STATISTICAL SUMMARIES OF STREAMFLOW DATA IN OREGON: VOLUME 1-MONTHLY AND ANNUAL STREAMFLOW, AND FLOW-DURATION VALUES By Robert L. Moffatt, Roy E. Wellman, and Janice M. Gordon U.S. GEOLOGICAL SURVEY Open-File Report 90-118 Prepared in cooperation with the OREGON WATER RESOURCES DEPARTMENT Portland, Oregon 1990 U.S. DEPARTMENT OF THE INTERIOR MANUEL LUJAN, JR., Secretary U.S. GEOLOGICAL SURVEY Dallas L. Peck, Director For additional information Copies of this report can write to: be purchased from: Oregon Office Chief U.S. GeojLogical Survey U.S. Geological Survey Books an^ Open-File Reports Section 10615 S.E. Cherry Blossom Drive Federal Center, Building 810 Portland, Oregon 97216 Box 2542J5 Denver, CO 80225 11 CONTENTS Page Abstract --------------------------------------------------------- 1 Introduction ----------------------------------------------------- 1 Streamflow records ----------------------------------------------- 1 Summary tables --------------------------------------------------- 8 Station descriptions ---------------------------------------- 8 Monthly and annual mean discharges -------------------------- 8 Duration table of daily mean flows -------------------------- 9 References ------------------------------------------------------- 10 Gaging-station descriptions and statistical tables --------------- 11 Index ------------------------------------------------------------ 406 ILLUSTRATIONS [Plate is in pocket] Plate 1. Map showing location of streamflow gaging stations in Oregon. Figure 1. Graphs showing periods of continuous gaging station record used in computing statistics -------------- 2. Graph showing the percentage of time discharge of the Santiam River at Jefferson was equaled or exceeded ---------------------------------------- 111 STATISTICAL SUMMARIES OF STREAMFLOW DATA IN OREGON: VOLUME 1 -- MONTHLY AND ANNUAL STREAMFLOW, AND FLOW-DURATION VALUES By Robert L. Moffatt, Roy E. Wellman, and Janice M. Gordon ABSTRACT Statistical summaries of streamflow data at 375 stream-gaging sites are presented in this report to aid in appraising the hydrology of river basins in Oregon. Summaries for 30 of these sites were compliled into separate periods because of implementation of reservoir regulation during the period of data collection. Periods before and after regulation are presented for comparison. The physical and operational features for each gaging station are described briefly. Streamflow data are summarized in monthly and annual tables of flow statistics and duration information. INTRODUCTION This is the first of two volumes of statistical summaries of streamflow data collected at gaging stations in Oregon. Volume 1 contains statistical summaries of monthly and annual flow and of flow- duration. Volume 2 will contain statistical summaries of annual low- flow, high-flow, and flood frequency data. The statistical summaries provide streamflow characteristics based on historical data. This report was prepared in cooperation with the OWRD (Oregon Water Resources Department). Locations of gaging stations used in this report are shown on plate 1 (in pocket at back of report). STREAMFLOW RECORDS Both active and discontinued gaging stations having a minimum of 10 years of daily-mean discharge values were used in this report (fig. 1). For active stations the period of record extends to the end of the 1987 water year (ending on September 30). The data compiled in these reports had to satisfy one of two criteria. The data had to be hydrologically transferable (for use in estimating streamflow in ungaged basins), or it had to be a significant indicator of flow availability (Riggs, 1968). For example, data collected at the outlet of a natural lake would have little hydrologic transferability (due to storage of water in the lake), but would be a good indication of low-flow availability as well as flood runoff. Hydrologic data from canals and reservoirs were not used in this report. Data for combined-flow sites include diverted flow which may, or may not, reenter the stream. Sometimes the natural flow of a stream may be altered by the construction of a dam, an irrigation diversion, or by the augmentation of flow through diversions by adjacent basins. If this occurs during the operation of a stream gaging station, the statistical summaries must reflect both natural and altered flow, providing there are at least 10 years of data for each. Data for 30 sites of this type are included. SITE PAGE No. No. 10366000 11 10370000 12 10371000 13 10371500 14 10378500 15 10384000 16 10388001 17 10390001 18 10393500 19 10396000 20 10397000 21 10403000 22 10406500 23 11339500 24 11340500 25 11493500 27 11497500 28 11501000 29 11502500 30 11503000 31 11504000 32 11509500 33 11510700 34 11514500 35 13181000 36 13182000 37 13183000 38 13184000 39 13214000 40 1880 1900 1920 1940 1960 1980 2000 PERIOD OF RECORD SITE PAGE No. No. 1 ' i i i 13215000 41 13216500 42 13217500 43 13220000 44 13220500 45 13226500 46 13227000 47 13228000 48 13269300 49 13270800 50 13273000 51 13274200 52 13275000 53 13275300 54 13275500 55 13277000 56 13286700 57 13288200 59 13289500 60 13290190 61 13292000 62 13318500 63 13318800 64 13319000 65 13320000 66 13323500 67 13323600 68 13325001 69 13327500 70 1332950 71 i i i i i 1880 1900 1920 1940 1960 1980 2000 PERIOD OF" RECORD Figure 1.--Periods of continuous gaging station record used in computing statistics. 2 SITE PAGE No. No. 13330000 72 13330500 73 13331500 74 13332500 75 13333000 76 14010000 77 14010500 78 14010800 79 14011000 80 14020000 81 14020300 82 14021000 83 14022000 84 14022200 85 14022500 86 14023500 87 14025000 88 14026000 89 14032000 91 14033500 92 14034500 93 14034800 94 14036000 95 14037500 96 14038500 97 14038530 99 14040500 100 14041500101 14042000 102 1880 1900 1920 194-0 I960 1980 2000 PERIOD OF RECORD SITE PAGE No. No. 14042500 103 14044000 104 14044500 105 14046000 106 14046500 107 14047390 108 14048000 109 14050000 110 14050500 111 14051000 112 14052000 114 14052500 115 14054000 116 14054500 117 14055500 118 14056500 119 14057000 120 14057500 122 14060000 123 14061000 124 14063000 125 14064500 126 14066000 128 14070500 130 14073001131 14075000 132 14076500 133 14077500 134 14078000 135 14078500 136 1880 1900 1920 1940 1960 1980 2000 PERIOD OF RECORD Figure 1.--Periods of continuous gaging station record used in computing statistics.--Continued 3 SITE PAGE No. No. 14079500 137 14080500 138 14087400 149 14087500 141 14088000 142 14091500 143 14092500 144 14092885 146 14093000 147 14097100 148 14097200 149 14101500 150 14103000 151 14113200 153 14113400 154 14118500 155 14120000 156 14131000 157 14134000 158 14134500 159 14135000 160 14135500 161 14137000 162 14138800 163 14138850 164 14138870 165 14138900 166 14139500 167 14139700 168 14139800 169 1880 1900 1920 1940 1960 1980 2000 PERIOD OF RECORD SITE PAGE No. No. 14141500 170 14142500 171 14144800 172 14144900 173 14145500 174 14146000 176 14146500 177 14147000 178 14147500 179 14148000 180 14150000 182 14150300 183 14150800 184 14151000 185 14151500 187 14152000 188 14152500 189 14153500 190 14154500 191 14155500 192 14156000 194 14156500 195 14157000 196 14157500 197 14158000 198 14158500 199 14158790 200 14158850 210 14159000 202 14159200 204 1880 1900 1920 1940 1960 1980 2000 PERIOD 0^ RECORD Figure 1.--Periods of continuous gaging station record used in computing statistics.--Continued 4 SITE PAGE No. No. 11111 14159500 205 14161100 207 14161500 208 14162000 209 14162200 210 14162500 211 14163000 213 14165000 214 14165500 215 14166000 216 14166500 217 14167000 218 14169001 219 14169300 220 14170000 221 14170500 223 14171000 224 14172000 225 14173500 226 14174000 227 14178000 229 14179000 230 14181500 231 14182500 233 14183000 234 14185000 236 14185800 237 14185900 238 14186000 239 14186500 240 i i i i i 18 30 1900 1920 1940 1960 1980 2000 PERIOD OF RECORD SITE PAGE No. No. 11111 14187000 241 14187100 242 14187200 243 14187500 244 14188800 246 14189000 247 14189500 249 14190000 250 14190500 251 14190700 252 14191000 253 14192500 255 14193000 256 14193300 257 14194000 258 14194300 259 14195000 260 14196500 261 14197000 262 14198000 263 14198500 264 14200000 265 14200300 266 14201000 267 14201500 268 14202000 259 14202500 270 14202980 271 14203000 273 14203500 273 i i i i i 1880 1900 1920 1940 I960 1980 2000 PERIOD OF RECORD Figure 1.--Periods of continuous gaging station record used in computing statistics.--Continued 5 SITE PAGE No. No. 14204000 275 14204500 276 14205500 277 14206000 278 14206500 279 14207500 280 14208000 282 14208500 283 14208700 284 14209000 285 14209500 287 14210000 288 14211000 290 14211500 291 14211720 292 14248700 293 14251500 294 14301000 296 14301500 297 14302500 298 14302900 299 14303000 300 14303600 301 14305500 302 14306030 303 14306036 304 14306100 305 14306400 306 14306500 307 1880 1900 1920 1940 1960 1980 2000 PERIOD OF RECORD SITE PAGE No. No. 14306600 308 14306700 309 14306800 310 14306810 311 14306900 312 14307500 313 14307580 314 14307620 315 14307645 316 14307700 317 14308000 318 14308500 319 14308600 320 14308700 321 14309000 322 14309500 323 14310000 324 14310700 325 14311000 326 14311200 327 14311500 328 14312000 329 14312200 330 14312500 331 14315500 332 14316500 333 14316700 334 14317500 335 14317600 336 14318000 337 1880 1900 1920 1940 1960 1980 2000 PERIOD OF RECORD Figure 1.--Periods of continuous gaging station record used in computing statistics.--Continued 6 SITE PAGE No. No. 14318500 338 14319200 339 14319500 340 14319900 341 14320700 342 14321000 343 14322000 344 14323200 345 14324500