UNITED STATES DEPARTMENT OF THE INTERIOR 

HAROLD L. ICKES, Secretary

GEOLOGICAL SURVEY 

W. C. MENDENHALL, Branch^

okal Survey,

Water-Supply Par . , Station

G '--

SURFACE WATER 

of the UNITED S1

1941 '-' \ I

PART 13 ' »

SNAKE RIVER BASIN

O C~-

Prepared under the direction of ^ ^!C 

GLENN L. PARKER, Chief Hydraulic Engineer£, O

AND OP G. H. CANFIELD, LYNN CRANDALL, ROBERT FOLLANSBEET

T. R. NEWELL, A. B. PURTON, AND F. M. VEATGH v* J*T"

District Engineers iH ««-p

In cooperation with the States of -^

IDAHO, OREGON, WASHINGTON, AND WYOMING

and other agencies ^T

UNITED STATES

GOVERNMENT PRINTING OFKICE 

WASHINGTON : 1942

For sale by the Superintendent of Documents, Washington, D. C. - - - Price 30 cents (paper cover)
CONTENTS

Page

Scope of work........................................................................ 1

Definition of terms.................................................................. 1

Explanation of data.................................................................. l

Accuracy of field data and computed results.......................................... 3

Publications......................................................................... 4

Records of discharge collected by agencies other than the Geological Survey.......... 9

Cooperation.......................................................................... 10

Division of work..................................................................... 10

Gaglng-statlon records............................................................... 11

Snake River main- stem.............................................................. 11

Jackson Lake at Moran, Wyo....................................................... 11

Snake River at Moran, Wyo........................................................ 12

Snake River at Calamity Point, near Irwln, Idaho................................. 13

Snake River near Helse, Idaho.................................................... 14

Diversions from Snake River between Helse and Shelley gaging stations, Idaho..... 15

Snake River near Shelley, Idaho.................................................. 16

Diversions from Snake River between Shelley and dough Ranch gaging stations,

Idaho.......................................................................... 17

Snake River at Clough Ranch, near Blackfoot, Idaho............................... 18

American Falls Reservoir at American Falls, Idaho................................ 19

Snake River at Neeley, Idaho..................................................... 21

Lake Walcott near Mlnldoka, Idaho................................................ 22

Snake River near Mlnldoka, Idaho................................................. 23

Snake River at Mllner, Idaho..................................................... 24

Snake River near Klmberly, Idaho................................................. 25

Snake River near Twin Falls, Idaho............................................... 26

Snake River near Hagerman, Idaho. ................................................ 27

Snake River below Lower Salmon Falls, near Hageraan, Idaho....................... 28

Snake River at King Hill, Idaho.................................................. 29

Snake River near Murphy, Idaho................................................... 30

Snake River at welser, Idaho..................................................... 31

Snake River at Oxbow, Oreg....................................................... 32

Snake River near Clarkston, Wash................................................. 33

Flat Creek Basin................................................................... 35

Flat Creek near Jackson, Wyo..................................................... 35

Salt River Basin................................................................... 36

Salt River near Smoot, Wyo....................................................... 36

Salt River at Wyoming-Idaho State line........................................... 37

Cottonwood Creek near Smoot, Wyo................................................. 38

Strawberry Creek near Bedford, Wyo............................................... 39

Henrys Fork Basin.................................................................. 40

Henrys Fork near Lake, Idaho..................................................... 40

Island Park Reservoir near Island Park, Idaho.................................... 41

Henrys Fork near Island Park, Idaho.............................................. 42

Henrys Fork at Warm River, Idaho................................................. 43

Henrys Fork near Ashton, Idaho................................................... 44

Diversions from Henrys Fork between Ashton and St. Anthony gaging stations, Idaho 45

Henrys Fork at St. Anthony, Idaho................................................ 46

Diversions from Henrys Fork between St. Anthony and Rexburg gaging stations,

Idaho.......................................................................... 47

Henrys Fork near Rexburg, Idaho.................................................. 48

Smaller reservoirs In Henrys Fork Basin.......................................... 49

Diversions from Fall River above gaging station near Squirrel, Idaho............. 50

Fall River near Squirrel, Idaho.................................................. 51

Diversions from Fall River between Squirrel and Chester gaging stations, Idaho... 52

Fall River near Chester, Idaho................................................... 53

Teton River near Tetonla, Idaho.................................................. 54

Teton River near St. Anthony, Idaho.............................................. 55

Diversions from Teton River between St. Anthony gaging station and mouth, Idaho.. 56

Blackfoot River Basin.............................................................. 57

Blackfoot River near Blackfoot, Idaho............................................ 57

Mud Lake-Lost River Basin.......................................................... 5S

Mud Lake Basin................................................................... 58

Mud Lake near Terreton, Idaho.................................................. 58

Cainas Creek at Elghteenmlle Shearing Corral, near Kllgore, Idaho............... 59

Camas Creek at Camas, Idaho.................................................... 60

Beaver Creek at Spencer, Idaho................................................. 61

Beaver Creek at Dubols, Idaho.................................................. 62

Beaver Creek at Camas, Idaho................................................... 63

Medicine Lodge Creek near Argora, Idaho........................................ 64

Medicine Lodge Creek at Bills Ranch, near Argora, Idaho........................ 65

Medicine Lodge Creek near Small, Idaho......................................... 66

Little Lost River Basin........................ ................................. 67

Little Lost River near Howe, Idaho............................................. 67

Blalne County Investment Co 1 s canal near Howe, Idaho........................... 68

Big Lost River Basin............................................................. 69

Big Lost River at Howell Ranch, near Chilly, Idaho............................. 69

Big Lost River (east channel) above Mackay Reservoir, near Mackay, Idaho....... 70

III
FV CONTENTS

Gaging-station records Continued.

Mud Lake-Lost River Basin Continued.

Big Lost River Basin Continued. Page

Big Lost River (west channel) above Mackay Reservoir, near Mackay, Idaho....... 71

Mackay Reservoir near Mackay, Idaho............................................ 73

Big Lost River below Mackay Reservoir, near Mackay, Idaho...................... 74

Warm Spring Creek feast channel) near Mackay, Idaho............................ 75

Warm Spring Creek (west channel) near Mackay, Idaho............................ 76

Sharp ditch near Mackay, Idaho................................................. 77

Portneuf River Basin............................................................... 78

Portneuf River at Topaz, Idaho................................................... 78

Portneuf River at Pocatello, Idaho............................................... 79

Birch Creek near Downey, Idaho................................................... 80

Tributaries and diversions between Portneuf River and Salmon Falls Creek........... 81

North Side Mlnldoka canal near Mlnldoka, Idaho................................... 81

South Side Mlnldoka canal near Mlnldoka, Idaho................................... 82

Goose Creek above Trapper Creek, near Oakley, Idaho.............................. 83

Oakley Reservoir near Oakley, Idaho.............................................. 84

Trapper Creek near Oakley, Idaho................................................. 85

P. A. lateral near Mllner, Idaho................................................. 86

Mllner low-lift canal near Mllner, Idaho......................................... 87

Goodlng canal at Mllner, Idaho.................................................... 88

North Side Twin Falls canal at Mllner, Idaho..................................... 89

South Side Twin Falls canal at Mllner, Idaho..................................... 90

Rock Creek near Twin Falls, Idaho................................................ 91

Salmon Falls Creek Basin........................................................... 92

Salmon Falls Creek near San Jaclnto, Nev......................................... 92

Salmon River Canal Co. Reservoir near Rogerson, Idaho............................ 93

Salmon River Canal Co. canal near Rogerson, Idaho................................ 94

Big Wood River Basin............................................................... 95

Big Wood River at Halley, Idaho.................................................. 95

Big Wood River near Bellevue, Idaho.............................................. 97

Magic Reservoir near Richfield, Idaho............................................ 98

Big Wood River below Magic Dam, near Richfield, Idaho............................ 99

Big Wood River at Gooding, Idaho................................................. 100

Big Wood River near Goodlng, Idaho............................................... 101

Warn Springs Creek at Guyer Hot Springs, near Ketchum, Idaho..................... 102

Big Wood Slough at Hailey, Idaho................................................. 103

Camas Creek near Blaine, Idaho................................................... 104

Lincoln canal near Richfield, Idaho.............................................. 105

Lincoln canal near Shoshone, Idaho...........j................................... 106

Thorn Creek spillway near Goodlng, Idaho......................................... 107

Little Wood River at Campbell Ranch, near Carey, Idaho........................... 108

Little Wood River near Carey, Idaho.............................................. 109

Little Wood River near Richfield, Idaho.......................................... Ill

Little Wood River at Shoshone, Idaho............................................. 112

Silver Creek near Picabo, Idaho.................................................. 113

King Hill canal near Hagerman, Idaho............................................. 114

Tributaries and diversions between Big Wood River and Owyhee River................. 115

Clover Creek near Bliss, Idaho................................................... 115

King Hill Creek near King Hill, Idaho............................................ 116

Little Canyon Creek near Glenns Ferry, Idaho..................................... 117

Bennett Creek near Bennett, Idaho................................................ 118

Mountain Home feeder canal near Mountain Home, Idaho............................. 119

Mountain Hone cooperative canal near Mountain Home, Idaho........................ 120

Wickahoney Creek near Bruneau, Idaho............................................. 121

Jacks Creek near Bruneau, Idaho.................................................. 122

Owyhee River Basin................................................................. 123

Wild Horse Reservoir near Gold Creek, Nev........................................ 123

Owyhee River near Gold Creek, Nev................................................ 124

Owyhee River at Mountain City, Nev............................................... 125

Owyhee River above China diversion dam, near Owyhee, Nev......................... 126

Owyhee River above Owyhee Reservoir, Oreg........................................ 127

Owyhee Reservoir at Owyhee Dam, near Nyssa, Oreg................................. 128

Owyhee River below Owyhee Dam, Oreg.... ......................................... 129

Boise River Basin.................................................................. 130

Boise River near Twin Springs, Idaho............................................. 130

Arrowrock Reservoir at Arrowrock, Idaho.......................................... 131

Boise River at Dowling Ranch, near Arrowrock, Idaho.............................. 132

Boise River at Boise, Idaho...................................................... 133

Boise River at Hotus, Idaho...................................................... 134

Diversions from Boise River, Idaho............................................... 135

Cottonwood Creek at Arrowrock Reservoir, Idaho................................... 136

South Fork of Boise River near Lenox, Idaho...................................... 137

Grouse Creek near Arrowrock, Idaho............................................... 138

Little Camas canal at heading near Bennett, Idaho................................ 139

Moore Creek above Granite Creek,near Idaho City, Idaho........................... 140

Moore Creek above Thorn Creek,near Idaho City, Idaho............................. 141

Moore Creek near Arrowrock, Idaho................................................ 142

Gold Hill Placer diversion from Moore Creek near Idaho City, Idaho............... 143

Granite Creek near Idaho City, Idaho............................................. 144

Bannock Creek near Idaho City, Idaho............................................. 145

Pine Creek above Barry Placer diversion near Idaho City, Idaho................... 146

Elk Creek above Gold Hill Placer diversion near Idaho City, Idaho................ 148

New York canal near Barber, Idaho................................................ 149

Cottonwood Gulch at Boise, Idaho................................................. 150

Deer Flat Reservoir near Caldwell, Idaho......................................... 151

Malheur River Basin................................................................ 152

Malheur River near Drewsey, Oreg................................................. 152

Malheur River below Warmsprings Reservoir, near Riverside, Oreg.................. 153
CONTENTS v

Qaging-station records Continued.

Malheur River Basin Continued. Page

Malheur River near Hope, Oreg................................................... 154

Reservoirs in Malheur River Basin, Oreg......................................... 155

North Fork of Malheur River above Agency Valley Reservoir, near Beulah, Oreg.... 156

North Fork of Malheur River at Beulah, Oreg..................................... 157

Payette River Basin............................................................... 158

South Fork of Payette River at Lowman, Idaho.................................... 158

South Fork of Payette River near Garden Valley, Idaho........................... 159

South Fork of Payette River near Banks, Idaho................................... 160

Payette River near Horseshoe Bend, Idaho........................................ 161

Payette River near Eramett, Idaho................................................ 162

Payette River near Payette, Idaho............................................... 163

Clear Creek at Lowman, Idaho.................................................... 164

Deadwood Reservoir near Lowman, Idaho........................................... 165

Deadwood River below Deadwood Reservoir, near Lowman, Idaho..................... 166

Deadwood River near Lowman, Idaho............................................... 167

Payette Lake at Lardo, Idaho.................................................... 168

North Fork of Payette River at Lardo, Idaho..................................... 169

North Fork of Payette River at Cascade, Idaho................................... 170

North Fork of Payette River near Smiths Ferry, Idaho............................ 171

Lake Fork of Payette River above reservoir near McCall, Idaho................... 172

Lake Fork Reservoir near McCall, Idaho.......................................... 173

Lake Fork of Payette River below Lake Irrigation District canal, near McCall,

Idaho......................................................................... 174

Lake Irrigation District canal near McCall, Idaho............................... 175

Porter Creek near Gardena, Idaho................................................ 176

Weiser River Basin................................................................ 177

Weiser River at Tamarack, Idaho................................................. 177

Weiser River at Starkey, Idaho.................................................. 178

Weiser River near Council, Idaho.'............................................... 179

Weiser River near Cambridge, Idaho.............................................. 180

Weiser River above Crane Creek, near Weiser, Idaho.............................. 181

East Fork of VJeiser River near Council, Idaho................................... 182

West Fork of Weiser River near Fruitvale, Idaho................................. 183

Lost Valley Reservoir near Tamarack, Idaho...................................... 184

Lost Creek near Tamarack, Idaho................................................. 185

Hornet Creek near Council, Idaho................................................ 186

Middle Fork of Weiser River near Mesa, Idaho.................................... 187

Mesa Orchards canal near Mesa, Idaho................................... ........ 188

Johnson Creek below Johnson Park near Council, Idaho............................ 189

Rush Creek at Cambridge, Idaho.................................................. 190

Pine Creek near Cambridge, Idaho................................................ 191

Little Weiser River near Indian Valley, Idaho................................... 192

Crane Creek Reservoir near Midvale, Idaho....................................... 193

Crane Creek near Midvale, Idaho................................................. 194

Crane Creek at mouth, near Weiser, Idaho........................................ 195

Weiser Irrigation District canal near Weiser, Idaho............................. 196

Mann Creek near Weiser, Idaho................................................... 197

Burnt River Basin................................................................. 198

Unity Reservoir near Unity, Oreg................................................ 198

Burnt River near Hereford, Oreg................................................. 199

Powder River Basin................................................................ 200

Powder River at Salisbury, Oreg................................................. 200

Powder River near Ro'oinette, Oreg............................................... 201

Imnaha River Basin................................................................. 202

Imnaha River at Imnaha, Oreg.................................................... 202

Salmon River Basin................................................................. 203

Salmon River near Obsidian, Idaho............................................... 203

Salmon River below Valley Creek, at Stanley, Idaho.............................. 204

Salmon River below Yankee Fork, near Clayton, Idaho............................. 205

Salmon River near Chains, Idaho................................................ 206

Salmon River at Salmon, Idaho................................................... 207

Salmon River at Whitebird, Idaho................................................ 208

Alturas Lake Creek near Obsidian, Idaho......................................... 209

Valley Creek at Stanley, Idaho.................................................. 210

Yankee Fork of Salmon River near Clayton, Idaho................................. 211

Pahsimeroi River near May, Idaho................................................ 212

Lemlii River at Salmon, Idaho..................................................... 213

Middle Fork of Salmon River near Cape Horn, Idaho............................... 214

Bear Valley Creek near Cape Horn, Idaho......................................... 215

South Fork of Salmon River near Knox, Idaho..................................... 216

South Fork of Salmon River near Warren, Idaho................................... 217

East Fork of South Fork of Salmon River at Stibnite, Idaho...................... 218

East Fork of South Fork of Salmon River near Stibnite, Idaho.................... 219

East Fork of South Fork of Salmon River near Yellow Pine, Idaho................. 220

Johnson Creek at Yellow Pine, Idaho............................................. 221

Boulder Creek near Tamarack, Idaho.............................................. 222

Grande Ronde River Basin.......................................................... 223

Grande Ronde River at La Grande, Oreg........................................... 223

Graude Ronde River at Rondowa, Oreg............................................. 224

Catherine Creek near Union, Oreg................................................ 225

East Fork of Wallowa River near Joseph, Oreg.................................... 226

Wallowa Falls power-plant tailrace near Joseph, Oreg............................ 227

Hurricane Creek near Joseph, Oreg............................................... 228

Lostine River near Lostine, Oreg................................................ 229

Bear Creek near Wallowa, Oreg................................................... 230

Asotin Creek Basin................................................................ 231

Asotin Creek near Asotin, Wash.................................................. 231
VI CONTENTS

Oaglng-statlon records Continued. Page

Clearwater River Basin............................................................ 232

Selway River near Lowell, Idaho.....................'............................ 232

Clearwater River at Kamlah, Idaho............................................... 233

Clearwater River at Spaldlng, Idaho............................................. 234

Lochsa River near Lowell, Idaho................................................. 235

South Fork of Clearwater River near Grangevllle, Idaho.......................... 236

North Fork of Clearwater River near Ahsahka, Idaho.............................. 237

Mission Creek near Winchester, Idaho............................................ 238

Palouse River Basin............................................................... 239

South Fork of Palouse River at Pullman, Wash.................................... 239

Miscellaneous discharge measurements.............................................. 240

Index.............................................................................. 243

ILLUSTRATIONS

Page 

Plate 1. Qaglng-statlon structures: A, Snake River at King Hill, Idaho; B, Snake

River near Murphy, Idaho; tl, Snake River near Clarkston, Wash.T......... 2
SURFACE WATER SUPPLY OF SHAKE RIVER BASIN, 1941

SCOPE OF WORK

This volume Is one of a aeries of 14 reports presenting results of measurements of 

stage and flow made on streams, lakes, and reservoirs In the United States during the 

water year ending September 30, 1941. The work was begun In 18(38 In connection with 

special studies relating to Irrigation. Measurements of the flow of streams and of the 

stage and contents of lakes and reservoirs have been made at about 9,120 gaging stations 

In the United States and also at many gaging stations In Alaska and Hawaii. In July 1941, 

4,850 gaging stations were being maintained by the Geological Survey and cooperating organizations. Miscellaneous discharge measurements were made at many other points.

In the execution of the work many State and private organizations have cooperated, 

either by furnishing data or by assisting In collecting data. Cooperation of the first 

kind Is acknowledged In connection with the description of each station affected; cooperation of the second kind Is acknowledged on page 10.

DEFINITION OF TERMS

The units In which stream-flow data are presented In this report and other terms used 

herein are defined as follows:

"Second-feet" Is an abbreviation for "cubic feet per second." A second-foot Is the 

rate of discharge of a stream whose channel Is 1 square foot In cross-sectional area and 

whose average velocity Is 1 foot per second.

"Second-feet per square mile" Is the average number of cubic feet of water flowing per 

second from each square mile of area drained, on the assumption that the runoff Is distributed uniformly both as regards time and area.

"Runoff In Inches" is the depth to which an area would be covered if all the water 

draining from It In a given period were uniformly distributed on Its surface. It Is used 

for comparing runoff with rainfall, which Is usually expressed In Inches.

An "acre-foot" Is the quantity of water required to cover an acre to the depth of 1 

foot and Is equivalent to 43,560 cubic feet. The term Is commonly used In connection with 

storage for Irrigation.

"Second-foot-day" Is the volume of water represented by a flow of 1 second-foot for 24 

hours. It Is equivalent to 86,400 cubic feet, 1.983471 acre-feet, or 646,317 gallons and 

represents a runoff of 0.0373 Inch from 1 square mile.

"Stage-discharge relation" Is an abbreviation for the term "relation between gage 

height and discharge."

"Control" Is a term used to designate a feature downstream from the gage that determines 

the stage-discharge relation at the gage. This feature may be a natural section, a reach 

of the channel, or an artificial structure.

EXPLANATION OF DATA

The base data collected at gaging stations consist of records of stage, measurements of 

discharge, and general Information used to supplement the records of stage and discharge

1
2 EXPLANATION OF DATA

measurements In determining the daily flow. The records of stage are obtained either from 

direct readings on a nonrecording gage or from a water-stage recorder that gives a continuous record of the fluctuations. Measurements of discharge are made with a current 

meter by the general methods outlined In standard textbooks on the measurement of river 

discharge. Typical structures in use at gaging stations are shown on plate 1.

Rating tables giving the discharge for any stage are prepared from the discharge measurements. The application of the daily mean gage height to these rating tables gives the 

dally mean discharge, from which the monthly and the yearly mean discharge are computed. 

If the stage-discharge relation Is subject to change because of frequent or continual 

change in the physical features that form the control, the dally mean discharge Is 

determined by the "shifting-control method," in which correction factors based on individual discharge measurements are used in applying the gage heights to the rating tables.

At some gaging stations the stage-discharge relation is affected by backwater from 

reservoirs, tributary streams, or other sources, which necessitates the use of the "slope 

method" in which the slope or fall in a reach of the stream Is a factor In the determination of discharge. Information requisite for determining the slope or fall is obtained 

by means of an auxiliary gage set at some distance from the base gage. At some stations 

the stage-discharge relation is affected by changing stage, and for them the rate of 

change of stage Is used as a factor in the determination of discharge.

At most gaging stations in the northern part of the United States and at some In the 

mountainous regions of other parts the stage-discharge relation Is affected by Ice during 

the winter, which makes it impossible to compute the discharge in the usual manner. Discharge for periods of ice effect Is computed on the basis of the gage-height record and 

occasional winter discharge measurements, consideration being given to the available information on temperature and precipitation, notes by gage observers and engineers, and 

comparable records of discharge for stations in the same or nearby basins. The days 

Included in the periods of ice effect and the days during the winter period on which discharge measurements were made are indicated in the table by symbols referring to footnotes.

For most of the gaging stations on streams in the area covered by this report the data 

presented comprise a description of the station, a table showing the daily discharge of 

the stream, and a table of monthly and yearly discharge and runoff. Skeleton rating 

tables are published for all stations except those at which the daily discharge for the 

greater .part of the year was determined by the shifting-control method, the slope method, 

or other special methods.

The description of the station gives the type of gage, Its latitude and longitude 

determined from the best available maps, and information in regard to diversions that , 

decrease the flow at the gage, artificial regulation from pondage or storage, and the 

accuracy of the records. Under "Average discharge" Is given the average discharge for the 

number of years indicated. It Is given only for stations for which there are 10 or more 

complete years of record. Under "Extremes" are given the maximum discharge and gage 

height; the minimum discharge If there is little or no regulation; the minimum daily discharge if there is extensive regulation (also the minimum discharge if useful); and the 

minimum gage height (unless it is of no importance). Unless otherwise qualified, the 

maximum discharge corresponds to the crest stage, obtained by use of a water-stage 

recorder or a nonrecording gage read at the time of the crest. Likewise the minimum discharge represents the lowest stage, unless otherwise qualified. Selected peak discharges 

with the tines of their occurrence are given below the table of monthly discharge for some
GEOLOGICAL, SURVEY WATER-SUPPLY PAPER 933 PLATE 1

A. SNAKE RIVER AT KING HILL, IDAHO.

B. SNAKE RIVER NEAR MURPHY, IDAHO.

C. SNAKE RIVER NEAR CLARKSTON, WASH.

GAGING-STATION STRUCTURES.
EXPLANATION OF DATA 3

stations. This supplementary information is generally omitted for stations having drainage areas of less' than 10 square miles or more than 10,000 square miles or If the peak 

discharges usually exceed the corresponding mean discharges for the day by less than 10 

percent.

For stations equipped with nonrecording gages, the table of daily discharge gives 

the discharge in secsnd-feet corresponding to once-daily readings of the gage or the mean 

of twice-daily readings. For flashy floods the daily mean discharge is determined from 

gage-height graphs based on gage readings made once or twice daily or oftener, as stated 

in the station description. For stations equipped with water-stage recorders, except those 

on streams subject to sudden or rapid fluctuation, the table gives the discharge corresponding to the daily mean gage height. For stations subject to such fluctuation the 

daily mean gage height may not indicate the true daily mean discharge, which must be obtained by averaging the discharge for parts of the day or by using the discharge integrator, an instrument for obtaining the dally mean discharge from a continuous gage-height 

graph and containing as an essential element a curve representing the stage-discharge 

relation at the station.

In the table of monthly discharge the column headed "Second-foot-days" gives the sum 

for each month of the figures given in the table of daily discharge. The column headed 

"Maximum" gives the maximum dally discharge and not the momentary discharge when the 

water surface was at crest stage. Likewise, in the column headed "Minimum" the quantity 

given is the minimum daily discharge. The column headed "Mean" gives the average flow 

in cubic feet per second-during the month.

For most gaging stations on lakes and reservoirs the data presented comprise a description of the station and a monthly summary table of stage and contents. For a few of the 

more important lakes and reservoirs a table showing daily contents is given. A skeleton 

table of capacity at given stages Is usually given in the first report in which data for 

a station are published but is omitted from succeeding reports.

ACCURACY OF FIELD DATA AND COMPUTED RESULTS

The accuracy of stream-flow data depends primarily on (1) the permanency of the stagedischarge relation and (2) the accuracy of observations of stage, measurements of flow, and 

interpretation of records.

The station description gives a statement In regard to the general accuracy of the 

records. "Excellent" indicates that, in general, the daily records are accurate within 

5 percent; "good," within 10 percent; "fair," within 15 percent; and "poor," within 20 or 

a higher percent.

Yield at some stations as indicated by monthly means may vary widely from natural yield, 

owing to diversion, consumption, regulation by storage, increase or decrease in evaporation due to artificial causes, or other factors. For such stations figures of "secondfeet per square mile" and "runoff In inches" are not published unless storage or diversion 

records are included Indicating the extent of the regulation or diversion or unless 

satisfactory adjustments can be made for changes in contents of reservoirs or for other 

changes incident to use and control. Figures of second-feet per square mile and runoff 

in Inches are also omitted if the drainage area includes large noncontributing areas or 

if the average annual rainfall over the drainage area is less than 20 inches.

Many gaging stations on streams in the Irrigated areas of the United States are situated above most of the diversions from those streams, and therefore the discharge recorded
4 ACCURACY OF FIELD DATA AND COMPUTED RESULTS

does not show the water supply available for further development, as prior appropriations 

below the station must first be satisfied.

The table of- monthly discharge presents In summary the distribution of the flow past 

the station. The table of dally discharge affords opportunity for more detailed studies 

of the variation in flow. As further observations In each succeeding year may be expected 

to throw new light on data previously published, It should be borne In mind that such data 

are subject to revision In succeeding water-supply papers.

PUBLICATIONS

The results of stream-flow measurements are now published annually in 14 parts, each 

part covering an area whose boundaries coincide with natural drainage features as Indicated 

below:

Part 1. North Atlantic slope basins (St. John River to York River).

2. South Atlantic slope and eastern Gulf of Mexico basins (James River to 

	Mississippi River).

3. Ohio River Basin.

4. St. Lawrence River Basin.

5. Hudson Bay and upper Mississippi River Basins.

6. Missouri River Basin.

7. Lower Mississippi River Basin.

8. Western Gulf of Mexico basins.

9. Colorado River Basin.

10. The Great Basin.

11. Pacific slope basins In California.

12. Pacific slope basins In Washington and upper Columbia River Basin.

13. Snake River Basin.

14. Pacific slope basins In Oregon and lower Columbia River Basin.

Water-supply papers and other publications of the Geological Survey containing data on 

the water resources of the United States may be obtained or consulted as explained below.

1. Copies may be purchased at nominal cost from the Superintendent of Documents, 

Government Printing Office, Washington, D. C., who will, on application, furnish lists 

giving prices.

2. Sets of the reports may be consulted In the libraries of the principal cities In 

the United States.

3. Sets are available for consultation in the local offices of the water-resources 

branch of the Geological Survey as follows:

East of the Mississippi River:

Albany, N. Y., 526 Federal Building.

Ashevllle, N. C., 220 Post Office Building.

Atlanta, Ga., 5 North Rhodes Center.

Augusta, Maine, Statehouse.

Baton Rouge, La., 124 Geology Building, Louisiana State University.

Boston, Mass., 945 Post Office Building.

Charleston, W. Va., 408 Union BuiMlng.

Charlottesville, Va., House G, Dawson Row, University of Virginia.

Chattanooga, Term., 442 Post Office Building.

College Park, Md., Engineering Building, University of Maryland.

Columbia, S. C., 119 United States Courthouse.

Columbus, Ohio, 404 Engineering Experiment Station, Ohio State University.

Harrlsburg, Pa., 490 Education Building.

Hartford, Conn., 225 Capitol Building, 410 Asylum Street.

Indianapolis, Ind., 511 Board of Trade Building.

Jackson, Miss., 208 Mlllsaps Building.

Louisville, Ky., 652 Federal Buildmg.

Madison, Wls., 666 State Office Building.

Montgomery, Ala., 507 Post Office Building.

Ocala, Fla., 302 Post Office Building.

St. Paul, Minn., 808 New Post'Office Building.

Trenton, N. J., 228 Federal Building.

Urbana, 111., 14 Post Office Annex, Elm Street.

West of the Mississippi River:

Austin, Tex., 302 West 15th Street.

Bblse, Idaho, 429 Federal Building.

Denver, Colo., 230 Customhouse.

Fort Smith, Ark., 6 Post Office Building.

Helena, Mont., 408 Federal Building.

Honolulu, Hawaii, 225 Federal Building.

Idaho Falls, Idaho, 204 Federal Building.

Iowa City, Iowa, 508 Hydraulic Laboratory, University of Iowa.
PUBLICATIONS

Lincoln, Nebr., 1404 Statehouse.

Los Angeles, Calif., G-33 United States Post Office and Courthouse.

Oklahoma City, Okla., 303 Capitol Office Building. . **»* « m».

and Metallurgy. 

St. Louis, Mo., 926 New Federal Building. 

Salt Lake City, Utah., 303 Federal Building. 

San Francisco, Calif., 625 Market Street Building. 

Santa Fe, N. Mex., 204 United States Courthouse. 

Tacoma, Wash., 1100 Washington Building. 

Topeka, Kans., 305 Federal Building. 

Tucson, Ariz., 210 Post Office Building.

A list of the Geological Survey publications may be obtained by applying to the 

Director, Geological Survey, Washington, D. C.

Records of flow of streams in the United States have been published in the reports 

tabulated as follows:

Stream-flow data In reports of the Geological Survey 

(A » Annual Report; B « Bulletin; W » Water-supply Paper)

Report

10th A, pt. 2 

llth A, pt. 2 

12fch A, pt. 2 

I3th A, pfc. 3 

14th A, pt. 2 

B 131........

16th A, pt. 2 

B 140........

W 11.........

ISth A, pt. 4

W 16.........

19th A, pt. 4 

W 27.........

20th A, pt. 4 

W 35 to 39...

21st A, pt. 4 

W 47 to 52...

22d A, pt. 4 

W 65, 66.....

Character of data

Descriptive Information only.

Monthly discharge and descriptive Information.

....do........................................

.do.

Monthly discharge (long-time records, 1371-93).. 

Descriptions, measurements, gage heights, and

ratings.

Descriptive Information only. 

Descriptions, measurements, gage heights,

ratings, and monthly discharge (also many data

covering earlier years). 

Gage heights (also gage heights for earlier

years). 

Descriptions, measurements, ratings, and monthly

discharge (also similar data for some earlier

years). 

Descriptions, measurements, and gage heights of

streams east of the Mississippi River and

Missouri River and tributaries above Kansas

River. 

Descriptions, measurements, and gage heights of

streams west of the Mississippi River except

Missouri River and tributaries above Kansas

River. 

Descriptions, measurements, ratings, and monthly

discharge (also some long-time records). 

Measurements, ratings, and gage heights of

streams east of the Mississippi River and

Missouri River and tributaries. 

Measurements, ratings, and gage heights of

streams west of the Mississippi River except

Missouri River and tributaries. 

Monthly discharge (also for many earlier years). 

Descriptions, measurements, gage heights, and

ratings. 

Monthly discharge...............................

Descriptions, measurements, gage heights, and

ratings. 

Monthly discharge...............................

Descriptions, measurements, gage heights, and

ratings. 

Monthly discharge...............................

1884 to Sept. 1S90 

13S4 to June 30, 1S91. 

18S4 to Dec. 31, 1892. 

1S88 to Dec. 31, 1393. 

1393-94.

1896. 

1895-96.

1900.

1901.

1901.

Hote.- Reports containing records for years after 1901 ane given In table on page 6. 

The table on the following page gives, by years and^drainage basins, the numbers of 

the papers on surface water supply published from 1899 to 1941. The data for any particular station will, in general, be found in the reports covering the years during 

which the station was maintained. For axample, the data for 1910 to 1920 for any station 

In the area covered by part 3 are published in water-supply Papers 283, 303, 323, 353, 

403, 433, 453, 473, 503, which contain records for the Ohio River Basin for those years.

The records at most of the stations discussed in these reports extend over a series of 

years. Miscellaneous measurements at many points other than regular gaging stations have 

been made each year and are published under "Miscellaneous discharge measurements" at the 

end of each report, the streams and points of measurement listed appearing in the same 

relative order as the streams and gaging stations in the body of the report. An index of 

the records obtained prior to 1904 has been published In Water-Supply Paper 119.

Each of the reports on surface water supply for the year 1939, issued as Water-Supply 

Papers 871 to 884 (see table on p. 6 ), contains a summary of yearly discharge at gaging
Numbers of water-supply papers containing results of stream 

(For basins included see p. 4)

Year

1899 a... 

1900 jj... 

1901..... 

1902 ..... 

1903.....

1904..... 

1905..... 

1906..... 

1907-8... 

1909 .....

1910 ..... 

1911..... 

1912..... 

1913..... 

1914.....

1918..... 

1916..... 

1917..... 

1918..... 

1919-20..

1921 ..... 

1922 ..... 

1923 ..... 

1924..... 

1925.....

1926..... 

1927..... 

1928..... 

1929..... 

1930.....

1931 ..... 

1932..... 

1933..... 

1934..... 

1935.....

1936..... 

1937..... 

1938..... 

1939 ..... 

1940..... 

1941.....

1

36 

47, h48 

65, 75 

82 

97

0124, p!25, q!26 

o!65, p!66, q!67 

0201, p202, q203 

241 

261

281 

301 

321 

351 

381

461 

431 

451 

471 

501

521 

541 

561 

581 

601

641 

661 

681 

696

711 

726 

741 

756 

'81

801 

821 

851 

871 

891 

921

2

b35, -36 

48 

65, 75 

b82, 83 

t>97. 98

q!26, 127 

q!67, 168 

0203, 204 

242 

262

282 

302 

322 

352 

382

402 

432 

452 

472 

502

522 

542 

562 

582 

602

642 

662 

682 

697

712 

727 

742 

757 

782

802 

822 

852 

872 

892 

922

3

36 

48, 149 

65, 75 

83

169 

205 

243 

263

283 

303 

323 

353 

383

403 

433 

453 

473 

503

523 

543 

563 

583 

603

643 

663 

683 

698

713 

728 

743 

758 

783

803 

823 

853 

873 

893 

923

4

36 

49 

65, 75 

m82, 83 

97

129 

170 

206 

244 

264

284 

304 

324 

354 

384

404 

434 

454 

474 

504

524 

544 

564 

584 

604

644 

664 

684 

699

714 

729 

744 

759 

784

804 

824 

854 

874 

B9A 

924

5

36 

49 

k65, 66, 75 

k83, 85 

k98. 99. nlOO

k!28, 130 

171 

207 

245 

265

285 

305 

325 

355 

385

405 

435 

455 

475 

505

525 

545 

565 

585 

605

625 

645 

665 

685 

700

715 

730 

745 

760 

785

805 

825 

855 

875 

895 

925

6

036, 37 

49, J50 

66, 75 

84 

99

130, r!31 

172 

208 

246 

266

286 

306 

326 

356 

386

406 

436 

456 

476 

506

526 

546 

566 

586 

606

626 

646 

666 

686 

701

716 

731 

746 

761 

786

806 

826 

856 

876

896 

926

7

37 

50 

k65, 66, 75 

k83, 84 

k98. 99

kl28, 131 

k!69, 173 

k205, 209 

247 

267

287 

307 

327 

357 

387

407 

437 

457 

477 

507

527 

547 

567 

587 

607

627 

647 

667 

687 

702

717 

732 

747 

762 

787

807 

827 

857 

877 

897 

927

a Rating tables and index to Water-Supply Papers 35-39 contained in Water-Supply 

Paper 39. Tables of monthly discharge for 1899 In 21st Annual Report, part 4. 

b James River only, 

c Oallatin River.

d Oreen and Ounnison Rivers and Colorado River above Ounnison River, 

e M9Jave River only, 

f Kings and Kern Rivers and south Pacific slope basins.

f 

Rating tables and Index to Water-Supply Papers 47-52 and data on precipitation, 

Is, and irrigation in California and Utah contained in Water-supply Paper 52. 

Monthly discharge for 1900 in 22d Annual Report, part 4. 

h Wissahiekon and Schuylkill Rivers to James River, 

i Scioto River.

j Lou

k Tri

m Lak

n Hud

o New 

p Hud

q Sus

r Pla

s The 

Basins.

t Bel

u Rog
PUBLICATIONS

stations in the area covered by that report. Gaging stations at which 10 or more complete years of record have been collected are represented. These summaries are available 

also as Separate reprints.

From tine to time reports have been published that are compilations of records for 

various.areas, usually a single State or drainage basin. These reports contain records 

previously published (some of which have been revised), as well as some records not contained in the annual series of water-supply papers. The following table gives the numbers and titles of these reports, arranged in alphabetical order by States and drainage 

basins.

Reports containing compilation of discharge by States and drainage basins

Water-Supply 

Paper

107

298

299

300

447

597-E

656-D

636-E

637-A

74

197

415

25O

370

860

424

492

870

469

396

617

617

618

198

491

536

279

192

358

491

109

Year 

ending

1903

1912

1912

1912

1913

1927

1927

1927

1927

1900

1905

1916

1906

1910

1937

1916

1919

1935

1921

1914

1927

1920

1926

1906

1917

1920

1909

1906

1913

1917

1904

State or drainage basin and title

STATE

Alabama, Water powers of, with an appendix on stream measurements

In Mississippi.

California, Water resources of, part 1, Stream measurements In

Sacramento River Basin.

California, Water resources of, part 2, Stream measurements In

San Joaquin River Basin.

California, Water resources of, part 3, Stream measurements In

the Great Basin and Pacific coast river baalns.

California, southern, Surface water supply of Pacific slope of.

California, Surface water supply of Sacramento River Basin.

California, Surface water supply of San Joaquln River Basin.

California, southern, Surface water supply of Pacific slope

basins in.

California, Surface water supply of minor San Francisco Bay,

northern Pacific, and Great basins in.

Colorado, Water resources of.

Georgia, Water resources of.

Massachusetts, Surface waters of.

Nebraska, Surface water supply of.

Oregon, Surface water supply of.

Texas, Summary of records of surface waters of.

Vermont, Surface waters of.

Washington, Summary of hydrometrie data in.

Washington, Summary of records of surface waters of.

Wyoming, Surface waters of, and their utilization.

DRAINAGE BASIN

Colorado River (Aria., Colo., N. Hex., Utah, Wyo.) and its

utilization.

Colorado River, upper (Colo., Utah), and its utilization.

Great Salt Lake Basin, Water powers of.

Green River (Utah, Wyo.) and its utilization.

Eennebec River Basin (Maine), Water resources of.

Hllk River. (See St. Hary and MlUc Rivers.)

New-Kanawha River Basin (N. C., Va., W. Va.), Surface Water

Supply of.

Fenobscot River Basin (Maine), Water resources of.

Fotomac River Basin (D. C., Md., W. Va. )

Rio Grande Basin (Colo., N. Hex., Tex.), Water resources of, 1388-

1913.

St. Hary and Milk Rivers (Mont., Canada), Water supply of.

Susquehanna River Basin (Pa., Md.,), Hydrography of.

Records of discharge have been published also in state reports. Some of these are 

not contained in the publications of the Geological Survey or are revisions of records 

previously published in its water-supply papers. The following table contains a list 

of these reports.

State reports containing compilation of records of discharge

State

Alabama.....

Connecticut.

Georgia.....

Indiana .....

Year 

ending

1916

1926

1906^ 

1920

1927

1932

Report

Bull. 17, Water powers of Alabama....

Bull. 44, Water resources of 

Connecticut .

Bull. 16, Water powers of Georgia....

Pub. 72, Surface water supply of 

Indiana.

Indiana.

Issued by

Geological Survey of Alabama.

State Geological and Natural 

History Survey.

Commission. 

Geological Survey of Georgia.

Department of Conservation.

Iowa State Planning Board.

a Includes records of monthly discharge 

In second-feet per square mile for 

years 1912-33.

b Includes records for years 1907-18. 

o Includes records for years 1927-30.
PUBLICATIONS

State reports containing compilation of records of discharge Continued

State

Kentucky. . . 

Maryland ....

Minnesota... 

Missouri. ...

Nebraska....

Hem Jersey..

Hem Mexico. . 

North Carolina.

North Dakota

Do.......

Pennsylvania

Tennessee...

Virginia.... 

Washington. . 

Wisconsin. ..

Tear 

ending

1919 

1924* 

19288

1936f 

19398 

1920 

1937

1912 

1926 

1939h 

1914

19281 

1928

1934J

1925 

1923

1936k 

1920

19S71 

1921m

1939n

1914 

1924° 

1930P 

19361 

1911 

1932r 

1924 

1930s

1905 

1910 

1916 

1927

1933 

1914

1923*

Report

Surface waters of Kansas .............

Surface waters of Kentucky. .......... 

Flow data and draft storage curves 

for major streams In Maryland.

Mater-resources investigation of 

Minnesota. 

Vol. 20, 2d series, Water resources 

of Missouri. 

Vol. 26, 2d series, Surface waters 

of Missouri.

Bull. 33, Surface water supply of 

New Jersey. 

Special Report 6, Surface water 

supply of New Jersey. 

Surface water supply of New Mexico . 

Bull. 34, Discharge records of North 

Carolina streams. 

Bull. 39, Discharge records of North 

Carolina streams. 

Report to Governor of North Dakota 

on flood control. 

Surface water in North Dakota ........

Bull. 200, Compilation of stream- flow 

records of Ohio.

Bull. 4, Water resources of the State 

 of Oregon. 

Bull. 7, Water resources of the State 

of Oregon. 

Bull. 8, Mater resources of the State 

of Oregon. 

Bull. 9, Water resources of the State 

of Oregon. 

Report of the Water Supply Commission 

of Pennsylvania. 

Stream-flow records of Pennsylvania..

Bull. 34, Mater -resources of 

Tennessee. 

Bull. 40, Surface waters of 

Tennessee. 

5th biennial report. State Engineer. . 

7th biennial report. State Engineer. . 

10th biennial report, State Engineer. 

Bull. 31, Water resources of 

Virginia. 

Bull. 5, Monthly and yearly summaries 

of hydrooetrlc data. 

1st report of Railroad Commission of 

Wisconsin to Legislature on water 

powers. 

2d report of Railroad Commission of 

Wisconsin to Legislature on water 

powers.

Issued by

Kansas Mater Commission. 

Do. 

Kansas State Board of 

Agriculture. 

Do. 

Do. 

Kentucky Geological Survey. 

State Planning Commission 

and Water Resources Commission. 

State Drainage Commission.

Missouri Geological Survey , 

and Water Resources. 

Do.

Bureau of Water Power, Irrigation, and Drainage. 

Do. 

Department of Conservation 

and Development. 

State Water Policy 

Commission. 

Office of the State Engineer. 

Department of Conservation 

and Development. 

Do.

State chief engineer.

State Planning Board. 

Engineering Experiment Station, Ohio State University. 

Department of Agriculture, 

Division of Conservation 

and Natural Resources. 

Office of tlie Stat'-. Engineer.

Do. 

So. 

Do.

Water Supply Commission of 

Pennsylvania. 

Department of Forests and 

Waters. 

Department of Education.

Do.

Office of the State Engineer. 

Do. 

Do. 

Conservation Commission.

Department of Conservation 

and Development. 

Railroad Commission of 

Wisconsin.

Do.

a Includes records of monthly discharge k Includes records for years 1889-1936; 

In second-feet per square mile for records of dally and monthly dlsyears 1912-33. charge are not Included, 

b Includes records for years 1907-18. 1 Includes records for years 1882-1937. 

c Includes records for years 1927-30. m Includes all available records prior to 1921 

d Includes records for years 1919-24. n Includes records for years 1902-39. 

e Includes records for years 1924-28. o Includes records for years 1914-24. 

f Includes records for years 1928-36. p Includes records for years 1924-30. 

g Includes records for years 1935-39. q Includes records for years 1930-36. 

h Includes records for years 1927-39. r Includes records for years 1928-32. 

1 Includes records for years 1914-28. s Includes average weekly discharge for years 

j Includes records for years 1928-34. 1920-30. 

t Includes records for years 1914-23.

Note.- In addition to the records contained in the reports listed above, the following 

States have issued annual or biennial reports in which arp contained records of discharge: 

California, Colorado, Connecticut, Idaho, Indiana, Missouri, Montana, Nebraska, New Mexico, 

New York (also New York City Board of Water Supply), North Dakota, Oregon, Pennsylvania, 

Nevada, Washington, and Wyoming.

The reports listed in the foregoing tables contain the customary records of discharge 

collected during the systematic operation of gaging stations. Detailed information on 

the stage and discharge of many streams during major floods has been included in special 

reports on these floods published by the Geological Survey. The more recent of these 

reports also contain other pertinent hydrologic information and analyses and compilations 

of data relating to earlier noteworthy floods. The list on the following page gives the 

numbers and titles of these reports.
	PUBLICATIONS -y

Water-Supply

paper Title

88 The Passalc flood of 1902.

92 The Passalc flood of 1903.

96 Destructive floods In the United States In 1903.

147 Destructive floods In the United states In 1904.

162 ' Destructive floods In the United States In 1905.

334 The Ohio Valley flood of March-April 1913.

426 Southern California floods of January 1916.

487 The Arkansas River flood of June 3-5, 1921.

488 The floods In central Texas In September 1921.

520-G Some floods In the Rlcky Mountain region.

636-C The New England flood of November 1927.

771 Floods In the United States, magnitude and frequency.

773-E The New York State flood of July 1935.

796-B Flood on Republican and Kansas Rivers, May and June 1935.

796-C Flood In La Canada Valley, Calif., January 1, 1934.

796-Q Major Texas floods of 1935.

798 The floods of March 1936, Part 1, New England Rivers.

799 The floods of March 1936, Part 2, Hudson River to Susquehanna River region.

800 The floods of March 1936, Part 3, Potomac, James, and upper Ohio Rivers.

816 Major Texas floods of 1936.

836-A Stages and flood discharges of the Connecticut River at Hartford, Conn.

838 Floods of Ohio and Mississippi Rivers, January-February 1937.

842 Floods in Canadian and Pecos River Basins of New Mexico, May and June 1937.

843 Floods of December 1937 In northern California.

844 Floods of March 1938 in southern California.

847 Maximum discharges at stream-measurement stations through September 1938.

867 Hurricane floods of September 1938.

869 Flood of August 1935 in Musklngura River Basin, Ohio.

RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY

The following table contains a'list of gaging stations for the area covered by this 

report at which records of daily discharge were collected during the water year October 

1940 to September 1941 by agencies other than the Geological,Survey. The records for 

these stations are not contained In the publications of the Geological Survey except as 

noted.

Records of discharge collected by agencies other than the geological Survey

Stream

American Falls Reservoir, Inflow to. 

Antelope Reservoir. . .

Bully Creek. .........

Burnt River, South 

Pork of. 

Grand 9 Ronde River. . .

Indian Creek. ........

Island Park Reservoir, inflow to. 

Jack Creek. .......... 

 

Jordan Creek. ........ 

Lapwai Creek. ........

tittle Mlnan River...

Do ..............

Snake River 

tributaries. 

Teton Basin, inflow 

to and diversions 

in. 

Vallowa Lake Reservoir

Vebb Creek. ..........

Location

Near American Falls , Idaho. ...........

Sec. 32, T. 30 S. f R. 46 E. , near 

Banner, Or eg. 

SVi sec. 33, T. IB S., R. 44 E. , 6 

miles southwest of Vale, Oreg. 

Prior to spring of 1937 in sec. 20, 

6 miles west of Vale. 

SVi sec. 27, T. 13 S., R. 36 E. , near 

Unity, Oreg. 

NVi sec. 12, T. 35., R. 36 E. , at 

lower reservoir aite near La Srande, 

Oreg. 

Below Grassy Lake, near Moran, Wyo....

SE£ sec. 33, T. IS., R. 40 E., above 

North Indian Creek, near Imbler, 

Oreg. 

Near Island Park, Idaho. ..............

SE-J sec. 26, T. 30 S., R. 44 E.,33 

miles southeast of Banner, Oreg. 

9 miles west of Jordan Valley, Oreg. . . 

Near Sweetwater, Idaho. ...............

SEi sec. 27, T. 3 S., R. 41 E., 10 

miles east of Cove, Oreg. 

Below Nevada Dam, near Vale, Oreg..... 

SWi sec. 32, T. 20 S-, R. 41 E., near 

Namorf , Oreg .

Near Driggs, Idaho. ...................

At outlet, near Joseph, Oreg, .........

Below Wallowa Lake, Oreg. ............. 

Near Sweetwater, Idaho. ...............

Period

1927-28, 1932-41.

1926-27, 1930, 

1932-41.

193S-41t. ........

1941............. 

1938-41..........

1935-41. .........

1925, 1930, 

1932-41. 

1930, 1932-41t.. . 

1940-41..........

1934, 1936-41t-.. 

1931-41t. . ...

1941

1934-41..........

1925-41t......... 

1926-41t. ........

Collected by

Idaho Vater District 36. 

Oregon State 

engineer. 

Do.

Do. 

Do.

Idaho Water District 36. 

Oregon State 

engineer.

Idaho Vater District 36. 

Oregon State 

engineer. 

Do. 

Bureau of Reclamation. 

OroRon State 

engineer. 

Do. 

Do.

Idaho Vater District 36. ' 

Do.

Oregon State 

engineer. 

Do. 

Bureau of Reclamation.

t Records for some earlier years published in water-supply papers of the Geological Survey.

Note.- Of the records for the stations operated by the Oregon State engineer, those for 1926-30 

are published in Bulletin S of the State engineer, and those for 1931-36 (including some to 

December 1936) in Bulletin 9; those for 1937-41 have not been published.

Records for the stations operated by Idaho Water District 36 are published In the annual reports 

of that organization.

The Soil Conservation Service began in 193S to make studies of run-off from two areas of less 

than 220 acres each In the vicinity of Emmett, Idaho, and from two areas of less than ISO acres each 

in the vicinity of Moscow, Idaho. The records are In the files of that organization.
10 COOPERATION

The work in the several States was done under cooperative agreements with the organizations listed below.

Idaho: Department of Reclamation, James Spofford and E. Vl Berg, commissioners. 

Oregon: Office of the State engineer, Charles E. Stricklin.

Washington: State Department of Conservation and Development, John Brooke Fink 

and Ed. Davis, directors, and C. J. Bartholet, supervisor of hydraulics.

Wyoming: Office of the State engineer, L. C. Bishop.

Funds were furnished by the Corps of Engineers, United States Army, for the construction and maintenance of two gaging stations in Idaho.

Financial assistance was also furnished by the Office of Indian Affairs and the Bureau 

of Reclamation of the United States Department of the Interior; the Flood Control Coordinating Committee, the Soil Conservation Service, and the Forest Service of the United 

States Department of Agriculture; the Federal Power Commission; and the Weather Bureau 

of the United States Department of Commerce.

Assistance in collecting records was rendered also by the following municipality, 

counties, organizations, corporations, and individuals:

Idaho: City of Pocatello, Idaho Power Co., Lake Irrigation District, Washington 

Water Power Co., Board of Control for Boise Project, Bradley Mining Co., western 

States Utilities Co., Idaho Water District 36, North Side Canal Co., Twin Falls 

Canal Co., Jackson Hole Light and Power Co., Utah Power & Light Co., and watermasters for Big Lost, Little Lost, Big Wood, Little Wood, Boise, Lake Fork of 

Payette, and Weiser Rivers and Mud Lake.

Oregon: Warmsprlngs Irrigation District; Malheur, Baker, Union, and Wallowa 

Counties; Eastern Oregon Light & Power Co.; Inland Power & Light Co., arid the 

Grazing Service of the United States Department of the Interior. 

Washington: Washington Water Power Co.

DIVISION OF WORK

The stream-gaging work was conducted by the water resources branch of the Geological 

Survey, Glenn L. Parker, chief hydraulic engineer, Carl G. Paulsen, assistant chief 

hydraulic engineer, and Rudolph G. Kasel, chief of the division of surface waters. The 

data for the stations in the several States were collected and prepared for publication 

under supervision of district engineers as follows: In Idaho (for Snake River at and 

above Milner, and for stations on tributaries that enter Snake River above American Falls 

reservoir), Lynn Crandall; for all other stations in Idaho, for stations in Salmon Falls 

Creek Basin in Nevada, and for Snake River at Oxbow, Oreg., T. R. Newell; in Oregon, 

(except for the Snake River at Oxbow), G. H. Canfield, the work being done In collaboration 

with C. E. Stricklin, State engineer; in Washington, F. M. Veatch; In Wyoming, Robert 

Follansbee; and in Nevada, (except for the stations in the Salmon Falls Creek Basin), 

A. B. Purton.

The records were reviewed and the manuscript prepared for publication under the direction of B. J. Peterson, engineer In charge, and M. C. Boyer, associate engineer, section 

of reports.
GAGING STATION RECORDS 11

SNAKE RIVER MAIN STEM 

Jackson Lake at Moran, Wyo.

Location.- Electric tape gage, lat. 43°51', long. 110°35', in sec.~18, T. 45 N., R. 114 W., 

at dam on Snake River at Moran. Datum of gage is at mean sea level (levels by Bureau 

of Reclamation). Prior to June i, 1940, staff gage short distance upstream from dam at 

same datum.

Drainage area.- 816 square miles.

Records available.- July 1908 to September 1941 (1908-10, fragmentary).

Extremes.- Maximum contents during year, 679,200 acre-feet June 26 (elevation, 6,762.27 

reetj; minimum, 167,320 acre-feet Oct. 1 (elevation, 6,739.22 feet).

1908-41: Maximum contents, 857,220 acre-feet June 23, 1937 (elevation, 6,769.40 

feet); no usable contents on several days in period August to October 1919 (elevation, 

6,730.00 feet).

Remarks.- Reservoir was formed in 1906 by log crib dam with a usable capacity of 300,000 

acre-feet. This dam was washed out in July 1910 and replaced by an earth dam, forming 

a reservoir with a usable capacity of 380,000 acre-feet. The earth dam was raised in 

1916 increasing the usable capacity to 790,000 acre-feet. In 1917, by dredging the outlet, the capacity was further increased to 847,000 acre-fe^t between elevations 6,730 

feet (top of baffles in sluices) and 6,769 feet (top of spillway gates) above mean sea 

level. Water is used for irrigation in Snake River Valley, Idaho. Gage read once 

dally at 7 a.m. during irrigation season and at 8 a.m. during rest of year. Contents 

as given herein are computed from elevation at those times; all available for release.

Cooperation.- Reservoir elevations and capacity table furnished by Bureau of Reclamation.

Contents, in acre-feet, water year October 1940 to September 1941

D«y

i

2

5

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

SO

Si

22

23

24

25

26

27

28

29

30

31

Oct.

167,320

163,880

169,560

170,830

172,000

172,590

173,560

174,340

174,920

175 ,700

176 ,4SO

177,260

173,040

178,630

179,410

180,190

180 ,970

131,360

1S1 ,750

182,140

162,520

132,920

183,520

184,110

184,900

165,690

1S7 ,030

188,660

1S9 ,650

190,450

191,240

HOT.

192,630

194,010

194 ,300

195,990

196 ,780

197 ,5SO

198,370

199 ,360

200,550

20J ,140

201,740

202,130

202,330

202,730

202,930

203 ,130

203 ,940

204,340

205,350

205,950

206,750

207,360

207,960

208,560

209,170

209,770

210,770

211,580

212,780

214,390

-

Dec.

214,300

215 ,400

215, 300

216,000

216 ,400

216 ,S1<5

217,210

217 ,610

218,010

213,410

21S,S20

219,020

219,420

219 ,320

220,220

220,630

221,030

222,430

223,450

224,470

225,290

225 ,700

226 ,310

228,350

229,570

230,590

231,820

233 ,860

234,670

235,280

236,100

Jan.

237,120

237,630

233,140

238,550

239 ,570

240 ,590

241,400

241,310

242 ,420

244,280

246,100

245,9^0

246 ,960

243,000

249,240

250,270

251 ,100

251 ,930

253,750

253 ,580

253,990

254, 320

256 ,060

256 ,4SO

257 ,100

253,130

259,160

259,990

260,610

261,230

261 ,850

Pel).

262,470

263,090

263 ,710

264,130

264,760

265,390

266 ,020

266,650

267,900

268,950

270 ,000

271,250

271,880

272,720

273 ,140

273 ,350

273 ,770

275 ,020

275 ,650

276,280

276 ,910

277,960

278,790

279,630

280,390

2S1 ,730

282,360

282,930

«

_

-

liar.

284,660

285,090

285,300

285,720

286,150

286 ,780

287,210

287 ,630

288,270

288,900

289,330

289,540

289,960

290,600

291,030

291,450

291,370

292,510

292,930

293 ,730

294,210

294,630

295,690

296,330

296,750

297,180

297,810

298 ,450

299,080

299,720

300,360

Apr.

300,990

301 ,840

302,480

303,330

304 ,180

305 ,240

306 ,090

306 ,730

307 ,380

303,240

303,830

309,740

310,810

311,670

312,530

313 ,810

315 ,750

316 ,820

317,460

313,110

313,970

319,610

320 ,470

321,750

322,830

324,330

326 ,050

327,550

329,720

332,110

-

May

335,370

333,620

343,180

347,520

353 ,420

357,590

360,440

365,710

369,430

373 ,410

377,340

383,330

338,470

403,630

414,610

422,030

427,210

433,980

440,090

445,770

451,460

453,050

464,680

473 ,340

434,390

496,390

503,410

518,870

527,470

535 ,870

543 ,130

June

550,620

556,720

562,330

567 ,560

572,270

573 ,410

583 ,370

590,980

596 ,440

602,860

607 ,640

612,890

618,140

622,200

628,200

635,900

641 ,430

650 ,340

656 ,380

662,450

668,990

671 ,170

672,860

675,300

677,930

679,200

673,230

673,840

670,630

668 ,260

-

July

666 ,O.SO

661 ,960

661,000

662,930

662,210

656 ,400

649 ,130

641,910

633,250

624,120

614,560

605 ,480

597 ,160

537,660

579,360

570,860

560,960

550,150

539,620

530,020

520,490

512,590

505 ,400

496,620

487 ,160

479,120

472,470

464 ,910

459 ,640

454,420

448 ",960

Aug.

441,000

431,05C

420,670

410,560

400,730

390,680

331,160

372,300

364,610

353,910

352,550

351,670

352,330

352,330

352,110

352,550

351,670

350,140

349,700

349,700

343,600

342,960

336,020

330,160

323 ,690

318,750

314,670

312,100

303,020

303 ,750

299,510

Sept.

295,270

290, 39C

234, 66C

277,35C

269,370

261,640

255, 44C

250,270

245,72C

242,330

239 ,57<

235,490

232,840

230,590

228,550

227,130

225 ,29C

223 ,360

223,250

222,030

219,320

217, 61C

216 ,000

215,800

217,210

219, SEC

221,830

223,250

224, 47C

226, 11C

-

Monthly elevation and contents, water year October 1940 to September 1941

Bate

Dec. 31........... ........

Sept. 30. ...................

Elevation 

(feet)

6,741.60

6,742.67

6,742.18

Contents 

(acre-feet)

214,390

236 ,100

261,850

226,110

Change In contents 

during month 

(acre-feet)

+23,150

+21 ,710

-128,730

+25,750

+17,380

+31 ,760

+125,130

-149,450

-73,400

+59,760
12 SNAKE RIVER MAIN STEM

Snake River at Moran, Wyo.

Location.- Water-stage recorder, lat. 43°51', long. 110°35', In sec. 18, T. 45 N., R. 

114 w., at Moran, 1,000 feet downstream from Jackson Lake Dam. Datum of gage Is 

6,735.61 feet above mean sea level (Bureau of Reclamation bench mark).

Drainage area.- 816 square miles.

Records available.- September 1903 to September 1941.

Average discharge.- 38 years, 1,414 second-feet (unadjusted).

Extremes.- Maximum discharge during year, 6,800 second-feet July 18 (gage height, 8.37 

feet); minimum, 12 second-feet May 10-13 (gage height, 1.12 feet).

1903-41: Maximum discharge, 15,100 second-feet June 12, 1918 (gage height, 10.41 

feet, site and datum then In use); practically no flow for a few days In 1907 and 

1909.

Remarks.- Records excellent except those for periods when gates at dam were closed, 

which are fair. Flow regulated by Jackson Lake (see p. n ).

Cooperation.- Gage-height record and results of two discharge measurements furnished by 

Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

24 

24 

21 

21

21

21 

21 

21 

21

21

21 

21 

21 

21 

21

21 

21 

21 

21

21

21

21 

21 

21 

21

21 

21 

21 

21 

21 

21

Nov.

21 

21 

21 

21 

21

21

21 

21 

21 

21

21 

21 

21 

21 

21

21 

21 

21 

21

21

21 

21 

21 

21

21

21 

21 

21 

21 

21

Dec.

21 

21 

21 

21 

21

21 

21 

21 

21

21

21 

21 

21 

21 

21

20 

20 

20 

20 

19

19 

18 

18 

18 

18

18 

18 

18 

18 

IB 

18

Jan.

18 

18 

18 

18 

17

17 

17 

16 

IS 

16

18 

18 

18 

18 

18

18 

18 

18 

18 

18

18 

17 

17 

17 

17

17 

17 

17 

18 

18 

18

Feb.

18 

18 

16 

18 

17

17 

17 

17 

17 

17

17 

17 

17 

18 

18

18 

18 

18 

17 

17

17 

17 

17 

17 

17

17 

17 

17

Month

Oct 

Non 

Dec

C

Jan 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

1

alendar year 19' 0.. ....................

ater year!940-£

Mar.

18 

18 

IS 

18 

18

18 

18 

IS 

IS 

18

18 

16 

16 

IS 

IS

IS 

18 

18 

18 

18

18 

18 

18 

18 

18

18 

IS 

18 

18 

18 

18

Apr.

19 

19 

19 

19 

19

19 

19 

20 

20 

20

20 

20 

20 

20 

20

20 

20 

20 

20 

20

20 

20 

20 

20 

20

20 

20 

20 

20 

20

Secondfoot -days

657 

650 

613

474,203

548 

485 

558 

593 

7,240 

30,661 

153,214 

107,059 

60,805

363,063

May

19 

19 

IS 

18 

17

16 

15 

14 

13 

12

12 

12 

12 

19 

20

21

312 

1,080 

929 

558

552 

1,400 

1,260 

520 

223

32 

24 

24 

24 

24 

21

Maximum

24 

21 

21

8,110

18 

18 

18 

20 

1,400 

3,980 

6,720 

6,280 

4,890

6,720

June

20 

209 

S65 

1,670 

1,470

959 

306 

26 

25 

24

24 

300 

1,210 

1,280 

422

24 

21 

20 

18 

198

1,390 

1,900 

1,480 

1,100 

1,040

1,970 

3,300 

3,980 

3,010 

2,400

July

3,180 

2,960 

234 

1,310 

3,870

5,260 

5,750 

5,780 

6,110 

6,090

6,120 

5,920 

5,770 

5,730 

5,70O

5,940 

6,580 

6,780 

6,670 

6,310

5,650 

5,130 

5,310 

5,400 

5,430

4,990 

4,600 

4,050 

3,010 

3,400 

4,140

Minimum

21 

21 

18

18

17 

17 

18 

19 

12 

18 

284 

854 

18

12

Aug.

6,020 

6,280 

6,060 

6,020 

5,750

5,560 

5,480 

5,420 

5,210 

4,810

3,580 

1,240 

868 

854 

864

963 

1,340 

1,340 

1,340 

1,460

2,890 

4,050 

4,030 

4,020 

3,820

3,430 

2,880 

2,550 

2,710 

3,160 

3,070

Mean

21.2 

21.0 

19.8

1,296

17.7 

17.3 

18.0 

19.8 

234 

1,022 

4,948 

3,454 

2,027

995

Sept.

3,020 

3,330 

4.3OO 

4,890 

4,540

4,200 

3,760 

3,010 

2,480 

2.53O

2,610 

2,420 

1,900 

1,890 

1,880

1,860 

1,670 

1,470 

1,760 

2,180

1,940 

1,740 

1,060 

242 

22

Iff 

18 H

18

IS

Run-off In 

aere-fe»t

1,300 

1.250 

1,220

940, 900

1.090 

962 

1,110 

1,180 

14,360 

60,880 

303,900 

212,300 

120,600

720,100

Hote.- Stage-diecharge relation affected by Ice Dec. 15 to Apr. 

to Hay 16, May 26 to June 1, June 8-11, 16-19, Sept. 25-3Q.

5. Gates at dam closed Oct. 1
SNAKE RIVER MfcIN STEM 13

Snake River at Calamity Point, near Irwin, Idaho

Location.- Water-stage recorder, lat. 43019'35B , long. lll°ll'40n , in SWi sec. 16, T.

 1 S., R. 45 E., 400 feet upstream from Bear Creek, 5,800 feet upstream from- Calamity 

Point dam site, and 7i miles southeast of Irwln. Altitude of gage, 5,387 feet 

(from river profile map).

Drainage area.- 5,110 square miles.

Records available.- April 1934 to October 1936, April 1939 to September 1941 (discontlnuedj.

Extremes.- Maximum discharge during year, 13,600 second-feet May 27 (gage height, 5.25

 feet); minimum dally, 1,520 second-feet Jan. 3, Mar. 15.

1934-36, 1939-41: Maximum discharge, 27,500 second-feet June 1, 1936 (gage 

height, 8.65 feet); minimum dally, that for Jan. 3, 1941.

Remarks.- Records good. Flow partly regulated by Jackson Lake (see p. li). Many 

small diversions from tributaries above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

1C

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26

27 

2S 

29 

30 

31

Oct.

2,510 

2,400 

2,470 

2,490 

2,360

2,320

2,2SO 

2,280 

2,410 

2,300

2,240 

2,200 

2,170 

2,160 

2,140

2,110 

2,100 

2,OSO 

2,070 

2,050

2,050 

2,040 

2,030 

*fi,010 

2,010

2,030 

2,220 

2,360 

2,260 

2,220 

2,200

Nov.

2,230 

2,200 

2,280 

2,230 

2,140

2,140 

2,130 

2,220 

2,200 

2,170

2,110 

2,000 

dl,940 

32,000 

dl,970

dl,960 

dl,970 

dl,980 

2,000 

#1,900

1,900 

1,940 

1,900 

1,330 

1,910

1,S60 

1,330 

1,910 

1,970 

2,030

Dec.

1,900 

1,900 

1,900 

1,900 

1,370

1,890 

1,370 

1,840 

1,340 

1,780

1,780 

1,800 

1,740 

1,750 

1,570

1,570 

1,740 

1,370 

*1,S20 

1,760

1,750 

1,750 

1,750 

1,790 

1,760

1,750 

1,780 

1,760 

1,730 

1,740 

1,760

Jan.

1,650 

1,560 

KL,520 

bl,530 

bl,710

bl,900 

bl,840 

bl,750 

bl,690 

bl,760

bl,750 

bl,680 

bl,630 

bl,760 

1,930

1,890 

1,760 

1,700 

1,700 

1,730

1,700 

1,700 

1,710 

*1,690 

1,660

1,680 

1,650 

1,590 

1,550 

1,560 

1,550

Feb.

bl,530 

bl,530 

bl,530 

bl,540 

1,560

1,640 

1,620 

1,620 

1,620 

*1,640

1,640 

1,600 

1,570 

1,550 

1,560

1,560 

1,570 

1,590 

1,620 

1,620

1,620 

1,640 

1,660 

1,660 

1,640

1,590 

1,560 

1,570

Month

Oct 

Hoi 

Doc

C

Jar

Pel 

«ar 

Api

Jui 

Ju3 

Aug 

Sep

1

alendar year 194O................ ......

ater year 1940-4

Mar.

1,630 

1,630 

1,660 

1,640 

1,640

1,640 

1,620 

1,600 

1,630 

1,620

1,600 

1,570 

al,550 

al,540 

1,520

1,580 

1,630 

1,6SO 

1,760 

1,830

1,910 

2,030 

2,070 

2,040 

2,000

2,030 

2,140 

2,230 

2,360 

2,460 

2,570

Apr.

2,660 

2,790 

2,860 

2,790 

3,050

3,110 

2,S60 

2,770 

2,770 

2,840

2,840 

2,860 

2,960 

2,930 

2,930

3,070 

3,040 

2,840 

2,740 

2,670

2,670 

2,760 

2,960 

3,260 

3,590

3,730 

3,920 

4,310 

4,320 

5,200

Secondfoot-days

63,590 

60,900 

55,410

1,595,620

52,500 

44,650 

56,460 

94,750 

276, 4SO 

302,130 

232, 550 

20S,2SO 

152,180

I,654,SSO

May

5,500 

5,810 

6,480 

6,920 

6,920

6,480 

5,710 

5,630 

6,070 

6,480

7,180 

3,460 

10,200 

11,200 

10,400

9,040 

3,520 

9,620 

10,600 

9,390

S,640 

9,330 

11,200 

12,000 

11,700

11,SOO 

12,800 

12,600 

10,900 

9,740 

9,110

Maximum

2,510 

2,280 

1,900

12,900

1,930 

1,660 

2,570 

5,200 

12,300 

11,600 

10,900 

S,9SO 

7,660

12,800

June

3,800 

8,250 

S,040 

9,140 

10,700

10,900 

9,970 

9,740 

9,490 

9,680

S.980 

3,490 

8,920 

10,600 

11,500

11,300 

11,400 

11,600 

11,400 

10,300

10,100 

11,100 

11,400 

11,000 

10,200

9,420 

9,420 

10,200 

10,700 

9,390

July

S,430 

9,230 

3,610 

6,050 

6,730

9,040 

10,200 

10,300 

10,900 

10,300

10,600 

10,600 

10,200 

9,840 

9,310

9,520 

9,550 

10,100 

10,100 

10,200

9,910 

S.980 

S,490 

S,670 

3,770

9,010 

3,670 

8,220 

7,460 

6,420 

6,640

Minimum

2,010 

1,830 

1,570

1,560

1,520 

1,530 

1,520 

2,660 

5,500 

3,040 

6,050 

4,400 

2,9SO

1,520

Aug.

7,400 

S,9SO 

aS,9SO 

as, 800 

aS,700

as, 600 

a8,500 

as, 400 

as, 600 

S,550

3,400 

7,750 

5,710 

4,750 

4,470

4,400 

4,520 

4,960 

4,840 

4,790

4,370 

6,100 

7,090 

7,060 

7,010

6,7SO 

6,400 

5,340 

5,480 

5,580 

5,970

Mean

2,213 

2,030 

1,787

4,360

1,694 

1,595 

1,821 

3,153 

S,919 

10,070 

9,115 

6,719 

5,073

4,534

Sept.

5,840 

5,790 

6,100 

7,090 

7,660

7,320 

7,150 

6,780 

5,990 

5,530

5,500 

5,500 

5,280 

4,770 

4,790

4,840 

4,720 

4,610 

4,540 

4,630

5,030 

4,880 

4,660 

4,160 

3,550

3,130 

3,170 

3,130 

3,070 

2,980

Run-off In 

acre-feet

136,000 

120,800 

109,900

3,165,000

104,100 

88,560 

112,000 

137,900 

548,400 

599,300 

560,400 

413,100 

301,800

3,282,000

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of records for station near Eelse.

b Stage-discharge relation affected by Iced Doubtful gage-height record; discharge computed on basis of records for station near Eelse*
14 SHAKE RIVER MAIN STEM 

Snake River near Heise, Idaho

Location.- Water-stage recorder, lat. 43°37'. long. 111°40', in sec. 5, T. 3 N., R. 41 

E., 3 miles upstream from Heise and 23 miles upstream from Henrys Fork. Altitude 

of gage, 5,015 feet (revised , from river profile map).

Drainage area.- 5,740 square miles.

Records available.- September 1910 to September 1941, except for winters of 1914-24.

Average discharge.- 31 years, 6,710 second-feet (unadjusted).

Extremes.- Maximum discharge during year, 14,500 second-feet May 28 (gage height, 6.08 

feet); minimum, 1,630 second-feet Jan. 4 (gage height, 1.55 feet).

1910-41: Maximum discharge, 60,000 second-feet May 19, 1927, result of washing 

out of a landslide on Gros Ventre River (gage height, about 16.0 feet, present 

datum); minimum, 1,210 second-feet Jan. 22, 1935 (gage height, 1.15 feet).

Remarks.- Records excellent except those for periods of ice effect, which are good, 

station is above all Irrigation diversions from main river except Riley ditch 

(capacity, about 30 second-feet), which diverts 1 mile above station. About 105,000 

acres in Wyoming and Idaho Irrigated by diversions from tributaries above station. 

Flow partly regulated by Jackson Lake (see p. 11 ).

Discharge, In aeeond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

13 

13 

14 

15

16 

17 

18 

19 

30

21 

23 

23 

34 

25

26 

27 

28 

29 

30 

31

Oct.

2,940 

3,850 

3,810 

3,830 

3,780

2,670 

3,630 

2,600 

2,670 

2,670

3,590 

2,540 

2,510 

2,480 

2,450

2,450 

2,440 

2,420 

2,410 

2,390

2,360 

2,350 

2,350 

2,340 

2,340

2,340 

2,410 

2,710 

2,600 

2,570 

2,520

Nov.

2,540 

2,5YO 

2,5YO 

2,590 

2,510

2,460 

2,500 

2,520 

2,520 

2,510

2,450 

2,360 

2,240 

2,230 

2,360

2,220 

2,240 

2,270 

2,310 

*2,270

2,250 

2,280 

2,230 

2,230 

2,200

2,240 

2,160 

2,200 

2,270 

2,320

Dec.

2,270 

2,200 

2 220 

2*220 

2,220

2,200 

2,190 

2,160 

2,150 

2,100

1)2,010 

*b2,000 

bl,960 

bl,960 

bl,910

bl,960 

b2,100 

b2,230 

b2,160 

2,050

2,000 

1,970 

2,010 

2,050 

2,050

2,030 

2,030 

2,020 

1,950 

1,9YO 

*2,020

Jan.

bl,950 

1)1,850 

bl,7YO 

1,7YO 

2,030

2,190 

2,120 

2,060 

1,980 

2,070

2,050 

1,980 

1,920 

2,050 

2,290

2,220 

2,020 

1,960 

1,970 

1,970

1,960 

1,940 

9,960 

1,950 

1,940

1,960 

1,910 

1,840 

1,860 

1,850 

1,850

Feb.

1,790 

bl,800 

bl,820 

bl,890 

bl,S90

bl,900 

bl,900 

1,970 

2,010 

*2,020

2,010 

2,030 

1,960 

1,910 

1,880

1,890 

1,880 

1,850 

1,900 

1,920

1,910 

1,910 

1,970 

2,000 

2,010

1,960 

1,890 

1,890

Month

Oct 

NOT 

Dec

C

Jar 

Pel 

Mai 

Api 

Ma: 

Jur 

Ju] 

Au{ 

Sej

V

alendar year 19< 0..... .................

"11 . .

Ly......................................

Tater year 1940-4

Mar.

1,9YO 

2,060 

2,070 

2,030 

2,000

2,010 

2,000 

1,970 

1,970 

1,960

1,910 

1,850 

1,840 

1,840 

1,830

1,840 

S,OOO 

8,150 

2,280 

8,390

2,420 

2,460 

2,560 

2,520 

2,480

2,510 

2,600 

2,740 

2,900 

2,990 

3,010

Apr.

3,080 

3.2YO 

3,310 

3,230 

3,3YO

3,590 

3,370 

3,200 

3,160 

3,210

3,270 

3,830 

3,390 

3,450 

3,410

3,530 

3,590 

3,370 

3,180 

3,060

3,050 

3,080 

3,290 

3,650 

4,050

4,380 

4,630 

5,020 

5,610 

6,110

Secondfoot-days

79,060 

70,620 

64,370

1,781,360

61,240 

53,760 

69,160 

109,140 

308, 450 

320,890 

300,300 

229,430 

166, 320

1,832,740

May

6,520 

6,8SO 

7,450 

8,000 

8,OYO

Y,740 

7,010 

6,S20 

7,320 

Y,670

8,300 

9,400 

11,000 

12,100 

11,600

10,100 

9,600 

10,200 

11,700 

10,300

9,640 

9,930 

11,400 

13,100 

12,600

12,900 

13, 500 

14,000 

12,300 

11,000 

10,300

Maximum

2,940 

2,590 

2,270

13,300

2,290 

2,030 

3,010 

6,110 

14,000 

12,100 

11,200 

9,460 

8,100

14,000

June

9,850 

9,260 

8,7YO 

9,500 

11,000

11,800 

10,900 

10,500 

10,100 

10,300

9,S50 

9,120

a, 220

10,700 

12,100

12,100 

11,900 

12,100 

12,000 

11,200

10,600 

11,200 

12,100 

11,700 

11,000

9,890 

9,930 

10,300 

11,400 

10,500

July

9,260 

9,320 

10,200 

7,040 

6,YOO

8,980 

10,400 

11,200 

11,300 

11,300

11,000 

11,200 

10,800 

10,400 

10,400

10,200 

10,000 

10,500 

10,600 

10,800

10,400 

9,850 

9,120 

9,260 

9,290

9,680 

9,500 

S,840 

8,500 

7,100 

7,160

Minimum

2,340 

2,160 

1,910

1,810

1,770 

1,790 

1,830 

3,050 

6,520 

8,770 

6,7OO 

5,080 

3,390

1,770

Aug.

7,380 

9,120 

9,460 

9,290 

9,260

9,120 

8,940 

S,740 

9,290 

9,290

8,840 

9,150 

6,S50 

5,690 

5,180

5,100 

5,080 

5,610 

5,640 

5,500

5,550 

6,000 

7,930 

7,930 

7,870

7,770 

7,480 

7,040 

6,370 

6,260 

6,700

Mean

2,550 

2,354 

2,076

4,867

1,975 

1,920 

2,231 

3,638 

9,950 

10,700 

9,687 

7,401 

5,544

5,021

Sept.

6,580 

6,400 

6,580 

7,100 

8,100

7,930 

7.740 

Y,480 

6,880 

6,080

5,970 

5,920 

5,890 

5,260 

5,080

5,180 

5,080 

5,050 

4,900 

4,820

5,360 

5,210 

5,180 

4,780 

4,180

3,670 

3,530 

3,550 

3,450 

3,390

Run-off In 

acre-feet

156,800 

140,100 

127,700

3,533,000

121,500 

106.600 

137,200 

216,500 

611,800 

636, 500 

595,600 

455,100 

329,900

3,635,000

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice*
SNAKE RIVER MAIN STEM 15 

Diversions from Snake River between Helse and Shelley gaging stations, Idaho

Between Helse and Shelley gaging stations, 47 canals divert water from Snake River 

for Irrigation; of these 36 divert above mouth of Henrys Fork. Records available during 

each Irrigation season from 1919 to 1941. One of the canals Is equipped with a waterstage recorder, the others with staff gages, which are read once dally; records of discharge are combined to show total diverted flow.

Records good except those for my 1-17, which are fair.

Diversions* in second-feet, water year October 1940 to September 1941

Day

1

a

z

4 

5

6

8 

9 

10

11 

12 

13 

14ie

16 

17 

18 

19 

SO

81 

88 

83 

84 

25

86 

87 

86 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Oct 

Non 

Dec

C

Jar 

Pet 

Mar 

Apr 

Ma, 

Jur 

Jul 

Aug 

Ser

T

alendar year

he perio

Mar. Apr.

Secondfoot-days

143,970 

814,820 

239,820 

181,580 

161,820

-

May

1,090 

1,120 

1,880 

1,310 

1,190

1,310 

1,460 

1,830 

8,010 

8,540

8,570 

3,640 

4,800 

5,710 

6,040

6,370 

7,080 

7,030 

7,010 

7,050

7,350 

7,680 

7,870 

6,040 

7,630

6,760 

5,390 

5,140 

5,170 

5,890 

5,210

Maximum

6,040 

8,470 

8,530 

7,580 

6,230

-

June

5,060 

5,840 

5,820 

6,380 

6,580

6,780 

6,710 

5,570 

5,540 

5,660

5,580 

6,890 

6,820 

7,530 

7,710

7,800 

8,100 

6,340 

6,470 

8,480

8,160 

8,100 

8,190 

S,840 

8,830

S,080 

8,070 

8,080 

7,830 

7,500

July

7,430 

7,500 

7,850 

6,460 

6,480

6,750 

7,670 

8,070 

8,480 

8,530

8,580 

8,160 

8,380 

8,370 

8,360

8,880 

8,270 

8,300 

8,310 

8,800

6,080 

7,890 

7,780 

7,540 

7,630

7,030 

7,060 

7,060 

7,460 

7,880 

6,760

Minimum

1,090 

5,060 

6,460 

4,180 

3,600

-

Aug.

6,890 

6,830 

6,880 

7,390 

7,510

7,400 

7,580 

7,050 

6,590 

6,140

6,260 

5,300 

4,780 

4,440 

4,180

4,260 

4,250 

4,490 

4,910 

5,390

5,530 

5,390 

5,610 

5,790 

4,770

5,760 

5,690 

5,790 

5,800 

5,940 

5,950

Mean

4,644 

7,141 

7,717 

5,857 

5,394

-

Sept.

6,030 

5,890 

6,020 

6,120 

6,090

6,830 

5,980 

5,900 

5,910 

5,750

5,980 

6,040 

6,170 

5,980 

5,800

5,860 

5,780 

5,680 

5,650 

5,480

5,270 

5,130 

5,140 

4,570 

4,870

3,900 

3,740 

3>,660 

3,600 

3,600

Run-off In 

acre-feet

885,600 

424,900 

474,500 

360,800 

321,000

1,866,800
16 SNAKE RIVER MAIN STEM

Snake River near Shelley, Idaho

Location.- Water-stage recorder, lat. 4S°25', long. 112°08', in sec. 17, T. IN., R. 37 E., 

a quarter of a mile east of Woodvllle and 3 miles north of Shelley. Altitude of gage, 

4,596 feet (from river profile map).

Records available.- March 1915 to September 1941 (summer months only during some years).

Extremes.- Maximum discharge during year, 12,000 second-feet May 28 (gage height, 8.63 

jeet); minimum, 840 second-feet Jan. 5 (gage height, 3.90 feet).

1915-41: Maximum discharge, 47,200 second-feet June 17, 1918 (gage height, 16.97 

feet); minimum, 288 second-feet Nov. 5, 1934 (gage height, 2.22 feet).

Greatest discharge known, 70,000 second-feet (estimated) June 6, 1894, at former 

station at Eagle Rock (now Idaho Falls), 7 miles upstream from present site.

Remarks.- Records excellent except those for periods of Ice effect and no gage-height

record, which are fair. Flow partly regulated by Jackson Lake (see p. n ), Henrys Lake 

(see p. 49 ), Island Park Reservoir (see p. 41 ), and Grassy Lake (see p. 49 ). Many 

diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

2,710 

2,910 

2,940 

2,910 

2,910

2,S50 

2,730 

2,640 

2,560 

2,530

2,550 

8,510 

2,440 

2,420 

2,360

2,270 

2,240 

2,230 

.2,230 

2,160

2,130 

2,100 

2,130 

2,100 

2,030

2,020 

»2, 010 

a2,340 

a2,790 

8.2,790 

s.2,920

MOT.

912,660 

Z,?&0 

2,710 

2,700 

2,700

2,640 

2,530 

2,610 

2,700 

2,820

2,870 

«2,850 

2,730 

2,680 

2,850

2,850 

2,640 

2,590 

2,400 

2,510

2,340 

2,340 

8,510 

2,300 

2,200

2, 830 

2,300 

2,230 

8,260 

8,340

Dec.

2,390 

2,360 

2,290 

2,330 

2,240

2,240 

2,200 

2,150 

2,160 

2,100

*2,050 

1,820 

bl,530 

bl,450 

bl,410

bl.400 

bl,420 

bl,520 

1,580 

2,170

2,450 

2,630 

2,230 

2,200 

2,220

2,610 

2,320 

2,780 

2,940 

2,240 

2,320

Jan.

b2,200 

b2,050 

bl,620 

bl.SOO 

1,140

1,410 

2,800 

*2,300

b2,400 

b£,350

b2,200 

b2,100 

bl,950 

1,780 

1,700

1,790 

b2,040 

a£,180 

b£,150 

b2,180

b2.1BO 

b2,180 

8,190 

2,260 

2,830

2,860 

b2, 270 

b2,100 

bl,980 

bl,850 

bl,750

Feb.

bl,600 

bl,530 

bl,530 

bl,600 

bl,670

bl,740 

bl,800 

1,840 

2,010 

1,940

«B,290 

a2,500 

2,510 

b2,300 

b2,160

2,170 

b2,110 

b2,180 

2,130 

2,190

2,300 

8,350 

 2,450 

8, 440 

8,500

2,580 

2,510 

2,390

Month

Oct

No\ 

Dec

C

Jar 

Pet 

Mai 

Api 

Maj 

Jur 

Ju] 

Aus 

Sej

1

alendar year

Fater year 1940-

Mar.

2,360 

2,530 

2,S20 

3,020 

2,870

2,710 

2,560 

2,480 

2,500 

2,400

2,400 

2,270 

2,190 

2,100 

2,130

2,080 

2,100 

2,200 

2,50O 

2,940

3,170 

3,210 

3,110 

3,170 

3,170

3,070 

3,150 

3,230 

3,480 

3,590 

3,850

Apr.

4,020 

4,040 

3,970 

3,970 

4,000

4,020 

4,220 

3,920 

3,620 

3,500

3,550 

3,570 

3,550 

3,620 

3,680

3,660 

3,800 

3,920 

3,620 

3,330

3,190 3, no

3,090 

3,190 

3,500

3,760 

4,190 

4,630 

5,180 

5,950

Secondfoot-days

76,460 

77,050 

65,750

.

62,300 

59,240 

85,360 

115, 390 

213,890 

173,840 

114,980 

105,870 

74,170

1,224,300

May

6,500 

6,930 

7,360 

7,900 

8,520

8,560 

7,970 

7,030 

6,670 

7,030

7,OOO 

6,960 

6,900 

7,430 

7,970

7,460. 

5,670 

4,260 

4,690 

5,700

4,320 

3,070 

8,750 

4,020 

5,610

6,540

8,210 

10,400 

11,500 

10,200 

8,760

Maximum

2,940 

2,870 

2,940

-

2,400 

2,580 

3,850 

5,950 

11,500 

8,350 

5,150 

6,050 

3,590

11,500

June

S.070 

7,500 

6,500 

5,060 

5,030

6,270 

7,390 

7,S70 

8,350 

8,140

S,240 

7,000 

5,300 

4,320 

4,950

5,990 

5,760 

5,450 

5,390 

5,390

4,890 

4,370 

4,800 

5,210 

4,890

4,260 

3,620 

3,680 

4,450 

5,700

July

5,150 

4,190 

4,820 

4,390 

2,700

2,230 

3,500 

4,090 

4,260 

4,060

3,970 

3,940 

3,990 

3,750 

3,440

3,250 

3,060 

3,070 

3,440 

3,800

4,260 

4,260 

3,970 

3,530 

3,500

3,640 

4,260 

4,820 

3,620 

2,920 

2,300

Minimum

2,010 

2,200 

1,400

-

1,140 

1,530 

2,080 

3,090 

2,750 

3,620 

2,230 

2,080 

1,730

1,140

Aug.

2,080 

2,150 

3,350 

3,440 

3,230

3,250 

3,190 

2,980 

3,070 

4,420

4,950 

5,480 

6,050 

4,450 

3,940

3,530 

3,190 

2,920 

2,890 

2,870

8,440

2,270 

2,480 

3,550 

3,710

3,650 

3,800 

3,710 

3,270 

2,750 

2,610

Mean

2,466

8,568 

2,121

-

2,010 

2,116 

2,764 

3,846 

6,900 

5,795 

3,709 

3,415 

2,472

3,354

Sept.

2,680 

2,560 

2,360 

2,400 

2,780

3,590 

3,570 

3,570 

3,440 

3,170

2,630 

8,360 

2,170 

2,030 

1,690

1,730 

1,840 

1,860 

1,760 

1,810

1,900 

8,230 

8,400 

8,640 

8,750

2,640 

8,470 

8,300 

E,380 

8,870

Run-off in 

acre-feet

151,700 

152,800 

130,400

-

123,600 

117,500 

169,300 

228,900 

424,800 

344,800 

228,100 

210,000 

147,100

8,428,000

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of records for station at dough ranch.

b Stage-discharge relation affected by ice*
SNAKE RIVER MAIN STEM 17 

Diversions from Snake River between Shelley and Clough Ranch gaging station, Idaho

Between Shelley and Clough Ranch, 13 canals divert water from Snake River for irrigation. Records available during each Irrigation season from 1919 to 1941. The two largest 

canals are equipped with recorders, the others with staff gages, which are read once 

daily. Records of discharge are combined to show total diverted flow.

Records good except those for May 1-17, which are fair.

Diversions, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

4f

HOT, Dec. Jan. Feb.

Month

Dot 

NOT 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Ju3 

Aug 

Sep

1

alendar year

'he perio

Mar. Apr.

Secondfoot-days

79,670 

97,280 

87,700 

66,390 

57,220

-

May

778 

852 

1,020 

1,040 

1,300

1,340 

1,540 

1,800 

1,790 

2,240

2,590 

2,940 

3,330 

3,510 

3,700

3,680 

3,630 

3,350 

3,340 

3,510

3,420 

3,210 

2,660 

2,910 

3,480

3,120 

2,610 

3,040 

2,390 

2,600 

2,450

Maximum

3,700 

3,700 

3,500 

3,860 

2,470

-

June

2,210 

2,250 

2,440 

2,680 

3,020

3,320 

3,270 

2,960 

2,960 

2,910

3,060 

3,360 

3,500 

3,520 

3,600

3,700 

3,510 

3,560 

3,510 

3,500

3,420 

3,350 

3,460 

3,500 

3,510

3,450 

3,410 

3,440 

3,480 

3,420

July

3,400 

3,430 

3,290 

2,250 

2,120

2,000 

2,930 

3,320 

3,500 

3,440

3,200 

3,180 

3,400 

3.320 

3,110

2,780' 

2,300 

2,800 

2,920 

2,880

2,830 

2,750 

2,870 

2,320 

2,320

2,280 

2,280 

2,760 

2,740 

2,700 

1,690

Minimum

778 

2,210 

1,690 

1,500 

1,410

-

Aug.

1,510 

1,540 

1,730 

2,420 

£,460

2,060 

2,140 

2,180 

2,100 

2,390

2,170 

1,500 

1,650 

1,710 

1,640

1,620 

1,610 

1,660 

1,790 

2,110

2,410 

2,160 

2,270 

2,790 

2,350

2,820 

2,860 

2,840 

2,820 

2,300 

2,280

Mean

2,570 

3,243 

2,829 

2,142 

1,907

-

Sept.

2,330 

2,470 

2.330 

2,340 

2,350

2,470 

2,380 

2,250 

2,250 

2,300

2,350 

2,040 

2,090 

1,930 

1,510

1,460 

1,470 

1,410 

1,480 

1,640

1,630 

1,820 

1,840 

1,820 

1,690

1,540 

1,520 

1,520 

1,480 

1,410

Run- off in 

acre-feet

158,000 

193,000 

174,000 

131.700 

113,500

770,200
18 SNAKE RIVER MAIN STEM

Snake River at Clough Ranch, near Blackfoot, Idaho

Location.- Water-stage recorder, lat. 43°07', long. 112°31', In SE£ sec. 30, T. 3 S., R. 

is* E., a quarter of a mile downstream from Blackfoot River and 14 miles southwest of 

Blackfoot. Altitude of gage, 4,401 feet (from river profile map).

Records available.- June 1910 to September 1941.

Extremes.- Maximum discharge during year, 8,420 second-feet May 29 (gage height, 6.29 

reet); minimum, 162 second-feet July 19 (gage height, 0.60 foot); minimum gage 

height, 0.55 foot May 24, 25.

1910-41: Maximum discharge, 46,200 second-feet June 18, 1918 (gage height, 14.80 

feet); minimum, 111 second-feet Nov. 10, 1934 (gage height, 0.80 foot). Late In summer of 1905 there was no flow In Snake River for a distance of 10 miles In vicinity of 

Blackfoot. On Aug. 9, 1905, discharge of Snake River Just below mouth of Blackfoot 

River was 39 second-feet, supplied by ground-water Inflow a short distance above 

station.

Remarks.- Records excellent. Flow partly regulated by Jackson Lake (see p. 11 ), Henrys 

CaTce (see p. 49 ), Island Park Reservoir (see p. 41 ), Grassy Lake (see p. 49 ), and 

Blackfoot-Marsh Reservoir, having a combined capacity of 1,483,000 acre-feet^ Many 

diversions above station for Irrigation. ^

Discharge, in second-feet, water year October 1940 to September 1941

Bay

1 

2 

S 

4 

5

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

SI

Oct.

2,090 

2,360 

2,580 

2,500 

2,520

2,480 

2,430 

2,340 

2,260 

2,150

2,120 

2,080 

1,950 

1,930 

1,S50

1,790 

1,750 

1,650 

1,530 

1,520

1,460 

1,440 

1,480 

1,500 

1,480

1,560 

1,570 

1,570 

1,930 

2.400 

2,430

Nov.

2,580 

2,540 

2,440 

2,430 

2,370

2,340 

2,320 

2.260 

2,370 

2,540

2,640 

S, 800 

2,730 

2,760 

2,680

S, 840 

2,720 

a2,6SO 

a2,640 

a2,600

8. 560 

2,430 

2,360 

8,330 

2.290

2,320 

a, 460 

2,440 

a, 460 

2,500

Dec.

2,540 

2,550 

2,520 

2,520 

2,520

2,440 

2,420 

2,390 

2,390 

2,270

2,180 

1,670 

1,330 

1,330 

1,250

1,230 

1,390 

1,540 

1,710 

1,900

2.400 

2,420 

2,500 

2,550 

2,540

2,520 

2,630 

2.500 

2,440 

2. ,580 

2,370

Jan.

2,220

a, 220

1,720 

1,310 

1,250

1,210 

1,440

a, 110 

a. 160 

a, 160

a, 050

1,920 

1,690 

1,590 

1,730

1,790 

1,840 

2,040 

1,940 

1.980

5,150 

2,160 

2,190 

2,190 

2,250

2,290 

2,290 

2,320 

2,150 

1,990 

1,860

Feb.

1,670 

1,480 

1,380 

1,380 

1,500

1,580 

1,650 

1,770 

1,940 

2,020

2,090 

2,430 

2,430 

2,500 

2,220

2,290 

2,130 

2,160 

2.160 

2,220

2,330 

2,500 

2,640 

2,740 

2,720

2,780 

2,620 

2,480

Month

Oct 

Not

Dec

C

Jar 

Pel 

Mai 

Apt 

Ma, 

Jur 

Ju3

AU£

Sej 

VI

alendar year 1940 ......................

11. ....................................

Fater year 1940-4

Mar.

2,370 

2,600 

2,790 

a, 950 

3, 840

a. 700

a, 460 

a, 330 

2,300 

2,250

2,220 

2.150 

2,060 

1,950 

1,940

1,940 

1,920 

1,900 

2,150 

a2,450

2.870 

2,910 

2,840 

2,870 

2.900

2,340 

2,820 

2,870 

3,060 

3,200 

3.480

Apr.

3,660 

3,730 

3,760 

3,740 

3,830

3,S10 

3,930 

3.S70 

3,520 

3.320

3,280 

3,340 

3,250 

3.340 

3,400

3,400 

3,490 

3,610 

3,520 

'3,190

2,980 

2,850 

2.720 

2,670 

2,520

2,340 

3,110 

3.440 

3,800 

4,310

Secondfoot-days

60,700 

75,430 

67,590

835.201

60,210 

59 , 860 

78,930 

102,280 

128,560 

80,842 

23,395 

40,720 

21,991

300, 503

May

4,900 

5,310 

5,650 

6,320 

6,860

7,100 

6.620 

5.720 

4.780 

4,700

4,440 

4,140 

3,640 

3,490 

3,940

3,960 

2,960 

1,450 

1,120 

1,940

1,660 

640 

220 

170 

1,010

2,330 

4,200 

5,970 

7,960 

8,160 

7,200

Maximum

2,580 

2,840 

2,680

6,510

2,320 

2,780 

3,480 

4,310 

8,160 

6,480 

1,990 

4,400 

1,430

8,160

June

6,480 

6,020 

5,050 

3,390 

2,240

2,490 

3,640 

4,880 

5,330 

5,420

5,630 

4,600 

2,610 

1,290 

S80

1,700 

2,160 

1,890 

1,830 

1,880

1,780 

1,380 

1,100 

1,530 

1,490

1,110 

594 

328 

410 

1,710

July

1,990 

' 1,300 

731 

1,520 

1,260

37 S 

178 

208 

445 

474

568 

5S2 

516 

405 

273

198 

220 

168 

162 

270

843 

1,220 

1,140 

1,090 

1,070

1,160 

1,430 

1,530 

1,100 

647 

314

Minimum

1,440 

2,260 

1,230

150

1,210 

1,380 

1,900 

2,520 

170 

328 

162 

202 

ISO

162

Aug.

556 

425 

745 

1,070 

787

934 

984 

 310 

801 

1,200

2,330 

3.680 

4,400 

3,450 

2,680

2,540 

2,100 

1,630 

1,340 

1,050

668 

282 

202 

306 

801

925 

976 

950 

801 

661 

486

Mean

1,953 

2,514 

2,180

2,282

1,942 

2,138 

2,546 

3,409 

4,147 

2,695 

755 

1,314 

733

2,193

Sept.

425 

298 

198 

185 

180

4S6 

1,150 

1,220 

1,320 

1,220

780 

510 

450 

355 

310

568 

492 

530 

538 

456

410 

516 

689 

925 

1,290

1,430 

1,360 

1,270 

1,210 

1,170

Run- off in 

acre-feet

180,400 

149,600 

134,100

1,657,000

119,400 

116,700 

156,600 

202,900 

255 . 000 

160,300 

46,400 

80,770 

43,620

1,588,000

a Ho gage-height record; discharge computed on basis of records for station near Shelley.
SNAKE RIVER MAIN STEM 19

American Falls Reservoir at'American Falls, Idaho

Location.- Water-stage recorder, lat. 42°46', long. 112°53', in sec. 30, T. 7 S., R. 31 

E., at outlet gates of reservoir on Snake River at American Falls. Datum of gage is 

mean sea level (levels by Bureau of Reclamation).

Records available.- March 1926 to September 1941.

Extremes.- Maximum contents during year, 1,701,120 acre-feet Apr. 21 (elevation, 4,354.52 

reet); minimum, 271,950 acre-feet Oct. 1 (elevation, 4,317.00 feet).

1926-41: Maximum contents, 1,726,580 acre-feet June 10, 1938 (elevation, 4,354.97 

feet); minimum, 3,240 acre-feet Aug. 30, 1926 (elevation, 4,296.82 feet).

Remarks.- Reservoir is formed by concrete gravity dam with earth dikes at each end; par- 

'ETaT storage began in 1926, full storage in 1927. Capacity, 1,700,000 acre-feet between elevations 4,295.66 feet (bottom of outlet gate) and 4,354.50 feet (top of spillway radial gates). Small amount of dead storage. Water is used for irrigation under 

canals diverting fpom Snake River at Mlnidoka and Milner Dams. Contente as here given 

are computed from mean daily elevations; all available for release.

Cooperation.- Reservoir elevations and capacity table furnished by Bureau of Reclamation.

Contents, In acre-feet, water year October 1940 to September 1941

Day

1

2

5

4

5

6

7

B

9

10

11

12

13

14

15

16

17

IB

19

SO

SI

SS

23

24

25

26

27

SB

29

30

31

Oct.

871,950

280,630

285,970

296,970

303 , 320

314,380

384,070

332, 850

340,210

349,280

358,790

384,120

389,340

376,850

383.350

390,110

396,510

402,920

40S, 820

414,810

419,420

424,670

429,670

. 434,920

439,390

445,510

449,550

453,660

460,660

466 , 520

473,080

Nov.

483,320

491,690

502,000

510,540

519,370

525,940

530,630

536,500

540,310

545 . 300

553,610

561,960

569,830

577,100

584,060

591,220

598, 720

606,540

615,290

624,610

632,660

642,010

652,100

660,400

666,370

677,330

665,070

692,920

701,120

706,930

-

Dec.

715,130

723,890

731,610

740,740

746, 110

755,600

765.330

772,190

776,320

785,690

796,610

806,610

806.610

611,060

614,760

618,470

325,660

629,750

836,230

842,700

650,710

859,850

667,240

875.670

684,690

894,300

901,760

913.090

980,770

939,260

936,140

Jan.

945,560

952,650

959,330

963,920

963,920

974,350

979,770

935,250

992,110

998.980

1,005,480

1,011,430

1,017,870

1.023,870

1,029,970

1,037,010

1,044,060

1,050,280

1,056,680

1,062,990

1,070,470

1,078,140

1,066,700

1,094,680

1,103,840

1,111,950

1.120,170

1,123,400

1,121,550

1,119,250

1,116,080

P«b.

1,114,210

1,113,310

1,119,250

1,123,860

1,126,010

1,129,850

1,132,160

1,133,060

1,139,530

1,147,370

1,156,590

1,166,370

1,177,670

1,167,090

1.196,040

1,204,510

1,212,590

1,220,260

1,227,450

1,235,610

1,243,280

1,251,910

1,261,530

1,271,610

1,261,550

1,291,290

1,301,030

1,309,660

-

-

-

Mar.

1,316,770

1,327,190

1,335,110

1,345,010

1,354,410

1,362,980

1,372,060

1,379,120

1,387,190

1,394,250

1,403,320

-1,409,970

1,416,140

1,419,740

1,423,340

1,427,960

1,432,590

1,434,650

1,441,330

1,446,020

1,456,250

1,462,520

1,470,370

1,462,420

1,490,270

1,500,220

1,510,180

1,519,240

1,526,290

1,538,400

1,548,520
20 SNAKE RIVER M/LIN STEM

In acre-feet, of American Falls Reservoir at American Falls, Idaho, 

mater year October 1940 to September 1941 Continued

Day

1

2

3

4

5

6

7

8

9

10

11

IS

13

14

15

16

17

18

19

SO

21

22

23

24

25

26

27

28

29

30

31

Apr.

1,557,570

1,566,710

1,573,230

1,582,470

1,586,370

1,596,050

1,605,830

1,613,980

1,622,220

1,626,090

1,634,940

1,641,570

1,649,310

1,658,160

1,661,470

1,668,660

1,678,700

1,688,790

1,693,270

1,699,440

1,701,120

1,700,560

1,699,440

1,697,200

1,695,520

1,694,400

1,693,830

1,693,830

1,693,830

1,690,470

-

May

1,686,550

1,683,750

1,681,500

1,678,140

1,678,140

1,678,140

1,681,500

1,679,260

1.679.260

1,675,900

1,670,870

1,665,340

1,655.940

1,647,100

1,641,020

1,624,940

1,623,330

1,613,440

1,605,830

1,590,070

1,579,750

1,569.970

1,558,100

1,645,860

1,530,950

1,522,960

1,516,040

1,513,380

1,512,310

1,510,720

1.507.550

June

1,503,880

, 1,500,220

1,496,030

1,491,840

1,484,510

1.475,610

1,467,230

1,466,710

1.467,230

1,470.900

1,472,990

1,474,040

1,471,420

1,464,610

1,456,250

1,447,500

1,438,760

1,432,590

1,423,340

1,414,600

1,407,400

1,397,270

1,387,190

1,373,570

1,365,500

1,353,920

1,340,550

1,324,220

1,309,370

1,296,160

-

July

1,285,930

1,274,730

1,261,580

1,249,040

1,237,050

1,225,060

1,208,280

1,190,860

1,172,490

1.157,970

1,140,450

1,123,860

1,106,540

1,091,210

1,074,530

1,057,700

1,040,100

1,022,160

1,004,990

988,680

971,430

955,150

940,180

924,010

910,660

895,870

882,140

868,420

857,190

845,370

829,750

Aug.

814,020

799,940

783,720

769,660

755,240

740,390

725,640

710,690

697,360

683,360

672,350

661,730

655,750

651,110

644,260

637,820

629,760

620,100

609,040

596,220

581,340

566,500

550,290

535,030

519, 650

508,260

493,000

479,720

465,440

451,970

440.180

Sept.

426,250

412,410

397,540

386,110

377, 850

368,340

360,460

352,640

344,580

338,780

333,090

329,530

325,260

321,700

318,380

317,660

315,580

315,120

313,510

313,740

312,360

309,380

306,860

305,700

306,850

307,080

308,230

311,900

315,350

319,800

-

Monthly elevation and contents, water year October 1940 to September 1941

Date

Dec. 31....................

Water year 1940-41

Elevation 

(feet)

4,338.86

4,319.11

-

Contents 

(acre-feet)

936,140

319,800

-

Change In contents 

during month 

(acre-feet)

+208 700

+229,210

 *"*79 720 *

-120,380

+55,420
SNAKE RIVER MAIN STEM 21

Snake River at Neeley, Idaho

Location.- Water-stage recorder, lat. 42°45', long. 112°54 t , In sec. 31, T. 7 S.,R. 3LE., 

nair a mile downstream from American Falls Dam. Datum of gage Is 4,242.8 feet above 

mean sea level (river profile survey). Records computed to show flow at former Bite to 

sec. 11, T. 8 S., R. 30 E,, half a mile north of Neeley and 3 miles downstream from 

present site, by adding Inflow between sites.

Records available.- March 1906 to September 1941.

Extremes.- Maximum discharge during year, 12,600 second-feet May 30 (gage height, 5.95 

reet); minimum, 111 second-feet Dec. 8-10 (gage height, 0.50 foot). -

1906-41: Maximum dally discharge, 48,400 second-feet June 20, 1918 (gage height, 

13.5 feet at site and datum then In use); minimum, that of Dec. 8-10, 1940.

Remarks.- Records excellent. Flow regulated by American Falls Reservoir (see p. 19 ) and 

oEEer reservoirs, having a combined usable capacity of 3,200,000 acre-feet. About 

700,000 acres of land Irrigated by water diverted from river and tributaries above 

station.

Cooperation.- Qage-helght record furnished by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

IS 

19 

20

21 

22 

ZZ 

24 

25

26 

27 

28 

29 

30 

31

Oct.

1,280 

1,240 

1,240 

380 

1,320

623 

877 

751 

777 

860

1,470 

1,420 

1,600 

1,420 

1,280

1,260 

1,360 

1,290 

1,290 

1,420

1,480 

1,390 

1,780 

1,790 

1,800

1,820 

1,880 

1,930 

1,650 

1,780 

1,230

Nov.

585 

632 

640 

748

711

2,240 

2,340 

2,050 

2,110 

1,950

1,920 

1,920 

1,760 

1,830 

1,830

1,220 

1,330 

1,240 

1,280

7S4

715 

743 

S32 

782 

739

979 

994 

988 

939 

979

Dec.

982 

1,040 

1,040 

1,030 

1,040

1,090 

1,100 

1,170 

1,190 

1,170

1,170 

1,160 

1,440 

1,470 

1,440

1,440 

1,360 

1,140 

920 

752

779 

793 

864 

794 

794

996 

1,010 

1,140 

1,210 

1,160 

1,170

Jan.

1,120 

1,160 

1,220 

1,320 

1,320

1,330 

l',260 

1,240 

1,310 

1,260

1,270 

1,260 

1,250 

1,280 

1,170

1,150 

994 

1,160 

1,100 

1,080

1,110 

1,090 

667 

654 

705

701 

1,740 

4,900 

6,020 

6,020 

6,020

Feb.

6,020

s.eeo

1,680 

1,650 

2,200

2,980 

3,660 

3,040 

780 

S02

844 

781 

883 

865 

882

849 

S67 

1,050 

1,080 

1,020

1,060 

1,140 

1,180 

1,200 

1,020

850 

907 

907

Month

Oct 

Hoi 

Dec

C

Jar 

Pel 

Mar 

AP1 

Ma3 

JUT 

Jul 

Aus 

Sei

1

alendar year 19410 ......................

ater year 1940-4.

Mar.

907 

961 

1,150 

1,100 

1,170

1,150 

1,140 

1,170 

1,150 

1,160

1,090 

936 

2,160 

2,270 

2,290

2,290 

2,260 

2,210 

2,270 

2,240

2,220 

2,270 

930

678 

637

671 

676 

678 

677 

1,190 

1,220

Apr.

2,300 

2,260 

2,280 

3,140 

2,740

2,860 

2,650 

2,170 

2,190 

2,200

2,210 

2,620 

2,490 

2,480 

2,900

2,910 

2,780 

1,730 

2,550 

2,670

5,710 

6,060 

5,850 

6,770 

6,330

5,910 

5,740 

6,330 

7,700 

9,060

Secondfoot-days

41,6SS 

37,810 

53,854

1,767,792

53,861 

42,437 

42,901 

114,970 

810,170 

267,220 

539,600 

322,710 

159,440

1,766,661

May

9,360 

9,250 

9,860 

9,860 

9,540

9,320 

9,320 

9,720 

9,670 

9,720

9,800 

10,100 

10,600 

10,600 

10,500

10,5OO 

10,600 

10,400 

10,300 

10,200

9,890 

9,.540 

9,410 

9,360 

9,360

9,360 

9,670 

10,100 

10,600 

11,700 

12,200

Maximum

1,950 

2,340 

1,470

12,100

6,020 

6,020 

2,290 

9,060 

12,200 

12,000 

11,700 

11,500 

9,890

12,200

June

12,000 

10,700 

9,760 

9,670 

9,450

9,320 

8,220 

7,040 

6,860 

6,930

7,080 

7,450 

7,910 

S.130 

8,090

8,090 

8,260 

8,620 

S,790 

8,790

8,750 

8,840 

9,010 

9,140 

9,230

9,800 10 ; 300

10,400 

10,400 

10,200

July

10,100 

10,200 

10,200 

10,200 

10,300

10,600 

10,900 

11,100 

11,200 

11,500

11,700 

11,600 

11,100 

11,000 

11,100

11,200 

11,100 

11,200 

11,500 

11,500

11,500 

11,300 

11,200 

11,400 

11,500

11,200 

11,000 

10,500 

10,500 

10,500 

10,500

Minimum

380

585 

752

154

654 

780 

637 

1,730 

9,250 

6,850 

10,100 

9,140 

1,610

380,

Aug.

10,700 

10,800 

10,800 

10,800 

10,800

11,000 

10,900 

10,900 

10,600 

10,500

10,500 

10,200 

9,890 

9,320 

9,140

9,140 

9,140 

9,500 

10,600 

11,300

11,000 

10,600 

10,600 

10,600 

10,600

10,600 

10,500 

10,700 

10,800 

10,400 

9,980

Mean

1,345 

1,260 

1,092

4,830

1,737 

1,516 

1,384 

3,832 

10,010 

S,907 

10,950 

10,410 

5,315

4,840

Sept.

9,890 

9,760 

9,500 

8,550 

7,780

7,520 

7,080 

7,160 

7,160 

6,920

6,020 

5,570 

5,240 

3,360 

4,650

4,470 

3,730 

3,420 

3,890 

4,400

4,000 

4,860 

4,510 

4,160 

3,420

3,500 

3,290 

1,990 

1,780 

1,610

Run-off In 

acre-feet

82,690 

75,000 

67,150

3,506,000

106,800 

84,170 

S5,090 

228,000 

615,200 

550,000 

673,600 

640,100 

816,200

3,504,000
22 SNAKE RIVER MAIN STEM 

Lake Waloott near Minldoka, Idaho

Location.- Staff gage, lat. 42°40', long. 113°29', In sec. I, T. 93., R. 25 E., in power 

Kouse at Minldoka Dam on Snake River, 6 miles southeast of Mlnldoka. Prior to Feb. 1, 

1941, hook gage on face of dam at same datum. Datum of gage Is 4,200.00 feet above 

datum of Bureau of Reclamation, which Is 49.52 feet below mean sea level.

Records _ayallable.- April 1909 to September 1917 (gage heights only), October 1917 to 

September l~94l.

Extremes.- Maximum contents during year, 98,200 acre-feet April 22 (gage height, 45.25 

reetj; minimum, -4,520 acre-feet Dec. 26 (gage height, 35.50 feet).

1909-41: Maximum contents, 110,740 acre-feet Aug. 8, 1922 (gage height, 46.28 feet); 

minimum, -9,040 acre-feet Nov. 1, 1913 (gage height, 35.00 feet).

Remarks.- Reservoir is formed by rook-fill dam with concrete core; storage began in 1909. 

capacity, 107,240 acre-feet between gage height 36.00 feet (sill of power-house penstock) and 46.00 feet (top of flashboards). Considerable amount of dead storage. Gage 

read twice daily at 8 a.m. and 4:30 p.m. Contents as given herein are computed from 

mean gage heights. Water is used for power development and irrigation on the Mlnidoka 

project of Bureau of Reclamation.

Cooperation.- Gage-height record and capacity table furnished by Bureau of Reclamation.

Contents, In acre-feet, water year October 1940 to September 1941

D«J

1

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

-V20

-1,440

-2,160

-1,620

-2,440

-900

-1,030

-810

-1,440

-1,350

-1,170

0

-630

380

570

4SO

570

570

570

670

570

570

3SO

290

-S10

-SO

-720

-540

0

-180

330

HOT.

570

190

0

-720

-260

-540

-360

-260

-720

-1,440

-1,440

570

1,330

2,000

2,000

2,290

1,810

950

760

950

-360

-810

-1,170

-1,720

-2,710

-3,160

-3,260

-3,160

-3,070

-2,890

-

Dec.

-2,890

-2,620

-2,350

-2,260

-2,160

-2,260

-1,800

-1,620

-1 ,350

-1,260

-S10

-540

-810

-360

-SO

0

380

3SO

290

-360

-900

-1,620

-2,350

-2,710

-3,260

-3,800

-3,800

-4,060

-3,620

-3 ,440

-3,880

Jan.

-3 ,440

-3,440

-3 ,440

-3,440

-3,070

-2,620

-2,160

-1,720

-1 ,440

-1,170

-720

-540

100

190

570

670

670

570

S60

670

570

760

570

-260

-1,170

-1,300

-2,350

1,53«

11,020

20,960

30,630

Feb.

39,860

48,100

47,140

47,670

43,310

51,280

53,750

60,200

60,100

59,560

59,990

60,310

60,850

60,100

59,560

53,430

58,050

67 ,190

56,980

56,870

56,760

56 ,660

56,760

56 ,760

56,980

57 ,410

57,300

57,190

w

_

-

Mar.

56,980

56,760

56,870

57,410

57,410

57,840

58,270

5S,4SO

59,130

59,450

60,420

60,740

61 ,060

63 ,700

66,990

70,070

73,280

75,760

73,800

31,510

S5 ,050

37,960

90,410

91,230

91,230

91,690

91 ,310

91,230

90,290

90,410

90,99O

Apr.

91,460

93,790

94,490

96,390

94,140

95,670

96 ,510

96,390

96 ,030

95,550

95,180

95 ,070

96,150

96,270

95, ISO

95 ,310

97,350

97,230

96,390

95,910

97,350

93,200

97,720

96,990

98,080

97,340

95,910

95,430

96,030

97 ,350

-

*"T

96 ,870

96 ,S70

96 ,390

95,180

96 ,390

95,130

96,390

96 ,030

96 ,630

96,390

96,150

95,550

94,140

94 ,020

94,250

94,250

94,140

91,920

91,920

91,690

91,230

90,410

36,660

86,800

65,520

33,310

81 ,740

31,280

31,620

31 ,850

36,570

June

90,760

94,950

94,720

95,430

94,950

95,430

95,070

94,720

93,790

94,250

94,720

94,950

93,560

94,020

92,860

91 ,310

S9,S30

8S, 660

87,270

36,330

85,870

35,400

84,470

81,960

81,400

60,160

79,030

77,900

77,680

77,900

-

July

78,130

78,580

78,350

78,020

77,900

73,020

76,020

73,020

77,560

77,680

77,900

78,350

73,470

78,470

78,020

77 ,790

77,450

76,660

77,560

77,630

77,460

77,680

77,680

77,450

77,680

78,020

78,360

78,020

77,230

77,230

76,660

Aug.

77,000

77,450

73,020

77,450

77,450

78,920

79,260

79,370

79,710

79,480

79,030

73,690

79,260

79,030

7S ,800

78,130

77,630

76 ,770

76 ,550

78,350

79,260

76,920

77,340

77,000

76,550

77,110

76,100

76,770

77,000

77 ,450

78,020

sept.

77,680

77,000

76,210

76,550

75,650

72,940

71,610

69,630

67,870

66,770

63,310

60,200

56,120

51,820

46,090

43,660

40,170

36,430

32,290

29,8OO

27,560

24,920

24,720

25,630

25,120

23,700

23,090

23,090

20,860

13,860

-

Kote.- Negative figures indicated storage necessary to fill reservoir to aill of powerhouse 

penstock.

Monthly gage height and contents, water year October 1940 to September 1941

Date

Sept. 30. ...................

Dec. 31,.... ...............

Dalendar year 1940

Sept. 30. . ..................

Water year 194O-41

Gage height 

(feet)

35.90 

36.04 

35.68 

35.57

-

39.10 

41.07 

44.64 

45.18 

44.26 

43.50 

43.39 

43.51 

37.94

-

Contents 

(acre-feet)

-900 

380 

-2,890 

-3 ,880

-

30,630 

57,190 

90,990 

97,350 

36,570 

77,900 

76,660 

78 ,020 

18,850

-

Change In contents 

during month 

(acre-feet)

+1,280 

-3,270 

-990

-69,990

+34,510 

+26,560 

+33 ,800 

+6,360 

-10,780 

-8,670 

-1,240 

+1,360 

-59,170

+19,760

Note.- negative figures of contents indicate storage necessary to fill 

reservoir to sill of powerhouse penstock.
SNAKE RIVER MAIN STEM 23

Snake River near Minidoka, Idaho

Location.- Water-stage recorder, lat. 42°40', long. 113°30', in sec. 2, T. 9 S., R. 25 E., 

TTnTTe downstream from Minidoka Dam and 6 miles southeast of Minidoka. Datum of gage 

is 4,132.2 feet above mean sea level (river profile survey).

Records available.- April 1910 to September 1941. August 1895 to December 1899 and May 

1901 to December 1910 at site at Montgomery Ferry, 6 miles downstream.

Extremes.- Maximum discharge during year, 8,500 second-feet July 15, 20 (maximum gage 

height, 8.55 feet July 20); minimum, 545 second-feet Oct. 7 (gage height, 3.08 feet). 

1910-41: Maximum discharge, 45,900 second-feet June 21, 1918 (gage height, 16.02 

feet); minimum, 59 second-feet Nov. 18, 1936 (gage height, 1.56 feet).

Remarks.- Records good. Flow regulated by American Falls Reservoir (see p. 19 ), Lake 

WaTcott (see p. 22 ), and other reservoirs, having a combined usable capacity of about 

3,300,000 acre-feet, and greatly reduced by diversions above station for irrigation on 

Minidoka project.

Cooperation.- Gage-height record furnished by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

IS 

15 

14 

IS

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

30 

51

Oct.

1,390 

1,500 

1,220 

677 

574

556 

54S 

5S6 

562 

556

562 

1,080 

1,140 

1,120 

1,050

958 

958 

958 

946 

978

1,050 

1,150 

1,220 

1,300 

1,440

1,480 

1,500 

1,510 

1,510 

1,590 

1,030

HOT.

842 

842 

834 

S74 

914

1,410 

2,140 

2,060 

1,990 

2,050

2,030 

1,980 

1,870 

1,870 

1,920

1,600 

1,540 

1,680 

1,690 

1,540

1,540 

1,500 

1,290 

1,290 

1,290

1,270 

1,240 

1,200 

1,200 

1,200

Dec.

1,200 

1,200 

1,210 

1,220 

1,250

1,270 

1,270 

1,260 

1,270 

1,260

1,260 

1,270 

1,560 

1,560 

1,600

1,630 

1,610 

1,560 

1,510 

1,430

1,380 

1,580 

1,570 

1,570 

1,380

1,360 

1,380 

1,570 

1,560 

1,560 

1,580

Jan.

1,560 

1,560 

1,590 

1,430 

1,560

1,350 

1,550

1,560 

1,560 

1,570

1,560 

1,350 

1,540 

1,350 

1,370

1,340 

1,300 

1,510 

1,510 

1,510

1,520 

1,320 

1,520 

1,520 

1,320

1,520 

1,320 

1,550 

1,540 

1,350 

1,370

Feb.

1,570 

1,560 

1,360 

1,570 

1,580

1,400 

1,400 

1,410 

1,410 

1,580

1,370 

1,400 

1,580 

1,370 

1,570

1,360 

1,550 

1,550 

1,550 

1,350

1,550 

1,340 

1,340 

1,520 

1,210

1,170 

1,150 

1,130

Month

Oct 

HOT 

Dec

C

Jai 

Pel 

Kai 

Apt 

Maj 

Jui 

Ju] 

Aug 

Sej

fFater year 1940-4

Mar.

1,130 

1,130 

1,130 

1,110 

1,110

1,110 

1,070 

1,040

1,040 

1,040

1,000 

962 

954 

740 

634

677 

698 

726 

740 

761

782 

810 

712 

652 

652

616 

810 

954 

930 

930 

1,000

Apr.

1,120 

1,550 

1,730 

2,580 

2,790

2,570 

2,570 

2,520 

2,500 

2,460

2,510 

2,260 

2,530 

2,340 

2,390

2,630 

2,680 

2,360 

2,060 

3,120

3,950 

5,270 

5,340 

5,420 

5,440

5,060 

5,060 

5,180 

5,680 

6,820

Secondfoot-days

32,166 

44,276 

42,290

1,441,580

41,660 

57,500 

27,650 

99,870 

230,810 

204,860 

251, S10 

243,920 

154,400

1,411,212

May

7,610 

7,690 

7,850 

7,800 

7,520

7,230 

7,070 

7,200 

7,560 

7,390

7,520 

7,470 

7,520 

7,610 

7,680

7.550 

7,610 

7,650 

7,660 

7,clO

7,470 

7,560 

7,230 

7,170 

7,230

7,230 

7,280 

7,310 

7,280 

7,560 

7,560

Maximum

1,510 

2,140 

1,650

8,720

1,430 

1,410 

1,130 

6,820 

7,850 

7,980 

8,390 

8,170 

7,550

8,390

June

7,340 

7,230 

7,120 

7,040 

6,960

6,740 

6,420 

5,880 

5,760 

5,610

5,610 

5,910 

6,240 

6,500 

6,550

6,580 

6,660 

6,850 

7,090 

6,980

6,800 

6,740 

6,770 

7,040 

7,590

7,520 

7,800 

7,950 

7,980 

7,820

July

7,550 

7,550 

7,660 

7,610 

7,740

7,690 

7,880 

8,120 

3,310 

8,310

8,510 

8,510 

8,510 

8,510 

8,390

8,390 

8,360 

8,360 

8,360 

8,360

8,360 

8,280 

8,250 

8,280 

8,340

8,250 

8,170 

8,150 

8,040 

7,880 

7,950

Minimum

545 

834 

1,200

545

1,500 

1,150 

616 

1,120 

7,070 

5,610 

7,550 

7,540 

1,820

545

Aug.

7,930 

8,010 

3,090 

7,930 

7,980

7,980 

8,010 

8,010 

7,980 

7,980

8,010 

8,040 

7,900 

7,610 

7,560

7,540 

7,560 

7,420 

7,500 

7,770

8,120 

8,090 

8,150 

8,170 

8,010

7,820 

7,880 

7,880 

7,950 

7,930 

7,630

Mean

1,058 

1,476 

1,564

3,938

1,344 

1,559 

892 

3,529 

7,445 

6,829 

8,123 

7,868 

5,147

5,866

Sept.

7,500 

7,440 

7,550 

7,440 

7,040

6,800 

6,660 

6,550 

6,400 

6,270

6,290 

6,140 

5,940 

5,660 

5,540

5,220 

4,640 

4,030 

4,160 

4,420

4,490 

4,470 

4,010 

5,470 

5,280

5,010 

5,060 

2,900 

2,200 

1,820

Run-off In 

acre-feet

65,80O 

87,820 

85,880

2,859,000

82,630 

74,580 

54,840 

198,100 

457,800 

406,300 

499,500 

483,800 

306,200

2,799,000
24 SNAKE RIVER MAIN STEM 

Snake River at Mllner, Idaho

Location.- Water-stage recorder, lat. 42°32', long. 114°01', In sec. 29, T. 10 S., R. 21 

E77"at Mllner, a quarter of a mile downstream from Mllner Dam. Altitude of gage, 4,062 

feet (from river-profile map).

Records available.- May 1909 to September 1941.

Ebctremes.- Maximum discharge during year, 2,180 second-feet Apr. 23 (gage height, 6.80 

reetj; minimum, 3 second-feet Apr. 3 (gage height, 1.20 feet).

1909-41: Maximum discharge, 44,400 second-feet June 12, 1909 (gage height, 20.10 

feet, site and datum then In use): minimum, 2 second-feet Mar. 17-28, 1936 (gage height, 

1.18 feet).

Remarks.- Records good. Flow regulated by American Falls Reservoir (see p. 19), Lake 

waicott (see p. 22) and other reservoirs having a combined .usable .capacity of about 

3,300,000 acre-feet, and greatly reduced by diversions above Mllner Dam for Irrigation. 

About 1,300,000 acres of land Irrigated by diversion from river and tributaries 

above station. Flow Includes some stored water released for use downstream by Idaho 

Power Co.

Cooperation.- Gage-height record furnished by Twin Falls Canal Co. and North Side Canal Co.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12

^4 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

252 

252 

252 

255 

284

446 

443 

443 

440 

440

457 

460 

457 

464 

460

460 

460 

460 

460 

464

464 

464 

460 

460 

464

464 

464 

464 

464 

457 

460

Hov.

460

464 

460 

492 

544

685 

1,340 

1,220 

1,140 

1,140

1,140 

1,120 

1,030 

973 

973

564 

SU 

308 

305 

297

297 

300 

300 

300 

297

297 

308 

316 

319 

316

Dec.

S25 

339 

368 

368 

368

368 

368 

368 

368 

368

368 

368 

374 

476 

544

540

544 

549 

540 

540

567 

598 

598 

598 

598

590 

567 

549 

544 

544 

540

Jan.

540 

540

544 

544 

544

544 

540 

544

544 

549

549 

544 

544 

549 

549

554 

549 

554 

554 

549

549 

549 

549 

549 

549

549 

549 

549 

549 

549 

549

Feb.

554 

554 

549 

549 

549

549 

554 

554 

554 

554

554 

540 

554 

554

554

554 

554 

549 

549 

549

549 

549 

549 

549 

357

252

268 

284

Month

Dot 

Hot 

Dec

C

Jar 

Fet 

Mar 

Apr 

May 

Jur 

Jul 

Aug 

Sep

in ater year 1940-4

Mar.

£84 

284 

2S4 

284 

278

273 

273 

276 

284 

284

294 

300 

294 

206 

8

8 

7 

6 

5 

5

5 

5 

5 

5 

5

5 

19 

36 

51 

29 

25

Apr.

12 

6 

3

4 

4

8

15 

17 

18 

17

17 

16 

15 

15 

12

10 

20 

663 

13 

11

10 

525 

859 

13 

15

37 

10 

9 

8 

7

Secondfoot-days

13,194 

18,016 

14,744

136,194

16,967 

14,388 

4,127 

2,389 

217 

192 

245 

3,977 

10,546

99,002

May

7 

8 

9 

10 

35

12 

9 

8 

6

5

5 

5 

5 

5 

5

5 

5 

5 

5 

5

6 

6

6 

5 

5

5 

5 

5 

5 

5 

5

Maximum

464 

1,340

598

3,430

554 

554 

300 

859 

35 

11 

11 

398 

359

1,340

June

5 

6 

6 

7 

6

7 

7 

6 

6 

6

6 

6 

6 

6 

6

6 

6

6 

6 

7

11 

9 

7 

6 

6

6 

6 

6 

6 

6

July

6 

6

6 

6 

6

6

7 

7 

7 

7

8 

8 

8

9 

9

8 

8 

8 

8 

8

8 

8

8 

9

11

10 

9 

9 

9 

9 

9

Minimum

252

297 

325

8

540 

252 

5 

3

5 

5 

6 

8 

305

3

Aug.

8 

8 

8 

8 

8

8 

8 

8 

8 

8

8 

8 

8 

8 

8

8 

8 

8 

8 

8

279 

316 

350 

350 

350

350 

356 

398 

398 

365 

305

Mean

426 

601 

476

372

547 

514 

135 

79.6 

7.00 

6.40 

7.90 

128 

352

271

Sept.

305 

314 

350 

356 

356

353 

356 

356 

356 

356

356 

353 

353 

353 

353

363 

353 

353 

348

550

356

356 

356 

356 

356

566 

356 

356 

356 

359

Run-off In 

acre-feet

26,170 

35,730 

29,240

270,100

33,650 

28,540 

8,190 

4,740 

430 

381 

486 

7,890 

20,980

196,400

4fi i <\77
SNAKE RIVER MAIN STEM 25

Snake. River near Kimberly, Idaho

Location.- Water-stage recorder, lat. 42°36', long. 114°22', in NWi sec. 4, T. 10 S., 

R. IB E., 1,800 feet downstream from Twin Falls power plant, 2i miles upstream from 

Shoshone Falls, and 4 miles north of Kimberly.

Records available.- July 1923 to September 1941. 

Average discharge.- 18 years, 2,131 second- feet.

Extremes.- Maximum discharge during year, 2,330 second-feet Apr. 23 (gage height, 8.66 

j; minimum, 29 second-feet (regulated) July 4 (gage height, 1.30 feet).

1923-41: Maximum discharge, 27,200 second-feet July 4, 1927 (gage height, 14.76 

feet, site and datum then in use), from rating curve extended above 20,000 second- feet; 

minimum, undetermined leakage through Twin Falls power plant at times since Nov. 23, 

1935.

Remarks.- Records good. Practically entire flow is diverted at Milner during irrigation 

season; no diversions between Milner and Kimberly. Flow regulated by Twin Falls 

power plant.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4 

5

6 

7

a

9 

10

11 

12

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

SO 

31

Oct.

747 

749 

726 

744 

736

741 

350 

925 

909 

897

901 

957 

909 

925 

937

949 

957 

941 

921 

925

949 

933 

933 

933 

921

909 

933 

925 

925 

a920 

a920

HOT.

a910 

a910 

397 

a900 

a9oO

al.OOO 

al,300 

al,700 

al,600 

1,550

1,570 

1,550 

1,540 

1,410 

1,400

1,360 

921 

765 

755 

754

741 

731

\ a726

Dec.

766 

722 

742 

810 

V74

768 

766 

765 

771 

772

f769 

f763 

749 

759 

758

933 

953 

977 

977 

953

945 

977 

1,010 

1,020 

1,010

1,000 

1,020 

985 

945 

969 

949

Jan.

909 

913 

937 

937 

925

953 

953 

929 

921 

941

941 

941 

933 

949 

941

949 

909 

917 

941 

925

921 

937 

945 

941 

929

953 

953 

921 

926 

937 

909

Feb.

925 

929 

909 

913 

921

925 

925

921 

937 

969

973 

965 

925 

901 

917

909 

881 

921 

893 

335

893 

881 

897 

835 

886

731 

579 

600

Month

Oct 

No\ 

Dec

C

Jar 

Fel 

Mai 

Apr 

Maj 

Jut 

Jul 

Auj 

Sei

1

alendar year 19. 10......................

y. .....................................

ater year 1940-'

Mar.

643 

590 

627 

612 

603

613 

605 

587 

533 

613

627 

609 

621 

646 

576

358 

397 

298 

285 

346

350 

372 

288 

354 

31V

326 

342 

332 

336 

337 

404

Apr.

334 

349 

333 

322 

346

299 

323 

304 

334 

334

349 

333 

322 

342 

324

319

339 

562 

709 

334

367 

497 

1,030 

850 

393

386

316 

394 

326 

361

Secondfoot -days

27,547 

30,952 

27,032

281,679

28,935 

24,795 

14,609 

12,145 

10,354 

10,860 

12,137 

17,036 

24,286

240,733

May

322 

347 

346 

342 

366

342 

349 

369 

333 

331

340 

340 

320 

324 

321

313 

330 

305 

322 

330

322 

326 

290 

372

> 330

333 

330 

367

Maximum

957 

1,700 

1,020

3,760

953 

973 

646 

1,030 

372 

409 

493 

909 

361

1,700

June

349 

336 

339 

336 

341

368 

400 

409 

339 

382

331 

331 

370 

381 

340

379 

343 

373 

362 

353

366 

363 

349 

338 

345

358 

334 

376 

349 

365

July

395 

351 

493 

139 

479

383 

383 

362 

390 

383

395 

376 

374 

382 

336

396 

387 

395 

388 

382

386 

394 

397 

416 

409

399 

418 

453 

409 

429 

408

Minimum

726 

722

271

909 

579 

285 

299 

290 

334 

139 

407 

677

139

Aug.

403 

453 

419 

448 

420

416 

418 

423 

407 

413

424

437 

413 

434 

423

438 

435 

446 

451 

447

605 

632 

723 

704 

778

803 

744 

877 

877 

909 

810

Mean

889 

1,032 

374

770

933 

886 

471 

405 

334 

362 

392 

55O 

810

600

Sept.

677 

733 

740 

789 

796

789 

803 

792 

789 

796

861 

824 

838 

846 

838

831 

828 

828 

824 

817

324 

824 

833 

838 

828

828 

828 

806 

817 

817

Run-off in 

acre-feet

54,640 

61,390 

53,720

558,700

57,390 

49,180 

28,930 

24,090 

20,540 

21,540 

24,070 

33,790 

48,170

477,500

a No .gage-height record; discharge computed on basis of records for Snake River at Milner and 

near Twin Falls.

f Discharge computed from partly-estimated gage heights.
26 SNAKE RIVER MAIN STEM

Snake River near Twin Falls, Idaho

Location.- Water-stage recorder, lat. 42°36', long. 114°29', in SWiSWi sec. 33, T. 9 8., 

R. 17 E., at Perrlne Bridge, 200 feet upstream from outlet of Blue Lakes, 4 miles 

north of the city of Twin Falls, and 4 miles downstream from Shoshone Falls.

Records available.- September 1911 to June 1917, May 1919 to September 1941. 

Average discharge.- 27 years (1911-16, 1919-41), 3,671 second-feet.

Extremes.- Maximum discharge during year, 1,940 second-feet Nov. S (gage height, 3.85 

feet); minimum, 317 second-feet (regulated) Mar. 27, 28 (gage height, 1.84 feet).

1911-17, 1919-41: Maximum discharge observed, 32,200 second-feet June 10, 1941 

(gage height, 13.3 feet) from rating curve extended above 29,000 second-feet; 

minimum, 250 second-feet (estimated) Apr. 16, 1936.

Remarks.- Records good except those for periods of no gage-height record, which are fair. 

Flow regulated by Twin Falls and Shoshone Falls power plants. No diversion except by 

small ranch ditches between this station and station at Milner, where practically 

entire flow Is diverted during irrigation season.

Discharge, In second-feet, water year October 1940 to September 1941

Bay

1 

2 

S 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

961 

961 

970 

902 

927

952 

961 

1,040 

1,090 

1,070

1,080 

1,090 

1,100 

1,090 

1,090

1,090 

1,100 

1,100 

1,090 

1,080

1,100 

1,110 

1,100 

1,100 

1,080

1,100 

1,110 

1,100 

1,100 

1,090 

1,090

Hov.

1,080 

1,100 

1,030 

1,080 

1,080

1,120 

1,460 

1,910 

1,770 

1,730

1,740 

1,730 

1,730 

1,610 

1,620

1,560 

1,210 

986 

927 

902

910 

902 

878 

862 

878

886 

870 

830 

838 

902

Dec.

878 

878 

878 

878 

927

918 

910 

910 

910 

910

902 

902 

886 

370 

878

961 

1,060 

1,080 

1^090 

1,070

1,060 

1,030 

1,120 

1,130 

1,120

1,110 

1,140 

1,110 

1,070 

1,080 

1,070

Jan.

1,010 

1,010 

1,010 

1,030 

1,020

1,030 

1,060 

1,030 

1,010 

1,030

1,030 

1,020 

1,010 

1,030 

1,060

1,050 

1,010 

1,010 

1,040 

1,040

1,030 

1,040 

1,050 

1,050 

1,030

1,050 

1,080 

1,020 

1,020 

1,030 

1,020

Feb.

995 

1,010 

1,010 

996 

1,000

1,010 

1,020 

1,010 

1,010 

1,060

1,060 

1,060 

995 

986 

986

995 

970 

986 

978 

978

978 

978 

995 

986 

978

902 

792 

672

Month

Oct 

Hoi 

Dec

C

Jar 

Fet 

Mai 

Api 

Maj 

Jvu 

Ju3 

Aug 

Sei

Y

alendar year 19 40. .....................

ater year 1940-

liar.

692 

706 

672 

692 

713

706 

692 

635 

S96 

68S

685 

692 

692 

699 

640

495 

480 

437 

406 

538

538 

437 

432 

394 

424

406 

398 

398 

424 

437 

465

Apr.

506 

450 

446 

450 

466

442

442 

446 

446 

460

470 

466 

450 

455 

446

456 

466 

495 

808 

620

475 

516 

713 

1,170 

672

527 

475 

475 

470 

437

Secondfoot-days

32,824 

36,181 

30,786

340,417

31,960 

27,395 

17,356 

15, 591 

14,239 

16, 497 

16,923 

21,009 

29,332

290,093

May

45G 

46S 

460 

465 

46E

46E 

46E 

46E 

4SC 

450

466 

45E 

450 

442 

450

446 

450 

460 

460 

460

450 

446 

450 

45C 

455

45S 

470 

48E 

490 

495 

505

Maximum

1,110 

1,910 

1,140

4,480

1,080 

1,060 

713 

1,170 

505 

640 

602 

1,070 

1,020

1,910

June

516 

627 

622 

616 

516

527 

602 

640 614" 

620

602 

554 

544 

549 

549

532 

538 

538 

549 

544

664 

560. 516" 

522 

544

522

516 

544 

554 

566

Minimum

90 

83 

87

38,

1,01 

67 

39 

43 

44 

51 

46 

51 

87

39

July

644 

544 

654 

466 

544

602

538 

532

> a540 

 a560

Aug.

a560 

a660 

578 

560 

660

660 

516 

564 

549 

564

549 

560 

560 

544 

560

560 

572 

596 

690 

566

666 

830 

808 

362 

918

870 

862 

927 

978 

1,070 

1,010

Mean

Z 1,059 

D 1,206 

0 993

Z 930

D 1,031 

Z 978 

4 560 

7 520 

Z 469 

6 550 

5 546 

6 678 

0 978

4 795

Sept.

952 

870 

970 

978 

978

970 

970 

978 

978 

970

1,000 

1,000 

986 

1.000 

1,000

1,000 

970 

978 

978 

978

970 

970 

1,000 

1,080 

986

986 

978 

978 

970 

970

Run- off tn 

acre-feet

65,110 

71,760 

61,060

675,200

63,390 

54.340 

34,430 

30,980 

28,240 

32,720 

33,570 

41,670 

58,160

575,400

a No gage-height record} discharge computed on basis of records for stations at Miner and near 

Kimberly.
SNAKE RIVER MAIN STEM 27

Snake River near Hagerman, Idaho

Location.- Water-stage recorder, lat. 42°46', long. 114°53', In NWt sec. 1, T. 8 S., R. 

13 E., just upstream from Upper Salmon Falls, an eighth or a mile upstream from Owsley 

bridge, 4 miles south of Hagerman, and 11 miles upstream from Big Wood River. Datum 

of gage is 2,873.46 feet above mean sea level.

Records available.- August 1912 to June 1917, July 1919 to September 1941. 

Average discharge.- 25 years (1912-15, 1919-41), 7,923 second-feet.

Extremes.- Maximum discharge during year, 7,240 second-feet Nov. 12 (gage height, 4.95 

 feet);' minimum, 4,660 second-feet Mar. 29 (gage height, 4.31 feet).

1912-17, 1919-41: Maximum discharge, 35,100 second-feet June 10, 1914; maximum 

gage height, 9.12 feet June 7, 1936: minimum discharge, 4,030 second-feet July 15 to 

Aug. 2, 1915 (gage height, 3.1 feet). Data in 1916 and 1917 insufficient for determination of maximum and minimum discharge.

Remarks.- Records good. Practically entire flow of river diverted at Milner during irrigation season; only minor diversions below Milner.

Rating table, water year 1940-41 (gage height, In feet, and discharge

In second-feet) 

(Shifting-control method used July 5 to Sept. 30)

4.3 

4.6 

4.9 

5.2

4,625

5,825

7,025

8,300

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

6,780 

6,320 

6,860 

6,730 

6,700

6,700 

6,660 

6,700 

6,740 

6,700

6,660 

6,580 

6,540 

6,540 

6,500

6.580 

6,580 

6,540 

6,500 

6,500

6,500 

6,500 

6,460 

6,460 

6,500

6,500 

6,540 

6,540 

6,540 

6,540 

6,500

Nov.

6,500 

6,540 

6,540 

6,500 

6,380

6,340 

a6,400 

a6, 700 

h6,940 

a7,000

a7,100 

a7,200 

a7,100 

a7,000 

a6,900

hS, 820 

a6,800 

a6,600 

a6,400 

a6,300

a6,300 

a6,300 

6,140 

6,180 

6,220

6,340 

6,340 

6,340 

6,260 

6,300

Dec.

6,260 

6,220 

6,220 

6,220 

6,260

6,260 

6,220 

6,180 

6,180 

6,140

6,100 

6,060 

5,980 

5,820 

5,860

5,940 

6,100 

6,220 

6,300 

6,340

6,300 

6,300 

6,340 

6,420 

6,380

6,300 

6,380 

6,300 

6,300 

6,300 

6,300

Jan.

6,060 

5,360 

5,900 

6,020 

6,060

6,140 

6,180 

6,260 

6,220 

6,180

6,130 

6,140 

6,140 

6,180 

6,260

6,180 

6,140 

6,100 

6,140 

6,140

6,180 

6,220 

 6,220 

6,220 

6,220

6,180 

6,140 

6,060 

6,020 

6,020 

6,060

Feb.

6,020 

6,060 

6,020 

6,020 

6,020

6,060 

6,100 

6,060 

6,060 

6,100

6,140 

6,140 

6,100 

6,060 

6,020

5,980 

5,940 

5,940 

5,940 

5,940

5,940 

5,940 

5,940 

5,940 

5,900

5,900 

5,740 

5,660

Month

Oct 

No\ 

Dec

C

Jar 

Fet 

Mai 

Apr 

Maj 

Jur 

Ju3 

Auj 

Sej

1

alendar year 194 0....... ...............

rater year 1940-4

Mar.

5,530 

5,620 

5,580 

5,540 

5,540

5,540 

5,500 

5,460 

5,420 

5,380

5,420 

5,4SO 

5,420 

5,420 

5,420

5,300 

5,180 

5,140 

5,020 

5,020

5,180 

5,100 

5,060 

5,100 

4,980

4,900 

4,820 

4,780 

4,740 

4,980 

5,060

Apr.

5,020 

5,020 

5,020 

5,060 

5,100

5,220 

5,180 

5,140 

5,100 

5,300

5,420 

5,340 

5,340 

5,380 

5,260

5,340 

5,500 

5,460 

5,500 

5,620

5,380 

5,140 

5,060 

5,500 

5,620

5,260 

5,100 

5,060 

5,020 

4,980

Seeondfoot-days

204, 540 

196, 780 

192,500

2,169,830

190 , 020 

167, 680 

162,620 

157, 440 

160, 800 

172, 420 

166,620 

182, 740 

199,840

2,154,000

May

4,930 

5,100 

5,180 

5,140 

5,180

5,140 

5,140 

5,220 

5,260 

5,180

5,180 

5,220 

5,180 

5,100 

5,100

5,100 

5,060 

5,180 

5,300 

5,140

5,060 

5,020 

5,020 

4,980 

5,060

5,220 

5,420 

5,380 

5,460 

85,500 

85,600

Maximum

6,860 

7,200 

6,420

8,680

8,260 

6,140 

5,620 

5,520 

5,600 

6,380 

5,820 

6,460 

6,860

7,200

June

a5,750 

85,750 

a5, 750 

a5,750 

a5,700

85,700 

a6,000 

6,380 

6,380 

6,300

6,180 

5,940 

5,780 

5,740 

5,700

5,660 

5,620 

5,580 

5,620 

5,660

5,660 

5,660 

5,580 

5,500 

5,420

5,500 

5,500 

5,500 

5,620 

5,540

July

a5,500 

a5,400 

a5,400 

a5,300 

5,140

5,300 

5,300 

5,220 

5,220 

5,220

5,220 

5,220 

5,220 

5,220 

5,220

5,220 

5,260 

5,260 

5,260 

5,300

5,300 

5,340 

5,380 

5,460 

5,500

5,540 

5,620 

5,740 

5,820 

5,780 

5,740

Minimum

6,460 

6,140 

5,820

4,740

5,860 

5,660 

4,740 

4,980 

4,980 

5,420 

5,140 

5,620 

6,380

4,740

Aug.

5,740 

5,740 

5,740 

5,700 

5,660

5,620 

5,620 

5,620 

5,700 

5,740

5,780 

5,780 

5,620 

5,360 

5,860

5,820 

5,820 

5,620 

5,780 

5,780

5,780 

5,940 

6,020 

6,060 

6,180

6,220 

6,180 

6,220 

6,300 

6,380 

6,460

Mean

6,598 

6,559 

6,210

5,928

6,130 

5,989 

5,246 

5,248 

5,187 

5,747 

5,375 

5,895 

6,661

5,901

Sept.

6,420 

6,380 

6,420 

6,460 

6,460

6,500 

6,500 

6,540 

6,620 

6,620

6,620 

6,700 

6,700 

6,780 

6,780

6,820 

6,860 

6,780 

6,740 

6,740

6,780 

6,700 

6,780 

6,820 

6,780

6,740 

6,740 

6,740 

6,660 

6,660

Run-off In 

acre-feet

405,700 

390,300 

381,800

4,304,000

376,900 

332,600 

322,600 

312,300 

318,900 

342,000 

330,500 

362,500 

396,400

4,272,000

a No gage-height record) discharge computed on basis of records for Snake River below Lower 

Salmon Falls near Hagerman.

h Computed from staff gage reading.

461677 0-42-3
28 SNAKE RIVER MAIN STEM 

Snake River below Lower Salmon Falls, near Hagerman, Idaho

Location.- Water-stage recorder, lat. 42°51'36", long. 114°54'42", In lot 3, sec. 2,

 T. 7 S., R. 13 E., half a mile downstream from Lower Salmon Falls power plant, 1 mile 

upstream from Big Wood (Malad) River, and 3i miles north of Hagennan.

Records available.- November 1937 to September 1941.

Extremes.- Maximum discharge during year, 8,060 second-feet Sept. 14 (gage height, 7.83

 feet); minimum, 4,260 second-feet (regulated) Mar. 20 (gage height, 5.76 feet), from 

rating curve extended below 5,000 second-feet.

1937-41: Maximum discharge, 23,800 second-feet May 6, 1938 (gage height, 13.93 

feet); minimum, 3,800 second-feet (regulated) Mar. 28, 29, 1938 (gage height, 5.40 

feet), from rating curve extended below 5,000 second-feet.

Remarks.- Records excellent except those for periods of no gage-height record, which are 

good. Flow regulated by Lower Salmon Falls power plant. Practically entire flow at 

Milner diverted during irrigation season; only minor diversions below Milner.

Discharge, in second-feet, »ater year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

og

23 

24 

25

26

27 

28 

29 

30 

31

Oct.

7,420 

7,4SO 

7,520 

7,4SO 

7,300

7,280 

7,260 

7,230 

7,320 

7,280

7,220 

7,130 

7,140 

7,140 

7,020

7,060 

7,080 

7,060 

7,040 

7,040

7,020 

7,040 

7,020 

7,020 

7,060

7,120 

7,100 

7,100 

7,120 

7,120 

7,100

Nov.

7,030 

7,160 

7,160 

7,100 

7,000

6,940 

6,980 

7,340 

7,520 

7,460

7,720 

7,730 

7,700 

7,660 

7,600

7,580 

7,530 

7,220 

7,020 

6,920

6,920 

6,920 

6,320 

6,760 

6,730

6,900

1 >a6,900

}

'

Dec.

 a6,800

Ue,700

6,600 

6,740 

6,860 

6,960 

6,930

6,960 

6,940 

7,020 

7,040 

7,040

6,960 

7,020 

6,930 

6,960 

6,960 

6,900

Jan.

6,760 

6,520 

6,560 

6,640 

6,630

6,730 

6,340 

6,340 

6,820 

6,730

6,7SO 

6,760 

.6,740 

6,760 

6,860

6,320 

6,760 

6,740 

6,760 

6,730

6,300 

6,320 

6,840 

6,320 

6,820

6,320 

6,320 

6,760 

6,660 

6,660 

6,700

Feb.

6,660 

6,660 

6,660 

6,640 

6,640

6,680 

6,740 

6,630 

6,680 

6,700

6,730 

6,720 

6,720 

6,660 

6,620

6,600 

6,600 

6,530 

6,600 

6,580

6,530 

6,600 

6,620 

6,640 

6,600

6,560 

6,440 

6,300

Month

00 1

Non 

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Jun 

Jul 

Aug 

Set

n

alendar year 1940.......... ............

ater year 1940-4

Mar.

6,160 

6,200 

6,130 

6,160 

6,120

6,120 

6,030 

6,060 

6,000 

5,960

6,040 

6,040 

6,020 

6,000 

6,040

5,940 

5,820 

5,740 

5,660 

5,540

5,320 

5,300 

5,560 

5,700 

5,560

5,420 

5,340 

5,230 

5,300 

5,520 

5,640

Apr.

5,600 

5,600 

5,600 

5,640 

5,620

5,730 

5,800 

5,720 

5,630 

5,360

6,020 

5,920 

5,960 

6,000 

5,800

5,780 

6,040 

6,OSO 

6,020 

6,200

5,940 

5,740 

5,600 

5,940 

6,f80

5,730 

5,560 

5,560 

5,500 

5,460

Seoondfoot-days

222,420 

215,220 

212,420

2,376,040

209,520 

135,540 

180,320 

174,020 

175,640 

189,360 

185,540 

196,940 

215,760

2,363,200

May

5,460 

5,560 

5,660 

5,600 

5,680

5,640 

5,640 

5,700 

5,740 

5,680

5,680 

5,680 

5,640 

5,580 

5,580

5,580 

5,500 

5,560 

5,760 

5,680

5,600 

5,540 

5,480 

5,500 

5,520

5,680 

5,760 

5,340 

5,940 

6,040 

6,140

Maximum

7,520 

7,780 

7,040

9,040

6,360 

6,730 

6,200 

6,200 

6,140 

7,000 

6,300 

6,330 

7,420

7,780

June

6,280 

6,300 

6,320 

6,320 

6,280

6,280 

6,620 

7,000 

7,000 

6,930

6,880 

6,640 

6,430 

6,460 

6,400

6,260 

6,140 

6,120 

6,120 

6,140

6,160 

6,120 

6,O60

 a6,000

Minimum

7,02 

6,76

5,11

6,52 

6,30 

5,28 

5,46 

5,46

6,04 

6,34

5,23

July

 a6,000

5,340 

5,840 

5,360 

5,360 

5,340

5,840 

5,860 

5,900 

5,920 

5,940

5,360 

5,860 

5,920 

5,960 

5,930

6,040 

6,120 

6,240 

6,300 

6,300 

6,260

Aug.

6,240 

6,240 

6,240 

6,200 

6,140

6,120 

6,OSO 

6,040 

6,100 

6,100

6,260 

6,200 

6,300 

6,320 

6,340

6,300 

6,300 

6,300 

6,230 

6,260

6,240 

6,380 

6,460 

6,520 

6,620

6,680 

6,620 

6,640 

6,740 

6,300 

6,330

Mean

3 7,175 

D 7,174 

6,352

3 6,492

3 6,759 

3 6,626 

3 5,833 

3 5,301 

3 5,666 

6,312 

5,985 

3 6,353 

3 7,192

3 6,475

Sept.

6,830 

6,840 

6,340 

6,920 

6,920

6,960 

7,000 

7; 060 

7,120 

7,140

7,140 

7, -220 

7,260 

7,320 

7,320

7,360 

7,420 

7,340 

7,280 

7,260

7,300 

7,260 

7,360 

7,380 

7,400

7,340 

7,230 

7,300 

7,260 

7,280

Run-off in 

acre-feet

441,200 

426,900 

421,300

4,713,000

415,600 

368,000 

358,700 

345,200 

348,400 

375, 600 

368,000 

390,600 

428,000

4,688,000

a No gage-height record; discharge computed on basis of records for stations near Hagerman and at 

King Hill.
SNAKE RIVER MAIN STEM 29

Snake River at King Hill, Idaho

Location.- Water-stage recorder, lat. 43°00', long. 1150 11', In SWi sec. 7, T. 5 S., 

R. 11 E., 300 feet east of railroad station at King Hill and 20 miles downstream, 

fron Big Wood River.

Records available.- May 1909 to September 1941. 

Average discharge.- 32 years, 10,C50 second-feet.

Extremes.- Maximum discharge during year, 9,560 second-feet Nov. 12: maximum gage height,

 7.18 feet Sept. 14; minimum discharge, 6,120 second-feet May 23 (gage height, 5.66 

feet).

1909-41: Maximum discharge observed, 47,200 second-feet June 22, 1918 (gage 

height, 16.3 feet), from rating curve extended above 30,000 second-feet; minimum 

observed, 4,760 second-feet July 7-9, Aug. 15, 16, 1910 (gage height, 4.5 feet).

Remarks.- Records excellent except those for August and September, which are good.

 Practically entire flow at Milner diverted during Irrigation season so that flow at 

King Hill Is derived largely from springs and seepage'entering below Milner.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

S3 

29 

30 

31

Oct.

8,320 

3,900 

3,950 

8,340 

3,740

3,690 

3,640 

3,640 

3,690 

3,660

8,690 

3,690 

8,740 

3,660 

3,610

3,660 

3,690 

3,710 

3,690 

3,660

3,660 

3,660 

8,660 

3,690 

3,710

3,770 

3,340 

3,790 

3,320 

3,790 

3,770

NOT.

3,710 

3,770 

3,320 

3,790 

3,610

3,560 

S,560 

3,370 

9,230 

9,160

9,400 

9,430 

9,370 

9,310 

9,260

9,230 

9,260 

9,000 

3,660 

3,560

3,640 

3,640 

3,330 

3,230 

3,280

8,430 

3,380 

3,400 

3,400 

3,380

Dec.

3,330 

3,300 

8,300 

3,280 

3,300

3,330 

3,280 

3,260 

3,260 

3,130

3,100 

3,060 

7,930 

7,730 

7,300

7,330 

7,960 

3,130 

3,230 

3,330

8,300 

3,300 

3,360 

3,430 

3,460

3,360 

3,430 

3,400 

3,360 

3,330 

8,330

Jan.

3,080 

7,330 

7,780 

7,880 

7,900

7,960 

8,030 

3,080 

3,060 

3,030

3,030 

3,000 

7,960 

3,030 

3,080

3,080 

7,930 

7,960 

7,960 

7,930

7,930 

3,030 

8,030 

8,080 

3,080

3,130 

3,100 

3,030 

7,930 

7,960 

7,960

Feb.

7,960 

7,930 

7,960 

7,930 

7,930

7,960 

3,130 

3,160 

3,100 

3,100

3,260 

3,400 

8,400 

8,200 

3,080

3,030 

7,930 

7,900 

7,900 

7,880

7,880 

7,930 

3,030 

3,260 

3,230

3,060 

7,360 

7,730

Month

Oct 

Hoi 

De<

C

Jar 

Fet 

llai

Api 

Kaj 

Jui 

Ju3 

AUJ 

Sei

1

 11 .

y.. ....................................

rater year 1940-4

liar.

,800 

,930 

,900 

,730 

,730

,710 

,560 

,540 

,470 

,370

,390 

,320 

,320 

,300 

,350

,270 

,180 

,150 

,030 

,940

,130 

,230 

,130 

,130 

,060

6,920 

6,760 

6,710 

6,660 

6,730 

6,940

Apr.

6,920 

6,370 

6,350 

6,300 

6,830

6,940 

6,960 

6,S30 

6,760 

6,940

,200 

,030 

,030 

,110 

,940

,940 

,130 

,150 

,080 

,300

7,130 

6,370 

6,710 

6,990 

7,470

7,110 

' 6,330 

6,730 

6,690 

6,570

Secondfoot-days

270,530 

263,320 

255,230

2,379,530

248,050 

225,170 

225,590 

208,310 

209,160 

229,330 

222,650 

231,510 

255,390

2,346,240

May

6,500 

6,570 

6,710 

6,640 

6,710

6,710 

6,660 

6,730 

6,830 

6,730

6,660 

6,710 

6,730 

6,660 

6,600

6,600 

6,660 

6,660 

6,900 

6,330

6,710 

6,640 

6,600 

6,530 

6,600

6,730 

6,370 

6,940 

7,080 

7,270 

7,390

Maximum

8,950 

9,430 

3,460

10,600

3,130 

3,400 

7,930 

7,470 

7,390 

3,710 

7,760 

3,100 

3,370

9,430

June

7,540 

7,560 

7,630 

7,630 

7,630

7,590 

3,000 

3,580 

3,710 

3,460

8,430 

3,030 

,830 

,710 

,730

,590 

,590 

,420 

,440 

,490

,540 

,490 

,440 

,320 

,150

,200 

,130 

,130 

,350 

,390

July

,350 

,300 

,230 

,130 

,200

,150 

,390 

,110 

,060 

,030

,030 

,030 

,060 

,060 

,060

,080 

,030 

,080 

,130 

,150

,030 

,030 

,060 

,030 

,110

,130 

,270 

,420 

,490 

,510 

,760

Minimum

8,610 

3,230 

7,780

6,370

7,780 

7,730 

6,660 

6,570 

6,500 

7,150 

7,030 

7,110 

8,030

6,500

Aug.

,420 

,390 

,370 

,350 

,270

,230 

,150 

,110 

,130 

,130

,350 

,300 

,320 

,370 

,370

,350 

,320 

,420 

,420 

,440

,350 

,470 

,680 

,680 

,730

,300 

,730 

,730 

,900 

7,930 

8,100

Mean

3,727 

8,794 

3,233

7,363

8,002 

3,042 

7,277 

6,960 

6,747 

7,661 

7,132 

7,468 

3,530

7,793

Sept.

3,030 

3,030 

3,080 

8,200 

3,230

8,330 

8,130 

3,260 

3,360 

3,400

3,460 

3,530 

8,530 

3,560 

3,660

3,660 

3,740 

3,740 

3,640 

3,610

3,660 

3,610 

3,710 

3,320 

3,370

3,320 

8,340 

3,790 

8,770 

8,770

Run-off in 

acre-feet

536,600 

523,300 

506,200

5,712,000

492,000 

446,600 

447,500 

414,200' 

414,900 

455,900 

441,600 

459,200 

507,600

5,646,000
30 SNAKE RIVER MAIN STEM 

Snake River near Murphy, Idaho

Location.- Water-stage recorder, lat. 43°18', long. 116°26', In NE* sec. 35, T. IS.,

 R. 1 W., 4i miles downstream from Swan Falls power plant and 7fc miles northeast of 

Murphy.

Drainage area.- 41,900 square miles.

Records available.- August to October 1912, August 1913 to September 1941.

Average discharge.- 28 years (1913-41), 10,590 second-feet.

Extremes.- Maximum discharge during year, 10,800 second-feet Aug. 11 (gage height, 5.15

 feet}; minimum, 6,230 second-feet Aug. 11 (gage height, 3.54 feet).

1912-41: Maximum discharge, 47,300 second-feet June 22, 1918 (gage height, 13.95 

feet, site and datum then In use); minimum observed, 3,950 second-feet (discharge 

measurement) July 20, 1934, when stage was below Intake pipe.

Remarks.- Records excellent except those for periods of no gage-height record, which are

 good. Large diurnal fluctuations of short duration are caused by operation of gates 

and power plant at dam. Several diversions by pumping between this station and station at King Hill.

Discharge, In second-feet, water year October 194O to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

8,9SO 

9.04O

Ia9,100 

.aS.SOO

la9,OOO

Nov.

.a9,OOO

 a9,500

9,390 

9,010

S,S10 

8,S70 

9,010 

8,750 

3,630

S,660 

S,S70 

8,690 

8,690 

8,750

Dec.

S,720 

S,720 

S.69O 

3,630 

8,600

8,630 

S,690 

S,630 

S,660 

8,660

8,630 

S,550 

8,430 

8,430 

3,260

8,260 

6,37O 

8,26O 

6,660 

6,720

8,870 

8,750 

8,690 

8,780 

8,810

8,870 

8,780 

8.S7O 

8,310 

6,750 

8,730

Jan.

8,690 

8,520 

8,370 

8.23O 

S,37O

8,460 

8,490 

8,520 

8,550 

8.60O

8,600 

8,520 

8,490 

S.58O 

8,520

8,660 

8,550 

8,460 

8,52O 

8,490

8,520 

8,580 

S,55O 

8,550 

8,600

8,580 

8,630 

8,630 

8,550 

8,550 

8,4-0

Feb.

3,460 

8,370 

8,34O 

8,340 

S.4OO

S,34O 

8,370 

6,6OO 

8,63O 

3,550

8,520 

S,6OO 

8,92O 

8,920 

8,660

8,520 

8,430 

8,370 

8,290 

8,340

8,340 

8,340 

6,400 

8,490 

6,660

S,75O 

3,520 

8,370

Month

Oct 

Nov 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

W

alendar year 194 0... ...................

ater year 1940-'

Mar.

8,140 

8,200 

8,320 

S,52O 

8,230

8,140 

8,170 

8,060 

8,OOO 

7,950

7,920 

7,390 

7,310 

7,780 

7,780

7,860 

7,310 

7,670 

7,610 

7,530

7,580 

7,530 

7,550 

*,640 

7,670

7,580 

7,410 

7.20O 

7,200 

7,25O 

7,300

Apr.

7,500 

7,47O 

7,41O 

7,390 

7,360

7,22O 

7.22O 

7,410 

7,220 

7,220

7,300 

7,67O 

7,410 

7,670 

7,530

7,360 

7.28O 

7,550 

7,530 

7,470

7,470 

7,500 

7,220 

6,980 

7,110

7,670 

7,410 

7,250 

7,200 

7,200

Seeondfoot-days

275,320 

273,130 

267,960

3,037,800

264,330 

237,340 

241,350 

221,200 

229,800 

239,470 

224,760 

244,850 

259,490

2,979,500

May

7,200 

7,170 

7,300 

7,410 

7,41O

7.47O 

7,410 

7.30O 

7,41O 

7,580

7,610 

7,530 

7,670 

7,310 

7,720

7,530 

7,410 

7,090 

7,28O 

7,440

7,390 

7,250 

7,110 

7,14O 

7,170

7,28O 

7,440 

7,500 

7,50O 

7,550 

7,720

Maximum

3,870

11,300

8,690 

S,920 

8,520 

7,670 

7,810 

9,330 

7,360 

8,690

-

June

7,780 

7,360 

7,920 

7,890 

7,950

7,950 

6,340 

6,4OO 

3,950 

9,330

9,330 

S.95O 

8,580 

8,400 

8,090

8,170 

,950 

,860 

,750 

,690

,750 

,720 

,530 

,530 

,230

7,220 

7,230 

7,360 

7,36O 

7,250

July

7,360 

7,250 

7,410 

7,110 

7,140

7,140 

7,14O 

7,110 

7,280 

7,O1O

7,O30 

7,090 

7,03O 

7,110 

7,010

7,O90 

7,200 

7,060 

7,17O 

7,2OO

7,250 

7,280 

7,220 

7,22O 

7,230

7,30O 

7,410 

7,690 

7,670 

7,640 

7,360

Minimum

8,630 

8,260

6,680

8,230 

8,290 

7,200 

6,930 

7,090 

7,220 

7,010 

7,530 

8,200

7.O10

Aug.

8,O90 

7.S1O 

7,330 

7,310 

7,670

7,310 

7,550 

7,640 

7,530 

7,61O

7,S6O 

8,69O 

8,260 

7,890 

S,OOO

7,95O 

S.OOO 

7.81O 

7,890 

7,81O

7,830 

7,750 

7,750 

7,920 

7,330

3,000 

8,140 

S,06O 

7,390 

6,O6O 

3,110

Mean

8,381 

9,104 

8,644

8,300

8,527 

8,494 

7,785 

7,373 

7,413 

7,932 

7,250 

7,398 

8,650

8,163

Sept.

3,200 

8,260 

8,290 

8,200 

8,230

3,340 

3,340 

S,49O 

3,430 

3,520

8,600 

3,630 

3,600 

3,780 

8,730

3,920 

8,370 

3,900 

3,900 

S,95O

8,580 

8,600 

8,340

 aS,900 

8,340

Run-off In 

acre-feet

546, 100 

541,700 

531,500

6,025,000

524,300 

471,700 

473,700 

438,700 

455,SOO 

475,000 

445,300 

435,700 

514,700

5,910,000

a No gage-height record; discharge computed on Isasis of records for station at King Hill.
SNAKE RIVER MAIN STEM 31

Snake River at Welser, Idaho

Location.- Water-stage recorder, lat. 44°15 ? , long. 116°59', In sec. 31, T. 11 N., R. 5 W., 

 a tnird of a mile upstream from highway bridge at Welser. Datum of gage is 2,087.09 

feet above mean sea level, datum of 1929.

Records available.- October 1910 to September 1941. 

tainea oy u. a. weather Bureau since 1895.

Fragmentary gage-height record obAverage discharge.- 30 years (1911-41), 17,250 second-feet.

Extremes.- Maximum discharge during year, 28,000 second-feet June 9 (gage height, 6.74 

 feet); minimum, 7,880 second-feet July 16 (gage height, 2.42 feet).

1910-41: Maximum discharge observed, 83,100 second-feet May 23, 1921 (gage height. 

13.60 feet); minimum observed, 5,100 second-feet Aug. 5, 1924 (gage height, 1.35 feet). 

Flood of Mar. 3, 1910, reached a stage of 15.7 feet on old Weather Bureau gage Discharge about 100,000 second-feet), but flood of June 1894 was considerably higher.

Remarks.- Records excellent. Flow regulated by reservoirs above station and by Swan Falls 

power plant. Some diversions below Murphy for irrigation.

Cooperation.- Gage-height record collected In cooperation with U. S. Weather Bureau.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

12,400 

13,000 

13,100 

13,100 

13,300

12.800 

12,600 

12,300 

12,100 

12,000

11,900 

11,800 

11,600 

11,500 

11,500

11,400 

11,200 

11,300 

11,400 

11,300

11,400 

11,400 

11,600 

12,000 

12,400

13,600 

14,300 

14,000 

13,300 

13,200 

13,300

Nov.

13,500 

15,000 

15, SOO 

14,900 

14,300

13,800 

13,600 

13,900 

13,800 

13,700

13,800 

13, 600 

13,400 

13,200 

12,900

12,700 

12,900 

13,100 

13,100 

13,000

12,500 

12,000 

12,000 

12,200 

12,100

12,000 

12,000 

12,200 

12,400 

13,300

Dec.

13,300 

12,900 

13,000 

12,700 

12,600

12,600 

12,500 

12,600 

12,600 

12,400

18,000 

11,600 

11,000 

10,800 

10,800

10,800 

11,200 

11,500 

11,700 

12,400

12,600 

12,800 

13,000 

14,200 

14,500

14,300 

17,700 

17,000 

14,800 

13,600 

13,300

Jan.

13,100 

12,400 

12,000 

11,600 

11,500

11,800 

12,000 

12,000 

12,000 

11,800

11,600 

11,500 

11,600 

11,900 

12,200

12,200 

12,100 

12,000 

12,000 

12,200

12,300 

12,600 

12,600 

13,000 

14,900

20,100 

17,600 

15,700 

14,200 

13,400 

13,100

Feb.

12,800 

12,600 

12,600 

12,400 

12,200

12,200 

12,500 

13,000 

13,400 

13,500

17,100 

20,300 

19,600 

17,200 

16,200

15,200 

14,600 

13,900 

13,400 

13,600

13,700 

14,700 

15,600 

18, 300 

22,100

19,600 

17,400 

16,800

Month

Dot 

Not 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Ju3 

Aug 

Set

1

alendar year 194 0..... .................

Fater year 1940-4

Mar.

21,400 

25,000 

24,800 

21,800 

19,500

19,000 

18,800 

13,100 

17,500 

17,200

16,700 

16,400 

15,700 

15,100 

14,600

14,400 

14,800 

15, 300 

16,400 

17,100

17,000 

16,700 

16,500 

16,200 

15,600

15,700 

16, 100 

16,400 

16,500 

17,400 

18,400

Apr.

13,900 

20,600 

19,200 

13,800 

20,000

22,300 

21,000 

20,300 

20,300 

19,200

20,600 

21,000 

19,400 

19, 900 

 20,000

13.000 

17,200 

16,400 

15,800 

14,400

13,700 

13,000 

12,700 

12,200 

12,000

12,000 

12,800 

13,400 

12,300 

13^300

Seeondfoot-days

382,100 

396,700 

398,800

5,445,220

399,000 

426,500 

542,400 

510, 700 

588,700 

589,100 

286, 610 

305,800 

336,200

5,162,610

May

14,300 

14,900 

15,400 

17,200 

18,100

18,500 

17,900 

17, 200 

17,100 

16,700

16,500 

17,000 

18,200 

20,300 

21,000

22,100 

21,000 

20,600 

20,100 

19,100

18,200 

17,000 

16,600 

17,100 

19,400

21,000 

21,700 

24,200 

24,100 

22,900 

23,300

Maximum

14, 300 

15,300 

17,700

48,400

20,100 

22,100 

25,000 

22,300 

24, 200 

27, 600 

12,700 

10,900 

11,700

27,600

June

23,600 

22,800 

22,100 

21,300 

20,800

20,200 

20,900 

24,800 

27,600 

26,300

25,100 

23,900 

22,500 

21,000 

20,300

19,400 

18,400 

17,400 

18,500 

20,400

19,400 

18,600 

17,500 

15,900 

14,600

13,300 

12,600 

12,700 

13,500 

13,200

July

12,700 

12,300 

11, 900 

11, 500 

10,800

10,300 

9,900 

9,340 

3,760 

8,690

3,440 

8,230 

8,260 

8,230 

8,090

3,090 

8,090 

8,230 

3,230 

8,300

3,340 

3,400 

3,440 

3,300 

8,340

3,440 

3,830 

9,490 

10,000 

9,750 

9,900

Minimum

11,200 

12,000 

10,800

7,950

11,500 

12,200 

14,400 

12,000 

14,300 

12,600 

8,090 

8,730 

10,300

8,090

Aug.

9,710 

9,640 

9,600 

9,330 

9,190

9,050 

9,120 

3,730 

8,760 

8,760

9,160 

10,500 

10,900 

10,900 

10,300

10,400 

10,100 

10,400 

10,600 

10,300

10,300 

10,100 

9,970 

9,670 

9,860

10,000 

10,100 

10,100 

10,100 

10,000 

10,100

Mean

12,330 

13,220 

12,860

14,880

12,870 

15,230 

17,500 

17,020 

18,990 

19,640 

9,245 

9,865 

11,210

14,140

Sept.

10,300 

10,600 

10,800 

11,000 

10,900

10,900 

10,800 

10,800 

10,900 

11,000

11,000 

10,900 

11,100 

11,100 

11,300

11,300 

11,400 

11,400 

11,400 

11,500

11,500 

11,400 

11,600 

11,700 

11,600

11,600 

11,700 

11,600 

11,600 

11,500

Run-off In 

acre-feet

757, 900 

786,300 

791,000

10,800,000

791, 400 

846,000 

1,076,000 

1,013,000 

1,168,000 

1,168,000 

568,500 

606,500 

666,800

20,240,000
32 SNAKE RIVER MAIN STEM 

Snake River at Oxbow, Oreg.

Location.- Water-stage recorder, lat. 44°57', long. 116°51', In NWt sec. 16, T. 7 S., 

R. 48 E., at Oxbow, five-eighths of a mile upstream from Intake of diversion tunnel 

for Oxbow power plant.

Records available.- May 1923 to September 1941. 

Average discharge.- 18 years, 15,710 second-feet.

Extremes.- Maximum discharge during year, 29,300 second-feet June 9 (gage height, 12.97 

reet;; minimum, 8,320 second-feet July 17 (gage height, 7.62 feet).

1923-41: Maximum discharge, 72,800 second-feet May 4, 1938 (gage height, 20.25 

feet); minimum, 4,890 second-feet Aug. 6, 1924 (gage height, 6.30 feet).

Remarks.- Records excellent. Flow regulated by Irrigation, reservoirs, and power 

plants above station.

Rating table, water year 1040-41 (gage height, in feet, and discharge, in second-feet)

7.6 

7.9 

8.2 

8.5 

S.8 

9.2

8,270

9,080

9,950

10,890

11,900

13,320

9.6

10.0

10.4

10.8

11.2

14,790

16,310

17,880

19,500

21,160

11.6

12.0

12.4

12.5

13.2

22,870

24,650

26,510

28,450

30,470

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 -4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

12,900 

13,300 

13,900 

13,900 

13,800

13,700 

13,200 

13,100 

12,700 

12,400

12,400 

12,300 

12,100 

11,900 

11,900

12,100 

11,700 

11,600 

11,700 

11,700

11,600 

11,700 

11,900 

12,200 

13,100

13,400 

14,600 

15,300 

14,400 

14,200 

14,000

Nov.

14,200 

15,000 

16,600 

16,500 

15, 600

15,000 

14,800 

14,600 

14, SOO 

14, 600

14, 500 

14,500 

14,100 

14,000 

13, 800

13,500 

13,400 

13,600 

13,700 

13,700

13,500 

12,900 

12,500 

12,600 

12,800

12, 600 

12,600 

12,500 

12,900 

13,300

Dec.

14,000 

13,800 

13,500 

13,400 

13,200

13,200 

13,000 

12,900 

13,100 

12,800

12,500 

12, 100 

11,500 

11, 100 

11,OOO

10,800 

11,100 

11,600 

11,900 

12,200

13,000 

13,100 

13,400 

14,200 

14,800

14,900 

16, 200 

19,400 

16,200 

14,900 

13,700

Jan.

13,700 

13,200 

12,500 

12,200 

12,000

11,900 

12,200 

12,300 

12,200 

12,100

11, 900 

11,800 

11,800 

12,100 

12,300

12,600 

12,500 

12,600 

12,500 

12,600

12,900 

12,900 

13, 000 

13,300 

14,500

18,400 

20,000 

17,400 

15,800 

14,600 

14,000

Feb.

13,600 

13,300 

13,200 

13,200 

12,900

12,700 

13,200 

13,500 

14,200 

14,300

16,000 

20,600 

21,000 

19,400 

17,500

16,700 

15,700 

15,300 

14,500 

14,300

14,600 

15, 100 

16,300 

17,500 

22,100

22,200 

19,400 

18,500

Month

Oct 

No\ 

Dec

C

Jan 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Se]

VI

alendar year 1940..... .................

ater year 1940-4

Mar.

21,000 

26,700 

28,200 

26,500 

83,200

21,900 

21,100 

21,100 

20,200 

19,800

19,300 

18,800 

IS, 200 

17,400 

16,800

16,400 

16,500 

17,200 

17,700 

18,600

18,900 

18,700 

18,500 

18,200 

17,800

17,500 

17,800 

18,100 

18,300 

18,800 

19,900

Apr.

20,900 

21,800 

22,800 

21,400 

21,900

23,700 

24,400 

22,400 

22,800 

21,900

21,700 

23,100 

22,100 

21,400 

22,100

21,200 

19,700 

19,000 

18,200 

17,400

16,000 

15,300 

14,800 

14,400 

14,000

13,700 

14,000 

15,100 

15, 100 

14,800

Seoondfoot-days

398,700 

418,700 

412,500

5,710,920

413,800 

450,800 

609,100 

577, 100 

646,100 

652,700 

311,030 

313, 560 

345,300

5, 549, 390

May

15,900 

17,100 

18,000 

18,900 

20,300

20,600 

20,600 

19,900 

19,300 

19,300

18,900 

19,500 

20,200 

21, 600 

22,800

23,400 

23,500 

22,500 

22,100 

21,200

20,600 

19,500 

18,800 

18,800 

20,000

22,000 

22,500 

24,200 

25,300 

24,500 

24,300

Maximum

15, 300 

16,600 

19,400

49,400

20,000 

22,200 

28,200 

24,400 

25,300 

29,000 

14,900 

11,200 

11,900

29,000

June

24,600 

24,500 

23,900 

23,000 

22,500

22,100 

22,500 

24,6OO 

28,300 

29,000

27, 800 

26,500 

25,400 

24,200 

23,000

22,200 

21,200 

20,600 

19,800 

21,500

22,100 

21,000 

20,300 

18,900 

17,300

15,900 

14,700 

14,600 

15,200 

15,500

July

14,900 

14,300 

14,000 

13,400 

12,900

11,900 

11,400 

10,800 

10,100 

9,530

9,360 

8,970 

8,750 

8,770 

8,660

8,560 

8,450 

8,480 

8,640 

8,610

8,610 

8,640 

8,610 

8,660 

8,580

8,660 

8,910 

9,280 

10,200 

10,300 

10,100

Minimum

11, 600 

12,500 

10,800

S,000

11,800 

12,700 

16,400 

13,700 

15,900 

14,600 

8,450 

8,830 

10,600

8,450

Aug.

10,000 

9,920 

9,890 

9,710 

9,500

9,360 

9,300 

9,160 

8,850 

8,910

8,940 

9,860 

10,800 

11,200 

10,900

10,500 

10,400 

10,400 

10,800 

10,800

10,700 

10,500 

10,400 

10,100 

9,980

10,300 

10,400 

10,500 

10,600 

10,500 

10,400

Mean

12,860 

13,960 

13,310

15, 600

13,350 

16,100 

19, 650 

19,240 

20,840 

21,760 

10,030 

10,110 

11,510

15,200

Sept.

10,600 

10,900 

11,300 

11,400 

11,500

11,300 

11,200 

11,100 

11,200 

11,300

11,300 

11,200 

11,400 

11,400 

11,500

11,700 

all, 700 

all, 700 

all, 800 

all, SOO

all, 800 

11.8OO 

11,600 

11,900 

11,900

11, 800 

11,800 

11,900 

11,700 

11,800

Run-off In 

acre-feet

790,800 

830,500 

818,200

11,330,000

820,800 

894,100 

1,208,000 

1,145,000 

1,282,000 

1,295,000 

616,900 

621,900 

684,900

11,010,000

a No gage-height record; discharge interpolated.
SNAKE RIVER MAIN STEM 33

Snake River near Clarkston, Wash.

Location.- Water-stage recorder, lat. 46°25'30", long. 117°10'30", in lot 1, sec. 16, T. 

11 N., R. 45 E., 2 miles upstream from Alpowa Creek, 7 miles downstream from Clarkston, 

and 134 miles upstream from mouth. Datum of gage is 670 feet above mean sea level 

(Corps of Engineers, U. S. Army, bench mark).

Drainage area.- 103,200 square miles.

Records available.- October 1935 to September 1941, October 1915 to September 1922, 

August 1928 to September 1935, at site at Riparia, 66 miles downstream, published as 

Snake River at Riparia, Wash: all In reports of Geological Survey. October 1909 to 

September 1933 (at site at Riparia) in State Water-supply Bulletin 5.

Average discharge.- 32 years (1909-41), 47,360 second-feet.

Extremes.- Maximum discharge during year, 102,000 second-feet May 14 (gage height, 22.90 

minimum,- 14,100 second-feet Dec. 16 (gage height, 9.45 feet).

Maxlmuj? discharge observed, 270,000 second-feet May 20, 1921- (gage height, 

u?e) < mlnlTnum observed (revised), 10,600 stcond-feet

less

Maximum stage known, 24.7 feet, at Riparia, June 5, 1894, determined from floodmarfes 

by U. S. Weather Bureau (discharge, 409,000 second-feet).

Revisions.- The figure of minimum discharge for water year 1937 as published in 

Water-supply Paper 833 is probably too low. The minimum daily discharge for that year 

has been revised to 10,800 second-feet on Jan. 10.

Remarks.- Records excellent except those for periods of ice effect, which are fair. 

small diversions by pumping between this station and the station at Oxbow. Large 

diurnal fluctuation caused by power plant on Clearwater River above Lewiston, Idaho.

Revisions.- Revised figures of discharge for the water year 1937, superseding those 

puoiisned in Water-supply Paper 833, are given herein.

Discharge, In second-feet, water year October 1936 to September 1937

D«y

i

2

S

4

5

6

7

a

9

10

11

12

IS

14

16

16

17

18

19

20

21

22

23

24

25

26

27

28

29

SO

33.

Oct.

16,100

16,200

16,900

16,100

16,500

16,600

16,900

15,900

16,000

15,800

16,400

16,500

15,700

16,400

16,900

18,100

16,900

16,800

17,300

18,800

17,900

17,100

17,000

16,800

17,200

17,600

17,300

17,900

17,800

17,100

16,600

Nov.

17,900

17,500

17,400

16,900

16,400

17,100

18,000

18,300

17,900

17,500

16,400

17,100

16,900

17,100

17,800

17,400

17,600

17,700

18,300

17,800

17,900

17,100

17,400

17,100

16,600

15,800

15,700

15,400

14,400

15,000

-

Dee.

14,500

14,100

16,300

18,300

17,600

17,600

17,900

18,100

19,000

18,900

18,400

17,600

17,100'

16,800

16,500

16,600

16,900

17,900

17,200

18,100

17,700

17,500

17,600

13,400

19,000

18,600

17,800

17,400

17,200

16,800

16,900

Jan.

16,500

14,600

13,500

14,300

14,900

914,400

313,700

312,900

311,400

310,800

311,400

ll.SOO

12,700

19,500

13,800

15,500

b!6,100

b!7,300

)17, 600

bis, 800

b!8,400

blS.OOO

b!7,300

>16,500

)15,800

>16,100

b!5,100

16,400

15,900

16,300

)17,600

Feb.

b!7,600

b!7,300

b!7, 600

18,900

18,300

19,400

19,000

IS, 500

IS, 600

17,900

17,700

13,200

17,500

17,500

17,800

18,000

18,300

17,400

17,900

17,300

16,900

17,300

17,400

17,600

18,000

18,300

18,700

19,000

-

-

Mar.

19,800

90,100

20,900

22,100

22,800

93,700

93,600

93,600

93,600

24,100

95,100

97,400

30,400

31,900

31,300

54,900

37,700

39,400

37,900

34,400

99,800

27,300

26,700

95,900

95,800

95,900

96, 100

96,300

97,700

98,700

30,100

Apr.

39,800

39,900

42,200

40,700

39,500

40,500

39,200

39,600

38,700

38, 600

36,800

36,800

37,900

53,300

70,000

74,300

76,100

66,900

59,600

56,900

61,100

64,500

56,500

51,100

47,500

47,100

59,700

59,300

63,000

56,600

May

59,500

53,400

63,700

79,600

91,900

93,900

89,000

ea.soo

86,500

88,600

89,700

90,300

87,400

94,400

103,000

104,000

104,000

106,000

U.0,000

110,000

103,000

97,600

97,700

93,300

99,800

106,000

108,000

109,000

106,000

94,800

86,800

June

81,100

79,100

81,000

81,800

75,600

69,100

64,700

61,500

61,900

66,200

71,700

65,600

64,400

61,600

59,900

58,800

59,700

53,300

57,600

59,300

69,800

66,900

65,100

60,400

54,900

52,000

44,700

43,100

40,200

38,100

July

36,200

34,200

32,000

30,200

28,900

27,100

25,900

25,700

94,500

93,600

92,700

91,800

91,100

90,900

20,500

20,200

20,300

19,600

19,100

IS, 500

IS, 300

IS, 200

17,700

17,000

16,9OO

16,700

17,400

18,400

18,600

17,700

17,000

Aug.

16,700

16,500

17,900

17,300

16,600

16,200

15,900

15,200

15,600

15,200

15,300

15,300

15,100

14,800

14,500

14,400

14,000

14,400

13,900

13,900

13,600

13,500

13,400

13,900

13,600

14,400

13,700

13,400

13,600

13,900

13,500

Sept.

13,900

13,800

14,100

14,200

14,600

14,800

15,200

14,900

14,900

14,800

14,600

14,300

14,000

14,300

13,900

18,800

13,300

13,900

13,700

13,800

14,100

14,200

14,200

15,300

16,000

13,600

15,200

15,300

15,400

15,400

b Stage-discharge relation affected by Ice.
SNAKE RIVER MAIN STEM

Discharge, in second-feet, of Snake River near Clarkaton, Wash., 

water year October 1940 to Sect ember 1941

Day

1

2

S

4

5

6

7

8

9

10

11

12

IS

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

SO

31

Got.

23,500

24,800

25,800

31,700

31,200

28, 700

26,700

24,800

23,900

22,600

22,200

21,400

21,400

21,000

20,600

20,600

20,200

19,800

19,400

19,000

19,400

19,000

19,400

19,800

19,800

22,200

83,900

24,800

25,800

24,400

24,400

HOT.

24,400

25,300

27,700

29,700

28,200

26,700

25,300

25,800

27,200

26,700

26,200

25,300

S3, 900

22,200

21,800

21,800

22,200

22,600

23,100

23,900

23,100

22,200

21,400

21,000

20,200

21,000

21,000

21,400

26,700

36,000

"

Dec.

33,300

31,200"

29,200

28,700

29,700

29,700

29,700

28,200

27,200

27,200

25,300

23,500

20,600

17,900

15,800

15,500

16, 800

18,300

22,600

23,900

27,700

29,700

29,700

29,700

30,700

31,700

33,800

37,100

36,500

31,700

28,700

Jan,

26,200

24,400

22,200

SO, ZOO

20,200

21,800

22,200

23,100

22,600

22,200

21,400

20,600

20,200

20,600

22,200

22,200

22,600

23,900

28,700

29,200

28,200

27, 700

26,700

26,200

27,200

31,700

37,100

35,500

31,700

28,700

26,700

Feb.

25,300

25, 300

24,800

24,800

23,900

23,500

23,500

23,900

24,400

25,300

27,200

30,700

35,500

34,400

32,300

29,700

28,200

26,700

25,800

25,300

25,300

25,800

26,200

28,200

30,200

34,900

33,800

31,200

_

-

-

Mar.

32,800

41,700

52,800

50,700

47,400

43,500

41,100

39,900

59,400

38,200

37,700

36,000

34,400

33,300

31,700

30, 700

30,700

31,200

33,800

34,400

34,900

34,900

34,900

34,900

33,800

33,300

33,300

34,900

36,500

39,400

42,900

Apr.

46,000

48,600

55,500

54,900

52,100

52,800

52,800

60,700

48,000

49,300

51,400

53,500

53, 500

51,400

50,000

50,700

48,000

45,400

43,500

41,100

39,900

38,200

38,200

39,400

40,500

41,700

43,500

47,400

51,400

54,200

-

May

60,400

70,000

73,200

75,600

77,400

77,400

71,600

66,800

65,200

62,000

61,200

66,800

81,900

102,000

96,500

88,200

86,400

90,000

85,500

78,300

73,200

71,600

72,400

75,600

81,900

85,400

86,400

87,300

83,700

81,900

83,700

June

87,300

90,000

83,700

81,000

79,200

76,500

76,500

91,800

98,500

95,500

89,100

83,700

80,100

78,300

77,400

73,200

69,200

68,400

71,600

81,000

79,200

70,800

65,200

61,200

56,400

52,800

48,600

48,000

52,100

54,900

-

July

52,100

48,000

46,000

44,100

42,300

39,900

37,700

36,000

35,800

31,700

29,700

28,700

27,200

26,200

25,300

24,400

23,500

22,600

22,200

22,200

21,800

21,400

21,000

20,200

19,800

19,800

20,200

20,200

21,000

22,600

22.200

Aug.

21,400

20,600

20,200

19,800

19,400

18, 700

18,300

17,900

17,900

16,800

17,200

17,900

18,700

20,200

21,000

20,200

19,800

19,000

19,000

19,000

19,400

19,400

20,200

19,400

19,000

19,800

19,800

20,200

20,600

20,200

12*4QQ_

Sept.

20,200

19,400

19,800

20,200

21,400

22,600

25,100

22,200

21,800

21,400

22,600

22,200

22,200

25,900

23,900

26,700

25,800

24,800

24,400

24,800

24,400

25,900

23,500

25,100

22,600

22,600

22,200

22,600

22,600

22,200

-

Monthly discharge, in second-feet, 1936-37, 1940-41

Month

May.......................................

Water year 1936-37 .....................

May.......................................

September. ................................

Water year 1940-41 .....................

Seeondfoot-days

513,900 

510,600 

538,600

15,894,800

463,400 

503,000 

854,600 

1,518,300 

2,890,000 

1,875,100 

686,900 

459,000 

434,000

11,247,400

712,200 

734,000 

841,300

15,013,900

784,100 

776,100 

1,155,100 

1,431,600 

2,420,500 

2,221,200 

893,800 

600,400 

683,100

13,253,400

Maximum

17,800 

18,300 

19,000

215,000

18,800 

19,400 

39,400 

76,100 

110,000 

81,800 

36,200 

17,900 

16,000

110,000

31,700 

36,000 

57,100

125,000

37,100 

55,500 

52,800 

54,900 

102,000 

98,500 

52,100 

21,400 

26,700

102,000

Minimum

15,600 

14,400 

14,100

13,000

10,800 

1'6,900 

19,800 

32,800 

52,500 

38,100 

16,700 

13,400 

13,600

10,800

19,000 

20,200 

15,600

13,000

20,200 

23,500 

30,700 

38,200 

60,400 

. 48,000 

19,800 

16,800 

19,400

15.500

Mean

16,580 

17,020 

17,37C

43,430

14,950 

17,960 

27,570 

50,610 

95,250 

62,500 

22,160 

14,810 

14,470

30,810

22,970 

24,470 

27,140

41.020

25,290 

27,720 

37,260 

47,726 

78,080 

74,040 

23,830 

19,370 

28,770

56.310

Run-off in 

acre-feet

1,019,000 

1,013,000 

1,068,000

51,530,000

919,100 

997,700 

1,695,000 

3,012,000 

6,732,000 

3,719,000 

1,362,000 

910,400 

860,800

28,310,000

1,415,000 

1,456,000 

1,669,000

29.780,000

1,555,000 

1,539,000 

2,291,000 

8,840,000 

4,801,000 

4,406,000 

1,773,000 

1,191,000 

1,555,000

26.290r OOO
FLAT CHEEK BASIN 

Flat Creek near Jackson, Wyo.

35

.- ov*^ 6age, lat. 43°33', long. 110°37', in SWi sec. 35, T. 42 H., R. 115 W., 

lownstream from power plant of Jackson Hole Light & Power Co., 9 miles northeast 

of Jackson. Altitude of gage, 6,750 feet (from topographic map).

Drainage area.- 40 square miles.

Records available.- June 1933 to November 1941, except winters, (discontinued).

Extremes.- 1940-41: Maximum discharge observed during water year; 222 second-feet 

June 19 (gage height, 1.69 feet); minimum daily observed, 14 second-feet Apr. 20.

1933-41: 1-kximum discharge observed, 438 second-feet June 15, 1935 (gage height, 

3.48 feet, site and datum then in use); minimum observed, 7 second-feet Apr. 15-18, 

1935, but may have been less during winter months, when no records were obtained.

Remarks.- Records fair.

Cooperation.- Gage-height record collected by Jackson Hole Light & Power Co. under supervislon of the Geological Survey, in connection with a Federal Power Commission project.

Discharge, In second-feet, 1940-41

D«y

1 

2 

S

4 

5

6 

7 

8 

9 

10

U 

18 

IS

14 

15

16 

17 

18 

19 

80

SI 

28 

25 

84 

25

86 

27 

88 

29 

30 

51

Oct.

18 

18 

16 

18 

18

IS

17 

17 

17 

18

18 

18 

17 

18 

18

17 

17 

17 

17 

18

18 

18 

19 

19 

19

20 

IB 

18 

18 

IS 

18

Nor.

18 

18

Apr.

15 

15 

15 

15 

15

15 

15 

15 

15 

15

15 

15 

15 

16 

16

16 

16 

16 

15 

14

15 

16 

16

17 

17

18 

18 

19 

22 

26

Month.

Oc 

No 

De

Ja. 

Fe 

Ha 

Ap 

Ha 

Ju 

Ju 

Au 

3e

Oc 

No

sober 19

ouary 19 41

rfater year 1940-41 .....................

totter 19 

vomber 1-

41

 22... ..........................

May

22 

20 

22 

24 

24

24 

22 

24 

24 

24

28 

30 

31 

31 

33

39 

43 

47 

63 

67

70 

78 

82 

90 

104

113 

132 

158 

156 

156 

152

June

148 

148 

148 

146 

148

148 

152 

154 

156 

156

158 

15S 

148 

146 

156

167 

200 

216 

222 

218

216 

220 

220 

211 

205

203 

188 

171 

160 

150

Seeondfoot-daya

555

-

48S 

1,933 

6,237 

2,936 

1,481 

1,074

-

947 

601

July

148 

134 

130 

119 

108

101 

101 

101 

101 

102

102 

102 

101 

99 

99

97 

95 

85 

85 

85

85 

85 

83 

83 

80

77 

74 

74 

72 

67 

61

Maximum

20

.

26 

168 

222

148 

60 

41

-

32 

29

Aug.

60 

58 

55 

55 

52

52 

51 

50 

49 

48

49

60 

48 

48 

46

46 

44

46 

47

47

46 

46

46 

46 

44

43 

43 

42 

42 

41 

41

Sept,

41 

41 

39 

39 

38

38 

38 

38 

37 

36

36 

36 

35 

35

35

35 

35 

35 

35 

35

34 

34 

34 

34 

34

34 

34 

33 

33 

33

Minimum

17

-

14 

20 

146 

61 

41 

33

-

29 

26

Dot.

32 

32 

32 

32 

32

32 

31 

31 

31 

31

31 

31 

31 

30 

30

30 

30 

30 

30 

30

30 

30 

30 

30 

30

30 

30 

30 

30 

29 

29

Mean

17.9

-

16.3 

62.4 

175 

94.7 

47.8 

35. S

-

30.6 

27.3

NOT.

29 

28 

28 

28 

28

28 

28 

28 

28

27

27 

27 

27 

87 

27

27 

27 

27 

27 

26

26 

26

Run-off In 

acre-feet

1,100

-

968 

3,830 

10,390 

5,820 

2,940 

2,130

-

1,880 

1,190
36 SALT RIVER BASIN

Salt River near Smoot, Wyo.

Location.- Water-stage recorder, lat. 42°36', long. 110°55', in sec. 7, T. 30 N., R. 118 

W., it miles south of Smoot and 1$ miles upstream from Willow Creek.

Drainage area.- 59.4 square miles.

Records available.- June 1932 to September 1941.

Extremes.- Maximum discharge during year, 169 second-feet May 14 (gage height, 2.55 feet); 

minimum daily, 3.3 second-feet Jan. 10-16, 18-22, Feb. 2-7.

1932-41: Maximum discharge, 430 second-feet May 15, 1936 (gage height, 3.15 feet), 

from rating curve extended above 200 second-feet; minimum not determined, occurred 

during period of ice effect.

Remarks.- Records excellent except those for period of ice effect, which are fair. A 

~few diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

S.2 

6.9 

11 

8.6 

8.2

7.2 

6.9 

6.5 

6.5 

6.2

5.8 

6.2 

*5.8 

5.8 

5.8

5.8 

5.8 

5.5 

5.5 

5.5

5.5 

5.5 

5.5 

5.2 

5.2

5.2 

6.5 

6.2 

5.8 

5.8 

5.S

Nov.

5.2 

6.2 

6.2 

5.S 

6.2

5.8 

5.5 

5.5 

5.5 

5.5

5.5 

5.4 

5.3 

5.2 

5.2

5.4 

5.4 

5.4 

5.3 

5.2

5.2 

5.0 

4.9 

4.9 

4.9

4.9 

4.S 

4.6 

4.5 

4.4

Dec.

4.4 

4.6 

5.0 

5.1 

5.1

5.2 

5.2 

5.0 

4.8 

4.5

4.3 

4.0 

3.9 

3.9 

4.0

4.1 

4.3 

4.4 

4.5 

4.5

4.5 

4.3 

4.4 

4.5 

4.4

4.3 

4.2 

4.3 

4.2 

4.5 

4.4

Jan.

4.0 

3.9 

3.7 

3.6 

3.6

3.6 

3.6 

3.5 

3.4 

3.3

3.3 

3.3 

3.3 

3.3 

3.3

3.3 

3.4 

3.3 

3.3 

3.3

3.3 

*3.3 

3.4 

3.5 

3.6

3.6 

3.6 

3.7 

3.6 

3.5 

3.5

Feb.

3.4 

3.3 

3.3 

3.3 

3.3

3.3 

3.3 

3.4 

3.5 

3.6

4.0 

4.1 

4.1 

4.3 

4.4

4.6 

4.4 

4.6 

4.8 

«4.9

5.0 

5.2 

5.2 

5.2 

5.2

5.2 

5.2 

5.2

Month

Oct 

No\ 

Dec

C

Jar 

Fel 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

H

alendar year 19'to. .....................

11.....................................

ater year 1940-'n. .....................

Mar.

5.4 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.4

5.5 

5.6 

5.S 

6.0 

6.4

6.8 

7.2 

S.O 

8.2 

S.2

8.4 

9.0 

9.4 

10 

11 

12

Apr.

12 

13 

13 

13 

13

13 

12 

12 

12 

12

12 

12 

9.6 

9.6 

9.6

9.6 

9.6 

*9.6 

9.6 

9.6

10 

13 

17 

22 

29

35 

42 

69 

S9 

89

Seeondfoot-daya

195.9 

158. S 

13S.8

5,746.9

107.9 

119.3 

206.5 

640.8 

3,656 

2,619 

777 

497 

315.9

9,434.9

May

S7 

95 

103 

108

95

82 

75 

68 

75 

90

108 

137 

158 

165 

151

132 

125 

139 

128 

116

116 

123 

12S 

139 

139

139 

147 

140 

123 

115 

110

Maximum

11 

6.2 

5.2

101

4.0 

5.2 

12 

89 

165 

116 

3S 

22 

13

165

June

103 

102 

102 

103 

116

105 

102 

98 

111 

102

94 

94 

9S 

102 

106

102 

92 

95 

92 

89

S7 

S2 

73 

69 

62

54 

50 

46 

45 

43

July

3S 

34 

32 

31 

30

29 

29 

30 

29 

2S

29 

30 

29 

28 

26

24 

23 

22 

24 

25

22 

20 

19 

19 

20

20 

19 

17 

17 

17 

17

Minimum

5.2 

4.4 

3.9

3.6

3.3 

3.3 

5.4 

9.6 

68 

43 

17 

13 

7.7

3.3

Aug.

17 

16 

16 

15 

14

14 

14 

13 

17 

16

19 

19 

17 

16 

16

17 

22 

20 

18 

17

16 

16 

16 

16 

16

16 

15 

14 

13 

13 

13

Mean

6.32 

5.29 

4.48

15.7

3.48 

4.26 

6.73 

21.4 

US 

S7.3 

25.1 

16.0 

10.5

25.8

P.ept .

13 

12 

12 

13 

12

12 

13 

13 

12 

12

11 

11 

10 

10 

10

9.6 

9.6 

9.6 

9.6

9.1

9.1 

9.6 

9.6 

8.6 

8.6

8.6 

12 

10 

8.6 

7.7

Run-off in 

acre-feet

389 

315 

275

11,400

214 

237 

414 

1,270 

7,280 

5,190 

1,540 

986 

627

18,710

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by ice Nov. 10 to Apr. 7.
SALT RIVER BASIN 37

Salt River at Wyoming-Idaho State line

Location.- Water-stage recorder, lat. 43°10', long. 111°04', In sec. 16, T. 3 S., R. 46 

E., Just downstream from Trout Creek, half a mile upstream from mouth, and threequarters of a mile west of Wyoming-Idaho State line.

Drainage area.- 890 square miles.

Records available.- April 1934 to September 1941. 

miles upstream, records not equivalent.

July 1917 to September 1918 at site 4

Extremes.- Maximum discharge during year, 1,130 second-feet May 14 (gage height, 2.92 

reet); minimum daily, 295 second-feet Feb. 3.

1934-41: Maximum discharge, 3,520 second-feet May 6, 1936 (gage height, 4.64 feet); 

minimum, 216 second-feet May 17, 1934 (gage height, 1.30 feet).

Remarks.- Records good except those for period of ice effect, which are fair. 

above station for Irrigation.

Diversions

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

468 

474 

492 

504 

468

462 

450 

450 

474 

468

456 

450 

450 

444 

450

444 

43S 

444 

438 

432

438 

432 

432 

432 

43S

444 

4SO 

49S 

504 

516 

516

HOT.

510 

516 

540 

534 

522

510 

528 

534 

534 

52S

516 

504 

474 

462 

474

474 

486 

480 

474 

468

456 

450 

438 

410 

450

426

410 

426 

426 

432

Dec.

420 

462 

498 

486 

4S6

486 

474 

474 

474 

450

43S 

420 

385 

395 

400

410 

430 

456 

456 

438

438 

426 

43S 

438 

420

415 

432 

426 

432 

444 

420

Jan.

410 

350 

335 

340 

355

350 

346 

350 

346 

330

310 

300 

310 

310 

315

315 

312 

324 

324 

324

*324 

327 

327 

324 

321

321 

321 

31S 

306 

309 

320

Feb.

315 

300 

295 

300 

305

306 

303 

310 

330 

342

342 

342 

327 

324 

321

327 

321 

324 

*327 

327

327 

327 

327 

330 

334

330 

330 

330

Month

Get

Noi 

Dec

C

Jar 

Pel 

Kai

Apr 

Ma3 

Jur 

Ju3 

Aug 

Sei

D

alendar year 1940... ...................

ater year 1C40-4

liar.

330 

33S 

342 

350 

354

346 

342 

342 

342 

334

334 

334 

33S 

330 

334

334 

350 

370 

380 

400

426 

462

480 

4SO 

486

492 

534 

564 

600 

663 

733

Apr.

768 

866 

866 

810 

901

887 

761 

728 

742 

754

754 

748 

754 

7S7 

761

722 

702 

657 

650 

676

683 

683 

676 

683 

696

735 

774 

821 

870 

905

Secondfoot-days

14,236 

14,392 

13,667

167,823

10,174 

9,023 

12,844 

22,620 

27,913 

22,9SS 

20,664 

18,589 

17,684

205,044

May

919 

919 

956 

996 

988

956 

912 

905 

912 

919

956 

1,000 

1,060 

1,100 

1,090

996 

933 

698 

863 

814

768 

722 

696 

696 

702

754 

856 

940 

926 

S98 

S63

Maximum

516 

540 

496

7S2

410 

342 

733 

905 

1,100 

870 

74S 

670 

624

1,100

June

S49 

814 

780 

774 

SOO

800 

794 

SOO 

614 

856

835

eoo

807 

807 

849

S70 

849 

821 

774 

735

722 

690 

676 

664 

657

644 

638 

638 

683 

748

July

722 

742 

722 

716 

722

690 

696 

716 

702 

690

690 

702 

690 

670 

670

650 

618 

612 

618 

657

670 

664 

644 

631 

624

638 

638 

631 

612 

612 

605

Minimum

432 

410 

365

327

300 

295 

330 

650 

696 

638 

605 

539 

557

295

Aug.

575 

575 

563 

557 

557

551 

551 

539 

569 

575

605 

612 

605 

599 

593

593 

605 

650 

670 

650

644 

644 

631 

624 

618

631 

631 

605 

593 

581 

593

Mean

461 

480 

441

459

328 

322 

414 

761 

900 

766 

667 

600 

589

562

Sept.

612 

612 

616 

624 

612

605 

618 

612 

612 

599

587 

5,81 

581 

575 

575

575 

569 

575 

581 

563

557 

557 

563 

575 

599

. 587 

599 

593 

581 

587

Run-off In 

acre-feet

28,340 

28,550 

27,110

332,900

20,180 

17,900 

25,480 

45,260 

55,360 

45,600 

40,990 

36,870 

35,080

406,700

* Winter discharge measurement made on this day.

Note^- Stage-discharge relation affected by Ice Dec. 12-17, Jan. 2-6, 11-14, 31, Feb. 1-5, 8, 9.
38 SALT RIVER BASIN

Cottonwood Creek near Sinoot, Wyo.

Location.- Water-stage recorder, lat. 42°37', long. 110°53', In sec. 4, T. 30 N., R. 118 

w., it miles downstream from Porcupine Creek and li miles southeast of Smoot.

Drainage area.- 26.3 square miles (revised). 

Records available.- May 1933 to September 1941.

Extremes.- Maximum discharge during year, 174 second-feet May 26 (gage height, 2.07 

 reetj; minimum daily, 9.8 second-feet Mar. 12-15.

1933-41: Maximum discharge observed, 424 second-feet June 17, 18, 1933 (gage height, 

2.76 feet, datum then In use), from rating curve extended above 200 second-feet; 

. minimum dally, 8.5 second-feet Feb. 28 to mr. 2, 1935.

Remarks.- Records good except those for periods of ice effect, which are fair, 

diversion above station. Flow regulated by Cottowwood Lake.

One small

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z 

3

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oot.

23 

22 

23 

21 

20

20 

20 

20 

19 

IS

IS 

18 

IS 

18 

18

18

IS 

IS 

18 

IS

IS 

IS

IS 

IS 

IS

18 

19 

19 

IS

IS 

IS

HOT.

17 

17 

17 

15 

16

15 

15 

15 

15 

15

15 

16 

15 

15 

15

16 

15 

15 

15 

15

15 

15 

15 

15 

15

15 

15 

15 

15 

15

Dec.

16 

15 

15 

14 

15

15 

14 

14 

14 

15

16 

13 

13 

13 

12

12 

12 

13 

13 

14

14 

13 

13 

13 

13

13 

13 

13 

14 

13 

13

Jan.

12 

11 

11 

13 

13

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

*12 '12 

12 

12 

12

12 

12 

12 

12 

12 

12

Feb.

10 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

12 

12 

12 

12

11 

10 

10 

10 

*10

10 

10 

10 

10 

11

11 

11 

11

Month

Oot 

NOT 

Dec

C

Jai 

Pel 

Mai 

Apr 

Ifaj 

Jui 

Ju] 

AUJ 

8ei

1

alendar year 19'10. .....................

fater year 1940-4

liar.

10 

10 

10 

10 

10

10 

10 

10 

1011

10 

9.8 

9.8 

9.S 

9.S

10 

10 

10 

11 

11

11 

11 

11 

11 

11

11 

11 

11 

12 

12 

13

Apr.

14 

15 

14 

13 

14

14 

14 

14 

14 

14

14 

15 

15 

16 

16

16 

16 

16 

16 

16

16 

16 

18 

19 

21

22 

24 

28 

32 

36

Secondfoot -days

586 

456 

422

11,626

372 

303 

327.2 

526 

2,895 

3,906 

1,856 

1,097 

675

13,421.2

May

39 

44 

4S 

51 

50

47 

44 

, 42 

41 

46

53 

67 

S6 

IDS 

106

92 

92 

104 

104 

96

98 

108 

125 

144 

154

161 

169 

161 

146 

139 

130

Maximum

23 

17 

16

135

13 

12 

13 

36 

169 

154

as

57 

27

169

June

125 

125 

128 

132 

144

139 

139 

134 

137 

132

128 

12S 

132 

139 

146

151 

151 

154 

161 

146

145 

132 

103 

103 

111

125 

120 

114 

100 

92

July

S8 

85 

Si 

79 

77

75 

72 

67 

66 

67

67 

67 

66 

64 

60

66 

51 

61 

52 

52

52 

51 

52 

61 

51

51 

4S 

47 

40 

35 

35

Minimum

IS 

15 

12

11

11 

10 

9.S 

13 

39 

92 

35 

27 

19

9.S

Aug.

34 

33 

36 

40 

40

44 

41 

52 

57 

51

45 

40 

34 

33 

32

32 

32 

31 

31 

31

31 

31 

31 

31 

31

31 

30 

29 

28 

2S 

27

Mean

18.9 

15.2 

13.6

31. S

12.0 

10. S 

10.6 

17.5 

93.4 

130 

59.9 

35.4 

22.5

36.8

Sept.

27 

26 

27 

26 

26

26 

26 

25 

25 

24

24 

23 

23 

22 

22

22

22 

22 

22

21

21 

20 

20 

19 

19

19 

19 

19 

19 

19

Run-off in 

acre-feet

1,160 

904 

S37

23,050

738 

601 

649 

1,040 

5,740 

7,760 

3,680 

2,180 

1,340

26,620

* Winter discharge measurement made on this day.

17"; Note.- Stage-discharge relation affected by Ice Nov. 13, 23, 24, Dec. 14-25, Jan. 1-5, Feb. 1-10,
SALT RIVER BASIN 39 

Strawberry Creek near Bedford, Wyo.

Location.- Mater-stage recorder, lat. 42°57', long. 110°54', in sec. 27, T. 34 N., R. 118 

W., at mouth of canyon, li miles east of Bedford.

Drainage area.- 21.3 square miles.

Records available.- June 1932 to September 1941.

Extremes.- Maximum discharge during year, 238 second-feet May 27 (gage height, 3.22 feet); 

minimum daily, 26 second-feet Mar. 1-24.

1932-41: Maximum discharge observed, 675 second-feet June 25, 1932 (gage height, 

3.00 feet, site and datum then in use), from rating curve extended above 300 secondfeet; minimum not determined.

Remarks.- Records good except those for period of no gage-height record, which are fair. 

 - "ill diversion above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7

e

9 

10

11 

13 

13 

14 

15

16 

17 

18 

19 

80

81 

22 

33 

34 

85

36 

37 

28 

29 

30 

31

Oot.

46 

45 

45 

44 

43

44 

44

44 

46 

45

44

43 

43 

43 

43

43 

43 

41 

41 

41

41 

41 

41 

41 

41

41 

41 

43

41 

41 

41

NOT.

41 

41 

43 

43

41

41 

39 

39 

39 

39

38 

38 

38 

38 

38

3S 

36 

38 

38 

38

38 

38 

38 

38 

3S

38 

3S 

38 

38 

38

Dec.

37 

37 

36 

36 

36

35 

35 

35 

35 

34

34 

34 

34 

34 

34

33 

33 

33 

33 

32

33 

32 

31 

31 

30

30 

30 

30 

30 

30 

30

Jan.

30 

30 

30 

30 

30

30 

30 

30 

39 

29

39 

39 

28 

26 

28

38 

28 

38 

38 

37

37 

27 

38 

38 

38

38 

38 

27 

37 

37 

27

Feb.

37 

37 

37 

37 

37

27 

37 

37 

37 

38

28 

28 

28 

28 

28

28 

28 

28 

28 

28

28 

28 

28 

28 

28

28 

28 

27

Month

Ocl 

Not 

Dec

C

Jar 

Fet 

Mat 

Api 

Maj 

Jur 

Ju]

All£

Sei

H

alendar year 194 0 ......................

rater year 1940-4

Mar.

26 

26 

26 

26 

26

26 

26 

26 

26 

26

26 

26 

26 

26 

26

26 

26 

26 

26 

26

26 

26 

26 

26 

27

27 

27 

27 

28 

29 

29

Apr.

29 

29 

29 

28 

2S

28 

28 

28 

28 

28

27 

27 

27 

27 

32

34 

34 

33 

32 

32

33 

33 

34 

36 

37

38 

41 

42 

44

47

Secondfoot -days

1,321 

1,164 

1,024

19,824

881 

774 

818 

973 

3,779 

4,157 

2,355 

2,055 

1,703

21,004

May

50 

55 

60 

64 

67

65 

64 

60 

56 

54

59 

75 

100 

142 

127

120 

134 

148 

135 

137

133 

148 

175 

196 

308

310 

331 

210 

192 

173 

161

Maximum

46 

42

37

165

30 

28 

29 

47 

221 

186 

90 

78 

60

221

June

157 

159 

164 

16S 

1S6

178 

166 

162 

157 

143

135 

135 

148 

166 

168

160 

153 

150 

135 

135

133 

118 

115 

109 

103

98 

95 

95 

96 

93

July

90

se

85 

62 

81

81 

SI 

81 

83 

83

83 

81 

81 

SI 

7S

75 

74 

74 

78 

74

71 

68 

67 

67 

68

68 

68 

67 

67 

67 

66

Minimum

41 

38 

30

39

37 

37 

36 

37 

50 

93 

66 

60 

50

26

Aug.

72 

7S 

69 

66 

68

6S 

,68 

68 

71 

71

71 

68 

66 

64 

67

66 

66 

66 

66 

64

64

63 

64 

64 

64

54 

63 

62 

63 

61 

60

He an

42.6 

38. S 

33.0

54.2

28.4 

27,6 

26.4 

32.4 

122 

139 

76.0 

66.3 

56.8

57.5

Sept.

60 

58 

60 

58 

57

60 

60 

60 

60 

57

57 

57 

58 

58 

58

58 

58 

60 

60 

58

57 

56 

56 

55 

54

53 

51 

50 

50 

50

Run-off In 

acre-feet

2,620 

3,310 

3,030

39,320

1,750 

1,540 

1,620 

1,930 

7,500 

8,250 

4,670 

4,080 

3,380

41,680

Hote.- Ho gage-height record Jan. 4 to Feb. 13; discharge computed on basis of one discharge 

measurement, weather records, and records for nearby stations.
40 HENRYS FORK BASIN

Henrys Fork near Lake, Idaho

Location.- Water-stage recorder, lat. 44°36', long. 111°21', In SWi sec. 26, T. 15 N., 

R. 43 E., a quarter of a mile downstream from Henrys Lake Dam and 4 miles south of 

Lake post office.

Drainage area.- 104 square miles, Including that of Dry Creek Basin.

Records available.- September 1922 to September 1941. May 1920 to September 1922 at 

site 3 miles downstream and below mouth of Dry Creek, floodwaters of which have been 

diverted into Henrys Lake since 1923.

Extremes.- Maximum discharge during year, 225 second-feet July 8-14 (gage height, 2.32 

feet); minimum, 2 second-feet Oct. 1-15 (leakage through reservoir gates).

1920-41: Maximum discharge, 907 second-feet June 13, 1926 (gage height, 5.40 

feet); minimum, 0.1 second-foot Oct. 3-31, 1937.

Remarks.- Records good except those for periods of no gage-height record, which are 

fair. Flow regulated by gates at Henrys Lake (see p. 49 ), which remained closed 

Oct. 1 to June 19 and Sept. 27-30; flow during these periods was leakage through

Cooperation.- Gage-height record furnished by North Fork Reservoir Co.

Discharge, In second-feet, water year October 1940 to September 1941

Day

2

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

> a2

/

>

a3

/

Nov.

a4

Dec.

a4 

'

Jan.

t a4

Feb.

> a5

S

Month

Oct 

NOT 

Dec

C

Jam 

Feb 

Mar 

Apr 

May 

Jun 

Jul^ 

Aug 

Sep

W

ilendar year 1940 ...............

»ter year 1940-4][_

Mar.

a5

Apr.

a5

/

Secondfoot-days

7S 

120 

124

17,195

124 

140 

155 

150 

197 

353 

5,276 

3, £96 

596

10,609

May

. a6

s 

a7

Maximum

:

371

225 

211 

28

225

June

a8

, al8 

| a!9

July

a 19 

19 

a 19 

a!9 

a!9

a!9 

19 

96 

225 

225

225 

225 

225 

225 

224

224 

224 

224 

222 

222

222 

220 

217 

216 

216

214 

212 

211 

211 

209 

209

Minimum

:

2

19 

23 

4

-

Aug.

209 

209 

209 

208 

209

211 

211 

211 

211 

209

211 

211 

211 

142 

27

27 

26 

26 

26 

25

24 

24 

23 

24 

24

24 

24 

24 

25 

25 

26

Mean

2.5 

4.0 

4.0

47.0

4.0 

5.0 

5.0 

5.0 

6.4 

11.8 

170 

106 

19.9

29.1

Sept.

26 

26 

26 

26 

26

26 

27 

27 

27 

27

27 

27 

27 

28 

27

28 

28 

2S 

28 

28

17 

6 

5 

4 

4

a4 

a4 

a4 

a4 

a4

Run- off In 

acre-feet

155 

238 

246

34, 100

246 

278 

307 

298 

391 

700 

10,460 

6,540 

1,180

21,040

a Ho gage-height record; discharge computed on basis of discharge measurements and field estimates of flow made on NOT. 14, May S, June 3, 21, July 2, 7, Oct. 9, records of gate operation, 

and Interpolation.
HENRYS FORK BASIN 41

Island Park Reservoir near Island Park, Idaho

Location.- Electric tape gage, lat. 44°25', long. 111°24', in gate house shaft at dam on 

Henrys Fork, a quarter of a mile south of quarter corner between sees. 28 and 29, T. 

13 N., R. 43 E., a quarter of a mile upstream from Buffalo River, and 2 miles west of 

Island Park. Datum of gage is at mean sea level (levels by Bureau of Reclamation). 

Prior to Oct. 1, 1940, staff and mercury pressure gages at same site and datum.

Drainage area.- 478 square miles.

Records available.- November 1938 to September 1941.

Extremes.- Maximum contents observed during year, 133,830 acre-feet May 15, 16, 28 (elevation, 6,302.83 feet); minimum observed, 17,040 acre-feet Oct. 2, 3 (elevation, 6,274.36 

feet).

1938-40: Maximum contents observed, 136,905 acre-feet May 5, 6, 1939 (elevation, 

6,303.81 feet); minimum obeerve.d after first filling of reeervoir, 16,855 acre-feet 

Sept. 27, 1940 (elevation, 6,274.82 feet).

Remarks.- Reservoir is formed by earth fill rock-faced dam. Storage began Nov. 15, 1938. 

capacity, 187,865 acre-feet between elevations 6,239 feet (normal low-water level with 

outlet gates open) and 6,308 feet (crest of spillway) above mean sea level. Natural 

flow passing through reservoir when outlet gates are open prevents withdrawal of storage to elevation 6,230 feet (sill of lower outlet). Dead storage negligible. Gage 

read once daily at 8 a.m. Contents given herein are computed from elevations at that 

time; all available for release.

Cooperation.- Reservoir elevations and capacity table furnished by Bureau of Reclamation.

Contents, in acre-feet, water year October 1940 to September 1941

D«y

1 

2 

S 

4 

5

6

7

8

9

10

11

12

IS

14

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27

28

29 

SO

SI

Oct.

17,050

17,040 

17,040 

17,245 

17,300

17,310

17,300

17,285

17,270

17,246

17,220

17,180

17,205

17,205

17,220

17,236 

17,260 

17,260 

17,246 

17,236

17,236 

17,235 

17,236 

17,235 

17,220

17,220

17,220

17,310

17,360 

17,390

17,415

HOT.

17,416 

17,415 

17,440 

17,480 

17,630

17,625

17,675

17,766

17,835

17,860

17,660

17,836

17,780

17,765

17,740

18,376 

19,125 

19,900 

20,680 

21,435

22,185 

22,950 

23,686 

24,415 

26,140

25,840

26,580

27,340

28,150 

28,890

~

Dee.

29,590 

30,285 

30,976 

31,750 

32,470

33,155

33,765

34,480

36,130

36 ,795

36,450

37,066

37,646

36,270

36 ,910

39,535 

40,190 

40,830

41,515 

42,110

42,760 

43 ,435 

44,130 

44,905 

45,590

46,320

47,026

47,745

46,435 

49,065

49,810

Jan.

50,420 

51,035 

51,660 

52,325 

52,965

53,690

54,425

55,090

56 ,720

56,350

56,990

57,595

5S,210

56 ,630

59,495

60,170 

60,810 

61,456 

62,105 

62,760

63,425 

64,095 

64,770 

66,455 

66 ,145

66,990

67,595

68,255

68,670 

69,440

69,960

Feb.

70,640 

71 ,275 

71,910 

72,555 

73,160

73 ,750

74,356

76,020

75,630

76,246

77,030

77,770

76,516

79,096

79,730

80,370 

60,955 

81,545 

82,140 

62,735

83,330 

84,050 

84,720 

86,325 

86,990

86 ,605

87,225

87,845

~

-

Mar.

8S ,530 

69,215 

69,845 

90,475 

91,060

91,620

92,195

92,770

93,355

93 ,870

94,325

94,910

95,565-

96,025

96,566

97,146 

97,740 

98,340 

98,875 

99,410

100,286 

100,826 

101,505 

102,120 

102,595

103,145

103,695

104,250

104,736 

105,360

LOS ,265

Apr.

106,895 

107,526 

108,235 

108,945 

109,655

110,585

111 ,160

111,810

112,630

113 ,255

113,965

114,715

115,375

116,040

116,925

117,890 

116,935 

119,610 

120,290 

120,896

121,425 

122,030 

122,790 

123,705 

124,860

126,095

127,675

129,065

130,405 

131,616

May

132,310 

132,630 

132,630 

132,960 

133,030

133,030

132,710

132,790

133 ,030

133 ,030

133,030

133,030

133 ,350

133,110

133,830

133,830 

133 ,670 

133,510 

133,350 

133,030

133,030 

132,790 

132,960 

133,110 

133,030

133 ,030

133 ,750

133,830

133 ,590 

133 ,510

133,190

June

133 ,190 

132,870 

132,470 

132,550 

133,110

132,670

132,550

132,950

132,870

132,630

132,470

132,150

132,230

132,070

131,990

131,910

131,830 

131,515 

131,435 

131,356

131 ,435 

131,196 

131,036 

130,720 

130,170

128,596

127,110

125,710

124,395 

123,476

July

122,110 

121 ,730 

120,970 

120,515 

119,460

118,190

117,595

115,690

114,790

113 ,695

112,386

111,735

110,440

109,156

108,235

106,625 

106,220 

103,766 

'102,120 

100,490

98,810 

97,345 

95,895 

94,975 

94,130

93 ,415

92,130

91,940

91,050 

90,225

88,905

Aug.

S7,720 

85,990 

84,295 

82,496 

80,955

78,975

76,920

74,965

72,990

71 ,010

69,230

68,410

68,310

67,745

67,090

66,345 

65,945 

65,550 

66,505 

65,995

66,045 

65,995 

65,995 

65,355 

64,430

63,900

62,960

62,105

60,866 

59,405

58,740

Sept.

57,860 

57,076 

56,225 

55,425 

54,635

53,570

52,765

51,815

50,730

49,775

48,730

47,635

46,706

45,765

44,670

44,095 

43,370 

42,685 

42,076 

41,605

41,205 

40,435 

40,405 

40,160 

39,915

39,705

39,585

39,380

39,290 

39,230

Elevation and contents, mater year October 1940 to September 1941

Date

Dec. 31....................

Water year 1940-41

Elevation 

(feet)

6,286.74

-

Contents 

(acre-feet)

49,S10

-

Change in contents 

during month 

(acre-feet)

+20,920

+26,260

+22,180
42 HENRYS FORK BASIN

Henrys Fork near Island Park, Idaho

Location.- Water-stage recorder, lat. 44°25', long. 111°24', in SWi sec. 38, T. 13 N., 

R. 43 E., an eighth of a mile upstream from Buffalo River, an eighth of a mile downstream from Island Park Dam, and 2 miles west of Island Park. Altitude of gage, 

6,225 feet (from river profile map).

_Dralnage area.- 478 square miles.

Records available.- January 1933 to September 1941.

Extremes.- Maximum discharge during year, 1,550 second-feet Aug. 6 (gage height, 5.00 

feet); minimum, 3 second-feet Nov. 16 to Dec. 6 (gage height, 0.92 foot).

1933-41: Ifeximum discharge, 1,940 second-feet July 17, 1940 (gage height, 5.22 

feet); minimum, 1 second-foot Nov. 16 to Dec. 7, 1938.

Remarks.- Records good. Flow regulated by Island Park Reservoir (see p. 41 ), and 

Henrys Lake (see p. 49 ).

Cooperation.- Gage-height record and results of five discharge measurements furnished 

by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Bay

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

452 

452 

452 

452 

452

452 

452 

447 

447 

447

447 

434 

424 

424 

424

424 

424 

424 

424 

424

424 

424 

424 

424 

424

416 

416 

416 

416 

416 

416

Nov.

416 

416 

416 

416 

416

416 

416 

420 

420 

420

420 

420 

420 

416 

218

3 

3 

3 

3 

3

3 

3 

3 

3 

3

3 

3 

3 

3 

3

Dec.

3 

3 

3 

3 

3

3 

3 

3 

3 

4

4 

5 

5 

5 

5

5

5 

& 

5 

5

5 

5 

5 

5 

5

6 

6 

6 

6 

6 

6

Jan.

6 

6 

6 

6 

6

6 

6 

6 

6 

6

6 

6 

6 

6

7

7 

7 

7 

7 

7

7 

7 

7 

7 

7

7 

7 

7 

7 

7 

7

Feb.

7 

S 

S 

8 

8

e

8 

S

e 

e

e

8 

S

e

8

s

8 

8 

8

e 

s

8

8

e

9

9 

9 

9

Month

Dot 

Hoi 

Dec

C

Jar 

Pel 

Mai 

Api 

Ma3 

Jur 

Ju] 

Aug 

Sei

I

alendar year 194 0......................

fater year 1940-4

liar.

9 

9 

9

9 

9

9 

9 

9 

9 

9

9 

9 

9 

9 

9

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10 

10

Apr.

10 

10 

10 

11 

11

11 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

11 

11 

11 

11

12 

12 

12 

12 

12

14 

50 

L50 

263 

363

Secondfoot-days

13,394 

6,111 

141

196,059

203 

227 

295 

1,117 

16,697 

16, S63 

33,648 

31, 126 

22,914

145, 136

May

434

4SO 

503 

508 

526

503 

475 

498 

526 

526

526 

531 

559 

583 

630

620 

611 

564 

541 

526

522 

4S9 

496 

506 

498

541 

597 

611 

597 

673 

693

Maximum

452 

420 

6

1,900

7 

9 

10 

363 

693 

1,120 

1,460 

1,550 

972

1,550

June

639 

564 

536 

531 

574

574 

49S 

503 

SOS 

SOS

545 

574 

526 

508 

503

494 

4S4 

465 

480 

452

447 

465 

475 

630 

940

1,060 

1,120 

1,090 

l.OSO 

1,090

July

770 

635 

671 

612 

960

960 

960 

960 

996 

1,120

1,120 

1,130 

1,130 

1,120 

1,190

1,400 

1,400 

1,400 

1,460 

1,480

1,360 

1,320 

1,130 

9S4 

978

9S4 

964 

984 

990 

1,170 

1,270

Mini mum

416 

3

3

3

6 

7 

9 

10 

434 

447 

635 

407 

424

3

Aug.

1,310 

1,410 

1,400 

1,390 

1,500

1,550 

1,540 

1,540 

1,540 

1,530

1,310 

87S 

883 

883 

644

668 

592 

536 

407 

420

461 

465 

656 

S56 

S44

888 

9S4 

1,010 

1,010 

949 

872

Mean

432 

204 

4.6

536

6.6 

8.1 

9.5 

37.2 

545 

629 

1,092 

1,004 

764

398

Sept.

S72 

S61

see

905 

938

972 

9B6 

966 

960 

960

960 

93S 

894 

S94 

S66

622 

800 

722 

703 

6S9

664 

644. 

635 

602 

550

506 

480 

465 

438 

424

Run-off in 

acre-feet

26,570 

12, 120 

280

383,900

403 

450 

585 

2,220 

33,510 

37,410 

67,140 

61,740 

45,460

287,900

Hote.- Discharge con
HENRYS FORK BASIN 48 

Henrys Fork at Warm River, Idaho

Location.- Water-stage recorder, lat. 44°07', long. 111°20', in sec. 12, T. 9 N., R. 43

 E., 1,000 feet upstream from Warm River and half a mile northwest of Warm River railroad station. Altitude of gage, 5,255 feet (from river-profile map).

Drainage area.- 660 square miles.

Records available.- September 1910 to March 1915, April 1918 to September 1941.

Extremes.- Maximum discharge during year, 1,860 second-feet Aug. 6-8 (gage height, 5.77

 feet); mininum, 228 second-feet Dec. 11 (gage height, 3.19 feet).

1910-15, 1918-41: Maximum discharge, 3,540 second-feet May 18, 1927 (gage height, 

7.55 feet); minimum, 218 second-feet Jap. 19, 1940 (gage height, 3.17 feet).

Remarks.- Records good except those for periods of doubtful or no gage-height record, 

which are fair. Flow regulated by Henrys Lake (see p. 49) and Island Park Reservoir 

(see p. 41 ). Some water diverted above station for irrigation of meadows on headwaters.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

*16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

90 

31

Oct.

876 

883 

8S3 

883 

870

850 

850 

S43 

843 

843

843 

843 

624 

817 

617

S17 

817 

817 

817 

805

79S 

805 

805 

79S 

805

Sll 

S56 

S43 

S37 

884 

S17

NOT.

817 

824 

824 

617 

811

624 

SSO 

830 

830 

817

817 

SOS 

741 

843 

870

539 

394 

435 

353

353

439 

373 

349 

369

394

394 

386 

390 

403 

386

Dec.

399

407 

412 

403 

378

382 

412 

37S 

353 

317

302 

321 

302 

310 

333

341 

390 

430 

444 

a444

a444 

a440 

a425 

a405 

390

3S6 

394 

361 

333 

a380 

a370

Jan.

aS50 

a 560 

345 

349 

407

403 

373 

365 

369 

361

353 

345 

349 

369 

382

373 

365 

365 

369 

373

37S 

369 

369 

a366 

aS64

361 

382 

345 

357 

353 

341

Feb.

341 

d341 

d345 

d350 

d360

d365 

d370 

d375 

d3SO 

d385

a390 

a370 

a360 

a370 

aSSO

3S2 

378 

361 

373 

a375

a37S 

a380 

382 

386 

369

341 

341 

37S

Month

Oct 

No-v 

Dec

C

Jar 

Fel 

Kai 

Apt 

Maj 

Jur 

Ju3 

Auj 

Sei

I

alendar year 194 0......................

 11 .

rater year 1940-4

Mar.

373 

382 

a37S 

a374 

a370

aS66 

aS62 

357 

353 

329

317 

329 

329

341 

361

365 

357 

357 

361 

37S

369 

365 

365 

349 

357

357 

365 

369 

373 

390 

382

Apr.

390 

407 

430 

439 

467

453 

425 

421 

430 

444

448 

448 

481 

467 

481

520 

462 

430 

416 

416

416 

430 

472 

520 

596

601 

628 

656 

741 

850

Secondfoot -day a

25, 840 

18.257 

11,786

348, 431

11,300 

10,306 

11,180 

14, 7S5 

31,254 

29,255 

43, 762 

42,675 

33, 492

283, S92

May

944 

1,010 

1,040 

1,060 

1,040

1,030 

965 

1,010 

1,080 

1,060

1,020 

1,010 

1,030 

1,080 

1,120

1,080 

1,060 

1,040 

993 

951

924 

910 

876 

876 

890

965 

1,040 

1,060 

1,030 

1,000 

1,070

Maximum

883 

870 

444

^ 2, 180

407 

390 

390 

850 

1,120 

1,410 

1,760 

1,860 

1,290

1,860

June

1,050 

986 

917 

924 

986

979 

938 

890 

890 

863

876 

924 

931 

856 

870

856 

837 

817 

850 

856

792 

779 

Sll 

817 

1,070

1,340 

1,350 

1,390 

1,410 

1,400

July

1,320 

993 

979 

1,060 

1,190

1,250 

1,260 

1,270 

1,270 

1,360

1,420 

1,440 

1,430 

1,440 

1,450

1,640 

1,660 

1,680 

1,700 

1,760

1,740 

1,640 

1,570 

1,410 

1,380

1,370 

1,360 

1,370 

1,370 

1,390 

1,600

Minimum

798 

349 

302

302

341 

341 

317 

390 

876 

779 

979 

870 

817

302

Aug.

1,610 

1,700 

1,730 

1,730 

1,760

1,860 

1,860 

1,860 

1,830 

1,830

1,830 

1,380 

1,290 

1,270 

1,250

1,170 

1,010 

1,010 

903 

870

870 

876 

876 

1,180 

1,220

1,250 

1,320 

1,360 

1,360 

1,360 

1,250

Mean

834 

609 

380

952

365 

368 

361 

493 

1,008 

975 

1,412 

1,377 

1,116

778

Sept.

1,280 

1,810 

1V 200 

1,220 

1,240

1,280 

1,290 

1,290 

1,290 

1,270

1,270 

1,270 

1,220 

1,210 

1,220

1,160 

1,160 

1,110 

1,080 

1,030

1,020 

1,010 

1,010 

993 

944

897 

a877 

a857 

837 

817

Run-off In 

aere-feet

51,260 

36,210 

23,380

691,100

22,410 

20,440 

22,180 

29,390 

61,990 

58,090 

86,800 

84,640 

66,430

563, 100

a No gage-height record; discharge computed on basis of records for stations at Island Park and 

Ashton and weather records.

b Doubtful gage-height record; discharge computed on basis of records for stations at Island Park 

and Ashton and weather records.

481877 O - 42 - 4
44 HENRYS FORK BASIN 

Henrys Fork near Ashton, Idaho

Location.- Water-stage recorder, lat. 44°05', long. 111°30', In sec. 28, T. 9 N., R. 42

 E., a quarter of a mile downstream from power plant and 3 miles west of Ashton. Altitude of gage, 5,095 feet (from river profile map).

Drainage area.- 1,030 square miles.

Records available.- August 1902 to June 1909, April 1920 to September 1941.

Extremes (regulated).- Maximum discharge during year, 2,380 second-feet July 20 (gage

 height, 6.99 feet); maximum gage height, 7.04 feet Aug. 11, 12; minimum discharge, 

174 second-feet Dec. 28 (gage height, 5.00 feet); minimum dally discharge, 494 secondfeet Dec. 11, 12.

1902-9, 1920-41: Maximum discharge, 6,220 second-feet May 7, 1925; minimum, 65 

second-feet Oct. 16, 1935 (gage height, 4.59 feet); minimum dally, 440 second-feet 

Dec. 5, 1931.

Remarks.- Records excellent. Flow regulated at power plant above station and by Henrys

 Lake (see p. 49 ) and Island Park Reservoir (see p. 41 ). Some water diverted above 

station for Irrigation of meadows on headwaters.

Cooperation.- Gage-height record during nonlrrlgatlon season furnished by Utah Power and 

Light uo.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

V

e

9 

10

11

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oot.

1,220 

1,170 

1,250 

1,220 

8S4

1,240 

1,050 

1,100 

1,130 

1,140

1,100 

1,090 

1,100 

1,100 

1,070

1,060 

1,100 

1,070 

1,090 

1,070

1,070 

1,020 

1,060 

966 

976

988 

1,160 

1,140 

1,080 

1,270 

1,090

Nov.

1,100 

1,110 

1,160 

1,100 

1,070

1,060 

1,060 

1,130 

1,090 

1,170

1,070 

914 

908 

1,160 

1,100

863 

510 

752 

580 

580

627 

616 

580 

570 

665

636 

704 

598 

707 

608

Dec.

636 

731 

632 

649 

656

635 

642 

659 

647 

602

494 

494 

510 

519 

536

580 

646 

741 

698 

658

666 

651 

630 

666 

671

649 

722 

599 

627 

621 

653

Jan.

544 

580 

519 

644 

692

718 

671 

645 

654 

616

618 

639 

551 

673 

644

628 

640 

638 

638 

673

629 

598 

636 

636 

646

636 

665 

618 

618 

618 

608

Feb.

598 

598 

618 

636 

598

646 

656 

627 

656 

676

676 

696 

618 

618 

627

636 

646 

646 

646 

656

665 

656 

665 

686 

676

646 

598 

686

Month

Oot 

No\ 

Dec

C

Jar 

Fet 

Mai 

Api 

Maj 

Jur 

Jul 

Aug 

Sej

H

alendar year 194 0..... .................

ater year 1940-4

Mar.

686 

686 

676 

676 

676

646 

646 

646 

656 

646

627 

627 

636 

636 

656

696 

665 

665 

707 

749

738 

738 

796 

803 

880

853 

S70 

739 

952 

938 

900

Apr.

878 

876 

84V 

916 

904

858 

814 

847 

858 

858

880 

836 

904 

904 

904

952 

952 

847 

803 

792

761 

792 

636 

952 

1,040

1,170 

1,190 

1,190 

1,330 

1,480

Seoondfoot-days

34,074 

25, 800 

19,520

478,947

19,533 

18,052 

22,511 

28,191 

49,420 

42,620 

55,140 

51, 500 

42, 510

408, 871

May

1,630 

1.720 

1,730 

1>790 

1,700

1,700 

1,560 

1,650 

1,750 

1,700

1,660 

1,650 

1,660 

1,730 

1,810

1,720 

1,610 

1,600 

1,530 

1,580

1,170 

1,330 

1,320 

1,330 

1,330

1,450 

1,680 

1,700 

1,550 

1,500 

1,580

Maximum

1,270 

1,170 

731

2,590

718 

696 

952 

1,480 

1,810 

1,880 

2,280 

2,280 

1,700

2,280

June

1,550 

1,470 

1,330 

1,380 

1,440

1,520 

1,450 

1,420 

1,400 

1,320

1,330 

1,340 

1,420 

1,280 

1,230

1,300 

1,260 

1,240 

1,230 

1,260

1,200 

1,330 

1,280 

1,200 

1,230

1,750 

1,840 

1,860 

1,880 

1,880

July

1,880 

1,360 

1,340 

1,420 

1,560

1,720 

1,650 

1,650 

1,660 

1,750

1,840 

1,840 

1,830 

1,810 

1,810

2,040 

2,040 

2,120 

2,120 

2,260

2,180 

2,000 

1,940 

1,750 

1,650

1,630 

1,630 

1,580 

1,580 

1,580 

1,900

Minimum

884 

510 

494

494

519 

598 

627 

781 

1,170 

1,200 

1,340 

1,050 

1,040

494

Aug.

1,880 

2,020 

2,060 

2,060 

2,020

2,220 

2,220 

2,200 

2,220 

2,260

2,280 

1,660 

1,610 

1,440 

1,450

1,400 

1,200 

1,200 

1,170 

1,050

1,080 

1,030 

1,090 

1,440 

1,440

1,530 

1,580 

1,680 

1,660 

1,720 

1,580

He an

1,099 

860 

630

1,309

630 

645 

726 

940 

1,594 

1,421 

1,779 

1,661 

1,417

1,120

Sept.

1,500 

1,530 

1,480 

1,520 

1,580

1,600 

1,700 

1,660 

1,630 

1,610

1,610 

1,550 

1,580 

1,520 

1,550

1,520 

1,420 

1,380 

1,360 

1,300

1,320 

1,260 

1,340 

1,210 

1,260

1,120 

1,160 

1,100 

1,100 

1,040

Run-off in 

acre-feet

67,580 

51,170 

38,720

950,000

36,740 

35,810 

44,650 

55,920 

98,020 

84, 540 

109, 400 

102,100 

84,320

811,000
HENRYS FORK BASIN 45 

Diversions from Henrys Fork between Ashton and St. Anthony gaging station, Idaho

Between Ashton and St. Anthony gaging stations, seven canals divert water from Henrys 

Fork for irrigation. Records available each irrigation season from 1919 to 1941. Records 

of discharge of canals are combined to show total diverted flow. During July, August, 

and September, records computed from daily staff-gage readings and are good. During Miy 

and June, records computed or interpolated from daily or biweekly staff-gage readings and 

are fair.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

IS 

19 

80

21 

22 

23 

24 

26

86 

87 

28 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Oct

Not 

Dec

C

Jan 

Pet 

Mar 

Apr

JUE 

Jul 

Aug 

Se[

alendar year

TISt....................................

The per:

liar. Apr.

Secondfoot-days

34,973 

27.821 

30,383 

86,106 

18,793

-

May

360 

896 

910 

918 

988

959 

962 

996 

1,060 

1,060

1,100 

1,130 

1,250 

1,890 

1,270

1,850 

1,260 

1,880 

1,860 

1,860

1,220 

1,290 

1,310 

1,310 

1,280

1,210 

1,100 

1,110 

1,090 

1,070 

1,080

Maximum

1,310 

1,180 

1,160 

1,130 

653

-

June

1,060 

1,030 

1,090 

1,120 

1,090

1,080 

984 

913 

309 

301

760 

939 

998 

1,010 

1,020

1,030 

936 

958 

778 

777

806 

316 

335 

830 

379

781 

836 

953 

937 

982

July

882 

314 

920

QgJ5

984

1,010 

1,020 

1,010 

1,020 

973

993 

1,010 

1,010 

1,010 

1,080

1,050 

1,130 

1,130 

1,140 

1,160

1,030 

937 

947 

949 

330

345 

845 

336 

355 

897 

1,090

Minimum

850 

760 

314 

607 

388

~

Aug.

1,090 

1,070 

1,090 

1,090 

1,100

1,140 

1,140 

1,180 

1,080 

1,060

841 

738 

786 

300 

787

756 

748 

735 

735 

739

741 

703 

695 

720 

740

729 

617 

632 

682 

607 

607

Mean

1,188 

987 

978 

842 

426

-

Sept.

604 

608 

658 

647 

648

648 

650 

555 

535 

393

373 

563 

361 

348 

345

342 

340 

332 

363 

344

334 

388 

388 

341 

338

340 

334

331 

531 

331

Run-off In 

acre-feet

69,380 

55,130 

60,140 

51,730 

25,370

261,300
46 HENRYS FORK BASIN

Henrys Fork at St. Anthony, Idaho

Location.- Water-stage recorder, lat. 43°58', long. 111 041', in sec. 1, T. 7 N., R. 

 40 E., half a mile upstream from bridge on main street of St. Anthony. Altitude of 

gage, 4,950 feet (from river-profile map).

Drainage area.- 1,730 square miles.

Records available.- March 1919 to September 1941 (irrigation seasons only).

Extremes.- Maximum discharge recorded during year, 3,480 second-feet May 28 (gage height, 

4.77 feet); minimum recorded, 473 second-feet June 24, 25 (gage height, 2.87 feet). 

1919-41: Maximum discharge recorded, 9,030 second-feet May 8, 1925 (gage height, 

6.70 feet); minimum daily recorded, 413 second-feet July 22, 1931 (gage height, 2.78 

feet).

Remarks.- Records excellent. Diversions above station for irrigation. Flow regulated

by power plant 17 miles upstream and by storage in Henrys Lake (see p. 49), Island

Park Reservoir (see p. 41 ), and Grassy Lake (see p. 49 ).

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

18 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

80 

81

Oct. NOT. Dec. Jan. Feb.

Month

Dot 

No'1 

Dec

C

Jar 

Pet 

Moi 

API 

Maj 

Jur 

JuJ 

Auj 

Sei

1

alendar year

lie per it

Mar. Apr.

Secondroot-days

65,690 

34,323 

27,752 

32,849 

37,250

-

May

2,580 

2,650 

2,770 

2,800 

2,470

2,290 

1,940 

2,000 

2,560 

2,320

2,170 

2,170 

2,340 

2,650 

2.S70

2,170 

1,750 

1,620 

1,630 

1,330

1,070 

1,160 

1.22C 

1,43C 

1,520

1,770 

2,S2C 

3, ESC 

2,32C 

1.94C 

1,88C

Maximum

3,280 

2,000 

1,190 

1,480 

1,490

-

June

1,840 

1,430 

1,190 

1,260 

1,490

2,000 

1,S40 

1,960 

1,820 

1,540

1,290 

1,160 

1,160 

983 

930

962 

S46 

712 

634 

712

667 

676 

634 

505 

532

1,040 

1,130 

1,120 

1,080 

1,130 

-

July

1,110 

780 

659 

676 

702

S16 

7S6 

780 

780 

767

886 

S06 

S06 

S46 

S56

940 

1,020 

994 

9S3 

1,060

1,190 

1,180 

1,080 

972 

962

951 

951 

908 

887 

856 

962

Minimum

1,070 

505 

659 

650 

1,050

-

Aug.

972 

1,080 

1,130 

1,240 

1,200

1,220 

1,180 

1,140 

1,190 

1,210

1,480 

1,830 

1,210 

1,140 

1,100

1,040 

S46 

776 

S06 

676

650 

659 

667 

886 

951

1,080 

1,120 

1,260 

1,250 

1,280 

1,24O

Mean

2,119 

1,144 

895 

1,060 

1,242

Sept.

1,150 

1,150 

1,060 

1,110 

1,160

1,140 

1,220 

1,360 

1,420 

1,490

1,480 

1,360 

1,400 

1,810 

1,810

1,440 

1,360 

1,840 

1,260 

1,210

1,190 

1,150 

1,250 

1,200 

1,210

1,150 

1,120 

1,120 

1,110 

1,050

Run-off in 

acre-feet

130,300 

68,080 

55,060 

65,160 

73,880

392,500
HENRYS FORK BASIN 47 

Diversions from Henrys Fork between St. Anthony and Rexburg gaging stations, Idaho

Between St. Anthony and Rexburg gaging stations, four canals divert water from Henrys 

Fork for irrigation. Records available for part of each Irrigation season from 1919 to 

1941. Records of discharge of canals are combined to show total diverted flow. During 

July, August, and September records computed from dally Btaff-gage readings and are good. 

During May and June records computed or Interpolated from bi-weekly staff-gage readings 

and are fair.

Dlacharge, In aecond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7

e

9 

10

11

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Oet 

Not 

Dec

C

Jar 

Fet 

Mar 

Apr 

Ma3 

Jur 

JuJ 

Aug 

Sei

3

aleadar year

"he perlt

liar. Apr.

Secondfoot-days

30,735 

23,733 

19,549 

1B,051 

11,350

-

May

713 

719 

724 

770 

791

S30 

S70 

907 

975 

1,010

1,010 

1,040 

1,080 

1,110 

1,120

1,140 

1,120 

1,150 

1,110 

1,100

1,010 

1,070 

1,140 

1,210 

1,180

1,070 

990 

956 

926 

942 

954

Maximum

1,210 

1,030 

72B 

759 

593

-

June

933 

941 

990 

1,030 

922

S75 

806 

586 

617 

700

777 

796 

884 

904

see

826 

770 

717 

566 

779

768 

747 

757 

683 

503

9S3 

947 

778 

677 

583

July

569 

564 

585 

609 

694

665 

67S 

662 

663

657

689 

700 

692 

663 

651

581 

658 

694 

686 

661

626 

594 

545 

544 

485

515 

543 

576 

626 

656 

728

Minimum

713 

503 

485 

48B 

252

-

Aug.

753

759 

736 

724 

677

708 

703 

706 

669 

577

574 

491 

491 

488 

513

541 

539 

505 

567 

532

507 

533 

576 

533

514

518 

526 

525 

539 

512 

516

Mean

991 

791 

631 

582 

37S

-

Sept.

554

551 

569 

593

573

4S7 

438 

418 

421

41S

409 

402 

426 

393 

393

349

337 

315 

307 

300

306 

300 

270 

295 

266

252 

252 

263 

252 

252

Run-off in 

ao re-feet

60, 960 

47,070 

38,770 

35,SOO 

22,510

205,100
48 HENRYS FORK BASIN

Henrys Fork near Rexburg, Idaho

Location.- Water-stage recorder, lat. 43°50', long. 1H°54', In sec. 30, T. 6 N., R. 

39 E., Just downstream from highway bridge, downstream from all tributaries, and 7 

miles west of Rexburg. Altitude of gage, 4,807 feet (from river-profile map).

Drainage area.- 3,010 square miles.

Records available.- April 1909 to September 1941.

Extremes.- Maximum discharge during year, 3,540 second-feet May 29 (gage height, 6.56 

feet): 1909-41: minimum, 700 second-feet " Aug. 2, 3 (gage -..----- . height, 2.84 feet). 

Maximum discharge, 9,490 second-feet June 29, 1927 (gage height, 9.90 

feet); minimum, 183 second-feet March 24-28, 1934 (gage height, 1.45 feet).

Remarks.- Records good except those for periods of Ice effect, which are fair. Flow 

regulated by operation of power plant at Ashton and by Henrys Lake (see p. 49 ), 

Island Park Reservoir (see p. 41 ), and Grassy Lake (see p. 49 ). Many diversions 

above station for Irrigation. No diversions from Henrys Fork below station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

1,760 

1,740 

1,680 

1,670 

1,660

1,5SO 

1,520 

1,470 

1,460 

1,460

1,440 

1,420 

1,390 

1,3SO 

1,380

1,370 

1,380 

1,410 

1,3SO 

1,410

1,430 

1,400 

1,370 

1,330 

1,300

1,270 

1,320 

1,560 

1,580 

1,670 

1,730

Nov.

1,630 

1,600 

1,580 

1,580 

1,560

1,540 

1,550 

1,560 

1,660 

1,670

1,640 

f 1,580 

1,400 

1,410 

1,690

1,710 

1,540 

1,290 

1,3SO 

1,230

1,220 

1,250 

1,170 

1,110 

1,190

1,2SO 

1,240 

1,2SO 

1,240 

1,290

Dec.

1,240 

1,280 

1,310 

1,260 

1,260

1,230 

1,200 

1,200 

1,20C 

1,170

1,080 

962 

846 

967 

1,080

1,170 

1,220 

1,320 

1,360 

1,370

1,370 

1,370 

1,340 

1,360 

1,430

 1,450 

1,420 

1,440 

1,370 

1,340 

1,350

Jan.

1,350 

1,190 

1,090 

1,060 

1,210

1,310 

1,290 

1,290 

1,260 

1,260

1,250 

1,250 

1,220 

1,240 

1,270

1,250 

1,240 

1,240 

1,370 

1,270

1,320 

1,240 

1,260 

1,260 

1,270

1,270 

1,220 

1,120 

1,120 

1,130 

1,110

Feb.

1,100 

1,120 

1,130 

1,150 

1,160

1,140 

1,170 

 1,200 

1,190 

1,240

1,280 

1,290 

1,230 

1,170 

1,140

1,170 

1,170 

1,170 

1,190 

1,200

1,220 

 1,200 

1,220 

1,260 

1,310

1,280 

1,220 

1,180

Month

Oct 

Nou

Dec

C

Jar 

Fet 

Mai 

Api 

Maj 

Jur 

Jul 

Aug 

Se]

VI

alendar year 194 0......................

ater year 1940-4

Mar.

1,220 

1,420 

1,640 

1,520 

1,380

1,340 

1,290 

1,280 

1,260 

1,250

1,160 

1,100 

1,090 

1,100 

1,090

1,130 

1,18O 

1,320 

1,610 

1,910

2,000 

1,740 

1,790 

1,820 

1,760

1.S20 

1,860 

2,040 

1,950 

2,170 

2,120

Apr.

1,950 

1,790 

1,750 

1,750 

1,680

1,660 

1,520 

1,370 

1,290 

1,260

1,230 

1,200 

1,200 

1,250 

1,150

1,170 

1,290 

1,180 

 1,020 

1,010

1,020 

989 

962 

989 

1,030

1,160 

1,270 

1,410 

1,490 

1,740

Secondfoot -days

45,920 

43,070 

38,965

577, 664

38,170 

33,500 

47,400 

39,7SO 

62,235 

45,837 

29,094 

33,773 

40,890

493,684

May

2,000 

2,340 

2,500 

2,650 

2,730

2,500 

2,300 

1,S90 

2,000 

2,260

2,030 

2,010 

2,070 

2,300 

2,650

2,610 

1,960 

1,460 

1,620 

1,370

1,160 

8S4 

S40 

901 

1,050

1,240 

1,790 

2,900 

3,300 

2,690 

2,280

Maximum

1,760 

1,710 

1,450

4,260

1,350 

1,310 

2,170 

1,950 

3,300 

2,700 

1,350 

1,620 

1,520

3,300

June

2,150 

1,980 

1,520 

1,190 

1,280

1,760 

2, ISO 

2,510 

2,700 

2,550

2,170 

1,760 

1,540 

1,300 

1,200

1,320 

1,390 

1,350 

1,330 

1,310

1,2SO 

1,1SO 

1,130 

1,080 

1,020

967 

1,090 

1,090 

1,170 

1,320

July

1,350 

1,260 

978 

S96 

923

923 

945 

950 

S96 

S46

796 

791 

750 

735 

796

745 

775 

791 

S24 

912

1,090 

1,230 

1,180 

1,110 

1,100

1,090 

1,040 

967 

S74 

791 

740

Minimum

1,270 

1,110 

646

650

1,060 

1,100 

1,090 

962 

S40 

967 

735 

715 

1,040

715

Aug.

750 

716 

7SO 

879 

967

940 

962 

906 

912 

976

1,150 

1,620 

1,430 

1,550 

1,430

1,350 

1,220 

1,080 

1,040 

1,020

940 

906 

884 

674 

1,020

1,090 

1,160 

1,260 

1,320 

1,320 

1,320

Mean

1,481 

1,436 

1,257

1,578

1,231 

1,196 

1,529 

1,326 

2,009 

1,523 

939 

1,089 

1,363

1,366

Sept.

1,250 

1,160 

1,110 

1,040 

1,100

1,120 

1,160 

1,310 

1,420 

1,490

1,520 

1,460 

1,430 

1,410 

1,3SO

1,430 

1,510 

1,460 

1,400 

1,380

1,340 

1,360 

1,390 

1,510 

1,500

1,520 

1,430 

1,460 

1,440 

1,400

Run-off In 

acre-feet

91,080 

35,430 

77,290

1,146,000

75,710 

66,450 

94.020 

78,900 

123,500 

90,920 

57,710 

66,990 

SI, 100

969,100

* Winter discharge measurement made on this day.

Mote.- Stage-discharge relation affected by Ice Dec. 18-28, Jan. 3-25, Feb. 2-12.
HENRYS FORK BASIN 49

Smaller reservoirs In Henrys Fork Basin

Henrys Lake.- Staff gage, lat. 44°36', long. 11Q°21', at dam on Henrys Fork in SWi 

sec. 36, T. 15 N., R. 43 E., 4 miles south of Lake Idaho post office. Datum of gage 

Is 6,457.16 feet above mean sea level (levels by Bureau of Reclamation). Drainage 

area, 104 square miles, including that of Dry Creek. Records available, June 1923 

to September 1941 (fragmentary). Maximum contents observed during year, 53,886 aorefeet June 20, 21, 30 (gage height, 10.84 feet)s minimum, 36,800 acre-feet Oct. 1 

(interpolated). Maximum contents observed during period 1923-41, 75,192 acre-feet 

July 8-10, 1928 (gage height. 14.34 feet); minimum observed, 140 acre-feet Nov. 8, 

1934 (gage height, 0.03 foot).

Reservoir is formed on natural lake by concrete damj storage began Sept. 21, 1922; 

dam completed July 1923. Capacity, 79,351 acre-feet between gage heights 0.0 foot 

(normal low-water level of Henrys Lake prior to construction of dam) and 15.0 feet 

(top of 5-foot flashboards in spillway). Flood waters of Dry'Creek are diverted into 

Henrys Lake. Water used for irrigation near St. Anthony. Gage read once daily 

usually about 9 a.m. during period of storage withdrawal and only occasionally during 

remainder of year. Records given herein represent usable contents. Gage-height 

record and capacity table furnished by North Fork Reservoir Co.

Grassy Lake.- Mercury pressure gage, lat. 44008', long. 110°49', in gate house at dam on 

Grassy Creek, approximately in sec. 7, T. 48 N., R. 116 w. (unsurveyed), half a mile 

upstream from mouth and 24 miles northwest of Moran,'Wyo. Datum of gage is mean sea 

level (levels by Bureau of Reclamation). Drainage area, 12 square miles, including 

basin of Cascade Creek, waters from which are diverted into Grassy Lake. Records 

available, October 1939 to September 1941 (.fragmentary). Maximum contents observed 

during year, 13,145 acre-feet June 20 (elevation 7,203.30 feet); no contents Oct. 2-5. 

Maximum contents observed during period 1939-41, that of June 20, 1941; no contents 

Oct. 2-5, 1940.

Reservoir Is formed by earth-fill, rock faced dam; storage began Oct. 18, 1939. 

Capacity, 15,182 acre-feet between elevations 7,135.0 feet (sill of trash rack) and 

7,210.0 feet (crest of spillway) above mean sea level. Water is used for irrigation 

of lands in Fremont-Madlson irrigation district, Idaho. Gage read once daily about 

7 a.m. during irrigation season and occasionally during remainder of year. Records 

given herein represent usable contents. Gage-height record and capacity table furnished by Bureau of Reclamation.

Monthly elevations or gage heights and contents, water year October 1940 to September 1941

Date

Dec. SI.............

Calendar year 1940

Mater year 1940-41

Henrys Lake

Q age 

height 

(feet)

[

-

10.02

10.84 

9.02

-

Contents 

(acre-feet)

aS6,SOO 

41,500

-

49,087 

a51,100 

55,886 

43,353 

a38,400 

a38,900

-

Change In 

contents 

during 

month 

(acre-feet)

~-

-

+8,013 

+2,7S6 

-10,533 

-4,953 

+500

+2,100

Qrassy Lake

Elevation 

(feet)

7,141.50 

7,140.80

7,149.90

-

7,153.15 

7,155.60 

7,157.95 

7,160.50 

7,135.65 

7,196.15 

7,135.50 

7,162.15 

7,134.65

-

Contents 

(ao re-feet)

519 

456 

a979 

1,445

-

1,333 

2,241 

2,607 

3,029 

3,367 

11,104 

3,329 

7,519 

3,167

-

Change In 

contents 

during 

month 

(acre-feet

-63 

+523 

+466

+620

+438 

+358 

+366

+5,338

+2,737 

-2,775 

-810

+7,643

a Interpolated.
50 HENRYS FORK BASIN

Diversions from Fall River above gaging station near Squirrel, Idaho

Above Squirrel gaging station three canals divert water from Fall River for Irrigation. Records available for part of each Irrigation season from 1919 to 1941. Records 

of discharge of canals computed from dally readings of staff gages and combined to show 

total diverted flow. Records good except those (taring period May 1 to June 17, which 

are fair.

Discharge, In second-feet, water yew October 1940 to September 1941

Day

1 

K 

3

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

S3 

24 

25

26 

27 

26 

29 

30 

31

Oct. HOT. Dec. Jan. Feb.

Month

Oet 

Hoi

Dec

C

Jai

Fet 

Mar 

Apr 

Baj

Jur 

Jul AUS 

sei

1

alendar year

lUt....... ........ .....................

"he pertc>*

Mar. Apr.

Secondfoot-days

390 

5,692 

5,005 

2,214 

1,031

-

Bay

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

1011

18

28 

32

36 

41 

55 

47 

58 

58

Maximum

58

183 

185 

US 

47

-

June

68 

62 

66 

79 

SO

87 

87 

87 

87 

S4

90 

93 

108 

117 

122

129 

134 

147 

149 

154

159 

156 

154 

154 

154

174 

174 

1S1 

1S3 

174

July

178 

177 

177 

177 

177

182 

184 

183 

1S1

185

183 

179 

185 

180 

179

174 

172 

172 

169 

166

150 

158 

131 

126 

129

184 

184 

124 

127 

127 

126

Minimum

0 

62 

124 

44 

25

-

Aug.

118 

117 

110 

108 

107

110 

105 

103

106 

106

90

S2 

73 

62 

61

44 

44 

45 

48 

46

44 

44 

47 

51 

49

52 

61 

51

52 

52 

48

Bean

12.5 

123 

161 

71.4 

34.4

-

Sept.

47 

40 

40 

40 

41

40 

44 

43 

41 

44

35 

34 

34 

35 

40

34 

26 

26 

26 

26

30 

29 

29 

30 

31

SO 

30 

SO 

30 

30

Run-off In 

acre-feet

774 

7,320 

9,930 

4,390 

2,040

24,460
HENRYS FORK BASIN 51

Fall River near Squirrel, Idaho

Location.- Staff gage, lat. 44°04', long. 111°15', In sec. 34, T. 9 N., R. 44 E., 4 miles 

northeast of Squirrel and 10 miles upstream from Conant Creek.

Drainage area.- 380 square miles.

Records available.- January 1904 to June 1909, May 1918 to September 1941. August 1902 

to December 1903, at Wilson's sawmill, 3 miles upstream.

Average discharge.- 28 years (1904-8, 1917-41), 738 second-feet (unadjusted).

Extremes.- Maximum discharge observed during year, 2,490 second-feet May 28 (gage height, 

2.94 feet); minimum observed, 266 second-feet Mar. 14 (gage height, 1.00 foot).

1904-9, 1918-41: Maximum discharge observed, 6,440 second-feet June 27, 1927; minimum observed, 72 second-feet Feb. 9, 1930.

Remarks.- Records good except those for periods of ice effect, which are fair. Flow 

since October 1939 regulated by Grassy Lake (see p. 49 ).

.soharge, In second-feet, water year October 1840 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29

30 

31

Oct.

475 

430 

445 

417 

404

391 

384 

37S 

372 

365

359 

359 

359 

353

353

347 

347 

347 

347 

347

347 

347 

347 

347 

341

341 

341 

347 

391 

398 

410

Nov.

3S4 

384 

391 

391 

384

3S4 

384 

39S 

39S 

378

365 

341 

317 

329 

341

347 

3S4 

378 

372 

372

372 

372 

353 

353 

353

353 

341 

365 

353 

353

Dec.

359 

365 

365 

372 

372

372 

372 

359 

359 

»347

329 

305 

305 

311 

311

317 

323 

329 

335 

359

359

353 

353 

391 

353

378 

365 

391 

353 

365 

365

Jan.

341 

305 

300 

300 

305

347 

347 

353 

»358 

353

347 

347 

335 

347 

347

341 

341 

353 

353 

353

353 

353 

353 

353 

353

359 

359 

359 

*359 

359 

347

Feb.

341 

335 

335 

335 

329

329 

329 

329 

341 

347

353 

353 

335 

335 

323

«329 

323 

323 

323 

323

335 

335 

359 

335 

335

323 

323 

323

Month

Oot 

NOT 

Dec

C

Jar 

Pel 

Max 

Api 

Maj 

Jur 

Ju3

AU£

Sei 

H

alendar year 19'to. .....................

fater year 1940-*

Mar.

325 

341 

347 

335 

335

335

323 

323 

323 

317

311 

323 

323 

266 

300

323 

323 

347 

347 

347

347 

347 

369 

359 

369

359

384 

3S4 

398 

438 

410

Apr.

458

463 

4S2 

493 

513

452 

424 

410 

438 

452

482 

513 

561 

561 

561

577 

545 

513 

49S 

498

493 

513 

529 

628 

662

751 

871 

1,100 

1,150 

1,250

Secondfoot-days

11,536 

10,990 

10,892

264,523

10,630 

9,338 

10,656 

17,350 

53 ,850 

32,161 

13,101 

12,186 

12,241

205 ,4S7

May

1,570 

1,540 

1,570 

1,600 

1,570

1,430 

1,220 

1,400 

1,510 

1,620

1,680 

1,320 

1,880 

2,430 

2,100

1,750 

1,610 

1,S40 

1,550 

1,310

1,470 

1,610 

1,750 

1,960 

2,020

2,050 

2,400 

2,490 

1,900 

1,670 

1,530

Maximum

475 

39S 

391

3,950

359 

359

438 

1,250 

2,490 

1,670 

653 

490 

468

2,490

June

1,440 

1,420 

1,390 

1,500 

1,720

1,370 

1,610 

1,640 

1,370 

1,140

1,140 

1,160 

1,110 

1,080 

1,130

948 

904 

926 

820 

715

S30 

770 

733 

715 

742

706 

697 

577 

679 

679

July

653 

5S5

513 

496 

475

460 

445 

438 

391 

334

359

424 

430 

424 

417

410 

404 

398 

3S4 

430

398 

391 

404 

417 

424

391 

372 

353 

347 

341 

341

Minimum

341 

317 

305

300

300 

323 

266 

410 

1,220 

577 

341 

347 

373

266

Aug.

353 

347 

365 

359 

347

347 

353 

417 

404 

430

482 

430 

490 

39S 

384

384 

384 

384 

468 

424

398 

391 

373 

372 

365

391 

384 

384 

391 

391 

391

Mean

372 

366 

351

723

345

334 

344 

595 

1,737 

1,072 

423 

393 

408

563

Sept.

384 

364 

364 

384 

384

391 

445 

430 

404 

446

424 

391 

334 

37S 

378

468 

452 

430 

424 

410

404 

398 

417 

417 

430

417 

404 

398 

391 

391

Run- off In 

acre-feet

22,880 

21,300 

21,600

524,700

21 ,180 

18,520 

21,140 

35,400 

106,800 

63 ,790 

25,990 

24,170 

24,280

407,600

* Winter discharge measurement made on this day. 

Note.- Stage discharge relation affected by Ice Nov. 

an. 1-28, 31, Feb. 1-12.

11-15, IS, 21-30, Dec. 1-3, 11, 13-31,
52 HENRYS FORK BASIN

Diversions from Fall River between Squirrel and Chester gaging stations, Idaho

Between Squirrel and Chester gaging stations, nine canals divert water from Fall 

River for irrigation. Recorde available tor part of each irrigation season from 1919 

to 1941. Records of discharge of canals combined to show total diverted flow. During 

July, August, and September, recorder computed from daily statf-gage readings and are 

good. During May and June, records computed or interpolated from bi-weekly statf-gage 

readings and are tair.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Get 

Non

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Juti 

Jul 

Aug 

Set

t

alendar 'year

Phe peri

liar. Apr.

Secondfoot-days

13 ,906 

19,493 

13,257 

9,726 

7,712

-

May

20 

60 

98 

20 

140

167 

169 

191 

201 

280

297 

437 

453 

476 

511

566 

561 

589 

596 

66S

70S 

730 

768 

784 

783

786 

780 

502 

536 

505 

522

Maximum

786 

764 

625 

450 

347

-

June

536

572 

703 

727 

764

730 

662 

 549 

485 

492

580 

617 

665 

682 

694

712 

734 

713 

562 

563

694 

696 

696 

732 

719

656 

654 

635 

636 

629

July

625 

558 

547 

541 

49S

430 

426 

431 

412 

396

399

477 

455 

434 

445

445 

431 

416 

417 

416

402 

382 

381 

376 

365

361 

364 

363 

363 

364 

365

Minimum

20 

485 

361 

103 

159

-

Aug.

377 

376 

371 

248 

221

363 

365 

374 

447 

460

377 

372 

106 

108 

220

261 

327 

327 

324 

317

316 

313 

307 

314 

304

321 

332 

339 

298 

295 

260

Mean

449 

650 

428 

314 

257

-

Sept.

267 

281 

286 

286 

281

281 

276 

224 

223 

347

334 

335

322 

317 

243

256 

253 

242 

241 

241

239 

239 

226 

219 

219

219 

219 

219 

219 

159

Run- off In 

acre-feet

27*580 

3S ,660 

26,290 

19,290 

16,300

127 ,100
HENRYS FORK BASIN 53

Fall River near Chester, Idaho

Location.- Water-stage recorder, lat. 44°01', long. 111°34', In sec. 13, T. 8 N., R. 41 

E., half a mile upstream from mouth and 2 miles north of Chester. Altitude of gage, 

5,060 feet (from river profile map).

Drainage area.- 560 square miles.

Records available.- April 1920 to September 1941 (Irrigation seasons only).

Extremes.- Maximum discharge during period May to September, 2,550 second-feet May 28 

(gage height, 4.28 feet); minimum, 21 second-feet July 12 (gage height, 0.99 foot). 

1920-41: Maximum discharge, 6,380 second-feet June 27, 1927 (gage height, 6.60 

feet); minimum, 9 second-feet Aug. 7, 1923; minimum gage height, that of July 12, 

1941. '

Remarks.- Records excellent. Flow since October 1939 regulated by Orassy Lake (see p.49). 

station Is below all diversions for Irrigation from Fall River.

Discharge, In second-feet, water Tear October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14

15

16 

17 

18 

19 

20

21 

22 

23

24 

25

26 

27 

28 

29 

30 

31

Oct. NOT. Dec. Jan. Feb.

Month

Oct 

Not 

Dec

C

Jan 

Fet 

Hai 

Apr 

Maj 

JUT 

Jul 

Aug 

Sep

alendar year

& peri

Mar. Apr.

Secondfoot -days

43,910 

18,456 

2,109 

4,942 

6,056

-

May

1,760 

1,SOO 

1,900 

1,S70 

1,700

1,560 

1,260 

1,390 

1,710 

1,540

1,510 

1,620 

1,790 

2,120 

2,100

1,540 

1,310 

1,540 

1,340 

1,060

990 

1,070 

1,240 

1,390 

1,460

1,490 

2,060 

2,340 

1,710 

1,440 

1,300

Maximum

2,340 

1.420 

139 

366 

271

-

June

1,240 

960 

852 

951 

1,190

1,420 

1,240 

1,270 

1,140 

990

764 

670 

708 

65E 

670

640 

503 

3S2 

302 

259

271 

199 

167 

121 

1S9

164 

100 

167 

131 

141

July

100 

91 

81 

52 

40

a48 

a56 

65

48 

37

27 

22 

32

44 

48

48 

50 

45 

57 

89

139 

S9 

S9 

106 

128

113 

95 

S7 

68 

60 

55

Minimum

990 

100 

22 

29 

126

-

Aug.

55 

47 

73 

173 

170

102 

43 

42 

29 

37

131 

199 

366 

33S 

243

212 

179 

167 

212 

212

1S6 

179 

164 

15S 

158

161 

153 

173 

192 

192 

199

Mean

1.57S 

615 

6S,0 

159 

202

-

Sept.

192 

186 

186 

192 

195

173 

202 

271 

255 

212

150 

134 

128 

126 

139

225 

232 

212 

215 

205

199 

1S9 

212 

232 

243

236 

229 

225 

229 

232

Run-off In 

acre-feet

97^010 

36,610 

4,180 

9,300 

12,010

159,600

a No gage-height reoord; discharge Interpolated.
54 HENRYS FORK BASIN

Teton River near Tetonla, Idaho

Location.- Water-stage recorder, lat. 43°51', long. 111°15', In sec. 15, T. 6 N., R. 44

 E., 14 miles downstream from highway bridge and 6 miles northwest of Tetonla.

Drainage area.- 460 square miles.

Records available.- October 1929, March 1930 to September 1932, May to September 1934, 

juiy to septemoer 1935, May to September 1940, July to September 1941. Additional 

records collected by water district 36, State of Idaho: October and November 1932, 

July to September 1936, July to September 1937.

Extremes.- Maximum discharge observed during period June to September, 1,020 second-feet

 June 25 (gage height, 1.96 feet); minimum, 314 second-feet Sept. 30 (gage height, 

0.94 foot).

1929-41: Maximum discharge observed, 1,500 second-feet June 27, 1932 (gage height, 

2.48 feet); minimum observed, 100 second-feet Sept, 21, 1934 (gage height, 0.47 foot).

Remarks.- Records excellent. Flow reduced by diversions from tributaries above station 

for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

8 

3 

4 

5

6 

7 

8 

9 

10

11 

IS 

13 

14 

15

16 

17 

IS 

19 

20

21 

82 

23 

84 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Dot 

Not 

Dec

C

Jar 

Pel 

Mai 

API

S3Ju3 

Aug 

Sej

alendar year

V. ......

Ihe peri

Mar. Apr.

Secondfoot-days

*

15,116 

13 ,169 

10,935

J

May

»

Maximum

686 

629 

402

-

June

T 1,020

769 

761 

708

July

657 

629 

629 

686 

650

615 

586 

636 

595 

528

510 

503 

472 

443 

437

431 

425 

402 

392 

437

431 

397 

3S6 

398 

414

485 

437 

419 

392 

380 

380

Minimum

3SO 

344 

314

-

Aug.

3SO 

398 

376 

359 

354

349 

344 

344 

354 

4O2

402 

478 

629 

536 

443

414 

431 

484 

491 

503

497 

460 

446 

451 

425

414 

419 

419 

414 

402 

397

Mean

4S6 

425 

364

-

Sept.

397 

386 

3S6 

3S6 

375

370 

380 

402 

397 

398

370 

354 

344 

334 

344

354 

949 

364 

402 

359

359 

349 

370 

897 

370

349 

359

324 

319 

314

Run-off In 

acre-feet

29,990 

26,160 

21,690

77,840

t Result of discharge measurement.
HENRYS FORK BASIN 55

Teton River near St. Anthony, Idaho

Location.- Water-stage recorder, lat. 43°56', long. 111°37', in sec. 15, T. 7 N., R. 41 

^E., naif a mile upstream from railroad bridge and 4 miles southeast of St. Anthony.

Drainage area.- 920 square miles.

Records available.- April 1903 to June 1909, April 1920 to September 1941.

Average discharge.- 10 years (1907-8, 1921-22, 1933-41), 698 second-feet.

Extremes.- Maximum discharge during year, 2,390 second-feet May 28 (gage height, 4.94 

feet); minimum, 262 second-feet Jan. 28 (gage height, 1.77 feet).

1903-9, 1930-41: Maximum discharge, 7,820 second-feet June 5, 1909 (gage height, 

6.90 feet, site and datum then in use); minimum, 88 second-feet Mar. 12, 1906 (gage 

height, 1.00 foot, site and datum then in use).

Remarks.- Records excellent except those for periods of ice effect, which are fair. 

Flow affected by diversions from streams in Teton Basin, 20 miles upstream, and by 

flow diverted from Henrys Fork through Cross Cut canal into Teton River (3,710 acrefeet diverted into river during 1941).

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16

17ie

19 

20

21 

22 

23 

24

25

26 

27 

28 

29 

SO 

31

Oct.

640

583 

548 

553 

S38

504 

489 

475 

471 

457

452

448 

443 

443 

443

439 

443 

443 

439 

434

430 

425 

421 

425 

425

425 

484 

573 

568 

523 

533

Nov.

514

489 

480 

475 

461

448 

461 

4S9 

504 

4SO

443 

399 

421 

421 

457

439 

421 

434 

403 

391

412 

391 

378 

395 

430

386 

366 

391 

391 

504

Dec.

471 

412 

391 

391 

391

391 

382 

378 

»378 

357

345 

330 

325 

320 

320

325 

330 

330 

350 

400

400 

395 

390 

390 

385

360 

374 

345 

336 

376 

365

Jan.

341 

349 

316 

316 

340

*395 

350 

350 

350 

348

335 

325 

315 

340 

340

330 

340 

349 

336 

341

345 

345 

349 

349 

349

349 

341 

304 

310 

325 

325

Feb.

330 

330 

330 

330 

330

330 

330 

335 

332 

345

349 

357 

336 

32S 

324

332 

332 

328 

326 

332

336 

345 

353 

357 

357

336 

320 

345

Month

Oct 

No\ 

Dec

C

Jar 

Pet 

Mai 

Api 

Ha, 

Jut 

Jul 

Aug 

Set

H

alendar year 194 0... ...................

11. ............. ..... ......... ...

(atep year 1940-4

Mar.

399 

*533 

494 

439 

421

412 

399 

395 

395 

382

353 

332 

324 

324 

336

361 

466 

903 

1,030 

1,020

76S 

822 

846 

768 

S10

929 

1,070 

1,080 

1,140 

1,040 

840

Apr.

744 

678 

689 

630 

588

645 

588 

514 

475 

461

443 

439 

439 

471 

466

457 

471 

457 

457 

475

466 

439 

430 

430 

443

457 

480 

51S 

563 

635

Secondfoot-days

14,932 

13,094 

11,455

231,967

10,497 

9,417 

19,831 

15,448 

44,003 

46,220 

26,173 

£2,243 

17,914

251,237

May

694 

7BO 

877 

943 

949

923 

670 

852 

1,150 

1,200

1,310 

1,640 

2,000 

2,120 

1,960

1,560 

1,330 

1,710 

1,520 

1,210

1,150 

1,300 

1,520 

1,640 

1,640

1,800 

2,260 

2,260 

1,810 

1,570 

1,460

Maximum

640 

514 

471

1,960

395 

357 

1,140 

744 

2,260 

2,050 

1,130

ess

640

2,260

June

1,430 

1,270 

1,200 

1,270 

1,460

1,560 

1,440 

1,470 

1,410 

1,360

1,270 

1,270 

1,320 

1,540 

1,750

1,340 

1,990 

2,050 

2,010 

1,840

1,730 

1,770 

1,780 

1,300 

1,710

1,510 

1,370 

1,300 

1,300 

1,200

July

1,130 

1,070 

1,070 

1,130 

1,100

1,060 

1,020 

1,050 

1,030 

943

670 

853 

834 

793 

774

756 

762 

762 

763 

816

792 

700 

672 

672 

669

700 

700 

694 

662 

640 

656

Minimum

421 

373 

320

-

304 

320 

324 

430 

694 

1,200 

640 

635 

558

304

Aug.

716 

711 

705 

683 

694

739 

763 

792 

793 

883

322

733 

333 

822 

716

662 

673 

694 

705 

733

733 

705 

633 

672 

651

640 

635 

656 

651 

645 

635

Mean

482

436 

370

634

339 

336 

640 

515 

1,420 

1,541 

644 

718 

597

683

Sept.

614 

593 

598 

598 

693

588 

598 

635 

624 

614

604 

588 

578 

573 

563

583 

578 

578 

640 

624

604 

593 

598 

624 

630

604 

538 

573 

568 

553

Run-off In 

acre-feet

29,620 

25,970 

22,720

460,100

20,820 

18,680 

39,330 

30,640 

87,290 

91,680 

51,920 

44,120 

35,530

498,300

* Winter discharge measurement made on this day.

Kote.- Stage-discharge relation affected by Ice Dec. 11-26, Jan. 4-17, Jan. 29 to Feb. 8.
56 HENRYS FORK BASIN

Diversions from Teton River between St. Anthony gaging station and mouth, Idaho

Between St. Anthony gaging station and mouth, 17 canals divert water from Teton 

River for Irrigation. Records available for part of each Irrigation season from 1919 

to 1941. Records of discharge of canals combined to show total diverted flow. During July, August and September, records computed from dally staff-gage readings and 

are good. During May and June, records computed or Interpolated from dally or biweekly readings and are fair.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Hov. Dec. Tan. Feb.

Month

Oct 

No\ 

Dec

C

Jar 

Pet 

Mai 

Apr 

Maj 

Jur jua

Aug 

Sej

f

alendar year

[he peri

Mar.

»

Apr.

Secondfoot-days

25,180 

33,963 

24,456 

18,782 

14,194

-

May

231 

231 

241 

33S 

346

365 

369 

371 

317 

346

397 

466 

569 

78S 

995

1,000 

1,020 

1,080 

1,100 

1,140

1,180 

1,220 

1,250 

1,340 

1,33O

1,290 

1,200 

1,210 

1,160 

1,140 

1,150

Maximum

1,340 

1,250 

1,000 

846 

550

-

June

1,110 

1.110 

1,070 

1,100 

1,130

1,100 

969 

985 

971 

962

954 

922 

1,040 

1,180 

1,210

1,220

1,220 

1,240 

1,240 

1,250

1,250 

1,250 

1,250 

1,250 

1,240

1,210 

1,200 

1,160 

1,090 

1,080

July

1,000 

959 

851 

920 

864

818 

796 

799 

821 

863

874 

876 

847 

724 

801

790 

774 

803 

761 

845

849 

762 

684 

680 

681

681 

669 

697 

656 

670 

641

Minimum

231 

922 

641 

494 

297

-

Aug.

733 

688 

697 

661 

664

675 

70S 

758 

776 

S46

738 

605 

623 

605 

569

545 

528 

531 

543 

566

565 

573 

558 

511 

508

494 

501 

508 

497 

502 

506

Mean

812 

1,132 

789 

606 

473

-

Sept.

511 

510 

495 

501 

505

549 

540 

550 

541 

549

547 

526 

521 

500 

512

520 

510 

496 

497 

521

520 

521 Iso

428 

394

307

297" 

297 

297

Run-off In 

acre-feet

49,940 

67,360 

48,510 

37,250 

28,150

231,200
BLACKFOOT RIVER BASIN 57

Blackfoot River near Blackfoot, Idaho

Location.- Water-stage recorder, lat. 43°08', long. 112 028', at east quarter corner of 

secTTJS, T. 3 S., R. 34 E., about 2 miles upstream from mouth and 9 miles southwest 

of Blackfoot. Altitude of gage, 4,420 feet (river profile survey).

Drainage area.- 1,100 square miles.

Records available.- July 1913 to September 1941.

Extremes.- Maximum discharge during year, 331 second-feet Nov. 21 (gage height, 4.20 

feet;; no flow on several days.

1913-41: Maximum discharge, 868 second-feet May 21, 1921; no flow on many days.

Remarks.- Records good except those for period of ice effect, which are poor, and those 

tor periods of no gage-height record, which are fair. Flow regulated by Blackfoot 

Marsh Reservoir (capacity, 413,000 acre-feet). Many diversions above station for 

Irrigation. Most of the flow during the nonlrrlgatlon season and part of that 

during the Irrigation season Is supplied by waste from Snake River canals.

Cooperation.- Gage-height record furnished by Office of Indian Affairs.

Discharge, In second-feet, water year October 1840 to September 1841

Day

1 

2 

3 

4 

5

6 

7 

S 

8 

10

11 

12 

13 

14 

15

16 

17 

IS 

18 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

236 

233 

239 

237 

224

201 

228 

228 

226 

200

176 

173 

170 

174 

168

172 

165 

121 

70 

86

' 87 

80 

86 

124 

126

135 

182 

188 

216 

239 

207

Nov.

176 

137 

142 

111 

48

52

74 

77 

122 

168

156 

161 

219 

297 

282

237 

180 

236 

228 

251

312 

287 

282

\ l>250

Dec.

 

> t>200

. 

>

 t)150 

/

Jan.

N

> 1)150

i

Feb.

S

, b!50 

/

Month

Dot 

Not 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj

JU»

Jul 

Aug 

Sei

n

alendar year

ater year 1940-4]

liar.

> also

t!84 

\ -a!84

I a!90

192 

a!93

al94 

al85 

al96 

197 

210 

221

Apr.

233 

202 

185 

240 

261

280 

303 

267 

215 

189

189 

213 

210 

221 

210

180 

191 

201 

174 

144

117 

96 

66 

39 

41

54 

60 

90 

151 

168

Secondfoot-days

5,418 

5,9S5 

5,150

-

4,650 

4,200 

5,846 

5,200 

1,874 

1,754 

135 

1,215 

1,515

43,042

May

165 

156 

151 

155 

168

178 

174 

144 

62 

27

21 

34 

24 

14 

9

7 

4 

3 

19 

34

14 

3 

0 

0 

0

13 

14 

22 

42 

115 

202

Maximum

239 

312

-

303 

202 

245 

25 

220 

168

312

June

245 

242 

190 

115 

64

51 

57 

98 

98 

167

219 

76 

24 

5 

0

0 

1

1 

9 

12

17 

15 

13

4 

1

1

1 

1 

14 

13

July

15

11 

10 

6

1

1 

1 

1 

4 

2

1

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

3 

11 

25

19 

7 

S

2 

2

1

Minimum

70 

48

-

39 

0 

0

1 

1 

0

0

Aug.

1 

1 

2 

17 

6

5 

5 

8 

5 

6

5 

197 

152 

34 

58

220 

160 

139 

124

41

6 

4 

4 

a2 

a2

aS 

aS

a2 

a2 

2 

1

Mean

175 

200 

166

-

150 

150 

1S9 

173 

63.7 

58.5 

4.4 

39.2 

50.5

118

Sept.

1 

0 

0 

0 

0

1

1

4 

12

14

13 

11 

8 

31 

57

32 

57 

35 

36 

41

43

s126

132

151 

168 

150 

147 

103

Run-off In 

acre-feet

10,750 

11,870 

10,210

-

9,220 

8,330 

11,600 

10,310 

3,920 

3,480 

268 

2,410 

3,000

85,370

t Result of discharge measurement. 

a Fragmentary gage-height record} discharge computed on basis of partial record, weather records, 

and discharge measurements.

b Stage-discharge relation affected by Ice.
58 MUD LAKE BASIN

Mud Lake near Terreton, Idaho

Location.- Water-stage recorder, lat. 43°53', long. 112°24', In SWi sec. 1, T. 6 N., R. 

34 £., 2 miles north of first Owsley pump house, 2i miles northeast of Terreton, and 

14 miles southwest of Hamer; supplemental staff gage at pump house. Datum of each 

gage Is 4,775.33 feet above mean sea level.

Records available.- April 1921 to September 1941.

Extremes.- Maximum dally contents during year, 30,900 acre-feet Apr. 30, May 1 (gage 

height, 6.60 feet); minimum dally, 1,470 acre-feet Oct. 1 (gage height, -1.23 feet).

1921-41: Maximum contents observed, 61,660 acre-feet May 5, 1923 (gage height, 9.20 

feet); practically no storage Oct. 1 to Nov. 15, 1937 (at 4 p.m. Nov. 15 water was 

diverted from Camas Creek Into lake).

Remarks.- Mud Lake Is a perched body of water confined by earth dikes and fed by ground 

water and surface tributaries. For complete description of Mud Lake region see WaterSupply Paper 818. Water for Irrigation Is diverted from lake and tributaries by 

pumping and gravity. Camas Creek diversion canal reported In operation Oct. 1 to Nov. 

1 and July 17 to Sept. 30. Area of lake Is varied from time to time by changes In 

dikes. High winds occasionally disturb the recording of lake stages. Figures given 

herein represent contents above gage height, -4.0 feet. Capacity table prepared from 

surveys made by Geological Survey adjusted for changes In dikes.

Cooperation.- Water-stage recorder record furnished by watermaster for Mud Lake and staffgage record by Owsley Canal Co.

Contents, In acre-feet, water year October 1940 to September 1941

D«T

i

e

s

4

S

6

7

8

9

10

11

12

13

14

15

16

17

18

19

SO

21

28

23

84

85

26

87

28

29

SO

31

Oct.

1,470

1,540

1,550

1,720

1,820

1,900

1,930

2,080

B,150

2,220

2,270

2,300

2,430

2,460

2,510

2,590

2,640

2,720

2,770

2,820

2,820

2,910

2,870

2,920

2,930

3,110

3,060

3,160

3,280

3,360

3,370

HOT.

5,610

3,590

3,840

3,930

4,030

4,170

4,250

4,360

4,430

4,600

4,750

4,900

5,010

5,120

5,230

5,340

5,480

5,650

5,780

5,900

6,050

6,150

6,280

6,410

6,540

6,670

6,770

6,910

7,070

7,210

Dec.

7,330

7,440

7,590

7,710

7,830

7,980

8,110

8,230

8,390

8,560

8,750

3,920

3,930

9,080

9,290

9,460

9,650

9,800

9,910

10,100

10,200

10,300

10,600

10,300

11,000

11,100

11,300

11,500

11,700

11,300

12,000

Jan.

11,900

12,000

12,100

12,300

12,600

12,900

13,100

13,200

13,400

13,500

13,700

13,300

14,000

14,200

14,200

14,500

14,600

14,800

15,000

15,100

15,300

15,400

15,500

15,600

15,700

16,000

16,000

16,100

16,300

16,400

16,600

Feb.

16,600

16,300

17,000

17, 100

17,200

17,400

17,500

17,600

17,700

17,800

18,000

18,100

18,300

IS, 500

13,600

18,600

18,300

18,900

19,000

a!9,200

19,400

a!9,600

19,800

19,900

20,000

20,100

20,300

&>, 400

_

_

-

Mar.

a20,600

20,800

20,900

21,500

a21,400

21,400

21,500

21,700

21,900

21,900

22,000

22,200

22,400

22,400

22,500

22,600

22,900

a22,900

22,900

23,100

23,300

23,400

a23,600

23,700

23,700

23,800

23,900

24,100

a24,100

24,100

a24,200

Apr.

24,400

24,600

a24,700

a24,SOO

24,900

25,800

26,000

26,2OO

26,400

26,700

27,000

27,500

27,300

27,800

27,900

28,300

23,800

29,000

29,100

29,300

29,400

89,600

29,800

29,900

30,100

30,300

30,400

30,700

50,300

30,900

-

May

30,900

50,800

30,800

30,700

30,600

3O,500

30,300

30,200

30,200

30,100

29,900

29,600

29,100

28,600

23,200

27,700

26,900

26,600

26,000

25,100

24,500

23,900

23,200

22,500

22,000

21,600

20,900

20,400

19,900

19,500

19,100

June

IS, 900

18,600

13,200

17,700

17,400

16,800

16,400

16,200

15,900

15,600

15,300

14,900

14,600

14,300

14,300

13,600

13,200

12,300

12,500

12,300

12,100

11,800

11,500

11,100

10,900

10,600

10,300

9.950

9,740

9,420

-

July

9,120

8,850

8,560

8,300

8,020

7,710

7,470

7,190

6,880

6,590

6,250

6,000

5,800

5,460

5,250

5,050

4,830

4,620

4,540

4,540

4,450

4,310

4,210

4,210

4,190

4,110

4,050

3,930

3,910

3,860

3,740

Aug.

3,650

3,570

3,540

5,500

3,430

3,360

3,270

3,160

3,200

3,230

a3,260

a3,290

a3,320

aS,350

a3,380

3,410

3,410

3,410

3,480

3,460

3,500

3,520

3,540

3,570

3,550

3,550

3,460

3,460

3,370

3,200

3,320

Sept.

3,250

3,180

3,180

3,200

a3,l50

a3,100

a3,060

a3,010

2,960

2,990

2,890

2,920

2,940

2,840

2,360

2,940

2,910

2,840

2,870

2,370

2,390

a2,S50

a2,S10

a2,770

a2,730

a2,700

a2,660

a2,620

a2,580

2,540

-

a No gage-height record; contents Interpolated.

Hote.- Contents for period Jan. 1 to Apr. 6 mostly computed from readings of supplemental gage.

Monthly gage height and contents, water year October 1940 to September 1941

Date Gage height 

(feet)

4 (\Q

£ 38

0 1Q

Contents 

(acre-feet)

Change in contents 

during month 

(acre-feet)
MUD LAKE BASIN 59

Camas Creek at Eighteenmile Shearing Corral, near Kilgore, Idaho

Location.- Water-stage recorder, lat. 44°18', long. 111°52', in sec. 7, T. 11 N., R. 39 

E., at county-road bridge at Eighteenmile Shearing Corral, just downstream from west 

Camas Creek, 7 miles south of Kilgore, and 18$ miles northeast of Dubols.

Drainage area.- 210 square miles.

Records available.- May 1937 to September 1941 (no winter records).

Extremes.- Kaxlmtan discharge recorded during year, 273 second-feet May 27 (gage height, 

a.89 reet); minimum recorded, 8.2 second-feet Aug. 5 (gage height, 1.54 feet).

1937-41: Maximum discharge, about 1,200 second-feet probably on May 2, 1938 (gage 

height, 4.70 feet, datum then in use, from floodmark), from rating curve extended 

above 600 second-feet; minimum recorded, 0.7 second-foot Aug. 19, 1940.

Remarks.- Records good except those for periods of no gage-height record, which are fair. 

Divertons above and below station for irrigation and stock water.

Cooperation.- Water-stage recorder inspected by employee of Water District No. 66.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

IS 

14 

16

16 

17 

18 

19 

20

21 

22 

25 

24 

26

26 

27 

28 

29 

SO 

SI

Oct.

13 

IS 

14 

16 

15

al4 

al4 

al4 

a!3 

al3

a!3 

alS 

IS 

IS 

IS

IS 

14 

14 

IS 

13

14

14 

14 

14 

14

14 

14 

15 

16 

16 

16

NOT.

16 

16 

17 

18 

16

16

16 

19

tio

Dec. Jan. Feb.

Month

Dot 

Noi 

Dec

C

Jar 

Pet 

HuAm

* ! 

Jui 

JuJ 

40,

Sei

1

rember 1-

alendar year

y......................................

Fater year

Mar. Apr.

Secondfoot -days

432 

131

-

4,405 

2,127 

623 

47S.O 

683

-

May

alSO 

al60 

a!60 

al60 

a 140

US 

110 

103 

116 

123

108 

112 

123 

164 

215

218 

166 

125 

131 

123

10S 

93 

91 

97 

101

129 

236 

249 

200 

16S 

143

Maximum

16 

19

_

249 

134 

50 

22 

26

-

June

126 

123 

101 

85 

103

120 

97 

120 

134 

alOS

83 

75 

68 

64 

73

70 

61 

52 

52 

68

66 

44 

36 

31 

28

26 

24

22 

28 

46

July

50 

40 

34 

31 

28

24

22 

22 

22 

19

16 

16 

16 

16 

16

15 

14 

14

13 

14

16 

17 

16 

15 

15

16 

18 

19 

17 

16 

16

Minimum

IS 

15

_

91 

22 

13 

9.2 

16

-

Aug.

16 

14 

11 

9.8 

9.2

10 

11 

9.S

9,2 

10

13 

14 

15 

18 

15

14 

12 

12 

13 

18

20

20 

19 

20 

22

20 

22 

20 

20 

IS 

IS

Mean

13.9 

16.4

-

142 

70.9 

20.1 

15.3 

19.4

-

Sept.

IS 

17 

17 

19 

20

19 

18 

17 

IS 

IS

IS 

18 

IS 

20 

19

17 

IS 

16 

17 

17

18 

20 

24 

26 

26

24 

24 

22 

20 

20

Run-off In 

acre-feet

857 

260

_

8,740 

4,220 

1,240 

938 

1,160

-

a No gage-height recordj discharge computed on basis of records for station at Oaxuus and other 

nearby stations.

t Jesuit of discharge measurement.

461677 O - 42 - 5
60 MUD LAKE BASIN 

Camas Creek at Cams, Idaho

Location.- Water-stage recorder, lat. 44°00', long. 112°13', in EiSEi sec. 21, T. 8 N., 

RT~o5~E., 350 feet upstream from Oregon Short Line R.R. bridge at Camas and half a 

mile upstream from Beaver Creek.

Records available.- April 1925 to September 1941. 

Average discharge.- 15 years (1926-41), 16.2 second-feet.

Extremes.- Maximum discharge during year, 210 second-feet Apr. 17; maximum gage height, 

3.23 feet Apr. 5; no flow at times during year.

1925-41: Maximum discharge, 900 second-feet probably May 3, 1938 (gage height, 

3.98, datum then in use, from floodmark), from rating curve extended above 400 secondfeet; no flow June 1-7, 1926, and during many periods in the years 1930-41.

Remarks.- Records good except those Oct. 1 to Mar. 28. which are poor. Diversions above 

station for irrigation and stock water.

Cooperation.- Gage-height record furnished by water-master for Mud Lake.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

20 

30 

31

Oct. Kov.

> 1

i

Dec.

> 0.5

i

Jan.

' 1

t

Feb.

. 1

t

Month

Get 

NOT

Dec

C

Jan 

Pet 

Mar 

Apt 

Maj 

Jun 

Jul 

Aug 

Sei

fl

£*::::::::::::::::::::::::::::::::::::

ater year 1940-43

Mar.

1

* 2 

5 

10 

10

10 

10 

bl2 

h!8 

13

13 

13 

13 

13 

16 

29

Apr.

52 

53 

74 

112 

168

147 

103 

94 

110 

129

143 

129 

129 

143 

106

153 

186 

114 

83 

66

74 

94 

125 

139 

125

116 

123 

110 

119 

91

Secondfoot -days

O 

30 

15.5

5,963.5

31 

28 

203 

3,410 

1,581 

672 

19 

0 

0

5,989.5

May

78 

65 

63 

66 

68

60 

49

37 

28 

29

28 

23 

21 

22 

33

74 

SI 

55 

43 

44

42 

33 

28 

24 

23

27 

40 

9S 

117 

99 

S3

Maximum

O

230

29 

186 

117 

69 

6 

0 

0

186

June

69 

60 

53 

42 

31

36 

50 

45 

44 

58

39 

26 

19 

17 

14

15 

15 

12 

6 

5

6 

7 

3 

1 

0

0

0 

O 

0 

0

July

1 

6 

6 

3 

2

1 

0 

0 

0 

0

0

o 

o

0

o

0 

0 

0

o

0

0 

0 

0 

0 

0

0 

0 

0 

0

o

0

Minimum

0

0

52 

21 

0 

. 0 

0 

0

0

Aug.

Mean

0 

1.0 

.50

16.3

1.0 

1.0 

6.5 

114 

51,0 

22.4 

.6 

0 

0

16.4

Sept.

Run-off In 

acre-feet

0 

60 

31

11,340

61 

56 

403 

6,760 

3,140 

1,330 

38 

0 

0

' 11,880

h Conputed on basis of staff-gage readings.

Note.- Ho gage-height record Oct. 1 to Mar. 22, Mar. 25-28; discharge computed on baala of field 

estimates, weather records, observer's notes, and records for other stations.
MJD LAKE BASIN 61

Beaver Creek at Spencer, Idaho

Location.- Staff gage, lat. 44°21', long. 112°11', in HEi sec. 23, T. 12 N., R. 36 E., 

at highway bridge, 0.4 mile southeast of Spencer post office and 2j miles upstrSam 

from Rattlesnake Creek.

Drainage area.- 120 square miles.

Records available.- October 1940 to September 1941.

Extremes.- Maximum discharge observed during year, 161 second-feet Mar. 31; gage heights 

of more than 5.4 feet (upper limit of gage) occurred several times during period of 

ice effect Mar. 17-21; minimum discharge observed, 1.6 second-feet (result of discharge 

measurement) Dec. 15.

Remarks.- Records good except those for periods of ice effect or no gage-height record, 

which are poor. Several ranch diversions above station. Gage read twice dally.

Rating table, water year 1940-41, except periods of lee effect (gage height. In feet, 

and discharge, In second-feet)

1.4 

1.6 

1.8

2.0 

2.3 

2.6

24

45

71

2.9 

3.2 

3.5

99

129

161

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

oat.

> a5

' 4

4 

4

4 

4 

3 

3 

3

3 

3 

3 

3 

3

4 

5 

6 

5 

6 

6

HOT.

6 

6 

7 

6 

6

6 

9 

10

(*) 

b6

Dec.

N

{*)

. *b5 

/

Jan.

\

b5

> (*)

Feb.

>

b6

t

Month

Oct 

NOT

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

flalendar year

ater year 1940-4^

Mar.

 v

b5

blO 

b20 

b30 

b30

b30 

b30 

*b40 

b50 

b40

b50 

b60 

76 

104 

139 

150

Apr.

129 

314 

94 

84 

80

53 

50 

51 

49 

58

60 

51 

50 

51 

49

51 

36 

44 

51 

38

36 

66 

59 

54 

71

61 

54 

53 

52 

44

Secondfoot-days

136 

168 

155

-

155 

140 

939 

1,795 

1,470 

884 

376 

272 

273

6,783

Hay

46 

45 

44 

55 

51

45 

42 

45 

47 

44

43 

41 

44 

51 

71

57 

51 

51 

51 

45

36 

35 

36 

33 

40

71 

76 

50 

44 

42 

38

Maximum

:

-

150 

129 

76 

61 

27 

14 

16

150

June

41 

40 

35 

36 

35

38 

52 

61 

47 

38

33 

26 

27 

26 

29

29 

28 

24 

30 

24

22 

18 

16 

15 

15

15 

15 

14 

20 

33

July

27 

17 

20 

18 

15

20 

15 

12 

13 

12

10 

10 

8 

9 

11

10 

8 

7 

9

17

14 

11 

8 

7 

7

14 

11 

10 

9 

9 

8

Minimum

~-

-

36 

33 

14 

7 

3 

6

-

Aug.

8

7 

5 

5 

4

4 

4 

3 

4 

 6

8 

10 

13 

10

B

7 

6 

7 

9 

12

14 

14 

12 

12 

12

14 

12 

12 

11 

10 

9

Mean

4.4 

6.3 

5.0

-

5.0 

5.0 

30.3 

59.8 

47.4 

29.5 

12.1 

8.8 

9.1

18.6

Sept.

9 

8 

8 

9 

9

e

10 

14 

11 

11

10 

10 

10 

10 

10

9 

8 

6 

6 

6

6 

7 

16 

12 

10

8 

S 

8 

8 

8

Run-off In 

aore-feet

270 

373 

307

-

307 

278 

1,860 

3,560 

2,920 

1,750 

746 

540 

541

13,450

* Winter discharge measurement made on this day.

a No ga^e-helght record; discharge ccmirated on basis of weather records and records for nearby 

stations.

b Stage-discharge relation affected by Ice.
62 MUD LAKE BASIN

Beaver Creek at Dubols, Idaho

Location.- Water-stage recorder, lat. 44°11', long. 112°14', In NWi sec. 21, T. 10 N., P 

 36 E., half a mile north of Dubols:

Drainage area.- 220 square miles.

Records available.- April 1921 to September 1941.

Average discharge.- 14 years (1921-24, 1928-29, 1931-41), 13.1 second-feet.

Extremes.- Maximum discharge during year, 1S8 second-feet Mar. 28 (gage height, 2.15 feet); 

no flow during long periods.

1921-41: Maximum discharge, 858 second-fe'et Apr. 7, 1930; maximum gage height, 

about 6.5 feet Mar. 16, 1926; no flow (luring long periods.

Remarks.- Records good except those for periods of fragmentary or no gage-height record, 

which are poor. Diversions above station for Irrigation.

Cooperation.- Gage-height record furnished by watermaster for Mud Lake.

Rating table, water year 1940-41 (gage height, In feet, and discharge, IB second-feet)

0.1 0 O.S 7 1.6 79 

.2 .1 1.0 14 1.9 136 

.4 .8 1.3 36 2.2 196 

.6 3

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

6 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

80

21 

22 

23 

84 

25

26 

87 

26 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Oct 

Hoi 

Dec

C

Jar 

Pel 

Hai 

Api 

Maj 

Jui 

Ju] 

Auf 

Sei

1

alendar year 19410. .....................

Fater year 1940-'

Mar.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

a8 

f20 

19 

25 

24

19 

21 

25 

f45 

f35

39

71 

124 

130 

146 

136

Apr.

126 

103 

76 

56 

52

39

28 

24 

22 

23

26 

26 

20 

14 

10

a5.0 

a4.0 

aS.O 

3.0 

6.6

14 

19 

16 

13 

IS

33 

24 

20 

16 

14

Secondfoot -days

0 

0 

0

1,076.6

0 

0 

663 

657.6 

601 

269.2 

S.5 

0 

0

2,519.5

May

12 

14 

20 

30 

29

26 

22 

20 

23 

16

14 

14 

26 

31 

50

44 

36 

30 

35 

31

24 

20 

15 

13 

13

19 

55 

40 

31 

24 

24

Maximum

0 

0 

0

113

0 

0 

146 

126 

56 

30 

6.2 

0 

0

146

June

26 

23 

16 

13 

14

17 

a25 

aSO 

aSO 

a!5

alO 

7.0 

5.5 

4.5 

4.9

7.3 

5.1 

4.2 

3.3 

6.6

2.4 

.2 

0

0 

0

0 

0 

0 

1.3 

7.9

July

6.2 

2.3 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Aug. Sept.

Mini* Mean ?£%£

00 0 

00 0 

00 0

0 2.94 2,130

00 0 

00 0 

0 28.5 1,760 

3.0 26.6 1,700 

12 25.6 1,590 

0 6.97 534 

0 .27 17 

00 0 

00 0

0 7.72 5,590

a No gage-height record; discharge computed on basis of Information furnished by observer, 

weather records, and records for station at Spencer.

f Fragmentary gage-height record; discharge computed from partially estimated gage heights.
MUD LAKE BASIN 63

Beaver Creek at Camas, Idaho

Location.- staff gage, lat. 44°01', long. 112°14', in NEi sec. 21, T. 8 N., R. 36 E., a 

quarter of a mile northwest of Oregon Short Line R. R. station at Caaas and threeeighths of a mile upstream from mouth.

Records available.- April 1921 to September 1941.

Extremes.- Maximum discharge observed during year, 52 second-feet Apr. l (gage height, 2.12 

.reet;; no flow on most days.

1921-41: Maximum discharge observed, 163 second-feet Apr. 7, 1930; usually no flow

past station except for short period in spring of each year; none passed station during

years 1931-36 and 1940.

Remarks.- Records good. Flow affected by diversions above Dubois, about 14 miles above 

gage, and by heavy channel losses below Dubois. Gage read twice dally.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. HOT. Dec. Jan. Feb.

Month

Oct 

Hen

Dec

C

Jan 

Pel 

Bar 

Apr 

Maj 

Jui 

Jul 

to* 

Sej

K

alendar year 1940 ......................

ater year 1940-41 ......................

Mar.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

28 

38 

39

Apr.

48 

26 

13 

6 

3

3

0 

0 

0

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Secondfoot-days

0 

0 

0

0

0 

0 

105 

98 

0 

0 

0 

0 

0

203

May

Maximum

0 

0 

0

0

0 

0 

39

4S 

0 

0 

0 

0 

0

48

June July

Minimum

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Aug.

Mean

0 

0

0

0

0 

0 

3.4 

3.3 

0 

0 

0 

0 

0

.6

Sept.

Run-off In 

acre-feet

0 

0 

0

0

0 

0 

208 

194 

0 

0 

0 

0 

0

402
64 MUD LAKE BASIN

Medicine Lodge Creek near Argora, Idaho

Location.- Water-stage recorder, lat. 44°19', long. 112°34' in eec. 34, T. 12 N., R. 33

E., at Albano Ranch, 24 miles southeast of Argora.

Drainage area.- About 160 square miles.

Records available.- November 1938 to September 1941.

Extremes.- Maximum discharge during year, 113 second-feet Aug. 19, from rating curve ex- 

 tended above 60 second-feet; maximum gage height, 1.66 feet Dec. 13 (affected by ice);

minimum discharge, 9 second-feet Dec. 14 (gage height, 0.53 foot).

1938-41: Maximum discharge observed, 166 second-feet Mar. 22, 1939 (gage height,

1.80 feet), from rating curve extended above 50 second-feet; minimum recorded, that of

Dec. 14, 1940.

Remarks.- Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Several diversions above station for irrigation.

Rating table, water year 1940-41, except periods of loe effect (gage height, In feet, 

and discharge. In second-feet)

0.5 

.7

0.9 

1.1

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

27 

26 

28 

27 

26

26 

25 

25 

25 

24

24 

23 

20 

18 

16

16 

15

12 

12 

12

11 

10 

10 

10 

10

15 

16 

15 

14 

15 

16

Nov.

16 

13 

14 

14 

14

15 

16 

17 

17 

16

IS 

19 

19 

23 

25

29 

30 

30 

27 

27

29 

25 

23 

25 

28

32 

38 

36 

34 

32

Dec.

32 

h31 

a31 

a31 

a31

a31 

a31 

a31 

a31 

a20

b!5 

blO 

blO 

b9

10

12 

15 

18 

a2O 

a25

a30 

32 

32 

32 

32

31 

31 

2S 

29 

30 

31

Jan.

31 

b25 

b!8 

b!8 

20

22 

26 

29 

32 

30

27 

23 

21 

28 

29

28 

29 

29 

29 

29

29 

28 

28 

27 

27

28 

26 

22 

28 

32 

28

Feb.

34 

22 

28

18 

18

20 

23 

24 

27 

28

2S 

29 

26 

27 

30

24 

24 

23 

26 

26

26 

26 

26 

26 

24

22 

26 

27

Month

Oct 

Non 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jxui 

Jul 

Aug 

Sei

fl

alendar year 194 0..... .................

ater year 1940-4

Mar.

27 

27 

26 

25 

26

26 

26 

26 

26 

25

24 

27 

26 

28 

27

27 

34 

40 

42 

42

33 

37 

37 

27 

29

38 

40 

34 

38 

33 

47

Apr.

Secondfoot-days

569 

701 

782

8,800

826 

710 

975 

678 

1,384 

1,781 

1,641 

1,548 

1,340

12,935

43 

40 

32 

25 

25

23 

21 

20 

20 

21

22 

21 

21 

2O 

20

21 

22 

20 

21 

a20

a20 

a20 

a20 

a20 

a20

a20 

a20 

a20 

a20 

a20

May

a20 

a25 

32 

33 

35

43 

50 

52 

54 

52

a49 

50 

52 

54 

57

52 

52 

50 

51 

48

44 

40 

40 

41 

43

54 

44 

38 

38 

42 

49

Maximum

28 

38 

32

38

32 

34 

47 

43 

57 

68 

61 

63 

48

68

June

52 

51 

49 

51 

57

57 

64 

68 

57 

56

55 

57 

57 

58 

63

58 

59 

58 

59 

58

55 

57 

68 

66 

65

66 

64 

69 

a65 

a63

July

a61 

a59 

a57 

a57 

57

57 

55 

55 

52 

50

50 

51 

52 

55 

56

54 

55 

54 

52 

55

51 

50 

46 

48 

50

55 

5O 

50 

49 

48 

48

Minimum

10 

13 

9

9

18 

18 

24 

20 

20 

49 

48 

44 

42

9

Aug.

47 

46 

a46 

a45 

a45

a45 

a44 

a44 

a45 

43

63 

61 

54 

51 

50

48 

47 

48 

56 

55

52 

51 

54 

54 

51

52 

50 

50 

49 

48 

49

Mean

18.4 

23.4 

25.2

24. 0

26.6 

25.4 

31.5 

22.6 

44.6 

59.4 

52.9 

49.9 

44.7

35.4

Sept.

48 

46 

47 

46 

45

45 

46 

46 

46

46

45 

45 

44 

45 

45

46 

45 

44 

44 

44

44 

44 

45 

45 

43

43 

42 

42 

42 

42

Run-off In 

acre-feet

1,130 

1,390 

1,550

17, 450

1,640 

1,410 

1,930 

1,34O 

2,750 

3,530 

3,250 

3,070 

2,660

25,650

a No gage-height record; discharge computed on basis of weather records and records for station 

at Ellla Ranch.

b Stage-dlacharge relation affected by Ice. 

h Computed from ataff-gage reading.
MUD LAKE BASIN 65

Medicine Lodge Creek at Ellls Ranch, near Argora, Idaho

Location.- Water-stage recorder, 'lat. 44°17'. long. 112°30', in sec. 7, T. 11 II., R. 34 

E., 4 miles upstream from Middle Creek, 6i miles southwest of Argora, and 17 miles 

northwest of Dubois. Prior to November 16, 1940, staff gage 1,000 feet upstream.

Records available.- October 1940 to September 1941.

Extremes.- Maximum discharge during period, 129 second-feet July 14 (gage Height, 3.23 

feet); minimum, 9 second-feet Dec. 12 (gage height, 1.17 feet).

Remarks.- Records good except those based on staff-gage readings, which are fair.

Several diversions above and below station for irrigation. Gage read once daily Oct. 

19 to IIov. 15.

Rating tables, water year 1940-41 (gage height, In feet, and discharge.

In second-feet) 

(Shifting-control method used Nov. 16 to Dec. 12)

Oct. 19 to Nov. 16 to Sept. 30

1.3 12 1.1 7.3 2.3 60 

1.5 IS 1.3 13 2.6 eO 

1.7 26 1.5 21 2.9 101 

1.9 35 1.7 29 3.3 133 

2.0 44

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

16 

16

16 

17 

15 

15 

14

20 

19 

18 

18 

a!9 

20

Nov.

19 

IS 

IS 

17 

IS

18 

IS 

IS 

IS 

IS

13 

13 

17 

22 

24

28 

26 

28 

22 

25

29 

IS 

17 

18 

27

29 

36 

34 

34 

34

Dec.

34

33 

33 

33 

33

55 

33 

34 

34

18

14 

10 

10 

10 

10

10 

11 

12 

17 

25

51 

37 

38 

57 

36

36 

36 

29 

35 

36 

36

Jan.

34 

16 

15 

15 

18

19 

22 

25 

28 

51

29 

27 

22 

33 

38

34 

34 

34 

34 

34

33 

33 

33 

54 

35

33 

28 

26 

32 

2S 

24

Feb.

21 

IS 

17 

16 

16

20 

22 

24 

31 

36

34

35 

31 

54 

29

28 

33 

29 

34 

33

33 

33 

33 

33 

32

27 

31 

31

Month

Oct 

HOM

Dec

C

Jan 

Fet 

Mar 

Apr 

May 

Jur 

Jul 

Aug 

Se[

T

ober 19-

alendar year

he perlc

liar.

32 

34 

34 

32 

52

54 

53 

32 

31 

27

25 

22 

25 

23 

26

52 

33 

46 

46 

48

40 

42 

45 

55 

35

42 

47 

40 

56 

33 

47

Apr.

40 

38 

34 

27 

29

27 

25 

20 

19 

23

25 

23 

22 

21 

21

23 

23 

22 

22 

25

2S 

21 

20 

20 

24

20 

20 

21 

21 

22

Secondfoot-days

225 

674 

832

-

879 

796 

1,101 

716 

1,442 

1,786 

1,732 

1,654 

1,501

-

May

22

25 

27 

31 

54

42 

50 

53 

53 

55

52 

53 

55 

57 

60

53 

55 

54 

54 

52

49 

44 

43 

44 

44

52 

48 

42 

43 

44 

49

Maximum

20 

36 

38

_

38 

36 

48 

40 

60 

69 

64 

62 

53

-

June

53 

48 

48 

50 

53

53 

60 

67 

59 

58

53 

59 

59 

59 

65

62 

60 

59 

59 

58

56 

56 

63 

64 

64

66 

64 

66 

69 

66

July

63 

60 

59 

59 

59

53 

57 

59 

55 

54

58 

59 

58 

64 

62

59 

53 

58 

53 

60

53 

56 

54 

54 

55

61 

56 

54 

53 

52 

52

Aug.

51 

51 

50 

46 

48

43 

46 

46 

49 

53

59 

62 

56 

55 

54

55 

53 

53 

58 

57

56 

55 

56 

53 

56

55 

54 

53 

53 

53 

53

Minimum Mean

14 17.2 

13 . 22.5 

10 26.8

-

15 28.4 

17 26.5 

22 35.5 

19 23 9 

22 46.5 

4S 59.5 

52 57.5 

46 53.4 

48 50.0

-

Sept.

52 

52 

52 

53 

52

51 

52 

52 

52 

52

51 

50 

50 

50 

50

49 

49 

48 

48 

49

49 

48 

51 

50 

49

43 

48 

48 

48 

43

Run-off In 

acre-feet

442 

1,340 

1,650

-

1,740 

1,530 

2,180 

1,420 

2,860 

3,540 

3,530 

3,230 

2,930

26,540

a No gage-height record; discharge Interpolated.
66 MUD LAKE BASIN

Medicine Lodge Creek near Small, Idaho

Location.- Water-stage recorder, lat. 44°16', long. 112°25', In NWi sec. 25, T. 11 N., R. 

&4 E., 400 feet west of H. W. Small's ranch house, 1 mile downstream from Indian 

Creek, 4 miles northwest of Small, and 11 miles northwest of Dubols. October 18 to 

November 16, 1940, staff gage at practically same site but at datum 1.99 feet lower. 

Former gage (1921-23) at site 100 feet downstream at different datum.

Drainage area.- 270 square miles.

Records available.- April 1921 to December 1923, October 1940 to September 1941.

Extremes.- Maximum discharge during period, 101 second-feet May 15; maximum gage height 

recorded, 5.60 feet (Ice Jam) Jan. 17; minimum discharge observed, 8 second-feet 

(result of discharge measurement) Dec. 14.

1921-23, 1940-41: Maximum discharge recorded, 196 second-feet June 1, 1921 (gage 

height, 2.8 feet, site and datum then In use); minimum, that of Dec. 14, 1940.

Remarks.- Records good except those prior to Nov. 12, which are fair, and those for 

periods of Ice effect, which are poor. Many small diversions above and below station 

for Irrigation. Gage read once dally October 18 to Nov. 16.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

24 

24 

24

24 

23 

23 

23 

24

28 

28 

27 

27 

27 

26

HOT.

28 

26 

26 

26 

26

27 

29 

29 

29 

28

26 

b28

b26 

b2S

(») 

> b36

j

Dec.

s (*) 

(*)

> b30

t

Jan.

 b36

Feb.

(*) 

> b36

Month

Oct 

Hoi 

Dec

C

Jar 

Fet 

Mat 

Apr 

Maj 

JUT 

Jul 

Aug 

Sei

1

ober 18-1*1

alendar year

he perio

Mar.

42 

48 

48 

a48 

a 42

a48 

a48

ail 

40 

39

39 

40 

43 

51 

46

49 

53 

a66 

a57 

a67

a60 

a66 

58 

47 

46

64 

63 

58 

67

6S 

66

Apr.

68 

64 

46

40 

40

39 

40 

37 

35 

36

42 

38 

38 

37 

37

37 

37 

34 

33 

38

39 

37 

37 

37 

41

40 

36 

40 

40 

42

Secondfoot-days

364 

946

930

_

1,085 

960 

1,514 

1,188 

2,412 

2,399 

2,058 

1,671 

1,570

-

May

44 

48 

68 

67 

62

67 

74 

77 

77 

79

79 

83 

91 

96 

96

95 

93 

94 

93 

91

66 

76 

76

76 

77

86 

66 

76 

74 

74 

76

Maximum

26

_

66 

6S 

98 

94 

60 

77 

66

-

June

82 

77 

73 

74 

79

79 

63 

94 

S6 

82

60 

80 

79 

79 

82

62

SO 

79 

Si 

73

76 

73 

62 

79 

77

79 

76 

79 

86 

64

July

78 

76 

72 

78 

70

69 

66 

69 

66 

63

66 

68 

66 

70 

60

67 

66 

64 

66 

68

66 

68 

69 

69 

69

68 

63 

61 

62 

61 

69

Minimum

S

23

_

39 

33 

44 

73 

69 

62 

60

-

Aug.

69 

58 

67 

65 

64

54 

52 

62

6S 

65

69 

77 

70 

66 

63

61 

60 

61 

66 

66

63 

60 

60 

63

60

60 

69 

67 

66 

66 

66

Mean

26.3 

31.6 

30.0

_

36.0 

36.0 

48.8 

39.6 

77.8 

80.0 

66.4 

60.4 

68.3

-

Sept.

64

68 

64 

66

53

65 

64 

66 

66 

64

61 

60 

61 

61 

58

68 

61 

58 

60 

58

58 

58 

64 

66 

65

61 

60 

60 

50 

60

Run-off in 

acre-feet

708 

1,880 

1,840

_

8,160 

1,940 

3,000 

8,960 

4,780 

4,760 

4,080 

3,710 

3,110

34,510

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records and records for stations 

upstream.

b Stage-discharge relation affected by ice.
LITTLE LOST RIVER BASIN 67

Little Lost River near Howe, Idaho

Location.- Water-stage recorder, lat. 43°53', long. 113°06', In sec. 3, T. 6 N., R. 28

 E., a quarter of a mile upstream from diversion dam of Blalne County Investment Co., 

6 miles northwest of Berenice, and 7 miles northwest of Howe.

Records available.- April 1921 to September 1941, except during winters.

Extremes.- Maximum discharge during year, 150 second-feet June 2; maximum gage height

 recorded, 4.70 feet Jan. 19 (Ice effect); minimum discharge observed, 4.1 second-feet 

Dec. 12 (discharge measurement).

1921-41: Maximum discharge, about 450 second-feet Aug. 11, 1936, during cloudburst 

(gage height, 3.1 feet, datum then In use, from floodmark), from rating curve extended 

above 100 second-feet; minimum observed, that of Dec. 12, 1940.

Remarks.- Records good. Many diversions above and below station for Irrigation. Prior to

 1937 water was stored In small reservoir of Blalne County Investment Co. on Dry Creek, 

about 40 miles above station, and during Irrigation seasons was released and carried 

through Corral and Wet Creeks to Little Lost River, from which It was diverted into 

the company's main canal a quarter of a mile below station.

Cooperation.- Sage-height record furnished by watermaster for Little Lost River.

Rating tables, water year 1940-41, except period of Ice effect (gage height, In feet, 

and discharge, In second-feet)

Oct. 1 to Nov. 10

2.3

2.4

2.5

2.6

Feb. 20 to Sept. 30

32.5

42

52.5

64

2.1 

2.3 

2.5 

2.7

16

31

49.5

2.9 

3.1 

3.3

96

125

156

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

3 

9 

10

11 

12 

IS 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

SI

Oct.

.52 

4S 

50 

52 

49

47 

46 

44 

41 

41

42 

43 

41 

42 

42

42 

44 

42 

40 

41

42 

43 

47 

46 

45

56 

61 

55 

51 

50 

49

Nov.

48 

49 

50 

47 

48

55 

5S 

5S 

56 

47

Dec.

t4.1

Jan.

t31

Feb.

22

22 

22 

22 

22 

20

b!9 

b!9 

20

Month

Oot 

Hoi 

Dec

C

Jar 

Pel 

Mu 

Api 

Ha] 

Jui ju] 

Au<

Sej

1

ember 1-

alendar year

ruary 20

ater year

liar.

24 

25 

24 

22 

24

24 

25 

25 

25 

26

27 

29 

29 

30 

30

34 

43 

57 

59 

55

41 

42 

48 

44 

43

46 

61 

64 

63 

70 

6S

Apr.

61 

56 

57 

53 

54

52 

47 

45 

47 

57

53 

49 

48 

4S 

47

51 

53 

49 

46 

50

51 

51 

52 

56 

62

60 

61 

64 

66

71

Seccndfoot-days

1,434 

516

-

1SS 

1,227 

1,617 

3,298 

3,193 

1,843 

1,694 

1,563

-

May

75 

SI 

S6 

93 

91

88 

87 

84 

S4 

76

73 

81 

95 

106 

114

109 

106 

107 

120 

114

109 

109 

120 

122 

128

134 

136 

138 

142 

142 

143

Maximum

61 

58

-

22 

70 

71 

143 

145 

75 

92 

60

-

June

145 

143 

137 

137 

131

126 

134 

136 

131 

119

109 

103 

102 

104 

107

110 

106 

109 

103 

104

96 

86 

82 

S4 

83

78 

70 

72 

76 

70

July

69 

67 

68 

75 

72

67 

62 

70 

66 

53

53 

5S 

53 

61 

5S

55 

60 

57 

5S 

71

69 

59 

55 

51 

51

51 

51 

53 

52 

47 

46

Minimum

40 

47

-

19 

22 

45 

75 

70 

46 

33 

44

-

Aug.

47 

44 

40 

38 

37

37 

35 

33 

35 

51

U7 

78 

92 

82 

71

59

54 

67 

76 

69

70 

60 

56 

54 

53

53 

54 

48 

47 

46 

46

Mean

46.3 

51.6

-

20.9 

39.6 

53.9 

106 

106 

59.5 

54.6 

52.1

-

Sept.

46 

45 

4S 

43 

46

44 

49 

54 

53 

53

51 

51 

52 

54 

54

53 

53 

52 

50 

56

59

54 

58 

60 

55

54 

53 

53 

53 

52

Run-off In 

acre-feet

2,840 

1,020

-

373 

2,430 

3,210 

6,540 

6,330 

3,660 

3,360 

3,100

-

t Result of discharge measurement.

b Stage-discharge relation affected by Ice.
68 LITTLE LOST RIVER BASIN

Blaine County Investment Co.'s canal near Howe, Idaho

Locatlon. - Staff gage and Cippoletti weir, lat. 43°53', long. 113°05', in NWiNWi sec. 11, 

T. 6 N., R. 28 E., 665 feet downstream from head gates and 7 miles northwest of Howe.

Records available.- April 1924 to September 1941 (prior to 1939, irrigation seasons only).

Extremes. - Maximum discharge observed during year, 53 second-feet Mar. 28 (gage height, 

2 60 feet); no flow during long periods.

1924-41: Maximum discharge observed, 87 second-feet May 24, 25, 1928; no flow at 

times.

Remarks.- Records good except those for Mar. 5-19, which are poor. Canal diverts water 

"" from Little Lost River in sec. 2, T. 6 N., R. 28 E., for irrigation of lands in 

project of Blaine County Investment Co. Gage read once dally.

Cooperation.- Gage-height record arid results of one discharge measurement furnished by 

watermaster for Little Lost River.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

S

6 

7 

8 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

12 

7.6 

9.0 

10 

9.6

6.9 

8.9 

8.6 

7.9 

5.3

4.4 

4.4 

4.4 

4.0 

3.S

3.8 

3.8 

3.8 

3.8 

3.5

3.6 

1.2 

0 

0 

0

0 

0 

0 

0 

0 

0

Nov.

7.1 

14 

15 

17 

18

27 

29 

34 

34 

34

all 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec.

Month

Dot 

Noil 

Dec

C

Jar 

Fet 

Max

Apr 

Maj 

Jur 

Jul 

Aug 

Sep

VI

Jan. Feb.

alendar year 19. 0.......... ............

 ust. ...................... .

ater year 1940-'

Mar.

0 

0 

0 

0

1

2 

2 

2 

2 

2

2 

2

I

1 

1

1 

1

1 

1 

17

27 

37 

34 

30 

31

31 

46 

53 

50 

46 

45

Apr.

40 

37 

30 

27 

28

21 

17 

10 

11 

14

13 

7.2 

.3 

.2 

.2

.1 

.1 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Secondfoot -days

132.5 

240.1 

0

889.7

0 

0 

471 

256.1 

599.8 

659.7 

85. S 

0 

0

2,445.0

May

0 

0 

4.8 

11 

11

11 

11 

11 

11

11

11 

11 

14 

22 

22

21 

20 

21 

26 

26

23 

22 

26 

26 

28

30 

33 

33 

33 

35 

3S

Maximum

12 

34 

0

34

0 

0 

53 

40 

35 

36 

6.0 

0 

0

53

June.

36 

36 

33 

31 

30

26 

30 

31 

36 

34

24 

19 

19 

22 

22

22 

22 

23 

23

24

21 

14 

14 

14 

14

14 

9.9 

5.6 

5.3 

4.9

July

3.3 

3.3

1.1 

0 

0

0 

0 

0 

0 

0

4.1 

4.1 

4.1 

4.1 

4.1

4.1 

4.1 

4.1 

4.1 

5.3

6.0 

4.3 

4.3 

3.3 

3.3

3.3 

3.3 

3.3 

3.3

1.4 

.1

Minimum

0 

0 

0

0

0 

0 

0 

0 

0 

4.9 

0 

0 

0

0

Aug.

'

Mean

4.27 

8.00 

0

2.43

0 

0 

15.2 

8.54 

19.3 

22.0 

2.77 

0 

0

6.70

Sept.

Run-off in 

acre-feet

263 

476 

0

1,760

0 

0 

934 

508 

1,190 

1,310 

170 

0 

0

4,S50

Kote.- Discharge Mar. 5-19 computed on basis oC data furnished by watermaster and one field 

estimate; Nov. 11, Apr. 12-16, July 30, 31 conrouted on basis of field estimates and known gate 

changes.
BIO LOST RIVER BASIN 69 

Big Lost River at Howell Ranch, near Chilly, Idaho

Location.- Water-stage recordsr, lat. 44°01', long. 114°OQ', in see. 30, T. 8 N., R. 21 

E., at Howell Ranch, 9 miles southwest of Chilly and 21 miles northwest of Mackay.

Records available.- April 1904 to August 1906, July 1907 to November 1914, and May 1920 

to September 1941, except during winters.

Extremes.- Maximum discharge recorded during year, 1,530 second-feet May 27 (gage height,

 3.K5 feet); minimum observed, 31 second-feet (result of discharge measurement) Dec. 

10, but may have been less during winter.

1904-14, 1920-41: Maximum discharge, 3,500 second-feet June 12, 1921 (gage height, 

5.94 feet), from rating extended above 3,000 second-feet; minimum observed, 19 secondfeet (result of discharge measurement) Dec. 12, 1939.

Remarks.- Records good. No regulation, several email diversions above station. Hamerly

 ditch (capacity, about 20 second-feet) diverts a quarter of a mile below station.

Cooperation.- Gage-height record furnished by watermaster for Big Lost River.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

2 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

S3 

29 

30 

51

Oct.

1S8 

206 

331 

215 

200

191 

1S5 

ISO 

180 

177

174 

171 

169 

163 

158

150 

145 

140 

135 

130

130 

130 

135 

132 

147

177 

191 

171 

160 

150 

145

NOT.

145 

147 

140 

135 

114

132 

130 

126 

130 

110

Dec.

t31

Jan. Feb.

Month

Oct 

Non 

Dec

C

JaE

Pet 

Mai 

Api 

Ma, 

Jan 

Jul 

Aug 

Sep

fl

ember 1-

alendar year

ch. .....-.------------------------.----

11 11-30

ater year

Mar. Apr.

h!04 

alOO 

alOO 

a!05 

allO

allO 

allO 

a!05 

100 

110

116 

121 

155 

200 

194

247 

237 

346 

364 

463

Secondfoot -days

5,156 

1,309

-

3, 

36, 

23, 

12, 

7, / _

567 

156 

365 

738 

067 

241

-

May

469 

473 

523 

541 

500

443 

414 

405 

396 

447

610 

994 

1,260 

1,090 

906

790 

790 

1,000 

835 

722

612 

1,030 

1,220 

1,440 

1,400

1,440 

1,440 

1,130 

93S 

350 

S2S

Maximum

231 

147

-

463 

1,440 

1,260 

651 

565 

160

-

June

760 

722 

320 

S5S 

335

326 

994 

1,090 

946 

866

914 

1,040 

1,170 

1,220 

1,260

1,220 

1,170 

1,130 

1,220 

1,050

930 

986 

1,070 

1,020 

93S

752 

708 

672 

604 

572

July

534 

604 

644 

651 

610

59S 

637 

624 

553

473

433 

396 

396 

396 

396

379 

35S 

- 35Q 

354 

401

339 

319 

309 

264 

263

256 

247 

256 

243 

221 

209

Minimum

130 

110

-

100 

396

572 

209 

150 

130

-

Aug.

197 

133 

177 

169 

163

158 

150 

150 

160 

197

341 

565 

443 

331 

2S4

260 

243 

243 

227 

221

224 

250 

240 

218 

206

203 

191 

130 

174 

171 

163

Mean

166 

131

-

173 

644 

946 

413 

229 

141

-

Sept.

153 

155 

160 

153 

147

142 

142 

142 

140 

135

135 

137 

135 

135 

a!35

a!35 

a!35 

a!35 

a!35 

a!45

a!45 

a!45 

al45 

a!45 

142

142 

142 

137 

132 

130

Run- off In 

acre-feet

10, 230 

2,600

-

7,080 

51,330 

56,260 

25,360 

14,060 

8,410

-

t Result of discharge measurement.

a No gage-height record; discharge computed on basis of weather records and records for stations 

on nearby streams.

h Computed from staff-gage reading.
70 BIG LOST RIVER BASIN

Big Lost River (east channel) above Mackay Reservoir, near Mackay, Idaho

Location.- Water-stage recorder, lat. 43°59', long. 113°45', in sec. 32, T. 8 N., R. 23

 E., above flow line of reservoir, 3 miles upstream from Mackay Dam, and about 74 miles 

northwest or Mackay.

Records available.- May 1919 to September 1941. 

Average discharge.- 22 years, 49.6 second-feet.

Extremes.- Maximum discharge during year, 560 second-feet May 27; maximum gage height,

 3.8K feet June 20 (backwater from Mackay Reservoir); minimum dally discharge, 1 secondroot Feb. 13 to May 13.

1919-41: Maximum discharge, 1,320 second-feet June 7, 1938 (gage height, 5.02 feet); 

no flow during long periods in each year of 1920, 1923-38, and 1940.

Remarks.- Records good except those for period of backwater from Mackay Reservoir and

 tnose below 10 second-feet which are fair. Diversions above station for Irrigation. 

The sum of the combined discharge of east and west channels of Big Lost River and of 

the combined discharge of east and west channels of Warm Spring Creek, near Mackay, 

represents practically entire surface flow of Big Lost River which enters Mackay 

Reservoir.

Cooperation.- Gage-height record furnished by watermaster for Big Lost River.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

5 

4 

4 

4 

4

4 

4 

4 

3 

h3

3 

h3 

3 

3 

3

3 

3 

3 

hS 

3

3 

3 

4 

4 

4

4 

4 

4 

4 

4 

4

Hov.

4 

h3 

3 

3 

3

4 

4 

4 

h4 

4

4 

4 

3 

3 

3

h3 

3 

3 

3 

3

3 

3 

3 

3 

3

3 

3 

4 

4 

4

Dec.

4 

4 

4

4 

4

4

4 

4 

h4 

4

4 

4 

4 

4 

4

4 

4 

4 

4 

4

4 

4 

4 

3 

3

3 

3 

3 

3 

3 

3

Jan.

3 

3 

3 

3 

3

3 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

2 

2

h2 

2 

2 

2 

2

2 

2 

2 

2 

2 

2

Feb.

2 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1

Month

Od 

HOT 

Dec

C

Jar 

Fel 

Mai 

Api 

Maj 

Jur 

Jul

Aue

Sej 

»

alendar year 19' 0......................

ater year 1940-4

Mar.

1 

1 

1 

1 

1

1 

hi

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1 

1

Apr.

1 

1 

1 

1 

1

1 

1 

1 

1 

hi

1 

1 

1 

1 

1

1 

1 

hi

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1

Secondfoot-days

111 

101 

116

15,402

6S 

40 

31 

30 

5,672 

10,477 

4, 1S7 

1,259 

730

22 822

May

1

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

52 

142 

166

186 

197 

243 

259 

235

233 

271 

335 

404 

47S

504 

532 

42S 

358 

324 

313

Maximum

5 

4 

4

440

3 

2

1 

1 

532 

460 

247 

67 

35

532

June

290 

270 

270 

300 

320

310 

330 

3SO 

370 

340

320 

330 

370 

410 

440

440 

430 

430 

440 

460

410 

350 

350 

360 

370

340 

290 

270 

250 

237

July

220 

215

247 

243

224

200 

193 

178 

15S

150 

138 

134 

135 

135

12S 

123 

120 

120 

130

122 

105 

92 

78 

71

62 

54 

52 

47 

43 

42

Minimum

3 

3 

3

0

2 

1 

1 

1 

1 

237 

42 

22 

21

1

Aug.

38

36 

33 

30 

2S

25 

24 

22 

23 

24

32 

46 

67 

61 

52

47 

50 

4S 

47 

47

47 

46 

47 

47 

46

46 

44 

42 

40 

38 

36

Mean

3.6

3.4 

3.7

42.1

2.2 

1.4 

1.0 

1.0 

183 

349 

135 

40.6 

24.3

62.5

Sept.

35 

34 

33 

30 

29

28 

27 

26 

25 

25

24 

23 

23 

23 

22

21 

21 

22 

22 

22

21 

21 

22 

23 

22

22 

21 

21 

21 

21

Run-off In 

acre-feet

220 

200 

230

30,550

135 

79 

61 

60 

11,250 

20,780 

8,300 

2,500 

1,450

45,260

h Computed from staff-gage readings.

Note.- Ho gage-height record Oct. 1-4, 7-25, NOT. 1 to May 12, Sept. 5, 10-12, 17-19 except for 

staff gage readings on days Indicated; discharge Interpolated or computed on basis of records for 

nearby stations. Backwater from Mackay reservoir June 1-29; discharge computed on basis of gageheight record, reservoir record, discharge aeasurment, and records for nearby stations.
BIG LOST RIVER BASIN 71 

Big Lost River (west channel) above Mackay Reservoir, near Mackay, Idaho

Location.- Water-stage recorder, lat. 43°58', long. 113°45', In sec. 5, T. 7 N., R. 23 

&., above flow line of reservoir, 3 miles upstream from Mackay Dam, and about 7i 

miles northwest of Mackay.

Records available.- May 1919 to September 1941. 

Average discharge.- 22 years 55.3 second-feet.

Extremes.- Maximum discharge during year, 299 second-feet May 27 (gage height, 3.42 feet): 

minimum, 31 second-feet May 6 (gage height, 1.88 feet).

1919-41: Maximum discharge, 1,200 second-feet (estimated), sometime during period 

June 5-16, 1921 (gage height, 4.45 feet, site and datum then In use); minimum, 9 secondfeet May 22, 26, 1935.

Remarks.- Records good except those for period of backwater from Mackay Reservoir, which 

are ralr. Diversions above station for irrigation. The sum of the combined discharge 

of east and west channels of Big Lost River and the combined discharge of east and west 

channels of Warm Spring Creek, near Mackay, represents practically the entire surface 

flow of Big Lost River which enters Mackay Reservoir. This summation Is published on 

the following page.

Cooperation.- Gage-height record furnished by water-master for Big Lost River, 

.scharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

80

81 

88 

85 

84 

85

86

27 

88 

89

30 

31

Oct.

54 

54 

56 

53 

52

51 

51 

52 

51 

51

52 

52 

52 

52 

52

52 

52 

52 

53 

53

52 

52 

52 

52 

52

53 

52 

52 

51 

50 

50

Nov.

50 

51 

51 

51 

51

51 

51 

50 

50 

50

50 

45 

a4S 

a48 

a47

47 

47 

47 

47 

47

47 

47 

47 

47 

47

47 

46 

46 

46 

46

Dec.

46 

46 

46 

46 

46

46 

46 

46 

46 

46

47 

47 

46 

46 

46

46 

46 

44 

44 

43

43 

43 

44 

44 

a44

a44 

a43 

43 

43 

43 

42

Jan.

42 

42 

a42 

43 

43

43 

43 

43 

a42 

a42

41 

41 

41 

41 

a41

a42 

a43 

43 

43

41

41 

41 

41 

41 

41

41 

41 

41 

41 

41 

41

Feb.

43 

43 

43 

43 

43

a42 

a40 

39 

39 

39

39 

a39 

a39 

a39 

39

39 

a39 

a39 

a39 a39-

a39 

39 

39 

39 

39

39 

40 

40

Month

Oct 

Ho\

Dec

c

Jar 

Pet 

Max 

API 

Maj 

Jur 

Jul 

to* 

Set

Tl

alendar year 1940......................

rater year 1940-4

liar.

40 

40 

40 

39 

38

36 

36 

36 

36 

36

36 

36 

35 

35 

35

a35 

a35 

a35 

a34 

a34

a34 

34 

34 

34 

33

34 

34 

34 

34 

34 

34

Apr.

35 

35 

36 

35 

35

35 

35 

34 

34 

35

35 

35 

35 

34 

34

33 

33 

33 

33 

33

33 

33 

34 

34

' 34

34 

34 

34 

34 

33

Secondfoot-days

1,615 

1.44S 

1,391

20,142

1,293 

1,118 

1,100 

1,024 

3,712 

5,539 

3,150 

1,911 

1,736

25,037

May

33 

33 

33 

33 

33

32 

32 

33 

34 

33

33 

33 

43 

91 

117

125 

133 

151 

166 

169

154 

161 

17S 

209 

244

260 

290 

24S 

207 

192 

1S9

Maximum

56 

51 

47

185

43 

43 

40 

36 

290 

215 

141 

79 

60

290

.... ... , 

June

183 

173 

170 

180 

190

1S5 

190 

200 

195 

190

ISO 

1S5 

195 

200 

205

205 

205 

200 

211 

215

1S5 

175 

180 

ISO 

190

170 

155 

159 

152 

136

July

130 

12S 

131 

139 

141

133 

125 

122 

117 

110

106 

103 

95 

100 

102

95 

97 

96 

98 

102

104 

100 

92 

S6 

79

76 

74 

71 

67 

64 

61

Minimum

50 

46 

42

25

41 

39 

33 

33 

32 

136 

61 

54 

56

32

Aug.

59 

54 

54 

54 

54

'54 

54 

54 

57 

57

65 

65 

76 

79 

74

69 

67 

65 

64 

61

61 

60 

60 

61 

61

63 

63 

61 

61 

61 

60

Mean

52.1 

48.3 

44.9

55.0

41.7 

39.9 

35.5 

34.1 

120 

185 

102 

61.6 

57.9

68.6

Sept.

59 

59 

59 

57 

56

57 

57 

57 

57 

57

56 

56 

60 

60 

59

59 

57 

57 

59 

59

59 

59 

69 

59 

59

57 

57 

57 

56 

57

Run- off In 

acre-feet

3,200 

2,870 

2,760

39,950

8,560 

2,280 

2,180 

2,030 

7,360 

10,990 

6,850 

3,790 

3,440

49,650

a Ho gage-height record; discharge interpolated.

Hote.- Backwater from Hackay Reservoir June 3-27; discharge computed on basis of discharge measurement, gage-height record, reservoir record, and records for nearby stations.
72 BIO LOST RIVER BASIN

Combined discharge, In second-feet, of Big Lost River (east and west channels) and Warm Spring 

Creek (east and west channels) atiOYe JJackay Reservoir n«ar Mackay, Idaho, water year October

1940 to September 1941

Cay

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

178 

179 

182 

174 

172

171 

172 

171 

169 

169

170 

172 

172 

172 

173

172 

172 

172 

174 

174

173 

172 

173 

172 

172

178 

176 

173 

170 

167 

168

Nov.

168 

168 

165 

164 

164

165 

167 

166 

166 

166

166 

164 

161 

161 

162

162 

162 

162 

162 

160

160 

160 

159 

159 

159

159 

158 

161 

161 

159

Dec.

159 

159 

159 

159 

159

159 

159 

158 

157 

157

158 

159 

158 

159

157

157 

158 

153 

153 

152

154 

154 

155 

155 

156

155 

155 

153 

153 

153 

153

Jan.

152 

153 

153 

154 

154

154 

153 

153 

152

152

151

151 

151 

150 

150

151 

152 

152 

152 

150

148 

148 

148 

148 

148

148 

148 

147 

147

147 

147

Feb.

150 

150 

150 

149 

150

148 

146 

145 

146 

146

146 

146 

144 

144 

145

145 

145 

144 

144 

143

143 

143 

143 

144 

144

144 

143 

145

Month

Oct 

No\ 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Ju3 

Aug 

Sej

HI

alendar year 19<

ater year 1940-4

Mar.

146 

146 

145 

144 

141

137 

137 

139 

139 

139

139 

139 

136 

136 

136

136 

138 

138 

138 

138

137 

137 

135 

135 

133

134 

133 

133 

133 

133 

133

Apr.

134 

134 

134 

131 

134

130 

129 

128 

129

131

129 

124 

124 

122 

119

120 

120 

118 

116 

117

120 

121 

121 

121 

122

122 

122 

122 

118 

110

Secondfoot -days

5,354 

4,876 

4,845

73, 190

4,664 

4,075 

4,263 

3,722 

13,285 

21,818 

11,259 

6,582 

5,945

90,688

May

110 

110 

108 

107 

108

106 

107 

109 

109 

106

105 

106 

174 

322 

383

413 

440 

517 

565 

527

514 

561 

657 

803 

949

1,010 

1,100 

918 

765 

697 

679

Maximum

182 

168 

159

805

154 

150 

146 

134 

1,100 

904 

539 

261 

223

1,100

June

647 

606 

605 

659 

697

675 

711 

791 

771 

721

681 

698 

767 

826 

869

870 

855 

849 

879 

904

802 

715 

722 

732 

761

697 

615 

603 

569 

521

July

493 

485 

504 

539 

536

503 

463 

451 

426 

394

380 

362 

352 

359 

361

347 

343 

343 

354 

372

372 

337 

304 

278 

271

249 

237 

228 

214 

205 

197

Minimum

167 

158 

152

88

147 

143 

133 

110 

105 

521 

197 

167 

187

105

Aug.

192 

184 

181 

178 

174

170 

167 

167 

175 

178

211 

238 

261 

255 

236

223 

229 

225 

223 

222

224 

220 

221 

222 

228

233

231 

231 

231 

228 

224

Mean

173 

163 

156

200

150 

146 

138 

124 

429 

727 

363 

212 

198

248

Sept.

223 

220 

216 

208 

207

206 

201 

199 

200 

199

" 198 

196 

199 

197 

194

196 

194 

194 

194 

193

192 

190 

196 

196 

194

190 

189 

189 

187 

188

Run-off In 

acre-feet

10,620 

9,670 

9,610

145, 200

9,250 

8,080 

8,460 

7,380 

26,350 

43,280 

22,330 

13,060 

11,790

179,900
BIG LOST RIVER BASIN 73

Mackay Reservoir near Mackay, Idaho

Location.- staff gage on head-gate tower of dam on Big Lost River, lat. 43°57', long. 113° 

 40', In sec. 12, T. 7 N., R. 23 E., 4 miles northwest of Mackay. Datum of gage is 

6,000 feet above mean sea level.

Records available.- January 1919 to September 1941.

Extremes.- Maximum contents observed during year, 40,980 acre-feet June 20 (gage height, 

rWTeet); minimum observed, §,801 acre-feet Oct. 1 (gage height, 26.60 feet).

1919-41: Maximum contents observed, 41,270 acre-feet May 30, 1938 (gage height, 

i.20 feet); no available storage during periods In each of the years 1919, 1920, 1924, 

Is26, 1929, 1931-35; minimum gage height observed, 6.3 feet Aug. 5, 1934.

Remarks - Reservoir Is formed by earth and rock fill dam, which was reconstructed 1917-18; 

storage Impounded by original dam not recorded. Capacity Is 38,400 acre-feet between

f

age heights 7.0 feet (bottom of outlet tunnel) and 62.0 feet (crest of spillway), 

lash boards about 1 foot high have been installed on crest of dam at times. Dead 

storage reported to be about 125 acre-feet. Water is used for irrigation of lands In 

Big Lost River Irrigation district. Considerable seepage around dam because of Its 

porous foundation, but the greater part of this water returns to Big Lost River between 

the reservoir and station below reservoir, near Mackay. Figures given herein represent 

usable contents, computed for midnight'on basis of once-daily readings of staff gage.

Cooperation.- Gage-height record and capacity table furnished by water-master for Big Lost 

River.

Contents, in acre-feet, miter year October 1940 to September 1941

DW

1 

2 

S

4 

6

6

7

8

9

10

11

12

13

14

15

16 

17 

18 

19 

80

21

88

83

84

86

86

87 

28 

89

SO

31

Oct.

6,964 

7,169 

7,360 

7,559 

7,819

8,060

8,278

3,534

6,758

8,916

9,040

9,201 

9,408

9,561 

9,618

9,631 

9,695 

9,772 

9,836 

9,946

10,020

10,080

10,120

10,190

10,230

10,350

10 ,500 

10,640 

10,800 

10,010

11,230

HOT.

11,690 

11,310 

11,970 

18,140 

12,360

18,600

18,310

13,100

13 ,330

13,540

13,720

13,970 

14,160

14 ,310 

14,540

14,730 

14,860 

15,130 

16,380 

16,600

15,760

16,950

16,160

16,320

16,490

16,700

16,960 

17,140 

17,310 

17,470

Dec.

17,640 

17,300 

17,940 

18,080 

13,300

18,640

18,680

IS ,880

19,070

19,830

19,330

19,510 

19,680

19,840 

20,040

20,230 

20,400 

20,560 

20,630 

20,790

20,950

81,100

81,310

21,490

81 ,600

21,740

21,390 

22,040 

22,250 

22,380

22,470

Jan.

88,610 

88,770 

28,330 

22,970 

83,100

23,830

83,370

83,480

23,560

23,640

23,710

83,330 

83 ,970

24,140 

84,310

24,460 

24,560 

34,650 

24,740 

24,870

25,010

85,120

85,810

85,310

85,430

85 ,560

25,650

26,740 

85,830 

25,890

25,940

Feb.

86,020 

86,130 

86,190 

86,260 

26,410

86,570

86,630

86,730

86 ,730

26,370

26,960

27,030 

87,080

87,130 

27,210

27 ,300 

27,370 

27,460 

87,550 

87 ,610

27,660

87,750

87,880

87,970

88,030

28,090

28,150 

28,210

-

Mar.

28,260 

88,340 

83,410 

28,430 

23,630

28,590

28,630

28,700

28,730

83,760

28,310

28,350 

83,920

29,000 

89,070

89,120 

29.16O 

29,200 

29,860 

89,320

89,380

89,470

29,550

29,600

29,660

29,690

89,740 

29,780 

89,820 

89,840

29,870

Apr.

29,920 

89,970 

30,030 

3X>,090 

30,140

30,180

30,210

30,240

30,830

30,330

30,350

30,360 

30,480

30,470 

30,530

30,570 

30,620 

30,660 

30,720 

30,770

30,310

30 ,850

30,330

30,900

30,930

30,950

30,970 

30,990 

31,030 

31,050

-

May

31,070 

31,100 

31,120 

31,140 

31,150

31,140

31,130

31,110

31,120

31,130

31,130

30,970 

30,910

30,930 

30,940

30,960 

31,180 

31,440 

31,540 

31,580

31,600

31,680

31,880

32,830

38,950

33,310

34,320 

35,630 

36,200 

36,740

37,380

June

37 ,330 

33,280 

36,580 

'33,920 

39,270

39,540

39,850

40,310

40,530

40,450

40,290

40,280 

40,420

40,570 

40,730

40,790 

40,870 

40,900 

40,920 

40,960

40,750

40,540

40,410

40,110

39,770

39,320

38,830 

33,440 

37,910 

37,490

~

July

37 ,340 

37,280 

37 ,360 

37,570 

37 ,640

37,640

37,510

37,330

37,140

36,850

36,500

36,050 

35,640

35,310 

35,010

34,710 

34,490 

34,400 

34 ,340 

34,320

34,240

34,010

33,660

33,270

32 ,390

32,370

31,790 

31,050 

30,270 

89,460

28,720

Aug.

28,020 

87,380 

86,750 

85 ,960 

85,040

24,150

23,530

28,570

81,810

20,410

19,310

20,060 

20,860

21,150 

21,270

21 ,460 

21,750 

21,890 

22,000 

22,210

22,380

22,490

28,550

28,600

22 ,650

22,690

28,730 

22,740 

22,720 

22,700

22,670

Sept.

22,670 

22,450 

22,360 

22,140 

22,140

22,140

22,140

22,150

22,200

22,260

22,400

22,530 

22,630

22,730 

22,660

22,610 

22,580 

22 ,570 

22,570 

22,560

22,530

22,550

22,660

22,810

22,990

23,150

23,290 

23,440 

23,630 

23,790

**

Monthly gage height and contents, water year October 1940 to September 1941

Date

Gage height 

(feetj

26.51

Contents 

(acre-feet)

6,754

23 

'

790

Change in contents 

during month 

( acre-feet )

+2 270
74 BIO LOST RIVER BASIN

Big Lost River below Mackay Reservoir, near Mackay, Idaho

Location.- Water-stage recorder, lat. 43°56', long. 113°38', In sec. 18, T. 7 N., R. 24 E., 

 450 reet downstream from Oleson Suspension Bridge, 1 mile downstream from head of Sharp 

ditch, li miles downstream from Mackay Reservoir, and 2i miles northwest of Mackay.

Records available.- December 1903 to August 1906, May 1912 to March 1915, and January 1919 

to septemoer JL941. April 1913 to March 1915 at site 1 mile downstream.

Average discharge.- 25 years (1904-5, 1912-14, 1919-41), 254 second-feet.

Extremes.- Maximum discharge during year, 958 second-feet June 24 (gage height, 3.39 feet); 

minimum, 58 second-feet Nov. 9; minimum gage height, 1.43 feet Nov. 9-11.

1903-6, 1912-15, 1919-41: Maximum discharge, 2,990 second-feet June 10, 1921 (gage 

height, 5.79 feet); minimum, 18 second-feet Nov. 1, 1934; minimum gage height, 1.23 

feet Nov. 5-8, 1926.

Remarks.- Records good. Sharp ditch Is only diversion between station and reservoir; 

many above reservoir. Flow regulated by Mackay Reservoir (see p. 73 ).

Cooperation.- Gage-height record furnished by watermaster for Big Lost River.

i 

Discharge, In aecond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24

25

26 

27 

28 

29

30 

31

Oct.

109 

77 

76 

75 

75

75 

77 

77 

80 

82

82 

82 

98 

109

121

133 

149 

162 

162

152

149 

142 

135 

135 

130

136 

136 

ISO 

70 

70 

72

NOT.

70 

70 

70 

68 

6O

60 

60 

60 

58 

60

60 

63 

63 

65 

63

63 

63 

63 

65 

68

68 

68 

68 

68 

68

70 

70 

72 

72

72

Dec.

72 

72 

75 

77 

80

80 

80 

80 

82 

82

85 

85 

85 

85

85

87 

85 

87 

87 

85

85 

85 

85

87 

87

90 

90 

90 

93 

96 

98

Jan.

98 

101 

101 

101 

104

104 

104 

104 

104 

104

104 

104 

104 

115

115

112 

109 

109 

112 

109

109 

109 

108

118 

112

112 

112 

112 

115 

115 

115

Feb.

115

115 

115 

115 

115

118 

118 

118 

118 

118

121 

121 

121 

121 

121

121 

121 

124 

124 

124

184 

124 

124 

124 

124

124 

124 

124

Month

Oct

Noi 

Dec

C

Jar 

Fet 

Ma5 

Apj 

Ha3 

Jui 

Ju] 

Auj 

Sei

11

alendar year 194K>... ...................

Fater year 1940-4

Mar.

127 

127 

124 

124 

127

127 

. 127 

127 

127 

127

127 

127 

127 

127 

127

127 

127 

127 

130 

130

130 

130 

1-30 

130 

130

130 

130 

127

127 

127 

127

Apr.

127 

127 

127 

127 

127

127 

127 

127 

124 

124

124

121 

121 

121

121

121 

121 

121 

121 

124

124 

121

124 

121 

121

121 

124 

124

121 

112

Secondfoot -day a

3.333 

1,966 

2,622

80,020

3,350 

3,376 

3,958 

3,693 

10,084 

21,535 

15,980 

10,715 

5,684

86,294

May

104 

104 

104 

104 

104

104 

106 

109 

109 

109

109 

170 

216 

288 

361

365 

417 

432 

432 

456

510 

550 

608 

624 

630

592 

555 

525

447 

389 

351

Maximum

152 

72 

98

835

115 

124 

130 

127 

630 

958 

636 

641 

307

958

June

338 

347 

413 

476 

486

500 

530 

592 

685 

685

652 

646 

685 

775 

805

835 

835 

865 

865 

895

865 

805 

805 

958 

925

925 

895 

865 

835

745

July

619 

525 

476 

442 

481

510 

510 

520 

520 

525

545 

570 

570 

565 

540

486 

466 

427 

398 

398

427 

456 

456 

476 

496

535 

580 

597 

630 

636 

608

Minimum

70 

58

72

54

98 

115 

124 

112 

104 

338 

398 

149 

118

58

Aug.

575 

565 

565 

602 

636

630 

630 

641 

630 

619

518 

355

176 

176 

179

162 

149 

165

179 

179

179 

186 

194 

194 

208

228 

231 

231 

248 

255 

255

Mean

IDS 

65.5 

84.6

219

108 

121 

128 

123 

525 

718 

515 

346 

189

236

Sept.

278 

298 

307 

264 

231

231 

231 

197 

165 

156

166 

162

172 

172 

186

212 

212 

212 

212 

212

212 

190 

166 

136 

124

124 

121 

121 

118

118

Run-off In 

acre-feet

6,610 

3,900 

5,200

158,700

6,640 

6,700 

7,860 

7,320 

20,000 

42,710 

31,700 

21,260 

11,270

171,200
BIQ LOST RIVER BASIN 75

Wann Spring Creek (east channel) near Mackay, Idaho

Location.- Water-stage recorder, lat. 43058', long. 113°45', in NEi sec. 5, T. 7 N.,

 R. 23 E., 700 feet upstream from confluence with west channel of Warm Spring Creek, 

and about 7i miles northwest of Mackay.

Records available.- May 1919 to September 1941. 

Average discharge.- 22 years, 27.9 second-feet.

Extremes.- Maximum discharge during year, 98 second-feet May 27 (gage height, 2.60 feet);

 minimum, 11 second-feet May 12 (gage height, 1.42 feet). .

1919-41: Maximum discharge, 225 second-feet June 15, 1922; minimum, 9 second-feet 

May 8, 9, 13, and 14, 1919, and May 18-21, 1920.

Remarks.- Records good. Practically all natural flow diverted during irrigation season.

 Plow during summer represents return water from irrigation. The sum of the combined 

discharge of east and west channels of Warm Spring Creek and the combined discharge of 

east and west channels of Big Lost River, near Mackay, Idaho, represents practically 

the entire surface flow of Big Lost River which enters Mackay Reservoir.

Cooperation.- Qage-helght record furnished by water-master for Big Lost River.

Rating table, water year 1940-41 (gage height, in feet, and discharge, in second-feet) 

(Shifting-control methods used October 1 to Jan- 7, Sept. 15-30)

1.4 11 2.2 62 

1.6 13 2.4 79 

1.8 SO 2.6 98 

2.0 45

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

5

7 

S 

9 

10

11 

IS 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

SO 

31

Oo.t.

22 

22 

23 

21

21

21 

21 

20 

20 

20

20 

21 

20 

20 

21

21 

21 

21 

21 

21

21 

20 

21 

20 

20

21 

21 

20 

20 

19 

20

NOT.

20 

20 

19 

19 

19

IS 

IS 

18 

18 

16

18 

18 

18 

IS 

IS

IS 

18 

IS 

18 

IS

18 

18 

17 

17 

17

17 

17 

17 

17

Dec.

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17

IT 

17 

17 

17 

18

18 

18 

17 

17 

17 

17

Jan.

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17 

17

Feb.

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

16 

17

Month

Oet 

No\ 

Dec

C

Jar 

Pel 

Hai 

Api 

Maj 

Jur 

Ju3 

Aug 

Sei

1

alendar year 194d. ....................

y..... .................................

Fater year 1940-4.

Mar.

17 

17 

17 

17 

16

16 

16 

16 

16 

16

16 

16 

16 

16 

16

16 

16 

16 

16 

16

16 

16 

16 

16 

15

15 

15 

15 

15 

15 

15

Apr.

15 

15 

15 

15 

16

15 

15 

15 

15 

15

15 

14 

14 

14 

14

14 

14 

14 

13 

14

14 

14 

13 

13 

14

14 

14 

14 

14 

12

Secondfoot-days

641 

539 

530

7,069

527 

475 

493 

426 

1,001 

1,822 

971 

741 

755

3,921

May

12

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

13 

17 

21

22 

24 

28

35 

33

30 

32 

39 

57 

74

83 

96 

32 

63 

55 

53

Maximum

23 

20 

IS

55

17 

17 

17 

15 

96 

79 

43 

28 

28

96

June

51 

46

46 

52 

57

55 

61 

71 

66 

56

51 

53 

62

71 

74

75 

74 

73 

78 

79

67 

60 

62 

62 

66

60

51 

51 

50 

42

July

39 

38 

40 

43 

43

41 

37 

36 

34 

32

SO 

30 

29 

30 

SO

29 

29 

SO

33 

35

37 

32 

28 

26 

25

24 

25 

23 

22 

21 

20

Aug.

20 

19 

19 

19 

19

19 

19 

 19 

20 

20

24 

23 

29 

28 

26

24 

25 

25 

24 

24

26 

26 

26 

26 

26

27 

27 

27 

27 

28 

27

Minimum Jfe&n

19 20.7 

17 18.0 

17 17.1

10 19.3

17 17.0 

16 17.0 

15 15.9 

12 14.2 

12 32.3 

4S 60.7 

20 31.3 

19 23.9 

23 28.2

12 24.4

Sept.

28 

27 

27 

26 

27

27 

26 

26 

26 

26

27 

26 

26 

26 

26

26 

26 

25 

25 

24

24 

23 

24 

24 

23

23 

23 

23 

23 

23

Run-off In 

acre-feet

1,270 

1,070 

1,060

14,010

1,060 

942 

978 

846 

1,990 

3,610 

1,030 

1,470 

1,600

17,700

461677 O - 42 - 6
76 BIG LOST RIVER BASIN

Warm Spring Creek (west channel) near Mackay, Idaho

Location.- Water-stage recorder, lat. 43°58', long. 113°45', in NEi sec. 5, T. 7 N., 

R. 23 £., 500 feet upstream from confluence with east channel of Warm Spring Creek 

and about 7i miles northwest of Mackay.

Records available.- May 1919 to September 1941. 

Average discharge.- 22 years, 90.5 second-feet.

Extremes.- Maximum discharge during year, 185 second-feet May 27 (gage height, 2.15 feet); 

""minimum, 59 second-feet May 11 (gage height, 1.17 feet).

1919-41: Maximum discharge, 600 second-feet (estimated) Aug. 11, 1936 (gage height,

4.42 feet, datum then in use, from high-water mark); minimum, 49 second-feet Apr. 27,

1935 (gage height, 0.62 foot, datum then in use).

Remarks.- Records good except those for period of backwater from Mackay Reservoir, which 

are fair. Flow during summer represents return flow from irrigation. The sum of the 

combined discharge of east and west channels of Warm Spring Creek and the combined 

discharge of east and west channels of Big Lost River, near Mackay, Idaho, represents 

practically the entire surface flow of Big Lost River which enters Mackay Reservoir.

Cooperation.- Gage-height record furnished by water-master for Big Lost River.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

97 

99 

99 

96 

95

95 

96 

95 

95 

95

95 

96 

97 

97 

97

96 

96 

96 

97 

97

97 

97 

96 

96 

96

100 

99 

97 

95 

94 

94

Nov.

94 

94 

92 

91 

91

92 

94 

94 

94 

94

94 

94 

92 

92 

94

94 

94 

94 

94 

92

92 

92 

92 

92 

92

92 

92 

94 

94 

92

Dec.

92 

92 

92 

92 

92

92 

92 

a91 

h9O 

a9o

a9o 

a91 

91 

92 

90

90 

91 

88 

88 

* 88

90 

90 

90 

91 

91

90 

91 

90 

90 

90 

91

Jan.

90 

91 

91 

91 

91

91 

91 

91 

91 

91

91 

91 

91 

90 

90

90 

90 

90 

90 

90

88 

88 

88 

88 

88

88 

88 

87 

87 

87 

S7

Feb.

88 

8S 

SS 

87 

88

S7 

87 

S7 

SS 

88

83 

88 

87 

87 

88

88 

88 

87 

87 

86

86 

86 

86 

87 

87

87 

86 

87

Month

Oot 

NOM 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

8ep

fl

alendar year 19 10. .....................

TISt....................................

ater year 1940-'

Mar.

SS 

SS 

87 

87 

S6

84 

84 

S6 

86 

86

86 

86 

84 

84 

84

84 

86 

86 

87 

87

86 

86 

84 

84 

84

84 

83 

83 

83 

83 

83

Apr.

83 

83 

82 

SO 

83

79 

78 

a78 

a79 

80

78 

74 

74 

73 

70

72 

72 

7O 

69 

69

72 

73 

a73 

a73 

a73

73 

73 

73 

69 

64

Secondfoot-days

2,987 

2,788 

2,808

30,578

2,776 

2,442 

2,639 

2,242 

2,897 

3,980 

2,951 

2,671 

2,724

33,905

May

64 

64 

62 

61 

62

61 

62 

63 

62 

6O

59 

60 

a66 

72 

79

80 

86 

95 

105 

100

97 

97 

105 

133 

153

163 

179 

160 

137 

126 

124

Maximum

100 

94 

92

133

91 

88 

88 

83 

179 

150 

110 

103 

101

179

June

123 

117 

119 

127 

130

125 

130 

140 

140 

135

130 

130 

140 

145 

150

150 

146 

146 

150 

150

140 

130 

130 

130 

135

127 

119 

123 

117 

106

July

104 

104 

105 

110 

109

105

lol

100 

97 

94

94 

91 

91 

94 

94

92 

94 

97 

103 

105

109 

100 

92 

88 

96

87 

84 

82 

78 

77 

74

Minimum

94 

91 

88

53

87 

86 

83 

64 

59 

106 

74 

70 

87

59

Aug.

75 

75 

75 

75 

73

72 

70 

72 

75 

77

90 

96 

90 

87 

84

83 

87 

87 

88 

90

91 

SS 

88 

88 

95

97 

97 

101 

103 

101 

101

Mean

96.4 

92.9 

90.6

83.5

89.5 

87.2 

85.1 

74.7 

93.5 

133 

95.2 

86.2 

9O.8

92. 9

Sept.

101 

100 

97 

95 

95

94 

91 

90 

92 

91

91 

91 

90 

88 

86

90 

90 

90 

88 

88

88 

87 

91 

90 

90

88 

88 

88 

87 

87

Run- off In 

acre-feet

5,920 

5,530 

5,570

60,650

5,510 

4,840 

5,230 

4,45O 

5,750 

7,890 

5,850 

5,300 

5,400

67,240

a No gage-height record; discharge interpolated, 

h Computed from staff-gage reading.

Rote-- Backwater from Mackay Reservoir June 5-25; discharge computed on basis of discharge measurements, gage-height record, reservoir record, and records for nearby stations.
BIO LOST RIVER BASIN 77

Sharp ditch near Mackay, Idaho

Location.- Water-stage recorder and sharp-crested weir, lat. 43°57', long. 113°39', in 

sec. 7, T. 7 N., R. 24 E., 1,600 feet downstream from head of ditch, three-quarters 

of a mile downstream from Mackay Reservoir, and 3i miles northwest of Mackay.

Records available.- June 1912 to October 1914, March 1919 to September 1941.

Extremes.- Maximum discharge during year, 26 second-feet June 23 (gage height, 1.08 feet); 

no flow reported Apr. 18-26.

1912-14, 1919-41: Maximum discharge observed, 42 second-feet June 23, 1921; no 

flow at times.

Remarks.- Records good except those below 5 second-feet, which are fair. Sharp ditch 

diverts from east side of Big Lost River In SEi sec. 12, T. 7 N., R. 23 E., half a 

mile below Mackay Reservoir and 1 mile above station on Big Lost River below Mackay 

Reservoir, near Mackay. Water used for irrigation northwest of Mackay and above 

Streeter ditch. Hlntze ditch diverts from Sharp ditch above station and, according to 

water-master, carried 294 acre-feet during the year (49 in October, 25 in May, 67 in 

June, 24 in July, 69 in August, and 60 in September).

Cooperation.- Qage-height record furnished by watermaster from Big Lost River.

Rating table, water year 1940-41 (gage height, In feet, and 

discharge. In second-feet)

0.0 

.1 

.2 

.3

0.0 

0.6 i.e

3.4

0.4 

.5 

.6 

.7

5.4

7.6

10

13

O.S 16

.9 19

1.0 22

1.1 26

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

5.4 

3.1 

3.1 

2.9 

2.9

2.8 

2.6 

2.6 

2.9 

3.1

3.4 

3.4

5.0 

6.0 

6.7

7.6 

9.0 

9.3 

9.5 

9.5

9.8 

9.3 

8.6 

6.6 

S.6

9.0 

8.3 

8.1 

4.8 

4.6 

4.6

Nov.

4.8 

4.8 

4.S 

4.S 

4.8

5.0 

6.0 

5.0

 aS.O

> 

al.3

Dec.

»

> al.3

hi. 3 

al.3 

al.3 

al.3 

al.3

, a. 4

i

Jan.

> aO.4

' h.4

> a. 4 

/ ,

Feb.

> 

aO.4

t 

~\

 a. 5

>

Month

Oct 

Hoi 

Dec

C

Jan 

Pet 

Mai 

Apr 

Maj 

Jur 

Ju3 

Au£ 

Sei

H

alendar year 194C ......................

ater year 1940-41

liar.

aO.5 

a. 5 

a. 5 

a. 5 

a. 5

a. 5 

h.5 

a. 5 

a. 6 

.6

.6 

.6 

.6 

.6 

.6

.6

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6 

.6

Apr.

0.6 

.6 

.6 

.6 

.6

h.6 

a. 6 

a. 5 

a. 5 

.4

.4

.5 

a. 5 

a. 5 

a. 5

a. 5 

a. 5 

0 

0 

0

0 

0 

0 

0 

0

a. 6

a. 6 

a. 6 

a. 6 

a. 6

Secondfoot-days

1S5.5 

145.3 

25.9

2,374.2

12.4 

12.5 

17.8 

11.3 

427 

575 

516 

384.2 

249.1

2,562.0

May

a!6 

al6 

h!6 

a!6 

a!6

a!6 

a!6 

a!3 

alS 

13

13 

11 

10 

10 

9.8

9.0 

S.I 

8.1 

11 

15

16 

16 

16 

16 

16

16 

16 

16 

15 

13 

15

Maximum

9.8

22

.6 

.6 

16 

25 

21 

19 

10

25

June

16 

16 

16 

16 

16

16 

16 

17 

17 

17

16 

16 

16 

18 

16

IS 

19 

20 

20 

20

22 

24 

24 

25 

25

25 

24 

22 

21 

19

July

16 

19 

20 

21 

20

20 

20 

20 

19 

19

19 

19 

IS 

17 

17

17 

15 

13 

11 

11

13 

14 

14 

14 

14

14 

14 

15 

17 

18 

18

Minimum

2.8

.4

.5 

0 

8.1 

16 

11 

7.2 

5.2

0

Aug.

17 

16 

16 

18 

19

18 

18 

18 

17 

17

16 

16 

13 

10 

7.6

7.2 

7.2 

7.2 

7.2 

9.0

9.8 

10 

10 

10 

10

10 

10 

10 

10 

10 

10

Mean

5.98 

4.84 

.84

6.49

.40 

.45 

.57 

.38 

13.8 

19.2 

16.6 

12.4 

8.30

7.02

Sept.

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

9.S

10 

9.8 

10 

8.6 

6.7

5.6 

5.6 

5.6 

5.4 

5.4

5.4 

5.4 

5.4 

5.2 

5.2

Run-off In 

acre-feet

368 

288 

51

4,710

25 

25 

35 

22 

847 

1,140 

1,020 

762 

494

5,080

a No gage-height record; discharge comnuted on basis of headgate changes and other data furnished 

by watermaster.

h Computed from staff-gage readings.
78 PORTNEUF RIVER BASIN

Portneuf River at Topaz, Idaho

Location.- Staff gage, lat. 42°38', long. 112°06', in sec. 23, T. 93., R. 37 E., at 

dregon Short Line R. R. bridge, a quarter of a mile west of Topaz, li miles upstream 

from diversion dam of Portneuf-Marsh Valley Canal Co., and 6 miles southeast of 

McCarmon.

Records available.- January 1913 to September 1915, July 1919 to September 1941. 

Average discharge.- 22 years (1913-14, 1919-22, 1923-41), 190 second-feet.

Extremes.- Maximum discharge observed during year, 249 second-feet May 14-16; maximum 

gage height, 1.97 feet May 16; minimum discharge observed, 85 second-feet Sept. 4-6 

Tgage height, 0.94 foot).

1913-15, 1919-41: Maximum discharge observed, 902 second-feet Apr. 3, 1913 (gage 

height, 6.1 feet, site and datum then In use); minimum observed, 65 second-feet Oct. 

9, 1934 (gage height, 0.81 foot).

Remarks.- Records good. Gage read once daily. Flow regulated by Portneuf-sHta-Bh Valley 

Canal Co.'s reservoir near Chesterfield. Many ranch diversions above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

108 

102 

102 

102 

104

104 

104 

104 

104 

102

102 

100 

102 

108 

100

102 

100 

99 

99 

99

99

99 

100 

102 

102

104 

108 

111 

108 

10S 

111

NOT.

115 

115 

115 

115 

113

115 

113 

115 

113 

115

115 

116 

115 

113 

115

115 

115 

124 

117 

117

117 

117 

119 

117 

117

117 

121 

122 

124 

130

Dec.

126 

126 

124 

122 

124

124 

124 

122 

121 

121

117 

117 

113 

113 

111

109 

117 

117 

117 

119

119 

119 

122 

140 

130

124 

157 

128 

128 

124 

124

Jan.

121 

115 

106 

102 

122

122 

119 

121 

121 

117

117 

109 

113. 

117 

122

121 

119 

116

115 lie

117 

119 

119 

119 

119

119 

117 

119 

119 

117 

115

Feb.

117 

130 

115 

113 

113

115 

117 

119 

119 

119

128 

157 

136 

126 

126

128 

122 

117 

119 

122

124 

124 

134 

142 

151

134 

134 

132

Month

Oct 

Hoi

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

Au« 

Sei

11

Si::::::::::::::::::::::::::::::::::::

ater year 1940-4

liar.

140 

186 

186 

176 

166

160 

157 

153 

164 

149

151 

119 

149 

130 

128

134 

155 

186 

202 

218

214 

202 

188 

184 

172

162 

166 

170 

174 

1S2 

176

Apr.

168 

16S 

170 

164 

168

172 

160 

151 

147 

157

159 

159 

160 

168 

162

162 

157 

160 

160 

147

147 

145 

149 

151 

151

153 

180 

178 

186 

196

Secondroot-days

3,193 

3,506 

3,799

48,338

3,628 

3,533 

5,199 

4,355 

6,358 

4,952 

5,908 

3,118 

2,861

50,910

May

204 

222 

226 

226 

228

228 

228 

208 

208 

214

216 

230 

240 

249 

249

249 

240 

222 

220 

204

160 

169 

166 

166 

166

166 

178 

176 

176 

176 

160

Maximum

111 

130 

167

260

128 

157 

218 

196 

249 

202 

210 

168 

102

249

June

159 

159 

146 

147 

145

143 

149 

145 

147 

147

151 

143 

124 

117 

130

149 

172 

172 

182 

190

200 

194 

188 

188 

192

190 

190 

194 

198 

202

July

210 

206 

208 

198 

206

194 

196 

180 

176 

172

174 

178 

196 

196 

200

198 

198 

198 

200 

196

190 

192 

188 

188 

188

184 

184 

186 

182 

178 

174

Minimum

99 

113 

109

SI

102 

113 

119 

145 

159 

117 

172 

89 

85

85

Aug.

16S 

155 

147 

128 

121

99

102

It

95

99 

99 

97 

96 

89

89 

89 

89 

89 

89

89 

89 

89

89 

S9

92 

92 

89 

89 

89 

89

Mean

103 

117 

123

132

117 

126 

, 168 

168 

205 

165 

191 

101 

95.4

139

Sept.

89 

89 

39 

86 

92

86 

89 

89 

89 

92

96 

99 

100 

9» 

99

102 

97 

95 

97 

99

99 

99 

99 

100 

99

99 

100 

99 

97 

100

Run-off In 

acre-feet

6,330 

6,950 

7,540

95,880

7,200 

7,010 

10,310 

9,650 

12,610 

9,820 

11,720 

6,180 

5,670

101,000
PORTNEUF RIVER BASIN 79

Portneuf River at Pocatello, Idaho

Location.- Water-stage recorder, lat. 42°52', long. 112°28', In sec. 27, T. 6 S., R. 34 

E., at highway bridge at foot of Carson Street, In west end of Pocatello.

Records available.- August 1911 to September 1941. May 1897 to October 1899 at site 1 

mile upstream.

Average discharge.- 28 years, (1912-16, 1917-41), 247 second-feet.

Extremes.- Maximum discharge during year, 654 second-feet Mar. 4 (gage height, 5.70 feet); 

minimum discharge recorded, 48 second-feet July 16; minimum gage height recorded, 2.58 

feet June 28.

1897-99, 1911-41: Maximum discharge, more than 2,000 second-feet sometime during 

period May 13 to June 14, 1917; minimum, 14 second-feet July 4-11, 13, 17, 18, 1898.

Remarks.- Records good except those for November to January, which are fair. Many 

dlversions above station for Irrigation. Flow regulated by storage reservoir near 

Chesterfield.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2

3

4 

5

6 

7 

8 

9 

10

11 

12 

15 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24

26

26 

27 

28 

29 

30 

31

Oct.

113 

116 

113 

116 

111

104 

102 

101 

104 

102

102 

102 

104 

101 

93

96 

97 

97 

96 

94

94 

93 

93 

90 

89

98

110 

121 

110 

106 

105

NOT.

107 

104 

100 

97 

101

98 

98 

98

97 

97

100 

, 113 

10S 

126 

130

170 

193 

199 

202

201

199

197 

191 

186 

182

189 

189 

189

195 

206

Dec.

218 

210 

204 

201 

201

202 

202 

201 

201 

197

«.

'*'

V b!76

212 

197

206 

214 

197 

223 

270

246 

240 

250 

250 

237 

£33

Jan.

216 

> b!75

' b200

206

214 

222 

191 

189 

188

191 

191 

197 

197 

»197

204 

201 

193 

188 

189 

191

Feb.

191 

223 

216 

220 

193

212 

201 

202 

214 

210

246 

311 

364 

384 

395

353 

300 

290 

300 

322

364 

374 

395 

427 

460

460 

460 

449

Month

Oct 

No\ 

Dec

C

Jar 

Pet 

Jfal 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

11

alendar year 19< 0..... .................

TISt..... ...............................

ater year 1940-4

liar.

427 

493 

526 

630 

684

515 

471 

449 

436 

416

384 

353 

332 

311 

300

300 

311 

364 

395 

416

427 

406 

406 

416 

406

384 

396 

395 

406 

416 

427

Apr.

427 

427 

406 

406 

416

416 

396 

374 

374 

395

427 

427 

438 

460 

460

449 

460 

460 

449 

438

427 

416 

416 

427 

438

449 

471 

438 

416 

416

Secondfoot -day s

3,170 

4,462 

6,423

58,960

6,066 

8,736 

12,899 

12,818 

8,899 

3,327 

2,240 

3,073 

3,181

75,293

May

416 

416 

427 

438 

427

406 

396 

374 

364 

342

353 

364 

384 

384 

384

353 

300 

260 

250 

220

186 

159 

138 

127 

129

140 

166 

164 

155 

143 

135

Maximum

121 

206 

270

449

222 

460 

630 

471 

438 

165 

93 

130 

121

630

June

132 

130 

119 

107 

124

119 

129 

146 

162 

155

124 

137 

134 

126 

135

137 

124 

124 

111 

107

102 

97 

86 

SO 

a74

a68 

a63 

h67 

61 

69

July

80 

70 

70 

71 

69

69 

65 

69 

63 

58

' 68 

59 

59 

62 

61

64 

71 

71 

79 

76

81 

81 

SI 

80 

80

90 

93 

69 

81

75 

76

Minimum

89

97

25

191 

300 

374 

127 

57 

64 

71 

86

54

Aug.

77 

76 

80 

79 

75

76 

71 

82 

102 

100

107 

102 

108 

108 

102

100 

114 

130 

110 

105

102 

98 

107 

104 

102

104 

108 

107 

110 

114 

113

lie an

102 

149 

207

161

196 

312 

416 

427 

287 

111 

72.3 

106* 99 1 

206

Sept.

108 

108 

105 

101 

110

114 

118 

121 

119 

107

108 

110 

100 

102 

108

110 

105 

100 

96 

90

86

S9 

100 

105 

118

116 

113 

107 

104 

104

Run-off In 

acre-feet

3,290 

8,850 

12,740

117,000

12,030 

17,330 

26,580 

26,420 

17,660 

6,600 

4,440 

6,100 

6,310

149,300

* Winter discharge measurement made on this day. 

a No gage-height record; discharge Interpolated, 

b Stage-discharge relation affected by Ice. 

h Computed from staff-gage readings.
80 PORTNEUF RIVER BASIN 

Birch Creek near Downey, Idaho

Location.- Staff-gage and wooden control, lat. 42°21', long. 112°15', In SEi sec. 28, 

T. liJ S., R. 36 E., Just downstream from point where flow that Is diverted through 

Malad power plant re-enters stream, 8.6 miles southwest of Downey, and 10 miles 

upstream from confluence with Marsh Creek.

Records avallable.- September 1937 to September 1941. 

it miles upstream.

October 1911 to August 1914 at site

Extremes.- Maximum discharge observed during year, 44 second-feet July 20 (gage height, 

1.34 reet); minimum observed, 5.2 second-feet Nov. 27 and several times during December, 

January, and February (gage height, 0.72 foot).

1911-14, 1937-41: Maximum discharge observed, 95 second-feet July 15, 1938, by 

velocity-area method on basis of floodmark at measuring section; minimum observed, 

3.4 second-feet Dec. 24-27, 1913.

Remarks.- Records good. Gage read twice dally. Malad power plant, which has a small

reservoir above station, may cause slight diurnal fluctuations. Water is diverted from 

Birch Creek half a mile below station and carried by trans-mountaln canal to Devil 

Creek In Bear River Basin.

Cooperation.- Gage-height record furnished by Western States Utility Co. In connection 

witn a Federal Power Commission project.

Rating table, water year 1940-41 (gage height. In feet, and discharge, In second-feet) 

(Shifting-control method used Sept. 2-29)

.70 

.73 

.76 

.79 

.83

5.0 

5.4 

5.8 

6.4 

7.1

.87

.91

.95

1.00

1.05

7.9

9.0

10

12

15

1.10

1.15

1.20

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

6.5 

6.5 

6.7 

6.5 

6.5

6.5 

6.5 

6.5 

6.5 

6.5

6.5 

6.4 

6.5 

6.5 

6.4

6.4 

6.5 

6.5 

6.5 

6.4

6.5 

5.5 

6.5 

6.5 

6.5

7.9 

6.9 

6.9 

7.1 

6.9 

6.7

Hcv.

6.9 

6.9 

6.9 

6.9 

7.1

6.9 

6.9 

6.9 

6.9 

6.5

6.5 

6.5 

5.8 

6.0 

6.0

5.S 

5.8 

5.S 

5.S 

5.8

5.S 

5.S 

5.S 

5.8 

5.8

5.5 

5.4 

5.5 

5.5 

5.5

Dec.

5.5 

5.5 

5.5 

5.5 

5.4

5.4 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.2 

5.2 

5.2

5.2 

5.2 

5.2 

5.2 

5.2

5.2 

5.5 

5.5 

5.5 

5.5

5.5 

5.7 

5.5 

5.5 

5.5 

5.5

Jan.

5.5 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.2 

5.2

5.4 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.2

5.2 

5.4 

5.2 

5.4 

5.4

5.4 

5.4 

5.4 

5.2 

5.2 

5.4

Feb.

5.4 

5.4 

5.4 

5.4 

5.4

' 5.4 

5.4 

5.2 

5.4 

5.4

5.5 

5.5 

5.4 

5.4 

5.2

5.2 

5.4 

5.2 

5.4 

5.4

5.4 

5.4 

5.4 

5.5 

5.4

5.4 

5.4 

5.4

Month

Oct 

NOM 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Ju3 

Aug 

Sei

1

alendar year 194

ater year 1940-

Mar.

5.8 

5.7 

5.7 

5.5 

5.5

5.5 

5.5 

5.5 

5.5 

5.5

5.5 

5.5 

5.5 

5.5 

5.5

5.5 

5.6 

5.8 

5.8 

5.8

5.8 

5.8 

5.S 

5.8 

5.8

5.S 

5.8 

5.S 

6.0 

6.2 

6.2

Apr.

6.4 

6.4 

6.5 

6.5 

6.5

6.5 

6.5 

6.5 

6.7 

7.3

7.1 

6.9 

7.3 

7.5 

7.7

7.7 

7.7 

7.7 

7.5 

7.7

7.7 

8.2 

S.2 

8.4 

8.7

9.0 

9.6

n

11 

11

Secondfoot-days

204.7 

185.0 

167.2

2,633.9

166.1 

150.7 

176.4 

233.4 

471 

332 

292.9 

233.5 

206.3

2,819.2

May

11 

12 

12 

14 

14

16 

14 

14 

14 

16

16 

17 

17 

19 

US

US

19 

18 

16 

16

14 

14 

14 

14 

14

16 

14 

15 

13 

13 

13

Maximum

7.9 

7.1 

5.7

13

5.5 

5.5 

6.2 

11 

22 

12 

26 

7.7 

7.5

26

June

12 

12 

12 

12 

11

11 

12 

11 

11 

11

11

11 

10

U 11

11 11 

11 

11 

11

11 

11 

11 

11 

n

u 11 11

10 

10

July

10 

10 

11 

10 

10

10 

9.9 

9.9 

9.9 

9.9

7.5 

9.9 

9.9 

9.9 

9.9

8.4 

7.3 

7.3 

7.3 

26

8.7 

8.7 

8.2 

8.2 

8.4

S.2 

7.9 

7.7 

7.7 

7.7 

7.7

Minimum

6.4 

5.4 

5.2

5.2

5.2 

5.2 

5.5 

6.4 

11 

10 

7.3 

7.3 

6.5

5.2

Aug.

7.7 

7.7 

7.7 

7.3 

7.3

7.3 

7.3 

7.3 

7.3 

7.7

7.7 

7.7 

7.7 

7.5 

7.5

7.3 

7.7 

7.7 

7.7 

7.7

7.5 

7.3 

7.7 

7.5 

7.5

7.7 

7.7 

7.5 

7.5 

7.3 

7.5

Mean

6.60 

6.17 

5.39

7.33

5.36 

5.38 

5.69 

7.78 

15.2 

11.1 

9.45 

7.53 

6.88

7.72

Sept.

7.5 

7.2 

7.3 

7.3 

7.1

7.3 

7.3 

7.1 

6.9 

6.9

7.1 

6.9

6.7 

6.7 

6.7

6.7 

6.7 

6.7 

6.5 

6.5

6.7 

6.7 

6.9 

6.9 

6.7

6.7 

6.7 

6.7 

6.7 

6.5

Run-off in 

acre-feet

406 

367 

332

5,330

329 

299 

350 

463 

934 

659 

581 

463 

409

5,590
TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK 81

North Side Minldoka canal near Mlnldoka, Idaho

Location.- Water-stage recorder, lat. 42°40', long. 113°29', In sec. 1, T. 9 S., R. 25

 k!., 600 feet downstream from head gates at Mlnidoka Dam and 6 miles south of Mlnldoka.

Records available.- May 1909 to September 1941.

Extremes.- Maximum discharge during year, 1,610 second-feet July 10-14, 23; maximum

 gage height, 9.65 feet July 13; no flow during winter.

1909-41: Maximum discharge, 1,680 second-feet July 14, 21-31, Aug. 1, 1938; 

maximum gage height, 9.90 feet July 11, 1932; no flow during winters.

Remarks.- Records excellent. Flow controlled by head gates. Water used for Irrigation 

or 62,000 acres of land under North Side Mlnldoka project.

Cooperation.- Gage-height record furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Cay

1 

Z 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

SB

26 

27 

28 

29 

50 

31

Oot.

323 

323 

322 

326 

325

331 

330 

330 

326 

326

330 

339 

338 

341 

341

341 

341

341 

342 

366

385 

395 

425 

427 

427

434 

425 

427 

429 

425 

427

Nov.

292 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec. Jan. Feb.

Month

Oot 

Noil 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aue 

8ep

U

alendar year 19410 ......................

ater year 1940-4

Mar. Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

88

142 

143 

144 

205 

241

304 

417 

462 

56S 

670

670 

666 

728 

S62 

1,150

Secondfoot-days

11,310 

292 

0

222,880

0 

0 

0 

7,460 

45,540 

37,139 

47,790 

39,960 

23,559

213,050

May

1,180 

1,220 

1,300 

1,340 

1,340

1,390 

1,440 

1,440 

1,440 

1,430

1,440 

1,500 

1,560 

1,570 

1,580

1,530 

1,570 

1,560 

1,560 

1,560

1,560 

1,550 

1,550 

1,560 

1,550

1,540 

1,550 

1,530 

1,480 

1,430 

1,300

Maximum

434 

292 

0

1,660

0 

0 

0 

1,150 

1,530 

1,560 

1,610 

1,44O 

1,230

1,610

June

1,220 

1,230 

1,290 

1,290 

1,290

1,290 

1,130 

987 

917 

828

830 

937 

1,110 

1,160 

1,150

1,180 

1,250 

1,340 

1,320 

1,250

1,200 

1,200 

1,230 

1,480 

1,450

1,470 

1,550 

1,56O 

1,480 

1,430

July

1,480 

1,510 

1,530 

1,530 

1,530

1,560 

1,580 

1,580 

1,580 

1,610

1,610 

1,610 

1,610 

1,610 

1,600

1,600 

1,600 

1,600 

1,600 

1,600

1,600 

1,600 

1,610 

1,600 

1,540

1,490 

1,44O 

1,390 

1,340 

1,310 

1,340

Minimum

322 

0 

0

0

0 

0 

0 

0 

1,120 

823 

1,310 

1,040 

421

0

Aug.

1,340 

1,290 

1,210 

1,250 

1,230

1,320 

1,340 

1,400 

1,44O 

1,440

1,340 

1,230 

1,200 

1,140 

1,030

1,040 

1,040 

1,100 

1,220 

1,400

1,440 

1,440 

1,410 

1,370 

1,360

1,360 

1,320 

1,320 

1,320 

1,290 

1,230

Mean

365 

9.7 

0

609

0 

0 

0 

249 

1,469 

1,238 

1,542 

1,289 

785

584

Sept.

1,230 

1,230 

1,160 

1,050 

939

917 

932 

932 

930 

926

879 

835 

774 

730 

730

726 

720 

716 

764 

797

776 

768 

694 

530 

578

536 

432 

434 

421 

423

Run- off In 

acre -feet

22,430 

579 

0

442,100

0 

0 

0 

14,800 

90,330 

73,660 

94,790 

79,260 

46,730

422,600
82 TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK

South Side Mlnldoka canal near Mlnldoka, Idaho

Location.- Water-stage recorder, lat. 42°40', long. 113°29', In sec. 12, T. 98., R. 

25 £., 300 yards downstream from head gates at Mlnldoka Dam and 6 miles south of 

Mlnldoka.

Records available.- April 1909 to September 1941.

Extremes.- Maximum discharge during year, 1,300 second-feet Aug. 26; maximum gage 

height, 5.92 feet July 16; no flow during winter.

1909-41: Kaxlmum discharge, 1,350 second-feet July 19, 20, 23-25, 1938, July 

9-11, 1940; no flow during winters.

Remarks.- Records excellent. Flow controlled by head gates. Water diverted from 

 snake River at Mlnldoka Dam for Irrigation of 54,000 acres of land under South 

Side Mlnldoka project.

Cooperation.- Gage-height record and results of 4 discharge measurements furnished by 

Bureau or Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

S

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

SI

Oct.

171 

181 

176 

174 

167

180 

178 

178 

175 

177

157 

158 

163 

193 

212

257 

253 

255 

267 

257

267 

258 

267 

257 

257

266 

253 255' 

260 

193 

TT66

NOT.

164 

163 

161 

160 

161

163 

167 

168 

60 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0

o

0 

0 

0

Dec. Jan. Feb.

Month

Oot 

Not 

Dec

C

Jar 

Pel 

Hai 

Api 

Maj 

Jur 

Ju] 

Aug 

Sej

I

alendar year IS 4 0 ......................

rater year 1940-4

liar. Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

117 

269 

317 

319

530 

324 

304 

293 

295

Secondfoot-days

6,576 

1,367 

0

167,391

0 

0 

0 

2,768 

30,985 

25,785 

37, B75 

34,901 

21,'564

161,621

May

295 

588 

487 

555 

600

600 

652 

741 

S26 

S72

92S 

1,070 

1,250 

1,280 

1,280

1,290 

1,290 

1,270 

1,240 

1,220

1,220 

1,250 

1,260 

1,250 

1,240

1,220 

1,180 

1,150 

1,110 

1,010 

961

Maximum

266 

168 

0

1,350

0 

0 

0 

550 

1,290 

1,200 

1,290 

1,500 

1,270

1,500

June

860 

904 

837 

S75 

863

872 

697 

412 

397 

412

412 

467 

625 

728 

755

804 

886 

998 

1,040 

1,040

989 

992 

1,050 

1,130 

1,170

1,150 

1,200 

1,200 

1,010 

1,010

July

995 

1,020 

1,100 

1,130 

1,130

1,130 

1,190 

1,290 

1,290 

1,290

1,290 

1,290 

1,290 

1,290 

1,290

1,290 

1,290 

1,290 

1,280 

1,240

1,250 

1,240 

1,240 

1,260 

1,270

1,270 

1,180 

1,130 

1,110 

1,110 

1,110

Minimum

157 

0 

0

0

0 

0 

0 

0 

295 

397 

995 

779 

820

0

Aug.

1,110 

1,100 

1,090 

1,090 

1,090

1,160 

1,160 

1,200 

1,220 

1,160

1,050 

952 

815 

779 

790

837 

860 

958 

1,110 

1,210

1,290 

1,290 

1,290 

1,290 

1,290

1,300 

1,280 

1,280 

1,290 

1,280 

1,280

Mean

212

46.6 

0

457

0 

0 

0 

98.3 

1,000 

860 

1,212 

1.126 

719

441

Sept.

1,270 

1,240 

1,190 

1,130 

1,100

1,060 

1,030 

1,030 

989 

937

931 

967 

895 

881 

671

64S 

610 

620

663 

618

586 

526 

376 

276 

301

261 

245 

241 

220 

253

Run-off In 

acre-feet

13,040 

2,710 

0

338,000

0 

0 

0 

5,490 

61,460 

51,140 

74,580 

69,230 

48,770

920,400
TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK » 

Qoose Creek above Trapper Creek, near Oakley, Idaho

Location.- Water-stage recorder, lat. 42°07', long. 113°56 f , in sec. 13, T. 15 S., R. 21

 &., 5 miles upstream from Trapper Creek and 10 miles south of Oakley.

Records available.- April 1911 to September 1916, March 1919 to September 1941. 

Average discharge.- 18 years (1911-14, 1926-41), 37.7-second-feet.

Extremes.- Maximum discharge during year, 100 second-feet May 7 (gage height, 2.69 feet);

 minimum discharge recorded, 2.6 second-feet Nov. 16 (gage height, 1.33 feet).

1911-16, 1919-41: Maximum discharge, 744 second-feet Mar. 18, 1939, from rating 

curve extended above 250 second-feet by logarithmic plotting; maximum gage height, 5.6 

feet Feb. 21, 1927 (Ice effect); no flow July 22 to Aug. 10, Aug. 22-30, 1934, Aug. 15 

to Oct. 3, 1935, July 22 to Sept. 25, 1940.

Remarks.- Records good except those for periods of ice effect or no gage-height record,

 which are fair. Diversions above station for irrigation. Flow of artesian well, 

completed In 1935, enters below. Practically entire flow passing station is stored 

in Oakley Reservoir.

Cooperation.- Gage-height record furnished by Oakley Canal Co.

Rating tables, water year 1940-41, except periods of Ice effect (gage height, In feet, 

and discharge, in second-feet)

Oct. 1 to Dec. 31 Jan. 1 to Sept- 30

1.4 3.S 1.4 6.0 2.2 48 

1.6 S.8 1.6 10 2.4 68 

l.S 17 1.8 19 2.6 90 

2.0 32 2.S 113

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

6.6 

7.1 

7.4 

7.1 

7.1

7.1 

7.1 

6.6 

6.3 

6.0

6.3 

6.0 

6.0 

5.S 

5.3

5.6

5.S 

6.3 

a6.0 

5.S

6.6 

5.8 

6.0 

6.3

7.1

7.4 

S.5 

9.2 

9.2 

9.9 

10

HOT.

10 

10 

11 

11 

12

11 

11 

13

S

1111

1)9

blO 

bll

13 

14 

14 

15 

15

14 

11 

a9 

a!3 

a!5

a!6 

a!7 

17 

15 

15

Dec.

15 

15 

15 

15

J.6

16 

16 

16

x "

(*)

> a!4

/

Jan.

\

> als

*

Feb.

>

{*>

. a24

' 35 

34

35 

36 

3S 

40 

42

39 

35 

35

Month

Oct 

Hoi 

Dec

C

Jai 

Pet 

Hai 

Api 

Maj 

JUT 

Ju3 

Aue 

Sej

1

alendar year 1940 ......................

ma IT

Fater year 1940-4]

liar.

36 

40 

39 

39

37

35 

34 

32 

31 

31

31 

29 

29 

29

28

28 

29 

30 

31 

36

40 

39 

40 

43 

43

43 

42 

41 

43 

47 

48

Apr.

51 

55 

61 

63 

61

60 

57 

53 

50 

52

5S 

63 

66 

73 

71

66 

66 

66 

68 

65

59

55 

52 

55 

62

66 

66 

67 

71 

75

Secondfoot-days

213.3 

37S 

446

6,939.3

558 

801 

1,123 

1,853 

2,126 

953.8 

392.0 

420.4 

306.3

9,570.8

May

76 

72 

77 

83 

88

95 

95 

88 

86 

S3

S5 

83 

76 

73 

SI

83 

78 

72 

70 

66

57 

49 

37 

32 

34

50

51 

57 

57 

47 

41

Maximum

10 

17

79

42 

48

75 

95 

63 

28 

43 

17

95

June

45 

42 

42 

44 

52

48 

52 

62

63 

55

50 

45 

42 

35 

31

17 

18 

19 

18 

15

12 

9.9 

9.9 

15 

19

19 

19 

IS 

18 

18

July

21 

26 

23 

20 

17

14 

13 

12 

11 

9.3

S.I 

7.8 

10 

11 

10

9.3 

S.7

7.8 

7.8 

7.8

S.I 

7.5 

7.0 

7.8 

9.0

16 

2S 

17 

14 

12 

11

Aug.

10 

10 

9.6

8.7 

7.5

7.2 

7.2 

7.8 

9.0 

25

14 

14 

18 

16 

14

13 

14 

19 

43 

21

17 

16 

14 

IS 

12

11 

10 

10 

9.9 

9.9 

9.6

Minimum Mean

5.3 5.88 

9 12.6 

14.4

0 19.0

18.0 

28.6 

28 36.2 

60 61.8 

32 68.6 

9.9 31.8 

7.0 12.6 

7.2 13.6 

8.1 10.2

5.3 26.2

Sept.

9.3 

8.7 

8.4 

8.7 

9.0

8.7 

8.7 

9.0 

9.0 

9.0

8.7 

8.4 

8.1 

8.1 

8.1

8.4 

8.4 

8.1 

9.0 

9.6

9.9 

10 

12 

15 

17

15 

14 

14 

15 

13

Run-off In 

acre-feet

428 

760 

886

15,770

1,110 

1,690 

2,280 

3,680 

4,280 

1,890 

778 

884 

608

10,000

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of two discharge measurements, weather records, 

records for nearby stations and Oakley Reservoir. 

to Stage-disoharge relation affected by Ice.
84 TRIBUTARIES BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK

Oakley Reservoir near Oakley, Idaho

Location.- Staff gage, lat. 42°12', long. 113°55', in sec. 19, T. 14 S., R. 22 E., Just 

upstream from right abutment of dam on Goose Creek, 4 miles southwest of Oakley.

Records available.- October 1912 to September 1941.

Extremes.- Maximum contents observed, 14,000 acre-feet Apr. 30 (gage height, 59.8 feet); 

minimum observed, 742 acre-feet Oct. 8 (gage height, 13.72 feet).

1913-41: Maximum contents observed, 74,600 acre-feet June 15, 1921 (gage height, 

136.2 feet); reservoir drained at close of season in 1915, 1919, 1920, 1926, 1933.

Remarks.- Reservoir is formed by earth dam constructed in 1911-13; storage began in 1911. 

Capacity, 74,350 acre-feet between gage heights 0.0 (bottom of diversion tunnel) and 

136.0 feet (crest of spillway). Dead storage negligible. Water Is used for irrigation of lands along Goose Creek In Oakley Canal-Co. project. Figures given herein 

represent usable contents. Gage read occasionally and contents shown on days observations were made.

Cooperation.- Gage-height record and capacity table furnished by Oakley Canal Co.

Contents, In acre-feet, water year October 1940 to September 1941

Day

1

2

3

4

5

6

7

S

9 

10

11

12

IS

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

SO

31

Oct.

_

-

.

-

-

_

-

742

-

841

-

.

-

934

_

-

-

-

1,070

_

-

-

-

1,200

_

-

-

-

«

1,410

Hov.

_

.

-

-

-

_

1,720

-

-

-

.

1,980

-

.

-

-

-

-

2,300

-

-

2,440

-

_

-

2,640

_

2,760

-

Dec.

_

2.S30

-

-

3,030

_

.

-

-

3,350

.

-

-

.

-

-

3.5SO

-

.

-

-

-

-

3,930

-

_

-

_

4,220

Jan.

4,280

-

.

_

-

_

.

-

4,640

.

_

-

4.960

_

.

-

5,190

-

.

-

5,420

_

-

_

-

.

-

5,810

5,870

Feb.

_

~

_

.

-

_

6,290

-

6,360 

6,360

_

^

6,760

-

_

.

-

7,310

-

_

-

-

-

_

7,960

8,040

.

_

-

Mar.

_

-

_

-

-

S.590

_

_

-

9,060

_

-

-

_

.

-

9,530

-

_

-

_

_

-

10,200

-

_

-

_

-

Apr.

_

10,900

_

_

11,300

_

_

.

11,700

_

_

12,400

-

12,500

_

_

.

-

_

-

13,500

_

-

_

.

_

_

14,000

-

H«T

_

.

_

_

13,900

13,900

13,900

_

-

13,400

_

_

-

_

.

-

12, 100

-

_

11, 500

.

.

-

10,700

_

.

-

_

10,400

June

_

10,300

_

_

-

_

.

-

10, 300

_

_

_

-

10,700

.

_

.

-

_

-

10,200

.

-

_

_

_

8,950

8.S10

-

July

8,660

.

_

_

-

_

S,590

_

-

_

6,520

_

-

_

_

-

_

-

5,040

-

_

.

-

_

_

4,670

-

4,470

-

Aug.

4,360

_

_

4,470

-

_

_

_

3,860

_

_

_

-

_

_

3,520

_

-

_

-

_

.

3,040

_

_

.*

_

_

2,900

Sept.

_

2,460

_

_

-

_

.

2,320

1,960 

1,760

_

_

_

-

_

.

1,260

.

-

_

-

.

_

-

1,020

.

,.

-

_

-
TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK 85

Trapper Creek near Oakley, Idaho

Location.- Water-stage recorder, lat. 42°10', long. 113°59', in sec. 34, T. 14 S., R. 21 

£., 4 miles upstream from Oakley Dam and 7 miles southwest of Oakley.

Records available.- May 1911 to September 1916; March 1919 to September 1941. 

Average discharge.- 17 years (1911-12, 1913-14, 1926-41), 13.0 second-feet.

Extremes.- Maximum discharge during year, 700 second-feet Aug. 17 (gage height, 6.99 feet), 

rrom rating curve extended above 50 second-feet by logarithmic plotting; minimum, 2.5 

second-feet Jan. 1; minimum gage height, 4.62 feet Nov. 13, 23, Jan. 1.

1911-16, 1919-41: Maximum discharge recorded, that of Aug. 17, 1941 (a higher flow 

may have occurred during cloud burst about midnight Aug. 15, 1931); minimum not determined, probably 'occurred during winter.

Remarks.- Records good. A few small diversions above station; flow of artesian well, 

completed in 1936, enters above. Practically entire flow passing station is stored 

in Oakley Reservoir.

Cooperation.- Gage-height record furnished by Oakley Canal Co.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

81 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct 

Noi 

Dec

C

Jar 

Fet 

Mar 

Apr 

Ma; 

Jur 

Jul 

Aug 

Sej

11

Oct.

9.3 

9.3 

9.3 

9.3 

8.9

S.5 

S.5 

8.9 

9.3 

8.9

8.9 

8.9 

8.9 

8.9 

8.9

8.9 

8.5 

S.5 

S.5 

8.5

S.9 

9.3 

8.9 

9.3 

9.3

9.8 

9.8 

9.3 

9.3 

9.8 

9.3

Nov.

9.3 

9.3 

9.8 

9.3 

9.3

9.3 

S.9 

S.9 

S.9 

8.9

9.3 

8.9

re. 5

flO 

9.3

9.3 

9.3 

9.S 

9.S 

9.3

9.8 

9.S 

7.1 

11 

9.3

9.3 

8.9 

9.3 

9.3 

9.3

Dec.

8.9 

9.3 

9.3 

9.3 

9.3

9.3 

9.3 

9.3 

9.3 

8.2

6.4 

S.2 

5.3 

5.6 

7.1

S.9 

11 

11 

10 

9.3

8.9 

8.9 

9.3 

9.3 

8.9

8.9 

9.8 

9.3 

9.3 

9.8 

9.3

Jan.

7.1 

6.4 

6.7 

9.8 

10

9.S 

8.9 

S.9 

8.9 

9.3

9.3 

9.3 

9.3 

9.3 

9.3

9.3 

9.3 

9.3 

9.3 

9.8

9.8 

9.S 

9.3 

9.8 

9.S

10 

9.3 

9.3 

9.3 

S.5 

S.5

Feb.

8.5 

S.5 

8.5 

S.5 

S.5

S.9 

10 

9.S 

10 

11

18 

12 

10 

9.8 

9.8

9.8 

9.S 

9.8 

9.8 

9.8

10 

10 

10 

11 

all

alO 

9.8 

9.8

Month

alendar year 194\O... ...................

ater year 1940-4

Mar.

10 

11 

10 

10 

10

10 

alO 

alO 

alO 

alO

alO 

9.8 

9.S 

9.S 

9.8

9.S 

9.S 

9.S 

10 

11

10 

10 

11 

11 

11

10 

11 

11 

11 

11 

11

Apr.

12 

12 

12 

12 

12

11 

11 

11 

11 

12

11 

11 

12 

11 

11

11 

11 

12 

12 

11

11 

11 

11 

12 

13

12 

13 

13 

13 

14

Secondfoot-days

280.6 

276.5 

276.0

3,860.8

282.7 

882.4 

318.6 

352 

453 

338.6 

271.9 

302.7 

260.6

3, 695 . 6

May

14 

15 

15 

15 

15

15 

15 

16 

16 

16

al6 

15 

16 

16 

16

15 

15 

14 

14 

14

14 

13 

13 

13 

14

14 

14 

14 

14 

13 

14

Maximum

9.8 

11 

11

20

10 

18 

11 

14 

16 

15 

10 

42 

12

42

June

13 

12 

13 

14 

14

12 

15 

15 

13 

12

11 

11 

11 

11 

12

11 

11 

11 

11 

11

9.S 

9.3 

8.9 

S.9 

8.9

8.9 

8.9 

10 

11 

10

July

10 

9.8 

9.3 

9.3 

S.9

S.5 

S.9 

S.9 

S.9 

S.5

S.9 

8.9 

S.5 

S.5 

8.9

8.5 

8.5 

8.2 

8.9 

8.9

S.2 

7.S 

8.2 

S.5 

8.9

9.3 

9.3 

8.5 

S.5 

S.5 

S.5

Minimum

S.5 

6.5 

5.3

5.3

6.4 

S.5 

9.S 

11 

13 

8.9 

7.8 

7.5 

8.2

5.3

Aug.

S.5 

S.5 

7.5 

7.5 

7.5

7.S 

8.2 

7.S 

S.5 

9.3

S.9 

9.3 

S.9 

8.5 

S.2

8.5 

42 

11 

9.8 

9.8

9.3 

8.9 

8.9 

8.9 

8.9

S.9 

8.5 

8.5 

S.9 

S.5 

8.5

Mean

9.05 

9.22 

8.90

10.5

9.12 

10.1 

10.3 

11.7 

14.6 

11.3 

8.77 

9.76 

S.69

10.1

Sept.

S.5 

S.2 

8.5 

S.5 

S.2

8.2 

S.2 

S.5 

8.5 

8.2

8.2 

8.5 

8.5 

8.5 

8.5

S.5 

8.2 

S.2 

8.5 

8.9

8.9 

9.3 

12 

 9.S 

8.9

S.5 

, 8.5 

8.9 

8.9 

8.9

Run-off in 

acre-feet

557 

548 

547

7,660

561 

560 

632 

698 

S99 

672 

539 

600 

517

7,330

a Ho gage-height record; discharge Interpolated.

f Fragmentary gage-height record; discharge computed on basis of available gage-height record and 

records for nearby streams.
86 TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK

P. A. lateral near Mllner, Idaho

Location.- Staff gage, lat. 42°32', long. 114°01', in sec. 22, T. 10 S., R. 21 E., 600 

feet downstream from pumping station and 24 miles northeast of Milner.

Records available.- April 1919 to September 1941.

Extremes.- Maximum discharge during year, 63 second-feet on days; no flow at times.

1519-41: Maximum discharge, 64 second-feet May 11-13, 1920, July 11, 12, 19-29, 

1932; no flow at times.

Remarks.- Records excellent. Flow regulated by pumping plant, which lifts water from 

ShaKe River for irrigation on North Side Twin Falls- tract.

Cooperation.- Gage-height record and results of 16 discharge measurements furnished by 

North Side Canal Co.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

2S 

29 

30 

31

Oct. Nov.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0

11

14 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec. Jan. Feb.

Month

Dot 

No-5 

Dec

C

Jar 

Fat 

Mar 

Api 

Maj 

Jur 

Jul 

Aug 

Sei

1

alendar year 19' 0.. ....................

11. ....................................

ater year 1940-4

Mar. Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

10

24 

29 

40 

46 

52

Secondfoot-days

0 

25 

0

S,635

0 

0 

0 

201 

1,873 

1,860 

1,939 

1,953 

1,475

9,326

May

56 

56 

56 

56 

56

56 

56 

58 

60 

61

62 

62 

62 

62 

62

62 

62 

62 

62 

62

62 

62 

62 

62 

62

62 

62 

62 

62 

62 

62

Maximum

0 

14 

0

60

0 

0 

0 

52 

62 

62 

63 

63 

63

63

June

62

62 

62 

62 

62

62 

62 

62 

62 

62

62 

62 

62 

62 

62

62 

62 

62 

62 

62

62 

62 

<& 

62 

62

62 

62 

62 

62 

62

July

62 

62 

62 

62 

62

62 

62 

63 

63 

63

63 

63 

63 

63 

63

63 

63 

63 

63 

63

63 

63 

63 

63 

62

62

68 

59 

63 

63 

63

Minimum

0 

0 

0

0

0 

0 

0 

0 

56 

62 

59 

63 

0

0

Aug.

63 

63 

63 

63 

63

63 

63 

63 

63 

63

63 

63 

63 

63 

63

63 

63 

63 

63 

63

63 

63 

63 

63 

63

63 

63 

63 

63 

65 

63

Mean

0 

0.8 

0

23.6

0 

0 

0 

6.7 

60.4 

62.0 

62.5 

63.0 

49.8

25.6

Sept.

63

63 

63 

63 

63

63 

63 

63 

63 

60

63 

63 

63 

63 

63

62 

60 

60 

69 

58

66 

66 

66 

56

14

0 

0 

0 

0

0

Run- off In 

aore-feet

0 

50 

0

17,133

0 

0 

0 

399 

3,720 

3,690 

3,860 

3,870 

2,930

18,610
TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK 87

Mllner low-lift canal near Mllner, Idaho

Location.- Water-stage recorder, lat. 42°31', long. 114°01', in sec. 32, T. 10 S., R. 

21 s., 600 feet downstream from head of canal and li miles south of Mllner.

Records available.- June 1921 to September 1941.

Extremes.- Maximum discharge during year, 171 second-feet May 23, 24, Jveie 2, maximum 

gage nelght, 3.08 feet July 5-6; no flow on many days.

1921-41: Maximum discharge, 174 second-feet July 7, 1936 (gage height, 3.67 feet): 

no flow on many days.

Remarks.- Records good. Flow controlled by pumping plant, which lifts water from Snake 

River above Mllner Dam for Irrigation of 9,000 acres of land in Milner low-lift 

irrigation district.

Discharge, In aeeond-feet, water year October 1940 to September 1941

Day

1 

S 

3 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

30 

31

oet. HOT. Dee. Jan. Feb.

Month

Oot 

NOT

Dec

C

Jar 

Fet 

Max 

Apt 

Ma, 

Jux 

Ju3 

Au| 

Set

H

alendar year 19' 0... ...................

rater year 1940-4

liar. Apr.

0 

0 

0 

0 

0

O 

O 

0 

O 

0

0 

0 

0 

0

o

0 

0 

0 

0 

0

0 

8 

24 

50 

66

SI 

79 

94 

109 

124

Secondfoot-daya

0 

O 

0

23,161

O 

0 

0 

635 

4,977 

3,763 

5,101 

6,044 

2,955

22,495

May

137 

138 

138 

138

154

163 

161 

162 

162 

163

161 

161 

162 

162 

163

166

140 

165 

164 

164

164 

169

171 

171 

169

166 

166 

163 

170 

169 

170

Maximum

0 

0 

0

173

0 

0 

0 

124 

171 

171 

166 

164 

164

171

June

170 

171 

161 

152 

153

150 

78 

O 

0 

O

104 

112 

131 

138 

128

13S 

149 

149 

149 

149

140 

116 

125 

145 

146

146 

146 

146 

146 

145

July

164 

165 

163 

166 

16S

16S 

166 

161 

166 

166

166 

166 

166 

167 

163

163 

163 

163 

163 

163

163 

163 

163 

163 

163

164 

166 

166 

166 

166 

164

Minlatum

0 

0 

0

0

0 

0 

0 

0 

137 

0 

163 

161 

0

0

Aug.

164 

164 

164 

164 

164

163 

163 

163 

162 

162

162 

162 

162 

162 

161

161 

161 

162 

161 

162

163 

163 

163 

164 

164

162 

162 

164 

164 

163 

163

Mean

0 

0 

0

63.3

0 

0 

0 

21.2 

161 

126 

165 

163 

98.5

61.6

Sept.

164 

164 

164 

164 

149

143 

146 

146

146 

146

121 

146 

147 

152 

0

0 

0 

0 

106 

117

118

US 

117 

7 

0

0 

0 

94

100 

SI

Run-off In 

aere-feet

0 

0 

0

45,980

0 

0 

0 

1,260 

9,S70 

7,600 

10,120 

10,000 

5,360

44,610
88 TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK 

Gooding canal at Miner, Idaho

Location.- Water-stage recorder on Milner-Gooding canal in SWi sec. 7 and differential 

recorder on control gates of North Side Canal Co. diversions in sees. 18 and 19, T. 

10 S., R. 21 E., about 3 miles downstream from headgates that are in sec. 28, T. 10 

S., R. 21 E., lat. 42°31', long. 114°01'. The differential recorder replaced staff 

gages on May 1, 1941.

Records available.- May 1930 to September 1941.

Extremes.- Maximum daily discharge during year, 2,380 second-feet July 12-16, 25-27. No 

flow on many days.

1939-41: Maximum daily discharge, 2,410 second-feet July 15-21, 1940; no flow on 

many days.

Remarks.- Records good. Gooding canal diverts water from Snake River for Milner-Gooding 

project of Bureau of Reclamation and in part for project of North Side Canal Co. The 

latter project also receives water through the North Side Twin Falls canal and P. A. 

lateral. Discharge of canal computed by combining the discharge of Milner-Gooding 

diversion and that of North Side Canal Co. diversions below their division point and 

adding from 20 to 50 second-feet to that sum for loss between head gates and division 

point.

Cooperation.- Gage-height record and some discharge measurements furnished by North Side 

Canal Co. and American Falls Reservoir District No. 2.

Discharge, In seoond-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

1«

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

S50 

S40 

830 

650 

0

0 

0 

0 

0 

0

30 

130 

90 

90 

100

100 

100 

100 

450 

650

610 

630 

620 

650 

650

670 

670 

670 

650 

610 

580

HOT.

570 

630 

670 

710 

6SO

270 

0 

0 

0 

0

0 

0 

0 

0 

250

510 

530 

530 

530 

360

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Month

Oetol 

lovei 

Decei

Ca

Janut 

Febn 

Ifarel 

Iprl 

May.

June 

July 

lugu 

Sept

Wat

Lender year 1940

,er year 1940-41

Deo. Jan.

Secondfoot-days

12,020 

6,240 

0

338,245

0 

0 

0 

10,790 

57,760 

59,060 

71,840 

68,450 

53,990

340,150

Feb.

Discharge

Maximum

850 

710 

0

2,410

0 

0 

0 

1,200 

1,920 

2,190 

2,380 

2,320 

2,170

2,380

Mar- Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

370

710 

810 

970 

1,080 

1,090

1,160 

1,200 

1,160 

1,120 

1,120

In second-feet

Minimum

0 

0 

0

0

0 

0 

0 

0 

1,480 

1,820 

2,180 

2,150 

770

0

Mean

388 

208 

0

924

0 

0 

0 

360 

1,863 

1,969 

2,317 

2,208 

1,800

932

May

1,4SO 

1,790 

1,870 

1,870 

1,880

1,870 

1,870 

1,870 

1,890 

1,890

1,890 

1,880 

1,840 

1,840 

1,840

1,830 

1,860 

1,860 

1,870 

1,880

1,880 

1,880 

1,890 

1,890 

1,890

1,900 

1,910 

1,920 

1,910 

1,910 

1,910

June

1,920 

1,920 

1,920 

1,920 

1,910

1,910 

1,900 

1,910 

1,870 

1,830

1,830 

1,820 

1,830 

1,830 

1,840

1,910 

1,950 

1,950 

1,950 

1,950

1,970 

2,010 

2,080 

2,070 

2,150

2,170 

2,170 

2,190 

2,190 

2,190

Total 

run-off In 

acre-feet

23,840 

12,380 

0

670,880

0 

0 

0 

21,400 

114,560 

117,140 

142,490 

135,770 

107,090

674,370

July

2,190 

2,180 

2,180 

2,180 

2,180

2,180 

2,210 

2,230 

2,230 

2,320

2,370 

2,380 

2,380 

2,380 

2,380

2,380 

2,370 

2,370 

2,370 

2,370

2,370 

2,370 

2,360 

2,370 

2,380

2,380 

2,380 

2,370 

2,360 

2,340 

2,330

Aug.

2,320 

2,310 

2,310 

2,300 

2,280

2,240 

2,190 

2, ISO 

2,160 

2,160

2,170 

2,160 

2,150 

2,170 

2,220

2,210 

2,200 

2,200 

2,190 

2,200

2,210 

2,210 

2,210 

2,210 

2,210

2,210 

2,190 

2,170 

2,170 

2,170 

2,170

Sept.

2,170 

2,170 

2,170 

2,160 

2,160

2,160 

2,160 

2,140 

1,990 

1,840

1,840 

1,850 

1,850 

1,800 

1,770

1,780 

1,730 

1,700 

1,700 

1,700

1,700 

1,700 

1,700 

1,700 

1,680

1,650 

1,640 

1,640 

970 

770

Distribution 

(acre-feet)

To MllnerGoodlng 

project

( 

5,38<

(

407, 65(

( 

C

21,40(

n,soc

75,19( 

95,541 

88,36 

62,64

419, 81(

To North Side 

Canal Co. 

project

} 23,840 

3 7,000 

3 0

> 263,230

) 0 

) 0 

) 0 

) 0 

) 43,260 

} 41,050 

} 46,950 

) 47,410 

) 44,450

> 254,860
TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK 89

North Side Twin Falls canal at Miner, Idaho

Location.- Water-stage recorder,* lat. 42°32', long. 114°01', in sec. 20, T. 10 S., R. 

21 E., half a mile north of Miner and three-quarters of a mile downstream from head 

gates at Miner Dan.

Records available.- May 1909 to September 1941.

Extremes.- Maximum discharge during year, 2,640 second-feet July 26, 27, Aug. 10 (gage 

height, 8.11 feet); no flow on several days.

1909-41: Maximum daily discharge, 3,200 second-feet July 5-7, 29-31, 1921, May 15, 

1928, June 2, July 23, 1929; no flow at times when head gates were closed.

Remarks.- Records excellent April to September, good October to March. Flow controlled 

by operation of head gates. Water diverted by this canal and by P. A. lateral and 

part of that diverted by Gooding canal, all at Milner, is used for irrigation of 

163,000 acres of land under the North Side Canal Co. system. Some sub-marginal land 

was removed from cultivation resulting in a reduction of acreage irrigated.

Cooperation.- Gage-height record and results of 28 discharge measurements furnished by 

North side Canal Co.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29

30 

31

Oct.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

459 

676 

627 

598

688 

679 

579 

217 

0

0 

10 

0 

0 

0

0 

0 

0 

0 

0 

0

NOT.

0 

0 

0 

0 

0

349 

679 

575 

566 

569

575 

582 

579 

575 

569

559 

547 

, 537 

543 

547

543 

550 

531 

512 

494

497 

500 

497 

497 

494

Dec.

494 

494 

487 

490 

490

497 

506 

503 

497 

500

503 

506 

506 

506 

494

497 

490 

484 

469 

463

463 

460 

457 

457 

454

454 

445 

454 

457 

454 

451

Jan.

451 

451 

461 

445 

445

430 

424 

424 

427 

427

427 

412 

409 

400 

394

397 

397 

397 

397 

397

397 

397 

397 

397 

409

415 

421 

421 

421 

421 

421

Feb.

421 

424 

424 

421 

421

421 

421 

424 

424 

430

433 

421 

427 

427 

430

430 

433 

430 

433 

433

436 

439 

439 

436 

442

439 

436 

436

Month

Oet

No\ 

Dec

C

Jar 

Fet 

Max 

Api 

Maj 

Jur 

Jul 

Aug 

Set

1

alendar year 194 0... ...................

ater year 1940-4

Mar.

433 

433 

433 

436 

430

439 

439 

436 

433 

433

442 

448 

448 

445 

442

448 

436 

433 

436 

436

439 

439 

436 

433 

412

403 

400 

400 

406 

136 

0

Apr.

10 

0 

0 

174 

525

595 

700 

765 

S24 

850

S97 

926 

900 

919 

952

960 

1,070 

1,240 

1,250 

1,300

1,440 

1,630 

1,840 

1,840 

1,820

1,860 

1,880 

1,940 

2,110 

2,270

Secondfoot-days

4,332 

13,366 

14,882

414,724

12,919 

12,031 

12,662 

33,507 

70,240 

63,760 

78,180 

71,960 

31,677

419,516

May

2,260 

2,270 

2,380 

2,430 

2,470

2,500 

2,260 

2,200 

2,250 

2,250

2,250 

2,290 

2,290 

2,300 

2,300

2,300 

2,290 

2,310 

2,310 

2,300

2, ISO 

2,100 

2,100 

2,100 

2,100

2,100 

2,100 

2,250 

2,330 

2,330 

2,340

M&xlmuB

676 

582 

506

2,620

451 

442 

446 

2,270 

2,500 

2,330 

2,640 

2,640 

1,730

2,640

June

2,330 

2,330 

2,330 

2,330 

2,330

2,320 

2,160 

2,050 

1,970 

1,970

1,960 

2,050 

2,070 

2,100 

2,090

1,940 

1,890 

1,890 

1,990 

2,120

2,060 

2,100 

2,040 

2,120 

2,140

2.1SO 

2,210 

2,250 

2,240 

2,210

July

2,190 

2,190 

2,E40 

2,260 

2,300

2,340 

2,430 

2,520 

2,530 

2,540

2,550 

2,580 

2,580 

2,5SO 

2,530

2,580 

2,560 

2,590 

2,620 

2,620

2,620 

2,620 

2,630 

2,630 

2,630

2,640 

2,640 

2,620 

2,610 

2,680 

2,560

Minimum

0 

0 

445

0

394 

421 

0 

0 

2,100 

1,S90 

2,190 

1,950 

352

0

Aug.

2,560 

2,570 

2,570 

2,570 

2,570

2,590 

2,610 

2,630 

2,630 

2,640

2,630 

2,610 

2,580 

2,470 

2,220

2,190 

2,160 

2,120 

2,110 

2,110

2,110 

2,110 

2,120 

2,130 

2,100

2,070 

2,070 

2,060 

2,050 

2,050 

1,950

Mean

140 

446 

480

1,133

417 

430 

408 

1,117 

2,266 

2,125 

2,522 

2,321 

1,056

1,149

Sept.

1,730 

1,660 

1,640 

1,610 

1,580

1,500 

1,530 

1,530 

1,500 

1,480

1,470 

1,490 

1,500 

1,460 

1,400

1,370 

1,150 

433 

367 

352

421 

569 

641 

41S 

352

35S 

516 

608 

604 

438

Run-off In 

acre-feet

8,590 

26,510 

29,520

822,700

25,620 

23,660 

25,110 

66,460 

139,300 

126,500 

155,100 

142,700 

62,830

832,100
90 TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON PALLS CREEK

South Side Twin Falls canal at Mllner, Idaho

Location.- Water-stage recorder, lat. 42°31', long. 114°01' In sec. 29, T. 10 S., R. 21

E., and 700 feet downstream from head gates at Mllner.

Records available.- May 1909 to September 1941.

Extremes.- Maximum discharge during year, 3,610 second- feet July 23 (gage height, 10.45 

reet); minimum, 35 second- feet Nov. 1-5.

1909-41: Maximum dally discharge, 4,600 second-feet Aug. 12, 1918, computed on 

basis of stage-discharge relation for canal plus estimates by hydrographer of water 

wasted through spillway below station and returned to river; no flow Sept. 20, 1920.

Remarks.- Records excellent except those for period when gates were closed, which are 

rair. Flow controlled by head gates. South Side Twin Falls canal diverts water from 

Snake River at Mllner Dam for Irrigation of 202,000 acres of land In Twin Falls County.

Cooperation.- Gage-height record furnished by Twin Falls Canal Co.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24

25

26 

27 

28 

29 

SO 

31

Oct.

1,070 

1,030 

996 

937 

SS6

S58 

752 

681 

688 

613

5SO 

577 

583 

595 

613

619 

622 

619 

616 

619

622 

628 

649 

649 

649

649 

659 

649 

637 

625 

463

NOT.

a35 

a35 

a35 

a35 

a35

233

612 

825 

823 

822

S22 

S22 

822 

819 

691

619 

622 

622 

622 

625

634 

62S 

628 

628 

625

625 

625 

625 

625 

628

Dec.

625 

625 

631 

628 

628

613 

607 

610 

598 

592

592 

592 

59S 

59S 

595

595 

595 

595 

598 

598

595 

598 

592 

689 

592

595 

595 

595 

592 

595 

595

Jan.

586 

592 

592 

592 

595

595 

595 

5S9 

589 

586

577 

580 

577 

580 

580

574 

568 

56S 

571 

571

565

568 

571 

571 

571

571 

571 

571 

574 

574 

574

Feb.

577 

577 

577 

577 

577

577 

583 

586 

577 

568

568 

571 

559 

559 

547

541 

538 

541 

541 

541

544 

544 

541 

544 

544

532

532 

532

Month

Oot 

No\

Dec

C

Jar 

Pal 

Max

§Jur 

JuJ A**

Sej

11

rua

Fater year 1940-4

liar.

532

532 

532 

529 

532

535 

506 

501 

501 

467

460 

460 

464 

454 

467

467 

464 

457 

457 

454

452 

458 

379

3t52 

152

158 

247 

481 

622 

771 

822

Apr.

S86 

1,130 

1,250 

1,260 

1,260

1,270 

1,260 

1,260 

1,360 

1,430

1,440 

1,440 

1,440 

1,440 

1,440

1,440 

1,440 

1,440 

1,380 

1,400

1,460 

1,900 

2,210 

2,520 

2,550

2,620

2,640 

2,640 

2,780 

2,970

Secondfoot-days

21,465

16,846 

18,646

628,991

17,938 

15,595 

14,419 

50,956 

97,710 

87,630 

105,310 

107,890 

69,390

628,783

Bay

3,220

3,260 

3,160 

3,130 

3,090

3,060 

3,120 

3,140 

3,130 

3,120

3,140 

3,150 

3,150 

3,150 

3,160

3,170 

3,150 

3,160 

3,150 

3,160

3,150 

3,150 

3,160 

3,150 

3,160

3,180 

3,180 

3,180 

3,180 

3,130 

3,100

MttTllmTHI

1,070 

825 

631

3,850

595 

586 

822

2,970 

3,280 

3,180 

3,590 

3,510 

3,400

3,590

June

3,070 

3,040 

3,000 

2,980 

2,970

2,970 

2,760 

2,680 

2,670 

2,630

2,560 

2,560 

2,560 

2,600 

2,630

2,720 

2,800 

2,920 

3,010 

3,090

3,090 

3,080 

3,080 

3,130 

3,160

3,170 

3,150 

3,180 

3,180 

3,160

July

3,140 

3,150 

3,170 

3,170 

3,180

3,200 

3,220 

3,250 

3,360 

3,410

3,400 

3,410 

3,420 

3,430 

3,460

3,470 

3,470 

3,480 

3,490 

3,490

3,530 

3,560 

3,590 

3,570 

3,560

3,500 

3,470 

3,460 

3,440 

3,430 

3,430

Minimum

483 

35 

589

35

565 

532 

152 

886 

3,060 

2,560 

3,140 

3,400 

1,270

36

Aug.

3,440 

3,420 

3,400 

3,420

3,440

3,470 

3,500 

3,500 

3,510 

3,510

3,500 

3,500 

3,500 

3,500 

3,490

3,480 

3,480 

3,490 

3,490 

3,500

3,500 

3,500 

3,500 

3,500 

3,500

3,500 

3,500 

3,490 

3,490 

3,460 

3,420

Mean

692 

562

601

1,705

579 

567 

466 

1,699 

3,162 

2,921 

3,397 

3,480 

2,313

1,709

Sept.

3,400 

3,340 

3,220 

3,200 

3,160

3,040 

2,990 

2,920 

2,840 

2,690

2,570 

2,530 

2,430 

2,390 

2,320

2,220 

2,120 

2,090 

2,090 

2,030

1,990 

1,870 

1,780 

1,670 

1,590

1,510 

1,400 

1,360 

1,360 

1,270

Run-off In 

acre-feet

42,550 

33,410 

36,980

1,238,000

36,580 

30,930 

28,600 

101,100 

193,800 

173,800 

208,900 

214,000 

137,600

1,237,000

a Sates closed; leakage estimated by observer.
TRIBUTARIES AND DIVERSIONS BETWEEN PORTNEUF RIVER AND SALMON FALLS CREEK 91

Rock Creek near Twin Falls, Idaho

Location.- Water-stage recorder, lat. 42°36', long. 114°32', in SWi sec. 36, T. 93., R.

 16 V., at highway bridge, 3 miles upstream from mouth and 4 miles northwest of town 

of Twin Falls.

Records available.- March 1922 to September 1941. 

Average discharge.- 19 years, 210 second-feet.

Extremes.- Maximum discharge during year, 363 second-feet June 7 (gage height, 2.88 feet);

 minimum, 90 second-feet Mar. 28 (gage height, 1.66 feet).

1922-41: Maximum discharge, 984 second-feet Sept. 21, 1927 (gage height, 4.5 feet, 

datum then in use, from floodmarks); minimum, that of Mar. 28, 1941.

Remarks.- Records good except those for periods of no gage-height record, which are poor.

 Practically all normal summer flow diverted several miles above station for irrigation. 

Waste water from South Side Twin Falls low-line'canal, which crosses Rock Creek 12 

miles above station, causes abrupt fluctuations in stage at times. Irrigation waste 

water and return flow from project lands enter above gage.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

IS 

19 

80

21 

88 

23 

84 

26

86 

27 

88 

89 

30 

31

Oct.

240 

238 

233 

221 

221

a220 

218 

221 

223 

216

209 

209 

205 

802 

207

212 

212 

212 

212 

212

212 

207 

200 

202 

205

809 

209 

202 

202 

202 

198

Hoy.

19S 

200 

200 

1S5 

168

162 

160 

155 

170 

1S5

a!88 

al90 

a!93 

al95 

198

198 

19S 

198 

187 

187

1S7 

165 

173 

173 

1S3

179 

181 

185 

187 

194

Dec.

192 

173 

170 

170 

171

168 

166 

166 

164 

160

155 

a!49 

a!42 

h!36 

236

223 

246 

171 

145 

142

143 

145 

14S 

150 

150

148 

155 

148 

152 

157 

145

Jan.

131 

127 

136 

223 

181

168 

153 

138 

132 

131

131 

130 

12S 

132 

150

148 

145 

127 

alSO 

al34

137 

131 

127 

127 

127

130 

122 

121 

US 

118 

117

Feb.

117 

117 

117 

allS 

al!9

al!9 

alSO 

a!21 

a!22 

a!22

a!23 

124 

120 

121 

120

118 

117 

US 

118 

115

114 

114 

US 

117 

113

112 

112 

114

Month

Dot 

NOT 

Dec

(

Jai 

Pel 

Itai 

Api 

Maj 

Jur 

Ju] 

AUJ 

Se]

1

 11. ....... ... ...

Ly..... .................................

later year 1940»-<

liar.

115 

114 

112 

113 

112

106 

102 

101 

101 

104

102 

101 

103 

102 

101

98 

99 

99 

100 

107

109 

108 

108 

107 

99

94 

92 

92 

110 

109 

114

Apr.

122 

134 

143 

153 

152

150 

146 

150 

153 

162

152 

150 

148 

150 

158

157 

155 

163 

148 

152

163 

146 

163 

164 

202

175 

179 

177 

177 

177

Seccndfoot-daya

6,591 

5,642 

5,086

65,699

4,250 

3,300 

3,234 

4,691 

5,707 

6,986 

6,621 

7,508 

3,257

67,773

May

177 

179 

177 

179 

183

179 

1S1 

1S7 

1S5 

181

1S1 

1S1 

173 

173 

175

166 

173 

1S1 

185 

173

170 

170 

170 

175 

1S5

200 

207 

209 

212 

218 

a222

Maximum

240 

200 

246

298

223 

124 

115 

802 

282 

348 

254 

259 

285

348

June

226 

281 

21S 

216 

209

270 

338 

348 

29S 

262

246 

233 

230 

226 

228

228 

223 

226 

228 

223

218 

212 

205 

196 

200

209 

207 

2O9 

221 

212

July

212 

207 

207 

209 

207

198 

202 

a200 

198 

19S

196 

194 

194 

19S 

198

202 

200 

202 

212 

214

212 

221 

228 

236 

233

ess

243 

264 

240 

233 

240

Minimum

19S 

155 

136

95

117 

112 

92 

122 

166 

196 

194 

233 

262

92

Aug.

243 

243 

240 

833 

236

236 

233 

233 

238 

233

233 

248 

248 

243 

240

240 

243 

246 

243 

246

238 

243 

240 

240 

246

246 

248 

248 

251 

251 

259

Mean

213 

185 

164

180

137 

118 

104 

156 

184 

233 

214 

242 

275

186

Sept.

262 

276 

279 

270 

270

270 

270 

273 

279 

285

288 

285 

882 

282 

288

282 

282 

279 

270 

276

273 

273 

285 

279 

270

273 

268 

265 

270 

266

Run-off in 

aere-feet

13,070 

10,990 

10,090

130,300

8,430 

6,550 

6,410 

9,300 

11,320 

13,860 

13,130 

14,690 

16,380

134,400

a Ho gage-height record; discharge Interpolated* 

h Computed from staff-gage reading.

461677 O - 42 - 7
92 SALMON FALLS CREEK BASIN

Salmon Falls Creek near San Jacinto, Nev.

Location.- Water-stage recorder, lat. 41°57', long. 114°42', in sec. 23, T. 47 N., R. 64 

£ » in canyon 200 yards downstream from highway bridge, 250 yards downstream from 

Shoshone Creek, and 5 miles north of San Jacinto.

Records available.- September 1909 to September 1916, October 1918 to September 1941. 

Average discharge.- 27 years (1910-16, 1919-20, 1921-41), 118 second-feet.

Extremes.- Maximum discharge during year, 316 second-feet June 8 (gage height, 4.20 

reet); minimum recorded, 13 second-feet Aug. 9 (gage height, 2.34 feet).

1909-16, 1918-41: Maximum discharge, 1,760 second-feet Mar. 18, 1939 (gage height, 

9.23 feet); minimum, 5.3 second-feet Aug. 17, 1840 (gage height, 2.16 feet).

Remarks.- Records good except those for December 3-12, March 14-28, which are fair, and 

tnose for July 16-29, which are poor. Many diversions above station for irrigation. 

Salmon Dam of Salmon River Canal Co., Ltd., 15 miles below station, forms a reservoir 

having a capacity of about 180,000 acre-feet.

Cooperation.- Gage-height record furnished by Salmon River Canal Co., Ltd.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

87 

86 

29 

30 

31

Oct.

26 

25 

29 

26 

25

24 

22 

22 

21 

21

21 

22 

23 

22 

22

23 

23 

24 

24 

24

24 

26 

2V 

2S 

2B

29 

30 

30 

33 

37 

36

Nov.

3S 

SS 

39 

43 

45

4B 

46 

45 

45 

44

44 

44 

39 

39 

44

45 

42 

44 

43 

41

41 

34 

30 

40 

41

32

41 

41 

41 

41

Dec.

41 

39 

a 40 

a 40 

a40

*40 

a 40 

a40 

a40 

a40

a35 

a30 

42 

40 

40

43 

44 

46 

47 

48

50 

50 

52 

52 

50

51 

52 

44 

55 

55 

47

Jan.

37 

42 

42 

44 

47

4S 

48 

48 

48 

46

45 

4S 

4B 

53 

50

53

50 

61 

5S 

5S

61 

65 

65 

66 

67

69 

69 

61 

56 

56 

60

Feb.

57 

61 

5S 

56 

55

54 

65 

54 

53 

55

65 

65 

61 

60 

57

57 

57 

57 

58 

5V

57 

60 

63 

69 

VO

67 

65 

65

Month

Oct

NOT!

Dec 

C

Jan 

Pet 

Mar 

Apr 

May 

JUH 

Jul 

Aug 

Sep

fl

ember. .................................

alendar year 1940 ......................

ater year 1940-4

Mar.

71 

86 

SO 

7V 

78

7S 

7V 

72 

72 

75

75 

74 

72 

aVO 

a 68

a6B 

a72 

a7B 

aB6 

alOO

allO 

allO 

allO 

a 125 

alSO

a!30 

a!30 

a!20 

130 

139 

147

Apr.

153 

155 

161 

165 

163

161 

151 

145 

141 

147

165 

172 

172 

172 

1VO

174 

174 

176 

170 

159

151 

143 

139 

141 

151

170 

176 

182 

193 

211

Secondfoot-days

799 

1,258 

1,373

2B.022.5

1,669 

1,67S 

2,910 

4,905 

7,301 

4,680 

1,111 

S41 

S95

29,400

May

230 

243 

25S 

2VO 

267

260 

239 

22V 

230 

230

227 

225 

22V 

260 

296

301 

274 

239 

220 

220

216 

193 

174 

163 

170

211 

253 

272 

25S 

232 

216

Maximum

37 

4B 

55

334

69 

70 

147 

211 

301 

306 

66 

42 

36

306

June

204 

191 

1S2 

170 

170

184 

2S6 

304 

30S 

301

260 

220 

191 

167 

151

149 ' 

141 

131 

124 

115

103 

92 

SI 

74 

70

65 

61 

5S 

62 . 

65

Minimum

21 

30 

30

6.!

37 

53 

6S 

139 

163 

56

14 

23

14

July

66 

65 

65 

66 

65

60 

60 

56 

54 

51

48 

42 

37 

36 

30

> a20

15

15

Aug.

16 

15 

15 

14 

14

14 

14 

15 

14

14

IS 

22 

2S 

26 

28

26 

26 

35 

34 

32

31 

36 

37 

3S 

40

42 

40 

39 

40 

3S 

36

Mean

25.6 

41.3 

44.3

) 76.6

53. S

59.9 

93.9 

164 

236 

156 

35. S 

27.1 

29.6

SO. 5

Sept.

36

35 

36 

36 

36

36 

35 

34 

33 

32

30 

29 

26 

26 

25

26 

24 

24 

23 

23

23 

23 

32 

34 

33

32 

29

2S 

28 

2S

Run-off In 

acre-feet

1,580 

2,460 

2,720

55,590

3,310 

3,330 

5,7VO 

9,730 

14,460 

9,2SO 

2,200 

1,670 

1,780

56,310

a No gage-height record; discharge computed on basis of weather records and records for stations 

on nearby streams.
SALMON FALLS CREEK BASIN 93

Salmon River Canal Co. Reservoir near Rogerson, Idaho

Location.- Staff gage at dam on Salmon Falls Creek, lat. 42°13', long. 114°44', in sec. 

17, T. 14 S., R. 15 E., 10 miles west or Rogerson. Datum of gage is 4,990.0 feet 

above mean sea level (surveys of Salmon River Canal Co.).

Records available.- January 1922 to September 1941.

Extremes.- Maximum contents observed during year, 28,640 acre-feet June 18 (gage height, 

19.20 feet); minimum observed, 500 acre-feet Oct. 1-10 (gage height, 0.40 foot).

1922-41: Maximum contents observed, 123,700 acre-feet May 30, 31, 1922 (gage height, 

61.1 feet); minimum observed, 125 acre-feet Sept. 21 to Oct. 5, 1934 (gage height, 0.1 

foot). .

Remarks.- Reservoir is formed by gravity-section concreteTarch dam completed in 1911; 

storage began in 1910. Capacity, 182,650 acre-feet between gage heights 0.0 foot 

(bottom of outlet tunnel) and SO.O feet (maximum operating level). Dead storage unknown. Water is used for Irrigation of lands in Salmon River Canal Co. project. Figures given herein represent usable contents. Gage read once dally.

Cooperation.- Gage-height record and capacity table furnished by Salmon River Canal Co. 

CTcT

Contents, In acre-feet, water year October 1940 to September 1941

D«y

i

2

S

4

5

6

7

S

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

500

500

500

500

500

500

500

500

500

500

625

625

625

625

625

750

750

750

750

750

750

750

750

750

S75

875

S75

S75

S75

875

S75

Nor.

1,125

1,125

1,125

1,125

1,125

1,125

1,188

1,250

1,312

1,375

1,433

1,500

1,562

1,625

1,683

1,750

1,312

1,375

1,933

2,000

2,062

2,062

2,062

2,125

2,183

2,250

2,312

2,375

2,500

2,568

Dec.

2,635

2,770

2,833

2,905

2,770

2,770

2,635

2,500

2,438

2,375

2,250

2,138

2,250

2,250

2,250

2,312

2,375

2,438

2,500

2,568

2,635

2,702

2,770

2,833

2,905

2,972

3,103

3,242

3,310

3,445

3,580

Jan.

3,530

3,530

3,530

3,530

3,715

3,350

3,350

3,985

4,120

4,120

4,255

4,322

4,390

4,453

4,592

4,660

4,795

4,795

4,862

4,930

5,065

5,132

5,200

5,268

5,335

5,470

5,538

5,605

5,672

5,740

5,308

Fsb.

5,375

5,942

6,010

6,073

6,073

6,145

6,212

6,280

6,415

6,482

6,550

6,695

6,340

6,913

6,995

,140

,212

,285

,430

,502

,575

,720

,792

,865

3,010

8,155

3,300

8,372

_

-

Mar.

3,445

8,590

3,735

S,S08

3,380

9,025

9,170

9,242

9,315

9,460

9,605

9,673

9,750

9,895

10,040

10,110

10,130

10,260

10,330

10,430

10,620

10,760

10,910

11,060

11,200

11,340

11,490

11,710

11,850

12,070

12,280

Apr.

12,500

12,780

13,030

13,360

13,510

13,300

14, 100

13,950

13,950

14,250

14,550

14,700

15,000

15.380

15,680

15,980

16,200

16, 580

16,300

17, 100

17,320

17,550

17,780

18,000

13,300

IS, 540

18, S60

19, 100

19,340

19,660

-

May

19,900

20,330

20, 7SO

21,180

21,670

22, 180

22,520

22,940

23,370

23, 300

24,220

24,640

24,900

25, 240

25,580

25,920

26,260

26,430

26,430

26,600

26,090

25, 750

25,240

24,730

24, 140

23,370

22,690

22,130

22, 100

22,350

22,690

June

23,030

23,200

23,460

23,800

24, 140

24,300

24,730

25,160

25,530

26, ISO

26,600

27,110

27,450

27,790

27,960

23,300

28,330

23,640

27,960

27,280

26,430

25,530

24,640

23,540

22,780

22,690

22,690

22,730

22,860

23,030

~

July

23,120

23,200

23,200

23,230

23,370

22,520

21,670

20,360

19,900

18,940

13,000

17,250

16,350

15,930

15,930

15,930

15,980

15,980

15, 150

14,400

13,730

13,000

12,280

11,640

11,200

11,200

.11,200

11,200

11,130

11, 130

11,060

Aug.

10,930

10, 400

9,822

9,093

8,372

7,648

7,358

7,353

7,430

7,430

6,622

6,010

5,533

5,200

4,930

4,660

4,525

4,322

4,120

3,918

3,350

3,850

3,913

3,913

3,935

4,052

4,052

4,052

4,120

4,120

4,120

Sept.

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,188

4,120

4,120

4,120

4,120

4,120

4,120

4,120

4,255

4,255

4,255

4,255

4,255

4,255

"

Monthly gage height and contents, water year October 1940 to September 1941

Dats

Calendar year 1940......

Water year 1940-41......

Gage height 

(feet)

-

-

Contents 

(acre-feet)

-

12 2SO

*

-

Change In contents 

during month 

(acre-feet)

-3,560

+2 223

+3,830
in 

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1

<a

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a 

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i

o><o»i-ioi i-ioooo. <omioioo» gtgtaono ooooo oooo

3S8S53 8 1 88SS* S8 «8 «

oooo<o oof-inn nooaoo ooooo oooi-to oooo

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00 mooOf-i oaoaiHiD o>c-ioo>

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BIO WOOD RIVER BASIN 95

Big Wood River at Halley, Idaho

Location.- Water-stage recorder, lat. 43°31', long. 114°20', In SWi sec. 9, T. 2 N., 

 RT"T5~E., at steel highway bridge a quarter or a mile southwest of Halley.

Drainage area.- 640 square miles.

Records available.- June 1915 to September 1941.

Average discharge.- 26 years, 278 second-feet.

Extremes.- Maximum discharge during year, 1,800 eecond-feet May 27 (gage height, 4.99 

reet); minimum, 1 second-foot Jan. 2-4, 10, 11, Jan. 27 to Feb. 21, Feb. 25-27.

1915-41: Maximum discharge, 4,480 second-feet June 7, 1938; maximum gage height, . 

8.66 feet June 12, 1921; practically no flow Sept. 15-23, Nov. 20, 22, 23, 1931, Oct. 

25, 1937.

Remarks.- Records good except those for periods of no gage-height record and those below 

10 second-feet, which are fair. Water diverted around station by Halley power plant 

and returned to river through Big Wood Slough. Total flow of river at Halley (combined flow of Big Wood River and Big Wood Slough) is given In table on following page. 

Diversions above station for Irrigation.

Cooperation.- Gage-height record April to September furnished by watermaster for Big 

Wood ana Little Wood Rivers.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

S 

3

4 

5

6 

7 

8 

9 

10

11 

18 

13 

14 

16

16 

17 

IS 

19 

80

81 

22

23 

84 

86

86 

27 

88 

28 

30 

31

Oct.

5

10 

39 

37 

25

18 

16 

19 

17 

16

16 

16 

a!5 

aS 

aS

aS 

aS 

aS 

h3 

a3

a8 

a8 

a8

aS 

allO

alOO 

a!40 

alSO 

H120 

allO 

50

NOT.

5

a7 

11 

S 

5

5

7 

6 

6

4

4 

3 

3 

3 

3

3 

2 

2 

2

2

2 

2 

2 

2

2

2 

3 

3 

4 

4

Dec.

3 

4

4 

5 

4

9 

5 

6

7

4

3

2 

2 

2 

2

S

5 

5 

5

4

3 

4 

5 

2 

2

2 

2 

2 

2 

2 

8

Jan.

2

1 

1 

1 

2

2 

8 

2

2

1

1 

8 

2 

8 

8

2 

2 

8 

8 

2

2 

2 

2 

2 

2

8

1 

1 

1 

1 

1

Feb.

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1

1 

1 

1

1 

2 

8 

2

1

1 

1 

8

Month

Dot 

N01 

Dee

C

Jar 

Fet 

Hax

Apr

Jur 

Ju3 

Aug 

Set

t

alendar year 1940......................

Fater year 1940-4

liar.

2 

2 

2 

2 

8

2 

8 

8 

2 

8

8 

8 

8 

2 

8

8 

8 

4

8 

6

10 

9 

6 

6

e

22

68

118 

156 

173 

170

Apr.

170 

197 

198 

185 

190

163 

166 

169 

182 

208

195 

173 

177 

803 

847

863 

247 

287 

208 

205

213 

227 

269 

324

317

363 

426 

525 

632

766

Secondfoot -day a

1,038 

117 

109

98,672

52 

38 

792 

7,997 

33,494 

31,978 

8,367 

3,886 

654

87,866

May

765 

755 

7S5 

S78 

845

725 

648 

642 

610 

626

785 

1,180 

1,560 

1,480 

1,250

1,110 

1,110 

1,250 

1,080 

910

910 

1,110 

1,320 

1,520 

1,560

1,640 

1,680 

1,400 

1,180 

1,080 

1,080

MaxlBROfl

140 

11 

9

1,880

2 

2

173 

755 

1,660 

1,400 

646 

303 

53

1,660

June

1,010 

910 

910 

975 

910

942 

1,140 

1,320 

1,280 

1,220

1,220 

1,280 

1,400 

1,400 

1,400

1,360 

1,220 

1,220 

1,220 

1,110

1,010 

1,040 

1,110 

1,040 

942

755 

703 

714 

648 

575

July

545 

520 

520 

525

502

470 

470 

443 

396 

347

321 

269 

227 

213 

208

195 

173 

161 

173 

203

173 

161 

152 

152 

128

116 

130 

143 

135 

104 

92

Minimum

2 

2 

2

1

1 

1 

2 

156 

610 

575 

92 

50 

6

1

Aug.

90 

81 

a70 

a50 

a84

84 

84 

84 

74 

72

152 

303 

190 

141 

106

95 

104 

150 

112 

97

102 

114 

110 

100 

106

100 

88 

74 

76 

72 

61

Mean

33.5

3.9 

3.5

253

1.7 

1.1 

25.5 

267 

1,080 

1,066 

270 

104 

21.8

241

Sept.

43 

42 

63 

43

34

25 

25 

29 

26 

25

21 

30 

29 

29 

22

20 

16 

13 

11 

16

14 

14 

14 

14 

10

8 

9 

7 

6 

6

Run-off in 

acre-feet

2,060 

232 

216

183,800

103 

63 

1,570 

15,860 

66,430 

63,430 

16,600 

6,400 

1,300

174,300

a No gage-height record; discharge computed on basis of weather records and records for nearby 

stations, 

h Computed from staff-gags readings.
BIG WOOD RIVER BASIN

Combined discharge, in second-feet, of Big Wood River and Big Wood Slough at Hailey, Ohio, 

water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

215 

249 

311 

276 

248

233 

231 

218 

213 

208

202 

199 

199 

201 

202

197 

190 

187 

184 

176

175 

175 

174 

175 

298

290 

269 

257 

243 

232 

210

Nov.

220 

222 

226 

218 

204

209 

216 

215 

211 

194

192 

171 

163 

179 

187

191 

200 

206 

190 

184

195 

178 

160 

165 

184

172 

161 

171 

179 

178

Dec.

171 

170 

173 

171 

167

172 

168 

164 

165 

148

119 

105 

90 

84 

92

103 

132 

151 

153 

151

156 

160 

167 

166 

165

159 

171 

145 

141 

153 

159

Jan.

114 

118 

104 

121 

141

145 

153 

153 

152 

149

151 

146 

148 

156 

155

150 

141 

153 

153 

152

152 

152

148 

145 

142

142 

121 

118 

130 

130 

131

Feb.

134 

141 

140 

140 

141

145 

154 

154 

152 

152

152 

153 

138 

145 

148

147 

147 

148 

148 

145

142 

143 

143 

146 

137

121 

131 

142

Month

Oct

NOTl

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur jui

Aug 

Sep

HI

alendar year 1940 ......................

ater year 1940-4

Mar.

165 

162 

155 

158 

153

153 

153 

160 

168 

166

172 

178 

170 

164 

166

178 

182 

200 

217 

221

225 

232 

229 

229 

231

245 

285 

333 

350 

365 

362

Apr.

360 

389 

386 

379 

384

357 

354 

353 

366 

392

388 

388 

400 

418 

470

486 

452 

426 

407 

407

412 

428 

470 

525 

526

568 

629 

729 

836 

939

Secondfoot -days

6,827 

5,741 

4,591

134,368

4,366 

4,028 

6,527 

14,024 

39,377 

37,747 

14,268 

9,146 

6,770

153,412

May

942 

930 

972 

1,060 

1,040

917 

842 

849 

817 

827

981 

1,380 

1,770 

1,670 

1,440

1,290 

1,280 

1,430 

1,260 

1,090

1,080 

1,290 

1,520 

1,710 

1,740

1,830 

1,890 

1,590 

1,380 

1,280 

1,270

Maximum

311 

226 

173

1,880

156 

154 

365 

939 

1,890 

1,620 

741 

542 

265

1,890

June

1,200 

1,100 

1,100 

1,170 

1,100

1,130 

1,340 

1,540 

1,500 

1,430

1,420 

1,480 

1,620 

1,620 

1,610

1,560 

1,410 

1,400 

1,410 

1,290

1,190 

1,210 

1,300 

1,230 

1,120

923 

879 

890 

818 

757

July

741 

718 

714 

719 

694

654 

652 

630 

586 

534

497 

450 

413 

394 

380

375 

375 

374 

371 

385

353 

345 

336 

336 

327

335 

334 

342 

333 

297 

284

Minimum

174 

160 

84

84

104 

121 

153 

353 

817 

757 

284 

216 

192

84

Aug.

271 

262 

250 

237 

223

217 

216 

217 

227 

264

356 

542 

421 

356 

319

304 

309 

360 

334 

399

298 

310 

304 

294 

302

298 

287 

272 

274 

270 

263

Mean

220 

191 

148

367

141 

144 

211 

467 

1,270 

1,258 

460 

295 

226

420

Sept.

253 

252 

265 

253 

343

235 

234 

236 

233 

230

223 

232 

330 

228 

233

224 

217 

214 

213 

226

226 

223 

224 

321 

211

206 

205 

200 

198 

192

Run-off in 

acre-feet

13,540 

11,390 

9,110

266,500

8,660 

7,990 

12,960 

27,820 

78,100 

74,870 

28,300 

18,140 

13,430

304,300
BIG WOOD RIVER BASIN 97

Big Wood River near Bellevue, Idaho

Location.- Water-stage recorder, lat. 430 19', long. 114°21', in sec. 20, T. 1 S., R. 18 

E., if miles upstream from flow line of Magic Reservoir, 3 miles upstream from Camas 

Creek, and 10 miles southwest o?f Bellevue.

Drainage area.- 823 square miles.

Records available.- July 1911 to September 1941 (except winters prior to 1940).

Extremes.- Maximum discharge during year, 1,270 second-feet May 27 (gage height, 3.16 

reet); minimum, 41 second-feet Oct. 19 (gage height, 1.29 feet).

1911-41: Maximum discharge recorded, 3,600 second-feet June 16, 1921 (gage height, 

6.07 feet), from rating curve extended above 2,800 second-feet; minimum recorded, 7 

second-feet Apr. 14, 1932 (gage height, 1.10 feet).

Remarks.- Records good except those for periods of ice effect, which are fair. Many 

diversions above station for irrigation.

Cooperation.- Gage-height record and results of six discharge measurements furnished by 

watermaster for Big Wood and Little Wood Rivers.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

S 

10

11

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

23

24 

25

26 

27 

2S 

29 

30 

31

Oct.

58 

58 

58 

56 

54

49 

49 

47 

45 

45

45 

45 

43 

43 

43

45 

45 

45 

49 

56

58 

60 

62 

62 

69

76 

86 

36 

88 

88 

81

HOT.

83 

83 

83 

83 

81

79 

88 

96 

91 

S8

93 

91 

91 

91 

91

93 

96 

96 

93 

a93

h93 

a90 

a90 

a95 

101

99 

96 

96 

101 

101

Dec.

99 

99 

101 

99 

99

96 

96 

96 

96 

93

91 

79 

69 

65 

56

54 

54 

54 

60 

67

36 

83 

79 

79 

69

62 

67 

60 

60 

60 

65

Jan.

b65 

b62 

b62 

62 

56

54 

56 

54 

54 

54

51 

51 

51 

51 

51

49 

49 

49 

49 

54

65 

71 

71 

74 

76

79 

74 

b70 

b70 

b70 

b70

Feb.

b75 

b75 

b75 

b75 

b75

79 

86 

91 

96 

99

101 

101 

96 

93 

96

96 

91 

96 

96 

96

96 

96 

99 

107 

107

99 

99 

104

Month

Oct 

Hoi 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Se]

t

alendar year 194 0......................

ater year 1940-

Mar.

115 

124 

124 

a!80 

a!20

a!20 

a!20 

a!20 

a!20 

a!30

a!30 

a!30 

a!30 

a!30 

a!30

a!30 

a!30 

a!30 

a!40 

a!40

a!50 

158 

151 

151 

147

138 

13S 

141 

147 

158 

154

Apr.

162 

189 

193 

189 

211

193 

181 

181 

185 

230

230 

207 

207 

225 

255

298 

298 

2S1 

255 

244

239 

244 

260 

304 

346

352 

406 

471 

55S 

660

Secondfoot-days

1,794 

2,745 

2,393

65,535

1,374 

2,595 

4,166 

8,254 

24,167 

20,993 

5,138 

3,391 

2,912

80,422

a. Ho gage-height record; discharge computed on basla 

stations, 

b Stage-discharge relation affected by Ice. 

h Computed from staff-gage reading.

Bay

696 

705 

732 

804 

786

714 

617 

574 

501 

456

471 

687 

1,010 

1,100 

948

786 

660 

786 

777 

634

534 

617 

786 

957 

1,030

1,140 

1,240 

1,070 

894 

750 

705

Maximum

88 

101 

101

1,360

79 

107 

158 

660 

1,240 

957 

386 

255 

113

1,240

June

643 

566 

517 

566 

550

550 

741 

957 

939 

840

822 

840 

939 

921 

921

885 

804 

768 

795 

759

678 

678 

741 

696 

600

4S6 

456 

493 

463 

379

July

386 

372 

372 

359 

328

281 

260 

239 

207 

174

154 

141 

124 

113 

104

96 

88 

91 

99 

99

99 

91 

93 

96 

99

96 

101 

101 

96 

93 

86

Aug.

79 

76 

74 

76 

81

86 

83

79 

79 

36

12S 

255 

225 

154 

128

118 

107 

113 

113 

104

99 

96 

96 

101 

107

107 

107 

107 

110 

110 

107

Minimum Mean

43 57.9 

79 91.5 

54 77.2

25 179

49 6O.5 

75 92.7 

115 134 

162 275 

456 780 

379 700 

86 166 

74 109 

81 97.1

43 220

Sept.

104 

107 

110 

113 

113

110 

107 

110 

101

ss

88 

91 

88 

88 

96

96 

101 

96 

93 

96

93 

93 

96 

99 

96

93 

91 

88 

86 

81

Run-off In 

acre-feet

3,560 

5,440 

4,750

130,000

3,720 

5,150 

8,260 

16,370 

47,930 

41,640 

10,190 

6,730 

5,780

159,500

of weather records and records for nearby
98 BIO WOOD RIVER BASIN

Magic Reservoir near Richfield, Idaho

Location.- Staff gage at dam on Big Wood River, lat. 43°15'-, long. 114°22«, In NEiSEi sec.

 18, T. 2 S., R. 18 E,, 18 miles northwest of Richfield. Datum of gage is referred to 

datum of Idaho Irrigation Co., which Is reported to be about 137 feet below mean sea 

level.

Drainage area.- 1,500 square miles.

Records available.- February to April 1909 (gage heights only), April 1909 to September 1941. 

Extremes.- Maximum contents during year, 192,700 acre-feet May 29, 30, June 9-20 (gage

 height, 4,935.3 feet); minimum, 82,670 acre-feet Oct. 1 (gage height, 4,897.7 feet). 

1909-41: Maximum contents, those of May 29, 30, June 9-20, 1941; no storage for 

several days In 1909, 1919, 1920, 1924, 1928, 1935.

Remarks.- Reservoir is formed by earth and rock-fill dam, completed In 1909 and raised 5

 TeeT"ln 1917. Capacity, 191,500 acre-feet, between gage heights 4,821.4 feet (2.9 fe«t 

above bottom of outlet pipe) and 4,935.0 feet (top of flash boards, 5 feet above crest 

of spillway). Dead storage unknown. Water Is used for Irrigation of lands In Carey 

Act project of Big Wood Canal Co. Figures given herein represent usable contents. 

Gage read twice dally; contents computed from morning reading.

Cooperation.- Gage-height record and capacity table furnished by watermaster for Big Wood 

and Little Wood Rivers.

Contents, In acre-foot, water year October 1840 to September 1P41

D»T

i

2

S

4

5

6

7

8

9

10

11

18

IS

14

16

16

17

18

IP

80

21

88

23

84

86

86

87

88

89

SO

SI

Oct.

S3 ,670

82,880

63,100

83,880

83,380

83 ,320

63,630

63,630

83,760

63,760

83,760

03,970

03,970

04,190

84,190

04,410

64,410

84,410

84,630

64,630

84,630

84,860

06,070

66,070

36, SCO

86,610

86,730

86,730

66,960

86,170

86,400

HOT.

86,620

86,620

66,840

07,060

07,290

87,610

87,730

87,960

86,180

88,410

88,640

66,660

88,860

89,090

89,320

89,640

09,770

89,990

89,990

90,220

89,640

68,860

68,180

68,180

88,410

68,640

88,860

89,090

89,320

39,640

-

D«o.

09,770

69,990

90,220

90,450

90,680

90,910

91 ,140

91,370

91,600

91,830

92,060

92,060

92,290

92,890

92,620

92,620

92,760

92,980

93,280

93,220

93,460

93,680

93,980

94,160

94,380

94,680

94,850

96,090

96,090

96,380

96,660

Jan.

96,660

96,560

86,800

96,800

90,270

96,600

96,600

96,600

96,740

96,740

96,740

96,740

96,980

97,280

97,460

97,460

97,690

97,690

97,930

97,930

98,170

98,410

98,660

98,650

98,890

99, ISO

99,370

99,680

99,680

99,680

99,680

Feb.

99,680

100,300

100,300

100,600

100,600

100,800

101,300

101,800

101,800

102,000

102,300

102,800

103,000

103,300

108,300

103,600

103,800

104,000

104,300

104,600

104,800

106,000

106,800

106,606

106,600

106,800

106,000

106,600

_

-

Mar.

106,800

107,000

107,300

107,800

108,000

108,500

108,800

109,300

109,600

110,100

110,300

110,800

111,100

111,600

112,100

112,400

112,900

118,700

114,600

116,300

116,800

117,500

118,700

119,800

180,900

121,900

185,500

124,400

126,800,.

188,000

130,800

Apr.

132,800

186,100

187,400

140,100

142,600

144,400

146,600

148,100

149,700

161,700

168,800

166,300

167,800

169,300

161,000

162,400

163,400

164,800

166,800

167,200

168,000

169,400

170,100

170,800

171,600

171,900

178,200

172,600

173,300

174,400

-

»«T

176,800

176,300

177,000

178,100

176,900

179,600

180,400

181,100

181,900

181,900

181,900

182,800

162,600

183,600

184,900

186, '100

186,400

186,800

187,600

187,600

188,000

188,000

188,000

188,400

189,200

109,900

190,700

191,900

192..700

192,700

192,300

June

192,300

191,900

191,600

181,600

191,500

191,100

191,600

191,900

192,700

182,700

192,700

198,700

192,700

192,700

198,700

192,700

192,700

192,700

192,700

192,700

192,800

192,300

198,300

191,900

191,900

191,600

191,100

190,300

189,900

189,800

-

July

188,400

187,600

188,000

189,800

189,600

189,900

188,800

187,600

186,400

186,900

184,100

183,000

181,600

180,000

178,900

177,400

176,900

174 ,100

178,500

171,800

169,700

168,500

166,900

166,600

164,100

168,000

162,000

160,600

169,300

158,300

167,300

Aug.

166,900

164,900

168,600

162,600

161,700

150,700

149,400

148,100

146,900

146,900

146,000

144..400

148*600

148,800

142,800

141,300

140,700

140,100

139,600

138,900

188,500

187,400

156,800

186,800

135,700

186,100

134,800

133,600

133,100

132,500

131,900

Sept.

1S1,100

180,506

189,700

189,100

188,800

127,700

126,900

186,300

126,800

184,900

184*100

125,600

188,700

181*900

181,100

180,800

119.800

119*000

118,400

117,600

116*800

116*000

116,600

116*000

114,800

118,700

118,800

112,400

111,900

111,100

"

Monthly gage height and contents, water year October 1940 to September 1941

Date

Oct. 31...................

Dec. 31...................

Calendar year 1940......

Kar. 31...................

Kay 31........ . .. .

July 31......... . .. ..

Sept. 30...................

Water year 1940-41.......

Qage height 

(feet)

97.6 

99.4 

100. e 

103.4

-

106.1 

107.9 

116.8 

130.6 

136.2 

134.4 

185.6 

117.4 

109.7

-

Contents 

(acre-feet)

82,460 

86,400 

89,540 

95,660

-

99,620 

106,600 

130,200 

174,400 

198,300 

189,200 

167,300 

131,900 

111,100

-

Change In contents 

during month 

(acre-feet

+3,950 

+3,140 

+6,020

+38,170

+4,060 

+6,880 

+23,700 

+44,200 

+17,900 

-3,100 

-31,900 

-26,400 

-20,800

+28,660
BIQ WOOD RIVER BASIN 99

Big Wood River below Magic Dam, near Richfield, Idaho

Location.- Water-stage recorder, lat. 43°14', long. 114°22', in sec. 18, T. & S., R. 18 E., 

hair a mile downstream from Magic Dam and 18 miles northwest of Richfield.

Records available.- April 1911 to September 1941. 

Average discharge.- 29 years (1912-41), 380 second-feet.

Extremes.- Maximum discharge during year, 1,140 second-feet June 15 (gage height, 4.81 

feet;; minimum, 10 second-feet Nov. 24-29, Dec. 15-22, 25, 26, Dec. 28 to Jan. 4, Jan. 

6-21, Jan. 26 to Feb. 6; minimum gage height, 1.41 feet Jan. 15.

1911-41: Maximum discharge, 5,610 second-feet Apr. 21, 1938 (gage height, 11.55 

feet); no flow Feb. 3, 1915.

RemarKa.- Records good. Many ranch diversions in upper drainage area. Flow regulated by 

HagTc Reservoir (see p. 98 ).

Cooperation.- Gage-height record and six discharge measurements furnidied by watermaster 

for Big Wood and Little Wood Rivers.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z 

3

4

e

6 

7 

8 

9 

10

11 

12 

13 

14ie

16 

17ie

19 

20

81 

22 

25 

24 

25

26 

27 

28 

29 

30 

31

Oct.

12 

12 

12 

12 

13

13 

13 

13 

13 

12

12 

12 

12 

12 

12

12 

12 

12 

12

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12 

12

HOT.

12 

12 

12 

12 

12

12 

12 

12 

12 

11

11 

12 

12 

12 

12

12 

12 

12 

12 

360

460 

445 

167 

10 

10

10 

10 

10 

10 

11

Dec.

11 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

11 

11 

11 

10

10 

10 

10 

10 

10

10 

1011 11

10 

1011

10 

10 

10 

10

Jan.

10 

10 

10 

10

11

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10

1011 11 11 11

10 

10 

10 

10 

10 

10

Feb.

10 

10 

10 

10 

10

10

11 11 11 11

11 11 11 11 11

11 11 11 11 11

11

12 

12 

12 

12

12 

12 

12

Month

Oct 

Not 

Doc

C

Jaz 

Pet 

Hai 

Api 

Maj 

Jur 

Ju3 

Aug 

Sei

H

alendar year 194 0................ ......

rater year 1940-4n. .....................

Mar.

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

13 

13 

13 

13

Apr.

14 

14 

14 

14 

13

14 

14 

14 

14 

14

14 

14 

14 

15 

15

15 

15 

16 

16 

16

16 

17 

79 

268 

312

360 

360 

394 

412 

460

Secondfcot-days

377 

1,729 

327

93,299

315 

309 

376 

2,967 

21,126 

25,518 

21,864 

16,651 

13,648

105,209

May

500 

505 

535 

557 

574

579 

579 

612 

623 

623

640 

672 

667 

684 

684

689 

689 

700 

706 

689

672 

667 

694 

706 

706

700 

744 

854 

1,000 

980 

898

Maximum

13 

460 

11

838

11 

12 

13 

460 

1,000 

1,110 

876 

694 

505

1,110

June

843 

782 

716 

700 

689

660 

672 

788 

958 

997

986 

986 

1,010 

1,050 

1,110

1,030 

920 

876 

904 

870

826 

782 

766 

f826 

h772

f77P 

h794 

f814 

f821 

h821

July

832 

f210 

h24 

a25 

26

f677 

h826 

f806 

810 

826

832 

832 

832 

832 

843

860 

865 

876 

854 

838

838 

826 

821 

810 

782

755 

738 

722 

706 

684 

656

Minimum

12 

10 

10

7

10 

10 

12 

13 

500 

650 

24 

422 

194

10

Aug.

646 

645 

640 

640 

640

656 

684 

689 

694 

689

h689 

{656 

f608 

h557 

f512

500 

480 

f447 

h435 

h435

h435 

h430 

h426 

h426 

h426

h422 

h422 

h422 

h426 

h435 

h440

Mean

12.2 

57.6 

10.5

255

10.2 

11.0 

12.1 

98.9 

682 

851 

705 

537 

455

288

Sept.

h440 

h440 

f457 

465 

465

465 

h465 

h465 

f470 

475

475 

475 

475 

495 

505

485 

475 

475 

475 

475

475 

475 

455 

450 

445

450 

435 

426 

426 

194

Run-off In 

acre-feet

743 

3,430 

649

185,100

625 

613 

746 

5,880 

41,910 

50,610 

43,370 

33,030 

27,070

206,700

a No gage-height record; discharge Interpolated.

f Fragmentary gage-height record; discharge computed from partially estimated gage heights.

h Computed from staff-gage readings.
100 BIG WOOD RIVER BASIN

Big Wood River at Goodlng, Idaho

Location.- Water-stage recorder, lat. 42°57', long. 114 043', in NEiNEi sec. 31, T. 5 

S., R. 15 E., 30 feet downstream from highway bridge and half a mile north of Gooding.

Records available.- June 1896 to October 1899 (published as Malade River at Toponis, 

Idaho), ana April 1921 to September 1940, except for winters.

Extremes.- Maximum discharge recorded during year, 204 second-feet Apr. 23 (gage height, 

2.44 feet); probably no flow for long periods.

1921-41: Maximum discharge recorded, 3,900 second-feet Apr. 23, 1938 (gage height, 

8.48 feet), from rating curve extended above 3,200 second-feet; no flow for long 

periods in each year.

Remarks.- Records good. Many diversions above and below station for irrigation. Plow 

regulated by Magic Reservoir (see p. 98 ) and affected by deliveries from MllnerGoodlng canal which diverts from Snake River.

Cooperation.- Gage-height record and results of three-discharge measurements furnished by 

watermaster for Big Wood and Little Wood Rivers.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

42 

2 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Nov. Dec. Jan. Feb.

Month

Get 

Not 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

V

alendar year

ater year

Mar. Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

46 

55 

54 

51 

46

39 

36 

34 

36 

38

32 

23 

130 

66 

113

109 

9S 

116 

102

73

Secondfoot -days

44

-

1,297 

1,954 

2,477 

2,209 

922 

1,453

-

May

67 

67 

69 

60

77

S5 

S5 

S9 

75 

66

60 

57 

49 

37 

37

30 

27 

22 

40 

64

67 

66 

51 

49

46

57 

79 

81 

100 

93 

102

Maximum

42

-

130 

102 

142 

91 

71 

S9

-

June

107 

104 

104 

9S 

96

96 

111 

13S 

138 

142

133 

135 

113 

S3 

59

52 

54 

73 

69 

59

49 

39 

34 

3S 

42

46 

52 

59 

75 

79

July

81 

79 

71 

55 

59

46 

4S 

54 

52 

51

66 

67 

73 

69 

67

69 

66 

71 

91

S7

91 

79 

77 

77 

75

79 

SI 

S7 

85 

79 

77

Minimum

0

-

0 

22 

34 

46 

12 

29

-

Aug.

71 

59 

49 

49 

40

33

35 

14 

14 

12

15 

27 

36 

27 

22

21 

18 

27 

25 

16

17 

2S 

31 

35 

32

30 

29 

31 

27 

h23 

h29

Mean

1.4

-

43.2 

63.0 

82.6 

71.3 

29.7 

4S.4

-

Sept.

h29 

h33 

h32 

h42 

h42

44 

40 

b.43 

b.42 

h40

52 

79 

B9 

87 

79

60 

62 

64 

49 

37

33 

hS4 

40 

59 

46

h4S 

43 

36 

35 

h34

Run- off In 

acre-feet

87

-

2,570 

3,880 

4,910 

4,3SO 

1,330 

2.SSO

-

h Computed from staff-gage readings.
BIO WOOD RIVER BASIN 101

Big Wood River near Goodlng, Idaho

Location.- Water-stage recorder, lat. 42°54', long. 114°48', in sec. 21, T. 6 S., R. 14 

E., at Hudson Ranch, 2 miles dovrastream from bridge on Bliss-Goodlng highway, '6$ miles 

downstream from Little Wood River, 5 miles upstream from diversion dam for King Hill 

project, and 6 miles southwest of Goodlng.

Records available.- March 1916 to September 1941 (no winter records prior to 1936). 

Average discharge.- 10 years, Q.916-22, 1937-41), 171 second-feet.

Extremes.- Maximum discharge during year, 298 second-feet Apr. 23 (gage height, 3.05 feet); 

no flow at times during October, November, and January.

1916-41: Maximum discharge, 3,810 second-feet Apr. 23, 1938, from rating curve extended above 3,200 second-feet; maximum gage height, 9.00 feet Mar. 17, 1922; no flow 

at times in each year.

Remarks.- Records good except those for Dec. 10 to Feb. 10, which are poor. Diversions 

above and below station for irrigation . Flow regulated by Magic Reservoir (see 

p. 98 ) and affected by deliveries from canals diverting from Snake River at Milner.

Cooperation.- Gage-height record for April to September and results of two discharge

measurements furnished by water-master for Big Wood and Little Wood Rivers. Gage-height 

record for October to March furnished by North Side Canal Co., Ltd.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

£6 

27 

28 

29 

30 

31

Oct.

110 

71 

51 

48 

4S

33 

20 

17 

8 

6

2 

1 

0 

0 

0

1 

13 

20 

14 

11

7 

8 

13 

13 

14

17 

16 

15 

14 

3 

1

Nov.

1 

2 

4 

4 

3

5 

6 

16 

18 

20

22 

21 

18 

20 

38

40 

34 

34 

89 

117

175 

187 

117 

162 

158

114 

83 

91 

89 

89

Dec.

32

32 

31 

*34 

30

29 

30 

30 

29 

23

V blO

*b20 

b40 

57

64 

49 

57 

46 

52

48 

b50 

b45 

40 

40 

26

Jan.

25 

17 

blO 

bl 

bO

0 

b2 

b!5 

b20 

35

34 

41 

39 

30 

 30

24 

bSO 

22 

22 

50

32 

24 

21 

22 

25

27 

21 

b25 

b25 

b25 

b25

Feb.

b25 

b25 

b30 

b35 

b35

b45 

43 

40 

43 

51

57 

 132 

207 

155 

96

83 

68 

55 

52 

48

46 

55 

83 

135 

150

90 

56 

43

Month

Oct 

Non 

Dec

C

Jan 

Fet 

Mar 

Apr 

Maj 

Jun 

Jul 

Aug 

Sep

VI

alendar year 194

ater year 1940-4

Mar.

61 

129 

117 

85 

67

70 

69 

71 

75 

65

63 

61 

53 

51 

48

41 

4S 

46 

30 

31

33 

35 

38 

37 

30

30 

22 

12 

4 

3 

2

Apr.

3 

9 

10 

10 

13

39 

41 

66 

67 

24

40 

78 

78 

74 

56

30 

30 

25 

31 

48

44 

23 

163 

155 20"

189 

156 

167 

143 

93

Secondfoot-days

595 

1,777 

1,004

25,009

589 

1,988 

1,527 

2,112 

1,452 

2,316 

1,286 

1,421 

1,728

17,895

May

72 

47 

53 

40 

42

60 

67 

77 

72 

55

49 

41 

32 

17 

20

23 

21 

16 

36 

55

55 

48 

31 

82 

12

20 

59 

59 

77 

S9 

35

Maximum

110 

187 

64

1,120

41 

207 

129 

207 

89 

820 

77 

64 

78

220

June

93 

93 

91 

38 

81

76 

114 

804 

220 

207

196 

160 

129 

82 

40

22 

20 

3S 

48 

34

21 

17 

18 

13 

13

20 

29 

35 

48 

66

July

54 

43 

34 

20 

14

14 

17 

16 

21 

23

26 

32 

40 

40 

27

26 

27 

30 

48 

51

56 

46 

44 

49 

58

59 

66 

77 

75 

76 

77

Minimum

0

1

0

0 

25 

2 

3 

12 

13 

14 

22 

28

0

Aug.

80 

67 

57 

56 

54

47 

44 

42 

33 

34

37 

55 

76 

84 

69

42 

40 

44 

53 

34

22 

33 

36 

36

37

39 

40 

35 

31 

32 

32

Mean

19.2 

59.2 

32.4

68.3

22.2 

71.0 

49.3 

70.4 

46.8 

77.2 

41.5 

45.8 

57.6

49.0

Sept.

36 

37 

51 

61 

63

56 

53 

51 

55 

59

51 

70 

76 

76 

75

58 

51 

54 

37 

28

29 

42 

55 

77 

78

76 

75 

69 

63 

66

Run-off in 

acre-feet

1,180 

3,520 

1,990

49,600

1,370 

3,940 

3,030 

4,190 

2,880 

4,690 

2,550 

2,820 

3,430

35,490

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
ice BIO WOOD RIVER BASIN 

Warm Springs Creek at Guyer Hot Springs, near Ketchum, Idaho

Location.- Staff gage, lat. 43°41', long. 114°25', In NEi sec. 15, T. 4 N., R. 17 E.,

 at Buyer Hot Springs, 2.1/8 miles upstream from mouth and 2.2 miles west of Ketchum.

Drainage area.- 96 square miles.

Records available.- November 1940 to September 1941. May 1920 to September 1921 at site

 one-quarter mne downstream, published as Warm Springs Creek near Ketchum, Idaho; records not equivalent.

Extremes.- Maximum discharge observed during period, 400 second-feet May 13 (gage height,

 2.68 feet); minimum observed, 18 second-feet Feb. 26 (gage height, 0.89 foot).

Remarks.- Records good except those for period July 27 to Sept. 30, which are fair.

 Diversions above and below station for Irrigation. Gage read twice, dally November to 

July 26; once dally Aug. 8 to Sept. 30.

Rating table, water year 1940-41 (gage height, In feet, and discharge,

In second-feet) 

(Shifting-control method used Mar. 4 to May 13)

0.9 19 1.4 73 2.1 216 

1.0 26 1.6 107 2.4 300 

1.2 46 1.8 147 2.7 400

Discharge, In second-feet, water year October 1940 to September 1941

Day

i

2 

3

4 

5

6

7 

S 

9 

10

11 

12 

13 

14

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

30 

33 

31

30 

30 

30 

30 

29

30 

28 

2S 

28 

28

25 

27 

25 

22 

21

23 

26 

2S 

28 

28

28 

30 

30 

30 

30

30 

31 

30 

30 

30 

29

28 

23 

31 

30 

30

323'1 

30 

30 

28

28 

26 

29 

30 

.28

25 

26 

30 

28 

28

28 

28 

28 

28 

28

28 

30 

26 

28 

25 

25

23 

26 

26 

26 

25

26 

31 

30 

30 

30

30 

30 

28 

26 

29

29 

30 

30 

30 

28

'28 28 

2S. 

29 

26

20 

28

30

Month

Oet 

NOT 

Dec

c

Jar 

Fet 

Mai 

Api

Jui 

JvO 

Aug 

Sei

T

alendar year

tie perlo

31 

28 

29

30 

30

29 

30 

31 

32 

30

32 

34

32 

26

30

34 

40 

47 

50 

47

47 

50 

aSl 

a61 

62

56 

63 

69 

69 

69 

69

AJ--

66 

72 

70 

69 

67

63 

63 

62 

67 

72

66 

70 

75 

78 

94

94 

87 

78 

75 

72

72 

72 

81 

98 

93

102 

126 

146 

169 

187

Secondfoot -days

871

-

873 

778 

1,316 

2,605 

7,853 

5,147 

1,914 

1,523 

1,142

-

192 

192 

216 

229 

216

192 

178 

186 

183 

192

242 

330 

382 

348 

300

2S6 

270 

236 

256 

242

242 

256 

270 

285 

300

300 

316 

270 

242 

229 

229

Maximum

31

-

32 

31 

69 

187 

382 

229 

94 

79 

41

-

216 

192 

204 

204 

187

185 

216 

229 

229 

204

204 

204 

204 

204 

192

183 

171 

169 

180 

165

143 

141 

128 

122 

118

111 

111 

122 

109 

100

July

94 

89 

86

83 

79

78 

72 

70 

67 

66

66 

66 

60 

68 

58

66 

66 

62 

64 

69

55 

51 

60 

47 

47

47 

I a50

Aug.

| a46

I a40

40 

a52 

65

a72 

79 

56

I a&O 

59 

> a50

61 

a48 

46

a46 

46 

a44 

42 

a41 

a41

Sept.

a41 

40 

a40 

a40 

40

a40 

a40 

a39 

39 

a38

37 

a38 

39 

a39 

39

a 38 

38 

a38 

a38 

a38

a38

a37 

a37 

a37

37

a36 

a36

36 

a36 

36

Minimum «ean ^feet"

21 28.1 1,730

-

23 28.2 1,730 

20 27.8 1,640 

26 42.5 2,610 

62 86.8 5,170 

178 253 15,680 

100 172 10,210 

 61.7 3,800 

49.1 3,020 

36 38.1 2,270

47,660

a No gage-height record; discharge Interpolated or computed on basis of record for Big Wood 

River at Halley and Big Wood Slough near Halley.
BIO WOOD RIVER BASIN 103

Big Wood Slough at Hailey, Idaho

Location.- Water-stage recorder, lat. 43°31', long. 114°19'30" In sec. 9, T. 2 N., R. 

iri £., at highway bridge, an eighth of a mile northeast of steel highway bridge over 

Big Wood River, and an eighth of a mile southwest of Hailey.

Records available.- June 1915 to September 1941. 

Average discharge.- 26 years, 114 second-feet.

Extremes.- Maximum discharge during year, 297 second-feet Apr. 14 (gage height, 3.52 

feet); minimum, 48 second-feet Nov. 13 (gage height, 1.80 feet).

1915-41: Maximum discharge observed, 419 second-feet June 6, 1921, from rating 

curve extended above 280 second-feet; maximum gage height, 5.55 feet (elevation of 

top of ice In well) Jan. 20-23, 1937; no flow May 8, 1931, Oct. 20 to Nov. 3, 1938.

Remarks.- Records good. Flow affected by Hal'ley power plant half a mile upstream. Big 

wooa Slough, a natural channel of Big Wood River, Is utilized as a tallrace for the 

power plant, and its discharge plus the discharge of Big Wood River at Hailey, Idaho, 

equals the total flow of river at this point.

Cooperation.- Gage-height record April to September furnished by watermaster for Big and 

Little wood Rivers.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

810

239

272

239

823

215

205

199

196

192

1S6

184

184

198

199

194

1S7

184

181

173

173

173

172

172

188

190

129

1E7

123

122

160

NOT.

a215

215

215

210

199

204

209

209

205

190

1SS

16S

160

176

184

1S8

19S

204

183

182

193

176

15S

163

1S2

170

15S

168

175

174

-

Dec.

16S

166

169

166

163

163

163

15S

153

144

116

103

8S

32

90

101

129

146

148

147

153

156

162

164

163

157

169

143

139

' 151

157

Jan.

112

117

103

120

139

143

151

151

150

143

150

144

146

154

153

148

139

151

151

150

150

150

146

143

140

140

120

117

129

129

130

Feb.

133

140

139

139

140

144

153

153

151

151

151

151

137

144

147

146

146

147

147

144

141

141

141

144

136

120

alSO

a!40

_

_

-

Month

October. ...................................

November. ..................................

December. ..................................

Calendar year 1940 ......................

January. ...................................

February. ..................................

March. .....................................

April................................... ...

May. .......................................

June .......................................

July...................... .................

August. ....................................

September. .................................

fater year 1940-41 ......................

Mar.

163

160

153

156

151

151

151

153

166

164

170

176

16S

162

164

176

180

196

209

215

215

223

223

223

223

223

223

215

194

192

192

Apr.

190

192

194

194

194

194

193

194

184

184

193

215

223

215

223

223

205

199

199

202

199

201

201

201

209

205

204

204

204

184

-

Secondfoot-clays

5,789

5,624

4,462

41,777

4,314

3,996

5,735

6,027

5,879

5,770

5,901

5,920

6,116

65,563

May

157

175

137

184

190

192

204

h207

h207

201

196

193

207

1S8

186

17S

172

184

184

178

174

hi SO

204

ISO

173

190

207

190

199

202

190

Maximum

272

215

169

272

154

153

223

223

207

223

213

239

212

272

June

190

192

192

192

192

190

202

223

215

210

201

204

ass

215

210

201

194

17S

186

1S1

178

174

188

187

174

163

176

176

176

1S2

-

July

196

198

194

194

192

184

182

187

190

187

176

1S1

186

1S1

172

180

202

213

198

182

180

184

1S4

184

199

209

204

199

198

193

192

Aug.

Minimum Mean

122

15£

187

187

82 145

1

102

114

139

120 143

151 185

184 201

157 190

168 192

172 190

13£

186

82

191

204

180

181

181

180

187

139

133

132

133

153

192

204

239

231

215

213

209

205

210

212

202

196

196

194

194

196

198

199

198

198

198

202

Sept.

210

210

212

210

209

210

209

207

207

205

202

202

201

199

201

204

201

201

202

210

212

200

210

207

201

198

196

193

192

186

-

Run-off in 

acre-feet

11,480

11,160

S,890

82,880

8,560

7,930

11,380

11,950

11,660

11,440

11,700

11,740

12,130

130,000

a Ho gage-height record) discharge computed on basis cf weather records and records for 

stations. 

h Computed from staff-gage readings.

nearby
104 BIG WOOD RIVER BASIN

Cainas Creek near Blaine, Idaho

Location.- Water-stage recorder, lat. 43°20', long. 114°33', in sec. 15, T. 1 S., R. 16 E., 

a quarter of a mile north of Macon siding on Hill City branch of Oregon Short Line R. R., 

three-eighths of a mile downstream from Willow Creek, 2i miles upstream from backwater 

of Magic Reservoir, and 4 miles southeast of Blaine.

Drainage area.- 618 square miles.

Records available.- May 1912 to September 1941, except for winters. Discharge measurements only for 1922.

Extremes.- Maximum discharge during year, 1,060 second-feet Mar. 31 (gage height, 5.73 

feet;; minimum recorded, 2.8 second-feet Aug. 11 (gage height, 1.02 feet).

1921-41: Maximum discharge recorded, 8,690 second-feet about Apr. 18, 1938 (gage 

height, 15.48 feet, from floodrrtark), from rating curve extended above 6,000 secondfeet; minimum recorded, 1.5 second-feet Aug. 29, 1940.

Remarks.- Records good. Many small diversions above station; no appreciable regulation.

Cooperation.- Gage-height record and three measurements furnished by water-master for Big 

Wood and Little Wood Rivers.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21

OQ

23 

24 

26

26 

27 

2S 

29 

30 

31

Oct.

3.6 

9.9

13 

5.4 

4.2

3.8 

3.4 

3.4 

3.4 

3.4

3.3 

3.3 

3.1 

3.1 

3.3

3.4 

3.3 

3.3 

3.3 

3.3

3.3 

3.3 

3.4

Nov. Dec. Jan. Feb.

23 

21

18 

18 

24

Month

Dot 

NOD 

Dec

C

Jan 

Fet 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Se]

fl

ober 1-2

alendar year

ruary 34 

ch. . 

 28

ater year

Mar.

27 

32 

32 

39 

45

45 

46 

46 

47 

55

61 

66 

66 

63 

P8

82 

114 

153 

161 

179

252 

282 

291 

352 

378

405 

446 

502 

709 

982 

1,060

Apr.

948 

912 

965 

895 

808

774 

808 

588 

516 

574

588 

842 

709 

588 

474

418 

378 

352 

299 

272

250 

. 239 

234 

234 

234

239 

241 

245 

259 

272

Secondfoot-days

96.2

-

104 

7,086 

15,155 

6,839 

2,813 

313.1 

148.1 

159.9

-

May

296 

296 

306

311 

318

316 

294 

282 

263 

247

239 

239 

252 

266 

270

254 

236 

217 

202 

187

171 

151 

136 

126 

126

132 

140 

145 

155 

136 

130

Maximum

13

-

24 

1,060 

965 

318 

147 

37 

18 

7.5

-

June

136 

123 

117 

109 

104

97 

112 

126 

145 

147

132 

IIP 

107 

95 

98

95 

97 

97 

100 

97

90 

84 

73 

60 

51

46 

40 

41 

39 

36

July

37 

36 

33 

27 

22

19 

16

12 

10 

8.4

7.1 

6.2 

6.0 

5.8 

5,1

4.9 

4.6 

4.4 

4.2 

4.4

3.8 

3.9 

3.4 

3.4 

3.3

3.6 

3.6 

4.2 

4.1 

3.4 

3.3

Minimum

3.1

-

18 

27 

234 

126 

36 

3.3 

3.0 

3.P

-

Aug.

3.1 

3.0 

3.1 

3.1 

3.0

3.0 

3.0 

3.0 

3.0 

3.0

18 

13 

7.1 

6.4 

5.3

3.8 

3.6 

4.2 

5.1 

4.4

4.2 

4.1 

4.2 

4.1 

4.1

4.1 

4.4 

4.9 

4.4 

4.2 

4.2

Mean

4.18

-

20.8 

229 

505 

221 

93.8 

10.1 

4.78 

5.33

-

Sept.

4.2 

4.2 

4.2 

4.2 

4.2

4.1 

4.1 

4.2 

4.2 

4.1

3.8 

3.8 

3.6 

4.2 

4.9

5.5 

5.5 

5.5

5.7 

5.7

6.0

6.6 

7.1 

7.5 

7.3

7.3 

7.1 

6.9 

7.1 

7.1

Run- off in 

acre-feet

191

-

206 

14,050 

30,060 

13,560 

5,580 

621 

294 

317

-
BIG WOOD RIVER BASIN 105

Lincoln canal near Richfield, Idaho

Location.- Water-stage recorder, lat. 43°10', long. 114°19', In sec. 9, T. 35., R. 18

 E., at head of canal, 100 yards east of Shoshone-Halley highway, 5i miles downstream 

from Magic Dam, and 12 miles northwest of Richfield.

Records avallable.- April 1925 to September 1941 (prior to 1937, irrigation seasons 

only).

Extremes.- Maximum discharge during year, 226 second-feet June 28; maximum gage height, 

STETTTeet Aug. 11; no flow for long periods.

1925-41: Maximum discharge, 706 second-feet May 28, 1927 (gage height, 4.00 feet), 

from rating curve extended above 600 second-feet; no flow during long periods in each 

year.

Remarks.- Records good. Canal diverts water from right bank of Big Wood River In sec. 9,

 T. 3 S., R. 18 E., from which point it approximately parallels river for 10 miles to 

head of North Goodlng canal In sec. 15, T. 4 S., R. 18 E., where water is either 

diverted Into North Gooding canal or returned to Big Wood River. Canal is used to 

avoid large channel losses in natural bed of river. No diversions above gage.

Cooperation.- Gage-height record and results of five discharge measurements furnished by 

wate master for Big Wood and Little Wood Rivers.

Discharge, in second-feet, water year October 194O to September 1941

Day! Oct .

1

2

3

4

5

6

7

a

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Nov.

0

0

0

0

0

! o

0

0

0

0

0

0

0

0

o

o

0

0

0

56

138

136

78

0

0

0

0

0

o

0

-

Dec. Jan. Feb.

Month

March. .....................................

May. .......................................

July. ......................................

September. .................................

Water year 1940-41 ......................

Mar. Apr.

0

0

0

0

0

0

0

0

O

0

0

0

0

0

0

0

o

0

0

0

0

0

0

41

. 118

145

153

156

159

164

May

162

162

165

170

170

164

161

157

156

157

156

177

159

164

157

159

159

161

164

162

156

153

154

161

161

159

170

187

189

189

1S6

forays » 

0 0

408 138

0 0

3,943 145

25,511 212

June

1S6

184

1S1

 181

176

161

162

167

157

156

153

167

176

176

176

176

174

172

174

179

182

179

184

194

186

184

191

201

196

198

Minimum

0

0

0

82

0

July

201

117

0

0

0

120

191

1S6

194

210

212

212

210

210

210

212

212

192

186

181

1S1

181

177

177

164

162

162

162

157

154

142

Aug.

Mean

0

13'. 6

0

165

164

131

69.9

140

140

142

144

144

176

199

208

208

20S

21 0

201

192

177

13S

132

13fi

122

Ifll

126

127

Sept.

128

126

127

127

130

132

132

133

134

133

132

133

133

136

145

144

142

140

142

142

140

128 1 140

130 . 138

132

133

134

134

136

133

130

132

128

130

130

127

120

117

S2

Run-off In 

acre-feet

S09

0

7,820

50,610
106 BIO WOOD RIVER BASIN 

Lincoln canal near Shoshone, Idaho

Location.- Water-stage recorder, lat. 43°05', long. 114°19', in sec. 15, T. 48., R. 18 

£., a. Quarter of a mile upstream from outlet or canal, 7 miles west of Richfield, 11 

miles northeast of Shoshone, and 12i miles downstream from Magic Dam.

Records available.- May 1925 to September 1941 (1929-36, irrigation seasons only).

Extremes.- Maximum discharge during year, 193 second-feet July 17 (gage height, 1.26 feet); 

no now for long periods.

1925-41: Maximum discharge, 667 second-feet May 29, 1927 (gage height, 2.48 feet), 

from rating curve extended above 550 second-feet; no flow for long periods each year.

Remarks.- Records good. Canal diverts water from right bank of Big Wood River in sec. 9, 

T. 3 S., R. 18 E., from which point It approximately parallels river for 10 miles to 

head of North Qooding canal in sec. 15, T- 48., R. 18 E., where water is either 

diverted into North Ooodlng canal or returned to Big Wood River. Canal Is used to 

avoid large channel losses in natural bed of river. Five ditches have rights to divert 

12.5 second-feet above this station for Irrigation.

Cooperation.- Gage-height record and results of two discharge measurements furnished by 

waternasfer for Big Wood and Little Wood Rivers.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

18

17ie

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

18

ta

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

99

108

108

15

0

0

0

0

0

0-

Dec. Jan. Feb.

Month

October

November ...................................

December. ..................................

Calendar year 1940 ......................

January. ...................................

February

March.... ...................................

April........ ..............................

May. .......................................

June .......................................

July. ......................................

August .....................................

September. .................................

Water year 1940-41 ......................

Mar. Apr.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

73

108

118

123

125

131

Seoondfoot-days

14

330

0

19,020

0

0

0

678

4,856

4,475

4,494

4,011

3,331

81,589

Hay

134

131

131

139

140

136

134

131

' 127

129

127

143

131

136

129

131

131

134

138

138

131

129

129

134

134

134

138

162

167

167

162

Maximum

12

IDS

0

157

0

0

0

131

167

170

190

180

121

190

June

160

160

157

157

157

143

143

150

140

138

131

136

145

145

145

145

145

140

140

143

145

143

145

157

152

152

157

170

167

167

Minimum

0

0

0

0

0

0

0

0

127

131

2

106

100

0

July

170

143

12

3

2

37

162

167

164

IBS

185

190

190

100

190

190

190

180

167

162

162

162

157

157

147

143

143

143

138

136

127

Aug.

123

123

121

121

121

134

162

170

172

174

180

180

170

164

131

116

123

112

f!06

10S

110

110

110

110

110

108

110

110

110

106

106

Mean

0.5

11.0

0

58.0

0

0

0

22.6

137

149

145

129

111

59.2

Sept.

106

108

108

104

104

106

108

108

110

UO

118

110

110

114

181

118

118

118

118

118

118

181

181

118

US

US

UO

104

104

100

Run-off Ir 

ao re-feet

28

666

0

37,780

0

0

0

1,340

8 1 **U AAn 

8,880

8,910

7,960

6,610

42,820

f Conputed on basis of partly estimated gage-height record.
BIG WOOD RIVER BASIN 107

Thorn Creek spillway near Gooding, Idaho

Location.- Water-stage recorder, lat. 43°01', long. 114°37', in sec. 6, T. 5 S., R. 16 

£., 600 feet downstream from point of diversion from North Gooding canal, 900 feet 

upstream from Thorn Creek, and 7i miles northeast of Gooding.

Records available.- April 1928 to September 1940 (prior to 1937, Irrigation seasons only).

Extremes.- Maximum discharge during year, 246 second-feet Apr. 23 (gage height, 2.22 feet): 

no now for long periods.

1928-41: Maximum discharge, 447 second-feet Apr. 24, 1938 (gage height, 2.90 feet), 

from rating curve extended above 400 second-feet; usually no flow during nonlrrlgatlon 

seasons.

Remarks.- Records good. Spillway diverts from North Gooding canal and discharges Into 

Thorn Creek In sec. 6, T. 5 S., R. 16 E. It Is utilized as part of plan to minimize 

losses from natural channel of Big Wood River.

Cooperation.- Gage-height record and results of six discharge measurements furnished by 

watemaster for Big Wood and Little Wood Rivers.

Discharge, in second-feet, water year October 1940 tc September 1941

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

18

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

13

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

118

90

105

129

5

0

0

0

0

0

0

0

0

Dec. Jan.

Month

Feb.

October. ...................................

November. ..................................

December ...................................

Calendar year 1940 ......................

January

February. ..................................

March. .....................................

May

June .......................................

July. ......................................

August .....................................

September. .................................

Water year 1940-41 ......................

Mar. Apr.

0

0

0

0

0

0

0

0

5

60

65

67

63

67

57

52

49

51

56

54

44

94

146

129

172

172

187

200

17S

154

-

Seccadf cot-days

15

447

0

23,574

0

0

0

2,126

4^067

4,772

2*9BS tffVOO

21,568

May

150

156

150

148

160

160

168

168

ISO

144

140

138

151

115

109

98

95

95

184

137

148

155

184

116

113

120

137

144

158

154

152

Maximum

13

129

0

227

0

0

0

200

162

176

13S

135

200

June

164

158

158

146

140

137

158

176

174

178

168

160

155

116

106

106

180

133

131

188

115

105

97

109

115

120

133

135

148

150

Minimum

0

0

0

0

0

0

0

0

95

97

X27

71

42

0

July

158

156

148

138

137

127

127

13S

135

146

154

156

160

IBS

158

156

158

166

174

176

178

168

160

153

158

158

162

164

158

150

150

Aug.

133

127

120

120

103

95

90

75

74

71

79

92

101

92

80

89

89

97

89

83

88

97

97

97

95

95

97

95

92

92

92

Mean

0.5

14.9

0

64.4

0

0

0

70.9

136

136

154

94.9

99.6

59.1

Sept.

101

93

98

106

108

108

108

108

106

100

US

131

135

129

120

109

h!09

101

88

83

80

88

92

98

90

94

89

80

77

42

-

Run-cff in 

aore-feet

30

887

0

46,760

0

0

0

4,220

3,360

8,070

9,470

5,830

5,930

42,790

h Computed from ataff-gage reading. 

461677 O- 42 - 8
108 BIG WOOD RIVER BASIN

Little Wood River at Campbell Ranch, near Carey, Idaho

Location.- Water-stage recorder, lat. 43°28', long. 114°03', in SWjNWi sec. 35, T. 2 N.,

 R. tJO E., at Campbell Ranch, above flow line of Little Wood Reservoir, li miles downstream from High Five Creek, 2i miles downstream from Muldoon Creek, 11 miles east of 

Bellevue, and 12 miles (revised) northwest of Carey. Former gage at same site and at 

datum 0.024 foot lower.

Drainage area.- 267 square miles.

Records available.- February 1920 to September 1926 (published as Little Wood River near 

uarey), narch to September 1941.

Extremes.- Maximum discharge during period, 466 second-feet May 13 (gage height, 2.73 

feet); minimum, 39 second-feet Aug. 7 (gage height, 0.92 foot).

1920-26, 1941: Maximum discharge recorded, 1,030 second-feet June 12, 1921, and 

May 26, 1922; minimum, 14 second-feet Aug. 29, 30, 1926.

Remarks.- Records excellent. Flow affected by Campbell Reservoir (capacity, 2,700 acre-

 feet) on unnamed tributary. Diversions for Irrigation from Muldoon Creek, a tributary 

above station.

Cooperation.- Gage-height record furnished by Little Wood Irrigation District.

Rating table, Mar. 22 to Sept. 3O (gage height. In feet, and discharge, In aeoond-feet)

0.9 37

1.2 67

1.5 114

l.S 174

2.1 249

2.4 342

Discharge, In aecond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oot. Nov. Dec. Jan. Feb.

Month

Oot 

No\ 

Dec

C

Jar 

Fel 

Mai 

A pi 

Maj 

Jur 

Jul 

Aug 

Sei

1

alendar year

oh 22-31 

j^

he perle £

Mar.

106 

106 

111 

123

144 

170 

195 

210 

236 

230

Apr.

246 

349 

326 

273 

399

261 

227 

210 

204 

312

272 

241 

227 

230 

249

252 

227 

204 

136

176

172 

174 

131 

186 

192

207 

227 

244 

264 

294

Secondfoot-days

1,631 

7,217 

9,627 

6,792 

2,661 

2,115 

1,660

-

May

306 

309 

326 

322 

306

273 

261 

272 

'258 

358

294 

384 

441 

410 

349

294 

275 

322 

290 

255

261 

300 

342 

370 

360

366 

366 

306 

264 

241 

241

Maximum

236 

399 

441 

290 

146 

161 

62

-

June

222 

204 

212 

220 

214

217 

272 

290 

25S 

230

236 

261 

281 

290 

290

278 

261 

246 

264 

230

207 

214 

222 

202 

188

163 

159 

165 

152 

144

July

146 

144 

140 

13S 

132

123 

123 

112 

104 

95

91 

S6 

SI 

73 

78

73 

63 

65 

66 

77

67 

62 

60 

59 

57

55 

56 

61 

56 

55 

53

Minimum

106 

172 

241 

144 

55 

40 

51

-

Aug.

52 

50 

45 

44 

44

43 

41 

40 

42 

56

102

161 

123 

99 

87

SO 

81 

73 

70 

67

67 

SO 

75 

67 

66

65 

61 

60 

57 

57 

55

Mean

163 

241 

311 

226 

85.8 

68.2 

55.3

-

Sept.

53 

54 

57 

53 

51

51 

53 

54 

53 

52

51 

53 

55 

54 

54

53 

52 

51 

52 

57

59 

57 

63 

62 

60

59 

59 

60 

60 

59

Run-off in 

acre-feet

3,240 

14,310 

19,090 

13,470 

5,280 

4,200 

3,290

62,880
BIG WOOD RIVER BASIN

Little Wood River near Carey, Idaho

Location.- Water-stage recorder, lat. 43°23', long. 114°00', in Ei sec. 30, T. 1 N., R. 

21 u., a third of a mile upstream from West canal, 1-1/3 miles upstream from East canal, 

2 miles downstream from Little Fish Creek, 3 miles downstream from Little Wood Reservoir, and 6 nlles northwest of Carey.

Drainage area.- 312 square miles.

Records available.- April 1904 to May 1905, September 1926 to September 1941.

Average discharge.- 13 years (1926-27, 1929-41), 118 second-feet.

Extremes.- 1959-40: Maximum daily discharge during year, 600 second-feet Mar. 27; minimum discharge recorded, 10 second-feet Jan. 29 (gage height, 1.98 feet).

1940-41: Maximum discharge during year, 468 second-feet Apr.-2; maximum gage height, 

4.45 feet (ice effect) Jan. 18; minimum discharge, 4 second-feet Feb. 17 (gage height, 

1.63 feet).

1904-5, 1926-41: Maximum discharge, 6,000 second-feet (due to failure of reservoirs 

on Little Fish Creek) Apr. 20, 1938 Tgage height, 12.07 feet, datum then in use, from 

floodmark), from rating curve extended above 1,800 second-feet; minimum, that of Feb. 

17, 1941.

Remarks.- Records good except those for Nov. 4-7, Dec. 29-31, 1939, Jan. 12 to Feb. 1, 

Mar-. 13 to June 10, Nov. 21-25, and Dec. 9, 1940, to Jan. 31, 1941, which are fair. 

Regulation and diversions above station for irrigation. Storage in Little Wood Reservoir 3 miles above station began Feb. 12, 1941.

Cooperation.- Gage-height record during irrigation season furnished by water-master for 

Upper Little Wood River.

Rating tables, Oct. 1, 1939, to Sept. 30, 1941, except periods of Ice effect

(gage height, In feet, and discharge. In second-feet) 

Oct. ,^. ^^^ is^ 1940, to Sept. 30, 1941 1, 1939, to 

Jan. 11, 1940

2.2 15

2.4 28

2.6 48

l.S 

2.0 

2.3 

2.6

7.0

11

22

50

2.9 

3.2 

3.6 

4.0

91

148

243

363

4.4

4.6

505

580

Discharge, In second-feet, 1939-41 

1939-40

Dmy

1

2

S

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

30

21

22

23

24

25

26

27

28

29

SO

SI

Oct.

20

25

28

28

25

25

26

26

26

26

28

27

27

28

28

28

29

29

28

28

28

30

32

32

32

32

33

33

34

35

35

HOT.

35

36

36

a36

a36

a36

a36

36

36

35

34

34

35

35

35

34

34

32

32

34

33

34

35

35

36

36

36

36

36

36

-

Dec.

36

36

35

35

34

34

34

35

36

39

39

36

36

36

38

41

41

36

33

36

33

33

34

35

28

30

24

31

b33

b36

b39

Jan.

41

42

43

42

41

33

36

*38

42

40

32 "*

> b35

J

Feb.

*b40

42

40

38

40

42

40

38

41

43

38

32

35

46

44

34

44

43

35

32

39

48

48

44

46

48

58

70

73

_

-

Mar.

61

62

57

52

58

51

54

69

75

70

61

54

a55

a60

a60

a65

a70

a80

a85

a95

h!05

a!20

a!40

a!70

a250

a350

a600

a420

a330

a320

a520

Apr.

a560

a480

a430

a390

h3S3

a330

a300

a280

a270

a260

a250

h238

a330

a430

h512

a400

h350

a380

a450

a480

a450

a400

a380

h357

a350

a360

h377

a340

h312

a 290

-

n«y

a270

h277

a350

a390

a330

a300

a270

a280

a300

h363

a420

8530

a530

a480

h454

a430

h404

a380

h357

a350

h337

a335

h337

a350

h357

a350

h337

h319

h283

h2S3

a290

June

h300

a290

a280

h265

h265

h227

h212

a!90

a!80

a!80

191

205

225

225

212

198

184

170

166

157

146

133

118

106

103

98

91

85

80

79

-

July

76

84

79

78

72

69

69

66

66

65

65

63

60

58

5S

60

58

50

47

46

46

38

37

35

34

34

34

33

32

38

37

Aug.

31

30

29

27

24

23

23

22

21

20

20

20

19

18

20

24

24

24

23

22

22

20

18

17

17

18

18

IS

17

18

18

Sept.

17

17

20

24

30

28

26

33

39

43

37

34

39

41

38

36

34

34

41

44

46

' 4343

41

38

37

38

47

62

66

-

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records, and records for Big 

Wood River and Slough at Halley and Boise River near Twin Springs, 

b Stage-discharge relation affected by Ice. 

h Computed from staff-gage readings.
110 BIO WOOD RIVER BASIN

Discharge, In second-feet, of Little Wood River near Carey, Idaho, 1939-41 Continued

1940-41

Dee. Jan. Apr. July Aug. Sept.

a68 

a70 

a76

 72

 68

 66

 64

63

63

65

63

61

60

62

70

68

61

55 

b45

b40 

b60 

b50

54 

57 

57 

66 

f60

 55

 50 

a40 

a35 

a25

86

b40

40

66

(*)

b60 

b60 

b36 

b90 

14

11

blOO 

150 

112

61

57

48

10

e is

40 

b30

15

15

15

15

16

16

16

16

79

80

80

eo

84

65

73

73

76

62

91

108

116

150

263

260

238

322

439

360

377

350

265

303

316

344

337

306

254

240

207

249

263

220

142

140

150

172

172

157

135

133

150

212

246

249

254

277

280

271

268

263

233

179

193

238

251

271

363

411

387

312

280

274

274

134

309

300

294

294

297

300

309

309

309

306

268

260

233

195

177

215

233

254

297

303

286

233

227

238

268

286

257

235

249

240

166

207

217

207

179

159

157

157

152

142

116

127

135

135

131

121

110

118

163

195 

SOS 

207 

205 

207

203

200

198

191

175

163

150

142

127

121

138

133

118

106

112

108

106

101

78

57

57

58

66

68

72

73

59

184

182

166

168

138

127

110

105

103

103

100

101

114

106

106

98

78

63

61

62

63

62

63

62

61

56

62

44

58

* Winter discharge- aeasurenent made on this day.

a No gage-height record] discharge computed on basis of recorded range of stage, weather records, 

and_.reooras for nearby stations.

b 'stage-discharge relation affected by Ice.

f Fragmentary gage-height record; discharge computed from partly estimated gage height.

Monthly discharge, In second-feet, 1939-41

Secondfoot-days

Run-off In 

acre-feet

October ........

Hovember.............

December.............

Calendar year 1939

January ........

February.............

March................

April................

Itay..................

June.................

July.................

August...............

September............

Water year 1939-40

October 1940 ........

Hovember.............

December.............

Calendar year 1940

January 1941 ........

February.............

March................

April................

May..................

June.................

July.................

August...............

September............

Water year 1940-41

891

1,050

1,082

29,422

1,135

1,261

4,619

11,119

11,043

5,361

1,687

665

It 116

41,029

1,818

1,564

1,668

42,946

1,550 

1,029 

2,329 

7,448 

8.7B8 

6,866 

4,702 

1,910 

2,851

42,363

73

600

560

530

300

84

31

56

600

150

263

439

411

303

207

106

184

439

32

51

238

270

79

32

17

17

17

8

16

133

134

152

106

42

44

28.7

35.0

34.9

80.6

36.6

43.5

149

371

356

179

54.4

21.5

37.2

112

58.6

52.1

50.3

117

50.0

36.8

75.1

248

288

229

152

61.6

95.0

116

1,770

2,060

2,160

58,360

2,260

2,500

9 ,.160

28,1)60

21,900

10,680

3,360

1,320

2,210

81,370

3,010

3,100

3,090

86,170

3,070

2,040

4,680

14,770

17,310

13,680

9,380

3,790

6,660

84,000
BIG WOOD filVER BASIN 

Little Wood River near Richfield, Idaho

111

Location.- Water-stage recorder, lat. 43°03', long. 114°08', In sec. 30, T. 48., R. 20 

fc., naif a mile upstream from Jim Burn's Slough and heading of Dletrlch canal and 1 

mile east of railroad station at Richfield.

Records available.- January 1911 to September 1941 (Irrigation seasons only).

Extremes.- Maximum discharge recorded, 218 second-feet Apr. 5-7 (gage height, 2.05 feet); 

minimum recorded, 55 second-feet May 16 (gage height, 1.21 feet).

1911-41: Maximum discharge recorded, 868 second-feet May 3, 1938 (gage height, 

3.97 feet), from rating curve extended above 300 second-feet; minimum recorded, 7.6 

second-feet June 24, 25, 1920 (gage height, 0.52 foot).

Remarks.- Records good. Small ranch diversions above gage.

Cooperation.- Gage-height record and results of seven discharge measurements furnished by 

wa terms ter for Big Wood and Little Wood Rivers.

Discharge, in second-feet, water year October 1940 to September 1941

Day

I

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

97

97

97

97

97

9S

96

98

98

97

97

97

97

97

97

97

97

97

97

97

97

97

98

97

98

100

100

100

101

101

101

Nov.

101

103

al04

106

ioe

10S

110

110

110

110

bllO

bill

bill

bl!2

b!12

bl!3

113

113

115

115

117

117

bl!7

bl!7

bl!7

bl!7

bl!7

bl!7

117

117

~

Dec.

117

117

_

_

-

_

_

_

_

-

_

-

_

-

-

_

_

-

.

-

_

-

_

-

-

_

.

_

^

_

-

Jan. Feb.

Month

October. ...................................

Novsmber. ..................................

December . ..................................

Calendar year .....................

January. ...................................

Fsbruary. ..................................

March. . April................................ ......

MOJTar........................................ 

June .......................................

July .......................................

August .....................................

Sopteftber

later year ......................

Mar.

h!20

Apr.

f!22

134

154

190

216

218

216

flSS

176

190

f!95

200

195

173

160

152

160

171

165

140

134

131

133

133

131

127

124

120

122

125

-

Saoondfoot-daya

3,034

3,365

_

_

_

_

4,792

2,571

2,391

2,863

3,505

3,950

-

May

122

120

120

11£

120

120

112

97

90

90

93

8S

90

87

72

58

58

58

64

66

68

66

66

65

64

66

66

66

6S

66

SE

Maxima

101

117

t

_

91 CJ.OR 

1 99 JLciB

101

106

133

140

-

June

69

73

75

76

78

80

SI

81

87

86

84

SI

70

7S

76

76

74

74

75

78

80

80

78

78

70

78

75

86

97

101

-

MiniBum

97

101

_

_

_

120

58

69

S2

84 12*

-

July

105

106

106

105

105

105

103

103

hlOl

97

93

90

90

90

87

87

87

86

84

84

84

84

82

84

S6

86

87

37

87

90

92

Aug.

92

90

89

80

87

84

84

87

93

98

105

113

110

115

117

124

124

124

124

124

124

127

129

129

129

129

133

133

133

133

133

Mean

97.9

112

_

_

_

160

32. 9

79.7

113* 92*4

132

-

Sept.

133

131

134

134

133

131

129

129

127

127

127

129

129

125

125

185

125

127

129

129

131

134

140

140

140

140

140

140

134

133

-

Run-off in 

acre-feet

6,020

6,670

_

_

9,500

5,100

4,740

5,630

6,950

7,830

-

a Xo g«ge-h»ight record) discharge interpolated.

b Stage-discharge relation affected by Ice.

f Confuted on bacia of partly estimated gage-height record.

h Conputed from rtaff-gago reading.
112 BIG WOOD RIVER BASIN

Little Wood River at Shoshone, Idaho

Location.- Water-stage recorder, lat. 42°56', long. 114°24', in sec. 2, T. 6 S., R. 17 E. 

Just upstream from diversion dam for town water supply and 400 feet upstream from 

Shoshone-Richfield highway bridge in Shoshone.

Records available.- April 1922 to September 1941 (irrigation seasons only).

Extremes.- Maximum discharge recorded during year, 451 second-feet Aug. 13 (gage height, 

2.50 feet); minimum recorded, 53 second-feet Apr. 21, 22 (gage height, 0.84 foot).

1922-41: Maximum discharge recorded, 664 second-feet June IS, 1922; maximum gage 

height recorded, 3.85 feet July 4, 1938; practically no flow July 29, 1931, and Oct. 

3, 1938.

Remarks.- Records good. Many diversions above and below station for irrigation. Flow 

affected by operation of Milner-Gooding canal, which diverts from Snake River and 

crosses Little Wood River above station.

Cooperation.- Gage-height record and results of five discharge measurements furnished 

by watemaster for Big Wood and Little Wood Rivers.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct.

102 

80 

a 65 

a64 

64

64 

64 

64 

a 64 

a 64

a64 

a64

h64

Mov. Dec. Jan. Feb.

Month

Oct

No\ 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Ser

v\

ober 1-:

ember

alendar year

ater year 1940- 11

Mar. Apr.

h69 

h71 

h94 

a!25 

154

190 

194 

143 

86 

38

94 

99 

99 

91 

73

69 

66 

76 

76 

73

59 

141 

274 

336 

361

364 

394 

407 

3S7 

376

Secondfoot-daya

887

-

5,134 

11,331 

10,928 

11,763 

12,245 

8,998

-

May

366 

382 

374 

366 

370

373 

378 

376 

373 

376

373 

370 

364 

359 

357

355 

354 

359 

364 

366

363 

363 

359 

355 

352

357 

361 

363 

368 

364 

366

Maximum

102

-

407 

382 

427 

397 

436 

401

-

June

371 

366 

364 

363 

359

364 

399 

422 

427 

403

374 

363 

354 

345 

340

345 

355 

350 

343 

336

336 

333 

338 

340 

340

361 

374 

378 

390 

395

July

397 

395 

3S1 

387 

382

379 

379 

379 

378 

373

3S2 

391 

338 

384 

3S2

331 

3S2 

376 

371 

373

370 

368 

371 

373 

376

376 

373 

376 

376 

376 

378

Minimum

64

-

59 

352 

333 

368 

374 

157

-

Aug.

3S1 

381 

385 

387 

401

398 

406 

398 

397 

397

402 

424 

436 

418 

408

404 

404 

413 

410 

39S

384 

381 

381 

381 

384

385 

385 

382 

378 

374 

382

Mean

68.2

_

171 

366 

364 

379 

395 

300

-

Sept.

387 

384 

388 

388 

394

394 

395 

398 

401 

361

294 

300 

300 

297 

278

271 

274 

255 

238 

238

238 

242 

251 

259 

255

251 

242 

234 

234 

157

Run-off in 

acre-feet

1,760

_

10,130 

22, 470 

21,680 

23,330 

24,290 

17,350

-

a No gage-height record; discharge interpolated on basis of information furnished by water-master. 

h Computed froih staff-gage readings.
BIG WOOD RIVER BASIN 113

Silver Creek near Picabo, Idaho

Location.- Water-stage recorder, lat. 43°17', long. 114°01', in sec. 1, T. 2 S., R. 20 

E., l£ miles downstream from drain ditch of Blaine County Drainage District No. 1 and 

3 miles southeast of Picabo.

Records available.- May 1920 to September 1941 (1922-35, irrigation seasons only).

Extremes.- Maximum discharge during year, 181 second-feet Aug. 14; maximum gage height, 

3720~Teet Jan. 6, affected by ice; minimum discharge, 82 second-feet May 15-17 (gage 

height, 1.20 feet).

1920-41: Maximum discharge, 312 second-feet Apr. 3, 1923; maximum gage height, 

3.41 feet Apr. 15, 1936; minimum discharge, 26 second-feet June 2, 1920 (gage height, 

0.48 foot).

Remarks.- Records good. Many diversions above station for irrigation. Records of discharge do not include water bypassed at times around station by slough on right bank 

from which there is some diversion for irrigation.

Cooperation.- Gage-height record furnished by water-master for Big Wood and Little Wood 

Rivers.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

13 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

. a!32

h!33 

a!32

132 

132 

132 

132 

131

139 

128 

129 

129 

127

127 

127 

128 

129 

131

133 

135 

137 

136 

134 

134

Mov.

134 

135 

136 

136 

136

135 

137 

141 

147 

137

132 

131 

132 

130 

128

127 

127 

130 

131 

134

134 

134 

133 

131 

130

128 

128 

*128 

129 

130

Dec.

132 

132 

131 

132 

132

132 

131 

129 

127 

128

b!25 

b!20 

b!20 

bllO 

blOO

*b!05 

bllO 

bllO 

bllO 

b!20

121 

119 

121 

136 

123

130 

123 

124 

122 

124 

122

Jan.

110 

bllO 

bl!5 

bl!5 

bl!5

bl!5 

bl!5 

bl!5 

bl!5 

115

115 

115 

114 

117 

117

116 

123 

118 

*117 

117

116 

117 

117 

117 

117

120 

116 

116 

' 120 

116 

119

Feb.

121 

115 

114 

114 

114

114 

116 

115 

114 

115

116 

116 

115 

114 

114

114 

113 

114 

114 

114

114

116 

116 

119 

133

120 

120 

123

Month

Oct

Mov 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

VI

alendar year 194 0.. ....................

y......................................

ater year 1940-4

Mar.

131 

141 

14& 

142 

146

152 

154 

154

155 

157

157 

152 

147 

142 

139

138 

142 

157 

173 

178

176 

177 

171 

160 

151

144 

139 

133 

127 

127 

131

Apr.

129 

135 

148 

150 

142

142 

136 

127 1221 

135

136 

140 

131 

124 

122

131 

124 

130 

129 

125

124 

120 

118 

118 

120

119 

116 

115 

109 

107

Secondfoot-days

4,073 

3,981 

3.781

44,438

3,600 

3,247 

4,635 

3,804 

3,078 

3,646 

4,296 

4,793 

4,803

47,742

May

106 

101 

96 

99 

98

97 

101 

110 

113 

114

111 

109 

114 

102 

88

84 

84 

90 

94 

95

96 

96 

94 

94 

96

97 

99 

99 

98 

99 

104

Maximum

137 

147 

132

187

123 

123 

178 

150 

114 

163 

161 

179 

171

179

June

107 

107 

107 

109

111

104 

110 

124 

139 

127

121 

117 

116 

117 

119

116 

114 

116 

124 

127

127 

128 

128 

125 

124

123 

124 

133 

149 

163

July

161 

156 

153 

151 

141

141 

148 

146 

143 

138

134 

132 

134 

135 

133

130 

132 

133 

134 

134

134 

134 

132 

129 

128

130 

133 

136 

142 

145 

144

Minimum

127 

127 

100

66

110 

113 

127 

107 

84 

104 

128 

131 

154

84

Aug.

141 

138 

136 

133 

132

132 

132 

131 

132 

132

138 

151 

170 

179 

174

165 

161 

162 

155 

157

167 

168 

168 

16S 

168

169 

168 

168 

167 

166 

165

Mean

131 

133 

122

131

116 

116 

150 

127 

99.3 

122 

139 

155 

160

131

Sept.

162 

162 

162

161 

161

161 

160 

159 

160 

159

15S 

159 

159 

159 

159

158 

157 

157 

157 

157

159 

162 

166 

167 

171

168 

164 

156 

154 

154

Run-off in 

acre-feet

8,080 

7,900 

7,500

88, 140

7,140 

6,440 

9,190 

7,550 

6,110 

7,230 

6,520 

9,510 

9,540

94,710

*- Winter discharge measurement made on this day.

a No gage-height record; discharge Interpolated.

b Stage-discharge relation affected by Ice.

h Computed from staff-gage reading.

Hote.- The flow In bypass channel, which carries water around gage, was measured as 12.0 secondfeet Oct. 9, 18.8 second-feet July 3, 6.03 second-feet Aug. 7, 25.1 second-feet Sept. 12, or estimated as 3 second-feet MOT. 28, ID second-feet Dec. 16, 12 second-feet Jan. 19, 25 second-feet Mar. 

6, 32 second-feet Apr. 7, 0.05 second-foot May 25.
114 BIO WOOD RIVER BASIN 

King Hill canal near Hagerman, Idaho

Location.- Staff gage, lat. 42°52', long. 114°55', in SWi sec. 27, T. 63., R. IZ E., 

430 reet upstream from mouth of inverted syphon crossing Snake River, 1,000 feet downstream from heading at Idaho Power Co.'s canal, half a mile west of highway bridge over 

Big Wood River, and 3i miles north or Hagerman.

Records available.- March 1930 to September 1941 (irrigation seasons only except for 1939).

Extremes.- Maximum discharge observed during year, 312 second-feet May 21, 26, 29 (gage 

height, 3.56 feet); no flow for periods during winter and Mar. 28, July 7, SO, 31, Aug. 

25, when gates were closed.

1930-41: Maximum discharge observed, 327 second-feet May 28, 29, 1940; maximum gage 

height, 3.64 feet July 3, 4, 1931, Aug. 13 to Sept. 4, 1935, Aug. 11-14, Aug. 16 to 

Sept. 1, 1936; practically no flow for long periods each year.

Remarks.- Records good. Gage read twice daily. This canal, which is operated by King 

Hiii irrigation District to provide water for irrigation of Its project, diverts from 

Idaho Power Co.'s canal, which in turn diverts from Big Wood River [Malad Springs 

water).

Cooperation.- Qage readings furnished by King Hill Irrigation Dietrlct.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

82 

S3 

84 

25

26 

27 

28 

28

30 

31

Oct.

196 

196 

196 

196 

189

1S5 

185 

185 

185 

1S5

165 

165 

3 

a3 

a3

a3 

a3 

a3 

a4 

a4

a 

a 

a

a

a4 

a.4 

a4 

a3 

aS 

a3

HOT.

3 

7

Dec.

e3

Jan. Feb.

t2

Xonth

Oet 

No^

Dec

C

Jar 

Fel 

Hai 

Api

Ha, 

Jur 

Jul 

Auj 

Sej

«

ember. . . 

alendar year

ch 7-31 

H

ater year

Mar.

0 

0 

69 

74

93 

93 

93 

92 

91

91 

91 

91 

91 

91

91 

46 

5 

5 

5

5 

30 

57 

106 

122 

127

Apr.

145 

165 

16S 

172 

175

204 

203 

21S 

236 

236

233 

235 

236 

255 

255

255 

255 

254 

252 

254

263 

26S 

275 

284. 

296

296 

293 

295 

295 

293

Seoondfoot-days

2,315

-

1,661 

7,264 

9,416 

8,636 

8,625 

6,888 

7,731

-

May

295 

285 

28S

298 

300

298 

29S 

2SS

298

298

286 

296

303 

305 

306

SOS 

308 

308 

SOS 

308

310 

310 

308 

310 

308

312 

312 

310 

318 

301 

301

Maximum

196

-

127 

296 

312 

303 

300 

286 

283

-

June

303 

300 

296 

288 

284

2S4 

288

2se

2S4

286

279 

279 

288 

286 

27S

288 

288 

286 

288 

2S6

286 

2S8 

288 

2S6 

290

291 

280 

. 290 

290 

280

July

288 

288 

281 

281 

291

286 

116 

284 

295 

295

285 

295 

295 

288

300

SCO 

285 

296 

286 

295

285 

286 

286 

296

29S

298 

295 

291 

289

206 

73

Minimum

3

-

0 

145 

295 

278

73 

184 

233

-

Aug.

296 

293 

290 

281 

283

295 

286 

285 

295 

295

293 

293 

293 

295 

281

288 

290 

281 

280 

886

288 

290 

288 

288 

184

284 

284 

284 

284 

284 

281

Mean

74.7

-

66.4 

242 

304 

288 

278 

287 

268

-

Sept.

883 

289 

289 

279

278

279 

278 

273 

268 

£86

867 

866 

268 

868

860

257 

861 

840 

247 

844

244 

243 

841 

241' 243

239 

238 

235 

233 

238

Run- off In 

acre-feet

4,590

-

3,280 

14,410 

18,680 

17,130 

17,110 

17,630 

15,390

-

t Result of discharge measurement.

a No gaga-height reocrd; discharge Interpolated.

e Field estimate.
TRIBUTARIES AND DIVERSIONS BETWEEN BIS WOOD RIVER AND OWYHEE RIVER 115

Clover Creek near Bliss, Idaho

Location.- Staff gage, lat. 42°59', long. 115°01', in SWt sec. 15, T. 53., R. 12 E., 

just upstream from flow line of Saunders Reservoir, 3t miles upstream from Hog Creek, 

and 5 miles northwest of Bliss.

Records available.- April 1938 to September 1941.

Extremes.- Maximum discharge during year, 194 second-feet Feb. 12 (gage height, 3.25 

reel from floodmarks); minimum discharge observed, 0.1 second-foot July 3-6, 9-11; 

minimum gage height observed, 0.83 foot July 10.

1938-41: Maximum discharge observed, 1,320 second-feet Feb. 28, 1940 (gage height, 

6.20 feet); no flow for many days during summers of 1938-40.

Remarks.- Records good except those for periods of ice effect, no gage-height record, or 

 backwater from Saunders Reservoir, which are poor. Many diversions both above and below station for irrigation. Oage read twice daily.

Discharge, In aeeond-feet, water year October 1940 to September 1941

Day

1 

2

3 

4 

6

S 

7 

S 

9 

10

11 

18 

15 

14 

16

16 

17 

18 

19 

80

81 

88 

88 

84 

26

86 

87 

86 

86 

SO 

81

Oet.

2.4 

2.4 

5.2

2.6 

2.0

2.0 

2.2 

2.2 

2.2 

2.2

2.4 

8.4 

2.4 

B.S 

8.8

8.8

2.8 

2,9 

8.0 

2.9

8.7 

2.7 

2.4 

2.7 

2.9

8.8 

8.8 

3.0 

S.S

S.4

S.7

NOT.

8.4 

8.2 

8.3 

8.3 

3.2

8.2

8.6 

8.6 

8.6 

3.6

4.8 

4.1 

8.7 

b3.6 

bS.5

b4.8

1:1 e.i

4.8

I a4.0 

"^ 4.6

e.o e.i

6.1

Dee.

6.1 

6.1

*6.1 

6.1

6.1

e-x

6.1 

6.1 

1)4.8 

b4.B

},

^ **'*

a7.0

Jan.

> 

 86.0

'e18

9.0 

8.4 

8.4

7.6

7.6

S.O

s.o

7.8 

9.0 

9.8

46 

36 

26 

20

17

14

Month

Oet 

Ho\ 

Dec

C

Jar 

Fel

Kai 

Api

Jui 

Ju3 AU«

Set

i

Feb.

18 

18 

11 

18 

14

87 

160 

94 

64

75

169 

186 

76 

8ft

38

86 

89 

86 

80 

40

27 

41 

72 

140 

106

78 

61 

60

alandar year 1940..... .................

y......................................

rater year 1940-4

liar.

138 

120 

100 

70 

74

67 

63 

80 

88 

69

60 

46 

89 

86 

88

31 

72 

48 

34

38

41 

40 

86 

26 

84

21 

20 

17 

20 

80 

17

Apr.

22 

17 

22

> eSO

ell 

c9. 

08 

08

e7 

87 

ee 

«6

ee.e

«6. 6 

06.6 

06 

06

04.6

04 

04 

08. 6

08.6 

«3

Secondfoot -days

81.2 

180.6 

178.6

9,746.9

539. 4 

1.684 

1,634 

532.0 

124.9 

98.8 

19.6 

41.1 

66.8

4,697.9

May

8

e2.6 

02.5 

OS. 4

64.0 

08.6 

66.0 

6.S 

6.6

6.6 

6.6 

6.6 

6.2 

6.8

6.8 

6.0 

6.0 

5,8 

3.4

1.8 

1.1 

1.1 

1.6 

2.4

2.7 

4.2 

8.0 

2.S 

5.0 

4.6

HUT! 111 ii in

3.7

1,200

46

186

133

6.S 

6.6 

2.9 

3.0 

2.6

18E

June

6.6 

6.0 

4.4 

4.4

4.6 

4.8 

6.1

6.1 

4.S

4.8 

6.0 

4.6 

4.6 

4.6

4.1 

3.4 

2.6 

2.2 

1.8

1.7 

.S 

.2 

.8

.7

.4

.3 

.9 

.8

.7

Minimum

July

0.3 

.3 

.2

.1

.1 

1.2 

.2 

.1 

.1

.1 

.6 

.7 

.6 

.3

.1 

.8 

.6 

2.9 

2.6

1.1 

.8 

.7 

.7 

.6

.7 

.6 

.6 

.7 

.7 

1.5

2.0

0

11 

17 

5 

1.1 

.2 

.1 

.5 

1.2

.1

Aug.

8.1 

1.9

1.7 

1.6

1.6 

1.4 

1.4

1.6 

1,5

2.3 

3.0 

2.8 

2.7 

2.1

1.8 

.7 

.6 

.3 

.6

.3

.6

.7 

.7 

.8

.9 

.8 

.8

1.0 

1.1 

1.2

Mean

2.64 

4.02 

5.60

26.6

10.9 

60.1 

49.6 

11.1 

4.03 

3.08 

.65 

1.53 

1.84

12.6

Sept.

1.8

1.8 

1.8 

1.8

1.4

1.6 

1.4 

1.1 

1.8

1.4 

1.7 

1.8 

1.9 

1.9

1.9 

1.8 

1.9 

2.1 

8.1

8.8 

8.8 

8.6 

8.3

8.6

2.4

8.6 

2.8 

2.4 

2.4

Run-off tn 

 ore-feet

161 

859 

844

19,840

673 

3,340 

3,040 

669 

248 

188 

39 

82 

110

9,120

* Winter discharge measurement Bade on thla day.

a Ho gage-height record; discharge computed on basis of weather records, 

b Stage-discharge relation affected by tee.

e Baetarater fro« reaerrolrj discharge oosputed on testa of three discharge meaaurenenta and 

weather reeerda.
116 TRIBUTARIES BETWEEN BIG WOOD RIVER AND OWYHEE RIVER 

King Hill Creek near King Hill, Idaho

Location.- Staff gage, lat. 43°01', long. 115°14', In SWi sec. 2, T. 5 S., R. 10 E., 

at road bridge on Worth Montgomery Ranch, 1& miles upstream from mouth and If miles 

northwest of King Hill.

Drainage area.- 83.6 square miles.

Records available.- April 1938 to June 1941 (discontinued). February to May 1913 at site 

It miles upstream.

Extremes.- Maximum discharge observed during year, 214 second-feet Feb. 7 (gage height, 

3.08 feet); no flow Oct. 12, 13, 15.

1913, 1938-41: Maximum discharge observed, 763 second-feet Mar. 31, 1940 (gage 

height about 7.2 feet), from rating curve extended above 350 second-feet; no flow 

Oct. 12, 13, 15, 1940.

Remarks.- Records poor. Several diversions above station for Irrigation, 

twice dally.

Gage read

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

8 

3

4 

5

6 

7 

8 

9 

10

11 

18 

13 

14 

15

16 

17 

18 

19 

80

81 

88 

83 

84 

85

86 

87 

28 

89 

30 

31

Oct.

0.5 

.5 

.4 

.4 

.6

.9 

.6 

.4 

.4 

.3

.3 

.1 

0 

.1 

.1

.4 

1.0 

1.8 

1.3 

1.3

1.5 

1.3 

1.4 

1.3 

1.5

1.8 

c8.5

Nov.

 ol.B

Dec.

1.1 

1.1 

1.1 

1.1 

1.8

1.2 

1.3 

1.2 

1.4 

1.2

bl.l 

bl.l 

bl.l 

bl.l 

bl.l

bl.l 

1.7 

2.3 

2.3

> c3.5

.>

Jan.

1.2 

1.8 

1.8 

2.4 

3.0

2.3 

3.5 

3.7 

3.4 

3.1

2*8 

2.8 

2.8 

3.6 

6.8

6.8 

6.8 

6.0 

5.0 

5.1

5.0 

5.1 

5.6 

5.4 

5.6

5.6 

12 

5.6 

4.5 

4.5 

4.6

Feb.

4.8 

6.8 

8.0 

7.1 

6.8

7.3 

137 

38 

18 

81

51 

58 

80 

16 

16

14 

13 

12 

15 

80

23 

31 

41 

62 

36

26 

£1 

85

Month

Oct 

No\ 

Dec

C

Jar 

Fet 

Max 

Api 

Maj 

Jur 

Jtd 

Aug 

Se]

1

alendar year 1940.. ....................

lie perio(

Mar.

48 

38 

31 

30 

28

89 

89 

30 

33 

29

26 

84 

84 

22 

81

84 

84 

84 

84 

23

81 

81 

81 

80 

19

18 

18 

23 

89 

40 

38

Apr.

34 

45 

45 

51 

51

38 

38 

48 

45 

40

42 

59 

45 

42 

38

38 

88 

26 

85 

84

24 

21 

20 

IS 

18

17 

17 

17 

16 

15

Secondfoot-days

38.1 

54.0 

66.8

7,208.7

135.2 

747.6 

823 

979 

161.4 

59.5

-

May

14 

8.0 

8.4 

8.6 

8.0

7.3 

7.1 

7.5 

7.7 

7.3

4.6 

4.5 

4.3 

4.3 

4.8

4.3 

4.5 

4.2 

4.3 

4.0

4.0 

4.2 

4.2 

3.1 

2.0

£.5 

3.1 

3.0 

S.I 

8.7 

2.8

Maximum

"_

358

12 

137 

48 

59 

14 

2.8

-

June

2.6 

2.6 

8.6 

8.4 

8.4

8.6 

, 2.8 

8.6 

2.4 

8.4

2-*

8.4 

2.8 

S.S 

8.8

8.8 

> dl.5

>

July

Minimum

0 

1.1

0

1.8 

4.S 

18 

15 

8.0

-

Aug.

Mean

1.04 

1.80 

2.15

19.7

4.36 

26.7 

26.5 

38.6 

5.81 

1.98

-

Sept.

Run-off In 

acre-feet

64 

107 

138

14,300

868 

1,480 

1,630 

1,940 

380 

118

6,060

b Stage-discharge relation affected by ice.

c Backwater from beaver damsj discharge computed on basis of weather records and records for 

Clover Creek near Bliss*

d Doubtful gage-height record; discharge computed on basis of weather records and one discharge 

measurement.
TRIBUTARIES BETWEEN BIO WOOD RIVER AND OWYHEE RIVER 

Little Canyon Creek near Glenns Ferry, Idaho

117

Location.- Staff gage, lat. 42°59', long. 115°19', sec. 18, T. 53., R. 10 E., at bridge 

on county road, 2 miles north of Glenns Ferry.'

Records available.- December 1938 to September 1941 (October 1940 to September 1941, 

 fragmentary). November 1909 to June 1913 (fragmentary) at site downstream in sec. 30, 

at Glenns Ferry.

Extremes.- Maximum discharge observed during year, 68 second-feet Feb. 7 (gage height, 

3.56 reet); no flow probably occurred at times.

1939-41: Maximum discharge observed, 150 second-feet Feb. 28, 1940 (gage height, 

4.36 feet); no flow at times during summers.

Remarks.- Records fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

to.i

Nov. Dec.

to. 9 

t.3

Jan.

> dl.3

;

2.2 

3.4

2.9 

1.7 

1.5 

l.S 

1.5

1.7 

1.9 

2.2 

2.0 

2.3

2.6 

2.9 

2.9 

2.S 

2.5 

2.2

Feb.

2.0 

2.0 

2.2 

2.2 

2.3

6.7 

68 

22 

12 

14

12 

26 

16 

9.2

11

 \

 dlO

J

Month ,

dot 

Son 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jun 

Jul 

Aug 

Set

11

alendar year

tember . ................................

ater year

Mar.

t8.7 

t2?3

Apr.

t4.5

Secondfoot-days

57.9 

337.6

-

May

tio

t!4 

t9.7 

tl-5

Maximum

3.4 

68

-

June

t2.4 

t2.2

July

to. 3

Minimum

2.0

-

Aug.

l.S 

t.3

Mean

1.S7 

12.1

-

Sept.

0.2

Run-off In 

acre-feet

115 

670

-

t Result of discharge measurement.

d Doubtful gage-height record; discharge computed on basis of discharge measurement on Feb. 25, 

weather records, and records for nearby stations.
lie TRIBUTARIES AND DIVERSIONS BETWEEN BIO WOOD RIVER AND OWYffiE RIVER

Bennett Creek near Bennett, Idaho

Location.- Water-stage recorder, lat. 43°13'30PI , long. 115°31'30", In sec. 28, T. 2 8., 

 R. 8 ki., 100 yards downstream from East Fork of Bennett Creek and 7i miles southwest 

of Bennett post office (Dixie store).

Drainage area.- 21.3 square miles.

Records available.- May 1938 to September 1941.

Extremes.- Maximum discharge during year, 24 second-feet Mar. 1 (gage height, 2.83 feet); 

practically no flow July 22-27.

1938-41: Maximum discharge, 95 second-feet Mar. 24, 1939 (gage height, 4.71 feet, 

present datum), from rating curve extended above 60 second-feet; practically no flow 

Sept. 16-25, Oct. 14-18, 1939, July 22-27, 1941.

Remarks.- Records fair except those for Dec. 12 to Jan. 8, which are poor. No regulation 

or diversion above station; many diversions for Irrigation below.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

18 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

0.1 

.2 

.2 

.2

.1

.1 

.1

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1

.1 

.1 

.2

.2 

.2 

.3

.2 

.2

.2 

.2 

.3 

.3 

.3 

.3

NOT.

0.2 

.2 

.2 

.2 

.2

.2 

.3 

.4 

.5 

.5

.5 

.4 

.4 

.4 

.4

.3 

.4 

.4

.4

.4

.4 

.4 

.4 

.3 

.3

.3 

.3 

.3 

.3 

.4

Dec.

0.4 

.4 

.4 

.4 

.4

.4 

.4

.5 

.5 

.4

y b.3

. 3 

.4

.4

.5 

.7 

2.2 

l.S

1.5 

2.0 

2.1 

2.0 

2.1 

1.8

Jan.

!

Month

Dot 

HOT

Deo

0

Jan

Peb 

Mar 

Apr

««y

jtm 

Jul 

Aug 

Sep

W

alendar Tear 1940. ........

uary

eh. .......................

t ember....................

ater rear 1840-41. ... . , ..

bl.O

1.2 

1.2

1.2 

1.2 

1.2 

1.9 

1.8

1.6 

1.6

1.5 

1.5 

1.6

1.6 

1.6 

1.6 

1.6 

l.S

3.0 

2.8 

2.5 

2.3 

2.2 

2.2

Feb.

2.1 

2.0 

2.0 

1.9 

2.0

2.S 

6.2

4.1 

3.7 

4.2

S.I 

S.8 

5.9 

5.3 

4.9

4.5 

4.4

4.2 

4.2 

4.5

5.3 

7.1 

7.7 

9.8 

8.8

7.4 

7.3 

10

Seoondfoot-days

5.1 

10.3 

24.6

2,136.3

48.7 

149.3 

216.2 

196.6 

177.6 

77.0 

13.6 

3.1 

6.7

926.7

Mar.

19.0 

14.0 

11.0 

9.5 

9.0

8.6

7.9 

7.6 

7.4 

7.3

7.1 

6.6 

6.3 

5.7 

5.7

5.6

5.7

5.9 

5.7 

5.9

5.5 

5.3 

5.2 

.9 

.3

.4

.4 

.5 

4.8 

4.9 

5.0

MaxlaniB

0.3 

.6 

2.2

56

5.0 

10 

18 

8.0 

7.4 

4.8 

1.6 

.1 

.4

18

Apr.

5.2 

5.5 

5.7 

5.6 

6.6

6.5 

6.3 

6.3

6.3 

S.I

9.0 

9.0 

S.8 

3.3

8.1

7.7 

7.4

7.1 

6.S 

6.5

6.2 

5.9 

5.6 

5.3 

5.3

5.6 

5.2 

5.2 

5.3 

5.3

May

5.6 

5.9 

7.3 

7.1 

7.3

7.3 

6.9 

7.4 

7.1 

6.8

6.S 

6.8 

6.8 

6.9 

6.6

6.2 

6.0

5.7 

5.6 

5.3

5.3 

5.0 

4.6 

4.4

4.1

4.2 

4.2 

3.9 

3.6 

3.4 

3.5

Minimal

0.1 

.2

.1

1.8 

4,4 

6.2

3.4 

1.6 

0 

.1 

.1

0

June

3.5 

3.1 

3.1 

3.1 

2.9

3.0 

4.6 

4.8 

4.0 

3.5

3.0 

2.9 

2.6 

2.3 

2.2

2.2

2.1

2.2 

2.2 

2.1

1.9 

1.9 

l.S 

1.8 

1.9

1.7 

1.6 

1.7 

1.7 

1.5

Mean

0.16 

.34

.78

5.84

1.57 

6.33 

6.94 

6.62 

5.73 

2.67 

.44 

.10 

.22

2.54

July

1.5 

1.3 

1.2 

 1.2 

1.2

1.0 

.9 

.S 

.8 .'6

.5 

.5 

.3 

.3 

.3

.3 

.1

.1 

.1 

.1

.1 

0 

0 

0 

0

0 

0 

.1 

.1 

.1 

.1

Per 

square 

 lie

0.0075 

.016 

.037

.274

.074 

.260 

.326 

.306 

.268 

.121 

.021 

.0047 

.0010

.118

Aug.

0.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1

.1 

.1 

.1

.1 

.1 

.1

.1 

.1

.1 

.1 

.1 

.1

.1 

.1

Ru

Inches

0.008 

.02 

.04

3.728

.09 

.26 

.38 

.34 

.31 

.14 

.02 

.006 

.001

1.616

Sept.

0.1 

.1 

.1

.a 

.a

.a

.2

.a

.2 

.2

.2

.2

.a 

.s

.2

.3 

.3 

.3 

.3 

.3

.4

.4 

.8

.2 

.8

.2 

.2 

.2 

.2 

.3

n-o«

Acre-feet

10 

80 

48

4,240

97 

296 

427 

388 

362 

163 

27 

6.1 

13

1,640

t> Stage-discharge relation affected by lc«.
TRIBUTARIES AND DIVERSIONS BETWEEN BIG WOOD RIVER AND OWYHEE RIVER 119

Mountain Home feeder canal near Mountain Home, Idaho

Ion*- Water-stage recorder and concrete control, lat. 43°13', long. 115°42', In sec. 

, T. 2 S., R. 6 E., 30 feet downstream from point of diversion from Canyon Creek and 

5 miles north of Mountain Home.

Records available.- April 1924 to September 1929, April 1931 to September 1941.

Extremes.- Maximum discharge during year, 95 second-feet May 14 (gage height, 1.37 feet); 

practically no flow Oct. 13 to Nov. 4.

1924-29, 1931-41: Maximum discharge, 226 second-feet Feb. 21, 1927 (gage height, 

2.18 feet, datum then in use), from rating curve extended above 120 second-feet; no 

flow for long periods in each year.

 ks.- Records good. Canal diverts from Canyon Creek in sec. 36, T. 2 S., R. 6 E., and 

.Olivers water to Mountain Home cooperative canal, which heads in Mountain Home feeder 

canal half a mile below station, for irrigation of about 5,000 acres In Mountain Home 

Irrigation district. At times when there is a surplus of water for Irrigation, canal 

feeds directly Into Mountain Home Reservoir. No diversion from canal above station; 

three small diversions between station and headgates of Mountain Home cooperative canal. 

Flow regulated by headgates on Canyon Creek and by Long Tom and Little Camas Reservoirs.

Cooperation.- Gage-height record furnished by Mountain Home Irrigation District.

Discharge, In leoond-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

6

6 

7 

S 

9 

10

11 

18 

13 

14 

16

16 

17 

18 

19 

20

81 

28 

23 

84 

25

26 

27 

88 

29 

50 

31

Oet.

3 

4 

4 

4 

3

3 

3 

3 

3 

3

3 

3 

0 

0 

0

0 

0 

0 

0 

0

0

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Hov.

0 

0 

0 

0

1

1 1 1

1

h2

Dec.

h3

Jan.

4 

5

5

a 

a 

a 

a5

Feb.

a7 

8 

7 

7 

7

7 

17 

15 

15 

16

24 

28 

25 

23 

22

20 

a!7 

a!6 

a!6 

17

19 

20 

23 

32 

35

28 

26 

25

Month

Oet 

Hoi

Dec

C

Jan 

Pet 

Mar 

Api 

Ma, 

JUK 

Jul 

Aug 

Sei

1

ember 1-9 ..............................

alendar 

uary 13-31. ............................

11. ....................................

ater yee

Mar.

31 

33 

31 

29 

26

26 

24 

20 

24 

24

23 

22 

20 

19 

18

17 

17 

18 

17 

17

16 

16 

15 

14 

14

14 

13 

13 

14 

14 

13

Apr.

13 

14 

14 

14 

16

14 

13 

12 

15 

21

28 

34 

34 

33

31

30 

29 

28 

27 

25

a23

aS2 

20 

20 

19

18 

18 

18 

17 

40

Seeondfoot-days

3S 

5

-

97 

520 

612 

660 

2,045 

1,444 

1,673 

593 

30

-

Hay

51 

53 

58 

57 

38

37 

45 

55 

54 

54

73 

78 

89 

92 °2

88 

S3 

84 

83 

82

81 

81 

80 

79 

80

84 

69 

38 

31 

37 

39

Maximum

4

1

-

7 

33 

33 

40 

92 

69 

75 

60

-

June

44 

45 

45 

45 

45

45 

52 

58 

57 

55

53 

52 

50 

49 

48

33 

29 

29 

32 

26

24 

30 

43

52 

63

66 

67 

69 

69 

69

July

6S 

6S 

67 

66 

65

49 

46 

59 

32 

59

73 

75 

69 

51 

50

48 

58 

46 

43 

43

48 

54 

58 

59 

54

52 

51 

48 

40 

34 

30

Minimum

0 

0

-

4 

7 

13 

12 

31 

24 

30 

1

-

Aug.

38 

40 

43 

43 

54

56 

56 

60 

58 

29

15 

8 

23 

24 

11

4 

3 

3 

3 

3

4 

3

3 

2

1

1 

1 

1

1 

1 

1

Mean

1.3 

.5

-

5.1 

18.6 

19.7 

22.0 

66.0 

48.1 

54.0 

19.1 

1.0

-

Sept.

1 

1 

1 

1 

1

1 

s !

al 

/

Run-off In 

acre-feet

77 

9.9

-

192 

1,030 

1,210 

1,310 

4,060 

2,860 

3,320 

1,180 

60

-

a Ho gage-height record; discharge computed on bails of recorded range of stage, weather records, 

and records for nearby stations.

h Computed from staff-gage readings.
120 TRIBUTARIES AND DIVERSIONS BETWEEN BIG WOOD RIVER AND OWYHEE RIVER

Mountain Home cooperative canal near Mountain Hone, Idaho

Location.- Water-stage recorder and concrete control, lat. 43°12', long. 115°42', in sec. 

36, T. 23., R. 6 E., at Lairiberton weir, 300 feet downstream from point of diversion 

from Mountain Hone feeder canal and 4i miles north of Mountain Home.

Records available.- April 1924 to September 1929, April 1931 to September 1941.

Extremes.- Maximnm discharge during year, 89 second-feet May 15 (gage height, 1.45 feet); 

no flow for long periods during year.

1924-29, 1931-41: Maximum discharge, 109 second-feet July 16, 1925 (gage height, 

1.69 feet, datum then in use); no flow during nonirrigation seasons except occasional 

stock-water runs.

Remarks.- Records good during irrigation season; others poor. No diversions between station and head of canal. Flow regulated by gates at head of canal and by Long Ton and 

Little Camas Reservoirs. Canal diverts from Mountain Home feeder canal. Water is used 

for irrigation of about 5,000 acres in Mountain Home irrigation district.

Cooperation.- Gage-height record furnished by Mountain Home Irrigation District.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct. Nov.

 V

' 0

1:

Dec. Jan. Feb.

Month

Oct 

Not 

Dec

C

Jar 

Pet 

Mai

Api 

Maj 

Jur 

Jul 

Aug 

Sej

V

alendar year 194 0... ...................

ater year 1940-4

Mar. Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

al 

al 

al 

al 

al

al

al

1 

1 

30

Secondfoot-days

0

10 

0

7,512

0 

0 

0 

39 

1,895 

1,068 

1,636 

527 

0

5,175

May

46

47 

37 

31 

30

31 

39 

49 

49 

48

65 

68 

81 

86 

87

86 

83 

84 

83 

81

79 

80 

79 

79 

79

84 

67 

36 

28 

36 

37

Maximum

0 

0

87

0 

0 

0 

30 

87 

66 

73 

60 

0

87

June

42 

43 

43 

43 

44

44 

18 

10 

10 

9

9 

12 

20 

25 

25

24 

27 

28 

32 

26

23 

29 

43 

52 

61

64 

65 

65 

66 

66

July

65 

65 

65 

64 

63

47 

43 

56 

31 

56

72 

73 

69 

61 

50

47 

58 

47 

42 

43

47 

53 

56 

58 

53

51 

50 

47 

40 

33 

29

Minimum

0 

0

0

0 

0 

0 

0 

28 

9 

29 

0 

0

0

Aug.

37 

40 

43 

43 

47

54 

55 

60 

57 

28

12 

5 

19 

21 

6

0 

0 

0 

0 

0

0 

P 

0 

0

n

0 

0 

0 

0 

0 

0

Mean

0 

.3

0

20.5

0 

0 

0 

1.3 

61.1 

35.6 

52.8 

17.0 

0

14.2

Sept.

Run-off in 

acre-feet

0 

20 

0

14,910

0 

0 

0 

77 

3,760 

2,120 

3,240 

1,050 

0

10,270

a No gage-height record; discharge Interpolated.

e Discharge computed on basis of discharge measurement, November 29, and Information furnished 

by water-master.
TRIBUTARIES AND DIVERSIONS BETWEEN BIG WOOD RIVER AND OWYHEE RIVER 121

Wlckaftoney Creek near Bruneau, Idaho

Location.- Water-stage recorder, lat. 42°47', long. 115°59', In sec. 27, T. 7 S., R. 4 

 E., 0.3 mile upstream from mouth and 11 miles southwest of Bruneau.

Records available.- December 1938 to September 1941.

Extremes.- Maximum discharge during year, 62 second-feet Mar. 3 (gage height, 2.13 feet); 

no flow during most of year.

1939-41: Maximum discharge recorded, 500 second-feet Mar. 20, 1939 (gage-height, 

4.30 feet); no flow during long periods of each year.

Remarks.- Records good. No regulation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. NOT. Dec. Jan. Feb.

0 

0 

0 

O 

O

0 

0 

0 

0 

0

0 

0 

0 

0 

0

O 

0 

0 

0 

0

0 

0 

0 

2.6 

21

16 

7.8 

3.4

Month

Oct 

No? 

Dec

C

Jan 

Pel 

Mar 

Apr 

Maj 

JUE 

Jul 

Aug 

Sej

n

alendar year 19< 0... ...................

ater year 194O--4

liar.

5.S 

25 

61 

38 

21

9.6 

7.4 

11 

17 

19

9.6 

S.2 

5.0 

2.6 

1.5

1.0 

2.0 

4.4 

S.6 

18

19 

12 

6.6 

4.4 

2.8

1.7 

1.1 

1.8 

3.0 

2.6 

1.6

Apr.

1.1 

.4 

O 

2.2 

3.0

7.4 

3.0 

1.1 

.3 

.4

.2 

.3

O 

.6 

.6

.1 

0 

.2 

.2

0

.6 

1.0 

3.4 

4.6 

2.8

1.2 

,4 

0 

O 

0

Secondfoot-days

0 

0 

0

139. 0

0 

50.8 

338.3 

35.1 

0 

0 

0 

0 

0

418.2

May

Maximum

0 

0 

0

33

0 

21

61 

7.4 

0 

0 

0 

0 

0

61

June July

Ninlmum

0 

O 

0

O

O 

0 

1.0 

0 

0 

0 

O 

O 

O

0

Aug.

Mean

0 

0 

0

.38

0 

1.81 

1O.7 

1.17 

O 

O 

0 

O 

0

1.15

Sept.

Run- off in 

acre-feet

0 

0 

0

276

O 

101 

659 

70 

0 

0

o

0 

0

830
122 11UBUTARIES AND DIVERSIONS BETWEEN Bid WOOD RIVER AND CWYHEE RIVER

Jacks Creek near Bruneau, Idaho

Location.- Water-stage recorder, lat. 42°47', long. 115°59', In sec. 27, T.. 7 S., R. 4

 E., 650 feet upstream from confluence with Wlekahoney Creek and 11 miles southwest of 

Bruneau.

Records available.- November 1938 to September 1941.

Extremes.- Maximum discharge during year, 820 second-feet June 13 (gage height, 6.30

 feet from floodmark), from rating curve extended above 50 second-feet by logarithmic 

plotting; no flow during most of year.

1939-41: Maximum discharge, that of June 13, 1941; no flow during moet of period.

Remarks.- Records good except those for days of partly estimated gage heights, which are 

poor. No regulation; ranch diversions above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

8 

3

4 

5

6 

7 

S 

9 

10

11 

IS 

13 

14 

16

16 

17 

18 

19 

20

21 

88 

83 

24 

85

26 

27 

88 

89 

30 

31

Oct.

0.7 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0

b

0 

0 

0

0 

0 

0 

0 

0

.4

0 

0 

0 

0 

0

HOT. Deo. Jan. Feb.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

6.5 

5.8 

2.S 

1.6

.9

.5 

.4 

.5 

2.6

7.3 

15 -17 

20 

8.1

7.3 

3.9 

4.7

Month

Dot 

Hoi

Dec

C

Jar 

Pel 

Mai 

Api 

Ma, 

Jur 

Jid 

Auj 

Sej

«

alendar year 194 0......................

Fater year 1940-4

Mar.

6.0 

13 

7.3 

8.6 

6.5

4.7 

4.1 

4.1 

4.7 

4.7

3.6 

1.7 

1.5 

.9 

.5

.4 

.3 

.4 

.S 

.7

4 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

.4

.7 

.6 

.3 

.2 

.2

.2 

.3 

.6 

.3 

.2

.1 

.1 

0 

0 

0

0 

0 

0 

0 

0 

0

Secondfoot-days

1.1 

0 

0

27.9

0 

104.9 

73.9 

4.1 

1.2 

49.4 

8.5 

.6 

0

243.7

May

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

.7 

0 

0 

0 

0

.5

Maximum

0.7 

0 

0

10

0 

20 

12 

.7 

.7 

26 

7.0 

.6 

0

26

June

0 

0 

0 

0 

0

17 

f3.3 

0 

0 

0

0 

0 

26 

fS.l 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

July

0 

0 

1.5 

f7.0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Minimum

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Aug.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

.6 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Mean

0.04 

0 

0

.OS

0 

3.75 

2.33 

.14 

.04 

1.65 

.27 

.02 

0

.67

Sept.

Run-off In 

acre-feet

2.2 

0 

0

55.3

0 

203 

147 

S.I 

2.4 

98 

17 

1.8 

0

484

f Gage height partly estimated.
OWYHEE RIVER BASIN 123

Wild Horse Reservoir near Gold Creek, Nev.

Location.- Reference point on Wild Horse Dam on Owyhee River, lat. 41°41'10lt , long.

 115°51'20", in NEiNWi sec. 25, T. 44 N., R. 54 E., 8 miles west of Gold Creek. Datum 

of gage is 6,109.18 feet above mean sea level (levels by U. S. Indian Irrigation 

Service).

Drainage area.- 209 square miles.

Records available.- March 1938 to September 1941.

Extremes.- Maximum contents recorded during year, 18,640 acre-feet June 14 (gage height,

 71.0 feet); no contents Oct. 1 to Dec. 30.

1938-41: Reservoir full and flow over spillway May 9-18, 1939; no contents at 

times during each year.

Remarks.- Reservoir IB formed; by concrete arch dam; storage began Mar. 18, "1938. Ca-

 pacityt 32,690'acre-feet between gage height 20.0 feet (sill of outlet gate) and 80.0 

feet (spillway crest). No dead storage. Water is used for irrigation on the Duck 

Valley project.

Cooperation.- Gage-height record and base data for capacity rating furnished by the

 U. a. Indian Irrigation Service.

Contents, in acre-feet, water year October 1940 to September 1941

Date

Oct.- 25

Nov. 25

Dec. 19

Jan. 27

Feb. 24

Mar. 27

Contents

0

0

0

269

488

1,290

Date

Apr. 25

May 24

25

June 14

25

July 10

Contents

9,690

17,010

17,500

18,640

18,000

16,520

Date

July 14

25

2S

Aug. 25

Sept. 4

25

Contents

16,370

14,790

14,270

12,380

11,430

11,610

- Reservoir gates were closed and storage began on

461677 O- 42-9
124 CWYHEE RIVER BASIN

Owyhee River near Qold Creek, Nev.

Location.- Water-stage recorder, lat. 41 0 41 1 10n , long. 115°51'30n , in NWiNWi sec. 25,

 T. 44 N., R. 54 E., 500 feet downstream from Wild Horse Dam and 8 miles west of town 

of Gold Creek. Altitude, 6,130 feet (from topographic map).

Drainage area.- 209 square miles.

Records available.- March 1916 to September 1925, October 1936 to September 1941.

Average discharge.- 12 years (1917-21, 1922-25, 1936-41) 37.4 second-feet.

Extremes - Maximum daily discharge during year, 109 second-feet (regulated) June 24

 (gage height, 2.82 feet); practically no flow Dec. 31 to June 3, Sept. 5-30 when reservoir gages were closed.

1916-25, 1936-41: Maximum discharge, 1,810 second-feet May 5, 1922 (gage height, 

10.11 feet, site and datum then in use) from rating curve extended above 400 secondfeet; practically no flow at times when reservoir gates were closed.

Remarks.- Records good except those for period of ice effect, which are fair. Small

 diversions above station for irrigation. Flow regulated by Wild Horse Reservoir 

(see preceding page).

Rating table, water year 1940-41, except period of Ice effect (gage height, in feet, and 

discharge, In second-feet)

.3

.9

1.6

1.0 

1.2 

1.4 

1.6

1.8 

2.0 

2.2 

2.4

2.6 

2.8 

3.0 

3.3

83

106

132

177

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

5 

4 

4 

4 

4

4 

4 

4 

4 

4

4

4 

4 

4 

4

4 

4 

4 

4 

4

4 

4 

4 

5 

5

5 

6 

5 

5 

5 

5

Nov.

5 

5 

5 

5 

5

5 

5 

5 

5 

5

5 

5 

5 

4 

5

5 

5 

5 

5 

5

5 

5 

5 

5 

5

5 

5 

5 

5 

6

Dec.

7 

7 

7 

7 

7

7 

7 

6 

6 

6

5 

4 

4 

3 

3

4 

4 

4 

4 

4

5 

5 

6 

6 

6

6 

6 

b5 

b5 

2 

0

Jan. Feb.

Month

.Dot 

Non 

Dec

C

Jan 

Fet 

Mar 

Apr 

Maj 

Jiin 

Jul 

Au( 

Set

1

alendar year 1940 ......................

11.....................................

ater year 1940-4

Mar. Apr.

Seeondfoot-days

134 

150 

158

7,689

0 

0 

0 

0 

0 

1,417 

1,518 

1,062 

123

4,562

May

Maximum

6

5 

7

166

0 

0 

0 

0 

0 

109 

105 

67 

36

109

June

0 

0 

0 

13 

50

50 

50 

50 

50 

50

50 

50 

50 

40 

25

25 

25 

25 

25 

24

27 

44 

44 

67 

109

107 

107 

106 

98 

56

July

2S 

21 

13 

13 

13

13 

12 

11 

10 

22

32 

32 

32 

40 

49

49 

49 

68 

81 

81

81 

80 

88 

105 

105

94 

85 

69 

54 

 44 

44

Minimum

4 

4 

0

"0

0 

0 

0 

0 

0 

13 

10 

17 

15

0

Aug.

44 

44 

46 

46

47

47 

47 

47 

58 

67

56 

26

17

17 

17

17 

17 

18 

18 

18

17 

17 

24 

36 

37

37 

36 

36 

36 

36 

36

Mean

4.3 

5.0 

5.1

21.0

0 

0 

0 

0 

0 

47.2 

49.0 

34.3 

4.1

12.5

Sept.

36 

36 

36 

15 

0

0 

0 

0 

0 

0

0 

0 

Q 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Run-off in 

acre-feet

266 

298 

313

15,240

0 

0 

0 

0 

0 

2,810 

3,010 

2,110 

244

9,050

b Stage-discharge relation affected by ice.
OWYHEE RIVER BASIN 125

Owyhee River at Mountain City, Nev.

Location.- Water-stage recorder, lat. 41°50', long. 115°59', In SEi sec. 36, T. 46 N., 

 R. biS K., at Mountain City, 1 mile downstream from California Creek.

Drainage area.- 350 square miles.

Records available.- May to December 1913, November 1926 to September 1941.

Average discharge.- 15 years (1926-41), 85.8 second-feet. .

Extremes.- Maximum discharge during year, 375 second-feet (regulated) May 4 (gage height, 

3.34 reet); minimum dally, 7 second-feet Oct. 2, but may have been less during period 

of Ice effect.

1913, 1926-41: Maximum discharge, 1,830 second-feet Apr. 20, 1936 (gage height, 

7.6 feet), from rating curve extended above 600 second-feet; no flow July 29 to 

Sept. 15, 1931, July 21 to Sept. 18, 1934.

Remarks.- Records good except those for periods of Ice effect, or doubtful or no gageheight record, which are fair. Diversions above station for Irrigation. Flow regulated by Wild Horse Reservoir (see p. 123).

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

9 

7 

8 

8 

8

S 

8 

S 

9 

9

9 

9 

9 

9 

9

9 

9 

9 

9 

9

9 

9 

9 

9 

9

14 

15 

12 

11 

11 

10

NOT.

10 

12 

14 

12 

11

11 

12 

12 

11 

11

10 

10 

11 

13 

13

11 

10 

9 

9 

9

9 

9 

9

9 

10

12 

13 

14 

16 

18

Dec.

14 

12

Jan.

10

Feb.

> 10

11

12 

14 

16 

18 

20

23 

24 

24 

26 

29

32 

40 

60 

106

88

70 

52 

64

Month

Dot 

No\ 

Dec

C

Jar 

Pel 

Mai 

Apt 

Maj 

Jur 

Ju: 

Aug 

Sej

H

alendar year 194 ^. .....................

ater year 1940-4

liar.

206 

156 

80 

66 

58

55 

55 

62 

71 

62

65 

62 

62 

56 

55

64 

93 

112 

100 

93

83 

83 

82 

71 

74

90 

110 

123 

121 

119 

126

Apr.

132 

128 

121 

114 

119

108 

105 

107 

119 

135

121 

115 

110 

107 

117

115 

108 

107 

102 

96

96 

105 

a!20 

a!40 

a!60

alSO 

a210 

a240 

a270 

300.

Secondfoot-days

290 

340 

392

21,025

310 

819 

2,715 

4,107 

6,991 

3,640 

1,964 

1,497 

463

23,528

May

319 

316 

349 

362 

316

322 

2 Si 

292 

319 

295

285 

309 

309 

288 

243

196 

174 

180 

173 

14 S

128 

115 

112 

110 

132

161 

198 

157 

137 

133 

132

Maximum

15 

18

234

106 

206 

300 

362 

178 

110 

95 

45

362

June

117 

108 

102 

98 

128

137 

173 

178 

167 

146

130 

130 

128 

139 

105

98 

95 

90 

85 

82

77 

90. 

80 

100 

133

135 

141 

159 

152 

137

July

82 

68 

54 

47 

43

27 

33 

30 

27 

26

44 

42

42 

43 

55

56 

56 

62 

85 

85

85 

85 

85 

105 

110

108 

95 

93 

71 

62 

58

Minimum

7 

9

1

55 

96 

110 

77 

26 

£3 

9

7

Aug.

56 

58 

55 

58 

58

58 

56 

74 

95 

85

77 

72 

43 

25 

23

33 

33 

32 

31 

31

30 

30 

30 

39 

45

45 

45 

45 

45 

45 

45

Mean

9.4 

11.3 

12.6

57.4

10 

29.2 

87.6 

137 

226 

121 

63.4 

48.3 

15.4

64.5

Sept.

45 

45 

45 

45 

21

15 

12 

10 dio dio

dlO 

d9 

d9 

d9 

h9

d9 

d9 

dlO 

dlO 

dll

dll 

nil 

dll 

dll 

dll

dll 

dll 

11 

11 

11

Run-off In 

acre-feet

575 

674 

778

46,700

615 

1.6EO 

5,390 

8,150 

13,870 

7,220 

3,900 

2,970 

918

46,680

a No gage-height record; discharge computed on basis of records near Owyhee.

d Doubtful gage-height record; discharge interpolated.

h Discharge computed from dally gage reading.

Hote.-* Stage-discharge relation affected by Ice Nov. 13 to Feb. 26.
126 OWYHEE RIVER BASIN

Owyhee River above China diversion dam, near Owyhee, Nev.

Location.- Water-stage recorder, lat. 41°55', long. 116°05', in NWi sec. 6, T. 46 N., R.

 53 E.,' 1,000 feat downstream from Skull Creek, 1 mile upstream from the China diversion dam, and 2& miles southeast of Owyhee.

Drainage area.- 458 square miles.

Records available.- March 1939 to September 1941.

Extremes (regulated).- Maximum discharge during year, 610 second-feet May 11 (gage height, 

5.90 reet); minimum daily, 11 second-feet Oct. 6-11.

1939-41: Maximum discharge, 1,430 second-feet Mar. 25, 1939 (gage height, 6.76 

feet, datum then In use), from rating curve extended above 240 second-feet; minimum 

dally, 2 second-feet Sept. 15-18, 1940.

Remarks.- Records good except those for periods of ice effect or no gage-height record,

 which are fair. Diversions above station for irrigation. Flow regulated by Wild 

Horse Reservoir (see p. 123).

Rating table, water year 1940-41, except period of Ice effect (gage height, In feet, and

discharge, In second-feet) 

(Shifting-control method used Aug. 8 to Sept. 30)

1.0 4

1.2 S

1.4 15

1.6 24

1.8 35

2.0 49

2.3 74

2.6 103

3.0 148

3.3 184

3.6 223

4.0 27S

4.5 355

5.0 440

5.5 532

6.0 630

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

13 

12 

12 

12 

12

11 

11 

11 

11 

11

11 

12 

12 

11 

12

12 

13 

13 

13 

13

13

13 

13 

14 

15

19 

25 

21 

20 

19 

18

Nov.

18 

22 

23 

21 

20

20 

20 

20 

21 

20

19 

19 

20 

22 

22

20 

b!9 

b!8 

bis 

bis

b!8 

b!8 

b!8 

b!8 

b!9

b20 

b22 

b23 

t>24 

26

Dec.

26 

25 

23 

20

| b!9

> b!8

Jan.

' b!6

Feb.

b!4 

b!4 

b!4 

b!4 

b!5

blS 

b!6 

b!6 

b!6 

bl8

b20 

ToSS 

b24 

b26 

b28

b33 

b34 

b34 

b36 

b40

b47 

64 

95 

142 

124

89 

75 

82

Month

Got 

HOT 

Dec

C

Jar 

Pel 

Mai

Apj 

Ma, 

Jur 

Ju] 

Au{ 

Sej

f

alendar year 194

ater year 1940-4 i. .....................

Mar.

223 

256 

118 

93 

80

72 

71 

77 

S8 

78

78 

77 

75 

67 

63

72 

97 

137 

125 

118

101 

102 

101 

85 

86

101 

125 

152 

155 

143 

166

Apr.

164 

168 

159 

146 

154

143 

135 

134 

150 

176

170 

160 

150 

148 

158

160 

148 

143 

141 

13S

136 

143 

166 

197 

219

254 

275 

312 

349 

396

Secondfoot-days

428 

606 

5S6

28,358

496 

1,16S 

3,382 

5,492 

11,157 

5,085 

2,066 

1,290 

553

32,309

May

440 

447 

521 

547 

490

472 

460 

505 

54.7 

526

542 

534 

505 

469 

390

333 

299 

299 

275 

240

213 

193 

183 

176 

193

233 

2SB 

235 

204 

201 

197

Maximum

25 

26 

26

337

142 

256 

396 

547 

311 

118 

77 

37

547

June

174 

161 

152 

143 

162

1S5 

281 

311 

274 

240

210 

201 

193 

200 

167

148 

141 

134 

125 

116

110 

104 

103 

95 

130

150 

158 

178 

178 

161

July

11S 

89 

76 

65 

60

55 

48 

45 

41 

38

45 

4S 

46 

46 

51

55 

55 

55 

73 

78

78 

7S 

77 

86 

97

100 

90 

87 

71 

60 

55

Minimum

11 

18

-

14 

63 

13S 

176 

95 

3S 

25

-

Aug.

52 

51 

51 

51 

51

51 

50 

55 

77 

71

71 

67 

43 

31 

29

28 

28 

28 

26 

26

26 

26 

25 

28 

35

36 

35 

35 

35 

36 

36

Mean

13. S 

20.2 

18.9

77.5

16 

41.7 

109 

183 

360 

170 

66.6 

41.6 

18.4

88.5

Sept.

35 

36 

37 

37 

29

19 

16 

16 

15 

14

14 

15 

15 

a!5 

a!5

a!5 

al6 

alS 

a!5 

alS

a!5 

a!5 

a!5 

a!5 

alS

alS 

alS 

alS 

15 

15

Run-off In 

acre-feet

849 

1,200 

1,160

56,260

984 

2,320 

6,710 

10,890 

22,130 

10,090 

4,100 

2,560 

1,100

64,090

a Ho gage-height record; discharge computed on basis of records at Mountain City. 

Note.- Stage-discharge relation affected by Ice Hov. 17 to Feb. 21.
OWYHEE RIVER BASIN 127

Owyhee River above Owyhee Reservoir, Oreg.

Location.- Water-stage recorder, lat. 43°13', long. 117°30', in SEi sec. 18, T. 27 3., 

R. 43 E., 3 miles upstream from flow line of Owyhee Reservoir and 8 miles southwest 

of Watson. Altitude of gage, about 2,690 feet above mean sea level (levels by Bureau 

of Reclamation).

Drainage area.- 10,400 square miles.

Records available.- October 1930 to September 1941 in reports of Geological Survey. 

April 192S to September 1936 in reports of Oregon State engineer.

Average discharge.- 12 years, 746 second-feet.

Extremes.- naxlmum discharge during year, 9,560 second-feet Mar. 3 (gage height, 10.68

 feet')'; minimum, 171 second-feet Oct. 17-24 (gage height, 3.84 feet).

1929-41: Maximum discharge, 16,000 second-feet Mar. 20, 1932, Apr. 19, 1936; 

naxlmum gage height, 12.95 feet Mar. 20, 1932; minimum discharge, 103 second-feet 

Aug. 19, 1932 (gage height, 3.57 feet).

Remarks.- Records good except those for period of no gage-height record, which are poor. 

Diversions above station for Irrigation. Flow slightly regulated by 11 small reservoirs which have a total capacity of 52,000 acre-feet.

Cooperation.- Water-stage recorder inepected and some discharge measurements furnished 

by Bureau of Reclamation.

Rating tables, water year 1940-41 

Oct. 1 to Dec. 9

3.8 161

4.0 213

4.2 273

4.4 341

4.6 417

4.9 554

5.3 7SO

ge height, In feet, and discharge, In second-feet) 

Dec. 10 to Sept. 30

3.9 

4.2 

4.4 

4.6 

4.9

195

262

350

426

560

5.2 

5.6 

6.0 

6.5 

7.0

720

970

1,260

1,680

2,150

S.O 3,390

9.0 5,180

10.0 7,550

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

174 

178 

178 

176 

17S

184 

184 

181 

1S1 

178

176 

176 

176 

174 

174

174 

174 

174 

174 

174

171 

171 

171 

174 

176

208 

264 

267 

539 

466 

732

Nov.

595 

644 

4S1 

514 

495

401 

371 

341 

378 

504

472 

458 

390 

356 

327

316 

313 

299 

299 

327

409 

450 

363 

313 

267

261 

2SO 

267 

254 

258

Dec.

254 

2SO 

324 

320 

334

324 

324 

316

306 

s

' a215

,

Jan.

a240 

a235 

a240 

a245 

a255

a255 

257 

270 

263 

260

257 

254 

251 

273 

266

273 

2S2 

276 

285 

285

289 

298 

298 

308 

318

315 

308 

308 

292 

276 

2S2

Feb.

263 

266 

260 

260 

260

266 

3SO 

1,020 

91S 

1,640

2,560 

3,680 

4,300 

3,160 

2,000

1,470 

1,230 

1,210 

1,690 

2,020

2,380 

2,400 

3,380 

4,660 

5,S4O

4,720 

3,380 

2,440

Month

Oct 

No\ 

Dec

C

Jar 

Fet 

Mat 

Api 

Maj 

Jur 

Ju3 

AUJ! 

Sei

H

alendar year 1940....... ...............

y......................................

Pater year 1940-4

Mar.

2,440 

4,560 

7,280 

4,080 

3,140

2,740 

2,420 

2,290 

2,390 

2,500

2,230 

1,950 

1,330 

1,680 

1,450

1,250 

1,120 

1,320 

2,630 

2,730

2,230 

1,850 

1,720 

1,700 

1,630

1,420 

1,660 

2,210 

2,350 

2,200 

1,910

Apr.

1,880 

1,710 

1,630 

1,970 

2,180

2,040 

2,650 

2,320 

1,350 

1,730

1,740 

1,900 

2,460 

2,220 

1,840

1,690 

1,560 

1,380 

1,270 

1,270

1,240 

1,200 

1,170 

1,120 

1,050

991 

977 

977 

1,010 

1,080

Secondfoot-days

6,897 

11,403 

7,512

223,546

8,514 

58,053 

72,910 

48, 155 

42,087 

25,316 

10,890 

6,727 

6,115

305, 079

May

1,170 

1,300 

1,640 

1,890 

2,010

2,100 

1,960 

1,830 

1,740 

1,700

1,690 

1,600 

1,510 

1,470 

1,480

1,530 

1,520 

1,440 

1,280 

1,160

1,050 

1,020 

931 

622 

750

692 

626 

698 

938 

1,240 

1,300

Maximum

732 

644 

334

6,400

31S 

5,840 

7,280 

2,650 

2,100 

1,700 

792 

232 

211

7,280

June

1,240 

1,070 

1,010 

9o4 

905

79S 

750 

304 

991 

1,420

1,700 

1,530 

1,300 

1,070 

892

798 

774 

786 

756 

670

616 

575 

5SO 

525 

475

434 

414 

462 

550 

957 

-

July

792 

73S 

6S2

605

545 

479 

438 

395 

361

340 

308 

289 

276 

270

263 

270 

£51 

248 

242

234 

231 

225 

214 

214

214 

217 

217 

223 

219 

214

Minimum

171 

254

132

235 

260 

1,120 

977 

626 

414 

214 

200 

193

171

Aug.

211 

214 

214 

219 

222

222 

217 

214 

208 

208

206 

203 

203 

200 

203

206 

242 

262 

217 

222

225 

234 

236 

217 

214

211 

208 

208 

214 

214 

211

Mean

222 

380 

242

611

275 

2,073 

2,352 

1,605 

1,358 

861 

351 

217 

204

836

Sept.

20S 

211 

206 

20S 

211

208 

203 

203 

200 

203

200 

203 

203 

203 

203

203 

203 

203 

203 

203

200 

19S 

200 

200 

200

206 

206 

206 

206 

203

Run-off In 

acre-feet

13,630 

22,620 

14,900

443,400

16,390 

115,100 

144,600 

95,510 

33,430 

51,210 

21,600 

13,340 

12,130

605,100

a No gage-height record; discharge computed on basis of records for Owyhee Reservoir at Owyhee 

Dam.
128 OWYHEE RIVER BASIN

Owyhee Reservoir at Owyhee Dam, near Nyssa, Oreg.

Owyhee Reservoir.- Staff gage, lat. 43°38', long. 117°15', in sec. 20, T. 22 S., R. 45 

E., at owynee Darn, 21 miles southwest of Nyssa. Datum of gage Is at mean sea level 

(levels by Bureau of Reclamation). Drainage area, 11,160 square miles. Records 

available, October 1932 to September 1941. Maximum contents observed during year, 

1,121,800 acre-feet Apr. 1-24 (elevation, 2,670.00 feet); minimum observed, 797,600 

acre-feet Oct. 25 (elevation, 2,641.07 feet). Maximum contents observed during period 

1932-41, 1,125,000 acre-feet June 11, 1936 (elevation, 2,670.27 feet); minimum observed 

since full capacity was attained on May 7, 1936, 754,100 acre-feet Oct. 22, 1939 (elevation, 2,636.48 feet).

Reservoir Is formed by concrete arch-gravity dam, completed In September 1932; storage began Oct. 16, 1932. Capacity, 1,121,800 acre-feet (revised) between elevations 

2,367.5 feet (bottom of sluice gates) and 2,670 feet (top of spillway gate), and 

715,000 acre-feet between elevations 2,590.2 feet (diversion tunnel) and 2,670 feet. 

Dead storage below elevation 2,367.5 feet negligible. Figures given herein are of 

contents above elevation 2,367.5 feet. The reservoir will generally not be drawn below elevation 2,590.2 feet. Water is released through diversion tunnel to South canal 

for irrigation of lands west of Snake River in the vicinity'of Homedale, Idaho, and to 

North canal for irrigation of lands north and west of Owyhee River, and through sluice 

gates to river for Owyhee canal, which diverts about 18 miles downstream. Gage read 

once daily by employees of Bureau of Reclamation.

Monthly gage height and contents, water year October 1940 to September 1941

Date

Calendar year 1940. . .

Water year 1940-41. . .

Elevation 

(feet)

-

-

Contents 

(acre-feet)

-

-

Chang* In contents 

during month 

(acre-feet)

+61,900

+74,400
OWYHEE RIVER BASIN 129

Owyhee River below Owyhee Dam, Oreg.

Location.- Water-stage recorder, lat. 43°39', long. 117°15', In sec. 17, T. 22 S., R. 45

E., tnree-quarters of a mile downstream from Owyhee Dam. Datum of gage Is 2,343.67

feet above mean sea level (levele by Bureau of Reclamation). 

Drainage area.- 11,160 square miles. 

Records available.- February 1929 to September 1941. 

Average discharge.- 12 years, 409 second-feet.

Extremes.- Maximum discharge durUig year, 4,090 second-feet Apr. 1 (gage height, 7.02 

 feet); minimum, 6.9 second-feet Oct. 29 to Feb. 25.

1929-41: Maximum discharge, 14,600 second-feet Mar. 21, 1932 (gage height, 12.79

feet); no flow for a few hours Aug. 8, 9, 1932, when temporary diversion tunnel above

Owyhee Dam was closed. 

Remarks.- Records good. Diversions above station for Irrigation. Flow regulated by

owynee Reservoir (see p. 128). 

Cooperation.- Water-stage recorder Inspected and gage readings during periods of low

flow, Oct. 1-18, Oct. 26 to Mar. 5, and some discharge measurements furnished by

Bureau of Reclamation.

Rating table, water year 1940-41 (gage height, 

discharge, in second-feet)

In feet, and

12

21

36

56

78

1.0 

1.3 

1.6

103

150

207

278

359

458

3.0 

3.5 

4.0 

4.5 

5.0 

5.5

670

940

1,240

1,590

1,970

3,400

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

37 

26 

29 

30 

31

Oct.

9.0 

9.6 

9.0 

9.0 

9.0

9.0 

9.0 

9.0 

9.0 

9.0

9.0 

9.0 

9.0 

9.0 

9.0

9.0 

9.0 

9.0 

66 

116

116 

116 

116 

116 

62

7.8 

7.8 

7.2 

6.9 

6.9 

6.9

Nov.

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

Dec.

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9 

6.9

Jan.

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9 

6.9

Feb.

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

7,2 

7.5 

7.5

Month

Oct 

HOT 

Dec

C

Jar 

Pet 

Mai 

Apt 

Maj 

Jur 

Jul 

Aug 

Sei

U

alendar year 194

ater year 1940-4

Peak discharge. -

Note.- Discharge

liar.

7.5 

7.5 

7.5 

7.5 

7.5

1,030 

839 

469 

524 

643

618 

565 

406 

268 

309

172 

51 

44 

76 

193

15E 

116 

86 

55 

45

43 

42 

43 

44 

252 

582

Apr.

2,510 

1,360 

664 

85S 

2,080

1,820 

1,570 

2,440 

1,320 

1,130

1,660 

1,000 

1,790 

2,190 

803

765 

781 

680 

477 

374

360 

374 

373 

311 

211

216 

234 

227 

222 

220

Secondfoot -days

913.5 

207.0 

313.9

33,015.0

213.9 

194.7 

7,591.5 

39,030 

5,448 

3,809 

5,727 

5,012 

4,332

62,682.5

May

195 

195 

195 

197 

203

199 

174 

168 

168 

166

170 

174 

174 

174 

174

174 

174 

174 

174 

174

174 

174 

174 

174 

174

174 

174 

174 

164 

147 141?

Maximum

116 

6.9 

6.9

1,160

6.9 

7.5 

1,030 

2,510 

203 

185 

169 

193 

147

2,510

June

147 

136 

125 

125 

120

117 

97 

12 

12 

12

12 

3S 

123 

127 

130

143 

185 

185 

181 

163

164 

164 

164 

170 

174

164 

155 

155 

155 

155

July

155 

155 

165 

176 

189

189 

189 

189 

189 

189

189 

189 

169 

1S9 

189

189 

189 

189 

189 

169

189 

189 

189 

189 

189

189 

189 

189 

189 

189 

172

Minimum

6.9 

6.9 

6.9

-

6.9 

6.9 

7.5 

211 

147 

12 

155 

142 

143

6.9

Aug.

150 

150 

150 

163 

1S5

181 

181 

181 

181 

181

183 

183 

169 

193 

191

181 

165 

143 

142 

145

146 

147 

150 

150 

150

147 

143 

143 

143 

143 

143

Mean

29.5 

6.90 

6.90

90.2

6.90 

6.95 

245 

968 

176 

127 

185 

162 

144

172

Sept.

143 

143 

145 

145 

146

145 

145 

145 

147 

147

145 

143 

143 

143 

143

143 

143 

143 

143 

143

143 

143 

143 

143 

143

145 

145 

145 

145 

145

Run- off in 

acre-feet

1,810 

411 

434

65, 480

424 

386

15,060 

57,580 

10,610 

7,560 

11,360 

9,940 

8,570

184,340

Apr. 1 (6 p.m.) 4,090 see. -ft.; Apr. 8 (8 a. a.) 3,100 sec. -ft. 

Oct. 1-16, Oct. 26 to liar. 5 based on readings of staff gage.
130 BOISE RIVER BASIN 

Boise River near Twin Springs, Idaho

Location.- Water-stage recorder, lat. 43°40', long. 115°44', in sec. 27, T. 4 N., R. 6 E.

 a quarter of a mile upstream from Birch Greek, Ifr miles upstream from flow line of 

Arrowrock Reservoir, 4 miles downstream from Twin Springs, and 13 miles upstream from 

Arrowrock.

Drainage area.- 830 square miles.

Records available.- March 1911 to September 1941.

Average discharge.- 30 years, 1,095 second-feet.

Extremes.- Maximum discharge during year, 4,830 second-feet May 27 (gage height, 5.72

 feet); minimum, 160 second-feet Dec.' 12 (gage height, 1.86 feet).

1911-41: Maximum discharge, 10,300 second-feet May 17, 1927 (gage height, 8.30 

feet), from rating curve extended above 8.000 second-feet; minimum, 133 second-feet 

Dec. 15, 16, 1935 (gage height, 1.56 feet).

Remarks.- Records good except those Dec. 17 to Jan. 8, which are fair. No diversions or 

regulation.

Cooperation.- Result of one discharge measurement furnished by watermaster for Boise 

River.

Discharge, in second-feet, mater year October 1940 to September 1941

Day

1 

2 

3 

4

6

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oot.

374 

506 

615 

506 

450

426 

403 

3S5 

374 

362

356 

351 

340 

345 

&340

a 335 

&330 

a325 

h323 

&320

&320 

&320 

317 

323 

456

426 

414 

408 

397 

40S 

444

Mov.

4S6 

566 

559 

500 

444

456 

46S 

532 

512 

474

450 

397 

306 

385 

414

403 

438 

480 

403 

351

403 

356 

301 

345 

43S

356 

356 

391 

486 

519

Deo.

450 

432 

426 

420 

40S

432 

403 

3S5 

391 

312

236 

190 

195 

210 

279

334 

D470 

b520 

486 

a435

h379 

a400 

a400 

&400 

a400

a400 

a450 

h43S 

a400 

a400 

&400

Jan.

&350 

&320 

&300 

h340 

a400

a450 

a450 

a400 

328 

32S

323 

317 

356 

403 

379

362 

351 

356 

362 

356

356 

356 

356 

362 

379

397 

379 

323 

323 

356

Month

Oot 

Mov 

Dee

C

Jan' 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Augi 

Sep

W

uary

ater year 1940-4

Feb.

374 

414 

3S5 

356 

36S

397 

462 

456 

432 

438

46S 

519 

474 

450 

438

414 

414 

420 

444 

426

420 

444 

414 

526 

532

462 

462 

486

Seeondfoot-days

11,999 

12,975 

11,881

377,497

11,180 

12,295 

20,522 

37,050 

83,950 

66,740 

21,123 

13, 157 

10,904

313,776

Mar.

566 

660 

622 

573 

552

538 

519 

538 

566 

559

580 

5SO 

566 

512 

512

532 

566 

594 

698

714

690 

698 

690 

668 

675

738 

S12 

S84 

980 

1,080 

1,060

Maximum

615 

566 

520

5,020

450 

532 

1,080 

2,020 

4,290 

3,060 

1,110 

698 

414

4,290

Apr.

l.OSO 

1,160 

1,230 

1,150 

1,220

1,120 

1,060 

1,020 

1,030 

1,160

1.1SO 

1,270 

1,350 

1,330 

1,330

1,290 

1,180 

1,100 

1,010 

970

960 

970 

1,040 

1,170 

1,260

1,360 

1,490 

1,670 

1,820 

2,020

May

2,120 

2,090 

2,260 

2,400 

2,330

2,190 

1,950 

2,000 

1,890 

1,860

2,110 

3,060 

3,950 

3,460 

2,820

2,540 

2,470 

2,690 

2,400 

2,190'

2,190 

2,620 

3,140 

3,460 

3,620

4,120 

4,290 

3,460 

2,820 

2,690 

2,760

M^

317 

301 

190

190

300 

356 

512 

960 

1,860 

1,180 

46S 

368 

328

190

June

2,690 

2,400 

2,470 

2,540 

2,470

2,470 

2,690 

2,840 

2,540 

2,330

2,400 

2,620 

2,840 

3,060 

2,840

2,620 

2,330 

2,260 

2,470 

2,190

1,950 

1,860 

1,870 

1,760 

1,610

1,440 

1,360 

1,350 

1,290 

1,130

Mean

387 

432 

383

1,031

361 

439 

662 

1,235 

2,708 

2,225 

6S1 

424 

363

860

Jfcly

1,110 

1,060 

1,030 

970 

922

8S4 

838 

812 

778 

746

722 

706 

675 

652 

652

630 

601 

573 

573 

559

538 

519 

500 

486 

474

468 

587 

545 

552 

493 

468

Per 

square

mile

0.466 

.520 

.461

1.24

.435 

.529 

.798 

1.49 

3.26 

2.68 

.S20 

.511 

.437

1.04

Aug.

444 

432

414 

397 

386

379 

374 

36S 

374 

403

432 

698 

500 

438 

408

391 

391 

638 

500 

450

426 

414 

408 

391 

397

397 

397 

385 

379 

379 

368

Sept.

351 

368 

403 

391 

379

374 

362 

356 

351 

351

351 

414 

385 

368 

385

397 

374 

356 

351 

379

368 

356 

351 

351 

351

345 

340 

334 

334 

328

Run of f

Inches

0.54 

.58 

.53

16.91

.50 

.55 

.92 

1.66 

3.76 

2.99 

.95 

.59 

.49

14.06

Acre-feet

23,800 

25,740 

23 ,-570

748,700

22, ISO 

24,390 

40,700 

73,490 

166,500 

132, 400 

41,900 

26,100 

21, 630

622,400

a No gage-height record; discharges computed on basis 

rock Reservoir and for nearby stations.

b Stage-discharge relation affected by Ice. 

h Computed from staff-gage readings.

of weather records and records for Arrow-
BOISE RIVER BASIN 131

Arrowrock Reservoir at Arrowrock, Idaho

Location.- Graduations on upstream face of dam on Boise River, lat. 43°36', long. 115°55', 

in m sec. 13, T, 3 N., R. 4 E,, at Arrowrock, 22 miles by road east of Boise. Datum of 

gage Is at mean sea level (surveys of Bureau of Reclamation).

Drainage area.- 2,210 square miles.

Records available.- October 1917 to September 1941.

Extremes.- Maximum contents observed during year, 300,600 acre-feet Hay 27 (elevation,

3.218.9 feet); minimum observed, 39,090 acre-feet Sept. 30 (elevation, 3,085.1 feet). 

1917-41: Maximum contents observed, 300,900 acre-feet Hay 4, 5, 1939 (elevation,

3.219.0 feet); no storage during period in each of several years when natural flow was 

passing through reservoir.

Remarks.- Reservoir is formed by gravity-section concrete-arch dam completed In 1915 and 

raised 5 feet In 1937; storage began In 1915. Capacity, 291,600 acre-feet between elevations 2,956 (11 feet below center line of sluice gates, 8.5 feet below sill) and 

3,216 feet (crest of movable spillway at highest position). Dead storage negligible. 

Figures given herein represent total contents, which, project officials state, may have 

been reduced as much as 5,000 or 6,000 acre-feet by the deposition of silt. Water Is 

used for Irrigation of lands In Boise Valley, Gage read once dally about 8 a.m.

Cooperation.- Gage-height record and capacity table furnished by Bureau of Reclamation.

Contents, In acre-feet, water year October 1940 to September 1941

Day

1

2

5

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

42,960

42,330

42,420

42,780

42,780

42,780

42,510

42,240

41,880

42,600

43,320

44,200

45,000

45,700

46,500

46,900

47,400

47 , 900

48,300

47,700

46,500

45,000

43,500

42,240

41.O70

42,780

44,500

46,200

47,900

49,490

51,250

Uov.

53,120

55.0SO

57 , 480

59,640

61,820

63,610

65,460

67,670

69,750

71,700

73,560

75,240

76,920

78,040

79,440

81,200

82,850

84,660

86,600

88,300

89,580

90,540

90,060

88,940

88,140

87,350

86,600

85,700

85,100

84,950

-

Dec.

84,660

84,200

83,450

82,400

81,800

81,200

80,600

80,150

79,446

78,740

77,760

76,360

74,820

73,140

71,700

70,140

71,180

72,610

74,680

76,640

78,320

80,300

82,250

84,200

86,000

87 , 980

89,740

91,820

93,580

95,180

97,030

Jan.

98,730

99,920

101,100

102,300

103,500

105,200

106,700

108,400

109,800

111,300

112,700

113,900

115,000

116,600

118,400

120,100

121,700

123,200

124,700

126,200

127,800

129,300

130,800

132 , 400

134,200

136,200

138,200

139,800

141,200

142,600

144,200

Feb.

145,600

147,000

148,200

149,400

150,000

150,400

150,600

150,900

151,000

151,100

151,400

152,300

153,500

154,400

15!3,000

155,700

156,400

156,800

157,300

158,000

158,800

159,500

160,700

161,900

163,800

165,500

166,800

168,100

_

-

-

Mar.

169,900

171,800

174,200

176,500

178,600

180,400

181,900

183,000

184,400

185,800

186,900

188,300

188,800

189,400

190,100

191,700

193,800

196,400

199,500

202,700

205,800

208,800

211,200

213,000

214,000

214,500

215,200

216,000

216,500

217,200

219,000

Apr.

220*600

222,600

224,700

226,800

228,900

231,700

234,100

235,900

237,700

239,800

243,200

246,300

249,300

252,300

254,500

256,800

257,900

258,200

257,600

256,200

253,700

250,300

247,100

244,000

241,400

238,500

236,000

234,000

233,000

233,000

-

May

234,100

235,600

237,200

240,600

245,000

250,000

254,400

257,900

262,500

266,500

270,500

274,000

280,700

289,100

291,600

294,100

295,300

295,600

295,900

295,300

295,500

295,600

296,600

297,600

298,100

299,000

300,600

300,300

299,000

298,400

297,500

June

297,500

296,200

295,900

296,600

297,200

297,800

298,400

299,000

298,700

298,700

298,400

298,600

298,700

299,000

299,000

298,900

298,400

298,100

298,300

298,100

297,800

297,300

297,200

297,000

296,600

295,600

293,600

292,100

291,300

290,500

-

July

289,400

288,200

236,400

284,300

282,200

279,200

276,200

272,600

269,200

265,400

261,600

257,600

263,400

249,500

245,300

241,400

237,200

233,300

229,100

225,200

221,300

217,500

213,500

209,500

206,000

202,400

198,800

195,900

193,100

190,400

187,600

Aug.

185,100

182,200

179,300

176,200

172,700

169,100

165,300

161,700

157,700

153,500

149,600

147,000

145,400

143,000

140,000

136,900

133 , 800

130,400

128,200

125,500

122,400

119,500

116,500

113,200

110,300

107,700

105,400

102,800

100,400

98,050

95,500

Sept.

92,620

89,420

86,600

83,900

81,060

78,320

75,660

73 , 000

70,400

67,930

65,460

62,860

60,650

58,560

56,520

54,240

51,910

49,490

46,600

43,800

43,320

43,050

42,780

42,510

42,240

42 , 060

41,790

41,520

41,160

39,090

-

Monthly elevation and contents, water year October 1940 to September 1941

Date

Dec. 31.. ..............

Calendar year 1940. . .

Sept. 30................

Water year 1940-41...

Elevation 

(feet)t

3,130.9

-

3 217 9

3,085.1

-

Contents 

(acre-feet)

44 200

97,030

-

39,090

-

Change in contents 

during month 

(acre-feet)

+12,080

+62,060

-56,410

-5,110

t Elevation at about 8 a.m.
132 EOISE RIVER BASIN

Boise River at Bowling Ranch, near Arrowrock, Idaho

Location.- Water-stage recorder, lat. 43°35', long. 115°58', In sec. 15, T. 3 N., R. 4 E., 

at Bowling Ranch, three-quarters of a mile upstream from Moore Creek and 4 miles downstream from Arrowrock.

Bralnage area.- 2,220 square miles.

Records available.- March 1911 to September 1941.

Average discharge.- 30 years, 2,192 second-feet.

Extremes.- Maximum discharge during year, 8,380 second-feet May 27 (gage height, 7.10 feet); 

minimum, 2 second-feet Jan. 12 Cgage height, 0.78 foot).

1911-41: Maximum discharge, 17,600 second-feet my 11, 1928 (gage height, 9.55 feet); 

minimum, 2 second-feet several days in 1935. 1936,1939, and 1941; minimum gage height, 

0.62 foot Nov. 21, 22, 1935.

Remarks.- Records good except those below 20 second-feet, which are fair. Flow regulated 

by Arrowrock Reservoir (see p. 131). No diversions above station.

Cooperation.- Gage-height record furnished by Bureau of Reclamation. Results of four discharge measurements furnished by water-master for Boise River.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

Z 

4

5

6

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

31

Oct.

1,210 

1,060 

1,000 

1,000 

960

942

933 

933 

640 

318

302 

294 

306 

314 

370

415 

415 

420 

701 

1,170

1,360 

1,360 

1,360 

1,360 

534

a

6 

5 

5 

6 

5

»OT.

6 

6 

6 

6 

6

6 

6

6 

6

5

6 

5 

5 

5 

5

5 

5 

6 

5 

23

305 

633 

1,040 

1,140 

1,140

1,140 

1,140 

l,j.50 

1,140 

1,150

Dec.

1,150 

1,240 

1,270 

1,190 

1,140

1,140 

1,060 

1,140 

1,130 

1,130

1,120 

1,120 

1,110 

1,110 

1,110

466 

8 

6 

5 

5

5 

6 

6 

7 

6

7 

8 

7 

6 

6 

6

Jan.

5 

5 

6 

5 

5

5 

5 

5 

4

4

4 

4 

4

7 

6

5 

5 

5 

4

5

5 

5 

5 

6 

8

12 

9 

8 

6 

8 

7

Feb.

6 

89 

239 

322 

486

750 

898 

906 

906 

906

806 

640 

579 

592 

592

592 

592 

598 

605 

553

516 

516 

516 

420 

352

357 

362 

366

Month

Oct 

NOT 

Dec

C

Jar 

Pet 

Hat 

Apr 

Maj 

Jur 

Ju3 

Aug 

Set

11

alendar year 1940 ......................

ater year 1940-4

Mar.

366 

274 

194 

198 

270

375 

492 

605 

647 

712

758 

830 

881 

890 

733

11 

8 

8 

7

7

7 

64 

566 

856 

1,160

1,360 

1,530 

1,650 

1 910 

f,fSO 

1,530

Apr.

1,530 

1,470 

1,470 

1,650 

1,360

1,260 

1,260 

1,260 

1,290 

1,230

1,110 

1,210 

1,410 

1,650 

1,980

2,260 

2,490 

2,820 

2,900 

3,260

3,640 

3,730 

3,B50 

4,030 

4,130

4,240 

4,240 

4,130 

4,030 

3,930

Secondfoot -days

19,712 

10,107 

17,710

697,763

179 

15,052 

20,679 

74,800 

139,160 

125,520 

92,940 

71,820 

47,P24

635,503

May

3,930 

3,830 

3,540 

2,990 

2,740

2,420 

2,340 

2,050 

1,840 

1,980

2,560 

3,260 

3,540 

4,790 

5,040

4,550 

4,880 

5,100 

5,220 

4,660

4,440 

4,660 

5,450 

6,450 

6,980

7,250 

8,090 

7,250 

6,190 

5,690 

5,450

Maxima 

1,360 

1,150

1,270

8.96C

12 

906 

1,910 

4,240 

8,090 

5,570 

3,350 

2,650 

2,120

8,090

June

5,450 

4,770 

4,340 

4,440 

4,340

4,340 

4,770 

5,570 

4,990 

4,550

4,550 

4,550 

4,770 

5,100 

4,990

4,770 

4,340 

4,130 

4,240 

4,130

3,730 

3,440 

3,260 

3,260 

3,260

3,540 

3,350 

2,990 

2,820 

2,740

July

2,740 

2,820 

2,990 

2,990 

3,080

3,170 

3,260 

3,350 

3,260 

3,260

3,260 

3,350 

3,350 

3,350 

3,350

3,260 

3,260 

-3,260 

3,080 

3,080

2,990 

2,990 

2,900 

2,820 

2,740

2,740 

2,650 

2,570 

2,420 

2,340 

2,260

Minimum

5 

5 

5

4

4 

6 

7 

1,110 

1,840 

2,740 

2,260 

1,840 

798

4

Aug.

2,260 

2,340 

2,340 

2,490 

2,490

2,570 

2,570 

2,650 

2,650 

2,65O

2,650 

2,420 

2,420 

2,420 

2,420

2,420 

2,420 

2,340 

2,260 

2,260

2,340 

2,340 

2,260 

2,260 

2,120

1,P80 

1,910 

1,910 

1,840 

1,840 

1,980

Mean

636 

337 

571

1,906

5.8 

538 

667 

2,493 

4,489 

4,184 

2,996 

2,317 

1,594

1,741

Sept.

2,120 

2,120 

2,050 

1,980 

1,980

1,980 

1,980 

1,980 

1,910 

1,840

1,910 

1,840 

1,780 

1,720 

1,780

1,840 

1,910 

2,050 

2,120 

1,370

830 

830 

830 

822 

814

798 

806 

814 

1,300 

1,720

Run-off in 

acre-feet

39,100 

20,050 

35,130

1,384,000

355 

29,860 

41,020 

148,400 

276,000 

249,000 

184,300 

142,500 

94,860

1,261,000
BOISE RIVER BASIN 

Boise River at Boise, Idaho

133

Location.- Water-stage recorder, lat. 43°36'00", long. 116°11 I 30", In NW&M* sec. 14, T. 

3 N., R. 2 E., 700 feet upstream from Broadway Bridge at Boise, Idaho.

Records available.- February 1940 to September 1941.

Extremes.- Maximum discharge during year, 5,730 second-feet May 27 (gage height, 6.53 

reet); minimum recorded, 8 second-feet Mar. 8-15; minimum gage height recorded, 1.93 

feet Mar. 8, 12, 14.

1940-41: Maximum discharge, 6,620 second-feet May 14, 1940 (gage height, 6.76 

feet); minimum recorded, that of Mar. 8-15, 1941; minimum gage height recorded, that 

of Mar. 8, 12, 14, 1941.

Remarks.- Records good except those for periods of fragmentary or no gage-height record, 

which are poor. Flow regulation by Arrowrock Reservoir (see p. 131). New York, Rldenbaugh, and several smaller canals divert between Moore Creek and this station.

Rating tables, water year 1940-41 (gage height, In feet, and discharge,

In second-feet) 

(Shifting-control method used Mar. 17 to May 27)

Oct. 1 to Dec. 5 Dec. 6 to Sept. 30

2.0 11 1.9 6 3.5 610 5.5 3,300 

.2.3 50 2.2 36 3.9 930 5.9 4,200 

2.6 12S 2.5 104 4.3 1,330 6.3 5,200 

2.9 2SO 2.S 208 4.7 1,870 6.6 6,010 

3.2 390 3.1 353 5.1 2,820

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

300 

250 

235 

265 

255

1S6 

172 

172 

162 

176

162 

131 

131 

125 

125

186 

190 

180 

162 

190

15S 

146 

131 

131 

225

218 

131 

104 

95 

101 

92

Nov.

110 

140 

166 

166 

143

126 

119 

125 

149 

146

137 

131 

113 

85 

S7

97 

119 

88 

104 

94

90 

a40 

alO 

a!2 

alS

h!7 

a!4 

all 

f24 

f44

Dec.

f41 

a!2 

alO 

alO 

alO

fl!6 

418 

66 

h27 

h!9

h!4 

his 

h!4 

hll

h!2

hll 

128 

94 

104 

125

141 

144 

15S 

181 

1S9

155 

177 

222 

193 

169 

155

Jan.

78 

73 

64 

86 

116

131 

148 

141 

12S 

113

107 

99 

101 

125 

14S

134 

125 

125 

125 

122

125 

122 

122 

125 

138

205 

197 

169 

152 

144 

144

Feb.

131

m

f4S 

hSO 

hl8

h!7 

h84 

h!7 

h!7 

h!6

h80 

14 

13 

13 

12

12 

11

11 

11 

10

10 

11 

11 

15 

17

13 

11 

10

Month

Oct 

No\

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

VI

alendar year

rater year 1940-4

Mar.

10 

11 

10 

10 

10

10 

10

e

8

s 

s

8 

8 

8 

S

93 

304 

353 

392 

392

392 

320 

376 

42 

20

101 

158 

197 

254 

501 

404

Apr.

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1

Secondfoot-daya

5,287 

2,727 

3,144

-

3,929 

624 

4,434 

27, 286 

67, 205 

59,530 

26,540 

18,912 

14,789

234,407

381 

433 

39S 

375 

427

227 

269 

433 

561 

632

547 

445 

547 

514 

610

561 

575 

S13 

943 

,150

,520 

,550 

,500 

,590 

,660

,710 

,SOO 

,760 

,680 

,650

May

1,640 

1,590 

1,540 

1,290 

1,130

966 

S37 

805 

6 IS 

632

837 

1,230 

1,410 

2,060 

2,8SO

1,960 

2,150 

2,350 

2,520 

2,050

1,550 

1,690 

2,350 

3,400 

3,840

4,200 

5,330 

4,690 

3,620 

3,090 

2,950

Maximum

300 

166 

418

-

205 

131 

501 

1,800 

5,330 

3,960 

1,080 

749 

618

5,330

June

2,890 

2,440 

1,610 

1,640 

1,500

1,410 

2,200 

3,960 

3,840 

3,200

2,990 

2,800 

2,890 

3,090 

3,090

2,610 

2,040 

1,530 

1,740 

1,750

1,100 

939 

1,040 

1,030 

1,000

1,240 

1,210 

993 

904 

854

July

879 

879 

1,030 

l.OLO 

1,080

1,080 

1,070 

1,010 

957 

922

9)4 

939 

930 

913 

913

904 

870 

845 

821 

757

749 

749 

749 

725

701

709 

709 

693 

693 

678 

632

Aug.

618 

648 

655 

662 

678

670 

670 

701 

725 

733

725 

749 

655 

610 

655

670 

685 

733 

596 

603

670 

678 

670 

670 

589

386 

375 

364 

358 

353 

358

Minimum Mean

92 171 

10 90.9 

10 101

-

64 127 

10 22.3 

S 143 

227 910 

618 2, 168 

854 1,984 

632 856 

353 610 

409 493

8 642

Sept.

527 

618 

610 

596 

554

534 

520 

534 

527

514

514 

514 

501 

482 

482

475 

488 

463 

494 

432

469 

451 

433 

433 

433

415 

409 

427 

421 

469

Run- off In 

acre-feet

10,490 

5,410 

6,240

-

7,790 

1,240 

8,790 

54, 120 

133,300 

118, 100 

52, 640 

37,510 

29,330

465,000

a No gage-height record; discharge computed on basis of other Boise River records, 

f Computed on basis of partly estimated gage-height record, 

h Computed from staff-gage readings.
134 BOISE RIVER BASIN

Boise River at Notus, Idaho

Location.- Water-stage recorder, lat. 43°43', long. 116°48', in SEi sec. 34, T. 5 N., R. 4 

W., 360 yards upstream from steel highway bridge, a quarter of a mile southeast of 

Notus, and 7 miles northwest of Caldwell. Datum of gage is 2,288.55 feet above mean 

sea level (Corps of Engineers, U. S. Army datum Boise River Surveys).

Records available.- April 1920 to September 1941.

Average discharge.- 19 years (1920-22, 1924-41), 1,024 second-feet.

Extremes.- Maximum discharge during year, 4,330 second-feet May 28 (gage height, 5.70 feet); 

minimum, 16 second-feet July 10 (gage height, 0.08 foot).

1920-41: Maximum discharge observed, 14,500 second-feet May 19, 20, 1921; maximum 

gage height, 9.12 feet May 3, 1938; minimum discharge, 10 second-feet Aug. 18, 1920.

Remarks.- Records good. Station is below all large diversions for irrigation in Boise 

Valley; many diversions above. Flow regulated by Arrowrock Reservoir (see p. 133).

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

S 

3 

4 

5

6 

7 

8 

9 

10

11 

IS 

13 

14 

16

16 

17 

18 

19 

SO

21 

SS 

S3 

24 

25

26 

Z1 

SB 

29 

30 

31

Oct.

476 

480 

435 

408 

435

435 

358 

342 

334 

310

307 

286 

256 

241 

212

170 

205 

205 

192 

172

252 

458 

440 

494 

600

680 

746 

635 

620 

615 

615

Nov.

615 

686 

714 

702 

675

650 

640 

625 

625 

640

640 

620 

605 

595 

575

570 

570 

580 

550 

565

560 

550 

494 

480 

476

466 

462 

471 

484 

480

Dec.

484 

489 

466 

462 

448

444 

550 

714 

507 

458

440 

430 

412 

404 

404

5P9 

440 

507 

494 

507

530 

540 

555 

56C 

0/5

585 

570 

580 

610 

590 

570

Jan.

540 

466 

444 

466 

480

494 

512 

530 

516 

502

489 

484 

476 

507 

565

555 

540 

545 

545 

550

545 

545 

545 

555 

585

686 

670 

635 

600 

575 

565

Feb.

555 

550 

507 

466 

444

435 

476 

484 

458 

471

555 

595 

516 

498 

480

4P6 

458 

453

448 

440

435

435 

444 

462 

516

453 

435 

435

Month

00 1

No\ 

Dec

C

Jar 

Fet 

Mai 

Apr 

Maj 

Jur 

Jul 

Aug 

Ser

V

alendar year 19^

ater year 1940-4

Mar.

458 

444 

444 

426 

426

417 

408 

408 

399 

394

394 

386 

382 

386 

382

3 78 

430 

615 

680 

714

708 

719 

675 

627 

422

370 

374 

370 

374 

399 

560

Apr.

489 

480 

453 

430 

516

565 

354 

253 

283 

378

484 

382 

382 

350 

215

135 

104 

70 

56 

59

89 

190 

135 

84 

65

72 

148 

215 

198 

145

Secondfoot-days

12,414 

17,365 

15,724

293,040

IP, 712 

13,370 

14,569 

7,719 

33,381 

42,443 

1,065 

1,575 

4,396

180,733

May

143 

198 

360 

408 

378

322 

205 

168 

208 

78

56 

42 

36 

152 

1,780

1,200 

945 

1,220 

1,500 

1,250

560 

262 

340 

1,060 

2,230

2,440 

3,420 

4,080 

3,180 

2,580 

2,580

Maximum

746 

714 

714

5,980

68P 

595 

719 

565 

4,080 

4,160 

148 

64 

205

4,160

June

2,440 

2,370 

1,600 

1,230 

1,060

797 

1,300 

3,340 

4,160 

3,260

2,800 

2,440 

2,160 

2,300 

2,230

1,840 

1,290 

833 

890 

1,160

897 

570 

354 

175 

107

64 

89 

175 

253 

259

July

148 

78 

59 

48 

41

25 

25 

23 

21 

20

21 

21 

21 

23 

26

28 

31 

30 

27 

24

26 

25 

24

24

24 

28 

34 

36 

38 

39

Minimum

170 

462 

399

18

444 

435 

370 

56 

36 

64 

20 

29 

62

20

Aug.

38 

36 

35 

35

38

37 

33 

34 

34 

29

32 

36 

66 

55 

50

46 

44 

46 

79 

74

58 

51 

57 

55 

59

60 

69 

84 

82 

65 

58

* Mean

400 

579 

507

801

539 

478 

470 

257 

1,077 

1,415 

34.4 

50.8 

147

495

Sept.

62 

71 

127 

175 

190

162 

141 

133 

114 

112

104- 

102 

118 

133 

139

127 

133 

125 

114 

150

178 

205 

195 

180 

168

172 

188 

198 

200 

180

Run- off In 

acre-feet

24,620 

34,440 

31,190

581,200

33,150 

26,520 

28,900 

10,310 

66,210 

84,180 

2,110 

3,120 

8,720

358,500
BOISE RIVER BASIN 135

Diversions from Boise River, Idaho

Twenty-seven principal canals and several small farm laterals divert water from Boise 

River for Irrigation below mouth of Moore Creek and between gaging stations at Bowling 

Ranch and Notus. Records for years 1919-41 are available: record of dally diversions 

after 1915 on file In office of Idaho Commissioner of Reclamation.

Dally gage-height records obtained, frequent discharge measurements made, and records 

summarized under direction of W. E. Welsh, water-master for Boise River.

Total amount of water, in acre-feet, diverted by each canal during irrigation 

season of 1941

Canal Diversion

Main Canal of Bureau of Reclamation.............................. 595,450

Penitentiary..................................................... 1,570

Ridenbaugh....................................................... 159,480

Bub*).............................................................. 4,720

Consumers (Cruzen)............................................... 5,610

Boise City No. 1................................................. 10,000

Settlers......................................................... 46,170

Thurman Mill..................................................... 9,330

Farmers Union (includes Boise Valley diversion).................. 56,200

New Union (Little Union)......................................... 4,540

Hew Dry Creek (Dry Creek)........................................ 17,830

Ballantine....................................................... 3,220

Eagle Island canals (7).......................................... 12,220

Middleton Irrigation Association (Middleton Water Co.)........... 34,220

Middleton Mill ditch............................................. 14,440

Phyllis.......................................................... 104,050

Eureka No. 1..................................................... 9,260

Pioneer (Little Pioneer)......................................... 7,850

Canyon County.................................................... 20,140

Caldwell High Line...'............................................ 19,930

Riverside No. 2.................................................. 59,520

Farmers Cooperative.............................................. 78,090

Canyon (Campbell)................................................ 4,240

Seibenberg....................................................... 2,750

Pioneer Dixie.................................................... 11,960

Eureka No. 2..................................................... 14,630

Upper Center Point............................................... 3,730

Lower Center Point............................................... 4,850

Miscellaneous.................................................... 8,190

Total.......................................................... 1,324,190

Combined monthly discharge of canals diverting from Boise River, Idaho, duning 

irrigation season of 1941.

Dlscharg e in second-feet 

Maximum Minimum Mean

Run-off in 

acre-feet

April.....

May.......

June......

July......

August....

September.

5,234

5,791

5,308

4,064

3,373

2,847

1,737

3,549

3,651

3,074

2,646

1,510

3,194

5,045

4,482

3,750

3,059

2,329

The period.

190,000

310,200

266,700

230,600

188,100

138,600

1,324,200
136 BOISE RIVER BASIN 

Cottonwood Creek at Arrowrock Reservoir, Idaho

Location.- Water-stage recorder and broad-crested wooden control with trapezoidal notch

 for low stages, lat. 43°38', long. 115°49', in NWiNEi sec. 2, T. 3 N., R. 5 E., at 

flow line of Arrowrock Reservoir, Just downstream from unnamed tributary, threequarters of a mile downstream from Ranger Creek and Cottonwood ranger station, and . 

5k miles northeast of Arrowrock.

Drainage area.- 21.4 square miles.

'Hecords available.^ January 1939 to November 1941 (discontinued).

Extremes.- 154CC5I: Maximum discharge during water year, 29 second-feet May 3; maximum

 gage height, 3.15 feet May 27; minimum, 0.89 second-foot Aug. 7 (gage height, 2.11

feet).

1939-41: Maximum discharge, 96 second-feet Mar. 26, 1940 (gage height, 3.47 feet),

from rating curve extended above 60 second-feet; minimum, 0.21 second-foot Aug. 23,

1940 (gage height, 1.96 feet). 

Remarks.- Records good except those for periods of ice effect or missing gage-height

 record,which are fair. One small diversion above station for irrigation. Station 

is operated in connection with a study of silt movement in the Boise River Basin.

Discharge, In second-feet, 1940-41 

1940-41

Day

1

2

9

4

5

6

7

8

9

10

11

12

13

14

15

16

17

ISie

20

21

22

29

24

26

26

27

28

29

90

31

Dot.

2.2

2.9

3.2

2.5

2.2

2.0

1.9

1.8

1.7

1.8

1.8

1.8

l.S

1.8

1.8

1.8

l.S

l.S

l.S

l.S

1.8

1.9

1.9

2.2

4.6

3.4

3.0

2.7

3.0

3.4

4.0

Mov.

4.9

5.7

4.6

4.2

3.S

3.6

4.6

4.6

4.0

3.8

3.6

3.0

2.S

3.0

3.0

2.9

3.0

3.4

3.0

2.9

2.9

2.5

2.3

2.4

2.7

2.S

2.9

3.2

4.6

4.2

-

Dec.

3.S

3.6

3.6

3.6

3.6

3.S

3.6

3.5

3.5

2.8

1)2.5

2.2

2.2

2.2

2.1

2.2

2.9

3.5

3.4

3.2

3.6

4.4

5.2

5.2

4.9

4.6

7.0

5.7

5.2

4.9

a4.8

Jan.

4.6

4.2

4.4

4.6

4.4

4.2

4.2

4.0

3.S

3.8

3.S

3.8

3.8

4.9

4.2

4.0

4.0

4.0

4.2

4.2

4.2

4.2

4.4

4.9

6.0

7.0

6.3

6.0

6.0

5.7

5.7

Feb.

5.7

6.0

5.7

5.7

5.5

5.7

7.0

6.3

6.3

7.0

8.8

9.6

9.2

9.2

8.S

8.4

8.4

S.O

S.O

7.6

8.0

9.2

10

13

13

12

12

12

-

_

-

Mar.

14

15

14

13

13

12

12

12

12

12

12

11

10

9.6

9.6

9.6

11

12

12

11

12

12

12

12

13

13

14

15

16

16

16

Apr.

16

17

IS

17

20

20

17

17

IS

21

20

20

£0

20

20

IS

17

17

16

16

15

16

17

IS

18

20

19

19

20

21

May

21

IS

25

24

23

21

20

22

20

20

22

24

23

21

19

IS

IS

17

16

15

14

13

12ie

11

13

15

13

12

12

14

June

12

11

10

9.6

9.0

8.6

17

16

13

11

11

9.6

9.0

8.3

7.7

S.O

7.2

9.0

9.0

7.2

6.6

5.5

5.5

5.2

5.5

5.5

5.5

6.0

6.7

5.7

-

Jldy

5.7

5.2

4.6

4.4

4.2

3.8

3.4

2.1

2.4

2.3

2.4

2.7

2.7

2.2

1.9

l.S

2.0

2.0

l.S

1.6

' 1.5

1.4

1.3

1.4

1.4

1.4

l.S

2.0

2.0

1.8

1.8

Aug.

1.3

1.1

1.1

1.1

1.1

1.1

1.1

1.0

1.1

1.1

l.S

3.6

2.0

1.7

1.6

1.3

1.6

1.6

1.6

1.4

1.3 1 -5

l.fc

1*2

1.3

1.3

1.4

1.4

1.4

1.4

1.2

Sept.

1.3

1.4

1.5

1.5

1.7

1.7

1.7

1.7

l.S

1.7

l.S

1.9

1.9

1.9

1.9

1.9

1.9

l.S

l.S

1.9

1.9

1.9

l.S

1.9

1.9

1.9

1.9

1.9

1.9

1.9

-

a No gage-height record or gage reading not representative of mean for day; discharge Inter 

polated.

b Stage-discharge relation affected by Ice.

Note.- Stage-discharge relation affected by backwater fron Arrowrock Reservoir May 25 to June 23; 

discharge computed on the basis of readings on auxiliary staff gage 140 feet above gage house.

1941

Day

1

2

3

4

5

6

7

8

Oct.

2.0

2.0

2.0

2.3

2.8

3.0

2.S

2.9

Mov.

3.0

3.0

3.4

4.2

3.5

3.5

3.4

3.2

Day

9

10

11

12

13

14

15

16

Oct.

2.9

3.2

3.0

3.0

2.9

2.8

2.S

2.8

Nov.

3.2

3.0

.

-

-

-

-

-

Day

17

IS

19

20

21

22

23

24

Oct.

2.7

2.S

3.2

3.4

2.8

2.7

2.7

2.5

Nov.

_

-

-

-

-

-

-

~

Day

25

26

27

2S

29

30

31

Oct.

2.S

2.S

2.8

3.2

3.2

2.9

2.9

Nov.

_

-

-

-

-

-

-

Monthly discharge, in a«eond-f9«t, 1940-41

Month

May..........................

Augmat

Septertwr. ...................

S»eoodfoot-days

72.1 

104.9 

117.3

3,672.11

143.5 

236.1 

387. S 

548 

54S 

260.9 

77.0 

43.7 

53.6

2,592.9

86.6 

33.4

Maxim*

4.6

5.7 

7.0

SS

7.0 

13 

16 

21 

25 

17 

5.7 

3.6 

1.9

25

3.4 

4.2

HlBlaw

1.7 

2.3 

2.1

.25

3.S

5.5 

9.6 

15 

11 

5.2 

1.3 

1.0 

1.3

1.0

S.O 

3.0

Mean

2.33 

3.50 

3.7S

10.0

4.6S

S.43 

12.5 

18. 3 

17.7 

8.70 

2.4S 

1.41 

1.79

7.10

2.78 

3.94

Per 

square 

 lie

0.109 

.164 

.177

.467

.216 

.394 

.584 

.855 

.327 

.407 

.116 

.066 

.084

.332

U.iaO

.156

Hun-off

Inches

0.13 

.IS 

.20

6.40

.25 

.41 

.67 

.95 

.95 

.45 

.13 

.OS 

.06

4.49

u.io

.058

Aere-feet

143 

20S 

233

7,280

285 

460 

769 

1,090 

1,090 51" 

153 

87 

106

5,150

172 

66
BOISE RIVER BASIN 137

South Fork of Boise River near Lenox, Idaho

Location.- Water-stage recorder, lat. 43°30', long. 115°41', in sec. 24, T. 2 N. 7 R. 6 E., 

It miles upstream from Smith'Creek, 4 miles upstream from flow line of Arrowrock 

Reservoir, 4 milee west of discontinued Lenox post office, 13 miles upstream from 

mouth, and 17 miles upstream from Arrowrock Dam.

Drainage area.- 1,090 square miles.

Records available.- March 1911 to September 1941.

Average discharge.- 30 years, 947 second-feet.

Extremes.- Maximum discharge during year, 3,880 second-feet May 13 (gage height, 6.65 

feet); minimum daily, 180 second-feet (affected by ice) Dec. 12, 13.

1911-41: Maximum discharge, 9,200 second-feet May 15, 1917 (gage height, 9.53 

feet), from rating curve extended above 6,500 second-feet; minimum, 111 second-feet 

Aug. 10, 1934; minimum gage height, 1.68 feet Sept. 5-7, 1931.

Remarks.- Records good except those for period of ice effect, which are fair. Some water 

stored in Little Camas Reservoir and diverted for irrigation of about 5,000 acres of 

land in vicinity of Mountain Home.

Cooperation.- ope "RT Result of one discharge measurement furnished by water-master for Bolee

Discharge, in eeoond-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oot.

308 

372 

525 

471 

391

366 

334 

322 

315 

304

297 

293 

290 

290 

283

279 

279 

283 

272 

269

269 

269 

269 

263 

311

345 

352 

372 

360 

360 

360

Nov.

385

420 

462 

424

3S5

372 

399 

446 

416 

399

372 

348 

2S6 

2S6 

326

337 

346 

367 

379 

350

522 

337 

276 

279 

337

334 

, 30* 

319 

376 

441

Dec.

379 

366 

346 

348 

546

357 

341 

319 

311 

290

232 

W.80 

blSO 

b200 

b220

311 

387 

554 

471 

462

396 

383 

375 

585 

362

343 

360 

330 

295 

315 

319

Jan.

290 

279 

262 

350 

385

424 

399

363 

315 

304

286 

283 

290 

341 

341

319 

297 

297 

316 

319

511 

311 

315 

319 

330

362 

315 

269 

252 

269 

266

Month

Oot 

Kov 

Dec

C

Jan 

Fob 

Mar 

Apr 

May 

Jnn 

Jul 

Aug 

Sep

W

uary

ater year 1940-4

Feb.

286

311 

297 

501 

290

519 

385 

585 

375 

375

3S3 

591 

579 

348 

346

330 

508 

526 

345 

366

348

564 

405 

453 

463

599

372 

424

Secondfoot-days

10,035 

10,325 

10,401

299, 4S1

9,771 

10,060 

20,738 

37,150 

81,260 

55,357 

16,867 

11,760 

8,857

281,587

Mar.

eoe

663

654 

502 

493

502 

498 

516 

648 

56S

562 

562 

563 

516 

498

516 

562 

671 

754 

729

725 

729 

718 

702. 

718

772 

S57 

1,010 

1,110 

1,180 

1,110

Maximum

626 

462 

554

4,190

424 

466 

1,180 

2,170 

3,730 

2,590 

946 

1,010 

322

5,730

Apr.

1,110 

1,180 

1,210 

1,140 

1,240

1,140 

1,040 

1,010 

1,040 

1,240

1,280 

1,240 

1,210 

1,240 

1,280

1,280 

1,210 

1,110 

1,010 

977

946 

977 

1,040 

1,130 

1,240

1,320 

1,440 

1,700 

1,950 

2,170

May

2,270 

2,870 

2,380 

2,690 

2,590

2,580 

2,070 

2,070 

1,950 

1,880

2,070 

2,820 

5,750 

3,590 

3,060

2,700 

2,690 

2,690 

2,480 

2,270

2,170 

2,380 

2.S20 

3,180 

3,130

5,320 

3,590 

2,940 

2,590 

2,380 

2,330

TTlTVJTIltUTIl

269

276 

ISO

161

262 

2S6 

493 

946 

1,380 

977 

376 

266 

279

180

June

2,270 

2,070 

1,960 

2,170 

2,070

1,980 

2,270 

2,590 

2,380 

2,170

2,070 

2,170 

2,170 

2,170 

2,170

2,070 

1,880 

1,740 

1,330 

1,700

1,480 

1,400 

1,520 

1,240 

1,210

1,110 

1,040 

1,070 

1,070 

977

Mean

326 

561 

356

818

316 

359 

669 

1,254 

2,621 

1,796 

544 

579 

295

771

July

946 

886 

882

772 

746

708 

676 

651 

616 

687

662 

648 

554 

516 

498

484 

466 

464

446 

441

436 

412 

599 

587 

579

576 

416 

464 

449 

416 

3ST

Per 

square

mile

0.298 

.551 

.506

.760

.289 

.329 

.614 

1.15 

2.40 

1.66 

.499 

.348 

.271

.707

Aug.

578 

360 

394

519

3OB

28S 

269 

265 

269 

283

552

1,010 

621 

476 

416

387 

368 

441 

466 

399

379 

375 

572

?56 

J45

346 

341 

554 

311 

304 

301

Sept.

297 

28S 

501 

511 

588

aSIS 

aS06 

a296 

a288

279

285 

285 

504

501 

297

297 

297 

290 

285 

286

297 

295 

290 

293 

297

297 

297 

297 

290 

290

Run-off

Inches

0,34 

.57 

.36

10.21

.35 

.54 

.71 

1.26 

2.77 

1.84 

.63 

.40 

.50

9.60

Aore-feet

20,000 

21,470 

20,650

694,100

19,380 

19,960 

41,130 

75,650 

161,200 

106,800 

53,460 

25,350 

17,670

668,600

a No gage-height record] discharge interpolated, 

b Stage-discharge relation affeeted by ice.
138 BOISE RIVER BASIN 

Grouse Creek near Arrowrock, Idaho

Location.- Water-stage recorder and broad-crested wooden control with rectangular .flume

 for low flow, lat. 43°35', long. 115°55', in sec. 19, T. 3 N., R. 5 E., at Sanders 

Ranch, at flow line of Arrowrock Reservoir, just upstream from Little Grouse Creek and 

li miles southeast of Arrowrock.

Drainage area.- 8.0 square miles.

Records available.- January 1939 to Novenber 1941 (discontinued).

Extremes.- 1540=%!: Maximum discharge during water year, 29 second-feet Feb. 24 (gage

 height, 2.61 feet), from rating curve extended above 10 second-feet; minimum, 0.2

second-foot Aug. 10; minimum gage height, 1.09 feet Nov. 13.

1939-41: Maximum discharge recorded, about 89 second-feet Mar. 23, 1939 (gage

height, 2.66 feet), from rating curve extended above 23 second-feet by logarithmic

plotting; minimum, 0.15 second-foot Aug. 9, 1939; minimum gage height, 1.05 feet Aug.

18-21, 1940. 

Remarks.- Records good except those for discharges above 10 second-feet,which are fair.

 Ho~aTversions or regulation. Station operated in connection with a study of silt 

movement in the Boise River Basin.

Discharge, in second-feet, 1940-41 

1940-41

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

0.83

.96

.90

.83

.83

.77

.71

.71

.71

.71

.71

.71

.71

.71

.71

.77

.71

.71

.77

.77

.77

.77

.77

.90

2.0

1.3

1.2

1.0

1.3

1.4

1.4

Hov.

2.0

2.1

1.4

1.2

1.2

1.2

1.5

1.4

1.3

1.2

1.2

.83

.71

.77

.90

.90

.96

1.2

1.0

.96

1.0

.83

.77

.90

.90

.96

.96

1.4

2.2

1.7

Dee.

1.4

1.3

1.3

1.3

1.3

1.3

1.2

1.1

1.1

.77

b.70

b.60

b.50

b.45

.52

.60

.77

1.1

1.1

1.3

1.9

2.6

2.9

3.2

2.5

2.2

3.7

2.8

2.3

2.2

1.8

Jan.

0.88

.96

1.2

1.6

1.5

1.4 1.5-

1.4

1.3

1.3

1.3

1.2

1.3

2.5

2.0

1.7

1.7

1.7

1.8

l.S

1.9

1.9

2.0

2.3

5.9

6.1

4.2

3.6

3.3

3.0

2.8

Feb.

2.7

2.6

2.4

2.2

2.2

3.6

6.4

3.9

3.9

9.6

re

11

5.8

5.0

4.7

4.5

4.2

4.1

4.0

4.0

4.2

8.3

12

20

10

6.4

7.0

15

_

_

-

Mar.

20

15

11

9.3

8.9

6.4

5.2

5.2

5.2

5.0

4.5

4.1

3.8

3.5

3.5

3.5

3.7

4.0

3.9

3.7

3.5

3.5

3.4

3.1

3.0

2.9

2.8

2.8

3.4 s'.o

Apr.

3.2

3.4

3.9

3.8

5.5

4.5

4.0

3.7

3.7

5.5

5.0

5.0

4.5

4.5

4.7

4.2

4.0

3.8

3.6

3.5

3.3

3.2

3.1

2.9

2.8

2.7

2.6

2.5

2.4

2.3

-

May

2.5

2.4

3.2

2.7

2.7

2.4

2.4

2.8

2.3 2.0

1.9

cl.8

C2.0

1.9

1.7

1.6

1.6

1.6

1.5

1.3

1.3

1.2

1.1

1.2

1.3

2.2

1.7

1.4

1.3

1.5

1.6

June

1.3

1.2

1.3

1.2

1.1

2.1

5.5

3.7

2.7

2.2

1.9

1.7

1.7

1.6

1.4

1.4

1.3

1.6

1.9

1.4

1.2

1.0

.87

.87

.91

.87

.87

1.4

1.3

1.0

-

July

0.87

.82

.77

.69

.60

.56

.52

.52

.49

.49

.49

.49

.45

.45

.49

.49

.45

.45

.45

.42

.42

.42

.38

.42

.42

.60

.60

.64

.52

.45

.42

tag.

0.42

.38

.38

.35

.35

.32

.35

.35

.35

.32

1.1

.96

.56

.49

.45

.42

.42

.45

.49

.45

.49

.49

.49

.49

.56

.56

.56

.56

.52

.56

.56

Sept.

0.56

.60

.60

.64

.60

.64

.64

.69

.69

.69

.69

.77

.77

. 77

.77

.77

.73

.73

.77

.77

.77

.82

.73

.77

.77

.77

.77

.82

.77

.73

-

b Stage-discharge relation affected by ice.

c Stage-discharge relation affected by backwater from debris caused by fallen tree; discharge 

based on estimated effective gage Might.

1941

Day

1

2

3

4

5

6

7

8

Oct.

0.73

.77

.77

1.0

.37

.87

.82

.82

Hov.

0.96

1.1

1.3

1.5

1.1

1.1

1.0

1.0

Day

9

10

11

12

13

14

15

16

Oct.

.82

.82

.82

.82

.87

.82

.82

.82

Hov.

_

-

..

-

-

-

-

-

Day

17

18

19

20

21

22

23

24

Oct.

.82

.82

1.2

1.0

.95

.91

.91

.91

Nov.

-

-

-

-

-

-

-

~

Day

26

26

27

28

29

30

31

Oct.

1.0

.96

.96

1.2

.96

.96

Hov.

-

-

-

-

-

-

Monthly discharge, In second-feet, 1940-41

Month

May..........................

Seeondfoot-days

28.05 

35.55 

47.81

1,194.18

66.98 

185.7 

164.0 

111.8 

58.1 

48.49 

16.25 

15.20 

21.61

799.54

27.82 

9.06

Maximum

2.0 

2.2 

3.7

39

6.1 

20 

20 

S.5 

3.2 

5.5 

.87 

1.1 

.82

20

1.2 

1.5

Mittiimmi

0.71 

.71 

.45

.17

.82 

2.2 

2.8 

2.3 

1.1 

.87 

.38 

.32 

.56

.32

0.73 

.96

Mean

0.905 

1.18 

1.54

3.26

2.16 

6.63 

5.29 

3.73 

1.87 

1.62 

.524 

.490 

.720

2.19

0.897 

1.13

Per 

square 

mile

0.113 

.148 

.192

.408

.270 

.829 

.661 

.466 

.234 

.202 

.066 

.061 

.090

.274

0.112 

.141

Run-off

Inches

0.13 

.17 

.22

5.57

.31 

.86 

.76 

.52 

.27 

.23 

.08 

.07 

.10

3.73

0.13 

.04

Aore-feet

56 

71 

95

2,370

133 

368 

325 

222 

115 

96 

32 

30 

43

1,590

55 

18
BOISE RIVER BASIN 139

Little Camas canal at heading near Bennett, Idaho

Location.- Staff gage, lat. 43°21'30", long. 115°23', In sec. 9, T. IS., R. 9 E., 400 

reet downstream from Little Camas Reservoir, 4 miles northeast of Bennett, and 22 

miles northeast of Mountain Home.

Records available.- June to November 1917, April 1924 to September 1941.

Extremes.- Maximum discharge observed during year, 55 second-feet June 12-14 (gageneight, 2.03 feet); no flow prior to Apr. 8 and after July 23.

1917, 1924-41: Maximum discharge observed, 77 second-feet Apr. 27-30, May 1, 3, 9, 

1924; no flow during nonirrigation seasons.

Remarks.- Records good. Staff gage read once daily. Canal diverts from Little Camas 

Reservoir (South Fork of Boise River drainage) in sec. 9, T. IS., R. 9 E., and-discharges into Long Tom Creek Basin, where water is stored In Long Tom Reservoir for 

Irrigation of 5,000 acres of land near Mountain Home. No diversions above station. 

Flow regulated by head gates at Little Camas Reservoir.

Cooperation.- Gage-height record furnished by Mountain Home Irrigation District.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

5

6

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec.

-

Jan. Feb.

Month

Oct 

Noi 

Dec

C

Jar 

Pel 

Mai 

Api 

«a3 

Jur 

Jid 

Auj 

Sej

U

alendar year 194

y......................................

fater year 1940-4

liar. Apr.

0 

0 

0 

0 

0

0 

0 

a8 

13 

15

16 

15 

16 

19 

22

26 

35 

41 

44 

43

42 

43 

42 

42 

42

42 

42 

42 

42 

42

Secondroot-days

0 

0 

0

5,494

0 

0 

0 

734 

1,332 

1,563 

940 

0 

0

4,569

May

43 

42 

42 

43 

42

43 

42 

43 

43 

43

43 

43 

43 

43 

42

42 

42 

42 

42 

42

42 

42 

42. 

42 

42

42 

41 

44 

47 

49 

50

Maximum

0

0 

0

54

0 

0 

0 

44 

50 

55 

48 

0 

0

55

June

50 

51 

54 

53 

54

53 

53 

53 

53 

53

53 

54 

55 

55 

54

54 

54 

53 

52 

52

52 

52 

51 

50 

50

50 

50 

49 

48 

48

July

48 

47 

47 

46 

46

46 

46 

47 

46 

46

45 

44 

42 

42 

40

38 

38 

36 

36 

35

34 

29 

16 

0 

0

0 

0 

0 

0 

0 

0

Minimum

0 

0 

0

0

0 

0 

0 

0 

41 

48 

0 

0 

0

0

Aug.

Mean

0 

0

0

15.0

0 

0 

0 

24.5 

43.0 

52.1 

30.3 

0 

0

12.5

Sept.

*;

Run- off In 

acre-feet

0 

0 

0

10,890

0 

0 

0 

1,460 

2,640 

3,100 

1,860 

0 

' 0

9,060

a No gage-height record; discharge completed on basis of reported change In gate opening.

461677 O - 42 - 10
140 BOISE RIVER BASIN

Moore Creek above Granite Creek, near Idaho City, Idaho

Location.- Water-stage recorder, lat. 43°50', long. 115°47', in SEiSEi sec. 19, T. 6 N., 

R. 6 E., 1,000 feet upstream from Hoodoo Creek, five-eighths of a mile upetream from 

Granite Creek, and 2 3/8 miles northeast of Idaho City.

Drainage area.- 37.0 square miles.

Records available.- January 1939 to November 1941 (discontinued).

Extremes.- 1940=11: Maximum discharge during water year, 109 second-feet May 13 (gage 

neight, 2.56 feet); minimum, 1.5 second-feet Oct. 21, 22 (gage height, 1.10 feet).

1939-41: Maximum discharge, 261 second-feet Mar. 27, 1940 (gage height, 3.55 

feet), from rating curve extended above 200 second-feet; minimum, 0.8 second-foot 

July 34, 1940 (gage height, 1.05 feet).

Remarks.- Records good except those for periods of ice effect or no gage-height record, 

wnich are fair. Gold Hill Placer diversion takes water from creek for use in mining 

4 1/8 miles above station. Some of this water is used to supplement domestic supply 

of Idaho City. Return flow enters Moore Creek: through Elk Creek. Station operated 

in connection with a study of silt movement in the Boise River Basin.

Discharge, in second-feet, 1940-41 

1940-41

Day

1

K

a

4

6

6

7

8

9

10

11

12

13

14

.16

16

17

IS

19

SO

21

22

§3

24

25

26

27

28

29

30

31

Oct.

8.5

14

13

9.7

10

9.7

9.1

9.1

8.5

8.5

8.5

8.5

8.5

7.9

7.2

aa.3

e.2.2

a2.0

al.9

1.8

1.5

1.5

1.8

2.3

16

9.7

9.7

11

12

12

13

Nov.

15

22

19

15

13

13

17

18

18

16

15

12

12

13

13

12

13

13

12

12

12

9.1

9.7

12

12

11

t&

13

21

18

"

Dec.

15

14

14

15

15

17

16

15

15

9.1

9.1

bS.O

be.o

b9.0

tolO

toll

tola

b!2

to!2

to!2

12

14

15

14

13

12

15

13

12

12

12

Jan.

7.9

toS.O

toS.O

toS.O

to9.0

9.1

9.1

9.1

9.1

9.7

9.7

9.7

10

12

12

12

12

12

12

12

12

12

13

13

15

15

13

12

12

12

13

Fob.

13

13

13

16

14

16

17

16

16

16

19

20

18

18

18

17

17

17

17

17

17

22

25

31

28

24

23

26

-

-

-

Mar.

38

40

37

34

32

31

29

26

21

18

16

14

9.7

11

8.6

8.6

11

16

16

13

12

12

11

11

12

16

18

20

26

31

29

Apr.

31

34

34

31

35

31

29

25

31

29

29

34

35

35

43

34

27

24

20

19

18

19

26

29

33

36

40

47

54

61

-

May

64

58

75

75

71

63

57

55

52

53

64

82

96

87

70

59

54

50

44

40

40

44

50

55

60

73

70

60

46

46

53

June

48

43

40

38

35

34

52

53

44

39

35

32

31

27

2* ,

20

18

27

27

18

15

11

7.6

6.2

5.9

5.1

5.6

6.6

6.2

4.8

July

4.2

4.2

4.0

3.4

3.0

2.8

2.8

2.6

2.6

2.6

2.6

2.6

2.4

2.6

2.6

2.4

2.4

2.4

2.6

2.6

2.4

2.6

2.8

3.2

3.2

3.2

4.2

4.5

4.0

3.2

2.4

Aug.

2.4

2.6

3.0

2.4

2.4

2.1

2.1

2.1

2.1

2.1

3.2

6.9

5.6

5.1

5.1

5.1

12

11

3.4

2.6

2.4

2.1

2.1

2.1

2.1

2.1

2.1

2.4

2.4

2.4

2.4

Sept.

2.4

2.8

2.8

3.0

2.8

2.8

2.S

2.8

2.6

2.6

2.8

3.0

3.4

3.4

3.7

3.4

3.2

3.4

3.7

3.7

4.0

4.2

4.5

4.5

4.8

5.1

5.9

7.6

8.0

7.6

-

a Ho gage-height record; discharge computed on basis of two discharge measurements, records for 

Gold Hill placer diversion and other stations on Moore Creek, 

b Stage-discharge relation affected by ice.

1941

[Day

1 

2 

3 

4 

5 

6 

7 

8

Oct.

8.6 

8.0 

6.2 

6.6 

7.2 

5.6 

5.4 

5.1

Nov.

10 

10 

12 

23 

16 

13 

12 

12

Day

9 

10 

11 

12 

13 

14 

15 

16

Oct.

5.1 

7.6 

9.4 

9.4 

8.6 

8.6

I*

5ov.

11 

11

Day

17 

18 

19 

20 

21 

22 

23 

24

Oct.

8.3 

8.3 

9.7 

9.4 

9.0 

8.6 

9.0 

9.0

Nov.

:

Day

25 

26 

27 

28 

29 

30 

31

Oct.

9.. 4 

9.0 

9.4 

9.7 

9.4 

9.4 

9.7

Nov.

:

Monthly discharge, in second-feet, 1940-41

Month

May. ......................................

Secondfoot-days

241.4 

422.8 

392.2

10,901.7

342.4 

524 

627.9 

973 

1,868 

759.0 

93.1 

107.9 

117.3

6,469.0

255.6 

130

Maximum

16 

22

17

218

15 

31 

40 

61 

96 

53 

4.5 

12 

8.0

96

9.7 

23

Minimum

1.5 

9.1 

8.0

1.1

7.9 

13 

8.6 

18 

40 

4.8 

2.4 

2.1 

2.4

1.5

5.1 

10

Mean

7.79 

14.1 

12.7

29.8

11.0 

18.7 

20.3 

32.4 

60.3 

25.3 

3.00 

3.48 

3.91

17.7

8.25 

13.0

Run-off in 

acre-feet

479 

839 

778

21,630

679 

1,040 

1,250 

1,930 

3,710 

1,510 

186 

214 

233

12,860

507 

258
BOISE RIVER BASIN 141

Moore Creek above Thorn Creek, near Idaho City, Idaho

Location.- Water-stage recorder and broad-crested concrete-block control, lat. 43°46',

 ioBg. 115"55', In IWiNWi sec. 18, T. 5 N., R. 5 E., If miles upstream from Thorn Creek

and 5i miles southwest of Idaho City. 

Drainage area.- 119 square miles.

Records available.- January 1939 to November 1941 (discontinued). 

Extremes.- 1540-41; Maximum discharge during water year, 226 second-feet May 13 (gage

 height", 2.77 feet); minimum recorded, 13 second-feet Sept. 20 (gage height, 1.38 feet). 

1939-41: Maximum discharge, 725 second-feet Mar. 27, 1940 (gage height, 4.38 feet); 

minimum, 4.4 second-feet Aug. 30, 1939 (gage height, 1.18 feet). 

Remarks.- Records good except those for periods of ice effect, which are fair. Many diver-

 sions above station for placer mining. A small ditch diverts water from Thorn Creek 

into Pine Creek for mining use. Flow slightly regulated by passage through dredged 

areas near Idaho City. Station operated In connection with a study of silt movement 

in Boise River Basin.

Discharge, In second-feet, 1940-41 

1940-41

Day

1

8

t

4

6

6

1

9

10

11

12

13

14

16

16

17 

IS

19

20

21

22

23

24

26

26

27

28

e»

So

31

Dot.

19

26

32

23

25

20

19

17

17

16

17

19

17

15

15

16

16 

15

a!5

a!5

a!5

15

IS

19

33

32

27

26

25

26

32

Hov.

40

51

53

46

37

34

36

44

43

33

34

23

22

21

26

26

23 

30

26

23

24

26

28

29

24

22

24

25

40

46

1*0.

37

33

32

31

30

31

30

29

29

28

b25

b20

b!5

b!5

b20

b25

b30 

b35

b35

b35

b40

b40

42

46

42

38

50

46

36

 35

32

Jan.

' b25

 (»)

1

> b27

J

27

27

27

27

27

27

31

34

32

31

32

33

34

P»b.

33

32

30

31

32

33

37

37

35

 36

46

59

54

47

46

33

41 

39

09

41

43

58

70

90

90

74

68

71

_

*

Mar.

98

119

110

 100

96

96

88

87

87

36

 82

78

75

67

68

67

70 

84

83

92

S3

81

32

82

82

36

90

93

107

121

121

Apr.

117

130

141

136

161

151

138

126

123

147

155

153

155

149

151

141

132 

121

110

102

98

100

105

110

114

121

126

136

143

149

~

May

161

155

169

190

188

173

155

153

141

139

149

171

212

201

180

155

143 

130

123

117

110

110

119

128

136

147

165

141

123

123

143

June

139

124

115

103

105

102

139

163

143

124

115

107

103

100

93

90

86 

95

110

93

81

78

67

64

63

61

60

64

64

59

~

July

55

51

49

45

40

33

35

34

32

30

31

31

31

30

30

30

29 

27

27

23

22

21

19

19

19

20

23

25

25

23

20

AUK*

19

IS

17

16

15

14

14

14

15

16

21

46

33

26

21

IS

19 

47

39

29

26

23

22

21

20

21

IS

16

18

19

IS

Sept.

18

19

21

20

20

19

IS

19

18

18

IS

19

20

SO }

20

20

20 

19

19

16

IS

17

18

17

IS

IS

18

18

19

18

* Winter discharge jneasMrenent made on tnls day. 

a No gage-height record; discharge Interpolated, 

b Stage-discharge relation affected by Ice.

1941

Day

2 

3 

4 

5 

6 

7 

8

Oct.

19 

21 

20 

20 

24 

26 

a24 

a23

NOT.

25 

24 

20 

33 

35 

30 

27 

25

Day

9

10 

11 

12 

13 

14 

15 

16

Oct.

a22 

a22 

a22 

a22 

22 

22 

21 

21

NOT.

25 

23

Day

17 

18 

19 

20 

21 

22 

23 

24

Oct.

21 

21 

23 

26 

24 

22 

18 

18

NOT.

1

Day

25 

26 

27 

28 

29 

30 

31

Oct.

. 20 

21 

21 

23 

23 

23 

23

HOT.

1

a No gage-height record; 

 tat Ions.

discharge computed on basis of weather records and records for nearby 

Monthly discharge, In second-feet, 1940-41

December. ....................

Hay..........................

Seeondfoot-days

1,012

27,242

£ V76

~Z5*7o

560

272

38

50

629

21

38

15

4.9

16

is

20

32.6

74.4

18.7

27.2

Per

mile

.P74

.625

!l57

0 184

.229

Ru

Inches

.32

8.51

.18

.09

n-off

Acre-feet

2,010

54,030

1,110

540
142 BOISE RIVER BASIN

Moore Creek near Arrowrock, Idaho

Location.- Staff gage, lat. 43°35', long. 115°59', in sec. 21, T. 3 N., R. 4 E., at bridge 

on Bolse-Arrowrock highway, a quarter of a mile upstream from mouth and 3 miles southwest of Arrowrock.

Drainage area.- 426 square miles.

Records available.- October 1914 to November 1915 (discharge measurements only), December 

1915 to September 1941.

Average discharge.- 25 years (1916-41), 283 second-feet.

Extremes.- Maximum discharge observed during year, 838 second-feet Apr. 5 (gage height, 

2.82 feet); minimum observed, 20 second-feet Dec. 16; minimum gage height observed, 

0.30 foot Aug. 8.

1915-41: Maximum discharge observed, 4,550 second-feet Apr. 19, 1936; maximum gage 

height observed, 6.3 feet (datum then in use) Apr. 11, 1916; minimum discharge observed, 

7.9 second-feet Aug. 13-15, 17, 18, 1924; minimum gage-height observed, 0.09 foot Aug. 

28, 29, Sept. 1, 1939.

Remarks.- Records fair. Gage read once dally. No large diversions above station.

Cooperation.- Gage-height record furnished by Board of Control for Boise project, 

of four discharge measurements furnished by water-master for Boise River.

Results

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7

e

9

10

11

12 

15 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26

27 

28 

29 

30 

51

Oct.

56 

65 

82 

85 

70

60 

53 

53 

51 

48

48 

48 

49 

48 

47

46 

48 

47 

45 

42

45 

45 

46 

47 

101

156 

105 

87 

83 

87 

103

Nov.

127 

156 

222 

167 

129

111 

109 

156 

156 

140

115 

99 

68 

52 

60

62 

75 

87 

82 

53

56 

54 

41 

35 

64

60 

51 

64 

111 

222

Dec.

156 

127 

115 

103 

109

109 

103 

90 

96 

83

48 

39 

35 

25 

21

20 

46 

65 

111 

142

167 

180 

222 

2B9 

238

193 

208 

254 

193 

180 

156

Jan.

98 

60 

54 

85 

107

117 

129 

109 

92 

85

65 

59 

71 

117 

129

119 

111 

117 

127 

134

134 

127 

125 

121 

129

222 

180 

144 

115 

99 

111

Month

Dot 

NOT 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

W

u

ater year 1940-43

Feb.

117 

138 

131 

101 

94

98 

156 

167 

156 

156

e220 

eSOO 

e250 

e210 

e!90

e!70 

e!60 

e!70 

e!70 

e!70

al80 

e210 

e260 

e390 

6400

6310 

272 

272

Secondfoot-days

2,001 

2,982 

3,923

97,214

3,492 

5,618 

12,020 

15,561 

15,121 

9,438 

2,707 

1,820 

1,632

76,315

Mar.

538 

550 

432 

388 

347

367 

367 

388 

410 

388

567 

347 

327 

303 

289

2B9 

327 

410 

410 

388

388 

367 

347 

367 

367

367 

410 

410 

432 

578 

500

Maximum

156 

222 

289

3,090

222 

400 

578 

838 

635 

635 

180 

136 

62

858

Apr.

478 

550 

578 

550 

838

635 

578 

500 

478 

605

665 

578 

578 

578 

578

576 

525 

500 

455 

410

386 

388 

388 

410 

452

500 

455 

455 

455 

455

May

478 

500 

550 

605 

578

578 

500 

550 

500 

455

455 

500 

655 

605 

605

500 

478 

455 

452 

388

388 

388 

367 

410 

478

432 

578 

478 

410 

367 

478

Minimum

42 

35 

20

14

54 

94 

289 

388 

367 

180 

48 

34 

51

20

June

478 

388 

347 

567 

327

308 

500 

635 

478 

388

367 

327 

327 

SOS 

308

272 

254 

254 

388 

347

272 

208 

180 

193 

193

1S3 

193 

208 

222 

208

Mean

64.5 

99.4 

127

266

113 

201 

388 

519 

488 

315 

87.3 

58.7 

54.4

209

July

180 

156 

142 

136 

121

115 

113 

98 

90 

85

83 

90 

89 

85 

87

92 

87 

80 

75 

68

65 

62 

58 

54 

52

48 

53 

62 

65 

60 

56

Per 

square 

mile

0.151 

.233 

.298

.624

.265 

.472 

.911 

1.22 

1.15 

.759 

.205 

.138 

.128

.491

Aug.

52 

49 

47 

41 

41

38 

36 

34 

56 

35

39 

113 

98 

73 

54

48 

41 

136 

117 

85

68 

65 

56 

48 

54

54 

54 

52 

52 

53 

51

Sept.

51 

51 

54 

68 

54

58 

54 

52 

62 

56

55 

54 

62 

56 

59

59 

56 

56 

56

55

51 

51 

51 

53 

53

54 

53 

53 

56 

53

Run-off

Inches

0.17 

.26 

.34

8.51

.31 

.49 

1.05 

1.36 

1.33 

.82 

.24 

.16 

.14

6.67

Acre-feet

3,970 

5,910 

7,780

192,800

6,930 

11,140 

23,840 

30,860 

29,990 

18,720 

5,370 

3,610 

3,240

151,400

e Stage-discharge relation Indefinite; discharge conputed on basis of records for Moore Creek 

above Thorn Creek near Idaho City, "Boise River at Bowling Ranch near Arrowrock, and New York canal.
BOISE RIVER BASIN 

Gold Hill placer diversion from Moore Creek near Idaho City, Idaho

143

Location.- Water-stage recorder, lat. 43°53', long. 115°44', In sec. 3, T. 6 N., R. 6 E., 

just downstream from highway bridge, 760 feet downstream from headgates, and 6 miles 

northeast of Idaho City. Prior to Feb. 25, 1941, staff gage at same site and datum.

Records available.- April 1939 to November 1941 (discontinued).

Elxtremes.- 1940-41: Maximum discharge during water year, 44 second-feet Aug. 17 (gage 

height, 1.72 feet), from rating curve extended above 30 second-feet; no flow Oct. 

1-14, Oct. 29 to Mar. 6.

1939-41: Maximum discharge, that of Aug. 17, 1941; no flow at times during each 

year.

Remarks.- Records good except those for periods of no gage-height record or periods 

when part of flow was returning to Moore Creek, which are fair. Staff gage read 

once dally In October. Canal diverts from right bank of Moore Creek In sec. 3, T. 6 

N., R. 6 E., for placer mining and to supplement domestic supply of Idaho City. Water 

normally returns to Moore Creek through Elk Creek. Station operated In connection 

with a study of silt movement In the Boise River Basin.

Discharge, in second-feet, 1940-41

D»T

i

z

3

4

5

6

7

e

9

10

1112

13

14

15

16

17

18

19

20

21

28

23

24

26

26

27

28

29

SO

31

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

al.O

6.1

a6.2

a6.4

6.5

6.5

a6.9

6.9

6.9

a6.9

4.2

3.9

a3.9

a2.0

0

0

0

Mar.

0

0

0

0

0

0

3.5

7.9

11

13

16

IS

19

16

IS

21

24

25

26

26

26

$6

SB

25

27

26

2S

27

27

24

25

Apr.

25

25

24

24

27

27

26

27

621

29

29

29

30

30

e23

29

2S

27

26

25

25

27

626

28

29

29

29

29

23

2S

-

*«T

2S

2S

29

2S

626

25

29

29

29

30

30

30

28

26

27

26

26

27

27

2S

29

29

29

2S

28

29

25

e23

27

2S

2S

June

28

27

26

27

26

27

29

2S

2S

27

27

27

27

27

2S

28

2S

27

25

27

27

29

31

32

32

31

34

35

32

29

-

July

27

26

24

22

20

18

IS

17

16

16

16

15

15

14

14

13

13

13

12

12

11

10

9 3

9 3

9 1

S 9

5 9

11

11

10

9.S

Aug.

9.6

8.9

S.4

9.5

9.6

9.6

9.3

9.6

10

9.6

15

16

12

11

10

10

13

15

15

al4

al4

a!3

a!2

a!2

11

11

10

10

9.5

9.6

9.1

Sept.

9.3

11

10

9.5

9.5

9.3

9.3

9.3

9.1

8.6

tf.3

10

9.6

a9.7

9.S

5.9

5.1

7.9

e7.5

e7.5

e7.0

e7.0

e6.6

e6.5

e6.0-

e6.0

e5.0

e3.5

e4.0

e3.5

~

Oct.

e2.5

e3.0

e5.0

e4.5

e5.0

e6.5

66.6

e6.0

e5.0

e2.6

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

HOY.

0

0

0

0

0

0

0

0

0

0

.

-

-

-

-

.

-

-

-

-

_

 »

-

-

_

-

«

-

-

~

Monthly discharge, in second-feet, 1940-41

Month

May.......................................

Water year 1940-41 .....................

Seoondfoot-daya

2,355.6

4,164.4

0

Maximum

28

35

0

Minimum

0

21

0

0

Mean

6.44

26 9

11.4

0

Run-off in 

acre-feet

4,680

8,260

0
144 BOISE RIVER BASIN

Granite Creek near Idaho City, Idaho

Location.- Water-stage recorder and broad-crested wooden control, lat. 43°49'30", long.

lib"*'/'00", three-eighths of a mile upstream from mouth and 2t miles east of Idaho

City.

Drainage area.- 4.8 square miles.

Records available.- January 1939 to November 1941 (discontinued). 

Extremes.- 194U-41: Maximum discharge during water year, 5.7 second-feet Mar. 1 (gage

neignt, 2.66 feet); minimum, 0.18 second-foot Nov. 12.

19?9-41: Maximum discharge, 21 second-feet Mar. 27, 1940 (gage height, 2.70 feet),

from rating curve extended above 12 second-feet; minimum, that of Nov. 12, 1940. 

Remarks.- Records good except those for periods of ice effect, which are fair. No dlversion or regulation. Station operated in connection with a study of silt movement in

the Boise River Basin.

Discharge, In second-feet, 1940-41 

1940-41

D*y

i

e

s

4

6

6

7

8

9

10

11

IS

13

14

16

16

17

18

19

20

21

82

23

84

25

26

27

28

29

SO

31

Oct.

0.63

.91

.77

.65

.59

.57

.55

.55

.55

.55

.55

.55

.55

.55

.55

.55

.55

.55

.55

.55

.57

.59

.59

.83

1.3

.79

.79

.75

.77

.87

1.1

Nov.

1.2

1.8

1.2

1.0

.94

.91

*1.1

1.1

1.0

.94

.89

.51

.65

to. 75

b.BO

.82

.87

.87

.67

b.65

b.60

b.60

to. 60

to. 70

.77

*.75

.75

.96

1.5

1.1

-

E»o.

0.99

.94

.94

.91

.94

.94

.89

.91

.79

to. 70

b.60

to. 55

to. 50

b.50

b.50

b.60

.75

.96

.91

.99

.99

1.3

 1.5

1.2

1.1

.99

1.3

1.0

.99

.96

.91

J«n.

0.87

.82

.82

.82

.82

.82

.82

.82

.79

.82

.82

.79

*.79

.89

.84

.87

.84

.89

.89

.89

.89

.89

.89

.91

.91

.94

.91

.91

.89

.87

.87

Feb.

OJDL

.87

*.87

.87

.87

.94

1.1

.99

.99

1.0

1.6

1.7

1.4

1.4

1.2

bl.2

1.2

1.2

1.2

1.2

1.4

2.2

2.3

 2.8

2.2

1.8

1.8

2.6

-

_

-

Mar.

4.0

3.7

3.0

3.0

3.2

2.9

2.8

2.8

2.7

2.8

2.5

2.3

2.2

2.0

2.1

2.3

2.5

2.6

2.6

2.6

2.6

2.5

2.5

2.4

2.4

2.4

2.4

2.5

2.7

2.8

2.7

Apr.

2.7

2.8

5.2

3.2

4.2

3.7

3.5

3.4

3.4

4.0

.2

.2

.2

.1

.0

3.8

3.6

3.4

3.2

3.1

3.0

2.9

2.8

2.9

2.8

2.8

2.8

2.9

3.0

3.0

May

3.1

3.0

3.4

3.3

3.2

3.0

2.9

3.0

2.7

2.7

2.7

3.0

3.1

3.0

2.6

2.4

2.2

2.1

1.9

1.8

1.7

1.6

1.6

1.6

1.6

2.1

1.8

1.5

1.4

1.7

1.7

June

1.4

1.3

1.3

1.2

1.2

1.2

2.8

2.5

2.1

1.8

1.7

1.5

1.4

1.4

1.3

1.3

1.3

1.7

1.7

1.3

1.2

1.0

.99

.99

.96

.94

.96

1.1

1.0

.94

-

July

0.89

.84

.80

.76

.71

.67

.64

.60

.58

.58

.58

.56

.54

.71

.58

.54

.49

.81

.49

.44

.43

.40

.40

.40

.40

.48

.52

.60

.48

.43

.41

Aug.

 0.41

.37

.36

.36

.36

.34

.33

.37

.38

.37

U2

.82

.54

.44

.43

.43

.49

.67

.52

.49

.46

.44

.43

.46

.49

.46

.43

.46

.46

.46

.44

Sept.

0.44

.68

.61

.49

.46

.44

.46

.48

.48

.46

.61

.56

.52

.52

.56

.51

.48

.46

.49

.51

.51

.51

.49

.61

.51

.52

.52

.54

.54

.54

-

* Winter discharge measurement nude on this day. 

b Stage-discharge relation affected by Ice.

Day

1

2

3

4

5

6

7

8

Oct.

0.58

.54

.53

.71

.80

.67

.65

.64

HOT.

0.71

.71

.91

.94

.75

.73

.73

.71

Day

9

10

13

14

15

16

Oct.

0.62

.64

.62

.60

.60

.60

.58

HOY.

0.71

.69

_

_

_

_

_

-

Day

17

18

19

20

21

22

23

24

Oct.

0.62

.60

.78

.69

.65

.64

.65

HOY.

-

-

-

-

-

-

-

-

Day

25

26

27

SB

29

30

31

Oct.

0.71

.67

.75

.71

.67

.71

Nov.

-

-

-

-

-

-

-

Monthly discharge, In second-feet, 1940-41

Month

May. .........................

Seoondfoot-days

20.82 

27.00 

27.85

587.55

26.61 

39.77 

82.5 

100.8 

73.4 

41.48 

17.45 

14.67 

15.05

487.40

20.22 

7.59

MaxiKum

1.3 

1.8 

1.3

12

.94 

2.S 

4.0 

4.2 

3.4 

2.8 

.89 

1.2 

.56

4.2

0.80 

.94

M^<1»1Y.

0.55 

.51 

.50

.23

.79 

.37 

2.0 

2.7 

1.4 

.94 

.40 

.33 

.44

.33

0.54 

.69

Mean

0.672 

.900 

.693

1.61

.858 

1.42 

2.66 

3.36 

2.37 

1.38 

.563 

.473 

.502

1.34

0.652 

.759

Pep 

square 

mile

0.140 

.188 

.187

.335

.179 

.296 

.554 

.700 

.494 

.288 

.117 

.099 

.105

.879

0.136 

.158

Run-off

Inches

0.16 

.21 

.22

4.57

.21 

.31 

.64 

.78 

.57 

.32 

.13 

.11 

.12

3.78

0.16 

.06

Aore-feet

41 

54 

55

1,170

53

79 

164 

200 

146 

82 

35 

29 

30

968

40 

16
BOISE RIVER BASIN 145

Bannock Creek near Idaho City, Idaho

Location.- Water-stage recorder and broad-crested wooden control with V-notch for low 

 stages, lat. 43°48'30", long. 115°46'30", In SEiSWi sec. 32, T. 6 N., R. 6 E., threequarters of a mile upstream from South Fork, 2i miles upstream from mouth, and 3 1/8 

miles southeast of Idaho City.

Drainage area.- 4.5 square miles.

Records available.- January 1939 to November 1941 (discontinued).

Extremes.- 1940-41: Maximum discharge during water year, 4.7 second-feet Apr. 4; maximum 

gage height, 1.09 feet Dec. 15 (ice effect); minimum discharge, 0.23 second-foot Aug. 7.

1939-41: Maximum discharge, 23 secondrfeet Mar. 26, 1940 (gage height, 1.68 feet), 

from rating curve extended above 10 second-feet; minimum, 0.07 second-foot Aug. 23, 

1940 (gage height, 0.21 foot).

Remarks.- Records good except those for Nov. 21-25 and Mar. 10-15 which are fair and those 

for Dec. 12-16, which are poor. One small diversion above station by Intermountaln 

Range and Experiment Station. Station operated in connection with a study of silt 

movement In the Boise River Basin.

Discharge, In second-feet, 1940-41 

1940-41

»«y

i

2

8

4

6

6

1

8

9

10

11

12

IS

14

15

16

17

18

19

80

21

22

23

24

SB

26

27

28

29

SO

SI

Oct.

0.50

.74

.64

.62

.60

.47

.44

.44

.44

.44

.44

.44

.44

.44

.44

.44

.44

.44

.44

.44

.44

.44

.44

.68

1.1

.64

.58

.65

.55

.64

.78

MOT.

0.03

1.3

.89

.78

.71

.68

.86

.86

.74

.68

.61

.65

.65

.56

.65

.58

.61

.68

*.55

.55

b.50

b.50

b.60

b.50

b.60

.62

.65

.68

.98

.71

-

D«0.

0.64

.64

.64

.64

.68

.68

.64

.61

.68

.60

.62

b.45

b.40

b.36

b.40

b.60

.71

.68

.68

.64

.64

.71

».71

.74

.64

.61

.74

.64

.61

.61

.61

Jan.

0.68

.68

.68

.61

.61

.61

.61

.61

.68

.68

.58

.68

.58

.61

.61

.58

.58

.68

.68

.61

.61

.61

.61

.61

.61

.61

*.68

.58

.58

.58

.68

Feb.

0.68

.68

.58

.58

.68

.68

.71

.68

.68

.68

.86

.86

.71

.68

.68

.68

.64

.64

.68

.68

.71

.86

.89

».9S

.85

.85

.78

1.2

_

-

tar.

1.6

1.5

1.3

1.2

1.2

1.2

1.2

1.2

1.2

*bl.2

bl.2

bl.l

bl.o

bl.O

bl.l

1.2

1.4

1.5

1.6

1.6

1.7

1.7

1.7

1.7

1.7

1.7

2.0

2.3

2.7

2.8

2.7

Apr.

2.8

3.0

3.4

3.5

4.1

3.7

3.4

3.2

3.2

3.9

3.9

4.0

3.9

3.9

3.7

3.6

3.4

3.5

3.0

2.8

2.8

2.7

2.8

2.8

2.9

2.9

3.0

3.1

3.1

3.2

-

*«y

3.5

3.4

4.0

4.0

4.2

4.0

3.9

4.0

3.7

3.6

3.6

3.7

3.7

3.7

3.4

3.2

2.9

2.6

2.4

2.3

2.2

2.0

2.0

2.0

1.9

2.2

1.9

1.7

1.6

1.9

1.9

June

1.7

1.5

1.4

1.4

1.3

1.3

2.5

2.6

2.2

1.9

1.7

1.7

1.6

1.6

1.4

1.4

1.6

1.8

l.S

1.5

1.3

1.2

1.2

1.2

1.1

1.1

1.1

1.1

1.1

1.0

-

July

0.98

.89

.85

.85

.78

.78

.74

.71

.68

.64

.61

.68

.68

.61

.55

.56

,68

.60

.60

.44

.44

.44

,42

.59

.59

.47

.62

.61

.47

.42

.39

Aug.

0.57

.54

.54

.34

.32

.30

.SO

,50

,52

.32

1.1

.74

.47

.42

.37

.37

.42

.65

.47

.42

.39

.37

.87

.67

.39

.59

.87

.57

.37

.57

.34

Sept.

0.34

.39

.89

.59

.87

.57

.57

.89

.87

.37

.89

.44

.42

.99

.42

.42

.87

.37

.87

.89

.39

.89

.80

.89

.87

.39

.42

.42

.42

.39

-

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by lea.

Day

1

2

3

4

5

6

7

8

0

10

Oct.

0.42

.42

.39

.60

.68

.62

.50

.47

.47

.44

MOT.

0.52

.52

.68

.71

.55

.55

.52

.62

_

_

Day

11

12

13

14

15

16

17

IS

19

20

Oct.

0.44

.44

.44

.44

.42

.42

.42

.44

.61

.55

MOT.

_

_

_

_

-

_

_

_

_

_

Day

21

22

23

24

25

26

27

28

29

30

31

Oct.

0.60

.47

.47

.50

.52

.52

.52

.58

.56

.62

.62

NOT.

_

-

-

_

_

-

-
146 BOISE RIVER BASIN

Monthly discharge, in second-feet, of Bannock Creek near Idaho City, Idaho, 1940-41

Month

May. .........................

July. ........... ............

Secondfoot-days

16.37 

20.13 

18.84

484.31

18.40 

20.43 

48.2 

99.0 

91.0 

45.1 

18.36 

12.68 

11.70

420.21

15.0 

4.57

»«__

1.1 

1.3 

.74

11

.61 

1.8 

2.8 

4.1 

4.8 

2.5 

.98 

1.1 

.44

4.2

.61 

.71

ffi IT* J ^flpti

0.44 

.50 

.35

.12

.58 

.58 

1.0 

2.7 

1.6 

1.0 

.39 

.30 

.34

.30

.39 

.52

Mean

0.52S 

.671 

.608

1.38

.594 

.730 

1.55 

3.30 

2,94 

1.50 

.598 

.409 

.390

1.15

.484 

.571

Per 

square 

mile

0.117 

.149 

.135

.893

.132 

.168 

.344 

.733 

.653 

.333 

.132 

.091 

.087

.256

.108 

.127

Run-off

Inches

0.13 

.17 

.16

4.01

.15 

.17 

.40 

.82 

.75 

.37 

.15 

.10 

.10

3.47

.12 

.04

Aore-feet

32 

40

37

960

36 

41 

96 

196 

180 

89 

36 

85 

83

831

30 

9J

Pine Creek above Barry Placer diversion, near Idaho City, Idaho

Location.- Water-stage recorder and broad-crested wooden control with rectangular flume 

ror low Stages, lat. 43048'30n , long. 115°48'00n , In NWiNEi sec. 1, T. 5 N., R. 5 E., 

100 feet upstream from headgate of Barry Placer ditch, l£ miles upstream from mouth, 

1 7/8 miles downstream from Davls Placer diversion, and 2 miles southeast of Idaho 

City.

Drainage area.- 6.1 square miles.

Records available.- February 1940 to November 1941 (discontinued).

Extremes.- 1940-41: Maximum discharge during water year, 7.1 second-feet May 8 (gage 

neignt, 3.92 feet); minimum, 0.05 second-foot at times July 21-25, Aug. 4-6.

1940-41: Maximum discharge, 29 second-feet Mar. 27, 1940 (gage height, 4.54 feet); 

no flow July 22, 23, Aug. 3, 4, 8, 9, 1940.

Remarks.- Records good except those for periods of Ice effect, which are fair. Water la 

diverted from left bank of Pine Creek In SEi sec. 12, T. 5 _N., R. 5 E., 1 7/8 miles 

above station, for Davls Placer; records of this diversion obtained In SWi sec. 1, 

T. 5 N., R. 5 E. Water Is diverted from right bank of Thorn Creek In NW£ sec. 21, T. 

5 N., R. 6 E., Into Pine Creek above Davls Placer diversion; records of this diversion 

are obtained at a site three-quarters of a mile below headgate. Return flow enters 

Moore Creek below mouth of Pine Creek. Net diversion, In acre-feet, from Pine Creek 

as determined from these records Is given In the following table:

October 1940......... 14

November............. 27

December............. 9

January 1941......... 3

February............. 17

March................ 76

April................121

May................... 58

June.................. 69

July.................. 17

August................ 7

September............. 0

October............... 6

November 1-8.......... 3

Station operated In connection with a study of silt movement In the Boise River Basin.
BOISE RIVER BASIN 147

Discharge, In second-feet, of Pine Creek above Barry Placer dlvsrslon, near Idaho City,Idaho, 1940-41

1940-41

D»y

i

2

S

4

5

6

7

S

9

10

11

18

IS

14

15

16

17

18

19

80

21

82

23

24

25

26

27

88

29

SO

SI

Oct.

0.25

.58

.35

.29.

.25

.22

.22

.19

.19

.19

.19

.16

.16

.16

.16

.19

.19

.19

.19

.19

.19

.19

.19

.43

.62

.35

.29

.25

.25

.39

.51

Nov.

0.62

1.0

.70

.51

.47

.39

«.62

.64

.51

.43

.39

.29

0.30

.32

.29

.29

-.35

.35

«.32

0.30

.32

0.30

0.30

.29

.29

0.30

.32

.43

.82

.58

~

Dec.

0.47

.43

.39

.43

.43

.43

.39

.39

.35

0.30

0.25

0.30

0.25

0.25

0.25

0.30

.35

.39

.54

.70

.62

.94

1.0

1.1

.97

.86

1.3

1.0

.94

«.94

.86

Jan.

0.74

.70

.74

.78

.74

.74

.70

.70

.66

.62

.62

.62

.62

.74

.66

.62

.66

.66

.66

.66

.66

.66

.66

.66

.66

.66

«.66

.66

.66

.66

.66

Pet.

0.66

.66

.66

.66

.70

.74

.90

.82

.82

«.86

1.2

1.3

1.2

1.1

.94

.78

.74

.70

.74

.74

.86

1.4

1.6

*2.1

1.7

1.5

1.3

1.4

_

_

-

Mar.

2.4

2.6

2.2

2.0

2.0

2.0

2.0

2.0

1.9

«1.8

1.7

1.6

1.5

1.6

1.5

1.6

1.8

1.8

1.8

1.9

1.8

1.7

1.8

1.7

1.7

1.7

1.8

2.4

2.0

2.0

2.0

Apr.

2.0

2.0

2.4

2.2

3.0

2.6

2.4

2.2

2.2

3.0

3.3

3.9

2.7

2.4

2.3

2.2

2.0

2.0

1.8

1.8

1.7

1.6

1.5

1.5

1.4

1.3

1.3

1.2

1.2

1.1

~

Hay

1.2 i.i

1.6

1.3

4.6

5.6

5.6

4.2

.82

.94

.82

1.1

.86

1.2

3.7

2.9

1.1

.97

.94

.70

.47

.47

.43

.47

.47

.74

.66

.51

.51

.78

.66

June

0.54

.47

.43

.39

.35

.43

1.1

1.1

.86

.74

.66

.62

.54

.51

.47

.47

.51

.70

.70

.47

.43

.35

.35

.35

.35

.35

.35

.32

.29

.29

-

July

0.25

.25

.22

.19

.19

.19

.16

.16

.16

.16

.19

.16

.16

.16

.16

.19

.14

.16

.14

.14

.11

.09

.09

.09

.09

.19

.16

.19

.16

.11

.11

Aug.

0.11

.11

.09

.09

.09

.09

.11

.11

.14

.14

.90

.39

.22

.16

.16

.16

.22

.29

.22

.19

.16

.16

.16

.16

.16

.16

.14

.14

.14

.14

.14

Sept.

0.16

.22

.19

.16

.19

.51

.62

.66

.66

.58

.66

.74

.66

.62

.58

.22

.16

.16

.16

.16

.16

.16

.16

.16

.19

.19

.22

.22

.19

.22

# Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Day

1

2

3

4

5

6

7

8

9

10

Oct.

0.22

.22

.25

.35

.43

.35

.32

.29

.29

.25

Nov.

0.29

.29

.47

.47

.35

.32

.29

.29

_

_

Day

11

12

13

14

15

16

17

18

19

20

Oct.

0.25

.25

.25

.22

.22

.22

.22

.22

.39

.32

Nov.

_

_

-

_

-

_

-

_

_

-

Day

21

22

23

24

25

26

27

28

29

30

31

Oct.

0.25

.25

.25

.25

.29

.29

.29

.32

.32

.29

.29

Nov.

_

»

_

»

-

_

-

»

»

-

-

Monthly discharge. In second-feet, 1940-41

Month

May.................... ...................

Water year 1940-41 .....................

Secondfoot-days

12.94

18.12

-

28 78

4 92

292.83

2.77

Maximum

1.3

-

5.6

.47

Minimum

.25

-

29

.09

no

.29

Mean

.585

-

.802

.346

Run-off in 

acre -feet

36

-

94

9 a

581

5.5
148 BOISE RIVER BASIN

Elk Creek above Gold Hill Placer diversion, near Idaho City, Idaho

Location.- Water-stage recorder, lat. 43°54'00", long. 115°47'30" J in SWiNWi sec. 31, T.

 7 N., R. 6 E., a quarter of a mile upstream from headgates of Gold Hill Placer

diversion, half a mile above Forest King Gulch, and 5i miles north of Idaho City. 

Drainage area.- 13.1 square miles.

Records available.- February 1940 to November 1941 (discontinued). 

Extremes.- 1940-41: Maximum discharge during water year, 173 second-feet Aug. 17 (gage

 height, 3.48 feet), from rating curve extended above 60 second-feet; minimum, 3.9 

second-feet Feb. 17 (gage height, 1.00 foot).

1940-41: Maximum discharge, that of Aug. 17, 1941; minimum discharge, 3.6 secondfeet Aug. 20, 1940; minimum gage height, 0.90 foot Feb. 12, 20, 1940.

Remarks.- Records good except those for period of ice effect which are fair. No diverslon or regulation above station. Station operated In connection with a study of silt 

movement In the Boise River Basin.

Discharge, ID second-feet, 1940-41 

1940-41

D«y

i

2

S

4

6

6

7

8

9

10

11

12

13

14

15

16

17

18

19

80

21

22

23

24

25

28

27

28

29

30

51

Oct.

6.5

9*3

8.4

6.9

6.1

5.8

5.5

5.6

5.5

6.5

6.6

6.1

5.8

5.8

5.8

5.8

5.8

5.8

5.8

5.8

5.8

5.8

5.8

7.2

13

8.0

7.6

7.2

7.2

7.6

8.4

Nov.

8.9

12

9.8

8.0

8.0

8.0

9.8

9.8

9.3

8.0

7.2

6.5

7*6

8.9

8.4

8.0

7.2

7.2

6.1

6.9

6.5

8.9

7,6

8.0

6.5

6.1

6.1

6.5

8.9

7.2

-

Dee.

6.9

6.6

6.9

6.9

6.9

6.5

6.5

6.1

6.1

b6.0

b5.5

1)5.0

b5.0

b5.0

b5.5

b6.0

b6.5

b7.0

7.0

6.7

6.7

7.0

7.0

7.0

6.7

6.3

7.0

6.3

6.3

6.3

6.5

Jan.

6.3

6.0

5.3

5.6

5.6

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

5.6

5.6

5.6

6.0

6.0

5.6

5.6

5.6

5.6

5.6

5.6

5.3

5.6

5.6

5.6

6.0

Feb.

6.0

5.6

5.6

5.6

6.0

6.0

6.3

6.0

6.0

6.0

6.7

6.3

6.0

6.0

6.0

5.6

6.0

6.0

6.0

6.0

6.3

7.0

7.8

8.2

7.8

7.4

7.4

9.0

_

-

Mar.

12

12

11

9.9

9.9

9.4

9.9

11

12

11

12

12

11

11

10

12

14

16

15

15

15

15

14

14

15

17

19

19

21

22

22

Apr.

23

24

24

24

25

23

22

21

21

23

22

24

25

27

27

25

22

20

19

19

20

22

24

27

29

31

34

39

41

44

-

Hay

46

42

51

47

45

41

39

39

37

39

43

50

57

52

44

39

36

34

31

29

28

28

30

32

34

38

38

34

31

33

38

June

36

34

32

32

30

29

38

37

35

32

31

29

28

27

27

25

24

28

27

24

22

21

20

20

19

18

19

20

19

18

-

July

17

18

17

15

15

14

14

13

13

13

12

12

12

12

12

11

10

11

10

10

9.9

9.4

9.4

9.0

9.0

9.4

9.9

10

9.4

9.0

8.6

Aug.

8.2

8.2

7.8

7.4

7.0

7.0

6.7

7.0

7.4

7.4

9.9

10

8.2

7.4

7.4

7.0

13

12

8.6

7.8

7.4

7.0

7.0

7.0

7.0

7.4

7.0

7.0

7.0

7.0

6.7

Sept.

6.7

7.4

7.8

7.4

7.4

( 7.0

7.0

7.0

7.4

7.0

7.0

7.8

7.4

7.4

7.8

7.0

7.0

6.7

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7,0

7.0

-

b Stage-discharge relation affected by Ice.

Day

1

2

3

4

5

6

7

8

Oct.

7.8

7.4

7.4

9.4

9.4

8.6

8.2

8.2

HOT.

8.2

8.2

11

14

10

9.4

8.6

8.6

Day

9

10

11

12

13

14

15

16

Oct.

8.2

8.6

8.2

8.2

7.8

7.4

7.4

7.4

NOT.

_

_

_

_

_

_

_

-

Day

17

18

19

20

21

22

23

24

Oct.

7.4

7.4

8.2

8.2

7.8

7.8

7.8

7.8

HOT.

_

_

_

_

_

_

_

-

Day

25

26

27

28

29

30

31

Oct.

7.8

8.2

8.2

9,0

8.6

8.2

8.2

HOT.

_

_

_

_

_

_

.

Monthly discharge, In second-feet, 1940-41

Month

May..........................

Water year 1940-41 ........

 oreaber, .Jj-8,. ...............

Seeondfoot-daye

206.6 

237.9 

197.4

.

179.3 

180.6 

429.1 

771 

1,204 

801 

364.0 

242.9 

214.2

5,028.0

250.2

78.0

Maximum

13 

12 

7.0

_

6.3 

9.0 

22 

44 

57 

38 

18 

13 

7.8

57

9.4

14

M<THTM»m

5.5

6.1 

5.0

_

5.3 

5.6 

9.4 

19 

28 

18 

8.6 

6.7 

6.7

5.0

7.4 

8.2

Mean

6.66 

7.93 

6.37

_

5.78 

6.45 

13.8 

25.7 

38.8 

26.7 

11.7 

7.84 

7.14

13.8

8.07 

9.75

Per 

square

mile

0.50S 

.605 

.486

_

.441 

.492 

1.05 

1.96 

2.96 

2.04 

.893 

.598 

.545

1.05

.616 

.744

Run-off

Inches

0.59 

.68 

.56

_

.51 

.51 

1.21 

2.19 

3.41 

2.28 

1.03 

.69 

.61

14.27

.71 

.22

Acre-feet

410 

472 

392

_

356 

358 

851 

1,530 

2,390 

1,590 

722 

482 

426

9,980

496

155
BOISE RIVER BASIN 

New York canal near Barber, Idaho

149

Location.- Water-stage recorder in trapezoidal concrete-lined canal section, lat. 43°33' 

 long. 116°07', in SEiNEi sec. 32, T. 3 N., R. 3 E., 1 mile south of Barber and If 

miles downstream from head gates at Boise River diversion dam and power plant.

Records available.- February 1939 to September 1941.

Extremes.- Maximum discharge during year, 2,780 second-feet May 29 (gage height, 9.18 

reet;; no flow for long periods during year. «

1939-41: Maximum 'discharge, 2,890 second-feet May 5, 1939; maximum gage height, 

that of May 29, 1941; no flow for long periods each year.

Remarks.- Records good. Canal diverts from Boise River in sec. 3, T. 2 N., R. 3 E., 8 

miles below Moore Creek, for irrigation of 166,396 acres included in Boise Project 

of Bureau of Reclamation and as a feeder canal for Deer Flat Reservoir near Caldwell 

(capacity, 177,153 acre-feet). Flow regulated by head gates. Station operated in 

connection with a study of silt movement in the Boise River Basin.

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

795 

702 

635 

632 

643

646 

646 

649 

460 

0

0 

0 

0 

0 

0

0 

0 

0 

f!88 

649

946 

1,010 

1,010 

998 

519

0 

0 

0 

0 

0 

0

Nov.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

fS46 

59.0 

1,020 

1,220 

1,250

1,250 

1,240 

1,250 

1,280 

1,310

Dec.

1,310 

1,360 

1,430 

1,370 

1,250

943 

S38 

1,240 

1,230 

1,220

1,180 

1,160 

1,140 

1,120 

1,120

6S4 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Jan. Feb.

0 

a60 

f247 

377 

556

768 

1,030 

1,040 

1,030 

1,040

1,030 

936 

S10 

792 

7SO

762 

750 

753 

750 

723

677 

711 

76S 

804 

735

665

624 

621

Month

Get

No\ 

Dee

C

Jar 

Pet 

Hai

Api 

Itoj 

Jur 

Ju] 

Aug 

Sei

H

alendar year 194

ater year 1940-4

liar.

68S 

771 

629 

582 

590

702 

780 

904 

974 

1,010

1,060 

1,OSO 

1,160 

1,130 

1,110

209 

0 

0 

0 

0

0 

0 

f501 

1,100 

1,380

1,540 

1,630 

1,740 

1,870 

1,740 

1,440

Apr.

1,380 

1,350 

1,370 

1,470 

1,530

1,410 

1,240 

967 

852 

828

840 

852 

942 

1,090 

1,270

1,500 

1,680 

1,740 

1,730 

1,780

1,330 

2,020 

2,140 

2,260 

2', 320

2,330 

2,300 

2,290 

2,260 

2,190

Secondfoot-daya

11,128 

10,656 

IS, 595

370,723

0 

19,329 

26,320 

47,801 

71,950 

65,190 

52,390 

40,210 

21,187

385,256

May

2,240 

2,220 

2,070 

1,860 

1,700

1,560 

1,490 

1,640 

1,690 

1,610

1,690 

1,930 

2,180 

2,400 

2,530

2,580 

2,610 

2,640 

2,640 

2,660

2,700 

2,720 

2,730 

2,720 

2,730

2,730 

2,740 

2,740 

2,720 

2,740 

2,740

Maximum

1,010 

1,310 

1,430

2,710

0 

1,040 

1,870 

2,330 

2,740 

2,740 

1,970 

1,540 

1,240

2,740

June

2,740 

2,730 

2,740 

2,740 

2,740

2,740 

2,610 

2,210 

1,950 

1,980

2,010 

1,930 

1,890 

1,900 

2,000

2,160 

2,350 

2,460 

2,340 

2,330

2,500 

2, ISO 

1,920 

1,320 

1,820

1,790 

1,810 

1,700 

1,590 

1,510

July

1,460 

1,460 

1,460 

1,490 

1,550

1,600 

1,740 

1,880 

1,940 

1,960

1,960 

1,960 

1,960 

1,970 

1,950

1,930 

1,910 

1,900 

1,860 

1,820

1,790 

1,750 

1,710 

1,650 

1,560

.1,520 

1,520 

1,460 

1,300 

1,200 

1,170

Minimum

0 

0 

0

0

0 

0 

0 

828 

1,490 

1,510 

1,170 

1,090 

0

0

Aug.

1,180 

1,210 

1,230 

1,330 

1,410

1,440 

1,490 

1,520 

1,540 

1,540

1,540 

1,390 

1,380 

1,370 

1,310

1,310 

1,310 

1,320 

1,300 

1,250

1,210 

1,210 

1,210 

1,210 

1,230

1,210 

1,150 

1,130 

1,090 

1,090 

. 1,100

Mean

359 

355 

600

1,013

7*81 

849 

1,593 

2,321 

2,173 

1,690 

1,297 

706

1,055

Sept.

1,110 

1,050 

995 

984 

998

998 

995 

988 

964 

964

984

970 

911 

390 

904

 966 

1,050 

1,160 

1,240 

944

0 

0 

0 

0 

0

0 

0 

0 

f313 

819

Run- off In 

acre-feet

22,070 

21,140 

36,880

735,300

0 

39,330 

52,200 

94,310 

142,700 

129,300 

103,900 

79,760 

42,020

764,100

a Ho gage-height record; discharge computed on basis of records for Boise River at Boise. 

f Computed on basis of partly estimated gage-height record.
150 BOISE RIVER BASIN 

Cottonwood Qulch at Boise, Idaho

Location.- Water-stage recorder and broad-crested wooden control with trapezoidal notch

for low flows, lat. 43°37', long. 116°11', on United States Military Reservation,!

mile east of Boise post office. 

Drainage area.- 16.0 square miles.

Records available.- January 1939 to December 1941 (discontinued). 

Extremes.- 194£P¥I: Maximum discharge during water year, 12.9 second-feet Jan. 25 (gage

neignt, 4.10 feet); minimum, 0.03 second-foot Aug. 3; minimum gage height, 3.05 feet

June 5.

1939-41: Maximum discharge, 62 second-feet Mar. 19, 1939, Mar. 31, 1940; maximum

gage height, that of Jan. 25, 1941; no flow, Aug. 25, 1939. 

Remarks.- Records good except those below 0.1 second-foot, which are fair. No diversion.

Station operated in connection with a study of silt movement in the Boise River Basin.

Discharge, in second-feet, 1940-41 

1940-41

Day

1 

2 

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

0.05

.05 

.05 

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.05

.05

.04

.04

.04

.05

.05

.04

HOT.

0.16 

3.1 

1.7

1.1

.92

1.0

1.0

1.0

.93

1.0

.37

.70

.81

.87

.92

.92

.98

.92

.98

.93

.87

.31

.37

.87

.67

.92

1.1

1.9

1.7

-

Dee.

1.5

1.4 

1.4

1.4

1.3

1.3

1.3

1.3

.98

.76

.66

.57

.48

.70

.76

.70

.93

1.2

1.3

1.3

1.4

1.5

1.7

1.6

1.7

2.4

2.5

2.4

2.2

2.0

Jan.

1.4 

1.2 

1.3 

1.7

1.6

1.7

1.7

1.7

1.6

1.5

1.5

1.4

1.5

2.6

2.5

2.4

2.5

3.3

3.9

3.6

3.5

3.3

3.3

3.9

6.6

9.8

8.0

7.5

6.6

6.1

5.5

Feb.

4.9 

4.9 

4.2

3.8

3.9

6.8

5.9

5.9

6.3

8.3

9.6

9.3

8.5

S.O

7.2

6.8

6.6

6.3

5.9

5.9

6.3

6.3

8.5

S.5

8.0

7.5

7.8

_

_

-

Mar.

7.S 

8.2 

7.8

7.4

7.6

7.0

6.7

6.4

6.4

6.2

6.0

5.5

5.0

6.0

4.6

4.4

4.2

4.2

3.9

3.8

5.6

3.4

3.4

3.2

3.2

3.0

2.9

3.3

3.4

3.0

Apr.

3.4 

3.9 

4.6

7.9

5.7

6.5

5.2

5.0

7.3

7.6

8.2

8.2

8.2

7.9

7.9

7.3

7.0

6.2

6.0

5.5

5.2

4.3

4.4

4.4

4.2

3.9

3.8

3.4

3.4

-

May

3.9 

3.4 

5.0

4.1 

3.9

3.4

3.3

4.4

3.2

2.8

2.3

2.2

2.4

2.3

2.1

2.0

1.8

1.9

1.8

1.6

1.4

1.3

1.2

1.1

1.2

1.5

1.5

1.4

1.3

1.7

1.8

June

1.5 

1.2 

1.2

1.2 

1.1

1.3

7.6

7.0

4.4

3.1

2.5

1.9

1.8

1.7

1.4

1.4

1.3

2.0

i.e

1.4

1.2

.92

.76

.70

.76

.70

.98

1.5

1.6

1.1

-

July

0.67 

.92

1.5

 9S 

.31

.61

.57

.48

.42

.33

.38

.32

.27

.25

.82

.18

.15

.13

.11

.10

.09 .09'

.07

.07

.07

.07

.16

.20

.15

.13

.10

Aug.

0.10 

.10 

.09

 09 

!o9

.07

.06

.06

.06

.06

.18

.20

.13

.10

.09

.09

.09

.20

.15

.11

.11

.11

.11

.15

.18

.18

.18

.20

.20

.20

.20

Sept.

0.20 

.25 

.27

.25 

.22

.25

.27

.27

.25

.22

.27

.32

.32

.32

.32

.32

.30

.30

.32

.35

.35

.35

.35

.38

.35

.35

.42

.42

.42

.42

Day

1

2

3

4

5

6

7

8

9

10

11

Oct.

0.38

.45

.45

.52

.57

.61

.61

.66

.61

.57

.57

HOT.

1.0

1.1

1.2

1.7

1.3

1.2

1.2

1.1

1.1

1.1

.98

Dec.

0.9S

1.2

1.3

1.5

1.4

1.4

1.3

1.2

1.0

1.2

1.1

Day

12

13

14

15

16

17

IS

19

20

21

22

Oct.

.57

.61

.61

.61

.61

.61

.66

.76

.81

.76

.81

HOT.

.98

.98

1.3

1.3

1.3

1.3

1.3

1.1

.93

1.0

.76

Dec.

1.1

1.0

1.3

1.5

1.3

1.4

2.4

2.8

3.3

3.2

2.8

Day

23

24

25

26

27

28

29

30

31

Oct.

.81

.81

.92

.87

.98

1.3

1.1

1.0

1.0

HOT.

.76

.98

1.0

1.0

1.0

1.0

1.0

1.0

_

Dec.

2.8

2.6

1.2

s

I

>al.5

I

)

h2.0

a Ho gage-height record; discharge computed on basis of records for Moore Creek near 

Arrowrock.

h Computed from staff gage reading.

Monthly discharge. In second-feet, 1940-41

Month

May.......................................

Secondfoot-days

42.09

1,244.78

3 94

849,83

51.78

881.32

MaxlJBum

0.05

3.1

2.5

35

9.8

8.2

5.0

9.8

3.3

9.8

Minimum

0.04

.16

.48

.04

1.2

2.9

3.4

1.1

.70

.07

.06

.20

.04

.76

.98

.06

Mean

0.042

1.07

1.36

3.40

3.37

6.66

5.10

5.69

2.36

1.91

.350

.127

.313

2.33

1.10

1.67

2.41

Run-off In 

acre-feet

2.6

64

83

2,470

207

370

313

338

145

113

22

7.8

19

1,680

65

103

1,750
BOISE RIVER BASIN 151

Deer Flat Reservoir near Caldwell, Idaho

Location.- Staff gages attached to outlet structures at each end of reservoir. One gage is 

at lower embankment, lat. 43°35', long. 116°45', in SEi sec. 19, T. 3 N., R. 3 W., 5 

miles south and 2 miles west of Caldwell; the other is at upper embankment, lat. 43°34', 

long. 116 039', in NWi sec. 36, T. 3 N., R. 3 W., 1 mile south and 4 miles west of Nampa. 

Datum of gage is 2,500.5 feet above mean sea level (surveys of Bureau of Reclamation.

Records available.- October 1917 to September 1941.

Extremes.- Maximum contents observed during year, 178,100 acre-feet Apr. 30, 21 (gage 

height, 30.10 feet); minimum observed, 28,000 acre-feet Oct. !.

1917-41: Maximum contents observed, 178,900 acre-feet Apr. 27, 28, 1922, Apr. 24, 

1932 (gage height, 30.18 feet); minimum observed, 5,390 acre-feet Oct. 22, 1924.

Remarks.- Reservoir is formed by two earth embankments; dams were completed and storage 

began in 1908. Capacity, 177,150 acre-feet, between gage heights 0.0 foot (sill of 

outlet gates) and 30.0 feet (maximum operating level). Dead storage about 13,000 acrefeet. Below gage height 12.0 feet reservoir divides into two pools. In addition to 

water received from local drainage, reservoir receives water from Boise River through 

New York canal of Boise project. Water is used for Irrigation of lower project lands. 

Figures given herein represent usable contents. Gage read once daily.

Cooperation.- Gage-height record and capacity table furnished by Board of Control for 

Boise project.

Contents, In acre-feet, water year October 1940 to September 1941

D«y

1

z

5

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

23

24

26

26

27

28

29

SO

91

Oct.

28,000

28,480

29,170

29,610

30,060

30,560

31,180

31,910

32,390

32,860

33,010

32 , 860

32,700

32,550

32,180

32,040

32,040

31,880

31,680

31,420

31,420

31,310

31,780

31,980

32,390

33,470

34,370

34,740

35,020

35,280

35,540

HOT.

35,710

36,030

36,230

36,350

36,440

36,560

36,660

36,860

37,040

37,160

37,200

37,380

37,530

37,650

37,770

37,890

38,000

38,070

36,200

38,390

38,590

38,680

38,810

41,040

43,440

46,040

48,540

51,270

53,780

56,390

-

Dee.

58,520

60,560

62,700

64,860

67,240

69,590

70,230

71,330

73,340

75,640

77,900

80,120

82,230

84,220

86,300

88,340

90,240

90,530

90,390

90,240

90,170

90,240

90,170

90,320

90,320

90,320

90,320

90,320

90,170

90,170

90,170

Jan.

90,030

89,960

89,890

89,750

89,750

89,680

89,750

89,680

89,610

89,610

89,610

89,460

89,460

89,460

89,610

89,610

89,610

89,460

89,460

89,460

89,460

89,390

89,390

89,390

89,390

89,390

89,390

89,390

89,320

89,320

89,320

Feb.

89,320

89,320

89,320

89,320

89,820

90,170

91,100

92,960

94,770

96,880

98,940

100,900

102,700

104,200

105,600

107,100

108,700

110,000

111,100

112,500

113,900

115,100

116,400

117,700

119,200

120,400

121,700

122,800

-

-

-

Mar.

123,900

125,200

126,200

127,500

128,400

129,300

130,300

132,100

133,400

134,800

136,000

137,700

139,800

142,000

143,900

145,800

146,900

146,700

146.500

146,100

145,800

145,500

145,000

144,600

145,100

147,100

148,900

150,200

152,000

153,700

155,500

Apr.

158,100

160,700'

163,000

165,100

167,400

169,800

171,900

173,500

174,800

175,400

175,900

176,200

176,300

176,900

177,200

177,100

177,200

177,600

178,000

178,100

178,100

177,700

176,600

175,000

173,400

171,700

170,300

168,500

166,700

164,900

-

Mar

162,900

161,100

159,600

158,000

156,300

155,100

153,800

152,700

152,200

152,200

152,400

152,500

152,600

152,800

153,000

153,700

154,800

155,400

156,200

157 , 000

157,300

157,300

156,800

155,900

155,000

154,100

153,400

152,600

152,100

151,400

152,100

June

152,900

154,000

155,700

157,300

159,000

160,900

162,400

165,200

167,200

169,300

171,800

174,200

176,100

177,300

177,400

177,600

177,400

177,400

177,400

176,600

176,200

176,500

176,800

176,300

175,100

173,400

170,600

169,600

168,300

166,700

July

165,300

164,000

162,100

161,100

159,600

157 , 900

155,900

153,700

151,500

149,100

146,700

144,700

142,600

140,300

138,200

136,000

134,000

131,700

130,100

128,100

126,200

124,400

122,500

120,600

119,000

117,600

115,800

114,800

113,200

112,100

110,600

Aug.

109,600

108,300

107 , 000

105,200

103,400

101,800

99,900

97,980

96,010

94,190

92,680

90,890

89,540

88,340

87,070

86,230

85,610

84,840

84,080

83,320

82,230

81,140

80,250

 78,840

77,900

76,830

75,700

74,390

73,400

72,170

70,940

Sept.

69,910

69,270

68,640

67,870

67,050

66,240

65,300

64,420

63,870

63,190

62,390

61,780

61,110

60,620

60,080

59,420

58,700

58,280

57,690

57,210

56,680

56,390

56,390

56,160

55,690

55,340

54,760

53,830

53,260

52,570

Monthly gage height and contents, water year October 1940 to September 1941

Date

Dec. 31.................

Calendar year 1940. . . .

Water year 1940-41....

Qage height 

(feet )

(Upper) 8.86

(Lower) 8.72 

(Upper )10. 54

19.60

-

28.72

22.35

13.74

-

Contents 

(acre -feet)

27,740

35,540

56,390

90,170

-

89,320

122,800

155,500

164,900

152,100

166,700

110,600

70,940

52,570

-

Change In contents 

during month, 

(acre-feet)

_

+7,800

+20,850

+33,780

+4,080

-850

+33 , 480

+32,700

+9,400

-12,800

+14,600

-56,100

-39,660

-18,370

+24,830
152 MALHEUR RIVER BASIN

Malheur River near Drewsey, Oreg.

Location.- Water-stage recorder, lat. 43°47', long. 118°20', in SEi sec. 31, T. 20 S., 

RT3QE., 300 feet downstream from crossing of Burns-Ontario highway, half a mile 

downstream from Cottonwood Creek, and 3 miles southeast of Drewsey. Datum of gage Is 

3,479.29 feet above mean sea level, datum of 1929.

Drainage area;- 982 square miles.

Records available.- June to December 1920, April to September 1921, June 1939 to September 

1941.April to September 1923 and June 1926 to June 1939, at site 7 miles downstream.

Average discharge.- 15 years (1926-41), 141 second-feet.

Extremes.- Maximum discharge during year, 3,100 second-feet Mar. 2 (gage height, 10.02 

reet); minimum, 5.2 second-feet Aug. 18, 19.

1920-21, 1923, 1926-41: Maximum discharge, 4,290 second-feet Feb. 27, 1940 (gage 

height, 11.35 feet), from rating curve extended above 2,500 second-feet: no flow at times.

Remarks.- Records fair. Several small diversions above station for Irrigation.

Rating tables, water year 1940-41, exeept periods of lee effect (gage height, in feet, and 

discharge, In second-feet)

Oct. 1-26 Oct. 27 to Sept. 30

3.2 

3.4 

3.6

32

67

89

2.6 

2.8 

3.0 

3,8 

3.6

4.5

13

30

66

114

4.0 

4.6 

6.0 

6.6 

6.0

193

310

460

610

790

7.0 

8.0 

9.1

1,230

1,730

2,420

Discharge, In second-feet, water year October 1941 to September 1942

Day

1 

2 

3 

4 

5

6 

7 

8 

9

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

33 

44 

60 

63 

46

39

40 

37 

32 

29

29 

29 

29 

29 

26

26 

27 

28 

29 

28

29 

20 

33 

40 

82

98

231 

128 

114 

150

118

NOT.

148 

316 

197 

142 

106

94 

94 

107 

102 

94

S4 

84 

66 

62 

69

72 

78 

76 

65 

58

b50 

b51 

b56 

60 

68

68 

63 

66 

78 

89

Dec.

94

89 

84 

S3 

78

76 

76 

66 

66 

b60

b62 

b44 

38 

31 

28

31 

31 

37 

43 

64

78 

164 

316 

600 

260

170 

680 

392 

202 

168 

132

Jan.

127 

bl!4 

bS9 

76 

S3

b94 

97 

94 

91 

b87

b81 

b78 

75 

78 

SO

81 

76 

72 

76 

80

81 

81 

83 

86 

91

367 

267 

189 

146 

116 

114

Feb.

107 

104 

blOO 

b96 

b96

b98 

102 

106 

109 

125

267 

376 

256 

180 

146

119 

114 

114 

132 

238

340 

338 

461 

1,110 

868

414 

340 

1,020

Month

Oet 

Non 

Dee

C

Jar 

Fet 

Max 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

n

alendar year 19< 0....... ...............

ater year 1940-'

Mar.

2,310 

2,400 

2,040 

1,600 

1,200

1,480 

1,340 

1,400 

1,640 

1,400

1,230 

1,180 

978 

716 

680

942 

1,360 

1,700 

1,670 

1,240

1,050 

1,000 

1,040 

924 

938

1,090 

1,170 

1,310 

1,360 

1,330 

1,220

Apr.

1,270 

1,380 

1,190 

1,110 

1,630

1,290 

1,040 

992 

1,000 

1,160

1,120 

924 

902 

916 

884

842 

726 

648 

686 

524

492 

465 

460 

469 

456

463 

469 

463 

432 

435

Secondfoot-days

1,746 

2,761 

4,322

77,036.6

3,340 

7,863 

40,737 

24,677 

12,032 

4,663 

882 

478.2 

862

104,252.2

May

656 

740 

766 

762 

680

603 

637 

617 

617 

441

396 

379 

411 

486 

436

370 

338 

316 

298 

266

224 

200 

176 

162 

174

193 

186 

176 

195 

220 

325

Maximum

231 

316 

680

3,660

367 

1,110 

2,400 

1,630 

766 

322 

76 

24 

39

2,400

June

322

23S 

191 

193 

170

158 

264 

303 

238 

204

180 

166 

150 

142 

140

126 

118 

126 

162 

160

126 

104 

84 

69 

66

68 

72 

78 

81 

78

July

76 

.62

56

51

49 

46 

43 

32 

27

19 

19

19 

19 

18

15 

16 

19 

19 

19

17 

16 

15 

16 

16

17 

IS 

19 

SO 

21 

21

Aug.

21

21 

20

16 

16

16 

12 

12 

12 

12

13 

19 

21 

16 

11

8.0 

8.0 

6,6 

6.6 

14

14 

12 

12 

15 

16

17 

19 

23 

23 

24 

24

Minimum Mean

26 66.3 

50 92.0 

28 139

1.2 210

72 108 

96 281 

680 1,314 

432 823 

162 388 

66 162 

15 28.6 

6.6 16.4 

18 28. 7

6.6 286

Sept.

2*

26 

28 

39 

39

36 

36 

53 

33 

32

32 

35 

38 

56 

32

36 

33 

22 

24 

25

26 

27 

26 

26 

23

22 

21 

SO 

18 

19

Run- off In 

aere-feet

3,460 

6,480 

8,570

162,800

6,620 

16,600 

80,800 

48,950 

23,870 

9,030 

1,760 

948 

1,710

206,800

Peak discharge.- Jan. 26 (3:30 a.m.) 1,020 see. -ft.; Feb. 24 (11 p.m.) 1.670 see. -ft.} Har. 2 

(2:30 a.m.) S.lBO sec. -ft. j Mar. 18 (6 p.m.) 1,870 see. -ft.; Apr. 6 (6 p.m.) 1,820 see. -ft. 

b Stage-discharge relation affected by Ice.
MALHEUR RIVER BASIN 153

Malheur River below Warmsprings Reservoir, near Riverside, Oreg.

Location.- Hook gage, lat. 43°34', long. 118°12', In SWi sec. 17, T. 23 S., R. 37 E., 1 

mile downstream from Warmsprings Dam, 3 miles upstream from South Fork, and 4 miles 

northwest of Riverside.

Drainage area.- 1,100 square miles.

Records available.- December 1914 to July 1917, March 1919 to September 1941. January 

 1906 to March 1907 and December 1908 to September 1910 at site at Riverside, 4 miles

downstream, In reports of Geological Survey. October 1910 to November 1914 at site

at Riverside, In reports of Sftate engineer.

Average discharge.- 29 years (1909-16, 1913-41), 164 second-feet.

Extremes.- Maximum discharge observed during year, 1,500 second-feet Mar. 20-23 (gage 

height, 6.88 feet); no flow Oct'. 1 to Mar. 1.

1906-7, 1908-17, 1919-41: Maximum discharge observed, 5,490 second-feet Mar. 2, 

1910; no flow at times.

Remarks.- Records good. Several small diversions above station for irrigation. Flow compietely regulated since November 1919 by Warmsprings Dam, Oage read once dally.

Rating tables, water year 1940-41, (gage height, in feet, and discharge. In second-feet) 

Dot. 1 to Mar. 14 Mar. 15. to Sept. 30

2.7 

2.3 

3.0 

3.2

0

1.0

5.3

13

3.4

3.7 

4.0

26

63

130

3.7 

3.9 

4,2

63

102

180

4.5 

5.0 

5.5

290

515

760

6.0 

6.5 

6.9

1,020

1,296

1,515

Hote.- Same as preceding table below 

3.7 feet.

Discharge, In aeoond-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Dot 

No-! 

Sec

0

Jan 

Fet 

Bar 

Api 

«a3 

JUT 

Jul 

Aug 

Sej

11

alendar yearl94() ......................

ater year 1940-4

Mar.

0

4 

11 

11 

11

11 

11 

11 

11 

13

12 

12

12 

118 

275

470 

660 

1,090 

1,420 

1,470

1,500 

1,500 

1,420 

1,330 

1,250

1,170 

1,160 

1,160 

1,160 

1,160 

829

Apr.

40 

48 

65 

138 

492

1,240 

1,340 

1,300 

1,160 

1,100

992

340 

715 

715 

745

7S5 

765 

710 

650 

585

542 

506 

488 

466 

452

443 

443

433 

438 

438

Secondfoot -day a

0 

O 

0

59,631

0 

0 

19,272 

19,089 

12,709 

7,333 

7,891 

10,221 

7,032

83,647

May

497 

488 

635 

670 

705

650 

610 

575 

542 

502

470 

425 

434 

443 

452

425 

394

389 

358 

299

299 

308 

308 

304 

290

266 

243 

232 

212 

159 

125

Maximum

O 

0 

0

632

0 

0 

1,500 

1,340 

705 

484 

353 

443 

266

1,500

June

156 

187 

194 

194 

190

174 

201 

215 

215 

212

215

198 

198 

165 

174

165 

184 

226 

226 

232

254 

264 

254

411 

484

380 

380 

363

330 

312

July

258

208 

194 

184 

137

153 

153 

184 

246 

274

290 

312 

326 

330 

344

363 

353 

353 

340 

294

270 

270 

286 

278 

270

254 

243 

204

168 

156 

166

Minimum

0 

0 

0

0

0 

0

0 

40 

125 

156 

153 

198 

198

0

Aug.

198 

218 

260 

250 

363

416 

433 

443 

438 

438

371 

407 

438 

430 

412

376 

358 

358 

335 

304

290 

282 

282 

282 

262

282 

274 

264 

264 

264 

254

Mean

0 

0

0

163

0 

0 

622 

636 

410 

244 

255 

330 

234

229

Sept.

264 

246 

229 

218

218

218 

218 

218 

218 

229

254 

266 

266 

266 

266

266 

266 

258 

246 

246

246 

246 

226

198

198

204

212 

212 

212

212

Run-off In 

acre-feet

0 

0 

0

118,400

0 

0 

38,830 

37,860 

25,210 

14,540 

15,650 

20,270 

13,960

165,700
154 MkLHEUR RIVER BASIN

Malheur River near Hope, Oreg.

Location.- Water-stage recorder, lat. 43°57', long. 117°29', In SWi sec. 5, T. 19 S., R.

 43 E., half a mile upstream from Intake of Vines canal and 6i miles west of Hope.

Drainage area.- 3,030 square miles.

Records available.- May 1919 to September 1941 (Incomplete prior to October 1922).

Average discharge.- 18 years (1922-25, 1926-41), 208 second-feet.

Extremes.- Maximum discharge during year, 3,260 second-feet Mar. 1 (gage height, 5.12

 reet); minimum, 22 second-feet Oct. 15, 16, Jan. 11.

1919-41: Maximum discharge, 8,100 second-feet Feb. 5, 1925 (gage height, 8.1 feet), 

from rating curve extended above 3,000 second-feet; minimum, 3.5 second-feet Sept. 2, 

1919 (gage height, 0.02 foot).

The two greatest floods known occurred In March 1894 and March 1910.

Remarks.- Records good except those for periods of Ice effect, which are fair. Vale-

 Oregon canal diverts at Namorf; no other large diversions above station but many

small ones. Flow regulated by Warmsprlngs Reservoir and Agency Valley Reservoir (see 

following page).

Rating table, water year 1940-41, except periods of Ice effect (gage height. In-feet, and

discharge, in second-feet) 

(Shifting-control method used May 29 to Sept. 30)

1,0 

1,3

82

38

62

118

1.6 

1.9 

2.2 

2.8

199

312

455

675

3.0 

3.5 

4,0 

4.7

946

1,370

1,880

2,710

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

h40 

h37 

h3S 

h31 

h28

h28 

h31 

h29 

h28 

h29

h2S 

h26 

h26 

h24 

h22

22 

23 

23 

23 

28

28 

28 

28 

36 

73

83 

480 

216 

190 

165 

171

NOT.

16S 

260 

233 

196 

16S

14O 

128 

121 

106 

94

89 

82 

73 

68 

65

62

61 

61 

59 

58

58 

64 

50 

47 

56

58 

58 

58 

58 

57

Dec.

57 

56 

56 

56 

58

53 

53 

53 

52 

47

M3 

b38 

b35 

b35 

D35

b35 

b38 

b42 

b47 

b52

b60 

b65 

75 

73 

82

80 

78 

106 

121 

110a?

Jan.

b7,5 

b60 

b50 

b44 

b48

b58 

b62 

b60 

5S 

70

61 

59 

b62 

b67 

b70

b70 

b73 

b7e 

80 

76

75 

75 

76 

S5 

92

blOO 

bllO 

b!22 

b!35 

b!3S 

140

Feb.

133 

121 

108 

100 

98

96 

112 

121 

128 

241

S33 

1,860 

1,150 

615 

430

330 

279 

241 

256 

465

S19 

1,030 

1,250 

2,350 

2,100

SS9 

621 

916

Month

Oct 

NOT 

Dec

C

Jar 

Fel 

Mar 

Api 

Maj 

Jur 

Ju3 

Aug 

Set

VI

alendar year 19410......................

Tater year 1940-4

Mar.

2,690 

2,340 

1,560 

1,150 

960

960

8S9 

910 

960 

861

840 

626 

812 

SOS 

792

990 

1,240 

1,470 

1,860 

2,070

2,050 

2,110 

2,090 

2,000 

1,870

1,840 

1,810 

1,810 

1,890 

1,870 

1,950

Apr.

1,640 

998 

740 

746 

812

1,510 

2,040 

2,050 

1,890 

1,680

1,640 

1,600 

1,490 

1,320 

1,320

1,360 

1,350 

1,310 

1,170 

96S

847 

720 

633 

544 

516

522 

527 

506 

440 

386

Secondfoot-days

2,062 

2,856 

1.S76

86,539

2,431 

17,694 

46,275 

33,274 

13,666 

4,231 

4,681 

2,947 

3,151

135 ,104

May

3S6 

495 

663 

861 

1,000

990 

903 

779 

682 

651

571 

495 

. 455 

455 

475

470 

43E 

400 

357 

263

20£ 

171 

174 

168 

19C

16E 

154 

16C 

17] 

184 

154

Maximum

480 

260 

121

3,920

140 

2,350 

2,690 

2,050 

1,000 

848 

24S 

171 

135

2,690

June

123 

143 

168 

202 

187

165 

177 

190 

154 

116

106 

100 

91 

85 

S7

89 

89 

91 

106 

108

108 

108 

108 

108 

112

168 

216 

230 

248 

248 

-

July

248 

241 

196 

177 

177

174 

174 

168 

146 

135

140 

140 

140 

140 

140

138 

138 

135 

135 

133

13S 

135 

130 

128 

128

126 

123 

128 

128 

121 

121

Minimum

82 

47 

35

82

44

98 

792 

386 

154 

85 

121 

53 

SO

22

Aug.

110 

94 

85 

78 

70

70 

87 

128 

133 

140

148 

171 

92 

118 

143

135 

128 

91 

94 

92

89 

72 

68 

67 

68

68 

64

62 

53 

61 

68

Mean

66.5 

95,2 

60.5

236

78.4 

632 

1,493 

1,109 

441 

141 

149 

95.1 

105

370

Sept.

87 

104 

121 

104 

87

86

S7 

S7 

89 

S7

87 

94

121 

128 

136

128 

128 

133 

133 

116

118 

126 

130 

126 

94

78 

80 

87 

91 

80

Run- off In 

acre-feet

4,090 

5,660 

3,720

171,600

4,820 

35,1OO 

91,790 

66,000 

27,150 

8,390 

9,170 

5,860 

6,860

268,000

Peak discharge.- Feb, 25 (4 a.m.) S.S30 sec.-ft.s Mar. 1 (9 a.m.) 3,260 sec.-ft.; Mar. 2 (4s30 

i.m.) 3,160 aec.-ft.

to Stage-discharge relation affected by ice. 

h Computed from staff-gage reading.
MALHEUR RIVER BASIN 155

Reservoirs In Malheur River Basin, Oreg.

Warmsprlng Reservoir.- Tape gage, lat. 43°35', long. 118°12', In SEi sec. 8, T. 23 S., R. 

37 E., at dam on nalheur River, 4 miles upstream from South Fork of Malheur River and 

4 miles northwest of Riverside. Datum of gage Is 3,327 feet above mean sea level 

(surveys of Bureau of Reclamation); gage readings have been reduced to elevations above 

mean sea level. Drainage area, 1,100 square miles. Records available, January 1920 to 

September 1941. Maximum contents observed during year, 194,400 acre-feet Apr. 26 

(elevation 3,406.95 feet); minimum observed, 88,580 acre-feet Oct. 1, 2 (elevation, 

3,379.40 feet). Maximum contents observed during period 1920-41, that of Apr. 6, 1941; 

no storage Sept. 18 to Nov. 1, 1929, Aug. 26 to sometime in November 1935.

Reservoir Is formed by concrete arch dam; storage began In 1919. Capacity, 190,000 

acre-feet between elevations 3,327 feet (bottom of outlet tunnel) and 3,406 feet (top 

of 5-foot flashboards). Dead storage, 1,400 acre-feet below elevation 3,327 feet. In 

1926 a half Interest In reservoir was purchased by the Federal Government for Vale 

project of Bureau of Reclamation. Capacity table and dally gage readings furnished by 

Bureau of Reclamation. Water used to Irrigate lands on both sides of river between 

Itaorf and Ontario.

Agency Valley Reservoir.- Pressure'gage with mercury column, lat. 43°55', long. 118°09', 

in sw* sec. 15, T. 19 S., R. 37 E., at dam on North Fork of Malheur River, a quarter 

of a mile northwest of Beulah. Gage readings are elevations above mean sea level by 

original surveys of Bureau of Reclamation, or 7.72 feet less than elevations above mean 

sea level, datum of 1929. Drainage area, 420 square miles. Records available, December 1935, when storage began, to September 1941. Maximum contents observed during 

year, 62,770 acre-feet May 3 (elevation, 3,341.50 feet); minimum observed, 29,810 acrefeet Oct. 1 (elevation, 3,321.20 feet). Maximum contents during period 1935-41, that 

of May 3, 1941; minimum observed since full capacity was attained on Apr. 9, 1938, 

29,410 acre-feet Sept. 18, 1940.

Reservoir is formed by earthflll rock-faced dam: storage began In 1935. Capacity 

59,920 acre-feet between elevations 3,263.21 feet (bottom of outlet tunnel) and 3,340 

feet (top of 17-foot spillway gates); with gates lowered the capacity is 32,220 acrefeet. No dead storage. Water is used for irrigation of lands below Juntura, on Vale 

project of Bureau of Reclamation. Capacity table and daily gage readings furnished by 

Bureau of Reclamation.

Other reservoirs.- There are several other reservoirs In the Malheur River Basin, all with 

less tnan 3,500 acre-feet capacity except Willow Creek No. 3 Reservoir near Malheur, 

which has a capacity of 49,000 acre-feet.

Monthly elevation and contents, water year October 1940 to September 1941

Month

Sept.30. .........................

HOT. 30..........................

Dec. 31..........................

Sept.30. .........................

Water year 1940*41

Warmsprings Reservoir

Elevation 

(feet)

3,379.35 

3,330.50 

3,332.18 

3,384.86

-

3,337.06 

3,392.30 

3,404.10 

3,406.53 

3,406.12 

3,404.86 

3,401.04 

3,395.72 

3,392.10

-

Contents 

(acrefeet)

86,420 

92,100 

97,590 

106,500

-

114,000 

132,900 

131,400 

192,400 

190,600 

184,900 

168,200 

146,300 

132,200

-

Change in 

contents 

during 

month 

(aorefeet)

+3,630 

+5,490 

+8,910

+36,020

+7,500 tie, 900

+48,500 

+11,000 

-1,800 

-5,700 

-16,700 

-21,900 

-14,100

+43,780

Agency Valley Reservoir

Elevation 

(feet)

3,321.15 

3,322.65 

3,325.55 

3,328.56

-

3,331.35 

3,335.05 

3,339.50 

3,340.85 

3,340.15 

3,336.30 

3,323.80 

3,322.80 

3,322.43

-

Contents 

(acrefeet)

29,T4D 

31,750 

35,820 

40,300

-

44,690 

50,910 

58,930 

61,540 

60,200 

53,120 

33,330 

31,950 

31,450

-

Change in 

contents 

during 

month 

(acrefeet)

ts.oio

f4,070 

+4,480

+2,480

+4,390 

+6,220 

+8,070 

+2,560 

-1,340 

-7,080 

-19,790 

-1,380 

-500

+1,710

461677 0-42-11
156 MALHEUR RIVER BASIN

North Fork of Malheur River above Agency Valley Reservoir, near Beulah, Oreg.

Location.- Water-stage recorder, lat. 43°58', long. 118°11', In sec. 33, T. 18 S., R. 37 

E., at M. W. Scott's Ranch, about 3 miles upstream from Warm Springs Creek and 4 miles 

northwest of Agency Valley Dam and Beulah.

Records available.- January to September 1914, June 1936 to September 1941.

Extremes.- Maximum discharge during year, 944 second-feet Apr. 4 (gage height, 4.44 feet); 

minimum, 34 second-feet Dec. 13 (gage height, 0.18 foot).

1914, 1936-41: Maximum discharge recorded, 975 second-feet Mar. 26, 1940 (gage 

height, 4.60 feet); minimum, 19 second-feet Aug. 5, 1939.

Remarks.- Records good except those for periods of shifting control or no gage-height 

record, which are fair, and those for periods of Ice effect, which are poor. A few 

small diversions above station for Irrigation; no regulation.

Rating tables, water year 194O-41, except periods of ,ioe effect or shifting control 

(gage height, In feet, and discharge, In second-feet)

Oct. 1 to- Apr. 4

0.8 

1.0 

1.2 

1.4 

1.6 

1.9

134

195

2.2 

2.5 

3.0 

3.5 

4.0

265

341

479

625

775

Apr. 5 to Sept. 30

1.0 

1.2 

1.4 

1.6

41 

53 

SO 

109 

140 

177

1.9 

2.2 

2.5 

3.0 

3.S

240

312

391

529

765

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24

26

26 

27 

28 

29 

30 

31

Oct.

45 

71 

62 

53 

48

44 

43 

43 

43 

42

42 

41 

41 

40 

40

39 

39 

39 

41 

41

41 

43 

43 

58 

83

72 

91 

64 

68 

67 

67

HOT.

101 

140 

35 

63 

63

59 

63 

70 

60 

51

53 

50 

56 

62 

60

63 

74 

67 

50 

b42

b43 

45 

49 

55 

54

43 

50 

60 

70 

70

Dec.

62 

60 

59 

5S 

59

59 

55 

53 

60 

45

31 

30 

31 

b33 

b37

b42 

b50 

b58 

«b68 

b7S

b93 

106 

169 

138 

93

80 

144 

77 

70 

77 

65

Jan.

53 

42 

b43 

b50 

b60

WO 

b75 

b80 

82 

85

82 

SO 

83 

93

91

91 

36 

82 

60 

a52

a48 

a48 

a52 

62 

91

102 

67 

62 

63 

68 

74

Feb.

73 

65 

59 

55 

58

63 

74 

65 

68 

72

73 

83 

70 

74 

63

6O 

67 

70 

78 

82

88 

91 

109 

177 

129

96 

104 

286

Month

Oct 

Ho\ 

Dec

C

Jar 

Fet 

Mar 

Api 

Maj 

Jur 

Jul 

Axis 

Se]

H

alendar year 19410......................

ater year 1940-'

Mar.

426 

401 

352 

312 

300

295 

328 

387 

412 

379

382 

357 

302 

265 

2S8

382 

499 

580 

502 

440

420 

434 

429 

- 431 

514

563 

652 

736 

754 

730 

727

Apr.

733 

700 

664 

724 

759

645 

603 

589 

663 

669

574 

546 

574 

577 

592

537 

490 

445 

413 

396

386 

394 

402 

413 

413

421 

415 

407 

415 

432

Seoondfoot-days

1,594 

1,871 

2,145

42,484

2,177 

2,462 

13,979 

15,991 

11,690 

4,559 

2,021 

1,591 

1,622

61,702

May

627 

657 

654 

589 

551

501 

459 

451 

402 

378

359 

407 

501 

473 

418

373 

351 

333 

302 

268

249 

238 

231 

240 

258

249 

236 

231 

236 

225 

238

Maximum

91 

140 

169

823

102 

286 

754 

759 

657 

252 

96 

67 

62

759

June

212 

195 

205 

187 

177

189 

252 

214 

197 

168

168 

154 

145 

149 

149

142 

153 

153 

156 

130

112 

104 

97 

102 

109

108 

106 

110 

114 

102

July

96 

90 

S3 

81 

77

76 

76 

74 

69 

67

66 

63 

62 

61 

60

58 

61 

69 

69 

66

67 

65 

58 

53 

53

49 

47 

48 

56 

49 

47

Minimum

39 

42 

30

-

42 

55 

265 

386 

225 

97 

47 

42 

51

30

Aug.

47 

45 

45 

43 

42

43 

46 

46 

45 

45

56 

67 

49 

47 

46

45 

45 

62 

63 

56

53 

53 

52 

51 

57

60 

60 

68 

54 

56 

54

Mean

51.4 

62.4 

69.2

116

70.2 

87.9 

451 

533 

377 

152 

65.2 

51.3 

54.1

169

Sept.

53 

6O 

62

60 

57

53

52 

62 

a52 

a 53

53 

56 

56 

56 

54

52 

51 

53 

56 

57

57 

54 

53 

53 

52

51 

51 

51 

51 

51

Run-off in 

acre-feet

3,160 

3,710 

4,250

84,270

4,320 

4,880 

27,730 

31,720 

23,190 

9,040 

4,010 

3,160 

3,220

122,400

It Winter discharge measurement made on this day. 

 a Ho gage-height record; discharge computed on.basis of records for Agency Valley Reservoir and 

Malheur River near Drewsey.

It Stage-discharge relation affected by ics.

Hote.- Shifting-control method used Dec. 24 to Apr. 4.
MALHEUR RIVER BASIN 157

North Fork of Malheur River at Beulah, Oreg.

Location.- Staff gage, lat. 43°54', long. 118°09', In NEi sec. 22, T. 19 S., R. 37 E.,

 at Beulah, a quarter of a mile downstream from Agency Valley Dam and 12 miles northwest of Juntura.

Drainage area.- 420 square miles.

Records available.- January 1936 to September 1941. March 1909 to June 1912 and November 

1913 to July 1914, at site 6 miles downstream. June 1926 to December 1935, at site 

three-quarters of a mile downstream, below intakes of two canals with combined capacity 

of about 10 second-feet.

Extremes.- Maximum discharge observed during year, 940 second-feet Apr. 5, 6 (gage height, 

4.80 reet); no flow at times.

1909-12, 1913-14, 1926-41: Maximum discharge, 5,910 second-feet Mar. 20, 1910; 

minimum prior to construction of dam, 5 second-feet Dec. 28, 1910, Jan. 26, 27, 1911.

Remarks.- Records good except those for period Oct. 27 to Feb. 22, which are poor. Flow

 rlgulated by Agency Valley Reservoir (see p. 155 ). Small diversions above station for 

irrigation; practically entire summer flow is diverted below station and above Juntura.

Rating tables, water year 1940-41 (gage height, In feet, and discharge, In 

aecond-feet)

Oct. 1 to Dec. 19

0.2 

.4

.6

.8

1.6 

6

12

21

1.0 

1.2 

1.6 .8 

1.0 

1.3

Feb. 23 to Sept. 30

0.9

9.0

20

37

72

1.6 

2.0 

2.5 

3.0 

3.6

326

460

576

4.0 

4.6 

4.8

707 

S46 

940

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29

SO 

31

Oot.

24 

34 

34 

16 

16

3.6 

3.1 

1.6 

7.8

7.8

7.8 

7.8 

16 

16 

49

49 

70 

62 

62 

62

62 

62 

62 

27 

27

9 

0 

0 

0 

0 

0

HOT.

0 

0 

0 

14 

16

18 

> 1.0

>

Dec.

\

> 1.2

 1.3

t

Jan.

\

 1.0

1

Feb.

> 

 0.7

.7 

.8 

.S

7.0 

16 

16

Month

Dot 

Hoi

Dee

C

Jan 

Fat 

Max

Api 

Ma; 

Jun 

Jul 

Aug 

Sej

I

alendar year 194C ......................

Si::::::::::::::::::::::::::::::::::::

ater year 1940-41

Mar.

15 

19S 

2S3 

263 

283

324 

331 

355 

400 

456

432 

56S 

568 

568 

568

568 

56S 

6O2 

602 

661

628 

628 

628 

697 

692

592 

691 

691 

761 

S23 

761

Apr.

767 

446 

602 

676 

940

940 

811 

594 

671 

641

641 

633 

628 

623 

623

620 

612 

462 

304 

314

319 

326 

302 

319 

338

365 

358 

382 

38S 

276

Secondfoot-days

79S.3 

72.0 

38.7

46,941.5

31.0 

54.7 

16,064 

16,811 

13,069 

7,966 

11,540 

1,949 

1,468

68,881. 7

May

362 

676 

743 

707 

680

641 

650 

438 

438 

425

376 

375 

400 

425 

425

420 

405 

392 

370 

350

307 

326 

326 

326 

326

326 

326 

326 

326 

326 

326

Maximum

70 

18

1,360

16 

823 

940 

748 

376 

376 

290 

63

940

June

326 

290 

278 

231 

231

278 

266 

170 

125 

126

SO 

80 

129 

129 

213

238 

288 

324 

324 

324

324 

324 

324 

345 

345

375 

376 

376 

376 

376

July

376 

376 

376 

375 

376

376 

375 

376 

376 

375

376 

376 

376 

376 

376

376 

376 

376 

376 

375

375 

376 

375 

375 

376

376 

376 

375 

376 

376 

290

Hlnlmum

0 

0

0

16

278 

307 

60 

290 

47 

47

0

Aug.

290 

174 

106 

106 

47

47 

47 

47 

47 

47

47 

47 

47 

47 

47

47 

47 

47 

47 

47

47 

47 

47 

47 

47

47 

47 

47 

47 

49 

49

Mean

25.8 

2.40 

1.25

128

1.00 

1.95 

518 

527 

422 

266 

372 

62.9 

48.9

189

Sept.

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

53 

47 

47 

47

Run-off In 

acre-feet

1,680 

143 

77

93,100

61 

108 

31,860 

31,360 

26,920 

16,840 

22,690 

3,870 

2,910

136,600

Mote.- No gage-height record Oct. 27 to HOT. 3, HOT. 6 to Dec. IS, Dec. 20 to Feb. 22, Feb. 24; 

discharge computed on basis of 2 discharge measurements (Dec. 19, Feb. 23) and notes by gage ob-
158 PAYETTE RIVER BASIN

South Fork of Payette River at Lowman, Idaho

Location.- Staff gage, lat. 44°05', long. 115°37'30", In SWi sec. 27, T. 9 N., R. 7 E., 

hair a mile upstream from Rock Creek, half a mile west of Lowman post office, and 

four-fifths of a mile downstream from clear Creek.

Drainage area.- 456 square miles.

Records available.- May to September 1941.

Extremes.- Maximum discharge observed during period, 3,580 second-feet May 26 (gage 

 height, 4.02 feet); minimum observed, 347 second-feet Sept. 25-30 (gage height, 0.72 

foot).

Remarks.- Records good. No regulation. Several small diversions for Irrigation and 

placering, the return flow from which enters river above station. Gage read twice 

dally.

Rating table, May 10 to Sept. 30, 1941 (gaga height, In feet, and discharge, In seoond-feet) 

(Shifting-control method used July 6-24, Aug. 26-28)

0.7

.9

1.1

1.4

341

400

472

616

1.7 

2.0 

2,3 

2.6

808

1,045

1,320

1,620

3.0

3.4 

3.9

2,080

2,620

3,410

Discharge, in aeaond-fest, water year Ooteber 1940 to September 1941

Day

1 

2 

3 

4 

6

6

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oot. Nov. Dec. Jan.

Month

Oot 

HOT 

Dec

C

Jan 

Peb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

T

alendar year

ch. ........... .. .......

he perlod ................

Feb.

Seeondfoot-daya

46 ,191 

64,710 

22 ,612 

15,099 

11,235

-

Mar.

KajclmuHi

3,410 

2,480 

1,040 

707 

430

-

Apr. May

961

1,040 

1,730 

2,340 

2,210 

1,840

1,620 

1,730 

1,S40 

1,620 

1,620

1,620 

1,960 

2,340 

2,770 

3,920

3,410 

3,240 

2,620 

2,340 

2,210 

2,210

Minimum

961 

1,090 

611 

407 

347

-

June

2,080 

1,960 

2,080 

2,080 

1,960

1,960 

2,080 

2,210 

1,960 

1,840

1,960 

1,960 

2,210 

2,480 

2,310

2,080 

1,960 

1.S40 

2,080 

1,840

1,620 

1,620 

1,620 

1,620 

1,420

1,320 

1,270 

1,220 

1,180 

1,090

Mean

2,100 

1,824 

729 

487 

374

-

July

1,040 

1,040 

1,000 

1,000 

961

922 

882 

882 

845 

808

774 

774 

739 

739 

707

669 

667 

634 

634 

611

596 

S84 

663 

663 

663

628 

696 

690 

663 

639 

611

Per 

square 

 lie

4.61 

4.00 

1.60 

1.07 

.620

-

Aug.

606 

489 

481 

468 

461

438 

434 

438 

506 

489

498 

707 

663 

502 

486

489 

472 

584 

684 

626

616 

494 

476 

472 

457

445 

449 

434 

424 

417 

407

Sept.

391 

417 

420 

403 

394

388 

378 

375 

372 

366

361 

431 

394 

378 

375

376 

358 

366 

384 

378

369 

363 

368 

366 

349

347 

' 347 

347 

349 

347

Run-off

Inches Acre-feet

3.77 91,620 

4.46 108,600 

1.84 44,860 

1,23 39,960 

.91 22,280

297,200
PATfETTE RIVER BASIN 159

South Fork of Payette River near Garden Valley, Idaho

Location.- Water-stage recorder, lat. 44°04', long. 115°56', In sec. 1, T. 8 N., R. 4 E., 

 at Garden Valley ranger station, 300 feet upstream from Station Creek, 2.7 miles southeast of Garden Valley, and 5.9 miles upstream from Middle Fork of Payette River.

Drainage area.- 779 square miles.

Records available.- May 1921 to September 1941.

Average discharge.- 17 years (1924-41), 1,146 second-feet.

Extremes.- Maximum dlschargs during year, 4,540 second-feet May 27 (gage height, 5.02 feet); 

minimum dally, 250 second-feet Dec. 13, 14.

1921-41: Maximum discharge observed, 10,600 second-feet May 26, 192S (gage height, 

8.0 feet): minimum discharge, 75 second-feet Dec. 15, 1935, Jan. 26, 1936 (gage height, 

0.70 foot), from rating curve extended below 280 second-feet; minimum dally, 217 

second-feet Jan. 26, 1936.

Remarks.- Records excellent except those for periods of Ice effect or no gage-height record, 

wnicn are good. Few diversions above station. Since Nov. 2, 1930, flow has been 

regulated by Deadwood Reservoir (see p. 165 ). Sltght regulation by Grimes Pass power 

plant.

Rating table, water year 1940-41, except periods of ice effect (gage height, in feet, and 

discharge, in,second-feet)

1.2 225 2.4 1,010 3.S 2,630 

1.5 375 2.7 1,290 4.2 3,200 

1.8 555 3.0 1,610 4.6 3,840 

2.1 765 3.4 2,100 5.0 4,640

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

662 

705 

901 

705 

634

588 

648 

542 

522 

503

610 

490 

478 

478 

472

460 

464 

442 

436 

430

424 

607 

648 

669 

909

789 

765 

766 

760 

750 

758

Nov.

765 

845 

677 

813 

765

765 

568 

594 

68S 

54S

522 

466 

386 

448 

510

*603 

516 

636 

490 

460

490 

430 

392 

442 

503

442 

442 

466 

600 

620

Dec.

636 

510 

496 

496 

490

496 

478 

460 

466 

376

353 

b300 

b250 

b260 

b500

b760 

b776 

bSOO 

b775 

750

742 

735 

' 720 

620 

490

454 

496 

472 

424 

448 

442

Jan.

364 

b325 

b300 

MOO 

442

454 

448 

419 

397 

386

3SO 

402 

402 

*448 

430

414 

402 

408 

408 

408

408 

408 

430 

402 

430

460 

414 

380 

380 

397 

402

Feb.

424 

448 

414 

397 

402

430 

47S 

442 

442 

464

484 

522 

478 

460 

442

424 

414 

460 

448 

430

430 

454 

478 

503 

503

460 

460 

478

Month

Dot 

No's 

Dec

C

Jar 

Pel 

Mar 

Apr 

MaS 

Jur 

Ju3 

Au( 

Sep

11

alendar year 1940... ...................

ater year 1940-4

Mar.

562 

627 

607 

562 

566

536 

529 

536 

562 

655

568 

562 

562 

516 

516

536 

562 

655 

676 

683

64S 

669 

662 

648 

662

720 

773 

829 

693 

993 

993

Apr.

1

I

1 

1

1

1

1 

1 

1 

1 

1

1 

1

1 

1

i

1 

1 

1

Secondfoot -days

18,794 

16,792 

16,349

446,250

12,548 

12,659 

19,957 

33,300 

84,630 

85,130 

34,230 

22,660 

25,439

382,486

010 

080 

150 

060 

100

020 

976 

950 

959 

060

060 

050 

090 

090 

150

100 

050 

9S4 

934 

909

909 

925 

98* 

070 

150

240 

340 

500 

610 

790

May

1,970 

1,970 

2,100 

2,230 

2,300

2,160 

1,970 

1,910 

1,850 

1,S50

2,040 

2,700 

3,510 

3,430 

2,980

2,630 

2,560 

2,700 

2,490 

2,360

2,360 

2,630 

3,050 

3,430 

3,670

4,010 

4,270 

3,670 

3,280 

3,200 

3,350

Maximum

909 

877 

800

4,450

460 

522 

993 

1,790 

4,270 

3,590 

1,610 

1,050 

976

4,270

June

3,430 

3,200 

3,280 

3,360 

3,280

3,200 

3,280 

3,690 

3,350 

3,120

3,050 

3,120 

3,280 

3,430 

3,280

3,050 

2,840 

2,910 

3,120 

2,910

2,630 

2,420 

2,360 

2,300 

2,160

1,970 

1,910 

1,850 

1,790 

1,670

July

1,610 

1,500 

1,500 

1,440 

1,390

1,340 

1,290 

1,240 

1,200 

1,150

1,150 

1,240 

1,150 

1,150 

al.100

al,060 

al,020 

a900 

a950 

a950

al,050 

al,100 

al.100 

1,030 

1,000

885 

877 

813 

735 

669 

641

Minimum

424 

386 

250

250

300 

397 

516 

909 

1,850 

1,670 

641 

594 

683

250

Aug.

69S 

S45 

768 

594 

641

742 

959 

698 

676 

712

773 

1,050 

S85 

641 

600

765 

676 

S21 

728 

690

648 

607 

594 

669 

669

669 

669 

662 

750 

821 

950

Mean

606 

560 

627

1,219

405 

452 

644 

1,110 

2,730 

2,808 

1,104 

731 

848

1,04S

Sept.

942 

959 

976 

"960 

909

885 

837 

837 

829 

837

869 

934 

917 

901 

909

917 

909 

SS5 

877 

893

877 

8S3 

846 

728 

683

683 

683

683 

712 

720

Run-off In 

acre-feet

37,280 

33,310 

32,430

8S5, 100

24,890 

25,110 

39,680 

66,050 

167,900 

168,900 

67,890 

44,950 

50,460

758,800

# Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of records for Deadwood River near Lowman, 

South Pork of Payette River near Banks, Payette River near Horseshoe Bend, and weather records, 

b Stage-discharge relation affected by ice.
160 PAYETTE RIVER BASIN 

South Fork of Payette River near Banks, Idaho

Location.- Water-stage recorder, lat. 44°05 1 30", long. 116°06', In sec. 28, T. 9 N., R. 3 

E., 1 mile upstream from North Fork of Payette River and 14 miles northeast of Banks. 

Datum of gage Is 2,812.00 feet above mean sea level.

Drainage area.- 1,200 square miles.

Records available.- August 1921 to September 1941.

Average discharge.- 20 years, 1,537 second-feet.

Extremes.- Maximum discharge during year, 5,820 second-feet May 27 (gage height, 6.41 

feet); minimum dally, 3oO second-feet Dec. 13, 14.

1921-41: Maximum discharge, 13,800 second-feet May 17, 1927 (gage height, 10.6 

feet, from floodmarks); minimum, about 225 second-feet Dec. 15, 1935, Jan. 26, 1936, 

and Dec. 26, 1939.

Remarks.- Records excellent except those for periods of Ice effect, which are good, 

small diversions above station for Irrigation. Since Nov. 2, 1930, flow has been 

regulated by Deadwood Reservoir (see p. 165 ). Slight regulation by (Jrlmes Pass power 

plant.

Rating table, water year 1940-41, except periods of ioe effect (gage height, In feet, 

and discharge, in second-feet)

0.1 305 2.2 1,510 4.6 3,630 

.4 435 2.6 1,810 6.0 4,070 

.7 585 3.0 2,135 6.4 4,540 

1.0 750 3.4 2,485 6.8 5,040 

1.4 9S5 3.8 2,845 6.2 5,560 

1.8 1,235 4.2 3,230 6.6 6,100

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13

fe

16 

17 

18 

19 

20

31 

22 

33 

24 

26

26

27 

SB 

29 

30 

31

Oct.

SOS 

835 

1,080 

895 

778

728 

684 

668 

656 

629

629 

612 

602 

590 

580

580

570 

560 

660 

560

655 

717 

778 

805 

1,200

1,020 

925 

925 

S95 

925 

925

Nov.

955 

1,080 

1,170 

1,040 

985

985 

805 

865 

835 

778

734 

668 

510 

590 

 673

673 

706 

744 

668 

607

666 

590 

505 

570 

678

596 

607 

629 

805 

925

Dec.

778 

722 

706 

700 

684

700 

668 

640 

646 

636

412 

b375 

bSBO 

bSBO 

b600

b900 

bl.OOO 

bl.OOO 

bl.OOO 

b950

926

925 

986 

895 

805

712 

835 

778 

678 

690 

678

Jan.

570 

445 

b460 

b500 

b650

678 

656 

629 

580 

560

570 

565 

585 

*640 

629

596 

580 

586 

590 

596

596 

602 

624 

596 

662

750 

690 

612 

590 

616 

602

Feb.

640 

668 

612 

585 

580

612 

728 

684 

673 

700

778 

895 

805 

750 

722

684 

662 

706 

700 

684

690 

750 

805 

895 

925

835 

805 

835

Month

Oet 

Non 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

JUK 

Jul

Aug

Sep 

fl ater year 1940-4 1......................

Mar.

985 

1,240 

1,170 

1,080 

1,040

1,020 

956 

985 

985 

985

985 

986 

956 

896 

865

395 

925 

1,100 

1,140 

1,140

1,100 

1,140 

1,100 

1,100 

1,100

1,200 

1,300 

1,400 

1,510 

1,810 

1,770

Apr.

1 

1 

2 

1 

2

1 

1 

1 

1 

1

1 

1

1

1 

1

1 

1 

1 

1

1

1

1 

1

1 

1

2 

2 

2 

2 

2

Secondfoot -days

23,271 

22,632 

22,622

627,521

18,596 

20,408 

34,860 

56,630 

120,500 

106,700 

42,025 

27,840 

29,495

526,579

,810 

,930 

,050 

,930 

,060

,890 

,770 

,690 

,690 

,890

,890 

,860 

,890 

,930 

,970

,890 

,770 

,660 

,640 

,510

,610 

,510 

,660 

,770 

,890

,010 

,140 

,300 

,480 

,760

May

2,940 

2,940 

3,230 

3,430 

3,430

3,330

2,940 

2,940 

2,940 

2,840

3,130 

3,850 

6,040 

6,170 

4,540

3,960 

3,860 

3,860 

3,530 

3,330

3,330 

3,530 

4,070 

4,66C 

6,040

5,170 

5,660 

4,910 

4,300 

4,300 

4,420

Maximum

1,200 

1,170 

1,000

6,380

760 

925 

1,810 

2,760 

5,560 

4,780 

2,010 

1,240 

1,140

5,560

June

4,420 

4,180 

4,070 

4,180 

4,070

3,960 

4,180 

4,780 

4,420 

4,070

3,860 

3,960

4,070 

4,180 

3,960

3,740 

3,530 

3,530 

3,850 

3,630

3,230 

3,040 

2,840 

2,760 

2,660

2,480 

2,400 

2, ZOO 

2,220 

2,140 

_

July

2,010 

1,930 

1,860 

1,810 

1,730

1,660 

1,580 

1,540 

1,480 

1,400

1,370 

1,610 

1,400 

1,370 

1,340

1,270 

1,240 

1,100 

1,140 

1,140

1,240 

1,370 

1,340 

1,200 

1,170

1,080 

1,080 

1,020 

955 

865 

835

Minimum

565 

505 

350

360

446 

580 

865 

1,510 

2,840 

2,140 

836 

778 

805

350

Aug.

836 

1,080 

926 

778 

778

835 

1,140 

866 

836 

866

926 

1,240 

1,100 

836

778

896 

836 

1,100 

965

925

835 

TVS 

778 

805 

836

835 

835 

805 

865 

925 

1,080

Mean

761 

764 

730

1,715

600 

729 

1,185 

1,888 

3,887 

3,567 

1,356 

898 

983

1,440

Sept.

1,080 

1,080 

1,140 

1,100 

1,040

1,040 

986 

966 

966 

965

985 

1,080 

1,040 

1,020 

1,040

1,080 

1,040 

1,020 

986 

1,040

1,020 

986 

985

895 

835

83S 

806 

806 

835 

836

Run-off in 

aore-feet

46,150 

44,890 

44,870

1,246,000

36,880 

40,480 

69,140 

112,300 

239,000 

211,600 

83,360 

55,220 

58,600

1,042,000

# Winter discharge measurement made on this date, 

b Stage-discharge relation affected by ice.
PAYETTE RIVER BASIN 161

Payette River near Horseshoe Bend, Idaho

Location.- Water-stage recorder, lat. 43°56', long. 116°11'30", in SWiSWi sec. 14, T. 7

 H., R. 2 E., 100 feet east of tracks of Idaho Northern branch of Oregon Short Line 

R. R. and l* miles north of Horseshoe Bend.

Drainage area.- 2,230 square miles.

Records available.- November 1912 to September 1916, July 1919 to September 1941.

February 1906 to November 1912 at site 2 miles upstream, in sec. 2, T. 7 N., R. 2 E.

Average discharge.- 30 years (1907-15, 1919-41), 2,953 second-feet.

Extremes.- Maximum discharge during year, 10,300 second-feet May 27 (gage height, 6.22 

feet); minimum, 545 second-feet Dec. 14 (gage height, 0.70 foot).

1906-16, 1919-41: Maximum discharge, 22,100 second-feet June 9, 1921 (gage height, 

9.57 feet); minimum, 350 second-feet Dec. 17, 1935 (gage height, 0.26 foot), from 

rating curve extended below 600 second-feet.

Remarks.- Records excellent. Flow regulated by Deadwood Reservoir (see p. 105)» Payette

 Lake (see p. 168), and Lake Fork Reservoir (see p. 173 ) Several diversions from 

tributaries above station for irrigation.

Rating table, water 1940-41 (gage height, in feet, and discharge, in second-feet)

0.7 

1.0 

1.3 

1.6

546

770

l.OSO

1,330

2.0 

2.4 

2.8

3.2

1,790

8,310

2,910

3,670

3.6 

4.0 

4.4 

4.8

4,310

6,090

6,920

6,810

6.2 

6.6 

6.0 

6.4

7,740

8,720

9,740

10,890

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

50 

51

Oct.

1,210 

1,260 

1,650 

1,490 

1,300

1,260 

1,160 

1,090 

1,060 

1,000

967 

968 

951 

904 

904

904 

S68 

842 

826 

834

S60 

976 

1,100 

1,160 

1,630

1,730 

1,600 

1,610 

1,410 

1,410 

1,440

NOT.

1,620 

1,770 

1,980 

1,910 

1,740

1,660 

1,610 

1,620 

1,730 

1,650

1,630 

1,570 

1,040 

967 

1,160

1,280 

1,360 

1,460 

1,330 

1,260

1,260 

1,160 

1,070 

1,080 

1,210

1,140 

1,130 

1,160 

1,400 

1.S6O

Dec.

1,620 

1,470 

1,340 

1,360 

1,320

1,320 

1,290 

1,230 

1,210 

1,060

770 

662 

616 

601 

S16

1,100 

1,260 

1,470 

1,620 

1,620

1,610 

1,620 

1,690 

1,620 

1,440

1,270 

1,520 

1,270 

1,120 

1,140 

1,110

Jan.

967 

786 

714 

818 

1,030

1,070 

1,060 

1,010 

940 

904

886 

869 

886 

976 

976

931 

915 

915 

922 

951

940 

968 

994 

966 

1,070

1,200 

1,100 

1,010 

986 

1,010 

1,000

Feb.

1,040 

1,080 

1,040 

986 

986

1,010 

1,160 

1,110 

1,100 

1,160

1,29O 

1,450 

1,340 

1,240 

1,200

1,160 

1,130 

1,160 

1,160 

1,160

1,160 

1,230 

1,510 

1,500 

1,600

1,570 

1,520 

1,570

Month

Dot 

Non 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

tat 

Set

fl

alendar year 194o... ...................

Fater year 1940-4

Mar.

1,610 

1,980 

2,100 

2,100 

2,100

2,040 

1,980 

1,980 

2,040 

2,040

1,980 

1,980 

1,910 

1,860 

1,790

1,790 

1,910 

2,310 

2,600 

2,600

2,620 

2,620 

2,450 

2,3SO 

2,620

2,830 

5,070 

5,520 

a5,820 

b.4,510 

4,220

Apr.

4,510 

4,600 

4,790 

4,690 

6,090

4,790 

4,220 

5,950 

5,930 

4,400

4,790 

4,600 

4,400 

4,400 

4,500

4,510 

3,930 

5,670 

5,520 

3,160

5,070 

5,070 

5,250 

5,400 

5,660

3,840 

4,020 

4,400 

4,690 

6,090

Secondfoot-days

36,034 

42,217 

3S,335

1,145,661

29,744 

55,660 

74,650 

J.23.990 

246,610 

§00,600 

64,890 

47,600 

59,970

977,088

Hay

6,600 

6,600 

6,050 

6,360 

6,680

6,680 

6,140 

6,360 

6,360 

6,140

6,360 

7,270 

8,970 

9,740 

9,480

9,480 

9,220 

8,970 

S,470 

7,740

7,500 

7,270 

7,740 

3,470 

9,220

9,480 

10,500 

9,740 

9,480 

9,4SO 

9,4SO

Maximum

1,750 

1,9SO 

1,620

12,900

1,200 

1,600 

4,310 

5,090 

10,500 

9,220 

3,400 

1,980 

1,670

10,500

June

9,220 

8,720 

8,470 

8,470 

8,220

7,980 

8,470 

9,220 

S.720 

7,980

7,500 

7,270 

6,810 

6,580 

6,360

6,140 

6,S20 

6,820 

6,580 

6,810

6,S10 

6,810 

6,360 

6,600 

4,890

4,220 

3,840 

5,760 

5,660 

5,400

July

3,400 

3,320 

3,160

2,990 

2,750

2,680 

2,520 

2,310 

2,240 

2,100

1,980 

2,040 

1,980 

1,860 

1,790

1,740 

1,780 

1,680 

1,670 

1,670

1,720 

1,860 

1,850 

1,720 

1,670

1,740 

1,790 

1,770 

1,7SO 

1,710 

1,660

Minimum

826

967 

601

601

714 

986 

1,610 

5,070 

6,600 

5,400 

1,660 

1,290 

1,090

601

Aug.

1,620 

1,760 

1,680 

1,540 

1,480

1,620 

1,850 

1,690 

1,620 

1,540

1,610 

1,980 

1,910 

1,650 

1,460

1,600 

1,460 

1,780 

1,600 

1,640

1,440 

1,570 

1,520 

1,530 

1,550

1,550 

1,320 

1,290 

1,560 

1,400 

1,620

Mean

1,162 

1,407 

1,257

5,126

969 

1,202 

2,408 

4,155 

7,920 

6,683 

2,095 

1,655 

1,332

2,677

Sept.

1,620 

1,620 

1,670 

1,540 

1,480

1,450 

1,370 

1,350 

1,340 

1,330

1,340 

1,410 

1,380 

1,570 

1,570

1,420 

1,400 

1,550 

1,510 

1,340

1,330 

1,510 

1,310 

1,230 

1,130

1,110 

1,090 

1,090 

1,100 

1,110

Run-off in 

acre-feet

71,470 

85,740 

76,050

2,268,000

69,000 

66,740 

148,100 

246,900 

487,000 

597,700 

128,700 

94,410 

79,280

1,938,000

a Ho gage-height record) discharge interpolated, 

h Computed from staff-gage reading.
162 PAYETTE RIVER BASIN 

Payette River near Ernmett, Idaho

Location.- Water-stage recorder, lat. 43°56', long. 116°27', in sec. 22, T. 7 K., R. 1 W.,

 three-eighths of a mile downstream from Black Canyon Dam and 5 miles northeast of 

Emmett.

Records available.- June 1925 to September 1941. 

Average discharge.- 16 years, 2,710 second-feet.

Extremes.- Maximum discharge during year, 13,900 second-feet May 13 (gage height, 9.70

 feet); minimum, 6 second-feet Dec. 29 (gage height, 1.23 feet), from rating curve extended below 200 second-feet.

1925-41: Maximum discharge, 22,800 second-feet May 1, 1938 (gage height, 12.90 

feet); minimum, 2 second-feet (estimated) Jan. 13, 1938, when gates In dam were closed.

Remarks.- Records good. Diversions above station for irrigation. Flow regulated by 

diversion at and operation of gates in Black Canyon Dam and by Deadwood Reservoir 

(see p. 165), Payette Lake (see p. 168), and Lake Fork Reservoir (see p. 173).

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

1,060 

1,150 

1,280 

1,530 

1,210

1,120 

1,150 

1,010 

981 

981

915 

840 860' 

850 

SOO

780 

882 

S60 

S50 

893

382 

926 

1,150 

1,140 

1,540

2,030 

1,680 

1,610 

1,530 

1,470 

1,440

Nov.

1,520 

1,900 

2,160 

2,160 

1,900

1,S40 

1,580 

1,600 

1,900 

1,710

1,610 

1,600 

1,370 

1,050 

1,010

1,150 

1,440 

1,540 

1,520 

1,340

1,190 

1,200 

1,280 

1,400 

1,520

1,540 

1,380 

1,410 

1,340 

2,360

Dec.

2,160 

1,960 

1,640 

1,680 

1,770

1,620 

1,580 

1,580 

1,600 

1,470

1,220 

871 

820 

S40 

aSOO

al,200 

al,300 

al,400 

al,500 

al,600

1,610 

1,640 

1,640 

1,650 

1,710

1,720 

1,710 

1,S40 

1,090 

1,110 

1,400

Jan.

1,220 

1,150 

94S 

860 

1,020

1,190 

1,190 

1,190 

1,080 

970

959 

970 

970 

1,070 

1,190

1,080 

1,090 

1,060 

1,090 

1,150

1,170 

1,170 

1,190 

1,290 

1,700

2,100 

1,960 

1,530 

1,270 

1,210 

1,180

Feb.

1,180 

1,220 

1,300 

1,090 

1,110

1,100 

1,260 

1,520 

1,350 

1,310

1,500 

1,900 

1,900 

1,710 

1,560

1,460 

1,070 

770 

770 

780

790 

790 

800 

830 

1,740

1,960 

1,730 

1,900

Month

Oct 

NOT

Dec 

C

Jar 

Pet 

Mar 

Api 

Maj 

JUT 

Ju] 

Aug 

Sep

VI

11. ....................................

ater year 1940-4

liar.

2,100 

2,690 

2,970 

2,690 

2,760

2,430 

2,480 

2,360 

2,420 

2,430

2,360 

2,360 

2,220 

2,220 

2,100

2,030 

2,030 

2,480 

3,040 

3,110

2,900 

2,7,60 

2,830 

2,690 

2,620

2,970 

3,250 

3,550 

3,7SO 

4,660 

4,830

Apr.

4,490 

4,660 

5,000 

5,000 

5,520

5,170 

4,490 

4,090 

4,170 

4,660

5,520 

4,830 

4,580 

4,660 

4,660

4,660 

4,490 

4,170 

3,480 

3,110

2,970 

2,900 

2,970 

3,180 

3,250

3,550 

3,620 

2,830 

3,780 

4,490

Secondfoot-days

35,400 

47,020 

45,731

1,172,118

37,207 

36,400 

86,160 

124,950 

237,810 

197,240 

45,480 

28,015 

25,430

946,843

May

5,170 

5,340 

5,700 

6,240 

6,430

6,430 

6,060 

5,880 

6,060 

5,880

5,880 

6,810 

8,790 

9,420 

9,420

9,210 

9,000 

8,790 

8,180 

7,580

7,000 

7,190 

7,380 

8,180 

9,210

9,000 

10,100 

9,640 

9,210 

9,210 

9,420

Maximum

2,030 

2,360 

2,160

16,200

2,100 

1,960 

4,330 

5,520 

10,100 

9,860 

2,970 

1,360 

1,000

10,100

June

9,000 

8,580 

8,180 

8,380 

8,180

7,780 

8,380 

9,860 

9,000 

8,180

7,580 

7,380 

6,810 

6,620 

6,240

6,240 

6,060 

5,340 

6,620 

7,000

6,620 

6,620 

5,880 

5,340 

4,580

3,850 

3,400 

3,320 

3,250 

2,970

July

2,970 

2,830 

2,620 

2,480 

2,220

1,960 

1,840 

1,540 

1,480 

1,360

1,160 

1,090 

1,220 

1,120 

1,060

1,000 

1,000 

992 

959 

970

959 

959 

981 

992 

1,050

1,770 

1,840 

1,640 

1,300 

1,170 

948

Minimum

780 

1,010 

800

710

860 

770 

2,030 

2,830 

5,170 

2,970 

948 

720 

740

720

Aug.

926 

1,010 

1,110 

893 

860

992 

810 

871 

860 

893

1,050 

840 

1,360 

1,060 

750

780 

915 

1,240 

1,000 

1,080

850 

860 

770 

760 

780

740 

720 

790 

770 

760 

915

Mean

1,142 

1,567 

1,475

3,203

1,200 

1,300 

2,779 

4,165 

7,671 

6,575 

1,467 

904 

848

2,594

Sept.

1,000 

970 

992 

981 

981

882

840 

850 

840 

820

810 

810 

810 

810 

820

830 

860 

871 

860 

850

840 

860 

871 

882 

740

740 

740 

750 

760 

760

Run-off In 

acre-feet

70,210 

93,260 

90,710

2,325,000

73,800 

72,200 

170,900 

247,800 

471,700 

391,200 

90,210 

55,570 

50,440

1,878,000

a Incomplete or no gage-height record; discharge computed on basis of partial gage-height record, 

recorded range of stage, and records for stations near Horseshoe Bend and near Payette.
PAYETTE RIVER BASIN 163

Payette River near Payette, Idaho

Location.- Water-stage recorder, lat. 44°02'30", long. 116°55'30", In SWi sec. 10, T. 8 

rJ., R. 5 W., at highway bridge, If miles south of Payette.

Records available.- August 1935 to September 1941. 

at site £ miles downstream.

January 1895 to July 1897 (Incomplete)

Extremes.- Maximum discharge during year, 10,300 second-feet June 8 (gage height, 8.57 

i*eet); minimum, 433 second-feet July 21 (gage height, 3.23 feet).

1935-41: Maximum discharge observed, 23,400 second-feet May 2, 1938 (gage height, 

11.90 feet); minimum, 180 second-feet Oct. 13, 20, 1935 (gage height, 2.04 feet).

Remarks.- Records good. Many diversions above station for Irrigation, 

also by Black Canyon Dam and by reservoirs on tributary streams.

Flow regulated

Rating table, water year 1940-41 (gage height, in feet, and discharge, 

in second-feet)

3.2 415 4.S 1,640 6.4 4,640 

3.4 540 4.8 2,030 6.8 5,460 

3.6 695 5.1 2,450 7.2 6,370 

3.S 870 5.4 2,900 7.6 7,330 

4.0 1,060 5.7 3,380 8.0 8,500 

4.2 1,230 6.0 3,900 8.4 9,700

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

S

6

7

e

9 

10

11

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

31

Oct.

1,040 

1,300 

1,520 

1,640 

1,700

1,360 

1,410 

1,350 

1,200 

1,180

1,150 

1,070 

980 

- 938 

915

879 

870 

9SO 

942 

951

980 

980 

1,050 

1,330 

1,580

2,240 

2,170 

1,960 

1,900 

1,900 

1,840

Nov.

1,340 

2,450 

2,750 

2,600 

2,380

2,240 

2,030 

2,030 

2,240 

2,170

1,960 

1,900 

1,840 

1,540 

1,330

1,320 

1,570 

1,840 

1,840 

1,700

1,570 

1,460 

1,480 

1,630 

1,700

1,840 

1,640 

1,700 

2,030 

2,680

Deo.

2,600 

2,310 

2,100 

1,960 

2,030

1,960 

1,900 

1,900 

1,840 

1,900

1,640 

1,290 

1,100 

1,130 

1,140

1,340 

1,500 

1,620 

1,770 

1,840

1,900 

1,900 

1,900 

1,960 

1,960

2,100 

2,170 

2,240 

1,960 

1,150 

1,700

Jan.

1,620 

1,350 

1,400 

1,100 

1,160

1,390 

1,450 

1,410 

1,420 

1,250

1,200 

1,190 

1,200 

1,260 

1,560

1,460 

1,520 

1,350 

1,390 

1,560

1,590 

1,560 

1,570 

1,640 

2,170

2,900 

2,450 

2,170 

1,700 

1,540 

1,510

Feb.

1,450 

1,500 

1,560 

1,440 

1,350

1,380 

1,510 

1,770 

1,340 

1,700

2,750 

2,310 

2,450 

2,170 

1,960

1,840 

1,770 

1,120 

1,060 

1,070

1,070 

1,100 

1,130 

1,290 

1,700

2,380 

2,100 

1,960

Month

Oet 

Not 

Dec

C

Jar 

Pet 

Max 

Apr 

Maj 

Jui 

Ju] 

Aug 

Sej

1

alendar year 19' 10. .....................

ater year 1940-4

liar.

2,520 

2,750 

3,380 

3,060 

2,980-

2,900 

2,750 

2,750 

2,600 

2,750

2,600 

2,600 

2,450 

2,450 

2,310

2,170 

2,240 

2,380 

3,060 

3,220

3,140 

2,980 

2,930 

2,900 

2,680

2,900 

3,220 

3,460 

3,720 

4,260 

4,840

Apr.

4,640 

4,640 

4,840 

5,140 

5,460

5,570 

4,840 

4,170 

4,080 

4,360

5,680 

5,250 

4,840 

4,640 

4,640

4,740 

4,540 

4,260 

3,640 

2,900

2,750 

2,450 

2,380 

2,450 

2,600

2,600 

2,900 

2,750 

2,450 

3,460

Secondfoot-days

41,300 

57,300 

55,810

1,181,574

47,840 

46,730 

91,000 

119,560 

225,210 

192,980 

30,070 

19,237 

22,122

949,159

May

4,360 

4,740 

4,940 

5,660 

6,130

6,610 

6,130 

5,790 

6,130 

5,790

5,680 

6,130 

7,930 

9,390 

9,700

9,090 

8,790 

8,500 

3,210 

7,120

6,610 

6,370 

6,370 

6,860 

8,210

8,500 

9,090 

9,390 

9,090 

8,790 

9,090

Maximum

2,240 

2,750 

2,600

17,700

2,900 

2,750 

4,840 

5,680 

9,700 

9,700 

2,750 

897 

861

9,700

June

9,090 

8/600 

7,930 

7,930 

7,930

7,650 

8,210 

9,700 

9,390 

S,210

7,660 

7,120 

6,610 

6,370 

6,900

5,790 

5,460 

5,250 

6,130 

6,860

6,610 

6,370 

6,130 

5,360 

4,540

3,810 

3,300 

3,060 

3,220 

2,900

July

2,750 

2,600 

2,450 

2,240 

1,960

1,700 

1,440 

1,250 

960 

852

746 

608 

600 

647 

578

620 

501 

488 

501 

475

432 

475 

475 

475 

475

494 

562 

671 

671 

712 

712

Aug.

608 

570 

615 

631 

534

631 

555 

488 

482 

469

520 

695 

600 

852 

712

54S 

534 

671 

897 

780

780 

647 

639 

585 

570

608 

592 

570 

60S 

615 

631

Minimum Mean

870 1,332 

1,320 1,910 

1,100 1,800

520 3,228

1,100 1,543 

1,060 1,669 

2,170 2,936 

2,380 3,985 

4,360 7,265 

2,900 6,433 

475 970 

469 621 

615 737

469 2,600

Sept.

738 

834 

852 

861 

861

S43 

754 

746 

738 

S52

729 

720 

738 

729 

720

712 

738 

754 

738 

746

738 

712 

712 

720 

746

623 

615 

623 

615 

615

Run-off in 

acre-feet

81,920 

113,700 

110,700

2,344,000

94,890 

92,690 

180,500 

237,100 

446,700 

382,800 

59,640 

38,160 

43,880

1,883,000
164 PAYETTE RIVER BASIN

Clear Creek at Lowman, Idaho

Location.- Staff gage, lat. 44°05', long. 115°37', In SWiSEi sec. 27, T. 9 N., R. 7 E.,

 200 feet upstream from mouth and 350 feet downstream from highway bridge crossing Clear 

Creek at Lowman.

Drainage area.- 59.6 square miles. 

Records available.- May to September 1941.

Extremes.- Maximum discharge observed during period, 459 second-feet May 26 (gage height,

 4.66 feet); minimum observed, 34 second-feet Sept. 23, 24, 26, 30 (gage height, 2.16 

feet).

Remarks.- Records good. Feeder canal for small power plant diverts about 1 mile above

 gage; water is returned to creek above station except that used for Irrigation of small 

pasture adjacent to Lowman. Gage read twice daily.

Discharge, in second-feet, nater year Oetofcer 1940 to September 1941

Day

1 

£ 

8

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

50 

81

Oct. Uov. Deo. Jan.

Month

Got 

HOT 

Deo

c

Jan 

Peb 

Hap 

Apr 

May 

Jnn 

Jul 

Aug 

Sap

T

ember. ....................

alendar year

10-31 ....................

le perioa. ............

Peb.

Seoondfoot-days

-

6,466 

6,365 

2,166 

a>414 

1,120

-

Mar.

ff«TlTfflfflft

430 

300 

104 

57 

42

-

Apr.

-

Hay

1S8

215 

255 

312 

312 

266

277 

265 

255 

234 

246

246 

277 

288 

324 

324

430 

402 

388 

336 

384 

312

Minimal

188 

110 

52 

39 

34

-

June

300 

277 

£88 

277 

2S9

288

28S 

300 

277 

266

255 

255 

255 

246 

224

206 

188 

206 

206 

188

164 

149 

135 

135 

118

122 

122 

116 

116 

110

Mean

294 

212 

69.9 

45.6 

37.3

-

July

104 

99 

94 

89 

84

84 

64 

80 

80 

76

71 

7.1 

71 

67 

67

67 

63 

63 

62 

61

60 

58 

57 

56 

53

58 

62 

63 

56 

54 

52

Per 

square 

all*

4.93 

3.56 

1.17 

.765 

.626

-

Aug.

50 

49 

49 

46 

46

46 

46 

46 

47 

50

53 

57 

50 

47 

46

44 

43 

52 

48

47

44 

43 

42 

40 

40

42 

42 

40 

39 

40 

40

Sept,

38 

42 

42 

40 

39

39 

38 

38 

39 

38

37 

40 

39 

39 

38

38 

35 

35 

38 

. 38

37 

35 

35 

35 

35

34 

35 

35 

35 

34

Run-off

Inches Aors-feet

4.03 12,830 

3.97 12,620 

1.35 4,300 

.88 2,800 

.70 2,220

34,770
PAYETTE RIVER BASIN 

Deadwood Reservoir near Lowman, Idaho

166

Location.- Staff gage, lat. 44°18', long. 115°39', In SEi sec. 8, T. 11 N., R. 7 E., at 

 dam on Deadwood River, 15 miles north of Lovman. Datum of gage Is at mean sea level 

(levels by Bureau of Reclamation).

Drainage area.- 108 square miles.

Records available.- October 1935 to September 1941.

Extremes.- Maximum elevation observed during year, 5,335.6 feet June 8; minimum observed, 

5,305.5 feet NOV. 6.

1936-41: Maximum elevation observed, 5,336.6 feet June 9, 10, 1938; minimum observed, 5,260.1 feet Oct. 1, 1935.

Remarks.- Reservoir is formed by concrete arch dam, completed In 1930; storage began Nov. 

z, 1930. Reported capacity, 160,400 acre-feet between elevation 5,230.0 feet (minimum operating level because of fish protection, 27 feet' above sill of emergency gate 

in front of needle valve) and 5,334.0 feet (crest of spillway). Storage below elevation 5,230.0 feet about 1,500 acre-feet. Water is used to augment flow of Payette 

River at Black Canyon power plant near Emmett. During the late fall of 1936, Bureau 

of Reclamation cut a transmountaln canal to divert a small flow of water from a tributary of Johnson Creek In Salmon River Basin to Deadwood River Basin for supplemental 

storage In Deadwood Reservoir. Measurements of May 24, July 1, and Aug. 14, 1941, indicate flow In this canal of 32.9, 6.6, and 1.6 second-feet, respectively. Gage read 

once dally.

Cooperation.- Gage-height record furnished by Bureau of Reclamation.

Elevation, In feet, water year October 1940 to September 1941

D«y

i

2

3

4

e

6

7

8

9

10

11

12

IS

14

16

18

17

IB

19

80

SI

88

23

24

28

26

27

26

29

SO

51

Oct.

306.86

306.86

306.30

306.46

306.53

306.60

306.66

506.70

506.76

306.80

306.86

306.90

306.96

807.00

507.05

SOT. 10

S07.15

507.20

307.2*

S07.30

507.30

307.20

S07.00

505.81

306.90

306.80

506.66

306.60

306.36

306.20

506.06

Nov.

306.00

306.90

306.80

306.70

306.60

306.60

306. 60

306.70

306.76

306. SO

306.35

306.90

306.96

306.00

306.06

306.10

306-20

306.30

506.36

506.40

306.46

306.60

306.66

506.60

306.66

306.70

306.76

306.35

307.10

307-20

-

Dec.

307.25

307.30

307.40

307.46

307.50

307.60

307.66

S07.70

307.75

307.80

307.80

307.86

307.85

307.75

307.75

307.60

307.45

307.30

307.16

307.05

306.95

307 25

307.50

307.60

307.70

307.80

307.90

S07.95

308.00

308.06

308.10

Jan.

308. 10

SOS. 15

308.20

508.26

308.30

308.35

SOS. 45

SOS. 60

306.65

308.60

308.66

308.70

308.75

306.35

SOS. 95

309.10

309.20

309.30

309.35

309.40

309.45

309.45

309.50

309.66

309.60

309.65

309.65

309.65

309.70

309.70

309.70

Feb.

309.76

309.75

309.75

309.80

309.80

309.80

309.66

309.86

309.90

309.90

509.96

510.00

810.00

510.05

310.05

310.10

310.10

310.15

310.20

310.25

310.30

310.35

310.40

310.45

310.50

310.55

310.60

310.66

.

_

-

Mar.

310.70

310. SO

310.90

310.95

311.00

311.05

311.10

311.15

311.20

311.25

311.30

311.35

311.40

311.45

311.50

311.65

311.65

311.75

311.86

311.96

312.00

312.06

312.10

312.15

312.25

312.35

312.40

312.45

312.50

312.70

312.90

Apr.

313.10

313.40

313.60

313.80

314.00

314.20

314.40

314.50

314.60

314.70

314.90

315. 10

315.30

315.50

316.70

316.90

319.10

516.80

316.40

316.50

316.70

316.90

317.20

317.50

317.70

317.90

318.20

318.50

SIS. 90

319.30

-

"«T

319.66

320.00

320.65

321.10

321.60

322.00

322.45

382.90

323.30

323.60

324.00

824.60

325.30

326.10

326.80

327.40

527.90

328.40

388.90

329.40

329.90

330.40

330.90

331.58

332,20

338.90

333.70

334.30

334.70

335.00

,335.20

June

335.40

335.60

335.55

335.55

335.66

335.50

335.55

335.60

335.56

335.50

335.45

335.40

335.40

335.40

335.35

335.35

335.30

335.35

555.35

335.35

335.30

335.20

335.15

335.10

335.00

334.95

334.95

334.90

334.90

334.86

-

July

334.60

334.80

334. SO

334.75

334.75

334.70

334.70

334.66

334.60

334.50

334.60

334.45

334.35

334.30

334.20

334.10

334.00

334.05

334.00

333.95

333. SO

333.60

333.50

333.15

332.93

332.95

333.00

332.95

333.10

333.15

333.80

Aug.

333.20

333.10

333.06

333.10

333.10

333.00

338.80

338.70

338.70

332.70

332.60

338.60

332.60

338.64

338.70

338.60

338.60

338.66

338.75

332.36

338.90

333.00

333.05

333.00

332.95

338.90

332.90

338.90

338.79

338.65

338.40

Sept.

338.15

331.90

331.70

331.46

331.26

331.00

330.86

330.66

330.45

330.25

330.00

329.60

329.60

329.30

329.10

328.86

326.60

328.30

328.10

327.90

327.70

327.60

327.20

327.00

326.90

326. SO

326.70

386.50

326.30

326.10

-

Vote..- Add 5,000 feet to obtain elevations above mean sea level
166 PAYETTE RIVER BASIN

Deadwood River below Deadwood Reservoir, near Lowman, Idaho

Location.- Water-stage recorder, lat. 44°18', long. 115°39', in NEi sec. 17, T. 11 N., 

" R 7 ST., 300 feet upstream from Wilson Creek, a quarter of a mile downstream from

Deadwood Dam and lower end of Deadwood Basin, 15 miles north of Lowman, and IB miles

upstream from mouth.

Drainage area.- 108 square milee.

Records available.- October 1926 to September 1941.

Average discharge.- 14 years (1927-41), 176 second-feet.

Extremes.- Maximum discharge during year, 675 second-feet June 8 (gage height, 3.37 feet); 

minimum not determined, occurred when gates at dam were closed.

1926-41: Maximum discharge, 2,150 second-feet May 26, 1928 (gage height, 5.67 feet, 

site and datum then in use); small amount of leakage from reservoir for long periods 

during 1933-41 when gates in dam were closed.

Remarks.- Records good except those below 5 second-feet, which are fair, and those for 

Dec. 14-24, which are poor. Flow regulated since Nov. 2, 1930, by Deadwood Reservoir 

(see p. 165 ). During late fall of 1936 the Bureau of Reclamation cut an interraountaln 

canal to divert a small flow from a tributary of Johnson Creek to Deadwood River Basin 

for supplemental storage in Deadwood Reservoir. Measurements of May 24, July 1, and 

August 14, 1941, indicate flow in this canal of 32.9, 6.6, and 1.6 second-feet, 

respectively.

Cooperation.- Gage-height record furnished by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

8 

9 

10

11 

18 

IS 

14 

IS

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oot.

110 

91 

36 

a4 

h4

a4 

a4 

a4 

a4 

a4

a4 

a4 

a4 

a4 

a4

a4 

a4 

a4 

a4 

a4

h!41 

h223 

h231 

h231 

h234

h229 

h229 

h229 

h229 

h229 

h229

Nov.

h234 

h234 

h234 

h234 

h234

h90

» a3

>

Dec.

"V

> a3

d!70 

d270

3270 

d270 

d270 

d275 

d275

d275 

d275 

dl60 

s. d35

}"

Jan.

' a3

>

Feb.

\

 «3

i

Month

Oot 

Not 

Dec

C

Jar 

Fel 

Max 

Api 

Jtaj 

Jui

Ju3 

Auj 

Sej

1rater year 1940-4 L

liar.

 aS

,

Apr.

>

. a3 

/

Seoondfoot-daya

2,738 

1,332 

2,696

64,380

93 

84 

93 

90 

1,266 

16,254 

6,648 

4,082 

11,268

46,543

May

 >

 a3

' hS 

a3

a3 

6 

85 

231 

368 

499

Maximum

234 

234

275

1,020

499 

675 

4S2 

432 

449

675

June

585 

602 

620 

638

638

620 

638 

675 

656 

620

585 

668 

568 

650 

633

516 

482 

482 

616 

516

482 

449 

416 

384 

363

335 

323 

311

300 

294

July

277 

261 

247 

236 

223

206 

196 

187 

174 

166

272 

300 

272 

244 

226

213 

144 

146 

ISO 

268

416 

4S2 

400 

332 

314

113 

SI 

29 

a4 

a4 

46

Minimum

4

-

294 

4 

4 

250

-

Aug.

174 

17S 

64 

54 

110

389 

250 

110 

91 

144

169 

176 

73 

h4 

113

114 

86 

38 

8 

6

a4 

a4 

76 

113 

115

117 

117 

166 

234 

365 

432

Mean

S8.3 

III?

176

3.0 

3.0 

3.0 

3.0 

40.S 

508 

214 

132 

376

125

Sept.

432 

432 

432

384 

384

353 

341

347 

350 

384

416 

432 

432 

432 

449

449 

449 

432 

416 

416

416 

416 

366 

250 

250

250 

260

274 

288 

347

Run-off in 

acre-feet

6,430 

2,640 

5,150

127,700

1S4 

167 

1S4 

179 

2,510 

30,260 

13,190 

8,100 

22,350

90,340

a Ho gage-height record^; discharge made up of leakage and seepage only 'J& computed on the basis 

of one discharge measurement, weather records, and Information furnished by observer.

d Doubtful gage-height record; discharge computed on basis of weather records, reservoir records, 

and records for station near Lowman and other Fayette River stations*

h Computed from staff-gage readings.
PAYETTE RIVER BASIN 

Deadwood River near Lowman, Idaho

167

Location.- Water-stage recorder, lat. 44°05', long. 115°40', In sec. 29, T. 9 N., R. 7 

ET7~7DO feet upstream from mouth and 2i miles west of Lowman.

Records available.- August 1921 to September 1941. 

Average discharge.- 20 years, 350 second-feet.

Extremes.- Maximum discharge during year, 1,280 second-feet June 8 (gage height, 3.28 

reet); minimum dally, 35 second-feet Dec. 12, 13.

1921-41: Maximum discharge, 4,230 second-feet May 9, 1928 (gage height, 5.17 feet), 

from rating curve extended above 3,200 second-feet; minimum, 28 second-feet Nov. 4, 

1935 (gage height, 0.83 foot).

Remarks.- Records good except those for Nov. 14-17, 23-30, Jan. 2-18, Jan. 21 to Feb. 10, 

which are fair, and those Dec. 11-23, which are poor. Flow regulated by Deadwood 

Reservoir (see p. 165). Small amount of water diverted from tributary of Johnson 

Creek to Deadwood River Basin during the year.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

28 

SO 

31

Oct.

200 

190 

200 

91 

77

70 

66 

64 

62 

61

60 

60 

68 

68 

68

68 

67 

67 

57 

56

86 

269 

282 

310 

396

339 

324 

319 

319 

324 

324

Nov.

329 

364 

349 

329 

329

281 

89 

96 

S9 

S2

77 

62 

56 

b60 

b80

«b7S 

b80 

80 

66 

56

66 

64 

1>50 

b60 

U70

b65 

b65

b70 

b90 

97

Dec.

eo

76 

73 

72 

70

70 

67 

64 

61 

41

MO 

b36 

a36 

a80 

h329

a330 

a336 

a336 

a340 

a340

8340 

a340 

a$10 

200 

78

70 

76 

68 

60 

72 

66

Jan.

46 

MO 

MO 

M5bee

b66 

b70 

b66 

b60 

b60

a60 

a66 

a65 

a70 

a70

a56 

a66 

a66 

h67 

*h66

a66 

a66 

a70 

a66 

a70

a70 

a66 

a60 

a60 

a66 

a65

Feb.

a66 

a70 

a66 

a65 

a66

a70 

a70 

a70 

a70 

a70

73 

76 

67 

68 

60

67 

67 

76 

70 

67

67 

72 

76 

62 

78

72 

7S 

7S

Month

Get 

Not 

Dec

C

Jar 

Pet 

liar 

Apr 

Maj 

Jur 

Jill 

Aug 

Set

1

alendar year 194 0... ...................

ater year 1940-4

Mar.

102 

110 

104 

97 

96

89 

89 

95 

99 

97

102 

102 

99 

91 

93

96 

104 

124 

129 

126

124 

129 

126 

124 

129

147 

164 

183 

203 

240 

244

Apr.

262 

269 

278 

261 

267

226 

210 

207 

218 

248

240 

240 

257 

266 

287

266 

244 

226 

210 

207

214 

221 

261 

296 

339

369 

396 

440 

446 

512

Secondfoot -days

4,961 

3,708

4,561

137,131

1,924 

1,961 

3,866 

8,369 

20,417 

27,180 

11,126 

6,774 

13,239

108,046

May

642 

524 

620 

647 

647

620 

a680 

a670 

a660 

a650

633 

724 

864 

848 

739

660 

626 

600 

542 

618

518 

636 

674 

626 

696

717 

703 

696 

769 

898 

1,070

Maximum

396 

364 

340

1,150

70 

82 

244 

612 

1,070 

1,240 

600 

612 

618

1,240

June

1,160 

1,160 

1,160 

1,160 

1,140

1,100 

1,170 

1,240 

1,180 

1,110

1,060 

1,030 

1,010 

986 

942

898 

S48 

873 

916 

866

784 

732 

688 

664 

613

580 

668 

555 

536 

512

July

4S7 

464 

462 

423 

407

391 

369 

364 

339 

324

374 

468 

423 

401 

3SO

369 

310 

244 

296 

343

491 

600 

642 

468 

468

273 

210 

186 

112 

99 

99

Minimum

66 

|60

36

40 

67 

S9 

207 

51S 

612 

99 

86 

310

36

Aug.

214 

314 

221 

96 

170

360 

450 

226 

183 

221

282 

324 

240 

91 

122

233 

167 

190 

110 

10S

96 

86 

S9 

186 

190

190 

193 

210 

296 

407 

612

Mean

160 

124 

147

376

62.1 

70.0 

124 

279 

669 

906 

359 

219 

441

296

Sept.

612 

618 

618 

498 

469

452

41S 

418 

418 

436

469 

481 

481 

481 

493

499

499 

487 

481 

475

469 

469 

469 

329 

314

310 

314 

329 

364 

385

Run- off In 

acre-feet

9,820 

7,360 

9,030

272,000

3,820 

3,890 

7,660 

16,680 

40,600 

63,910 

22,070 

13,440 

26,260

214,300

« Winter discharge measurement made on thla day. 

a Ho gage-height record; discharge computed on basis of weather records and records for other statlona In Payette River Basin, 

b Stage-discharge relation affected by ice. 

h Computed from staff-gage readings.
168 PAYETTE RIVER BASIN

Payette Lake at Lardo, Idaho

Location.- Staff gage, lat. 44°55', long. 116°07', In sec. 8, T. 18 N., R. 3 E., at 

outlet of lake on North Fork of Payette River, at Lardo. Datum of gage is 4,982.24 

feet above mean sea level (adjustment of 1912).

Drainage area.- 131 square miles.

Records available.- August 1921 to September 1941 (fragmentary).

Extremes.- Maximum gage height observed during year, 8.44 feet June 20; minimum observed, 

1.80 feet Sept. 26.

1921-41: Maximum gage height observed, 8.75 feet July 13, 1935; minimum observed, 

0.95 foot Oct. 3, 1931.

Remarks.- Elevation of Payette Lake Is regulated within the natural range by a structure 

consisting of a series of concrete-filled cribs supporting removable flashboards, 

completed In 1923. Some regulation Is reported to have been effected by timber flashboards for several earlier years. Lake area is approximately 5,000 acres and a 

variation in stage of 5 feet corresponds to a capacity of about 25,000 acre-feet. 

Water is used for irrigation of lands in the vicinity of Emmett. No diversion above 

station. Because of drawdown in outlet channel, stages at the gage are slightly lower 

at times than stages of lake.

Cooperation.- Gage-height record furnished by Forest Service supplemented during period 

Apr. b to June 30 by observation by employee of Payette Valley Water Users Association 

and July 14 to August 17 by records of Bureau of Reclamation.

Gage height, in feet, water year October 1940 to September 1941

i»y

i

&

s

4

5

6

7

e

9

10

11

12

IS

14

15

16

17

16

19

20

2122

23

24

25

26

27

28

SO

SO

XL

Oct.

.

_

_

_

-

_

-

_

_

-

_

-

-

1.99

-

_

_

-

-

-

1.90

-

_

1.92

-

2.08

-

_

_

_

-

HOT.

_

_

_

_

-

_

_

_

_

-

_

-

_

_

-

2.13

_

_

-

_

2.15

_

-

-

_

-

-

2.18

_

'-

Dec.

_

_

_

_

-

2.16

_

_

_

-

_

2.05

_

-

-

_

_

_

_

-

_

.

_

-

-

_

2.49

*-

_

-

Jan.

_

_

2.64

_

-

_

_

_

-

-

.

-

_

-

-

_

_

-

_

-

_

-

_

-

-

_

-

_

_

3.42

Feb.

_

_

3.44

-

_

S.47

_

-

-

_

-

_

3.49

-

_

_

-

_

-

_

-

_

_

-

_

-

_

_

_

-

M«r.

3.25

_

_

_

-

_

_

-

-

_

-

_

2.57

-

_

_

-

_

-

2.41

-

_

_

-

_

-

_

2.4S

_

-

Apr.

_

_

_

3.42

_

_

_

_

-

4.02

_

_

_

-

_

_

4.17

_

- .

_

_

.

_

4.58

4.48

4.62

4.94

4.92

5.02

««r

5.37

5.93

6.34

6.77

6.52

6.92

6.87

6.82

6.80

6.77

6.97

7.31

7.77

7.77

7.64

7.40

7.51

7.22

6.97

6.92

6.92

7.04

.27

.52

.84

.94

.94

.80

.54

.47

7.42

June

7.32

7.20

7.14

7.10

7.20

7.04

7.02

6.97

6.94

6.92

6.92

7.10

7.37

7.52

7.70

7.77

7.77

7.82

8.24

8.40

8.22

8.07

7.87

7.82

7.87

7.92

8.07

8.13

S.17

8.17

-

July

S.16

_

_

-

_

_

_

_

-

8.12

-

_

S.07

S.OO

7.92

7.S2

7.74

7.69

7.56

7.48

7.39

7.22

7.04

6.S7

6.68

6.50

6.29

6.17

6.00

5.82

Aug.

5.62

5.42

5.22

5.02

4.S2

4.62

4.42

4.26

4.12

3.97

3.76

3.62

3.46

3.37

3.24

3.10

2.98

_

_

-

_

_

_

_

-

_

_

_

_

2.38

-

Sept.

_

2.26

_

_

-

2.15

_

_

_

-

_

-

_

1.95

-

_

_

_

..

1.S9

^

_

_

_

-

1.80

1.81

_

_

_

-
PAYETTE RIVER BASIN 169

North Fork of Payette River at Lardo, Idaho

Location.- Water-stage recorder, lat. 44°54'30", long. 116 0 07'30", in sec. 8, T. 18 N., 

R. 3 £., a quarter of a mile downstream from Lardo and outlet of Payette Lake.

Drainage area.- 131 square miles.

Records available.- September 1908 to June 1917, May 1919 to September 1941.

Average discharge.- 30 years .(1908-16, 1919-41), 342 second-feet.

Extremes.- Maximum discharge during year, 2,500 second-feet May 27 (gage height, 6.05 

reetj; minimum, 2 second-feet Sept. 23 (gage height, 1.07 feet).

1908-17, 1919-41: Maximum discharge, 4,260 second-feet June 10, 1933; maximum 

gage height, 7.5 feet June 5, 1909, June 10, 1933; practically no flow Nov. 5-8, 1931, 

Nov. 17-24, 1933, and Nov. 14-27, 1935, Oct. 22 to Nov. 11, 1938.

Remarks.- Records good. Flow partly regulated by flashboards placed at outlet of Payette 

Lake during spring and removed during irrigation season. Since November 1940 some 

water from Payette Lake by-passed through fish hatchery.

Cooperation.- Gage-height record collected in cooperation with Forest Service.

Rating table, water year 1940-41, except period of lee effect (gage height. In feet, 

and. discharge, la second-feet)

1.0 1.4 3.0 273 5,0 1,550 

1.4 10 3.4 440 5.4 1,910 

1.8 31 3.8 655 5.8 2,500 

2.2 72 4.2 910 6.0 2,600 

2,6 164 4.6 1,210

Discharge, la second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

30 

54 

SO 

S4 

64

82 

60 

55 

51 

28

25 

6S 

67 

24 

5

21 

44

68 

65 

63

61 

60 

38 

22 

28

75 

79 

70 

110 

112 

121

NOT.

89

132 

140 

136 

132

132 

132 

132 

132 

130

126 

121 

117 

110 

108

106 

106 

49 

6 

40

90 

88 

87 

S6 

85

84 

86 

90 

94 

92

Dec.

90 

90 

90 

88 

8S

87 

87 

85 

84

82

80 

77 

77 

74 

72

71 

69 

74 

32 

4

4

4 

4 

4 

4

4 

4 

4 

4

5

Jan.

6 

b6 

b6be

5

6 

6 

6 

6 

6

6 

6 

6 

6 

6

6 

9 

16 

24 

27

30 

33 

36 

40 

48

65

57 

57 

57 

57 

57

Feb.

57 

60 

61 

61 

61

61 

64 

123

176 

116

43 

87 

86 

87 

84

82 

80

77 

77 

76

74 

74 

74 

77 

80

79 

77 

79

Month

Oct 

Not 

Dec

C

Jan 

Peb 

Mar 

Apr 

Maj

JUD

Jul 

Aug 

Sep

H

alendar year 1940................ ......

ater year 1940-4

Mar.

230 

346 

322 

SOS 

292

277 

266 

246 

227 

220

220 

211 

200 

191 

185

176 

170 

167 

164 

162

167 

157 

157 

154 

152

152 

154 

159 

102 

14 

13

Apr.

14 

16 

28 

47 

79

92

104 

123 

149 

188

211 

236 

220 

280 

330

334 

326

318 

306 

296

303

314 

346 

400 

470

630 

613 

703 

V74 

878

Secondfoot-days

1,794 

3,066 

1,546

129,363

693 

2,233 

5,943 

9,027 

47,794 

29,014 

9,799 

10,909 

2,098

125,905

May

636 

505 

734 

1,060 

1,170

1,170 

1,130 

1,090 

1,060 

1,050

1,210 

1,500 

2,000 

2,300 

2,160

1,910 

1,780 

1,780 

1,680 

1,370

1,210 

1,290 

1,420 

1,640 

2,000

2,250 

2,450 

2,350 

2,050 

1,960 

1,910

Maximum

121 

140 

90

2,600

57 

175 

346 

878 

2,450 

1,S60 

662 

. 536 

130

2,460

June

1,860 

1,730 

1,680 

1,730 

1,640

1,460 

1,570 

1,370 

1,290 

1,090

796 

470 

530 

607 

661

679 

673 

728 

1,220 

1,730

1,600 

1,310 

S65 

472 

224

172 

162 

177 

346 

382

July

368

310 

2S8 

2SO 

214

186 

167 

144 

135 

119

112 

10S 

102 

175 

284

277 

277 

2S4 

284 

284

292 

296 

448 

520 

551

562 

566 

566 

651 

. 540 

530

Aug.

515 

530 

515 

535 

525

515 

515 

490 

465 

520

510 

475 

440 

404 

368

346 

326 

303 

277 

259

246 

233 

217 

206 

197

188 

177 

167 

157 

149 

140

Minimum Mean

5 57.9 

6 102 

4 49.9

4 363

6 22.4 

43 79.8 

13 192 

14 301 

506 1,542 

162 967 

102 316 

140 352 

31 69.9

4 339

Sept.

130 

126 

119 

116 

110

104 

100 

90 

84 

79

76 

78 

69 

66 

64

61 

68 

57 

68 

67

56 

45 

31 

32 

49

41 

59 

58 

58 

37

Run-off In 

acre-feet

3,660 

6,060 

8,070

256,600

1,570 

4,430 

11,790 

17,900 

94,800 

57,660 

19,440 

21,640 

4,160

245,800

b Stage-discharge relation affected by Ice.
170 PAYETTE RIVER BASIN

North Fork of Payette River at Cascade, Idaho

Location.- Staff gage, lat. 44°31', long. 116°02', In NEi sec. 36, T. 14 N., R. 3 E., 

at Cascade, 375 feet downstream from Halleck and Howard mill dam, half a mile 

upstream from Beaver Creek, and 2i miles downstream from Willow Creek.

Drainage area.- 626 square miles.

Records available.- May to September 1941.

Extremes.- Maximum discharge observed during period, 4,760 second-feet May 16 (gage 

height, 4.78 feet); minimum observed, 175 second-feet Sept. 30 (gage height, 0.78 

foot).

Remarks.- Records good. Flow regulated by Payette Lake (see p. 163 ), Lake Fork Reservoir (see p. 173 ) and slightly affected by flashboards on Halleck and Howard mill 

dam. Gage read twice daily. Several diversions from tributaries above station for 

irrigation.

Cooperation.- Gage-height record furnished by Bureau of Reclamation.

Rating table, Hay 1 to Sept.

0.7 

1.0 

1.3

30 (gage height. In feet, and discharge, 

In a econd-f eet )

135

310

535

1.6 

2.0 

2.4

820

1,250

1,700

3.2

4.0 

4.6

2,670

3,710

4,760

Discharge, In aecond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

e

6 

7 

6 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

31 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oet. HOT. D80. Jan. Feb.

Month

Dot 

NOT 

Dec

C

Jar 

Pel 

Hai 

Api 

Ma3 

Jur 

Ju] 

Auf 

Sei

1

alendar year

 v

[he perl<

Mar. Apr.

Secondfoot-days

98,700 

68,816 

16,766 

16,560 

7,606

-

Hay

1,820 

1,620 

1,580 

1,S20 

2,420

2,420 

2,420 

2,420 

2,540 

2,420

2,420 

2,800 

3,190 

4,100 

4,490

4,760 

4,490 

3,970 

3,640 

3,320

2,930 

2,670 

2,800 

3,600 

3,320

3,710 

4,100 

4,490 

4,490 

4,230 

4,100

Maximum

4,760 

3,970 

1,030 

692 

338

-

June

3,970 

3,710 

3,450 

3,450 

3,320

3,190 

2,930 

3,060 

3,060 

2,670

2,420 

2,060 

1,470 

1,700 

1,640

1,640 

1,580 

1,640 

2,060 

2,930

3,190 

3,060 

2,540 

1,940 

1,300

1,030 

925 

97S 

925 

976

July

1,030 

976 

S72 

672 

720

a628 

535

553 

448 

366

359 

338

317 

27S 

290

395

410 

402 

402 

395

386 

395 

363 

425

527

607 

634 

692 

710 

720 

692

Minimum

1,560 

925 

276 

352 

165

-

Aug.

663 

663 

644 

644 

625

625 

616 

607 

607 

596

607 

692 

692 

625 

580

535 

503 

495

487 

503

463 

471 

448 

487 

402

395 

395 

410 

380 

366 

352

Mean

3,164 

2,294 

541 

535 

254

-

Sept.

338 

338 

338

336 

310

304 

304 

297 

271 

2V1

258 

268 

246 

246 

252

258 

246 

215 

215 

239

a236 

233 

221 

209 

203

197 

197 

197 

197 

165

Run-off In 

aore-feet

195,800 

136,500 

33,250 

32,690 

15,090

413,500

a No gage-height record; discharge Interpolated.
PAYETTE RIVER BASIN 171

North Fork of Payette River near Smiths Ferry, Idaho

Location.- Chain gage, lat. 44°16', long. 116°04', in SWi sec. 23, T. 11 N., R. 3 E., 

420 feet downstream from Beaver Creek, 2i miles downstream from Tripod Creek, and 

2 5/8 miles southeast of Smiths Ferry.

Drainage area.- square miles.

Records available.- May to September 1941.

Extremes.- Maximum discharge observed during period, 4,760 second-feet May 31 (gage height, 

8.48 reet); minimum observed, 218 second-feet Sept. 29 (gage height, 2.66 feet).

Remarks.- Records fair. Flow regulated by Payette Lake (see p. 168) and Lake Fork

Reservoir (see p. 173). Gage read twice dally. Several diversions from tributaries 

above station for Irrigation.

Rating table, May 31 to Sept. 30, 1941 (gage height, in feet, and discharge, 

In second-feet)

2.6 

3.0

3.4

3.5

205

312

441

607

4.2 

4.6 

6.0 

5.8

825

1,070

1,340

1,940

7.5 

8.5

2,660

3,600

4,760

Discharge, in second-feet, water year October 1940 to September 1941

Day

1

a

3

4 

5

6

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

IS 

IB 

20

21 

22 

23 

24 

25

26 

27 

£8 

£9 

30 

31

Dot. NOT. Dec. Jan. Feb.

Month

Oc1 

No\ 

Dec

C

Jar 

Fet 

Mai 

API 

Ma, 

Jur 

Ju] 

Auj 

Sei

I

alendar year

 he peric

Mar. Apr.

Secondfoot -days

84,220 

21,300 

19,080 

9,426

-

May

4,760

Maximum

4,400 

1,250 

825 

406

-

June

4,400 

4,230 

4,160 

3,930 

3,930

3,820 

3,320 

4,040 

3,930 

3,600

3,160 

2,760 

2,380 

2,110 

2,110

2,110 

2,110 

2,110 

2,380 

2,960

3,270 

d3, 250 

d3,000 

(32,400 

dl,900

dl,500 

dl,200 

dl,200 

dl,200 

dl,200

July

01,250 

dl,250 

dl,150 

dl.OOO 

d950

885 

825 

765 

657 

607

a550 

a500 

a450 

a420 

a 400

478 

518 

51S 

561 

561

51S 

518 

478 

47S 

478

518 

657 

825 

885 

825 

825

Minimum

1,200 

400 

424 

218

-

Aug.

825 

765 

710 

710 

710

657 

667 

710 

710 

(3650

(3650 

710 

766 

710 

710

657 

607 

561 

607 

607

561 

518 

518 

518 

518

478 

478 

478 

460 

441 

424

Mean

2,807 

687 

615 

314

-

Sept.

406 

390 

406 

406 

390

39O

373 

358

see

342

327 

327 

327 

327 

312

298 

283 

270 

283

298

298 

283 

270 

270 

270

243 

243 

230 

218 

230

Run-off la 

acre-feet

167,000 

42,250 

37,840 

18,700

265,800

a No gage-height record; discharge computed on basis of records for station at Cascade.

d Doubtful gage-height record; discharge computed on basis of records for station at Cascade.

461677 O - 42 - 12
172 PAYETTE RIVER BASIN

Lake Fork- of Payette River above reservoir, near McCall, Idaho

Location.- Water-stage'recorder, lat. 44°55', long. 116°00', in NWi sec. 8, T. 18 N., 

ft. 4 £., three-quarters of a mile downstream from power plant, 2f miles upstream from 

Lake Fork Reservoir Dam, and 5 miles eaet of McCall. *

Drainage area.- 54.6 square miles.

Records available.- May 1926 to September 1941 (Irrigation seasons only).

Extremes.- Maximum discharge during year, 1,340 second-feet May 13 (gage height, 5.68 

 feet), from rating curve extended above 1,100 second-feet; minimum not determined,

probably occurred during winter.

1926-41: Maximum discharge observed, 2,520 second-feet June 9, 1933 (gage height,

about 7.9 feet, present datum, from high-water mark), from rating curve extended

above 1,100 second-feet; practically no flow at times In 1937 and 1939 because of

power plant.

Remarks.- Records good except those for periods of Ice effect or backwater effect from 

Lake Fork Reservoir, whl,ch are fair. Diurnal fluctuations at low stages caused by 

power plant of McCall Light & Power Co. and small reservoirs above station. No 

diversion above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12

13 

14 

15

16 

17 

18 

19 

20

21

sa 

as

24 

25

26 

27 

28 

29 

30 

31

Oct.

37 

54ei

67 

59

53 

50 

45 

44 

40

38 

37 

35 

34 

32

31 

29 

a29 

a29 

a29

29 

28 

26 

35 

165

94 

75 

63 

60 

62 

66

HOT.

67 

72 

71 

60 

58

62 

68 

71 

86 

60

1)55 

b50 

b50 

b55 

61

60 

56

Dec.

t39

Jan. Feb.

Month

Oct 

NOT 

 Dec

C

Jar 

Fel 

liar

Apr 

Maj 

Jun 

Jul 

Aug 

Sej

VI

ember }

alendar year .

ch 2S-3 

^^

ater year

liar.

107 

119 

136 

140

Apr.

159 

204 

172 

145 

134

122

119 

125 

137 

151

130 

125 

125 

130 

145

124 

114 

104 

99 

102

114 

132 

172 

218 

241

266 

321 

354 

388 

436

Seeondfoot-days

1,556 

1,042

-

502 

5,308 

17,421 

10,564 

E,589 

915 

723

-

May

500 

525 

625 

540 

436

354 

313 

343 

315 

354

526 

617 

1,080 

718 

540

526 

568 

536 

400 

400

500 

625 

718

eoo

800

734 

670 

513 

482 

590 

582

Maximum

165 

72

-

140 

436 

1,080 

610 

172 

44 

34

-

June

511 

461 

533 

470 

422

397 

538 

457 

360 

348

384 

403 

387 

381 

320

275 

258 

403 

610 

416

318 

283 

263 

231 

207

189 

183 

184 

196 

176

July

172 

156 

142 

134 

125

115 

115 

111 

103 

95

92 

90 

S7 

76 

72

69 

62 

59 

70 

62

58 

55 

52 

50 

48

51 

53 

59 

62 

49 

45

Minimum

26 

50

-

107 

99 

313 

176 

45 

22 

20

-

Aug.

44 

40 

38 

36 

34

32

31 

28 

30 

31

28 

33 

32 

27 

24

23 

22 

22 

22 

24

25 

26 

28 

31 

28

34 

36 

28 

26 

26 

26

He an

50.2 

61.3

-

126 

177 

562 

352 

83.5 

29.5 

24.1

-

Sept.

24 

27 

34 

32 

32

28 

24 

24 

23 

24

23

23 

23 

23 

26

24

23 

22 

23 

26

24 

23 

23

22 

21

21 

21 

20 

20 

20

Run-off In 

acre-feet

3,090 

2,070

-

996 

10,530 

34,550 

20,950 

5,140 

1,810 

1,430

~

t Result of discharge measurement, 

a Xo gage-height record; discharge Interpolated. 

b Stage-discharge relation affected by Ice.

Hote.- Backwater from reservoir May 29 to July 2; discharge computed by special slope studies, 

weather records and records for nearby stations-.
PAYETTE RIVER BASIN 173

Lake Fork Reservoir near KcCall, Idaho

Location.- Staff gage and graduations on concrete gate-control structure of dam on Lake 

Fork of Payette River, lat. 44°54', long. 116°03', In NWiNWi sec. 13, T. 18 N., R. 3 

E., 3 miles east of KcCall. Datum of gage Is at mean sea level (levels by Lake 

Irrigation District).

Records available.- April 1926 to September 1941.

Extremes.- Maximum contents observed during year, 19,740 acre-feet June 19 (elevation, 

5,118.75 feet); minimum not determined.

1926-41: Maximum contents observed, that of June 19, 1941; probably no storage 

during fall and winter.

Remarks.- Reservoir Is formed by earth and rock-fill dam, completed In 1926. Capacity, 

16,940 acre-feet between elevations 5,101.0 feet (lower limit of capacity table, 4.0 

feet above gate sill of outlet) and 5,117.0 feet (top of flasnboards, 5.0 feet above 

spillway crest). Dead storage unknown. Water Is used for Irrigation of about 6,800 

acres of land In vicinity of Norwood. Figures given herein represent usable contents. 

Gage read once dally.

Cooperation.- Elevation record and capacity table furnished by Lake Irrigation District.

Contents, In aero-feet, water year October 1940 to September 1941

D*y

1

zs

4

6

6

7

S

e

10

11

12

15

14

16

16

17

18

19

20

81

28

25

24

25

26

27

SB

29

SO

SL

Oct.

2,528

NOT. Dec. Jan. Feb. Mar. Apr.

^

_

_

_

-

_

_

_

_

-

_

_

_

_

-

721

_

_

-

_

2,364

_

3,615

_

_

5,606

6,652

-

Hay

8,268

9,522

10,970

_

13,230

13 ,540

13,690

13 ,850

13,850

13,850

_

14,460

15 ,390

15,390

15,110

14 ,800

14,770

14,770

15,080

15,230

15,540

15,850

16,350

16,780

17,250

17,250

17,250

17 ,210

17 ,020

17,290

17,730

June

17 ,860

17,920

18,140

18,200

18,050

18,200

18 ,360

18,520

18,440

18,200

18,360

18,680

19 ,010

19 ,170

19,170

19 ,140

19 ,010

19,100

19,740

19 ,490

19,170

19,170

19,170

19 ,330

19,250

19,250

19,260

19,120

19,170

19,090

July

19,010

IS ,970

13,890

IS ,310

18,720

18 ,700

18,660

18.540

18,400

18,240

18,010

17,810

17 ,570

17,270

16,970

16 ,700

16 ,460

16,160

15,820

15,510

15,220

14,910

14,600

14,250

13,920

13,620

13 ,330

13,100

12,930

12,700

18,440

Aug.

12,230

11,960

11,690

11 ,420

11,120

10,820

10,630

10,240

10,240

9,686

9,379

9,108

8,919

8,703

6,541

8,298

8,088

7,8O2

7,601

7,399

7,135

6,971

6,769

6,606

6,476

6,360

6,302

6,244

6,186

6,188

6,070

Sept.

6,024

5,989

5,964

6,954

6,931

6,919

5,908

6,896

6,850

6,858

5,838

6,816

6,780

6,757

5,606

6,687

_

_

_

5,699

_

 ,

_

_

-

6,587

_

5,629

6,620

-

Monthly elevation and contents, inter year October 1940 to September 1941

Date Elevation 

(feet)

Contents 

(acre-feet)

Change In contents 

during month 

(acre-feet)
174 PAYETTE RIVER BASIN

Lake Fork of Payette River below Lake Irrigation District canal, near McCall, Idaho

Location.- Water-stage recorder, lat. 44°54', long. 116°03', in SWi sec. 13, T. 18 N., 

R.,3 &., 300 feet downstream from diversion dam for Lake Irrigation District canal, 

one-half mile downstream from Lake Fork Reservoir, and 3 miles southeast of HcCall.

Records available.- October 1940 to September 1941.

Extremes.- Maximum discharge during year, 1,050 second-feet May 14 (gage height, 5.57 

reet); minimum, 3 second-feet Apr. 19 (gage height, 2.10 feet).

Remarks.- Records good. Flow regulated by Lake Fork Reservoir (see p. 173 ) and Lake 

 Irrigation District canal.

Rating table, water year 1940-41, except periods of Ice effect (gage height, In feet,

and discharge, In second-feet) 

(Shifting-control method uaed June 5 to Aug. 21)

2.1 3 3.3 95 4.8 635 

E.4 12 3.6 167 5.E S46 

2.7 28 4.0 295 5.6 1,080 

3.0 53 4.4 450

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

E 

3 

4 

5

6 

7 

S 

9 

10

11 

IE 

IS 

14 

15

16 

17 

18 

19 

20

21 

28

23

24 

25

E6 

27 

E8 

29 

SO 

31

Oct.

all 

all 

all 

11 

11

11 

11 

11 

13 

13

13 

11 

IS 

14 

14

13

a29 

a58 

a58 

a5S

5S 

6S 

57 

58 

39

14 

13 

13 

13 

14 

14

Nov.

14 

16 

16 

17 

20

20 

21 

114 

208 

202

199 

193 

1S7 

18E 

176

173 

170 

320 

S59 

296

344 

193 

156 

130 

112

97 

88 

83 

78 

80

Dec.

77 

74 

7E 

70 

67

65 

64 

62 

60 

56

53 

50 

48 

46 

45

44 

44 

44 

45 

45

45 

45 

47 

49 

50

50 

52 

51 

49 

49 

49

Jan.

b48 

b48 

b47 

46 

45

44 

44 

44 

43 

b4E

b41 

b41 

40 

40 

41

40 

40 

42 

42 

42

42 

41 

41 

41 

42

42 

b41 

b41 

b41 

b40 

b40

Feb.

b40 

39 

b39 

b39 

*b39

bS9 

39 

39 

40 

40

43 

43 

b42 

42 

b41

b40 

MO 

b39 

38 

38

38 

38 

SB 

39 

40

b40 

b39 

39

Month

Oet 

Ho\ 

Dec

C

Jar 

Pet 

Mai 

Api 

Ma: 

Jur 

Ju] 

Aug 

Sej

V

alendar year

11.....................................

ater year 1940-'

Mar.

42 

44

45 

45 

46

47 

47 

47 

47 

47

48 

49

49 

50 

49

4S 

50 

S3 

56 

60

61 

62 

61 

64 

67

71 

77 

86 

97 

116 

133

Apr.

154 

1S4 

205 

21E 

212

205 

199 

199 

202 

212

212 

212 

21E 

212 

212

13S 

6 

5 

4 

4

5 

5 

5 

5 

5

4

5 

4 

4

4

Secondfoot-days

745 

4,063 

1,667

-

1,312 

1,110 

1,864 

3,247 

15.71E 

11,941 

2,144 

1,141 

559

45,505

May

4 

5 

S 

13 

123

302 

366 

414 

430 

430

482

676 

960 

1,020 

872

735 

695 

489 

306 

370

43S 

486 

504 

700 

845

872 

818 

716 

676 

459 

600

Maximum

58 

359

77

-

48 

43 

133 

212 

1,020 

790 

154 

56 

3E

l.OEO

June

600 

504 

558 

605 

531

426 

518 

585 

544 

414

340 

340 

374 

422 

41S

382 

306 

317 

640 

790

472 

306 

250 

234 

215

187 

173 

156 

167 

167

July

154 

128 

108 

90 

67

61 

60 

63 

6S 

75

6S 

71 

77 

77 

74

6E 

65 

66 

63 

61

58 

58 

60 

60 

58

52 

61 

46 

45 

49 

52

Aug.

52 

52 

52 

53 

56

56 

54 

53 

53 

50

45 

36 

31 

23 

23

32 

39 

3S 

2S 

29

33 

33 

33 

34 

34

34

23 

17 

16 

14 

15

Sept.

16 

16

14 

16 

16

14 

14 

14 

14 

13

13 

14 

14 

14 

14

15 

19 

19 

19

20

23 

24 

24 

E4 

24

24 

26 

S2 

28

26

Mini Mean ^-feef

11 E4.0 1,480 

14 136 8,060 

44 53.8 3,310

_

40 42.3 2,600 

38 39.6 2,200 

42 60.1 3,700 

4 108 6, 440 

4 507 51, 160 

156 398 23,680 

45 69.2 4,250 

14 36.8 2,260 

13 18.6 1,110

4 125 90,250

e Winter discharge measurement made on this day.

a Incomplete or no gage-height record; discharge computed on basis of gage-height record and 

assumed time of change oT reservoir gates, 

b Stage-discharge relation affected by Ice.
PAYETTE RIVER BASIN 175

Lake Irrigation District canal near McCall, Idaho

Location.- Staff gage, lat. 44°54', long. 116°03', In SWi sec. 13, T. 18 N., R. 3 E., 

 600 rest downstream from head of canal, half a mile south of Lake Fork Reservoir, and 

3 miles east of McCall.

Records available.- May 1926 to September 1941.

Extremes.- Maximum discharge observed during year, 144 second-feet July 23-28 (gage 

neignt, 4.75 feet); practically no flow during nonlrrlgatlon season.

1926-41: Maximum discharge observed, 150 eecond-feet June 15-22, 1940; maximum 

gage height, 4.93 feet July 12-17, 1937; practically no flow during nonlrrlgatlon 

seasons.

Remarks.- Records good. Staff gage read once or twice a day. No diversions between head 

ana station. Canal diverts water from right bank of Lake Fork of Payette River In 

SWi sec. 13, T. 18 N., R. 3 E., for Irrigation of 6,800 acres of land near McCall and 

Norwood, In the Lake Irrigation District project.

Cooperation.- Gage-height record furnished by watermaster for Lake Irrigation District.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

S 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

V

 0

,

5 1"a5

r

Mov. Deo. Jan. Feb.

Month

Dot 

MOT 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

W

alendar year 1940 ......................

ater year 1940-4 1. .....................

Mar. Apr.

Secondfoot-days

15 

0 

0

11, 131

0 

0 

0 

0 

33 

1,079 

3,525 

2,698 

430

7,7SO

May

> 0

j 

1 

3 

3

3 

3

4 

4 

5

7

Maximum

5 

0 

0

150

0 

0 

0 

0 

7 

79 

144 

112 

31

144

June

8

e

8 

9 

8

8

11 

14 

14 

14

13 

20 

27 

35 

39

40 

43

46 

49 

43

42 

43

47 

50 

65

74 

79 

79 

75 

68

July

63 

69 

73 

74 

74

76 

82 

86 

91 

101

106 

108 

114 

119 

124

130 

136 

140 

140 

140

140 

140 

143 

144 

144

144 

144 

135 

120 

113 

112

Minimum

0 

0 

0

0

0 

0 

0 

0 

0 

8 

63 

33 

7

0

Aug.

112 

108 

107 

107 

110

112 

112 

112 

112 

112

112 

112 

106 

97 

98

102 

100 

98 

92 

84

80 

79 

75 

65 

56

51 

44 

40 

36 

34 

33

Mean

0.5 

0 

0

30.4

0 

0 

0 

0 

1.1 

36.0 

114 

87.0 

14.3

21.3

Sept.

31 

28 

23 

21 

20

19 

17 

17 

15 

14

14 

16

17 

17 

17

IS 

al3 

a!3 

al3

11

a8 

a8 

a8 

a7 

a7

8 

a8 

8 

8 

8

Run-off In 

acre-feet

30

0 

0

22,090

0 

0 

0 

0 

65 

2,140 

6,990 

5,350 

853

15,430

a No gage-height record; discharge computed on basis of Information furnished by watermaster and 

known headgate changes.
176 PAYETTE RIVER BASIN 

Porter Creek near Gardena, Idaho

Location.- Staff gage, lat. 43°57', long. 116°11', In NEi sec. 14, T. 7 N., R. 2 E., at 

Rood ranch house, 0.6 mile upstream from mouth and 2 miles south of Gardena.

Drainage area.- 21.2 square miles.

Records available.- November 1938 to September 1941.

Extremes.- Maximum discharge during year, 181 second-feet Aug. 11 (gage height, 3.58 feet 

from rioodmark), from rating curve extended above 60 second-feet; no flow July 22-27, 

Aug. 10.

1938-41: Maximum discharge observed, that of Aug. 11, 1941; no flow at times.

Remarks.- Records fair except those for periods of ice effect, those for periods of no 

gage-height record, and those for July to September, which are poor. Gage read twice 

dally. Several diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

2.4 

2.7 

2.7 

2.7 

2.6

2.4 

2.3 

2.2 

2.2 

2.2

2.2 

2.2 

2.2 

2.2 

2.2

2.3 

2.2 

2.2 

2.2 

2.2

2.2 

2.3 

2.2

2.3 

#3.3

2.9 

2.9 

2.9 

3i4 

3.5 

3.9

Nov.

4.6 

9.2 

6'. 5 

5.2 

4.5

4.5 

5.4 

5.B 

5.6 

4.9

4.5 

b4.0 

b3.3 

b3.3 

#3.7

#3.9 

4.2 

3.9 

3.8 

4.1

a4.3 

b3.5 

b3.2 

3.8 

3.7

3.7 

3.7 

4.4

5^9

Dec.

5.6 

5.4 

5.2 

5.2 

5.0

5.0 

4.9 

4.9 

4.5 

b4.0

b3.5 

b3 2 

b3.0 

b3.5 

#b4.3

b4.7 

4.9 

5.0 

4.2 

4.5

4.2 

4.2 

5.0 

4.5 

4.5

.4 

.2 

.9 

.9 

.9 

.5

Jan.

b3.8 

1)3.4 

b3.2 

b3.5 

b4.0

1)4.5 

4.5 

4.2 

4.5 

4.4

3.9 

4.2 

4.5 

#5.8 

4.5

4.2 

4.5 

4.7 

4.9 

5.9

5.4 

5.4 

5.8 

6.1 

9.4

10 

7.7 

7.0 

6.5 

6.5 

6.1

Feb.

6.3 

6.3 

5.9 

5.9 

5.9

5.9

B.I 

6.5 

7.7 

9.2

12 

14 

10 

9.7 

B.9

B.6 

S.6 

B.I 

8.6 

B.4

8.4 

9.7 

10 

15 

12

11 

11 

15

Month

Oct 

No\ 

Dec

C

Jan 

Fell 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

VI

alendar year 194 0.. ....................

ater year 1940-4

Mar.

18 

19 

16 

15 

15

13 

13 

13 

13

:s

13 

12

11 

11 

11

10

11

12 

12 

11

11 

11 

10 

10 

9.4

9.4

9.7 

10 

16 

17 

16

Apr.

15 

16 

17 

18 

21

a 19

17 

17 

17 

32

24 

23 

23 

22 

22

20 

19 

18 

17 

16

15 

16 

15 

15 

18

19 

20 

19 

20 

18

Secondfoot-days

78.8 

140.7 

143.7

3,716.6

163.0 

256.7 

3P1.5 

568 

484.4 

352.6 

17.1 

44.1 

74.1

2,714.7

May

18 

18 

25 

25 

23

22 

19 

20 

19 

17

17 

22 

19 

2B 

20

16 

12

12 

13

11

9.2 

B.I 

7.2 

6.8

7.7

8.4

11 

10 

16 

11 

13

Maximum

3.9 

9.7 

5.6

82

10 

15 

19 

32 

28 

28 

2.0 

5 

3.7

32

June

11 

11 

11 

10 

10

8.6 

22 

28 

24 

21

19

17 

13 

14 

13

12 

11 

13 

15 

12

11 

alO 

a8 

a6 

a5

a4 a3.5' 

a3.5 

a?. 5 

a2.5

July

a2.0 

al.5 

al.O 

1.1 

1.6

1.9 

1.6 

1.6 

1.0 

.6

.3 

.2 

.2 

.3 

.3

.3 

.2

.1 

a.l

a.l

.1 

0 

0 

0 

0

0 

0 

.3

.3 

.2 

.2

Minimum

2.2 

3.2 

3.0

0

3.2 

5.9 

9.4 

15 

6.8 

2.5 

0 

0 

1.6

0

Aug.

0.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

0

a5 

2.6 

2.3 

3.1 

2.3

2.7 

3.0 

3.7 

2.1 

1.8

1.8 

2.3 

.9 

1.3 

1.9

1.3 

.9 

1.1 

1.0 

al.O 

1.1

Mean

2.54 

4.69 

4.64

10.2

5.26 

9.17 

12.6 

18.9 

15.6 

11.8 

.55 

1.42 

2.47

7.44

Sept.

1.6 

1.8 

2.0 

3.0 

2.6

2.4

2.3 

2.2 

2.1 

2.0

2.2 

2.2 

2.4 

2.4 

2.7

2.8 

2.8 

2.3 

1.8 

3.0

2.6 

1.8 

2.8 

2.6 

3.2

3.7 

2.7 

2.1 

2.6 

3.4

Run-off In 

acre-feet

156 

279 

285

7,380

323

509 

777 

1,130 

961 

699 

34 

87 

147

5,390

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of records for Johns 

oore Creek near Arrowroclc, and weather records, 

b Stage-discharge relation affected by Ice.

Creek at Yellow Pine,
WEISER RIVER BASIN 177

Welser River at Tamarack, Idaho

Location.- Staff gage, lat. 44°57', long. 116°23', In sec. 30, T. 19 N., R. IE., 0.4 

mile southeast of Tamarack.

Drainage area.- 36.5 square miles.

Records available.- September 1936 to September 1941.

Extremes.- Maximum discharge observed during year, 330 second-feet Apr. 3 (gage height,

 4.02 reet); minimum observed, 5.3 second-feet Oct. 15-20 (gage height, 0.84 foot).

1936-41: Maximum discharge observed, 775 second-feet Mar. 27, 1940 (gage height, 

6.00 feet), from rating curve extended above 600 second-feet; minimum observed, 1.7 

second-feet July 30, 1938, while water was being stored In millpond (gage height, 

0.52 foot).

Remarks.- Records good except those for periods of Ice effect or backwater from beaver

 dams which are fair. Gage read twice daily. No diversions or regulation. Small 

flow from Boulder Creek In Salmon River Basin enters Welser River above station 

through trans-mountaln diversion during late Irrigation season.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

11 

12 

15 

15 

9,4

6.9

7.2 

6.7 

6.2 

5.7

5.7 

6.0

5.7 

5.5 

5.3

5.3 

5.3 

5.3 

5.3 

5.3

5.7 

5.7 

5,7 

6.2

11

13 

10 

8.2 

9.1 

12 

14

HOT.

17 

26 

28 

23 

23

21 

34 

45 

33 

35

32 

28 

30 

21 

17

16 

17 

17 

14 

13

14 

11 

blO 

12 

11

11 

10 

10 

10 

14

Dec.

11 

10 

11 

10 

10

10 

9.S 

9.8 

9.4 

9.4

b8.5 

b7.0 

b6.0 

b6.0

b6,5

b7.5 

8.2 

8.5 

9.1 

11

12 

13 

19 

23 

18

13 

14 

24 

19 

12 

11

Jan.

blO 

b9 

blO 

11 

11

10 

10 

9.8 

9.8 

9.1

9.1 

9.1 

9.1 

9.1 

9.8

9.1 

9.1 

9.1 

9.8 

9.1

9.1 

9.1 

9.1 

9.1 

10

10 

b!6 

12 

12 

11 

b9.1

Feb.

b9.1 

S.8 

bS.5 

bS.5 

b8. 5

9.1 

9.1 

8.S 

9.1 

9.1

9.4 

9.4 

9.1 

9.1 

9.4

9.1 

9,1 

9.1 

8.8 

9.1

9.8 

10 

10 

13

15

20 

12 

15

Month

Dot 

Hot 

Dec

C

Jar 

Pel 

Bai 

Api 

»a3 

Jur 

Ju] 

Aaf 

Sei

1

alendar year 19' 0......................

fater year 1940-4

Mar.

28 

52 

70 

70 

66

62 

66 

70 

73 

78

78 

78 

74 

66 

62

70 

87 

122 

127 

132

132 

122 

111 

12V 

138

150 

162 

175 

202 

246 

262

Apr.

262 

295 

312 

273 

295

246 

216 

202 

IBS 

188

IBS 

175 

168 

162 

156

144 

127 

111 

96 

92

87 

87 

87 

92 

92

92 

92 

92 

87 

82

Secondfoot -days

251.4 

608 

356.7

17,122,1

308.6 

285.0 

3,363 

4,791 

1,499 

1,028 

344.4 

231.8 

226.2

13,293.1

May

82 

87 

87 

87 

87

82 

74 

70 

62 

62

52 

48 

48 

62 

48

38 

38 

42 

36 

31

28 

26 

25 

24 

22

23 

30 

30 

25 

26 

27

Maximum

15 

45 

24

726

16 

20 

262 

312 

87 

68 

22 

8.8

312

June

27 

25 

27 

26 

25

23 

42 

62 

48 

43

45 

38 

34 

32 

30

28 

27 

34 

68 

52

42

38 

34 

32 

30

28 

27 

26 

26 

24

Minimum

July

22

19 

18 

17 

16

15 

14 

13 

12 

12

oil 

oil 

elO 

09.0 

e9.0

C8.0 

C8.0 

07.0 

e7.0 

08. 0

07.0 

e7.0 

o7.0 

07.0 

e7.0

e8.0 

12 

12 

12 

10 

9.4

5.3 

10 

6.0

3.7

9.0 

8.5 

28 

82 

22 

23 

7 

6.7 

6.9

5.3

Aug.

8.8 

8.2 

8.2

7.7 

7.7

7.2 

7.9 

7.2 

7.4 

7.4

7.7 

7.4 

7.7 

7,2 

7.2

6.9 

6.9 

6.7 

6.7 

6.7

6.7 

7.2 

7.4 

7.9 

7.2

7.4 

8.2 

8.2 

7.2 

7.4 

8.2

Mean

Sill 

20,3 

11.6

46.8

9.96 

10.2 

108 

160 

48.4 

34.5 

11.1 

7.48 

7.64

36,4

Sept.

7.7 

7.9 

8.2 

8.8

7.7

8.2

7.7 

7.7 

7.9 

7.7

' 07.5

7.2

6.9 

6.9 

6,9 

6.9 

6,9

Run- off in 

acre-feet

499 

1,210 

708

33,960

612 

565 

6,670 

9,500 

2,970 

2,040 

683 

460 

449

26,370

b Stage-discharge relation affected by ice.

o Backwater from beaver dams; discharge computed on basis of weather records and records for 

other stations in baain.
178 WEISER RIVER BASIN

Weiser River at Starlcey, Idaho

Location.- Water-stage recorder, lat. 44°51', long. 116°27', In sec. 34, T. 18 N., R. 1 

 W., "at Starlcey Hot Springs (Starlcey post office), 10 miles north of Council.

Drainage area.- 106 square miles.

Records available,- August to September 1920, March 1939 to September 1941.

Extremes.- Maximum discharge during year, 690 second-feet Apr. 3 (gage height, 3.91 

reet;; minimum, 13 second-feet Sept. 29 (gage height, 1.32 feet).

1920, 1939-41: Maximum discharge, 2,450 second-feet Mar. 27, 1940 (gage height, 

6.00 feet), from logarithmic extension of rating above 700 second-feet; minimum, 8.0 

second-feet Aug. 31, 1939, Aug. 23, 1940; minimum gage height, 1.04 feet Aug. 31, 

1939.

Remarks.- Records good except those for periods of"missing gage-height record, which are 

fair. Several small diversions from river and tributaries above station.

Rating table, water rear 1940-41 (gage height, in feet, and discharge, in second-feet)

1.3 

1.6 

1,9 

2.2

2.5 

2.8 

3.1 

3.4

150

223

327

452

3.7

4.0

5S5 

735

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

. Oet.

30 

37 

59 

49 

34

29 

26 

24 

23 

22

21 

21 

21 

21 

20

20 

20 

20 

20 

20

20 

20 

21 

27 

S4

60 

49 

43 

47 

55 

SO

HOT.

S4 

124 

133 

109 

94

89 

100 

137 

126 

111

96 

76 

66 

73 

66

63 

60 

59 

52 

4S

50 

40 

35 

4S 

44

37 

40 

40 

45 

4S

Dec.

42 

40 

41 

40

41

40 

39 

39 

40 

27

26 

22 

19 

22 

28

30 

39 

50 

51 

51

49 

51 

62 

77 

80

72 

90 

80 

68 

62 

56

Jan.

42 

36 

39 

52 

52

50 

47 

48 

40 

39

37 

34 

39 

33 

38

37 

37 

40 

41 

41

41 

42 

43 

46 

53

56 

52 

51 

47 

48 

48

Feb.

46 

46 

43 

42 

42

44

47 

45 

46 

47

53 

55 

52 

51 

49

4S 

51 

50 

52 

52

53 

56 

62 

89 

90

S4 

83 

98

Month

Oet 

NOT 

Dec

C

Jar 

Pel 

Mai 

Api 

Haj 

Jur 

Jul 

Aug 

Set

11

alendar Tear 194 0.......... ............

ater year 1940-4

Mar.

144 

198 

217 

201 

190

183 

183 

195 

212 

212

226 

217 

201 

185 

176

161 

212 

286 

312 

304

297 

289 

264 

258 

2S2

312 

351 

409 

439 

*549 

572

Apr.

554 

630 

665 

605 

600

536 

474 

430 

426 

470

461 

430 

418 

413 

409

375 

327 

286 

251 

229

223 

229 

242 

272 

2S9

304 

327 

335 

331 

335

Secondfoot-days

1,046 

2,193 

1,474

50, 60S. 5

1,354 

1,576 

8,257 

11,876 

7,225 

4,399 

1,157 

620 

626

41 ,832

May

359 

355 

4S6 

448 

413

359 

308 

300 

27E 

264

258 

275 

266 

258 

220

198 

190 

1S5 

160 

144

140

139 

139 

146 

144

146 

154 

140 

129 

140 

140

Maximum

84 

137 

90

2,090

56 

98 

572 

665 

448 

232 

S3 

26 

26

665

June

135 

123 

135 

129 

124

124 

169 

195 

190 

175

169 

160 

152 

146 

139

129 

124 

144 

232 

206

181 

163 

148 

139 

131

122 

114 

100 

101 

92

July

83 

75 

76 

65 

69

64 

60 

47 

43 

40

39 

36 

31 

30 

28

27 

26 

24 

26 

26

24 

24 

23 

22 

24

24 

30 

37 

36 

32 

26

Minimum

20 

35 

19

8.8

34 

42 

144 

223 

129 

92 

22 

17 

IS

17

Aug.

24 

22 

22 

21 

20

18 

18 

18 

17 

17

18 

21 

20

19

IS

17 

18 

18 

20 

19

19 

IS 

rt 

19 

a20

a22

a26 

aS5 

a26 

22 

21

He an

33.7 

73.1 

47.5

138

43.7 

56.3 

266 

396 

233 

147 

38.3 

20.0 

20.5

115

Sept.

21 

22 

23 

21 

23

21 

20 

a20 

a20 

20

20 

21 

21

20 

21

20 

20 

20 

26 

26

22 

21 

20 

20 

20

20

20 

20 

18 

19

Run-off In 

acre-feet

2,070 

4,350 

2,920

100,400

2,690 

3,130 

16,380 

23,560 

14,330 

8,730 

2,360 

1,230 

1,240

82,980

a No gage-height record: 

stations in the basin.

discharge computed on basis of weather records and records for other
WEISER RIVER BASIN 179

Welser River near Council, Idaho

Location.- Water-stage recorder, lat. 44°41', long. 116°29', in sec. 29, T. 16 N., R. 1 

W., 0.7 mile downstream from Cottonwood Creek, 2 miles upstream from Middle Fork of 

Welser River, and 3i miles southwest of Council.

Drainage area.- 390 square miles.

Records available.- April 1937 to September 1941.

Extremes.- Maximum discharge during year, 1,940 second-feet Mar. 1 (gage height, 6.10 

reetj; minimum, 34 second-feet July 19 (gage height, 1.09 feet).

1937-41: Maximum discharge observed, 6,700 second-feet Mar. 16 or 17, 1938 (gage 

height, 7.6 feet from floodmark, site and datum then In use), from rating curve extended above 3,500 second-feet; minimum, 22 second-feet June 29, 1940 (gage height, 

0.89 foot.

Remarks.- Records good. Flow partly regulated by Lost Valley Reservoir, (see p.184) 

and other reservoirs. Many diversions above station for Irrigation.

Rating tables, water year 1940-41, except periods of Ice effect (gage height, In feet, 

and discharge, in second-feet)

Oct. I to Dec. 26 Dec. 27 to Sept. 30

1.2 41 2.6 291 1.0 28 3.8 635 

1.4 63 2.9 372 1.4 65 4.2 S50 

1.7 105 3.2 462 1.8 124 4.6 1,040 

2.0 156 3.6 595 2.2 205 5.0 1,250 

2.3 219 2.6 303 5.4 1,430 

3.0 417 5.3 1,730 

3.4 546 6.1 1,940

Discharge, In sesond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

28 

29 

30 

31

Oct.

100 

119 

164 

152

113

94 

83 

76 

70 

67

63 

61 

61 

57 

56

55 

52 

50 

49 

50

49 

50 

50 

68 

230

152 

128 

113 

131 

136 

268

Nov.

276 

573 

527 

384 

317

330 

401 

510 

446 

372

325 

268 

223 

224 

206

197 

193 

195 

172 

158

162 

140 

119 

143 

140

121 

130 

130 

147 

160

Dec.

143 

149 

149 

147

147

14*5 

143 

136 

131 

107

102 

b70 

b65 

b70 

b75

b80 

b95 

b!30 

b!70 

206

139 

204 

336 

494 

544

510 

1,330 

650 

464 

396 

333

Jan.

260 

226 

b!90 

226 

221

i 214 

210 

194 

179 

b!60

b!50 

b!50 

b!70 

177 

170

164 

162 

177 

196 

201

212 

219 

226 

293 

771

940 

563 

443 

372 

325 

293

Feb.

264 

257 

235 

223 

216

223 

235 

228 

233 

264

496 

546 

448 

384 

352

311 

327 

316 

325 

353

384 

480 

530 

1,120 

372

' 685 

615 

735

Month

Oot 

Don 

Dec

C

Jar 

Pel 

Mai 

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

H

alendar year 194 0..... ...... ...........

ater year 1940-'

Mar.

1,390 

1,630 

1,450 

1,200 

1,060

1,040 

965 

990 

990 

918

872 

305 

725 

650 

615

615 

635 

350 

895 

372

628 

805 

745 

685 

705

745 

805 

918 

990 

1,250 

1,300

Apr.

1

1 

1 

1 

1

1

1 

1 

1 

1

1 

1 

1 

1 

1

Secondfoot-days

3,017 

7,699 

7,914

158,067

3,461 

11,712 

28,993 

30,473 

22,717 

14,244 

3,295 

2,535 

2,896

143 ,956

230 

390 

510 

420 

510

330 

170 

040 

020 

200

250 

140 

,120 

060 

060

990 

895 

805 

725 

685

668 

668 

685 

725 

765

305 

372 

372 

895 

918

May

990 

1,020 

1,200 

1,220 

1,140

1,020 

913 

895 

823 

785

805 

850 

372 

328 

725

663 

650 

632 

546 

496

480 

464 

430 

513 

530

513 

530 

546 

430 

513 

530

Maximum

268

573 

1,330

3,780

940 

1,120 

1,630 

1,510 

1,220 

705 

262 

106 

110

1,630

June

530 

496 

513 

496 

464

443 

615 

705 

663 

615

580 

546 

513 

480 

432

405 

372 

432 

705 

593

496 

446 

402 

372 

350

319 

303 

314 

327 

295

July

262 

238 

242 

212 

196

187 

154 

129 

116 

104

91 

79 

65 

58

51

47 

43 

33 

55 

66

65 

64 

63 

59 

63

65 

91 

106 

104 

92 

S3

Minimum

49 

119 

65

24

150 

216 

615 

668 

464 

295 

38 

63 

88

38

Aug.

82 

77 

79 

61 

75

72 

66 

65 

66 

63

66

79 

77 

75 

73

72 

70 

75 

35 

36

83 

86 

88 

89 

96

104 

106 

100 

98 

98 

93

Mean

97.3 

257 

255

432

273 

418 

935 

1,016 

733 

475 

106 

31.8 

96.5

394

Sept.

96 

106 

110 

106 

101

101 

96 

96 

95 

95

94 

95 

93 

96 

95

92 

91 

68 

110 

106

101 

95 

95 

94 

92

92 

91 

89 

39 

91

Run-off In 

acre-feet

5,980 

15,270 

15,700

313,500

16,730 

23,230 

57,510 

60,440 

45,060 

28,250 

6,540 

5,030 

5,740

285,500

b Stage-discharge relation affected by Ice.
180 WEISER RIVER BASIN

Weiser River near Cambridge, Idaho

Location.- Water-stage recorder, lat. 44°35', long. 116°38', In NEi sec. 1, T. 14 N., 

R. 3 W., 2£ miles northeast of Cambridge.

Drainage area.- 605 square miles.

Records available.- March 1939 to September 1941.

Extremes.- Maximum discharge during year, 3,870 second-feet Dec. 27 (gage height, 6.82 

feet;; minimum, 61 second-feet Aug. 11 (gage height, 1.32 feet).

1939-41: Maximum discjiarge, 6,670 second-feet Mar. 31, 1940 (gage height, 8.30 

feet); minimum, 25 second-feet Sept. 3, 1940 (gage height, 0.99 foot).

Remarks.- Records good. Flow partly regulated by Lost Valley Reservoir (see p. 184) and 

other reservoirs. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct.

170 

185 

253 

255 

185

152 

136 

123

113 

106

103 

102 

97 

94 

90

90 

S9 

36 

33 

85

83 

82 

32 

94 

376

261 

211 

181 

199 

321 

399

Nov.

451 

990 

900 

617 

480

510 

564 

810 

671 

560

476 

395 

31S 

315 

299

284 

27S 

284 

253 

234

236 

216 

177 

199 

20S

185 

18S 

192 

218 

261

Dec.

239 

253 

270 

258 

253

234 

236 

231 

218 

190

145 

108 

102 

106 

108

123 

145 

197 

272 

315

299 

315 

569 

900 

960

930 

2,650 

1,240 

840 

687 

569

Jan.

430 

338 

2S4 

341 

334

321 

306 

284 

261 

242

228 

234 

261

267 

253

234 

231 

242 

267 

287

309 

32S 

338 

467 

1,210

1,940 

1,120 

840 

661 

560 

493

Feb.

426 

403 

365 

341 

328

331 

358 

355 

358 

434

990 

1,120 

900 

702 

631

542 

546 

528 

519 

583

661 

S70 

990 

1,900 

1,620

1,180 

1,020 

1,240

Month

Oct 

Hot 

Dec

C

Jan 

Peb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

«

alendar year 194 0. .....................

ater year 1940-4

Mar.

2,080 

2,480 

2,170 

1,740 

1,480

1,420 

1,310 

1,280 

1,240 

1,180

1,120 

1,050 

960 

840 

782

782 

840 

1,020 

1,080 

1,080

1,020 

1,020 

960 

900 

900

960 

1,050 

1,180 

1,240 

1,560 

1,620

Apr.

1,590 

1,740 

1,900 

1,780 

2,080

1,780 

1,560 

,420 

,380 

,560

,660 

,520

1,450 

1,450 

1,450

1,340 

1,240 

1,120 

1,020 

960

960 

960 

1,020 

1,120 

1,180

1,240 

1,340 

1,380 

1,420 

1,480

Secondfoot -days

4,8S2 

11,769 

13,962

260,932

13,911 

20,241 

38,344 

42,100 

41,700 

24,907 

5,482 

2,993 

3,465

223,756

May

1,560 

1,620 

1,900 

1,990 

1,860

1,700 

1,480 

1,480 

1,420 

1,380

1,480 

1,660 

1,780 

1,620 

1,420

1,310 

. 1,280 

1,240 

1,080 

990

990 

990 

1,020 

1,080 

1,120

1,080 

1,180 

1,080 

930 

960 

1,020

Maximum

399 

990 

2,650

6,440

1,940 

1,900 

2,480 

2,080 

1,990 

1,280 

442 

129 

132

2,650

June

990 

930 

930 

900 

840

7S2 

1,120 

1,240 

1,120 

990

960 

900 

870 

840 

755

692 

641 

728 

1,280 

1,080

870 

782 

702 

646 

612

550 

519 

550 

574 

514

July

442 

406 

399 

355 

321

293 

264 

236 

199 

185

160 

149 

141 

122 

113

108 

103 

94 

89 

102

100 

94 

90 

88 

83

86 

113 

156 

151 

129 

113

Minimum

82

177 

102

27

228 

328 

782 

960 

930 

514 

85 

65 

100

65

Aug.

108 

100 

97 

97 

89

85 

74 

72 

69 

66

65 

97 

100 

92 

85

7S 

74 

89 

102 

113

111 

108 

106 

106 

110

120 

129 

122 

115 

110 

108

Mean

157 

392 

450

713

449 

723 

1,237 

1,403 

1,345 

830 

177 

96.5 

116

613

Sept.

105 

116 

132 

132 

130

127 

122 

US 

115 

111

111 

111 

115 

110

108

103 

102 

100 

120 

134

127 

122 

115 

113 

113

113 

111 

110 

108 

111

Run- off In 

acre-feet

9,680 

23,340 

27,690

517,600

27,590 

40,150 

76,050 

85,500 

82,710 

49,400 

10, 870 

5,940 

6,870

443,800
WEISER RIVER BASIN 181

Weiser River above Crane Creek, near Welser, Idaho

Location.- Water-stage recorder, lat. 44°18', long. 116°48', in sec. 10, T. 11 N., R. 4 

W., 1 mile upstream from Crane Creek and 9 miles northeast of Welser.

Drainage area.- 1,160 square miles.

Records available.- July 1920 to September 1941.

Average discharge.- 20 years (1921-41), 811 second-feet.

Extremes.- Maximum discharge during year, 6,580 second-feet Dec. 27 (gage height, 6.65 

reet); minimum, 42 second-feet July 20 (gage height, 0.95 foot).

1920-41: Maximum discharge, 16,900 second-feet Mar. 19, 1932 (gage height, 10.8 

feet from floodmarks), from rating curve extended above 9,000 second-feet by logarithmic plotting; minimum, 5 second-feet (estimated) Aug. 11 to Sept. 10, 1931.

Remarks.- Records good except those for periods of ice effect or no gage-height record, 

which are fair. Several reservoirs and many diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

288 

325 

421 

507 

395

325 

280 

241 

212 

193

1S2 

171 

164 

154 

147

144 

140 

137 

131 

128

124 

124 

121 

134 

293

519 

374 

321 

311 

471 

564

HOT.

695 

1,490 

1,590 

1,150 

642

798 

850 

1,240 

1,060 

888

775 

68S 

558 

507 

495

471 

448 

448 

436 

395

379 

374 

330 

316 

345

350 

316 

335 

359 

551

Dec.

489 

483 

564 

538 

513

489 

465 

443 

a420 

a350

a280 

a220 

a200 

a210 

bh220

a250 

a300 

a400 

a550 

a600

a580 

bh600 

al.100 

hi, 740 

al,900

al,BOO 

a6,000 

a2,500 

hi, 520 

al,200 

al,000

Jan.

aSOO 

a650 

a550 

a650 

h618

a600 

a560 

a520 

a470 

a430

a400 

h410 

a450 

a460 

a450

a430 

a410 

a430 

h465 

a 500

a540 

a570 

a600 

a 800 

2,470

5,050 

2,860 

1,860 

1,400 

1,110 

976

Feb.

858 

775 

723 

681 

639

646 

6S6 

775 

775 

858

2,210 

3,1,60 

2,500 

1,620 

1,430

1,160 

1,130 

1,180 

1,080 

1,210

1,490 

2,040 

2,360 

3,940 

4,440

2,710 

2,230 

2,430

Month

Oct 

Hoi 

Dec

C

Jar 

Fel 

Haz 

Apr 

Haj 

Jur 

Ju] 

Au« 

Sej

H

alendar year 194 0......................

ater year 1940-4

Mar.

4,280 

4,700 

4,440 

3,460 

2,860

2,640 

2,360 

2,300 

2,230 

2,040

1,920 

1,740 

1,620 

1,440 

1,330

1,280 

1,320 

1,490 

1,630 

1,600

1,510 

1,460 

1,410 

1,270 

1,240

1,260 

1,380 

1,510 

1,630 

2,040 

2,160

Apr.

2,160 

2,230 

2,430 

2,430 

2,930

2,640 

2,300 

2,040 

1,920 

2,040

2,500 

2,230 

2,040 

1,980 

1,9SO

1,860 

1,740 

1,550 

1,420 

1,320

1,280 

1,280 

1,310 

1,420 

1,520

1,600 

1,740 

1,860 

1,860 

1,980

Secondfoot-days

8,041 

19,461 

27,924

435,917

28,469 

45,738 

63,570 

57,590 

60,990 

38,637 

7,380 

4,002 

5,079

366,901

May

2,160 

2,300 

2,360 

2,780 

2,640

2,360 

2,100 

2,040 

2,040 

1,920

2,040 

2,360 

2,640 

2,570 

2,230

1,980 

1,920 

1,860 

1,630 

1,430

1,410 

1,460 

1,510 

1,620 

1,800

1,680 

1,800 

1,740 

1,500 

1,480 

1,630

Maximum

564 

1,590 

6,000

14,000

5,050 

4,440 

4,700 

2,930 

2,780 

2,040 

752 

189 

204

6,000

June

1,620 

1,490 

1,450 

1,460 

1,350

1,260 

1,600 

2,040 

1,800 

1,600

1,500 

1,440 

1,370 

1,330 

1,220

1,090 

1,020 

976 

1,550 

1,800

1,340 

1,170 

1,040 

952 

896

835 

790 

850 

920 

858

July

752 

681 

646 

611 

544

477 

410 

349 

288 

245

166 

147 

124 

104

88 

71 

66 

58 

51

66 

78 

68 

71 

66

68 

83 

131 

249 

228 

189

Minimum

121 

316 

200

26

400 

639 

1,240 

1,280 

1,410 

790 

51 

71 

150

51

Aug.

150 

147 

137 

137 

140

121 

110 

98 

85 

80

71 "3 

107 

115 

107

98 

93 

104 

 118 

137

154 

147 

147 

134 

140

160 

185 

189 

178 

171 

164

Mean

259 

649 

901

1,191

919 

1,634 

2,051 

1,920 

1,967 

1,288 

236 

129 

169

1,005

Sept.

154 

164 

193 

204 

201

189 

178 

171 

171 

168

160 

154 

154 

157 

157

154 

154 

150 

150 

189

189 

185 

178 

171 

- 171

168 

164 

164 

160 

157

Run-off in 

acre-feet

15,950 

38,600 

55,390

864,600

56,510 

90,720 

126,100 

114,200 

121,000 

76,640 

14,640 

7,940 

10,070

727,800

Welaer River stations.

b Stage-discharge relation affected by lee. 

h Computed from staff gage readings.
182 WEISER RIVER BASIN 

East Fork of Weiser River near Council, Idaho

Location.- Water-stage recorder, lat. 44°46', long. 116°16', In SEi sec. 31, T. 17 N., 

R. S K three-quarters of a mile southwest of Squaw Creek ranger station and 9 miles 

northeast of Council. Datum of gage is 6,224.1 feet above mean sea level.

Drainage area.- 2.0 square miles.

Records available.- September 1932 to September 1941 (fragmentary).

Extremes.- Maximum discharge recorded during year, 57 second-feet May 24 (gage height,

 3.10 feet); probably no flow at times during winter.

1932-41: Maximum discharge recorded, 77 second-feet June 16, 1938, from rating 

curve extended above SO second-feet; maximum gage height recorded, 4.11 feet June 9, 

1933 (ice affected); no flow Apr. 8, 1937, and probably no flow at times during each 

winter from 1938 to 1941.

Remarks.- Records fair. No diversion or regulation above station.

Discharge, In seeond-feet, mater year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7

S 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

1.1 

1.7 

1.5 

1.4 

1.3

1.2 

1.2 

1.2 

1.1 

1.1

1.1 

1.1 

1.1 

1.1 

1.0

.9 

.9 

.8 

.8 

.8

.8 

.8 

.8 

.9 

5.6

3.0 

2.4 

2.0 

1.9 

1.8 

1.7

Nov.

1.5 

1.7 

1.7 

1.5

Dec. Jan.

Month

Oat 

HOT 

Dec

C

Jam 

Peb 

MarApr 

May 

Juni 

Jul 

Augi 

Sep

W

alendar year

sh... .....................

11 9-30

liter year

Feb.

Secondfoot-days

44.1

_

39.4 

746.8 

839 

169.9 

40.1 

23.4

-

Mar.

Maximum

5.6

_

6.6 

45

13 

2.0 

.9

-

Apr.

bO.5 

b.6

b.7 

b.8 

b.9 

1.1 

. 1>2

1.2 

1.2 

1.2 

1.1 

1.1

1.1 

1.2 

1.3 

1.5 

1.8

2.0 

3.3 

4.1 

4.9 

6.6

May

8.1 

8.8 

15 

13 

12

11 

9.9 

11 

11 

13

18 

27 

31 

27 

25

26 

27 

24 

21 

21

25 

29 

34 

44 

45

43 

37 

31 

31 

34 

34

MlTilrpmni

0.8

-

.5 

8.1 

14 

2.1 

.9 

.7

-

June

31 

32 

35 

33 

32

31 

37 

30 

26 

27

30 

. a32

28 

25 

22 

20

18 

17 

16 

15 

14

Mean

1.42

-

1.79 

24.1 

28.0 

5.48 

1.29 

.78

-

July

13 

12 

11 

10 

9.7

9.0 

8.6 

7.7 

7.0 

6.6

6.0 

5.S 

5.2 

5.0 

4.9

4.5 

4.1 

a3.5 

a3.0 

a3.5

a3.2 

aS. 9 

a2.6 

2.4 

2.4

2.5 

4.1 

3.0 

2.5 

2.1 

2.1

Per 

square 

mile

0.710

-

.895 

12.0 

14.0 

2.74 

.645 

.390

-

Aug.

2.0 

1.8 

1.4 

1.3 

1.2

1.3 

1.2 

1.2 

1.2 

1.2

1.7 

1.8 

1.5 

1.3 

1.3

1.3 

1.3 

1.4 

1.4 

1.4

1.2 

1.2 

1.1 

1.1 

1.1

1.2 

1.1 

1.0 

1.0 

1.0 

.9

Sept.

0.9 

.9 

.8 

.8 

.8

.7 

.7 

.7 

.7 

.7

.7 

.7 

.8 

.8 

.8

.8 

.S 

.9 

.9 

.9

.9 

. .8 

.8 

.S 

.8

.7 

.7 

.7 

.7 

.7

Ru&«of t

Inches Acre-feet

0.82 87

-

.73 78 

13.83 1,480 

15.62 1,660 

3.16 337 

.74 80 

.44 46

-

a Ho gage-height record} discharge computed on basis of weather records and records for nearby 

stations.

b Stage-discharge relation affected by Ice.
WEISER RIVER BASIN 183

West Fork of Weiser River near Fruitvale, Idaho

Location.- Staff gage, lat. 44°50', long. 116°28', in NWi sec. 9, T. 17 N., R. 1 W., at 

Tayior Ranch, li miles northwest of Fruitvale and li miles upstream from mouth. Prior 

to Oct. 12, 1940, at datum 1.00 foot higher.

Drainage area.- 78 square miles.

Records available.- October 1910 to January 1913, October 1919 to September 1925, April 

1937 to aeptemoer 1941.

Extremes.- Maximum discharge observed during year, 350 second-feet Apr. 3; maximum gage 

height observed, 3.57 feet Mar. 2 and Apr. 3; minimum discharge observed, 2 second-feet 

July 16-18.

1910-13, 1919-25, 1937-41: Maximum discharge observed, 1,170 second-feet Mar. 31, 

1940 (gage height, 4.79 feet, present datum); minimum discharge, 0.5 second-foot 

July 23-27, 1911.

Remarks.- Records fair. Gage read twice daily. Several diversions both above and below 

 station for irrigation. Flow regulated by Lost Valley Reservoir (see p. 164).

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

10 

21 

40 

30 

20

14 

12 

12 

12 

12

10 

10 

9 

7 

6

6 

6 

6 

6 

6

6 

6 

6 

6 

24

15 

14 

12 

17 

26 

52

NOT.

55 

139 

132 

100 

85

76 

114 

150 

129 

108

9S 

83 

64 

58 

55

44 

46 

44 

29 

31

33 

16 

23 

30 

24

21 

23 

22 

23 

23

Dec.

20 

20 

17 

21 

21

22 

19 

14 

13 

6

S 

30 

19 

18 

33

34 

51 

75 

72 

64

60 

60 

62 

110 

112

108 

136

112 

90 

S2 

72

Jan.

61 

42 

42 

63 

62

60 

53 

46 

43 

40

44 

44 

4S 

44 

42

38 

40 

44 

44 

46

48 

50 

52 

54 

82

90 

70 

70 

67 

42 

37

Feb.

38 

38 

31 

30 

31

35 

38 

35 

38 

35

51 

52 

55 

53 

44

42 

46 

44 

46 

50

53 

53 

63 

131 

111

89 

76 

116

Month

Oot 

Hoi 

Dec

C

Jar 

Fet 

Max 

Api 

Uaj 

Jur 

Ju3 

Au( 

Sej

»

alendar year 194 0..... .................

Fater year 1940-4

liar.

830 

265 

230 

177 

16S

1-77 

16S 

187 

177 

159

159 

150 

131 

116 

108

104 

105 

159 

187 

159

150 

150 

131 

US 

112

126 

159 

177 

187 

278 

265

Apr.

278 

305 

350 

265 

265

241 

208 

187 

218 

278

278 

290 

290 

290 

273

278 

253 

230 

203 

187

177 

177 

187 

197 

216

230 

253 

241 

241 

265

Secondroot-days

439 

1,873 

1,601

37,488

1,613 

1,523 

5,169 

7,363 

4,923 

2,846 

1,022 

1,462 

1,340

31,184

Bay

290 

290 

335 

320 

320

320 

290 

265 

241 

218

208 

82 

98 

116 

123

120 

114 

128 

110 

105

87 

69 

67 

66 

70

67 

82 

103

72 

72 

75

Maximum

52 

150 

136

1,170

90 

131 

278 

350 

335 

159 

63 

56 

50

350

June

107 

97 

94 

39 

90

89 

114 

150 

159 

150

139 

123 

117 

105 

94

83 

79 

79 

110 

101

S9 

82 

79 

70 

64

60 

62 

57 

58 

46

July

33 

40 

42 

34 

30

24 

24 

20 

16 

12

10 

9 

6 

6 

3

2 

2 

22 

50 

52

53 

43 

4S 

46 

53

53 

57 

63 

53 

43 

53

Minimum

6 

16 

6

4

37 

30 

104 

177 

66 

46 

2 

42 

42

2

Aug.

54 

53 

56 

56 

52

53 

48 

46 

42 

42

44 

50 

43 

44 

42

44 

44 

44 

46 

44

44 

46 

48 

46 

46

43 

43 

46 

46 

46 

46

Mean

14.2 

62.6 

51.6

102

52.0 

54.6 

167 

245 

159 

94.9 

33.0 

47.2 

44.7

85.4

Sept.

46 

46 

46 

46 

46

46 

44 

44 

44 

44

44 

44 

44 

44 

44

44 

44 

44 

50 

46

44 

44 

44 

44 

44

44 

44 

44 

46 

42

Run-off in 

acre-feet

871 

3,720 

3,180

74,360

3,200 

3,030 

10,250 

14,600 

9,760 

5,640 

2,030 

2,900 

2,660

61,840
184 WEISER RIVER BASIN

Lost Valley Reservoir near Tamarack, Idaho

Location.- Staff gage, lat. 44°57'30", long. 116°28', in sec. 28, T. 19 N., R. 1 W., a 

short distance upstream from outlet gates near left end of dam on Lost Creek, 4 miles 

west of Tamarack, and 16 miles north of Council.

Drainage area.- 29.4 square miles.

Records available.- May to September 1924, May 1926 to September 1941.

Extremes.- Maximum gage height observed during year, 26.60 feet June 5; minimum observed, 

13.17 feet Oct. 7.

1924, 1926-41: Maximum gage height observed, 26.90 feet May 14, 1940; gage not 

read when reservoir was nearly empty.

Remarks.- Reservoir is formed by earth dam completed in 1910 and raised 6 feet in 1929. 

Permanent spillway crest is at gage height 22.26 feet; during 1938 temporary flashboard structure was raised to permit storage to gage height about 26 feet. Water 

is used for irrigation of lands in Weiser River Basin.

Co operation.- Gage-height record furnished by Lost Valley Reservoir Co.

Gage height, in feet, water year October 1940 to September 1941

D-y

i

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

-

-

-

-

-

-

13.17

-

-

-

_

-

13.28

-

-

_

-

-

-

-

_

-

-

-

-

.

-

._

_

_

-

NOT.

-

-

-

-

-

-

15.32

_ 

-

-

-

-

_

-

-

-

-

-

-

-

_

-

_

-

_

_

_

-

Dec.

-

 "

-

16.22

*

-

-

16.32

-

16.62

-

-

-

-

_

-

-

-

-

-

-

-

-

-

.

-

_

_

_

-

Jan.

-

-

-

~

-

-

«

-

15.52

.

-

-

-

-

.

-

-

-

-

_

-

-

_

-

_

-

_

15.02

_

-

Feb.

-

~

-

_

-

_

-

-

*

-

-

-

-

.

-

-

-

-

.

_

_

-

.

-

_

_

_

-

Mar.

-

~

-

~

-

-

_

-

-

16.52

-

-

-

-

.

-

-

-

-

_

-

-

_

-

_

-

_

_

_

-

Apr.

-

-

_

-

-

24.00

_

_

-

_

25.00

-

-

-

_

-

-

_

25.20

.

25.20

_

-

_

25.50

_

_

-

"T

-

-

_

.

26.25

_

_

_

_

-

25.80

-

-

-

-

_

-

-

-

'

26.50

26.50

_

.

-

_

_

_.

_

_

-

June

-

-

«

-

26.60

_

_

_

_

-

.

-

-

-

-

.

-

-

-

-

.

-

-

^

26.48

_

.

_

_

_

-

July

-

-

_

-

-

_

_

_

_

-

_

-

-

26.10

-

_

-

-

-

-

_

.

_

_

-

25.01

_

_

_

-

Aug.

24.40

-

_

-

-

_

_

_

-

_

-

-

-

-

_

-

-

~

-

_

.

..

_

-

.

_

_

_

_

20.73

Sept.

-

-

_

-

-

_

..

_

_

-

_

-

-

-

-

_

-

-

-

-

_

_

..

_

-

17.30

_

_

_

-
WEISER RIVER BASIN 185

Lost Creek near Tamarack, Idaho

Location.- Water-stage recorder, lat. 44°57', long. 116°28', In sec. 28, T. 19 N., R. 1 

W., a quarter of a mile downstream from dam of Lost Valley Reservoir, 4 miles west 

of Tamarack, and 16 miles north of Council.

Drainage area.- 29.4 square miles.

Records available.- January 1910 to August 1914, May 1920 to September 1921, May 1924 

to September 1941.

Average discharge.- 11 years (193(5-41), 32.4 second-feet.

Extremes.- Maximum discharge during year, 193 second-feet May 5 (gage height, 2.62 feet); 

practically no flow Dec. 7-10.

1910-14, 1920-21, 1924-41: Maximum discharge, about 688 second-feet May 17, 18, 

1921 (gage height, 4.29 feet); practically no flow at times when gates In dam were 

closed.

Remarks.- Records good except those for periods of no gage-height record, which are fair*. 

No diversion between reservoir and station; practically entire flow diverted below 

station during Irrigation season. Flow regulated by Lost Valley Reservoir (see p.184).

Cooperation.- Gate-height record furnished by Lost Valley Reservoir Co.

Rating table, water year 1940-41 (gage height, in feet, and discharge, in second-feet) 

(Shifting-control method used Aug. S to Sept. 30}

0.6

.8

1.0

1.3

0.1

.5

2.0

9.0

1.5 

1.7 

1.9 

2«2

2.5 

2.8

160

247

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23

24 

25

26 

27 

28 

29 

30 

31

Oct.

5 

5 

5 

5 

5

5 

4 

5 

5 

5

a4 

a4 

3 

3 

3

3 

3 

2 

2 

2

2 

2 

2 

2

2

2 

2 

2 

2 

2 

2

HOT.

2 

2 

2 

a2 

2

2

3 

a3 

3 

4

5 

6 

6 

6 

6

6 

6 

6 

5 

5

5 

.5 1 '

r

Dec.

a5 

a5 

a5 

6 

5

9 

4 

0 

0 

5

19 

18

> a!8 

J

Jan.

 al8 

« 20

> a20

hlS 

6 

6

Feb.

6 

6 

6 

6 

6

6 

6 

6 

6 

6

6 

6 

6 

6 

6

6 

1 6

> a6

6 

5

Month

Oct 

Not 

Dec

C

Jar 

Fet 

Mai 

Apr 

Maj 

Jui 

Jul 

Aug 

Sei

H

Tist........... .........................

ater year 1940-4j_

Mar.

5 

5 

5 

5 

5

5 

5 

5

5 

5

5 

> a5

Apr.

a6 

a5 

a5 

a5 

a5

hlS 

a30 

a45 

a70 

allO

allO 

h!13 

al!5 

al!5 

allO

allO 

a!05 

a!05 

a 100 

h99

a96 

94 

98 

101 

108

116 

114 

113 

116 

126

Secondfoot -days

100 

132 

422

14,689

567 

167 

155 

2,457 

2,834 

1,575 

1,053 

1,555 

1,349

12,366

May

138 

156 

168 

176 

1S4

182 

168 

158 

143 

134

100 

32 

46 

61 

71

76 

78 

SO 

77 

73

64 

46 

46 

46 

49

47 

51 

52 

48 

48 

48

Maximum

5

322

126 

184 

76 

55 

52 

47

164

June

51 

49 

49 

49 

51

52

58 

66 

71 

76

73 

70 

66 

61 

56

52 

4S 

49 

56 

56

53 

51 

47 

44 

41

38 

37 

36 

35 

34

July

32 

31 

30 

28 

26

23 

22 

20 

18 

16

15 

14 

13 

11 

10

10 

9 

42 

55 

54

53 

53 

63 

63 

63

53

52 

52 

52 

51 

49

Minimum

2 

2 

0

0

6

5 

32 

34 

9 

47 

42

0

Aug.

51 

49 

49 

48 

48

48 

48 

49 

49 

51

51 

51 

51 

52 

52

52 

52 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

a50 

a49 

a48 

47

Mean

3.2

4.4 

13.6

40.1

18.3 

6.0 

5.0 

81.9 

91.4 

52.5 

34.0 

60.2 

46.0

33.9

Sept.

47 

47 

47 

47 

47

46 

46 

46 

46 

45

45 

45 

45 

45 

45

45 

44 

44 

44 

44

44 

44 

44 

43 

44

43 

42 

43 

46 

46

Run-off in 

acre-feet

198

262 

S37

29,120

1,120 

331 

307 

4,870 

5,620 

3,120 

2,090 

3,080 

2,680

24,520

a So gage-height record; discharge computed en basis of records for Lost Valley Reservoir, 

h Computed from staff -gage readings.
186 WEISER RIVES BASIN

Hornet Creek near Council, Idaho

Location.- Staff gage, lat. 44°45', long. 116°29', in sec. 5, T. 16 N., R. 1 W., 2i

miles upstream from mouth and 2.5 miles northwest of Council. Prior to Oct. 20, 1940, 

at datum 2.00 feet higher.

Drainage area.- 107 square miles.

Records available.- April 1937 to September 1941 (fragmentary prior to August 1939).

Extremes.- Maximum discharge observed during year, 527 second-feet Mar. 1 (gage height, 

b.ea feet); minimum observed, 0.4 second-foot July 18; minimum gage height observed, 

2.00 feet Oct. 17, 19, present datum.

1937-41: Maximum discharge observed, 1,130 second-feet Feb. 28, 1940 (gage height, 

6.90 feet, present datum); no flow Aug. 19, 20, 1939, and probably at times during 

periods of no record.

Remarks.- Records fair. Gage read once dally. Slight regulation by two small reservoirs 

 on Bouth Fork of Hornet Creek. Several diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct.

20 

29 

34 

26 

20

17 

15 

14 

12 

11

> elO

11

11 

11 

12 

12 

64

35 

30 

27 

27 

32 

50

NOT.

46 

173 

100 

75 

60

64 

64 

114 

95 

79

71 

57 

43 

44 

42

40 

40 

42 

36 

32

34 

29

ie

32 

29

23 

27 

S3 

29 

33

Dec.

89 

89 

30 

89 

32

30 

8S 

88 

88

81

b20

b!5

14 

16

IS 

83 

40 

83 

87

46 

40 

49 

104 

120

91 

499 

150 

104 

87 

75

Jan.

50 

42 

44 

57 

50

47 

47 

43 

33 

33

39 

36 

39 

39 

36

39 

36 

39 

49 

46

49 

49 

49 

61 

125

209 

125 

100 

79 

75 

71

Month

Oet 

Nou 

Dee

C

Jan 

Pel 

Mar 

Api 

Haj 

JUT 

Jul 

Aug 

Se]

71

Feb.

63 

71 

63 

50 

42

50 

63 

61

61 

61

79 

91 

91 

S3 

75

60 

75 

71 

71 

75

79 

87 

95 

209 

178

131 

125 

193

alendar year 19410. .....................

ust....................................

ater year 1940-4

Mar.

527 

471 

417 

326 

27S

301 

27S 

289 

273 

245

235 

216 

18S 

163 

155

163 

180 

245 

235 

216

206 

197 

ISO 

163 

163

171 

180 

197 

206 

266 

245

Apr.

235 

245 

266 

225 

313

245 

216 

197 

180 

1SS

206 

188 

171 

163 

155

140 

126 

120 

106 

100

94 

94 

100 

113

113

113 

133 

126 

133 

140

Secondfoot-days

611 

1,604 

1,987

31,279.6

1,836 

2,453 

7,580 

4,944 

3,669 

2,603 

402.9 

220.7 

440.5

28,351.1

Mai

May

140 

133 

171 

148 

140

126 

113 

113 

113 

113

126 

155 

171 

155 

133

120 

113 

113 

94 

88

38 

94 

94 

100 

113

100 

126 

106 

88 

32 

100

,lMIU2fi

64 

178 

499

1,020

209 

209 

527 

313 

171 

171 

52 

18 

23

527

June

100 

94 

94 

SS 

S3

32 

126 

171 

140 

120

113 

100 

100 

94 

62

75 

71 

75 

106 

38

75 

67 

59 

55 

57

52 

43 

59 

67 

57

July

50 

46 

52 

42 

39

34 

27 

27 

20 

17

15 

8.2 

4.6 

3.2 

1.8

1.1 

.9 

.4 

1.1 

.9

.5

.5 

.5 

.5 

.5

.5 

.7 

1.3 

4.1 

1.5 

1.1

Minimum

18

14

.1

33 

> 42 

155 

94 

82 

48 

.4 

.7 

9.5

.4

Aug.

0.9 

.7 

-1.1 

4.6 

2.5

3.2 

2.5

l.s

3.7 

2.2

2.2 

6.0 

4.1 

4.6 

5.5

5.5 

5.0 

4.1 

7.7 

8.9

S.9 

12 

10 

10 

12

16 

18 

14 

13 

14 

16

Mean

19.7 

53.5 

64.1

S5.5

59.2 

87.6 

245 

165 

US 

66.8 

13.0 

7.12 

14.7

77.7

Sept.

16 

16 

23 

21 

19

17 

16 

16 

15 

15

14 

15 

15

14 

14

13 

12 

11 

23 

16

15 

14 

13

13 

12

12 

12 

9.5 

9.5 

9.5

Run-off In 

acre-feet

1,210 

3,180 

3,940

62,040

3,640 

4,370 

15,030 

9,810 

7,280 

5,160 

799 

438 

374

56,230

b Stage-discharge relation affected by Ice.

e Stage-discharge relation unstable because of channel work; discharge computed on basis of gage 

heights and records for other stations In Welser River Basin.
WEISER RIVER BASIN 187

Middle Fork-of Weiser River near Mesa, Idaho

Location.- Staff gage, lat. 44°39', long. 116°27', in NWi sec. 10, T. 15 N., R. 1 W.,

 at old highway bridge, If miles north of Mesa and 2i miles upstream from mouth.

Drainage area.- 86.5 square miles.

Records available.- August 1919 to November 1921, April 1937 to September 1941. October 

1910 to August 1913 at site three-quarters of a inile upstream.

Extremes.- Maximum discharge observed during year, GG8 second-feet May 13 (gage height, 

3.49 reet); no flow Aug. 3-10.

1919-21, 1937-41: Maximum discharge observed, 1,380 second-feet May 1, 1938, from 

rating curve extended above 1,000 second-feet; maximum gage height observed, 4.88 

feet (present datum) Dec. 11, 1937; no flow at times In 1937, 1939, 1940, and 1941.

Remarks.- Records good except those for periods of ice effect, which are fair. Sage

 read twice daily. Mesa Orchards canal diverts about 64 miles above station.

Rating table, water year 1940-41, except periods of ice effect (gage height, in feet,

and discharge, in second-feet) 

(Shifting-control method used Apr. 19 to July 17)

1.1 

1.4

.6

2.7

1.7 

2.0 

2.3 

2.6

38

87

162

255

2.9 

3.2 

3.6

364

492

695

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

49 

35 

68 

57 

44

26 

25 

24 

22 

22

I 21 

21 

19 

19 

19

19 

19 

19 

18 

18

IS 

17 

17 

21 

101

52 

41 

36 

46 

68 

85

Nov.

120 

168 

120 

72 

62

65 

85 

94 

87 

83

72 

58 

55 

52 

52

55 

62 

58 

44 

38

45 

42 

38 

37 

39

39 

36 

39 

49 

46

Dec.

45 

48 

49 

49 

-49

49 

46 

45 

44 

41

b35 

b32 

bS9 

b28 

bSO

b31 

b35 

b50 

b55 

b55

49 

48 

49 

68 

87

101 

185 

96 

76 

b68 

b60

Jan.

b50 

b45 

b45 

b50 

b50

b45 

b40 

^ b37

> b35

' b37 

42 

45

46 

49 

49 

60 

94

120 

83 

68 

65 

65 

62

Peb.

62 

62 

58 

52 

46

41 

45 

44 

46 

52

108 

108 

85 

76 

68

58 

57 

55 

55 

57

70 

10* 

8'- 

197 

125

105 

96 

105

Month

Dot 

Nov 

Dec

C

Jan 

Peb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

n

alendar year 194 0..... ..........

ater year 1940-4

Har.

135 

185 

171 

135 

128

122 

118 

110 

108 

105

101 

96 

87 

81 

78

79 

83 

81 

92 

94

87 

96 

94 

87 

98

110 

130 

135 

171 

213 

203

Apr.

210 

248 

252 

219 

276

232 

194 

185 

197 

225

210 

210 

210 

210 

203

188 

179 

168 

162 

162

168 

159 

197 

213 

245

266 

312 

326 

341 

372

Secondfoot-days

1,066 

1,912 

1,732

46,386

1,562 

2,125 

3,613 

6,739 

12,703 

6,463 

1,311 

194 

404

39,824

May

426 

376 

492 

516 

470

404 

426 

388 

368 

404

447 

640 

640 

540 

426

404 

404 

447 

315 

290

326 

380 

404 

404 

400

426 

319 

294 

297 

308 

322

Maximum

101 

168 

185

1,000

120 

197 

213 

372 

640 

315 

108 

14 

18

640

June

301 

283 

280 

242 

222

206 

312 

315 

255 

232

242 

245 

232 

225 

174

151 

146 

176 

252 

286

252 

216 

197 

185 

162

140 

135 

146 

135 

118

July

108 

98 

103 

98 

89

74 

65 

d57 

d52 

d44

d41 

d45 

42 

36 

30

25 

23 

21 

21 

20

17 

15 

14 

13 

12

10 

22 

41 

35 

23 

17

Minimum

17 

36 

28

0

41 

78 

159 

290 

118 

10 

0 

5

0

Aug.

14 

3 

0 

0 

0

0 

0 

0 

0 

0

8 

13 

7 

8 

6

3 

2 

4 

7 

11

13 

12 

11 

10 

10

9 

12 

8 

8 

7 

8

Mean

34.4 

63.7 

, 55.9

127

50.4 

75.9 

117 

225 

410 

215 

42.3 

6.'3 

13.5

109

Sept.

S 

9 

13 

15 

18

17 

17 

15 

15 

11

11 

8 

6 

5 

5

5 

7 

9 

15 

18

18 

18 

17 

17 

18

17 

18 

18 

18 

18

Run-off in 

acre-feet

2,110 

3,790 

3,440

91,910

3,100 

4,210 

7,170 

13,370 

25,200 

12,820 

2,600 

385 

801

79,000

b Stage-discharge relation affected by ice. 

d Doubtful gage-height record; discharge computed on basis of assumption that gage heights were 

reported 1 foot too high.

461677 O - 42 - 13
188 WEISER RIVER BASIN

Mesa Orchards canal near Mesa, Idaho

Location.- Staff gage, lat. 44°38', long. 116°25', In sec. 14, T. 15 N., R. 1 W., 1,500 

feet upstream from end of flume, li miles northeast of Mesa, and 3 miles downstream 

from head gates.

Records available.- 1924, 1928, 1930-41 (irrigation seasons only).

Extremes.- Maximum daily discharge observed during year, 34 second-feet July 15-17, 23, 

Aug. 5-7; maximum gage height observed, 2.02 feet July 14, 15, Aug. 6; no flow at 

times.

1924, 1928, 1930-41: Maximum discharge observed, 38 second-feet June 18, J9, 1940 

(gage height, 2.32 feet); no flow during nonirrigation seasons.

Remarks.- Records fair. Canal diverts water from Middle Fork of Weiser River in SEi 

NWt sec. 9, T. 15 N., R. IE., for irrigation of Mesa orchards and for domestic 

supply of Mesa. Flow regulated by gates in diversion dam and by waste gates in 

flume above gage. Gage read twice daily.

Cooperation.- Gage-height record furnished by operators of Mesa orchards.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21

22 

23 

24 

25

26

27

as

29 

30 

31

Oct.

t4

Nov. Dec. Jan. Feb.

Month

Oct 

No\

Dec

C

Jar

Pel 

Mai 

Api

Maj 

Jur 

Ju3 

Auf 

Sej

1

alendar year

tember 3 

he peric

Mar. Apr.

t4

Secondfoot-days

437 

361 

895 

857 

344

-

May

e9 

elO 

ell

e!2 

e!4 

e!5 

e!4 

e!7

e!9 

elS 

el 5 

18 

19

19 

21 

24 

26 

25

25 

26 

26 

25

IS 

11

Maximum

26 

25 

34 

34 

23

-

June

9 

15 

23 

25 

24

24 

16 

7 

6 

6

6 

6

S 

9 

9

13 

IS 

19 

6 

6

7 

6 

7 

7 

9

11 

12

15 

16 

16

July

16 

16 

15 

14 

16

21 

25 

2S 

29 

30

32 

32 

32 

33

34

34 

34 

33 

32 

32

32 

33 

34 

33 

33

32

32 

31 

31 

33 

33

Minimum

9 

6 

14 

19 

7

"

Aug.

33 

33 

33 

33 

34

34 

34 

33 

33 

33

32 

31 

2S 

26 

27

29 

29 

29 

27 

23

21 

23 

21 

20 

19

23 

23 

23 

22 

24 

24

Mean

18.2 

12.0 

28.9 

27.6 

14.3

-

Sept.

21 

18 

16 

11 

11

12 

11 

11 

14 

16

18 

19 

23 

22 

23

20 

19 

15

/ a?

a7 

a7 

a7 

7

Run- off In 

acre-feet

S67 

716 

1,780 

1,700 

682

5,740

t Result of discharge measurement.

a No gage-height record; discharge Interpolated.

e Computed on basis of estimated fall through slope reach.
WEISER RIVER BASIN 

Johnson Creek below Johnson Park near Council, Idaho

189

Location.- Water-stage recorder, lat. 44°46', long. 116°38', in SEi sec. 36, T. 17 N., 

R. 3 W., 30 feet downstream from Johnson Park Creek, three-quarters of a mile southeast of Johnson Park, and 10 miles northwest of Council.

Drainage area.- 5 square miles.

Records available.- March to September 1941.

Extremes.- Maximum discharge during period, 98 second-feet May 12 (gage height, 1.97 

reetj from rating curve extended above 60 second-feet; minimum, 0.5 second-foot 

Sept. 18 (gage height, 0.24 foot).

Remarks.- Records fair. No diversion or regulation.

Rating tables, Mar. 7 to Sept. 30 (gage height, in feet, and discharge, In second-feet) 

(Shifting-control method used Sept. 19-30)

Mar, 7 to May 12 May 13 to Sept. 30

0.4 2.S

.6 5.8

.8 10.5

1.0 17.5

1.3 34

1.6 59

1.9 90

0.2 0.3

.4 1.8

.6 4.4

.8 8.5

1.0 15.5

1.3 33.5

1.6 59

1.9 90

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Oct 

Non 

Dec

C

Jar 

Fet 

Mar 

Api 

Maj 

Jun 

Jul 

Aug 

Sej

T

alendar year

he period..... ...... ... %...............

Mar.

-3.2 

3.3 

3.4 

3.6

3.7 

4.0 

4.0 

4.0 

4.1

4.6 

5.0 

5.3 

5.3 

5.5

5.6 

6.0 

6.0 

6.0 

6.0

6.S 

S.2 

9.5 

10 

13 

16

Apr.

18

19 

17 

15 

14

13 

12 

13 

14 

14

13 

12 

13 

16 

17

15

14 

13 

14 

16

18 

19 

a20 

a25 

aSO

a35 

a45 

a50 

a55 

a60

Secondfoot-days

152.1 

649 

1,823 

760 

162.9 

48.7 

36.7

-

May

a65 

a65 

a75 

a70 

a60

a55 

a50 

a50 

a55 

60

70 

79 

83 

72 

66

62 

61 

54 

47 

47

50 

56 

53 

58 

57

58 

60 

49 

44 

45 

47

Maximum

16 

60 

S3 

55 

11 

2.4 

4.3

-

June

41 

37 

35 

32 

30

32 

55 

43 

34 

29

27 

26 

25 

24 

22

20 

20 

29 

30 

20

18 

16 

14 

14

13

12 

14 

18 

17

13

July

11 

10 

10 

9.1 

8.3

7.6 

6.9 

6.4 

6.0 

5.8

5.7 

5.3 

4.9 

4.8 

4.4

4.3 

4.0 

4.0 

3.8 

3.7

3.4 

3.1 

2.9 

2.8 

3.0

2.9 

3.4 

4.9 

4.4 

3.3 

2.8

Minimum

3.2 

12 

44 

12 

2.8 

1.0 

.6

-

Aug.

2.4 

2.2 

2.0 

1.8 

1.7

1.6 

1.5 

1.4

1.4 

1.3

1.6 

2.2 

1.6 

1.3 

1.1

1.0 

1.0 

1.7 

1.8 

2.2

1.7 

1.4 

1.2 

1.1 

1.3

2.2 

1.7 

1.4 

1.2 

1.5 

1.2

Mean

6.08 

21.6 

58. S 

25.3 

5.25 

1.57 

1.22

-

Sept.

1.0 

3.7 

2.3 

1.6 

1.2

1.0 

.9 

.S 

.8 

.7

.7 

.8 

.8 

.8 

.8

.7 

.6 

1.4 

4.3 

1.9

1.4 

1.2 

1.0 

.9 

.9

.S 

.8 

.9 

1.0 

1.0

Run-off in 

acre-feet

302 

1,290 

3,620 

1,510 

323 

97 

73

7,220

a Incomplete or no gage-height record; discharge computed on basis of recorded range in stage, 

weather records, and records for nearby stations.
190 WEISER RIVER BASIN

Rush Creek at Cambridge, Idaho

Location.- Staff gage, lat. 44°35', long. 116°40', In SWi sec. 2, T. 14 N., R. 3 W.,

 in Cambridge, 150 feet upstream from Superior Street and three-eighths of a mile upstream from mouth.

Records available.- March 1938 to September 1941.

Extremes.- Maximum discharge observed during year, 291 second-feet May 13 (gage height,

 4.64 feet); minimum observed, 0.2 second-foot July 18, 19, 22.

1938-41: Maximum discharge observed, 582 second-feet (discharge measurement) Mar. 

16, 1938 (gage height, 6.07 feet); no flow at times during each year 1938-40.

Remarks.- Records good except those for periods of Ice effect, which are fair. Gage

 read twice dally. Several diversions above station for irrigation. Flow regulated 

slightly by power plant 8 miles above station.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

32 

33 

24' 

25

26 

27 

28 

29 

30 

31

Oct.

 9.6 

16 

29 

14 

11

9.9 

9.9 

S.9 

S.3 

7.3

7.3 

6.7 

6.7 

6.2 

6.2

5.6 

5.6 

5.0 

5.0 

4.8

4.5 

4.8 

5.0 

7.0 

24

15 

15 

13 

18 

IS 

20

HOT.

17 

24 

22 

18 

16

20 

31 

28 

25 

21

IS 

16 

16 

16 

15

14 

14 

13 

12 

12

13

13 

bll 

12 

12

12 

12 

12 

13 

12

Dec.

12 

13 

14 

13 

14

13 

13 

13 

13 

11

9.6 

S.3 

7.6 

b7.5 

blO

b!5 

b25 

b40 

44

41

33 

31 

43 

50 

52

S7 

169 

72 

46 

38 

30

Jan.

29 

34 

23 

24 

23

21 

17 

13 

12 

b!2

b!2 

b!2 

b!2 

b!3 

b!3

b!3 

b!3 

b!3 

b!3 

13

14

14 

16 

31 

127

77 

60 

43 

36 

32 

26

Feb.

21 

21 

20 

19

IS

20 

21 

20 

29 

32

117 

107 

52 

46 

44

35 

33 

32 

35 

36

37 

56 

72 

102 

68

56 

49 

87

Month

Oct 

Ho\ 

Dec

C

Jar 

Pel 

Mat 

Apt 

Maj 

Jui 

Ju3 

Aug 

Se]

V

alendar year 194 0 ......................

ust....................................

ater year 1940-4

Mar.

92 

97 

77 

64 

56

52 

49 

45 

46 

43

37 

35 

31 

29 

27

26 

29 

29 

29 

29

26 

27 

23 

22 

21

21 

24 

29 

31 

39 

3S

Apr.

40 

48 

47 

46 

60

47 

43 

41 

41 

43

45 

39 

38 

38 

42

37 

36 

35 

33 

34

35 

40 

43 

50 

64

77 

102 

107 

122

137

Secondfoot-days

327.3 

490 

9S8.0

15,653.2

811 

1,2S5 

1,223 

1,610 

5,409 

3,167 

322.1 

102.5 

151.9

15.S86.S

May

158 

158 

192 

169 

142

132 

122 

127 

127 

158

192 

260 

291 

231 

204

ISO 

169 

158 

132 

122

147 

ISO 

204 

217 

245

204 

204 

15S 

142 

137 

147

MaxLmum

29 

31 

169

319

127 

117 

97 

137 

291 

192 

39 

6.7 

9.6

291

June

142 

137 

147 

137 

132

127 

192 

158 

132 

132

137 

137 

132 

122 

112

97 

92 

112 

127 

92

S7 

72 

60 

60 

52

47 

48 

51 

50 

44

July

39 

36 

36 

32 

2S

23 

19 

14 

11 

S.9

8.3 

6.4 

5.9 

3.5 

1.4

.4 

.4 

.2 

.2 

.4

.3 

.2 

.7 

.6 

.6

.7 

1.8 

5.3 

20 

9.9 

8.0

Minimum

4.5 

11 

7.5

0

12 

18 

21 

33 

122 

44 

.2 

1.2 

3.0

.2

Aug.

6.7 

4.5 

4.2 

4.2 

5.0

6.4 

5.6 

4.S 

2.S 

1.4

1.3 

2.8 

2.6 

2.1 

1.7

1.4 

1.2 

1.5 

3.7 

2.S

2.4

l.s

1.8 

1.7 

2.4

3.7 

4.0 

3.3 

3.0 

5.3 

6.4

Mean

10.6 

16.3 

31.9

42. S

26.2 

45.9 

39.5 

53.7 

174 

106 

10.4 

3.31 

5.06

43.5

Sept.

5.3 

S.3 

9.6 

7.3 

6.4

5.9 

5.9 

5.9 

5.9 

4.S

3.7 

4.2 

4.5 

5.0 

5.0

4.2 

4.0 

3.7 

5.6 

5.3

5.3 

5:3 

4.S 

4.5 

4.2

4.0 

3.7 

3.3 

3.3

3.0

Run-off In 

acre- feet

649 

972 

1,960

31,040

1,610 

2,550 

2,430 

3,190 

10,730 

6,280 

639 

203 

301

31,510

b Stage-discharge relation affected by Ice.
WEISER RIVER BASIN 191

Pine Creek near Cambridge, Idaho

Location.- Staff gage, lat. 44°35', long. 116°44«, In SWi sec. 32, T. 15 N., R. 3 W.,

 300 feet upstream from mouth of West Fork and 3.2 miles northwest of Cambridge.

Records available.- April 1938 to September 1941.

Extremes.- Maximum discharge observed during year, 246 second-feet Mar. 2 (gage height,

 2.38 feet); minimum observed, 4 second-feet July 16-19, 22-24, Aug. 7-11; minimum 

gage height observed, 0.52 foot July 16, 18.

1938-41: Maximum discharge observed, 392 second-feet Apr. 1, 1940 (gage height, 

3.26 feet), from rating curve extended above 250 second-feet; minimum observed, 2 

second-feet on several days July to October 1939 and July and August 1940; minimum 

gage height observed, 0.34 foot July 24, 1939.

Remarks.- Records good except those for periods of Ice effect, wlilch are fair. 

 read twice dally. Several diversions above station for Irrigation.

Gage

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

30 

31

Oct.

10 

11 

16 

17 

IS

18 

IS 

17 

15 

15

15 

15 

14 

13 

13

13 

12 

12 

13 

13

12 

12 

13 

14 

15

19 

20 

22 

22 

22 

22

HOT.

25 

27 

26 

25 

22

29 

52 

64 

34 

30

2S 

27 

24 

23 

23

21 

23 

21 

22 

21

21 

21 

2i 

21 

21

20

19 

19 

18 

IS

Dec.

IS 

IS 

18 

18 

IS

dlS 

IS 

IS 

19 

IS

b!6 

b!4 

bll 

blO 

blO

bll 

b!3 

b!7 

b22 

b24

23 

21 

2S 

43 

64

152 

100 

70 

62 

54 

46

Jan.

40 

31 

27 

31 

30

28 

25 

24 

24 

b22

b21 

b20

b!9 

b!9 

b20

b20 

20 

IS 

19 

19

19 

19 

20 

25

37

50 

41 

40 

38 

35 

32

Feb.

30 

30 

2S 

27 

27

26 

27 

2S

31 

33

46 

58 

56 

45 

43

34 

35 

34 

34 

36

3S 

39 

42 

62 

70

66 

69

97

Month

Oct 

Hon 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

H

alendar year 194 0.. ....................

ater year 1940-4

Mar.

216 

d236 

207

161 

148

148 

150 

14S 

148 

147

139 

120 

103 

94 

SI

SO 

S4 

9S 

94 

90

90 

83 

81 

7S 

73

70 

73 

73 

81 

86 

94

Apr.

97 

98 

107 

114 

119

114 

95 

97 

97 

97

90 

87 

SI 

76 

73

73 

73 

65 

61 

60

60 

60 

60 

62 

73

SI 

39 

97 

108 

122

Secondfoot-days

4S1 

766 

992

15,995

S33 

1,191 

3,574 

2,586 

3,557 

2,235 

449 

244 

379

17,237

May

138 

131 

134 

127 

110

100 

90 

87 

94 

114

124 

150 

170 

159 

159

112 

103 

97 

SI 

78

97 

110 

119 

131 

127

122 

136 

119 

78 

76 

S4

Maximum

22

64 

152

34S

50 

97 

236 

122 

170 

124 

34 

11 

15

236

June

81 

90 

86 

7S 

81

7S 

122 

124 

102 

102

102 

97 

94 

94 

90

76 

70 

78 

73 

64

55 

55 

55

4e

42

3S 

35 

45 

42 

38

July

34 

33 

30 

28 

27

26 

24 

23 

17 

13

-"2 

Ij. 

10 

9 

7

5 

4 

4 

5 

11

9 

5 

5 

5 

5

6 

6 

2S 

22

14 

11

Aug.

10 

9 

7 

6 

6

6

4 

4 

4 

4

4 

6 

7 

6 

6

9 

9 

10 

10 

10

S

7 

9 

10 

10

10 

10 

1011 11 

11

Sept.

11 

12 

13 

14 

15

14 

14 

14 

12 

9

10 

11 

13 

12 

11

13 

13 

13 

14 

14

14 

14 

14 

13 

14

12 

12 

11 

11 

12

Minimun, Mean ^'^

10 15.5 954 

IS 25.5 1,520 

10 32.0 1,970

2 43.7 31,730

IS 26.9 1,650 

26 42.5 2,360 

70 115 7,090 

60 86.2 5,130 

76 115 7,060 

35 74.5 4,430 

4 14.5 891 

4 7.9 4S4 

9 12.6 752

4 47.4 34,290

b Stage-discharge relation affected by ice. 

d Doubtful gage-height record; discharge computed on basis of assumption of error in one gage 

reading.
192 WEISER RIVER BASIN 

Little Weiser River near Indian Valley, Idaho

Location.- Staff gage, lat. 44°30', long. 116°24', in NEi sec. 1, T. 13 N., R. 1 W.,

 60 feet downstream from barn at Richardson Ranch, about 1 mile upstream from diversion 

feeding C. Ben Ross Reservoir, and 4f miles southeast of Indian Valley.

Drainage area.- 81.9 square miles.

Records available.- April 1938 to September 1941. June 1920 to February 1921, March to 

September 1923, and February 1924 to October 1927 at nearby sites.

Extremes.- Maximum discharge observed during year, 482 second-feet May 12, 13 (gage

 he 1 gilt, 3.40 feet); minimum observed, 13 second-feet Oct. 18-24, Sept. 11, 12, 21-30; 

minimum gage height observed, 0.48 foot Sept. 26-28, 30.

1920-21, 1923-27, 1938-41: Maximum discharge observed, about 1,840 second-feet 

Feb. 4, 1925; minimum observed, 3.6 second-feet Aug. 28-30, Sept. 4, 5, 1924.

Remarks.- Records good. Gage read twice daily. One small ranch diversion above station.

 Many diversions below station for irrigation including feeder canal to C. Ben Ross 

reservoir.

Discharge, In second-feet, water year October 1940 to" September 1941

Day

1 

2 

3 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

19

18 

IS 

26 

24

22 

20 

IS 

16 

16

15 

14 

14 

14 

14

14 

14 

13 

13 

13

13 

13 

13 

15 

54

29 

26 

23 

30 

42 

45

Hov.

53 

135 

135 

70 

60

61 

66 

70 

61 

51

48 

32 

31 

34 

33

32 

35 

34 

2S 

28

30 

21 

18 

28 

26

22 

22 

28 

100 

60

Dec.

53 

53 

51 

4S

48

47 

43 

40 

40 

27

24 

24 

19 

IS 

23

23 

26 

34 

33 

32

30 

30 

42 

43 

46

45 

128 

65 

55 

51 

47

Jan.

39 

32 

32 

37

37

37 

34 

30 

2S 

27

29 

27 

29 

31 

30

30 

29 

32 

40 

42

40 

40 

39 

47 

93

71 

56 

50 

43 

39 

38

Month

OOt 

HOT 

Dec

C

JanPeb 

Mar 

Apr 

Ha7 

Jun 

Jul 

Augi 

Sep

W

ember. ....................

t ember. ...................

ater year 1940-41

Feb.

36 

36 

33 

30 

29

32 

35 

32 

34 

39

93 

93 

63 

56 

53

46 

46 

44 

43 

46

51 

69 

68 

144 

106

SI 

76 

170

Secondfoot-days

63S 

1,452 

1,2SS

41,496

1,208 

1,6S4 

3,685 

5,572 

9,656 

4,901 

1,331 

5SO 

431

32,426

Har.

305 

256 

190 

144 

135

120 

106 

113 

106 

100

93 

S7 

76 

69 

67

71 

76 

100 

93 

93

S7 

93 

S7 

81 

93

100 

120 

113 

161 

ISO 

' 170

Maximum

54 

135 

128

626

93 

170 

305 

268 

4S2 

26S 

81 

29 

19

482

Apr.

190 

190 

211 

211 

244

200 

ISO 

170 

170 

190

200 

190 

190 

190 

ISO

161 

144 

135 

12S 

12S

12S 

144 

161 

ISO 

190

200 

222 

233 

244 

268

May

280 

256 

332 

360 

31S

280 

256 

305 

2SO 

2SO

332 

450 

4S2 

450 

360

346 

332 

2SO 

256 

244

268 

280 

305 

346 

332

31S 

292 

256 

244 

2SO 

256

MIniTintnl

13

18 

18

6

27 

29 

67 

128 

244 

87 

26 

15 

13

13

June

233 

222 

233 

222 

200

200 

268 

233 

233 

222

190 

170 

161 

152

135

123 

120 

152 

211 

170

12S 

113 

113 

106 

106

93 

100 

100 

100 

S7

Mean

20.6 

48.4 

41.5

113

39.0 

60.1 

119 

1S6 

311 

163 

42.9 

18.7 

14.4

88. S

July

SI 

76 

76 

65 

63

60 

55 

53 

48 

48

45 

44 

42 

41 

40

37 

34 

32 

32 

30

30 

28 

2S 

26 

26

27 

39 

39 

32 

28 

26

Per 

square 

mile

0.252 

.591 

.507

1.3S

.476 

.734 

1.45 

2.27 

3. SO 

1.99 

.524 

.228 

.176

1.08

Aug.

26 

24 

22 

21 

21

20 

19 

18 

18 

17

IS 

29 

20 

17 

16

17 

15 

20 

21 

20

IS 

16 

16 

16 

16

19 

19 

16 

15 

15 

15

Sept.

14 

15 

17 

16 

16

15 

15 

14 

14 

14

13 

14 

14 

14 

19

16 

16 

15 

14 

14

14 

13 

14 

13 

13

13 

13 

13 

13 

13

Run-off

Inches

0.29 

.66 

.58

IS. 84

.55 

.76 

1.67 

2.53 

4.3S 

2.22 

.60 

.26 

.20

14.70

Acre-feet

1,270 

2,880 

2,550

32,310

2,400 

3,340 

7,310 

11,050 

19,150 

9,720 

2,640 

1,150 

S55

64,320
WEISER RIVER BASIN 193

Crane Creek Reservoir near Mldvale, Idaho

Location.- Staff gage, lat. 44°22', long. 116°37', In SEi sec. 19, T. 12 N., R. 2 W., 

at gate-control structure near left end of dam on Crane Creek, 10 miles southeast of 

Mldvale.

Drainage area.- 242 square miles.

Records available.- November 1923 to September 1941.

Extremes.- Maximum gage height observed during year, 49.2 feet Feb. 13, 25; minimum not 

determined.

1924-41: Maximum ^age height observed, 56.3 feet Feb. 22, 1927; no usable contents 

Sept. 23, 1928, to Feb. 25, 1929, and Sept. 25 to Dec. 1, 1929.

Remarks.- Reservoir is formed by earth dam completed in 1910 and raised during 1920-21. 

Capacity is reported to be about 60,000 acre-feet at gage height, 55.0 feet (elevation 

of spillway crest). Water is used for irrigation of lands in the lower Weiser Valley. 

Gage read once daily.

Cooperation.- Gage-height record furnished by Crane creek Reservoir Administration Board.

Gage height, In feet, water year October 1940 to September 1941

Day

1

2

3

4

e

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

_

.

_

_

32.65

_

_

-

32.68

-

.

32.70

_

_

-

_

-

.

32.75

-

_

-

_

_

-

32.80

.

_

_

_

-

NOT.

_

33.20

_

_

-

_

_

-

35.00

-

_

_

_

_

-

35.50

_

_

-

_

_

36.10

_

-

_

_

_

36.30

-

Dec.

_

_

_

_

-

.

37.10

_

-

_

_

_

38.00

-

.

.

_

_

-

38.80

_

_

_

-

.

_

40.40

_

_

-

Jan.

_

_

_

41.10

-

_

_

_

_

-

41.30

_

_

_

-

_

_

41.55

_

-

_

_

_

_

43.80

44.80

45.60

_

_

46.20

-

Feb.

46.60

_

46.70

_

46.90

_

47.10

_

-

48.10

49.00

49.20

49.00

48.70

48.20

47.80

47.50

47.20

47.00

47.10

47.50

48.00

48.50

49.20

49.00

48.80

48.70

_

.

-

Mar.

48.50

48.50

48.45

48.10

47.70

47.40

47.40

47.50

_

-

_

_

_

_

47.90

_

_

_

_

-

_

48.20

_

_

-

_

-

48.30

48.30

48.25

48.25

Apr.

48.20

48,20

48.10

48.00

48.10

48.00

48.00

48.00

-

48.40

_

_

48.20

48.15

48.00

48.00

_

48.00

-

47.95

47.95

47.95

48.00

47.95

47.95

47.95

_

_

_

-

May

47.95

-

48.00

48.00

48.00

48.00

48.00

.

48.00

48.00

48.00

47.95

47.95

-

47.95

47.95

47.92

.

-

47.90

47.90

47.85

47.85

47.80

-

47.80

47.80

47.80

_

47.80

47. SO

June

47.80

47.80

47.75

47.75

47.70

_

_

48.10

48.10

48.10

48.10

-

48.05

-

48.00

48.00

_

48.00

48.10

48.12

48.10

48.10

48.10

48.05

48.00

48.00

-

48.00

48.10

48.10

-

July

48.10

48.05

48.00

48.00

47.95

47.95

_

47.90

47.90

47.85

_

47.80

47.70

47.65

47.60

_

47.20

47.00

-

45.70

46.60

46.50

_

46.20

-

_

45.80

45.70

-

45.50

45.40

Aug.

45.30

45.20

45.15

45.10

45.00

44.90

_

44.80

44.60

44.55

44.40

44.20

-

44.00

43.80

43.50

-

43.25

43.10

-

42.90

42.80

-

42.70

42.60

42.60

42.55

42.50

42.40

42.35

42.30

Sept.

42.30

42.30

42.25

42.25

42.20

42.20

_

42.15

_

42.10

42.10

42.10

42.00

42.00

42.00

41.95

41.95

41.95

41.90

41.90

_

-

_

-

-

41.80

41.75

41.75

41.70

41.70

-
WEISER RIVER BASIN

Crane Creek near Midvale, Idaho

Location.- Water-stage recorder and concrete control, lat. 44°22', long. 116°37'30", in 

SEi sec. 19, T. 12 N., R. 2 W., 400 feet downstream from Crane Creek Dam and 10 

miles southeast of Midvale.

Drainage area.- 242 square miles.

Records available.- October 1910 to April 1916, May 1924 to September 1941.

Average discharge.- 20 years (1912-15, 1924-41), 65.9 second-feet.

Extremes.- Maximum discharge during year, 736 second-feet Mar. 1 (gage height, 3.27 feet); 

practically no flow at times when gates in dam were closed.

1910-16, 1924-41: Maximum discharge observed, 4,240 second-feet Dec. 3, 1910 (gage 

height, 8.9 feet), from rating curve extended above 3,500 second-feet; practically no 

flow at times in each year when gates in dam were closed.

Remarks.- Records good. Flow regulated by Crane Creek Reservoir (see p. 193 

diversions above station. No large

Cooperation.- Gage-height record furnished by Crane Creek Reservoir Administration Board. 

Rating table, water year 1940-41 (gage height, in feet, and discharge, In second-feet)

.5

.7

1.0

O.5

7 

20 

36

1.3 

1.6 

1.9 

2.2 

2.5

101

141

192

264

361

2.S 

3.1 

3.3

484

635

755

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

O 

0 

0

o 

o

o 

o 

o

0

o

f253 

f586 

664 

699 

693

693 

658 

603 

603 

436

1OS 

0 

99 

35O 

546

613 

613 

f654

Month

Oct 

NOT 

Dec

C

Jar 

Pel

Mat 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

Kl

alendar year 19< 0 ......................

ater year 1940-

Mar.

730 

7SO 

730 

730 

681

532 

134 

fl 

0 

O

0 

O 

O 

0 

0

0 

0 

0 

O

o

o 

o

0

o 

o

0

o

32 

54 

52 

52

Apr.

52

106 

159 

106 

135

192 

194 

131 

65 

50

117 

213 

213 

225 

223

116 

50 

50 

48 

48

35 

17 

12 

12 

12

12 

6 

O 

O 

O

Secondfoot-days

0 

O

0

43,859

0 

8,871 

4,458 

2,599 

214 

873 

2,695 

2,815 

247

22,772

May

0 

0 

2 

7 

7

7 

8

e

8 

8

8 

8 

8 

8 

8

8 

8 

8 

8 

8

S 

7 

7 

7 

7

7 

7 

7 

7 

7 

8

Maximum

O 

O

o

898

0 

699 

730 

225 

8 

65 

181 

159 

15

730

June

8 

S 

S 

8 

8

9 

9 

20 

48 

48

48 

46 

46 

46 

23

5 

5 

5 

31 

54

54 

54 

54 

54 

46

28 

3 

3 

29 

65

July

65 

46 

17

h5 

h5

h5 

4 

h5 

h5 

f!2

f33 

f55 

h79 

h.79 

f!35

f!81 

f!68 

150 

150 

148

148 

141 

128 

127 

127

127 

126 

120 

106 

105 

93

Minimum

O 

O

0

0

o

0 

0 

0 

0 

3 

4 

25 

6

0

Aug.

64 

64 

64 

64 

64

64 

64 

104

lls

127

141 

159 

159 

156 

150

150 

147 

135 

105 

90

90 

79 

54 

54 

54

54 

54 

54 

54 

54 

25

Mean

O 

O 

0

120

0 

317 

144 

36.6 

6.9 

S9.1 

S6.9 

9O.6 

8.2

62.4

Sept.

12 

15 

12 

12 

12

11 

11 

10 

10 

9

8 

8 

7 

7 

6

6 

6 

6 

6 

6

6 

6 

6 

6 

6

7 

7 

7 

8 

8

Run-off In 

acre-feet

0 

0 

0

87,000

0 

17,600 

8,840 

5,160 

424 

1,730 

5,350 

5,580 

490

45,170

h Compu arge computed from partly estimated gage-heights.
WEISER RIVER BASIN 

Crane Creek at mouth, near Weiser, Idaho

195

Location.- Water-stage recorder and concrete control, lat. 44°18', long. 116°47', in sec.

14, T. 11 N., R. 4 W., just downstream from steel highway bridge at Harris Ranch, a

quarter of a mile upstream from mouth, and 10 miles northeast of Weiser. 

Drainage area.- 288 square miles. 

Hecords available.- July 1920 to September 1941. 

Average discharge.- 20 years (1921-41), 71.5 second-feet. 

Extremes.- Maximum discharge during year, 1,070 second-feet Mar. 2 (gage height, 5.57

reet); minimum, 2 second-feet May 3, 4 (gage height, 1.74 feet).

1920-41: Maximum discharge, 2,350 second-feet about Feb. 7, 1925 (gage height,

6.80 feet, from well-defined marks on gage), from rating curve extended above 1,000

second-feet; minimum, 0.2 second-foot May 26, 1931; minimum gage height, 1.30 feet

Jan. 21, 1922.

Remarks.- Records good except those for Oct. 31 to Mar. 11 which are fair. Flow 

 regulated by Crane Creek Reservoir (see p. 193). Several small ditches divert above

station for irrigation.

Rating table, water year 1940-41 (gage height, In feet, and discharge, 

in second-feet)

1.6 

l.S 

2.0 

2.3

0.6

4

11

2.6 

2.9 

3.2 

3.5

52

81

117

163

3.8 

4.1 

4.4 

4.7

223

304

410

545

5.0 705

5.3 890

5.6 1,110

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

1 

8 

17 

9 

6

5 

5 

5 

4 

4

4 

4 

4 

4 

4

4

4 

4 

4 

4

4 

4 

4 

5 

12

8 

6 

6 

11 

24 

fS8

Nov.

a 40 

a50 

f45 

f!6 

f8

f6 

10 

20 

f!2 

f9

7 

1 

6 

5 

f4

f4 

f4 

4 

4 

4

4 

4

4 

4 

4

4 

5 

5 

24 

46

Dec.

f25 

fS8 

f33 

f28 

20

15 

12 

10 

8 

7

5 

5 

4 

5 

5

5 

5 

5 

6 

11

15 

14 

a25 

a40 

a40

a70 

a!50 

f35 

20 

IV 

14

Jan.

11 

a9 

a8 

a7 

7

7 

7 

6 

6 

5

5 

6 

6 

6 

8

S 

alO 

all 

12 

15

17 

a20 

a25 

alOO 

h280

245 

9V 

58 

a 40 

a30 

a20

Feb.

al5 

13 

13 

13 

13

14 

a25 

a25 

34 

93

606 

890 

S58 

a880 

a865

858 

825 

V65 

765 

666

269 

136 

162 

795 

735

795 

795 

890

Month

Oct 

Hoi 

Dec

C

Jar 

Pel 

Max

Api 

Maj 

Jur 

Ju] 

Auj 

Sei

H

alendar year 194 <?. .....................

ater year 1940-4

Mar.

995 

995 

925 

890 

S58

65S 

223 

f27 

f!7 

h!7

a!5 

13 

13 

12 

11

11 

10 

10 

10 

9

8 

8 

8 

7 

7

7 

6 

10 

56 

56 

55

Apr.

55 

74 

179 

110 

123

197 

197 

159 

80 

60

85 

212 

223 

233 

240

166 

58 

53 

52 

50

46 

30 

20 

19 

17

18 

17 

9 

4 

4

Secondfoot -days

222 

369 

682

52,609

1,092 

12,813 

5,947 

2,790 

173 

949 

2,502 

2,661 

351

30,551

May

4 

4 

3 

S 

4

5 

5 

6 

5 

5

5 

4 

4 

5 

4

5 

5 

5 

5 

5

5 

6 

6 

6 

6

6 

8 

8 

8 

11 

12

Maximum

28 

50 

150

1,390

280 

890 

995 

840 

12 

59 

16V 

149 

18

995

June

12 

11 

11 

11 

11

12 

18 

22 

44 

4S

47 

48 

48 

48 

43

15 

12 

12 

16 

52

55 

55 

55 

53 

50

39 

19 

12 

11 

59

July

60 

52 

34 

13 

11

10 

8 

7 

7 

6

17 

37 

68 

70 

99

167 

163 

13V 

13V 

136

137 

132 

117 

116 

116

116 

121 

116 

100 

98 

94

Minimum

4 

4 

4

1

5 

13 

6 

4 

3 

11 

6 

44 

8

3

Aug.

62 

60 

60 

a58 

57

58 

57 

78 

104 

112

127 

149 

149 

149 

140

140 

138 

137 

109 

89

88 

86 

53 

52 

52

52 

52 

50 

49 

50 

44

Mean

7.2 

12.3 

22.0

144

3S.2 

458 

192 

93.0 

5.6 

31.6 

80.7 

85-8 

11.7

83.7

Sept.

13 

18 

IV 

15 

15

14 

13 

13 

12 

12

12 

11 

11 

11 

11

* 11 

11 

11 

11 

12

11 

8 

S 

9 

9

10 

10 

10 

11 

11

Run- off in 

acre- feet

440 

732 

1,350

104,400

2,1VO 

25,410 

11,800 

5,530 

343 

1,880 

4,960 

5,280 

696

60,590

a Ho gage-height recordj discharge computed on basis of weather records, records for Weiser River 

stations and for Crane Creek near Midvale.

f Fragmentary gage-height record; discharge computed on basis of partly estimated gage-height 

record.

h Computed from staff-gage readings.
196 WEISER RIVER BASIN

Weiser Irrigation District canal near Welser, Idaho

Location.- Water-stage recorder, lat. 44°15', long. 115°51', in sec. 32, T. 11 N., R. 4

 W., 3t miles downstream from headworks of canal and 7 miles east of Weiser.

Records available.- April 1920 to September 1941.

Extremes.- Maximum discharge during year, 202 second-feet July 10 (gage height, 3.05

 feet)'; minimum recorded, 0.5 second-foot Mar. 30 (gage height, 0.08 foot). A lesser 

flow may have occurred during winter period of no record.

1920-41: Maximum discharge, 221 second-feet July 15, 1932; maximum gage height, 

3.43 feet May 5, 1926; no flow at times when gates were closed.

Remarks.- Records good. One farm lateral diverts a quarter of a mile above station.

 Canal diverts water from Weiser River in Sec. 35, T. UN., R. 4 W., 3i miles above 

station for Irrigation of about 7,000 acres included In projects of Weiser and 

Weiser Bench Irrigation Districts near Weiser.

Cooperation.- Gage-height record furnished by Weiser Irrigation District.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

£8 

29 

30 

31

Oct.

75 

59 

a38 

a38 

a38

a37 

a 37 

37 

37 

37

37 

37 

36 

36 

36

a36 

a36 

36 

36 

36

36 

36 

36 

36 

37

39 

38 

37 

37 

37 

38

Nov.

a40

a42 

a 42 

a41 

40

40 

40 

40 

40 

40

40 

39 

37 

36 

35

34 

34

Dec.

18 

18 

18 

18

17 

17 

16 

16

Jan.

3.2 

3.2

3.2 

3.2 

3.5 

3.8 

3.2 

3.2

Feb.

Month

Dot 

No\ 

Dec

C

Jar 

Pel 

Mat

Apr 

Maj 

Jur 

Ju3 

Aug 

Set

11

ember 1- 

ember 2-

alendar 

uary 24-

year

 31

ater year

Mar.

8.4 

8.4 

8.4 

8.4 

9.1

8.4 

8.4 

8.4 

8.4 

8.4

8.4 

8.4 

8.4 

S.4 

a8.2

a8.0 

7.8 

8.4 

8.4 

9.1

9.1 

9.1 

9.1 

5.6 

2.0 

4.9

Apr.

4.5 

4.5 

4.5 

4.5 

4.5

a4.9 

5.3 

47 

81 

93

97 

98 

104 

107 

117

124 

128 

135 

143 

149

152 

161 

167 

171 

179

186 

188 

189 

190 

190

Secondfoot-days

1,202 

660 

138

_

26.5

208.0 

3,228.7 

5,827 

4,893 

5,535 

5,260 

3,896

-

May

190 

190 

190 

191 

186

186 

186 

186 

191 

190

190 

191 

190 

189 

183

182 

184 

184 

182 

183

187 

189 

189 

189 

190

190 

190 

190 

189 

189 

191

Maximum

75 

42 

18

_

3.8

9.1 

190 

191 

191 

200 

186 

154

-

June

190 

190 

189 

188 

189

189 

93 

a!6 

a!6 

a84

172 

190 

190 

189 

189

186 

186 

190 

135 

67

173 

186 

186 

186 

189

191 

189 

189 

184 

182

July

1B1 

182 

180 

183 

184

184 

182 

186 

190 

196

200 

192 

196 

183 

167

196 

194 

180 

173 

163

166 

177 

166 

160 

163

161 

166 

168 

172 

172 

172

Minimum

36 

34 

16

_

3.2

2.0 

4.5 

182 

16 

160 

139 

109

-

Aug.

168 

167 

165 

165 

168

160 

146 

139 

161 

163

170 

182 

185 

186 

186

186 

186 

183 

174 

172

174 

174 

169 

166 

152

171 

173 

172 

170 

163 

164

Mean

38.8 

38.8 

17.2

_

3.31

8.00 

108 

188 

163 

179 

170 

130

-

Sept.

154 

152 

147 

138 

139

139 

138 

137 

138 

137

137 

136 

J.36 

136 

136

135 

136 

135 

129 

124

124 

124 

118 

110 

111

111 

111 

110 

109 

109

Run-off In 

acre-feet

2,380 

1,310 

274

_

53

413 

6,400 

11,560 

9,710 

10,980 

10,430 

7,730

-

a Ho gage-height record; discharge computed on basis of data furnished by observer and records 

for Weiser River near Weiser.
WESIER RIVER BASIN 197

Mann Creek near Weisor, Idaho

Location.- Staff gage, lat. 44°24', long. 116°54', In sec. 11, T. 12 II., R. 5 W., at 

Richards Ranch, 12 miles upstrean from mouth and 11 miles northeast of Welser.

Drainage area.- 56 square miles.

Records available.- March 1911 to September 1913, July to November 1920, April 1937 to 

September 1941.

Extremes.- Maximum discharge observed during year, 316 second-feet Mar. 31 (gage height, 

3.04 reet); minimum observed, 4.1 second-feet Oct. 18-21; minimum gage height observed, 

1.04 feet Aug. 8-10.

1911-13, 1920, 1937-41: Maximum discharge, 1,540 second-feet Mar. 27, 1940 (gage 

height, 5.45 feet, from high-water mark), from rating curve extended above slope-aiea 

determination at gage height 4.21 feet; no flow Aug. 18 to Sept. 22, 1937, July 31 to 

Sept. 13, 1939.

Remarks.- Records fair. Gage read twice daily. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

9.9 

11 

12 

9.5 

6.9

6.0 

5.7 

5.1 

4.8 

4.5

4.5 

4.5 

4.5 

4.5 

4.5

4.5 

4.5 

4.3 

4.1

4.1

4.1 

4.5 

4.5 

5.4

16

9.9 

9.5 

7.5 

15 

15 

12

Nov.

12 

38 

18 

14 

13

14 

25 

22 

21 

15

14 

14 

14

11 

11

10 

10 

10 

9.5 

8.7

10 , 

b9.0 

b8. 5 

b9.0

9.5

9.5 

9.5 

11 

11 

11

Dec.

9.5 

10 

10 

11 

11

9.5

11 

11 

11 

9.9

b9.0 

ba.O 

bS.O 

b8.0 

blO

bll 

b!3 

b!6 

b20 

21

12 

13 

61 

31 

32

28 

118 

37 

18 

21 

20

Jan.

22 

16 

16 

16 

16

16 

14 

13 

12 

12

12 

bll 

12 

16 

13

12 

13 

14 

14 

16

14 

16 

16 

26 

e90

62 

33 

28 

27 

26 

19

Feb.

20 

20 

19 

18 

21

25 

27 

26 

26 

30

SO 

46 

40 

30

28

24 

26 

26 

26

27

27 

45 

55 

103 

65

62 

60 

82

Month

Oct 

' NOT 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Be]

f

alendar year 19' 0......................

ater year 1940-4

Mar.

127 

198 

135 

103 

96

94 

106 

115 

126 

113

111 

104 

85 

80 

80

101 

127 

178 

155 

145

136 

136 

111 

115 

136

149 

168 

188 

220 

290 

278

Apr.

d278 

d266 

266 

242 

278

209 

188 

198 

188 

188

168 

157 

160 

168 

164

157 

136 

124 

111 

111

111 

113 

111 

127 

145

157 

168 

153 

133 

158

Secondfoot-days

222.8 

402.2 

618.9

21,490.4

&' 

1,01 

4.3C 

5,i: £ ?""

96 

4( 

2C

IE

13 

34 

)6 

53 

2 

6 

)0.2 

JO.l 

2.1

16,390.3

May

158 

153 

149 

145 

142

106 

99 

90 

78 

76

83 

93

90 

77 

66

71 

66 

62 

51 

50

36 

33 

34 

32 

29

29 

35 

30 

22 

23 

24

Maximum

16 

38

118

1,120

90 

103 

290 

278 

158 

57 

25 

11 

9.1

290

June

23 

21 

21 

20

18

21 

45 

57 

42 

39

38 

36 

34 

34 

32

30 

32 

35 

47 

36

34 

31 

28 

27 

27

27 

30 

32 

39 

30

July

25 

23 

21 

IS 

17

16 

15 

16 

16 

16

14 

14 

12 

12 

12

9.9 

9.9 

9.9

gig

9.5 g.i

8.7 

8.3 

8.3

9.1 

11 

9.9 

12 

9.5 

8.3

Minimum

4.1 

8.5 

8.0

.2

11 

18 

80 

111 

22 

18 

8.3 

4.8 

5.1

4.1

Aug.

7.5 

6.6 

6.6 

6.6 

6.0

6.0 

6.0 

5.1 

4.8 

5.1

V.2 

11 

7.5 

6.0 

5.4

5.1 

5.1 

6.3 

7.5 

7.5

6.3 

5.7 

6.3 

6.0 

6.3

7.9 

6.3 

6.3 

6.3 

7.5 

6.3

Mean

7.19 

13.4 

20.0

5S.7

20.7 

38.7 

139 

171 

72.0 

32.2 12. g

6.45 

6.07

44.9

Sept.

6.3 

7.9 

9.1 

7.9 

6.9

6.0 

6.0 

6.0 

6.0 

6.0

5.4 

5.4 

5.4 

5.4 

6.6

6.3 

5.7

5.1 

7.2, 

6.0

5.7 

5.7 

5.7 

5.4 

5.7

5.7 

5.7 

5.7 

5.1 

5.1

Run-off In 

acre-feet

442 

798 

1,230

42,630

1,280 

2,150 

6,540 

10,180 

4,430 

1,920 

794 

397 

361

32,520

b Stage-discharge relation affected by Ice.

d Doubtful gage-height record! discharge computed on basis of assumed error In gage readings, 

e Gage reading not representative of average for days discharge computed on basis of gage 

reading, observer's notes,, and records for nearby stations.
198 BURNT RIVER BASIN

Unity Reservoir near Unity, Oreg.

Reference mark, lat. 44°30', long. 118°11', in SWi sec. 21, T. 12 S., R. 37 E., at 

Unity Dam on Burnt River, Just downstream from Job Creek, half a mile downstream from 

confluence of North, Middle, and South Forks of Burnt River, and 4& miles north of 

Unity. Elevation of reference mark is 3,828.0 feet (revised) above mean sea levej. 

(datum of Bureau of Reclamation). Drainage area, 309 square miles. Records available, 

March 1938 to September 1941. Maximum contents observed during year, 25,220 acre-feet 

Apr. 11 to May 26 (elevation, 3,820.0 feet); minimum observed, 5,364 acre-feet Oct. 1, 2 

(elevation, 3,792.7 feet). Maximum contents observed during period 1938-41, 25,570 acrefeet May 5, 1939 (elevation, 3,820.35 feet); minimum observed, 2,710 acre-feet Oct. 5, 

1938 (elevation, 3,787.0 feet).

Reservoir is formed by earth-fill dam, completed by Bureau of Reclamation in 1937; 

storage began Feb. 19, 1938. Capacity, 25,220 acre-feet between elevations 3,776.5 

feet (bottom of outlet gates) and 3,820.0 feet (top of radial gates on spillway when 

closed). Dead storage, 600 acre-feet below elevation 3,776.5 feet. Records given herein represent usable contents. Water used for irrigation of lands in Burnt River irrigation district near Hereford and Bridgeport. Water surface elevation measured or estimated once dally by employee of Burnt River Irrigation District. Monthly contents computed from capacity table based on surveys by Bureau of Reclamation.

Monthly elevation and contents, water year October 1940 to September 1941

Date

Calendar year 1940...

Water year 1940-41...

Elevation 

(feet) "

-

-

Contents 

(acre-feet)

10,900

-

-

Change in contents 

during month 

(acre-feet)

+1,588

+1,673

+3,736

+210

+3,438
BURNT RIVER BASIN 199

Burnt River near Hereford, Oreg.

Location.- Water-stage recorder and concrete weir with steel crest, lat. 44°30', long. 

118 U 11', in SEi sec. ?,l, T. 12 S., R. 37 E., at entrance of canyon, 1,250 feet downstream from Unity Dam, 0.7 mile downstream from South Fork of Burnt River and 7 miles 

west of Hereford.

Records available.- March 1915 to September 1916, October 1928 to September 1941 

(incomplete prior to water year 1929-30).

Drainage area.- 309 square miles.

Average discharge.- 12 years (1929-41), 60.2 second-feet.

Extremes.- Maximum discharge during year, 327 second-feet Apr. 13 (gage height, 2.61 

feet); no flow Oct. 1.

1915-16, 1928-41: Maximum discharge, 1,510 second-feet Apr.-14, 1936 (gage height, 

6.91 feet); minimum before construction of Unity Reservoir Dam, 1.6 second-feet Aug. 

31, 1935 (gage height, 0.92 foot).

Remarks.- Records good. Many small diversions above station for irrigation. Some

regulation from reservoir (capacity, about 700 acre-feet) on South Fork of Burnt River, 

3 miles above mouth (capacity about 700 acre-feet), and by Unity Reservoir (see 

preceding page).

Rating table, water year 1940-41 (gage height, in feet, and discharge, in second-feet)

0.0 0 0.4 18 1.0 72 1.6 146 2.3 267 

.1 3.0 .6 34 1.2 95 l.S 177 2.6 325 

.2 7.0 .8 51 1.4 119 2.0 212

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

8 

9 

10

11 

12 

13 

14 

J.5

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

0 

3.0 

1.8 

2.7 

4.2

6.6 

6.6 

3.4 

3.8 

3.8

5.4 

5.8 

5.8 

7.0 

7.5

6.2 

5.8 

8.0 

11 

12

12 

11 

11 

9.0 

7.5

7.0 

7.0 

7.5 

7.5 

7.5 

8.0

Nov.

8.0 

8.5 

8.5 

8.5 

8.5

8.5 

8.5 

8.5 

8.5 

8.5

8.5 

S.5 

8.5 

8.5 

8.5

8.5 

8.5 

8.5 

8.5 

8.5

8.5 

8.5 

9.0 

8.0 

8.0

S.O 

8.0 

8.0 

8.0 

8.0

Dec.

8.0 

8.0 

8.0 

8.0 

8.0

8.5 

8.5 

8.5 

8.5

8.5

8.5 

8.5 

8.5

8.5 

8.5

8.5 

9.0 

9.0 

9.0 

9.5

9.0 

9.0 

9.0 

9.0 

9.0

9.0 

9.0 

9.0 

9.0 

9.0 

9.0

Jan.

9.0 

9.0 

9.0 

7.0 

5.4

5.4 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.4

5.8 

5.8 

5.8 

5.8 

5.8

6.2 

6.2 

6.2 

6.2 

7.5

9.5 

14 

19 

23 

25 

30

Feb.

33 

35 

35 

35 

34

35 

37 

37 

39

40

41 

41 

40 

40 

39

37 

38 

39 

39 

40

43 

58 

55 

59 

60

60 

58 

72

Month

Del 

No\ 

Dec

C

Jar 

Fet 

Mar 

API 

Ma3 

Jtur 

Jvd 

Aug 

Sei

11

alendar year 19'to......................

ater year 1940-'

Mar.

119 

152 

167 

169

180

199 

214 

243 

265

177

149 

161 

164 

167 

169

174 

186 

203 

217 

228

235 

239 

241 

241 

159

46 

48 

47 

48 

51 

53

Apr.

55 

57 

57 

57 

116

179 

180 

120 

59 

56

182 

248 

278 

a296

315

313 

290 

259 

258 

256

175 

152 

149 

148 

145

143 

142 

140 

139 

138

Secondfoot-days

205.4 

251.5 

269.0

20,786.7

275.2 

1,219 

5,111 

5,102 

4,308 

2,927 

2,690 

2,826 

1,068.1

26,252.2

May

180 

203 

319 

317 

317

315 

311 

309 

273 

115

36 

54 

6S 

54 

52

50 

49

48 

46 

140

135 

132 

123 

123 

S3

71 

79 

76 

75 

75 

75

Maximum

12 

9.0 

9.5

448

30 

72 

265 

315 

319 

107 

105 

126 

107

319

June

75 

74 

71 

95 

107

105 

101 

99 

97 

97

96 

101 

106 

105 

103

103 

101 

101 

100 

100

100 

100 

100 

100 

99

99 

99 

99 

97 

97

July

96 

96 

96 

95 

79

68 

78 

76 

76 

74

73 

72 

72

71 

70

70 

70 

89 

105 

102

102

101 

100 

100 

100

97 

96 

94 

94 

90 

88

Aug.

87 

85 

103 

99 

68

65 

63 

63 

62 

60

60 

57 

58 

103 

89

94 

126 

126 

124 

120

112 

109 

105 

105 

105

103 

101 

97 

95 

93 

89

Sept.

85 

81 

75 

72 

71

68 

65 

63 

62 

107

107 

32 

2.1 

l.S 

1.8

1.5 

1.5 

1.2 

1.2 

1.2

.9 

.9 

.9 

.9 

.9

5.8 

7.5 

37 

57 

56

Minimum Mean ^re-feet"

0 6.63 407 

8.0 8.38 499 

8.0 8.68 534

0 56.8 41,220

5.4 8.88 546 

33 43.5 2,420 

46 165 10,140 

55 170 10,120 

36 139 8,540 

71 97.6 5,810 

68 86.8 5,340 

57 91.2 5,610 

.9 35.6 2,120

0 71.9 52,090

a No gage-height record; discharge Interoolated.
200 POWDER RIVER BASIN

Powder River at Salisbury, Oreg.

Location.- Water-stage recorder, lat. 44°39', long. 117°52', in NEi sec. 36 T. 10 S., R.

 39 K., 700 feet downstream from Salisbury siding of Sunpter Valley R. R. and Stices 

Gulch and 8i miles south of Baker. Datum of gage is 3,633.84 feet above mean sea 

level (Oregon State Highway Department bench mark).

Drainage area.- 230 square miles.

Records available.- December 1903 to August 1914 and October 1928 to September 1941, in 

reports of Geological Survey. January 1904 to July 1914 and June 1926 to September 

1936, in reports of State engineer.

Average discharge.- 23 years (1904-13, 1926-28, 1929-41), 108 second-feet.

Extremes.- Maximum discharge during year, 695 second-feet May 2 (gage height, 4.72 feet);

 mininum, 11 second-feet Oct. 1 (gage height, 1.30 feet).

1903-14, 1926-41: Maximum discharge, 1,820 second-feet Mar. 20, 1910 (gage height,

7.05 feet, site and datum then in use); no flow Aug. 31, 1909, Sept. 7, 1931. 

Remarks.- Records good except those for periods of ice effect, which are poor. Diversions

above station for irrigation.

Rating tables, water year 1940-41, except periods of Ice effect (gage height. In feet,

Oct. 1 to Apr. 2 Apr. 3 to Sept. 30

1.3 11 2.6 194 1.4 20 2.9 261 

1.4 17 2.9 255 1.6 36 3.2 328 

1.6 35 3.2 320 1.8 60 3.5 39V 

1.8 58 3.5 389 2.0 89 3.8 468 

2.0 87 3.S 460 - 2.3 140 4.2 565 

2.3 138 2.R 199 4.7 690

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

V 

8 

9

10

11 

12 

13 

14 

15

16 

IV 

18 

19 

20

21 

22 

23 

24 

25

26 

2V 

28 

29 

30 

31

Oct.

13 

33 

33 

31 

29

27 

23 

19 

19

IS

17 

19 

16 

15 

16

16 

16 

16 

16 

16

16 

16 

16 

23 

. 26

3V 

48 

35 

35 

34 

37

Nov.

39

61 

50 

44 

44

46 

59 

58 

56 

51

48 

45 

46 

43 

b44

b43 

43 

b41 

b39 

b3V

36 

35 

b35 

b34 

33

b34 

35 

39 

4V 

51

Dec.

52 

53 

53 

54 

59

59

56 

54 

54 

48

39 

b30 

b20 

b21 

b23

b25 

b28 

b31 

b36 

b41

*b50 

54 

56 

56 

53

53 

56 

53 

52 

50 

b48

Jan.

b44 

b41 

b40 

b45 

b56

b55 

b54 

b53 

52 

50

48 

4V 

4V 

48 

48

4V 

46 

48 

50 

52

53 

54 

54 

56 

53

50 

b48 

46 

b48 

b49 

b48

Feb.

46 

48 

b48 

b49 

b48

50 

b51 

b52 

53 

56

57

57 

57 

56 

b55

b54 

56 

64 

65 

65

71 

76 

82 

89 

82

81 

8V 

138

Month

Oct

No-s 

Dec

C

Jar 

Pet 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

HI

ober

alendar year 19^to... ...................

tember. ................................

ater year 1940-4 1.. .. ...... .. ... .

Mar.

200 

179 

186 

179 

190

190 

200 

244 

283 

285

283 

272 

251 

226 

226

263 

329 

394 

373 

343

316 

305 

289 

266 

259

272 

294 

334 

361 

407 

396

Apr.

400 

450 

434 

402 

386

340 

310 

292 

301 

358

335 

303 

287 

2V6 

279

276 

261 

240 

215 

201

195 

197 

209 

238 

274

292 

310 

326 

346 

379

Secondfoot-days

731 

1,316 

1,41V

37,626.0

1,530 

1,793 

8,595 

9,112 

12,608 

7,189 

2,072 

920 

1,243

48,526

May

548 

632 

630 

565 

509

439 

397 

374 

337 

328

362 

466 

608 

572 

478

427 

408 

381 

337 

294

281 

303 

328 

353 

365

335 

314 

303 

294 

287 

303

Maximum

48 

61 

59

630

56 

138 

40V 

450 

682 

468 

144 

56 

59

682

June

287 

263 

272 

246 

227

261 

468 

374 

337 

303

287 

270 

274 

270 

263

242 

234 

244 

253 

232

201 

179 

163 

159 

165

150 

138 

150 

146 

131

July

122 

136 

144 

126 

107

97 

108 

95 

88 

77

74 

68 

64 

63 

59

54 

50 

48 

47 

43

39 

40 

35 

34 

33

32 

40 

44 

39 

34 

32

Aug.

34 

32 

30 

27 

27

27 

26 

25 

24 

23

24 

27 

27 

26 

26

24 

21 

25 

26 

25

25 

25 

26 

21 

29

39 

39 

39 

44 

56 

51

Minimum Mean

13 23.6 

33 43.9 

20 45.7

1.7 103

40 49.4 

46 64.0 

179 277 

195 304 

281 407 

131 240 

32 66.8 

21 29.7 

26 41 . 4

13 133

Sept.

48 

54 

59 

59 

59

57 

55 

54 

54 

. 46

44 

45 

50 

51 

48

37 

34 

35 

36 

37

35 

31 

28 

26 

27

26 

28 

2V 

26 

2V

Run-off in 

acre-feet

1,450 

2,610 

2,810

74,630

3,030 

3,560 

17,050 

18,070 

25,010 

14,260 

4,110 

1,820 

2,470

96,250

 » VJinter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
POWDER RIVER BASIN 201

Powder River near Robinette, Oreg.

Location.- Staff gage, lat. 44°46', long. 117°04', In SEi sec. 22, T. 93., R. 46 E., 

downstream from all tributaries, 2 miles northwest of Robinette and 2t miles above 

month.

Drainage area.- 1,710 square miles.

Records available.- September 19B8 to September 1941.

Average discharge.- 13 years, 416 second-feet.

Extrenes. - Maximum discharge observed during year, 2,300 second-feet May 14 (gage height, 

4.40 feet); minimum observed, 101 second-feet Aug. 9, 10 (gage height, 0.90 foot). 

1928-41: Maximum discharge observed, 4,180 second-feet June 15, 16, 1933 (gage 

height, 6.9 feet, site and datum then In use); minimum observed, 18 second-feet 

Sept. 2-10, 1930.

Remarks.- Records fair. Many diversions above station for Irrigation, none below. One 

canal with capacity of about 5 second-feet diverts around station on left bank. Gage 

read twice daily.

Rating table, water year 1940-41, except periods of Ice effect (gage heitcht, In feet, 

and discharge. In second-feet)

0.9 101 2.6 810 

1.1 147 3.0 1,070 

1.4 235 3.5 1,450 

1.8 390 4.0 1,900 

2.2 580 4.5 2,400

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

330 

318 

310 

298 

286

282 

246 

222 

216 

186

186 

191 

186 

183 

171

169 

166 

163 

160 

158

152 

150 

152 

330 

580

252 

417 

382 

374 

346 

286

Nov.

318 

555 

458 

394 

378

386 

399

374 

370 

3S6

370 

358 

326 

326 

202

252 

278 

266 

263 

252

263 

274 

286 

266 

235

229 

222 

242 

256

249

Dec.

260 

249 

252 

252 

274

278 

298 

334 

338 

270

216 

177 

b!50 

bllO 

b!20

b!50 

b!80 

209 

235

310

318 

318 

366 

338 

350

354 

810 

555 

476 

350 

346

Jan.

b300 

b280 

b270 

b350 

346

310 

318 

326

314 

298

2S6 

260 

274 

318 

306

322 

334 

358 

358 

458

386 

417 

471 

540 

608

840 

732 

596 

570 

570 

560

Feb.

555 

540 

525 

510 

505

535 

596 

662 

732 

798

935 

702 

652 

668 

624

570 

500 

476 

662 

618

684 

635 

679 

690 

750

714 

714 

916

Month

Oct 

NOT 

Dec

C

Jar 

Fet 

Mai 

Apr 

Ma, 

Jur 

JuJ 

Aug 

Sej

VI

alendar year 19-<10. .....................

fater year 1940-^

Mar.

1,370 

1,580 

1,350 

1,250 

1,210

1,270 

1,290 

1,220 

1,160 

1,160

1,180 

1,130 

1,130 

1,100 

1,040

1,010 

1,010 

1,110 

1,290 

1,310

1,250 

1,230 

1,160 

1,120 

1,060

1,080 

1,110 

1,180 

1,190 

1,270 

1,350

Apr.

1 

1 

1 

1 

2

2

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1

1 

1

1

1

Secondfoot-days

7,848 

9,533 

9,243

189,209

12,676 

18,147 

37,170 

40,573 

48,690 

50,400 

14,069 

4,570 

6,453

259,472

620 

710 

800 

840 

000

050 

850 

660 

650 

540

510 

480 

430 

390 

350

290 

130 

080 

080 

,070

050 

010 

922 

864 

883

922 

922

980 

070 

520

May

1,560 

1,400 

1,530 

1,570 

1,560

1,500 

1,460 

1,480 

1,440 

1,540

1,660 

1,840 

2,230 

2,200 

1,950

2,000 

1,760 

1,620 

1,550 

1,520

1,470 

1,390 

1,430 

1,660 

1,690

1,490 

1,430 

1,200 

1,160 

1,100 

1,300

Maxi^

580 

555 

810

2,750

840 

935 

1,580 

2,050 

2,230 

2,150 

1,230 

232 

346

2,230

June

1,280 

1,240 

1,390 

1,420 

1,470

1,520 

1,980 

1,900 

1,860 

1,370

1,920 

2,050 

2,150 

1,990 

1,950

1,970 

1,900 

1,860 

1,830 

1,780

1,770 

1,840 

1,750 

1,680 

1,500

1,280 

1,200 

1,340 

1,400 

1,310

July

1,230 

1,230 

1,180 

1,040 

1,010

876 

798 

668 

608 

495

412 

350 

S94 

294 

252

222 

209 

225 

216 

246

225 

225

197 

186 

186

194 

197 

213 

222 

203 

166

Aug.

155 

152 

150 

140 

135

140 

125

119 

105 

103

119 

130 

135 

137 

128

128 

125 

121 

145 

152

142 

142

147 

145 

163

191 

197 

209 

229 

232 

229

Minimum Mean

150 253 

222 318 

110 298

43 517

260 409 

476 648 

1,010 1,199 

864 1,352 

1,100 1,571 

1,200 1,680 

166 454 

103 151 

166 215

103 711

Sept.

225 

263 

346 

326

278

222 

235 

225 

209 

206

197 

209 

216 

219 

229

216 

197 

194 

191 

194

219 

203 

200 

188 

183

174 

180 

174 

166 

169

Run- off In 

acre-feet

15,570 

18,910 

18,330

375,300

25,140 

35,990 

73,730 

80,480 

96,580 

99,970 

27,910 

9,260 

12,800

514,700

b Stage-discharge relation affected by Ice.
202 IMNAHA RIVER BASIN

Imnaha River at Imnaha, Oreg.

Location.- Water-stage recorder, lat. 45°34', long. 116°51', In SWi sec. 16, T. 1 N., 

K. 4b K., at Imnaha, three-eights of a mile downstream from sheep Creek.

Drainage area.- 705 square miles.

Records available.- June 1928 to September 1941.

Average discharge.- 13 years, 407 second-feet.

Extremes.- Maximum discharge during year, 2,740 second-feet June 8 (gage height, 4.85 

feet); minimum, 50 second-feet Dec. 14 (gage height, 1.09 feet).

1928-41: Maximum discharge, 4,800 second-feet May 1, 1938 (gage height, 6.27 

feet), from rating curve extended above 3,000 second-feet; minimum, 35 second-feet 

Jan. 26, 1936, Jan. 8, 1937,

Remarks.- Records good except those for periods of Ice effect, which are fair. Diversions 

above station for Irrigation.

Rating table, water year 1940-41, except periods of ice effect (gage height, in feet, 

and discharge, in second-feet)

1.2 65 2.0 293 3.2 950 4.5 2,300 

1,4 102 2.4 475 3.6 1,270 5.0 2,930 

1.7 1S2 2.S 690 4.0 1,700

Discharge, iri second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26

27 

28 

29 

30

31

Oct.

273 

223 

327 

344 

314

2S5 

257 

242 

234 

223

213 

202 

196 

189 

182

179 

173 

167 

161 

15S

158 

158 

158 

173 

440

335 

344 

31S 

310 

318 

327

Nov.

340 

425 

465 

445 

420

416 

435 

525 

505 

465

435 

389 

327 

366 

34S

340 

327 

31S 

297 

285

289 

269 

234 

269 

246

234 

231 

234 

234 

242

Dee.

223 

220 

223 

223 

227

23S 

234 

231 

227 

202

185 

130 

b90 

b65 

b!40

b!90 

b230 

b240 

257 

242

249 

242 

249 

277 

310

297 

327 

310 

285 

269 

249

Jan.

189 

161 

158 

b220 

216

223 

216 

206 

199 

1S2

176 

173 

1S9 

206 

206

199 

196 

199 

209 

202

202 

199 

199 

199 

202

213 

196 

196 

176 

1S9 

199

Feb.

199 

196 

185 

1S2

176

1S5 

199 

192 

196 

199

209

216 

206 

199 

185

182 

199 

192 

209 

202

202 

202 

209 

227 

231

223 

227 

281

Month

Oct

No\ 

Dec

C

Jar 

Fet

Mar 

Apr 

Maj 

Jur 

Ju] 

Aug 

Set

H

alendar year 19. 0... ...................

ater year 1940-'

Mar.

768 

915 

750 

630

564

500 

465 

470 

490 

485

475 

465 

445 

402 

398

389 

416 

500 

525 

520

490 

480 

465 

450 

425

455 

520 

608 

679 

887 

915

Apr.

1

1

1

Secondfoot-days

7,5S1 

10,355

7,081

162,259

6,095 

5,710 

16,926 

27,625 

42,244 

45,962 

18,630 

6,261 

5,686

200,156

936 

050 

080 

9S8 

020

929 

S45 

79S 

S10 

S80

S45 

817 

S38 

S59 

922

873 

S17 

750 

702 

679

684 

708 

780 

873 

972

,030 

180 

240 

,310 

,410

May

1,700 

1,700 

1,680 

1,560 

1,440

1,240 

1,090 

1,030 

972 

972

1,120 

1,590 

1,SSO 

1,720 

1,420

1,340 

1,350 

1,260 

1,080 

1,000

1,060 

1,190 

1,340 

1,560 

1,560

1,560 

1,600 

1,340 

1,220 

1,240 

1,430

Maximum

440 

525 

327

1,640

223 

2S1 

915 

1,410 

1,SSO 

2,620 

1,250 

261 

242

2,620

June

1,400 

1,310 

1,310 

1,310 

1,250

1,250 

1,S80 

2,620 

2,440 

2,060

1,S90 

1,S60 

1,930 

1,SSO 

1,800

1,640 

1,560 

1,680 

1,620 

1,450

1,280 

1,240 

1,300 

1,250 

1,110

95S 

S94 

1,OSO 

1,380 

1,330

July

1,240 

1,180 

1,250 

1,140 

1,070

9SS 

943 

S66 

76S 

696

640 

613 

569 

536 

500

480 

450 

420 

389 

394

371 

34S 

340 

327 

310

293 

306 

327 

322 

2S5 

269

Aug.

261 

249 

23S 

223

220

213 

199 

196 

192 

192

202 

223 

'209 

192 

1S5

179 

176 

170 

170 

192

1S5 

179 

192 

189 

196

216 

227 

202 

196 

199 

199

Minimum Mean

15S 245 

231 345 

65 22S

65 443

15S 197 

176 204 

3S9 546 

679 921 

972 1,363 

894 1,532 

269 601 

170 202 

15S 190

65 548

Sept.

182 

196 

242 

220 

206

196 

202 

209 

192 

185

182 

196 

192 

192 

192

185 

179 

1S2 

223 

206

199 

189 

182

173 

170

167 

164 

164 

161 

15S

Run- off In 

aere-feet

15,040 

20,540 

14,040

321,800

12,090 

11,330 

33,570 

54,790 

83,790 

91,160 

36,950 

12,420 

11,280

397,000

b Stage-discharge relation affected by ice.
SALMON RIVER BASIN 

Salmon River near Obsidian, Idaho

203

Location.- Water-stage recorder, lat. 43°58', long. 114°48', in sec. 3, T. 7 N., R. 14 

E.,STree-eighths of a mile below irrigation diversion dam, 1 mile upstream from Lost 

Creek, and 2i miles southeast of Obsidian.

Drainage area.- 94.7 square miles.

Records available.- November 1940 to September 1941.

Extremes.- Maximum discharge during period, 368 second-feet May 26; maximum gage height, 

4.74 reet (ice Jam) sometime between Dec. 5 and Jan. 23; minimum discharge recorded, 

4 second-feet July 21 to Aug. 11.

Remarks.- Records good except those for periods of ice effect or faulty or no gage-height 

record, which are poor. Several diversions above station for irrigation.

Rating table, Nov. 7, 1940, to Sept. 30, 1941, exceot periods of ice effect (gage height,

in feet, and discharge, in second-feet) 

(Shifting-control method used Nov. 7 to Dec. 5, Jan. 23-26)

1.4

1.6 

1.8 

2.0 

2.2

3.6

9.6

20

2.4 

2.6 

3.0 

3.4 

3.8

74

101

180

279

384

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov.

34 

32 

32 

a28

a27 

a27 

a27 

a25 

24

a24 

24 

24

. b23

27 

28 

a27

Dec.

a27 

a27 

26 

26 

a26

a25 

a25 

a25 

a25

b21

Jan.

b20 

b20

a20

a 18 

18 

18 

19

18 

> a!8

Feb.

}. 

17 

17 

18 

18

18 

20 

a20 

19 

a!9

a 19 

a!9 

a!9 

20 

a20

a20 

20 

22 

22 

a23

a23 

a23 

a22

Month

Oct 

No\ 

Dec

C

Jar 

Pel 

Ma i 

Api 

Maj 

Jur 

Jul

Aue

Sei 

1

rember 7-

alendar year

he peric ij

Mar.

22 

22 

21 

a20 

20

a20 

a21 

a23 

a25 

a24

a23 

a23 

a21

. a20

I 

> a25

Apr.

> a30

> a35

> a40

31

30 

27 

27 

26 

29

31 

36 

38 

38 

42

48 

61 

78 

100 

117

Secondfoot-days

617 

694

_

601 

540 

680 

1,244 

6,654 

5,766 

409 

465 

938

-

May

126 

125 

138 

146 

148

123 

119 

125 

119 

130

173 

254 

289 

256 

234

219 

222 

239 

209 

194

206 

236 

279 

310 

313

344 

336 

282 

262 

252 

252

Maximum

34

-

23

117 

344 

259 

45 

29 

42

-

June

222 

197 

214 

216 

212

214 

236 

259 

242 

226

229

234 

246 

252 

252

242 

224 

222 

214 

192

173 

162 

155 146' 

132

117 

112 

104 

70 

50

July

45 

39 

36 

35 

31

29 

27 

25 

18 

14

9 

9 

8 

8 

6

6 

5 

5 

5 

5

4

4 

4 

4 

4

4 

4 

4 

4 

4 

4

Minimum

_

-

119 

50 

4 

4 

24

-

Aug.

4 

4 

4 

4 

4

4

4

4 

4 

4

4 

14 

16 

15 

14

14 

14 

16 

15 

14

21 

29 

29 

28 

28

28 

27 

26 

, 24 

25 

24

Mean

25.7 

22.4

_

19.4 

19.3 

21.9 

41.5 

215 

192 

13.2 

15.0 

31.3

-

Sept.

24 

25 

26 

25 

24

24 

24

24 

24 

24

24 

25 

24 

24 

26

31 

40 

39 

42 

41

40 

39 

39 

38 

37

37 

37 

37 

37 

37

Run-off in 

acre-feet

1,220 

1,380

-

1,190 

1,070 

1,350 

2,470 

13,200 

11,440 

811 

922 

' 1,860

36,910

a Fragmentary or no gage-height record; discharge computed on basis of available gage heights, 

weather records, and records for other Salmon River stations, 

b Stage-discharge relation affected by ice.

461677 O - 42 - 14
204 SALMON RIVER BASIN

Salmon River below Valley Creek, at Stanley, Idaho

Location.- VJater-stage recorder, lat. 44°14', long. 114°55', in SEiSEi sec. 34, T. 11 

N., R. 13 E., three-quarters of a mile downstream from Valley Creek and li miles 

northeast of Stanley. Datum of gage is 6,190.32 feet above mean sea level, datum of 

1929.

Drainage area.- 535 square miles.

Records available.- July 1925 to September 1941.

Average discharge.- 16 years, 560 second-feet.

Extremes.- Maxlnum discharge during year, 2,320 second-feet May 27 (gage height, 2.89 

feet); minimum daily, ISO second-feet Dec. 14.

1925-41: Maximum discharge, 5,020 second-feet June 27, 1927 (gage height, 4.41 

feet), from rating curve extended above 4,000 second-feet; minimum, 100 second-feet 

(estimated) Nov. 20-30, 1929.

Remarks.- Records good. Diversions above station for irrigation.

Discharge, in seoond-feet, water year October 1940 to September 1941

Day

1 

2 

Z 

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

15

18 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

396 

598 

606 

494 

458

443 

429 

416 

403 

390

383 

383 

383 

377 

370

358 

358 

353 

347 

347

347 

353 

358 

358 

423

410 

436 

403 

390 

390 

390

Nov.

396 

443 

429 

390 

358

396 

416 

429

410 

383

370 

341 

a325 

a340 

353

353 

358 

364 

347 

347

353 

329 

312 

329

341

329 

335

347 

390 

377

Dec.

364 

353 

353 

353 

335

335 

318 

312 

312 

272

b250 

b230 

b200 

alSO 

a210

a250 

a260 

a270 

h277 

a290

a300 

a300 

a300 

a300 

a310

a310 

h312 

a280 

a280 

a290 

a300

Jan.

a280 

a270 

a270 

h282

> a330 

h297 

> a290

> a340

h335 

\ a340

a300 

aSOO 

h292 

a290 

h292

a290 

a270 

a290 

aSOO 

h292 

a290

Month

Oot 

Nor 

Dec

C

Jan 

Peh 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

W

ember. ....................

nary

ater year 1940-^

Feb.

> a300 

h307 

> a310 

^ h307

> a300

h302 

aSOO 

a300 

aSOO 

a290

a2VO 

a290 

h307

Secondfoot-days

12,550 

10,990 

9,006

212,326

9,460 

8,423 

9,358 

15,061 

40,309 

42,135 

15,804 

13,289 

11,448

197,833

Mar.

S a310

a290

a290 

h292 

a290 

h282 

a280

^ h272 

^ a280

a300 

a310 

a320 

a310 

a30£

h292 

> a300

-* h318 

324 

358

370

Maximum

606 

443 

364

2,320

340 

310 

370 

769 

2,240 

1,780 

817 

632 

410

2,240

Apr.

396 

451 

429 

396 

410

390 

396 

429 

451 

487

458 

502 

533 

541 

557

494 

451 

429 

410 

443

472 

494 

541 

557 

565

598 

632 

676 

704 

769

May

818 

828 

887 

949 

1,060

969

877 

969 

S77 

S47

908 

1,100 

1,420 

1,510 

1,430

1,320 

1,290 

1,300 

1,290 

1,210

1,200 

1,250 

1,440 

1,680 

1,770

2,020 

2,240 

1,950 

1,700 

1,600 

1,600

Minimum

347 

312 

180

180

270 

270 

272 

390 

818 

857 

370 

324 

358

180

June

1,520 

1,350 

1,400 

1,420 

1,350

1,340 

1,470 

1,740 

1,540 

1,420

1,370 

1,420 

1,520 

1,660 

1,700

1,680 

1,600 

1,610 

1,780 

1,650

1,460 

1,360 

1,310 

1,280 

1,210

1,110 

1,050 

1,020 

938 

857

Mean

405 

366 

. 291

580

305 

301 

302 

502 

1,300 

1,404 

510 

429 

382

542

July

817 

769 

741 

713 

695

685

667 

624 

589 

565

541 

509 

487 

480 

465

451 

436 

436 

443 

429

410 

396 

390 

377 

370

377 

396 

403 

396 

377 

370

Per 

square 

mile

0.757 

.684 

.544

1.08

.570 

.563 

.564 

.938 

2.43 

2.63 

.953 

.802 

.714

1.01

Aug.

364 

353 

347 

341 

335

329 

324 

335 

396 

429

465 

632 

502 

451 

436

423 

423 

487 

517 

494

472 

4SO 

480 

458 

451

451 

443 

429 

423 

416 

403

Sept.

396 

396 

403 

390 

390

383 

370 

370 

364 

358

358 

390 

377 

370 

3S3

383 

383 

383 

403 

410

396 

390 

390 

390 

383

377 

370 

364 

'364 

364

Run-off

Inches

0.87 

.76 

.63

14.76

.66 

.59 

.65 

1.05 

2.80 

2.92 

1.10 

.92 

.80

13.75

Acre-feet

24,390 

21,800 

17,860

421,100

18,760 

16,710 

18,560 

29,870 

79,950 

83,570 

31,350 

26,360 

22,710

392,400

a No gage-height record; discharge interpolated or conmuted on basis of 

below Yankee Fork, near Clayton.

b Stage-discharge relation affected by ice. 

h Comnuted from staff-gage readings.

ecorda for station
SALMON RIVER BASIN 205

Salmon River below Yankee Fork, near Clayton, Idaho

Location.- Water-stage recorder, lat. 44°16', long. 114°44', In sec. 20, T. 11 N., R. 

15 E., a quarter of a mile downstream from Sunbeam Dam and Yankee Fork and 18 miles 

upstream from Clayton.

Drainage area.- 841 square miles.

Records available.- October 1921 to September 1941.

Average discharge.- 18 years (1922-24, 1925-41), 823 second-feet.

Extremes.- Maximum discharge during year, 3,370 second-feet May 26, 27 (gage height, 6.27 

feet); minimum daily, 230 second-feet Dec. 14; minimum gage height recorded, 1.89 feet 

Feb. 26. i

1921-41: Maximum discharge, 8,000 second-feet (estimated) June 27, 1927; minimum, 

160 second-feet (estimated) Nov. 25-30, 1929.

Remarks.- Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. No diversions above station for irrigation except those above Stanley.

Rating table, water year 1940-41, except periods of Ice effect (gage height. In feet, 

and discharge. In second-feet)

1.8 

2.1 

2.4 

2.7 

3.0

237

354

492

642

803

3.4

3.8 

4.6 

5.4 

6.2

1,040

1,300

1,880

2,530

3,270

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

546 

779 

S32 

710 

642

601 

586 

571 

556 

541

541 

541 

516 

521 

512

507 

497 

492 

4S7 

482

482 

4S7 

492 

482 

566

556 

5S1 

551 

536 

526 

526

Nov.

531 

576 

571 

526 

468

541 

546 

566 

551 

502

487 

412 

403 

449 

473

468 

482 

502 

454 

426

482 

430 

398 

426 

458

426 

426 

458 

512 

487

Dec.

45S 

468 

468 

458 

439

454 

430 

426 

435 

358

b330 

b310 

b270 

b230 

b280

b320 

b350 

b370 

380 

394

39S 

398 

403 

407

407

407 

421 

3SO 

376 

398 

407

Jan.

35S 

b340 

b340 

b370 

412

a430 

a450 

a410 

h389 

a380

a370 

a370 

a3SO 

a410 

a480

a430 

a400 

a420 

a420 

a390

h380 

a370 

a370 

a370 

a390

3S5 

342 

354 

367 

35S 

358

Month

Oot 

Nov 

Dec

C

Jan 

Feb 

Mar 

Apr 

Hay 

Jun 

Jul AugSep

Water year 1940-4

Peb.

358 

376 

350 

363 

367

372 

385 

3SO 

380 

380

389 

389 

350 

389 

350

354 

35S 

367 

376 

372

363 

376 

376 

376 

363

325 

367 

389

Secondfoot-days

17,245 

14,437 

12,030

305,995

11,993 

10,340 

12,770 

22,747 

63,650 

59,650 

22,058 

17,444 

14,630

278,994

Mar.

403 

403 

385 

363 

39S

376 

354 

376 

376 

354

358 

350 

3S9 

338 

367

389 

394 

430 

421 

421

39S 

412 

416 

403 

403

435 

468 

497 

531 

576 

586

Ma^

832 

576 

46S

3,770

480 

3S9 

586 

1,270 

3,270 

2,620 

1,140 

890 

521

3,270

Apr.

611 

705 

689 

632

627

591 

596 

627 

67S 

726

694 

716 

776 

776 

832

754 

684 

632

611 

637

663 

694 

764 

832 

860

920 

980 

1,070 

1,100 

1,270

May

1,340 

1,340 

1,400 

1,510 

1,580

1,480 

1,340 

1,400 

1,340 

1,340

1,519 

1,960 

2,440 

2,440 

2,280

2, ISO 

2,080 

2,200 

2,040 

1,920

1,960 

2,120 

2,440 

2,710 

2,710

3,070 

3,270 

2,980 

2,530 

2,440 

2,360

MlTHTmnn

4S2 

398 

230

230

340 

325 

338 

591 

1,340 

1,200 

516 

439 

454

230

June

2,280 

2,OSO 

2,120 

2,160 

2,080

2,040 

2,200 

2,620 

2,360 

2,160

2,120 

2,120 

2,200 

2,360 

2,360

2,280 

2,160 

2,160 

2,360 

2,160

1,920 

1,800 

1,680 

1,650 

1,540

1,440 

1,370 

1,370 

1,300 

1,200

Mean

556 

4S1 

38S

S36

387 

369 

412 

758 

2,053 

1,9SS 

712 

563 

48S

764

July

1,140 

1,070 

1,010 

980 

950

920 

890 

860 

832

776

754 

726 

694 

6S9

663

. 642 

627 

616 

627 

606

5S1 

556 

536 

516

516

536 

551 

571 

576 

531 

516

Per 

square 

mile

0.661 

.572 

.461

.994

.460 

.439 

.490 

.901 

2.44 

2.36 

.847 

.669 

.580

.908

Aug.

502 

4S7 

473 

463 

454

444 

439 

444 

512 

606

596 

890 

668 

596

571

556 

546 

616 

668 

647

616 

606 

611 

5S6 

576

571 

566 

551 

531 

536 

516

Sept.

502 

512 

521 

507 

497

492 

478 

478 

46S 

46S

463 

507 

497 

482 

497

502 

492 

482 

507 

521

502 

492 

487 

4S7 

47S

473 

468 

458 

458 

454

Run-off

Inches

0.76 

.64 

.53

13.54

.53 

.46 

.56 

1.01 

2. SI 

2.63 

.98 

.77 

.65

12.33

Acre-feet

34,200 

28,640 

23,860

607,000

23,790 

20,510 

25,330 

45,120 

126,200 

118,300 

43,750 

34,600 

29,020

553,300

a No gage-height record; discharge computed on basis of records for station near Challls. 

b Stage-discharge relation affected by Ice. 

h Computed f^om staff-gage readings.
206 SALMON RIVER BASIN

Salmon River near Challls, Idaho

Location.- Water-stage recorder, lat. 44°23', long. 114°15', In sec. 7, T. 12 N., R. 19 

E., 250 feet downstream from Bayhorse Creek and 9 miles south of Challls. Datum of 

gage is 5,163.99 feet above mean sea level, datum of 1929.

Drainage area.- 1,740 square miles.

Records available.- October 1928 to September 1941.

Average discharge.- 13 years, 1,176 second-feet.

Extrenes.- Maximum discharge during year, 5,350 second-feet May 27 (gage height, 6.05 

reet); minimum, 160 second-feet Dec. 14 (gage height, 0.95 foot).

1928-41: Maximum discharge, 9,790 second-feet June 2, 1936 (gage height, 7.83 

feet); minimum, that of Dec. 14, 1940.

Remarks.- Records good. Some diversion above station for Irrigation.

Rating table, water year 1940-41 (gage height, In feet, and discharge,

In second-feet) 

(ShiftIng-control method used July 23 to Sept. 30)

1.3

1.6 

1.9 

2.2 

2.6

267

378

507

657

S78

3.0

3.4

3.5 

4.2

1,135 

1,450 

1,320 

2,260 

2,7SO

5.0 3,380

5.4 4,060

5.8 4,820

6.2 5,690

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7

e

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

- 87S 

1,000 

1,280 

1,100 

1,030

969 

908 

908 

878 

849

849 

820 

820 

809 

798

786 

775 

764 

753 

748

742 

748 

753 

748 

798

S49 

849 

849 

809 

798 

786

Nov.

792 

820 

849 

809 

705

764 

786 

814 

814 

753

721 

641 

541 

626 

694

706 

721 

759 

699 

621

715 

647 

555 

595 

710

641 

631 

699 

737 

737

Dec.

673 

705 

689 

678 

652

668 

636 

621 

647 

517

466 

458 

362 

270 

343

390 

462 

610 

732 

694

684 

678 

668 

662 

647

631 

657 

585 

440 

512 

621

Jan.

466 

415 

407 

489 

626

662 

689 

641 

626 

615

610 

610 

615 

662 

742

678 

657 

678 

684 

667

652 

626 

616 

690 

610

605 

531 

453 

484 

489 

494

Honth^

Dot 

NOT 

Dec

C

Jar 

Pet 

Max 

Apr 

Hay 

JUH 

Jul 

Aug 

Sep

V,

ember .....................

t ember. ...................

ater year 1940-'

Feb.

498 

590 

590 

636 

498

521 

636 

652 

610 

610

615 

626 

570 

560 

546

512 

517 

560 

636 

610

575 

600 

626 

626 

606

545 

521 

610

Seoondfoot-days

26,461 

21,301 

18,058

448,869

18,376 

16,200 

18,521 

28,886 

139,730 

93,660 

38,475 

28,354 

23,029

421,043

Mar.

636 

668 

641 

695 

605

615 

590 

565 

570 

541

 526 

512 

536 

507 

502

550 

570 

600 

600 

600

575 

570 

575 

565 

570

590 

636 

678

705 

753 

775

Maximum

1,280 

849 

732

6,460

742 

652 

775 

1,580 

5,140 

3,970 

1,870 

1,450 

820

5,140

Apr.

803 

908 

938 

849 

849

803 

792 

809 

849 

908

908 

878 

969 

938

1,030

1,000 

908 

849 

814 

849

849 

878 

938 

1,000 

1,030

1,100 

1,170 

1,280 

1,410 

1,580

May

1,680 

1,680 

1,770 

1,870 

1,980

1,920 

1,720 

1,770 

1,720 

1,680

1,870 

2,510 

3,460 

3,460 

3,140

2,920 

2,850 

3,140 

2,920

2,710

2,710 

3,070 

3,620 

4,150 

4,150

4,720 

5,140 

4,520 

3,880 

3,540 

3,460

Mlnlimnn

742 

641 

270

270

407 

498 

502 

792 

1,680 

1,980 

908 

732 

726

270

June

3,380 

3,070 

3,070 

3,220 

3,070

3.OOO 

3,140 

3,970 

3,620 

3,380

3,300 

3,380 

3,540 

3,880 

3,970

3,800 

3,540 

3,380 

3,620 

3,380

3,070 

a2,900 

a2,800 

a2,700 

a2,500

a2,400 

h2,260 

2,200 

2,140 

1,980

Mean

853 

710 

583

1,226

593 

579 

597 

963 

2,895 

3,122 

1,241 

915 

768

1,154

July

1,870 

1,820 

1,820 

1,770 

1,720

1,680 

1,580 

1,500 

1,410 

1,360

1,280 

1,260 

1,210 

1,170 

1,170

1,100 

1,100 

1,060 

1,100 

1,030

1,000 

969 

938 

908 

938

969 

938 

969 

1,000 

938 

908

Per 

square 

mile

0.490 

.408 

.335

.705

.341 

.333 

.343 

.553 

1.66 

1.79 

.713 

.526 

.441

.663

Aug.

878 

849 

809 

781 

759

748 

737 

732 

798 

938

908 

1,450 

1,250 

1,060 

969

938 

878 

969 

1,000 

1,030

1,000 

969 

969 

938 

908

908 

878 

849 

820 

820 

814

Sept.

798 

786 

820 

803 

786

775 

764 

764 

748 

737

726 

775 

781 

759 

753

770 

753 

748 

742 

809

798 

775 

775 

781 

775

759

753 

742 

742 

732

Hun-off

Inches

0.56 

.46 

.39

9.60

.39 

.35 

.40 

.62 

1.91 

2.00 

.82 

.61 

.49

9.00

Aore-feet

52,460 

42,250 

35,520

890,400

36,450 

32,130 

36,740 

57,290 

178,000 

185,800 

76,310 

56,240 

45,680

835,200

a No gage-height record; 

h Computed from staff-ga

discharge computed on basis of records for 

e reading.

station at Salmon.
SALMON RIVER BASIN 207

Salmon River at Salmon, Idaho

Location.- Water-stage recorder, lat. 45°11', long. 113 054', In sec. 6, T. 21 N., R. 22 

&., just upstream from Lemhi River near Rose ranch buildings, 1,000 feet downstream 

from island and three-eighths of a mile downstream from highway bridge at Salmon.

Drainage area.- 3,600 square miles.

Records available.- April 1912 to September 1916, July 1919 to September 1941.

Average discharge.- 24 years (1913-16, 1920-41), 1,717 second-feet.

Extremes.- Maximum discharge during year, 5,740 second-feet May 27 (gage height, 5.27 feet); 

minimum, 488 second-feet Dec. 15, 16 (gage height, 2.15 feet).

1912-16, 1919-41: Maximum discharge observed, 16,400 second-feet June 12, 1921 

(gage height, 9.35 feet, staff gage at site 700 feet upstream); minimum, 242 secondfeet Jan. 8, 1937 (gage height, 1.50 feet).

Remarks.- Records good. Diversions above station for Irrigation.

Rating table, water year 1940-41 (gage height, In feet, and discharge, in second-feet)

2.2 525 3.1 1,460 4.3 3,500 

2.5 730 3.5 2,050 4.7 4,330 

2.8 1,090 3.9 2,730 5.3 5,830

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

al,500 

al,600 

al,850 

al,700 

hi, 560

al,500 

al, 450 

1,450 

1,430 

1,410

1,370 

1,360 

1,330 

1,320 

1,300

al,2SO 

al,260 

al,240 

hi, 220 

hi, 230

hi, 230 

hi, 220 

hi, 220 

hi, 220 

hl,230

1,360 

1,340 

1,360 

1,320 

1,290 

1,270

Nov.

1,260 

1,260 

1,290 

1,300 

1,240

1^240 

1,240 

1,280 

1,270

1,180 

1,160 

1,080 

1,000 

1,090

1,170 

1,160 

1,180 

1,190 

1,140

1,090 

1,170 

1,060 

991 

1,080

1,170 

1,100 

1,100 

1,180 

1,180

Dec.

1,150 

1,100 

1,140 

1,110 

1,100

1,090 

1,080 

1,040 

1,050 

1,060

928 

818 

753 

573 

525

549 

664 

837 

1,070 

1,190

1,150 

1,090 

1,060 

1,040 

1,040

1,010 

1,040 

1,020 

938 

790 

846

Jan.

906 

690 

639 

690 

780

92S 

1,060 

1,040 

948 

970

917 

SS6 

366 

923 

1,050

1,120 

1,090 

1,080 

1,090 

1,100

1,080 

1,080 

991 

970 

938

970 

948 

917 

828 

328 

837

Feb.

823 

346 

917 

917 

875

846 

375 

1,000 

980 

928

938 

959 

959 

896 

896

896 

856 

846 

896 

948

938 

928 

948 

1,000 

980

938 

836 

906

Month

Dot 

No\ 

Dec

C

Jan 

Pel 

Mai 

Apr 

Maj 

Jur ju:

Aug 

Sej

VI

alendar year 19/to......................

rater year 1940-4

Mar.

1,110 

1,200 

1,120 

1,050 

991

1,010 

1,000 

930 

991 

959

938 

906 

906 

896 

886

896 

980 

1,040 

1,010 

1,010

991 

959 

959 

959 

933

948 

991 

1,050 

1,O80 

1,120 

1,170

Apr.

1 

1 

1 

1 

1

1 

1

1

I1

1

\

1

I

I 

1

1 

1 

1 

1

1

1 

1 

1 

1

1

Secondfoot-days

42,420 

35,021 

29,851

569, 693

29,165 

25,626 

31,044 

36,400 

95,760 

103,420 

49, 330 

39,679 

34,610

557,326

170 

200 

300 

230 

23O

200 

160 

140 

140 

180

240 

220 

220 

270 

220

300 

270 

180 

140 

080

070 

070 

060 

110 

190

ISO 

260 

330 

450 

540

May

1,700 

1,800 

1,800 

1,910 

2,030

2,130 

2,020 

1,880 

1,880 

1,770

1,780 

2,130 

3,100 

3,820 

 3,710

3,300 

3,100 

3,200 

3,400 

3,100

2,910 

3,000 

3,400 

4,040 

4,380

4,610 

5,480 

5,350 

4,730 

4,26O 

4,040

Maximum

1,850 

1,300 

1,150

5,720

1,120 

1,000 

1,200 

1,540 

5,480 

4,610 

2,3OO 

1,920 

1,260

. 5, 48O

June

4,040 

3,710 

3,600 

3,820 

3,710

3,600 

3,600 

4,260 

4,610 

4,260

3,930 

3,820 

3,320 

4,150 

4,380

4,260 

4,040 

3,820 

3,930 

3,930

3,600 

3,300 

3,200 

3,100 

2,910

2,820 

2,550 

2,550 

2,640 

2,460

July

2,300 

2,210 

2,210 

2,130 

2,130

2,020 

2,020 

1,940 

' 1,840 

1,760

1,680 

1,660 

1,600 

1,540 

1,540

1,460 

1,420 

1,400 

1,400 

1,420

1,330 

1,300 

1,240 

1,190 

1,170

1,170 

1,170 

1,170 

1,330 

1,300 

1,230

Aug.

1,190 

1,170 

1,110 

1,020 

980

948 

928 

896 

896 

991

1,110 

1,320 

1,920 

1,610 

1,430

1,340 

1,280 

1,270 

1,420 

1,520

1,500 

1,470 

1,460 

1,490 

1,420

1,410 

1,380 

1,340 

1,290 

1,290 

1,280

Minimum Mean

1,220 1,368 

991 1,167 

525 963

525 1, 557

639 941 

828 915 

886 1,001 

1,060 1,213 

1,700 3,039 

2,460 3,614 

1,17O 1,591 

396 1,230 

1,110 1,154

525 1, 527

Sept.

1,260 

1,190 

1,170 

1,190 

1,160

1,140 

1,S20 

1,110 

1,120 

1,110

1,110 

1,110 

1,140 

1,140 

1,150

1,150 

1,150 

1,140 

1,120 

1,120

1,180 

1,170 

1,170 

1,180 

1,190

1,170 

1,170 

1,160 

1,160 

1,160

Run-off in 

acre-feet

84,140 

69, 460 

59,210

1,130,000

57,850 

50,830 

61, 570 

72,200 

189, 900 

215,000 

97,840 

78, 700 

68, 650

1,105,000

a No gage-height record; discharge computed on basis of records for station near Challis and for 

Pahsimeroi River near Hay.

h Computed from staff-gage readings.
208 SALMON RIVER BASIN

Salmon River at Whitebird, Idaho

Location.- Water-stage recorder, lat. 45°45', long. 116°20', in sec. 22, T. 28 N.,

R. IE., Just upstream from Whitebird Creek, half a mile downstream from CanfieldJoseph Highway bridge, and 1 mile southwest of Whitebird. 

Drainage area.- 13,400 square miles.

Records available.- August 1910 to September 1917, October 1919 to September 1941. 

Average discharge.- 29 years (1910-17, 1919-41), 10,150 second-fe'et. 

nactrernes.- Maximum discharge during year, 39,500 second-feet my 14 (gage height, 22.76

reet); minimum recorded, 1,860 second-feet Dec. 15 (gage height, 10.63 feet). 

1910-17, 1919-41: Maximum discharge observed, 88,800 second-feet June 9, 1921

(gage height, 31.2 feet), from rating curve extended above 75,000 second-feet; minimum

discharge, 1,580 second-feet Dec. 11, 1932 (gage height, 10.23 feet), from rating

curve extended below 2,200 second-feet.

Maximum stage known, about 37.5 feet, present datum, June 1894 (discharge, 120,000

second-feet). 

Remarks.- Records excellent. Amount of water diverted above station for irrigation is a

negligible percentage of total flow.

Rating table, water year 1940-41 (gage height, In feet, and discharge, in second-feet)

10.6 1,S30 12.6 4,340 15.0 9,290 20.0 26,000 

11.0 2,150 13.0 5,060 16.0 11,900 21-0 30,500 

11.4 2,560 13.6 6,020 17.0 14,800 22.0 35,400 

11. S 3,070 14.0 7,040 18.0 18,100 23.0 40,600 

12.2 3,670 14.5 8,120 19.0 21,900

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

7,040 

6,830 

7,250 

8,810 

3,580

7,900 

7,040 

6,620 

6,420 

6,020

5,820 

5,630 

5,440 

5,440 

5,250

5,250 

6,060 

4,970 

4,880 

4,790

4,700 

4,700 

4,700 

4,700 

5,060

6,020 

6,020 

5,320 

5,630 

5,440 

6,440

Nov.

5,440 

5,630 

6,020 

6,020 

5,630

5,440 

5,440 

5,630 

5,820 

5,630

5,440 

5,060 

4,610 

4,170 

4,170

4,430 

4,700 

6,060 

5,440 

5,060

4,700 

4,610 

4,610 

4,170 

4,000

4,340 

4,610 

4,620 

4,610 

5,060

Dec.

5,440 

4,970 

4,880 

4,830 

4,880

4,790 

4.790 

4; 610 

4,610 

4,520

4,260 

3,510 

2,740 

2,160 

a2,000

a2,500 

a3,000 

a4,000 

a6,000 

a5,500

a5,200 

4,970 

4,830 

4,790 

4,790

4,610 

4,610 

4,790 

4,620 

4,170 

3,920

Jan.

3,590 

3,440 

2,860 

2,660 

2,620

3,070 

3,920 

4,000 

4,000 

3,750

3,440 

3,210 

3,140 

3,280 

3,510

3,830 

4,000 

4,000 

4,080 

4,170

4,170 

4,170 

4,080 

4,080 

4,000

4,080 

4,080 

3,920 

3,590 

3,360 

3,210

Feb.

3,230 

3,360 

3,670 

3,590 

3,510

3,440 

3,510 

3,590 

3,830 

4,000

4,170 

4,170 

4,170 

4,030 

3,920

3,670 

3,610 

3,360 

3,440 

3,670

3,830 

3,920 

3,920 

4,000 

4,080

4,170 

4,000 

3,830

Month

Oct 

Hot

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Jui 

Aug 

Sei

HI

alendar year 1940.. ........ ............

ater year 1940-^

Mar.

4,260 

4,970 

6,020 

6,820 

5,440

4,970 

4,790 

4,790 

4,880 

4,880

4,830 

4,700 

4,610 

4,620 

4,430

4,430 

4,610 

4,970 

5,440 

5,630

5,630 

5,440 

5,250 

5,060 

5,060

5,060 

5,250 

5,630 

6,220 

7,040 

7,680

Apr.

8, 

8 

9, 

9 

9

9, 

B, 

8 

7 

8

8. 

8, 

8, 

8, 

8

s,

8, 

8, 

7, 

7,

7, 

7, 

7, 

8, 

9,

9, 

10, 

12, 

13, 

15,

Secondroot-days

183,270 

150,070 

134,280

3,407,280

113,210 

105,690 

162,360 

272,300 

826,900 

721,800 

264,300 

163,180 

161,270

3,248,630

120 

810 

780 

780 

530

290 

530 

120 

900 

350

580 

810 

580 

360 

680

580 

350 

120 

680 

460

460 

460 

680 

120 

050

780 

800 

200 

300 

100

May

17,800 

20,000 

20,700 

21,900 

21,900

20, 400 

13,900 

17,800 

17,400 

16,700

18,100 

22,300 

31, 400 

38,400 

34,900

31,400 

29,600 

29,100 

27,300 

25, 100

24,300 

25,100 

27,300 

31, 000 

36,400

36,400 

36,900 

35,900 

32, 400 

30,500 

29,600

Maximum

8,810 

6,020 

5,440

46,500

4,170 

4,170 

7,680 

15,100 

38,400 

31,400 

14,500 

6,020 

5,440

38,400

June

30,000 

28,600 

27,300 

27,300 

26,900

26,000 

26,400 

30,000 

31,400 

29, 600

27,300 

26,400 

26,600 

26,900 

26,400

24,700 

23,100 

23,100 

26,400 

29,100

24,700 

21, 500 

19,600 

18,100 

17,100

16, 100 

15,400 

15,400 

16, 700 

15, 700

July

14,500 

13,900 

13,300 

12,700 

12,200

11,300 

10,800 

10,300 

9,780 

9,290

3,810 

8,680 

8,350 

8,120 

7,900

7,460 

7,460 

7,040 

7,040 

7,040

6,830 

6,620 

6,220 

6,020 

6,020

6,020 

6,020 

6,020 

6,220 

6,220 

6,220

Aug.

5,820 

6,630 

5,440 

5,250 

5,060

4,970 

4,700 

4,520 

4,430 

4,610

4,970 

5,060 

5,630 

6,020 

5,820

5,440 

5,060 

4,970 

4,880 

5,060

5,250 

5,440 

5,440 

5,440 

5,630

5,630 

5,630 

6,630 

5,440 

5,060 

6,260

Minimum Mean

4,700 5,912 

4,000 6,002 

2,000 4,332

2,000 9,310

2,560 3,652 

3,880 3,776 

4,860 5,237 

7,460 9,077 

16,700 26,670 

16,400 24,060 

6,020 8,526 

4,430 5,264 

4,790 5,042

2,000 8,900

Sept.

5,060 

4,880 

4,880 

4,970 

5,060

5,060 

4,970 

4,970 

4,880 

4,970

4,970 

4,790 

4,790 

4,970 

6,060

6,250 

5,440 

5,250 

5,260 

6,260

5,440 

5,250 

6,250 

6,060 

5,060

4,970 

4,880 

4,970 

4,880 

4,790

Run-off In 

acre-feet

363,500 

297,700 

266,300

6,753,000

224,500 

209, 600 

322,000 

640,100 

1,640,000 

1,432,000 

624,200 

323,700 

300,000

6,444,000

a Ho gage-height record; discharge computed on basis of records for other stations In the Salmon 

River Basin.
SALMON RIVER BASIN 209

Alturas Lake Creek near Obsidian, Idaho

Location.- Water-stage recorder, lat. 43°56', long. 114°50', In SWi sec. 9, T. 7 N., 

 R. 14 E., 1 mile dovmstream from outlet of Perkins Lake, li- miles downstream from 

outlet of Alturas Lake, and 4 miles south of Obsidian.

Drainage area.- 35.7 square miles.

Records available.- November 1940 to September' 1941.

Extremes.- Maximum discharge during period, 330 second-feet May 27 (gage height, 4.26 

feet); minimum not determined, probably occurred during winter.

Remarks.- Records good except those for periods of ice effect, which are fair. No 

diversion or artificial regulation above station.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

6

6 

7 

8 

9 

10

11 

12 

15 

14 

16

16 

17 

18 

19 

20

21 

22 

25 

24 

26

26 

27 

28 

29 

30 

51

Oct. Nov.

*24 

24 

24 

23

23 

b22 

b22 

22 

21

21 

20 

20 

b21 

b21

21 

b21 

b21 

21 

20

b20 

b20 

20 

22 

23

Dec.

23 > 

K 

22 

22 

*21

20 

b20 

b20 

b20

t 

> b!8

v 

,

Month

Oot 

NOT 

Dec

C

Jan 

Peb 

Mar 

Apr 

May 

Jun 

Jul AugSep

T

ember 7-

alendar year

tie perio

Jan.

b!8

' b!7

. b!6 

*b!6

> b!6

I

Peb.

. b!5

i

Secondfoot-days

517 

686

.

524 

420 

429 

989 

5,620 

5,912 

1,671 

789 

537

-

Mar.

b!5 

b!5 

b!5 

b!5 

15

b!5

b!4 

b!4 

b!4 

*b!4

b!4 

bl? 

b!3 

b!3 

b!3

b!2 

b!2 

12 

12 

13

blS 

b!3 

13 

b!3 

b!4

b!4 

14 

b!4 

15 

16 

17

Maximum

24

-

17 

69 

321 

247 

102 

31 

20

-

Apr.

18 

20 

22 

22 

25

25 

25 

25 

25 

29

31 

32 

31 

31 

31

31 

31 

31 

31 

31

31 

32 

33 

35 

39

42 

47 

53 

61 

69

May

79 

89 

96 

103 

112

114 

111 

111 

106 

102

102 

119 

175 

213 

213

204 

193 

191 

191 

183

178 

190 

222 

256 

274

302 

321 

302 

274 

256 

238

» 

20

12 

18 

79 

109 

30 

20 

16

-

June

222 

204 

204 

204 

204

204 

213 

222 

222 

204

204 

213 

230 

247 

247

247 

23S 

230 

230 

213

196 

185 

172 

166 

158

145 

134 

127 

118 

109

Mean

21.5 

18.9

_

16.9 

15.0 

13.8 

33.0 

181 

197 

53.9 

25.5 

17.9

-

July

102

96 

91 

85 

81

77 

73 

70 

67 

63

60 

56 

53 

51 

52

50

48 

46 

43 

41

40 

37 

35 

34 

32

31 

32 

32 

32 

31 

30

Per 

square 

mile

0.608 

 529

_

.473 

.420 

.387 

.924 

5.07 

5.52 

1.51 

.714 

.501

-

Aug.

30 

28 

27 

26 

25

23 

23 

23 

23 

25

26 

31 

30 

28 

28

26 

26 

28 

28 

28

28 

27 

26 

25 

23

23 

22 

22 

22 

21 

20

Sept.

20 

20 

20 

19 

19

19 

18 

18 

18 

17

17 

18 

18 

18 

18

18 

18 

17 

18 

18

18 

17 

18 

18 

18

17 

17 

16 

16 

16

Run-off

Inches Acre-feet

0.54 1,030 

.61 1,160

_

.55 1,040 

.44 855 

.45 861 

1.03 1,960 

5.84 11,150 

6.16 11,730 

1.74 3,310 

.82 1,660 

.56 1,070

35,690

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
210 SALMON RIVER BASIN

Valley Creek at Stanley, Idaho

Location.- Staff gage, lat. 44°13', long. 114°56', In sec. 3, T. 10 N., R. 13 E., a quar-

 ter of a mile upstream from mouth, three-eighths of a mile downstream from upper 

Stanley, and three-quarters of a mile upstream from lower Stanley.

Drainage area.- 176 square miles.

Records available.- December 1910 to October 1913, May 1921 to September 1941.

Average discharge.- 21 years (1911-13, 1922-41), 175 second-feet.

Extremes.- Maximum discharge observed during year, 700 second-feet May 26, 27; maximum

 gage height observed, 2.72 feet May 27; minimum discharge not determined, probably 

occurred during winter.

1910-13, 1921-41: Maximum discharge observed, 1,850 second-feet May 29, 1921 

(gage height, 4.4 feet), from rating curve extended above 1,300 second-feet; minimum, 

40 second-feet (estimated) Nov. 17-30, 1929, Dec. 8-13, 1932.

Remarks.- Records fair. Gage read once dally Apr. 13 to July 3 (except Apr. 17, 25, 

nay 2-4) and twice to four times weekly during remainder of year. Diversions above 

station for irrigation.

Rating table, water year 1940-41, except periods of Ice effect (gage height, in feet, 

and discharge, in second-feet)

0.9 43 2.1 378 

1.2 94 2.4 525 

1.5 163 2.7 700 

1.8 25S

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

6

6

7 

8 

9 

10

11 

12 

15 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

28 

29

SO

31

Oct.

162 

207 

172 

138 

128

117 

113 

109 

105 

102

98 

96 

94 

92 

91

91 

90 

90 

90 

86

S7 

88 

90 

90 

148

137 

126 

120 

113 

107 

108

Nov.

109- 

120 

110 

9S 

101

104 

112 

120 

109 

9S

 6'85

Dec.

(*) 

> e80

t J

Month

Oot 

NOT 

Dec

C

Jem 

Feb 

Mar 

Apr 

Bay 

Jun 

Jul 

Aug? 

Sep

Water year 1940-4]

Jan.

> 670 

(*)

Feb.

X

> e70

i

Secondfoot-days

3,485 

2,781 

2,480

62,035

r

2,170 

1,960 

2,644 

5,767 

3,350 

2,743 

4,944 

3,729 

2,894

8,947

Mar.

85 

S3 

92 

100 

92

83 

79 

74 

70 

65

60 

55 

60 

65 

80

94 

86 

79 

83 

86

90 

84 

79 

83 

86

90 

92 

94 

112 

129 

134

Maximum

207 

120

710

134 

276 

700 

670 

258 

153 

107

700

Apr.

140 

160 

153 

139 

125

111 

130 

148 

152 

156

160 

184 

207 

258 

240

177 

168 

160 

177 

207

207 

240 

223 

240 

232

223 

240 

258 

276 

276

May

315 

355 

395 

435 

475

335 

356 

356 

276 

276

315 

378 

475 

475 

425

402 

402 

425 

402 

356

356 

378 

450 

525 

552

700 

700 

610 

500 

475 

475

Minimum

86

_

55 

111 

276 

258 

107 

84 

84

-

June

450 

402 

450 

450 

402

402 

425 

610 

450 

425

402 

402 

450 

525 

525

475 

450 

500 

670 

500

425 

402 

378 

378

356

315 

295 

295 

276 

258

Mean

112 

92.7 

80

169

70 

70 

85.3 

192 

431 

425 

159 

120 

96.5

161

July

258 

240 

240 

232 

224

215 

207 

199 

191 

177

163 

155 

146 

138 

143

148 

147 

147 

146 

138

130 

123 

115 

111 

109

116 

124 

122 

120 

113 

107

Per 

square 

mile "

0.636 

.527 

.455

.960

.398 

.398 

.485 

1.09 

2.45 

2.41 

.903 

.662 

.548

.915

Aug,

100 

98 

91 

84 

92

100 

104 

107 

114 

122

129 

160

143 

141 

140

138 

140 

143 

148 

153

146 

138 

131 

121 

111

109 

108 

106 

104 

104 

104

Sept.

103 

102 

102 

102 

96

92 

94 

92 

90 

96

101 

107 

105 

104 

102

98 

96 

100 

104 

103

102 

97 

92 

90 

90

88 

88 

88 

86 

84

Run-off

Inches

0.73 

.59 

.52

13.12

.46 

.41 

.56 

1.22 

2.82 

2.69 

1.04 

.79 

.61

12.44

Acre-feet

6,910 

5,520 

4,920

123,000

4,300 

' 3,890 

5,240 

11,440 

26,480 

25,280 

9,810 

7,400 

5,740

116,900

* Winter discharge measurement made this day.

e Fragmentary gage-height record, stage-discharge relation affected by ice, or gage reading not 

representative of average for day; discharge computed on basis of available gage heights, two discharge 

measurements, weather records, and records for Salmon River below Valley Creek, at Stanley.
SALMON RIVER BASIN 211

Yankee Fork of Salmon River near Clayton, Idaho

Location.- Water-stage recorder, lat. 44°17', long. 114°44', in sec. 17, T. 11 N., R. 15 

K., naif a mile-upstream from mouth and 17 miles west of Clayton.

Drainage area.- 195 square miles.

Records available.- May 1921 to September 1941.

Average discharge.- 18 years (1922-24, 1925-41), 176 second-feet.

Extremes.- Maximum discharge during year, 965 second-feet May 26 (gage height, 4.37); 

minimum not determined (occurred during period of ice effect).

1921-41: Maximum discharge, 3,360 second-feet June 12, 1921 (gage height, 6.79 

feet, site and datum then in use), from rating curve extended above" 2,300 second-feet; 

minimum, 10 second-feet (estimated) Dec. 5, 6, 1927.

Remarks.- Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. No diversion or regulation above station.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4

6

6

7 

8 

9 

10

11 

IS 

13 

14 

16

16 

17 

18 

19 

SO

SI 

SS 

S3 

24 

25

26 

27 

28 

29 

30 

31

Oct.

81 

116 

136 

116 

107

100 

95 

90 

87 

83

80 

77 

76 

74 

73

73 

71 

70 

70 

69

69 

71 

72 

70 

77

76 

75 

73 

71 

71 

70

Nov.

70 

72 

73 

66 

54

76 

69 

71 

70 

56

68 

56

' a60

Dec.

 a50 

'

Jan.

* 

 a50

/

Month

Oct 

Nov 

Dec

C

Jan 

Pet 

Mar 

Apr 

Jlaj 

Jun 

Jul 

Aug 

Sep

w

list.......................

tember ....................

ater year 1940-41

Feb.

> a45

s

Seeondfoot-days

2,539 

1,883 

1,550

66,660

1,560 

1,260 

2,021 

4,615 

18,594 

13,969 

4,658 

3,324 

2,486

58, 469

Mar.

a50

h61 

a50

a46

h42 

a45 

a45 

a45 

a50

a60 

a70 

a80 

a80 

h81

a75 

a70 

a70 

a70 

a70

a80 

h92 

a95 

a95 

alOO 

allO

Maximum

136 

76

1,430

110 

366 

905 

660 

226 

191 

90

905

Apr.

alEO 

a!40 

133 

122 

116

101 

100 

105 

120 

124

119 

115 

128 

131 

155

143 

136 

124 

108 

109

104 

109 

130

161 

179

216 

249 

293 

349 

366

May

384 

378 

387 

414 

411

372 

346 

344 

332 

361

445 

618 

860 

800 

682

639 

598 

'682 

618 

579

598 

705 

825 

905 

860

905 

873 

750 

660 

639 

639

Minimum

69

-

100 

332 

228 

111 

87 

76

-

June

598 

560 

598 

598 

579

560 

579 

660 

618 

598

598 

579 

679 

593 

542

504 

461 

445 

445 

405

372 

352 

330

311 

276

273 

254 

247 

242 

228

Mean

81.9 

62.8 

50.0

182

50.0 

45.0 

65.2 

154 

600 

466 

150 

107 

82.9

160

July

226 

213 

211 

199 

191

135 

179 

174 

164 

161

159 

167 

152 

159 

150

133

131 

133 

140

141

126 

119 

115 

112

111

111 

119 

120 

131 

115 

111

Per 

square 

mile

0.420 

.322 

.256

.933

.266 

.231 

.334 

.790 

3.08 

2.39 

.769 

.549 

.426

.821

Aug.

104 

101 

98 

94 

90

88 

87 

87 

98 

136

115 

191 

128 

113 

107

102 

98 

111 

120 

128

115 

111 

111 

108 

101

101 

100 

98 

94 

96 

94

Sept.

39 

90 

38 

89 

84

83 

81 

83 

81 

81

78 

84 

83 

80 

83

87 

82 

80 

84 

89

84 

84 

83 

83 

82

80 

80 

78 

77 

76

Run-off

Inches

0.48 

.36 

.30

12.73

.30 

.24 

.39 

.88 

3.66 

2.67 

.89 

.63 

.47

11.16

Acre-feet

5,040 

3,730 

3,070

132,200

3,070 

2,500 

4,010 

9,150 

36,880 

27,750 

9,240 

6,690 

4,930

116,000

* Winter discharge measurement made on this day.

a Ho gage-height record or stage-discharge relation affected by ice; discharge computed on basis 

of two discharge measurements, weather records, and records for other Salmon River stations, 

h Computed from staff-gage readings. %
212 SALMON RIVER BASIN

Pahsimeroi River near May, Idaho

Location.- Staff gage, lat. 44°42', long. 114°03', in Wi sec. 25, T. 16 N., R. 20 E., 

a quarter of a mile downstream from old highway bridge on Challis-Salmon River 

highway, a quarter of a mile upstream from Salmon River, and 10 miles northwest of 

May.

Records available.- October 1929 to September 1941. 

Average discharge.- 11 years (1930-41), 177 second-feet.

Extremes.- Maximum discharge observed during year, 258 second-feet Nov. 4, 6, 7; maximum 

gage neight observed, 2.67 feet Oct. 1, 2: minimum discharge observed, 86 second-feet 

May 12, 13.

1930-41: Maximum discharge observed, 279 second-feet Dec. 10-14, 16, 17, 1929; 

minimum observed, 75 second-feet Apr. 28, 1934.

Remarks.- Records fair. Gage read once daily. Many diversions above station for 

irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

251 

253 

256 

248 

246

a247 

248 

246 

246 

244

248 

251 

251 

248 

248

248 

251 

248 

253 

253

251 

253 

a253 

a253 

a254

&254 

a255 

EL255 

a256 

a256 

256

Nov.

256 

253 

253 

258 

256

258 

258 

a256 

a253 

251

251 

246 

246 

244 

246

244 

246 

246 

24S 

248

244 

239 

244 

237 

237

234 

234 

234 

237 

237

Dec.

239 

241 

239 

241 

246

248 

246 

244 

244 

244

241 

241 

239 

234 

232

228 

223 

223 

228 

230

234 

234 

237 

241 

241

244 

244 

244 

244 

244 

239

Jan.

230 

223 

218 

216 

218

218 

221 

223 

221 

218

218 

216 

216 

218 

216

216 

221 

223 

223 

223

221 

a221 

a222 

a223 

a224

a225 

225 

225 

225 

225 

223

Feb.

221 

221 

221 

221 

221

221 

218 

218 

221 

223

232 

234 

234 

232 

230

232 

232 

234 

232 

237

237 

237 

239 

239 

237

237 

239

239

Month

Oc1 

NOT

Dec

C

Jar 

Fet 

Mai

Api 

Maj 

Jui 

Ju] 

Auj 

Sei

VI

alendar year 1940 ......................

fater year 1940- 41.

Mar.

239 

241 

241 

241 

246

246 

244 

244 

244 

241

237 

230 

232 

232 

232

234 

234 

232 

234 

239

237 

239 

241 

241 

239

237 

234 

234 

237 

239 

237

Apr.

234 

234 

232 

232 

228

225 

223 

218 

218 

218

214 

214 

214 

212 

216

202 

193 

191 

191 

182

175 

168 

164 

157 

153

144 

142 

140 

124 

119

Secondfoot-days

7,780 

7,394 

7,397

70,164

6,855 

6,439 

7,378 

5,777 

3,497 

5,045 

4,898 

5,506 

6,059

74,025

May

115 

110 

108 

110 

10S

108 

106 

92 

92 

92

87 

86 

86 

89 

95

110 

108 

102 

104 

99

108 

106 

108 

108 

117

128 

182 

157 

164 

157 

155

Maximum

256 

258 

248

277

230 

239 

246 

234 

182 

195 

175 

239 

216

258

June

164 

159 

188 

175 

159

182 

184 

195 

179 

170

164 

149 

144 

168 

166

164 

168 

173 

162 

159

157 

155 

157 

155 

155

157 

170 

195 

188 

184

July

173 

164 

175 

168 

164

168 

170 

166 

164

162

162 

157 

155 

157 

159

153 

147 

147 

149 

147

151 

157 

153 

149 

151

155 

155 

153 

155 

155 

157

Minimum

244 

234 

223

92

216 

218 

230 

119 

86 

144 

147 

151 

175

86

Aug.

157 

157 

155 

153

151

153 

155 

155 

157 

162

239 

232 

223 

191 

188

184 

182 

184 

182 

186

182 

179 

182 

179 

179

179 

179 

182 

173 

173 

173

Mean

251 

246 

239

192

221 

230 

238 

193 

113 

168 

158 

178 

202

203

Sept.

175 

177 

179 

182 

184

186 

188 

191 

195 

198

200 

202 

202 

202 

205

209 

207 

207 

209 

209

216 

216 

216 

214 

214

214 

216 

216 

214 

216

Run-off In 

acre-feet

15,430 

14,670 

14,670

139,200

13,600 

12, 770 

14, 630 

11,460 

6,940 

10,010 

9,720 

10, 920 

12,020

146,800

a No gage-height record; discharge Interpolated.
SALMOft RIVER BASIN 213

Lemhi River at Salmon, Idaho

Location.- Staff gage, lat. 45°10', long. 113°52'30", in SEi sec. 5, T. 21 N., R. 22 E.,

 40 feet upstream from highway bridge, 1,100 feet upstream from diversion gates of power 

canal, 1,320 feet downstream from Kirtly Creek, and 1 mile southeast of Salmon.

Records available.- August 1928 to September 1941. 

Average discharge.- 13 years, 217 second-feet.

Extremes - Maximum discharge observed during year, 1,350 second-feet June 8 (gage height,

 about 3.7 feet), from rating curve extended above 600 second-feet; minimum discharge 

observed, 35 second-feet my 12 (gage height, 1.16 feet).

1928-41: Maximum discharge, 2,400 second-feet June 3, 1936 (gage height, 4.0 feet, 

from floodraarks, site and datum then in use), from rating curve extended above 1,200 

second-feet; minimum observed, 14 second-feet July 22, 23, 1931, Aug. 30 to Sept. 3, 

1937.

Remarks - Records fair. Many diversions above station for irrigation. Idaho Power Co.

 (formerly Salmon River Power & Light Co.) diverts water 1,100 feet downstream for 

power development.

Rating table, water year 1940-41, except period of lee effect (gage height, In feet, and 

discharge, In aecond-feet)

1.1 

1.4 

1.7 

2.0 

2.3

28

70

129

202

290

2.6 

2.9 

3.2 

3,5 

3.7

405

600

S55

1,150

1,350

Discharge, In aecond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

360 

342 

325 

342 

342

342 

325 

a316 

308 

303

308 

303 

308 

308 

290

275 

275 

275 

275 

275

275 

290 

290 

290 

290

290 

290 

290 

290 

290 

275

Nov.

290 

290 

290 

290 

275

290 

290 

290 

290 

290

260 

245 

245 

230 

230

275 

275 

260 

260 

260

275 

260 

245 

230 

245

260 

260 

260 

260 

275

Dec.

260 

260 

260 

260 

260

245 

260 

260 

245 

230

216 

189 

blSO 

b!70 

b!80

b!90 

b200 

b210 

b220 

230

230 

245 

245 

245 

245

245 

230 

230 

245 

245 

216

Jan.

216 

192 

189 

202 

216

230 

230 

216 

202 

194

186 

202 

174 

260 

290

275 

260 

260 

245 

230

230 

216 

216 

216 

216

202 

202 

197 

202 

189 

197

Feb.

181 

202 

230 

245 

230

230 

230 

216 

202

197

197 

202 

216 

216 

202

202 

230 

216 

197 

197

202 

216 

216 

216

216

216 

230 

245

Month

Oct 

Noil 

Dec

C

Jar; 

Fet 

Mar 

Api 

Mas 

Jur 

Jul 

Aug 

Sei

VI

alendar year 19 10. .....................

ater year!940-4

Mar.

360 

405 

360 

290 

260

260 

260 

260 

260 

230

230 

216 

216 

216 

230

245 

245 

» 260 

260 

245

230- 

230 

230 

216 

216

216 

230 

230 

246 

245 

245

Apr.

245 

260 

245 

245 

230

230 

216 

216 

216 

202

213 

202 

202 

192 

189

197 

192 

189 

184 

184

1S6 

176 

164 

147 

147

145 

147 

143 

138 

121

Secondfoot -days

9,367 

7,995 

7,146

78,600

6,752 

5,995 

7,841 

5,766 

6,014 

18,223 

5,715 

3,931 

7,082

93,677

May

110 

100 

75 

68 

53

53 

54 

53 

48 

40

39 

35 

40 

159 

169

162 

192 

216 

202 

194

171 

184 

197 

308 

325

525 

al,250 

950 

630 

722 

640

Maximum

360 

290 

260

586

290 

245 

405 

260 

1,250 

1,350 

290 

216 

325

1,350

June

. 722 

810 

855 

355

855

S55 

855 

al,350 

al.OSO 

765

680 

640 

600 

640 

640

680 

6SO 

600 

562 

492

460 

382 

342 

308 

290

260 

245 

230 

245 

275

July

275 

275 

290 

a275 

260

245 

230 

216 

202 

186

164 

143 

145 

152 

164

169 

157 

147 

' 166 

192

179 

162 

145 

138 

131

127 

127 

171 

159 

169 

154

Minimum

275 

250 

170

18

174 

181 

-216 

121 

35 

230 

127 

65 

150

35

Aug.

152 

150 

121 

102 

88

77 

63 

67 

67 

65

75 

81 

90 

121 

106

102 

96 

92 

112 

108

110 

123 

140 

192 

197

199 

216 

216 

216 

216 

216

Mean

302 

266 

231

215

218 

214 

253 

192 

259 

607 

184 

126 

236

257

Sept.

197 

194 

171 

150 

162

169 

162 

174 

186 

197

199 

197 

199 

199 

216

230 

230 

245 

245 

260

260 

275 

890 

385 

325

325 

385 

325 

325 

325

Run-off In 

acre-feet

18 ,580 

15,860 

14,170

155,900

13,390 

11,890 

15,550 

11,440 

15,900 

36,140 

11,340 

7,900 

14,050

136,200

a No gage-height record; discharge interpolated or computed on basis of estimates of stage made 

by observer,

b Stage-discharge relation affected by Ice.
214 SALMON RIVER BA'SIN

Middle Fork of Salmon River near Cape Horn, Idaho

Location.- Water-stage recorder, lat. 44°25', long. 115°18', in sec. 34, T. 13 N., R. 11 

E., 1,100 feet downstream from Little Beaver Creek, half a mile downstream from 

confluence of Marsh and Beaver Creeks, and 1& miles northwest of Cape Horn.

Drainage area.- 138 square miles.

Records available.- September 1928 to September 1941.

Average discharge'.- 13 years, 197 second-feet.

Extremes.- Maximum discharge during year, 1,290 second-feet May 26 (gage height, 5.22 

reet); minimum not determined, probably occurred during winter.

1928-41: Maximum discharge, 2,340 second-feet June 9, 1933 (gage height, 6.26 

feet), from rating curve extended above 1,900 second-feet; minimum recorded, 35 

second-feet (estimated) Nov. 26-30, 1929, but may have been less during some winters.

Remarks.- Records good except those for period of no gage-height record, which are 

poor. No diversion above station.

Rating table, water year 1940-41 (gage height, In feet, and discharge, in second-feet) 

(Shifting-control method used Oct. 1-19, May 13-19, Aug. 3 to Sept. 30}

2.4 

2.6 

2.8

68

103

145

3.1 

3.4 

3.7

223

319

433

4.0 

4.3 

4.6

565

715

880

4.9 

5.2

1,065

1,290

Discharge, in second-feet, mater year October 1940 to September 1941

Day

1 

2 

S 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

113 

174 

174 

143 

132

121 

117 

115 

111 

107

105 

103 

101 

99 

98

96 

96 

94

94

' alls 

J

Hov.

 alOO

Dec.

' a80

t J

Month

Oct 

HOT 

Dec

C

Jam 

Feb 

Mar 

AprMay 

Jun 

Jul1 

Aug\ 

Sep

W

amber. ...................

ist......................

iter- year 1940-4

Jan.

 a75

Feb.

' a70 

/

Secondfoot-days

3,573 

3,000 

2,480

81,673

2,325 

1,960 

2,367 

5,906 

23,306 

15,682 

5,694 

4,257 

3,312

73,862

Mar.

> a75 

117

Maximum

174

1.42C

ir?

556 

1,21C 

77C 

292 

19E 

132

1,21C

Apr.

119 

130 

130 

125 

127

123 

123

127 

134 

13S

132 

138 

152 

159

174

162 

155 

147 

143 

, 152

159 

169 

195 

223 

250

292 

359 

429 

484 

556

May

589 

589 

663 

638 

613

533 

497 

524 

479 

497

565 

770 

970 

940 8'25

770 

770 

770 

689 

663

689

770 

880 

970 

970

1,210 

1,100 

970 

825 

770 

798

Mini 

_

119 

479 

292 

132 

109 

96

«

June

715 

663 

663 

663

638

613 

689 

770 

638 

5S9

565 

565 

5S9 

663 

565

528 

493 

565 

565 

479

425 

393 

374 

359 

344

326 

323 

319 

309 

292

Mean

115 

100 

80

223

75 

70 

76.4 

197 

752 

523 

184 

137 

110

202

July

292 

269 

256 

244

247

226 

215 

206 

201 

195

192 

187 

185 

185 

177

172 

169 

169 

169 

159

152 

145 

143 

141 

138

145 

150 

150 

145 

138 

132

Per 

square 

mile

0.833 

.725 

.580

1.62

.543 

.507 

.554 

1.43 

5.45 

3.79 

1.33 

.993 

.797

1.46

Aug.

130 

127 

121 

117 

115

111 

109 

125 

150 

125

162 

195 

145 

130 

123

123 

125 

127 

198 

182

157 

155 

152 

143 

138

141 

134 

130 

125 

123 

119

Sept.

117 

123

119 

115 

113

111 

107 

105 

103 

103

107 

123 

123 

115 

132

121 

113 

107 

123 

119

111 

107 

103 

101 

101

99 

99 

98 

98 

96

Run-off

Inches

0.96 

.81 

.67

22.00

.63 

.53 

.64 

1.60 

6.28 

4.23 

1.53 

1.14 

.89

19.91

Aore-feet

7,090 

5,950 

4,920

161,990

4,610 

3,890 

4,690 

11,710 

46,230 

31,100 

11,290 

8,440 

6,570

146,490

a Ho gage-height record} discharge computed on basis of records for other Salmon River stations.
SALMON RIVER BASIN 

Bear Valley Creek near Cape Horn, Idaho

215

Location.- Water-stage recorder In about sec. 31, T. 13 N., R. 10 E., 250 feet downstream 

TfomTir Creek, 5 miles upstream from mouth, and 7 miles northwest of Cape Horn.

Drainage area.- 180 square miles.

Records available.- September 1921 to September 1928 (fragmentary), October 1928 to 

September 1941.

Average discharge.- 13 years (1928-41), 239 second-feet.

Extremes.- Maximum discharge during year, 1,910 second-feet May 27 (gage height, 4.23 

feet); minimum not determined, probably occurred during winter.

1921-41: Maximum discharge, 3,450 second-feet June 9, 1933 (gage height, 5.49 feet), 

from rating curve extended above 2,000 second-feet; minimum recorded, 28 second-feet 

Nov. 11, 1931.

Remarks.- Records good except those for periods of no gage-height record, which are poor. 

No regulation or diversion above station.

Rating table, water year 1940-41 (gage height, In feet, and discharge, in second-feet)

1.3 92 2.5 555 3.7 1,410 

1.6 161 2.8 740 4.0 1,670 

1.9 263 3.1 945 4.3 1,960 

2.2 395 3.4 1,170

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

SB 

29 

30 

31

Oct.

153 

182 

259 

222 

182

161 

151 

145 

143 

138

133 

130 

128 

126 

121

119 

117 

112 

10S 

104

96 

96 

94 

94 

188

185 

143 

130 

121 

110 

114

Nov.

 a!20

>

Deo.

 alOO

> ^

Month

Oot 

Nor

Deo

C

Jam 

Feb 

Mari 

Apr 

May 

Jun 

Jul 

Augi 

Sep

W

alendar year 1940

ater year 1940-41

Jan.

 a90

Feb.

 a85

>

Secondfoot-days

4,305 

3,600 

3,100

98,164

2,790 

2,380 

2,945 

7,971 

2,522 

1,660 

6,600 

5,139 

4,285

7,297

Mar.

 a95

Maximum

259

1,750

720 

1,810 

1,250 

35V 

252 

173

1,810

Apr.

176 

191 

194 

179 

176

161 

158 

164 

179 

188

179 

173 

194 

201 

229

211 

19S 

1S5 

1S2 

18S

208 

222 

263 

322 

376

430 

494 

585 

645 

720

May

760 

720 

826 

910 

S26

734 

675 

727 

760 

772

910 

1,130 

1,410 

1,410 

1,250

1,100 

1,060 

1,060 

S75 

84V

875 

945 

1,020 

1,210 

1,410

1,490 

1,810 

.1,450 

1,170 

1,130 

1,250

June

1,210 

982 

945 

1,020 

910

847 

945 

1,250 

945 

7S6

740 

734 

734 

S26 

714

645 

609 

766 

910 

779

579 

516 

a470 

a 440 

a420

a400 

390 

390 

386 

372

Hinlmum Mean

94 139 

120 

100

268

90 

85 

 95 

158 266 

720 1,049 

372 722 

156 213 

126 166 

126 143

267

July

357 

326 

304 

288 

275

259 

248 

233 

222 

218

211 

211 

208 

205 

201

194 

191 

188 

188 

182

173 

167 

161 

158 

156

158 

191 

198 

198 

173 

158

Per 

square 

mile

0.772 

.667 

.556

1.49

.500 

.472 

.528 

1.48 

5. S3 

4.01 

1.18 

.922 

.794

1.48

Aug.

156 

151 

143 

138 

133

128 

126 

126 

145 

164

153 

244 

194 

161 

151

194 

156 

179 

252 

252

218 

185 

167 

161 

156

158 

156 

148 

148 

151 

145

Sept.

140 

145 

161 

153 

148

145 

138 

135 

135 

133

133 

153 

158 

145 

164

173 

153 

140 

145 

161

148 

140 

135 

133 

133

130 

128 

128 

126 

126

Run-off

Inches Acre-feet

0.89 8,540 

.74 7,140 

.64 6,150

20.29 194,700

.58 5,530 

.49 4,720 

.61 5,840 

1.65 15,810 

6.72 64,510 

4.47 42,960 

1.36 13,090 

1.06 10,190 

.89 8,500

20.10 193,000

a Ho gage-height record; discharge computed on basis of records for other Salmon River stations.
216 SALMON RIVER BASIN

South Fork of Salmon River near Knox, Idaho

Location.- Staff gage, lat. 44°39', long. 115°42', in NWi sec. 11, T. 15 N., R. 6 E., 

 an eighth of a nlle below Curtls Creek, three-quarters of a mile above Warm Lake 

Creek, li miles southwest of Knox, and 21 miles northeast of Cascade.

Drainage area.- 92 square miles.

Records available.- September 1928 to September 1941.

Average discharge.- 13 years, 119 second-feet.

Extremes.- Maximum dally discharge during year, 735 second-feet May 13, 26; minimum 

discharge not determined, probably occurred during period of Ice effect.

1928-41: Maximum discharge observed, 1,560 second-feet June 9, 1933 (gage height, 

4.69 feet), from rating curve extended above 1,000 second-feet; minimum observed, 16 

second-feet Feb. 17, Aug. 19, 20, 1931, but may have been less during a winter period.

Remarks.- Records fair. Gage read about thrice weekly. No diversion above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

e

6 

V 

8 

9 

10

11 

12 

13 

14 

15

16 

IV 

18 

19 

20

21 

22 

23 

24 

25

26 

2V 

28 

29 

30 

31

Oct.

55 

80 

109 

V2 

64

58 

52 

50 

48 

46

44 

43 

42 

41 

41

41 

42 

43

44 

45

46 

46 

4V 

48 

90

d80 "75 

70 

68 

66 

67

Nov.

67 

67 

68 

70 

56

60 

67 

66 

64 

b60

b55 

b45 

b40 

b50

V b60

|»

I b55

Dec.

51 -i 

52 

52 

53 

52

52 

51 

50 

b48

' b35

< b50

J b45 

-*

Month

Dot 

NOT 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Augi 

Sep

W

ember ....................

tember...................

ater year 1940-4

Jan.

. b42

Feb.

 b40

>

Secondfoot-days

1,763 

1,710 

1,411

49,165

1,302 

1,120 

1,963 

4,614 

16,232 

11,328 

3,076 

1,810 

1,479

17,808

Mar.

b42

41 

42 

42 

42 

41

41 

44 

48 

45 

53

59 

62 

64 

64 

64

66 

67 

68 

VO 

V5

SO 

92 

103 

114 

126 

140

Maximum

109 

70

800

140 

318 

735 

625 

165 

73 

58

735

Apr.

154 

170 

160 

150 

140

130 

125 

130 

135 

150

135 

125 

121 

122 

122

122 

123 

117 

109 

121

12V 

133 

139 

156 

172

d!88 

205 

23V 

278 

318

May

359 

338 

380 

400 

370

350 

338 

348 

359 

359

484 

610 

735 

680 

625

575 

525 

500 

475 

460

d4VO 

500 

d560 

625 

VOO

V35 

V1V 

698 

680 

652 

625

Minimum

41 

40

109 

338 

179 

65 

51 

46

-

June

575 

525 

550 

575 

530

500 

685 

585 

485 

485

485 

440 

460 

380 

346

311 

27V 

425 

450 

360

292 

261 

230 

222 

213

205 

205 

199 

193 

179

Mean

56.9 

57.0 

45.5

134

42.0 

40.0 

63.3 

154 

524 

378 

99 . 2

se.4

4P.3

131

July

165 

157 

149 

143 

136

130 

123 

116 

108 

101

100 

98 

97 

96 

94

92 

90 

83 

83 

83

83 

83 

80 

76 

76

75 

75 

80 

72 

67 

65

Per 

square 

mile

0.618 

.620 

.495

1.46

.457 

.435 

.688 

1.67 

5.70 

4.11 

1.08 

.635 

.536

1.42

Aug.

63 

61 

60 

59 

57

55 

53 

53 

53 

61

58 

73 

66 

57 

56

59 

61 

64 

67 

70

63 

56 

56 

56 

56

56 

54 

51 

52 

52 

52

Sept.

53 

52 

51 

51 

51

50 

48 

47 

4V 

46

46 

46 

46 

46 

50

53 

52 

51 

56 

58

52 

48 

4V 

46 

46

46 

4V 

48 

49 

50

Run-off

Inches

0.71 

.69 

.57

19.89

.53 

.45 

.79 

1.86 

6.57 

4.59 

1.24 

.73 

.60

19.33

Acre-feet

3,500 

3,390 

2,800

97,510

2,580 

2,220 

3,890 

9,150 

32,200 

22,470 

6,100 

3,590 

2,930

94,820

b Stage-discharge relation affected by ice.

d Doubtful gage-height record; discharge interpolated or computed on basis of records for other 

Salmon River stations.

Mote.- Gage read about thrice weekly; discharge for intervening days interpolated or computed on 

basis of weather records and records for station near Warren, and for Johnson Creek at Yellow Pine.
SALMON RIVER BASIN 217

South Fork of Salmon River near Warren, Idaho

Location.- Staff gage, lat. 45°09', long. 115°35', in SEi sec. 15, T. 21 N., R. 7 E., 

500 reet downstream from Elk Creek, 900 feet north of Elk Creek power plant, and 8 

miles southeast of Warren.

Drainage area.- 1,160 square mile's.

Records available.- July 1391 to September 1941.

Average discharge.- 10 years, 1,568 second-feet.

Extremes.- Maximum discharge observed during year, 9,330 second-feet May 13 (gage height, 

9.60 reet); minimum observed, 280 second-feet Dec. 13 (gage height, 2.72 feet).

1931-41: Maximum discharge observed, 20,000 second-feet June 9, 1933 (gage height, 

13.16 feet), from rating curve extended above 8,000 second-feet; minimum observed, 

180 second-feet Dec. 27, 1939 (gage height, 2.26 feet).

Remarks.- Records good. Gage read twice daily. No appreciable diversions or regulation.

Rating table, water year 1940-41 (gage height, In feet, and discharge, In second-feet)

2.7 

3.0 

3.3 

3.6 

4.0

280

380

505

660

920

4.4 

4.8 

5.2 

5.6 

6.0

1,240

1,600

1,990

2,420

2,890

6.4 

6.8 

7.2 

7.6 

8.0

3,420

4,020

4,680

5,380

6,110

6,870

7,660

8,480

9,330

Discharge, In second-feet, water year October 1940 to September 1941

D«y

1 

2 

3 

4 

5

6

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21

go

23 

24 

25

26

27 

28 

29 

SO 

51

Oct.

780 

850 

1,240 

1,080 

885

815 

750 

720 

690 

660

632 

632 

605 

580 

580

555 

555 

53O 

53O 

505

505 

505 

505 

505 

1,080

1,000 

850 

780 

720 

720 

750

Nov.

815 

S50 

885 

815 

690

750 

780 

850 

815 

750

660 

555 

460 

580 

632

660 

690 

750 

660 

632

660 

605 

505 

632 

632

580 

580 

605 

720 

720

Dec.

660 

660 

660 

660 

632

632 

605 

605 

605 

482

420 

380 

310 

328 

400

482 

555 

780 

815 

690

660 

632 

605 

605 

605

580 

605 

605 

505 

53O 

555

Jan.

482 

362 

380 

460 

580

580 

580 

555 

505 

482

440 

420 

440 

482 

530

530 

530 

53O 

555 

555

530 

530 

505 

505 

505

530 

482 

400 

380 

400 

460

Month

Dot 

Nov 

Dec

C

Jam

Feb 

Mar 

Apr 

Hay 

Jum 

Jul 

Augi 

Sep

W

ember. ....................

uary

ater year 1940-4]

Feb.

505 

505 

482 

460 

420

440 

505 

530 

53O 

505

530 

530 

505 

530 

460

440 

460 

482 

580 

530

505 

505 

530 

530 

530

482 

505 

555

Secondfoot-days

22,094 

20,518 

17,848

604,971

15,205 

14, 071 

23,438 

51,290 

178,000 

127,260 

41,135 

21,747 

17, 641

550,247

Mar.

720 

780 

720 

660 

660

632 

605 

605 

632 

632

605 

605 

660 

555 

580

632 

660 

720 

780 

780

750 

750 

750 

750 

750

815 

920 

1,000 

1,160 

1,240 

1,330

Maximum

1,240 

885 

815

9,770

580 

580 

1,330 

3,560 

9,330 

6,110 

2,420 

850 

660

9,330

Apr.

1,420 

1,690 

1,690 

1,510 

1,510

1,420 

1,420 

1,420 

1,420 

1,600

1,510 

1,510 

1,420 

1,510 

1,600

1,510 

1,420 

1,330 

1,240 

1,330

1,330 

1,330 

1,510 

1,790 

1,990

2,090 

2,420 

2,770 

3.020 

3,560

May

4,180 

4,340 

4,680 

5,020 

4,850

4,180 

3,560 

3,560 

3,420 

3,420

4,340 

6,300 

9,330 

8,480 

6,870

6,490 

6,490 

6,300 

5,380 

5,020

5,200 

5,740 

6,870 

7,660 

8,060

7,460 

7,460 

6,300 

5,560 

5,560 

5,920

M^Tiiwnym

505 

460

310

295

362 

420 

555 

1,240 

3,420 

2,420 

850 

632 

530

310

June

5,560 

5,020 

5,380 

5,380 

5,020

4,850 

5,200 

5,560 

5,020 

4,340

4,340 

4,340 

4,680 

4,850 

4,340

4,180 

3,560 

4,180 

6,110 

5,020

4,020 

3,710 

3,420 

3,150 

2,890

2,770 

2,650 

2,650 

2,650 

2,420

Mean

713 

684 

576

1,653

490 

503 

756 

1,710 

5,742 

4,242 

1,327 

702 

588

1,508

July

2,420 

2,200 

2,200 

2,090 

1,990

1,790 

1,690 

1,600 

1,510 

1,420

1,420 

1,330 

1,240 

1,240 

1,240

1,160 

1,160 

1,080 

1,160 

1,080

1,000 

1,000 

920 

885 

850

885 

920 

920 

1,000 

885 

850

Per 

square 

mile

0.615 

.590 

.497

1.42

.422 

.434 

.652 

1.47 

4.95 

3.66 

1.14 

.605 

.507

1.30

Aug.

815 

780 

780 

720 

690

660 

632 

632 

660 

780

720 

850 

780 

690 

660

660 

632 

660 

720 

720

750 

690 

690 

720 

690

690 

720 

660 

632 

632 

632

Sept.

605 

60S 

632 

632 

632

605 

605 

605 

680 

580

555 

555 

580 

580 

605

660 

605 

580 

605 

660

605 

580 

580 

555 

555

555 

555 

530 

530 

530

Run-off

Inches

0-71 

.66 

.57

19.39

.49 

.45 

.75 

1.64 

5-71 

4.08 

1.31 

 70 

.57

17.64

Acre-feet

43,820 

40,700 

55,400

1,200,000

30,160 

27,910 

46, 490 

101,700 

353,100 

252,400 

81,590 

43,130 

34,990

1,091,000
218 SALMON RIVER BASIN 

East Fork of South Fork of Salmon River at Stlbnlte, Idaho

Location.- Water-stage recorder, lat. 44°54', long. 115°19', In about sec. 14, T. 18 N., 

R. 9 E., 30 feet downstream from Meadow Creek, half a mile northe'ast of Stibnite post 

office, and 10i miles upstream from Johnson Creek.

Drainage area.- 19.5 square miles.

Records available.- June 1928 to September 1941.

Average discharge.- 13 years, 23.2 second-feet.

Extremes.- Maximum discharge during year, 139 second-feet May 26 (gage height, 3.39 feet); 

minimum not determined.

1928-41: Maximum discharge recorded, 369 second-feet June 14, 1933 (gage height, 

4.49 feet); minimum discharge, 2 second-feet Oct. 29, 1936 (gage height, 1.71 feet).

Remarks.- Records good except those for Mar. 1-30, Aug. 18 to Sept. 30, which are fair, 

and those for Nov. 10 to Feb. 28, which are poor. Slight regulation by reservoir 

on South Fork of Meadow Creek (capacity, about 700 acre-feet) and by a diversion 

from Meadow Creek of about a third of a second-foot for transporting mine tailings.

Cooperation.- Gage-height record furnished by Bradley Mining Co.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

18 

26 

19 

15 

14

14 

16 

14 

13 

13

14 

12 

13 

14 

20

12 

11 

11 

12 

14

IS 

el4 

11 

11 

16

15 

13 

13 

14 

16 

17

Nov.

20 

18 

12 

11

elO

12 

14 

13 

12 

ell

elO

> eS

/

Dec.

> 

 *e7

/

Jan.

\

 e6

/

Feb.

>

 e6

/

Month

Oct 

NOT 

Dec

C

Jar 

Pel 

Mai 

Api 

Maj 

Jui 

Ju3 

Auj 

Sej

H

alendar year 1940. .....................

ater year 1940-4 ^

Mar.

-V

' e7

h7 

e7 

e7

e7 

e7 

h7 

e7 

e7

e7 

h7 

e7 

h7 

e8

eB 

e9 

hlO 

ell 

e!2 

13

Apr.

14 

17 

15 

15 

16

14 

14 

15 

16 

16

19 

21 

24 

21

18

15 

14 

14 

14

14

14 

16 

19 

21 

24

26 

30 

36 

43 

51

Secondroot-days

451 

295

217

8,822

186 

168 

239 

606 

2,631 

2,030 

756 

450 

360

8,389

May

56 

58 

60 

63 

60

54 

51 

55 

50 

53

64 

89 

125 

107 

93

8S 

90 

90 

84 

82

86 

94 

110 

127 

130

128 

114 

97 

92 

92 

89

Maximum

26 

20

155

13 

51 

130 

85 

43

130

June

85 

82 

82 

82 

78

78 

85 

85 

80 

78

78 

77 

79 

78 

68

64 

62 

68 

72 

63

56 

54 

56 

53 

46

49 

48 

51 

49

44

July

43 

39 

3S 

41 

36

32 

34 

33 

32 

29

26 

23 

23 

21 

20

20 

21 

20 

19 

19

18 

IS 

18 

IS 

18

17 

17 

18 

16 

15 

14

Minimum

11

-

14 

50 

44 

14

-

Aug.

14 

14

15 

15 

14

14' 

13 

14 

18 

16

16 

18 

15 

14 

15

14 

, 15

. e!4

;

Mean

14.5 

9.8 

7.0

24.1

6.0 

6.0 

7.7 

20.2 

84.9 

67.7 

24.4 

14.5 

12.0

23.0

Sept.

> 

. e!2

t

Run-off In 

acre-feet

895 

585 

430

17,490

369 

333 

474 

1,200 

5,220 

4,030 

1,500 

893 

714

16,640

* Winter discharge measurement made on this day.

e Stage-discharge relation affected by ice or gage-height record missing or not representative Of 

mean stage; discharge Interpolated or computed on basis of one discharge measurement, weather 

records, and records for other South Fork Salmon River stations.

h Computed from staff-gage readings.
SALMON RIVER BASIN 219

East Fork of South Fork of Salmon River near Stibnite, Idaho

Location.- Staff gage, lat. 44°56', long. 115°20', in sec. 34, T. 19 N., R. 9 E., 200

 feet downstream from Sugar Creek, 3 miles north of Stibnite post office, and 8& miles 

upstream from Johnson Creek.

Drainage area.- 42.5 square miles.

Records available.- June 1928 to September 1941 (discontinued).

Average discharge,.- 13 years, 50.4 second-feet.

Extremes.- Maximum and minimum discharges during year not determined.

 1928-40: Maximum discharge observed, 783 second-feet June 15, 1933 (gage height, 

3.51 feet), from rating curve extended above 500 second-feet; minimum observed, 10 

second-feet Apr. 7, 1929, and Apr. 7, 1936, but may have been less during periods 

of ice effect.

Remarks:- Records fair except those for November to February, which are poor. Some regu-

 lation by Bradley Mining Co.'s power plant above station and auxiliary storage reservoir on South Fork of Meadow Creek (capacity, about 700 acre-feet). Gage read once 

daily.

Cooperation.- Gage-height record furnished by Bradley Mining Co.

Discharge, in second-feet, water year October 1940 to September

Day

1 

2 

S 

4 

6

6

7 

8 

9 

10

11 

12 

IS 

14 

16

16 

17 

18 

19

20

31 

23 

2S 

24 

26

26 

27 

28 

S9 

30 

SI

Oct.

21 

30 

20

21 

19

21 

21 

31

26 

20

Nov.

19 

IS 

18

Dec. Jan.

Month

Oct 

Nor 

Dec

C

Jan 

Peb 

Mar 

Apr 

Hay 

Jun 

Jul 

Auff

Sep 

w

uary

,:::::*:::::::::::::::::::

ater year 1940-4

19

18 

IS

16

17

19

Feb.

18

17

17 

17

17

17

18 

19

19

Seoondfoot-days

682 

570 

527

1B.401

527 

476 

683 

1,320 

4,960 

3,750 

1,550 

930 

S10

16,784

Mar.

19 

19

20 

20

20 

SI

22 

23

36 

37 

27

H^

;

365

t

-

Apr.

38

30 

30

33 

30

60 

S3

May

106 

314

MtnlimMM

:

.

:

-

June

92 

88

Mean

622 

619 

617

50.3

e!7 

e!7 

622 

644 

elSO 

el25 

e50 

e30 

e27

46.0

July

t31

Per 

square 

mile

0.51B 

.447 

.400

1.18

.400 

.400 

.518 

1.04 

3.76 

2.94 

1.18 

.706 

.635

1.08

Aug.

t31

Sept.

Run-off

Inches Acre-feet

0.60 1,350 

.50 1,130 

.46 1,050

16.09 36,500

.46 1,050 

.42 944 

.60 1,350 

1.16 2,620 

4.34 9,840 

3.28 7,440 

1.36 3,070 

.81 1,840 

.71 1,610

14.70 33,290

t Result of discharge measurement, 

e Discharge computed on basis of 

for nearby stations.

461677 0-42-15

:aslonal figures of dally discharge, weather records and records
220 SALMON RIVER BASIN

East Fork of South Fork of Salmon River near Yellow Pine, Idaho

Location.- Water-stage recorder, lat. 44°58', long. 115°27', in NEi sec. 27, T. 19 N., 

R. 8 E., 200 feet upstream from Forest Service highway bridge, 14 miles east of 

Yellow Pine, 1& miles upstream from Quartz Creek, 2 miles downstream from Profile 

Creek, and 2.8 miles upstream from Johnson Creek.

Drainage area.- 104 square miles.

Records' available.- August 1928 to September 1941.

Average discharge.- 13 years, 135 second-feet.

Extremes.- Maximum discharge during year, 796 second-feet May 13 (gage height, 3.54 feet); 

minimum not determined.

1928-41: Maximum discharge, 2,050 second-feet June 14, 1933 (gage height, 5.26 

feet), from rating curve extended above 1,100 second-feet; minimum discharge recorded, 

25 second-feet Oct. 23, 1935, but may have been less during periods of Ice effect.

Remarks.-Records good except those for Nov. 11 to Apr. 16, which are fair. Slight regula- 

 lion 'by Bradley Mining Co.'s power plant on this stream and small reservoir on South 

Fork of Meadow Creek.

Discharge, in second-feet, miter year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

80

81 

SZ 

23 

24 

85

25 

87 

88 

29 

30 

31

Oct.

74 

90 

105 

94 

SB

83 

83 

82 

80 

77

76 

72 

71 

71 

71

71 

68 

65 

64 

63

63 

62 

62 

65

87

71 

70 

67 

65 

63 

62

Nov.

62- 

62 

62 

62 

65

68 

68 

70 

67 

65

1)55 

b45 

b40 

b50 

b55

. a55

j

Dec.

\

. a50

<

Jan.

' a50

; I

Month

Oct 

Nor 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

Water year 1940-42

Feb.

>

' a50 

*

Becondfoot-days

2,285 

1,721 

1,550

50,378

1,550 

1,400 

1,860 

3,352 

14,001 

10,436 

4,527 

2,653 

2,174

47,509

Mar.

-\

> a60 

j

Maximum

105 

70

831

279 

736 

438 

238 

99 

82

736

Apr.

aSO 

a90 

a90 

a 85 

a 80

a 80 

a 80 

a80 

a 85 

a90

a90 

a9S 

allO 

a!05 

alOO

alOO 

h97 

S7 

83 

85

85 

S7 

97 

116 

132

154 

173 

199 

238 

279

May

302 

305 

315 

315 

302

266 

248 

244 

232 

24S

315 

' 491 

736 

a650 

a550

a540 

a540 

a520 

a440 

a420

a450 

a500 

622 

698 

680

650 

588 

496 

450 

442 

446

Nln^Bnnn

62

-

80 

232 

244 

96 

76 

63

-

June

425 

408 

408 

40S 

3SS

373 

417 

438 

412 

38S

3S1 

384 

392 

388 

351

329 

312 

351 

392 

354

326 

302 

292 

279 

266

254 

254 

257 

263 

244

July

238 

229 

223 

214 

202

190 

185 

179 

173 

168

160 

151 

144 

141 

136

132 

127 

127 

124 

120

114 

112 

109 

107 

107

105 

105 

109 

103 

97 

96

Per 

Mean square 

mile

73 . 7 0 . 709 

57.4 .552 

50.0 .481

138 1.33

50.0 .481 

50.0 .481 

60.0 .577 

112 1.08 

452 4.35 

348 . 3.35 

146 1.40 

85.6 .823 

72.5 .697

130 1.25

Aug.

97 

94 

90 

88 

88

87 

83 

83 

99 

76

S7 

96 

87 

83 

82

83 

80 

80 

80 

88

90 

87 

88 

87 

82

85 

85 

80 

SO 

80 

78

Sept.

77 

77 

77 

78 

77

74 

74 

77 

76 

74

72 

74 

74 

72 

76

74 

72 

71 

82 

77

76 

a73 

a70 

a6B 

a66

aS4 

a63 

h63 

a63 

a63

Run-off

Inches

0.82 

.62 

.55

18.01

.55 

.50 

.67 

1.20 

5.02 

3.74 

1.61 

.95 

.78

17.01

Acre-feet

4,530 

3,410 

3,070

99,910

3,070 

2,780 

3,690 

6,650 

27,770 

20,700 

8,980 

5,260 

4,310

94,220

a No gage-height record; discharge computed on basis of weather records and records for nearby 

stations.

t> Stage-discharge relation affected by ioe. 

h Computed from staff-gaee readings.
SALMON RIVER BASIN 221

Johnson Creek at Yellow Pine, Idaho

Location.- water-stage recorder, lat. 44°58', long. 115°30', In NE* sec. 29, T. 19 N., R. 

8 E., 700 feet upstream from mouth ajid a quarter of a mile southwest of Yellow Pine 

post office.

Drainage area.- 213 square miles.

Records available.- August 1928 to September 1941.

Average discharge.- 13 years, 284 second-feet.

Extremes.- Maximum discharge during year, 2,520 second-feet May 13 (gage height, 5.14 

reet); minimum, 39 second-feet sometime during period Dec. 12-14 (gage height, 0.89 

foot, from recorded range In stage).

1928-41: Maximum discharge, 5,150 eecond-feet June 9, 1933 (gage height, 7.62 feet), 

from rating curve extended above 2,800 second-feet; minimum, 22 second-feet Nov. 30, 

1933; minimum gage height, 0.70 foot Nov. 30, 1937.

Remarks.- Records good. During late fall of 1936, the Bureau of Reclamation cut trans- 

 mountain channel to divert a small flow from a tributary of Johnson Creek to Deadwood 

River Basin to supplement storage In Deadwood Reservoir. Measurement of May 24 

indicated flow in diversion of 32.9 second-feet; July 1, 6.6 second-feet; Aug. 14, 1.6 

second-feet.

Rating table, mater year 1940-41, except periods of Ice effect (gage height, In feet, 

and discharge, In second-feet)

1.0 

1.2 

1.4 

1.7 

2.0

51

SO

118

196

296

2.4

2.5 

3.2 

3.6 

4.0

463

666

906

1,176

1,470

4.4 

4.8 

5.2

1,SOO 

2,170 

2,580

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2

S 

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

15

IS 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Dot.

132 

169 

212 

179 

162

144 

134 

130 

123 

116

112 

110 

106 

102 

100

96 

94 

93 

89 

86

66

87 

87 

91 

1S2

173 

154 

141 

130 

127 

132

Nov.

136 

144 

144 

126 

110

134 

139 

132 

134 

120

112 

67 

82 

108 

114

116 

126 

127 

110 

112

120 

108 

98 

110 

110

104 

104 

108 

120 

112

Dec.

114 

116 

118 

116 

114

114 

110 

108 

106 

84

70 

a60 

a55 

a 70 

77

77 

S7 

100 

106 

b!06

106

106 

104 

104 

102

100 

102 

94 

87 

98 

98

Jan.

80 

76 

74 

89 

96

98 

96 

93 

91 

91

89 

S7 

94 

94 

93

91 

91 

93 

93 

93

93 

91 

91 

89 

91

89 

78 

78 

78 

S2 

87

Month

Oet 

HOT 

Dec

0

Jan 

Feb! 

Man torMay 

Juni 

Jul 

Aug 

Sep

W

nary

Jit::::::::::::::::::::::: t«nber....................

iter year 1940-4]

Feb.

S7 

93 

S4 

84 

62

S7 

91 

89 

91 

91

91 

91 

86 

87 

77

80 

S4 

89 

91 

87

86 

86 

S5 

87 

86

78 

87 

91

Seoondfoot-days

3,867 

3,606 

3,009

118,603

2,748 

2,424 

3,589 

9,881 

41,144 

24,986 

6,699 

3,736 

2,988

108,576

Mar.

102 

100 

94 

93 

96

91 

91 

93 

94 

93

96 

93 

102 

87 

100

100 

104 

116 

116 

US

112 

118 

120 

116 

123

134 

149 

164 

182 

190 

202

Haximun

212 

144 lie

2,520

98 

93 

202 

84C 

2,270 

1,210 

41S 

169 

126

2,270

Apr.

227 

264 

260 

247 

247

234 

230 

240 

260 

271

a26$ 

a268 

a266 

a265 

a263

a262 

260 

253 

240 

250

260 

271 

323 

371 

405

468 

525 

626 

726 

840

Hay

970 

970 

1,100 

1,140 

1,040

906 

872 

906 

S72 

970

1,210 

1,630 

2,270 

1,890 

1,590

1,470 

1,470 

1,430 

1,180 

1,140

1,280 

1,430 

1,590 

1,760 

1,670

1,710 

1,590 

1,320 

1,210 

1,240 

1,320

FH^JTIPOT

85 

82 

65

51

74 

77 

87 

227 

872 

432 

134 

100 

87

66

June

1,210 

1,100 

1,100 

1,140 

1,040

970 

1,040 

1,210 

1,000 

906

906 

938 

970 

970 

840

768 

714 

905 

1,070 

872

709 

643 

590 

545 

510

482 

472 

477 

468 

432

Mean

125 

117 

97.1

324

88.6 

86.6 

116 

329 

1,327 

833 

216 

121 

99.6

297

July

41S 

379 

367 

334 

316

296 

274 

260 

247 

237

227 

221 

212 

202 

190

1S2 

179 

179 

187 

170

162 

154 

146 

141 

136

136 

144 

164 

162 

144 

134

Per 

square 

mile

0.687 

.549 

.466

1.52

.416 

.407 

,545 

1.54 

6.23 

3.91 

1.01 

.668 

.468

1.39

Aug.

130 

126 

116 

112 

108

104 

102 

100 

123 

134

120 

169 

139 

116 

108

112 

114 

149 

146 

144

132 

126 

120 

120 

116

120 

118 

110 

106 

106 

102

Sept.

96 

96 

IDS 

104 

102

9S 

96 

94 

93 

91

S9 

91 

100 

98 

110

120 

110 

100 

112 

125

112 

104 

100 

96 

94

93 

a91 

S9 

89 

87

Run-off

Inches

0.68 

.61 

.63

20.71

.48 

.42 

.63 

1.72 

7.18 

4.36 

1.16 

.66 

.62

18.94

Acre-feet

7,670 

6,950 

5,970

235,200

6,460 

4,810 

7,120 

19,600 

81,610 

49,560 

13,290 

7,410 

5,930

216,400

a No gage-height record; discharge Interpolated or commuted on basis of records for other 

stations In Salmon River Basin.

b Stage-dlsoharge relation affected by Ice.
222 SALMON RIVER BASIN

Boulder Creek near Tamarack, Idaho

Location.- Water-stage recorder, lat. 45°05', long. 116°27', in SWi sec. 10, T. 20 N., 

R. i w., 350 feet upstream from trans-mountain diversion to Welser River Basin, and 

8 miles northwest of Tamarack.

Drainage area.- 6.5 square miles (revised). Figures of discharge per square mile and 

run-orr in inches for water year 1939-40, published in Water-supply Paper 903, are 

based on original drainage area determination of 5.9 square miles.

Records available.- April 1938 to September 1941 (incomplete).

Extremes.- Maximum discharge during year, 155 second-feet May 13; maximum gage height, 

2.40 reet May 24; minimum discharge not determined, probably occurred during winter.

1938-41: Maximum discharge, 226 second-feet May 27, 1938 (gage height, 2.95 

feet), from rating curve extended above 180 second-feet; minimum not determined.

Remarks.- Records good. No regulation. 

350 reet below station.

Small diversion to Welser River Basin about

Discharge, In seoond-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4 

6

6

7

e

9 

10

11

12 

15 

14 

16

16

17 

18 

19 

20

21 

22 

25 

24

25

26 

27 

28 

29 

30 

51

Oct.

3.2

5.3 

5.0 

4.5 

3.6

3.2

2.S 

2.6 

2.4 

2.3

2.3 

2.1 

2.1 

2.0 

2.0

2.0 

1.8 

1.8 

1.7 

1.7

1.7 

1.7 

1.7 

2.6 

5.3

3.8 

3.4 

3.2 

3.2 

3.4 

3.4

Nov.

3.8 

4.5 

4.1 

3.6 

3.4

3.6 

4.1 

4.1 

4.1

Dec.

tl.8

Jan.

Month

Oot 

Nor 

Dec

0

Jan 

Fob 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

W

ember 1-

uary

eh. .....-----------------.

11 ll-3(

ater year 1940-4]

Peh.

Seoondfoot-days

87.8 

35.3

-

577 

2,289 

739 

177.4 

80.7 

70.3

-

Mar.

f"-',mim

5.3 

4.5

-

78 

137 

41 

11 

4.1 

3.6

-

Apr.

12 

13 

15 

17 

18

18is

18 

20 

20

21 

20 

23 

26 

32

38 

47 

57 

66 

78

May

89 

87 

101 

96 

85

70 

59 

58 

57 

65

82 

113 

137 

113 

94

81 

75 

66 

59 

57

58 

62

66 

75 

73

67 

59 

50 

47 

44 

44

Minimum

1.7 

3.4

-

12 

44 

12 

3.4 

2.1 

1.7

-

June

41 

39 

40 

36 

33

32 

36 

36 

33 

31

30 

2S 

26 

25 

23

22 

20 

22 

23 

20

18 

16 

15 

15 

a!4

12 

13 

13 

13 

12

Mean

2.83 

3.92

-

28.8 

73.6 

24.6 

5.72 

2.60 

2.34

-

July

11 

10 

10 

9.0 

8.3

8.0 

7.3 

7*0 

6.4 

6.4

5.9 

5.9 

5.9 

5.6 

5.3

5.0 

4.7 

4.5 

4.5 

4.3

4.1 

3.S 

3.8 

3.6 

3.6

3.6 

4.3 

4.5 

4.1 

3.6 

3.4

Per 

square

Bile

0.435 

.603

-

4.43 

11.4 

3.78 

.880 

.400 

.360

-

Aug.

3.2 

3.2

3.0 

3.0 

2.8

2.8 

2.6 

2.6 

2.6 

2.6

2.6 

4.1 

3.2 

2.8 

2.4

2.3 

2.1 

2.1 

2.1 

2.3

2.4 

2.4 

2.3 

2.3 

2.4

2.8 

2.8 

2.3 

2.1 

2.4 

2.3

Sept.

2.1 

3.0 

3.2 

3.0 

2.6

2.4 

2.3 

2.3

2.1 

2.1

2.1 

2.3

2.1 

2.1 

2.4

2.1 

2.1 

2.6 

3.6 

3.0

2.6

2.4 

2.1 

2.0 

2.0

2.0 

2.0 

2.0 

2.0 

1.7

Run-off

Inches Acre-foot

0.50 174 

.20 70

-

3.30 1,140 

13.14 4,540 

4.22 1,470 

1.01 352 

.46 160 

.40 139

-

t Result of discharge measurement.

a No gage-height record; discharge Interpolated.
GRANDE RONDE RIVER BASIN 223

Grande Ronde River at La Grande, Oreg.

Location.- Water-stage recorder, lat. 45°21', long. 118°09', In sec. 35, T. 2 S., R. 37 

ti., 2i miles northwest of La Grande and 4 miles downstream from Fivepoint Creek. 

Datum of gage is 2,831.25 feet above mean sea level, datum of 1929.

Drainage area.- 678 square miles.

Records available.- February 1918 to June 1923, October 1925 to September 1941. 

Novemoer 1903 to September 1915, at Hllgard, 4 miles upstream.

Average discharge. 27 years (1906-9, 1910-11, 1912-15, 1918-20, 1921-22, 1925-41), 339 

second-reet.

Extremes.- Maximum discharge during year, 2,540 second-reet June 7 (gage height, 5.36 

reet); minimum, 31 second-reet Oct. 19, 20 (gage height, 1.58 reet).

1903-15, 1918-23, 1925-41: Maximum discharge, 8,880 second-reet Mar. 18, 1932 

(gage height, 8.90 reet); minimum, 3.9 second-reet Aug. 26, 1940 (gage height, 1.23 

feet).

Remarks.- Records rair. Some discharge measurements made at cable 3 miles above recorder. 

Snail diversions above station ror irrigation.

Rating table, ater year 1940-41, except-periods of ice effect and of backwater from debris 

(gage height, in feet, and discharge, in second-feet)

1.6 

1.8 

2.0 

2.2

33

57

95

152

2.4 

2.7 

3.0 

3.3

225

355

510

690

3.6 

4.0 

4.5 

5.0

S90 

1,200 

1,620 

2,130

Discharge, In seoond-feet, water year October 1940 to September1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

42 

50 

89 

78 

67

56 

49 

44 

42

40

38 

37 

36 

35 

35

34

S3 

32 

31 

31

32 

32 

33 

33 

37

4S 

64 

57 

54 

54 

59

Nov.

64 

72 

84 

74 

66

72 

69

78 

87 

S7

84 

80 

67 

b56 

bSO

b84 

b86 

123 

110 

142

142 

108 

84 

108 

102

*95

120 

380 

1,200 

1,050

Dec.

672 

570 

499 

494 

494

510 

440 

375 

342 

245

210 

159 

b!49 

b!44 

b!54

b!61 

b!73 

b!85 

b!70 

b!60

b!70 

*184 

159 

152 

146

130 

146 

146 

118 

133 

120

Jan.

72 

b65

bl!5 

b!45 

bl68

b!55 

b!3S 

bllO 

b90 

b66

b65 

b69 

b70 

b68 

b80

b78 

b75 

b74 

b77 

82

84 

89 

93 

*108

130

206 

159 

126

112 

108 

126

Feb.

120 

115 

102 

102 

100

118 

136 

136 

133 

162

162 

195 

176 

162 

139

126 

133 

130 

139 

139

142 

149 

166 

245 

241

206 

225 

296

Month

Oct 

No\ 

Dot

C

Jar 

Pel 

Mai 

Api 

Maj 

Jur 

Ju3 

Auf 

Sej

V

alendar year 194 5 ......................

*ch

 11.... ........ . . ....... .... ... ,.

y.. ....................................

fater year 1940-

Mar.

552 

722 

755 

624 

618

630 

594 

612 

648 

570

522 

472 

395 

346 

342

332 

337 

420 

415 

395

365 

355 

342 

306 

301

310 

328 

360 

405 

466 

 499

Apr.

528 

5S2 

642 

594 

558

499 

460 

430 

440 

494

516 

482 

460 

440 

435

425 

405 

375 

346 

324

310 

301 

292 

346 

395

435 

510 

528 

552 

600

Secondfoot-days

1,402 

5,054 

7,910

85,889

3,203 

4,395 

14,338 

13,704 

19,005 

29,176 

9,841 

1,677 

2,199

111,904

May

S76 

976 

925 

834

781

710 

642 

67S 

618 

600

612 

660 

755

672 

576

522 

630 

748 

672 

612

570 

522 

482 

460 

435

375 

346 

395

445 

410 

466

Maximum

89 

1,200 

672

1,640

206 

296 

755 

642 

976 

2,220 

953 

76 

118

2,220

June

552 

606 

807 

729 

648

636 

2,020 

2,220 

1,740 

1,400

1,140 

976 

953 

827 

904

742 

748 

1,130 

1,290 

1,420

1,180 

968 

800 

742 

834

716 

630 

636 

630 

552

July

494 

499 

710 

S69 

648

672 

953 

666 

540 

450

385 

328 

288 

245 

217

195 

173 

152 

142 

126

115 

102 "95 

91

84

80 

95 

123 

120 

100 

84

Minimum

31 

56 

118

4.5

65 

100 

301 

292 

346 

552 

80 

38 

50

31

Aug.

76 

71 

69 

66 

62

59 

57 

54 

54 

50

50 

59 

59 

49 

52

47 

43 

40 

40

42

43 

38 

43 

45 

45

54 

69 

66 

54

57 

64

Mean

45.2 

168 

255

235

103 

157 

463 

457 

613 

973 

317 

54.1 

73.3

307

Sept.

54 

62 

102 

118 

93

80 

91 

93 

82 

74

71 

72 

74 

74 

72

74 

69 

71 

S7 

82

76 

71 

67 

64 

60

57 

54 

53 

52 

50

Run-off In 

acre-feet

2,780 

10,020 

15 , 690

170,400

6,350 

8,720 

28,440 

87,180 

37,700 

57, 870 

19,520 

3,330 

4,360

222,000

Peak discharge.- Nov. 29 (8 p.m.") 1.790 sec. -ft.: June 7 (6 p.m.) 2,540 sec. -ft.; July 6

(11:30 p.m.) 1,640 sec.-ft.

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice. 

Note.- Backwater from debris Aug. 12 to Sept. 3.
224 GRANDE RONDE RIVER BASIN

Grande Ronde River at Rondowa, Oreg.

Location.- Water-stage recorder, lat. 45°44', long. 177°47', in NWi sec. 23, T. 3 N., 

K. 40 K., at Rondowa, 500 feet downstream from WalIowa River. Datum of gage is 

2,281.4 feet above mean sea level, datum of 1929 (Union Pacific System track profile).

Drainage area.- 2,555 square miles.

Records available.- October 1926 to September 1941.

Average discharge.- 15 years, 1,807 second-feet.

Extremes.- Maximum discharge' during year, 6.280 second-feet June 8 (gage height, 4.96 

reetj; minimum, 458 second-feet Dec. 13 (gage height, 1.19 feet).

1926-41: Maximum discharge, 22,400 second-feet Mar. 18, 1932 (gage height, 9.30 

feet), from rating curve extended above 10,000 second-feet; minimum, 225 second-feet 

Dec. 19, 1935.

Remarks.- Records excellent except thoee for period of ice effect, which are fair. Many 

diversions for irrigation above station. Flow slightly regulated by Wallowa Lake 

Reservoir.

Rating table, water year 1940-41, except period of Ice effect (gage height, In feet, 

and discharge. In second-feet)

1.0 

1.3 

1.6 

1.9

345

535

775

1,060

2.2 

2.6 

3.0 

3.5

1,380

1,870

8,430

3,870

4.0 

4.5 

5.0

4,220

5,860

6,370

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

8 

3 

4 

5

6 

7 

8 

9 

10

11 

18 

13 

14 

15

16 

17 

18 

19 

80

81 

22 

83 

84 

85

26 

27 

26 

89 

30 

31

Oct.

894 

856 

960 

1,040 

941

865 

811 

766 

784 

69S

674 

658 

642 

618 

608

595 

580 

565 

55S 

542

542 

548 

548 

565 

988

874 

1,010 

903 

894 

941 

950

NOT.

932 

1,010 

1,020 

950 

918

982 

941 

9SO 

941 

938

912 

856 

750 

741 

741

758 

680 

856 

820 

775

880 

808 

732 

775 

775

741 

775 

847 

1,630 

2,310

Dec.

2,180 

1,680 

1,700 

1,680 

1,610

1,670 

1,600 

1,500 

1,480 

1,860

1,070 

793 

588 

b550 

b500

b550 

b620 

b800 

894 

990

1,190 

1,110 

1,090 

1,050 

1,020

1,060 

1,670 

1,340 

1,160 

1,080 

1,080

Jan.

808 

656 

674 

802 

808

793 

784 

741 

716 

716

690 

666 

716 

758 

758

741 

758 

960 

1,030 

1,000

990 

941 

950 

1,080 

1,300

1,700 

1,450 

1,850 

1,100 

1,020 

1,000

Feb.

960 

941 

912 

874 

836

S47 

988 

970 

912 

1,070

1,840 

1,430 

1,860 

1,140 

1,060

1,000 

970 

938 

960 

950

960 

970 

1,050 

1,840 

1,190

1,150 

1,180 

1,420

Month

Oct 

Hoi 

Dec

C

Jar 

Fet 

Mai 

Api 

Maj 

Jur 

Ju] 

Aug 

Se]

HI

alendar year 19' 0......................

ater year 1940-4

Mar.

8,110 

8,310 

8,400 

8,310 

2,220

2,140 

2,060 

8,010 

2,010 

1,950

1,870 

1,770 

1,640 

1,540 

1,480

1,430 

1,440 

1,580 

1,570 

1,570

1,520 

1,490 

1,460 

1,480 

1,370

1,370 

1,400 

1,490 

1,580 

1,780 

1,880

Apr.

2,000 

2,810 

8,480 

2,480 

2,380

2,250 

8,140 

2,070 

2,060 

2,110

8,180 

2,110 

8,080 

8,060 

8,040

8,000 

1,940 

1,870 

1,790 

1,780

1,670 

1,640 

1,680 

1,740 

1,870

8,000 

2,810 

2,420 

8,590 

2,890

Secondfoot -days

23,874 

27,776 

36,565

608, 191

28,346 

29,888 

54,110 

62,560 

115,790 

135,350 

53,121 

17, 828 

28, 000

618,088

May

3,600 

3,670 

4,080 

3,940 

3,770

3,410 

3,140 

3,000 

8,850 

2,880

3,130 

4,160 

5,030 

4,480 

3,850

3,680 

4,060 

4,240 

3,890 

3,680

3,580 

3,740 

4,040 

4,440 

4,420

4,860 

3,830 

3,340 

3,140 

3,070 

3,310

Maximum

1,040 

2,310 

8,160

5,850

1,700 

1,430 

2,400 

8,890 

5,030 

6,070 

3,890 

738 

1,130

6,070

June

3,400 

3,400 

3,510 

3,580 

3,530

3,450 

5,050 

6,070 

5,740 

5,390

5,160 

5,070 

5,440 

5,280 

5,180

4,840 

4,940 

5,090 

5,840 

5,130

4,780 

4,570 

4,460 

4,840 

3,960

3,450 

3,110 

3,280 

4,630 

4,400

July

3,890 

3,600 

3,780 

3,600 

3,470

3,140 

3,090 

8,970 

8,560 

2,840

8,010 

1,840 

1,680 

1,580 

1,400

1,890 

1,190 

1,060 

1,010 

918

889 

741 

690 

642 

' 608

565 

595 

588 

578 

550 

535

Minimum

548 

738 

500

860

658 

838 

1,370 

1,640 

8,880 

3,110 

535 

500 

690

500

Aug.

588 

588 

535 

580 

565

535 

514 

507 

514 

507

521 

572 

580 

535 

581

514 

507 

500 

548 

634

595 

595 

595 

572 

588

666 

698 

674 

650 

732 

784

Mean

751 

986 

1,180

1,668

914 

1,046 

1,745 

2,085 

3,735 

4,518 

1,714 

575 

933

1,677

Sept.

690 

716 

938 

1,010 

1,100

1,020 

990 

990 

950 

932

694 

903 

932 

932 

990

990 

930 

980 

1,130 

1,080

1,050 

990 

950 

922 

894

856 

829 

811 

802 

775

Run-off In 

acre-feet

46,160 

55,090 

72,570

1,806,000

56,220 

58,090 

107,300 

184,100 

229,700 

868,500 

105,400 

35,360 

55,540

1,814,000

b Stage-discharge relation affected by Ice.
ORANDE RONDE RIVER BASIN 225

Catherine Creek near Union, Oreg.

Location.- Water-stage recorder, lat. 45°09', long. 117°47', in SEi sec. 2, T. 5 S., R. 

40 t;., 3 miles downstream from Little Catherine Creek and 6 miles southeast of Union. 

Datum of gage is 3,082.11 feet above mean sea level, datum of 1929.

Drainage area.- 105 square miles.

Records available.- May 1906 to May 1907 (gage heights only), August 1911 to December 

 191iJ, March to September 1915,'February 1918 to August 1919, October 1925 to September 

1941.

Average discharge.- 18 years (1911-12, 1918-19, 1925-41), 115 second-feet.

Extremes.- Maximum discharge during year, 500 second-feet May 13 (gage height, 2.89 feet); 

minimum, 24 second-feet Oct. 19-22.

1906-7, 1911-12, 1915, 1918-19, 1925-41: Maximum discharge observed, 1,240 secondfeet May 21, 1912, June 3 or 4, 1933; minimum, 4 second-feet Nov. 26, 27, 1930.

Remarks.- Records fair except those for periods of ice effect, which are poor. A few 

small diversions above station for irrigation and some water diverted into Big Creek, 

in Powder River Basin.

Rating tables, water year 1940-41, except periods of ice effect or backwater from drift 

(gage height, in feet, and discharge, in second-feet)

Oct. 1 to Apr. 29 Apr. 30 to Sept. 30

0.8 26 1.4 84 2.0 203 1.0 44 1.6 133 2.3 306 

1.0 41 1.6 118 2.3 275 1.2 67 1.8 176 2.6 397 

1.2 60 1.8 159 2.6 360 1.4 97 2.0 225 2.9 504

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

37 

39 

45 

51 

45

39 

35 

33 

32 

30

29 

28 

27 

27 

27

26 

25 

25 

24 

24

24 

24 

25 

41 

62

53 

60 

50 

52 

53 

53

HOT.

55 

69 

63 

57 

55

53 

54 

53 

52 

51

50 

46 

b39 

b35 

b43

b45 

4S 

47 

39 

46

44 

*37 

41 

40 

3S

35 

36 

40 

55 

56

Dec.

54 

55 

57 

61 

64

6S 

66 

63 

60 

53

b50 

b55 

b52 

b58 

b66

b70 

b73 

b77 

b74 

b71

*b76 

57 

59 

59 

58

61 

72 

66 

60 

56 

50

Jan.

b4S 

b45 

b51 

b60 

b70

b62 

b50 

46 

37 

34

32

33 

35 

39 

38

37 

39 

40 

43 

44

45 

46 

45 

#49 

52

52 

48 

47 

47 

48 

46

Feb.

46 

45 

42 

41 

42

44 

4S 

46 

47 

49

53 

54 

53 

50 

49

47 

4S 

46 

45 

45

45

45 

47 

53 

53

54 

54 

37

Month

Oct 

Ho-v 

Dec

C

Jar 

Pet 

Mai 

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

VI

alendar year 1940... ...................

ater year 1940-4

Mar.

179 

205 

185 

161 

144

128 

120 

122 

130 

128

126 

124 

114 

105 

102

104 

120 

140 

133 

134

123 

124 

114 

104 

104

114 

134 

159 

181 

203 

219

Apr.

245 

270 

268 

262 

262

245 

22S 

219 

223 

233

221 

214 

217 

226 

236

219 

203 

135 

179 

179

131 

133 

208 

224 

240

253 

288 

306 

330 

400

Secondfoot-days

1,145 

1,422 

1,921

37,393

1,403 

1,378 

4,298 

7,162 

10,400 

7,524 

2,864 

1,380 

1,696

42, 598

May

474 

437 

452 

407 

375

335

309 

292 

273 

298

347 

420 

466 

397 

362

341 

341 

312 

2S6 

273

275 

292 

323 

341 

329

323

295 

275 

248 

238 

259

Maximum

62 

69 

77

477

70 

37 

219 

400 

474 

356 

131 

87 

109

474

June

243 

233 

223 

213 

218

225 

315 

356 

347 

323

306 

306 

312 

292 

281

259 

270 

275 

267 

243

225 

215 

205 

210 

203

181 

169 

176 

225 

193

July

131 

176 

172 

156 

144

133 

129 

US 

111 

104

99 

94 

89 

84 

80

77 

73 

71 

70 

65

62 

60 

59 

57 

55

55 

63 

60 

57 

53 

52

Aug.

4S 

47 

47 

47 

45

43 

41 

41 

40 

39

42 

46 

38 

37 

34

34 

33

36 

37 

53

43 

40. 

40 

37 

47

59 

53 

42 

43 

53 

45

Sept.

41 

67 

106 

109 

78

66 

63 

59 

54 

53

51 

53 

59 

55 

60

55 

51 

56 

59 

54

52 

50 

47 

46 

45

43 

43 

41 

40 

40

Mini'- *« arre-feeV

24 36.9 2,270 

35 47.4 2,820 

50 62.0 3,310

17 102 74,150

32 45.4 2,790 

41 49.2 2,730 

102 139 8,520 

179 239 14, 210 

238 335 20,630 

169 251 14,920 

52 92.4 5,630 

33 44.5 2,740 

40 56.5 3,360

24 117 84,430

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note.- Backwater from drift Mar. 23-31; discharge computed on basla of gage heights and engineer 1 

notes.
226 GRANDE RONDE RIVER BASIN

East Fork of Wallowa River near Joseph, Oreg.

Location.- Staff gage, lat. 45°16', long. 117°13', in SWi sec. 29, T. 3 S., R. 45 E., a '

 quarter of a mile upstream from mouth, 1 mile upstream from Wallowa Lake, and 6 miles 

south of Joseph. Datum of gage is 4,517.69 feet above mean sea level, datum of 1929.

Drainage area.- 9.6 square miles.

Records available.- July 1924 to September 1941.

Average discharge.- 17 years, 11.6 second-feet.

Extremes.- Maximum discharge observed during year, 54 second-feet June 23, 25, 28 (gage

 height, 1.66 feet); minimum observed, 0.6 second-foot (regulated) Feb. 10 (gage height, 

0.70 foot).

1924-41: Maximum discharge, 300 second-feet, based on extension of rating curve 

above 80 second-feet and unpublished records of storage in Wallowa Lake Reservoir, 

July 25, 1937 (gage height, 3.63 feet, from floodmark); minimum observed, 0.1 secondfoot (regulated) Dec. 7, 1929, Nov. 1, 6, 1935.

Remarks.- Records fair except those for periods of ice effect, which are poor. Wallowa

 Palls power plant of Inland Power & Light Co., diverts water 1 mile above station. 

Gage read twice daily.

Rating tables, ater year 1939-41, except periods of ice effect (gage height, In feet, 

and discharge, In second-feet)

Oct. 1 to Jan. 7 Jan. S to Sept. 30

0.7 O.4 0.7 0.6 1.3 22 

.9 3.7 .9 4.0 1.5 3S 

1.1 10.6 1.1 11.4 1.7 59 

1.3 21

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

30 

31

Oct.

12 

11 

12 

10 

8.6

9.8 

6.7 

6.1 

5.2 

4.3

5.2 

5.2

7.5 

4.6 

4.6

3.7 

3.7 

3.7 

4.3 

e5.8

4.0 

4.3 

6.4 

12 

10

9.4 

elO 

6.7 

6.7 

5.5 

5.5

Nov.

4.9 

5.5 

7.5 

3.3 

2.4

4.0 

6.7 

6.1 

5.5 

e6.6

bS.l 

b2.5 b.a

b3.2 

b4.0

4.9 

5.5 

3.3 

b2.6 

1.6

4.9 

#2.9 

b2.3 

b4.8 

3.7

3.7 

3.3 

3.3 

4.9 

2.9

Dec.

5.5 

3.1 

3.5 

3.1 

3.3

3.7 

3.1 

4.3 

2.0

4.3

b4.2 

b2.0 

a2.2

Bl.7

a3.6

a2.2 

a2.2 

a2.2 

2.6 

4.3

3.7 

4.6 

2.4 

2.4

4.0

2.9 

4.3 

2.9 

e4.0 

2.4 

b2.0

Jan.

b2.7 

al.6 

bl.4 

bl.4 

b2.1

bl.4 

bl.4 

bl.4 

1.4 

1.-7

2.4 

2.6

1.7 

2.0 

2.2

2.0 

2.6 

3.8 

3.6

2.0 

2.0 

2.0 

2.4 

2.2

be3.7 

2.0 

1.9 

bl.9 

1.7 

1.4

Feb.

2.2 

3.2 

1.4 

1.6 

2.8

1.7 

1.7 

2.0 

3.0 

1.6

2.0 

2.2 

2.6 

2.0 

b2.0

a2.7 

a2.0 

a2.0 

a2.0 

a2.2

2.2 

2.6 

e3.6 

1.7 

1.4

bl.7 

4!o

Month

Oct 

Not 

Dec

C

Jar 

Fet 

Max 

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

11

alendar year 19' 0.... ..................

ater year 1940-4

Mar.

2.6 

3.8 

2.6 

1.9 

1.6

2.0 

1.7 

2.0 

e3.3 

2.0

1.7 

bl.5 

bl.7 

bl.6 

b2.0

2.4 

2.0 

2.0 

1.9 

3.0

2.6 

1.6 

e3.3 

1.4 

1.7

1.7 

1.9 

1.9 

1.9 

e5.8 

1.7

Apr.

1.7 

2.4 

2.4 

2.8 

2.8

3.6 

2.2 

2.2 

2.4 

2.4

2.4 

2.8 

3.2 

1.7 

2.0

1.9 

1.9 

2.6 

3.0

4.3

2.2 

2.0 

3.0 

3.4 

3.8

5.5 

e6.1 

6.7 

11 

11

Secondfoot-days

214.5 

122.7 

9S.7

3,366.6

64.8 

62.3 

68. S 

105.4 

736.6 

1,239 

945 

288.9 

212.2

4,158.9

* Winter discharge measurement made on this day.

May

16 

13 

16 

e!6 

12

12 

11 

9.6 

10 

12

14 

18 

32 

27 

25

26 

28 

28 

22 

21

25 

26 

31 

36 

e40

38 

33 

33 

35 

37 

35

Maximum

12 

7.5 

5.5

46

3.S

4.0 

5.8 

11 

40 

54 

50 

15 

14

54

June

34 

32 

229 

30 

30

33 

42 

37 

36 

36

38 

36 

36 

38 

46

42 

42 

48 

48 

46

46 

e49 

51 

50 

50

46 

42 

54 

46 

46

July

44 

40 

48 

49 

50

46 

46 

44 

44 

38

34 

33 

32 

29 

29

29 

27 

25 

26 

25

21 

21 

20 

20 

19

15 

21 

20 

19 

16 

15

Aug.

15 

14 

14 

11 

11

10 

9.2 

9.2 

9.2

612

10 

11 

8.8 

7.0 

6.7

6.4 

8.8 

6.7 

7.9

7.4

6.4 

8.8 

8.8 

11 

8.3

10 

9.2 

7.9 

7.0 

7.0 

9.2

Minimum Mean

3.7 6.92 

.8 4.09 

1.7 3.18

.8 9.20

1.4 2.09 

1.4 2.22 

1.4 2.22 

1.7 3.51 

9.6 23.8 

29 41.3 

15 30.5 

6.4 9.32 

3.8 7.07

.S 11.4

Sept.

8,8 

7.0 

7.9 

7.4 

7.0

6.4 

e!4 

6.7 

6.4 

6.1

6.4 

6.1 

5.5 

9.6 

6.7

5.8 

5.2 

S.S 

8.3 

11

11 

7.4 

6.1 

5.2 

4.6

4.9 

5.5 

8.3 

4.3 

3.8

Run-off In 

acre-feet

425 

243 

196

6,670

129 

124 

136 

209 

1,460 

2,460 

1,870 

573 

421

8,250

Falls power-plant tallrace.

b Stage-discharge relation affected by Ice.

e Gage reading not representative of average for day; discharge computed on basis of records for 

Wallowa Falls power-plant tallraee.
QRANDE RONDE RIVER BASIN 227

Wallowa Falls power-plant tallraoe near Joseph, Oreg.

Location.- Staff gage and sharp crested weir, Lat. 45°16', long. 117°13', In SEi sec. 29,

 '!'. 3 "t5., R. 45 E., a quarter of a mile upstream from point where channel discharges 

Into West Fork of Wallowa River and 6 miles south of Joseph. Datum of gage Is 

4,624.79 feet above mean sea level, datum of 1929.

Records available.- August 1924 to September 1941. 

Average discharge.- 17 years, 7.34 second-feet.

Extremes.- Maximum discharge observed during year, 15.3 second-feet Sept. 1 (gage height, 

0.94 root); no flow at times.

1924-41: Maximum discharge, 17 second-feet Dec. 1, 8, 1930, Jan. 9, 10, 1931; no 

flow at times.

Remarks.- Records good. Flow regulated by Impulse wheel In power house. Water diverted

 at aam on East Fork of Wallowa River into a conduit 1 mile above power house, and discharged into West Fork a quarter of a mile downstream. Gage read hourly.

Cooperation.- Gage-height record furnished by Inland Power and Light Co.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

28 

29 

30 

31

Oct.

8.8 

3.8 

9.0 

8.6 

8.6

7.5 

8.8 

8.S 

8.S 

8.4

8.6 

8.0 

7.5 

8.4 

8,4

9.0 

9.0 

8.8 

8.2 

6.7

8.6 

8.6 

9.0 

9.0 

8.6

8.8 

7.4 

9.2 

9.2 

8.8 

9.0

Nov.

9.0 

9.4 

7.5 

9.2 

9.2

9.0 

9.2 

8.8 

8.8

7.2

7.9 

9.0 

9.2 

8.8 

9.0

9.2 

7.9 

9.2 

9.4 

9.6

8.0 

9.2 

9.2 

7.7 

9 2

9.4 

9.4 

9.2 

9.0 

8.8

Dec.

7.9 

9.4 

9.2 

8.8 

8.8

9.0 

9.2 

7.7 

8.4 

9.0

8.8 

9.0 

8.8 

8.8 

7.4

8.8 

8.8 

9.0 

9.0 

9.2

9.2 

8.0 

9.2 

8.6 

7.9

8.8 

8.8 

9.0 

7.4 

9.0 

8.8

Jan.

7.9 

8.8 

8.8 

8.6 

7.9

8.6 

8.6 

8,4 

8.4 

8.6

8.2 

7.5 

8.6 

S.6 

8.6

8.4 

8.4 

8.6 

7-5 

8.6

8.8 

8.6 

8.6 

8.4 

8.4

6.9 

8.6 

8.4 

8.4 

8.4 

8.2

Feb.

8.0 

7.3 

8.2 

8.2 

8.2

S.O 

8.0 

8.4 

7.5 

8.4

8.6 

8.2 

B.S 

8.0 

8.0

7.3 

8.0 

8.0 

8.0 

8.0

8.0 

8.0 

7.0 

8.0 

8.0

8.0 

8.0 

8.6

Month

Oct 

Soi 

Dec

C

Jar 

Pet 

Mai 

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

K

alendar year 194 0.. ......... ...........

ater year 1940-4

liar.

8.6 

7.3 

8.4 

8.4 

8.4

8.2 

8.0 

8.0 

6.1 

8.2

8.0 

8.2 

8.0 

8.0 

8.0

7.3 

8.0 

7.9 

7.9 

7.7

7.9 

7.9 

6.1 

8.0 

7.9

7.9 

7.9 

7.9 

8.4 

4.9 

7.9

Apr.

8.6 

8.6 

8.2 

8.4

S.4

7.5 

8.4 

8.4 

8.6 

8.6

8.4 

8.2 

7.3 

8.4 

8.4

8.6 

9.0 

8.4 

8.4 

7.7

9.2 

9.0 

9.0 

8.6 

9.0

8.8 

7.4 

9.6 

9.6 

9.4

Seeondfoot-days

264.9 

265.6 

269.7

2,818.3

259.3 

224.1 

241.9 

S56.1 

274.3 

269.3 

294.0 

305.8 

299.7

3,224.7

May

9.4 

9.4 

9.2 

6.9 

9.0

9.2 

8.8 

8.6 

8.6 

8.4

7.9 

9.4 

9.2 

9.0 

9.2

9.0 

9.0 

7.5 

9.4 

9.0

9.0 

9.0 

9.0 

9.2 

7.2

9.4 

9.6 

9.4 

9.4

8.0 

9.C

Maximum

9.2 

9.6 

9.4

9.6

8.8 

8.6 

8.6 

9.6 

9.6 

9.8 

10.4 

10.6 

11.0

11.0

June

7.5 

9.0 

9.0 

9.0 

8.8

9.2 

9.2 

7.9 

9.2 

9.2

9.4 

9.2 

9.2 

8.6 

7.5

8.8 

9.2 

9.8 

9.6 

9.8

9i4 

6.4 

9.6 

9.6 

9.4

9.4 

9.8 

9.2 

8.2 

9.2 

-

July

9.6 

9.6 

9.S 

8.2 

8.2

7.9 

10.2 

9.4 

9.6 

9.8

9.6 

9.8 

8.0 

10.4 

10.2

10.2 

10.2 

10.0 

9.4 

8.2

9.8 

9,6 

9.6 

9.8 

9.8

9.8 

7.9 

9.8 

9.8 

10.0 

9.8

Minimum

6.7 

7.2 

7.4

0

6.9 

7.0 

4.9 

7.3 

6.9 

6.4 

7.9 

7.7 

8.0

4.9

Aug.

9.8 

9 *2 

8^2 

10.2 

10.4

10.2 

10.6 

10.4 

10.4 

7.7

10.6 

10.6 

10.4 

10.4 

10.6

9.8 

7.9 

10.4 

10.4 

10. Z

10.0 

10.0 

9.8 

8.0 

10.2

10.0 

10.2 

10.2 

10.4 

10.2 

8.4

 Mean

8.55 

8.85 

S.70

7.70

8.36 

8.00 

7.80 

8.54 

8.86 

8.98 

9.48 

9.86 

9.99

8.83

Sept.

9.6 

10.8 

10.4 

10.0 

9.8

10.2 

8.1 

10.8

11.0 

10.6

10.8 

10.8 

9.6 

8.2 

10.0

10.0 

10.4 

10.6 

10.2 

9.4

8.0 

10.2 

10.4 

10.4 

10.6

10.2 

8.6 

9.6 

10.4 

10.0

Run-off in 

acre-feet

525 

527 

535

5,590

514 

444 

480 

508 

544 

534 

583 

607 

594

6,400
228 GRANDE RONDE RIVER BASIN

Hurricane Creek near Joseph, Oreg.

Location.- Water-stage recorder, lat. 45°20', long. 117°18', in NEi sec. 3, 1. 3 S., R.

 44 E., above intake of Moonshine ditch and 3i miles southwest of Joseph.

Drainage area.- 31 square miles.

Records available.- April to September 1915, April 1924 to September 1941.

Average discharge.- 14 years (1927-41), 62.9 second-feet.

Extremes.- Maximum discharge during year, 290 second-feet June 29 (gage height, 2.56

 feet): minimum, 12 second-feet Mar. 14.

1915, 1924-41: Maximum discharge, 716 second-feet May 26, 1928 (gage height, 2.65 

feet, site and datum then in use); minimum, 3.4 second-feet Feb. 10, 1938 (gage 

height, 0,91 foot).

Remarks.- Records good. No diversion above station.

Rating table, water year 1940-41 (gage height, In feet, and discharge, In second-feet) 

(Shifting-control method used Aug. 9-29)

1.2 

1.4 

1.6 

1.8

14 

2S 

50 

77

2.0 

2.2 

2.4 

2.6

227

307

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

63 

58 

56 

54 

50

45 

44 

42 

40 

39

38 

37 

37 

36 

35

34 

34 

33 

33 

32

33 

32 

32 

53 

53

46 

45 

42 

42 

40 

40

Nov.

39 

40 

38 

35 

35

36 

37 

36 

36 

35

35 

30 

29 

31 

36

35 

36 

35 

32 

33

33 

32 

30 

31 

31

30 

32 34* 

36 

34

Dec.

32 

31 

31 

31 

31

30 

30 

30 

27 

24

22 

21 

18 

19 

22

23 

26 

29 

30 

31

30 

27 

27 

26 

26

26 

26 

26 

26 

26 

25

Jan.

19 

20 

22 

23 

25

25 

25 

24 

24 

23

23 

23 

22 

22 

22

22 

22 

22 

22

21

21 

21 

20 

20 

20

19 

18 

18 

18 

18 

18

Month

Oct 

NOT 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

W

ember. ....................

ater year 1940-4

Feb.

18 

IS 

18 

18 

18

IS 

IS 

17 

17 

17

17 

17 

16 

16 

15

15 

16 

16 

16 

16

16 

16 

16

16 

16

16 

16 

19

Seeondfoot-days

1,298 

1,020 

S29

81,646

662 

468 

597 

1,161 

4,350 

5,854 

3,688 

1,469 

1,515

22,911

Mar.

22 

18 

18

17 

17

17 

17 

17 

17 

16

16 

16 

16 

15 

18

18 

19 

20 

20 

20

19 

20 

19 

19 

19

SI 

23 

24 

26 

26 

27

Maximum

63 

40 

32

305

25 

19 

27 

96 

231 

265 

192 

62 

62

265

Apr.

29 

31 

31 

30 

30

29 

28 

29 

30 

31

30 

30 

29 

30 

31

31 

31 

30 

29 

30

31 

35 

40 

45 

49

54 

62 

70 

80 

96

May

115 

102 

109 

98 

87

79 

74 

71 

71 

86

124 

199 

216 

156 

138

138 

15S 

140 

122 

120

140 

169 

202 

231 

231

210 

178 

148 

136 

146 

156

Minimum

32 

29

IS

16

18 

15 

15 

28 

71 

143 

66 

39 

44

15

June

146 

146 

156 

156 

156

169 

199 

158 

160 

150

169 

210 

254 

250 

265

242 

257 

257 

224 

183

175 

206 

216 

199 

169

148 

143 

216 

266 

210

Mean

41.9 

34.0 

26.7

59.1

21.4 

16.7 

19.3 

38.7 

140 

195 

119 

47.4 

50.5

62.8

July

192 

192 

192 

183 

175

172 

172 

153 

140

133

129 

122 

120 

120 

117

113 

111 

107 

100 

96

91 

S9 

82 

79 

76

74 

76 

73 

70 

66 

73

Per 

square 

mile

1.35 

1.10 

.86

1.91

.69 

.53 

.62 

1.25 

4.52 

6.29 

3.84 

1.53 

1.63

2.03

Aug.

62 

59 

56 

56 

55

54 

54 

53 

51 

49

49 

48 

44 

42 

42

40 

40 

39 

40 

40

39 

45 

45 

43 

44

46 

49 

45 

44 

48 

46

Sept.

44 

49 

53 

62 

60

51 

54 

53 

50 

49

48 

49 

49 

49

51

53 

53 

a53 

a52 

a52

a51 

a5l 

a50 

49 

48

48 

48 

46 

45 

45

Run-off

Inches

1.56 

1.22 

.99

25.95

.79 

.56 

.72 

1.39 

5.S2 

7.02 

4.42 

1.76 

1.82

27.47

Acre-feet

2,570 

2,020 

1,640

42,920

1,310 

928 

1,180 

2,300 

8,630 

11,610 

7,320 

2,910 

3,000

45,420

a No gage-height record; discharge computed on basis of range of stage and records for Bear Greek 

near Wallowa.
GRANDE RONDE RIVER BASIN 229

Lostine River near Lostine, Oreg.

Location.- Water-stage recorder, lat. 45°26', long. 117°26', in NWi sec. 34, T. IS., R. 

45 E., 3i miles south of Lostine and 10 miles upstream from mouth.

Records available.- August 1912 to March 1914, April to September 1915, July 1925 to 

September 1941.

Average discharge.- 14 years (1912-13, 1928-41), 170 second-feet.

Extremes.- Maximum discharge during year, 958 second-feet June 17 (gage height, 4,77 

reetj; minimum, 20 second-feet Feb. 15 (gage height, 0.61 foot).

1912-14, 1915, 1925-41: Maximum discharge, 2,540 second-feet May 27, 1913: minimum, 

10 second-feet Nov. 28-30, 1936.

Remarks.- Records good except those for periods of ice effect, which are poor. No large 

aiversions above station. Flow regulated slightly by Minam Lake Reservoir.

Rating tables, water year 1940-41, except periods of Ice effect (gage height, in feet, and

discharge, in second-feet) 

(Shifting-control method used Feb. 20 to Mar. 17}

Oct. 1 to May 13 Hay 14 to Sept. 30

O.S 31 2.6 266 1.0 4S 2.6 286 

1.0 44 3,0 362 1.2 64 3.0 3SO 

1.2 61 3.4 469 1.4 S5 3.4 490 

1.4 S3 3.S 684 1.6 110 3.S 610 

1.6 107 4.2 724 1.9 165 4.2 745 

1.9 147 4.6 SS6 2.2 206 4.6 890 

2.2 192

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

2S 

29 

30 

31

Oct.

130 

126 

136 

12S 

117

108 

101 

95 

39 

63

81 

77 

72 

68 

66

62 

58 

66 

56 

63

53 

63 

52 

76 

129

108 

108 

95 

95 

95 

93

Nov.

90 

97 

91 

SI 

79

85 

89 

87 

85 

SI

79 

72 

b63 

b69 

73

73 

75 

72 

67 

70

66 

63 

67 

5S 

56

53 

58 

64 

99 

84

Dec.

76

72 

71 

71 

73

71 

69 

68 

63 

53

b46 

b4l 

b38 

b37 

b39

b43 

46 

56 

56 

65

68 

63 

59 

58 

47

57 

61 

59 

56 

63 

61

Jan.

b33

b35 

b37 

b39 

a42

43 

43 

41 

41 

40

40 

40 

43 

44 

41

41 

41 

45 

43 

42

40 

40 

39 

39 

41

42 

3S 

3S 

36 

40 

38

Feb.

3S 

37 

36 

36 

40

36 

37 

36 

36 

37

38 

38 

36 

36 

b35

b35 

b36 

1)37 

3S 

37

38 

3S 

36 

3S 

38

36 

39 

44

Month

Oct 

Noi 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Sei

n

alendar year 19< 0................ ......

ater year 194O-4

Mar.

55 

50 

47 

45 

46

46 

46 

46 

46 

46

46 

46 

46 

46 

46

47 

62 

57 

57

58

56 

67 

67 

56 

57

60 

a64 

a69 

a76 

aSO 

a88

Apr.

a94 

alOO 

a!03 

106 

105

100 

96 

97 

102 

107

105 

100 

97 

97 

106

101 

.99 

95 

93 

91

97 

106 

126 

144 

166

1S4 

216 

248 

292 

362

Secondfoot-daya

2,716 

2,236 

1,796

56,525

1,245 

1,044 

1,693 

3,936 

15,134 

18,032 

7,391 

1,881 

3,106

60,210

May

453 

412 

418 

362 

307

264 

23S 

223 

216 

260

391 

695 

820 

616 

606

502 

589 

499 

402 

370

433 

553 

678 

816 

822

773 

644 

499 

422 

457 

496

Maximum

136 

99 

76

1,060

45 

44 

88 

362 

822 

882 

529 

82 

165

882

June

469 

469 

496 

606 

499

635 

65S 

520 

448 

454

514 

637 

836 

804 

8S2

790 

866 

836 

728 

592

538 

583 

634 

610 

496

402 

372 

502 

759 

598

July

529 

520 

517 

484 

445

405 

406 

366 

299 

271

249 

233 

216 

214 

206

197 

186 

174 

15S 

149

136

127 

120 

111 

104

9S 

104 

106 

100 

89 

85

Aug.

S2 

7S 

74 

72 

69

69 

66

64 

62 

60

59 

64 

58 

56 

54

53 

51 

50 

63 

55

52 

54 

54 

62 

54

62 

66 

58 

55 

63 

62

Sept.

56 

67 

S7 

123 

117

93 

92 

93 

84 

84

81 

86 

98 

96 

109

109 

116 

134 

166 

142

133 

124 

118 

111 

107

105 

101 

97 

95 

93

Minimum Mean ^re^U"

62 87.6 5,390 

53 74.5 4,440 

37 57.9 3,660

24 164 112,100

33 40.2 2,470 

35 37.3 2,070 

45 54.6 3,360 

91 131 7,810 

216 488 30,020 

372 601 35,770 

85 23S 14,660 

60 60.7 3,730 

56 104 6,160

33 165 119,400

a No gage-height record; discharge computed on basis of records for Hurricane Creek near Joseph 

and Bear Creek near Wallona.

b Stage-discharge relation affected by ice.
230 GRANDE ROKDE RIVER BASIN

Bear Creek near Wallowa, Oreg.

Location.- Water-stage recorder, lat. 45°32', long. 117°33', in NEi sec. 34, T. IN., R.

 42 E., at bridge 4i miles southwest of Wallowa.

Records available.- April to September 1915, April 1931 to September 1941. April 1924 to

 November 1931 at site 1 mile upstream and above intakes of two irrigation ditches with 

a combined capacity of about 3 second-feet.

Average discharge.- 12 years (1929-41), 94.2 second-feet.

Extremes.- Maximum discharge during year, 498 second-feet May 23 (gage height, 2.24 feet);

 minimum, 13 second-feet Aug. 17-19, 21-24.

1915, 1924-41: Maximum discharge, 1,620 second-feet Apr. 22, 1936 (gage height, 

3.82 feet, from floodmarks), from rating curve extended above 950 second-feet; minimum, 

3 second-feet Jan. 20, Feb. 1, 1937.

Remarks.- Records fair except those for periods Nov. 13 to Dec. 20, Dec. 31 to Jan. 23, 

which are poor. Small diversions above station for irrigation.

Rating tables, water year 1940-41, except periods of ice effect (gage height, In feat, and

discharge, in second-feet) 

(Shifting-control method used Oct. 1 to Hoy. 12)

Oct. 1 to Dee. 21 Dee. 22 to Sept. 30

0.3 

1.0 

1.2 

1.4

15.S 

31 

55 

S9

0.7 

.9

1.1 

1.3

15

29

54

90

1.5 

l.S 

2.2

142

260

470

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4

e

6

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

2S 

29 

30 

31

Oct.

41 

45 

54 

57 

52

50 

47 

45 

42 

38

36 

33 

31 

29 

27

25 

24 

22 

21 

21

23 

21 

21 

34 

46

52 

52 

48 

52 

54 

56

Nov.

56 

60 

57 

54 

54

54 

54 

51 

51 

48

47 

3S 

«b31 

b29 

b32

35 

39 

36 

33 

34

33 

29 

29 

29 

28

26 

30 

38 

75 

84

Dec.

82 

7S 

75 

75 

76

78 

75 

71 

6S 

60

64 

b42 

b30 

b31 

b34

b36 

b3S 

b42 

b45 

b46

b45 

44 

43 

44 

43

43

4S 

46 

43 

41 

U39

Jan.

b28 

b30 

b32 

a34 

a35

a35 

a35 

a33 

a33 

a32

a32

a32 

a33 

a34 

a32

a32 

a32 

a34 

a32 

a30

aS9 

a29 

a28 

*28 

29

30 

29 

29 

28 

SB 

2S

Feb.

28 

28 

28 

2S 

26

28 

28 

28 

26 

2S

27 

28 

27 

27 

27

27 

27 

27 

27 

27

27 

27 

28 

29 

29

29 

30 

3S

Month

Oot 

No\ 

Dec

C

Jai 

Fel 

Ifei 

Apj 

Ma, 

Jui ju:

AUJ 

361

1

alendar year 194 0......................

 11 .

y.. ....................................

fater year 1940-41......................

Mar.

57 

65 

67 

65 

65

62 

60 

60 

59 

59

59 

57 

56 

54 

51

51 

56 

64 

65 

65

62 

60 

59 

56 

54

54 

59 

64 

70 

84 

97

Apr.

107 

120

122 

117 

112

102 

95 

95 

95 

100

97 

92 

90 

83 

97

95 

90 

64 

80 

76

76 

SO 

92 

109 

128

139 

165 

176 

195 

269

Secondfoot-days

1,198 

1,293 

1,617

35,332.2

965 

7SS 

1,916 

3,332 

9,913 

9,833 

2,679 

490 

1,326

35,655

May

326 

300 

310 

262 

264

228 

207 

195 

191 

207

300 

404 

464 

368 

330

325 

333 

330 

296 

287

315 

360 

416 

468 

440

428 

350 

296 

264 

274 

296

Maximum

57 

34 

82

598

35 

38 

97 

269 

458 

422 

292 

22 

68

45S

June

292 

292 

292 

292 

274

287 

394 

362 

372 

366

360 

377 

422 

360 

360

335 

388 

399 

388 

372

335

320 

300 

282 

251

215 

195 

246 

410 

326

July

292 

274 

269 

233 

207

1S3 

162 

136 

117 

100

38 

78 

70 

65 

59

56 

51 

46 

43 

33

36

32 

30 

29 

27

26

23 

30 

27 

24 

23

Minimum

21 

26 

30

5.7

28 

27 

51 

76 

191 

195 

23 

13 

16

13

Aug.

22 

20 

20 

19 

19

17 

17 

16 

16 

16

16 

16 

15 

15 

14

14 

13 

13 

13 

14

13 

13 

13 

13 

14

16 

16 

14 

16 

20 

IS

Mean

38.6 

43.1 

52.2

96.5

31.1 

28.1 

61. S 

113 

320 

329 

92.9 

16. S 

44.2

97.7

Sept.

16 

IS 

25 

41 

48

40 

41 

41 

36 

34

32 

34 

43 

43

54

54 

56 

62 

63 

65

62 

59 

54

51 

50

46

43 

39 

37 

34

Run-off in 

acre-feet

2,330 

2,560 

3,210

70,080

1,9X0 

1,560 

3,800 

6,710 

19,670 

19,600 

5,710 

972 

2,630

70,710

* Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of.2 discharge measurements, gage heights* 

weather records, and records for Hurricane Creek near Joseph and Lostine River near Lostine. 

b Stage-discharge relation affected by ice.
ASOTIN CREEK BASIN 231

Asotin Creek near Asotln, Wash.

Location.- Staff gage, lat. 46°20', long. H7°12', in sec. 20, T. 10 N., R. 45 E., half a 

mile upstream from Washington Water Power Co.'s diversion for water supply and irrigation, 4 miles upstream from George Creek, and 8 miles west of Asotin.

Drainage area.- 171 square miles.

Records available.- August 1928 to September 1941. March 1904 to November 1906, August 

1910 to dctoDer 1911, at practically same site.

Average discharge.- 13 years (1928-41), 56.6 second-feet.

Extremes.- Maximutn discharge observed during year, 128 second-feet May 1 (gage height, 

1.37 reet); minimum observed, 27 second-feet Aug. 10 (gage height, 0.58 foot).

1904-6, 1910-11, 1938-41: Maximum discharge observed, 1,180 second-feet Apr. 15, 

1904 (gage height, 4.3 feet, datum then in use); minimum observed, 16 second-feet Jan. 

5, 1937.

Remarks.- Records good except those for period of Jce effect, which are poor. Large part 

or low flow diverted for Irrigation. No regulation. Gage read twice dally.

Cooperation.- Gage-height record and results of one discharge measurement furnished by 

wasmngton Water Power Co.

Rating table, water year 1940-41, except period of loe effect (gage height, In feet,

and discharge, In second-feet) 

(Shifting-control method used Oct. 1 to HOT. 30)

0.6 29 0.9 53 1.2 99 

.7 38 1.0 71 1.3 115 

.3 47 1.1 34

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

33 

32 

52 

48 

38

34 

32 

30 

30 

30

30 

30 

29 

29 

29

29 

30 

30 

29 

30

30 

30 

30 

30 

32

33 

39 

35 

35 

35 

35

Hov.

38 

39 

39 

33 

33

37 

36 

41 

39 

39

33 

34 

32 

34 

38

33 

37 

33 

37 

37

33 

37 

35 

35 

35

34 

35 

33 

51 

54

Dec.

50 

47 

50 

50 

48

51 

48 

50 

*47 

45

43 

39 

b36 

b34 

b32

b32 

b34 

b37 

39 

41

83 

77 

79 

75 

76

76 

80 

76 

72 

68 

61

Jan.

55 

47 

50 

47 

45

45 

43 

43 

43 

41

41 

39 

39 

42 

41

40 

40 

47 

47 

47

47 

47 

46 

45 

47

60 

53 

55 

54 

52 

50

Feb.

47 

47 

46 

45 

45

«44 

52 

46 

45 

45

47 

48 

45 

45 

44

42 

41 

41 

41 

41

41 

41 

40 

*41 

41

39

39 

41

Month

Dot 

Nov 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

*

alendar year 19 10. .....................

ater year 1940-4

liar.

56 

66 

71 

66 

63

58 

56 

55 

54 

54

54 

52 

47 

45 

47

45 

45 

47 

45 

46

45 

46 

43 

43 

42

43 

44 

46 

50 

56 

5S

Apr.

61 

S4 

84 

79 

76

73 

69 

66 

63 

73

73 

72 

71 

71 

69

6S 

64 

62 

60 

57

57 

56 

57 

53 

53

61 

67 

72 

75 

31

Seeondfoot-days

1,013 

1,139 

1,676

13,176

1,443 

1,220 

1.5SS 

2,042 

2,930 

2,609 

1,509 

1,012 

1,023

19,209

May

122 

122 

117 

105 

110

102 

93 

93 

34 

79

SI 

87 

102 

96 

87

84 

105 

122 

115 

107

96 

91 

87 

84 

SO

S3 

79 

77 

79 

77 

84

Maximum

52 

54 

S3

215

60 

52 

71 

84 

122 

122 

31 

33 

39

122

June

34 

S4 

81 

80 

76

76 

99 

121 

122 

112

102 

93 

87 

81 

88

79 

81 

88 

99 

91

87 

S3 

79 

76 

75

63 

64 

71 

96 

36

July

SI 

79 

79 

71 

66

63 

64 

53 

55 

54

50 

47 

46 

45 

45

45 

41 

40 

39 

33

33 

33 

37 

36 

36

36 

36 

38 

39 

37 

36

Aug.

36 

34 

35 

37 

36

35 

31 

30 

30 

29

29 

32

31 

30 

30

33 

32 

32 

30 

32

30 

30 

33 

32 

33

35 

35 

35 

34 

33 

33

Minimum Mean

29 32. S 

32 38.0 

32 54.1

17 49.7

39 46.5 

39 43.6 

42 51.2 

56 63. 1 

77 94.5 

64 87.0 

36 43. 7 

29 32-6 

31 34.1

29 52.6

Sept.

34 

39 

38 

36 

34

32 

32

33 

33 

33

36 

36 

34 

34 

36

34 

33 

36 

39 

36

35 

34 

33 

32 

32

32 

32 

32 

32 

31

Run-off in 

ao re-feet

2,020 

2,260 

3,320

36,050

2,360 

2,420 

3,150 

4,050 

5,310 

5,170 

2,990 

2,010 

2,030

38,090

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by loe.
232 CLEABWATER RIVER BASIN 

Selway River hear Lowell, Idaho

Location.- Water-stage recorder, lat. 46°05', long. 115°31', in sec. 25, T. 32 N., R. 7

 E., a quarter of a mile upstream from O'Hara Creek and 7 miles upstream from Lowell 

post office.

Drainage area.- 1,510 square miles.

Records available.- April 1911 to September.1912 (gage heights or fragmentary discharge

 only); October 1929 to September 1941.

Average discharge.- 12 years (1929-41), 3,127 second-feet.

Extremes.- Maximum discharge during year, 16,100 second-feet my 13 (gage height, 9.21

 feet)';" minimum, 257 second-feet Dec. 13 (gage height, 2.21 feet).

1929-41: Maximum discharge, 33,800 second-feet June 14, 1933 (gage height, 13.17

feet); minimum, probably less than 100 second-feet Jan. 8, 1937, during period of Ice

effect. 

Remarks.- Records excellent. No diversion.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S

4

e

6 

7 

8 

9 

10

11 

12 

13 

14ie

16 

17 

18 

19 

SO

21 

ZZ 

23 

24 

25

26 

2V 

28 

29 

30 

31

Oct.

1,380 

1,100 

1,680 

1,670 

1,430

1,240 

1,110 

1,020 

944 

889

843 

808 

817 

861 

825

768 

748 

715 

691 

674

674 

699 

691 

674 

757

852 

834 

808 

782 

800 

843

Hov.

880 

934 

992 

916 

852

808 

S70 

925 

907 

870

782 

682 

497 

517 

774

870 

889 

954 

880 

732

774 

808 

674 

574 

800

782 

757 

825 

1,720 

1,710

Dec.

1,300 

1,190 

1,190 

1,400 

1,350

1,410 

1,310 

1,220 

1,200 

1,090

925 

589 

320 

378 

740

892 

757 

1,230 

1,240 

1,150

1,030 

1,020 

' 992 

944 

916

907 

925 

925 

870 

800 

825

Jan.

748 

504 

372 

604 

1,030

880 

907 

861 

740 

791

934 

1>140 

1,240 

1,070 

944

861 

791 

880 

1,010 

992

954 

907 

870 

861 

861

916 

898 

843 

791 

723 

765

Month

Dot 

Hov 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

Water year 1940-4

Feb.

8SC 

88S 

843 

791 

76E

757 

825 

870 

861 

861

SOI 

98£ 

944 

896 

85E

800 

808 

834 

861 

898

861 

85E 

861 

88S 

916

861 

85£ 

916

Secondfoot-days

28,641 

26 ,055 

31,035

1,045,883

26 ,688 

24 ,134 

45,880 

111,180 

248,560 

155,720 

53 ,000 

23 ,605 

40,582

815,080

Mar.

1,140 

1,400 

1,410 

1,380 

1,340

1,330 

1,290 

1,300 

1,340 

1,300

1,260 

1,210 

1,170 

1,130 

1,140

1,170 

1,210 

1,380 

1,440 

1,430

1,420 

1,400 

1,440 

1,400 

1,410

1,490 

1,660 

1,880 

2,150 

2,760 

3,100

Maximum

1,680 

1,720 

1,410

18,600

1,240 

982 

3,100 

7,220 

14 ,500 

8,080 

3,010 

1,020 

1,940

14,500

Apr.

3,270 

3,640 

3,820 

3,640 

3,540

3,450 

3,180 

3,100 

3,100 

3,270

3,540 

3,360 

3,450 

3,360 

3,450

3,870 

3,180 

3,010 

2,840 

2,760

2,840 

2,920 

3,870 

3,640 

4,020

4,330 

4,980 

5,560 

6,170 

7,220

May

8,690 

9,650 

9,980 

9,650 

9,000

7,790 

6,680 

6,300 

5,800 

5,680

6,420 

9,000 

14,500 

12,900 

9,980

8,690 

6,690 

8,380 

7,220 

6,420

6,170 

6,550 

7,080 

7,940 

8,380

7,790 

7,640 

6,550 

5,800 

6,420 

6,820

Minimum

674 

497 

320

320

372 

757 

1,130 

2,760 

5,680 

3,270 

1,040 

620 

666

320

June

8,080 

7,220 

6,680 

6,680 

6,420

6,040 

6,040 

6,950 

6,300 

5,800

5,440 

5,320 

5,210 

5,440 

4,760

4,330 

4,120 

4,440 

5,560 

6,300

5,100 

4,540 

4,220 

3,980 

3,730

3,360 

3,270 

3,640 

3,540 

3,270

Mean

924 

868 

1,001

2,856

861 

862 

1,480 

3,706 

8,018 

5,191 

1,710 

761 

1,353

2,233

July

3,010 

2,840 

2,680 

2,680 

2,680

2,370 

2,440 

2,220 

2,010 

1,940

1,810 

1,770 

1,680 

1,620 

1,540

1,440 

1,420 

1,440 

1,350 

1,290

1,200 

1,140 

1,100 

1,110 

1,210

1,170 

1,160 

1,180 

1,320 

1,140 

1,040

Per 

square 

mile

0.612 

.575 

.663

1.89

,570 

.571 

.980 

2.45 

5.31 

3.44 

1.13 

.504 

.896

1.48

Aug.

1,020 

963 

907 

880 

843

817 

791 

757 

757 

774

748 

765

817;

791 

732

699 

682 

651 

635 

620

651 

682 

682 

748 

732

757 

834 

7SS 

699 

682 

707

Sept.

682 

666 

691 

843 

1,140

1,490 

1,370 

1,190 

1,140 

1,450

1,350 

1,210 

1,460 

1,500 

1,880

1,940 

1,740 

1,660 

1,630 

1,660

1,570 

1,500 

1,410 

1,330 

1,860

l.SSO 

1,460 

1,450 

1,360 

1,330

Run-off

Inches

0.71 

.64 

.76

25.73

.66 

.59 

1.13 

2.73 

6.12 

3.84 

1.30 

.58 

1.00

20.06

Aore-feet

56 ,810 

51,680 

61,560

2,073,000

52,930 

47,870 

91,000 

220,500 

493 ,000 

308,900 

105,100 

46,820 

80,490

1,617,000
CLEARWATER RIVER BASIN 233

Clearwater River at Kamiah, Idaho

Location'.- Water-stage recorder, lat. 46°14', long. 116°01', in sec. 1, T. 33 N., R. 3 E.,

 300 feet upstream from highway bridge at Kamiah and 6 miles downstream from South Fork 

of Clearwater River.

Drainage area.- 4,850 square miles.

Records available.- August 1910 to September 1941.

Average discharge.- 31 years, 7,910 second-feet.

Extremes.- Maximum discharge during year, 28,900 second-feet May 13 (gage height, 10.86

 feet); minimum, 523 second-feet Dec. 14 (gage height, 2.57 feet).

1910-41: Maximum discharge observed, 81,400 second-feet June 10, 1933 (gage height, 

16.53 feet), from rating curve extended above 70,000 second-feet; minimum discharge, 

probably less than 200 second-feet Jan. 8, 1937, during period of ice effect.

Remarks.- Records excellent. Practically no diversion or regulation above station. 

Cooperation.- Gage-height record collected In cooperation with U. S. Weather Bureau.

Rating tables, water year 1940-41 (gage height, In feet, and discharge, In aecond-fe«t) 

Oct. 1 to Dee. 15 Dee, 16 to Sept. 30

2.7 646

3.0 960

3.5 1,580

4.0 2,310

4.6 3,310

5.2 4,640

2.9 860 4.6 3,240 7.5 11,780

3.2 1,196 5.0 4,250 8.6 16,800

3.6 1,590 6.6 5,390 9,6 20,660

4.0 2,350 6.6 8,280 10.6 26,410

Discharge, In eeeond-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4

6

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26

27 

28 

29 

30 

31

Oct.

2,710 

2,280 

3,490 

4,090 

3,130

2,630 

2,200 

1,930 

1,820 

1,690

1,690 

1,520 

1,490 

1,620 

1,640

1,640 

1,460 

1,410 

1,360 

1,310

1,320 

1,400 

1,400 

1,360 

1,480

1,820 

1,630 

1,830 

1,760 

1,720 

1,780

Nov.

1,960 

2,120 

2,660 

2,390 

2,070

1,860 

1,850 

2,120 

2,120 

2,070

1,830 

1,660 

1,310 

1,170 

1,320

1,660 

1,720 

1,940 

2,000 

1,720

1,610 

1,680 

1,580 

1,460 

1,580

1,720 

1,690 

1,800 

3,600 

4,640

Dec.

3,400 

2,790 

8,790 

3,220 

3,310

3,400 

3,220 

2,830 

2,830 

2,630

2,310 

1,710 

1,030 

666 

646

1,640 

1,220 

2,110 

2,440 

2,440

2,350 

2,360 

2,330 

2,250 

2,170

2,160 

2,130 

2,220 

2,060 

1,910 

1,880

Jan.

1,740 

1,300 

916 

1,020 

1,820

1,320 

1,900 

1,860 

1,670 

1,620

1,420 

1,370 

1,480 

1,860 

1,970

1,780 

1,730 

2,190 

2,600 

2,600

2,440 

2,290 

2,170 

2,110 

2,090

2,170 

2,160 

2,030 

1,880 

1,730 

1,700

Month

Dot

Nov 

Dee

C

Jan 

Peb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

Water year 1940-41. ........

Feb.

1,820 

1,900 

1,880 

1,780 

1,690

1,630 

1,720 

1,780 

1,790 

1,820

1,910 

2,240 

2,210 

2,060 

1,920

1,790 

1,730 

1,740 

1,790 

1,840

1,850 

1,820 

1,850 

2,020 

2,140

2,060 

1,960 

2,270

Secondfoot-daya

58,660 

68,740 

70,440

2,191,523

57,336 

53 ,010 

102,900 

233 ,750 

479,600 

361,650 

116,460 

50,530 

67,490

1,735,456

Mar.

2,620 

3,240 

3,430 

3,430 

3,240

3,240 

3,060 

3,060 

3,140 

3,050

2,960 

2,780 

2,600 

2,620 

2,620

2,600 

2,690 

2,960 

3,240 

3,240

3,140 

3,140 

3,340 

3,240 

3,140

3,240 

3,630 

4,040 

4,470 

6,520 

6,600

Maximum

4,090 

4,540 

3,400

35,000

2,600 

2,270 

6,600 

13,300 

24,600 

16 ,600 

7,160 

2,140 

4,690

24,600

Apr.

6,340 

7,640 

8,610 

6,120 

7,300

7,800 

7,180 

6,740 

6,600 

7,030

8,610 

8,610 

8,120 

7,960 

7,960

7,640 

7,180 

6,840 

6,450 

6,170

6,170 

6,310 

6,740 

7,480 

8,120

3,610 

9,620 

10,700 

11 ,800 

13 ,300

May

15,800 

18,100 

13,600 

18,100 

17,600

15 ,300 

13,700 

12,900 

12,200 

11 ,400

12,200 

16,600 

24,400 

24,600 

19,100

16,700 

16,200 

17,200 

14,600 

13,300

12,500 

12,500 

13,300 

14,600 

16,200

15,400 

14,600 

13,700 

12,200 

12,600 

14,100

Minimum

1,310 

1,170 

645

645

916 

1,630 

2,520 

6,170 

11,400 

7,330 

2,220 

1,300 

1,490

646

June

17,200 

16,200 

14 ,500 

14 ,100 

13,700

12,900 

14,100 

16,600 

16,200 

14,100

12,900 

12,200 

11,400 

12,200 

10,700

9,970 

9,620 

10,700 

12,900 

16,200

12,600 

11,000 

9,970 

8,940 

8,610

7,800 

7,330 

8,280 

8,610 

S,120

Mean

1,892 

1,968 

2,272

5,968

1,850 

1,693 

3,319 

7,968 

15,470 

12,050 

3,757 

1,630 

2,916

4,766

July

7,130 

6,740 

6,310 

6,040 

5,770

5,270 

5,160 

5,150 

4,580 

4,250

3,940 

3,330 

3,630 

3,530 

3,340

3,050 

2,960 

2,960 

2,870 

2,7SO

2,600 

2,440 

2,300 

2,220 

2,320

2,520 

2,440 

2,620 

2,780 

2,690 

2,300

Per 

square 

mile

0.390 

.404 

.466

1.23

.381 

.390 

.684 

1.64 

3.19 

2.48 

.776 

.336 

.601

.980

Aug.

2,140 

2,030 

1,920 

1,840 

1,780

1,700 

1,660 

1,580 

1,550 

1,560

1,580 

1,660 

1,670 

1,700 

1,580

1,490 

1,440 

1,400 

1,330 

1,300

1,310 

1,440 

1,440 

1,600 

1,650

1,580 

1,340 

2,000 

1,730 

1,650 

1,690

Sept.

1,590 

1,490 

1,610 

1,660 

2,170

3,140 

3,140 

2,690 

2,350 

2,780

2,870 

2,520 

2,870 

3,340 

3,830

4,690 

3,940 

3,630 

3,730 

3,730

3,530

3,340 

3,140 

2,870 

2,690

2,600 

2,870 

3,140 

2,870 

2,780

Run-off

Inches

0.45 

.45 

.64

16.81

.44 

.41 

.79 

1.83 

2.68 

2.77 

.89 

.39 

.67

13.31

Acre-feet

116,300 

116,600 

139,700

4,347,000

113,700 

105,100 

204,100 

473,600 

961,300 

717,100 

231,000 

100,200 

173,500

3,442,000
234 CLEARWATER RIVER BASIN

Clearwater River at Spalding, Idaho

Location.- Water-stage recorder, lat. 46°25', long. 116°51', in lot 22, sec. 22, T. 36 

N., R. 4 W., a quarter of a mile downstream from Lapwai Creek and three-eighths of 

a mile northwest of Spalding post office.

Drainage area.- 9,570 square miles.

Records available.- March 1926 to September 1941.

Average discharge.- 15 years, 13,850 second-feet.

Extremes.- Maximum discharge during year, 39,700 second-feet May 13 (gage height, 10.94

 feet); minimum, 1,430 'second-feet Dec. 16 (gage height, 2.08 feet).

1926-41: Maximum discharge, 172,000 second-feet Dec. 23, 1933 (gage height, 23.19 

feet), from rating curve extended above 100,000 second-feet by logarithmic plotting; 

minimum, probably less than 500 second-feet Jan. 9, 1937, during period of Ice effect.

Maximum stage known, 25.6 feet Jan. 5, 192S (site and datum then In use), during 

severe ice Jam.

Remarks.- Records excellent except those for period of no gage height record or those

 based on staff-gage readings, which are good. Small diversions from lower tributaries; no regulation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

SO 

31

Oct.

4,700 

4,590 

06,000 

09,000 

6,980

5,410 

4,370 

3,820 

3,510 

3,210

3,020 

2,920 

3,020 

3,020

3,110

3,020 

2,820 

2,640 

2,550 

2,460

2,460 

2,550 

2,640 

2,640 

2,730

3,620 

3,930 

3,960 

3,760 

3,760 

3,960

Hov.

4,390 

4,S40 

5,660 

5,420 

4,610

4,070 

3,760 

4,390 

5,060 

4,840

4,S80 

3,660 

3,130 

2,460 

2,550

2,990 

3,270 

3,560 

3,960 

3,620

3,210 

3,210 

3,310 

2,920 

2,920

3,210 

3,410 

3,720 

10,200 

15,400

Dec.

10,400 

7,710 

7,260 

7,560 

3,670

3,670 

S,340 

7,260 

6,840 

6,570

5,780 

4,590 

3,020 

2,010 

1,670

1,660 

3,210 

3,820 

5,660 

6,440

8,340 

8,670 

8,670 

8,340 

9,010

9,360 

11,200 

11,200 

9,010 

7,710 

6,700

Jan.

6,040 

4,940 

3,720 

3,310 

3,820

5,530 

5,170 

5,050 

4,590 

4,150

3,820 

3,620 

3,620 

4,150 

4,S20

4.7OO 

4,480 

5,910 

10,100 

10,100

9,010 

S,020 

7,560 

6,980 

7,710

10,100 

9,720 

8,340 

7,410 

6.57Q 

6,170

Month

Got 

Hov 

Dec

C

Jan 

Pet 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

W

enter. ....................

ater year 1940-4

Pel).

5,910 

6,300 

6,300 

5,910 

5,410

5,170 

5,170 

5,290 

5,290 

5,530

6,570 

7,260 

7,120 

6,570 

6,040

5,660 

5,290 

5,170 

5,050 

5,050

5,170 

5,050 

5,050 

5,890 

5,780

5,660 

5,410 

5,660

Secondfoot-daya

116,180 

132,080 

215,350

4,296,590

189,230 

159,130 

261,690 

446,300 

769,800 

578,500 

197,800 

92,890 

152,950

3,311,900

Mar.

6,980 

10,100 

12,000 

11,200 

10,400

10,100 

9,360 

9,010 

9,010 

8,670

8,340 

7,710 

7,120 

6,570 

6,420

6,550 

6,420 

6,S20 

7,780 

7,500

7,500 

7,360 

7,500 

7,500 

7,36(J

7,500 

7,780 

8,660 

9,270 

10,400 

12,800

Maximum

9,OOC 

15,40C 

11.20C

53,500

10.10C 

7,260 

12,800 

20,900 

37,400 

28,800 

12,000 

3.93C 

9,010

37,400

Apr.

13,200 

14,100 

15,900 

16,400 

15,400

15,900 

14,500 

13,200 

12,800 

13,200

16,400 

17,800 

16,800 

16,400< 

15,400

15,400 

14,100 

13,600 

12,400 

12,000

11,600 

11,600 

12,000 

13,200 

14,100

15,000 

15,900 

18,300 

18,800 

20,900

May

23,700 

26,800 

28,200 

28,200 

28,800

28,200 

23,700 

22,000 

21,400 

19,800

20,400 

23,200 

31,600 

37,400 

30,200

26,200 

27,500 

30,900 

26,800 

23,700

22,000 

20,900 

21,400 

22,000 

23,700

23,700 

22,600 

22,000 

19,800 

19,800 

23,200

Minimum

2,460 

2,460 

1,660

1,500

3,310 

5,050 

6,420 

11,600 

19,800 

12,000 

3,930 

2,370 

2,920

1,660

June

25,600 

28,800 

24,300 

23,700 

22,600

21,400 

21,400 

26,800 

23,200 

23,700

20,900 

19,300 

17,800 

17,800 

17,300

15,300 

15,400 

16,200 

18,500 

24,600

20,900 

17,800 

15,900 

14,500 

13,600

12,800 

12,000 

12,800 

14,500 

13,600

Mean

3,748 

4,403 

6,947

11,740

6,140 

5,683 

S,442 

14,880 

24,830 

19,280 

6,381 

2,996 

5,098

9,074

July

12,000 

11,200 

10,400 

10,100 

9,360

9,010 

8,340 

8,340 

7,710 

7,120

6,840 

6,440 

6,300 

6,040 

5,660

5,410 

5,170 

5,050 

5,050 

4,940

4,700 

4,370 

4,150 

4,040 

3,930

4,040 

4,260 

4,150 

4,370 

4,940 

4,370

Per 

square 

mile

0.392 

.460 

.726

1.23

.638 

.594 

.882 

1.55 

2.59 

2.01 

.667 

.313 

.533

.948

Aug.

3,930 

3,720 

3,620 

3,410 

3,310

3,210 

3,110 

2,920 

2,920 

2,820

2,920 

2,920 

2,920 

3,110 

3,110

2,820 

2,730 

2,730 

2,550 

2,460

2,370 

2,460 

2,640 

2,640 

2,920

2,730 

2,920 

3,510 

3,620 

3,020 

2,820

Sept.

3,110 

3,020 

2,920 

3,020 

3,310

4,940 

5,530 

5,050 

4,370 

4,260

5,050 

4,700 

4,940 

6,700 

6,570

9,010 

7,710 

6,570 

6,040 

6,300

6,040 

5,660 

5,290 

4,940 

4,700

4,480 

4,370 

4,940 

4,820 

4,590

Run-Off

Inches

0.45

.51 

.84

16.69

.74 

.62 

1.02 

1.73 

2.99 

2.24 

.77 

.36 

.59

12.86

Aore-feet

230,400 

262,000 

427,100

8,522,000

375,300 

315,600 

519,100 

885,200 

1,527,000 

1,147,000 

392,300 

184,200 

303,400

6,569,000

e fragmentary gage-neigirG recora; aiscnarge computed on oasis or partial recora ana records ro 

other atationa In the basin.

Mote.- Discharge Oct. 28 to Nov. 19, Mar. 15-29, June 16-20 computed from ataff-gage readings 

at Spalding bridge, 2,300 feet upstream from recorder.
CLEAHWATER RIVER BASIN 235

Lochsa River near Lowell, Idaho

Location.- Water-stage recorder, lat. 46°09', long. 115°35', in SWiSEi sec. 33, T. 33 

N., R. 7 E., three-quarters of a mile upstream from Lowell post office, seven-eighths 

of a mile upstream from mouth, and 1£ miles downstream from Pete King Creek.

Drainage area._- 1,180 square mile's.

Records available.- November 1910 to August 1912 (gage-height record only), October 1989 

to September 1941.

Average discharge.- 12 years (1929-41) 2,395 second-feet.

Extremes.- Maximum discharge during year, 9,850 second-feet May 13 (gage height, 6.88 

reet); minimum, 317 second-feet Dec. 14 (gage height, 1.33 feet).

1929-41: Maximum discharge, 34,800 second-feet June 10, 1933 (gage height, 13.44 

feet), from rating curve extended above 25,000 second-feet; minimum, probably less 

than 100 second-feet Jan. 8, 1937, during period of ice effect.

Remarks.- Records excellent. No diversion.

Rating table, water year 1940-41 (gage height, In feet, and discharge, in second-feet) 

(shifting-control method used May 13 to Sept. 30)

1.3 

1.5 

1.8 

2.1

301

415

625

880

2.4 

2.7 

3.0 

3.4

1,180

1,520

1,900

2,450

4.2 

5.0 

5.S

3,750

5,350

7,240

9,310

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

8 

S

4 

6

6

1 

S 

9 

10

11 

12 

13 

14ie

16

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

28 

29 

30 

31

Oct.

730 

641 

1,060 

1,000 

S26

689 

595 

536 

501 

474

454 

441 

454 

487 

430

460 

441 

422 

409 

403

428 

448 

422 

422 

588

602 

610 

595 

572 

588 

673

NOV.

764 

817 

817 

697 

625

572 

657 

739 

722 

673

565 

467 

397 

409 

487

529 

529 

602 

588 

494

494 

508 

448 

474 

508

529 

522 

602 

1,640 

1,360

Dee.

995 

928 

966 

1,360 

1,820

1,270 

1,130 

1,020 

995 

899

722 

543 

391 

339 

416

595 

625 

808 

S99 

817

853 

844 

826 

817 

799

782 

844 

817 

756 

697 

714

Jan.

602 

501 

4S7 

625 

730

739 

714 

657 

625 

588

565 

558 

595 

665 

657

610 

595 

756 

S62 

817

773 

730 

697 

689 

689

764 

730 

689 

649 

625 

618

Month

Oet 

NOT 

Dee

C

Sea 

Pet 

Mai 

Apr 

Kaj 

Jun 

Jul 

Aof 

Sep

VI

uat........ ...............

ater year 1940-4 1. ..... . .

Peb.

61S 

657 

641 

610 

595

588 

595 

60S 

633 

649

681 

730 

697 

649 

610

595 

572 

602 

618 

610

618 

618 

641 

705 

714

649 

649 705

Secondfoot-days

17,451 

19,235 

25,686

797,437

20,601 

17,851 

37,298 

82,130 

164,070 

104,610 

36,769 

16,815 

34,673

577,189

Mar.

956 

1,150 

1,190 

1,160 

1,130

1,110 

1,080 

1,080 

1,130 

1,090

1,040 

985 

928 

880 

908

956 

985 

1,120 

1,160 

1,160

1,150 

1,150 

1,190 

1,150 

1,160

1,210 

1,340 

1,510 

1,700 

2,170 

2,380

Maximum

1,060 

1,640 

1,360

12,400

862 

730 

2,380 

4,710 

8,770 

6,160 

2,170 

714 

1,960

8,770

Apr.

2,520 

2,830 

2,910 

2,750 

2,830

2,680 

2,450 

2,380 

2,380 

2,450

2,680 

2,600 

2,680 

2,600 

2,600

2,520 

2,380 

2,240 

2,170 

2,100

2,100 

2,170 

2,380 

2,680 

2,910

3,070 

3,400 

3,840 

4,120 

4,710

Hay

5,800 

6,270 

6,390. 

6,030 

6,030

5,130 

4,410 

4,310 

3,930 

3,840

4,310 

5,680 

S.770 

7,990 

6,270

5,680 

6,030 

6,030 

5,020 

4,510

4,310 

4,410 

4,610 

4,920 

5,680

5,240 

4,920 

4,410 

4,020 

4,410 

4,710

Minimum

403 

397 

339

249

487 

572 

880 

2,100 

3,840 

2,030 

714 

434 

494

339

June

6,150 

5,570 

4,920 

4,920 

4,820

4,410 

4,310 

4,610 

4,310 

3,840

3,570 

3,400 

3,230 

3,400 

2,990

2,830 

2,750 

3,070 

3,320 

3,660

3,150 

2,750 

2,450 

2,310 

2,240

2,100 

2,030 

2,600 

2,520 

2,3SO

Mean

563 

641 

829

2,179

665 

638 

1,203 

2,738 

5,293 

3,487 

1,186 

542 

1,156

1,581

July

2,170 

2,030 

1,960 

1,820 

1,680

1,570 

1,680 

1,640 

1,420 

1,360

1,270 

1,210 

1,170 

1,120 

1,060

995 

956 

956 

918 

871

826 

782 

739 

714 

756

862 

790 

826 

946 

S99 

773

Per 

square 

mile

0.477 

.543 

.703

1.85

.564 

.541 

1.02 

2.32 

4.49 

2.96 

1.01 

.459 

.980

1.34

Aug.

714 

681 

649 

618 

595

572 

550 

529 

529 

536.

522

543 

565 

5.50 

515

515 

508 

474 

441 

434

467 

467 

474 

515 

494

4SO 

633 

665 

543 

508 

529

Sept.

515 

494 

508 

641 

1,000

1,280 

1,120 

918 

862 

1,020

937 

908 

1,360 

1,400 

1,960

1,960 

1,630 

1,510 

1,590 

1,470

1,380 

1,270 

1,180 

1,110 

1,040

1,020 

1,200 

1,2OO 

1,110 

1,080

Run-off

Inches

0.55 

.61 

.81

25.14

.65 

.56 

1.18 

2.59 

5.18 

3.30 

1.16 

.53 

1.09

18.21

Acre-feet

34,610 

38,150 

50,950

1,582,000

40,860 

35,410 

73,980 

162,900 

325,400 

207,500 

72,930 

33,350 

68,770

1,145,000

481877 0-42-16
236 CLEARWATER RIVER BASIN

South Fork of Clear-water River near Grangeville, Idaho

Location.- Staff gage, lat. 45°55', long. 116°01', in SEiNWi sec. 30, T. 30 N. R. 4 E., 

Just downstream from power house of Washington Water Power Co.,,6 miles southeast 

of Grangeville.

Drainage area.- 865 square miles.

Records available.- November 1910 to September 1916, April 1923 to September 1941.

Average discharge.- 22 years (1912-16, 1923-41), 787 second-feet.

Extremes.- Maximum discharge observed during year, 3,910 second-feet June 8 (gage height, 

7.30 reet); minimum daily discharge, 125 second-feet Dec. 13.

1910-16, 1923-41: Maximum discharge observed, 9,830 second-feet May 30, 1912 

(gage height, 9.7 feet), from rating curve extended above 6,500 second-feet; practically no flow for parts of Aug. 24, 26, 1935.

Remarks.- Records good except those for periods of ice effect or missing or non-representative gage heights, which are fair. Diurnal fluctuations caused by power plant 

Just above station. No diversion for irrigation. Gage read twice daily.

Cooperation.- Gage-height record furnished by Washington Water Power Co. in connection 

with a p'ederal Power Commission project.

Rating table, water year 1940-41, except periods of ice effect (gage height, 

in feet, and discharge, in second-feet)

2.7 118 3.3 307 4.1 706 5.3 1,600 6.5 2,840 

2.9 169 3.5 394 4.5 960 5.7 1,970 6.9 3,350 

3.1 232 3.8 541 4.9 1,260 6.1 2,380 7.2 3,770

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

41S 

307 

796 

d765 

516

380 

307 

268 

236 

212

206 

190 

193 

246 

222

202 

190 

178 

169 

166

172 

206 

209 

187 

196

276 

272 

257 

236 

229 

232

Hov.

236 

272 

345 

324 

257

257 

257 

257 

288 

264

219 

209 

193 

b200 

b220

232 

257 

280 

254 

222

236 

232 

202 

212 

232

236 

222 

225 

303 

541

Dec.

418 

362 

349 

385 

394

441 

394 

358 

394 

311

232 

169 

*b!25 

b!75 

b250

b275 

b300 

b350 

b350 

b350

b340 

b330 

320 

291 

a288

284 

276 

254 

239 

212 

229

Jan.

219 

169 

b!50 

b200 

254

315 

324 

261 

232 

225

225 

225 

232 

246 

219

199 

193 

225 

232 

246

254 

222 

206 

193 

212

212 

193 

187 

166 

164 

164

Month

Oot 

HOT 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

Water year 1940-4

Feb.

193 

193 

172 

190 

164

178 

193 

181 

181 

187

190 

219 

199 

193 

147

158 

169 

169 

193 

199

187 

193 

199 

212 

212

196 

193 

239

Seeondfoot-daya

8,639 

7,684 

9,445

226,185

6,764 

5,299 

14,637 

31,932 

47,500 

63,910 

20,069 

7,548 

10,993

234,420

Mar.

341 

490 

490 

466 

441

441 

41S 

41S 

466 

41S

394 

341 

394 

291 

324

367 

376 

490 

490 

490

441 

441 

466 

441 

441

490 

541 

594 

649 

827 

960

Maximum

796 

541 

441

2,720

324 

239 

960 

1,340 

1,970 

3,770 

1,260 

394 

466

3,770

Apr.

960 

1,100 

1,340 

1,180 

1,100

1,100 

1,030 

926 

860 

1,030

1,180 

1,260 

1,100 

1,180 

1,1SO

1,100 

1,030 

1,030 

926 

926

926 

892 

926 

1,030 

1,030

1,030 

1,100 

1,100 

1,180 

1,180

May

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1

1 

1 

1

1

1 

1

1 

1

1 

1 

1 

1 

1 

1

Minimum

166 

193 

125

76

150 

147 

291 

860 

1,260 

1,340 

332 

150 

236

125

,340 

,690 

,600 

,690 

,690

,600 

,420 

,420 

,420 

,260

,340 

,510 

,970 

,690 

,510

,340 

,510 

,600 

,510 

,420

,420 

,420 

,420 

,420 

,780

,510 

,690 

,600 

,510 

,510 

,690

June

2,170 

1,880 

1,7SO 

1,690 

1,7SO

1,600 

2,270 

3,770 

3,220 

2,720

2,270 

2,270 

2,070 

2,490 

2,070

1,880 

1,SSO 

2,070 

2,490 

3,220

2,600 

a2,340 

2,070 

1,880 

1,780

1,690 

1,510 

1,600 

1,510 

1,340

Mean

279 

256 

305

61S

218 

189 

472 

1,064 

1,532 

2,130 

647 

243 

366

642

July

1,260 

1,180 

1,180 

1,180 

al.100

al,010 

926 

892 

796 

736

706 

a660 

a614 

568 

541

490 

490 

466 

a450 

a434

418 

390 

372 

349 

332

a400 

a400 

394 

568 

418 

349

Per 

square 

mile

0.323 

.296 

.353

.714

.252 

.218 

.546 

1.23 

1.77 

2.46 

.748 

.281 

.423

.742

Aug.

332 

a316 

a300 

284 

261

243 

229 

212 

a201 

alS9

178 

199 

272 

229 

187

a!77 

a!68 

158 

d!50 

d!50

d!75 

d200 

d250 

a300 

288

257 

394 

354 

324 

299 

a272

Sept.

246 

246 

236 

276 

341

372 

a376 

380 

341 

418

418 

345 

a369 

a394 

418

466 

441 

367 

466 

a466

a466 

466 

441 

345 

332

307 

a314 

a321 

328 

291

Run-off

Inches

0.37 

.33 

.41

9.74

.29 

.23 

.63 

1.37 

2.04 

2.74 

.86 

.32 

.47

10.06

Aore-feet

17,140 

15,240 

18,730

448,700

13,420 

10,510 

29,030 

63,340 

94,210 

126,800 

39,810 

14,970 

21,800

465,000

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge interpolated or computed on basis of records for nearby stations.

b Gage height not representive of mean for the day; discharge interpolated or computed on basis 

of records for nearby stations.
CLEAHWATER RIVER BASIN 

North Fork of Clear-water River near Ahsahka, Idaho

237

Location.- Water-stage recorder, lat. 46°31', long. 116°18', In SEi sec. 26, T. 37 N., 

R. IE., at Bruce's Eddy, 1$ miles northeast of Ahsahka and 2 miles upstream from 

mouth.

Drainage area.- 2,440 square miles.

Records available.- August 1926 to September 1941.

Average discharge.- 15 years, 5,277 second-feet.

Extremes.- Maximum discharge during year, 12,200 second-feet May 18 (gage height, 10.98 

reet); minimum discharge recorded, 882 second-feet Dec. 14 (gage height, 2.35 feet) 

but may have been less Dec. 15 or 16 during period of no gage-height record.

1926-41: Maximum discharge, 100,000 second-feet Dec. 23, 1933 (gage height, 35.5 

feet, from floodmarks), from rating curve extended above 24,000 second-feet by logarithmic plotting; minimum, probably less than 250 second-feet Jan. 8, 1937, during period 

of Ice effect.

Remarks.- Records excellent except those for periods of no gage-height record, which 

are fair. No diversions or regulation above station.

Rating table, water year 1940-41 (gage height, in feet, and discharge, In

second-feet) 

(Shifting-control method used Oct. 1 to NOT. 29)

2.6 966 4.0 2,080 6.0 4,430 S.6 7,970 

2.8 1,160 4.4 2,480 6.6 6,080 9.0 8,770 

3.1 1,350 4.8 2,920 7.0 6,730 9.6 9,600 

3.4 1,670 6.2 3,400 7.6 6,480 10.0 10,460 

3.7 1,810 6.6 3,910 S.O 7,210 10.6 11,360

Discharge, In second-feet, water year October 1940 to September 1941

D*y

1 

2 

3

4 

6

6

7

a

9 

10

11

12 

13 

14 

16

16 

17 

18 

19

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

1,670 

1,490 

2,220 

3,100 

2,080

1,670 

1,320 

1,180 

1,120 

1,080

1,060 

1,220 

1,250 

1,220 

1,180

1,080 

1,060 

1,020 

996 

966

966 

1,020 

1,060 

1,060 

1,360

1,610 

1,670 

1,670 

1,420 

1,650 

1,860

Nov.

2,080 

2,080 

2,180 

1,900 

1,610

1,490 

1,460 

2,080 

2,080 

1,S10

1,610 

1,420 

al,250 

1,080 

1,150

1,280 

1,260 

1,420 

1,490 

1,320

1,180 

1,220 

1,220 

1,080 

1.180

1,260 

1,280 

1,380 

3,760 

6,640

Dee.

3,620 

2,700 

2,760 

3,100 

3,280

3,660 

3,400 

2,860 

2,760 

2,540

2,180 

1,670 

1,120 

. 995

ial.OOO

2,480

4,300 

4,300 

4,040 

3,910 

4,040

4,300 

6,220 

6,080 

4,170 

3,620 

3,100

Jan.

2,760 

2,130 

1,660 

1,730 

2,080

2,330 

2,280 

2, ISO 

1,940 

1,810

1,690 

1,610 

1,650 

1,940 

1,990

2,080 

1,990 

2,380 

3,520 

3,620

3,160 

2,920 

2,700 

2,640 

2,310

4,040 

4,170 

3,660 

3,280 

2,920 

2,700

Feb.

2,700 

2,640 

2,590 

2,430 

2,230

2,180 

2,230 

2,280 

2,280 

2,380

2,860 

2,980 

2, -920 

2,700 

2,640

2,380 

2,230 

2,280 

2,230 

2,230

2,230 

2, ISO 

2,180 

2,330 

2,430

2,330 

2,180 

2,380

 .. SecondMQnth foot-days

Dot 

HOT 

Dee

C

Jan

Peb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

w

42,916 

61,230 

89,896

e.......... ...............

ater year 1940-4]

78,260 

67,630 

121,100 

173,220 

266,200 

L 76, 060 

66,680 

38,900 

56,820

325,890

Mar.

3,280 

4,950 

6,640 

5,220 

4,950

4,690 

4,430 

4,300 

4,300 

4,170

3,910 

3,650 

3,400 

3,100 

3,040

3,040 

2,980 

3,280 

3,520 

3,400

3,280 

3,280 

3,280 

3,280 

3,160

3,400 

3,660 

4,040 

4,300 

4,820 

6,360

Maximum

3,100 

6,640 

6,220

16,400

4,170 

2,980 

5,640 

7,610 

11,200 

9,770 

3,620 

1,420 

3,660

11,200

Apr.

6,640 

6,200 

6,620 

6,480 

6,340

6,340 

6,780 

5,360 

5,360 

6,360

6,060 

6,200 

6,060 

6,060 

6,780

6,640 

6,220 

4,960 

4,690 

4,660

4,560 

4,690 

4,960 

6,220 

5,640

5,780 

6,200 

6,910 

7,060 

7,610

May

3,770 

9,940 

9,430 

9,090 

10,400

10,300 

8,610 

8,130 

7,810 

7,360

7,360 

8,130 

9,600 

10,400 

9,260

8,460 

9,940 

11,200 

9,430 

8,450

7,810 

7,660 

7,610 

7,660 

7,810

7,610 

7,510 

7,210 

6,620 

6,910 

8,930

Minimum

966 

1,080

1,610 

2,180 

2,980 

4,560 

6,620 

3,620 

1,490 

1,080 

1,250

June

9,600 

9,770 

8,770 

8,290 

7,810

7,360 

7,060 

7,660 

7,360 

6,480

6,060 

5,780 

6,600 

5,500 

5,220

4,950 

4,950 

5,080 

5,600 

5,780

6,080 

4,660 

4,170 

3,910 

3,910

3,780 

3,520 

4,170 

4,660 

3,910

Mean

1,384 

1,708 

2,900

4,401

2,624 

2,415 

3,906 

5,774 

8,655 

5,868 

2,119 

1,265 

1,861

3,359

July

3,520 

3,400 

3,280 

3,040 

2,860

2,700 

2,690 

2,640 

2,380 

2,280

2,230 

2,180 

2,080 

2,040 

1,940

1,9OO 

1,810 

1,770 

1,770 

1,690

1,650 

1,570 

1,530 

1,530 

1,490

1,530 

1,570 

1,570 

1,810 

1,860 

1,570

Per 

square 

mile

0.667 

.700 

1.19

1.80

1.03 

.990 

1.60 

2.37 

3.51 

2.40 

.868 

.514 

.763

1.38

Aug.

1,380 

1,420 

1,380 

1,360 

1,320

1,280 

1,260 

1,220 

1,220 

1,260

1,250 

1,220 

1,280 

1,360 

1,280

1,220 

1,260 

1,160 

1,120 

1,120

1,080 

1,120 

1,150 

1,250 

1,260

1,150 

1,260 

1,530 

1,380 

1,180 

1,220

Sept.

1,320 

1,250 

1,250 

1,460 

1,990

1,860 

1,900 

1,650 

1,420 

1,690

1,770 

1,610 

2,430 

2,860 

3,040

3,650 

2,590 

2,130 

1,990 

2,080

1,860 

1,770 

1,650 

1,570 

1,530

1,490 

1,530 

1,570 

1,490 

1,420

Run-off

Inches Acre-feet

'0.65 85,120 

.78 101,600 

1.37 178,300

24.55 3,195,000

1.19 156,200 

1.03 134,100 

1.84 240,200 

2.64 343,600 

4,05 526,000 

2,68 349,200 

1.00 130,300 

.59 77,160 

.85 110,700

18.67 2,431,000

a Ho gage-height record; discharge Interpolated or computed on basis of records for Clearwater 

River at Kamiah and Spalding.
238 CLEARWATER RIVER BASIN

Mission Creek near Winchester, Idaho

Location.- Water-stage recorder, lat. 46°11', long. 116°39', In NEi sec. 24, T. 33 N., 

ft. 3 w., about 4 miles southwest of Winchester.

Records available.- December 1940 to September 1941.

Extremes.- Maximum discharge during period, 128 second-feet Feb. 27 (gage height, 2.79

 feet), from rating curve extended above 25 second-feet; minimum not determined, 

probably occurred during periods of Ice effect.

Remarks.- Records good except those for Dec. 11 to Feb. 26, which are poor. No diversion 

or regulation.

Cooperation.- Records collected In cooperation with Bureau of Reclamation which organlza-

 tion also furnished results of 10 discharge measurements.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

31

Oct. Nov. Dec.

' (»)

' bl.O 

(»)

. bs.o

Jan.

> 

> bl.O

j 

\

' b2.0

/

Feb.

' (») 

 bl.5

' b2.5

> b6.0

^ 22

45

Month

Oct 

Hov 

Dec

C

Jar 

Pet 

Mai 

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

n

ember 11 

alendar

-31 ....---------------

year

rhe peri

Mar.

34 

24 

16 

12 

10

9.8 

9.4 

9.8 

8.5 

7.9

7.5 

b5.5 

b5.5 

»b5.0 

»b5.0

5.6 

6.3 

6.9 

6.3 

5.9

5.6 

6.6 

7.2 

5.9 

5.6

6.3 

6.6 

6.6 

8.2 

17 

11

Apr.

9.4 

22 

16 

1!» 

13

11

9.8 

3.9 

8.9 

18

24 

18 

16 

13 

IS

11 

11 

9.4 

S.2

7.5

6.9 

6.3 

5.9 

5.9 

5.6

5.1 

6.3 

4.9 

4.4 

4.2

Secondfoot -days

45.0

-

42.0 

143.0 

287.5 

314.6 

241.4 

708 

179.9 

28. 8 

25.1

"

May

6.6 

5.9 

7.2 

6.6 

12

7.9 

7.2 

12 

7.5 

6.3

5.3 

5.3 

7.2 

5.6 

4.9

5.1 

9.4 

7.5 

5.6 

5.1

4.6 

4.2 

3.8 

3.8 

4.2

4.0 

7.2 

5.9 

S.5 

27 

28

Maximum

.

-

45 

34 

24 

28 

67 

17 

2.0 

1.8

~

June

27 

20 

22

17 

15

14 

37 

49 

28

21

18 

16 

18 

14

19

17 

29 

27 

54 

29

22 

18 

16 

14 

13

12 

11 

22 

67 

22

July

17 

16 

15 

16 

12

9.8 

9.4 

7.9 

6.9 

6.3

5.6 

5.1 

4.6 

4.2 

3.8

3.5 

3.1 

3.0 

3.0 

4.4

2.7 

2.4 

2.3 

2.1 

1.8

1.7 

2.0 

3.1 

2.3

1.6 

1.5

Minimum

_

-

5.0 

4.2 

3.8 

11 

1.5 

.5 

.6

-

Aug.

1.4 

1.2 

1.2 

1.1

1.1

.9 

.8 

.8 

.8 

.8

.8 

1.1 

1.0 

.8 

.7

.7 

.6 

.6 

.6 

.6

.6 

.5 

.6 

.7 

.8

1.3 

1.5 

1.2 

1.0 

2.0 

1.0

Mean

2.14

-

1.35 

5.11 

9.27 

10.5 

7.79 

23.6 

5. SO 

.93 

.84

~

Sept.

0.8 

.8 

.8 

.8 

.9

.9 

.6 

.6 

.6 

.6

.6 

.8

.e

.8

1.5

1.0 

.7 

1.0 

1.8 

1.3

1.0 

.8 

.8 

.7 

.6

.7 

.8 

.7 

.6

.7

Run- off In 

acre-feet

89

-

83 

284 

570 

624 

479 

1,4OO 

357 

57 

50

3,990

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
PALOUSE RIVER BASIN 239

South Pork of Palouse River at Pullman, Wash.

Location.- Water-stage recorder and 6-foot Clppolettl weir In low overflow dam, lat. 46°

 43"50", long. 117°11'00", in NEi sec. 6, T. 14 N., R. 45 E., at State Street crossing 

In Pullman, 600 feet upstream from Missouri Plat Creek.

Drainage area.- 132 square miles.

Records available.- February 1934 to September 1941.

Extremes.- Maximum discharge during year, 785 second-feet Jan. 18 (gage height, 3.99 

reet); minimum, 1.0 second-foot Aug. 3, but may have been less during period of faulty 

gage-height record, Aug. 4 to Sept. 12.

1934-41: Maximum discharge, 968 second-feet Mar. 21, 1939 (gage height, 4.01 feet); 

minimum, 0.23 second-foot Oct. 26, 1938.

Remarks.- Records good except those for period of faulty gage-height record, which are

 p"66'r. No large diversions. Slight'regulation caused by pondage at Robinson Park Dam 

In headwaters and by Moscow sewage-disposal plant on Paradise Creek.

Rating tables, water year 1940-41 (gage height, in feet, and discharge, 

in second-feet)

Oct. 1-3

0.96 1.8

1.00 2.1

1.05 2,4

1.10 2.8

0.6 

.7 

.8 

.9

1.0

Oct. 3 to Sept. 30

1.2 1.2

2.3 1.4

3.7 1.6

5.4 1.8

7.4 2.0

12 2.2

17 2.5

27 2-S

48 3.1

79 3.4

123

203

298

406

623

Discharge, in aeeond-feat, water year October 1940 to Septenber 1941

Day

1 

8 

3 

4 

6

6 

7 

8 

9 

10

11 

18 

IS 

14 

16

16 

17 

18 

19 

BO

21

22 

83 

24 

86

26 

27 

28 

89 

30 

31

Oct.

2.6 

l.S 

11 

15 

9.1

4.2 

2.5 

1.8 

1.7 

1.5

1.5 

l.S 

1.7 

1.6 

1.5

1.6 

1.5 

1.5 

1.4 

1.4

1.7 

1.7 

1.6 

3.0 

4.0

2.7 

7.9 

6.2 

4.8 

7.0 

7.6

Nov.

8.2 

6-S 

5.2 

3.9 

3.9

4.4 

4.7 

7.2 

11 

all

a9 

a7 

a6 

a6

a4

3.2 

3.9 

3.9 

3.5 

3.4

3.5

3.1 

3.1 

3.4 

4.4

5-6 

11 

75 

269

se

Dee.

49 

37 

26 

23 

a21

a!9 

a!7 

14 

11 

S.S

7.2 

S.S 

4.7 

4.2 

3.9

3.5 

3.5

5.2 

12 

221

240 

83 

95 

111 

242

166 

349 

150 

106 

72 

59

Jan.

32 

30 

22 

20 

19

20' 

22 

24 

24 

27

34 

36 

36 

101 

99

74 

77 

473 

498 

249

180 

142 

140 

166 

246

248 

142 

118 

93 

83 

77

Month

Dot 

HOT

Dec

c

Jan 

Fob 

Mar 

Apr

£7

Jun

Jul 

Aug 

Sep

M

oh. . ... ... .......... ..

tember. ...................

ater year 1940-4

Feb.

79 

112 

74 

66 

55

57 

70 

55 

60 

100

115 

98 

59 

56 

50

55 

42 

42 

43 

39

37 

34 

33 

56 

68

52 

42 

69

Secondfoot-days

114.7 

585.3 

2,169.5

10,027.67

3,552

1,717 

1,113 

1,254.7 

S32.3 

556.1 

132.9 

34.0 

48.6

12,115.1

Mar.

104 

120 

79 

93 

59

49 

45 

43 

32 

31

31 

25 

22 

22 

22

20 

19 

19 

19 

18

16 

25 

58 

27 

22

20

18 

16 

15 

14 

15

Maxlimm

15 

269 

349

380

498 

US 

120 

306 

155 

100 

17

2.8

49S

Apr.

15 

63 

SI 

49 

33

23

20 

18 

IS 

103

306 

93 

65 

48 

38

32 

31

28 

24 

22

20 

18

17 

16 

14

14 

14 

12 

10 

9.7

Itey

13 

16 

14 

15 

47

23 

15 

IS 

15 

11

9.1 

8.2 

16

Og

13

11 

156 

101 

36 

26

21 

17 

15 

13 

11

13 

IS 

20 

24 

45 

51

Minimum

1.4 

3.1 

3.5

.39

19 

33 

14 

9.7 

S.2 

4.2 

1.2

-

June

28 

16 

13 

10 

6.8

13 

37 

61 

27 

IS

14 

11 

9.5 

S.6 

14

11 

11 

IS 

16

17

10 

7.S 

6.4 

5.2 

5.1

4.5

4.2 

11 

100 

40

Mean

3.70 

19.6 

70.0

27.4

115 

61.3 

36.1 

41. S 

26. S 

IS. 5 

4.29 

1.10 

1.62

33.2

July

1711

9.1

e.o

7.0

5.6 

4.7 

4.4 

3.4 

3,1

3.1 

3.2 

3.4 

3.5 

3.4

3.1 

3.1 

3.2 

3.2

3.4

3.4 

2.S 

2.7 

2.7 

2.7

2.7 

2.7 

2.7 

2.0 

1.4 

1.2

Per 

square 

mile

0.028 

.148 

.530

.208

.871 

.464 

.273 

.317 

.203 

.140 

.032 

.0083 

.012

.252

Au«.

1.1 

1.1 

1.0

el.l

Sept.

 1.6

2.3 

1.6 

1.8

1.7 

1.5 

2.0 

2.8 

2.0

1.9 

1.7 

1.6 

1.4 

1.4

1.3 

1.3 

1.4 

1.4 

1.6

Run-off

Inches Aore-feet

0.032 228 

.166 1,160 

.611 4,300

2.825 19,890

1.00 7,050 

.484 3,410 

.315 2,220 

.354 2,490 

.234 1,650 

.157 1,100 

.037 264 

.010 67 

.014 96

3.413 24,040
240 MISCELLANEOUS DISCHARGE MEASUREMENTS

In addition to the records of stream flow obtained at gaging stations in the Snake 

River Basin and reported in the preceding pages, measurements of flow were made at other 

points, as shown in the following table:

Miscellaneous discharge measurements in Snake River Basin during water year 

October 1940 to September 1941

Mud Lake Basin, Idaho

Dajte

Hay , 16

Stream

Bearer Greek. ....

Tributary 

diverting

to or 

fromMud Lake. ...........

Locality

Sec. 14, T. 12 N., R. 36 E., 400 

feet below railroad crossing and 

1.2 miles north of Spencer.

Discharge 

(sec. -ft.)

57.7

Tributaries between Portneuf River and Salmon Falls Greek, Idaho

Mar. 26

Springs.

mouth, 4 miles north of Twin Falls, 

Idaho.

600 feet below' Idaho Power Co. 

flume, 0.8 mile above mouth, and 7 

miles southwest of Wendell.

0.3 mile above mouth, 7& miles 

southwest of Wendell.

Big Wood River Basin, Idaho

Oct. 12

Sept. 26

Oct. 8 

12

Aug. 20

Oct. 12 

12

Oct. S 

July 15

July 15

July 15

Oct. 12 

July 15

Broadford Slough.

....do...........

Rockwell bypass 

canal. 

....do...........

....do....... ....

.,.. do ........... 

....do...........

Rockwell bypass 

canal wasteway.

Diversion No. 34.

Diversion No. 

34-A.

Diversion No. 

34-B.

Diversion No. 36. 

....do...........

Big Wood River......

Broadford Slough. . . . 

....do..............

....do..............

....do.............. 

....do..............

....do..............

Rockwell bypass 

canal.

....do..............

....do..............

....do.... ..........

Broadford 3 lough. . . .

Sec. 26, T. 2 N. , R. IS B., 100 feet 

below diversion No. 36, 1& miles 

northwest of Bellevue.

Sec. 22. T. 2 N.. R. 18 B. , at head, 

2 miles southeast of Ealley. 

....do...............................

. . . .do. .............................. 

....do...............................

Sec. 22, T. 2 N., R. 18 E. , 50 feet 

below wasteway and 2.1 miles southeast of Ealley. 

Sec. 26, T. 2 N., R. 18 B. , at outlet, 

ik miles northwest of Bellevue.

Sec. 22, T. 2 N., R. 18 E., about 800 

feet below canal heading and 2.1 

miles southeast of Ealley. 

Sec. 22, T. 2 N., R. 18 E., 200 feet 

below wasteway and 2.1 miles southeast of Halley.

Sec. 22, T. 2 N., R. 16 B., at headgate, 2.6 miles southeast of Halley

Sec. 27, T. 2 N., R. IS E., at headgate, 2 miles northwest of Bellevue

Sec. S6, T. 2 N., R. 18 E., at headgate, li miles northwest of Bellevue.

3.72

3 ft*

3.64 

10.7

15.6 

15.0

5.58 

*.02

0

2.50 

4.41

0 

t.03

t.02

3.21 

0

*.02 

1.20

.30

* Estimated.

t Float measurement.

Tributaries between Big Wood and Owyhee Rivers, Idaho

Nov. 2 

29

20

Aug. 27

Ake lateral No. 2

....do...........

Mountain Home feeder 

canal.

....do.. ............

Sec. 36, T. S S., R. 6 B. , at head, 5 

miles north of Mountain Home.

....do...............................

*.40

1.19

* Estimated.
MISCELLANEOUS DISCHARGE MEASUREMENTS 241

Miscellaneous discharge measurements In Snake River Basin during water year 

October 1940 to September 1941 -Continued 

Malheur River Basin, Oreg.

Date

May 21

14

July 22 

Feb. 23

Apr. 9

Hay 22

Stream

Malheur River.....

....do............

....do............

Lake Creek. ....... 

Warmsprlngs Creek.

....do............

Tributary to or 

diverting fromSnake River. .......

....do.............

Malheur River. ..... 

Agency Valley Reservoir, North Pork 

of Malheur River. 

....do.............

....do.............

Locality

Sec. 8, T. 19 S., R. 34 E., above 

Branon Ranch, near Drews ey.

Sec. 4, T. 20 S., R. 34 E.. .........

above Drews ey Reclamation Co. 's 

ditch. 

Sec. 9, T. 16 S., R. 33* E.. ........ 

SEi sec. 1, T. 19 S.. R. 37 E., at 

road crossing above Agency Valley 

Reservoir, near Beulah. 

....do..............................

....do..............................

Discharge 

(sec. -ft.)

184

26.3

28.3

418

6.7 

24.6

65.4

4.32

Welser River Basin, Idaho

Apr. 24 

Hay 24

July 27

Apr. 11

May 21 

June 23

July 26 

Aug. 30 

Hay 9

June 7

24

July 26

Sept. 1 

Apr. 8

Hay 19

July 24

July 24

Apr. 17 

Hay 17

July 17

Apr. 15

Hay 17 

June 18 

July 18

Aug. 28

Welser River. .....

....do............

North Fork of 

Hornet Creek.

....do............

....do............

Johnson Creek. ....

....do. ...........

Creek. 

....do............

Camp Creek. .......

....do............

South Fork of 

Crane Creek.

....do............

....do............

....do.. .......... 

....do............ 

....do. ...........

....do............

Snake River. .......

....do.............

Hornet Creek. ...... 

....do.............

....do...... ....... 

Welser River. ......

....do.............

....do.............

....do............. 

Fine Creek. ........

River. 

....do.............

Crane Creek. ....... 

....do.............

....do.............

....do............. 

....do....... ......

....do.............

Sec. 2, T. 19 N. , R. 1 W.. below 

Price Valley damslte, 3* miles 

northwest of Tamarack. 

....do..............................

... .do. .............................

Sec. 14, T. 17 N., R. 2 W., i mile 

above mouth and 5* miles west of 

Frultvale. 

. . . .do. ............................. 

.... do.................... ..........

... .do. .............................

SEi sec. 36, T. 17 N., ft. 3 W., 

above mouth of Johnson Park Creek, 

10 miles northwest of Council. 

....do..... .........................

SEi sec. 36, T. 17 N., R. 3 W., at

mouth, 10 miles northwest of 

Council. 

. . . .do. .............................

... .do. .............................

Sec. 32, T. 15 N., R. 3 W., at Raney 

Ranch near Horse Flat damslte, 2? 

miles northwest of Cambridge.

Sec. 25, T. 15 N., R. 1 W., at Cole

Ranch, 3 miles southeast of Mesa. 

. . . .do. .............................

... .do. .............................

Sec. 3, T. 11 N., R. 2 W. , at bridge 

near South Crane school, 14 miles 

southeast of Hldvale.

at bridge on farm road 200 feet 

west of U. S. Highway 95, 6 miles 

north of Welser. 

... .do. ............................. 

... .do. .............................

66.1 

17.7

7.98 

5.75

68.7

3.88 

5.97

.24 

28.4

39.2

1.62

.73

2.97 

«.05

10.4

10.0

.46 

.25

1.82

1.17 

*.2

0

1.69 

1.07

».30

* Estimated.

Salmon River Basin, Idaho

Jan. 26

Apr. 11

May 24

Salmon River......

Garden Creek. .....

Johnson Creek

diversion.

Snake River.. ......

Salmon River. ......

Johnson Creek. .....

See. 22, T. 11 N., R. 14 E., 3.5

miles above Yankee Fork of Salmon

River and 6 miles east of Stanley. 

Sec. 32, T. 14 H., R. 19 E., 100

feet above 4th Street bridge In

Challls.

Sec. 13, T. 14 N., R. 7 E., at diversion point of Johnson Creek-Deadwood River tranamountaln diversion.

8 miles south of Landmark ranger

station, and 10 miles southeast of

Knox.

340

2.57

 10 O Ofc. y
242 MISCELLANEOUS DISCHARGE MEASUREMENTS

Ittscellaneous discharge measurements In Snake River Basin during water year 

October 1940 to September 1941 Continued

 Salmon River Basin, Idaho Continued

Date

July 1

Oct. 24

Sept. 2

Stream

Johnson Creek 

diversion.

Hi or dan Creek. .....

....do.............

Tributary to or 

diverting fromJohnson Creek. .....

....do.............

River.

....do. ............

Locality

See. 13, T. 14 H., R. 7 E., at diversion point of Johnson Creek-Deadwood River transmountaln diversion, 

8 miles south of Landmark ranger 

station, and 10 miles southeast of 

Knox.

Sec. 9, T. 18 H. , R. 8 E., at highway bridge, li miles south of 

Johnson Creek ranger station, 4 

miles south of Yellow Pine, Idaho

upstream from Little Kid Creek and 

3i miles northeast of Tamarack.

....do..............................

Discharge 

(see. -ft.)

6.62

9.33

1.8

t%n

9.2

2.2

Clearwater River Basin, Idaho

Mar. 15

July 31

Sept. 5

Lapwai Creek. ......

....do.............

Clearwater River...

....do.............

Sec. 14, T. 35 H., R. 4 W., 100 

feet below county road bridge, 

1,000 feet below Sweetwater Creek, 

at Sweetwater.

500 feet above mouth, 4 miles 

southwest of Sweetwater.

....do..............................

38.7

1.90
INDEX

Page

Accuracy of field data and computed

results......................... 3-4

Acre-foot, definition of.............. 1

Agencies other than Geological Surrey,

records collected by............ 9

Agency Valley Reservoir, Oreg., contents of........................ 155

Ahsahka, Idaho, North Fork of Clearwater River near................ 257

Ake lateral No. 2, Idaho, discharge

measurements of................. 240

Alturas Lake Creek near Obsidian,

Idaho........................... 209

American Falls Reservoir at American

Falls, Idaho.................... 19-20

Argora, Idaho, Medicine Lodge Creek

near............................ 64,65

Arrowrock, Idaho, Arrowrock Reservoir

at.............................. 131

Boise River near.................... 132

Grouse Creek near................... 15S

Moore Creek near.................... 142

Arrowrock Reservoir, Idaho, Cottonwood

Creek at........................ 136

Arrowrock Reservoir at Arrowrock,

Idaho........................... 151

Ashton, Idaho, Henrys Fork near....... 44

Asotln Creek near Asotln, Wash........ 231

Asotln Creek Basin, Wash., gaglngstatlon record In............... 251

Banks, Idaho, South Fork of Payette

River near...................... 160

Bannock Creek near Idaho City, Idaho.145-146 

Barber, Idaho, New York canal near.... 149

Bear Creek near Wallowa, Oreg......... 230

Bear Valley Creek near Cape Horn,

Idaho........................... 215

Beaver Creek at Camas, Idaho.......... 65

at Dubols, Idaho.................... 62

at Spencer, Idaho................... 61

discharge measurements of........... 240

Bedford, Wyo., Strawberry Creek near.. 59 

Bellevue, Idaho, Big Wood River near.. 97 

Bennett Creek near Bennett, Idaho..... 118

Bennett, Idaho, Bennett Creek near.... 118

Little Camas canal near............. 139

Beulah, Oreg., North Fork of Malheur

River at........................ 157

North Fork of Malheur River near.... 156

Big Lost River at Howell Ranch, near

Chilly, Idaho................... 69

below Maokay Reservoir, near Maokay,

Idaho........................... 74

east channel of, above Maekay Reservoir, near Maekay, Idaho........ 70

west channel of, above Maekay Reservoir, near Maekay, Idaho........ 71-72

Big Lost River Basin, Idaho, gaglngstatlon records In.............. 69-77

Big Wood River at Oooding, Idaho...... 100

at Halley, Idaho.}.................. 95-96

below Magic Dam, near Richfield,

Idaho........................... 99

near Bellevue, Idaho................ 97

near Gooding, Idaho................. 101

Big Wood River Basin, Idaho, discharge

measurements In................. 240

gaglng-statlon records In...........96-114

Big Wood Slough at Hailey, Idaho...... 105

Birch Creek near Downey, Idaho........ 80

Blaokfoot, Idaho, Blaokfoot River near 57 

Snake River near.................... 18

Blaokfoot River near Blaokfoot, Idaho. 57 

Blaekfoot River Basin, Idaho, gaglngatatlon record In............... 57

Blalne, Idaho, Camas Creek near....... 104

Blalne County Investment Co.'s canal

near Howe, Idaho................ 6B

Bliss, Idaho, Clover Creek near....... 115

Page 

Blue Lakes outlet, Idaho, discharge

measurements of.................. 240

Boise, Idaho, Boise Elver at........... 133

Cottonwood Gulch at.................. 160

Boise River at Boise, Idaho............ 133

at Cowling Ranch, near Arrowrock,

Idaho............................ 132

at Notua, Idaho...................... 134

diversions from...................... 135

near Twin Springs, Idaho............. 130

South Fork of, near Lenoz, Idaho..... 137

Boise River Basin, Idaho, gaglng-statlon records In.................130-151

Boulder Creek near Tamarack, Idaho..... 222

Box Canyon Springs, Idaho, discharge

measurements of.................. 240

Broadford Slough, Idaho, discharge

measurements of.................. 240

Bruneau, Idaho, Jacks Creek near....... 122

Wickahoney Creek near................ 121

Burnt River near Hereford, Oreg........ 199

Burnt River Basin, Oreg., gaglng-statlon records In.................198-199

Caldwell, Idaho, Deer Flat Reservoir

near.............................. 151

Camas, Idaho, Beaver Creek at.......... 63

Camas Creek at....................... 60

Camas Creek (Ibid Lake Basin) at Camas,

Idaho............................ 60

at Elghteenmlle Shearing Corral, near

Kllgore, Idaho................... 59

Camas Creek (Big Wood River Basin) near

Blalne, Idaho.................... 104

Cambridge, Idaho, Pine Creek near...... 191

Rush Creek at........................ 190

Welser River near.................... 180

Camp Creek, Idaho, discharge measurements of......................... 241

Cape Horn, Idaho, Bear Valley Creek

near............................. 215

Middle Fork of Salmon River near..... 214

Carey, Idaho, Little Wood River

near........................108,109-110

Cascade, Idaho, North Fork of Payette

River at......................... 170

Catherine Creek near Union, Oreg....... 225

Challls, Idaho, Salmon River near...... 206

Chester, Idaho, Fall River near........ 53

Chilly, Idaho, Big Lost River near..... 69

Clarkston, Wash., Snake River

near.......................55-54, pi.1,0

Clayton, Idaho, Salmon River near...... SOS

Yankee Fork of Salmon River near..... 211

Clear Creek at Lowman, Idaho........... 164

Clear-water River at Kamlah, Idaho...... 253

at Spalding, Idaho................... 234

North Fork of, near Ahsahka, Idaho... 257 

South Fork of, near Qrangevllle,

Idaho............................ 236

Clearwater River Basin, Idaho, discharge measurements In........... 242

[-station records In...........232-258

115 

5-4 

1 

10

Clover Creek near Bliss, Idaho.........

Computations, accuracy of, results of.. 

Control, definition of.................

Cooperation, record of.................

Cottonwood Creek (Boise River Basin) at

Arrowrook Reservoir, Idaho...........

Cottonwood Creek (Salt River Basin)

near Smoot, Wyo..................

Cottonwood Gulch at Boise, Idaho.......

Council, Idaho, East Fork of Welaer

River near.......................

Hornet Creek near....................

Johnson Creek near...................

Welser River near....................

Crane Creek at mouth, near Welser,

Idaho............................

near Midvale, Idaho..................

58

150

182

186

189

179

195

194

243
244 INDEX

Crane Creek, Idaho, South Fork of,

discharge measurements of.....

Crane Creek Reservoir near Mldvale, 

Idaho.........................

Page 

241 

193

3-4 

1-3

165

166

167

151

80

62

152

Data, accuracy of......................

explanation of.......................

Deadwood Reservoir near Lowman, Idaho..

Deadwood River below Deadwood Reservoir,

near Lowman, Idaho...............

near Lowman, Idaho...................

Deer Plat Reservoir near Caldwell,

Idaho............................

Downey, Idaho, Birch Creek near........

Dubols, Idaho, Beaver Greek at.........

Drewsey, Oreg., Malheur River near.....

Elk Creek above Sold Hill Placer diversion near Idaho City, Idaho...... 148

Emmett, Idaho, Payette River near...... 162

Pall River, diversions from, above 

gaging station near Squirrel, 

Idaho............................ 50

between Squirrel and Chester gaging

stations, Idaho.................. 52

near Chester, Idaho.................. 53

near Squirrel, Idaho................. 51

Flat Creek near Jackson, Wyo........... 35

Flat Creek Basin, Wyo., gaging-station

records In....................... 35

Floods, special reports on............. 9

Frultvale, Idaho, West Fork of Welser

River near....................... 183

Garden Creek, Idaho, discharge measurements of......................... 241

Harden Valley, Idaho, South Fork of

Payette River near............... 159

Qardena, Idaho, Porter Creek near...... 176

Olenns Ferry, Idaho, Little Canyon

Creek near....................... 117

Gold Creek, Nev., Owyhee River near.... 124 

Wild Horse Reservoir near............ 123

Sold Hill Placer diversion from Moore

Creek, near Idaho City, Idaho.... 143

Qoodlng canal at Mllner, Idaho......... 88

Qoodlng, Idaho, Big Wood River at...... 100

Big Wood River near.................. 101

Thorn Creek spillway near............ 107

Qoose Creek above Trapper Creek, near

Oakley, Idaho.................... 83

Grassy Lake, Idaho, contents of........ 49

Grays Creek ditch, Idaho, discharge

measurements of.................. 241

Brays Creek, Idaho, discharge measurements of......................... 241

Orande Ronde River at La Orande, Oreg.. 223 

at Rondowa, Oreg..................... 224

Qrande Ronde River Basin, Oreg., gaglngstatlon records In..............223-230

Orangevllle, Idaho, South Fork of Clearwater River near................. 236

Granite Creek near Idaho City, Idaho... 144

Grouse Creek near Arrowrock, Idaho..... 138

Hagerman, Idaho, King Hill canal near.. 114 

Snake River near..................... 27,28

Halley, Idaho, Big Wood River at....... 95-96

Big Wood Slough at................... 103

Helse, Idaho, Snake River near......... 14

Henrys Fork at St. Anthony, Idaho...... 46

at Warm River, Idaho................. 43

diversions from, between Ashton- and 

St. Anthony gaging stations. 

Idaho............................ 45

between St. Anthony and Rexburg

gaging stations, Idaho........... 47

near Ashton, Idaho................... 44

near Island Park, Idaho.............. 42

near Lake, Idaho..................... 40

near Rexburg, Idaho.................. 48

Henrys Fork Basin, Idaho, gaglng-statlon records In.................. 56

smaller reservoirs In................ 49

Henrys Lake, Idaho, contents of........ 49

Hereford, Oreg., Burnt River near...... 199

Hornet Creek near Council, Idaho....... 186

North Fork of, discharge measurements

of............................... 241

Hope, Oreg., Malheur River near.........

Horseshoe Bend, Idaho, Payette River

near..............................

Howe, Idaho, Blalne County Investment

Co. 'a canal near..................

Little Lost River near................

Hurricane Creek near Joseph, Oreg.......

Page 

154

68

67

228

Idaho City, Idaho, Bannock Creek near..145-146 

Elk Creek near........................ 148

Gold Hill Placer diversion near....... 143

Granite Creek near.................... 144

Moore Creek near..................... 140,141

Pine Creek near......................146-147

Imnaha River at Inmaha, Oreg............ 202

Imnaha River Basin, Oreg., gaglngstatlon record In................. 202

Indian Valley, Idaho, Little Welser

River near........................

Irwln, Idaho, Snake River near..........

Island Park, Idaho, Henrys Fork near.... 

Island Park Reservoir near............

Island Park Reservoir near Island Park, 

Idaho.............................

Jacks Creek near Bruneau, Idaho.........

Jackson, Wyo., Flat Creek near..........

Jackson Lake at Moran, Wyo.;............

Johnson Creek (Salmon River Basin) at

Yellow Pine, Idaho................

diversion from, discharge measurement 

of.................................

Johnson Creek (Welser River Basin) below

Johnson Park, near Council, Idaho,.

discharge measurements of.............

Johnson Park Creek, Idaho, discharge

measurements of...................

Joseph, Oreg., East Fork of Wallowa

River near........................

Hurricane Creek near..................

Wallowa Falls power-plant tallrace

near..............................

192

13

42

41

122

35

11

221

241

189

241

228

227

Kamlah, Idaho, Clearwater River at...... 233

Ketehum, Idaho, Warm Springs Creek at... 102 

Kllgore, Idaho, Camas Creek near........ 59

Klmberly, Idaho, Snake River near....... 25

King Hill, Idaho, King Hill Creek near.. 116 

Snake River at.....................29, pi.1,A

Knox, Idaho, South Fork of Salmon River

near.............................. 216

King Hill canal near Hagerman, Idaho.... 114

King Hill Oreek near King Hill, Idaho... 116

La Qrande, Oreg., Qrande Ronde River at. 223 

Lake, Idaho, Henrys Fork near........... 40

Lake Creek, Idaho, discharge measurements

of................................ 241

Lake Fork. See Payette River, Lake

Fork of.

Lake Fork Reservoir near McCall, Idaho.. 173 

Lake Irrigation District canal near

McCall, Idaho..................... 175

Lake Walcott near lULnidoka, Idaho....... 22

Lapwal Creek, Idaho, discharge measurements of.......................... 242

Lardo, Idaho, North Fork of Payette

River at.......................... 169

Payette Lake at....................... 168

Lemhl River at Salmon, Idaho............ 213

Lenox, Idaho, South Fork of Boise River

near.............................. 137

Lincoln canal near Richfield, Idaho..... 105

near Shoshone, Idaho.................. 106

Little Camas canal at heading,near

Bennett, Idaho.................... 139

Little Canyon Creek near Qlenns Ferry,

Idaho............................. 117

Little Lost River near Howe, Idaho...... 67

Little Lost River Basin, Idaho, gagingstatIon records in................ 67-68

Little Welser River near Indian Valley,

Idaho............................. 192

Little Wood River at Campbell Ranch,

near Carey, Idaho................. 108

at Shoshone, Idaho.................... 112

near Carey, Idaho....................109-110

near Richfield, Idaho................. Ill

Lochsa River near Lowell, Idaho......... 235

Lost Creek near Tamarack, Idaho......... 185
INDEX 245

Page 

Lost Valley Reservoir near Tamarack,

Idaho............................. 184

Loatine Hirer near Lostlne, Oreg........ 229

Lowell, Idaho, Locbaa River near........ 235

Selvay Hirer near..................... 232

Lowman, Idaho, Clear Creek at........... 164

Deadwood Reservoir near............... 165

Deadwood Hirer near..................166,167

South Fork of Payette Hirer at........ 168

ItcCall, Idaho, Lake Fork of Payette

Hirer near.......................172,174

Lake Fork Ffeservolr near.............. 173

Lake Irrigation District canal near... 175 

Mackay, Idaho, Big Lost Hirer near....70-72,74

Mackay Reservoir near.................. 73

Sharp ditch near...................... 77

Warm Spring Creek near................ 75,76

Kackay Reservoir near Hackay, Idaho..... 73

Magic Reservoir near Richfield, Idaho... 98 

Malheur Hirer below Warmsprings Reservoir, near Riverside, Oreg........ 153

discharge measurements of............. 241

near Drewsey, Oreg.................... 152

near Hope, Oreg....................... 154

North Fork of, above Agency Valley

Reservoir, near Beulah, Oreg...... 156

at Beulah, Oreg..................... 157

Malheur Hirer Basin, Oreg., discharge

measurements in................... 241

gaglng-station records in............152-157

reservoirs In......................... 155

Mann Creek near Weiser, Idaho........... 197

Hay, Idaho, Pahsimeroi Hirer near....... 212

Medicine Lodge Creek at Ellis Ranch,

near Argora, Idaho................ 65

near Argora, Idaho.................... 64

near Small, Idaho..................... 66

Mesa, Idaho, Mesa Orchards canal near... 188 

Kiddle Fork of Weiser River near...... 187

Mesa Orchards canal near Mesa, Idaho.... 188

Mldvale, Idaho, Crane Creek near........ 194

Crane Creek Reserroir near............ 193

Hllner, Idaho, flooding canal at......... 88

llllner low-lift canal near............ 87

North Side Twin Falls canal at........ 89

P. A. lateral near.................... 86

Snake Hirer at........................ 24

South Side Twin Falls canal at........ 90

llllner low-lift canal near Hllner,

Idaho............................. 87

Mlnldoka, Idaho, Lake Walcott near...... 22

North Side Mlnidoka canal near........ 81

Snake River near...................... 23

South Side Mlnidoka canal near........ 82

Mission Creek near Winchester, Idaho.... 238

Honroe Creek, Idaho, discharge measurements of.......................... 241

Koran, Wyo., Jackson Lake at............ 11

Snake River at........................ 12

 Moore Creek above Qranlte Creek, near

Idaho City, Idaho................. 140

above Thorn Creek, near Idaho City,

Idaho............................. 141

Qold Hill Placer diversion from....... 143

near Arrowrock, Idaho................. 142

Mountain City, Nev., Owyhee River at.... 125

Mountain Home, Idaho, Mountain Home

cooperative canal near............ 120

Mountain Home feeder canal near....... 119

Mountain Home cooperative canal near

Mountain Home, Idaho.............. 120

Mountain Home feeder canal near Mountain

Home, Idaho....................... 119

Hud Creek, Idaho, discharge measurements

of................................ 242

Hud Lake near Terreton, Idaho........... 58

Hud Lake Basin, Idaho, discharge measurements in.......................... 240

gaglng-station records In............. 58-66

Murphy, Idaho, Snake River near......30,pi.1,B

Neelejr, Idaho, Snake River at........... 21

New York canal near Barber, Idaho....... 149

North Side Mlnidoka canal near Mlnidoka,

Idaho............................. 81

North Side Twin Falls canal at Mllner,

Idaho............................. 89

Notus, Idaho, Boise Elver at........

Hyssa, Oreg., Owyhee Reservoir -near.

134

128

Oakley, Idaho, Goose Creek near......... 89

Oakley Reservoir near................. 84

Trapper Creek near......'.............. 85

Oakley Reservoir near Oakley, Idaho..... 84

Obsidian, Idaho, Alturas xAke Creek

near.............................. 209

Salmon River near..................... 20S

Owyhee, Nev., Owyhee River near......... 126

Owyhee Dam, Oreg., Owyhee River below... 129 

Owyhee Reservoir, Oreg., Owyhee River

above............................. 127

Owyhee Reservoir at Owyhee Dam,near

Nyssa, Oreg....................... 128

Owyhee River above China diversion

dam, near Owyhee, Nev............. 126

above Owyhee Reservoir, Oreg.......... 127

at Mountain City, Nev................. 125

below Owyhee Dam, Oreg................ 129

near Qold Creek, Nev.................. 124

Owyhee River Basin, Nev.-Oreg.,gagingstation records In...............123-129

Oxbow, Oreg., Snake River at............ 32

P. A. lateral near Mllner, Idaho........ 86

Pahsimeroi River near Hay, Idaho........ 212

Palouse River, South Fork of, at

Pullman, Wash..................... 239

Palouse River Basin, Wash., gaglngstation record in................. 239

Payette, Idaho, Payette River near...... 163

Payette Lake at Lardo, Idaho............ 168

Payette River, Lake Fork of, above

reservoir, near ItcCall, Idaho..... 172

below Lake Irrigation District ,

canal, near ItcCall, Idaho......... 174

near Emmett, Idaho.................... 162

near Horseshoe Bend, Idaho............ 161

near Payette, Idaho................... 163

North Fork of, at Cascade, Idaho...... 170

at Lardo, Idaho......... ........ 169

near Smiths Ferry, IdaLj.....* .. - 171

South Fork of, at Lomnan, Idaho....... 158

near Banks, Idaho................... 160

near Garden Valley, Idaho........... 159

Payette River Basin, Idaho, gaglngstation records in...............158-176

Picabo, Idaho, Silver Creek near........ 113

Pine Creek (Boise River Basin) above

Barry Placer diversion,near Idaho

City, Idaho......................146-147

Pine Creek (Weiser River Basin) near

Cambridge, Idaho.................. 191

Pocatello, Idaho, Portneuf River at..... 79

Porter Creek near Qardena, Idaho........ 176

Portneuf River at Pocatello, Idaho...... 79

at Topaz, Idaho....................... 78

Portneuf River Basin, Idaho, gagingstation records in................ 78-80

Powder River at Salisbury, Oreg......... 200

near Robinette, Oreg.................. 201

Powder River Basin, Oreg., gagingstation records in...............200-201

Publications on stream flow by Geological Survey..................... 4-7,9

by State agencies..................... 7-8

Pullman, Wash., South Fork of Palouse

River at.......................... 239

Rezburg, Idaho, Henrys Fork near........

Richfield, Idaho, Big Wood River near... 

Lincoln canal near.....................

Little Wood River near................

Magic Reservoir near..................

Riordan Creek, Idaho, discharge measurements of..........................

Riverside, Oreg., Malheur River near....

Robinette, Oreg., Powder River near.....

Rock Creek near Twin Falls, Idaho.......

Rockwell bypass canal, Idaho, discharge 

measurements of...................

diversions from, discharge measurement s of..........................

wasteway of, discharge measurements of 

Rogerson, Idaho, Salmon River Canal Co. 

canal near........................

Salmon River Canal Co. Reservoir near.

48

99

105

111

98

342

153

201

91

240

240

94

93
246 INDEX

Page

Rondowa, Oreg., Grande Ronde River at.. 224 

Run-off In Inches, definition of....... 1

Rush Creek at Cambridge, Idaho......... 190

St. Anthony, Idaho, Henrys Fork at..... 46

Teton River near..................... 65

Salisbury, Oreg., Powder River at...... 200

Salmon, Idaho, Leiuhl River at.......... 213

Salmon River at...................... 207

Salmon Falls Greek near San Jaolnto,

Hev.............................. 92

Salmon Falls Creek Basin, Nev., gagIngstation records In............... 92-94

Saloon River at Salmon, Idaho.......... 207

at Whlteblrd, Idaho.................. 208

below Valley Creek, at Stanley,

Idaho............................ 204

below Yankee Fork, near Clayton,

Idaho............................ 2C5

discharge measurements of............ 241

East Fork of South Fork of, at

Stlbnlte, Idaho.................. 218

near Stlbnlte, Idaho............... 219

near Yellow Fine, Idaho............ 220

Middle Fork of, near Cape Horn,

Idaho............................ 214

near Challls, Idaho.................. 206

near Obsidian, Idaho................. 203

South Fork of, near Knox, Idaho...... 216

near Warren, Idaho................. 217

Yankee Fork of, near Clayton, Idaho.. 211 

Salmon River Basin, Idaho, discharge

measurements In.................241-242

gaglng-statlon records In........... 203-222

Salmon River Canal Co. canal near

Rogerson, Idaho.................. 94

Salmon River Canal Co. Reservoir near

Rogerson, Idaho.................. 93

Salt River at Wyoming-Idaho State line. 37 

near Smoot, Wyo...................... 36

Salt River Basin, Wyo., gaglng-statlon

records In..I.................... 36-39

San Jaclnto, Nev., Salmon Falls Creek

near............................. 92

Second-feet per square mile, definition

of............................... 1

Second-foot, definition of............. 1

Second-foot-day, definition of......... 1

Selway River near Lowell, Idaho........ 232

Sharp ditch near Mackay, Idaho......... 77

Shelley, Idaho, Snake River near....... 16

Shoshone, Idaho, Lincoln canal near.... 106

Little Wood River at................. 112

Silver Creek near Plcabo, Idaho........ 113

Small, Idaho, Medicine Lodge Creek near 66 

Smiths Ferry, Idaho, North Fork of

Payette River near............... 171

Smoot, Wyo., Cottonwood Creek near..... 38

Salt River near...................... 36

Snake River at Calamity Point, near

Irwln, Idaho..................... 13

at Clough Ranch, near Blackfoot,

Idaho............................ 18

Snake River at King Hill, Idaho.....29,pi.1,A

at Hllner, Idaho..................... 24

at Koran, Wyo........................ 12

at Neeley, Idaho..................... 21

at Oxbow, Oreg....................... 32

at Welser, Idaho..................... 31

below Lower Salmon Falls, near Eagerman, Idaho....................... 28

diversions from, between flelse and

Shelley gaging stations, Idaho... 15 

between Shelley and Clough Ranch

gaging stations, Idaho........... 17

near Cl'arkston, Wash......... ,.33-34, pi.1,0

near Hagenoan, Idaho................. 27

near Helse, Idaho.................... 14

near KImberly, Idaho................. 25

near Mlnldoka, Idaho................. 23

near Murphy, Idaho................30,pl.l.B

near Shelley, Idaho.................. 15

near Twin Falls, Idaho............... 26

South Side Mlnldoka canal near Mlnldoka

Idaho............................ 82

South Side Twin Falls canal at Mllner,

Idaho............................ 90

Stage-discharge relation, definition of 1 

Stanley, Idaho, Salmon River at........ 204

Pago 

Stanley, Idaho, Valley Creek at........ 310

Starkey, Idaho, Welser River at........ 178

Stlbnlte, Idaho, East Fork of South

Fork of Salmon River at.......... 218

East Fork of South Fork of Salmon

River near....................... 219

Spalding, Idaho, Clear-water River at... 234 

Spencer, Idaho, Beaver Creek at........ 61

Fall River near...................... 51

Strawberry Creek near Bedford, Wyo..... 39

Tamarack, Idaho, Boulder Creek near.... 222

Lost Creek near................../... 186

Lost Valley Reservoir near........... 184

Welser River at...................... 177

Terms, definition of................... 1

Terreton, Idaho, Mud Lake near......... 58

Teton River, diversions from, between 

St. Anthony gaging station and 

mouth, Idaho.................. J.. 56

near St. Anthony, Idaho.............. 55

near Tetonla, Idaho.................. 54

Thorn Creek spillway near Qoodlng,

Idaho............................ 107

Topaz, Idaho, Portneuf River at........ 78

Trapper Creek near Oakley, Idaho....... 85

Twin Falls, Idaho, Rock Creek near..... 91

Snake River near..................... 26

Twin Springs, Idaho, Boise River near.. 130

Union, Oreg., Catherine Creek near. 

Unity Reservoir near Unity, Oreg...

Valley Creek ait Stanley, Idaho.

226

198

210

Wallowa, Oreg., Bear Creek near........ 230

Wallowa Falls power-plant tallrace near

Joseph, Oreg..................... 227

Wallowa River, East Fork of, near

Joseph, Oreg..................... 226

Warm River, Idaho, Henrys Fork at...... 43

Warm Spring Creek (Big Lost River Basin) 

east channel of, near Hackay, 

Idaho............................ 75

west channel of, near Hackay, Idaho.. 76 

Warm Springs Creek (Big Wood River

Basin) at Guyer Hot Springs, near 

Eetchum, Idaho................... 102

Warmsprlngs Creek (Halbeur River Basin),

Idaho, discharge measurements of. 241 

Warmsprlngs Reservoir, Oreg., contents

of............................... 155

Warren, Idaho, South Pork of Salmon

River near....................... 217

Webb Creek, Idaho, discharge measurements of......................... 242

Welser, Idaho, Crane Creek near........ 195

Ifann Creek near...................... 197

Snake River at....................... 31

Welser Irrigation District canal near 196 

Welser River near.................... 181

Welser Irrigation District canal near

Welser, Idaho.................... 196

Welser River above Crane Creek, near

Welser, Idaho.................... 181

at Starkey, Idaho.................... 178

at Tamarack, Idaho................... 177

discharge measurements of............ 241

East Fork of, near Council, Idaho.... 182

Middle Fork of, near Mesa, Idaho..... 1S7

near Cambridge, Idaho................ 180

near Council, Idaho.................. 179

West Fork of, near Frultvale, Idaho..' 183 

Welser River Basin, Idaho, discharge

measurements In.................. 241

gaglng-statlon records In...........177-197

Whlteblrd, Idaho, Salmon River at...... 208

Wlokahoney Creek near Bruneau, Idaho... 121 

Wild Horse Reservoir near Gold Creek,

Nev.............................. 123

Winchester, Idaho, Mission Creek near.. 238 

Work, division of...................... 10

scope of............................. 1

Yankee Fork. See Salmon River, Yankee

Fork of. 

Yellow Pine, Idaho, East Fork of South

Fork of Salmon River near........ 220

Johnson Creek at..................... 221

o