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DEPARTMENT OF THE INTERIOR Hubert Work, Secretary
U. S. GEOLOGICAL SURVEY George Otis Smith, Director WATER-SUPPLY PAPER 533
SURFACE WATER SUPPLY OF THE UNITED STATES 1921 PART XII. NORTH PACIFIC SLOPE DEAINAGE BASINS B. SHAKE RIVER BASLN
NATHAN C. GROVER, Chief Hydraulic Engineer G. C. BALDWIN, G. L. PARKER, C. G. PAULSEN A. B. PURTON, and F. F. HENSHAW District Engineers
Prepared in Cooperation with the States of IDAHO, OREGON, NEVADA, AND WASHINGTON
WASHINGTON GOVERNMENT PRINTING OFFICE 1925 DEPARTMENT OF THE INTERIOR Hubert Work, Secretary
U..S. GEOLOGICAL SURVEY George Otis Smith, Director.
Water-Supply Paper 533
SURFACE WATER SUPPLY OF THE UNITED STATES
1921
PART XII. NOKTH PACIFIC SLOPE DKAINAGE BASINS
B. SNAKE RIVER BASIN
NATHAN C. GROVER, Chief Hydraulic Engineer G. C. BALDWIN, G. L. PARKER, C. G. PAULSEN A. B. PTJRTON, and F. F. HENSHAW District Engineers
Prepared in Cooperation with the States of IDAHO, OREGON, NEVADA, AND WASHINGTON
Water Resources Branch, Geological Survey, Box 3 106, Capitol Station^ Oklahoma GV. Okh.,
WASHINGTON GOVERNMENT PRINTING OFFICE 1925 ADDITIONAL COPIES OF THIS PUBLICATION MAY BE PEOCUEED FROM THE SUPEEINTENDENT OF DOCUMENTS , GOVEENMENT FEINTING OFFICE WASHINGTON^ D. c. AT 25 CENTS PER COPY CONTENTS
1 i Page Authorization and scope of work__.______-______1 Definition of terms______2 Explanation of data______-______,-______..______--_ 3 Accuracy of field data and computed results _-______^___ 4 Publications ______: ______..___,;_ _._v _ 5 Cooperation ______-_--_____*..,--______^_ 4 «^^_ 9 Division of work ------__------______9 Gaging-station records ______10 Snake River ____----__.'__ _-___-____.-____-______10 Snake River at south boundary of Yellowstone National Park,. 10 Jackson Lake at Moran, Wyo--_------______^. __ 12 Snake River near Moran, Wyo____----______.___.,.._ 13 Snake River near Heise, Idaho ______-____ 14 Diversions from Snake River between Heise and Shelley gaging stations, Idaho______16 Snake River near Shelley, Idaho______.._____-_-_.._,-______,-__ 17 Diversions from Snake River between Shelley and Porterville gaging stations, Idaho__-______-___,__^___ T _,_ 18 Snake River at Porterville Bridge, near Blackfoot, Idaho-4*.--- 19 Diversions from Snake River between Porterville and I&lackfoot gaging stations, Idaho.______-^______21 Snake River near Blackfoot, Idaho ______22 Snake River at Neeley, Idaho__-____-____-- ______24 Lake Walcott near Minidoka, Idaho-_-____-____>___i_..,i^_,_ 26 Snake River near Minidoka; Idaho______i._____,^______27 Lake Milner at Milner, Idaho___.______29 Snake River at Milner, Idaho,_^_ KWr1 -____,______;_.,_ __,_ 29 Snake River near Twin Falls, Idaho-,_^______.^_ 32 Snake River near Hagerman, Idaho- ______^ _____._ _.__._ 34 Snake River at King Hill, Idaho__-______36 Snake River near Murphy, Idaho______-_ 37 Snake River at Weiser, Idaho-______40 Snake River at Riparia, Wash.___..______._.^__ 42 Tributary basins. ______..l _ i. 4. - - - 43 Henrys Fork near Lake, Idaho.----.,----^------..-!- 43 Henrys Fork at Warm River, Idaho.______r-_;_^.____ 45 Henrys Fork near Ashton, Idaho^--^---..-..--^.!-*-.--^^,. 46 Diversions from Henrys Fork between Ashton and St. Anthony gaging stations, Idaho____^___,._^^-______*______|.__ 48 SHenryls Fork at St. Anthony, Idahou«______-_^;_.__^___,_ i _uu;_ 49 Diversions from Henrys Fork between St. Anthony a»d Rexburg gaging stations, Idaho______...^^____--.__ii.___.__-__._ 50 Henrys Fork near Rexburg, Idaho------_-__--_-____H r ---^-_ 51 IV CONTENTS
Gaging-station records Continued. Tributary basins Continued. Page Warm River at Warm River, Idaho______-_---_____-_-___.._ 53 Robinson Creek at Warm River, Idaho.______54 Diversions from Fall River above gaging station near Squirrel, Idaho______56 Fall River near Squirrel, Idaho.______--_-___------____ 57 Diversions from Fall River between Squirrel and Chester gaging stations, Idaho ______58 Fall River near Chester, Idaho______----_---__------59 Teton River near St. Anthony, Idaho. ______61 Diversions from Teton River between gaging station near St. Anthony and mouth of river, Idaho.______--__-.-_----____- 62 Canyon Creek near Newdale, Idaho______-__.___.,______63 Willow Creek near Ririe, Idaho______.___-___-______-_.-_- 65 Willow Creek near lona, Idaho_--______----___-__----_- 66 Grays Lake outlet near Herman, Idaho.______----__-_..-___ 68 Idaho (Government) canal near Shelley, Idaho______69 Blackfoot River above reservoir, near Henry, Idaho...... :_____ 71 Blackfoot-Marsh reservoir near Henry, Idaho.______73 Blackfoot River near Henry, Idaho.______74 Blackfoot River near Shelley, Idaho____.______-_-__-__ 76 Blackfoot River near Blackfoot, Idah"o______77 Little Blackfoot River at Henry, Idaho.______-__ 79 Meadow Creek near Henry, Idaho______81 Idaho (Government) canal near Firth, Idaho.______82 Sand Creek near Firth, Idaho.______-_-__-_------_-_ 84 Fort Hall upper canal near Blackfoot, Idaho--______--.-_ 85 Fort Hall lower canal near Blackfoot, Idaho.______87 Mud Lake at Terreton, Idaho______---_-_-_____ 88 Camas Creek near Dubois, Idaho______- 89 Camas Creek near Camas, Idaho______--______-___- 91 Beaver Creek at Dubois, Idaho.__-_____-_ ._._-_-______92 Beaver Creek at Camas, Idaho__-______-______.-___ 94 Medicine Lodge Creek near Small, Idaho.______95 Birch Creek near Reno, Idaho.______96 Little Lost River at Raymond ranch near Howe, Idaho ______98 Little Lost River near Howe, Idaho.______99 Wet Creek at Clyde school, near Howe, Idaho______101 Big Lost River at Howell ranch, near Chilly, Idaho ______102 Big Lost River below Chilly canal, near Chilly, Idaho._____ 104 Big Lost River below Chilly Sinks, near Chilly, Idaho..______106 Big Lost River (back channel) below Chilly Sinks, near Chilly, Idaho ___...______---____ 108 Big Lost River (east channel) above Mackay reservoir, near Mackay, Idaho...... ______.______----_-_-__ 110 Big Lost River (west channel) above Mackay reservoir, near Mackay, Idaho______.-_-___-_._--______-__- 112 Mackay reservoir near Mackay, Idaho_____. ______!__ 114 Big Lost River below Mackay reservoir, near Maekay, Idaho. _ 115 Big Lost River at Leslie, Idaho.______117 Big Lost River near Moore, IdahO-_..______..______119 Thousand Springs Creek near Chilly, Idaho.______-____l_ 121 Warm Spring Creek (east channel) near Mackay, Idaho.______123 CONTENTS V
Gaging-station records Continued. , ! ' Tributary basins Continued. Page Warm Spring Creek (west channel) near Mackay, IdahOi.__ 125 Sharp ditch near Mackay, Idaho______.._ 127 Cedar Creek below power plant, near Mackay, Idaho.______129 Clark ditch near Mackay, Iddho______i.______130 Alder Creek near Mackay. Idaho______..____-______^i.___ 132 Antelope Creek near Darlington, Idaho--__-_-_-___-______133 Pass Creek near Leslie, Idahou^-.-----^------. ______135 Portneuf River at Topaz, Idaho______-______r______137 Portneuf River at Pocatello, Idaho______.,__:-____-__-__ 138 North Side Minidoka canal near Minidoka, Idaho______-_____ 141 South Side Minidoka canal near Minidoka, Idaho-______'___ 143 Goose Creek above Trapper Creek, near Oakley, Idaho___.___ 145 Trapper Creek near Oakley, Idaho. ____^ ______147 P. A. lateral near Milner, Idaho____i._ ___:.;:_-______--__..- 149 Murtaugh canal near Milner, Idaho______-______150 North Side Twin Falls canal at Miiner, Idaho.______152 South Side Twin Falls canal at Milner, Idaho.______._.__ 154 Blue Lakes outlet near Twin Falls, Idaho ______-j_ __ 156 Clear Lakes outlet near Buhl, Idaho____.______-^-_____--___ 161 Salmon Falls Creek near Sah Jacinto, Nev______-_--___-_____ 166 Big Wood River at Ketchum, Idaho___.______---___-- __ 168 Big Wood River at Gimlet, Idaho--______-___J-: ___ 169 Big Wood River at Hailey,1 Idaho ______-.; _- 171 Big Wood River at Glendale Bridge, near Bellevue, Idaho. ____ 174 Big Wood River near Bellevue, Idaho_.____.-____----___---_ 176 Big Wood River below Magic dam, near Richfield, Idaho._:___ 178 Big Wood River above North Gooding canal Bear Shoslione, Idaho.. _____.____._._..__,__.-._____-___.-.---_-.--- 179 Big Wood River below North Gooding canal, near Shoshone, Idaho______..______-_._-__-_-__---_------_ --- 181 Big Wood River at Gooding, Idaho___..______-_-_----_._-_--- 182 Big Wood River near Gooding, Idaho.______.^______184 Warm Springs Creek near Ketchum, Idaho.______186 Trail Creek at Ketchum, Idaho._____._.__._...______188 East Fork of Big Wood River At Gimlet, Idaho_ . _ 1 ______189 Big Wood Slough at Hailey, Idaho.-______.__.._. 190 Camas Creek near Blaine, Idaho_-_--__------192 Little Wood River near Carey, Idaho...... ______^_ __-_ 194 Little Wood River near Richfield, Idaho______196 Fish Creek above dam, near Carey, Idaho.______198 West Fork of Fish Creek near Carey, Idaho. ______200 Silver Creek near Picabo, Idaho._-__--_------,- 202 Sucker Creek near Homedale, Idaho.______---_------_ 204 Owyhee River near Gold Creek, Neb______-_----_---_- 206 Owyhee River near Owyhee, Nev_._-__------208 Owyhee River near Owyhee, Oreg__--__--_- ______-_____,. 209 South Fork of Qwyhee River near Deep Creek, Ney_-_--_^__- 211 Jack Creek near Tuscarora, Nev___------,--T---VT----- 212 Boise River near Twin Springs, Idaho______--_------214 Arrowrock reservoir at Arrowrock, Idaho.------r --- 216 Boise River at Dowling ranch, near Arrowrock, Idaho______217 VI CONTENTS
Gaging-station records Continued. Tributary basins Continued. Page Boise River at Notus, Idaho-______--___---______219 South Fork of Boise River near Lenox, Idaho,______221 Moore Creek near Arrowrock, Idaho-...-.--....---.,.,------223 Diversions from Boise River, Idaho__:______,.._-___ 225 Malheur River near Drewsey, Oreg______-,-__^___-,,___ 226 Warmsprings reservoir near Riverside, Oreg____,<_!______^27 Malheur River below Warmsprings leservoir, near Riverside, Oreg ______.______- -.______-_ 228 Malheur River near Namorf, Oreg_____-______.,__,.-_---_-- 230 Malheur River near Hope, Oreg_ __.;.___-_.._____'- _;-.-:______232 Willow Creek near Malheur, Oreg______--_^___-_--_- 233 Payette River near Horseshoe Bend, Idaho.__^_.._____.___._ 235 North Fork of Payette River at Lardo, Idaho______.. _;_ ___ _ 237 North Fork of Payette River at Van Wyck, Idaho.______239 Gold Fork of Payette River near Roseberry,, Idaho ______241 South Fork of Payette Riyer near Garden Valley, Idaho. __ 243 South Fork of Payette River near Banks, Idaho.______244 Deadwood River near Lowman, Idaho______*,_ __--_ 245 Weiser River above Crane Creek, near Weiser, Idaho ______246 West Fork of Weiser River near JjTruitvale, Idaho^______;..-_- 248 Lost Creek near Tamarack, Idaho-______250 Middle Fork of Weiser River near Mesa, Idaho ______252 Little Weiser River near Indian Valley, Idaho___'__.______254 Little Weiser River near Cambridge, Idaho_____!______256 Crane Creek at mouth, near Weiser, Idaho.______^______258 Crane Creek Irrigation District canal near Weiser, Idaho______260 Weiser Irrigation District canal near Weiser, Idaho-______:._-. 261 Mann Creek near Weiser, Idaho--____------__--_---_-----_ 263 Powder River near North Powder, Oreg-______264 Salmon River at Stanley, Idaho__'______-_-__-^ r.--____ 266 Salmon River at Salmon, Idaho____^_-_-__.-_--_-w_-_------267 Salmon River at Whitebird, Idaho______-_--___------,_- 269 Valley Creek at Stanley, Idaho.______. -______271 Yankee Fork of Salmon River near Clay ton, Idaho ______272 Warm Springs Creek at Robinsoa Bar near Clay ton, Idaho____ 274 Grande Ronde River at La Grande, Oreg.______.______275 Clearwater River at Kamiah, Idaho___-____-__-__----_-__-_ 277 Miscellaneous measurements.______-______--__ -_-,-.--_-__----- 279 Index ______.______- 287
ILLUSTRATIONS
Page PLATE I. A, Price current meters; B, Typical gaging station______2 II. Water-stage recorders: A', Stevens continuous; B, Gurley print ing; C, Friez______. ____ ^...__-_. __ 3 8UBFACE WATEB StJPPLY OF SNAKE EIYEE BA&IN, 1921
This volume is onj& of a series, of 14 reports presenting results of measurements of flow made on streams in the United States during the year ending September 30, 1921. The data presented in these reports were collected by the United States Geological Surrey under the following authority contained in the organic law (20 Slat. L., p. 394): ( Provided, That this officer [the Director] shall have the direction of the Geological Survey and the classification of public lands and examination of the geological struc ture, mineral resources, and products of the national domain. The work was Ibegun ui 18§8 in connection with special studies relating to irrigation in the arid West. Sinbe the fiscal year ending June 30, 1895, successive sundry civil bills passed by Congress have carried the following item and appropriations: For gaging the streams and determining the water supply of the United States, sand for the investigation of underground currents and artesian wells, and for the preparation of reports upon the best methods of utilizing the water resources. Annual appropriations for the fiscal years ending, June 30, 18,95-1922 . 1895 -___^__J____LJJ______..__, ____^__._., $12*500.00 1896______' ______- ______,* ...-, 20,;0(HJ» 00 .-; 1897 to 1900, inclusive ______. ___ 50,000.00 , v , 1901 to 1902, inclusive ______100, QOa 00 1903 to 1906, inclusive ______.._., 200, 000. 00 1907. ______'.______:______--_------150,000.00 : 1908 to 1$W, inclusive ______^-.-._ 100> 000. 00 r 1911 to 1917, inclusive. ______150, Measurements of stream flow have been made at about 5,200 points in the United States and also at many points in Alaska and the Hawaiian Islands. In July, 1921, 1,350 gaging stations were being maintained by the Survey and the cooperating organizations. Many miscellaneous discharge measurements are. made, at .other points. In connection with this work data were also' collected in regard t6 pre cipitation, evaporation, storage .reservoirs, river profiles, and water power in many sections of the country and will be made available in the water-supply papers from time to time. DEFINITION OF TE&MS The volume of water flowing in a stream the^ "runoff" or "disr qharge" is expressed in various terms,, ;each of , which fras become associated with a certain class of work. These terms may he divided into two groups (1) those that represent a rate of flow, as second-feet gallons per minute, miners' inches, and discharge in second-feet per square mile, and (2) those that represent,the actual quantity of water, as run-off in inches, acre-feet, and millions of cubic feet. The principal terms used in this series of reports are tsecond-feet, second-feet per square mile, run-off in inches, and acre-feet. They may be defined ,as follows: " Second-feet" is an abbreviation for " cujbip feet per second." A second-foot is the rate of discharge of water flowing in a channel of rectangular cross section 1 foot wide and 1 foot deep at an average velocity of 1 foot per second. It is generally used as a fundamental unit from which others are computed. " Second-feet per square mile " is the average number of eubic feet of water flowing per second from each square mile of area drained,-on the assumption that the run-off is distributed uniformly both asregards time and area. "Run-off in inches" is the depth to which an area would be covered if all the water flowing from it in a given period were uniformly dis tributed on the surface. It is used for comparing rua-off with rainfall, which is usually expressed in depth in inches. An "acre-foot," equivalent to 43,560 cubic feet, is the quantity re quired to cover an acre to the depth of 1 foot. The term is commonly used in connection with storage for irrigation. The following terms not in common use &re here defined; " Stage-discharge relation "; an abbreviation for the term " relation of gage height to discharge." i- v , " Control "; a term used to designate the natural section or stretch of the channel or artificial structure below thegage wnich determines th& stage-control relation at the gage. It should bb nb^eid that the control may not be the same section or sections at all stages. U. S. GEOLOGICAL SURVEY WATER-SUPPLY PAPER 533 PLATE I A. PRICE CURRENT METERS. B. TYPICAL GAGING STATION. U. 8. GEOLOGICAL SURVEY WATER-SUPPLY PAPER 533 PLATE II i L. STEVENS CONTINUOUS. B. (iURLRY PRINTING. C. FRIEZ. WATER-STAGE RECORDERS. EXPLANATION OF DATA 3 The "point of zero flow;" for. a gagkig station is that point on the gage the gage height at which water ceases to flow over the control. EXPLANATION OF DATA The data presented in this report cover the year beginning October 1, 1920, and ending September 30, ,1921. At the be- ginning of January in most parts of the United States much of the pre cipitation in the preceding three months is stored as ground water, in the form of snow or ice, or in ponds, lakes, and swamps, and this stored water passes off in the streams during the spring break-up. At the end of September, on the other hand, the only stored water available for run-off is possibly a small quantity in the ground; there fore the run-off for. the year beginning October 1 is practically all derived from precipitation within the year. The base data collected at gaging stations consist of .records of stage, measurements of discharge, and general information used to supplement the gage heights and discharge measurements in deter mining the daily flow. The records of stage are obtained either from direct readings on a staff or chain gage or from a water-stage recorder that gives a continuous record of the fluctuations. Measurements 'of discharge are made with a current meter. (See/ Pis. I, IL) The general methods are outlined in standard textbooks on the measure?- ment of river discharge. From the discharge measurements rating tables are prepared that give the discharge for any stage. The application of the daily gage height to these rating tables, gives the daily discharge from which the monthly and yearly mean discharge is determined. The data presented for each gaging station, in the area covered by. this report comprise a description of the station, a table giving results of discharge measurements, a table showing the daily discharge of the stream, and a table of monthly and yearly discharge and run-off. If the base data are insufficient to determine the daily discharge tables giving daily gage height and results of discharge measure ments are published, i The description of the, station gives, in addition to statements regarding location and equipment, information in regard to any conditions that may affect the permanence of the stage-discharge lelar tion, covering such subjects as the occurrence of ice, the use of the stream for log driving, shifting of control, and the cause and effect .of backwater, > it gives also information as to .diversions, that * .decrease the flow at the gage, artificial regulation, maximum and ^minimum recorded stages, and tha accuracy of the -records. : , u The table* of daily discharge gives, in general, the discharge in second-feet corresponding to the mean of the gage heights- fead day. At stations on streams subject to sudden or rapid diurna fluctuation the discharge obtained from the rating table and mean daily gage height may not be the true mean discharge for the day. If such stations are equipped with water-stage recorders the mean daily discharge may be obtained by averaging quantities of discharge for regular intervals during the day, or by means of a discharge integrator, an instrument operating on the principle of the planimeter and containing as an essential element the rating curve of the station. In the table of monthly discharge the column headed "Maximum" gives the mean flow for the day when the mean gage height was high est. As the gage height is the mean for the day it does not indicate correctly the stage when the water surf ace was at crest height, and the corresponding discharge was consequently larger than given in the maximum column. Likewise, in the column headed "Minimum" the quantity given is the mean flow for the day when the mean gage height was lowest. The column headed "Mean" is the average flow in cubic feet per second during the month. On this average flow computations recorded in the remaining columns, which are defined on pages 2 and 3, are based. ACCURACY OF FIELD DATA AND COMPUTED RESULTS The -accuracy of stream-flow data depends primarily (1) on the permanence of the stage-discharge relation and (2) on the accuracy of observation of stage, measurement of flow, and interpretation of records. 'A paragraph in the description of the station gives information regarding the (1) permanence of the stage-discharge relation, (2) pre cision with which the discharge rating curve is defined, (3) refinement of gage readings, (4) frequency of gage readings, and (5) methods of applying the daily gage height to the rating table to obtain the daily discharge. 'For the rating tables "well defined" indicates, in general, that the rating is probably accurate within 5 per cent; "fairly well defined," within 10 per cent; "poorly defined," within 15 to 25 per cent. These notes are very general and are based on the plotting of the individual measurements with reference to the mean rating curve. The monthly means for any station may represent with high accu racy the quantity of water flowing past the gage, but the figures showing discharge per square mile and run-off in inches may be subject to gross errors caused by the inclusion of large noncon- tributing districts in the measured drainage area, by lack of infor mation concerning water diverted for irrigation or other use, or by inability to interpret the effect of artificial regulation of the flow of the river above the station. "Second-feet per square mile" and "run-off in inches" are therefore not commuted if such errors appear PUBLICATIONS 0 probable. The computations are also omitted for stations on streams draining areas in which the annual rainfall is less than 20 inches. All figures representing "second-feet per square mile"-and "run-off in inches" previously published by the Survey should be used with caution because of possible inherent sources of error not known to the Survey. Many gaging stations on streams in the irrigated sections of the United States are located above most of the diversions from those streams, and the discharge recorded does not show the water supply available for further development, as prior appropriations below the station must first be satisfied. To give an idea of the amount of prior appropriations, a paragraph on diversions is presented in each station description. The figures given can not be considered exact but represent the best information available. The table of monthly discharge gives only a general idea of the flow at the station and should not be used for other than preliminary estimates; the tables of daily discharge allow more detailed studies of the variation in flow. It should be borne in mind, however, that the observations in each succeeding year may be expected to throw new light on data previously published. [, PUBLICATIONS Investigation of water resources by the Unitedi States Geological Survey has consisted in large part of measurements of the volume of flow of streams and studies of the conditions affecting that flow, but it has comprised also investigation of such closely allied subjects as irrigation, water storage, water powers, underground waters, and quality of waters. Most of the results of these "investigations have been published in the series of water-supply papers, but some have appeared in the bulletins, professional papers, monographs, and annual reports. - The results of stream-flow measurements are now published annually hi 12 parts, each part covering an area whose boundaries coincide with natural drainage features as indicated (below: PART I. North Atlantic slope basins; II. South Atlantic slope and eastern Gulf of Mexico basins. III. Ohio River basin. IV. St. Lawrence River basin. V. Upper Mississippi River and Hudson Bay basins. « VI, Missouri River bajsiri. , ^ r VII. Lower Mississippi River basin. VIII. Western Gulf of Mexico basins. IX. Colorado River basin. - kr' X. .Great Basin. XI. Pacific slope basins in California. ; 6 SURFACE WATER SUPPLY, 1921, PAET XII B PAET XII. North Pacific slope basins; in three volumes: A. Pacific slope basins in Washington and upper Columbia River basin. B. Snake River basin. C. Lower Columbia River basin and Pacific slope basins in Oregon.. Water-supply papers and other publications of the United States Geological Survey containing data in regard to the water resources of the United States may be obtained or consulted as indicated below: 1. Copies may be obtained free of charge by applying to the Direc tor of, the Geological Survey, Washington, P. C. The edition printed for free distribution is, however, small and is soon exhausted. 2. Copies may be purchased at nominal cost from the Superin tendent of Documents, Government Printing Office, Washington, D. Cf , who will on application furnish lists giving prices. 3. Sets of the reports may be consulted in the libraries of the prin cipal cities in the United States. 4. Complete sets are available for consultation in the local offices of the water-resources branch of the Geological Survey, as follows: Boston, Mass., 2500 Customhouse. Albany, N. Y., 704 Journal Building. Trenton, N. J., State House. Asheville, N. C., 316 Jackson Building. Chattanooga, Tenn., 37 Municipal Building. Columbus, Ohio, Brown Hall, Ohio State University. Madison, Wis., c/o Railroad Commission of Wisconsin. Chicago, 111., 1404 Einiball Building. Ames) Iowa, State Highway Commission Building. ;, , Rolla, Mo., Rplla Building, School of Mines and Metallurgy. r Tppeka, Kans., 23 Federal Building. ! Austin, Tex., Capitol Building. ' Helena, Mont., 45-46 Federal Building. ; '^ Denver, Gblo., 403^ Post Office Building. ; , Tucson, Ariz., 210 Agricultural Building, University of Arizona. , , Salt Lake City, Utah, 313 Federal Building. ... rjioise, Idaho, 615 Idaho Building. 'Idaho Falls, Idaho, 228 Federal Building. [ Tacoma, Washi, 406 Federal Building. ' ' ' '' Portland, Oreg., 606 Post Office Building. San Francisco, Calif., 328 Customhouse. Los Angeles, Calif., 600 Federal Building. Honolulu, Hawaii, 25 Capitol Building. A list of the Geological Survey's publications may be obtained by applying to the Director of the United States G-eologicalr Survey > Washington, D. C. . . ! Stream-flow records have been obtained at about 5,200 points in the United States, and the data obtained have been published in the reports tabulated on the following page. PUBLICATIONS Stream-flow data in reports of the United States Geological Survey [A Annual Report; B= Bulletin; W-. Water-Supply Paper] Report Character of data Year 10th A, pt. 2..... llth A, pt. 2..... 1884 to September, 1890. 12th A, pt 2...... do...... 1884 to June|30,5l891. 13th A, pt. 3..... 1884 to Dec. 31, 1892. 14thA.pt. 2..... 1888 to Dec. 31, 1893. B131_ ._ 1893 arid 1894. 16th A, pt. 2... .. B 140...... Descriptions, measurements, gage heights, ratings, and monthly 1895. discharge (also many data covering earlier years). W 11...... 1896. 18th A, pt. 4..... Descriptions, measurements, ratings, and monthly discharge 1895 and 1896. (also similar data for some earlier years) . W15 ...... Descriptions, measurements, and gage heights, eastern United 1897. States, eastern Mississippi River, and Missouri River above junction with Kansas. W16.. _ . , _ Descriptions, measurements, and gage heights, western Missis 1897. sippi River below junction of Missouri and Platte, and western United States. 19th A, pt. 4 . Descriptions, measurements, ratings, and moathly discharge 1897. (also some long-time records). W 2t...... Measurements, ratings, and gage heights, eastern United States, 1898. eastern Mississippi River, and Missouri River. W 28...... Measurements, ratings, and gage heights, Arkansas River and 1898. western United States. 20th A, pt. 4..... 1898. W35to 39- . 1899. 21st A, pt. 4..... 1899. W 47 to 52 _ ... 1900. 22dA.pt. 4...... 1900. W 65,86 ...... 1901. W75...... 1901. W 82 to 85 ...... 1902. W97tolOO 1903. W 124 to 135...... do ...... ^ 1904. W 165 to 178..... 1905. W201to214_.__ _ 1906. W241to252...... do ...... ^...... 1907-8. W 261 to 272..... 1909. W 281 to 292...... do . - . 1910. W 301 to 312 .. 1911. W 321 to 332..... do ... . - . 1912. W 351 to 362..... (J0 ..... 1913. W 381 to 394...... do . . 1914. W 401 to 414..... do ..-...... 1915. W 431 to 444. _ . 1916. TIT AK-l +n AftA 1917. W471to484_._ .. 1918. W 501 to 514...... do - _. - - 1919-2& W 521 to 534...... do. __ - __ _ ...... -- 1921. NOTE, No data regarding stream flow are given in the 15th and 17th annual reports. The records at most of the stations discussed in these reports ex tend over a series of years, and miscellaneous measurements at many points other than regular gaging stations have been made each year. An index of the reports containing records obtained prior to 1904 has been published in Water-Supply Paper 119. The following table gives, by years and drainage basin, the num bers of papers on surface-water supply published from 1899 to 1921. The data for any particular station will be found in the reports cov ering the years during which the station was maintained. For example, data for 1902 to 1921 for any station in the area covered by Part III are published in Water-Supply Papers 83, 98, 128,169, 205, 243, 263, 283, 303, 323,353,383, 403, 433, 453, 473, 503, and 523, which contain records for the Ohio River basin for those years. Results of miscellaneous measurements are published by drainage basins. Numbers of water-supply papers containing results of stream measurements, 1899-1921 00 I II III IV V VI VII VIII IX X XI XII South North Pacific slope basins North Atlantic Hudson Atlantic and east St. Bay and Lower Pacific Pacific Lower slope ern Gulf Ohio Lawrence upper Missouri Missis-, Western Colorado slope slope Columbia. of Mexico River and Missis -. Gulf of Great basins basins in Year (St. John basins River Great River sippi Mexico River Basin Washing Snake River and Elver to (James basin Lakes sippi basin River basins. basin in Cali ton and River Pacific . York River to basin River basin fornia upper basin slope Kiver) . the Missis- basin Columbia basins in - sippi) ' River Oregon ; 189»o-.....-: 35 635,36 36- 36 36 c 36, 37 37 37 <*37,38 38, « 39 38,/39 38 38 38 1900>___._ ' : 47, ft 48 48 .48, i 49 49 49 49, ) 50 50 50 50 51 51 51 51 51 1901".,...... ' - 65. 75 65,75 65,75 65,75 * 65. 66, 75 66,75 * 65, 66, 75 66,75 66,75 66,75 66,75 66,75 66,75 66,75 1902. ___. _ 82 682,83 83 *82,83 *83,85 84 *83,84 84 85 85 85 85 85 86 1903 ____ _ - 97 697,98 98 97 *98, 99, m 100 99 ^98,99 99 100 100 100 100 100 100 1904...-...J. * 124,» 125, P 126, 127 128 129 * 128, 130 130,9131 * 128, 131 132 133 133, r 134 134 135 135 135 P126 1905...... « 165, o 166, P 167, 168 169 170 171 172 * 169, 173 174 175, *177 176, r 177 177 178 178 ' 177, 178 P167 1906...... »201,°202, P203.204 205 206 207 208 * 205, 209 210 211 212, r 213 213 214 214 214 P203 1902-8...... 241 242 243 244 245 246 247 248 249 250, r 251 251 252 252 252 1909...... 261 262 263 264 265 266 267 268 269 270,'' 271 271 272 272 272 1910-- 281 2S2 283 284 285 286 287 288 289 290 291 292 292 292 1911 _ ..... 301 302 303 304 305 306 307 308 309 310 311 312 312 312 1912. 321 322 323 324 325 326 327 328 329 330 331 332A 332B 332C 1913 351 352 353 354 355 356 357 358 359 360 361 362A 362B 362C 1914 ,.... 381 v 382 ,383 384 385 386 387 388 389 390 391 392 393 394 1915 .;. 401 402 ;403 404 405 406 407 408 409 410 411 412 413 414 1916..- 431 432 433 434 435 436 437 438 439 440 441 442. 443 444 1917 451 452 453 454 455 456 457 458 459 460 461 462 463 464 1918... ,-: 471 472 .473 474 475 476 477 478 479 480 481 482 483 484 1919-20 501 502 503 504 * 505 506 507 508 509 510 511 512 513 514 1921 521 522 . 523 524 525 526 627 528 529 530 531 532 533 534 RatingrtabTes and index to Water-Supply Papers 35-39 contained in Water-Supply / Loup and Platte rivers near Columbus, Nebr., and all tributaries below junction Paper 39. Tajjlesof monthly discharge for 1899 in Twenty-first Annual Report, Part IV. withPlatte. 6;James l$iver only. . " . - * Tributaries of Mississippi from east. e-GaHatfij River: : i Lake Ontario and tributaries to St. Lawrence River. tf'Green ani Gunnison rivers aad Grand River above Junction with Gunnison. m Hudson Bay only. iMohave Rivec onfy...... » New England rivers only. £Kingsi|nd;l£em rivers and south Pacific slope basins. o Hudson River to Delaware River, inclusive. « Ralinriables and index to Water-Supply Papers 47-52 and data on precipitation, p Susquehanna River to Yadkin River, inclusive. weBs, 8nd irrigation iir California and Utah contained in Water-Supply Paper 52. Tables 9 Platte and Kansas rivers. ofmofithly discharge for ITMOin Twenty-second Annual Report, Part IV. r Great Basin in California except Truckee and Carson river basins. ickon and ' Schuylkill rivers to James River. » Below Junction with Gila * Rogue, Umpqua, and Siletz rivers only. StTEFACB WAT&B SUPPLY, 1921, PART XII-HB ' 'i 1 --' COOPERATION - '.:> ; . . During tjie. year, ending, September 30, 19^1,, work ,in. River basjn was carried on. in,cooperation with tjie States pf da Oregon, Nevada, and Washington, .effected, un The data for stations on Snake River at Riparia, Wash., Salmon River at Whitebird, Idaho, and Clearwater River at Kamiah, Idaho, were collected and prepared for publication under the direction of 0. L. Parker, district engineer, assisted by D'. J. Calkins, R. B. Kilgore, John McCombs, and C. C. Osborne. The manuscript was reviewed and assembled by J. J. Dirzulaitis. GAGING-STATION RECORDS SNAKE RIVER AT SOUTH BOUNDARY OF YELLOWSTONE NATIONAL PARK LOCATION. A quarter of a mile below junction of Lewis and Snake rivers, half a mile north of Snake River soldier station and south boundary of Yellowstone National P;ark, and 25 miles north of Moran, Wyo. DRAINAGE AREA. 490 square miles (measured on topographic maps). RECORDS AVAILABLE. June 19,1913, to September 24,1921. GAGE. Overhanging chain gage on right bank used December 1,1920, to June 27, 1921; read by W. N. Purdue. Stevens eight-day water-stage recorder used July 20 to September 24,1921. Auxiliary chain gage on bridge about 2 J^ miles downstream used August 4 to September 2 and September 4-14,1918, and July 25 to September 1 and September 3 and 4,1920, and June 28 to July 19,1921; read by Sheffield and Elder. DISCHARGE MEASUREMENTS. Made from cable 225 feet below gage or by wading. CHANNEL AND CONTROL. Bed composed of coarse gravel; clean except for occa sional lodgment of drift: Control probably permanent at ordinary stages. One channel at gage but divided by an island into two channels at control. Conditions at auxiliary .location similar .except that the stream-is in one channel at all stages. EXTREMES OF DISCHARGE. Maximum stage recorded during period December 1,1920, to September 24,1921, 6.5 feet at 8 p. m. on May 28 (discharge, 5,580 second-feet),; minimum stage record, 2.0 feet February 24 to March 5 (dis charge, 287 second-feet). 1913-1921: Maximum discharge, 5,690 second-feet June 2,1914; minimum stage recorded, 1.4 feet October 26-31,1915 (discharge, 160 second-feet). ICE. Stage-discharge relation not affected by ice, formation of which is evidently prevented by hot springs above the gage. DIVERSIONS. None above station. REGULATION. None. ACCURACY. Stage-discharge relation not permanent. Standard rating curve well defined. Two parallel curves used; rating curve for auxiliary gage fairly well defined. Operation of water-stage recorder satisfactory July 20 to September 24. Gage read to half-tenths once daily. Daily discharge obtained by applying daily gage height to rating tables except as noted in footnote to daily-discharge table. Records fair. COOPERATION. Gage-height record furnished by superintendent of Yellowstone National Park and by the United States Bureau of Reclamation. SNAKE BIVEB Discharge measurements of Snake River at south boundary of Yettowstone National! Park during the period Dec, 1, 1920, to Sept. 24,1921 Gage Dis Oage Date Made by height Oage Date Made by height Qage Dis bridge 6 height charge bridge 6 height charge Feet Sec.-ft. Feet Sec.-ft. June 14 T. R. Newell.j... 8.02 5.38 3,570 Aug. 11 C. C. Elder...... 2.93 2.33 . 398 27 C. C. Elder* __ 4.47 4.01 1,510 Sept. 17 Markhamo and July 1 ..do..... __ 4.11 3.60 1,160 Elder... 2.75 2.07. 329 23 .....do...... 3.23 2.64 565 o Employees of United States Bureau of Reclamation. & Bridge gage is an auxiliary chain gage on bridge about 2Ms miles downstream. Daily discharge, in second-feet, of Snake River at south boundary of Yellowstone National Park for the period Dec. 1, 1920, to Sept. 24, 1921 Day Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1...... 326 347 368 287 326 744 3,640 1,250 471 340 2... __ ...... __ . 326 347 368 287 326 1,080 4,150 1,250 490 364 3 _ ...... 326 368 368 287 347 1,410 4,320 1,150 476 44S 4...... _ . 326 364 368 287 347 1,740 4,320 1,060 435 448 326 361 368 287 326 1,980 . 4,320 1,020 418 39S 6...... 326 357 368 306 326 1,860 4,320 936 414 371 7- ...... 326 ' 354 368 306 306 1,980 5,310 896 410 368- 8...... 326 350 368 306 306 1,860 4,320 820 402 360* 9...... __ ...... 326 347 354 306 326 1,860 4,860 784 402 382 10 .. __ . 347 347 340 306 347 1,740 5,040 820 398 41» 11 ...... 396 347 326 306 347 1,860 4,860 820 394 402 12 ...... 401 368 326 306 347 1,980 4,860 820 386 394 13 ..- 412 368 326 306 347 2,660 4,320 716 382 375. 14- __ ..-.. - 368 368 306 306 368 3,130 3,980 716 382 364 15 ...... 368 368 306 306 390 3,130 3,620 622 386 35$ 306' 16...... 347 368 306 434 3,470 3,260 622 394 34ft 17... _ ...... 368 368 306 306 412 3,470 2,930 622 382 330 18.. _ . .. _ 368 368 306 326 434 3,470 2,450 622 375 324 10 368 368 306 326 ifiS 3,130 2,440 566 364 357 20 368 368 306 326 434 2,810 2,280 572 360 386 21...... 361 368 306 306 434 3,470 2,280 661 353 364 22.. _ . _ . _ ...... 354 347 306 306 458 3,470 2,270 550 343 360 23 347 368 306 306 434 3,470 2,130 524 340 353 24 .. . _ .... 347 368 287 306 412 3,810 1,990 504 390 34» 25. ____ ...... «U7= 368 287 306 434 3,900 1,860 556 394 26...... ,. .. 326 368 287 306 412 3,980 1,680 530 360 27 ___ . . 326 368 287 306 412 5,220 1,500 504 357 28 326 36S 287 306 412 5,580 1,450 495 360 29 . 347 " ' -368 306 412 5,040 1,300 485 364 30 368 306 412 4,500 1,250 471 353 31 .- 347 368 306 3,980 466 346 NOTE.->-NO record obtained Oct. 1 to Nov. 30 and Sept. 25-30. Discharge interpolated because of lack of gage heights, Dee. 12, 21,22, Jan. 4-8,16-17, Feb. 9,10, May 1-3, and 25. Record June 28 to Sept. 24 from auxiliary gage 2J-£ miles downstream. 12 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of Snake River at south boundary of Yellowstone National Park for the period Dec. 1, 1920, to Sept. 24, Discharge in second-feet Run-offin Month acre-feet Maximum Minimum Mean 412 326 349 21,500 368 347 362 22,300 368 287 325 18,000 326 287 305 18,800 458 306 383 22,800 5,580 744 2,960 182,000 June . ., . 5,310 1,250 3,240 193,000 July...... 1,250 466 720 44,300 August ___ . __ . ______490 340 390 24,000 448 324 373 17,800 564,000 JACKSON LAKE AT MORAN, WYO. LOCATION. In sec. 18, T. 45 N., R. 114 W., a short distance above gates at outlet of lake at Moran, Teton County. RECORDS AVAILABLE. June 1,1909, to September 30, 1921, Records for years 1909 and 1910 fragmentary. GAGE. Inclined staff on right shore just below engineers' cottage; read by Joseph Markham. Zero of.gage, 6,700 feet above sea level. COOPERATION.-^ Gage-height record and table showing storage capacity of lake furnished by United States Bureau of Reclamation. Jackson Lake impounds water for the irrigation of lands in the Minidoka and Twin Falls tracts. It has a capacity 847,000 acre-feet between the elevations 6,730 and 6,769 feet, sea-level datum. Daily contents, in acre'feet, of Jackson Lake at Moran, Wyo.,for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 144,240 iss^gio 215,400 248,210 280,260 303,110 326,480 360,660 654,220 846,460 455,780 168,880 2...... 145, 780 184,700 216,400 249,450 281,520 303,960 327,120 363,950 666,080 844,930 437,360 164,590 3i ...... 147, 120 185,500 217,210 250,690 282, 770 304,810 327,990 367,240 667,500 837, 810 419,540 160,730 4:...... 148,270 186,290 218, 010 251, 930 283,820 305,660 328,860 370,530 691, 150 832, 210 406,990 158,240 5- ...... 149,420 186,880 218, 820 253, 170 284, 870 306,520 329,720 374, 070 707,320 826, 610 394,240 156, 320 6 _ ...... 150,570 187,480 219, 620 254,410 285, 720 307,160 330,590 380,720 722,050 821, 020 383, 380 154,410 7 _ ...... 151,720 188,270 220,630 255,650 286,570 f307,810 331,460 387,360 737,140 813,950 372,300 153,060 8- - ... 153,060 189,060 221,830 256,890 287,420 308,450 332, 330 394,020 752,510 805,360 361,320 151, 720 9 154,410 189, 850 223,050 257,920 288,060 309,090 333,200 400, 730 769,940 797,020 350,140 151,340 10- __ ... _ .. 155,750 190,640 224,270 258, 750 288,690 309,740 334,060 406,320 785,. 480 788,490 339,060 152,300 11 ___ ...... 157, 090 191,440 225,490 259, 370 289, 330 310,380 334,930 413,020 801,320 776, 950 328,640 152, 300 12.. _ ...... 158,240 192, 230 226, 510 260,200 290,180 311,020 335,800 419, 770 818,240 764, 710 317, 890 152, 300 13: .... - _ 159, 390 193,020 227,330 261,020 290,810 311, 670 336, 670 426,990 832,980 750,270 307,380 152,490 14 _ .'..:.ii'..-'i.-j 160,540 193, 810 228, 150 261,850 291,660 312, 530 337,750 434,880 839, £40 736,400 297^600 153,640 15- __ ...... 161, 690 194,800 228,960 262,680 292,300 313, 390 338,840 444,640 845,190 723,290 287,630 154,980 16- __ ...... 162, 840 195, 790 229,780 263,500 292, 930 314,240 340,140 456, 010 846,460 709,280 277,540 155,750 17 _ ..... 164,200 196, 980 230,590 264,550 293,780 315, 100 341,440 466,970 846,460 693,350 267,070 156,520 18- . 165, 370 198, 370 231, 410 265,600 294, 630 315, 960 342,740 479, 570 847,000 677,500 257, 720 157,280 19... _ ...... 166, 740 199, 950 232,430 266,860 295,480 316, 820 344,050 490,390 847,000 662, 450 250,890 158, 240 20... _ ...... 168, 100 201,540 233,450 268,110 296,330 317, 680 345, 350 499,630 847,000 648,400 241, 810 159, 970 21. ___ ...... 169, 270 202,530 234,470 269,370 297,180 318,540 347,080 508,870 847,000 633,980 234,880 161,500 22 ... 170, 440 203, 740 235,490 270,420 298,020 319, 390 348,820 518, 870 847,000 618, 620 228,350 162, 080 23. .. 171, 610 205,140 236, 710 271, 460 298, 660 320,250 350, 570 528,860 847,000 604,530 221, 030 163,420 24. ___ ... __ . 173, 170 206,350 237,940 272, 510 299,300 321, 110 351, 890 540,090 847,230 588,140 214, 190 164,400 25. ___ ...... 174, 730 207,760 239, 160 273,560 300,150 321, 970 353, 210 551, 790 847,230 572, 740 207,760 165, 370 26. ___ ...... 176,290 208,960 240,380 274,610 300,990 322, 830 354,520 564,500 847,000 557,900 200,940 166, 350 97 177,850 210, 370 241, 810 275, 650 301,630 323, 470 355,840 579, 120 847,000 542, 430 194, 410 167, 520 28... _ ..... 211, 780 243,240 276, 490 302, 270 324, 120 357, 150 594,540 847,000 525, 370 188,270 168, 690 29. 180,580 212, 990 244,480 277, 750 324,760 358, 030 611, 700 847,000 508,410 182,520 169, 470 30... _ ...... 181, 940 214, 390 245,720 278,590 325, 190 359, 350 627, 960 846,720 491, 090 177, 850 170, 250 31. ... 183, 120 246, 960 279,420 '325. 830 642,390 472, 700 173, 560 SNAKE EIYEB - ' \ ''SNAKE RIVER NEAR MORAN, WYO. '.O, LOCATION. In sec. 17, T. 45 N., R. 114 W., l^Hj miles below Moran post office* Teton County, and United States Bureau of Reclamation dam at outlet of Jackson Lake. No important tributaries between dam and station. DRAINAGE AR,EA,. 820 square miles. RECORDS AVAILABLE. September 21, 1903, to September 30, 1921. GAGE. Vertical' staff in two sections on left bank. Datum lowered 1.0 foot July 26, 1915. Stevens water-stage recorder installed June 14, 1917, on bank to rear of staff gage. Gage read by employees of United States Bureau of Reclamation. For gages used see Water-Supply Paper 513. DISCHARGE SJ:BASTJRE!MENTS. Made from cable about 100 feet below gage or by wading. CHANNEL AND CONTROL. -Bed of gravel and boulders. Control practically per manent. ' EXTREMES OF ; DISCHARGE. Maximum stage recorded during year, 8.77 feet at 11 p. m. on July 31 (discharge, 10,900 second-feet); minimum stage recorded, 0.22 foo;t October 1 to February 21 (discharge, 12 second-feet). 1903-1921: Maximum stage recorded, 10.41 feet at 8 p. m. June 12,1918 (discharge, 15,100 second-feet); practically no flow during a few days in 1907 and 1909 as a result of closing of gates in Jackson Lake dam. ICE. Stage-discharge relation affected by ice. Gates in dam at Jackson Lake auer closed during winter.; Flow past gage represents leakage through dam and inflow from springs. DIVERSIONS. -Jfone betw/een dam and station and practically none above Jack son Lake. .. REGULATION, Flow controlled by Operation of gates in Jackson Lake damj Storage capacity of reservoir, 847,000 acre-feet. ACCURACY. Stage-discharge, relation changed during winter period, affected by ice February 22-27. Rating curves used before and after change well defined above 25 second-feet. Gage read to hundredths once daily October 1 to May 31. Operation of water-stage recorder satisfactory for rest of year . Daily discharge obtained by applying to rating tables staff readings or mean daily gage height ascertained from inspection of recorder graph, except February 22-27 when it was interpolated. Records good April to Septem ber and fair October to March. COOPERATION. Gage-height records and 10 discharge measurements, furnished by United States Bureau of Reclamation. Discharge measurements of Snake River near Moran, Wyo. t during the year endinff Sept. SO, 1921 . :i Gage Dis Gage Dis-v Date Made by height charge Date Made by height charge i Feet Sec.-ft. Feet Sec,-rftr. 0.59 60 July 17 C. C. Elder...... 8.48 10,300 13 .. do:...... 2.30 793 30 do . .... 8.. 66 10,700 13 ..-.do-...... -. 5.30 4,210 Aug. 4 .....do...... 7.18 7,550 1 *\ . ....do...... A. ion 1Q do ...... 5.52 4,500 16 6.60 , "29,480 980* . ; 29 490 3,510 28 C. C. Elder- .. 4.54 C. C. Elder...... 2.87 1,250 July 11 7.50 8,420 10 do...... 2.20 713 13 C. C. Elder. T._-t .H 1 Employees of the United States Bureau of Reclamation. 14 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Snake River near Ma^an,^Wyo.,for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. I. __ - __ 12 12 12 12 12 16 19 40 45 2,570 10,900 2,760 2. .. _ 12 12 12 12 12 16 19 A 60 42 4,740 10, aoo 2,620 3 12 12 12 12 12 16 18 '7160 41 5,590 9,100 2,540 4 -...- . 12 12 12 12 12 16 19 46 4,630 7,530 2,229 5 12 12 12 12 12 16 19 74 56 4210 6,960 1,610 6...... 12 12 12 12 12 16 19 89 60 5,270 6,520 1,260 7...... ,. 12 12 12 12 12 16 19 64 62 6,080 6,620 1,250 8 12 12 12 12 12 16 19 57 ; 60 6,010 fl,680 1,190 9... _ 12 12 12 12 12 16 19 52 62 6,374, 6,620 538 10 ...... 12 12 12 12 12 16 21 50 62 7,43ff 6, 430 616 11. ....,-.. 12 12 12 12 12 16 22 , 45 58 8,240 6,280 822 12...... 12 12 12 12 12 16 26 ;42 67 8, 890 6,350 488 13 ...... 12 12 12 12 12 16 28 40 2,280 9, 580 6,200 31 14 . 12 12 12 12 12 16 30 37 4,450 9,230 6,200 28 15... _ ...... 12 12 12 12 12 16 35 37 4,880 8,>940 6,240 27 16...... 12 12 '1212 12 12 16 35 37 6,200 9,620 6,240 26 17...... 12 12 12 12 16 32 37 4,920. 10,300 5,920 26 18 12 12 12 12 12 16 32 37 4,130 9,490 5,430 26 Ifl. . '. . 12 12 12 12 12 16 35 37 3,930 9,320 4,580 27 20...... 12 12 12 12 12 16 35 37 3,320 9,290 4,550 30 21 j 12 12 12 12 12 16 35 37 3,880 9,270 4150 28 22.. J 12 12 12 12 13 16 35 40 3,660 9,270 4,290 26 28 12 12 12 12 13 16 35 40 3,680 9,470 4,230 25 24 12 12 12 12 14 16 35 42 3,900 9,510, 4130 25 25 . 12 12 12 12 14 16 35 42 4,200 9,4tO 4,240 24 26 12 12 12 12 15 16 35 42 3,210 9, 490 4180 24 W, 12 12 12 12 15 . 16 35 42 2,840 9, 910 4,160 24 28 12 12 12 12 16 18 37 42 3,100 10,000 3,820 24 29 . 12 12 12 12 18 37 48 3,580 10, 100' 3,430 22 30-. . 12 12 12 12 19 37 48 2,890 10,700 2, 970 22 31 12 12 12 19 48 10,700 2, 760 No' 'B. Stage-discharge relation affected by ice Feb. 22-27; gates in dam at Jackson Lake remained closed and d illy discharge during period interpolated. Mon thly discharge of Snake River near Moran, Wyo., for the year ending Sept. SO, 1921 Discharge in second-feet Run-off Month in acre-feet Maximum Minimum Mean 12 12 12 738 12 12 12 714 12 12 12 738 12 12 12 738 16 12 12.6 70Q 19 16 16.3 1,000 April.. __ .. _ .... _ _ ...... -.....-- 37 19 28.6 1,700 74 37 46.6 2,870 6,200 41 2,320 138,000 July-. - 10,700 2,570 8,180 503,000 10,900 2,760 5,750 354000 September. , . . . 2,760 22 613 36,500 10,900 12 1,440 1,040,000 SHAKE RIVER HEAR HEISE, IDAHO i LOCATION. In sec. 5, T. 3 N., R. 41 E., 600 feet above Anderson dam, in Bonne- ville County, 3 miles above Heise, Jefferson County, and 25 miles below site of station formerly maintained near Lyon. Several small creeks enter between old site and present station. DRAINAGE ABEA. Not measured. SNAKE RTVEB 15 RECORDS AVAILABLE. September 25,1910, to September 30, 1921. GAGE. Friez water-stage recorder on left bank; installed July 8, 1913, and referred to combined vertical and inclined staff gage which was used prior to that date. Gage inspected by W. J. Kremer and Lena Byington. DISCHARGE MEASUREMENTS. Made from cable about 300 feet below gage. CHANNEL AND CONTROL. Bed composed of rock ledge, coarse gravel, and cobble stones. One channel at all stages. Control formed by the Anderson dam, parts of which washed out during the high-water periods of 1917 and 1918. EXTREMES OF DISCHARGE. Maximum stage recorded during period April 4 to September 30, 6.91 feet at 5 p. m. on June 14 (discharge, 34,000 second- feet) ; minimum stage recorded, 0.34 foot at 2 a. m. on September 30 (dis charge, 3,550 second-feet). 1910-1921: Maximum discharge, about 52,000 second-feet, June 16,1918; minimum discharge, 2,180 second-feet, March 10, 1915. ICE.-' Stage-discharge relation seriously affected by ice. Observations discon tinued during winter. DIVERSIONS. No large diversions above station. A small ditch of about 25 second-foot capacity diverts water just above station. REGULATION. Flow controlled to a large extent by storage in Jackson Lake reservoir. ACCURACY. Stage-discharge relation permanent during period. Rating curve well defined below 26,000 second-feet. Operation of water-stage recorder satisfactory except during short period April 6-9. Daily discharge obtained by applying to rating tables mean daily gage height determined by inspec tion of recorder graph. Records good. Discharge measurements of Snake River near Heise, Idaho, during the period Apr. 4 to Sept. 80,1921 Gage Dis Oage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet See.-ft. Apr. 4 C. A. McClelland ..... 0.72 4,490 T. R. Newell _____ 3.21 12,600 May 13 T. R. Newell...... 3.80 15,300 .....do ...... __ 1.68 7,150 June 18 . .do...... ___ .... 5.71 25,600 23 .... .do. -T ... . .47 3,840 July 8 -.-.do...... 3.63 14,500 Daily discharge, in second-feet, of Snake River near Hetse, Idaho, for the period Apr. 4 to Sept. SO, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June,, July Aug. Sept. 1...... 6,430 24,200 15,600 16,400 7,020 16 6,010 18,400 31,200 16,600 11,200 4,130 2...... 7,980 21,800 14,200 16,400 7,020 17...... 6,290 20,600 30,600 17, 100 11,000 4,020 3...... 9,780 20,100 15,600 16,100 7,020 18. 6,580 21,200 26,700 17,600 10,600 3,900 4...... 4,480 11,000 20,400 15, 900 14, 700 7,330 19 7,020 20,600 22,700 17,100 9,780 4,020 5.... 5,090 13,500 21,800 14,000 12, 600 6,870 20 . 7,020 i« 9inn 20,600 16, 400 9,030 4,020 6__..._. 5,340 14,700 23,000 12,800 12,200 6,150 21 6,720 16,400 18,400 16,400 4,030 4,020 7 ...... 4,720 15,400 24,800 13,800 11,600 5,740 22...... 6,430 16,400 18, 400 16, 100 8,500 3,900 8 .... 4,240 15,600 26,300 14,700 11,400 5,470 23 7 330 16,900 18,700 15,900 8,670 3,900 9...... 4,020 14,400 28,300 14,400 11,600 5,470 24...... 7,180 18,400 19,200 15,600 8,670 3,790 10...... NOTE. No record obtained Oct. 1,1920, to Apr. 3, 1921. 16 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of Snake River near Heise, Idaho, for the period Apr. 4 to Sept, 30, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 7,330 3,900 5,620 301,000- May. ... . ______.. 26,000 6,430 17,200 1,060,000 33,300 16,400 23,600 1,400,(X» July . ... 17,900 12, 800 15,800 972,000- 16,400 7,180 10,800 664,000= 7,330 3,580 4,830 287,000- The period _ . ______- __ 4, 680, 000- DIVERSIONS FROM SNAKE RIVER BETWEEN HEISE AND SHELLEY GAGING STATIONS, IDAHO Between Heise and Shelley gaging stations 47 separate canals divert water from Snake River for irrigation. More than one-third of these head in the Great Feeder, an old channel of the river, which has been equipped with head gates. Gaging stations are maintained at heading of each canal by the United States Geological Survey for the Idaho State Department of Reclamation to facilitate- distribution of the water. Records are available from June 1, 1919, to Septem ber 30, 1921. Stage-discharge relation on most of the canals affected by growth of aquatic- plants or by operation of check gates. Rating curves well defined. Gages read to hundredths daily except during September, when occasional readings were made. Records good. Combined daily discharge, in second-feet, of canals diverting from Snake River be tween Heise and Shelley gaging stations for the irrigation season of 1921 Day June July Aug. Sept. Day June July Aug. Sept. 1... _ .... . 2,610 8,710 7 7«;n 5,130 16...... _ . 8,340 7,640 6,030 3,570- 2... _ ...... 7 640 7,720 5,080 17...... 8,380 7,630 6,090 3,510- 3... _ ... _ ... 2,910 7,540 7,200 4 Q£A 18..- . 8,450 7,760 6,200 3,360- 4. ___ ...... 0 Q7A 7,700 6,890 4,840 19 . 7,850 7,690 5,980 3,450 5-...... 2,970 7 «;4n 6 540 4,710 20 8,070 7,630 5,820 3,44tt 6...... 3,070 7 0QA 6 640 4,630 21 7,960 7,620 6,000 3,370> 7.. __ ...... 3,210 7 540 6, 390 4 290 22 8,580 7,590 5,930 3,190 8... _ ..... 3,660 7,680 6 aQfi 4,230 23.. - __ . 9,020 7,560 5,890 3,040 9 ___ ...... 4,040 7,610 7,160 4,150 24 9,280 7,080 5,880 2,93O 10-... _ ... 4,430 7,480 7,170 4,020 25 9,340 6,900 5,980 2,940 11 _ . ... '5,280 7,660 7 ion q con 26 9,580 6,850 5,890 2,940" 12..... __ . 5,420 7 540 7,040 3,750 27 . 9,200 6,900 5,890 2,950 13 .. .. 6,510 7,610 6 con 4 finn 28 - 9,150 7,540 5,660 2,92* 14 ...... _ . 7,500 7,680 6,480 3,560 29- , 9,340 7,670 5,420 2,890- 15...... ,. .. O Ann 7,660 6,010 3 AAA 30.- ...... 9,490 7,630 6,410 2,830» 31 7,690 5,170 NOTE. No record obtained Oct.l to May 31. Discharge interpolated for days of no gage-height record during September; 37 diversions are above entrance of Henrys Fork and 10 are below. SNAKE EIVEE Combined monthly discharge of canals diverting from Snake River between the Heise and Shelley gaging stations for the irrigation season of 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 9,580 2,560 6,570 391,000 July 8,710 6,850 7,560 465, 0DO 7,750 5,170 6,360 391,000 5,130 2,830 3,730 222,000 The period ______. _____ . __ 1,470,000 NOTE. Riley canal doss not divert in this section and is not included in summary. SNAKE RIVER NEAR SHELLEY, IDAHO LOCATION. In sec. 17, T. 1 N., R. 37 E., a quarter of a mile above Woodville highway bridge and 3 miles north of Shelley, Bingham County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. March 18, 1915, to September 30, 1921. GAGE. Friez water-stage recorder on right bank, standard hook gage in float well, and combination vertical and inclined staff gage outside. Observe rs> James Thorne and C. A. McCurdy. DISCHARGE MEASUREMENTS. Made from cable 600 feet above gage or by wading, CHANNEL AND CONTROL. Control formed by Java-rock reef extending across 1 channel about 500 feet below gage. Banks high and clean at gage and con trol. EXTREMES OP DISCHARGE. Maximum stage recorded during period April 20 to September 30, 13.17 feet at 10 a. m. on June 1 (discharge, 30,400 second- feet); minimum stage recorded, 5.78 feet at noon on September 30 (dis charge, 2,850 second-feet). 1915-1921: Maximum stage recorded, 16.97 feet at 1.30p. m. on June 17, 1918 (discharge, 47,200 second-feet); minimum stage, 3.68 feet at 9.15 a. m. August 29, 1919 (discharge, 702 second-feet). ICE. Stage-discharge relation probably seriously affected by ice; observations discontinued during winter. DIVERSIONS. Practically the entire natural summer flow of the river above sta tion is appropriated by numerous diversions in the Idaho Falls district. REGULATION. Natural flow during the irrigation season is augmented by release of stored flood waters in Jackson Lake for use on the Minidoka project and Twin Falls tracts. ACCURACY.: Stage-discharge relation practically permanent. Rating ourve well defined. Operation of water-stage recorder satisfactory except April 20-27 and September 26-29. Daily discharge obtained by applying to rating table mean daily gage height determined by inspecting recorder graph, except April 21-23, for which it was interpolated. Records excellent. 18 SURFACE WATER SUPPLY, 1921, PART XII B Discharge measurements of Snake River near Shelley, Idaho, during the period Apr. 20 to Sept SO, 1921 [Made by T. R. Newell] Gage Dis Qage Dis Gage Dis Date height charge Date height charge Date height charge feet Sec.-ft. Feet Sec.-ft Feet Sec.-ft. Apr. 20..... 7 VI 7,810 1O KO 07 oftn Aug. 19 . 7 OA May 17 10.76 19,800 July 22 8.04 9,810 Sept. 22 . 6.05 3,410 Daily discharge, in second-feet, of Snake River near Shelley, Idaho, for the period Apr. 20 to Sept. SO, Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1. __ . 7,420 30,100 9,870 9,510 4,580 16...... 19,100 28,800 10,600 7..420 3,420 2. _ .. 8,280 29,600 9,510 9,870 4,440 17...... 20,300 27,000 10,200 7,260 3,240 3 10,200 27,900 9,510 10,200 4,300 18...... 22,000 25,700 10,600 7,260 3,170 4 _ 12,400 26,600 10, 600 10, 600 4,440 10 23,200 22,000 10,600 6,750 3,200 5 14,000 26,200 10,200 9,150 4,870 20 ... 7,930 23,600 18,700 10,200 6,420 3,220 6.. _ . 16,700 26,200 8,620 7,930 5,020 21. . 8,150 22,400 15,900 9,870 5,780 3,280 7... _ 18, 300 27,000 7,930 7,250 4,720 22...... 8,360 20,700 13^600 9,870 5,620 3,420 8...... 19, 100 27,500 8,280 6,580 4,440 23...... 8,580 20,300 12,400 9,510 5,170 3,300 9 ... 19,500 28,300 8,620 6,260 4,160 8,800 20,300 12,100 9,870 5,020 3,240 10 18,700 28,800 8,620 6,260 4,160 25 ... 8,460 21,500 12,100 10,200 5,170 3,170 11 _ 17,900 28,300 8,800 6,260 4,030 26 7,760 22,400 12,400 9,870 5,320 3,070 12 ...... 17,900 28,300 9,870 6,260 4,030 27...... 7,250 23,600 12,100 9,870 5,320 2,990 13...... 18,300 28,300 10,600 6,260 4,030 28 6,580 25, 700 10,600 9,330 5,620 2,910 14 ...... 17,900 28,300 11,000 6,580 4,030 29 ... 6,760 27,500 9,870 9,150 5.4TO 2,910 15. __ 18,300 28,800 11,300 7,250 3,650 30 6,920 29,600 9,870 9,150 5,320 2,870 31 30,100 9,330 5,020 NOTE. Mo record obtained Oct. 1 to Apr. 19. No gage-height record Apr. 21-23; discharge inter polated. Monthly discharge of Snake River near Shelley, Idaho, for the period Apr. 20 to Sept. 80, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean April 2 DIVERSIONS FROM SNAKE RIVER BETWEEN SHELLEY AND PORTERVILLE GAGING STATIONS, IDAHO Between the Shelley and Porterville gaging stations nine separate canals divert water from Snake River for irrigation. Gaging stations are maintained at head ing of each canal by United States Geological Survey for the Idaho State Depart ment of Reclamation to facilitate distribution of the water. Records are available from June 1, 1919, to September 30, 1921. Stage-discharge relation on most of the canals affected by growth of aquatic . plants or by operation of check gates. Rating curves well defined. Gages read to hundredths daily except during September, wTien occasional readings were made. Records good. SNAKE BIYEB, Combined daily discharge, in second-feet, of canals diverting from Snake River be tween Shelley and Porterville gaging stations for the irrigation season of Day June July Aug. Sept. Day June July Aug. Sept. 1 _ ...... 1..290 .2,800 2,600 1,660 16 ...... 2,740 2,730 1,920 1,300 2 ...... 1,300 2,730 2,340 1,640 17 ...... 2,810 2,760 1,890 1,250 3 -..... 1,260 2,700 2,430 1,630 18 2,800 2,830 1,870 1,250 4 __ .. ___ .. 1,270 2,780 2,570 1,610 19.. __ ...... 2,700 2,880 1,790 1,240 5 ... _ . _ . _ . 1,230 2,680 2,490 1,580 20 ...... 2,700 2,240 1, 770' 1,230 6. __ ...... 1,340 2,630 2,070 1,560 21...... 2,720 1,620 1,710 1,220 7...... 1,550 2,560 2,060 1,520 22...... :. 2,770 1,750 1,600 1,210 8...... 1,520 2,670 2,010 1,480 23 . 2,920 2,060 1,660 1,210 9...... 1,750 2,750 2,010 1,450 24.. 2,970 2,570 1,750 1,180 10...... 1,810 2,740 1,970 1,420 25 . 2,990 2,670 1,770 1,160 11...... 1,920 2,760 1,060 1,410 26...... 3,040 2,770 1,770 !,!&> 12 ...... ___ .. 2,090 2,850 2,010 1 dnn 27 ...... 2,920 2,950 1,780 1,110 13 ...... 2,150 2,870 2,010 1,390 28... 2,820 2,890 1,770 1,090 14...... 2,310 2,880 1,960 1,390 29 . 2,860 2,920 1,740 1,070 15...... 2,700 2,780 1,910 1,340 30 ...... 2,860 2,930 1,700 1,060 31 .-. 2,950 1,680 NOTE. No record obtained Oct. 1 to May 31; discharge interpolated for days of no gage-height record during September. Combined monthly discharge of canals diverting from Snake River between Shelley and Porterville gaging stations for the irrigation season of 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Mininurn Mean 3,040 1,230 2,270 135,000 July...... 2,950 1,620 2,670 164,000 August ___ . __ . __ __ . ___ . __ ...... 2,600 1,660 1,960 121,000 1,660 1,060 1,340 79,700 500,000 SNAKE RIVER AT PORTERVILLE BRIDGE, NEAR BLACKFOOT, IDAHO LOCATION. In sec. 26, T. 2 S., R. 35 E., 3i miles north of Blackfoot, Bingham County, a quarter of a mile below Porterville Bridge and just below heading of Danskin canal. Station was formerly maintained at Porterville Bridge, above heading of Danskin canal. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 13, 1918, to September 30, 1921, at present site; June 12 to September 30, 1916, at sight at Porterville Bridge. GAGE. Friez water-stage recorder on left bank, referred to hook gage inside well and vertical staff outside; installed October 27, 1918, at site of inclined gage which has been used since May 13, 1918, but at a datum 1.54 feet higher. An auxiliary low-water gage on left bank about 100 yards upstream is used during extremely low stages. Gage used prior to September 30, 1916, vertical staff on right abutment of Porterville Bridge. DISCHARGE MEASUREMENTS, Made from cables over two channels about a quarter of a mile below gage or by wading. CHANNEL AND CONTROL. Bed composed of cobble in gravel drift; clean except for occasional lodgment of drift. Control shifts at high stages. One chan nel at gage but divided by an island into two channels at control, except at low stages. 20 SURFACE WATER SUPPLY^ 1921, PAET XII B EXTREMES OF DISCHARGE. Maximum stage recorded during period May 31 to September 30, 9.44 feet at 10 a. m. on June 1 (discharge, 28,600 second-feet); minimum stage recorded, 3.60 feet at 2.30 p. m. September 29 (discharge, 1,770 second-feet). 1916; 1918-1921: Maximum stage from inclined gage, 13.5 feet June 17 and 18, 1918 (discharge, 46,900 second-feet); minimum stage from auxiliary low-water gage, 2.07 feet at 9 a. m. on September 16, 1919 (discharge, 30 second-feet). ICE. Stage-discharge relation seriously affected by ice; observations discon tinued during winter. ~ , DIVERSIONS. Practically the entire natural summer flow of the river is diverted above the station. REGULATION. Natural flow during irrigation season is augmented by the re lease of stored flood waters in Jackson Lake for use on the Minidoka and Twin Falls tracts. ACCURACY. Stage-discharge relation not permanent. Standard rating curve well defined below 6,500 second-feet. Operation of water-stage recorder satisfactory. Daily discharge obtained by applying to rating table mean daily gage height determined from inspecting recorder graph and by shift ing-control methods. Records May to July, fair; August to September, good. Discharge measurements of Snake River at Porterville Bridge, near Blackfoot, Idaho, during the period May 14 to Sept. 80, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge feet Sec-/*. Feet Sec.-ft, T. R. Newell ... 7.46 16, WO A IIP Q T. R. Newell __ - 4.40 4,020 June 6 .do . . 8.75 24,500 24 4.15 3,410 July 6 .do ...... 6,310 Sept. 21 3,74 2,120 Daily discharge, in second-feet, of Snake River at Porterville Bridge, near Black- .foot, Idaho, for the period May 81 to Sept. 3Q, 1921 , Day May June July Aug. Sept. Day May June July Aug. Sept. 1 28,500 7,000 6,460 3,020 16... _ . 25,700 7,720 5,250 2,220 2...... 28,100 7,000 7,000 2,750 17...... 24,200 7,180 5,250 2,080 3 26,700 6,820 7, 540 2,640 18 ,- 22,300 7,360 5,250 2,000 4 ... 25,200 7,540 7,720 2,780 19 . . 19,600 7^640 5,080 1,950 6. '. 24,800 7,720 6,820 3,200 20 ... 16,400 7, 910 4,580 2,030 6...... 24,800 6,280 5,590 3,410 21- .4 13,400 7,910: 4,100 2,140 7 24,800 5,420 5,420 3,380 22 11,000 7,720 3,780 2,160 8 25,200 5,590 4,580 3,110 23...... 9,600 7,360 3,410 2,140 ». 25, 700 8,760 4,160 2,870 94 9,030 7,000 3,290 2,110 10 26,200 5,760 4,100 9 7SO 25. ,-- 9,030 7,180 3,290 2,030 11 26,200 5,760 4,160 2,750 26 9,220 7,180 3,350 1,950 I2C 25, fOO 6,460 4,070 2,700 27 9,220 6,820 3,440 1,900 13 25, 700 7,180 4,070 2,700 28 . 7,910 6,280 3,690 1,820 14 25,200 7,720 4,320 2,670 29 7,180 5,940 3,810 1,800 15 25,700 8,100 4 ' 920 2,470 30...... 7,000 5,940 3,660 1,800 Q1 00 OAA 5,940 3,410 NOTE. No record Oct. 1,1920, to May 30,1921. SNAKE BIVER 21 Monthly discharge of Snalee River at Porterville Bridge, near Blackfoot, Idaho, for the period May 31 to Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean May 31...... 28,300 56, 100 28,~ii66 . 7,000 19,600 1,170,000 July 8,100 5,420 6,870 422,000 7,720 3,290 . 4,700 289,000 September ____ .,...: __ , __ . __ ...... _ ------3,410 1,800 2,450 146,000 ______2,080,000 i DIVERSIONS FROM SNAKE RIVER BETWEEN PORTERVILLE AND BLACKFOOT GAGING STATIONS, IDAHO Between Porterville. and Blackfoot gaging stations six separate canals divert water from Snake River for irrigation. Gaging stations are maintained at head ing of eaeh canal by the United States Geological Survey for the Idaho State Department of Reclamation to facilitate distribution of the water. Records are available from June 1, 1919, to September 30, 1921. Stage-discharge relation on most of the canals affected by growth of aquatic plants or by operation of check gates. Rating curves are well defined. Gages read to hundredths daily except during September when occasional readings were made. Records good. Combined daily discharge, in second-feet, of canals diverting from Snake River be tween Porterville and Blackfoot gaging stations for the irrigation season of 1921 Day June July Aug. Sept. Day June July Aug. Sept. I ...... 223 263 243 129 16.-... _ ...... 281 245 221 126 2....:...... 219 241 245 132 17 ...... 314 250 205 123 34 _.._.' -, ..' 213 224 247 132 18 301 252 217 121 206 934 1 243 135 19...... _ ...... 264 249 216 117 5.-. - __ 230 240^ 238 161 20 ...... 272 246 199 113 6...-. __ ...... 239' 206 215 173 21...... -.. ... 242 223 194 111 7-..... , __ . OKQ 10*5 221 184 22 __ .... _ . 318 223 174 111 8...... ___ 258 197 221 176 23 __ ...... 303 220 152 111 9...... -.- _ ... 267 231 209 169 24 . 294 231 151 106 10 ... _ . __ . 271 232 191 160 25 .. 294 240 166 101 11...... __ . 231 191 151 26 ...... 294 237 189 95 12.... __ .... _ 27*8 249 194 144 27 ...... 304 234 170 96 13...... 290 244 189 136 28 ... . . 290 232 188 95 14...... 292 229 199 133 29... ___ ...... 268 230 187 96 15. .. _ ...... 296 249 213 129 30 284 234 177 96 31...-. . __ . 237 157 NOTE. No record obtained Oct. 1 to May 31. Discharge interpolated for days of no gage-height rec ord during September. All diversions are above entrance of Blackfoot River. Combined monthly discharge of canals diverting from Snake River between Porter ville and Blackfoot gaging stations for the irrigation season of 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 318 206 271 16, 100 July ...... ^...... 263 195 234 14,400 247 151 201 12,400 184 95 129 7.680 50,600 22 SURFACE WATEB SUPPLY, 1921, PAET XII B SNAKE RIVER NEAR BLACKFOOT, IDAHO LOCATION. In sec. 31, T. 3 S., R. 34 E., a quarter of a mile below mouth of Blackfoot River and 14 miles southwest of Blackfoot, Bingham County. Blackfoot River is only large tributary between station and mouth of Henrys Fork, 60 miles above. Portneuf and Bannock rivers and 2,500 second-feet of spring water enter between this station and station at Neeley. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. June 6, 1910, to September 30, 1921. GAGE. Friez water-stage recorder on right bank; installed July 6, 1913, at same site and datum as staff gage installed October 1, 1912. Original gage used June 6, 1910, to September 30, 1912, was 50 feet above present site. Datum of gage raised 0.06 foot June 25, 1911, and 0.03 foot October 1, 1912, when newv staff was installed. Observer, J. A. Clough. <: ;' DISCHARGE MEASUREMENTS. Made from cable 50 feet above gage or by wading. CHANNEL AND CONTROL. Bed composed of very coarse gravel. Two channels at low and medium'stages. Control shifts slightly during high water. EXTREMES OF DISCHARGE. Maximum stage recorded during year from water- stage recorder, 11.51 feet at 1 p. m. on June 1 (discharge, 28,800 second-feet);; minimum stage, 3.54 feet from 6 p. m. October 1 to noon of October 2 (dis charge, 1,370 second-feet). ; 1910-1921: Maximum stage recorded during period, from water-stage recorder, 14'.8 feet (approximately) at 5 p. m. on June 18, 1918 (discharge, about 46,200 second-feet>; exact discharge uncertain because of probable shift in stage-discharge relation at about this time. Minimum stage, 1.93 feet at 6 p. m. August 25, 1919 (discharge, 118 second-rf eet). ; ICE. Floating ice sometimes present for short periods; stage-discharge relation apparently not affected. DIVERSIONS. Practically entire natural summer flow of the river is diverted above station. REGULATION. Flow regulated by storage in Jackson Lake reservoir and in Black- foot Marsh reservoir on Blackfoot River. Practically entire summer flow is released water from these reservoirs. ACCURACY. Stage-discharge relation not permanent. Rating curves well' denned. Operation of water-stage recorder satisfactory except during short periods of coldest weather, when occasional staff gage readings were used. Daily discharge ascertained by applying to rating table staff reading or mean daily-gage height obtained by inspecting gage-height graph, except as noted in footnote to daily-discharge table. Records good. Discharge measurements of Snake River near Blackfoot, Idaho, during the year end ing Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 23 T R Newell 5.18 4,150 T. R. Newell.. 6.98 9,280 .....do-.-.. . .. 4.55 2,930 July 4 .do 6.27 7,280 Apr. 23 .....do - _ ..--.. 6.56 7,480 ..... do.-*-*.. 6.22 7,060 G. C. Baldwin . -. 9 EK --.do .. 5.02 4,210 June 2 T. R. Newell 11.40 28,500 Sept. 20 ..-.do.-...... 3.80 2,180 ; ,' SNAKE RIVEB 23; Daily discharge, in secoiid-feet, of Snaht. River near Blackfoot, Idaho, for the year ending Sept. SO, 1921 Day Oct. ,Noy. Dec. Jan. Feb.. Mar. Apr. May June July Aug. Sept. 1 _ 1,440 3,700 3,600 3,220 3,040 3,320 2,600 7,300 28,800 7,040 6,140 3,290 2... _____ 1,380 3,720 3,600 3,600 2,950 3,500 2,600 7,860 28,300 7-040' 6,780 2,870 3 ___ ...... 1,590 3,740 3,600 3,410 2,950 3,600 2,600., 9,060 27,300 6,910 7,180 2.7JO 4. ___ ...... 1,650 3,750 3,790 3,130 2,950 3,700 2,860 '11,100 25,300 7,310 7,720 2,790 5. ___ - __ - 1,630 3,770 3,'790 3,410 2,950 3,700 3,600 12,700 24,300 8,150 7,040 3,200 6 1,580 3,790 3,600 3,410 2,860 3,700 4,300 15,200 24,300 6,650 5,900 3,470 7...... 1,630 3,760 3, 790. 2,950 2,600 3,700 4,940 16,900 24, 300 5,660 5,540 3,560 8 ...... 1,660 3,740 3,700 3,220 2,350 3,700 4,720 18,300 25,300 5,420 4,860 3,380 9... _ ...... 1,800 3,710 3,730 2,780 2,610 3,600 4,190 18,800 25,300 5,660 4,330 3,040 10. 2,000 3,680 3,760 2,440 2,870 3,410 3,990 18,300 25,800 5,540 4,130 2,950 11 2,110 3,650 3,790 2,440 3,130 3,320 3,890 17, 400 25,800 5,540 4,230 2,870 12 ...... 2,350 3,630 3,600 2,110 3,130 3,320 3,790 16,900 25,800 6,140 4,130 2,870 13. 2,600 3,600 2,950 2,110 3,130 3,320 4,190 17,400 25,800. 6,780 4,130 2,790 14. ___ ... 2,780 3,600 3,130 2,190 3,500 3,320 4,610 16,900 24,800 7,180 4,430 2,790 15. __ ...... 2,950 3,790 3,040 2,350 3,410 3,320 5,400 16,900 24,800 7,720 4,970 2,630 16 .- 2,950 3,790 2,480 2,600 2,950 3,410 '5, 750 17, 906 25,300 7,310 5,420 2,350 17- __ 3,040 3,790 2,500 2,950 3,040 3,326 5,990 18,800 24, 300 6,780. 5,420 2,160 18 3,220 3,790 2,520 3,320 2,690 3,320 6,240 20,200 22,800 6,910 5,540 2,100 19 . 3,320 3,990 2,950 3,500 2,440 3,500 6,630 21, 700 20,000 7,180 5,420 2,100 20 3,600, 4,090 3,410 3,500 2,350 3,700 7,300 22,700 16,800 7,310 4,860 2,170 21. __ ...... 3,700 4,190 3,600 3,500 2,440 3,790 7,860 21,800 13,600 7,720 4,430 2,230 22- _ ... 3,790 4,300 3,190 3,320 2,950 3,600 7,860 21,000 11,400 7,440 4,030 2,320 23 3,890 4,190 2,780 3,040 3,000 3,500 7,580 20,200 9,679 7,180 3,560 2,320 24- _ .,. ... . 3,890 3,990 2,860 2,860 3,040 3,320 7,860 19,300 8,740 6,780 3,380 2,260 25- __ ... 3,890 3,890 2,950 2,520 3,080 3,320 8,450 19,800 9,040 6,780 3,380 2,180 26 ...... 3,790 3,890 2,780 2,600 3,130 3,220 7,860 20,700 9,350 6,910 3,470 2,060 27 3,600 3,790 2,840 2,940 2,950 3,130 7,580 21,700 9,350 6,780 3,560 1,970 28. __ ... 3,600 3,790 2,880 2,940 3,040 3,040 7,030 23,200 8,440 6,270 3,840 1,890 29 ... 3,600 3,890 2,950 3,040 2,860 6,760 25,200 7,310 5,780 4,030 1,900 30- 3,600 3,700 3,040 2; 950 2,780 6,900 27,200 7,040 5,660 3,840 1,930 31 ...... 3,700 3,040 3,040 2,690 28,300 5,660 3,650 NOTE. No gage-height record Nov. 2-5, 7-12, Dee. 9,10,16,17,22,27,28, Jan. 18,27,28, Feb. 7,9,10,12, 23-25, and May 21-23; discharge interpolated except Dee. 16,17, Jan. 18,27,28, for which it was estimated. Monthly discharge of Snake River near Blackfoot, Idaho, for the year ending Sept. 30,1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 3,890 1,380 2,780 171,000 4,300 3,600 3,820 227,000 3,790 2,480 3,230 199,000 3,600 2,110 2,960 181,000 February _ .. .. ______.. __ ...... 3,500 2,350 2,910 162, 000 3,790 2,690 3,390 208,000 April...... 8,450 2,600 5,530 329, 000 28,300 7,300 18,400 1, 130, 000 28,800 7,040 19,600 1, 170, 000 July . . .-... 8,150 5,420 6,680 411,000 August ______. ____ ...... 7,720 3,380 4,820 296,000 September . ______. _____ 3,560 1,890 2,570 153,000 28,800 1,380 6,410 4,640,000 SURFACE WATER SUPPLY; 1921, PART Xll B SNAKE RIVER AT NEELEY, IDAHO LOCATION. In sec. 11, T. 8 S., R. 30 E., half a mile north of Neeley post office, Power County, 4 miles southwest of American Falls, and 32 miles above Minidoka dam. Portneuf and Bannock rivers and 2,500 second-feet of spring water enter Snake River between this station and station near Black- . foot. Raft River enters 18 miles below Neeley. DBAINAGE AKEA, Not measured. RECORDS AVAILABLE. March 17, 1906, to September 30, 1921. GAGE. Friez water-stage recorder installed Augusts, 1910, on left bank at same site and datum as staff gage previously used. Observer, H. R. Wallis. DISCHARGE MEASUREMENTS. Made from cable at gage. CHANNEL AND CONTROL. Bed of river at measuring section rough, especially near right bank. One channel at all stages. Control composed of lava rock, probably partly overlain with coarse gravel; shifts slightly. EXTREMES OP DISCHARGE. Maximum stage during year from water-stage recorder, 10.97 feet at 6 p. m. June 2 (discharge, 32,200 second-feet); mini mum stage, 4.34 feet at 4 a. m. October 3 (discharge, 3,560 second-feet). 1906-1921: Actual maximum stage doubtful; maximum mean daily stage, 13.5 feet June 20, 1918 (discharge, 48,400 second-feet); minimum stage, 3.65 feet August 20-22, 1906 (discharge, 2,220 second-feet). ICE. Stage-discharge relation affected by ice. DIVERSIONS. Numerous canals near Blackfoot and Idaho Falls divert practi cally the entise natural summer flow of Snake River. REGULATION. Summer flow augmented by stored water from Jackson Lake for use on Minidoka project and Twin Falls tracts. Diurnal fluctuations some times result from operation of power plant 4 miles upstream. ACCURACY. Stage-discharge relation changed slightly January 13-14, affected by ice January 13, 14, and February 8 and 9. Two well-defined rating curves used. Operation of water-stage recorder satisfactory except for short periods during winter when well was frozen, and September 17-28, when float well was being rebuilt. Daily discharge ascertained by applying t» rating tables staff reading or mean daily gage height obtained by inspec tion of recorder graph, except as noted in footnote to table of daily discharge. Records excellent. Discharge measurements of Snake River at Neeley, Idaho, during the year ending Sept. 80, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet 8ec.-ft. Jan. 17 T. R. Newell _ .... 5.14 5,600 June 24 T. R. Newell . _ _ 7.03 12,200 9.22 22, 200 Aug. 12 .....do--.-.. .. 5.59 7,000 T. R. Newell ...... 10.86 31,600 .....do. - _ -.... 5.10 5,540 SNAKE EIVEB Daily discharge, in second-feet, of Snake River at Neeley, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. I...... 4,350 6,640 6,340 6,190 5,930 7,030 5,480 10,400 31,630 9,730 8,340 5,780 2...... 3,960 6,640 6,190 6,490 5,780 7,200 5,480 10,900 32,050 9,690 8,960 5,750 3...- 3,840 6,640 6,340 7,110 5,780 7,360 5,630 11,500 31, 810 9,581 9,020 5,510 4..... _ . 4,350 6,640 6,340 6,490 5,780 7,200 5,780 14,200 30,750 9,580 10,100 5,160 5 ...... 4,350 6,490 6,340 6,640 5,780 7,360 6,390 15,100 29,230 10, 470 10,060 5,450 6...... 4,350 6,640 6,340 6,640 5,780 7,200 7,030 ,16,600 28,020 10, 100 9,180 5,870 7 4,220 6,640 6,340 5,890 5,480 7,200 7,690 19,000 27, 730 8,900 8,370 6,200 8...... 4,220 6,800 6,340 5,740 5,280 7,030 8,030 20,700 27,900 8,100 7,960 6,170 9...... 4,350 6,800 6,340 6,040 5,180 7,030 7,690 21,800 28, 470 8,100 7,290 5,870 10...... i. 4,350 6,800 6,340 5,600 5,260 6,710 7,360 22,300 28,820 8,030 6,650 5,720 11...... 4,750 6,640 6,490 5,460 5,340 6,550 7,200 21,800 29, 110 8,100 6,740 5,570 12...... 4,890 6,640 6,270 5,310 5,780 6,390 7,030 21,000 28,940 8,170 6,810 5,600 13...... 5,170 6,490 6,040 4,910 6,240 6,550 7,200 21,000 28,880 8,680 6,680 5,,510 14 5,310 6,490 5,820 4,910 6,870 6,710 7,690 21,200 28,590 9,'250 6,710 5,450 15 5,460 6,640 5,600 4,910 7,360 6,550 8,370 91 ram 9,870 7,230 5,420 16...... 5,600 6,800 5,700 5,190 6,240 6,550 8,540 21,000 28,020 10,210 7,930 5,360 17 .... 5,600 6,800 5,790 5,630 6,240 6,550 8,900 22,000 28,190 9,870 8,130 5,130 18 ... 5,740 6,800 5,890 6,240 5,930 6,550 9,070 23,100 27, 270 9,500 8,130 5,160 19 6,040 6,800 6,040 6,550 5,480 6,710 9,430 24,200 25,540 9,620 8,100 4,800 20 ..... 6,340 6,800 6,190 6,550 5,340 6,710 9,980 25,200 22,280 9,730 7,760 4,850 21 ..... 6,340 6,960 6,640 6,550 5,340 7,030 10,600 26,300 18,760 10, 170 7,260 4,910 22...... 6 fun 6,960 6,490 fi 9M 5,480 6,870 10,700 25,500 15,680 10, 130 ft oan 4 cun 23 6,800 7,110 6,290 5,930 5,930 6,870 10,700 23,900 13,420 10,020 6,610 24 __ . 6,640 6,800 6,090 5,930 5,930 6,710 10,600 23,300 12,150 9,500 6,200 5,080 25 ..... A fiin 6,800 5,890 5,480 5,930 6,550 11,300 23,300 11,710 9,320 5,990 A ooft 26... ___ . 6,490 6,640 5,890 5,340 6,080 6,390 11,300 QQ QAA 11,950 Q ilfl 6,020 4,910 27 . 6,490 6,800 5,890 5,630 6,080 6,390 10,700 24,700 12,190 9,180 6,110 4,880 28...... 6,340 6,640 5,890 5,930 6,240 6,080 10,400 OK onn 11, 910 9,070 6,200 4,660 29 __ . 6,340 6,640 5,890 5,780 6,080 9,800 27,400 10,660 8,510 6,610 4,660 30 __ . 6,340 6,490 6,040 5,780 5,780 10,200 QQ QAA O slo 8,130 6,650 4,580 31 . . 6,490 6,190 5,930 5,630 30,600 8,100 6,450 NOTE. No gage-height record Dec.12-14,16,17,19,23,24, 26-28, Jan. 11,13,14, Feb. 10, Mar. 24,25, and May 19,20; discharge interpolated except Jan. 13 and 14, for which it was estimated. Stage-discharge relation affected by ice Feb. 8 and 9; discharge estimated. Monthly discharge of Snake River at Neeley, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet. Maximum Minimum Mean 6,800 3.840 5,440 334, 000 7,110 6,490 6,720 400,000 6,640 5,600 6, 140 378,000 7,110 4,910 5,900 363,000 7,360 5,180 5,850 325,000 7,360 5,630 6,690 411,000- April ...... ___ ...... 11,300 5,480 8,540 508,000 30,600 10,400 21,500 1, 320, 000 32,050 9,840 23,300 1,390,000 July.... , -...... 10, 470 8,030 9,260 569, 000 August... ..-...... _ . __ ...,. .. ______10,100 5,990 7,480- 460,000 6,200 4,.580; 5,300 315, 000 32,050 3,840 9,360 6, 770, OOOi, 26 SURFACE WATER SUPPLY, 1921, PART XII B LAKE WALCOTT NEAR MINIDOKA, IDAHO LOCATION. In sec. 1, T. 9 S., R. 25 E., in backwater of United States Bureau of Reclamation dam, 6 miles southeast of Minidoka post office, Minidoka County. RECORDS AVAILABLE. April 1, 1909, to September 30, 1921; gage heights only prior to October 1, 1918. GAGE. Hook gage in wooden stilling well on face of dam at entrance to power house. Early gage-height record from hook gage in concrete stilling well on point of rocks in front of power house; same datum as present gage. Zero of gage, 4,200 feet above sea level. ACCURACY. Gage heights occasionally affected by wind. COOPERATION. Gage-height record and table of contents furnished by United States Bureau of Reclamation. Lake Walcott impounds water for the irrigation of lands in the North Side Minidoka project and the South Side Minidoka project of the United States Bureau of Reclamation. It has a capacity of 107,240 acre-feet, between eleva tions 4,236 and 4,246 feet; elevation of spillway, 4,240 feet, sea-level datum. Daily contents, in acre-feet, of Lake Walcott near Minidoka, Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 ...... 92,740 92,860 84, 350 83,770 83,540 84, 120 85,290 90,990 103,020 106, 030 98,800 100, 970 2...... 94,720 92,620 84,240 84,010 83,770 85,870 85,290 89,600 103, 980 104, 820 97,840 96,270 3 ... _ 95,180 92,160 84, 470 85, 050 83,090 85, 870 85,050 91,690 103, 140 105, 790 98,560 95, 910 4 __ ..... 96, 150 92, 270 84, 470 85,520 82, 750 86, 220 84,940 92,160 102,900 105,550 99, 880 95, 910 99, 280 92, 270 84,240 84,590 83,540 85, 520 85,980 94,250 101, 690 105, 310 103, 020 94,020 6...... 101, 690 92,860 85,170 84,590 83, 310 86,330 86,800 95, 910 100, 010 106, 630 105, 670 92, 740 7...... 102, 410 91,690 83, 310 84,350 83,310 85, 870 87,500 97,720 99,280 105, 430 106, 030 92, 740 8...... 105, 070 92, 620 83,770 83,540 82,860 86,450 88,780 98,800 98,440 104,820 105, 790 93,670 9 104,100 92, 510 83, 770 83, 310 82,860 85, 870 89,130 101, 690 99, 040 102, 410 104,340 94,490 10. 103, 860 91,690 83,080 83, 310 82, 410 84,940 88, 080 101, 690 99,280 101, 210 101, 930 96,990 11.-.. 103,860 90,530 84, 010 82, 640 82,410 85,640 87,730 100, 250 99,040 99,640 99,640 97,590 12...... 102, 780 88,780 84, 010 81, 740 83, 770 85,400 87,960 100, 850 99,040 97, 840 101,810 98,200 13 ..... 103, 620 87, 960 84, 470 81, 850 85, 870 85, 170 87,730 100, 370 98,200 96,870 104, 820 99,400 14.. ... 104, 340 87, 850 83, 770 81, 620 86,330 85,290 87,960 100,010 100, 010 96,630 106, 630 100, 130 15 104,580 87,850 83, 310 81, 510 85, 870 85,640 89, 010 99,760 100, 970 97,110 106, 030 100,850 16 ...... 105, 910 87,500 82, 980 81, 280 85,290 84,700 89, 830 99,280 99, 760 98,080 106, 510 101, 930 17...... 105, 550 85, 870 82,860 81,280 84,470 85,400 90,530 99,760 100, 610 100, 010 105, 790 102, 050 18 ...... 105, 550 85,400 82,190 83 090 83,890 85, 170 91, 110 102, 410 100, 970 101, 210 105, 910 102, 540 19...... 103, 980 85, 170 82,640 84,700 85, 750 92,040 103, 860 99, 520 102,050 106, 030 102, 540 20 104,220 84,700 82,860 84,940 82,980 86,680 91, 110 102,900 99,760 102, 170 106, 510 101,690 21...... 101, 690 85,750 83,540 84,940 82,860 87, 030 92,740 103, 260 99,040 102, 170 104,940 103,020 22 99,280 85,290 84,010 84 240 83,090 86, 800 101, 690 99.760 104,100 104, 700 103,860 23 99,040 85,520 83,890 83,890 83,310 86,570 91,920 100,490 102,290 105, 550 103, 500 104, 700 24...... 97,110 85,520 83,090 83,890 86,450 92,860 99,280 102, 410 106, 270 103,620 100, 370 25 ...... 96,270 85,050 83,200 83,430 84, 010 86, 100 01 soft 99,040 105, 790 06,270 94,020 26...... 96,030 85, 170 83,090 82,860 86,220 92,390 99,040 106,030 05, 310 102, 170 87, 270 27 95, 670 84,240 82,980 82,980 84,120 86,220 93,440 97,960 106,030 05,790 100, 730 80,610 28...... 95,180 85,640 82,640 83,200 84,350 85,980 92,860. 00,970 106,150 05, 310 100, 730 72,940 29 95,180 85,640 83, 310 83,770 85,050 91, 110 101, 810 105, 310 04,460 100, 250 66,110 30...... 95,670 84,700 83, 310 83,310 85,870 90,990 103,620 106, 630 02,900 100, 730 60,630 31...- .. 85,400 103, 260 02, 410 101,330 27': SNAKE RIVER SNAKE RIVER NEAR MINIDOKA, IDAHO LOCATION. In sec.- 2, T. 9 S., R. 25 E., 100 yards below Howells Ferry, 1 mile below United States Bureau of Reclamation dam, 6 miles southeast of Mini- doka post office, Minidoka County, nearest railroad point, and 6 miles above Montgomerys Ferry gaging station, which was discontinued December 31, 1910. Raft River enters between this station and station at Neeley. DRAINAGE AKEA. Not measured. RECORDS AVAILABLE. April 21, 1910, to September 30, 1921. GAGE. Friez water-stage recorder on right bank directly across river from and at same datum as staff gage used prior to August 28, 1911; also Stevens long-distance recorder installed in 1915. Gage inspected by employees of United States Bureau of Reclamation. DISCHARGE MEASUREMENTS. Made from cable about 50 feet below gage. CHANNEL AND CONTROL. Bed composed of coarse gravel. One channel at all stages. Control shifts slightly. , EXTREMES OF DISCHARGE. Maximum stage during year from water-stage re corder, 13.36 feet at 3 p. m. June 2 (discharge, 32,900 second-feet); minimun stage, 5.03 feet at 5 a. m. October 3 (discharge, 2,550 second-feet). 1910-1921: Maximum stage recorded, 16.02 feet at 1 a. m. June 21, 1918 (discharge, 45,900 second-feet); minimum stage, 4.05 feet from 11 a. m. to 3 p. m. October 13, 1914 (discharge, 960 second-feet). ICE. Some shore ice forms near gage and river closes farther down; stage-dis charge relation slightly affected at times. DIVERSIONS. The North Side and South Side (Minidoka) canals divert water between the Neeley and Minidoka stations. The nearest diversions below the station are Twin Falls North Side and South Side canals at Milner. REGULATION. Flow partly regulated by storage in Lake Walcott above Mini doka dam (storage capacity about 67,000 acre-feet above spillway). ACCURACY. Stage-discharge relation not permanent. Standard rating curve well defined between 3,000 and 20,000 second-feet; one parallel curve used. Operation of water-stage recorder satisfactory. Daily discharge ascertained by applying to rating table mean daily gage height obtained from inspection of recorder graph and by shifting-control methods, except December 10-18, for which it was interpolated. Records good. Discharge measurements of Snake River near Minidoka, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft, Jan. 16 T. R. Newell...... 6.16 4,840 July 8 IWfttr 14, 10.41 19,300 son 6.82 6,440 Jane 20 T T> XTo-n/ell 10.95 20,700 Aug. 27 ..... do...... 5.87 4,110 30 T.R.Newell ...... 5.44 3,270 7.28 7,690 1 Employees of United States Bureau of Reclamation. 14234 25 3 28 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Snake River near. Minidoka, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 2,920 6,830 6,450 6,320 6,080 6,680 5,100 9,020 31,420 6,930 6,350j 4,400 2 _ -- 2,750 6,830 6,450 6,450 6,080 7,090 5,100 9,020 32, 410 7,430 6.15Q 4,690 3.. __ - .... 2,670 6,580 6,580 7,090 5,950 7,090 4,640 9,960 32,460 7,120 6,120 4,510 4 _ - .... 2,840 6,450 6,580 7,090 6,080 7,350 5,220 10,600 31, 660 7,120 6,080 4,400 5 - - 2,750 6,830 6,460 6,450 6,080 7,090 5,830 12,500 30,010 7,140 5,950 4,510 6 ___ ..... 2,750 6, 830 7,090 6,580 6,080 7,360 6,200 14, 100 28, 270 7,510 6,000 4,250 7. __ .. 3,190 6,200 6,200 6,580 5,950 7,350 6,580 16,100 27,330 7,090 5,930 4, 120 8 - 4,310 6,700 6,200 6,080 5,580 7,860 7,090 17,900 26,910 6,250 5,980 j 3,970 4,530 7,350 6,450 5,950 5,580 7,090 7,360 20,100 27,050 6,280 6,000 3,460 10 - 4, 200 7,350 6,380 5,950 5,340 7,090 6,830 20,600 27, 330 6,160 6,630 3,280 11 4,420 7,620 6,300 5,700 5,340 7,090 6,580 20, 600 27, 570 6,180 3,950 3,320 19 4,530 6,830' 6,220 5,340 6,320 6,700 6,460 20,100 27,430 6,250 2,820 3,420 13 .- 4,640 6,320 6,150 5,220 7,350 6,580 6,580 19,200 26,120 6,280 2,900. 3,250 14 - 4,870 6,450 6,080 4,980 7,880 6,580 6,830 19,200 25,840 6,350 3,910 3,380 4,980 6,700 6,000 4,640 8,160 6,830 7,620 18,800 26,720 6,480 4,640.. 3,400 16 ;, 5,340 7,360 5,920 4,760 7,360 6,580 7,880 18,800 25,610 6,320 5,850 3,320 17 - 5,700 7,350 5,860 5,220 6,700 6,320 8,160 18,800 25,790 6,280 6,750, 3,280 1 ft 6,580 6,830 5,780 5,950 6,320 6,200 8,440 20,100 25,700 6,380 5,410 3,210 19 - 6,830 6,700 5,700 6,580 6,080 6,450 8,720 22,800 24,090 6,480 5,900 : 3,320 20 __ 7,620 6,700 5,950 6,700 5,830 6,320 9,020 24,200 20,340 6,600 5,980 3,210 91 7,620 7,090 6,450 6,700 5,830 6,700 9,960 25,200 16, 260 6,630 5,6,60 3,080 22 7,350 6,830 6,580 6,700 5,700 6,700 10,600 25,600 12, 110 6,550 4,960 3,060 23 .. 7,880 7,090 6,450 6,320 5,830 6,450 10, 300 24,200 10, 370 6,550 4,380 4,870 24 ,- 7,350 7,350 6,080 6,080 6,080 6,580 10, 300 22, 800 8,050 6,700 4,030 6,600 OK 7,090 6,830 5,950 5,950 6,080 6,450 10,300 22,800 7,720 6,680 4, 120 7,040 26 6,830 6,830 5,950 5,700 6,200 6,580 11,000 22,800 8,990 6,600 4,080 6,930 27 _ - 6,700 6,830 5, 700 5,580 6,080 6,320 11,000 23,800 9,740 6,650 4,050 6,990 28 6,450 7,350 5,580 5,830 6,320 6,080 10,300 24, 700 9,610 6,600 4,100 7,270 29 6,320 7,090 5,700 6,080 5,700 9,640 26,600 7,800 6,500 4,100 6 930 30 -.-- 7,350 6,830 6,080 5,830 5,830 9,320 27,900 7,380 4,100,. fi Q3fl 31 - 6,830 6,700 6,080 5,460 30, 300 6,500 4,050 NOTE. Stage-discharge relation affected by ice Dec. 10-18; discharge interpolated. Monthly discharge of Snake River near Minidoka, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet : Run-off in Month acre-feet Maximum Minimum Mean 7,880 2,670 5,360 330,000 7,62o 6,200 6,900 411, 000 7,090 5,580 6,190 381,000 7,090 4,640 6,020 370, 000 8,160 5,340 6,220 345,000 7,350 5,460 6,640 408,000 11,000 4,640 7,960 474,000 30, 300 9,020 19,900 1,220,000 32,500 7,380 21, 600 1,290,000 July- ...... 7,510 6,150 6,610 406,000 6,350 2,820 4,990' 307,000 7,270 3,060 4,480 267,000* The year . ___ . _____ .. _ . ______32,500 2,670 8,680 6,210.000 SNAKE BIVER 29 LAKE MILNER AT MILNER, IDAHO LOCATION. In sec. 29, T. 10 S., R. 21 E., in backwater of Twin Falls companies' dam at Milner, Cassia County. RECORDS AVAILABLE. April 10, 1911, to September 30, 1921. GAGE. Hook gage supplemented by float gage in same well at dam; latter in stalled June 1, 1920, and consists of target which moves directly with large float in well and automatically indicates stage on graduated scale above gage-house floor. A Lietz and a Friez water-stage recorder have also been used for short periods. All gages have same datum. ACCURACY. Gage heights occasionally seriously affected by wind. COOPERATION. Gage-height record furnished by North Side Canal Co., Ltd., and Twin Falls Canal Co. Daily gage height, in feet, of Lake Milner at Milner, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 9.68 8.76 8.22 7.66 7.48 7 50 4 93 9.08 10.90 10.89 10.86 10.62 2 ___ ...... P. 86 a 86 8 9fl 7.60 7.50 7 W 7.52 9.28 10.91 10.60 10.85 10.58 3... _ . .. 9. 46 8.84 8.10 7.72 7.47 7.46 7.31 9.52 10.90 11.03 10.83 10.26 4 9.32 8.82 8.21 7.78 7.54 7.51 7.46 10.01 10.90 11.02 10.70 10.45 5 ----- 9 qe 8.76 8.18 7.42 7.36 7 /M 7.52 10.02 10.89 11.02 10.62 10.43 6. __ _ .. 9.40 9.15 8.54 7 64 7 50 7.46 7.56 10.32 10.88 11.02 10.52 in 4.9 7- __ - __ .. 9.36 8.76 8.30 7.50 7.50 7.46 7.52 10.26 10.90 11.03 10.52 8- _ ..- - 9.54 8.84 7.36 7.70 7.56 7.52 10.30 10.89 10.92 10.52 10.20 9 , 9 NOTE. Gage-height record is mean of two daily observations. SNAKE RIVER AT MILNER, IDAHO LOCATION. In sec. 29, T. 10 S., R. 21 E., 500 yards below Milner dam, at Milner, Twin Falls County. No tributaries enter Snake River between Minidoka station and Milner, and no noteworthy inflow between Milner and station near Twin Falls except seepage and spring water. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 10, 1909, to September 30, 1921. 30 SURFACE WATER SUPPLY, 1921, PART XII B GAGE. Friez water-stage recorder on left bank below highway bridge, referred to combination vertical and inclined staff gage; installed May 28, 1919. Staff gage in three sections on left bank 400 yards upstream, used October 20, 1909, to May 27, 1919, except when supplemented by an auxiliary gage at different datum in three sections 100 yards downstream. Datum of auxiliary gage lowered 1 foot July 30 and 1 foot September 7,1916. Original gage used prior to October 20, 1909, was a vertical staff on right bank at about the same datum as gage used after that date. Observer, W. N. McConnel. DISCHARGE MEASUREMENTS. Made from a cable 400 yards above gage, from foot planks midway between gage and cable, or by wading. Measurements may also be made from the suspension highway bridge immediately above gage, but measuring conditions at this bridge are poor. CHANNEL AND CONTROL. Bed of stream at gage composed of lava rock, over lain with very slight gravel deposits and occasional loose rock. Left bank high and steep; right bank confines flow in narrow gorge below elevation 15 feet gage datum; full river width above that point. Control practically per manent. EXTREMES OF DISCHARGE. Maximum stage during year from water-stage re corder, 21.21 feet at 6 p. m. June 3 (discharge, 27,000 second-feet); mini mum stage recorded, 1.61 feet on August 10-12 and 27-28 (discharge, 11.9 second-feet). 1909-1921: Maximum stage recorded, 20.1 feet (original gage) on June 12, 1909 (discharge, 44,400 second-feet); minimum stage, 1.08 feet (old datum auxiliary gage) August 17-18, 1915 (discharge, 9 second-feet). ICE. Stage-discharge relation not seriously affected by ice. DIVERSIONS. Twin Falls canals divert water at Milner dam, just above the station. During part of the season practically entire flow of river is taken by these canals. REGULATION. Flow past the station during the irrigation season is regulated at Milner dam. ACCURACY. Stage-discharge relation practically permanent. Rating curve well defined below 20,000 second-feet. Operation of water-stage recorder satis factory except during extreme low stages, when staff gage was read twice daily to hundredths. Discharge ascertained by applying mean daily gage height to rating table except on days when marked changes occurred, when mean of hourly discharge was used. Records good. COOPERATION. Gage-height record and thirteen discharge measurements fur nished by Twin Falls Canal Co. Discharge measurements of Snake River at Milner, Idaho, during the year ending Sept. 80, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 23 W. N. McConnel 0 ----- 10.94 6,590 June 21 W. N. McConnel"- ..... 15.12 11,900 Jan. 14 T.E. NewelL...... 8.96 4,470 22 T. E. Newell...... 12.95 8,560 Mar. 28 W. N. McConnelo 9.02 4,400 30 W. N. McConneK 6.72 2,240 Apr. 17 .....do.- __ ...... 11.03 6,410 July 5 .... .do ..-. . 441 543 30 .....do- ...... 10.51 6,100 15 .. do...... 1.86 2as May 9 .....do ...... 15.80 13,900 23 do 1.73 16.2 12 15.78 13,300 26 do . 1.74 16.9 25 W. N. McConnel ...... 18.65 19,000 Aug. 23 -...do 1.67 15.1 "Employee of Twin Falls Canal Co. SNAKE RIVEE 31 Daily discharge, in second-feet, of Snake River at Milner, Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1. __ ...... 1,270 5,440 5,770 5 KCft 5,230 5,340 4,210 5 OA{\ 176 14 2. ___ ...... 1,770 5,440 5,550 5,120 6,100 S een 4,280 26,120 96 14 3. ___ ...... 1,900 5,660 5,770 4,810 6,210 3 OCA 6,320 625 14 14 4 ___ . __ . 1,2301 5,880 5,440 6,430 4 920 o non 5 440 26 380 498 13 5 ___ ..... 1,120 5,880 5 340 5 QQA 5,020 6,210 4,180 fi K4ft 25,210 640 iq 15 6., ...... 1,120 6,320 5,770 5 440 4,810 6,320 4,920 7,860 oq con 688 iq io 7... ____ . 1,190 5,770 5,770 5,550 4,810 5,660 5,020 9,020 23 440 1 040 IQ 14 8...... 1,680 5,550 5,020 5,230 6,870 5,660 n oon oq' 71 A ' 41 iq 14 9. ___ ...... 2,130 6,210 4,920 5,120 .5,020 6,430 6,100 14 600 21 690 24 13 14 10. ___ . __ . 1,720 6,540 5,120 5,020 4,500 6,100 5,770 16 400 21,420 Oq 12 15 11- _ ...... 2,080 7,090 4,810 4,500 5 eon 5,020 10 fiAft 21 310 oq 12 15 12...... 2,130 6,430 5,120 A qofl 4 Q9O 5,880 4 700 14 400 91 PLP.n 91 19 15 13. . 2,220 5,230 5,230 3,680 6,210 3,980 13 400 20,560 22 12 15 14...... 2,880 5,340 4,500 4,080 7,090 6,100 4,500 13' 000 19,240 28 13 15 15 .. _ ...... 3,080 5,440 3 OCA 6,540 5,770 5 440 19 fiftfl 20,450 24 tq 15 16... _ ...... 3,580 5,660 4,390 3,780 6,870 5,340 6,210 12,600 19,580 23 13 16 17 ___ ...... 4,180 6,430 4,500 4 080 6 430 5 440 6,430 13,000 19,090 99 oqj. 1 A 18. __ ...... 4,700 5,880 4,810 4,600 6J660 5,120 6,650 13,600 19,500 22 1 1\ A Kf\ 19. ___ ..... 5,440 5,660 4,810 5,440 5,340 4,920 6,540 18,270 219 2 QQf\ 20. __ ...... 5,230 5,340 4,700 5,990 4,920 5,880 6,100 19 515 1,420 21...... 6,210 5,990 4,810 5,990 4,500 5,990 7,310 21,200 11,820 17 386 372 22. ___ ...... 5,340 6,100 5,550 5,550 5,230 5,880 7,750 21,500 7,740 17 17 710 23 6,100 6,100 5,770 4,810 4,700 5,020 7,420 19,600 4,870 18 15 i "tftn 24 ...... 6,430 .6,430 5,340 5,550 5,020 5,230 7,310 19,400 3,530 18 14 4,610 25.. _ ...... 5,770 5,880 5,020 R AAf\ 5,230 4,700 7,420 IQ inn 1 190 IQ 14 4 ftnn 26. __ ...... 5,440 5,770 4,810 4,920 5,230 5,120 7,420 17,500 3,060 17 12 5,040 27...... 5,120 5,440 4,920 4,500 5,120 5,120 7,970 17 300 3,160 16 12 4,770 28 .. 5,020 6,210' 4,810 4,700 5,230 4,700 e,980 19,600 3,370 14 12 4,440 29 ___ ...... 4,810 6,540 4,810 5,120 3,980 5,550 20,900 1,870 14 12 5,090 30. __ ...... 5,770 6,210 4,920 4,810 5,340 5,440 22,300 682 15 13 4,620 31... _ ...... 6,210 4,700 5,020 7,140 23,800 15 14 NOTE. Mean of hourly discharges used Mar. 31 to Apr. 2, June 21, 24, July 7, Sept. 18. 20. and 23. Monthly discharge of Snake River at Milner, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off Month in acre-feet Maximum Minimum Mean 6,430 1,120 3,640 224,000 7,090 5,230 5,930 353,000 5,770 4,390 5,090 313,000 6, 430 3,680 5,050 311,000 7,090 4,500 5,290 294,000 7,140 3,980 5,680 349,000 April...... 7,970 2,560 5,690 339,000 23,800 4,280 14,600 898,000 26,680 682 16,000 952,000 July...... 1,040 14 137 8,420 515 12 55 3,380 5,090 13 1,370 81,500 26,680 12 5,700 4, 130, 000 32 SURFACE WATER SUPPLY, 1921, PART XII B SNAKE RIVER NEAR TWIN FALLS, IDAHO LOCATION. In sec. 33, T. 9 S., R. 17 E., at Perrine's Bridge, on Blue Lakes ranch, 4 miles north of Twin Falls, Twin Falls County, and 4 miles below Shoshone Falls. Outlet of Blue Lakes enters Snake River 200 feet below gage, and Salmon Falls Creek enters 18 miles below. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. September 29, 1911, to June 30, 1917, and May 1, 1919, to September 30, 1921. GAGE. Combined inclined and vertical staff set in concrete, installed August 18, 1921, at same site and datum as former inclined staff located on left bank, 100 feet above bridge; read by T.-C. Shawver. DISCHARGE MEASUREMENTS. Made from downstream side of bridge. CHANNEL AND CONTROL. Bed of stream at measuring section very rough. Banks high; not subject to overflow. Control composed of lava boulders and solid rock; practically permarient. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 12.92 feet at 6 a. m. June 4 (discharge, 30,600 second-feet); minimum stage, 2.22 feet July 16-18, 20-23 (discharge, 570 second-feet). 1911-1917; 1919-1921: Maximum stage recorded, 13.3 feet at 6 a. m. and 7 p. m. June 10, 1914 (discharge, 32,200 second-feet); minimum stage recorded, 2.05 feet June 27 to July 4, July 9-16, 18-20, 28, 29, and 31, August 1-3, 6, and 7, 1915 (discharge, 468 second-feet). ICE. Stage-discharge relation not affected by ice. DIVERSIONS. No water is diverted from the river between this station and that at Milner, except by small ranch ditches. REGULATION. Flow past the station regulated directly by diversions of the North Side and South Side canals at Milner, where practically entire flow of river is diverted during the latter part of irrigation season; flow at such times consists of inflow and seepage between this station and the one at Milner. ACCURACY. Stage-discharge relation practically permanent. Rating curve well defined. Gage read to quarter-tenths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table. Records good though parts of the records of daily discharge may be somewhat in error as a result of diurnal fluctuations due to operation of gates at Milner dam. COOPERATION. Services of observer paid by Idaho Power Co. Discharge measurements of Snake River near Twin Falls, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Mar. 30 Paulsen and Fiedler _ 5.99 6,400 Aug. 12 Berkeley Johnson ...... 2.31 652 May 20 A. Q. Fiedler.... __ . 10.59 21,300 Sept. 20 .....do... .-.. ..._ . 4.90 3,840 July 25 Berkeley Johnson___ 2.26 640 SNAKE EIVEE Daily discharge, in second-feet, of Snake River near Twin Fatts, Idaho, for the year ending Sept. SO, Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1,940 6,530 7,060 6,790 6,530 6,530 7,320 6,530 28,500 1,400 625 685 2.....,- 2,080 6,530 6,790 6,790 6,270 7,060 2,150 5,040 29,300 970 625 685 3,000 6,790 6,530 7,060 6,020 7,600 4,590 7,320 30,200 750 625. 718 4...... 2,360 7,060 6,530 7,600 5,520 7,600 3,940 6,270 30,200 1,140 625 718 5...... 1,940 7,060 6,270 7,600 6,530 7,600 5,040 7,600 28,500 1,190 698 718 6...... 1,820 7,600 6,530 6,270 5,760 7 firm 5,760 8,440 26,500 1,240 625 750 7 1,820 7,060 7,320 6,790 5,760 6,790 6,020 10,500 25,000 1,400 625 820 8..... 1,940 6,530 6,270 6,020 6,270 Q AAf\ 6 EOT) 13 400 26,900 1,570 656 785 2,830 7,320 6,020 6,530 6,270 7 880 7,880 15,400 23,800 820 656 786 10. .. 2,670 7,600 6,270 6,020 6,760 7,060 7,060 18,200 23,000 625 655 750 11...... _ 2,520 8,720 6,020 6,530 5,620 7,320 6,270 15,700 23,400 625 655 750 12.. 3,180 8,160 6,270 6,760 5,760 7 060 5,760 16,700 23,400 598 625 785 13 2,830 6,530 6,270 6,280 7,600 i, eoo 6,760 15,100 23,000 598 625 785 14 3,540 6,270 5,620 4,690 8,440 8,160 6,280 14,700 21,500 698 625 786 16 - 4,160 6,790 6,270 6,280 8,160 7,060 6,270 14,700 22,300 698 626 970 16..... _ ... 4,370 6,630 6,620 4,820 7,600 6,530 7,320 14,700 21,900 570 626 1,630 17... 5,280 7,880 6,620 6,280 8 1 fin 6,630 7 880 14 400 20,800 570 625 970 152 6,040 7,600 5,760 6,020 6,630 6,270 7^880 16,100 21,500 670 685 820 19...... _ - 6,530 6,790 6,020 6,630 6,790 6,790 8,160 16,400 20,400 598 785 785 20...... 6,530 fl 700 5,760 7 fififi 6,270 7 060 7,320 4)0 QAA 17,800 670 820 i "7dn *>1 7,320 6,790 6,620 7,060 5,760 7 060 Q AAC\ OO ftflfl 14,700 670 1,050 1,690 22.... ___ 6,790 7,880 6,270 7,060 6,270 7,600 9 600 OQ (Mlfi 10,600 670 1 lift 1,460 23...... 7,060 6,790 7,060 6,760 6,020 6,020 8,720 91 onn 6,270 670 896 1,670 24 - 7,880 7,880 fi 7Qfl 8,160 6,278 6,630 9 Ann 21,100 6,760 598 f KA 6,620 26 7,320 7,320 6,020 6,790 6,530 6,020 9,300 21,900 2,360 598 686 6,020 26..,. __ , _ 6,790 6,790 6,020 6,270 6,530 6,020 8,440 19,300 6,280 698 686 6,530 27.... 6,530 6,790 6,020 6,620 6,270 6,270 10,200 10 7nn 3,540 598 686 6,020 9ft 6,270 6,790 6,020 6,760 6,530 6,020 8,720 no OftA 9 *W£\ CQQ 683 6,020 29 6,760 7,600 6,760 6,270 6,280 8,720 23,000 1,940 626 896 7,060 SO...... !. 6,790 7,600 6,020 6,530 6,270 6,270 24 200 1,690 625 970 6,020 31 . 8,160 6,020 6,020 8,720 26,700 625 750 NOTE, Discharge estimated Apr. 2 upon basis of Snake River hydrograph because, owing to regu lation above, gage height recorded was not a true index of mean now for the day. Monthly discharge of-Snake River near Twin Falls, Idaho, for the year ending Sept. 80, 1921 * Discharge in second-feet Run-off Month ' in acre-feet Maximum Minimun Mean 8,160 1,820' k 4, 610 283,000 8,720 6,270 7,160 426,000 7>320 6,620 6,190 381,000 January -;. - ., 8,160 4,690 6,320 389,000 8,440 6,620 6,490 360,000 8,720 6,280 6,980 429,000 April. ______. _____ . __ . __ . _ ... ______10,200 7,070 421,000 May j. . 26,700 5,040 16,200 996,000 June ______. ______30,200 1,690 18,100 1,080,000 July ... . . 1,570 670 760 46,700 1,140 698 716 44,000 7,060 685 2,240 133,000 30,200 670 6,880 4,990,000 34 SURFACE WATER SUPPLY, 1921, PART XII B SNAKE RIVER NEAR HAGERMAN, IDAHO LOCATION. In sec. 2, T. 8 S., R. 13 E., one-eighth mile above Owsley Bridge, just above Upper Salmon Falls, and 4 miles south of Hagerman, Gooding County Big Wood River enters 10 miles below. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. August 24, 1912, to June 18, 1917, and July 25, 1919, to September 30, 1921. GAGE. Friez water-stage recorder installed April 20, 1921, replacing Stevens continuous water-stage recorder located on right bank, installed November 15, 1916, at same datum as former inclined gage. Inspected by employees of the Idaho Power Co. Inclined staff on left bank 50 feet below ferry used prior to August 15, 1915. Vertical staff at same site used thereafter until November 15, 1916. All gages at same datum. DISCHARGE MEASUREMENTS. Made from cable 100 feet below gage. CHANNEL AND CONTROL. Control rocky; permanent. EXTREMES or DISCHARGE. Maximum stage during year, from water-stage re corder, 7.63 feet at 10 a. m. June 3 (discharge, 33,800 second-feet); minimum stage, 3.24 feet July 17 (discharge, 4,720 second-feet). 1912-1917; 1919-1921: Maximum stage recorded, 7.75 feet at 6 p. m. June 10, 1914 (discharge, 35,100 second-feet); minimum stage, 3.1 feet July 15 to August 2, 1915 (discharge, 4,030 second-feet). Data insufficient in 1916 and 1917 for determination of maximum and minimum stages. ICE. Stage-discharge relation not affected by ice. DIVERSIONS. No important diversions between this station and the one at Milner. Practically entire flow of river is diverted at Milner during part of irrigation season by the Twin Falls canals, and flow at Owsley Bridge is maintained largely by springs and waste water from irrigation above. REGULATION. Flow regulated by diversions of the Twin Falls canals at Milner. ACCURACY. Stage-discharge relation permanent. Rating curve well defined. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspecting recorder graph, and by interpolation or esti mation as shown by footnote to daily-discharge table. Records, when re corder was in operation, excellent. Estimated periods based upon Twin Falls and King Hill records, good. COOPERATION. Services of observer paid by Idaho Power Co. Discharge measurements of Snake River near Hagerman, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by heigh* charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Mar. 25 4.30 9,700 July 12 A. G. Fiedler...... 3.29 4,930 A. O. Fiedler - _-_.__ 4.41 10,400 SNAKE KIYER 85 Daily discharge, in second-feet, of Snake River near Hagerman, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. l 6,420 11, 100 10,800 10,300 9,990 10,300 11, 700 10,600 32,200 5,750 5,120 5,460 2. _ . 6,640 10,800 10,600 10,600 9,990 10,300 7,600 '9,710 33,000 5,750 5,120 5,540 3. .... 7,110 10,800 10,300 10,800 , 9,710 11,100 7,850 10,300 33,800 5,540-' 6,120 §,540 4. .... 7,110 11,100 10,300 11,100 9,710 10,800 8,360 10,800 33,800 5,540 5,120 5,540 5. .... 6,640 10,800 9,990 11,400 9,990 11,100 8,360 10,300 32,200 5,750 5,120 5,540 6 _ .. 6,640 10,800 9,990 10,300 9,440 11,100 9,710 11,700 30,500 5,750 5,120 5,540 '7..... 6,640 11,100 10,300 10,300 9,160 10,800 9,990 13,300 29,700 5,540 5,120 5,750 8 __ . 6,420 10,800 10,300 9,710 9,440 10,800 10,300 14,900 29, 700 5,970 5,120 5,750 9 6,880 10,600 9,990 9,990 9,710 11,400 10,800 17,700 28,000 5,540 5,120 5,750 10 7,360 10,800 10,300 9,710 9,440 11,100 10,800 19,900 26,400 5,230 5,120 5,.750 11 6,880 41, 100 10,600 9,710 9,449 10,600 10,600 18,100 26,400 4,920 5,120 5,540 12.. .7,360 11,700 10,300 9,440 9,710 10,600 9,990 18,400 26,400 4,920 5,120 5,540 13 7,600 11,400 10,300 9,160 10,600 10,800 9,710 17,700 25,600 4,720 5,120 5,540 14 7,850. 10,600 9,990 8,620 11,100 11,100 9,160 17,000 24,100 4,720 5,120 5,£40 15 8,620 10,600 9,440 9,160 11,100 11, 100 10, 300 17,000 24,100 4,720 5,120 5,750 16..:.. 9,160 10,600 9,710 8,890 10,800 9,990 11, 100 17,000 24,800 4,720 5, 120 5,970 17 9,440 10,800 9,440 S,890 11,100 9,990 11,400 17,400 23,300 4,720 5, 120 6,190 18 9,440 11,100 9,710 9,710 10,300 10,300 11,400 20, 100 24,100 4,790 5,120 5,970 19. 10,300 11,400 .9,990 9,990 10,300 9,710 11,700 22,900 23,300 4,850 5,120 5,970 20.. 10,800 11,100 9,990 10,300 9, 710 9,710 11,100 25,600 21,000 4,920 5,120 8,100 21. .... 10,800 10,800 9,710 9,990 9, 710 10,600 11,400 25,600 id, loo 4,990 5,336' 7,360 22 11,400 11,400 9,990 9,710 9,710 10,600 12,700 26,400 14,300 5,050 5,540 6,640 23 10,800 10,800 10,800 9,990 9,990 12,700 24,100 10,600 5,120 5,330 6,640 24 11,700 11,100 10,800 9,710 9,990 12,400 24,800 9,710 5,120 5, 120 7,360 25 11,700 11,100 10,300 9,990 9,710 12,400 25,300 7,850 5,120 5,120 9,990 26 11,100 10,800 10,300 o finn 9,990 9,440 12,400 25,900 5,330 5,120 5,120 10,300 27 10,800 10,800 10,300 ft, OUv 9,990 9,990 12,700 26,400 5,750 5,120 5,120 9,990 28 -Li 10,600 10,3(10 10,300 9,990 9,710 12,000 26,400 6,190 5,120 5,120 9,710 29 10,300 10,800 10,300 9,440 11,400 26,400 5,970 5,120 5,200 10,300 30 10,600 11,100 10,800 9,440 9,990 27,200 5,540 5,120 5,290 9,990 31 11,700 10,300 10,600 28,800 5,120 5»370 1 NOTE, Discharge interpolated or- estimated for Feb. 1, May 18,19,25,26,28, June9, July 10,18-22, and Aug. 29-31. Braced figure snows estimated mean discharge for period indicated. Monthly discharge of Snake River near Hagerman, Idaho, for the year ending . Sept. SO, 1921 , . Discharge in second-feet Run-off 'in Month ' acre-feet Maximum Minimum Mean 11,700 6,420 8,930 549,000 11,700 10,300 10,900 649,000 10,800 9,440 10,200 627,000 11,400 8,620 9,870 607,000 11,100 9,160 9,990 555, 000 MArph 11,400 9,440 10,400 640,000 April. __ ,...... _ ..,.-.. . 12,700 7,600 10,700 ,. 637, 000 ; 28,800 9,710 19,600 1,210,000 33, 800 5,330 21,460 i,2?ofmf July . . . , 5,970 4,720 5,180 319,000 5,540 5,120 5,160 317,000 10, 300 5,460 6,820 406,000 33,800 4,720 10,800 7, 790, 000 14234 2£ 36 SURFACE WATER SUPPLY, 1921, PART XII B SNAKE RIVER AT KING HILL, IDAHO LOCATION. In sec. 7, T. 5 S. ,R. 11 E., 300 feet east of Oregon Short Line Rail road station at King Hill, Elmore County. Big Wood River enters from north 20 miles above station. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May-13, 1909, to September 30, 1921. GAGE. Inclined staff on right bank; installed August 17, 1910; read by E. T. Giles and M. J. Beach. Original gage, used May 13, 1909, to March 1, 1910, was a vertical staff on left bank at practically the same site as present gage, but at datum about 2.2 feet higher. Temporary staff gage three-fourths of a mile above, used March 7 to August 16, 1910. DISCHARGE MEASUREMENTS. Made from cable 100 feet below gage. CHANNEL AND CONTROL. -Bed at gage and measuring section composed largely of gravel. Control is lava reef partly overlain with gravel;' shifts slightly. EXTREMES op DISCHARGE. Maximum stage recorded during yearj 14.48 feet at 4.55 p. m. June 3 (discharge, 37,900 second-feet); minimum stage, 5.5 feet July 14, 16-19, 21, and 22 (discharge, 6,280 second-feet). 1909-1921: Maximum stage recorded, 16.3 feet June 22, 1918 (discharge, 47,200 second-feet); minimum stage, 4.5 feet July 7-9 and August 15 and 16 1910 (discharge, 4/760 second-feet). ; : . ICE. Stage-discharge relation not affected by ice. DIVERSIONS. No important diversions for irrigation are made between this station and the one #t Milner. REGULATION. Flow regulated by diversions at Milner. During;i3ertain parts of irrigation season practically the entire flow of the river at Milner is appro priated, and flow at King Hill is derived largely from springs and; i?pepage water from the Twin Falls tracts. ACCURACY. Stage-discharge relation permanent during year. Rating curve is well defined. Gage read to hundredths once daily. Daily discharge ascer tained by applying daily gage height to rating table and interpolating for days of no gage heights. Records good. COOPERATION. Gage-height record furnished by United States Bureau of Reclamation. Discharge measurements of Snake River at King Hill, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet StC.rft. Dec. 15 F. M. Atkinson... __ . 7.12 10,300 10..64. 22,, 100 Feb. 5 7.52 11,800 July 14 Paulsen and Fiedler ... 5.53 6,400 Mar. 28 7.60 12,200 Sept. 21 C. W. Kief , 6. 77 9,490 Apr. 20 A. O.Fiedler ...... 8.16 Nov. 11 7.74 11,500 May 21 __ .do __ 12.42 30,200 SNAKE BIVEB 37 Daily discharge, in second-feet, of Snake River at King Hill, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 . 8,200 13,100 13,400 11,800 12,400 13,400 14,700 12,800 36,700 7,440 6 730 6,960 2..... 8,460 13,100 13,100 13,100 12,400 13,400 9,810 12,100 36,700 7,440 6 730 7,200 3..... 8,720 13, 100 13,100 14,000 11,800 14, 700 8,990 12,100 37,500 6,970 6 960 6,960 4..... 8,990 13,100 12,800 14,300 11,800 15,300 10, 400 12,100 37,100 6,500 6 960 7,200 5..... 8,460 13,100 12,400 14, 300 11,800 15,000 10,100 11,800 35,900 6,960 6 960 7,200 6..... 8,460 13, 100 12,400 13,100 11,800 15,000 11,800 13,400 35,100 6,960 6 960 7,200 7..... 8,720 13, 100 12,800 12,800 11,800 15,000 12,100 15,000 33,100 6,960 6 960 7,440 8..... 8,720 12,800 12,800 12,100 11,500 14,700 12,400 17, 100 34,300 7,440 6,960 7,440 9--;-. 8,720 13,100 11,800 11,800 12,100 14,300 13,100 20,900 32,300 7,440 6,960 7,380 10..... 9,530 13,400 12,100 12, 100 12,100 14,000 13, 100 24,400 31,100 6,960 6,960 7,320 11 __ . 9,260 13,700 12,400 12, 100 12,400 13,700 12, 400 21,200 30,700 6,500 6,730 7,260 12..... 9,260 14,000 12,100 11,800 12,400 13,400 12, 100 21, 200 31, 100 6,500 6,960 7,200 13..... 9,260 13,700 12,100 11,800 13,100 13,100 11,800 20, 500 30,700 6,500 6,960 7,200 14..... 9,530 12,800 12,400 10,700 16,400 13,100 10,400 19,700 29,100 6,280 6,960 7,440 15. . 10,700 13,100 10,400 11,200 15,300 13, 100 12,400 19, 700 28,700 6,500 6,730 7,440 16 .. 10,700 13,100 11,800 11,000 13,700 12, 400 13,400 19,700 29,100 6,280 6,960 7,820 17.... 11,000 13,100 11,200 11,000 14,000 12, 400 13,700 19,700 27, 500 6,280 6,960 8,200 18.... 11,200 13,700 11,500 11,200 13, 100 13, 100 13, 700 22,000 27,100 6,280 6,960 7,940 19 .... 12,400 13,100 11,800 11,800 12,400 13,100 14,000 24,400 27,100 6,280 6,960 7,690 20 13; 100 13,100 11,800 13, 400 12,100 11,800 13,700 27,500 24,800 6,500 7,200 9,530 21.... 13,100 12,400 11, 500 13,400 11,800 13, 100 14,300 29,500 22,400 6,280 7,200 9,530 22 12,800 13,700 12,100 13,100 11,800 13,400 16,300 29,900 17,800 6,280 7,400 8,720 23..... 12,400 13,700 12,800 12,800 12,400 13,100 15,000 28,300 14,000 6,500 7,400 8,460 24..... 12,800 13,700 12,400 11,500 12,100 13,100 14,000 27,900 11,800 6,500 7,200 8,460 25 12,800 13,700 12,100 12,800 12,400 11,800 14, 300 29,100 10,700 6,500 7,200 11,200 26..... 13,100 13,100 12,100 12,100 13,100 11,800 14,700 27,100 8,200 6,500 6,960 12, 100 27 13,100 12,800 11,800 11,800 13,100 12,100 15,000 25,900 9,810 6,500 6,960 12,400 28 12,800 12,800 12,100 11,800 13, 100 11,800 16, 400 26,300 10, 100 6,600 6,960 12, 100 29. _ , 12,800 13,700 11,800 11, 500 11,500 15,000 30,700 10,100 6,730 6,960 11,500 1O Af\f\ 30...., 12,400 13,700 J.A, rftUU 12 200 n , \nj\fftftft 11,500 31,100 8,720 6,730 7,440 12,400 fo inn 31 . ±Of J.UU 12,400 12^ 800 12,100 32,700 6,730 7,200 NOTE. Discharge interpolated Jan. 30, May 6, June 20, July 3, Aug. 28, Sept. 9-11 and 16. Monthly discharge of Snake River at King Hill, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 13, 100 8,200 10,800 664,000 14,000 12,400 13,300 791,000 13,400 10,400 12,200 750,000 14,300 10,700 12,300 756,000 16,400 11,500 15,600 700,000 15,300 11,000 13,200 812,000 April ._. . . . _-.- ... - 16,400 8,990 13,000 774,000 32,700 11,800 22,100 1,360,000 37,500 8,200 25,300 1,510,000 July ... .-...... 7,440 6,280 6,670 410,000 7,440 6,730 7,020 432, 000 12,400 6,960 8,560 509,000 37,500 6,280 13,100 9,470,000 SHAKE RIVER NEAR MURPHY, IDAHO LOCATION. In NW. % sec. 18, T. 2 S., R. 1 E., Ada County, three-quarters of a mile below Swan Falls power plant, 12 miles east of Murphy, Owyhee County, and 38 miles below mouth of Bruneau River. DRAINAGE AREA. 41,900 square miles (measured on United States Land Office maps). 38 SURFACE WATER SUPPLY, 1921, PART XII B RECORDS AVAILABLE. August 29 to October 31, 1912; August 21, 1913, to September 30, 1921. GAGE. Friez water-stage recorder on right bank a quarter of a mile below house on ranch of S. N. Glass; installed September 7, 1914; inspected by George Bahler. Original gage, a temporary vertical staff installed at this site Au gust 29, 1912, was replaced October 2, 1912, by an inclined staff, and a ver tical low-water section was added August 22, 1913. Friez water-stage re corder, temporarily installed, used December 13, 1913, to June 27, 1914. All gages at practically same site and set to same datum. DISCHARGE MEASUREMENTS. Made from boat at ferry cable 1J4 miles above gage. CHANNEL AND CONTROL. Bed composed of lava rock overlain with deposits of sand, silt, and gravel, where not scoured out by current. Control practi cally permanent. Banks not subject to overflow. EXTREMES OP DISCHARGE. Maximum stage during year from water-stage re corder, 12.42 feet at 4 p. m. June 4 (discharge, 40,800 second-feet); a higher stage may have occurred on a day of no record. Minimum stage not defi nitely known because water fell below inlet pipe at times of minimum load at the power plant above. 1912-1921: Maximum stage recorded, 13.95 feet at 10 p. m. June 22, 1918 (discharge, 47,300 second-feet); minimum stage, about 2.25 feet at 6 a. m August 6, 1917 (discharge, about 5,000 second-feet). Stage probably fell equally low at times of minimum load at power plant above during low- water periods in 1919, 1920, and 1921. ICE. Stage-discharge relation not affected by ice. DIVERSIONS. A number of small pumping plants divert water for irrigation between this station and that at King Hill. REGULATION. Large diurnal fluctuations in stage are caused by operation of gates at dam above and by variation in load at power plant, but because of the small relative amount of storage obtained, changes are of short dura tion. ACCURACY. Stage-discharge relation permanent during year. Rating curve well defined. Operation of water-stage recorder satisfactory except for periods indicated by breaks in record as noted in footnote to daily-discharge table. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph. Daily dis charges good except for periods of estimation, interpolation, or days based on partial day gage-height record, which are fair. Monthly summary good. COOPERATION. Services of an observer furnished by Idaho Power Co. Discharge measurements of Snake River near Murphy, Idaho, during the year end ing Sept. 80, 1921 Dis- Gage Dis- Date Made by height charge Date Made by height oharge Feet Sec.-ft. Feet Sec.-ft. Apr. 15 Berkeley Johnson. _ ._ 3.71 12,100 June 17 Berkeley Johnson _ ... 9.80 30,100 16 3.90 12,900 18 9.22 28,300 May 31 .....do...... qq nnn Aug. 2 A. G. Fiedler... __ ... iS 7 C«A 35,100 -- do - ...... 11.52 « SNAKE BIVER Daily discharge, in second-feet, of Snake River near Murphy, Idaho, for the ye ar ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 . 8,100 14,000 14,500 13,600 12,400 13,800 12,600 12,900 37, 100 9,470 6,800 2 8,680 14,500 14,300 13,100 12,000 14,300 15,800 14,300 38,300 8,320 7,090 }7,25C 3 . 7,990 12,400 13,300 13,800 12,200 14,800 12,200 13,300 39,600 7,000 7,470 4 8,930 13, 600 13, 300 15, 500 12,400 1«,800 10,600 12,900 40,800 6,910 7,270 5 9,060 13,300 13,300 14,800 12,200 l|f,300 12,000 14,300 39,900 7,090 7,090 6 8,800 14,000 12,900 14,800 12,000 17,900 10,300 13,800 38,700 7,500 7,000 7,370 7..... 8,560 13,100 12,900 14,000 12,200 17,600 12, 200 15,300 37,500 6,750 7,370 8. _ . 8,320 13,800 13,100 12,900 11,800 16,800 13,600 16,800 36,200 7,180 7,470 9..... 8,560 13, 100 13,300 12,900 11,600 15,500 13,300 19,000 36, 600 7,180 7,270 10 8,560 13, 100 13,100 12,400 12, 200 16,000 13,800 21,900 35,000 7,180 7,470 11 9,620 13,300 12,600 12,600 12,400 15,300 14,300 24,200 34,200 j 7,090 7,470 12..... 9,060 14,500 12, 900 12,000 12,000 14,800 13,800 22,500 33,400 1 7,000 7,670 13 9,060 14,500 12,600 11,800 12,900 14,500 13, 100 22,500 33,400 kooo 6,670 7,470 14 9,620 13,300 12,400 11,600 16,000 14, 800 12,900 22,200 32,600 1 7,180 7,470 15 8,930 12, 900 12,400 11,000 19, 200 15,000 12,600 21,600 31, 100 1 6,830 7,180 16 11,000 12,600 11,400 17,300 15,000 12,900 21,900 31,100 7,000 7,370 17 10, 100 12,900 11,800 14,800 14,300 14,300 22,200 30,300 6,910 7,770 18 11,400 13,100 11,800 14, 800 13,600 14,000 22,900 28,400 7,000 8,100 19 11,600 14,500 11,400 14, 000 14, 300 15,000 25,200 28,100 6,910 7,770 20 12,000 12, 900 12,200 12,900 15,300 27,300 26,600 7,270 7,880 6,500 21 14,000 13, 300 12,000 12,800 14, 800 30,700 24,800 6,830 9,330 22 12,900 12,900 12,000 12,600 13,800 14, 500 ^32,000 21,900 7,370 9,770 23 13,800 13,300 12,000 L&j19 \J\J\Jnnn 12,400 16,000 18,700 7,370 8,930 24 13,300 13,300 12,400 12,900 16, 300 30, 700 15,800 7,470 8,440 25 13,300 13,800 13,100 12,600 16,300 30, 700 13,300 7,180 8,800 26 14,500 13,600 12,600 13, 300 13,300 16,300 31, 500 11, 600 7,180 12,000 27 13,100 14,000 12,200 13,600 12,600 15,500 30,300 9,470 6,520 12,400 28 13,800 14,500 12,000 13,600 13,100 16,000 29,600 9,770 12,400 29 12,400 13,300 12,000 12,900 15,800 30, 700 9,930 6,750 12,200 30 12,600 14,000 12,000 12,400 14,500 33,000 10,100 7,250 12,200 31 12,400 12,900 12,200 35,400 NOTE. Braced figures show mean discharge for periods indicated estimated by comparison with records at King Hill. Days based on partial gage-height record, Feb. 1, Mar. 19, 26, May 27-29, 31, June 4, July 2, Aug. 27, Sept. 3, 24, 25. Discharge interpolated May 30 and June 2 and 3. Monthly discharge of Snake River near Murphy, Idaho, for the year ending Sept. SO,1921 Discharge in second-feet Kun-off in Month acre-feet Maximum Minimum Mean 14,500 7,990 10,800 664,000 14,500 12,400 13,500 803,000 14,500 11,400 12,600 775,000 15,500 12,500 769,000 19,200 11,600 13,300 fSQ.'OQO 17,900 12,200 14,600 898, 000 16,300 10,300 14,000 833,-eeo 35, 400 12,900 23,700 1,460,000 40,800 9,470 27,800 1,650,000 July _ - . 9,470 7,040 433.000 7,470 7,060 434, 000 12, 400 8..530 508,,{X)0 40,800 13,800 9,970,000 40 SURFACE WATER SUPPLY, 1&21, PART XII B SNAKE RIVER AT WEISER, IDAHO LOCATION. In sec. 31, T. 11 N., R. 5 W., a third of a mile above wagon bridge at Weiser, Washington County. Between this station and station near Murphy, Sucker Creek and Owyhee and Malheur rivers enter Snake River from left and Boise, Payette, and Weiser rivers from right. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. October 8, 1910, to September 30, 1921. Fragmentary gage-height records obtained by Weather Bureau since 1895. GAGE. Inclined concrete gage on right bank; installed by Weather Bureau; read by J. W. Lapish. Elevation of zero of gage is^at 2,087.22 feet above sea level. Gage used October 8,1910, to September 30,1914, was an inclined staff on right bank about 200 yards below wagon bridge at different datum. DISCHARGE MEASUREMENTS. Made from cable 200 yards below bridge. CHANNEL AND CONTROL. Bed composed of rocks and coarse gravel. One chan nel at all stages. Control permanent. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 13.60 feet May 23 (discharge, 83,100 second-feet); minimum stage, 2.05 feet July 31 (discharge, 7,140 second-feet). 1910-1921: Maximum stage recorded. that of May 23, 1921; minimum stage, 1.5 feet (Weather Bureau datum) August 28 and 29, 1915, and August 1, 1919 (discharge, 5,550 second-feet). A stage of 15.7 feet was observed March 3,1910, on old Weather Bureau gage (discharge, about 100,000 second- feet). ICE. Stage-discharge relation not affected by ice. DIVERSIONS. Some water is diverted between Weiser and the station near Murphy by pumping. REGULATION. Diurnal fluctuations during periods of low water due to operation of Swan Falls power plant above. ACCURACY. Stage-discharge relation permanent. Rating curve well defined Gage read to hundredths once daily. Daily discharge ascertained by apply ing daily gage height to rating table. Records good, except for extremely low water for which they are fair, because owing to diurnal fluctuations caused by operation of Swan Falls power plant one daily gage reading may not be true index of mean daily flow. COOPERATION. Gage-height record furnished by United States Weather Bureau. Discharge measurements of Snake River at Weiser, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Feb. 18 5.87 25,800 July 1 C. W. Kief...... 5.27 22,000 24 __ .do...... 5.00 21,300 27 ..... do .- _... .. 2.30 8,460 Mar. 19 Fiedler and Johnson _ 8.46 42,400 Aug. 26 . __ do ___ ...... 2.17 7,940 Apr. 28 6.88 30,700 Sept. 14 .....do- ...... 2.40 8,530 May 28 . __ do. .-. .. 12.64 74,800 SNAKE EIYEE 41 Daily discharge, in second-feet, of Snake River at Weiser, Idaho, for the year end ing Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept, 1 9,610 14,600 19,600 27,300 17,400 23,000 29,900 31,300 75,000 21,800 7,810 7,470 2.... 9,240 15,500 19,000 23,600 17,000 25,400" 30,600 30,600 76,700 20,700 7,810 7,810 3, 9,990 15,000 18,500 26,100 16,000 27,300 31,300 32,600 78,200 18,000 7,810 7,810 4 9,990 16,000 18,000 28,600 16,500 32,600 31,300 34,000 78,200 17,000 7,810 7,810 5 9,610 15,500 17,400 28,600 16,500 38,900 32,000 32,600 79,100 15,000 ,7,810 8,160 6 10,800 15,500 16,000 26,700 16,000 43,300 32,000 36,100 79,100 14,100 7,470 8,160 7 10,800 15,500 16,000 26,100 16,000 46,200 30,600 38,800 78,200 13,300 7,470 8,160 8 10,400 15,500 16,500 22,400 16,000 44,000 29,300 39,700 79,100 12,400 7,470 8,510 9 . 9,990 15,500 17,000 20,700 15,000 42,600 29,900 42,600 79,100 10,800 7,470 8,510 10 10,800 15,500 17,000 19,000 15,500 36,800 29,900 47,000 80,700 11,600 7,810 8,510 11 12,000 15,000 17,400 19,000 21,800 35,400 30,600 52,300 78,200 11,200 7,810 8,510 12 11,600 15,000 17,000 17,400 31,300 33,300 29,900 56,100 75,800 10,800 7,810 8,510 13 12,800 17,000 17,000 16,000 29,900 32,600 34,700 54,600 75,000 9,990 7,810 8,510 14 11,200 16,500 16,500 16,000 32,600 32,000 36,100 53,800 73,400 9,610 7,810 8,510 15 11,600 16,000 15,500 17,000 34,000 32,600 37,500 54,600 70,200 9,240 7,810 8,510 16 12,000 15,500 15,500 16,000 36,100 33,300 34,700 57,700 65,500 8,870 7,810 8,870 17 12,800 14,600 15,500 15,000 32,600 36,100 32,600 60,800 62,400 8,510 -7,810 8,870 18 13,300 16,000 15,000 17,000 26,100 36,800 32,600 66,300 58,400 8,510 7,810 9,240 19 13,300 25,400 15,000 25,400 24,800 43,300 34,000 68,600 53,400 8,510 1,m 9,990 20-.. 15,000 26,100 15,000 23,600 23,000 44,000 35,400 76,600 48,500 7,810 7,810 9,990 21 14,600 23,000 15,500 22,400 22,400 39,700 36,100 70,900 45,500 8,160 7,810 9,990 22 16,500 20,700 15,000 21,200 21,200 34,700 36,100 82,300 44,000 7,810 7,810 8,870 23 15,500 20,100 15,000 20,700 20,700 32,600 34,700 83,100 40,400 7,810 7,810 8,160 24 16,000 20,100 15,000 20,100 20,100 32,600 35,400 79,100 36,800 7,810 7,810 7,810 25 16,000 20,100 15,500 20,100 20,100 34,700 36,800 75,800 34,000 7,810 7,810 7,470 26 17,000 18,500 15,500 17,400 20,700 32,600 34,700 75,800 31,300 7,810 7,810 7,810 27 17,400 24,200 16,000 17,400 21,800 32,000 33,300 77,400 28,600 8,160 7,810 8.160 28 16,500 21,800 15,500 18,000 21,800 30,600 32,000 75,000 24,800 7,810:, 7,810 8,160 29 15,000 20,100 16,500 17,000 29,900 31,300 74,200 22,400 7,810 7,810 8,510 30 15,000 19,000 18,000 17,000 __. _^_ 29,900 32,600 75,000 21,800 7,810 7,470 8,870 31 15,500 ~-j-__ 32,600 16,000 29,900 75,800 7 140 7,470 NOTE. Discharge interpolated June 19. Monthly discharge of Snake River at Weiser, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off Montb in acre-feet Maximum Minimum Mean 17,400 9,240 13,000 799,000 26,100 14,600 18,000 1,070,000 32,600 15,000 16,900 1,040,000 28,600 15,000 20,600 1,270,000 36,100 15,000 22,200 1,230,000 TWat*ph 46,200 23,000 34,800 2,140,000 37,500 29,300 32,900 1,960,000 83,100 30,600 58,600 3,600,000 80,700 21,800 59,100 3,520,000 July . 21,800 7,140 10,800 664,000 7,810 7,470 7,740 476, TOO 9,990 7,470 8,470 504,000 83,100 7,140 25,200 18,300,000 42 SUE.FACE WATER SUPPLY, 1921, PART XII B SNAKE RIVER AT RIP ARIA, WASH. LOCATION. In sec. 31, T. 13 N., R. 38 W., at Oregon-Washington Railroad & Navigation Co.'s bridge at Riparia, Whitman County. DRAINAGE AREA. 102,000 square miles (measured by United States Weather- Bureau) . RECORDS AVAILABLE. October 1, 1915, to September 30, 1921. Gage height record during parts of May and June, 1900 to 1902, May 1 to November 30, 1904, July'1,1905, to December 31, 1906, February 1, 1908, to June30,1910, and August 1, 1910, to February 28, 1917, obtained and published by United States Weather Bureau. .! GAGE.-^-Chain gage on railroad bridge installed September 12, 1917; read by W. W. Pickett, jr. Previous gage was vertical staff in three sections referred to same datum; the highest section on first bridge pier from right bank and the lower sections on upper draw guard of bridge. DISCHARGE MEASUREMENTS. Made from railr6ad bridge. EXTREMES OF DISCHARGE. vlaximum stage recorded during year, 19.0 feet May 20 (discharge, 270,000 second-feet); minimum stage recorded, 1.5 feet August 31 (discharge, 16,700 second-feet). 1916-1921: Maximum stage recorded that of May 20, 1921; minimum stage recorded, 0.1 foot August 28 to September 5, 1919 (discharge, 10,900 second-feet); discharge may have been less in December, 1919, when stage- discharge relation was affected by ice. Maximum stage determined from high-water mark, as published by the United States Weather Bureau, 2^.7 feet, June 5, 1894 (discharge, 409,000 second-feet, estimated by extending rating curve). CHANNEL AND CONTROL. Control for low stages is sand and gravel channel above Texas Rapids; shifting. For high stages control is solid lava bed of Texas Rapids half a mile below gage; permanent. ICE. Stage-discharge relation occasionally affected by ice. DIVERSIONS. A large amount of water is diverted above gage for irrigation, REGULATION. Flow is partly regulated by storage in Jackson Lake reservoir (capacity, 847,000 acre-feet), Arrowrock reservoir (capacity, 280,000 acre- feet), Deer Flat reservoir (capacity, 177,000 acre-feet), and in other smaller reservoirs in the basin; also by diversions for irrigation. ACCURACY. Stage-discharge relation for low water changed slightly on May 20; not affected by ice. Rating curves well defined. Gage read to half-tenths ' once daily. Daily discharge ascertained by applying daily gage height to fating table. Records good. Discharge measurements of Snake River near Riparia, Wash., during the year end ing Sept. 30, 1921 Gage Date Made by height Discharge Feet Sec.-ft. June 24- 10.62 122,000 25 Aug. 23 R. B. Kilgore ...... __ __ ...... __ ,- ..- - . 1.75 18,200 24 1.73 18,200 TRIBUTARY BASINS Daily discharge, in second-feet, of Snake River at Riparia1 Wash., for the year ending Sept. SO, Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1. _ .- _ . 21,800 30,500 39,600 64,«00 35,000 52,900 76,500 95,300 212,000 83,500 23,700 17,300 2 __ ...... 21,800 30,500 37.700 61,000 35,000 56,200 84,900 '98,300 216,000 82,100 23,000 17,300 3.. ... 21,800 29,600 36,800 65,900 34,100 65,900 90,800 104,000 223,000 76,500 22,300 -17, 900 4. .... 26,200 28,700 37,700 77,900 33,200 77,900 98,300 101.000 229,000 72,400 22,300 17,900 5...... 30,500 27,800 36,800 69,800 33,200 109,000 99,800 108,000 234,000 65,900 22,300 18,500 6...... 28,700 27,800 35,000 64,600 33,200 96,800 89,300 114,000 241,000 62,200 21,600 18,500 7 27,000 27,800 34,100 61,000 33,200 87,800 84,900 134,000 239,000 57,400 21,600 18,500 8..... __ . 29,600 27,800 31,400 55, 100 31,400 84,900 79,300 153,000 239,000 55,100 20,900 18,500 9-...... 32,300 27,800 31,400 49,600 29,600 75,100 73,700 155,000 241,000 51,800 20,900 18,500 10 . 29,600 27,000 31,400 47,500 33,200 71,100 72,400 157,000 239,000 50,700 20,900 18,500 11.. 27,800 26,200 32,300 45,600 33,200 69,800 73,700 162,000 232,000 47,500 20,900 18,600 12 .. 28,700 26,200 34,100 42,500 37, 700 69,800 77,900 169,000 229,000 45,600 20,900 18,500 13 _ . 30,500 26,200 33,200 40,500 64,600 69,800 87,800 166,000 220,000 44,500 19,700 18,500 14...... 30,500 26,200 33,200 37, 700 69,800 69,800 103,000 169,000 216,000, 40,500 19,700 18,500 15...... 30,500 28,700 32,300 35,900 77,900 69,800 104,000 187, 000 214,000 38,600 19,700 18,500 16...... 32, 300 28,700 31,400 35,900 89,300 68,500 101,000 205,000 194,000 37,700 19,100 18,500 17...... 31,400 29,600 30,500 35,000 80.700 68,600 96,800 220,000 176, 000 36,800 18,600 18,500 18...... 31,400 32,300 29,600 35,000 79,300 131,000 95,300 227, 000 162,000 35,000 18,500 18,500 19 .. _ . 30,500 35,000 28,700 39,500 64,600 126,000 108,000 245,000 149,000 33,200 18,500 18, 500 20 .. . 31,400 46,500 28,700 43,500 52,900 119,000 109,000 270,000 136,000 32,300 18,500 19,100 21...... 30,500 57,400 29,600 49,600 50,700 116,000 109,000 263,000 126,000 31,400 18,500 20,900 22 30,500 52,900 28,700 44,500 47,500 95,300 117,000 261,000 124,000 29,800 18,500 23,700 23 30,500 47,500 28,700 42.500 46,500 90,800 141, 000 259,000 122,000 28,200 18,500 24,400 24..... __ . 33,200 46,600 28,700 38,600 45,500 82,100 138,000 250,000 120,000 28,200 17,900 25,100 25. _ . __ . 31,400 45,500 27,800 35,800 45,500 77,900 124,000 243,000 120,000 26,600 18,500 18,600 26 .. __ . 31,400 45,500 28,700 36,800 46,500 73,700 116, 000 245,000 116,000 26,60» 17, 900 17,900 27...... 31,400 46,500 28,700 36,800 47,500 72,400 106,000 254,000 109,000 26,600 17,300 17, 300 28.. .. 31,400 45,500 29,600 40,500 49,600 73,700 101,000 252,000 101,000 25,800 17,300 17,300 29 __ . 31,400 46,500 28,700 35,000 75,100 99,800 232,000 93,800 25,100 17,300 17,300 30 __ . 33,200 42,500 32,300 35,000 75,100 98,300 212, 000 89,300 25,100 17,300 17,900 31 . 42,500 35,000 75,100 211,000 24,400 16,700 NOTE. Gage not read Nov. 18; discharge estimated by interpolation. Monthly discharge of Snake River at Riparia, Wash., for the year ending Sept. 30, Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 33,200 21,800 29.700 1,830,000 57,400 26,200 35,600 2,120,000 42,500 27,800 32,300 1,990,000 77,900 35,000 46,400 2,850,000 89,300 29,600 48,600 2,700,000 131, 000 52,900 82,200 6,060,000 April...... 141,000 72,400 98,600 5,870,000 270,000 95,300 191,000 11, 700, 000 241,000 89,300 179,000 10,700,000 July ___ ...... 83,500 24,400 43,500 2,670,000 23,700 16,700 19,700 1,210,000 25,100 17,300 18,900 1,120,000 270,000 16, 700 68, 800 49,800,000 TRIBUTARY BASINS HENRYS FORK NEAR LAKE, IDAHO LOCATION. In sec. 36, T. 15 N., R. 43 E., 400 feet below Yellowstone highway bridge, 3 miles below Henrys Lake, and 6 miles south of Lake post office, Fremont County. Dry Creek enters between station and Henrys Lake outlet. DRAINAGE AREA, Not measured. 44 -B RECOBDS AVAILABLE. May 17, 1920, to September 30, 1921. GAGE. Vertical staff on left bank; read by A. A. Lehmann. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Bed composed of cobblestones and gravel; fairly perma nent. Two channels at high stages. EXTREMES OF DISCHARGE. Maximum stage recorded, 1.90 feet at 2 p. m. on June 14 (discharge, 314 second-feet); minimum stage, 0.70 foot on August 25, Au gust 29 to September 1, September 17-19, 26, and 28-30 (discharge, 56 second-feet). 1920-1921: Maximum stage recorded, 2.61 feet at 5.20 p. m. on May 17, 1920 (discharge, 487 second-feet); minimum stage, 0.60 foot September 4 and 5, 1920 (discharge, 49 second-feet). ICE. Stage-discharge relation seriously affected by ice. Records discontinued during winter. DIVERSIONS. None above station. REGULATION. None. ACCURACY. Stage-discharge relation not permanent. Standard rating curve well denned below 250 second-feet and fairly well defined above that point; two parallel curves used. Gage read to hundredths daily. Daily discharge obtained by applying staff gage readings to rating table and by shifting- control method except as noted in footnote to daily-discharge table. Records fair. COOPERATION. Several discharge measurements furnished by North Fork Res ervoir Co. Discharge measurements of Henrys Fork near Lake, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft, Feet Sec.-ft. D. G. Martin o...... 61.40 200 Aug. 12 C. A. McClelland..... 0.75 70.3 July 27 .. do...... 83 81.6 23 .76 67.9 "Employee of North Fork Reservoir Co. & Gage height computed from upper gage reading. Daily discharge, in second-feet, of Henrys Fork near Lake, Idaho, for the year ending Sept. SO, 1921 Day Oct. Apr. May June July Aug. Sept. Day Oct. Apr. May June July Aug. Sept. 1.... 67 213 229 202 75 56 16.... 67 "268" 128 268 118 76 60 2.... 71 ___ 191 224 224 75 60 17 76 139 273 114 67 56 3... 67 160 235 202 71 65 18 82 264 160 268 110 67 56 4 67 181 235 202 71 75 19 86 257 139 268 98 62 56 5 63 170 213 181 67 78 20 102 257 139 242 98 58 65 6... 63 181 235 176 67 71 21.... 116 250 160 246 98 67 65 7... 58 _ 185 257 172 67 65 22.... 126 242 139 224 96 67 65 8... 63 202 268 164 67 71 23.... 122 242 181 224 94 67 65 9 67 . __ _ 181 246 155 69 71 24.... 86 235 202 224 94 60 60 10 67 160 246 , 139 75 71 25-.. 106 224 170 220 90 56 60 11 67 134 246 139 69 71 26 _ . 106 213 181 224 86 60 56 12 71 ___ 118 246 134 69 71 27 86 181 213 224 1 82 63 60 13 67 _ __ 128 268 126 76 67 28 . 76 181 246 213 82 . 60 56 14 63 ___ 118 314 122 76 63 29 67 181 246 20T- 78 56 56 15 58 __ i. 118 268 118 76 60 30 67 160 235 191 78 . S6 56 31 67 235 75 56 NOTE. No record obtained Nov. I to Apr. 16, no gage-height record Oct. 31 and Apr. 21; discharge stimatedand interpolated. TRIBUTARY BASINS Monthly discharge of Henrys Fork near Lake, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-ofl in Month acre-feet Maximum Minimum Mean 126 58 78 4,800 April 17-30...,..-. _ ...... ____ . _____ ...... 268 160 225 6,250 246 118 173 10,600 314 191 242 14,400 July ...... 224 75 127 7,810 August ______- __ , ______. _ 76 56 66.7 4,100 78 56 63.6 3,780 NOTE. See footnote to table of daily discharge. HENRYS FORK AT WARM RIVER, IDAHO LOCATION. In sec. 12, T. 9 N., R. 43 E., 300 yards above mouth of Warm River and half a mile above Warm River railroad station, in Fremont County; above all main tributaries. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. September 3, 1910, to March 22, 1915; April 3, 1918, to September 30, 1921. GAGE. Vertical staff on left bank; read by Axel Anderson. No change in datum. DISCHARGE MEASUREMENTS. Made from cable at gage. CHANNEL AND CONTROL. Bed of stream composed of cobbles, gravel, and sand. Stage-discharge relation at times affected by growth of moss; conditions with this exception are reasonably permanent. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 6.85 feet at 4 p. m. May 5 (discharge, 3,170 second-feet); minimum stage recorded, 3.8 feet January 10 and 11 (discharge, 623 second-feet). 1910-1915; 1918-1921: Maximum discharge, 3,390 second-feet May 16, 1920; minimum discharge, 623 second-feet January 10 and 11, 1921. ICE. Stage-discharge relation not seriously affected by ice. Mush ice reported present in the channel at various times for short periods. DIVERSIONS. Practically none above station. REGULATION. None. ACCURACY. Stage-discharge relation practically permanent. Standard rating curve well defined below 2,200 second-feet. Gage read to half-tenths daily. Daily discharge ascertained by applying mean daily gage height to rating table except as noted in footnote to daily-discharge table. Records good excepyt during May and June, for which they are fair. Discharge measurements of Henrys Fork at Warm River, Idaho, during the year ending Sept. 80, 1921 Gage Dis Gage Dis-* Date Made by height charge Date Made by~ height charge Feet St£,~ft. Feet Sec.-ft. 3.97 703 C. A. McClelland ..... 4.85 1,350 Apr.|20 C. A. McClelland.--. . 5.36 1,780 July 29 do ...... 4.51 1,090 May^23 -...do-. -....-.... 5.85 2,160 Sept. 27 June 12 . .do ...... 5.60 1,990 4.41 993 46 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Henrys Fork at Warm River, Idaho, for the year ending Sept. 80, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 ___ ... _ .. RfiQ 904 779 869 779 803 ftfiQ 1,810 o oon 1 360 1,080 1,050 2...... 869 (MM 772 869 779 ono 869 2,120 2,580 1 360 1,080 1,050 3 ...... 869 904 772 fiflQ 803 938 2,340 9 ^4ft 1,360 1,050 1,050 4 _ ...... QfiQ Qf\A 779 836 779 803 1,010 2,820 2,340 1 340 1,050 1,050 5. __ ...... 869 904 779 836 779 QAO 940 3,170 2 onn 1 19A 1,050 1,050 6...... _ . 869 904 772 836 710 803 869 1,320 1,050 1,080 7 ...... 869 904 772 836 680 803 OfiQ 3,020 1,280 1,050 1,080 8..-...- .... 869 904 803 7QO 680 803 noo 9 A3n 9 91 A 1 9fifl 1,050 1,080 9...... 869 904 803 728 740 803 1,050 2,720 2,160 1,240 1,050 1,080 10 ...... , 904 0(1/1 803 623 740 OAQ 1,080 2,340 9 ftR/1 i o/in 1,050 I ftQrt ll...... 938 904 sni 623 cno 803 1,200 2,260 2,030 1,200 1,050 1,080 12...... 938 904 825 740 803 803 1 360 2,260 1,980 1,200 1,050 1,080 13...... 938 904 847 803 803 803 1,440 2,210 1,900 1,200 1,050 1,080 14...... 938 904 869 869 803 803 1,440 2,160 1,900 1,200 1,050 1,050 15...... 938 oru ftflQ fttiQ 7QO fifM 1,440 1,810 1 200 1,050 1,050 16. __ ...... 938 869 869 QAQ 761 803 1,440 2,260 1,770 1,200 1,050 1,050 17...... 938 869 869 869 740 803 1,520 2,350 1,720 1,160 1,050 1,050 18- _ ...... 938 869 869 869 680 803 1,640 2,440 1,680 1,160 1,050 1,050 19...... 938 869 869 SfiQ 740 803 1,720 2,720 1,160 1,050 1,050 20 ...... 938 869 803 869 803 836 1,810 2,540 1,560 1,120 1,050 1,050 21 ...... 938 869 710 803 803 836 1,720 2,390 1,520 1,120 1,050 1,050 22 ...... 938 869 710 803 740 836 1,560 2,260 1,520 1,120 1,050 1,050 23. . 938 869 710 803 740 836 1,850 2,210 i 4sn 1,120 1,050 1,050 24..:...-...... 938 869 710 740 740 836 1,680 2,210 1,480 1,120 1,080 1,050 25. _ ...... 938 869 710 740 740 836 1,520 2,300 1,480 1,120 1,080 1,050 26. . _ 938 869 710 803 740 836 1,480 2,340 1,440 1,120 1,050 1,050 27.. _ .... __ , 938 904 710 803 803 836 1,480 2,260 1,440 1,120 1,050 1,030 28 . ... 938 772 710 803 803 836 1,480 2,630 1,400 1,080 1,050 1,050 29- _ .... __ . 938 772 740 803 836 1,480 3,020 1,400 1,080 1,050 1,050 30 ..-. ,. 938 772 803 788 869 1,720 2,720 1,360 1,080 1,050 1,050 31 . 921 869 772 869 2,770 1,080 1,050 NOTE. No gage-height record Oct. 17,31, Dec. 10,12,13,25,26, Jan. 1,8,17-19,30, Feb. 15,16, Apr. 6, May 17, July 4; discharge interpolated. Monthly discharge of Henrys Fork at Warm River, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 938 869 916 56, 300 904 772 878 52,200 869 710 787 48,400 869 623 806 49,600 803 680 758 42,100 869 803 818 50^300 April ...... 1,850 869 1,350 80t 300 3,170 1,810 2,470 162,000 2,820 1,360 1,860 111,000 July ...... 1,360 1,080 1,200 73,800 1,080 1,050 1,050 64,600 1,080 1,030 1,060 63,100 3,170 623 1,160 844,000 HENRYS FORK NEAR ASHTON, IDAHO LOCATION. In T. 9 N., R. 42 E., a quarter of a mile below Ora highway bridge, 3 miles below hydroelectric power plant of Ashton & St. Anthony Power Co., and 5 miles southwest of Ashton, Frernont County. Station was for merly maintained at Ora highway bridge, a quarter of a mile upstream; described in previous reports as " North Fork of Snake River near Ora Idaho." Records at old and new stations are comparable. DRAINAGE AREA. 1,040 square miles. TRIBUTARY BASINS 47 RECORDS AVAILABLE. August 20, 1902, to June 30, 1909; April 20, 1920, to September 30, 1921. GAGE. Stevens eight-day water-stage recorder on right bank; installed April 25, 1921, and referred to vertical staff gage. Gage read by Harold Fuqua. Prior to 1920 vertical staff at different datum attached to crib pier of Ora highway bridge. DISCHARGE MEASUREMENTS. Made from highway bridge or cable one-quarter of a mile above gage. CHANNEL AND CONTROL. Bed composed of coarse gravel. Control not well defined; shifts slightly during high stages. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 2.21 feet on May 5 and 6 (discharge, 4,140 second-feet); minimum stage recorded, 0.76 foot at 8 p. m. September 11 (discharge, 1,140 second-feet). 1902-1909; 1920-1921: Maximum stage recorded, 4.50 feet (bridge gage) May 20, 1904 (discharge, 5,370 second-feet); minimum stage, 1.80 feet (bridge gage) on March 18-19, 1903; minimum discharge, 910 second-feet February 4-7, March 5-20, and March 28 to April 7, 1906. ICE. Stage-discharge relation not seriously affected by ice. Observations dis continued during winter. DIVERSIONS.: None above station. REGULATION. None except that due to operation of gates at dam of Ashton & St. Anthony power plant 3 miles above station. ACCURACY. Stage-discharge relation practically permanent. Standard rating curve well defined. Operation of water-stage recorder satisfactory April 25 to September 30; several staff readings made April 9-24. Discharge obtained by applying mean daily gage height to rating table or by inter polation. Records good. Discharge measurements of Henrys Fork near Ashton, Idaho, during the year ending Sept. SO, 1921 [Made by C. A. McClelland] Gage Dis Gage Dis Gage Dis Date height charge Date height charge Date height charge Feet Sec.-ft. Feet Sec.-ft. Feet Sec.-ft. Apr. 16... _ ... 1.16 1,900 2.10 3,920 July 22...... 0.95 1,500 25 1.32 2,220 June 11...... 1.61 2,780 .87 1,320 Daily discharge, in second-feet, of Henrys Fork near Ashton, Idaho, for the year ending Sept. SO, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1.. _ 2,550 3,910 1,720 1,480 1,380 16. _ . 1,900 3,340 2,300 1,500 1,400 1,340 2. _ . 2,970 3,800 1,780 1,400 1,360 17..... 1,940 3,680 2,300 1,480 1,380 1,340 3..... 3,360 3,470 1,840 1,400 1,340 18 _ .. 1,980 3,760 2,220 1,480 1,380 1,460 4. _ . 3,520 3,300 1,820 1,380 1,400 19 .. 2,010 3,890 2,140 1,480 1,300 1,400 s 3,890 3,230 1,780 1,360 1,500' 20..... 2,050 3,740 2,120 1,460 1,340 1,400 6. __ 4,070 3,160 1,720 1,360 1,460 21. .... 2,090 3,490 2,100 1,480 1,320 1,360 7. __ 3,960 3,100 1,630 1,380 1,400 22..... 2,130 3,340 2,060 1,460 1,300 1,380 8-.... 3,890 2,970 1,700 1,320 1,290 23 .. 2,170 3,210 1,960 1,340 1,290 1,360 9..... 1,210 3,890 2,990 1,720 1,340 1,380 24..... 2,200 3,140 1,900 1,380 1,320 1,320 10. .... 1,350 3,760 2,900 1,590 1,340 1,500 25. .... 2,240 3,210 1,900 1,400 1,320 1,320 2,800' 11.. ... 1,490 3,470 1,610 1,340 1,210 26. .... 2,080 3,300 1,900 1,440 1,340 1,300 12. .... 1,640 3,250 2,720 1,550 1,340 1,190 27. .... 2,000 3,230 1,860 1,440 1,340 1,300 13. .... 1,780 3,300 2,610 1,550 1,360 1,320 28. .... 1,980 3,520 1,840 1,460 1,340 1,300 14- . 1,920 3,250 2,480 1,590 1,360 1,290 29..... 2,040 3,980 1,800 1,400 1,340 1,300 15. . 1,910 3,250 2,380 1,550 1,400 1,320 30.. ... 2,280 3,890 1,700 1,400 1,340 1,300 31 ..... 3,650 1,380 1,400 NOTE. No record obtained Oct. 1 to Apr. 8. No gage-height record Apr. 10-13, 15, 17-24; discharge interpolated. 48 SURFACE WATEB SUPPLY, 1921, PAKT XII B Monthly discharge of Henrys Fork near Ashton, Idaho, for the year ending Sept. SO 1921 Discharge in second-feet Run-off in Month acre-feet Maximun Minimum Mean 2,280 1,210 1,930 84,200 4,070 2,550 3,510 216,000 3,910 1,700 2,530 151,000 July - . . 1,840 1,340 1,550 95,300 1,480 1,290 1,360 83,600 1,500 1,190 1,350 80,300 710,000 NOTE. See footnote to table of daily discharge. DIVERSIONS FROM |HENRYS FORK BETWEEN ASHTON AND ST. ANTHONY GAGING m STATIONS, IDAHO Between Ashton and St. Anthony [gaging stations six separate canals divert water from Henrys Fork for irrigation. Gaging stations are maintained at head ing of each canal by the United States Geological Survey for the Idaho State Department of Reclamation to facilitate distribution of the water. Records are available from June 1, 1919, to September 30, 1921. Stage-discharge relation on most of the canals affeeted by growth of aquatic plants or by operation of check gates. Rating curves well defined. Gages read to hundredths daily except during September, when occasional readings were made. Records good. Combined daily discharge, in second-feet, of canals diverting from Henrys Fork be tween Ashton and St. Anthony gaging stations for the irrigation season of 1921 Day June July Aug. Sept. Day June July Aug. Sept. !.._ . . .. 789 952 884 424 18 1,200 1,000 516 269 2...... 741 896 728 417 17 1,140 939 502 269 3...... 734 906 633 414 18 1,060 990 482 269 4...... 693 932 625 384 19 1,070 982 483 268 S . 750 851 597 381 20 . 1,020 993 481 267 267" 6 ... 733 817 638 378 21 1,030 1,020 485 7...... 898 708 630 375 22 .. . 975 806 482 266 8...... 999 599 670 372 23 . . 993 761 436 266 9 . . 1,070 931 661 362 24 1,030 760 458 266 10...... 1,130 925 296 OR 1,100 806 468 309 11...... 1,140 934 720 288 28 1,080 811 465 309 12...... 1,160 859 713 277 27 1,090 811 445 13...... 1,180 923 655 267 28 1,110 791 429 309 14...... 1,190 950 655 267 29 1,130 807 437 309 15...... 1,270 1,000 597 267 30 1,050 820 439 309 31 850 434 NOTE. No record obtained Oct. 1 to May 31; discharge interpolated for days of no gage-height record during September. One diversion is above entrance of Fall River and five are below. TRIBUTARY BASINS 49 Combined monthly discharge of canals diverting 'from Henrys Fork between Ashton and St. Anthony gaging stations for the irrigation season of 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 1,270 693 1,020 60,700 July . . _-.-. ..-.. .. .- 1,020 599 875 53,800 884 42P 567 34,900 424 266 314 18,700 168,000 NOTE. See footnote to table of daily discharge. HENRYS FORK AT ST. ANTHONY, IDAHO LOCATION. In sec. 1, T. 7 N., R. 40 E., half a mile upstream from bridge on main street of St; Anthony, Fremont County, and 9 miles below mouth of Fall River. DBAINAGE AREA. Not measured. RECORDS AVAILABLE. March 26, 1919, to September 30, 1921. GAGE. Inclined staff on right bank; read by Klinger and Pincock. DISCHAKGE MEASUREMENTS. Made from cable about 600 fefit below gage. CHANNEL AND CONTROL. Bed of stream composed of coarse gravel and outcrops of lava. One channel at all stages. Control shifts slightly at high stages. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 6.35 feet on June 1 (discharge, 7,140 second-feet); minimum stage, 2.32 feet on July 16 and 17 (discharge, 614 second-feet). 1919-1921: Maximum stage recorded, 6.35 feet June 1,1921 (discharge, 7,140 second-feet); minimum stage recorded, 2.15 feet on July 15 and 16, 1920 (discharge, 545 second-feet). Actual minimum probably occurred on . July 23 and 24,1920 (discharge estimated, 530 second-feet). ICE. Stage-discharge relation seriously affected by ice; observations discontinued during winter. DIVERSIONS. Numerous diversions both above and below station. REGULATION, Flow affected by manipulation of canal head gates above station and by operation of Ashton and St. Anthony power plant about 17 miles upstream. ACCURACY. Stage-discharge relation practically permanent^ Rating curve well defined between 700 and 5,800 second-feet. Gage read to hundredths daily. < Discharge obtained by applying mean daily gage height to rating table, ex- ; cept as noted in footnote to daily-discharge table. Records good. COOPERATION. Part of gage-height record and one discharge measurement fur nished by Utah Power & Light Co. Discharge measurements of Henrys Fork at St. Anthony, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feel 8ec.-ft. Ofet. 18 H. L. Stoner" _ ...... 3.17 1,400 C. A. McClelland .. 3.60 1,900 AprJ 10 C.A. McClelland - 3.24 1,420 July 23 2.47 707 May 3 , ....do...... 5.18 4,670 Aug. 15 .. do...... 2.97 1,040 .do 5.75 5,770 « Employee of Utah Power & Light Co. 50 SURFACE WATER SUPFLY, 1921, PART XII B Daily discharge, in second-feet, of Henrys Fork at St. Anthony, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Mar. Apr. May June July Aug. Sept. 1...... __ 1,230 1 280 1,700 1,230 3,130 7,140 1,450 877 1,180 2.... _ ...... 1,180 1,340 1,700 1 230 3,760 6,160 1,450 911 1,230 3 .. __ 1,180 1,340 1,700 ----- 1,280 4,760 5,750 1,450 1,060 1,340 4. --. .-..- . 1,180 1,340 1,700 1,510 5,900 5,470 1,450 1,030 1,360 5. ... _ ...... 1,340 1,630 6,230 5,680 1,450 1,060 1,390 6...... 1,180 1,450 1,760 6,450 5,580 1,450 1,030 4,510 7 ______1,180 1,480 1,450 5,900 5,260 1,340 1,000 t'450 8 ...... 1,180 1,510 1,450 5,900 5,200 1,160 1,030 1,390 9...... __ .___._. 1,180 1,510 1,450 6,010 5,090 1,080 981 1,340 10...... 1,230 i ^on 1,470 5,790 i stdfi 937 Qftl 1,630 11. _ ..... _ ...... 1,280 1,360 1,630 5,260 4, 640 796 963 1,630 12...... 1 9fiTk 1 ^d(\ 1 760 5,050 4,640 773 NOTE. No record obtained Dec. 5 to Mar. 27 and May 22-31. No gage-height record Oct. 3> 10, 17, 24, 31, Nov. 7,11,14, 21, 25, 28, and Sept. 3; discharge interpolated. Monthly discharge of Henrys Fork at St. Anthony, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Month Rail-off in $ere-feet Maximum Minimum MJean 1,390 1,180 1, 300 79,9dd 1,960 1,280 1,580 94,000 1,700 1,700 1,700 13,500 March 28-31.... __ . __ . __ . __ ... _ ...... 1,230 1,180 1,190 9,440 April -...... 3,130 1,230 2,040 121,000 May 1-21 ___ ...... _ . _ . __ ... __ ...... 6,450 3,130 5,460 227,000 7,140 1,570 3,680 . 219,000 July _ ._ ...... 1,450 614 926 56,900 1,280 877 1,110 68,200 1,630 1,180 1,440 85,700 NOTE. See footnote to table of daily discharge. DIVERSIONS FROM HENRYS FORE BETWEEN ST. ANTHONY AND REXBURG GAGING STATIONS, IDAHO Between St. Anthony and Rexburg gaging stations four separate canals divert water from Henrys Fork for irrigation. Gaging stations are maintained at hea,d- ng of each canal by the United States Geological Survey for the Idaho Staie Department of Reclamation to facilitate distribution of the water. Records are available from June 1, 1919, to September 30, 1921. TRIBUTARY BASINS 51 Stage-discharge relation on most of the canals affected by the growth of aquatic plants or by operation of check gates. Rating curves well defined. Gages read to hundredths daily except during September, when occasional readings were made. Records good. Combined daily discharge, in second-feet, of canals diverting from Henrys Fork between St. Anthony and Rexburg gaging stations for the irrigation season of 1921 Day June July Aug. Sept. Day June July Aug. Sept. 1.... __ . . _ .. 608 700 431 16. 870 673 584 297 2...... 645 846 686 428 17 ...... 878 673 501 298 3 687 692 378 18... .-..-. _ ,773 446 299 4...... 684 01 1 698 368 19 ...... 859 765 418 307 5 ... _ ...... 719 824 752 . 358 20...... _ ... 844 803 388 316 6...... 735 747 747 347 21 ...... 843 786 380 325 T...... 771 733 702 337 22...... 828 855 441 340 8...... 835 707 722 327 23...... 857 819 447 356 9.... _ ...... 808 732 701 321 24 . 864 790 451 372 10.... _ ...... 511 1 702 01 C 25...... 904 784 446 388 11- . . 878 679 681 309 26 900 807 428 391 12...... 751 675 303 27 . 851 821 429 393 13 - . 860 710 673 297 28 643 704 436 .395 14 ...... 868 7 41 661 297 28 683 691 432 398 IS.... _ ...... 864 747 EOO 9Q7 30 546 691 432 401 31 - .. 674 434 NOTE. No record obtained Oct. 1 to May 31. Discharge interpolated for days of no gage-height record during September. Combined monthly discharge of canals diverting fro m Henrys Fork between St. Anthony and Rexburg gaging stations for the irrigation season of 1921 Discharge in second-feet Month Run-off in acre-feet Maximum Minimum Mean 904 546 795 47,300 July...... ___ ... .".. 857 608 752 46,200 August... ______. __ . ___ ...... 752 380 564 34,700 September _____ . __ .... ______.. 431 297 346 20,600 149,000 HEWRYS FORK NEAR REXBURG, IDAHO LOCATION. In sec. 30, T. 6 N., R. 39 E., just below highway bridge, 1 mile below mouth of south channel of Teton River, 7 miles below mouth of main channel of Teton River and 7 miles due west of Rexburg, Madison County; below all tributaries. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 13, 1909, to September 30, 1921. GAGE. Friez water-stage recorder on right bank about 250 feet below bridge; installed April 5, 1913; inspected by Mrs. Fred Monk. Prior to April 5, 1913, vertical staff on right bank 25 feet farther downstream. Datum of gage prior to January 1, 1912, 0.67 foot higher than that of present gage, DISCHARGE MEASUREMENTS. Made from cable a quarter of a mile below gage, from highway bridge above, or by wading. CHANNEL AND CONTROL. Stream bed composed of mud, sand, and fine gravel; shifting. Except at bridge left bank is overflowed at high stages. 52 SUEFACE WATER SUPPLY, 1921, PART XII B EXTREMES OF DISCHARGE. Maximum stage during period from water-stage recorder, 10.12 feet at 8 a. m. June 2 (discharge, 8,300 second-feet); mini mum stage, 2.52 feet at midnight on July 21 (discharge, 507 second-feet). 1909-1921: Maximum discharge that of June 2,1921; minimum discharge, 355 second-feet June 28 and 29, 1919. ICE. Stage-discharge relation seriously affected by ice. Observations discon tinued during winter. DIVERSIONS. A large percentage of the natural summer flow diverted above station. REGULATION. None except that due to operation of head gates of irrigation canals. ACCURACY. Stage-discharge relation not permanent. Standard rating curve well defined; many parallel curves used. Operation of water-stage recorder satisfactory except May 4-7. Staff gage read daily to hundredths June 1 to August 31. Daily discharge ascertained by applying mean daily gage height to rating table except as noted in footnote to daily-discharge table. Shifting-control methods used during many periods. Records fair. Discharge measurements of Henrys Fork near Rexburg, Idaho, during the year end ing Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feel Sec.-ft. Apr. 21 T.R. Newell .. _ .- 5.32 2,620 July 28 C. A. McClelland . __ . 2.70 630 Mnv 12 .....do...... 8.25 % AM 3.08 035 23 .....do . . 8.37 5,700 15 0. A. McClelland ...... 3.28 1,120 .do 9.60 7,890 23 T.R.Newell- __ . ___ 3.56 1,260 20 C. A. McCleUand 6.61 3,540 27 C. A. McClelland . __ . 3.72 1,430 29 .....do...... 4.85 2,240 Sept. 21 G. C. Baldwin..... __ . 4.45 1,870 July 6 .....do...... 4.39 i TAn 29 4.00 1,580 IS J.R. Newell ...... 2.58 530 Daily discharge, in second-feet, of Henrys Fork near Rexburg, Idaho, for the year ending Sept. 30, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 .... 2,520 8,100 2,260 740 1,350 16 .... 4,750 6,440 614 1,220 1,820 2.... 2,790 8,280 2,250 821 1,310 17 .... 4,990 5,930 557 1,350 1,820 3 .... 3,490 8,140 2,050 923 1,360 18 .... 5,550 5,310 527 1,390 1,820 4.... 4,010 7,890 1,940 962 1,520 19 .... 6,250 4,400 515 1,400 1,900 5 .... 4,530 7,700 1 930 968 1,740 20 6,610 3,630 1,360 1,900 6 .... 5,060 7,620 1,750 951 1,860 21 .... 2,610 6,500 3,030 511 1,380 1,940 7.... 5,580 7,660 1,620 901 1,860 22 . ... 2,430 6,060 2,550: 536 1,330 1,860 8 .... 6,100 7,480 1,380 940 1,860 23 . ... 2,250 5,730 2,370 557 1,270 1,820 9 6,060 7,400 1 330 Q91 1,740 24 2,520 5,730 2,280 523 1.280 1,780 10 6,020 7,450 1,130 Ml 1,940 25 .... 2,520 6,030 2,370 536 1,350 1,700 11 5,870 7,260 974 956 1,980 26 2,250 6,320 2,460 591 1,380 1,620 12 .... 5,500 7,070 , 868 968 1,940 27 .... 2,070 6,620 2,370 614 1,390 1,580 13 .... 5,170 7,000 805 951 1,980 28 1,980 7,030 2,370 627 1,410 1,680 14 .... 4,960 6,920 765 979 1,900 29 .... 1,900 7,540 2,280 682 1,390 1,580 15.... 4,750 6,740 696 1,090 1,820 30 2,160 7,940 2,370 706 1,400 1,580 31 .... 8,020 711 1,390 NOTE. No record obtained Oct. 1 to Apr. 20. No gage-height record May 4-7; discharge interpolated. TRIBUTARY BASINS 53 Monthly discharge of Henrys Fork near Rexburg, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean April 21-30 ...... _ ... _____ .. _ - . _ ... _ ...... 2,610 1,900 2,270 45,000 8,020 2,520 5,620 346,000 8,280 2,280 5,430 323,000 July... -.- . , .. - 2,260 511 1,000 61,500 1,410 740 1,150 70,700 1,980 1,310 1,750 104,000 950,000 WARM RIVER AT WARM RIVER, IDAHO LOCATION. In sec. 13, T. 9 N., R. 43 E., at highway bridge half a mile above mouth and half a mile northeast of Warm River, Fremont County. Robin son Creek enters a quarter of a mile below station. DRAINAGE AREA. 144 square miles (measured on Forest Service maps). RECORDS AVAILABLE. January 24, 1912, to March 22, 1915; April 3, 1918, to September 30, 1921. GAGE. Vertical staff on downstream side of new bridge bent, established April 27, 1920; read by Axel Anderson. Original gage at similar location on old bridge destroyed June 24, 1919. Two auxiliary gages used July 10, 1919, to April 26, 1920. All gages at slightly different datum. DISCHARGE MEASUREMENTS. Made by wading near gage. CHANNEL AND CONTROL. Stream bed composed of large cobbles or boulders in gravel drift. Control shifts slightly. Stage-discharge relation affected by growth of aquatic plants. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 2.5 feet May 2-7" (discharge, 609 second-feet); minimum stage recorded, 1,4 feet January 10 and 11 (discharge, 169 second-feet); 1912-1915; 1918-1921: Maximum stage recorded, 2.3 feet (original gage) on June 2, 1912 (discharge, 900 second-feet); minimum siage, 1.4 feet on January 10 and 11, 1921 (discharge, 169 second-feet). ICE. Stage-discharge relation not affected by ice. DIVERSIONS. None above station. REGULATION. None. ACCURACY. Stage-discharge relation changed .slightly December 12 and 13. Rating curve used before change fairly well defined; that used after change well defined below 410 second-feet. Gage read to half~tenths once daily. Discharge obtained by applying mean daily gage height to rating table or by interpolation. Records fair. Discharge measurements of Warm River at Warm River, Idaho, during the year ending Sept, 30, 1921 Gage Dis Oage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. 1.51 too Til Tl A ^H C. A.McCleUand ...... 1 70 Apr. 20 C. A. McClelland 1.85 321 July 29 ..... do...,. r ... 1.60 238 ..... do .. 2.05 406 Aug. 31 1.62 245 54 SURFACE WATEE SUPPLY, 1921, PAET XII B Daily discharge, in second-feet, of Warm River at Warm River, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr.' May June July Aug. Sept. 1...... 9/19 202 221 1QQ 199 199 384 471 304 oqo 2...... 202 991 216 199 199 199 609 497 304 oqo 3...... ,.- 202 202 221 199 1 QQ fiftQ 427 304 232 oqo 4...... __ . 202 202 221 216 1QQ 609 427 3fU OOO" 5- __ ...... 202 202 991 216 199 208 609 427 304 232 9Q91 6 __ . __ .. 202 202 202 216 199 199 609 497 304 232 232 7 __ ...... 202 202 9/19 216 199 199 609 427 286 232 232" 8.. ____ .... 9/19 9/M> One 1 QQ K«9 oqo 9Q91 202 199 199 384 267 232" 9 ___ ...... 202 202 202 1QQ 199 1QQ 1 QQ 384 267 oqo 10...... _ .. 202 202 9fi9 169 too 1QQ 004 267 232 232 11.. ... 202 202 202 169 199 199 471 343 267 999 12 __ ... 202 202 207 199 1QQ 199 471 343 250 OOO 232 13. _____ . 202 202 91 1 199 199 1QQ 471 343 250 232 23? 14...... -- . 202 202 216 1QQ 199 199 232 471 343 250 232 232" 15 _____ ... 202 9fi9 too 199 199 ooo 471 343 OEft 232 oqo 16.. __ .. 202 IflQ 199 199 909 471 343 260 909 oq^ 17 _____ ... . 202 1QQ too 232 471 324 250 OQ9 909* 18 __ ...... 202 O1 a 199 199 1QQ 267 471 304 250 232 232- 19. _ .... 202 202 216 199 199 3O4 471 304 250 232 232 20...... 202 202 216 199 199 199 324 471 304 250 232 232 21...... 202 202 216 199 199 199 IfM. 471 304 250 232 232 22 ______. 202 202 216 199 199 304 471 304 250 232 232 23. _ ...... 202 202 199 199 427 427 304 250 232 232 24 __ .. 9rt9 OftO 216 1QO 1QQ 1QQ 143 427 304 250 939 232 25...... 202 OftO 216 199 199 1QQ 343 427 304 250 232 232 26...... 202 221 91 fi 199 199 199 324 4.1S 304 250 232 232 27 __ ... 202 221 216 199 199 199 343 427 304 232 232 232 28. ______.. 202 221 216 199 199 199 343 427 304 232 232 232 29...... 202 221 216 199 199 343 471 304 232 232 232 30.. ..._... . 202 221 199 1QQ 384 471 278 232 232 232 31.. ______.. 202 216 1QQ 199 471 232 239 NOTE. No gage-height record Oct. 17, 31, Dec. 10, 12, 13, 25, 26, Jan. 1, 8, 17-19, 30, Feb. 15,16, Apr. 5, May 17, and July 4; discharge interpolated. Monthly discharge of Warm River at Warm River, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Month Run-off Maximum Minimum Mean in acre-feet October ______. _____ . ______202 202 202 12,400 221 202 205 12,200 221 202 214 13,200 216 169 201 12,400 February ___ . __ ___ . __ _ _. ___ . ____ ... 199 199 199 11,100 199 199 199 12,200 April...... 427 199 265 15,800 609 384 495 30,400 471 278 350 20,800 July -.. . ..-..-...... -...... -...... -...... 304 232 261 16,000 August ______. ______, __ ...... 239 232 232 14,300 September __ __ . ___ . ______.. __ ..... 232 232 232 13,800 609 169 255 185,000 ROBINSON CREEK AT WARM RIVER, IDAHO LOCATION. In sec. 13, T. 9 N., R. 43 E., at Oregon Short Line Railroad bridge, 300 yards above mouth of creek and a third of a mile northeast of Warm River, Fremont County. DRAINAGE AKEA. About 41 square miles (measured on Forest Service map). RECORDS AVAILABLE. January 24, 1912, to March 22, 1915; April 4, 1918, to September 30, 1921. GAGE. Vertical staff attached to downstream side of pile bent of railroad bridge; read by Axel Anderson. TKIBTJTARY BASINS 55 DISCHAEGE MEASUREMENTS. Made from railroad bridge or by wading. CHANNEL AND CONTROL. Bed of stream composed of cobbles in gravel drift. Control is a well-defined cobble riffle, 150 feet below gage; shifts occasionally. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 3.80 feet on May 5, 9, and 19 (discharge, 698 second-feet); mininum stage recorded, 1.4 feet February 7 and 8 (discharge, 34 second-feet). 1912-1915; 1918-1921: Maximum stage recorded, 4.3 feet jyjay 28, 1912 (discharge, 1,140 second-feet); minimum stage that of February 7 and 8,1921. ICE. Stage-discharge relation affected by ice for short periods. DIVERSIONS. None above station. REGULATION. None. ACCURACY. Stage-discharge relation changed during ice-affected period. Rating curve used before change well defined; that used after change well defined between 80 and 560 second-feet. Gage read to half-tenths daily. Daily discharge obtained by applying mean daily gage height to rating table, except as noted in footnote to daily-discharge table. Records fair. Discharge measurements of Robinson Creek at Warm River, Idaho, during the year ending Sept. 30, 1921 Dis Dis Gage Date Gage Date Made by height charge Made by height charge Feet Sec.-ft. Feet Sed-ft. Jan. 9 ol.81 70.1 July 29 C. A. McClelland ..... 1 Qfl 99 4 May 26 3.50 557 Aug. 31 do 1.88 93 9 .....do ...... 2.12 130 / o Stage-discharge relation affected by ice. Daily discharge, in second-feet, of Robinson Creek at Warm River, Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. I...... 69 62 84 j 67 74 87 290 554 126 94 2...... 69 62 84 II 70'' 67 74 87 354 489 126 109 04 3...... 69 62 Si 67 74 144 468 448 126 102 94 4 69 62 84 76 67 80 164 554 428 126 04 94 5 - . ... fiQ 62 84 69 67 U7 136 698 428 126 94 04 6. _ ...... 69 62 84 69 55 80 109 673 390 126 O4 94 7...... 69 62 84 69 34 74 109 673 354 126 94 Q4 8.. ... -. 69 62 84 70 34 67 109 648 354 126 04 94 9...... 69 62 84 70 44 67 109 698 354 126 O4 94 10 76 62 84 55 67 126 624 306 126 Q4 94 11... __ ...... 91 62 84 67 67 144 624 290 126 04 94 12...:. . 91 62 7O 67 67 164 624 276 126 94 94 13.. . -. 91 62 74 67 67 198 600 261 126 94 94 14...... 91 62 69 67 67 209 600 234 126 04 94 15. . 84 62 69 en 74 175 648 222 126 04 94 16 . 84 62 fiQ 52 74 175 648 OAQ 126 94 04 17... __ ... 84 62 69 60 44 80 198 648 198 126 94 04 18... __ 84 62 69 44 87 234 648 186 126 Q4 Q4 19 . SA 62 62 55 87 261 fiQS Iftfi 126 94 20 ...... 84 62 fiQ 67 80 276 648 186 109 04 94 21... __ ...... 84 62 fiQ 67 80 261 600 175 109 94 04 22...... 84 62 62 74 80 94S 554 109 04 Q4 23...... 84 62 62 74 80 321 510 164 109 (U 04 24... _ ...... 69 69 62 74 80 248 510 154 109 94 94 25 69 76 68 74 80 209 510 154 IflQ 94 94 26 . 69 76 67 74 80 198 532 im 109 94 04 27 .. 69 84 67 74 on 1QQ 510 154 109 94 94 28-. 69 84 68 67 74 80 1 Qft 554 144 ino 94 94 29 ...... 62 84 67 80 198 600 144 106 04 30 ...... 62 84 67 U7 94J2 532 128 109 94 94 31 ...... 62an 67 87 554 109 93 NOTE. No gage-height record Oct. 17,31, Dec. 10,12,13, Jan. 30, Feb. 15,16, Apr. 5, May 17, and July 4; discharge interpolated. Stage-discharge relation affected by ice Dec. 25 to Jan. 3 and Jan. 9-25; mean discharge for periods estimated on basis of temperature and gage records,one discharge measurement and observer's notes. 56 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of Robinson Creek near Warm River, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Run-off Month in acre-feet Maximum Minimum Mean 91 62 75.7 4,650 84 62 66.1 3,930 December 84 62 73.7 4,530 76 64.6 3,970 74 34 61.8 3,430 87 67 77.0 4,740 321 87 185 11,000 698 290 682 35,800 ' 554 128 263 15,600 July- . - .- 126 106 119 7,320 109 93 95.2 5,850 94 94 94.0 5,590 698 34 147 106,000 DIVERSIONS FROM FALL RIVER ABOVE GAGING STATION NEAR SQUIRREL, IDAHO Above the gaging station near Squirrel three separate canals divert water from Fall River for irrigation. Gaging stations are maintained at heading of each canal by the United States Geological Survey for the Idaho State Depart ment of Reclamation to facilitate distribution of the water. Records are avail able from June 1, 1919, to September 30, 1921. Stage-discharge relation of these canals affected by growth of aquatic plants. Rating curves fairly well defined. Gages read to hundredths daily except dur ing September, when occasional readings were made. Records good. « Combined daily discharge, in second-feet, of canals diverting from Fall River above gaging station near Squirrel, Idaho, for the irrigation season of 1921 Day June July Aug. Sept. Day June July Aug. Sept. 1 .. _ . _ .. 26 225 101 70 16.. __ 112 205 98 70 2...... _ ...... 0 237 87 70 17.. . .. __ 109 205 OT 71 3 ___ 0 235 H7 70 1 Q 106 205 QO 72 4...... 0 228 87 fiQ 120 Q9 70 5 __ . - 0 182 86 69 20 .- ...... 131 204 01 74 6 ...... 20 66 86 68 21...... 148 204 90 74 7... _ .... 20 224 76 68 177 1 K7 on 7K 8... __ - __ . 21 237 76 67 23 __ ...... 187 192 90 74 9 . ___ - .. 40 238 75 67 24 _ . _ - 201 190 96 73 10X _ .. __ - 41 238 78 67 OK 200 197 92 7Q 11 .... __ .. __ . 42 239 87 66 26. _ ...... 206 194 90 72 12 ___ _ . 65 239 88 67 27 ...... __ . 206 on 71 13 ___ ...... 58 245 88 67 28. ___ ...... 214 107 90 71 14 ...... 65 247 88 68 29 __ ., .-_ 231 107 73 70 15. __ ..... __ . 96 249 OB RQ sn 231 107 72 70 31...... 106 71 NOTE. No record obtained Oct. 1 to May 31. Discharge interpolated for days of on gage-height record during September. IR1BTJTABY BASINS 57 Combined monthly discharge of canals diverting from Fall River above gaging station near Squirrel, Idaho, for the irrigation season of 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 231 0 102 6,070 July.. . __ - __ - _ ... _ - __ . __ .... ____ 249 66 197 12,100 101 71 87.1 5,360 75 66 70.2 4,180 27,700 NOTE. See footnote to table of daily discharge. FALL RIVER NEAR SQUIRREL, IDAHO LOCATION. In sec. 35, T. 9 N., R. 44 E., 9 miles southeast of Marysville, 4 miles northeast of Squirrel post office, Fremont County. The Marysville canal diverts about half a mile upstream. This station was formerly known as Fall River near Fremont, Idaho. DRAINAGE AREA. 390 square miles. RECORDS AVAILABLE. January 1, 1904, to June 30, 1909; May 2, 1918, to Sep tember 30, 1921. For station at Wilson's sawmill, August 24, 1902, to December 31, 1903. GAGE. Vertical staff on left bank, installed January 1, 1904. Original gage was a vertical staff attached to bridge at Wilson's sawmill 3 miles upstream; established in 1902. Observers, Ernest Luetjen and F. C. Braun. DISCHARGE MEASUREMENTS. Made from cable 200 feet below gage or by wading. CHANNEL AND CONTROL. Stream bed composed of boulders in gravel drift. Control formed by riffle below gage; fairly permanent. Banks high, clean, and not subject to overflow. One channel at all stages. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 4.60 feet at 1 p. m. June 12 (discharge, 3,560 second-feet); minimum stage recorded, 1.79 feet at 8.30 a. m. February 7 (discharge, 346 second-feet). 1904-1909; 1918-1921: Maximum stage recorded, 5.6 feet June 14, 15, and 23, 1918 (discharge, 5,380 second-feet); minimum stage, 1.4 feet April 5, 1905 (discharge, 168 second-feet). ICE. Stage-discharge relation occasionally affected by ice. DIVERSIONS. Three irrigation canals divert above the station. REGULATION. None except that due to head gate changes on canals above station. ACCURACY. Stage-discharge relation changed sligntly January 1 and 2. Rating curve used before change well defined; that used after change well defined below 3,100 second-feet. Gage read to hundredths daily. Daily discharge ascertained by applying mean daily gage height to rating table, except as noted in footnote to daily-discharge table. Records good. Discharge measurements of Fall River near Squirrel, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Jan. 10 E. C. Howard ... 1.83 401 C. A. McClelland t- 4.35 3,090 Apr. 29 July 8 .. do ...... 2.39 754 2 21 622 . .do _ 2.12 589 May 10 C. A. McClelland.. _ . 3.60 2,150 21 W F Dawson 2.08 594 58 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Fall River near Squirrel, Idaho, for the year ending Sept. 80, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept, 1...... __ . 494 443 474 406 373 419 407 872 3,240 1,100 623 457 2 .. 481 443 468 496 373 426 419 863 2,630 1,050 639 457 3-....._ . 481 443 468 469 379 438 482 854 2,420 1,000 654 450 4 ...... 481 430 461 438 373 438 523 890 2,600 974 646 460 5 487 424 474 457 390 450 550 964 2,920 927 623 457 6 ._. 481 424 437 419 368 432 536 1,080 3,000 945 616 463 7...... 481 437 437 407 346 432 502 1,190 2,960 784 616 457 8 ...... 474 424 461 407 368 432 496 1,200 3,080 767 616 457 g 474 430 461 390 362 426 482 2,030 3,180 759 608 476 10 501 437 4JQ 368 396 426 482 2,050 3,080 726 631 469 11 .- 577 437 443 390 407 432 509 2,050 3,140 677 608 509 12 591 449 437 379 419 438 536 2,160 3,560 639 594 457 13 555 461 437 379 444 432 550 2,320 3,300 670 579 457 14 501 461 430 385 438 432 572 2,500 3,450 616 594 457 15 ...... 514 468 424 373 407 413 594 2,550 3,050 594 594 457 16...... __. .... 494 494 437 373 419 413 608 2,590 2,660 623 594 450 17 ..._..-.... 501 514 437 396 379 407 646 2,640 2,210 608 572 450 18 487 570 455 469 368 407 685 2,520 1,900 594 558 482 19 - 487 714 430 444 362 407 819 2,430 1,750 594 550 536 20 . Km 682 430 426 362 396 784 2,350 1,760 586 543 509 21...... 4.87 584 390 362 396 701 2,240 1,650 594 536 509 22. .. .. 487 541 412 373 362 407 670 2,180 1,570 639 536 502 23 -. 481 527 406 368 379 419 670 2,220 1,600 594 529 496 24 . -. 461 406 385 407 646 2,290 1,650 579 616 482 25 JQ7 474 400 379 385 407 608 2,450 1,630 170 616 482 26 443 474 400 dm 390 407 608 2,500 1,530 601 558 482 27 . 437 514 400 419 407 401 616 2,180 1,380 579 536 482 28 JQ7 4ftfi AK1? 407 396 631 1,880 1,310 646 565 469 29 443 474 400 432 396 639 2,460 1,210 631 558 469 30 ... 449 474 389 385 407 701 2,810 1,220 631 536 469 31 437 400 373 4O7 3,080 616 523 NOTE. No gage-height record Nov. 2; discharge interpolated. Monthly discharge of Fall River near Squirrel, Idaho, for the year ending Sept. SO 1921 Discharge in second-feet Run-off Month in acre-feet Maximum Minimum Mean 591 437 485 29,800 714 424 488 29,000 ' 474 389 432 26,600 496 362 407 25,000 February. .. ______. ______. _ . _ ... _ 444 346 386 21,400 450 396 418 25,700 April...... 819 407 589 35,000 3,080 854 2,010 124,000 June ______...... 3,560 1,210 2,350 140,000 July...... __ ...... __ ...... 1,100 579 707 43,500 654 523 586 36,000 536 450 473 28,100 The year __ . ______.... ______3,560 346 779 564,000 DIVERSIONS FROM FALL RIVER BETWEEN SQUIRREL AND CHESTER GAGING STATIONS, IDAHO Between Squirrel and Chester gaging stations nine separate canals divert water from Fall River for irrigation. Gaging stations are maintained at heading of each canal by the United States Geological Survey for the Idaho State Department of Reclamation to facilitate distribution of the water. Records are available from June 1, 1919, to September 30, 1921. TRIBUTARY BASINS Stage-discharge relation' on most of the canals affected by growth of aquatic vegetation or by operation of check gates. Rating curves fairly well defined. Gage read to hundredths daily except during September, when occasional readings were made^ Records good. Combined daily discharge, in second-feet, of canals diverting from Fall River between Squirrel and Chester gaging stations for the irrigation season of 1921 Day June July Aug. Sept. Day June July Aug. Sept.; i ...... ------361 674 547 416 16 ...... 758 57Q 394 276 2 . 190 616 458 421 17...... 744 680 400 268 3...-...... 172 688 494 379 18. 711 610 416 261 4 329 585 537 335 19 717 604 414 261 5 ...... 314 581 517 334 20 792 543 397 259 6...... 323 577 528 329 21 789 563 407 258 7...... 480 544 468 324 22 770 639 408 258 8...... 540 529 486 320 23 . 801 662 403 958 9...... 557 593 464 316 24 808 628 409 267 10... _ ...... 563 559 473 310 25 812 651 433 257 11...... 554 632 433 306 26 816 640 405 266 12 ...... 748 617 435 301 27. 764 550 4/U 236 13 774 668 435 297 28 772 578 409 266 14 770 636 436 290 29 - 467 502 413 9^fi 16 784 605 449 282 30 670 524 414 256 31 . 411 NOTE. No record obtained Oct. 1 to May 31. Discharge interpolated for days of no gage-height record during September. Combined monthly discharge of canals diverting from Fall River between Squirrel and Chester gaging stations for the irrigation season of 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 816 172 622 37,000 July- 674 502 693 36,600 547 394 442 27,200 421 256 295 17,600 The period- ______... __ .. ______.. 118,000 FALL RIVER NEAR CHESTER, IDAHO LOCATION. In sec. 13, T. 8 N., R. 41 E., half a mile above mouth and 2 miles north of Chester post office, Fremont County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 23, 1920, to September 30, 1921. GAGE. -Stevens 8-day water-stage recorder on right bank installed April 29,1921; referred to vertical staff installed August 10, 1920. Record prior to August 10, 1920, obtained from a temporary gage about 200 feet downstream. Observer, G. A. Pincock. DISCHARGE MEASUREMENTS. Made from cable 100 feet downstream or.by wading. CHANNEL AND CONTROL. Stream bed composed of boulders in gravel drift and lava outcrop. Control is well-defined rock ledge immediately below gage. One channel at all stages. O 60 SURFACE WATER SUPPLY, 1921, PART XII B EXTREMES OF DISCHARGE. Maximum stage recorded during period April 29 to September 30, 5.30 feet at 6 p. m. May 29 (discharge, 3,720 secondrfeet); minimum stage 1.28 feet at 9 a. m. July 16 (discharge, 28 secondrfeet), 1920-1921: Maximum stage recorded, that of May 29, 1921 j minimum stage, 0.50 foot (temporary gage) at 11 a. m. July 18, 1920 (discharge, 25 second-feet). ICE. Stage-discharge relation seriously affected by Ice; observations discontinued during winter. DIVERSIONS.- Several irrigation canals divert above station. REGULATION. None except that due to manipulation of canal head gates above the station. ACCURACY. Stage-discharge relation permanent. One rating curve used, well defined below 3,000 second-feet. Operation of water-stage recorder satisfac tory April 29 to September 30. Gage read to hundredths once daily June 1 to August 31. Daily discharge obtained by applying mean daily gage height to rating table, except as noted in footnote to daily-discharge table. Records good. Discharge measurements of Fall River near Chester, Idaho, during the year ending Sept, 80t:i921 [Made by C. A. McClelland] T . . Gage Dis Gage Dis Gage Dis Date height charge Date height charge Date height charge Feel Sec.jL Feet See.-ft, Feet Sec.-ft. Apr. 13- _ ... 2.83 662 4.69 2,800 July 27 1.58 79.6 4.70 2,980 24... _ .. .4.41 2,450 3.07 220 4.57 2,850 3.68 1,500 Sept. 28...... 2.36 350 12. __ .- 4.40 2,490 22 -- 3.19 1,020 Daily discharge, in second-feet, of Fall River near Chester, Idaho, for the year end ing Sept. 30, 1921. Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. SeptV 1 1,000 3,440 540 220 254 16__. 2,480 2,300 67 296 345 2 1,390 3,040 533 250 262 17... 2,730 1,980 103 274 350 3. 1,760 2,640 525 254 296 18... 3,010 1,530 111 250 361 4 2,080 2,630 510- 223 383 19..- 2,90a 1,280 122 234 383 5- 2,780 2,950 m 212 377 20 2,460 1,200 141 223 432 6 .... 2,670 2,970 488 202 361 21 2,170 1,070 159 220 "408 7 2,700 2,840 377 216 366 22... 2, 170 994 108 212 395 8 .... 2,520 2,880 310 ' 227 366 23 2,290 976 86 209 377 9 2,620 3,040 254 227 371 24 ... 2,420: 985 71 ,250 , 371 JO 2,570 2,910 205 238 414 25-- 2,590 947 78 306 361 11 .... 2,910 144 230 38937'7 26 2,640 873 101 , 270 12.... 2' 45u 3,050 113 234 27 ... 2,900 756 130 262 350 13 ... _ 2,420 3,110 101 230 366 28 '3,,390 653 132 274 , 350 14 .... 2,370 3,020 89 234 361 29.-- 661 3,600 966 165 274266' 345 t>6 2,530 2,670 69 246 355 30-- 792 3,360 818 188 345 3,240 205 OKC NOTE. No record obtained Oct. 1 to Apr. 28. Mean of hourly discharge used July 16. TBfflUTARY RAS-INS Monthly, discharge .c$l t ftiver near. Chester, /«r th$,,ypar . pnding - ' ' ' ' Sept. SO, 1921 . Discharge in second-feet Month Run-off, in acre-feet Maximum Minimum Mean April 29-30 ...... ,.l...... r.....l..J:L.. 792 661 726 2,880* May- ~ . . r,. .-._.. ..r.^ 3,600 1,000 2,540 156, OOO 3,440 653 2,050 122,000« July..,. . .___ _. .__.__,., _.__ .._ ____: 540 67 216 . "13, 300? August. ______, __ . ______r_ , , 306 202 243 -.14, 900) September. ______... ______;-... '. 432 284 361 21, 500; The period ______'.,. .331,000 NOTE. See footnote to table of daily discharge. TETON RIVEE NEAR ST. A^THOHY, IDAHO LOCATION. In see. 15, T. 7 N., R. 41 E., half a mile above Oregon Short Line Railroad bridge and 4 miles southeast of St; Anthony, Fremont County. Station was formerly maintained at Hog Hollow highway bridge, three- quarters of a mile upstream; records Comparable. .DRAINAGE AREA.-*-Jiotimeasured. > ' i RECORDS AVAILABLE. April 23, 1903, to June 30, 1909;, April 1^,, 1,920, to Sep tember 30, 1921., GAGE. -Stevens eight-day water-stage recorder on right bank installed May 2, ; ."' 1921. Record^ April 19, 1920, to May 2, 192^ jobfcame^'from present reference gage established April 19. 1920; read1 by W\ F. Dawson and C. A. McClelland; 1(903-1909, vertical staff at a different datum, attached to .: highway bridge three-quarters of a mile upstream','; V , DISCHARGE MEASUREMENTS. Made from cable about 5*0 feet below gage. CHANNEL AND CONTROL. Stream bed composed of fine, compact gravel drift. Control shifts slightly at high stages. EXTREMES OP DISCHARGE. Maximum stage recorded during period May 2 to Sep tember 3Q, from water-stage recorder, 5.92 feBt at 4.30 p. m. June 13 (dis charge, 4,390 second-feet; minimum, stage, 6.61 foot at 6 p. m. September 28 (discharge, 608 second-feet). 1903-1909; 1920-1921c Maximum stage recorded, 6.9 feet at 3 p. m. June I 5, 1909 (discharge, 7,820 second-feet); minimum stage, 1 foot March 12, 1906 (discharge, 88 second-feet). , Both gage heights from Hog Hollow high way bridge gage. ICE. Stage-discharge relation seriously affected by ice; observations discontinued ' *. ; during winter. DIVERSIONS. Several irrigation canals divert in Teton River basin_ about .20 miles above station. R EGULATION. None. ACCURACY. Stage-discharge relation permanent during period. Rating curve well defined. Operation of water-stage recorder-'satisfactory. Also staff .~r; ,fa.gg,read ty.hundred]^ ^^ee, dailv; June 1 -to. fA^ig^3JL.,..D^iily discharge ascertained by applyiag tojmting tobje jn^an 4a%;gage height obtained from inspection of recorder graph. Rec ords good. SURFACE WATER SUPPLY, PART XII B Discharge measurements of Teton River near St. Anthony, Idaho, during the ytetr ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec-ft. Feet Sec. -ft. A.pr, 18 C. A. McClelland ..... a 72 R&R 2.65 1,870 ftfay 2 --..do...... 1.04 873 30 .. do . 2.31 1,640 7 do 2.57 1,850 July 7 ...... do...... 1.46 1,100 24 3.68 2,690 24 ..... do ...... 1.10 892 28 C. A. McClelland ..... 5.19 3,, 850 - .do.....- ...... 87 768 28 5.20 3,860 23 .... . do ...... 71 675 4.54 3,250 Sept. 17 ..... do...... 73 658 10 C. A. Me Clelland ..... 5.60 4,060 28 ..do ...... 65 632 18 W. F. Dawsoh _ ...... 8.98 2,810 Daily discharge, in second-feet, of Teton River near St. Anthony, Idaho, for the year ending Sept. 30, 19&1- Day May June July Aug. Sept. Day May June July Aug. Sept. 1 3,940 1,540 7QQ 691 16 2,170 3,760 983 770 702 2 ...... 875 3,670 1,440 691 17 .' 2,520 3,370 965 753 674 3-...... 3,340 1,370 QftQ 702 18 . 2,950 2,840 953 736 668 4. ___ ...... 1,130 3 OOA 1,290 OAA 769 19 2,910 2,240 953 696 679 3 1,460 3, 490 ' 1,290 521 1 753 20~ ,.:- 2,580 1,920 953 691 707 6 ...... 1,690 3,670 1,120 709 724 21 2,270 1,770 947 685 702 1,780 3,780 1,090 776 702 22 2,240 i,7ia- 929 679 686 8 1,900 3,940 1,070 713 23 2,370 1,840 905 674 674 9 ...... 2,020 4,160 1,070 759 24 ...... 2,620 2,010 887 707 657 10 , 1,940 4,140 1,060 753 787 25 -i 3,010 2,120 899 730 11 1,730 4 140 1,000 one 26 . 3,040 2,090 911 747 646 12 ...... 1,810 4^250 1,050 7«jfl 770 27 3,400 1,960 869 730 646 13...... 1,890 4,310 1,100 747 742 28 3,700 1,840 834 736 630 14- ____ ... 1,880 4,270 1,050 776 724 28 .,.. __ . 3,840 1,780 822 742 630 15 .. 2,040 4,060 1,010 753 713 30 3,900 1,690 805 713 625 31 3,950 7OO 696 NOTE. No record obtained Oct. Z to May 1. Monthly discharge of Teton Rwer near St. Anthony, Idaho, for the year ending Sept. SO, 1921 Discharge in secoad-feet , Run-off in Month acre-feet Maximum Minimum Mean May 2-31 ...... __ ..... __ . ... 3,950 875 2, 350 140,000 4,310 1,690 3,050 . 181,000 July ,. 1,540 799 1,030 63,300 863 674 748 46,000 September ...... ____ ...... 805 625 699 41,600 472,000 NOTE. Ne record obtained Oct. 1 to May 1. DIVERSIONS FROH TETON RIVER BETWEEN GAGING STATION NEAR ST. ANTHONY AND MOUTH OF RIVER, IDAHO Between St. Anthony gaging station and the mouth of the stream 14 separate canals divert water from Teton River for irrigation. Gaging stations are main tained at heading of each canal by the United States Geological Survey for the Idaho State Department of Reclamation to facilitate distribution of the water. Records are available from June 1, 1919, to September 30, 1921. TEIBTITABY SASINS The stage-discharge relation on these canals is affected by growth pf aquati^ plants* , Bating curves are only fairly well defined. Gages read to hvmdredths daily except during September, when occasional readings were made. Records fair. Combined daily discharge, in second-feet, of canals diverting from Teton River be tween St. Anthony gaging station and mouth 6f river for the irrigation season of 1921 Day June July Aug. Sept, Day June July Aug. Sept. 1... - 755 1,030 683 572 16.. 1,070 849 677 377 2.... ___ . _ .. 738 1,010 17...; .- 1 060 673 365 3 .. .- .. 646 963 789 18 1,020 850 650 356 4...... _ .. 673 915 771 499 19 . 878 852 613 345 6...... __ ... - 686 871 741 487 20. .. 861 337 8... - .. 724 781 707 21 989 833 598 328 7...... 733 725 708 460 22...... 1,030 843 588 319 8 . 738 790 699 450 23 1,090 792 564 312 9 722 739 696 441 24 . 1,160 592 304 10. .- 758 785 696 9<; 1,180 788 605 301 \\ 841 784 695 422 26.. 1,150 800 645 301 12 855 765 689 27...... - . 1,060 794 648 301 13..... _ ...... 967 802 653 404 28. -,-. 1,060 738 656 301 14...... 1,020 858 681 394 29... _ ...... 1,060 732 655 301 15 1,020 860 652 387 30. 1,030 696 631 301 31.. 688 621 NOTE. No record obtained Oct. 1 to May 31. Discharge interpolated for days of no gage-height record during September. Combined monthly discharge of canals diverting from Teton River between St. Anthony gaging station and mouth of river for the irrigation season of 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 1,180 646 921 54,800 July...... 1,030 688 821 50,500 789 564 664 40,809 572 301 391 23,300 169,000 NOTE. See footnote to table of daily discharge. CANYON CREEK NEAR NEWDALE, IDAHO LOCATION. In T. 6 N., R. 42 E., one-fourth mile west of Pincock Warm Springs and 14 miles southeast of Newdale, in Madison County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. March 29, 1920, to September 30, 1921. GAGE. Vertical staff on left bank 300 feet below highway bridge; read by S. W. Pincock. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Bed composed of compact gravel; fairly permanent Two channels at low and medium stages. EXTREMES OP DISCHARGE. Maximum stage recorded during period April 17 to September 30, 4.22 feet at 8 a. m. May 28 (discharge, 419 second-feet); minimum stage, 1.01 feet at 7 a. m. September 2 (discharge, 12 second-feet). 1920-1921: Maximum stage recorded, that of May 28, 1921; minimum stage, 1.00 foot at 8 a. m. March 30, 1920 (discharge, 11 second-feet). SURFACE WATER SUPPLY, 1921, PART XII B ICE. Formation of ice prevented by inflow from warm springs. DIVERSIONS. Power canal of Pincock sawmill diverts about three-eighths of a mile upstream; water is returned above station. REGULATION: None except that caused by operation ,of power canal. ACCURACY. Stage-discharge relation practically permanent. Rating curve well defined. Gage read to hundredths daily. Daily discharge obtained by applying mean daily gage height to rating table. Records excellent. Discharge measurements of Canyon Creek near Newdale, Idaho, during the period Apr. 17 to Sept. 30, 1921 [Made by 0. A. McClellend] Gage Dis Gage Dis Date height charge Date height charge Feel Sec.-ft. Feet Sec-ft. May3 .. . 1.63 76.3 June 19 ___ i-.._. _ .. ., __ 1.91 Ill 30...... 3.97 386 Aug. 21 .... 1.05 14.5 Daily discharge, in second-feet, of Canyon Creek near Newdale, Idaho, for the period Apr. 17 to Sept. 30, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 56 346 60 10 13 16 296 , 168 31 15 14 2 73 327 59 19 12 17-__ 44 357 161 29 15 14 3 . 77 324 »u 9Q 19 18 47 369 139 29 14 17 4 119 324 52 27 19 19 51 313 111 27 14 17 5 1 CK 321 51 23 17 20 40 275 27 14 17 161 324 49 18 15 21 42 243 101 26 14 17 7 . 165 316 48 18 15 22 42 216 95 25 13 17 8 216 339 44 17 13 23 46 303 . 94 24 14 17 9 345 43 17 17 24 29 313 93 24 17 16 10 155 346 43 17 18 25 34 324 93 24 19 16 11 210 333 40 17 18 26 33 336 84 23 17 16 12 213 321 40 17 17 27 31 400 80 23 15 15 13 236 289 38 17 17 28 29 41* 73 21 15 15 14 242 37 15 29 32 410 71 21 15 15 303 216 33 16 15 30 38 386 65 21 14 s !5 31 384 20 NOTE. No record Oct. 1 to Apr. 16; discharge interpolated May 1. Monthly discharge of Canyon Creek near Newdale, Idaho, for the period Apr. 17 to Sept. 30, 1921 Discharge in second-feet Run-off .in Month acre-feet Maximum Minimum Mean April 17-30 _ ...... 51 29 39.1 1,090 419 56 255 15,700 346 65 208 12, 400 July ...... 60 20 35.0 2,158 29 13 17.0 1,040 19 12 16.9 946 33,300 TKIBUTABY BASINS 65 WILLOW CREEK NEAR RIRIE, IDAHO LOCATION. In T. 3 N., K. 40 E., at Cutler ranch, 3 miles above mouth of canyon and 6 miles southeast of Ririe, Bonneville County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. December 23, 1916, to September 30, 1921. GAGE. Friez water-stage recorder on right bank installed July 1, 1921; referred to outside vertical staff. Gage used prior to May 1,1917, was a vertical staff on right bank a quarter of a mile upstream. Observers, Harold Lehman and Earle Killian. DISCHARGE MEASUREMENTS. Made from cable 200 feet downstreani from gage or by wading. CHANNEL AND CONTROL. Bed composed of boulders in gravel drift; fairly per manent. Left bank is overflowed at high stages; both banks are brush covered. EXTREMES OP DISCHARGE. Maximum stage recorded during period April 1 to September 30, 11.8 feet at 6.10 p. m. May 3 (discharge, 2,240 second-feet); minimum discharge, 36 second-feet, from water-stage recorder, occurred at intervals during period August 21 to 23. 1916-1921: Maximum stage recorded, 16.3 feet on May 15, ,1917 (dis charge, 4,200 second-feet); minimum stage, 1.91 feet August 27-29, 1919 (discharge, 13 second-feet). ICE. Stage-discharge relation seriously affected by ice; records discontinued during winter. DIVERSIONS. No irrigation canals of any consequence above station. REGULATION. None. ACCURACY. Stage-discharge relation not permanent. Rating curve well defined used October 1 and 2; rating curve used April 3 to September 30 well defined below 1,850 second-feet; and parallel curve used on April 2. Operation of water-stage recorder satisfactory beginning July 1, except July 21-29, when inlet trench silted. Staff gage read to half-tenths 14 times a month in April, May, and June. Daily discharge ascertained by applying to rating table staff gage reading or mean daily gage height obtained from inspection of recorder graph, except as noted in footnote to daily-discharge table. Records good except for April, May, and June, for which they are fair. COOPERATION. Part of gage-height record furnished by Idaho Irrigation District. Discharge measurements of Willow Creek near Ririe, Idaho, during the year ending Sept. SO, 1921 ; Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Mar. 18 E.C.Howard--.-. .. 3.40 139 T. R. Newell ___ .... 4.10 259 Apr. 2 T.R. Newell 3.26 119 July 1 do-. ..- 3.90 225 12 do. 3.96 222 . _ .do..... -- __ . 3.57 156 29 . - do ...... 6.97 950 30 .....do .... a 03 70.0 do ...... 1,840 .....do ._ -,-. .. 2.80 41.8 25 -do . - 7.64 1,100 .....do ...... 2.84 45.0 66 SUEFACE WATEE SUPPLY, 1921, PABT XII B Daily discharge, in second-feet, of Willow Creek near Ririe, Idaho, for the year ending Sept. 80, 1921 Day Apr. May June July Aug. ept. Day Apr. May June July Aug. Sept. 1 . 120 1,390 711 216 70 40 16 367 1,120 382 127 54 4£ 2.... 117 1,820 702 212 84 40 17 424 1,100 , 367 115 53 4rf 3.... 204 2,240 694 214 77 43 18 480 1,120 356 112 51 46 4.... 292 2,040 658 216 74 48 19 551 1,150 345 115 45 47 5 281 1,850 622 209 67 53 20. 622 1,100 334 109 41- 51 6.... 270 1,780 614 197 63 51 21 690 1,050 323 107 38 52 .7 .... 245 1,700 606 175 61 48 22 758 997 316 106 37 51 8 220 1,630 598 162 59 47 23.... 826 1,020 309 104 37 45 9 . 223 1,540 562 159 56 47 24 894 1,050 302 99 42 43 10.... 227 1,450 526 153 56 51 25. 794 1,080 286 93 49 42 11 . 230 1,360 480 153 60 51 26 694 987 270 88 47 42 12.... 230 1,300 434 150 57 47 27 794 894 260 83 46 41 13.... 310 1,230 422 144 59 47 28 894 856 250 78 45 41 14 389 1,180 411 139 56 46 29 945 819 240 72 45 43 15 . 378 1,130 396 134 56 46 30 1,170 769 230 67 47 43 31 719 66 43 t NOTE. No record obtained Oct. 3 to Mar. 31, except measurement Mar. 18. No gage-height record Apr. 1, 3, 5, 7, 9, 10, 13, 15, 17, 19, 21-23, 25, 27, 30, May 2, 4, 6, 7, 9, 10, 12, 14,16, 18,20, 21, 23, 24, 26, 28, 30, June 1, 2, 4,6, 7, 9,11,13,15,16,18, 20, 22, 23, 25, 29, and July 21-29; discharge interpolated except Apr. 1 and July 23, for which it was estimated. Monthly discharge of Willow Creek near Ririe, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean October 1-2. __ _ ...... 43 41 42.0 167 April . .. __ ' 1, 170 117 488 29,000 2,240 719 1,270 78,100 June ______.. __ __ ... .. _ ___ ...... 711 230 434 25,800 July...... 216 66 135 8,300 84 37 54.0 3,320 53 40 46.1 2,740 NOTE. See footnote to table of daily discharge. WILLOW CREEK NEAR IONA, IDAHO LOCATION. In sec. 19, T. 3 N., R. 38 E., at concrete bridge 3 miles northeast of lona, Bonneville County, and 9 miles on main road northeast from Idaho Falls. Boomer canal crosses in a flume 600 feet above station. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. December 22, 1916, to September 30, 1921. GAGE. Vertical-staff attached to downstream face of right abutment to concrete arch bridge; read by C. N. Kemper. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Bed composed of mud, sand, and gravel; shifting. Banks subject to overflow at very high stages. EXTREMES OF DISCHARGE. Maximum stage recorded during period ending Sep tember 30, 7.40 feet at 11.30 a. m. May 4 (discharge, 461 second-feet); minimum stage, 0.95 foot at 9 a. m. November 5 (discharge, 16 second- feet. 1916-1921: Maximum stage recorded, 7.75 feet on May 16 and 17, 1917 (discharge, 603 second-feet); minimum discharge, about . second-foot De cember 31, 1918, January 1, 1919, and January 1-10, 1920. ICE. Stage-discharge relation seriously affected by ice; recoru discontinued during winter. TRIBUTARY BASINS 67 DIVEBSIONS. Sand Creek and irrigation canals divert water above station; definite information not available as to number of canals and quantity of water diverted. REGULATION. Flow regulated at diversion works above station. Several irri gation canals waste water into creek. ACCURACY. Stage-discharge relation not permanent. Standard rating curve fairly well defined; several parallel curves used. Stages subject to sudden fluctuations. Gage read to hundredths daily. Daily discharge ascertained by applying daily gage height to rating table or by shifting-control methods except as noted in footnote to daily-discharge table. Records fair. Discharge measurements of Willow Creek near lona, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-/*. Mar. 18 E. C. Howard ___ ... 1.23 29.5 July 9 T. R. Newell 3.10 144 Apr. 29 , T. R. Newell. -. 4.12 209 30 do ...... 2.62 117 .....do ...... 6.84 416 Aug. 20 .... .do...... 2.49 104 25 do ...... 4.40 239 Daily discharge, in second-feet, of Willow Creek near lona, Idaho, for the year end ing Sept. 80, 1921 Da/ Oct. Nov. Dec. Apr. May June July Aug. Sept. 1 ___ . ___ .. __ ...... 69 97 KA 99 9QQ 180 115 100 2...... -.:... AQ 22 60 21 1115 197 133 121 93 3 - 63 18 69 22 364 186 155 119 94 4 _ ...... 63 18 68 57 461 176 151 116 99 5 . ._ 60 16 67 64 d.1 *\ 149 116 83 «... _ .... _ ...... 63 66 67 409 176 148 114 65 7 ...... 63 27 66 KA 113 65 8. _ ... _ 63 69 22 48 377 162 141 111 83 9, ...... 66 7K NOTE. No record obtained Dec. 18 to Mar. 31, except measurement on Mar. 18. Stage-discharge rela tion affected by ice Dec. 3-6,13, and 14; discharge interpolated. No gage-height record Apr. 1; discharge estimated. 14234 25 6 68 SUEFACE WATER SUPPLY, 1921, PAET XII B Monthly discharge 'of Willow Creek near lona, Idaho,fqr ,the year ending Sept. . ' .' ' ' SO, 1921 Discharge in second-feet . Run-off in Month acre-feet Maximum Minimum Mean October ______.. __ . __ ___ 75 '1627 " 57. 5 3,540 75 ' ' 49/6 2,950 69 55,3; 1,860 April...... 219 108 6,430 TVJoTT 461 172 291 » 17,900 June ______- __ . ______. . __ . __ . __ 197 141 163 9,700 July ...... 155 116 127 7,810 August ______. ___ .,.. _ _ ...... __ , 121 101 109 6,780 September. _ ... ______.. . ______...... 100 52 68.4 4,070 NOTE. See footnote to table of daily discharge. GRAYS LAKE OUTLET NEAR HERMAN, IDAHO LOCATION. In sec. 15, T. 3 S., R. 42 E., 3 miles below bridge at outlet of Lake and 3*4: miles west of Herman, Bonneville County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 5, 1916, to September 30, 1921. GAGE. Stevens continuous recorder on right bank installed April 20, 1918; in spected by Mrs. C. H. Johnson. Prior to April 20, 1918, vertical staff on right bank at practically same location and datum. DISCHARGE MEASUREMENTS. Made from cable near gage or by wading. CHANNEL AND CONTROL. Channel composed of gravel and small cobbles; left bank subject to overflow at gage height of approximately 3.5 feet. Control is rock ledge about 25 feet below gage; practically permanent. Point of zero flow determined August 2, 1921, as at gage height 0.43 foot ±0.05 foot. EXTREMES OP DISCHARGE. Maximum stage during year, from well-defined high-water marks, 5.0 feet on about April 30 (discharge, about 784 second- feet); minimum stage, 0.8 foot September 27 (discharge, 2.3 second-feet). Channel reported practically dry prior to April 16. 1916-1921: Maximum stage recorded, 5.9 feet at 9 a. m. May 15, 1917 (discharge, 1,350 second-feet); minimum stage, 0.63 foot August 30 and 31, 1920 (discharge, 0.5 second-foot). ICE. Records discontinued during winter. Ice practically stops flow from lake at times, but springs probably keep channel near gage free from ice. DIVERSIONS. No diversions between lake and station. Diversions for irriga tion are made above lake, but amount of water diverted is not known. REGULATION. No artificial regulation above station. ACCURACY. Stage-discharge relation practically permanent. Rating curve is well defined. Operation of recorder not entirely satisfactory on account of poor attention by observer. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph, and estimating for certain periods when recorder was not operating. Records poor May 1-14; fair June 2-19 and for September; and good for remainder of period of record. TRIBUTARY BASINS 6$ Discharge measurements of Grays Lake outlet near, Herman, Idaho, during the year, ending Sept. 30', 1921 : -.'/.;-, Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. A. G. Filler. __. . .. "551 A. G.-Eifidter _;.__,___.. 2.10 91.9 15 3.70 331 Aug. 2 1.08 11.6 June 1 2.98 221 Sept. 27 .80 2.3 21 A. G.Fiedler ______2.24 115 "Measured from highway bridge 2V£ miles above gage. ' Observed reported gige height 4.5 feet at 1p.m. Measurement made from 1.30 to 2.30 p. m. , , Daily discharge, in second-feet, of Grays Lake outlet near Herman, Idaho, for the year ending Sept. 30, >1921 Day Apr. May June July Aug. Sept. Ray Apr. May Juna July Aqg. Sept.. l . 220 72 12. 2.8 16 2.3 334 115 35 5.4 2 .... 1 700 215 68 12 2.8 17 . 316 113 34 5.0 3 211 fiQ 2.8 307 110 33 4.5 4... 207 66 11 2.8 19 316 108 32 4.4 5 __ 574 210 64 10 20 316 105 29 4.3 6 634 212 61 10 21 298 110 29 4.1 2.6 1 .... 694 215 . 58 9.5 22 _2._ 290. 109 27 4.0 8 583 202 53 9.0 23 282 105 26 3.9 9, 472 188 50 8.6 24 .... 282 AC 23 3.6 10 450 174 47 8.2 2.6 25 .... 273 94 22 3.2 11 .... 429 160 43 7.8 26 .... 256 SI 20 2.8 12.... 408 150 42 7.4 27 .. 248 86 19 2.8 2.3 13 .... 139 40 . 6.8 90 83 17 2.8 14 .... 365 128 39 6.2 29.._. 231 79 16 2.8 I 2.3 15 . 344 118 37 5.8 30 217 76 13 2.8 31 784 2.8 NOTE. Braced figures show mean daily discharge for periods indicated. Channel reported practically dry prior to Apr. 16. Discharge estimated Apr. 16, 30, June 7, because gage readings were in error. No gage reading and discharge interpolated May 6,8, 10-14, June 2, 3, 5, 6, 8-10, 12-14, 16-19, July 4-6, Aug. 3, 5-9, 11, 13, 15-17, 19-22, 24, 25, and Aug. 27 to Sept. 3. Monthly discharge of Grays Lake outlet near Herman, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Run-off in t Month acre-feet Maximum Minimum Mean May _ -,. ______. .. ______213 405 24,900 220 76 141 8,390 3\Hy...... 72 12 38.6 2,370 , 12 2.8 6.31 38S 2.8 2.3 2.59 154 The period ___ . ... _ ___ . ____ ...... 36,200 NOTE. Estimated discharge Apr. 16-30, 13,100 acre-feet based on approximate stages as interpreted Irom information furnished by observer. IDAHO (GOVERNMENT) CANAL NEAR SHELLEY, IDAHO i LOCATION. In sec. 31, T. 1 N., R. 37 E., 600 feet below canal head gates, 1| miles southwest of Shelley, Bingham County, and 10 miles above point where Sand Creek crosses canal. RECOKDS AVAILABLE. June 20,1912, to September 30, 1921. No water diverted during 1913 because of break in canal. i Record for this diversion is also included in " Total diversions from Snake River between Shelley and Porterville gaging stations." 70 SURFACE WATER SUPPLY, 1921, PART XII B GAGE. Inclined staff on right bank set in the concrete of rating section; read by Antone Christensen. DISCHARGE MEASUREMENTS. Made from suspension footbridge at the gage or by wading. CHANNEL AND CONTROL. Trapezoidal concrete rating section. Growth of weeds and brush causes changes in stage-discharge relation, but bottom of rating section evidently furnished a permanent point of zero flow "at gage height about 0.0 foot. EXTREMES OF DISCHARGE. Maximum stage recorded during period June 1 to September 30, 4.48 feet at 10.50 a. m. August 3 (discharge, 443 second- feet); minimum flow, zero, June 1-14. 1912-1921: Maximum stage recorded, 4.83 feet August 12, 1920 (discharge, 486 second-feet); minimum flow zero during practically all periods of no record, when head gates were closed. ICE. Canal not operated during winter. DIVERSIONS. None. REGULATION. Flow controlled at the head gates 600 feet above. ACCURACY. Stage-discharge relation not permanent. Standard rating curve well defined; two parallel curves used. Gage read to hundredths daily. Daily discharges ascertained by applying daily gage height to rating table except as noted in footnote to daily-discharge table. Records good. Idaho (Government) canal diverts water from left bank of Snake River in sec. 31, T. 1 N., R. 37 E. and discharges into Blackfoot River in sec. 24, T. 2 S., R. 36 E. The canal also receives water from Sand Creek about 10 miles below station. Discharge measurements of Idaho (Government) canal near Shelley, Idaho, during the period June 1 to Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet ' Sec.-ft. Feet Sec.-ft. G. O. Baldwin.. July 22 T. R. Newflll 4.36 424 July 6 3.60. 346 3.75 357 34 .....do...... 4.18 12 .do.. .60 24 Daily discharge, in second-feet, of Idaho (Government) canal near Shelley, Idaho, for the period June 1 to Sept. 30, 1921 Day June July Aug. Sept. Day June July Aug. Sept. 1 . ... .- 343 1 9 16 . __ ..... __ - 297 399 20 9 2 __ 337 432 11 17 .... 292 383 20 8 3 .. ... qoi 443 18 287 420 20 7 4 OQC 19 276 393 20 7 5 - 11 20 299 422 20 6 6 ___ 343 24 11 21... _ ...... 287 426 16 5 7 ...... 014 24 22 298 429 16 5 8 11 23 320 427 16 4 9 391 24 12 24 _ 392 433 16 3 10 - 396 24 13 25 393 433 16 2 11. ___ ...... 4.AO 24 12 26. . 385 440 12 2 12.. _ .- . .. 24 12 27 . 379 439 12 1 13 . 20 11 28 - 338 421 12 1 14.. _ .... . 410 20 29 327 431 12 1 15 ... _ .... __ . 297 407 9 30 324 423 12 1 31 _ 428 12 NOTE. No record obtained Oct 1 to May 31. Canal reported dry June 1-14. No gage-height record Sept. 1, 2, 4-7, 9, 11-26, and 28-30; discharge due to gate leakage only was interpolated or estimated. TRIBUTARY BASINS 71 Monthly discharge of Idaho (Government) canal neoa? Shelley, Idaho, for the period June 1 to Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 393 0 173 io,3oa July...... , 440 314 397 24,4flO» August ______443 12 82.9 5,ie* 13 1 7.67 45& 40,30$ NOTE. See footnote to table of daily discharge. BLACKFOOT RIVER ABOVE RESERVOIR, NEAR HENRY, IDAHO LOCATION. About sec. 9, T. 7 S., R. 42 E., at Swanson (formerly Cully) ranch 1J"<2 miles above flow line of Blackfoot-Marsh reservoir, 7 miles south of H-enry, Caribou County, and 13 miles north of Soda Springs. DRAINAGE AREA. 360 square miles (measured on Land Office maps). RECORDS AVAILABLE. March 25, 1914, to September 30, 1921. GAGE. Vertical staff set in concrete, installed June 23, 1921, on right bank to rear of Swanson's house and 500 feet below highway bridge. Gage installed at same site, but reads 0.12 foot higher than vertical staff previously used. All readings reduced to former datum. Original gage used March 25 to September 30, 1914, was a vertical staff attached to streamward side of right bridge pier three-fourths mile above. Gage read by Mrs. A. C. Swansom DISCHARGE MEASUREMENTS. Made from cable at gage or by wading. CHANNEL AND CONTROL. Bed is rough; composed of loose rocks and boulders with some gravel. Control is of loose rock, fairly permanent. One channel below gage height of 3.6 feet; above this stage stream flows in channel to right of river, and above approximate gage height of 4.75 feet enters a third channel, also to right of main stream. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 5.4 feet May 9 (discharge, 1,360 second-feet); minimum stage, 1.40 feet during ice- affected period when discharge was not determined. 1914-1921: Maximum stago, 6.85 feet May 16, 1917, estimated from high- water mark above gage (discharge, 2,060 second-feet); minimum stage, 0.98 foot August 17, 1919 (discharge, 23 second-feet). ICE. Stage-discharge relation affected by ice; observations discontinued dur ing winter. DIVERSIONS. A few small ranch diversions are made above gage. REGULATION. None. Entire flow passing .gage is stored in Blackfoot-Marsh reservoir 1J^ miles below. ACCURACY. Stage-discharge relatidn not permanent. Used curves parallel to two'well-defined rating curves. Shifting-control methods applied July 18 28. Gage read to quarter-tenths prior to June 23 and to hundredths one 3 daily thereafter. Daily discharge ascertained by applying daily gag'O height to rating tables. Records good. * 72 SURFACE WATER SUPPLY, 1921, PART XII B Discharge measurements of Blackfoot River above reservoir, near Henry, Idaho, during the year ending Sept. 80, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-//. Feet Sec.-ft. Mar. 18 1.87 128 A. O. Fiedler...... 2.42 234 May 1 3.80 661 July 30 1.85 118 14 __ .do ___ . ___ .... 3.60 670 2.04 146 June 3 3.96 714 Sept. 26 ..do - 1.76 103 18 A.Q.Piedler. ___ .... 2.85 319 30 - .do . 1.72 101 Daily discharge, in second-feet, of Blackfoot River above reservoir, near Henry, Idaho, for the year ending Sept. 80, 1921 Day Oct. Nov. Mar. Apr. May June July Aug. Sept. 1 ...... _ 75 105 ' 133 659 588 199 116 100 2...... 98 850 659 199 133 116 3 ...... 75 98 189 1,200 734 199 150 116 4 ... . _._ .... ._ 68 94 OQ1 1,250 A en 199 144 140 6 . .- ...... 68 Qd 266 1,150 623 199 130 130 6 ...... 68 os 220 1,100 623 189 137 120 7 ...... 82 94 1,060 588 180 123 113 8 ...... 82 98 199 1,150 588 170 120 110 9 ...... ,- 80 90 189 1,360 520 170 116 110 10 . 94 90 1QA i fifif) 487 161 133 107 11 ...... _ ... . . 110 90 209 811 161 123 104 12 ...... 105 113 254 422 161 116 104 13 .- -...... 98 105 108 361 734 391 161 116 104 14 ...... 98 105 107 391 696 391 161 120 100 15 ...... 98 105 113 391 CQfi 376 161 120 100 16 ...... __ ...... 105 82 116 346 659 361 161 120 100 17 ...... 113 94 116 332 696 346 147 116 98 18 ...... --_... 113 105 128 d*>9 734 346 170 116 98 19 .-.- _ ..- 113 147 454 811 346 170 116 107 20 ._^;...... 113 130 180 520 890 332 170 116 113 21 ...... 113 121 150 487 772 318 147 107 110 22 ., ...... 113 - 121 . 142 487 696 291 152 110 110 23 ...... 105 98 116 554 659 278 152 113 107 24 ...... 82 98 125 ftCQ 659 266 140 116 -104 25 .....-...... 82 QO 125 696 254 135 120 100 26 _... _ '...... Oft 00 113 454 696 242 135 120 100 27 ...... 98 no 100 391 669 231 . 128 , HO 98 28 . . .--. .. . . 98 Oft 107 391 623 220 128 104 98 29 .-. __...... _. 98 116 AKA 623 209 123 107 98 30 ...... 105 \ 96 116 620 623 199 120 104 98 31 -.-.-...... 105 116 623 120 107 NOTE. Discharge estimated because of ice Nov. 29 and 30; shifting-control methods used July 18-28. Monthly discharge of Blackfoot River above reservoir, near Henry, Idaho, for the year ending Sept. 80, Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 113 68 94.8 5,830 November _ ...... ______. ___ .... 130 82 99.4 5,910 March 12-31 _ . __ . __ ... _ ...... ___ ...... 180 100 123 4,880 659 133 353 21,000 1,360 623 828 50,900 734 199 411 24.500 July...... _ 199 120 160 9,840 150 104 119 7,320 140 98 107 6,370 t3 BLACKFOOT-MARSH RESERVOIR NEAR HENRY, IDAHO LOCATION. In sec. 12, T. 5 S., R. 40 E.,,12 miles northwest of Henry, Caribou County, and 45 miles southeast of Blackfopt. RECORDS AVAILABLE. January 1, 1912, to September 30, 1921. GAGE. Vertical staff near spillway at right end of dam; read by B. B. Reynolds. Prior to April 23, 1918, gage headings were made on gage 51.6 feet higher in elevation. Gage readings subsequent to April 23, 1918, are' corrected to agree with former datum. To reduce gage heights to elevation above sea level add 6,048.40 feet. Zero of present gage, 6,100 feet above sea level. EXTREMES OF STAGE. Maximum stage recorded during year, 64.38 feet June 12; minimum stage, 52.68 feet October 1. 1912-1921: Maximum stage recorded, 68.60 feet June 27-30, 1912; min imum stage, 40.76 feet September 28 and 29, 1919. ; COOPERATION. Gage-height record furnished by United States Indian Service. Stored water from this reservoir is used for irrigation of lands near Pocatello and on Fort Hall Indian reservation, the area covered by the project being approximately 50,000 acres. The reservoir is formed by a loose rock and hy draulic-fill dam with a concrete core wall, paved on the reservoir side to prevent erosion. The dam is 120 feet long at base, 250 feet long at crest, and about 40 feet high. The reservoir is 17 miles long and 5^4 miles wide at the widest point, and covers about 15,000 acres of land. The spillway, excavated in rock at north end of dam, is 50 feet wide "and the crest elevation is 6,118 feet. The capacity of the reservoir at elevation of crest of spillway is 303,000 a«re-feet. Elevation of lowest point to which water may be drawn is 6,090 feet. The distribution system comprises 56 miles of main canal, 108 miles of laterals, and 3J^ miles of drainage ditch. Daily gage height, in feet, of Blackfoot-Marsh reservoir near Henry, Idaho,, for the year ending Sept. SO, 1921 Day Oct. Nov. Dee. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1...... 52.68 54.14 54.62 '57.60 63.62 63.56 61.40 58.86 2...... 52.70 54.16 60.71 63.70 63.50 61.34 3 52.70 54.16 60.88 63.78 63.42 61.25 RO 70 4.. _ ...... 52. 72 54.17 55.70 56.10 57.95 61.06 63.86 63.34 61.14 KO 70 5 ...... 52.74 54.17 61.27 63:92 63.24 61.02 58.66 8 52. 76 54.18 61.48 64.00 63.14 60.88 58.59 7 ...... 52.78 54.20 56.20 61.62 64.06 63.08 60.76 58.53 8...... 54.22 61.74 64.11 63.04 60.68 58.42 9...... 52.82 64.24 55.30 61.91 64.16 62.98 60.58 58.34 10.-- .. 52.84 54.24 58.30 62.06 64.23 62.92 60.45 58.29 11 . 52.86 54.25 54.76 58.40 62.21 64.30 62.86 60.34 58.26 12 52.88 54.26 55. 80 58.50 62.35 64.36 62.82 60.26 58.24 13...... 52.90 54.27 58.60 62.42 64.35 62.76 60. 19 58.20 14 ... _ 54.28 58.68 62.48 64.32 62.68 60.10 58.18 15.... _ ...... 54.30 56.40 58.76 62.57 64.30 62.60 60.02 58.18 16.--.-..-...... 53.01 54.32 58.85 62.59 64.26 62.53 59.98 58.14 17 __ ...... 53-07 54.34 54.80 62.54 64.24 62.45 59.93 .58.10 18..... _ ...... 53- 14 54.36 56.60 59.02 62.56 64.22 62.38 59.87 58.07 19 54.38 59.10 62.56 64.18 62.32 59.78 58.03 20 ...... 53.26 54.40 59.20 62.60 64.14 62.22 59.68 57.99 - 21...... 53.34 54.40 59.27 62.59 64.10 62.14 59.52 57.97 22 ...... 53. 40 54.42 59.34 62.56 64.08 62.06 59.44 57.92 23 ...... 53.47 54;.44 59.42 62.55 64.06 62.02 59.40 57.87 24. ..-.. 53.55 54.46 56.70 59.55 62.82 64.06 61.96 59.33 57.84 25...... 54. 48 555H 59.60 62.94 64.02 61.90 59.26 57.80 26...... 53.72 54.50 63.02 63.94 61.82 59.16 57.74 27...... 53.80 54.52 63.14 63.86 61.78 59.12 57.72 28 ...... 53.88 54.54 63.24 63.75 61.73 59.07 57.69 29...... 53.98 54.57 63.32 63.66 61.66 59.02 57.66 30...... 54.06 54.62 ...... 63.41 63.62 61.58 58.96 57.63 31 ...... 54.11 63.52 61.48 58.91 74 SURFACE WATER SUPPLY, 1921,; PART XII B BLACKFOOT RIVEE, NEAR HENKY, IDAHO LOCATION. In sec. 11, T. 5 S., R. 40 E., 200 feet below wagon bridge at Rocky- ford crossing, 1 mile below Blackfoot-Marsh dam of United States Indian Service, and 12 miles northwest of Henry, Caribou County. DRAINAGE AREA. Not measured, .,,. RECORDS AVAILABLE. August 15,1908, to September,30,1.921, GAGE. Friez water-stage recorder installed September, 1,8,1912, on left bank. Prior to September 18,1912, gage was a vertical staff a few feet downstream from present gage. Datum of original gage lowered 0.10 foot between July 15, 1908, and May 25, 1912; datum of present gage same as original gage on May 25, 1912, until May 15, 1920, when it was corrected to original datum. B. B. Reynolds makes daily staff gage readings and inspects Friez recorder. DISCHARGE MEASUREMENTS. Made from a cable 600 feet above gage or by wading. CHANNEL AND CONTROL. Bed composed of lava rock, boulders, and gravel; fairly permanent. One channel at all stages. Control at times affected by growth of moss. EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage recorder, 3.45 feet at 3 p. m. May 15 (discharge, 1*230 second-feet); mini mum stage, 0.80 foot November 2-15 (discharge, 9 second-feet). A lower, stage and discharge may have occurred during period of no record. 1908-1921: Maximum stage recorded, 4.45 >feet May 14, 1909 (discharge, 1,640 second-feet); minimum stage, 0.50 foot May: ll, 12, 1917 (discharge, about 1 second-foot). ICE. Stage-discharge relation not seriously affected by ice. DIVERSIONS. Few small diversions for irrigation above reservoir. REGULATION. Flow entirely regulated by storage in reservoir. ACCURACY. Stage-discharge relation affected by growth of moss. Used rating curve which is well defined between 5 and 970 second-feet, and several curves parallel thereto. Records from water-stage recorder available only subse quent to April 25; staff gage readings used during remainder of year. Staff gage read to hundredths usually once daily, except during winter months when only occasional readings were obtained. Daily discharge ascertained by applying mean daily gage height to rating table except for periods of shifting control and estimation as noted in footnote to daily^discharge table. For period when water-stage recorder was in operation daily gage heights obtained by inspection of recorder graph. Records good. COOPERATION. Gage-height record furnished by United States Indian Service. Discharge measurements of Blackfoot River near Henry, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. May '3 A. G. Fiedler...... 0.98 32.7 Sept. 28 2.13 335 : 16 .....do--...... 3.42 1,200 28 2.12 355 .95 30.0 28 .....do... , ...... 2.12 345 20 A. Q. Fiedler _____ . 2.42 552 29 do . 2.38 471 Aug. 1 CKC 29 . -do...... - - 2.38 466 3 2.70 615 29 ..... do...... -. 2.38 471 TEIBUTAEY BASICS , 7=0 Daily discharge, in second-fed i of-Blackfoot River near Henry, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June" July Aug. Sept. I...... 12 11 11 600 27 s 577 647 526 2...... 12 9 [ " 16 316 29 NOTE. Braced figures show mean estimated discharge Mr the periods indicated. Shifting-control nwthod used Nov. 16 to Dec. 1,11,17, Jan. 9,25, Feb. 4, June 21 to July 31, Aug. 4 to Sept. 27. Monthly discharge of Blackfoot River near Henry, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off Month in acre-feet Maximum Minimum Mean 14 12 12.8 787 11 .9 9.90 589 11.5 707 12.2 750 14.9 828 16.0 984 600 116 6,310 1,160 25 181 17,3,0 901 27 380 22.6 0 678 554 614 . ' S7.8CO 1,040 526 753 46, SCO September .;....'.... ______. 526 303 416 24,800 1,190 9 220 160,000 76 SURFACE WATER SUPPLY, 1921,' PART XII B BLACKFOOT RIVER NEAR SHELLEY, IDAHO LOCATION. In sec. 7, T. 2 S., R. 38 E., Bingham County, 1J^ miles above mouth of canyon, 3 miles "above N. A. Just's ranch, 10 miles southeast of Shelley, Bingham County, and 18 miles northeast of Blackfoot. Below all impor tant tributaries. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. June 26,1909, to September 30, 1921. From March 23, 1903, to December 31, 1909, records were obtained near Presto, about 5 miles below site of present station. No tributaries enter between the two sites, but during the irrigation season several canals divert probably 50 second-feet. GAGE. Friez water-stage recorder on right bank. Observer, Rufus E. Reid. DISCHARGE MEASUREMENTS. Made by wading or from cable at gage. CHANNEL AND CONTROL. Bed rocky and rough. One channel at all stages. Control shifts occasionally. EXTREMES OF DISCHARGE. Maximum stage during year from water-stage recorder, 6.07 feet at 9 p. m. May 18 (discharge, 1,670 second-feet); mini mum stage, 3.03 feet at 10 p. m. November 28 (discharge, approximately 17 second-feet). 1909-1921: Maximum stage recorded that of May 18, 1921; minimum stage, 2.83 feet at midnight January 23, 1919 when ice jam above station caused temporary drop in stage (discharge, about 15 second-feet). ICE. Stage-discharge relation affected by ice. DIVERSIONS. No noteworthy diversions are made from river or tributaries above station. REGULATION. Flow regulated largely by storage in the Blackfoot-Marsh reser voir of United States Indian Service, about 40 miles upstream. ACCURACY. Stage-discharge relation permanent except as affected by ice. Rat ing curve well denned for open-channel conditions. Operation of water- stage recorder fairly satisfactory except during winter period, when occasional staff readings were secured. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspecting recorder graph, except as noted in footnote to daily-discharge table. Records good. Discharge measurements of Blackfoot River near Shelley, Idaho, during the year end ing Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet, Sec.-ft. Feet Sec.-ft. Nov. 6 3.39 79.8 July 23 T. R. Newell. __ .. 4.96 786 Mar. 24 .....do ~- ... . 3.53 121 28 C. F.Elfordo ..... 4.94 771 Apr. 28 T. R. Newell .... 4.68 572 .....do- ., ... 5.46 1,210 May 21 .....do 5.03 sn"> is T. R. Newell.. .._> 5.08 856 3.78 207 27 C.F. Elford" ...... 4.80 706 Employee of State'commissioner of reclamation. 7? discharge, in second^feet, of Blackfoot Riper hear Shelley, Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Jim. Feb.. Mar. Apr. May June July Aug. Sept, 1 . . 182 71 59 61 33 88 137 955 304 6M 772 558 2...... 105 66 57 47 32 83 166 1,010 308 694 772 564 a."...... 78 64 57 41 30 91 211 467 275 701 772 569 4 ___ .. ___ -. 73 64 43 36 28 102 252 408 267 694 772 569 5 71 64 53 36 27 113 226 423 275 688 880 1 564 6...... '..... 71 71 65 33 47 102 159 423 271 682 1,180 558 7... . 71 73 55 33 , 6a 96 156 462 248 676 1,180 558 8 .... . 71 69 53 64 ' 68 86 166 536 233 676 1,150 552 9 71 64 43 65 68 78 162 462 222 682 1,050 541 10 86 68 45 65 68 83 172 413 204 688 1,050 472 11 78 68 45 65 68 86 182 395 287 701 947 457 12 78 68 36 65 68 91 192 385 376 759 947 467 13 76 73 43 65 68 102 203 376 376 806 940 467 14 71 71 42 65 68 102 213 3C3 566 792 933 467 15. . . 73 72 42 66 68 105 223 9S5 1,040 746 926 467 16- ...... 73 73 42 55 68 111 233 1,610 901 739 882 408 17 83 74 42 57 68 117 229 1,620 786 746 861 408 18 ...... 94 74 .41 88' as 122 . 233 1,650 . : 779' 752 840 408 19- 94 75 43 59 68 128 260 1,570 786 786 786 408 20...... 88 76 39 51 68 119 260 1,030 714 779 779 408 21. . 83 66 41 61 78 122 256 847 676 779 759 408 22...... 83 59 43 50 76 119 260 819 670 779 688 408 23...... 73 57 43 50 83 128 333 509 676 786 682 408 24...... 66 59 49 50 78 122 346 423 733 786 694 404 26 69 59 39 38 78 970 37C 726 779 688 399 26. . .. 73 59 49 36 73 119 462 341 726 705 688 395 27- - 73 66 47 34 78 116 610 312 720 765 688 395 28...... 71 47 45 36 78 113 800 308 714 772 639 390 29...... 73 83 43 34 119 960 295 701 765 633 413 30- 78 86 45 69 116 962 279 694 772 627 372 31 .- 78 57 39 122 283 779 581 NOTE. NO gage-height record Nov. 15-19, Mar. 16-18, Apr. 10-15, and Aug. 26; discharge interpolated. Also Apr. 28, 29, and Aug. 2-5; discharge estimated by comparison with record of station upstream. Stage-discharge relation aflected by ice Nov. 1(W2, Dec. 6, 7, 14-17, 27, Jan. 9-14, 22-24, and Feb. 7-20; discharge estimated, as shown above, on basis of temperature and gage-height records, observer's notes, and comparison with flow at unaffected station upstream. Monthly discharge of Blackfoot River near Shelley, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 182 66 . 80.9 4,970 86 47 68.0 4,050 65 36 46.6 2,870 88 33 52.1 3,200 '83 27 63.2 3,510 131 78 107 6,580 962 137 310 18,400 1,650 279 656 40,300 1,040 204 542 32,300 July .,. - __ 806 676 742 45,600 1,180 581 832 51,200 569 372 462 27,500 1,650 27 332 240,000 BLACKFOOT RIVER NEAR BLACKFOOT, IDAHO LOCATION. In sec. 27, T. 3 S., R. 34 E., 2 miles above junction of Blackfoot River with Snake River and 8 miles southwest of Blackfoot, Bingham County. JDBAINAGE ABEA. Not measured. RECOEDS AVAILABLE. July 27, 1913, to September 30,1921. SURFACE WATEB SUPPLY, 1921, PAST XII B GAGE. Inclined staff on right bank half a mile south of the Kofoed ranch house. Observer, O. L. Kofoed. DISCHARGE MEASUREMENTS. Made from cable 100 yards below gage or by wading. CHANNEL AND CONTROL. Bed composed of gravel. Control presumably of the same material, fairly permanent. One channel at all stages. Banks cov ered with heavy growth of brush and willows which may affect stage- discharge relation at high stages. EXTREMES OP DISCHARGE. Maximum stage recorded during period May 7 to September 30, 9.60 feet at 12.30 p. m. May 21 (discharge, 868 second-feet)*; minimum flow, zero June 12-14. 1913-1921: Maximum stage recorded that of May 21, 1921; minimum flow recorded as zero on numerous days in 1919-1921. JCE. No records obtained during winter. DIVERSIONS. Principal diversions above gage are the Fort Hall canals near Blackfoot, several smaller diversions also made near Blackfoot. REGULATION. Flow regulated by storage in the Blackfoot-Marsh reservoir of the United States Indian Service, and by manipulation of canal head gates above station. ACCURACY. Stage-discharge relation permanent during peiiod. Standard rat ing curve well defined between 95 and 710 second-feet. Gage read to hun- dredths or quarter-tenths daily; diurnal changes in stage caused by regula tion are often source of error. Daily discharge ascertained by applying gage height to rating table or as noted in footnote to daily-discharge table; Records fair. Discharge measurements of Blackfoot River near Blackfoot, Idaho, during the period May 7 to Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. T. R. Newell .... 8.79 706 5.27 OR a do .. 5.65 ]52 16 T. R. Newell...... 6.74 340 18 5.82 184 5.79 182 July 5 T. R. Newell. Daily discharge, in second-feet, of Blackfoot River near Blackfoot, Idaho, for the period May 7 to Sept. SO, 1921 Day May June July Aug. Sept. Day May June July Aug. Sept. 1...... 244 319 68 195 16...... 728 186 25 358 137 2 ...... 276 247 101 17...... 758 302 23 336 43 3 . . __ .. 322 223 148 58 18 . 848 184 6 415 104 4.. __ ...... 336 244 169 193 19...... 838 190 9 466 139 5. ___ ...... 176 295 207 276 20 864 1 KA 6 __ .. 129 322 286 290 21... _ ...... 868 219 12 382 152 7 ...... 706 154 321 382 290 22...... 808 88 28 357 193 8. _ ...... 712 114 266 308 292 23...... 732 38 30 244 205 720 69 230 319 110 689 9 39 36 176 10 718 39 139 280 110 25 __ ...... 502 271 50 77 148 11. 724 88 280 154 26...... '.... 520 366 82 173 129 12.. __ ... . 708 0 4 201 190 27- ...... 480 366 117 188 129 13 708 0 28 223 203 28- __ ...... 390 382 95 308 129 14...... 718 0 37 29 358 314 47 303 145 15 666 39 54 Oft 354 325 42 288 145 31. __ 336 40 74 NOTE. No record obtained Oct. 1 to May 6. Rivfcr reported dry June 12-14. TRIBUTAEY BASINS Monthly discharge of Blackfoot River near Blackfoot, Idaho, for the period May 7 to Sept. SO, 1921 Discharge in second-feet Run-oft in Month aere-feet Maximum Minimum Mean May 7-31... . I- ..,...... _ 868 336 658 32,600 June ______382 0 175 10,400 July....-.....-....--...... -...... -.-.....--...... -. 322 4 112 6,890 August... _ . ______466 36 261 16,000 292 43 157 9,340 75,200 NOTE. See footnote to table of daily discharge. LITTLE BLACKFOOT RIVER AT HENRY, IDAHO LOCATION. In sec. 10, T. 6 S., R. 42 E., at bridge on Kirk ranch, at Henry, Caribou County, a short distance above flow line of Blackfoot-Marsh reser voir, 20 miles north of Soda Springs. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. March 24, 1914, to September 30, 1921. GAGE. Vertical staff attached to upstream side of bridge on left bank; installed August 19, 1920; read by Mrs. W. J. Chester. Prior to August 19, 1920, a vertical staff fastened to log across stream just below barn and 40 feet above present gage; at different datum. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. Bed composed of rock overlain with sand and gravel; control is rock crest of 8-foot falls, 20 feet below gage. Stage-discharge rela tion is at times seriously affected by growth of aquatic vegetation. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 2.20 feet at 5 p. m. April 29 (discharge, 100 second-feet); minimum stage, 0.88 foot-at 9.30 a.m. February 6 during shifting-control period (discharge, about 13 second-feet). 1914-1921: Maximum stage recorded, 3.5 feet at 8 p. m. April 19, 1914 (discharge determined from extension of rating curve, about 292 second-feet); minimum discharge 6.9 second-feet Jantiary 8, 1919. ICE. Stage-discharge relation not affected by ice on account of warm springs. DIVERSIONS. One small diversion 300 feet above station and one between station and reservoir. REGULATION. No artificial regulation. ACCURACY.- Stage-discharge relation affected by growth of aquatic plants. Rat ing curve fairly well defined used October 1 to December 8; curve,which is well defined between 10 and 70 second-feet and fairly well defined above 7 0 second-feet and several curves parallel thereto used March 1 to September 30. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table, except for periods of shifting control noted in footnote to daily-discharge table. Records fair prior to March 1; thereafter good. 80 SURFACE WATER SUPPLY, 1921, PART XII B Discharge measurements of Little Blaekfoot River at Henry, Idahoj during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet , Sec.-ft. Feet Sec.-ft. Mar. 17 0.88 June 26 A. G. Fiedler.... 1.12 21.2 A. G. Fiedler ...... 1.77 64.8 July 31 1.03 17.8 14 .....do...... 1.26 01 Q Aug. 2 1.04 19.3 .....do.. -. .98 17.0 ' 18 A. G. Fiedler __ ...... 1.18 22.3 30 .....do. . -V. .98 ' 17.2 Daily discharge, in second-feet, of Little Blaekfoot River at Henry, Idaho, for the year < ' ending Sept. 3D, 1921 Day Oct. NQV. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 16 ' 1. ___ __, .. 19 20 23 18 14 32 43 42 19 18 17 2...... 16 20 93 16 38 63 35 19 19 18 3... _ . _ . 16 18 19 22 15 54 . 50- 32 20 19 19 4...... 16 19 19 22 15 14 59 47 35 20 19 18 5 ... _. 16 19 20 oq 15 14 37 41 39 20 19 18 6...... 16 19 20 23 14 14 39 44 32 20 18 18 7...... 16 19 20 oq 14 40 46 32 20 18 18 8. _ 16 19 20 21 14 38 R(\ 30 20 18 17 9 -. ..- 17 19 21 ' 23 14 14 38 46 27 20 18 17 10...... 18 19 21 22 14 14 41 46 27 21 18 17 " 20 11. __ . __ . 17 19 20 22 14 16 46 43' 27 18 17 12- ...... 17 19 20 22 15 15 64 33 26 19 18 17 13...... 18 18 20 22 16 15 66 35 24 19 18 17 14...... 18 20 66 32 23 19 18 17 15 ...... 18 20 20 20 18 14 64 32 22 19 18 17 16..., _ . . 18 19 20 20 18 14 71 33 21 20 18 18 17...... 19 20 20 20 17 14 46 33 23 20 18 17 18...... 20 21 20 20 17 15 55 36 22 20 19 17 19...... 19 25 18 20 16 15 59 45 22 20 18 17 20...... 20 20 18 20 18 16 52 40 22 20 17 17 21-..-...... 19 20 18 21 19 15 59 33 22 20 17 IT 22.. . .. 18 20 21 15 15 79 28 22 20 17 17 23...,. ... 18 21 19 20 15 15 9160' 35 21 2019' 17 17 24...... 18 20 19 19 15 16 47 21 17 17 25...... 18 20 20 15 51 45 21 19 17 17 26 ...... 18 20 20 20 15 15 40 38 21 19 17 17 27..... 18 21 20 20 14 16 52 37 22 19 18 18 28..... __ 18 21 23 19 15 15 56 40 21 19 17 18 29...... 19 20 25 20 15 91 36 19 19 17 17 30...... 19 20 23 21 15 50 32 19 19 17 17 31.... ____ . 19 OS IS 19 29 18 17 NOTE. Shifting-control method used Dec. 9 to Feb. 28, June 4-24. No gage-height record Oct. 16, Nov. 2, 5-11, 13, Mar. 13, May 6, 30, July 4, 5, 22-24; discharge interpolated. Monthly discharge of Little Blaekfoot River at Henry, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Month Run -off Maximum Minimum j Mean in acre-feet October.. ______. ______... 20 16 17.7 1,090 25 18 19.7 1,170 December .. ___ . ______25 18 20.1 1,240 23 18 21.0 1,290 19 14 15.8 878 19 14 14.8 910 April ______. ______91 32 54.1 3,220 May ______63 28 40.3 2,480 June ______42 19 25.7 1,530 July...... 21 18 19.5 1,200 August ______.. 19 17 17.8 1,090 September ______...... 19 r !7 17.3 1,030 91 14 23.7 17,100 TBIBUTARY, BASINS 831 MEADOW CREEK NEAR £ENRY, IDAHO .., LOCATION. In sec. 3, T. 6 S., R. 42 E., half a mile above flow line of Blackfoot- Marsh reservoir, three-quarters of a mile below Goose Lake or Pelican Slough, and lj^ miles northeast of Henry; Caribou County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 20, 1914, to September 30, 1921. ; GAGE. Stevens continuous water-stage recorder installed June 27, 1914, on left bank. Vertical staff at same location and datum used April 20 to June 26, 1914. Gage inspected by Mrs. W. J. Chester. DISCHARGE MEASUREMENTS. Made from cable at gage or by wading. CHANNEL AND CONTROL. Bed composed of rock and gravel; somewhat shafting. No well-defined control. At high stages stage-discharge relation may be affected by heavy growth of brush on bank. EXTREMES OF DISCHARGE. Maximum stage during period ending September 30, 1921, from water-stage recorder, 3.45 feet at 4 p. m. April 24 (discharge, 132 second-feet); minimum stage, 1.32 feet from 3 to 10 a. m. July 3 (discharge, 5.7 second-feet). A lower stage and discharge no doubt occurred during period of no record. 1914-1921: Maximum stage recorded, 4.81 feet May 17, 1917 (discharge, 424 second-feet); mimimum discharge somewhat less than 0.5 second-foot during July, 1919. ICE. Stage-discharge relation seriously affected by ice; observations discontin ued during winter. DIVERSIONS. Several small irrigation diversions above station. REGULATION. None. ACCURACY. Stage-discharge relation not permanent. Curve applicable October 1-25 fairly well defined; curve used April 12 to September 11, well de fined. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph except as noted in foot note to table of daily discharge. Records for discharges up to 10 second- feet fair; above this point records are good. Discharge measurements of Meadow Creek near Henry, Idaho, during the year end ing Sept. 80,1921 Gage Dis Gage Dis- Date Made by height charge Date Made by height chargo Feet. Sec.-ft. Feet Sec.-ft. Mar. 17 2.36 «8.7 A. G.Fiedler...... 1.75 14.9 May 2 A.G.Fiedler-...... 3.37 120 1.65 12.8 16 .-..do ..... ___,_ - 2.85 65.8 3 1.74 13.5 2.70 54.0 ..do...... 1.74 12 9 18 A.G.Fiedler . 1.55 9.7 Stage-discharge relation affected by ice. 82 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Meadow Creek near Henry, Idaho, for the yea ending Sept, 30, 1921 Day Oct. Apr. May June July Aug. Sept. Day Oct. Apr. May June July Aug. Sept. 1 . 11 109 53 8.2 12 15 16... 14 88 65 19 7.7 15 2.... 11 116 54 6.4 13 16 17... 15 86 63 18 8.1 13 3.... 10 _ ___ 117 57 5.8 15 17 18... 18 88 63 10 8.6 13 4.... 9.6 121 55 6.2 16 18 19... 20 92 . 64 9.0 10 13 5 .... 9.4 120 54 6.8 16 16 20 20 100 70 11 11 13 13 6.... 9.8 118 52 7.3 17 16 21... 18 100 72 13 10 13 7.... 10 ...... 124 52 7.5 18 16 22... 18 97 71 14 10 13 8.... 10 127 49 7.5 16 15 23... 17 108 67 14 13 13 9 .... 11 _ ___ 126 48 6.8 16 14 24... 17 126 67 16 12 12 10 12 121 44 6.4 17 13 25... 17 118 66 16 11 12 13 11-... 14 110 38 6.4 16 13 26 110 68 14 11 13 13 12. 14 91 67 30 6.5 16 27 102 70 12 12 12 13 13.... 14 67 89 26 6.8 15 ! B 28 97 65 8.8 12 13 13 14.... 14 34 70* w 22 7.1 15 29 96 62 8.4 12 13 13 15 14 42 71 20 7.3 15 1 30 105 58 8.6 12 13 13 31 54 12 13 "Interpolated. NOTE. Braced figures show mean estimated discharge for period indicated. No record obtained Oct. 26 to Apr. 11. No gage-height record; discharge interpolated Sept. 7-10, 26, 28, and 29. Monthly discharge of Meadow Creek near Henry, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Run-ofl in Month acre-feet Maximum Minimum Mean October 1-25 __ . ______. ______20 9.4 13.9 689 April 12-30 . _, _ ...... 126 34 91.8 3,460 127 54 86.8 5,340 June. ______. ______57 8.4 28.2 1,680 July...... 13 5.8 8.88 546 August __ . ____ : ______18 12 14.2 873 18 13.9 827 IDAHO (GOVERNMENT) CANAL NEAR FIRTH, IDAHO LOCATION. In sec. 13, T. 2 S., R. 36 E., 100 feet above double metal flume by which canal crosses Eastern Idaho Slough, a quarter of a mile below nearest highway bridge, l^j miles below point where Sand Creek crosses canal, and 5 miles southeast of Firth, Bingham County. RECORDS AVAILABLE. March 29, 1914, to September 30, 1921. GAGE. Friez water-stage recorder on left bank. Observers, Hall and Jensen. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Bed composed of silt, sand, and fine gravel; probably shifts slightly but flume heading just below furnishes what should be a per manent control for high stages. Point of zero flow at about 0.4 to 0.5 foot gage height. EXTREMES OF DISCHARGE. Maximum stage during year from water-stage re corder, 5.95 feet at 9 a. m. June 19 (discharge, 512 second-feet). Canal dry during winter. 1914-1921: Maximum stage recorded that of June 19, 1921; minimum flow zero on many occasions. ICE. Stage-discharge relation seriously affected by ice. No winter flow permitted. DIVERSIONS. None. THIBU.TABY BASICS 83 REGULATION. Flow partly regalated by Snake River head gates, 1$ miles and partly by gates at Sand Creek crossing, 1J^ miles above. ACCURACY. Stage-discharge relation changed slightly on August 6. Standard rating curve well defined below 400 second-feet; one parallel curve used. Operation of water-stage recorder fairly satisfactory except October 21 and 22. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph or by shifting-control method, except as noted in footnote to daily-discharge table. Records fair. Idaho (Government) canal diverts water from left bank of Snake River in sec. 31, T. 1 N., R. 37 E., and discharges into Blackfoot River in sec. 24, T. 2 S., R. 36 E. The canal also receives water from Sand Creek 1^£ miles above this station. Discharge measurements of Idaho (Governm&nt) canal near Firth, Idaho, during the year ending Sept. '80, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Mar. 31 1.58 27.6 July 27 T. R. Newell ...... 4.99 375 Apr. 27 T. R. Newell . 4 KQ ..do... . . 2.90 124 .. do... .. 5.14 412 Daily discharge, in second-feet, of Idaho (Government) canal near Firth, Idaho, for the year ending Sept. 30, 1921 Day Oct. Mar. Apr. May June July Aug. Sept., 1 ___ .. ... _ ..... __ .. _ .. _ .. 133 27 366 246 366 393 208 2...... - 240 27 379 276 393 393 170 3-...... 234 33 379 308 393 407 214 4 ______...... 228 52 366 264 449 393 250 5 . .-. .. _. .-. . 188 100 379 327 435 366 286 6 .. .._._ 205 110 379 435 393 224 244 7... . ._._ ._____ .. 210 99 379 407 393 79 197 8 .- ...... 194 88 393 379 368 119 175 9 ...... 205 85 393 340 407 138 129 10 ...... 222 81 393 252 393 121 175 11...... 205 75 393 216 366 108 186 12...... 183 78 393 210 366 143 164 13 .. _ ...... 183 84 393 234 353 181 164 14.... _ ..... __ ...... 178 112 366 258 353 244 153 15...... _ ... _ ...... 161 166 353 379 353 220 129 16...... 1AK 172 366 393 340 186 92 17...... 166 393 421 340 262 74 18 .. -...... 161 188 421 463 353 305 73 19...... 161 216 407 463 353 305 67 20. _ ...... 135 252 407 393 366 274 64 21...... 121 294 407 353 379 244 66 22...... 106 288 393 327 QQO 214 65 23 -. . 92 294 340 327 379 148 61 24...... ftl 327 327 393 133 58 25...... 42 42 340 327 353 379 143 91 26.. _ ...... 3 39 340 353 393 379 170 77 271...... 32 327 366 366 379 256 90 28 ...... OQ 327 340 314 366 OKA 89 29...... 27 327 314 097 ^70 96 30 ...... 23 353 *Jf)1 353 379 208 106 31 ...... 26 258 244 NOTE. -No record obtained Oct. 27 to Mar. 24. No gage-height record Oct. 21 and 22; discharge inter- polated. Maan of discharge used Oct. 26 and Aug. 6. Canal probably dry during period of no record. 84 SURFACE WATEB SUPPLY, 1931, PAET XII B Monthly discharge of Idaho (Government) canal near Firth, Idaho, for the year end ing Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean October 1-26 ... __ . _____ .... _ . ______. __ 240 3 160 8,250 March 25-31...... __ ...... __ ... . 42 23 31.1 432 April ...... 363 27 181, 10,800 May ______;. ___ 421 258 ser 22,700 463 210 338 20,100 July __ ...... 449 340 378 23,200 August ______>______407 79 229 14,100 September.. ______.. ______286 58 134 7,970 NOTE. Canal probably dry during period of no record. SAND CHEEK NEAK FIRTH, IDAHO LOCATION. In sec. 7, T. 2 S., R. 37 E., 400 feet downstream from point where Idaho (Government) canal crosses creek and 4 miles east of Firth, Bingham County. RECORDS AVAILABLE. December 21, 1916, to September 30, 1921. GAGE. Vertical staff on left bank on upstream side of highway bridge; read by P. W. Wernette. Prior to May 17, 1917, vertical staff on left bank, 300 feet 9 upstream. DISCHARGE MEASUREMENTS. Made from highway bridge or from small flume crossing creek 50 feet downstream or by wading. CHANNEL AND CONTROL. Bed composed of silt, sand, and fine gravel; probably not permanent. Banks clean; subject to overflow at high stages. Point of zero flow, about 0.2 foot gage height. Measured October 11, 1921. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 3.28 feet at 4 p. m. May 21 (discharge, 258 second-feet); creek reported dry June 5-8 and 11-13. 1916-1921: Maximum stage recorded, 4.34 feet at 7 a. m. on April 3, 1919 (discharge, 348 second-feet); minimum flow zero on days when regulation head gates were closed. ICE. Stage-discharge relation seriously affected by ice. DIVERSIONS. None between Idaho (Government) canal crossing and station. REGULATION. Idaho (Government) canal which crosses the creek 400 feet above the station receives the entire flow of creek as tributary and regulates flow returned to creek below by means of head gates. Above this point the creek channel is utilized as a waste ditch for numerous canal systems. ACCURACY. Stage-discharge relation changed during winter; affected by ice December 14 to March 8. Two well-defined rating curves used. Gage read to half-tenths once daily. Daily discharge ascertained by applying mean daily gage height to rating tables except as noted in footnote to daily dis charge table. Records good for open-channel periods. Discharge measurements of Sand Creek near Firth, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 24 T R Newell 2.21 126 T. R. Newell _____ 3.18 240 .do...... 02.48 34.4 21 ..-.do. .. . _ -- 3.28 266 TVfar *)A 1 44 66.5 July 23 ... ..do...... 52 10.6 Apr. 28 T T> "\Ta\i7-ftll 9 4A 166 Aug. 18 ..... do. ..-. . 14 2.6 "Stage-discharge relation affected by ice. TBIBUTAEY BASINS Daily discharge, in second-feet, of Sand Creek near Firth, Idaho, for th$ year ending Sept. 30,1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 ___ ...... 34 138 128 64 163 173 71 13 77 2...... 28 138 138 on 56 24O 163 71 13 3...... 22 148 128 56 227 133 71 13 7 4...... 22 138 138 56 227 133 91 13 7 5. __ ... __ . 17 148 109 56 216 0 81 13 6 6-^. .... __ . 17 158 49 130 56 227 0 171 13 5 7 . 22 148 22 56 237 0 171 18 5 8- __ ...... 17 138 17 64 227 0 13 18 5 9. __ ...... 17 148 41 93 73 227 3 9 18 5 10. __ ...... 13 148 34 83 73 227 3 7 7 5 ' 73 II ..,.-...-.. 17 158 41 83 227 0 18 7 5 12...... 17 148 65 73 64 227 0 13 5 5 13 ...... 17 148 57 73 64 238 0 13 5 5 14...... 13 118 83 64 227 23 9 5 5 15...... 17 118 40 73 64 227 54 9 5 7 30 16...... 17 128 64 64 238 54 9 5 7 17...... 17 118 64 73 '238238 47 9 5 7 18...... 91 138 56 123 28 9 2 7 19 .. _ ...... 91 109 46 56 , 123 238 121 9 3 7 20...... 82 118 56 143 238 151 9 3 7 21...... 138 118 56 143 248 151 9 3 7 22:...... 148 128 56 163 227 151 9 3 7 23...... 148 128 48 173 227 28 14 5 7 24...... 109 126 59 183 216 28 9 5 7 25...... 138 128 48 183 216 18 9 5 7 26...... 138 128 48 173 216 18 7 5 7 27...... 138 138 34 56 173 216 18 7 5 7 28...... 138 158 64 168, 216 54 13 5 7 29...... 148 158 64 163 71 13 5 7 30-...... 138 138 64 163 62 18 5 7 31 148 64 173 18 5 NOTE. Stage-discharge regulation affected by ice Dec. 14 to Mar. S discharge estimated from one dis- charge measurement, study of weather records, and observer's notes. Creek dry, June 5-8 and 11-13. Monthly discharge of Sand Creek near Firth, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off Jn Month acre-feet Maximum Minimum Mean 148 13 68.3 4,200 158 109 137 8,150 138 54.8 3,370 30.0 1,840 February ______.. . ______...... 40.0 2,220 March. __ . _ . __ ^. ______... __ ...... 48 77.5 4,770 April...... __ ...... __ __ ...... ______183 56 105 6,250 249 163 224 13,800 June. __ . __ __ . __ ..I. ______173 0 56.2 3.340 July...... ,.. 171 7 31.9 1, 960 18 2 7.58 466 September .. ______. 7 5 6.37 379 The year ____: ______, ...... 249 0 70.0 50, 700 NOTE. See footnote to table of daily discharge. FORT HALL UPPER CANAL NEAR BLACKFOOT, IDAHO LOCATION. In sec. 13, T. 3 S., R; 35 E., 500 feet below head gates and . miles southeast of Blackfoot, Bingham County. RECORDS AVAILABLE. May 8, 1912, to September 30, 1921. 86 SURFACE WATER SUPPLY, 1921, PAET XII B GAGE. Stev,ens eight-day recorder on right bank installed July 20,1921; referred to vertical staff in stilling well near center of concrete rating section. Bristol water-stage recorder used during 1912 and parts of 1913 and 1914. All gages set to same datum and at practically same site. Gage read by ditch rider and gate tender. DISCHARGE MEASUREMENTS. Made from suspension footbridge at gage or by wading. CHANNEL AND CONTROL. Concrete trapezoidal rating section. EXTREMES OF DISCHARGE. Maximum discharge during period, 521 second-feet August 1; canal dry during various periods in winter. 1912-1921: Maximum discharge that of August 1, 1921; canal dry during various periods in most winter seasons. ICE. Observations discontinued during winter. DIVERSIONS. None above station or for several miles below. REGULATION. Flow regulated at head gates 500 feet above. ACCURACY. Stage-discharge relation not permanent. Three fairly well defined rating curves and one parallel curve used. Operation of water-stage recorder satisfactory July 20 to September 30. Gage read to hundredths twice daily May 8 to July 20. Daily discharge ascertained by applying to rating table mean staff gage readings or mean daily gage height obtained by inspection of recorder graph. Records good. Fort Hall upper canal diverts water from left bank of Blackfoot River in sec. 12, T. 3 S., R. 35 E., for irrigation on Fort Hall Indian Reservation. Discharge measurements of Fort Hall upper canal near Blackfoot, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis- Date Made by height charge Date Made by height ctfarge Feet Sec.-ft. Feet Sec.-ft. May 10 T. R. Newell...... 0: 87 21.7 July 13 5.45 440 ....-do. - _ ..... 2.85 182 - 14 C. F. Elford-- 5.45 452 4 C. F. Elfordo-. __ 3.22 224 26 . do 5.62 497 10 .....do...... 3.35 232 Aug. 17 .....do 4.49 397 11 do . . 3.20 220 22 T. E. Newelb . 4.28 371 27 .....do ...... 136 C. F. Elford - - 4.56 401 o Employee of State commissioner of reclamation. Daily discharge, in second-feet, of Fort Hall upper canal near Blackfoot, Idaho, for the year ending Sept. 80, 1921 Day Oct. May June July Aug. Sept. Day Oct. May June July Aug. Sept. 1 ...... 212 160 237 521 381 16 ...... 29 327 448 407 299 2 __ .. 202 166 307 513 386 17...... 40 345 451 400 274 3-...... 60 187 327 502 392 18 . 50 337 456 382 293 4..... _ .. 218 377 491 398 1Q 78 362 459 363 298 5 ___ .... 218 406 401 383 108 375 466 363 294 6...... 252 411 499 354 21...... 104 377 475 373 287 7...... 257 421 489 333 22...... 108 377 479 376 256 8 12 269 437 469 342 23...... 99 375 485 387 245 9 __ ...... 23 442 451 333 24...... QQ 385 490 398 238 1 0...... 25 247 41fi 430 328 25 104 66 493 404 245 11 ...... L 29 234 434 425 338 26...... 130 82 496 398 239 12...... 29 227 442 430 332 27... _ .... 130 144 499 403 231 13...... 29 242 442 417 323 28 128 144 502 396 215 14 _____ .. 29 247 442 404 322 29. 130 144 504 382 206 15 __ ...... 40 297 446 412 315 30.... _ 130 158 510 386 31 144 516 380 NOTE. No record obtained Oct. 4 to May 7; canal gates closed. Mean of discharge used Oct. 3. i TMBITTAEY BASINS Monthly discharge of Fort Hall upper canal'near Blackfoot, Tdahti, for Jfe? year" ending Sept. 3 Discharge in second -feet Run-off in Month acre-feet Maximum Minimum Mean 212 60 158 640 May 8-31...... - ._ 144 12 76.1 3,620 385 66 249 14,800 July -- . . - . _. 516 237 443 27,200 521 363 424 26,100 398 192 302 18,000 Note. See footnote to table of daily discharge. FORT HALL LOWER. CANAL NEAR BLACKFOOT, IDAHO LOCATION. In sec. 15, T. 3 S., R. 35 E., 200 feet below ford where road to head gates half a mile above crosses canal and 2J^ miles southeast of Blackfoot, Bingham County. RECORDS AVAILABLE. May 15,1912, to September 30, 1921. GAGE. Stevens eight-day recorder on right bank installed July 14, 1921; referred to inclined staff on right bank near center of concrete rating section; read by ditch rider for United States Indian Service. Bristol water-stage re corder at same site, datum 1.53 feet lower, used from 1912 to 1914. DISCHARGE MEASUREMENTS. Made from suspension footbridge at gage. CHANNEL AND CONTROL. Channel at gage is trapezoidal concrete rating section, at sides of which sand and silt have been deposited. Principal control is a wooden check across canal about one-third mile below gage. Variations in amount of water carried in a large lateral that diverts between gage and check and growth of moss and weeds in canal causes several changes in stage- discharge relation during each season. EXTREMES OF DISCHARGE. Maximum discharge recorded during period, 346 second-feet June 26; canal dry during various periods in winter season. 1912-1921: Maximum discharge recorded on August 2, 1920, 412 second- feet; canal reported dry on numerous dates. ICE. No records obtained during winter. Small quantities of water are run at times for use of stock, but head gates are closed during greater part of winter. DIVERSIONS. None above gage; one.large and one small lateral divert between the gage and check that forms main control. » REGULATION. Flow regulated at head gates half a mile above gage. ACCURACY. Stage-discharge relation not permanent; affected by variation in quantity of water diverted immediately below gage, by variable conditions at control cheek and by growth of aquatic vegetation. Standard rating curves fairly well defined; several parallel curves used. Operation of water- stage recorder satisfactory July 14 to August 25 and September 1 to 29. Staff gage read to hundredths twice daily during remaining periods. Daily discharge ascertained by applying to rating tables mean staff gage reading or mean daily gage height obtained by inspecting recorder graph. Records good. Fort Hall lower canal diverts water from left bank of Blaekfoot River in sec. 11, T. 3 S., R. 35 E. Water is used for irrigation on Fort Hall Indian Reservation. 88 SURFACE WATER SUPPLY, 1901, PART XII B Discharge measurements of Fort Hall lower canal near Blackfoot, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Oct 9 0.12 "1.5 C. F. Elford ...... 3.98 334 ItfflV Ifl -dp...... 1.12 53.3 July 13 3.89 316 28 C. F. Elford & ...... ; 2. 49 186 15 C.F. Elford...... 3.81 311 2.67 206 26 .....do.- _ ...... 3.78 282 C.F. Elford ..... _ 2.67 206 do . 3.35 198 10 ....-do...... 1.81 116 22 T. R. Newell ...... 3.36 198 20 3.95 330 25 C. F. Elford,...... 3.54 224 "Discharge estimated. & Employee of State commissioner of reclamation. Daily discharge, in second-feet, of Fort Hall lower canal near Blackfoot, Idaho, for the year ending Sept. 30, 1921 ; Day Oct. May June July Aug. Sept. Day Oct. May June July Aug. Sept. 195' 1.... _ 174 187 ,328 297 183 16 115 265 314 .12S 2...... 181 187 328 286 179 17 125 288 325 195 132 3 _.j.^ 185 202 304 288 170 18 135 289 321 196 124 4 181 155 282 284 173 19 _ 153 331 322 201 124 : 278 ' 177 20 ' _ 170 325 202 5 181 ',' 163 328 329 138 6...... 174 204 227 256 162 21 167 322 323 200 145 ,. . , --S187 287 99Q 22...... 165 322 t'328 199 143 182 ,287 228 140 23...... 176 325 3,26 196 140 9 .1. ... . '45 165 304 229 139 24 -167 '3221 ; 321 209 137 10 , 54 137 9Ofi ,324, i4n 25 178 334 , 305 220 138 ' 11. _ ... 39 121 298 '99d 140 26 . ; ' 176 334 284 199 141 12- 45 116 310 2§6'226 138 27 170 328 279 194 149 13 ...... 60 139 319 141 28 179 328 286 188 146 14, . .- 60. ,17« 319 . 197 140 29-^,. 176 32.8 288 183 148 15 82 248 314 139 30 _ .... 176 331 294 183 146 31 176 296 183 j NOTE. No record obtained Oct; 7 to May 8; canal gates supposedly closed. j Monthly discharge of Fort Hall lower canal near Blackfoot, Idaho, for the year ending,Sept. 30, 1921 Discharge in second-feet Run-off in Month .;acre-feet Maximum Minimum Mean A ' '' October 1-6 ______. ___ ...... 185 17439" '' ''" 179130 2,13P May 9-31 .-. _ ' 179 5,930 334 116 . , - 245 14, 600 July-:. 328 227 ' 305 18,800 297 .183 220 .13, 500 183 124 146 8,690 MUD LAKE AT TERRETON, IDAHO . ,. . , , LOCATION. In SW. ^ sec. 13, T. 6 N., R. 34 E., 500 feet north'of pump house in intake canal of Owsley Canal Co. on ^outh side of lake, 1 mile west of Terreton, 14 miles southwest of Hamer, and 19 miles northwest of Roberts, Jefferson County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 4 to September 30, 1921. TRIBUTARY BASI2STS GAGE:. Vertical staff on left bank of; intake ( canal; read by t P. D. During irrigation season when water surface.of intake canal is affected by draw down from pumping, an auxiliary staff at same, ,datum: located at Beckner's ranch on jiorth shore ,of lake is used; read by A. M- Beckner. Elevation of zero of gage is 4^775,33 feet above mean sea level. EXTREMES OF CONTENTS.* Maximum stage recorded during period April 4 to September 30, 8.65 feet June 7-9 (contents, 55,040 acre-feet); minimum stage, 3.94 feet September 14-19 (contents, 16,160 acre-feet), ,.f , , ICE. Ice at gage renders observation difficult at, tiiaaes. . . r ' DiVERSioNs.r-T-Considerable water diverted from, .tributaries to;,Mud .Lake, During the year approximately 40,700 acre^feet were, diverted from the Jake (includes Rays Lake, Sandhole Lake, and all other ponds and sloughs directly adjoining which are affected by backwater when Mud Lake is at,high stage) to irrigate about 11,050 acres. , , REGULATION. None except as the supply in the lake is affected by pumping operations. , . , COOPERATIO-N. Gage heights furnished by Owsley Qanal. Co.y and by A. M. Beckner for readings made on auxiliary staff. , Daily contents, in acre-feet, of Mud Lake at Terreton, Idaho, for the period April 4 'to Sept. SO, 19%1 : ! " . Day Apr. , May June July Aug. Sept. Day APr- .May June July Aug. Sept. i 1 46, 900 53,390 42,710 26.430.,_.. 16, 930 16.... 44, 700 48,450 52, 390 34, 140 ?0, 340 16, 160 2 44, 700 53, 770 42, 170| 26. 030 16, 830 17.... 44,820 48,690 51,890 33, 630 20, OCO 16, 160 3 46, 670 54,020 41,640 25,640 16,720 18 .... 44, 820 48,940 51, 270 33,120 19, 620 16, 160 4 __ 43,920 46,550 54,400 40,920 25,120 16,620 19 44,930 48,940 50,650 32,550 19, 350 i6,ieo 5 ..... 44,140 46,900 54,400 40,400 24, 740 . 16,520 20 45,280 49,300 50,040 32,060 19,080 16,220 6.... 43,040 46,900 54,780 39,700 24,360 16,470 21.... 45,280 49, 67C 49,420 81 ;570 18, 870 16,220 7 _ . 42,490 47,260 55,040 39, 100 23,930 16,420 22.... 44, 820 50,040 48, 820 31,090 18, 600 16,220 8..., 42, 070 47,260 55, 040 38, 610 23,500 16, 370 23 45,040 51, 270 48, 210 30, 610 18,390 16,220 9 .... 42, 710 47,260 55,040 38,030 23,130 16,320 24 46, 110 51,020 47,500 30,060 18,180 16,220 10 .... 42,930 47,620 54,910 37, 450 22,710 16,270 25 .... 46,110 51, 270 46,900 29,600 17, 970 16,220 11 .... 42,930 47, 020 54, 780 36,800 22,290 16,270 26.... 46,110 51,520 46,200 29,070 17,760 16, 2SO 12 .... 43,040 47, 620 54, 530 36,340 21,940 16, 220 27.... 46, 200i 50, 040 45,500 28, 630 17,600 16, 220 13 _ . 43,040 47,860 54,020 35,800 21,530 16,220 28 48,200 52; 620 44,820 28,190 17,460 16,250 14 .... 43,800 48, 210 53, 520 35, 270 21, 130 16,160 29 46,440i 52,820 44,030 27, 750 17,290 16.2KO 15 _ . 44,480 48,210 53,020 34, 740 20,730 16, 160 30 46.440J 52,520 43,470 27,330 17,140 1«,220 31 53,020 26,840 17,030 NOTE. Contents interpolated May 21. During period June 5 to Sept. 30, when water surface in Owsley Canal Co.'s intake was affected by pumping operations, records were based upon graphical comparison with gage readings obtained, from auxiliary staff at Beckner's ranch on north side of lake. CAMAS CREEK NEAR DTTBOIS, IDAHO LOCATION. In NE. ^i SE. $i sec. 13, T. 11 N., R. 38 E., 2 miles north of Lone Tree reservoir, 3 miles downstream from 18-mile shearing; corral, 5K miles south of Idmon, and 19 miles northeast of Dubois, Clark County. Station is 26 miles north (upstream) of gage on Camas Creek 4ear Camas. DRAINAGE AREA. 216 square miles (measured on United States Geological Sur vey map of Mtid Lake drainage basin). .RECORDS AVAILABLE. April 11 to September 30, 1921. GAGE. Stevens continuous water-stage recorder on right bank; inspected by J.; L. Hoffman. Prior to May 7, 1921, a Stevens eight-day water-stage register was used at same location and datum. DISCHARGE. MEASUREMENTS. Made at high stages from Wagon bridge 2 miles upstream at which point during extreme high stages water flows in a flood channel to the left of main, channel and unites a,bove the gage. Measured by wading at low and medium stages 300 feet above gage. SURFACE WATER SUPPUY, 1921, PART XII B CHANNEL AND CONTROL. Bed composed of lava boulders and gravel; perma nent. Banks fairly high and brushy; subject to overflow on right bank. Control well defined. EXTREMES OF DISCHARGE. Maximum stage during period April 11 to September 30, from water-stage recorder, 4.92 feet at noon May 29 (discharge, 1,090 second-feet); minimum stage, 1.05 feet July 23 and 24 (discharge, 28 second- feet). ICE. No record. DIVERSIONS. The stock-watering ditches of the Wood Live Stock Co. are the principal diversions above station. In addition, a number of small irrigation ditches divert water from tributaries above. REGULATION. Some water stored in Frazier reservoir, which has a capacity of 2,000 to 3,000 acre-feef", on West Camas Creek, and released during low water period for use above gaging station. ACCURACY. Stage-discharge delation, 'permanent. Rating curve well defined. Operation of water-stage recorder satisfactory except for short periods in June and one- week in September. Daily discharge ascertained by applying to rating table mean daily gage height determined from inspection of re corder graph. Records good. COOPERATION. Gage-height record furnished in part by Camas Mutual Irrigation District. Discharge measurements of Camas Creek near Dubois, Idaho, during the period Apr. 11 to Sept. SO, 1921 « [Made by L. L. Bryan] Gage Dis Gage Dis Gage Dis Date height charge Date height charge Date height charge Feet Sec.-ft. Feet Sec.-ft. Feet Sec.-ft. May 6...... 3.79 "577 2.64 c220 July 25...... 1.08 29. « 21 4.30 6800 July 2 ..... 1 48 61.8 Aug. 22...... 1 -10 33.1 Includes 56.2 sec.-ft. flowing in flood channel on left bank, ft Includes 79.6 sec.-ft. flowing in flood channel on left bank, c Includes 19. l sec.-ft. flowing in flood channel on left bank. Daily discharge, in second-feet, of Camas Creek near Dubois, Idaho, for the period Apr. 11 to Sept. 30, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 _*.... . 800 L 55 33 40 16...... _ . 189 562 220 31 44 43 2...... 776 I 7.50 57 35 39 17...... 199 800 206 30 41 43 Z...... 753 64 36 43 18 191 944 188 30 39 43 4 _ ...... 562 507 70 36 62 19 218 1,020 180 30 36 43 5 ...... 562 65 35 64 20 228 944 30 36 42 6...... ' 581 55 36 21...... 202 824 140 29 34 42 7 _ _ .... 543 450 45 35 50 22...... 210 663 30 33 41 8...... 601 43 36 47 23.. ___ .. 279 562 ' 28 33 40 9, .. - 562 39 35 24 290 543 94 36 40 10 . ... 543 36 35 45 25...... 331 753 90 30 36 39 11 123 507 389 36 35 45 26.. _ ..... 471 730 87 30 39 39 12...... 134 489 38 35 43 27...... 489 642 83 30 40 38 13...... 177 507 36 34 42 28.... ___ . 543 848 80 32 41 46 14 ___ - .... 175 507 300 33 43 29...... 525 1,060 81 33 43 38 15 ...... 166 489 32 53 42 30 663 992 64 34 46 33 31 ..... 750 31 43 NoTE.^Braced figures show estimated mean discharge for periods indicated. No gage-height record June 25-27 and Sept. 20-26; discharge interpolated. TBJBUTABY BA3O5B? of Camas Greek near Duboiz, Idaho, for the period Apr. 11, Sept. 30, " Discharge in second-feet Run-off in Month acre-feet Maximum Minimum |^E«an ;. April 11-80.. __ ...... -.. , ,... .. 683 133 290 11,500 May...... , ...... ,..,...... 1,0% 489 691 42,500 64 299 17,800 July ...... -.. ..,- .. -... TO 28 88. 4 2,360 August . -, --. 53 as 37.8 2,320 84 33 43.9 2,910 T'ho nnrinrl 79,100 CAMAS CREEK HEAR CAMAS, IDAHO LOCATION. In NE. ^ sec. 34, T. 9 N., R. 36 E., Clark County, a quarter of a mile south of C. J. Thompson ranch, 1 mile east of Oregon Short Line Rail road track, and 5 miles northeast of Camas, Jefferson County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 1 to September 30, 1921, * ' GAGE. Vertical staff on right bank; read by George McDonnall and J. L. Hoffman, successively. DISCHARGE MEASUREMENTS, Made from wagon bridge 500 feet upstream from gage at high stages and .toy wading at low and medium stages. CHANNEL AN» CONTROL. Bed composed of lava covered in places by gravel. Control well defined by lava boulders. 3anks high; one channel at all EXTREMES OP DISCHARGE. Maximum stage recorded AvLflo^^i^&d April September 30, 4.4 feet, May 2$ jtfgchacge, 530 second-feet)jmi 0.5 foot September 30 (dif^fe^raj^^ second-feet). . " * ICE. None during jpei^.j^jp^jpjft '_ ', . . DIVERSIONS. A numbw ^ ifilgfttion and stock-watering diversions abovfestatioa. REGULATION. Flow ££$$ fifl&ion regulated to some extent by operation of gates at Lone T?ee reserYxiflfc, §4 miles upetreto. ACCURACY. ||^ag$-4ischarge relaiioa jperman^nt. Rating curve well defined bejgpjf SOQseporid-feet. Gagf reidjfo hundredttis qnqe daily. Daily discharge delernil»ed by applying dafly gage height to raiihg table. Records good. . Gage-height" record furnished by' ''' Camas " ' , Mutual' Discharge measurements of Cdmas Creek near Camas, Idaho^, to Sept. 80,1ml "jt*i !-?'*Vi!l. * Gftaj^' 'ife.' Gage Dis Date Made by height charge Pftte Mad^,by-^/ ; height fite^ge \ n - -« «^.^»;.K Feet Sec.-ft. F«t $ec.-ft. Apr. ,2 1.06 34.0 May 20 lr.L..Bryaa. .- -..-, a,ft0 447 16 .;... do . ... __ 'j... 1.68 87.9 Jane 37 .L-^do.,..,.^,^..,., VW- 41.1 25 Paulsen and Bryan 1.79 101 27 .do .,.,p7+,..^,4i,^w; ^m 25.4 Mi\ 10 2.09 139 .:...d6....;.^r^V^ ,,.r-.78 18. 4 U234 SURFACE WATER .SUPPLY, 19gl, PAIIT XII- B Daity discharge, in second+faet, of Gatitas Creek near Cetmas, Idaho, for the > i to Sept: 80,W®1 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 _____ ?» 108 345 28 17 20 16 ...... 74 108 47 29 21 *1U» 2...... 33 M 4Q9 : 23 17 1Q ,17 __ ..... 70 262. d«t 30. -.22. *1» 3- ...... 48 160 417 25 19 19 18. ____ - 84 417 42 28 20 IT 4...... i 359 381 24 ID 17. on 436 --39 30- 20 .Sf.-jr'-'" i* 6 ...... 47 167 196 24 1ft 20 30...... 90 454 38 26 21 6 ._.. . 16 167 lid 24 19 -23 21...... OR 39ft 35 24 22 i* ' 7 __ . 38 J6B 108 22 20 2& 22...... - 102 31ft 31 21, 22 14 8...... 41 140 102 24 OA 3» .23...... 9«. 240 30 .IS 20 IS «. __ . _ , # 160 10? 2ft 19 19 24. ___ .. 102 160 28 19 It 10.....^ _ .. 50- 140. flO 26 17 -1£ 25...... 102 127 . -2Z- 20 20 12 R4' ' 17" "102 ... gj.- 11 ...... 54 127 22 18 26::;...... 310 IS 2CT IT 12 ...... 67 114 79 25 17 18 27... __ .. 102 219 » 18 20 IP 13. ___ ... 74 114 7*. !° 17 1» '^-i^^ W -304 23 17 22 10 14...... 74 108 63 * 18 17 29...... 102 530 23 17 20 9 15... __ .... 79 114 .52 28 19 .18,, 80.. , .,... 102 4H 22 ,17 21 a 31 ...... L.^ 31ft 17 21 ^ Nora. Discharge estimate*! Apjc. i. Gage not read May 17; 19, 2?, 23» Jflly5,:27, 8, Aug. 1«;;24, 25, Sept. 2,5,11, and 18; discharge interpolated. Monthly discharge of Camas Creek near Camas, Idaho, for the period Apr. 1 to ':.-. . . so, Discharge in second*feet Run-off in Month acre-feet , Maximum Minimum ' Mean April..... __ ... __ ...... __ ...... I...... 102 16 72.4 4,310 May ____ ...... __ . ____ ...I ______530 108 , 229 14,10? June __ _ . __ . ______...... ,.->» 492 22 10Y 6,370 30 17 23.8 ABfeUSt" ' ' " ' ' ^ '.- « 22 17 19,5 l|200 B&pwmber.- ______....- _ - 23 9 1613 , 970 The period ___ . ______28,400 LOCATION. In NW. ^ sec. 21, T.lOhjNV, R. 36 E., at Ed E* Palmer ranch, half a mile north of Dubbis, Clark County, This stream is often called Dry Creek by local inhabitants. , . DRAINAGE AREA. 220 square miles (measured on United States Geological Sur vey map of Mud Lake drainage basin). REC!QBS)i3« J^AILAPLE. April 15 to September 30, 1921. GAGE. Vettical staff attached to cottonwood tree on left bank, 25 feet below wagon bridge; read by Ed F; Palmer. MEASUREMENTS. Made from wagon bridge or by wading. CONT»0L. Bed composed of lava rock and gravel. Control fairly well defined but oeifeasionally fouled by drift. Banks steep and brushy. One at all stages. GIF DiscHAftdE. Maximum stage recorded during period April 15 to 4,65 feet May 19 (discharge, 538 second-feet); minimum stage foot August 24 and September 2 (discharge, 13 second-feet). IcjB,-~?&8C^P4 sol commenced uaatttljBlt^r ice conditions disappeared. , 4. few small diversions several miles upstream. After high water the entire flow is diverted below gage for irrigation. KA.SINS ACCURACY. Stage-dis6iii*ge! relation cfeai&geS:d»Miig Mgh water. Two curves well defined between feet, respectively, were f9rmer above ISO second- , ,. __ _, __ , . -- _.,..----. . t^ Gage read to himdredths once daily. Paily discharge ascertained by apply ing daily gage height to rating tables. Records good. ' " '' A ' r Discharge measurements of Beaver Creek [at Dtibdis, Idaho, during thd peifvodApr: 1$ 1 toJ~. '.o^_i ias-i- . rf/l/n-A i -' ' . t Gage Dis- Made by height cfaaige Pftte, Feet Sec.-ft. , Apr. 15 2,67 June 17 L. Bryan...,...T,.., 13»r Bryan kn& Batil?en. 2.M 98.4 ' '$3.8 May-16 L« J/v. jJrj^jQQ** ''' -"'- 240; Ido III ^IZ ' -. 14.1 20 ... ::do; ...... '4.'18 417 Daily discharge,'in secon&feet,of Beaver Oeefc at Dubois, Idaho, for the period Apr. 15 to Sept. SO, 19£1 i * , Day Apr. May June Jtriy Aug'. Siept: ; 'Day'- " Apr. May June July Aiif. Sept. ':-- "14 1 ____ . 126 538 44 25- 16 ...... 1. 198 278 -127 22 26 19 2.. _ . .... 190 430 51 26 13 17...... 256 477 121 22 21 18 8. ..-..* 190 55 23 ,H 18.....,,... 319 115 20 19 IS 4- .. _ _ 17fi 329 'fifr '20 38 '19...... ai9 538 109 If ,17 , lis 6 ...... 221 307 51 19 . 25 20. ....^i... 221 420 98 19 16 23 6 ... __ .. 338 -266- -4» --16- .^21 -21.-,,..-,.^..'. 150 393 -87- -46 -46- - 21 7... __ .. 238 266 36 20 20 22.. _ . .... 120 276 82 18 14 20 8 ...... 276 ,248 31 20 20 23:...... 176 342 " 72 18 14 ,; 19 9 ...... 256 248 26 16 19 24...... 114 319 68 18 13 18 10 .. ...-... 231 ,-2S - 16 .23 25 ...... 103 -507. .64 id _14 11. _ ..,:. 238 186 25 . 18 22 26 .. ..'. 87 393 59 22 14 18 -221- 12. ___ :.;_ 166 26 16 22 27C...... 82 342 59 an 15 ' 0818 13.. __ .... -23fr -153 31 --16 21 28- ____ . 82 426 55 20 16 14 __ ...... 221 133 27 20 20 29, - .... 103 -448- ..-51 19, ...16' 19 16 ...... 13S 230 127 2.5 25 20 .80 ...w..,.,. 126 342 43 '1818 IS !| 31- . 342 16 Monthly discharge of Beaver Creek at Dubois, Idaho, for the period Apr. 15 to Sept. 30, 19S1 Discharge in second-feet Run-off in Month acre-feet Maximum Minimam Me^n April Ifr-SO,.....-...... 319 , 82 162 5,140 '638 126 312 19.-200 53$ 43 174 July ...... _ ...,.^..... 55 I ' ,; 16 27.7 ' ' 3826 ' ; 13 , 18.0 l|llO 13 19.8 1,180 'PH A nftri rU\ - 38,700 SURFACE WATER SCMPLY, 1921, PART XII B ;B Gage Dis 'Gage Dis Date Made- by height charge Date Made by height charge Feet Sec.-ft^ Fed Sec.-ft. Apr. 26 1.82 55.- 1 1.14 13.2 2.00 73.7 27 .do . 0 20, 2.51 116 Daily discharge, in second-feet, of Beaver Creek at, Camas, Idaho, for the period Apr. 25 to Sept. SO, 19%1 Day Apr. May June Day Apr. May June Day Apr. May June I,...,-.- 43 153 11 __ . .... 90 79 21. _ . _ . 124 2 . 55 153 12 __ .. ... 88 71 22...... 124 3 79 . 143- 13 __ ..... 84 58 23...... 127 7Q 133 14...... 79 44 24 __ . _ . 130 71 124 15 84 27 25..... _ . 57 133 6_ 75 133 16...... 88 26 26. ____ . 46 133 "i...... 79 124 17 __ . .... 102 13.3 27 40 124 *...... 97 115 18 . 113 4.0 28 ai 133 9 . 97 124 19 __ . .... 124 1.1 29 __ . .... 22 143 10 Q9 97 20 __ . .... 124 30 __ ..... 18 143 31 __ 148 NOTE. Stream reported dry prior to Apr. 3 and June 20 to Sept. 30. Flow past station Apr. 3-2 estimated at 1,390 acre-feet No gage-height record May 6, 11, 18, 23, 24, and 31; discharge interpo- la ted. XBIBTJTAKT Morithy dtichwg* of 'Beaver Creek at Cantons for.. th« period s <:$5 (10 ' . Sept. 30jl9%ll Discharge 'to -SecdBd-feet ' ' Run-off in Month acre-feet M/ftximiita Mjiiimufli Mean April '35-30...... ;.1. _ .....V. -. - ..-- _ - , & ' 18 85.7 425 May..... _ .... _ ...... i...... 148 43 103 «,S30 153 0 54.1 3,220 9,980 NOT#. See footnote to taJJle of daily discharge. " ! MEDICINE LODGE CREEK NEAR SMALL, IDAHO LOCATION. In NW. ^ sec. 25, T. 11 N.,;R. 34~E., 400 feet west of H. W. SmalJ's ranch house, 1 mile below mouth of Indian Creek, 3 miles northwest of Small, Clark County, and 12J^ miles west of Dubois. DRAINAGE AREA. 270 square miles (measured on United States Geological $ur- vey map of Mud Lake drainage basin). RECORDS AVAILABLE. April 19 to September 30, 1921. GAGE. Vertical staff on right bank; read by H. W. Small. DISCHARGE MEASUREMENTS. Made from footbridge 8 feet below gage or by wading. CHANNEL AND CONTROL. Bed composed of lava covered mostly by gravel and sand; fairly permanent; gradient steep, Control well defined except at high stages. Channel winding. Banks low and wooded; right bank subject to overflow during high water. EXTREMES OF DISCHARGE. Maximum stage recorded during period April 19 to September 30, 2.8 feet June 1 (discharge, .196 second-feet); minimum stage, 1.08 feet September 29 and 30 (discharge, 52 second-feet). ICE. None during period of record., .... ^ , DIVERSIONS. One small diversion from tributary above. Numerous diversions below station utilize practically entire fk>w during irrigation season. ; RBGTTLATION. None. ACCURACY. Stage-discharge relation permanent. Rating curve well defined below 160 second-feet. Gage read to hutodcedths once, daily. Daily dis charge determined by applying daily gage height to rating table. Records good. . Discharge measurements of Medicine Lodge Greek near Small, Idaho, during the period Apr. 19 to Sept. SO, 1921 Gage Dis Made'Dy^- ' Gaffe Dis Date Made by height charge Date height charge Feet Sec.-ft. Feet S«c.-«. Apr. 26 Bryan and Pauteen _ i 1.40 77.6 July 18 1.80 84:6 May 19 L. L. Bryan __ r; __ 2.14 133 Aug. 14 i-.- do.;...... ^..-..... 1.64 93.6 June 27 1.88 113 i $6 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Medicine Lodge Creek near Small, Idaho, for ike period Apr: 19 to Sept. SO, Day Apr. May June July ; Aug. Sept. Day Apr. May June July Aug. Sept. i...... 78 196 106 90 66 16 ____ .. HO 176 90 82 59 2. ____ . 110 176 118 94 62 17...... 131 176 86 78 59 3-. .... 94 176 114 OR W . is 140. 158 86 74 66 4 ...... 98 176 110 OS 62 id 82 140 149 98 . 74 52 '5, ...... 110 176 106 90 62 20 78 140 140 90 70 S6 98 176 102 90 62 21 . 78 140 131 94 70 56 -.7 ...... 98 176 94 90 62, 22 __ . __ . 74 131 122 90 ,70 56 8. _ ...... 102 176 94 86 62 23 ___ .... 86 140 118 86 66 56 9...... 04 186 90 82 62 74 149 122 86 70 69 10 ...... 98 176 86 82 66 26 ...... 74 158 122 94 66 56 11.. __ . ... 90 176 90 78 59 26 __ ...... 74 158 118 90 66 56 90- ' 82 12.. ____ . 90 176176' ,5ft 27 . _ ...... 74 158 114 86 70 52 13 . 90 90 82 59 28 __ ...... 70 167 110 86 66 52 14...... 94 176 90 82 59 29 ...... 74 167 106 90 66 52 15 ...... 90 176 82 £9 30, _ . __ . Sfi 167 1051 90 66 52 31 __ . __ . 167 86 62 Monthly discharge of Medicine Lodge Creek near Small, Idaho, for the period Apr. 19 to Sept. SO, 19S1 Discharge in, second-feet Run-off in Month acre-feet Maximum Minimum Mean April 19-30 __ ...... ___ . ___ . *...._ ... _ r 86 70 77.0 1,830 May, ...... __, 167 78 122 7, 500 June ______. ______...; ...... 196 102 154 9, 160 July...... 118 86 93.5 5,750 August __ . ______. _____ . __ ...... 98 62 78.1 4,800 66 82 58.3 3,470 32,500 BIRCH CREEK NEAR RENO, IDAHO 2 LOCATION. In sec. 13, T. 10 N.y R. 29 E., 6 miles northwest of Renoposfc office at old Worthing ranch, near abandoned post office of Kaufman, and 45 milea (by road) west of Dubois, Clark County, DRAINAGE AREA.-r-Not measured, ' ' RECORDS AVAILABLE. September 5,1910, to June 30, 1912, and April 1 to Sep tember 30, 1921. . GAGE. Vertical staff on left bank, the same as used when station was established September 5, 1910, and at approximately the same datum; read by Blanche Bare. DISCHARGE MEASUREMENTS. From footbridge or by wading. CHANNEL AND CONTROL. Bed composed of lava outcrop and gravel. Banks fairly low but not subject to overflow. Control well defined; affected by aquatic growth at times. EXTREMES OF. DISCHARGE .- -Maximum stage recorded during period April 1 to September 30, 2.05 feet May 16-18 (discharge, 95 second-feet); minimum stage, 1.85 feet .June. 15, 16 , and July 16 (discharge, 68 second-feet). 1910-1912 and 1921: Maximum stage recorded, 2.20 feet March 2, 1912 (discharge, 160 second-feet); minimum stage that of June 15,16-, and July 16, 1921. * Formerly designated ' 'Birch Creek near Kaufman, Idaho." ICE. Sekkfon affected by ice on account of springs which feed fclte creek above DIVERSIONS. A few ranches divert water for. irrigation above and numerous diversions' below station. REGULATION. None at present. Dam site proposed for reservoir of the Birch Creek Irrigation Co. is about one-fourth mile upstream. ACCURACY. Stage-discharge relation subject to slight change due largely te~ aquatic growth. Rating curve fairly well defined. Shifting-channel methods based upon results of actual discharge measurements used during periods indicated in footnote under table of daily discharge. Gage read to hua- dredths once daily from April ft to July 2, after which date two readings ». week were obtained. Daily discharge determined by applying daily, gage height to rating table. Records fair. COOPERATION. Services of observer paid by Birch Creek Irrigation Co. Discharge measurements of Birch Creek near Reno, Idaho, during the period Apr. t to Sept. SO, 1921 "» ; : Gage Dis Gage Dis Date Made by height charge Date Made by ^ height charge Feet Sec-ft. Feet Sec-ft. 2.02 87.4 May 31 2.03 86.7 29 1.97 84.9 July 18 1.91 73.4 May 19 2.00 90.1 .....do ...... 1.97 82.5 Daily discharge, in second-fed, of Birch Creek near Reno, Idaho, for the period Apr. 1 to Sept. SO, 1981 ' Day Apr. May June July Aug. Sept. Monthly discharge of Birch Creek near Reno, Idaho, for the period Apr. 1 to Sept. 80, 1921 Discharge hi second-feet Month Run-off in acre -feet Maximum Minimum Mean April .. . . .,...... -.-.. .;...... - .... 93 74 86.6 5, 150 95 84 91.0 5,600 fane ____ ...... ______. ___ ;. _ .'...... 83 68 ' 77.3 4,600 S3 68 74.7 4,500 83 78 81.5 5,010 September. __ ..;. _ *L ______85 74 79.4 4,720 The period .... _ ...... _ ..'...... _ .... _ . £9,700 LITTLE LOST RIVER AT RAYMOND RANCH, NEAR EOWE, IDAHO LOCATION. In sec. 29, T. 10 N., R. 27 E., 100 feet above wagon bridge at Raymond ranch, l^J miles above Wet Creek and 32 miles northwest of Howe, Butte County. DRAINAGE AEEA. Not measured. RECORDS AVAILABLE. April 13 to September 30, 1921. From August 28, 1910, to October 3, 1913, records were collected at station designated as "Little Lost River near Glyde, Idaho,"1 'about 2% miles upstream in sec. 18, T. 10 N., R. 27 E. GAGE. Vertical staff on left bank; read by Mrs. Nelle Raymond. DISCHARGE MEASUREMENTS. Made from wagon bridge below gage or by wad ing. CHANNEL AND CONTROL. Bed composed of gravel and sand; subject to change at high stages. Control fairly well defined at low stages but affected by backwater from bridge and channel obstruction below at high stages. Banks are overflowed during extreme high water. EXTREMES OF DISCHARGE. Maximum stage recorded during period April 13 to September 30, 3.73 feet June 5 (discharge, 159 second-feet). Some time between June 7 and 29 when gage was not read, the stage, according to water marks on gage, rose to 4.33 feet (discharge, not determined). Min imum stage'recorded, 0.96 foot April 25 (discharge, 20 second-feet). ICE. Stage-discharge relation not affected by ice during period of reeord. DIVERSIONS. Several small ranch diversions above and numerous diversions for irrigation below. The Blaine CSunty Investment Co. stores and diverts water from Dry Creek, a tributary which enters Little Lost River some distance above the gage, through a pipe line and open ditch over small di vide into Corral Creek, thence into Wet Creek, through which water flows into Little Lost River below station and is used for irrigation on the com pany's project about 30 miles downstream. REGULATION. None except as affected by diversions above. ACCURACY. Stage-discharge relation changed during high water. Rating curve used prior to May 16^ defined by two discharge measurements obtained at fairly low stages and drawn parallel to later curve. From May 16 to June 7, when stages were above 2.25 feet on the gage, a backwater correction curve was used. Rating curve used during remainder of year well defined between 30 and 90 second-feet. Gage read to hundredths once daily. Daily dis charge determined by applying daily gage height to rating table. Records good for discharge below 90 second-feet; others fair. Discharge 'measurements of Little Lost River at Raymond ranch, near Howe, Idaho, during the period Apr. 18 to 8ept. SO, 1921 Gage Dis Gage EMs- Date Made by height charge D'ate Made by height charge Weet Sex.-ft. Feet Sec.-ft. Apr. 13 Bryan and Suteliffe <» .. 1.85 45.5 July 18 Johnson and Sutcllffe.. 1.75 89.0 28 1.21 35.4 H. . ...*>._.,...._ .-.,- 1.70 62.0 Jane 1 3.29 155 Sept. 11 1.40 37.0 » Water master for Little Lost River. Daily discharge, in second-feet, of Little Lost Rixwr at Raymond ranch, near Howe, : - Idaho, for the period Apr. IS to Sept, SO, Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 _ ...... 36 156 126 53 32 16 ___ .... 50 144 61 44 42 2. _ ...... 44 156 119 48 33 17...... 45 150 63 44 41 3. __ .... 52 1S6 113 61 35 18 ...... 41 150 59 44 41 4...... 59 160 119 51 38 19 47 150 57 41 42 5 . 77 163 107 46 38 20 ...... 44 150 51 39 49 6...... 86 156 113 46 QQ . 21.... _ ... 39 150 51 38 48 7.. __ .... 86 150 119 46 39 22...... 42 150 51 36 46 8 ...... 111 107 42 39 23...... 44 150 51 38 44 9 ...... 101 80 46 38 24...... 21 150 57 38 42 10. 103 75 44 41 25 20 156 55 38 44 11. __ ..... 108 73 44 36 26...... 29 150 51 38 -42 12...... 113 69 4rt 35 37 ...... 32 144 49 38 42 13 ...... 46 113 67 46 35 9B 36 156 51 38 41 14 ...... 48 125 64 44 35 OQ 38 156 132 48 36 41 15 ...... 45 131 61 44 35 30 27 156 132 48 35 42 31 156 49 32 NOTE. Discharge interpolated June 4. No record June 8-28. Monthly discharge of Little Lost River at Raymond ranch, near Howe, Idaho, for the period Apr. IS to Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum- Minimum Mean April . _ 50 20 38.6 1,380 156 36 121 7,440 July...... ,. , . 126 48 73.0 4,490 August ... ____ . __ . ______: ...... 61 32 42.7 2,630 September _ __ . __ . ______49 32 39.8 3,370 NOTE. See footnote to table of daily discharge. LITTLE LOST RIVER NEAR HOWE, IDAHO LOCATION. In SE. ^ sec. 11, T. 6 N., R. 28 E., a quarter of a mile above diversion dam of Blaine County Investment Co., 7 miles from Berenice and 8 miles northwest of Howe, Butte County. DRAINAGE AREA. Not measured. EECORDS AVAILABLE. April 27 to September 30, 1921. GAGE. Vertical staff on left bank; read by R. L. Sutcliffe. DISCHARGE MEASUREMENTS. Made by wading below gage. CHANNEL AND CONTROL. Bed composed of cobbles and gravel; subject to cut ting by swift velocity. No well-defined control. One channel at all stages. Banks fairly high. 14234 25 8 SURFACE WAim;SUPFLY, 31921, PART XII B OF DISCHARGE. -Maximum staige1 recorded during period April 27 $$ September 30, 1.57 feet June 18, 22, and 23. (discharge, 153 second-feet); minimum stage, 0.78 foot September 2 (discharge, 55 second-feet). ICE. None during period of record. DIVERSIONS. Numerous irrigation diversions ab&ve and below station. REGULATION. Water is stored in small reservoir of Blaine County Investment Co. on Dry Creek, about 40 miles upstream. Daring irrigation season : water is released and carried through Cbrral and Wet creeks to Little- Lost River and diverted into the company's main canal one-quarter mile below ACCURACY. Stage-discharge relation permanent. Rating curve well defined. Gage read to hundredths once daily. Daily discharge determined by apply ing daily gage height to rating table. Records good except possibly during September, when gage was read only at infrequent intervals. COOPERATION. Gage-height record furnished by water master for Little Lost River. Discharge measurements of Little Lost River near Howe, Idaho, during the period Apr. IS to Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by ... height charge Feet Sec.-lt. Ftet Sec.Jt. Apr. 13 »1.67 99.2 July 14, 1.17 105 27 .95 71.5 Sept. 12 .85 61. S June 1 Paulsen and Meinzer . 1.42 134 . Measurement referred to old gage located about 600 feet below new gage; has no relation to new gage. ' 6 Water master for Little Lost River. Daily discharge, in second-feet, of Little Lost River near Howe, Idaho, for the period . . . - . Apr. 13 to Sept. SO, 1921 Day -Apr, May June July Aug. Sept. Day Apr. May June July Aug. Sept. !i..__. _ . 74 132 146 98 56 16...... 112 153 105 86 78 a--:...... 74 132 146 98 65 17 ...... 118 153 98 86 82 3 __ ._.._;. 86 136 146 OS 56 18 __ - _ - 125 153 98 86 86 4 _____ , 92 139 146 98 58 19.-..-.... 125 153 98 86 - 8586 C __ ...... 92 139 146 92 59 20 __ .....'. 125 153 98 86 "97i -R6 6...... 98 139 146 92 60 ;#..:...,_'.. 125 153 85 7 ... .r 98 139 125 92 61 22 __ ...... 12* 153 92 "778ft 84 8. _ .... 86 139 112 8(3 62 23 __ ...... 125 153 92 M 9 __ ...... 105 139. 112 86 24 ..._.._... 125 146 92 68 83 10...... 98 139 112 86 65 25 __ - .... 123 13fl 92 65 83 11 ...... 102 139 112 86 66 26 __ . .... 120 146 92 62 "8282 12. 105 146 105 86 62 27 ____ .. 74 118 150 92 60 13 __ ...... 99 98 146 105 86 66 28 __ - ..... 70 132 153 92 58 81 14 __ ...... 106 146 98 86 70 29 , 72 132 148 92 58 81 15...... 105 150 105 QA 74 30. _ ...... 75 J32 139 57 59 80 31. - 132 -92 58 NOTE. Gage not read Apr. 29, May 1, 11, 25, 26, 30,, June 3, 5, 15, 20,27, July 2-4, 21, 23,25,26,28, Aug. 6, 9-14,17,19, 21, 23, 25, 27, 29, 31, Sept. 1,3-10,13-17, and 19-30; discharge interpolated. No record Apr. 14-26- Monthly discharge of .Little Lost River near Hewe, Idaho,'for the\ period Sept. 30, l&8t ,: Discharge in ae.cpad*feet .,-, > .V-rf-j Montlj Runoff in acre-feet Maximum; Minimuni ]^!ean April 27-30... .. _-. - _ ...... '.- 75 70 : .72.8. 578 132 74' no . .. .- ...6,708 153 132 145 8,630 14S 57 '108 . 6..W9 98 58 81.4 5,010 86 55 72.5. 4,310 31,900 . WET CREEK AT CLYDE SCHOOL, NEAR HO WE, IDAHO . LOCATION. About sec. 4, T. 9 N., R. 27 E., Ouster County, 100 feet above -wagon bridge on main highway up Little Lost River valley, a quarter of~a mile west of Clyde schoolbouse, three-eighths mile above confluence 'with Little Lost River, and 30 miles northwest of Howe, Butte County. DRAINAGE *REA. Not measured. RECORDS AVAILABLE. April 13 to September 30,1921. : GAGE. Vertical staff on left bank; read R. L. Sutcliffe. DISCHARGE MEASUREMENTS. Made by wading. - CHANNEL AND CONTROL. Bed composed of gravel; shifting. No well-defined control. Banks high; one channel at all stages'. EXTREMES OF DISCHARGE. Data insufficient to determine extremes of stage and discharge. ICE. No records. DIVERSIONS. A few ranches divert water-for irrigation above gage. REGULATION. Water released during irrigation season by Blaine County Invest ment Co. from its Dry Creek reservoir passes this station en route to point of diversion from Little Lost River for lands located-about 25-miles below. ACCURACY. Stage-discharge relation not permanent. Rating curve fairly well defined below 75 second-feet. Parallel curve used September 11-30. Shift ing-control method used May 19 to June 15 and September 1-10. Results of actual discharge measurement used April 13. Grage read to hundredths at irregular intervals. Daily discharge for days gage readings are available, determined by applying daily gage height to rating table. Records fair. COOPERATION. Gage-height record furnished by water master for Little Lost River. , ' Discharge measurements of Wet Creek at Clyde school, near Howe, Idaho, during the period 4pr. IS to Sept. SO, _ Qage D!s. Oage Dis Date Made by height cbffge Date Made by height charge Feet Sec,-ft. Feet 8ec,'ft. Apr. 13 1. 41 21.4 July 30 1.46 ©.7 - $8 .71 U.O Allir 1 .....do.., -...- -i- 3.00 67.3 June l Paulseo and M^injter .. 1.41 Si, 5 Sept. 11 Johnson and Sutcliffe-. .97 23.4 Joly 13 Johnson and SirtclOTe-- 1.49 «8.» o Water master for tbe little Lost River. 6 Employee of the Idaho Department of Reclamation. 102 SURFACE WATER SUPPLY, 1921, PABT XII B Daily discharge, in second-feet, of Wet Crtek at Clyde school, near Howe, Idaho, for the period Apr. IS to Sept. SO, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 _ .. 52 72 64 29 16-. .... 49 86 68 60 24 2 _____ 52 68 64 on 17...... 56 fist an 24 3 ...... U 53 65 64 27 18 ...... 51 | 60 68 60 24 4 __ ...... KA 62 M. 07 10 KA 36 68 r eyj 5 _ __ 52 55 60 64 20...... 49 56 68 6 __ ...... 55 56 62 26 21 ...... 47 77 68 45 7 __ . __ . 56 56 61 26 22...... _ . 1 17 45 55 68 8 _____ 67 62 60 26 23...... 44 34 68 19 __ ...... 40 78 68 60 25 24...... 49 33 68 33 24 10 __ ...... on 68 fin 25 25 ...... 54 68 31 11 __ ...... 90 68 60 24 26. . __ . 59 1" 68 31 12 __ ...... 33 92 68 60 24 27...... 63 66 30 13 __ ...... 21 38 as 68 60 24 28 14 61 65 30 14 ...... 40 92 68 60 24 29...... 16 59 72 64 30 15 __ ...... \« 42 89 68 60 24 30...... 19 57 72 52 30 24 31 .... 54 64 29 NOTE. Braced figures show estimated mean discharge for periods indicated. Gage not read, Apr. 29, May 14, 16, 19-22, 24-26, 28-31, June 2-6, 8, 9, 12, 14, 15, 20, 22, 30, July 3, 4, 8, 10, 17, 19-21, 23, 24, 27, 28, Aug, 1-^3,6,7,9,10,12-14.17,26-28, Sept. 1, 4-9,12-15, and 17; discharge interpolated. Monthly discharge of Wet Creek at Clyde school, near Howe, Idaho, for the period Apr. IS to Sept. SO, 1921 .i/iscna l-Kei Run-off in acre-feet Maximum Minimum Mean April 13-30...... ______...... __ . ____ ...... 17.1 613 May...... 63 4«.2 2,840 95 33 65.1 3,870 July...... 72 52 65.7 4,040 50.7 3,130 29 24.9 1,480 The period ______16,000 BIG LOST RIVER AT HOWELL RANCH, NEAR CHILLY, IDAHO LOCATION. In sec, 30, T. 8 N., R. 21 E., at Hovrell ranch, 12 miles southwest of Chilly, Custer County, and 30 miles northwest of Mackay, nearest railroad point. This station was formerly described as "Big Lost River near Chilly." DRAINAGE AREA. Not .measured. RECORDS AVAILABLE. April 25, 1904, to August 31, 1906; July 1, 1907, to No vember 14, 1914; May 11, 1920, to September 30, 1921. GAGE. Friez water-stage recorder installed June 17, 1920, on left bank and re ferred to outside vertical staff used May ,11 to June 16, 1920; inspected by Mrs. John Howell. A vertical staff at same site but at a datum 2.07 feet higher was used June 7, 1912, to November 14, 1914. Prior to June 7, 1912, a vertical staff on left bank 100 feet below present gage and at a different datum was used. DISCHARGE MEASUREMENTS. Made from cable 50 feet above gage or by wad ing. Prior to April, 1921, cable was about one-quarter of a mile below gage. CHANNEL AND CONTROL. Bed composed of sand, gravel, and cobbles. Channel straight. Banks covered with brush and subject to overflow at high stages. Control composed of gravel and cobbles; likely to shift at high stages. TffiBUTAEY BASICS 103 EXTREMES OF DISCHARGE.' Maximum stagd during year frca& water^stage *e-. corder, 5.94 feet 4 to 8 a: m. June 12 (discharge, 3,500 second-feet); minimum stage, 2.70 feet December 23 (measured discharge, 61 second-feet). A lower stage and discharge may have occurred during perfod of no record. 19(04-1921 (not including period of no record; see "Records available"): Maximum stage recorded that of June 12, 1921; minimum stage, 1.9 feet April 2, 1909 (discharge, 35 second-feet). ICE. Stage-discharge relation seriously affected by ice. DIVERSIONS. Several small 'diversions above. Prior to relocation of cable the"1 discharge 6f Hamjnerly ditch, with a capacity of about 2& second-feet, which diverted 100 yards above former cable location, was added to measured discharges at cable to obtain total flow past gage. REGULATION. None. AccuRAsry. Stage-discharge relation not permanent. Rating curve, which is well defined between 74 and 3,100 second-feet, and several curves parallel thereto were used. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph. Because of uncertainty regarding time of change of stage-discharge relation after middle of July,-daily records for this period may be somewhat in error, Monthly records good. COOPERATION. Water commissioner for Big Lost River furnished results of discharge measurements made by him. Discharge measurements of Big Lost River at Howell ranch, near Chilly, Idaho, during the year ending Sept. 80, 1921 Gage Dis Gage Dis Pate Made by height charge Date Made by- height charge Feet Sec.-ft. Feet Sec-ft. Oct. 14 1.54 135 5.40 2,930 NOV. 12 ..do . ______1.64 697.1 July 4 2.99 730 .....do. ..___..... 2.70 661.0 11 3.04 79» Mar. 26 Crwdall aM Sloanc _ 1.23 670.4 25 2.50 ,417 Apr. 9 L. L. Bryan... _____ 1.22 78.5 Aug. 25 1.95 *m 19 Lynn Crandall ____ 1.64 164 1.91 155 ..do.. ... __ .. 2.54 494 Water commissioner for Big Lost River. * Stage-discharge relation slightly affected by ice. c Employees of Utah Construction Go. IM SURFACE WATEB SUPPLY, PART XII B Dttily '<$£ '«, in second-feet^, -of. Big Lost River at Ho wellranch, near Chilly^ . Idaho, for the year ending Sept. SO, 1921 / " ?" ''; ,'.' '' '"'* '. "Day" - ' " '" Oct. Apri May ; June July Aug; Sept. i'.:_.l_j..i.;. -. - .;. - - 108 204 1,450 1,240 359 150 2_ .- 106 301 1,490 1.060 308 148 3.., .. -...- . 106 335 1,580 ? 874 ' 324 150 4 -.,- --. ... .- ..- ...... 106 408 1,900 751 297 1fif> 5._,:.Tr^ . r 108 85 538 2,140 744 283 1 *A 6.:^-*--- - ' _____ - _ - 114 522 2,,430 793 269 14ft 7. _ . 124 589 2,580 844 259 146 8~.LU-0.U- i .,. . .t- .. _ .... 126 572 2,880 859 9iO 143 124 77 533 2,8.30 859 243 146 10 -- -.. . .. 150 108 600 2,880 836 26^ -IRA 11...... - 152 128 672 3,290 793 236 lift 12 ?.. __ 146 162 744 3,340 73* 23fl 135 13^ TT ,-- ,. ,- 146 139 814 3,080 730 221 132 i4...::I:,...... '...... 137 139 976 2,830 218 130 18 UL. *-!.. - :,-... _ , _ - 135 150 1,190 , 2,430 666 216 130 116 150 1, 288 1,850- fl*}Q 221 130 17 _ _ ... __ 12fi 139 ,1,240 1,49Q 5-72 204 130 is...:...., _ _ _ ..... 126 182 984 1.280 560 196 130 pi...^.,,..., .,.-., ..., .- -, 130 - 162" 8«1 J»450. ., m 130 20 __ .... ___ . .. ______. 124 150 322 1,190 533 183 IQfl 21 ..:. . Braced figures show estimated mean discharge for periods indicated. Shifting-control methods used July 27 to Aug. 19, Sept. 12-30. Gage not read Aug. 20-24 and Sqpt. 9; discharge interpolated. No record Nov. 1 to Apr. 1. Monthly discharge of Big Lost River at HoweU ranch, near Chilly, Idaho, for the year ending Sept. SO, Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 152 119 7,320 188 77 132 . 7,860 1,800 204 918 56, 400 3,340 1,150 1,990 118,000 July ...... -..-.-...... - .. 1,240 312 628 38,600 339 155 217 13, 300 152 126 136 8,090 NOTE. For period June 8-14 it is estimated an additional 2,300 acre-feet flowed around gage through old channel on right bank. BIG LOST RIVER BELOW CHILLY CANAL, NEAR CHILLY, IDAHO LOCATION. In sec. 1, T. 8 N., R. 21 E., 600 feet below heading of Chilly canal, a quarter of a mile below Naef and Davidson canals, and 3 miles southwest of Chilly, Custer County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 1 to September 30, 1921. GAGE. Friez water-stage recorder on right bank just below butte on left bank; inspected by Ed Mulligan and Lynn Crandall. UMeSMSS DISCHARGE MEASUBBMENTS; Made by wading o*> from eable 106 feet betow ®»ig^-\ CHANNEL AND CONTROL. Bed composed df saa *fld grfcsreL Right ba« to overflow and stream may flow ia two channels at high stagey-: formed by weil*defined gravel riffle 150 feet below gage; Stage of zero flow determined September 5, J921, as *i gdtge height p.Qfj foot ±0.06 foot. EXTREMES OP DISCHARGE. Maximum stage recorded during period April 1 to September 30, 5.02 feet June 12 (discharge, 3,210 seconcHeet); minimum, .stage, 0.41 foot September 11 (discharge, |0"^eeond-feet^. ICE .-'-No record. DIVERSIONS. Chilly canal, capacity of which, is about 00 second-steel* diverts. from left banlr, 600 feet above. TheNaef^and Davidsqn, difce&es $vfrt about 15 and 45 second-feet, respectively, from right bank a quarter of a mile above gage. Numerous other diversions above. REGULATION. None except"that due to diversions. ACCURACY; Stage-discharge relation permanent. Rating oufye is wel d#ftne.dj between 10 and 2,800 second-feet. Daily discharge ascertained by applying to rating tabte *iSwaafi daily gage height obtained by inspection of-recorder grapk Kes0*4*#>g<5rpd. . ' CoaPEEATioN. Gage-height record and most of discharge measurements fur nished by water commissioner for Big Lost Rive? : of $i Lqat River bdow CMlly canal, new ChiUy, Idaho, e year ending Sept. 30, Qaae Dis- Gage DiS- Date Wfade by- heiSit charge Date Made by height charge feet Sec.^ft. Feet 8«c.-ft. Oct. 14 0.6§ J«Jy 15 LOS 43ft AK- i* .94 93 7 Aug. 1 1.19 14S May 28 3.46 1,480 26 -...do...... 46 21.5 4.65 2,780 Sept. 5 .44 21.0 July 3 Berkeley Johnson ,,..'. 2,37 679 <» Associated with office of water commissioner for Big Lost River. Daily discharge, in second-feet, of Big Lost River below Chilly canal, near Chilly, , jdaho, for the period Apr. 1 to Sept. 80, Day Apr. May June July Sept. Day Apr1. May June .Sept. 119 i,aio 1,080 148 916 1,780 46 186 1,310 895 140 1,010953' 1,350 46 234 1,350 877 153 1,060 46 £78 1,520 556 146 , 803 95$ 48 419 1,800 528 I3S 991 49 2,060 130 48 453 2,280 128 97 40 414 2,450 380 116 114 568. 45 9. 354 2,630 621 105- 94 665 46 10. 2,820 586 42 953 11. 419 3,310 580 44 84 1,188 13. SO 448. 594 35 83 1,440 13. 511 31 89 IjSSB 14. 30'31 90 1,610 ,1,310 15. 105 1,480 1,350' r-»»^wir '" "" " ; T "' " " ' > 106 SURFACE WATEB SUPPLY, 1981, PART XII B MotftKly discharge*of Big Lost River below Chilly canal, near Chilly, Idaho1 for the : period Apr. 1 to Sept. SO, 1921 Discharge in secend-feet Month '" . .' --' Run-ofl in ' acre-feet Maximum Minimum Mean April. ___ ...... -^...... :J..fc>.-.-.2i...-. .:... <* 114 ;74.A 4,430 May . __ _ ,.. .. 1,610 119 725 44,600 June _ . .. ______. ______'.i' ..... 3,210 953 1,800 167,000 July...... 1,080 128 421 25,900 153 22 SS.6 Si 000 40 19 35.5 fctiO The period _ .. _____ ... ___ .. __ .. 188, 000 ; * BIG LOST RIVER BELOW CHILLY SINKS, NEAR CHtLLY, IDAHO LOCATION. In sec. 30, T. 8 N., R. 23 E., at State highway bridge just below Chilly Sinks, 6 miles above Maekay dam, and 8 miles southeast of Chilly, Glister County. Gage is 4 miles below Thousand Spring* Slough and at a point where ground water, presumably from Chilly Sinks or "dry beds," commences to rise. > > ' :.- - DRAINAGE AREA. Not measured. n RECORDS AVAILABLE. May 1 to September 30, 1921. GAGE. Vertical staff on left bank 25 feet above highway bridge; read by Ed Mulligan. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Bed composed of sand and gravel. Control formed by w'eH-defined gravel riffle 150 feet below gage; subject to change at high stages. EXTREMES OF DISCHARGE. Maximum stage recorded during period May 1 to September 30, 4.57 feet June 12 (discharge, 2,330 second-feet); minimum stage, 0.36 foot May 6 (discharge, 3.5 second-feet). A lower stage and dis charge may have occurred during period of no record. ICE. No record. DIVERSIONS. Numerous irrigation ditches divert above station. REGULATION. None. ACCURACY. Stage-discharge relation changed during high water of June 12. Two well-defined rating curves used, one applicable May 4 to June 12, the- other applicable June 24 to September 27. Gage read to hundredths at in frequent intervals except during May and June when more frequent read ings were obtained. Daily discharge ascertained by applying gage height to lating table or for days of no record by estimation or interpolation as noted in footnote to table of daily discharge. Records prior to July 15, t fair; thereafter, good. COOPEKATI^. Gage-height record aod results of several discharge measure ments furnished by water commissioner for Big Lost River. Big Lost River divides 6 miles above, forming another channel which is locally knowngas ('back channel" of Big Lost River and parallels the main channel oii,;the*iout^west until their waters converge in Mackay reservoir. Water flows in; secondary channel during period when Stage in Big Lost River is sufficiently high to cross the sinks. These sinks, a part of which are dry usually from first part of August until about middle of May,, extend froma point about 7 miles above to within 2 miles of gage. To determine total discharge of Big Lost River at this point, flow at this station should be combined with that passing gage on back channel of Big Lost River (station about 1 mile distant). . TEIBXJTABY BAS1KS during the period Apr. 21 to Sept. 30, 1921 Gage Dis Dis Date Made by heigh 1 charge Date Made by iiWgttt charge Feet Sec.-ft. Feet SK.-fi. Apr. 21 Lynn Crandall °. _ 0.38 63.5 July 15 &>& 389 May 12 ....-do...... __ ...... 1.23 153 28 --,_.do ...... 2.03 161 28 Day May June July Aug. Sept. Day May June July Aug. Sept. , 1... ___ .. 1,090 930 140 56 606 1,720 356 80 43 2...... 1 4.0 1,090 819 136 54 &-!!!:::::: 47«-< 1,4»0 331 W 42 3...... 1,120 708 133 53 18 . 734 1,270 306 .. '7577 41'4? 4...... 4.0 1,160 130 52 19... ___ . .... 638 1,050 279 6 ______3.8 1,296 - 126.' 51 20 _ i.-.. __ i 674 d, 040 266 73 41 640 6.... _ 3.5 1,420 122 60 21...... _ .. 643 i.aie 253 71 41 7.-- ~ 4.0 1,630 114 50 22..^_^,.!..v- \ 1.2ZO. 240 69 46 8..,-. . 4.0 1,770 1 484 49 23,... | 500 1,300 227 67 40 9_ ._ 4.0 1,910 544 I «4 48 24.fc.. _ - .... 1,330 ,-,yUf.- 65 39 10 50 2,050 515 1 " , ' 47 25, __ .. __ 702 201 63 39 11 ___ . __ . 100 2,190 485 90 46 26...,.^... 830 188 62 38 12...... __ . 153 2,330 456 88 46 27 __ . _ . .... 962 1,290 175 61 38 13.. ______2,220 431 86 46 28-^..^.^...j 1,090 . - , 162 60 H^.... ._ - 2,100 406 84 44 29-, .-,- 1,160 156 59 "*&-u 16... _ . _ .. 1,910 381 82 43 30 ___ ...... 1,160 1,170 149 58 } 31 ...... 1,060 142 87 NOTE, Braced figures show estimated mean discharge for periods indicated., Shifting-control methods used June 13-23. River flowed across Chilly dry beds above, May 10 to Aug. 7. Gage not read May' 6, 8,17, June 3, July 2, 10,11, 13, 14,16,17, 20-27, 2^-31, Aug. 2-5,12-16, 18-24,26-31, ISept. 2, 4, 6, 7, 9-14, and 16-26; discharge interpolated. Monthly discharge of Big Lost River below CMMy Sinks, near Chilly, Idaho, for the period May 1 to Sept. SO, Discharge ia second-feet Run-off in Month acre-feet Maximum Minimum Mean May...... _ .._...... 1,160 3.5 441 27,100 June. _ ...... __ . _ . ______...... 2,330 1,010 1,460 86,900 July ...... 930 142 386 23,700 140< 57 . 86.7 5,330 56, 44.4 2,640 The period _ . __ ..... _ ..... _ ...... 146,000 NOTE. See footnote to table of daily discharge. ios SURFACE WATEB S0PPUr,'19£l', PAKT XII B BIO LOST RIVER (BACK CHAHHEL) BELOW CHILLY SINKS, NEAR CHILLY.IJJAHO LOCATION. In sec. 24, T. 8 N., R. 22 E., at State highway bridge 7 miles above Mackay dam, 7 miles southeast of Chilly, Ouster County, and 11, miles northwest of Mackay. ' DKAINAGE AREA. Not measured. RECORDS AVAILABLE. May I to October 31, 1921, when station was discon tinued. ' GAGE. Vertical staff fastened to- tree on right bank, installed June 9, 10 feet above hig&way bridge. Batfum of gage raised 2 feet July 12, 1921; read ings subie^uent to June 9 corrected to new datum. Original gage which was washed out June 7, 1921, was a vertical staff installed May 12, 1921, at same location but at different datum. Gage read by Ed Mulligan. DISCHARGE MEASUREMENTS. Made from highway bridge or by wad|ng. CHANNEL AND CONTROL. Bed composed of sand and gravel. Control formed" by gravel riffle located a short distance below; subject to change at high stages. Point of zero flow at gage height 0.80 foot ±0.05 foot as determined September 5, 1921. EXTREMES OF DISCHARGE. Maximum stage recorded May 1 to October 31, 4.10 feet June 13 (discharge, 383 seeoncj-feet); channel reported dry May 1-11. ICE. No record. DIVERSIONS. A number of ranch diversions for irrigation above. REGULATION. None. ACCURACY. Stage-discharge relation not permanent. Two rating cur-ves used/ one applicable May 12 to June 7 is fairly well defined between 2 and 130 aeeond-feet, the other applicable June 9 to October 31 is well defined to 310 second-feet. Gage read to hundredths about once a week except during May and June, when more frequent readings were obtained. Daily discharge ascer tained by applying gage heights to ?»ting table except for periods indicated in footnote to daily-discharge table. Records fair chiefly because of frag mentary gage-height record. COOPERATION. Gage-height record and results of numerous discharge measure ments furnished by water commissioner for Big Lost River. Big Ijpst River divides 5 miles abjove Ration, forming this channel, which is lo cally kj}own as " back channel ' of Big Lost River, and parallels the main channel until tfteir waters converge in Mackay rpservoir. During high stages or when water flows across Chilly Sinks or dry beds water flows in this channel above gage. The greater part of thesfe dry beds, which extend from a point about 6 miles above to within a short distance of the gage, is dry usually from first part of August until about middle of May. To determine total discharge of Big Lost River at this point flow at this station should be combined with that passing gage on main channel of Big Lost River below Chilly Sinks (see p. 107). Discharge measurements of Big Lost River (ftacfe channel) below Chilly -Sinks, near Chilly, Idaho, during the period May 1% to Oct. 31, 1921 t Gage Dis, Gage Dis- Date Made by height charge Date Made by ' height charge Feet See>-Jt. Ftet Sec.-/t. May 12 1.10 » 4.0 July 3 Berkeley JonnsoO ,,. 2.J97 40.1 28 .....do ...... 1.98 U2.(S 15 Lynn CrandalJ , ,r l.» 29. L June 2 -...do ...... 2.19 lH 28 ... -do... , ., '.... fc.tfe. 9 do . 3.79 299 Set>t. 5 Berkeley Johnson .. il 23 .....do....-...... 2.99 128 Set. 17 L.J* if o Water commissioner for Big Lost River. * Discharge estimated. ..' 1MKEBUTARY f BASINS.* '-ft H' .1, BQ9 Dotty discharge, m sec'on&feet; of Big Lost near Chilly, Idaho, for the'periwl May 1 to Oct. 81, 1921 ,., 4 , r-U^4 Day May' Jiina July Adg; sepfc* -Oct. Day . May June Jttly Augi S»p*j Oct. 3.'4 1 . _ ..:.., * 128 87 11 it; 8 16; _ Li. _ . ' 71, ; 216 20 6,6 41 2...... 116 '4054. '- 11 ' 474,8 17 :., ,... ' '-9i92 y,-.i3nt i«- 23 6.4 4.0 2.A 3...... 1 ^5 11 3.4 IS...... 20 6.2 4.0 2.Q 4. _ ....'_. - - 10 4.6 Id ' 91 ; «4 17 6,1 3.9 > 2.6 5. _ ...... 132 10 4.5 afc:;::: 87, *4 14 6.0 3.8 2.7 30 6...... 191. 10 44 21....^,,... /"»; . 84 14 . Itft 3.7 2,& I...... 218 §.5 4.4 22 : ...:- ..- 99 iO 5.8 Discharge in seoond-feet Kun-off in Month acre-feet Maximum Minimum Mean 383 * 0 55.2 .- ; 3.39Q June.- - - - ' 80 180 10, 700 July...... ;.....^.:...... 97 $.9 1 2fi. 6 1,570 August ., _____ ,... ______. _ ..,. 11 4.9 7.26 44$ 4.8 4.01 239 petober.. ...-...... j..^ .^:_ ...... 3.01 \& > 16,100? NOTE. See footnote to table pf daily discharge- 110 SURFACE WATER, SUPPLY, 1921, PART XII B BIG LOST RIVER (EAST CHANNEL) ABOVE MACKAY RESERVOIR, NEAR MACKAT IDAHO LOCATION. In sec. 32, T. 8 N., R. 23 E., 3 miles above Mackay dam, above flow line of reservoir, and 7^4 miles above Mackay, Ouster County. DRAINAGE ABE A. Not measured. RECORDS AVAILABLE. May 9, 1919, to September 30, 1921. GAGE. Stevens eight-day water-stage recorder on right bank, referred to out side vertical staff; inspected by employees of Utah Construction Co. Oa April 20, 1920, gage datum raised 1 foot. DISCHARGE MEASUREMENTS. Made by wading or from suspension footbridge 20 feet below, gage.. CHANNEL AND CONTROL. Bed composed of gravel; shifts ^occasionally; one channel at low and medium stages; right bank overflowed at high stages. Controlfairly ;well defined. ' ; EXTREMES OF DISCHARGE. Maximum stage recorded during year, 3.58 feet June! 11 (discharge, 472 second-feet); overflow in second channel on June 11 estimated at about 300 second-feet additional. A higher stage and greater discharge occurred during period of no record, June 12-14. Minimum stage, -0.27 foot April 5 (discharge, 2.0 second-feet). 1919-1921: Maximum stage recorded that of June, 1921. Stream reported dry April 27 to May 16, 1920. ICE. Stage-discharge relation affected by iee. DIVERSIONS. None between gage and reservoir. Several canals divert near Chilly above "dry beds" which extend from a point a few miles above gage to a point about 15 miles above gage. REGULATION.- None. ACCURACT. Stage-discharge relation not permanent; affected by iee December 13 to March 3. Three well-defined rating curves used. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph or for days of considerable fluctuation, by averaging the discharge for hourly or other equal periods. Records good. COOPERATION. Gage-height record furnished by Utah Construction Co. Nu merous discharge measurements furnished by water commissioner for Big Lost River « Discharge measurements of Big Lost River (east channel) above Mackay reservoir, near Mackay, Idaho, during the year ending Sept. SO, 1921 Gage Dis Dls- Date Made by height charge Date Made by height chargfr Feet Sec.-fl. Feet Sec.-ft. Oct 7 0.05 16.2 Apr. 28 -0.25 2.4 -.01 12.1 2.32 c286 Dec. 12 ..... do...... 10 68.9 June 17 3.08 <7386 15 .....do...... 05 »7.8 July 1 2.90 «370 Jan. 14 -.12 &6.1 10 2.21 /271 Mar. 4 -.17 28 1.11 86.5 29 __ do ______-.22 4.0 Aug. 16 .66 38.1 Apr. 10 L. L. Bryan.-.-...... -.24 3.0 Sept 6 .42 23.2 "Associated with office of water commissioner for* Big Lost River. 6 Stage-discharge relation affected by ice. c Measured 89.1 second-feet additional flowing around gage. d Measured 198 second-feet additional flowing around gage. « Measured 283 second-feet additional flowing around gage. / Measured 42 second-feet additional flowing around gage. Ill Daily discharge, in second-feet, of Big Lost River (east channel) above Maekefy res ervoir, near Mackay, Idaho, for the year ending Sept. SO, 1921 Day Oct. NcrJ Dec. Jan. Feb. M». Ap?. May June July Aug. Sept. 1.. ______17 13 »8 3.3 2.6 366 974. 71 25 2. _ 17 12 16 t 48 3.3 2.3 358 351 69 24 3...... 17 12 10 » 3.3 2.6 36S 3*0 69 24 4...... 17 12 10 5.4 2.6 2.6 377 302 66 25 5.. __ . __ 16 12 10 6.2 10 2.6 396 281 62 24 '6... _____ .. 16 12 9 5.8 2.3 3.0 411 ' 274 59 23 7...... 16 12 9 5.4 2.6 d.O 426 267 -.-' 67 23 8 ...... 17 12 9 6.5 5.5 4.7 2.6 2.6 441 54. 32 g.. ___ . .... 17 12 9 4.7 2.6 2.3 456 267 60 21 10...... 17 12 9 4.7 3.0 12 456 287 48 22 llvl ___ ;. _ 17 12 fr 4,7 3.0 45 4T2 267 48 28 12. __ _ ._ 17 .12-' 9 5.1 3.0 80 266 43 22 13...... 16 12 5.1 3.0 97 i 5CKX 248 4* 21 14. _____ . .... 16 12 o> U 5.1 4.0 126 233 31 21 15. __ ...... 15 11 7.8 5.1 4.0 185 464 220 41 21 1«._-.. ,.....__ 15 11 5.1 4.3. 441 212 4> 21 17...... 15 11 4.7 4.3 281 396 205 4ff 20 18...... 15 12 4.7 4.0 268 374 189 37 20 19...... _ ..... 15 12 4.7 4.0 274 358 173 35 20 20...... 15 12 O» V 4.3 4.0 253 358 154 84 20 145' 21. __ .. . 15 12 4.3 4.0 239 358 32 20 22.... _ .. ... 15 12 5.0 4.3 3.6 228 381 133 '90 20 23...... , 15 11 4.0 3.3 211 396 122 30 18 24. ____ .. ... 15 11 6.0 4.0 3.8 215 404 120 30 18 25. _____ . .... 14 11 4.3 3.0 253 411 118 28 16 26...... 14 11 4.3 3.0 see 404 108 28 :'W 27...... 14 11 7.0 3.8 3.0 344 388 95 ,27 17 28...... 14 10 3.3 2.6 374. 381 86 27 17 29. __ ...... 14 10 3.6 3.0 396 361 79 26 17 30. _ ..... _ .. 14 10 3.6 3.0 388 381 73 26 17 31...... 14 3.6 374t 69 26 NOTE. Braced figures show estimated mean discharge for periods indicated. Stage-discharge relation affected by ice Dec. 13, 14, Dec. 1 Discharge la second-feet ' Run-off Month in- acre-feet Maximum i Minijflum, ;:i Mean 17 14 15.5 953 1310 ; ' 10 ' "8.2511.6 41' ':.'.. V.B.34 384 5.27 293 March ______. 6,2 3.3 4.61 283 April ...... 4.3 2.0 3.23 192 May 396 2.3 : 168 10,300 June ______...... 358 410 24,400 Julv...... __ ... _ _ ..... _ .. 374 69 202 12,400 August ______...... 71 26 42.4 2,610 25 17 20.7 1,230 75.01"" The year ______. ___. ___ . _____ .. 2.0 54,200 NOTE. Additional flow in overflow channel is estimated as follows: May, 3,450 acre-ieej; J,un$ X3,300 acre-feet; July, 1,790 acre-feet. 112 SURFACE WAX3R /S]CJ?¥3t1f? '.'ISM? PART XII B BWJ LOST RIVER (WEST CHAJOT^L) ABQV^ RESERVOIR,' NJEAR' '... , MAOiKAY, LOCATION; In sec. 5, T. 7 N., R. 23 E., 3 miles above Maekay dam, above flow line -of reservoir, and 7^4 miles above Mackay, Caster County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 9, 1919, to September 30, 1921. ... GAGE.' Stevens 8-day water-stage recorder on left bank, referred to outside staff gage; inspected by employees' of Utah Construction Co. Prior to- May 4> 1920, gage was located directly opposite present site on right bank. On May 4, 1920, gage, was raised 1 foot. , ; DISCHARGE ^EAsti'REMENTS. Made r by wading or from suspension footbridge juat above gage. CHANNEL ANO CONTROL.- Bed composed chiefly of gravel. Channel winding; banks stibject to Overflow at extremely high stages. Qpntrol of g-ravel, fairly well defined; shifting, . . ; EXTREMES OP DISCHARGE. Maximum stage recorded 'during year, 3. 23 feet June 17 (discharge, 531 second-feet). A stage estimated at 4.45 feet, from high- water mark bn gage, occurred during period of no record June 5-16 (estimated i discharge, 1,200 second-feet ). Minimum stage, 0.50 foot March 28 to April 12 (discharge, 23 second-feet). ; 1919-1921: Maximum stage recorded that 'of June, 1921; minimum dis charge 18-.3 second-feet, actual discharge measurement on May 1, 1920. ICE. Stage-discharge relation not affected by ice.! ^DIVERSIONS. None between station and reservoir; Several canals divert above the "dry beds " which extend from a point a few miles above station to a point about 15 miles above, near Chilly. No surface flow passes the "dry beds " except during fairly high stages. REGULATION. None. ACCURACY. Stage-discharge relation not permanent. Rating curve used March 28 to June 4, fairly well defined between 35 and 525 second-feet; curve used June 17 to September 30, well defined between 35 and 525 second-feet; parallel curve used January 14 to March 11. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection.. of recorder graph or by shifting-control methods as noted in footnote to daily-discharge table. Records good except for -estimated periods for which they are fair; COOPERATION. Gage-height record furnished by Utah Construction Co. Sev eral discharge Hieasurements furnished by water commissioner for Big Lost River. " """" ~ -----. - - -.--_,..... -..- , _,_ . . Discharge measurement of Big Lost River (west channelj above Mackay reservoir near Mackay, Idaho, during the year.ending.Sept." SO, 1921 ."".". Dis Dis Date Made by . Gage Date Made by Gage height charge height charge '.'.'Feet Sec.'ft, Sec.-ft. Oct. 7 Lynn Crandallo _ -,\-.~. 0.74 37.2 Apr. 28 0.51 20.3 Nov. 5 ..... do ______.68 - 34.7- May- 17- - 1.78 182 Dec. 15 . .do,., ...... 57 28.5 June 17 .....do ...... 3.22 523 Jan. 14 L. L. Bryan ____ . .52 28.4 July 'l 2.50 318 Mar. 4 Lyim Crandall _ .51 25.4 28 1.18 7£.8 29 .... .do _ ___ ...... 50 21.7 Aug. 16 ... -do ...... 96 JS2.5 Apr. 10 L. L. Bryan ______.50 23.1 Sept. 6 Berkeley Johnson ...... 88 45.4 Associated with office of water commissioner for Big Lost River. 113 Daily discharge, iri8eb$nd~J0et:,'of lBig LoM Ri»6/r^j#&f;-ck4nn4l>) above Mackay res ervoir, near Mackay, Idaho, for the year ending Sept. 30, 1921 Dec. Jan. Feb. Mar. Apr. May June Aug. ...:,,. ^ ,,. j. Oc|. Nov% July ' Sept rf 4J ' dk 1 'a1 24' "iv e.:::::':J.« 31 29 26 ' 26 380 312 46 2...... & 36 31 29 26 26 23 < - 24- 318 277,, - i -n. 46 ' 46 4'-3-^.-_ ; ' _ " '" .. _l' ; l, 38 (36 31 29 26 '»'28 - , 2823 24 318 246 68 38 i ''"35' iO 29 26- I ;j4 iiJSSO 211- «r £ (5.^... . __ . _ . oo -. 35. 30, . 28, 26 27, .'+ t23, ".. /.#%1 1 ISO ,65.- 46 6 ___ ...... 38 35 30 29 26 27 23 34 180 ;. 63 46 07 1 -' ! 38'; 35 30 29 26 26 23J 24 178 60 .45 S.l'.i....-:.!.. 35 29 28 26 >2«! 28 24' 172 ; .58 45 9^.*..J __ JL^i, > v 383-fl ( as ' .- .' 28.W .28'28 26 26 .. -23 24 183, 58 45 fc.:.i..!.:: 35 26 26 23 24 183 58 46 ,,40 ., 34 29 28 ,26 26 23 27 .181 ', 56 45 ii-.r..,.t...... - :40- '26' ;'84V- 65 ia.:.-...j!.i'.-i.- 34 29 28 26 23 i»05d 171 45 13...... 41 , .34 29 28 26 26 . 24 44 1 165 55, 45 14. _ ...... _ . 40 34 28 28 26 26 24 59 151 54 45 15...... 40 33 29 28 26 26 24 83 144 54. ; 45 '"' 29 , , : :^ '33 28 - 25 125 135 S3 45 16...... 39 26 26 '531 17...... 39 33 29 28 26 26 1 178' 129 ....: ' 5455 44 18 .. _ . __ . 40 35 29 29 26 26 26 186 384 121 44 174- , 312 53 44 19--.. .,.. 40. 37 29. 28 2626 26. 25 112 52' 20...... :.... 41 38 29 28 28 24 161 290 104 44 , ', " ' 27 *4 21..... ____ .. ,40 S4 29 26 9*> 24 156 293 101 50 22.1...,.;.,... 4O , 32 29 3,7 26 m 24 '144 .." *« & ' 49 ; ;-,:44 23...... 39 32 20 27 ^26 24 24 135 397 98 49 44 24...... '..; _ : 39 32 28 27 ' S6 "24 24 141 426 89 50 4S 25... _____ 39 32 28 tyt 26 2* 24 164, '< 426 ,89 49 , 4? ; Discharge in second-feet Month , Run-ofE in acre-feet Maximum Minimum Meatt 41 36 38.9 2; WO 37 32 39.9 2,020 31 28 29.2 1,800 January... _ ...... _ ...... ______. 29 27 27.9 1,720 26 25 25,9 1,440 27 23 25.2 1,650 26 23 23.8 1,420 May . .;. . , ._ 335 24 .123 7,560 290 587 34,600 Jury.. ..-...... -. .. -...... 312 69 144 8,850 August. ... ____ . ______. . ______7fi 47 55.2 3,390 46 41 44.2 2,630 23 96.2 69,700 114 SURFACE WATER SUPPLY, 1921, PART XII B MACKAY RESERVOIR NEAR MACK AT, IDAHO LOCATION. In sec. 12, T. 7 N., R. 23 E., 4 miles northwest of Mackay, Ouster County. RECORDS AVAILABLE. January 1, 1919, to September 30, 1921. Records ob tained by Utah Construction Co. prior to January 1, 1919, but were not published by United States Geological Survey. GAGE. Vertical staff on head-gate tower near right end of dam; read by W. C. Hooper, employee of the Utah Construction Co. Datum of gage 6,000 feet above sea level. EXTREMES OF CONTENTS. Maximum stage recorded during year, 62:58 feet June 23 (contents, 39,150 acre-feet); minimum stage recorded, 7.2 feet October 13 and 14 (contents, 33 acre-feet). 1919-1921: Maximum stage recorded that of June 23, 1921; minimum stage, 6.6 feet August 24 to September 2, 1919, when water surface was below bottom of outlet tunnel. COOPBKATION. Records furnished by Utah Construction Co. through water commissioner of Big Lost River. Stored water froih this reservoir is used for irrigation of land near Arco, under the Utah Construction Co.'s Carey Act project. About 7,000 acres are under cultivation at present, but this area is subject to change from year to year. The reservoir is formed by a gravity earth dam 750 feet in length at crest. The crest is 75 feet above bottom of concrete core wall, below which there is 15 feet of sheet piling to prevent excessive seepage. Crest of spillway is 10 feet below crest of dam and 55 feet above bottom of outlet tunnel. Elevation of bottom of outlet tunnel corresponds to 7.0 feet on gage, at which stage the usable stor age is zero, although there is about 125 acre-feet of water in the reservoir, which is not available for use. Elevation of crest of spillway corresponds to 62.0 feet on gage, at which stage the capacity of the reservoir in 38,400 acre-feet, about 2,400 acres of land being submerged. As the foundation of the dam is on very porous material, and the core wall does not penetrate to bedrock, heavy seepage loss occurs, and at times during low water the inflow is not sufficient to counter act this loss plus the loss sustained by evaporation. Thus the stage of water in the reservoir occasionally falls below the bottom of the outlet tunnel. A study of the-stream-flow records at this point indicates that most of the seepage from the reservoir reappears in the river channel above the gaging station at the "Narrows" 1J^ miles downstream, where favorable rock structure forces under ground water to the surface. Additional water also reappears, part of which is probably side drainage and part evidently flows underground at the places where the surface flow into the reservoir is measured and thence through the reservoir. Seepage loss will probably diminish as silting takes place, although the amount of water thus lost has not varied appreciably in the last few years. TMBUTABY 115 Daily contents, in acrerfeet) of Mack&y reservoir near Mackay, Idaho, for/the yedf .' ' ; _ 1, --,.,.: ; ' ' ending &%ptf $Q> ' May ' Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. j'uiie July Atig:; Sept. 1-,.. 50 4,124, 10,380 14,750 17, 780 , ,19,6QQ 21,640 22,710 30,500 38,380 soa i 12, 040 ST.... 60 4, STB 10,560 14,920 17.920 ' 19, 720 41, TO 22,720 36, 516' 38;62a 346 12,000 3.... 60 4,607 : 10, 720 15,080 18,070 19,810 21,7 NOTE. Contents estimated May 6-11, owing to error in gage readings on account of"wind eflect. BIG LOST RIVER BELOW MACKAY RESERVOIR, NEAR MACK AY, IDAHO LOCATION. In sec. 18, T. 7 N., R. 24 E., 450 feet below Oleson suspension bridge half a mile above heading of Streeter ditch, 1 J/£ miles below Mackay dam, and 23^ miles above Mackay, Custer County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. December 1, 1903, to August 31, 1906; May 12,1912, to March 15, 1915; January 1, 1919, to September 30, 1921. GAGE. Friez water-stage recorder on left bank referred to vertical staff, in stalled May 4, 1920, 40 feet upstream from location of Steveng eight-day recorder used January 1, 1919, to May 3, 1920; inspected by employees of Utah Construction Co. A vertical staff gage installed January 6, 1912, at Oleson suspension bridge 450 feet above present gage, was in use until April 28, 1913. From April 29, 1913, to March 15, 1915, records were ob tained at what is commonly known as the Streeter gage, a vertical staff located 1 mile below present gage. The Streeter ditch diverts water between these two points. DISCHARGE MEASUREMENTS. Made by wading or from cable just below gage. CHANNEL AND CONTROL. Bed composed of gravel; shifts occasionally. Growth of moss at times affects stage-discharge relation. EXTREMES OF DISCHARGE, Maximum stage recorded during year, 5.79 feet June 10 (discharge, 2,090 second-feet); minimum stage, 1.08 feet October 20 (dis charge, 50 second-feet). 1903-1921 (not including period of no record, see "Records available"): Maximum stage recorded that of June 10, 1921; minimum stage recorded, 0.36 foot March 26-28,1914 (discharge, 41 second-feet). ICE. Stage-discharge relation not affected by ice. DIVERSIONS. N'umerous diversioas above Maekay reservoir, but Sharp ditch is only diversion between gage and reservoir. 116 SURFACE WAITER SUPPLY, WZL, PART XII B REGULATION. Flow past gage is, regulated by operation of> gated in Macks$ dam. Prior to 1917 regulation from- storage above was practically negligible. ACCUBACY. Stage-discharge relation shifts within fairly well defined limits*. Two well-defined rating curves and several curves parallel thereto were used^ Changes in stage-discharge relation werei ascertained by merins of numerous discharge measurements and application of rating determined accordingly. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspection of recorder graph or by shifting-control method as noted in footnote to daily discharge table. Records good. COOPERATION, Gage-height record furnished by Utah Construction Co., and several discharge measurements furnished by water commissioner for Big Lost River. Discharge measurements of Big Lost River below Mackay reservoir, near Mackay, Idaho, during the year ending Sept. SO, 1921 Dis Gage Dis Date Made by height charge Date Made by height charge Feet 8ec.-ft. Feee See.-/*. Oct. 7 Lynn Crandall" ...... 1.63 186 Reid Jennan.... __ ... 1.46 133 fiO 19 1.09 ' 71AQ May 26 2 KAO Nov. 12 1 18 4 7Q 1,880 Dec. 17 1.30 IfU 10 .....do ...... 5.88 3,060 Jan. 13 1.36 130 17 .....do __ ...... 3.37 1,100 Feb. 28 1.44 134 30 Berkeley Johnson...... 3.50 1,160 Apr 1 1 48 138 July 10 9 SQ 803 8 1 48 137 Aug. 2 2.40 499 8 1 48 139 20 .do . . ... 2.19 410 8 1 47 128 1 79 243 "Associated with office of water commissioner for Big Lost Biver. &Employee of Utah Construction Co. Daily discharge, in second-feet, of Big Lost River below Mackay reservoir, near Mackay, Idaho, for the year ending Sept. 30, 1Q®1 Day Oct. Nov. Dec, Jan. Feb. Mar. Apr. May June July Aug. Sept. 1. ____ .. ... 190 58 91 116 129 134 139 132 1,250 1,270" 524 311 2.. ______. 184 60 91 116 129 134 139 132 1,,250 1,150 - 519 221 3. ______. 184 61 91 116 129 137 139 132 1,250 932 519'619 4. ______... 184 61 91 116 129 137 139 129 1,250 798 196 6 . . , 184 63 »1 116 126 117 129 1,580 870 t.fA 212 6...... 187 ,65 91 122 129 137 139 129 1,760 870 B4X 221 7,._..___...... 187 65 94 122 129 139 129 1,800 834 650 ~8-..-. __ .... 187 66 94 122 129 13(7 139 124 2,120 810 5*5 24i Q 187 68 98 122 19Q 137 137 124 , 798 535 244 10...... 187 68 98 122 129 139 134 126 2' 990 804 519 228 11 .*.....,... 187 ; 68, 98 122 132 139 134 129 2,610 798 499'514 209 121...... 187 70 98 124 132 139 134 142 2,740 810 234 13 ______.. 187 74 Qtt 124 132 139 134 . 170 2,900 828 489 375 14...... 184 74 100 124 132 139 132 231 2,560 870 475- 375 is...... : 184 76 100 124 132 139 132 258 2,320 858' 440 346 16...... ISO 78 100 124 132 139 132 446 1,720 804 427 304 17;. ____ ..... 153 79 105 124 132 139 132 608 1,340 774 423 193 18. ____ . _ .. 79 106 124 132 139 132 619 682 768 At a 193 19- __ ... __ QQ . . 79 126 132 1QQ 624 ' fini 7 Sept. 1-8, ii-18. TRIBUTARY BASINS lit Monthly discharge of Big Lost River below Mackay reservoir; w&r Idaho, for the year ending Sept. SO, Discharge in second-feet Bun-ofl in Month N acre-feet Maximum Minimum Mean October...; __ .-...-_ ._. ______. ___ . _ . ... 190 50 130 7;990 87 68 746 4,440 116 91 102 t 6,270 129 116 124 7,620 134 129 131 7,280 139 134 138 8,480 April...... _.,.«i.._.._..._..._.._.. .______..___ 139 - 132 134 7,970 May...... -...... -....,...... ^.-. 1,250 124 431 . 26,600 June. ______' 2,990 603 1,030 97,000 July- .....-...... 1,270 535 759 46,700 650 338 446 27,*00 September ______...... 375 187 227 18,600 2,9^0 50 361 261,000 BIO LOST RIVEK AT LESLIE, IDAHO LOCATION. On line between sees. 14 and 15, T. 6 N., R, 25 E., at W. Miles's ranch, one-third mile above heading of Beck canal, 1 mile above heading of Blaine canal, and 1 mile southeast of Leslie, Custef County. DRAINAGE AREA. Not measured. . .! RECORDS AVAILABLE. May'8, 1919, to September 30, 1921. GAGE. Stevens eight-day water-stage recorder installed May 19, 1920, on left bank; inspected by water commissioner for Big, Lost River and his assis tants. Prior to May 12, 1920, a vertical staff at approximately same datum and located on left bank about 175 feet below present gage, was used. DISCHARGE MEASUREMENTS. Made by wading or from cable 125 feet below gage. CHANNEL AND CONTROL. Banks of medium height and may be overflowed at high stages. Bed composed of sand and gravel; control of same material; somewhat shifting. EXTREMES OP DISCHARGE. Maximum stage recorded dbring year, 5.4 feet June 10 (discharge, 2,5i80 second-feet); minimum stage, 1.04 feet November 2-5 (discharge, 49 second-feet). 1919-1921: Maximum stage, recorded that of Jmne 10, 1921; mmimuin. mean daily stage, 0.80 foot May 20, 1920 (discharge, 24 second-feet)^ IcE.-7-Stage-discharge relation affected by ice. .!"._".' DIVERSIONS. Numerous diversions above for irrigation, REGULATION. Flow regulated by gates at Mackay dam above/ . . " - ACCURACY. Stage-discharge relation not permanent;; slightly affected byyicfc December, January, and February. Three well-dejfined 'rating curves- used as follows: October 1-21, November 10 to June 14, Wd June 17 to Septem ber 30. Daily discharge ascertained by applying, to rating table mean, daily gage height obtained by inspection of recorder graph, or b^ shiftingrettntrol methods as noted in footnote to table of daily discharge. For daiys .qt^no record, discharge either estimated or interpolated. Records good, except for estimated periods, which are fair. COOPERATION. Gage-height record and numerous discharge measurements furnished by water commissioner for Big Lost River. 118 SURFACE WATER SUPPLY, 19&, PART XII B Discharge measurements of Big Lost River at Leslie, Idaho, during'the year ending ' Sept. SO, 19$1 Gage Dis Oage Dis D,»te Made by height charge Date Made by height charge Feet Sec.-ft. Feet Scc.-ft. Oct. 1 1.29 99.5 June 3 3.69 1,220 Nov. 10 .... .do...... - ... .. 1.07 55.2 14 Lynn Crandall __ - 5.05 .. 2,290 Pep. 16 . , da ...... 1.56 &81.9 17 4._Q8 1,680 Jan. 17 1.26 695.5 28 2.86 731 Mar. 1 1.29 104 July 25 2.29 501 30 .....Ao...... 1.31 109 Aug. 18 1.94 319 Apr,. 7 Bryanand Paulsen __ a. 30 108 Sept. 9 Berkeley Johnson ...... 1.50 104 Me& 10 Lynn Craadall ...... 1.13 69.1 27 Reid Jerman.. ..., .... 1.40 170 ; ; 10 1.12 69.7 i. if Associated with office of water commissioner for Big Lost River. * Stage-discharge relation affected oy ice. i)aily discharge, in second-feet", of Big Lost River at Leslie, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. i .:. . ... 102 ni 103 109 103 1,200 940 432 273 2 __ ...... 91 49 109 101 1,220 940 426 231 3. _ . _ ...... 65 4.Q 109 86 1,220 850 420 194 4 __ ...... 59 4Q 109 80 1,226 396 191 5. _ ...... 59 4Q 108, 80 1,300 623 399 189 59 50 108 77 1,480 663 '402 196 57 CO 108 108 75 1,750 638 405 191 8...... 55 54 75 108 75 1,990 623 408 197 9 __ ...... 57 65, 108 73 2,030 £98 404 194 io.:...... 65 56 108 69 2,500 568 404 18S 11 __ .... . 110 56 111 60 2,370 584 404 181 12«.'.v.-C.^i:-%ll 107 56 111 58 2,070 565- 442 174 13-...... ;.... 107 111 60. 2,410 60S'574 400 251 14...... 107 56 113 113 73 2,320 392 15...... 107 56 118 86 2,300 623 383 235 16. ___ .. ... 110 82 96 113 162 1,830 608 358 273 17..., ______110 B6, 118 113 1,460 684 343 214 18...... 122 108 | 430 940 665 332 202 19. ___ ...... 12f 108 440 658 660 332 191 20...... 70 106 458 623 546 329 180 21...... 61 124 103 579 542 822 180 22...... 59 60 103 570 537 318 180 23..... __ ... 59 103 500 820 305 812 180 24...... 57 85 106 479 308 183 25...... 58 118 106 jlj.njo 470 806 183 26...... 56 106 436 1,380 449 29ff 177 27.. ____ .. 54 69 106 449 1,310 449 295 1«6 28... __ ...... 54 113 106 480 820 441 292 163 *-..-,.-.-._.-.. 52 i 69 110 101 503 874 436 289 163 80.. _ ^..^,.J. 52 108 101 898 820 .428 284 163 31...... ^ 52 108 1,000 432 279 Braced figures show estimated mean discharge for periods indicated. Discharge estimated May 31, June 1, 10, 15, 16,. and Sept., 30. Shifting-control methods Oct. 22 to Nov. 5, Apr. ,1-4, June 16 and 16. Oage not read Nov. 6-9,11-16, Mar. 29, Aug. 2, 5-7, 30, Sept. 4, 5, 10, 11, 18, and 19; dis charge interpolated.' i TRIBUTARY BASI3TS, 119 Monthly discharge of Big Last Riser at Le*tie, Idaho, for the year ending SepL 3,0, 198t , , Discharge in second-feet Biuwjffin Month acre-feet Maximum Minimum Mean 127 52 76.1 4,680 49 67.4 3,429 December _ . _ ... _ ...... ______80.1 e|5.0 February , ___ . _ ..'...... ______elOO &i§60 March ______.. __ .. ____ . _____ , 'W m 6,966 April ...... __ . ___ .. _ . ___ . ______. _ 118 m 6,430 May...... ; .. .-.-. .-...... -_.. __ s& mi 18, 500 ~~m\ 570 i,w 85,700 July...... -.. -. --.- ...._...... 428 m 35,900 432 279 368 22,000 296 103 201 12,000 49 292 212,000 Estimated. BIG LOST RIVER NEAR MOORE, IDAHO LOCATION. In sec. 4, T. 5 N., R. 26 E., at Grant Walburn's ranch, 1 mile above Moore canal diversion, 4 miles north of Moore, Butte County, and 11 miles north of Arco. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. November 18, 1919, to September 30, 1921. GAGE. Vertical staff set in concrete on right bank, washed out by high water in June. Former vertical staff used prior to 1920 at practically same site and datum was used thereafter. Gage read by L. G. Walburn. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL/ Bed composed of clean gravel. Banks are low and likely to be overflowed at high stages. Channel winding. Control formed by well-defined gravel bar; shifting. EXTREMES OP DISCHARGE. Maximum discharge June 14, 1921, estimated about 2,330 second-feet determined from high-water marks on gage. Minimum stage, 0.39 foot December 17 (discharge, 19 second-feet). 1920-1921: Maximum that of June 14, 1921} minimum stage that of December 17, 1520. ICE. Stage-discharge relation practically unaffected by ice. DIVERSIONS. Numerous diversions above station. Moore canal diverts 1 mile below gage. REGULATION. Flow regulated by operation of head gates at Mackay dam and by canal diversions above station. ACCURACY. Stage-discharge relation shifts within fairly well-defined limits; not affected by ice duriag the year. Standard rating ourve, which is well de fined between 36 and 270 second-feet, and several curves parallel thereto were used. Gage read to hundredths once daily. Daily discharge ascer tained by applying daily gage height to rating table or by shifting-control method. Records good. COOPERATION. Gage-height record and several discharge measurements fur nished by water commissioner for Big Lost River. 120 StTKFACE WATER SUPPLY, 1921, PABT XII B Discharge measurements of Big Lost River near Moore, Idaho, during the year end ing Sept, SO, 1981 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet See.-/*. Oct. 2 0.62 43.6 July 9 1.94 Ml Nav, 11 Aft "*3 d 12 1 Qrt O*M Dec. 30 . .do...... 52 97 a 29 1.00 147 Jan. 17 .42 28.9 Aug. 21 .....do ...... 95 Ml Mar, 1 .80 80.9 Sept. 4 do . . .99 160 Apr. 7 .76 79.7 9 1.04 liS5, May 2 Jermanff and Crandall. .96 120 29 Held Jerman ...... 94 136 .19 1.30 202 Associated with office of water commissioner for Big Lost River. Daily discharge, in second-feet, of Big Lost River near Moore, Idaho, for the year ; ending Sept.,SO,.1921...... Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May July Aug. Sept. 1 ______.... 51 30 25 23 27 .75 79 ,122 131 131 2...... 46 - 30 28 25 27 76 79 122 126 140 3 ... __ .... _ ...... 38 30 28 29 27 75 79 126 , 164 159 ,4..... __ ...... 36 30 25 29 26 75 . 91 122 135 150 5. __ ...... 35 30 23 33 27 75 87 122 122 154 6...... __ .. __ .. 35 27 21 33 SO'29 79 79 117 131 159 7 __ ...... 33 29 22 26 71 ' 7977 122 145 164 8. ' 33 37 26 24 29 71 126 126 w 32 28 26 23 29; 76 79 126 . 242 146 164 10 __ . __ ...... 34 25 25 24 29 75 79 122 -.256 146 169 11...... __ .. ... 39 23 28 23 27 75 79 .104 281 131 ' MR159 12 .. _._ ...... 41 30 25 22 27 75 83 99 231 140 13-...... 44 28 24 22 - 29 75 91 95 231 142 108 14. ____ . ___ . __ . 44 26 23 23 32 75 104 99 242 150 1 NOTB. Shifting-control method used Oct. 3 to Nov. 10, Dee. 31 to Jan. 16, and Mar. 21-27. Discharge estimated May 30 and 31. Water commissioner for Big Lost River estimated mean daily disohaege for June 4-30,1,100 second-feet, and July 1-8,330 second-feet. Discharge interpolated Oct. l^Nov. 15, Dec.13. 22, Aitt. 18 and 28. ;' - '.-. TMBtTTABY BASINS ;-.' Monthly discharge of "Big Lost River near 'Moore, Idaho, for Discharge in second-feet Bun-off Month in acre-feet a ... .-, Maximum Minimum Mean 52 -30 36.7 2,260 30 23 27.1 1,610 28 . Jfl 23.6 1,480 31 22 26.7, V;Mft 75. 26 36.9 104 71 82.9 AprU . .. -...... ,. .... 122 77 94.0 May. . _.* 95 . 189 -ll'«K 256 131 188 154 115 134 S'24Q 169 104 144 8,570 NOTE. See footnote to table of daily discharge. THOUSAND SPRINGS CREEK WEAR CHILLY, IDAHO - LocATidN. rln sec. 34, T. 9 N., R. 22 E., at highway bridge threerquarters of a mile above mouth of creek, 3 miles below dam site of Thousand Springs Irri gation & Land Co., and 2% miles -southeast--of Chilly, Ouster County. Several small springs enter between station and dam, and numerous small springs enter below. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 17,1920, to September 30,1921. Records.are availr able for station 2% miles above, from December 1, 1912, to February 28,. 1013, and January 25 to September 30,1914. Except for a few small springs- which enter between, flow at both points is, about the same.. GAGE, Vertical staff attached to downstream end of left abutment of highway bridge; read by Ed. Mulligan. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEI^ AND CONTROL. Bed composed of sand and fine gravel. One channel at all stages. . Stage-discharge relation affected by moss and aquatic growth.- EXTREMES OF DISCHARGE. Data insufficient to warrant determination of maxi mum and minimum discharges. ICE. No record. DiVERSIONS. Some diversions for irrigation above; amount diverted not known. REGULATION. None. ACCURACY. Stage-discharge relation not permanent; affected by growth of moss. Two weU-defined rating curves used or shifting-control method between dis charge measurements. Gage read to hundredths at infrequent intervals. Daily discharge on days of gage-height observations determined by actual measurements or by applying daily gage height to rating table. For days of no record discharge is estimated. Monthly summary fair. COOPERATION. Results of several discharge measurements furnished by water commissioner for Big Lost River. 122 SURFACE WATER SUPPLY, 1984, PART XII B Discharge measurements of ThQU99K&Sprmg$ Cr«ek neqrGkitty, Ida&a, dutrmtf the year ending &ept. SO, 1921 Dfe-v Dis Gage Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Get. 14 0.80 13.8 July 3 1.30 78.9 Nov. 12 __ .do ______.69 65.2 11 . .do...... _ 1.21 63.4 Mar. 26 .....do . .. .76 15.1 Aug. 1 1.25 50.7 .53 12.5 . 26 1.15 39,6 .88 37.6 Sept. 5 1.10 35*0 a Water commissioner for Big Lost River. 6 Stage-discharge relatioa slightly affected by ice. Daily discharge, in second-feet, of Thousand Springs Creek, near Chilly, Idaho, for the year ending Sept. 30,1921 Day Oct. Nov. Mar. Apr. May June July Aug. Sept. 1 ...... i.... _ . 32 50 2... _ . ___ ... _ ...... >» } » 1 K 3-^...... _ ...... 9.4 i 36 79 4.*....-.....- ...... 5... _ ... _ ...... 13 39 1 35 9.6 6.. _____ . ____ ...... 70 48 7...... QQJL 8 ___ . __ . ____ . __ } 1 9.-...... 13 10 38 10- __ . ------.... 46 Oi 11 . __ ... _ .....:...... 43 64 19 5 9 13 ...... 14 . .. 14 i 13 46 15 .. _ ...... -*. 48 1 «I2 27 14 16 ____ ...... 17 ... _ . ....-.-,..... __ 47 18 _ .'...... | 53 60 45 19 _ ...... __ 17 20. _ . ....-.-- .-... 57 21 _ ...... __ ...... _ 25 22 ___ ...... ___ .. 15 I, 42 23 ... . * 20 24...... \ 18 20 25 ..,.- ; 18 65 26 ..... _ ...... -.- .- 15 I 55 40 27 ...... 22 28 __ ... ..T...... 23 29 ___ . -. . [ 53 aa \ JJ*> 30 ...... 1" . 31 . - --.. NOTE'. Braced figures stopw estimated mean discharge for periods indicated based upon information furnished by water commissioner for Big Lost River. No record on days for which discharge is not given. Monthly discharge of Thousand Springs Creek near Chilly, Idaho, for the period Mar. 23 to Sept. 80, 1921 Discharge in aeeond-feet Run-off in Month aera-feet Maximum Minimum Mean March 23-31...... 15.7 280 April...... 13.2 786 15.5 953 50.0 2,980 July...... 62.7 3,860 August... ______44.2 2,720 28.2 1,680 13,300 NOTE. See footnote to table of daily discharge. TRIBUTARY BASINS 123 WARM SPRING CREEK (BAST CHANNEL) NEAR MACKAY, IDAHO LOCATION. In NE. ^ sec. 5, T. 7 N., R. 23 E., 500 feet above junction with west channel of Warm Spring Creek, 3J^ miles above Mackay dam and 7^ miles northwest of Mackay, Custer County. DRAINAGE ABBA. Not measured. RECORDS AVAILABLE. May 1, 1919, to September 30, 1921. - '.'.'.. GAGE. ' Vertical staff on right bank; read by employees of the Utah Construc tion Co. Prior to May 3, 1920, a vertical staff at about same datum and located on right bank 100 feet above present gage was used...... DISCHARGE IWEASUREMENTS. Made by wading or from suspension bridge 125 feet above gage. CHANNEL AND CONTKOL! Bed composed of sand and gravel. One channel at all stages. Banks steep and covered with brush. Stage-discharge relation' affected by growth of mosp. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 3.25 feet June 10 (discharge, 200 second-feet); mean discharge for period June 11-16 esti mated at 215 second-feet. Minimum stage, 1.38 feet April 28 (discharge, 14 second-feet). Actual maximum and minimum flow no doubt .occurred o.n days of no record. 1919-1921: Maximum stage recorded that of June 10, 1921; minimum discharge, 9 second-feet May 8, 9, 13, 14, 1919, and May 18-21, 1920. ICE. Stage-discharge relation not affected by ice. DIVERSIONS. Natural flow practically all diverted during irrigation season. Flow during summer represents return flow from irrigation above. Entire flow stored in Mackay reservoir. REGULATION. None. ACCURACY. Stage-discharge relation not permanent; affected by growth of moss and brush along banks. Gage read to hundredths once a week except during irrigation season when more frequent readings were obtained. Upon basis of frequent discharge measurements shifting-control methdd was used throughout the year. For days of no record discharge estimated or interpolated by comparison with record at station on west channel of Warm Spring Creek. Records fair, chiefly on account of numerous breaks in record and because of constantly changing channel conditions. COOPERATION. Gage-height record furnished by Utah Construction Co. Several discharge measurements furnished by water commissioner for Big Lost River. Discharge measurements of Warm Spring Creek (east channel) near Mackay, Idaho, during the year ending Sept. 30, 19%1 Gage Dis Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Oct. 7 1.57 17.5 Apr. 28 Jerman»and Crandall. 1.38 11.6 Nov. 5 1.58 21.7 May 17 2.06 70.0 Deo. 15 - &0 ...... 1.54 20.7 June 17 ..... do..... ____ ... 2.69 142 Jan. 14 1.50 19.8 July 1 2.18 87.6 Mar. 4 1.48 17.6 28 1.60 24.2 29 1.43 16.9 Aug. 16 1.59 21.0 Apr. 10 1.38 14.8 1.61 22.6 Associated with office of water commissioner for Big Lost River. 14234 25 9 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of'Warm Spring Creek (east chccn'h.d) near Mackay Y Idaho, for the year ending Sept. 30, 1921 : ,: . j!,.-.-' -. ' '. Day Oct. Nov. Dec. Jan. Feb. Mar. Apr, May June July Aug. Sept. " 87 ' 25 l ______20 22 20 19 17 17 16 16 120 20 2 ______20 22 20 19 17 < 18 16 15 iir ' ' 72 26 21 3. 20 22 20 ' 19 ' 17 18 16 15 119 J65 ,, 23 , 21 4 __ .... __ .. 19 22 20 18 16 15 Ti1? 57 26 21 8 - 19 2.2 20 19 ; 16 22 16 15 50 9fi 91 6 ______.. 18 23. 19 1» 16 22 . 16 15 " 48 23 23 7..,....r.r,J^.- 18, , 23 , *9 19 16 22 16 15 iSr .48 23 2S ; ; , , ; 1 1Q T E * *) * 8 1ft 22 to 17 20 16 46 no 9...... 19 22 19 19 17 20 16 15 47 23 23 10 19 , 22 20 19 17 20 14 18 200 23 23- A' ''-I'.; 47 ll..- .» n 20 21 20 19 18 22 15 20 48 23 23 i2 . .. 20 21 20 19 18 22 15 24 46 23 23 13 ...... 20 21 20 19 18 22 15 28 43 23, 01 14.. __ .. _ .. 21 22 20 19 17 22 16 32 215 42 23 23. 151 L 21 22 20 19 17 22 16 36 38 23 23 1.6...... 21 23 20 19 17 22 17 61 38 21 23 17.. . _ ...... 21 23 19 19 17 22 17 70 142 37 ' > 22.: 23 18 ...... 22 24 19 19 17 23 16 ,70 97 . 37, 24 23 19-. _ ... 22 24 19 19 17 20 16 67 87 34 25 23- 20 _____ . _ .. 23 23 19 19 17 18 16 63 77 31 23 23 2i_ :_ __ .. 23 23 20 19 17 18 16 62 82 32 23 23 22 _____ . _ .. 23 22 20 18 17 18 16 ' 6057 103 30 22 23 23 ____ ...... 23' 22 20 18 17 18 16 29 22 22 24 ______.. 23 21 20 18 17 18 16 56 29 22 22 25 22 21 20 18 17 18 15 65 28 22 oo < j 26 ______.. 22 21 20 18 17 17 15 73 108 27 22 22 27 ______... 22 21 20 18 17 17 15 85 27 22 22 28 _____ . _ . 22 21 20 19 17 17 14 101- . 24 21 22 29- ______.. 22 21 20 19 17 14 115 24 20 QIV 30. ______. 23 20 20 18 17 15 119 106 24 21 >-22 Q1 23 20 18 17 125 25 20 ^ Shifting-control methods used throughout year. Braced figures show estimated mean dis charge for periods indicated. Gage not read Oct. 1, 3-5, 8-10,12-15,17-19, 21, 22, 24-26,28-30; Nov. 1-4, 7-12, 14-18, 20, 21, 23-26, Nov. 28 to Dec. 3, Dec. 5-7, 9, 10, 12-14, 16-18, 19-25, Dec. 27.to Jan.j-1, Jan. 3-7, 9-13, 15-24, 26-28, Jan. 30 to Feb. 6, Feb. 8-11, 13-18, 20-25, Feb. 27 to Mar.3, Mar. 5-11, 13-16,18,19, 21-27,; Mar. 29 to Apr. 1, Apr. 3-8,11-15, 17-22, 24-27, 29, May 1-7,9, 10, 12, 13, 15,,22, 29, June ly 19, July 3, 4, 9,10,16,17, 23, 24, 31, Aug. 1, 7, $12, 14, 21, 28, Sept. 2-5, 7, 8, 10-15, 17-22, and 24-29; discharge interpolated. ' Monthly discharge of Warm Spring Creek (east channel) near Mackay, Idaho, for the year ending Sept. 30, 1921'.,' ' Discharge in second-feet Run-off in Month acre-feet Maximum MinimuBS Mean 23 18 20.9 1,290> 24 20 22.0 l,3la 20 19 . 19. 7 1,210 January T -L. _ ___ _ 19 18 ; 18.7 1, 150 ' ' 18 16 17.0 944 23 17 19.5 1,200 17 14 15.6 928. 125 15 49.7 3,060 June.... _____ ..' __>T _, __ . __ _' _ t ___ . _ .... 77 145 : 8,630 87 24 40.6 2,500 26- 20 22.8 l,40a 23 20, 22,4 i 1,330 The year...-. ___ v '-- ______14 34.4 25,000 TEIBTJTAEY BASINS WARM SPRING CREEK (WEST CHANNEL) NEAR MACKAY, IDAHO LOCATION. In NE. *4 sec. 5, T. 7 N., R. 23 E., 500 feet above junction with east channel of Warm Spring Creek, 3^ miles above Mackay dam, above flow line of reservoir, and 7J^ miles above Mackay, Ouster County. DBAINAGE ABEA. Not measured. RECORDS AVAILABLE. May 8, 1919, to September 30, 1921. GAGE. Stevens 8-day water-stage recorder on right bank; inspected by em ployees of Utah Construction Co. On May 4, 1920, datum of gage was raised 1 foot. DISCHABGE MEASUBEMENTS. Made by wading or from suspension footbridge just below gage. CHANNEL AND CONTBOL. Bed composed chiefly of gravel. One channel at all stages. Control formed by well-defined gravel riffle; fairly permanent. EXTBEMES OP DISCHABGE. Maximum mean stage recorded during year, 3.38 feet June 12 (discharge, 411 second-feet); minimum stage, 0.87 foot May 3 and 9 (discharge, 84 second-feet). 1919-1921: Maximum mean stage recorded that of June 12, 1921; mini mum mean stage, 0.76 foot May 20, 1920 (discharge, 65 second-feet). ICE. Stage-discharge relation slightly affected by ice. DIVEBSIONS. Practically entire flow diverted during irrigation season. Flow during summer represents return flow from irrigation above. Entire flow stored in Mackay reservoir. REGULATION. None. ACCURACY. Stage-discharge relation affected by growth of moss; affected by ice November 17-21 and January 18. Two well-defined rating curves and a parallel curve used based on discharge measurements made during the year. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph or by shifting-control method as noted in footnote to daily-discharge table. Records good. COOPERATION. Gage-height record furnished by Utah Construction Co. and several discharge measurements furnished by water commissioner for Big Lost River. Discharge measurements of Warm Spring Creek (west channel) near Mackay, Idaho,, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by- height charge Feet Sec.-ft. Feet Sec.-ft. Oct. 9 0.96 86.5 Apr. 28 0.88 84.4 Nov. 5 .....do...... 1.02 OS 7 TVfoTT I? 1.66 IRA ..... do...... 61.05 96.7 2.42 9fid Jan. 14 .99 95.7 July 1 1.84 199 Mar, 4 .97 88.2 28 1.11 106 29 .92 87.4 Aug. 16 1.06 103: Apr. 10 .87 85.5 Sept. 6 1.17 114 a Associated with office of water commissioner for Big Lost River. & Gage height believed to be in error. 126 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Warm Spring Creek (west channel) near Mackay, Idaho, for the year ending Sept. 80,1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May. June July Aug Sept. 1 ___ .... _ . 90 100 98 98 93 88 88 85 242 202 109 104 2 _____ .... 88 100 98 98 93 88 87 85 242 181 109 102 3 ____ - _ . 87 100 98 98 93 RQ 86 ad 242 163 1AQ 104 4 ____ ... __ 87 100 98 no 93 89 87 85 270 150 111 inft 5 ______87 99 97 98 93 94 87 86 291 143 ino 111 6...... 87 100 97 98 93 94 86 86 306 139 108 116 T...... 86 100 97 98 93 92 86 86 328 137 107 116 8. . _ ...... 86 99 97 98 91 90 86 85 351 137 105 116 86 100 97 07 91 90 86, QA 366 142 106 117 10 88 99 07 Oft 90 91 85 R7 374 106 119 11 ____ ...... 90 99 98 96 90 94 86 90 381 141 102 119 12.... _ ... _ . 93 99 98 96 90 94 86 95 411 138 104 13.. __ 96 99 98 96 90' 94 88 99 404 136 104 119 14 96 100 97 96 90 92 95 102 388 132 104 121 15 94 100 98 95 90 90 89 102 366 129 105 121 16 _ ...... 96 100 97 95 90 94 88 125 344 126 104 121 17...... 97 97 95 90 108 91 158 270 123 105 121 18 ____ ...... 98 97 95 90 100 90 164 207 123 108 121 19 102 98 96 90 90 89 158 171 121 109 125 20 __ ...... 100 100 99 95 89 89 89 154 165 120 107 124 21. __ ..... _ . 101 99 95 89 88 88 155 169 119 106 123 22 _ ...... _ . 103 100 99 95 88 89 88 148 199 119 105 121 23 _ .. .. 102 100 99 95 88 90 87 149 235 117 106 120 24 ___ ...... 102 100 100 95 87 90 86 137 256 117 107 110 25 103 99 99 95 87 90 86 144 256 116 107 119 26...... 103 99 98 95 87 89 86 168 115 108 119 27...... 103 99 98 94 87 88 85 191 112 108 118 28 . 103 98 98 94 87 88 85 210 1 215 110 107 118 29 . 103 98 98 94 87 85 235 I 109 107 118 30. 103 98 98 93 87 85 242 228 109 107 118 31- _ . _ 102 98 93 87 242 110 107 NOTE. Braced figures show estimated mean discharge for periods indicated. Stage-discharge relation affected by ice Nov. 17-21 and Jan, 18. Shifting-control method used Oct. 13-30, Jan. 15 to Apr. 9, May 10-16, and June 22-30. Gage not read Oct. 9,10, May 22, and July 14; discharge interpolated. Monthly discharge 'of Warm Springs Creek (west channel) near Mackay, Idaho, for the year ending Sept. 80, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean* 103 86 95.5 5,870 99.5 5,920 100 97 97.9 6,020 98 93 95.8 5,890 February.... __ . _ , .. ______...... 93 87 90.1, 5,000 108 87 91.1 5,600 95 85 87.2 5,190 242 84 133 8,180 411 165 277 16,500 July ... . 202 109 132 8,120 111 102 107 6,580 125 102 117 6,960 The year ______411 84 ' 118 85,800 TRIBUTARY BASINS 127 DITCH NEAR MACKAY, IDAHO LOCATION. In sec. 12, T. 7 N., R. 23 E., 250 feet below head of ditch, half a mile below Mackay reservoir, and 3J^ miles northwest of Mackay, Ouster County. RECORDS AVAILABLE. June 6, 1912, to October 24, 1914, and March 24, 1919, to September 30,1921. GAGE. Vertical staff on right bank installed April 20, 1920; read during irriga tion season by water master or employees of Utah Construction Co. From March 24, 1919, to April 20, 1920, a temporary vertical staff on left bank 100 feet above present gage was used. Gage used June 6, 1912, to June 25, 1913, was a staff on flume 40 feet below head gates, and gage used June 26 to October 24, 1914, was vertical staff at the same site as present gage. Relation between present and former gages not determined. DISCHARGE MEASUREMENTS. Made from footbridge or by wading. CHANNEL AND CONTROL. Control composed of gravel and sand and is poorly denned. Stage-discharge relation affected at times by moss and weeds in channel. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 2.50 feet June 23 (discharge, 42 second-feet); canal reported dry during winter and on other days during season when water was shut off. 1912-1921 (not including period of no record; see "Records available"): Maximum discharge recorded that of June 23, 1921; ditch reported dry during winter and on other days when water is shut off. ICE. None. Winter flow presumably derived from leakage through head gates,. DIVERSIONS. Station is above all points of diversion. REGULATION. Flow controlled by head gate and by a small wasteway above gage. ACCURACY. Stage-discharge relation affected by growth of moss and weeds. Standard rating curve, which is well denned between 5 and 40 second-feet and several curves parallel thereto were used. Gage read to hundredths once daily May 10 to August 24 and at irregular intervals during remain der of year. Daily discharge .ascertained by applying daily gage height to rating table or by shifting-control method during periods of change in rating as noted in footnote to daily-discharge table. Daily discharge esti mated and interpolated for periods of no record (see footnote to table of daily discharge). Records good. COOPERATION. Gage-height record and numerous discharge measurements fur nished by water commissioner for Big Lost River. Sharp ditch diverts from east side of Big Lost River sec. 12, T. 7 N., R. 23 E., 1 mile above heading of Streeter ditch and half a mile below Mackay res ervoir. The water is used for irrigation on land northwest of Mackay and above Streeter ditch. Discharge measurements of Sharp ditch near Mackay, Idaho, during the year ending Sept. 80, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Oct. 7 1.75 td. Q 2.43 39.8 Jan. 13 (») July 15 2.06 26.2 Apr. 8 do. (6) do 2.14 21.4 13 1.10 6.88 23 do 2.10 19.1 1.78 24.0 1.91 15.5 June 16 2.00 27.6 "Associated with office of water commissioner for Big Lost River. 6 No flow. 128 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Sharp ditch near Mackay, Idaho, for the year ending Sept. 80, 1921 Day Oct. Nov. Apr. May June July Aug. Sept. , 1. ______. __ . 15 1.8 27 39 22 17 2 ______... ___ . ______k _ 15 1.9 2.3 I 5.0 26 39 22 16 3 ______. __ . ____ . ____ 15 1.9 4.5 26 39 22 16 4...., ______.... 16 1.9 4.0 26 38 22 16 fi ______. ______...... 17 5.0 26 29 22 15 6...... 18 1.9 6.0 26 27 22 15 7...... 15 6.0 25 29 24 15 8... _ ...... ___ ...... 15 11 25 28 21 15 9 ______.. ______...... 15 1.0 19 22 .-28 22 15 10...... 8.0 9.8 22 28 24 15 11 ___ . __ ...... 3 12 22 28 23 14 12...... [ 4.1 5.0 24 22 28 23 14 13...... 6.8 25 19 28 '2323 14 14 6.8 25 19 27 14 15 -- .-..-..__-._..--...-...._.._. 6.8 24 19 26 20 14 .2 16...... 9.4 6.S 25 27 27 18 14 17...... 6.8 26 24 27 20 14 18 _ ..... __ . __ ...... 8.0 26 24 26 20 14 19 . - .- 5.6 1.0 10 26 24 30 20 13 20...... 2.4 3.0 10 26 26 ; 23 19 13 21..... _ .. ___ .... _ ...... 2.5 10 26 24 24 17 13 22 2.6 10 26 27 25 17 13 23 __ ...... _ ..... _ ...... 2.6 10 25 33 25 18 13 24 ___ ... ___ .. _____ ...... 2.8 10 26 27 25 19 13 25 ___ ...... _ . _____ ...... 3.0 10 26 30 24 19 13 26...... _____ ..... ___ .... _ ... 2 4 8.3 26 33 24 18 13 27.. ___ . ______'______. .... 1.7 26 39 24 18 13 18 13 28 ___ ... ______...... 1.7 6. 0 26 39 23 29...... ___ ... __ ...... 1.7 27 39 23 17 14 30.. .. _____ ...... 1.8 26 40 23 17 14 31 -._.. -.. .-. _ 1.8 26 23 17 NOTE. Braced figures show estimated mean discharge for periods indicated. Shifting-control method used May 10,11; May 20 to June 15, July 1-14, July 16 to Aug. 7, Aug. 12-22, Aug. 27 to Sept. 4. Ditch reported dry Nov. 21 to Apr. 1 and Apr. 4-11. Discharge interpolated or estimated, Oct. 3-5, 8, 9, 21, 24, 26, Oct. 28 to Nov. 3, Nov. 9, Apr. 2, 3, 14,16-22, 24, 25, May 4, 6, 7, 9, Aug. 4, 5, 25-29, 31, Sept. 3-5, 7-15, 127-20, 22, 23, 2S-27, and 29. Monthly discharge of Sharp ditch near Mackay, Idaho, for the year ending Sept. 80, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 18 1.7 7.77 478 0 .740 44 - 10 0 5.20 309 27 19.4 1,190 40 19 26.9 1.600 July... ..,-. ..- .. ._ .__...- . - 39 23 27.6 1,700 24 17 20.2 1,240 September.. _ _ __ ...... 17 13 14.2 845 40 0 10.2 7,410 NOTE. See footnote to table of daily discharge. TRIBUTARY CEDA^CR^BK BELOW POWER P&ANT, NEA& JM4CKAY, IDAHO , .. v LOCATION. In sec. 2, T. 7 N., E. 24 E., 75 feet below power house of Mackay Light $ Power Co., immediately below -diversion dam of Qlark ditch, and 4 miles northeast of Mackay, Ouster County. DBAINAGE ABBA, Not measured. R.ECOBDS AVAILABLE. May 1, 1920, to September 30, 1921. Records from October 2Qji-1911,-to March 31,1913, are available for station 500 feet below the forks and 1 mile above present station. GAGE. Vertical staff on left bank 10 feet below diversion dam of Clark ditch. Bead by power plant attendant. Gage lowered 0.81 foot On July 30, 1921. Gage readings ;not corrected. DISCHABGE MEASUBEMENTS. Made by wading. CHANNEL AND CONTKOL. Bed composed of sand, gravel, and rock; fairly per manent. Control of same material and is at times affected by debris. One channel at all stages. EXTBEMES OP DISCHABGE. Maximum stage recorded during period April 1 to September 30, 2.8feet at 7 p. m. June 7, (discharge, 297 second-feet); mini mum stage, 0.30 foot at 7 a. m. April 10 (discharge, 1.7 second-feet). , A lower discharge may have occurred during period of no record. 1920-1921: Maximum stage recorded that of June 7,1921; minimum stage 0.18 foot May 7, 1920 (discharge, 0.5 second-foot). ICE. No record. t DIVEBSIONS. Clark ditch diverts a short distance above gage. To determine total flow of Cedar Creek the flow in Clark ditch should be included. Mackay Light & Power Co. diverts- water for power purposes about 1 mile updtream but water is returned to stream a short distance above gage. REGULATION.; Slight diurnal fluctuation during low-water period owing to impounding of water 1 mile upstream at diversion dam for power plant. Some regulation due to diversion by Clark ditch. ACCUBACY. Stage-discharge relation not permanent. Two well-defined rating curves and several parallel curves used during period. Staff gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table. Records good except for June 7, 9, 11-15, which may be somewhat in error. CoopEBATibkl Gage-height record and a number of discharge measurements furnished by water commissioner lor Big Lost River. Discharge measurements of Cedar Creek below power plant, near Mackay, Idaho1, during the year ending Sept. 80, 1921 Gage Dis Gage Dis* Date Made by height charge Date , Made by height chargQ Feet Sec.-ft. Feel Sec.rft. Oct. 7 0.41 4.4 ; 1.88 6150 Nov. 8 -deu,;..... _ . , .43 4.2 29- Serkfeley Johnsoa... .70 6100 10 63.1 July 30 .61 13.8 Apr. 2 Jerman " and Orandall. .44 5.3 Aug. 13 .40 4.0 11 .42 »3.8 .40 3.5 May 6 Paulsen and Crandall. .68 13.0 ° Associated With offixjevof water commissioner for Big Lost Biver; ; 6 Measurement made above Clark ditch diversion. Flow in latter subtracted from total flow obtained. 130 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Cedar Creek below power plant near Mackay, Idaho, for the period Apr. 1 to Sept. SO, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June Wfy Aug. Sept. I...... 3.9 3.9 32 80 11 3.6 16...... 3.9 36 80 43 4.0 3.6 2 ...... 4.5 6.9 26 69 U 3.6 17...... 3.1 36 63 -.43 4.0 3.6 3-. .... 5.6 7.5 38 38 13 3.6 18. 3.1 27 63 43 4.0 3.6 4...... 3.3 10 88 30 13 3.6 19 3.3 20 43 43 4.0 3.6 5...... 2.8 12 115 35 13 3.6 20 3.3 20 43 41 4.0, 3.6 6...... 3.0 13 161 54 8.2 q ft 21 _ ...... 3.3 20 40 38 4.0 3.6 7...... 3.0 14 281 55 8.2 3.6 22...... 3.9 10 fllfl 32 3.8 3.6 8...... 2 7 10 137 fid 8.2 3.6 23 3.3 6.2 106 , on 8.8 3.6 9...... 3.0 9.5 217 61 6.1 3.6 24 ...... 3.3 27 112 W 3. 8 3.6 10 2.5 9.5 161 55 6.1 3.6 25 3.3 78 112 - fa 3.8 3.6 11. . 3.9 9.5 53 4.8 3.6 26...... 3.3 108 112 24 3.8 3.6 12 3.3 9.5 47 4.0 3.6 27 3.0 108 74 22 3.8 3.6 13...... 3.3 20 145 47 4.0 28 3 ft 44 77 20 3.8 3.6 14...... 3.6 32 45 4.0 29 3.3 36 99 16 3.8 3.6 15 3.3 46 45 4.0 3.6 30. 3.3 36 89 13 3.8 3.6 31 36 12 3,8 NOTE. Because of unreliable gage-height record, discharge June 11-15 was estimated from informa tion furnished by water commissioner for Big Lost River. Gage not read July 24-29; discharge inter polated. No record Oct. 1 to Mar. 31. Monthly discharge of Cedar Creek below power plant, near Mackay, Idaho, for the period Apr. 1 to Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean J ______April ...... _....,. _ 5.6 2.5 3.41 ' ' 203 May ...... __ ...... -...... _.-...... 108 3.9 27.8 1,710 281 26 107 6,370 July...... 80 12 40.2 2,470 13 3.8 1 5.83 358 3.6 3.6 3. 60 214 11,300 CLARK DITCH NEAR MACKAY, IDAHO LOCATION. In sec. 2, T. 7 N., R. 24 E., at point of diversion from. Cedar Creek, immediately below power house of Mackay Light & Power Co., and 4 miles northeast of Mackay, Custer County. RECORDS AVAILABLE. May 1, 1920, to September 30, 1921. GAGE. Vertical staff attached to end of head gate on left bank; read by power plant attendant. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. Canal section about 8 feet wide. Bed composed of gravel and rock. Control not permanent. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 1.4 feet June 26-29 (discharge; 23.3 second-feet); ditch reported dry May 20-22 and June 6-8. 1920-1921: Maximum stage recorded that of June 26-29,1921; channel reported dry May 11-13, 1920, and May 20-22 and June 6-8, 1921, ICE. Water usually diverted only during irrigation season; winter flow consists chiefly of leakage through gates. DIVERSIONS. Above all diversions. REGULATION. Flow regulated by head gate directly above gage. 181 ACCURACY. Stage-dischafge relation not permanent. Curves parallel to stand ard rating curve which is fairly well defined between 4 and 20 second-feet, was used during the period. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to ratijag table and using shifting-control method as noted in footnote to daily discharge table. Records fair. COOPERATION. Gage-height record and numerous discharge measurements furnished by water commissioner for Big Lost River. Clark ditch diverts water from right bank of Cedar Creek in sec. 2, T. 7 N., R. 24 E., 4 miles above Mackay. The water is used for irrigation on land northeast of Mackay. Discharge measurements of Clark ditch near Mackay, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Oct. 7 Lynn Crandall" ___ 0.73 6.1 Paulsen and CrandalL. 0.16 f>0.05 Nov. 8 do .... .76 5.1 1.00 10.6 Jan. 15 .29 b.4 29 1.33 20.7 Apr. 2 Jerman » and Crandall. .20 b.l July 30 Lynn Crahdall. __ ... 1.13 17.3 11 .18 b.2 Sept. 8 1.09 10.2 Associated with office of water commissioner for Big Lost River. 6 Estimated. Daily discharge, in second-feet, of Clark ditch near Mackay, Idaho, for the period Apr. 1 to Sept. 30, 1921 Day A r. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1_ . .. 10.4 21.6 17.4 10.4 18...... __ 2.1 19.8 18.8 16.4 8.4 2 .. 10.4 21.6 16.4 10.4 17 ...... 2.1 10.4 18.8 16.4 7.9 3 ____ .. 11.8 21.6 18.1 10.4 18 __ . .... 2.1 10.4 18.8 16.4 7.9 4 ____ .. 13.2 21.6 17.4 10.4 19 __ .. _ . 2.1 16.4 18.8 13.2 7.4 5 .. 11.8 21.6 16.4 10.4 20 ___ . .... 1.0 16.4 18.8 10.4 6.8 6 .. 0 21.6 14.8 10.4 21 __ ...... 0 16.4 18.8 10.4 6.8 7 .. 0 21.6 W o 10.4 22. _ ...... 2.4 19.8 17.4 10.4 6.1 8 ____ .. 0.2 0.2 5.8 21.6 14.8 10.2 23 __ ...... 0.2 5.6 19.8 15.8 10,4 6.1 9...... 10.4 21.6 16.4 9.9 24. _ ...... 8.9 19.8 17.8 10.4 6.1 10 ____ .. 11.8 17.1 16.4 9.9 25...... 19.8 19.8 17.8 10.4 6.1 11 ____ ... 13.2 18.8 36.4 9.9 26... 10.4 21.5 17.8 10.4 6.1 12 ___ ..... 14.8 18.8 16.4 9.9 27 . _ . 10.4 23.3 17.8 10.4 5.8 13 ____ .. 19.8 18.8 16.4 9.9 28 ...... 10.4 23.3 17.8 10.4 5.6 14 ____ 19.8 18.8 16.4 9.9 29 .... TO. 4 22.6 17.8 10.4 5.6 15 ____ 7, 1 19.8 18.8 16.4 9.4 30...... 10.4 21.6 18.8 10.4 5.6 31 10.4 18.8 10.4 NOTE. Braced figures show estimated mean discharge for periods indicated. Shifting-control method used May 22-24,, July 10,22,23, July 31 to Aug. 4. Channel reported dry May 21 and June 6-7. Monthly discharge of Clark ditch near Mackay, Idaho, for the period Apr. 1 to Sept. 30, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean April. ._ ...._ ...... o0.2 11.9 19.8 6 3.66 225 23.3 0 15.1 898 Julv .... _ .. - 21.6 16.8 19.2 1,180 18.1 10.4 13.9 : 855 10.4 ' 5.6 8.34 496 The period ___ ... ______3,870 « Estimated. 14234 2* 132 SURFACE WATEB SUPPLY, 1981, PART XII B ALDEK CREEK NEAR MACKAY, IDAHO LOCATION. In sec. 13, T. 6 N., R. 24 E., Smiles above mouth, 6 miles southwest of Leslie, and 6 miles southeast of Mackay, Custer County. DRAINAGE AREA. Not measured. , RECORDS AVAILABLE. April 29, 1920, to September 30, 1921. GAGE. Vertical staff on right bank; read by water master. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. Bed composed of sand and gravel. Banks heavily covered with brush. One channel at all stages. Control poorly defined and subject to change. EXTREMES OF DISCHARGE. Data insufficient to determine maximum .and minimum stages. ' ICE. No record. DIVERSIONS. Practically none above station. REGULATION. None. ACCURACY. Stage-discharge relation not permanent. Rating curve is fairly well defined between 2 and 90 second-feet. Gage read to hundredths at infrequent intervals. Daily discharge ascertained from discharge measure ments, by applying gage height to rating table, and by shifting-control method. Discharge estimated for days of no record. Records good for days of gage observations; monthly discharge fair. COOPERATION. Gage-height record and several discharge measurements furnished by water commissioner for Big Lost River. Discharge measurements of Alder Creek near Mackay, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge rm Sec.-fi. Feet Sec,-ft. Nov. 8 0.27 2.49 2.37 #.$ Apr. 2 .52 8 14 July 21 1.40 19.0 29 .74 13.9 Aug. 15 . 77- 11,0 May 27 Lynn Crandall _____ 3.02 76.6 Sept. 8 Berkeley Johnson .64 9.10 . .do...... 3.40 111 <* Associated with office of water commissioner for Big Lost River. Daily discharge, in second-feet, of Alder Greek near Mackay, Idaho, for the period Apr. 1 to Sept. SO, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 _____ 8.0 4Q l!8 ...... 98 28 2.. _____ 8.1 17 __ ...... 66 24 3...... 1" 18 ...... 8.0 1 w 1" 4 ______19 ...... 50 1 "" 5...... 87 40 10 20...... 12 60 9.0 6. __ ..... 21...... 10 19 7 ...... 14 22...... 12 56 14 8.... __ .. 90 34 9 1 23... __ .. 14 17 9 __ . ___ 8.0 20 9A 54 19 10 ...... 1 113 25.. ____ . 62 11 11 ...... 111 13 26 ...... _ 14 50 3.3 12... ___ . 41 28 9.0 27 77 16 13...... 43 ) 28 .. __ . 78 p. a 14.,...... 45 | 98 29 __ ...... 14 62 47 11 15...... 47 j 30 . 14 62 si } 60 12 }'< NOTE. Braced figures show estimated mean discharge for periods indicated. Results of discharge measurements used Nov. 8, Apr. 2,29, May 27, June 11,29, July 21, Aug. 15, and Sept. 8. Shifting-control method used June 5 to Sept. 26. TRIBUTARY BASINS Monthly discharge of Alder Creek near Mackay, Idaho, for the period Sept. SO, 1921 Discharge in second-feet Biinofl in Month acre-feet Maximum Minimum Mean April...... 9.80 583 . 42.2 4,350*2,590 June ______113 47 73.1 July...... 49 12 26.3 1,620 August 12.2 760 September ______- 9.22 549 The period ____ ...... _ . _ ...... 10,400 ANTELOPE CREEK NEAR DARLINGTON, IDAHO LOCATION.- About sec. 29, T. 5 N., R. 25 E., at John G. Richardson's ranch, 7 miles west of I Moore, 8 miles southwest of Darlington, Butte County, and 10 miles above mouth of creek. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 29, 1913, to September 30, 1916, and April 27, 1920, to September 30, 1921. GAGE. Vertical staff installed September 8, 1921, on left bank 150 yards above Richardson's house. Prior to this time a combined vertical and inclined staff at practically same site and datum was used; read by Mrs. J. G. Richardson. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. Bed composed of gravel. Control usually changes each year with the spring break-up. One channel at all stages, although banks may overflow in high stages. EXTREMES OF DISCHARGE. Maximum stage recorded during period, 5.00 feet May 28 (discharge, 833 second-feet); minimum stage, 1.35 feet October 4 and 5 (discharge, 18 second-feet); a lower discharge probably occurred during period of no record. 1913-1921 (not including period of no record; see "Records available"): Maximum stage recorded that of May 28, 1921; minimum stage, 1.06 feet August 4, 6, 7, and 9, 1915 (discharge, 3 second-feet). ICE. Stage-discharge relation seriously affected by ice; records discontinued during winter. DIVERSIONS. Small ranch diversions from Antelope Creek and its tributaries above gage. REGULATION. None, except as affected by diversions above. ACCURACY. Stage-discharge relation not permanent. Two well-defined rating curves and curves parallel thereto used during the period. Gage read to quarter-tenths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table or by shifting-control method as indicated in footnote to daily-discharge table. Records good. COOPERATION. Gage-height record and several discharge measurements fur nished by water commissioner for Big Lost River. SURFACE WATER SUPPLY, 1921, PART XII B Discharge measurements of Antelope Creek near Darlington, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 8 1.52 622.0 June 20 2.84 224 3.26 625.8 28 2.59 190 Mar. 28 -.do.-...... -.... 1.68 28.8 July 12 1.84 75.1 Apr. 11 2.11 83.4 21 1.52 41.7 29 2.33 112 do.. .. . 1.48 35.4 May 14 3.27 283 1.48 32.6 June 4 ..do. . _.. -. 3.96 535 28 1.46 29.2 "Associated with office of water commissioner for Big £ost Kiver. 6 Stage-discharge relation affected by ice. Daily discharge, in second-feet, of Antelope Creek near Darlington, Idaho, for the year ending Sept. SO, 1921 Day Oct. Apr. May Jane July Aug. Sept. 1... _ . _ .. ___ ... _ ... _____ . _ . 18 48 117 682 157 50 23 2. _ . _ .... ___ .. _ . _ .. ___ . _ . _ . 18 65 140 515 140 47 23 3,-...... ,. _. . 18 81 148 500 124 47 25 4...... _ ...... ____ . ______.. _ . 18 60 156 545 109 40 27 5 __ . __ ..... ___ . __ .. _ . _ . ___ .. 18 51 174 650 95 36 27 6 . ____ . _ . _ . __ . ______...... 19 56 192 666 92 33 27 7. _ . 19 54 192 682 87 34 27 8... ______.. _ . ______..... __ . 19 43 243 759 87 30 31 9.. ______...... ___ . __ --.:.- 19 56 232 759 83 33 33 10.. ___ ... ______. __ ...... 57 232 744 77 34 33 11.... __ . ______...... 76 243 774 75 30 33 12 ______.. ______. ... 86 254 806 72 30 33 13 _ ...... 98 254 697 66 30 34 14 ______. ______. 98 276 545 59 30 34 15...... 92 312 416 50 30 34 16. ____ . _ .... ______. 92 354 338 49 31 34 17...... _ 92 402 253 46 30 34 18.. 98 414 221 40 26 34 19. . - 98 355 221 40 24 34 20...... I..-...... 104 338 221 39 24 36 21 ___ ... ______. ______. 104 311 221 36 23 36 22 __ .... ______. ____ . __ . 117 288 242 40 ,27 34 23.. ____ . ______.. 124 271 253 43 27 34 24...... 104 322 253 46 26 34 25 ...... 98 420 242 46 23 34 26 ____ ...... __ . ______...... 98 604 221 39 23 33 27 ...... 98 711 192 37 26 33 28 ...... 98 833 183 37 25 33 29 __ ,.,. _ ...... ___ :.-...... 104 796 183 34 23 33 30...... __ . _ ..... _ .. __ ...... 110 650 183 33 20 33 31... __ .... ______. ______...... 726 30 22 NOTE. Shifting-control method used Apr^ 1-9, May 16-31, June 7-26, and Aug. 13-31. No record obtained Oct. 10 to Apr. 1. Monthly discharge of Antelope Creek near Darlington, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Month Run-off in Maximum Minimum Mean acre-feet October 1-9 ...... 19 18 18.4 328 124 43 85.3 5,080 833 117 354 21,800 806 183 439 26,100 July ...... -. . _ .. 157 30 64.8 3,980 50 20 30.1, 1,850 36 23 31.8 1,890 TRIBUTARY BASINS 135 PASS CREEK NEAR LESLIE, IDAHO LOCATION. In sec. 13, T. 7 N., R. 25 E., 5^ miles northwest of Leslie, Ouster County, 10 miles northwest of Mackay and 12 miles above confluence with Big Lost River. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 23,1920, to September 30, 1921. GAGE. Vertical staff on right bank; read by water master. Records during 1920 referred to vertical staff at different datum on right bank about 160 feet below present site. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. Bed composed chiefly of sand and gravel. Contro well defined and fairly permanent. One channel at all stages. EXTREMES OF DISCHARGE. Data insufficient to warrant determination of extremes of discharge. ICE. No record. DIVERSIONS.' None above station. f REGULATION. None. ACCURACY. Stage-discharge relation not permanent. Rating curve is well defined between 6 and 42 second-feet. Gage read to hundredths once or twice a week. Daily discharge obtained by applying gage height to rating table, except for periods of shifting control as noted in footnote to daily-dis charge table. For days of no record discharge is estimated or interpolated. Daily discharge considered good on days of gage readings; monthly summary fair. COOPERATION. Gage-height record and most of discharge measurements fur nished by water commissioner for Big Lost River. Discharge measurements of Pass Creek near Leslie, Idaho, during the year ending Sept. 80, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by , height charge Feet Sec.-ft. Feet See.-ft. Nov. 8 0.67 5:1 1.48 36.9 Apr. 2 Oandall and Jerman <». .98 13.2 29 Berkeley Johnson ___ 1.20 26.4 11 .89 10.4 July 23 1.00 13.7 29 Jerman and CrandalL. 1.07 17.7 Sept. 9 Berkeley Johnson...... 84 9.1 May 26 Lynn Crandall. __ 1.49 38.8 Associated with office of water commissioner for Big Lost River. 136 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Pass Creek near Leslie, Idaho, for the period Apr. 1 to Sept. 30, 1921 Day Apr. May June July Aug. Sept. 1 ____ . _ __ ... 1 9 28 2... . 13 1 42 27 3 ___ r -», ______26 11' 4.. ... ____ . _____ .. f " 5. ____ ... __ . ____ . 42 10 24 6. ____ . ___ . __ ...... 11 7... __ . _ . ___ . ____ . 11 8 __ . _ . ... J.O I 21 9. _ _.._ -._...... 911 10- _ - _ -- __ _ - 51 11 11 10 12...... ___ ...... 10 19 13...... ____ ..... 11 1 14. _ .. __ .. __ .... _ . 11 15.. ____ .... ___ . 18 1 16.. _ ...... ______. 38 17 17. - . _ . _ . _.,.. 30 12 8.5 18 ____ . ______. __ . 11 19 ...... 26 20 ...... 16 21. ____ . __ . __ .... 31 12 22.... _ ...... 22 23 ...... 12 14 1 24 .. ______. __ .... I 30 14 25 . __ 11- 26 __ ... ______.... 13 38 29 8.1 27. __ - _ . __ . ___ ... is 28 41 } 28 29 . .. 17 42 27 11 O. U 80 __ . _ ...... 18 28 81 _ - _ __ .... 42 19 11 NOTE. Braced figures show estimated mean discharge for periods indicated. Shifting-control methods used Apr. 23-29, June 26 to July 16. Discharge interpolated or estimated Apr. 1,12, and 30. Monthly discharge of Pass Creek near Leslie, Idaho, for the period Apr. 1 to Sept. 30, 1921 Discharge in second-feet Run-ofl Month in acre-feet Maximum Minimum Mean April - . ----- 11.8 702 25.3 1,560 38.2 2,270 July....-...-...... 18.1 1,110 11.2 689 BCD 1/6 m t)G r 8.84 526 6,860 NOTE. See footnote to table of daily discharge. TBIBUTABY BASINS PORTNETTF RIVER AT TOPAZ, IDAHO LOCATION. In sec. 23, T. 9 S., R. 37 E., at Oregon Short Line Railroad bridge one-fourth mile west of Topaz flag station, Bannock County,, 1J^ miles above diversion dam of Portneuf-Marsh Valley Canal Co., and 6 miles southeast of McCammon. DRAINAGE ABBA. Not measured. RECORDS AVAILABLE. January 12,1913, to September 30,1915, and July 20,1919, to September 30, 1921. . GAGE. Enamel faced vertical staff fastened to abandoned bridge pile on left bank at jupstream side of railroad bridge; read by Mrs. Selma Hendricks. Gage used prior to September 30,1915, was a vertical staff on left bank 200 feet below present staff and at a datum 1.00 foot lower. DISCHARGE MEASUREMENTS. Made by wading, from railroad bridge immediately below, or.from highway bridge half a mile above. - "1 ' CHANNEL AND CONTROL. Bed composed of sand and gravel. Hardpan and con* * glomerate formation about 700 feet below gage forms control; shifts. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 4.35 feet May 9 (discharge, 771 second-feet); minimum stage, 1.14 feet January 7-9 (dis charge, 160 second-feet). 1913-1921 (not including period of no record; see "Records available"): Maximum stage recorded (on old gage) 6.1 feet April 3, 1913 (discharge, 902 second-feet); minimum stage,0.92 foot (present gage) August 17 and 3Q* 1919 (discharge, 116 second-feet). ICE. Stage-discharge relation not affected by ice on account of warm .springs entering stream above. DIVERSIONS. Numerous ranch diversions above. Stored water from reservoir of Portneuf-Marsh Valley Canal Co. is diverted for irrigation 1^ miles below. REGULATION. Water is stored during winter and spring in reservoir of Portneuf- Marsh Valley Canal Co. near Chesterfield and released during irrigation season. ACCURACY. Stage-discharge relation not permanent. Three well-defined rating curves used as follows: October 1 to November 21, November 30 to May 18, and June 7 to September 30. Gage read to hundredths once daily. Daily discharge ascertained by applying daily gage height to rating table and by shifting-control method. Records good except those for periods of shifting control, which are fair. Discharge measurements of Portneuf River at Topaz, Idaho, during^ the year ending Sept. SO, Gage Dis Gage Dis Date ' Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Dee. 18 F. M. Atklnson __ _ 1. 17 163 July 7 A.O.Fiedler...i. __ . 1.60 253 Mar. 21 2.16 328 29 1.58 266 Apr. 28 A. Q. Fiedler . __. .. 2.60 408 __ do ______1.54 243 .....do ... ,» .._ 4. 11 709 .^dq . - 1.22 178 June 16 _ .do ___ .: __ .. 2.08 360 3.38 SURFACE WATER SUPPLY, 1&21, PART XII B Daily discharge, in second-feet, of Portneuf River at Topaz, Idaho, for the yea, ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 ______.. 218 190 168 168 168 192 266 440 767 213 244 228 2.. ___ .. . 218 190 168 168 168 192 266 468 730 213 254 223 3.. 218 190 168 168 168 200 300 507 682 213 ' 244 233 4 _ L. . 209 190 168 168 168 208 318 587 658 233 244 . 213 5 209 190 168 168 168 232 354 607 659 233 9AA. 213 6 218 190 168 ,160 168 283 318 627 635 254 233 203 7 209 190 168 160 168 266 318 708 630 254 233 203 8...... - 209 180 168 160 168 266 318 729 580 244 233 203 9^. .... 209 180 168 160 168 249 336 771 580 233 233 203 10...... 209 180 168 160 168 232 318 729 505 244 233 203 11 209 180 176 160 168 266 300 708 481 244 244 203 12.. ____ 209 180 168 168 176 318 266 708 481 254 233 193 13. . 190 180 168 168 176 354 318 687 433 254 233 193 14. __ ... 200 180 168 168 176 373 354 708 410 ' 264 233 193 15 .. 190 180 168 168 176 411 392 729 387 254 233 193 16 . 190 190 168 168 184 430 373 750 364 254 233 ' 193 17 190 190 168 168 176 449 336 750 341 254 233 193 18 200 190 160 176 176 449 336 750 341 254 223 193 19 209 190 168 176 176 487 354 733 341 254 213 193 20 _____ - __ - 209 190 168 176 176 373 392 702 364 254 213 103 21... . 209 190 168 176 176 336 392 668 319 254 213 184 22.. _ .. ___ . 209 185 168 176 176 336 449 632 319 244 203 174 23...... 209 181 160 168 176 336 468 570 297 244 213 174 24.----- 200 177 168 168 176 318 449 644 275 244 203 174 190 177 168 168 176 336 449 673 264 244 213 174 26 190 180 168 168 176 430 720 254 244 213 174 27 ______- 190 189 168 168 184 318 411 731 244 244 213 174 28- __ . __ - 190 182 168 168 1R4 283 411 738 223 244 213 174 29 __ . ___ 190 179 168 168 266 392 757 213 244 223 174 30 190 168 168 168 266 411 729 213 244 223 174 31 .. 190 168 168 9AQ 751 244 223 NOTE. Shifting-control method used Nov. 22-29 and May 19 to June 6. Monthly discharge of Portneuf River at Topaz, Idaho, for the year ending Sept. SO, Discharge in second-feet Kun-off in Month acre-feet Maximum Minimum Mean 218 190 203 12,500 190 168 184 10,900 176 160 168 10,300 176 160 168 10,300 184 168 174 9,660 487 192 310 19,100 April...... _ . . 468 266 360 21,400 771 449 678 41,700 767 213 433 25,800 July.... _ __ ...... 264 213 244 15,000 254 203 227 14,000 September...... __ . __ ... ______233 174 194 11,500 771 160 279 202,000 PORTNEUF RIVER AT POCATELLO, IDAHO LOCATION. In sec. 27, T. 6 S., R. 34 E., at highway bridge at foot of Carson Street, 90 feet above old slaughterhouse bridge in Pocatello, Bannock County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. August 31, 1911, to September 30, 1921. For station 1 mile upstream, May 18, 1897, to October 14, 1899. TEIBUTAEY BASINS GAGE. Vertical staff attached to pile of highway bridge near left bank installed September 8, 1919, and used thereafter; read by W. S. Hutson. Gage used August 31, 1911, to September 7, 1919, was a vertical staff at about same location and same datum. Gage used 1897-1899 was a vertical staff spiked to pier of wagon bridge an eighth of a mile below plant of Pocatello Electric Light Co., 1 mile above present gage. DISCHARGE MEASUREMENTS. Made from upstream side of old slaughterhouse; bridge or by wading. CHANNEL AND CONTROL. Bed composed of rocks and boulders; very rough. One channel except at extreme high stages when left bank is overflowed. Control shifts within well-defined limits. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 7.60 feet May 10-16 and 18 (discharge, 1,500 second-feet); a higher stage and dis charge may have occurred during period of no record. Minimum stage recorded, 2.59 feet July 29 (discharge, 115 second-feet). 1911-1921: Maximum stage recorded, 7.8 feet May 30, 1917 (discharge in excess of 2,000 second-feet during period May 13 to June 14 when left bank was overflowed); minimum stage, 1.92 feet June 24 and 28, 1919- (discharge, 44 second-feet). 1897-1899: Maximum stage recorded, 12.80 feet May 18, 1897 (discharge, 1,880 second-feet); minimum stage, 6.10 feet July 4-11, 13, 17, and 18,. 1898 (discharge, 14 second-feet). ICE. Stage-discharge relation seriously affected by ice. DIVERSIONS. Numerous ranch diversions are made above gage. The largest, single diversion canal of Portneuf-Marsh Valley Canal Co., which irrigates- land near Downey. REGULATION. None below head of Portneuf-Marsh Valley Canal Co.'s canal. Storage reservoir of this company is near Chesterfield and has a capacity of about 28,000 acre-feet. ACCURACY. Stage-discharge relation changed during winter. Well defined rat ing curve used October 1 to January 6 and well-defined curve and curve parallel thereto used January 16 to September 30, except as noted in foot note to daily discharge table. Gage usually read to hundredths several1 times a week except for period May to July when daily readings were ob tained. Daily discharge ascertained by applying gage height to rating; table and by interpolating for days of no record. Records fair. COOPERATION. Services of observer paid by city of Pocatello. Discharge measurements of Portneuf River at Pocatello, Idaho, during the year ending- Sept. 80,1921 Gage Dis Oage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Dec. 16 3.10 231 A. Q. Fledler ...... 4.18 450 Jan. 11 3.31 0197 July 7 .. do...... 2.84 168 22 3.95 363 29 2.59 115 29 ..do ..__ .. 3.49 281 Aug. 7 2.68 122 Mar. 22 ..do __._ .,.,-.. 4.81 585 Sept. 24 _i do ...... 3.28 80S Apr. 24 A. Q. Fiedler .... _ .. 5.85 . 897 25 .....do ...... 3.28 208 May 9 .....do...... 7.45 61,400 a Stage dischai ge relation affected by ice. 6 Includes 175 second-feet estimated flow. 140 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Portneuf River at Pocatello, Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 __ ... __ . 281 281 260 239 265 369 526 886 1,050 184 115 167 2. __ ...... 281 281 260 OCft 261 397 526 918 1,020 175 122 175 3...... 281 281 256 260 258 459 526 950 982 167 122 184 4. __ ...... 270 281 253 249 261 521 526 1,020 '886950 159 122 192 5 ...... 270 281 f)AQ 240 264 582 670 1,080 152 122 196 6. ____ ...... 270 277 OylQ oon 268 611 655 1,180 854 159 122 201 7 ...... 270 273 249 268 596 640 1,280 823 167 129 201 8 _ - .... 270 270 244 268 582 640 1,430 761 . 159 129 201 9. ____ ..... 270 239 273 554 1.430 730 152 129 201 10. ___ 292 270 239 278 E«O 640 1,500 700 144 129 201 11 304 267 239 200 294 572 640 1,500 640 144 136 210 12. __ ...... 304 263 239 309 582 640 1,500 582 152 . 136 210 13 304 260 234 341 611 640 1,500 554 152 136 210 14...... 304 260 229 330 640 700 1,500 52ft 144 144 201 15 281 260 210 611 730 1,500 446 144 144 192 16. 281 260 192 238 582 740 1,500 421 136 144 184 17 _ 281 260 ono OOQ qon KQfi 7 en 1,500 397 136 ,133 188 18 ____ - __ - 292 260 226 9QS 611 761 1,500 374 144 122 192 19 304 260 243 238 640 761 1,480 341 144 129 192 20. __ - .-... 322 260 260 9fiQ 670 761 1,460 341 144 129 192 21.... _ . __ - 339 260 260 300 330 626 761 1,430 352 152 129 196 99 333 260 260 OQf\ OQf\ COO 792 341 144 134 201 93 327 270 260 341 325 coo 886 1,250 320 136 139 206 24 315 281 248 346 320 582 886 1,220 309 122 144 210 25 __ - _ .. 304 281 239 352 . 325 582 886 1,220 298 122 147 210 26 ... 292 281 230 315 330 582 886 1,150 268 115 150 201 yj...... 286 281 220 278 335 582 886 1,180 238 115 152 201 '28 ___ 281 270 223 273 341 582 886 1,220 220 115 155 201 29...... 281 265 226 268 568 886 1,180 206 115 159 201 30.. ____ ..... 281 260 229 268 554 886 1,150 192 115 159 201 31 ___ . ___ . 281 234 268 540 1,080 115 167 NOTE. Shifting-control method used June 4-14, July 16-25. Stage-discharge relation affected by ice jam Jan. 7-15 and Feb. 16-20; discharge estimated from study of weather records, observer's notes, and one discharge measurement. Gage not read Oct. 2,5,18,20,22,25,27,29-31, Nov. 2,4,6,7,9,10,11,14,16,18,20, 21,23,25,26,29, Dec. 1,3,4,6,8,10,11,13,15,17-19,21, 22,34,26,28,29,31, Jan. 2,5,6,17,18,20,21,24,26, 28, 30, Feb. 1,2,4,5, 7,9,11,14,21,23,25,27, Mar. 1,3,4,7,10,11,13,15,17,19,21,23,25,27,29,31, Apr. 2,3,6,8,10,12,16, 17,20, May 17,19,29, June 24,29, July 1,31, Aug. 4,5,9,12,15,17,20,22,23,25,26,28, Sept. 5,21,23,27,28, and 30; discharge interpolated. Monthly discharge of Portneuf River at Pocatello, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 339 270 292 18,000 281 260 269 16,000 260 192 239 14,700 352 253 15,600 341 268 303 16,800 670 369 571 35,100 886 526 725 43,100 1,500 886 1,290 79,300 Jane ______-." ...... 1,050 192 537 32,000 July ...... 184 115 143 8,790 167 115 136 8,360 210 167 ,-. 197 11,700 1,500 115 414 299,000 TEIBUTARY BASINS 141 LOCATION. In sec. 1, T. 9 S., R. 25 E., 650 feet below Minidoka dam and 6 miles south of Minidoka, Minidoka County. RECORDS AVAILABLE. May 1, 1909, to September 30, 1921. GAGE. Friez water-stage recorder on left bank, 300 feet below site of gage used prior to October 31,1914; inspected by employees of United States Bureau of Reclamation. DISCHARGE MEASUREMENTS. Made from suspension footbridge a few feet above CHANNEL AND CONTROL. Rock cut; practically permanent, but rough. EXTREMES OP DISCHARGE. Maximum mean stage during year, 9.43 feet on July 16-17 and 22 (discharge, 1,500 second-feet). No flow at various times when head gates were closed. 1909-1921: Maximum mean stage, 9.44 feet on May 20, 1914 (discharge, 1,520 second-feet). No flow at various times when head gates were closed. ICE. Observations discontinued during winter. DIVERSIONS. None above station and none close enough below to affect stage- discharge relation. REGULATION. Flow controlled by head gates at Minidoka dam. ACCURACY. Stage-discharge relation permanent. Two well-defined curves used. Operation of water-stage recorder satisfactory. Discharge ascertained by applying to rating tables mean daily gage height obtained by inspecting recorder graph. Records excellent. COOPERATION. Gage-height record and 20 discharge measurements furnished by United States Bureau of Reclamation and Minidoka Irrigation District. North Side Minidoka canal diverts water from the right bank of Snake River in sec. 1, T. 9 S., R. 25 E., for irrigation of land in North Side Minidoka project of the United States Bureau of Reclamation. Project comprises about 20 miles of main canal and about 260 miles of laterals. Discharge measurements of North Side Minidoka canal near Minidoka, Idaho, during the year ending Sept 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge \ Feet Sec.-ft. Feet Sec.-ft. Oct. 2 H. L. Crawford a ...... 5.84 674 July 14 Crawford and Anderson 9.30, 1,460 Mar. 25 3.27 254 23 . do - 9.41 1,510 May 13 Q. C. Baldwin 9.23 1,400 30 .....do...... -.: 9.41 1,620 4.00 359 .do 8.97 1,410 9 7.27 Daily discharge, in second-feet, of North Side Minidoka canal near Minidoka, Idaho, for the year ending Sept. SO, 1921 Day Oct. Mar. Apr. May June July Aug. Sept. i. 666 509 916 471 1,460 1,490 1,280 2.u ...... 552 521 914 358 1,450 1,490 1,280 3 __ _ - 166 654 956 358 1,460 1,470 1,280 4 _ ...... - 65 719 1,040 356 1,460 1,440 1,280 5... 558 1,070 354 1,460 1,380 1,270 6 ____ ... ______556 1,110 505 1,460 1,380 1,260 T...... 558 1,150 654 1,460 1,380 1,260 8..- ...... 562 1,150 i830 1,460 1,390 1,28O 9 ____ ...... 564 1,220 *971 1,460 1,380 l,2fiO ]0 ____ . ____ . _ ...... 564 1,250 1,120 1,450 1,370 1,300 562 1,320 1,230 1,460 1,380 1, 310 12.. . ______...... 560 1,410 1,370 1,460 1,380 1,260 13 __ ...... __ .... 560 1,440 1,450 1,460 1,380 1.22O 14...... -...... 560 1,450 1,450 1,460 1,380 1,190 15...... 560 1,450 1,440 1,470 1,380 1,180 16.. 562 1,450 1,450 1,500 1,380 1, ISO 17 ...... 564 1,450 1,450 1,500 1,380 1, ISO 18 ...... 567 1,380 1,450 1,490 1,380 1,180 19 ... 128 569 1,310 1,450 1,490 1,380 1,150' 20...... 128 567 1,300 1,450 1,490 1,380 1,080 21 __ ...... 190 569 1,270 1,450 1,490 1,370 1,060' 22 ______. . 624 1,190 1,450 1,500 1,380 1, 050' 23. .-... 249 663 1,180 1,450 1,490 1,380 1,050 24 ______252 665 1,150 1,450 1,490 1,380 1,030 25 ... . #eq flflO 1,090 i NOTE. No record Oct. 5 to Mar. 18. Monthly discharge of North Side Minidoka canal near Minidoka, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean October 1-4 ______666 65 362 2,870 March 19-31 ______. ___ . ______458 128 275 7,090 914 509 624 37,100 May... ____ ._ __ -...... 1,450 843 1, 170 71,900 June ______. ______1,460 354 1,160 69,000 1,500 1, 450 1,480 91,000 August ______, ...... 1,490 1,280 1,390 85,500 September __ . ____ . ______1,310 940 1,160 69,000 , SOUTH SIDE MINIDOKA CANAL NEAR MINIDOKA, IDAHO LOCATION. In sec. 12, T. 9 S., R. 25 E., Cassia County, 300 yards below head gates at Minidoka dam and 6 miles south of Minidoka, Minidoka County. RECORDS AVAILABLE. April 21, 1909, to September 30, 1921. GAGE. Friez water-stage recorder on right bank; inspected by employees of United States Bureau of Reclamation. Prior to irrigation season of 1910 gage was about 250 feet upstream. Datum unchanged since spring of 1910. DISCHARGE MEASUREMENTS. Made from suspension footbridge at gage. CHANNEL AND CONTROL. Canal section in earth; may shift. Stage-discharge relation affected by growth of aquatic plants. EXTREMES OF DISCHARGE. Maximum mean stage during year, 5.71 feet July 16 and 18 (discharge, 1,100 second-feet); probably no flow during period of, no record. 1909-1921: Maximum mean stage that of July 16 and 18,1921; probably no flow during various periods each year of no record. ICE. No records obtained during winter. DIVERSIONS. None above gage. REGULATION. Flow controlled by head gates at Minidoka dam. ACCURACY. Stage-discharge relation not permanent. Standard rating curve well defined above 400 second-feet; several parallel curves used. Operation of water-stage recorder satisfactory. Mean daily gage height obtained by inspection of recorder graph. Daily discharge ascertained by applying mean daily gage height to rating table or by shifting-control method, except as, noted in footnote to daily discharge table. Records good. COOPERATION. Gage-height record and 16 discharge measurements furnished by United States Bureau of Reclamation. South Side Minidoka canal diverts water from the left bank of Snake River in sec. 1, T. 9 S., R. 25 E., for irrigation of land in South Side Minidoka project, of United States Bureau of Reclamation. Project comprises about 13 miles of main canal and about 20 miles of laterals. Discharge measurements of South Side Minidoka canal near Minidoka, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height* charge Feet Sec.-ft. Feet Sec.-ft. Oct. 8 E. P. Andersono ...... 2.78 347 July 22 5.62 1,070 May 11 .....do...... 4.10 660 29 5.63 1,050 13 G. C. Baldwin...... 4.34 709 ...r.do I...... 5.49 966 26 3.45 498 16 ... ..do-. . _..... - 5.20 910 June 3 .....do...... 2.98 417 24 5. 30 875 13 .....do...... 4.76 849 Sept. 1 4.83 798 20 T.B. Newell- __ _ . 5.40 977 10 3.83 528 21 E. P. Anderson ...... 5.38 1,020 18 T. E. Newell...... 3.80 511 29 Crawford and Anderson 5.30 986 22 Crawford and Anderson 3.27 401 July 9 E. P. Anderson ____ 5.66 1,090 <* Employees United States Bureau of Eeclamation. 144 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of South Side Minidoka canal near Minidoka, Idahor for the year ending Sept. 30, 1921 Day Oct. Apr. May June July Aug. Sept. 1 ______...... 351 177 407 1,010 1,040 812- 2... _ __ . . j 360 196 405 1,010 1,020 785 s...::.::.:::::::::::;:::.::::::::±:::::::: 362 210 403 1,010 1,000 704 4...i...... ^...... ^...j.. 353 242 403 996 1,000 615 5.. . 351 261 403 985 982 635. 6. __ .. __ . ___ ...... 358 317' 403 1,010 970 591 7. ____ ..... _ . _ . ___ . __ __ . 357 390 401 1,040 OR4 533 8 ____ . __ .... ______.... _ . ___ . 351 431 401 1,060 964 518 9...... 351 441 447 1,060 964 527 10 ______.... __ ...... 353 485 516 1,070 976 529- 11... ______...... 351 584 638 1,080 985 529- 12 ...... 353 655 743 1,080 990 529 13 ._..____,.______,______.__,______.___ 355 64 724 754 1,090 979 551 14 ...... I...... 351 104 791 451 1,090 964 522 15 __ .... ______. ______... 102 842 868 1,100 QPd SIS- 16 ______. ______. 100 840 924 1,100 907 518. 17 ...... 100 840 967 1,100 870 518 18 ______. __ . ____ . ______. .... 100 769 996 1,100 859 511 19 ____ . ______i. ______. 101 680 996 1,080 848 513- 20...... 102 640 993 1,060 851 476 21 ______. 102 575 990 1,070 848 417 22 ___ .. __ . ______.... 101 545 1,000 1,070 851 401 23...... 104 542 1,010 1,050 865 401 24...... _ ...... 100 538 . 999 1,040 884 401 25 ...... 102 502 979 1,040 912 39ff. 26 ______.. 111 483 970 1,030 927 382 27 ...... 139 489 976 1,040 910 390 28 ...... 165 483 982 1,050 882 407 29...... :...... 174 485 979 1,050 898 394 30...... 177 491 993 1,050 876 396. 31. ______. ______. ____ .. 476 1,050 856 NOTE. No record obtained Oct. 16 to Apr. 12; discharge Oct. 15 and Apr. 13 determined by averaging discharge for intervals of the day. Monthly discharge of South Side Minidoka canal near Minidoka, Idaho, for the year ending Sept. 30, 1921 Discharge in second-feet Kun-off in Month acre-feet Maximum Minimum Mean October 1-15. ______. _____ ...... 362 263 348 10,400- April 13H30...... _.._..,,_.._ ...... 177 64 114 4,070 May...... I...... 842 177 520 32,000 June ______... _ ^.-. __ . ______1,010 401 747 44,400* July 1,100 985 1,050 64,600 1,040 848 928 57, 100 812 382 513 30, 500 NOTE. See footnote to table of daily discharge. TRIBUTARY BASINS 145 GOOSE CREEK ABOVE TRAPPER CREEK, NEAR OAKLEY, IDAHO LOCATION. In sec. 13, T. 15 S., R. 21 E., 5 miles above Trapper Creek and 10, miles south of Oakley, Cassia County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 29, 1911, to September 30, 1916; March 27, 1919, to September 30, 1921. GAGE. Friez water-stage ; recorder on right bank; inspected by employees of Oakley Canal Co. Datum unchanged since August 29, 1912. Gage used prior to flood of July 30, 1912, was on right bank 200 feet downstream and at a different datum. DISCHARGE MEASUREMENTS. Made from cable 250 fe,et above gage. , CHANNEL AND CONTROL. Bed composed of rock, overlain with mud and silt. Control of same material, subject to change. Banks are high and not likely to be overflowed. Point of zero flow determined on July 31, 1915, at gage height 0.9 foot. EXTREMES OP DISCHARGE. Maximum stage during year from water-stage re corder, 5.23 feet, at 9 a. m. May 18 (discharge, 670 second-feet); minimum stage, 1.64 feet at 8 a. m. November 30 (discharge, 9.7 second-feet). Both higher and lower stages no doubt occurred during period of no record. . 1911-1916; 1919-1921: Maximum stage recorded that of May 18, 1921; minimum stage, 1.19 feet at 9 a. m. August 13, 1915 (discharge, 1.1 second- feet). ICE. Stage-discharge relation seriously affected by ice; observations discon tinued during winter. DIVERSIONS. A number of small Canals and ditches divert above station chiefly for irrigation of lands belonging to the Utah Construction Co. REGULATION. None except that due to diversions. ACCURACY. Stage-discharge relation not permanent. Two rating curves, which are well defined to 130 second-feet and fairly well defined above, and curves parallel thereto based on frequent discharge measurements were used during the year. Operation of water-stage recorder not entirely satisfactory, be cause of faulty operation of inlet pipe. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph or by shifting-control method as noted in footnote to daily discharge table. Records good except for possible inaccuracy due to faulty operation of inlet pipe. COOPERATION. Gage-height record furnished by Oakley Canal Co. Discharge measurements of Goose Creek above Trapper Creek, near Oakley, Idaho, during the year ending Sept. 80, Gage Dis Gage Dis*- Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Mar. 27 L. L. Bryan ______2.79 110 July 27 Johnson and Griffith _ 2.25 45.6 May 11 Fiedler and Griffith a .. 4.80 565 .....do...... 2.12 39.4 .....do...... 4. 13 323 .do...... 2.00 29.0 July 9 . .do...... 2.40 63.5 An employee of the Oakley Canal Co. 146 SURFACE WATER SUPPLY, 1921, PART XII B Daily di; , in second-feet, of Goose Creek above Trapper Creek, near Oakley, Idaho, for the year ending Sept. 80, 1921 Day Oct. Nov. Dec. Mar. Apr. May June July Aug. Sept.- 1 ______17 OQ 36 106 353 KQQ O4 37 27 2 ...... 16 30 39 112 394 523 92 27 3 ______. _ . 18 30 42 432 458 90 } 100 in 4 ____ .... ____ . 16 31 471 412 82 60 32 5 ___ .. 16 31 484 And. 85 52 30 6 __ .... ______16 30 130 510 387 81 45 29 7...... 17 29 536 358 76 41 28 8...... 17 Qrt 356 73 40 26 9. __ ...... 16 30 OKI 65 37 26 10...... 16 9Q 159 e;SQ 322 62 36 25 11...... 17 9Q 159 562 291 59 34 24 12 __ ...... 18 29 171 562 267 58 36 23 13...... 20 32 192 562 243 57 37 24 14 ____ .. __ . .... 21 33 227 576 233 54 39 25 15 ...... 1 22 33 251 589 223 53 40 25 16...... 25 33 255 602 223 52 40 26 17 ...... 26 34 253 616 223 51 37 27 18 25 34 266 670 211 53 35 26, 19 ____ . __ .. __ . 26 34 257 198 152 33 27 20 ...... 29 37 266 1 650 191 258 31 29 * 21...... 29 36 277 177 107 29 , 30 22.. ___ ..... ___ . 33 38 286 589 163 78 28 29 23 ______.. 33 40 300 471 151 68 27 29 24...... 31 38 316 497 ' 140 64 27 28 25 ...... 29 43 325 510 132 57 28 27 26 ...... 30 44 327' 549 126 53 26 27 27...... 31 4.Q 111 327 536 118 46 25 28 28 ...... 31 44. 109 320 562 112 43 47 28 29 ____ ... ____ . 32 *\A 108 320 576 107 40 32 28 30...... 32 32 106 325 552 101 39 28 28 31...... 32 105 533 38 28 NOTE. Braced figures show estimated mean discharge for periods indicated. Shifting-control method used May 29 to June 9. Interpolated May 14. No record obtained Dec. 5 to Man 26. Monthly discharge of Goose Creek above Trapper Creek, near Oakley, Idaho, for the year ending Sept. 80, 1921 Discharge in second-feet Bun-off in Month acre-feet Maximum Minimum Mean October ...... 33 16 23.7 1,460 November...... 49 29 34.3 2,040 December 1-4 .1 ____ w _, ______...... 42 36 39.5 313 March 27-31. _ . ______.. __ . _ . __ .. 111 105 108 1,070 April ______327 106 224 13,300 670 353 551 33,900 539 101 258 15, 400 July ...... 258 38 73.5 4,520 Augnst. - . . 25 39.8 2,450 September ______...... 32 23 27.3 1,620 TRIBUTARY BASINS 147 : TRAPPER CREEK NEAR OAKLEY, IDAHO LOCATION. In sec. 33, T. 14 S., R. 21 E., 1^ miles above Nelson ranch, 1 mile from east boundary of Minidoka National Forest, 5 miles above Oakley dam, and 9 miles southwest of Oakley, Cassia County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May'1, 191.1, to September 30, 1916; March 28, 1919, to September 30, 1921. GAGE. Friez water-stage recorder on left bank 1 mile west of east boundary of Minidoka National Forest installed April 8, 1913; inspected by employees of Oakley Canal Co. From May 1, 1911, to August 27, 1912, a Lietz water- stage recorder was used half a mile downstream and at a different datum; from August 28, 1912, to April 7, 1913, fragmentary records were obtained from a staff gage opposite Nelson's house IJxJ miles below present installation. DISCHARGE MEASUREMENTS. Made by wading. Flow at gage augmented about 3 second-feet during summer of 1921 by drilling two artesian wells 1 mile above gage. CHANNEL AND CONTROL. Bed composed of small boulders and coarse gravel; control shifting. Banks brushy and not likely to be overflowed. EXTREMES OF DISCHARGE. Maximum stage during year from water-stage recorder, 3.44 feet May 28 and June 8 (discharge, 98 second-feet); minimum stage, 1.99 feet October 1-6 (discharge, 9.6 second-feet). A lower stage and discharge may have occurred during a period of no record. 1911-1916; 1919-1921: Maximum stage recorded that of May 28 and June 8,1921; minimum stage probably occurs in winter when stage-discharge relation is affected by ice. ICE. Stage-discharge relation seriously affected by ice; observations discon tinued during winter. DIVERSIONS. No diversions of consequence above station. REGULATION. None. ACCURACY. Stage-discharge relation changed due to collection of brush and debris on control. Two fairly well defined curves and curves parallel thereto, were used. Operation of water-stage recorder not satisfactory at times. Daily discharge ascertained by applying to rating table mean daily gage height obtained by ihspection of recorder graph, except as noted in footnote to daily discharge table. Records fair except for October and November, which are good. COOPERATION. Gage-height record furnished by Oakley Canal Co. Discharge measurements of Trapper Creek near Oakley, Idaho, during the year . ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height. charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft^ Mar. 26 L. L, Bryan ______2.39 24.7 July 28 Johnson and Griffith 2.39 17.2 May 10 A. G. Fiedler...... 3.16 74.1 28 .....do .- .. , 2.39 17.1 June 9 Fiedler and Griffith « _ 3.31 91.9 Aug. 9 Berkeley Johnson _ ;... 2.26 15.1 July 8 . __ do...... 2.56 25.2 Sept. 22 2.25 14.7 Employee of Oakley Canal Co. 148 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Trapper Creek near Oakley, Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Mar. Apr. May June J«iy Aug. Sept. 1... _ .... ____ 96 13 11 57 92 34 16 15 2 . 96 13 12 62 88 32 16 .15 3 ___ . ____ . 9 6 13 12 64 86 32 16 15 4 ____ . __ .. 9 K 14 65 88 31 16 15 5...... 9 6 14 69 88 29 16 15 6. ______. .... 96 14 77 88 28 15 15 7... __ ...... 9 9 14 74 87 28 15 14 8...... 9.9 14 75 92 22 15 14 9. __ . __ 9 0 13 76 89 21 15 14 10...... 10 13 77 , 86 21 15 14 11... _ ...... 10 13 79 84 24 16 14 12..... __ . ____ . 11 13 82 82 26 16 14 13...... ______. 11 13 81 80 20 16 15 14- ______". 11 14 81 77 20 16 15 15...... 12 13 85 76 20 16 16 16.. _ . _ . __ . .... 12 13 89 73 20 15 15 17...... 11 13 92 69 20 15 15 18...... 12 13 91 63 19 15 15 19...... 12 13 85 60 19 15 15 20...... 13 13 81 54 19 15 15 21...... 15 13 25 78 51 19 15 15 22. ______...... 13 12 25 76 48 19 15 15 23...... -.. .,.. 12 12 26 75 45 19 15 15 24.. ___ ...... 12 12 26 78 44 19 15 15 25 _ ...... 13 12 26 82 42 18 15 15 26...... 13 12 26 85 41 17 15 15 27...... 12 14 25 91 40 17 15 15 28...... 13 12 25 47 97 38 16 15 15 29 ._ _. 13 12 25 50 96 36 17 15 15 30 _._,_ __ .... 13 12 55 93 34 17 15 15 31 ...... 14 93 17 15 NOTE. Shifting-control method used June 16-30. Discharge interpolated Mar. 24, 25, May 24, 25, July 11,15-20,25-27, Aug. 1-3, 7, 8,10,14-17,21-24, 28-31, Sept. 4-7,11-14, 18-21, and 25-28. No record obtained Dec. 4 to Mar. 20 and Mar. 30 to Apr. 27. Monthly discharge of Trapper- Creek near Oakley, Idaho, for the year ending Sept. 80, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean October ______15 9.6 11.5 707 November __'. ______14 12 13.0 774 December 1-3 ______, ...... 12 11 11.7 89.6 March 21-29 ______. ______. ___ ..... 26 25 25.4 453 April 28-30. ______. ______. _ ... . . 55 47 50.7 302 97 57 80.2 4,930 June ______,92 34 67.4 4,010 July ...... 34 16 21.9 1,350 August _ - __ . ___ . ______16 15 15.3 941 September...... 16 14 14.8 881 NOTE See footnote to table of daily discharge. TBIBUTARY BASIFS 149 P. A. LATERAL NEAR MILNER, IDAHO LOCATION. In sec. 22, T. 10 S., R. 21 E., Jerome County, 200 yards below pump ing station and 2J^ miles northeast of Milner, Twin Falls County. RECOEDS AVAILABLE. April 29, 1919, to September 30, 1921. GAGE. Vertical staff near left bank; read by employees of North Side Canal Co. (Ltd.). Stevens eight-day .water-stage recorder operated for short periods during irrigation season of 1919. DISCHAEGE MEASUBEMENTS. Made from foot plank at rating flume just below CHANNEL AND CONTEOL. Canal .section in earth; is often obstructed by growth of moss. Concrete rating flume below gage contracts section forming per manent control. EXTEEMES OF DiscHABGE. Maximum discharge, 62.3 second-feet May 27; canal reported dry on numerous occasions. 1919-1921: Maximum discharge, 64 second-feet May 11-13, 1920; canal dry on numerous occasions. ICE. No records obtained during winter. DIVEBSIONS. One small diversion between pumping station and gage furnishes water for pumpman's garden. REGULATION. Flow regulated by pumps at head of canal. ACCURACY. Stage-discharge relation changed during season. Standard curve well defined; several parallel curves used. Gage read to hundredths twice daily; account taken of all periods when pumps were not operated. Daily discharge obtained by applying mean daily gage height to rating table or by shifting-control method, except as noted in footnote to table of daily dis charge. Records good. COOPBBATION. Gage-height record and eight discharge measurements furnished hv North Side Canal Co. (Ltd.). P. A. lateral diverts water pumped from right bank of Snake River above Milner dam, in sec. 22, T. 10 S., R. 21 E. Water is used for irrigating part of the North Side Twin Falls project. Discharge measurements of P. A. lateral near Milner, Idaho, e year Sept. 80, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet. Sec.-ft. Apr. 29 W. N. McConnela .... 1.18 13.7 July 7 W. N. MeOonneL.- ... 2.10 61.5 . .do.-... 1.62 29.4 12 .....do...... -. 2.11 58.0 10 .... . do...... 1.67 36.2 13 2.13 58.9 11 Baldwin and McCon- . 20 W. N. MeOonnel ...... 2.12 56.9 ^ 1.77 41.4 26 16 W. N. McConnel. .... 2.08 69.4 2.12 59.9 26 Stocking & and Bur- 26 McOonnel and Bur- 2.12 69.2 dick ._ . 2.12 59.4 27 61.5 Aug. 2 L. T. Burdlck _.- -.. 2.13 57.3 2.12 3 2.13 57.2 27 .... .do". 2.12 61.6 19 1.82 47.5 L. T. Burdiek...... 2.02 64.0 23 1.80 44,8 11 W. N. McConnel ___ 2.08 69.6 31 .....do...... 1.80 45.8 21 2.08 60.0 1.77 42.6 July 2 .do. ______.... 2.11 57.7 "Employees of Twin Falls Canal Co. & Employees of North side Canal Co. (Ltd.). 150 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of P. A. lateral near Milner, Idaho, for the year ending Sept. SO, 1921 Day Oct. Apr. May June 'July Aug. Sept, 1 ______60 14 59 61 58 44 2 ___ . _____ . ___ . ______. _____ . 35 , 14 60 62 58 44 3 ___ . ______... __ . 59 14 62 61 58 25 4 ___ . ___ . ______. ______.. 59 22 53 61 58 43- 5 ______-.. _ .. ______59 29 41 61 58 43 6 ______... ______. ______.. 60 30 53 60 58 43 7 ...-...... _. 16 31 51 60 58 42 8 ______..... ______. ____ ...... 6 31 52 60 58 42 9. __ ...... __ . _ 31 55 60 58 38 10 ___ . __ . _ . __ ..... __ . __ ...... 38 56 60 58 43 11 ...-. . ,.. 42 59 59 57 4* 12 ___ . ______... _ .... ____ . 42 59 68 0 43 13 __ . _ ..... _____ . ___ ...... _ . ___ .. 54 58 58 0 42 14.. . --_..-_ . - - ..- . ..- 57 58 58 0 42 15...... -...... 58 58 57 0 43 16...... _ 59 59 58 10 43- 17...... 60 59 58 44 43 18 ...... _ ...... 60 60 57 47 43 19 __ . ______.. __ ...... 60 60 58 47 44 20 ______. ______. 61 60 58 47 44 21 __ ..... __ .. __ . _____ . __ . __ .... 61 60 58 46 44 22 ...... 60 59 59 47 43 23...... _ ...... _ ...... 61 59 59 45 43= 24 _____ ..... ______. __ .. __ . ___ . 44 60 59 46 43 25^...... 61 60 59 46 44 26..... _ .- __ . ___ . ______. ___ . 61 59 59 45 32-43 27 ______. 62 61 59 45 28 ____ . ______...... 5 62 61 59 45 0 29...... T...... 14 62 62 59 44 Of 30. ______...... 14 62 62 58 44 0> 31 ...... i...... __ ...... __ . 61 58 45 NOTE. No record obtained Oct. 9 to Apr. 27, pumps closed down. Canal reported dry Aug. 12-15 and Sept. 28-30. Mean of discharge used Oct. 8, Apr. 28, Aug. 11,16, Sept. 3 and 27 when pumps operated part time. Monthly discharge of P. A. lateral near Milner, Idaho, for the year ending- Sept. SO, 1921 Discharge in second-feet Bun-off iU Month acre-feet Maximum Minimum Mean 60 6 44.2 701 April 28-30 _____ , ______- 14 5 11.0 65.5. 62 14 47.2 2,900 62 41 57.8 3,440 July . ______...... 62 57 59.1 3,630 58 0 42.9 2,640 44 0 37.6 2,240 NOTE. See footnote to table of daily discharge. MtTRTAtTGH CANAL NEAR MILNER, IDAHO LOCATION. In sec. 32, T. 10 S., R. 21 E., an eighth of a mile below pumping sta tion at head of canal and 1^4 miles southeast of Milner post office, Cassia County. RECORDS AVAILABLE. June 1 to September 30, 1921. GAGE. Vertical stafif attached to concrete stilling well near right bank; read by- employees of Milner Low Lift Irrigation District. TRIBTTTAEY BASINS 151 DISCHARGE MEASUREMENTS. Made from foot plank 100 feet above gage. CHANNEL AND CONTROL. Canal section in earth; banks clean. Control poorly defined and shifting. EXTREMES OP DISCHARGE. Maximum stage recorded during the period June 1 to September 30, 1.80 feet June 26-30 (disch'arge, 53 second-feet). Canal dry on numerous occasions. ICE. No records obtained during winter; pumps not operated. DIVERSIONS. -None above station. REGULATION. Flow regulated by pumps at head of canal. ACCURACY. Stage-discharge relation not permanent. Rating curve well de fined between 15 and 30 second-feet; extended beyond these limits. Sev eral well-supported parallel curves used. Gage read daily to hundredths; account taken of all periods when pumps were not operated. Daily dis charge obtained by applying mean daily gage height to rating table or by shifting-control method, except as noted in footnote to daily discharge table. Records fair. COOPERATION. Gage-height record furnished by Milner Low Lift Irrigation District. The Murtaugh canal diverts water by pumping from the south side of Snake River in the backwater above Milner dam and furnishes water for irrigation of such lands as have been cultivated within the Milner Low Lift Irrigation District. Discharge measurements of Murtaugh canal near Milner, Idaho, during the period June 1 to Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet 8ec.-/t. June 17 W. N..McConnel <» __ . 1.50 38.6 July 27 W.N. McConnel .. 1.68 50.2 22 1.80 53.4 .....do...... 90 16.6 July 1 1-.76 90.6 3 ..do.. . __ . 1.01 21.5 . .do .... 1.72 50.9 7 . .do...... 1.20 29.7 15 .....do...... 1.68 49.6 22 ... ..do ...... 1.10 26.7 20 do ., . . 1.68 60.0 Sept 15 do ...... _ 1.33 on o o Employee of Twin Falls Canal Co. Daily discharge, in second-feet, of Murtaugh canal near Milner, Idaho, for the -period June 1 to Sept. 30, 1921 Day Jnne July Aug. Sept. Day June July Aug. Sept. 1 ____ ... _ . 52 52 16...... 39 50 13 39 2 ______... 50 28 17 ...... 39 50 26 41 3. 52 21 18 ...... 39 50 28 41 4 ______... 52 21 19... _ . __ . ... 39 50 50 29 5 ______.. 52 21 20...... 39 50 50 12 6 ______... 52 21 21 ... ___ ...... 39 50 50 41 7 ______... 48 28 22.. ______.. 46 50 29 41 8 ____ . _ ... 14 23...... 32 50 13 41 9...... 24 ...... 7 50 48 10 _ ...... 26...... 30 44 50 11 ___ .. __ ... 26...... 53 50 50 12 ______... 27... _ . __ ... 53 50 50 IS ...... 11 28 _...... 53 50 , 50 14 __ . ____ . 50 29 53 51 50 15 _ __ ... 29 50 30 30.. ____ 53 51 50 31 ...... 52 NOTE. Canal reported dry June 1-14, July 8-12, Aug. 9-15, and Aug. 24-to Sept. 14. Mean dis charge used June 15, 23, 24, July 7,13,25, Aug. 8,16, 23, Sept. 15,19, and 20, when pumps were operated part time. 152 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of Murtaugh canal near Milner, Idaho, for the period June 1 to , , Sept. 30, 1921 Discharge in second-feet Run-ofl in Month ' , acre-feet Maximum Minimu Mean 53 0 21.4 1,270 July ...... -. .-...... 52 0 40.9 2,510 52 0 15.0 922 50 0 22.1 1,320 The period .... ______6,020 . NOTE. See footnote to table of daily discharge. NORTH SIDE TWIN FALLS CANAL AT MILNER, IDAHO LOCATION. In sec. 20, T. 10 S., R. 21 E., Jerome County, half a mile north of Milner post office, Twin Falls County, and three-fourths of a mile below head gates at Milner dam. RECORDS AVAILABLE. May 10, 1909, to September 30, 1921. GAGE. Stevens eight-day water-stage recorder on right bank, referred to staff in float well; installed April 1, 1918; inspected by McConnel and Grose. Staff gage attached to left abutment of old highway bridge 100 yards upstream used prior to that time. A slide gage and a Lietz water-stage ^ recorder at same site and datum were used periodically 1911-1913. New datum April 1, 1918. DISCHARGE MEASUREMENTS. Made from cable at gage. CHANNEL AND CONTROL. Channel is a permanent concrete-lined section. Growth of moss heavy during summer and stage-discharge relation is seriously affected. Control apparently indeterminate. EXTREMES OF DISCHARGE. Maximum mean discharge, 3,200 second-feet July 5-7 and 29-31. Canal dry October 1-7, March 30, and April 1. 1909-1921: Maximum mean discharge that of July 5-7 and 29-31, 1921. Minimum flow, zero at many times when head gates were closed. ICE. Stage-discharge relation not seriously affected by ice. DIVERSIONS. None between gage and head gates and none for some distance below. Surplus water may be discharged into river through waste gates about 200 feet below head of canal. REGULATION. Flow regulated by head and waste gates. ACCURACY. Stage-discharge relation not permanent; changes due largely to growth of aquatic plants. Standard rating curve well defined; several paral lel curves used. Operation of water-stage recorder satisfactory April 21 to September 30; staff gage read to hundredths once daily November 1 to April 2 and twice daily for remainder of year. Daily discharge obtained by applying to rating table mean daily gage height obtained from staff reading or by inspecting recorder graph; also by shifting-control method or as noted in footnote to daily discharge table. Records good October to March; excellent April to September. COOPERATION. Gage-height record and 17 discharge measurements furnished ,. by North Side Canal Co. (Ltd.). The North Side" Twin Falls canal diverts water from the north side of Snake River at the Milner dam and furnishes water for stock and irrigation on about 240,000 acres of land in Jerome, Lincoln, and Gooding counties. The distribu tion system comprises about 100 miles of main canal and 625 miles of laterals. TRIBUTARY BASINS 153 Discharge measurements of^North Side Twin Falls canal fit Milner, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 30 T. R. Newell...... 8.66 3, 210 3.54 688 30 W. N. McConnel- ..... 8.71 3,180' Jan. 15 T.R. Newel) ...... 2.99 549 July 7 .....do...... 8.71 3,220 Feb. 22 McConnel and Oil- 12 ..do...... 7.95 2,880 ham 11 . . __ ...... 3.09 600 14 L. T. Burdick 8.01 2,900 Mar. 3 .....do...... 3.06 581 20 17 3.07 594 8.58 3,196 28 .....do'...... 4.40 1,070 20 do ... _. ~ 8.58 3,170 Apr. 29 W. N. McConnel ___ 6.39 2,010 26 L.T. Burdick ...... 8.56 3,070 May 3 ..do...... 7.01 2,250 26 McConnel and Bur 4 ..do...... 7.60 2,540 dick .. ._ _. . 8.56 3 nt;(l ..... do _ 7.79 2,670 28 W. N. McConnel .... 8.64 3,200 9 . .do.. . .56 38.7 29 12 8.58 3,200 8.16 2,840 Aug. 1 W. N. McConnel-. 8.56 3,190 12 Burdick6 and McCon 2 Burdick and Stocking. 8.52 3,050 nel ___ ...... 8.30 c2,750 2 13 W. N. McConnel...... 8.30 2,890 8.57 3,080 25 3 W. N. McConnel ...... 8.52 3,130 nel...... 8.30 2,840 4 , 25 .do...... 8.31 2,840 8.34 3,110 26 ..... do ...... 8.70 3,030 6 26 . do...... 8.71 3,090 8.18 2,890 26 McConnel and Stock 6 .....do ...... 8.20 2,870 ing 6 il.72 3,080 19 8.66 3,100 June 1 W. N. McConnel ...... !.25 2,850 19 do ...... 7.65 2,520 9 McConnel and Bur- 22 W. N. McConnel __ 7.65 2,67» dick. ______!.27 2,960 27 4.99 1,380 11 W. N. McConnel ..... i.37 3,090 31 5.42 1,600 16 .....do. !.49 3,120 do...... 6.83 2,220 20 McConnel and Bur? 8 L. T. Burdick ..._..... 6.54 2,010 i.67 3,120 10 W. N. MeConnel ..... 4.64 1, 210 20 ...-do...... _..___.. !.66 3,050 14 .do ...... 4.82 1,270 21 do. _ ...... i.69 3,140 27 ..do... 4.56 1,13ft Employees of Twin Falls Canal C o * Employees of North Side Canal Co . (Ltd.). « Discharge measurement evidently inaccurate. 154 SUEFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of North Side Twin. Falls canal at Milner, fdaht), for the year ending Sept. 80, Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1... _ . _ . 0 661 682 580 580 590 0 2,140 2,850 3,130 3,190 1,780 2.. __ . ___ . 0 668 674 567 580 597 412 2,200 2,590 3,000 3,060 2,360 3...... - 0 664 668 577 567 587 786 2,280 2,270 3,180 3,120 o ion 4. ___ .... _ . 0 671 767 587 551 *;on 804 2,470 2,120 3,190 3,130 2,230 5 _ .. ... 0 668 717 551 577 577 823 2,610 2,460 3,200 3,020 2,220 6 0 685 728 577 577 590 816 2,760 2,580 3,200 2,900 2,190 7 ...... 0 671 717 564 633 571 801 2,770 1,940 3,200 2,900 2,070 8- 393 644 724 574 590 594 742 2,770 863 3,080 2,900 2,010 9- - 927 654 731 551 577 587 688 2,210 2,980 2,940 2,880 1,420 10. ____ 1,220 657 710 558 t&O 685 1,630 3,000 2,870 2,860 1,250 11. _ ...... 987 633 696 617 574 587 827 2,800 3,000 2,860 1,420 1,270 12.. _ . __ .... 888 627 696 587 577 577 931 2,860 3,020 2,860 45 1,260 13 742 607 699 498 580 577 1,070 2,880 3,060 2,880 41 1,270 14...... 682 630 607 554 594 587 1,180 2,880 3,040 2,880 758 1,270 15- 674 623 835 558 t;S7 1,170 2,880 3,060 3,030 2,100 1,260 16.. __ .... _ . 703 703 671 554 607 577 1,180 2,880 3,070 3,040 2,780 1,290 17 735 699 671 577 590 584 1,190 2,900 3,080 5,960 3,020 1,290 18 717 685 692 580 580 571 1,260 2,900 3,080 2,940 2,620 1,300 10 710 717 617 587 587 577 1,380 2,880 3,140 2,960 2,830 1,270 20 713 728 558 594 590 587 1,500 2,880 3,160 3,090 2,830 1,240 21- _ 724 731 532 577 584 577 1,590 2,880 3,140 3,140 2,640 1,240 22 710 735 580 577 600 749 1,570 2,880 3,150 3,140 2,670 1,200 23 710 757 577 571 587 884 1,600 2,880 3,160 3,100 2,590 1,180 24...... 692 735 564 640 597 1,020 1,750 2,880 3,140 3,100 1,350 1,180 25- _ . . _ . 682 728 558 577 590 1,090 1 7Qfl 2,860 3,160 3,080 1,330 1,190 26 ...... 688 731 584 571 590 1,110 1,790 2,960 3,160 3,060 1,390 1,150 27 688 710 554 577 590 1,090 1,920 2,850 3,160 3,100 1,320 1,130 28 682 647 551 577 597 1,080 1,980 2.870 3,180 1,470 1,090 29 678 696 551 ' 580 624 2,010 2,870 3,160 3,200 1,610 1,110 30 674 696 551 577 0 2,140 2,880 3,150 3,200 1,610 1,040 31 661 551 587 0 2,880 3,200 1,610 NOTE. Canal reported dry Oct. 1-7, Mar. 30,31, and Apr. 1. Mean discharge used Oct. 8, Mar. 29, Apr. 2, May 9, 10, June 7, 8, Aug. 11, and 14. Monthly discharge of North Side Twin Falls canal at Milner, Idaho,, for the year ending Sept. 30,1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean October ______1,220 0 570 35,000 November- ______757 607 682 40,600 835 532 646 39,700 640 498 574 35,300 February..... _ . ______633 551 584 32,400 1,110 0 642 39,500 April ...... ____ ... __ . ___ . __ ...... 2,140 0 1,210 72,000 2,960 1,630 2,720 167,000 3,160 863 2,860 170,000 July _ .... ______..... _ ...... __ . 3,200 2,860 3,060 188,000 3,190 41 2,190 135,000 September ______, ______2,360 1,040 1,460 86,900 The year ______3,200 0 1,440 1, 040, 000 SOUTH SIDE TWIN FALLS CANAL AT MILNER, IDAHO LOCATION. In sec. 29, T. 10 S., R. 21 E., at wagon bridge one-eighth of a mile below head gates at Milner, in Twin Falls County. RECOBDS AVAILABLE. May 10, 1909, to September 30, 1921. TRIBUTARY BASINS 155 GAGE. Friez water-stage recorder at left bank, at site and datum of vertical staff gage installed early in summer of 1912; the latter has been used since that time for stages above 5.3 feet. Original gage was a vertical staff at tached to lower side of highway bridge 100 feet downstream; installed May 10, 1909; used for stages below 5.3 feet. The two gages read prac tically the same, although datum of upstream gage is 0.1 foot higher. Observer, W. N. McConnel. DISCHARGE MEASUREMENTS. Made from cable 50 feet above gage or by wading. CHANNEL AND CONTROL. Channel at gage blasted out of rock; practically permanent. Occasionally slight changes in control are due to deposition of silt. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 10.62 feet at noon June 19 (discharge, 3,640 second-feet); minimum stage recorded, 1.32 feet at 10 a. m. on March 13, waste gates open (discharge, 35 second- feet). 1909-1921: Maximum discharge, 4,600 second-feet August 12, 1918; minimum stage, 0.76 foot on September 20, 1920 (no flow). ICE. Stage-discharge relation seriously affected by ice. DIVERSIONS. None above gage and none of consequence for several miles below. REGULATION. Flow regulated by head gates. ACCURACY. Stage-discharge relation not permanent; affected by ice December 6 to February 19. Two well-defined rating curves used. Gage read twice daily to hundredths December 6-31 and May 24-28. Operation of water- stage recorder satisfactory for remainder of year. Daily discharge ascer tained by applying to rating table mean daily gage height obtained by inspection of recorder graph or from staff gage readings, except as noted in footnote to daily discharge table. Records excellent except December to February, for which they are good. COOPERATION. Gage-height record and 26 discharge measurements furnished by Twin Falls Canal Co. South Side Twin Falls canal diverts water from south side of Snake River at the Milner dam and furnishes water for stock and irrigation on about 200,000 acres of land near Twin Falls. The distribution system comprises about 110 miles of main canal and 590 miles of laterals. Discharge measurements of South Side Twin Falls canal at Milner, Idaho, during the year ending Sept. 80, 1921 Gage Dis- Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Dec. 1 McConnel » and Cams <* 4.01 567 -June 8 W. N. McConnel __ .. 9.28 2,620 Jan. 15 T.R. Newell ..... 64.65 588 11 -....do...... 10.30 3,440 Feb. 22 W. N. McConnel _ ... 3.76 511 16 ..... do...... 10.35 3,470 Mar, 3 3.97 579 20 do 10. 53 3,610 15 McConnel and Carns-. el. 3? 35.9 22 Newell and McConnel. 10.28 3,430 16 McConnel and Gilham 5.06 910 July 6 W. N. McConnel ...... 10.58 3,600 17 4.52 750 14 ..do _..--_...... 10.48 3,660 Apr. 18 W. N. McConnel-.- 5.19 989 22 ..... do ...... 10.55 3,550 30 do. . .. 8.90 2,660 28 .....do...-...... 10.57 3,590 ..do...... 7.52 1,960 Aug. 1 .... . do ...... 10.42 3,550 . __ do...... 9.52 3,090 22 ..... do. -....- 9.54 3,000 12 O. C. Baldwin. __ . ... 9.66 3,100 31 --.-.dO...-...... 9.55 3,020 13 W. N. McConnel _ ... 10.18 3,500 Sept. 14 . __ do...... 8.98 2,660 - .do...... _ .. 6.46 1,3W ! 24 ... ..do.,., 7.10; L730 7 .....do...... 8.19 2,090 o Employees Twin Falls Canal Co. * Stage-discharge relation affected by ice. Stage-discharge relation affected by open waste gates. 14234 26 11 156 STJBFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of South Side Twin Falls canal at Milner, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 2,060 914 577 577 762 2,200 1,540 3,530 3,490 3,010 2. ______2,060 9T4 548 577 778 2,040 1,460 3,430 3,370 2,990 3 2,040 677 506 500 562 778 1,920 1,450 3,560 3,350 2,980 4...... 2,060 400 492 577 862 2,040 1,590 3,560 3,340 3,000 6...... 2,060 400 577 577 931 2,600 1,650 3,560 3,340 2,990 6...... 2,060 400 577 931 2,890 1,770 3,560 3,350 2,950 1...... 2,060 400 577 896 3,040 2,110 3,550 3,340 2,790 8...... 1,970 400 > 588 605 562 948 3,070 2,210 3,560 3,360 2,790 9 ______1,820 400 465 914 3,040 2,640 3,530 3,340 2,680 10- ______1,660 400 327 931 3,040 3,210 3,530 3,300 2,690 600 11 1,600 388 636 931 3,100 3,430 3,530 3,210 2,680 12 _____ . .... 1,600 636 534 1,060 3,160 3,260 3,530 3,160 2,680 13...... 1,600 846 520 59 1,110 3,340 3,270 3,540 3,150 2,690 14- ____ . .... 1,620 796 52 1,130 3,460 3,320 3,560 3,140 2,660 15-... ___ 1,600 730 588 655 1,090 3,500 3,420 3,580 3,050 2,570 16.. ____ - __ 1,390 746 ouu 828 1,040 3,460 3,480 3,610 3,060 2,600 17 , 1,330 746 667 966 3,220 3,480 3,590 3,160 2,490 18 1,310 698 577 966 2,950 3,480 3,590 3,030 2,060 19- ...... 1,310 621 592 1,020 2,630 3,610 3,590 3,020 898 20- ____ - 1,310 621 506 592 1,090 1,270 3,510 3,600 3,000 2,520 21 1,330 677 588 520 506 1,130 845 3,430 3,610 3,010 2,330 22 ...... 1,290 634 548 465 1,230 1,760 3,430 3,600 2,990 2,110 23 1,090 562 577 478 1,290 2,440 3,440 3,590 2,990 1,830 24.. _____ . ... 1,040 592 588 577 465 1,270 1,470 3,430 3,610 3,000 1,740 25...... 1,040 592 577 492 1,290 1,150 3,480 3,590 3,000 1,720 26.. ___ ...... 1,040 592 577 548 1,290 2,200 3,510 3,600 2,990 1,730 27...... 984 606 577 636 1,330 2,860 3,510 3,590 3,000 1,780 28. 914 592 577 730 1,780 2,600 3,500 3,600 3,000 1,820 29- _____ - _ - 931 592 540 778 2,440 1,690 3,510 3,510 2,990 1,820 80 ...... 931 592 762 2,410 1,690 3,540 3,490 2,990 1,980 31 914 762 1,710 3,510 3,000 NOTE. Stage-discharge relation affected by ice Dec. 6 to Feb. 18; mean discharge estimated-for periods as shown above on basis of one discharge measurement, study of weather records, and observer's notes on head-gate changes and ice conditions. Waste gates open Mar. 13-15; daily discharg eestimated. Mean dis charge Sept. 18 and 19 determined from hourly discharge. Monthly discharge of South Side Twin Falls canal at Milner, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Month Run-off in acre-feet Maximum Minimum Mean 2,060 914 1,480 91,000 914 388 595 35,400 492 584 35,900 580 35,700 541 30,000 828 52 555 34,100 April ...... 2,440 762 1,150 68,400 3,500 845 2,460 151,000 3,610 1,450 2,960 176,000 July ... __ . . ... __ ...... __ .. _ ..... 3,610 3,430 3,560 219,000 August.... _ . _ . ______. ... §,490 2,990 3,150 194,000 September ______..... ______3,010 898 2,390 142,000 The year ______3,610 52 1,670 1,210,000 BLUE LAKES OUTLET NEAR TWIN FALLS, IDAHO LOCATION. In SW. ^ SW. ^ sec. 28, T. 9 S., R. 17 E., Jerome County, 200 feet below highway bridge at Blue Lakes ranch, a short .distance above junction with Snake River, and 4 miles north of Twin Falls, Twin Falls County. DKAINAQE AKEA. Not measured. TRIBUTARY BASINS 157 RECORDS AVAILABLE. May 20, 1917, to December 25, 1920, when records were discontinued. GAGE. Vertical staff installed January 27, 1920, on right bank, 200 feet below highway bridge. Prior to this time a vertical staff, presumably at same site and datum, was used. Gage read by E. F. Myers, May 20, 1917, to August 21, 1920, and by B. B. Squier September 8 to December 25, 1920. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading in two channels at the mouth. CHANNEL AND CONTROL. Bed composed of rock and boulders. Considerable aquatic growth at times forms in lower channel near mouth. EXTREMES OF DISCHARGE. Maximum stage recorded during period May 20 to September 30, 1917, 0.88 foot September 7-30 (discharge, 205 second-feet); minimum stage, 0.84 foot June 14 to August 4 (discharge, 185 second-feet). Maximum stage recorded during year ending September 30, 1918, 0.90 foot October 21-31 (discharge, 220 second-feet); minimum stage, 0.78 foot March 4 to May 2 (discharge, 200 second-feet). Maximum stage recorded during year ending September 30, 1919, 0.95 foot October 26 to November 17 (discharge, 222 second-feet); minimum stage, 0.88 foot September 23-30 (discharge, 193 second-feet). Maximum stage recorded during year ending September 30, 1920, 0.90 foot September 29 and 30 (discharge, 228 second-feet); minimum stage, 0.89 foot November 4-30 (discharge, 185 second-feet). Maximum stage recorded during period October 1 to December 25, 1920, 0.91 foot October 22 to November 1 (discharge, 230 second-feet); minimum stage, 0.84 foot December 16-25 (discharge, 190 second-feet). 1917-1920: Maximum stage recorded, 0.91 foot October 22 to November 1, 1920 (discharge, 230 second-feet); minimum stage, 0.84 foot June 14 to August 4, 1917 (discharge, 185 second-feet). A discharge of 185 second- feet also occurred November 4-30, 1919. ICE. None. DIVERSIONS. About 2 second-feet diverted above gage and one diversion from right bank 150 feet below gage. REGULATION. None. REeoRDs.-*-Records as published include flow in diversion below gage. COOPERATION. Most of discharge measurements and all records furnished by Twin Falls North Side Land & Water Co. Monthly summary only, computed by United States Geological Survey engineers. 158 SURFACE WATER SUPPLY, 1921, PART XII B Discharge measurements of Blue Lakes outlet near Twin Falls, Idaho, during the years ending Sept. 30, 1913-1921 Gage Dis Gage Dis Date Made by . height charge Date Made by height charge 1913 Feet Sec.-ft. 1919 Feet Sec-it. Sept. 7 L.W.Jordan...... ol91 July 27 0.90 *202 Sept. 18 Burdick and Jensen ... .90 *204 1914 L. T. Burdick .... .88 "»185 Aug. 6 L. W. Roush __ ...... 6199 T? 1920 1917 Feb. 4 Burdick and Jensen ... .78 »196 Sept. 7 0.88 <*205 Apr. 26 .78 o!92 dalle June 10 do ...... 80 J>187 Oct. 26 L. T. Burdick...... 91 «220 July 20 .84 ?187 Aug. 8 L. L. Bryan, ...... 86 '194 1918 Sept. 8 Gonover c and Burdick. .86 *213 Apr. 26 Howard « and Crandall .78 /200 Oct. 7 Carter c and Crandall- - .92 9218 1921 Mar. 30 FiedJae and Paulsen ... .81 U92 1919 July 25 Berkeley Johnson ...... 86 *I98 Apr. 19 Jensen e and Crandall,. .82 ft 196 Aug. 12 do...... 88 *190 July 2 L. T. Burdick...... 88 <209 Sept. 19 . __ do. ______... on two 12 John McCombs ...... 89 3192 a Includes 8 second-feet measured flow in diversion below gage. & Measured at bridge above gage; amount diverted below not known. c Employees of Twin Palls North Side Land & Water Co. *^Includes 75 second-feet estimated flow in diversion and in west channel. «Includes 77 second-feet estimated flow in diversion and in west channel. /Includes 64 second-feet estimated flow in-diversion and in west channel. 9 Includes 78 second-feet estimated flow in diversion and in west channel, ft Includes 72 second-feet estimated flow in diversion and in west channel. * Includes 69 second-feet estimated flow in diversion and in west channel. ^Estimated 18 second-feet additional in diversion. * Estimated 9 second-feet additional in diversion. ' Includes 72 second-feet estimated flow in diversion and in west channel. m Includes 64 second-feet estimated flow in diversion and in west channel. »Includes diversion; amount diverted not known. o Estimated 2 second-feet additional in diversion. p Estimated 11 second-feet additional in diversion. 9 Estimated 19 second-feet additional in diversion. r Estimated 12 second-feet additional in diversion. * Estimated 5 second-feet additional in diversion. t Does nottaclude amount diverted. Daily discharge, in second-feet, of Blue Lakes outlet near Twin Falls, Idaho, for the period May 20, 1917, to Dec. 25,1920 Day May June July Aug. Sept. Day May June July Aug. Sept. 1917 1917 1 ______190 185 1 185 195 16...... 185 185 190 205 2...... 190 185 185 1QH 17...... 185 185 195 205 3 ..... 190 185 185 195 18...... 185 185 195 205 4 ______190 185 185 200 19 185 185 195 205 5 ...... 190 185 190 200 20 190 185 185 195 205 6...... 190 185 190 200 21 ...... 190 185 185 195 205 7... _ ...... 190 185 190 205 22...... 190 185 185 195 205 8...... 190 185 ion 205 23...... 190 185 185 195 205 9...... 190 185 190 205 24 ...... 190 185 185 195 205 10 ...... 190 185 190 205 25 ...... 190 185 185 195 205 11 ...... 190 185 190 205 26 ...... 190 185 185 195 205 12 ...... 190 185 190 205 27..... ___ .. 190 185 185 195 205 13 ...... 190 185 190 205 28 ____ . 190 185 185 195 205 14 ...... 185 185 190 205 29 ...... 190 185 185 195 205 15 _____ ... 185 185 190 205 30.... ___ .. 190 185 185 195 205 31 ...... 190 185 195 TRIBUTARY BASINS 159 Daily discharge, in second-feet, of Blue Lakes outlet near Twin Falls, Idaho, for the period May 20, 191?, to Dec. M, 1920 Continued Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1917-18 1 ______.. 205 218 218 212 205 OAO 200 200 OAK 207 91ft 215 2. 210 218 218 212 205 202 - 9ftA 200 OAK 207 Oln 215 3.. __ ...... 210 218 218 212 205 202 200 OftK 207 210 215 4 ______. 210 218 215 210 205 ' 200 200 205 207 919 215 5..._..... - - 210 218 215 91 ft 205 200 200 ono 205 nevj 919 215 6 210 218 215 210 9AK 200 200 202 205 9JY7 919 O1 R 7 ______. 210 218 215 - 91ft 205 200 200 203 205 9A7 O1 K 8- __ . ... 210 218 215 210 205 203 205 207 2£2 215 g __ ... 210 218 215 210 9n4. 200 200 203 205 207 212 215 10 ______- 210 91ft 215 91 A 204 200 200 203 205 207 919 O1 K 11 215 218 215 210 204 200 200 203 205 207 212 215 12 ______.. 215 91 Q 215 91 A 9/U 9/tn 200 203 205 207 919 215 13.... __ ...... 215 218 215 210 204 200 200 203 205 207 91 0 215 14 ___ 215 218 215 208 204 200 200 203 205 207 212 215 15 ___ - 215 . 918 215 208 202 200 200 9fl3 205 210 919 215 16. . 215 218 215 208 202 200 200, 203 205 910 212 218 17...... 215 O1 ft . 215 208 202. 200 200 205 91 A 919 rjrtft 18 - 215 O1 ft 215 ono 9fi9 200 200 OAQ 207 91ft 91 9 91 c 10 215 O1 ft 215 OAQ Qft9 200 200 203 207 91ft 212 91 fi 20 __ - 215 O1 Q O1 K 208 202 200 5!ftft OAQ 207 91ft 919 91 Q 21 ___ ... - 220 218 215 207 202 200 200 203 207 210 212 910 22 ___ ...... 220 218 215 207 202 200 200 203 207 210 212 91ft 23 220 91 Q 91 *% 207 202 200 200 203 207 91ft 919 O1 ft 24 ______- 220 91 Q 215 9ft7 202 200 200 203 907 210 212 91 fi 25 ______220 91 Q 215 207 202 200 200 203 207 210 215 91ft 26 ______220 91 ft 215 207 202 200 200 203 207 210 215 91 Q 27 ______- 220 91ft 215 207 202 200 200 203 207 210 91 Q 98 220 ' 91 fi 215 207 202 200 200 203 207 91A 215 91 Q 29 ______- 220 91 Q " 215 207 200 200 203 207 91 A 215 91 fi 30 220 91 Q 919 207 200 200 203 207 . 210 215 91 Q 31 ______220 212 207 200 203 210 215 1918-19 1 __ - 218 222 220 213 202 198 197 108 205 210 210 208 218 222 91 Q 213 Ofi9 Ida 198 205 210 210 208 3 218 222 219 213 202 197 197 198 205 210 210 OAQ 4.. __ - 91ft 999 219 9TQ 202 197 197 206 91 A 91 A 9AQ 5...... 218 91G 211 202 197 VO7 1QR 206 210 210 208 6 218 999 91 Q 911 202 197 197 IQft 20ft 210 210 208 7- _____ ... 218 222 91 Q 911 202 197 196 IQft 206 210 211 204 8. ___ ...... 218 222 219 211 202 1Q7 196 198 20ft 210 211 204 9 ...... 2l8 222 219 211 200 197 196 198 206 210 211 204 10- __ ...... 218 222 219 208 200 197 196 198 206 210 211 204 11.. __ . _ .... 218 222 210 208 200 197 196 198 208 210- 211 204 12...... -. 218 222 218 208 200 197 196 198 208 210 211 204 13 - 218 999 91R 208 200 197 196 200 208 210 210 204 14- _____ ... 218 222 218 208 200 197 196 200 208 210 210 204 15 . - 218 222 91 S 206 200 197 196 200 208 210 210 204 16 ______- 218 222 218 206 200 197 196 200 208 211 210 204 17 218 222 218 206 200 197 196 200 208 211 210 204 18 - 220 220 218 206 198 197 196 200 209 211 210 204 19...... 220 220 218 206 198 196 200 209 211 210 204 20 ...... 220 220 218 206 198 197 196. 200 209 211 210 204 21...... 220 220 218 206 198 197 196 200 209 211 210 204 22 220 220 218 206 198 197 196 201 209 211 209 204 23- ____ .... 220 220 218 206 198 197 196 201 209 211 209 193 24...... 220 220 218 204 198 197 196 201 209 211 209 193 25 220 220 218 204 198 196 201 209 211 209 193 204' 26 222 220 218 198 197 196 201 210 211 209 193 27. __ ...... 222 220 218 204 198 197 196 201 210 211 208 193 28- ...... 222 220 218 204 198 197 196 203 210 211 208 193 29- ...... 222 220 218 204 197 196 203 210 211 208 193 30.:. ___ ...... 222 220 213 204 197 198 205 210 211 208 193 31...... 222 213 202 197 205 211 208 160 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Blue Lakes outlet near Twin Fatts, Idaho, for the period May 20, 1917, to Dec. 25, 1920 Continued Day Oct. ISToy. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1919-20 1. ____ ..... 192 187 187 ion 196 191 194 194 1QA 202 206 2 ______.. 192 18fi 187 190 196 191 194 194 196 202 206 3...... 192 18fi 187 190 196 191 194 194 196 204 206 4 ______.. 192 185 187 190 1§6 191 104 194 196 204 206 5 ___ .... 192 185 187 190 196 191 194 194 10ft 204 206 6.... ____ ., 192 185 187 190 196 191 194 194 196 204 206 7 . 192 185 187 190 196 191 194 194 196 204 206 8 ______. 191 185 187 190 196 191 194 194 198 204 206 218 9 ___ .. 191 185 187 190 196 191 194 194 198 206 206 218 10 _____ ...... 191 185 187 190 196 194 194 194 198 206 206 218 11 _____ . _ . 191 185 187 190 196 194 194 194 198 206 206 218 12 ____ ... 191 185 187 190 191 194 194 194 198 206 206 218 13 ... 191 185 187 190 191 194 194 194 198 206 206 218 14 ___ . ___ .. 191 185 187 190 191 194 194 194 200 206 206 218 15. ___ . __ .. 191 185 187 190 191 194 194 194 200 206 206 218 16 ..... 190 185 187 196 191 194 194 194 200 206 206 218 17 ______.. 190 185 190 196 191 194 194 1Q4 200 206 206 218 18 ______.. 190 185 190 196 191 194 194 194 200 206 212 218 19 _ 190 185 190 196 191 194 194 194 200 206 212 218 20 _____ . _ . 190 185 190 . 196 191 194 194 196 200 206 212 218 21 __ . ____ .. 190 185 190 196 191 194 194 196 200 206 212 224 22 190 185 190 196 191 194 194 196 200 206 224 23...... 189 185 190 196 191 194 194 196 200 206 224 24...... 189 185 190 196 191 194 194 196 200 206 224 25...... 189 185 190 196 191 194 194 196 200 206 224 26...... 189 185 190 196 191 194 194 196 202 206 214 224 27...... 188 185 190 196 191 194 194 196 202 206 224 28 ______. 188 185 190 196 191 194 194 196 202 206 224 29...... 188 185 190 196 191 194 194 196 202 206 228 30... __ ...... 188 185 190 196 194 194 196 202 206 228 31 ______. 187 190 196 194 196 206 Day Ocl . Noi/. De B. Day Oct. Nov. Dec. Day Oct. Nov. Dec. 1920 1920 1 920 1...... 25!8 2;!0 2f)6 11 . 228 224 200 21.. 228 212 190 2 _____ 25!8 25W 2f)6 12 . 228 224 195 22.. 230 212 190 3 ...... 25 8 25W V*M5 13 . 228 224 195 23.. 230 212 190 4-.- 25'8 25>4 2f)0 14 . 228 218 195 24.. 230 212 190 6...... 25>8 25"4 2f10 15 . 228 218 195 25.. 230 212 190 6...... 25 8 25>4 2f» 16 . 228 218 190 26.. 230 212 7...... 25!8 25'A 2f10 17 . 228 218 190 27.. 230 212 8...... 25& 25'4 2fK) 18 228 218 190 28.. 230 212 9...... 25!8 25'A K10 19. . 228 218 190 29.. 230 212 10...... 25,8 25'4 W10 20. 228 218 190 30.. 230 206 31.. 230 NOTE, Braced figures show estimated mean discharge for periods indicated. TRIBUTARY BASINS 161 Monthly discharge of Blue Lakes outlet near Twin Fatts, Idaho, for the period May 20, 1917, to Dec. 25, 1920 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 1917 May 20-31 ...... __ . __ . __ . __ .. ... ____ . 190 190 190 4,520 June. ______, ______190 185 187 11,100 July ... __ .-I...... 185 185 185 11,400 195 185 192 11,800 September _ ...... 205 195 204 12, 100 The period 50,900 1917-18 220 205 215 13,200 218 218 218 13,000 218 212 215 13,200 212 207 209 12,900 205 202 203 11,300 202 200 200 12,300 April ...... _...... 200 200 200 11,900 May.. _ . _ . _ . . . 203 200 203 12, 600 June . . ______, _ . 207 205 206 12,300 210 207 209 12,900 215 210 212 13,000 218 215 216 12,900 The year ...... 220 200 209 151,000 1918-19 222 218 219 13,500 222 220 221 13,200 220 213 218 13,400 213 202 207 12, 700 202 198 200 11,100 198 197 197 12,100 April.. _.._,.._ ._..__ _..______...._,___._. _. ._.._ 198 196 196 11,700 205 198 200 12,300 210 205 208 12,400 July...... 211 210 211 13,000 211 208 210 12,900 208 193 202 12,000 The year...... 222 193 207 150,000 1919-20 October ...... 192 187 190 11,700 November ______.... ____ .... ____ ...... 187 185 185 11,000 190 187 188 11,600 196 190 193 11,900 196 191 193 11,100 194 191 193 11,900 April...... _ ...... __ ...... 194 194 194 11,500 196 194 195 12, 000 June ______J ...... 202 196 199 11,800 July...... 206 202 205 12,600 August ______. ______...... 206 209 12,900 228 220 13,100 228 185 197 143,000 1920 October...:. ______...... 230 228 229 14,100 November.. ___ ...... 230 206 219 13,000 206 190 196 9,720 36,800 162 SURFACE WATER SUPPLY, 1921, PART XII B CLEAR LAKES OUTLET NEAR BUHL, IDAHO LOCATION. In sec. 2, T. 9 S., R. 14 E., Gooding County, at Clear Lakes ranch, 50 feet below Clear Lakes, one-fourth mile above junction with Snake River, three-fourths mile west of Buhl-Wendell highway bridge across Snake River, and 5 miles north of Buhl, Twin Falls County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. June 6, 1917, to November 27, 1920, when records were discontinued. GAGE. Vertical staff in wooden stilling well on left bank. Read by Mrs. M. E. Syster. DISCHARGE MEASUREMENTS. Made by boat at section near mouth. CHANNEL AND CONTROL. Bed composed of rock and gravel. Channel at times affected by aquatic growth. Control formed by well-defined rock riffle. EXTREMES OF DISCHARGE. Maximum stage recorded during period June 6 to September 30, 1917, 1.40 feet September 22, 27, and 28 (discharge, 539 second-feet); minimum stage, 1.10 feet June 12 (discharge, 480 second-feet). Maximum stage recorded during year ending September 30, 1918, 1.42 feet November 14 and 15 (discharge, 544 second-feet); minimum stage, f.08 feet May 2 (discharge, 454 second-feet). Maximum stage recorded during year ending September 30, 1919, 1.48 feet October 25 (discharge, 525 second-feet); minimum stage, 1.12 feet May 24-27 (discharge, 465 second-feet). Maximum stage recorded during year ending September 30, 1920, 1.24 feet October 12-15 (discharge, 500 second-feet); minimum stage, 1.10 feet July 16, 18, and 19 (discharge, 460 second-feet). Maximum stage recorded during period October 1 to November 27,1920, 1.28 feet October 31, November 1, 3, 9, 10, and 27 (discharge, 490 second- feet); minimum stage, 1.18 feet on numerous days in October (discharge, 473 second-feet). 1917-1920: Maximum stage recorded, 1.42 feet November 14, 15, 1917 (discharge, 544 second-feet); minimum stage, 1.08 feet May 2, 1918 (dis charge, 454 second-feet). ICE. None. DIVERSIONS. Several small diversions for irrigation above. REGULATION. None.. COOPERATION. All records furnished by Twin Falls North Side Land & Water Co. Monthly summary computed-by United States Geological Survey engineers. Discharge measurements of Clear Lakes outlet near Buhl, Idaho, during the years 1917-1920 Gage Dis Gage Dis Date Made by height charge Date Made by height charge 1917 Feet Sec.-ft. 1919 Feet 8ec.-ft. Sept. 13 Burdick and Crandall. 1.30 0523 Sept. 12 Burdick and Jensen.... 1.13 6542 19 __ .do ...... 1.14 a480 1918 Apr. 28 Howard and CrandalL 1.09 457 1920 Oct. 8 Crandall and Carter _ 1.40 510 Aug. 5 Johnson and Brewer ... 1.23 0479 "Includes 4 second-feet diverted above. 6 Measurement evidently not accurately made. e Excluding diversions. NOTE. All measurements made by employees of Twin Falls North Side Land & Water Co. TRIBUTARY BASINS 163 discharge, in second-feet, of Clear Lakes outlet near Buhl, Idaho, for the period June 6, 1917, to Nov. 27, 1920 Day Junt> July Atlg. £>ept. ])ay June July Aug. Sept. 1917 1 917 1... ______4S3 492 532 16 .... 490 492 507 527 2 4*3 498 518 17.... 488 492 531 519 3 4SS 503 505 18 .... 487 492 507 525 4 _____ . __ 483 603 523 19 .... 485 490 519 523 5 483 500 530 20.... 492 487 519 .523 6 483 487 496 523 I 21 .... 487 487 515 535 7...... __ . 48.5 490 51* 521 22 .... 483 492 524 539 8.. __ ..... 48fi 488 498 519 23 493 492 507 535 9... __ ...... 487 4^87 513 527 24 .... 492 496 523 532 10 ...... 48« 487 523 523 25 ..... 490 483 524 527 11 ...... 482 483 515 527 26 .... 492 490 525 519 12..... __ ..... 480 A«7 507 527 27 .... 492 492 517 539 13 482 4«7 615 523 28. 493 496 523 539 14 __ ...... 48& 496 SI 9 523 29 492 494 528 637 16--...... 49% 494 515 527 30 __ 483 492 530 535 31 .... 498 532 Day Oct. *Jov. Dec. Jai1. Feb. Mar.' Apr. May Juile Julj Aog. Sept. 1917-18 1 __ ...... 532 535 W4 515 488 458 476 459 476 47R 494 510 2...... 523 535 524 510 488 464 476 454 4 156 48^ 494 514 3 ____ ...... 532 535 524 5 D3 494 482 473 459 476 48.1 494 614 4..... ____ .. 539 540 527 5 13 494 482 476 458 476 487 494 617 5 __ .. ___ .. 539 540 R27 517 488 464 476 462 473 481 494 514 6...... 539 535 527 512 494 464 476 462 476 481 494 520 7 539 535 SKO 5 12 4.04 468 473 462 476 481 494 617 8 __ ...... 539 540 5?0 5 ?0 494 470 476 462 4 76 487 494 517 9 __ ...... 539 540 R24 5DO 488 470 475 459 474 48T 497 517 10.. ___ ...... 539 540 527 5 10 488 470 476 459 41^9 48"7 497 517 11- 539 540 520 5 TO 488 476 476 462 41W 48t 617 12...... 539 540 520 5 10 48R 470 476 462 473 481 497 617 13. 539 540 524 511 488 478 476 462 474 487 497 617 14. _ . __ . .... 535 fi44 532 5 13 488 470 476 dA9 476 487 497 517 16 , 532 fi44 W2 5 13 AQQ 473 476 462 4W 487 .497 522 16...... 527 540 W8 5 17 488 476 476 462 476 48t 497 515 17 ...... 539 535 RIM Ft17 480 476 476 466 476 48* 500 522 18 539 540 532 »13 458 476 476 466 4 21...... : .... 535 535 K94 5 14 AQf> 4fiS 476 470 4W 481 500 522 22 535 540 WO W 470 464 476 Aftn 4S3 487 500 518 23 539 540 520 4 M 4>aj 459 473 469 476 4O|f) 500 518 24 539 540 524 4 14 464 4RO 473 469 4 76 491n 497 516 25 *SQ >un 527 A W 470 464 476 469 476 49n 605 522 26...... _ . 539 53fi 527 4 W 482 464 476 473 476 4910 507 522 27 __ 539 535 527 A W AQQ 464 476 4.7$ 41W 49in 807 522 28 539 540 WO 4 <7 464 466 458 473 433 491n 507 525 29...... 535 535 520 4)S7 466 459 473 433 49+ 509 522 30 .... 539 m 515 4S7 469 4KQ 476 )4iS3 40.+ 515 622 31 539 M5 4 W 476 476 49+ 507 1918-19 1__ ...... 522 510 194 4 *3 4S7 487 467 472 470 4810 487 498 2 522 514 +94 4)S3 487 485 467 472 475 481i 487 492 3- ___ ...... 518 510 +94 4W 487 483 470 472 478 481D 489 487 4 518 510 +94 4 W 487 480 470 476 474 AfU0 4Q1 484 5...... 515 510 ion 4 SO 487 4sn 467 476 478 48.B 4Q1 484 6 ____ , ..... 515 510 190 4BO 487 480 470 475 4,50 48 5 491 480 7 .. 515 507 490 4 $3 483 473 466 476 4 30 485 491 477 8-.I.I __ . 514 fi07 +90 4 SO 487 473 466 476 478 485 495 477 9.. __ . ____ 518 507 +90 4 SO 487 473 466 475 478 4R5 495 477 10 __ ...... 518 504- +94 4!HO 487 473 Daily discharge, in second-feet, of Clear Lakes outlet near Buhl, Idaho, for the period June 6, 1917, to Nov. 27, 1920 Continued Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June Julj7 Aug. Sept. 1918-19 16...... 514 500 487 476 483 475 473 470 480 47 i 498 484 17.. ____ .... 510 498 «4 480 487 472 476 470 480 47 i 498 486 18- ___ ...... 518 407 187 480 487 472 476 465 478 47 i 498 487 10 518 498 187 480 487 470 476 465 477 47 498 482 20_ ...... 514 500 187 483 490 472 476 465 477 47 7 498 487 21- ...... 514 500 J87 483 490 477 476 465 476 47 7 498 487 22- ____ .... 518 500 ion 480 490 477 1 476 470 476 47 7 498 487 23... ___ ..... 522 500 ion 48D 490 477 473 465 476 48!1 498 487 24...... 522 497 187 483 483 473 474 465 476 481) 498 487 25...... 525 494 187 483 483 473 476 465 476 48 1 498 487 26...... 522 404 187 483 487 475 476 465 476 48(1 498 492 27- ___ ...... 518 494 187 483 487 477 476 465 476 4811 498 492 28... __ ...... 518 407 187 483 487 477 476 465 476 48(1 498 492 29...... 514 407 IQO 483 477 476 468 476 48(1 498 492 30.... ____ .. 514 407 183 483 467 476 468 480 48,i 498 492 31- ...... 515 183 483 470 468 48 7 491 1919-20 1...... 492 492 177 484 490 486 468 473 464 46 <\ 473 484 2 ______. ... 409 492 177 484 490 484 468 473 468 46 1 473 476 3...... 492 492 177 484 490 484 470 473 470 4fi 1 474 473 4...... 487 494 177 484 490 482 470 476 466 46 1 476 470 5...... 492 409 177 484 490 482 468 476 468 46!* 476 470 6- ______. 487 490 177 484 488 482 470 476 473 471 476 466 7- __ ...... 492 489 173 484 486 473 466 476 470 47 1 476 463 8...... 492 488 178 484 490 473 466 476 470 47 1 482 463 9...... 487 487 173 484 490 473 466 476 470 47 1 482 463 10- ...... 487 487 i172 484 494 473 466 476 470 47 1 484 463 11 ______. ... 492 487 179, 484 494 473 476 484 468 46(I 484 463 12.... ____ .. 500 484 172 484 490 476 476 476 466 46 * 484 463 13..... __ .... 500 484 172 484 490 476 476 474 466 46.* 484 463 14- ...... 500 484 m 4Sfi 488 476 473 473 470 46,* 484 466 15...... 500 484 172 487 486 476 476 473 470 46.* 484 466 16- ...... 492 484 im 487 486 474 473 470 470 4611 484 468 17-.. _____ . 492 484 i176 487 486 473 474 470 470 46 1 484 468 18...... 492 484 176 494 486 473 476 466 468 46() 484 468 19...... 492 484 m 494 48fi 473 476 466 466 46<) 484 473 20...... 492 484 m 496 494 473 476 466 466 46 } 484 473 21, ...... 40fi 484 178 496 404 476 476 466 463 46 } 484 473 22. ______... 492 484 180 494 494 476 476 470 463 46 I 484 473 23-.. ___ .... 492 480 176 494 488 476 473 466 463 46 1 484 473 24. _____ . ... 492 480 i180 496 482 473 474 463 463 46 1 484 473 25...... 487 48n 180 496 482 473 476 463 463 46 1 476 473 26...... 487 480 WO 496 486 474 476 463 463 4«M=5 476 476 27...... 492 480 iW4 496 486 476 476 463 . 463 46(1 476 476 28- ____ ..... 487 480 Iiso 496 486 476 476 464 463 4fi 1 484 476 29...... 487 492 I184 496 486 476 476 466 463 46 1 484 476 30.. ______. 492 477 i184 496 466 476 466 464 47 1 484 476 31- ____ .... 4Q9 i184 496 470 466 47 } 476 Day Oct Nov Day Oct. Nov. Day Oct. Nov. 1920 1920 1920 1 __ ...... 476 490 11 476 488 21. 482 484 2 ...... 476 4on 12 484 488 22. 476 485 3 ...... 476 490 13 484 484 23, 476 486 4 ...... 4Oft 14 484 484 1 24 476 486 5 __ ...... 476 486 15 484 484 25. 473 486 6 ...... 473 486 16 476 484 26. 473 486 7 ...... 476 4*6 17 476 484 27. 476 490 8 ...... 476 4 Oft 18 476 484 28 473 9 __ ...... 473 490 19 476 484 29. 473 10 __ ...... 473 4nn 20 476 484 30. 476 . 31. 490 TEIBUTAEX BASINS 165 Monthly discharge of Clear Lakes outlet near Buhl, Idaho, for the period June 6,1917, to Nov. 27, 1920 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 1917 493 480 487 24,100 July...... 498 483 489 30,100 632 492 514 31,600 539 505 527 31,400 The period ... 117,000 1917-18 639 523 537 33,000 November..... _____ ... ______...... 544 524 638 32,000 532 515 524 32,200 January , . 520 487 600 30,700 February ______494 458 482 26,800 "WftTPll 482 458 469 28,800 April ...... 476 458 474 28; 200 476 454 466 28,700 483 466 477 28,400 July ___ . \_ __ ...... 494 476 486 29,900 515 494 499 30,700 525 510 519 30,900 The year ______544 454 498 360,000 1918-19 525 510 517 31,800 514 494 502 29,900 494 483 489 30,100 483 476 481 29,600 490 483 487 27,000 487 467 476 29,300 April...... 476 466 473 28,100 483 465 471 29,000 480 470 477 28,400 July...... 487 474 480 29,500 498 487 496 30,500 498 477 485 28,900 The year ___ __ :...... 525 465 486 352,000 1919-20 600 487 492 30,300 494 477 485 28,900 484 472 477 29,300 496 484 490 30,100 494 482 489 28,100 486 466 476 29,300 April..... __ ... ___ .... ___ ..... __ ...... 476 466 473 28,100 484 463 470 28,900 473 463 467 27,800 July...... 473 460 466 28,700 484 473 481 29,600 September ...... 484 463 470 28,000 ' The year ______... .. 600 460 478 347,000 1920 490 473 477 29,300 November 1-27 ______. ___ ...... __ ...... 490 484 486 26,000 55,300 166 SURFACE WATER SUPPLY, 1921, PART XII B SALMON FALLS CREEK NEAR SAN JACINTO, NEV. ' LOCATION. In sec. 23, T. '47 N., R. 64 E., in canyon 200 yards below county highway bridge, 250 yards below mouth of Shoshone Creek, and 5 miles north of San Jacinto, Elko County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. September 17, 1909, to September 30, 1916, and October 1, 1918, to September 30, 1921. GAGE. Barrett and Lawrence water-stage recorder installed on right bank No vember 20, 1911; inspected by employees of Salmon River Canal Co. Origi nal gage used prior to June 30, 1910, was a vertical staff on right bank a short distance upstream and at different datum. July 1,1910, to November 19, 1911, record obtained from Friez recorder at present location and datum. DISCHARGE MEASUREMENTS. Made from cable 20 feet below gage or by wading. CHANNEL AND CONTROL. Bed composed of gravel; somewhat shifting. No well- defined control. Left bank is subject to overflow. Stage of zero flow de termined August 11, 1921, gage height 1.66 feet ±0.05 foot. EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage re corder, 7.00 feet 8 a. m. to 1 p. m. May 8 (discharge, 1,170 second-feet); a higher stage and discharge no doubt occurred during period of no record. Minimum stage, 2.56 feet October 2 (discharge, 25 second-feet). 1909-1916; 1919-1921: Maximum stage recorded, 7.5 feet May 22, 1912 (discharge, 1,280 second-feet); minimum stage, 2.28 feet July 25, 1919 (discharge, 10 second-feet). ICE. Stage-discharge relation not seriously affected by ice. DIVERSIONS. A large number of diversions on ranches of Utah Construction,Co. (formerly owned by Vineyard Land & Stock Co.) above station appro priate a large portion of low-water flow of Salmon Falls Creek and Shoshone Creek. REGULATION. None except that due to diversions. . Dam of Salmon River Canal Co., which forms a reservoir having a capacity of approximately 180,000 acre-feet, is 15 miles below station. ACCURACY. Stage-discharge relation not permanent. Two rating curves used; one applicable October 1 to' February 14 is well defined between 10 and 600 second-feet, the other applicable February 20 to September 30 is well defined between 30 and 950 second-feet. Because of inaccessibility of station sev eral breaks occurred in gage-height record. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph. Records good. COOPERATION. Gage-height record furnished by Salmon River Canal Co. * Discharge measurements of Salmon Falls Creek near San Jacinto, Nev., during the year ending Sept. SO, ( Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Mar. 31 A. G. Fiedler...... 4.36 357 July 10 3.29 126 Apr. 21 Fiedler and Fatten 0 ... 5.80 789 Aug. 11 Berkeley Johnson ... 2.66 36.6 .....do - _.._ _ 6.38 945 Employee of Salmon River Canal Co. TRIBklTABY BASINS Daily discharge, in second-feet, of Salmon Falls Creek near San Jaeinto, Nev., for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 ______. 25 55 81 65 62 329 365 792 233 aft 2...... 25 55 79 78 67 422 408 838 218 is 00 3...... 26 55 78 81 76 550 902 205 57 39 4.. ______25 55 75 82 69 714 536 999 203 f\d on 5 __ ...... _ . 26 55 62 82 71 639 492 1.060 197 51 OQ 8...... 28 55 53 82 67 594 492 1,100 999 183 49 40 7...... 29 56 62 64 59 609 coo 1,170 173 Aft 40 8 ...... 29 58 64 67 58 565 478 1,170 QQCt 155 47 40 9 .. ... 30 58 60 68 68 492 450 1,100 1,030 142 45 40 10...... 32 58 68 71 133 464 464 1,030 999 130 43 40 11 ... . 31 59 65 71 294 436 492 999 966 121 38 39 12...... } 33 63 52 68 437 408 580 966 902 118 37 39 13...... 36 64 58 64 613 422 639 966 870 37 39 14 __ ...... 40 65 60 67 856 408 760 966 822 39 39 15...... 41 65 56 69 408 760 966 807 39 38 16...... 42 65 50 68 792 807 39 37 17. _ ...... 42 67 56 69 oOU 776 780 38 36 18- ...... 42 67 59 64 745 699 37 36 19. _ ...... 43 68 62 87 730 594 37 - 39 20...... 44 69 62 79 172 730 522 38 41 '464 21...... 47 75 62 78 177 776 37 41 22...... 50 79 54 5562 ' 168 776 395 38 43 23 __ ... _ . ... 48 84 56 164 792 363 37 46 24- ...... 47 84 56 62 162 822 352 37 47 25...... 47 81 56 60 195 822 339 37 46 26...... 52 81 54 65 220 792 329 36 .44 27...... __ .... 65 87 60 67 246 745 314 36 43 28-...... 53 79 64 68 286 684 298 35 42 29. _ - ...... 53 74 67 59 669 279 35 39 30 ...... 54 78 71 64 684 267 35 39 31 55 68 50 850 36 NOTE. Braced figure shows estimated mean discharge for period affected by ice. No record obtained on days for which no discharge is given. Monthly discharge of Salmon Falls Creek near San Jaeinto, Nev., for the year end ing Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 55 25 39.7 2,440 87 55 67.1 3,990 81 50 62.3 3,830 87 50 68.9 4,240 856 58 233 12, 900 April ...... 822 365 641 38,100 May 1-15 __ . ______..... _ ; ______1,170 792 1,000 29,800 June 6-30 ______1,030 267 647 32,100 July 1-12 ______.. 233 118 173 4,120 58 35 41.0 2,440 47 36 40.2 2,390 168 SURFACE WATER SUPPLY, 1921, PART XII B BIG WOOD RIVER AT KETCHUM, IDAHO LOCATION. In SE. J4 sec. 12, T. 4 N., R. 17 E., at wagon bridge directly west of stockyards, a quarter of a mile northwest of Ketchum depot, Blaine County, on Oregon Short Line Railroad, half a mile above mouth of Warm Springs Creek, and 1J^ miles above mouth of Trail Creek. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 6, 1920, to September 30, 1921, when station was discontinued. GAGE. Vertical staff on downstream end of right abutment of bridge. Gage removed August 4, 1921, while bridge repairs were made and was replaced August 10, 1921, at a datum 0.10 foot higher than formerly. All readings reduced to same datum. Gage read by J. M. Price. DISCHARGE MEASUREMENTS. Made from wagon bridge at gage or by wading. Conditions are unfavorable for accurate high-stage measurements. CHANNEL AND CONTROL. Bed composed of gravel and boulders. One channel at all stages. Control formed by rock ledge along left bank and by gravel and cobbles along right bank; shifting. EXTREMES or DISCHARGE. Maximum stage recorded during year and for period of record in 1920 and 1921, 4.50 feet June 11-13, 1921 (discharge, 2}100 second-feet); minimum stage, 0.21 foot November 6, 1920 (discharge, 80 second-feet). A lower stage and discharge may have occurred during period of no record. ICE. No record. DIVERSIONS. Several small ranch diversions above and below gage. REGULATION. None except that due to diversions. ACCURACY. Stage-discharge relation not permanent. Curve well defined and curve parallel thereto used Octob'er 1 to May 10. Fairly well-defined curve used for remainder of year. Gage read to hundredths twice daily. Gage- height record not entirely satisfactory because observer at times read gage slightly high. Daily discharge ascertained by applying mean daily gage height to rating table, or by shifting-control methods. Records fair. COOPERATION. Results of several discharge measurements furnished by water master for Big Wood and Little Wood rivers. Discharge measurements of Big Wood River at Ketchum, Idaho, during the year ending Sept. SO, Gage Dis . Dis Date Made by height charge Date Made by- height charge Feet Sec.-ft. Feet Sec.-ft. Oct. 1 0.39 106 July 16 1.46 4&1 A. O. Fiedler...... 85 205 17 1.33 Af¥7 2.52 859 29 .86 286 3.50 1,570 Aug. 25 .32 174 A. O. Fiedler ___ . 3.20 1,360 Sept. 13 .18 145 24 Berkeley Johnson...... 3.00 1,190 15 Berkeley Johnson ...... 17 149 1 Water master for Big Wood and Little Wood rivers. TBIBUTABY BASINS. 169 Daily discharge, in second-feet, of Big Wood River at Ketchum, Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Apr. May June July Aug. Sept. , \ ...... ___ ._ ...... _ 115 87 528 1,440 965 353 170 2 115 86 I 170 667 1,690 965 310 172 3.. __ .... __ ...... ___ ...... 111 85 618 1,800 915 285 170 4 ______110 83 217 685 1,800 840 274 164 5 ______. ______._ 111 89 205 708 1,920 791 262 161 6. ______...... 120 80 186 731 1,920 734 250 156 7 ...... 113 174 755 1,920 701 238 151 8...... __ ...... 108 148 770 1,920 687 226 151 9 ____ ...... __ 113 165 829 1,980 665 214 150 10...... ____ ..... ______. 110 176 829 1,920 636 202 150 11- __ ...... _ ...... 111 188 890 2,100 614 187 149 12...__.__ ..__. ____ ...... 113 188 915 2,040 584 193 149 13.. ___ ...... 113 220 965 2,040 575 187 146 14. ______.. __ ...... 110 9J.9 990 1,920 562 185 145 IS...... 116 984. 1,040 1,690 545 187 145 16...... 120 261 1,120 1,470 512 191 143 17...... ___ ...... 110 256 1,140 1,470 471 189 144 18 ...... 106 250 1,220 1,120 459 187 145 19 _ __ 102 264 1,280 1,120 443 191 144 20. _ .... ___ . _ . __ .... __ .... 100 - 290 1,220 1,120 435 189 141 21 ...... 100 312 1,170 1,020 408 189 143 22. ___ . ______.. 102 327 1,090 1,020 378 191 143 23 ______...... 105 334 965 1,060 339 185 143 24 __ .. ______.. 106 348 1,060 1,170 329 184 143 25...... __ ...... __ . inn 362 1,140 1,090 363 177 143 26...... ____ ...... __ .. 102 376 1,280 1,120 346 184 143 27. __ ...... __ ...... 104 398 1,520 1,120 326 184 idn 28 ...... 99 416 1,520 1,120 316 182 142 29...... __ ...... 96 439 1,440 1,140 294 180 138 30...... 104 482 1,470 1,120 288 175 137 31 ...... 96 1,420 349 175 NOTE. Braced figures show estimated mean discharge for period indicated. Shifting-control method used May 11-26. Gage not read Aug. 5-9; discharge interpolated. No record obtained Nov. 7 to Mar. 31. Monthly discharge of Big Wood River at Ketchum, Idaho, for the year ending Sept SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean October __ . ______. ______.. _ __ 120 96 108 6,640 89 8G 85.0 1,010 April...... 482 148 267 15,900 May ______. _ __ . ... 1,620 528 1,030 63,300 2,100 1,020 1,510 89,800 July . . 965 288 543 33,400 353 175 210 12,900 September __ . __ . _ __ . ___ . _ ___ .... 172 137 149 8,870 NOTE. See footnote to table of daily discharge. BIG WOOD RIVER AT GIMLET, IDAHO LOCATION. In NE. M NE. M sec. 18, T. 3 N., R. 18 E., at highway bridge half a mile south of Gimlet, Blaine County, and 6 miles south of Ketchum. DRAINAGE ARK A. Not measured. RECORDS AVAILABLE. April 25, 1904, to May 31, 1905; July 18, 1920, to Sep tember 16, 1921, when station was discontinued. 170 SURFACE WATER SUPPLY, 1921, PART XII B GAGE. Vertical sfeJF attached to bridge pile on right bank 10 feet above Gim let highway bridge; installed August 12, 1920; read by James Wheeler. July 18 to August 11, 1920, a temporary staff at same site and datum was used. For period April 24, 1904, to May 31, 1905, a vertical staff at prac tically same site, but at a different datum, was used. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL.- Bed composed of gravel and boulders. Control of same material, somewhat shifting. One channel at all stages. EXTREMES OP DISCHARGE. Maximum stage recorded during period May 30 to September 16,4.76 feet June 11 (discharge, 3,660 second-feet). An estimated mean discharge of 3,800 second-feet occurred June 12. Minimum^ stage, 1.02 feet September 13 (discharge, 246 second-feet). A lower stage may have occurred on a day of no record. ICE. No record. DIVERSIONS. A few small diversions for irrigation above gage. RE GTTL ATION . None. ACCURACY. Stage-discharge relation not permanent. Rating curve, which is well defined between 200 and 2,500 second-feet, and a curve parallel thereto used during period. Gage read ±o hundredths usually every other day. Daily discharge ascertained by applying daily gage height to rating table and interpolating and estimating for days of no record. For discharge above 2,500 second-feet record * fair; below this point they are good. COOPERATION. Gage-height record and several discharge measurements fur nished by water master for Big Wood and Little Wood rivers. Discharge measurements of Big Wood River at Gimlet, Idaho, during the period Apr. # to Sept. 16, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. feet Sec.-ft. Apr. 3 A. 0. Fiedler...... 1.57 389 July 29 1.49 466- May 30 .....do. _ .. _____ 3.69 2,390 1.10 280 June 23 Berkeley Johnson _ ... 3.37 ' 2,100 Sept. 13 S. H. Chapman ...... 1.02 244 July 9 S. H. Chapman" ...... 2.31 1,020 16 Berkeley Johnson.. _ . 1.06 26» 18 Berkeley Johnson ...... 1.83 688 "Water master for Big Wood and Little Wood rivers. Daily discharge, in second-feet, of Big Wood River at Gimlet, Idaho, for the period May 30 to Sept. 16, 1921 Day May June July Aug. Sept. Day May June July Aug. Sept. 1. _____ . 2 94O 1,530 546 270 16 ______2,470 814, 361 263- 2 _ ...... 1,380 502 263 17 ...... 2,120 795 323 3 _ ... . 1,290 502 271 18...... 690 318 4 ...... 1,190 4fl9 271 19.._...... _._ 655 312 5.. _____ . 1,100 441 971 20 ______2,000 690 308 2,700 r 6 ____ . .... 1,080 420 271 21 ______622 301 7 ______. 1,060 412 22...... 2,020 576 299 8...... 1,040 405 23 _ . ___ _\_ 2,120 530 297 9 ______1,020 398 24...... ___ . 2,240 545 279 10...... 3,420 982 390 258 2,240 560 11 ______. 3,660 945 361 26...... 2,100 530 292 12.. 3,800 945 361 27 ...... 1,950 494 301 13 ____ .... 3,540 908 361 246 28 __ ...... 1,800 457 305 14 ______3,540 870 361 252 29 ...... 1,660 468 288 15...... 3,060 832 361 258 30...... 2,360 1,530 457 282 31...... 2,300 590 276 NOTE. Discharge estimated by comparison with records at Hailey and Ketchum June 2-9,12,18-21, and Sept. 7-12. Discharge interpolated May 31, June 26, 27, 29, July, 3, 4, 6-8,10,14,16, 22, 24, 27. Aug- 1, 5, 7-9,12,13,15, 18-20, 22, 26, 30, 31, Sept. 1, 4, 5,14, and 15. TBIBXTTARY BASINS 171 Monthly discharge of Big Wood River at Gimlet, Idaho, for the period May SO to Sept. 16, 1921 Discharge in second-feet Run-off Month in acre feet Maximum Minimum Mean May 30-31...... __ . __ . __ . -. _ .. __ ... ___ . 2,360 2,300 2,830 9,240 1,530 2,500 149,000 July ...... __ .-. ._ .. .-.- 1,530 457 827 50,800 546 276 358 22,000 September 1-16 ______271 246 262 8,310 239,000 BIG WOOD RIVER AT HAILEY, IDAHO LOCATION. In sec. 9, T. 2 N., R. 18 E., at steel highway bridge one-fourth mile southwest of Hailey, Blaine County. DEAINAGE ABEA. 640 square miles (measured on topographic maps). RECORDS AVAILABLE. June 11, 1915, to September 30, 1921. GAGE. Vertical staff set in concrete on right bank, installed April 6, 1920, at a datum 1 foot lower than previous gage; used April 8, 1920, to September 30, 1921. From April 3, 1917, to April 7, 1920, a vertical staff in two sec tions was used; high-water section on left bank and low-water section at different datum on right bank; all readings on low-water staff corrected to datum of high-water section. Prior to April 3, 1917, an inverted stadia board attached to pile near left bank was used. Zero gage height on vertical staff used April 3, 1917. to April 7, 1920, was at gage height 6.00 feet on inverted stadia board gage. Gage read by employees of United States Forest Seryice. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Bed composed of coarse gravel and sand; clean. Channel fairly straight above and below station. Banks covered with light brush; subject to overflow at high stages when river may flow in from one to three channels, the number depending on the stage. Low-water control formed by sheet piling used to protect a water may# that crosses the river; high-water control subject to shift. EXTREMES OF DISCHAKGE. Maximum stage recorded during year, 5.70 feet June 12 (discharge, 3,560 second-feet); minimum stage, 0.51 foot January 30 (discharge, estimated, 0.4 second-foot). 1915-1921: Maximum stage recorded, that of June 12, 1921; minimum stage that of January 30, 1921. ICE. Stage-discharge relation slightly affected by ice at times. DIVERSIONS. A number of small diversions for irrigation principally from tributaries are made above station. Hailey power plant, half a mile up stream, utilizes as a tailrace a natural channel on east side of river known as Big Wood Slough. A large amount of water is diverted from main stream in this manner and is returned to river below the station. Records of the flow of Big Wood Slough have been obtained (see p. 190), and the total flow of Big Wood River is represented by amount of water passing both stations (pp. 173-4). REGULATION. Variation in the amount of water used at Hailey power plant causes some diurnal fluctuation at gage, but as observations on the river and on Big Wood Slough are practically simultaneous each day, the effect of such regulation is probably eliminated. 172 SURFACE WATER SUPPLY, 1921, PART XII B ACCURACY. Stage-discharge relation not permanent; slightly affected by ice December 9 to March 4. Three well-defined rating curves and curves parallel thereto used during the year. Gage read to hundredths once daily. Daily discharge ascertained by applying daily gage height to rating table. Records good except for discharge above 2,000 second-feet, for which they are fair. COOPERATION. Gage-height record prior to July 1, 1921, furnished by Idaho Irrigation Co. Water master for Big Wood and Little Wood rivers furnished results of measurements made by him. Tables of combined discharge of Big Wood River and Big Wood Slough are published herewith. Discharge measurements of Big Wood River at Hailey, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. V Feet Sec.-ft. Dec. 13 0.62 o60.8 July 9 3.93 903 . do. .82 06.7 14 3.50 589 30 .. do ... _ ...... 51 0.4 19 3.32 435 TV/for Q 1.23 17.8 22 3.13 370 Apr. 3 . do 2.12 156 29 2.70 223 19 S. H. Chapman^ ...... 2.52 354 G. T. Parkinsone ...... 2.60 201 25 ....-do ...- ...... 2.69 414 10 2.32 135 May 10 ..... do...... 4.09 1,320 17 do ...... 2.15 104 27 do. 5.13 2,530 23 1.98 79 1 30 Fiedler and Wheeler e__ 5.02 2,570 Sept. 12 S. H. Chapman ...... 1.64 42.6 4.64 1,650 16 1.70 48.7 25 4.71 1,870 o Discharge estimated. 6 Stage-discharge relation affected by ice. «Associated with office of water master for Big Wood and Little Wood rivers. Daily discharge, in second-feet, of Big Wood River at Hailey, Idaho, for the year ending Sept. SO, 19%1 Day. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May Jane July Aug. Sept. 1 . . 113 45 9.4 42 540 2,310 1,410 281 69 2...... 109 36 9.4 55 750 2,160 1,180 281 53 3.... _ ...... 113 36 10 ! 150 848 2,160 1,070 266 55 4...... 111 38 7.6 0.8 222 950 2,310 970 236 54 6_...... 47 34 12 22 210 1,170 2,770 970 196 55 6 ...... %, 28 12 22 187 1,090 2,930 925 184 53 7.. ____ ..... 56 16 11 .7 22 167 1,090 3,090 925 172 53 56 15 4.0 22 141 1,170 3,090 880 1 f\f\ 53 9 ...... 56 17 22 142 1,250 3,090 880 140 52 10 __ ...... 69 16 22 139 1,250 3,090 790 130 46 1.0 11...... 72 16 22 166 1,330 3,240 790 121 43 12...... 75 16 22 222 1,330 3,560 710 ' 121 43 13.. ______.. 76 W, .8 24 324 1,420 3,370 710 112 43 14...... 69 10 23 366 1,420 3,350 670 112 39 15...... 78 9.4 1.0 22 350 1,750 3,160 630 112 49 16...... 72 10 22 340 2,020 2,640 592 112 49 17...... 72 11 22 329 2,310 2,010 655 104 47 18.... . 69 9.4 .5 22 346 2,160 1,850 490 96 44 19...... 75 13 29 346 1,880 1,700 435 96 56 20...... 72 101 32 364 1,630 1,550 435 96 52 21...... 52 84 32 383 1,520 1,660 412 96 48 22...... 54 69 1.0 30 422 1,420 1,660 350 96 45 23...... 54 75 30 489 1,420 1,790 332 80 41 24.. ____ . .... 43 56 30 465 1,520 1,930 332 80 41 25...... 45 54 30 422 2,020 1,930 332 77 41 26...... 47 56 29 422 2,160 1,790 314 77 39 27 . 45 56 30 402 2,610 1,660 281 80 37 28. __ . __ . ... 47 47 30 422 2,460 1,660 250 81 39 29...... 451 28 30 465 2,610 1,660 222 75 39 30. __ . _ . .... 45 10 .4 39 513 2,460 1,660 209 75 41 31.... . 43 .4 37 2,310 196 75 NOTE. Braced figures show estimated mean discharge for periods indicated. Shifting-control method used Apr. 6-16, June 11-20. Discharge interpolated Nov. 29 and Mar. 25. TRIBUTARY BASINS 173 Monthly discharge of Big Wood River at Hailey, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-oft Month in acre-fee\ Maximum Minimum Mean 113 43 65.4 4,020 101 9.4 34.3 2,040 December ______- ______12 3.17 195 .56 34.4 1.00 55.5 39 23.3 1,430 April...... 513 42 300 17,900 May 2,610 540 1,610 99,000 3,560 1,550 2,360 140,000 July ...... -...... -.-...... 1,410 196 621 38,200 281 75 129 7,930 69 37 47.3 2,810 3,560 434 314,000 Combined daily discharge, in second-feet, of Big Wood Slough and Big Wood River at Hailey, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1... . ___ . 182 210 141 152 148 152 312 839 2,490 1,620 538 OCA 2. ___ . ___ . 178 201 179 150 144 152 339 961 2,330 1,360 503 286 3 . 179 201 180 144 143 1RO 4ft4 1,100 2,330 1,200 466 OOQ 4. __ - _ .... 180 203 159 143 141 152 479 1,120 2,500 1,080 458 9QQ «. _ ...... 164 199 163 142 144 202 455 1,390 3,080 1,050 490 312 6. __ . ___ - 152 193 163 141 133 202 420 1,320 3,350 1,120 406 OlA 9oa 7 ______- '169169 181 162 135 133 212 412 1,340 3,340 1,140 394 8. ______- 180 164 133 137 202 386 1,430 3,280 i rtoft 361 298 9 __ . ___ - 169 196 157 133 137 202 387 1,530 3,300 1,100 351 9*74. 10 . __ .. 248 195 152 137 141 202 396 1,530 3,280 1,000 34i 291 11. 251 195 161 141 144 212 450 1,640 3,500 990 343 300 12...... 240 181 133 141 141 202 455 1,610 3,910 900 354 300 13...... 241 195 137 137 148 214 5Q4 1,730 3,630 900 «JOO 9QQ 14. ______. 220 189 148 133 144 213 636 1,730 3,530 870 323 284 15. __ ...... 204 188 141 137 144 202 583 2,060 3,310 S41 345 9OA OQO 16 213 189 133 160 141 212 573 2,290 2,810 803 345 977* 17, ...... 223 190 137 160 137 .919 RfjA 2,510 2,180 745 q«>7 18. . _ .... 215 188 152 160 141 202 591 2,340 2,020 680 329 274 19. - 201 268 152 160 141 209 603 2,050 1,870 635 307 286 20...... 194 248 152 156 133 212 621 1,820 1,740 625 307 282 2L ______. 217 216 152 152 137 212 616 1,700 1,870 612 296 278 22 ____ . __ . 205 201 152 152 141 210 679 1,600 1,920 583 329 275 23 __ __ .. 219 203 152 132 137 210 734 1,610 2,090 554 291 266 24 ______. 208 207 150 132 137 210 710 1,710 2,110 565 302 266 25 ______:. 210 201 148 136 133 210 644 2,230 2,140 565 299 266 26, __ . __ .. 212 207 144 132 137 209 644 2,440 2,010 504 310 264 27 ____ 224 203 144 132 161 220 613 2,840 1,860 492 313 262 38 ...... 226 175 152 140 161 220 633 2,650 1,880 483 303 264 29 ______. 210 168 148 136 210 749 2,820 1,970 455 308 264 3-0 __ ...... 210 161 161 151 296 783 2,620 1,890 442 286 266 3L __ .. 222 161 140 294 2,460 429 ' 286 SURFACE WATER SUPPLY, 1921, PART XII B Combined monthly discharge of Big Wood Slough and Big Wood River at Hailey, Idaho, for the year ending Sept. SO, Discharge in second-feet Run-off Month in acre-feet Maximum Minimum Mean 251 152 205 12,606 268 161 198 11,800 ISO 133 153 9,410 160 132 143 8,790 161 133 141 7,. 830 March ______..... ______.. 296 152 207 12,700 April _,_. .-_...... ___.. _.____.__.___..______.._ 783 312 551 32, 8W> 2,840 839 1,840 113,000> 3,910 1,740 2,58fr 154, OCOf July...... 1,620 429 820 50,400 638 286 351 21,600 Septentber.. _____ .. ______312 262 282 16,800 The year ____ , ______3,910 132 624 452,000 BIG WOOD KIVEK, AT GLE1TDALB BRIDGE, NEAR BELLEVtTE, IDAHO LOCATION. On line between sees. 12 and 13, T. 1 N., R. 18 E., at Glendale Bridge 2>^ miles southwest of Bellevue, Blaine County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 1, 1920, to August 23, 1921, when station was dis continued. GAGE. Gurley water-stage recorder installed May 21, 1920, on downstream ride of bridge at center pier; referred to a vertical staff attached to same pier which was used prior to that date. Recording gage carried out by high water on June 7, 1921; thereafter only staff readings obtained. Gage read by O. A. Jones. DISCHARGE MEASUREMENTS, Made from cable a quarter mile below gage or by wading. CHANNEL AND CONTROL. Bed composed of sand and gravel. Channel winding above and below gage. Banks subject to overflow at high stages forming several channels. Control of gravel; subject to shift at high stages. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 4.53 feet June 12 (discharge, not determined). Maximum stage for which discharge was determined, 4.40 feet at 4 p. m. June 7 (discharge, 3,170 second-feet); minimum measured discharge, 53 second-feet August 23. A lower stage and discharge may have occurred during period of no record. 1920-1921: Maximum stage recorded that of June, 1921; minimum stage 0.08 foot at 4 a. m. September 19, 1920 (discharge, about 26 second-feet). ICE. No record. DIVERSIONS. Numerous diversions for irrigation above and below station. REGULATION. None except that due to diversions. ACCURACY. Stage-discharge relation not permanent; changed during high water of June. Two rating curves used: One, applicable March 29 to June 7, is well defined between 70 and 2,200 second-feet; the other, applicable June 26 to end of record, is fairly well defined between 40 and 1,700 second-feet. For period when staff gage was used daily discharge ascertained by applying daily gage height to rating table. During period of operation of water- stage recorder, daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph. Records good prior to June 7, thereafter records are fragmentary. COOPERATION. Gage-height record and several discharge measurements fur nished by water master for B'ig Wood and Little Wood rivers. TRIBUTARY BASINS 175 Discharge measurements of Big Wood River at Glendale Bridge, near Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Oct. 1 0.41 64.3 Apr. 25 1.82 609 25 . __ do ____ . __ ... .49 95.7 May 11 2.89 1,570 Nov. 3 . __ do. _____ . _ .. .46 97.4 Fiedter and Jones«._ _ 3.40 2,070 tDec. 14 .40 88.0 26 a 93 1,590 Jan. 31 ..do . . .48 85.4 July 19 2.77 318 .85 188 Aug. 23 1.98 53.0 18 1.58 485 "Associated with office of water master for Big Wood and Little Wood rivers. Daily discharge, in second-feet, of Big Wood River at Glendale Bridge, near Bellevue, Idaho, for the period Mar. 29 to July 26, 1921 Day Mar, Apr. May June July Day Mar. Apr. May June July I ...... 138 SfU 2,120 16...... __ 488 1,860 2 ______. 180 958 2,070 17 ...... 480 1,960 3..... ___ . 321 1,080 2,020 910 18 ...... 490 1,960 .379 4. _ ...... 454 1,150 2,020 19 ______590 1,860 319 ,5 ...... 431 1,310 2,240 785 20 ...... 615 1,760 6. ___ ...... 364 1,310 2,400 21 ...... 627 1,760 238 7 ...... 355 1,310 2,950 22...... 679 1,760 215 % ...... 301 1,310 23 ...... 810 1,660 9 .. . 297 1,360 24...... 795 1,710 207 10 _ _..._ 377 1,460 672 25 ...... 693 1,760 11 ______428 1,510 26...... 634 1,910 1,620 200 12 ...... 506 1,460 27.... _ ..... 602 2,020 1,470 13 ______522 1,460 28. __ ...... 634 2,020 14...... _ .. 490 1,560 455 29...... 116 693 2,020 15...... __ 495 1,710 30 ...... 118 802 2,020 1,400 31...... 124 1,960 NOTE. See "Accuracy" paragraph in station description. Monthly discharge of Big Wood River at Glendale Bridge, near Belleoue, Idaho, for the period Mar. 29 to June 7,1921 » Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean March 29-31. ______. ____ . .... 124 116 119 708 April...... __ ...... 810 138 510 30.300 May. ______...... 2,020 834 1,610 99,000 June 1-7 ___ ...... 2,650 2,020 2,260 31,400 161,000 176 SURFACE WATER SUPPLY, 1921, PART XII B BIG WOOD RIVER NEAR BELLEVTTE, IDAHO LOCATION. In sec. 20, T. 1 S., R. 18 E., three-fourths of a mile below Blair's ranch, l}£ miles above flow line of Magic reservoir, and 10 miles southwest of Bellevue, Blaine County. Camas Creek enters reservoir 3 miles below station. DBAINAGE AREA. 823 square miles (measured on topographic and Land Office maps). RECORDS AVAILABLE. July 6,1911, to September 30,1921. GAGE. Gurley water-stage! recorder on right bank installed July 8,1921, three-1 eighths mile above former location which was used prior to June 16, 1921, when gage was washed out by high water. Datum at new location not determined. Inspected by assistants of Wood River water master. For gages used prior to June 16,1921, see Water-Supply Paper 513. DISCHARGE MEASUREMENTS. Made from cable 30 feet above gage or by wading. CHANNEL AND CONTROL. Bed composed of coarse gravel. Control of same material; shifts occasionally. Both banks are clean and may be overflowed at extremely high stages. EXTREMES OF DISCHARGE. Maximum stage during year from water-stage recorder, 6.07 feet at 7 p. m. June 16 (discharge, 3,660 second-feet); a . higher stage and discharge no doubt occurred during period of no record after gage had been washed out; minimum stage, 0.71 foot at 6 p. m. October 6 (discharge, 44 second-feet). A lower discharge may have occurred during period of no record. 1911-1921: Maximum stage recorded, that of June 16, 1921; minimum discharge, 25 second-feet April 22-24, 1920; lower flow may have occurred on a day of no record. ICE. Stage-discharge relation slightly affected by ice. DIVERSIONS. Numerous small diversions are made for irrigation in the vicinity of Bellevue and flailey. Flood waters are stored in the Magic reservoir of the Idaho Irrigation Co. Magic dam is about 9 miles downstream. REGULATION. None. ACCURACY. Stage-discharge relation permanent; affected by ice during parts of December, January, and February. Because of change in location of gage, two rating curves were used: One, applicable October 1 to June 16, is well denned between 25 and\2,200 second-feet; the other, applicable July 8 to Sep tember 30 is well denned between 50 and 650 second-feet. Daily discharge ascertained by applying to rating table mean daily gage height obtained , by inspection of recorder graph. Records good. COOPERATION. Gage-height record and most of discharge measurements fur nished by water master for Big Wood and Little Wood rivers. Discharge measurements of Big Wood River near Bellevue, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Nov. 15 8. H. Chapman" . __ 1.17 101 Feet Sec.-ft. 87 S July 21 S. H. Chapman . .... 1.55 203 61.10 21 Berkeley Johnson...... 1.56 216 Apr. 18 8. H. Chapman...... 2.42 479 oq 1 A.H 25 .....do...... __ . 2.70 601 169 May 9 .....do... __ ...... 28 . _ .do.... __ ...... 1.32 131 23 ..... do...... 4.06 1,590 Aug. 4 G. T. Parkinsono ..... 1.34 142 4. 38 1,940 18 8. H. Chapman __ ... 1.19 104 8 S. H. Chapman ...... 5.09 2,630 22 Berkeley Johnson _ ... 1.14 89.3 July 8 Sept. 13 8. H. Chapman . ... 1.40 154 14 . .do...... 1.93 423 17 Berkeley Johnson...... 1.46 176 « Associated with office of water master for Big Wood and Little Wood rivers. * Stage-discharge relation affected by ice. TRIBUTARY BASINS 177 Daily discharge, in second-feet, of Big Wood River near Bettevue, Idaho, for the year ending Sept, SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1...... __ ... 99 105 84 86 134 701 1,990 127 84 2...... I1 48L 97 105 84 90 128 781 1,890 139 86 3.... ._ .. 99 107 90 96 175 886 1,890 142 94 4 Q7 107 CD 104 288 955 1,990 136 114 5... - -. 4? 97 104 fi7 115 9Qd 1,060 2,190. 120 130 72 6 . _____ . 47 97 94 Ofl 121 317 1,100 2,390 117 142 7. 51 104 99 77 119 304 1,100 2,590 112 142 8. ______. 51 97 104 117 297 1,140 2,590 584 110 144 9. ______. 49 91 105 114 272 1,220 2,840 577 102 144 10 ______. 54 90 108 112 266 1,300 3,000 545 98 147 11. ______.. 55 81 110 65 83 114 291 1,340 2,940 519 98 147 12. ______.. 56 81 97 88 115 330 1,340 3,050 482 100 150 13..... 56 84 93 124 434 1,340 3,160 427 98 156 14. ______54 99 96 136 525 1 430 3,100 392 98 160 16...... 57 105 86 93 134 501 1,560 3,050 364 98 153 16...... 56 108 93 136 478 1,700 3,160 346 98 167 17 ______.. 56 121 79 88 150 451 1,800 308 98 174 18 ______.. 55 123 81 79 152 460 1,750 277 98 174 19. __ . __ .. 130 . 91 68 146 492 1,660 263 96 192 20. . __ .. 128 96 68 132 530 1,560 239 96 226 21...... 110 97 76 123 549 1,610 217 94 213 22 ...... 102 99 1 86 128 585 1,660 192 90 209 23 ...... 55 100 90 87 150 666 1,560 167 90 200 24 ______.. 97 86 87 180 644 1,520 156 90 "192192 25 ... __ ... 96 88 168 601 1,660 153 88 26... .. _ .. 102 90 144 580 1,800 156 88 185 27...... 114 1 85 90 126 564 1,990 147 90 185 28. ___ ...... 86 99 88 123 575 2,040 139 90 185 29. . .. 97 ini 75 134 616 2,140 130 88 185 30... _ ...... 100 107 79 144 672 2,040 124 86 188 31 ____ .- .... 99 86 76 136 1,990 117 84 NOTE. Braced figures show estimated mean discharge for periods indicated. Stage-discharge relation affected by ice Dec. 13-16, 25-30, Jan. 8-28, Feb. 1-10. Gage not in operation June 17 to July 7. Monthly discharge of Big Wood River near Bettevue, Idaho, for the year ending Sept. SO, Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 100 47 5&5 3,600 130 81 102 6,070 110 917 5,760 90 740 4,550 96 80.8 4,490 180 86 128 7,870 April.... ___ ...... __ ...... ___ ..... __ .. 672 128 434 25,800 2,140 701 1,480 91,000 3,160 1,890 2,610 82,800 July 8-31 ... ______...... 584 117 293 13,900 142 84 102 6,270 September ______. ______226 84 162 9,640 178 SURFACE WATER SUPPLY, 1921, PART XII B BIG WOOD RIVER BELOW MAGIC DAM, NEAR RICHFIELD, IDAHO LOCATION. In sec. 18, T. 2 S., R. 18 E., Blaine County, half a mile below Magic dam of Big Wood Canal Co. (formerly Idaho Irrigation Co.) and 18 miles northwest of Richfield, Lincoln County. No tributaries between dam and station. DRAINAGE ABBA. Not measured. RECORDS AVAILABLE. April 19, 1911, to September 30, 1921. GAQE. Gurley water-stage recorder on right bank installed April 20, 1916, to replace former Lallie recorder at same location. Gage inspected by Ed Day ton and G. T. Parkinson. Datum presumably unchanged since establish ment of station, DISCHARGE MEASUREMENTS. Made from cable 10 feet above gage or by wading. CHANNEL AND CONTROL. Bed composed of clean coarse gravel and small boul ders. Control of same material; somewhat shifting. Point of zero flow determined September 17, 1921, at gage height 0.85 foot ±0.05 foot. EXTREMES OF DISCHARGE. Maximum stage during year from water-stage recorder, 9.18 feet at 8 p. m. June 12 (discharge, 4,240 second-feet); mini mum stage, 1.20 feet October 11-23 (discharge, 1.9 second-feet). 1911-1921: Maximum stage recorded, 9.2 feet May 18,1911 (discharge, 5,070 second-feet); no flow reported February 3, 1915. ICE. Stage-discharge relation seldom affected by ice. DIVERSIONS. No diversions made by the Big Wood Canal Co. above station, but numerous ranch diversions are made in upper drainage basin, the larg est quantity of water probably being used in the district below Hailey. Flood waters are stored in Magic reservoir just above station, and the first diversion by the company is the Richfield canal, about 2 miles below. REGULATION. Flow past station is regulated by gates in outlet tunnel at Magic, dam. ACCURACY. Stage-discharge relation practically permanent. Rating curve which is well defined up to 3,600 second-feet, and curve parallel thereto used during the year. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph, or for days when fluctuations were extreme, discharge ascertained by averaging results obtained by applying gage height for hourly or other regular interval to the rating table. Records good. COOPERATION. Gage-height record and most of discharge measurements fur nished by water maste for Big Wood and Little Wood rivers. Discharge measurements of Big Wood River below Magic dam, near Richfield, Idaho, during the year ending Sept. SO, Gage Dis Gage Dis Date Made by height charge Date Made by height charge feet Sec.-ft. Feet Sec.-ft. 4.20 970 4.38 1,100 23 6.35 2 OQA 22 4.36 1,140 June 4 Fiedler and Jones* .... 6.96 2,640 27 Parkinson <* and Baer*. 4.34 1,100 8 S. H. Chapman ...... 8.07 3,380 Sept. 7 S. H. Chapman ...... 4.22 995 21 .. _ do -. ______5.28 1,730 17 1.49 10.4 July 21 Berkeley Johnson ..'. ... 5.19 1,760 0 Associated with office of water master for Big Wood and Little Wood rivers. z> Employee of the Big Wood Canal Co. TRIBUTARY BASINS 179 Daily discharge, in second-feet, of Big Wood River below Magie dam, near Richfield, Idaho, for the year ending Sept. SO, 1921 Day 0,et. ^OV. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 ...... 362 2.3 3.0 4.0 5.2 6.5 9 4 455 2,920 QGfl J AQA 1,090 2...... 219 2.3 3.0 4.0 5.2 6.5 9 a AQ(\ o Qon qon 1,420 1,090 3..... __ .... 126 2.3 3.0 4.0 5 9 R Q 10 Kfl*> 2,780 320- 1,420 1,050 q o t\ 0 eoj. o oar\ 4.. ____ . .... 6266 2.5 4.0 5 7 10 1,210 1 3QA 1,010 5 ...... 2.5 3.2 4.0 5.6 R Q 11 679 O fififl 1,720 1,350 1,010 6...... 411 2.5 3.2 4.0 5.6 fi Q 11 826 2 920 1,720 1,280 1,010 7.. ______. 435 2.5 3.2 4.0 5.8 R Q 12 826 3,330 1,720 1,240 976 8.. ______.. 120 2.5 3.2 4.4 6.0 6 9 12 OOfi 3,400 1,670 1,210 976 9.. . ___ .. 25 2.5 3.2 4.4 6.0 6 9 1413 ' QQQ 3,620 1,670 1,130 976 10- . ___ . 2.3 2.7 3.2 4.4 fa 0t\ 6 9 CAQ 1,670 1,130 O7fi 11...... 1.9 2.7 3.2 4.8 6.0 7.3 14 Qflq 3,620 1,670 i i^ft 976 12...... 1.9 2.7 3.2 4.8 6.0 7.3 14 QAA 3 840 1,720 1,130 940 13...... 1.9 2.7 3.4 4.8 6.0 7.7 14 Odn 4,080 1,680 1,170 940 14.. ____ .... 1.9 2.7 3.4 A. ft 6.0 7.7 15 1,010 3 840 1,720 1,210 499 15... __ ...... 1.9 2.7 3.4 4.8 6.0 7.3 15 1,170 q -inrt 1,720 1,210 11 16...... 1.9 2 7 3.4 i s 6.0 7.7 16 1,770 0 AA(\ 1,720 1,210 10 17...... !. 1.9 2.7 3.4 4.8 6.0 7.7 17 2 540 1 04O 1,720 1,170 10 18...... 1.9 2 7 3.4 5,6 6.0 7.7 17 2,600 1,720 1,720 1,130 10 19...... 1,9 2,7 3.4 4.8 6.0 7.7 17 2,660 1,610 1,670 1,130 10 20. _____ . ... 1.9 2.7 3.4 4.8 6.0 7.7 245 2,490 1.670 1,670 1,130 10 21...... 1.9 2.7 3.4 4.8 6.0 7.7 399 2,320 1,720 1,670 1,130 10 22 ...... 1.9 3.0 3.6 4.8 6.0 8.1 235 2,320 1,670 1,670 1,090 10 23...... 1.9 3.0 3.6 5.2 6.0 8.1 230 2,320 1,670 1,610 1,090 10 24- ____ .... 2.1 3.0 3.6 5.2 6.0 8.1 233 2,100 1,670 1,610 1,050 10 25.JT.... _ .... 2.1 3.0 3.6 5.2 6.2 8.1 378 2,100 1,670 1,610 1,090 10 26- ...... 2.1 3.2 3.6 5.2 6.5 8.1 402 2,320 1,720 1,610 1,090 10 27.. __ ...... 2.1 3.0 3.6 5.2 6.5 8.2 356 2,540 1,720 1.610 1,090 10 28...... 2.3 3.0 3.8 \5.2 6*. 5 8.4 360 2,720 1,720 1,610 1,090 10 29...... 2.3 3.0 3.8 \B.2 8.6 389 2,920 1,780 1,610 1,090 10' 30- ___ ...... 2.3 3.0 4.0 5.2 8.8 407 2,980 1,780 1,550 1,090 10 31...... 2.3 3.8 5.2 Q 1 2,920 1,550 1.090 NOTE. Method of subdivided days used Oct. 1, 3, 4, 6-9, Apr. 20, 21, 25, May 16, July, 1,13, Sept. 14. Gage not read Dec. 15, Feb. 2,7, 21, 25, 28, Mar. 27, 28, 30, 31, and Apr. 1; discharge interpolated. Monthly discharge of Big Wood River below Magic damt near Richfield, Idaho, for the year ending Sept. 30, Discharge in second-feet Month Run-off in acre-feet Maximum Minimum Mean October. ______. ______.... 435 1.9 60.3 3,710 3.2 2.3 2.72 162 4.0 3.0 3.40 209 5.6 4.0 4.72 290 February ______. ... 6.5 5.2 5.91 328 9.1 6.5 7.60 467 April ...... __ ...... ___ ...... _ ...... 407 9.4 129 7,680 2,980 455 1,660 102,000 4,080 1,610 2,530 151,000 July...... 1,720 320 1,540 94,700 1,490 1,050 1,180 72,600 September ...... 1,090 ie 45ft 27,100 4,080 1.9 635 460,000 BIG WOOD RIVER ABOVE NORTH GOODING CANAL, NEAR SHOSHONE, IDAHO LOCATION. In gee. 10, T. 4 S., R. 18 E., 1 mile above heading of North Good- ing canal, 13 miles below Magic dam, and 14 miles northeast of Shoshone, Lincoln County. DRAINAGE ABBA. Not-measured. RECORDS AVAILABLE. April 1 to September 30, 1921. 180 SURFACE WATER SUPPLY, 1921, PART XII B GAGE. Vertical staff on right bank; read by J. H. Gilmore. DISCHARGE MEASUREMENTS. Made by wading or from cable located 300 feet below gage. CHANNEL AND CONTROL. Bed composed of lava rock partly covered with gravel. Control formed by lava-rock riffle about 100 feet below gage; fairly perma nent. One channel at all stages. Point of zero flow occurs at a gage height of approximately 4.50 feet. EXTREMES OF DISCHARGE. Maximum stage recorded during period April 1 to September 30, 12.79 feet June 13 (discharge, 3,330 second-feet); channel reported dry prior to April 21 and subsequent to September 16. ICE. No records; channel practically dry. DIVERSIONS. Numerous diversions for irrigation made above and below station. Richfield canal of Big Wood Canal Co. (operating Idaho Irrigation Co.'s, project) is main diversion between station and Magic dam. REGULATION. Flow regulated by operation of head gates at Magic dam about 13 miles above, except when water is wasted over spillway. ACCURACY. Stage-discharge relation probably permanent. Rating curve which is well defined between 100 and 1,500 second-feet and curve parallel thereto used during the period. Gage read to hundredths twice daily. Daily dis charge ascertained by applying mean daily gage height to rating table; shifting-control method used June 4-13. Records good. COOPERATION. Gage-height record and discharge measurements furnished by water master for Big Wood and Little Wood rivers. Discharge measurements of Big Wood River above North Oooding canal, near Sho- shone, Idaho, during the period Apr. .1 to Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.~ft. Feet See.-ft. Apr. 30 6.68 296 June 20 S. H. Chapman. ____ 7.43 556 7.08 416 22 .....do ___ ...... 7.57 599 14 .. do...... 7.53 547 July 20 Q. T. Parkinsona ...... 7.53 582 22 __ do 9.92 1,550 Aug. 12 6.90 392 a Associated with office of water master for Big Wood and Little Wood rivers. Daily discharge, in second-feet, of Big Wood River above North Oooding canal, near Shoshone, Idaho, for the period Apr. 1 to Sept. 30, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 ...... 331 2,500 638 445 416 16 . __ ... 638 1,820 638 416 24 2 ___ ... 373 9 ttftfl KftQ AAR 416 17...... 1,760 1,220 603 416 3 ...... 387 2,500 569 AAR 416 18 ...... 1,760 752 603 416 4 ...... 416 9. ISfi 569 445 387 19 ...... 1,760 603 603 416 5 . _ .... 445 2,320 638 445 387 20 ...... 1,710 569 569 416 re...... Wo 475 2,380 ess- 416 416 21 ...... 206 1,560 638 569 416 505 2,740 ess 416 416 22 ____ . 143 1,560 638 569 416 8...... 505 2,810 638 416 416 23 ...... 127 1,560 603 569 416 9...... 505 3,000 638 387 416 24 ...... 122 1,410 603 536 416 10 __ .... 505 3,070 638 387 387 25 ...... 195 1,460 569 536 416 11 ...... 536 3,070 638 387 416 26 ...... 291 1,660 569 536 416 12 __ .... 536 3,070 638 387 416 27 ...... 278 1,820 603 536 416 13 __ .... 536 3,330 638 387 387 28 ...... 253 1,980 569 536 416 14 536 3,200 638 416 291 29 . ___ .. 266 2,260 603 536 387 15 ...... 569 2,880 638 416 60 30 ...... 331 2,500 675 605 387 31 ...... 2,500 475 387 NOTE. Channel reported dry Apr. 1-20 and Sept. 17-30. Shifting-control method used June 4-13. TRIBUTARY BASINS 181 Monthly discharge of Big Wood River above North Goading canal, near Shoshone, Idaho, for the period Apr. 1 to Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 331 0 73.7 4,390 2,500 331 1,130 69,500 3,330 569 1,760 105,000 July...... 638 475 590 36,300 August ______. ______445 387 413 25,400 September.. ______.. 416 0 189 11,200 The period.... ______252,000 1 BIG WOOD RIVER BELOW NORTH GOODING CANAL, NEAR SHOSHONE, IDAHO LOCATION. In sec. 15, T. 4 S., R. 18 E.» 300 yards below heading of North Gooding canal, 13 miles northeast of Shoshone, Lincoln County, and 14 miles below Magic dam. DRAINAGE AREA. Not measured. 1 RECORDS AVAILABLE. January 1,1911, to September 30, 1921. GAGE. Gurley 7-day water-stage recorder installed July 5, 1920, on right bank at same site and datum as former vertical staff installed July 8, 1918; inspected by J. Devanney and J. H. Gilmore. A temporary staff gage was used during high water of 1921. Prior to July 8, 1918, several vertical staffs on left bank, which read about 6 feet higher, were used; see Water-Supply Paper 513, page 189. DISCHARGE MEASUR EMENTS. Made from cable 100 feet below gage or by wading CHANNEL AND CONTROL. Bed composed of lava rock; practically permanent; rough. At extreme high stages water overflowed above North Gooding diversion dam into secondary channel to left of gage. Control fairly well defined. EXTREMES OP DISCHARGE. Maximum stage during period April 21 to September 30, from water-stage recorder, 8.10 feet at midnight May 29 (discharge, 2,010 second-feet); a higher stage and discharge occurred during period of no record. Stream reported dry September 17-30. 1911-1921: Maximum stage recorded, 15.0 feet (old datum) May 18, 1911 (discharge, 3,180 second-feet); no flow occurred during several differ ent periods since establishment of station. ICE. Record discontinued during winter. DIVERSIONS. Station is below all diversions of Idaho Irrigation Co. North Gooding and Richfield canals divert between station and Magic dam. REGULATION. Flow past station is regulated by gates at Magic dam and head gates of North Gooding and Richfield canals. ACCURACY. Stage-discharge relation permanent during year. Rating curve is well defined .up to 1,200 second-feet. Daily discharge ascertained by apply ing to rating table mean daily gage height obtained by inspection of recorder graph.' Records good. COOPERATION. Gage-height record and most of discharge measurements fur nished by water master for Big Wood and Little Wood rivers. 182 SUEFACE WATEB SUPPLY, 1921, PART XII B Discharge measurements of Biff Wood River below North Gooding canal, near Shoshone, Idaho, during the period Apr. 21 to Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Apr. 30 2.80 148 2.78 149 3.24 206 July 20 G. T. Parkinscno ...... 2.90 164 14 ..do...... ___ ..... 3 ^M. 222 23 3.04 189 22 __ .do _ . ______6.36 61, 130 Aug. 12 2.32 97 a Associated with office of water master for Big Wood and Little Wood rivers. 6 Estimated 40 second-feet flowing around section. Daily discharge, in second-feet, of Big Wood Rieer below North Gooding canal, near Shoshone, Idaho, for the period Apr. 21 to Sept. SO, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1...... 174 245 NOTE. Gage net in operation May 30 to June 2L Monthly discharge of Big Wood River below North Gooding canal, near Shoshone, Idaho, for the period Apr. 21 to Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean April 21-30 ______.. 183 107 132 2,620 May 1-29 ______. 1,840 174 718 41,300 June 22-30 ______216 188 199 3,550 July ...... __ ...... __ ..... 342 116 191 11, 700, August ______105 78 90.8 5,580 September __ , ___ . ____,., _____ ...... 123 0 48.1 2,860 NOTE. See footnote to table of daily discharge. BIO WOOD RIVER, AT GOODING, IDAHO LOCATION. In sec. 29, T. 5 S., R. 15 E., Gooding county, 30 feet below highway bridge and half a mile north of Gooding station on Oregon Short Line Railroad. DRAINAGE AREA. No$ measured. RECORDS AVAILABLE. April 1 to September 30, 1921. GAGE. Gurley water-stage recorder on left bank; inspected by James Devanney. TRIBUTARY BASINS 183 DISCHAKGB MEASUREMENTS. Made by wading or from cable 600 feet below gage. CHANNEL AND CONTROL. Bed composed of lava rook overlain with gravel. Con trol formed by lava-rock riffle about 300 feet below gage; permanent. One channel at all stages. EXTREMES OP DISCHARGE. Maximum stage recorded during period April 1 tq September 30, '5.64 feet June 13 (discharge, 2,250 second-feet); channel reported dry April 10-23 and September 17-30. DIVERSIONS. Numerous diversions for irrigation above and below station. REGULATION. Flow regulated by operation of head gates at Magic dam and by diversions above. ACCURACY. Stage-discharge relation practically permanent. Rating curve parallel to curve based on 1922 measurements and a fairly well defined curve for discharges below 26 second-feet used during the period. Re cording gage not in operation during high-water period May 27 to June 25, only staff gage readings being obtained. Daily discharge ascertained by applying daily gage height to rating table. For days when recording gage was in operation daily gage height obtained by inspection of recorder graph. Records fair. COOPERATION. Gage-height record and most of discharge measurements fur- by water master for Big Wood and Little Wood rivers. Discharge measurements of Big Wood River at Goading, Idaho, during the period Apr. 1 to Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Mar. 17 S. H. Chapman ° ...... 1.62 36.0 July 18 1.68 45.8 June 22 1.77 66.7 26 __ .do ______. L60 25.9 July 12 Q. T. Parkinson« ...... 1.70 52.3 Aug. 21 .....do ...... 1.30 13.1 Associated with office of water master for Big Wood and Little Wood rivers. Daily discharge, in second-feet, of Big Wood River at Gooding, Idaho, for the period Apr. 1 to Sept. SO, 1921 Day Apr. May June July Aug. Sept. Day Apr. May Jane July Aug. Sept. 1 __ . .... 8 2,090 47 21 8 16... ___ . 87 1,480 50 13 2 2 ...... 30 2,090 72 17 9 17...... 535 735 55 15 3. ___ .. 7.0 25 2,010 74 2 8 18 ...n .... 1,210 342 53 12 4 __ . .... 40 1,890 89 20 8 19...... 1,310 144 40 91 5 ...... 41 1,780 76 20 13 20 __ . .... 1 ° 1,310 20 55 12 6. _ ..... 51 1,810 48 20 14 21 _____ . 1,180 42 55 13 7 __ .... A O 67 1,890. 47 18 27 22...... 1,120 61 47 12 8 ...... 56 2*090 47 20 24 23 _____ . 1,120 42 51 10 0 9 __ . .... 50 2,170 53 18 24 24. _ . .... 16 1,120 45 56 8 * 10...... 48 2,170 50 7 18 25...... 15 966 40 33 7 11 __ .. ... 48 2,090 56 8 16 26 _____ . 12 1,060 32 28 7 12 ...... 0 48 2,090 55 13 24 27 ...... 58 1,240 24 31 7 13...... 56 2,250 44 13 24 28...... 41 1,380 30 31 8 14 ...... 59 2,170 118 12 22 29 __ . _ . W 1,550 25 to 12 15 __ . .... 59 2,010 47 12 24 30 ...... 6 1,780 29 3* 12 31 __ . .... 2,170 26 10 NOTE. Braced figures show estimated mean discharge for periods indicated. Discharge estimated Apr. 1-23 upon basis of information furnished by Big Wood River water master. Channel reported dry Apr. 10-23 and Sept. 17-30. 184 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of Big Wood River at Goading, Idaho, for the period Apr. 1 to Sept. 80, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean April...... as 0 7.00 417 2,170 8 639 39,300 2,250 20 1,120 66, 600 July.... -- . .- ...... _...._...- .... 118 26 51.8 3,190 August ______21 2 12.5 769 September ___ . ______.... 27 0 8.80 524 The period ______:__ ...... 111,000 NOTE. See footnote to table of daily discharge. BIG WOOD RIVER NEAR GOODING, IDAHO LOCATION. In sec. 21, T. 6 S., R. 14 E., at Cleek ranch, 3J^ miles above bridge on upper road between Bliss and Hagerman, 5 miles above diversion dam for King Hill project, and 6 miles southwest of Gooding, Gooding County. DRAINAGE AKEA. Not measured. RECORDS AVAILABLE. March 26, 1916, to September 30, 1921. jpAGE. Steveng 8-day water-stage recorder installed April 13, 1921, at same site and datum as vertical staff used prior to this time; read by E. F. McDowell. DISCHARGE MEASUREMENTS. Made from cable a short distance above gage"or by wading. CHANNEL AND CONTROL. Bed composed of lava rock, boulders, and coarse gravel. Control practically permanent during year; one channel at gage. EXTREMES OF DISCHARGE. Maximum stage during year from water-stage re corder, 8.20 feet midnight May 31 (discharge, 2,990 second-feet); stream reported dry October 1-10, December 18, January 13, August 25-27, and August 30 to September 4. 1916-1921: Maximum stage recorded that of May 31, 1921; stream "re ported dry January 17-22, 1917, during ice-affected period, September*5-13, 1918, July 5, August 1 to September 21, December 9-16, 1919, April 11-15, 23, May 4, July 19-27, August 15 to September 21, September 23-30, October 1-10, December 18, 1920, January 13, August 25-27, and August 30jfco September 4, 1921. ICE. Stage-discharge relation not seriously affected by ice. DIVERSIONS. Below all diversions-of North Side Canal Co. (Ltd.) and above the Big Malad Springs. Justice and Croco ditches (combinedfcapacity about 15 second-feet) divert about 3 miles below gage; a few second-feet are occasionally wasted into river about 2 miles below gage. REGULATION. Flow regulated by dams and diversions above the station. ACCURACY. Stage-discharge relation practically permanent during year, except as affected by ice, January 10-14 and February 7-11. Rating curve is well defined up to 2,300 second-feet. Gage read to hundredths once daily. Daily discharge ascertained by applying daily gage height to rating table. For days when recording gage was operated mean daily gage height "was obtained by inspection of recorder graph. Records good. COOPERATION. Gage-height record and several discharge measurements fur nished by water master for Big Wood and Little Wood rivers. TRIBUTARY BASINS 185 Discharge measurements of Big Wood River near Gooding, Idaho', during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Dec. 21 1.35 43.0 7.14 2,190 Feb. 4 1.60 73.8 17 4.37 726 A. G. Fiedler ____ -. 1.20 31.4 21 1.00 18.9 12 1.37 41.7 July 18 S. H. Chapman ...... 1.00 18.4 TWTflv 90 . .do - .... 5.97 1,370 23 '.96 15.7 27 A. G. Fiedler...... 5.83 61,290 Aug. 19 1.09 23.9 0 Water master for Big Wood and Little Wood rivers. 6 Estimated 6 second-feet additional, not included. Daily discharge, in second-feet, of Big Wood River near Gooding, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 __ . _____ 0 82 94 44 86 457 83 23 2,580 13 20 0 2.... __ ...... 0 58 90 41 85 484 80 35 2,200 20 23 0 3 .. 0 54 112 92 72 694 75 34 2,200 40 19 0 4- ______- 0 52 107 198 68 980 64 22 1,900 34 14 0 5- _ . __ . ... 0 49 82 143 49 1,400 72 22 1,840 34 13 18 6 ... 0 56 78 161 30 1,020 76 21 1,840 21 19 23 7...... 0 64 76 143 828 41 30 2,050 22 16 23 8 0 56 100 119 430 31 55 2,050 28 16 26 9.. __ ...... 0 66 92 117 152 25 44 2,050 25 16 24 10. ___ . __ .. 0 86 98 115 iO 161 35 28 2,050 19 14 20 11.... __ ...... 2 83 101 208 50 18 1,980 21 9.3 23 12 __ .. _ ...... 1 75 89 \" 72 268 46 23 1,900 26 7.9 15 13 __ ...... 50 68 78 1,200 170 19 21 2,050 19 5.4 47 14. _ .. ____ . 8.2 76 46 30 1,900 198 18 23 1,980 77 4.1 43 15 5.6 90 19 40 541 218 30 28 1,770 26 25 29 16...... 6.9 88 6.9 43 258 134 41 52 1,370 19 51 16 17 28 92 7.9 170 189 289 52 492 776 18 38 3.6 18 38 92 0 541 152 248 44 1,150 287 19 31 1.3 19 ...... 54 90 .2 600 143 268 43 1,320 112 14 25 2.8 20_ 62 94 37 289 134 180 23 1,350 50 16 16 26 21...... 126 88 43 134 161 170 36 1,300 20 19 8.2 55 22 ...... 119 86 39 78 268 180 39 1,170 41 15 4.6 56 23 __ ...... 136 86 42 152 218. 189 43 1,150 20 17 2.7 55 24.. ______. 143 86 38 55 430 198 57 1,150 28 25 1.8 52 25...... 152 86 40 66 800 268 101 1,170 21 17 0 44 26...... 143 83 37 75 289 134 89 1,080 22 15 0 32 27...... 152 170 11 86 355 143 117 1,270 16 14 0 34 28 __ _ ..... 127 92 1.7 90 484 86 114 1,400 24 14 1.0 35 29 ______. 124 83 9.6 78 107 66 1,770 21 14 .5 44 30 126 88 101 86 120 30 1,900 14 20 0 51 31. 89 50 83 88 2,270 20 0 NOTE. Braced figures show mean discharge estimated because of Ice. Discharge Feb. 25 estimated from stage indicated by high-water mark. Stream reported dry Oct. 1-10, Dec. 18, Jan. 13, Aug. 25-27, and Ang. 30 to Sept. 4. 186 SURFACE WATEE SUPPLY, 1921, PART XII B Monthly discharge of Big Wood River near Goading, Idaho, for the year ending Sept. Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 152 0 54.5 3,350 November ______170 49 80.6 4,800 December ___ . ___ . ______112 0 55.7 3,420 600 125 7,690 February ______1,900 290 16,100 March.. ______...... 1,400 86 338 20,800 April ______. ____ ...... 117 18 64.7 3,250 2,270 18 659 40,500 June ______.. ___ ..... 2,580 14 1,110 66,000 July...... 77 13 22.6 1,390 51 0 13.0 799 September ______". ______56 0 26.6 1,580 The year ______2,580 0 234 170,000 WARM SPRINGS CREEK NEAR KETCHTTM, IDAHO LOCATION. In sec. 11, T. 4 N., R. 17 E., a quarter of a mile downstream from Guyer Hot Springs Hotel, 2 miles above junction with Big Wood River, and 1% miles west of Ketchum,.Blaine County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 3, 1920, to September 30, 1921, when records were discontinued. GAGE. Vertical staff on left bank, spiked to downstream side of piling of irriga tion flume; read by Homer Bounds and Agnes Barry. DISCHARGE MEASUREMENTS. Made from wagon bridge about 40 feet above gage or by wading. CHANNEL AND CONTROL. One channel at all stages. Banks of medium height. Bed composed of gravel and boulders. Control of same material; practi cally permanent. During summer the growth of moss may affect the stage- discharge relation to a slight extent. EXTREMES OF DISCHARGE. Maximum stage recorded during the period April 4 to September, 30, 2.44 feet June 9 (discharge, 720 second-feet); minimum stage, 0.71 foot September 18, 19, 30 (discharge, 43 second-feet). 1920-1921: Maximum stage recorded that of June 9, 1921; minimum stage, 0.51 foot August 12, 1920 (measured discharge, 26.7 second-feet), ICE. No record. DIVERSIONS. Several diversions above gage. REGULATION. None except that due to diversions. ACCURACY. Stage-discharge relation practically permanent.. Bating curve is well defined between 40 and 600 second-feet. Gage read to hundredths twice daily. Daily discharge ascertained by applying to rating table mean daily gage height. Records good. COOPERATION. Several discharge measurements furnished by water master for Big Wood and Little Wood rivers. -n 7 Discharge measurement&^AWaimv$prings';Ci®iife;',ftfar K#fehum, Idaho, during the period Apr. 4 to Sept. SO, 1921 i.--'" .; :>= ' -M-'n" v,; - :v ;j;£.! v, .;^ , v. ../*r T &l , y '//* :il~ ./,,. ,,,, ! '::ff-!' ' : 'g , < ?' .' ;,' "! Gage "Dis Gage t Dis Date Made by height charge Date Made by height ' charge ' '.:' ' .'. ''.' i , { fe&" 'Sec.<-ft. Fttt *ojNt Apr. 4 1.07 "80.8 July 16 Berkeley Johnson *., ,- , 1-09 87.0 May 10 1.85 325 29 .89 ' 57. 6 i 27 126 568 Augi 2fi Berkeley Johnson .. t.-^ /78 «-P 31 A.O,Fjedler. ....r ,,.. 2,24 592 Sept. 13 .73 , 45.1$ June'24 Be'rfcefey Johnson .. _ 1.4 260 16 Berkeley Johnson __ .. - ''in ' 42.9 July 9 1.22 108 -,!<;'. .; ° Includes 1,2 secpni-feet estimated flow from flume spillway. & Water master for1 Big Wood and Little Wood rivers. j > . , >, ; i, J Daily discharge, in secoaid'-feet, of .Warm Springs Cr^ek near K^tchum, Idaho, for -,- ,,' , ;,,,,:,, %e period Apr. 4 to Sept. SO, 19%!' Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sef|. 1... __ .. 150 557 182 64 45 16...... 89 459 408 82 54 '43.44 2.. _____ SOA 158 65 45 17...... 87 498 349 78 54 a. ..: .... 230 ' -318 150 61 M. 18.....-J1.J1. --87 420 277 75 51 43 4. .. .,...,. , ' (83; 346 524 137 58 45 Ifl. __ ..__ 94 .402 254 75 51, 43 5...... L ... Q9 gftn 550 132 57 45 20...1 __ 94 37? 238 72 1 49 45 6...... J... 98 , 291 592 125 u 45 21 ..'.. __ 100 m 226 69 49 46 7...... '. 103 306 «8fl 114 53 44 22.. _ ..... 120 . S90 22ft 63 48 46 Qfyk S-.w __ - __ * Jlf«i§? :648- 53 45 23...... 384. 234 61 48 46 9...... 316 720 107 52 44 24...... 125 378 250 64 ' 48 46 10 ...... 91 332 655 105 51 44 25.. ____ . 105 378 242 65 48 45 ti .. __ 2: 1 'MI !«4 «4S 101 61 43 26...... 94 896 222 62 48 44 12...... 98 396 662 96 52 - 43 37 -,.,- .,- 87 578 204 61 48 43 13..... __ . 103 396 641 89 51 43 28...... 101 648 186 59 46 43 M~*.~- - 109 592 87 51 43 29 ...... 125 641 193 58 46 43 15...... ' 87 420 498 ft4 5? 44 30...... 147 613 189 56 4fi 43 31.. ____ 578 58 45 NOTE. Discharge interpolated May 16. Monthly discharge of Warm Springs Creek near Kftchum, Idaho, for the period Apr. 4 to Sept. SO, 1921 . Discharge in second-feet Run-ofl in Month acre-feet Maximum Minimum Mean April 4-30 ______... ___ . ____ '...... 147 82 102 5,460 ;3Mlay, ...... _ ,j.i . , -. .,. 648 150 / 383 24,200 720 186 420 25,000 July . _ ,- 182 56 91.5 5,630 65 45 51.7 3,1;80 September __ ..'.. ', ...... ; .. 46 43 44.2 2,630 The period . . 66,)00 , 14234 2 13 SURFACE WATER SUPPLY, 1921, PART XII B TRAIL CREEK AT KETOHTTM, IDAHO LOCATION. In SW. J^ sec. 18, T. 4 N., R. 18 E., at highway bridge a quarter of a mile above mouth and a quarter of a mile south of Ketchum, Blaine County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. July 20, 1920, to September 15, 1921, when station was discontinued. GAGE. Vertical staff attached to left support of highway bridge. Gage used during 1920 was at same location but at a datum 0.15 foot higher. Read by James Wheeler. - DISCHARGE MEASUREMENTS. Made by wading a short distance below gage. CHANNEL AND CONTROL. Bed composed of sand and gravel. Channel winding. Banks covered with brush and may be overflowed at extreme high stages. Control formed by gravel and boulder riffle; fairly permanent. EXTREMES OF DISCHARGE. Data insufficient for deterniination of maximum and minimum stages. . ,-. ICE. No record. DIVERSIONS. Practically none above or below gage. REGULATION. None. ACCURACY. Stage-discharge relation fairly permanent. Rating curve which is fairly well defined between 10 and 320 second-feet used during period. Gage read to hundredths several times a week. Daily discharge ascer tained by applying gage height to rating table and estimating and inter- ':(':, polating for days of no record as indicated in footnote to daily discharge table. Records fair. COOPERATION. Gage-height record and several discharge measurements fur nished by water master for Big Wood and Little Wood rivers; Discharge measurements of Trail Creek at Ketchum, Idaho, during tfie' period May 2 to Sept. 15,1921 G«ge Dis Gage Dis Date Made by height charge Date Made'by *s > ... . height charge feef Sec.-ft. Feet Sec.-ft. A. Q. Fiedler . __ ..... 1.72 203 3& &! 0.80 38. T 23 Berkeley Johnson. .- _ 2.04 294 Aug. 25 Berkeksy Johnson...... 52 17.2 July 9 8. H. Chapman 0 ..". ... 1.52 131 Sept. 13 8. H. Chapman ...... 48 13.7 17 Berkeley Johnson...... 1.15 74.5 15 Berkeley Johnson.... .54 17.5 0 Water master for Big Wood and Little Wood rivers. Daily discHdrge, in second-feet} of Trail Creek at Ketchum, Idaho, for the period May 2 to Sept. 15, 1921 ! Day May June July Aug. Sept. Day May June July Aug. Sept. ,.l-...... 186 236 36 16...... 324 . 86 24 '2...... 41 202 36 17 __ ...... I 0*1 76 22 ' 3. ___ . _ . 15 18 __ ...... } 271 .76 4 ...... 19...... 76 5 ...... 20...... 218 76 168 20 6...... 30 16 21.... ____ . 67 7...... 15 22 ...... AOU . 58 8...... __ . 15 23... ____ .. 342 56 18 9. _ ...... 134 15 24.. ___ . .... 361 54 17 10..... _ .... on 122 9S 14 25.. _ ...... 53 16 11 ___ ...... 111 23 14 26j______. 316 48 16 12.... __ .... 112 24 14 27...... 270 42 15 13.. _ ...... 114 25 14 28.... ___ ... 1 270 35 14 14 ...... 104 26 16 29. ___ ...... 270 37 14 15 ...... QK 25 1ft 30. ___ . .... 270 37 31 ...... 36 1 » NOTE. Braced figures show estimated mean discharge for periods indicated. Discharge interpolated June 29, July 1,10,12,14-16.18,19,21,23,24,27,39,31, Aug. 1,12,13,15,16,24,26-28, Sept. 8-12, and 14. TRIBtrTABY BASINS 189 Monthly discharge of Trail Creek at Ketchumi Idaho, for the period June 16 Sept. 15, 19%1 Discharge in second-feet Run-oflE in Month acre-feet Maximum Minimum Mean June 16-30 ______. ______361 270 292 8,690 July...... 236 35 102 6,270 36 23.0 1,410 18 15.1 449 .The period.. ______'...... 16,800 NOTE. See footnote to table of daily discharge. EAST FORK OF BIG WOOD RIVER AT GIMLET, IDAHO LOCATION. In SW. M sec. 8, T. 3 N., R. 18 E., at Board ranch, three-quarters of a mile above mouth, 1 mile northeast of Gimlet, Blaine County, and 6 miles northwest of Hailey. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. July 18, 1920, to September 16, 1921, when records were discontinued. '-'.. GAGE. Vertical staff attached to tree on right bank; read by James Wheeler. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. Bed ceirfposed of gravel and boulders; rough. One ' channel at all stages. Banks wooded. Control formed by fairly well defined gravel and boulder riffle; fairly!permanent. EXTREMES OF DISCHARGE. Data insufficient to determine maximum and mini mum stages. ' * ICE. No record. ' ' DIVERSIONS. Numerous ditches divert water above for irrigation. No diver sions below. REGULATION. None except that due to diversions. , v < -., ACCURACY. Data insufficient to warrant computation of daily discharge. Gage- height record and results of discharge measurements published-herewith. COOPERATION. Gage-height record and several discharge^ measurements fur nished by water master for Big Wood and Little Wood rivers: Discharge measurements of East Fork of Big Wood River at Gimlet, Idaho, during the period May 2 to Sept. 16, 1921 , , , . Gage Dis Madeby-^ :Gsage Dis Date Made by- height charge Date height charge Feet Sec.-ft. Feet Sec.-ft. July 18 Berkeley Johnson ...... 1.13 71.5 Aug. 24 Berkeley Johnson*-. U- 0.66 18.7 29 .72 24.0 fii 19.9 .56 14.2 16 .66 18.2 ' Water master for Big Wood and Little Wood rivers. SURFACE WATER SUPPLY, #921?: PART XII- B Daily gage 'heighten feet, of Emt-Fovk of Big Wood Riverfat Gimlet, fdtiho, ''for period Mity 2 to Sept. 16, 1921 Day May 'June Jtrty Ao£. Sept. Day May June July Aug. Sept. 1 ...... 1.84 16...... 2.12 0.6« 2...._._. . 1.12 1.70 0.60 17.____. ...-- 1,20 0.56 3.. . .- 6.84 .54 18 ...... 1.84 1.13 4 _.._ .80 19 ____ ... - -** 4*fi 5.,.... . 1.48 20.. ___ .... 1.66 .6&' !,**.__ _ ..... 21 1.05 .57 7...... __ 22...... 1.40 23...... 1.96 .89 i 9 __ ...... 1.58 24 __ ...... 1.60 2.20 .66 10 _ ...... 1.46 2.94 .73 25...... 2.08 " 11 _ ...... 3.20 26...... 12...... -1.42 .54 27. T_...... ?.oo .70 13. _ ..... -.ei"" 28-..-..I---. 2.02 .68 14...... 9 RA .62 9Q .72 15 ____ , 1.35 30.... _ ..... 1.88 31...... T< .<.;: NOTE. Gage not read on days for which no record is given. BIG WOOD SLOTTG5 AT HAILEY, IDAHO ., LOCATION. In sec. 9, T. 2 N., R. 18 E., at highway bridge one-eighth of a mile northeast of steel highway bridge across Big Wood River and one-eighth 6f a mile southwest of Hailey, Blaine County. RECORDS AVAILABLE. June 11, 1915, to September 30, 1921. GAGE. Vertical staff spiked to downstream side of highway bridge, installed April 4, 1917; read by employees of United States Forest Service. Prior to -.. - . April 4, 1917, an inverted stadia board at same location was used; 2.0 foot? mark on stadia board corresponds to 2.0-footmark on present gage. DISCHARGE MEASUREMENTS. Made from footbridge or by wading. ; CHANNEL AND CONTROL. Bed composed of sand and gravel. Banks covered with brash anjd siiifjelct to overflow. One channel at all stages. Control is top of a wood-stave water pipe, laid in bed of stream about 15 feet below gage» = overlaid with gravel and sand; subject to shift. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 3.0 feet June 6 (discharge, 419 second-feet); minimum stage, 1.58 feet October 3 (dis charge, 66 second-feet). 1915-1921: Maximum stage recorded that of June 6, 1921; minimum dis charge, 0.9 second-foot March 21-24, 1919. ICE. Stage-discharge relation not seriously affected by ice. DIVERSIONS. None. REGULATION. The amount of water passing gage is affected by load at power plant half a mile upstream, and there is considerable diurnal fluctuation. The main river is affected inversely by any such regulation, so the accuracy of the summation of the two records is presumably affected only slightly by this factor. ACCURACY. Stage-discharge relation not permanent. Two fairly well defined rating curves used, one applicable October 1 to November 18; the other applicable November 20 to September 12. Gage read to hundredths once daily. Gage-height record reliable except as noted in footnote to daily discharge table. Daily discharge ascertained by applying daily gage height to rating table. Records fair, COOPERATION. Gage-height record prior to July 1 furnished by Idaho Irrigation Co. Several discharge measurements furnished by water master for Big Wood and Little Wood rivers. BASICS Big Wood Siougha^a, natural channel of Big Wood Ri^er that is utiliitod aMo as a tailrace for the Hailey power plant. Record from this station represents a portion of the natural flow~of Big Wood River arid taken in conjunction with the record at ttfe Hear4>y station on the main river (see p. 172) will show the entire flow of the river at this point. For record of the combined flow of Big Wood River airid Big W«od Slough see pages 173 and 174. Discharge-Measurements of Big Wood Slough at Hailey, Idaho, during the year,fend" Hi : _ ing Sept. 30, 1921 Oage Dis- -f Gage JMs- ( Date Made by height charge | Date Made by height charj?e I Feet See.-ft. Feet Sei.ji. D«c. 13 2.00 150 May 27 2; 16 179) Jan. 7 1.92 134 30 A. Q. Fiedler __ ..... 1.88 131 30 . do., _ __ ...... 2.08 160 July 19 Berkeley Johnson ...... 2,20 19ft A. G. Fiedler .. __ ... 2.10 170- 29 2.2# 19* IP .....do. 2.14 179 Aug. 10 ..... do... 2.25 105 do. . 2 AQ 272 23 2.26 203 19 2.41 - - 233 Sept.- 1216 S. H. Chapman.. 2.40 $23 25 " 2.24 ' 200 2.42 233 Water master for Big Wood and, Little Wood rivers. ; Daily discharge, irt second-feet, of Big Wood Slough at Hailey, Idaho}'ffir ~ Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. i Sfcpi 1-. _ _ _ii_- 69 165 132 151 147 151 27ft 299 180 : i,211 25t 211 2 69 165 170 149 143 151 284 211 170 180 222 QOQ 3...... 66 165 170 143 142 151 314 257 170 132 %X* OQQ 4,--^ ^i. ,: 6» 165 151 142 140 . Mi: 257 . 170 190 132 1..222 9MP1 5. ______. 117 165 151 141 143 180 245 222 314 srt 233 257 , 106 165 . 151 140 132 '190180 233 233 4J9 200 222, 257 ' 113 165 151 134 132 245 245 245 211 UJ 222" OJK 8 _ . ___ .. 113 165 160 136 180 245 257 190 911 » 91 1 *)A K 9...... 113 179 156 . 132 136 180 , 245 284 211 222 211 222 10...... __ 179 179 151 '136 - 140 180 257 . 284 199 211 211 * * 21 ___ ...... 165 151 151 136 180 233 180 911 Ortfl 200 22 _ ...... 151 151 140 180 257 OOQ OQQ 23 165 ' 19ft 151 1Q9 136 180 941 QQO 2OO 211 24 165 151 14Q 136 18C 245 190 ion OQO 999 26...... 165 147 147 136 to*) iso 999 911 211 OQQ 222 "26 151 141 ISO 222 9B4 ooo 190 AQO 225 27 , _ ...... 179 147 lAq IQO 160 190 91 1 ooo OrtA 28- ...... 128 151 14/1 tfin ion 211 190 ooo 009 222 29 ...... 165 14/1 147 iqfi 180 9SM 91 1 Q*4 OQ9 OOQ ,30-,.^ _ _ _ 165 151 160 151 257 270 160 OQQ 233 111 31 __ ...... 179 160 i4n 257 151 233 911 NOTE. Braced figures show estimated mean discharge for periods indicated. Discharge estimated because of inaccuracy of gage readings Sept. 12-15 and 17-30. Shifting-control methods used Nov. 19. Discharge interpolated Nov. 29, Dec. 9, 15, 24, Jan. 4, 5, 20, Feb. 3, and Mar. 25. 192 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of Big Wood Slough at Hailey, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum - Mean 179 66 140 8,610 265 128 164 9,760 170 132 149 9,160 160 132 142 8,730 160 132 140 7,780 267 151 184 11,300 April...... 314 211 251 14,600 314 151 232 14,300 June. .... ______. ... 419 151 223 13,300 July...... 233 80 200 12,300 257 200 222 13,600 September..- ______257 211 235 14,000 419 66 190 138,000 CAMAS CREEK NEAR BLAINE, IDAHO LOCATION. In sec. 15, T. 1 S., R. 16 E., 500 feet below sheep bridge, a quarter of a mile north of Macon siding on Hill City branch of Oregon Short Line Railroad, 1^ miles-belew railroad crossing, 2*4 miles .above backwater of Magic reservoir, and 4 miles southeast of Blaine, Camas County. No tributaries or diversions between station and Magic reservoir. DRAINAGE AREA.-' Not measured. RECORDS AVAILABLE. May 9, 1912, to September 30, 1921. Results of dis charge measurements made in 1911 by Idaho Irrigation Co. are also avail able. GAGE. Gurley water-stage recorder on left bank; installed June 1,1916. Lallie water-stage recorder at same location used prior to 1916. Location and datum of gage unchanged since 1912. Gage inspected by deputy water masters. DISCHARGE MEASUREMENTS. Made from sheep bridge or by wading. CHANNEL AND CONTROL. Bed of stream is rocky but control somewhat shifting. One channel at all stages. Point of zero flow determined August 24, 1921, as at gage heights 0.52 foot ±0.05 foot. EXTREMES OP DISCHARGE. Maximum stage during period June 1 to September 30 from water-stage recorder, 5.15 feet at 4 a. m. June 3 (discharge, 870 second-feet); discharge June 1 estimated mean for day, 920 second-feet. Minimum stage, 1.12 feet August 30, September 13,14 (discharge, 4.4 second- feet) . A lower stage and discharge probably occurred during period of no record. 1911-1921: Maximum stage recorded, 10.76 feet April 12, 1916 (measured discharge, 5,240 second-feet); minimum stage, 0.89 foot 4 to 6 p. m. August 17) 1920 (discharge, 2.3 second-feet). These figures probably do not repre sent actual extremes. ICE. Records discontinued during winter. DIVERSIONS. Many small diversions are made above station, but no data are available concerning them. REGULATION. None. "TRIBUTARY BASINS ACCUBACT. Stage-discharge relation not permanent, shifts within fairly well defined limits. Rating curve is well defined between 4 and 900 second-feet. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph, except for periods indicated in footnote to daily discharge table. Records fair chiefly because of changing channel conditions and breaks in gage-height record. ' COOPERATION. Gage-height record and number of discharge measurements furnished by water master for Big Wood aiid Little Wood rivers. Discharge measurements of Camas Creek near Blaine, Idaho, during the period June 1 to Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge JPe«e Sec.-ft. Feet :8ec.-ft. A. G.Fiedler..,...,..^ 5.14 860 July 21 8. H. Chapman ____ , 1.48 14.2 15 3.63 419 28 1.38 10.8 25 2.51 ! 138 . .do...... 1.23 7.5 July 3 2.03 62.0 11 .....do...... 1.17 4.8 14 __ .do,., ___ ...... 1.61 24.2 24 1.17 5.5 18 Berkeley Johiosdn __ .. 1.52 17.8 NOTE. Chapman associated with office of water master for Big Wood and Little Wood rivers. Daily discharge, in second-feet, of' Camas Creek near Blaine, Idaho, for the period June 1 to Sept. SO, 1921 Day June July Aug. . Sept. Day June July Aug. Sept. 1. _____ . .... 920 90 9.2 16 __ ... _ . .... 366 21 5.8 4.5 2...... 870 81 14.0 17 __ ...... 337 19 5.4 45 3. .. __ .... 838 62 8.0 1 18 ___ ...... 293 18 5.4 4.5 4 ...... 714 67 6.8 19 __ ...... 250 17 4 9 5... __ ... 684 56 6.3 20 j 228 17 5.6 .208 5.4 9 ...... 684 52 6.0 4.5 2i...... 16 7...... 699 47 5.8 22..;..--...... 178 15 8. ..-._.. ..___ 653 44 5.8 23 __ ... _ . __ 158 14 5.7 -9 _ . 623 40 5.0 t)A 14 5.3 10 ,:...._.._. _ 588 30 5.4 25 __ ...... 137 14 5.3 11 --....-...... 554 35 5.3 26 __ ...... 123 14 5. 1 5.8 12... ____ . .... 520 31 5.4 27 __ ...... 113 12 5.3 13... ____ . ... 463 28 5.8 4.4 28 .. ..,. .. OQ 11 M 6.0 14...... _.._ __ 435 6.0 '4.54.4 29 ...... __ .. 90 10 4.5 15. .... 380 22 5.8 30.-.-.--..- .. 101 9.2 -'". 4.4: 01 8.6 44 1 , NOTE. Braced figures show estimated, mean discharge for periods indicated. Discharge estimated or interpolated June 1, 10, and 11. '' ' Monthly discharge of Camas Creek near Blaine, Idaho, for the period June 1 to Sept. SO, 1921 , ; Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 99 418 ; 24,800 90 8.6 30.5 *;S80 August ______...... 14 4.4 5.93 365 September ___ . ______. __ ...... 499 297 27,300 SURFACE ,' '1921]'" PART XII B LOCATION, In SW,-,K ^W.^se^'S^'T. 2.-N,,' R/'''j2 Gage Dis Gage Dis Date' Made by height charge Date Made by height charge Feet Sec.-fl. Feet Sec.-ft. 1.33 0*62.8 A. G.Fiedler^ _ ...... 3.72 825 Feb. 1 do...... 656.9 July 20 1.60 150 Mar. 11 1.56 6101 Aug. 21 1.13 66.8 Apr. 6 do...... 6331 Sept. 14 do...... 1.12 63.8 MI Stage-discharge relation affected by ice. *> Measurements made about 4 mites below gage. Daily discharge, in seeondffeetr $fI4til$ Woe&Rwer near-Carpy, Idaho, for the year ' ending Sept;SO* f9%i - 31 NOTE. Braced figures show estimated mean discharge for periods indicated. Discharge' measurements uped. Dec. 19, Feb. 1, Mar. 11, and Apr. 6. , MoniHty1 " discharge " ">; of " Little ' '.. Woodjtiyer ' SO, near 19%1 Carey, '" Idaho,' ' for the year ending' ' ' 'Sept' Discharge in second-feet Month > ^acre'-feet Maximum Minimum Mean . : fl 6ct6ber...:...:;::lj....i....l...i _ ... . _ !:_ ..: _ I'. 41 . 60. o' ' ; ' 3,690 ! :< , < <.' , n 4,460 December. ______«65!l 4,000 January «,.. _-..TM __ ^..<,_ _ .,- * _ :... , ...... __... . -55.0 February..!,....;:-'--:. __ :.l-i..'-'. __ ::. '.. __ '. _ ' ... ' ! ^* * , . . *'''', -.T;-. .'- -68. 5 March ______.. _ ;.'.'. _ _ ._ _;; - v^ 238 146 8^980 April , __ . _, _ ,. . ... ____ , _ , _ ., .. 850. 491 29^200 Myy ...... 4...... 761 June '» _ , ' . *i -j. -iu 4 .-. --- . 384 609 Joly " ' " ' 92 182 11,200 August" .__ I!.. . .. ___ I ______,.r. 116 59 75.4 September..' __ ...... , __ . ___ ] ...... ts 61 64.5 3,' 840 ; ; The year . ______. _ :;'_ __ r..L ___ i.,... M ": 968 226 164,000 i >f* 1" i ti . r~>- it. ,l.i. . il -* 'Estimated 14234 25 r-14 SURFACE WATER SUPPLY, 1&21, PART XII B LITTLE WOOD RIVER ttEAR RICHFIELD, IDAHO LOCATION. In sec. 30, T. 4 S., R. 20 E., half a nwle above heading of Dietrich ,canal and 1 mile east of railroad station at .Richfield, Lincol,n County. DRAINAGE ABBA. Not measured. RECORDS AVAILABLE. January ly 1911, to September 30, 1921. GAGE.- Gurley water-stage recorder on right bank; installed April 14, 1920, at same datum as former vertical staff; read during irrigation season by em ployees of the Idaho Irrigation Co; and G. T. Parkinson. Original vertical st^jl gage was carried out by ice March 12, 1913, and replaced March 27, 1913, at same location and datum. Gage was raised 1.00 foot. September ".;-.- 5, 1918; records prior to October 1, 1918, corrected to original datum. DISCHARGE MEASUREMENTS. Made by wading or from suspension footbridge a few feet below gage. , . CHANNEL AND CONTROL. Bed composed of coarse gravel and small rocks; rough. Control probably permanent. Stage-discharge relation may be slightly affected during summer by light growth of aquatic plants. EXTREMES OP DISCHARGE. Maximum stage during year from water-stage recorder, 3.22 feet 2 to 4 p. m. June 13 (discharge, 535 second-feet); Higher stages occurred during winter but stage-discharge relation was :, seriously affected by ice. Minimum discharge, about 72 second-feet Jan- uaify 10. ^ i - .- 1911-1921: Maximum stage recorded, 4.5 feet (original datum) May 17,- 18, 1911 (discharge, 722 second-feet); minimum stage, 0.52 foot (present datum) June 24, 25, 1920 (discharge, 7.6 second-feet). ICE. Stage-discharge relation is seriously affected by ice. : - DIVERSIONS. Small ranqh diversions are made above station. Dietrich canal diverts a short distance below. REGULATION." None. ./,,..-- ACCURACY. Stage-discharge relation practically permanent during year, except as affected by ice December 14 to February 27. .Rating curve which i^ well defined between 60 and 490 second-feet used during the year. Consid erable difficulty experienced with operation of inlet pipe; recording- gage record was corrected on basis of outside staff readings. For days when recording gage was in operation daily gage height was obtained by inspection of recorder graph. Records good. COOPERATION. Gage-height record furnished by Idaho Irrigation Co. and ,,i; water master for Big Wood and Little Wood rivers, who also furnished > most of discharge measurements. measurements of tattle Wood River near Richfield, Idaho, during the year ending Sept. SO, 1921 Gage Dis Dig- ; Date Made b/ height charge Date jMadeby height charge Feet Sec.-ft. Feet Sec.-fk: Dec. 10 L. L. Bryan __ __ ,. 1.73 139 June 4 G. T Parkinson* __ ". 3.10 502 Jan, 10 .. do ___ ...... 2.94 72.1 12 .....do...... 3.22 542 Feb. 3 .....do ...... 2.98 122 21 .....do ...... 1.62 124 Mar. W A. G. Fiedler.--.:.:... 1.8T 160 28 .....do...... _ . _ ... 1.34 77.1 30 8. H. Chapman 6 ...... 2.04 203 July 3 .....do...... 1.33 75.2 Apr. 1 A. G. Fiedler ...... 2.06 195 17 .....do...... , .1.45. 93.9 11 2.18 235 22 Berkeley Johnson...... 1.60 98.2 May 8 __ do ...... 2.76 390 Aug. 20 . .do...... 1.60 118 29 A. O. Fiedler ...... 2.86 438 23 G. T. Parkinson* __ .. 1.63 122 3.10 490 Sept. 17 1.78 147 « Stage-discharge relation affected by ice. * Associated with office of water master for Big Wood and Little Wood rivers. discharge, in$econd-feM,of Ettttt Wood "Ewer neat Riohfi&d, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1...... 112 134 138 « 130 202 344 486 78 ; 102 m 2...... 112 134 137 139 204 329 486 76 / 98 134 3.. _ , ...... 112 134 120 114 121 158 208 344 486 76 "9999 I3o 4... _ ...... 112 134 117 173 219 360 486 76' 136 5 ...... 134 120 181 220 360 486 »T 82. 139 6...... 113 132 136 169 222 375 518 93 102 139 143 7...... 113 134 137 165 224 '390390 518 96 105 8 ...... 120 134 141 96 165 226 518 89 112 145 -120 134 145 163 228 406 518 112 145 10 120 134 130 160 228 390 535 93 112 146, '518 11...... 124 80 154 226 390 96 107 148: 12...... 125 125 152 228 375 535 92 105 148: 13. ___ ...... 129 115 158 246 375 535 93 109 , 148: 14 ...... 140 165 263 360 518 93 109 148; 15. .:. 311 344 470 93 107 16... _ . _ . ... 169 314 344 406 91 105 146 17.. _ ...... 145 169 314 344 360 92 104 148 18 146 132 105 169 311 360 274 91 107 145 19...... 130 148 191 314 375 189 93 107 115 20...... 146 206 329 375 160 93 115 148 21 146 103 204 344 360 143 93 115 150 22.. __ ...... 146 197 360 360 112 99 117 152 23..... __ .... 143 195 375 329 ,92 102 118 URt 24... ___ .. ... 143 195 406 305 84, 104 124 154 26 ...... 141 212 390 329 ' 77 105 129 ""''77 26...... 136 143 224 375 344 104 129 14ff 27...... 136 143 116 212 ' 344 375 80 104 127 150 28 ...... 136 139 127 197 . 328 406 ' 8281 104 130 150 29 136 134 120 197 311 438 104 134 150 30_...... 136 200 329 454 71 ,104 134 152 31.. ______132 202 470 102 136 NOTE. Braced figures show estimated mean discharge for periods indicated. Stage-discharge relatioqg affected by ice Dec. 14 to iFeb. 27. Discharge interpolated Oct. 4, Apr. 5-8, ^.apff'Sept. 21-23. Monthly discharge of Little Wood River near Richfield, Idaho, for the ye/ar endina Sept. SO, 1921 Discharge in second-feet ' ( . -'- Month Run-off in acre-feet Maximum Minimum ' Mean , October ______136 112 126 7,750 148 132 . 139 8,270 145 127 7,810 Jalmiary...... 98.1 6,630 112 6,220 March...... ,...... 224 130 179 11,000 April...... 406 202 287 17,100 470 305 371 22,800 June ______.... 535 73 330 19,600 July...... -. ...-...... 105 76 93.7 5,760 August ______...... 136 99 113 6,950 154 134 146 8,690 535 177 128,000 SURFACE WJOXX&&6S99ST, PA®* XH B FISH CREEK ABOVE DAH, NEAR CARET, IDAHO \ LOCATION. In sec, 2, T. 1 N., R. 22 E., 1% miles above entrance of West Fork of Fish Creek, 2 miles above dam of Atlas Development Co., and 14 miles northeast of Carey, Blaine County. DBAINAOE AREA. Not measured. » RECORDS AVAILABLE. May 3, 1920{to* September 30, 1921. GAGE. Stevens water-stage recorder on right bank; inspected ta^ employees of the Atlas Development Co. Gage is set to read head on Cippoletti control weir below. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. Bed, composed of coarse sand and gravel; right bank high and not subject to overflow; left bank low and may be overflowed at .; t, high stages. Control formed by 18-foot concrete Cippoletti weir 8 feet; f>, below gage. . , - EXTREMES OF DISCHARGE. Maximiim stage during year from water-stage re-: corder, 1.60 feet at 4 p. m. May, 17 (discharge, 136 second-feet); minimum T stage, 0.13 foot at 1 a. m. October 7 (discharge, 3.0 second-feet), 1920-1921: Maximum stage recorded that of May 17,1921; minimum stage,0.10 foot August 24 and 25, 1920 (discharge, 1.9 second-feet). ICE. Stage-discharge relation affected by ice. diversions above gage. .^ Noae except that due to diversions. ACCURACY. Stage-discharge relation changed during winter affected by ice De cember 1 to January 15. Rating curves are well defined. Daily discharge -.!'"" ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph or by estimating for days of no record, as noted in footnote to daily discharge table. Records excellent when recorder was in operation; records fair December 1 to April 13, COOPERATION.- Gage-height record furnished by Atlas Development Co. Discharge measurements of Fish Creek abdve dam^ near Carey, Idaho, during the year ending Sept. SO, Gage Dis Gage Dis Date Made by height charge Date Made by height charge t< Feet Sec.-ft. Feet Sec.-ft. Dec. 17 L. \, Pn?an ...... 0,68 »10. 6 July 15 0..36 13.9 A (% ITiA/tlAT QQ 68. 1 Aug.21 . do ..24 7.5 ; iV 27 Berkeley Johnson ...... 49 22.8 Sept. 13 ..-..do ...-.-.- .-. :27 fc2/ - .: : ) : > "{ « Stage-discharge relation affected by ice. TKIEtTTAIEf BASICS Daily discharge,1 in second-feet, of/Fish Cxeek aikove dam, near Ctoxey, I daho, for the year ending Sept. SO, 1921 Day Oct, Nov. Dec. Jan. Feb. Mar. Apr May June July Ai^g. .Sept. !--:--U 1 _ ..-._ .._ - . 10. 82 79 24 9.0 V-fe* 2 __ ...... 4.0 10 96 71 22 '*'*' !-'TM ;8....,...... J 4. '4 , 10 13 109 68 21 8.5 r.,6 4. __ ...... 4.0 10 29 110 68 21 9.5 8.0 5 1,..^.. . 4,0 10 118 68 19 9.« 9.0 ' \ 8.5' 6...... _ .. 4.0 10 13 123 69 9.0 7.... __ ..... 4.0 10 3(5, \ 757K 120 66 8.57.1' SJ5 0 6.8 10 116 61 K 9!o fe-'-z^r-rr 6.8 ' 10 12 9 113 68 17 X * 7.1 'iV6 8.5 W.».....T...... 8.2 10 13 36 109 < 54 17 6.6 11..,...... ^. '8.2 I2i 106 4» 17 6.6 8.5 IZ^-,-,^,.--.. 7.7 11 102 I 45 16 6.6 8.5 13i...;.i^....- 8.2 w 13 36 99 41 15 : 8 6 8.5 14 _____ ..... 7.7 10 99 96 40 15 6.2 9.0 15. _ ..... _ .. 8.2 10 87 103 38 13 6.2 8.5 '"'9*0 16 .....4...... 8.6 10 10 ,14 4I> 84 109 36 13 6.6 17J ...... ' 8.6 12 8ft 126 33 12 6.'2 9.5 18 _ ...... _ .. 8.6 14 92 125 30 12 6.2 9.0 19...... 9.5 17 100 . 109 30 11 6.6 ao SO..,..,-.'. .. 9 5 -16? .. i. ~ 12 'TK ,. 45 - 102 94 28 9.9 6,6 9.0 , ' 21 . . .'..... 10 14 103 ' 87 26 9.0 «:6 9.0 22...... 10 ' 14 103 80 24 9.0 7 1 9.0 23. _ ...... 10 14 14 126 76 22 9.0 7.6 9.0 24...... 10 18 46 114 79 .21 9.0 5H6 8i5 25....:. _ .... 10 14 10 101 108 19 8.5 7.1 ,8.5 26...... 10 14 14 87 103 18. 8.6, 7.1 , "K5r 8j5 11 14 21 48 78 100 23 9.5 6.6 28 '' ' 11 14 22 78 109 23 9. ,5 ; 7,1 rA5 29.... ___ ^.... 'ir11 , . , _ 76 105 24 9.5 6.6 8.5 30...... _ .... ) » 14 |,. 80 84 24 9.0 6.6 9.5 31..«..:.,:.^. 10 14. 87, *.;8 ; 6.6 , NOTE, Braced figuce&show estimated mean discharge fqr periods indicated. Discharge ftJsiq estimated Jan. 31 and Feb,28'anainterpolated May7-12,Jiine'l4,20f,21,28,and 29.' .,., ' Monthly discharge of 'FieU-Creek «rf>60« dam, near Carey, 'Idaho, for the.year> ending . . . ' . , : .. ', ") -J . ^ r -:' »;V(i '-: .<>', . - Discharge in second-feet v Run-off in Month acre-feet Maximum MInlfiHim' Mean October ____ i ______. __ . _ ...... 11 4.0 8.05 495 Novetaber __ .r..L ______....r.: ___,. .... 17 10 12.1 720 11.1 682 ' -.iM41. 1 ", ,.ft82 ||bruar^,.....t...... ,, ...... H.rt...,.^... r._ ' .; Jis March._;u._ ; _ ... . j si l.^., ! .. r " ''-fit-'' , - . 2,450 Apnl ...... 4...... j...... :;. _ .... 126 ' , ' 5,OfO 125 - " /fr iea «,530 79 188.5' , K%&* - * ' ;i?,490 842 July...... 24 August . ______9.5 6.2 7.27 447 September ______. __ ... __ _ .... 9.5 6.6 8.59 511 126 4.0 29.8 21,600 200 SURFACE WATER SUPPLY, ,1921, PART XII B WEST FORE OF FISH CREEK NEAR CARET, IDAHO LOCATION. In sec. 3, T. 1 N., R. 22 E., 1M miles above confluence with Fish Creek, 2 miles above dam of Atlas Development Co., and 14 miles northeast of Carey, Bjaine County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 11, 1920, to September 30, 1921. GAGE. Stevens water-stage recorder on left bank; installed May 3, 1920; inspected by employees of Atlas Development Co. Gage is set to read head on Cippoletti control weir below. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. Bed composed of coarse sand and gravel. One channel at all stages. Control formed by concrete Cippoletti weir with 12-foot crest for high stages and 6-foot crest for low stages. Crest of weir was changed from 6 feel to 12 feet on March 19. Stage of zero flow at gage height 0.0 foot. EXTREMES OP DISCHARGE. Maximum stage during year from water-stage recorder, 0.99 foot at 4 a. m. April 23 (discharge, 40 second-feet); minimum stage, 0.05 foot October 17-19 and 21-26 (discharge, 0.2 second-foot). 1920-1921: Maximum stage recorded that of April 23, 1921; minimum stage, 0.02 foot at 8.30 p. m. August 8, 1920 (discharge, about 0.1 second-foot). ' '-. ICE. Stage-discharge relation slightly affected by ice. DIVERSIONS. One small diversion above. REGXTLAT ION. None. AcctiRACY. Stage-discharge relation changed March 19 due to change of control from a 6-foot weir to a 12-foot weir, slightly affected by ice during December and part of January. Two rating curves used which are well defined up to 9 second-feet; one applicable October 1 to March 13, the other applicable March 20 to September 30. Daily discharge, ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph. Records for period recorder was in operation excellent; others fair. COOPERATION. Gage-height record furnished by Atlas Development Co. Discharge measurements of West Fork of Fish Creek near Cqrey, Idaho, during the year ending Sept. SO, Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Dec. 17 L. L. Bryan ...... 0.06 0.4 July 15 0.08 1.9 ,A.G.Fiedter...... 36 8.4 Aug. 21 .. do ...... 04 .4 27 .15 2.4 Sept. 13 .....do ...... 06 .4 *» a Discharge estimated. Daily discharge, ^,x o^ ; the year ending Sept? ;..Day . Cfct,, No. . D«c. Jan/ Feb. Mar, Apr. ,May Jun^' .July ' A"?-/) ,Sept, 1...... 0.5 0.3 0.3 20 8.4 1.5 - ' 0..6,.5 , '- A3 * 2...... 4 .3 .3 20 7.3 1.5 6.6 1.7 .6 ' '*.» 3...... 3 .8 O 21 4...... 3 '- '"IS.3 1.0 20 6.6 1.7 .4 g 5...... 4 20 '6.6 1.8 -.3 .. /.; A ' ':i ,,-3 - y*:' ' 6...... , .3 .3 20 10 1.1 ? 7...... 5- ' '.-3' .'1,2 i 20 19 8.7 1,1 ->-:.3: '".Hi 8...... 5 .3 18 7.0 1.1 .3 9 ...... 5 .3 0.3 .3 '' > 17 fl.3 1.1 .3 -1 , .5 1 A ,, .4 10...... U.,.. 1.2 6.0 1.1 ll-....i.-.;...:: ,' '; . 4 15 5.7 : 1.1 .3 '-' :'-- .4 12...... 4 .3 .3 14 5.0 1,1 ' " .'S.3 .4 13. _ _._...._:_ .3 .3 .3 1.2 19 4.8 1.1 H .., , ,.-.>.* .8 , 26 12 4.4 1.1 Q v * 15...... 3 .3 24 12 4.4 .9 " i 16._.._ _.__._.. .3, .'- .3 .3 .3 4 0 22 11 4,8 .8 .3 17. _ ...... _ .2 .3 .3 22 12 4.4 .8 '.3 18..., . __ .. ,2 .8 23 12 4.2 ,.8 3i 19...... 2 .3 24 12 4.2 .8 .4 20. __. . .3 .3 .3 .3 6.6 24 12 4.2 .8 .4 .4 ' 24' 21 _ ... __ . ... .2 3 11 3.9 .8 .4 .3 22 __ ...... ,2 ,,. 25 9.5 3.9 .8 .4 .3 23...... 2 .3 32 '018,7 3.9 .8 .4 .3 24 __ ...... 2 .5 s n 24 3. 6 . 9 -:i .3 25 __ ...... 2 .3 24 13 3.3 .9 .4 .4 26...... ,. ... .2 .3 . c 23 11 3.3 .9 .4 .4 27...... 3 .7 9.5 22 S d 3.3 .8 .3 .4 28..,. ... .3 .7 21 9.5 3.1 .8 .3 .4 29 ____ ...... 3 20 9.5 2.8 .8 .3 .4 30 __ ...... 3 I" 20 8 A 2.1 .3 .4 31 ...... 3 .3 8.7 .6 , -.:..., . ' ' NOTE. Brac«d figures show estimated mean discharge for periods indicated, estimated because of no , .and slifcnfFy affected fey ice during December and part of January. Discharge also estimated or '. 1, {il, TO. 28, Apr. '26-28, May 7-12, Jane 5, 6, and July 17-20. Monthly discharge of West Fork of Fish Creek near Careyf ldqho,for the year ending Sept. SO, 1921 Discharge in second-feet 'Run-off in Month acre-feet Maximum Minimum Mean October- ______. ______. _ ...... 0.5 0.2 0.319 19.6 .300 17.9 .300 18.4 January. ,. ._ .300 18.4 .371 20.6 March...... _ _ . 4.71 290 April...... _.. _. . 32 22.0 1,310 May. ». . . . . 21 8.0 13.6 830 June^ ...... ,.. 2.1 5.09 303 Joly...... 1.7 .» 1.01 62.1 .6 .3 .358 22.0 September . ______. ______...... 4 .3 .367 21.8 The year ...... 32 .2 4.06 2,940 SURFACE WA^feJS , 1621,' PART XII B SILVER HEAR - PICABO,'' IDAHO' LocATioN.-T-In gee. 1, T. 2 S., R. 20 E., at Brett ranch, 1J^ miles below mouth of drain ditch of Blaine County Drainage Distr&l No. I and 3 miles (South of Picabo, Blaine County. DRAINAGE AREA.- Not measured. ' ' ; ^ RECORDS AVAILABLE. May 25, 1920, to September 30, 1921. GAGE. Friez water-stage recorder on left bank 450 feet, belo^r Brett's ranc$ house; inspected by employees of Blaine County Drainage District No. 1, DISCHARGE MEASUREMENTS. Made by wading a short (distance below gage. OHANNEL AND CONTROL. -Bed composed of rqck overlain with gravel. Control 0jE ' same material; probably permanent: Stage-discharge relation affected by growth of moss. One channel except at high stages, when water flows in* (.' by>pass channel on left bank. . , OF DISCHARGE. Maximum stage during y^r, from water-stag©; recorder, 3.05 feet 6 to 11 p. m. March 24 (discharge, 283 second-feet); '. a .higher stage occurred during winter, but stage-discharge relation was; affected by ide. Minimum stage recorded, 1.16 feet at 8 a. m. and 6.36' r' , p. m. May 17 (discharge, 80 second-feet) . 1920-1921: Maximum stage recorded that of March 24, 1921; minimum stage, 0.48 foot at 7 p. in. June 2, 1920 (discharge, 26 second-feet). ICE. ^Stage-discharge relation seriously affected by ice. DIVERSIONS. Numerous -diversions for irrigation above. Part of season some water diverted around gage on right bank tihrougfh 'a small slough, which. 1 heads about 300 feet above gage. ' . _ ^ REGULATION. None, except that due to diversions. - ;: ~ AccuRACY.-rr-Stage-discharge relation not permanent; affected by aquatic growtitt ^ndj3y ice duiing December, January, and part of February. Two 1 W«J|t^iefiMe4 curves and numerous curves '" " dis0|iarge meaaiurejaiwits used during the /^y used June 8-23, August 1-5, August 21 to September 13. Gage-height v ; record satisfactory %kefept for surge which makes it'diffifc^ilt t» read gagfe'^^HtM- refinement. Daily discharge ascertained by applying to rating table mean " daily gage height obtained by inspection of recorder graph. For "flow in" ., m^ip. chantfel recbrds are gbod. For flow in by-pass around gage see foot ! note to table of monthly summary. COOPERATION:1 Gage-height record furnished by Blaine County Drainage Dis trict No. 1 and several discharge measurements furnished by water master |= for Big ;.Wood and Little Wood rivers. " ," ; .ju ;,i> ; .- ' * K ...... ".j.'l.l ->A( I Discharge ifieasurements of Silver Greek near Picabo, Idaho,-during the year ' :; - Sept.30,1921 - ,- ... Gage Dis Gage ' Date ; Made by charge Date . . .Made by . ":" -height ^ : Feet "Sec.-fl. JFeet , Sec.- ft. Dec. 12 L. L". firyan."-...... 1.56 'June 24' s-H-cia tout 1.S9 ' 116 -- 107 July 1« ---...da^...,.^.^-.... 1.81 -186 Feb. 2 .....do. . .. -.- 2.48 156 19 1.86 153 Mar. 12 A. G. Fiedler...... 2.16 182 G. T. Parklnson* ..... 2.04 158 -...do ...... 2.08 172 16 2.00 152 P 27 8. H. Chapman &.._... 1.69 20 Berkeley Johnson ...... 2.10 164 May 26 . _ .do ...... 1.35 97.3 Sept. 14 2.35 A. G. Fiedler... ___ . 1.68 131 14 2.33 175 » Stage-discharge relation affected by ice. 6 Associated with office of water master for Big Wood and Little Wood rivers. c Estimated 1.0 second-feet additional in by-pass. d Measured 6.0 second-feet additional in by-pass. Daily discharge, in secon'atfeei; of&itvei CreeK neUf~'Pica bo'?Idaho, for the year end- il; , ..,,.- ..,.,-, ,,/,,,-.,,}, ing Sept. 30, 1981 < . ?/ .-[. .,^-r Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May JjJne July AW ' Sept. l - .... 142 .iftwi 168 j. 142 1*0 i 135 , 181 -. .01* ,161 03& a...., ,- ... 143: 164, [ 154 145. i .173 150 ,162 178 3 142' " 161 ' 148 168 ' 157 : ! W3- ''-177 4_ ..;..:....- 142 ! 183 158 147 .164 ;,,167> 127 14'9150 -. ,133 - fJW- , 178 5,.. . _ . m 163 147 185 172 126 1.S& ,:fm 178 ''.;'.»(;; .' i ,' 173' "".iga 6...... 143 159 145 181 124 145 Ift'14fi 183 7. ____ ...... 147 160 J 129 177 ' : 176 125 132 Hi 182 i 120 1 '177 129 160- 183 8. _ ...... 148 162 } 143 176 124 9. . _ 147 ,162 >i 175 ' 174 123 131 148 * ioV 17Q roi 153 159 ^lOS' 145 17& -- 168 124 12ft " m 11S4 .J'^178 I'V: >! 144 " 144' ''' Wt 11 _ ...... 159 ' 157 ' 175ton 163 1 115 121 178 in! 160' hWTU 143 162 1H; s 118 443. 1150, ISA is. 160 160 144 190 165 no 108 143 155 182 14 .. 160 166 149 212 180 107 100 145 .' Monl^ty - [dischd'f^e=. o^^lv'er-- -' i:'Cree}c' near PicaM,'Ittdht), for the y'e'ar''ending' Bepl. 30, ' Discharge in secorid'-fe'et* " ' : . . Month 'Sun-off in '.> / ' 'fi.iV, sjr i .v; t-:. - . ;. .'v ...... stpce-feet RiaXimum Minimum ' Mean' ' '' :138 oct(Aier..-..:...:.l.±^iiL...... :.-.:.:..: '178 '' 141 : ' 9^72b 204 157 J7* :U10,400 December ______. __ ...... 168 111 6,820 January ____ ... __ ,.... t ______... 118 . 7,260 i : ' 138 'v,m . 263 142 203 12,500 April ...... _. 201 132 163 9,700 13fr 88 108 6,640 157 91 119 7,080 ':170, 112 146 /:8^980 August ___ I ______'. ______.: 185 150 166 10,200 193 177 183 10,900 The,year ...1 , _., n...... 263 88 ,149 108, OPQ NOTE. Flow in by-pass around'gage as follows: Aucasi, 14 aor6-feet; September, 276"acre-feetj rbased on fnforma,tipn furaished-by the wftter master for Big Wood and' IkttJe- Wood rivfers. Theretoay have been some iQow in-by-pass at other seasons of wnJch no record is'ivailable, : ! , ' ;-q/. SURFACE WATE|l SUPPLYj ;1821, PART XII B SUCKER CHEEK NEAR HOMED ALE, IDAHO LOCATION. In NW. ^ sec. 22, T. 23 S., R. 46 E., Malheur County, Oreg., 100 yards below house on Isaac ranch and 12 miles southwest of Homedale, Owyhee County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 13, 1919, to September 30,1921. GAGE. Friez water-stage recorder on left bank, installed August 1, 1919, to replace a vertical staff at same site and datum; inspected by Bernice Vassar and Ruth Rankin. Gage was raised 6.00 feet November 23, 1919; and all gage heights were changed to conform to new datumJ" DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. Bed composed of sand and gravel. Control of same material; shifting. Channel very winding. Right bank is overflowed at medium stages; left bank high, seldom overflowed except at extremely high EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage recorder, about 5.69 feet at 8 p. m. February 10 (discharge, about 950 sec ond-feet); stream reported dry October, November, and early December. Channel may also have been dry at times during; July, August, and September. 1919-1921: Maximum stage recorded, 6.23 feet at 8.15 p. m. January 16, 1920 (estimated discharge, 1,080 second-feet); stream reported dry during various months of each year. ; r. ICE. Stage-discharge relation not seriously affected by ice. DIVERSIONS. Practically entire flow diverted above station during late irriga tion season. Gem Irrigation District diversion heads about 10 miles below REGULATION. None. ACCURACY, Stage<-diseharge relation not permanent. Rating curve used Decem ber 16 to February 9 is well defined to 70 second-feet. Standard rating curve which is well defined between 6 and 250 second-feet, and several curves parallel thereto, used after that date. Operation of water-stage recorder not satisfactory because of faulty operation of inlet pipe. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph or by shifting-control method as noted in footnote to daily discharge table. Records fair prior to March 15; thereafter good. COOPERATION. Services of observer furnished by Succor Creek Irrigation District. Discharge measurements of Sucker Greek near Homeetale' Idaho, during the'year end ing Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Mar. 2 A. Q. Fiedler...... ' 2.69 169 May 6 Berkeley Johnson 1.68 40.0 3 .....do...... 3.22 283 « . .do i... . 1.68 40.3 16 2.27 ' 138 22 .....do...... 2.87 222 ... 16 Johnson and Fiedler _ 2.27 142 29 .... .do...... 2.02 89.9 Apr. 1 1.99 85.2 1.22 10.4 1 1.98 81.7 305 Daily discharge, in & Ort»fe *m& , Idaho, for the year ending Sept. 30,1921 .' r, . / ; .. O"'. Day Dec. Jan. Feb. Mar. Apr. May June July Aug, jSept. ..''« '" 79 i...... : .. 104 31 146 54 '7265 0.8 1 2... ______. 107 29 183 81 51 .8 ., 3.. ______. __ . ,- 225 42 ;,- 278 90 48 50 .6 4... ______. 132 38s 37ff 88 44 & .5 5 - .-. ., 127 35 , ; 6JO 85 42 41 ,.4; 6..... ___ . ___ . 0.3 82 26 402 82 42 36 .3 7.... ______55 20 ,.., 298 82^ 56 29 .4, 8.. ______, _ . 53 31 218 75 64 31 .5 9.... __ ...... 67 77 , 175 72 58 23 .6 10 93 517 155 65 60 18 .5 U. a 11...... i .... 1.0 68 740 "" 12197 68 48 16 .5 19 67 599 75 46 12 .5 13 __ ...... 83 6171 138 ;, 84 44 10 .5 ' i ' U...... 85 537 161 82 44 7.9 .4 15 3.6 86 308 129 75 46 5.7 .4 0.1 16 3.4 82 153 138 72 59 5.9 .3 17...... T. 3.8 76 ,,, 103. 168 73 192 10 18 . 4.5 236 77 202 66 105 12 19 4.5 219 73 195 64 308 11 20 4.0 98 77 148 62 375 10 .2 21..' __ 8.0 113 90 140 66 375 6.9 22 ...... 5.1 76 60 127 75 235 4.8 23 ..... 6.4 92 58 148 75 215 3.4 24 6.4 100 64 164 73 159 2.0 25 4.5 86 84 144 66 146 1.8 26 3.6 62 111 121 62 123 1.7 27 4.8 60 94 Vf 46 105 1.3 .1 28 4.8 52 99 90 53 94 1.2 29 .. 13 35 90 70 90 1.2 30 223 . 41 82 58 88 1.0 31. 195 30 81 84 J NOTE. Braced figures show estimated mean discharge for periods indicated. Shifting-cpntrol methods used Feb. 10-15, Mar. 7-16, May 17-21, 23, 24. Discharge interpolated or estimated Jan, 3, Apr. 5, July 3-5, 14, and 15. Stream reported dry Oct. 1 to DecV 3. . ' Monthly discharge of Sucker Creek near Homedale, Idaho, for the year ending jSept. 30,1921 Discharge in second-feet Run-off in Month acre-feet :. ,.h.:, ' '.' -':. ; /:. Maximum Minimum Mean 223 0 16.3 1,000 236 30 93.3 5,740 740 20 171 >, 9,600 510 81 178 10,900 April ...... i...... :..:....^....., 90 53 72.1 4,290 May...... __ ...... 375 42 113 6,'950 June ______. ___ .... 72 1.0 17,8 , 1,060 July ...... 8 .32 19.7 .10 ' ' «. 1 September ______...... 37 22. 0 The year ______...... 740 0 54. 6 39,500 ^ NOTE. Stream reported dry Oct. 1 to pec. 3. 206 SURFACE SUKPtY, 1021, PART XII B OWYHEE RIVB» HEAR CREBK, NEV, LOCATION. In W. ^,sec. 24, T. 44 N., R. 54 E., an eighth of a mile below Wild 'ofHorse Elko. dam site, 9 miles west' of '"Gold{ ; Creek, Elko" . -County", ' and' 65 miles'""": nortk DRAINAGE AREA. 209 square miles (measured on map compiled by Irrigation. Service of United Stafe Indian Ofwoe). £' ' ,'/""""' . RECORDS AVAiLABLE.-^-M^rch 26, 1916rto Seiitembe,r 30, 1921. - GAGE.^ Stevens continuous water-stage recorder on left bank; inspected by Emery- Johnson. . : ' DISCHARGE MEASUREMENTS. M&de from cable at gage or by wading. CHANNEL AND CONTROL. Bed composed of roteks a»d loose sand. Control is- gravel riffle in,each of two channels; where stream is divided by'small island^ 500 feet below g&ige; pubjedt to change by work of beavers. -Left bank, high and rocky; right bank is overflowed at extreme high stages. One channel at all stages. Dense growth, of willows along banks. , EXTREMES OF DISCHARGE. Maximum stage recorded during the year front water-stage recorder, 6.86 feet at 11. p. m. April 22 (discharge, 828 second- feet); minimum discharge 2 second-feet August 14-23 (stage affected by; beaver dams). ' ' '- 1916-1921: Maximum, stage recorded from water-stage recorder, 8.5 feet at 3 a. m. May 14, 1917 (discharge, by extending rating curve, 1^380 second- feet). Minimum discharge probably less than 1 second-foot in August, 1918.- ICE. River freezes over during winter. DIVERSIONS. Wild-hay meadow.s above station irrigated during--flood season;. ACCURACY. Stage-discharge relation changed as a result of work of beavers from. October 1 to April 3 and from August 11 to September 30. Relation is per*; manent from the time dams wash out until they^are rebuilt in the late sum mer. Rating curve for .unobstructed flow well defined between 5,and 400* ." ' ':'_'!'j|'*';^etJ f_:L and_' .« fairlyf- l ' we^ L_'* Refined! ' i'l^^i'i -Tr''i'r_'' iabove. '_'_ .' liViBffeist'"'*i^1 :©fc)aeaVer dams' varies from year to year, but seems to remain fairly constant eacn season'^ Operatibn of , .water-stage recorder satisfactory- , Iie Oage Dis- ' GagR. "l>jst, Date (,: Made by height _ charge .Date . ','.. Made by heigtit eh^rgdv Sec*-ft. SSec -ft Dec. 5 2.74 "10.6 3.44 179 . Feb.'2S .-...-jdo-. -;...... '2?. 6 July "25" T5TR. Rbwe ..: . 1.55 5 4 W ; >- <. 0) : ..! }* i - :b > ' >' ' ' : ' .-.' roJr* a Stage-discharge relation affected by ice. 6 Gage not read on account of ice and snow. Daily discharge, in second*fee§ ctf Owyhee Ri$@t .near OoM 'Creek, Nev., for the year ._ , f ending, Sept. .SO, v:: ' ; <;«-4: Day Oct. Nov. Dec. Ifeb,, Mar... Apr, . ,May , June July, Ajlg. . Sept. " ' "' ' -: !, 1 ...... __ ...... 15 12 16 274 430 208 29 7 4 12 ___ ...... _ 16 12 16 i 485 430 197 26 10 " .--} 3 ___ .... ,_...;. 16 - < 14 ' .-, H: ( 400 -.-379 180. as 10; 4 __ . ______. _ . « 17 .. 12 ' 14. 377 373 . 194 28-'25 '">!*, ^ 78 6 ^. _ .. ___ ..... _ . ' ''21 ! -m 11 ':'})jrtJ8r-. 324 366 < : &40-' 6 :- ; Y'-.'l ..- ''' 283 3*53 ' 22- ^ -ig ' ' M<5 23 10 ' 176 6...:.::...... 1...; .. -. ...! -i, . ; . 5 ;. -ff 7"l '''i* J ' ' 4 ! 25 10 j .290 ; : 520 . 155 .18: 8 ,-. 25 ]fi ' '46'47 288 368 145, < -. ; 15M' ,5 6 9..:-.::.vx..a-r.k - 25 ': W ' > ' ! ' - 406 308 131 - -1.4 6 !&...... -»,.,.. *>K .12 "" 8' ... 45 d74 9fifi 117 ;14 ..- .4 6 11 i.U-. ^^-.(...... 2ti ; 18: ' 4* 590. ii 276" 105- 12 31 .]. 6 12 26 14 ,44 "' 491'590 269 96 , 11 >< ( ^gt ,. 6 13...... _ ...... 26 !..& .. 40, '- I** '262! 36 ' 11 > & 14, ______. 26 15! , ,»".«* 260 82, 1& , §? .,-. 0 15 ...... T _ . ____ . 25 16 42 ' 35& 262 77 9 7 ' '<* , ,v'.. : ;..-. r-: r^v.; Mv" 16...... __ ..... 25 , 16 ' ' ', ',' .' '» .') ' 4568'-' 340 :' 92 n ''8ft ->:*2 7 17...... ___ ..... 24 '-is 1 340^ i <£jft 86 7 18..^ r ..»-:.,...,...^.. 22 ;, 20, "m"j 74- ,M377 331 77 . a. r-o;-;» ^22 7 19...... __ . 22 20 396 5?0 74 9 '66 20. _ ...... __ .. 22 19 136 444 520 69 ; . 8 !. 2 1 15 -. -' : -2 ' -' ,f si...... :...... i..... 22 131 ' '472 434 60 ' 7 22..... _ ...... 22 15 j 135. 620 358 52. 8 2 7 23...... 22 14 123 600 308 51 7 2 7 24..... _ ...... _ .... 17 11 5 123 377 434 48 7 ..-.;.; 3: '25...... ,_.... 13 14 25 117 r 377 .336 . .-41 6 3 26...... L....L...JJ 14 15. , 82 . 353 290 , 38 5 ; 3 7 27... __ ...... __ . ... 14 18 ^ 40At) 73 322 36 5 3 28. ..-...... ; 15 15 77 :392 299' 34 5 3 29...... i f . 14 14 107 - -42* 335 33, 5- . 3 30. __ ... . ___ .... 12 ' ; 'IS * 123 472 252 32 - 5' 3 31 . _ . __ ..... iit _ . .12 i70.< 224 5 4 NOTE. Stage-discharge relation affected by beaver damS Oct. 1 to Apr. 3 and Aug. 11 to Sept. 30; dis charge determined from gaga b,eigh)6s corrected tfar backwater effect by means of discharge measurements made Sept. 10,1920, and Nov. il, 1921. Mean discharges estimated Dee. 6-15, 16-31, Feb. 1-24, 26-28, Mar. 1-7, and Sept. 24-30, from study of discharge measurements and weather records. No record for January; estimated mean discharge, 5 second-feet. Monthly discharge of Owyhee River near Gold Creek, Nev., for the year ending Sept. SO, 1921 Discharge in second-feet Run-on* in Month acre-feet M»3iipiujfQ 'rMinijtoum Mean October ______.^______. 2« 12 20.3 1-,250 November..- _____ ^ ______+ ____ a . 20 10 14.2 .: 845 December __ _ __ 1 ______. _____ 16 7.5 461 "5 307 February. ______. ______^ __ J 13.8 766 March... ____ . __ * ..* ______.. _ .. 171 42 79.0 4,860 April ______... .. ______.. ... 620 260 413 24,600 570 224 344 21,200 249 32 101 6,010 July ______... ______29 5 12.0 738 10 2 3.8 234 September... _ ! . __ .. ___ ,__ ^ ___ ... _ i. _ ;. . 7 4 6.3 , 375 620 2 85.0 61,600 o Estimated. See footnote to table of daily discharge. SUE-FACE WATEft 8tFPiPl>¥y MKf PART XIF B OWYHEE RIVER NEAR OWYHEE, HEV. LOCATION. In sec. 21, T. 46 N.JR. 53 E., 40 feet above mouth of Jones Brook; half a mile above J. P. Jones's ranch, 4 miles .below Mountain City, and 8 miles southeast of Owyhee, Elko County. DRAINAGE AREA. 380 square miles (measured on United States Forest Service map). RECORDS AVAILABLE. November 29, 1913, to September 30, 1921. GAGE. Stevens continuous water-stage recorder on right bank. DISCHARGE MEASUREMENTS. Made from cable 125 feet above gage or by wading. CHANNEL AND CONTROL. Bed composed of ledge rock and boulders .filled in with sand and gravel. Permanent except for slight changes at very low stages. One channel at all stages. Banks covered with willows and brush; subject to overflow, At low stages a riffle just below gage forms- control. At high stages a secondary control becomes effective. EXTREMES OF DISCHARGE. Not determined for 1921. 1914-1920: Maximum discharge, 1,750 second-feet on May 15,1917; min imum discharge less than 2 second-feet on September 7, 1918. ICE. Stage-discharge ^relation affected by ice and recorder usually not operated during winter. DIVERSIONS. A number of ranches above the station divert water from the main stream and tributaries for irrigation. REGULATION. None. ACCURACY. Stage-discharge relation permanent except for possible slight changes at extremely low stages. Rating curve is well defined. Failure to inspect recorder and isolated location resulted in obtaining no daily record except from July 24 to August 29. Daily discharge for this period ascer tained by applying to rating table mean daily gage height determined from recorder graph. Discharge measurements of Owyhee River near Owyhee, Nev., during the year ending Sept. SO, 1921 Dis Date Gage Dis Gage Made by height charge Date Made by height charge Feet Sec.-ft Feet Sec.-ft. Dec. 9 »2.14 99 7 June 22 E.C.Howard . 3.29 168 Feb. 19 do...... o2 97 OR July 24 1.92 21.8 "Stage-discharge relation slightly affected by ice. Daily discharge, in second-feet, of Owyhee River near Owyhee, Nev., for the year ending Sept. SO, 1921 Day Dec. Feb. Apr.;) June Jrtly Aog. Day Dec. Feb. Apr. June July Aug. 1 29 16 . ,,_,_.... 29 2 _ ...... 31 17 . 29 3...... 31 18 ...... 29 4...... 31 19 ...... 96 712 29 5...... 31 20 ...... 75 30 6...... 31 21...... 31 7...... 28 22...... 168 31 8...... 26 23 ...... 32 9...... 23 25 24...... 22 32 10...... 24 25 ...... 22 34 11...... 24 26 ...... , 24 34 12...... 884 26 27 ...... 24 34 13 ...... 26 28 24 33 14...... 28 29 24 34 15...... 29 30 25 31 __ 28 NOTE. See "Accuracy" paragraph. TRIBUTARY BASINS OWYHEE RIVER HEAR QWTHEE, OREfi. , v - -._ .-. n,'. LOCATION. In sec. 2, T. 21 S., R. 46 E., at county bridge 1J^ miles southwest of Owyhee; Malheur County, ~3 miles above mouth of riverland 10miles southwest of Nyssa. DRAINAGE AREA. About 'ill,100 square miles. Watershed not well defined OB available maps. > ,. " " " ^ RECORDS AVAILABLE. Match 26, 18§0, to December 31, 1893; January 1,189$;, to October 3, 1896; August 28, 1903, to September 30, 1916; May 17 to October 9, 1920, and March 8 to September 30, 1921. GAGE. Chain gage on upstreafli side of -Irighway bridge; read by Alvo$ McGinnis. DISCHARGE MEASUREMENTS. Made from bridge "or by wading. CHANNEL AND CONTROL, Bed composed of gravel; may shift during high; EXTREMES OF DISCHARGE. Maximum stage recorded during period ending Sep tember 30, 1921, 9.5 feet at 2,30 p. m. March 8 (discharge, 13,700 second- feet); minimum stage, 1.3 feet July 30 and 31 (discharge, 1,0 .second foot). 1890-1893; 18^5-96; 1903-1916; 1920-21: Maximum stage recorded, 12.9 feet March 2, 1910 (discharge/23,200 second-feet); minimum stage, 1.3 feet July 29, August 24, 27, 28, 1920,. and July 30 and 31, 1921 (dis charge, 1.0 second-foot). ICE. Stage-discharge relation not affected by ice during the period of record: DIVERSIONS. The Owyhee canal, the principal diversion immediately above station, heads about 6 miles above gage. This canal diverts practicsllyen-v tire'natural low-water flow of riVen , . REGULATION. Variation in the flow may be caused by manipulation of gates a^ the head Of Owyhee canal. ACCURACY. Stage-discharge relation permanent. Rating curve welT'defirieci; Gage read to half-tenths once a day. Daily discharge ascertained by apply ing daily gage height to rating table. Records good. Discharge measurements of Owyhee River near Owyhee, Oreg., during the year ending Sept. SO, 1921 [Made by H. Q. Kennard"] : Gage Dis Gage Dis Date height charge Date height charge Feet Sec.-ft. Feet Sec.-/*. , Mar. 8___..__.___...... __.___. a 40 13,400 July 18."...... 1.70' & a Apr. 13 ____ ...... __ ...... 6.65 2*1)20 Sept. 24.__r ...... 2.10 50 Water master. Malheur County. ^Estimated. PART XII B Daily discharge, in se<®nd*feetrof Vwykee' nvat-*Gwyhee, Or eg., for the year ending Sept. SO, 1921 . - " ,. -' r . - < bay Oct. Mar. Apr. May June /Jf y Aug, ; Sept. '»' r . flu ; -,; ' : ,.i ' ' -. ' ': . .- > ' : '. 72" or.j .- '!*<:><<; '!-" ' 2 2,"l30 2,780 3,600 327 22 2_. _ ..... ______.. .. 186 2,130 2,780 3,420 300 !*, 14 .£tJ. i. __ 'i.j4,^»i,.i.i..i ""r*-T»rrr-i --*rrr___ > . -' __ H*;160 ,<3,f2fli'3,600' , ; 2, 930 " ' ' 224 ., . 4 -... 1* f 224 2, 510 '2,930 6 g 0r "UJ -^ ' ' , . ° - ' 004 2,780 -3,i4aO> 1 OSfl 186 . 6 9 ' ' : '"I ' *'" 151' : ^'-» 6..... __ . _ ...... _ i_.~J j_ ' :;: 224-' 3,600 2;f80' 2,260 9 Z ...... ,.. iV_._ ,. _..w " "272 ! "3,600'3,660 2,780 2,130 121 .- ; -;'J4 , , M. 8...... _ ...... i3?666 2,780 2,130 95 ' 12 i,^-.g 9... _ ...... _ ...... 327 10,300 3,600 3,600 2,020 72 1 " » ft ' 14 10. ... ._ ; - ' : : *! , 8,,07| 3, 250 ,3,600 2,020 . 72 6 _,.,# 7,3t»s '%,,3,420 }&) 3j600 fri &* 9 ,- ,,!« i*;--..-..^.,!.w.-'; v . - ' 6,920 3,250 1 520 ^ 5tf 14 ' '18 13. _ . __ .. ___ ...... 6,920 2,130 3,250 1,340 34 14 ; - 22 14 .....f .,_.._. ...._,. ._. 6,920 a, i3o 2.780 1,160 34 14;9'" 1S.C- u-;-:J______._.__!.,_:I___. ... 6,920 2/780 1 8J650 l',08d 1 ^22 - ' ' '22f .,ii>'; : 'i,:ood ; |1:,- .-.. 6' let.:....--...: ";vr: "v : <" 5,820' 3. BOO' 3; 250 ' ' 22 28 17. __ i-u^i-ix.. .i '.iu-i* j-'-'.j 7,200 (i8»600' n3f 2«0 >lid60 = .' ;£*' -U . ft: ; 22 IX IS __ .. ______.. __ . __ j_«. &38P , 3,600 ,3,600 6 22 I«::L.,:.::I... ?' :2 !'T-v---"< -- fO,3Qfr 3,600 !i 4,390 i Sro ! :K^ "f.rgi. 22 M-.^J.-.w^^^v^ii-^-i.^ ______- W.300 a,«oo 4,840:^ ; 1/,«8Q; -Hi 14 f , ,. 1* > 18 21v:~L . __ .u-lj . .;: ... 7,770' . $6DO 5,310 %160 ; U4 ' 14. ; 18 22... ______._ . 7,770 2,780 5,820 1,000 .- : H'14 14 22 23...... 8,070 2,780 6,920 840 1 ' :'' !*' 28 241-. ..,:...... ,.,...... - 8,07ft - 2s 780 6, MO ,,760,606' ,,W , 14 25 .,.. .' . 5,310 2,51Q 7,480 9 14 34 '22 26.,....^ -,-- -,, -- --, 4,610 3,600 7,480 462 9 34 27. _ j.l}i--.J.Ji ; ' ' ' 4,810 3,«» 8,920 394 : & : , 14jl '-- 34 28 --...... I...... 4,6ig., 4,. 840 360,. ,-.- 1*1 -'14 34 29 ...... i, 780 4,390 360 2 14 30...-. . .v .^ .;j*i:-.;:: : -.J y 2 .7SJA 2.-T80 4,390 ; 827", -'.,-, v 1 6 31.. _____ ...... 2,780 3»600 1 22 N.OTE. No record Oct. 10 to Mar. 7. Monthly discharge of Owyh^ River near Owyhee; Oreg., for' the p&tiod Mar. 8 to Sept. 30, 1921 Discharge in second-feet Run-off Month in acre-feet Maximum M m Mean March1 8-31 '':[...... ___ ..... _____ . ___ ".': ' -' i3;l»-: 2,780 7, 020 ' 334^000 April ______,-...... 3.BOO 2,130 3,020 180,. 000 ?;480 2,780 4,220 260,000 tooft-^ .. l-i...... -,...... , 3, 60S 327 1,490 88,700 Jqly i - ' !327 1 71.4 4,390 ' 22 2 10.8 664 43 I- 9 22.3 1, 330 ;:sr;.» ," ' 8 S-('0#> tFQBK OF .OWYHEE RIVER NEAR DEEP CREEK, WfcV.ii ^ V: LOCATION. In SW. M sec. 20, T. 42 N., R. 50 E.r at lower end of canyon con- ,.!-,, .nesting SpaMsh Valley 'And I. L. Valley, 3 miles upstream from I. L. ranch buildings and -15 miles southwest of Deep Creek1, Elko County. DRAINAGE AREA. Not measured. 'RECORDS AVAILABLE. May 10 to September 30, 1921. . . i-i'V GAGE. Stevens continuous water-stage recorder on right bank; -installed Ju'Ji® 20 at site of a temporary staff gage used since May 10. inspected by , J.C.Wilson. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROK,- Bed>composed of grav.eland saod; shifting. Channel crooked. Right bank,high and clean at gage; both banks, covered with willows % short distance1 below. EXTREMES OF DISCHARGE. -Maximum stage1 durihg period May 10 to Septem ber 30, determined from1 high-water marks with si, level 10.8 feet on May 1$, date determined fVom comparison with jack Creek record (discharge, 1,150 second-feet). Minimum discharge 23 second-feet ppn September 21. ICE. River freezes* duritig winter. , ' . DIVERSIONS. A cori'sider&ble area of wild-hay meadows is'frrig'at^d in Spanish Valley about 20 miles upstream. , , , .« .,» REGULATION. None. . ; " ; ' *. ' ' ' '" " "'" ' Li '-- -'--' " -^ AcbtrRAcf: ^Stage-discharge'reiatiQii shbwed a slight shift. Rating cufve wefl defined between 15 'and 500' ! second-feet. Staff'gage \ised Maj^ 10 to June 18; Stevens continuous recorder June 20 to September $OV Daily dis- ' ' charge 'ascertaiAed' b^'5 applying1 daily'"gagk height ^o rating fatte May lO-^lSi, June ''IS to July''T, and July 28 to September^. Iftdirect iaiethod for shifting control used September 6-30. Records'good. ^; ' '' " measurements,.of. South -Fionh of. Owyhee River near -Deep*Creek, Nev., during the period May 10 to Sept. SO, 1921 ,.,, , ; Data . ; .;, .- - . , ?! iMade :by ' -: '' - . he^ht' ; DischaJr|e Feet .,. Sec.-ft. June 10 5.08 213 20 .....do. .-..-...... -* -..-.. ,4.8«. a '.2071 July 23 3.14, 42.0 Daily discharge; in second-feet, of South Fork of Owyhee River near Deep Creek, Nev. ~ ' for the period May 10 io Sept. 80, 1981 ! Day May June July ' Ang. Sept. Day May Jufle July Aug., Sept. 1 ___ ...... 101 43 26 16...V., ,.. 598 31 24 2...... 100 43 26 17...... _ . i^gg } 460 f ' ' ""' "" SO 24 3...... 94 42 "2424 18, __ -.. ruu\ 266 i 30 24 4 ______.. 93 40 19...... 1,150 227 , 45 , 30 24 5...... 1 -,. -, < Oft 37 24 :20 __ . _ .... 188 -' 80' 24 6...... 86 36 24 21. ___ ...... i 152 ^ 24 7...... \ 700 P2O*> :) 35 24 22. _ ...... 135 28 34 8 ...... r 34 24 23. ____ .... 126 42 28 24 9...... \ 70 34 24 24 __ ... __ .. 120 43 28 & 10...... &1& 1 33 24 25... ___ .... 900 115 42 28 ^i4 11...... 486 33 24 26 _____ .... 113 39 28 24 12...... 465 . 33 24 27 __ ... __ . 111 43 28 26 13.. . .-. 512 45 34 24 28,. __ ... 113 43 28 24 14...... 515 32 '24 29..;...... ^.. 107 -: 42 26 24 15.. . . 499 j- 450 31 24 30...... 104 43 26 25 31...... ___ . 43 26 , NOTE. Mean discharge;May 20-31, jPnne 1-17, July 8-10, and 11-22, estimated from comparison with "record of flow of Jack Creek. " '"..'' , . 212 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of South Fork of Owyhee River near Deep Creek, Nev.,for the period May 10 to Sept. SO, 1921 Discharge in second-feet Mpntb Run-off in Maximum Minimum Mean acre-feet May 10-31...... _ ...... 1,150 465 783 June ______' __ _ _ 194 426 July.- - __ -..,..-...,- . .. - ...... ,.. 101 39 57.3 3-520 August ______. . 43 26 32.1 1,970 September ______., ___ .. 26 24 24.2 1,440 The period. ______. ______66,400 JACK CREEK NEAR TTJSCAHORA, NEV. LOCATION. In sec. 35, T. 42 N., R. 52 E., at R. M. Woodward ranch on Elko- Mountain City stage road, 8 miles above confluence with South Fork of Owyhee River and 12 miles northeast of Tusearora, Elko County. DRAINAGE AREA. 31 square miles (measured on United States Forest Service map). RECORDS AVAILABLE. May 15, 1913, to September 30, 1921, r GAGE. Vertical staff on right bank 500 feet below Woodward's house; read by R. M. Woodward. DISCHARGE MEASUREMENTS. Made by wading. CHANNEL AND CONTROL. -Bed composed of coarse gravel and small boulders; shifting. Banks low and lined with willows; subject to overflow at extreme high stages. EXTREMES OF DISCHARGE. Maximum stage recorded, 3.00 feet at 6 p. m. May 18 (discharge, 372 second-feet); minimum stage, 0.18 foot September 11-27 (discharge, 2 second-feet). , ,, , , 1913-1920: Maximum stage recorded, 3.6 feet at 6 p. m. May 14, 1917 (discharge, 465 second-feet); minimum discharge, 0.6 second-foot September 2 and 3, 1918. ICE. Stage-discharge relation usually affected by ice each winter. - DIVERSIONS. Small ditches on Woodward ranch practically only diversions above station. Have little effect on flow except during August and Sep tember. REGULATION. None. ACCURACY. Stage-discharge relation changed slightly during high water; affected , by ice December 7-27, January 12-18, and February 14-22. Two rating-curves used, each fairly well defined between 2 and 200 second-feet. Staff gage read about every other day October to February and August to September. Daily readings obtained during a considerable part of the other months. Daily discharge determined by applying to rating tables the staff gage i'.) readings except during ice-affected periods when mean discharge was esti- ! mated from current-meter measurements, observer's notes, and study of climatic records. Discharge for days when gage was not read ^obtained .by interpolation. Records fair. COOPERATION. Gage-height record furnished by R. M. Woodward. Discharge measurements of Jack Creek near Tusearora, Nev., during the year ending Sept. SO, 1291,, Gage Dis Gage Dis Bate Made by height charge Date Made by height charge Feet Sfc.-ft. Feet Sec,-fa Dec. 10 «0.53 7.1 . 0- Howar^--- 1.64 137 Feb. 22 ...... do ; ... ..!.. «1.30 28.5 July 22 t .61 16.4 « Stage-discharge relation affected by ice. BASINS 213 Daily discharge, in mc&ttd~feeti~<$i Day Oct. Nov. Dec. Jan. Feb. Mar.. Apr. May June July Aug. Sept. 1 _____ .. 3 7 18 8 30 90 162 229 85 11 ,8 2 . __ ...... 3 7 17 Mlll 9 S3 110 172 224 84 10 8 3 .^ a ,7 16 12 10 41 108 183 219 83 10 3 4.. _ . ____ ' 3 7 ID 12 10 5* 102. 185 220 78 10 3 5- _ ...... 7; io 12 10 80 98 1QQ 222 70 10 3 6...... 3 7 12 11 10 ftft 94 196 234 59 10 2 7 . 3 7 10 11 10 74 98 202 246 48 10 2 8 _ ... .. 3 7 11 11 67 102 204 282 44 10 2 9 ______. 3 7 7 10 12 50 > 108 205 293 30 9 2 10 4 7 7 10 12 iO 108 209 300 38 2 11...... 4 7 10 13 60. 130 220 300 36 9 2 12.. __ ...... 5 7 14 50 154 235 289 35 9 2 13.. __ ...... 5 7 50 160 250 264 34 9 2 14...... 6 , 50 138 260 229 34 7 2 15- . 6 50 123 265 162 31 7 2 7 16...... 6 50 122 270 136 29 6 2 17...... 7 40 49 121 323 115 28 6 2 18 .... 7 12 49 120 327 100 26 6 2 19...... _ . .... 7 49 122 336 100 24 6 2 20.. ... 7 7 8 49 123 327 99 22 5 2 21...... __ ... 7 50 124 318 OS 20 5 2 22 7 17 '8;8 52 126 318 96 17 4 . 2 23...... 7 17 52 129 315 94 17 4 2 24...... 7 10 26 53 130 313 QO 16 2 2fi __ - ...... 8 18 8 27 134 307 92 15 4 2 26..._» .... 8 18 8 28 138 305 91 14 4 2 27... _ ...... 8 18 8 28 150 300 90 13 4 2 28...... 8 18 11 8 29 60 162 289 89 13 3 2 29...... 7 18 12 8 202 282 88 12 3 2 30... . . 7 18 13 8 186 264 86 12 3 2 31...... 7 12 8 246 It, 3 NOTE. See "Accuracy " paragraph. Monthly discharge of Jack Creek near Tuscarora, Nev., for the year ending Sept. 30, 1981 Discharge in second-feet Bun-oil In Month acre-feet Maximum Minimum Mean 8 3 5.5 338 18 7 11.6 690 18 9.3 572 12 8.9 547 8 24.4 1,360 30 54.3 3,340 April...... __ _'______.. __ __ . ______.. 202 90 127 7,560 336 162 257 15,800 300 86 173 10,300 July.,...... :...... ^.. 85 11 35. 1 2,160 11 3 6.8 418 3 2 2.2 130 336 ,2 59.7 43,200 SURFACE WATfcfe PART XII B HEAB TWIW i IBAK0 - . . -;:- LOCATION. About sec. 23, T. 4 N., R. 6 E. (unsurveyed), a quarter of a mile above Birch Creek, I J^ miles "above flow line of Ai Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 26 2 en 6.47 6 400 Jan. 20 AG. Fiedler...... 2.55 650 2 6.44 6,530 Mar. 2 2.84 017 13 .....do...... 6.90 7,520 Apr. J9: B fcfrkeley Jolosani__ 4.04 2,370 14 7.08 7, 9SO 19 ..do...... 4.04 2,380 July 25 "A.'O, Ffwiievrmiiiiir _ 2.81 £01 19 .....do - . . 4.04 2,360 SepL 9 Tallmaii and. Steward6 2.19 421 a Water master for Boise River. & An employee of the United States Bureau of Reclamation. discharge, ,for the year ending Sept. 30, <*W.v . Day Oct. Nov. Dec. Jan. Feb. Mar. ,Ajpr.(p May June July Aug! Sept., ,597 755 1,710 2,690 6,800 46J 2,200 "6,800' 694 2,,ooo 694 417 4,440' #,200 ' 656 390 l,fiSS 2/520 5,090 l!840 ; -#!' i.isso '4,'ilO- 7,'790 597 ,423 i-i8* .1,480, 1,640: 5,650'6;C90, .7,980 1,940 397 1,310 1,580 1,910 471- ao4 1,220 1,660 16,030* 8,390 1,010 1.0. W 371 547 1,210 1,710 ,6t030 7,990. 1,770 11. 540 364 583 1,200 1,710 5,S4Qi 12- 540 384 575 1,190 2,130 6,03tf BOO 1*5SO 131 547 604 1,346 6,030 1,460 14. .P9, .450, ffi° g,940 6,410 ^7 370 is: 575 423 S'520 7,200' l'3lO 16. '519 457 444 843 1,130 2,200 8,5S90 5.270 1,250 17. 498 634 464 686 1,190 2,050 8,600 4/260^ 1,180 18- 512; 943 997 m 2,130 ?,m 3,810 19. 526 1,310 739 ' 732 2,360 6,800 3,640 ;498 j,'iao 678-1 783 a<520 2,1520. 498, 21. ' 875 894 1,410 6,09ft 22. 802, 401 626 2,^00 5,849 ,4,350 23. 491 (724 478 634 1,330 3,110 5,840 4,54(J 24j 478 648 634' 1,420 2,860 6,220- 4/810 25. 619 fil9f 694 ,1,42Q 2V520 4,630 671' 26. 491 m 778; 1,820 2,386 7,'|90 4*170 457 27. 491 755 547'568 ,786 1,250 2.050 ,7,790' 3,720 450 28. 484 612 2,200 t,m 3J 720 430 29. 4m 540 l',270 2,520 7,200 3,720 450 30. 4'64 583 505 1,360 2,600 6,800 3,460 430 31. 471 1,480 6,610 423 NOTE. Braced figures show estimated mean discharge for periods indicated. Monthly discharge of Boise River near fyein Spwngs, Jidahot for Sept. 50, 1921 [Drainage ares, 830 square miles] Discharge in second-feel; Run-oft Month Per square Maximum -Minimum Mean mile Inches - Acre-feet October _ ±. ______575 . 457 494 0.595 0.69 30,400 November ___ . __ ___ ..... 1, 310 351 583 .7*2 .78. 34,700 December ______.. 892 313 528 .036 .73 32,500 859 364 580 .699 . .81 35,700 February ... _ : ____ ...... ' «34 397 630 .759 .79 35/OW 1,770 892 1,320 1.59 1.83 81,200 April __ .^. __ ...... 3,280 1,560 2,350 2/83 3. 1« 140,000 May ______...... 8,600 2,690 6,130 7.39 8.52 377,080 June _____ ...... 8,600 3,460 5,880 7.08 7.90 350, 000 July ...... 3,020 686 1,400 ! 1.69 1.95 *6, JOO August ______...... 701- 428 533 .-642 , . 74 32,800 September _ . ______... 597 410 447 .539 .60 26,600 The year ______... 8,600 1 ' 313 1,740 2.10 28.50 1,260,000 216 SURFACE WATEB SUPPLY, 1&21, PABT XII B LOCATION. In E. J£ sec. 13, T. 3 N., R. 4 E., at Arrowrock, Boise County, 22 miles by road east from Boise. ; DRAINAGE AREA. Not measured. RECORDS AVAILABLE. October 1, 1917, to September 30, 1921. GAGE, Graduations painted on center of upsiream vertical face Of concrete-dam, in September, 1917; read by E.;B. Ballard, superintendent of Arrowrock dam. Vertical staff .in seven sections on south side of reservoir immediately above dam was used from February 24, 1915, to September, 1917, with the excep tion of a few months.in 1916 when chain gage on dam ;was used. Records prior to October 1,1917, not published owing to uncertainty as to when changes caused by action of frost and icq, occurred in position of staff gages. Gage is set to sea-level datum. EXTREMES OF CONTENTS- Maximum stage recorded during year, 3,213.15 feet May 18 and June 12 (contents, 283,000 acre^feet); minimum stage, reservoir drained October 1-10, with sluice gates wide open and natural flow of river, passing reservoir. , ,, 1918-1921: Maximum stage recorded, 3,214.1 feet June 14,1918 (contents, 285,800 acre-feet); minimum/reservoir drained September 13-17 and Sep tember 20 to October 1, 1919; September 13 to October 10, 1920. STORAGE. Capacity of reservoir about 280,000 acre-feet, as determined by latest capacity table; elevation of crest of spillway weir and top of movable crest 3,205 feet and 3,211 feet, respectively.' The lip spillway, at north end of dam is designed to carry 40,000 second-feet. Water is released during the irri gation season for irrigation of lands in Boise. Valley. COOPERATION. Gage-height record apd table of storage capacity furnished by United States Bureau of Reclamation. <* Daily contents, in acre-feel) of Arrowrock reservoir at Arrowrock, Idaho,rfor the year ' j ending Sept.'W, 1921 " ; Day Oct. Nov. Dec. Jan. 1 Feb. Ma>. Apr. May 'June July Aug.. Sept. 1 . 23,380 28,910 51,030 118, 800 136,600 219,000 249,200 280,200 278,300 204, 600 82,250 2 - 24,530 28, 770 52, 130 119,300 138,000 218..000 250,300 280,000 277,700 201,000 78,600 3- _ . 25,690 28,770 53, 230 119,900 140,800 219,000 252,800 280,000 277, 100 197,600 75,100 4...... 28,500 -5&;-800 119,900 144,800 222,900 266,600 280,100 277,400 184,000 71,310 5 i. 27^ 160 28,230 59,280 119, 900 ,150,200 222,900 261, 300 280,700 277, 100 190,800 67,80C 6_ _- 26,700 27,560 62,600 119,900 156,900 226,800 266,800 281, 200 276,800 187, 100 64,420 7...... 25,940 26,700 65,720 119,900 162, 100 226,800 271,800 281,900 276,800 183,700 60,780 8.. 25,320 25,500 87,800 119,900 166,300 225,500 276-, 500 282, 400 276,500 179, 300 57,600 9 24, 120 25, 130 69,880 119,900 171,400 223,400 '278,900 282,600 276,200 176, 600 54,360 10...... 22,990 25,130 71,700 119, 700 176,800 221,600 279, 800 282,600 275,600 173, 100 51, 250 11...... 1,445 21, 780 25, 130 73,420 119, 700 .181,700 222,900 2.78, 600 282, 300 274, 100 169, 100 48,500 12 3,585 20,680 24, 830 74,820 119,200 186, 900 221, 600 278, 30Q 283,000 272,900 "165, 100 46,300 13 5,400 20,070 24, 530 76, 080 119,500 192,200 222,900 278,000 282,400 270,600 160,400 44,200 14... i.. 7,080 19, 570 25,690 77.20C 120, 200 196,900 226,800 278,000 281,900 268, 300 155,800 42,060 15-. . 9,050 18,840 26,900 80,000 121,500 202,400 229,400 278,900 280,400 265,400 151,600 39,900 16... 10,940 18,140 27,490 83.00C 124,400 207,000 230,400 281,000 278,600 262, 800 147,000 37, 780 17 12,500 17,680 28, 640 85.55C 126,600 211, 500 230,400 282, 500 275,600 259,600 142, 800 36, 090 18 13,760 18,140 30, 030 87,500 126, 600 215,000 230,400 283,000 274, 100 256, 200 138,200 34,420 19 -f 15,220 19,820 31, 760 91,180 126, 200 220, 300 231,000 281,400 275,000 252, 800 133, 800 32, 730 20-. .11 16,450 22,990 33, 110 94,70C 126, 200 225,500 232,000 279,500 276, 200 249, 200 129, 300 31,910 21...... 17,320 25, 250 34, 340 97,88C 127, 600 229, 400 234, 100 278,600 276,800 245, 600 124,900 31, 180 22 18, 230 26,190 35,690 99,750 129, 100 -233,600 235,900 278,400 277,400 242, 100 120,- 600 30,320 23. 19,130 26,900 36, 570 102,000 130, 600 236,200 238, 500 278, 000 278, 000 238, 500 116,600 29, 190 24 19,920 27,360 37,540 104,000 132,600 237,200 242,400 278,000 278, 600 234, 600 112, 500 28,360 25- _ . 20, 630 27,560 38,680 106,600 133,400 237,500 244,700 278,800 278,800 231,000 10»; 880 27,490 26-.... 20,89C 27,620 39,900 109,400 133, 400 236,700 245,800 280,000 278, 300 227, 100 105,000 26,640 27-.... 20,99t 28,290 40,980 111,600 134,200 233,800 . 245, 800 281,300 277,400 223,200 101, 100 25,940 28...... 20,89C 29,190 42,060 113, 900 135,400 230,200 245,800 281,400 277, 700 219, 300 97,200 25, 320 29 20/53C 29, 19C 43,500 115,200 226,800 246,400 281, 200 278,900 215,500 93,100 24, 710 30 20,89C 29.05C 45,500 117,000 223, 700 248, 100 280, 700 278,900 212, OOC 89,580 23,950 31 22, 16C 49,050 117,900 221,100 280,100 208,200 86,000 NOTE. Reservoir drained and natural flow of river passed through reservoir Oct. 1-10. TRIBUTARY BASINS 217- BOISE RIVER AT BOWLING RANCH, KBA3 ARRQ WROCK, IDAHO :- LOCATION. In sec. 15, T. 3 N., R. 4 E., at Bowling ranch, Eimore County, three-fourths of a mite above Moore Creek, 2 miles below Highland power dam, and 4 miles below Arrowrock. , DRAINAGE AREA. 2,230 square miles (measured on topographic maps). RECOBDS AVAILABLE. March 12,1911, to September 30,1921. GAGE. Friez water-stage recorder on left bank; installed March 19, 1915, to replace an inclined staff set to same datum and at practically the same location; inspected by J. N. Davis. , DISCHARGE MEASUREMENTS. Made from a cable 50 feet below gage or by wading. CHANNEL AND CONTROL. -Red composed of gravel and boulders. One channel at all stages. Control subject to slight changes. EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage re corder, 9.27 feet noon to 4 p. m. June 12 (discharge, 16,500 second-feet); minimum stage, 1.39 feet 2 to 4 p. m. January 5 (discharge, 89 second-feet) * A lower discharge may have occurred during a period when stage-discharge relation was affected by ice. 1911-1921: Maximum stage recorded; that of June 12, 1921; minimum stage occurred December 15 and 28, 1917, when stage was below gage due- to closing of gates at Arrowrock dam (estimated discharge, 20 second-feet). ICE. Stage-discharge relation not seriously affected by ice. DIVERSIONS. No important diversions above station. New York canal of Boise project. United States Bureau of Reclamation, diverts 10 miles below and maximum capacity of about, 2,500 second-feet. A number of smaller canals, totalJcap^city of about 2,900 second-feet, divert below New York canal. . i , ' , REGULATION. Since February J21, 19l5, flow has been regulated at Arrowrock reservoir 4 miles up stream, which has storage capacity of 280,000 acre-feet; Water is stored during winter and spring and released during irrigation season. * '; , , . . ACCURACY. -Stage-discharge relation changed during high water of -May; affected by ice during part of January. Rating curves well defined above ' stages of 150 second-feet and fairly well defined for lower discharges; one rating curve applicable October 1 to May 16; the other curve May 17 to September 30. Daily discharge ascertained by applying to, rating tables mean daily gage height obtained by inspection of recorder graph, except as - ' noted in footnote to table of daily-discharge. Records good except during January, which are fair. ^ COOPERATION. Several discharge measurements furnished by 'United States Bureau of Reclamation and water master for Boise River. SURFACE WATER, SUPPLY, 1821,; PART XII B Discharge Idaho during the year ending $ppt. SO., 19.21 , Gage Dis . Made by Qage Dis Date Made by charge Date height charge 'Feet T 'Sec-jt. feet Sec.-ft. Oct. 6 Keener and TallmatJ". 2.76 661 June 15 Berkeley Johnson.. i.. 8.-B2 13,900 Nov. 29 L. L. .Bryan.. ___ ... 3.14 956 July 18"10 Talltnan and Grill __ 5.04 3,600 JS&', 1« A. a;;»fedletv . .... '1..58! 126 .:.. I 'So 2..1-...... 5.19 ' 3,970 Mar. 1 3.48 1,320 21 ....i do,-:--. K -- 5.10 3,640 12 Bryan and Johnson .... 2.23 335 25 Steward and Crill- __ 5.03 3,490 Apr. 22 5. '57 4,670 37; A. O., Fiedter _ . _ >,< 4.96 3,380 May 11 Coffin and Powers ..... 7.98 12,700 Aug. 8 Tallman and Crill __ 4.65 2,910 18 9.14 15,700 15 .....do .. ..,..... 4. '85 3,090 June 1 Berkeley Johnson., __ ... 8,' 45 13,100 ,, 30 A. JL Tallman . .. 4.44 2,530 4 . _ . do __ ... ___ ." ... 8.48 13,500 Sept.' 16 TWihan and Steward. 3.94 1,770 9 .do. . 9.24 16,700 Water master far Boise River. , NQ^E. Keener, Coffin, powers, Steward, and, Crill were employers of the ^nited States Bureau of Reclamation. ' ' . ..- -. . Daily discharge, in second-feet, of Boise River at Bowling ranch, near Arfowrock, Idaho, for the year ending Sept. SO, 1921 , Day Oct., Nov. Dec. Jan, Feb. Mar. - Apn. -May - June July, Aug. Sept. i:_ ____ 748 195 1,UO 1,030 727 1,300 4,760 5,770 13,300 6,060 3,120 2,.5» 2. ___ ...... 727 202 1,110 1,310 820 1,030 4,760 6,300 13,300 5,420 3,120 2,520 8.,., __ .... 720 205 1,110 «23 940 850 4,760 6,578; 18,300 4,460 3,120 : 2,520 713 415 1,110 145 993 874 4,760 6,840 13,300 4,020 3,030 2,520 :-:::::::: 693 828 1,120 101 993 907 4,760 7,120 14,000 3,800 2,940 2,600 6 __ . 693 993 1, 140 103 984 931 4,760 7,250 14,700 3,700 2^,940 2,600 7. .. __ . 813 1,050 1,160 198 1,010 957 4,760 7,530 15,400 3,700 3, $80 2,440 882 1,100 1,150 172 1,040 675 4,760 9,220 15,800, 3,700 2,860 2,360 I--::::::: 828 1,186 1, 140 108 1,090 56fl 4,760 11,400 16,200 '3,800 ^,940 2, -290 to-iw;...,.... 609 1,090 1,140 1,130 293 3,750 13,800 15,800 3,800 3,080 2,140 11. .- 309' 1,000 1,130 1,130 331 3,750 13,600 15/800 3,910 3,120 2,000 12 -..--.-.. 163 984 1,150 130 1,130 381 4,760 12,200 16,200 4,020 3,220 1,870 13 195 949 520 1,140 391 4,760 12,200 15, 800 4,020 3,220 1,870 Id > 216 966 154 1,080 381 4760 i^aoa 15,100 4,020 3,220 1,870 15, ,.. __ . 175 993 249 1,040 561 4,760 13,400 13,300 3,910 3,220 1,870 UU, -- _ 169 984 249 154 1,020 727- 4,880 15,400 11,600 3,910 3,220 1,740 17. ..; ..... 216 984 249 157 984 1,060 4,880 16,200 9,640 3, 910 3,320 1,680 ML-.:....-..... 198 031 257 154 1,060 1,320 4,880 15,«00 7,470 3,910 3,120 1,620 19.. 260 806 257 118 1,060 1,320 4,880 14,000 6,330 3,910 3,120 1,550 » .- _. 420 828 267 93 1,070 1,330 4,880 12,800 6,470 3,800 2,940 1,470 21 . 435 890 260 1,070 1,340 4,880 11,900 6,890 3,700 2,940 1,440 23.,.^:. ,. ... 451 984 264 1,070 1,550 f 4,180 Ml.floe 7,439 3,700 2,860 1,440 23 461 1,010 260 95 1,080 2,290 5,000 11,300 8,070 3,600 2,860 1,390 24 ______. 471 1,020 268 1,140 3,040 5,000 11,600 8,540 3,600 2,77* 1,320 25_...... 578 1,020 272 1,290 3,540 5,000 12,800; , «,540 3,600 2,680 1,310 26 ...... 783 1,030 276 96 1,329 4,420 5*000 13;, 300 8i«70 3,500 2,880 1,220 27 . 866 1,050 276 96 1,150 4, 760 5,000 14,700 6,890 3,500 2,680 1,180 28 _ ..... _ . 975 975 276 202 1,210 4,880 5,000 14,400 6,330 3,310 2,680 1,160 29. ____ . 899 975 234 435 4,760 5,130 14,400 6,610 3,220 2,600 1,150 30...... 241 1,080 195 > 537 4,760 5,510 13,700 6,610 3,220 2,520 1,130 31 _ ...... 192 435 - 621 ...... 4,760- 13,300 3,120 2,520 NOTE. Stage-discharge relation affected by ice Jan. 10-15, 21-25. Staff readings used Nov. 2 8-30, Dec. 9-10, 24-28, Jan. 17, and July 17. TRIBUTARY BASINS 219 Monthly discharge of Boise River at Dowling ranch, near Arrowrock, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Month Run-off in acre-feet Maximum Minimum Mean 975 163 519 31,900 1,130 185 889 52,900 1,160 154 606 37,300 1,310 258 15,90G 1,320 727 1,000 58,900 4,880 293 1,830 113,000 5,510 3,750 4,810 286,000 16,200 5,770 11,600 713,000 16,200 6,330 11,200 666, OCO July -...... - ...... 6,060 3,120 3,870 238, OtO 3,220 2,520 2,950 181,000 2,600 1,130 1,830 109,000 16,200 3,460 2,500,000 BOISE RIVER AT NOTUS, IDAHO LOCATION. In sec. 34, T. 5 N., R. 4 W., at steel highway bridge a quarter of a mile south of Notus, Canyon County, and 7 miles northwest of Caldwell. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. April 1, 1920, to September 30, 1921. GAGE. Vertical staff of Steward type bolted to upstream end of center tubular pier of steel highway bridge; read by Mrs. Ida B. Mansell. DISCHARGE MEASUREMENTS. Made from highway bridge at gage or by wading. CHANNEL AND CONTROL. Bed composed of clean gravel and cobbles. One chan nel at gage during all but extreme high stages. Control formed by well- defined gravel bar; practically peimanent. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 7.0 feet May 19 and 20 (discharge, 14,500 second-feet); minimum stage, 0.66 foot Sep tember 2 (discharge, 31 second-feet). 1920-1921: Maximum stage recorded, that of May 19 and 20, 1921; mini mum discharge, 10 second-feet August 18, 1920. ICE. Stage-discharge relation not seriously affected by ice. DIVERSiONS.J Below practically all diversions for irrigation in Boise Valley. Records during irrigation season show amount of water wasted into Snake River. REGULATION. Flow regulated by headgates at Arrowrock reservoir and by numerous diversions between station and reservoir. ACCURACY. Stage-discharge relation practically permanent. Two rating curves which are well defined between 30 and 1,400 second-feet, used during the year. Gage re^d to hundredths once daily. Daily discharge ascer tained by applying daily gage height to rating table. Records good. COOPERATION. Gage-height record from April to September furnished by water master for Boise River. 220 SURFACE WATER SUPPLY, 1921, PART XII B Discharge measurements of Boise River-at Notus, Idaho, during the year ending Sept. 80,1921 Gage Dis Gage Dis Date Made by height charge Date Made by- height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 17 2.34 512 Apr. 26 Berkeley Johnson.. __ 3.59 2,900 28 .....do ...... 2,52 698 May 20 Paulsen and Tollman" 6.97 14, 4CO Feb. 2 A rt WjorUor 2.68 991 29 Berkeley Johnson ...... 6.75 12,800 .....do. . 2.75 1,050 June 30 C. W.-Kief ...... 3.83 2, 870 17 3 17 .....do, ...... 78 : 37.4 31 4.65 5,310 Water master for Boise Kiver. Daily discharge, in second-feet, of Boise River at Notus, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 ______224 670 670 2,250 718 1,270 5,310 3,160 11, 400 2,860 49 32 2. ____ .... 232 579 670 2,250 970 1,270 5,310 3,650 11,400 2,230 43 31 3..... __ . 239 621 718 3,400 718 970 5,940 3,910 10,600 1,940 52 32 4 ___ ...... 305 670 718 2,700 718 1,120 6,270 3,910 10,600 1,490 48 34 5 _ 345 537 670 1,440 779 1,630 5,620 4,170 10, 600 1,160 42 36 6..... __ ... 372 579 621 1,040 718 1,730 5,310 4,720 11,000 670 36 46 7 400 537 670 970 621 1,630 5,310 5,010 11,800 365 32 81 8- _ .-.-. 500 670 970 621 1,440 5,010 5,940 12,200 205 52 78 9. __ . _ .. 621 670 970 840 1,270 5.310 8,830 13,000 92 42 75 10 ___ . __ . 840 779 905 840 840 5,310 9,610 12, 600 52 33 92 11. __ ...... 840 700 840 840 1,040 621 5.310 11,200 13,000 46 37 95 12...... 1,270 1 718 779 1,120 718 5,310 10,400 12,600 41 42 113 13. ______840 779 718 1,190 840 5,310 1Q,000 12,200 46 v59 . ,140 14...... «70 840 779 1,360 840 5,620 10,000 11,400 55 52 177 15 __ . ___ .. 621 1 840 779 840 1,820 840 5,310 10,400 11,400 50 50 205 16. __ ...... 840 840 718 840 1,440 1,120 5,310 12,000 10,600 46 46 233 17...... 905 779 779 970 1,040 1,930 5,310 13, 200 10,600 43 50 272 18...... 840 840 718 1,120 905 2,810 5,010 13,700 7.950 115 38 290 19. . .,, 1,270 840 718 1,120 840 2,580 4,720 14, 500 4,110 140 37 340 20... 840 718 840 1,120 970 2,250 4,720 14,100 3,840 107 49 478 21 ___ . _ .. 670 670 718 1,040 970 2,040 4,720 12,800 3,580 101 50 510 22...... 621 670 670 840 1,040 2,250 3, 650 11,900 3,580 83 44 445 23. ___ . _ t 840 621 621 905 1,040 2,700 3,400 11, 600 4,680 76 36 445 24...... 905 621 718 970 970 3,650 3,160 11,000 4,980 103 37 445 25. __ ...... 1,040 670 840 840 1,120 4,720 2,920 11,100 5,600 115 34 340 26. ____ .... 840 670 840 840 1,120 5,310 2,700 11, 600 4,980 140 33 330 27 ___ ...... 670 840 840 905 1,120 6,270 2,810 12.360 4,390 120 32 ,365 28 _ . __ . _ 621 718 970 905 970 5,620 2,810 12.600 3,330 81 32 330 29. __ ...;. 679 718' 1,120 840 5,620 2,700 13,000 3.090 70 34 237 30 __ ...... ! 718 670 1,440 779 5,310 2,920 11,800 2,980 63 33 O1Q 31 ___ ...... I 579 1,630 718 5,310 11,400 52 32 NOTE. Braced figures show estimated mean discharge for period indicated. Shifting-control method used May 22-27. ..-,. Monthly.discharge of Boise River at Notus, Idaho, -for the year ending Sept. 80, 1921 ' ', . ..' , 1 Discharge in second-feet Month Rnn-ofl In Maximum Minimum Mean acre-feet f '681 '' 1,270 224 41,900 November ______. ______. .... 694, . . 41,300 1,630 621 - '806 49, 600 3,400 Tis 1, 150 70, 700 1,820 621 986 54,800 6,270 621 2,470 152,000 April...... 6,270 2,700 4,610 274, 000 May 14, 500 3,160 9,790 602,000 13,000 2, 980 8,470 . 504,000 July...... -...... - ...... -. . 2,860 41 412 25,300 59 32 41.5 2,550 September. __ .. ______v _ __ __ ... 510 31 216 12,900 14,500 31 2,530 1,830,000 TRIBUTARY BASINS 221 SOUTH FORE OF BOISE RIVER NEAR LENOX, IDAHO3 LOCATION. In sec. 24, T. 2 N., R. 6 E., in canyon at R. S. Sandlin's ranch 1 mile above mouth of Smith Creek, 4 miles above flow line of Arrowrock reservoir, and 4 miles southwest of Lenox post office, Elm ore County. DRAINAGE AREA. 1,090 square miles (measured on topographic maps). RECORDS AVAILABLE. March 24, 1911, to September 30, 1921. GAGE. Friez water-stage recorder, on right bank, referred to inside and outside vertical staff gages; installed, April 11, 1915, at same datum but about 25 feet below original inclined gage; inspected by R. S. Sandlin. Records from March 24, 1911, to April 10, 1915, refer to inclined gage. DISCHARGE MEASUREMENTS. Made from cable 100 feet above gage, or by wading 150 feet below gage. CHANNEL AND CONTROL. Bed composed of mud and gravel. Control of coarse gravel and rock; practically permanent. One channel at all stages. Stage- discharge relation at times affected by debris upon control. EXTREMES OF DISCHARGE. Maximum stage during year from water-stage re corder, 9.44 feet at 2 p. m. May 17 (discharge, 9,020 second-feet); minimum stage, 2.18 feet at 6 a. m. October 6 (discharge, 250 second-feet). 1911-1921: Maximum stage recorded, 9.53 feet at 11 a. m. May 15, 1917 (discharge, 9,200 second-feet); minimum stage, 1.94 feet at 1 p. m. December 16, 1915 (discharge, 197 second-feet). ICE. Stage-discharge relation seriously affected by ice. DIVERSIONS. No important diversions above gage and none below. REGULATION. No artificial regulation. ACCURACY. -Stagerdiseharge relation not permanent. Well defined standard rating curve and curves parallel thereto used during the year. Daily dis charge ascertained by applying to rating table mean daily gage height ob tained by inspection of recorder graph, except for periods of shifting control as noted in footnote to daily discharge table. Records good except for discharge above 5,000 second-feet which are fair. Discharge measurements of South Fork of Boise River near Lenox, Idaho, during the year ending Sept. 80, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feel Sec.-ft. Feet See.-ft. 2.82 488 8.09 4,150 A. G. Fiedler ...... -2.64 291 12 .....do. . _ .... . _ . 9.23 7,200 Mar. 4 3.61 887 12 .....do...... 9.14 6,600 5.78 2,810 3.40 705 21 . -do...... 5.76 2,770 Sept. 7 2.62 361 ° Stage discharge relation affected by ice. & Water master for Boise River. c Employee of the United States Bureau of Reclamation. 'Fonnerly designated "South Pork of Boise Kiver near Prairie, Idaho.1' 222 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of South fork of Boise River near Lenox, Idaho^or the year ending Sept. 30, D-3.V Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1.. _ ...... 275 348 385 458 397 593 1,660 3,060 5,760 2,640 574 340 2...... 272 337 421 480 381 647 2,020 3,540 5,410 2,430 598 337 3...... 266 330 409 607 409 743. 2,590 3,920 5,240 2,220 607 334 261 348 378 584 413 913 2,820 4,230 5,410 1,980 617 337 255 334 366 524 421 1,080 .2,430 4,890 5,760 1,790 588 348 6_...... 255 306 355 493 381 1,100 2,070 4,720 6,120 1,750 542 351 7...... 284 310 344 351 1,110 1,840 4,560 6,500 1,700 515 351 8...... 316 313 421 370 1,040 1,660 5,240 6,680 1,660 497 337 9_...... 306 316 393 397 1,010 1,570 5,580 6,870 1,570 484 334 10...... 306 320 389 500 421 1,010 1,660 5,760 6,500 1,530 471 330 11...... 334 287 397 467 1,040 1,790 5,760 6,680 1,410 458 326 12...... 344 330 370 480 1,080 2,170 5,760 6,870 1,330 446 326 13...... 351 374 475 1,110 3,000 5,760 6,500 1,290 433 330 344 366 I 335 551 528 1,140 2,940 5,940 5,940 1,220 409 334 ' 15...... 366 355 497 579 1,040 2,540 6,500 5,060 1,140 401 334 16...... __ . 370 362 278 493 538 1,040 2,320 7,440 4,070 1,110 405 337 17...... _ . 348 450 378 497 .446 1,140 2,220 8,420 3,190 1,040 417 337 IS...... 355 565 425 612 405 1,290 2,380 8,020 2,820 976 409 337 19...... 378 788 405 647 437 1,370 2,590 6,680 2,640 944 397 340 20...... 378 776 362 569 592 1,290 2,820 5,760 2,640 882 381 405 '359 21...... 598 344 430 480 1,220 2,820 5, 760 2,760 852 374 425 22...... 374 520 291 463 1,220 3,000 5,410 3,000 816 366 401 23...... 362 502 \ 300 493 1,250 3,460 5,060 3,260 782 362 385 24...... _ . 340 458 )\ 350 1,330 3,120 5,080 3,540 754 359 374 25.. _ ..... _ - 348 429 351 502 1,410 2,760 5,410 3,460 738 355 366 26...... __ . ... 359 471 355 458 502 1,290 2,540 6,120 3,260 726 351 359 366 506 359 458 520 1,250 2,430 6,870 3,060 694 348 351 28...... _ .. 362 413 381 442 546 1,180 2,640 6,310 3,000 652 348 348 29.-. ___ . __ 362 326 421 409 1,250 3,060 6,500 3,000 622 348 340 .30.: _ ...... 359 340 524 409 1,370 R ton 6,120 2,880 598 351 337 31 ... ___ .. 351 511 378 1,490 5,580 579 348 NOTE. Braced figures show estimated mean discharge for periods indicated. Discharge estimated on account of ite Dec. 13-15, 22-24, Jan. 7-13, 21, 23-25, on basis of one discharge measurement, observer's notes,,and weather records. Shifting-eontrfitm'e'lhoausect -Slay 17-30, June 17-28. Discharge'interpo lated Oct. 3, Nov. 7-9, Dee. 5, .6, Mar. 6 and 13. ; '' " Monthly discharge of South Fork of Boise River near Lenox, Idaho, for the year ending Sept. 30, 1921 [Drainage area, 1,090 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum M«an square Inches Acre-feet mife October- ______...... 378 255 332 0.305 0.35 20,400 788 287 416 '>382 .43 24,800 524 '"278 375 .344 .40 23,300 647 291 479 .439 .51 29,500 579 351 457 .419 .44 25,4flO 1,490 593 1,130 1.04 1.20 69,500 April...... _ ...... _... 3,460 1,570 2,470 2.27 2.53 147,000 8,420 3,060 5,670 5.20 6.00 349,000 6,870 2,640 4,600 4.22 4.71 274,000 July ..-..,...... -...... 2,640 679 1,240 1.14 1.31 76,200 617 348 437 .401 .46 26,900 425 326 350 .321 .36 20,800 8,420 255 1,500 1.38 18.70 1,090,000 TRIBUTARY BASINS 223 MOORE CREEK NEAR ARROWROCK. IDAHO LOCATION. In sec. 21, T. 3 N., R. 4 E., Boise County, a quarter of a mile above highway bridge on Boise-Arrowroek road, half a mile above mouth, and 5 miles southwest of Arrowrock. DRAINAGE AREA. 426 square miles (measured on topographic maps). RECORDS AVAILABLE. October 1, 1914, to September 30, 1921 (discharge meas urements only, prior to December 1, 1915). GAGE. Graduations to feet and tenths chiseled on face of rock ledge on left bank of stream and marked with white paint; used prior to July 15, 1921. Temporary vertical staff at different datum about 700 feet downstream on left bank was used thereafter. Gage read by Oliver Call. DISCHARGE, MEASUREMENTS. Made from highway bridge a quarter of a mile below, or by wading. CHANNEL AND CONTROL. Bed composed of boulders, cobbles, and sand. Con trol shifts frequently owing to deposition of sand during low stages and cutting out during high stages. Stream frequently carries much sand and silt as a result of placer operations in Boise basin. One channel at all stages. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 5.5 feet April 3 (discharge, 2,170 second-feet); minimum stage, 0.60 foot (temporary gage) September 1, 2 (discharge, 33 second-feet). 1915-1921: Maximum stage, 6.3 feet April 11, 1916 (discharge, 3,140 second-feet); minimum stage, 0.60 foot August 17, 21-23, 1920 (discharge, 17 second-feet). ICE. Stage-discharge relation ordinarily not affected by ice. DIVERSIONS. No important diversions above station. REGULATION. None. ACCURACY. Stage-discharge relation not permanent. Bed of stream changes constantly, but variations in stage-discharge relation not great. Prior to July 15 a well-defined standard rating curve, and curves parallel thereto, used October 1 to July 15 based on frequent discharge measurements, A poorly defined curve, used for temporal y gage July 16 to September 30. Shifting-control method used for intervening periods as noted in footnote to daily discharge table. On account of rough water, especially at higher stages, it is difficult to read gage with refinement. Gage read to half-tenths once daily during high water and to hundredths during low-water-period. Daily discharge obtained by applying gage height to rating table. Because of rapid fluctuations during high-stage period, one daily reading may not always be a true index of mean daily flow. Daily discharge may also be somewhat in error due to shifting of channel, but monthly summary is good. COOPERATION. Several discharge measurements made by employees of United States Bureau of Reclamation and water master for Boise River. 224 SURFACE WATER. SUPPLY, 1921, PART XII B Discharge measurements of Moore Creek near Arrowrock, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec-.ft. Oct. 6 Keener0 and Tallman&_ 0.99 46.5 May 18 Paulsen and Steward °. 4.84 1,440 Nov. 24 2.08 193 4.28 1,030 Jan. 17 2.35 248 4 4.20 1,040 25 -. do.-,...... 2.80 315 9 .....do . - -. 4.08 1,050 Mar. 1 3 34 14 ..... do ...... 3.68 729 7 1,120 July 14 1.80 151 12 4.13 916 25 .92 80.2 Apr. 18 4.45 1,350 Aug. 8 Grill and Tallman .... .76 52.5 22 4.70 1,510 Sept. 16 Steward and Tallman. .77 51.0 » Employees of the United States Bureau of Reclamation. t> Water master for Boise River. Daily discharge, in second-feet, of Moore Creek near Arrowrock, Idaho, jo r the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. l __ _...... 52 74 181 612 499 1,310 1, 230 1,120 255 59 33 2 - ..... 74 181 568 234 626 1,580 1,230 1,120 255 59 33 3.... 52 81 181 1,170 700 2,170 1,310 1,170 234 67 35 4 __ ... 55 163 824 244 1,010 2,060 1,400 1,150 234 72 39 5 __ ...... 47 74 145 612 1,230 1,580 1,480 1,150 255 75 45 6...... 54 113 568 1,310 1,480 1,480 1,150 234 59 43 62 81 121 488 177 1,080 1,400 1,580 1,230 214 56 43 g 74 81 129 419 195 1,080 1,310 1,580 1,150 214 55 45 9...... 62 81 129 387 214 1,080 1,230 1,670 1,010 195 52 45 10...... 137 282 234 1,010 1,310 1,580 1,010 177 45 45 11 ... 73 68 238 338 939 1,400 1,480 1,010 177 45 48 12...... 88 88 145 218 352 939 1,480 1,480 939 159 45 48 13 ... 95 88 218 352 939 1,860 1,400 939 150 52 48 14 _ ... 88 95 113 238 381 1,080 1,860 1,480 812 142 48 52 15...... 110 88 84 259 412 1,010 1,670 1,580 812 134 45 52 [6...... 95 95 77 282 445 1,080 1,480 1,670 650 122 48 53 17-...... 88 234 98 259 300 1,080 1,400 1,880 650 112 52 52 18- . 95 452 255 1,310 1,310 1,530 581 112 52 40 19...... , 110 480 121 612 352 1,670 1,310 1,530 518 93 52 59 20_. _ ... 118 121 488 381 1,310 1,580 1,440 480 93 48 99 "330 21...... 95 129 412 1,230 1,480 1, 530 445 93 45 86 22 102 247 113 305 1,230 1,580 1,440 518 84 43 86 23-.. . 95 242 98 305 352 1,310 1,670 1,350 412 84 43 82 24- .. .. 95 199 113 320 381 1,480 1,480 1,350 381 75 45 79 25-...... 88 181 113 338 381 1,310 1,400 1,350 462 82 43 79 26...... 81 199 98 325 412 1,230 1,230 1,440 499 75 39 77 27-.. . 81 A1 G 325 1,150 1,080 1,350 352 75 39 77 28- . . 81 259 181 300 480 1,150 1,310 1,270 352 67 40 79 29..,.. ... _ 88 238 238 288 1,230 1,310 1,270 325 67 39 77 30-....,..,.... 81 199 330 288 1,230 1,230 1,190 312Oio 62 35 79 31- ... _ , ol01 ...... 887 955 1,230 1,120 " " 59 35 NOTE. Shifting-control method used Nov. 21-23, Apr. 3, May 17, June 3, 25,26. Discharge estimated Jan. 1 because of unreliable gage height. Discharge estimated Jan. 24 because of uncertain gage height and ice jlm. TEIBUTABY BASINS Monthly discharge of Moore Creek near Arrowrock, Idaho, for the year ending Sept. 30, 1921 [Drainage area, 426 square miles] Discharge in second-feet Run-ofl Month Per Maximum Minimum Mean square Inches Acre-feet mile October ______118 47 80.7 0.189 0.22 4,960 November ______.. _ 538 68 185 .434 .48 11,000 December. ______. ___ 887 77 163 .383 .44 10,000 January.... ______1,170 218 406 .953 1.10 25,000 February ______480 177 321 .754 .79 17,800 March ______1,670 499 1,120 2.63 3.03 68,900 April ..... __ ..... 2,170 1,080 1,480 3.47 3.87 88,100 1,880 1,120 1,440 3.38 3.90 88,500 June ______1,230 312 757 1.78 1.99 45,000 July...... __ ...... 255 59 141 .331 .38 8,670 August __ r ______... 75 35 49.4 .116 .13 3,040 September ______99 33 58.6 .138 . .15 3,490 2,170 33 518 1.22 16. 48 374,000 DIVERSIONS FROM BOISE RIVER, IDAHO Below mouth of Moore Creek and between gaging stations at Bowling ranch and Notus, 27 principal canals and a number of small farm laterals divert water from Boise River for use in irrigation. Daily gage-height records were obtained, frequent discharge measurements made, and records summarized under direction of A. V. Tallman, water master for Boise River. Records are available from 1919 to 1921. Record of daily diversions subse quent to 1915 is on file in office of Idaho commissioner of reclamation. Total amount of water in acre-feet, diverted by each canal during irrigation season of 1921 Main canal of United States Bureau of Phyllis. - _...--.. - -. -.. 115,000 Reclamation_____.______.... 628, 000 .. _ .. __ 5,120 Penitentiary______3,010 _ . ____ 5,770 Ridenbaugh______...... 128, 000 ______21,200 Bubb...... __...._...... __. 18,600 Cruzen .______.... 23,300 92,300 Boise City, No. 1....____.____.... 1,880 _ ..... _ 4,930 Settlers'.______4P,000 ______3,480 Thurmans mill ______.... 7,570 .- .. 67,300 Farmers' Union (includes Boise Valley ____-__ 7, 160 *» diversion) ______._____'. 59,900 Eureka No. 2... ______...... __ .. 15,200 Little Union.-i______.... 3,360 .... ____ 2,830 Dry Creek______.... 15, 900 ...... 2,040 Ballantine..______'...... 2,440 Miscellaneous.. :.'...... ___ ... 8,540 7 Eagle Island Canals______...... 13. 200 Middleton Water Co______.... 28,000 1, 350, 000 Middleton Mill ditch...__ __.'__... 15,000 Combined monthly discharge of canals diverting from Boise River, Idaho, during irrigation season of 1921 Discharge in second-feet , Month Run-ofl in Maximum Minimum Mean acre-feet 4,380 1,310 2,580 154,000 4,700 3,180 4,160 256,000 4,850 4,450 4,660 277, 000 July...... 4,890 4,010 4,560 280,000 4,110 3,340 3, 770 232,000 September ______.. __ .... 3,340 1,720 2,530 151, 000 1,350,000 226 SURFACE WATEE SUPPLY, 1921, PART XII B MALHEUR RIVER NEAR DREWSEY, OR.EG. LOCATION. In SW. ^ sec. 32, T. 20 S., R. 36 E., at Drinkwater ranch 2 miles below mouth of Otis Creek, 4 miles below Drewsey, Harney County, and 6 miles above high-water line of Warmsprings reservoir. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. June 1 to December 29, 1920, and April 11 to September 4, 1921. The records at this station are not directly comparable with records at station referred to as Malheur River near Drewsey March 9 to September 30, 1914, because of inflow of Griffin, Otis, and Stinking Water creeks. GAGE. Stevens 8-day water-stage recorder on left bank referenced to outside staff gage beginning July 14, 1921, inspected by Silas Tillotsen. Staff gage read three times a week up to July 5. DISCHARGE MEASUREMENTS. At low and medium stage made by wading 300 feet below gage; at high stages made by combining discharge of Malheur River at bridge near Drewsey and Otis Creek at bridge near mouth. CHANNEL AND CONTROL. Bed composed of gravel and sand. Control likely to shift. One channel except at extreme high stage when water would over flow left bank. EXTREMES OF DISCHARGE. Maximum stage recorded during the period ending September 4,1921, 5.63 feet at 1 a. m. April 14 (discharge, 2,240 second- feet); minimum stage recorded, 0.75 foot August 7 (discharge, 7 second- feet). 1920-1921: Maximum stage recorded that of April, 14, 1921; minimum stage recorded, 0.62 foot August 17, 1920 (discharge, 2.6 second-feet). ICE. Stage-discharge relation not affected by ice during period covered by records. DIVERSIONS. Several small diversions above station, no diversions around station or between station and Warmsprings reservoir. REGULATION. None. ACCURACY. Stage-discharge relation practically permanent. Rating curve fairly well defined below 1,200 second-feet. Operation of recorder satisfac tory except for short periods as noted in footnote to table of daily discharge. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspecting recorder graph or weekly gage reading Au gust 2 to September 4. Records good except for periods when discharge was estimated or in excess of 1,500 second-feet when they are fair. Discharge measurements of Malheur ftiver near Drewsey, Oreg., during the year ending Sept. SO, 1921 , Gage Dis Gage Dis Date Made by- height charge Date Made by height charge Feet Sec.- ft. Feet See.-ft. Apr. 10 4.00 1,160 W. T. Eilertsen" ...... 1.65 96 June 22 1.92 158 July 21 W.W. Yanceyo.-- ...... 92 17. ft a water masters for Malbeur County. TRIBUTARY BASINS 227 Daily discharge, in second-feet, of Malheur River near Drewsey, Oreg., far the year ending Sept. 80, 1921 Day Oct. Nov. Dec. Apr. May June July Aug. Sept. 1 ___ ... _ ... ____ .... 26 43 68 1,680 1,150 100 12 2 ... ______.. __ ..... 28 36 71 1,550 940 91 13 | , 3 . ______...... 36 72 1,410 910 76 4 _____ . _ ...... 27 41 68 1,320 880, 73 12 5 ______. __ . 27 40 64 1,350 850 71 10 6...... 28 38 50 1,320 762 70 7 ______...... 28 35 60 1,220 708 64 7 a _ . __ ..... ____ . w 42 56 1,320 708 49 9 . ______.. __ ...... 32 49 58 1,380 708 40 10 __ .....1...... 32 56 66 1,350 575 33 8 11 __ ...... ____ . _ .... 33 46 70 1,250 1,320 503 30 12 __ .... _ . _ ... ___ ... 34 44 85 1,380 1,280 453 27 13...... 34 56 OA 1,890 1,220 406 23 14 __ ... __ . __ . __ .... 38 ^ *« 71 2,240 1,180 331 22 9 15 ___ __ . ______. ... 38 ! 56 62 2,240 1,250 307 19 16 __ . _ .. ____ ...i..,.. 30 56 1,890 1,350 282 17 17 ... _____ ... _ . _ . _ . 62 1,680 1,550 266 14 9 18...... 104 " 1,620 1,720 253 12 19 ____ ..... ___ ...... 168 1,620 234 13 20 ____ ... __ ...... 173 64 1,480 216 14 1,900 21 ____ ...... _ ... 108 56 1,620 190 14 9 22 __ . _ ...... __ . __ .... 87 58 1,720 163 14 23 .--..-..-...... 75 52 1,550 152 14 24 _____ ...... _ ... ___ . 42 68 58 2,170 1 OCfl. 152 14 25 ____ ...... ___ .. 59 60 1,890 1,280 163 13 9 26 __ ...... ______...... 112 65 1,620 1,250 145 13 27 . _ ...... _ ..... ___ .. 208 68 1,410 1,220 128 12 28 ___ ...... _ . __ . ... 89 71 1,480 1,180 110 12 9 29 ...... ___ ...... 68 75 1,890 102 12 30 ...... 59 1,820 1,090 98 12 \ 9 31 ...... 46 1,030 12 r 9 NOTE. No gage-height record (discharge estimated) for following periods; Oct. 17-30, Nov. 14-15, Dec. 16-19, Apr. 19-23, Aug. 3-6,8-13,15-20,22-27, 29-31, and Sept. 1-3. No record Dec. 30 to Apr. 10. Monthly discharge of Malheur River near Drewsey, Oreg., for the year ending Sept. 80, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 1 26 : 36.6 2,250 208 35 72.3 4,300 85 50 64.3 3,700 Aprilll-30 . - -.-- 2,240 1,250 1,800 71,300 May ____ .... ____ . ______--.---...... 1,720 1,030 1,360 83,600 1,150 98 428 25,500 July...... :...... 100 12 32.2 1,980 13 7 9.1 559 10.5 S3 NOTE. See footnote to table of daily discharge. ^WARMSPRINGS RESERVOIR NEAR RIVERSIDE, OREG. LOCATION. l!n SE. *^ sec. 8, T. 23 S., R. 37 E., on Malheur River 4 miles above junction with South Fork and 4 miles above Riverside, Malheur County. RECOBDS AVAILABLE. January 24, 1920, to September 30, 1921. GAGE. Tape gage with float set to read depth of water above bottom of outlet tunnel; read by U. S. Yost. Elevation of bottom of tunnel, 3,327.00 feet above mean sea level. 14234 25 16 228 SURFACE WATER SUPPLY, 1921, PART XII B EXTREMES OF STAGE. Maximum stage recorded during year, 75.42 feet April 24 (quantity stored, 176,400 acre-feet); minimum stage recorded, 17.30 feet Oc tober 1 (quantity stored, 9,560 acre-feet). Irrigation season closed September 24, stage 57.50 feet (quantity stoied, 103,500 acre-feet). COOPERATION. Daily gage readings and storage table furnished by the Warm- springs Irrigation District, C. L. Batchelder, manager. Warmsprings reservoir stores water to irrigate 31,618 acres of land on either side of Malheur River, extending from the mouth of the canyon to Ontario. Capacity of reservoir at spillway level, 74.0 feet, is 170,000 acre-feet. Monthly stage and contents of Warmsprings reservoir near Riverside, Oreg.,for the year ending Sept. 30, 1921 Loss or Loss or Gage gain Gage gain Date height Storage during Date height Storage during month month Feet Acre-feet Acre-feet Feet? Acre- feet Acre-feet Oct. 31. ____ . ... 19.26 11,900 +2, 400 May 31...... 74.93 174,200 -1,100 Nov. 30 ______22.72 16,600 +4,700 73.97 169,900 -4,300 Dec. 31 ____ . _ 26.90 23,000 July 31...... 67.50 143,000 -26,900 Jan. 31. ____ . ... 33.60 36, 200 + 13,200 Aug. 31 ...... 61.46 118, 800 -24,200 Feb. 28 ...... 41.60 56,000 Sept. 30...... 57.60 103,800 -15,000 Mar. 31... _____ 75^18 175, 300 +45! 900 +94,300 MALHETTR RIVER BELOW WARMSPRINGS RESERVOIR, NEAR RIVERSIDE, OREG. LOCATION. In SW. ^£ sec. 17, T. 23 S., R. 37 E., 1 mile below Warmsprings dam 3 miles above mouth of South Fork, and 4 miles northwest of Riverside, Malheur County. From March 18, 1919, to April 27, 1920, station was 1 mile upstream, in SW. % sec. 8, T. 23 S., R. 37 E.. 250 feet below dam. DRAINAGE AREA. About 1,109 square miles. RECORDS AVAILABLE. December 9, 1914, to July 4, 1917, and March 18, 1919, to September 30, 1921. From January 3, 1906, to March 31, 1907, and December 15, 1908, to May 25, 1910, records were obtained at a station about 4 miles below, at Riverside. GAGE. Gage is a vertical staff in two sections on the left bank. IT. S. Yost, observer. From March 18, 1919, to April 27, 1920, a vertical staff on right bank, about 300 feet below dam in SW. ^ sec. 8, T. 23 S., R. 37 E. DISCHARGE MEASUREMENTS. Made, from a highway bridge about one-quarter mile below dam or by wading. CHANNEL AND CONTROL. Concrete control about 200 feet below gage, permanent except for debris collecting occasionally. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 6.97 feet at 6 p. m. April 24 (discharge, 1,480 second-feet); seepage amounted to 1 second- foot when gates from reservoir were closed October 1 to April 18 and Sep tember 24-30. 1906-1921: Maximum discharge recorded, 5,490 second-feet March 2, 1910; minimum discharge recorded prior to construction of dan|, practically no flow during August, 1910; determined by subtracting discharge of South Fork from discharge of main river below South Fork. Minimum discharge since construction of dam somewhat less than 1 second-foot when gates are closed; stream was dry August 1 to September 16, 1919, while dam was being constructed. ICE. No water released from dam during winter. DIVERSIONS. A large area of bottom land is irrigated with flood water above station. TRIBUTARY BASINS 229 REGULATION. Flow past station entirely controlled by operation of gates in Warmsprings dam beginning November, 1919. ACCURACY. Stage-discharge relation practically permanent. Rating curve well denned. Gage read to hundredths twice daily. Daily discharge determined by applying mean daily gage height to rating table. Records good. COOPERATION. Record furnished by Warmsprings Irrigation District and water master for Malheur County. Discharge measurements of Malheur River below Warmsprings reservoir, near River side, Or eg., during the year ending Sept. 30, 1921 Gage Dis Gage- Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec .-ft. *.pr. 19 4.37 204 H. G. Kennard... __ . 6.40 1,160 19 do . __. 4.48 295 23 do 6.67 1,320 20 _ ..do...... _ . .... 5.03 528 June 1 Bones and Kennard .... 5.52 745 20 do ...... 5.23 655 July 27 W.W.Yancey«...... 4.60 360 21 .....do...... 5.50 830 Aug. 7 H. G. Kennard __ .... 4.50 3i3 " Water master, Malheur County. Daily discharge, in second-feet, of Malheur River below Warmsprings reservoir, near Riverside, Oreg., for the year ending Sept. 30, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 1,180 740 278 353 315 16... _ .. 1 858 250 433 315 250 2... __ 1 1,130 740 278 353 315 17..... _ 1 956 236 433 315 210 3... _ .. 1 1,080 662 278 345 315 18 - 1 1,230 217 433 315 210 1 1,100 649 304 315 315 19. _ .... 271 1,1CO 207 433 308 210 5 1 931 605 315 315 315 20...... 462 1,080 191 433 278 188 6...... 1 931 579 315 315 315 21 __ .... 764 1,080 181 433 278 148 7 ..... 1 882 561 326 315 315 22. _ . ... 1,230 1,130 226 433 278 148 8. _ .... 1 834 522 353 315 315 23...... 1,330 1,130 154 433 278 98 g 858 740 315 24 1,430 1,030 115 433 278 1 10 1 471 353 315 308 ne 1,430 956 257 412 278 1 11 _ . ... 1 858 433 353 315 278 26 1,280 882 200 392 278 1 12...... 1 858 392 412 315 278 27. 1,130 834 197 384 278 1 13.. _ ... 1 834 357 433 315 278 28 _ .. _ 1,030 787 200 353 278 ] 14...... 1 433 315 278 29 . 1,080 787 240 353 296 1 15...... 1 834 278 433 315 278 30..... _ 1,180 764 278 353 315 1 qi 764 353 315 NOTE. Gates from reservoir closed Oct. 1 to Apr, 18 and Sept. 24-30; discharge estimated, 1 second- foot. . Monthly discharge of Malheur River below Warmsprings reservoir, near Riverside, Oreg., for the year ending Sept. 30, 1921 Discharge in second-feet Month Run-off Maximum Mlinimum Mean in acre-feet October.. __ ... ____ ... ______. 1 61 60 1 61 January ______1 61 i 56 March" ______.... __ ...... __ ...... i 61 April ______1 ______.... 1,430 I 421 25,000 1,230 764 949 58,400 June ... __ .... ______.. _ ..'.. 740 115 373 22,200 July . _ . __ ...... _ ...... , 433 278 378 23.200 X 353 278 307 18,900 315 1 200 11,900 The year ______1 ...... 1,430 221 160,000 NOTE. See footnote to table to daily discharge. 230 SURFACE WATER SUPPLY, 1921, PART XII B MALHEUR RIVER NEAR NAMORF, OREG. LOCATION. In SE. ^/i sec. 2, T. 21 S., R. 40 E., at F. J, Froman's ranch, 1 mile south of east portal of tunnel No. 1 on Oregon & Eastern Railroad, 3 miles west of Narnorf flag station, and 15 miles west of Harper post office, Mal- heur County. North Fork of Malheur River enters near Juntura, 20 miles above. DRAINAGE AREA. 2,560 square miles (measured on United States Land Office map). RECORDS AVAILABLE. May 24, 1913, to September 30, 1921. GAGE. Inclined staff on right bank, 300 feet above Froman's house; read by Mrs. Ada Hite. New gage with datum 1.53 feet above old, installed August 17, 1918. DISCHARGE MEASUREMENTS. Low-stage measurements made by wading; medium and high-stage measurements made from cable about 300 feet above gage. CHANNEL AND CONTROL. Control, 400 feet below gage, composed of cobbles and coarse gravel; clean. Channel between control and gage and above gage is wide and current is sluggish. One channel at all stages. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 5.23 feet February 11 (discharge, 3,950 second-feet); minimum discharge, 43 second feet, October 1-5. 1913-1921: Maximum stage recorded, 10.7 feet February 6, 1916 (dis charge not determined on account of ice jam); maximum open-water stage recorded, 9.1 feet during night of February 7, 1916 (discharge, 8,450 second-feet); minimum stage, 0.60 foot July 25, 1919 (discharge, 4 second- feet). Highest stage in recent years 11.3 feet, March 1, 1910, determined by leveling to high-water marks pointed out by F. J. Froman June 4, 1918 (discharge estimated from extension of rating curve, 12,600 second-feet). The floods of March 7 and 9, 1894, are said to have been about 0.3 foot higher. ICE. Stage-discharge relation occasionally affecljed by ice. DIVERSIONS. Many small diversions are made from the river and its branches above the gage, the largest being made near Drewsey and from North Fork near Beulah. REGULATION. Flow controlled to a large extent by Warmsprings dam begin ning November, 1919. ACCURACY. Stage-discharge relation changed during high water of February 11. Rating curves well defined above and poorly defined below 150 second-feet. Staff gage read to hundredths once a day. Daily discharge ascertained by applying daily gage height to rating tables. Records good, except for discharges below 150 second-feet for which they are fair. Discharge measurements of Malheur River near Namorf, Or eg., during the year ending Sept. 80,1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet See.-ft. Feet Sec. -ft. Apr. 25 Eilertsen«and Yancey. 3.89 2,000 July 1 Eilertsen and Hite- .... 1.97 420 26 __ do. _ ...... 3.78 1,940 29 Yancey 0 and Hite ..... 2.00 405 a Deputy water masters of Malheur County. TRIBUTARY BASINS 231 Daily discharge, in second-feet, of Malheur River near Namorf, Oreg.,for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 133' l __ ...... 62 81 320 820 820 1,830 1,400 405 385 355 2 ___ ...... 43 62 81 360 130 820 965 1,720 1,400 415 395 355 3.^--...... 58 86 350 127 1,300 965 1,120 1,400 415 385 365 4 _____ .. _ . 43 58 90 360 133 1, 500 965 1,210 1,350 425 385 375 5...... 43 58 90 340 133 2,070 928 1,120 1,350 425 375 375 6...... 46 58 90 270 139 820 1,400 1,300 425 375 375 7...... 46 62 90 250 139 750 r,400 1,300 425 375 365 8...... 46 62 121 212 139 1, /UU 750 1,400 1,120 455 375 365 9. ___ ...... 44 62 115 139 180 785 1,400 1,080 425 375 365 10. _ .. __ .... 46 65 110 133 270 425 785 1,400 4,040 425 385 355 11...... 49 65 110 139 3,950 550 820 1,400 1,000 425 375 365 12 __ ...... 49 63 105 139 1,950 680 890 1,400 890 455 375 355 13...... 49 65 105 139 1,500 750 890 1,400 890 455 375 355 14.. __ ...... 49 65 102 139 1,120 750 1,000 1,400 855 485 375 365 15 ...... 52 68 100 139 1,300 785 820 1,400 820 485 375 375 16.... __ ...... 55 68 105 139 528 820 750 1,500 820 485 375 375 17 ...... 55 72 110 139 528 1,120 750 1,500 785 485 375 345 18 ...... 52 77 105 145 528 1,720 680 1,610 750 485 375 280 19...... _ ..... 57 77 105 159 485 1,210'890 648 1,720 750 485 365 289 20 . 55 77 100 145 425 1,040 1,830 750 485 355 294 21.... _ ...... 55 81 105 139 455 715 1,350 2,070 715 455 345 272 22...... 58 81 105 133 425 680 1,500 2,190 680 455 345 264 23 ...... 58 86 100 139 715 2,070 2,450 648 455 335 248 24. _ .. __ .... 57 86 100 145 680 2,190 1,120 648 425 345 205 25 58 86 102 139 410 680 2,070 1,300 615 455 345 102 26. _ ...... 58 88 105 133 615 1,950 1,120 615 455 345 99 27 _ ...... 58 90 100 127 405 550 1,610 1,400 615 455 345 S9 28...... 62 90 105 121 395 550 1,610 1,120 582 425 345 95 29 62 86 115 127 550 1,400 1,400 550 425 355 95 30 ...... 62 86 250 183 615 1,610 1,120 425 465 345 95 31- __ ...... 60 260 139 680 1,400 405 355 NOTE. Discharge estimated Oct. 1-3 because of no gage-height record; Dec. 6,7, and 14 because stage- discharge relation was affected by slush ice; Feb. 2 and 23-26 because of no gage height record; Mar. 6-P, because observer's readings appear to be too high by comparison with records for stations near River side and Hope. Monthly discharge of Malheur River near Namorf, Oreg.,for the year ending Sept. 30, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 62 43 52 3,200 90 58 72.1 4,290 260 81 111 6,820 360 121 182 11,200 3,950 127 613 34,000 2,070 425 905 55,600 April...... 2,190 648 1,140 67,800 2,450 1,120 1,480 91,000 1000 425 905 <63,900 July --. - _ . . - 485 405 445 27, 400 395 335 366 22,600 376 95 287 17,100 3,950 43 545 395,000 232 SURFACE WATER SUPPLY, 1921, PART XII B MALHETTR RIVER NEAR HOPE, OREG. LOCATION. In SW. % sec. 5, T. 19 S., R. 43 E., half a mile above intake of Vines canal, half a mile above railroad bridge, 15 miles west of Vale, and 6J/2 miles west of Hope, Malheur County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. May 30 to October 26,1919; May 5 to September 30,1920; fragmentary record during 1921. Station maintained half a mile below intake of Vines canal, March 22 to September 30, 1914. GAGE. Stevens continuous water-stage recorder on left bank, referred to out side staff gage. DISCHARGE MEASUREMENTS. Made from cable at gage or by wading. CHANNEL AND CONTROL. Bed composed of sand, gravel, and boulders; sub ject to shift at high stages. One channel at all stages. EXTREMES OP DISCHARGE. Maximum discharge during year estimated as the same amount as for the Namorf station, 3,950 second-feet (recorder not operating on that date); minimum discharge, estimated as 50 second-feet October 1. (Recorder not operating until October 8.) 1919-1921: Maximum discharge, that of 1921; minimum stage from water-stage recorder, 0.02 foot from 5-9 p. m. September 2, 1919 (discharge, 3.5 second-feet). ICE. No records during winter. DIVERSIONS. Several small canals divert water above this point. REGULATION. Flow controlled to a large extent by Warmsprings dam 60 miles above. ACCURACY. Stage-discharge relation permanent. Rating curve well defined. Operation of water-stage recorder unsatisfactory except fqr shoit periods. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspecting recorder graph. Records good for days when gage heights are available. The record a't this station shows the discharge above the intakes of the canals of the Warmsprings Irrigation District. It was used in partly defining and checking the rating for the station qn Malheur River at Namorf. Because of the numerous breaks in the record, and because the flow at Namorf, except for diversions at Harper, is practically the same as that at this station, no attempt was made to estimate the discharge for periods of no gage record. Discharge measurements of Malheur River near Hope, Oreg., during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feel Sec.-ft. Feet Sec.-ft. July? Yancey and Eilertsen « . 2.13 439 Aug. 3 H. G. Kennard& ___ 2.08 394 21 H. G. Kennardi>. 2/22 463 Sept. 22 ..... do 1.76 oDeputy water master of Ma-lheur County. & Water master. TRIBUTARY BASINS 233 Daily discharge, in second-feet, of Malheur River near Hope, Oreg., for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Mar. Ap»r. May June July Aug. Sept. 1. _ . _ . _ ...... 69 1,770 395 2 __ . _ . ______69 1,720 400 3...... ______63 410 390 4...... __ . _ 54 405 5...... :.. _ ..A 52 415 6. _ ...... 56 634 430 7 _____ ...... 58 420 8..... _ ...... 53 68 WILLOW CREEK HEAR MALHEUR, OREG. LOCATION. In sec. 6, T. 14 S., R. 41 E., at Stanfield ranch, half a mile above flow line of reservoir No. 3 t>f Willow River Land & Irrigation Co. and 2J^ miles south of Malheur, Malheur County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. November 20, 1904, to August 14, 1906, March 19, 1910, to August 2, 1911, March 27, 1912, to September 30, 1915, and March 1 to September 30, 1921. GAGE. Barrett and Lawrence water-stage recorder on left bank referenced to outside vertical staff gage, the zero of gage was set at same level as top of low-water section of control; inspected two or three times each week by James Minongham. DISCHARGE MEASUREMENTS. Made from bridge 200 feet below gage or by wading. CHANNEL AND CONTROL. Just below gage is an artificial control of concrete. The crest is 2 feet above stream bed, 8 inches wide, inclined toward right end where there is a low-water section 3 feet long and 6 inches wide. The cut-off walls at ends conform to slope of the banks. Because the cut-off wall in bed of stream was not deep enough some water leaked under the control. The stream bed is sand and loose gravel. EXTREMES OP DISCHARGE. Maximum stage recorded during period March 1 to September 30, 3.1 feet at midnight March 17 (discharge, 310 second-feet); minimum flow estimated by observer as 0.2 second-foot on September 9. ICE. Stage-discharge relation seriously affected by ice during winter. 234 SURFACE WATER SUPPLY, 1921, PART XII B DIVERSIONS. Several small diversions above station; reservoir No. 3 just below. Eldorado ditch diverted 4,480 acre-feet from tributaries of Burnt River into basin of Willow Creek, 25 miles above gaging station, during period April 9 to September 30. ACCURACY. Stage-discharge relation permanent except during first period of high water March 17-27. Rating curves well defined except one used March 17-27. Operation of water-stage recorder satisfactory except for a few days. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspecting recorder graph, except March 17-27 when daily discharge was obtained by applying mean gage height to a curve drawn through measurement made March 23 and 24 and parallel to standard curve. Records excellent except March 17-27, when they are fair. Discharge measurements of Willow Creek near Malheur, Oreg., during the period Mar. 1 to Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Feet Sec.-ft. Mar. 23 2.35 1QK May 17 2.26 147 24 ..do ... __ .... 2.38 1O7 19 .....do...... 2.34 153 31 H. G. Kennard fc. __ .. 2.06 110 25 .....do. ______. .... 2.41 157 Apr. 12 W. T.Eilertsen. 1.94 104 30 J. W. Bones _____ .. 2.00 108 13 . do...... 2.08 122 2 W. T.Eilertsen __ ... 1.76 81 23 .....do ...... 1 94 104 8 do...... 1.36 42 29 .....do...... 1.83 89 15 do 1.02 20 ..do ...... 1 80 87 22 ... ..do...... 1.03 20 5 do...... 1.80 85 23 1.00 20 11 do... __ ...... 1 7^ 76 July 4 .70 11.2 13 __ .do ____ . _ . _ . 1 60 65 28 H. G. Kennard _ ...... 35 4.0 0 Deputy water master. 6 Water master. Daily discharge, in second-feet, of Willow Creek near Malheur, Oreg., for the Mar. 1 to Sept. 30,1921 Day Mar. Apr. May June July Aug. Sept. 1 __ . _ . ___ . __ ...... 121 96 90 11 4.8 1.9 2 __ ...... _ ...... ___ . ___ . .... 1 - 134 96 80 10 5.0 1.7 3 _.._._...... 141 90 74 9.7 5.8 2.1 4 __ . ______. ______. .... 13 148 eo 63 11 5.6 2.4 6 ____ ...... ____ . ___ . _ - 134 85 58 10 5.6 3.1 30 6 ...... _ r ...... 121 85 54 10 5.3 2.3 7 ...... 108 74 50 9.1 4.8 .5 8 ...... 1 58 96 68 44 9.5 4.6 .4 9 .- _ . ____ ...... _ . _ .. 50 90 74 35 11 4.4 .2 10 ...... _...... 54 eo 80 31 11 4.2 1.2 11. ' ____ ...... 102 98 80 30 917 3.9 2.1 12.. __ .. ___ - _ -... _ .. ___ . 58 102 74 28 9.1 5.1 2.5 13.. _ ___ ...... __ . 68 114 68 26 8.2 6.6 3.6 14 _____ . _ ..... ___ ... ___ ... __ .. 68 128 63 23 6.4 6.4 4.5 15 63 114 68 21 5.6 6.1 5.3 16. _ ,. . . __ . _ ...... 85 108 114 19 5.1 5.4 5.8 17. _ _ ...... 216 ' 108 141 21 5.9 5.4 5.8 18 - ___ ...... _ ...... 281 108 162 24 6.1 5.4 5.8 19.. _ _ ...... _ .... ___ ..... 251 96 169 26 7.1 5.4 6.4 20.... _____ ...... 222 85 . 198 23 7.1 5.6 6.4 21.1' __ . __ . . .. _ ...... 192 66 /22 21 7.1 5.0 7.1 22 ______...... ___ ... _ ..... ____ .... 216 86 206 20 7.7 4.8 7.5 23.. ______..... _ ...... _ ...... 200 102 198 19 8.6 3.9 7.5 24 ...... 192 108 184 19 8.2 4.6 7.5 25..... - ...... 200. 108 169 17 7.7 48 6.9 26...... 170 102 155 17 6.6 4.8 6.9 27. .-.- _ __ . _ ...... _ ..._ 150 90 134 17 7.5 3.9 6.9 28 121 eo 128 15 6.1 3.3 *. 4 29 . a._. i.-.ui. i ^ _ .....-i _ __ -.. 141 96 114 ,13 5.1 3.1 6.1 30 __ ..... ______. ______. 134 90 114 11 4.0 L9 6.4 31 114 102 4.6 1.9 NOTE. No gage-height record Mar. 1-3, 5-7 (discharge estimated); Mar. 18-29 (discharge interpolated), ug. 6 and 9; Sept. 8-10 (discharge estimated by observer). TRIBUTARY BASINS 235 Monthly discharge of Willow Creek near Malheur, Or eg., for the period Mar. 1 to Sept. SO, 1921 Discharge in second-feet Month Kun-off in acre-feet Maximum Minimum Mean \ 281 114 7,010 148 85 107 6,370 May ______. ______222 63 119 7,320 90 11 33.0 1,960 July...... 11 4.0 7.93 488 August ______...... 6.6 1.9 4.75 292 September ______...... 7.5 .2 4.43 264 The period ______- ...... 281 .2 55.9 23,700 PAYETTE RIVER NEAR HORSESHOE BEND, IDAHO LOCATION. In sec. 14, T. 7 N., R. 2 E., 100 feet east of tracks of Idaho North ern branch of Oregon Short Line Railroad and 1}^ miles northeast of Horse shoe Bend, Boise County. DRAINAGE AREA. 2,230 square miles (revised measurement on topographic and Land Office maps). RECORDS AVAILABLE. November 23,1912, to September 30,1916, and July 27, 1919, to September 30, 1921, at present site; February 13, 1906, to Novem ber 22, 1912, at old site in sec. 2, 2 miles upstream. Two small creeks enter between the two stations. GAGE. Barrett and Lawrence water-stage recorder on right bank 200 feet above railroad crossing; inspected by S. H. McAlister. Inclined staff on right bank at former site. DISCHARGE MEASUREMENTS. Made from cable 200 feet below gage. CHANNEL AND CONTROL. Bed of stream composed of cobbles and coarse gravel with a few large rocks. Control shifts slightly. One channel at all stages. EXTREMES OF DISCHARGE. Maximums tage during }rear from water-stage recorder 9.57 feet at 1 p. m. June 9 (discharge, 22,100 second-feet); minimum stage, 1.26 feet 4 to 8 p. m. October 6 (discharge, 922 second-feet). 1906-1916; 1919-1921: Maximum stage recorded that of June 9, 1921; minimum stage, 0.79 foot November 28, 1919 (discharge, 550 second-feet). ICE. Stage-discharge relation somewhat affected by ice. DIVERSIONS. Only a few small ranch diversions are made above station; rec ord gives practically total flow from upper Payette basin. REGULATION. Flow during July, August, and September slightly regulated by installation and later gradual removal of a temporary dam at outlet of Payette Lake 70 miles above. . ACCURACY. Stage-discharge relation changed during ice-affected period De cember 17-26. Two rating curves used which are well defined between 630 and 15,000 second-feet. Operation of water-stage recorder satisfactory ex-> cept for period August 15 to September 26. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph. Records good, except for estimated and interpolated, periods, which are fair. COOBERATION. Gage-height record furnished by Idaho Power Co. 236 SURFACE WATER SUPPLY, 1921, PART XII B Discharge measurements of Payette River near Horseshoe Bend, Idaho, during the year ending Sept. SO, Gage Dis Gage Dis Date Made by height charge Date Made by height charge / Feet Sec.-ft. Feet Sec.-ft. Dec, 2 F. M. Atkinson ...... 2.27 2.140 May 13 6.93 12,500 Feb. 10 A. G.Fiedler ...... 1.93 1,560 19 ..do.. _ ...... 9.11 20,600 25 ...-.do. .-...-...... 2.10 1,740 C. G. Paulsen __ . _ . 8.87 19,100 ?6 .-...do...... 2.15 1,840 July 16 C. W.Kief...... 2.77 2,720 ipr. 6 4.08 5,210 Aug. 28 .... .do...... 1.49 1,140 11 4.20 5,540 do...... 1.43 1,110 Daily discharge, in second-feet, of Payette River near Horseshoe Bend, Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1...... 958 1,180 1,980 2,300 1,410 1,880 4,680 6,440 17,300 7,340 1.640 1,260 2 958 1,130 2,050 1,450 1,940 5.230 6,890 16, 900 6,890 1,640 1,300 3 ______958 1,140 1,980 1,420 2,080 6,440 7,570 17, 300 6,440 1,640 1,330 4 ______958 1,150 1,920 2,220 1,430 2,4.50 6,660 8.060 17, 7CO 6,000 1,700 1,310 5 . 958 1,120 1,650 ! 1,420 3,110 5,890 9,090 18, 100 5,560 1,640 1,290 6 ___ ...... 940 1, 050 1,410 2,150 1,370 3,200 5,230 9,360 18,800 5,120 1,640 1,270 7 1,010 1,130 1,410 1,940 1,290 3,200 4,900 10,200 19, 200 4,900 1,640 1,250 8 .... 1,130 1,130 1,590 1,880 1,300 3,200 4,580 11, 000 20, 400 4,680 1,640 1,230 9...... 1,130 1,100 1,670 1,820 1,390 3,020 4,580 11.600 21,790 4,580 1,630 1,210 10-. 1,140 1,100 1,600 1,470 3,020 4,900 12, 100 21, 700 4,370 1,610 1,190 11... .. 1,300 1.030 1,490 1,380 1,600 2,930 5,450 12,100 21,300 4,160 1,590 1,170 12 ...... 1,330 986 1,380 1,330 1,640 2,930 6,110 12,400 20,800 3,960 1,570 1,150 13 ___ ...... 1,350 1,100 1,430 1,700 3,020 7,340 12, 400 20,000 3,760 1,550 1,130 14..... _ .... 1,340 1,140 1.420 1, 570 1,940 3,110 8,060 13.300 18,800 3,570 1,520 1,110 15..... _ .... 1,400 1,110 1,240 1,700 2,150 3,110 7,340 14,500 17,300 3,200 1,470 1,090 16...... 1,420 1,130 1,640 2, 150 3,020 6,660 16,200 15,500 2,930 1,070 17. _ . _ .... 1.360 1,490 1,640 1,940 3,470 6,440 18, 100 13,900 2,850 1,070 18 . . 1.340 2,650 1,880 1,820 4,680 6,660 18, 100 12,700 2,680 1,080 .19 __ ...... 1, 350 3,400 2,150 1,880 6,000 7,340 20,000 11,300 2,520 1,090 20 1,350 3,740 2,080 1,880 5,450 7,810 20, 000 10,400 2,450 1, 530 1,090 21 _ . _ ..... 1,350 .3,480 1,880 1,880 5,010 8,310 20,000 9,900 2,370 1,080 22 _____ .... 1,340 3,060 1,300 1,700 1,760 4,680 8,060 19,200 9,900 2,300 1,080 23 ...... 1,340 2,820 1,610 1,760 4,470 8,570 18,100 9,900 2,150 1,070 24 _____ ... 1,330 2,650 1,760 1,760 4,680 8,310 17, 700 9,900 2,080 1,420 1,070 25. _ ...... 1,330 2,500 1,820 1,760 4,680 7,340 18,100 10,200 2,020 1,340 1,060 26 ___ ...... 1,320 2,500 1,760 1,760 4,370 6,660 18,800 9,630 2,020 1,270 1,060 27. ___ ...... 1,310 2,740 1,260 1,700 1,820 4,060 6,110 19,600 9,090 1,940 1,200 1,060 28 _____ . ... 1,310 2,420 1,360 1,640 1,820 3,860 6,000 18,800 8,570 1, 880 1,120 1,050 29. _ ...... 1,300 2,120 1,470 1,550 3,860 6,220 18,400 8,310 1,820 1,160 1,010 30.. _ ...... 1,290 1,980 2,080 1,520 4,060 6,440 17,700 7,810 1,760 1,190 1,000 31... ,.- 1,270 2,520 1,440 4.260 1,700 1,220 NOTE. Braced figures show estimated mean discharge for periods indicated. Discharge estimated by comparison with records at stations above Aug. 16-23. Stage-discharge relation affected by ice Dec. 17-26. Discharge interpolated Oct. 21-24, Aug. 25-27, Aug. 29 to Sept- 2, Sept. 4-15, 17, 18, and 20-26. TRIBUTARY BASINS 237 Monthly discharge of Payette River near Horseshoe Bend, Idaho, for the year ending- Sept. 20, (Drainage area, 2,230 square miles] ./ Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile 1,420 940 1,230 0.552 0.64 75,600 3,740 986 1,840 .825 .92 109,000 2,520 1,170 1,520 .682 .79 93, 500 January . ______2,300 1,330 1,800 .807 .93 111,000 2,150 1,290 1,680 .753 .78 93. 300 6,000 1,880 3,640 1.63 1.88 224,000 April ...... __ ...... 8,570 4,580 6,480 2.91 3.25 386,000 May...... 20,000 6,440 14,600 6.55 7.55 898, 000 21,700 7,810 14,800 6.64 7.41 881,000 July ...... 7,340 1,700 3,550 1.59 1.83 218,000 1,700 1,120 1,550 .695 .80 95,300 1,330 1,000 1,140 .511 ..57 67,800 21,700 940 4,490 2.01 27.35 3, 250, 000 NORTH FORK OF PAYETTE RIVER AT LARDO, IDAHO LOCATION. In sec. 8, T. 18 N., R. 3 E., a quarter of a mile below Lardo, Valley County, and outlet of Payette Lake. No tributaries enter between lake and gage. DRAINAGE AKEA. 131 square miles (measured on topographic and! Land Office maps). RECORDS AVAILABLE. September 1,1908, to June 30, 1917, and May 24, 1919, to September 30, 1921. GAGE. Inclined staff on left bank installed July 25, 1911; lead by \fernqn Land. Original temporary gage, used September 1 to October 8, 1908, was 1 mile below site of present gage; permanent vertical staff gage, used until July 25, 1911, was installed October 14,1908, on left bank 30 feet below present site. Gage datum unchanged since October 14, 1908. DISCHARGE MEASUREMENTS. Made from cable half a mile below gage, from high way bridge at Lardo, or by wading. CHANNEL AND CONTROL. Bed of stream and control composed of cobbles and gravel; slightly shifting. One channel at all stages. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 7.15 feet June 9 (discharge, 3,590 second-feet); minimum stage, 1.30 feet July 20 (discharge, 6 second-feet). 1908-1917; 1919-1921: Maximum stage recorded, 7.5 feet June 5,1909 (discharge, 4,250 second-feet): minimum discharge, 3 second-feet, October 21 and 22, 1911, and November 10-26, 1919. ICE.^Stage-discharge relation not affected by ice, presumably because of pfrox- imity of station to Payette Lake. DIVERSIONS. None above station. REGULATION. Flow during July, August, and Septe'mber, partly regulated by in stallation and later gradual removal of a temporary dam at outlet of Payette . Lake a quarter of a mile above. 23S SURFACE WATER SUPPLY, 1921, PAST XII B ACCUKACY. Stage-discharge relation not permanent. Two well-defined rating curves and curves parallel thereto used during the year. Gage read to half- tenths once daily. Gage-height record somewhat unreliable during winter and discarded entirely for period November 18 to December 4. Daily dis charge ascertained by applying daily gage height to rating table except as noted in footnote to daily discharge table. Daily discharge considered only fair chiefly because of possible inaccuracy of gage-height record; monthly summary good. Discharge measurements of North Fork of Payette River at Lardo, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by- height charge Feet Sec.-ft. Feet Sec.-ft. Dec. 5 F. M. Atkinson ___ .. 3.10 344 May 15 Berkeley Johnson.. __ 5. ,.3 1,970 Feb. 8 A. G. Fiedler. . 2.70 186 June 12 Paulsenand BJoyt.. _ 6.84 3,270 2.70 187 July 6 C.W. Kief ..._ . 3.84 694 9 ... .. do...... _ ... 2.70 187 31 .....do ...... 1.58 1(5.6 May 15 .....do...... 5.52 2,020 .....do . . ... 2.35 114 Daily discharge, in second-feet, of North Fork of Payette River at Lardo, Idaho, for the-year ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1. ______.. 28 136 217 160 148 160 409 2,700 1,070 11 104 2 28 136 217 160 136 160 432 2,800 966 Q 104 3... ___ ..... 36 136 > o*0 217 160 1.-5 160 454 2,900 896 11 126 4 _ . _ .... 36 136 I 217 160 114 160 478 2,990 794 11 114 5... _ . _ .... 44 136 325 217 187 114 160 502 3,190 729 13 114 6 ...... 44 136 325 217 187 '9595 160 580 3,290 667 11 114 7 _..-_.-..., 44 104 325 217 160 160 667 3,390 608 11 125 8... ___ -- _ 44 104 286 187 187 95 160 861 5,490 580 11 126 9.. __ . _ .... 44 104 286 187 179 65 187 1,070 3,590 553 138 125 10.. __ . _ .... 54 104 286 1-87 179 95 187 1,150 3,490 502 205 125 11... _ ...... 54 104 286 187 187 95 187 1,300 3,290 478 224 114 12... _ ...... 54 104 286 187 187 95 202 1,470 3,190 40 243 114 13.... _ ...... 95 104 286 160 187 95 202 1,550 %190 31 261 104 14..,. _____ . 114 286 160 187 95 202 1,800 2,900 24 264 104 15.... ___ 136 114 286 136 179 95 202 1,970 2,700 13 264 114 16.. __ ...... 136 114 286 136 179 95 217 2, 630 2, 420 13 528 114 17...... 148 148 250 136 174 104 217 3,290 2,060 11 553 114 18 . 136 250 136 160 104 217 3,390 1,880 9 528 126 19... _ ...... 136 250 136 148 104 234 3,290 1,800 8 478 114 20...... 136 185 250 136 148 104 268 2,800 1,720 6 478 104 21_. ..__.. ___._. 136 187 136 148 104 286 2,520 1,550 9 388 104 22...... _ . ... 136 187 136 148 104 366 2,520 1,380 11 306 95 23...... 136 187 136 148 104 454 2,420 1,470 13 234 86 24...... 136 187 148 104 454 2,700 1,550 13 148 f8 25...... 136 187 136 148 104 454 2,900 1,550 13 136 78 26..^ " 136 217 136 148 104 454 3,190 1,380 13 136 78 27..... __ .... 136 217 136 148 125 454 3,190 1,380 13 125 70 28. .. 136 325 217 136 148 125 454 3,090 1,300 14 125 71 29.. ____ .. ... 136 917 1 Ifi 432 2,990 1,230 14 125 71 30. - 136 91 7 160 148 409 2,700 1,150 14 104 KQ 31...... 136 21? 160 160 2,520 17 104 NOTE. Braced figures show mean discharge ei timatea by comparison with records at station on North Fork of Payette River at Van Wyck. Shifting-control methods used Aug. 9-15. Discharge interpolated May 16 and June 8. TRIBUTARY BASINS 239 Monthly discharge of North Fork of Payette River at Lardo, Idaho, for the year ending Sept. 30, 1921 [Drainage area, 131 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile 148 28 98.2 0.750 0.86 6,040 104 198 1.51 1.68 11, 800 December. ______187 261 1.99 2.29 16, 000 217 .136 166 1.27 1.46 10,200 187 148 166 1.27 1.32 9,220 160 95 110 .840 .97 6,780 April - ..-___...... _.__._ 454 160 267 2.04 2.28 15,930 3,390 409 1,960 15.0 17.29 121 000 June ______. ______3,590 1,150 2,360 18.0 20.08 140 000 July...... 1,070 6 263 2.01 2.32 16 200 553 9 199 1.52 1.75 12 230 September ______125 58 103 .786 .88 6,130 3,590 6 514 3.92 53.18 371,030 NORTH FORK OF PAYETTE RIVER AT VAN WYOK, IDAHO LOCATION. In sec. 26, T. 14 N., R. 3 E., at highway bridge half a mile north of Van Wyck, Valley County, and 2 miles northwest of Cascade. Willow Creek, a small stream, enters from south half a mile below. DRAINAGE AREA. 586 square miles (measured on topographic and Land Office maps). RECORDS AVAILABLE. January 1, 1912, to June 30, 1916; June 9, 1920, to Sep tember 30, 1921. Gage heights January 1 to August 7, 1912, were derived from private records from comparative gage readings; daily discharge not determined prior to June 20, 1912. Several discharge measurements made during 1919 and spring of 1920. GAGE. Vertical staff spiked to downstream side of second bridge pier from right end of bridge; read by Udell Witchey October 1 to December 6, and L. S. Kimball April 7 to Septembei 30. Gage used August 8, 1912, to May 4, 1913, was a vertical staff at same location, reading 0.6 foot higher than present gage. DISCHARGE MEASUREMENTS. Made from bridge or by wading. CHANNEL AND CONTROL. Bed composed of rock overlain by sand and gravel; control somewhat shifting. EXTREMES OP DISCHARGE. Maximum stage recorded during the period, 8.6 feet May 20 (discharge, 8,700 second-feet); minimum stage, 1.6 feet August 8 (discharge, 171 second-feet). 1912-1916; 1920-1921: Maximum discharge that of May 20, 1921; mini mum stage, 1.70 feet August 20 and 21, 1920 (discharge, 128 second-feet). ICE. Stage-discharge relation probably seriously affected by ice. DIVERSIONS. Practically no diversions are made from main stream above station, but numerous diversions for irrigation are made from tributaries. REGULATION. Flow during July, August, and September partly regulated by in stallation and later gradual removal of a temporary dam at outlet of Pay ette Lake 30 miles above. ACCURACY. Stage-discharge relation changed during high water of May 18. Two rating curves used one applicable October 1 to May 17, is fairly well defined between 140 and 4,300 second-feet and an extension above; the other, applicable May 21 to September 30, is fairly well defined between 190 and 7,500 second-feet. Gage read to quarter-tenths once daily. Daily dis charge ascertained by applying daily gage height to rating table except as noted in footnote to daily discharge table. Records fair. 240 SURFACE WATER SUPPLY, 1921, PAST XII B Discharge measurements of North Fork of Payette River at Van Wyck, Idaho, during- the year ending Sept. 80,1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-Jt. Feet Sec.-ft. Dec. 4 F. M. A tkinson ..__' 2.95 779 7.97 7,540- 3.40 1,080 C. W.Kief ...... 3.84 1,440- May 17 ..do. . - __ 7.15 c oqn A nor 9 .... .do...... 1.68 203- do. .... 7.21 Sept. 10 do ...... 1.87 260' Daily discharge, in second-feet, of North Fork of Payette River at Van Wyck. Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Apr. May June July Aug. Sept. l - ._.___ . 182 812 2,070 6,080 2,130 202 21&; 2... ___ . 202 812 2,070 6, 260 2,020 196 209 3. __ ...... 224 812 2,180 6,260 1,920 186 209- 4 .. ___ ..... ______.. ... 245 812 1,050 2,300 6,450 1,740 186 202 5...... __ ...... CIO 2,300 6,640 1,560 186 209* 6...... 812 2,420 6,830 1,460 177 219- 7 .-....-...... 1,080 2,540 7.030 1,340 177 219 8 ' 1,080 2,780 7, 430 1,260 171 229 9... ___ .... _____ ...... 280 1,080 3,040 7,640 1,200 186 236- 10...... 1,220 3,300 7,850 1,130 202 251 11 ...... _ 1,370 3,710 7,430 991 236 274 12...... 1,680 4,000 7,230 991 274 255 13...... _ ...... AAQ 2,300 4,150 6,640 858 316 255- 14 ... ___ ..... ____ ... _ . 317 2,660 4,450 6,640 732 316 247 15 - _ 448 317 2,910 4,750 6,450 644 316 240 16...... 448 317 2,910 4,900 5,900 507 338 236- 17 ...... _____ ...... AAQ 598 2,660 5, 710 5, 210 456 360 23£ 18 ...... 878 2,300 6,760 4.570 407 360 233- 19...... _ ...... 1,080 2,540 7,700 3,970 360 338 229 20 ...... 1,520 2,780 8,700 3,820 338 360 233- 21...... 1,370 2,780 8,500 3,260 316 360 236 22 ...... __ ...... 1,290 2,910 7,380 2,860 316 338 274 23 ...... 1,220 2,910 6,260 2,990 295 316 316 24 .. __ .. __ . _____ , __ . \ 400 1,150 2,180 6,260 3,120 255 295 274 25 ... _ . __ . _ ...... 2, 020 6,640 2 9°0 236 274 255 26...... i.... 1,150 1,860 6,830 2,730 236 256 247 27...... 1,220 1,770 7,030 2,600 219 244 236 28.. ___ ...... __ ...... 1,150 1,680 7,230 2,480 219 236 236- 29...... 1,080 1,860 7,030 2,600 219 229 236 30 .... _ .. _____ ...... 1,080 1,960 6.640 2,360 219 219 233 31...... 6,080 202 219 NOTE. Braced figures show mean discharge estimated by comparison with other stations in same- drainage basin. Shifting-control method used May 18-20. Discharge interpolated Nov. 17, 22, 23, 26, 28, Dec. 3, Apr. 25, May 22, and July 4. No record obtained Nov. 1-13 and Dec. 7 to Mar. 31. Monthly discharge of North Fork of Payette River at Van Wyck, Idaho, for the year ending Sept. 80, 1921 [Drainage area, 586 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile October... ______...... 448 182 353 0.602 0.69 21,700 November 14-30...... 1,520 317 989 1.69 1.07 33.300- December 1-6. __ _ . . 812 812 812 1.39 .31 9,660 April ______...... 2,910 1,890 3.23 3.60 112,000 8,700 2,070 5,020 8.57 9.88 309,000 June.. ____ .. _ . 7,850 2,360 5,140 8.77 9.78 306,000 July...... 2,130 202 800 1.37 1.58 49,200 360 171 260 .444 .51 16,000 September ______316 202 239 .408 .46 14,200 NOTE. See footnote to table of dally discharge. TRIBUTARY BASINS 241 GOLD FORK OF PAYETTE RIVER NEAR ROSEBERRY, IDAHO LOCATION. In SE. }£ sec. 29, T. 16 N., R. 4 E., at bridge on J. T. Suit's ranch, 1 mile below dam of the Gold Fork Irrigation Co., IJ^ miles below mouth of Flat Creek, 6 miles above mouth of Gold Fork, and 5 miles southeast of Roseberry, Valley County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. August 25, 1920, to September 11, 1921, when records were discontinued. GAGE. Vertical staff spiked to downstream end of left abutment of highway bridge; read by Ed. C. Martin and J. T. Suit. DISCHARGE MEASUREMENTS. Made from single span bridge or by wading. CHANNEL AND CONTROL. Bed composed of gravel and cobbles. One channel at all stages. Control formed by a well-defined gravel riffle; fairly permanent. Point of zero flow at gage height 0.35 foot ± 0.10 foot, as determined August 25, 1920. EXTREMES OP DISCHARGE. Maximum stage recorded during the period October 1 to September 11, 5.50 feet May 20 (discharge, 2,260 second-feet); minimum stage 1.12 feet October 25 (discharge, 53 second-feet). 1920-1921: Maximum stage recorded that of May 20, 1921; minimum stage, 1.06 feet August 25,26, Septembers, 1920 (discharge, 45 second-feet). ICE. Stage-discharge relation seriously affected by ice. DIVERSIONS. The Gold Fork Irrigation Co. diverts water at a concrete dam about 1 mile above the gage. Prior to 1921 water was diverted at a timber dam about one-eighth mile downstream from present dam. Canal has a capacity of about 25 second-feet. REGULATION. None except that due to diversions. ACCURACY. Stage-discharge relation changed during later part of summer, affected by ice December 6 to March 12. Rating curve, which is well defined between 39 and 1,800 second-feet, used during the year. Gage read to hundredths once daily. Gage-height record satisfactory except for breaks in record. Daily discharge ascertained by applying daily gage height to rating table; shifting-control method used August 16 to September 11. Records good except for winter months for which they are fair. Discharge measurements of Gold Fork of Payette River near Roseberry, Idaho, during the period Oct. 1, 1920, to Sept. 11, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Dec. 6 P. M. Atkinson ...... 1.82 "79.0 4.47 1,430 Feb. 9 A. G. Fiedler __ ...... Z65 "67.2 July 7 0. W. Kief ._. .. 2.08 282 Apr. 8 1.70 178 .....do . ____ .... __ 1.80 81.4 May 16 4.65 1,560 Sept. 11 _ do . ______. 1.22 63.9 16 ..do...... 4.74 1,680 0 Stage-discharge relation affected by ice. NOTE. Measured flow in canal of Gold Fork Irrigation Co., 18.1 second-feet on July 7, and 18.2 second-feet on Aug. 1. 242 SURFACE WATER SUPFLY, 1921, PART XII B Daily discharge, in second-feet, of Gold Fork of Payette River near Roseberry, Idaho , for the period Oct. 1, 1920, to Sept. 11, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1. __ . __ .... 71 97 147 322 394 79 56 2 ______74 101 152 357 413 78 57 3. ___ . __ .. 81 QE 82 I 100 217 376 357 103 67 4. ____ ...... 74 QC 217 432 376 89 66 5. ___ . __ .. 67 83 68 234 432 376 79 63 6. ___ .. __ .. 74 Q1 79 258 512 357 78 60 7. ____ .. _ . 93 152 690 306 76 60 8. _ .... __ .. 89 189 735 306 74 60 9..... _ - .... 81 67 200 74 60 10. _ . _ ...... 104 217 835 243. 71 60 11 . 128 222 229 69 64 12 ______... 11Q h 234 935 1,450 215 66 13...... __ .. . 114 114 240 935 1,670 200 66 14...... _ ... 101 114 322 QOC 85 15.... _ .... 89 119 322 QQC 1,390 173 74 16. _ . _ ...... 93 70 119 1 PlQfl 990 91 17 __ ... __ 101 123 289 1,520 835 147 74 18. _ ...... 112 147 258 1,450 735 142 69 1Q 76 75 147 246 1,760 785 142 67 20 __ . __ . .... 114 147 322 2,260 835 128 64 21 .. . 152 322 1,520 835 123 66 22...... 99 152 340 1,520 835 119 64 23... ___ .. _ . no 157 357 1,520 835 112 63 24...... 101 152 340 835 106 61 25..... __ . .... 53 157 322 101 61 26 __ . __ -. ... 56 163 322 735 99 60 27...... 71 163 289 645 91 61 28...... _ ... 71 147 306 555 91 60 29 ...... 71 142 322 534 89 60 30. _ .. _ .. ... 71 137 322 459 85 58 31. _ .. __ . ... Q1 137 81 57 NOTE. Braced figures show estimated mean discharge for periods indicated. Stage-discharge rela tion affected by ice Dec. 6 to Mar. 12; discharge estimated from two discharge measurements, and study of observer's notes and weather records. No record Nov. 7-30 and May 24 to June 11. Discharge inter polated Oct. 10, 18, 20, 22, 28, July 10-13, 24, and Sept. 5. Monthly discharge of Gold Fork of Payette River near Roseberry, Idaho, for the period Oct. 1, 1920, to Sept. 11, 1921 Discharge in second-feet Run-off Month in acre-feet Maximum Minimum Mean 128 53 89,8 5,520 101 83 93.7 ' 1,120 77.1 4,740 70.0 4,300 72.6 4,030 163 128 7,870 357 147 266 15,800 May 1-23. _ ...... ___ . _ . _ . ______. __ ... 2,260 322 1,010 46,100 June 12-30 .. ______.. 1,610 452 912 34,400 413 81 200 12,300 103 57 70.9 4,360 September l-ll ______...... 67 56 61.2 1,340 NOTE. See footnote to table of daily discharge TRIBUTARY BASINS 243 SOUTH FORK OF PAYETTE RIVER NEAR GARDEN VALLEY, IDAHO LOCATION. In sec. 1, T. 8 N., R. 4 E., at Garden Valley ranger station, 300 feet above mouth of Station Creek, half a mile above mouth of Wash Creek, 1*4 miles above mouth of Alder Creek, 4% miles above mouth of Middle Fork of Payette River, and 5 miles southeast of Garden Valley, Boise County. DRAINAGE AREA. 779 square miles (measured on topographic maps). RECORDS AVAILABLE. May 15 to September 30, 1921. GAGE. Vertical staff on right bank immediately to rear of ranger station; read by F. H. Miller. Prior to July 14, 1921, gage read 1.47 feet lower than at present. All readings corrected to datum used after July 14, 1921. DISCHARGE MEASUREMENTS. Made from cable located 30 feet above gage or by wading. CHANNEL AND CONTROL. Bed composed of rock overlain with cobbles and gravel. Control formed by well-defined riffle; permanent. One channel at all stages. EXTREMES OF DISCHARGE. Maximum stage recorded during period May 15 to September 30, 6.87 feet June 9 (discharge, 9,330 second-feet); minimum stage, 0.90 foot September 4 (discharge, 585 second-feet). ICE. No record. DIVERSIONS. None, except a few small ranch diversions for irrigation from tributaries above. REGULATION. None. ACCURACY. Stage-discharge relation permanent. Rating curve defined by measurements made in 1921 and 1922 and is well defined between 450 and 6,000 second-feet. Gage read to hundredths once daily. Daily discharge ascertained by applying daily gage height to rating table. Records good. COOPERATION. Gage-height record furnished by United States Forest Service. Discharge measurements of South Fork of Payette River near Garden Valley, Idaho> during the period May 15 to Sept. 30, 1921 fMadeby C. W. Kief] Gage Dis Gage Dis Date height charge Date height charge Feet Sec.-ft. Feet Sec.-ft. July 14 ...... 2.31 1,840 1.57 1,130 15... _ ...... 2.26 1,780 22. _ ...... _ ...... 1.11 726 23 __ . _____ ...... 1.81 1,370 Sept. 9 ______.99 622 Daily discharge, in second-feet, of South Fork of Payette River near Garden Valley, Idaho, for the period May 15 to Sept. SO, 1921 Day May June July Aug. Sept. Day May June July Aug. Sept. 1 ______7,350 3,490 ' 1,050 618 16. _____ .. 6,810 6,630 1,630 875 650 2. ____ . _ 7,170 3,330 1,050 618 17 ...... 7,530 5,440 1,630 835 650 3 __ ...... 7,530 3,030 1,100 618 18. _ ...... 7,350 4,610 1,630 758 650 4 ...... 7,530 2,740 1,050 585 19. _ . _ . ... 7,350 4,770 1,530 795 685 5...... 7,710. 2,460 960 .618 20. _ ...... 6,460 4,610 1,530 758 685 6. _ ...... 8,250 2,460 960 618 21 _____ .... 6,120 4,450 1,430 758 685 7 ...... 8,430 2,460 960 650 22 ...... 5,780 4,770 1,430 720 720 8...... 8,790 2,460 918 650 23...... 5,780 4,930 1,340 720 720 9 ...... 9,330 2,330 918 650 24...... 6,120 5,100 1,340 720 685 10 _ ...... 8,970 2,330 875 650 25.. _____ .. 6,810 5,100 1,340 720 685 11 .__.....__._ 8,970 2,200 875 650 26 __ . _ .... 7,530 5,100 1,240 720 685 12 __ ...... 9,150 2,200 875 618 27 ____ . .... 8,070 4,610 1,240 720 650 13...... 8,790 1,950 875 650 28- ...... 7,350 4,450 1,140 650 650 14 _____ ... 8,430 1,840 875 650 29 _____ . ... 7,710 4,130 1,140 650 650 15...... 5,950 6,810 1,730 875 650 30...... 6,630 3,810 1,100 650 650 01 6,460 1,050 650 2,44 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of South Fork of Payette River near Garden Valley, Idaho, for the period May 15 to Sept. 30,1921 [Drainage area, 779 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile May 15-31. _ ...... _ ... _ 8,070 5,780 6,810 8.74 5.53 230,000 June ______9,330 3,810 6,520 8.37 9.34 388,000 July...... 3,490 1,050 1,900 2.44 2.81 117,000 August ______. ______1,100 650 836 1.07 1.23 51,400 720 585 653 .838 .94 38,900 I 825, 000 SOUTH FORK OF PAYETTE RIVER NEAR BANKS, IDAHO LOCATION. In sec. 28, T. 9 N., K. 3 E., 1 mile above junction with North Fork of Payette River and lJ/£ miles northeast of Banks, Boise County. DRAINAGE AREA. 1,200 square miles (measured on topographic maps). RECORDS AVAILABLE. August 19 to September 30, 1921. GAGE. Vertical staff bolted to large boulder on right bank; read by E. L. Webb. DISCHARGE MEASUREMENTS. Made from cable located 20 feet below gage. CHANNEL AND CONTROL. Bed composed of rock, boulders, and sand. Banks steep. One channel at all stages. Control formed by well-defined rock and boulder riffle, 250 feet below gage; permanent. EXTREMES OF DISCHARGE. Maximum stage recorded during period August 19 , to September 30, 1.44 feet September 20 (discharge, 1,040 second-feet); minimum stage, 0.92 foot September 29 (discharge, 695 second-feet). ICE. No record. DIVERSIONS. None, except a few small ranch diversions from tributaries in drainage above gage. REGULATION. None. ACCURACY. Stage-discharge relation permanent. Rating curve which is well defined between 600 and 8,000 second-feet based on measurements made during 1921 and 1922. Gage read to hundredths once daily except Sundays. Daily discharge ascertained by applying daily gage height to rating table and interpolating for days of no record. Records good. Discharge measurements of South Fork of Payette River near Banks, Idaho, during the period Aug. 19 to Sept. 30, 1921 [Made by C. W. Kief] Gage Dis Date height charge Feet Sec.-ft. Aug. 20 ______. ____ . ______1.24 923 Sept. 9 ______1.03 774 TRIBUTARY BASINS 245 Daily discharge, in second-feet, of South Fork of Payette River near Banks, Idaho, for the period Aug. 19 to Sept. 30, 1921 Day Aug. Sept. Day Aug. Sept. Day Aug. Sept. 1 __ . ___ 760 11... _ . _ . ... 776 21... __ ...... 895 895 2 ______.. 760 12...... 760 22... __ ...... 895 895 S. _ . ____ - 825 13-. __ . _ . ... 760 23.. .. ___ . 860 825 4 ____ ...... 825 14...... 792 24.. ______. 860 825 5. ___ ...... 825 15- __ . _ . ... 760 25...... 860 792 6. ___ . _ .... 792 16...... 792 26. ___ ...... 825 760 7 . _ .. 792 17- __ . __ ... 760 27-...... 825 760 8 ______. 760 18...... 862 28- _ ...... 825 760 9 __ ., _ ..... 792 19...... 965 965 29- __ ..... _ . 825 695 10. __ ...... 7QO 20-.... __ .. ... 895 1,040 30- .. 792 728 31 792 NOTE. Discharge interpolated Aug. 21, 28, Sept. 4,11,18, and 25. Monthly discharge of South Fork of Payette River near Banks, Idaho, for the period Aug. 19 to Sept. 30, 1921 [Drainage area, 1,200 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile August 19-31.. __ ... ____ . .... 965 792 855 0.712 0.34 22,000 September.. ______1,040 695 804 .670 .75 47,800 The period __ ...... 69,800 DEADWOOD RIVER NEAR LOWMAN, IDAHO LOCATION. In sec. 29, T. 9 N., R. 7 E., 600 feet above bridge on Garden Val- ley-Lowman highway, 700 feet above confluence, of Deadwood River with South Fork of Payette River, and 2J^ miles west of Lowman, Boise County. DRAINAGE AREA. 217 square miles (measured on topographic maps). RECORDS AVAILABLE. August 11 to September 30, 1921. GAGE. Stevens continuous water-stage recorder on left bank; inspected by W. C. Taylor. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Bed composed of gravel and boulders; permanent. Banks fairly low but not subject to overflow; gradient steep. Control fairly well defined, wide and not sensitive. EXTREMES OF DISCHARGE. Maximum stage recorded during period August 11 to September 30 1.83 feet August 14 (discharge, 244 second-feet). As indi cated in list of discharge measurements, the measurement made July 21 before station was established and later referred to gage datum, shows a higher stage and discharge. Minimum stage recorded, 1.52 feet September 3-7 (dis charge, 161 second-feet). ICE. None during period of record. DIVERSIONS. None. REGULATION. None. ACCURACY. Stage discharge relation permanent. Rating curve fairly well defined below 2,400 second-feet. Operation of water-stage recorder satisfactory except as indicated in footnote to table of daily discharge. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspection of recorder graph. Records fair except for period when water- stage recorder was not operating. COOPERATION. Services of observer furnished by United States Forest Service. 246 SURFACE WATER. SUPPLY, 1921, PART XII B Discharge measurements of Deadwood River near Lowman, Idaho, during the period July M to Sept. 30, 1921 Date Gage Made by height Discharge Feet Sec.-ft. July 21 Paulsen and Kief. ______2.09 361 Aug. 11 C. W. Kief ..-...... _..._ . _._....___.._. ._ ...... _...-...-...... 1.78 22» Sept. 8 -do...... 1.54 204 Daily discharge, in second-feet, of Deadwood River near Lowman, Idaho, for the period Aug. 11 to Sept. 30, 1921 Day July Aug. Sept. Day July Aug. Sept. Day July Aug. Sept. I 163 11...... 225 21...... 341 202 2..... _ _ 163 12...... 217 22...... 200 161 13...... 220 23...... 192 4 161 14...... 244 24...... 189 5 161 15...... 241 165 25...... 184 170 6...... 161 16 __ ..... 237 26...... 179 7...... 161 17...... 222 27...... 179 8..- - 18...... 214 28...... 177 9 ...... 19...... 211 170 29...... 172 10 ..____ 20. _ ..... 208 170 30...... 165 31...... NOTE. Braced figures show estimated mean discharge for periods indicated, based on flow of South. Fork of Payette River near Garden Valley. Monthly discharge of Deadwood River near, Lowman, Idaho, for the period Aug. 11 to Sept. 30, 1921 [Drainage area, 217 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile August 11-31.-31...... 244 165 202 0.931 0.73 8,410 September. 161 166 .765 .85 9,881 WEISER RIVER ABOVE CRANE CREEK, NEAR WEISER, IDAHO LOCATION. In sec. 10, T. 11 N., R. 4 W., at Purcell ranch, 1 mile above mouth of Crane Creek and 12 miles northeast of Weiser, Washington County. DRAINAGE AREA. 1,160 square miles (measured on Forest Service, topographic, and United States Geological Survey State maps). RECORDS AVAILABLE. July 15, 1920, to September 30, 1921. GAGE. Friez water-stage recorder in concrete shelter on left bank, a quarter of a mile from ranch house on Purcell ranch; inspected by L. O. and Enna L. Van Leuven. DISCHARGE MEASUREMENTS. Made from cable 200 feet above gage or by wading. CHANNEL AND CONTROL. Bed composed of sand and gravel. Control which is fairly permanent is formed by a well defined gravel and boulder riffle 200 feet below gage. One channel at all stages. EXTREMES OP DISCHARGE. Maximum stage during the period February 22 to September 30, from water-stage recorder, 7.83 feet at 9 a. m. March 18 (discharge, about 7,550 second-feet); minimum stage, 1.20 feet at 5 p. m. August 11 (discharge, 56 second-feet). 1920-1921: Maximum stage recorded that of March 18, 1921; minimum stage, 0.83 foot August 11, 12, 1920 (discharge, 11 second-feet). TRIBUTARY BASINS 247 ICE". No record. , DIVERSIONS. Numerous diversions for irrigation above. REGULATION. None except that due to diversions. ACCURACY. Stage-discharge relation practically permanent. Rating curve is well defined between 70 and 6,000 second-feet. Daily discharge ascer tained by applying to rating table mean daily gage height obtained by inspection of recorder graph. Records good for discharges up to 6,000 second-feet; above this point fair. COOPERATION. Services of observer paid by Weiser Irrigation District. Discharge measurements of Weiser River above Crane Creek, near Weiser, Idaho, during the year ending Sept. 30, 1921 Gage Dis »Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Vov. 26 3.33 1,290 May 23 6.90 5,930 Feb. 22 L. L. Bryan ______3.08 972 27 .....do...... 6.32 5,320 Mar. 21 Fiedler and Johnson 5.74 4,270 July 2 Kief and Galloway « . .. 2.71 669 28 4.66 2,600 25 1.30 75 Apr. 27 4.18 2,140 Aug. 27 C.W. Kief ...... 1.36 86 May 3 .....do...... 4.54 2,600 Sept. 15 .....do...... 1.49 131 "Galloway and Northrop associated with Stuart M. French, engineer of Weiser, Idaho. Daily discharge, in second-feet, of Weiser River above Crane Creek, near Weiser, Idaho, for the period Feb. 22 to Sept. 80, 1921 Day Feb. Mar. Apr. May June July Aug. Sept. i. ______.. __ ...... 1,280 2,610 2.200 3,620 7Qft 92 69 2.... ___ .. ____ ...... ____ . 1,810 2,800 2,310 3,470 719 S9 67 3.... ____ . ____ .. _ ..... __ . 2,550 3,190 2,560 3,400 661 82 67 4.... ____ . ___ .... ______. _ . 3,400 3,060 2,550 3,400 ' 605 87 80 5.... ___ ...... __ ... __ ...... 3,990 2,550 2,740 3,470 546 82 97 '99 6..,. __ ...... ____ .... __ . .... 4,140 2,200 2,860 3,470 497 77 7..... ______... ______..... 3,840 1,980 3,190 3,400 446 80 99 8 3,690 1,810 3,540 3,540 404 82 97 9.... _ . _ . _ ...... _ ...... 3,840 1,810 3,690 3,540 352 82 94 10...... :. ... _ . _ ... __ . ... 3,840 1,920 3,690 3,260 322 73 94 11 ______. ____ ...... 3,990 2,140 3.620 3,060 301 69 97 12 ____ . ____ . __ . _ . ______. 3,690 2,490 3,690 2,860 296 67 104 13...... __.._._._. 4,296 3,360 3,620 2,740 273 67 112 14. ______. _____ ..... 5,400 4,290 3,760 2,580 288 71 128 15 ______. ______.. ... 4,600 3,760 3,990 2,370 232 77 125 16..... _ .... __ ..... __ ...... 6,200 3/060 4,760 2,300 218 94 125 17...... 6,200 2,610 5,240 2,030 209 112 115 18--..-...... ___ . 6,700 2,610 5,080 1,860 183 109 142 19.... ______. ___ ..... _ . _ . 6,700 2,860 5.080 1,760 171 107 165 2) 5,240 3,190 5,980 1,700 147 104 232 31.1 ______...... _ .... 4,440 3,260 6, 870 1,550 136 102 229 22.... _____ . ______. ____ . _ . 987 4,140 3,120' 6,360 1,500 122 99 215 23 __ . ______...... ___ . _ . 1, 010» 3,760 3,060 5,880 1,440 99 97 205 24 __ ...... _ .... _ . ____ . 978 4,290 2,990 5,400 1,400 82 92 199 25.... __ . _ . ____ ...... __ .. 978 3,690 2,670 5,240 1,300 75 87 196 26.. _____ ..... ___ . _____ . .... 1,016 3,060 2,370 5,240 1,180 80 94 193 27.... ___ .... ____ .... _ ...... 1,030 2,860 2,140 4,920 1,040 97 89 193 28 _ . ____ . _____ ...... 1,100 2,740 2,030 4,440 960 104 89 196 29 ______. _____ ...... 2,610 2,030 3,990 906 102 85 193 30... ______...... ____ . 2,610 2,200 3,840 847 102 80 196 31 _____ . ___ . __ .. __ ...... 2,550 3,760 99 75 Discharge interpolated May 20, June 16 and 17. 248 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of Weiser River above Crane Creek, near Weiser, Idaho, for the period Feb. 22 to Sept. 30, 1921 Discharge in second-feet Month Maximum Minimum JyieaaM |i Run-offacre-feet in February 22-28 ______. ______1,100 978 1,010 14, .000 March ____ . ______...... ___ .. ____ 6,700 1,280 3,940 242,000 April...... 4,290 1,810 2,670 159,000 May.... _ ...... _ .... . __ .. . _ . ... . _ 6,870 2,200 4,200 258,000 3,620 847 2,330 139. 000 July _ .._...... ______.._.._._.._..___._.__....__. 798 75 282 17,300 112 67 86.8 5,340 232 67 141 8,390 843,000 WEST FORK OF WEISER RIVER NEAR FRTJITVALE, IDAHO LOCATION. In NW. ^ sec. 9, T. 17 N., R. 1 W., at Caseman ranch, 1J4 miles northwest of Fruit vale post office, Adams County, and 1% miles above junction of West Fork with Weiser River. DRAINAGE AREA. 65 square miles (measured on Forest Service map). RECORDS AVAILABLE. October 5, 1910, to January 31, 1913, and October 1, 1919, to September 30, 1921. GAGE. Vertical staff on left bank; read by R. H. Caseman. Gage was raised about 2.00 feet August 8, 1920; records prior to October 1, 1920, based on former datum. DISCHARGE MEASUREMENTS. Made from highway bridge one-half mile below gage or by wading. CHANNEL AND CONTROL. Bed composed of sand and coarse gravel. Banks covered with brush; left bank not likely to be overflowed, right bank subject to overflow at extreme high 'stages. Control formed by poorly defined gravel riffle and by log embedded in stream bed below gage; control affected at times by debris. EXTREMES OF DISCHARGE. Maximum discharge recorded during year, 687 second-feet April 13 and May 18-23; minimum stage, 0.44 foot July 19-22 (discharge, 6.9 second-feet.) 1910-1913; 1919-1921: Maximum discharge recorded that of April 18 awd May 18-23, 1921; minimum discharge, 0.5 second-foot July 23-27, 1911. ICE. Stage-discharge relation affected by ice. DIVERSIONS. Several small ditches divert above and below station. REGULATION. Flow regulated by headgates at Lost Creek reservoir 12 miles above. Headgates changed usually at infrequent intervals. ACCURACY. Stage-discharge relation affected by varying quantities of brush and debris on control and 'by ice during parts of December, January, and February. Rating curve which is fairly well defined between 3 and 360 second-feet and several curves parallel thereto used during the year. Gage read to hundredths once daily. Daily discharge ascertained by applying daily gage height to rating table, except for periods of shifting control and estimates as noted in footnote to table of daily discharge. Records good for discharge up to 400 second-feet; others fair. TRIBUTARY BASINS 249 Discharge measurements of West Fork of Weiser River near Fruitvale, Idaho, during the year ending Sept, SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 19 F. M. Atkinson __ .... 2.35 . 187 July 5 C.W. Kief ...... 0.67 20.0 Feb. 21 L. L. Bryan ... __ __ 1.40 "71.9 29 ...... do ...... 1.20 59.2 Mar. 22 2.25 193 Aug. 26 .....do...... 1.11 48.6 Apr. 30 __ do- ...... 2.89 342 .....do...... 1.10 48. 4 May 26 .....do ...... 3.80 494 <* Stage-discharge relation affected by ice. Daily discharge, in second-feet, of West Fork of Weiser River near Fruitvale, Idaho, for the year ending Sept. SO, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 _____ 14 9.5 55 116 67 71 278 343 343 24 46 46 2 ___ .... _ . 13 9.5 56 99 61 82 343 428 330 23 42 47 3.. ____ . ____ 14 20 55 99 64 110 488 458 316 23 44 48 4. _ . _ ...... 13 13 55 94 61 185 371 488 278 20 42 48 5 ___ 12 14 50 104 59 203 278 519 255 20 39 48 6. ___ .... ___ 12 14 58 99 53 223 223 551 244 19 38 48 7 ____ ...... 17 19 80 82 218 185 618 223 19 36 48 8. ____ .. __ 19 18 55 84 1 UW" 213 168 652 213 18 36 48 » .-...... 15 17 48 78 203 176 618 184 17 35 48 10 __ ...... 14 15 48 . 76 55 203 223 618 176 16 35 48 11 _ ...... 15 8.4 185 56 223 357 652 160 14 35 48 12______.__..__ 17 17 58 59 203 428 584 144 14 35 48 13...... 26 20 58 61 203 687 584 130 14 35 48 14 ___ ...... 21 17 63 68 76 234 584 584 116 13 50 48 15 ___ ...... 30 17 69 194 428 584 104 13 52 32 1> 65DO 16...... __ 26 17 66 61 185 316 652 99 12 53 04> 17...... 20 41 84 66 59 203 278 652 116 12 52 99 18.-._...... ____ 22 67 94 144 234 332 687 104 9 52 99 19 __ ...... 29 144 88 168 255 428 687 94 6.9 52 104 20...... 26 119 63 123 223 488 687 87 6.9 52 99 65 21. __ ...... 21 94 55 203 488 687 79 6.9 50 99 22...... 19 82 63 194 428 687 72 6.9 50 94 23 ___ ..... ___ 19 73 59 75 203 488 687 67 12 50 ' 94 24...... 16 66 55 67' 234' 428 652 62 32 48 88 25..... _ .. _ . 17 63 53 66 244 371 618 28 51 48 88 26. _ . _ ...... 17 66 61 78 67 213 930 488 26 51 48 86 27...... 17 80 53 78 66 185 290 488 24 52 48 \ 88 28. ___ ...... 18 66 52 76 67 176 290 428 24 51 48 88 29 ____ ... __ 23 58 52 73 ,203 .290 399 23 59 47 94 30...... 21 56 80 223 343 371 24 51 46 88 31.. __ ...... 19 152 88 244 357 49 46 NOTE. Braced figures show mean discharge for periods indicated, estimated because stage-discharg e relation was affected by ice. Shifting-control method used Nov. 16-18, May 2-11, May 30 to June 3, and Aug. 1-6. Discharge interpolated Nov. 20, Dec. 3, Mar. 7, and July 24. 250 SURFACE WATER SUPPLY, 1921, PAET XII B Monthly discharge of West Fork of Weiser River near Fruitoale, Idaho, for the year ending Sept. 30, 1921 [Drainage area, 65 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile 30 12 18.8 0.289 0.33 l,16i 144 8.4 44.0 .677 .76 2,620 203 48 72.3 1.11 1.28 4,450 168 86.6 1.33 1.53 5,320 76 61.9 .952 .99 3,440 255 71 200 3.08 3.55 12,300 687 168 360 5.54 6.18 21,400 687 343 565 8.69 10.0 34,700 343 23 138 2.12 2.36 8,210 July.... ______.. . 59 6.9 23.7 .335 .42 1,460 53 35 44.8 .689 .79 2,750 104 32 70.1 1.08 1.20 4,170 687 6.9 141 2.17 29.39 102,000 LOST CREEK NEAR TAMARACK, IDAHO LOCATION. In sec. 28, T. 19 N., R. 1 W., a,quarter of a mile below dam of Lost Valley reservoir, 6 miles southwest of Tamarack, Adams County, and 20 miles north of Council. DRAINAGE ABBA. 30 square miles (furnished by Weiser Valley Land & Water Co.). RECORDS AVAILABLE. May 21, 1920, to September 30, 1921. Fragmentary records from January 1, 1910, to August 21, 1914. GAGE. Stevens continuous water-stage recorder installed on right bank May 21, 1920, referred to new vertical inside staff gage; inspected by A. F. Galloway A Barrett and Lawrence water-stage recorder at same site was used 1912- 1914. Vertical staff on left bank during 1911. All gages at practically same datum. DISCHARGE MEASUREMENTS. Made from footbridge near gage or by wading. CHANNEL AND CONTROL. Bed composed of gravel, cobbles, and boulders; very rough. One channel at all stages. Control formed by well-defined rock riffle about 20 feet below gage. EXTREMES OF DISCHARGE. Maximum stage during the period ending Septem ber 30, 1921, from water-stage recorder, 4.29 feet 9 p. m. May 17 to 8 a. m. May 18 (discharge, 688 seeond-feet); minimum stage, 1.08 feet November 25, 27, and 29 (discharge, 6.5 second-feet). 1920-1921: Maximum stage recorded that of May 17 and 18, 1921; mini mum stage, 0.60 foot at 9.50 p. m. August 11, 1920 (discharge, about 1 second-foot). ICE. No record. DIVERSIONS. None between gage and reservoir; practically entire flow diverted below during irrigation season. REGULATION. Flow regulated by head gates at dam above. ACCURACY. Stage-discharge relation changed during winter. Rating curve well defined between 20 and 160 second-feet and fairly well defined above. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspection of recorder graph. Record for discharge less than 160 second-feet, good; others fair. SOOPERATION. Gage-height record furnished by Mesa Orchards Co. TRIBUTARY BASINS Discharge measurements of Lost Creek n««|r , Ide^a, during the year ending Sept. 30,1921 Gage Dis Gage Dis Date Made by-- height charge \ Made byr- , ' height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 21 Atkinson and Galloway0 1.69 41.3 July 29 Bfief and Gajhwray0, 54,3 Mar. 23 1.65 32.9 29 .....do .--. ..'..I.. . 25. 2 Apr. 30 Befketey JahnSAjju. - ^ 2.37 136 1.78 49.8 0 Galloway associated with office of Stuart M. French, Weiser., Idaho. Daily discharge, in second-feet, of Ziost Creek near fainarqck, Idaho, for the year ending Sept. SO, 1981 Day Nov. May June July Aug. Sept. Day Nov. .May June July Aug. Sept. ''%! 1 __ 194 13 42 48 16 548 12 ' 51 2 __ 18? 11 df\ 47 17 626 " 73;. 11 51 3 .... 174 11 39 47 18--. 6,72 73 '1111. 5-1 4 .... 167 39 47 19-- 657 68 51 95- 5. ... 161 11 38 47 20.... - 43 667 (vt . li 50 6 157 12 38 : * ' ,' AK 48 :' 672 ' fia 11 50 7 152 12 37 45 22 43 , 657 53. 1Q 49 8 .... 148 12 37 45 23 43 6H> 49 28- : 49 9. 142 12 36 45 24..- 9.8 548 20 45 50 10.... 427 134 12 36 45. 25-.. 6.5 412 11 47 49 11 .... 564 122 12 I5 .45 26 fi.« U , '47'45. 49 86 12.... 533 115 13 35 45 "27 6,5 265 11 49 13. ... 487 104 12 45 45 28 - 6.8 254 11 54 49 14 .... 472 96 12 51, 45 29-.. . 6.5 234 12 . 50 48 15 .... 472 8C 12 68 32 30 22-1 1? 48 48 31 204 45 4S NOTE. Braced figures show mean discharge estimated by comparison with record alsta^ion on West Fork of Weiser River near Fruitvale. No record Oct. 1 to Nov. 10 and N4v. 30 to May 9. Monthly discharge of Lost Gmek near TQma$Qck, IdQha, for-^tfo, year ending Sept. 00, mi Discharge in sec»nd-f«et Run-off in Month ' acre-feet MfuutoUin Wiaiswm, ; ,^ean 43 6.5 21.5 . > ' 426 May 10-31.. ______. __ .... __ . ______. ... 672 204 ' 475 20,700 June ______.._..._..... 194 11 91. 4 ; .. ' .VI 5,440 Julv 5458 ! 10 , ,t,320 ; M ft ^2,760 67.5 4,020 NOTE. See footnote to table of daily discharge. 14234 25 17 252' SURFACE WATER StJPPLY, 1921, PART XII B MIDDLE FORK OF WEISfiR RIVER NEAR MESA, IDAHO LOCATION. In NW. ^i sec. 10, T. 15 N., R. 1 W., at State highway bridge at former post office of Middle Fork, 2 miles above junction with Weiser River,. 2^ miles north of Mesa, Adams County, and three-fourths of a mile below former gaging station described as " Middle Fork of Weiser .Rivet near [or at] Middle Fork, Idaho." DRAINAGE AREA. Not measured. RECORDS AVAILABLE. August 18,1919j to November 12,1921, when records were discontinued. Records are available for station three-fourths of a mile up stream, October 4, 1910, to August 31, 1913. GAGE. Vertical staff on left bank bolted to tree about 25 feet below highway bridge; read by W. J. Evans. Gage at former site, three-fourths of a mile upstream, was an inclined staff on right bank. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Bed composed of gravel. Control formed by well- defined gravel riffle just below gage; shifts at high stages. One channel at all stages. Stage of zero flow as determined August 25, 1921, is at gage height 1.10 feet, ±O.Q5 foot. EXTREMES OP DISCHARGE. Maximum stage recorded during period October 1, 1920, to November 12, 1921, 6.06 feet May 20-22 (discharge, 1,070 second- feet); minimum stage, 1.70 feet October 19-23, 1921 (discharge, 10 second- feet). 1919-1921: Maximum stage recorded that of May 20-22, 1921; minimum stage, 1,58 feet August 19 to September 1, 1919, and July 24-26, 1920 (dis charge, 1.7 second-feet). ICE. Stage-discharge relation seriously affected by ice; observations discontinued during winter. DIVERSIONS.- The principal diversion is Mesa Orchards ditch, which diverts about 6^ miles upstream. REGULATION. None except that due to diversions. ACCURACY. Stage-discharge relatiofi- not permanent. Rating curve which is well defined to 420 second-feet used October 1 to November 6, 1920; curve which is well defined between 15 and 300 second-feet and fairly well defined above, and a curve parallel thereto, used November 7, 1920, to November ; :I2, 1921. Gage read to hundredths once daily, gage-height record at times is not entirely reliable. Daily discharge ascertained by applying daily gage height to rating table; shifting-control method used August 1-12 and September 1-8. Records fair chiefly because of possible inaceuracy in gage- height record. COOPERATION. Gage-height record furnished by Mesa Orchards Co. Discharge measurements of Middle Fork of Weiser River near Mesa, Idaho, during the period Oct. 1, 1920, to Nov. 12, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet See.-ft. Feet See.-ft. Nov. 23 3.40 152 Til l-v 4 C.W. Kief...... 3.15 118 Feb. 20 L. L. Bryan ______3.06 102 28 .....do...... 2.05 25.5 Mar. 24 3.77 241 Aug. 25 .....do- _ .... ___ .. 1.94 21.6 Apr. 29 __ .do.. ____ . ___ 3.79 237 Sept. 13 .....do...... 1.90 16.5 May 25 .....do...... 5.99 1,030 TRIBUTARY BASINS > '? "- 253 Daily discharge, in second-feet, of Middle Fork of Weiser River n&w Mesa, Idaho, for the period Oct. 1, 1920, to Nov^l2, 1921 Day Oct. Nov. Dec. Jan. Mar. Apr. May June Julj Aug. Sept. 1920-21 1. __ . _ . _ . __ ... 24 34 204 227 155 336 989 9^I 28 20 2 . __ . ______24 44 204 227 155 351 989 9 J 28 20 2. . ___ ...... 24 46 204 227 155 367 989 &I 26 18 4 24 53 204 264 155 367- 989 10 27 1ft 5. __ .... __ 26 53 204 264 155 400 947 &I 26 1ft 6. ____ .. ______26 58 204 320 155^ 416 1,030 8f< 26 10 7 . 26 73 204 320 155 416 1,030 SJ< 26 16 8...... 26 73 204 450 1 030 frI 26 30 #- 73 204 320 164 485 906 frI 26 15 10 30 78 193 320 164 557 906 5!) 26 15 11 . __ ... ______01 78 193 320 164 557 865 5 * 26 15 12. __ . .... - 33 83 173 336 173 557 865 4i* 24 15 13 33 83 173 336 173 631 785 4 * 24 IK 33 83 173 320 204 631 785 3f* 24 14 15. __ .. .. 33 111 193 320 204 669 594 3 * 26 TO 16. __ .-.. 33 111 193 320 204 947 557 3!? 26 TO 17 33 111 204 320 204 1,030 485 31} 26 10 M...... - ... QIC 124 193 320 215 1,03Q 485 3 24 |0 10 35 124 193 320 215 1,030 383 3 24 1O 20. __ ...... 35 124 204 264 289 1,,070 264- »^ 24 10 21., __ ...... __ 35 124 204 264 264 1,070 264 3 a 24 12 32, __ - 36 . 164 215 264 139 291 1,070 215 3 >, 24 '12 23. 36 155 215 183 291 1,030 193 3 * 24 12 24. __ . .. . 36 155 215 155 291 1,030 155. 3 > 22 10 25. __ ..,.-.-_. - oq 155 215 155 291 1,030 155 3 i 22 12 164" 26 33 155 215 320 1,030 155 3 >, 22 12 27 ... __ ... _ 33 164 215 164 320 1,030 132 3 22 12 28 34 183 215 164 .. 280 1,030 132 , 2f* 22 ' 12 29. _ 34 J193 227 155 239 1,030 111 3() 22 30.. 34 193 227 155 320 1,080' 111 3<) 22 12 31.. .. - ___ ,-QA 227 185 1,03U 3(> , 20 Day Oct. Nov Day Oct. Nov. Day Oct. Nov. 1921 1921 1921 1 . 12 U 11 11 11 21. 10 2...... -.. 12 11 12 11 11 22. 10 3. _ . _ 12 11 13 11 .. 23. 10 4. _ . 12 11 14 11 .. 24. 11 6 __ ... 12 11 15 11 25.t 11 6.. . . 11 11 16 11 .. 26.. 12 7.t 11 11 17 11 .. 27. 12 8 -. __ 11 11 18 11 - 28. 12 9. ... 11 11 19 j 10 .. 29. 12 10 .. . . 11 11 20 10 30- 12 3i. 11 NOTE. No record Jan. 23 to Mar. 21. Discharge interpolated Apr. 28., 254 SURFACE WATER SUPPLY, 1921, PART XII B Monthly discharge of Middle Fork of Weiser River near Mesa, Idaho, for the period Oct. 1, 1920, to Nov. 12, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean 36 24 31.4 1,930 193 34 109 6,490 December ______. ______.. 227 173 204 12,500 336 227 296 12,900 March 22-31 . ____ . ____ . ____ ...... _ , 183 139 159 3,150 April ., i._ ...... 320 155 216 v 12,900 1,070 336 765 47,000 June... _ ... __ .... ______. ______.,.. 1,030 , 111 583 34, 700 July -...... *...... 105 28 51.5 3,170 August .. ______. ____ ...... 28 20 24.5 1,510 20 12 14.4 857 October .. ______...... 12 10 11.2 6S9 November 1-12 ______., ______._ 11 11 11.0 262 LITTLE WEISER RIVER NEAR INDIAN VALLEY, IDAHO LOCATION. In sec. 1, T. 13 N.,R. 1 W., on Richardson ranch, 6 miles southeast of Indian Valley, Adams County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. June 26, 1920, to February 28,1921, when records wer£ discontinued. GAGE. Vertical staff fastened to^left pier of footbridge; read by C. W. Kelso until February 19 and thereafter by Joe Gill. DISCHARGE MEASUREMENTS. Made from footbridge or by wading. C HANNEL AND CONTROL.. Bed composed of lava rock overlain with gravel and cobbles. One channel at all stages; stream winding above and below sta tion. Banks of medium height and wooded. Control well defined; subject to change. . < EXTREMES OF DISCHARGE. Maximum stage not recorded during period October 1 to February 28. An estimated mean discharge of 1,400 second-feet occurred December 30; minimum stage, 0.45 foot October 5 (discharge, 14 second-feet). 1920-1921: Maximum stage that of December 30,1920; minimum stage 0.39 foot September 8, 1920 (discharge, 11 second-leet). ICE. No record. DIVERSIONS. Several small ranch diversions upstream; ditch on Richardson ranch above gage has maximum capacity of about 4 second-feet. Numer ous diversions below during irrigation season. REGULATION. None except that due to diversion. ACCURACT. Stage-discharge relation not permanent. Standard rating curve well defined and curves parallel thereto used during period of record. Gage read to hundredths twice daily. Gage-height record subsequent to February 28 not reliable enough to warrant publication. Discharge measurements only published after that date. Daily discharge ascertained by applying mean daily gage height to rating table, or by estimation or shifting-control method as noted in footnote to daily discharge table. Records good. BASINS 255 Discharge measurements of Little Weiser River near Indian Valley, Idaho, during the year ending Sept. 80, 1921 Q age Dis Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 24 1.24 123- July 4 C W Viat 0.82 105 Feb. 19 1.1ft 120 28 .... .do. . .48 33,6 Mar. 25 1.30 196 Aug. 25 .....do ... .35 17.8 Apr. 29 __ do ______1.43 236 Sept. 13 do . ,. .>. .34 17.8 do .. ..-. 2.83 779 Daily discharge, in second-fed, of Little Weiser River near Indian Valley, Idaho, fdr the period Oct. 1,1920, to Feb. »8, 19$ 1 Day Oct. Nov. Dec. Jan. Feb. Day Oci Nov. Dec. Jan. Feb. >" '29 1 ...... 15 18 82 227 82 16 .. .!_..;.- Hi 57 82 160 2 ______. 15 21 §8 : 309 77 17...... J. 26 418 63 79 105 3 .. 1 18 '25 75 233 7S 18. ____ . 31 809 50 418 liO 4,., ...... 17 22 79 202 75 1Q 34 m, ,, .52 OAO 102 5 14 28 52 . 227 66 20...... ,,.28 395 48 tffo 7& «. _____ ... 15 31 29 178, 36 21. ______... 28 193 41 124 84 7. _ .. __ .. 36 26 15C 70 22 . "31" 181 41 110 7& 8...... 17 20 } 70 146 77 23. _ _ _ * 26, . 149 , 41 118 110 .9. ____ .... 20 23 66 , 146 75 24 ______26 129 '4152 ft* 121 10.... _._. . 34 . 15 61 132 84 . '25...... L...-L'.- > ; "27' ' 113 ::'. 77 124 28' "89 11. ____ .... 17 70 110 '2*. . . - 27 ! 190 31 100 110 12. _____ ... 44 26 61 105 27.... 28 167 . 38. ,102 #0 13. ______. 35 26 52 1 100 ,2Q5 28.-.. . 29 118 48 97 1371Q7 14...... -....: 32 24 35 292 2ff.J-. .... 28 $9 70 80 26.- 15...... 39 24 25 84 193 30 . ' 24 102 1,460 94 31.... . 326 82 \ NOTE. Discharge estimated for following periods when gage was riot read or readifigs were mkrelisfele: Dec. 7, 8, 30, Jan. 12-14, and Feb.28. Shifting-control method used Noy. 17-19 amd Dec. 30. Braced fig ures show estimated meari discharge for period's indicate'd. Monthly'.discharge of Little Weiser River near Indian Valley, Idaho, for the period Oct. 1, 1920, to Feb. 28, 1921 . Diseharge'ia second*fect ' ; . Eun-off in Month acre feet Maximuta Minimum ' Mean. 44 . 14 26.7 1;&40 597 15 118 7,020 1,400 25 106 6,520 418 77 144 8,850 292 36 109 6,050 30,100 256 SURFACE WATER-SFPFLY, 1921, PART XII B LITTLE WEISER RIVER NEAR. CAMBRIDGE, IDAHO , ,. LOCATION. Near line between sees. 8 and 9, T.vl4 N., R. 2 W., on Gladhart Lane, half a mile south of State highway, 4J^ miles east of Cambridge, Washington County, 5 miles above mouth, and 7 miles below mouth of Grays Creek. DRAINAGE AREA. 187 square miles (measured on topographic maps and United States Geological Survey base map of Idaho). RECORDS AVAILABLE. May 22, 1920, to September 30, 1921. GAGE. Vertical staff fastened to streamward side of right abutment of wooden highway bridge; read by Mary M. Lynch and Mrs. W. J. Martin. DISCHARGE MEASUREMENTS. Made from wooden highway bridge at gage or by wading. CHANNEL AND CONTROL; Bed composed of sand and gravel. Channel winding above and below gage, banks subject to overflow at high stages. Control formed by well-defined gravel riffle about 75 feet below gage; subject to change during high water. Stage of zero flow at gage height 1.30 feet as determined August 25, 1921, EXTREMES OF DISCHARGE. Maximum stage recorded during year, 6.70 feet at 4 p. m. March 18 (estimated discharge, 1,990 second-feet). An estimated mean discharge of 2,350 second-feet occurred December 31 when gage was submerged. Minimum stage, 1,55 feet August 31 to September 2, 10, 11 (discharge, 0.6 second-foot). 1920-1921: Maximum discharge that of December .31, 1920; channel reported dry August 2 to September 14 and September 17-25, 1920. ICE. None reported. DIVERSIONS. Numerous ditch and canal diversions above, chiefly for irrigation of land in Indian Valley. REGULATION. None except that due to diversions. ACCURACY. Stage-discharge relation changed during high-water period. One fairly well defined curve and two curves which are well defined between 30 and 800 second-feet and curves parallel thereto used during the year. Above 800 second-feet curves- are an extension. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table except as noted in footnote to daily discharge table. Records for discharge between 3 and 30 second-feet subject to error because of poor definition of rating curve. Records for other discharge up to 800 second-feet are good, above 800 second-feet, fair. Discharge measurements of Little Weiser River near Cambridge, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 25 F. M. Atkinson ...... 2.61 167 May 26 4.72 978 Feb. 19 2.82 234 July 4 C. W. Kief ...... 2.44 109 Mar. 26 Berkeley Johnson ...... 3.31 433 28 .....do -- .. 1.83 5.8 Apr. 28 2.92 282 .....do - ...... 1.58 .8 .....do...... 3.06 337 .....do --.. 1.68 .7 24 -d° ------4.64 879 257 Daily discharge, in second-feet,,of Little Weis&r River near Cambridge, Idaho, for the year ending Sept. 80, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug., Sept. 1 ______2 40 155 903 202 308 308 269 588 142 4 0.6 2 _ .. _ ...... 4 33 209 556 192 389 308 328 588 130 3 .« 3. _ . _ - _ . 4 33 195 685 192 493 389 328 667 130. 2 v .6 4...... 4 37 S7i 514 195 771 328 328 667 116 2 .6 5 __ . _ _ 4 26 130 1,260 192 903 308 368 667 113 2 .6 6. _ ...... _ . 4 26 161 642 155 685 269 368 667 102 3 .6 7_. ___ ...... 16 26 158 410 149 642 250 410 667 90 '23 .6 8. _ ...... 26 26 136 308 188 599 231 430 749 78 .6 9... _ ...... 27 26 124 ' 269 161 556 231 451 708, 78 1 .6 10...... __ . 27 26 152 224 161 599 250 493 667 63 .8 .6 11 ...... 29 29 308 199 231 599 288 493 667 59 , 8 .6 12. ____ ...... 32 29 224 168 308 472 308 493 588 57 8 .6 13...... 32 34 164 224 288 685 614 493 512 53 8 .7 14... . ___ .. 34 32 130 213 556 1,080 472 556 475 49 6 .7 15...... 37 33 122 217 430 642 389 599 401 42 8 3 16 _ . __ ...... 40 47 127 168 348 1,080 348 815 365 42 3 7 17...... ____ . 40 231 158 164 269 1,170 308 859 365 33 3 8 18 __ ...... 40 348 142 556 231 1.640 328 728 329 28 2 8 19...... 40 685 122 1,300 231 1,170 348 1,040 293 26 1 28'9 20...... 43 556 113 514 250 728 389 1,080 276 27 .8 21 __ ...... A.1 wist 100 3S» 231 7OQ 348 1 ^*yi 276 20 26 22 47 231 95 308 213 599 348 1,120 258 15 .8 23 23. _ .. __ . ... 47 217 108 250 192 599 389 947 258 12 .7 19 24...... 40 188 116 250 195 685 348 919 241 12 .7 17 25..-...... 40 164 97 231 206 514 308 919 241 14 .7 16 26 __ ... __ .. 40 ' 410 78 231 220 430 308 962 191 10 .7 14 27 ___ ...... 40 599 80 199 224 368 269 919 185 8 .7 12 28 __ - _ . _ . 40 250 85 195 250 348 269 833 166 6 .7 12 29 __ ...... 40 199 97 192 308 288 667 157 5 .7 10 30...... 40 168 1,080 224 308 288 708 148 4 .6 10 31.. 40 2,350 206 308 588 4 6. NOTE. Shifting-control method used May 3-23, July 20-22, Aug. 6-9. Gage not read Oct. 25, 26, 28, 29, and Dec. 25; discharge interpolated. Water over top of gage Dec. 31; discharge estimated. Monthly discharge of Little Weiser River near Cambridge, Idaho, for the year ending Sept. 80, 1921 Discharge in second-feet Run-off Month in acre-feet Maximum Minimum Mean 47 30.4 1,870 685 26 169 10,100 December ______:_. 78 242 14,900 1,300 164 391 24,000 556 149 238 13,200 1,640 308 658 40,500 April..... -. _.- 514 231 324 19,300 May ...... 1,350 269 673 41,400 749 148 434 25,800 July- .. . . .- .._...... 142 4 50.6 3,110 4 .6 1.42 87.3 September ______. __ ...... 28 .6 7.69 458 .6 269 195,000 258 SURFACE WATER SUPPLY, 1921, PART XII B CRANE CREEK AT MOUTH, NEAR WEZSER, IDAHO LOCATION. In sec. 14, T. 11 N., R. 4 W., just below steel highway bridge at Harris ranch, a quarter of a mile above mouth and 12 miles northeast of Weiser, Washington County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. July 14, 1920, to September 30, 1921. GAGE. Friez water-stage recorder in concrete shelter on right bank, installed July 21, 1920; inspected by L. O. and Erma L. Van Leuven. DISCHARGE MEASUREMENTS. Made from highway bridge just above gage or by wading. CHANNEL AND CONTROL. Bed composed of cobbles and boulders; very rough. Concrete control installed August 21, 1920, 100 feet below gage. Above stage of about 4.0 feet stream flows in two channels. Stage of zero flow at gage height 1.25 feet±0.05 foot as determined May 20, 1922. EXTREMES OP DISCHARGE. Maximum discharge during the period February 21 to September 30,5.60 feet March 13 (discharge, 1,260 second-feet); minimum stage, from water-stage recorder, 1.36 feet at 2 a. m. May 6 (discharge, 0.5 second-foot). ICE. No record. DIVERSIONS. Canal of Crane Creek Irrigation District, which diverts about 4 miles above gage, is principal diversion. Several small ranch diversions divert a short distance above gage. REGULATION. Flow is regulated by head gates at Crane Creek reservoir and by diversions above. ACCURACY. Stage-discharge relation permanent. Rating curve is well denned up to 600 second-feet. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph. For discharge up to 20 second-feet records are good, above this point they are excellent. COOPERATION. Services of observer paid by Weiser Irrigation District. Discharge measurements of Crane Creek at mouth, near Weiser', Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by- height charge Feet Sec.-ft. F Sec.-ft. Nov. 26 F. M. Atkinson ___ 4.20 »337 1.54 1.4 Feb. 22 5.09 6885 July 2 1.41 °.5 Mar. 20 Johnson and Fiedler ... 4.68 « 570 24 Kief and Northrop <* _ 1.98 14.5 21 2.52 . 51.8 Aug.. 27 0. W. Kief _...-.--.. 2.35 36.8 28 1.83 8.-1 ...... do...... _ ... 1.96 14.5 Apr. 27 __ do ______1.90 11.4 0 Estimated. & Includes 97.2 second-feet measured in overflow channel. c Includes 25.5 second-feet measured in overflow channel. d Galloway and Northrop associated with office of Stuart M. French, Weiser, Idaho. TRIBUTARY, Daily discharge t i , of Crane or the period Feb. 21 to Sept. 30, 1921 Day' " ' ' Feb' Mar. Apr. ' May Jufle July Atigi- Sept. 1 ______905 612 5.1 '22 "" 0.'5 ' 50 ' 36 2 ______...... ,.; . . .. 5.9 . 2.1 19 .5 51 Xt'< a...... ___ _ _...... :.. 5.3 ' .7 22 .5 50 3S ,4 ___ , '...I .... . 4.8 .& 19 ,5 ,-: !46 »3g 5.,. _ . _____ . ___ .. ______, 1,040 4.6 .5 16 .5 .. '46 38 6...... ___ .. ___ . _____ . ____ 4.3,, ".6.« 14. ., .7 46 3? 7...... __ . .... 4.1 14 .9 48 46 8,...... ______..:...... ! 3.6 . . .6 16 l.ft- .;-( 50. 41 9 __ .. __ ... ______. __ ...... 24 .. '£' 16 1-2 5Q . 45 10... __ .-.. ___'_ .'. .. . ' 30 1 ' IS , -\r ' SO " 46 48", t t 11...... 235 11 1.6, 7.0 .9 ; 49 12*...-. L-__.__.._.___.___._.__ ie* 8.6' S.« 1.4 ' '46 48) 11 4.0 -& 279 11 }'13 5.1 «*1.^6 20 $:::::::::::::::: ::::::::r::: 1,120 7:0 10 47' ->' 13 15 ftQjT S 1 15 7.fl 4.1 ' ® , 13 16 __ ...... _ . _ ...... 827 5.1 21 3.9 3.9 . 82 13 17. _ _ .______. __ ..... _ .,,. 827 , M 22 2.6 ^l Q Id. is...... ::.._..._....._..I'. 862 $ 1 2 ' ! ftg- ' 97" ,v}|i l».._- Tr .-...:....,...... ^... 721 . 34 ; 1,1 , ' »M 60-ftn ' < ; 16 20-.--..,_____l.....,_._.____.___ .... 386 , 138 .7 1,7 A .,6° 16 21.. ______...... 897 AQ 8. 0 ,1 . ,2.7,. :. -4-. 20 22 ____ . __ . ____ . ______. 897 52 2s6 .7 ; '7.01 ' 29 23 --,--, ,....-.-..,.--..-. - 867 39 m, &S, ' 1011 ?f 11 24 __ . ______...... 862 44 63 1.1 . 37. 6.4 25..... ______. __ ...... ; 897 30 13 , 27- i .« ,14 > 3« 6.7 " 14 ; 26., ______.. 827 14 13 ."f is 38 6.4 27...... _ . _ . ____ _ . __ 671 11 10 16 > .« '.: -34 36 ,-, 9.4 28 _____ . ______... ____ ... _ 481 8.6 23 1ft -.7.6 39 36 6.2 29___.__._.__._...__.__.__.__._._..___ 9.6 233 8.6 43 S6 6.4 30,...___...... _,_.___.._.,_._____.._._ 9.2. 16 . ; 11 ; '.. i ,7.. 46 ' 3536 , 11 31. _ . ______.. _ ...... ____ . 6.7 24 49 > ' Iri ', . .;") ". NOTE. Braced figures show estimated tnean discharge tot periods" indieated. Ddseharge estimated Apr. 18-24, May 12 and 13, and interpolated May 22, Juae,17,.aB4 Sespt. 2; gage not rea Discharge in second-feet ! RuQ-ofi in Month acre-feet Maximun Minimum Mean March 11-31 __ . ____ , ______-_ 1,120 17 312 13,000 April _ . ___ ...... __ . __ ...... __ . ____ . 233 3.6 17.0 1,010 426 .5 43.7 2,690 22 .6 7.57 450 Jnly - - -..- ...... _ -. . *-. 49 .5 10.0 615 August.... _ .. ______60 35 46.0 2,830 48 6.2 24.2 1,440 The period _____ . __ . ______22,000 14234 25- -18 260 SURFACE WATER SUPPLY, 1921, PART XII B CRANE CREEK: IRRIGATION DISTRICT CANAL NEAR WEISER, IDAHO LOCATION. In sec. 18, T. 11 N., R. 3 W., 3<^ miles below diversion dam of Crane Creek Irrigation District and 12 miles northeast of Weiser, Washing ton'County. Prior to September 15, 1921, gage located in sec. 3, T. 11 N., R. 3 W., at head of flume 150 feet below diversion dam. RECORDS AVAILABLE. June 23, 1920, to September 30, 1921. GAGE. Friez water-stage recorder installed September 15, 1921, on left side of and 700 feet above end of wooden flume. Prior to September 15, 1921, water-stage recorder located 150 feet below head of flume and 3% miles above present location. Gage inspected by John R. Scott. Except for small leakage between two locations flow is about the same at both points. DISCHARGE MEASUREMENTS. Made from plank across flume. CHANNEL AND CONTROL. Section of wooden flume forms control. Zero flow de termined for upper location June 25, 1920, as at gage height 0.36 foot. For new location, control formed by section of wooden flume and earth section of canal below. EXTREMES OF DISCHARGE. Maximum stage during irrigation season, from water- stage recorder, 1.94 feet July 27-29 (discharge, 69 second-feet); minimum stage, 0.97 foot (new datum) September 30 (discharge, 18 second-feet). Canal dry during nonirrigation season. 1920-1921: Maximum stage recorded, 2.83 feet at 4 to 8 a. m. July 15 (discharge, 79 second-feet); canal reported dry during nonirrigation season ICE. No record. Canal dry except during irrigation season. DIVERSIONS. None between gage and point of diversion. REGULATION. Flow controlled by head gates at head of flume. ACCURACY. For original location of gage, stage-discharge relation changed be cause of removal of check boards. Rating curves are well defined. For period September 16-30 for new location of gage, rating curve which is well defined chiefly by 1922 measurements. Daily discharge ascertained by ap plying to rating table mean daily gage height obtained by inspection of recorder graph. Records excellent. COOPERATION. Crane Creek Irrigation District furnished services of an observer. The Crane Creek Irrigation District canal diverts water from the south side of Crane Creek in sec. 3, T. 11 N., R. 3 W., 5% miles below Crane Creek reser voir where water is released and transported through canal for irrigation of lands in the Crane Creek and Sunnyside irrigation districts, aggregating 10,000 acres, of which about 6,200 acres are in cultivation. The districts operate about 100 miles of canals and irrigation structures under one management. Discharge measurements of Crane Creek Irrigation District canal near Weiser, Idaho, during year ending Sept. SO, 1921 Gage Dis Gag© Dis Date Made by height charge Date Made by height charge Feet Sec.-fi. Feet Sec.-ft. July 2 Kief and Galloway. __ 2.21 -63.7 July 26 C. W. Kief ...... 1.64 54.9 26 C. W. Kief ... _ . _ .. 1 Q4 69 4 -..-.-do 1.71 «43.6 26 .....do. ____ . ___ 1.30 41.9 "Measured at lower end of flume at location used after Sept. 15. NOTE. Galloway associated with office of Stuart M. French, Weiser, Idaho. TRIBUTARY BASINS 261 Daily discharge, in second-feet, of Crane Creek Irrigation District canal near Weiser, Idaho, for the year ending Sept, SO, 1921 Day Oct. May June July Aug. Sept. Day Oct. May June July Aug. Sept. l _ ...... 27 38 65 67 59 16...... 57 66 61 42 2... ____ 28 38 65 67 60 17. _ .. _ . 58 66 62 41 3...... 28 41 65 67 60 18...... 58 67 62 41 4 __ ...... 28 44 65 65 60 19 __ ...... 57 67 61 42 5.. ___ ... 28 47 65 65 59 20 _ ...... 52 66 61 1 6. _ ...... 28 49 65 65 59 21. _ ...... 55 66 59 35 7 __ . __ . 26 iQ 65 65 58 22...... f>9 67 61 28 8 __ ...... ,26 49 65 62 ' 5566 23 64 67 61 25 0 ...... 26 49 65 60 24 __ .. _ . 67 67 61 24 10 __ ...... 26 48 65 60 54 25 __ ...... 68 67 62 24 " 68 11. _ ...... 26 48 65 61 51 26 ...... 66 61 34 12. _ ...... 26 49 65 61 51 27 __ ...... 67 69 61 23 13 __ ...... 26 49 65 61 50 28 __ .. _ . 47 66 69 61 23 14 __ ...... 26 53 66 62 50 29...... 48 65 69 61 21 15 __ -..___ 26 55 66 62 49 30...... 49 65 67 61 18 31 __ ... _ 44 67 60. NOTE. No record Oct. 16 to May 27. ,., Monthly discharge of Cmne Creek Irrigation District canal near Weiser, Idaho, for. the year, ending Sept. 80, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum Minimum Mean October 1-15. _____ . . ___ 28 26 26.7 794 May 28-31. ______. _ . __ ... . 49 44 47.0 373 June. ______.^i.i 68 38 54.4 8,240 July...... 69 65 66.1 4,060 August ______... . __ . 67 59 62.1 3,820 September ______...... 60 18 42.8 2, -550 NOTE. See footnote to table of daily discharge. WEISER IRRIGATION DISTRICT CANAL NEAR WEISER, IDAHO LOCATION. In sec. 32, T. 11 N., R. 4 W., at Durbin ranch, 1^ miles below headworks of canal and 7 miles above Weiser, Washington County. RECORDS AVAILABLE. April 29,1920, to September 30, 1921. GAGE. Friez water-stage recorder in concrete well adjacent to left side of con crete rating flume; inspected by L. H. Alsop and J. A. Swann. Zero of gage is at bottom of rating flume. DISCHARGE MEASUREMENTS. Made from footwalk across concrete rating flume. CHANNEL AND CONTROL. Canal above and below gage is about 20 feet wide. Bed composed of hard clay and gravel; "fairly permanent. Banks are clean and not subject to appreciable growth of moss or weeds. EXTREMES OP DISCHARGE. Maximum stage during irrigation season ending September 23, 1921, from water-stage recorder, 3.36 feet at 4 p. m. July 3 (discharge, 172 second-feet); minimum stage, 1.34 feet at 6 p. m. October 1 (discharge, 45 second-feet). Canal is dry except during irrigation season. 1920-1921: Maximum stage recorded, 4.13 feet at 2 p. m. May 23, 1920 (discharge, 206 second-feet); canal is dry except during irrigation season. ICE. No record. DIVERSIONS. One farm lateral diverts one-fourth mile above gage. 262 SURFACE WATER SUPPLY, 1021, PART XII B REGULATION. Flow regulated at Luck waste gate, half a mile above, which in practice forms the head of the canal although actual diversion from Weiser River is located 13^ miles above gage. Water from waste gate returns to Weiser River through a slough which formerly was the main channel of the river. ACCURACY. Stage-discharge relation not permanent. Rating curve which is well defined between 20 and 200 second-feet used October 1-16 and for re mainder of record a curve was used which is well defined between 85 and 175 second-feet and curves parallel thereto. Daily discharge ascertained by applying to rating table mean, daily gage height obtained by inspection .of recorder graph; shifting-control method used July 11-21 and August 12-18. Records good. COOPERATION. Services of observer furnished by Weiser Irrigation District, The Weiser Irrigation District canal diverts water from the north side of Weiser River in sec. 3, T. 10 N., R. 4 W., 1^ miles above gage, and furnishes water for irrigation of about 9,600 acres near Weiser, included in projects of Weiser Irri gation District and Weiser Bench Irrigation Co. The district maintains about 20 miles of main canal. Discharge measurements of Weiser irrigation District canal near Weiser, Idaho, during the year ending SepL $0, 19S1 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. 2.36 Ill July 25 C. W. Kief _ .. 2.16 90. « 27 do... .. 2.20 100 Aug. 27 . do . 2.45 118 July 2 C. W. Kief.., 3.22 163 Sept. 14 .....do. _ . ___ ...... 2.42 116 Daily discharge, in second-feet, of Weiser Irrigation District canal near Weiser, Idaho, for the year ending Sept. SO, 1921 Day Oct. June July Aug. Sept. Day Oct. June July Aug. Sept. 1 __ . _ .... 45 155 114 109 16 - . 75 149 118 117 2 ...... 47 158 117 108 17...... 149 140 115 3 __ ...... 48 168 11Q 18 __ . __ 128 119 4 __ ...... 48 164 108 114 19 _ ...... 122 131 5 ...... 49 152 114 128 20...... 113 143 114 6 ...... 48 140 117 128 21. _ 149 103 143 88 7 ...... 49 146 119 122 22...... 149 102 128 86 8 __ . _ .... 49 155 119 119 23...... 152 98 125 84 9. ___ ...... 54 155 131 118 24..- _ ..... 152 92 122 10-. _ ...... 56 158 112 118 25 .... _ . 155 88 118 11 _ .. _ .... 51 168 105 119 26 __ ...... 155 90 117 12 __ . _ . ... 60 164 101 122 27 ..., 152 114 117 13 __ . __ .. 64 164 112 117 28 _ ..... 152 122 119 14 _____ .... 68 161 102 114 29...... 152 119 118 ! , 15 _ __ .... 67 158 109 116 30 _ . . __ 152 115 114 31...... _ . 122 NOTE. No record Oct. 17 to June 20. Monthly discharge of Weiser Irrigation District canal near Weiser, Idaho, for the year ending Sept. 30, 1921 - Discharge in second-feet Run-off in » Month a re-feet Maximum Minimum Mean October 1-16 ____ ... ______. ______75 45 54.9 1,740 155 149 152 3, 010 July 168 88 135 8,300 152 101 120 7,380 128 84 114 5,200 NOTE. See footnote to table of daily discharge. 3SWBUTAHY BASffiNS , . MANN CREEK NE4R WEISER, IDAHO , ( LOCATION. In sec. 11, T. 12 N., R. 5 W., at Boswell ranch, a quarter of a miler above dam site, 12 miles above mouth, aad 11 miles northeast of Weiser, Washington County. DRAINAGE AREA. Not measured. RECORDS AVAiLABMB.-*-MarGh 9, 1911, to September 30, 1913, and July 9 to November 27, 1920, when records were discontinued. GAGE. Vertical staff on right bank, 15 feet below old footbridge and 506 f-eet above Boswell ranch house; installed July 9, 1920; read by Irving Bos- well. Original gage was an inclined staff at about the same site as present gage. Relation between present and former gage not known. DISCHARGE MEASUREMENTS. Made by wading. f 0 x CHANNEL AND CONTROL. Bed composed of gravel and cobbles. Banks subject to overflow at high stages. Control formed by fairly well : defined gravel riffle 30 feet below gage; subject to shifting a* high Stages. Stage of zero flow at gage height 0.70 foot, ±0.15 foot as determined August 27, 1920. EXTREMES OP DISCHARGE. Maximum stage recorded during jieriod October 1 to November 27, 3.40 feet morning of November 19 (discharge, about 1&9 second-feet); minimum stage, 1.10 feet October 4 (discharge, 1.7 second-feet). 1911-1913;' 1920: Maximum stage recorded, 4.8 feet April 29, 1912 (dis charge, 390 second-feet); minimum discharge, 0.1 second-foot August 16-26, 1920. ICE. No record. DIVERSIONS. Barker ditch, with a capacity of about 8 second-feet, diverts water around gage. Two other small ditches divert water above the gage for irri gation of about 140 acres of land. ACCURACY.-1 Stage-dischatge relation permanent. Rating c*«rve is well defined. ; Gage read to hundredths twice daily. Daily discharge ascertained by ap plying mean daily gage height to rating table. Records good. The following discharge measurement was made by F. M. Atkinson: November 18, 1920: Gage height, 2.62 feet; discharge, 83.1 second-feet. Daily 'discharge, in second-feet, of Mann Creek near Weiser, Idaho, for the period Oct. 1 to 'Nov. % Day Oct. Nov. Day Oct. Nov. Day Oct. Nov. 1...... 8.1 11.... __ . .... 5.2 9.2 21..... __ .... 7.8 44 2...... _ . _ ,. } 2.7 8.4 12... _ ...... 6.4 10 22. _ . ____ . 7.6 45 3...... _ . 2.8 8.6 13...... 6.8 11 23. _ . _ . _ . . 6.8 32 2.0 8.4 14 - ___ ,____ 6.8 30 24 ______... 8.6 28 5 ...... _ . 2.3 7.3 15.... ______9.7 32 25.. ___ ..... 6.6 29 6 ,.,.,.. _ ., -,2.8 7.3 ld-..J^4*M ..^ 7,6 39 26. __ ,. _ ,... 7.6 31 7...... _ .... 8.6 8.6 17...... __ .. 6.4 46 27. _ . ____ . 7.8 44 8'JJ.. - .... 1 ' 9 '5 "9.2 18...... -«.^J.. . '8.4: 77 28 __..___ .... . ».4 9 _ . ____ ,5.0 8.9 19_. ._..; ..... 8.4 139 29...... __ ... 7.8 10. .. __ . _ 5.2 8 9 20 ....: __ . 7.3 Sfl 30..... __ .... 7.8 31.. ___ ....- 7 fi NOTE. Discharge estimated Oct. 1 and 2. STTBFAQ1L JBAISUt SUPPLY, 1921, PART XII B Monthly discharge of Mann Creek near Weiser, Idaho, for the period Oct. 1 to 27,1920 Discharge in second-feet Run-off Month in acre-feet Maximum Minimum Mean October _____ . ______...... 9.7 2.0 6.43 395 November 1-27 ______. .... 139 7.3 30.2 1,620 2,02ft POWDER RIVER NEAR NORTH POWDER, OREG. LOCATION. In NE. ^ sec. 12, T. 6 S., R. 39 E., at entrance to short can yon below North Powder Valley, 3 miles northeast of North Powder, Union County; below all tributaries and return water from irrigation in the North Powder Valley and near the backwater of the proposed Thief Valley reservoir. DRAINAGE AREA. 775 square miles; at lower end of Thief Valley, 826 square miles. RECORDS AVAILABLE. May 20, 1913, to September 30, 1915; March 10 to July 31, 1916; February 1 to July 31, 1920; and November 21, 1920, to Septem ber 30, 1921. Records at this station are almost directly comparable with those at station below Thief Valley, March 9, 1909, to June 30, 1912, as the inflow between the two points .constitutes only a negligible percentage of the total. GAGE. Inclined staff on left bank about 8 feet above vertical staff at same datum used June 20, 1913, to October 12, 1914. Vertical staff a short dis tance above, at independent datum, used May 20 to June 19, 1913. DISCHARGE MEASUREMENTS. Made from cable at gage or by wading 400 feet above gage. CHANNEL AND CONTROL. Bed composed of rocks with some sand; probably shifts slightly. EXTREMES OP DISCHARGE. Maximum stage recorded during period, November 21 to September-30, 8.1 feet May 20, 21, 24, and 25 (discharge, 3,010 second-feet); minimum discharge estimated as 1 second-foot August 14-31. 1909-1916; 1920-1921: Maximum stage recorded, that of May 20, 21, 24, and 25, 1921; stream bed dry in August and September, 1910. ICE. Stage-discharge relation seriously affected by ice. No ice during period of record in 1921. DIVERSIONS. Water is diverted from Powder River and its tributaries for irrigating 72,000 acres of land above this station. REGTJLAT i ON . None. ACCURACY. Stage-discharge relation probably permanent. Rating curve well defined below 2,000 second-feet. Gage read to hundredths once a day. Daily discharge ascertained by applying daily gage height to rating table. Records good. No discharge measurements made during the year. TRIBUTARY BASINS 265 Daily discharge, in second-feet, of Powder Rioer near North Powder, Oreg,, for the year ending Sept. 80, 1921 Day. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. . 1 __ . _ ...... 128 159 274 425 858 902 2,440 216 15 2. ___ ... _____ .. 128 176 287 455 902 815 2,260 216 15 I t>. V 3...... 185'176 287 486 902 774 2,140 195 21 4. _ ..... __ ...... 135 300 620 993 734 2,080 195 1 23 5 ___ . _____ . ... 135 167 313 815 .993 ^74 : 1,970 185 5.2 27 6 ___ .. _____ ... 143 159 313 902 1,040 858 1,920 185 32 7 __ . ______143 151 313 993 1,090 947 1,810 176 37 8.... -...... -... 143 143 313 947 1,090 1,090 1,810 167 42 9 ...... -...... ---.- 135 128 326 993 993 1,280 1,700 159 3.0 42 10 ______. ... 128 143 340 947 947 1,380 1,540 143 44 11 __ ..i _____ . ... 128 159 313'326 993 947 1,540 1,440 128 42 12. ___ ... ___ . .... 128 195 993 902 1,650 1,490 114 2.0 47 13 ____ . ___ ...... 128 216 313 947 902 1,760 1,330 100 52 14 ___ . ______.. 135 195 313 947 902 1,810 815 87 47 15 _____ . __ - _ - 135 216 313 993 902 2,080 774 81 47 16 __ . ____ ...... 143 216 326 993 902 2,320 734 52 52 17. _ .... ___ ...... 151 227 340 993 902 2,380 695 52 114 18 . 159 216 340 993 858 2,380 620 ,42 63 19 __ ..... _ ...... 159 195 368 1,040 902 2,730 620 42 63 20 ___ .. __ . _ .... 167 185 368 993 902 3,010 585 47 63 21...... ______.1. 63 176 185 368 993 902 3,010 551 47 75 22.. ___ . _ . _ .... 75 195 176 382 947 902 2,960 518 37 1.0 81 23...... 81 195 176 382 902 858 2,960 486 32 81 24 _____ ..... ___ .. 87 195 185 396 858 902 3,010 455 32 87 25...... 100 216 195 396 815 902 3,010 455 27 81 107 195 195 396 815 902 2,960 425 27 75 27 __ . ___ . _ . _ .. 114 195 216 396 734 902 2,670 396 23 75 28 ___ ... __ ...... 121 185 227 410 695 902 2,380 340 15 73 29 _ .. ___ .. ___ ... 128 185 238 734 902 2,610 313 15 69 30..... ___ .. __ .. 128 167 262 734 902 2,610 262 15 52 31.... ____ . _ . .... 167 262 815 2,490 15 NOTE. No gage-height record Aug. 1-5, 7-12,14-31 (mean discharge for periods, estimated). Monthly discharge of Powder River near North Powder, Oreg., for the year ending Sept. 30, 1921 Discharge in second-feet Hun-off in Month acre-feet Maximum Minimum Mean November 21-30 ...... 128 63 100 1,980 216 128 156 9,590 262 128 191 11,700 410 274 340 18,900 March...... 1,040 425 855 52,600 April...... 1,090 858 927 55,200 3,010 734 2,000 123, 000 June . _ , 2,440 262 1,100 65,400 July ...... - ___ ...... 216 15 92.5 5,690 5.2 1.87 115 114 15 54.6 3,260 The period ______. ___ . ___ ., 347,000 SURFACE , '19&1,1 PART XII B HlVER AT ; IDAHd LOCATION. In sec. 3, T. 10 N. R. 13 E., a quarter of a mile above mouth of Valley Creek, half a mile northwest of new Stanley post office, arid three-quarters of a mite southwest of old Stanley, Ouster County. DRAINAGE AREA. 355 square miles (measured on topographic mapsj. RECORDS AVAILABLE. May 2 to September 30, 1921, GAGE. Vertical staff on left bank; read by E. P. Huffman. DISCHARGE MEASUREMENTS. Made by wading at low and medium stages. High- water measurements made from. wagon bridge 1^ miles above or from wagO;n bridgei t.-tnile below. To determine flow past gage flow of Valley Creek must be deducted from measurements made at lower bridge. CHANNEL AND CONTROL. Bed composed of gravel and boulders; permanent. Control well defined but not sensitive owing to width and swift current. Banks fairly low; one channel at all stages. EXTREMES OF DISCHARGE. Maximum stage recorded during period May 2 to September 30, 3.8 feet June 12 (discharge, 4,390 second-feet) ; minimum stage recorded, 1.02 feet September 30 (discharge, 290 second-feet) . ICE. No record. DIVERSIONS.- None above gage. REGULATION. None. ACCURACY. Stage-discharge relation permanent. Rating curve well defined be low 2,500 second-feet. Gage read to hundredths once daily. Daily dis charge determined by applying daily gage height to rating table. Records good below 2,500 second-feet; others fair. Discharge measurements of Salmon River at Stanley, Idaho, during the period May 2 to Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. 2.84 "2,220. July 23 C. G. Paulsen. _ _. 1.65 757 July 5 Berkeley Johnson _ 2.16 61, 240 Aug. 31 Berkeley Johnson ...... 1.11 315 "Made \y% miles above gage. 6 Made 1M miles below gage and below Valley Creek, flow of which was deducted. Daily discharge, in second-feet, of Salmon River at Stanley, Idaho, for the May 2 to Sept. 30, 1921 Day May June July Aug. Sept. Day May June July Aug. . Sept. 1. __ . __ .. 2,160 2,160 588 320 16 1,760 3, 220, 925 498- 298 2 __ . __ ... 426 1,910 1,830 550 316 17.... l,8ad 2,770 . 875 498 288 3, ____ .... 462 2,080 533 1Q 1,6J8Q .2,080 ..875 498 339 4.. __ ..... 642 2,260 1,420 498 320 1Q 1,550 1, 910 775 568 320 5 ____ ..... 632 9 dftfi 1 300 484 20. ______2,160- 1,830 77*s , Mf> 320 ft. : . t!32 2, 770 1,300 484 - - 302 fft 2,260 r,S3lT 775 ' V& 320 7...... 728 2,990 302 1,300 775 498 316 8. _ ...... 875 3,450 1,300 455 309 23.. _ ...... 1,250 2,360 728 426 316 9. ____ .... 875 3,680 426 313 3 990 79O 316 10 ___ ...... 925 1,190 313 95 2,560 680 320 316 11 ...... 975 3,910 1,140 313 26 1,360 2,460 661 316 316 12...... 1,030 4,390 1,080 403 302 27...... __ 1,420 2,160 309 313 13 ____ . __ 1,080 4,390 QQ7 00 1,420 2,160 COO OftQ O1O 14...... 1,190 3,910 1,080 498 294 29 1,550 2,160 585 320 302 15 __ . _ .... 1,360 3,910 975 498 302 30... _ ... 1,830 320 290 31... _ ...... 2,080 585 320 Monthly 'discharge of Salmon River'at'Stdrdiey, Mah'o, for'the period 'May 2 $ 'Sept. 3' Discharge -in- seeovicMeet Run-ol ,..,, Month Pef Maximum Minimum' Mesh square Inches Acre-feet mile May 2-31 ___ ...... 2,260 42B 1. 260 3.55 SM 75, 000 4,890 £880568' 2,770 7.80 8.70 ,165,000 July. _ .... _._.___^___ ...... 2,160 1,020 2.87 3.31 62,700 August __ . ______.. 568 309 442 1.25 1.44 27,200 September __ 339 290 311 .876 .98 18,500 The period _ iL-_.-l 348,000 SALHOHT RIVER AT SALM OH, IDAHO LOCATION. In see. 6, T. 21 N., R. 22 E., at rear of Rose ranch buildings, 300 feet below island, just above Lemhi River, and a quarter of a mile, below highway bridge at Salmon, Lemhi County. DRAINAGE AREA. -3,600 square miles (Forest Service records). RECORDS AVAILABLE. April 25, 1912, to September 30, 1916, and July 6, 1919, to September 30, 1921. GAGE. Inclined staff on left bank installed October 20, 1913; read by-E. A. and Viola Renner. Prior to October 20, 1913, gage was an inclined staff 30 feet upstream. Both gages referred to same datum but present gage reads about 0.08 foot lower.' DISCHARGE MEASUREMENTS. Made from cable 700 feet below gage. ; CHANNEL AND CONTROL. Bed composed of rock overlain with sand and gravel. Control shifts slightly. One channel at all stages. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 9,35 feet June 12 (discharge, 16,400 second-feet); minimum stage, 2.2.,feet, December 17 and January 11 (discharge, 875 second-feet). 1912-1916; 1919-1921: Maximum stage recorded that of June 12, 1921; minimum discharge recorded, 710 second-feet August 30 to September 3, December 8 and 9, 1919. ICE. Stage-discharge relation somewhat affected by ice. DIVERSIONS. A small ditch diverts from left bank between bridge and gage but its maximum capacity is less than 1 per cent of low-water flow. Numerous small diversions, principally on tributaries above. REGULATION. Nese. ----- ACCURACY. Stage-discharge relation not permanent. Two rating curyes were used; one, applicable October Ito December 10, is fairly well defined between 900 and 7,000 Second-feet, the other, applicable December 17 to September 30, is well defined between 900 and 9,000 second-feet and fairly well defined above. Prior to July 20 gage read irregularly, thereafter read to hundredth* once daily. Daily discharge ascertained by applying daily gage height to rating table and interpolating and estimating for days of no gage height, as noted in footnote to daily discharge table. Records good except for inter polated and estimated periods, for which they are fair. COOPERATION. Part of gage-height record furnished by United States Forest Service. 268 SURFACE WATER SUPPLY, 1921, PART XII B Discharge measurements of Salmon River at Salmon, Idaho, during the year ending Sept. 30, 1921 Gage Dis Gage Dis Date Made bj height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-jt. 2.52 1,110 L. L. Bryan _____ .. 6.78 8,340 20 .....do...... 2.48 1,080 26 6.58 7,810 2.38 1,030 July 8 4.59 3,990 31 .....do...... 2.37 1,000 8 __ do ...... 4.58 3,900 May 17 .....do...... 6.16 6,910 Sept. 3 ..do.. __ ...... 2.65 1,270 18 .....do...... 6.11 6,870 3 ... ..do...... 2-66 1,260 Daily discharge, in second-feet, of Salmon River at 'Salmon, Idaho, for the year ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1 ______1,290 1,250 1,140 1,020 1,140 1,600 9,660 6,600 1,880 1,250 2 _____ . ... 1,280 1,250 1,170 1,010 1,250 1,630 9,660 6,400 1,880 1,300 3...... 1,270 1,240 1,200 1,010 1,350 2,140 9,940 1,880 1,250 4 __ . __ ... 1,260 1,240 1,170 1,000 1,460 2,270 10,500 1,880 1,300 5. ____ .... 1,240 1,250 1,200 1,130 990 1,430 2,690 11,100 1,630 1,350 6 .... 1,240 1,150 1,100 976 1,400 2,840 11,400 1,630 1,300 7...... 1,230 1,140 1,060 963 1,410 2,690 12,400 1,630 1,300 8 __ .. __ .. 1,240 1,220 1,130 1,030 950 1,420 13,000 3,950 1,510 1,300 9... _ ...... 1,260 1,200 1,120 971 970 1,430 14,700 3,950 1,510 1,350 10. __ ...... 1,270 1,190 1,110 912 990 1,440 15,000 1,510 1,300 1,140 3,500 11. ______1,290 1,180 875 1,010 1,450 15, 300 1,510 1,300 12. _ . _ .... 1,310 1, i60 924 1,030 1,460 16,400 1,400 1,300 13...... 1,320 1,150 crtU 973 1,080 1,480 15,700 1,460 1,300 14 ______.. 1,340 1,200 1,020 1,120 1,490 4,290 15,300 1,460 1,300 15...... 1,340 1,250 900 1,070 1,120 1,500 14,300 o, oUU 1,570 1,350 5,600 16...... 1,340 1,300 880 1,080 1,130 1,510 13,300 1;570 1,350 17. _ . __ .. 1,340 1,340 875 1,090 1,130 1,510 7,020 11,100 1,510 1,350 18 ______.. 1,340 1,330 899 1,100 1,130 1,510 6, 810 9,110 1,460 1,350 19 ...... 1,340 1,320 921 1,110 1,140 1,490 6,720 7,670 1,460 1,400 20...... 1,340 1,310 943 1,120 1,140 1,470 6,640 7,020 2,690 1,400 1,400 21... _ ...... 1,340 1,300 965 1,110 1,140 1,120 jl.440 6,550 6,600 2,690 1,400 1,460 22. _ ...... 1,340 1,290 987 1,100 1,150 1,110 j 1,420 6,460 7,020 2,690 1,400 1,400 23... _ ...... 1,340 1,290 1,010 1,090 1,150 1,100 ! 1,400 6,370 7,900 2,410 1,350 1,460 24. ___ ...... 1,340 1,290 1,030 1,090 1,150 1,090 1,420 6,290 8,130 2,410 1,350 1,460 25..... ___ .. 1,340 1,280 1,030 1,080 1,160 1,080 1,440 6,200 8,360 2,410 1,300 1,400 26 __ . __ ... 1,340 1,280 1,030 1,070 1,160 1,070 1,460 7,450 7,900 2,410 1,250 1,350 27 ___ ...... 1,340 1,270 1,040 1,060 1,050 1,490 8,850 7,450 2,270 1,350 1,300 28 ______. 1,330 1,270 1,050 1,050 jl.150 1,030 1,520 8,850 6,810 2,140 1,350 i;soo 29...... 1,320 1,260 1,060 1,050 1,030 1,540 9,380 6,810. 2,140 1,350 1,300 30 ...... 1,310 1,260 1,070 1,040 1,030 1,570 8,360 6, 600 1,880 1,300 1,250 31 ...... 1,300 1,100 1,030 1,030 8,360 1,880 1,300 NOTE Braced figures show estimated mean discharge for periods when gage was not read. Discharge, Dec. 11-16, estimated because of ice. Discharge interpolated Oct. 9-13, 15-22, 24-26, Oct. 28 to Nov. 5, Nov. 7-12, Mr-16, 18-22, Nov. 24 to Dec. 3, Dee. 5, 7-9,18-23,25,27-29, Dec. 31 to Jan. 2, Jan. 4-7, 9,12-14, 16-19, Jan. 21 to Feb. 4, Feb. 6, 7, 9-11,13, 15-25, Mar. 22-25, 27, 29, 30, Apr. 1-3, 5, 7-15, 17, 19-22, 24, 25, 27 -29, May 1, and 19-24. -] TRIBUTARY BASINS , Monthly discharge of Salmon River at Salmon, Idaho, for the year ending Sept. 80, Discharge in second-feet Montt Run-off in acre-feet Maximum Minimum Mean October ______...... 1,340 1,300 79,900 November __ _ __ '.. ______. _ ...... 1,340 1,160 1,260- 75,000 December ______...... 1,250 875 1,040 64,000 1,200 875 1,060 65,200 February ______...... 950 1,080 60,000 1,030 1,110 68,200 1,570 1,140 1,440 85,700 May.-,. ______. ______...... 9,380 1,600 5,250 323,000 June ______...... 16,400 6,600 10,500 625,000 July...... 6,600 1,880 3,480 214,000 11,880 1,250 1,500 92,200 September ______1,460 1,250 1,340 79,700 The year. ______. _____ . __ . .... 6,400 « 875 2,530 1,830,000 SALMON RIVER AT WHITEBIRD, IDAHO LOCATION. In sec. 22, T. 28 N., R. 1 E., at highway bridge near Whitebird, Idaho County, just above Whitebird Creek and below all important tribu taries. DRAINAGE AREA. 13,600 square miles (measured on General Land Office map, edition of 1909). RECORDS AVAILABLE. August 18, 1910, to September 30,1917; October 1, 1919, to September 30, 1921. GAGE. Since September 14,1920, chain gage on handrail of highway bridge at new datum; read by R. E. and L. E. Shuck. Gage used prior to October 4, 1915, consisted of low-water section on right bank at ferry land ing and high-water section on left bank 75 feet below cable; October 4, 1915, to September 13, 1920, inclined staff in two sections on left bank beneath ferry cable, about 800 feet below present site. Temporary gage used Decem ber 31, 1916, January 1, 2, and 15-20, 1917, when stage was below inclined sections. Gages at same datum prior to September 13., 1920. DISCHARGE MEASUREMENTS. Made from gaging car suspended from ferry cable. CHANNEL AND CONTROL. Channel straight for several hundred feet above and below gage; one channel at all stages. Banks not subject to overflow. Control composed of section of river channel and large boulder riffle three- eighths of a mile below; permanent. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 21.2 feet June 9 (discharge, 88,800 second-feet); minimum stage recorded, 1.80 feet January 12 and 13 (discharge, 3,190 second-feet). 1910-1917; 1919-1921: Maximum stage recorded, that of June 9, 1921; minimum stage on November 15, 1916, when water was below gage (esti mated discharge, 2,500 second-feet). ICE. Stage-discharge relation affected by ice during severe winters. DIVERSIONS. Amount of water diverted for irrigation above station inconsid erable. REGULATION. None. ACCURACY. Stage-discharge relation permanent; not affected by ice. Rating curve well defined below 70,000 second-feet. Gage read once daily to hundredths. Daily discharge ascertained by applying daily gage height to rating table. Records good. SURFACE WATER STIPPLT^ 1921, PART XII B Discharge measurements of Salmon River at Whitebird, Idaho, during the year ending Se-pL 80,1921 Gage Dis Date Made by height charge Feet Sec.-ft. 14.61 49,200 Aug. 28 R. B. Kilgore.. ______. ______. ______. 3.09 5,150 29 . do- ...... 3.08 5,110 Daily discharge, in second-feet, of Salmon River at Whitebird, Idaho, for the year 1 ending Sept. 30, 1921 Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept, 1...... 4 960 4 Qftrt 4,770 5 RCA 4,260 7 340 19 IfVl RA QflA 31,100 7,580 4 KQO 2...... 4,770 4,770 4,960 5,550 4,100 6,190 8,810 13,300 69,000 33,300 7,580 4,590 3 . 5,150 4,590 K OCfl 6,190 11,200 32,400 4... _ .... 5,550 4,770 5,350 5,150 4,100 7,100 12,700 17,000 73,200 26,000 7,580 4,960 5 5,150 4,770 5,150 5,150 4,260 8,560 11,800 20,000 77,400 25,100 7,100 5,150 6-. ..-.. 4,960 4,770 4, 5SO 4,960 4,100 9,070 11, 200 24,300 77,400 23, 100 6,870 5,150 7... _ .... 5,150 4, 590 4,420 4,770 3,810 8,310 10,100 20,300 79,800 20,000 6,410 4,960 8 4 420 3,670 8,060 9 330 on fiflfi 85,600 19,600 6,640 4,770 9 .. __.. 5,55Q 4,590 4,420 4,960 3,540 7,340 'M10 31,500 88, 800 18,800 6,640' 4,770 10...... 5,550 4,580 4,860 6,190 3,670 6,870 8,810 32,900 84,200 17,700 6,410 5,150 11.. __ .... 6,190 4,420. 4,960 3,670 4,260 6,410 9,330 83,000 17,000 5,970 5,150 12...... 6,410 4,100 4,960 3,190 4,770 6,410 10, 700 36,100 79,200 16,300 5,970 4,770 13 ...... 6,410 4,100 4,770 3,190 6,410 13,000 79,200 15,600 6,190 4,770 14...... 6,190 4, 10Q 4,770 3,540 5,970 6,640 14, 900 42,100 76,200 14, 900 6, 870 4,770 15...... 6,190 4,770 4,100 4,420 6,190 , ISO 68, 400 14,300 4,960 16 _ .... 5,970 4,770 3,810 4,420 5,970 13,000 56,800 60,600 13, 300 6,410 4,960 17.. _ 5.760 4, ,770' 3,543 4,770 5,970 5, 970 ; 10, 100 61, 200 56,200 12,400 6,190 5,150 18 ...... 5,970 6,410 3,670 5,150 6,190 7,580 10,100 63,000 49,600 12,100- 5,970 5,150 19 . 5,550 9,330 3,670 4,770 5, 970 ' 9,330 14, 000 44,200 11,'SOO 5,760 5,150 20 ...... 5,550 10,400 4,770 4,960 4,260 9,330 14,600 68,400 41,600 11,800 5,760 5,760 21 . 5,350 9,860 4,590 6,870 4,770 8,310 14,900 63,600 39,600 10,7dO 5,550 5,970 22...... _ 5,350 7,820 4,420 4,770 4,770 7,820 16,000 60,000 41, 600 10,100 5,350 5,760 23.... 5,350 7,100 4,100 4,770 43,100 9,860 5,760 24 5,150 6,640 3,420 4,770 17 700 43,600 9,590 5,150 5,550 25 ...... 5,150 6,190 4,100 3,670 4,770 8,060 16,' 300 44,700 9,590 5,350 26...... 5,350 5,970 3,950 4,100 4,590 7,820 14,600 69,600 41,600 9,590 4,960 5,150 27. . _ 5,350 6,190 4,260 4,100 5,150 7,820 13,600 71,460 37,600 %070 4,960 4,960 28 ___ ...u*. 5,350 S,.3W> 3,9$0 4,260 6,150 7,100 13,000 66,600 36.100 8,810 5, 150 4,860 29...... '5,550 5,550 4,100 4,260 7,100 12,700 62,400 34,200 8,310 4,960 4,770 30 ..... 4,590 7,340 12,400 8,060 4,960 4,770 31. _ ...... 5,350 5,550 4,260 7 1df\ 7,580 4,770 Monthly discharge of Salmon River at Whitebird, Idaho, for the year ending Sept. SO, 1921 Discharge in second-feet Run-off in Month acre-feet Maximum, Minimum Mean 6,410 4,770 5,520 339,000 10,400 4,100 5,750 342,000 5,550 3,540 4,480 275,000 6,870 3,190 4,610 283,000 6, ]90 3,540 4,760 264,000 9,330 5,550 7,360 452.QOO 18,500 7,340 12,500 744,000 May ______. .... 75,600 12, .160 46,660 2, 870, 000 June. _..... __ -.,_- _ . _ __ __ .._ __ ,. _ ...... 88,800 32,400, 0, 100 3, 580, 000 July...... 33,300 7,580 15,700' 965,000 : 7,580- : 4-770 f 070 373,000 5, 970 ' 4,590 5,080 302, 000 The year ______...... 88,800 3,190 14,900 10, 800, 000 .TRIBUTARY BASINS in- VAl^EY CREEK, AT STANLEY, IDAHO ,v si ,, O LOCATION. In sec. 3, T. 10 N., R. 13 E., one-eighth of a mile above Valley Creek ranger station, a quarter of a mile above confluence with Salmon Rtver, three-eighths of a mile below new Stanley post office and three-fourths- of a mile above old Stanley post office, Ouster County. DRAINAGE AREA. 176 square miles (measured on topographic maps). RECORDS AVAILABLE. December 21, 1910, to October 31, 1913^, and May"2tQ September 30, 1921. , ; ' GAGE. Vertical staff installed May 2, 1921, on left bank; read by E. P. Huff man. Original staff used December 21, 1910, to May'4 19W» when ' was washed out, located at same site but at different datumf . From May 28, 1911, to October 31, 1913, used staff on right bankcat Benner's, ranch; one-half to three-fourths mile upstream. Relation between two locations nojt determined. . . - DISCHARGE MEASUREMENTS. Made from log bridge 300 feet upstream or by wading. CHANNEL AND CONTROL. Bed composed of gravel; permanent. Control well defined. Banks fairly low; left bank may be overflowed at extreme high stages. Stage of zero flow, 0.3 foot ±0.2 foot, determined July 2S, 1'92L EXTREMES OF DISCHARGE. Maximum stage recorded during period, May 2 to September 30, 4.4 feet May 29 (discharge, 1,850 second-ieet) ; minimum stage recorded, 1.25 feet September d (discharge, 100 seeond-feet). 1910-1913 and 1921: Maximum discharge that of May 29, 1921. Mini mum stage recorded, at gage located three-quarters of a mile tabpve present site and at different datum, 2.12 feet September 30, 1913 (discharge, 90 second-feet) . ICE. Stage-discharge relation affected at times during winter. DIVERSIONS. A few ranches divert water for irrigation above station. REGULATION. None. ACCURACY. Stage-discharge relation permanent. Rating curve well defined below 1,150 second-feet; extended above. Gage read to hundredth® once daily. Daily discharge determined by applying daily gage height to rating table. Records good. Discharge measurements of Valley Creek at Stanley , Idaho, during the .period May 2 to Sept. SO, 19&1 Gage Dis Gage Dis- Date Made by height charge Date Made by hejgbt ohargf? Feet Sec.-jt. Meet Sec-fa C. G. Paulsen.. ____ 2.11 426 July 23 C. G. Paulsen : ___ 1.75 253 June 4 Paulsen and Meinzer ., 3.23 1,070 .Aug. 31 Berkeley Johnson^..., 1.39 114 Tuly 5 Berkeley Johnson __ 2.16 445 272 SURFACE WATER SUPPLY, 1921, PART XII B Daily discharge, in second-feet, of Valley Creek at Stanley, Idaho, for the period May 2 to Sept. 30, 1921 Day May June July Aug. Sept. Day May June July Aug. Sept. 1 ____ 1,300 716 ISd. 106 16. ___ ..... 922 1,050 327 165 115 2...... 416 1,300 632 178 106 17 _ . _ ..... 984 922 317 150 110 3 _____ .... 523 1,440- 550 171 136 18. ______. 922 774 295 150 171 4. ___ ..... 803 1,060 469 159 123 19. ______. 922 688 273 165 150 5 ______.. 660 1,110 442 159 110 20 ____ ..... 803 688 273 165 150 6 __ . ___ . 745 1, 180 442 159 100 21...... ___ . 832 716 273 165 136 ft..-....'..:.. 660 1,180 442 153 106 22 ______. 774 803 265 165 136 8...... 892, 1 d.40 442 153 110 23...... 745 862 253 136 138 9. _____ .. 745 1,300 442 148 110 24I-...... 774 1,110 253 110 123 10....^_.____ 716 lySQO 442 148 110 25.....:...... 803 922 245 110 123 11 ___ ...... 688 1,300 416 148 110 26...... 922 803 215 110 123 12...... 660 1,300 390 148 108 27...... 1,110 774 204 115 123 13 __ ...... 688 1,300 365 148 108 28 ...... 1,500 774 197 115 118 14... ___ .... 716 1,240 365 165 106 29.. __ _ .._. 1,850 774 191 113 110 15 .. 803 1,180 341 165 120 30 __ ..... 1,050 745 181 110 108 31...... 1,180 191 108 Monthly discharge of Valley Creek at Stanley, Idaho, for the period May 2 to Sept. 80,1921 [Drainage area, 176 square miles] Discharge in second-feet Run-off Month Per square Maximum Minimum Mean mile Inches Acre-feet May 2-31...... 1,850 416 860 4.89 5.46 51,200 1,440 '688' * ' 1,040 5. 91 6.59 61,960 July...... _._...... 716 181 350 1.99 2.29 21,500 184 108 146 .830 .96 8,980 September _____ . __._____._. 171 100 120 .682 .76 7,140 The period,:...... 151,000 YANKEE FORK OF SALMON RIVER NEAR CLAYTON, IDAHO LOCATION. In sec. 20, T. 11 N., R. 15 E., at Sunbeam dam/ 350 feet above confluence with Salmon River, 3 miles west of Robinson Bar, 7 miles south of Bonanza, and 17 miles west of Clayton, Ouster County. DRAINAGE AREA. 195 square miles (measured on topographic maps). RECORDS AVAILABLE. May 3 to September 30, 1921. GAGE. Vertical staff on right bank; read by B. W. Clark and Peter Ryan. DISCHARGE MEASUREMENTS. Made from highway bridge 250 feet below gage or by wading. CHANNEL AND CONTROL. Bed composed of rock, boulders, and gravel; fairly permanent. Control 50 feet below gage well defined at low and medium stages. Although gradient is steep, control is not well defined at high stages due possibly to slight backwater effect from Salmon River when the latter is in flood. One channel at all stages. EXTREMES OP DISCHARGE. Maximum stage recorded during period May 3 to September 30, 5.24 feet at 8 p. m. June 12 (discharge, 3,360 second-feet); minimum stage recorded, 0.28 foot September 12 (discharge, 75 second-feet). ICE. Stage-discharge relation seriously affected by ice during winter. DIVERSIONS. None. REGULATION. None. TRIBUTARY BASINS 273 ACCURACY. Stage-discharge relation permanent during period of record. Rating curve well defined below 600 second-feet; fairly well defined to 2,400 se Discharge measurements of Yankee Fork of,Salmon Rwer near Clayton, Idaho, during the period May 3 to Sept. 8Q, 1921 Gage Dig- Gage Dis Date Made by- height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft 4.05 «2,190 July 24 C.G. Paulsen. _ ..... 1.04 189 July 6 1.77 433 1.42 89. £ Surface velocity measurement. Daily discharge, in second-feet, of Yankee Fork of Salmon River near Clayton, Idaho, for the period May 8 to Sept. SO, 19&1 Day May June July Aug. Sept. Day May June July Aug. Sept. 1 __ .. .. 1,860 715 144 86 '16 . _ ... 1,400 1,760 241 120 86 2 _ ..... _ . 2,040 655 152 86 17 i.4go 1,400 227 113 99'86 3. _ . _ .... 270 2,240 568 152 92 18 - 1,,580 1, 230 227 113 4. _ ...... 286 2,240 515 144 99 19.. 1,400 1,070 202 106 99 5. _ . ___ . 320 2,340 4fi« 128 99 20. .. _ 1,320 1,070 202 113 99 6.... __ .... 468 2,640 445 136 92 21 ...... %230 1,230 191 99 106 7...... 655 2, 740 422 128 99 22...... 1,070 1,320 191 99 92 8. ___ ..... 625 3,150 400 128 92 23 995 1,320 180 99 86 9. . _ .... 715 3,260 400 128 92 24.... ____ 1,320 1,400 191 99 92 10. 920 3,150 358 120 86 26 .-. 1,760 1,320 191 99 92 11-...... 1,150 3,260 339 120 75 26...... __ . 1,950 1, 070 170 99 99 12.. _ ...... 995 3,360 303 120 75 27... __ .... 2,140 1,070 170 99 92 13...... 1,070 3, 150 286 120 75 28... ___ .. 1,950 995 161 99 86 14..... ____ 1,070 9 stdn 270 120 75 29... __ .... 1,760 920 152 99 80 15. ___ ...... 1,320 2,340 255 120 92 30.-..,-. 1,670 850 152 92 80 31... __ .... 1,760 152 86 Monthly discharge of Yankee Fork of Salmon River near Clayton, Idaho, for the period May 8 to Sept. SO, 1981 [Drainage area, 195 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile May 3-31 . __ .. _ . _____ .... 2,140 270 1,200 6.15 6.63 69,000 3,360 850 1,950 10.0 11.2 116,000 July ...... 715 152 303 1.55 1.79 18,600 August ___ . ______152 86 116 .595 .69 7,130 106 75 89.6 .459 .51 5,330 216,000 SURFACE WATER. SUKPI^, ,1681, PAET XII B WARM SPRINGS CREEK AT ROBINSON BAR, NEAR CLAYTON, IDAHO LOCATION. In sec. 27, T. 11 N., R. 15 E-.y at Robinson Bar,1 half a mile above confluence with Salmon River arid 14 -milefe west of Clayton, Custer County. DRAINAGE AREA. 81 square miles (measured on topographic mapis). RECORDS AVAILABLE. April 30 to September' 30, 1921. : GAGE. Vertical staff on right bank; read b'y Llewellyn Clawson. DISCHARGE MEASUREMENTS. Made from highway bridge 600 feet below gage or by wading. CHANNEL AND CONTROL. Bed composed'of gravel and boulders; subject to slight changes. Control fairly well defined. One channel at all stages; banks high and wooded. Stage of zero flow, according to determination made May 3, 1921, at gage height -0.4 foot iO.3 fodt. EXTREMES OP DISCHARGE. Maximum stage recorded during period, April 30 to September 30 4.2 feet June 9 (discharge, 626 ^econd-feet); minimum stage recorded, 1.39 feet April 30 (discharge, 54 second-feet). lt., i ICE. Stage-discharge relation slightly affected at times by ice during'winter. DIVERSIONS.: Two small ditches divert water for irrigation above. REGULATION. None except as affected by diurnal fluctuations which are pro- wuflced during winter and spring. t ACCURACY. Stage-discharge relation subject to occasional change. Rating curve used after May 24 is well defined below 375 second-feet; extended above. Parallel curve based on one discharge measurement used prior to May 13. Shifting-control method used May 13-24. Gage read to hundredths once daily. Daily discharge determined by applying daily gage height to rating table. Records during August and September,, good; records for remainder of period fair chiefly due to diurnal fluctuations. Discharge measurements of Warm Springs Creek at Robinson Bar, near Clayton, Idaho, during the period Apr. 30 to Sept. 30 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. May 3 C. Q. Paulsen. ____ 1.52- 66.0 July 24 C. Q. Paulsen...... 1.88 123 June 3 . .do...... 2.98 347 Sept. i Berkeley Johnson ...... 1.49 77.3 July 6 Berkeley Johnson ...... 2.27 196 Daily discharge, in second-feet, of Warm Springs Creek at Robinson Bar, near Clayton, Idaho, for the period Apr. 30 to Sept. 30, 1921 Day Apr. May June July Aug. Sept. Day Apr. May June July Aug. Sept. 1 ...... 58 373 285 113 82 16...... 252 442 145 100 72 2.... _ ... 67 396 263 113 88 17 . 211 396 145 100 72 3... ___ , 67 373 263 113 88 192 306 145 100 72 4- ...... 77 373 991 106 CO 10 172 396 128 100 72 5...... 77 488 991 CO 20 ... 182 396 128 100 72 6 .. __ . 77 "580511 192 106 82 21 182 396 120 100 72 7...... 77 192 106 22...... 242 396 120 100 8 ...... 88 580 182 106 82 23.. __ . ... 242 396 120 100 72 9 ...... 100 626 182 24. 221 396 120 100 72 10...... 100 603 182 106 77 25_.. _ .... 263 396 120 100 72 11 .- 113 603 182 106 77 26..... __ . 263 396 120 94 72 12 ...... 113 603 182 106 77 27- _ .. 285 396 120 94 72 13- _ ..... 172 603 163 106 77 2g_ ...... 285 396 113 94 72 14 242 603 ,145 77 29... _ .... 263 351 113 94 72 15...... 603 1XK 106 77 30 54 263 285 113 94 72 31... _ 263 113 94 TRIBUTARY BASINS Monthly discharge of Warm Springs Creek at Robinson Bar, near Clayton, Idaho, for the period Apr. SO to Sept. SO, 1921 [Drainage area, 81 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile April 30... __ . _ . _____ . _ 54 54 54 0.667 0.02 107 286 58 176 2.17 2.60 10,800 June.. ______626 285 458 5,65 6.30 27,300 July ...... 285 113 161 1.99 2.29 9,900 August ______. _____ 113 94 102 1.26 1,45 S,270 September ______88 72 76.4 .943 1.05 4, 550 The period.. . ______58,900 GRANDE RONDE RIVER AT LA GRANBE, OREG. LOCATION. In SW. J^ sec. 31,. T. 2 S., R. 38 E., a quarter of a mile above bridge on rivef road half a mile northwest of La Grande, Union County. DRAINAGE AREA. Not measured. RECORDS AVAILABLE. February 16, 1918, to September 2, 1920; and November 22, 1920, to September 30, 1921. GAGE. Inclined gage on right!bank at end of remains of old crib, dam used November 22 to June 26; inclined gage on right bank 75 feet upstream used June 27 to September 30. The gage used February 16, 1918, to September 2, 1920, was at about the same location as the second gage used in 1921, and its datum was 1.0 foot lower than both gages used in 1921; gage reader, S. U. Evans. DISCHARGE MEASUREMENTS. Made from highway bridge below gage or by wading. CHANNEL AND CONTROL. Control is formed by remains of an old dam, fairly permanent, but not the same for both gages; channel .of gravel. EXTREMES OF DISCHARGE. Maximum stage recorded during the period November 22 to September 30, 5.5 feet March 4 (discharge, 4,350 second-feet); mini mum discharge, 6 second-feet August 30 (gage height, 1.02 feet). 1918-1921: Maximum and minimum discharge occurred in 1921. ICE. Stage-discharge relation seriously affected by ice. DIVERSIONS. None. REGULATION. None. ACCURACY. -Stage-discharge relations for the two gages not the same but permanent; affected by ice on control January 12-21 and by a temporary diversion dam August IS to Sepember 30. Rating curve for gage used November 22 to June 26, well -defined above and poorly defined below 200 second-feet; curve used June 27 to September 30 well defined above and poorly defined below 70 second-feet. Staff gage read to hundredths once daily. The gage is difficult to read above & stage of 4.5 feet; observer's readings above that point have been reduced to conform to gage readings made by visiting engineers. Daily discharge ascertained by applying daily gage height to rating tables, except August 13 to September 30 when they are applied indirectly. Records fair except for discharge above 3,000 and below 70 second-feet, which are poor. 276 SURFACE WATER, SUPPLY, 19213 PART XII B Discharge measurements of Grande Ronde River at La Grande, 'Oreg., during the period Nov. 22, 1920, to Sept. 30,'1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. Nov. 22 R. C. Briggs and Me- May 22 J. W. Bones ______460 2,820 2 25 249 2.00 213 23 .. do...... 2.17 263 July 13 ....-do...... 1.44 86 Feb. 21 D. J. McLellan...... 2.90 722 Aug. 13 .....do...... 1.25 27 Mar. 5 . _ -do...... ___ . 4.90 3,280 " Water master, Union County. Daily discharge, in second-feet, of Grande Ronde River at La Grande, Oreg,,for the period Nov. 22, 1920, to Sept. 30, 1921 Day Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept . 1 ...... 200 SOO 138 1,410 1,910 2,960 1,080 185 37 10 2. ___ . ____ ..... 193 1,910 152 1,910 2,050 2,480 1,030 164 34 10 3 _ ..... __ ...... 193 155 2,800 2,640 2,190 980 157 32 12 4 __ .... ___ ...... 190 1,650 138 4,350 2,330 2,190 1,080 141 34 14 5 ______. .... 95 1,300 138 3,450 1,650 2,050 980 136 34 19 6 ____ . _ ...... 95 800 138 2,640- 1,300 1,910 800 126 70 19 7 ______... _ . 560 81 2.330 1,030 1,910 845 115 22 16 8 ______...... 95 560 81 1,910 1,080 2.050 640 70 27 16 9 ______. _ . _ 111 325. 136 1,910 2,050 845 95 27 16 10... ______. 95 Iftrt 280 2,640 1,410 1,910 640 92 34 16 11 __ ...... 126 160 560 1,650 1,530 1,910 640 92 31 14 12...... 129 1,650 1,240 1,910 1,910 490 85 29 14 13 _____ ...... 120 1,910 1,190 2,050 1,910 458 85 27 16 14 ___ .... _____ . 75 2,800 1,190 1,910 2, 190 425 76 22 16 15 __ . _ . _ .. _ .-.. 75 1,910 1,080 1,780 2,050 375 76 34 17 16 _ .... __ ..... _ . 78 1,300 1,650 1,530 2,640 375 62 40 20 17 . _ . __ ...... 120 140 800 2,330 1,080 2,640 375 65 34 22 18...... _ ...... 126 800 2,800 1,530 2,960 375 62 47 22 19.. _____ ...... 111 935 2,800 1,780 2,800 325 62 28 29 20- ___ ...... 97 845 2,330 1,910 2,800 280 58 22 42 91 95 680 1,910 2,050 2,800 237 54 22 44 22 __ .. _____ . . 302 95 129 425 1,910 2,480 2,800 237 50 22 46 23 ______...... 280 8Q 126 640 1,910 2,640 2,800 237 50 17 47 24 __ .... ___ ...... 200 83 182 640 2,050 2,480 2,800 280 50 13 47 25 ______...... 200 95 218 640 2,050 2,190 2,330 237 52 12 35 26 _ ..... __ .... _ . 302 95 218 640 1,910 1, 910 2,190 200 52 17 35 27 __ .. ___ ..... _ . 375 95 200 640 1,650 1,780 1,910 213 50 14 34 28 _ .. ___ ...... 302 126 182 1,080 1,530 3,450 1,650 78 52 14 28 29.... ______. ... 237 325 126 1,910 3,120 1,410 159 50 12 28 30...... __ .... 237 720 138 1,780 2,800 1,300 164 40 6 28 31 ___ . __ ...... 890 126 1,780 1,190 40 8 Discharge interpolated Aug. 11 and 12. Monthly discharge of Grande Ronde River at La Grande, Oreg., for the period Nov. 22, 1920, to Sept. 30, 1921 Discharge in second-feet Month Run-off in Maximum Minimum Meaa acre-feet November 22-30 __ : _ I _ ..,, ...... 375 200 271 4,840 890 75 165 10, 100 2,480 126 444 27,300 2,800 81 726 40,300 4,350 1,080 2,060 127,000 April ___ . ______. ______. ______. 3,450 1,030 1,950 116,000 2,960 1,190 2,220 136,000 June. __ __ _.... ______..... 1,080 78 503 29,900 July ...... 185 40 82.1 5,050 70 6 26.5 1,630 47 10 24.4 1,450 500,000 BASINS CLBARWATER RIVER AT KAMIAH, IDAHO LOCATION. In sec. 1, T. 33 N., R. 3 E., at former toll bridge in Kamiah, Lewis County, 6 miles below mouth of South Pork of Clearwater River. DRAINAGE AREA. 4,850 square miles (measured on General Land Office map, edition of 1909). RECORDS AVAILABLE. August 20, 1910, to September 30, 1921. CTAGE. Chain gage attached to downstream handrail of bridge; installed May 30, 1911; read by Mrs. Louise McLaughlin. Prior to May 30, 1911, gage painted on lower steel caisson of first pier from left abutment at datum 0.06 foot lower than that of present gage. DISCHARGE MEASUREMENTS. Made from downstream side of bridge. CHANNEL AND CONTKOL. Bed at gage and control consists of heavy boulders and gravel; control practically permanent. One channel at low water, two channels between gage heights about 5 and 8 feet, and one channel above gage height 8 feet. EXTREMES of DISCHARGE. Maximum stage recorded during year, 15.3 feet on May 20 (discharge, 69,700 second-feet); minimum stage recorded,2.4 feet on September 2 (discharge, 1,210 second-feet). 1910-1921: Maximum stage recorded, 16.1 feet May 26, 1913 (discharge, 76,600 second-feet); minimum stage occurred in December, 1919, when stage-discharge relation was affected by ice, discharge certainly lesa than 500 second-feet). ICE. Stage-discharge relation affected by ice during severe winters. DIVERSIONS. Several small ditches divert water for irrigation above station. REGULATION. None. ACCUKACY. Stage-discharge relation changed slightly May 20; not affected by ice. Rating curves fairly well defined. Gage read to tenths once daily. Daily discharge ascertained by applying daily gage height to rating table. Records good. COOPERATION. Gage-height record furnished by United States Weather Bureau. Discharge measurements of Clearwater River at Kamiah, Idaho, during the year ending Sept. SO, 1921 Gage Dis Gage Dis Date Made by height charge Date Made by height charge Feet Sec.-ft. Feet Sec.-ft. 8.22 17, 300 July 10 5.22 6,230 23 . _ .do...... _ .. 8.33 19,000 Aug. 31 2.53 1V360 My 10 __ .do...... 5.26 6,540 Sept. 1 ... -do ...... 2.52 1,330 278 SUBFACE WATE& SUPPLY, 1921, PAST XII Daily discharge, in second-feet, of Ctearwafe? River at Kamiah, Idaho, for the y ear ending Sept. SO, 1921 Day oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. !..___ __ . 3,840 4,280 4,750' 7,460 3,230 8,720 10,«00 17,509 45,500 10,800 2,600 1,310 2...... 4,060 3,840 4,750 6,310 3 f\Af\ 10,100 12,100 18,500 47,800 10,400 2,290 1,2H> 3- __ .... 6,590 3,840 4,750 Q AAA 3 OQfl g 770 17,500 91 *7flfl 48,600 9,700 2,150 1,310 4.. ____ . 8,390 3,840 4,750 9,060 3,230 12,500 16,600 21,100 51,800 9,030 2,010 1,750 5. ___ .... 6,870 3,430 4,510 7,460 3,230 16,609 15,200 24,600 51,000 8>700 2,150 1,630 6.. ___ ... 6,590 3,840 4.060 7,160 3,046 14,700 13,400 31,300 50,200 8,060 2,150" 1,630 7...... 7,160 3,430 3,430 6,040 2,680 18s 000 12,100 38,000 48,600 7,450 2,010 1,520 8.. ____ . 9,410 3,430 4 060 5,250 11,300 10,900 43,600 47,800 7,150 2,010 1,410 9.. __ .... 7,760 3,840 4^280 5,510 2,860 10,500 10, MO 40,000 43,900 6,860 2,010 1,750 10.. ___ .. 6,590 3,230 3,840 5,250 3,040 9,770 10,900 40,000 38,600 6,580 2,010 1,750 11--..-^ 6, 870 : 2 flQrt 4,280 6,590 9,060 11,300 tfO Qftft ' 37,900 6,030 1,880 2,010 12...... 6,870 2,860 3,840 3,230 8,070 8,390 13, 800 39,300 36,400 5.510 1,880 1,750 13. __ .... 7,460 2,680 3,840 4,060 8,390 7,760 18,500 40,000 27,400 5,280 1^880 1,630 14...... 7,160 3,230 3,630 4,750 9,060 7,760 19,000 44,400 28,800 5,260 1,880 1.52O 15.. ___ .. 7,460 3,230 3,040 4,510 9,060 7,160 18,000 48,900 28,800 4,780 1,880 1,630 16... __ ... 6,870 3,040 , 2, 510 4,280 6,870 17,000 54,400 24,300 4,330 1,880 X 630 17...... 5,770 3,430 3,630 4,060 7,460 10,900 17,500 54,400' 20,200 4,330 1,884' 1,630 18...... 5,510 4,750 3,840 3,840 6,310 18,000 18,500 61,000 19,200 4,110 1,750 1,520 19...... 5,,250 6,310 3,430 4,510 6,590 19,000 19,000 66,200 17,800 3,900 1,630 1,520 20.. ___ .. 5,250 s 73n 8,230 '4,060 6,590 15,600 21, 700 69,700 17,800 3,900 1,630 1,520 211.... . 5,000 7, 460 3,840 6,310 13,000 20,000 65,300 16,8dO 3,490 1,520 2,15ft 22...... 5,fl60 6,690 | 3,230 3,630 11,700 25,200 61,000 17,800 3,490 1,520 2,150 23... ___ .. 4,510 6.870 2,860 3,040 5,250 11, 700 35,200 60,100 18,200 3,300 l|'620 2,290 24...... 4,510 2,860 i run 5,770 12,500 30,000 57,600 16,809 3,120 1,410 2,600 25...... 4,280, '5,770 q oon 3,230 6,040 13, 000 25,200 59,300 16,800 3,120 1,410 2,290' 26...... 4..510 S, 7?0 3,040 3,430 6,310 13,000 22,800 63,600 15,900 3,300 1,410 2,i8O 27...... 6,040 5,770 3 040 3,430 6,310 11,300 20,600 62,700 13,600 3,490 1,410 1.88O- 28... _ .... 4,510 5,770 3,430 7,160 10,500 20,000 48,600 12, 700 3,128 :l,410 1,880 29... __ ,. 4,750 5,510 4, 510 3,430 10,500 19.500 40,900 11,900 2,770 1,520 1,750 30...... 4.510 5,000 3,040 10,500 16,600 41,600 11,500 2, "600 1,520 1,75O 31J.. ___ .. 4,280 8,390 3,230 10, 100 41,600 2,600 1,310 Monthly discharge of Clearwater River at Kamiah, Idaho, for the year ending Sept~ 30, 1921 [Drainage area, 4,850 square miles] Discharge in second-feet Run-off Month Per Maximum Minimum Mean square Inches Acre-feet mile October __ . ______'_T___ ... 9, 410 3, 840 5,920 1.22 1.41 364,000 November . 8,720 2,680 4,620 .953 1.06 275,000 December ____ ...... 8,390 2,510 3,870 .798 .92 238,000 January ______. ... 9,060 3,040 4,740 .977 1.13 291,000 Feburary ______. __ ... 9,060 2,510 5,540 1.14 1.19 308,000 March ______. 19,000 6,870 11,500 2.37 2.73 707,000 April ______. _ ...... 35,200 10, 100 18,000 3.71 4.14 1, 070, 000 May ______.... 69,700 17,500 45, 800 9.44 10.88 2, 820, 000 June ...... 51,800 11,500 29,500 6.08 6.78 1, 760, 000 July .... __ ...... 10, 800 2,600 5,370 1.11 1.28 330,000 August __ .. __ ..... 2,600 1,310 1,790 .369 .43 110,000 September ______...... 2,600 1,210 1,750 .361 .40 104,000 The year ...... 69,700 1,210 11,600 2.39 32.35 8, 380, 000 STJBBACE WAT1K SUPPLY^ 1921, PART XII-r-B $79 MISCELLANEOUS MEASUREMENTS Discharge measurements of streams in the Snake River basin at points other than regular gaging stations, made during the year ending September 30, 1921, are listed in the following table: Miscellaneous discharge measurements in Snake River drainage basin during the year ending Sept. 30, 19® 1 ,; Tributary to or di Qage Dis Date Stream verting from Locality height charge Feet Sec.-/*. Oct. 5 MenorsFerry , Jackson Hole, 1.81 636 Wyo. July 26 .do...... do. Sec. 32, T. 9 S., R. 18 E., 4fifl one-half mile below Twin Falls, 4 miles north of :- Kimberiy, Idaho. Aug. 10 do. _ , :...... -do ...... __ do __ . __ ... 424 17 _ .Jdo,,. __ .. __ .. do ...... 429 8 100 yards below Two Ocean 31.8 Creek, Idaho. 2 do. _ ...... do ...... Midway between Two . 95 16.5 Ocean Lake and mouth, Idaho, 4 do ... do...... do ...... 1.16 19 6 4 do ...... do ...... do ...... 1.15 19 4 5 do...... do do ...... 1.06 17.9 8 .. do ... . do _ ..do - _ .... _ . 1.38 26.0 12 -do .do .... do 1.34 24.7 8 do :do At mouth, Idaho ______TO o At mouth, near Pincock 16 9 Hot Springs, Idaho. do...... do . .do...... 8.3 Aug. 21 do ...... do do- ... 5.45 July 15 Teton River ...... Above Teton mill, Teton, .54 89.3 Idaho, 28 ..... do ; ..... do... do .60 91 7 Aug. 28 do .. __ . do .do-...... ,.. .86 91.6 July 28- Between Shelley and Por- 24 g 29 flow. terville gaging stations, Idaho . do...... -do .do __ __ . 146.0 22 Aug. 2, 3 Between Pwterville and . Ill flow excepting Blackfoot gaging stations, Blackfoot River. Idaho, 30 . _ .do..... ______do ...... 154 11 SE. M see. 21, T. 8 N., It. 19 7 36 E., at railroad bridge at Camas, Idaio. - Apr. 25 do- ...... do ...... NE; -%?*&' 6,"T. 7 N., R. 36 , 111 E., at Wood's ranch, 5 miles northwest of Hamer Idaho, do...... do...... do ...... 161 Apr. 18 do...... do ...... NW. H sec. 36, T. 7 N., R. 133 35 E-, at highway bridge, , 5 miles southwe'lt ofHa- mer, Idaho Aug. 10 ..... do ...... do...... do ...... 34.3 Sec. 19, T. 13N..R.40E., 1 90.6 mile below mouth of can yon, 6 miles northeast of j^flgore, Idaho. 9 4 miles below hda'd; ditci diverts from right bank of , Camas, Creek in seq.21,.T. 12 N:,R. 38 E:, 10 miles - < east of Spencer, Idaho...... do J . .. .do ... - 13.4 do...... 31.3 ditch. diverts from right bank of Camas Creek in sec. 36, T.12N., R. 38 E., Smiles south of Kilgore, Idaho. June 16 do. .. _ do ...... do - . . . 2^.3 May 6 Woods Woodie ditch. . do ...... __ . 1 mile below head; ditch, di verts from right bank .of, Camas Creek in sec. i26, T.11N., R.38E., 10 miles south of Kilgore. Idaho, June 16 do. ___ ...... do .... __ ...... do ...... 1.8 280 SUKFACE WATER SUPttY, "19&1, .PART Miscellaneous discharge measurements in Snake Rive? arhin&Qe* basin during the year ending Sept. 80, 1921 Continued Tributary to or di Locality ' ' ' ' ' ' Gage Dis Date Stream verting from height charge Feet Sec.-ft. a A a ditch. Camas Creek in sec. 19, T. 11 N., R. 39 E., Smiles south of Kilgore, Idaho. July ' 3 .....do ...... 500 feet below head; ditch A O diverts from right "bank of Camas Creek in sec. 17, T.10N., R. 38 E., 16 miles east of Dubois, Idaho. 3 do .. - Diverts from right bank of 2.& Camas Creek in sec. 4, T. 9 N., R. 37 E., 11 milesnorth- east of Oamas, Idaho. 3 do ...... Diverts from right bank of 9 n> Camas Creek in sec. 9, T. 9 N., R. 37 'E., 10 miles northeast of Camas, Idaho. 4 .....do .... 60 feet below head; ditch di verts from right bank of Camas Creek in sec. 17, T. 9 N., R. 37 E., 9 miles northeast of Camas, Idaho. 4 . _ .do __ .. ___ .... 90 feet below head; ditch 7 > diverts from right bank of Camas Creek in sec. 25, T. 9 N., R. 36 E., 6 miles northeast of Camas, Idaho. 4 Hoflman ditch ...... do... ____ ...... 120 feet below head; ditch 1.S diverts from right bank of Camas Creek in sec. 34, T. 9 N., R. 36 E., 4 miles north of Camas, Idaho. Apt. 24 Warm Spring Slough.. SW. % sec. 16, T. 7 N., R 21. r 36 E., one-fourth mile above Sandhole Lake, 2 miles northwest of Hamer, Idaho. Aug. 10 ....do..... _ .. _ ...... do...... _ .ao ...... 23.9- June 9 Rays Lake Canal Diverts from Rays I/ake in 8.* Co.'s pump canal. SE. A1 sec. 30, T. 7 N., R. 36 E., 4 miles south-west of Hamer, Idaho. July 27 ....do...... dp ...... do __ . Aug. 11 . do..:.. _ . _ . _ ....do ...... 4.8. June 23 Hamer feeder pump Camas Creek ...... Diverts from left bank of Ca 18.2 canal. mas Creek in NW. % sec. 36, T. 7 N., R. 35 E., M mile below Rays Lake and 5 miles southwest of Ha mer, Idaho. July 27 _ .do..;...,...... ,...... do...... do ---- - ; - 18.3: June 9 Owsley-Magill pump ....do ...... Diverts from left bank of 7.3. canal. Camas Creek, in NW. H sec. 3, T. 6 N., R. 35 E., 7 miles southwest of Ha mer, Idaho. July 27 _ .do ._ _._._.__ .... do- ...... - .....do ...... 6.4 Sept. 9 ....do.:-.: ...... do ...... __ .do .. __ ...... 6 4< Aug. 18 Dead Line Lake outlet- NW. X sec. 26, T. 7 N., R. . 6.6 35 El, 6 mile's southwest of Hamer, Idaho. June 23 Wyley-Barnard pump Diverts from Mud Lake in 6.& canal. NE. M sec. 9., T. 6N., R. 35 E., 8 miles southwest of Hamer, Idaho; 9 Melton pump ditch...... -do...... 5.2: NE.J^sec. 13, T.6N., R. 34 E., 11 miles southwest of Hamer, Idaho. Aug. 5 ....do...... do...... do i - . _.. -. 4.e June 8 First Owsley segrega . do...... Diverts fiom MM Lake oh 62.1 tion pump canal. line between sees. 23 and 24,T.6N.,R.34E.,imile east of Terreton, Idaho. 13 ....do..... _ ...... do ...... __ .do .. . _ . _ . _ 120 1! MISCELLANEOUS MEASUREMENTS Miscellaneous discharge 'measurements in Snake'-River drainage basin during-iKe year ending Sept. SO', 19B1 Continued Gage' Tributary to or di- .4 Dis Date Stream verting from Locality aeight charge Feet Scf.-ft. July 18 Diverts trom Mud Lake on 107 , gation pump canal. line between sees. 23 and 24,T.6N.,R.34E.,lmile east of Terreton, Idaho. Aug. 6 do...... do ...... 106 16 dO _.w . do ...... do ...... i. . 117 TQ do ....do ...... do ...... ,.- 95.8- 19 .... do ...., ....do .. .. . _ do ...... 112 19 .... do...... -do ...... 129 19 .... do...... do ...... 28.6 __ do ... . .do ...... 47.9 do...... do...... -dO ...... 64.5 July 5 do...... Diverts from Mud Lake in 3.0. ditch. SE.Msee. 15. T. 6N-, R- 34 E., one-half mile north of .Terreton, Idaho. May 14 Jensen pump ditch ...... do ...... ,. Diverts from Mud Lake in 1.5 SW.#SBc.i4,T.6 N, r &. 34 E., one-naif mile north of Terreton, Idaho. do .... do...... _... do., . . 2.0 Alicr 1Q .. .do...... Diverts from Mud Lake in 3. ft SE.M sec. 15, T.6 N..R. 34 E., one-fourth mile w«st of Terreton, Idaho. Aug. 1 do "...... do ...... do ...... 3. ft 20 ..do...... do...... ,...... Miscellaneous discharge measurements in Snake River drainage basin during'the year ending Sept. SO, 1921 Continued Tributary to or di Gage Dis Date Stream verting from Locality height charge Pea Sec.-ft. July 14 About sec. 15, T. ION., R. 1.95 64.8 25 E., one-eighth mile be low lower end of pipe line, 1 mile below Dry . Creek dam, Idaho. - Sept. 11 .....do...... do ...... 1.08 22.0 Apr. 13 Wet Creek...... Little Lost River . . ... About sec. 7, T. 9 N., R. 1.83 20.7 25 E., one-fourth mite above Corral Creek, 6 mites above mouth, Idaho, OQ do-.. __ ,... _ ...... do ...... do -...... _____ . 1.57 16.6 do...... do __ . __ ...... do .. __ . a...... 3.01 53.8 July 13 '.....do 1 _ ___ . .... ,do ... . do ...... _ ..... 1.89 25.2 QA do... 'j ..... do .... 1.60 619.6 Aug. 1 do- .. ., U do ...... do...... 1.73 621.5 Sept. 11 do. , :.--do ...... __ do ... ______. ..'.*. 1.66 17.9 At mouth, about sec. 8, T. 3.4 9 N., R. 26 E., 30 miles northwest of Howe, Idaho. 28 do.-...... ,.. do . . -.,-- . .... 3.6 July 13 do- ..... :...... dO ..do ...... __ ..... 3.6 Sept. 11 ..... do-...... do...... do ...... _ . __ . ... 3.1 11 ... -do . ___ ...... At mouth, about sec. 8, T. 15.6 9 N., R. 26 E., 30 miles northwest of Howe, Idaho. 12 At mouth, about sec. 34, T. 2.6 PN., R. 27 E., 24 miles northwest of Howe, Idaho. 12 do ...... At mouth, about sec. 34, T. 3.6 9 N., R. 27 E., 24 mites northwest of Howe, Idaho. July 14 At mouth, 18 miles north 25.5 west of Howe, Idaho...... do ...... do ...... 27.6 12 .....do...... _ ...... At mouth, about 15 miles 6.6 northwest of Howe, Idaho; July 14 do ...... Diverts from right bank of 35.9 sion eanal. Little Lost River, sec. 11, T.6 N., R. 28 E., 8 miles northwest of Howe, Idaho. Sept. 12 do...... Jones ranch, 9 miles north 2.6 west of Howe, Idaho, Apr. 10 Chilly Bridge, 1 mile south 12.3 east of Chilly, Idaho. i July 1 U. C. Canals...... About sec. 32, T. 8 N., R. 27.1 23 E., 7J4 miles north west of MacKay, Idaho. Qn north side of Snake Inflow, River from Milner to Bliss, Idaho. (See pp. 283~28fl.) Sec. 26, T. 46 N., R. 63 E., 20 Mount Diablo base and meridian, one-half mite below Mountain City, Nev. 24 Below diversions 1J4 miles 7 above confluence with Owyhee River and 9 mites east of Mountain City, Nev. 24 South Fork of Qwy- Sec. 5, T. 42 N., R. 52 E., 1.5 hee River, at Deep Creek stage sta- :- tion, Nev. . ; 24 ..._-do-...... ^...- .....do ...... Sec. 5, T. 42 N., R. 51 E., 1.6 at bridge 7 miles west of Deep Creek on road to I. L. ranch, Nev. 24 Bull Run Creek __ ... __ do __ . _____ . Sec. 36, T.44 N., R. 52 E., 10 .one-fourth mile east of Aura, Nev. 24 .....do __ ...... Sec. 15, T. 43 N., R. 52 E., 11 at bcidge on stage road 4 miles north of Deep Creek, Nev. 24 Horn canal ______Bull Hun Creek...... Sec. 36, T. 44 N., R.52.E., 3.3 at head of canal one- fourth mile east of Aura, Nev. MISCELLANEOUS MEASUREMENTS 283 Miscellaneous discharge measurements in Snake River drainage basin during the year ending Sept. SO, 1921 Continued Tributary to or di Gage Dis Date Stream verting from Locality height charge Feet Sec.-ft. June 21 South Fork of Malheur 10.6 River. Riverside, Oreg. July 21 91.3 River. " in sec. 27, T.9N.,R.7E., Idaho Sept. 8 do...... ,. .do...... do...... 43.9 May 11 677 canal. power plant in sec. 30, T. 7N., R.2E., Idaho. Nov. 22 Sec. 34, T. 18 N., R.1W., at 1.79 171 Wagon bridge at Starkey, Idaho. July 30 9.8 River. above the Lost Valley reservoir, Idaho. 28 24.8 ser River 15 N., R. 1 W., Idaho. Aug. 30 Salmon River __ _ __ Snake River ____ ._ 1.45 217 Fourth of July Creek in SE. ]4 sec. 8, T. 8 N., R. 14 E., Idaho. 30 Lake Creek __ ._ .... E. Y-i sec. 26, T. 10 N., R. 2.82 6 13 E., one-fourth mile be low Little Red Fish Lake, Idaho. Sept. 7 Fir Creek __ __ 12.6 mouth in sec. 32, T. 13 N., R. 10 E., Idaho. May 22 Catherine Creek.. . 5.02 1,110 discontinued gaging sta tion, Oreg. 17 Wallowa River . _ __ - ..do...... 46.6 house of Enterprise Elec tric Co. at Wallowa, Oreg. Principal springs and inflow on north side of Snake River from Milner to Bliss, Idaho Tributary to or di Gage Dis Date Stream verting from Locality height charge 1917 Feet Sec.-ft. Sept. 17 NE. Y± sec. 4, T. 10 S., R. 18 C12.7 E., Idaho. Oct. 9 .... .do.... ci6. 5 outlet in sec. 20, T. 9 S., R. 17 E., Idaho. 9 .....do.. _ ...... do...... c5.5 outlet in sec. 14, T. 9 S., R. 16 E., Idaho. 9 .... .do ....._...... About sec. 18, T. 9 S., R. clO.9 16 E., Idaho. 11,12 Crystal Springs ...... -do...... Sec. 7, T. 98., R.16E., and ...... c536 sec. 12, T. 9 S., R. 15 E., Idaho, 1919 Sept. 22 do...... do. : -.---do...... c475 1918 .." do...... cd322 T.9 S., R. 15 E., Idaho. 1917 . -do...... do...... ce242 R. 15 E., Idaho. 1919 Sept. 23 .....do...... __ ...... do...... do--...... c/250 14234 2i 284 SURFACE WATER SUPPLY, 1921, PART XII B Principal springs and inflow on north side of Snake River from Milner to Bliss, Idaho Continued Tributary to or di Gage ' Dis Date Stream verting from Locality height charge 1920 Feet Sec.-ft. Sept. 16 252 R. 15 E., Idaho. 1917 Sept. 13 do Fording place in sec. 3, T. d28 98., R. 14 E., Idaho. 1918 .....do... .-. - -do...... do ...... c!30 1919 Sept. 12 do ..do ___ - .do- - ...... cl28 1920 Sept. 17 ..do ...... do...... _ .do __ . _ cl22» 1917 . .do. .. __ ...... C0124 R. 14 E., Idaho. 1919 . -do. do. _ ...... do ...... cM08 1920 .... . do ...... do ...... do .. cl!7 1917 Oct. 13 do ell. 8 8 S., R. 14 E., Idaho. 1919 Sept. 19 do.. ..- ..-.do ...... -do .. . . "8.5 1917 Sept. 14 Box Canyon _...._ _ _ .--do Sec. 28, T. 8 S., R. 14 E., % ...... "341 mile above mouth, Idaho. 1918 do - do ...... do ...... c338 1919 do . . do . ... -do ... «302 1920 Sept. 15 .do . _ .... -do ...... do-... «308 1921 do ..do .. _ .do 356 Oct. 13 Springs ______.... do Sec. 28, T. 8 S., R. 14 E., H ...... c«90 mile below Box Canyon, Idaho. 13 do...... At outlet, in sec. 20, T. 8 S.; C61.5 R. 14 E., Idaho. 1919 Sept. 19 do. do .....do ...... «61.0 1917 . .do .. _ . .... C13.2 Ferry in sec. 20, T. 8 S., R. 14 E., Idaho. Sept. 15 Sand Springs...... -do ...... Sec. 17, T. 8 S., R. 14 E., ...... c/80.4 Idaho. 1918 Apr. 8 do do .. do _ ..... c*81.9 __ .do do do...... cJ94.S 1919 .do .do ...' . do _ ....- ___ ... _ CTO75. 9 Oct. 21 .... .do...... do _____ . _ .do __ _ _ . __ . c71.9 * \ 1920 Sept. 21 ..do ..... do do .- c»80.7 1921 July 13 do .... -do ...... - do 66.5 1919 Oct. 19 ..... do C66.6 R. 14 E., Idaho. MISCELLANEOUS MEASUREMENTS 285 Principal springs and inflow on north side of Snake River from Milner to Bliss, Idaho Continued Tributary to or di Gage Dis Date Stream verting from Locality height charge 1917 Feet Sec. -ft. Oct. 13 Sec. 17, T. 8 S., R. 14 E., c«4. 2 Idaho. Sept. 15 Thousand Springs ... ..do...... Sec.8,T.8 S., R. 14 E., Idaho C42.0 (west channel). 15 . .do ...... do -.--. .. c587 (east channel). 15 do .. «629 west channel or flow avail able for power plant, 1918 Idaho. Sept. 19 ...-do ...... do ...... do - «656 1919 ..... do ...... do ...... '...do 0.67 C515 1920 ..... do...... do...... do..... 4.44 ' o864 1917 May 19 __ .do ____ ...... Sec. 8, T. 8 S., R 14 E., .62 d53 Idaho, ..do ...... do...... do .84 «160 1918 Sept. 19 .....do . .... __ .do ____ ...... do 2.18 cl86 1917 Sept. 17 Thousand Springs Below power plant, sec. 8, cl57 (west channel). T. 8 S., R. 14 E., Idaho. 1921 July 11 .....do...... do ...... do P72.7 1917 Sept. 17 $4 mile above Bickel ranch «112 house, abont sec. 8, T. 8 1921 S., R. 14 E., Idaho. July ia do .....do...... do 114 1917 Sept. 17 do. . __ . . Total flow of ponds and C984.5 springs on Bickel ranch, sec. 6, T.8 S., R. 14 E., 1921 Idaho, July 13 .....do ...... do . .do...... - J-87.6 1917 Sept. 17 Riley Creek...... do...... Sec. 6, T. 88., R. 14 E., ...... c*62.4 Idaho. 1921 July 13 . .do. __ .do ...... do ...... 45.9 1917 Sept. 17 Kearns Springs...... do - _ ...... Sec. 36, T. 7 S., R. 13 E., ...... C91.8 Idaho. 17 .....do ...... State highway bridge on c«15» Bliss-Hagerman road, 1919 Idaho, Sept. 24 do .....do.. _ . .. do .... 0128 1917 Sept. 17 __ .do ...... Between Billingsley Creek «6. 5 and Big Wood River, 1919 Idaho. Rant 9 A...... do*...... Miscellaneous flow of small c«20.5 springs between Hagar- man and mouth of Big 1913 Wood River, Idaho. Aug. 28 ..... do...... 400 feet above upper dam, 1,060 sec. 25, T. 6 S., R. 13 E., 1917 Idaho. Sept. 18 .....do...... ___ .... do __ __ i. ....,.do ...... - c«600 1920 .....do.... __ ..... _ .....do ..... _ .. __ . 621 __ do ...... do ...... do ...... 608 Aug. 9 .....do.. __ ...... do...... do .. ____ ...... 642 286 SURFACE WATER SUPPLY, 1921, PART XII B Principal springs and inflow on north side of Snake River from Milner to Bliss, Idaho Continued Tributary to or di Gage Dis Date Stream verting from Locality height charge 1921 Feet Sec. -ft. July 12 400 feet above upper dam, 621 sec. 25, T. 6 S., R. 13 E., 1919 Idaho. Sept. 26 .. do...... do ...... Above power plant tailrace, c496 sec. 34, T. 6 S., R 13 E., 1920 Idaho. Dec. 18 Fish Creek ______Little Wood River .... Sec. 15, T. 1 N., R. 22 E., at 0.11 2.0 dam of Atlas Develop ment Co., 10 miles north 1921 east Of Carey, Idaho...... do...... do...... do _.._._._ . .-_ .45 17.9 1917 Sept. 18 c533 sion dam and mouth in sees. 26, 26, 35, 36, T. 6 S., 1921 -R. 13 E., Idaho. July 12 Cove Creek... __ ...... do ...... Sec. 25, T. 6 S., R. 13 E., ...... 40.2 Idaho. 1919 Sept. 26 Malad flume ...... do...... Above power plant, diverts c649 from Big Wood River in sec. 25, T. 6 S., R. 13 E., 1913 Idaho. Aug. 28 King Hill ditch...... Below power plant, diverts 201 in sec. 27, T.6S., R. 13 E., 1917 Idaho. «<=33 between Big Wood River 1919 and Bliss, Idaho. Sept. 24 .....do...... do...... do ...._-. c»14.8 1921 July 11 Woodworth Springs ... ..do...... §y> miles below Hagerman, 7.7 approximate sec. 27, T. 6 S., R. 13 E., Idaho. 11 -....do ...... 2.0 Idaho. " Estimated. b Furnished by C. E. Tappan. c Measurements made by employees of Twin Falls North Side Land & Water Co. <* Includes 125 second-feet diverted. «Includes 14 second-feet diverted. /Includes 10 second-feet diverted. g Includes 4 second-feet diverted. ft Includes 3 second-feet diverted. i Estimated 120 second-feet inflow between measuring section and mouth of canyon. ./Includes 14.2 second-feet diverted. * Includes 3.0 second-feet diverted. ^Includes 11.2 second-feet diverted. TO Includes 12.2 second-feet diverted. »Includes 8.0 second-feet diverted. "Includes a number of springs entering below power plant. p Excluding flow fr om waste gates at the end of power-plant flume. ? Includes 15.5 second-feet estimated. r Includes 16.2 second-feet estimated. * Excluding 3.0 second-feet estimated diversions above. 'Excluding 75.2 second-feet measured diversions above. a Spring flow only. INDEX A Page Page Accuracy of data and results, degrees of 4-5 Billingsley Creek, Idaho, discharge measure Acre-foot, definition, of______2 ments of...... * 285 Alder Creek near Mackay, Idaho..__.... 132-133 Birch Creek near Reno, Idaho._-_____ 96-98 Antelope Creek near Darlington, Idaho_ 133-134 Blackfoot and Porterville gaging stations, Appropriations, record of______1 Idaho, diversions from Snake Arrpwrock, Idaho, Boise River at Dowling River between.__ 21 ranch, near______.__... 217-219 Blackfoot, Idaho, Fort Hall lower canal Moore Creek near _._.______223-225 near__ ..._____....___ 87-88 Arrowrock reservoir at Arrowrock, Idaho_. 216 Fort Hall upper canal near... 85-87 Ashton and St. Anthony gaging stations, Snake River at PdrtervDle Bridge, """ Idaho, diversions from Henrys near...... 19-21 Fork between______48-49 Snake River near ..__.... . 22-23 Ashton, Idaho, Henrys Fork near..____ 46-48 Blackfoot-Marsh reservoir near Henry, Idaho 73 Aura, Nov., Bull Run Creek at...... _.._ 282 Blackfoot River above reservoir, near Henry, Horn canal at....______.__ 282 Idaho-.- - 71-72 near Blackfoot, Idaho______77-79 B near Henry, Idaho______. 74-75 near Shelley, Idaho__...__...... 76-77 Badger Creek near Howe, Idaho______282 Blaine County diversion canal near Howe, Baldwin, G. C., and assistants, work of..... 9 Idaho... .. 282 Banbury Springs, Idaho, discharge measure Blaine, Idaho, Camas Creek near_____ 192-193 ments of...______284 Blind Canyon, Idaho, discharge measure Banks, Idaho, South Fork of Payette River ments of...._.- 284 near ______244-245 Bliss Springs near Hagerman, Idaho 286 Beaver Creek at Camas, Idaho______94-95 Blue Lakes outlet near Twin Falls, Idaho.. 156-161 at Dubois, Idaho______92-93 Blue Springs, Idaho, discharge measure Bellevue, Idaho, Big Wood River at Glen- ments of--- . 284 dale Bridge, near______174-175 Boise River at Dowling ranch, near Arrow- Big Wood River near______176-177 rock, Idaho..- _ 217-219 Big Lost River at Chilly, Idaho___ _._. 282 at Notus, Idaho- 219-220 at Howell ranch, near Chilly, Idaho... 102-104 near Twin Springs, Idaho.-______214-215 at Leslie, Idaho-... 117-119 South Fork of, near Lenox, Idaho--... 221-222 (back channel) below Chilly sinks, near Boise River, Idaho, diversions from.. 225 Chilly, Idaho...... 108-109 Box Canyon, Idaho, discharge measurements below Chilly canal, near Chilly, Idaho. 104-106 of--- - 284 below Chilly sinks, near Chilly, Idaho. 106-107 Briggs Spring, Idaho, discharge measure below Mackay reservoir, near Mackay, ments of-.. 284 Idaho...... 115-117 Buhl, Idaho, Clear Lakes outlet near.__ 162-165 (east channel) above Mackay reservoir, Bull Run Creek at Aura, Nev____ ,. 282 near Mackay, Idaho_____ 110-111 near Deep Creek, Nev______... 282 near Moore, Idaho______119-121 C (west channel) above Mackay reservoir, near Mackay, Idaho_____ 112-113 Camas Creek at Camas, Idaho.. - . 279 Big Wood River above North Gooding canal, near Blaine, Idaho_____.____... 192-193 near Shoshone, Idaho_____ 179-181 near Camas, Idaho.-i.^____.. 91-92 at Gimlet, Idaho....______..._ 169-171 near Dutaois, Idaho______. 89-91 at Glendale Bridge, near Bellevue, near Hamer, Idaho.-..._.__..... 279 Idaho..--.-..-...... 174-175 Camas, Idaho, Beaver Creek at... 94-95 at Gooding, Idaho...... __..__ 182-184 Donahue ditch near._____._ 280 atHailey, Idaho...... 171-174 Hoflman ditch near...______280 at Ketchum, Idaho..___..__._.. i68-169 Lower Laird ditch near_ . 280 below Magic dam, near Richfield, Spencer ditch near_____._____ 280 .Idaho..-...... 178-179 Upper Laird ditch near -.. 280 below North Gooding canal, near Sho Cambridge, Idaho, Little Weiser River shone, Idaho.-...______181-182 near.-_....' .._.__.. 256-257 East Fork of, at Gimlet, Idaho__._ 189-190 Canyon Creek near Newdale, Idaho__ . 63-64 near Bellevue, Iflaho______176-177 Carey, Idaho, Fish Creek near 198-199,286 near Gooding, Idaho...--...___... 184-186 Little Wood River near.___. .... 194-195 Big Wood River, Idaho, discharge measure West Fork of Fish Creek near_.__ 200-201 ments of.."...... _ 285-286 Catherine Creek, Oreg., discharge measure Big Wood Slough at Hailey, Idaho._.... 190-192 ment of.-..___...._____.. 283 287 288 INDEX Page Page Cedar Creek below power plant, near Mac- Fish Creek above dam, near Carey, Idaho. 198-199 kay, Idaho.______...... 129-130 near Carey, Idaho-______------286 Chester and Squirrel gaging stations, Idaho, West Fork of, near Carey, Idaho...... 200-201 diversions from Fall River be Fort Hall lower canal near Blackfoot, Idaho. 87-88 tween...... _._...... 58-59 Fort Hall upper canal near Blackfoot, Idaho. 85-87 Chester, Idaho, Fall River near..... __.... 59-61 Friez water-stage recorder, plate showing.... 3 Chilly, Idaho, Big Lost River at..... _.... ^ 282 Fruitvale, Idaho, West Fo rk of Weiser River at Howell ranch, near______102-104 near______248-250 (back channel) below Chilly sinks, near_____....._...... _ 108-109 Q below Chilly canal near._ ___ 104-106 Gaging station, typical, plate showing. __. 2 below Chilly sinks, near______106-107 Garden Valley, Idaho, South Fork of Payette Thousand Springs Creek near_____ 121-122 River near.-.--.--.._____ 243-244 Clark ditch near Mackay, Idaho______130-131 Gimlet, Idaho, Big Wood River at.____ 169-171 Clayton, Idaho, Warm Springs Creek at East Fork of Big Wood River at.-. 189-190 Robinson Bar, near.._____ 274-275 Gold Creek, Nev., Owyhee River near.... 206-207 Yankee Fork of Salmon River near__ 272-273 Gooding, Idaho, Big Wood River at__... 182-184 Clear Creek, Idaho, miscellaneous discharge Big Wood River near. _...... 184-186 measurements of-...-___.__ 283 Goose Creek above Trapper Creek, near Clear Lakes outlet near Buhl, Idaho___ 162-165 Oakley, Idaho . 145-146 Clearwater River at Kamiah, Idaho--...-. 277-278 Grande Ronde River at La Grande, Oreg-- 275-276 Computations, results of, accuracy of.___. 4-5 Grays Lake outlet near Herman, Idaho . 68-69 Control, definition of ...... __.______2 Gurley printing water-stage recorder, plate Cooperation, record of.______9 showing.__.._____ -. 3 Corral Creek near Howe, Idaho.....__... 282 Cove Creek, Idaho, discharge measurement of-- .... 286 Hagerman, Idaho, Bliss Springs near 286 Crane Creek at mouth, near Weiser, Idaho. 258-259 Snake River near....______34-35 Crane Creek Irrigation District canal near Woodworth Springs near.._____.... 286 Weiser, Idaho___._ ... 260-261 Hailey, Idaho, Big Wood Slough at...... 190-192 Crystal Springs, Idaho, discharge measure Hamer Canal Co.'s artesian wells Nos. 121- ments of....___.__-.-__.-. 283 125, at Hamer, Idaho . ._.. 281 Current meters, Price, plate showing.-___ 2 Hamer Canal Co.'s pump canal at Hamer, D Idaho-.-.. -. 281 Hamer feeder pump canal near Hamer, Darlington, Idaho, Antelope Creek near_ 133-134 Idaho-. - 280 Data, accuracy of...______4-5 Hamer, Idaho, Camas Creek near ___.. 279 explanation of ______3-4 Dead Line Lake outlet near.---.._..-. 280 Dead Line Lake outlet near Hamer, Idaho.- 280 Melton pump ditch near.._____.... 280 Deadwood River near Lowman, Idaho.... 245-246 Owsley-Magill pump canal near.____ 280 'Deep Creek, Nev., Bull Run Creek near., 282 Rays Lake Canal Co.'s pump canal near. 280 discharge measurement of. .. ______282 Warm Spring Slough at...-.__.... . 280 South Fork of Owyhee River near__ 211-212 Wyley-Barnard pump canal near..-.-... 280 Deer Creek near Howe, Idaho______282 Heise and Shelley gaging stations, Idaho, Dirzulaitis, J. J., work of..._...... _._ 10 diversions from Snake River be Donahue ditch near Camas, Idaho..____ 280 tween. ______16-17 Drewsey, Oreg., Malheur River near ___ 226-227 Heise, Idaho, Snake River near. -____ 14-16 Dry Creek dam, Idaho, diversion canal near. 282 Henry, Idaho, Blackfoot-Marsh reservoir Dry Creek near Kilgore, Idaho______279 near______...... 73 Dubois, Idaho, Beaver Creek at______92-93 Blackfoot River near.... . 71-72, 74-75 Camas Creek near...______89-91 Little Blaokfoot River at _____ 79-80 Jacoby ditch near..._...___.__.. 280 Meadow Creek near.__...... 81-82 F Henrys Fork at St. Anthony, Idaho_____ 49-60 at Warm River, Idaho....____ 45-46 Fall River, diversions from, above gaging sta diversions from, between Ashton and St. tion near Squirrel, Idaho ...... 56-57 Anthony gaging stations, Idaho. 48-49 between Squirrel and Chester gaging between St. Anthony and Rexburg stations, Idaho.______58-59 gaging stations, Idaho ____ 50-51 near Chester, Idaho. ______59-61 near Ashton, Idaho______46-48 near Squirrel, Idaho______57-58 near Lake, Idaho___,______.-.. 43-45 Fir Creek, Idaho, discharge measurement of. 283 near Rexburg, Idaho.-_ 1______51-53 First Owsley segregation pump canal at Henshaw, F. F., and assistants, work of__ 9 Terreton, Idaho..__...... _ 280-281 Herman, Idaho, Grays Lake outlet near.__ 68-69 Firth, Idaho, Idaho (Government) canal Hoffman ditch near Camas, Idaho ... 280 near.______82-84 Homedale, Idaho, Sucker Creek near..._ 204-205 Sand Creek near....______84-85 Hope, Oreg , Malheur River near ___ 232-233 INDEX 289 Page Page Horn canal at Aura, Nev._.___.____ 282 Little Lost River at Raymond ranch, near Howe, Idaho, Badger Creek near______282 Howe, Idaho..____....___ 98-99 Blaine County diversion canal near. - - _. 282 near Howe, Idaho.______99-101,281 Corral Creek near ______282 Little Red Fish Lake, Idaho, Lake Creek Deer Creek near______282 below.-.._...... ___. 283 Little Lost River near...... 98-101,281 Little Weiser River near Cambridge, Idaho. 256-257 Spring Creek near...... __-...__. ' 282 near Indian Valley, Idaho.______254-255 Squaw Creek near...__..__..__.... 282 Little Wood River near Carey, Idaho. . _ 194-195 Teeny Creek near...... 182 near Richfield, Idaho. 196-197 Warm Springs Creek near______282 Wet Creek near.__._ ... 101-102 M Mackay, Idaho, Alder Creek near _____ 132-133 Big Lost River below Maekay reservoir, Idaho, cooperation by....____....__ 9 near...... 115-117 Idaho (Government) canal near Firth, Idaho. 82-84 (east channel) above Mackay reser near Shelley, Idaho______69-71 voir, near.______.__ 110-111 Idaho Power Co.'s canal, Idaho, discharge (west channel) above Mackay reser measurement of.-______.. 283 voir, near...... __... 112-113 Indian Valley, Idaho, Little Weiser River Cedar Creek near______129-130 near....-...,...... 254-255 Clark ditch near....______130-131 lona, Idaho, Willow Creek near..._.-... Sharp ditch near...... -...-.-___ 127-128 U. C. canals near______282 Warm Spring Creek (east channel) Jack Creek near Tuscarora. Nev______212-213 near....._... .'.__ 123-124 Jackson Hole, Wyo., Snake River at__--»-- 279 (west channel) near______125-126 Jackson Lake at Moran, Wyo.._____.. 12 Mackay reservoir near Mackay, Idaho, _.. 114-115 Jacoby ditch near Dubois, Idaho..--____ 280 Malad flume, Idaho, discharge measurement Jefferson reservoir canal near Monteview, of.... _ 286 Idaho.__..._..- .-...._ 281 Malheur County, Oreg., cooperation by__ 9 Jemmett pump ditch at Terreton, Idaho.... 281 Malheur, Oreg., Willow Creek near..__ 233-235 Jensen pump ditch at Terreton, Idaho...... 281 Malheur River below Warmsprings reser voir, near Riverside, Oreg__ 228-229 K near Drewsey, Oreg--______226-227 Kamiah, Idaho, Clearwater River at...... 27V-278 near Hope, Oreg.. ..._____.__ 232-233 Kearns Springs, Idaho, discharge measure nearNamorf, Oreg----______230-231 ment of______285 South Fork of, at Riverside, Oreg..__ 283 Ketchum, Idaho, Big Wood River at___168-169 Mann Creek near Weiser, Idaho______263-264 Trail Creek at...... 188-189 Meadow Creek near Henry, Idaho. __.'__ 81-82 Warm Springs, Creek near.. _____ 186-187 Medicine Lodge Creek near Small. Idaho._ 95-96 Kilgore, Idaho, Dry Creek near..______279 Melton pump ditch near Hamer, Idaho..... 280 Wood Livestock Co. ditch near..._. _ 280 Mesa, Idaho, Middle Fork of Weiser River Woods Lucky Strike ditch near...__. 279 near__...... 252-254 Woods Woodie ditch near..______279 Mesa Orchards canal, Idaho, discharge Kimberly, Idaho, Snake River near..____ 279 measurement of-. 283 King Hill ditch, Idaho, discharge measure Miller-Cutler pump ditch at Terreton, Idaho. 281 ment of. .__.__....___ 286 Milner, Idaho, Lake Milner at... 29 King Hill, Idaho, Snake River at______36-37 Murtaugh canal near 150-152 North Side Twin Falls canal at___.. 152-154 P. A. lateral near. 149-150 La Grande, Oreg., Grande Ronde River at. 275-276 Snake River at._.... 29-31 Lake Creek below Little Red Fish Lake, South Side Twin Falls canal at____ 154-156 Idaho--...... 283 Minidoka, Idaho, Lake Walcott near... 26 Lake, Idaho, Henrys Fork near_ .... 43-45 North Side Minidoka canal near_ 141-142 Lake Milner at Milner, Idaho..._.__--- 29 Snake River near__ 27-28 Lake Walcott near Minidoka, Idaho___.. 26 South Side Minidoka canal near 143-144 Lenox, Idaho, South Fork of Boise River Monteview, Idaho, Jefferson reservoir canal near...... __...... 221-222 near____.^ 281 Leslie, Idaho, Big Lost River at______117-119 Rising pump well near... .. 281 Pass Creek near...... _.._. __.. 135-136 Winder pump well at _ . 281 Level, Idaho, Welchman pump ditch near... 281 Moore Creek near Arrowrock, Idaho.. 223-225 Lost Creek above Lost Valley reservoir, Moore, Idaho, Big Lost River near 119-121 Idaho-...... 283 Moran, Wyo., Jackson Lake at 12 near Tamarack, Idaho______250-251 Snake River near...... 13-14 Lower Laird ditch near Camas, Idaho. 280 Mountain City, Nev., Owyhee River at..... 282 Lowman, Idaho. Deadwood River near. 245-246 VanDuser Creek near...... 282 Little Blackfoot River at Henry, Idaho...... 79-80 Mud Lake at Terreton, Idaho. . 88-89 290 INDEX Page Page Murphy, Idaho, Snake River near_...____ 37-39 Rexburg and St. Anthony' gaging stations, Murtaugh canal near Milner, Idaho..----- 150-152 Idaho, diversions from Henrys Fork between. ______50-51 N Rexburg, Idaho, Henrys Fork near__. __ 51-53 Namorf. Oreg.. Malheur River near-.__ 230-231 Richfield, Idaho, Big Wood River below Neeley, Idaho, Snake River at_._.______24-25 Magic dam, near-.-. -___ 178-179 Nevada, cooperation by-._-.-._.--__..... Little Wood River near _ _ -.. _____ 196-197 Newdale, Idaho, Canyon Creek near.__.. 63-64 Riley Creek, Idaho, discharge measurements Niagara Springs, Idaho, discharge measure of..,______.______285 ments of-..__-...-...___.__ 283-284 Riparia, Wash., Snake River at,-.____-___-_ 42-43 North Powder, Oreg., Powder River near.. 264-265 Ririe, Idaho, Willow Creek near______65-66 North Side Minidoka canal near Minidoka, Rising pump well near Monteview, Idaho_ 281 Idaho--______141-142 Riverside, Oreg., Malheur River near.---- 228-229 North Side Twin Falls canal at Milner, South Fork of Malheur River at .-_. 283 Idaho.- __ - _ - 152-154 Warmsprings reservoir near,-_-_____ 227-228 Notus, Idaho, Boise River at__...___ 219-220 Robinson Creek at Warm River, Idaho___ 54-56 Rogerson Springs, Idaho, discharge measure O ment of__._-__-_-_---.__-__----_. 283 Oakley, Idaho, Goose Creek above Trapper Roseberry, Idaho, Gold Fork of Payette Creek, near_--.---...___. 145-146 River near. ______241-242 Trapper Creek near.._..___...- 147-148 Run-off in inches, definition of-_-. _ 2 Oregon, cooperation by______....-_.. 9 Owsley-MagiJJ pump canal near Hamer, Idaho.------280 St. Anthony and Ashton gaging stations, Owyhee River at Mountain City, Nev_... 282 Idaho, diversions from Henrys near Gold Creek, Nev _. 206-207 Fork between______. 48-49 near Owyhee, Nev... ------208 St. Anthony and Rexburg gaging stations, near Owyhee, Oreg----.---.~------209-210 Idaho, diversions from Henrys South Fork of, near Deep Creek, Nev. 211-212 Fork between_-_--___._.._.. 50-51 St. Anthony gaging station and mouth of river, Idaho, diversions from P. A. lateral near Milner, Idaho______149-150 Teton River between...____ 62-63 Parker, G. L., and assistants, work of.------10 St. Anthony, Idaho, Henrys Fork at ___ 49-50 Pass Creek near Leslie, Idaho.-______135-136 Teton River near______.___ 61-62 Paulsen, C. G., and assistants, work of_-__ 9 Salmon Falls Creek near San Jacinto, Nev. 166-167 Payette River, Gold Fork of, near Roseberry, Salmon River at Salmon, Idaho. - 267-269 ' Idaho.---______-____- 241-242 at Stanley, Idaho...... 266-267 near Horseshoe Bend, Idaho______235-237 at Whitebird, Idaho. -- 269-270 North Fork of, at Lardo, Idaho ---. 237-239 Yankee Fork of, near Clayton, Idaho.. 272-273 at Van Wyck, Idaho..- - 239-240 Salmon River, Idaho, discharge measurement South Fork of, near Banks, Idaho.._ 244-245 of---- 283 near Garden Valley, Idaho.. ___ 243-244 Sand Creek near Firth, Idaho.-______84-85 Picabo, Idaho, Silver Creek near.. ____ 202-203 Sand Springs, Idaho, discharge measure Pincock Hot Springs, Idaho, Warm Springs ments of-_-___--______284 Creek near ___ _ 279 San Jacinto, Nev., Salmon Falls Creek near 166-167 Pocatello, Idaho, Portneuf River at -__ 138-140 Second-feet, definition of--...______2 Porterville and Blackfoot gaging stations, Second-feet per square mile, definition of._ 2 Idaho, diversions from Snake Second Owsley and Mud Lake pump canal River between . _...... 21 at Terreton, Idaho______281 Porterville and Shelley gaging stations, Sharp ditch near Mackay, Idaho ______127-128 Idaho, diversions from Snake Shelley and Heise gaging stations, Idaho, di River between.-_-_____-_ _ 18-19 versions from Snake River be Portneuf River at Pocatello, Idaho------138-140 tween. - - - _ 16-17 at Topaz, Idaho____ . 137-138 Shelley and Porterville gaging stations, Ida Powder River near North Powder, Oreg_ 264-265 ho, diversions from Snake River Price current meters, plate showing.''_-.-... 2 between.______-___ 18-19 Publications, information concerning___--_ 5-8 Shelley, Idaho, Blackfoot River near.___. 76-77 obtaining or consulting of_____-.... 6 Idaho (Government) canal near-._._ 69-71 on stream flow, list of-__...__..__ 7 Snake River near___...... 1...-..--.. 17-18 Purton, A. B., and assistants, work of . _ 9 Shoshone, Idaho, Big Wood River above North Gooding canal, near.... 179-181 . R Big Wood River below North Gooding Rays Lake Canal Co.'s pump canal near canal, near. - _ . 181-182 Hamer, Idaho______280 Silver Creek near Picabo, Idaho______202-203 Reno, Idaho, Birch Creek near __ _...... 6-98 Small, Idaho, Medicine Lodge Creek near... 95-96 INDEX 291 Page Page Snake River at Jackson Hole, Wyo. __ __ 279 Thousand Springs Creek near Chilly, at King Hill, Idaho...... 36-37 Idaho...... 121-122 at Milner, Idaho...___...... ___ 29-31 Thousand Springs (east channel), Idaho, dis at Neeley, Idaho...______24-25 charge measurement of...____ 285 at Porterville Bridge, near Blackfoot, discharge measurements of.______285 Idaho...... ___...._...._ 19-21 (west channel), Idaho, discharge measure at Riparia, Wash...... __...___ 42-43 ment of______285 at south boundary of Yellowstone Na Topaz, Idaho, Portneuf River at_____ 137-138 tional Park...______.__.. 10-12 Trail Creek at Ketchum, Idaho....__.. 188-189 at Weiser, Idaho______40-41 Trapper Creek near Oakley, Idaho.___ 147-148 diversions from, between Heise and Tuscarora, Nev., Jack Creek near..__.. 212-213 Shelley gaging stations, Idaho.. 16-17 Twin Falls, Idaho, Blue Lakes outlet near. 156-161 between Porterville and Blaekfoot Snake River near._...... __ 32-33 gaging stations, Idaho_____ 21 Twin Springs, Idaho, Boise River near __ 214-215 between Shelley and Porterville gag Two Ocean Creek, Idaho, miscellaneous dis ing stations, Idaho______18-19 charge measurements of_____ 279 near Blaekfoot, Idaho..__._._..... 22-23 U near Hagerman, Idaho_._____. __ 34-35 U. C. canals near MaeKay, Idaho. _____ 282 near Heise, Idaho______14-16 United States Bureau of Reclamation, coop near Kimberly, Idaho.______279 eration by_ ___ 9 near Minidoka, Idaho....____.__ 27-28 United States Forest Service, cooperation by. 9 near Moran, Wyo______13-14 United States Office of Indian Affairs, coop near Murphy, Idaho...______37-39 eration by______---.---... 9 near Shelley, Idaho...... 17-18 United States Weather Bureau, cooperation near Twin Falls, Idaho___.__.___ 32-33 by,. ... . 9 Snowbank Falls, Idaho, discharge measure Upper Laird ditch near Camas, Idaho..__ 280 ments of ..__---.-...... _. 285 South Side Minidoka canal near Minidoka, V Idaho... _ 143-144 Valley Creek at Stanley, Idaho.-... .. 271-272 South Side Twin Falls canal at Milner, Van Duser Creek near Mountain City, Nev.. 282 Idaho...... _. __ 154-156 Van Wyck, Idaho, North Fork of Payette Spencer ditch near Camas, Idaho______280 River at...... ____...... 239-240 Spencer, Idaho, Woods Hump ditch near_ 279 W Spring Creek near Howe, Idaho. ______282 Wallowa River at Wallowa, Oreg______283 Squaw Creek near Howe, Idaho._____.. 282 Warm River at Warm River, Idaho____. 53-54 Squirrel and Chester gaging stations, Idaho, Warm River, Idaho, Henrys Fork at_.__ 45-46 diversions from Fall River be Robinson Creek at...... __...._... 54-56 tween.___...... __.._ 58-59 Warm Spring Creek (east channel) near Squirrel, Idaho, diversions from Fall River Mackay, Idaho...... 123-124 near______56-57 (west channel) near Mackay, Idaho_ 125-126 Fall River near.__....___.___.. 57-58 Warm Spring Slough at Hamer, Idaho.. __ 280 Stage-discharge relation, definition of. ___ 2 Warm Springs Creek at Robinson Bar, near Stanley, Idaho, Salmon River at...___ 266-267 Clayton, Idaho...._..__... 274-275 Valley Creek at 271-272 near Howe, Idaho. ______... . 282 Starkey, Idaho, Weiser River at. __...... 283 near Ketchum, Idaho... __. __.... 186-187 Stevens continuous water-stage recorder, near Pincock Hot Springs, Idaho___.. 279 plate showing...______3 Warmsprings Irrigation District, cooperation Sucker Creek near Homedale, Idaho_... 204-205 by ...... 9 Warmsprings reservoir near Riverside, Oreg... 227-228 Tamarack, Idaho, Lost Creek near. ___ 250-251 Washington, cooperation by.------. 9 Teeny Creek near Howe, Idaho ... _____ 182 Water-stage recorders, plate showing... __ 3 Terms, definition of. . ______2-3 Weiser, Idaho, Crane Creek at mouth, Terreton, Idaho, First Owsley segregation near...... __.____...... 258-259 pump canal at _ _ 280-281 Crane Creek Irrigation District canal Jemmett pump ditch at. ______. __ 281 near...... 260-261 Jensenpump ditch at...... _ 281 Mann Creek near...- ... 263-264 Miller-Cutler pump ditch at ______281 Snake River at _____ - ______40-41 Mud Lake at. _ . __ ...... ___ ..-.. 88-89 Weiser Irrigation District canal near.. 261-262 Second Owsley and Mud Lake pump Weiser Irrigation District canal near Weiser, canal at . ______281 Idaho...... 261-262 Teton mill ditch at Teton, Idaho ______279 Weiser River above Crane Creek, near Teton River, diversions from, between St. ' Weiser, Idaho. - 246-248 Anthony gaging station and at Starkey, Idaho... . 283 mouth of river, Idaho ______62-63 Middle Fork of, near Mesa, Idaho .. 252-254 near St. Anthony, Idaho ______61-62 West Fork of, near Fruitvale, Idaho.. 248-250 14234 25 20 292 INDEX Page Page Welchman pump ditch near Level, Idaho... 281 Woods Lucky Strike ditch near Kilgore, Wet Creek at Clyde school, near Howe, Idaho.. _-.. . 279 Idaho...... 101-102 Woods Woodie ditch near Kilgore, Idaho_ 279 Wet Creek, Idaho, discharge measurements Woodworth Springs near Hagerman, Idaho.. 286 of... .. 282 Work, authorization of.. 1 Whitebird, Idaho, Salmon River at____ 269-270 division of.___... . 9-10 Willow Cr«ek near lona, Idaho______. 66-68 scope of. » -...... 1-2 near Malheur, Oreg.'..._.__. 233-235 Wyley-Barnard pump canal near Hamer, near Ririe, Idaho______-__ 65-66 Idaho... . ,.-. 280 Willow River Land & Irrigation Co., coop Y eration by______.__... 9 Yellowstone National Park, Snake River at Winder pump well at Monteview, Idaho_ 281 south boundary of _------10-12 Wood Livestock Co. ditch near Kilgore, Idaho...... -...-...... 280 2 Woods Hump ditch near Spencer, Idaho.... 279 Zero flow, point of, definition of...._.... 3 o