.81 2.19 0.89 0.49 0.27 0.38 Ac-ft 2,650 6,090 18,200 16,210 21,990 7,420 8,880 1,520 616 339 190 265 Calendar year 1957: Max 1,980 Mln 2.8 Mean 95.0 Cfsm 7.31 In. 99.20 Ac-ft 68,760 WaterHauei- yearyeai- 1957-58:o.»o/-oo: MaxrwtA 1,980±,aou Mlnwj-ii 2.2£.£ Meanrieait 117ij./ Cfsmixisiu 9.00a.uu In.j.Ji. 121.70l£:j_./u Ac-ftHU-AI- 84,370O4,o/u Peak discharge (base, 1,000 cfs). Nov. 13 (4 a.m.) 1,190 cfs (5.36 ft); Dec. 20 (6:30 p.m.) 2,300 cfs (6.65. ft); Jan.. 29 (7:30 a.m.).. 2,380, cfa (6.73 ft); Feb. 15 (8 p.m.) 2,310 cfs (6.66 ft); Feb. 24 (10(1O p.m.)D.m.} 1,2101.21O cfs ffi.38(5.38 ft).ffcl. * Discharge measurement made on this day. Note. --Backwater from beaver dam Sept. 2-30. Discharge, in cubic feet per second, Day Discharge Day Discharge Day Discharge Day Discharge

2..... 2.7 10.. 2.5 18.. 10 26.. 3.2 3..... 2.7 11.. 2.5 19.. 60 27.. 3.0 4. .... 2.5 12.. 2.2 20.. *16 28.. 2.8 5..... 2.5 13.. 2.2 21.. 9.0 29.. 2.6 6..... 2.2 14.. 2.0 22.. 6.8 30.. 2.4 7..... 2.2 15.. 2.0 23.. 8.0 31.. 8 8..... 2.2 16.. 1.8 24.. 5.6 181.3 5.85 0.450 0.52 Runoff in acre-feet ...... 360 Discharge measurement made on this day. Note. Backwater from beaver dam Oct. 1-27.

534540 O -60 -17 250 COQUILLE RIVER BASIN

3249. South Fork Coquille River near Powers, Oreg.

Location. Lat 42°47'05", long 124°02i25", in SW^SWtf sec. 18, T. 32 S., R. 11 W., on right bank three-quarters of a mile upstream from Hall Creek and 7 miles southeast of Powers. Drainage area. 93.2 sq mi. Records available. October 1956 to September 1958. Gage.--Water-stage recorder. Datum of gage is 585.32 ft above mean sea level (levels by Pacific Power & Light Co.). Extremes.--Maximum discharge during year, 13,500 cfs Feb. 15 (gage height, 15.20 ft); mini mum, 12 cfs Sept. 7, 8. 1956-58: Maximum discharge, that of Feb. IS, 1958; minimum, 12 cfs Oct. 8, 9, 1956, Sept. 7, 8, 1958. Remarks.--Records excellent except those for period of shifting control, which are good. No regulation or diversion above station.

Rating tables, water year 1957-58, except period of shifting control (gage height, In feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 20 Dec. 21 to Sept. 30 28 6.0 1,430 2.6 5.0 560 80 8.0 3,040 2.9 6.0 1,190 3.5 172 11.0 6,500 3.2 8.0 2,900 4.0 325 14.0 11,200 78 10.0 5,100 620 165 13.0 9,500 325 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 37 Ill 145 875 1,640 952 1,700 2~54~278 77 59 21 14 2 *37 104 145 1,180 1,130 762 2.120 74 19 21 14 3 71 96 138 966 854 645 1,780 235 Uz~92 64 20 13 4 143 90 131 798 684 560 1,340 214 54 20 13 5 275 84 127 678 *810 520 1,080 199 81 51 20 13 6 408 82 150 585 *882 460 903 *188 77 47 19 13 7 325 80 281 510 1,700 435 768 178 77 44 19 12 8 236 78 236 500 2,290 440 708 165 86 43 19 13 9 180 75 200 465 2,850 445 708 157 85 42 18 15 10 140 232 175 1,800 2,610 440 756 147 82 39 18 17 11 124 332 161 2,190 2,070 420 816 147 77 38 18 *19 12 165 648 148 3,130 3,960 392 861 139 74 36 18 17 13 962 2.550 140 2,350 3,180 365 834 126 73 35 17 54 14 Wz *1,920 134 1,560 2,560 341 702 122 68 34 17 47 15 311 1,180 131 2,000 6,980 321 585 117 65 34 17 31 16 233 758 511 1,320 6,570 297 530 112 60 38 17 24 17 189 585 1,800 1,040 4,180 289 1,210 108 58 36 17 21 18 156 680 2,310 804 3,890 289 1,020 105 *56 34 16 20 19 134 566 *4,370 660 2,650 282 750 105 55 32 16 19 20 120 460 *9,720 696 1,610 351 672 97 54 31 16 18 21 109 372 6,570 738 1,130 1,170 595 94 53 29 15 18 22 100 314 2,830 625 896 1,200 678 92 52 29 15 18 23 138 272 2,180 1,230 792 889 678 102 49 28 14 18 24 150 248 2,590 2,630 4,720 910 610 102 49 28 14 17 25 272 227 2,390 1,770 5,370 1,360 545 94 48 26 14 17 26 248 203 2,730 1,130 2,670 1,130 480 85 46 25 14 16 27 206 189 2,120 882 1,760 *875 425 81 52 25 14 16 28 172 183 3,010 2,710 1,250 708 378 79 51 24 14 15 29 148 169 1,990 8,580 - 756 337 77 47 23 14 15 30 131 153 1,340 4,080 1,110 305 -74 46 *22 14 14 31 120 1,030 2,670 1,820 to 22 14 Total 6,542 13 , 02 1 49,933 51,152 71,688 20,904 24,874 4,151 1,956 1,151 520 571 Mean 211 434 1,611 1,650 2,560 674 829 134 65.2 37.1 16.8 19.0 Cfsm 2.26 4.66 17.3 17.7 27.5 7.23 8.89 1.44 0.700 0.398 0.180 0.204 In. 2.61 5.20 19.93 20.41 28.61 8.34 9.93 1.66 0.78 0.46 0.21 0.23 Ac-ft 12,980 25,830 99,040 101,500 142,200 41,460 49,340 8,230 3,880 2,280 1,030 1,130 Calendar year 1957: Max 9,720 Min 14 Mean 512 Cfsm 5.49 In. 74.63 Ac-ft 370,900 Water year 1957-58: Max 9,720 Min 12 Mean 675 Cfsm 7.24 In. 98.37 Ac-ft 488,900 Peak discharge (base, 4,000 cfs). --Dec. 20 (8 p.m.) 12,800 cfs (14.82 ft); Jan. 29 (8:30 a.m.) 13,100 cfs (14.99 ft); Feb. 12 (6:30 a.m.) 4,520 cfs (9.52 ft); Feb. 15 (9 p.m.) 13,500 cfs (15.20 ft); Feb. 24 (10:30 p.m.) 8,780 cfs (12.55 ft). * Discharge measurement made on this day. Note. Shifting-control method used Dec. 22 to Jan. 27. COQUILLE RIVER BASIN 251

3250. South Fork Coquille River at Powers, Oreg.

Location.--Lat 42°53'30", long 124°04'10", in SE£ sec. 12, T. 31 S., R. 12 W., on left bank half a mile northeast of bridge at Powers and three-quarters of a mile upstream from Woodward Creek. Drainage area. 169 sq mi. Records available . September 1916 to September 1926, October 1928 to September 1958. Gage.--Water-stage recorder. Datum of gage is 197.42 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Nov. 17, 1938, staff or wire-weight gages at various sites within 1 mile of present site at different datums. Average discharge.--39 years (1916-26, 1929-58), 773 cfs (559,600 acre-ft per year). Extremes. Maximum discharge during year, 19,700 cfs Feb. 15 (gage height, 15.92 ft); minimum, 19 cfs Sept. 7, 8. 1916-26, 1928-58: Maximum discharge, 30,500 cfs Dec. 28, 1945 (gage height, 20.57 ft), from rating curve extended above 14,000 cfs on basis of contracted-opening measurement at gage height 18.14 ft; minimum, 12 cfs Sept. 22-25, 27-30, 1939. Remarks. Records excellent except those for January and period of backwater from moss, which are good. Small diversions for irrigation above station. No regulation. Revisions (water years). WSP 1184: 1946(M). WSP 1448: 1917-18(M), 1919, 1920(M), 1925.

Rating tables, water year 1957-58, except period of backwater from moss (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Jan. 29 30 to sept. 30 1.5 51 5.0 1,760 3.0 535 1.9 114 7.O 3,800 4.0 1,100 2.5 260 10.0 8,3OO 56 5.0 1,850 3.0 455 14.0 15,800 105 7.0 3,900 4.0 1,030 185 9.0 6,700 320 13.0 13,8OO Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 55 155 220 1,230 2,600 1,420 2,810 432 118 99 35 26 1 56 2 142 218 1,740 1,810 1,150 5,450 396 118 -95152 55 24 3 105 132 2OO 1,450 1,360 962 5,110 560 175 34 25 4 238 124 192 1,160 1,060 812 2,160 536 155 82 32 22 5 525 116 192 926 1,230 752 1,700 310 132 72 32 22 6 746 1O9 208 776 »1 , 400 668 1,580 *292 122 66 32 22 7 627 103 383 666 2,970 641 1,170 274 125 62 52 20 8 388 101 345 660 4,060 712 1,050 257 167 60 32 26 9 281 96 290 605 4,500 776 1,050 243 150 59 32 *25 10 212 329 254 2,570 4,190 740 1,090 229 155 56 32 26 11 190 610 233 3,730 3,040 685 1,140 236 135 55 30 30 12 172 798 218 4,990 5,840 625 1,160 226 130 53 30 28 13 1,510 3.540 205 3,980 5,070 580 1,130 206 122 51 29 56 14 887 *3,060 195 2,340 3,910 535 974 194 112 48 29 60 15 540 1,930 192 2,600 10,000 499 812 182 105 49 29 41 16 370 1,280 833 1,870 10,800 468 724 170 99 52 29 32 17 284 972 *2,990 1,460 6,080 440 1,450 158 *95 54 29 51 18 230 1,060 3,910 1,140 5,900 440 1,400 155 85 52 29 28 19 195 920 6,220 894 4,050 427. 1,030 152 82 50 29 27 20 172 737 14,100 920 2,490 454 920 145 80 48 29 26 21 153 605 *1 1,400 1,080 1,750 1,500 818 140 77 46 28 26 22 136 505 4,500 880 1,520 1,750 980 132 71 45 28 26 23 168 432 3,180 1,420 1,150 1,290 1,050 152 66 45 28 26 24 208 383 3,600 3,820 7,220 1,380 950 161 66 44 28 25 25 390 341 3,330 2,620 15,800 2,350 860 142 65 43 27 25 26 396 311 4,220 1,700 4,100 1,910 734 150 64 42 26 24 27 300 284 3,110 1,290 2,680 *1,410 646 125 80 41 25 25 28 251 272 4,550 3,570 1,880 1,110 571 122 75 *39 26 23 29 212 251 3,150 15.000 - 1,300 517 115 66 38 26 22 30 192 225 2,160 6,510 2,080 412 110 65 38 26 21 31 175 1,540 4,150 3,570. TT5 37 26 Total 10,164 19,923 76,338 75,747 116,220 33,436 57,308 6,597 3,155 1,753 914 836 Mean 328 664 2,463 2,443 4,151 1,079 1,244 206 105 56.5 29.5 27.9 Cfsra 1.94 3.93 14.6 14.5 24.6 6.38 7.56 1.22 0.621 0.534 0.175 0.165 In. 2.24 4.38 16.80 16.67 25.58 7.56 8.21 1.41 0.69 0.39 0.20 0.18 Ac-ft 20,160 39,520 151,400 150,200 230,500 66,520 74,000 12,690 6,260 3,480 1,810 1,660 Calendar year 1957: Max 14,loo Mln 23 Mean 813 Cfsm 4.8! In. 65.31 Ac-ft 588,600 Water year 1957-53: Max 14,100 Mln 20 Mean 1,047 Cfsm 6.20 In. 84.11 Ac-ft 758,000 Peak discharge (base, 8,OOO cfs).--Dec. 20 (9 p.m.) 19,10O cfs (15.64 ft); Jan. 29 (11 a.m.) 18,700 cfs (15.45 ft); Feb. 15 (1O p.m.) 19,7OO cfs (15.92 ft); Feb. 24 (12 p.m.) 14,500 cfs (15.33 ft) .______* Discharge measurement made on this day. Note. Backwater from moss Aug. 1 to Sept. 30. 252 ROGUE RIVER BASIN

3280. Rogue River above Prospect, Oreg.

Location Lat 42°47' , long 122°30' , in NEi sec. 19, T. 32 S., R. 3 E., on left bank li miles upstream from intake of diversion of The California Oregon Power Co., 2 miles northwest of Prospect, and 3 miles upstream from Mill Creek. Drainage area. 332 sq mi. Records available. January 1908 to February 1912, October 1923 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Prior to October 1925, published as "near Prospect." Gage. Water-stage recorder. Altitude of gage is 2,620 ft (from river-profile map). Trior to Feb. 17, 1912, staff gage at several sites within a few hundred feet upstream at various datums. Average discharge. 38 years (1908-11, 1923-58), 803 cfs (581,300 acre-ft per year). Extremes.--Maximum discharge during year, 5,020 cfs Feb. 16 (gage height, 5.42 ft); minimum, 455 cfs Nov. 4. 1908-12, 1923-58: Maximum discharge, 16,600 cfs Dec. 22, 1955 (gage height, 10.01 ft), from rating curve extended above 6,400 cfs on basis of slope-area measure ment of peak flow; minimum observed, 200 cfs Nov. 20, 1931 (gage height, 1.07 ft). Remarks. Records good. No regulation or diversion above station. Coo£erati.on.--Water-stage-recorder graph furnished by The California Oregon Power Co. Revisions (water years). WSP 709: Drainage area. WSP 1248: 1925, 1927(M).

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.6 430 3.0 1,460 2.0 660 4.0 2,700 2.5 1,000 6.0 6,080 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 510 470 606 1,020 1,410 1.470 871 1.440 1,600 850 606 540 2 504 465 600 1,020 1,240 1,356 878 1,560 *1,540 S5z"857 618 534 3 588 465 582 952 1,170 1,220 857 1,650 2.020 50"6~636 534 4 594 150"460 570 899 1,110 1,120 829 1,690 1,880 801 534 5 606 564 864 1,100 1,060 801 1,820 1,680 780 594 534 6 594 460 612 836 1,100 1,000 801 1,860 1,800 768 *594 534 7 *600 460 1,180' *822 1,230 952 750"780 1,800 1,770 762 588 534 8 570 465 1,080 822 1,380 920 1,940 1,770 744 588 546 9 606 460 899 8~5T808 1,350 878 787 2,180 1,620 732 582 558 10 588 516 815 1,480 843 871 2,310 1,470 720 582 540 11 564 558 768 928 1,380 815 984 2.460 1,390 708 582 534 12 558 672 744 1,150 1,890 794 1,060 2,036 1,340 702 576 546 13 815 2,070 708 1,080 1,960 780 1,190 1,720 1,240 696 576 SS8"696 14 73? 1,466 690 976 1,710 756 1,220 1,620 1,210 690 570 15 618 968 684 1,170 2,780 744 *1,210 1,710 1,180 696 564 564 16 570 808 732 1,280 4,760 726 1,290 1,870 1,160 714 564 546 17 540 738 801 1,380 3,776 726 1,710 2,100 1,140 702 564 546 18 522 1,030 808 1,410 *3,260 714 2,060 2,230 1,110 794 570 534 19 510 1,210 857 1,220 2,900 750"708 1,750 2,310 1,090 690 564 534 20 504 936 2,140 1,110 2,640 1,750 2,220 1,070 672 558 534 21 498 *836 2.870 1,010 2,280 843 2,110 2,190 1,030 660 558 534 22 492 768 1,590 928 2,080 850 2,110 2,110 1,030 660 558 540 23 498 732 1,220 936 2,080 850 1,710 2,100 1,190 648 558 *540 24 504 726 1,110 984 2,780 920 1,480 2,250 1,080 642 552 528 25 516 720 1,150 968 3,590 920 1,340 2,020 992 636 552 522 26 552 708 1,500 936 2,480 892 1,240 1,960 944 630 546 516 27 504 672 1,290 928 2,000 871 1,190 1,870 928 624 540 516 28 498 660 1,460 1,520 1,680 871 1,190 1,740 892 618 345 516 29 492 630 1,520 2,720 871 1,210 1,590 871 618 540 BIO-510 30 450"480 618 1,240 2,416 871 1,290 1,500 850 612 540 31 1,110 1,680 871 1,650 612 540 Total 17,207 22,221 32,500 35,624 58,590 27,906 37,349 59,500 38,887 21,860 17,712 16, 242 Mean 555 741 1,048 1,149 2,092 900 1,245 1,919 1,296 705 571 541 Cfsm 1.67 2.23 3.16 3.46 6.30 2.71 3.75 5.78 3.90 2.12 1.72 1.63 In. 1.93 2.49 3.64 3.99 6.56 3.13 4.18 6.66 4.36 2.45 1.98 1.82 Ac-ft 34,130 44,070 64,460 70,660 116,200 55,350 74,080 118,000 77,130 43,360 35,130 32,220 Calendar year 1957: Max 5,390 Min 455 Mean 903 Cfsm 2.72 In. 36.93 Ac-ft 654,000 Water year 1957-58: Max 4,760 Min 460 Mean 1,056 Cfsm 3.18 In. 43.19 Ac-ft 764,800

eak dischargischarge (base, 2,700 cfs). Nov. 13 (12 m.) 2,740 cfs (4.03 ft); Dec. 21 (1 a.m.) 4,010 ofs 4.833 ft); Jan. 29 (4 p.m.) 3,770 cfs (4.68 ft); Feb. 16 (7 a.m.) 5,020 cfs (5.42 ft); Feb. 25 .m.) 4,150 cfs (4.91 ft). ______Discharge measurement made on this day. ROGUE RIVER BASIN 253

3320. South Pork Rogue River near Prospect, Oreg.

Location. Lat 42°42', long 122°23', in NE£ sec. 18, T. 33 S., R. 4 E., on right bank 500 ft downstream from diversion dam and intake of South Pork power canal, an eighth of a mile downstream from Imnaha Creek, and 6 miles southeast of Prospect. Drainage area.--79 sq mi, approximately. Records available . April 1924 to September 1931, October 1949 to September 1958. Equiv- alent records for period October 1931 to September 1949 may be obtained from combined flow of South Pork Rogue River above Imnaha Creek near Prospect and Imnaha Creek near Prospect. Gage. Water-stage recorder. Altitude of gage is 3,330 ft (from topographic map). Apr. 1, 1924, to Sept. 30, 1931, at site an eighth of a mile downstream at different datum. Average discharge. 16 years, 184 cfs (133,200 acre-ft per year). Extremes.--Maximum discharge during year, 940 cfs Feb. 16; minimum daily, 80 cfs Nov. 2, 1924-31, 1949-58: Maximum discharge, 3,180 cfs Dec. 22, 1955 (no flow in canal), from rating curve extended above 410 cfs on basis of computation of peak flow over dam; minimum daily, about 35 cfs in September 1931, during period of no gage-height record. Remarks. Records fair. All records presented herein include flow in South Pork power canal (completed in March 1932) which diverts 500 ft above station and returns water to Rogue River above South Pork Rogue River; practically no storage above diversion dam. Cooperation. Electrical-output record for power canal furnished by The California Oregon Powe«er Co. Revisions (water years). WSP 1318: 1925(M), 1927(M), 1930(M).

Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 87 82 99 249 432 346 169 245 286 221 *137 109 2 89 80 99 231 386 32T 171 f64 *313 H5 135 108 3 104 ST 97 216 350 302 168 280 432 206 141 109 4 100 80 96 203 318 289 165 293 365 199 134 107 5 100 80 W 191 303 284 164 321 303 193 134 106 6 97 80 104 181 298"289 275 164 332 341 189 130 107 7 *103 80 187 *178 266 163 328 334 186 132 106 8 97 80 182 175 295 258 161 350 323 185 130 107 9 100 80 150 172 295 247 161 382 303 182 127 111 10 100 85 137 m 295 240 265 405 270 176 126 107 11 93 87 127 172 302 234 176 427 249 174 121 107 12 92 99 121 194 436 226 180 557 248 170 123 107 13 116 500 116 194 425 221 189 310 248 169 121 126 14 Toa 334 113 188 477 213 196 296 241 167 121 113 15 96 197 113 227 761 207 *203 314 238 165 119 112 16 92 153 126 238 859 199 212 350 236 182 118 111 17 89 137 137 251 705 196 280 386 240 188 117 108 18 88 163 134 259 649 192 307 405 237 182 121 105 19 87 208 144 242 605 188 264 412 233 174 117 105 20 84 156 225 232 576 187 273 401 229 169 118 102 21 86 *149 312 220 520 192 325 390 220 161 118 102 22 84 144 244 208 498 185 346 382 214 160 114 *100 23 86 131 215 313 498 183 2B3 371 254 159 114 104 24 85 123 199 228 531 183 251 375 350 153 113 100 25 85 119 247 326 *586 182 231 364 262 153 112 100 26 87 118 279 221 498 179 220 375 248 147 111 99 27 85 111 251 222 429 179 212 343 238 144 111 98 28 84 109 423 327 375 176 207 307 228 143 111 99 29 82 104 395 713 - 176 212 282 220 139 110 30 oca? 97 312 63T 173 223 274 212 139 110 IIyo 31 82 271 501 T74 309 157 108 Total 2,850 4,047 5,751 7,877 12,991 6,875 6,441 10,630 8,115 5,327 3,754 3,167 Mean 91.9 135 186 254 464 222 215 343 270 172 121 106 Cfsm 1.16 1.71 2.35 3.22 5.87 2.81 2.72 4.34 3.42 2.18 1.53 1.34 In. 1.34 1.91 2.71 3.71 6.12 3.24 3.03 5.00 3.82 2.51 1.77 1.49 Ac-ft 5,650 8,030 11,410 15,620 25,770 13,640 12,780 21,080 16,100 10,570 7,450 6,280 Calendar year 1957: Max 942 Min 80 Mean 199 Cfam 2.52 In. 34.29 Ac-ft 144,400 Water year 1957-58: Max 859 Min 80 Mean 213 Cfsm 2.70 In. 36.65 Ac-ft 154,400 Discharge measurement made on this day. 254 ROGUE RIVER BASIN

3335. Red Blanket Creek near Prospect, Oreg.

Location.--Lat 42°47', long 122°26', In NE^ sec. 23, T. 32 S., R. 3 E., on right bank 3 miles northeast of Prospect. Drainage area. 40 sq ml, approximately. Records available.--May 1925 to September 1958. Gage.--Water-stage recorder. Altitude of gage Is 2,780 ft (from river-profile map). Prior to sept. 7, 1949, staff gages at several sites within 2j miles of present site at various daturas. Average discharge.--33 years, 115 cfs (83,260 acre-ft per year). Extremes. Maximum discharge during year, 646 cfs Feb. 16 (gage height, 4.44 ft): minimum, 78 cfs Nov. 8. 1925-58: Maximum discharge, 1,840 cfs Dec. 22, 1955 (gage height, 7.30 ft), from rating curve extended above 360 cfs on basis of slope-area measurement of peak flow: minimum observed, 34 cfs Sept. 3, 4, 25, Oct. 9, 16, 1931. Remarks.--Records fair. One diversion above station for irrigation below station. Revisions (water years). WSP 1318: 1926-28, 1930. WSP 1348: 1943(M), 1946(M), 1948(M) 1953.

Rating table, water year 1957-58 (gage height, In feet, and discharge, in cubic feet per second) (Shifting-control method used July 1 to Sept. 30) 2.6 3.6 310 2.9 107 4.0 470 3.2 180 4.5 670 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 88 80 92 145 180 216 129 156 261 Tee"174 *113 97 2 85 8O 91 140 160 204 129 162 *272 113 97 3 95 8O 90 130 155 192 125 168 350 162 115 95 4 97 79 94 120 150 180 123 171 296 163 115 94 5 100 79 87. 120 150 177 119 186 278 150 117 94 6 95 79 99 115 150 168 119 189 354 150 119 94 7 *93 79 174 *113 160 162 117 183 318 148 TT9 94 8 92 79 160 113 180 156 117 201 303 145 119 98 9 97 85 130 111 175 150 115 222 275 141 117 97 10 93 90 120 117 190 143 119 237 258 138 115 94 11 90 90 110 123 180 141 121 254 247 138 115 95 12 95 134 105 153 250 136 125 222 234 136 115 97 13 127 282 100 136 260 134 134 195 225 134 113 119 14 ToT 168 100 129 240 129 136 192 225 134 113 Too 15 97 125 100 159 350 129 *136 201 222 132 1O9 98 16 93 109 110 159 600 127 143 225 228 134 109 98 17 90 109 115 180 470 125 186 250 222 143 107 97 18 88 156 120 171 420 123 204 275 213 141 107 98 19 86 127 130 150 380 121 183 289 222 134 107 97 20 85 117 230 143 330 125 189 286 213 132 107 95 21 85 *111 300 134 300 134 231 286 207 129 106 95 22 84 104 210 125 270 129 234 282 204 129 104 *98 23 84 103 185 132 270 129 204 296 222 127 103 98 24 84 102 160 140 310 129 180 322 207 125 102 98 25 86 100 170 135 *350 134 171 292 189 123 100 98 26 92 99 205 130 292 132 162 289 183 123 100 97 27 85 99 185 130 254 129 153 289 183 119 99 97 28 82 97 200 200 234 129 145 264 174 119 98 97 - 29 82 94 220 "520350 129 141 250 171 117 98 95 30 61 92 129 143 247 165 115 98 95 31 81 160 220 134 282 Tl5 98 Total 2,819 3,228 4,532 4,743 7,410 4,475 4,533 7,363 7,121 4,228 3,370 2,916 Mean 90.9 108 146 153 265 144 151 238 237 136 109 97.2 Ac-ft 5,590 6,400 8,990 9,410 14,700 8,880 8,990 14,600 14,120 8,390 6,680 5,780 Calendar year 1957 : Max 498 Mln 76 Mean 136 Ac-ft 98,160 Water year 1957-58: Max 600 Min 79 Mean 155 Ac-ft 112,500 Peak discharge (base, 300 cfs). Nov. 13 (3:30 a.m.) 350 cfs (3.70 ft); Dec. 21 about 2 a.m.) 306 cfs (3.64 ft); Jan. 29 (time and discharge unknown); Feb. 16 (about 3 ° m 646 cfs (4.44 ft): June 5 (l p.m.) 414 efs (5.78 ft); June 6 (11 a.m.) 598 cfs (5.74 ft). * Discharge measurement made on this day. Note. No gage-height record Oct. 1-6, 23, 25-27, Dec. 8 to Jan. 6, Jan. 24 to Feb. 24; discharge estimated on basis of recorded range in stage, weather records, and records for Rogue River below South ForkiRogue River near Prospect, and Rogue River above Prospect. ROGUE RIVER BASIN 255

3350. Rogue River below South Pork Rogue River, near Prospect, Oreg.

Location. Lat 42°42'00", long 122°35'40", in NW^ sec. 16, T. 33 S., R. 2 E., on left bank at downstream side of county road bridge and 6 miles southwest of Prospect. Drainage area. 643 sq mi. Records available. October 1928 to September 1958. Prior to May 1929 monthly discharge only, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,707.26 ft above mean sea level (Bureau of Reclamation bench mark). Prior to Aug. 31, 1957, at datum 1.00 ft higher. Average discharge.--30 years, 1,789 cfs (1,295,000 acre-ft per year). Extremes. Maximum discharge during year, 10,200 cfs Feb. 16 (gage height, 8.08 ft); min imum, 659 cfs Sept. 29; minimum daily, 1,040 cfs Nov. 7, 9. 1928-58: Maximum discharge, 34,000 cfs Dec. 22, 1955 (gage height, 18.3 ft, pres ent datum), from rating curve extended above 12,000 cfs on basis of slope-area meas urement of peak flow; minimum since intake was lowered Aug. 18, 1934, 493 cfs Sept. 1, 1934 (prior to Aug. 18, 1934, minimum not determined). Remarks. Records good except those for period of no gage-height record, which are fair. Considerable diurnal fluctuation caused by powerplant 4 miles above station. Small diversions for irrigation above station.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.6 98O 2.0 1,320 4.0 3,570 8.0 1O,OOO Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,140 1,O80 1,540 2,56O 5,870 3.760 2,53O 2,880 5,500 2.02O 1,450 1,26O 2 1,170 1,O8O 1,520 2,510 3,490 5,500 2,560 5,040 5,51O 2,020 1,480 1,25O 5 1,540 1,080 1,290 2,350 3,240 5,520 2,550 5,19O 4,560 1,94O 1,500 1,250 4 1,560 1,O70 1.28O 2,220 5,030 5,090 2,250 5,210 5,900 1.90O 1,450 1,24O 5 1,540 1,070 1,290 2,110 2,950 2,990 2,160 5,430 5,480 1,850 1,420 1,24O 6 1,320 1,070 1,41O *2,050 2,850 2,850 2,150 5,500 *5,790 1,810 *1,410 1,25O 7 1,320 1,040 2,510 2,000 5,030 2,750 2,09O 5,44O 5,750 1,8OO 1,590 1,220 8 1,27O 1,080 2,160 1,990 5,17O 2,650 2,O80 5,620 5,670 1,750 1,400 1,270 9 *1,540 1,04O 1,860 1,960 5,170 2,550 2,05O 5,96O 5,44O 1,72O 1,390 1,280 10 1,500 1,140 1,72O 2,060 5,470 2,470 2,150 4,150 5,180 1,7OO 1,590 1,24O 11 1,240 1,180 1,650 2,21O 5,510 2,420 2,5OO 4.570 3,050 1,670 1,560 1,220 12 1,250 1,540 1,59O 2,860 4,450 2,550 2,54O 5,760 2,910 1,650 1,560 1,240 15 1,600 4,080 1,55O 2,79O 4,580 2,550 2,510 5,280 2,760 1,650 1.56O 1.510 14 1,560 573TO" 1,510 2,500 4,48O 2,250 2,560 5,150 2,69O 1,650 1.34O 1,560 15 1,540 2,180 1,460 2,81O 6,790 2,200 2,560 5,240 2,650 1,680 1,540 1,500 16 1,240 1,810 1,560 2,940 9,600 2,150 2,670 5,56O 2,640 1,700 1,550 1,270 17 1,200 1,670 1,790 3,130 7,850 2,110 *3,270 5,870 2,570 1,70O 1,540 1,26O 18 1,18O 1,99O 1,88O 3,100 *6,920 2,060 5,860 4,110 2,510 1,850 1,35O 1,220 19 1,140 2,4OO 2,200 2,81O 6,560 2,040 5,410 4,100 2,45O 1,650 1,550 1,260 20 1,120 1,970 5,970 2,650 5,860 2,080 3,40O 4,170 2,450 1,600 1,53O 1,240 21 1,120 1,810 5.720 2,470 5,210 2,270 5,960 4,O80 2,540 1,580 1,550 1,190 22 1,110 *1,670 3,580 2,510 4,800 2,250 4,110 5,980 2,52O 1,550 1,520 1,240 25 1,12O 1,600 2,830 2,560 4,820 2,250 5,500 4,O40 2,550 1,550 1,510 *1,21O 24 1,120 1,550 2,640 2,580 5,480 2,510 5,120 4,250 2,650 1,520 1,300 1,260 25 1,150 1,540 2,790 2,560 6,940 2,550 2,870 5,89O 2,50O 1,500 1,290 1.18O 26 1,190 1,520 3,470 2,450 5,530 2,510 2,710 5,840 2,180 1,500 1,290 1,220 27 1,150 1,500 5,120 2,440 4,68O 2,250 2,580 5,7OO 2,120 1,5OO 1,28O 1,190 28 1,12O 1,450 5,96O 4,260 4,140 2,220 2,520 5,450 2,O5O 1,500 1,280 1,21O 29 1,390 5,86O *7,100 2,240 2,510 5,22O 2,O10 1,480 1,280 1.170 50 1^090 1,540 5,180 6,040 2 , 260 2,64O 5,24O 1.990 1,450 1,280 ' 31 1.O70 2,8OO 4 550 2,550 5,41O 1,450 1,260 Total 58,060 48,05O 73,O50 88,75O 154,050 76,880 81,55O 115,150 85,31O 51,89O 41,940 57,45O Mean 1,228 1,602 2,356 2,862 4,788 2,480 2,711 5,649 2,844 1,674 1,555 1,248 Cfsm 1.91 2.49 3.66 4.45 7.45 5.86 4.22 5.67 4.42 2.6O 2.10 1.94 In. 2.20 2.78 4.23 5.15 7.75 4.45 4.70 6.54 4.95 5.00 2.43 2.16 Ac-ft 75,490 95,510 144,900 176,000 265, 9OO 152,500 161,500 224,400 169,200 102,900 85,190 74,240 Calendar year 1957: Max 9,020 Min 1,040 Mean 2,105 Cfsm 5.27 In. 44. 4O Ac-ft 1,522,000 Water year 1957-58: Max 9,6OO Min 1,040 Mean 2,385 Cfsm 5.71 In. 50.50 Ac-ft 1,725,OOO Peak discharge (base, 5,500 cfs) .--Dec. 21 (5 a.m.) 7,42O cfs (6.51 ft); Jan. Z9 (3 p.m.) 8,56O cfs' (7.21 ft); Feb. 16 (9 a.m.) 10,20O cfs (8.O8 ft); Feb. 25 (6:50 a.m.) 7,510 cfs (6.57 ft). * Discharge measurement made on this day. Note. No gage-height record July 7 to Aug. 5; discharge estimated on basis of weather records and records for station near Prospect. 256 ROOTE RIVER BASIN

3355. South Pork Big Butte Creek near Butte Palls, dreg.

Location. Lat 42"32" , long 122°33', In SW£ sec. 11, T. 35 S., R. 2 E., on right bank Just downstream from Ginger Creek and 1 mile east of Butte Palls. Drainage area. 135 sq ml. Records available. September 1910 to October 1911 (published as "at Butte Palls"), August to October 1915, October 1917 to September 1922, March 1925 to September 1958. Monthly discharge only for August, September 1915, published In WSP 1318. gage. Water-stage recorder. Altitude of gage Is 2,360 ft (from river-profile map). Sept. 21, 1910, to Sept. 30, 1922, staff gage at site 300 ft upstream at different daturas. Average discharge. 39 years (1910-11, 1917-22, 1925-58), 165 cfs (119,500 acre-ft per year). Extremes. Maximum discharge during year, 1.390 cfs Jan. 29 (gage height, 2.97 ft); mini mum, 86 cfs Aug. 7 (gage height, 0.57 ft). 1910-11, 1915, 1917-22, 1925-58: Maximum discharge, 2,770 cfs Dec. 22, 1955 (gage height, 4.50 ft), from rating curve extended above 1,600 cfs by logarithmic plotting; minimum, 39 cfs Oct. 14, 1931 (gage height, 0.32 ft). Remarks. Records good except those computed from staff-gage readings, which are fair, and those for periods of no gage-height record, which are poor. No regulation. Diversions for Irrigation of 1,000 acres above station and for municipal water supply for Medford (since 1927) and Butte Palls. Revisions (water years). WSP 1288: 1911, 1918-19, 1921-22, 1929. WSP 1318: 1918-19.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to June 3 June 4 to Sept. 30 0.6 82 0.5 72 1.0 183 .7 115 1.5 400 1.0 195 2.0 695 1.5 400 3.0 1,420 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 105 95 99 a300 669 a400 213 a!50 121 138 97 90 2 108 92 99 a260 572 a380 220 a!55 152 135 99 97 3 112 92 97 a230 500 g355 220 a!55 274 132 99 101 4 112 92 a 95 a210 440 a340 216 a!55 228 128 97 108 5 110 95 a95 a!90 395 a320 213 155 187 125 94 110 6 108 95 alOO g!77 346 a300 213 155 210 125 92 110 7 110 95 allO a!75 332 a280 209 152 225 120 90 110 8 103 95 a!20 a!75 314 a270 a200 149 225 120 90 110 9 101 95 108 g!80 305 a260 a!95 *149 219 120 90 108 10 99 103 105 al80 332 248 a!90 147 207 118 90 108 11 97 101 103 a!90 305 236 a!85 152 195 118 92 108 12 95 114 101 a200 420 228 al80 152 187 118 94 *110 13 99 213 alOO g220 478 236 al80 144 178 118 97 115 14 103 216 alOO a210 630 220 174 139 173 118 97 115 15 99 144 alOO a230 893 216 171 131 164 118 *97 110 16 99 126 124 *g264 1,060 209 171 129 159 128 99 106 17 97 119 *142 a250 *893 202 190 126 154 138 99 104 18 99 139 174 a230 816 *194 183 126 148 *132 99 104 19 99 155 a200 a220 662 190 177 124 151 122 99 106 20 99 147 a280 g209 572 194 174 121 148 120 101 106 21 99 136 a400 a210 500 205 177 119 143 115 104 106 22 *97 *129 a300 a210 461 209 205 119 138 113 101 108 23 99 124 g252 a215 435 213 *190 126 *151 110 99 108 24 99 a!20 a230 220 440 216 180 129 167 106 99 108 25 99 112 a260 216 610 228 174 121 151 104 99 106 26 99 112 a 350 213 559 220 168 117 143 101 a98 104 27 99 110 a450 209 a500 213 164 112 138 101 a95 104 28 99 105 a 600 662 a450 209 164 110 132 97 a95 104 29 97 103 a480 1.270 _ 213 161 108 132 94 a 98 104 30 97 101 g400 1,060 224 152 105 132 97 a95 101 31 97 a350 830 220 112 99 a92 Total 3,135 3,575 6,524 9,615 14,889 7,648 5,609 4,144 5,132 3,628 2,987 3,189 Mean 101 119 210 310 532 247 187 134 171 117 96.4 106 Ac-ft 6,220 7,090 12,940 19,070 29,530 15,170 11,130 8,220 10,180 7,200 5,920 6,330 Calendar year 1957 : Max 1,200 Min 90 Mean 191 Ac-ft 138,300 Waterwater year -LMO^-OH1957-58: : maxMax i,zru1,270 Min au90 neanMean IMZ192 RC-rtAc-ft j.o»,uuu139,000 Peak discharge (base. 450 cfs).--About Dec. 28 (time unknown) 676 cfs (1.97 ft)j Jan. 29 (12:30 p.m.) 1,590 efs (2.97 ft); Feb. 16 (1 a.m.) 1,160 efs (2.66 ft); Feb. 25 (5 p.m.) 656 cfs (1.95 ft). * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of weather records, recorded range in stage, and records for South Fork Little Butte Creek near Lake Creek, g Computed from once-daily staff-gage readings. ROGUE RIVER BASIN 257

3380 . Elk Creek near Trail , Oreg .

Location. Lat 42°39'50", long 122°44'50", in NE^NWi sec. 31, T. 33 S., R. IE., on right bank 0.4 mile upstream from mouth and 3.3 miles northeast of Trail. Drainage area. 133 sq mi. Records available. October 1945 to September 1958. Prior to March 1946 monthly discharge only, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,456.56 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to July 5, 1946, staff gage at various sites within one mile of present site at different daturas. July 5, 1946, to June 22, 1950, staff gage and June 23, 1950, to May 23, 1954, water-stage recorder, at site 0.3 mile upstream at datum 12.14 ft higher. Average discharge. 13 years, 255 cfs (184,600 acre-ft per year). Extremes . Maximum discharge during year, 8,460 cfs Jan. 29 (gage height, 11.04 ft); min- Imum 6.2 cfs Sept. 3,4. 1945-58: Maximum discharge 13,700 cfs Dec. 22, 1955 (gage height, 14.34 ft), from rating curve extended above 3,000 cfs on basis of slope-area measurement of peak flow; minimum observed, 0.9 cfs Aug. 29, 1946. Remarks . Records good. No regulation. Six diversions above station for irrigation of about 250 acres of which about 100 acres is below station.

Rating table, water year 1957-58 (gage height, In feet, and discharge. In cubic feet per second) (Shifting-control method used Oct. 1 to Nov. 13) 2.5 6. 4.5 435 2.7 14 5.0 690 2.9 23 6.0 1,400 3.2 49 S.O 3,670 3.5 92 10.0 6,760 4.0 230 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 5B"20 25 47 450 996 600 870 175 68 32 14 8.4 2 24 46 570 757 495 919 182 75 33 14 7.7 3 29 24 42 520 657 426 775 TS9 182 52 28 7.0 4 55 22 41 408 585 408 575 165 240 29 18 7.0 5 84 22 39 545 480 529 465 165 143 26 15 7.0 6 71 21 55 *321 ITS'412 293 426 162 *126 24 *14 7.7 7 96 ?T 204 321 265 394 159 175 22 11 7.7 8 5T 21 188 317 657 248 568 159 252"262 22 15 8.0 9 *44 22 133 289 685 234 545 165 21 14 8.0 10 40 31 104 537 1,210 223 572 172 188 21 14 7.7 11 36 56 85 585 851 216 394 175 146 20 14 7.4 12 33 62 75 1,650 1,210 206 372 157 117 19 13 8.0 13 39 798 67 1,440 1,260 216 363 165 100 18 12 11 14 47 7ST 60 818 1,590 206 329 126 82 18 12 20 15 42 426 59 712 3,280 195 285 117 71 17 11 15 16 36 220 62 696 5.640 188 262 114 67 25 11 12 17 32 140 203 657 1,910 172 *277 117 60 25 10 11 18 29 293 706 575 1,380 165 525 114 56 28 11 10 19 28 445 924 475 1,080 154 285 108 54 25 11 10 20 26 258 2,010 594 926 159 269 100 57 25 11 9.0 21 25 169 5,550 554 745 240 297 94 48 25 11 9.0 22 24 *130 1,260 509 655 258 368 89 44 18 11 8.0 23 24 102 690 479 580 244 372 98 46 17 10 *8.7 24 25 84 570 1,040 850 295 541 92 45 17 8.7 9.0 25 26 75 857 891 2,020 568 505 84 40 17 8.7 8.7 26 40 68 1,520 668 *1,530 455 269 77 37 15 8.0 8.7 27 38 60 1,060 540 954 376 257 74 56 16 57T 8.7 28 32 57 2,020 2,890 728 321 216 68 34 15 8.7 8.4 29 30 51 1,490 5,640 - 301 188 64 35"32 14 9.0 8.0 30 28 48 857 2 250 358 178 JcT 14 9.5 7.4 31 26 595 1^570 615 bl 14 9.7 Total 1,188 4,556 19,599 28,511 31,665 9,207 11,441 5,826 2,925 662 375.5 272.2 Mean 38.3 152 626 915 1,151 297 581 123 97.5 21.4 12.0 9.07 Ao-ft 2,360 9,040 58,480 56,150 62 , 800 18,260 22,690 7,590 5,800 1,510 741 540 Calendar year 1957-. Max 4,110 Min 3.1 Mean 253 Ac-ft 183,100 Water year 1957-58: Max 5,640 Min 7.0 Mean 312 Ac-ft 225,800 Peak discharge (base, 2,700 cfs). Dec. 21 (1 a.m.) 5,480 cfs (9.22 ft); Jan. 29 (12 m. ) 8,460 cfs (11.04 ft); Feb. 16 (2:30 a.m.) 4,660 cfs (8.59 ft). * Discharge measurement made on this day. 258 ROGUE RIVER BASIN

3390. Rogue River at Dodge Bridge, near Eagle Point, Oreg.

Location. Lat 42°31'30", long 122°50'30", in SE£ sec. 17, T. 35 S., R. 1 W., on right bank just upstream from Dodge Bridge, 0.6 mile downstream from Reese Creek, 4? miles northwest of Eagle Point, and at mile 134.9 (river-profile survey). Drainage area. 1,210 sq mi, approximately. Records available.--October 1938 to September 1958. Gage.--Water-stage recorder. Datum of gage is 1,273.66 ft above mean sea level, datum of 1929. Prior to Dec. 21, 1938, staff gage at same site and datum. Average discharge. 20 years, 2,709 cfs (1,961,000 acre-ft per year). Extremes.--Maximum discharge during year, 24,500 cfs Jan. 29 (gage height, 8.00 ft); minimum, 996 cfs Sept. 30; minimum daily, 1,290 cfs Sept. 30. 1938-58: Maximum discharge, 75,000 cfs Dec. 22, 1955 (gage height, 12.90 ft), from rating curve extended above 16,000 cfs on basis of peak flow at stations upstream and downstream; minimum, 611 cfs Aug. 6, 14, 29, Sept. 9, 1940 (gage height, 0.99 ft); minimum daily, 830 cfs Sept. 1, 1940. Remarks. Records good. Some diurnal fluctuation caused by powerplant 30 miles upstream. Diversions for irrigation above station; most of flow of Big Butte Creek is diverted near Butte Falls. Revisions (water years).--WSP 1094: 1942(M), 1943, 1945(M), 1946.

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,470 1,350 1,620 5,940 7,820 5. BOO 4,590 5,580 3,720 2,310 1,620 1,400 2 1,480 1,340 1,620 4,150 6,540 5,280 4,880 3,566 5,680 2,550 1,620 1,400 3 1,600 1,350 1,560 5,740 5,830 4,970 4,460 3,660 4,800 2,220 1.690 1,400 4 1,740 1,350 1,510 5,540 5,210 4,530 5,920 5,720 4.970 2,170 1,626 1,400 5 1,780 1.510 1,480 5,080 4,950 4,330 5,580 5,880 4,150 2,120 1,620 1,400 6 1,740 1,310 1,560 2,900 4,570 4,180 5,440 4,000 *4,550 2,070 1,590 1,590 7 1,800 1,360 2,420 2,850 4,926 4,000 3,120 5,920 4,710 2,060 1,560 1,580 8 *1,630 1,350 2,780 2,800 5,380 3,900 3,170 4,020 4,590 1,990 1,560 1,390 9 1,620 1,560 2,260 2.710 5,600 3,660 5.080 4,550 4,400 1,950 1,550 1,460 10 1,630 1,450 2,040 *2,920 7,880 5,520 3,140 4,550 4,000 1,940 1,550 1,390 11 1,560 1,600 1,920 3,640 6,040 5,360 3,290 4,920 3,740 1,910 1,550 1,390 12 1,490 1,660 1,860 7,680 8,660 3,290 3,320 4,376 3,540 1,890 1,530 1,400 13 1,740 5,050 1,780 6,570 8,540 5,290 5,440 3,860 5,540 1,860 1,520 1,550 14 1.920 5,450 1,740 4,550 9,700 3,170 5,540 3,620 3,170 1,840 1,520 1.590 15 1,690 3,300 1,690 4,780 14,800 3,080 5,460 3,640 3,140 1,810 1,510 1,460 16 1,560 2,540 1,780 4,760 18.600 2,980 3,480 5,840 3,100 1,920 1,510 1,430 17 1,480 2,190 5,070 4,660 13,800 2,900 3,920 4,2OO 2,990 2,040 1,510 1,590 18 1,470 2,540 4,070 4,590 *11,100 2,800 *4,850 4,400 2,920 2,170 1,510 1,580 19 1,430 3,340 4,830 4,070 10,000 2.740 4,260 4,570 2,900 1,970 1,480 1,380 20 1,440 2,720 5,690 3,760 8,860 2,746 4,090 4,480 2,900 1,870 1,480 1,360 21 1,430 2,400 15.400 5,500 7,700 5,070 4,550 4,440 2,740 1,830 1,490 1,350 22 1,390 *2,210 7,026 3,160 6,880 5,100 5,070 4,350 2,650 1,810 1,480 1,360 23 1,430 2,070 4,850 5,880 6,760 5,070 4,460 4,350 2,870 1,760 1,470 1,360 24 1,440 2,020 4,760 5,240 8,030 5,250 5,980 4,510 3,140 1,750 1,460 1,550 25 1,460 1,970 5,070 4,780 12,900 3,460 3,700 4,510 2,740 1,740 1,440 1,550 26 1,550 1,890 6,760 4,110 9,450 3,520 3,480 4,150 2,560 1,700 1.420 1,550 27 1,470 1,850 6,240 5,860 7,640 3,320 3,290 4,040 2,470 1,690 1.4ZO 1,520 28 1,430 1,780 9,560 13,400 6,540 5,190 5,250 5,840 2,440 1,680 1,420 1,320 29 1,420 1,740 7,910 20, 500 5,250 5,170 5,560 2,550 1,680 1,420 1,340 30 1,400 1,650 5,700 14,300 5,740 5,250 3,440 2,290 *1,680 1,420 1.290 31 1.550 4,550 9,940 4,480 3,640 1.620 1,420 Total 48,040 65,420 123,080 167,960 234,700 111,950 115,210 125,530 101,320 59,400 46,960 41,730 Mean 1,550 2,114 3,970 5,418 8,382 5,611 3,774 4,049 3,577 1,916 1,515 1,591 Ac-ft 95,290 125,800 244,100 353,100 465,500 222,000 224,500 249,000 201,000 117,800 95,140 82,770 Calendar year 1957: Max 18,000 Mln 1,260 Mean 2,988 Ac-ft 2,163,000 Water year 1957-58: Max 20,500 Mln 1,290 Mean 3,390 Ac-ft 2,454,000

Peak discharge (base, 9,000 cfs). Dec. 21 (3 a.m.) 16,100 cfs (6.46 ft); Dec. 28 (9 a.m.) 9,900 cfs (4.95 ft); Jan. 12 (4:50 p.m.) 10,000 cfs (4.97 ft): Jan. 29 (1:50 p.m.) 24,500 cfs (8.00 ft); Feb. 10 (12:50 a.m.) 11,100 cfs (5.15 ft); Feb. 16 (6 a.m.) 19,800 cfs (7.10 ft); Feb. 25 ( 9 a.m.) 15,900 efs (5.84 ft). * Discharge measurement made on this day. ROGUE RIVER BASIN 259

3415. South Pork Little Butte Creek near Lake Creek, Oreg.

Location. Lat 42°24'30", long 122°36'00", in SE^ sec. 29, T. 36 S., R. 2 E., on left bank a quarter of a mile upstream from intake of Rogue River Valley Canal and 1^ miles southeast of Lake Creek Post Office. Drainage area. 138 sq mi. Records available.--April 1921 to September 1958. Gage. Water-stage recorder. Altitude of gage Is 1,720 ft (by barometer). Prior to June 17, 1921, staff gage at same site and datum. Average discharge. 37 years, 109 cfs (78,910 acre-ft per year). Extremes. Maximum discharge during year, 2,110 cfs Jan. 28 (gage height, 4.95 ft), from rating curve extended above 510 cfs by logarithmic plotting; minimum, 17 cfs Aug. 30. 1921-58: Maximum discharge, 3,920 cfs Jan. 7, 1948 (gage height, 6.48 ft), from rating curve extended above 840 cfs by logarithmic plotting; minimum, 2 cfs Aug. 10, 1931 (gage height, 0.97 ft). Remarks. Records good except those for periods of no gage-height record, which are poor. Diversions for irrigation of 1,000 acres above station. Revisions (water years).--WSP 934: 1925(M). WSP 1398: 1922, 1927(M), 1937, 1941-42.

Rstlng tsble, wster year 1957-58 (gage height, In feet, and dlschsrge, In cubic feet per second) 1.2 2.0 210 1.3 2.5 440 1.5 61 3.0 740 1.7 110 4.0 1,400 Discharge, In cubic feet per second, wster yesr October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July. Aug. Sept. 1 29 23 3^0"340 206 385 405 182 192 110 88 332 19 2 37 214 331 365 186 196 113 102 a32 "3 "Jo"50 23 340 178 300 331 186 196 200 T3 331 22 4 23 340 158 *268 295 175 196 172 71 a30 22 5 39 *24 340 125 250 277 168 200 131 63 a28 22 6 36 23 a45 3124 226 268 161 203 161 61 326 20 7 36 23 350 122 250 242 154 203 196 59 325 19 8 31 23 345 116 254 230 154 200 218 55 324 22 9 31 23 342 110 234 226 *154 200 242 53 324 20 10 29 325 340 119 226 210 168 203 T52 50 324 20 11 *28 330 340 108 218 192 182 222 164 48 324 22 12 26 350 *42 T37 39T *182 200 226 161 46 323 23 13 29 3100 46 158 395 189 222 253 144 42 323 *28 14 40 3200 46 *131 488 175 242 186 125 42 *23 29"31 15 32 sTSo" 46 164 620 178 254 178 113 42 25 16 29 alOO 75 161 782 161 259 172 102 52 26 28 17 25 390 105 161 668 158 286 172 92 73 28 25 18 25 380 161 150 614 150 282 172 *88 68 28 23 19 25 alOO 128 134 548 147 272 168 95 53 25 23 20 24 390 131 134 494 TTZ 272 161 90 46 26 24 21 24 380 446 131 430 203 295 150 80 42 36 24 22 24 370 238 110 405 186 350"336 144 Us"73 39 29 25 23 25 360 168 125 405 186 147 *37 28 26 24 29 a55 168 131 692 189 264 144 144 36 28 26 25 29 350 210 137 994 186 246 131 105 36 26 26 26 28 3.48 300 131 674 189 230 116 95 34 24 24 27 25 345 365 137 548 182 214 108 90 32 25 23 28 24 344 650 1,040 464 178 203 102 85 a31 24 23 29 23 342 42F 1.290 - 178 196 95 80 330 23 20 30 22 340 300 7$2 186 192 92 78 335 19 20 31 2S 238 506 175 105 331 19 Total 917 1,757 4,750 7,400 12,558 6,591 6,635 5,183 3,827 1,575 808 699 Mean 29.6 58.6 153 239 448 213 221 167 128 50.8 26.1 23.3 Ac-ft 1,820 3,480 9,420 14,680 24,910 13,070 13,160 10,280 7,590 3,120 1,600 1,390 Cslendsr yesr 1957: Max 1,060 Mln 12 Mean 131 Ac-ft 94,560 Water year 1957-58: Max 1,290 Mln 19 Mean 144 Ac-ft 104,500 Pesk disciharge (bsse, 500 cfs). Dec. 21 (7 s.m.) 734 cfs (2.99 ft); Dec. 28 (8:30 s.m.) 842 cfs (3.17 ft), t); Jan.._... 28_. (6:30,. p.m.) 2,110 cfs (4.95 ft); Feb. 16 (3 s.m.) 926 cfs (3.31 ft); Feb. 24 (9:30 p.m.)i.m.) 1.4301,430 cfs (4.04 ft). * Discharge messurement made on this dsy. 3 No gsge-helght record; discharge estimated on basis of westher records and records for North Fork Little Butte Creek near Lske Creek snd South Fork Big Butte Creek nesr Butte Pslls. 260 ROGUE RIVER BASIN

3425. North Pork Little Butte Creek at Pish Lake, near Lake Creek, Oreg.

Location. Lat 42°23', long 122°21', in SE^ sec. 4, T. 37 S., R. 4 E., on right bank hair a mile downstream from Pish Lake and 14 miles east of Lake Creek. Drainage area. 18 sq mi, approximately. Records available. October 1914 to July 1915, June 1916 to September 1958. Monthly discharge only November 1916 to May 1917, published in WSP 1318. Prior to 1938, "Lake Creek" sometimes published as "Lakeoreek." Gage.--Water-stage recorder and, since Nov. 8, 1955, concrete control. Datum of gage is 4",571.41 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Oct. 1, 1914, to July 31, 1915, staff gage at site half a mile upstream at different datum. June 1, 1916, to July 9, 1918, staff gage and July 10, 1918, to Oct. 28, 1932, water-stage recorder, at site a quarter of a mile upstream at different daturas. Average discharge. 42 years (1916-58), 36.1 cfs (26,140 acre-ft per year). Extremes. Maximum discharge during year, 132 cfs Aug. 11, 12 (gage height, 1.74 ft); minimum, 2.2 cfs Oct. 1. 1914-58: Maximum discharge, about 940 cfs June 5, 1917, computed from rate of change in contents in reservoir after break in dam occurred; no flow at times. Remarks. Records good except those for periods of shifting control or backwater, which are fair, and those for periods of no gage-height record, which are poor. Since 1915, Pish Lake (see p. 275) has stored water for irrigation by Medford Irrigation District. Cascade Canal diverts from Fourmile Lake in Klamath River basin and discharges into lava bed 1? miles above Pish Lake; diversion began August 1923. No diversion from creek above station. Revisions (water years). WSP 654: Drainage area. WSP 1218: 1917(M).

Rating table, water year 1957-58, except periods of shifting control or backwater from sandbags (gage height, in feet, and discharge, in cubic feet per second) 0.6 3.0 0.9 8.5 1.3 .7 4.5 1.0 12 1.5 6.0 1.1 17 1.8 150 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 6.7 8.5 14 if 23 27 3"O~30 43 71 55 *123 77 2 372"3.0 TO> 14 I? TT TS 71 53 118 73 3 8.5 14 19 23 27 30 43 75-77 51 102 71 4 3.3 8.5 15 19 23 27 30 43 50 91 *67 5 3.3 8.7 15 19 23 27 30 44 71 102 63 6 3.6 8.8 16 19 24 27 30 44 71 69 115 57 7 3.8 9.2 16 19 24 27 30 44 73 55 110 61 8 3.9 9.6 16 19 24 27 30 44 75 59 102 57 9 4.2 9.6 16 19 24 27 30 *44 73 82 110 46 10 **4.5 9.9 15 19 24 27 32 44 69 *86 115 44 11 4.6 9.9 15 19 24 27 32 44 65 91 123 36 12 5.0 11 15 20 25 28 32 44 63 98 132 33 13 5.0 13 15 20 25 28 32 44 61 102 TOT 19 14 5.1 12 15 20 25 28 33 44 59 105 120 20 15 5.1 12 15 20 25 28 34 43 59 108 112 *27 16 5.2 12 16 20 25 28 34 43 *57 108 112 23 17 5.4 12 16 20 25 28 34 43 57 108 108 23 18 5.6 13 16 20 "2*6"26 28 34 43 55 88 100 23 19 5.7 14 16 21 28 35 43 53 84 100 23 20 6.0 II 16 21 26 28 35 43 51 84 105 23 21 6.2 14 16 21 26 28 36 *43 50 91 91 23 22 6.2 14 16 21 26 28 38 43 48 93 75 23 23 6.5 14 17 21 26 28 38 43 53 98 24 24 6.8 14 17 21 26 29 38 43 57 100 95 24 25 7.2 14 17 22 26 29 39 44 53 104 86 25 26 8.2 14 18 22 26 29 39 51 51 106 82 26 27 8.5£75 14 18 22 26 29 41 55 51 110 77 28 28 14 19 22 26 29 41 57 51 112 77 30 29 8.5 14 T¥ 22 29 41 61 50 116 91 15 30 8.5 14 22 29 43 65 50 91 12 31 8.5 19 23 30_ li 120 82 Total 175.8 352.7 501 630 695 866 1,031 1,446 1,822 2,755 3,136 1,096 Mean 5.67 11.8 16.2 20.3 24.8 27.9 34.4 46.6 60.7 88.9 101 36.5 Ac-ft 349 700 994 1,250 1,380 1,720 2,040 2,870 3,610 5,460 6,220 2,170 Calendar year 1957: Max 144 Min 2.4 Mean 50.2 Ac-ft 36,340 Water year 1957-58: Max 132 Min 3.0 Mean 39.7 Ac-ft 28,760 ROGUE RIVER BASIN 261

3430. North Pork Little Butte Creek near Lake Creek, Oreg.

Location. Lat 42°24'10", long 122°32'20", in SW-j sec. 25, T. 36 S., R. 2 E., on right bank a quarter of a mile upstream from Hanley South Canal diversion and 41 miles east of Lake Creek Post Office. Drainage area. 38 sq mi, approximately. Records available.--September 1911 to March 1913, July to September 1917, May 1922 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Pub lished as "near Lakecreek" 1911-13 and as "above Medford intake, near Lakecreek" (some times Lake Creek) 1922-28, 1931-40. Records for April to September 1916, May 1917 to September 1919, April to September 1921, and October 1923 to September 1924 at site 3 miles upstream not equivalent owing to diversions and difference in drainage areas. Gage. Water-stage recorder. Datum of gage is 2,125.01 ft above mean sea level, datum of 1929. Sept. 10, 1911, to Mar. 31, 1913, and July 1 to Sept. 30, 1917, staff gages near present site at different datums. Average discharge. 37 years (1911-12, 1922-58), 72.9 cfs (52,780 acre-ft per year). Extremes. Maximum discharge during year, 336 cfs Jan. 28 (gage height, 2.41 ft); minimum, 33 cfs Oct. 2, 9-11. 1911-13, 1917, 1922-58: Maximum discharge, 1,430 cfs Dec. 11, 1956 (gage height, 3.56 ft), from rating curve extended above 170 cfs; minimum, 11 cfs Oct. 29 to Nov. 8, 1931. Remarks. Records good. Natural flow of stream affeeted by transmountain diversion and storage reservoir above station. Cascade Canal diverts from Pourmile Lake, in Klamath River basin, into Pish Lake. Diversions for irrigation of 100 acres above station. Revisions (water years) . WSP 1518: 1912-13. Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Nov. 13 Nov. 14 to Sept. 30 1.3 27 1.3 2.0 160 1.5 46 1.5 2.2 235 1.7 78 1.7 2.0 160 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 38 39 52 88 115 105 82 *90 108 92 123 105 Z 37 40 52 90 108 103 84 90 113 90 123 101 3 43 40 52 80 103 101 S4 92 143 *88 118 101 4 38 40 51 75 97 99 84 90 TTs 86 110 97 5 36 *42 BT 71 90 99 82 90 108 84 113 92 6 37 42 54 70 86 97 80 90 118 101 123 90 7 36 42 60 66 *84 97 79 90 121 90 121 92 e 34 43 56 65 82 97 79 88 121 92 *126 90 9 33 43 53 65 80 94 *79 88 115 105 128 79 10 33 45 53 66 79 92 79 88 110 110 134 77 11 33 44 53 65 79 9E 79 *92 108 113 137 68 12 36 47 *52 75 88 *90 79 90 *105 115 143 62 13 39 130 52 75 97 92 79 90 103 118 123 *50 14 46 TT3 51 *70 123 90 80 88 101 121 137 47 15 37 71 51 8E 126 92 80 88 99 121 131 62 16 37 61 60 77 126 90 80 86 99 121 128 56 17 36 57 62 79 118 88 84 86 97 121 126 56 18 36 75 66 73 113 86 86 86 94 118 123 56 19 36 70 68 70 108 86 86 84 97 110 118 56 20 37 66 70 70 105 88 86 84 92 108 123 56 21 37 6E 134 71 103 90 90 82 90 110 118 57 22 37 58 88 68 101 90 97 86 88 110 101 58 23 38 57 73 70 99 90 92 86 99 113 108 58 24 39 54 84 73 108 88 90 84 101 115 113 62 25 39 53 9E 75 1E3 90 90 84 94 118 110 71 26 39 53 110 75 118 88 88 88 92 121 108 75 27 39 53 126 75 113 86 88 92 90 123 103 92 28 39 53 167 227 110 84 88 97 90 123 103 97 29 39 52 134 203 - 86 88 99 88 123 108 76 30 39 52 108 157 84 90 101 88 123 113 40 31 39 94 126 82 105 126 110 Total 1,162 1,697 E,329 2,692 2,88E 2,836 2,532 2,774 3,087 3,409 3,703 2,179 Mean 37.5 56.6 75.1 86.8 103 91.5 84.4 89.5 103 110 119 72.6 Ac-ft 2,300 3,370 4,620 5,340 5,720 5,630 5,020 5,500 6,120 6,760 7,340 4,320 Calendar year 1957: Max Ell Min 33 Mean 96.9 Ac-ft 70,170 Water year 1957-58: Max £27 Min 33 Mean 85.7 Ac-ft 62,040 Discharge measurement made on this day. ROGUE RIVER BASIN

3500. Emigrant Creek near Ashland, Oreg. Location. Lat 42°09'50", long 122°36'10" (revised), in NEij see. 20, T. 39 S., R. 2 E., on right bank 1,100 ft downstream from Emigrant Gap Reservoir Dam and 6 miles southeast of Ashland. Drainage area. 64.3 sq mi. Records available.--January to June 1920, October 1920 to July 1922, February 1923 to May 1924 (incomplete), October 1924 to November 1925, February to August 1926, October 1926 to September 1928, April 1929 to September 1930, April 1931 to October 1932 (incomplete), April 1933 to September 1935, April 1936 to September 1939 (incomplete), April 1940 to September 1947, January 1948 to October 1952 (incomplete), December 1952 to September 1958. Monthly discharge only for some periods, published in WSP 1318. ;e_.--Water-stage recorder. Datum of gage is 2,053.73 ft above mean sea level, datum of 929 (levels by Bureau of Reclamation). Prior to Oct. 1, 1926, water-stage recorder or staff gage at several sites within 800 ft upstream of present site at various datums. Average discharge . 16 years (1924-25, 1926-28, 1929-30, 1934-35, 1940-42, 1943-47, 1953-58), 41. f cfs (29,970 acre-ft per year) including flow in East lateral. Extremes.--Maximum discharge during year, 1,680 cfs Feb. 24 (gage height, 6.13 ft), from rating curve extended above 650 cfs on basis of slope-area measurement of peak flow; no flow at times. 1920-58: Maximum discharge, 5,260 cfs Feb. 20, 1927, by computation of peak flow over dam; no flow at times. Remarks.--Records fair except those below 2 ofs, which are poor. Figures of daily discharge do not include water diverted from Emigrant Gap Reservoir above station by East lateral. Flow regulated since 1924 by Emigrant Gap Reservoir (see p. 275). Several diversions above station for irrigation; the principal diversion canals are Ashland lateral and East lateral. Water diverted by Keene Creek Canal from Klamath River basin into Emigrant Creek above station. Revisions (water years).--WSP 1448: 1921, 1927-28, 1937, 1953(M). Rating tables, water year 1957-58 (gage height, In feet, and discharge. In cubic feet per second) (Backwater from beaver dam Oct. 1 to Jan. 14; shifting-control method used Jan. 15-29, Apr. 3-23, May 7 to June 11, Aug. 25 to Sept. 22) Oct. 1 to Sept. 22 Sept. 23-30

0.0 1.0 20 2.5 200 -0.32 0.1 2.8 .1 1.3 39 3.0 310 -.3 .2 6.2 1.5 1.5 58 4.0 630 -.2 .7 14 4.0 120 5.0 1,060 -.1 1.6 25 9.0 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 0 0.2 0.4 156 148 74 2.3 0.6 0.7 26 24 2 0 .2 .4 156 132 131 272 .6 ~7s.6 22 25 3 0 .2 .4 154 102 126 2.0 .6 22 24 4 0 .2 .4 154 60 101 2.0 .6 .6 22 24 5 0 .2 .4 154 44 91 1.8 _.4. 1.5 21 16 6 0 .2 .4 153 82 82 1.6 .4 12 16 7.2 7 0 .2 .4 153 78 78 1.5 .4 24 16 7.2 8 0 .2 .4 153 73 *77 1.6 .4 *24 16 7.2 9 0 .2 .4 152 71 77 1.7 .4 26 16 7.2 10 0 .2 .4 152 69 79 1.7 .4 22 17 6.9 11 0 .2 .4 150 64 81 1.7 5.2 31 21 *6.6 12 0 .2 .4 152 60 81 1.7 15 31 *26 6.6 13 0 .2 .4 153 66 85 *1.7 19 31 30 6.6 14 0 .2 .4 153 64 85 1.7 20 31 33 6.6 15 0 .2 *19 350 73 79 1.6 20 32 33 6.9 16 .3 38 614 73 81 1.5 18 32 29 6.6 17 .3 38 393 65 93 1.4 11 26 24 6.9 18 .3 70 315 59 90 1.3 4.6 18 24 7.2 19 .3 91 242 59 86 1.2 2 8.8 24 7.2 20 .3 89 200 66 84 .9 7.2 2.. 5 24 7.2 21 .3 87 176 97 85 .9 7.2 4.2 20 6.9 22 .3 72 164 88 86 1.0 3.4 15 17 11 23 .3 51 159 78 79 .8 3.1 15 17 **.! 24 .3 51 568 77 57 .8 17 16 14 TT 25 .3 51 708 71 47 .8 14 19 19 .1 26 .3 50 342 68 35 .7 11 22 37 15 27 .3 50 236 62 29 .6 6.9 22 37 23 28 .3 71 184 58 24 .6 2.6 23 36 23 29 .3 433 - 71 *13 .5 .8 28 34 22 5 4 30 .3 487 81 !_ .6 .7 28 29 21 31 .3 284 77 .6 28 24 Total 0 1.5 7.8 2,037.6 6,796 2,336 2,221.4 41.0 193.5 586.5 746 339.3 Mean 0 0.05 0.25 65.7 243 75.4 74.0 1.32 6.45 18.9 24.1 11.3 Ac-ft 0 3.0 15 4,040 13,480 4,630 4,410 81 384 1,160 1,480 673 (t) 0 0 0 0 0 0 9.41 51.9 11.9 58.3 55.0 35.6 Adjust sd for d iversion by East lateral Mean 0 0.05 0.25 65.7 243 75.4 83.4 53.2 18.4 77.2 79.1 46.9 Ac-ft 0 3.0 15 4,040 13,480 4,630 4,970 3,270 1,090 4,740 4,860 2,790

Calendar year 1957: Max 608 Min O Mean 34, .3 Ac-ft 24, 820 Water year 1957-58: Max 708 Min O Mean 41,.9 Ac-ft 30, 360 Adjusted Calendar year 1957: Mean 53.7 Cfsm In. Ac-ft 38, 860 Water year 1957-58: Mean 60.6 Cfsm In. Ac-ft 43, 890 Discharge measurement made on this day.t Diversion, in cubic fe lateral. ** Field estimate made on this day. Note. Doubtful or no gage-height record Oct. 1 to Jan. 14, May 2-6, Sept. 24, 25; discharge interpolated. ROGUE RIVER BASIN 263

3575. Bear Creek at Medford, Oreg.

Location. Lat 42°19'40", long 122°52'10", in NWtr sec. 30, T. 37 S., R. 1 W., on left bank 40 ft upstream from Main Street Bridge in Medford. Drainage area. 289 sq mi (revised). Records available. March 1915 to June 1920 (no low-flow records), October 1920 to Septem- ber 1958.Monthly discharge only for some periods, published in WSP 1318. Gage. Water-stage recorder and since Dec. 30, 1947, concrete control. Datum of gage is 1,343.98 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Mar. 1, 1915, to June 30, 1918, staff gage and Sept. 20, 1918, to Feb. 9, 1919, water- stage recorder, at site 40 ft upstream at datum 0.58 ft lower. Feb. 10, 1919, to Jan. 6, 1943, water-stage recorder and Jan. 7 to Sept. 9, 1943, staff gage, at site 40 ft upstream at datum 0.42 ft higher. Sept. 10, 1943, to Dec. 30, 1947, water-stage recorder at site 40 ft upstream at same datum. Average discharge.--38 years (1920-58), 104 cfs (75,290 acre-ft per year). Extremes. Maximum discharge during year, 6,220 cfs Jan. 28 (gage height, 5.55 ft); mini mum, 14 cfs Aug. 11. 1915-58: Maximum discharge, 9,400 cfs Dec. 22, 1955 (gage height, 7.50 ft, from floodmarks); maximum gage height, about 11.0 ft Feb. 20, 1927, from floodmarks, present datum, site then in use; practically no flow at times. Remarks. Records good except those for periods of no gage-height record, which are poor. Flow partly regulated since 1924 by Emigrant Gap Reservoir (see p. 275). Numerous diversions for irrigation above station. Revisions (water years). WSP 1044: 1944. WSP 1448: 1916, 1917(M), 1918-20, 1922, 1924, 1927(M), 1928, 1930. Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) Oct. 1 to Dec. 27 Dec. 28 to Sept. 30 0.4 31 1.0 175 0.3 19 2.0 680 .5 47 1.5 390 .5 46 3.0 1,640 .7 90 2.0 690 85 4.0 3,090 1.0 167 5.0 4,960 1.5 370 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 33 37 47 146 680 768 307 124 198 90 21 26 2 39 33 45 174 561 652 370 110 232 100 59 27 3 55 34 45 140 522 610 400 102 418 73 79 27 4 57 36 44 126 462 522 338 98 256 63 59 30 5 61 36 44 115 456 492 320 100 188 56 31 31 6 63 36 45 105 415 462 298 105 229 44 30 30 7 61 36 45 102 462 426 276 90 307 37 25 24 e 53 34 47 100 450 410 272 98 366 42 *29 30 9 47 34 43 95 420 385 264 115 ~502438 42 24 37 10 45 39 43 102 395 *375 264 126 42 21 30 11 47 44 41 113 385 356 268 *149 248 42 21 *30 12 47 42 41 174 540 338 268 152 236 42 19 34 13 49 165 41 181 510 405 268 134 229 42 25 38 14 59 326 41 143 816 356 276 113 213 42 25 40 15 51 136 39. 264 1,190 370 276 108 198 42 29 37 16 51 95 *51 236 1,900 361 276 113 188 54 26 36 17 57 83 108 210 1,180 330 307 113 178 167 26 34 18 53 98 160 291 974 307 302 121 146 146 30 34 19 39 121 88 302 816 298 289 146 152 90 32 36 20 36 100 92 298 696 307 298 132 a!55 81 40 40 21 36 98 571 *298 596 361 298 126 a!60 57 52 43 22 34 81 254 276 540 361 302 129 a!60 a45 42 44 23 57 72 163 264 534 338 280 184 a!50 *36 31 56 24 69 65 151 289 1,300 338 *236 210 a!40 34 26 54 25 55 *61 163 280 5.890 320 221 164 *129 29 29 61 26 53 59 206 260 1,690 316 213 137 110 27 29 56 27 45 57 468 256 1,160 294 198 126 102 27 27 65 26 44 53 784 2,740 912 276 184 137 92 29 27 54 29 42 51 325 *5J 090 280 155 137 '8579 26 27 48 30 41 49 217 2,050 356 131 137 23 30 52 31 39 1,120 312 158 5g 29 Total 1,518 2,211 4,619 14,340 24,452 12,082 8,161 3,994 6,084 1,708 1,000 1,184 Mean 49.0 73.7 149 463 873 390 272 129 203 55.1 32.3 39.5 Ac-It 3,010 4,390 9,160 28,440 48,500 23,960 16,190 7,920 12,070 3,390 1,980 2,350 Calendar year 1957: Max 3,100 Min 10 Mean 171 Ac-ft 124,200 Water year 1957-58: Max 3,890 Min 19 Mean 223 Ac-ft 161,400

June 9 (2 a.m.) 522 cfs (1.77 ft). * Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of records for Emigrant Creek near Ashland and unpublished records for Bear Creek Canal. 264 ROGUE RIVER BASIN

3590. Rogue River at Raygold, near Central Point, Oreg.

Location. Lat 42°26'15", long 122°59'10", In SW£ sec. 18, T. 36 S., R. 2 W., on right bank at Raygold, 0.2 mile downstream from Gold Ray Dam, 1.3 miles downstream from Bear Creek, and 5.6 miles northwest of Central Point. Drainage area. 2.020 sq ml, approximately. Records available . August 1905 to September 1958. Prior to October 1921, published as "near Tolo." ;e. Water-stage recorder. Datum of gage Is 1,121.78 ft above mean sea level, datum of "29. Prior to Sept. 19, 1914, staff gage and Sept. 19, 1914, to Sept. 30, 1956, water-stage recorder, at site 300 ft upstream at same datum. Average discharge . 53 years, 2,928 cfs (2,120,000 acre-ft per year). Extremes . --Maximum discharge during year, 44,900 cfs Jan. 28 (gage height, 13.68 ft); minimum, 1,080 cfs Sept. 24 (gage height, 0.75 ft); minimum dally, 1,350 cfs Sept. 7. 1905-58: Maximum discharge, 110,000 cfs Feb. 21, 1927 (gage height, 24.8 ft, from floodmark, site then In use), from rating curve extended above 36,000 cfs by loga rithmic plotting, and Dec. 22, 1955 (gage height, 21.55 ft, from floodmark, present site), from rating curve extended above 25,000 cfs on basis of slope-area measurement of peak flow; minimum not determined; minimum dally, 616 cfs Sept. 6, 1931. Greatest flood known occurred during winter of 1861-62 and reached a stage of about 32 ft; flood In February 1890 reached a stage of about 27.5 ft, from Information by Corps of Engineers. Remarks . Records good. Diurnal fluctuation caused by powerplant Just above station. Many diversions for Irrigation above station. Revisions (water years). WSP 1248: 1906, 1914(M), 1915. WSP 1398: 1910(M), 1927(M).

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 1.0 1,290 6.0 11,600 2.0 2,400 9.0 22,000 4.0 6,230 13.0 41,200 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,560 1,430 1,760 5,150 10,400 7.970 5,700 3.690 4,280 2,330 1,490 1,380 2 1,590 1.400 1,760 5,540 8,610 7,040 6,010 3,870 4,300 2,440 1,480 1,380 3 1,800 1,400 1,740 4,820 7,790 6,640 5,920 3,940 5,970 2,370 1.650 1,380 4 1,900 1,400 1.700 4,220 6,870 6,010 4,990 4,020 6.670 2,260 1,510 1,380 5 1,960 1,400 1,7'60 3,810 6,450 5,570 4,480 4,140 5,020 2,140 1,500 1,380 6 1,880 1,400 1,740 *3,580 5.940 5,380 4,240 4,340 *5,150 2,070 1,470 1,380 7 1,890 1,400 2,300 3,410 6,250 4,930 4,060 4,260 6,210 2,080 1,450 1.350 8 »1,870 1,400 3,100 3,330 6,920 4,880 3,690 4,340 6,090 2,050 1,440 1,410 9 1,760 1,420 2,570 3.250 6,620 4,670 3,760 4,670 5,890 2,010 1,430 1,470 10 1,740 1,460 2,340 3,360 11,000 4,460 3,790 4,930 5,130 1,940 1,420 1,420 11 1,670 1,680 2,170 4,340 7,640 4,260 3,940 5.360 4,480 1,890 1,410 1,420 12 1,590 1,680 2,050 9,610 11,500 3,980 4,000 5,130 4,220 1,880 1,400 1,420 13 1,780 5,260 1,990 9,150 11,600 4,240 4,140 4,360 3,980 1,850 1,410 1,570 14 2,110 8.610 1,970 5,970 13,400 4,020 4,220 3,980 3,700 1,780 1,410 1.700 15 1,820 4,630 1,910 6,300 20, 500 3,940 4,160 3,910 3,530 1,720 1,420 1,580 16 1,650 3,090 1,960 6,250 28.500 3,790 *4,120 4,100 3,360 1,910 1,420 1,590 17 1,590 2,540 3,580 5,890 18,500 3,620 4,500 4,420 3,180 2,440 1,420 1,540 18 1,530 3,010 6,280 5,820 13,900 3,450 5,800 4,690 3,050 2.640 1,440 1,490 19 1,500 4,220 5,850 5,200 12,600 3.410 5,290 4,930 3,010 Z, 140 1,430 1,450 20 1,450 3,360 7,380 4,760 11,500 3,450 5,040 4,880 3,040 1,990 1,450 1,450 21 1,450 3,020 18.500 4,480 9,640 3,760 5,520 4,780 2,800 1,890 1,520 1,490 22 1,430 *2,570 9,930 4,060 8,690 3,690 6.110 4,710 2,660 1,810 1,490 1,470 23 1,430 2,360 6,470 4,340 8,610 3,790 5,540 4,910 2,880 1,760 1,470 1,520 24 1,490 2,230 6,900 6,870 10,400 4,000 4,880 5,060 3,340 1,670 1,430 1,490 25 1,500 2,140 9,560 6,420 24,100 4,180 4,480 4,990 2,930 1,650 1,410 1,480 26 1,570 2,080 8,530 5,430 14,500 4,320 4,140 4,690 2,640 1,600 1.370 1,450 27 1,530 2,010 8,340 5,020 10,800 4,060 3,890 4,480 2,530 1,570 1,380 *1,490 28 1,470 1,930 14,800 23,100 *8,990 3,850 3,690 4,300 2,460 1,550 1,400 1,510 29 1,460 1,870 8,050 36.600 - 3,760 3,600 4,000 2,360 1,500 1,380 1,500 30 1,430 1, 800 7,510 *22, 200 4,860 3.560 3,850 2.340 1,500 1, 380 1,470 31 1 430 5, 920 14, 600 5,400 3,870 1.480 1,380 Tota: 50,830 74,200 160,360 236,880 322,220 141,380 137,460 137,600 117,200 59,910 44,640 44,010 Mean 1,640 2,473 5,173 7,641 11,510 4,561 4,582 4,439 3,907 1,933 1,440 1,467 Ac-ft 100,800 147,200 318,100 469,800 639,100 280,400 272,600 272,900 232,500 118,800 88,540 87,290 Calendar year 1957: Max 27,700 Mln 1,220 Mean 3,624 Ae-ft 2,624,000 Water year 1957-58: Max 36,600 Mln 1,350 Mean 4,183 Ac-ft 3,028,000 Peak discharge (base, 11,000 cfs). Dec. 21 (1 p.m.) 22,900 cfs (9.25 ft); Dec. 28 (1 p.m.) 16,200 cfs (7.51 ft); Jan. 12 (6 p.m.) 14,200 cfs (6.90 ft); Jan. 28 (11:30 p.,.m.) 44,900 cfs (13.68 ft); Feb. 10 (5 a.m.) 14,60O cfs (7.03 ft); Feb. 16 (5 a.m.) 32,000 cfs s (11.24 ft); Feb. 25 (1M p.m.)r\ m \ OR26,200 5>nn rtcfs fa tin(lO.Ol'ft) m #»4-^ * Discharge measurement made on this day. Note. Discharge computed from twice-daily staff-gage readings Jan. 23, 24, Mar. 5-13, July 14-16, Aug. 29 to Sept. 14. ROGUE RIVER BASIN 265

3615. Rogue River at Grants Pass, Oreg.

Location. Lat 42 025'50", long 123°19'00", in NW$ sec. 20, T. 36 S., R. 5 W., on right bank at city of Grants Pass filter plant. 0.6 mile upstream from U. S. Highway 99 bridge at Grants Pass, and at mile 98.0 (river-profile survey). Drainage area. 2,420 sq mi, approximately. Records available. October 1938 to September 1958. Prior to January 1939 monthly discharge only, published in WSP 1318. . Water-stage recorder. Datum of gage is 885.28 ft above mean sea level, datum of '929. Prior to Aug. 8, 1957, at datum 3.0 ft higher. Average discharge. 20 years, 3,553 cfs (2,572,000 acre-ft per year). Extremes. Maximum discharge during year, 63,200 cfs Jan. 29 (gage height, 21.24 ft); minimum, 676 cfs Aug. 9; minimum daily, 1,220 cfs Aug. 9, 10. 1938-58: Maximum discharge, 135,000 cfs Dec. 22, 1955 (gage height, 32.6 ft, pres ent datum), from rating curve extended above 33,000 cfs on basis of slope-area meas urement of peak flow; minimum, 444 cfs Dec. 13, 1954; minimum daily, 637 cfs Aug. 8, 1940. Flood in winter of 1861-62 reached a stage of about 42 ft, present datum (informa tion furnished by Corps of Engineers). Flood in February 1890 reached a stage of about 35 ft, present datum, and that of Feb. 21, 1927, about 31 ft, present datum, according to local resident. Remarks Records good. Many diversions from Rogue River and tributaries above station, the largest of which are at Savage Rapids Dam of Grants Pass Irrigation District, 5 miles above station. Flow regulation by dams at Savage Rapids and Raygold and slightly by Fish Lake and Emigrant Gap Reservoir. Records of chemical analyses and water temperatures for the water year 1958 are given in WSP 1574.

Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1,660 1,580 2,000 6,200 15,800 9.850 7,890 5.810 4,560 2,590 1,570 1,310 2 1.66O 1,530 1,980 6,380 11.1OO 8,630 B.56O 3,980 4,400 2.700 1,540 1,280 3 1,790 1,540 1,940 5,930 *9,470 7.85O 8,330 4.O6O 5,580 2,480 1,430 1,300 4 2,000 1,530 1,9OO 5,140, 8,140 7,15O 6,840 4,17O 6.99O 2,520 1.48O 1,510 5 2,080 1,530 *1,870 4,580 7,540 6,680 6.1OO 4,250 5,300 3,190 1,360 1,510 6 2,100 1,530 1,870 4,270 7.O60 6,490 5,700 4,400 5,OOO 2,080 1,320 1,300 7 2,190 1,53O 2,300 4,020 7,190 6,060 5,420 »4, 540 6,220 2,070 1,270 1.26O e 1,98O 1.510 3,370 3,910 7,78O 6,030 5,100 4,540 6,160 2,000 1,250 1,310 9 1,840 1,560 2,780 5.830 7,670 5,800 4,900 4,600 6.O40 1,950 1.200 1.46O 10 1.86O 1.63O 2,480 3,980 14,700 5,560 4,820 4,920 5,420 1,850 1.220 1.45O 11 1,790 1.91O 3,340 5,520 9,950 5,500 4,960 5.28O 4,680 1,850 1,250 1,440 12 1,720 1,910 2,240 11,50O 14,600 5,040 4,940 5,240 4,480 1,820 1,250 1,440 13 1,86O 4,960 2,160 15.30O 15,OOO 5,080 5,040 4.53O 4,290 1,770 1,360 1,560 14 2,310 10.100 2.O8O 8,140 16,700 4,980 5, ISO 4,130 5,940 1,760 1,380 1.950 15 2,100 5,800 2,060 8,070 28.90O 4,760 4,940 3,920 3,720 1,770 1,280 1,670 16 1,840 3,720 2,120 8,050 57.500 4,600 4,820 4,060 3,470 1,900 1,300 1,590 17 1,750 3.O3O 4,150 7,210 24,400 4,580 5,100 4,580 5,370 2,490 1,310 1,560 18 1,700 3,250 7.81O 7,010 18,200 4,21O 6,06O 4.66O 3,200 2,650 1,330 1,510 19 1,660 4,6OO 6,9OO 6,370 15,800 »4,O6O 5,800 4,960 5,180 2,220 1,350 1,460 20 1,620 3,890 9,210 5,740 15,900 4,060 5,440 4,920 5,220 1,940 1,330 1,450 21 1,630 3,420 25.400 5,38O 11,900 4,40O 5,680 4,800 5,050 1,850 1,420 1,450 22 1.62O 2,970 13,666 4,86O 1O.40O 4,560 6,240 4,760 3,890 1,750 1,420 1,450 23 1,620 2,670 8,580 5,060 10,100 4,480 6,060 4,980 5,050 1,710 1,360 1,550 24 *1,68O 2,510 7,920 9,180 11,700 4,630 5,420 5.O4O 5,450 1.6OO ,300 1,480 25 1,720 2.44O 8,800 7,920 29,400 4,900 4,940 5,140 5,180 1,600 ,300 1,540 26 1,76O 2,360 11,300 6,600 19,900 5,120 3,910 4,760 »2,91O 1,540 ,270 1,450 27 1,750 2,280 10,200 5,960 14,300 4.60O 4,400 4,540 2,750 1,550 ,300 1,450 28 1,660 2,190 19,300 27,700 11,600 4,53o 5,980 4,400 2,650 1,490 ,280 1,440 29 1,620 2,130 14,300 56,80O - 4,56O 3,910 4,06O 2.440 1,450 ,30O 1,420 30 1.59O 2,040 9,660 32,800 6,1OO 5,81O 3.85O 2,520 1.42O ,310 1,38O 31 1,590 7,300 20,200 7,480 3,850 1.590 1,320 Total 55,750 83,640 198,120 311,580 4O8.68O 171,880 164,390 159,110 121,890 59,630 4O, 760 43,510 Mean 1,798 2,788 6,391 10,040 14,600 5,545 5,476 4,487 4,063 1,934 1,315 1,450 Ae-ft 110,600 165,900 393,000 617,600 81O.60O 540, 900 525,900 275,900 241,800 118,500 80,850 86,500 Calendar year 1957: Max 37,200 Mln 1,O9O Mean 3,995 Ac-ft 2,892,OOO Water year 1957-58: Max 56, BOO Mln 1,220 Mean 4,928 Ac-ft 3,568,000 Peak discharge ,_ 2O,OOO cfs (1O. (21.24 ft)j Feb. 16 (7 a______Discharge measurement made on this day.

534540 O -60 -18 266 ROGUE RIVER BASIN

3620. Applegate River near Copper, Oreg.

Location. Lat 42°03'30", long 123 006'50", in SEir sec. 25, . 40 S., R. 4 W., on right bank a quarter of a mile downstream from French Gulch, miles downstream from Squaw Creek, and 3 miles northeast of Copper store. Drainage area. 220 sq mi. Records available. October 1938 to September 1958. Prior to January 1939 monthly discharge only, published In WSP 1318. Gage . --Water-stage recorder. Datum of gage is 1,759.66 ft above mean sea level, datum of 1929 . Average discharge. 20 years, 445 cfs (322,200 acre-ft per year). Extremes . Maximum discharge during year, 11,900 cfs Jan. 29 (gage height, 15.59 ft), from rating curve extended above 4,900 cfs on basis of slope-area measurements at gage height 16.50 and 23.47 ft; minimum, 54 cfs Sept. 27-29 (gage height, 1.21 ft). 1938-58: Maximum discharge, 20,300 cfs Dec. 21, 1955 (gage height, 23.47 ft, from floodmarks), from rating curve extended above 5,300 cfs on basis of slope-area measure ment of peak flow; minimum, 20 cfs Sept. 23-25, 1939. Remarks . Records good. About 11 cfs diverted for irrigation of 482 acres above station in Applegate River basin; Grand Applegate ditch diverts about 3.3 cfs around station on left bank. An average of about 8 cfs for Irrigation is diverted into Thompson Creek basin. Several hundred acre-feet normally stored each winter in Squaw Lake for irrigation the following summer. Revisions. WSP 1064: Drainage area.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) Oct. 1 to Feb. 15 Feb. 16 to Sept. 30 1.2 62 3.0 600 1.2 53 3.0 560 1.5 115 5.0 1,840 1.5 98 5.0 1,710 2.0 230 8.0 4,300 2.0 205 8.0 4,300 2.5 380 12.0 8,100 2.5 360 12.0 8,100 Discharge, in cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 73 113 155 700 ,970 ,800 870 1,010 815 297 96 58 2 68 107 153 728 ,650 ,590 978 1,090 978 290 95 61 3 94 102 147 640 ,420 i440 967 1,140 1,010 266 ~98102 63 4 92 96 142 565 ,270 ,300 860 1,170 855 248 61 5 123 94 140 505 ,180 ,220 780 1,310 790 230 96 62 6 149 91 140 474 .120 ,130 735 1,350 800 220 91 62 7 144 85 155 448 ,380 ,040 700 *1,280 755 215 88 60 e 123 85 *151 428 ,560 972 681 1,400 755 205 83 68 9 227 83 140 408 ,520 906 690 1,600 785 188 78 69 10 216 166 132 590 ,450 870 760 1.770 755 176 80 63 11 164 173 130 620 1,370 830 855 1,710 690 172 74 65 12 140 176 128 955 3,830 790 945 1,340 654 158 74 63 13 238 1.450 124 932 2,370 745 ,090 1,150 604 156 72 69 14 227 1,190 Hi 755 2,510 720 ,1OO 1,110 588 156 72 68 15 166 600 123 892 5,040 690 ,100 1,190 580 156 74 65 16 140 408 166 904 7.660 668 ,120 1,400 568 172 78 63 17 123 327 325 870 5,430 632 ,520 1,600 540 198 78 63 18 111 373 373 804 5,780 584 1,550 1,650 536 188 76 61 19 102 366 353 716 4,820 *568 1,330 1,610 663 160 *78 61 20 96 336 855 660 3,530 584 1,350 1,490 640 145 90 61 21 92 330 2.240 580 2,640 735 1,330 1,470 528 138 93 60 22 87 285 1,050 523 2,210 686 1,270 1,440 484 134 80 60 23 174 263 733 605 2,010 690 1,100 1,530 460 130 76 60 24 227 241 660 750 3,830 695 962 1,280 *440 126 70 60 25 *230 225 777 706 5.300 705 885 1,220 388 126 66 60 26 208 208 1,170 655 3,730 686 835 1,170 356 120 63 58 27 171 190 1,080 605 2,630 668 810 1,100 336 116 65 56 28 151 183 1,620 2,420 2,170 654 790 1,000 318 112 65 54 29 134 171 1,280 7.840 695 825 912 297 103 65 56 30 124 162 962 *3, 990 760 901 855 281 102 63 56 31 117 777 2,520 815 840 100 61 Total 4,531 8,679 16,502 34, 788 82,380 26,868 29,689 40,187 18,249 5,303 2,440 1,846 Mean 146 289 532 1,122 2,942 867 990 1,296 608 171 78.7 61.5 Ac-ft 8,990 17,210 32,730 69,000 163,400 53, 290 58,890 79,710 36,200 10,520 4,840 3,660 Calendar year 1957: Max 7,600 Min 31 Mean 418 Ac-ft 302,400 Water year 1957-58: Max 7,840 Min 54 Mean 744 Ac-ft 538,400 Peak discharge (base, 1,700 cfs).--Nov. 13 (10 p.m.) 2,040 cfs (5.28 ft); Dec. 21 (1 a.m.) 3,210 cfs (6.76 ft); Dec. 28 (12 m.) 1,820 cfs (4.97 ft); Jan. 29 (10:30 a.m.) 11,900 cfs (15.59 ft); Feb.12 (6 a.m.) 5,140 cfs (8.93 ft); Feb. 16 (12:30 a.m.) 10,800 cfs (14.55 ft); Feb. 25 (1 p.m.) 5,780 cfs (9.64 ft): Apr. 17 (8 p.m.) 1.960 cfs (5.31 ft); May 10 (11 p.m.) 2,000 efs (5.36 ft); Hay 17 (11 p.m.) 1,820 efs (5.14 ft).______* Discharge measurement made on this day. ROGUE RIVER BASIN 26?

3660. Applegate River near Applegate, Oreg.

Location. Lat 42°14'30", long 123°08'20", in NE£ sec. 26, T. 38 S., R. 4 W., on left bank 0.9 mile downstream from Keeler Creek and 2 miles southeast of Applegate. Drainage area. 480 sq mi. Records available. October 1938 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,285.33 ft above mean sea level, datum of T929. Prior to Dec. 23, 1938, staff gage at same site and datum. Average discharge. 20 years, 553 cfs (400,400 acre-ft per year). Extremes. Maximum discharge during year, 17,700 cfs Jan. 29 (gage height, 12.93 ft), from rating curve extended above 9,600 cfs as explained below; minimum, 46 cfs Aug. 31 (gage height, 0.85 ft). 1938-58: Maximum discharge, 47,600 cfs Dec. 21, 1955 (gage height, 18.00 ft), from rating curve extended above 9,600 cfs on basis of slope-area measurement of peak flow; minimum, 7 cfs Sept.18, 1945, Aug. 28, 1951. Remarks. Records good. No appreciable regulation. Many diversions for irrigation of about 4,000 acres above the station. McDonald Creek Canal diverts from McDonald Creek above station for irrigation in Bear Creek basin. Thompson Creek Irrigation Associ ation ditch diverts as much as 8 cfs for irrigation and has diverted 21 cfs for mining into Thompson Creek basin. Fowler-Keeler and Berryman ditches divert up to 4.3 and 13.6 cfs, respectively, above station for irrigation of about 800 acres below station. Revisions (water years) . WSP 1064: Drainage area. WSP 1448: 1953(M).

Rating table, water year 1957-58 (gage height, in feet, and discharge, In cubic feet per second) (Shifting-control method used Oct. 1 to Feb. 15) 0.8 41 2.0 310 6.0 4,010 1.0 66 3.0 830 8.0 7,350 1.5 155 4.0 1,630 10.0 11,500 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 103 141 195 808 2,610 2.860 1,260 1,180 1,000 518 84 50 2 96 131 188 852 2,070 2,480 1,400 1,270 1,210 518 84 56 3 123 127 178 724 1,750 2,210 1,430 1,520 1.500 265 101 58 4 119 123 172 665 1,480 1,970 1,280 1,550 1,120 252 95 53 5 155 119 170 610 1,550 1,800 1,140 1,470 984 211 103 51 6 155 113 168 570 1.240 1,670 1,090 1,560 998 198 93 55 7 210 109 180 541 1,480 1,540 1,020 *1,480 977 185 81 51 8 158 107 *182 525 1,720 1,450 984 1,590 970 180 81 58 9 239 105 165 "615505 1,650 1,540 984 1,830 1,010 165 72 65 10 281 152 160 1,580 1,270 1,070 2,030 991 158 69 59 11 213 250 152 700 1,460 1,200 1,180 2.040 914 155 63 58 12 170 195 148 987 5,940 1,140 1,270 1,600 858 145 60 66 13 246 1,230 145 1,150 5,090 1,090 1,430 1,530 795 143 62 70 14 311 1.580 143 908 2,810 1,050 1,430 1,260 774 147 65 85 15 222 700 145 1,010 6,060 1,000 1,430 1,310 748 147 60 75 16 175 510 182 1,050 *10,500 949 1,440 1,550 730 180 62 78 17 152 411 551 978 6,740 900 1,780 1,780 682 208 63 75 18 139 428 580 908 6,890 816 1.950 1,910 670 217 62 69 19 127 460 424 852 5,890 *788 1,630 1,860 788 200 *63 69 20 121 407 702 766 4,390 816 1,640 1,750 872 180 65 68 21 111 411 2.680 685 3,420 1,010 1,630 1,700 670 165 70 66 22 111 359 1,270 655 2,970 977 1,570 1,690 616 149 69 59 23 161 525 850 680 2,740 984 1,570 1,900 652 129 58 60 24 311 295 760 887 7,510 970 1,220 1,600 *634 123 52 62 25 *256 274 844 850 10,600 977 1,110 1,480 520 119 52 65 26 264 256 1,220 790 5,990 949 1,040 1,430 470 113 50 65 27 216 236 1,150 724 4,500 914 1,000 1,340 426 112 52 56 28 190 225 1,900 5,240 5,420 872 991 1,260 398 100 50 49 29 168 215 1,550 10.900 - 914 1,000 1,140 570 84 51 19 30 152 201 1,120 1,080 1,040 1,060 322 52 49 31 145 901 3! 660 1,150 j.040 ITroo 50 Total 5,600 9,991 18,955 44,843 109,630 39,116 58,809 47,050 25,469 5,204 2,094 1,845 Mean 181 333 611 1,447 3,915 1,262 1,294 1,518 782 168 67.5 61.4 Ac-ft 11,110 19,820 57,590 88,940 217,400 77,590 76,980 93,520 46,550 10,320 4,150 5,660 Calendar year 1957: Max 9,420 Mln 13 Mean 520 Ac-ft 376,400 Water year 1957-58: Max 10,900 Mln 49 Mean 950 Ac-ft 687,400 Peak discharge (base, 2,200 cfs). Nov. 13 (11 p.m.) 2,250 cfs (4.87 ft); Dec. 21 (4 a.m.) 3,450 cfs (5.85. ft); Jan.. 29 (1:30 p.m.).. 17,700, cfs (12.93. ft); Feb.. 16 (3 a.m.).. 14,000, cfs (11.11. ft); Feb. 24 (11 p.m.) 16,000 cfs (11.88 ft); Apr. 17 (10 p.m.) 2,380 cfs (4.73 ft); May 11 (1 a.m.) 2,540 efs (4.69 ft); May 23 (4 a.m.) 2,260 efs (4.62 ft). * Discharge measurement made on this day. 268 ROGUE RIVER BASIN

3685. Powell Creek near Williams, Oreg.

Location. Lat 42°16'00", long 123°17'40", near center of sec. 16, T. 38 S., R. 5 W., on left bank 0.1 mile upstream from Blodgett ditch intake and 2 miles northwest of Williams Drainage area. 8.6 sq mi, approximately. Records available. September 1946 to September 1958 (discontinued). Gage. Water-stage recorder. Altitude of gage is 1,680 ft (by barometer). Average discharge. 12 years, 16.2 cfs (11,730 acre-ft per year). Extremes. Maximum discharge during year, 622 cfs Jan. 29 (gage height, 4.68 ft); minimum, 1.0 cfs July 12-15 (gage height, 0.73 ft). 1946-58: Maximum discharge, 1,110 cfs Jan. 18, 1953 (gage height, 5.36 ft), from rating curve extended above 550 cfs on basis of slope-area measurement at gage height 4.92 ft; minimum, 0.8 cfs Sept. 25, 1955. Remarks. Records good. No regulation or diversion above station.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, In cubic feet per second) (Shifting-control method used July 15 to Sept. 30) Oct. 1 to Dec. 17 Dec. 18 to Sept. 30 0.6 1.2 1.0 0.7 0.8 1.5 22 .7 1.9 1.2 .8 1.5 2.0 55 .8 3.0 1.4 .9 2.7 2.5 106 .9 4.5 1.0 4.3 3.0 181 1.2 9.3 4.0 420 Discharge, In cubic feet per second, water year October 1957 to September 1958

Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 1.6 1.6 2.0 26 101 39 45 6.0 2.3 .9 2.1 1.7 2 270 1.6 1.9 25 71 34 58 576 3.0 .7 27T 1.6 3 2.3 1.6 1.9 22 68 30 54 5.4 4.7 .5 2.1 T76 4 1.8 1.6 1.9 19 45 28 39 5.1 372 .4 2.1 1.7 5 2.2 1.6 *1.8 15 39 26 31 5.1 2.6 .4 2.0 1.7 4.'4 6 1.6 1.9 13 34 24 29 4.9 3.0 .4 2.0 1.6 7 tt 1.6 1.9 11 34 21 27 *4.7 2.7 .3 2.0 1.6 a 1.9 1.6 1.8 10 34 19 28 4.9 3.5 .3 2.0 2.0 9 1.8 1.6 1.8 8.7 35 17 30 4.7 4.3 .2 2.0 2.0 10 1.7 3.0 1.8 13 47 16 36 4.5 3.8 .2 1.9 1.9 11 1.7 2.9 1.8 23 49 15 39 4.5 3.2 .2 1.9 2.0 12 1.8 2.6 1.8 100 129 15 39 4.3 2.7 .1 1.9 2.0 13 2.4 15 1.8 69 104 14 36 4.1 2.6 TT 1.9 2.1 14 2.6 ~8.018 1.8 44 100 13 30 3.8 2.5 .1 1.9 27T 15 1.8 1.8 47 202 13 28 3.7 2.1 .1 1.9 2.0 16 1.6 4.5 3.9 44 220 12 24 3.5 2.0 3.5 1.9 2.0 17 1.6 3.9 18 37 133 11 23 3.3 1.9 4.0 2.0 2.0 18 1.6 5.3 20 30 91 10 21 3.0 1.7 377 1.9 1.9 19 1.6 6.0 *18 25 73 *9.3 18 2.9 1.7 3.0 1.9 1.9 20 1.6 5.1 44 20 57 8.4 16 2.9 1.7 2.7 1.8 1.9

21 1.6 4.0 -60162 16 45 9.0 17 2.7 i-4 2.6 2.0 1.9 22 1.6 3.6 14 36 8.7 13 2.6 1.4 2.6 1.9 2.0 23 1.6 3.2 39 31 30 8.4 12 2.9 1.4 2.6 1.9 2.0 24 1.8 3.0 52 57 43 8.7 10 2.6 1.4 2.5 1.9 2.0 25 *2.3 2.8 71 49 104 12 9.3 2.5 1.4 2.5 1.7 1.9 *1.4 26 2.0 2.4 102 41 81 13 8.4 2.3 1'.5 2.3 1.7 1.9 27 1.8 2.3 77 33 61 14 7.8 2.2 2.3 1.9 2.0 28 1.7 2.2 115 *190 48 13 7.3 2.3 1.5 2.2 1.9 2.0 29 1.6 2.1 79 - 16 7.0 2.2 1.4 2.2 1.9 1.9 30 1.6 2.0 47 m 23 6.4 2.1 1.5 2.1 1.9 1.9 31 1.6 34 140 39 TTT 2.1 1.7 Total 59.6 116.3 969.6 1,746.7 2,114 539.5 749.2 113.4 69.5 63.8 59.8 56.8 Mean 1.92 3.88 31.3 56.3 75.5 17.4 25.0 3.66 2.32 2.06 1.93 1.89 Cfsm 0.223 0.451 3.64 6.55 8.78 2.02 2.91 0.426 0.270 0.240 0.224 0.220 In. 0.26 0.50 4.19 7.55 9.14 2.33 3.24 0.49 0.30 ' 0.28 0.26 0.25 Ac-ft 118 231 1,920 3,460 4,190 1,070 1,490 225 138 127 119 113 Calendar year 1957: Max 250 Mln 1.2 Mean 13.5 Cfsm 1.57 In. 21.28 Ac-ft 9,760 water year 1957-58: Max 378 Mln 1.1 Mean 18.2 Cfsm 2.12 In. 28.79 Ac-ft 13,200 Peak discharge (base, 150 cfs).--Dec. 20 (11:30 p.m.) 240 cfs (3.28 ft): Jan. 29 (9 a.m.) 622 cfs (4.68 ft); Feb. 12 (9:30 a.m.) 153 cfs (2.88 ft); Feb. 16 (12:30 a.m.) 355 cfs (3.79 ft). Discharge measurement made on this day. ROGUE RIVER BASIN 269

3715. Grave Creek at Pease Bridge, near Placer, Oreg.

Location. Lat 42°38'30", long 123°12'40", in SE£ sec. 6, T. 34 S., R. 4 W., on right bank half a mile downstream from Pease Bridge, 0.4 mile upstream from Boulder Creek, and 5 miles east of Placer. All records computed are for site half a mile upstream at Pease Bridge where discharge measurements are made. Drainage area. 22 sq mi, approximately, at measuring section half a mile upstream. Records available. October 1940 to September 1958. Prior to October 1945 monthly discharge only, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 2,354.2 ft above mean sea level, datum of 1929 (Bureau of Reclamation bench mark). Prior to Aug. 4, 1955, at sites about half a mile upstream at datum 29.9 ft higher. Average discharge. 13 years (1945-58), 65.1 cfs (47,130 acre-ft per year). Extremes. Maximum discharge during year, 2,760 cfs Jan. 29 (gage height, 7.78 ft), from rating curve extended above 620 cfs on basis of slope-area measurement at gage height 9.66 ft; minimum, 1.4 cfs Sept. 7. 1940-58: Maximum discharge 4,610 cfs Dec. 21, 1955 (gage height, 9.66 ft), from rating curve extended above 550 cfs on basis of slope-area measurement of peak flow; minimum, 0.3 cfs Sept. 13, 1944, Aug. 16-27, 1946, Aug. 18, 21, 1950. Remarks. Records good except those for period of no gage-height record, which are fair. No regulation. One small diversion above station. Prior to 1945, Columbia upper ditch diverted water about 2 miles above station, bypassing station.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Dec. 20 Dec. 21 to Sept. 30 1.1 3.4 2.2 71 0.8 1.8 3.5 300 1.3 7.5 2.5 121 1.7 2.O 4.0 465 1.5 14 3.0 245 3.2 2.2 59 5.0 880 24 4.O 59O 5.2 2.6 109 6.0 1.42O 48 5.0 1.O90 12 3.0 178 7.0 2,120 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 472"3.8 6.0 a!2 102 197 129 134 ^4"46 14 14 2.8 1.6 2 7'.3 5.6 all 124 168 ray 199 17 16 5.2 1.6 3 5.4 alo 112 158 99 149 41 37 IT 5.8 1.6 4 8.9 5.2 alo 94 137 88 122 38 34 9.8 572 1.6 5 12 5.2 *9.7 81 127 83 114 37 25 8.7 5.0 1.6 6 20 5.0 12 74 118 75 115 36 23 7.7 2.8 1.5 7 18 4.8 16 68 126 70 122 *34 22 7.2 2.8 1.5 8 12 4, 8 14 66 145 66 127 31 26 6.6 2.6 1.8 9 9.7 4.8 13 6T 176 62 137 29 28 6.6 2.6 2.2 10 7.5 16 13 140 268 60 184 28 24 6.3 2.4 2.2 11 6.7 22 12 193 193 61 201 29 22 6.0 2.2 2.6 12 6.4 51 11 498 400 59 206 28 20 5.5 2.2 2.4 13 15 216 11 265 27O 57 193 24 18 5.2 2.2 4.6 14 21 rre 10 166 250 53 151 21 14 5.2 2.2 574 15 13 82 10 180 1.220 51 126 20 15 5.2 2.0 2.6 16 10 5O 21 17O 87O 48 109 18 14 6.0 1.8 2.4 17 8.3 37 54 162 435 46 115 17 13 6.0 2.0 2.3 18 7.1 51 83 137 314 44 105 17 12 5.5 *2.5 2.2 19 6.4 66 217 112 268 42 88 16 12 5.0 2.2 2.2 20 5.8 50 834 96 199 45 81 16 12 4.8 2.0 2.0 21 5.4 39 540"866 83 154 *62 80 16 11 4.4 1.8 2.0 22 5.2 32 72 130 61 81 14 10 4.4 1.8 2.2 23 6.O 26 144 124 115 71 75 17 1O 4.2 1.7 2.2 24 *8.3 23 54 172 4BT 7O 68 16 1O 4.O TTf 2.0 25 13 2O 167 134 668 78 63 14 1O 3.8 1.7 2.0 26 13 17 341 114 281 85 58 14 *9.8 3.6 1.7 1.8 27 1O 15 2O6 99 195 82 54 14 9.8 3.4 1.7 1.8 28 8.6 14 36O *595 151 75 50 14 9.8 3.2 1.7 1.7 29 7.5 a!3 263 1.470 - 81 48 12 9.4 5.0 1.7 1.7 30 6.9 al2 168 493 90 46_ 11 y0 . o6 3.0 1.8 1.6 31 6.4 126 27O 1O8 15 3.O 1.8 Total 293.4 1,076.8 4,318.7 6,532 8,214 2,211 3,401 724 501.6 188.5 69.4 62.9 Mean 9.46 35.9 139 211 293 71.3 113 23.4 16.7 6.07 2.24 2.10 Cfsm O.430 1.63 6.32 9.59 13.3 3.24 5.14 1.06 O.759 0.276 O.102 O.O95 In. 0.50 1.82 7.3O 11.04 13.89 3.74 5.75 1.22 0.85 0.52 0.12 0.11 Ac-ft 582 2,140 8,57O 12,960 16,290 4,39O 6,750 1,440 995 575 158 125 Calendar year 1957: Max 1,330 Mln O.7 Mean 58.7 Cfsm 2.67 In. 36.23 Ao-ft 42,500 Water year 1957-58: Max 1,470 Mln 1.5 Mean 75.6 Cfsm 3.44 In. 46.66 Ac-ft 54,75O Peak discharge (base, 650 cfs). Dec. 20 (11 p.m.) 2.O8O cfs (6.68 ft); Jan. 12 (2 p.m.) 679 cfs (4.56 ft); Jan. 29 (10 a.m.) 2.76O cfs (7.78 ft); Feb. 15 (10 p.m.) 2.O9O cfs (6.96 ft); Feb. 24 (ll p.m.) 1,200 cfs (5.64 ft). Discharge measurement made on this day. a No gage-height record; discharge estimated on basis of recorded range in stage, weather records, and records for Elk Creek near Drew and Elk Creek near Trail. 270 ROGUE RIVER BASIN

3725. East Pork Illinois River near Takilma, Oreg.

Location. Lat 42°00'40", long 123°37'30", in SE£ sec. 10, T. 41 S., R. 8 W., on right bank 500 'ft upstream from county road bridge, a quarter of a mile upstream from Long Gulch, and 3 miles south of Takilma. Drainage area. 42.6 sq mi. Records available. April to September 1926, April 1927 to April 1932, October 1940 to September 1958. Monthly discharge only for some periods, published in WSP 1318. Rec ords prior to 1942 water year not equivalent owing to large diversions. Gage. Water-stage recorder. Datum of gage is 1,746.6 ft above mean sea level, datum of 1929 (Bureau of Reclamation bench mark]. Prior to Oct. 31, 1946, staff gages at nearby sites at different datums. Oct. 31, 1946, to May 13, 1949, staff gage at same site and datum. Average discharge. 17 years (1941-58), 192 cfs (139,000 acre-ft per year). Extremes. Maximum discharge during year, 4,820 cfs Jan. 29 (gage height, 8.48 ft); mini mum, 7.6 cfs Sept. 7, 8 (gage height, 0.94 ft). 1-926-32, 1940-58: Maximum discharge, 8,230 cfs Dec. 22, 1955 (gage height, 10.05 ft); minimum observed, 5.2 cfs Sept. 24-29, 1944. Remarks. Records good. No regulation. Occasional small diversions above station during summer months. Esterly Upper Canal and Osgood Canal diverted water around station prior to 1942. Revisions (water years). WSP 1184: 1948. WSP 1288: 1951(P). WSP 1398: 1946, 1947(M), 1949.

Rating table, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) 0.9 6.5 2.3 107 6.0 1,600 1.0 9.2 3.0 227 7.0 2,650 1.4 4.0 490 8.0 4,030 1.8 55 5.0 910 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 16 31 53 306 553 363 360 231 105 41 15 9.9 2 16 28 50 439 448 308 427 254 133 41 14 9.5 3 23 27 48 350 409 274 352 245 132 34 14 9.2 4 40 26 46 277 357 238 272 242 110 31 14 8.7 5 75 23 44 223 370 223 234 265 102 29 13 8.4 6 175 21 *52 193 365 202 214 *254 102 27 13 8.1 7 110 20 75 174 546 187 196 238 102 24 13 12~7.8 8 80 20 64 166 560 176 193 258 105 25 12 9 167 19 58 171 560 164 204 298 103 24 12 13 10 146 111 53 430 497 155 256 511 101 23 12 13 11 108 171 50 442 454 149 308 272 95 22 12 13 12 86 178 48 835 1,540 142 381 206 86 22 12 12 13 159 1,530 45 643 885 133 433 173 80 22 12 19 14 142 928 44 400 1,540 126 403 162 77 22 12 15 15 99 424 12 706 2.900 122 365 183 75 22 *11 13 16 74 263 92 570 2,320 115 357 225 73 22 11 12 17 57 210 329 504 1,500 111 592 260 68 27 12 11 18 56 357 386 395 2,020 *110 595 254 64 26 12 11 19 42 329 *599 308 1,360 TIT 421 219 64 22 12 11 20 36 247 981 272 806 160 403 204 59 20 13 11 21 32 191 1.840 229 570 329 392 208 53 20 11 10 22 29 150 651 200 478 272 355 198 49 19 11 11 23 39 124 433 332 463 236 277 195 46 18 11 11 24 49 118 564 504 2,110 225 223 167 44 16 10 11 25 58 92 688 454 1,680 272 189 155 42 15 10 10 26 *62 81 778 352 840 260 171 149 41 15 9.9 9.9 27 55 74 1,320 329 574 225 164 142 *39 15 10 9.9 28 49 68 1,680 1,910 436 212 164 126 36 16 10 9.5 29 42 61 792 *5.,480 - 240 173 108 3.3 16 10 9.2 30 37 56 481 1,400 284 200 103 34 16 11 *9.2 31 34 342 806 357 105 15 11 Total 2,193 5,978 12,729 17,800 27,141 6,481 9,274 6,410 2,253 707 365.9 328.3 Mean 70.7 199 411 574 969 209 309 207 75.1 22.8 11.8 10.9 Ac-ft 4,350 11,860 25,250 35 , 310 53,830 12,850 18,390 12,710 4,470 1,400 726 651 Calendar year 1957: Max 3,020 Min 7.6 Mean 186 Ac-ft 134,600 Water year 1957-58: Max 3,480 Min 7.8 Mean 251 Ac-ft 1'81,800 Peak discharge (base, 2,500 cfs).--Dec. 20 (11:30 p.m.) 2,780 cfs (7.11 ft); Jan. 29 (10 a.m.) 4,820 cfs (8.48 ft); Feb. 15 (10:30 p.m.) 4,250 cfs (8.14 ft); Feb. 18 (2 p.m.) 2,810 cfs (7.15 ft); Feb. 24 (6:50 p.m.) 5,100 efs (7.35 ft).______* Discharge measurement made on this day. ROGUE RIVER BASIN 271

3750. Sucker Creek near Holland, Oreg.

Location Lat 42°09'00", long 123°27' 50", in NE£ sec. 25, T. 39 S., R. 7 W., on right bank 1 mile downstream from Grayback Creek and 4 miles northeast of Holland. Drainage area. 76 sq mi, approximately. Records available. April to August 1940, September 1941 to September 1958. Prior to October 1945 monthly discharge only, published in WSP 1318. Gage. Water-stage recorder. Datum of gage is 1,777.22 ft above mean sea level (Bureau of Reclamation bench mark). Prior to Sept. 16, 1947, staff gages at several sites within half a mile of present site at various datums. Sept. 16, 1947, to Sept. 19, 1952, staff gage at site 280 ft upstream at datum 0.62 ft higher. Average discharge.--17 years (1941-58), 216 cfs (156,400 acre-ft per year). Extremes. Maximum discharge during year, 4,280 cfs Feb. 15 (gage height, 6.65 ft); min- Imum, 30 cfs Sept. 29, 30 (gage height, 1.28 ft). 1940-58: Maximum discharge, 7,150 cfs Dec. 22, 1955 (gage height, 7.95 ft); mini mum observed, 17 cfs Sept. 29 to Oct. 3, 1941. Remarks. Records good. No regulation. Grayback Canal diverts water from Grayback Creek above station for domestic use and irrigation; most of return flow from this canal enters creek above station. Revisions (water years) . WSP 1318; 1946(M).

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Nov. 13 Nov. 14 to Sept. 30 1.4 35 2.5 247 1.2 3.0 455 1.7 65 3.0 435 1.6 61 4.0 1,060 2.0 116 3.5 690 2.0 128 5.0 1,970 2.5 260 6.0 3,250 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 40 46 80 370 889 749 525 366 323 126 50 34 2 45 44 79 428 743 654 616 390 446 llS 50 34 3 54 43 74 370 654 582 555 384 475 104 49 34 4 57 42 73 323 588 525 455 410 370 99 48 34 5 68 41 71 288 550 485 398 446 366 94 47 33 6 109 41 *74 264 520 442 330 *450 338 90 47 33 7 75 41 87 245 72T 414 342 446 320 85 46 33 8 62 41 77 236 755 390 330 4B5 312 84 45 38 9 84 110"40 71 236 695 366 342 560 316 80 44 38 10 69 69 378 632 350 382 616 302 77 43 38 11 62 100 68 370 610 330 419 582 270 74 42 40 12 60 91 66 713 1,220 316 455 485 251 71 42 38 13 102 56"3661 65 665 1,400 298 490 424 236 70 42 45 14 100 64 490 1,200 295 460 406 224 70 42 39 15 68 278 65 616 2,690 281 442 428 221 68 *40 38 16 57 192 115 577 2.960 270 446 505 215 77 40 36 17 52 169 224 545 2,000 257 599 572 206 110 42 36 18 49 239 *281 475 2,300 *245 604 588 195 97 42 35 19 47 215 260 410 1,690 284"242 535 555 200 74 41 34 20 45 190 399 374 1,260 520 535 179 69 45 34 21 43 169 1,140 326 999 370 520 535 167 65 40 34 22 42 146 550 302 850 346 495 535 157 64 39 34 23 56 132 374 326 785 346 432 560 150 62 38 35 24 61 124 402 378 2,530 342 394 475 143 61 38 33 25 71 114 520 382 2,310 378 362 455 135 59 37 33 26 *65 106 701 354 1,420 394 338 437 128 58 37 33 27 57 99 699 323 1,080 374 320 419 *124 57 36 32 28 54 95 1,080 *1,210 882 350 312 390 116 53 36 31 29 50 87 767 *5.040 - 378 320 346 112 53 36 *31 30 48 84 540 1,700 410 338 323 108 52 36 31 31 47 419 1,180 465 316 §1 35 Total 1,899 4,283 9,554 17,894 34,937 11,928 13,076 14,434 7,105 2,370 1,295 1,051 Mean 61.3 143 308 577 1,248 385 436 466 237 76.5 41.8 35.0 Cfsm 0.807 1.88 4.05 7.59 16.4 5.07 5.74 6.13 3.12 1.01 0.550 0.461 In. 0.93 2.10 4.68 8.76 17.10 5.84 6.40 7.06 3.48 1.16 0.63 0.51 Ac-ft 3,770 8,500 18,950 35,490 69,300 23,660 25,940 28,630 14,090 4,700 2,570 2,080 Calendar year 1957: Max 2,930 Min 28 Mean 213 Cfsm 2.E 0 In. 37.98 Ac-ft 153,900 Water year 1957-58: Max 3,040 Min 31 Mean 328 Cfsm 4.32 In. 58.65 Ac-ft 237,700 peak discharge (base, 1,400 cfs). Dec. 21 (12:30 a.m.) 1,400 cfs (4.43 ft); Jan. 29 (10 a.m.) 4,220 cfs (6.62 ft); Feb. 15 (12 p.m.) 4,280 cfs (6.65 ft); Feb. 24 (9:30 p.m.) 3,760 cfs (6.34ft). Discharge measurement made on this day. 272 ROGUE RIVER BASIN

3755. West Fork Illinois River below Rock Creek, near O'Brien, Oreg,

Location. Lat 42°02'20", long 123°44'50", in SW&SE£ sec. 34, T. 40 S., R. 9 W., on left bank 900 ft downstream from Rock Creek and 3 miles southwest of O'Brien. Drainage area. 42.4 sq mi. Records available. September 1954 to September 1958. Gage. Water-stage recorder. Datum of gage is 1,516.14 ft above mean sea level, datum of T929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 6,300 cfs Jan. 29 (gage height, 12.20 ft); minimum, 3.5 cfs Sept. 7. 1954-58: Maximum discharge, 12,100 cfs Dec. 22, 1955 (gage height, 14.79 ft); min imum, 3.2 cfs Sept. 23, 1957. During flood of Oct. 28, 1950, flow of 14,200 cfs occurred at former station down stream where the drainage area is 15 percent larger. The flood of Dec. 22, 1955, was slightly lower. Remarks. Records good. Slight regulation by log pond' upstream.

Rating tables, water year 1957-58 (gage height, In feet, and discharge, in cubic feet per second) Oct. 1 to Nov. 12 Nov. 13 to Sept. 3O 1.6 13 3.0 110 1.1 2.8 4.0 272 2.0 28 4.0 271 1.3 5.2 5.0 490 2.5 61 5.0 485 1.6 11 6.0 780 2.0 25 8.0 1,750 2.5 59 10.0 3,450 3.0 117 11.0 4,600 Discharge, In cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 15 40 61 372 780 410 816 82 50 11 6.0 5.9 2 T5 35 57 644 562 342 1.250 77 54 17 5.8 5.8 3 18 32 53 492 455 297 928 71 35 16 5.7 5.8 4 42 30 51 370 378 258 698 68 31 15 5.8 4.2 5 111 28 49_ 299 5W 256 562 64 30 14 6.5 5.9 6 400 26 81 247 512 216 448 *61 55 15 5.8 5.8 7 1ST 25 222 214 458 200 380 58 33 15 5.5 3-4 8 83 24 169 195 545 198 356 55 37 12 5.2 47? 9 74 176-23 130 892 197 370 53 IB"40 12 5.1 6.5 10 66 104 T??ili 920 200 408 51 12 5.1 6.3 11 65 308 92 1,040 888 195 418 52 32 12 5.1 8.6 12 86 347 80 1,960 2,440 186 418 49 30 11 4.9 7.2 13 341 2.580 72 1,120 1,320 169 376 45 28 10 4.9 14 213 1,190 65 608 1,940 158 520 44 26 10 5.4 ft 15 125 536 66 1,190 5.560 150 280 42 25 10 *4.9 10 16 88 336 248 695 2,540 145 254 40 23 10 4.5 8.8 17 67 291 1,120 492 1,520 134 594 39 22 15 4.6 8.4 18 54 530 1,240 374 1,690 *127 574 57 21 15 5.2 7.8 19 45 415 *1,840 310 1,220 120 282 36 22 12 4.6 7.S 20 39 306 2,400 318 710 13T 236 35 23 10 4.8 7.0 21 36 234 5,010 318 515 310 206 34 21 9.7 4.8 6.8 22 32 187 1,160 272 440 263 182 34 19 9.5 4.2 7.4 23 35 157 1,000 425 415 245 158 37 17 8.8 4.1 7.4 24 42 134 1,500 716 1,660 287 143 37 18 8.0 3.9 7.4 25 116 117 1,280 650 2,020 585 130 34 17 8.4 4.2 7.8 *120 26 100 1,250 458 1,060 478 117 30 17 7.8 £4- 7.2 27 88 90 1,450 392 683 354 108 50 *18 7.4 37S 6.8 2S 71 80 2,160 2,460 512 291 99 31 17 7.4 3.8 7.6 29 59 72 995 *4.210 - 534 92 30 16-16 6.6 3.7 7.4 30 51 66 590 2,160 624 87. 28 6.6 3.9 *6.6 31 44 430 1,380 1,220 5T B.5 3.9 Total 2,808 8,515 23,025 25,347 51,143 9,062 10,890 1,415 773 538.7 149.2 217.4 Mean 90.6 284 743 818 1,112 292 363 45.6 25.8 10.9 4.81 7.25 Ao-ft 5,570 16,890 45,670 50,280 61,770 17,970 21,600 2,810 1,530 672 296 431 Calendar year 1957; Max 3,020 Mln 3.3 Mean 249 Ao-ft 180,600 Water year 1957-58; Max 4,210 Mln 3.5 Mean 311 Ao-ft 225,500 ROGUE RIVER BASIN 273

3770. Illinois River at Kerby, Oreg.

Location. Lat 42°11'50", long 123°39'30", in NW£ sec. 9, T. 39 S., R. 8 W., on right bank at Pinch Bridge, half a mile west of Kerby. Drainage area. 364 sq mi. Records available. March 1926 to September 1958. Monthly discharge only March 1926, published in WSP 1318. Gage. Staff gage read once or twice daily. Datum of age is 1,234.00 ft above mean sea level , datum of 1929, supplementary adjustment of 1 47. Prior to May 9, 1928, staff gage at site half a mile upstream at different da turns. May 9, 1928, to Nov. 2, 1934, staff gage at present site at different daturas. Nov. 3, 1934, to Sept. 30, 1950, water-stage recorder at site 1 mile downstream at datum 18.76 ft lower. Average discharge. 32 years, 1,213 cfs (878,200 acre-ft per year). Extremes . Maximum discharge during year, 41,800 cfs Jan. 29 (gage height, 11.4 ft, from floodmark) ; minimum observed, 36 cfs Aug. 31, Sept. 1-3, 6, 7. 1926-58: Maximum discharge, 56,800 cfs Dec. 22, 1955 (gage height, 14.4 ft, from floodmark), from rating curve extended above 9,600 cfs on basis of slope-area measure ment at gage height, 13.7 ft; minimum, 13 cfs Sept. 10-15, 1934. Remarks . Records good except those for periods of shifting control, which are fair. No regulation. Diversions for irrigation of 5,500 acres above station. Some diversions for mining during winter months. Revisions (water years) . WSP 864: 1936-37. WSP 1184: 1927(M). 1942(M), 1943, 1946(M) , IMS"! WSF ISIF- Drainage area. WSP 1398: 1927-29, 1930(M), 1931-32, 1933-34(M) .

Rating tables, water year 1957-58, except periods of shifting control (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 15 Feb. 16- to Sept. 30 0.9 62 3.0 1,580 33 2.0 400 1.2 127 4.0 3,520 63 2.5 870 1.5 231 5.0 6,250 109 3.0 1,520 2.0 510 7.0 14,400 220 4.0 3,520 2.5 960 10.0 32,000 Note. Same as preceding table above 4.0 ft. Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 76 208 489 1,870 5,950 3,290 4,980 1,160 620 186 76 36 2 72 182 454 3,810 4,350 2,880 6,560 1,160 914 186 67 3T 3 W 160 416 2,760 *3,640 2,400 5,430 1,130 947 177 63 36 4 124 145 386 1,940 3,060 2,200 3,990 1,090 S5o 170 60 37 5 649 139 374 1,570 3,450 1,980 3,200 1,110 700 162 60 37 6 2,290 127 *374 1,270 3,450 1,810 2,700 *1,100 690 147 56 36 7 1,390 119 842 1,090 3,760 1,670 2,300 1,050 690 140 53 36 8 725 111 797 982 4,320 1,670 2,160 1,080 670 131 49 37 9 689 306"94 635 950 5,230 1,580 2,120 1,150 690 124 46 37 10 689 496 2,756" 5,660 1,500 2,360 1.260 660 115 45 37 11 534 1,790 369 4,890 5,020 1,480 2,610 1,200 620 104 45 38 12 434 2,100 310 9,260 13,400 1,420 2,700 1,030 590 104 43 43 13 2,080 11,400 262 6,440 7,970 1,340 2,830 936 561 104 43 43 14 1,350 7,830 240 3,760 11,800 1,220 2,500 870 516 104 42 53 15 880 4,140 235 6,940 23,100 1,220 2,240 850 456 104 *41 49 16 626 2,550 588 4,460 20,000 1,150 2,140 881 432 104 41 46 17 468 1,840 4,200 3,290 11,200 1,090 3,060 992 416 106 41 46 18 358 3,360 5,800 2,450 12,000 1,030 3,270 1,080 372 109 42 49 19 285 2,930 6,690 1,870 9,800 992 2,420 1,020 372 115 41 49 20 235 2,190 8,900 1,700 6,220 *i,53o 2,220 947 358 128 40 46 21 208 1,760 18,400 1,550 4,700 2,160 2,060 925 351 121 40 43 22 188 1,430 5,710 1,320 3,810 1,880 1,980 925 300 115 38 41 23 171 1,200 4,680 1,510 3,570 1,640 1,690 1,020 276 104 38 38 24 266 1,040 6,250 3,660 11,500 1,780 1,450 870 255 99 38 40 25 392 910 6,620 3,590 14,900 3,430 1,300 850 240 94 38 40 26 *698 797 7,210 2,490 7,860 2,720 1,190 840 220 84 38 45 27 496 725 6,640 2,130 5,430 2,120 1,110 830 211 89 38 43 28 386 635 11,900 *13,000 4,170 1,900 1,100 830 203 80 37 43 29 330 566 6,250 *29.900 - 1,880 1.060 730 186 76 37 *43 30 275 518 4,540 19,400 3,780 1,090 660 177 tTofa 37 43 31 240 2,590 9,170 7,280 630 76 36_ Total 17,690 51,302 113,647 151,772 219,320 63,522 75,820 30,206 14,513 3,636 1,409 1,246 Mean 571 1,710 3,666 4,896 7,833 2,049 2,527 974 484 117 45.5 41.5 Ac-ft 35,090 101 , 800 325,400 301,000 435,000 126,000 150,400 59,910 28,790 7,210 2,790 2,470 Calendar year 1957: Max 27,700 Mln 27 Mean 1,488 Ac-ft 1,077,000 Water year 1957-58: Max 29,900 Mln 36 Mean 2,039 Ac-ft 1,476,000 * Discharge measurement made on this day. Note. Shifting-control method used Oct. 6 to Dec. 20, Sept. 24-30. 274 ROGUE RIVER BASIN

3780. Illinois River near Selma, Oreg.

Location. Lat 42°22'45", long 123°48'40", in SWt; sec. 6, T. 37 S., R. 9 W., on right bank 200 ft upstream from Panther Creek, 0.3 mile downstream from Briggs Creek, and 12 miles northwest of Selma. Records include flow of Panther Creek. Drainage area. 665 sq mi, includes that of Panther Creek. Records available. October 1956 to September 1958. Gage. Water-stage recorder. Datum of gage is 829.18 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Extremes. Maximum discharge during year, 70,100 cfs Jan. 29 (gage height, 22.3 ft, from floodmarks); minimum daily, 100 cfs Aug. 31 to Sept. 3, Sept. 6, 7. 1956-58: Maximum discharge, that of Jan. 29, 1958: minimum, 73 cfs Sept. 25, 1957. Maximum discharge known, 97,000 cfs Dec. 22, 1955 (gage height, 25.64 ft, from floodmarks), from slope-area measurement of peak flow. Remarks. Records fair except those for periods of no gage-height record, which are poor. No regulation. Many diversions above station for irrigation, mining, and log-pond operation.

Rating tables, water year 1957-58 (gage height, in feet, and discharge, in cubic feet per second) Oct. 1 to Feb. 15 Feb. 16 to Sept. 3O 3.5 286 9.0 6,500 2.4 1OO 6.O 1,800 4.0 435 12.0 15,400 3.0 198 7.0 3,050 5.0 915 17.0 36,800 3.5 3ZO 9.O 6,800 6.0 1,700 20.0 54,000 4.0 480 12.0 15,400 7.0 2,840 5.0 960 17.0 36,800 Discharge, in cubic feet per second, water year October 1957 to September 1958 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 300 531 783 4,520 11,000 6,000 10,000 1,970 900 383 190 loo 2 290 495 740 6,600 9,000 5,000 12,000 1.980 1,100 410 180 100 3 340 459 700 5,280 7,500 4,400 i i , ooo 1,920 1.500 392 170 100 4 500 432 665 4,100 7,000 4,000 9,000 1,800 1,230 374 160 101 5 1,300 414 635 3,420 7,500 3,600 7,000 1,810 1,060 350 150 110 6 3.500 397 630 2,920 7,500 3,200 6,000 1,800 990 335 150 100 7 2,500 382 *910 2,570 8,000 3,000 5,000 1,700 950 320 150 100 8 1,800 373 1,040 2,400 8,500 3,000 4,800 1,700 950 290 140 110 9 1,500 364 871 2.380 10,000 2,800 4,800 1,700 950 278 140 110 10 1,500 702 783 7,690 11,000 2,600 5,270 1,800 950 260 130 110 11 1,200 2,370 735 9,090 10,000 2,600 5,750 1,700 900 238 130 120 12 1,700 2,120 695 19,200 25,000 *2,530 6,110 1,500 850 236 130 130 13 3,000 12,400 650 12,000 17,000 2,400 6,150 1,400 800 236 130 150 14 2,200 10,900 625 9,000 22,000 2,200 5,570 1,300 750 233 120 160 15 1,420 5,800 600 11,900 37,000 2,200 4,970 *1,200 750 227 120 150 16 1,040 3,590 1,420 7,750 *33,800 2,100 4,570 1,300 700 230 120 140 17 854 2,810 7,560 6,500 22,000 2,000 5,710 1,300 650 240 120 140 18 740 3,920 9,780 5,000 23,000 1,900 5,870 1,400 650 250 120 150 19 630 3,790 12,000 3,800 19,000 1,900 4,470 1,300 600 260 120 147 20 560 2,940 18,700 3,400 14,000 1,900 4,030 1,300 600 280 120 136 21 519 2,380 27,700 3,200 11,000 4,000 3,770 1,200 550 270 114 127 22 483 1,970 13^400 3,000 10,000 3,600 3,520 1,200 550 260 *114 125 23 495 1,680 9,990 *3, 600 9,500 3,200 3,080 1,300 500 240 110 125 24 610 1,460 12,100 7,500 21,000 3,400 2,740 1,200 480 220 110 125 25 860 1,290 11,400 7,250 27,000 6,500 2,460 1,200 *448 210 110 124 26 1,140 1,150 12,200 5,500 14,000 5,500 2,230 1,200 431 200 110 120 27 *951 1,050 11,200 5,000 10,000 4,400 2,080 1,100 410 210 110 120 28 816 957 17,900 20,000 8,000 3,800 1,980 1,100 407 200 110 120 29 725 888 10,600 54,000 - 3,800 1.910 1,000 386 190 110 114 30 650 822 6,780 31,000 7,500 1 930 JS77 190 110 *113 31 578 5,060 *16,800 13,000 900 190 100. Total 34,701 68,836 198,852 286,370 420,300 118,030 153,770 44,230 22,169 8,202 3,998 3,677 Mean 1,119 2,295 6,415 9,238 15,010 3,807 5,126 1,427 739 265 129 123 Ac-ft 68,830 136,500 394,400 568,000 833,700 234,100 305,000 87,730 43,970 16,270 7,930 7,290 Calendar year 1957: Max 33,900 Min 74 Mean 2,445 Ac-ft 1,770,000 Water year 1957-58: Max 54,000 Min 100 Mean 3,735 Ac-ft 2,704,000 - Discharge measurement made on this day. Note.--No gage-height record Oct. 1-13, Jan. 13, 14, 17-24, 27-30, Feb. 1-15, Feb. 17 totc Mar. 11, Mar. 13 to Apr. 9, May 8-14, May 16 to June 3, June 7-24, July 16 to Aug. 20, Aug. 23 to S Sept. 5, 7-18; discharge estimated on basis of 1 discharge_ measurement, recorded range in stage, and records for station at Kerby.rby. ROGUE RIVER BASIN 275

Reservoirs in Rogue River basin, Oreg.

Fish Lake.--Lat 42°23' , long 122°21', in SEijSEij sec. 4, T. 37 S., R. 4 E. , at outlet of reservoir on North Pork Little Butte Creek, 14 miles east of Lake Creek Post Office. Drainage area, 17 sq mi, approximately. Records available, October 1915 to September 1958. Staff gage read daily except Oct. 25 to May 14 when gage read 1 or 2 times each month. Datum of gage is 185.4 ft below mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Oct. 1, 1921, staff gage on former gate tower at datum 4,799.0 ft higher. Maximum contents observed during year, 8,190 acre-ft May 31 to June 9 (elevation, 4,827.6 ft); minimum observed, 1,810 acre-ft Oct. 1 (elevation, 4,809.4 ft). Maximum contents observed during period 1915-58, that of May 31 to June 9, 1958; no usable contents at times. Reservoir is formed by rock-faced earth dam, completed in fall of 1915; storage began in November 1915. Capacity, 8,020 acre-ft between elevations 4,799.0 (outlet tunnel) and 4,827.2 ft (spillway crest, rebuilt in 1956). Since August 1923 water is diverted during summer from Pourmile Lake in Klamath River basin through Cascade Canal into Pish Lake. Stored water used for irrigation near Eagle Point and Medford. Emigrant Gap Reservoir. Lat 42°09'40", long 122°36'20", in SE£ sec. 20, T. 39 S., R. 2 E., at Emigrant Gap Dam of Talent Irrigation District on Emigrant Creek, 2 miles downstream from Sampson Creek, and 6 miles southeast of Ashland. Drainage area, 64 sq mi, approx imately. Records available, December 1924 to September 1958. Staff gage read 1 to 16 times each month. Datum of gage is at mean sea level (levels by Talent Irrigation .District). Maximum contents observed during year, 7,830 acre-ft Feb. 24 (elevation, 2,174.0 ft); minimum observed, 15 acre-ft Sept. 30 (elevation, 2,083.8 ft). Maximum contents observed during period 1924-58, 8,490 acre-ft Feb. 20, 1927 (elevation, 2,175.2 ft), from revised original capacity table, sedimentation being assumed negligible at that time; maximum elevation, 2,176.0 ft Jan. 27, 1954; no usable contents at times. Capacity table used is based on survey made by Bureau of Reclamation in 1951, which indicated that a net amount of 366 acre-ft of silt had accumulated in reservoir from 1924 to 1951. Reservoir is formed by concrete-arch dam, completed in 1924 by Talent Irrigation District; storage began in December 1924. Capacity, 7,720 acre-ft between elevations 2,075.0 and 2,173.5 ft (crest of spillway). No dead storage. Water is used for irriga tion of lands near Talent. , , Revisions (water years). WSP 834; 1936. WSP 1064: 1945. WSP1348: 1927(M), 1951-53. Month-end elevation and total contents, water year October 1957 to September 1956 Elevation Contents Change In Elevation Contents Change In (feet) (acre-feet) contents (feet) (acre-feet) contents Date (acre-feet) (acre-feet) Elsh Lake Emigrant Gap Reservoirs 4,809.3 1,790 2,O9O.O 63 a3,250 +1,460 2,112.2 534 +471 a4,2OO +950 2,129.5 1,470 +936 a5,000 +800 a5,350 +3,880 Calendar year 1957.... - - -900 - - +420 a5,500 +500 2,172.5 7,480 +2,130 a6,200 +700 37,800 +320 a6,8oo +600 a7,790 -10 a7,300 +500 a7,600 -190 4,827.6 8,190 +890 2,169.6 6,840 -760 4,827.5 8,150 -40 a7,600 +760 4,822.1 6,000 -2,150 2,156.8 4,480 -3,120 4,813.8 3,130 -2,870 al , 800 -2,680 Sept. 30...... 4,814.95 3,490 +360 2,083.8 15 -1,780 Water year 1957-58... . - - +1 , 700 - - -48 a Interpolated. Note. Time of gage reading not known. 276 DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES

As the number of streams on which streamflow information is likely to be desired far exceeds the number of stream-gaging stations feasible to operate at one time, the Geolog ical Survey collects limited streamflow data at sites other than stream-gaging stations. When limited streamflow data are collected on a systematic basis over a period of years for use in hydrologic analyses, the site at which the data are collected is called a partial- record station. Data collected at these partial-record stations are usable in low-flow or flood-flow analyses, depending on the type of data collected. In addition, discharge measurements are made at other sites not included in the partial-record program. These measurements are generally made in times of drought or flood to give better areal coverage to those events. Those measurements and others collected for some special reason are called measurements at miscellaneous sites. Records collected at partial-record stations are generally presented in two tables. However, no records at low-flow partial-record stations are available for the 1958 water year. A table of annual maximum discharge at crest-stage stations is given first, followed by a table of measurements made at miscellaneous sites for both low flow and high flow.

Crest-stage partial-record stations

The following table contains annual maximum discharges for crest-stage stations. A crest-stage gage is a device which will register the peak stage occurring between inspec tions of the gage. A stage-discharge relation for each gage is developed from discharge measurements made by indirect measurements of peak flow or by current meter. The date of the maximum discharge is not always certain but is usually determined by comparison with nearby continuous-record stations, weather records, or local inquiry. Only the maximum discharge for each water year is given. Information on some lower floods may have been obtained but is not published herein. The years given in the period of record represent water years for which the annual maximum has been determined. The maximum discharge for each year since the crest-stage gage was established is given. The peak discharge for some years may have been published in a previous report as a measurement of discharge. Figures given herein supersede all previous figures of peak discharge for the floods listed.

Maximum discharge during water year Annual maximum Drainage Period Station Station name Location area of Gage Dis No. (sq mi) record Date height charge (feet) (cfs)

walla walla River basin, wash. 159 Spring Creek tribu-|Ni sec. 9, T.7 N. , R.37 E., at 1.94 1956-58 3-23-56 1.15 7.6 tary near Walla Spring Creek road about 200 ft 5-17-57 4.12 80.9 walla. above mouth and 7 miles north 2-12-58 2.85 45.4 east of Walla Walla. 166 Hatley Creek near On line between sees. 2 and 11, 4.12 1955-58 2- 9-55 1.60 21.3 Dayton. T.9 N. , R.39 E., at North Pork 12-22-55 3.55 88.5 Touchet River road 5 miles 2-24-57 2.70 50.8 southeast of Dayton. 4-17-58 3.43 86.1 166.5 Davis Hollow Creek SE-J sec. 32, T.10.N., R.39 E. , at 3.01 1956-58 5- 9-56 _ 305 near Dayton. county road 200 ft above mouth 12-10-56 .86 6 and 2 miles southeast of 4-17-58 6.22 215 Dayton city center. 172 Badger Hollow SE£ sec. 20, T.ll N. , R.36 E., at 4.16 1955-58 2- 8-55 3.11 75.3 Creek near Clyde. county road 5.8 miles east of 2-22-56 7.68 327 Clyde and 8 miles north of 2-25-57 2.79 61.4 Prescott. 6-26-58 1.39 17.9 175 Touehet River near NEt sec. 15, T.7 N. , R.33 E., 100 736 1942*, 12-22-55 10.98 7,230 Touehet . ft below site of old county 1944*, 2-26-57 7.24 2,770 road bridge, £ mile above 1946-55*, 4-20-58 7; 00 '2,550 diversion dam, and 3^ miles 1956-58 north of Touchet. .80 1955-58 1955 (a) 191 Walla Walla River SW£ sec. 25, T.7 N., R.31 E., at 2-21-56 3.6 tributary near U. S. Highway 410, 1.5 miles .71 Wallula. southeast of Wallula. 6-26-58 .90 5.7

Umatilla River basin, Oreg. 1-14-58 18.36 106 208 Spring Creek at St SEj sec. 24, T.2 N., R.33 E., at 2.74 1958 Andrews Mission. culvert 500 ft east of St. Andrews School and 8 miles east of Pendleton. 1-14-58 216 Umatilla River E-J sec. 4, T.2 N., R.32 E., at 4.30 1958 12.82 42 tributary near culvert on U. S. Highway 395, Pendleton. 1.5 miles northwest of Pendleton. 4-21-58 223 Little McKay Creek On line between sees. 1 and 12, b5.0 1958 11.48 71 near Pilot Rock. T.I S., R.32 E., at culvert above McKay Reservoir, 4 miles northeast of Pilot Rock. Dead Canyon basin, wash. Nj of line between sees. 14 and 1.08 1955-58 1955 (a) 343.2 Dead Canyon tribu 1956 tary near 15, T.5 N. , R.23 E., 6 miles : north of Alderdale. 1957 Alderdale. 1958 a * Operated as a continuous-record gaging station. < Less than. a No evidence of any flow. b Approximately. DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES 277

Maximum discharge during water year Continued Annual maximum Drainage Period Station Station name Location area of Gage Dis No. (sq mi) record Date height charge (feet) (cfs) Willow Creek basin, Oreg. 343.8 North Pork Willow E£ sec. 29, T.3 g., R. 28 E., at 10.0 1958 2-16-58 16.89 43 Creek near culvert on Willow Creek road, Heppner. 12 miles southeast of Heppner. John Day River basin, Oreg. 480.2 Grass Valley Canyon NW£ sec. 35, T.2 S. , R.16 E., at b8.3 1958 2-16-58 15.94 146 near Grass ValJqi; culvert on county road, 1 mile northeast of Grass Valley. peschutes River basin, Oreg. 818 Ahalt Creek near KEj sec. 20, T.13 S. , R.20 E. , at e2,28 1956, 5- 8-56 9.42 clll Mitchell. culvert on Walton Lake road, 14 1958 1958 (*) (t) miles southwest of Mitchell. 952 Mud Spring Creek Ei sec. 27, T.9 S., R.14 E. , at b7.4 1958 6- 7-58 16.65 347 tributary near culvert on U. S. Highway 97, Madras. 11 miles north of Madras. Rook Creek Rivep basin, Wash. 1252 Rook Creek near HWi seo.14, T.3 N. , R.9 E. , at 4.04 1949-58 2-17-49 7.48 428 Willard, Wash. county road 4.4 miles north of 2-24-50 6.20 323 U. S. Highway 830 and 1 mile 2- 9-51 4.09 175 south of Willard. 2- 4-52 4.98 237 1- 9-53 5.28 256 12- 9-53 4.19 182 2- 8-55 3.70 151 11-26-55 5.28 257 3- 7-57 2.95 107 12-25-57 3.77 155 Unnamed tributaries to Columbia River 1263 Columbia River SE£ sec. 27, T.3 N., R.8 E. , at el. 08 1950-58 2-24-50 4.05 74.0 tributary at U. S. Highway 830, 0.3 mile 2-11-51 2.29 32.3 Home Valley, * east of Home Valley Post 2- 4-52 2.63 39.3 Wash. Office. 1- 9-53 3.44 58.2 12- 9-53 2.65 40.0 2- 8-55 (d) <19 12-21-55 5.04 75.4 3- 7-57 3.04 45.1 12-25-57 2.41 31.5 1287.4 Columbia River HWj sec. 7, T.2 N. , R.8 E. , at e3.18 1952-58 12-18-51 7.57 68 tributary at culvert on U. S. Highway 30, 1-18-53 8.94 125 Cascade Locks, 0.8 mile east of Cascade Locks. 12-19-53 7.62 70 Oreg. 12-31-54 7.08 52 12-21-55 10.18 186 3- 7-57 8.12 90 4-21-58 7.60 69 Sandy River basin, Oreg. 1312 Lady Creek near HWj sec. 16., T.3 S., R.8 E. , at 3.82 1953-58 1-18-53 12.65 331 Rhododendron . water-supply dam 4 miles east 11-22-53 f!2.24 221 of Rhododendron. 6- 9-55 11.52 148 11-26-55 12.44 293 12-11-56 13.23 439 4-2O-58 12.20, 252 Washougal River basin, Wash. 1432 Canyon Creek near SEi sec. 4, T.I N. , R.5 E. , at 2.74 1949-58 2-17-49 6.20 281 Washougal . State Highway 8B, 2.4 miles 2-24-50 5.10 210 from U. S. Highway 830 and 8 12-23-50 2.88 90.6 miles east of Washougal. 2- 4-52 3.73 134 1-18-53 4.75 188 12- 9-53 3.05 100 12-31-54 3.05 99 11-26-55 4.11 153 3- 7-57 5.45 233 12- 6-57 3.19 106 1440 i Little Washougal SEj seo.ol, T.2 N. , R.4 E. , 20 23.8 1952-55*. 11-26-55 7.09 1,260 River near ft below road bridge, 1 mile 1956-58 3- 7-57 7.03 1,240 Washougal . above mouth, and 2i miles 4-20-58 6.37 905 north of Washougal. Groenveld Creek basin, Wash. 1443 Shanghai Creek SWjNEi sec. 33, T.3 N. , R.3 E. , 2.14 1950-58 1- 6-50 3.03 50.5 near Hookinson. at county road 3.3 miles 12-23-50 3.45 64.2 southeast of Hockinson. 10-23-51 4.53 99.0 1-18-53 4.99 112 1-22-54 4.53 99.0 2- 7-55 3.45 64.2 1- 5-56 5.45 124 2-26-57 3.02 50.5 12-25-57 2.60 39.0 t Discharge not determined * Operated as a continuous-record gaging station < Less than. b Approximately. c Includes estimated by-pass flow. d Peak stage did not reach bottom of gage. e Revised. f Affected by backwater. DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES

Maximum discharge during water year Continued Annual maximum Drainage Period Station Station name Location area of Gage Dis No. (sq mi) record Date height charge (feet) (ofs)

Groenveld Creek basin, Waah. Continued 1446 Groenveld Creek NE£ sec. 8, T.I N. , R.3 E., at 0.51 1958 4-20-58 2.08 (t) near Camas. private road 15 ft east of county road, 0.4 mile above mouth, and % mile northwest of Camas, Wash, city limits. Wlllamette River basin, Oreg. 1483 North and South SW£ sec. 18, T.20 S., R.2 E., at 2.84 1953-55 1-18-53 15.01 272 Creek near culvert on State Highway 58, K> 11-23-53 14.38 225 Oakridge . miles northwest of Oakridge. 12-31-54 13.18 (t) 1487 Pern (Wren) Creek WiNWi sec. 3, T.20 S., R.I E. , at e.44 1953-58 1-18-53 W <20 near Lowell. mouth, on State Highway 58, 6 11-23-53 5.17 22 miles southeast of Lowell. 12-30-54 (d) <20 12-21-55 5.45 30 12-11-56 (a) <20 2-15-58 5.14 22 1539 Prather Creek near NEjSWi sec. 30, T.21 S., R.I E., 5.69 1953-58 1-18-53 5.54 237 Disston. at dam 0.2 mile northwest of 11-22-53 5.73 286 Rujada ranger station, i mile 12-30-54 4.89 92 above mouth, and 8 miles north 12-21-55 5.65 264 east of Disston. 12-11-56 5.59 250 2-15-58 5.58 247 1578 Willamette River SWj sec. 11, T.18 S., R.3 W., at 2.60 1952-56 12- 3-51 7.69 167 tributary near culvert on U. S. Highway 99, 2 1-17-53 f9.02 (t) Springfield. miles south of Springfield. 1-27-54 7.79 175 4-12-55 6.24 82 12-21-55 f9.77 (t) 1582. 5 Hackleman Creek NWj- sec. 32, T.13 S., R.6 E., at e.21 1953-58 12- 7-52 3.72 47 near Upper Soda. culvert on U. S. Highway 20, 11-22-53 4.04 56 1.3 miles upstream from Indian 6-11-55 2.77 22 Creek, and 7 miles east of 1-15-56 4.23 62 Upper Soda. 12-11-56 5.38 102 2-15-58 3.21 33 1583 Echo Creek near SE£ sec. 27, T.13 S., R.6 E., at .85 1953-54 12- 7-52 13.14 73 Upper Soda. culvert on U. S. Highway 20, 1954 f 13.40 (t) 3.3 miles west of Clear Lake Junction, 10 miles east of Upper Soda, and 30 miles east of Cascade ranger station. 1587.5 Carmen Creek near NE£ sec. 12, T.15 S., R.6 E. , at Spring 1953 1953 12.5 206 MoKenzie Bridge. culvert on Clear Lake road, 9 miles north of Junction with U. S. Highway 126 and 10 miles northeast of McKenzie Bridge. 1589 Anderson Creek SW£ sec. 13, T.15 S., R.6 E., at b9.7 1953-54, 1953 13.90 234 near MoKenzie culvert on Clear' Lake road, 7 1957-58 1954 f!2.60 (t) Bridge . miles north of Junction with 12-11-56 f!2.58 (t) U. S. Highway 126 and 7 miles 2-15-58 f!2.42 (t) northeast of McKenzie Bridge. 1612 Lookout Creek NE£ sec. 31, T.15 S., R.5 E., at .34 1953-58 1-18-53 2.80 47 tributary No. 3 weir on Lookout Creek road, 11-22-53 2.53 35 near Blue River. 0.1 mile above mouth and 6 12-30-54 2.62 39 miles northeast of town of 1-15-56 2.57 36 Blue River. 12-11-56 2.73 44 12-20-57 2.90 52 1616 Lookout Creek NWi sec. 6, T.16 S., R.5 E., at .41 1954-58 11-22-53 2.80 44 tributary near weir on Lookout Creek road, 12-30-54 2.63 37 Blue River. 5.4 miles northeast of town of 12-21-55 2.73 41 Blue River. 12-11-56 3.35 75 12-20-57 3.29 62 1697 Bear Creek near SE£ sec. 24, T.16 S., R.6 W. , at 5.19 1957-58 3- 7-57 18.63 360 Cheshire. culvert on State Highway 36, 12-20-57 18.75 390 4.2 miles southwest of Cheshire. 1705 Rook Creek near HBi sec. 29, T.12 S., R.6 W. , at 14.6 1946-524i 1-18-53 4.58 1,000 Philomath. dam 250 ft above bridge on 1953-58 11-23-53 4.42 938 State Highway 34, 0.2 miles 12-30-54 3.73 662 above mouth, and 4.5 miles 12-21-55 6.82 2,190 southwest of Philomath. 2-24-57 3.81 694 1-12-58 3.55 590 1723 Butte Creek near NWjNEi sec. 5, T.13 S., R.2 W. , 5.06 1955-58 11-17-54 14.11 143 Plainview. at culvert on county road, 2.9 12-21-55 16.23 294 miles southeast of Plainview, 3- 7-57 14.46 171 2-16-58 15.74 262 1741 Cox Creek at SWi sec. 4, T.ll S., R.3 W. , at 15.2 1953-58 1-20-53 11.22 329 Albany. dam at Waverly Lake outlet, 1-28-54 12.23 716 at Albany. 12-30-54 10.98 251 12-21-55 12.34 765 3- 7-57 11.22 329 12-20-57 11.66 486 t Discharge not determined. < Less than. b Approximately. d Peak stage did not reach bottom of gage. e Revised. f Affected by backwater. DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES 279

Maximum discharge during water year Continued Annual maximum Drainage Period Station Station name Location area of Gage Dis No. (sq mi) record Date height charge (feet) (cfs)

Wlllamette River basin, Oreg. Continued 1788 Wind Creek near NE£ sec. 31, T.9 S., R.6 E. , at el. 03 1954-58 12-20-53 11.30 111 Detroit. culvert on Breitenbush River 12-30-54 9.56 43 road, 2 miles northeast of 1-15-56 11.17 107 Detroit. 12-11-56 11.86 127 11-13-57 10.18 71 1817 North Santiam SWj sec. 25, T.9 S. , R.3 E. , at el. 97 1952-58 12-22-51 16.25 47 River tributary culvert on State Highway 22, 1- 9-53 17.44 86 near Gates. 1.3 miles east of Gates. 11-23-53 16.96 71 2- 8-55 17.29 81 12-21-55 17.28 81 3- 7-57 15.83 32 12-20-57 16.53 56 1849 Sheek Creek SWjSEi sec. 36, T. 133., R.2 E. , .94 1953-58 12- 7-52 13.28 47 (unnamed tribu at culvert on U.S. Highway 20, 12- 4-53 14.90 72 tary) near 0.1 mile above mouth, 0.1 mile 12-30-54 12.67 33 Cascadia. east of Cascade ranger station, 12-21-55 13.21 44 and 1.7 miles west of Cascadia. 12-11-56 13.54 51 12-20-57 17.08 105 1902 Waymire (Mitchell) NW£ sec. 22, T.8 S., R.6 W., at e3.46 1954-58 2-12-54 14.49 304 Creek near Falls culvert on county road, 0.8 12-30-54 10.42 80 City. mile above mouth and 1 mile 12-21-55 16.33 522 east of Falls City. 2-26-57 12.64 189 1-12-58 12.56 185 1907 Soap Creek tribu SWjNEi sec. 18, T.10 S., R. 4 W. , .57 1953-58 2-17-53 4.10 63 tary near Suver. at culvert on U. S. Highway 1-27-54 3.79 51 99 W., 1.2 miles south of Polk 12-30-54 3.04 26 County line and 3 miles south 12-21-55 4.53 80 of Suver. 3- 7-57 2.85 21 1-12-58 3.51 41 1921 Glenn (Glen) Creek SE^NWj sec. 20, T.7 S., R.3 Vi, 2.72 1952-58 12- 4-51 gll.96 64 near Salem. at culvert on Glenn Creek 1-20-53 g!3.28 156 road, 1.5 miles northwest 1-27-54 g!2.81 121 of Salem. 2- 8-55 gll.25 24 12-21-55 g!4.26 172 3- 7-57 16.55 1-12-58 17.22 f?i 1922 Glenn (Glen) Creek S|SE£ sec. 8, T.7 S., R.3 W., at 4.83 1952-58 12- 3-51 13.39 102 tributary near culvert on county road, at 1-20-53 16.53 238 Salem. Brush College 0.8 mile up 1-27-54 15.65 162 stream from mouth and 2.5 miles 4-12-55 12.21 53 northwest of Salem. 1- 4-56 16.40 c!90 3- 7-57 14.17 126 1-12-58 15.35 153 1928 South Yamhill SW£ sec. 18, T.6 S., R.6 W. , at el. 81 1954-58 2-12-54 11.48 179 River tributary culvert on State Highway 22, 2- 7-55 8.38 52 near- Willamina. 2 miles above mouth and 3 12-21-55 21.00 420 miles southeast of Willamina 2-26-57 10.42 142 (revised). 1-12-58 9.80 118 1973 Panther Creek near SW-J- sec. 18, T.3 S., R.5 W. , at e3.19 1953-58 1-19-53 13.55 184 Carlton. Carlton water-supply dam 5.5 2-12-54 13.77 212 miles above Beaver Creek and 12-30-54 13.03 113 9 miles west of Carlton. 12-21-55 14.72 492 3- 7-57 13.55 208 12-20-57 13.70 232 1997 Bull Creek near NE^ sec. 6, T.5 S., R.3 E. , at 4.16 1957-58 3- 7-57 14.09 119 Colton. culvert on State Highway 211, 12-20-57 13.96 136 2.2 miles west of Colton. 2038 Beaver Creek near SW£ sec. 10, T.2 N. , R.5 W. , at e4.70 1952-58 12- 4-51 16.20 182 Glenwood. culvert 1.7 miles northwest of 1- 8-53 15.97 170 Glenwood and 2.5 miles above 12- 9-53 17.04 229 mouth. 2- 8-55 14.64 106 1- 4-56 17.17 265 3- 7-57 15.29 155 1-12-58 15.58 160 2041 Bateman Creek near SE£ sec. 26, T.2 N. , R.5 W. , at el. 34 1952-58 12- 4-51 11.11 40 Glenwood. culvert on State Highway 6, 1- 8-53 12.44 77 1.5 miles south of Glenwood 2-12-54 13.88 115 and 3.5 miles northwest of 2- 8-55 10.67 31 Gales Creek. 12-21-55 16.0 145 3- 7-57 11.32 44 12-20-57 11.05 39 2099 Dubois Creek at NW£ sec. 29, T.3 S., R.4 E., at 2.52 1957-58 3- 7-57 17.20 78 Estacada. culvert 0.5 mile southwest of 4-20-58 17.49 93 Estacada. 2108 Rock Creek near SW£ sec. 32, T.I S., R.3 E., at 2.25 1957-58 3- 7-57 54.42 153 Boring. culvert on county road, 4.5 1-12-58 52.87 91 miles west of Boring. t Discharge not determined. c Includes estimated by-pass flow. e Revised. g Site and datum then in use. DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES

Maximum discharue during: water year Continued Annual maximum Drainage Period Station Station name Location area of Cage Dis No. (sq ml) record Date height charge (feet) (cfs) Wlllamette River basin, Oreg. Continued 2118 Wlllamette River SE^SEi- sec. 13, T.I N. , R.I W. , a1 1.46 1952-58 12- 3-51 g37.86 76 tributary at culvert at Intersection of N.W. 1-20-53 g9.13 80 Portland. Balboa and Culebra Streets In 1-22-54 - 223 Portland, 0.3 mile above 4-12-55 11.95 73 mouth. 12-21-55 13.33 306 3- 7-57 12.86 200 2-15-58 11.79 59 Lake River basin, Wa£ h. 2119 Burntbrldge Creek SW£ sec. 14, T.2 N. , R.I E. , at 22.2 1949-58 2-10-49 4.22 99.0 at Vancouver. P Street 0.7 mile east of U. S. 2-24-50 3.66 77.0 Highway 99, at north city 12-23-50 3.86 83.0 limits of Vancouver. 2- 4-52 3.10 56.0 1-18-53 3.72 78.0 1-22-54 3.94 88.0 12-30-54 1.67 16.7 12-11-55 6.02 176 2-27-57 3.07 55 12- 6-57 2.83 46.0 Lewis River basin, Wash. 2183 Dog Creek at SEj sec. 33, T.7 N. , R.4 E. , at 2.31 1956, 12-11-55 6.72 420 Cougar. state highway 0.6 mile west of 1958 12-26-57 4.68 240 Cougar. 2227 East Pork Lewis SE£ sec. 5, T.4 N., R.I E., at .53 1950-58 12-28-49 2.96 50.6 River tributary U. S. Highway 99, 3.7 miles 12-23-50 2.43 36.2 near Woodland. southeast of Woodland. 1952 (a) <20 1-22-53 1.61 14.1 1-22-54 2.86 44.8 12-30-54 3.04 55.8 12-11-55 6.54 192 2-26-57 2.22 31.5 12-19-57 1.80 20.9 Unnamed tributaries to Columbia River 2238 Columbia River SW£ sec. 19, T.7 N. , R.I W. , at 1.06 1950-58 12-28-49 2.84 55.0 tributary at old U. S. Highway 99, at 12-23-50 2.98 58.5 Carrols, Wash. Carrol s . 2- 3-52 2.88 54.8 1-18-53 2.10 34.0 12- 9-53 3.68 80.4 2- 8-55 2.72 50.6 12-11-55 4.51 112 12- 9-56 1.93 29 12-19-57 2.82 53

Cowlltz River basin, Wash. 2311 Mill Creek at SEj sec. 8, T.12 N. , R.7 E., at 2.95 1950-58 2-24-50 2.22 89.4 Randle. old State Highway 5 at Randle. 2-10-51 2.16 82.7 3-25-52 2.11 79.2 1-2S-53 2.16 82.7 12- 9-53 2.51 105 2- 8-55 1.91 69.0 12-11-55 2.50 105 12- 9-56 1.92 69.9 2-24-58 2.12 81.0 2320 Nlggerhead Creek SEj sec. 20, T.ll N. , R.8 E. , 1 66.3 1951-53*, 12- 9-53 4.80 2,500 near Randle. mile above mouth and 8f miles 1954-58 11-19-54 4.10 1,730 southeast of Randle. 12-22-55 5.06 2,820 2-26-57 5.45 5,340 2-25-58 4.89 2,610 2353 Tilton River near Nj sec. 32, T.14 N. , R.5 E., at .79 1950-58 11-26-49 3.38 99.0 Mineral ( form State Highway 5, 4.1 miles 2-10-51 3.16 88.8 erly Tilton south of Mineral. 4-27-52 2.83 76.4 River tributary). 1-31-53 2.59 67.0 12- 9-53 4.40 145 2- 8-55 2.79 74.3 12-11-55 5.78 142 12- 9-56 4.28 134 12-25-57 1.95 45.7 2391 North Pork Lacamas SE£ sec. 6, T.12 N., R.I E. , at .36 1950-58 2-24-50 4.80 29.2 Creek near Ethel. county road 1.5 miles north 1- 1-51 2.92 19.4 east of Ethel. 2- 4-52 2.49 16.4 1-23-53 2.16 14.1 12- 9-53 5.79 33.2 2- 8-55 3.59 23.3 12-11-55 6.12 34.3 12- 9-56 2.78 18.6 2-13-58 2.34 15.6 2397 Olequa Creek SEi sec. 5, T.ll N. , R.2 W. , at .38 1950-58 11-26-49 3.39 37.0 tributary near county road 2.4 miles south 2- 9-51 2.79 28.5 Wlnlock. of Wlnlock. 2- 3-52 1.76 14.0 1-18-53 1.86 15.1 12- 9-53 2.25 19.8 2- 8-55 1.82 15.1 1- 5-56 3.23 37.1 12- 9-57 2.50 25.0 12-25-57 1.69 15.3 * Operated as a continuous-record gaging station. c Less than. d Peak stage did not reach bottom of gage. g site ana datum then In use. DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES 281

Maximum discharge during water year Continued Annual maximum Drainage Period Station Station name Location area of Gage Dis No. (sq ml) record Date height charge (feet) (cfs)

Cowlltz River basin Continued 2426 Toutle River NWi sec. 30, T.10 N. , R.I W. , at 0.64 1950-58 11-26-49 3.54 58 tributary near Tower road 4 miles northeast 2-11-51 2.32 28.0 Castle Rock. of Castle Rock. 2- 4-52 2.48 31.7 1-23-53 1.95 20.4 12- 9-53 3.67 62.2 2- 8-55 2.85 41.5 12-22-55 3.71 63.9 12- 9-56 3.89 68.2 12-25-57 1.95 20.4 Skamokawa River basin, Wash. 2479 Risk Creek near NWi sec. 23, T.9 N. , R.6 W. , at 1.13 1949-58 2-17-49 5.12 94.0 Skamokawa. old U. S. Highway 830, 3.0 2-24-50 5.21 103 miles southeast of Skamokawa. 12-22-50 5.06 102 2- 4-52 3.37 55.0 1-22-53 5.59 C125 12- 9-53 3.98 72.0 12-30-54 4.30 77.7 12-11-55 5.32 102 Do ....do...... At private driveway 1,000 ft 12- 9-56 5.4 131 west of above site. 1-14-58 h40 Necanlcum River basin, Oreg. 2985 North Pork Necanl- NW£ sec. 21, T.5 N. , R.9 W. , at 5.70 1952-54 1-30-52 6.45 358 eum River near dam above fish hatchery on 1-22-53 f6.26 - Seaside. U. S. Highway 26, 8 miles 12- 9-53 7.04 656 southeast of Seaside. 2990 South Pork NW£ sec. 29, T.5 N. , R.9 W. , at 7.99 1952-58 12- 4-52 7.65 1,780 Necanlcum River dam on Hollenback road, 1 mile 1-22-54 g8.52 2,320 near Seaside. above mouth and 8 miles south 2-. 8-55 7.13 J.310 east of Seaside. 12-21-55 8.85 3,020 2-26-57 7.77 1,880 12-19-57 7.66 1,780

Asbury Creek basin, Oreg. 2995 Asbury Creek near SW£ sec. 19, T.4 N. , R.10 W., at el. 97 1952-58 2- 4-52 7.69 211 Cannon Beach. culvert on U. S. Highway 101, 1-22-53 8.68 235 at Arch Cape, just above mouth, 1-22-54 8.20 193 and 6 miles south of Cannon 12-30-54 7.86 166 Beach. 12-21-55 8.97 260 12-11-56 8.14 188 2-15-58 7.64 151 Patterson Creek basin, Oreg. 3014 Patterson Creek SE£ sec. 34, T.I N. , R.10 W. , at el. 87 1952-58 3-17-52 10.72 55 (unnamed tribu culvert on U. S. Highway 101, 1-18-53 12.55 166 tary) at Bay at north end of Bay City, 0.3 1-22-54 11.82 117 .City. mile upstream from mouth. 12-30-54 11.57 102 11-26-55 13.08 207 3- 7-57 11.27 84 4-20-58 11.05 74

Salmon River basin, Oreg. 3037 Alder Brook near SE-J sec. 25, T.6 S., R.10 W. , at 1.09 1954-58 12-19-53 11.65 82 Rose Lodge. culvert on State Highway 18, 12-30-54 11.97 101 d. 1 mile sbove mouth and 1.5 12-21-55 11.61 80 miles northeast of Rose Lodge. 12-11-56 11.09 58 4-20-58 11.81 91 Rocky Creek basin, Oreg. 3060.1 Rocky Creek near NEi sec. 19, T.9 S., R.ll W., at 5.36 1954-57 12-19-53 23.16 Depoe Bay. culvert on U. S. Highway 101, 12-30-54 25.12 2 miles south of Depoe Bay. 3- 4-56 22.24 28381 12-11-56 21.31 226

Alsea River basin, Oreg. 3066 South Pork Welss SW£ sec. 33, T.13 S., R.ll W. , at eO.33 1953-58 1-17-53 6.92 30 Creek near water-supply dam 0.1 mile 1-28-54 6.36 14 Waldport. above mouth and 3.5 miles 12-30-54 6.44 16 southeast of Waldport. 12-21-55 6.81 26 10-25-56 6.13 9.6 1-12-58 6.15 10 Sluslaw River basin, Oreg. 3075.5 Deadwood Creek SEi sec. 18, T.16 S., R.8 W. , at 0.75 1957-58 2-26-57 16.89 32 tributary near culvert on county road, 0.5 12-20-57 17.59 53 Alpha. miles north of Alpha. 3076.1 Sluslaw River NW£ sec. 27, T.17 S., R.10 W. , at .42 1958 12-20-57 7.08 29 tributary near culvert on State Highway 36, Ralnrock. 1.3 miles west of Ralnrock. t Discharge not determined. c Includes estimated by-pass flow. e Revised. f Affected by backwater. g Site and datum then In use. h Estimated.

534540 O -60 -19 282 DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES

Maximum discharge during water year Continued Annual maximum Station Station name Location area of Gage Dis No. (sq ml) record Date height charge (feet) (cfs)

Umpqua River basin, Oreg. 3089 Canyon Creek at SEj sec. 34, T.30 S. R.5 W. , at 36.9 1951, 10-29-50 - 3,700 Canyonvllle. dam near U. S. Highway 99, 1953-58 1-18-53 26.3 2,420 0.5 mile south of Canyonvllle 1-28-54 26.99 2,760 and 2.5 miles above mouth. 12-31-54 21.36 595 12-21-55 28.66 3,810 2-26-57 25.80 2,170 1-29-58 25.91 2,220 3109 West Fork Frozen SE^SW£ sec. 32, T.28 S. , R.4 W., e3.16 1955-58 12-30-54 16.31 80 Creek near Myrtle at culvert on Frozen Creek 12-26-55 19.64 305 Creek. road, 6.2 miles northeast of 12-11-56 17.99 194 Myrtle Creek. 3-12-57 17.99 194 1-29-58 18.58 232 3121 Parrott Creek NE£ sec. 25, T.27 S., R.6 W., at e2.42 1952-58 12-23-51 12.32 141 (South Umpqua culvert on Starmer Street, 1-18-53 12.94 168 River tributary) between Masters and Booth Ll-22-53 12.41 144 at Roseburg. Streets In Roseburg, 0.5 mile 12-30-54 (a) <31 above mouth. 12-21-55 15.24 290 2-26-57 11.89 120 12-20-57 14.13 228 3123 Marks Creek (South NE£SW£ sec. 3, T.27 S., R.6 W. , el. 23 1952-58 2- 3-52 12.49 96 Umpqua River at culvert on Garden Valley 1-18-53 13.37 140 tributary) near road, 1 mile above mouth and 11-22-53 12.74 108 Roseburg. 3.8 miles northwest of 12-30-54 11.31 46 Roseburg. 12-21-55 15.08 235 2-26-57 13.33 138 12-20-57 13.83 164 3171 Susan Creek near NW£ sec. 23, T.26 S., R.2 W., at 4.86 1957-58 12-11-56 16.20 707 Idleyld. culvert on county road, In 12-20-57 13.82 360 Susan Creek State Park, 6 miles east of Idleyld. 3178 Cavltt Creek near NEJ- sec. 14, T. 27 S., R. 3 W. , 56.9 1956-57 12-26-55 7.5 4,930 Peel. 1.5 miles above mouth and 12-11-56 9.54 10,600 1.5 miles south of Peel. 3186 North Umpqua River SE£ sec. 9, T.26 S., R.4 W. , at e.75 1956-58 12-26-55 14.26 188 tributary near culvert on county road, 3.7 3- 6-57 11.48 61 Glide. miles northwest of Glide. 12-20-57 11.39 57 3206 Calapooya Creek SE£ sec. 32, T.24 S., R.5 W. , at 1.28 1957-58 12-11-56 12.74 tributary near culvert on U. S. Highway 99, 2-15-58 11.82 HI Oakland. 1 mile northwest of Oakland. 3219 Yoncalla Creek SWi sec. 27. T. 22 S., R. 5 W., 26.0 1956-58 12-26-55 14.48 1,480 near Yoncalla. 1.5 miles above mouth and 2-26-57 13.08 1,190 , 1.8 miles north of Yoncalla. 2-15-58 14.21 1,430 3224 Pass Creek near NW£SW£ sec. 34, T. 21 S., R. 5 W., 61.9 1956-58 12-26-55 13.57 5,410 Drain . 0.2 mile below Sand Creek, 2-26-57 9.82 2,590 3 miles northeast of Drain. 2-15-58 13.96 5,860 3227 Bear Creek near NW£ sec. 25, T.22 S., R.6 W., at 5.13 1952-58 11-29-51 14.43 247 Drain. Drain water-supply dam, 0.8 1-18-53 14.96 381 mile downstream from Lost Cabin 1-27-54 15.07 412 Creek, 3.5 miles southwest of 12-30-54 14.07 174 Drain. 12-21-55 fl5.59 452 12-11-56 14.57 281 2-15-58 ne.69 430 Tenmlle Creek basin, Oreg. 3233 Eel Creek at NE^NEi sec. 13, T. 23 S., R. 13 bll 1958 2-25-58 3.17 183 Lakeside. W. , at Lakeside Junction, three quarters of a mile west of Lakeside. Coqullle River basin, Oreg. 3266 Gettys Creek near SW£ sec. 35, T.29 S., R.13 W., at 1.45 1953-58 1-18-53 14.34 176 Myrtle Point. culvert on county road, ^mlle 1-16-54 13.42 154 above mouth and 5.5 miles 12-30-54 12.35 128 southwest of Myrtle Point. 12-21-55 16.33 223 12-11-56 10.95 91 2-15-58 13.86 165

Gelger Creek basin, Oreg. 3271 Gelger Cre'3k near SEi sec. 32, T.28 S., R.14 W., at 1.36 1954-58 11-22-53 22.10 101 Bandon. culvert on county road, 1 mile 12-30-54 20.89 83 above mouth and 1.8 miles 12-21-55 24.10 131 southeast of Bandon. 10-25-56 21.90 98 2-15-58 23.94 129 t Discharge not determined. < Less than. b Approximately. d Peak stage did not reach bottom of gage. e- Revised. f Affected by backwater. DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES 283

Maximum discharge during water year Continued Annual maximum Drainage Period Station Station name Location area of Gage Dis No. (sq ml) record Date height charge (feet) (cfs)

Brush Creek basin, Oreg. 3274 Dry Run Creek NW£ sec. 25, T.33 S., R.15 W., at eO.86 1954-58 11-22-53 17.81 151 (Brush Creek culvert In Humbug State Park, 12-30-54 17.82 151 tributary) near just above mouth, 5 miles 1- 4-56 16.90 133 Port Or ford. southeast of Port Or ford. 12-11-56 14.60 73 2-1 5-58 18.14 158

Rogue River basin, Oreg 3389 Murderer Creek SW-t sec. 10, T.35 S., R.I W. , at 1.78 1954 11-23-53 5.58 182 near Eagle Point. dam on State Highway 62, 5 miles north of Eagle Point. 3530 West Pork Ashland NWj sec. 28, T.39 S., R.I E., at elO.5 1925-32*. 1-23-54 13.95 c86 Creek near small dam above Ashland water- 1954-58 10- 4-54 13.36 c39 Ashland . supply reservoir, 2.5 miles 12-21-53 14.85 C208 south of Ashland. 12-11-56 13.82 c73 1-30-58 14.39 c!42 3535 East Pork Ashland NW£ sec. 28, T.39 S., R.I E., at e8.14 1925-32*. 1-23-54 4.04 c75 Creek near small dam above Ashland water- 1954-58 10- 4-44 3.78 c48 Ashland. supply reservoir, 2.5 miles 12-21-55 5.22 C292 south of Ashland. 10-30-56 3.92 c62 2-24-58 4.53 c!49 3586 Griffin Creek near MEi sec. 15, T.38 S., R.2 H., at 5.41 1954-56 1-27-54 13.92 117 Medford. culvert on Griffin Creek road, 12- -54 (

Harris Creek basin, Oreg. 3788 Harris Creek near NEj sec. 36, T.40 S., R.14 W., at el. 05 1954-58 11-22-53 22.67 297 Brook ings. culvert on U. S. Highway 101, 12-30-54 25.98 439 1.9 miles northwest of 12-21-55 f22.51 (t) Brook ings . 12-11-56 21.78 251 2-15-58 f22.55 (t) Ransom Creek basin, Oreg. 3789 Ransom (Eiler) NE£ sec.l, T.41 S. , R.14 W., at 0.74 1953-58 1-17-53 24.8 300 Creek near culvert on U. S. Highway 101, 11-22-53 22U7 172 Brook ings . Just above mouth and 1.2 miles 12-30-54 24.46 280 northwest of Brookings. 12-21-55 23.06 211 12-11-56 26.52 (t) 2-15-58 25.41 110 t Discharge not determined. * Operated as a continuous-record gaging station. c Includes estimated bypass flow. d Peak stage did not reach bottom of gage. e Revised. f Affected by backwater. 284 DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES

Measurements at miscellaneous sites

Measurements of streamflow at points other than gaging stations or partial-record stations are given In the following table. Those that are measurements of base flow are designated by an asterisk (*); measurements of peak flow by a dagger (t). measurements made at miscellaneous sites during water year 1958 Drainage Measured Measurements Stream Tributary to Locat Ion area previously Date Discharge (sq ml) (water (cfs) years) Walla Walla River basin, Wash. Touchet Walla Walla NE£ sec. 15, T.7 N., R.33 E., 736 1941-54*, 9-20-58 18.2 River. River. at former gaging station 1955 3^ miles north of Touchet, John Day River basin, Oreg. Beech Creek. John Day River, Sec. 28, T.13 S., R.30 E. , 113 1956 7- 2-58 10.0 at county road bridge 0.2 mile south of Junction of Highways 395 and 26, In Mount vernon. Canyon Creek. ....do...... NW£ sec. 25, T.14 S., 100 1905-6, 7- 2-58 *44.2 R.31 E., 4 miles south 1908-9, of Canyon City. 1914-15, 1936, 1951-53, 1955-57 South Pork ....do...... In NEi sec. 24, T.13 S., 590 1948,1951, 7- 3-58 120 John Day R.26 E., at former gaging 1952-56*. River . station 3 miles south of 1957 Dayvllle. ....do...... At mouth, 7 miles northwest 292 1934, 7 3 58 76.0 of Dayvllle. 1948-57 Cable Creek. Camas Creek. . . At mouth, 5 miles northeast a39 1942-49, 7- 2s-58 * 56.0 of Uklah. 1951-53, 1955-57

Wlllamette River basin, Oreg. Wlllamette Columbia In SE£ sec. 34, T.17 S., a2,030 1912-13*, 10-10-57 3,150 River . River . R.3 w. , at former gaging 1919-57* station at Springfield.

McKenzle River basin, Oreg. Gate creek. . McKenzle In sec. 28, T.16 S., R.2 E., 47.6 1946-50, 10-15-57 56.0 River. at former gaging station 1951-57* at Vlda. McKenzle Wlllamette SE^NEi sec. 10, T.17 S. , 1,009 1954,1956 6-19-58 *973 River. River. R.I E., at Baxter mlnt- 7- 1-58 *695

Trask River basin, Oreg. Pacific In NW£ sec. 31, T.I S., 143 1931-55*, 10-14-57 149 River. Ocean. R.8 W., at former gaging 1956-57 1-14-58 3,400 station 6 miles east of 2-18-58 2,540 5-27-58 *268 Tlllamook. 7- 8-58 *122 8- 7-58 *72.6

Umpqua River basin, Oreg. South Umpqua Umpqua River SK-J sec. 12, T.30 S., R.6 V.. - 8-15-58 125 River. 15 miles northeast of Riddle. Cavltt Creek. Little River. NE£ sec. 14, T.27 S., R.3 Wv 56.9 1955-56 11- 5-57 *10.3 1.5 miles above mouth, 12-13-57. *63.4 1.5 miles south of Peel, 12-18-57 381 and 8.8 miles southeast 2-13-58 440 of Glide. 4- 3-58 277 5-20-58 *34.9 7- 9-58 *25.7 8-28-58 *7.25 Yoncalla Elk Creek. .... SWi sec. 27, T.22 S., R.5 W., 26.0 1955-57 11- 6-57 .23 Creek. 1.5 miles above mouth, 12-16-57 *27.5 1.8 miles north of 1-31-58 389 Yoncalla, and 3.3 miles 2-17-58 488 southeast of Drain. 3-19-58 *28.3 4-30-58 *29.4 6-11-58 *6.18 7-21-58 .13 Base flow. * Operated as a continuous-record gaging station, a Approximately. DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES 285

Discharge measurements made at miscellaneous sites during water year 1956 Continued Measurements Drainage Measured Stream Tributary to Location area previously Date Discharge (water (cfs) (sq mi) years) Umpqua River basin, Oreg. Continued Pass CreeK. . Elk Creek...... NW£SW£ sec. 34, T.21 S. , 61.9 1955-57 11- 6-57 3.51 R.5 W. , 0.2 mile below 12-16-57 *20.6 Sand Creek and 3 miles 1-29-58 1,120 northeast of Drain. 2-16-58 3,620 3-20-58 *80.1 5- 1-58 *72.1 6-11-58 *44.5 7-21-58 5.51 9- 3-58 .50 9- 8-58 .41 9-12-58 .89 Coastal Streams between Umpqua and Rogue River basins, Oreg. Eel Creek. . Tenmile Creek.. NE£NE£ sec.13, T.23 S., all 1957 11- 8-57 4.51 R.13 W., at Lakeside 11-12-57 6.26 Junction £ mile west of 12-17-57 17.2 Lakeside. 1-17-58 70.6 2- 3-58 *86.5 2-16-58 154 3-24-58 *48.4 5- 5-58 *42.0 6-16-58 10.2 8- 1-58 3.62 9- 8-58 3.34 North Slough Pacific Ocean.. SWiNEj sec. 7, T.24 S., 2.42 1-17-58 28.7 (known R.12 W. , 3 miles north 3-26-58 12.0 locally as east of Hauser. 8-25-58 *.40 Bear Creek), Left Branch North Slough. . . NW-t sec.l, T.24 S., 1.71 1-17-58 19.7 of North R.13 W. , 0.2 mile above 3-26-58 6.95 Pork North confluence with Right 8-25-58 *.32 Slough Branch and 2 miles (known northeast of Hauser. locally as North Slough). North Pork Coquille River. NW-jNE-t sec. 29, T.26 S., 28.5 8-25-58 *5.46 Coquille R.ll W. , below Neely River. Creek 11 miles southeast of Coos Bay. Do...... do...... NE£NE£ sec. 22, T.28 S., - 8-25-58 9.83 R.12 W. , at Pox bridge 5 miles southeast of Coquille. North Pork Coquille River. In NW£ sec. 36, T.28 S., 276 1929-46*, 8-26-58 29.4 Coquille R.12 W. , at former 1949-52 River. gaging station 4£ miles northeast of Myrtle Point. Rogue River basin, Oreg Big Butte Rogue River. . . . In NWi sec. 3, T.34 S., 249 1945-57* 10- 9-57 182 Creek. R.I E., at former gaging station 1 mile south of McLeod. Slate Creek. Applegate In SW-fc sec. 10, T.37 S., 30.9 1913, 10-24-57 19.0 River. R.7 W. , at former gaging 1943-57* station 0.4 mile east of Wonder. Silver Illinois River. SW£SE£ sec. 16, T.36 S., 80.6 1956 8-27-58 *39.3 Creek. R.ll W., at mouth 8 miles southeast of Agness. Indigo ... .do...... NEjNWj sec. 4, T.36 S., 63.0 8-27-58 *20.2 Creek. R.ll W. , 0.6 mile above mouth and 5 miles south east of Agness. Rogue River. Pacific Ocean.. NWj sec. 18, T.35 S., - 1950-52 8-26-58 1,480 R.ll W. , 1,000 ft above mouth of Illinois River, at Agness. Illinois Kogue River. . . . SWiNW£ sec. 18, T.35 S., 995 1949-52 8-26-58 *198 River. R.ll W., 300 ft above mouth at Agness.

* Base flow. * Operated as a continuous-record gaging station, a Approximately. INDEX

Page Accuracy of field data and computed Bull Run, Oreg., Bull Run River near... 97 results...... 7 Lake Ben Morrow near...... 96,97 Acre-foot, definition of...... 2 Little Sandy River near...... 98 Agencies other than Geological Survey, Sandy River near...... 99 records collected by...... 11 Bull Run River near Bull Run, Oreg..... 97 Albany, Oreg., Calapooya River at..... 135 Butte Falls, Oreg., South Fork Big Willamette River at...... 136 Butte Creek near...... 256 Allegany, Oreg., West Fork Millicoma Butter Creek near Pine City, River near...... 246 Oreg...... 31 Alien Canal, Oreg., diversion by...... 32 Alsea, Oreg., Alsea River at...... 215 Calapooya Creek near Oakland, Oreg..... 242 Pall Creek near...... 217 Calapooya River, at Albany, Oreg...... 135 North Pork Alsea River at...... 215 at Holley, Oreg...... 134 South Fork Alsea River near...... 216 Camas Creek, near Lehman, Oreg...... 40 Alsea River, at Alsea, Oreg...... 215 near Ukiah, Oreg...... 41 near Tidewater, Oreg...... 218 Canby, Oreg., Molalla River near...... 162 South Fork,near Alsea, Oreg...... 216 Carson, Wash., Wind River near...... 92,93 Alsea River basin, Oreg., crest-stage Cascadia, Oreg., South Santiam River stations in...... 281 below...... 143 gaging-station records in...... 215-218 Castle Rock, Wash., Arkansas Creek Amazon Creek near Eugene, Oreg...... 131 near...... 205 Applegate River, near Applegate, Cowlitz River at...... 204 Oreg...... 267 Cathlamet, Wash., Elokomin River near.. 207 near Copper, Oreg...... 266 Central Oregon Canal, Oreg., diversion Ariel, Wash., Lewis River at...... 187 by...... 63 Arkansas Creek near Castle Rock, Wash. 205 Central Point, Oreg., Rogue River Arnold Canal, Oreg., diversion by..... 63 near...... 264 Asbury Creek basin, Oreg., crest-stage Cfs-day, definition of...... 2 stations in...... 281 Charlton Creek above Crane Prairie Ashland, Oreg., Emigrant Creek near... 262 Reservoir, near Lapine, Oreg..... 52 Astoria, Oreg., Youngs River near..... 211 Cinebar, Wash., Cinnabar Creek near.... 196 Aurora, Oreg., Pudding River at...... 164 Tilton River near...... 195,197 Azalea, Oreg., Cow Creek near...... 223 Cinnabar Creek near Cinebar, Wash...... 196 Cispus River near Randle, Wash...... 191 Battle Ground, Wash., Salmon Creek Clackamas River, above Three Lynx near...... 176 Creek, Oreg...... 173 Bear Creek at Medford, Oreg...... 263 at Big Bottom, Oreg...... 169 Beaver Creek near Paulina, Oreg...... 68 at Estacada, Oreg...... 174 Belknap Springs, Oreg., McKenzie Clear Lake, Oreg., McKenzie River at River near...... 118 outlet of...... 117 Smith River near...... 119 Clearwater River above Trap Creek, near Bend, Oreg., Deschutes River below.... 64 Toketee Falls, Oreg...... 234 Deschutes River near...... 61,62 Coast Fork. See Willamette River, diversions from Deschutes River Coast Pork. near...... 63 Coburg, Oreg., McKenzie River near..... 125 reservoirs in Deschutes River basin Columbia River, at The Dalles, above...... 60 Oreg...... 77 Tumalo Creek near...... 65 crest-stage stations in unnamed Big Bottom, Oreg., Clackamas River tributaries to...... 277,280 at...... 169 Computations, accuracy of results of... 7 Big Butte Creek, South Pork, near Contents, definition of...... 2 Butte Palls, Oreg...... 256 Control, definition of...... 2 Big Butte Springs near Butte Palls, Cook, Wash., Little White Salmon Oreg...... 11 River near...... 91 Big Creek below Skookum Meadow, near Cooperation, record of...... 1 Trout Lake, Wash...... 177 Copper, Oreg., Applegate River near.... 266 Big Marsh Creek near Crescent, Oreg... 11 Coquille River South Pork, above Big Spring Branch, east prong, Oreg., Panther Creek, near Illahe, Oreg. 247 discharge measurements of...... 22 at Powers, Oreg...... 251 west prong, discharge jneasurements near Illahe, Oreg...... 248 of...... 22 near Powers, Oreg...... 250 Biggs, Oreg., Deschutes River near.... 76 Coquille River basin, Oreg., crest- Birch Creek, at Rieth, Oreg...... 29 stage stations in...... 282 Blue Creek near Walla Walla, Wash..... 16 gaging-station records in...... 247-251 Blue River, near Blue River, Oreg..... 123 Cottage Grove, Oreg., Cottage Grove near McKenzie Bridge, Oreg...... 11 Reservoir near...... 110,111 Bolles, Wash., Touchet River at...... 20 Dorena Reservoir near...... 113,114 Breitenbush River above Canyon Creek, Mosby Creek near...... 115 near Detroit, Oreg...... 138 Row River near...... 114 Brockway, Oreg., Lookingglass Creek Cottage Grove Dam, Oreg., Coast Fork at...... 229 Willamette River below...... Ill South Umpqua River near...... 230 Cottage Grove Reservoir near Cottage Brown Creek near Lapine, Oreg...... 54 Grove, Oreg...... 110,111 Brush Creek basin, Oreg., crest-stage Cottonwood Creek. See Fox Creek near stations in...... 282 Fox, Oreg. 288 INDEX

Page Cougar, Wash., Curley Creek near...... 181 Desolation Creek near Dale, Oreg...... 38 Lewis River near...... 182,185 Detroit, Oreg., Breitenbush River Muddy River near...... 183 near...... 138 Pine Creek near...... 184 Detroit Reservoir near...... 139,140 Rush Creek near...... 180 North Santiam River near...... 137 Cow Creek,near Azalea, Oreg...... 223 Detroit Reservoir near Detroit, Oreg..139,140 near Riddle, Oreg...... 225 Dexter, Oreg., Middle Pork Willamette West Pork, near Glendale, Oreg...... 224 River near...... 106 Coweman River near Kelso, Wash...... 206 Dilley, Oreg., Tualatln River near..... 166 Cowlitz River, at Castle Rock, Wash... 204 Dorena, Oreg., Row River near...... 112 at Mossyrock, Wash...... 193 Dorena Reservoir near Cottage Grove, at Packwood, Wash...... 190 Oreg...... 113,114 near Kosmos, Wash...... 192 Downing Spring, Oreg., discharge near Mayfleld, Wash...... 200 measurements of...... 22 Cowlitz River basin, Wash., crest- Drain, Oreg., Elk Creek near...... 244 stage stations in...... 280-281 Drainage area, definition of...... 2-3 gaglng-station records in...... 190-206 Drew, Oreg., Elk Creek near...... 221 Coyote Creek near Crow, Oreg...... 128 Dry Creek near Walla Walla, Wash...... 18 Crane Prairie Reservoir, Oreg., Dugger Creek, Oreg., discharge contents of...... 60 measurements of...... 23 Crescent, Oreg., Crescent Creek near...... 58 Eagle Point, Oreg., Rogue River near... 258 Odell Creek near...... 55 East lateral (Emigrant Gap Reservoir) Crescent Creek at Crescent Lake, near near Ashland, Oreg...... 262 Crescent, Oreg...... 58 East Mud Creek, Oreg., branch of, Crescent Lake, Oreg., contents of..... 60 discharge measurements of...... 23 Crooked River, above Hoffman Dam, near east prong, discharge measurements Prineville, Oreg...... 70 of...... 22 near Culver, Oreg...... 71 west prong, discharge measurements near Post, Oreg...... 69 of...... 22 Crow, Oreg., Coyote Creek near...... 128 Elk Creek (tributary to Rogue River) Cubic feet per second per square mile, near Trail, Oreg...... 257 definition of...... 2 Elk Creek (tributary to South Umpqua Cubic foot per second, definition of.. 2 River) near Drew, Oreg...... 221 Cultus Creek above Crane Prairie Elk Creek (tributary to Umpqua River) Reservoir, near Lapine, Oreg.... 49 near Drain, Oreg...... 244 Cultus River above Cultus Creek near Elkton, Oreg., Umpqua River near...... 12,243 Lapine, Oreg...... 48 Elmira, Oreg., Pern Ridge Reservoir Culver, Oreg., Crooked River near..... 71 near...... 129 Deschutes River near...... 67 Elokomin River near Cathlamet, Wash.... 207 Curley Creek near Cougar, Wash...... 181 Emigrant Creek near Ashland, Oreg...... 262 Emigrant Gap Reservoir, Oreg., Dale, Oreg., Desolation Creek near.... 38 contents of...... 275 North Pork John Day River near...... 39 Engle Spring, Oreg., discharge Dallas, Oreg., Rickreall Creek measurements of...... 22 near...... 151 Estacada, Oreg., Clackamas River Data, accuracy of...... 7 at...... 174 explanation of...... 3-7 Eugene, Oreg., Amazon Creek near...... 131 Days Creek at Days Creek, Oreg...... 222 Dayton, Wash., East Pork Touchet Pall Creek, below Winberry Creek, near River near...... 19 Pall Creek, Oreg...... 107 Dayville, Oreg., John Day River near Alsea, Oreg...... 217 near...... 37 Fall River near Lapine, Oreg...... 57 Dead Canyon basin, Wash., crest-stage Parmington, Oreg., Tualatin River at... 167 stations in...... 276 Fern Ridge Reservoir near Elmira, Oreg. 129 Dee, Oreg., West Pork Hood River near 83 Pish Creek at Big Camas ranger station, Deer Creek (Deschutes River basin) near Toketee Palls, Oreg...... 235 above Crane Prairie Reservoir, Pish Lake, Oreg., contents of...... 275 near Lapine, Oreg...... 50 Pish Lake Dam, tunnel at, Oreg...... 11 Deer Creek (Umpqua River basin) near Fisher, Oreg., Five Rivers near...... 217 Roseburg, Oreg...... 231 Five Rivers near Fisher, Oreg...... 217 Deschutes County Municipal Improvement Pivemile Creek near Ukiah, Oreg...... 11 District Canal, Oreg., diversion Floods, special reports on...... 10 by...... 63 Foss, Oreg., Nehalem River near...... 212 Deschutes River, at Benham Palls, near Foster, Oreg., Middle Santiam River Bend, Oreg...... 61 near...... 144 at Moody, near Biggs, Oreg...... 76 Wiley Creek near...... 145 below Bend, Oreg...... 64 Pourbit Creek near Butte Falls, Oreg... 11 below Crane Prairie Reservoir, near Fox Creek at gorge, near Fox, Oreg..... 43 Lapine, Oreg...... 53 Furnish Canal, Oreg.,.diversion by..... 32 below Lava Island, near Bend, Oreg...... 62 Gaging station, definition of...... 2 below Snow Creek, near Lapine, Garrison Creek near Walla Walla, Wash.. 17 Oreg...... 47 Gaston, Oreg., Scoggin Creek below Wickiup Reservoir, near Lapine, near...... 165 Oreg...... 56 Geiger Creek basin, Oreg., crest-stage diversions from, near Bend, Oreg.... 63 stations in...... 282 near Culver, Oreg...... 67 Gibbon, Oreg., Umatilla River near..... 24 near Lapine, Oreg...... 11 Glendale, Oreg., West Fork Cow Creek near Madras, Oreg...... 74 near...... 224 Deschutes River basin, Oreg., crest- Glenwood, Wash., Klickitat River stage stations in...... 277 near...... 78,79 gaging-station records in...... 47-76 Glide, Oreg., Rock Creek near,...... 238 reservoirs in, above Bend, Oreg..... 60 Steamboat Creek near...... 237 INDEX 289

Page Goldendale, Wash., Little Klickitat Kerby, Oreg., Illinois River at...... 273 River near...... 80 Klickitat Creek at Mossyrock, Wash..... 198 Goshen, Oreg., Coast Pork Willamette Klickitat River, above West Pork, near River near...... 116 Glenwood, Wash...... 78 Government Camp, Oreg., Oak Grove near Glenwood, Wash...... 79 Pork near...... 171 near Pitt, Wash...... 82 Salmon River near...... 94 Klickitat River basin, Wash., gaging- Timothy Lake near...... 170,171 station records in...... 78-82 Grandview, Oreg., Metolius River Kosmos, Wash., Cowlitz River near...... 192 near...... 73 Grants Pass, Oreg., Rogue River at.... 265 Lake Ben Morrow, near Bull Run, Oreg... 96,97 Grave Creek at Pease Bridge, near Lake Creek, Oreg., North Pork Little Placer, Oreg...... 269 Butte Creek near...... 11,260,261 Grays River, Wash., Grays River South Pork Little Butte Creek near...... 208,209 near...... 11,259 West Branch Grays River near...... 210 Lake Creek near Sisters, Oreg...... 72 Grays River, above South Pork, near Lake Merwln, Wash., contents of...... 186,187 Grays River, Wash...... 208 Lake River basin, Wash., crest-stage below South Pork, near Grays River, stations in...... 280 Wash...... 209 Lakes and Reservoirs: West Branch, near Grays River, Wash. 210 Ben Morrow, Lake, near Bull Run, Grays River basin, Wash., gaging- Oreg...... 96,97 station records in...... 208-210 Cottage Grove Reservoir near Cottage Groenveld Creek basin, Wash., crest- 3rove, Oreg...... 110,111 stage stations in...... 277 Crane Prairie Reservoir, Oreg...... 60 Crescent Lake, Oreg...... 60 Harris Creek basin, Oreg., crest- Detroit Reservoir near Detroit, stage stations in...... 283 Oreg...... 139,140 Harrisburg, Oreg., Willamette River Dorena Reservoir near Cottage Grove, at...... 126 Oreg...... 113,114 Haskins Creek below reservoir, near Emigrant Gap Reservoir, Oreg...... 275 McMinnville, Oreg...... 158 Pern Ridge Reservoir near Elmira, Haskins Creek Reservoir near Oreg...... 129 McMinnville, Oreg...... 158,170 Pish Lake, Oreg...... 275 Haun Spring, Oreg., discharge Haskins Creek Reservoir near measurements of...... 22 McMinnville, Oreg...... 158,170 Heisson, Wash., East Pork Lewis River Lemolo Reservoir near Toketee Palls, near...... 188 Oreg...... 232,233 Heppner, Oreg., Willow Creek at...... 34 Lookout Point Reservoir near Lowell, Holland, Oreg., Sucker Creek near..... 271 Oreg...... 105,106 Holley, Oreg., Calapooya River at..... 134 McKay Reservoir near Pendleton, Hood River, Oreg., Hood River Oreg...... 27 near...... 84 Merwin, Lake, Wash...... 186,187 Hood River, near Hood River, Oreg..... 84 Silver Lake at Silver Lake, Wash..... 202 West Pork, near Dee, Oreg...... 83 Timothy Lake near Government Camp, Hood River basin, Oreg., gaging- Oreg...... 170,171 statlon records in...... 83-84 Wickiup Reservoir, Oreg...... 60 Hoskins, Oreg., Luckiamute River Yale Reservoir, Wash...... 186,187 near...... 148 Lakeside, Oreg., Tenmile Creek Husum, Wash., White Salmon River at... 87 near...... 245 Hydrologic conditions...... 12 Lapine, Oreg., Brown Creek near...... 54 diagram of...... 12 Charlton Creek near...... 52 Cultus Creek near...... 49 Illahe, Oreg., Rock Creek near...... 241 Cultus River near...... 48 South Pork Coqullle River near.....247,248 Deer Creek near...... 50 Illinois River, at Kerby, Oreg...... 273 Deschutes River near...... 47,53,56 East Pork, near Takilma, Oreg...... 270 Pall River near...... 57 near Selma, Oreg...... 274 Little Deschutes River near...... 59 West Pork below Rock Creek, near Quinn River near...... 51 O'Brien, Oreg...... 272 Lehman, Oreg., Camas Creek near...... 40 Lemolo Reservoir near Toketee Palls, Jackson Creek near Tiller, Oreg...... 219 Oreg...... 232,233 Jasper, Oreg., Middle Pork Willamette Lewis River, above Muddy River, near River at...... 108 Cougar, Wash...... 182 Jefferson, Oreg., Santiam River at.... 147 at Ariel, Wash...... 187 John Day River, at McDonald Perry, East Pork, near Heisson, Wash...... 188 Oreg...... 46 near Cougar, Wash...... 185 at Picture Gorge, near Dayville, Lewis River basin, Wash., crest-stage Oreg...... 37 stations in...... 280 at Prairie City, Oreg...... 36 gaging-station records in...... 177-188 at Service Creek, Oreg...... 45 reservoirs In...... 186 Middle Pork, at Ritter, Oreg...... 42 Lewis Spring, Oreg., discharge North Pork, at Monument, Oreg...... 44 measurements of...... 22 near Dale, Oreg...... 39 Little Butte Creek, at Lake Creek, John Day River basin, Oreg., crest- Oreg...... 11 stage stations in...... \ North Pork, at Pish Lake, near Lake discharge measurements at miscel Creek, Oreg...... 260 laneous sites in...... 284 near Lake Creek, Oreg...... 11,261 gaging-station records in...... 35-46 South Pork near Lake Creek, Oreg.....11,259 Johnson Creek (Cowlitz River basin), Little Deschutes River near Lapine, discharge measurements of...... 23 Oreg...... 59 Johnson Creek (Willamette River basin) Little Klickitat River, near Goldendale, at Sycamore, Oreg...... 175 Wash...... 80 near Wahkiacus, Wash...... 81 Kalama River below Italian Creek, near Little North Santiam River near Kalama, Wash...... 189 Mehama, Oreg...... 141 Kelso, Wash., Coweman River near...... 206 Little River at Peel, Oreg...... 239 290 INDEX

Page Little Sandy River near Bull Run, Millicoma River, West Fork, near Oreg...... 98 Allegany, Oreg...... 246 Little Walla Walla River at Milton, Milton, Oreg., North Fork, Walla Walla Oreg...... 11 River near...... 14 Little White Salmon River, at Willard, South Fork Walla Walla River near.... 13 Wash...... 89 Molalla River, above Pine Creek, near above Lapham Creek near Willard, Wilhoit, Oreg...... 161 Wash...... 90 near Canby, Oreg...... 162 near Cook, Wash...... 91 Monroe, Oreg., Long Tom River at...... 132 Little White Salmon River basin, Monument, Oreg., North Fork John Day Wash., gaging-station records River at...... t,.. .. 44 in...... 89-91 Morton, Wash., West Fork Tilton River London, Oreg., Coast Pork Willamette near...... 194 River at ...... 109 Mosby Creek at mouth, near Cottage Long Tom River, at Monroe, Oreg...... 132 Grove, Oreg...... 115 below Fern Ridge Dam, near Mossyrock, Wash., Cowlitz River at..... 193 Smithfield, Oreg...... 130 Klickitat Creek at...... 198 near Noti, Oreg...... 127 Mount Angel, Oreg., Pudding River Lookingglass Creek at Brockway, Oreg. . 229 near...... 163 Lookout Creek near Blue River, Muddy River below Clear Creek, near Oreg...... 11 Cougar, Wash...... 183 Lookout Creek tributary near Blue Myrtle Creek, Oreg., North Myrtle River, Oreg...... 11 Creek near...... 227 Lookout Point Reservoir near Lowell, South Myrtle Creek near...... 226 Oreg...... 105,106 Lowell, Oreg., Lookout Point Reservoir Necanicum River basin, Oreg., crest- near...... 105,106 stage stations in...... 281 Lower Columbia River basin, Oreg.- Nehalem River near Foss, Oreg...... 212 Wash. , crest-stage stations Niagara, Oreg., North Santiam River in...... 277-278,280,281 at...... 140 gaging-station records in...... 13-211 North Canal, Oreg., diversion by...... 63 Luckiamute River, at Pedee, Oreg...... 149 North Myrtle Creek near Myrtle Creek, near Hoskins , Oreg...... 148 Oreg...... 227 near Suver , Oreg ...... 150 North Santiam River, at Mehama, Oreg...... 142 McDonald Ferry, Oreg., John Day River at Niagara, Oreg...... 140 at ...... 46 below Boulder Creek, near Detroit, McEvoy Spring, Wash., discharge Oreg...... 137 measurements of ...... 22 North Umpqua River, above Copeland McKay Creek (Umatilla River basin), Creek, near Toketee Falls, Oreg.. 236 near Pendleton, Oreg...... 28 at Winchester, Oreg...... 241 near Pilot Rock, Oreg...... 26 below Lemolo Reservoir, near Toketee McKay Reservoir near Pendleton, Falls, Oreg...... 233 27 North Unit Main Canal, Oreg., McKenzle Bridge, Oreg., McKenzie diversion by...... 63 River at...... 120 North Yamhill River at Pike, Oreg...... 159 McKenzie River, at McKenzie Bridge, Noti, Oreg., Long Tom River near...... 127 Oreg...... 120 Numbers, downstream order and station.. 3 at outlet of Clear Lake, Oreg...... 117 near Belknap Springs, Oreg...... 118 Oak Grove Fork, above powerplant near Coburg, Oreg...... 125 intake, Oreg...... 172 near Vida, Oreg...... 124 near Government Camp, Oreg...... 171 South Fork, above Cougar Reservoir Oakland, Oreg., Calapooya Creek near Rainbow, Oreg...... 121 near...... 242 near Rainbow, Oreg...... 122 Oakridge, Oreg., Middle Fork McKenzie River basin, Oreg., discharge Willamette River near...... 101,104 measurements at miscellaneous North Fork of Middle Fork sites in...... 284 Willamette River near...... 103 McMinnville, Oreg., Haskins Creek Salmon Creek near...... 102 near...... 158 O'Brien, Oreg., West Fork Illinois Haskins Creek Reservoir near...... 170 River near...... 272 Madras, Oreg., Deschutes River Ochoco Creek near Prineville, Oreg..... 11 near...... 74 Ochoco Reservoir near Prineville, Map of the United States...... 9 Oreg...... 11 Marmot, Oreg., Sandy River near...... 95 Odell Creek near Crescent, Oreg...... 55 Marys River near Philomath, Oreg...... 133 Olalla Creek near Tenmile, Oreg...... 228 Maxwell Canal, Oreg., diversion by.... 32 Order, downstream and station numbers.. 3 Mayfield, Wash., Cowlitz River near... 200 Winston Creek near...... 199 Pacific Slope basins, Oreg., gaging- Meadow Creek below Lone Butte Meadow, station records in...... 212-275 near Trout Lake, Wash...... 179 Packwood, Wash., Cowlitz River at...... 190 Medford, Oreg., Bear Creek at...... 263 Partial-record station, definition Mehama, Oreg., Little North Santiam of...... 2 River near...... 141 Patterson Creek basin, Oreg., crest- North Santiam River at...... 142 stage stations in...... 281 Metolius River near Grandview, Oreg... 73 Paulina, Oreg., Beaver Creek near 68 Middle Santiam River at mouth near Pedee, Oreg., Luckiamute River at...... 149 Foster, Oreg...... 144 Peel, Oreg., Little River at...... 239 Mill Creek tributary to Cowlitz Pendleton, Oreg., McKay Creek near..... 28 River near Salkum, Wash... 201 McKay Reservoir near...... 27 Mill Creek tributary to South Umatilla River at...... 25 Yamhill River) near Willamina, Philomath, Oreg., Marys River 156 near...... 133 Mill Creek tributary to Willamette Pike, Oreg., North Yamhill River at.... 159 River 153 Pilot Rock, Oreg., McKay Creek near.... 26 Mill Creek tributary to Walla Walla Pine City, Oreg., Butter Creek near.... 31 River , at Walla Walla, Wash.... Pine Creek near Cougar, Wash...... 184 near Wallsi Walla, Wash...... Pitt, Wash., Klickitat River near. 82 INDEX 291

Page Placer, Oreg., Grave Creek near...... 269 Sandy River basin, Oreg., crest-stage Post, Oreg., Crooked River near...... 69 stations in...... 277 Powell Creek near Williams, Oreg...... 268 gaging-station records in...... 94-99 Powers, Oreg., South Pork Coquille Santiam River at Jefferson, Oreg...... 147 River at...... 251 Schwartz Spring Branch, north prong, South Pork Coquille River near...... 250 Oreg., discharge measurements of. 23 Prairie City, Oreg., John Day River south prong, discharge measurements at...... 36 of...... 23 Strawberry Creek near...... 35 Scoggin Creek near Gaston, Oreg...... 165 Prineville, Oreg., Crooked River Selma, Oreg., Illinois River near...... 274 near...... 70 Service Creek, Oreg., John Day River Prospect, Oreg., Red Blanket Creek at...... 45 near...... 254 Siletz River at Siletz, Oreg...... 214 Rogue River above...... 252 Silver Lake, Wash., Silver Lake Rogue River near...... 255 at...... 202 South Pork Rogue River near...... 253 Toutle River near...... 203 Publications on streamflow by Silver Lake at Silver Lake, Wash...... 202 Geological Survey...... 8-10 Sisters, Oreg., Lake Creek near...... 72 by State agencies...... 10-11 Squaw Creek near...... 66 Pudding River, at Aurora,, Oreg...... 164 Siuslaw River basin, Oreg., crest-stage near Mount Angel, Oreg...... 163 stations in...... 281 Skamokawa River basin, Wash., crest- Quinn River near Lapine, Oreg. 51 stage stations in...... 281 Smith River near Belknap Springs, Rainbow, Oreg., South Pork McKenzie Oreg...... 119 River near...... 121,122 Smithfield, Oreg., Long Tom River Rancheria Creek near Butte Palls, near...... 130 Oreg...... 11 South Mud Creek, Oreg., discharge Randle, Wash., Cispus River near...... 191 measurements of...... 23 Ransom Creek basin, Oreg., crest- South Myrtle Creek near Myrtle Creek, stage stations in...... 283 Oreg...... 226 Red Blanket Creek near Prospect, South Santiam River, at Waterloo, Oreg...... 254 Oreg...... 146 Reservoirs. See Lakes and Reservoirs. below Caseadia, Oreg...... 143 Rickreall CreeF~near Dallas, Oreg..... 151 South Umpqua River, at Tiller, Oreg.... 220 Riddle, Oreg., Cow Creek near...... 225 near Brockway, Oreg...... 230 Rieth, Oreg., Birch Creek at...... 29 South Yamhill River, near Whiteson, Ritter, Oreg., Middle Pork John Day Oreg...... 157 River at...... 42 near Willamina, Oreg...... 154 Rock Creek, near Glide, Oreg...... 238 Squaw Creek near Sisters, Oreg...... 66 near Illahe, Oreg...... 249 Stage-discharge relation, definition Rock Creek basin, Wash., crest-stage of...... 2 stations in...... 277 Steamboat Creek near Glide, Oreg...... 237 Rocky Creek basin, Oreg., crest-stage Strawberry Creek, above Slide Creek, stations in...... 281 near Prairie City, Oreg...... 35 Rogue River, above Prospect, Oreg..... 252 Sucker Creek near Holland, Oreg...... 271 at Dodge Bridge, near Eagle Point, Sutherlin Creek at Sutherlin, Oreg..... 240 Oreg...... 258 Suver, Oreg., Luckiamute River near.... 150 at Grants Pass, Oreg...... 26 Swalley Canal, Oreg., diversion by..... 63 at Raygold, near Central Point, Oreg. 264 Sycamore, Oreg., Johnson Creek at...... 175 below South Pork Rogue River, near Prospect, Oreg...... 25£ Takilma, Oreg., East Pork Illinois near Trail, Oreg...... 34 River near...... 270 South Pork, near Prospect, Oreg..... 25c Tenmile, Oreg., Olalla Creek near...... 228 Rogue River basin, Oreg., Coastal Tenmile Creek near Lakeside, Oreg...... 245 Streams between, and Umpqua Terms, definition of...... 2-3 River basin, discharge measure The Dalles, Oreg., Columbia River ments at miscellaneous sites in. 285 at...... 77 crest-stage stations in...... 282- 283 Three Lynx Creek, Oreg., Clackamas discharge measurements at miscel River above...... 173 laneous sites in...... 285 Tidewater, Oreg., Alsea River near..... 218 gaging-station records in...... 252-275 Tillamook, Oreg., Wilson River near.... 213 reservoirs in. 275 Tiller, Oreg., Jackson Creek near...... 219 Roseburg, Oreg., Deer Creek near...... 231 South Umpqua River at...... 220 Row River, above Pitcher Creek, near Tilton River, above Bear Canyon Creek, Dorena, Oreg...... 112 near Cinebar, Wash...... 195 near Cottage Grove, Oreg...... 114 near Cinebar, Wash...... 197 Runoff in inches, definition of...... West Pork, near Norton, Wash...... 194 Rush Creek, above falls, near Cougar, Timothy Lake near Government Camp, Wash...... 180 Oreg...... 170,171 above Meadow Creek, near Trout Lake, Toketee Palls, Oreg., Clearwater Wash...... 178 River near...... 234 Pish Creek near...... 235 Salem, Oreg., Mill Creek at...... 153 Lemolo Reservoir near...... 232,233 Willamette River at...... 152 North Umpqua River near...... 233,236 Salkum, Wash.. Mill Creek near...... 201Touchet, Wash., Walla Walla River Salmon Creek (Lake River basin) near near...... 21 Battle Ground, Wash...... 176 Touchet River, at Bolles, Wash...... 20 Salmon Creek (Willamette River basin) East Pork, near Dayton, Wash...... 19 near Oakridge, Oreg...... 102 Toutle River, near Silver Lake, Salmon River basin, Oreg., crest- Wash...... 203 stage stations in...... 281 Trail, Oreg., Elk Creek near...... 257 Salmon River near Government Camp, Trask River basin, Oreg., discharge Oreg...... 94 measurements at miscellaneous Sandy River, below Bull Run River, sites in...... 284 near Bull Run, Oreg...... 99 Trout Lake, Wash., Big Creek near...... 177 near Marmot, Oreg...... 95 Meadow Creek near...... 179 292 INDEX

Page Trout Lake, Wash., Rush Creek near.... 178 White River below Tygh Valley, Oreg... 75 White Salmon River near...... 85,86 White Salmon River, at Husum, Wash..... 87 Tualatin River, at Farmington, Oreg... 16 below Cascades Creek, near Trout near Dilley, Oreg...... 166 'Lake , Wash...... 85 near Willamette, Oreg...... 168 near Trout Lake, Wash...... 86 Tumalo Creek near Bend, Oreg...... 65 near Underwood, Wash...... 88 Tygh Valley, Oreg., White River below. 7 White Salmon River basin, Wash., gaging-station records in...... 85-88 Ukiah, Oreg., Camas Creek near...... 41 Whiteson, Oreg., South Yamhill River Umatilla project feed canal, Oreg., near...... 157 diversion by...... 32 Wickiup Reservoir, Oreg., contents of.. 60 Umatilla, Oreg., Umatilla River near.. 33 Wiley Creek near Foster, Oreg...... 145 Umatilla River, above Meacham Creek, Wilhoit, Oreg., Molalla River near..... 161 near Gibbon, Oreg...... 24 Willamette, Oreg., Tualatin River near. 168 at Pendleton, Oreg...... 25 Willamette River, at Albany, Oreg...... 136 at Yoakum, Oreg...... 30 at Harrisburg, Oreg...... 126 diversions from, between Yoakum and at Salem, Oreg...... 152 Umatilla gaging stations, Oreg.. 32 at Wilsonville, Oreg...... 160 near. Umatilla, Oreg...... 33 Coast Fork, at London, Oreg...... 109 Umatilla River basin, Oreg., crest- below Cottage Grove Dam, Oreg...... Ill stage stations in...... 276 near Goshen, Oreg...... 116 gaging-station records in...... 24-33 Middle Fork, above Salt Creek, near Umpqua River basin, Oreg., Coastal Oakridge, Oreg...... 101 Streams between, and Rogue River at Jasper, Oreg...... 108 basin, discharge measurements at below North Fork, near Oakridge, miscellaneous sites in...... 285 Oreg...... 104 crest-stage stations in...... 282 near Dexter, Oreg...... 106 discharge measurements at miscel North Pork of, near Oakridge, Oreg. 103 laneous sites in...... 284-285 Willamette River basin, Oreg., crest- gaging-station records in...... 219-244 stage stations in...... 278-280 Umpqua River near Elkton, Oreg...... 12,243 discharge measurements at miscel Underwood, Wash., White Salmon River laneous sites in...... 284 near...... gaging-station records in...... 101-175 Unnamed Spring, Wash...... 22 reservoirs in...... 170 Willamina, Oreg., Mill Creek near...... 156 Vida, Oreg., McKenzie River near...... 124 South Yamhill River near...... 154 Willamina Creek near...... 155 WSP, definition of...... Willamina Creek near Willamina, Oreg... 155 Wahkiacus, Wash., Little Klickitat Willard, Wash., Little White Salmon River near...... 81 River at...... 89 Walla Walla, Wash., Blue Creek Little White Salmon River near...... 90 near...... 16 Williams, Oreg., Powell Creek near..... 268 Dry Creek near...... 18 Willow Creek (tributary to C.olumbia Mill Creek at...... 17 River), at Heppner, Oreg...... 34 Mill Creek near...... 1 Willow Creek basin (tributary to Col Walla Walla River, near Touchet, umbia River), Oreg., crest- Wash...... 21 stage stations in...... 277 North Fork, near Milton, Oreg...... 14 Willow Creek (tributary to Rogue River) South Fork, near Milton, Oreg...... 13 near Butte Falls, Oreg...... 11 Walla Walla River basin, Oreg.-Wash., Wilson River near Tillamook, Oreg...... 213 gaging-station records in...... 13-22 Wilsonville, Oreg., Willamette River-at 160 springs in, discharge measurements Winchester, Oreg., North Umpqua River at 241 of...... 22-23 Wind River, above Trout Creek, near Wash., crest-stage stations in...... 276 Carson, Wash...... 92 discharge measurements at mis near Carson, Wash...... 93 cellaneous sites in...... 284 Wind River basin, Wash., gaging- Washougal River basin, Wash., crest- station records in...... 92-93 stage stations in...... 277 Winston Creek near Mayfield, Wash...... 199 Washougal River near Washougal, Work, division of...... 2 Wash...... 100 scope of...... 1 Waterloo, Oreg., South Santiam River at...... 146 Yale Reservoir, Wash., contents of... .186,187 West Division main canal, Oreg., Yellowhawk Creek near Walla Walla, diversion by...... 32 Wash...... 17 Western Land Canal, Oreg., diversion Yoakum, Oreg., Umatilla River at...... 30 by...... 32 Youngs River near Astoria, Oreg...... 211

U.S. GOVERNMENT PRINTING OFFICE : 1960 O -534540