Surface Water Supply 

of the United States 

1957

Part 13. Snake River Basin

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

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1517

Prepared in cooperation with the 

States of Idaho, Nevada, Oregon, 

Utah, ff^ashington, and ff^yoming, 

and with other agencies

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1959
UNITED STATES DEPARTMENT OF THE INTERIOR 

FRED A. SEATON, Secretary

GEOLOGICAL SURVEY 

Thomas B. Nolan, Director

For sale by the Superintendent of Documents, U.S. Government Printing Office 

Washington 25, D.C. Price $1 (paper cover)
PREFACE

This report was prepared by the Geological Survey in cooperation 

with the States of Idaho, Nevada, Oregon, Utah, Washington, and 

Wyoming, and with other agencies, by personnel of the Water Eesources Division, L. B. Leopold, chief, under the general direction of 

J. V. B. Wells, chief, Surface Water Branch, and F. J. Flynn, chief, 

Basic Eecords Section.

The data were collected and computed under supervision of district 

engineers, Surface Water Branch, as follows:

Lynn Crandall _________________Idaho Falls, Idaho 

T. R. Newell___________________________Botee, Idaho 

K. N. Phillips_________________________Portland, Oreg. 

J. M. Terry (succeedied by W. T. Miller)__________Denver, Colo. 

F. M. Veatch _ __ ________________Tacoma, Wash.

M. T. Wilson-______________________Salt Lake City, Utah

m
CALENDAR FOR WATER YEAR 1957

OCTOBER 1956

S M T W T F S 

123456

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

JANUARY 1957

5 M T W T F S 

12345

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

APRIL 1957

S M T W T F S 

123456

7 8 9 10 11 12 13 

14 15 16 17 18 19 20 

21 22 23 24 25 26 27 

28 29 30

JULY 1957

S M T W T F S 

123456

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

NOVEMBER 1956

S M T W T F S 

123

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

FEBRUARY 1957

S M T W T F S 

1 2

3456789 

10 11 12 13 14 15 16 

17 18 19 20 12 22 23 

24 25 26 27 28

MAY 1957

S M T W T F S 

1234

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

AUGUST 1957

S M T W T F S 

123

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

DECEMBER 1956

S M T W T F S 

1

2345678

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30 31

MARCH 1957

S M T W T F S 

1 2

3456789 

10 11 12 13 14 15 16 

17 18 19 20 21 22 23 

24 25 26 27 28 29 30 

31

JUNE 1957

S M T W T F S 

1

2345678

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30

SEPTEMBER 1957

S M T W T F S

1234567

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30

IV
CONTENTS

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

Cooperation.......................................................................... 1

Division of work..................................................................... 2

Definition of terms and abbreviations................................................ 2

Downstream order of listing gaging stations.......................................... 3

Explanation of data.................................................................. 3

Accuracy of field data and computed results.......................................... 8

Publications......................................................................... 8

Records of discharge collected by agencies other than the Geological Survey.......... 11

Hydrologic conditions................................................................... 11

Gaging-station records............................................................... 13

Jackson Lake at Moran, Wyo......................................................... 13

Snake River at Moran, Wyo.......................................................... 14

Pacific Creek basin

Pacific Creek near Moran, Wyo.................................................... 15

Buffalo Pork basin

Buffalo Fork near Moran, Wyo..................................................... 16

Gros Ventre River basin

Gros Ventre River at Kelly, Wyo.................................................. 17

Hoback giver basin

Hoback River near Jackson, Wyo................................................... 18

Snake River above reservoir, near Alpine, Wyo...................................... 19

Greys River basin

Greys River above reservoir, near Alpine, Wyo...................................'. 20

Salt River basin

Salt River near Smoot, Wyo....................................................... 21

Cottonwood Creek near Smoot, Wyo............................................... 22

Swift Creek near Afton, Wyo.................................................... 23

Salt River above reservoir, near Etna, Wyo....................................... 24

McCoy Creek basin

McCoy Creek above reservoir, near Alpine, Idaho.................................. 25

Indian Creek basin

Indian Creek above reservoir, near Alpine, Idaho................................. 26

Elk Creek basin

Elk Creek above reservoir, near Irwin, Idaho..................................... 27

Bear Creek basin

Bear Creek above reservoir, near Irwin, Idaho.................................... 28

Palisades Reservoir near Irwin, Idaho.............................................. 29

Snake River near Irwin, Idaho...................................................... 30

Snake River near Heise, Idaho...................................................... 31

Henrys Fork basin

Henrys Pork near Lake, Idaho..................................................... 32

Island Park Reservoir near Island Park, Idaho.................................... 33

Henrys Pork near Island Park, Idaho.............................................. 34

Henrys Fork near Ashton, Idaho................................................... 35

Pall River:

Diversions from Pall River above gaging station near Squirrel, Idaho......... 36

Pall River near Squirrel, Idaho................................................ 36

Diversions from Fall River between Squirrel and Chester gaging stations,

Idaho.................................................................. 37

Pall River near Chester, Idaho................................................. . 37

Diversions from Henrys Pork between Ashton and St. Anthony gaging stations,

Idaho.................................................................... 38

Henrys Pork at St. Anthony, Idaho................................................ 38

Teton River near Tetonia, Idaho................................................ 39

Teton River near St. Anthony, Idaho............................................ 40

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

Idaho.................................................................. 41

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

Idaho.................................................................... 41

Henrys Pork near Rexburg, Idaho.................................................. 42

Smaller reservoirs in Henrys Fork basin.......................................... 43

Diversions from Snake River between Heise and Shelley gaging stations, Idaho..... 44

Snake River near Shelley, Idaho.................................................... 44

Blackfoot River basin

Blackfoot River near Blackfoot, Idaho............................................ 45

Diversions from Snake River between Shelley and Blackfoot gaging stations, Idaho. 46 

Snake River near Blackfoot, Idaho.................................................. 46

Portneuf River basin

Portneuf River at Topaz , Idaho................................................... 47

Marsh Creek near McCammon, Idaho............................................... 48

Portneuf River at Pocatello, Idaho ............................................... 49

Bannock Creek basin

Bannock Creek near Pocatello , Idaho.............................................. 50

American Palls Reservoir at American Palls, Idaho.................................. 51

Snake River at Neeley, Idaho....................................................... 52

Rock Creek basin

Rock Creek near Rockland, Idaho.................................................. 53

Raft River basin

Raft River at Peterson Ranch, near Bridge, Idaho................................. 54

V
VI CONTENTS

Gaging-station records--Continued 

Snake River Continued

Raft River basin Continued Page 

Clear Creek near Naf, Idaho.................................................... 55

Cassia Creek near Elba, Idaho.................................................. 56

Lake Waloott near Minidoka, Idaho.................................................. 57

Diversions from Lake Walcott

North Side Minidoka Canal near Minidoka, Idaho................................... 58

South Side Minidoka Canal near Minidoka, Idaho................................... 59

Snake River near Minidoka, Idaho................................................... 60

Goose Creek basin

Goose Creek above Trapper Creek, near Oakley, Idaho.............................. 61

Trapper Creek near Oakley, Idaho............................................... 62

Oakley Reservoir near Oakley, Idaho.............................................. 63

Diversions from Snake River between Goose Creek and Snake River at Milner

Minidoka North Side Pump Canal near Bur-ley, Idaho................................ 64

P. A. lateral near Milner, Idaho................................................. 65

Milner low-lift canal near Milner, Idaho......................................... 66

Gooding Canal at Milner, Idaho................................................... 67

North Side- Twin Palls Canal at Milner, Idaho..................................... 68

South Side Twin Palls Canal at Milner, Idaho..................................... 69

Snake River at Milner, Idaho....................................................... 70

Devils Washbowl Spring basin

Devils Washbowl Spring near Kimberly, Idaho...................................... 71

Snake River near Kimberly, Idaho................................................... 72

Blue Lakes Spring basin

Blue Lakes Spring near Twin Palls, Idaho......................................... 73

Rock Creek basin

Rock Creek near Rock Creek, Idaho................................................ 74

Cedar Draw basin

Cedar Draw near Filer, Idaho..................................................... 75

Snake River near Buhl, Idaho....................................................... 76

Deep Creek basin

Deep Creek near Buhl, Idaho...................................................... 77

Box Canyon Springs basin

Box Canyon Springs near Wendell, Idaho........................................... 78

Salmon galls Creek basin

Salmon Falls Creek above upper Vineyard ditch, near Contact, Nev................. 79

Salmon Palls Creek near San Jacinto, Nev......................................... 80

Salmon River Canal Co. reservoir near Rogerson, Idaho............................ 81

Salmon River Canal Co. canal near Rogerson, Idaho.............................. 82

Cedar Creek Reservoir near Roseworth, Idaho.................................... 83

Cedar Creek near Roseworth, Idaho.............................................. 83

Salmon Palls Creek near Buhl, Idaho.............................................. 84

Mud Lake-Lost River basins 

Mud Lake:

Camas Creek at Camas, Idaho.................................................. 85

Beaver Creek at Dubois, Idaho.............................................. 86

Beaver Creek at Camas, Idaho............................................... 87

Mud Lake near Terreton, Idaho.................................................. 88

Medicine Lodge Creek at Ellis Ranch, near Argora, Idaho........................ 89

Birch Creek near Reno, Idaho................................................... 90

Little Lost River near Howe, Idaho............................................. 91

Blaine County Investment Co.' s canal near Howe, Idaho........................ 92

Big Lost River at Wild Horse, near Chilly, Idaho............................... 93

Big Lost River at Howell Ranch, near Chilly, Idaho............................. 94

Big Lost River (east channel) above Mackay Reservoir, near Mackay, Idaho....... 95

Big Lost River (west channel) above Mackay Reservoir, near Mackay, Idaho....... 96

Warm Spring Creek (east channel) near Mackay, Idaho.......................... 97

Warm Spring Creek (west channel) near Mackay, Idaho.......................... 98

Surface inflow to Mackay Reservoir, near Mackay, Idaho......................... 99

Mackay Reservoir near Mackay, Idaho............................................ 100

Sharp ditch near Mackay, Idaho............................................... 101

Big Lost River below. Mackay Reservoir, near Mackay, Idaho...................... 102

Big Lost River"near Arco,- Idaho................................................ 103

Riley Creek basin

Riley Creek: 

Lewis Spring:

Brailsford ditch near Hagerman, Idaho........................................ 104

Riley Creek below Lewis Spring, near Hagerman, Idaho............................. 105

Snake River below Lower Salmon Palls, near Hagerman, Idaho......................... 106

Malad River basin

Big Wood River (head of Malad River) near Ketchum, Idaho......................... 107

Warm Springs Creek at Guyer Hot Springs, near Ketchum, Idaho.................... 108

Big Wood Slough at Hailey, Idaho............................................... 109

Big Wood River at Hailey, Idaho...... 1........................................... 110

Big Wood River near Bellevue, Idaho.............................................. 112

Camas Creek near Blaine, Idaho................................................. 113

Magic Reservoir near Richfield, Idaho............................................ 114

Big Wood River below Magic Dam, near Richfield, Idaho............................ 115

Little Wood River at Campbell Ranch, near Carey, Idaho......................... 116

Little Wood Reservoir near Carey, Idaho........................................ 117

Little Wood River below reservoir, near Carey, Idaho........................... 118

Little Wood River near Carey, Idaho............................................ 119

Silver Creek near Picabo, Idaho.............................................. 120

Little Wood River near Richfield, Idaho........................................ 121

Little Wood River at Shoshone, Idaho........................................... 122

Malad River near Gooding, Idaho.................................................. 123

King Hill Canal near Hagerman, Idaho........................................... 124
CONTENTS VII

Gaging-station records Continued Page 

Snake River at King Hill, Idaho.................................................... 125

Canyon Creek basin 

Canyon Creek:

Mountain Home feeder canal near Mountain Home, Idaho........................... 126

Bruneau River basin 

Bruneau River:

East Pork Jarbidge River near Three Creek, Idaho............................... 127

East Pork Bruneau River below Three Creek, near Three Creek, Idaho............. 128

East Pork Bruneau River near Hot Spring, Idaho................................. 129

Bruneau River near Hot Spring, Idaho............................................. 130

C. J. Strike Reservoir near Grand View, Idaho...................................... 131

Snake River near Murphy, Idaho..................................................... 131

Owyhee River basin

Wild Horse Reservoir near Gold Creek, Nev........................................ 132

Owyhee River near Gold Creek, Nev................................................ 133

Owyhee River above China diversion dam, near Owyhee, Nev......................... 134

South Pork Owyhee River near Whiterock, Nev.................................... 135

Jordan Creek above Lone Tree Creek, near Jordan Valley, Oreg................... 136

Owyhee River near Rome, Oreg..................................................... 137

Owyhee Reservoir at Owyhee Dam, near Nyssa, Oreg................................. 138

Owyhee River below Owyhee Dam, Oreg.............................................. 139

Boise River basin

Boise River near Twin Springs, Idaho............................................. 140

South Pork Boise River near Peatherville, Idaho................................ 141

Little Camas Creek:

Little Camas Canal at heading, near Bennett, Idaho......................... 142

Anderson Ranch Reservoir total surface inflow determination.................... 142

Anderson Ranch Reservoir at Anderson Ranch Dam, Idaho.......................... 143

South Pork Boise River at Anderson Ranch Dam, Idaho............................. 144

Arrowrock Reservoir at Arrowrock, Idaho.......................................... 145

Boise River: 

Moore Creek:

Bannock Creek near Idaho City, Idaho......................................... 146

Moore Creek above Robie Creek, near Arrowrock, Idaho........................... 147

Robie Creek near Arrowrock, Idaho............................................ 148

Lucky Peak Reservoir near Boise, Idaho........................................... 149

Boise River near Boise, Idaho.................................................... 150

Lake Lowell near Caldwell, Idaho............................................... 151

Diversions from Boise River between near Boise and at Boise gaging stations,

Idaho.................................................................... 152

Boise River at Boise, Idaho...................................................... 153

Dry Creek:

Spring Valley Creek near Eagle, Idaho........................................ 154

Dry Creek near Eagle, Idaho.................................................... 155

Dry Creek at Eagle, Idaho...................................................... 156

Diversions from Boise River between Boise and Notus gaging stations, Idaho..... 156

Boise River at Notus, Idaho...................................................... 157

Malheur River basin

Malheur River near Drewsey, Oreg................................................. 158

Malheur River below Warmsprings Reservoir, near Riverside, Oreg.................. 159

North Pork Malheur River above Agency Valley Reservoir, near Beulah, Oreg...... 160

North Pork Malheur River at Beulah, Oreg....................................... 161

Malheur River at Little Valley, near Hope, Oreg.................................. 162

Bully Creek near Vale, Oreg.................................................... 163

Reservoirs in Malheur River basin, Oreg.......................................... 164

Payette River basin

South Fork Payette River at Lowman, Idaho........................................ 165

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

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

South Fork Payette River near Garden Valley, Idaho............................... 168

South Pork Payette River near Banks, Idaho....................................... 169

North Pork Payette River:

Payette Lake at McCall, Idaho.................................................. 170

North Pork Payette River at McCall, Idaho...................................... 171

Lake Pork Payette River above Jumbo Creek, near McCall, Idaho................ 172

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

Lake Irrigation District Canal near McCall, Idaho.......................... 174

Lake Pork Payette River below Lake Irrigation District Canal, near McCall,

Idaho................................................................... 175

Cascade Reservoir at Cascade, Idaho............................................ 176

North Pork Payette River at Cascade, Idaho..................................... 177

North Pork Payette River near Banks, Idaho..................................... 178

Payette River near Horseshoe Bend, Idaho......................................... 179

Payette River near Emmett, Idaho................................................. 180

Payette River near Payette, Idaho................................................ 181

Weiser River basin

Weiser River at Tamarack, Idaho.................................................. 182

West Pork Weiser River: 

Lost Creek: 

Lost Valley Reservoir near Tamarack, Idaho................................... 183

Lost Creek near Tamarack, Idaho.............................................. 184

Weiser River near Cambridge, Idaho............................................... 185

Pine Creek near Cambridge, Idaho............................................... 186

Little Weiser River near Indian Valley, Idaho.................................. 187

Crane Creek Reservoir near Mldvale, Idaho...................................... 188

Crane Creek near Mldvale, Idaho................................................ 189

Crane Creek at mouth, near Weiser, Idaho....................................... 190
VIII CONTENTS

Gaging-station records Continued

Snake River Continued Page 

Weiser River near Weiser, Idaho.................................................. 191

Weiser Irrigation District Canal near Weiser, Idaho............................ 192

Mann Creek near Weiser, Idaho.................................................. 193

Snake River at Weiser, Idaho....................................................... 194

Burnt River basin

Burnt River:

Unity Reservoir near Unity, Oreg................................................. 195

Burnt River near Hereford, Oreg.................................................. 196

Burnt River near Bridgeport, Oreg................................................ 197

Burnt River at Huntington, Oreg................................................... 198

Powder River basin

Powder River near Baker, Oreg.................................................... 199

Powder River near Robinette, Oreg................................................ 200

Snake River at Oxbow, Oreg......................................................... 201

Snake River near Joseph, Idaho..................................................... 202

Imnaha River basin

Imnaha River at Imnaha, Oreg..................................................... 203

Salmon River basin 

Salmon River: 

Valley Creek at Stanley, Idaho................................................. 204

Salmon River below Valley Creek, at Stanley, Idaho............................... 205

Salmon River below Yankee Pork, near Clayton, Idaho.............................. 206

Salmon River near Challis, Idaho................................................. 207

Challis Creek near Challis, Idaho .............................................. 208

Pahsimeroi River near May, Idaho............................................... 209

Salmon River at Salmon, Idaho.................................................... 210

Lemhi River:

Texas Creek near Leadore, Idaho.............................................. 211

Lemhi River near Lemhi, Idaho.................................................. 212

Panther Creek near Shoup, Idaho................................................ 213

Salmon River near Shoup, Idaho................................................... 214

Middle Pork Salmon River near Cape Horn, Idaho................................. 215

Bear Valley Creek near Cape Horn, Idaho...................................... 216

Big Creek near Big Creek, Idaho.............................................. 217

South Fork Salmon River near Knox, Idaho....................................... 218

East Fork of South Fork Salmon River:

Johnson Creek at Yellow Pine, Idaho........................................ 219

Little Salmon River:

Mud Creek near Tamarack, Idaho............................................... 220

Little Salmon River at Riggins, Idaho.......................................... 221

Salmon River at Whitebird, Idaho................................................. 222

Grande Ronde River basin

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

Catherine Creek near Union, Oreg............................................... 224

Grande Ronde River near Elgin, Oreg.............................................. 225

Wallowa River:

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

Wallowa Lake near Joseph, Oreg................................................. 227

Wallowa River at Joseph, Oreg.................................................. 228

Hurricane Creek near Joseph, Oreg............................................ 229

Lostine River near Lostine, Oreg............................................. 230

Bear Creek near Wallowa, Oreg................................................ 231

Grande Ronde River at Rondowa, Oreg.............................................. 232

Grande Ronde River at Troy, Oreg................................................. 233

Asotin Creek basin

Asotin Creek near Asotin, Wash................................................... 234

Clearwater River basin

Selway River (head of Clearwater River) near Lowell, Idaho....................... 235

Lochsa River:

Warm Springs Creek near Powell ranger station, Idaho......................... 236

Lochsa River near Lowell, Idaho................................................ 237

Middle Fork Clearwater River (continuation of Selway River):

South Fork Clearwater River near Elk City, Idaho............................... 238

South Fork Clearwater River near Grangeville, Idaho............................ 239

Clearwater River at Kamiah, Idaho................................................ 240

North Fork Clearwater River at Bungalow ranger station, Idaho.................. 241

North Fork Clearwater River near Ahsahka, Idaho................................ 242

Potlatch Creek at Kendrick, Idaho.............................................. 243

Clearwater River at Spalding, Idaho.............................................. 244

Snake River near Clarkston, Wash................................................... 245

Palouse River basin

Palouse River near Colfax, Wash.................................................. 246

Union Flat Creek near Colfax, Wash............................................. 247

Palouse River at Hooper, Wash.................................................... 248

Cow Creek:

Williams Lake near Amber, Wash............................................... 249

Discharge measurements at points other than gaging stations.......................... 250

Index................................................................................ 257

ILLUSTRATIONS

Page

Figure 1. Gaging-station structures: A, Snake River at King Hill, Idaho; B, North 

Fork Payette River near Banks, Idaho; C_, Snake River near Clarkston, 

Wash.................................................................... 4

2. Map of the United States showing areas covered by the 18 annual volumes on

surface-water supply.................................................... 9

3. Comparison of discharge at two key gaging stations during 1957 water year

with median discharge for 25-year period................................ 12
SURFACE WATER SUPPLY OF SNAKE RIVER BASIN, 1957

SCOPE OF WORK

This volume is one of a series of 18 reports presenting measurements of stage, discharge, 

and content of streams, lakes, and reservoirs in the United States during the water year 

ending September 30, 1957. Since 1888, when the United States Geological Survey first 

studied streamflow in relation to problems of irrigation, similar measurements have been 

made at more than 13,750 gaging stations in the 48 States and at many others in the Territories of Alaska and Hawaii. On September 30, 1957, the Geological Survey and cooperating 

organizations were maintaining V ,030 gaging stations, including those in Alaska and Hawaii. 

Discharge measurements only were made at many other points in the 1957 water year. The 

name of each stream measured at points other than gaging stations is not listed in the 

index of this report. Only the major river basins in which measurements were made are 

listed under the item "Discharge measurements" in the index.

COOPERATION

Many State, municipal, and private organizations have cooperated with the Geological 

Survey in this work by either furnishing or helping to collect data. Organizations that 

supplied data are acknowledged in station descriptions, and organizations that assisted in 

the collection of data through cooperative agreements with the Survey are:

Idaho: Idaho Department of Reclamation, M. R. Kulp, State reclamation engineer; 

Idaho State Fish and Game Commission, Ross Leonard, director; and Big Lost River 

Irrigation District, R. C. Rothwell, president.

Nevada; Department of Conservation and Natural Resources, H. A. Shamberger, director, and office of State Engineer, Edmund Muth.

Oregon: Office of the State Engineer, L. A. Stanley, and State Highway Commission, 

C. H. Reynolds, chairman.

Utah: Office of the State Engineer, J. M. Tracy, succeeded by W. D. Criddle. 

Washington: State Department of Conservation, W. A. Galbraith, director, succeeded 

by Earl Coe, through Division of Water Resources, M. G. Walker, supervisor.

Wyoming: Office of the State Engineer, Earl Lloyd.

Assistance in the form of funds or services was given by the Corps of Engineers , Department of the Army, in collecting records published herein for 21 gaging stations, of which 

13 were in Idaho, 3 in Oregon, 1 in Washington, and 4 in Wyoming.

Assistance was also furnished by the Soil Conservation Service of the Department of 

Agriculture; by the Bonneville Power Administration, and the Bureau of Reclamation of the 

United States Department of the Interior; and by the Atomic Energy Commission. 

The following organizations aided in collecting records:

Idaho: Board of Control for Boise Project, Idaho Power Co., Idaho Water 

District 36, North Side Canal Co., Twin Palls Canal Co., Utah Power & Light Co., 

Washington Water Power Co. , Pacific Northwest Power Co. , American Falls Reservoir 

District 2, and watermasters for Big Lost, Little Lost, Big Wood, Little Wood, Boise, 

and Lake Fork Payette Rivers, and Mud Lake.

Oregon: Baker, Malheur, Union, and Wallowa Counties; Pacific Power & Light Co.,

1
2 SURFACE WATER SUPPLY, 1957, PART 13

and Warmsprings Irrigation District.

Washington: Washington Water Power Co.

DIVISION OF WORK

The stream gaging work was done by the Water Resources Division of the Geological 

Survey under the direction of personnel shown in the preface. The data for stations in 

the several States were collected and prepared for publication in the district offices 

listed below.

State District office Address

Idaho a/................... Boise ......................... 914 Jefferson Street.

Idaho B/................... Idaho Falls ................... 204 Federal Building.

Nevada c/.................. Salt Lake City, Utah.......... 300 Federal Building.

Oregon 37.................. Portland...................... 1001 NE. Lloyd Boulevard.

Utah e/7................... Salt Lake City................ 300 Federal Building.

Washington................. Tacoma........................ 207 Federal Building.

Wyoming f/................. Denver, Colo.................. Denver Federal Center.

e/ Including Clear Creek near Naf, Idaho.

f/ Includes only the stations for Salt River and Cottonwood Creek near Smoot and Swift Creek 

near Afton In the Snake River basin in Wyoming.

Information of a more detailed nature than that published for most of the gaging stations given in this report is on file in the district offices listed above. Provisional 

records of discharge prior to publication, and other unpublished data concerning the 

gaging-station records may usually be obtained from the district office.

DEFINITION OF TERMS AND ABBREVIATIONS

The terms of streamflow and other hydrologic data, as used in this report, are defined 

as follows:

Cubic foot per second (cfs) is the rate of discharge of a stream whose channel is 

1 square foot in cross-sectional area and whose average velocity is 1 foot per second.

Cubic feet per second per square mile (cfsm) is the average number of cubic feet of 

water flowing per second from each square mile of area drained, assuming that the runoff 

is distributed uniformly in time and area.

Runoff in inches 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. The term is used 

for comparing runoff with rainfall, which is also usually expressed in inches.

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 relation to storage for 

irrigation.

Cfs-day is the volume of water represented by a flow of 1 cubic foot per second for 

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

and represents a runoff of 0.0372 inch from 1 square mile.

Stage-discharge relation is the relation between gage height and the amount of water 

flowing in a channel, expressed as volume per unit of time.
EXPLANATION OF DATA 3

Control designates a feature downstream from the gage that determines the stagedischarge relation at the gage. This feature may be a natural constriction of the channel, 

a long reach of the channel, or an artificial structure.

Contents is the volume of water in a reservoir. Unless otherwise indicated, volume is 

computed on the basis of a level pool and does not include bank storage.

The drainage area of a stream at a specified location is that area, measured in a 

horizontal plane, which is so enclosed by a topographic divide that direct surface runoff from precipitation normally would drain by gravity into the river above the specified 

point. Figures of drainage area given herein include all closed basins, or noncontributing areas, within the area unless otherwise noted.

WSP is used as an abbreviation for "Water-Supply Paper" in references to previously 

published reports.

DOWNSTREAM ORDER OF LISTING GAGING STATIONS

Beginning with the series of reports for the water year ending September 30, 1951, the 

order of listing gaging-station records was changed. In this report, in a downstream 

direction along the main stem all stations on a tributary entering above a main-stem station are listed before that station. If a tributary enters between two main-stem stations, it is listed between them. A similar order is followed in listing stations on 

first rank, second rank, and other ranks of tributaries. To indicate the rank of any 

tributary on which a gaging station is situated and the stream to which it is immediately 

tributary, each indention in the listing of gaging stations in the table of contents of 

this report represents one rank. This downstream order and system of indention show which 

gaging stations are on tributaries between any two stations on a main stem and the rank of 

the tributary on which each gaging station is situated.

The order of listing used before the publication of the 1951 report listed first all 

stations on the main stem from headwaters toward mouth, then all stations on the uppermost tributary to the main stem from the tributary's source to mouth, and then all stations from source to mouth of the uppermost tributary to the tributary.

EXPLANATION OF DATA

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

of discharge. In addition, observations of factors affecting the stage-discharge relation, weather records, and other information are used to supplement .base data in determining the daily flow. The records of stage are obtained either from direct readings on a 

nonrecording gage or from a water-stage recorder that gives a continuous record of fluctuations. Measurements of discharge are made with a current meter by the general methods 

adopted by the Geological Survey on the basis of experience in stream gaging since 1888. 

These methods are described in Water-Supply Paper 888 and are also outlined in standard 

textbooks on the measurement of stream discharge. Typical structures in use at gaging 

stations are shown in figure 1.

Rating tables giving the discharge for any stage are prepared from stage-discharge relation curves defined by discharge measurements. If extensions to the rating curves are 

necessary to define the extremes of discharge, they are made on the basis of indirect 

determinations of peak discharge (such as slope-area or contracted-opening determinations, 

computation of flow over dams or weirs, and by other methods), velocity-area studies, and
SURFACE WATER SUPPLY, 195?, PART 13

A, SNAKE RIVER AT KING HILL, IDAHO

B, NORTH FORK PAYETTE RIVER NEAR BANKS, IDAHO

C, SNAKE RIVER NEAR CLARKSTON, WASH.

FIGURE 1. GAGING-STATION STRUCTURES
EXPLANATION OF DATA 5

logarithmic plotting. The application of the daily mean gage height to those rating 

tables gives the daily 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 daily mean 

discharge is determined by the shifting-control method, in which correction factors based 

on individual discharge measurements and notes by engineers and observers are used in 

applying the gage heights to the rating tables. If the stage-discharge relation for a station is temporarily changed by the presence of aquatic growth or debris on the control, the 

daily mean discharge is computed by what is essentially the shifting-control method.

At some gaging stations the stage-discharge relation is affected by backwater from reservoirs, tributary streams, or other sources. This necessitates the use of the slope 

method in which the slope or fall in a reach of the stream is a factor in determining 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 stagedischarge relation is affected by changing stage. If so, the rate of change in 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, and it becomes 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 other stations in the same or nearby basins. If the stagedischarge relation is affected by ice, this information is given in a note to the table. 

No mention is made of occasional days of ice effect if the degree of accuracy of daily 

records is not changed.

The data herein presented generally comprise a description of the station, a skeleton 

rating table, and a table showing the daily discharge and monthly and yearly discharge and 

runoff of the stream. Records are published for the water year which begins on October 1 

and ends on September 30. A calendar for the water year 1957 is shown on Page IV for the 

purpose of finding the day of the week for any date.

The description of the station gives the location, drainage area, records available, 

type and history of gages, average discharge, extremes of discharge, general remarks, and 

notations of revisions of the previously published record. The location of the gaging 

station and the drainage area are obtained from the mose accurate maps available. River 

mileage, given under "Location" for some stations, is that determined and used by the 

Corps of Engineers unless otherwise noted. Under "Records available" are given the 

periods for which there are published records generally equivalent to those at the present 

site. Under "Gage" are given the type of gage currently in use and the datum of the present gage above mean sea level, and a condensed history of the types, locations, and datums 

of previous gages used during the period of records available. Under "Average discharge" 

is given the average discharge for the number of years indicated. It is not given for 

stations having fewer than five complete years of record or for stations where changes in 

water development during the period of record cause the figure to have little significance. 

Under "Extremes" are given the maximum discharge and gage height; the minimum discharge if 

there is little or no regulation; the minimum daily discharge if there is extensive
6 SURFACE WATER SUPPLY, 1957, PART 13

regulation (also the minimum discharge if useful); and the minimum gage height (unless it 

is of no importance). In the first paragraph, the data given are for the complete current 

water year unless otherwise specified. In the second paragraph, the data given are for 

the periods of record within the calendar year dates in the heading (not necessarily those 

for the complete years indicated by the heading dates). Reliable information concerning 

major floods that have occurred outside the period of record are given in the third or 

last paragraph under "Extremes." Unless otherwise qualified, the maximum discharge corresponds to the crest stage obtained by use of a water-stage recorder, a crest-stage indicator, or a non-recording gage read at the time of the crest. If the maximum gage height 

did not occur at the same time as the maximum discharge, it is given separately. Information pertaining to the accuracy of the records and conditions which affect the natural 

flow at the gaging station is given under "Remarks."

Previously published records of some stations have been found to be in error on the 

basis of data or information later obtained. Revisions of such records are usually published along with the current records in one of the annual reports. In order to make it 

easier to find such revised records, a paragraph headed "Revisions (water years)" has been 

added to the description of all stations for which revised records have been published. 

Listed therein are all the reports in which revisions have been published, each followed 

by the water years for which figures are revised in that report. In listing the water 

years only one number is given; for instance, 1933 stands for the water year October 1, 

1932, to September 30, 1933. If no daily, monthly, or annual figures of discharge are 

concerned in the revisions, that fact is brought out by notations after the year dates as 

follows: "(M)" means that only the instantaneous maximum discharge was revised; "(m) that 

only the instantaneous minimum was revised; and "(P)" that only peak discharges were 

revised. If the drainage area has been revised, the report in which the revised figure 

was first published is given. It should be noted that for all stations for which cubic 

feet per second per square mile and runoff in inches are published, a revision of the 

drainage area necessitates corresponding revision of all figures based on the drainage 

area. Revised figures of cubic feet per second per square mile and runoff in inches 

resulting from a revision of the drainage area only are usually not published in the 

annual series of reports.

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

discharge for the greater part of the open-water period was determined by the shiftingcontrol method, the slope method, or other special methods involving an equivalent adjustment to the gage height of more than one-tenth foot. Skeleton rating tables are generally 

not published for stations on canals.

For stations equipped with water-stage recorders, except those on streams subject to 

sudden or rapid fluctuation, the daily table gives the discharge corresponding to the 

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 daily mean discharge from a continuous gage-height graph and containing, as 

an essential element, a curve representing the stage-discharge relation at the station. 

For stations equipped with nonrecording gages, the table of daily discharge gives the discharge corresponding to once-daily readings of the gage, or to the mean of twice-daily 

readings, or to the mean gage height determined from gage-height graphs based on gage
EXPLANATION OF DATA 7

readings. For periods of rapidly changing stage, the daily mean discharge is determined 

from gage-height graphs based on gage readings, the frequency of which is stated in the 

station description.

In the table of daily discharge, the figures for the maximum day and the minimum day 

for each month are underlined. If the figure is repeated, it is underlined only on the 

first day of its occurrence.

In the monthly summary below the daily table, the line headed "Total" gives the sum of 

the daily figures; it is the total cfs-days for the month. The line headed "Mean" gives 

the average flow in cubic feet per second during the month. Runoff for the month may be 

expressed in cubic feet per second per square mile (line headed "Cfsm"), or in inches 

(line headed "In."), or in acre-feet (line headed "Ac-ft"). Figures for cubic feet per 

second per square mile and runoff in inches are omitted if the drainage area includes 

large noncontributing areas, or if the average annual rainfall over the drainage basin is 

usually less than 20 inches.

In the yearly summary below the monthly summary, the figures of maximum are the maximum daily discharges, not the momentary discharge when the water was at crest stage. 

Likewise, the minimums in this summary are the minimum daily discharges.

Peak discharges and the times of their occurrence and corresponding gage heights of 

most stations are listed below the table of daily and monthly discharge. All independent 

peaks above the selected base are given. The base discharge, which is given in parentheses, is selected so that an average of about three peaks a year will be presented. Peak 

discharges are not published for canals, ditches, drains, or for any stream for which the 

peaks are subject to substantial control by man.

Footnotes to the table of daily discharge indicate periods when discharge was computed 

or estimated by unusual or special methods during periods of no gage-height record and 

ice effect, or by other effects that reduce the degree of accuracy of the records. Days 

on which discharge measurements were made are indicated by asterisk and footnote unless 

they were made at frequent regular intervals, in which instance the general frequency of 

discharge measurements is given under "Remarks" in the station description.

For most gaging stations on lakes and reservoirs the data presented comprise a description of the station and a monthly summary table of stage and contents. For some reservoirs a table showing daily contents or stage is given. A skeleton table of capacity at 

given stages is published each year for all reservoirs for which records are published on 

a daily basis, but is not published for reservoirs for which only monthly data are given.

Discharge measurements and determinations of peak flows made at sites other than gaging 

stations are listed at the end of each report.

At many gaging stations water samples are collected from the streams for the purpose of 

making chemical analyses, computing dissolved solids, suspended sediment loads, and 

particle-size distribution, or measuring water temperatures. For most of these samples the 

results are published in an annual series of water-supply papers entitled "Quality of Surface Waters of the United States" which is Issued in four volumes. In this report under 

"Remarks" a reference is made to quality-of-water records collected at gaging stations on 

a regular basis and published in the quality-of-water reports. At many other gaging stations quality-of-water data are obtained at irregular intervals and published as "miscellaneous analyses" in quality-of-water reports; such records are not referred to in 

"Remarks" paragraph in this report. At many gaging stations water temperature is obtained
8 SURFACE WATER SUPPLY, 1957, PART 13

also at the time a discharge measurement is made; such temperature readings are not 

reported in the quality-of-water annual reports.

ACCURACY OF FIELD DATA AND COMPUTED RESULTS

The accuracy of streamflow data depends primarily on (1) the stability of the stagedischarge relation or, if the control is unstable, the frequency of discharge measurements, and (2) the accuracy of observations of stage, measurements of discharge, and 

interpretation of records.

The station description states the degree of accuracy of the records. "Excellent" 

indicates that, in general, the error in the daily records is believed to be less than 

5 percent; "good," less than 10 percent; "fair," less than 15 percent; and "poor," probably more than 15 percent. The records of monthly and yearly mean discharge and runoff 

are, in general, more nearly accurate than the daily records.

Runoff at some stations, as indicated by the monthly mean, may vary widely from natural 

runoff, owing to diversion, consumption, regulation by storage, increase or decrease in 

evaporation due to artificial causes, or to other factors. For such stations, figures of 

cubic feet per second per square mile and runoff in inches are not published unless storage or diversion records are included to indicate the extent of the regulation of diversion, or unless satisfactory adjustments can be made for changes in contents of reservoirs 

or for other changes incident to use and control. Evaporation from a reservoir is not 

included in the adjustments for changes in reservoir contents, unless it is so stated. 

Even at those stations where adjustments are made, large errors in computed runoff may 

occur when relatively large negative adjustments are made or when evaporation is large in 

comparison with the observed discharge.

Many gaging stations on streams in the irrigated areas of the United States are situated above most of the diversions from those streams, and therefore the discharge recorded 

does not actually show the water supply available at the stations for further development, 

because water must first be supplied to existing irrigation systems.

PUBLICATIONS

To facilitate publication of the annual series of reports, the area of the United 

States is divided into 14 parts whose boundaries coincide with certain natural drainage 

lines. Formerly, the results of strearaflow measurements were published in 14 volumes, one 

for each of the 14 parts. Beginning with the reports for 1951, the records are published 

in 18 volumes, there being 2 volumes each for Parts 1, 2, 3, and 6. The boundaries of the 

various parts are indicated by the following list and the map in figure 2.

Part 1. North Atlantic slope basins, in two volumes:

A, North Atlantic slope basins, Maine to Connecticut. 

B, North Atlantic slope basins, New York to York River.

2. South Atlantic slope and eastern Gulf of Mexico basins, in two volumes: 

A, South Atlantic slope basins, James River to savannah River. 

B, South Atlantic slope and eastern Gulf of Mexico basins, Ogeechee River 

to Pearl River.

3. Ohio River basin, in two volumes:

A, Ohio River basin except Cumberland and Tennessee River basins. 

B, Cumberland and Tennessee River basins.

4. St. Lawrence River basin.

5. Hudson Bay and upper Mississippi River basins.

6. Missouri River basin, in two volumes:

A, Missouri River basin above Sioux City, Iowa 

B, Missouri River basin below Sioux City, Iowa.

7. Lower Mississippi River basin.

8. Western Gulf of Mexico basins.

9. Colorado River basin.

10. The Great Basin.

11. Pacific slope basins in California.
Figure 2.--Map of the United States showing areas covered by the 18 annual volumes on surface-water supply. The area covered by this

report is shaded.
10 SURFACE WATER SUPPLY, 1957, PART 13

12. Pacific slope basins in Washington and upper Columbia River basin.

13. Snake River basin.

14. Pacific slope basins in Oregon and lower Columbia River basin.

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

the water resources of the United States may be purchased or consulted as follows:

1. Copies may be purchased from the Superintendent of Documents, Government Printing 

Office, Washington 25, D. C., who will, on application, furnish lists giving prices. A 

list of Geological Survey publications may also be obtained by applying to the Director, 

Geological Survey, Washington, D. C.

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

the United States.

3. Sets are available for consultation in the offices of the Water Resources Division 

of the Geological Survey. Addresses of the offices in the area covered by this report are 

given on page 2.

Early records of the flow of streams in the United States are published in the reports 

listed below. In many of these reports records for years earlier than those indicated 

have been included for some streams.

Streamflow data for the years 1644-19O1, In reports of the Geological Survey 

(A = Annual Report; B = Bulletin)

Report

10th A, pt. 2

B 131........

16th A, pt. 2 

B 140........

WSP 11.......

ISth A, pt. 4

WSP 16.......

19th A, pt. 4

WSF 35 to 39.

WSP 47 to 52.

22d A, pt. 4.

WSP 65, 66...

WSP 75.......

Character of data

Descriptive Information only.

Descriptive Information only.

monthly dlschsrge.

Deacrlptlona, measurements, ratlnga, and monthly discharge..

of the HlBBlaalppl River, and Mlaaourl River and trlbutarlea above Kanaaa River.

of the MlBBlaalppl River, except Missouri River and tributaries above Kansas River. 

Descriptions, measurements, ratings, and monthly discharge.

the Mississippi River, and Missouri River and tributaries.

the Mississippi River, except Missouri River and tributaries.

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

Year

18SS-93.

1893-94.

1896.

1S95-96.

1897.

1900.

1900.

1901.

Note. Records for all stations in Oregon are contained in WSF 37O, superseding all reports in 

this table for these stations.

Reports on surface-water supply containing records from 1899 to date for drainage 

basins in this report are listed below. The data for any particular gaging station will, 

in general, be found in the reports covering the years during which the station was maintained.

Numbers of water-supply papers containing results of stream measurements in Snake River basin,

1899-1957

Year

1899

1900

1901

1902

1903

1904

1905

1906 

1907-S

1909

1910

1911

WSP

38

51

66, 75

85

100

135

178

214 

252

272

292

312

Year

1912

1913

1914

1915

1916

1917

1918

1919-20 

1921

1922

1923

1924

WSF

332-B

362-B

393

413

443

463

483

513 

533

553

573

593

Year

1925

1926

1927

1928

1929

1930

1931

1932 

1933

1934

1935

1956

WSF

613

633

653

673

693

708

723

738 

753

768

793

S13

Year

1937

1938

1939

1940

1941

1942

1943

1944 

1945

1946

1947

1948

WSF

833

863

B83

903

933

963

983

1013 

1043

1063

1093

1123

Year

1949

1950

1951

1952

1953

1954

1955

1956 

1957

WSP

1153

1183

1217

1247

1287

1347

1397

1447 

1517

Mote. Records for all stations in Oregon through September 1910 are contained in WSP 370, 

sedlng all earlier reports for these stations.
HYDROLOGIC CONDITIONS 11

The records at most of the stations discussed In these reports extend over many years. 

Discharge measurements at many points other than regular gaging stations have been made 

each year and are published at the end of each report. The streams and points of measurement are listed In the same order as the streams and gaging stations In the body of the 

report. An Index of the records obtained before 1904 has been published in Water-Supply 

Paper 119.

A compilation of records for the area covered by this report through September 1950 has 

been published as Water-Supply Paper 1317. That report contains a summary of monthly and 

annual discharges for all previously published records as well as some records not contained in the annual series of water-supply papers. All records were reexamined and 

revised where warranted. Estimates of- discharge were made to fill short gaps whenever 

practical.

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

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

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

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

reports also contain other pertinent hydrologic information and analyses and compilations 

of data relating to earlier notable floods. The following list gives the numbers and 

titles of these reports:

Report

WSP 771: Floods in the United States, magnitude and frequency.

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

WSP 1080: Floods of May-June 1948 In Columbia River basin.

RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY 

The table below contains a list of gaging stations for the area covered by this report, 

at which records of discharge were collected during the water year October 1954 to September 195-7 by agencies other than the Geological Survey. The records of these stations are 

not contained in publications of the Geological Survey.

Records of discharge collected by agencies other than the Geological Survey

Stream

American Falls Reservoir, 

Inflow to.

Snake River tr Ibutarle s . . 

Teton basin tributaries..

Location

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

near Namorf, Oreg. 

Near Irwln, Idaho ................. 

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

5 miles northwest of North 

Powder, Oreg. and 65 miles upstream from mouth.

Period

1927-28, 

1932-57

1940-57* 

1934-57*

Collected by

Idaho Water District 36.

Idaho Water District 36. 

Do.

Service .

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

* Fragmentary.

Note. Of the records for the stations operated by the Oregon State engineer, those for 1931-36 

(including some to December 1936) are published In Bulletin 9 of the State engineer and those for 

1937-41 In Bulletin 10; those for 1942-57 have not been published. Records for the stations operated by Idaho Water District 36 are published In the annual reports of that organization. Records 

for some canals, not listed above, have been collected by the Oregon State engineer and the Bureau 

of Reclamation In connection with the water supply for Irrigation and other projects.

HYDROLOGIC CONDITIONS

Runoff was above median in most streams during the first three months of water year 1957 

in the area covered by this report. Runoff during January varied from excessive in the 

upper Snake River basin in Idaho to below median in Oregon and Washington. During the 

last four days in February, maximum or near maximum flows of record occurred in the Malheur, lower Powder, and Wallowa River basins in Oregon, and in the Weiser and Portneuf 

River and other low altitude basins in Idaho. Considerable damage occurred at Vale, Oreg.,

from the flooding Malheur River, which was near the previous maximum reached In 1910, 

even though reservoir capacity provided since the 1910 flood impounded all the runoff from 

about 30 percent of the basin. Runoff remained above median throughout the remainder of 

the water year except during April when cool weather retarded the flow in parts of Idaho 

and Oregon. During May and June extremely high stages in scattered parts of Snake River 

basin occurred as a result of rapid snowmelt and above average precipitation. Maxima of 

record occurred in Salt River near Smoot, Wyo., Swift Creek near Afton, Wyo., Imnaha River 

at Imnaha, Oreg., Lemhi River near Lemhi, Idaho, and flows were near maxima of record at
12 SURFACE WATER SUPPLY, 1957, PART 13

several points in Payette, Weiser, and Clearwater River basins. The peak of May 1957 in 

Snake River near Clarkston, Wash., which measures the runoff from 95 percent of the basin, 

has been exceeded only in 1894 and 1948. For two key gaging stations in the area covered 

by this report, a comparison of the monthly and annual mean discharge during the 1957 water 

year with the median discharge for the 25-year period 1921-45 is shown in figure 3 below.

30,000

25,000

.g 20,000

.5

| 15,000

g 10,000 

5000

 3

 S 30,000

20,000

Snake River near Heise, Idaho 

Drainage area, 5,752 sq mi.

Mar. April May June July Aug. Sept. The

year

Salmon River at Whitebird, Idaho 

Drainage area, 13,550 sq mi.

51,440

i rsn i h?SJ

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

year

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

Monthly mean discharge during water year 1957.

Figure 3. - Comparison of discharge at two key gaging stations during 1957 water year with 

median discharge for 25-year period.
GAGING-STATION RECORDS 13

SNAKE RIVER MAIN STEM 

Jackson Lake at Moran, Wyo.

Location. Lat 43 0 51', long 110°35', in sec. 18, T. 45 N., R. 114 W., near left end of 

spillway over dam on Snake River at Moran.

Drainage area. 824 sq mi.

Records available. July 1908 to September 1957 (1908-10 fragmentary).

Gage.--Electric tape gage read once daily. Datum of gage is 2.19 ft above mean sea level, 

unadjusted. Prior to June 1, 1941, staff gage at site 300 ft upstream at same datum.

Extremes. Maximum contents during year, 847,480 acre-ft July 9, 10 (elevation, 6,769.02 

ft); minimum, 42,500 acre-ft Dec. 24 (elevation, 6,732.45 ft).

1908-57: Maximum contents, 857,220 acre-ft June 23, 1937 (elevation, 6,769.40 ft); 

no usable contents on several days during period August to October 1919.

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

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

reservoir with a usable capacity of 380,000 acre-ft. The earth dam was raised in 1916, 

increasing the usable capacity to 790,000 acre-ft. In 1917, by dredging the outlet, 

the capacity was further increased to 847,000 acre-ft between elevations 6,730 ft (top 

of baffles to sluices) and 6,769 ft (top of spillway gates). Water is used for irrigation in Snake River Valley, Idaho. Figures given herein represent usable contents.

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

Revisions. WSP 1217: Drainage area.

Capacity table (elevation, In feet, and usable contents, In acre-ft)

6,732.0

6,735.0

6,740.0

6,745.0

6,750.0

34,580

88,070

182,520

284,450

392,900

6,755.0

6,760.0

6,765.0

6,770.0

506,550

624,360

746,280

872,600

Usable contents, In acre-feet, at 8 a.m., water year October 1956 to September 1957

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

18

Oct.

370,310

371,190 

372,300 

373,190 

374,070

375,180 

376,290 

377,170 

378,280 

378,940

380, 050 

381,380 

382,490 

383,380 

384,040

384,930 

385,590 

386,480 

387,360 

388,250

389,360 

390,240 

390,910 

392,240 

393,120

394,690 

396,250 

397,600 

398,490 

399,160 

400.730

6,750.35 

+31,080

Nov.

402,290 

402,960 

404,080 

404,970 

405,870

407,210 

408,330 

409,220 

410,120 

411,010

411,910 

413,020 

413,690 

415,260 

415,940

416.840

409,670 

400, 500 

391,130 

379,830

368,780 

358,030 

347,740 

337,100 

327,120

317,460 

307,590 

295, 900 

285,510 

274,820

6,744.54 

-125^10

Dec.

264,550

251,510 

239,160 

227,130 

215,400

203,940 

192,430 

182,520 

170,050 

158,430

148,080 

137,630 

128,000 

117,730 

107,140

97,230 

88,070 

79,580 

71,460 

63,950

57,180 

51,300 

46,380 

42.500 

42,860

43,380 

44,440 

46,200 

48,310 

50,070

6,732.95 

-223^20

Jan.

52.180 

53,080 

53,790 

54,500 

55,040

55,570 

56,460 

57,350 

58,250 

58,960

59,850 

60,920 

62,350 

63,950 

65,020

66,270 

67,160 

68,230 

69,120 

70,370

72,180 

73,620 

74,890 

76,150 

77,240

78,140 

79,220 

80,310 

81,570 

82, 660 

84,100

6,734.78 

+32,800

Feb.

85,550

87,350 

88,810 

90,090 

91,190

92,110 

93,020 

93,750 

94,850 

95, 950

96,690 

97,970 

99,070 

100,170 

101,450

102,730 

103,830 

104, 930 

106,210 

107,320

108,810 

110,300 

111,970 

113,460 

114,950

116,620 

118,290 

119,590

6,736.71 

+35,490

Mar.

120,710

122,200 

123,500 

124,610 

125,740

127,060 

128,000 

128,950 

129,890 

131,020

131,970 

133,390 

134,990 

136,310 

137,350

138,010 

138,760 

139,330 

139, 900 

140,460

141,030 

141,780 

142,540 

143,390 

144,240

145,200 

145,970 

146,540 

147,310 

148,270 

149.420

6,738.29 

+29,830

Apr.

150,760

151,910 

152,870 

153,830 

154,790

156,710 

157,670 

158,620 

159,580 

160,350

162,080 

163,420 

164,590 

165,570 

166,540

167,520 

168,490 

169,660 

171,030 

172,590

174,140 

175,700 

177,260 

178,630 

179,800

180,770 

181,750 

182,720 

183,910 

185,300

6,740.14 

+35,880

May

186,680

188, 070 

189,850 

193,810 

198,570

204,340 

210,570 

218,620 

225,700 

233,860

243,040 

255,440 

264,760 

272,930 

282,150

290,180 

297,810 

305,870 

315,530 

322,830

332,540 

339,060 

344,910 

350,570 

358,030

363,950 

371,410 

381,380 

393,570 

408,550 

424,960

6,751.43 

+239,660

June

442j820

458,740 

477,280 

499,160 

520,730

543,360 

565,440 

584,810 

603,580 

620,770

637,580 

652,520 

666,320 

680, 180 

690,420

699,950 

707,070 

713,700 

721,070 

728,980

740,100 

750,270 

757,740 

764,210 

771,440

777,700 

785,230 

793,760 

803,840 

811j930

6,767.62 

+386^70

July

817,740 

824,070 

830,180 

833,990 

835,520

837,560 

841,880 

847,000 

847,480

847,480

845,700 

842, 900 

839,590 

836,030 

.832,210

828,400 

824,070 

819,000 

814,960 

810,660

806,370 

800,560 

796,260 

791,250 

786,230

784,730 

784,480 

782,720 

781,220 

777,960 

m,940

6J66.11 

-37,990

Aug.

769,440

765,210 

759,230 

756,490 

751,760

747,280 

745,790 

745,790 

745,300 

744,550

744,800 

744,310 

740,840 

735,900 

731,450

727,740 

723,040 

718,860 

712,960 

709,770

705, 600 

701,180 

697,000 

691,640 

687,490

683,590 

680,420 

676,030 

671,890 

667,530

6,761.62 

-110^20

Sept.

660,030

656,150 

652,040 

649,620 

647,920

647,680 

646,960 

646,720 

646,480 

646,000

646,240 

646,480 

646,720 

643,110 

638,780

632,290 

625,560 

618,620 

616,230 

616,000

616,230 

616,000 

616,000 

616,000 

616,000

616,000 

615,760 

615,760 

615,760

615^760

§759.64 

-47,660

Calendar year 1956.................... * -254,360

Water year 1956-57 .................... t +246.110

t Elevation, In feet, at end of month. 

* Change In contents, In acre-feet.
14 SNAKE RIVER MAIN STEM

Snake River at Moran, Wyo.

Location. Lat 43°51', long 110°35', in sec. 18, T. 45 N. , R. 114 W. , on left bank at 

Moran, 1,000 ft downstream from Jackson Lake Dam.

Drainage area. 824 sq mi.

Records available. September 1903 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317. Prior to October 1910, published as South Fork Snake 

River at Moran.

Gage. Water-stage recorder. Datum of gage is 6,727.84 ft above mean sea level, unadjusted. Prior to July 26, 1915, staff gage at datum 4.00 ft lower; July 26, 1915, to 

June 13, 1917, staff gage at datum 5.00 ft lower, and June 14, 1917, to May 20, 1940, 

water-stage recorder at datum 5.00 ft lower, all at site ij miles downstream.

Average discharge. 54 years, 1,437 cfs (1,040,000 acre-ft per year).

Extremes. Maximum discharge observed during year, 7,120 cfs Dec. 4 (gage height, 8.40 ft); 

minimum, 12 cfs Nov. 14.

1903-57: Maximum discharge, 15,100 cfs June 12, 1918 (gage height, 10.41 ft, site 

and datum then in use); minimum daily, 2 cfs Nov. 21, 1944, to Apr. 14, 1945.

Flood during early June 1894 probably was considerably higher than that of June 12, 

1918.

Remarks. Records excellent except those for period of ice effect, which are fair. Flow 

regulated by Jackson Lake (see preceding page).

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

Revisions (water years) . WSP 1217: 1944(m); drainage area. WSP 1347: 1906-10.

Rating table, water year 1956-57, except period of Ice effect (gage 

height, In Teet, and discharge, In cubic feet per second)

2.0 

2.5

168

345

3.0 

3.5 

4.0 

5.0

580

860

1,210

2,110

6.0 

7.0 

8.0 

8.5

3,250

4,670

6,300

7,150

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Tota]

Mean

Ac-ft

Oct.

30 

29

27

26

26

26

26

26

21

17

16

15

15

14

14

14

14

14

14

14

13

14

16

16

16

16 

15

14

14

14 

13

559

18.0

1,110

Nov.

14 

15

16

17

17

16

14

14

14

12.

13

13

13

14

17

2,150

6,030

6,130

6,330

6,590

6,500

6,420

6,350

6,230

6,130

6,030 

5,940

6,400

6,450

6,370

90,270

3,009

179,000

Dec.

6,200 

6,950

6,830

7.120

6,910

6,740

6,690

6,440

6,180

5,960

6,250

5,990

5,670

6,120

5,960

5,570

*5,220

4,680

4,740

4,190

3,790

3,350

3,010

1,440

119

109 

76

70

70

70

SI

132,681

4,280

263,200

Jan.

> 50

1

f 35

'

1,460

47.1

2,900

Feb.

' 40

1 50

}-

f 80

)

-

1,490

53.2

2,960

Mar.

107 

107

107

107

107

143

258

258

265 265"

265

265

248

248

265

265

265

240

*220

254

174

76

82

84

82

70 

62

62

64

62

62

5,144

166

10,200

Apr.

f

60

62

60

57

60

57

51

39

39

32

27

26

24

21

21

21

21

20

21

21

21

20

19

18 

18

21

23

24

1,026

34.2

2,040

May

25 

28

29

35

38

39

39

35

33

29

29

41

2?

27

28

25

25

26

29

27

28

27

26

25

24

24 

24

24

24

25

34

901

29.1

1,790

June

36 

34

34

33

34

35

30

23

22

48

68

59

56

59

65

64

59

57

56

53

54

50

345

1,060

1,060

1,070 

1,080

1,080

1,540

2.180

10,444

348

20,720

July

2,400 

2,400

2,610

2,820

2,830

2,300

854

l.'STO

2,870

3,740

4,480

4,640

4,640

4,620

4,600

4,560

4,550

4,520

4,500

4,440

4,400

4,370

4,340

*4,320

2,770

933 

2,080

2,080

2,500

3,340

3,330

104,507

3,371

207,300

Aug.

5.320 

3,320

3,320

3,300

3,300

2,300

1,010

1,010

993

850

830

1,500

3,020

3,040

3,050

3,040

3,020

3,010

3,010

3,000

3,000

2,980

2,960

2,960

2,950

2,950

2,940

2,920

2,900

2,890

2,880

81,553

2,631

161,800

Sept.

2,870 

2,860

2,600

1,£00

848

756

690

500

258

157

204

237

1,000

3,050

3,580

5.920

3,890

3,290

1,400

*440

440

440

440

440

44O

440 

440

440

440

440

38,150

1,272

75,670

Calendar year 1956: Max 7,120 Mln 13 Mean 2,407 Ac-ft 1,747,000

Water year 1956-57: Max 7,120 Mln 13 Mean 1,283 Ac-ft 928,700

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Jan. 1 to Feb. 28. 

gage readings Nov. 25 to Mar. 18.

Discharge computed from staff-
PACIFIC CREEK BASIN 15

Pacific Creek near Moran, Wyo.

Location. Lat 43°51'00", long 110°31'20", in sec. 23, T. 45 N., R. 114 W., on left bank 

50 ft downstream from bridge on U. S. Highway 287, half a mile upstream from mouth, 

and 3 miles southeast of Moran.

Drainage area. 160 sq mi.

Records available.--July to November 1906 (gage heights only), July 1917 to September 

1918 (no winter records), September 1944 to September 1957.

Gage Water-stage recorder. Altitude of gage is 6,720 ft (from topographic map).

July 31 to Nov. 11, 1906, staff gage at site 0.4 mile downstream at different datum. 

July 20, 1917, to Sept. 30, 1918, staff gage at site 0.1 mile downstream at different 

datum.

Average discharge. 13 years (1944-57), 281 cfs (203,400 acre-ft per year).

Extremes. Maximum discharge during year, 2,950 cfs June 6 (gage height, 4.66 ft in gage 

well); maximum gage height recorded in gage well, 4.84 ft Mar. 6 (backwater from ice); 

minimum daily discharge, 28 cfs Jan. 30, Feb. 1.

1917-18, 1944-57: Maximum discharge, 3,470 cfs May 21, 1954; maximum gage height, 

5.00 ft in gage well, 5.60 ft from outside gage May 28, 1951; minimum daily discharge, 

24 cfs Nov. 29, 1952, Jan. 21, 1954, Feb. 20-23, 1955.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. No diversion or regulation.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

64 

6T

60

58

60

57

57

56

53

54

56

57

60

60

58

56

56

54

58

56

54

54

57

58

57

60

63

61

61 

50

51

1,777

57.3

0.358

0.41

3,520

Nov.

57 

49

43

48

54

57

57

53

56

*53

54

53

49

46

ii

45

48

48

52

46

42

45

47

50

46

49

47

45

48 

48

1,476

49.2

0.308

0.34

2,930

Dec.

48

48

50

53

54

50

*46

45

48

50

52

53

53

52

51

50

48

47

46

45

44

45

46

46

45

43

42

41

4T

41

41

1,464

47.2

0.295

0.34

2,900

Jan.

41 

41

42

40

39

39

40

41

39

36

36

37

38

36

33

31

31

31

32

33

34

35

34

33

31

30

32

30

*29

28

30

1,082

34.9

0.218

0.25

2,150

Feb.

28 

30

35

33

34

34

33

36

36

36

35

36

34

36

38

37

35

36

38

41

40

39

40

41

41

42

42

41

1,027

36.7

0.229

0.24

2,040

Mar.

41 

40

38

39

40

*41

40

44

43

41

41

43

45

44

42

44

48

45

44

48

49

48

45

45

46

50

50

50

47

48

48

1,377

44.4

0.278

0.32

2,730

Apr.

48

W

50

50

50

52

50

50

52

54

54

*54

54

58

66

67

74

74

74

78

84

91

94

93

84

80

78

93

120

159

2,135

71.2

0.445

0.50

4,230

May

182 250"

330

517

*692

758

813

870

950

1,160

1,130

1,160

1,070

1,170

1,100

1,000

1,020

1,100

1,180

1,210

994

841

795

813

870

1,070

1,290

1,500

1,640

1,780

Ij820

31,075

1,002

6.26

7.22

61,640

June

1,930 

2,350

2,420

2,320

2,580

2.640

2,450

2,200

1,990

2,130

*2,060

1,820

1,480

1,180

1,000

880

758

750

813

1,030

1,060

910

813

900

910

813

880

950

961

1,000

43,978

1,466

9.16

10.22

87,230

July

950 

983

900

813

708

660

645

564

530

498

461

444

405

389

*349

303

273

265

273

277

250

221

197

185

176

167

159

146

144

144

159

12,618

407

2.54

2.93

25,030

Aug.

m120

116

116

110

106

102

100

*94

93

96

94

85

87

106

93

85

84

84

80

78

85

78

75.

91

94

87

94

87

91

2,966

95.7

0.598

0.69

5,880

Sept.

102 

102

84

77

72

69

67

66

66

67

69

67

66

66

63

61

58

58

84

82

*75

74

72

70

66

64

61

60

60

58

2,106

70.2

0.439

0.49

4,180

Calendar year 1956: Max 3,130 Min 31 Mean 359 Cfsm 2.24 In. 30.49 Ac-ft 260,300

Water year 1956-57: Max 2,640 Min 28 Mean 282 Cfsm 1.76 In. 23.95 Ac-ft 204,500

Peak discharge (base. 1,300 cfs). May 20 (12:30 a.m.) 1,350 cfs (3.82 ft); June 6 (2 a.m.)

2,950 cfs (4.66 ft) .____________ ____ _______________________________________

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 2, 3, Nov. 14 to Mar. 30. No gage-height 

record Dec. 31 to Jan. 28, Jan. 30 to Mar. 5, Mar. 7 to Apr. 10; discharge estimated on basis of 

weather records, 2 discharge measurements, and records for nearby Snake River tributaries.
16 BUFFALO FORK BASIN

Buffalo Fork near Moran, Wyo.

Location. Lat 43°50'10", long 110°30'30", in sec. 26, T. 45 N., R. 114 W., on right bank 

30 ft below bridge on county road, half a mile upstream from mouth, 2-f miles downstream 

from Lava Creek, and 4 miles southeast of Moran.

Drainage area. 378 sq mi.

Records available. July to November 1906 (gage heights only), July 1917 to September 

1918 (no winter records), September 1944 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 6,720 ft (from topographic map). 

July 31 to Nov. 20, 1906, staff gage 300 ft upstream from mouth at different datum. 

July 9, 1917, to Sept. 30, 1918, staff gages at sites upstream within 500 ft of present site at different datums.

Average discharge. 13 years (1944-57), 618 cfs (447,400 acre-ft per year).

Extremes.--Maximum discharge during year, 4,460 cfs June 7 (gage height, 6.21 ft); minimum recorded, 103 cfs Nov. 3 (gage height, 1.34 ft), but was probably less during 

period of ice effect.

1917-18, 1944-57: Maximum discharge, 5,960 cfs June 27, 1954 (gage height, 6.71 ft); 

minimum, 78 cfs Nov. 20, 1953 (gage height, 0.88 ft), but may have been less during 

periods of ice effect.

Remarks.--Records fair. No diversion or regulation.

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

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

Ttotal

Mean

Cfsm

In.

Ac-ft

Caler

Oct.

248

24^

235

226

235

230

222

218

214

222

218

218

230

218

214

206

206

210

218

203

195

203

206

214

199

206

214

206

203

171

203

6,651

215

0.569

0.65

13,190

idar yeai

Nov.

203

152

146

184

184

206

230 222"

222

*222

199

191

181

171

157

152

218

203

185

170

160

160

162

163

163

160

155

150

150

148

5,349

178

0.471

0.53

10,610

Dec.

145

142

142

143

145

144

140

*137

130

130

140

145

150

150

150

150

148

145

142

140

140

140

138

135

135

130

130

135

135

135

135

4,346

140

0.370

0.43

8,620

Jan.

130

132

134

135

130

125

130

135

130

125

120

125

115

125

125

120

115

110

110

120

118

120

125

125

125

115

125

120

*115

105

110

3,794

122

0.323

0.37

7,530

Feb.

120

120

120

120

120

120

115

120

120

120

125

120

120

120

120

115

115

115

115

120

125

125

125

125

125

125

125

120

-

3,375

121

0.320

0.33

6,690

Mar.

120

115

115

115

115

 118

120

120

120

120

120

120

120

110

120

120

120

115

115

120

120

120

120

115

120

125

125

128

130

135

140

3,736

121

0.320

0.37

7,410

Apr.

140

Ho

140

140

140

145

148

150

150

150

*149

143

143

152

161

161

174

177

177

184

184

195

218

206

181

171

161

177

240

506

5,103

170

0.450

0.50

10,120

May

311

359

433

596

*788

818

886

,030

,020

,150

,220

,320

,090

,110

,110

972

886

920

981

1,090

999

844

718

659

681

856

1,170

1,550

1,800

1,990

2,250

51,527

1,017

2.69

3.10

62,530

June

2,420

2,900

3,240

3,560

3,850

4,090

4.280

3, 930

3,740

*3,540

3,440

3,400

3,140

2,620

2,160

1,840

1,610

1,520

1,560

1,940

2,300

1,900

1,650

1,750

2,200

1,960

2,350

2,900

3,220

5,550

82,540

2,751

7.28

8.12

163,700

July

5,540

5,610

5,310

5,000

2,450

2,480

2,640

2,140

2,200

2,230

2,140

2,340

2,140

2,140

2,060

1,870

1,740

1,600

1,940

1,710

1,510

1,340

1,260

1,090

1,040

954

963

945

886

911

J35_6_

59,015

1,904

5.04

5.81

117,100

Aug.

804

749

674

623

623

630

582

535

520

510

*500

489

476

464

445

470

445

427

416

421

598

392

421

392

581

404

400

400

400

405

410

15,206

491

1.30

1.50

30,160

Sept.

410

410

400

390

380

360

350

340

330

325

320

320

330

310

300

290

290

290

300

300

*291

291

291

281

271

262

248

244

240

235

9,399

313

0.828

0.92

18,640

- 1956: Max 4,710 Min 90 Mean 748 Cfsm 1.98 In. 26.96 Ac-ft 543,400

Water year 1956-57: Max 4,280 Hin 105 Mean 630 Cfsm 1.67 In. 22.63 Ac-ft 456,300

Peak discharge (base, 3,100 cfs). --June 7 (9 to 10 a.m.) 4,460 cfs (6.21 ft); July 2 (ll a.m. to

12 m. 3,930 cfs (5.88 ft).
GROS VENTRE RIVER BASIN

Gros Ventre River at Kelly, Wyo.

Location. Lat 43°37'20", long 110°37'30", in NW£ sec. 11, T. 42 N. , R. 115 W. , on pier 

at former bridge site on private road, 0.3 mile south of Kelly Post Office and 3 miles 

downstream from Turpin Creek.

Drainage area. 622 sq mi.

Records available. June to September 1918, October 1944 to September 1957.

Gage. Staff gage read once daily. Altitude of gage is 6,750 ft (from topographic map). 

June 16 to Sept. 30, 1918, staff gage at site 1 mile upstream at different datum. 

Oct. 1, 1944, to Aug. 8, 1949, wire-weight gage on bridge 25 ft downstream at present 

datum. Aug. 9, 1949, to June 25, 1953, staff gage 10 ft upstream at present datum. 

May 15 to July 23, 1954, May 22 to June 28, 1955, supplementary staff gage 300 ft 

downstream at datum 1.09 ft higher, and May 20, 1956, to Sept. 30, 1957, supplementary 

staff gage at site 300 ft downstream at datum 0.61 ft lower.

Average discharge. 13 years (1944-57), 484 cfs (350,400 acre-ft per year).

Extremes. Maximum discharge observed during year, 3,810 cfs June 8 (gage height, 4.65 ft, 

supplementary staff gage); minimum observed, 143 cfs Jan. 30 (gage height, 0.42 ft, 

supplementary gage).

1918, 1944-57: Maximum discharge observed, 6,220 cfs June 16, 1918 (gage height, 

9.95 ft, site and datum then in use); minimum observed, 101 cfs Mar. 12, 1956 (gage 

height, 0.27 ft).

Flood of May 18, 1927, was considerably higher than flood of June 16, 1918 (landslide about 2 miles upstream washed out and released about 60,000 acre-ft of impounded 

water) ; discharge not determined.

Remarks. Records good. Diversions above and below station for irrigation. 

Revisions. WSP 1043: Drainage area.

Rating table, water year 1956-57 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used June 2 to July 15)

0.3

.5

1.0 

1.5

124

168

220

314

545

2.0 

3.0 

4.0 

5.0

860

1,660

2,730

3,980

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

212

215

212

212

209

212

212

212

212

209

212

217

220

215

215

217

215

212

212

209

209

209

209

212

215

215

217

220

220

220 

215

6,622

214

0.344

0.40

13,130

Nov.

215

206

193

193

201

201

209

215

215

*212

215

215

215

212

204

215

215

217

196

180

173

T76

180

183

183

180

180

176

178

176

5,929

198

0.318

0.35

11,760

Dec.

173

170

170

173

176

176

176

*166

154

159

170

180

183

186

183

183

183

178

178

176

170

168

166

168

168

159

156

163

163

166 

163

5,303

171

0.275

0.32

10,520

Jan.

159

163

168

168

152

154

156

168

166

154

154

166

147

165

168

154

150

145

145

159

154

163

166

168

168

154

173

*159

152

143

154

4,915

159

0.256

0.29

9,750

Feb.

161

161

161

159

161

161

154

163

161

159

166

160

159

161

163

156

154

152

TBT

161

163

163

163

166

166

166

166

161

-

------

4,501

161

0.259

0.27

8,930

Mar.

156

150

156

159

*161

161

161

163

163

166

161

163

161

152

154

159

161

154

154

161

161

161

154

178

TeT

159

154

154

159

159

161

4,937

159

0.256

0.30

9,790

Apr.

166

166

166

166

161

168

168

163

163

166

*168

173

170

168

173

178

178

186

188

188

190

193

198

206

201

193

188

183

188

209

5,372

179

0.288

0.32

10,660

May

243

280

352

440

*629

762

874

,010

,080

,200

,290

,410

,370

,170

,090

951

881

881

881

1,090

986

847

717

653

672

750

881

1,140

1,470

1,750

2 , 060

29,810

962

1.55

1.78

59,130

June

2,140

2,730

2,990

3,380

3,540

3,500

3,720

5.810

3,260

*3,010

3,090

2,850

2,730

2,610

2,050

1,590

1,280

1,080

895

986

1,480

1,730

1,330

1,170

1,180

1,480

1,630

2,000

2,050

2,380

67,671

2,256

3.63

4.05

134,200

July

2,440

2,160

2,000

1,840

1,520

1,330

1,790

1,220

1,040

1,000

1,000

1,130

1,130

1,090

*1,040

986

867

782

724

1,040

944

782

691

617

575

540

545

480

465

460

460

32,688

1,054

1.69

1.95

64,840

Aug.

44O

431

422

394

377

360

360

352

314

300

287

*283

243

240

234

234

232

226

220

220

217

217

220

223

220

223

226

283

290

297

300

8,885

287

0.461

0.53

17,620

Sept.

300

300

294

283

271

258

252

249

243

240

237

237

234

237

234

234

229

226

232

237

246

249

*249

246

243

237

234

232

226

226

7,415

247

0.397

0.44

14,710

Calendar year 1956: Max 5,000 Min 101 Mean 639 Cfsm 1.O3 In. 13.99 Ac-ft 463,800

Water year 1956-57: Max 3,810 Min 143 Mean 504 Cfsm 0.810 In. n.00 Ac-ft 365,000

* Discharge measurement made on this day.
18 HOBACK RIVER BASIN

Hobaok River near Jackson, Wyo.

Location. Lat 43°17'55" ( long 110°40'10", in sec. 32, T. 39 N. , R. 115 W., on right bank 

at Camp Creek Camp, a quarter of a mile downstream from Willow Creek,, 4 miles upstream 

from mouth, and 13£ miles southeast of Jackson.

Drainage area. 564 sq mi.

Records available.--July 1917 to September 1918 (published as "near Cheney"), October

1944 to September 1957. Monthly discharge only for some periods, published in WSP 1317.

Gage.--Staff gage read once daily. Altitude of gage is 6,040 ft (from topographic map). 

July 9, 1917, to Sept. 30, 1918, at site 3f miles downstream at different datum. 

Nov. 6, 1944, to May 29, 1956, at site 300 ft upstream at datum 0.92 ft higher.

Average discharge.--13 years (1944-57), 717 cfs (519,100 acre-ft per year).

Extremes.--Maximum discharge during year, 4,500 cfs June 7 (gage height, 4.70 ft, from 

graph based on gage readings); minimum observed, 150 cfs Mar. 23 (gage height, 0.40 ft). 

1917-18, 1944-57: Maximum discharge observed, 6,160 cfs June 16, 1918 (gage height, 

13.46 ft, site and datum then in use); minimum observed, 90 cfs Dec. 18, 1946 (gage 

height, 1.70 ft, site and datum then in use).

Remarks. Records good. Small diversions above station for irrigation.

Rating table, water year 1956-57 (gage height, in feet, and 

discharge, in cubic feet per second)

1.0 

1.3 

1.6

150

242

361

525

740

2.0 

2.5 

3.0 

4.0 

4.7

1,110

1,640

2,220

3,460

4,390

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

308

355

300

296

285

293

293

300

293

304

308

308

308

277

277

285

270 

270

270

270

270

270

277

277

277

285

285

256

'542" 242

242

8,746

282

0.500

0.58

17,350

Nov.

249

249

249

256

256

263

263

256

266

*256

263

270

256

249

190

229

256 

249

203

184

172

T9CJ

209

216

190

203

184

190

209

203

6,878

229

0.406

0.45

13,640

Dec.

203

197

222

235

249

242

203

178

*T5T

229

242

249

256 25~2

235

246

235 

203

242

190

197

190

209

216

203

190

184

203

212

190 

197

6,680

215

0.381

0.44

13,250

Jan.

197

203

212

216

184

203

209

219

229

209

197

216

222

229

222

184

178 

167

184

197

209

216

222

222

216

17S

216

*216

222

184

216

6,394

206

0.365

0.42

12,680

Feb.

190

209

235 '2"59

216

197

190

216

222

209

197

203

190

209

216

190

167 

T72

184

209

203

197

190

216

216

203

209

197

_

5,661

202

0.358

0.37

11,230

Mar.

167

161

167

172

209

*167

190

212

253

197

161

203

184

172

156

190

197 

164

170

178

197

190

150

153

156

197

178

190

197

200 

206

5,634

182

0.323

0.37

11,170

Apr.

216

203

ITE

222

219

242

203

216

229

249

*249

242

232

249

293

316

348 

376

366

376

386

410

501

525

421

410

376

426

558

776

10,051

335

0.594

0.66

19,940

May

1,0~80~ 893

1,330

1,560

1,770

*1,910

1,930

2,000

2,220

2,320

2,340

2,290

2,170

1,980

1,960

1,910

1,770 

1,790

1,980

2,000

1,730

1,530

1,440

1,460

1,510

1,530

1,730

1,930

2,120

2,360 

2.390

56,933

1,837

3.26

3.75

112,900

June

2,690

3,170

3,560

4,090

4,160

4,230

4.290

3,660

*3,410

3,380

3,150

3,040

2,980

2,450

2,050

1,840

1.600 

1,646

1,670

2,030

2,200

1,930

1,670

1,790

2,200

2,220

2,270

2,570

2,800

2,990

81,730

2,724

4.83

5.39

162,100

July

2.780

2,630

2,460

2,200

1,980

1,930

1,830

1,680

1,660

1,710

1,770

*1,760

1,660

1,600

1,550

1,410

1,340 

1,200

1,560

1,410

1,250

1,110

1.050

1,020

958

893

875

803

821

839

794

46,533

1,501

2.66

3.07

92,300

Aug.

812

77S

692

660

646

639

625

611

570

544

532

*532

519

495

483

483

471 

460

438

448

438

443

432

421

410

443

421

432

432

432

432

16,172

522

0.926

1.07

32,080

Sept.

465 448"

438

438

438

395

395

386

386

386

386

386

410

361

352

343

352 

343

361

361

352

343

*334

334

334

325

316

325

325

325

11,143

371

0.658

0.73

22,100

Calendar year 1956: Max 5,800 Min 150 Mean 971 Cfsm 1.72 In. 23.41 Ac-ft 704,800

Water year 1956-57: Max 4,290 Min 150 Mean 719 Cfsm 1.27 In. 17.30 Ac-ft 520,700

Discharge measurement made on this day.
SNAKE RIVER MAIN STEM 19

Snake River above reservoir, near Alpine, Wyo.

Location. Lat 43°11 I 50", long 110°53 I 10", on right bank a quarter of a mile downstream 

from Wolf Creek, 7 miles upstream from Greys River, and 9 miles upstream from Alpine, 

Lincoln County.

Drainage area. 3,465 sq mi.

Records available. March 1937 to March 1939 (published as above Greys River near Alpine), 

July 1953 to September 1957.

Gage. Water-stage recorder. Datum of gage is 5,683.90 ft above mean sea level, unadjusted. Mar. 16, 1937, to Mar. 31, 1939, at site 6| miles downstream at different 

datum.

Average discharge. 5 years (1937-38, 1953-57), 4,782 cfs (3,462,000 acre-ft per year).

Extremes.--Maximum discharge during year, 19,000 cfs June 6 (gage height, 9.25 ft); minimum, 1,070 cfs Jan. 17 (gage height, 2.53 ft).

1937-39, 1953-57: Maximum discharge, 26,800 cfs June 28 1954 (gage height, 

11.68 ft); minimum, 740 cfs Nov. 16, 1955 (gage height, 2.19 ft).

Remarks. Records excellent except those for periods of ice effect or no gage-height

record, which are good. Plow partly regulated by Jackson Lake (see p. 13). Some diversions from tributaries above station.

Cooperation. Water-stage-recorder graph and five discharge measurements furnished by 

Bureau of Reclamation.

Rating tables, water year 1956-57, except periods of ice effect (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Nov. 17 to Dec. 20, May 17-28, Aug. 16 to Sept. 16)

Oct. 1 to May 16 May 17 to Sept. 30

2.6 1,140 5.0 4,780 5.5 1,870 6.0 7,620

3.0 1,540 6.0 7,220 5.6 3,260 7.0 10,800

3.5 3,120 6.5 8,600 4.0 2,920 8.0 14,300

4.0 2,900 5.0 5,000 9.2 18,800

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1 

2 

5

4

5

6 

7

8

9

10

11

12 

13

14

15

16

17

IS

19 

20

21

ZZ

23

24

25

26

27 

28

29 

50 

31

Total

Mean

Ac-ft

Oct.

1.970 

1,930 

1,890

*1,870

1,860

1,850 

1,870

1,850

1,820

1,840

1,830

1,800 

1,850

1,850

1,790

1,780

1,750

1,750

1,750 

1,720

1,680

1,670

1,720

1,770

1,720

1,770

1,850 

1,770

1,730 

1.660 

l)680

55,520

1,791

110,100

Nov.

*1,660 

1,600 

1,520

1,560

1,630

1,660 

1,680

1,650

1,620

1,620

1,620

1,620 

1,620

1,600

1,450

1,480

4,690

7,170

7,190 

7,520

7,570

7,650

7,570

7,490

7,440

7,330

7,250 

7,540

7.680 

7,656

137,320

4,344

252,500

Dec.

7,540 

7,930 

8,150

8,260

8,550

8,100 

7,840

6,850

6,770

7,460

7,710

7,540 

7,380

7,620

7,490

7,300

*6,820

6,350

6,170 

5,900

5,370

4,840

4,620

4,520

2,800

1,730

1,720 

1,700

1,690 

1,680 

1*6.60

179,640

5,795

356,300

Jan.

1, 650 

1 , 650 

1,650

1,650

1,600

1,550 

1,550

1,550

1,520

1,500

1,550

1,550 

1,550

1,550

1,550

1,450

1,500

1,500

1,500 

1,500

1,480

1,450

1,450

1,450

1,450

1,450

1,450 

1,400

1,400 

1.550

1,550

46,750

1,508

93,750

Feb.

1,350 

1,300 

1,300

1,300

1,300

1,300 

1,300

1,500

1,300

1,300

1,500

1,300 

1,300

1,500

1,500

1,520

1,550

1,540

1,290 

1,290

*1.250

1,230

1,350

1,350

1.440

1,430

1,420 

1,390

-

36,840

1,516

73,070

Mar.

1,510 

1,350 

1,280

1,360

1,290

1.220 

1,250

1,410

1,510

1.560

1,460

1,510 

1,580

1,550

1,540

1,400

1,450

1,450

1,420 

1,400

1,460

1,410

1,280

1,240

1,250

1,280

1,250 

1,340

1,300 

1,370 

1,440

41,960

1,554

83,350

Apr.

1,480 

1.450 

1,500

1,510

1,510

1,730 

1,570

1,510

*1,550

1,640

1,700

1,690 

1,660

1,680

1,780

1,840

1,870

1,950

1,920 

1,870

1,880

1,940

2,080

*2,050

2,000

2,000

2,000 

2,100

2,800 

5, 400

55,660

1,855

110,400

May

4.000 

5,000 

6,000

7,000

8,200

8,300 

8,400

8,300

7,800

8,000

8,100

8,200 

7,800

7,500

7,200

7,000

*6,860

7,000

7,500 

7,990

7,360

6,380

5,800

5,580

5,600

5,870

6,750 

7,990

9,350 

10,200

11.500

228,110

7,358

452,400

June

12,000 

13,700 

15,400

16,800

17,700

*1 8.700 

18] 600

17,500

15,700

15,000

15,000

14,600 

14,100

12,900

11,200

9,630

8,570

7,410

7.060 

7,810

9,550

9,500

8,180

8,340

9,590

9,810

*9,940 

11,300

12,200 

15,700

570,580

12,550

735,000

July

14.500 

14,300 

15,900

15,500

12,600

11,800 

10,700

9,500

9,680

10,500

11,700

12,600 

12,300

12,100

11,900

11,500

11,000

*10,600

10,700 

11,500

10,700

10,200

9,710

9,560

9,040

6,720

5.560 

6,130

6,070 

6,720

7,260

333,440

10,450

641,500

Aug.

7.090 

6)860 

6,720

6,560

6,450

6,380 

5,070

*4,050

3,880

3,680

5,420

3.560 

4,220

5,140

5,190

5,340

5,140

5,030

5,000 

5,000

4,880

4,860

4,860

4,770

4,680

4,880

4,880 

4,840

4,840 

4,860

4,840

156,660

5,054

310,700

Sept.

*4,860 

4,860 

4,770

4,280

5,150

2,760 

2,600

2,470

2,290

2,070

1,950

1.940 

1,940

2,690

4,470

5,240

5,500

5.530 4,660

5,220

2,360

2,230

*2,200

2,170

2,140

2,130

2,100 

3,030

3,060 

2,040

93,970

3,099

184,400

Calendar year 1956: Max 34,500 Min 950 Mean 6,672 Ac-ft 4,845,000

Water year 1956-57: Max 18,700 Min 1,220 Mean 4,700 Ac-ft 5,402,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 38 to Jan. 14, Jan. 17 to Feb. 16. No gageheight record Apr. 24 to May 16, Sept. 34-29) discharge estimated on basis of records for nearby 

stations.
20 GREYS RIVER BASIN

Greys River above reservoir, near Alpine, Wyo.

Location. Lat 43°08'50", long 110°09'20", in SW£ sec. 33, T. 37 N. , R. 118 W. , on left 

bank Z\ miles upstream from mouth and 3j miles southeast of Alpine.

Drainage area.--451 sq mi.

Records available.--July to September 1917, June to September 1918, March 1937 to March 

1939, October 1953 to September 1957. Published as Greys River near Alpine, Idaho, 

1917-18 and as Greys River near Alpine, Wyo., 1937-39.

Gage.--Water-stage recorder. Datum of gage is 5,620.33 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. July 6 to Sept. 30, 1917, and June 4 to 

Sept. 30, 1918, staff gage, and Mar. 17, 1937, to Mar. 31, 1939, water-stage recorder, 

at site three-quarters of a mile downstream at different datum.

Average discharge.--5 years (1937-38, 1953-57), 663 cfs (480,000 acre-ft per year).

Extremes. Maximum discharge during year, 4,290 cfs June 7 (gage height, 7.09 ft); minimum, 155 cfs Mar. 14 (gage height, 2.79 ft).

1917-18, 1937-39, 1953-57: Maximum discharge observed, 5,200 cfs June 14, 1918 

(gage height, 4.85 ft, former site and datum); minimum, 118 cfs Dec. 15, 1955 (gage 

height, 2.62 ft).

Remarks. Records excellent except those for periods of ice effect, which are fair. Less 

than 500 acres irrigated by diversions from Greys River and tributaries above station.

Cooperation. Water-stage-recorder graph and seven discharge measurements furnished by 

Bureau of Reclamation.

Rating table, water year 1956-57, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used May 4 to June 1)

2.9 

3.5 

4.0 

4.5

165

350

625

1,010

7.0

7.1

1,500

2,690

4,040

4,180

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

B

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Ac-ft

Oct.

350

342

338

338

334

330

330

330

330

346

 330

334

342

334

326

318

318

314

314

306

303

303

310

322

300

330

330

314

300

'303" 278 

9,997

322

0.714

0.82

19,830

Nov.

278

*252

246

278

282

286

278

269

266

269

272

269

269

263

232

245

250

245

232

196

226

238

229

229

229

229

232

230

230

230

7,479

249

0.552

0.62

14,830

Dec.

230

230

230

230

230

220

200

190

190

220

250

*284

280

260

240

230

230

225

225

220

215

215

210

210

210

210

210

210

210

210

210

6,934

224

0.497

0.57

13,750

Jan.

200

2OO

200

200

200

200

200

200

200

200

200

200

200

200

200

190

190

190

190

190

190

190

190

190

190

180

180

180

180

180

180

5,980

193

0.428

0.49

11,860

Feb.

180

180

180

180

180

190

190

190

190

190

190

190

190

190

190

190

190

190

190

190

190

190

195

200

200

210

215

*218

5,368

192

0.426

0.44

10, 650

Mar.

201

201

212

212

215

198

210

226

229

229

212

226

212

190

204

204

2O 7

204

207

215

229

221

204

204

221

221

212

221

235

243

249

6,674

215

0.477

0.55

13,240

Apr.

252

249

263

263

269

318

282

269

*278

306

318

303

300

334

370

4O5

455

470

445

440

445

500

660

632

*518

465

440

500

725 

906

12,380

413

0.916

1.02

24,560

May

994

1,270

1,450

1,850

2,350

2,350

2,440

2,420

2,130

2,170

2,300

2,360

2,080

1,990

1,880

1,800

*1,790

1,870

2,160

2,250

1,910

1,710

1,600

1,570

1,630

1,760

2,020

2,460

2,610

2,560

2,640

62,374

2,012

4.46

5.14

123,700

June

2,790

3,O8O

3,470

3,760

3,970

*4,010

4,110

3,830

3,590

3,420

3,030

2,820

3,140

2,680

2,300

2,000

1,760

1,660

1,780

2,070

2,250

1,910

1,730

1,800

1,920

2,080

*2,220

2,310

2,480

2,550

80,520

2,684

5.95

6.64

159,700

July

2,550

2,280

2,160

1,940

1,730

1,640

1,590

1,490

1,430

1,390

1,450

1,430

1,290

1,220

1,170

1,110

1,070

1,000

1,060

986

930

890

858

826

794

*770

740

702

695 

681

667

38,339

1,237

2.74

3.16

76,040

Aug.

"639 667

625

599

592

580

560

548

530

524

518

518

5O6

495

500

495

480

470

470

465

460

470

450

*440

435

465

450

445

440 

435

425

15,696

506

1.12

1.29

31,130

Sept.

445

420

405

395

390

380

380

370

375

380

375

370

375

370

360

360

355

360

400

375

365

355

*346

342

338

334

330

326

326 

326

11,028

368

0.816

0.91

21,870

Calendar year 1956: Max 4,850 Min 180 Mean 863 Cfsm 1.91 In. 26.04 Ac-ft 626,600

Water year 1956-57: Max 4,110 Min 180 Mean 720 Cfsm 1.6O In. 21.65 Ac-ft 521,200

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 16-18, Nov. 28 to Feb. 27 (no gage-height 

record Jan. 1-27, Feb. 11-20; discharge estimated on basis of 2 discharge measurements, weather 

records, and records for Salt River above reservoir, near Etna).
SALT RIVER BASIN 21

Salt River near Smoot, Wyo.

Location. Lat 42°36'20", long 110°55'10", in sec. 7, T. 30 N., R. 118 W., on left bank 

li miles south of Smoot, 1| miles upstream from Willow Creek, and 4 miles upstream 

from Cottonwood Creek.

Drainage area. 47.8 sq mi.

Records available. June 1932 to September 1957 (discontinued). Monthly discharge only 

for some periods , published in WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 6,600 ft (from topographic map). Prior 

to Apr. 11, 1934, chain gage, and Apr. 11 to Oct. 1, 1934, water-stage recorder, at 

same site at datum 1.00 ft higher.

Average discharge. 25 years, 36.2 cfs (26,230 acre-ft per year).

Extremes. Maximum discharge during year, 460 cfs June 7 (gage height, 3.83' ft); minimum 

not determined.

1932-57: Maximum discharge, that of June 7, 1957; no flow Jan. 25-28, 1949.

Remarks. Records good except those above 200 cfs, which are fair, and those for periods 

of ice effect or no gage-height record, which are poor. Diversions above station for 

irrigation of about 4,000 acres (for details on adjudication of diversions, see 

Remarks for this station in WSP 1217) .

Revisions. WSP 1123: Drainage area.

Discharge, In cubic feet per id, water year October 1956 to September 1957

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

Total

Mean

ftc-ft

Oct.

13

13

13

13

13

13

13

13

13

*13

12

13

14

13

13

12

12

12

12

12

12

12

13

13

13

14

14

13

12

12

12

395

12.7

783

Nov.

11

10

10

11

12

13

T3

12

12

12

12

12

*12

11

10

9.0

9.0

9.0

8.0

7.0

7.5

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8 «O

294.5

9.82

583

Dec.

8.0

sTo

8.0

8.0

8.0

7.0

6.0

5.0

4.0

4.5

5.0

5.0

5.0

5.0

4.5

4.0

3.5

3.2

" («)

> 3.0

140.7

4.54

279

Jan.

> 2.5

775

2.5

154

Feb.

> 4.0

-

112.0

4.0

222

Mar.

(*)

> 7.0

217.0

7.0

430

Apr.

> 8.O

*8.8

8.6

8.6

9.6

11.0

12

14

14

12

12

14

18

25

17

15

14

14

19

32

49

407.6

13.6

808

May

70

110

134

176

202

217

234

260

258

262

241

267

236

206

202

189

191

200

205

209

20O

185

175

*168

167

176

2OO

222

226

246

246

6,280

203

12,460

June

255

284

308

339

379

422

404

362

369

359

325

298

298

248

215

198

167

136

134

156

*171

149

136

134

156

178

.191

215

231

236

7,453

248

14,780

July

211

209

193

162

149

145

138

134

124

122

134

134

128

124

114

102

96

94

94

86

78

72

66

63

*61

51

46

41

37

34

3_2

3,274

106

6,490

Aug.

28

25

25

20

17

17

16

15

15

14

15

16

15

14

14

13

12

T3

13

13

14

14

14

14

14

15

16

15

16

17

17

496

16.0

984

Sept.

17

T6

16

15

15

15

15

15

15

15

*16

16

16

14

14

14

14

14

16

14

14

14

14

14

13

12

12

12

11

T2

430

14.3

853

Calendar year 1956: Max 376 Mln - Mean 53.0 Ac-ft 38,50O

Water year 1956-57: Max 422 Mln - Mean 53.6 Ac-ft 38,830
22 SALT RIVER BASIN

Cottonwood Creek near Smoot, Wyo.

Location. Lat 42°36'40", long 110°53'30", in sec. 4, T. 30 N. , R. 118 W., on right bank 

0.3 mile upstream from headgate of highest diversion, l£ miles downstream from Porcupine Creek, ij miles southeast of Smoot, and 4f miles upstream from mouth.

Drainage area. 26.3 sq mi.

Records available.--October 1932 to September 1957 (discontinued).

Gage. Water-stage recorder. Altitude of gage is 6,750 ft (from topographic map). Prior 

to Apr. 8, 1934, staff gage at site a quarter of a mile downstream at different datum.

Average discharge. 25 years, 44.5 cfs (32,240 acre-ft per year).

Extremes. Maximum discharge during year, 318 cfs June 6 (gage height, 2.81 ft); maximum 

gage height, 4.12 ft June 10 (backwater from debris): minimum daily discharge, 13 cfs 

Mar. 11.

1932-57: Maximum discharge, 438 cfs June 2, 1956; maximum gage height, that of 

June 10, 1957; minimum discharge, 6.4 cfs Mar. 11, 1948; minimum gage height, 0.95 ft 

Jan. 19, 1950.

Remarks. Records good except those after June 7 which are fair, and those for periods 

of ice effect or no gage-height record, which are poor. No diversion above station. 

Flow regulated by Cottonwood Lake.

Revisions (water years).--WSP 933: Drainage area. WSP 1153: 1933.

Rating table, water year 1956-57, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used May 17 to Sept. 5)

1.2

1.3 

1.5 

1.7

2.0

2.5 

3.0

96

210

345

54

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

28

28

28

27

27

27

27

27

27

*27

26

26

26

25

25

24

24

24

24

23

23

23

23

23

23

23

23

23

23

22

23

772

24.9

1,530

Nov.

22

2T

21

21

21

22

21

20

20

20

20

20

*20

20

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

i§.

592

19.7

1,170

Dec.

18

18

18

18

11

19

18

18

18

18

19

19

19

19

19

19

19

18

*18

18

18

18

18

18

18

17

17

17

17

16

T6

559

18.0

1,110

Jan.

16

16

17

16

b!6

16

16

16

16

16

16

16

16

16

16

15

b!4

b!4

b!4

b!4

15

15

15

15

15

14,

14

14

*14

15

14

472

15.2

936

Feb.

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

15

15

15

14

14

-

395

14.1

783

Mar.

14

T4

14

14

14

14

*14

14

14

14

13

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

433

14.0

859

Apr.

15

T5

15

15

15

15

15

15

15

15

*15

15

16

16

16

17

18

18

17

18

18

20

20

20

19

18

17

19

23

25

515

17.2

1,020

May

28

3T

40

48

62

67

72

76

79

79

85

90

88

90

88

83

86

86

96

102

94

90

*85

80

79

85

94

109

121

134

146

2,597

83.8

5,150

June

168

192

205

232

265

262

303

270

260

250

230

240

220

205

190

185

170

150

145

TTO

*200

180

165

190

202

190

202

215

242

278

6,376

213

12,650

July

230

228

248

280

265

230

225

208

190

185

195

162

155

150

155

150

146

140

146

143

135

130

120

110

*105

102

94

86

85

82

29

4,959

160

9,840

Aug.

79

73

73

72

66

62

61

59

59

58

56

55

53

53

53

53

52

50

48

50

50

46

47

47

45

46

45

44

43

43

43

1,686

54.4

3,340

Sept.

42

4T

39

39

38

38

37

37

37

37

*36

35

35

35

34

33

34

36

36

35

33

31

31

30

29

28

29

28

29

29

1,031

34.4

2,040

Calendar year 1956: Max 360 Mln 10 Mean 51.0 Ac-ft 37,040

Water year 1956-57: Max 3O3 Mln 13 Mean 55.9 Ac-ft 40,430

Peak discharge (base, 140 cfs). June 6 (11:50 p.m.) 518 efs (2.81 ft).___________________

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Jan. 21-29, Mar. 13 to Apr. 11; discharge estimated on basis of 

2 discharge measurements, weather records, and recorded range in stage.
SALT RIVER BASIN 23

Swift Creek near Afton, Wyo.

Location.--Lat 42°43'30", long 110°54'00", in SE£ sec. 29, T. 32 N., R. 118 W., on right 

bank 1 mile upstream from mouth of canyon, If miles east of Afton, and 4J- miles 

upstream from mouth.

Drainage area. 27.4 sq mi.

Records available.--October 1942 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 6,420 ft (from topographic map). 

Average discharge.--15 years, 90.2 cfs (65,350 acre-ft per year).

Extremes. Maximum discharge during year, 775 cfs June 30 (gage height, 3.52 ft); minimum 

 aaTTy, 32 cfs Feb. 18, Mar. 6, 14.

1942-57: Maximum discharge, that of June 30, 1957; minimum daily, 27 cfs Feb. 1, 

1956.

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

Diversions above station for powerplant above station and municipal use below (for 

details on adjudication of diversions, see Remarks for this station in WSP 1217).

Rating table, water year 1958-57, (gage height, In feet, 

and discharge, In cubic feet per second)

1.9

2.0 

2.2

2.5 

3.0 

3.5

183

428

735

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

55 

53

59

57

53

55

53

55

53

*53

48

49

53

49

49

49

46

46

46

46

44

5T

51

48

48

49

48

49

49

48

48

1,560

50.3

3,090

Nov.

48 

Iff

48

48

48

48

43

48

48

48

48

48

*46

44

IT

44

44

44

44

44

46

46

46

46

44

46

46

46

46

46

1,388

46.3

2,750

Dec.

46 

42

44

44

44

44

42

37

To

44

45

44

43

42

39

38

37

37

*37

38

43

43

43

42

38

42

42

41

41

41

41

1,284

41.4

2,550

Calendar year 1956: Max 505

Jan.

42 

IT

42

41

38

39

38

39

38

37

42

41

41

41

39

35

35

36

36

36

38

36

36

38

37

36

36

36

*35

33

34

1,172

37.8

2,320

Feb.

35

37

55

34

33

34

35

34

35

36

34

35

34

36

37

35

33

32

3T

36

36

36

36

36

36

35

34

33

-

976

34.9

1,940

Min 27

Mar.

33 

33

35

36

34

32

»33

35

37

35

34

35

34

32

36

36

37

37

38

39

39

37

35

36

38

38

36

36

41

42 

T?T 42

1,121

36.2

2,220

Apr.

39 

38

38

38

37_

38

37

37

37

37

37

»37

37

37

40

42

42

40

40

40

40

40

43

42

42

38

38

40

43

48

1,182

39.4

2,340

May

51 

57

69

82

96

106

114

119

114

122

132

132

125

128

116

111

111

111

112

114

113

112

*112

111

111

119

144

169

203

236

283^

3,835

124

7,610

June

329 

362

390

412

452

560

554

483

*458

440

356

378

362

313

264

250

232

228

?BT

288

*283

288

264

283

313

368

482

518

644

^95

11,508

384

22,830

July

602 

608

554

518

417

378

351

313

318

308

318

303

288

303

298

288

273

259

259

259

246

236

223

207

*191

176

172

165

158

154

144

9,287

300

18,420

Aug.

rM

132

125

125

125

122

116

111

108

108

106

106

104

98

98

98

96

96

94

91

89

87

34

84

87

87

82

80

80

78

3,179

103

6,310

Sept.

76 

75

73

73

71

73

71

71

69

69

*71

71

69

67

67

67

65

67

67

63

61

6T

61

61

61

65

63

63

63

63

2,018

67.3

4,000

Mean 95.1 Ac-ft 68,840

Water year 1956-57: Max 695 Min 32 Mean 106 Ac-ft 76,380

Peak discharge (base, 390 cfs).--June 6 (12 p.m.) 644 cfs (3.36 ft); June 30 (8 a.m.) 775 cfs 

(3.52 ft) .

* Discharge measurement made on this day.

Note. No gage-height record Dec. 8-19, Dec. 28 to Apr. 12, May 18-23; discharge estimated on 

basis of 5 discharge measurements, weather records, and records for nearby stations.
24 SALT RIVER BASIN

Salt River above reservoir, near Etna, Wyo.

Location.--Lab 43°04'50", long 111°02'15", in NE£ sec. 28, T. 36 N., R. 119 W., on right 

bank 3| miles northwest of Etna and 8 miles upstream from mouth.

Drainage area. 829 sq mi.

Records available. July to September 1917, June to September 1918, October 1953 to September 1957.Published as Salt River near Alpine, Idaho, 1917-18.

Gage. Water-stage recorder. Datum of gage is 5,675.78 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. July 1 to Sept. 30, 1917, and June 5 to 

Sept. 30, 1918, staff gage at site 5 miles downstream at different datum.

Extremes. Maximum discharge during year, 2,320 cfs May 21 (gage height, 4.55 ft); minimum, 400 cfs Jan. 31 (gage height, 2.14 ft).

1917-18, 1953-57: Maximum discharge, 2,420 cfs Apr. 24, 1956 (gage height, 

4.68 ft); minimum, 281 cfs Feb. 4, 1956 (gage height, 1.81 ft).

Remarks.--Records excellent. Diversions above station for power developments, industry, 

municipal supply, and Irrigation of about 66,000 acres (for details on adjudication of 

diversions, see Remarks for this station in WSP 1347).

Cooperation. Water-stage-recorder graph and nine discharge measurements furnished by 

Bureau of Reclamation.

Rating table, water year 1956-57, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.1 

2.5 

3.0

380

610

995

4.0 

4.6

1,820

2,350

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Caler

Oct.

655 

648

640

632

625

'518 618

618

625

632

632

632

648

640

632

640

632

*625

625

625

625

625

a625

a630

a635

64O

648

640

662

708

19,788

638

39,250

Nov.

700 

685

678

670

662

648

655

655

655

655

648

640

648

655

*632

a640

648

648

648

618

604

597

597

597

597

578

584 

578

571

545

18,936

631

37,560

Dec.

564

a560

a560

558

578

a570

a560

a540

a520

a530

533

564

571

584

564

558

a555

a550

a550

*545

515

WT

521

539

539

521

515 

533

527

521

515

16,887

545

33,490

Jan.

509

497

485

503

485

468

480

491

503

474

485

527

527

533

533

509

b48O

b475

b475

b480

b480

480

*474

480

474

458

441 

452

441

425

436

14,960

483

29,670

Feb.

452 

463

463

458

458

441

441

458

463

452

452

446

441

441

436

436

436

436

436

441

436

430

441

452

480

485

491 

*497

-

12,662

452

£5,110

idar year 1956: Max 2,380 Min 294

Mar.

485

474

474

468

468

458

458

463

474

491

480

485

474

468

463

463

468

463

463

468

468

*458

441

441

446

452

436 

1T6

441

458

480

14,365

463

28,490

Apr.

503 

497

503

509

521

597

604

590

618

655

692

722

730

782

805

859

907

979

931

891

875

907

963

979

*883

835

798 

812

899

IjCOO

22,856

762

45,330

May

1,060 

1,210

1,330

1,430

1,640

1,640

1,660

1,710

1,660

1,700

1,670

1,920

2,110

2,040

2,160

2,020

1,960

1,980

2,030

2,190

2,300

2,250

2,120

2,070

2,000

1,980

2,000

2,020

*2,050

2,040

2,030

57,980

1,870

115,000

June

2,050 

2,070

2,080

2,100

2,100

2,120

2,080

2,010

1,910

1,880

1,830

1,720

1,710

1,630

1,550

1,540

1,520

1,400

1,320

1,280

1,320

1,260

1,190

1,120

1,060

1,050

*1,040 

1,040

1,070

1,140

47,190

1,573

93,600

July

1,160 

1,150

1,160

1,160

1,130

1,110

1,100

1,080

1,060

1,050

1,070

1,090

1,120

1,120

1,040

1,030

1,010

1,010

1,030

1,020

987

963

947

939

907

*907

907 

899

907

907

8J39

31,869

1,028

63,210

Aug.

899 

875

859

859

867

835

835

820

805

798

798

790

775

775

775

768

760

738

730

738

738

752

745

*745

745

760

760 

768

768

775

798

24,453

789

48,500

Sept.

798 

805

805

812

805

798

790

782

775

768

760

760

760

752

760

760

745

745

775

775

775

768

760

*752

745

738

722

715

715

22,928

764

45,480

Mean 871 Ac-ft 632,400

Water year 1956-57: Max 2,300 Min 425 Mean 835 Ac-ft 604,700

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

stations.

b Stage-discharge relation affected by ice.
McCOY CREEK BASIN 25

McCoy Creek above reservoir, near Alpine, Idaho

SS", in SW£ sec. 6, T. 33., R. 46 E. , on left bank 

miles west of Alpine.

Location. Lat 43 0 10'50", long 111°C 

li miles upstream from mouth and

Drainage area.--108 sq mi.

Records available. July to September 1917, June to September 1918, May to July 1934, 

September 1953 to September 1957. Monthly discharge only for some periods, published 

in WSP 1317. Published as McCoy Creek near Alpine, Idaho, 1917-18 and as McCoy Creek 

near Alpine, Wyo., 1934.

Gage. Water-stage recorder. Datum of gage is 5,635.4 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947 (levels partly by Bureau of Reclamation). 

July 15 to Sept. 30, 1917, staff gage, June 25 to Sept. 30, 1918, water-stage recorder, 

and May 1 to July 31, 1934, staff gage, at sites 1 mile downstream at different datum.

Extremes.--Maximum discharge during year, 1,070 cfs May 13 (gage height, 5.73 ft); minimum, 10 cfs Feb. 15 (gage height, 1.33 ft).

1917-18, 1934, 1953-57: Maximum discharge, 1,130 cfs Apr. 21, 1956 (gage height, 

5.72 ft); minimum, 1 cfs for many days during 1934.

Remarks. Records good except those for periods of ice effect, which are fair. No diversion above station.

Cooperation. Water-stage-recorder graph and 13 discharge measurements furnished by 

Bureau of Reclamation.

Rating table, water year 1956-57, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Apr. 29 to June 23, Aug. 24-30)

1.4 

1.6 

1.8 

2.0 

2.5

3.0 

3.5 

4.0 

5.0 

5.2

175

305

467

833

911

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

15

15

14

14

*14

14

14

15

15

17

16

16

17

17

16

16

16

16

17

17

17

16

17

19

18

22

26

?3

*20 

17

21

527

17.0

0.157

0.18

1,050

Nov.

19

18

18

18

19

20

T9" 21

18

18

19

19

19

17

*15

16

17

17

15

14

14

14

15

15

15

15

15

15

15 

15

504

16.8

0.156

0.17

1,000

Dec.

15

15

15

15

15

15

14

13

13

13

14

14

15

15

15

15

15

*15

15

15

15

15

15

14

14

14

14

14

14 

13

13

446

14.4

0.133

0.15

8S5

Jan.

13

13

13

13

13

12

12

12

13

13

13

13

14

14

14

13

12

11

11

11

11

11

11

*11

11

11

11

11

11 

11

11

374

12.1

0.112

0.13

742

Feb.

12

12

12

12

12

13

13

13

13

14

14

15

15

15

14

13

13

12

13

14

14

14

15

16

18

19

21

20

-

401

14.3

0.132

0.14

795

Mar.

18

16

16

17

17

16

16

18

22

24

22

21

19 ' 17

17

17

17

17

18

19

21

*19

17

16

18

19

18

18

20 

24

££.

582

18.8

0.174

0.20

1,150

Apr.

29

29

37

35

37

52

43

40

49

62

64

63

72

91

104

118

132

153

128

133

147

18S

265

251

167

141

133

182

324 

 390 

3,659

122

1.13

1.26

7,260

May

443

554

609

709

746

694

672

616

*572

628

561

876

15T8~

694

687

590

554

547

646

698

679

613

561

*529

487

474

501

526

522

494

477

18,777

606

5.61

6.47

37,240

June

460

457

460

443

423

»400

362

327

290

290

259

245

232

207

214

195

175

161

153

163

177

155

147

143

137

135

135

133

133 

133

7,344

245

2.27

2.53

14,570

July

126

125

120

115

110

*106

102

99

95

93

95

90

85

81

75

72

70

69

66

62

58

58

54

52

50

*49

48

45

48 

47

44

2,409

77.7

0.719

0.83

4,780

Aug.

43

40

39

39

37

35

34

33

33

31

31

35

33

31

32

37

31

29

30

31

33

41

36

33

*32

45

3S

34

34 

33

37

1,078

34.8

0.322

0.37

2,140

Sept.

33

29

28

26

25

24

23

22

22

23

23

23

22

21

21

21

20

20

26

25

23

22

21

*21

20

20

19

19

19 

19

680

22.7

0.210

0.23

1,350

Calendar year 1956: Max 927 Mln 13 Mean 126 Cfsm 1.17 In. 15.87 Ac-ft 91,46O

Water year 1956-57: Max 876 Mln 11 Mean 1O1 Cfsm 0.935 In. 12.66 Ac-ft 72,960

* Discharge measurement made on this day.

Hote. Stage-discharge relation affected by Ice Nov. 2-4, Nov. 14 to Feb. 13, Feb. 16-20, Feb. 28 

to Mar. 3, Mar. 6, 11, 14, 15, 23, 24.

503667 O - 59 -3
26 INDIAN CREEK BASIN

Indian Creek above reservoir, near Alpine, Idaho

Location.--Lat 43°15'35", long 111°04'00", near center of sec. 9, T. 2 S., R. 46 E., on 

right bank a quarter of a mile downstream from forks of creek, 3 miles upstream from 

mouth, and 5f miles north of Alpine.

Drainage area. 36.8 sq mi.

Records available. July to September 1917, June to September 1918, August 1953 to September 1957.Published as Indian Creek near Blowout 1917-18.

Gage. Water-stage recorder. Altitude of gage is 5,820 ft (from topographic map). 

July 14 to Sept. 30, 1917, and June 4 to Sept. 21, 1918, staff gage at site 3 miles 

downstream at different datum.

Extremes.--Maximum discharge during year, 233 cfs June 6 (gage height, 3.74 ft); no flow 

1'or many days.

1917-18, 1953-57: Maximum discharge observed, 350 cfs June 14, 1918; no flow for 

many days.

Remarks. Records good. One small diversion from North Fork for irrigation.

Cooperation. Water-stage-recorder chart and four discharge measurements furnished by 

Bureau of Reclamation.

Rating table, water year 1956-57 (gage height, In feet, and discharge,

In cubic feet per second) 

(ShiftIng-control method used Oct. 9-29, Aug. 6-11)

1.0

1.2

1.3 

1.5 

1.7

2.0 

2.5

3.0 

3.5

28

65

122

195

13

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

0

0

0

0

0

o

0

o

0

^

*o

i

i

i

i

i

i

0

0

0

0

0

1

0

0

11

1

o

0

0

11

0.4

22

Nov.

0

0

0

Dec.

0

O

0

Calendar year 1956: Max 268

Jan.

0

0

0

Feb.

-

0

0

0

Mln 0

Mar.

O

0

0

Mes

Apr.

0

0

0

May

ao

aO

aO

a2

a4

a6

alo

a!5

*20

22

24

24

20

19

18

18

18

20

22

23

19

16

15

16

16

19

24

32

44

54

65

605

19.5

1,200

June

75

90

112

136

152

*189

192

166

149

146

137

133

122

97

77

57

45

44

50

73

90

82

76

85

93

92

*101

118

125

117

3,221

107

6,390

July

112

T09

101

87

7S

77

68

60

57

53

52

46

42

39

35

32

29

*28

26

24

20

18

16

16

14

12

6

5

S

8

6

1,282

41.4

2,540

Aug.

4

3

2

1

1

0

V

o

*0

0

0

o

0

0

0

o

0

o

0

0

0

0

o

0

0

0

o

0

0

0

0

11

0.4

22

Sept.

0

O

0

in 21.8 Ac-ft 15,850

Water year 1956-57: Max 192 Min o Mean 14.1 Ac-ft 10,170

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby stations.
ELK CREEK BASIN 27

Elk Creek above reservoir, near Irwin, Idaho

Location.--Lat 43°19 1 25", long lllooeUO" in NW£ sec. 19, T. IS., R. 46 E., on right 

bank 2f miles upstream from mouth and 11 miles southeast of Irwin.

Drainage area. 59.2 sq mi.

Records available. July to September 1917, June to September 1918, April to July 1934, 

August 1953 to September 1957. Published as Big Elk Creek near Blowout 1917-18 and 

as Elk Creek near Irwin, 1934.

Gage. Water-stage recorder. Altitude of gage is 5,640 ft (from topographic map). 

July 1917 to September 1918, April to July 1934, staff gage at site 2£ miles downstream at different datum.

Extremes.--Maximum discharge during year, 578 cfs June 5 (gage height, 3.94 ft); minimum 

recorded, 11 cfs Jan. 15.

1917-18, 1934, 1953-57; Maximum discharge observed, 870 cfs June 15, 1918; minimum, 

5 cfs Dec. 15, 1953.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair.

Cooperation. Water-stage-recorder graph and nine discharge measurements furnished by 

Bureau of Reclamation.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac -ft

Oct.

46

46

45

45

44

44

44

44

43

44

44

44

43

42

42

42

41

*41

40

40

40

39

40

40

40

43

41

40

40

39 

47)

1,306

42.1

0.711

0.82

2,590

Nov.

40

36

37

37

37

37

37

37

37

37

38

38

37

 34

36

37

37

37

36

33

32

32

32

32

32

32

32

32

32

32

1,055

35.2

0.595

0.66

2,090

Dec.

32

32

32

32

32

*32

32

31

30

30

30

30

30

30

30

30

30

30

30

29

29

28

28

28

28

28

28

28

28

28 

28

923

29.8

0.503

0.58

1,830

Jan.

27

2?

27

27

27

26

26

26

25

25

25

25

25

24

*24

24

23

23

24

24

24

24

24

24

24

23

23

23

23

23 

23

762

24.6

0.416

0.48

1,510

Feb.

23

?3

23

23

23

23

23

23

24 sr

24

24

*24

24

24

24

23

23

23

23

23

23

23

23

23

23

23

23

652

23.3

0.394

0.41

1,290

Mar.

22

2?

22

22

22

21

21

21

21

21

21

21

21

20

20

20

20

20

*20

20

20

19

T5

19

19

19

19

19

19

20 

20

630

20.3

0.343

0.40

1,250

Apr.

20

27J

21

20

21

22

22

21

22

22

22

22

22

23

24

26

28

28

28

29

30

33

37

36

*33

31

31

34

44

53

830

27.7

0.468

0.52

1,650

May

64

5T

112

150

184

189

195

186

176

201

203

193

172

159

150

148

148

 151

167

157

128

113

113

117

118

138

206

296

351

342 

318

5,436

175

2.96

3.41

10,780

June

333

377

425

453

513

537

**52

432

398

364

343

316

284

229

197

164

146

141

TBT

191

221

188

170

189

193

186

191

197

217

217

8,455

282

4.76

5.31

16,770

July

198

1ST

170

151

 151

161

153

145

143

138

135

132

128

124

120

116

110

110

109

105

100

97

93

91

89

88

87

85

87

* 85 

33

3,775

122

2.06

2.38

7,490

Aug.

8180-

78

78

77

76

74

73

72

71

72

73

71

70

70

68

68

68

68

68

68

72

78

72

71

*80

76

80

80

76 

75

2,284

73.7

1.24

1.43

4,530

Sept.

72

70

68

65

63

62

60

58

56

55

*53

52

51

51

51

51

50

51

51

50

50

49

49

49

49

48

48

47

47

47

1,623

54.1

0.914

1.02

3,220

Calendar year 1956: Max 568 Min 11 Mean 97.2 Cfsm 1.64 In. 22.36 Ac-ft 70,580

Water year 1956-57: Max 537 Mln 19 Mean 76.0 Cfsm 1.28 In. 17.42 Ac -ft 55,000
28 BEAR CREEK BASIN

Bear Creek above reservoir, near Irwin, Idaho

Location. Lat 43°16'45", long 111°13<15" in SE£ sec. 31, T. IS., R. 45 E., on left bank 

a quarter of a mile downstream from Elk Creek, 4 miles upstream from mouth, and 9 miles 

southeast of Irwin.

Drainage area. 77.1 sq mi.

Records available.--July to September 1917, June to September 1918, May to July 1934, 

April to October 1935, April to October 1936, August 1953 to September 1957. Published as Bear Creek near Irwin 1917-18, 1934-36.

Gage. Water-stage recorder. Altitude of gage is 5,640 ft (from topographic map). Prior 

to Nov. 1, 1936, staff gage at site 4 miles downstream at different datum.

Extremes. Maximum discharge during year, 621 cfs May 12 (gage height, 5.07 ft); minimum, 

15 cfs Feb. 13 (gage height, 2.48 ft).

1917-18, 1934-36, 1953-57: Maximum discharge observed, 784 cfs May 5, 1936; minimum, about 1.0 cfs Jan. 20, 1954 (gage height, 1.08 ft), result of freezeup. "

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. No diversion above station.

Cooperation. Water-stage recorder graph and 12 discharge measurements furnished by 

Bureau of Reclamation.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Z6

27

28

29

30

31

Total

Mean

Cf sm

In.

Ac-ft

Oct.

28

28

28

28

*28

27

27

27

31

31

28

28

28

28

28

28

28

28

28

28

28

28

29

29

29

33

3?

29

*28

28

29

885

28.5

0.370

0.43

1,760

Nov.

28

2T

26

26

26

27

27

27

26

26

26

26

26

25

24

25

26

26

25

24

23

22.

22

22

23

23

23

23

22

22

744

24.8

0.322

0.36

1,480

Dec.

22

21

21

21

21

*20

ZS

20

20

20

21

21

22

2323"

23

23

22

22

22

22

21

22

22

23

23

22

22

22

22

22

671

21.6

0.280

0.32

1,330

Jan.

22

2?

22

22

22

22

22

22

22

22

22

22

22

*22

21

20

19

19

19

19

20

21

21

20

20

20

19

19

TH" 18

J.O

18

639

20.6

0.267

0.31

1,270

Feb.

18 TB"

18

18

18

19

19

19

19

19

19

*19

19

19

20

20

19

19

19

20

20

20

22

25

27

25

26

25

568

20.3

0.263

0.27

1,130

Mar.

24

23

23

23

23

22

22

23

25

27

25

25

23

22

23

22

22

22

*22

24

26

25

24

22

23

23

23

24

25

28

51

739

23.8

0.309

0.36

1,470

Apr.

33

32

34

34

37

44

39

38

40

47

49

52

56

66

69

76

82

92

82

80

86

99

118

116

97

88

77

86

*126

158

2,133

71.1

0.922

1.03

4,220

May

171 22"9

243

260

296

323

343

343

323

339

331

505

510

T53

420

411

411

425

495

481

434

402

389

380

360

356

372

402

411

402

398

11,603

374

4.85

5.59

23,010

June

394

394

407

411 398"

376

*351

331

304

285

264

250

240

220

220

207

198

190

187

198

201

179

173

171

166

161

156

151

154

146

7,483

249

3.23

3.60

14,840

July

140

T3T

126

120

*116

116

112

*112

109

107

107

105

99

97

93

90

88

86

86

80

77

76

74

72

71

69

68

66

68

*71

68

2,900

93.5

1.21

1.40

5,750

Aug.

63

62

60

59

59

56

56

55

53

52

52

55

51

49

51

51

48

47

47

47

48

48

49

47

*46

52

47

49

51

46

TiT 4o

1,604

51.7

0.671

0.77

3,180

Sept.

IB- 46

42

42

.40

39

40

40

40

40

40

39

39

39

39

39

38

38

43

42

42

*4P

39

38

38

38

37

3B" 35

35

1,185

39.5

0.512

0.57

2,350

Calendar year 1956: Max 638 Min 2O Mean 105 Cfsm 1.36 In. 18.60 Ac-ft 76,340

Water year 1956-57: Max 510 Min 18 Mean 85.4 Cfsm 1,11 In. 15.01 Ac-ft 61,790

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 2, 15, 16, Nov. 19 to Dec. 13, Dec. 20-24, 

Dec. 26 to Jan. 3, Jan. 5-7, 10, 16-31, Feb. 17-19, Mar. 14, 23-26. No gage-height record Feb. 1-11; 

discharge estimated on basis of 3 discharge measurements, weather records, and records for nearby 

stations.
SNAKE RIVER MAIN STEM 29

Palisades Reservoir near Irwin, Idaho

Location.-Lat 43°20' , long 111-12', in NE^ sec. 17, T. 1 S., R. 45 E., on Snake River 

3 5 miles upstream from Palisades Creek and 6 miles southeast of Irwin.

Drainage area.--5.208 sq mi.

Records available.--October 1955 to September 1957.

Gage.--Pressure gage in powerhouse. Outside staff gages attached to concrete headwalls 

upstream from power and outlet tunnels. Datum of gage is at mean sea level (Bureau of 

^clamafcion datura) which is 0.51 ft above mean sea level, datum of 1929, supplementary

Extremes. Maximum contents during year, 966,700 acre-ft July 23 (elevation, 5,589 6 ft)- 

minimum observed, 918 acre-ft Oct. 2 (elevation, 5,393 2 ft)

T 19of"57LcM?xlJIlura contents, that of July 23, 1957; minimum observed, 565 acre-ft 

Jan. 31, 1956 (prior to filling of reservoir).

Remarks.--Reservoir is formed by earth-fill, rock-faced dam. Capacity 1 400 000 acre-ft 

between elevations 5,372 (river level at original outlet tunnels) and 5,620 ft Dead 

storage 44,100 acre-ft at elevation 5,452.43 ft, elevation of completed outlet tunnels 

inactive storage for minimum power head, 199,600 acre-ft at elevation 5 497 5 ft 

Water is used for irrigation in Snake River Valley.

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

Capacity table (elevation, in feet, and total contents, in acre-feet)

5,393

5,396

5,400

5,405

5,410

5,420

899

1,200

1,680

2,390

3,200

5,740

5,430

4,440

5,450

5,460

5,470

5,480

10,760

21,380

38,960

61,910

90,280

124,400

5,490

5,500

5,520

5,540

5,560

5,580

5,590

164,600

212,200

329,000

474,100

649,100

855,100

971,600

Total contents, in acre-feet, at 1O a.m., water year October 1956 to September 1957

Day

5

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

30

31

M(*)

Oct.

946

918

1,000

1,000

983

1,000

-

1,020

973

1,020

1,010

1,010

1,020

-

1,000

1,010

1,000

983

983

964

.

955

964

1,020

883

1,000

1,040

1,000 

1,010

5,394.2

-380

Nov.

992

955

6,530

-

12,300

18,000

23,800

29,400

35,200

41,300

_

51,500

56,700

58,700

61,200

62,900

-

-

84,100

96,000

108,400

121,100

135,300

148,500

-

174,000

187,000

199,600

225,200

5,502.5

+224,190

Dec.

237,700

249,900

264,300

277,900

291,200

304,900

317,500

329,700

340,800

353,500

367,200

380,500

392,600

405,700

418,300

432,700

443,400

454,300

465,300

474,900

484,500

493,500

500,900

507,500

514,200

517,500

518,400

519,200

520,900 

521,700

5,545.8

+296,500

Jan.

523,400

524,300

526,000

526,800

527,700

528,500

529,400

530,200

531,900

532,800

533,600

534,500

536,200

538,800

540,500

541,300

542,200

543,000

543,000

543,900

544,800

546,500

547,400

548,200

549,100

550,000

550,800

551,700

551,700 

551,700 

551,700

5,549.3

+30,000

Feb.

552,600

553,400

554,300

555,200

556,900

557,800

558,700

559,500

560,400

561,300

561,300

562,200

563,000

563,900

564,800

564,800

566,600

566,600

566,600

567,400

568,300

569,200

569,200

570,100

571,900

573,600

575,400

576,300

5,552.1

+24,600

Mar.

578,100

579,000

579,900

580,800

582,600

583,500

584,400

584,400

586,200

588,000

588,900

590,700

592,500

588,900

584,400

579,900

575,400

571,000

566,600

562,200

556,900

550,800

544,800

538,800

532,800

526,800

520,100

516,700

513,400 

511,700 

507,500

5,544.1

-68,800

Apr.

506,700

504,200

501,700

500,100

497,600

496,000

495,100

493,500

490,200

487,000

483,700

480,500

478,100

475,700

474,100

470,100

466,100

462,900

460,600

457,400

455,100

451,900

451,900

454,300

450,400

444,200

436,500

429,600

420,600 

414,600

5,532.3

-92,900

May

408,700

408 , 700

409,400

415,300

425,800

436,500

434,900

432,700

431,100

430,400

429,600

431, 100

433,400

440, 300

441,100

441,100

438,800

437,200

435,700

438,800

439,500

439,500

436,500

433,400

430, 400

425 , 800

422,800

422,100

425,800 

433 , 400 

443 , 400

5,536.1

+28,800

June

457,400

477,300

500,900

529,400

562,200

597,900

625,500

653,900

680,000

694,700

704,600

714,600

733,900

748,200

759,600

770,000

777,300

780,500

782,600

783,600

790,000

797,400

801,700

804,900

809,200

814,600

822,200

829,800

840,700 

853,800

5,579.8

+409,400

July

867,300

883,200

896,900

909, 6OO

921,300

929,500

935,400

937,800

936,600

937,800

940,200

945,000

949,800

953,400

959,400

963,100

964,300

964,300

964,300

964,300

965,500

965,500

966,700

964,300

963,100

958,200

947,400

937,800

921,300 

913,100

5,585.1

+60,300

Aug.

907,300

901, 50C

894, 6OO

887,700

885,400

875,200

868,500

858, 40C

847,300

837,400

825,400

815,700

806,000

800,600

795,300

792,100

787,900

784,700

780,500

775,200

772,100

768,900

766,800

763,700

760,600

758,500

756,400

753,400

749,200 

748,200

5,570.0

-164500

Sept.

747,200

747,200

747,200

748,200

748,200

744,100

739,000

730,800

722,700

714,600

705,600

697,700

688,800

681,000

675,100

668,300

669,300

668,300

667,400

665,400

660,600

654,800

648,200

644,400

637,700

634,000

630,200

626,500

622,700

5,557.2

-125,500

Calendar year 1956.................... * +520,801

Water year 1956-57.................... * +621,310

t Elevation, in feet, at end of month. 

* Change in contents, in acre-feet.
30 SNAKE RIVER MAIN STEM

Snake River near Irwin, Idaho

Location. Lat 43°21', long 111°13', in NE^ sec. 7, T. 1 S., R. 45 E., on right bank at 

Bureau of Reclamation headquarters, 1? miles downstream from Palisades Dam, 2 miles 

upstream from Palisades Creek, and 5 miles southeast of Irwin.

Drainage area. 5,225 sq mi.

Records available.--April to August 1934, March to November 1935, April to October 1936,

 March 1939 to September 1941, May 1949 to September 1957. Published as "at Calamity 

Point, near Irwin" 1934, 1939-41.

Average discharge.--8 years (1949-57), 6,918 cfs (5,008,000 acre-ft per year).

Gage.--Water-stage recorder. Datum of gage is 5,353.00 ft above mean sea level, datum of

 1929, supplementary adjustment of 1947. Apr. 21 to Aug. 4, 1934, and Mar. 30, 1939, 

to Sept. 30, 1941, water-stage recorder at site 2| miles upstream at different datum. 

Mar. 30, 1935, to Oct. 31, 1936, water-stage recorder at site 3} miles downstream at 

different datum. May 1, 1949, to Mar. 22, 1950, staff gage at site 1,100 ft downstream at datum 1.9 ft higher.

Extremes. Maximum discharge during year, 18,200 cfs June 9, 10 (gage height, 10.45 ft); 

minimum, 19 cfs Nov. 8 (gage height, 2.43 ft).

1934-36, 1939-41, 1949-57: Maximum discharge, 31,800 cfs June 4-6, 1956 (gageheight, 13.31 ft); minimum, that of Nov. 8, 1956.

Flood in early June 1894 probably was much higher than that of June 4-6, 1956.

Remarks. Records excellent. Flow partly regulated by Jackson Lake (see p. 13) and 

Palisades Reservoir (see preceding page). About 93,000 acres in Wyoming and Idaho 

irrigated by diversions from tributaries above station.

Cooperation. Gage-height record and nine discharge measurements furnished by Bureau of 

Reclamation.

Revisions.--WSP 1217: Drainage area.

Rating table, water year 1956-57 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 28 to Feb. 25, June 27 to Aug. 28)

2.4 

2.6 

3.0 

3.5 

4.0 

5.0

15

40

160

370

650

1,650

6.0 

7.0 

8.0 

9.0 

10.3

3,350

5,760

8,870

12,400

17,700

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 

2 

3 

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

Total

Mean

Ac-ft

Oct.

5,250 

3,190 

3,150 

5,090

5,090

3,050

5,090

5,070

5,050

5,090

3,070

3,050

3,090

5,070

5,050

2,990

2,970 

2,910

*2,950

2,930

2,910

2,870

2,910

5,050 

2,990

3,090

3,250

5,170

5,070

2,990

3,010

94,410

5,045

187,300

Nov.

2,950 

2,860 

1,460 

80

*71

*25

22

*1920"

20

120

611

1,010

*1,360

1,640

1,850

2,120 

2,620

1,620

1,650

1,610

1,520

1,550

1,560 

1,580

1,600

1,610

1,640

1,650

1,660

38,108

1,270

75,590

Dec.

1,660 

1,680 

1,790 

1,960

2,060

2,070

2,010

1,960

1,960

1,840

1,640

*1,640

1,650

1,660

1,660

1,670

1,680 

1,680

1,650

1,570

1,580

1,570

1,570

1,580 

1,570

1,570

1,570

1,570

1,580

1,570

1,580

52,800

1,703

104,700

Jan.

1,580 

1,560 

1,550 

*1,550

1,550

1,550

1,550

1,520

1,510

1,520

1,520

1,480

1,460

1,450

*1,460

1,420

1,400 

1,400

1,410

1,410

1,440

1,640

1,610

1,650 

1,640

1,620

1,650

1,650

1,650

1,650

1,640

47,610

1,556

94,430

Feb.

1,610 

1,610 

1,620 

*1,620

1,580

Ii620

1,650

1,680

1,680

1,690

1,620

1,650

1,680

1,700

1,720

1,770

1,740 

1,690

*1,640

1,750

1,740

1,880

1,610

1,580 

1,880

1,690

1,560

1,570

46,610

1,665

92,450

Mar.

1,620 

1,610 

1,620 

1,740

1,750

*1,740

*1,740

1,750

1,750

1,650

1,770

1,770

2,800

*4,550

4,310

4,330

4,350 

4,380

4,550

4,640

5,240

5,190

5,220

4,910 

5,170

5,170

4,420

3,460

3,450

3,430

3,450

103,010

3,323

204,500

Apr.

5,450 

3,430 

*3,450 

3,450

5,450

5,430

3,430

5,770

4,530

4,350

4,350

4,350

4,330

4,070

4,740

5,180

5,150 

5,150

5,150

5,150

5,150

4,310

3,560

4,490 

6,940

*7,810

7,960

8,190

8,580

149,250

4,975

296,000

May

8,320 

6,820 

4,960 

5,040

5,040

10,200

15,800

15,900

13,700

15,900

14,000

12,400

12,200

13,800

13,800

15,800

* 13, 800 

15,800

12,900

13 , 800

13,800

13 , 80O

15,700

15,400 

12,600

15,400

13,500

15 , 400

12,700

11 t 800 

11,700

575,780

12,060

741,400

June

9,500 

8,870 

8,800 

8,220

7,740

9,500

* 12, 600

12,700

12,500

17,700

16,800

14,100

11,700

12,000

10,800

10,500

10,300 

10,300

10,300

10,400

10,400

10,400

10,400

10,400 

10,400

10,300

10,200

10,300

10,700

11,100

529,150

10,970

652,800

July

11,100

11,' 100 

11,000

11,200

11,600

12,100

*12,500

12,500

15,000

13,200

15,400

13,200

12, 700

12,600

13,000

15,400 

*15,400

13,400

15,200

12,900

12, 700

12,600

12, 700 

13,000

12,900

13 , 000

15,000

12,900

12J 600

389,800

12,570

773,200

Aug.

12,400 

12^100 

12,100 

11,900

11,400

11,300

11,300

*11,100

10,900

10,700

10,500

10,100

9,760

9,410

8,900

8,740

8,350 

8,060

8,640

8,640

8,440

,810

,710

,740 

,740

,740

,780

,780

,710

590

 1 160

291,500

9,405

578,200

Sept.

6,880 

6,750 

6,450 

6,210

*6,060

6,600

7,840

8,410

7,930

7,950

7,900

8,060

8,160

8,000

8,000

7,870

7,400 

7,400

6,940

6,720

6,660

6,560

6,560

6,060 

6,090

*5,290

4,780

4,780

3,960

5.550

201,500

6,717

399,700

Calendar year 1956: Max 31,800 Min 19 Mean 8,515 Ac-ft 6,056,000

Water year 1956-57: Max 17,700 Min 19 Mean 5,801 Ac-ft 4,200,000

Discharge measurement made on this day.
SNAKE RIVER MAIN STEM 31

Snake River near Heise, Idaho

Location. Lat 43°36'45", long 111°39'05", In SW£ sec. 5, T. 3 N., R. 41 E., on left bank 

500 ft upstream from Anderson canal headgate, 3 miles upstream from Heise, 6 miles east 

of Ririe, and 23 miles upstream from Henrys Pork.

Drainage area. 5.752 sq mi.

Records available. September 1910 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317. Prior to 1911, published as South Pork of Snake River 

near Heise.

Gage. Water-stage recorder. Datum of gage is 5,015.3 ft above mean sea level, datum of 

~^T929. Prior to July 9, 1913, staff gage and July 9, 1913, to Sept. 29, 1922, waterstage recorder, at present site at datum 2.65 ft higher. Sept. 30, 1922, to Oct. 5, 

1933, water-stage recorder at present site at datum 2.0 ft higher.

Average discharge. 47 years, 6,878 cfs (4,979,000 acre-ft per year).

Extremes. Maximum discharge during year, 19,400 cfs June 10 (gage height, 6.62 ft); minimum, 460 cfs Nov. 10, 12 (gage height, -0.18 ft).

1910-57: Maximum discharge, about 60,000 cfs May 19, 1927, result of washing out of 

landslide on Qros Ventre River (gage height, about 16.0 ft, present datum); minimum, 

that of Nov. 10, 12, 1956.

Flood in early June 1894 was probably as great as flood of May 19, 1927.

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

partly regulated by Jackson Lake (see p. 13) and Palisades Reservoir (see p. 29) 

Station is above all irrigation diversions from main river except Riley ditch 

(4,300 acre-ft diverted during year), which diverts ij miles upstream from station. 

About 107,000 acres in Wyoming and Idaho irrigated by diversions from tributaries above 

station. Records of chemical analyses and water temperatures for the water year 1957 

are given in WSP 1523.

Revisions (water years). WSP 1217: Drainage area. WSP 1347: 1912.

Rating table, water year 1956-57, except periods of ice effect (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Mar. 14 to Apr. 26, May 7 to June 17, June 28 to Aug. 2)

-0.2

0.0

.4

1.0

453

525

760

1,390

2.0 

3.0 

4.0

1,350

5,640

8,570

5.0 

6.0 

7.0

12,000

15,700

20,300

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac- ft

Oct.

5,84O 

3,720

3,60O

3,580 

3,550

3,530

3,530

3,530

3,510

3,510

3,530

3,510

3,530

3,550

3,530

3,510

3,460

3,420

*3,370

3,350

3,330

5,500 

5,330

3,440

3,420

5,440

5,670

5,670

5,550

3,480

5,440

108,730

5,507

215,700

Nov.

5,550 

3,220

3,020

760 

567

534

*498

479

*470

46O

463

460

1,040

1,550

1,910

2,190

2,390

3,150

2,140

b2,020

b2,000

1,930 

1,950

1,960

bl,980

b2,010

b2,060

*b2,060

b2,050

b2,070

50,721

1,691

100,600

Dec.

2,070 

2,070

2,110

2,570 

2,500

2.520

b2,500

b2,440

b2,400

b2,300

2,170

2,140

2,120

2,120

2,150

2,190

2,170

2,170

2,170

2,090

b2,090

b2,080 

b2,07C

2,070

2,060

b2,060

b2,050

b2,050

b2,050

b2,050

b2,050

67,450

2,176

135,800

Jan.

b2,040 

b2,040

2,040

2,040 

b2,040

b2,040

b2,050

b2,OZO

b2,000

b2,000

b2,000

1,980

1,950

1,930

*1,930

bl,900

bl,880

bl.860

bl,860

bl,860

bl,860

2,060 

2,060

2,060

2,040

b2,030

b2,020

b2,020

b2,020

b2,020

b2,020

61,630

1,988

122,200

Feb.

b2,020 

2,050

2,010

2,050 

2,050

1,950

2,030

2,060

2,060

2,060

2,060

1,950

2,090

1,280

2,070

2,150

2,090

2,090

*2,070

2,040

2,150

2,070 

2.560

1,870

2,070

2,240

2,070

2,040

_

57,940

2,069

114,900

Mar.

2,010 

2,040

2,070

2,120 

2,140

2,140

2,140

2,140

2,150

2,150

2,110

2,190

2,170

4,600

4,650

4,680

4,780

*4,810

4,810

4,830

5.770

5,740 

5,670

5,350

5,690

5,720

5,510

3,840

3,820

3,840

5,840

115,520

3,726

229,100

Apr.

3,840 

3,820

5,820

5,790 

5,790

5,960

3,890

3,940

,890

,960

,990

,990

,960

4,700

5,120

5,850

5,870

5,900

5,870

5,850

5,850

*5,610 

4,260

4,570

7,570

7,840

8,350

8,410

8,870

9.050

164,760

5,492

526,800

May

9,O3O 

9,030

6.280

6,470 

6,690

8,770

15,300

15,400

15,300

15,500

15,500

15,000

14,200

14,700

15,500

15,200

15,100

15 , 200

14,700

15,500

15,500

15,000 

14,800

14,500

14,100

14,500

15 , 100

* 15 ,200

14,900

13,900

13,900

419,370

15,530

831,800

June

11,800 

11,000

11,100

10, 800 

10,000

10,700

14,300

14,200

12,700

18,200

* 18, 000

16,200

12,800

13,400

12,200

11,400

11,400

11,200

11,200

11,400

11,500

11,400 

11,400

11,400

*11,300

11,300

11 , 200

11,200

11,300

11,800

367,800

12,260

729,500

July

11,800 

11,800

11,800

11.7OO 

11,700

12,200

12,600

* 13, 200

13 , 200

15,400

15,700

15,800

13, 860

13 , 400

13,000

13,200

15,600

15,600

15,600

13,700

15,400

15,200 

15,100

15,000

15,300

13,200

13,300

13,300

15,200

13,000

12,900

405,700

15,020

800, 700

Aug.

12.700 

12^700

12,500

12,5OO 

12,000

11,800

11,800

11,700

*11,400

11,200

11,100

10,700

10,300

10, 100

9,590

9,450

9,200

8,740

9,500

9,250

9,200

8,640 

8,580

8,580

8,510

8,510

8,280

8,250

*8,220

8,220

7,900

509,680

9,990

614,200

Sept.

7,550 

7,570

7,040

6,980 

6,470

7,010

7,590

9,060

8,510

8,190

8,280

8,190

8,570

8,280

8,280

8,220

7,870

7,840

7,560

7,250

7,150

7,150 

7,070

6,660

6,660

*6,220

5,800

5,610

5,020

4.240

217,450

7,248

431,500

Calendar year 1956 : Max 33,100 Min 460 Mean 8,878 Ac-ft 6,446,000

Water year 1956-57: Max 18,200 Min 450 Mean 6,424 Ac-ft 4,651,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
32 HENRYS PORK BASIN

Henrys Pork near Lake, Idaho

Location. Lat 44 0 36', long 111°21', in SW-f sec. 26, T. 15 N., R. 43 E., on left bank a 

quarter of a mile downstream from Henrys Lake Dam and 4 miles south of former Lake 

Post Office.

Drainage area. 98 sq mi, approximately, including 6 sq mi of Dry Creek Basin.

Records available.--May 1920 to September 1957. (Prior to October 1930, irrigation 

seasons only). Monthly discharge only for some periods, published in WSP 1317. ' 4.

Gage.--Water-stage recorder. Datum of gage is 6,450.62 ft above mean sea level, levels 

b~y Bureau of Reclamation (Corps of Engineers bench mark). Prior to September 1922, 

staff gage at site 3 miles downstream and below mouth of Dry Creek.

Average discharge. 28 years (1929-57), 45.6 cfs (33,010 acre-ft per year).

Extremes.--Maximum discharge during year, 287 cfs June 13 (gage height, 2.27 ft); minimum, 8 cfs Oct. 11-19.

1920-57: Maximum discharge, 907 cfs June 13, 1926 (gage height, 5.40 ft); no flow 

for part of Sept. 17, 18, 1952.

Outflow from Henrys Lake was reported to have ceased entirely late in summer of 

1889.

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

Plow regulated by Henrys Lake (see p. 43). Since 1923, floodwaters of Dry (Tyghee) 

Creek have been diverted at times into Henrys Lake (none diverted during 1957).

Revisions. WSP 1217: Drainage area.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

17

17

17

17

17

17

17

17

17

12

8

8

8

*8

8

8

8

8

8

9

10

10

10

10

10

10

11

11

11

11

11

361

11.6

716

Nov.

11

*11

-

-

-

.

-

-

-

-

.

-

-

-

-

_

-

-

-

-

-

-

-

-

-

-

-

-

~

.

13

774

Dec.

tie

_

16

984

Jan.

.

20

1,230

Feb.

23

2S

23

23

23

24

24

24

24

24

24

24

24

24

24

25

25

25

25

25

25

25

*25

26

2T

26

26

26

-

685

24.5

1,360

Mar.

26

26

26

26

26

26

27

27

27

27

27

27

27

27

27

28

28

28

28

30

34

35

35

35

35

35

35

35

35

35

35

925

29.8

1,830

Apr.

35

35

35

35

35

35

35

35

35

35

35

35

35

35

*35

35

35

35

35

35

36

36

36

36

37

37

37

37

37

3_8

1,067

35.6

2,120

May

38

4CT

42

47

53

56

58

59

64

65

67

77

88

91

91

93

90

90

91

*98

113

100

102

98

93

93

91

89

90

94

100

2,461

79.4

4,880

June

107

113

119

127

136

148

161

166

174

185

179

217

247

*240

242

257

230

212

206

227

242

227

214

206

199

193

188

182

180

180

5,704

190

11,310

July

176

168

167

155

151

144

138

133

130

126

123

117

117

117

*116

116

113

133

154

150

144

140

138

136

133

134

133

133

133

131

130

4,229

136

8,390

Aug.

129

127

126

127

126

126

124

123

122

122

120

119

117

*!!£.

117

120

122

124

124

127

127

126

124

126

126

127

129

129

130

136

143

3,881

125

7,700

Sept.

140

140

134

124

123

124

123

123

120

120

*83

47

*47

47

47

48

48

30

13

14

15

15

15

14

14

14

13

13

12

12

1,832

61.1

3,630

Calendar year 1956 : Max 203 Min 8 Mean 29.0 Ac-ft 21,030

Water year 1956-57 : Max 257 Min 8 Mean 62.1 Ac-ft 44,920

* Discharge measurement made on this day. 

t Result of discharge measurement.

Note.*-No gage-height record Nov. 3 to Feb. 22, Apr. 7-14; discharge estimated on b 

charge measurements. Only monthly figures estimated for November, December, January.

iasls of 4 dis-
HENRYS PORK BASIN 33 

Island Park Reservoir near Island Park, Idaho

Location.--Lat 44°25'11", long 111°23 I 52", a quarter of a mile south of quarter corner 

between sees. 28 and 29, T. 13 N., R. 43 E., in gatehouse shaft at dam on Henrys Pork, 

three-eighths of a mile upstream from Buffalo River and 2 miles west of Island Park 

Post Office.

Drainage area.--481 sq mi.

Records available. November 1938 to September 1957.

Gage. Electric tape gage read once daily. Datum of gage is at mean sea level (levels by 

Bureau of Reclamation).

Extremes. Maximum contents during year, 140,515 acre-ft May 13 (elevation, 6,303.65 ft); 

minimum, 50,080 acre-ft Sept. 29, 30 (elevation, 6,288.81 ft).

1938-57: Maximum contents, that of May 13, 1957; minimum after first filling of 

reservoir in May 1939, 16,855 acre-ft Sept. 27, 1940 (elevation, 6,274.82 ft).

Remarks. Reservoir is formed by earth-fill, rock-faced dam. Storage began Nov. 15, 1938. 

Capacity, 127,265 acre-ft between elevations 6,239 (normal low-water level with outlet 

gates open) and 6,302 ft (crest of spillway). Natural flow passing through reservoir 

when outlet gates are open limits withdrawal of storage to elevation 6,230 ft (sill of 

lower outlet). Dead storage negligible. Water is used for irrigation of lands in 

Premont-Madison irrigation district between Ashton and Rexburg. Figures given herein 

represent usable contents.

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

Revision^.--WSP 1217: Drainage area.

Capacity table (elevation, In feet, and usable contents, In acre-feet)

6,288.0

6,290.0

6,293.0

6,296.0

47,095

54,800

68,655

85,565

6,299.0

6,302.0

6,304.0

105,150

127,265

143,430

Usable contents, in acre-feet, at 8 a.m., water year October 1956 to September 1957

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.

80.080 

80,080 

80,080 

80,080 

80,310

80,310 

80,310 

80,310 

80,665 

80,720

80,780 

80,900 

80,955 

80,955 

80,955

80,900 

80,780 

80,665 

80,255 

80,430

80,430 

80,370 

80,370 

80,545 

80,545

80,900 

81,490 

81,490 

81,370 

81,370 

81,960

3,295.40 

+1,940

Nov.

82,020 

80,665 

77,940 

75,855 

73,805

71,485 

69,855 

68,055 

66,245 

64,430

63,090 

62,290 

61.405 

61,405 

61,545

62,665 

63,950 

65,065

eg.ogs

67,040

68,000 

68,920 

69,855 

70,800 

71,645

72,500 

73,480 

74,410 

75,130 

76,135

5,294.39 

-5,825

Dec.

77,090 

78,000 

78,975 

79,905 

80,900

81,840 

82,795 

83,750 

84,720 

85,685

86,605 

87,595 

88,530 

89,470 

90,415

91,685 

91,940 

92,385 

92,710 

93,095

93,290 

93,480 

93,610 

93,740 

93,935

94,130 

94,250 

94,325 

94,455 

94,715 

95,500

6,297.57 

+19,365

Jan.

96,485

97,410 

98,275 

99,145 

100,085

101,030 

101,915 

102,870 

103,835 

104,870

105,845 

106,685 

107,525 

108,445 

109,370

110,155 

110,945 

111,735 

112,530 

113,695

114,500 

115,375 

116,260 

117,075 

117,890

118,710 

118,710 

118,785 

118,860 

118,935 

119,010

6,300.92 

+23,510

Feb.

119,610

119,835 

119,985 

120,065 

120,515

120,590 

120,665 

120,740 

120,970 

121,120

121,195 

121,195 

121,195 

121,120 

121,120

121,120 

121,120 

121,120 

121,120 

121,045

121,120 

121,195 

121,425 

121,955 

122,185

122,260 

122,335 

122,565

6,301.39 

+3,555

Mar.

122,565

122,640 

122,715 

122,790 

122,870

122,870 

122,870 

122,790 

122,790 

122,790

122,790 

122,790 

122,870 

122,870 

122,790

122,790 

122,790 

122,790 

122,870 

122,870

122,870 

122,870 

122,870 

122,945 

122,945

122,945 

122,945 

122,870 

122,870 

122,870 

122,945

6,301.44 

+380

Apr.

122,945

123,400 

123,400 

123,400 

123,400

123,555 

123,705 

123,705 

123,705 

123,705

123,860 

123,935 

123,935 

124,010 

124,090

124,395 

124,550 

124,395 

124,395 

124,475

124,550 

124,550 

124,550 

124,550 

124,935

124,935 

124,860 

124,780 

124,780 

124,780

6,301.68 

+1,835

Hay

124,935

125,090 

125,865 

126,485 

127,420

128,830 

132,390 

135,205 

137,475 

138,625

139,200 

139,525 

140,515

140,435 

139,940

140,020 

139,445 

139,115 

139,115 

139,690

139,940 

139,775 

139,115 

138,790 

138,295

138,050 

137,720 

137,560 

137,720 

137,805 

137,805

6,303.32 

+13,025

June

138,050 

138,295 

138,460

138,295 

138,130

138,130 

138,050 

137,885 

137,805 

137,885

137,720 

137,475 

137,475 

137,395 

137,230

137,150 

137,150 

137,070 

136,665 

136,580

136,665 

136,665 

136,580 

136,580 

136,420

136,095 

136,095 

135,610 

135,610 

135,285

6,303.01 

-2,520

July

135,365

135,205 

134,880 

134,555 

134,395

134,395 

134,395 

134,315 

134,235 

134,155

133,430 

132,870 

132,310 

131,590 

130,720

130,010 

129,220 

128,045 

126,180 

124,320

122,790 

121,650 

120,140 

118,935 

117,670

116,040 

114,500 

113,040 

111,160 

110,230 

108,660

6,299. 50 

-26,625

Aug.

107,035

105,495 

103,905 

102,320 

101,030

99,615 

97,940 

96,485 

95,040 

93,545

91,620 

89,845 

88,090 

86,300 

84,535

82,970 

81,605 

80,255 

78,975 

77,600

76,360 

75,130 

73,970 

72,880 

71,805

70,585 

69,490 

68,255 

67,390 

66,345 

65,405

6,292.35 

-43,255

Sept.

64.675 

63,950 

63,235 

62,430 

61,590

60,855 

60,490 

60,035 

59,540 

59,095

58,605 

58,165 

57,815 

57,120 

56,480

56,140 

55,385 

54,385 

53,650 

52,765

51,815 

51,540 

51,190 

50,995 

50,765

50,535 

50,230 

50,190 

50,080 

50,060

6,288.81 

-15,325

Calendar year 1956.................... * +23,750

Water year 1956-57.................... * -29,940

t Elevation, In feet, at end of month. 

* Change In contents, In acre-feet.
34 HENRYS PORK BASIN

Henrys Fork near Island Park, Idaho

Location. La t 44°24'59", long 111 0 23'41", in SW£ sec. 28, T. 13 N. , R. 43 E., on left 

bank an eighth of a mile downstream from Island Park Dam, a quarter of a mile upstream 

from Buffalo River, and 1 mile west of Island Park Post Office.

Drainage area.--481 sq mi.

Records available. January 1933 to September 1957.

Gage . Water-stage recorder. Altitude of gage is 6,225 ft (from river-profile map). 

Prior to May 15,1935, staff gage at site about three-quarters of a mile upstream at 

different datum. May 15 to Nov. 30, 1935, water-stage recorder at site 1,000 ft downstream at different datum.

Average discharge . 24 years, 547 cfs (396,000 acre-ft per year).

Extremes. Maximum discharge during year, 1,700 cfs May 13, 14 (gage height, 4.80 ft); 

minimum daily, 7 cfs for many days.

1933-57: Maximum discharge, 2,770 cfs Apr. 26, 1946 (gage height, 6.15 ft); minimum daily, 1 cfs Nov. 16 to Dec. 7, 1938.

Remarks. Records good. Flow regulated by Henrys Lake (see p. 43) and Island Park Reservoir (see preceding page). About 14,000 acres irrigated by diversions above station, 

a considerable portion of which consists of partly sub-irrigated meadows.

Cooperation. Gage-height record and one discharge measurement furnished by Bureau of 

Re Reclamation. 

Revisions. WSP 1217: Drainage area.

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

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

Total

Mean

Ac-ft

Oct.

445

445

445

445

445

445

445

445

445

445

445

445

427

*BT5

BT5

543

538

538

500 

481

481

481

481

481

481

4S1

481

481

481

4 SI

481

14,754

476

29,260

Nov.

863

*1,660

1.680

1,680

1,660

1,550

1,420

1,440

1,440

1,320

1,090

1,010

782

601

184

7

7

7

7 

7

7

7

*7

7

7

7

7

7

7

7

18,485

616

36,660

Dec.

7

T

7

7

7

7

7

7

7

7

195

259

235

*235 

304

346" 346

346

346

346

346

346

346

346

135

7

4,589

148

9,100

Jan.

7

7

7

7

7

7

7

7

7

7

7

7

7

7

7

7

7

7

7 

7

7

7

7

7

7

214

335" 338

338

338

338

2,079

67.1

4,120

Feb.

338

335

338

338

338

338

338

338

338

338

368

391

391

391

391

391

391

391

391 

391

391

391

*400

404

40T

404

404

404

-

10,469

374

20,760

Mar.

404

414

436

436

481

4S1

481

481

486

490

490

495

504

509

555

476

476

481

476 

481

481

481

486

490

490

490

486

486

486

486

486

14,835

479

29,420

Apr.

486

486

481

476

476

472

468

468

463

458

454

454

450

445

*440

440

500

500

500 

495

495

490

490

490

490

586

556

586

581

581

14,787

493

29,330

May

581

581

581

733

743

545

T33" 391

1,050

1,260

1,380

1,570

1,700

1,700

1,610

1,610

1,520

1,450

1,470 

*1,590

1,640

1,660

1,460

1,400

1,300

1,250

1,220

1,200

1,220

1,240

1,240

37,628

1,214

74,630

June

1,300

1.340

1,340

1,320

1,310

1,320

1,290

1,280

1,250

1,240

1,220

1,180

1,150

*1,130

1,120

1,120

1,100

1,070

1,050 

1,040

1,060

1,060

1,040

1,020

986

961

950

925

900

865

33,937

1,131

67,310

July

870

836

821

787

772

762

753

743

733 310"

992

976

971

986

*956

935

1,130

1,450

1.520 

1,510

1,390

1,300

1,290

1,280

1,340

1,400

1,380

1,360

1,360

1,360

1,360

34,233

1,104

67,900

Aug.

1,350

1,350

1,340

1,340

1,340

1,330

1,340

1,330

1,320

1,420

1.480

1,486

*1,480

1,480

1,470

1,370

1,280

1,280

1,270 

1,280

1,230

1,180

1,180

1,170

1,170

1,170

1,160

1,160

1,160

1,150

1,100

40,160

1,295

79,660

Sept.

1.050

1,030

1,020

1,020

986

885

841

836

836

831

831

826

*826

826

826

900

1,010

1,010

1,010 

997

841

71S

689

664

660

655

610

576

552

533

24,895

830

49,380

Calendar year 1956: Max 1,750 Mln 7 Mean 526 Ac-ft 382,000

Water year 1956-57: Max 1,700 Min 7 Mean 687 Ac-ft 497,500

* Discharge measurement made on this day.

Note_. Discharge computed from once-daily staff-gage readings Nov. 16 to May 24.
HENRYS FORK BASIN 35

Henrys Fork near Ashton, Idaho

Location.--Lat 44°05', long 111°30', in sec. 28, T. 9 N., R. 42 E., on right bank a 

quarter of a mile downstream from powerplant and 3 miles west of Asbfcon.

Drainage area.--1.040 sq mi.

Records available. April 1890 to June 1891, August 1902 to June 1909, April 1920 to

September 1957 (seasonal records only 1920-26). Monthly discharge only for some periods, published in WSP 1317. Published as Henry Fork in canyon, above Fall River 

1890-91 and as North Fork of Snake River near Ora 1902-9.

gage. Water-stage recorder. Altitude of gage is 5,095 ft (from river-profile map). 

Tipril 1890 to June 1891, staff gage at site 6 miles downstream at different datum. 

August 1902 to Apr. 15, 1921, staff gage and Apr. 16, 1921, to May 3, 1930, water-stage 

recorder, at site 1? miles downstream from present site at different datum.

Average discharge. 37 years (1902-8, 1926-57), 1,358 cfs (983,200 acre-ft per year).

Extremes. Maximum discharge during year, 5,040 cfs May 21; maximum gage height, 8.10 ft 

Aug. 11; minimum discharge, 352 cfs Feb. 13 (gage height, 5.41 ft); minimum daily, 

494 cfs Jan. 17.

1890-91, 1902-9, 1920-57: Maximum discharge, 6,220 cfs May 7, 1925 (gage height, 

3.11 ft. site and datum then in use); minimum, 65 cfs Oct. 16, 1935 (gage height, 

4.59 ft); minimum daily, 440 cfs Dec. 5, 1931.

Remarks. Records good. Diurnal fluctuation caused by powerplant above station. Flow 

regulated by Henrys Lake (see p. 43) and Island Park Reservoir (see p. 33). About 

18,000 acres irrigated by diversions above station.

Cooperation. Page-height record during nonirrigation season furnished by Utah Power and 

Light Co.

Revisions (water years). WSP 1217: Drainage area. WSP 1347: 1890-91.

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 

2 

5

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19 

20

21

22

25

24

25

26

27 

28 

29

30

31

Total

Mean

Ac-ft

Oct.

1,210 

1.150 

1,140

1,170

1,200

1,190

1,160

1,130

*1,200

1,190

1,190

1,170

1,240

1,200

1,500

1,280

1,260

1,260

1,520 

1,250

1,200

1,230

1,270

1,340

1,270

1,340

1,440 

1,326 

1,230

1J540

38,430

1,240

76,220

Nov.

1,340 

2,160 

2.700

2, 680

2,610

2,660

2,180

2,260

2,280

2,240

2,040

1,660

1,750

1,530

1,080

847

749

749

618 

557

 696

707

758

728

749

758

718 

718 

696

728

41,776

1,393

82,860

Dec.

749 

760 

760

770

781

749

636

770

718

728

781

770

770

770

738

760

892

1,000

*976 

976

1,040

1,010

1,040

1.090

1,040

1,010

952 

1,000 

988

964

707

26,695

861

52,950

Jan.

598 

627 

656

627

598

618

627

676

618

608

618

618

676

696

696

528

494

608

627 

676

646

665

676

676

*646

562

770 

952 

964

1.000

1,000

21,047

679

41,750

Feb.

1,030 

1,050 

1,050

976

976

1,010

964

1,050

1,040

964

1,030

1,080

1,030

1,100

1,120

1,090

1,100

1,120

1,120 

1,130

1,150

1,170

1,170

1,200

1,210

1,190

1.280 

1,190

50,550

1,090

60,560

Mar.

*1.190 

1,196 

1,250

1,250

1,260

1,260

1,260

1,260

1,280

1,500

1,250

1.520

1,366

1,230

1,250

1,210

1,210

1,200

1,200 

1,200

1,210

1,210

1,210

1,200

*1,200

1,250

1,210 

1,250 

1,240

1,260

1,320

58,510

1,256

75,990

Apr.

1,500 

1,270 

1,750

1,530

1,320

1,380

1,380

940

814

1,350"

1,380

1,590

1,580

1,420

1,400

1,380

1,500

1,530

1,550 

1,560

1,580

1,600

1,700

1,920

1,730

2,040

1,750 

1,680 

2.100

1,940

45,574

1,519

90,390

May

1.860 

2^590 

2,300

2,590

3,280

5,210

2,040

*2,970

3,190

3,350

3,440

4,510

4,220

4,140

4,170

5,930

3,720

3,700

3,980

»4.480

4,440

5,980

3,600

3,550

5,280

5,100

5,010 

3,010 

2,950

2,910

2,890

103,990

3,355

206,300

June

2,820 

2.840 

2,800

2,760

2,700

2,610

2,590

2,570

2,550

2,570

2,510

2,400

2,540

*2,340

2,300

2,280

2,240

2,080

2,080 

2,020

2,200

2,160

2,060

2,020

1,940

1,900

1,900 

1.860 

1,980

1,960

69,580

2,515

137,600

July

1,940 

1,680 

1,700

1,660

*1,550

1,390

1,550

1.520

1,476

1,440

1,810

1,660

1,750

1,720

1,770

1,700

1,610

2,160

2.400 

2,366

2,360

2,040

2,060

2,000

2,040

2,120

2,140 

2,020 

2,140

2,000

2,120

57,460

1,854

114,000

Aug.

2,080 

1,980 

2,080

2,060

*2,040

2,040

2,040

2,060

2,040

2,060

2.400

2,240

2,540

2,300

2,240

2,300

2,060

2,000

*2,040 

1,980

2,040

2,020

1.900

1,940

1,940

1,940

1,980 

1,960 

2,020

2,020

2,080

64,220

2,072

127,400

Sept.

1,880 

1,770 

1,770

1,750

*1,720

1,610

1,500

1,440

1,470

1,480

1,500

1,520

1,550

1,480

1,580

1,520

1,750

1,880

2.000 

1,986

1,900

1,450

1,590

1,550

1,560

1,590

1,590 

1,550 

1,240

1^2jLO

47,120

1,571

93,460

Calendar year 1956: Max 2,990 Mln 510 Mean 1,418 Ac-ft 1,029,000

Water year 1956-57: Max 4,480 Mln 494 Mean 1,601 Ac-ft 1,159,000

* Discharge measurement made on this day.
36 HENRYS FORK BASIN

Diversions from Pall River above gaging station near Squirrel, Idaho

Above Squirrel gaging station, two canals divert water from Pall River for irrigation. 

Records available for part of each irrigation season from 1919 to 1957. Discharge of 

canals computed from daily or- twice-weekly staff-gage readings, or interpolated, and combined to show total diverted flow. Records good.

Day

1

2

3

4

5

6

7

8

9

10

June

00"

o

0

80

100

120

125

130

140

July

16O

180

180

190

200

210

220

223

225

225

Aug.

283

280

279

278

278

262

270

262

262

261

Sept.

150

14g

80

79

76

75

75

73

72

72

Day

11

12

13

14

15

16

17

16

19

20

June

140

140

140

140

140

160

170

180

190

200

Total ...................

July

225

225

257

257

240

241

248

258

247

266

Aug.

258

259

257

257

258

252

251

244

234

252

Sept.

72

75

73

73

75

73

74

73

76

75

Day

21

22

23

24

25

26

27

28

29

30

31

Mean.............. ................... .

Runoff in acre-feet ..................... . . ...

June

201

SOT

180

150

144

144

144

144

144

144

-

5 891

7,720

July

267

265

265

285

290

298

299

297

292

289

14,970

Aug.

224

224

209

205

206

178

rer

180

179

179

179

14,600

Sept.

76

76

75

9

9

60

60

60

60

-

4,360

The season: Max Ac-ft 41,650

Monthly discharge only for some periods, published in 

Wilson's Mill, near Marysville" 1902, as "near Marysville"

Note. Records began May 1, 1957; no flow May 1 to June 4.

Fall River near Squirrel, Idaho

Location. Lat 44°04'15", long 111°14'25", in NE^ sec. 34, T. 9 N., R. 44 E., on right 

bank a quarter of a mile upstream from road bridge, half a mile downstream from headgates of Marysville Canal, 4 miles northeast of Squirrel, and 10 miles upstream from 

Conant Creek.

Dra inage are a.--3 51 sq mi.

Records available. August 1902 to June 1909 (gage heights only prior to October 1904), 

May 1918 to September 1957. Mor " " ' ~ " " " ---.-. 

WSP 1317. Published as "at Wil£__ 

1903, and as "at Fremont" 1904-9.

Gage.--Water stage recorder. Datum of gage is 5,589 ft above mean sea level, datum of 

1929. Prior to Jan. 1, 1904, staff gage at site 3 miles upstream at different datum. 

Jan. 1, 1904, to Nov. 6, 1937, staff gage 200 ft upstream from present site at different datum. Nov. 7, 1937, to Oct. 7, 1948, staff gage 100 ft downstream from present 

site at datum 0.29 ft lower.

Average discharge.--43 years (1904-8, 1918-57), 757 cfs (548,000 acre-ft per year).

Extremes. Maximum discharge during year, 4,080 cfs June 6 (gage height, 4.77 ft); minimum, 378 cfs Jan. 28 (gage height, 1.05 ft).

1904-9, 1916-57: Maximum discharge observed, 6,440 cfs June 27, 1927; minimum 

observed, 72 cfs Feb. 9, 1930.

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

since October 1939 partly regulated by Grassy Lake (see p. 43). About 16,000 acres 

irrigated from two diversions above station.

Revisions (water years).--WSP 1217: Drainage area. WSP 1347: 1905.

Discharge, In cubic feet per second, water year Ocbober 1956 bo September 1957

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

Tota3

Mean

Ac-ft

Oct.

640

633 

626

626

640

594 

581

581

581

594

594

561

614

600

588

581

574

562 

588

574

568

562

574

581

568

600

6O7

574

562

*568 

607

18,323

591

36,340

Nov.

614 600" 

607

590

590

590 

600

588

588

588

588

588

607

562

528

562

568

550 

528

506

500

562

562

528

522

522

516

528

 544

535

16,861

562

33,440

Dec.

525

5T5 

511

511

522

511 

5OO

495

506

506

516

500

516

506

506

511

490

5OO 

495

485

490

460

48O

465

475

475

480

480

480

46O 

460

15,412

497

30,570

Jan.

ISO" 480

480

48O

480

475 

475

480

46O

480

*480

480

480

480

470

460

450

450 

450

450

440

435

430

425

420

42O

420

420

420

420 

420

14,110

455

27,990

Feb.

420 420" 

420

420

420

420 

420

425

430

430

430

430

430

435

440

440

435

435 

435

*440

450

450

440

445

455

455

460

445

12,175

435

24,150

Mar.

445

445 

445

440

445

435 

435

440

440

445

435

450

145

430

425

425

430

425 

430

43O

440

430

43O

430

*425

420

415

415

435

440 

450

13,470

435

26,720

Apr.

450

450" 445 

445

46O

480 

455

455

455

465

475

475

470

485

511

511

544

550 

555

550

562

594

633

620

581

550

538

588

741

870

15,963

532

31,66O

May

825 *i,U2o"

1,230

1,560

1,890

1,960 

2,260

2,500

2,500

2,560

2,720

5,180

*2,640

2,990

2,800

2,570

2,430

2,420 

2,620

2,730

2,360

1,900

1,730

1,720

1,800

1,920

2,220

2,440

2,570

2,620 

2,770

69,475

2,241

137,800

June

3,030

3,230 

3,540

3,670

*3,740

5,960 

3,840

3,610

3,380

3,550

5,210

3,030

2,820

2,710

2,330

2,000

1,770

1,560 

1,600

1,840

2,210

2,160

1,920

1,910

2.O5O

2,000

1,920

2,010

2,260

2 , 36O

79,000

2,655

156,700

July

2,150

2.190 

2^100

,900

* ,660

,65O 

,740

,470

,420

,570

,230

,190

1,110

1,030

952

870

790

727 

720

741

692

678

646

626

620

652

646

626

672

659 

640

34,167

1,102

67,770

Aug.

'550" 62O

600

594

*594

581 

555

550

544

538

558

538

533

522

522

522

522

522 

526

533

533

538

536

5OO

495

528

536

533

568 

562

594

16,983

546

33,690

Sept.

600

594 

600

588

*581

574 

574

562

562

562

555

550

550

544

544

538

538

544 

607

55T

568

562

555

550

555

538

533" 553

535 

553

16,808

560

33,340

Calendar year 1956: Max 3,720 Mln 375 Mean 914 Ac-ft 663,500

Water year 1956-57: Max 3,960 Mln 415 Mean 884 Ac-fb 640, 2OO

Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Nov. 4-6, Nov. 30 to Dec. 2, Dec. 28 to Feb. 15.
HENRYS FORK BASIN 37

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

Between Squirrel and Chester gaging stations, nine canals divert water from Pall River 

for irrigation. Records available for part of each irrigation season from 1919 to 1957 

Discharge of canals computed from daily or twice-weekly staff-gage readings, or interpolated, and combined to show total diverted flow. Records good

Discharge, in cubic feet per second, 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

May

155

113

116

124

176

244

235

221

254

254

258

236

248

241

186

June

402

397

404

507

581

650

747

744

786

831

828

828

829

834

834

July

667

675

668

654

706

709

734

721

794

740

711

771

747

732

743

Aug.

617

594

585

574

585

592

574

573

577

573

555

561

537

530

520

Sept.

421

420

394

365

344

378

388

392

396

399

409

414

419

421

420

Day

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Mean ...............................................

Runoff In acre-feet ................................

May

203

227

268

271

235

222

236

253

270

274

279

282

300

348

369

39J3

242

14,860

June

837

745

734

762

802

798

737

687

643

660

675

681

615

626

635

695

41,330

July

726

710

665

659

681

653

659

648

637

626

668

675

652

664

668

632

690

42,440

Aug.

496

494

492

496

499

498

502

463

457

453

454

440

442

427

441

437

517

31,810

Sept.

420

436

437

490

521

503

481

485

482

482

467

468

463

461

457

434

25,850

The season: Max Ac-ft 156,500

Fall River near Chester, Idaho

Location.--Lat 44°01' , long 111°34', in sec. 13, T. 8 N., R. 41 E., on right bank 1,000 ft 

upstream from highway bridge, half a mile upstream from mouth, and l£ miles north of 

Chester.

Drainage area . 520 sq mi, approximately.

Records available.--April 1920 to September 1957 (irrigation seasons only).

Gage. Water-stage recorder. Datum of gage is 5,051.9 ft above mean sea level, datum of 

T9S9. Prior to Aug. 9, 1920, staff gage 200 ft downstream at same datum. Aug. 9, 

1920, to Apr. 28, 1921, staff gage at present site and datum.

Extremes. Maximum discharge during season, 3,920 cfs June 6 (gage height, 5.15 ft); minimum, 51 cfs July 26 (gage height, 1.21 ft).

1920-57: Maximum discharge recorded, 6,380 cfs June 27, 1927 (gage height, 6.60 ft); 

minimum recorded, 9 cfs Aug. 7, 1923 (gage height, 1.01 ft).

Remarks. Records excellent. Flow since October 1939 partly regulated by Grassy Lake 

(see p. 43). About 42,000 acres of land irrigated by diversions above station. Station is below all diversions from Fall River.

Revisions. WSP 1217: Drainage area.

Rating table, Apr. 30 to Sept. 30, 1957 (gage heighu, In feet, and 

discharge, In cubic feet per second)

1.2 48

1.4 81

1.6 127

2.0 265

2.5 515

3.0 900

4.0 1,990

5.0 3,560

6.0 5,400

Discharge, in cubic feet per second, 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

May

909

1,090

1,380

1,640

2,130

2,190

2,370

2,850

2,820

2,820

2,980

5.740

*5,220

5,490

5,590

June

5,050

5,220

3,530

3,630

*3,630

5,790

3,650

3,390

3,150

2,960

2,820

2,610

2,370

2,260

1,900

uly

,790

*" , 720

,670

,500

,220

,140

1,180

963

837

786

666

615

522

449

390

Aug.

94

94

92

100

*104

102

89

87

85

79

87

102

107

112

117

Sept.

346

342

355

355

346

328

306

301

288

278

270

261

253

245

245

Day

16

17

18

19

20

21

22

23

24

25

26

27

28

29

50

51

Total ..............................................

Runoff In acre-feet. ...............................

May

5,070

2,800

2,770

2,950

5,270

2,960

2,340

2,030

1,940

1,980

2,060

2,330

2,590

2,700

2,700

2,850

78,339

2,527

155,400

June

1,600

1,440

1,140

1,110

1,250

1,670

1,760

1,610

1,540

1,610

1,610

1,550

1,600

1,810

1,960

-

69,200

2 507

157^500

July

288

210

155

135

153

135

124

96

79

63

60

68

63

74

107

92

17,330

559

34,370

Aug.

133

141

141

149

162

162

165

195

162

152

165

206

*199

249

274

301

4,407

142

8,740

Sept.

225

210

178

22T

233

218

214

206

188

206

188

185

192

195

206

-

7,584

253

15,040

The season Ae-ft 550,800

* Discharge measurement made on this 

Note. Result of discharge measuremet

day.

it, 981 cfs Apr. 30.
38 HENRYS PORK BASIN

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

Between Ashton and St. Anthony gaging stations, seven canals divert water from Henrys 

Pork for irrigation. Records available each irrigation season from 1919 to 1957. Discharge of canals computed from daily or twice-weekly staff-gage readings, or interpolated, and combined to show total diverted flow. Records good.

Discharge, in cubic feet per second, 1957

Day

2

3

4

5 

6

7

8

9

10

11

12

13

14

15

May

670

803

813 

819 

832

806

811

869

994

981

932

895

892

886

June

1,300

1,080

1,400 

1,510 

1,446

1,510

1,430

1,460

1,430

1,410

1,400

1,370

1,320

1,210

July

1,090

1,120

1,150 

1,110 

1,190

1,180

1,210

1,280

1,280

1,240

1,160

1,170

1,170

1,180

Aug.

1,250

1,290

1,300 

1,250 

1,250

1,030

1,220

1,210

1,200

1,260

1,260

1,250

1,170

1,130

Sept.

708

703

603 

654 

664

674

661

707

703

689

681

673

658

662

Day

17

18

19 

20

21

22

23

24

25

26

27

28

29

30

31

Total ..............................................

May

807

810

806 

805 

791

736

738

729

795

857

960

1,040

961

946

1,050

26, ODD

52,290

June

1,140

1,080

1,140 

1,200 

1,110

1,060

999

1,030

1,010

1,010

1,080

1,160

1,200

1,180

73,470

July

1,240

1,400

1,350 

1,330 

1,220

1,180

1,270

1,270

1,310

1,360

1,340

1,240

1,190

1,250

1,320

75,750

Aug.

1,110

1,030

1,040 

961 

345

898

861

849

847

884

887

914

887

884

920

33,387

66,220

Sept.

550

659

668 

681 

635

599

534

579

560

566

572

574

564

560

19,131

37,950

The season:

Henrys Pork at St. Anthony, Idaho

Location. Lat 43°58'00", long 111°40'20", in NW£ sec. 6, T. 7 N., R. 41 E., on right bank 

hair a mile upstream from bridge on main street of St. Anthony and 6 miles downstream 

from Pall River.

Drainage area. 1,770 sq mi, approximately.

Records available. March 1919 to September 1957 (irrigation seasons only).

Gage.--Water-stage recorder. Datum of gage is 4,950.7 ft above mean sea level, datum of 

~^T929. March 1919, to May 7, 1922. sbaff gages and May 8, 1922, to Aug. 14, 1931, 

water-stage recorder, at site 150 fb downstream at datum 0.08 ft lower.

Extremes.--Maximum discharge during season, 8,070 cfs May 12 (gage height, 6.49 ft); mini- 

 mum, 776 cfs July 17 (gage height, 3.20 ft).

1919-57: Maximum discharge recorded, 9,030 cfs May 8, 1925 (gage height, 6.78 ft, 

present datum); minimum daily recorded, 413 cfs July 22, 1931.

Remarks.--Records excellent. Diversions above station for irrigation. Flow regulated 

by^owerplant 17 miles above station and by Henrys Lake (see p. 43); Island Park 

Reservoir (see p. 33), and Grassy Lake (see p. 43).

Revisions.--WSP 1217: Drainage area.

Rating table, Apr. 30 to Sept. 30, 1957 (gage height. In feet, 

and discharge, in cubic feet per second)

3.2 

3.5

4.0

740

1,040

1,760 6.

Discharge, In cubic feet per

Day

1 

2 

3

4

5

6

7

a

9

1011

12

13

14

15

May

2.060 

2,750 

2,960

3,370

4,760

4,650

4,220

5,150

5,240

5,330

5,520

7,E7Q 

6,690

*6,760

6,660

June

4,840 

4,950 

5,520

5,360

5,090

5,060

5,010

4,680

4,380

4,300

4,100

3,770 

*3,490

3,410

3,250

July

2.770 

2,420 

2,330

2,150

1,830

1,420

1,440

1,260

1,150

1,100

1,320

1,290 

1,280

1,170

1,170

Aug.

1,150 

1,100 

1,100

1,110

1,140

1,160

1,250

1,120

1,110

1,100

1,290

1,240

1,320

1,380

1,340

Sept.

1,710 

1,580 

1,620

1,620

1,570

1,490

1,360

1,260

1,260

1,260

1,300

1,300 

1,320

1,280

1,340

Day

16 

17 

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Runoff In acre-feet. ...................................

May

,960 

,460 

,300

,770

,080

>,790

,400

,780

,490

,430

,410

,520 

,650

,730

,780

,870

311,000

June

2,850 

2,620 

2,140

2,070

2,130

2,900

3,120

2,980

2,710

2,620

2,620

2,540 

2,370

2,560

2,860

200 , 800

July

996

812 

1,080

1,300

1,340

1,440

1,210

*1,160

1,090

1,080

1,060

1,150 

1,090

1,240

1,110

1,170

84,150

Aug.

1,360 

1,290 

1,240

1,360

1,360

*1,400

1,470

1,400

1,380

1,360

1,350

1,360 

1,360

1,500

1,580

1,710

1,303

80,110

Sept.

1,380 

1,410 

1,470

1,600

1,660

1,630

1,400

1,280

1,220

*1,210

1,220

1,210 

1,190

1,100

1,100

1,378

82,020

3,870

6,790

7,430

econd, 1957

The season: Max ______Bin ______Mean 

* Discharge measurement made on this day.

Note.--Result of discharge measurement, 2,230 cfs Apr. 30.
HENRYS FORK BASIN 39

Teton River near Tetonia, Idaho

Location.--Lat 43 0 51' , long 111 0 15' , in sec. 15, T. 6 N., R. 44 E., on right bank if miles 

downstream from highway bridge, 4 miles downstream from packsaddle Creek, and 6 miles 

northwest of Tetonia.

Drainage area. 471 sq mi.

Records available. October- 1929 to December 1932, May to September 1934, July to September 1935, July to September 1936, July to September- 1937, May to September 1940, June 

1941 to October 1957 (discontinued). Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder-. Datum of gage Is 5,910.3 ft above mean sea level, unadjusted. 

;?Ince November 1941, supplemental staff gage at site if miles upstream.

Average discharge.--19 years (1929-32, 1941-57), 393 cfs (284,500 acre-ft per year).

Extremes. Maximum discharge during year, 1,800 cfs June 7 (gage height, 2.75 ft); minimum daily, 173 cfs Jan. 27 to Feb. 6.

1929-32, 1934-35, 1940-57: Maximum discharge observed, 1,900 cfs June 28, 1945 

(gage height, 2.97 ft); minimum observed, 62 cfs Jan. 16, 17, 1943.

Remarks. Records good except those for periods of Ice effect or no gage-height record, 

which are fair. Many diversions from tributaries above station for irrigation.

Revisions. WSP 1217: Drainage area.

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

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

Total

Mean

Ac-ft

Oct.

349

339

334

329

339

334

334

329

334

344

339

339

344

354

344

334

329

329

329

334

329

319

324

364

349

359

443

443

392

*364

370

10,796

348

21,410

Nov.

359

340

330

324

324

344

414

397

380

380

402

386

364

340

320

326

350

330

290

260

290

290

285

280

280

280

275

273

*272

270

9,755

325

19,350

Dec.

265

265

260

260

255

255

255

255

255

255

255

255

255

255

255

255

250

235

220

*205

205

205

205

205

205

205

205

205

205

205

205

7,275

235

14,430

Jan.

205

205

205

198

195

195

195

195

195

195

195

195

195

195

195

190

190

190

190

190

190

190

190

190

185

175

173

173

173

173

173

5,893

190

11,690

Feb.

173

173

173

173

173

173

178

180

190

195

200

200

200

200

200

205

205

210

210

220

220

220

250

380

620

710

790

740

-

7,761

277

15,390

Mar.

560

443

380

330

300

*266

265

295

419

550

345

340

280

240

246

246

246

246

260

300

350

280

230

225

2_20

220

220

230

280

443

460

9,715

313

19,270

Apr.

440

360

360

360

360

370

370

360

350

386

431

*460

502

552

564

515

484

466

431

419

408

402

419

443

397

392

375

359

349

339

12,423

414

24,640

May

344

339

339

364

419

414

425

448

460

490

496

738

787

661

710

*655

615

628

717

815

984

910

738

682

661

642

642

703

837

992

1.140

19,795

639

39,260

June

1,280

1,390

1,460

1,580

1,640

1,730

1.780

1,740

1,600

1,500

1,340

1,210

*1,110

1,090

1,010

962

939

801

731

724

954

1,010

902

844

844

902

917

1,010

1,100

1,210

35,310

1,177

70,040

July

1,300

1,310

1.520

1,260

1,210

1,130

1,130

1,100

1,020

1,000

*1,030

1,130

1,090

1,030

1,030

977

947

902

866

880

895

858

815

766

731

689

682

648

~SSS 642 

655

29,698

958

58,910

Aug.

635

609

596

596

583

570

552

552

545

533

527

*533

527

521

515

527

515

496

478

466

466

466

466

466

460

472

496

496

521

521 

515

16,221

523

32,170

Sept.

545

527

496

472

460

448

443

437

425

425

*425

419

414

414

408

408

402

397

425

443

443

425

414

402

397

380

380

370

370

364

12,778

426

25,340

Calendar year 1956: Max 1,570 Kin 160 Mean 449 Ac-ft 325,800

Water year 1956-57: Max 1,780 Kin 173 Mean 486 Ao-ft 351,900

Discharge, In cubic feet per second, 1957

. 1................................. 364

2................................. 364

3................................. 375

4................................. 431

Discharge measurement made on this day.

Oct. 5. 419

392

380

*375
40 HENRYS FORK BASIN

Teton River near St. Anthony, Idaho

Location.--Lab 43°55'40", long 111°36'55", in SW£ sec. 15, T. 7 N., R. 41 E., on right 

bank half a mile upstream from railroad bridge and 4 miles southeast of St. Anthony.

Drainage area. 890 sq mi, approximately.

Records available. January 1890 to September 1893, April 1903 to June 1909, April 1920

 to September 1957 (irrigation seasons only, 1920-21, 1923-33). Monthly discharge only 

for some periods, published in WSP 1317. Published as "near Wilford" or "at Chases 

Ranch" 1890-93.

Gage. Water-stage recorder. Datum of gage is 4,971.8 ft above mean sea level, datum of 

"JT929. Apr. 5, 1890, to Sept. 30, 1893, staff gage at site 1 mile downstream at different datum. Apr. 23, 1903, to June 30, 1909, staff gage at site three-quarters of a 

mile upstream from present site at different datum. Apr. 19, 1920, to May 1, 1921, 

staff gage and May 2, 1921, to Nov. 5, 1933, water-stage recorder, at site 400 ft downstream from present site at different datum.

Average discharge.--24 years (1933-57), 763 cfs (552,400 acre-ft per year).

Extremes.--Maximum discharge during year, 4,660 cfs June 6 (gage height, 7.03 ft); mini-

 mum, 311 cfs Mar. 14 (gage height, 1.83 ft).

1890-93, 1903-9, 1920-57: Maximum discharge observed, 5,830 cfs June 13, 1893 

(gage height, 6.90 ft, site and datum then in use); minimum, 214 cfs Dec. 15, 1955 

(gage height, 1.62 ft).

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

About 40,000 acres of land irrigated from diversions above station. Water is diverted 

at times during irrigation season from Henrys Fork through Cross Cut Canal to Teton 

River three-quarters of a mile above station (4,450 acre-ft diverted into river during 

1957 irrigation season).

Revisions (water years). WSP 1217: Drainage area. WSP 1347: 1903-6, 1908-9.

Rating table, water year 1956-57, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used June 28 to Sept. 30)

1.9 

2.5 

3.0 

4.0

337

635

965

1,750

5.0 

6.0 

7.0

2,610

3,520

4,600

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

683

665

665

653

653

647

629

618

*572

589

584

572

578

589

584

567

556

545

534

540

534

540

550

595

601

601

671

659" 702

624

635

18,735

604

37,160

Nov.

618

572

518

556

556

562

612

624

65T

601

606

618

595

578

518

534

562

508

458 

450

«517

470

470

465

460

460

455

455

450

450

15,899

530

31,540

Dec.

450

450

445

445

440

440

430

430

435

440

448

448

448

448

448

448

416

420

434 

*407

402

385

388

390

390

390

390

395

395

395

395

13,085

422

25,950

Jan.

395

390

385

385

380

375

375

375

375

375

378

380

390

385

380

378

375

375

375 

375

372

372

372

372

»369

350

350

350

350

360

365

11,583

374

22,970

Feb.

365

365

365

365

365

365

370

380

380

380

380

380

380

390

400

405

410

415

420 

425

430

420

467

606

839

972

*1.060

986

-

13,485

482

26,750

Mar.

786

659

612

556

523

482

463

492

629

760

545

550

477

439

463

453

463

458

477 

513

567

492

448

434

434

434

420

425

458

534

618

16,064

518

31,860

Apr.

641

572

*578

567

556

702

671

578

572

665

740

754

695

760

799

766

714

708

665 

624

606

606

612

734

624

601

572

550

550

601

19,383

646

38,450

May

653

708

839

965

1,210

1,270

1,370

1,600

1,550

1,560

1,690

2,120

2,340

* 1,990

1,950

1,870

1,690

1,750

1,960 

2,340

2,290

2,040

1,670

1,510

1,500

1,540

1,840

2,230

2,630

2,900

3,260

54,835

1,769

108,800

June

3,420

3,720

4,060

4,300

*4,420

4,500

4,550

4,300

4,070

3,770

3,420

3,060

2,790

2,510

2,200

1,950

1,810

1,590

1.500 

1,620

2,100

2,180

1,890

1,790

1,910

*1,920

1,920

2,110

2,330

2,490

84,200

2,807

167,000

July

2,580

2.650

2,500

2,370

2,120

1,950

1,950

1,830

1,700

1,650

1,620

1,780

1,680

1,610

1,580

1,490

1,420

1,340

1,290 

1,310

1,320

1,260

* 1,190

1,140

1,100

1,060

1,040

1,020

1,000

1,040

1,060

48,630

1,569

96,460

Aug.

1,060

1,050

1,010

986

979

965

951

937

909

895

888

895

909

888

874

888

860

832

818 

786

*766

773

773

773

760

760

806

792

825

860

860

27,128

875

53,810

Sept.

881

874

806

740

708

689

677

665

653

647

647

641

641

635

629

618

612

618

635

671

677

665

653

641

*635

635

629

624

618

618

20,082

669

39,830

Calendar year 1956: Max 3,690 Min 264 Mean 893 Ac-ft 648,600

Water year 1956-57: Max 4,550 Mln 350 Mean 940 Ao-ft 680,600

* Discharge measurement made on this day.

Mote. Stage-discharge relation affected by Ice Nov. 20 to Dec. 14, Dec. 22 to Feb.
HENRYS FORK BASIN 41 

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

Between St. Anthony gaging station and mouth, 19 canals divert water from Teton River 

for irrigation of 30,000 acres of land. Records available for part of each Irrigation 

season from 1919 to 1957. Discharge of canals computed from daily or twice-weekly staffgage readings, or Interpolated, and combined to show total diverted flow. Records good.

Discharge, in cubic feet per second, 1957

Day

1

2 

3

4

5

6

7

£

9

10

11 

12

13

14

15

Total

May

199

293 

273

314

311

373

440

480

481

480

489 

474

466

495

510

June

1,010

1,070 

1,250

1,300

1,370

1,520

1,470

1,450

1,440

1,380

1,330 

1,330

1,290

1,250

1,200

July

1,320

1,570 

1,300

1,290

1,300

1,360

1,240

1,200

1,280

1,300

1,260 

1,370

1,320

1,250

1,220

Aug.

1,040

1,060 

1,030

1,020

983

980

980

978

972

985

1,000 

1,000

992

898

921

Sept.

751

785 

7BT

690

649

634

627

605

614

666

650 

634

603

613

594

Day

16

17 

18

19

20

21

22

23

24

25

26 

27

28

29

SO

31

Mean

May

536

528 

467

477

488

501

480

487

474

455

522

567

535

628

655

767.

29,050

June

1,120

1,030 

979

1,000

1,070

1,200

1,200

1,100

1,120

1,120

1,180 

1,160

1,250

1,330

1,320

-

73,070

July

1,180

,180 

,140

,090

,180

,160

,140

1,110

1,100

1,100

1.050 

1,090

1,090

1,090

1,080

1,170

74,040

Aug.

899

888 

878

865

850

836

870

853

836

823

821 

852

844

853

862

753

28,422

56,370

Sept.

572

581 

567

403

438

631

633

578

591

572

577 

509

506

479

447

-

17,966

35,640

The season; Max - Ac-ft 268,200

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 

Pork for irrigation. Records available for part of each Irrigation season from 1919 to 

1957. Discharge of canals computed from dally or twice-weekly staff-gage readings, or 

interpolated, and combined to show total diverted flow. Records good.

Discharge, In cubic feet per second, May 1957 to September 1957

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

Total

Mean

Ac-ft

Oct. Nov. Dec. Jan. Feb.

-

Mar. Apr. May

805

886

935

960 

985

1,010

885

960

976

1,020

951

873 

875

845

847

858

860

848

822

793

775

760

75o

794

840

861

916

1,040

1,060

1,090

1.110

28,020

904

55,580

June

1,150

1,200

1,290

1.540 

1,340

1,240

1,150

1,140

1,090

1,030

1,060

1,070 

997

936

905

853

840

860

869

787

856

852

814

799

745

654

7T5

762

805

807

28,920

964

57,560

July

844

855

818

815

847

859

836

832

900

956

1,050

1.050 

970

876

895

896

775

852

968

963

942

898

856

840

902

939

958

940

741

Q99

900

27,608

891

54,760

Aug.

859

859

857

879 

867

867

903

564

881

885

889

802 

789

799

753

779

785

726

729

727

732

679

657

657

679

672

670

678

645

cq-z °fJ

6l5

25,734

766

47,080

Sept.

567

568

575

580 

590

604

155

588

595

588

590

566 

520

528

527

535

526

538

522

503

436

436

428

408

415

411

588

585

579

575

15,260

509

30,270

The season: Max - Ac-ft 245,000

503667 O - 59 -4
42 HENRYS FORK BASIN

Henrys Fork near Rexburg, Idaho

Location. Lat 43°49'34", long 111°54'15", in NE£ sec. 30, T. 6 N., R. 39 E., on right 

bank 200 ft downstream from highway bridge and 6 miles west of Rexburg.

Drainage area. 2,920 sq mi, approximately.

Records available.--April 1909 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317. Prior to 1911, published as North Fork of Snake 

River near Rexburg.

Gage. Water-stage recorder. Datum of gage is 4,807.7 ft above mean sea level, datum of 

1929. Apr. 13, 1909, to Sept. 28, 1912, staff gage at datum 0.67 ft higher. Sept. 29, 

1912, to Apr. 4, 1913, staff gage at present datum.

Average discharge. 48 years, 1,920 cfs (1,390,000 acre-ft per year).

Extremes.--Maximum discharge during year, 8,680 cfs May 22 (gage height, 9.63 ft); minimum, 1,020 cfs July 27 (gage height, 3.61 ft).

1909-57: Maximum daily discharge, 9,490 cfs June 29, 1927; maximum gage height, 

9.97 ft May 19, 1927; minimum discharge, 183 cfs Mar. 24-28, 1934 (gage height, 

1.45 ft).

Remarks. Records good except those for period of ice effect, which are fair. Flow regulated by operation of powerplant near Ashton and by Henrys Lake (see following page), 

Island Park Reservoir (see p. 33), and Grassy Lake (see following page). Diversions 

for Irrigation of about 172,000 acres above station. Part of return flow escapes 

westward beneath the Snake River plains above gaging station.

Revisions. WSP 1217: Drainage area.

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 

2

5

4

5

6

7

8 

9

10

11

12

15

14

15

16

17

18 

19 

20

21

22

25

24

25

26

27 

28

29

50

51

Total

Mean

Ao-ft

Oct.

1,650 

1,620

1,570

1.550

1,580

1,590

1,580

1,540 

1,550 

1,610

1,660

1,650

1,640

1,700

1,720

1,820

1,800

1,820 

1,850 

1,890

1,850

1,840

2,060

2,200

2,190

2,200

2,580 

2,550

2,410

2,540

2,370

57,720

1,862

114,500

Nov.

2,400 

2,350

2,980

5,270

5,450

5,500

5.520

3,320 

3,280 

5,250

5,140

5,010

2,800

2,720

2,270

 2,050

1,900

1,940 

1,740 

1.550

1,350

1,520

1,690

1,750

1,760

1,750

1,710 

1,650

1,610

1,580

70,530

2,351

159,900

Dec.

1,600 

1,660

1,660

1,690

1,690

1,700

1,490

1.580 

1,490 

1,520

1,560

1,710

 1,810

1,820

1,730

1,690

1,700

1,880 

1.950 

1,950

1,820

1,830

1,870

1,900

1,880

1,830

1,800 

1,850

1,850

1,800

1,650

55,680

1,752

106 , 500

Jan.

1,500 

1,400

1,400

1,420

1,580

1,550

1,550

1,550 

1,400 

1,350

 1,280

1,280

1,330

1,390

1,400

1,350

1,280

1.200 

1,230 

1,500

1,350

1,550

1,580

1,580

1,570

1,500

1,250 

1,400

1,670

1,680

1.700

42,750

1,579

84,790

Feb.

1,750 

1,750

1,750

1,750

1,700

1,700

1,720

1,700 

1,750 

1,750

1,710

1,750

1,850

1,830

1,880

1,900

1,880

1,890 

1,900 

1,920

 1,950

2,000

2,050

2,150

2,300

2,550

2,650 

2.850

-

54,310

1,940

107,700

Mar.

 5.210 

2,640

2,480

2,340

2,280

2,220

2,160

2,130 

2,190 

2,510

2,310

2,180

2,160

2,060

1,980

1,960

1,890

1,870 

1,850 

1,850

1,890

1,880

1,800

1,750

1,800

1,790

1,720 

1,610

1,540

1,570

1,580

62,980

2,052

124,900

Apr.

1,620 

1,590

 1,510

1,940

1,800

1,660

1,760

1,700 

1.250 

1,280

1,620

1,690

1,680

1,590

1,680

1,730

1,730

1,790 

1,810 

1,750

1,720

1,730

1,750

1,960

2.090

1,890

1,900 

1,630

1,630

1,900

51,580

1,715

101,900

May

1,820 

1,870

2,580

2,510

5,520

4,220

4,610

 4,690 

5,350 

5,800

6,210

6,860

 8,070

8,320

8,380

8,280

7,960

7,640 

7,620 

7,960

8.590

8,590

7,940

6,880

5,910

5,490

 5,240 

5,250

5,560

5,550

5,720

184,570

5,954

566,100

June

5,840 

5,880

6,030

6,420

6,610

6,520

6,630

6.700 

6^450 

6,210

6,050

5,730

5,290

4,950

4,680

4,250

3,910

3,430 

2,900 

 2.590

3,030

3,850

4,200

4,050

3,700

5,740

5,740 

3,540

3,500

3,820

144,220

4,807

286,100

July

4.060 

4,000

3,810

5,580

3,290

2,610

2,170

2,140 

1,790 

1,520

1,450

 1,690

1,760

1,780

1,650

1,490

1,280

1,160 

1,330 

1,540

1,660

1,770

1,490

1,290

1,210

1,080

1,060 

1,680

1,110

1,220

1,160

58,230

1,878

115,500

Aug.

1,180 

1,240

1,190

1,140

1,200

1,200

1,240

1,200 

 1.110 

1,120

1,210

1,460

1,510

1,620

1,610

1,600

1,670

1,540 

1,590 

1,610

1,550

1,690

1,710

1,700

1,650

1,610

1,570 

 1,580

1,700

1,860

2,060

45,920

1,481

91,080

Sept.

2.260 

2,210

2,110

2,060

1,920

1,760

1,660

1,500 

1,430 

1,400

1,430

1,440

1,460

1,460

1,420

1,560

1,520

1,560 

1,660 

1,920

1,940

1,830

1,610

1,540

 1,460

1,470

1,470 

1,440

1,400

1.350

49,250

1,642

97,690

Calendar year 1956; Max 5,910 Mln 797 Mean 2,162 Ac-ft 1,570,000

Water year 1956-57: Max 8,590 Mln 1,060 Mean 2,399 Ac-ft 1,757,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 24 to Feb. 28 (no gage-height record Jan. 31 

to Feb. 13, Feb. 15-19j discharge estimated on basis of 3 discharge measurements, weather records, 

and records for stations at Henrys Fork near Ashton, Teton River near St. Anthony, and Fall River 

near Squirrel) .
HENRYS FORK BASIN 43 

Smaller reservoirs in Henrys Fork basin

Henrys Lake. Lat 44°36' , long 111 0 21', in N¥£ sec. 26, T. 15 N. , R. 43 E at dam on 

Henrys Fork, 4 miles south of former Lake, Idaho, post office. Drainage area 96 sq mi 

approximately, including 6 sq mi of Dry Creek basin. Records available, June 1923 to 

September 1957 (fragmentary). Staff gage. Datum of gage is 6,457.16 ft above mean 

sea level (levels by Bureau of Reclamation). Maximum contents observed during year, 

85,100 acre-ft June 14 (gage height, 15.90 ft); minimum, 68,300 acre-ft Sept. 18 

(estimated from outflow record). Maximum contents observed during period 1923-57 

that of June 14, 1957; minimum observed, 140 acre-ft Nov. 8, 1934 (gage height, 0.03 ft) .

Reservoir is formed on natural lake by concrete dam; storage began Sept 81 1922- 

dam completed July 1923. Capacity 79,351 acre-ft between gage heights 0.0 (low-water 

level of Henrys Lake prior to construction of dam) and 15.0 ft (top of 5-ft flashboards on spillway). Floodwaters of Dry Creek are diverted into Henrys Lake at times 

(none diverted during water year 1957). Water used for irrigation near St. Anthony. 

Gage read occasionally. Records given herein represent usable contents, except an 

allowance is usually made of 3,000 acre-ft for loss and dead storage from maximum contents. Capacity table furnished by North Pork Reservoir Co.

Grassy Lake. Lat 44°08', long 110°49 I , approximately in sec. 7, T. 48 N., R. 116 W. 

lunsurveyed), in gatehouse at dam on Grassy Creek half a mile upstream from mouth and 

24 miles northwest of Moran, Wyo. Drainage area 12 sq mi, approximately, including 

basin of Cascade Creek, from which water is diverted into Grassy Lake. Records available, October 1939 to September 1957. Mercury pressure gage. Datum of gage is at 

mean sea level (levels by Bureau of Reclamation). Maximum contents observed during 

year, 15,260 acre-ft June 14 (elevation, 7,210.25 ft); minimum observed, 11,860 aere-ft 

Aug. 29, Sept. 5 (elevation, 7,198.85 ft). Maximum contents observed during period 

1939-57, 15,446 acre-ft July 2, 1943 (elevation, 7,210.85 ft); no contents Oct. 2-5, 

1940.

Reservoir is formed by earth-fill, rock-faced dam: storage began Oct. 18, 1939 

Capacity, 15,182 acre-ft between elevations, 7,135.0 (sill of trash rack) and 2,210.0 

ft (crest of spillway). Water is used for irrigation of lands in Fremont-Madison 

irrigation district, Idaho. Gage read about twice monthly. Records given herein 

represent usable contents. Gage-height record and capacity table furnished bv Bureau 

of Reclamation.

Month-end elevation and usable contents, water year October 1956 to September 1957

Date

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

Calendar year 1956 ...............

Water year 1956-57 ...............

Contents (acrefeet)Change In 

contents 

(acre-feet)

Henrys Lake

a68,900 

a70,700 

a72,700 

874,000

-

874,700 

a75,600 

876,800 

879,300 

883,500 

B83.300 

877,700 

870,400 

868,800

-

+1,800 

+2 , 000

+1,300

+14,900

+700 

+900 

+1,200 

+2 , 500 

+4 , 200 

-200 

-5,600 

-7,300 

-1,600

-100

Elevation 

(feet)

Contents (acrefeet)Change In 

contents 

(acre-feet)

Grassy Lake

7,203.30 

7 , 203 . 10

-

7 , 205 . 05

7,205.75

7,208.00

-

13,100 

a!2,900 

13,090 

813,250

-

B13.420 

13,670 

13,880 

813,950 

a!4,850 

al5,230 

14,560 

811,860 

all, 860

-

-200 

+190 

+160

+1,250

+170 

+250 

+210 

+70 

+900 

+360 

-670 

-2,700 

0

-1,240

a Ho gage-height record; contents Interpolated.
44 SNAKE RIVER MAIN STEM

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

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

irrigation; of these 36 divert above mouth of Henrys Pork. Records available during each 

irrigation season from 1919 to 1957. One of the canals is equipped with a water-stage 

recorder, the others with staff gages, which are read once daily. Discharge combined to 

show total diverted flow. Records include Riley ditch which diverts l| miles above Heise 

gaging station. Records good.

Discharge, In cubic feet per second, 1957

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

May

439 

522

519

619

662

820

,050

,360

,280

,500

,880

,930

,620

,660

,780

June

5.510 

5,460

4,090

4,640

5,510

6,740

7,740

8,570

8,680

9,500

9,690

9,750

9,400

9,480

9,120

July

9,530 

9,590

9,740

9,710

9,860

10,000

10, 100

10,400

10,500

10,500

10,400

10,200

9,600

9,450

9,530

Aug.

9,810 

9,780

9,680

9,400

9,480

9,340

9,260

9,080

9,050

8,900

8,770

8,690

8,400

8,300

8,140

Sept.

,680 

,840

>,760

,800

,88O

,180

,380

,510

,340

,280

,510

,280

,200

6,830

6,900

Day

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total. ............................ .....

Runoff In acre -feet ................................

May

,820 

,960

,900

,910

,920

,94O

,800

,790

,820

,860

2,090

2,580

2,460

2,540

2,800

2.890

102,200

June

7,960 

7,900

7,860

8,050

7,840

8,100

7,640

7,250

7,250

7,520

7,550

7,970

8,450

8,640

8,870

-

452,000

July

9,980 

10,300

1O.2OO

10,200

10.0OO

9,810

9,950

9,950

9,980

10,100

10,200

10,200

9,990

9,820

9,500

9,500

9 935

610,800

Aug.

8,050 

,970

,720

,990

,940

,910

,790

,700

,670

,400

,540

,560

,490

,300

,190

,990

512,500

Sept.

6,970 

6,840

6,850

6,690

6,370

6,180

6,030

5,940

5,740

5,740

5,560

5,370

5,300

5,050

4,520

-

587,800

Snake River near Shelley, Idaho 

Location. Lat 43°24'50", long 112°08'05", in SW£ sec. 17, T. IN., R. 37 E., on right

bank a quarter of a mile southeast of Woodville and 2j miles north of Shelley. 

Drainage area. 9.790 sq mi, approximately, excluding nontributary area on Snake River

plains. 

Records available . March 1915 to September 1957 (prior to October 1931, irrigation seasons only). 

Gage. Water-stage recorder. Datum of gage is 4,599.0 ft above mean sea level, datum of

1929.

Average discharge. 26 years (1931-57), 5,292 cfs (3,831,000 acre-ft per year). 

Extremes. Maximum discharge during year, 22,300 cfs May 23 (gage height, 11.06 ft); minimum daily, 1,780 cfs Jan. 21; minimum gage height, 5.16 ft Jan. 19.

1915-57: Maximum discharge, 47,200 cfs June 17, 1918 (gage height, 16.97 ft); minimum, 288 cfs Nov. 5, 1934 (gage height, 2.22 ft).

Maximum discharge known, 72,000 cfs (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, which are good. Some

regulation by Jackson Lake (see p. 13), Palisades Reservoir (see p. 29), Island Park

Reservoir (see p. 33), Henrys and Grassy Lakes (see preceding page). Many diversions

above station for irrigation.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

3,280 

3,170

3,110

2,930

2,870

2,870

2,830

2,800

2.780

2,780

2,830

3,030

3,090

3,190

3,280

3,500

5,520

5,520

5,520

5,560

3,320

3,360

3,300

5,680 

5,960

4,140

4,510 

4,680

4,820

4,760 

4,760

106,550

5,457

211,500

Nov.

4,910 

5,000

4,940

5,190

4,040

5,820

3,790

3,720

3,520

5,470

5,450

3,360

3,240

3,220

*5,050

3,170

3,220

3,360

3,400

2.950

3,070

2,950

3,280

3,360 

3,450

3,470

3,450 

5,410

5,450

5,390

108,040

3,601

214,300

Dee.

3,340 

3,300

3,410

3,430

3,430

3,440

3,080

3,150

3,000

3,200

3,450

*5,470

5,680

5.790

3,700

3,560

5,450

3,400

5,460

3,560

3,300

3,040

2.500

2,900 

3,100

3,250

3,080 

2,700

2,700

2, 800 

2,570

100,200

3,252

198,700

Jan.

2,650 

2,650

2,520

2,640

2,600

2,250

2,040

2,300

2,180

2,180

2,350

2,400

2,650

2,780

2,750

2,520

2,260

2,040

1,800

1,850

1.780

1,630

2,200

2,300 

2,300

2,180

2,100 

2,000

1,830

2,000 

2,200

69,930

2,256

158,700

Feb.

2,250 

2,300

2,500

2,550

2,700

2,800

2,850

2,900

3,000

2,950

3,000

3,100

3,100

3,050

3,200

3,300

3,400

5,500

3,450

3,400

3,450

3,550

3,960

4,600 

4,240

4,910

5,630 

5,860

95,500

3,411

189,400

Mar.

5,790 

5,600

5,100

4,700

4,400

4,250

*5,770

3,870

3,820

3,890

3,990

3,870

3,940

4,110

5,950

5,950

5,860

5,920

5,950

5,950

6,150

6,850

6,850

6,830 

6,670

7,030

7,100 

6,630

5,350

5,190 

5,150

166,440

5,569

330,100

Apr.

5,250 

5,150

5,150

5,150

5,310

5,250

5,060

5,060

5,050

5,280

5,600

5,920

5,950

5,890

5,670

*6,210

6,800

6,930

7,050

7,030

6,930

6,950

6,540

5,600 

6,400

8,660

9,120 

9,180

9,150

9.610

192,840

6,428

582,500

May

9,830 

9,830

9,470

8.510

8,350

9,260

13,300

17,100

17,500

17,600

18,000

18,900

18,700

19,700

21,200

21,400

21,000

20 , 600

20 , 300

20,200

20 , 800

22 , 000

22.200

21 , 000 

19,700

18,500

*18,500 

18,500

18,500

17,800 

17,400

555,250

17,270

tl,062

June

16,600 

14 , 600

13,500

12,800

11,800

10,300

10,700

12,400

12,200

*11,500

14,900

14,000

11,100

9,040

9,080

8,840

8,560

7,940

7,060

6,670

7,060

8,280

9,220

9,430 

8,840

8,580

8,010 

7,590

6,900

6,960

504,060

10,140

605,100

July

7,500 

7,330

6,900

6,670

6,150

5,510

5,000

5,030

5,090

4,790

4,880

5,380

6,270

6,600

6 ,210

4,970

*4,740

5,030

5,150

5,510

5,860

5,860

5,280

4,760 

4,630

4,660

4,570 

4,910

5,280

5,440 

5,760

171,720

5,559

540,600

Aug.

5,150 

4,940

5,060

5,310

5,410

4,970

4,820

5,000

5,030

4,820

4,970

5,120

5,090

4,970

4,940

*4,680

4,550

4,490

4,290

4,520

4,520

4,490

4,240

4,080 

4,260

4,360

4,180 

4,180

4,210

4,420 

4,710

145,780

4,703

289,200

Sept.

4.940 

4,910

4,490

4,110

3,820

3,110

3,030

3,520

4,240

5,770

5,540

5,720

5,870

4,110

4,260

4,240

4,160

5,820

4,110

4,260

4,420

4,420

*4,560

4,160 

5,890

5,790

5,610 

3,410

3,170

2.760

117,820

5,927

233,700

Calendar year 1956: Max 29,700 Mln 1,400 Mean 7,805 Ac-ft 5,666,000

Water year 1956-57: Max 22,200 Mln 1,780 Mean 5,792 Ac-ft 4,194,000

Discharge measurement made on this day. t Expressed In thousands. 

Note. Stage-discharge relation affected by lee Nov. 19, Dee. 6-10, Dec. 17 to Feb. 22.
HLACKPOOT RIVER BASIN 45

Blackfoot River near Blackfoot, Idaho

Location. Lat 43°07'50", long 112°28'35", at east quarter corner of sec. 28, T. 3 S., 

R. 34 E., on left bank 125 ft downstream from highway bridge, 2 miles upstream from 

mouth, and 8 miles southwest of Blackfoot.

Drainage area. 1,295 sq mi, including that of Sand Creek whose flow is diverted to 

Blackfoot River through the Idaho canal.

Records available. July 1913 to September 1957 (prior to October 1931, summer months 

only).Monthly discharge only for some periods, published in WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 4,420 ft (from river-profile survey). 

Prior to May 8, 1926, staff gages and May 8, 1926, to June 25, 1937, water-stage 

recorder, at site half a mile upstream at different datum.

Average discharge . 26 years (1931-57), 156 cfs (112,900 acre-ft per year).

Extremes.--Maximum discharge during year, 1,040 cfs May 26 (gage height, 7.04 ft)

about 1,300 cfs being lost above station to canal diversions and percolation losses; 

minimum, 4 cfs July 12, 13 (gage height, 1.21 ft).

1913-57: Maximum discharge, that of May 26, 1957; no flow for many days.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Flow regulated by Blackfoot-Marsh Reservoir (capacity at spillway 

crest, 312,000 acre-ft, and maximum capacity with flashboards, 413,000 acre-ft). Many 

diversions above station for irrigation. Most of flow during nonirrigation season and 

part of that during irrigation season is supplied by waste from Snake River canals.

Cooperation.--Gage-height record furnished by Office of Indian Affairs. 

Revisions. WSP 1217: Drainage area.

Discharge, in cubic feet per second, waber year October 1956 to September 1957

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

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

138

154

144

90

 75

86

73

41

62

58

92

144

209

234

227

210

206

189

184

159

129

117

94

106

164

221

318

431

466

457

433

5,711

184

11,330

Nov.

400

328

472

447

427

386

369

360

353

344

335

327

320

312

*304

306

359

339

285

285

220

195

?6T

293

286

247

256

265

271

241

9,593

320

19,030

Dec.

266

289

293

23T

231

206

192

158

126

151

164

*170

171

168

166

164

163

163

178

164

146

137

116

91

86

84

82

80

79

76_

4,869

157

9,660

Jan.

75

74

73

*72

1 75

*77

77

2,323

74.9

4,610

Feb.

> 80

120

200

400

600

*620

562

500

-

4,682

167

9,290

Mar.

575" 381

251

245

240

235

231

235

249

256

203

200

200

> 140

5,716

184

11,340

Apr.

180

*181

163

170

163

205

270

278

244

226

253

259

235

292

322

370

433

478

516

516

470

439

460

522

632

678

675

533

569

660

11,392

380

22,600

May

*750

763

760

758

758

765

*802

815

815

830

836

859

893

924

937

947

945

942

942

934

950

992

1,020

*1,030

1.040

1,040

1,030

1,020

986

960

908

27,951

902

55,440

June

656

621

367

*340

207

53

38" 16

57

84

73

72

67

*100

163

155

137

153

146

110

110

127

132

134

108

92

98

64

*51

40

4,571

152

9,070

July

42

16

 10

18

16

8

20

10

11

30

16

32

48

38

55

26

16

12

*23

28

35

31

23

27

21

11

10

28

45

49

*35

788

25.4

1,560

Aug.

29

46

63

68

81

59

44

44

31

21

32

70

94

45

44

53

*39

47

47

35

52

53

51

43

23

24

34

52

35

40

*43

1,442

46.5

2,860

Sept.

74

66

42

40

48

35

27

25

59

67

54

52

42

48

61

71

61

32

 38

61

108

130

137

176

149

118

117

88

72

66

2,164

72.1

4,290

Calendar year 1956: Max 607 Min 1 Mean 152 Ac-l't 110,600

Water year 1956-57: Max 1,040 Min 8 Mean 222 Ac-ft 161,100
46 SNAKE RIVER MAIN STEM

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

Between Shelley and Blackfoot gaging stations, 13 canals divert water from Snake River 

for irrigation of 158,000 acres of land. Records available during each irrigation season 

from 1919 to 1957. The two largest canals are equipped with recorders, the others with 

staff gages which are read once daily. Discharge combined to show total diverted flow. 

Records good.

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

May

553 

674

686

698

719

930

1,250

1,280

1,320

1,380

1,360

1,440

1,390

1,410

1,230

June

2,020 

2,200

2,640

3,040

,530

,080

,190

,320

,270

,260

,300

,310

,210

3,970

3,460

July

4,100 

4,160

3,710

3,530

4,090

4,090

4,000

3,780

3,730

3,960

3,900

4,040

4,110

4,030

4,000

Aug.

3,890 

3,860

3,850

3,880

3,680

3,620

3,630

3,730

3,770

3,720

3,670

3,530

3,460

3,490

3,490

Sept.

3,100 

3,040

2,970

2,940

3,040

2,910

2,790

2,800

3,040

3,020

2,890

2,870

2,930

3,040

2,990

Day

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Mean. ..................................................

May

1,220 

1,210

1,170

1,100

1,070

708

452

421

807

1,090

,200

,410

,560

,650

: ,780

,890

69,540

June

3,370 

3,320

3,290

3,360

3,450

3,430

3,320

3,120

3,310

3,530

3,680

3,670

3,820

3,850

3,960

-

212,800

July

3,950 

3,950

4,050

4,030

4,050

4,070

3,810

3,900

3,930

3,840

3,930

3,940

3,950

4,050

3,990

4,020

122,690

243, 400

Aug.

3,390 

3,350

3,400

3,420

3,400

3,340

3,310

3,260

3,260

3,290

3,380

3,280

3,270

3,170

3,150

3,130

214,400

Sept.

2,950 

2,900

2,800

2,790

2,750

2,610

2,440

2,390

2,380

2,420

2,360

2,340

2,300

2,240

2,040

-

82,080

162,800

Tne season;

Snake River near Blaekfoot, Idaho

Location. Lat 43°07'35", long 112°31'25", in SE^- see. 30, T. 3 S., R. 34 E., on right 

bank 1,000 ft downstream from highway bridge, half a mile (revised) downstream from 

Blackfoot River, and 10 miles southwest of Blaekfoot.

Drainage area. 11,310 sq mi, approximately, excluding nontributary area on Snake River 

plains.

Records available. June 1910 to September 1957. Monthly discharge only for some periods, 

published in WSP 1317. Published as "at Clough Ranch, near Blackfoot" 1924-45.

Gage. Water-stage recorder. Datum of gage is 4,400.83 ft above mean sea level, datum of 

TT929 (preliminary adjustment). Prior to July 6, 1913, staff gages at practically same 

site and datum.

Average discharge. 31 years (1926-57), 4,063 cfs (2,941,000 aere-ft per year).

Extremes. Maximum discharge during year, 21,700 efs May 23 (gage height, 9.62 ft); minimum, 414 cfs Sept. 8, 9 (gage height, 0.70 ft).

1910-57: Maximum discharge, 46,200 cfs June 18, 1918 (gage height, 14.80 ft); minimum, 111 efs Nov. 10, 1934 (gage height, 0.80 ft).

Late in summer of 1905 there was no flow in Snake River for a distance of 10 miles 

in vicinity of Blaekfoot. On Aug. 9, 1905, discharge of Snake River Just below mouth 

of Blaekfoot River was 39 efs, supplied by ground-water inflow a short distance 

upstream.

Remarks. Records excellent. Flow regulated by Jackson Lake (see p. 13), Palisades Reservoir (see p. 29), Henrys and Grassy Lakes (see p. 43), Island Park Reservoir (see 

p. 33), and Blackfoot Marsh Reservoir, having a combined capacity of 2,883,000 acre-ft. 

About 694,000 acres of land irrigated by diversion above station.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total 

Mean

Ac-ft

Oct.

1,720 

1,800

1,830

1,700

*1,660

1,680

1,620

1.420 

1,450 

1,490

1,570

1,860

2,220 

2,380 

2,730

3,090

3,150

3,150

3,100

3,140

3,100

3,060

3,060 

3,270

3,620

4,000

4,290

4,630

4,920

4.940 

4,920

2,793

171,700

Nov.

4,860 

5,030

5,110

5.350

4,920

4,150

4,040

3,980 

3,840 

3,700

3,660

3,570

3,500 

3,450 

»3,320

3,370

3,550

3,590

3,660

3,430

2,970

2.700

3,000 

3,120

3,240

3,240

3,220

3,200

3,220

3,150

3,705

220,400

Dec.

3,120 

3,100

3,200

3,200

3,480

3,480

2,850

3,080 

2,820 

2,970

3,380

*3,420

3,610 

3.790 

3,700

3,570

3,420

3,380

3,470

3,550

3,300

3,020

2.450 

2,920

3,090

3,240

3,090

2,720

2,720

2,820 

2,580

3,179

195,500

Jan.

2,640 

2,630

2,510

 2,670

2,570

2,290

2,000

2,410 

2,180 

2,170

2,300

2,370

2,610 

2.790 

2,760

2,340

2,290

2,050

1,760

1,840

1,700

1,920

2,140 

2,280

2,280

2,180

2,110

2,020

1,830

*1 , 900 

2,100

2,246

138,100

Feb.

2.170 

2,220

2,440

2,410

2,610

2,760

2,780

2,860 

2,900 

2,840

2,960

3,030

2,960 

2,940 

3,100

3,090

3,210

3,340

3,290

3,300

3,350

3,430

3,730 

4,350

5,070

*4,900

5,320

5,430

-

3,314

184,000

Mar.

5,490 

5,410

4,860

4,470

4,470

4,340

4,230

3,920 

3,940 

3,980

4,100

4,010

3,910 

5.890 

4.940

5,620

5,600

5,680

5,680

5,640

5,680

6,230

6,430 

6,490

6,310

6,490

6.590

6,510

5,510

5,030 

5,030

5,177

318,300

Apr.

5,060 

*5,070

4,990

4,940

5,140

5,180

5,110

5,030 

4.900 

5,110

5,260

5,600

5,700 

5,760 

5,680

5,720

6,560

6,860

7,000

7,060

7,030

6,900

6,960 

6,020

5,960

7,930

8,840

9.420

9,190

9, 280

6,309

375,400

May

*9,450 

9,450

9,510

8,190

7.830

8,190

9,540

14,800 

16,100 

16,400

16,600

17,400

17,800 

18,200 

19,100

20,100

20,000

19,700

19, 600

19,400

20,000

21,300

21.600 

*20, 700

19,300

18,100

17,400

17,500

*17,300

16,800 

15,900

16,230

998,200

June

15.200 

13,500

11,500

10,100

8,780

6,760

5,320

7,130 

7,570 

6,830

9,050

9,840

8,320

*5,410 

5,520

5,900

5,660

5,200

4,460

3,570

3,660

4,610

5,820 

6,310

5,700

5,110

4,690

4,020

*3,210

2.790

6,718

399,700

July

*3.160 

3^040

*2,680

3,220

2,200

1,640

1,280

1,050 

1,050 

828

594

652

1,260 

1,900 

2,170

1,490

688

718

*980

1,130

1,490

1,870

1,600 

1,160

804

718

710

732

1,200

1,360 

*1,680

1,453

89,360

Aug.

1,540 

1,320

1,270

1,420

1,780

1,720

1,410

1,420 

1,490 

1,300

1,380

1,720

1.960 

1,770 

1,650

1,610

*1 , 400

1,360

1,260

1,060

1,380

1,440

1,350 

1,100

1,010

,150

,120

,060

,090

290

*: ^540

1,399

86^020

Sept.

2,130 

2,320

2,010

1,570

1,260

788

469

828" 414 

1,070

780

772

924 

1,110 

1,380

1,550

1,460

1,370

1,260

1,690

2,080

2,410

2.490 

2,400

2,080

1,830

1,880

1,660

1,460

1,380

1,494

88,910

Calendar year 1956: Max 27,000 Mln 469 Mean 6,350 Ac-ft 4,610,000

water year 1956-57: Max 21,600 Mln 414 Mean 4,511 Ac-ft 3,266,000

* Discharge measurement made on this day.
PORTNEUF RIVER BASIN 47 

Portneuf River at Topaz, Idaho

Location. Lat 42°37 I , long 112°05' , In sec. 23, T. 9 S., R. 37 E., on right bank 200 ft 

upstream from Bob Smith Creek, 800 ft downstream from Topaz, l| miles upstream from 

diversion dam of Portneuf-Marsh Valley Canal Co., and 4 miles west of Lava Hot Springs.

Drainage area. 420 sq mi, approximately (includes that of Bob Smith Creek).

Records available. January 1913 to September 1915, July 1919 to September 1957. Monthly 

discharge only for some periods, published in WSP 1317.

Gage.--Water-stage recorder. Datum of gage is 4,918.00 ft above mean sea level, preliminary, unadjusted. Prior to July 20, 1919, staff gage at site three-eighths of a 

mile downstream at datum 3.0 ft lower. July 20, 1919, to June 22, 1954, staff gage 

at site a third of a mile downstream at datum 2.00 ft lower than present datum.

Average discharge.--40 years (1913-15, 1919-57), 196 cfs (141,900 acre-ft per year).

Extremes. Maximum discharge during year, 1,040 cfs Feb. 25 (gage height, 5.71 ft); minimum, 91 cfs Jan. 27.

1913-15, 1919-57: Maximum discharge, that of Feb. 25, 1957; minimum observed, 

65 cfs Oct. 9, 1934 (gage height, 0.81 ft, site and datum then in use).

Remarks. Records excellent. Flow regulated by Portneuf-Marsh Valley Reservoir (capacity, 

23,695 acre-ft, revised) and Chesterfield Reservoir on Twentyfourmile Creek (capacity, 

685 acre-ft). Diversions above station for irrigation of about 22,000 acres.

Revisions (water years). WSP 1347; 1920-22, 1924-25(M).

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

2.1 

2.3 

2.6

3.0

127

186

268

4.0 

5.0 

5.6

482

759

990

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

102

100

102

104

102

*102

102

104

104

106

110

119

121

108

106

106

106

108

106

104

104

106

110

116

114

127

ttf

135

135

136

3,485

112

6,910

Nov.

135

131

T36~ 129

138

136

138

138

138

136

136

135

*136

133

129

136

140

138

131

133

133

133

133

133

133

133

133 

135

133

133

4,034

134

8,000

Dec.

135

135

135

136

142

138

131

*129

129

135

146

156

216

204

168

158

148

142

140

138

138

135

136

136

135

131

131 

131

131

131

131

4,427

143

8,780

Calendar year 1956: Max 414

Jan.

129

129

127

129

125

125

125

127

127

127

127

125

129

138

T5T

125

125

121

125

133

*129

129

127

125

127

125

125 

127

121

121

127

3,932

127

7,800

Feb.

129

123

121

121

119

119

119

121

119

118

119

119

118

121

144

140

133

129

133

140

140

180

283

633

*922

956 8"23~ 

*509

-

6,951

248

13,790

Mar.

293 22"6

204

176

180

172

172

206

202

188

168

ISO

160

160

162

164

166

162

162

164

166

158

150

155

154

152

150 

152

154

160

164

5,377

173

10,670

Apr.

*162

156

156

156

158

188

174

166

162

162

164

168

168

168

168

168

168

166

164

162

168

170

192

194

TT5

172

168 

168

174

188

5,076

169

10,070

Mln 91 Mean 172

May

194

208

216

204

210

*216

224

230

234

236

239

253

304

394

377

346

314

302

407

522

480

*458

407

360

348

329

318 

316

314

310

312

9,582

309

19,010

June

310

312

323

314

304

297

285

272

260

262

247

239

236

230

228

226

*232

228

224

216

212

212

210

200

192

182

172 

T§6~ 164

243

7,222

241

14,320

July

234

230

220

208

184

144

138

175

192

194

198

210

220

222

198

196

210

210

210

214

222

222

220

218

218

216

*214 

214

216

218

218

6,404

207

12,700

Aug.

218

216

216

214

214

210

204

198

200

194

208

208

206

202

200

198

172

168" 144

170

164

162

202

208

206

206

208 

*216

196

200

202

6,130

198

12,160

Sept.

204

206

202

198

188

178

170

168

166

164

158

156

156

156

154

152

150

152

144

144

142

138

135

135

129

118

114 

112

112

110

4,611

154

9,150

Ac-l't 125,000

Water year 1956-57: Max 956 Mln 100 Mean 184 Ac-ft 133,400

* Discharge measurement made on this day.
48 PORTNEUF RIVER BASIN

Marsh Creek near McCammon, Idaho

Location. Lat 42°37 I 50", long 112°13'30", in NE£ sec. 22, T. 9 S., R. 36 E., near center 

of downstream side of abandoned highway bridge, 80 ft upstream from highway crossing 

and 2 miles southwest of McCammon.

Drainage area. 355 sq mi.

Records available. September 1954 to September 1957.

Gage.--Wire-weight gage read once or twice daily. Altitude of gage is 4,610 ft (by 

barometer).

Extremes. Maximum discharge observed during year. 282 cfs Feb. 25 (gage height, 5.53 ft); 

maximum gage height observed, 5.75 ft Feb. 16 (backwater from debris); minimum discharge observed, 40 cfs July 9-11; minimum gage height observed, 2.45 ft Jan. 29.

Remarks. Records good except those for periods of backwater from debris, which are fair. 

Diversions above station for irrigation. Part of Birch Creek (tributary to Marsh 

Creek) diverted into Devil Creek in Bear River basin.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

69

69

66

61

60

*61

63

64

65

66

67

68

76

68

69

69

68

67

65

63

63

64

65

67

67

74

78

74

74

75

76

2,101

67.8

4,170

Nov.

76

75

75

77

78

78

79

80

81

80

80

82

*83

83

83

83

83

83

80

76

71

65

53

5?

66

63

64

61

60

60

2,211

73.7

4,390

Dec.

61

59

62

64

68

73

60

*55

50

58

76

127

205

175

98

83

83

81

80

80

75

69

63

62

62

62

63

59

58

54

52

2,377

76.7

4,710

Calendar year 1956: Max 250

Jan.

51

53

50

50

51

51

52

53

53

54

54

54

74

~ss 120

59

51

49

50

54

*66

63

62

62

64

63

60

54

46

47

49

1,807

58.3

3,580

Feb.

61

62

60

58

53

52

53

56

57

60

63

84

94

105

179

256

154

88

86

105

120

140

199

264

*280

265

184

*138

-

3,376

121

6,700

Min 30

Mar.

128

118

112

111

109

112

112

114

118

106

106

87

84

84

90

90

88

84

84

83

83

76

74

71

71

72

74

74

70

7T

83

2,839

91.6

5,630

Apr.

 91

85

80

77

74

78

88

85

83

78

74

76

76

74

72

72

73

72

69

67

74

77

78

80

80

76

76

72

68

69

2,294

76.5

4,550

May

66

66

65

63

60

*56

56

55

57

60

66

111

136

184

183

160

145

138

202

218

192

*179

172

165

166

166

164

164

162

161

159

3,997

129

7,930

June

141

T34

117

106

99

73

69

66

58

66

67

71

71

68

69

*80

74

73

71

69

69

68

66

63

61

61

60

60

60

58

2,268

75.6

4,500

July

57

55

54

53

53

51

46

44

40

40

40

42

60

57

53

51

52

54

56

57

56

57

60

60

59

56

*56

54

54

55

52

1,634

52.7

3,240

Aug.

52

51

5050"

52

52

52

53

54

54

54

55

56

55

56

59

60

59

59

58

57

56

80

71

72

71

71

*74

77

66

66

1,852

59.7

3,670

Sept.

69

72

71

68

65

62

62

60

57

57

57

57

63

65

65

63

68

69

74

75

75

74

75

75

76.

75

74

75

76

75

2,049

68.3

4,060

Mean 65.3 Ac-ft 47,440

Water year 1956-57: Max 280 Min 40 Mean 78.9 Ac-ft 57,130

* Discharge measurement made on this day.

Note. Backwater from debris Feb. 5-20, May 1 to June 10, Aug. 1-27.
PORTNEUF RIVER BASIN 49

Portneuf River at Pocatello, Idaho

Location. Lat 42°51'40", long 112°27'25", In NE^NE^ sec . 34 , T. 6 S. , R. 34 E. , on 

right bank 30 ft upstream from Fremont Street Bridge at Pocatello and 2.5 miles 

upstream from Pocatello Creek.

Drainage area. 1,000 sq mi, approximately.

Records available. --May to September 1897, March 1898 to October 1899, August 1911 to 

September 1957.

Gage. Water-stage recorder. Altitude of gage Is 4,430 ft (from topographic map). May 18, 

1897, to Oct. 14, 1899, staff gage at site 0.6 mile upstream at different datum. 

Aug. 31, 1911, to May 13, 1927, and Oct. 13, 1927, to June 13, 1928, staff gages 

near Carson Street Bridge 0.8 mile downstream at different datum. May 14 to Oct. 12,

1927. water-stage recorder at site 1.1 miles downstream at different datum. June 14,

1928. to Sept. 28, 1950, water-stage recorder near Carson Street Bridge 0.8 mile 

downstream at same datum as former staff gages at this site.

Average discharge. --44 years (1912-16, 1917-57), 255 cfs (184,600 acre-ft per year).

Extremes . Maximum discharge during year, 970 cfs Feb 

mum, 9 cfs July 18 (gage height, 3.46 ft)

28 (gage height, 6.52 ft); mini1897-99, 1911-57: Maximum discharge, more than 2,000 cfs sometime during period 

May 13 to June 14, 1917; minimum, 5 cfs July 31, 1942, from rating curve extended 

below 40 cfs.

Remarks . Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. Flow regulated by Portneuf -Marsh Valley Reservoir formed 

by earth dam completed In 1912 and raised 7 ft in 1950 (capacity, 23,695 acre-ft; 

16,410 acre-ft prior to 1950) and Chesterfield Reservoir (capacity, 685 acre-ft). 

Diversions above station for irrigation of about 33,000 acres.

Rating tables, water year 1956-57, except periods of lee effect 

height, in feet, and discharge, In cubic feet per second) 

(Shifting-control method used July 24-27)

Oct. 1 to Feb. 21 Feb. 22 to Sept. 30

4.6 

5.0

5.5

51

78

155

256

426

3.6 

3.8 

4.0 

4.3

4.6

17

30

50

5.0 280

480

710

960

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

80

78

83

78

*7£

74

*77

84

84

84

88

91

89

96

98

101

105

101

99

101

94

91

94

99

103

116

135

148

197 

TTp J. / a

157

3,177

102

6,300

Nov.

169

162

T5o" 157

236

250

259

268

262

245

234

228

*234

234

228

228

250

274

262

231

245

245

248

234

220

234

223

228

228

228

6,924

231

13,730

Dec.

225

225

225

225

231

236

218

*b!70

b!40

25?

262

309

386

426

415

330

289

265

253

248

248

242

231

234

234

228

225

225

215

220

225

7,807

252

15,480

Jan.

228

225

225

225

228

b220

b220

b230

b220

b220

b220

b230

b250

b300

b'280

242

197

b210

b230

b260

*b250

b250

b240

b240

b240

b240

b210

b!90

170

VQO

200

7,070

228

14,020

Feb.

250

250

240

230

210

210

210

220

220

240

250

270

290

320

397

408

412

415

412

390

376

351

543

765

*855

895

940

955

-

11,524

412

22,860

Mar.

885

675

548

458

411

427

395

407

494

480

411

383

383

343

339

335

335

335

327

331

335

319

301

287

294

301

298

290

294

335

363

12,119

391

24,040

Apr.

363

*347

335

323

327

403

427

39T

371

367

375

379

363

308

308

315

301

298

301

301

298

312

355

391

3S7

335

308

298

294 

TIT 31O

10,176

339

20,180

May

347

383

415

415

387

391

*403

407

427

419

399

411

530

715

785

810

800

760

755

835

895

905

*925

920

910

 880

845

820

805

785

775

20,259

654

40,180

June

750

700

665

620

556

462

407

375

335

294

290

266

262

242

230

236

*245

236

224

209

200

203

185

172

146

127

114

104

97

86

9,038

301

17,930

July

93

93

76

68

110

134

95

51

47

31

24

24

32

29

26

29

1722-

29

38

35

30

43

44

43

44

*43

41

52

50

52

1,545

49.8

3,060

Aug.

54

55

47

40

41

41

41

43

48

50

47

50

51

55

61

75

68

70

68

66

68

79

93

84

70

75

86

*78

88

84

69

1,945

62.7

3,860

Sept.

62

84

84

88

84

78

79

76

75

73

72

70

69

79

84

93

91

91

95

106

104

104

101

102

101

99

101

102

102

101

2,650

88.3

5,260

Calendar year 1956: Max 640 Mln 18 Mean 214 Ac-ft 155,200

Water year 1956-57: Max 955 Min 17 Mean 258 Ac-ft 186,900

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note.--No gage-height record Jan. 29 to Feb. 14; discharge estimated on basis of weather records 

and records for station at Topaz, Marsh Creek near McCammon, and other nearby streams.
50 BANNOCK CREEK BASIN

Bannock Creek near Pocatello, Idaho

Location. Lat 42°41'40", long 112°35'40", in NE^SE^ sec. 28, T. 83., R. 33 E. , in Fort 

Hall Indian Reservation, on right bank 0.3 mile upstream from Rattlesnake Creek, 

9f miles north of Pauline, and 14 miles southwest of Pocatello.

Drainage area. 230 sq mi.

Records available. May 1955 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 4,710 ft (from topographic map).

Extremes. Maximum discharge during year, 675 cfs Feb. 25 (gage height, 7.00 ft), from 

rating curve extended above 400 cfs on basis of slope-area determination of peak flow; 

minimum, 4.8 cfs Aug. 4; minimum gage height, 2.00 ft July 28, 29.

1955-57: Maximum discharge, that of Feb. 25, 1957; minimum, that of Aug. 4, 1957; 

minimum gage height, 1.94 ft July 10, 1955.

Remarks.--Records good except those for period of no gage-height record and those for 

period of backwater from beaver dams, which are fair. Diversions for irrigation above 

station. Discharge measurements of Rattlesnake Creek made about once a month to 

supplement this record (see p. 251).

Rating table, water year 1956-57, except period of backwater from beaver

dams (gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Mar. 29 to Apr. 11)

1.9 

2.1 

2.3 

2.6 

3.0

4.0 

7.8

3.5 

4.0 

4.5 

5.0 

5.5

99

147

204

267

339

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

10

9.7

10

10

9.7

12

*13

12

12

12

12

13

13

12

12

12

12

13

12

12

12

13

14

15

15

18

20

20

18 

18

18

414.4

13.4

822

Nov.

17

16

18

18

18

20

20

18

18

18

18

18

*18

18

17

18

18

18

16

16

16

16

16

18

18

18

18

18

17 

17

528

17.6

1,050

Dec.

18

18

18

18

18

18

16

18

*16

18

35

24

25

33

23

20

19

18

18

18

17

16

16

16

15

15

14

T4

14

14

14

574

18.5

1,140

Jan.

14

14

14

14

13

13

14

14

14

13

15

15

16

34

21

a!6

alS

alS

a!6

a!6

*16

16

16

16

16

15

13

16

13

14

14

481

15.5

954

Feb.

13

14

14

14

14

14

14

16

20

23

22

41

113

199

263

299

211

135

104

111

103

141

*178

220

*262

84

78

*48

-

2,768

98.9

5,490

Mar.

41

38

36

33

35

36

35

36

34

33

30

31

29

27

27

27

27

26

26

26

26

26

26

25

25

26

25

1±

24

33

40

933

30.1

1,850

Apr.

36

*33

29

28

27

36

34

30

27

26

26

27

26

25

24

24

24

23

24

24

25

27

29

27

26

24

23

23

22

11

800

26.7

1,590

May

20

20

20

20

19

18

*18

18

14

13

11

14

29

31

32

30

27

26

29

38

48

38

35

*36

34

30

26

24

23

22

21

784

25.3

1,560

June

20

19

18

18

13

13

16

14

15

14

13

14

13

14

16

*14

14

13

13

12

12

12

11

10

11

14

14

13

14

427

14.2

847

July

14

T3

13

13

12

9.7

10

9.7

10

9.7

8.9

8.3

8.3

8.3

8.3

8.6

7.6

7.8

7.0

7.4

7.4

7.4

6.8

7.2

7.6

7.4

6.5

*5.4

|i|

s!4

266.4

8.59

528

Aug.

5.9

5.9

5.9

5.7

5.4

5.4

5.5

5.7

5.9

5.9

6.3

6.8

7.2

6.1

6.1

6.8

7.0

7.2

7.4

7.4

9.2

10

9.4

9.4

9.4

9.7

10

10

12

TT

236.6

7.63

469

Sept.

11

10

10

10

10

10

9.7

9.7

9.7

9.4

9.2

9.4

9.2

8.9

972

10

10

10

12

12

12

11

11

11

10

10

11

10

10 

11

306.4

10.2

608

Calendar year 1956: Max 250 Mln 5.5 Mean 2O.9 Ac-t't 15,210

Water year 1956-57: Max 299 Mln 5.2 Mean 23.3 Ac-ft 16,910

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range In stage, 

and records for nearby streams.

Note. Backwater from beaver dams Aug. 1 to Sept. 30.
SNAKE RIVER MAIN STEM 

American Falls Reservoir at American Falls, Idaho

51

Location. Lat 42°46', long 112 C 53', in sec. 30, T. 7 S., R. 31 E., near right end of dam 

at outlet gates of reservoir on Snake River at American Falls.

Drainage area. 13,580 sq mi, excluding nontributary area on Snake River plains. 

Records available.--March 1926 to September 1957.

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Bureau of 

Reclamation).

Extremes. Maximum contents during year. 1.719,000 acre-ft June 2 (elevation, 4,354.84 

ft); minimum, 291,800 acre-ft Sept. 30 (elevation, 4,317.89 ft).

1926-57; Maximum contents, 1,729,000 acre-ft June 26, 1951 (elevation, 4,355.02 

ft); minimum since full capacity was attained on July 13, 1927, 17,200 acre-ft Oct. 22, 

-1931 (elevation, 4,299.72 ft).

Remarks. Reservoir is formed by concrete gravity dam with earth dikes at each end; partlal storage began in 1926, full storage in 1927. Capacity. 1,700,000 acre-ft between 

elevations 4,295.66 (bottom of outlet gate) and 4,354.50 ft (top of spillway radial 

gates). Small amount of dead storage. Water is used for irrigation by canals diverting from Snake River at Minidoka and Milner Dams. Contents given herein are computed 

from mean daily elevations; all available for release.

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

Capacity table, (elevation, In feet, and usable conteats 

In thousands of acre-feet)

4,317.0

4,320.0

4,325.0

4,330.0

4,335.0

272

341

469

616

787

4,340.0

4,345.0

4,350.0

4,355.0

9S4 

1,209 

1,457 

1,728

Usable contents, In thousands of acre-feet, water year October 1956 to September 1957

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

M(*)

Oct.

621

SST

624

627

628

632

637

644 

641

641

642

643

643

654

663

665

667

669

668

676

686

696

700

700

708

715

728

743

756 

761

771

4,334.57

+148

Hov.

782 

79T 

801

816

829

839

847

853 

859

868

880

891

893

901

907

910

914

927

941

946

952

957

961

966

977

987

992

996

1,001 

1.005

4,340.51

+234

Dec.

1,011 

1,621 

1,031

1,036

1,041

1,045

1,056

,064 

,074

,083

,085

,092

,101

,108

,118

1,128

1,141

1,147

1,152

1,158

1,163

1,168

1,177

1,185

1,190

1,195

1,199

1,204

1,208 

1,216

1,224

4,345.32

+219

Jan.

1,227 

1,227 

1,228

1,228

1,231

1,238

1,245

1,246 

1,247

1,249

1,250

1,252

1,259

1,266

1,269

1,272

1,274

1,275

1,277

1,283

1,288

1,290

1,293

1,295

1,297

1,300

1,306

1.511

1,310

1,309 

1,307

4,347.04

+83

Feb.

1,505 

1,369 

1,314

1,322

1,327

1,351

1,556

1,341 

1,346

1,555

1,360

1,367

1,575

1,579

1,585

1,592

1,400

1,410

1,418

1,425

1,452

1,440

1,450

1,462

1,478

1,492

1,504

1.518

-

--____-

4,351.17

+211

Mar.

1.529

1,538 

1,550

1,565

1,571

1,574

1,576

1,577 

1,581

1,590

1,603

1,606

1,610

1,617

1,621

1,627

1,631

1,642

1,645

1,648

1,645

1,652

1,656

1,661

1,665

1,666

1,668

1,671

1.672

1 j 6T2 

1,671

4,355.98

+153

Apr.

1,671 

1,671 

1,668

1,668

1.665

1,669

1,681

1,685 

1,685

1,688

1,695

1,696

1,697

1,698

1,696

1,697

1,696

1,699

1,701

1,705

1,704

1,705

1,704

1,699

1,698

1,699

1,701

1,704

1,708

1.711

4,354.70

+40

May

1,715 

1.716 

1,715

1,712

1,710

1,704

1,700

1.696 

1^697

1,702

1.705

1,705

1,706

1,708

1,707

1,708

1,712

1,715

1,715

1,707

1,706

1,706

1,707

1,708

1,707

1,706

1,705

1,705

1,707

1,712 

1,716

4,554.79

+5

June

1.719 

11,719 

1,717

1,712

1,709

1,706

1,702

1,695 

1,687

1,682

1,675

1,672

1,670

1,670

1,666

1,660

1,660

1,658

1,655

1,648

1,640

1,632

1,623

1,614

1,606

1,598

1,590

1,581

1,569

1.556

4,351 . 88

-160

July

1.541

T75fs

1,509

1,497

1,485

1,466

1,450

1,434 

1,416

1,398

1,380

1,362

1,345

1,526

1,509

1,295

1,275

1,260

1,241

1,225

1,204

1,186

1,167

1,152

1,154

1,116

1,099

1,082

1,063

1,047 

}, r 030

4,341.06

-526

Aug.

1,012 

997 

981

965

948

951

917

905 

890

875

859

845

829

814

797

781

764

748

753

717

702

687

674

658

643

627

612

598

585

568

551

4,327.86

-479

Sept.

525- 538 

513

501

490

478

465

449 

437

425

415

401

590

576

565

555

345

554

526

520

516

512

509

307

305

305

300

297

296

295

4,317.94

-258

Calendar year 1956 .................... t +117

Water year 1956-57.................... t -330

t Elevation, In feet, at end of month.

* Change In contents, in thousands of acre-feet.
52 SNAKE RIVBR MAIN STEM

Snake River at Neeley, Idaho

Location. --Lat 42°46'20", long 112°52'45", in SW£ sec. 31, T. 7 S. , R. 31 E., on right 

bank 400 ft upstream from fish hatchery buildings and 0.9 mile downstream from American Palls Dam. Records computed to show flow at former site in sec. 11, T. 8 S., 

R. 30 E., half a mile north of Neeley and 2| miles downstream from present site, by 

adding inflow between sites.

Drainage area.--13 ,600 sq mi, approximately, excluding nontributary area on Snake River 

plains.

Records available.--March 1906 to September 1957. Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 4,241.6 ft above mean sea level (levels 

oy Bureau of Reclamation). Prior to Aug. 8, 1910, staff gages and Aug. 8, 1910, to 

June 6, 1930, water-stage recorder, at site 2^ miles downstream at different datura. 

June 7, 1930, to Mar. 19, 1945, water-stage recorder at site 0.4 mile upstream from 

present site and at datura 0.4 ft higher than present datura.

Average discharge.--31 years (1926-57), 6,804 cfs (4,926,000 acre-ft per year).

Extremes. --Maximum discharge durin^year, 25,100 cfs May 20 (gage height, 8.90 ft); minimura, 74 cfs Oct. 28 (gage height, 0.90 ft).

1906-57: Maximum daily discharge, 48,400 cfs June 20, 1918 (gage height, 13.5 ft, 

site and datura then in use); minimum, 50 cfs Oct. 22, 23, Nov. 14-16, 1941.

Remarks. Records excellent. Flow regulated by American Falls Reservoir (see preceding 

page) and other reservoirs, having a combined usable capacity of 4,600,000 acre-ft. 

About 740,000 acres of land irrigated by water diverted from river and tributaries 

upstream from station.

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

Rating table, water year 1956-57 (gage height, in feet, and discharge,

In cubic feet per second) 

(Shifting-control method used June 5 to Aug. 2)

0.9 

1.3 

1.7 

2.0 

2.3

117

179

270

420

2,6 

3.0 

3.5 

4.0 

5.0

600

900

1,390

2,160

5,050

6.0 

7.0 

8.0 

9.0

9,080

14,100

19,400

25,300

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

5,450 

4,030

3,390

3,390

3,370

3,370

117

4,610

5,820

3,970

3,900

5,730

80

79

*4,840

4,860

4,880

4,880

4,900

79

77

3,630

3,550

3,570

3,590

3,590

118

74

3,410

3,550

3,550

100,454

3,240

199,200

Nov.

3,500 

3,520

146

144

3,570

3,500

3,500

3,520

3,500

111

78

*5,500"

3,540

3,540

3,570

3,570

121

103

3,460

3,500

3,500

3,480

3,500

129

87

5,680

3,550

3,560

3,560

3,560

78,599

2,620

155,900

Dec.

*913 

127

3,280

3,320

*3,170

2,310

1,470

755

129

5.770

3,300

2,390

2,340

2,350

1,310

136

3,340

3,380

3,370

3,310

3,340

1,590

528

3,410

3,350

3,430

*3,450

3,350

1,730

670

3,430

72,748

2,347

144,300

Jan.

4,950 

4,950

4,950

4,330

1,760

726

4,120

4,090

4,120

4,110

4,150

1,850

820

4,230

4,240

4,230

4,220

4,210

1,930

900

3,600

3,610

3,590

3,570

3,590

*1,960

1,370

5,510

5,180

5.520

5,270

111,456

3,595

221,100

Feb.

5.120 

2,170

1.170

2,880

2,920

2,920

2,930

2,920

2,260

1,250

2,760

2,640

2,640

2,650

2,670

2,320

1,350

2,720

2,690

2,700

2,700

*2,770

2,450

1,500

2,730

2,680

2,420

2,470

-

69,400

2,479

137,700

Mar.

3,390 

3,040

1,050

3,310

5,210

6.O7O

6,070

5,960

136

124

4,410

4,430

4,430

4,430

4,400

4,780

3,390

6,120

6,400

6,430

6,590

6,590

6,620

6,620

6,940

8,080

8,080

8,130

8,130

*8,130

8.170

165,660

5,344

328,600

Apr.

8,170 

8,170

8,170

7,940

6,070

4.860

5,210

6,100

6,020

6,020

6,070

6,410

7,520

8,300

8,300

8,170

8,040

8,080

8,480

*8,900

8,900

9,320

9,650

9,650

9,650

9,650

9,650

9,690

9,790

9,790

240,740

8,025

477,500

May

9.890 

12,000

13,200

13,200

13,100

13,100

14,800

16,200

16,200

17,500

18,800

19,300

20,600

21,400

*21,300

21,400

21,400

22 , 500

24,300

25.100

24,100

23,500

23,500

23, 600

23, 600

23,000

21,000

18,400

*17,500

17,600

17,700

588,790

18,990

1,168,000

June

17,700 

17,700

17,200

14,3OO

11,300

11,300

12,4OO

12,800

12,800

12,800

11,900

11,500

11,200

*10,900

10,100

9,460

9,080

8.990

9,460

10,200

10,900

12,200

12,100

11,600

11,800

12,000

12,400

*12,600

12,600

12,500

-------

363,790

12,130

721,600

July

12,600 

12,400

12,700

*12,800

12,800

12,800

12,700

12,700

12,600

12,600

12,400

12,400

12,500

12.500

12,600

12.500

12,500

12.700

*13,100

13,200

15.500

13,200

13,100

13,100

12,700

12,600

12,600

12,800

12,900

12,800

12,700

594,700

12,750

782,900

Aug.

*12,500 

12,400

12,500

12,500

12,200

11,700

11,400

11,500

11.200

1 1 , 400

11,800

12,000

12,000

12,600

15.000

12,600

*12,300

12,100

11,800

11,800

1 1 , 700

11,600

1 1 , 500

11,400

11,500

11,600

11,700

11,700

11,700

11,700

*11,700

568,500

11,890

730,900

Sept.

11.600 

11,100

10,800

10,500

10,500

10,500

10,100

10,000

9,890

9,790

9,690

9,890

9,950

9,650

9,410

9,220

8,550

8,220

7,690

7,110

*6,790

6,640

6,600

6,480

6,180

6,050

5,990

5,920

5,880

5.500

255,550

8,518

506,800

Calendar year 1956: Max 28,100 

Water year 1956-57: Max 25,100

Mean 8,758 

Mean 7,7OO

Ac-ft 6,543,000 

Ac-ft 5,574,000

* Discharge measurement made on this day.
ROCK CREEK BASIN 53

Rock Creek near Rockland, Idaho

Location. Lat 42°31'40", long 112°51'40", NE^NW^- sec. 29, T. 10 S., R. 21 E., on right 

bank 10 ft upstream from culvert on private road, 3 miles south of Rockland, and 

3f miles upstream from East Fork.

Drainage area. 182 sq mi.

Records available. May 1955 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 4,720 ft (from topographic map).

Extremes. Maximum discharge during year, 244 cfs Feb. 2'3x(gage height, 6.1 ft, from 

floodmarks), from rating curve extended above 60 cfs on basis of slope-area determination of peak flow; no flow for long periods.

1955-57: Maximum discharge, that of Feb. 23, 1957; no flow for long periods each 

year.

Remarks. Records fair except those for periods of ice effect or no gage-height record 

and those above about 100 cfs, which are poor. Practically entire flow diverted 

for Irrigation above station during growing season. Discharge measurements of East 

Fork made about once a month to supplement this record (see p. 251).

Rating table, water year 1956-57, except periods of ice effect ( 

height, In feet, and discharge, In cubic feet per second)

1.0

1.1 

l.Z 

1.4 

1.6 

1.9 

Z.Z

.7 

Z.3

5.1

11

18

2.5

3.0 

3.5 

4.0 

5.0 

6.0

26

41

58

76

115

Z19

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

Z

3

4

5

6

7

8

9

10

11

1Z

13

14

15

16

17

18

19

ZO

Zl

zz

Z3

Z4

25

26

Z7

28

29

30

31

Total

Mean

Ac-ft

Oct.

1.0

1.0 1.1 1.1

.5

.1

TT *.i

.1

.1

.1

.z

.Z.1.1

.1

.z

.z

.2

.Z

.2

.Z

.3

.Z

.6

1.8

1.8

Z.O

Z.9

3.4

3 .8

Z4.0

0.77

48

Nov.

4.3

4.8

5.1

5.3

5.7

6.6

575

3.7

Z.I

2.3

Z.5

Z.5

*Z.5

2.4

Z.4

2.4

Z.4

2.5

Z.4

4.0

5.7

5.5

5.3

5.3

5.3

5.3

5.1

5.1

4.9

4.9

1Z3.8

4.13

246

Dec.

4.9

5.0

5.1

5.1

5.3

5.0

4.5

175

*5.Z

6.0

10

7

7

9

7

6

5.5

5.5

5.5

5

5

5

5

5

5

4.5

4.5

4.5

4.5

4.5

4.5

170.1

5.49

337

Jan.

.5

.5

.5

.5

.5

.5

10

6

5

4.5

4.5

5

5

*5

5

5

5

4.5

4

4.5

4

4.5

4.5

148.0

4.77

294

Feb.

5

4.5

4.5

4.5

4.5

4.5

4.5

5.5

7

8

8

47

89

126

116

115

107

59

45

58

38

*63

*91

98

57

*41

*36

19

1,Z65.5

45. Z

Z,510

Mar.

14

Tz

1Z

1Z

12

13

1Z

13

12

11

10

10

9.8

9.5

9.3

9.1

9.1

9.1

8.9

8.5

8.3

8.0

8.0

7.8

8.0

8.0

7.6

7.4

771

13

10

309.8

9.99

614

Apr.

10 *To

9.3

9.3

8.5

10

9.3

8.9

8.3

8.0

8.0

8.0

7.8

7.6

7.4

7.4

7.4

7.6

7.6

7.8

7.8

8.0

7.8

7.4

7.2

7.0

7.4

7.0

7.0

6.8

Z41.6

8.05

479

May

6.8

6.6

6.Z

6.2

6.0

6.0

*6.0

5.9

4.Z

.Z

.1

.4

l.Z

.9

.5

.3

4.Z

Z.5

5.5

*4.8

Z.8

Z.9

Z.4

3.1

Z.Z

2

1.8

1Z

9.3

7.2

6.0

1Z6.2

4.07

250

June

4.5

4.3

4.1

3.7

Z.3

.1

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

o

0

0

0

0

0

0

19.0

0.63

38

July

(*)

0

0

0

Aug.

0

0

0

0

0

0

0

o

o

0

0

0

0

0

o

0

0

0

o

0

~8.5 10

.Z

.1

.1

.1

.1

.1

*0

0 

0

19. Z

0.6Z

38

Sept.

0

0

0

0

0

0

0

0.1

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0.4

0.01

0.8

Calendar year 1956: Max 93 Min 0 Mean 5.93 Ac-ft 4,3OO

Water year 1956-57: Max 1Z6 Min 0 Mean 6.71 Ac-ft 4,850

, Dec. 6 to Feb. 11 (no gagether records and records for
54 RAFT RIVER BASIN

Raft River at Peterson Ranch, near Bridge, Idaho

Location. Lat 42°04', long 113°27' , in sec. 5, T. 16 S., R. 26 E., on left bank 100 ft 

upstream from One Mile Creek, 400 ft downstream from road bridge, 7j miles southwest 

of Bridge Post Office, and 16 miles south of Malta.

Drainage area.--412 sq mi.

Records available.--September 1946 to December 1953, May 1955 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 4,980 ft (by barometer).

Average discharge.--9 years (1946-53, 1955-57), 21.3 cfs (15,420 acre-ft per year).

Extremes. Maximum discharge during year, 77 cfs June 11 (gage height, 2.13 ft); minimum, 3.0 cfs Jan. 16 (gage height, 1.03 ft).

1946-53, 1955-57; Maximum discharge, 1,090 cfs Feb. 5, 1951 (gage height, 

4.52 ft), from rating curve extended above 200 cfs on basis of slope-area determination of peak flow; minimum, 1.2 cfs Jan. 13, 1950 (gage height, 0.90 ft), caused by 

ice Jam upstream.

Remarks. Records good. Diversions above station for irrigation.

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, in cubic feet per second)

1.1

1.2

1.3

1.4

3.6 

5.8

1.6 

1.8 

2.0 

2.2

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

7.4

7.4

7.0

*6.1

6.4

6.4

5.8

5.1

4.9

571

5.4

6.4

5.8

6.4

6.4

7.0

8.0

^77

6.7

7.0

7.0

7.7

7.0

7.4

7.7

7.4

7.7

7.4

7.0

6.7

6.7

207.1

6.68

411

Nov.

6.4

F7T

.0

.4

.4

.4

.0

.0

.0

.0

.0

* .0

.0

.0

.0

.4

.7

.4

.7

.7

7.0

8.3

8.3

8.6

8.9

8.6

8.9

8.6

8.6

8.6

225.6

7.52

447

Dec.

8.9

8.6

8.9

9.4

9.9

*8.9

8.3

S75

8.3

8.3

10

20

28Jg"j

19

19

15

13

15

13

12

10

11

11

12

10

11

10

10

10

11

380.8

12.3

755

Jan.

11

TT

10

10

8.6

8.9

8.9

10

8.9

8.9

9.4

9.4

9.9

10

10

8.6

8.3

8.6

8.9

*9.9

8.9

8.0

8.3

9.4

8.3

8.0

8.0

8.0

7.4

7.0

sTo

278.5

8.98

552

Feb.

8.3

8.3

8.0

7.4 FTO"

8.0

8.3

8.3

8.3

8". 6

8.9

9.9

10

11

27

^6" 41

38

32

36

32

28

33

36

28

25

*26

20

-

559.3

20.0

1,110

Mar.

17

14

14

14

14

13

13

14

22

20

18

16

13

12

12

13

13

12

11

10

10

9.9

9.4

9.4

9.9

9.4

8.9

B79

8.9

*12

14

395.7

12.8

785

Apr.

*14

23

22

21

18

18

20

21

19

18

18

18

17

16

16

15

15

16

16

17

19

20

20

18

17

16

16

16

14

13

527

17.6

1,050

May

13

12

12

13

*13

12

12

12

13

13

16

17

17

23

31

31

36

37

38

44

48

51

72

*71

64

53

47

47

47

52

58

1,025

33.1

2,030

June

55

50

51

54

54

53

46

41

34

47

67

4T

39

36

34

32

29

*26

24

23

28

26

23

21

18

16

14

13

14

JJL

1,024

34.1

2,030

July

12

TT

10

9.9

9.4

8.9

8.6

8.

8.

8.

8.

8.

8.

7.

7.

7 . 3

7 .

6.

7.

6.

6.

7.

7.

7.

*8.

8.3

6.7

5.8

5.8

5.8

5 ,6

246.5

7.95

489

Aug.

5.8

5.6 -576

5.6

5.6

5.6

5.8

5.8

5.6

5.6

5.6

5.8

5.8

5.6

5.8

6.4

6.7

5.8

5.6

6.1

6.1

11"7.7

6.4

6.1

6.4

 6.1

5.8

5.8

5.8

6.7

189.7

6.12

376

Sept.

6.7

6.1

6.1

5.8

6.1

5.6

5.6

5.6

6.1

6.4

5.6

5.6

5.4

5.1

571

5.4

5.4

5.8

6.1

5.8

7.0

8.6

876

8.3

6.7

6.1

6.1

6.1

6.1

*7.4

186.4

6.21

370

Calendar year 1956: Max 84 Min 4.9 Mean 14.1 Ac-ft 10,240

water year 1956-57; Max 72 Min 4.9 Mean 14.4 Ac-ft 10,400

* Discharge measurement made on this day.
RAPT RIVER BASIN 55

Clear Creek near Naf, Idaho

Location. Lat 41°58'15", long 113 0 17'15", in NE£SW£ sec. 1, T. 14 N., R. 13 W., Salt 

Lake meridian, on right bank 2 miles south of Utah-Idaho State line, 3 miles south of 

Naf, and 20 miles upstream from mouth.

Drainage area. 19 sq mi, approximately.

Records available. January 1910 to June 1911 (fragmentary), June to December 1912 (gage 

heights only), October 1944 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317.

Gage. Water-stage recorder and concrete control. Altitude of gage is 5,840 ft (by barometer). Prior to Dec. 31, 1912, staff gage at site 30 ft upstream at different datum. 

Nov. 23, 1944, to Mar. 28, 1950, water-stage recorder at site 600 ft upstream at different datum, above one small diversion.

Average discharge. 13 years (1944-57), 9.43 cfs (6,830 acre-ft per year).

Extremes. Maximum discharge during year, 126 cfs June 4 (gage height, 1.99 ft); minimum, 

U.3 cfs Nov. 2, Mar. 13; minimum gage height, 1.04 ft Mar. 13, Aug. 4.

1910-11, 1944-57: Maximum discharge observed, 180 cfs May 13, 1910; minimum, 

0.1 cfs several times during summers of 1952-54, 1956.

Remarks. Records good except those for periods of ice effect or no gage height record, 

which are fair. Three small diversions above station for irrigation.

Rating table, water year 1956-57, except period of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.1 0.8 1.5 23

1.2 2.6 1.6 36

1.3 7.2 1.8 71

1.4 14 2.0 114

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

1.0

TTU

1.0

 1.0

1.1

1.1 1.1

1.3

1.6

1.8

1.4

1.6

1.6

1.4

1.4

1.4

1.4

1.3

1.4

1.4

1.4

1.6

1.6

1.6

1.3

1.8

1.8

1.6

1.3

1.4

 1.4

43.1

1.39

85

Nov.

1.0

.8

.9

1.0

1.1

1.0

1.1

1.4

1.4

1.4

1.4

1.4

1.3

.9

1.0

1.2

1.4

1.1

1.1

bl.2

}»

35.3

1.18

70

Dec.

(")

> 1.2

37.2

1.2

74

Jan.

(")

> 1.1

34.1

1.1

68

Feb.

(*)

> 1.2

-

33.6

1.2

67

Calendar year 1956: Max 114 Mln 0.5

Mar.

-

(*)

> 1.2

1.1

1.1

1.4

1.6

1.4

1.4

1.4

1.6

1.4

1.0

1.1

1.3

1.6

1.4

1.4

1.6

1.8

'275" 2.9

43.2

1.39

86

Apr.

2.1

1.8

1.8

1.8

1.8

2.3

2.1

*1.8

1.6

T5

2.1

2.1

2.1

2.3

2.3

2.1

2.3

2.1

2.1

2.3

2.3

2.3

2.9

2.3

2.1

2.1

2.1

2.1

2.6

5-6

65.1

2.17

129

Mean 8.90

May

4.4

*6.0

6.0

5.4

5.2

4.0

7.2

12

17

19

20

16

18

*22

23

24

25

30

58

58

49

41

35

30

29

32

39

49

63

75

86

906.2

29.2

1,800

June

90

94

*105

103

112

105

96

79

88

88

*84

86

82

65

60

52

44

41

42

49

44

41

38

38

38

35

35

36

35

29_

1,934

64.5

3,840

July

24

2?

21

20

18

16

15

12

*10

13

14

12

9.0

7.2

6.6

6.6

8.4

9.6

9.0

8.4

7.8

7.8

7.2

7.2

6.6

6.0

2.6

376

4.9

4.9

4.4

324.8

10.5

644

Aug.

lil *4.0

4.0

1.7

?73

3.6

3.6

3.2

2.9

2.9

2.9

1.8

1.9

2.6

2.3

2.3

2.1

1.8

1.8

1.8

2.3

4.4

3.6

2.6

2.6

*2.3

2.3

2.6

2.6

2*6

4.0

85.8

2.77

170

Sept.

3.6

276

2.3

2.3

2.1

1.8

1.8

1.6

1.8

2.1

2.1

1.8

1.8

1.6

1.6

1.4

T74

1.8

2.3

2.3

2.1

2.1

1.8

1.8

1.6

1.4

1.4

1.4

1.4

1.4

56.5

1.88

112

Ac-ft 6,460

Water year 1956-57: Max 112 Mln - Mean 9.86 Ac-ft 7,140

Peak dlaeharge (base, 70 efs).--June 4 (8 p.m.) 126 efs (1.99 ft).

* Discharge measurement made on this day.

b Stage discharge relation affected by Ice.

Note. No gage-height record Nov. 27 to Mar. 12 (stage-discharge relation-affected by Ice during 

most of period); discharge estimated on basis of 4 discharge measurements, weather records, and 

engineers' notes.
56 RAFT RIVER BASIN

Cassia Creek near Elba, Idaho

Location.--Lat 42°17', long 113°31', in SE£ sec. 22, T. 13 S., R. 25 E., on left bank 

200 ft downstream from bridge on State Highway 77, 3 miles northeast of Elba, and 

7-f miles southwest of Malta.

Drainage area.--84 sq mi, approximately.

Records available.--November 1956 to September 1957.

Gage. Water-stage recorder.

Extremes. Maximum discharge during period, 233 cfs May 14 (gage height, 4.61 ft); minimum, 4.2 cfs Jan. 3,5; minimum gage height, 1.52 ft Sept. 7, 8.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Numerous diversions for irrigation above station.

Rating tables, Nov. 30, 1956, to Sept. 30, 1957, except period of ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used May 16-24)

Nov. 30 to May 24 May 25 to Sept. 30

1.7 

1.9 

2.2 

2.5

6.8

12

41

3.0 75

3.5 117

4.0 164

4.5 213

1.5 

1.7 

1.9 

2.1

5.4

10

18

30

2.4 48

2.7 70

3.0 94

3.8 167

Discharge, in cubic feet per second, November 1956 to September 1957

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

Total

Mean

Ac-ft

Oct. Nov.

*11

_

_

-

Dec.

10

9.2

10

10

10

8.2

872

10

9.8

12

47

26

20

17

14

15

12

12

12

11

9.5

8.5

12

11

10

9.2

9.5

9.8

9.8

10 

10

392.7

12.7

779

Jan.

9.5

9.8

7.8

8.7

7.8

7.5

8.2

9.2

8.7

9.8

10

11

10

al3

alO

a8.5

a7.5

a8

*9.5

10

9.0

8.0

8.5

9.0

10

9.0

7.0

T7o

7.5

8.0 

8.5

276.0

8.90

547

Feb.

9.0

9.5

9.5

8.0

8.5

9.0

9.5

11

10

10

11

12

12

29

26

18

17

16

16

16

15

22

32

25

29

27

*41

7T

-

485.0

17.3

962

Mar.

23

23

22

21

29

22

32

35" 40

31

25

25

22

19

22

21

20

19

19

19

19

15

IS

17

20

20

17

17

19

*27 

28

704

22.7

1,400

Apr.

27

*26

26

22

25

57

14

40

36

36

37

35

34

35-

34

33

32

34

38

37

37

34

*35

32

30

29

28

29

33

36

1,011

33.7

2,010

May

38

41

44

41

39

41

*44

46

53

53

66

70

122

204

165

143

137

127

157

148

144

195

173

161

 152

144

139

143

140

129 

125

3,424

110

6,790

June

129

131

128

128

135

152

145

132

122

140

111

103

96

88

84

77

69

*60

55

55

53

50

48

46

45

45

50

53

52

54

2,636

87.9

5,230

July

51

47

44

41

39

35

34

33

31

28

30

29

26

23

22

21

20

21

21

19

18

19

16

*15

14

12.

12

11

14

15

12

773

24.9

1,530

Aug.

11

To

9.8

9.5

9.5

9.0

9.2

9.2

8.5

8.5

8.5

8.5

7.8

7.5

7.1

6.9

6.9

6.7

6.4

7.1

9.0

9.5

8.2

7.8

7.5

7.8

*7.1

6.9

7.1

7.1

7.8

253.4

8.17

503

Sept.

7.8

7.1

7.1

7.1

6.9

6.7

6.2

&7z

6.2

6.4

-4

i.4

.4

.4

.4

.4

5 . 4

i.7

.1

.3

.3

.3

.3

.3

.1

.3

.1

.1

*e'.j

205.0

6.83

407

Calendar year : Max Min Mean Ac-ft

Water year : Max Mln Mean Ac-ft

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Salmon 

Falls Creek and other nearby streams.

Note. Stage-discharge relation affected by ice Jan. 17 to Feb. 7.
SNAKE RIVER MAIN STEM 

Lake tfalcott near Minidoka, Idaho

57

Location. Lat 42°40', long 113°29', in sec. 1, T. 9 S., R. 25 E., on south wall in powerhouse at Minidoka Dam on Snake River, 6 miles southeast of Minidoka.

Drainage area. 15,700 sq mi, approximately, excluding nontributary area on Snake River 

plains.

Records available.--April 1909 to September 1957.

Gage. Staff gage and glass tubes connected to lake through pipes; gage read at 8 a.m. and 

T' p.m. Datum of gage is 4,200 ft above datum of Bureau of Reclamation, which is 

49.52 ft below mean sea level. Prior to Feb. 1, 1941, hook gages at approximately same 

site at same datum.

Extremes.--Maximum contents during year, 102,170 acre-ft Mar. 31 (gage height, 45.58 ft); 

 minimum, 61,060 acre-ft Mar. 11 (gage height, 41.98 ft).

1909-57: Maximum contents, 110,740 acre-ft Aug. 8, 1922 (gage height, 46.28 ft); 

minimum, -101,410 acre-ft Nov. 17, 1941 (gage height, 15.19 ft).

Remarks.--Reservoir is formed by rock-fill dam with concrete core; storage began in 1906. 

CTipacity, 107,240 acre-ft between gage heights 36.00 (sill of powerhouse penstock) and 

46.00 ft (top of flashboards). Dead storage below gage height 36.00 ft, about 

115,000 acre-ft. Water used for power development and irrigation on Minidoka project 

of Bureau of Reclamation. Contents given herein are above gage height 36.0 ft. 

Figures of daily contents computed from mean of twice daily readings.

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

Capacity table (elevation, In feet, and usable 

contents, In acre-feet)

,241.9 

,242.2 

,242.6 

,243.0 

,243.5

60,200

63,480

67,870

72,260

77,900

,244.0 

,244.5 

,245.0 

,245.5 

,246.0

83,540

89,360

95,180

101,210

107,240

Usable contents, In acre-feet, water year October 1956 to September 1957

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

/ t j

(*)

Oct.

94,840 

94,490

93,090

91,110

88,430

87,500

84,470

78,130

81,960

82,860

81,510 

84,240

84,590

79,260

74,180

76,550

79,260

81,400

83,090

85,870

80,160

76,550

77,680

76,320

80,270

82,410

83,540

78,690

74,740

76,320

77 ,790

43.49

-16,700

Nov.

79,480 

81,060

81,850

77,230

73,390

75,420

77,560

79,260

80,830

81,400

76,320 

72,940

72,490

75,200

77,680

78,580

79,480

75,420

71,830

73,500

75,980

77,790

79,030

79,710

75,200

71,720

73,390

75,420

77,230

79,030

43.60

+1,240

Dec.

79.590 

76,440

73,050

74,180

75,650

76,320

75,420

73,170

69,520

65,670

68,200 

70,070

69,960

69,410

68,640

65,670

62,490

63,700

65,450

66,990

67,760

68,750

67,210

63,700

65,670

67,210

68,750

70,290

70,730

69,190

65,670

42.40

-13,360

Jan.

67,210 

69,630

72,260

73,730

71,390

67,650

65.150

64,800

66,330

68,200

69,850 

70,730

68,310

65,890

67,100

68,970

70,950

72,720

72,380

70,620

66,990

68,970

70,730

71,720

72,720

72,490

71,830

69,850

72,720

74,740

43.25

+9,410

Feb.

75.840 

72,940

72,050

69,520

70,290

71,170

72,050

72,260

72,260

71,720

69.190 

69,850

70,620

71,170

72,600

72,940

72,490

70,620

71,280

71,830

71,830

72,490

72,720

72,940

71,170

71,830

71,940

71,390

-

_ .

42.92

-3,690

Mar.

70,950 

71,060

69,190

66,660

66,220

71,390

74,970

76,550

74,740

66,550

61,060

63)480

65,230

66,330

66,220

67,320

66,110

69,850

73,390

74,520

79,710

83,890

87,270

89,940

95,670

100,370

100,490

102,050

101,450

102,170

45.58

+30,780

Apr.

101,330

99,520

100,130

100,490

98,920

96,030

94,950

96,390

94,950

94,020

93,790 

95.520

93,790

96,870

98,920

98,800

98,320

97,110

97,470

97,590

97,590

97,350

95,180

95,790

96,630

96,150

96,390

96,510

96,510

95,180

45.00

-6,990

May

94,720 

94,250

95,900

94, 720

94,950

94,490

94,020

95,510

96,390

96,870

97,350 

97,840

97,960

98,320

97,590

97,590

97,840

97,470

97,840

96,510

99,040

97,250

97,590

97,840

98,320

98,200

98,080

97,470

96,390

96,630

96,630

45.12

+1,450

June

96,270 

96,150

95,670

95,550

94,840

92.040

gg 390

92J970

93,320

95,090

93,790 

94,490

93,900

95,790

96,390

96,750

97,230

97,550

96,270

94,250

92,270

92,740

94,490

95,790

94,020

95,670

94,250

95,670

96,390

96,870

45.14

+240

July

96,870 

96,630

94,370

95,430

96,390

95,670

97,350

97,960

98,320

99,280

98 , 800 

98,560

98,320

97,110

95,910

95,430

95,790

94,490

95,180

95,670

95,670

96,150

96,270

97,350

97,590

96,870

95,910

95,790

95,910

95,670

95,430

45.02

-1,440

Aug.

94,720 

95,430

95,910

96,870

96,630

96,630

96,030

95,430

95,310

93,550

92,040 

92,510

93,320

94,020

96,390

98,200

98,080

98,560

98,320

98,080

97,840

97,230

97,840

96,750

96,030

95,910

95 , 180

95,430

95,430

94,720

95,430

45.02

0

Sept.

96,870 

98,320

97,470

96,990

96,270

95,910

95,790

93,550

93,090

92,390

91 , 920 

91,920

93,090

94,720

95,910

97,110

98,080

95,310

96,870

96,870

96,870

97,470

97,350

97,110

97,230

96,270

95,070

93,670

92,160

92,160

44.74

-3,270

Calendar year 1956.................... * -5,280

Water year 1956-57.................... * -2,330

t Gage height, In feet, at end of month. 

* Change In contents, In acre-feet.

503667 O - M -5
58 DIVERSIONS PROM LAKE WALCOTT

North Side Minidoka Canal near Minidoka, Idaho

Location. Lat 42°40', long 113°29', in sec. 1, T. 9 S. , R. 25 E., on left bank 600 ft 

downstream from headgates at Minidoka Dam and 6 miles south of Minidoka.

Records available. April 1908 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 4,180.33 ft above mean sea level (Bureau 

of Reclamation bench mark). April to November 1910 at datum 0.08 ft higher.

Average discharge.--16 years (1941-57), 613 cfs (443,800 acre-ft per year).

Extremes.--Maximum discharge during year, 1,800 cfs July 7 (gage height. 10.24 ft)- no 

TTow~Oct. 20 to Apr. 14.

1908-57: Maximum discharge, 1,810 cfs July 9, 1953 (gage height, 10.19 ft); no 

flow during most winters.

Remarks. Records excellent. Plow controlled by headgates. Canal diverts water from 

Snake River for irrigation of 64,000 acres under North Side Minidoka project. Diversion began in June 1907.

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

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

586

612

652

710

722

720

712 

*666 

590

542

542

546

548

532 

521

527

534

538

399

0

0

0

0

0

0

0

0

0

0

0

0

11,199

361

22,210

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

-

0

0

0

Calendar year 1956: Max 1,780 Mln 0

Mar.

0

0

0

Apr.

0

15

0

0

0

0

0 

0 

0

0

0

0

0

0 

66

153

*391

498

428

392

392

392

403

506

546

578

596

596

734

981

7,652

255

15,180

May

1,220

1,300

1,390

1,530

1,580

1,630

1,650 

1,660 

1,660

1,660

1,660

1,420

896

988 

1,040

1,040

1,040

*1,040

903

795

744

712

684

184

684

684 "831

912

1,050

1,130

1,270

35,487

1,145

70,390

June

1,430

1,470

* 1 , 500

1,550

1,670

1,690

1,700 

1,710 

1,710

1,650

1,500

1,330

1,130

986 

953

864

*816

937

1,200

1,300

1,290

1,290

,300

,490

,610

,640

* ,690

,720

.750

, 730

42,586

1,420

84,470

July

1,730

1,750

1,760

1,760

*1,770

1,770

1,780 

1,766 

1,780

1,780

1,780

1,770

1,740

1,690 

1,660

1,670

1,740

*1,770

1,750

1,730

1,690

1,680

1,680

*1,690

1,690

1,680

1,680

1,670

1,670

*1,640

1,560

53,290

1,719

105,700

Aug.

1,420

1,350

1,350

1,360

1,370

1,350

1,380 

1,440 

1,460

1,450

1,500

1,540

1,580

1,600 

* 1,590

1,560

1,520

1,530

1,520

1,520

1,520

1,490

1,390

1,320

1,300

1,290

1,350

1,350

1,330

1,310

V.240

44,280

1,428

87,830

Sept.

1,230

1,230

1,230

1,230

1,220

1,220

 1.250 

1,230 

1,230

1,160

1,130

1,110

981

884 

891

896

859

760

692

692

690

652

752

786

822

910

949

*940

935

937

29,558

985

58,630

Mean 633 Ac-ft 459,600

water year 1956-57: Max 1,780 Mln 0 Mean 614 Ac-ft 444,400

* Discharge measurement made on this day.
DIVERSIONS PROM LAKE WALCOTT 

South Side Minidoka Canal near Minidoka, Idaho

59

Location. Lat 42 040', long 113"29', in sec. 12, T. 9 S., R. 25 E., on right bank 900 ft 

downstream from headgates at Minidoka Dam and 6 miles south of Minidoka.

Records available. April 1908 to September 1957. Monthly discharge only for some periods, 

published in WSP 1317.

Gage.--Water-stage recorder. Datum of gage is 4,184 ft above mean sea level (Bureau of 

Reclamation bench mark). Prior to 1910 at site 600 ft upstream at same datum.

Average discharge. 16 years (1941-57), 482 cfs (349,000 acre-ft per year).

Extremes Maximum discharge during year, 1,360 cfs July 12; no flow Oct. 21 to Apr. 10. 

1908-57: Maximum discharge, 1,410 cfs July 12, 1953, July 19, 1955; maximum gage 

height, 6.10 ft, July 24, 1954, July 19, 1955 (backwater from aquatic growth); no flow 

for long periods during nonirrigation seasons.

Remarks.--Records good. Flow controlled by headgates. Canal diverts water from Snake 

River for irrigation of 54,000 acres under South Side Minidoka project. Diversion 

began in April 1908.

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

Revisions (water years).--WSP 1347: 1910.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

485 

450

496

596

634

660

663

637

650

612

525

437

545

297

282

282

515

341

356

122

3.

0

0

0

0

0

0

0

0

0

0

9,185

296

18,220

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

SL 

0

0

0

0

0

0

0

0

0

0

50

147

201

311

282

263

288

280

241

246

259

254

244

239

261

275

276

372

485

4,974

166

9,870

May

602 

760

848

880

925

1,090

1,250

.510

, 500

,250

,240

,220

1,130

1,000

842

758

694

697

604

508

416

360

319

501

297

297

356

437

503

586

755

23,535

759

46 , 680

June

986 

1,190

1,270

1,290

1,270

1,260

1,290

1,300

1,500

1,500

1,280

1,220

1,140

1,050

977

931

872

940

1,030

1,150

1,180

1,200

1,210

1,230

1,260

1,290

1,310

1,520

1,310

1,310

35,651

1,188

70,710

July

1,310 

1,500

1,290

1,510

1,510

1,320

1,330

1,340

1,050

1,320

,340

,340

,290

,250

,500

,290

,290

,510

,500

,500

,500

,290

,290

,290

,270

,250

,240

,290

.540

1,310

1,270

40,030

1,291

79,400

Aug.

1,270

1,270

1,260

1,240

1,200

,200

,190

,160

,150

,,160

,160

,160

,210

,230

,250

,270

,260

,250

,240

,240

,240

,210

,170

,150

,140

,150

,200

,240

,240

,240

200

57,550

1,211

74,480

Sept.

1,120 

1.090

1,100

1.140

1,140

1,120

1,080

1,050

1,050

1,020

964

925

916

885

816

718

755

718

647

592

569

579

652

653

658

653

673

731

720

681

25,593

846

50,370

Calendar year 1956 : Max 1,340 Min 0 Mean 523 Ac-ft 379,520

Water year 1956-57: Max 1,340 Min 0 Mean 485 Ac-ft 349,750
60 SNAKE RIVER MAIN STEM

Snake River near Minidoka, Idaho

Location.--Lat 42°40' , long 113"30' , in sec. 2, T. 9 S., R. 25 E., on right bank 1 mile 

downstream from Minidoka Dam and 6 miles south of Minidoka.

Drainage area. 15,700 sq mi, approximately, excluding nontributary area on Snake River 

plains.

Records available.--August 1895 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317. Prior to January 1902, published as "at Montgomery 

Ferry," as "at Montgomery Ferry near Minidoka" in 1902, and as "below Minidoka Dam, 

at Howell's Ferry" in 1911.

Gage.--Water-stage recorder. Datum of gage is 4,132.2 ft above mean sea level (riverprofile survey). Prior to Apr. 21, 1910, staff gage at site 6 miles downstream at 

different datum. Apr. 21, 1910, to Aug. 28, 1911, staff gage at present site and 

dabum.

Average discharge.--31 years (1926-57), 5,772 cfs (4,179,000 acre-ft per year).

Extremes.--Maximum discharge during year, 24,900 cfs May 21 (gage height, 11.96 ft); 

minimum, 1,260 cfs Nov. 13 (gage height, 3.77 ft)..

1895-1957: Maximum discharge, 47,500 cfs May 29,*-30, 1897 (gage height. 12.6 ft, 

former site and datum); minimum, 58 cfs Dec. 2, 1951 (gage height, 1.93 ft).

Remarks. Records good. Flow regulated by American Falls Reservoir (see p. 51), Lake 

Walcott (see p. 57), and other reservoirs, having a combined usable capacity of about 

4,700,000 acre-ft; many diversions above station for irrigation.

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

Revisions (water years). WSP 1347: 1911.

Rating table, water year 1956-57 (gage height, in feet,

and discharge, in cubic feet per second)

(Shifting-control method used Oct. 1-6,

June 11 to Sept. 3O)

4.9 

5.4 

6.0 

7.0

2,640

3,570

4,880

7,480

8.0

10.0

12.0

10,5OO 

17,100 

24,800

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

5,570 

3,410

3,140 

3,140

3,090

2,920

2,860

2,930

*2,970

2,950

2,970

2,980

2,980

2,940

2,920

2,920

2,920

2,970

3,020

2,940

2,950

2,880

2,970

2,960

2,950

2,930

2,960

3,000

2,940

3,010

3,000

93,090

3,003

184,600

Nov.

2,810 

2,780

2,820 

2,860

2,900

2,860

2,880

2,810

2,880

2,820

2,680

2,710

2.960

2,770

2,820

2,660

2,730

2,680

2,690

2,710

2,670

2,700

2,640

*2,650

2.640

2,640

2,830

2,830

2,830

2,780

83,040

2,768

164,700

Dec.

2,790 

2, HO

2,760 

*2,780

2,770

2,800

2, 170

2,760

2,760

2.710

2,880

2,900

2,770

2,810

2,780

2,890

2,760

2,760

2,760

2,760

2,880

2,810

2,830

*2,820

2,800

2,820

2,830

2,860

2,870

2 , 830

5,040

87,130

2,811

172,800

Jan.

5,800 

5,950

4,060 

4,490

*4,650

5,900

5,620

3,620

3,690

3,550

5,590

5,560

3,220

3,400

5,520

5,410

5,480

5,400

5,420

3,160

5,200

5.060

3,090

3,180

5,180

5,180

5,140

*3,340

4,490

4,670

5,070

112,930

5,645

224,000

Feb.

4,980 

5,030

2,930 

2,700

2,750

2,830

2,860

2,980

*5,050

2,940

2.690

2,720

2,750

2,840

2,860

2,890

2,850

2,760

2,740

2,770

2,840

2,900

*5,020

5,080

2,860

2,860

5,190

5,020

-

82,650

2,952

165,900

Mar.

5,260 

3,410

3,460 

3,340

3,510

4,130

5,020

5,950

*4,930

4,090

3,940

4,050

4,000

3,940

4,310

4,790

4,810

4,790

4,830

4,860

5,240

5,000

4,980

5,020

5,120

5,480

7,260

7,980

7,930

8,210

8,350

155,990

5,032

509,400

Apr.

8,870 

*8,610

8,150 

8.O40

7,540

6,290

5,240

5,920

6,670

6,620

6,590

6,290

6,700

6,210

7,480

8,100

7,510

7,480

7,680

8,260

7,980

8,440

9,200

9,450

9,110

8,760

8,640

8,460

8,610

*8 ,490

251,190

7,706

458,600

May

8,520 

9,290

10,300 

10,500

10,300

10,500

11,100

12,400

12 , 700

15,800

15,800

16,600

18,000

19,800

19,800

19,400

19,500

20,700

22,700

25,700

24,500

22,700

22,500

22,400

22,700

22, ZOO

*20,400

17,700

16,000

15,800

15,700

527,210

17,010

tl,046

June

15,500

14^600 

12,500

9,700

8,640

9,200

9,290

9,510

9,570

9,080

8,700

8,670

8,260

7,950

7,820

*7,400

7,290

7,650

8,700

8,410

9,360

8,840

9,020

8,810

9,020

9,080

*9,140

9,290

9,450

285,650

9,521

566,500

July

9,450 

9,420

10.200 

9,610

*9,520

9,450

9,360

9,560

9,110

5,700

9,64O

9,420

9,480

9,770

10,100

9,950

9,930

*9,700

9,640

9,770

10,000

9,960

9,610

*9,730

9,610

9,510

9,610

9,570

9,540

*9,510

9,510

298,520

9,630

592,100

Aug.

9,670 

9,510

9,230 

9,110

*9,260

9,250

9,170

8,610

8 , 900

9,730

9,230

9,140

8,840

8,750

*8,990

9,250

9,110

8,990

*9,020

8,990

8,840

8,780

8,810

9,250

9,140

*9,140

9,080

9,140

9,170

8,990

8,700

281,710

9,087

558,800

Sept.

8,460 

8,580

8,760 

8,550

8,100

7,840

*7,960

8,460

8,180

7,930

7,760

7,540

7,210

6,910

6,910

6,970

6,890

7,100

6.8OO

*6,180

5,580

5,070

5,290

5,140

5,050

5,050

5,120

*5,170

5,140

4j090

205,590

6,786

403,800

Calendar year 1956: Max 27,000 Min 2,570 Mean 7,669 Ac-ft 5,567,000

Water year 1956-57: Max 24,500 Min 2,640 Mean 6,692 Ac-ft 4,845,000

* Discharge measurement made on this day. 

t Expressed in thousands.
GOOSE CREEK BASIN 61

Goose Creek above Trapper Creek, near Oakley, Idaho

Location. Lat 42°07'10", long 113°56'20", In sec. 13, T. 15 S., R. 21 E., on right bank 

a quarter of a mile upstream from maximum flowline of Oakley Reservoir, 5 miles 

upstream from Trapper Creek, 6 miles upstream from Oakley Dam, and 9 miles southwest of 

Oakley.

Drainage area. 600 sq mi, approximately.

Records available. April 1911 to September 1916, March 1919 to September 1957. Monthly 

discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 4,770 ft (by barometer). Prior to 

Aug. 29, 1912, at site 200 ft downstream at different datum.

Average discharge.--43 years (1911-16, 1919-57), 45.4 cfs (32,870 acre-ft per year).

Extremes. Maximum discharge during year, 319 ofs May 23 (gage height, 3.95 ft); minimum 

determined, 3.7 cfs Nov. 15 (gage height, 1.33 ft), result of freezeup.

1911-16, 1919-57: Maximum discharge, 1,670 cfs Jan. 23 or Feb. 24, 1943 (gage 

height, 7.6 ft, from floodmark), from rating curve extended above 600 cfs by logarithmic plotting; no flow July 22 to Aug. 10, Aug. 22-30, 1934, Aug. 15 to Oct. 3, 

1935, July 22 to Sept. 25, 1940, Sept. 14, 1947.

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

Decreed water rights are reported to apply to about 2,700 acres above station. Diversions for irrigation are made as flow permits to a major part of this acreage. Plow 

of artesian well, completed in 1935, enters below station. Practically entire flow 

passing station is stored in Oakley Reservoir (see p. 63).

Rating table, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.3

1.4

1.5 

1.7 

2.0

2.3

2.6 

3.0 

3.5 

4.0

63

93

147

230

330

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

8.6

8.3

*7.9

ST5

8.6

8.6

9.3

8.6

9.3

11

12

16

16

16

15

14

14

13

13

13

14

14

14

14

14

16

20

23

23 

20

20

422.5

13.6

838

Nov.

20

19

18

18

19

20

21

21

21

21

*22

22

21

18

16

17

22

20

18

13_

17

19

21

20

21

21

20

20

21

22

589

19.6

1,170

Dec.

21

21

21

21

21

*20

17

12

1S~~ 9.3

25

45

60

BT

46

40

37

35

32

29

26

22

23

24

25

24

22

23

24

23 

22

834.3

26.9

1,650

Jan.

22

21

19

19

18

17

16

18

17

18

21

22

23

23

22

18

15

14 *TT

21

19

15

16

17

18

16

15

15

16 

15

16

559

18.0

1,110

Feb.

18

20

17

16

T6

18

20

21

22

22

23

25

27

30

80

100

100

85

85

100

95

90

110

145

160

115

*113

109

-

1,782

63.6

3,530

Mar.

85

71

69

65

67

64

65

76

88

75

68

64

58

50

50

52

50

49

48

47

48

46

16" 40

47

48

48

45

47 

55

62

1,791

57.8

3,550

Apr.

66

62

*57

53

52

57

67

68

65

63

66

70

74

77

80

82

83

86

98

105

105

94

89

88

85

85

82

77

75 

72

2,283

76.1

4,530

May

74

79

85

*106

129

129

119

126

152

164

178

195

226

254

287

200

308

295

293

291

298

304

SC2" 312

*281

261

239

225

207 

195

190

6,604

213

13,100

June

170

T5T

147

142

142

144

119

103

85

85

83

81

77

70

63

62

61

*58

50

50

52

55

48

42

38

37

29

24

21

iS.

2,310

77.0

4,580

July

17

16

15

14

13

13

12

11

11

9.6

7.4

7.1

T74

11

12

12

10

9.6

9.0

9.0

8.6

11

15

*16

14

1918"

18

18

17

398.7

12.9

791

Aug.

16

14

13

12

11

10

10

9.3

9.0

8.6

7.9

7.6

7.1

6.6

6.8

6.8

7.1

6.8

6.4

5.8

S41TT

9.6

8.3

6.4

*6.1

6.1

5.8

5.6

5.6

7 .6

254.4

8.21

505

Sept.

7.9

8.3

7.4

6.8

6.1

5.6

5.1

4.9

4.7

4.5

4.7

5.1

5.1

5.1

5.4

5.1

5.4

5.8

6.8

8.6

T6" 10

10

10

9.6

9.3

9.0

8.3

7.9

*8 .6

211.1

7.04

419

Calendar year 1956 : Max 303 Min 2.3 Mean 45.1 Ac-ft 32,780

Water year 1956-57: Max 312 Min 4.5 Mean 49.4 Ac-ft 35,770

* Discharge measurement made on this day. 

Note . Stage-discharge relation affected by ice Nov. 14-16; 

Dec. 25 to Feb. 24.

19, 20, Nov. 23 to Dec. 8, Dec. 11-22,
62 GOOSE CREEK BASIN

Trapper Creek near Oakley, Idaho

Location. Lat 42°10', long 113°59', in sec. 34, T. 14 S., R. 21 E., on left bank 4 miles 

upstream from Oakley Dam and 7 miles southwest of Oakley.

Drainage area. 32 sq mi, approximately.

Records available.--May 1911 to September 1916, March 1919 to September 1957. Monthly 

discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder and concrete control. Altitude of gage is 4,820 ft (by

Darometer). Prior to Sept. 1, 1912, water-stage recorder at approximately present site 

at different datum. Sept. 1-30, 1912, staff gage at site three-quarters of a mile downstream at different datum. Apr. 8, 1913, to Sept. 30, 1916, and Mar. 28, 1919, to 

Aug. 15, 1931, water-stage recorder at site 1 mile upstream from present site at 

different datum.

Average discharge.--43 years (1911-16, 1919-57), 14.8 cfs (10,710 acre-ft per year).

Extremes. Maximum discharge during year, 72 cfs Dec-. 11 (gage height, 5.45 ft); minimum, 

3.3 cfs Dec. 7 (gage height, 4.64 ft).

1911-16, 1919-57: Maximum discharge recorded, 270 cfs Aug. 17, 1941 (gage height, 

6.99 ft), from rating curve extended above 100 cfs on basis of velocity-area studies 

and peak flow over weir (a higher flow may have occurred Aug. 15, 1931); minimum 

recorded, 2.3 cfs Feb. 22, 1949, result of freezeup.

Remarks. Records excellent. 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. Water-stage recorder inspected occasionally by employees of Oakley Canal Co. 

Revisions (water years).--WSP 1063: 1941, 1943.

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

4.8 

8.3

14

5.0

5.1 

5.3

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

9.3

973

9.3

*9.3

9.3

9.3

9.3

9.9

10

10

11

11

11

10

9.9

9.3

9.3

9.3

9.3

9.3

9.3

9.9

10

10

11

13

14

1?

11 

10

11

315.6

10.2

626

Nov.

11

IT

11

11

11

11

11

11

11

11

*10

10

11

10

10

11

1111

ID" 9.3

11

11

11

11

11

11

11

1011

11

322.3

10.7

639

Dec.

11

10

10

10

*11

9.3

7.1

6.9

ETS

12

26

?4

16

15

12

12

11

11

11

11

11

8.4

12

10

10

9.9

10

10

11

11

11

358.9

11.6

712

Calendar year 1956: Max 30

Jan.

11

11

9.9

11

7.7

8.1

11

1210"

9.3

11

11

11

11

11

8.7

7.0

8.8

*11

12

12

9.2

8.8

9.6

10

8.3

6.6

STJ

8.0

7.6

9 9

302.8

9.77

601

Feb.

14

13

12

11

TT

11

12

11

1111

11

11

11

15

15

13

12

12

12

13

14

19

29

18

20

18

22

*15

397

14.2

787

Mln 6 . 2

Mar.

14

14

14

14

14

13

15

16

TS

14

12

T2

12

12

14

13

13

12

12

12

12

12

12

12

13

14

12

12

13

14

14

407

13.1

807

Apr.

14

T4

*14

14

14

16

16

15

15

16

17

17

17

18

18

18

18

19

20

18

19

18

18

18

18

18

18

18

18

19

510

17.0

1,010

Mean 13.9

May

20

2T

23

*24

23

23

24

26

28

30

32

32

36

40

38

38

38

40

48

44

42

44

43

42

*40

38

38

36

36

34

32

1,053

34.0

2,090

June

30" 32

28

28

27

25

24

24

24

24

23

22

21

21

21

20

20

*19

18

18

18

17

16

16

16

16

15

TS

15

15

628

20.9

1,250

July

16

T4

13

13

13

12

12

12

12

12

12

11

11

11

11

11

10

11

11

11

10

10

*10

10

10

10

9.9

S79" 9.3

9.9

347.3

11.2

689

Aug.

9.3

9.3

8.8

STs

8.8

8.8

8.8

8.8

8.8

8.8

8.8

9.3

9.3

9.3

9.9

9.9

9.9

9.3

9.3

9.3

9.9

~9.3 11

9.3

9.3

*9.3

9.3

9.3

9.9

9.9

10

289.8

9.35

575

Sept.

.~9".9 10

9.9

9.3

9.3

9.3

9.3

9.3

9.9

9.9

9.9

9.9

9.9

9.9

9.9

9.3

9.3

9.9

10

10

9.9

9.9

9.3

8.8 9T3~

8.8

8.8

8.8

9.3

*9 .3

286.3

9.54

568

Ac-ft 10,110

Water year 1956-57: Max 48 Mln 6.6 Mean 14.3 Ac-ft 10,350

Discharge measurement made on this day.
GOOSE CREEK BASIN 63

Oakley Reservoir near Oakley, Idaho

Location.--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 and 4 miles southwest of Oakley.

Drainage area. 670 sq mi, approximately.

Records available.--October 1912 to September 1957.

Gage. Staff gage below 54.5 ft and wire-wright gage above, read about once a week. 

TQtitude of gage is 4,630 ft (by barometer). Staff gage only prior to Apr. 15, 1954.

Extremes. Maximum contents observed during year, 31.400 acre-ft June 5 (gage height, 

89.1 ft); minimum observed, 1,590 acre-ft Oct. 3 (gage height, 20.98 ft).

1912-57: Maximum contents observed, 74,600 acre-ft June 15, 1921 (gage height, 

136.2 ft); reservoir drained at close of seasons In 1915, 1919-20, 1926, 1933, 1949-50.

Remarks. Reservoir is formed by earth dam constructed in 1911-13; storage began in 1911. 

Capacity, 74,350 acre-ft between gage heights 0.0 (bottom of diversion tunnel) and 

136.0 ft (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.

Cooperation. Gage readings and capacity table furnished by Oakley Canal Co.

Capacity table, water year 1956-57 (gage height, in feet, 

and usable contents, in acre-feet)

20.0

25.0

30.0

40.0

50.0

1,430

2,320

3,450

6,320

9,900

60.0

70.0

80.0

90.0

14,100

19,300

25,200

32,100

Usable contents, in acre-feet, water year October 1956 to September 1957

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

M(*)

Oct.

-

1,590

-

.

-

-

-

-

_

-

.

-

2,180

_

-

-

-

-

_

_

_

-

-

.

-

_

-

a3, n J4.0

_

+1,710

Nov.

3,200

-

-

.

-

-

-

-

3,880

_

.

-

4,110

.

.

-

_

-

_

_

_

_

-

_

_

_

a4,960

.

+1,820

Dec.

5,020

-

5,260

_

-

-

-

-

_

_

_

-

6,000

.

_

-

_

-

_

_

_

_

-

_

_

_

-

a7.189

.

+2,220

Jan.

7,250

-

-

.

_

7,600

-

-

.

_

_

-

7,920

.

_

_

8,130

-

.

_

_

_

-

_

_

,

-

a8 . 650

_

+1,470

Feb.

8,700

-

-

.

.

-

-

-

.

_

_

-

9,490

_

.

.

_

-

_

_

-

12,200

12,600

-_____-

56.68

+3,950

Mar.

12,900

-

13,500

.

_

_

14,100

-

_

_

.

_

15,000

_

_

_

.

-

_

_

_

.

-

.

16,100

-

alS.500

_

+3,900

Apr.

16,700

17,000

-

_

_

_

.

-

_

_

_

_

18,300

_

_

_

_

-

_

_

_

20,000

_

_

_

a20.800

_

+4,300

May

20, 900

21,100

.

.

-

_

-

.

21,100

_

21,900

22,900

.

_

_

_

25,600

.

26 , 900

_

28,400

_

29,300

-

aSO.600

_

+9,800

June

-

31,200

31,400

_

-

_

-

30,900

_

_

_

.

30,300

_

30,100

29,900

_

-

_

_

_

29,500

28,800

_

-

a29,000

_

-1,600

July

29,000

-

-

_

-

26,100

-

-

_

.

21,800

-

_

.

_

_

-

_

17,800

16,800

-

.

.

_

15,200

a!4.700

_

-14,300

Aug.

14,400

-

13,300

.

-

-

-

-

11,900

_

_

-

12,000

_

_

_

_

-

10,300

_

_

-

9,660

_

8,700

a8,750

_

-5,950

Sept.

8,780

-

-

6,680

-

6,740

-

-

_

_

_

4,760

-

_

.

-

-

-

_

_

_

_

-

_

.

_

1,670

21.45

-7,080

Calendar year 1956.................... * +700

Water year 1956-57.................... * +240

t Elevation, in feet, at end of month.

* Change in contents, In acre-feet.

a No gage-height record; contents interpolated or estimated on basis of Inflow.
64 DIVERSIONS FROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MILNER

Minidoka North Side Pump Canal near Burley, Idaho

Location. Lat 42°32', long 113°57', in SW£sw£ sec. 24, T. 10 S., R. 21 E., at head of 

canal, 3 miles east of Milner Dam and 7 miles west of Burley.

Records available^ October 1956 to September 1957. 

Gage. Rated pumps.

Extremes. Maximum discharge during year, 244 cfs July 10-25; no flow Oct. 1, 1956, to 

May 3, 1957.

Remarks.--Records excellent. Flow controlled by pumping plant which lifts water from 

Snake River for irrigation of 13,600 acres of land in Minidoka North Side project.

Cooperation. Record of pump operation and seven discharge measurements furnished by 

Bureau of Reclamation.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

-

0

0

0

Calendar year 1956 : Max - Min -

Mar.

0

0

0

Apr.

0

0

0

May

0

ff

0

*23

20

30

34

48

62

62

62

53

58

58

58

58

58

53

53

43

43

38

38

34

34

34

34

48

53 

53

58

1,300

41.9

2,580

June

72

76

105

110

*137

148

152

162

162

173

173

173

173

173

178

178

178

178

*184

185

195

199

199

199

204

218

221

*22"8~ 228

228

5,189

173

10,290

July

233

*236

236

198

256

241

238

242

242

244

244

244

244

244

244

244

*244

*244

244

244

244

*244

244

244

244

240

240

240

240

235

221

7,422

239

14,720

Aug.

202

*207

202

198

198

193

193

193

193

181

181

183

183

183

183

183

183

183

183

*178

*170

167

167

167

167

167

167

167

167

165 

167

5,621

181

11,150

Sept.

167

167

167

162

159

159

159

159

159

142

142

142

119

119

119

119

110

110

97

97

90

90

90

*90

90

72

71

7T

71 

71

3,580

119

7,100

Mean - Ac-ft -

Waber year 1956-57 : Max 244 Min 0 Mean 63.3 Ac-ft 45,840

Discharge measurement made on this day.
DIVERSIONS PROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MILNER 65

P. A. lateral near Milner, Idaho

Location. Lat 42°32', long 114°01', in sec. 22, T. 10 S., R. 21 E., on left bank 600 ft 

downstream from pumping station and 2| miles northeast of Milner.

Records available. October 1915 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317.

Gage. Staff gage read twice daily. Altitude of gage is'4,196 ft (river survey). 

Average discharge.--9 years (1948-57), 26.1 cfs (18,900 acre-ft per year).

Extremes. Maximum discharge during year, 74 cfs Aug. 6-9; maximum gage height, 1.46 ft 

July 17, 20, 21; no flow for many days.

1915-57: Maximum discharge, 75 cfs several days during 1953 and 1956; no flow for 

many days.

Remarks. Records excellent. Plow regulated by pumping plant which lifts water 65.3 ft 

from Snake River for irrigation on North Side Twin Palls tract.

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

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

1.0

1.2 

1.5

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

-

0

0

0

Mar.

0

0

0

Apr.

0

0

0

May

30

14

IS

26

27

40

41

57

*57

57

57

57

57

57

57

58

58

58

58

58

58

58

56

56

56

56

54

43

59

55

58

1,552

50.1

3,080

June

58

65

65

65

*65

65

65

65

65

65

65

65

65

61

61

54

54

54

*54

54

54

54

61

59

61

61

61

61

65

JO

1,837

61.2

3,640

July

70

70

70

70

70

6770-

70

70

70

70

70

70

70

70

70

*70

70

70

72.

72

72

72

72

72

72

72

72

72

72

72

2,191

70.7

4,350

Aug.

72

*72

72

72

72

74

74

74

72

72

72

72

72

72

72

72

70

70

70

72

*71

70

70

70

70

65

65

65

65

63

63

2,177

70.2

4,320

Sept.

56

55

59

59

59

56

55

55

55

55

55

53

53

52

52

47

43

43

43

43

42

39

39

*39

29

27

27

27

0

O

1,317

43.9

2,610

Calendar year 1956 : Max 75 Min O Mean 27.7 Ac-ft 20,120

Water year 1956-57 : Max 74 Mln 0 Mean 24.9 Ac-ft 18, OOO

Discharge measurement made on this day.
66 DIVERSIONS PROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MILNER

Milner low-lift canal near Milner, Idaho

Location.--Lat 42°31', long 114°01' in sec. 32, T. 10 S., R. 21 E., at head of canal 

1 mile south of Milner.

Records available. October 1919 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317. Prior to October 1922, published as Murtaugh Canal 

near Milner.

Gage. Rated pumps. Prior to May 1, 1945, water-stage recorder at site 600 ft downstream. 

Average discharge. 13 years (1944-57), 76.8 cfs (55,600 acre-ft per year).

Extremes.--1919-57: Maximum daily discharge, 256 cfs July 25-31, 1954; no flow for many 

days.

Remarks.--Records excellent. Flow controlled by pumping plant which lifts water from 

Snake River above Milner Dam for irrigation of 12,170 acres of land in Milner low-lift 

irrigation district. Pumps rated by current-meter measurements.

Cooperation. Record of pump operation furnished by Milner low-lift irrigation district.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

TotaJ

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

28

11

77

2.6

153

May

78

79

93

*139

139

139

160

187

208

212

238

23?f

238

238

238

238

238

211

211

211

187

187

*137

137

137

137

137

137

179

187

204

5,499

177

10,910

June

212

212

212

212

*205

232

232

232

232

232

204

204

204

198

180

180

180

180

*180

197

206

206

206

206

206

*206

224

231

231

|57

6,279

209

12,450

July

*214

241

241

241

241

241

0

7

32

218

241

240

239

237

236

234

*333

233

233

233

233

233

233

350

254

254

854

254

254

254

254

6,782

219

13,450

Aug.

254

*IBT

254

245

245

245

245

245

245

245

245

245

239

239

239

*239

339

239

239

239

*239

239

239

239

239

239

236

236

236

236

236

7,493

242

14,860

Sept.

236

208

208

208

308

208

208

208

208

208

183

*158

158

158

152

131

131

131

131

131

131

131

131

131

131

*131

131

131

131

131

4,882

163

9,680

Calendar year 1956: Max 236 Mln O Mean 88.7 Ac-l't 64,420

Water year 1956-57: Max 254 Mln 0 Mean 85.0 Ac-ft 61,500

Discharge measurement made on this day.
DIVERSIONS PROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MILNER 67

Gooding Canal at Milner, Idaho

Location . Headgates of canal, lat 42°31' 

at Milner dam.

long 114 0 01' in sec. 28, T. 10 S., R. 21 E.,

Records available. October 1929 to September 1957. 

periods, published in WSP 1317.

Monthly discharge only for some

Gage.--Water-stage recorder on Milner-Gooding Canal at site 3 miles downstream from headgates . Staff gage on A lateral lj miles downstream from headgates and differential 

recorder on control gates of diversion 3 miles downstream from headgates.

Average discharge. 22 years (1935-57), total 990" cfs (716,700 acre-ft per year); MilnerGooding project, 568 cfs; North Side Canal Co. project, 422 cfs.

Extremes. Maximum daily discharge during year, 2,660 cfs July 7; no flow for many days. 

1530-57; Maximum daily discharge, 2,740 cfs Aug. 2, 1953; no flow for 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 is computed by combining the discharge of Milner-Gooding 

diversion and that of North Side Canal Co. diversions below their diversion point and 

adding 35 cfs to that sum for loss between headgates and division point.

Cooperation. page-height record furnished by North Side Canal Co. and American Falls 

Reservoir District No. 2.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

(t)

(*)

Oct.

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

380

550

600

730 

710

3,970

95.8

5,890

0

5,890

Nov.

640 

660 

730

720

770

780

750

740

710

720

750

770

760

800

840

860

830

740

780

630

*490

515

510

510

510

510

510

510

510

510

20,050

668

39,770

0

39,770

Dec.

510 

510 

510

320

0

0

0

0

0

0

0

0

0

0

O

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

1,750

56.5

3,470

0

3,470

Jan.

0

0

0

0

0

Feb.

0

0

0

0

0

Mar.

0

0

0

0

0

Apr.

0 

0 

0

0

0

0

0

0

0

0

0

O

0

0

0

0

0

0

0

0

0

430

630

560

620

850

990

1,160

*1,330

1,600

8,170

372

16,210

10,950

5,360

May

1.740 

1,810 

1,960

2,050

2,090

2,090

2,160

2,260

2,360

2,390

2,400

2,400

2,390

2,390

2,340

2,300

2,300

2,340

2,220

2,150

2,190

2,000

*1,980

2,050

*2,080

2,080

2,090

2,160

2,190

2,210 

2,220

67,390

2,174

133,700

73,650

60,020

June

2.220 

2,260 

2,290

*2,340

2,380

3,340

2,370

2,430

2,500

2,570

2,550

2,560

2,570

3.590

2,520

2,520

2,530

*2,480

2,440

2,440

2,460

2,480

2,510

2,470

2,500

*2,490

2,480

3,490

2,510

2,540

73,830

2,461

146,400

87,650

58,790

July

2,530 

*2,540 

2,550

2,640

2,640

2,620

2.660

2,6SO

*2,640

2,620

2,650

2,640

2,610

2,590

2,630

*2,640

2,590

2,600

2,580

2,570

2,610

2,590

*2,580

2,530

2,540

2,510

2,510

2,520

*2,530

2,530 

2 , 500

80,140

2,585

159,000

98,960

60,000

Aug.

2,520 

2.540 

2,540

2,520

2,520

2,490

*2,520

2,480

2,430

2,450

2,440

2,450

2,400

2,370

2,360

*2,390

2,370

2,380

2,350

*2,330

2,330

2,320

2,330

2,360

2,390

2,380

2,380

2,370

2,370

2,370 

2,370

74,820

2,414

148,400

91,060

57,340

Sept.

2,370 

*2,320 

2,290

2,310

2,310

2,240

2,220

2,200

2,250

2,280

2,280

2,250

2,260

2,260

2,260

*2,260

2,230

2,140

2,200

2,250

2,190

2,120

2,080

2,080

2,050

2,030

2,010

*2,000

1,990

lj_400

65,130

2,171

129,200

74,780

54,410

Calendar year 1956: Max 2,620 Min 0 Mean 1,095 Ac-ft 795,000

Water year 1956-57: Max 2,660 Min 0 Mean 1,080 Ac-ft 782,000

* Discharge measurement made on this day.

t To Milner-Gooding project, in acre-feet; total for water year, 437,000 acre-ft.

t To North Side Canal Co. project, in acre-feet; total for water year, 345,000 acre-ft.
68 DIVERSIONS PROM SNAKE RIVER BETWEEN GOOSE CREEK AND SHAKE RIVER AT MILNER

North Side Twin Palls Canal at Milner, Idaho

Location. Lat 42°32', long 114°01', in see. 20, T. 10 S. ( R. 21 E., on right bank half

 a mile north of Milner and three-quarters of a mile downstream from headgates at 

Milner Dam.

Records available . May 1909 to September 1957. Monthly discharge only for some periods, 

published in WSP 1317.

Gage . Water-stage recorder. Datum of gage is 4,123.4 ft above mean sea level, datum of

 1929. Prior to Apr. 1, 1916, staff gages at two sites within half a mile of present 

site at slightly different datum.

Average discharge. 22 years (1935-57), 1,257 cfs (910,000 acre-ft per year).

Extremes . Maximum discharge during year, 2,920 cfs July 10; maximum gage height, 8.68 ft 

Aug. 2; no flow for several days.

1909-57: Maximum daily discharge, 3,200 cfs for several days in 1921, 1928-29; no 

flow at times when headgates were closed.

Remarks. Records excellent except those for period of ice effect, which are good. Plow

 controlled by headgates. 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. Diversions began in April 1908.

Cooperation. Gage-height record and one discharge measurement furnished by North Side 

canal Co.

Revisions (water years) .--WSP 1347: 1912, 1917.

Rating table, water year 1956-57, except period of ice effect 

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Oct. 1-13, 

June 9 to Sept. 30)

1.0 

1.5 

2.0 

3.0

20

41

80

165

282

580

4.0 

5.0 

6.0 

7.0 

8.4

927

1,320

1,760

2,210

2,890

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

.700 

,690

,670

,600

,570

,530

,480

,400

,270

,310

,320

,080

216

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

17,836

575

35,380

Nov.

0

0

0

Dec.

0

0

0

302

*520

496

469

466

469

442

430

430

442

436

451

436

436

430

430

427

427

430

445

415

406

406

406

406

*406

391

382

12,032

388

23,870

Jan.

371 

374

368

365

371

339

342

354

327

313

313

313

307

302

313

319

313

296

319

333

322

324

307

304

313

b318

b325

b320

b337

*b337

b337

10,196

329

20,220

Feb.

b335 

b330

b324

b324

b324

b324

b324

324

327

330

327

322

319

313

316

319

319

319

319

319

319

322

327

327

333

*333

330

336

-

9,085

324

18,020

Calendar year 1956: Max 2,860 Mln 0

Mar.

336 

342

342

348

342

354

359

374

JeS

336

310

313

327

333

336

336

339

336

336

327

327

348

307

293

290

194

148

214

*255

87

0

9,254

299

18,360

Apr.

0

0

0

0

0

0

0

0

470

1,020

1,190

1,180

1,190

1,190

1,190

1,230

1,210

1,200

1,200

1,250

1,230

1,210

1,180

1,240

1,250

1,220

1,210

1,200

1,390

1,710

26,350

878

52,260

May

1.710 

1,850

2,020

*2,170

2,240

2,260

2,250

2,390

2.460

2,450

2,250

2,120

2,120

2,120

*2,110

2,120

2,190

2,230

2,020

2,040

2,100

2,020

*1,960

1,960

1,950

1,950

2,070

2,130

2,150

2,150

2,290

65,850

2,124

130,600

June

2,470 

2,560

2,550

2,620

*2,650

2,620

2,640

2,720

2,700

2,510

2,380

*2,330

2,290

2,270

2.250

2,260

2,260

2,260

2,410

2,600

2,660

2,650

2,650

2,640

2,640

*2,630

2,650

2,650

2,650

2.J760

75,930

2,531

150,600

July

*2,800 

2,810

2,800

2,850

2,860

2,860

2,890

*2,890

2,880

2,880

2,880

2,860

2,840

2,830

2,860

2,870

2,840

2,860

2,860

2,840

2,850

*2,860

2,860

2,860

2,850

2,840

Z,860

2,860

*2,860

2,870

2,880

88,510

2,855

175,600

Aug.

2,840 

2.880

2,800

2,750

2,740

*2,720

2,740

2,730

2,730

2,760

2,760

2,740

2,740

2,740

2,730

*2,760

2,760

2,760

2,760

2,780

2,760

2,770

2,760

2,760

2,780

2,780

2,780

2,780

2,780

2,800

2,710

85,680

2,764

169,900

Sept.

2,680 

»2.690

2,690

2,540

2,470

2,400

2,390

2,380

2,400

2,400

2,380

2,390

2,410

2,240

2,180

2,190

*2,100

1,890

1,730

1,680

1,660

1,510

1,420

1,420

1,420

1,410

1,410

1,290

1,250

1,250

60,270

2,009

119,500

Mean 1,301 Ac-ft 944,800

Water year 1956-57: Max 2,890 Mln 0 Mean 1,263 Ac-ft 914,300

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
DIVERSIONS PROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MILNER 69

South Side Twin Palls Canal at Milner, Idaho

Location.--Lat 42°31', long 114°01', in sec. 29, T. 10 S., R. 21 E., on left bank 50 ft 

upstream from highway bridge and 700 ft downstream from headgates at Milner Dam.

Records available.--May 1909 to September 1957. Monthly discharge only for some periods, 

published in WSP 1317.

Gage.--Water-stage recorder. Datum of gage is 4,121.5 ft above mean sea level, datum of 

T929. Prior to May 13, 1913, staff gage and May 13, 1913, to Apr. 24, 1914, waterstage recorder, at highway bridge 50 ft downstream at present datum.

Average discharge.--31 years (1926-57), 1,755 cfs (1,271,000 acre-ft per year).

Extremes.--Maximum discharge during year, 3,790 cfs July 9 (gage height, 10.66 ft); no 

flow Oct. 14-17.

1909-57: Maximum daily discharge, 4,600 cfs Aug. 12, 1918, including about 

1,200 cfs wasted through spillway below station and returned to river; maximum discharge for irrigation use, 3,810 cfs July 21, 1952, July 24, 1953, and July 27, 1955; 

no flow Sept. 20, 1920, Oct. 14-17, 1956.

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

Flow controlled by headgates. Diversions began in March 1905 when 30,000 acres were 

reported as irrigated. By 1912 this had increased to 147,000 acres and during recent 

years the irrigated area has been reported as 202,000 acres.

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

Revisions (water years). WSP 1347: 1910-16.

Rating table, water year 1956-57, except periods of ice effect 

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 1-13, June 10 to Aug. 28)

.9 

1.2 

1.5 

1.7 

2.0

2.5 

3.0 

4.0 

6.0 

8.0 

10.5

216

338

604

1,290

2,240

3,760

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

1,660 

1,650

1,590

1,550

1,550

1,530

1,490

1,550

1,450

1,380

. 699

130

12

0

7J

0

0

795

1,160

1,060

831

800

800

772

710

610

568

590 

478

441 

454

26,310

849

52,190

Nov.

441 

431

431

431

444

441

420

441

524

568

565

565

556

529

529

513

497

486

486

*508

491

491

491

497

497

497

497

494 

494

499

14,757

492

29,270

Dec.

499 

497

494

491

*491

494

494

494

494

494

494

431

407

410

410

412

410

412

405

399

405

394 3*57

397

397

399

397

397 

*399

399

399

13,512

436

26,800

Jan.

405 

412

431

428

446

444

428

b410

b400

b410

b412

415

407

399

407

407

b40"2~ 399

405

410

410

b400

b410

b410

b410

b410

b410

b405 

b405

*b413

b415

12,775

412

25,340

Feb.

b420 

b425

b420

b420

b420

b420

b420

b430

b440

b440

b440

b440

b440

b440

b440

b440

b442

446

44T

441

438

438

446

446

446

*446

438

428

12,186

435

24,170

Mar.

425 

428

433

431

444

399

366

373

384

368

333

328

303

300

300

300

300

300

300

300

338

313

300

300

249

174

152

154 

76

37 

37

9,245

298

18,340

Apr.

37 

37

68

439

758

843

853

*849

698

582

*532

526

570

643

716

978

1,540

1,660

1,340

1,100

1,070

1,170

1,380

1,410

1,460

1,540

1,620

1,800 

2,020

2 j 5 80

30,619

1,021

60,730

May

2,640 

2,880

2,930

*2,930

2,980

3,140

3,220

3,460

5,560

3,520

3,410

3,260

3,260

3,300

*3,330

3,350

3,350

3,350

3,230

3,070

3,020

3,010

2,890

2,820

2,810

2,870

2,980

3,090 

3,130

3,130

*3,130

97,050

3,131

192,500

June

3,380 

3,530

3,470

3,460

3,470

3,500

3,520

3,460

3,420

3,360

3,270

3,190

3,130

3,130

3,000

2,940

2,870

2^870

*2,990

3,110

3,220

3,250

3,270

3,270

3,330

*3,460

3,500

3,520 

3,540

3,590

99,020

3,301

196 , 400

July

*3,620 

5,650

3,660

3,660

3,660

3,640

3,650

*3,660

3,680

3,6(90

3,660

3,710

3,710

3,670

3,630

*3,630

3,630

3,630

3,690

3,710

5.720

*3,680

5,670

5,670

3,670

3,670

5,670

3,670 

*3,670

3,650

3,640

113,620

5,665

225,400

Aug.

3,650 

2,620

3,600

5,570

5,560

*5,560

5,550

3,510

5,520

5,480

5,460

5,520

5,550

5,550

5,540

*5,550

3,550

3,550

3,550

*3,530

3,520

3,540

5,540

5,540

5,540

3,540

3,540

3,530 

3,520

5,470

5 if 42*0

109,650

5,537

217,500

Sept.

3,400 

*!,370

3,340

3,350

3,290

3,250

3,250

3,250

3,250

3,190

3,040

*2,910

2,850

2,760

2,750

2,760

2,770

2,720

2,600

2,330

2,050

1,980

1,940

1,900

1,870

*1,870

1,860

1,850 

1,636

1,830

79,390

2,646

157,500

Calendar year 1956: Max 3,750 Mln 0 Mean 1,755 Ac-ft 1,274,000

Water year 1956-57: Max 3,720 Mln 0 Mean 1,694 Ac-ft 1,226,000

* Discharge measurement made on thia day. 

b Stage-discharge relation affected by ice.
70 SHAKE RIVER MAIN STEM

Snake River at Milner, Idaho

Location. Lat 42°32' , long 114°01', in sec. 29, T. 10 S., R. 21 E. , on left bank 200 ft 

downstream from highway bridge at Milner and a third of a mile downstream from Milner 

Dam.

Drainage area.--17,180 sq mi, approximately, excluding nontributary area on Snake River 

plains.

Records available. May 1909 to September 1957. Monthly discharge only for some periods, 

published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 4,062.9 ft above mean sea level, datum of 

1929. Prior to May 28, 1919, staff gages at slightly different sites and datums.

Average discharge.--31 years (1926-57), 2,107 cfs (1,525,000 acre-ft per year).

Extremes. Maximum discharge during year, 18,600 cfs May 21 (gage height, 18.60 ft); min- 

 liunFT 38 cfs July 14 (gage height, 2.15 ft).

1909-57: Maximum discharge, 40,000 cfs June 21, 1918 (gage height, 19.9 ft, site 

and datum then in use); minimum, 2 cfs Mar. 17-28, 1936 (gage height, 1.18 ft).

Remarks. Records good. Flow regulated by American Falls Reservoir (see p. 51), Lake 

Walcott (see p. 57) and other reservoirs having a combined usable capacity of about 

4,700,000 acre-ft. About 1,340,000 acres of land irrigated by diversions from river 

and its tributaries above station, from which the return flow in large part enters 

Snake River between Milner and King Hill stations. Flow includes some stored water 

released for use downstream by Idaho Power Co.

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

Revisions [water years). WSP 1347: 1909-12, 1915-16, 1942-44, 1946-48.

Rating table, water year 1956-57 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used May 10 to June 4)

2.2 

2.6

3.0 

3.5 

4.0

39

75

128

223

360

5.0 726

6.0 1,400

7.0 2,320

8.0 3,500

10.0 5,580

12.0 7,910

14.0 10,600

16.0 13,800

18.0 17,600

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

398 

731 

626

290

296

1,340

2,480

2,330

1,990

554

1,870

4,370

5,240

4,200

3,910

2,080

*924

2,290

2,260

2,390

2,370

2,450

2,420

2,250

2,490

2,750

2,620

2,390

2,290

2,050 

2,000

66,649

2,150

132,200

Nov.

2,040 

2,030 

2,010

1,990

2,390

2.540

2,320

2,320

2,180

2,050

1,790

1,720

1,480

1,520

1,260

1,150

936

858

1,060

1,440

1,760

1,870

1,870

1,870

1,860

1,860

1,860

1,880

1,960

2,030

53,904

1,797

106,900

Dec.

2,040 

2,010 

2,000

*1,970

1,990

1,980

2,000

2,000

2,000

2,000

1.960

2,000

2,000

2,060

2,120

2,120

2,180

2,320

2,390

2,340

2,220

2,100

2,190

2,230

2,220

2,210

2,200

2,210

*2,200

2,210 

2. 440

65,910

2,130

130,700

Jan.

2,930 

3,220 

3,390

3,650

4,110

4,090

3,700

3,120

2,900

2,980

3,230

3,300

3,220

2,920

2,860

2,910

2,880

2,750

2,940

3,090

2,910

2,520

2,580

2,630

2,640

2,610

2,610

2,670

3,030

3,820 

*4, 510

96,720

3,120

191,800

Feb.

4,740 

4,470 

3,040

2,380

2,230

2,200

2,180

2,180

2,210

2,260

2,240

2,230

2,200

2,200

2,210

2,230

2,230

2,230

2,210

2,170

2,180

2,190

2,190

2,210

2,230

2,210

*2,210

2,490

-

67,950

2,427

134,800

Mar.

2,570 

2,580 

2,620

2,800

2,790

3,370

3,750

4,590

5,560

5,300

4,890

4,060

3,580

3,690

3,730

4,240

4,580

4,570

4,540

4,530

4,160

4,560

4,790

4,760

4,740

4,760

6,170

7,810

7,830

7,900 

8, 100

143,920

4,643

285,500

Apr.

8,350 

8,870 

8,330

7,780

6,720

5,710

5,520

4,690

4,740

*4,890

*5,020

4,960

5,050

5,030

5,030

5,760

5,550

5,110

5,170

6,310

6,600

5,820

5,490

6,350

6,570

6,200

5,900

5,210

4,220

5,150

174,100

5,803

345,300

May

2,560 

1.640 

3,100

3,860

3,650

2,860

2,900

3,910

3,740

4,560

7,040

8,650

9,700

*11,700

13,100

12,300

12,300

12,800

15,100

16,100

17.600

16,800

*15,900

16,000

16,000

16,000

14,600

11,300

8,920

7,900 

*7,960

300,550

9,695

596,100

June

7.290 

6,690 

6,220

4,770

1,640

180

161

161

163

666

988

*229

221

532

109

75

120

74

53

52

52

55

100

91

103

*63

59

58

59

62

31,096

1,037

61,680

July

*61 

59 

58

131

119

64

71

70

66

67

64

48

41

li

119

*279

246

253

256

258

271

285

Tfs

266

282

261

*256

271

282

285

282

5,389

174

10,690

Aug.

266 

282 

293

285

279

*279

303

301

266

285

333

330

285

271

274

274

279

279

279

*282

285

279

274

274

279

277

277

274

277

279 

279

8,779

283

17,410

Sept.

279 

279 

282

298

296

277

279

277

277

285

285

282

298

226

200

205

*207

205

221

431

822

336

205

202

214

214

205

202

202

202

8,193

273

16,250

Calendar year 1956: Max 18,700 Min 190 Mean 3,752 Ao-l't 2,724,000

Water year 1956-57: Max 17,600 Min 39 Mean 2,803 Ac-ft 2,029,000

Discharge measurement made on this day.
DEVILS WASHBOWL SPRING BASIN 71

Devils Washbowl Spring near Kimberly, Idaho

Location.~Lat 42°35', long 114°21', in ffi£ sec. 4, T. 10 S., R. 18 E., 400 ft downstream 

from Devils Washbowl Spring, half a mile upstream from mouth which is half a mile 

upstream from Twin Palls of Snake River, and 3| miles north of Kimberly.

Records available.--April 1950 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 3,540 ft (from river-profile map). 

Prior to May 16, 1953, at datum 0.83 ft lower.

Average discharge.--? years, 22.2 ofs (16,070 acre-ft per year).

Extremes. 1950-57: Maximum daily discharge, 27.5 ofs Oct. 3, 4, 1951; minimum daily, 

18.5 cfs May 15, 1950, Apr. 23-29, 1956.

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

good. No regulation or diversion above station. Discharge affected by variable 

surface waste from irrigation over rimrocks into springs above station and occasionally 

by runoff from snowmelt. Waste was reported not flowing Oct. 2, Jan. 18. Feb. 22. 

Apr. 2, June 19, July 22, and estimated on May 26 (0.5 cfs) and Aug. 26 (0.25 cfs). 

Plow at station is from principal outlet only. On Apr. 2, 1957, a discharge measurement of total spring flow of 23.2 cfs (adjusted for surface inflow) was made.

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

1.0

1.1

1.2

1.3

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

23.5

*24

24

24

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23.5

23

2?

23

23

23

23

23

23

23 

23

23

724.5

23.4

1,440

Nov.

23

2?

23

23

23

23

22.5

22.5

22.5

*22.5

22

22

22

22

22

21.5

22

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21

21.5

21.5

21.5

21

21

659.5

22.0

1,310

Dec.

21

21

21

214

2lTF

21

21

21

21

*20.5

21

21

21

20.5

20.5

21

20.5

21

21

20.5

20.5

20.5

20

20".S

20

20.5

20.5

20. 5

20.5

20

20

642. 0

20.7

1,270

Jan.

2020"

20.5

20.5

20.5

20.5

20.5

20.5

20. 5

20.5

21.5

21.5

21.5

21.5

21

21

21

*21

21.5

22

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21

20 5

652.5

21.0

1,290

Feb.

20.5

2075"

20.5

21

21

20.5

20.5

20.5

20.5

21

21

21

21

21.5

21

20.5

20.5

20. 5

21

21

*20.5

21

21.5

21.5

21

21

20.5

-

583.5

20.8

1,160

Mar.

2020-

19.5

19.5

19.5

19.5

19.5

IS

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

593.5

19.1

1,180

Apr.

19

*1S

19

19

19

19

19

19

19

19

19

19.5

19.5

19

19

19

19

19.5

19.5

19.5

QzS

20

19.5

19.5

19.5

19.5

19.5

19.5

*19.5

579.0

19.3

1,150

May

20

20.5

20.5

20

20

2O

20

20

20

20

20.5

20

20

.124

19T?

20

20.5

20. 5

20. 5

20

2O

20

19.5

19.5

19.5

*19.5

20

20

19.5

19.5

19.5

618.5

20. 0

1,230

June

19.5

T37S

19.5

20

20

20

20

20.5

21.5

21.5

22

22.5

22

22

22

22

22

21.5

»21.5

22

22

22

22

22.5

22.5

23

23

23

23.5 53-75-

648.5

21.6

1,290

July

25.5

24

24.5

24.5

25

24.5

24.5

25

25

25

25

~?5 26

25.5

25.5

25.5

25.5

25.5

25.5

25.5

»25

25

25

25.5

25

25

24.5

25

25

25

775 .O

25.0

1,54O

Aug.

25.5

26 &

25.5

25.5

25

25

25

24.5

24.5

24.5

24.5

24.5

24.5

24

24.5

24.5

24

23.5

23

23

23.5

24

24.5

25

'*25.5

25

25

25

25.5

25

765.0

24.7

1,520

Sept.

26

26

25.5

26

25,5

25.5

.5

25.5

25.5

25.5

25

25

25

25

25

25,5

26,5

26T5-

26

25.5

25

25.5

25.5

25.5

25.5

25.5

*25.5

25.5

25.5

765.5

25.5

1,520

Calendar year 1956 : Max 24.5 Mln 18.5 Mean 20.8 Ac-ft 15,130

Water year 1956-57 : Max 26.5 Mln 19 Mean 21.9 Ac-ft 15,9OO

* Discharge measurement made on this day. 

Note. No gage-height record Mar. 11 to Apr. 

records for nearby springs.

1; discharge Interpolated or estimated on basis of
72 SNAKE RIVER MAIN STEM

Snake River near Kimberly, Idaho

in NW£ sec. 4, T. 10 S., R. 18 E., on left bank 

ft downstream from Twin Palls powerplant, 8-5- miles upstream from Shoshone Palls,

Location.--Lab 42°36', long 114°22 

1,200 ft downstream from Twin 

and 4 miles north of Kimberly.

Records available. July 1923 to September 1957.

Sage. Water-stage recorder. Datum of gage is 3,362.67 ft above mean sea level (levels 

oy Idaho Power Co.). Prior to Aug. 31, 1938, at site 2,000 ft downstream at different 

datum.

Average discharge.--34 years, 2,609 cfs (1,889,000 acre-ft per year).

Extremes. Maximum discharge during year, 19,200 cfs May 21 (gage height, 18.62 ft); minimum, 26 cfs June 22 (gage height, 1.55 ft); minimum daily, 370 cfs July 9.

1923-57: Maximum discharge, 27,200 cfs July 4, 1927 (gage height, 14.76 ft, site 

and datum then in use), from rating curve extended above 20,000 cfs; minimum recorded, 

10 cfs May 17, 1944 (gage height, 1.15 ft); minimum daily recorded, 139 cfs July 4, 

1941.

Remarks. Records excellent. Plow regulated by Twin Palls powerplant and several reservoirs above station. At times practically entire flow is diverted at Milner during 

irrigation seasons; no diversion between Milner and Kimberly.

Revisions (water years). WSP 1347: 1924-26, 1928-30, 1942-44, 1946-48.

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

4.0 

4.5 

5.0 

5.5 

6.0 

7.0 

8.0

332

445

580

740

925

1,350

1,840

9.0

11.0

13.0

15.0

17.0

19.0

2,520

4,500

7,170

10,700

15,000

20,100

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

834 

993 

1,260

1,070

800

1,060

2,780

2,930

2,730

1,480

1,270

4,430

5.410

4,670

4,110

3,480

1,120

2,400 

2,680

2,750

2,760

2,780

2,820

2,660

2,820

3,000

3,060

2,800

2,740

2,610

2,430

78,737

2,540

156,200

Nov.

2,470 

2,490 

2,450

2,420

2,610

5,030

2,830

2,740

2,760

*2,540

2,360

2,120

2,050

1,850

1,940

1,560

1,620

1.520 

1,520

1,940

2,050

2,290

2,290

2,290

2,290

2,280

2,280

2,290

2,320

2,420

67,420

2,247

135,700

Dec.

2,460 

2,450 

2,450

2,450

2,410

*2,410

2,400

2,590

2,4bO

2,430

2,460

2,410

2,490

2,450

2,530

2,590

2,600

2,670 

2, 780

2,760

2,700

2,560

2,570

2,660

2,650

2,650

2,610

2,610

2,610

2, 620

2,660

78,850

2,544

156,400

Jan.

5,180 

3,360 

3,590

5,750

4,180

4,540

4,040

5,440

5,160

5,200

3,380

3,530

3,450

5,240

5,100

5,140

3,150

*3,060 

3,130

3,350

5,230

2,860

2.850

2,880

2,890

2,910

2,920

2,850

5,100

5,700

4.560

103,460

3,337

205, 200

Feb.

4.850 

4,730 

3,470

2,790

2,560

2,540

2.500

2,550

2,580

2,620

2,620

2,590

2,570

2,570

2,560

2,570

2,580

2,590 

2,570

2,530

*2,540

2,580

2,580

2,580

2,630

2,630

2,600

2,720

-

77,780

2,778

154,300

Mar.

2.880 

2,910 

2,910

5,060

3,080

3,440

5,880

4,610

5,620

5,550

5,090

4,430

5,760

5,900

5,910

4,520

4,720

4,740 

4,690

4,700

4,580

4,650

4,910

4,930

4,920

4,920

5,760

7,860

8,070

8,090

8.490

149,140

4,811

295,800

Apr.

8,540 

9.160 

8,800

8,540

7,200

6,150

5,790

5,150

4,900

*5,090

5,200

5,200

5,220

5,260

5,200

5,820

5,960

5,360 

5,590

6,510

7,000

6,260

5,680

6,400

6,800

6,550

6,160

5,520

4,640

5.560

182,610

6,087

362,200

May

*3,060 

2.520 

2,610

4,050

4,000

3,320

3,100

4,010

5,940

4,450

6,780

8,870

9,640

11,500

12,900

12,400

12,200

12,400 

14,900

16,000

17.600

17,500

16,100

16,000

16,000

*16,200

14,800

11,800

9,550

8, 240

8,540

304,580

9,825

604,100

June

7,780 

7,080 

6,800

5,720

2,860

1,250

625

447

512

717

1,500

1,250

814

641

905

567

504

414 

*491

454

421

415

432

448

506

455

426

448

410

424

45,476

1,516

90,200

July

423 

428 

405

425

455

477

504

426

370

445

439

439

437

429

418

514

659

655 

651

643

681

*648

699

709

689

676

694

690

710

713

7E6

17,251

556

54,220

Aug.

771 

710 

756

720

779

750

722

790

768

691

742

777

792

752

754

714

752

758 

756

765

809

75f

741

704

*730

731

725

743

729

750

772

23,109

745

45,840

Sept.

772 

767 

749

741

796

796

770

755

755

756

779

775

767

781

680

707

705

739 

715

714

1,080

1.250

868

774

690

697

716

*715

691

694

23,174

772

45,960

Calendar year 1956: Max 19,700 Mln 551 Mean 4,147 Ac-ft 3,011,000

Water year 1956-57: Max 17,600 Mln 370 Mean 3,155 Ac-ft 2,284,000

Discharge measurement made on this day.
BLUE LAKES SPRING BASIN

Blue Lakes Spring near Twin Falls, Idaho

37', long 114°28', in N|SE£ sec. 28, T. 93., R. 17 E. , on left bank at 

1 Blue Lake, 1.4 miles northwest of Perrine Memorial Bridge and 3f miles

Location. Lat 42 

outlet of upper 

north of Twin Falls.

Records available. April 1950 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 3,300 ft (from Snake River profile map).

Average discharge. 7 years, 230 cfs (166,500 acre-ft per year).

Extremes. 1950-57: Maximum daily discharge, 256 cfs Nov. 10, 11, 1951, Oct. 24 to 

 Nov. 13, 1952, Sept. 29, 30, 1953; minimum daily, 208 cfs June 5, 8-23, 25-28, 1950, 

May 16 to June 7, 1955, May 17, 18, 1956.

Remarks. Records excellent. No regulation or diversion above station.

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, In cubic feet per second)

1.7

1.8

1.9

190

224

266

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

240 240"

240

240

240

240

240

240

240

240

244

240

240

240

240

240

240

240

240

244

244

244

248

244

244

244

244

244

244

244

7,500

242

14,880

Nov.

244

244

244

244

244

244

244

244

240

 240

240

240

240

240

240

240

240

240

240

240

240

240

236

236

232

- 232

232

232

232

232

7,176

239

14,230

Dec.

228

228

228

228

228

228

228

228

228

228

 228

228

228

228

228

228

228

224

224

224

224

224

224

224

224

224

224

224

224

224

224

7,012

226

13,910

Jan.

224

224

224

224

220

224

224

224

224

224

224

220

220

220

220

220

*220

220

220

220

220

220

220

220

220

220

220

220

220

220

220

6,860

221

13,610

Feb.

220

225

220

224

224

220

224

224

224

224

224

224

224

224

224

224

224

220

220

220

 220

220

220

220

220

220

220

220

6,212

222

12,320

Mar.

220" 220

216

216

220

220

216

216

220

216

220

220

220

220

220

220

220

220

216

216

216

216

216

216

216

212

212

212

*212

216

212

6,728

217

13,340

Apr.

216

216

216

216

216

216

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

6,384

213

12,660

May

212

*212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

216

2T6

216

216

216

212

212

 212

212

212

212

6,592

213

13,080

June

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

*212

212

212

212

216

2T2

212

212

216

216

216

216

6,380

213

12,650

July

 212 212

212

212

212

212

212

216

216

216

216

216

212

212

212

212

212

212

212

212

212

216

*216

216

216

216

216

220

220

220

220

6,648

214

13,190

Aug.

220

220

220

220

220

220

220

224

224

224

228

228

228

228

228

228

228

228

228

228

228

 228

228

228

228

228

232

232

232

232

236

7,024

227

13,930

Sept.

236

235

236

236

236

236

236

236

236

236

236

236

236

236

236

236

236

240

240

240

240

240

240

240

240

240

 240

240

240

240

7,132

238

14,150

Calendar year 1956: Max 248 Min 208 Mean 225 Ac-ft 163,400

Water year 1956-57: Max 248 Mln 212 Mean 224 Ac-ft 162,000

Discharge measurement made on this day.

503667 O - 59 - 6
74 ROCK CREEK BASIN 

Rock Creek near Rock Creek, Idaho

Location.--Lat 42°22' , long 114 0 18' , in sec. 25, T. 12 S., R. 18 E., on right bank Ql mile 

downstream from road bridge, three-quarters of a mile downstream from West Pork Rock 

Creek, 5 miles south of Rock Creek settlement, and 12 miles south of Hansen.

Drainage area. 80 sq mi, approximately.

Records available . November 1909 to August 1913, November 1938 to July 1939, November 

1943 to September 1957.

;e. Water-stage recorder. Altitude of gage is 4,340 ft (by barometer). Nov. 28, 1909, 

to Aug. 16, 1913, staff gage at site 2 miles downstream at different datum. Nov. 23, 

1938, to July 21, 1939, staff gage at present site at datum 1.25 ft higher than present 

datum.

Average discharge. 15 years (1910-12, 1944-57), 35.5 cfs (25,700 acre-ft per year).

Extremes. Maximum discharge during year, 315 cfs May 20 (gage height, 2.77 ft); minimum, 

6.0 cfs Jan. 16, but may have been less during periods of ice effect.

1909-13, 1938-39, 1943-57: Maximum discharge observed, 429 cfs May 21, 1912 (gage 

height, 10.4 ft, site and datum then in use); minimum observed, 3.6 cfs Aug. 7-12, 

1910 (gage height, 0.3 ft, site and datum then In use).

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

Small ranch diversions above station.

Rating table, water year 1956-57, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used May 12 to Sept. 30)

0.5 

.6 

.7 

.8

1.0

1.4 

1.8 

2.4

3.0

62

108

201

322

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

8.3

8.3

*7.9

7.9

7.9

7.9

7.9

8.3

8.3

9.0

11

10

10

9.8

9.4

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.4

10

10

18

T5~ 20

13

12

14

317.3

10.2

629

Nov.

12

12

12

12

12

13

14

IS

13

*12

12

12

12

11

11

12

14

14

10

9.4

13

12

12

12

11

11

11

11

11

11

357.4

11.9

709

Dec.

11

11

11

11

11

9.4

bS~7.4

9.0

*14

22

28

?5

26

22

21

20

19

18

16

16

13

16

16

15

13

14

14

14

14

14

478.8

15.4

950

Calendar year 1956: Max 147

Jan.

13

13

11

13

8.3

9.4

11

15

12

11

14

13

13

13

12

11

b7 *b9

11

14

12

9.8

11

11

11

b9.5

b7.5

b8.5

blO

b8.5

9.4

341.9

11.0

678

Feb.

13

12

11

blO" b9.5

11

11

12

12

11

11

11

11

14

14

13

13

13

13

14

14 *21

29

28

38

38

48

47

_

498.5

17.8

989

Min 6.1

Mar.

39

38

35

34

37

36

45

52

5£

54

49

47

42

38

35

34

32

30

29

29

30

28

26

2ff

28

28

26

26

28

 33

34

1,104

35.6

2,190

Apr.

34

33

37

33

35

46

44

45

48

53

58

60

64

68

69

70

69

70

70

66

63

65

65

67

65

62

59

59

65

75

1,713

57.1

3,400

Mean 29.3

May

158- 96

150

 148

139

148

165

179

199

210

209

207

220

236

242

240

246

250

290

509

298

300

302

288

270

*248

216

198

179

162

142

6,614

213

13,120

June

122 m

108

96

90

87

80

75

73

74

64

61

57

54

52

53

48

44

 41

40

39

37

35

32

32

30

30

29

28

37T

1,755

58.5

3,480

July

32

TT

26

£4

£4

22

22

21

20

20

19

19

18

18

17

17

16

16

16

16

15

15

 14

14

14

13

13

12

IS

12

12

557

18.0

1,100

Aug.

iS.

11

11

10

10

10

10

9.8

9.8

9.0

9.0

9.0

9.0

8.7

8.7

8.7

STJ- 8.3

8.3

8.3

8.7

9.0

8.7

8.3

 8.3

8.3

8.3

8.7

9.4

10

9.8

286.4

9.24

568

Sept.

9.4

T^»

8.7

8.3

8.3

7.9

7.9

7.9

8.3

8.7

8.7

7.9

7.9

7.9

7.9

7.9

7.7

57?

9.4

9.4

9.0

9.0

8.7

8.3

7.9

7.7

7.7

 7.9

8.7

8.7

251.0

8.37

498

Ac-ft 21,290

Water year 1956-57: Max 309 Kin 7 Mean 39.1 Ac-ft 28,310

Peak discharge (base, 130 cfs). May 20 (8:30 a.m.) 315 cfs (2.77 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
CEDAR DRAW BASIN 7 

Cedar Draw near Filer, Idaho

Location. Lat 42"37"25", long 114°39'05", in SWiJ-SWv sec. 24, T. 9 S. , R. 15 E. , on left 

bank Just upstream from county road bridge, 2i miles upstream from mouth and 4f miles 

northwest of Filer. "*

Records available. July 1955 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 3,525 ft (from topographic map).

Extremes.--Maximum discharge during year, 433 cfs May 18 (gage height, 3.57 ft), from 

rating curve extended above 210 cfs by logarithmic plotting; minimum, 18 cfs Apr. 3 

(gage height, 0.37 ft) .

1955-57: faximum discharge, that of May 18, 1957; minimum, that of Apr. 3, 1957.

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

flow is principally waste and return flow from irrigation and stock water delivered 

to adjacent lands by Twin Falls Canal Co.-, and is affected by operation of laterals 

and canals upstream.

Rating table, water year 1956-57 (gage height, In feet, and 

discharge, In cubic feet per second)

0.4 

.6 

.8

1.0 

1.3

1.6 

2.0 

2.5 

3.0 

3.5

124

173

241

320

408

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

2E

26

27

28

29

30

31

Total

Moan

Ao-ft

Oct.

70

70

70

70

69

68

68

68

69

68

125

198

. TTf

62

59

51

48

48

46

64

158

158

152

107

56

56

56

51

51

51

52

2,458

79.3

4,880

Nov.

5L

5T

51

a5D

a5D

a49

a4B

a4S

*47

43

46

46

47

45

43

44

44

44

42

42

42

42

42

41

41

41

41

41

JO

4T

~~ " ~~

1,348

44.9

2,6"0

Deo.

38

38

41

42

42

39

38

36

37

44

*62

68

71

33

38

38

38

38

37

37

36

34

45

43

42

36

34

34

36

37

35

1,297

41.8

2,570

Jan.

34

34

34

34

32

32

56

~T& 100

32

32

32

34

34

34

*31

30

30

30

32

a30

a30

a30

a30

a30

a30

a30

a29

a29

a29

a29

1,109

35.8

2,200

Feb.

a28

a28

a28

a28

a28

a 28

a35

45

44

44

45

45

46

47

46

47

46

47

*47

47

48

" 61

39

28

SI

27

28

27

-

_ --.-

1,074

38.4

2,130

Mar.

27

27

34

L07

30

27

27

26

27

34

~S6 120

26

25

26

26

26

26

25

26

26

24

23

24

24

24

23

23

*24

24

23

1,042

33.6

2,070

Apr.

23

22

22

24

21

21

20

23

23

24

24

24

26

29

28

27

70

118

155

145

71

54

34

34

36

36

39

143

142

82

1,537

51.2

3,050

May

36

*60

85

122

41

37

31

3S

133

182

182

168

110

113

144

128

129

184

359

30T

238

212

213

210

173

149

181

*96

108

128

62

4,350

140

8,630

June

39

61

92

40

38

39

41

54

63

116

136

146

198

224

227

221

214

209

203

*176

152

119

99

75

58

54

50

47

44

43

------

3,278

109

6,500

July

41

39

4T

43

47

44

44

44

46

43

42

44

52

47

46

47

47

47

47

45

*45

50

48

50

51

51

52

53

55

54

55

1,460

47.1

2,900

Aug.

55

58

59

58

56

56

56

54

52

55

54

57

56

58

57

54

54

55

56

59

*57

56

57

61

62

62

62

62

64

70

11

1,804

58.2

3,580

Sept.

79

76

76

78

78

76

78

81

84

82

82

82

80

81

83

84

85

98

143

253

234

220

158

161

 163

130

80

74

70

69.

3,218

107

6,380

Calendar year 1956: Max 210 Win 21 Mean 58.1 Ao-ft 42.21O

Water year 1956-57: Max 359 Min 20 Mean 65.7 Ao-ft 47,560

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range in stage, 

and records for nee.rby streams.
76 SNAKE RIVER MAIN STEM

Snake River near Buhl, Idaho

Location. Lat 42°40' , long 114 0 43', in NWij sec. 9, T. 93., R. 15 E., on left bank

2 miles downstream from Niagara Springs, 3-f miles upstream from outlet of Clear Lakes, 

and 6 miles northeast of Buhl.

Records available.--December 1946 to September 1957.

Gage. Water-stage recorder. Datum of gage is 2,952.9 ft above mean sea level, by stadia 

levels. Prior to Jan. 17, 1947, staff gage at same site and datum.

Average discharge. 10 years (1947-57), 5,117 cfs (3,705,000 acre-ft per year).

Extremes.--Maximum discharge during year, 21,000 cfs May 22 (gage height, 9.68 ft); minimum, 2,070 cfs June 30 (gage height, 0.60 ft).

1946-57: Maximum discharge, 23,100 cfs June 13, 1947 (gage height, 10.34 ft); minimum observed, 1,900 cfs May 5, 1947 (gage height, 0.38 ft).

Remarks. Records excellent. Flow regulated by Twin Palls and Shoshone Palls powerplants and several reservoirs above station. No diversion except by small ranch 

ditches between this-station and station at Milner, where at times practically entire 

flow is diverted during irrigation seasons.

Rating table, water year 1956-57 (gage height, In feet, and 

discharge, In cubic feet per second)

0.7 

1.0 

2.0 

3.0 

4.0

2,150

2,400

3,450

4,750

6,450

8,550

10,900

16,100

22,000

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

2,960 

3,060

3,260

3,330

3,030

2,940 

4,180

5,090

4,800

4,170

3,460

5,610

7,220 

7,040

6,080

5,720

3,430

3,790

4,500 

4,630

4,880

4,940 

4,890 

4,690

4,690

4,930

5,070

4,700

4,620

4,570

4,370

140,650

4,537

279,000

Nov.

4,330 

4,360

4,320

4,290

4,300

4.860 

4,690

*4,540

4,590

4,410

4,230

3,970

3,950 

3,710

3,760

3,510

3,440

3,290

5.120 

3,520

3,700

3,990 

4,030 

4,030

4,030

4,030

4,030

4,020

4,030

4,110

121,190

4,040

240,400

Dec.

4,170 

4,160

4,160

4,170

4,150

4,140 

4,060

4,040

4.050

4,100

4,230

4,190

4,210 

4,170

4,170

4,260

4,240

4,280

*4,450 

4,410

4,370

4,250 

4,150 

4,280

4,260

4,240

4,210

4,200

4,210

4,210

4,210

130,540

4,205

258,500

Jan.

4,600 

4,850

5,120

5,210

5,550

5,900 

5,740

5,230

4,850

4,680

4,830

5,100

5,050 

4,950

4,640

4,660

*4,640

4,590

4,590 

4,880

4,850

4,490 

4,560 

4,420

4,420

4,420

4,420

4,420

4,560

5,070

6,010.

151,060

4,875

299,600

Feb.

6,500 

6,410

5,440

4,580

4,120

,060 

,000

,050

,060

,100

,120

,080

,070 

,080

,080

,080

,070

* ,080

,070 

,040

,040

,070 

,110 

,070

,120

4,120

4,110

4,120

-

120,430

4,301

238,900

Mar.

4.550 

4,360

4,420

4,560

4,600

4,680 

5,260

5,850

6,870

7,150

6,680

6,130

5,230 

5,260

5,330

5,570

6,100

6,120

6,100 

6,080

5,850

5,920 

6,210 

6,300

6,280

6,220

6,720

8,920

*9,610

9,580

9,860

192,150

6,198

381,100

Apr.

9,980 

10,500

10,300

9,860

8,780

7,650 

7,150

6,700

6,220

6,490

6,580

6,640

6,660 

6,770

6,720

7,150

7,720

7,150

7,170 

7,890

8,920

8,250 

7,480 

7,890

8,500

8,390

7,940

7,420

6,580

5,490

250,900

7,697

458,000

May

*4,800 

4,200

5,750

5,530

5,690

5,180 

4,630

5,120

5,690

5,970

7,840

10,700

11,300 

13,000

14,800

14,500

14,100

14,400

17,000 

18,400

19,400

20,100 

18,500 

18,300

18,200

18,200

17,000

14,500

*1 1,800

10,300

10,100

562,780

11,700

719,600

June

9.680 

8,940

8,710

7,650

5,170

5,650

2,760

2,570

2,500

2,600

2,950

3,450

3,150 

2,990

3,100

3,100

2,820

2,600

2,540 

*2,510

2,470

2,580 

2,540 

2,500

2,290

2,270

2,250

2,230

2,200

2, 150

105,860

3,529

210,000

July

2,190 

2,200

2,190

2,190

2,190

2,220 

2,260

2,240

2,190

2,190

2,190

2.180

2,210 

2,250

2,220

*2,220

2,540

2,450

2,510 

2,510

2,490

2,540 

2,520 

2,550

2,540

2,540

2,580

2,600

2,630

2 630 2 1 640

73,380

2,367

145,500

Aug.

2,700 

2,680

2,680

2,690

2,710

2,700 

2,670

2,660

2,680

2,630

2.570

2,650

2,660 

2,670

2,650

2,620

2,610

2,610

2,620 

*2,650

2,700

2,680 

2,660 

2,680

2,710

2,710

2,700

2,750

2,750

2 780

2, 800

82,990

2,677

164,600

Sept.

2,840 

2,860

2,850

2,860

2,870

2,880 

2,880

2,890

2,930

2,940

2,950

2,950

2,960 

2,960

3,000

2,960

2,940

3,020

3,090 

3,160

3,200

5,520 

3,370

*3,150

3,040

2,980

2,860

2,880

2,860

2>820

89,470

2,982

177,500

Calendar year 1956: Max 20,800 Mln 2,400 Mean 5,869 Ac-ft 4,261,000

Water year 1956-57: Max 20,100 Mln 2,150 Mean 4,935 Ac-ft 3,573,000

Discharge measurement made on this day.
DEEP CREEK BASIN 77 

Deep Creek near Buhl, Idaho

Location. Lat 42°37'05", long 114°50'40" , in SEijNW^ sec. 29, T. 9 S., R. 14 E., on right 

bank 0.2 mile downstream from Twin Palls Canal Co. diversion dam, a quarter of a mile 

upstream from U. S. Highway 30, 4| miles northwest of Buhl, and 5 miles upstream from 

mouth.

Records available.--July 1955 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 3,500 ft (by barometer).

Extremes. Maximum discharge during year, 389 cfs Dec. 11 (gage height, 2.82 ft); minimum daily, 2 cfs several days in April, May, and July.

1955-57: Maximum discharge, that of Dec. 11, 1956; maximum gage height, 2.90 ft 

Nov. 27, 1955; minimum daily, 1.3 cfs Apr. 4-6, 1956.

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

Flow is waste from irrigation and stock water delivered to adjacent lands by Twin 

Palls Canal Co. and is completely controlled by gates 0.2 mile upstream.

Rating tables, water year 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Feb. 28 Mar. 1 to Sept. 30

0.4 

.6 

.9

1.3

69

121

1.8 

2.3 

2.8

197

288

385

-0.1

0.0

.1

2.5

5.5

9.3

20

34

0.7 

1.0 

1.5 

2.0 

2.5

85

157

244

339

Discharge, in cubic feet per second, water year October 1956 to September 1957

Da.y

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

Total

Mean

Ac-ft

Oct.

178

181

186

195

181

179

181

192

209

218

269

218

162

124

54

41

34

30

29

29

188

191

167

160

212

271

237

153

140

144

156

4,909

158

9,740

Nov.

154

206

207

191

192

186

183

184

*184

227

265

258

256

Z54

250

282

263

216

199

164

192

299

299

303

299

286

280

269

254

267

7,069

236

14,020

Dec.

267

258

278

278

261

245

170

135

197

324

351

*334

316

248

219

206

*214

207

204

225

221

124

174

269

280

230

181

194

223

2i9

202

7,254

234

14,390

Jan.

219

204

200

199

214

200

150

190

178

194

223

258

252

246

*236

218

199

171

197

258

246

Z32

204

243

254

237

a225

a220

a220

a215

6,717

217

13,320

Feb.

a220 'S23

a225

a230

234

243

248

236

239

239

239

245

246

250

252

246

246

252

*260

265

261

290

337

351

336

309

322

330

-

7,374

263

14, 630

Mar.

316

30T

280

212

240

269

244

141

119

155

110

86

129

165

167

163

159

159

152

140

136

134

147

157

167

*162

147

155

182

loy

168

5,421

175

10,750

Apr.

149

143

40

a4

a!

a2

a5

39

152

157

104

88

78

97

109

122

147

112

208

185

167

151

146

180

170

149

168

167

151 

a!6

3,408

114

6,760

May

al4

*al8

74

a41

a!

a!2

a!5

a2

88

61

94

95

90

134

157

157

149

180

167

129

122

159

187

T83

129

97

83

*52

63

al3

a6

2,773

89.5

5,500

June

a3

a4

a!3

a9

a!4

alo

a!3

15

33

85

45

112

116

118

170

212

204

151

89

*57

64

67

51

38

40

21

28

26

15 

a3

1,826

60.9

3,620

July

a2

a2

a!3

10

18

22

20

20

a3

a2

a2

a6

12

2Z

20

16

*a8

a2

a!3

17

17

27

15

15

7.2

5.9

11

20

28 

34

32

442.1

14.3

877

Aug.

41

66

71

68

59

41

46

45

35

25

15

15

19

20

24

29

22

14

24

*14

12

12

12

a8

alo

28

12

15

23 

43

52

920

29.7

1,820

Sept.

47

54

55

51

58

60

61

47

62

94

141

130

104

104

97

98

122

151

213

222

173

144

143

*140

126

119

178

175

176 

201

3,546

118

7,030

Calendar year 1956; Max 351 Min 1.3 Mean 138 Ac-ft 1OO.200

Water year 1956-57: Max 351 Kin Z Mean 142 Ac-ft 102,500

* Discharge measurement made on this day.

a No gage-height records discharge estimated on basis of 2 discharge measurements, partlalgage-height record, and records for nearby tributaries to Snake River.
78 BOX CANYON SPRINGS BASIN

Box Canyon Springs near Wendell, Idaho

Location. Lat 42°42 I 30", long 114°48'45", In NE£ sec. 28, T. 8 S., R. 14 E. , on left 

bank 150 ft downstream from waterfall, half a mile upstream from mouth, three-quarters 

of a mile downstream from source, and 7| miles southwest of Wendell.

Records available.--April 1950 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 2,950 ft (from topographic map).

Average discharge. 7 years, 420 cfs (304,100 acre-ft per year).

Extremes. 1950-57; Maximum dally discharge, 480 cfs Sept. 29, 1950; minimum dally, 

3~72~cfs Apr. 12, 1951, Mar. 23-27, 1956, May 4, 1957.

Remarks. Records excellent. No regulation or surface diversion above station. Discharge 

affected by variable surface waste from irrigation canals over rimrocks into springs 

above station. This waste was reported not flowing Nov. 8, Dec. 18, Jan. 17, Feb. 18, 

Mar. 26, Sept. 24, and estimated on May 29 (0.5 cfs), June 22 (1 cfs), July 16 (2 cfs), 

Aug. 21 (2 cfs).

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, in cubic feet per second) 

(Shifting-control method used Sept. 8-30)

1.4

1.5 

1.7 

1.9

352

377

427

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

458

458

458

458

458

456

458

458

458

458

458

45S

458

458

458

456

456

456

453

453

450

450

453

450

448

448

448

448

448 

448

445

14,078

454

27,920

Nov.

443

440

440

437

437

435

432

*432

432

432

432

432

435

432

430

432

432

430

427

427

424

424

422

424

424

424

424

424

422 

422

12,903

430

25,590

Dec.

420

424

424

427

424

422

420

417

414

420

424

422

422

420

417

417

417

*414

412

412

414

412

412

412

407

410

412

414

417

417 

412

12,928

417

25,640

Jan.

412

412

410

410

410

410

410

410

410

407

410

410

410

410

407

404

*407

407

407

410

407

407

407

407

407

404

404

404

404 

404

402

12,640

408

25,070

Feb.

402

402

402

402

402

402

402

400

400

397

397

397

397

394

397

397

394

*397

397

397

397

397

397

397

394

394

394

397

-

11,142

398

22,100

Mar.

397

397

397

394

394

394

394

394

397

397

394

397

394

394

394

394

394

397

394

394

397

394

392

392

392

*392

392

392

392 

392

12,220

394

24,240

Apr.

392

390

392

390

390

390

390

387

384

384

384

384

382

384

384

384

384

382

382

380

380

380

382

380

380

380

374

374

377

377

11,503

383

22,820

May

*374

377

377

374

374

377

382

384

390

390

392

392

392

394

394

397

397

400

402

402

4,02

402

402

402

402

400

402

404

*407 

407

407

12,198

393

24,190

June

404

407

410

407

410

412

412

412

410

407

412

414

414

414

417

414

414

414

412

412

412

*410

407

407

407

410

412

414

414 

414

12,335

411

24,470

July

414

414

414

412

414

414

414

414

412

414

414

414

414

417

417

*420

420

420

420

422

422

422

422

422

422

422

422

422

422 

424

424

12,960

418

25,710

Aug.

424

424

427

424

427

427

427

427

430

430

430

430

427

430

430

430

430

432

432

432

*432

430

430

432

432

432

432

432

435 

435

435

13,327

430

26,430

Sept.

435

435

437

437

437

437

440

437

440

440

440

440

440

443

445

445

445

445

445

443

443

443

443

*440

440

443

443

443

443 

445

13,232

441

26,250

Calendar year 1956: Max 458 Min 372 Mean 417 Ac-ft 303,000

Water year 1956-57: Max 458 Min 374 Mean 415 Ac-ft 300,400

Discharge measurement made on this day.
SALMON PALLS CREEK BASIN 79

Salmon Palls Creek above upper Vineyard ditch, near Contact, Nev.

Location. Lat 41°44', long 114°53', near northwest corner sec. 5, T. 44 N., R. 63 E., on 

left bank three-quarters of a mile upstream from former diversion point for upper Vineyard ditch, 1-J- miles upstream from present diversion dam, and 6 miles southwest of 

Contact.

Drainage area.--439 sq mi, approximately.

Records available.--May 1914 to July 1915, October 1948 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 5,570 ft (by barometer). May 17, 1914, 

To July 25, 1915, at site three-quarters of a mile downstream at different datum.

Average discharge. 9 years (1948-57), 94.2 cfs (68,200 acre-ft per year).

Extremes. Maximum discharge during year, 825 cfs May 19 (gage height, 4.21 ft); minimum, 

15 cfs Jan. 22, but may have been less during period of ice effect; minimum gage 

height, 1.14 ft Sept. 14.

1914-15, 1948-57: Maximum discharge, 1,170 cfs May 4, 1952 (gage height, 4.82 ft); 

minimum, 6.8 cfs Dec. 26, 1954 (gage height, 0.93 ft).

Remarks. Records excellent except those below about 30 cfs, which are good, and those 

for periods of ice effect or no gage-height record, which are fair. Many diversions 

above and below station for irrigation.

Rating table, water year 1956-57, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Feb. 14-23)

1.1

1.2 

1.4 

1.7 

2.1

31

58

109

2.5 

3.0 

3.5 

4.0

192

325

500

715

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

*21

22

22

22

21

21

22

23

23

24

27

31

27

25

24

24

24

24

24

24

25

26

26

25

25

26

31

30

27

27

30

773

24.9

1,530

Nov.

28

26

26

27

89

29

29

27

*27

28

28

27

27

26

25

27

29

28

25

b2j

26

27

27

27

27

27

27

27

28

27

810

27.0

1,610

Dec.

29

27

29

*29

30

b29

b20

b20

b24

b26

b34

52

54

47

37

40

37

35

34

32

31

29

29

29

29

28

27

27

27

26

26

973

31.4

1,930

Jan.

26

27

26

26

b21

b20

b21

24

b21

b21

25

25

26

27

*27

26

b25

b22

b25

26

26

b21

b22

b24

b27

24

b21

b!9

b22

b!8 bl6"

731

23.6

1,450

Feb.

b23

1)25

22

b20

b2T

21

22

22

22

21

22

22

22

37

68

49

43

43

47

*71

69

88

151

211

114

94

79

70

-

1,519

54.2

3,010

Mar.

66

66

59

57

58

53

56

76

88

84

75

71

60

52

59

59

54

53

52

53

56

55

54

56

57

64

*59

59

64

76

81

1,932

62.3

3,830

Apr.

81

71

73

73

74

102

123

114

113

122

137

156

169

183

204

216

211

206

211

202

211

197

192

185

183

169

160

162

192

241

4,733

158

9,390

May

298

355

*404

a450

a420

a360

a360

a410

a450

a 500

a 500

a500

a500

a520

a480

*456

468

476

688

706

594

552

520

453

414

397

*418

453

468

500

504

14,577

470

28,910

June

464

468

496

516

540

528

484

442

425

484

355

289

273

257

236

224

197

174

160

162

*133

167

149

143

127

123

120

T22

125

122

8,555

285

16,970

July

122

T58

93

86

81

70

67

66

60

56

53

51

51

49

45

43

39

*40

45

40

38

37

37

37

36

32

32

30

31

31

2£

1,635

52.7

3,240

Aug.

27

26

24

24

23

22

23

22

22

22

22

22

21

20

20

20

21

20

19

2T

21

21

*19

19

21

20

20

20

21

21

23

667

21.5

1,320

Sept.

23

22

21

21

21

20

20

19

19

19

20

20

18

16

17

17

18

19

20

21

21

21

21

21

21

21

*21

21

21

22

602

BO.l

1,190

Calendar year 1956: Max 840 Min 17 Mean 105 Ac-ft 76,520

Water year 1956-57: Max 706 Min 16 Mean 103 Ac-ft 74,380

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 2 discharge measurements and records for 

station near San Jacinto and other nearby streams. 

b Stage-discharge relation affected by ice.
80 SALMON PALLS CREEK BASIN

Salmon Palls Creek near San Jacinto, Nev.

Location. Lat 41°57', long 114°42', in sec. 23, T. 47 N., R. 64 E., on right bank in 

canyon, 600 ft downstream from bridge, on U. S. Highway 93, 750 ft downstream from 

Shoshone Creek, and 5 miles north of San Jacinto.

Drainage area. 1,450 sq mi, approximately.

'Records available. September 1909 to June 1910 (gage heights only), June 1910 to September 1916, October 1918 to September 1957. Monthly discharge only for some periods, 

published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 5,120 ft (by barometer). Prior to 

June 30, 1910, staff gage at nearby site at different datum.

Average discharge.--45 years (1910-16, 1918-57), 134 cfs (97,010 acre-ft per year).

Extremes. Maximum discharge during year, 1,230 cfs May 20 (gage height, 8.48 ft); minimum observed, 8.3 cfs Aug. 24 (gage height, 2.81 ft).

1909-16, 1918-57: Maximum discharge, between 2,060 and 2,420 cfs Feb. 24, 1943 

(gage height exceeded range of recorder, 10.20 ft, but was not more than 1.2 ft 

higher), from rating curve extended above 1,400 cfs; minimum, 2.8 cfs Nov. 13, 1947, 

during channel improvement work upstream.

Remarks --Records good except those for periods of doubtful gage-height record, which 

are poor. Many diversions above station for irrigation. Salmon Dam of Salmon River 

Canal CO., 15 miles below station, forms a reservoir having a capacity of 182,650 

acre-ft (see following page).

Rating tables, water year 1956-57 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Apr. 18 to May 10)

Oct. 1 to May 20

3.7 25

4.0 58

4.5 127

5.0 216

5.5 

6.0 

7.0 

8.4

326

460

760

1,200

2.8 

3.0 

3.2 

3.5 

4.0 

4.5

May 21 to Sept. 30

8.0 5.0

14 5.5

22 6.0

40 7.0

84 8.2

145

225

330

460

760

1,140

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

*35 

35

35

36

35

35

35

36

38

39

43

48

50

46

44

43

43

42

42

43

44

44

45

45

45

46

52

58

58

52

54

1,346

43.4

2,670

Nov.

5£ 

53

48

50

51

52

54

53

*52

51

51

51

51

50

45

53

53

52

44

51

43

54

51

52

54

52

51

47

48

52

1,503

50.1

2,980

Dec.

51 

50

53

*56

57

54

28

28

33

46

73

108

152.

127

104

97

86

80

76

74

63

47

59

69

59

56

50

54

56

57

52

2,055

66.3

4,080

Jan.

53 

54

45

48

44

38

38

48

40

37

46

56

59

62

*60

53

40

36

4?

56

50

36

40

43

46

43

37

38

43

37

40

1,409

45.5

2,790

Feb.

48 

52

46

38

40

45

48

54

54

54

59

63

64

70

173

264

264

219

212

266

*Z03

193

529

BT3

380

316

272

253

4,802

172

9,520

Mar.

205 

178

160

143

140

130

127

178

212

214

191

174

157

133

126

130

122

114

112

110

116

120

106

TTT

114

122

*129

122

130

148

184

4,461

144

8,850

Apr.

189

176

160

158

157

178

236

236

228

242

261

284

307

319

334

344

348

356

364

372

390

377

404

4T5T

390

377

344

321

319 

346

8,918

297

17,690

May

399 

45T

*535

595

574

508

505

586

694

778

799

796

784

847

871

*844

811

859

940

1.160

1,100

1,020

1,080

1,020

910

820

*751

730

739 

745

745

23,999

774

47,600

June

709 

652

652

661

724

694

667

616

589

634

631

469

405

382

356

328

321

270

234

221

*218

216

193

176

158

148

142

137

140 

138

11,881

396

23,570

July

136 

131

117

106

97

90

79

71

66

69

67

61

58

55

51

49

48

*51

53

50

46

44

42

42

43

40

39

37

36 

35

34_

1,943

62.7

3,850

Aug.

33 

32

31

30

25

22

20

19

18

17

16

15

15

15

15

14

12

11

10

11

20

20

12

*8.3

9

10

U

12

14 

17

20

534.3

17.2

1,060

Sept.

20 

2T

22

22

30

31

30

29

28

29

30

31

31

31

30

30

30

32

34

36

37

36

36

35

35

34

*33

33

34 

35

925

30.8

1,830

Calendar year 1956: Max 837 Mln 5.5 Mean 153 Ac-ft 110,800

Water year 1956-57: Max 1,160 Mln 8.3 Mean ^75 Ac-ft 126,500

* Discharge measurement made on this day.

Note. Doubtful gage-height record Aug. 5-23, 25-30, Sept. 1-3; discharge estimated on basis 

1 discharge measurement, recorder record, and records for station near Contact.
SALMON FALLS CREEK BASIN 81

Salmon River Canal Co. reservoir near Rogerson, Idaho

Location. Lat 42°13' , long 114°44', in NE£ sec. 18, T. 14 S., R. 15 E., at dam on Salmon 

Falls Creek, ?| miles west of Rogerson.

Drainage area. 1,610 sq mi, approximately. 

Records available. January 1922 to September 1957.

Gage.--Wire-weight gage read once daily. Datum of gage is 4,945.8 ft above mean sea 

level, datum of 1929, supplementary adjustment of 1947. Prior to Jan. 5, 1955, staff 

gage at same datum.

Extremes.--Maximum contents observed during year, 83,800 acre-ft June 7, 8 (gage height, 

46.00 ft); minimum observed, 6,420 acre-ft Oct. 9, 10 (gage height, 4.90 ft).

1922-57: Maximum contents observed, 123,700 acre-ft May 30, 31, 1922 (gage height, 

61.1 ft); minimum observed, 125 acre-ft Sept. 21 to Oct. 5, 1934 (gage height, 0.1 ft).

Remarks. Reservoir is formed by gravity-section concrete-arch dam completed in 1911; 

storage began in 1910. Capacity, 182,650 acre-ft between gage heights 0.0 (bottom 

of outlet tunnel) and 80.0 ft (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.

Cooperation. Gage readings and capacity table furnished by Salmon River Canal Co.

Capacity table, water year 1956-57 (gage height, in feet, 

and usable contents, in acre-feet)

4.0

5.0

10.0

15.0

20.0

25.0

5,200

6,550

13,800

21,500

30,000

39,100

30.0

35.0

40.0

45.0

50.0

48,800

58,950

69,850

81,450

93,800

Usable contents, in acre-feet, water year October 1956 to September 1957

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

(t)

(*)

Oct.

6,620 

6,700

6,700

6,770

6,840

6,840

6,920

6,620

6.420

6,420

6,480

6,550

6,700

6,700

6,770

6,840

6,920

6,920

7,000

7,000

7,070

7,140

7,280

7,360

7,430

7,430

7,500

7,500

7,580

7,650

7,650

5.75

+1,030

Nov.

7.720 

7,790

7,940

8,010

8,080

8,160

8,230

8,300

8,440

8,520

8,590

8,660

8,740

8,810

8,880

8,950

9,020

9,100

9,170

9,170

9,170

9,240

9,240

9,320

9,460

9,530

9,600

9,680

9,750

9, 820

7.25

+2,170

Dec.

9,900 

9,970

10,000

10,100

10,200

10,300

10,300

10,400

10,400

10,400

10,500

10,500

10,700

11,100

11,500

11,700

11,900

12,100

12,200

12,400

12,400

12,500

12,600

12,600

12,700

12 , 800

12 , 900

13,000

13,100

13,100

13^300

9.65

+3,480

Jan.

15 , 400 

13,400

13,500

13,600

13,600

13,600

13,700

13,700

13,700

13,800

13 , 800

13,900

14,000

14,000

14,200

14,200

14,300

14,400

14,500

14,500

14,600

14,600

14,700

14,800

14,800

14,900

15,000

15.100

15,100

15,100

15,100

10.85

+1 , 800

Feb.

15,200 

15,200

15,200

15,300

15,400

15 , 400

15,500

15,600

15,600

15,700

15,800

15,900

16,000

16,100

16,200

16,400

16,600

17,000

17,600

18,000

18,400

18,900

19,400

19,800

20,800

21,800

22,600

25.200

-

16.00

+8,100

Mar.

25,700 

24 , 200

24,700

25,100

25,400

25,700

25,900

25,300

26,500

26,900

27,300

27,600

28,000

28,100

28,400

28,600

28,800

29,100

29,200

29,400

29,600

29,700

29,900

30,100

30,500

30,500

50,700

30,800

31,000

31,500

31,500

20.90

+8,500

Apr.

51,800 

52,100

32,400

32,600

32,900

35,200

33 , 600

53,900

34,300

34,800

35,100

35,600

56,000

36,500

37 , 000

37,400

58,200

38,700

39,500

40,000

40,600

41,200

41,700

42,400

45,000

43,700

44,300

44,900

45,400

45.900

28.55

+14,400

May

46,500

47 , 800

48,600

49,500

50,500

51,300

52,100

53,000

54,200

55 , 400

56,800

58,100

59,500

60,900

62,400

65,900

65,300

66,700

68,100

69,800

72,000

74,000

75,500

77,000

78,100

79,000

80 , 000

80, 700

81,300

81,800

45.15

+35,900

June

82 , 300 

82,800

83 , 000

83,200

85,500

83,700

83,800

85 , 800

85,700

83,700

83,600

83,600

83,400

83,000

82 , 800

82,600

82,400

82,400

81,900

81,800

81,600

81,300

80,700

80,500

79,900

79,200

78,500

77,600

76,800

75,800

42.60

-6,000

July

75,700 

75,700

75,700

75.800

75,600

74,100

75,000

71,700

70,500

69,300

68,100

66,900

65 , 800

64,600

65,600

62,400

61,100

60,000

59,000

57,800

56,800

55,700

54 , 800

55,900

53,000

52,100

51,100

50,400

49,600

48,800

47 , 900

29.55

-27,900

Aug.

47.000 

46,000

45,300

44,500

43,500

42,600

41,700

40,900

40,000

39,200

58,400

37,400

36,600

35 , 800

34,800

35,900

35,000

32,100

31,200

30,300

29,500

28,700

28,000

27,20Q

26,300

25,500

24,600

23 , 800

23.10C

22.30C

21,60):

15.05

-26,300

Sept.

20,900

19J 700

19,100

18,500

17,800

17,600

17,600

17,600

17,500

17,500

17,500

17,500

17,500

17,500

17 , 500

17,500

17 , 500

17,500

17,500

17,500

17,500

17,500

17,500

17,500

17,500

17,500

17,500

17,500

17 , 500

12.45

-4,100

Calendar year 1956.................... t +3,040

Water year 1956-57.................... t +10,880

t Gage height, in feet, at end of month. 

t Change in contents, in acre-feet.
82 SALMON FALLS CREEK BASIN

Salmon River Canal Co. canal near Rogerson, Idaho

Location. Lat 42°15 I , long 114°45 I , in sec. 7, T. 14 S., R. 15 E., on left bank half a 

mile downstream from Salmon River Canal Co. reservoir and 7 miles west of Rogerson.

Records available.--April 1937 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 4,940 ft (by barometer). Oct. 1, 1953, 

to Sept. 30, 1954, staff gage at same site and datum.

Extremes. 1937-57; Maximum daily discharge, 660 cfs July 21-24, 1944; no flow during 

long periods in each year.

Remarks.--Records excellent. Canal diverts from Salmon River Canal Co. reservoir for 

irrigation of land in Salmon River Canal Co. project.

Discharge, In cubic feet per 3econd, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

0

*0

0

o

0

0

108

~70 136

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0

0

0

0

0

314

10.1

623

Nov.

(*)

0

0

0

Dec.

(*)

0

0

0

Calendar year 1956: Max 543

Jan.

(*)

O

0

0

Feb.

(*)

-

O

o

0

Mln 0

Mar.

(*)

0

0

0

Apr.

0

0

0

Mean 120

May

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

29 

0

0

0

131

205

223

263

*276

307

337

371

575

2,517

81.2

4,990

June

374

387

438

461

494

508

523

524

527

527

516

513

461

416

371

345

315

288

m*310

317

328

372

450

483

520

548

554

TrT

12,799

427

25,390

July

0

0

0

262

602

610

628

627

635

642

643

642

631

602

591

606

603

588

*567 

558

521

502

487

472

456

457

453

440

441

440

437

15,143

488

30,040

Ac-ft 87,270

Aug.

432

429

432

429

425

437

1375

421

418

413

402

397

402

404

418

427

425

424

417 

416

413

413

*411

395

399

402

392

384

351

317

508

12,583

406

24,960

Sept.

292

296

302

309

510

232

0

S

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

*0

0

0

0

0

0

1,741

58.0

3,450

water year 1956-57: Max 643 Mln 0 Mean 124 Ac-ft 89,450

* Discharge measurement or observation of no flow made on this day.
SALMON FALLS CREEK BASIN 83

Cedar Creek Reservoir near Roseworth, Idaho

Location.--Lat 42°13' , long 114°53' , near center sec. 12, T. 14 S. , R. 13 E., Just 

upstream from right end of dam on Cedar Creek, 10^ miles south of Roseworth.

Drainage area.--128 sq ml.

Records available. April to September 1957.

Gage. Wire-weight gage read Intermittently. Altitude of gage Is 5,160 ft (by barometer).

Extremes. Maximum contents observed during period, 18,620 acre-ft June 4 (gage height, 

58.48 ft); minimum observed, 10,220 acre-ft Sept. 15 (gage height, 44.40 ft).

Remarks. Reservoir Is formed by earth-fill dam constructed In 1920; storage began in 

H32T. Total capacity, 29,930 acre-ft at 72.0 ft gage height (crest of spillway). Dead 

storage not known. Water is used for irrigation of lands in Roseworth tract. Since 

1920 water has been diverted from Deadwood Creek (tributary of East Fork Bruneau River) 

and Devil Creek to House Creek which enters Cedar Creek Reservoir.

Capacity table (gage height, in feet, and contents, in acre-feet)

44.0

46.0

48.0

10,000

11,100

12,200

50.0

52.0

54.0

13,300

14,500

15,700

56.0

58.0

60.0

5,910

3,260

3,760

Contents, in acre-feet, 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Apr.

_

_

_

-

_

_

-

_

_

_

-

11,100

_

_

_

May

.

_

_

-

_

14,080

-

_

-

_

-

-

_

_

_

June

18,460

_

18,580

18,620

18,580

18,580

-

18,580

_

-

-

.

_

-

July

.

_

-

-

16,630

16,630

_

-

-

-

-

15,870

_

_

Aug.

_

_

13,540

-

-

-

13,080

_

-

_

-

-

12,420

-

12,200

Sept.

-

-

-

-

-

-

-

_

-

10,440

-

-

-

-

10.220

Day

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Apr.

-

-

-

-

-

-

-

-

-

-

13,300

-

-

-

-

"

May

-

-

-

-

-

-

16,600

-

-

-

-

-

-

-

18,050

18 , 300

June

-

18,260

-

18,080

-

-

-

-

-

-

17,720

-

-

-

17,170

-

July

15,940

-

-

15,570

-

-

-

-

14,840

-

-

-

-

-

-

"

Aug.

-

-

-

-

-

11,670

-

-

-

-

11,290

-

 -

-

-

Sept.

10,250

-

10,280

-

-

-

-

-

-

10,400

-

10,380

-

-

Cedar Creek near Roseworth, Idaho

Location. Lat 42°15' , long 114°52' , In SW^ sec. 31, T. 13 S., R. 14 E. , on right bank

21 ft upstream from stock bridge, 1.7 miles downstream from Cedar Creek Dam,and

8j miles south of Roseworth. 

Drainage area. 130 sq mi, approximately. 

Records available. May 1909 to December 1914, February to June 1916, May to September

1957. 

Gage. Water-stage recorder and artificial control. Altitude of gage Is 5,050 ft (by

iJarometer) . Prior to May 1957, staff gage at site 1.8 miles upstream at different

datum. 

Extremes. Maximum discharge during period May to September, 88 cfs Julj

to Aug. 2; maximum gage height, 2.67 ft Aug. 1; minimum observed, 0..:

height, 0.78 ft).

1909-16, 1957: Maximum daily discharge, 200 cfs (estimated) Mar. 1, 1910 (gage

submerged); minimum observed, that of May 31, 1957. 

Remarks. Records good. Flow completely regulated by Cedar Creek Reservoir (see preceding

page). Several diversions for irrigation above station. Since 1920 water has been

diverted from Deadwood Creek (tributary of East Fork Bruneau River) and Devil Creek to

House Creek which enters Cedar Creek Reservoir.

Discharge, in cubic feet per second, 1957

27, 28, July 29 

cfs May 31 (gage

Day

May 1

2-10

11

12-16

17-22

23

24

25-28

29

30

31

June 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Discharge

9

a!8

25

a35

a45

22

22

a45

*46

23

*20

49

51

58

61

*65

70

72

73

74

74

74

74

74

73

74

73

Day

June 17

18

19

20

21

22

23

24

25

26

27

28

29

30

July 1

2

3

4

5

6

7

8

9

10

11

12

13

Discharge

69

67

67

67

67

67

67

70

72

*75

81

80

79

80

83

82

82

81

83

86

87

87

87

87

86

86

65

Month

May 1957 ......................

June ..........................

July..........................

August ....................

September. ....................

Day

July 14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Aug. 1

2

3

4

5

6

7

8

9

Cfs-days

954

2,097

2 398 4

1J966

722.0

Discharge

1.8

1.6

46

75

83

*84

84

84

83

82

83

84

86

88

87

88

88

88

88

88

81

77

77

77

74

74

74

Maximum

_

81

88

88

44

Day

Aug . 10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Sept. 1

2

3

4

5

Minimum

_

49

1.6

44

7.7

Discharge

74

74

74

71

67

64

62

61

61

59

58

*55

52

52

52

52

48

44

44

44

44

44

44

43

43

43

43

Mean

30.8

69.9

77.4

63.4

24.1

Day

Sept. 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

Discharge

43

43

43

43

40

37

37

37

37

17

7.8

9.7

7.7

8.5

8.5

8.5

8.2

8.2

8.2

8.2

*8.2

8.2

9.1

10

10

Runoff in 

acre-feet

1,890

4,160

4,760

3,900

1,430

* Discharge measurement made on this day. 

a Average for period Indicated.
84 SALMON PALLS CREEK BASIN

Salmon Palls Creek near Buhl, Idaho

Location. Lat 42°36', long 114 0 53', in SWi sec. 36, T. 9 S., R. 13 E., 5 miles northeast 

of Balanced Rock and Castleford crossing, 6 miles west of Buhl, and 9 miles upstream 

from mouth.

Records available. July 1955 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 3,230 ft (by barometer).

Extremes. Maximum discharge during year, 298 cfs Feb. 15 (gage height, 2.89 ft), from 

rating curve extended above 150 cfs on basis of conveyance study and logarithmic plotting; minimum, 69 cfs July 8, 9, 10, 11 (gage height, 1.57 ft).

1955-57: Maximum, that of Feb. 15, 1958; minimum/ 56 cfs Mar. 7, 1956 (gage height, 

1.57 ft).

Remarks . Records good. Only leakage passes Salmon River Canal Co. dam, where flow is 

diverted for irrigation. Flow at station is derived from seepage past dam, underground 

flow from adjacent irrigated land, and surface waste over rim of canyon. Diversion by 

pumping below Salmon River Canal Co. dam and above station for irrigation of 

2,400 acres in project of Magic Water Company, Inc.

Rating table, water year 1956-57 (gage height, in fe

and discharge, in cubic feet per second) 

(Shifting-control method used Oct. I to Nov. 19)

1.5

1.7 

2.0

2.3

2.6

185

248

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

136

138

1ST

136

131

120

120

123

120

115

126

129

125

121

112

102

88

86

56

86

95

128

118

118

118

125

123

117

114

115

118

3,620

117

7,180

Nov.

114

TT2

108

108

108

106

106

*106

104

104

106

106

108

104

103

109

109

104

99

97

95

95

102

100

99

97

96

95

94

95

3,089

103

6,130

Dec.

95

94

95

96

97

96

94

88

 TO 83

 102

106

128

114

100

103

99

*99

97

94

94

94

90

91

94

94

91

90

92

92

91

2,979

96.1

5,910

Jan.

92

94

95

96

95

91

90

86

88

90

90

92

92

95

100

*99

94

91

85

90

92

91

92

91

86

90

88

87

85

85

82

2,814

90.8

5,580

Feb.

83

83

85

86

86

87

82

S6

87

87

87

87

86

87

196

170

136

117

*104

104

100

102

158

148

104

95

94

91

-

2,918

104

5,790

Mar.

88

90

90

88

88

88

91

106" 121

96

91

83

80

85

87

85

85

83

83

90

88

88

90

90

90

*88

88

90

92

92

92

2,786

89.9

5,530

Apr.

94

97

96

85

83_

85

86

87

131

115

112

114

125

123

121

125

125

128

136

117

121

125

128

133

131

136

134

133

125

109

3,460

115

6,860

May

114

*104

121

114

104

100

90

9T

117

136

153

181

177

159

166

164

170

181

191

226

181

187

201

205

179

164

143

*145

138

125

117

4,647

150

9,220

June

115

118

108

100

104

97

94

95

108

133

126

138

146

155

155

157

TST

131

125

*117

112

106

100

96

94

90

90

86

86

72.

3,406

114

6,760

July

73

74

75

74

77

77

72

7172"

74

74

72

74

73

72

73

*73

75

80

77

82

81

80

81

87

85

83

81

86

9_5

2,410

77.7

4,780

Aug.

90

94

96

96

91

91

94

97

95

97

99

99

95

97

95

90

91

94

94

*87

85

82

83

86

86

94

102

99

104

114

117.

2,934

94.6

5,820

Sept.

120

123

121

114

112

103

104

100 im

114

109

115

114

108

103

106

114

126

125

125

120

126

125

121

 129

133

129

126

131

133

3,537

118

7,020

Calendar year 1956: Max 166 Min 73 Mean 105 Ac-ft 75,910

Water year 1956-57: Max 226 Min 71 Mean 106 Ac-ft 76,580

* Discharge measure this day.
MUD LAKE-LOST RIVER BASINS 85

Camas Creek at Camas, Idaho

Location. Lat 44°00', long 112°13', in E|SE£ sec, 21, T. 8 N., R. 36 E., on left bank 

ISO ft upstream from Oregon Short Line Railroad bridge at Camas and half a mile 

upstream from Beaver Creek.

Drainage area. 320 sq mi, approximately. 

Records available.--April 1925 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 4,780 ft (by barometer). Prior to 

Aug. 21, 1925, staff gage at site 0.1 mile downstream at different datum. Aug. 21, 

1925, to Mar. 25, 1927, staff gage and Mar. 26, 1927, to Sept, 14, 1938, water-stage 

recorder, at site 250 ft upstream at datum 2.01 ft higher.

Average discharge. 31 years (1926-57), 28.4'cfs (20,560 acre-ft per year).

Extremes. Maximum discharge during year, 778 cfs May 21 (gage height, 6.00 ft, from 

floodmarks); no flow for long periods.

1925-57: Maximum discharge, 1,220 cfs May 2 or 3, 1952 (gage height, 6.53 ft), from 

rating curve extended above 510 cfs by logarithmic plotting; no flow during periods in 

many years.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions above and below station for irrigation and stock water.

Cooperation. Water-stage recorder inspected by employees of Water District No. 66. 

Revisions (water years).--WSP 813: 1935. WSP 1123: 1947.

Rating table, water year 1956-57, except period of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used July 5-25)

1.4

1.5

1.6

1.7

1.8

.4 

1.0

2.0 

3.6

1.9

2.1 

2.3 

2.6

3.0 

4.0 

5.0 

6.0

230

460

778

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

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

1 4

2 3

2 1

9

1 6

8.3

0.27

16

Nov.

1.5

.1

0

0

1.8

.8

.8

.4

.4

.5

* .5

.6

.1

0

0

0

.5

.7

0

0

0

0

) 

10.3

0.34

20

Dec.

(»)

> 0.2

6.2

0.20

12

Jan,

* 0.3

(*)

9.3

0.30

18

Feb.

> 0.3

1

3

3

3

3

2.5

2

1

1

1

2

4

7

10

11

10

68.1

2.43

135

Mar.

6

4

*3

3

2.5

3

3

3.5

5

7

9

10

10

9

7

7

7

7

7

7

6.5

5.5

5

5

5

9

10

11

 12

11

10

210.0

6.77

417

Apr,

9

8

6

7

7.5

8

7

5

4.7

*571

6.2

6.5

9.6

23

*24

28

43

38

52

58

68

64

70

93

100

93

.93

104

127

196

1,364.1

45.5

2,710

May

*230

*249

293

349

505

433

*330

303

294

353

417

337

614

647

568

568

417

390

471

627

756

*632

488

368

284

240

210

202

210

230

230

12,245

395

24,290

June

226

234

230

214

204

192

181

*163

144

133

121

111

90

83

78

74

76

66

51

44

40

47

56

46

38

27

23

21

18

17.

3,048

102

6,050

July

18

19

17

16

16

15

16

18

14

*14

16

16

19

19

16

16

14

12

12

10

10

11

9.3

8.9

7.4

7.1

8.0

6.8

4.2

1.9

Cl

387.6

12.5

769

Aug.

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

.8

1.5

1.4

3.7

0.12

7.3

Sept.

3.6

5.1

5.6

5.4

4.0

2.9

2.4

2.0

1.9

1.9

2.1

 2.0

2.0

2.4

2.6

3.2

1.1

0

0

0

0

0

0

0

0

0

0

0

0

0

50.2

1.67

100

Calendar year 1956: Max 437 Mln 0 Mean 32.2 Ac-ft 23,400

Water year 1956-57: Max 756 Mln 0 Mean 47.7 Ac-ft 34,540

* Discharge measurement made on this day Note.--Stage-discharge p- 1 - 4-' -« _-j i 

Nov. 23-30, Dec. 4 to Feb. 

weather records, 4 discharge meaoui-cmenu 

Creek at Dubols and other nearby streams

made on this day.

relation affected by Ice Nov. 23 to about Apr. 5. No gage-height record 

. 26, Mar. 3 to Apr. 1, Apr. 3, 5-8; discharge estimated on basis of 

rge measurements, two estimates of flow by observer, and records for Beav

nearb streams.
86 MUD LAKE-LOST RIVER BASINS

Beaver Creek at Dubois, Idaho

Location. Lat 44°11' , long 112°14>, In NWi sec. 21, T. 10 N., R. 36 E., on left bank 

half a mile north of Dubois.

Drainage area. 220 sq ml, approximately.

Records available . April 1921 to September 1957 (no winter records 1925-28, 1930).

Gage. Water-stage recorder. Altitude of gage Is 5,150 ft (by barometer). Prior to 

May 8, 1927, staff gage at site 175 ft downstream at datum 2.08 ft lower.

Average discharge. 30 years (1921-24, 1928-29, 1931-57), 16.8 cfs (12,160 acre-ft per 

year).

Extremes. Maximum discharge during year, 420 cfs May 20 (gage height, 3.26 ft)j no flow 

most of year.

1921-57: Maximum discharge, 858 cfs Apr. 7, 1930 (gage height, 4.77 ft); no flow 

for long periods.

Remarks. Records good except those for periods of fragmentary or no gage-height record, 

which are poor.

Cooperation. Water-stage recorder inspected and six discharge measurements furnished by 

Water District No. 66.

Rating table, water year 1956-57 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used May 20-25, June 1)

.6 

1.4 

3.0

1.0 

1.5 

2.0 

2.5 

3.5

145

204

269

417

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

(*)

0

0

0

Dec.

(*)

0

0

0

Jan.

(*)

0

0

0

Feb.

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

f4.8 fll

-

15.8

0.56

31

Calendar year 1956: Max 160 Min 0

Mar.

*f7.6

f2.2

* .4

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

2.2

12.4

0.40

25

Apr.

1.6

0

0

0

0

1.5

a2.0

a3.0

a9.0

*15

13

6.3

4.5

*8.8

*13

*16

22

9.9

9.2

8.1

14

24

*40

44

33

29

18

21

 45

80

490.9

16.4

974

May

*109

*156

146

113

112

80

*62

52

55

80

117

173

208

161

196

167

138

174

212

385

290

229

*18S

161

131

116

113

112

115

117

116

4,584

148

9,090

June

131 109"

102

90

79

79

*69

59

56

55

*54

46

47

39

50

63

72

50

34

29

83

74

48

34

26

21

20

17

8.4

2_i8_

1,647.2

54.9

3,270

July

~7T 1.0

.6

a. 5

a. 4

a. 2

a.l

0

 0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3.5

0.11

6.9

Aug.

(*)

0

0

0

Sept.

(*

0

0

0

Mean 9.50 Ac-ft 6,900

Water year 1956-57: Max 385 Min 0 Mean 18.5 Ac-ft 13,400

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

streams .

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
MUD LAKE-LOST RIVER BASINS 87

Beaver Creek at Camas, Idaho

Location. La t 44°01' , long 112 "14", in NE^ sec. 21, T. 8 N. , R. 36 E., on right bank a 

quarter of a mile northwest of Oregon Short Line Railroad station at Camas and threeeights of a mile upstream from mouth.

Drainage area. 510 sq mi, approximately. 

Records available . April 1921 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 4,790 ft (by barometer). Prior to 

D"ec. 22, 1949, staff gages at nearby sites at present datum.

Average discharge. 36 years, 3.97 cfs (2,870 acre-ft per year).

Extremes . Maximum discharge during year, 132 efs May 21 (gage height, 2.98 ft); no flow 

most of year.

1921-57: Maximum discharge, 186 cfs Apr. 28, 1952 (gage height, 3.48 ft); no flow 

for long periods in each year; no flow for entire water years 1929, 1931-37, 1940.

Remarks . Records excellent. Flow affected by irrigation diversions above Dubois, 

14 miles above station, and by heavy channel losses below Dubois.

Cooperation. Six discharge measurements and occasional inspections of recorder furnished 

by Water District No. 66.

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

0.8 

.9

1.0

1.1

1.2

1.3

0

.3 

1.2 

2.4 

4.0 

6.2

1.4 

1.6 

1.8 

2.0 

2.5 

3.0

9.5

18

28

42

85

134

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

(*)

0

0

0

Dec.

(*)

0

0

0

Jan.

(*)

0

0

0

Feb.

_

0

0

0

Mar.

( )

(*)

0

0

0

Apr.

(*)

(*)

0

0

0

May

0

T.8

*56

*42

42

24

*15

*6.2

*3.6

9.5

34

62

90

*90

90

94

75

85

100

114

128

124

*113

101

87

75

70

63

62

60 

59

1,976.1

63.7

3,920

June

*63

60

52

41

*27

21

12

*3.6

1.6

.9

.2

0

TJ

1.2

.6

4.2

16

10

.3

0

5.6

38

19

6.2

.2

0

0

0

0

0

383.6

12.8

761

July

(*)

0

0

0

Aug.

(*)

0

0

0

Sept.

(*

(*

0

0

0

Calendar year 1956: Max 124 Mln 0 Mean 3.95 Ac-ft 2,870

Water year 1956-57: Max 128 Mln 0 Mean 6.46 Ac-ft 4,680

Discharge measurement or observation of no flow made on this day.
88 MID LAKE-LOST RIVER BASINS

Mud Lake near Terreton, Idaho

Location. Lat 43°54', long 112°21, in KE^SE^ sec. 32, T. 7 N., R. 35 E., 670 ft north of 

mouth of Camas Creek, 4.4 miles northeast of First Owsley pumphouse, and 5| miles 

northeast of Terreton.

Drainage area. 1,050 sq mi, approximately, not including Medicine Lodge Creek. 

Records available. April 1921 to September 1957.

Gage. Water-stage recorder. Datum of gage is 4,774.99 ft above mean sea level, unadjusted. Prior to Oct. 31, 1931, staff gages at or near pumphouse (now used as supplementary gage) at same datum. Oct. 31, 1931, to Sept. 30, 1954, water-stage recorder at 

site 2.7 miles southwest and 2 miles north of First Owsley pumphouse at same datum.

Extremes. Maximum contents during year, 29,800 acre-ft May 29, 30; maximum gage height, 

6.78 ft May 28 (affected by wind); minimum contents, 3,450 acre-ft Oct. 19; minimum 

gage height, -0.09 ft Oct. 9 (affected by wind).

1921-57: Maximum contents observed, 61,660 acre-ft May 5, 1923 (gage height, 

9.20 ft); practically no contents Oct. 1 to Nov. 15, 1937, due to bypassing Camas Creek 

.(see Remarks).

Remarks. Mud Lake is a perched body of water confined by earth dikes and fed by ground 

water and surface tributaries augmented by well flows and surface inflow from North 

Lake. For complete description of Mud Lake region, see WSP 818. Water for irrigation 

is diverted from lake by pumping. During low-lake stages, inflow from Camas Creek may 

be bypassed through Camas Creek diversion canal directly to lake outlet channel leading 

to First Owsley pumping plant. Bypass was not used during 1957. Other irrigation 

diversions are made by various means from adjacent lakes and wells and Camas Creek 

above lake. Area of Mud Lake is varied from time to time by changes in dikes. Figures 

given herein represent contents above gage height -4.0 ft. Capacity table prepared 

from surveys made by Geological Survey and adjusted for changes in dikes. High winds 

are frequent, and stage at recorder during wind does not usually represent the mean for 

the lake.

Cooperation. Water-stage recorder inspected by employees of Water District No. 66 and 

supplemental staff-gage readings furnished by Owsley Canal Co.

Revisions. WSP 1247: Drainage area.

Capacity table, water year 1956-57 (gage height, in feet, 

and usable contents, in acre-feet)

2.0 

3.0

3,410

5,460

8,150

11,600

4.0 

5.0 

6.0 

8.0

15,800

20,500

25,700

37,900

Contents, In acre-feet, at 12 p.m., water year October 1956 to September 1957

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

(t)

(*)

Oct.

3,820 

3,800

f3,780

5,780

5,740

3,720

3,700

f3,680

3,680

3,670

3,610

3,610

f3,590

3,570

3,540

3,500

3,480

f5,480

5,450 

3,480

3,480

3,520

3,570

3,630

3,720

3,840

f3,970

3,990

4,070

f4.090

f4,090

0.36

+230

Nov.

4.110 

4,110

4,150

4,270

4,350

4,390

4,430

4,520

4,560

4,600

4,620

4,680

4,770

4,810

4,880

4,920

5,010

5,050

S'.IOO 

5,140

5,250

5,500

5,570

5,440

5,550

5,600

5,680

5,770

5,850

5,950

1.20

* 1,860

Dec.

6,050 

6, ISO

6,250

6,580

6,48O

6,640

6,740

6,850

6,960

7,070

7,200

7,520

7,570

7,490

7,610

7,700

7,810

7,940

8,060 

8,180

8,540

8,470

8,600

8,730

8,860

8,950

9,080

9,180

9,320

9,450 

9,620

2.45

+3,670

Jan.

9,750 

9,900

10,000

10,100

10,500

10,400

10,600

10,800

10,900

11,100

11,200

11,500

11,500

11,600

11,700

11,800

11,900

12,100

12,200 

12,500

g!2,700

g!2,900

g!3,000

g!3,200

g!3,300

g!3,300

g!3,400

g!3,500

g!5,600

15,700 

15 f 900

5.56

+4,280

Feb.

14,000 

14.2OO

14,200

g!4,400

g!4,600

g!4,800

g!4,900

glS.OOO

g!5,100

g!5,200

g!5,400

glS.500

g!5,600

g!5,700

15,700

15,800

15,900

16,000

16,100 

16,200

16,500

16,400

16,700

16,800

16,800

16,900

17,000.

l7,6o"6

_

4.27

+5,100

Mar.

17,100 

17,200

17,200

17,400

17,400

17,500

17,500

17,600

f!7,700

17,800

f!7,900

ris.ooo

18,000

18,100

18,200

18,300

18,400

18,500

18,600 

18,700

18,800

18,900

18,900

19,000

19,200

19,300

19,500

19,500

19,700

19^900

4.88

+2 , 900

Apr.

20,000 

20,OOO

20,000

20,100

f20,300

20,300

20,400

20,500

20,700

20,700

20,700

20,800

f 20, 900

f 20, 900

f 2 1 , 000

21,000

f21,100

21,200

21,300 

21,500

21,700

21,800

21,800

21,900

21,900

21,900

21,900

22,000

22.100

22,100

5.32

+2,200

May

22,500 

22,400

22,6OO

22,900

f 23, 100

25,500

25,600

25,900

25,900

24,000

f24,000

24,400

24,600

24,600

24,800

25,000

25,200

25,700

26,400 

26,700

27,000

27,500

28,000

28,400

28,700

29,200

29,400

29,700

29,800

29J600

6.67

+7,500

June

29,500 

29.4OO

29,200

29,100

28,700

28,100

27,700

27,500

26,700

26,100

25,500

24,500

23,900

23,100

22,500

22,000

21,400

20,800

20,200 

19,800

19,300

18,700

18,200

17,700

17,300

16,900

16,400

16,000

15,700

15.500

5.92

-14,100

July

15,200 

15,100

14,900

14,700

14,500

14,300

14,000

13,700

13,500

12,900

12,400

11,900

fll,400

10,900

10,400

9,900

9,350

8,890

8,400 

7,940

7,480

7,070

6,660

6,300

5,950

5,600

5,500

5,050

4,810

4,640

4,430

0.53

-11,070

Aug.

4,250 

4,090

5,950

3,820

f3,720

f3,700

3,680

3,670

3,670

3,650

3,630

5,630

5,590

5,590

5,550

3,610

3,680

3,740

3,840 

3,880

f3,910

3,910

4,010

f4,090

f4,150

4,230

f4,270

f4,370

f4,480

4,600

4,730

0.67

+300

Sept.

4,850 

4,940

5,080

5,160

5,280

5,440

f5,630

5,750

5,850

6,020

6,170

6,250

6,400

6,530

6,580

6,660

6,690

6,790

6,820 

6,790

6,710

6,690

f6,710

6,690

6,640

6,510

6,460

6,380

6,300

6,200

1.30

+1,470

Calendar year 1956. ................... * -1,380 

Water year 1956-57. ................... * +2,340

T Sage height, in feet, at end of month. 

* Change in contents, in acre-feet.

f Recorder record affected by wind; contents computed from gage height estimated on basis of 

adjacent records not affected by wind.

g Contents computed from graph based on once-daily staff-gage readings.
MUD LAKE-LOST RIVER BASINS 89

Medicine Lodge Creek at Ellis Ranch, near Argora, Idaho

Location. Lat 44°17', long 112°30', in sec. 7, T. 11 N., R. 34 E., on left bank 4 miles 

upstream from Middle Creek, 6| miles southeast of Argora, and 17 miles northwest of 

Dubo is.

Drainage area.--165 sq mi.

Records available. October 1940 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 5,710 ft (from topographic map of dam 

sites). Prior to Nov. 16, 1940, staff gage at site 0.2 mile upstream at different 

datum. Nov. 16, 1940, to May 30, 1950, at site 50 ft downstream at present datum.

Average discharge. 16 years (1941-57), 42.1 cfs (30,480 acre-ft per year).

Extremes. Maximum discharge during year. 98 cfs May 20 (gage height, 2.93 ft); minimum, 

O~cfs Mar. 24 (gage height, 1.48 ft).

1940-57; Maximum discharge, 229 cfs June 9, 1944 (gage height, 4.23 ft), from 

rating curve extended above 120 cfs by logarithmic plotting; minimum, 4.0 cfs Feb. 15, 

1953, Nov. 28, 1954 (gage height, 1.24 ft).

Remarks. Records good. Several diversions above and below station for irrigation.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

25

24

24

24

24

24

24

24

24

24

25

26

26

26

26

26

26

26

26

26

26

26

27

28

28

28

2"8 29

28

28 

29

805

26.0

1,600

Nov.

28

26

22

28

29

29

30

2S

26

25

*26

26

26

20

18

22

24

22

16

T7

16

16

17

17

18

18

18

19

20

22

670

22.3

1,330

Dec.

23

24

27

26

31

29

19

18

18

*20

21

22

24

28

30

33

29

34

f?

32

31

20

24

23

23

24

20

20

20

20

20

765

24.7

1,520

Calendar year 1956: Max 101

Jan.

22

22

22

21

20

20

22

22

24

24

24

26

26

30

30

19

20

22

23

24

25

26

 28

28

28

28

26

27

26

27 

28

760

24.5

1,510

Feb.

28

28

30

30

31

30

30

32

3T

28

30

29

29

28

28

272"8

28

28

28

28

28

27

28

30

28

28

28

-

806

28.8

1,600

Mar.

27

27

*28

27

28

28

28

28

30

32.

30

26

23

22

25

26

26

24

22

18

14

11

11

1011

9.7

9^3

9.3

9.3

11

11

641.6

20.7

1,270

Apr.

11

9.3

11

12

15

13

11

11

13

 14

13

13

12

12

11

10

10

11

13

13

12

11

11

10

10

11

10

10

10

12

345.3

11.5

685

May

16

»32

41

43

40

42

53

54

59

64

62

74

80

73

79

67

61

68

88

93

78

74

70

68

60

58

56

58

63

65 

65

1,904

61.4

3,780

June

68

66

69

68

72

83

79

 79

81

82

79

74

73

74

78

76

70

67

65

74

83

79

73

70

67

68

67

63

62

61

2,170

72.3

4,300

July

60

61

64

61

62

66

65

65

*64

64

68

68

68

68

67

66

64

64

65

64

65

64

64

65

65

66

66

65

65

64 

63

2,006

64.7

3,980

Aug.

63

63

62

61

60

*60

60

60

59

59

58

57

56

55

55

55

55

54

54

53

53

60

59

55

54

55

55

54

56

61 

60

1,781

57.5

3,530

Sept.

58

57

55

54

53

52

51

50

50

50

50

50

50

49

*48

48

48

48

48

48

48

47

46

46

45

45

44

43

42

42

1,465

48.8

2,910

Mln 14 Mean 324 Ac-ft 23,510

Water year 1956-57: Max 93 Mln 9.3 Mean 38.7 Ac-ft 28,020

Discharge measurement made on this day.

503667 O - 59 - 7
90 MUD LAKE-LOST RIVER BASINS

Birch Creek near Reno, Idaho

Location. Lat 44°12 I , long 112 057' , in sec. 13, T. 10 N., R. 29 E., on left bank 200 ft 

west of State Highway 28, 2.6 miles south of the Lemhi-Clark County line, 5 miles 

southeast of former Reno Post Office, and 35 miles west of Dubois.

Drainage area. 320 sq mi, approximately.

Records available.--September 1910 to June 1912 (published as "near Kaufman"), April 1921 

to January 1923, October 1950 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 6,240 ft (by barometer). Prior to 

Oct. 1, 1950, staff gage at site half a mile downstream at different datum.

Average discharge.~9 years (1910-11, 1921-22, 1950-57), 79.0 cfs (57,190 acre-ft per 

year).

Extremes. Maximum discharge during year, 89 cfs May 14 (gage height, 1.74 ft); maximum 

gage height, 2.76 ft Jan. 19 (backwater from ice); minimum discharge, 67 cfs Jan. 26 

(gage height, 1.53 ft).

1910-12, 1921-23, 1950-57: Maximum discharge, 111 cfs Mar. 24, 1956 (gage height, 

1.96 ft); maximum gage height observed, that of Jan. 19, 1957; minimum discharge 

recorded, 61 cfs Jan. 29, 1951; minimum gage height, 1.47 ft Jan. 30, 1956.

Remarks. Records good except those for periods of ice effect or no gage-height-record, 

which are fair. Small ranch diversions above station.

Revisions (water years). WSP 1447: 1911-12.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.5

1.6

1.7

Discharge, in cubic feet per second, water year October 1956 to September- 1957

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

Total

Mean

Ac-ft

Oct.

75

75

75

75

75

74

74

75

76

75

76

76

76

76

76

76

76

76

76

76

76

76

76

76

76

76

77

76

76

76

76

2,346

75.7

4,650

Nov.

77

77

77

77

77

78 rr

77

77

77

77

*77

77

b77

b77

77

77

77

b76

b76

76

76

76

76

77

77

77

77

78

78

2,307

76.9

4,580

Dec.

77

77

77

78

78

77

b76

b76

b75

77

*75

73

74

74

74

74

b74

74

74

74

74

b74

b73

73

74

74

b74

75

76

b76

2,327

75.1

4,620

Jan.

b76

76

b75

b75

b75

b75

75

75

b74

74

b74

74

74

75

74

b73

b73

b74

b74

74

74

*b74

b72

b72

b71

b70

bTO

b70

b70

b71

b72

2,275

73.4

4,510

Feb.

73

74

74

74

74

74

75

76

75

75

75

75

76

77

76

77

77

77

77

76

75

76

78

78

78

78

79

79

-

2,128

76.0

4,220

Mar.

79

79

79

79

79

79

*79

79

79

77

76

76

76

b75

75

75

75

74

75

75

75

b74

74

75

75

76

76

76

76

76

76

2,369

76.4

4,700

Apr.

76

76

75

75

75

76

76

75

*76

77

77

77

77

77

76

77

77

78

78

79

79

79

78

77

77

76

76

76

76

76

2,300

76.7

4,560

May

76

76

77

77

77

77

76

76

77

78

79

80

80

85

8?

80

79

79

82

79

78

78

77

76

76

75

75

75

75

75

76

2,408

77.7

4,780

June

76

75

75

75

75

*75

74

74

74

75

75

74

73

73

74

75

75

74

73

II

76

75

73

72

72

72

72

72

72

72

2,219

74.0

4,400

July

72

72

72

71

71

71

71

71

*72

73

74

74

73

73

73

73

72

72

72

72

72

72

72

72

72

72

72

72

72

71

71

2,234

72.1

4,430

Aug.

71

7T

71

71

*71

72

71

71

71

71

71

71

71

71

73

73

73

73

73

73

74

74

74

74

74

74

74

74

76

77

75

2,253

72.7

4,470

Sept.

75

75

77

77

77

77

77

77

77

77

77

»77

77

77

77

77

77

77

76

76

76

76

77

77

77

77

77

77

~78 !ja

to

2,304

76.8

4,570

Calendar year 1956: Max 85 Min 69 Mean 76.2 Ac-ft 55,280

Water- year 1956-57: Max 85 Min 70 Mean 75.3 Ae-ft 54,490

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice. 

Note. No gage-height record Dec. 19-21, 24-26, Jan. 20, 21, 

on basis of weather records and records for nearby streams.

Feb. 1 to Mar. 6; discharge estimated
MUD LAKE-LOST RIVER BASINS 91

Little Lost River near Howe, Idaho

Location. Lat 43°53', long 113 0 06' , in sec. 3, T. 6 N., R. 28 E., on left bank a quarter 

ora mile upstream from diversion dam of Blaine County Investment Co., 6 miles northwest of Berenice, and 7 miles northwest of Howe.

Drainage area. 685 sq mi.

Records available. April 1921 to September 1957 (no winter records prior to 1941). 

Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 5,020 ft (by barometer). Prior to 

Sept. 2, 1938, staff gage at site 120 ft downstream at datum 1.39 ft higher.

Average discharge.--17 years (1940-57), 69.1 cfs (50,030 acre-ft per year).

Extremes.--Maximum discharge during year, 230 cfs June 11 (gage height, 4.15 ft); maximum 

gageheight recorded, 6.63 ft Jan. 23 (ice Jam); minimum daily discharge, 15 cfs 

Jan. 26-29.

1921-57: Maximum discharge, about 450 cfs Aug. 11, 1936 (gage height, 3.1 ft, 

datum then in use, from floodmark), from rating curve extended above 100 cfs; maximum 

gage height observed, that of Jan. 23, 1957; minimum discharge observed, 4.1 cfs 

Dec. 12, 1940.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions above and below station for irrigation of about 

11,900 acres.

Cooperation.--Water-stage recorder inspected by employees of Water District No. 9.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.3 

2.5 

2.8 

3.2

3.6 

4.0 

4.4

148

206

272

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

*58

58

57

55

56

57

57

56

58

60

68

70

65

59

58

59

58

57

58

55

51

51

49

46

44

45

48

46

41

43

57

1,700

54.8

3,370

Nov.

54

47

43

38

36

38

36

33

30

27

26

*25

26

23

21

25

28

27

25

23

21

24

27

27

26

26

26

28

28

28

892

29.7

1,770

Dec.

28

28

28

28

29

29

25

21

21

24

28

*32

32

31

27

28

27

29

28

28

30

27

26

25

26

27

28

28

28

28

28

852

27.5

1,690

Calendar year 1956: Max 243

Jan.

27

26

25

23

21

20

19

19

19

19

20

22

23

24

20

17

17

18

20

21

18

*17

17

16

16

15

15

15

15

18

21

603

19.5

1,200

Feb.

23

27

26

25

24

23

24

27

25

24

25

27

32

37

37

36

35

34

33

33

34

36

38

39

40

40

39

39

-

882

31.5

1,750

Mar.

39

39

38

38

38

38

*39

38

37

35

33

36

36

36

37

40

43

41

42

46

49

44

43

48

49

50

50

49

51

50

50

1,302

42.0

2,580

Apr.

49

48

50

50

55

66

64

*62

60

62

64

63

62

62

63

64

63

64

69

68

68

65

64

66

66

65

60

58

59

*62

1,841

61.4

3,650

May

66

72

82

90

90

101

114

125

130

133

141

149

156

159

165

166

165

166

175

180

185

185

182

180

175

170

170

178

184

iti

4,613

149

9,150

June

194

198

203

203

206

*214

217

216

224

227

225

217

217

211

204

202

190

170

161

170

192

180

170

165

166

161

152

147

149

146

5,699

190

11,300

July

154

154

129

120

116

116

116

*116

112

107

114

117

113

106

100

92

89

86

88

84

91

90

86

85

81

83

85

82

81

81

83

3,157

102

6,260

Aug.

83

80

77

76

*74

74

81

78

76

75

76

75

74

74

75

76

75

72

71

71

72

77

80

75

71

70

72

72

75

84

94

2,355

76.0

4,670

Sept.

85

8T

77

76

73

71

TO

68

69

70

*62

61

61

61

61

60

60

61

68

69

66

68

71

69

68

68

64

63

68

66

2,035

67.8

4,040

Mln 20 Mean 65.7 Ac-ft 47,660

Water year 1956-57: Max 227 Mln 15 Mean 71.0 Ac-ft 51,430

* Discharge measurement made on bhia day.

Note.--Stage-discharge relation affected by ice Nov. 14-16, 19-27, 30, Dec. 2-4, 6-12, 15, 17, 19, 

20, Dec. 22 to about Feb. 20. No gage-height record Nov. 2, 5-11, Dec. 30 to Jan. 21, Jan. 23 to 

Feb. 25, Feb. 27 to Mar. 6j discharge estimated on basis of weather records and records for Medicine 

Lodge Creek and other nearby streams.
92 MUD LAKE-LOST RIVER BASINS

Blaine County Investment Co.'s canal near Howe, Idaho

. Location. Lat 43°53', long 113°05', in NWiNWj sec. 11, T. 6 M., R. 28 E., on left end of 

weir, 900 ft downstream from headgates and 7 miles northwest of Howe.

Records available. April 1924 to September 1957 (prior to 1939, irrigation seasons only).

Gage.--Staff gage and Cippoletti weir; gage read once daily. Prior to June 25, 1927, 

staff gage at site 700 ft upstream at different datum. June 26, 1927, to May 6, 1945, 

staff gage at site 180 ft upstream at present datum.

Extremes. 1924-57: Maximum daily discharge, 99 cfs June 13, 1957; no flow during long 

periods each year.

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

Canal diverts from Little Lost River in sec. 2, T. 6 N., R. 28 E., for irrigation of

lands in project of Blaine County Investment Co.

Cooperation.--Sage readings furnished by Water District No. 9.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

*0

Tj

0

0

0

6.1

9.8

9.8

10

11

11

11

11

10

9.8

9.8

9.8

9.8

9.8

9.8

2.4

0

0

0

0

7.3

9.8

9.8

9.8

a9 . 8

9.8

207.2

6.68

411

Nov.

£^i TS

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

4.1

0.14

8.1

Dec.

(*)

0

0

0

Calendar year 1956: Max 90

Jan.

(*)

0

0

0

Feb.

> aO

} :

0.4

0.01

0.8

Mar.

aO.l

* .1

> a.l

3.1

0.10

6.1

Apr.

ao.l

^71

8.0

16

13

13

16

16

«15

16

17

17

17

17

JL8

15

9.8

8.9

8.9

8.9

8.9

8.9

8.9

8.1

7.6

6.8

6.0

5.1

4.4

«4.5

319.9

10.7

635

May

4.7

11 '

15

17

20

25

29

34

39

43

49

55

59

67

73

74

75

77

80

84

85

86

86

81

76

73

81

87

90

90

1,772.4

57 .2

3,520

June

91

92

92

94

96

»97

97

98

97

97

97

98

99

M

98

97

94

78

63

60

69

74

70

66

65

66

63

57

54

53

2,470

82.3

4,900

July

52

53

49

37

34

27

23

*22

22

19

16

19

22

22

19

13

11

10

9.2

8.9

9.6

9.8

9.6

9.6

8.9

7.6

*7.2 772"

7.2

7.2

7.2

579.2

18.7

1,150

Aug.

7.2

7.2

7.2

7.2

*6.4

5.7

5.7

5.9

5.9

7.6

8.8

8.9

879

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

4.1

0

0

0

0

0

0

0

0

0

167.9

5.42

333

Sept.

3.3

7.9

779

7.9

7.9

7.9

7.9

7.9

7.9

 7.9

7.6

7.6

7.6

7.6

7.6

1.6

0

0

0

0

0

0

0

0

0

6 3

7 6

7 6

7 6

7 6

150.7

5.02

299

Mln 0 Mean 12.7 Ac-ft 9,210

Water year 1956-57: Max 99 Mln 0 Mean 15.5 Ac-ft 11,260

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge interpolated or estimated on basis of 1 estimate of low flow, 

observer's notes, and records for Little Lost River near Howe.
MUD LAKE-LOST RIVER BASINS 93

Big Lost River at Wild Horse, near Chilly, Idaho

Location. La t 43°56', long 114 "07', in sec. 17, T. 7 N., R. 20 E., on right bank a

quarter of a mile upstream from East Fork Big Lost River, 2 miles downstream from Wild 

Horse dam site, and 16 miles southwest of Chilly.

Drainage area. 114 sq mi.

Records available. March 1944 to September 1957.

Sage. Water-stage recorder. Altitude of gage is 6,820 ft (from topographic map).

Average discharge. 13 years, 103 cfs (74,570 acre-ft per year).

Extremes. Maximum discharge during year, 1,100 cfs June 5 (gage height, 5.61 ft); minimum, 7.1 cfs Mar. 2 (gage height, 1.08 ft).

1944-57: Maximum discharge, 1,270 cfs May 24, 1956 (gage height, 6.18 ft); minimum, 

that of Mar. 2, 1957.

Remarks. Records excellent.

Rating table, water year 1956-57 (gage height, In feet, and 

discharge. In cubic feet per second)

1.3 

1.5 

2.0 

2.5 

3.0

14

26

63

119

210

3.5 

4.0 

4.5 

5.4

350

510

690

1,020

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

54

34

34

34

35

*34

32

33

35

37

4342"

39

37

36

35

35

35

36

35

34

34

34

34

32

33

36

27

29

32 

32

1,072

34.6

0.304

O.35

2,130

Nov.

27

25

27

31

32

34 *JZ

32

34

34

34

33

33

28

2A

31

32

27

25

24

27

28

28

26

26

25

25

24

25

24

859

28.6

0.251

0.28

1.700

Dec.

24

24

26

2726"

25

20

2T

*23

24

26

27

27

25

23

26

22

25

22

23

23

21

23

24

22

21

22

23

23

22

24

734

23.7

O.208

0.24

1,460

Jan.

21

22

19

20

21

20

20

21

19

19

21

20

21

21

21

18

19

20

20

21

18

20

21

19

20

19

*20

21

19

20 

20

621

20.0

0.175

0.20

1,230

Feb.

20

19

19

19

19

18

19

19

19

19

20

20

21

IT

20

19

19

18

19

19

19

19

19

19

19

19

18

18

-

536

19.1

0.16B

0.17

1,060

Mar.

18

17

20

T9

19

19

19

18

18

18

18

19

*18

17

19

18

18

17

18

19

19

18

18

18

19

18

18

18

18

18

19

567

IB. 3

0.161

0.18

1,120

Apr.

19

T9

19

19

21

22

21

21

22

»24

24

23

24

26

27

27

27

27

26

26

27

28

31

33

31

3O

31

36

47

64

822

27.4

0.240

0.27

1,630

May

90

147

161

136

128

176

268

*288

263

271

260

271

328

337

344

340

340

376

424

376

334

3OO

266

244

244

294

366

420

488

545 

552

9,377

302

2.65

3.06

18,600

June

646

756

909

1,000

* 1.020

992

877

778

697

576

481

468

449

398

353

318

280

280

309

353

34O

321

324

369

376

372

376

404

401

414

15,637

521

4.57

5.10

31,020

July

420

355

344

306

288

297

277

255

250

250

257

244

227

222

203

182

*172

159

155

155

144

134

126

119

115

111

1O9

105

103

99 

93

6,306

203

1.78

2.06

12,510

Aug.

88

83

80

77

77

76

73

69

68

66

64

62

60

57

57

55

53

52

*51

50

49

55

54

51

49

47

47

47

51

61 

63

1,892

61.0

0.535

0.62

3,750

Sept.

59

53

49

47

45

44

42

41

41

41

41

40

39

39

39

39

39

39

41

41

41

39

38

 36

36

35

34

34

33

IS.

1,217

40.6

O.356

0.40

2,410

Calendar year 1956: Max 1,220 Mln 17 Mean 138 Cfsm 1.21 In. 16.46 Ac-ft 100,100

Water year 1956-57: Max 1,020 Min 17 Mean 109 Cfsm 0.956 In. 12.93 Ac-ft 78,620

Peak discharge (base, 300 cfs). May 19 (3 a.m.) 443 cfs (3.79 ft); June 5 (4:30 a.m.) 1.10O cfs 

(5.61 ft); July 1 (5 a.m.) 452 cfs (5.82 ft).________________________________________ 

* Discharge measurement made on this day.
94 MUD LAKE-LOST RIVER BASINS

Big Lost River at Howell Ranch, near Chilly, Idaho

Location. Lat 44°00', long 114°02', in sec. 30, T. 8 N. , R. 21 E. , on left bank at

Howell Ranch, l£ miles downstream from Burnt Creek, 6 miles downstream from East Fork, 

9 miles southwest of Chilly, and 21 miles northwest of Mackay.

Drainage area. 450 sq mi.

Records available . April 1904 to November 1914, May 1920 to September 1957 (no winter 

records 1904, 1906-14, 1980-48).

Gage . Water-stage recorder. Datum of gage is 6,621.95 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Apr. 20, 1906, staff gage at site 

it miles downstream at different datum. Apr. 20, 1906, to June 6, 1912, staff gage 

at site 100 ft downstream at different datum. June 7, 1912, to Nov. 14, 1914, staff 

gage at present site at datum 2.07 ft lower. May 11 to June 16, 1920, staff gage at 

present site and datum.

Average discharge . 10 years (1904-5, 1948-57), 307 cfs (222,300 acre-ft per year).

Extremes . Maximum discharge during year, 3,570 cfs June 6 (gage height, 5.27 ft); minimum daily, 55 cfs Dec. 8, 9, Jan. 26-29.

1904-14, 1920-57: Maximum discharge, 3,960 cfs June 26, 1954 (gage height, 6.00 ft); 

minimum observed, 19 cfs (discharge measurement) Dec. 12, 1939.

Remarks . Records excellent except those for periods of ice effect or no gage-height record, which are poor. No regulation. Several small diversions for irrigation above 

station. Hammerly ditch (capacity, about 20 cfs) diverts a quarter of a mile downstream.

Cooperation. Water-stage recorder inspected by employees of Water District No. 27. 

Revisions. --WSP 1287: Drainage area.

Rating table, water year 1956-57, except period of Ice effect (gage 

height, In feet, and discharge. In cubic feet per second)

2.5

71 

109 

188 

343 

6O3 5.2

951

1,420

2,010

2,610

3,480

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

23

30

31

Total

Mean

Ac-ft

Oct.

104

103

103

101

104

*103

101

101

107

124

133

T33

124

115

111

1O9

106

106

107

104

104

103

104

104

101

106

115

90

95

100

100

3,321

107

6,590

Nov.

90

80

85

95

100

105

*106

100

10O

95

10O

95

95

90

80

95

100

85

80

75

85

9O

90

85

85

80

80

75

75

75

2,671

89.0

5.3OO

Dec.

75

75

80

85

815

75

60

55

*55

65

80

80

80

75

70

75

65

75

65

70

70

65

70

70

65

65

68

70

70

65

70

2,188

7O.6

4,340

Jan.

65

65

6O

65

65

65

65

70

GO

6O

70

65

70

70

7O

60

6O

60

60

70

65

60

60

60

60

55

*SS

55

55

60

65

1,945

62.7

3,860

Feb.

65

65

65

60

GO

6O

6O

60

60

6O

65

65

65

65

60

60

60

6O

65

65

70

70

70

7O

75

75

75

75

1,825

65.2

3,620

Calendar year 1956: Max 3,260 Mln 44

Mar.

7O

7O

75

75

75

75

70

70

7O

70

70

75

*7O

70

75

70

70

70

70

75

75

70

7O

70

75

70

70

70

7O

70

75

2,220

71.6

4,4OO

Apr.

75

75

75

75

75

80

75

75

80

*80

80

80

80

85

86

86

87

88

87

87

89

93

101

104

95

92

92

99

133

179

2,688

89.6

5,330

May

343" 230

399

3O9

296

404

597

*751

724

785

764

799

928

935

976

951

968

1,09O

1,460

1,190

985

850

764

710

691

806

1,040

1,310

1,560

1,700

1..830

27,145

876

53,840

June

2,060

2,410

2,890

3,220

*3,390

3,420

3,08(3

2,800

2,540

2,130

1,670

1,6OO

1,560

1,340

1,160

1,050

928

895

i,olo"

1,200

1,210

1,110

1,110

1,340

1,420

1,370

1,390

1,560

1,550

1,650

54,063

1,802

107.2OO

July

1,630

1745O

1,190

1,050

968

985

928

850

836

850

850

792

724

730

678

597

*557

506

512

518

480

443

418

404

389

371

371

348

343

339

313

21,420

691

42,490

Aug.

296

276

260

249

245

249

226

212

208

2O2

198

191

185

179

172

172

166

163

*157

152

146

154

163

154

146

141

138

138

149

176

205

5,868

189

11,640

Sept.

191

Tel

152

146

141

133

128

124

124

126

124

120

117

115

113

111

113

113

124

126

124

120

117

*113

111

1O7

1O6

104

ToT

104

3,720

124

7,380

Mean 409 Ac-l't 297,200

Water year 1956-57: Max 3,420 Mln 55 Mean 354 Ac-ft 256^000

Peak discharge (base, 900 cfs). --May 19 

(5.27 ft); June 3O (4 a.m.) 1,78O cfs

11 a 

3.81

.m.) 1 

ft).

,580 cfs (3.64 ft); June 6 ( 8 a.m.) 3,570 cfs

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Oct. 28 to about Mar. 31. No gage-height record 

Nov. 2-6, Nov. 14 to Dec. 8, Dec. 10 to Feb. 27, Mar. 1-12, Mar. 14 to Apr. 9, Apr. 11-14; discharge 

estimated on basis of weather records, 7 discharge measurements, and records for station at Wild 

Horse and Big Wood River at Halley.
MUD LAKE-LOST RIVER BASINS 95

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

Location.--Lat 43°58'20", long 113°43'50", in NE£ sec. 4, T. 7 N., R. 23 E., on right

bank above flow line of reservoir, 3 miles upstream from Mackay Dam and 7? miles northwest of Mackay.

Records available.--May 1919 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 6,061.80 ft above mean sea level, unadjusted. Prior to Sept. 22, 1934, at site 550 ft upstream at different datum (datum 

raised 1 ft Apr. 20, 1920). Staff gage on Mackay Reservoir is used as an auxiliary 

gage during periods of backwater from reservoir.

Average discharge . 38 years, 72.2 cfs (52,270 acre-ft per year).

Extremes. Maximum discharge during year, 1,220 cfs June 5; maximum gage height, 5.97 ft 

July 2 (backwater from Mackay Reservoir); no flow Jan. 1 to Mar. 25.

1919-57: Maximum discharge, 1,360 cfs June 7,8, 1952; maximum gage height, that 

of July 2, 1957; no flow for long periods in many years.

Remarks. Records good except those for periods of backwater from Mackay Reservoir and 

thost below 10 cfs, which are fair, and those for periods of ice effect or no gageheight record, which are poor. Diversions above station for irrigation. See page 99 

for sum of surface inflow to Mackay Reservoir. Zollinger ditch which bypasses station 

was reported not flowing Oct. 8, Nov. 9, Dec. 10, Jan. 26, Mar. 14, Apr. 9, May 7, 

June 4, July 19, Aug. 20, Sept. 24.

Cooperation. Water-stage recorder inspected by employees of Water District No. 27. 

Revisions (water years). WSP 1237: 1919-21.

Rating tables, water year 1956-57, except periods of Ice effect or backwater from 

Mackay Reservoir (gage height, in feet, and discharge, In cubic feet per second) 

(Shifting-control method used May 31 to June 2)

Oct. 1 to June 5 July 22 to Sept. 3O

2.5

2.6

2.7

2.8 

3.0 

3.3

3.6 

3.9

5.0 

5.4

70

124

240

390

750

1,350

3.5

3.6 

3.8 

4.1 

4.4 

4.7

14

37

91

177

345

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

8

8

8

8

8

8

8

*8

9

10

10

10

9

9

9

9

8

8

8

8

8

8

8

8

8

8

8

8

7 

o

]_

257

8.3

510

Nov.

a7

a6

a6

5

5

5

5

4

*4

4

4

4

4

4

3

3

3

3

3

3

2

2

2

2

2

2

2

2

2

2

105

3.5

208

Dec.

~2a2

a2

a2

a2

a2

al

al

bl

*1

a2

a2

a2

a2

1

al

al

al

al

al

al

al

bl

al

al

al

al

al

al

bl

al

41

1.3

81

Jan.

(*)

(*)

O

0

0

Feb.

-

0

0

10

Mar.

0

0

O

0

0

0

0

0

0

0

0

0

0

*o

o

0

0

0

0

0

0

0

o

0

o

al

al

al

al

al

al

6

0.2

12

Apr.

al

al

al

al

al

al

al

al*1

1

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

50

1.7

99

May

2

2

2

2

2

2

*1

T

2

60

109

151

196

252

280

305

305

336

468

511

432

354

a320

3280

a260

248

305

384

410

495

536

7,013

226

13,910

June

621

750

898

 1,110

1.210

1,200

1,120

977

951

863

764

616

488

440

400

370

360

3SO

360

390

410

420

430

430

460

480

490

500

540

540

18,948

63.2

37 , 580

July

550

550

530

500

42O

380

350

330

320

318

331

357

302

280

322

288

270

265

*260

246

280

264

264

258

220

186

163

153

143

135

126

9,361

30.2

18,570

Aug.

113

105

93

83

65

57

54

52

50

50

48

43

42

37

33

32

31

31

28

*26

28

31

30

28

28

26

24

24

24

31

28

1,375

44.4

2,730

Sept.

27

24

24

22

20

18

16

14

16

16

14

14

13

14

14

16

14

16

16

16

16

14

13

*13

13

13

13

12

13

12

476

15.9

944

Calendar year 1956: Max 1,310 Mln 0 Mean 138 Ac-ft 100,300

Water year 1956-57: Max 1,210 Min 0 Mean 103 Ac-ft 74,640

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

streams.

b Stage-discharge relation affected by Ice.

Note. Stage-discharge relation affected by backwater from Mackay Reservoir May 28-30, June 6 to 

JulyTl.
96 MUD LAKE-LOST RIVER BASINS

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

Location. Lat 43°58'10", long 113°44 I 00", in NW£ sec. 4, T. 7 N. , R. 23 E. , on left bank 

3 miles upstream from Mackay Dam and 7j miles northwest of Mackay.

Records available. May 1919 to September 1957.

;e. Water-stage recorder. Datum of gage is 6,062.38 ft above mean sea level, unad- 

"usted. Prior to May 26, 1919, staff gage and May 26, 1919, to May 13, 1938, waterstage recorder, at site 200 ft upstream at different datutns. Staff gage on Mackay 

Reservoir is used as an auxiliary gage during periods of backwater from Mackay 

Reservoir.

Average discharge.--38 years, 58.6 cfs (42,420 acre-ft per year).

Extremes.--Maximum discharge during year, 770 cfs June 5; maximum gage height, 5.61 ft 

July 2 (backwater from Mackay Reservoir); minimum discharge, 7.2 cfs Jan. 27 (gage 

height, 1.91 ft).

1919-57: Maximum discharge, 1,200 cfs (estimated) about June 12, 1921 (gage 

height, 4.45 ft, from floodmark, site and datum then in use); maximum gage height, 

that of July 2, 1957; minimum discharge, 3-.8 cfs Mar. 9, 1956 (gage height, 1.73 ft).

Remarks.--Records good except those for periods of backwater from Mackay Reservoir, which 

are fair. Diversions above station for irrigation. See page 99 for sum of surface 

inflow to Mackay Reservoir.

Cooperation. Water-stage recorder inspected by employees of Water District No. 27.

Rating table, water year 1956-57, except periods of backwater from Mackay

Reservoir (gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Apr. 23 to May 25, July 24 to Sept. 30)

1.8

1.9

2.0

2.1 

2.3 

2.5

3.0 

3.5 

4.0 

4.5 

5.0

160

270

425

640

905

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

ZO

Zl

22

23

24

25

26

27

28

Z9

30

31

Total

Mean

Ac-ft

Oct.

16 

16

16

16

16

16

16

*16

17

TT

17

17

17

16

16

16

15

15

15

15

15

15

15

15

15

15

15

14

13

14 

14

481

15.5

954

Nov.

Is- 13

is

13

13

13

13

13

*13

13

13

13

13

13

12

12

12

12

12

12

12

11

12

12

12

12

12

12

12

12

373

12.4

740

Dec.

12 

TT

11

11

11

11

11

11

11

*11

11

11

11

11

11

11

11

11

11

11

10

10lil 9.8

9.8

9.8

9.8

9.8

9.8

9.8 

9.8

329.2

10.6

653

Calendar year 1956: Max 713

Jan.

9.8 

9.4

9.0

9.0

9.0

9.0

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

9.0

9.0

8.7

8.7

8.7

*8.7

8.1

8.7

8.4

8.4 

8.4

271.8

8.77

539

Feb.

8.4 

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.1

8.1

7.8

775

7.8

7.8

7.8

7.8

8.1

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.1

8.1

-

230.1

8.22

456

Mar.

8.1

aTT

8.1

8.1

8.1

8.1

8.1

8.1

8.4

8.1

8.4

8.4

8.4

*8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.7

¥77

8.7 

8.7

258.9

8.35

514

Apr.

8.7 

8.7

8.7

8.7

8.7

8.7

8.7

8.7

*8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

9.0

9.0

9.0

9.0

9.4

9.4

8.7

8.7

8.4

8.4

8.4

8.4

8.4

8.1

261.5

8.72

519

Mln 4.0 Mean 63.1

May

ftr

8.1

8.4

8.4

8.4

*8.1

8.1

8.4

9.0

11

12

13

18

24

28

32

38

62

110

92

71

59

50

43

39

68

133

142

174 

199

1,501.1

48.4

2,980

June

251 

341

497

*645

721

703

682

619

620

571

455

377

369

334

310

253

236

25T

288

350

352

341

344

333

394

408

393

382

433

406

12,665

422

25,120

July

436~ 439 

350

193

168

172

163

154

122

120

115

100

90

80

75

65

40

*37

35

35

40

50

52

45

42

35

31

30

28

27 

16

3,395

110

6,730

Aug.

25 

24

24

23

23

23

25

25

24

24

23

23

22

22

22

21

21

21

21

*20

22

25

24

22

21

20

20

21

22

28 

26

707

22.8

1,400

Sept.

M23

23

22

22

21

20

20

20

20

20

20

20

20

19

19

20

20

20

19

18

Ta *ie

18

18

18

18

18

18

598

19.9

1,190

Ac-ft 45,780

Water year 1956-57: Max 727 Mln 7.8 Mean 57.7 Ac-ft 41,800

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by backwater from Mackay Reservoir May 26 to Ju 

June 5 to July 23.
MUD LAKE-LOST RIVER BASINS 97

Warm Spring Creek (east channel) near Mackay, Idaho

Location.--Lat 43°58'10", long 113°44'30", in NWij sec. 4, T. 7 N., R. 23 E., on left bank 

rrm"Tt upstream from confluence with west channel and 1\ miles northwest of Mackay.

Records available.--May 1919 to September 1957.

Gage. Water-stage recorder. Datum of gage is 6,064.60 ft above mean sea level, unad- 

"justed. Prior to May 3, 1920, staff gage at site 100 ft downstream at different datum. 

May 3, 1920, to Dec. 2, 1938, staff gage at site 200 ft downstream at datum 0.26 ft 

lower. Staff gage on Mackay Reservoir is used as an auxiliary gage during periods of 

backwater from reservoir.

Average discharge. 38 years, 31.2 cfs (22,590 acre-ft per year).

Extremes. Maximum discharge during year, 278 cfs June 6 (gage height, 4.27 ft); minimum, 

30 cfs May 8; minimum gage height, 1.90 ft Aug. 18.

1919-57: Maximum discharge, that of June 6, 1957; minimum, 5.2 cfs Apr. 16, 1955 

(gage height, 1.35 ft).

Remarks. Records good. Major portion of flow is return from irrigation, seepage from 

river channel upstream, and discharge of large spring. See page 99 for sum of surface 

inflow to Mackay Reservoir.

Cooperation. Water-stage recorder inspected by employees of Water District No. 27.

Rating table, water year 1956-57, except period of backwater from Mackay Reservoir (gage

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used June 3-11, July 22 to Sept. 30)

1.9

2.0 

2.5 

3.0

3.5 

4.0 

4.6

157

207

277

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

48

45

48

49

49

50

51

*52

54

55

56

56

56

56

56

56

55

55

56

55

55

56

56

56

56

56

58

57

56

56

56

1,679

54.2

3,330

Nov.

56

55

54

54

54

55

54

54

*54

54

54

54

54

54

54

54

54

54

54

53

53

53

52

52

52

52

52

51

5T

51

1,602

53.4

3,180

Dec.

51

52

5T

51

52

52

352

a52

a52

*52

52

51

51

52

52

51

51

51

51

51

51

351

51

50

50

a 50

350

50

49

49

49

1,580

51.0

3,130

J3n.

a49

a49

349

349

349

49

349

349

349

a49

a49

a49

49

349

349

349

349

349

349

49

349

349

349

349

a49

*49

49

349

a49

a49

a49

1,519

49.0

3,010

Feb.

349

a49

49

349

349

349

348 348"

348

48

"348

348

349

49

49

49

49

49

49

49

48

48

49

49

48

48

48

48

-

1,360

48.6

2,700

Mar.

48

4T

48

47

47

47

47

47

48

47

48

47

47

*46

46

46

46

46

46

46

46

47

46

46

£5

46

47

47

46

46

45

1,444

46.6

2,860

Apr.

45

45

45

44

44

45

44

45

*44

44

44

44

42

43

42

42

42

42

42

42

43

42

40

40

39

38

36

33

3T

33

1,247

41.6

2,470

May

32

32

32

33

33

32

*32

31

3?

34

40

42

44

52

57

60

63

66

80

100

97

89

84

80

78

76

80

92

104

110

118

1,935

62.4

3,840

June

131

141

188

236

*268

276

TTS

267

258

233

187

155

145

127

105

102

89

79

76

83

93

87

73

30" 71

86

89

87

90

103

4,281

143

8,490

July

123

124

TOT

97

91

81

85

87

88

87

87

83

83

78

66

61

62

*52

42

45

57

54

50

51

49

46

44

44

44

44

44

2,153

69.5

4,270

Aug.

44

44

43

43

42

42

43

42

42

40

40

40

40

40

40

39

39

38

39

*39

43

45

44

42

41

40

40

41

42

"TIT 48

46

1,291

41.6

2,560

Sept.

45

44

44

44

44

44

44

46

45

46

46

45

44

44

44

45

45

45

46

46

47

4T

45

*46

46

47

47

47

47

47

1,360

45.3

2,700

Calendar year 1956: Max 216 Mln 12 Mean 50.0 Ac-ft 36,340

Water year 1956-57: Max 276 Mln 31 Mean 58.8 Ac-ft 42,540

* Discharge measurement made on this day.

3 No gsge-height record; dlschsrge estimated on basis of records for Warm Springs Creek (west 

channel) snd records for other ststlons sbove Mscksy Reservoir.
98 MUD LAKE-LOST RIVER BASINS

Warm Spring Creek (west channel) near Mackay, Idaho

Location. Lat 43°58'00", long 113°44'30", in NWt: sec. 4, T. 7 N., R. 23 E., on right 

bank 500 ft upstream from confluence with east channel and 7| miles northwest of 

Mackay.

Records available. May 1919 to September 1957.

Gage. Water-stage recorder. Datum of gage is 6,064.46 ft above mean sea level, unadJusted. Prior to May 4, 1920, at datum 0.54 ft lower. May 4, 1920, to Dec. 2, 1938, 

at datum 0.46 ft higher. Staff gage on Mackay Reservoir is used as an auxiliary gage 

during periods of backwater from reservoir.

Average discharge. 38 years, 96.0 cfs (69,500 acre-ft per year).

Extremes. Maximum discharge during year, 346 cfs June 5, 6; maximum gage height, 3.82 ft 

July 2; minimum discharge, 60 cfs May 7, 8, 9 (gage height, 1.34 ft).

1919-57: Maximum discharge, 600 cfs (estimated) Aug. 11, 1936 (gage height, 4.88 ft, 

present datum, from floodmark); minimum, 49 cfs Apr. 27, 1935 (gage height, 1.08 ft, 

present datum).

Remarks. Records excellent except those for periods of no gage-height record or backwater 

from Mackay Reservoir, which are good. Major portion-of flow is return flow from irrigation, seepage from river channel upstream, and discharge of large spring. See following page for sum of surface inflow to Mackay Reservoir.

Cooperation. Water-stage recorder inspected by employees of Water District No. 27.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

99

99

99

1OO

101

101

102

*102

106

107

1O8

157

105

105

106

1O5

104

104

104

102

102

1O1

100

99

99

100" 98

1OO

99

100

98

3,162

102

6,270

Nov.

96

96

96

94

94

94

94

*93

94

94

94

94

93

93

93

93

93

92

92

93

93

93

93

93

93

93

92

92

90

2,803

93.4

5,560

Dec.

90

90

92

52

92

90

9O

9O

92

*92

92

9O

90

9O

90

90

90

92

92

92

a92

a92

92

90

90

89

89

89

89

89

2,808

9O.6

5,570

Calendar year 1956: Max 323

Jan.

89

89

90

w

a89

89

89

9O

89

89

a88

a88

88

88

89

89

a89

a89

a89

89

a89

a89

a89

a89

a89

*89

a88

87

86

86

85

2,744

88.5

5,440

Feb.

84

SI

83

84

84

84

84

84

84

84

84

83

82

SI

84

83

83

83

83

83

83

83

84

82

83

83

83

83

-

2,335

83.4

4,630

Mar.

83

83

83

83

S3

82

S2

82

83

82

82

82

82

*82

82

82

83

83

83

84

84

84

84

86

86

86

88

88

88

Ito" 89

oy

2,603

84. 0

5,160

Apr.

89

89

90

975

90

9O

90

90

*90

88

89

88

88

87

84

86

84

83

83

83

83

80

78

76

75

74

70

64

63

63

2,477

82.6

4,910

May

63

63

63

63

63

62

*62

60

ST

63

68

70

71

78

84

87

89

93

112

129

122

111

105

101

loo

99

107

123

136

150

160

2,818

90.9

5,590

June

166

ISO

229

286

*328

340 330"

309

3O6

289

249

216

208

185

157

155

135

120

116

127

145

132

113

106

US

126

128

131

137

151

5,716

191

11,340

July

188

19O

1ST

150

141

127

142

149

15O

155

147

140

145

142

117

106

108

*96

85

90

95

104

101

96

95

90

87

87

87

84

82

3,743

121

7,420

Aug.

SI

SI

81

82

82

81

83

83

83

83

82

82

81

81

81

81

81

81

81

*82

88

88

86

84

83

83

84

84

86

7T5" 92 

ay

2,580

83.2

5,120

Sept.

88

87

87

87

87

87

86

93

92

93

93

93

93

92

92

92

93

93

93

a93

a93

93

a93

*93

94

94

94

94

94

95

2,751

91.7

5,460

Mln 84 Mean 122 Ac-ft 88,770

Water year 1956-57: Max 34O Mln 6O Mean 1OO Ac-ft 72,470

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of adjacent records, weather records, 

records for other stations above Mackay Reservoir.

Note. Backwater from Mackay Reservoir May 27-31, June 6 to July 22.
MUD LAKE-LOST RIVER BASINS 99

Surface inflow to Mackay Reservoir, near Mackay, Idaho

Drainage area. 766 sq mi.

Records available. May 1919 to September 1957. Prior to October 1952, published with 

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

Average discharge. 38 years, 258 cfs (186,800 acre-ft per year).

Extremes. 1919-57: Maximum daily discharge, 2,760 cfs June 12, 1921; minimum daily, 

 75~cTs May 10-12, 1935.

Remarks. Records good except those for periods of no discharge record for Big Lost River, 

east and west channels, which are fair. Records are the sum of discharges obtained at 

gaging stations on Big Lost River (east and west channels) and Warm Spring Creek (east 

and west channels) above Mackay Reservoir, near Mackay. Channels are interconnected 

above respective gaging stations, and combined flow represents practically the entire 

surface flow which enters Mackay Reservoir.

Revisions (water years). WSP 1287: 1919-21.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Tota:

Mean

Ac-ft

Oct.

171

m

171

173

174

175

177

178

186

189

191 190"

187

186

187

186

182

182

183

180

180

180

179

178

178

177

181

179

175

178

175

5,579

180

11,070

Nov.

172

TTO

169

168

166

167

166

165

164

165

165

165

165

164

162

162

162

162

161

160

160

159

159

159

159

159

159

157

157

155

4,883

163

9,690

Dec.

155

155

156

156

157

155

154

154

156

156

157

154

154

155

154

153

153

155

155

155

154

154

154

151

151

150

150

150

149

149

149

4,760

154

9,440

Jan.

148

147

148

147

147

147

147

148

147

147

146

146

146

146

147

147

147

147

147

147

147

147

147

147

147

147

145

145

143

143

142

4,539

146

9,000

Feb.

141

14T

140

141

141

141

140

140

140

140

140

139

13?

141

141

140

140

140

140

140

139

139

141

139

139

139

139

139

3,919

140

7, 770

Mar.

139

138

139

138

138

137

137

137

139

137

138

137

137

136

I3T

136

137

137

137

138

138

139

138

140

139

141

144

145

144

145

144

4,305

139

8,540

Apr.

144

144

145

T44

144

145

144

145

144

142

144

143

141

141

137

139

137

136

136

136

137

133

129

127

124

122

116

107

106

106

4,038

135

8,010

May

105

105

105

106

106

104

103

100

T07

166

228

275

324

400

445

480

489

533

722

850

743

625

568

511

481

462

560

732

792

929

1,010

13,262

428

26,300

June

1,170

1,410

1,810

2,280

2,550

2,520

2,410

2,170

2,140

1,960

1,660

1,360

1,210

1,080

972

880

820

810 '540'

950

1,000

980

960

940

1,050

1,100

1,100

1,100

1,200

1,200

41,612

1,387

82 , 540

July

1.500

1,300

1,150

940

820

760

740

720

680

6 SO

680

680

620

580

580

520

480

450

422

417

472

472

467

450

406

357

325

314

302

290

278

18,652

602

37,000

Aug.

263

254

241

231

212

203

205

202

199

197

193

188

185

180

176

173

172

171

169

167

181

189

184

176

173

169

168

170

174

199

189

5,953

192

11,810

Sept.

185

175

17S

176

173

171

173- 167

173

175

173

172

170

170

170

172

171

174

175

175

175

170

169

170

171

172

172

171

172

172

5,185

173

10,280

Calendar year 1956: Max 2,500 Min 128 Mean 374 Ac-ft 271,200

Water year 1956-57= Max 2,530 Min 100 Mean 320 Ac-ft 231,450
100 MOD LAKE-LOST RIVER BASINS

Mackay Reservoir near Mackay, Idaho

Location.--Lat 43°57' , long 113 040', in sec. 12, T. 7 N., R. 23 E., on headgate tower of 

dam on Big Lost River, 4 miles northwest of Mackay.

Records available. January 1919 to September 1957.

Gage. Staff gage read once daily. Datum of gage is 6,000 ft above mean sea level, Utah 

Construction Co. datum, or about 6,001.2 ft above mean sea level, unadjusted.

Extremes. Maximum contents observed during year, 44,710 acre-ft June 28 (gage height, 

 66.75 ft); minimum observed, 9,920 acre-ft Oct. 3 (gage height, 31.90 ft).

1919-57: Maximum contents observed, that of June 28, 1957; no available contents

during periods in 1919-20, 1924, 1926, 1929, 1931-35; minimum gage height observed,

6.3 ft Aug. 5, 1934.

Remarks. Reservoir is formed by earth- and rock-fill dam, which was reconstructed in 

1917-18; storage impounded by original dam not recorded. Crest of spillway was raised 

5 ft in September 1956. Capacity is 44,370 acre-ft between gage heights 7.0 (bottom 

of outlet tunnel) and 66.5 ft (crest of spillway). Dead storage reported to be about 

125 acre-ft. Water is used for irrigation of about 33,000 acres in Big Lost River 

irrigation district. About 9,000 acres irrigated from Big Lost River and tributaries 

above reservoir. Considerable seepage around dam because of its porous foundation, 

but the greater part of this water returns to Big Lost River between reservoir and 

station below reservoir, near Mackay. Figures given herein represent usable contents.

Cooperation. Gage readings and capacity table furnished by Water District No. 27.

Capacity table, water year 1956-57 (gage height, in 

feet, and usable contents, in acre-feet)

30.0

35.0

40.0

45.0

8,730

12,020

15,760

19,940

50.0

55.0

60.0

67.0

24,680

30,020

35,900

45,050

Usable contents, in acre-feet, water year October 1956 to September 1957

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.

10,050 

9,980

9,920 

16,020

10,050

10,100

10,150

10,250

10,310

10,410

10,540

10,716

10,910

11,150

11,320

11,530

11,740

12,090

12,380

12,670

12,960

13,180

13,470

13,770

13,990

14,220

14,520

14,750

14,980

15,250

15j,_520

39.88

+5,570

Nov.

15.760 

16,636

16,350 

16,550

16,750

16,960

17,200

17,410

17,610

17,860

18,200

18,370

18,580

18,800

19,060

19,320

19,450

19,580

13,760

20,120

20,340

20,520

20,750

20,930

21,210

21,390

21,580

21,760

21,950

22.140

47.51

+6,590

Dec.

22.350 

22,440

22,540 

22,910

23,100

23,310

23,490

23,690

23,880

24,030

24,180

24,380

24,580

24,730

24,890

25,090

25,300

25,400

25,550

25,760

25,910

26,120

26,220

26,330

26,540

26,700

26,800

26,980

27,180

27,280

27 , 410

52.72

+5,270

Jan.

27,600 

27,710

27,870 

28,030

28,140

28,270

28,410

28,520

28,690

28,850

28,960

29,130

29,180

29,350

29,460

29,570

29,680

29,800

29,960

30,080

30,220

30,270

30,380

30,530

30,640

30,760

30,870

30,950

31,100

31,150

31j270

56.16

+3,820

Feb.

51,380 

31,500

31,610 

31,710

31,790

31,900

32,020

32,080

32,190

32,310

32,370

32,480

32,540

32,660

32,780

32,840

32,890

33,010

33,070

33,190

33,310

33,370

33,540

33,600

33,720

33,780

33,900

33.960

58.46

+2,690

Mar.

34,080 

34,140

34,260 

34,320

34,440

34,500

34,560

34,680

34,740

34,800

34,920

34,990

35,050

35,170

35,230

35,290

35,350

35,410

35,470

35,530

35,660

35,720

35,780

35,840

35,900

35,960

36,020

36,110

36,210

36,270

36,330

60.38

+2,340

Apr.

56.400 

36,460

36,520 

36,580

36,640

36,710

36,770

36,830

36,890

36,950

37,020

37,080

37,140

37,200

37,240

37,270

37,290

37,390

37,420

37,470

37,520

37,640

37,710

37,730

37,730

37,760

37,770

37,800

37,800

37,800

61.52

+1,430

May

37,800 

37,800

37,800 

37,800

37,800

37,800

37,670

37,420

37,140

36,890

36,640

36,950

37,020

37,390

37,270

37,020

36,770

36,460

36,646

37,140

37,900

38,660

38,400

38,400

39,240

39,820

40,610

41,600

42,070

41,536

40,800

63.73

+2,850

June

40,b40 

39,950

39,430 

39,506

40,220

41,270

42,140

42,340

41,600

41,270

41,530

42,140

42,610

43,420

43,960

43,960

43,960

43,820

43,690

43,760

43,960

44,230

44,440

44,500

44,500

44,530

44,560

44,710

44,640

44,570

66.48

+3,690

July

44,230 

44,300

44,300 

43,890

43,350

43,210

43,350

43,620

43,890

44,030

44,030

44,100

44,030

43,960

43,960

43,890

43,620

43,350

43,150

42,880

41,770

41,270

40,480

39,430

38,400

36,890

34,800

33,960

33,190

32,080

30,980

55.24

-14,050

Aug.

29,850 

28,740

27,600 

26,540

25,500

24,480

23,290

22,140

21,210

20,300

19 , 500

18,630

17,950

17,280

16,390

15,600

14,750

13,990

13,320

12,600

11,880

11,320

11,050

10,840

10,840

10,910

10,950

10,950

10,780

10,780

10,710

33.29

-19,450

Sept.

10,910 

11,160

11,460 

11,600

11,950

12,160

12,380

12,560

12,880

13,030

13,320

13,400

13,510

13 , 540

13,580

13,690

13,770

13,840

13,920

13,990

14,070

14,220

14,370

14,520

14,710

14,820

14,860

15,060

15,210

15,360

39.60

+4,600

Calendar year 1956.................... * +12,730

Water year 1956-57.................... * +5,350

t Gage height, in feet, interpolated to midnight, at end of month. 

* Change in contents, in acre-feet.

Note. Daily contents as given are computed from once-daily staff-gage readings usually mad 

>etween 8 and 10 a.m.
MOD LAKE-LOST RIVER BASINS 101

Sharp ditch near Mackay, Idaho

Location. Lat 43°57', long 113°39', in sec. 7, T. 7 N., R. 24 E., on left bank 1,600 ft 

downstream from head of ditch, three-quarters of a mile downstream from Mackay Reservoir, and 3% miles northwest of Mackay.

Records available. June 1912 to October 1914, March 1919 to September 1957 (seasonal 

 records only 1912-14, 1919-20, 1923-26, 1930, 1937).

Gage. Water-stage recorder and sharp-crested weir. Datum of gage is 5,989.48 ft above 

mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Oct. 1, 

1936, and June 24, 1938, to Apr. 24, 1939, staff gage and Oct. 1, 1936, to June 23, 

1938, water-stage recorder, at several sites 1,300 to 1,600 ft upstream at various 

daturas.

Extremes. 1912-14. 1919-57: 

times most years.

Maximum daily discharge, 46 cfs May 30, 1951; no flow at

Remarks. Records excellent except those Nov. 12 to Apr. 7, which are poor. Sharp ditch 

dTverts from east side of Big Lost River in SE£ 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, which diverts from Sharp ditch above station, was 

reported by water-master to have carried 219 acre-ft during year (52 In June, 103 in 

July, 52 in August, and 12 In September).

Cooperation. Water-stage recorder Inspected by employees of Water District No. 27.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

3.9

4.0

4.6

3.7

4.2

4.2

4.2

5.2

6.2

*6.2

6.0

5.7

3.6

2.3

2.2

1.6

.8

1.9

3.7

2.6

1.0

1.6

2.0

.8

.9

.8

.8

.8

.8

1.2

1.3

88.8

2.86

176

Nov.

1.3

TT3

1.3

1.3

1.2

1.1

1.1

*1 .1

1.1

1.1

1.3

1.3

1.3

1.3

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.3

1.3

1.3

1.3

.9

.5

.5

.5

.5

33-. 6

1.12

67

Dec.

~0.5

.5

.5

.5

b.

*.

> .4

> .3

11.9

0.38

24

Jan.

> 0.2

> .1

**.!

} >

4.5

0.15

8.9

Feb.

> 0.1

> 0

-

1.1

0.04

2.2

Mar.

(*)

0

0

0

Apr.

I"

*.2

.2

.2

.2

.2

.2

.3

.7

.7

.8

78

.8

.8

.5

.4

0

0

0

0

0

0

0

0

7.7

0.26

15

May

o

0

0

0

0

0

.1

.1

.1

.1

0

.1

0

.1

.1

.1

0

0

0

0

0

0

0

0

0

0

1.6

3.3

3.7

3.7

13.1

0.42

26

June

5.8

7.6

10

*15

21

26

29

30

30

26

26

27

26

26

26

26

25

25

24

29

27

21

21

24

27

27

29

33

34

33

736.4

24.5

1,460

July

33

33

34

33

32

29

33

33

33

29

25

24

22

22

24

25

23

21

*21

20

18

18

21

23

23

25

27

26

27 

29

25

811

26.2

1,610

Aug.

24

22

21

20

20

21

22

22

24

24

24

25

27

27

29

21

18

19

*18

18

19

20

18

16

16

15 18

21

21 

21

15

646

20.8

1,280

Sept.

8.0

6.4

6.2

5.2

5.5

5.0

STo

5.2

10

15

15

16

21

28

11

31

31

27

22

22

21

19

19

*18

18

18

17

17

17 

18

497.5

16.6

987

Calendar year 1956: Max 34 Mln - Mean 8.94 Ac-ft 6,49O

Water year 1956-57: Max 34 Mln 0 Mean 7.81 Ac-ft 5,660

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.

Note. No gage-height record Nov. 12-17, 19-24, Nov. 26 to Dec. 1, Dec. 3-8, Dec. 11 to Mar. 13, 

Mar. 15-26, Mar. 29 to Apr. 7; discharge Interpolated or estimated on basis of 4 discharge measurements, weather records, and records for Big Lost River below Mackay Reservoir.
102 MUD LAKE-LOST RIVER BASINS

Big Lost River below Mackay Reservoir, near Mackay, Idaho

Location. La t 43°56" , long 113°38' , in sec. 18, T. 7 N. , R. 24 E., on left bank 450 ft 

downstream from Oleson Suspension Bridge, 1 mile downstream from head of Sharp ditch, 

l| miles downstream from Mackay Reservoir, and Zj miles northwest of Mackay.

Drainage area. 813 sq mi.

Records available. December 1903 to August 1906 and May 1912 to March 1915 (published 

as "near Mackay" ) , January 1919 to September 1957.

Gage. Water-stage recorder. Datum of gage is 5,946.39 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to May 12, 1912, and June 5, 1912, to 

Apr. 28, 1913, staff gages at sites within 1 mile upstream at different datums. 

May 12 to June 4, 1912, staff gages at site ij- miles upstream (above Sharp ditch) at 

different datums. Apr. 29, 1913, to Mar. 15, 1915, staff gage at site 1 mile downstream (below Streeter ditch) at different datum.

Average discharge . 41 years (1904-5, 1912-14, 1919-57), 280 cfs (202,700 acre-ft per 

year) .

Extremes. Maximum discharge during year, 2,400 cfs June 8 (gage height, 5.55 ft); minimum, 55 cfs Nov. 3 (gage height, 1.46 ft).

1903-6, , , , , 

5.79 ft); minimum, 18 cfs Nov. 1, 1934; minimum gage height, 1.23 ft Nov

1912-15, 1919-57: Maximum discharge, 2,990 cfs June 10, 1921 ga

. 5-8

height, 

1926.

Remarks . Records excellent. Sharp ditch (see preceding page) is only diversion between 

station and reservoir; about 9,000 acres of land are irrigated by diversions from 

river and tributaries above reservoir. Flow regulated by Mackay Reservoir (see p. 100).

Cooperation. Water-stage recorder inspected by employees of Water District No. 27. 

Revisions (water years) . WSP 1347; 1904-6.

Rating table, water year 1956-57 (gage height, In feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Oct. 14 to Nov. 11)

1.6 

1.8 

E.I 

2.5

10O 

194 

350

3.0 

4.0 

5.5

610

1,250

2,360

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

TotaJ

Mean

Ac-ft

Oct.

259

236

204

191

174

167

167

167

167

*167

160

138

131

117

106

85

76

74

74

74

78

78

78

80

80

80

80

80

80

80 

80

3,808

123

7,550

Nov.

80

76

69

73

73

73

73

73

*73

73

73

a73

a74

a74

74

74

74

74

74

74

74

74

76

78

80

80

80

80

80

80

2,256

75.2

4,470

Dec.

82

82

82

82

82

85

85

85

85

*85

85

85

85

85

87

87

87

87

89

89

89

89

89

89

89

91

91

93

96

96 

96

2,709

87.4

5,370

Jan.

96

96

96

96

98

98

98

98

100

100

103

103

103

103

103

103

103

106

106

106

106

106

106

108

1M

108

*108

a!08

a!08

alOS

alOS

3,197

103

6,340

Feb.

al08

alOS

108

alOS

allo

allO

allO

allO

allO

111

al!2

al!2

al!2

al!2

allE

al!4

al!4

al!4

al!4

al!4

al!6

al!6

al!6

al!6

117

117

117

117

_

3,155

113

6,260

Mar.

117

TT7

117

117

120

120

120

122

122

122

122

122

122

*122

122

122

122

122

122

122

122

122

122

122

122

122

122

122

122

122

122

3,756

121

7,450

Apr.

122

T?2

122

122

122

122

122

*122

122

122

122

122

122

122

122

125

122

125

125

125

125

125

128

T28

125

125

125

125

125

125

3,708

124

7,350

May

128

128

128

128

128

160

*194

233

262

262

262

262

a280

380

522

622

616

566

456

456

456

578

652

300

157

201

177

254

917

1,220

 =J 

12,415

400

24,620

June

1,600

1,790

*1,890

2,OOO

2,080

2,130

2,260

2.550

2,310

1,910

1,420

1,040

945

945

959

980

959

898

790

766

772

796

856

874

931

952

966

1,070

1,180

1,170

39,589

1,320

78,520

July

1,190

1,230

1,510

1,260

1,070

832

712

594

6T6

682

706

712

700

682

664

640

640

640

*640

640

670

754

850

886

910

917

924

966

945

880

832

,25,694

829

50,960

Aug.

820

808

808

814

808

814

802

772

724

700

628

572

566

594

646

652

628

577

*560

544

516

440

364

298

218

204

204

233

270

278

196

17,058

550

33,830

Sept.

125

108

87

87

87

89

89

89

87

87

120

150

T50

144

141

141

144

144

147

141

134

125

125

*125

125

125

120

117

117

114

3,584

119

7,110

Calendar year 1956: Max 2,500 Mln 69 Mean 380 Ac-ft 276,100

Water year 1956-57: Max 2,350 Mln 69 Mean 331 Ac-ft 239,800

* Discharge measurement made on this day.

a No gage-height record; discharge Interpolated or estimated on basis of recorded range In stage.
MOD LAKE-LOST RIVER BASINS 103

Big Lost River near Arco, Idaho

Location.--Lat 43°35', long 113°16', near line between sees. 17 and 20, T. 3 N., R. 27 E, 

on right bank a quarter of a mile downstream from head of box canyon, 0.4 mile downstream from slough entering from left bank, and 4 miles southeast of Arco.

Drainage area. 1,410 sq mi, approximately. 

Records available. August 1946 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 5,240 ft (by barometer). Prior to 

Oct. 14, 1952, at site 800 ft upstream at datum 3.08 ft higher.

Average discharge. 11 years, 63.9 cfs (46,260 acre-ft per year).

Extremes.--Maximum discharge during year, 909 cfs June 11 (gage height, 6.07 ft); minimum, 20 cfs Oct. 2 (gage height, 2.82 ft), but may have been less during period of ice 

effect.

1946-57: Maximum discharge, 1,050 cfs Mar. 23, 1956 (gage height, 6.32 ft); minimum, 0.4 cfs June 1, 2, 1955 (gage height, 2.10 ft).

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Station is below all large diversions for irrigation in Big Lost 

River Valley. Flow regulated by Mackay Reservoir (see p. 100). About 42,000 acres of 

land irrigated by diversions from river and tributaries above station.

Rating table, water year 1956-57, except periods of Ice effect ( 

height, in feet, and discharge, in cubic feet per second)

2.8 

3.0 

3.2 

3.5

4.0 153

4.5 

5.0 

5.5 

6.2

258

415

615

980

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Tota]

Mean

Ac-ft

Oct.

*24

'ZZ

24

27

27

27

27

28

31

36

41

47

54

48

43

46

50

61

62

61

62

59

56

60

61

68

68

64

73

84

1,463

47.2

2,900

Nov.

83

7S

75

75

79

79

76

74

76

75

74

*73

71

64

62

64

69

69

60

55

5±

55

55

58

58

58

59

59

59

58

2,002

66.7

3,970

Dec.

59

59

59

59

61

60

58

54

53

52

51

*50

51

53

54

55

55

54

53

52

53

50

52

52

52

52

52

52

52

51

50

1,670

53.9

3,310

Calendar year 1956: Max 962

Jan.

49

4S

47

45

43

45

46

47

42

41

45

49

48

45

40

35

30

28

29

30

27

*25

23

22

22

22

22

22

22

22

27

1,088

35.1

2,160

Feb.

30

35

33

32

37

36

34

37

36

34

38

38

36

38

40

39

38

35

39

43

41

45

45

45

45

45

44

45

-

1,083

38.7

2,150

Min 4.£

Mar.

46

46

45

46

44

42

*43

45

46

45

44

46

45

44

43

43

42

42

42

42

42

42

 42

42

42

41

39

39

39

39

1,327

42.8

2,630

Apr.

40

39

39

38

3S

39

40

*38

38

37

38

39

38

38

36

34

32

33

37

39

40

38

36

34

34

34

33

31

28

*28

1,086

36.2

2,150

May

27

27

26

28

27

25

25

27

28

30

39

55

79

112

146

178

233

287

359

398

429

443

443

502

478

339

293

287

279

38?

526

6,562

212

13,020

June

642

685

715

745

*790

800

780

765

785

848

892

775

454

261

202

184

176

170

142

104

85

73

68

69

69

80

91

82

80

104

11,716

391

23,240

July

144

182

220

233

257

220

157

113

84

56

52

48

55

62

64

56

*50

48

48

58

67

65

58

50

42

43

42

41

39

40

42

2,716

87.6

5,390

Aug.

39

36

36

36

*33

32

30

30

27

27

27

27

27

25

25

25

28

25

26

24

25

28

29

30

29

28

27

24

27

32

42

906

29.2

1,800

Sept.

96

120

105

101

95

85

83

75

*62

56

46

33

34

45

49

52

56

56

63

64

62

60

60

64

61

60

55

48

35

32

1,916

63.9

3,800

Mean 93.0 Ac-ft 67,510

Water year 1956-57= Max 892 Min 22 Mean 91.9 Ac-ft 66,520

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 19, 20, Dec. 7-11, 19, 20, Dec. 22 to Mar. 3 

(no gage-height record Jan. 19-21, Feb. 9-27j discharge estimated on basis of weather records and 

records for nearby streams).
104 RILEY CREEK BASIN

Brails ford ditch near Hagerman, Idaho

Location. Lat 42°46'00", long 114°S1'50", in N^NW£ sec. 6, T. 8 S. , R. 14 E. , on left bank 

250 ft upstream from road bridge, 0.5 mile downstream from point of diversion at Lewis 

Spring, and 4.2 miles southeast of Hagerman.

Records available .--June 1951 to September 1957.

Gage . Water-stage recorder. Altitude of gage is 3,000 ft (from topographic map).

Average discharge . 6 years, 7.72 cfs (5,590 acre-ft per year).

Extremes. 1951-57: Maximum daily discharge, 16 cfs June 23-26, July 19-26, 30,

Aug. 19, 20, 1951; no flow at times during March, April, September, and October 1952.

Remarks . Records good except those below 3 cfs and those for periods of no gage-height 

record, which are fair. Brailsford ditch diverts from Lewis Spring for irrigation.

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

l

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

Total

Mean

Ac-ft

Oct.

12

12

12

13

13

13

13

13

13

11

9.4

9.4

8.3

7.8

7.8

7.5

775

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

a7.5

a7.5

a7.5

a7.5

287.7

9.28

571

Calendar yeai

Nov.

a7.5

a7.5

a7.5

a7.5

a7.5

a7.5

*7.5

7.5

7.5

7.5

7.8

778

7.8

7.5

7.0

6.0

5.0

570

5.0

5.0

5.0

5.0

5.0

5.2

5.2

5.2

5.4

5.2

5.4

5.4

190.9

6.36

379

Dec.

5.6

5.6

5.6

5.6

5.6

5.8

5.8

5.8

6.0

6.0

5.8

5.8

5.8

5.8

5.8

6.0

*6.2

6.0

5.8

6.0

5.6

5.8

5.8

5.6

5.8

5.8

7.0

8.3

8.0

8.0

8 . 8

190.9

6.16

379

- 1956: Max 15

Jan.

7.5

870

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8.3

8.3

8.0

*8.0

8.3

8.3

8.3

8.3

8.5

875

8.5

8.5

8.5

8.5

8.5

8.5

8.5

8.5

8.3

8.3

8.3

255.2

8.23

506

Feb.

8.0

8.0

8.3

8.3

8.0

8.0

8.0

8.0

8.0

7.8

7.2

7.5

7.2

7.0

T78

8.5

8.5

8.5

8.8

878

8.8

8.8

8.8

8.8

8.8

8.8

*8.5

8.5

-

230.0

8.21

456

Mln 0.4

Mar.

8.5

8.5

8.5

8.5

8.5

a8.5

a8.5

a8.5

a8. 5

a8.5

a8. 5

a8. 8

a8.8

a8.8

a8. 8

a9.0

a9.0

a9.0

a9.0

a9.0

9.1

9.1

9.1

9.4

9.4

9.1

9.4

5.6

a. 2

a. 2

a. 2

244.5

7.89

485

Apr.

0.6

T74

1.4

1.4

1.4

1.2

2.3

1.1

1.0

1.8

8.1

11

11

11

11

12

12

12

12

12

12

12

12

12

12

12

12

12

12

*12

245.7

8.19

487

May

13

T3

13

13

13

13

13

12

12

12

12

12

12

11

IT

11

11

12

11

11

11

11

11

11

11

11

*11

11

11

12

12

364

11.7

722

June

12

T2

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

*12

12

12

10

9.3

12

12

12

355.3

11.8

705

July

12

12

12

12

12

11

11

11

11

11

11

11

10

10

*10

10

10

10

10

10

9.1

8.3

3.5

a. 2

a72

9.2

15

T4

14

14

a!3

317.5

10.2

630

Aug.

a!3

T3

13

13

13

12

12

12

13

13

13

12

12

11

13

13

12

12

*13

13

13

13

12

12

12

a!2

a!2

all

11

11

1°.

380

12.3

754

Sept.

9.8

9.4

9.4

9.1

974

11

11

11

12

TT

11

11

11

all

all

*11

11

11

11

11

11

11

11

11

11

11

10

10

10

10

319.1

10.6

633

Mean 8.17 Ac-ft 5,930

Water year 1956-57: Max 15 Mln 0.2 Mean 9. 26 Ac-ft 6,710

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for Rlley Creek below Lewis 

Spring and other Snake River spring stations.
RILEY CREEK BASIN 105

Riley Creek below Lewis Spring, near Hagerman, Idaho

Location. Lat 42°45'50", long 114°51'30", in SE^NWi sec. 6, T. 8 S. , R. 14 E. , on left 

bank 560 ft downstream from confluence of Riley Creek springs and Lewis Spring, an 

eighth of a mile downstream from U. S. Pish Hatchery, and 4 miles southeast of Hagerman.

Records available. June 1951 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 2,955 ft (from topographic map). Prior 

Tfo June 17, 1955, at site 1,200 ft downstream at different datum.

Average discharge. 6 years, 63.1 cfs (45,680 acre-ft per year), excluding diversion from 

Bickel Spring.

Extremes. 1951-57; Maximum daily discharge, 78 cfs Nov. 14, 15, 20-23, 1953; minimum 

daily, 50 cfs July 7, 21, 22, 29, 30, Oct. 3-5, 1956.

Remarks.--Records good. Plow at this station plus flow of Brailsford ditch (see preceding page) gives total flow from Riley and Lewis Springs plus small intervening inflow. 

Plow diverted from Lewis Spring to Brailsford ditch for irrigation. Slight regulation 

by ponds at fish hatchery. Beginning about Aug. 30, 1957, water was diverted from 

Bickel Spring to Riley Creek above station. Records include the diversion which is 

estimated to total 10 acre-ft in August and 190 acre-ft in September.

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

1.4

1.5

1.6

1.7

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

51

51

50

5o

50

51

52

52

52

54

56

56

56

58

58

58

59

60

60

60

60

60

60

60

60

60

60

60

60

60

60

1,754

56.6

3,480

Nov.

60

59

59

59

59

59

*59

60

60

60

60

60

61

61

61

62

63

63

63

63

63

63

63

62

61

61

61

61

62

62

1,830

61.0

3,630

Dec.

62

62

62

63

63

63

63

63

63

63

63

63

63

63

63

63

*63

63

63

63

63

62

62

62

63

62

60

59

59

59

59

1,927

62.2

3,820

Calendar year 1956: Max 65

Jan.

59

59

59

58

58

58

58

59

59

59

59

59

60

 59

60

60

60

60

60

60

60

59

59

59

59

60

60

59

59

59

59

1,835

59.2

3,640

Feb.

59

59

58

58

59

59

59

59

59

59

58

58

57

57

56

56

56

56

56

56

56

56

56

56

56

56

*56

56

-

1,602

57.2

3,180

Mar.

56

56

56

56

56

56

57

57

57

57

57

57

57

57

57

58

57

56

56

56

56

56

56

56

57

57

57

61

66

66

67

1,787

57.6

3,540

Apr.

*66

66

66

67

67

67

67

67

65

64

59

56

56

56

56

56

55

56

56

56

56

56

56

56

56

56

56

56

56

*56

1,784

59.5

3,540

May

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

57

58

58

59

58

58

58

*58

58

57

56

56

1,755

56.6

3,480

June

56

5F

55

55

56

55

55

56

55

55

54

54

54

55

55

56

55

54

54

54

54

54

*54

54

54

55

56

55

55

55

1,645

54.8

3,260

July

56

56

57

57

57

57

56

56

56

56

56

56

56

56

*56

56

56

56

56

56

56

56

60

63

63

56

53

54

54

54

54

1,747

56.4

3,470

Aug.

54

55

55

55

56

56

56

56

56

57

56

56

56

58

56

56

56

56

*56

55

55

55

55

55

55

55

55

55

56

CQoy 59"

1,731

55.8

3,430

Sept.

61

60

62

63

62

58

57

59

60

61

63

63

63

63

63

*63

64

65

66

67

67

67

67

64

64

65

66

65

61

63

1,892

63.1

3,750

Mln 50 Mean 57.7 Ac-ft 41,880

Water year 1956-57: Max 67 Mln 5O Mean 58.3 Ac-ft 42,220

Discharge measurement made on this day.

503667 O - 59 - !
106 SNAKE RIVER MAIN STEM

Snake River below Lower Salmon Palls, near Hagerman, Idaho

Location.--Lat 42°51'36", long 114°54'42", in lot 3, sec. 2, T. 7 S., R. 13 E., on right 

bank half a mile downstream from Lower Salmon Palls powerplant, 1 mile upstream from 

Malad River, and 2-J- miles north of Hagerman.

Records available. October 1937 to September 1957. 

1937, published in WSP 1317.

Monthly discharge only for October

Gage. Water-stage recorder. Datum of gage is 2,727.7 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947, by stadia levels. Prior to Jan. 3, 1950, 

at site 340 ft upstream at same datum.

Extremes.--Maximum discharge during year, 29.100 cfs May 22 (gage height, 15.06 ft); minimum, 957 cfs May 4 (gage height, 3.03 ft); minimum daily. 5,920 cfs July 2.

1937-57: Maximum discharge, 29,800 cfs June 27, 1950 (gage height, 15.60 ft); minimum, probably less than 100 cfs Jan. 10, 11, 1950, when river was below intake pipes; 

minimum daily, 3,970 cfs July 8, 1951.

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

good. Plow regulated by Lower Salmon Palls powerplant and many reservoirs above 

station. At times practically entire flow is diverted at Milner during irrigation 

seasons; only minor diversions below Milner.

Rating table, water year 1956-57 (gage height, In feet, and 

discharge, In cubic feet per second)

6.4 5,720 10.0 14,000

7.0 6,920 12.0 19,600

8.0 9,130 15.0 28,900

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 

2

5 

4

5

6 

7

8

9

10

11

12

15 

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29 

50

51

Total

Mean

Ac-ft

Oct.

7.770 

7,870

8,320 

8,420

8,120

8,640 

8,120

9,980

9,800

9,420

8,580

10,500

12.400 

12,366

11,500

10,800

8,610

8,690

9,140

9,440

9,140

10,100

9,580

10,400

9,760

10,100

10,500

9,580

9,500 

9,110

9,760

295,550

9,554

586,200

Nov.

8,790 

9,600

9,400 

9,000

9,370

10.200 

*9,080

9,560

9,500

9,580

9,080

9,560

8,910 

8,650

8,120

8,640

8,550

8,120

7.780

8,696

8,590

8,620

8,940

9,060

8,840

8,710

9,210

8,680

8,780 

8,700

267,290

8,910

550,200

Dec.

8,900 

9,000

8,900 

8,840

8,980

»8,880 

8,770

8.580

6,526

9,240

8,700

9,070

8,880 

8,950

9,020

8,510

8,750

9,050

8,840

9,000

9,270

8,980

9.550

8,646

8,720

9,280

8,680

8,780

8,540 

8,880

8,910

275,210

8,878

545,900

Jan.

8,650 

9,450

9,740 

9,780

10,000

10.200 

16,166

9,970

9,710

8,940

9,090

9,560

9,620 

9,760

9,440

*9,530

9,520

9,060

9,560

8,620

9,660

8,650

8,780

8,720

8,890

9,100

8.400

9,160

8,580 

8,570

10,200

288,550

9,502

571,900

Feb.

10.700 

10,600

10,000 

8,970

8,400

8,180 

8,000

8,570

8,410

8,090

8,690

8,750

7.610 

6,336

8,500

8,500

8,600

8,800

8,240

8,440

8,500

8,590

8,790

8,530

8,780

8,920

*8,610

8,830

-

245,580

8,699

485,100

Mar.

8,940 

8,920

8.250 

9,030

9,580

9,020 

9,450

10,800

10,900

11,100

12,000

10,500

9,730 

9,500

10,100

10,100

9,780

10,600

10,400

10,600

10,000

10,300

10,200

11,000

* 10, 600

10,700

11,500

12,100

14.100 

14,666

13,600

327,180

10,550

649,000

Apr.

14,600 

14,600

15.200 

15,166

15,200

12,100 

11,400

11,000

10,600

10,100

10,900

11,200

10,600 

10,600

10,600

11,400

11,700

11,900

11,500

11,500

13,100

12,500

12,900

11,500

12,500

12,800

12,900

11,200

10,300 

»_9i6_20

357,120

11,900

708,500

May

8,540 

8,520

8,000 

9)770

9,290

9,740 

8,250

9,160

9,820

9,700

11,500

15,400

16,200 

16,000

18,900

19,500

18,800

18,800

21,800

25,500

24,000

26.100

23,966

23,600

23,500

23,400

22,600

*19,900

17,000 

15, 400

15,500

505,890

16,250

999,500

June

15.600 

13,666

12,800 

11,700

9,570

7,570 

7,190

6,440

6,540

6,660

7,290

7,740

7,870 

7,660

7,870

8,160

7,780

7,500

7,300

7,090

7,020

7,060

*6,680

6,480

6,580

6,490

6,400

6,290

6,560 

6^260

256,950

7,898

470,000

July

6,040 

5.920

6,266 

6,470

6,290

6,040 

6,480

6,560

6,550

6,410

6,480

6,150

6,270 

6,480

*6,540

6,290

6,560

6,640

6,700

6,680

6,650

6,660

6,700

6,760

6,740

6,880

6,840

6,940

6,780 

7.020

6, 980

202,500

6,526

401,500

Aug.

6,940 

7,050

7,260 

6,950

7,130

7,080 

7,040

7,040

7,160

6,900

6,940

7,120

6,880 

6,990

6,980

6,960

7,260

6.760

*S,896

7,120

7,000

6,980

7,160

6,900

7,160

6,980

7,260

7,180

7.420 

7^,326

7,380

219,190

7,071

454,800

Sept.

7,460 

7,600

7,620 

7,400

7,610

7,380 

7,520

7,570

7,640

7,550

7,640

37,500

a8. 300 

87^000

37,900

*6,980

7,636

7,750

7,840

8,020

8,080

8,170

8,180

8,180

7,850

7,900

7,540

7,680

7,740 

7,370

250,580

7,679

457,000

Calendar year 1956: Max 26,200 Mln 5,720 Mean 10,400 Ac-ft 7,555,000

Water year 1956-57' Max 26,100 Mln 5,920 Mean 9,444 Ac-ft 6,857,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for station at King Hill.
MALAD RIVER BASIN 107

Big Wood River near Ketohum, Idaho

Location. Lat 43°48' , long 114°26' , in sec. 4, T. 5 N., R. 17 E., on left bank half a 

mile upstream from North Fork and 8 miles northwest of Ketchum.

Drainage area. 137 sq mi.

Records available. May 1948 to September 1957.

e. Water-stage recorder. Altitude of gage is 6,240 ft (from topographic map). Prior 

o Nov. 7, 1950, staff gage at site 560 ft upstream at different datum.

Average discharge. 9 years, 173 cfs (125,200 acre-ft per year).

Extremes. Maximum discharge during year, 1,200 cfs probably on June 4 (gage height, 

5.55 ft); minimum, 17 cfs Mar. 14 (gage height, 1.83 ft).

1948-57: Maximum discharge, 1,620 cfs May 24, 1956 (gage height, 6.44 ft); minimum recorded, 14 cfs sometime during period Jan. 1-22, 1951 (gage height, 1.52 ft).

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Minor diversions for nonconsumptive uses on Boulder Creek; water 

returned to stream above station. About 97 acre-ft of storage in ponds on Prairie 

Creek; diversion point below station for irrigation.

Rating table, water year 1956-57, except period of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June Z to Sept. 3)

2.0 

2.2 

2.5 

3.0

3.5 

4.0 

5.0 

6.0

328

520

955

1,400

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

75

74

74

74

74

74

72

74

75

86

119

100

88

83

80

78

77

78

80

75

75

74

75

74

74

78

78

62

61

BO

2,419

78.0

0.569

0.66

4,800

Nov.

67

67

70

83

88

85

78

74

74

*74

75

74

74

64

49

83

80

61

 SS 45

58

66

66

62

61

64

61

61

65 

65

2,046

68.2

0.498

0.56

4,060

Dec .

62

64

68

*65

64

59

39

29

47

65

66

71

7T

64

51

65

45

62

47

42

48

41

44

58

59

52

53

58

57 

53

53

1,718

55.4

0.404

0.47

3,410

Jan.

47

48

41

3740"

43

48

52

53

51

52

54

5T

53

52

41

39

43

47

52

51

47

*b49

b49

b4B

b45

b43

b46

b46 

b46

b50

1,467

47.3

0.345

0.40

2,910

Feb.

50

48

45

46

45

44

45

48

47

41

45

45

47

47

44

42

43

42

44

53

47

50

50

46

42

51

51

44

-

1,292

46.1

0.336

0.35

2,560

Mar.

41

40

57

*47

53

45

51

50

50

46

42

51

44

39

52

47

46

46

46

46

47

44

45

45

46

44

44

45

46 

47

48

1,440

46.5

0.339

0.39

2,860

Apr.

46

47

*50

52

57

59

56

58

64

77

78

74

71

83

90

90

93

96

91

91

95

98

121

132

118

112

121

163

244 

332

2,959

98.6

0.720

0.80

5,870

May

393

436

456

*393

574

492

564

592

621

645

672

694

775

734

706

681

694

748

896

757

637

552

492

460

456

500

582

654

718 

*784

802

18,960

612

4.47

5.15

37,610

June

919

al,040

al,100

al,150

alA180

al,180

al,100

al,050

*1,020

901

806

775

754

654

582

508

440

412

132

468

468

448

432

468

480

472

508

528

508 

512

21,255

708

5.17

5.77

42,160

July

512

172

424

382

349

342

321

295

*285

276

267

270

255

244

225

209

202

192

185

185

174

170

165

161

157

152

148

146

146 

142

138

7,587

245

1.79

2.06

15,050

Aug.

132

T3T

127

123

121

121

119

116

114

112

109

107

105

105

102

102

100

98

96

95

*95

95

95

91

90

90

88

90

95 

98

96

5,252

105

0.766

0.88

6,450

Sept.

95

IS

86

83

82

78

77

75

75

77

77

77

75

75

75

74

74

*75

78

77

77

75

72

74

72

71

71

69

69

2,290

76.5

0.557

0.62

4,540

Calendar year 1956: Max 1,510 Min 31 Mean 228 Cfsm 1.66 In. 22.66 Ac-ft 165,500

Water vmuer year yeeii- 1956-57= J.ybo-o7* Max ^ax 1,180 l,ltiO Min mm 29 £3 Mean roean 183 lt}5 Cfsm ^i am 1.34 1.^4 In. j-ii. 18.11 J.B.J.J. Ac-ft H^-J.^ 132,300 j.

Peak discharge (base, 400 cfs). Nov. 4 (4:30 p.m.) 428 cfs (3.77 ft), result of release fr 

snow Jam upstream; May 19 (1 a.m.) 991 cfs (5.03 ft); probably June 4 (time unknown) 1,20 

(5.55 ft}.

'om Ice or 

200 cfs

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for station 

at Hailey and for Warm Springs Creek near Ketchum. 

b Stage-discharge relation affected by ice.
108 MALAD RIVER BASIN

Warm Springs Creek at Guyer Hot Springs, near Ketchum, Idaho

Location. Lab 43°41', long 114°25', in NE^ sec. 15, T. 4 N., R. 17 E., on left bank at 

Guyer Hot Springs, 2 1/8 miles upstream from mouth and 2.2 miles west of Ketchum.

Drainage area. 96 sq mi, approximately.

Records available. November 1940 to September 1957.

Gage. Water-stage recorder. Datum of gage is 5,901.7 ft above mean sea level (riverprofile survey). Prior to Mar. 7, 1942, staff gage at same site and datum.

Average discharge. 16 years (1941-57), 86.2 cfs (62,410 acre-ft per year).

Extremes. Maximum discharge during year, 635 cfs May 19 (gage height, 3.29 ft); minimum, 14 cfs Jan. 26 (gage height, 0.68 ft).

1940-57: Maximum discharge, 883 cfs May 25, 1956 (gage height, 4.02 ft); minimum, 

6 cfs Feb. 29, 1944 (gage height, 0.55 ft), result of ice jam upstream; minimum daily, 

17 cfs Dec. 17, 1946.

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

fair. Diversions above station for irrigation of about 200 acres. Small diversions 

from Guyer Hot Springs for recreational purposes bypasses station.

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, in cubic feet per second)

0.8 

1.0 

1.2 

1.4

1.8 

2.3 

3.0 

4.0

171

301

536

876

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

TotaJ

Mean

Ac-ft

Oct.

39

39

38

39

38

37

37

38

44

44

58

52

45

42

41

41

41

41

42

40

40

39

40

39

39

41

44

34

34

42 

42

1,270

41.0

2,520

Nov.

37

37

37

40

42

42

41

41

41

*41

42

42

42

37

32

40

41

38

29

35

38

38

38

38

37

37

37

36

37

36

1,149

38.3

2,280

Dec.

36

36

36

*36

36

36

30

25

3S

3_8

38

38

36

35

33

36

29

35

31

32

33

26

 30

36

34

32

33

35

34

33 

32

1,046

33.7

2,070

Calendar year 1956: Max 835

Jan.

31

32

28

27

27

27

30

35

37

31

32

33

33

33

31

28

27

28

31

30

30

*34

32

31

31

25

ZS

29

27

27 

30

928

29.9

1,840

Feb.

30

29

29

29

28

28

29

29

78" 27

28

28

28

27

27

27

27

27

28

29

29

31

32

33

33

33

33

33

819

29.2

1,620

Min 23

Mar.

30

30

31

*31

32

30

31

31

32

31

29

33

29

27

37

31

30

30

31

33

34

33

31

33

34

33

34

35

36

37 

38

992

32.0

1,970

Apr.

37

37

*41

44

48

54

51

52

58

73

76

70

68

79

83

84

83

31

76

76

76

74

90

98

86

81

83

120

160

180

2,319

77.3

4,600

May

210

220

230

*207

184

243

307

320

346

366

407

393

380

373

376

366

359

403

584

497

393

327

286

257

249

268

301

336

373

*420 

448

10,424

336

20,680

June

492

522

553

567

557J

539

482

431

390

359

311

295

277

251

230

210

186

178

175

180

175

167

160

156

154

150

150

150

148

144

8,742

291

17,340

July

140

m

126

120

117

109

104

*102

97

95

91

90

88

86

83

79

78

76

74

73

72

68

67

66

64

61

60

60

61

60 

58

2,659

85.8

5,270

Aug.

57

5T

54

53

53

52

52

51

50

49

48

46

45

45

45

44

44

43

42

42

*41

47

45

42

42

41

41

42

47

49 

51

1,454

46.9

2,880

Sept.

49

IE

45

44

44

42

41

40

41

41

41

40

40

39

37

34

36

*40

42

41

40

39

39

39

38

38

36

33

37

39

1,201

40.0

2,380

Mean 117 Ac -ft 84,800

Water year 1956-57: Max 584 Min 25 Mean 90.4 Ac-ft 65,450

Peak discharge (base, 300 cfs).--May 19 (2 to 3 a.m.) 635 cfs (3.29 ft); June 4 (11 p.m.) 587 cfs 

(3.15 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 27-30, Jan. 11-21, Jan. 31 to Mar. 3, Apr. 24, Apr. 28 to May 3, 

Aug. 4-20; discharge estimated on basis of recorded range in stage, weather records, and records for 

nearby streams in Malad River basin.
MALAD RIVER BASIN 109

Big Wood Slough at Hailey, Idaho

Location. Lat 43°31'00", long 114°19'30", In sec. 9, T. 2 N., R. 18 E., on left bank 

40 ft upstream from bridge on State Highway 22, an eighth of a mile northeast of Big 

Wood River, and an eighth of a mile southwest of Hailey.

Drainage area. See Big Wood River at Hailey on following page. 

Records available. June 1915 to September 1957.

Gage 

Ti

;e_. Water-stage recorder. Datum of gage is 5,301.17 ft above mean sea level, prelim- 

.nary. Prior to Apr. 12, 1936, staff gages at or near highway bridge, at same datum.

Extremes. Maximum discharge during year, 68 cfs May 1, July 24; maximum gage height, 

3.46 ft Jan. 27 (ice jam); minimum discharge, 1.8 cfs Feb. 7 (gage height, 1.48 ft).

1915-57: Maximum discharge observed, 419 cfs June 6, 1921, from rating curve 

extended above 280 cfs; maximum gage height, 5.55 ft (top of ice in well) Jan. 20-23, 

1937; no flow at times in several years.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow controlled at inoperative powerplant half a mile upstream to 

meet the requirements of irrigation diversion and sewage dilution. Big Wood Slough 

is a natural channel of Big Wood River and its discharge plus the discharge of Big 

Wood River at Hailey (see following page) is total discharge of river at this point.

Cooperation. Water-stage recorder inspected by employees of Water District No. 7 AB.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

15 9.3

15

14

16

14

14

14

15

15

23

26

22

20

18

17

17

17

17

17

17

18

18

17

17

19

20

18

16

21

19

535.3

17.3

1,060

Nov.

a!7

a!6

a!5

a!6

a!8

a20

a25

a!9

a!9

a!9

*20

20

20

18

15

17

20

17

b!2

blO

11

12

14

14

14

14

14

14

14

14

483

16.1

958

Dec.

14

14

14

*15

15

15

bll

b9.0

b9.5

12

14

15

16

T4

13

14

12

12

13

11

blO

b9.5

b8.5 10~

bll

bll

bll

12

12

11

11

379.5

12.2

753

Calendar year 1956: Max 72

Jan.

bll

T.B

b9.0

b8.5

b8.0

b8.0

b8.5

b9.5

b9.5

b9.0

b9.5

blO

10

10

10

b9.0

b8.0

b7.5

b7.5

b8.0

b7.5

*b7.5

b8.0

bS.O

b8.0

b7.5

b7.0

bT75

b7.5

b7.5

b8.5

264.8

8.54

525

Feb.

b9.0

b9.0

b9.0

b9.0

b9.0

b8.5

b9.0

9.5

9.0

b8 .0

b8.5

8.7

9.0

8.7

8.4

8.1

8.1

8.1

8.4

9.5

9.3

9.5

11

11

12

12

12

11

-

262.3

9.37

520

Mar.

*10

T5

12

11

12

10

11

11

12

13

12

13

12

blO

12

13

12

11

12

12

13

12

12

14

16

14

14

15

16

17

18

392

12.6

778

Apr.

37

16

*T7

18

19

24

23

24

25

27

30

29

28

30

33

33

33

32

35

36

38

37

40

44

42

40

39

44

53

63,

967

32.2

1,920

May

58

53

53

*50

46

48

50

44

42

42

41

41

42

40

40

40

38

38

27

21

18

17

16

15

23

42

44

45

*47

49

50

1,217

39.3

2,410

June

51

53

54

54

52

52

49

40

*35

32

30

40

38

32

28

26

3T

28

28

31

31

29

30

37

39

40

41

46

46

49

1,172

39.1

2,320

July

54

53

46

41

38

38

36

32

*31

29

28

27

26

25

23

20

18

16

16

14

14

13

10

42

£3

58

56

53

52

49

45

1,066

34.4

2,110

Aug.

41

5ff

38

37

36

35

36

31

26

25

24

23

22

20

18

17

15

13

12

 11

10

12

12

10

9.9

10

10

16

23

26

29

685.9

22.1

1,360

Sept.

27

24

22

20

20

19

18

17

17

17

17

16

15

15

15

14

14

*14

15

16

15

14

13

13

12

12

12

11

11

11

476

15.9

944

Min 5.0 Mean 19.1 Ac-i't 13.860

Water year 1956-57: Max 63 Mln 7.0 Mean 21.6 Ac-ft 15^660

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Big Wood 

River at Hailey.

b Stage-discharge relation affected by Ice.
110 MALAD RIVER BASIN

Big Wood River at Hailey, Idaho

Location. Lat 43°31', long 114°20', In SWi sec. 9, T. 2 N., R. 18 E., on left bank 35 ft 

downstream from bridge on State Highway 22, a quarter of a mile southwest of Halley, 

and three-eighths of a mile upstream from Croy Creek.

Drainage area. 640 sq ml, approximately (total area above river and slough stations).

Records available. July to December 1889, June 1915 to September 1957. Published as 

Wood River at Halley In 1889.

Gage. Water-stage recorder. Datum of gage Is 5,298.00 ft above *iean sea level, preliminary. Prior to Nov. 16, 1934, staff gages at bridge 35 ft upstream at different 

datums.

Average discharge. Average combined discharge of Big Wood River and Big Wood Slough, 

42 years, 427 cfs (309,100 acre-ft per year).

Extremes.--Maximum discharge during year, 3,930 cfs June 5 (gage height, 5.69 ft); minlmum, 110 cfs Jan. 27 (gage height, 0.40 ft), but may have been less during period of 

ice effect.

1915-57 (river only): Maximum discharge, 4,640 cfs May 24, 1956 (gage height, 

6.62 ft); maximum gage height, 8.66 ft June 12, 1921, present datum; practically no 

flow Sept. 15-23, Nov. 20, 22, 23, 1931, Oct. 25, 1937.

1915-57 (combined): Maximum daily discharge, 4,500 cfs June 6, 7, 1938; minimum 

daily, 15 cfs Dec. 27, 1921.

Remarks.--Records good. Water diverted around station through Big Wood Slough (see preceding page). Total flow of river at Hailey (combined flow of Big Wood River and Big 

Wood Slough) is given on following page. Diversions for irrigation of about 10,300 

acres above station. Plow bypasses station for Irrigation of about 1,800 acres. 

Storage above station is negligible.

Cooperation.--Water-stage recorder inspected by employees of Water District No. 7 AB.

Rstlng tables, water year 1956-57, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Apr. 1-5)

Oct. 1 to Mar. 31 Apr. 1 to Sept. 30

0.5

.7

1.0

122

154

217

0.7 

1.0 

1.5 

2.0 

2.5

143

210

365

575

840

3.0 

4.0 

5.0 

5.6

1,150

1,950

3,010

3,800

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

210

212

208

208

210

208

206 2C6~

215

220

274

2sS~ 292

240

230

227

225

222

233

227

233

227

230

225

225

230

240

217

206

233

225

7,022

227

13,930

Nov.

203

192

190

201

212

3220

a250~

3215

3215

*212

215

215

220

208

177

199

203

186

162

149

154

164

171

173

173

173

171

169

173

175

5,710

190

11,330

Dec.

173

171

175

*175

179

179

154

b!23

T3f

162

173

177

184

T3T

169

175

164

165

164

156

156

144

b!34

152

162

158

158

164

162

160

160

5,041

163

10,000

Jsn.

156

154

147

b!34

b!32

b!30

b!34

151

b!49

b!45

152

154

T58" 158

154

142

b!30

b!32

b!37

b!50

b!45

*b!45

151

b!50

149

b!35

b!25

bT3"5

b!30

b!30

149

4,443

143

8,810

Feb.

152

151

144

144

146

139

140

147

144

156

139

140

142

142

140

137

139

137

139

147

146

147

158

162

162

164

ISO" 165

4,109

147

8,150

Mar.

*151

147

158

154

162

151

152

154

162

162

156

165

152

T5o" 146

160

158

152

156

160

167

162

160

167

171

165

165

171

175

184

196

5,001

161

9,920

Apr.

190

188

*S07J

208

221

246

237

240

257

288

307

300

297

320

348

351

354

358

358

354

373

365

389

445

417

393

381

425

570

714

10,094

336

20,020

May

834

1572"

1,060

*966

870

1,010

1,280

1,470

1,460

1,570

1,620

1,670

*1,760

1,760

1,690

1,650

1,680

1,860

2,820

2,500

2,030

1,740

1,560

1,390

1,330

1,380

1,590

1,730

*1,940

2,130

2,300

49,622

1,601

98,420

June

2,400

2,830

3,310

3,490

3,560

5.700

3,490

*3,020

2,740

2,580

2,020

1,950

1,870

1,650

1,420

1,260

1,120

1,040

1,040

1,090

1,090

1,040

1,050

1,140

1,160

1,140

1,160

1,500

1,270

1,320

57,010

1,900

113,100

July

1,540

1,230

1,080

1,020

984

948

918

894

*829

824

812

780

746

719

686

635

610

585

570

562

530

508

490

425

377

565

558

351

344

540

525

21,185

683

42,020

Aug.

3To" 314

307

504

300

297

291

282

278

272

266

265

260

254

252

246

240

232

229

221

*224

229

254

226

224

218

218

210

52T

237

246

7,905

255

15,680

Sept.

240 2"2T

213

208

202

198

195

190

190

190

190

185

185

183

181

176

174

*174

185

185

181

178

174

172

165

163

159

155

153 

IB7

5,517

184

10,940

Calendar year 1956: Max 4,280 Mln 105 Mean 641 Ac-ft 465,500

Water year 1956-57: Max 3,700 Mln 123 Mean 500 Ac-ft 362,300

* Discharge measurement made on this day. 

b Stage-discharge relation sffected by Ice.
MALAD RIVER BASIN 111

Wood River at Hailey, Idaho Continued

Combined discharge, In cubic feet per second, of Big Wood River and Big Wood Slough at 

Hailey, Idaho, water year October 1956 to September 1957

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

Total

Mean

Ao-ft

Oct.

219 

257

223

222

226

222

220

220

230

235

297

?5o~ 318

260

248

244

242

239

250

244

250

245

248

242

242

249

260

235

222

254

244

7,557

244

14,990

Nov.

220 

208

205

217

230

240

245

234

234

231

235

235

240

226

192

216

223

203

174

159

165

176

185

187

187

187

185

183

187

189

6,193

206

12,280

Dec.

187 

185

189

190

194

194

165

132

T4T

174

187

192

200

T5K

182

189

176

177

177

167

166

154

142

162

173

169

169

176

174

171

171

5,421

175

10,750

Jan.

167 

164

156

142

140

138

142

160

158

154

162

164

168

T5S

164

151

138

140

144

158

152

152

159

158

157

142

132

T32

138

138

158

4,706

152

9,330

Feb.

161 

160

153

153

155

148

149

156

153

144

148

149

151

151

148

145

147

145

147

156

155

156

169

173

174

176

177

T7T

4,370

156

8,670

Mar.

161 

157

170

165

174

161

163

165

174

175

168

178

164

156

TTC

173

170

163

168

172

180

174

172

181

187

179

179

186

191

201

214

5,393

174

10,700

Apr.

207 

204 OT

226

240

270

260

264

282

315

337

329

325

350

381

384

387

390

393

390

411

402

429

489

459

433

420

469.

623

775

11,061

369

21,940

May

1,?52"0" 892 

1,110

1,020

916

1,060

1,330

1,510

1,500

1,610

1,660

1,710

1,800

1,800

1,730

1,690

1,720

1,900

2.850

2,520

2,050

1,760

1,580

1,400

1,350

1,420

1,630

1,780

1,990

2,180

2,350

50,838

1,640

100,800

June

2,450 

2,880

3,360

3,540

3,610

3.750

3,540

3,060

2,780

2,410

2,050

1,990

1,910

1,660

1,450

1,290

1,150

1,070

1,070

1,120

1,120

1,070

1.060

1,180

1,200

1,180

1,200

1,350

1,320

1,370

58,190

1,940

115,400

July

1.590 

1,280

1,130

1,060

1,020

986

954

926

860

853

840

807

772

744

709

655

628

601

586

576

544

521

500

467

440

423

414

404

396

389

368

22,243

718

44,120

Aug.

355

34TJ

345

341

336

332

327

313

304

297

290

286

282

274

270

263

255

245

241

232

234

241

246

236

234

228

228

226

m

263

275

8,591

277

17,040

Sept.

267 

2IF

235

228

222

217

213

207

207

207

207

201

200

198

196

190

188

188

198

199

196

192

187

185

177

175

171

166

164

m

5,993

200

11,890

Calendar year 1956: Max 4,340 Min 112 Mean 660 Ac-ft 479,400

Water year 1956-57: Max 3,750 Min 132 Mean 522 Ac-ft 377,900
112 MALAD RIVER BASIN

Big Wood River near Bellevue, Idaho

Location.--Lat 43°19'30", long 114°19'30", in SE^NW^ sec. 21, T. IS., R. 18 E., on right 

bank 2f miles upstream from flow line of Magic Reservoir, 3f miles upstream from Camas 

Creek, and 10 miles southwest of Bellevue.

Drainage area.--823 sq mi.

Records available. July 1911 to September 1957 (no winter records prior to 1943 except 

1916, 1921-22, 1940-41).

Gage. Water-stage recorder. Altitude of gage is 4,820 ft (by barometer). Prior to 

July 8, 1921, at site 1 1/8 miles downstream at different datum. July 8, 1921, to 

Oct. 5, 1954, at site three-quarters of a mile downstream at different datum.

Average discharge.--19 years (1915-16, 1921-22, 1939-41, 1942-57), 295 cfs (213,600 acreft per year).

Extremes. Maximum discharge during year, 3,360 cfs June 5; maximum gage height, 5.32 ft 

May 19; minimum daily discharge, 45 cfs Feb. 10-12, 20; minimum gage height observed. 

2.06 ft Feb. 20.

1911-57: Maximum discharge, 4,130 cfs May 25, 1956 (gage height, 6.00 ft); minimum recorded, 7 cfs Apr. 14, 1932 (gage height, 1.10 ft, site and datum then in use).

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

Diversions for irrigation of about 36,400 acres above station. Storage above station 

is negligible.

Cooperation. Water-stage recorder inspected by employees of Water District No. 7 AB.

Rating tables, water year 1956-57 (gage height. In feet, and discharge,

In cubic feet per second)

(Shifting-control method used Nov. 36 to Jan. 10, Apr. 17 to 

May 18, June 3-7)

3.1 

3.3

2.9

Oct. 1 to June 7

34 3.1

61 3.5

100 4.0

153 4.5

233 5.0

330 5.5

June 8 to Sept. 30

440

710

1,150

1,710

3,470

3,550

3.3 

3.6

3.0

133

351

430

680

3.5 

4.0 

4.5 

4.9

1,060

1,550

3,130

3,660

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

30

21

32

23

34

25

26

37

28

29

30 

31

TotaJ

Mean

Ac-ft

Oct.

113

107

105

105

105

103

100

Too

100

110

130

171

178

165

155

146

141

146

149

149

149

146

146

149

152

174

188 TTT

158

163 

184

4,358

141

8,640

Nov.

171

TM

163

158

138

138

138

135

135

135

132

*133

133

130

134

119

130

119

83

77

75

77

79

79

81

81

81

81

77

66.

3,433

114

6,810

Dec.

65

63

*63

63

63

63

61

b60

60

58

63

68

96

79

74

74

74

73

74

74

73

68

61

60

60

58

56

55

56

56 

58

3,037

65.4

4,030

Jan.

60

61

63

b56

55

55

53

50

50

50

53

54

53

50

50

50

50

50

53

56

56

55

*54

53

51

50

50

50

50

50 

50

1,633

53.7

3,240

Feb.

50

50

50

50

50

50

50

50

50

i5-

45

45

50

60

55

53

50

49

48

45

47

50

60

100

300

300

350

200

3,301

83.3

4,560

Mar.

160 *T35-

130

100

85

81

96

133

113

103

96

94

90

87

87

96

100

100

103

105

105

98

96

94

98

100

98

98

103

105 

107

3,181

103

6,310

Apr.

110

105

103

*105

110

119

119

117

117

133

141

155

163

171

199

314

332

231

333

344

349

318

333

354

367

354

336

344

330

500

5,851

195

11,610

May

647

766

846

798

703

*774

934

1,040

1,110

1,180

1,320

1,420

1,540

1,550

1,530

1,510

1,480

1,540

3,380

3.430

1,950

1,710

1,470

1,300

1,190

1,310

1,340

1,430

1,570

*1,640 

1,800

43,098

1,358

June

1,930

3,240

3,560

3,880

3,060

3,990

3,640

*3,330

3,110

1,900

1,530

1,310

1,180

1,010

884

799

701

596

538

516

533

504

486

533

568

575

610

680

757

836

39,734

1,334

83,500 78,810

July

868

84T

757

687

638

596

561

538

456

438

*396

360

344

316

300

351

336

341

332

307

180

159

133

116

*TT9

119

119

133

133

119 

116

10,659

344

31,140

Aug.

116

113

113

110

107

107

107

107

104

104

107

104

104

101

98

98

98

101

107

107

107

*110

110

98

90

90

95

95

133

148 

155

3,333

108

6,610

Sept.

126

TTf

107

101

95

90

87

80

78

78

80

*83

85

95

93

93

93

*90

90

87

95

93

95

98

95

90

85

80

76

7S

2,723

90.8

5,400

Calendar year 1956: Max 3,600 Mln 33 Mean 467 Ac-i't 339,300

Water year 1956-57: Max 3,060 Mln 45 Mean 333 Ac-ft 340,600

* Discharge measurement made on this day.

Note.--No gage-height record Jan. 5-33, Jan. 33 to Feb. 17, Feb. 31 to Mar. 1, Mar. 3, 4; discharge estimated on basis of weather records, inflow-outflow study of Magic Reservoir, and records 

for nearby streams.
MALAD RIVER BASIN 

Camas Creek near Blaine, Idaho

113

Location. Lat 43°20', long 114°33' , in sec. 15, T. IS., R. 16 E., on left bank a quarter of a mile north of Macon siding on Hill City branch of Oregon Short Line Railroad, 

three-eighths of a mile downstream from Willow Creek, 2£ miles upstream from backwater of Magic Reservoir, and 4 miles southeast of Blaine.

Drainage area. 648 sq mi.

Records available.--May 1912 to September 1921 and April 1923 to October 1925 (fragmentary), March 1926 to September 1944 (no winter records). October 1944 to September 

1957.

Gage. Water-stage recorder. Altitude of gage is 4,870 ft (by barometer). 

Average discharge.--13 years (1944-57), 187 cfs (135,400 acre-ft per year).

Extremes.--Maximum discharge during year, 2,570 cfs Mar. 31 (gage height, 8.73 ft); minimum, 3.2 cfs Aug. 21, 24.

1912-57: Maximum discharge recorded, 9,780 cfs Apr. 8, 1943; maximum gage height, 

15.48 ft about Apr. 18, 1938, from floodmark; minimum discharge recorded, 1.5 cfs 

Aug. 29, 1940.

Remarks. Records excellent except those below about 10 cfs, which are good, and those 

for periods of no gage-height record or ice effect, which are poor. Water diverted 

for irrigation of about 9,300 acres above station. Plow regulated by Twin Lakes Reservoir on Lake Creek (capacity, 31,240 acre-ft) and three minor reservoirs (combined 

capacity, 580 acre-ft).

Cooperation. Occasional inspections of recorder furnished by employees of Water District 

No. 7 AB.

Revisions. WSP 1217: Drainage area.

Rating table, water year 1956-57, except period of Ice effect (gage 

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used May 19 to June 11, Aug. 19-24)

1.0 

1.2 

1.5 

1.8

2.9

6.8

32

2.1 

2.5 

3.0 

4.0

54

96

172

409

5.0 

6.0 

7.0 

9.0

725

1,120

1,600

2,790

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

39

30

31

Total

Mean

Ac-ft

Oct.

4.4

T7I

4.4

4.4

4.8

5.3

5.0

5.0

5.3

5.7

9.5

14

12

11

10

10

10

11

10

10

9.8

9.8

10

1011

13

17

16

12

14

*16

294.8

9.51

585

Nov.

15 

12

12

13

12

14

14

14

14

14

15

15

17

16

14

14

18

16

13

12

12

13

14

14

14

16

16

19

19

20

441

14.7

875

Dec.

20 

20

*21

21

21

21

18

17

19

22

30

55

326

242

213

161

104

70

50

40

35

30

28

26

25

23

22

21

20

19

20

1,760

56.8

3,490

Jan.

21 

2T

21

20

19

18

18

18

18

18

19

20

20

19

18

17

17

17

17

20

19

18

*17

16

16

16

16

16

16

16

16

558

18.0

1,110

Feb.

17 

17

17

17

17

17

17

17

17

15

16

18

20

23

20

19

18

17

17

18

30

150

500

800

1,600

1,400

bl.OOO

b900

-

6,734

240

13,360

Calendar year 1956: Max 4,080 Mln 3.1

Mar.

b820 

*b820

bl.OOO

1,610

1,370

1,040

1,010

1,130

1,120

870

732

760

546

379

401

431

465

495

567

697

806

704

599

534

638

784

910

1,070

1,290

1,700

2,250

27,548

889

54,640

Apr.

1.950 

,450

,430

* ,420

,350

,500

,460

,210

,100

830

746

708

686

669

564

552

468

417

437

431

412

398

398

385

359

320

292

282

292

328

22,824

761

45,270

May

364 

396

409

401

369

353

*36l

379

412

443

504

596

599

567

558

576

537

558

982

1 . 080

966

806

736

718

655

549

483

448

440

*522

516

17,283

558

34,280

June

501 

462

437

420

412

406

382

346

300

285

247

213

182

168

154

148

135

105

101

89

82

78

71

62

56

46

42

42

42

42

6,056

202

12,010

July

42

40

38

35

35

28

23

21

19

18

17

16

*15

17

16

15

11

10

8.7

12

12

10

9.8

9.5

8.7

8.7

9.0

9 8

9.0

8.2 a o' 

y . o

541.2

17.5

1,070

Aug.

9.8

S7T

.9

.1

 1

.1

.4

.1

.1

.1

.5

.0

.4

.1

.1

3.9

3.8

3.8

3.4

3.4

*3.4

3.4

3.4

^2

3.4

3.4

3.4

3.4

3.6

3.8

3.9

\51.8

4.90

301

Sept.

3.9 

3.9

3.8

3.9

4.1

3.9

3.8

3.8

3.8

3 9

3.9

3.9

3.9

3.9

4.1

4.1

4.3

4.3

*4.3

4.3

4.1

4.1

4.1

4.1

4.1

4.4

4.4

4.6

4.8

TT8

123.3

4.11

245

Mean 282 Ac-ft 204,500

Water year 1956-57: Max 2,250 Mln 3.2 Mean 231 Ac-ft 167,200

Peak discharge (base, 500 cfs). Dec. 13 (2 p.m.) 774 cfs (5.14 ft); about Feb. 25 (time and discharge unknown): Mar. 4 (7 p.m.) 2,320 cfs (8.26 ft): Mar. 21 (12:30 a.m.) 902 cfs (5.48 ft); 

Mar. 31 (8 p.m.) 2,570 cfs (8.73 ft); May 20 (7 p.m.) 1,130 cfs (6.15 ft); May 30 (6 p.m.) 

704 cfs (5.09 ft).__________________________________________________________^

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Nov. 16, 20-22, Dec. 7-11, Dec. 18 to Jan. 22, 

July 12; discharge estimated on basis of weather records, inflow-outflow studii 

voir, and records for nearby streams.

to Jan. 22, Jan. 24 to Feb. 26, 

- ".es for Magic Reser-
114 MALAD RIVER BASIN

Magic Reservoir near Richfield, Idaho

Location.--Lat 43°15' , long 114°22 I , in NE^-SE^ sec. 18, T. 2 S., R. 18 E. , at dam on Big 

Wood River, 18 miles northwest of Richfield.

Drainage area. 1,600 sq mi, approximately.

Records available.--February to April 1909 (gage heights only), April 1909 to September 

1957.

Gage.--Staff gage read once or twice daily. Datum of gage is 4,800 ft above datum of 

Idaho Irrigation Co., which is reported to be about 137 ft below mean sea level. Prior 

to Apr. 1, 1937, tape or staff gages at dam. Datum of gages prior to Oct. 1, 1942, was 

4,800 ft lower.

Extremes. Maximum contents observed during year, 191,900 acre-ft May 19-21 (gage height, 

135.1 ft); minimum observed, 86,170 acre-ft Sept. 30 (gage height, 99.3 ft).

1909-57: Maximum contents observed, 194,200 acre-ft Apr. 30, 1951 (gage height, 

135.7 ft; no storage for several days in 1909, 1919-20, 1924, 1928, 1935.

Remarks. Reservoir is formed by earth- and rock-fill dam, completed in 1909, and raised 

5~TT in 1917. Capacity, 191,500 acre-ft between gage heights 21.4 (2.9 ft above bottom 

of outlet pipe) and 135.0 ft (top of 5-foot flashboards). 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 including bank storage. Gage read in,morning 

except during irrigation season when it was read morning and evening; contents computed from morning reading.

Cooperation. Gage readings and yield table furnished by employees of Water District 

No. 7 AB.

Revisions. WSP 1217: Drainage area.

Capacity table, water year 1956-57 (gage height, in feet, 

and usable contents, in acre-feet)

95.0

100.0

110

76,940

87,730

111,900

120

130

135.5

139,500

172,600

193,500

Usable contents, in acre-feet, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

ZZ

Z3

24

25

26

27

28

29

30 

31

ill

Oct.

103,000

103,300

102,800

103 , 500

104 , 000

140,300

104,300

104,500

104 , 500

104,800

105,300

105,500

105,800

106,300

106,500

107 , 000

107,300

107,500

107,800

108,300

108,300

108,800

109,300

109,600

109,800

110,100

110,600

111,100

111,600

112,100 

112,600

110.3 

+9,600

Nov.

112,900

113,200

113,400

113,700

114,200

114,500

115,000

115,300

115,800

116,000

116,600

116,600

116,800

116,600

116,300

115,800

115,500

115,800

llff, 000

116,300

116,600

116,800

117,100

117,400

117,400

117,600

117,900

118,200

118,400

118,700

112.6 

+6,100

Dec.

119,000

119,000

119,200

119,200

119,200

119,500

119,500

119,500

119,800

120,000

120,300

120,600

120,900

121,400

122,200

123,000

123,600

123,800

124,400

124,900

125,200

125,500

125,800

126,000

126,000

126,300

126,300

126,300

126,600

126,600 

126,600

115.5 

+7,900

Jan.

126,900

126,900

127,200

127,200

127,400

127,400

127,700

127,700

128,000

128,000

128,300

128,500

128,500

128,800

128,800

129,100

129,100

129,400

129,400

129,700

129,700

129,900

130,200

130,500

130,800

130,800

130,800

131,100

131,100

131,100 

131,100

117.1 

+4,500

Feb.

131,400

131,600

131,600

131,900

132,200

132,200

132,500

132,500

132,800

132,800

133,100

133,100

133,300

133,600

133,600

133,900

133,900

134,200

134,200

134,200

134,500

134,500

134,800

136,000

138,000

142,500

146,600

150,400

-

123.5 

+19,300

Mar.

153,000

-

157,600

160,300

163,000

166,500

169,400

171,900

175,200

174,100

173,700

173,000

172,200

171,200

171,200

171,500

172,200

173,000

173,300

173,700

174,400

174,400

175,200

174,800

174,800

174,800

175,200

176,300

177,400

179,200 

ISljjJOO

132.5 

+31,500

Apr.

185,300

186,100

186,100

186,100

186,100

186,400

187,600

188,000

187,600

187,200

186,800

186,800

186,800

187,600

188,000

188,800

189,200

189,500

189,900

189,900

190,300

190,300

190,300

189,900

189,900

189,900

189,900

189,900

189,900

189,900

134.6 

+8,000

May

190j 300

190,700

190,700

190, 700

190,700

190,700

190,700

190,700

191,100

191,100

191,100

191,000

190,700

190,300

190,300

190,700

190,700

190,700

191,100

191,900

191,900

191,500

190,700

190,300

190,700

190,700

190,700

190,700

190,700

190,700 

191,100

134.9 

+1,200

June

191,100

191,500

191,500

191,500

191,500

191,500

191,100

191,100

190,700

190,700

190,300

190,300

190,300

190,300

189,500

189,500

189,500

189,500

189,200

188,800

188,400

188,000

187,600

187,200

186,800

186,400

186,400

186,100

185,700

186,100

133.6 

-5,000

July

187^200

186,400

186,400

186,400

186,400

185,700

185,300

184 , 900

184,500

183,800

182,600

181,900

180,700

179,600

178,500

177,000

175,500

174,100

172,600

171,200

169,700

168,300

166,900

165,500

163,700

162,400

160,600

159,300

157,900

156,300 

154 , 900

124.9 

-31,200

Aug.

153^300

152,000

150,700

149,100

147,500

145,600

144,100

142,800

141,600

140,100

138,600

136,800

135,700

134,200

132,800

131,600

130,200

129,100

127,700

126,600

125,200

124,400

123,300

121,900

120,900

119,800

118,400

117,400

116,000

115,000 

113,900

110.8 

-41,000

Sept.

112,900

111,900

110,600

109,800

108,800

108,000

107,000

106,000

105 , 000

104,000

103,000

101,800

101,100

100,300

99,370

98,410

97,460

96,500

95,560

94,850

93,920

93 , 220

91,830

90,910

90,220

89,540

88,860

87,960

87,060

86,400

99.4 

-27,500

Calendar year 1956.................... t +74,500

Water year 1956-57.................... t -16,600

t Gage height, in feet, at end of month. 

t Change in contents, in acre-feet.
MALAD RIVER BASIN 115

Big Wood River below Magic Dam, near Riohfield, Idaho

Location. Lat 43°14', long 114°22' , in sec. 18, T. 2 S., R. 18 E., on right bank half a 

mile downstream from Magic Dam and 18 miles northwest of Richfield.

Drainage area. 1,600 sq mi, approximately.

Records available.--April 1911 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 4,665 ft (by barometer).

Average discharge.--45 years (1912-57), 431 cfs (312,000 acre-ft per year).

Extremes. Maximum discharge during year, 3,680 cfs May 20 (gage height, 7.88 ft); minimum, 7.5 cfs Nov. 18.

1911-57: Maximum discharge, 10,000 cfs Apr. 26, 1952 (gage height, 15.68 ft, from 

floodmark); no flow Feb. 3, 1915.

Remarks.--Records excellent except those below 20 cfs, which are good. Water diverted 

for "irrigation of about 47,100 acres above station. Plow regulated by Magic Reservoir (see preceding page), Twin Lakes Reservoir on tributary of Camas Creek (capacity, 

31,240 acre-ft), and minor reservoirs having combined capacity of about 680 acre-ft.

Cooperation. Water-stage recorder inspected by employees of Water District No. 7 AB.

Rating table, water year 1956-57 (gage height, In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used May 20 to June 17)

1.9

2.0 

2.3 

2.7 

3.0

41

95

156

3.5 

4.0 

5.0 

7.0 

8.0

326

571

1,220

2,780

3,650

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

13

13

14

15

15

15

15

15

15

15

15

14

14

13

13

13

13

13

13

13

12

11

11

11

11

11

10

To

10

11

10

397

12.8

787

Nov.

10

10

10

10

10

9.6

10

10

10

10

10 *11

10

392

451

426

132

8.9

8.9

8.9

8.9

8.9

8.2

172

8.2

8.9

8.9

8.9

8.9

9.6

1,625.9

54.2

3,220

Dec.

9.6

9.6

9.6

9.6

no

9.6

8.9

879

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

a. 9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

9.6

281.9

9.09

559

Jan.

9.6

9.6

9.6

9.6

9.6

9.6

9.6

10

9.6

9.6

9.6

9.6

10

9.6

9.6

9.6

8.9

8T9

9.6

10

9.6

9.6

9.6

*9.6

9.6

9.6

13

9.6

9.6

9 . 6

300.8

9.70

597

Feb.

10~9.6

10

10

9.6

9.6

10

10

9.6

9.6

9.6

9.6

9.6

10

10

9.6

10

10

9.6

10

10

10

12

11

12

12

12

12

-

287.0

10.2

569

Mar.

11

T2

12

13

*13

12

13

14

816

1.470

1,360

1,290

1,140

559

262

262

262

339

481

533

633

709

715

715

715

668

605

605

610

616

644

16, 109

520

31,950

Apr.

1,210

1.580

1,560

 1,550

1,300

1,200

1,400

1,400

1,350

1,180

1,040

840

537

533

539

460 4l6"

544

616

656

685

685

703

668

621

605

593

571

577

633

26,322

877

52,210

May

751

1,010

1,210

1,230

1,190

*1,150

1,170

1,360

1,590

1,710

1,960

2,230

2,340

2,090

2,140

2,200

2,200

2,200

2,710

5.610

3,460

5,200

2,760

2,300

2,270

2,170

2,130

2,120

2,120

2,210

*2,580

65,191

2,038

125,500

June

2,560

2,670

2,850

5,000

5,160

5.240

5,050

*2,890

2,580

2,400

2,110

1,680

1,540

1,510

1,280

1,020

837

879

879

852

826

807

795

776

757

764

764

801

820

820

48,897

1,630

96,990

July

820

826

833

833

826

846

852

846

866

920

940

 961

975

975

975

996

9l9

989

982

975

975

947

926

926

926

926

926

920

913

913

906

28,429

917

56,390

Aug.

899

892

886

879

872

852

840

840

840

835

855

826

764

807

801

801

782

770

757

745

721

*709

709

709

703

703

697

697

685

65_6

24,187

780

47,970

Sept.

659

621

610

588

577

577

577

577

577

577

577

577

577

571

571

571

566

566

566

*560

544

522

522

522

522

522

522

522

522

248

16,590

555

52,910

Calendar year 1956: Max 4,310 Mln 4.6 Mean 706 Ac-ft 512,400

Water year 1956-57: Max 3,610 Mln 8.2 Mean 621 Ac-ft 449,500

Discharge measurement made on this day.
116 MALAD RIVER BASIN

Little Wood River at Campbell Ranch, near Carey, Idaho

Location. Lat 43°28', long 114°03', In SW£NW£ sec. 35, T. 2 N. , R. 20 E., on left bank 

at Campbell Ranch, above flow line of Little Wood Reservoir, If miles downstream from 

High Five Creek, 2j miles downstream from Muldoon Creek, 11 miles east of Bellevue, 

and 12 miles northwest of Carey.

Drainage area. 267 sq mi.

Records available. February 1920 to September 1926 (published as Little Wood River near 

Carey), March 1941 to December 1942, April 1944 to September 1957. No winter records 

except 1921-24, 1926. Records for other years published as Little Wood River near 

Carey are at site 6 miles downstream and are not equivalent owing to diversion, inflow, 

and regulation.

Gage. Water-stage recorder. Altitude of gage Is 5,250 ft (by barometer). Prior to 

Ipr. 5, 1944, at site 650 ft downstream at datum 3.50 ft lower.

Average discharge.--5 years (1920-24, 1925-26), 152 cfs (110,000 acre-ft per year).

Extremes.--Maximum discharge during year, 1,400 cfs May 19 (gage height, 3.75 ft); minimum recorded, 34 cfs Mar. 14; minimum gage height recorded, 0.80 ft Sept. 7.

1920-26, 1941-42, 1944-57: Maximum discharge, 3,110 cfs Dec. 22, 1955 (gage height, 

6.34 ft, from floodmark) , from rating curve extended above 1,800 cfs; minimum recorded, 

14 cfs Aug. 29, 30, 1926.

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

Flow slightly regulated by Campbell Reservoir (capacity, 125 acre-ft; 2,700 acre-ft 

prior to failure of dam in 1930) on tributary. Diversions above station for Irrigation 

of about 5,250 acres.

Cooperation. Water-stage recorder inspected by employees of Little Wood Reservoir Co. 

and Water District No. 11 C.

Revisions.--WSP 633: Drainage area.

Rating table, water year 1956-57 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Aug. 14-29, Sept. 3-20, 22-50)

0.9 

1.1 

1.4

38

66

132

1.7 

2.0 

2.5

228

345

585

3.0 

3.5 

4.0

870

1,190

1,530

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Tota:

Mean

Ac-ft

Oct.

47

*47

44

44

47

44

44

44

47

52

64

68

62

58

57

58

57

57

57 

57

57

58

63

64

64

68

77

66

60

70

71

1,773

57.2

3,520

Nov.

60

a55

a58

a62

a66

a71

a72

68

68

68

71

73

*73

62

51

68

68

52

46 

a50

a6o

a60

a58

a58

a56

a56

a54

a54

a54

a5E

1,824

60.8

3,620

Dec.

tso

-

-

-

Jan.

_

-

-

Feb.

*104

-

-

-

-

Mar.

88

88

82

71

68

64

64

80

95

91

77

77

64

60

71

66

64

63

71 

84

93

82

73

75

79

73

73

80

95

124

158

2,473

79.8

4,910

Apr.

104

99

122

129

171

232

167

167

210

243

210

190

210

235

*228

207

204

210

228 

221

269

250

269

281

232

218

207

221

297

558

6,389

213

12,670

May

381

455

*465

412

381

417

510

550

560

555

590

612

678

706

712

712

717

798

1 , 500 

1, 100

912

840

734

668

618

590

602

624

*651

675

678

20,181

651

40,030

June

700

744

804

840

834

822

768

668

612

596

490

455

440

376

345

529

281

*2§5" 269

521

525

297

289

317

525

521

321

345

341

363

14,223

474

28,210

July

337

309

273

232

239

239

207

200

196

193

*190

174

161

161

149

135

129

122

122

119

111

104

99

93

91

86

84

82

82

84

Ii

4,882

157

9,680

Aug.

II

73

70

66

64

64

60

58

57

57

56

56

52

50

48

50

48

47

46 

*46

44

44

46

44

44

44

46

46

51

60

58

1,672

55.9

5,520

Sept.

56

57

51

50

47

46

44

43

44

44

47

47

46

46

46

44

*44

44

50 

51

51

51

50

51

50

47

44

44

44

44

1,418

47.5

2,810

Calendar year : Max Mln Mean Ac-ft

Water year : Max Min Mean Ac-ft

* Discharge measurement made on this day. 

t Result of discharge measurement.

a No gage-height record; discharge estimated on basis of weather records and records for Little 

Wood Reservoir, Little Wood River near Carey, and nearby streams, 

b Stage-discharge relation affected by ice.
MALAD RIVER BASIN 117

Little Wood Reservoir near Carey, Idaho

Location. La t 43°25'30", long 114°01'30", in NW^NW^ sec. 13, T. 1 N., R. 20 E., at 

gage-control structure near right end of dam on Little Wood River 8 \ miles northwest 

of Carey.

Drainage area. 279 sq mi.

Records available. --October 1955 to September 1957.

Gage. Staff gage read once daily usually about 10 a.m. Datum of gage is 5,100 ft above

mean sea level (levels by Bureau of Reclamation).

Extremes .--Maximum contents during year, 12,810 acre-ft May 19 (gage height, 99.2 ft, 

from spillway rating and discharge record below reservoir); minimum observed, 

88 acre-ft Oct. 2, but was less during period Oct. 3-10.

1955-57: Maximum contents, that of May 19, 1957; minimum observed, that of Oct. 2, 

1956.

Remarks. --Reservoir is formed by earth- and rock-fill dam constructed in 1939. Capacity 

of reservoir is 12,180 acre-ft between gage heights 27.4 (bottom of outlet gates) and 

97.4 ft (top of stop logs in spillway). Water is used for irrigation of land near 

Carey.

Cooperation oper , --Gage readings furnished by Little Wood Reservoir Co. and Water District

No. 11 C. Capacity curve furnished by Bureau of Reclamation.

Capacity table, water year 1956-57 (elevation, ir 

feet, and contents, In acre-feet)

31.0

35.0

40.0

45.0

50.0

226

490

869

1,340

60.0

70.0

80.0

90.0

100.0

2,660

4,440

6,760

9,660

13,090

Contents, In acre-feet, water year October 1956 to September 1957

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

(t)

(*)

Oct.

88

-

_

-

_

_

.

»

-

_

_

_

_

-

_

_

_

_

-

_

_

_

_

-

_

-

_

-

_

a840

_

+ 718

Nov.

-

_

_

-

_

_

_

_

-

.

_

1,658

_

-

_

_

_

_

-

_

-

_

_

-

_

_

-

-

a2, 020

_

+1,180

Dec.

-

_

-

_

-

-

_

-

_

_

2,110

.

-

_

-

.

_

-

_

_

_

_

1,968

_

-

-

-

_

a2 , 560

_

+540

Jan.

-

_

_

-

_

-

3,240

3,338

3,436

3,489

3,572

3,791

3,886

3,941

4,000

4,128

4,223

4,317

4,424

4,525

4,618

4,716

4,807

4,898

4,991

5,094

5,181

5,273

5,370

5,463

74.64

+2 , 903

Feb.

5,556 

5,682

5,772

5,862

5,957

5,805

6,138

6,234

6,332

6,406

6,476

6,596

6,688

6,786

6,881

6,972

7,064

7,157

7,252

7,364

7,477

7,585

7,717

7,862

8,056

8,301

8,549

8,795

-

87.12

+3,330

Mar.

8,989 

9,156

9,330

9,470

9,629

9,741

9,874

10,010

10,240

10,430

10,590

10,790

10,940

.

11,210

11,340

11,470

11,600

11,730

11,860

12,110

12,200

12,240

12,250

12,270

12,270

12,270

12,280

12,290

12 , 300

12,310

97.76

+3,517

Apr.

12,290 

12,280

12 , 300

12,300

12,340

12,360

12,330

12,310

12,330

12,360

12,370

12,330

12,350

_

12 , 350

_

-

-

-

-

_

-

-

-

-

_

-

-

-

el2,410

e98.05

+100

May

12,440

-

-

_

-

-

-

-

_

-

-

-

-

_

-

-

_

-

_

-

-

-

-

_

-

-

12,490

_

e!2,500

698.30

+90

June

:

-

-

-

_

-

-_

-

_

-

-_

-

_

-

12,380

-

-

_

-

12,390

-

-

_

-

-

-

612,420

e98.09

-80

July

;

12,320

-

_

-

-

-

11,860

_

-

-

-

-

_

-

-

-

-

_

-

-

-

-

_

-

-

-

_

a5,620

-

-6,800

Aug.

-

-

-

_

-

-

-

-

_

-

-

-

-

_

-

-

-

1,616

-

-

-

-

-

_

1,439

-

-

_

al , 430

-

-4,190

Sept.

;

-

-

-

_

-

-

-

-

_

-

-_

-

_

1,125

1,096

1,087

-

1,125

-

1,134

-

-

_

-

-

-

al,040

_

-390

Calendar year 1956.................... * -7,820

Water year 1956-57.................... t +918

t Gage height, in feet, at end of month, 

t *Change ^nin contents, uonuencs, in acre-feet. aui-e-ieeu.

a No gage-height record; contents Interpolated or estimated on basis of inflow-outflow study.

<= Gage height computed from stage-discharge relation for spillway.
118 MALAD RIVER BASIN

Little Wood River below reservoir, near Carey, Idaho

Location. Lat 43°25'30", long 114°01'30", in N| sec. 13, T. 1 N., R. 20 E., on left bank 

a quarter of a mile downstream from Little Wood River Dam, three-quarters of a mile 

upstream from Little Pish Creek, and 83- miles northwest of Carey.

Drainage area. 280 sq mi.

Records available.--October 1955 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 5,107.33 ft above mean sea level (levels 

Ey Bureau of Reclamation).

Extremes.--Maximum discharge during year, 1,580 cfs May 19 (gage height, 5.31 ft); minimum observed, 0.9 cfs Jan. 25 (gage height, 0.73 ft).

1955-57; Maximum discharge, that of May 19, 1957; minimum observed, that of 

Jan. 25, 1957.

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

fair. Storage in Little Wood Reservoir (capacity, 12,180 acre-ft, revised) began 

Feb. 12,1941. Plow also slightly affected by storage in Campbell Reservoir (capacity, 

125 acre-ft) on South Pork Muldoon Creek. Diversions above station for irrigation of 

about 5,250 acres.

Cooperation.--Water-stage recorder inspected by employees of Little Wood Reservoir Co. 

and Water District No. 11 C.

Rating table, water year 1956-57 (gage height, In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used May 19 to June 12)

.9 

1.0 

1.2 

1.5

0.3 

Z.5 

7.1

18

47 

100

2.0 

2.5 

3.0 

4.0 

5.0

210

355

540

970

1,480

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7a

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

57

*55

47

46

46

46

46

46

47

50

57

65

6T

60

63

50

58

57

57 

55

57

61

65

63

37

4.8

4.8

4.3

4.3

3 3-7?9

1,380.0

44.5

2,740

Nov.

3.5

3.5

3.1

37T

3.1

3.1

3.1

75

92

74

74

76

*74

74

72

72

72

72

72 

72

41

7.1

13

13

13

15

26

34

34

36

1,225.6

40.9

2,430

Dec.

42

44

46

50

50

55

74

65

47

34

32

32

 32

36

42

42

47

57

58 

58

58

58

58

33

3.1

3.1

3.1

3.1

3.1

3~TT 2.8 

£ . O

1,174.1

37.9

2,330

Jan.

2.8

278

2.8

2.8

2.8

2

1

1

1

1

1

1

1

1

1

1

1

1

1 

1

1

1

1

1

*.9

1

1

1

1

1

1

40.9

1.32

81

Feb.

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1.5

2

44"

4

3.5

*3.5

-

43.5

1.55

86

Mar.

3

2.5

2.5

2

2

2

3

4

4

3.5

3

2.5

2.5

2.5

2.5

2.5

2.5

3

4 

5

7

18

40

74

79

76

76

81

96

122

152

879.5

28.4

1,740

Apr.

122

*104

12T

135

168

250

186

177

200

239

233

191

208

233

241

215

205

210

231 

226

255

250

250

272

233

213

198

203

252

517_

6,341

211

12,580

May

352

*400

428

389

345

369

442

512

540

520

552

584

648

680

688

672

684

763

1,580 

1,280

990

907

781

684

620

572

572

588

620

640

636

19,838

640

39,350

June

676

727

799

844

866

862

768

676

632

608

496

457

446

403

365

349

301

*278

283 

320

333

311

295

314

326

323

317

349

342

362

14,428

481

28,620

July

349

3lT

272

252

255

233

252

258

295

*289

260

239

244

255

283

280

275

269

280 

286

283

289

298

292

295

295

286

272

266

241

8,493

274

16,850

Aug.

235

105

200

195

181

186

188

193

193

184

161

150

148

150

148

141

155

118

102 

*89

74

60

44

56

5?

58

55

55

55

52

47

5,884

125

7,700

Sept.

47

41

40

40

40

44

53

52

58

72

83

79

74

74

72

72

*61

53

46 

40

40

46

55

47

47

53

57

57

57

57

1,657

55.2

3,290

Calendar year 1956: Max 1.06O Min 2.8 Mean 213 Ac -ft 154, 6OO

Water year 1956-57: Max l,38o Min 0.9 Mean 163 Ac-ft 117,800

* Discharge measurement made on this day.

Note. No gage-height record Jan. 3-24, Jan. 26 to Feb. 27, Mar. 1-23; discharge estimated on 

basis of weather records, 2 discharge measurements, and records for station near Carey and for 

Little Wood Reservoir.
MALAD RIVER BASIN 119

Little Wood River near Carey, Idaho

Location.--Lat 43°23', long 114°00', In Ej sec. 30, T. IN., R. 21 E., on right bank 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 miles northwest of Carey.

Drainage area.--312 sq ml.

Records available.--April 1904 to May 1905 (gage heights only), September 1926 to November 1942, April 1943 to September 1957. Monthly discharge only for some periods, published in WSP 1317. February 1920 to September 1926 at site 6 miles upstream; records 

not equivalent because of diversion and inflow.

Gage.--Water-stage recorder. Datum of gage is 4,990.59 ft above mean sea level, unadJusted. Apr. 28, 1904, to May 31, 1905, staff gage, Sept. 20, 1926, to Apr. 22, 1938, 

water-stage recorder, and Apr. 23 to Aug. 17, 1938, staff gage, all at datum 0.74 ft 

higher.

Average discharge.--3Q years (1926-42, 1943-57), 135 cfs (97,740 acre-ft per year).

Extremes. Maximum discharge during year, 1,630 cfs May 19 (gage height, 6.78 ft); minimum, 1.6 cfs Feb. 6, 7, 16 (gage height, 1.55 ft).

1904-5, 1926-57: Maximum discharge, 6,000 cfs (due to failure of reservoirs on 

Little Fish Creek) Apr. 20, 1938 (gage height, 12.81 ft, present datum, from floodmark), from rating curve extended above 1,800 cfs; minimum, 1 cfs Jan. 26, 1945, 

Jan. 20, 1948.

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

Diversions above station for irrigation of about 6,450 acres. Storage in Little Wood 

Reservoir (capacity, 12,180 acre-ft) began Feb. 12, 1941. Flow also affected by 

Campbell, Cameron, and Howard Reservoirs (combined capacity, 690 acre-ft) on South Fork 

Muldoon and Little Fish Creeks.

Cooperation.--Water-stage recorder inspected by employees of Little Wood Reservoir Co. 

ana Water District No. 11 C.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

52

90

168

276

410

4.5 

5.0 

5.5 

6.5

590

780

1,000

1,460

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

*57

54

46

44

45

45

44

46

46

49

56

64

6T

60

64

48

59

56

57

56

56

58

63

64

46

8.5

7.8

7.2

6.5

6.9

6.0

1,389.9

44.8

2,760

Nov.

b6.0

b675"

b6.9

6.9

6.9

7.2

7.2

59

9474"

74

74

*72

72

71

71

71

71

70

70

48

b8.5

16

17

18

18

26

34

34

37

1,247.1

41.6

2,470

Dec.

43

43

45

49

50

52

70

6T

50

35

35

33

*35

38

43

43

47

57

58

58

59

b59

b59

43

b6.2

b4.6

b3.9

b379

b3.9

b3.9

b3.9

1,200.3

38.7

2,380

Jan.

b3.9

b37§"

b3.9

b3.9

b3.7

b3.7

b3.5

b3.0

b2.6

b2.6

b2.6

b2.6

b2.6

2.6

2.5

2.5

b2.5

b2.5

b2.5

b2.5

b2.5

b2.5

b2.5

b2.5

*b2.5

b2.4

b2.4

b2.3

b2.3

b2.2

b2 .2

86.4

2.79

171

Feb.

b2.1 bo:

b2.1

b2.1

2.1

2.1

2.1

2.1

2.1

2.3

2.3

2.3

2.5

2.5

2.6

2.6

bZ.6

b2.6

b2.6

2.8

2.8

2.8

5.6

27

85

52

41

*b24

-

286.8

10.2

569

Mar.

b!3

b9.2

8.2

WT3

10

8.2

16

22

28

21

b!8

21

b!8

b!7

17

18

18

18

18

17

20

29

71

76

79

77

79

82

92

118

150

1,197.4

38.6

2,380

Apr.

122

*102

ITS

128

161

249

185

168

192

249

270

213

226

258

276

235

221

226

249

238

273

273

273

295

255

229

215

215

258

330

6,702

223

13,290

May

364 *4TJ

444

413

370

390

452

526

550

535

566

598

651

680

700

676

696

776

1,440

1,290

1,000

930

812

704

648

594

594

606

*633

648

648

20,347

656

40,360

June

676

724

792

825

840

835

756

672

636

622

520

468

448

406

361

346

302

*276 2~79~

311

330

308

292

305

321

321

314

343

334

352

14,315

477

28,390

July

340

315

276

255

238

2-4? 235

255

295

*289

261

238

243

252

282

282

276

273

282

289

286

292

302

289

292

292

279

273

267

258

240

8,498

274

16,860

Aug.

215

2oo

197

187

175

178

182

182

182

175

155

140

142

144

146

142

134

120

105

*95

83

70

56

35- 43

59

56

56

56

54

52

3,837

124

7,610

Sept.

51

46

13" 43

44

46

53

52

56

68

83

W

77

77

76

75

*70

63

56

51

50

53

62

53

52

52

56

53

53

53

1,749

58.3

3,470

Calendar year 1956: Max 1,040 Mln 3.9 Mean 216 Ac-ft 157,000

Water year 1956-57: Max 1,440 Mln 2.1 Mean 167 Ac-ft 120,700

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
120

MALAD RIVER BASIN 

Silver Creek near Picabo, Idaho

Location.--Lat 43°17', long 114°01', in sec. 1, T. 2 S., R. 20 E., on left bank lj miles 

downstream from drain ditch of Blaine County Drainage District No. 1 and 3 miles 

southeast of Picabo.

Drainage area. 88 sq mi, approximately.

Records available. May 1920 to September 1957 (1923-35, irrigation seasons only).

Gage.--Water-stage recorder. Altitude of gage is 4,790 ft (by barometer).

Average discharge. 24 years (1920-22, 1935-57), 154 cfs (111,500 acre-ft per year).

Extremes.--Maximum daily discharge during year, 320 cfs Feb. 27; maximum gage height 

recorded, 3.86 ft Jan. 29, but probably was higher during period of no gage-height 

record; minimum discharge, 86 cfs June 8 (gage height, 1.17 ft), but may have been 

less during periods of ice effect.

1920-57: Maximum discharge recorded, 357 cfs Dec. 24, 1955 (gage height, 3.70 ft); 

maximum gage height recorded, 4.57 ft Jan. 22, 1950 (ice Jam); minimum discharge, 

26 cfs June 2, 1920 (gage height, 0.48 ft).

Remarks. Records excellent except those for periods of ice effect or no gage-height

record, which are fair. Diversions for irrigation of about 9,000 acres above station. 

Two small canals bypass station. Records of discharge do not include water bypassed 

around station at times of slough on right bank from which there is some diversion 

for irrigation. Silver Creek receives considerable return flow resulting from Big 

Wood River irrigation.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.2 

1.5 

2.0

114

166

2.5 

3.0 

3.5

221

276

333

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

199

196

*188

187

188

188

185

179 155"

184

194

207

219

218

212

208

206

206

206

208

204

202

202

207

207

210

224

234

223

220

225

6,322

204

12,540

Nov.

234

25¥

216

210

209

211

216

216

211

209

207

206

*202

197

192

189

192

198

195

187

184

181

TSl

182

184

182

184

181

184

182

5,946

198

11,790

Dec.

180

180

179

*179

179

180

160

blSO

br5B"

blSO

b200

196

194

214

T§0

186

184

182

180

178

177

174

b!70

167

166

164

163

162

161

161

160

5,446

176

10,800

Jan.

T59- 159

156

b!45

b!40

b!25

b!25

b!35

b!40

b!30

b!30

blSO

155

157

154

153

b!35

b!20

bllO

b!45

*b!40

b!35

b!30

b!20

blOS

b95

b90

b90

100

120

145

4,093

132

8,120

Feb.

160

170

170

160

155

155

155

160

170

170

170

170

160

180

190

190

190

190

190

190

190

190

190

200

230

300

320

310

-

5,375

192

10,660

Calendar year 1956: Max 285 Min 63

Mar.

*300 255"

244

220

209

198

190

216

241

244

213

204

207

194

186

191

202

207

208

211

213

202

191

189

191

194

190

189

192

200

202

6,518

210

12,930

Apr.

206 *T9"8~

191

187

184

189

190

185

180

178

176

176

174

169

168

163

162

162

166

169

177

175

169

163

156

155

154

152

149

147

5,170

172

10,250

May

142

141

*139

136

135

132

125

122

136

139

145

189

229

252

211

213

216

210

243

267

236

213

221

234

230

214

197

191

*186

177

166

5,787

187

11,480

June

161

IBT

138

125

113

104

94

88

W

110

114

114

114

113

115

124

124

115

114

119

119

123

»124

127

126

130

132

135

138

144

3,640

121

7,220

July

148

153

155

155

154

156

159

161

157

*149

145

143

146

150

150

141

140

148

153

146

143

145

139

144

143

142

141

138

139

139

137

4,555

147

9,030

Aug.

138

135

134

132

126

123

T2S

132

135

134

130

131

130

127

128

132

132

128

130

*132

132

136

142

150

152

150

145

148

153

167

179_

4,271

138

8,470

Sept.

194

200

I9T

186

184

181

180

177

168

166

164

162

164

168

167

165

161

*156

153

152

154

153

152

152

149

153

152

145

145

144

4,941

165

9,800

Mean 167 Ac-ft 121, 5OO

Water year 1956-57: Max 320 Min 88 Mean 170 Ac-ft 123,100

Discharge measurement made on this day. 

b Stage-discharge Stage-discharge relation relation affected affected by ice.

Note. Plow in bypass channel, which carries water around gage, measured as 2.37 cfs Oct. 3; 

3.74~cfs Nov. 13; 1.80 cfs Dec. 4j no flow Jan. 21; 81.8 cfs Mar. 1; 23.0 cfs Apr. 2; 3.09 cfs 

May 3; 21.1 cfs May 29; 4.45 cfs June 23j 1.25 cfs (eat.) July 10; 0.9O cfs Aug. 20; O.79 cfs 

Sept. 18. No gage-height record Jan. 29 to Feb. 28; discharge estimated on basis of weather 

records, records for Little Wood River at Shoshone and near Richfield, and for other nearby 

streams.
MALAD RIVER BASIN 121

Little Wood River near Richfield, Idaho

Location.--Lat 43°03', long 114°08', in sec. 30, T. 4 S., R. 20 E., on right bank half a 

mile upstream from Byrns Slough and heading of Dietrich Canal, 1 mile east of railroad 

station at Richfield, and 14 miles downstream from Silver Creek.

Drainage area.--570 sq mi, approximately.

Records available.--January 1911 to September 1957 (irrigation seasons only prior to 1955 

except 1913, 1921).

Gage.--Water-stage recorder. Altitude of gage is 4,270 ft (by barometer). Prior to 

Sept. 5, 1918, staff gage at site 500 ft downstream at datum 0.92 ft lower. Sept. 5, 

1918, to Apr. 13, 1920, staff gage and Apr. 14, 1920, to May 20, 1954, water-stage 

recorder, at site 500 ft downstream at datum 0.08 ft higher than present datum.

Average discharge.--5 years (1912-13, 1920-21, 1954-57), 156 cfs (112,900 acre-ft per 

year)~

Extremes --Maximum discharge during year, 652 cfs May 21 (gage height, 477 ft); maximum 

gage "height, 7.3 ft or more (ice jam) during period Jan. 28 to Feb. 25; minimum discharge, 74 cfs Aug. 13 (gage height, 2.32 ft), but may have been less during period of 

ice effect.

1911-57: Maximum discharge recorded, 868 cfs May 3, 1938 (gage height, 3.97 ft, 

site and datum then is use); maximum gage height recorded, 8.60 ft Feb. 21, 1956 (ice 

jam); minimum discharge recorded, 7.6 cfs June 24, 25, 1920 (gage height, 0.52 ft, 

site and datum then in use).

Remarks. Records excellent except those for periods of sluggish intake, which are fair, 

and those for periods of ice effect or no gage-height record, which are poor. Diversions for irrigation of about 38,300 acres above station. Flow partly regulated by 

Little Wood Reservoir (capacity, 12,180 acre-ft), Fish Creek Reservoir (capacity, 

13,700 acre-ft), and three small reservoirs on tributaries (combined capacity, 

690 acre-ft). River above Silver Creek is dry a large part of the time because of 

channel losses and irrigation diversions above Carey.

Rating table, water year 1956-57, except periods of ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Feb. 26 to Mar. 4)

2.3 

2.5

2.8 

3.1

94

136

187

3.4

3.8 

4.4 

5.0

247

341

512

731

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

139

141

*138

138

139

144

144

142

142

149

157

159

164

169

169

166

164

164

164

164

166

164

166

167

169

173

178

182

189 

ToTT J.O t

183

4,980

161

9,880

Calendar yeai

Nov.

187

191

183

180

178

176

176

178

178

178

176

176

176

*176

171

167

169

169

169

166

165

165

165

164

_ 164

164

164

164

162

16F

5,159

172

10,230

Dec.

162

160

160

162

162

160

150

130

130

140

170

190 175-

*180

182

166

164

160

159

157

155

150

150

150

152

150

150

152

152

151

148

4,879

157

9,680

- 1956: Max 496

Jan.

145

144

140

135

130

110

110

110

120

120

110

130

145

145

145

140

130

110

95

120

*135

130

120

105

95

90

80

50

80

100

120

3,669

118

7,280

Feb.

140

T45

160

160

145

145

145

145

155

155

155

155

145

155

165

175

175

175

170

170

175

190

220

240

260

*331

405

400

-

5,356

191

10,620

Mar.

541

254

218

202

193

183

180

202

220

212

191

182

180

174

171

173

176

180

178

178

174

167

162

164

164

162

160

160

160

162

5,908

191

11,720

Apr.

169

*173

171

166

164

162

166

167

166

164

164

173

176

171

176

183

166

157

160

169

171

178

176

169

176

167

162

157

154

1 6 2

5,035

168

9,990

May

185

*193

204

208

196

178

174

IBS

202

212

216

251

314

357

378

375

372

383

431

555

*645

586

572

545

535

506

472

*460

460

466

457

11,271

364

22,360

June

431

408

386

351

324

262

234

191

132

*127

144

111

88

83

83

87

89

84

80

10

82

83

86

88

89

98

100

99

104

110

4,714

157

9,350

July

122

126

132

121

117

113

115

114

113

103

107

*103

100

103

104

100

94

97

108

100

97

98

95

95

94

97

95

93

92

94

97

3,239

104

6,420

Aug.

94

94

93

88

88

82

82

84

86

87

80

80

81

80

82

80

90

86

87

*88

88

88

92

98

103

104

100

97

97

111

126

2,816

90.8

5,590

Sept.

142

150

152

TBo

146

142

138

136

133

130

130

124

122

126

128

128

*122

115

113

113

118

120

114

108 108"

114

121

117

115

113

3,788

126

7,510

Mln 63 Mean 172 Ac-ft 125,000

Water year 1956-57: Max 645 Mln 80 Mean 167 Ac-ft 120,600

* Discharge measurement made on this day.

near Goodlng. Intake sluggish Mar. 1 to Apr. 16, May 23-28. 

503667 O - 59 - 9

discharge estimated on basis 

ear Plcabo, and Malad River
122 MALAD RIVER BASIN

Little Wood River at Shoshone, Idaho

Location. Lat 42°56' , long 114°24' , in sec. 2, T. 6 S., R. 17 E., on left bank Just 

upstream from dam used prior to 1955 for diversion of town water supply, 400 ft 

upstream from highway bridge in Shoshone.

Drainage area . 620 sq mi, approximately.

Records available. April 1922 to September 1957 (irrigation seasons only prior to 1955).

Gage. Water-stage recorder. Datum of gage is 3,956.99 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Oct. 18, 1954, at datum 1.98 ft 

higher.

Extremes. Maximum discharge during year, 676 cfs May 22 (gage height, 6.83 ft), but may 

have been more during period of ice effect; maximum gage height, 9.42 ft Feb. 27 (ice 

Jam); minimum discharge recorded, 30 cfs Oct. 3.

1922-57: Maximum discharge recorded, that of May 22, 1957; maximum gage height, 

that of Feb. 27, 1957; practically no flow July 29, 1931, Oct. 3, 1938.

Remarks.--Records excellent except those for period of shifting control, which are good, 

and those for periods of no gage-height record or ice effect, which are poor. Diversions for irrigation of about 52,200 acres above station. Flow affected by operation 

of Milner-Gooding canal, which diverts from Snake River and crosses Little Wood River 

above station, by operation of five reservoirs above Carey (see Remarks for station 

near Richfield) , and by Big Wood River water deliveries through Byrns Slough for 

Dietrich Canal via Little Wood River at Richfield.

Rating tables, water year 1956-57, except periods of Ice effect or shifting 

control (gage height, In feet, and discharge, In cubic feet per second)

Oct. 3 to Sept. 30

0.5 

.8

1.4

0.7 

1.0 

1.5 

2.0 

2.5

29

49

87

132

193

3.0 

3.5 

4.0 

5.0 

6.8

290

372

429

529

674

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Tota]

Mean

Ac-ft

Oct.

92

34

»30

3?

45

45

43

45

50

52

58

67

70

75

81

86

85

83

82

86

87

89

83

82

86

94

96

98

100 

114

118

2,288

73.8

4,540

Nov.

117

126

126

125

127

118

119

108

104

107

106

106

106

*106

105

127

166

TS3

132

144

151

154

161

152

146

148

144

141

139 

137

3,909

130

7,750

Dec.

139

137

137

139

*135

134

119

100 10"8

115

158

175

T6T

154

161

158

151

153

150

146

141

b!40

b!40

b!40

b!45

b!40

b!40

143

143

143 

139

4,389

142

8,710

Calendar year 1956: Max 580

Jan.

137

136

b!25

bl!5

100

96

92

98

bllO

bllO

94

110

b!30

b!35

b!40

131

118

82

70

b95

b!20

b!20

100

78

b75

70

70

65

65

80

loo

3,167

102

6,280

Feb.

T30" 130

140

140

130

130

130

130

140

140

140

140

130

140

150

160

160

160

155

155

160

170

230

350

480

550

b650

b6So

6,020

215

11,940

Mar.

511

362

280

250

*218

223

165

153

188

203

209

196

178

180

173

159

157

153

164

163

163

161

158

148

144

144

143

141

141

106

92

5,826

188

11,560

Apr.

*94

89

92

89

81

82

84

109

133

129

126

100

110

130

130

138

133

138

149

154

160

150

113

172

211

246

261

238

236

238

4,315

144

8,560

May

*259

355

384

449

462

474

440

451

493

515

529

560

566

574

605

590

571

585

632

629

643

666

607

585

*601

597

571

*552

579 

588

579

16,641

537

33,010

June

565 545-

552

543

546

516

485

483

498

515

518

525

523

527

538

531

525

519

499

510

515

522

527

525

515

511

502

490

489 

499

15,558

519

30,860

July

505

498

487

494

506

495

494

501

496

493

497

*510

511

512

513

519

514

516

521

550

515

521

521

515

509

507

502

500

502 

503

503

15,700

506

31,140

Aug.

505

515

520

550

510

506

509

514

502

493

492

492

498

480

470

480

486

486

485

476

470

*466

456

4SO

483

496

495

491

483 

492

498

15,229

491

30,210

Sept.

500

506

451

480

471

455

443

433

433

443

447

447

430

434

445

441

442

426

*421

442

450

451

430

421

399

379

372

374

376 

382

13,059

435

25,900

Mln 30 Mean 297 Ac-ft 215, 7OO

Water year 1956-57: Max 666 Mln 30 Mean 291 Ac-ft 21O,5OO

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 2, Jan. 23, Jan. 26 to Feb. 26, Mar. 3, 4; discharge estimated 

on basis of weather records and records for stations near Richfield, Silver Creek near Plcabo, and 

Malad River near Ooodlng. Shifting-control method used Oct. 3 to Jan. 25.
MALAD RIVER BASIN 123

Malad River near Goodlng, Idaho

Location. Lat 42°54', long 114°48' , In sec. 21, T. 63., R. 14 E., on right bank at 

Hudson Ranch, 2 miles downstream from bridge on Bllss-Goodlng highway, 3J- miles downstream from confluence of Big Wood and Little Wood Rivers, 5 miles upstream from diversion dam for King Hill project, and 6 miles southwest of Gooding.

Drainage area.--2.990 sq mi, approximately.

Records available. March 1916 to September 1957 (fragmentary October 1923 to September 

1926; no winter records for water years 1923, 1936-37, 1942, irrigation seasons only 

for water years 1927-35). Prior to October 1950, published as Big Wood River near 

Gooding.

Gage. Water-stage recorder. Altitude of gage is 3,345 ft (from topographic map). Prior 

to Apr. 13, 1921, staff gage at same site and datum.

Average discharge. 25 years (1916-22, 1937-41, 1942-57), 237 cfs (171,600 acre-ft per 

year).

Extremes. Maximum discharge during year, 2,930 cfs Feb. 26 (gage height, 8.55 ft), but 

may have been more during period of ice effect; maximum gage height, 10.06 ft Feb. 24 

(ice Jam)'; minimum, 3.8 cfs Oct. 16, 17 (gage height, 0.68 ft).

1916-57: Maximum discharge, 6,500 cfs Apr. 27, 1952 (gage height, 10.67 ft); no 

flow at times in many years.

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

Diversions for irrigation of about 155,000 acres above station. Flow regulated 

by Magic Reservoir (see p. 114) and by several smaller reservoirs on tributaries and 

affected by deliveries from canals diverting from Snake River at Milner.

Revisions (water years).--WSP 1347: 1934.

Rating table, water year 1956-57, except periods of ice effect (ga

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Feb. 25, 26, May 27 to June 10)

0.6

.7

.9

1.1

1.4

2.0

2.4 

4.3

19

40

106

3.0 

4.0 

5.0 

6.0 

7.0 

8.0

254

453

745

1,140

1,720

2,520

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

Z3

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

-52 146

*54

47

34

34

34

33

32

34

39

41

54

43

16

4.0

21

47

42

43

45

46

54

56

59

70

76

74

73

76

102

1,611.0

52.0

3,200

Nov.

222

228

220

210

243

236

261

264

240

241

246

236

241

*236

232

266

225

280

H9

270

243

252

246

264

266

233

235

227

236

232

7,300

243

14,480

Dec.

225

209

240

249

*244

225

162

147

125

130

222

254

238

212

198

236

203

219

219

203

196

160

180

217

200

182

168

178

178

173

150

6,142

198

12,180

Jan.

139

139

133

130

119

110

95

110

115

110

100

90

120

130

140

130

120

100

80

80

110

125

125

*105

80

70

70

65

60

60

90

3,250

105

6,450

Feb.

100

110

120

120

130

130

130

120

120

130

130

130

133

148

161

180

184

170

166

168

164

174

400

2,000

*2,100

2,120

2,090

1,260

-

13,088

467

25,960

lar.

903

617

429

*311

266

280

230

266

230

208

1.040

1^020

933

787

393

144

116

102

88

156

236

296

446

443

436

436

406

339

337

341

353

12,588

406

24,970

Apr.

*376

795

1,090

1,100

1,100

909

843

1,010

953

937

790

868

587

361

378

427

415

470

404

415

491

515

537

557

784

790

714

686

566

427

20,295

676

40,250

May

259

276

335

460

557

512

*353

160

223

406

572

897

1,120

1,190

1,050

1,160

1,180

1,200

1,750

2,120

2,510

2.520

2,410

1,910

1,570

1,560

1,450

*1,260

1,190

1,200

1 250

34,610

1,116

68,650

June

1,310

1,330

1,420

1,500

1,590

1.640

1,620

1,440

1,350

1,300

1,130

868

626

572

647

540

382

299

254

209

198

238

203

182

161

137

112

97

72

68

21,495

716

42,630

July

74

67

57

37

44

51

35

28

28

I8_

18

27

*38

60

85

58

64

81

89

96

103

103

110

101

97

88

92

91

86

77

2,085

67.3

4,140

Aug.

91

106

127

155

148

132

137

146

150

133

120

116

114

110

88

70

76

88

97

87

72

59

*43

34

36

44

68

76

87

96

136

3,042

98.1

6,030

Sept.

154

155

167

162

139

123

101

68

64

81

103

120

134

136

170

*162

172

191

209

208

224

281

~SzS 288

224

200

190

185

182

198

5,024

167

9,960

Calendar year 1956: Max 2,680 Min 1.6 Mean 385 Ac-ft 279,200

Water year 1956-57: Max 2,520 Mln 4.0 Mean 358 Ac-ft 258,900

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Dec. 9, Jan. 7-13, Jan. 16 to Feb. 12, Feb.
124 MALAD RIVER BASIN

King Hill Canal near Hagerman, Idaho

Location. --Lat 42°52', long 114°55' , in SWjj- sec. 27, T. 6 S. , R. 13 E. , on left bank above 

entrance to inverted siphon crossing Snake River, half a mile west of highway bridge 

over Malad River and 3j miles north of Hagerman.

Records available .--March 1930 to September 1957 (irrigation seasons only 1930-37, 

1940-46) .

. 

efflux, used June 1, 1949, to May 22, 1951.

Extremes. --1930-57: Maximum daily discharge, 348 cfs July 2, 1956; no flow or small flow 

from leakage at headgate during nonirrigation seasons and other periods when gates 

were closed.

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

poor. This canal, which is operated by King Hill Irrigation District to provide water 

for irrigation of about 10,000 acres, diverts from Idaho Power Co.'s canal, which in 

turn diverts from Malad River (Malad Springs water) .

Cooperation. --Water-stage -recorder graph for supplementary gage furnished by King Hill 

Irrigation District.

Revisions (water years). --WSP 723: 1930.

Discharge, in cubic feet pep second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Ocb.

312

312

312

312

312

300

277

277

277

145

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

a2

a2

a2

al

aO

ao

2,873

92.7

5,700

Nov.

(*)

0

0

o

Dec.

(*)

0

0

o

Jan.

(*)

0

0

O

Feb.

(*)

-

0

0

o

Mar.

0

0

0

0

o

o

o

0

0

0

o

0

0

0

o

0

o

0

0

0

0

0

0

0

ao

a6

alO

alO

alOO

a!55

a!55

436

14.1

865

Apr.

a!55

a!55

a!55

a!55

a!55

a!55

a!55

a!55

*155

155

208

243

243

243

244

244

284

301.

3OO

299

299

299

298

299

299

299

298

316

*326

332

7,224

241

14,330

May

331

331

331

331

331

331

331

328

332

334

334

334

334

335

334

334

334

333

324

320

313

316

321

321

321

322

*321

326

328

329

329

10,174

328

20,180

June

329

329

329

329

329

329

328

328

329

329

323

320

322

323

324

324

322

318

320

319

312

310

*301

291

44

2

90

311

323

325

8,812

294

17,480

July

327

331

332

332

329

328

326

327

329

328

326

326

326

327

*327

326

327

330

332

332

331

331

331

327

327

326

326

326

326

326

326

10,171

328

20,170

Aug.

326

326

328

328

325

324

325

325

326

326

323

319

319

320

56

2

117

328

*328

328

330

330

330

332

332

331

330

330

329

330

329

9,332

301

18,510

Sept.

326

326

327

327

326

326

326

326

326

324

318

318

320

322

323

324

318

313

313

314

313

317

*321

320

321

321

321

321

322

322

9,642

321

19,120

Calendar year 1956: Max 348 Mln 0 Mean 159 Ac-ft 115,200

Water year 1956-57: Max 335 Mln 0 Mean 161 Ac-ft 116, 4OO

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of weather records and observer's
SNAKE RIVER MAIN STEM 125

Snake River at King Hill, Idaho

Location. Lat 43°00' , long 115°11', in SW£ sec. 7, T. 5 S., R. 11 E., on right bank 300ft 

east of railroad station at King Hill and 20 miles downstream from Malad River.

Drainage area.--35 ,800 sq mi, approximately. 

Records available . May 1909 to September 1957.

Gage. Water-stage recorder. Datum of gage is 2,492.3 ft above mean sea level, by stadia 

Tevels. May 13, 1909, to Mar. 1, 1910, staff gage on left bank at present site at 

datum 2.20 ft higher. Mar. 7 to Aug. 16, 1910, staff gage three-quarters of a mile 

upstream at different datum. Aug. 17, 1910, to Oct. 7, 1928, staff gage at present 

site and datum.

22 (gage height, 12.70 ft); minft Feb. 14; minimum daily disExtremes. Maximum discharge during year, 30,300 cfs May 

imum, 2,030 cfs Feb. 6, 14; minimum gage height, 2.65 

charge, 7,120 cfs July 2.

1909-57: Maximum discharge observed, 47,200 cfs June 22, 1918 (gage height* 16.3 ft), 

from rating curve extended above 30,000 cfs; minimum observed, 1,250 cfs Jan. 10, 1950 

(gage height, 1.75 ft); minimum daily, 4,760 cfs July 7-9, Aug. 15, 16, 1910.

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

good". Flow regulated by powerplants at Lower Salmon Falls and near Bliss and by many 

reservoirs above station. Practically entire flow at Milner diverted at times during 

some irrigation seasons; flow at King Hill is then derived largely from springs and 

seepage entering below Milner. About 1,590,000 acres of land irrigated by diversions 

from river and its tributaries above station. Records of chemical analyses for the 

water year 1957 are given in WSP 1523.

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, in cubic feet per second)

5.0 

6.0 

7.0

5,730

7,840

10,300

9.0

11.0

13.0

16,500

23,700

31,500

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

9,590

9,060

9,920

9,280

9,480

9,890

9,420

10,700

11,100

10,600

10,300

11,400

13,500

14,500

12,300

11,900

10,700

10,100

10,400

10,800

9,900

11,400

11,600

11,700

11,100

11,100

12,000

11,200

11,100

11 ', 300

338,040

10,900

670,500

Nov.

10,400

11,500

10,700

10,600

11,400

11.700

11,400

11,100

11,300

11,200

10,700

11,200

10,700

*10,400

9,550

10,700

9.500

10,400

9,700

9,740

10,000

10,300

11,000

10,400

10,600

10,400

11,100

10,500

10,400

10,400

318,990

10,630

632,700

Dec.

10,500

10,500

10, 600

10,400

*1 1,000

10,800

10,500

9,940

10,100

1 1 , 200

10,200

10,900

10,700

10,400

10,700

10,900

10,500

10,700

10,800

11,100

10,900

10,400

10,300

9,960

10,200

11,400

10,500

10,700

10,000

10 , 700

10 , 300

327,800

10,570

650 , 200

Jan.

10,300

11,100

11,600

11,100

11,200

12.000

11,300

11,600

11,500

10,600

10 , 500

10, 600

11,400

*1 1,600

11,400

10,100

11,100

11,000

10,900

10,300

10,500

10,100

10,700

9,620

10,600

10,900

10,100

10,700

10,500

9 940 

all^OOO

336,060

10,840

666,600

Feb.

13,000

12,000

11,700

11,100

10,100

9,900

9,660

9,900

9,890

9,740

10,700

9,790

10,700

8.520

10,400

10,300

10,000

10,600

9,120

10,6OO

9,810

10,400

10,200

12,200

14,000

*14,100

14,200

12, 500

-

305,130

10,900

605,200

Mar.

11,700

11,500

10,100

11,200

10,500

11,300

11,200

12,200

12,700

13,200

14,100

13,600

12,300

11,600

12,500

11,100

11,200

12,600

12,000

12,100

12,100

11,800

11,500

12,500

*12,800

12,700

12,700

13,600

16,100

15,100

15,300

384,900

12,420

763,400

Apr.

16,900

16,200

17.200

16,100

15,700

14,800

13,600

13,700

12,400

12, 600

13,000

13,300

12,500

12,300

13,800

12,900

12,800

13,800

12,900

13,100

14, 200

1'5,000

15,100

13,300

13,300

14,800

14,800

12,200

*13,500

11 , 600

417,400

13,910

827,900

May

9,700

9,940

9,220

10,500

10,700

11,800

9,760

10,600

10,800

11,000

11,800

14,800

18,200

17,900

20,700

21,500

20,900

20,800

24,100

26,000

26,700

29.200

27, 300

26,500

25,900

25, 700

*25,100

22,500

19,200

17,900

17,700

564,420

18,210

tl,120

June

16,500

15 200

isleoo

14,800

12,900

10,500

10,800

9,010

8,940

9,170

9,720

9,420

9,840

9,270

9,860

9.290

9,740

8,660

8,900

7,840

8,200

8,290

7,820

*8,300

8,260

8,050

7,980

7,740

7,610

7,360

295,350

9,845

585,800

July

7,240

7.120

7,440

7,300

7,660

7,520

7,570

7,900

7,560

7,600

7,820

7,420

7,400

*7,620

7,700

7,570

7,820

7,760

7,850

7,920

8,000

7,780

8,080

7,810

8,040

8,020

8,240

7,980

8,280

8,140

8,300

239,840

7,737

475,700

Aug.

8,160

8,560

8,800

8,380

8,280

8,540

8,320

8,540

8,520

8,410

8,370

8,140

8,100

8,370

8,520

8,800

6,620

7.940

*8,510

.8,620

8,080

8,540

8,500

8,220

8,520

8,560

8,500

8,600

8,680

8,440

8,790

260,930

8,417

517,500

Sept.

8,920

9,000

8,950

8,720

9,330

8,650

9,120

8,930

8,750

8,720

9,090

8,900

9,680

6,440

9,320

9,070

8,970

9,360

9,580

*9,530

9,850

9,520

10,500

9,460

9,660

9,750

9,000

9,280

9,080

9 520

276,450

9,214

548,300

Calendar year 1956: Max 28,900 Mln 7,040 Mean 12,160 Ac-l't 8,825,000

Water year 1956-57: Max £9,200 Mln 7,120 Mean 11,140 Ac-ft 8,064,000

* Discharge measurement made on this day. 

t Expressed in thousands.

a No gage-height record; discharge estimated 

Falls.

basis of records for station below lower Salmon
126 CANYON CREEK BASIN

Mountain Home feeder canal near Mountain Home, Idaho

Location. Lat 43°13', long 

downstream from point of 

Home.

115°42', in sec. 36, T. 2 S., R. 6 E., on right bank 40 ft 

diversion from Canyon Creek and 5 miles north of Mountain

Records available.--April 1924 to September 1929, April 1931 to September 1957 (irrigation 

seasons only 1924-29, 1931-35, 1938-45).

Gage.--Water-stage recorder and concrete control. Altitude of gage is 3,330 ft (by

barometer). Prior to May 4, 1924, staff gage and May 4, 1924, to Sept. 30, 1929, waterstage recorder, at site 30 ft downstream at datum 0.07 ft lower.

Extremes. 1924-29, 1931-57: 

at times in most years.

Maximum daily discharge, 182 cfs Jan. 1, 1943; no flow

Remarks. Records good except those for periods of no gage-height record or ice effect, 

which are poor. Canal diverts from Canyon Creek in sec. 36, T. 2S..R. 6E., and 

delivers 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. During nonirrigation season and at times when there is a surplus 

of water for irrigation, canal feeds directly into Mountain Home Reservoir. No diversion from canal above station. Flow regulated by headgates in Canyon Creek and by 

Long Tom and Little Camas Reservoirs.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-It

Oct.

8.4

a6.5

a6.5

a6.5

19

22

23

23

23

23

24

22

21

20

18

18

20

29

27

25

17

a5.0

*4.8

4.8

4.2

7.2

6.0

4.5

3.8

, A

4 .0

5.6

452.6

14.6

898

Nov.

4.2

Ts

2.3

2.1

2.1

2.1

2.1

1.9

1.9

1.9

1.9

1.9

2.1

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.6

1.6

1.5

57.9

1.93

115

Dec.

1.5

ITS

 1.5

2.9

*2.9

2.5

2.0

1.7

2.0

2.5

12

19

T.2

12

12

13

12

11

11

10

9.5

9

9

9.2

9

8.5

8.5

8

8

8

8

236.9

7.64

470

Jan.

8

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

8

8.5

9

9.5

9

7.

*8

7

7

7

8

8.5

8.5

8.5

8

8

7.5

7

7

7

7

9

242.0

7.81

480

Feb.

11

10

To

10

10

10

101111

12

12

11

*11

45

31

30

30

29

30

31

32

43

109

113

134

177

*179

TTf

1,269

45.3

2,520

Mar.

95

83

72

65

82

75

86

97

~BT 107

69

68

59

55

51

52

55

57

64

67

71

66

62

60

*63

62

41

35

43

60

39

2,042

65.9

4,050

Apr.

13

T3

13

22

39

41

33

30

32

39

40

58

64

61

57

54

52

51

49

50

50

54

54

*51

54

64

62

63

71

o^

1,419

47.3

2,810

Hay

85

98

108

105

104

97

84

71

63

61

63

64

63

56

56

54

53

57

76

87

87

85

82

78

74

71

68

64

63

60

63

2,300

74.2

4,560

June

63

66

67

67

67

67

67

67

67

*66

64

63

54

47

46

45

BT

58

66

67

66

67

65

69

77

76

85

84

84

84

1,988

66.3

3,940

July

79

7$

78

78

77

76

75

75

75

*75

74

74

72

71

71

70

70

70

69

69

69

68

67

67

63

59

51

49

49

49

49

2,116

68.3

4,200

Aug.

48

48

48

48

48

47

47

47

47

55

55

55

55

55

55

55

62

62

61

63

62

*60

60

60

60

66

67

65

60

60

59

1,740

56.1

3,450

Sept.

59

59

59

53

46

45

46

46

46

46

46

46

46

46

43

43

43

43

43

43

43

43

43

43

42

42

42

42

42

42

1,371

45.7

2,720

Calendar year 1956: Max 125 Min 1.5 Mean 42.1 Ac -ft 30,580

Water year 1956-57: Max 179 Min 1.5 Mean 41.7 Ac-ft 30,210

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage, weather recor 

records for Moore Creek above Roble Creek, near Arrowrock, and other nearby stations.

Note.--Stage-discharge relation affected by ice Nov. 20 to Dec. 3, Dec. 6-10, 21-23, Dec. 25 to 

FebTT4.
BRUNEAU RIVER BASIN 127

East Pork Jarbidge River near Three Creek, Idaho

Location. Lat 42°02', long 115°22', in SE^SE^ sec. 14, T. 16 S., R. 9 E., on left bank 

a quarter of a mile downstream from Murphy Hot Springs, 2 miles upstream from mouth, 

and 11 miles southwest of Three Creek.

Drainage area. 89 sq mi, approximately.

Records available . October 1928 to March 1933, September 1953 to September 1957. Monthly 

discharge only for October 1928, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 5,150 ft (by barometer). Prior to 

Sept. 23, 1953, at same site at datum about 1.6 ft higher.

Average discharge.--8 years (1928-32, 1953-57), 51.3 cfs (37,140 acre-ft per year).

Extremes.--Maximum discharge during year, 614 cfs June 5 (gage height, 5.11 ft); minimum, 

3.9 cfs Jan. 17; minimum gage height, 2.11 ft Sept. 24.

1928-33, 1953-57: Maximum discharge, that of June 5, 1957; minimum, 1.6 cfs 

Nov. 30, 1954; minimum gage height, that of Sept. 24, 1957.

Remarks. Records good except those for period of shifting control, which are fair. No 

regulation or diversion above station.

Rating tables, water year 1956-57, except period of shifting control (gage 

height. In feet, and discharge, in cubic feet per second)

Oct. 1 to June 9 June 10 to Sept. 30

2.4

2.5

2.6 

2.8 

3.0

6.5

10

17

37

63

3.5 

4.0 

4.5 

5.0 

5.5

152

257

374

496

622

2.1 

2.3 

2.5 

2.8

7.5

18

35

3.1 134

3.5 218

4.0 341

4.4 449

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

8.3

8.3

8.3

7.9

779

7.9

7.9

8.3

8.7

8.7

15

17

12

11

9.9

9.5

9.5

9.5

9.5

9.5

9.5

9.1

9.5

*10

10

12

19

15

11

12

13

324.7

10.5

644

Nov.

9.9

13

9.5

12

13

13

13

13

12

12

12

12

12

11

8.3

14

T2

9.1

8.3

7.9

10

10

9.5

9.5

8.7

9.1

8.3

8.3

9.1

9.1

318.6

10.6

632

Dec.

8.3

7.5

9.5

»9.5

9.1

8.3

6.8

7.2

9.1

12

15

?2~ 32

20

15

18

11

15

13

9.9

11

7.9

12

13

9.5

9.5

9.1

9.9

10

11

10

371.1

12.0

736

Jan.

9.9

11

9.5

7.5

7.2

7.9

8.7

9.9

8.7

9.5

11

10

9.9

9.5

*9.1

7.5

ft! 9.5

9.9

8.7

7.2

8.7

8.7

8.3

8.3

6.8

8.3

6.8

7.2

8 3

268.3

8.65

532

Feb.

8.3

7.9

7.5

7.2

7.9

7.5

7.5

7.5

7.5

7.5

7.5

7.5

8.3

29

15

14

13

14

15

*17

19

19

27

28

27

27

29

28

-

420.6

15.0

834

Mar.

24

24

23

22

22

20

Iff

37

38

37

32

30

26

22

25

23

22

22

22

22

25

24

24

23

25

29

27

*27

29

37

38

828

26.7

1,640

Apr.

38

36

37

36

39

68

65

71

81

86

86

86

84

91

101

96

89

86

79

77

74

76

73

73

68

63

62

69

105

139

2,234

74.5

4,430

May

170

188

*182

150

1ST

196

239

273

296

278

268

248

253

244

*222

226

250

285

454

388

314

312

314

305

294

312

348

384

398

434

427

8,804

284

17,460

June

471

494

541

566

576

534

478

466

464

*399

341

325

328

290

258

225

198

196

236

295

300

*268

275

290

331

338

344

364

370

344

10,905

364

21,630

July

'276" 305

243

232

203

196

192

177

167

154

146

138

130

124

112

99

93

86

81

*74

67

61

55

53

48

48

46

43

42

40

11

3,770

122

7,480

Aug.

36

34

32

31

30

30

30

29

27

26

25

25

24

24

23

23

22

21

21

21

21

21

20

*18

18

18

18

18

18

18

18

740

23.9

1,470

Sept.

17

T5

15

15

15

14

13

13

13

14

14

13

12

12

12

12

12

14

16

14

13

12

12

11

10

*10

10

10

10

10

384

12.8

762

Calendar year 1956: Max 521 Min 6.8 Mean 62.4 Ac-ft 45,330

Water year 1956-57: Max 576 Min 6.5 Mean 80.5 Ac-ft 58,250

Peak discharge (base, 200 cfs).--May 9 (1:30 a.m.) 331 cfs (4.29 ft); May 19 (4:30 a.m.) 501 cfs 

(4.95 ft); June 5 (2 a.m.) 614 efs (5.11 ft); June 29 (5 a.m.) 391 efs (4.19 ft).___________ 

* Discharge measurement made on this day. 

Note. Shifting-control method used May 20 to June 9.
128 BRTJNEAU RIVER BASIN

East Fork Bruneau River below Three Creek, near Three Creek, Idaho

Location. Lat 42°10 I , long 115°13', in NE-J- sec. 31, T. 14 S., R. 11 E., on left bank, 

1 mile downstream from Three Creek and 7 miles northwest of Three Creek Post Office.

Drainage area. 210 sq mi, approximately.

Records available.--May to September 1953, November 1953 to November 1954, January 1955, 

March 1955 to September 1957 (fragmentary May, August, November 1953, June to November 

1954, January, March, June to August 1955).

Gage.--Water-stage recorder. Altitude of gage, 5,150 ft (by barometer). Prior to

 Tiug. 30, 1955, staff gage at site at Sails Ranch about 3 miles downstream at different 

datum.

Extremes. Maximum discharge during year, 451 cfs May 19 (gage height, 7.43 ft); minimum,

 4.1 cfs Oct. 1 (gage height, 2.65 ft).

1953-57: Maximum discharge recorded, that of May 19, 1957; minimum recorded, 

1.1 cfs Sept. 11, 12, 13, 1955 (gage height, 2.32 ft).

Remarks. Records good except those for periods of ice effect, which are poor. DiversTons for irrigation from main stem and tributaries above and below station. Water 

diverted from Deadwood Creek, tributary of the East Fork, to Cedar Creek Reservoir in 

Salmon Falls Creek basin for irrigation.

Rating tables, water year 1956-57, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 1-10)

Oct. 1 to May 18 May 19 to Sept. 30

2.5

2.6 

2.8 

3.0 

3.2

3.4

5.2

10

3.5 

4.0 

5.0

6.0 

7.0

51

97

197

301

406

2.9 7.0

3.0 9.5

3.2 18

3.5 39

4.0 80

5.0 180

6.0 290

7.2 425

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

4.4

4.4

5.0

5.0

5.0

5.0

5.0

5.2

5.6

6.5

12

12

9.0

8.2

7.7

7.4

7.4

7.9

8.2

7.9

7.9

7.9

8.2

*8.2

9.2

9.7

9.7

9.2

9.0

9.2

10

237.0

7.65

470

Nov.

10

9.7

8.5

9.0

12

13

IT

9.7

9.5

9.5

9.5

9.2

9.5

9.5

9.0

9.7

10

10

8

7

9

9

9

8.5

8.5

8

8

8

8

8

277.3

9.24

550

Dec.

7.5

7

8

*8.5

8

7.5

6.5

6.5

9

14

35

21

16

17

12

13

11

11

10

10

10

8.5

11

11

10

9

9

9

9

10

9

344.0

11.1

682

Calendar year 1956: Max 179

Jan.

9

10

8.5

7

7

7

8

9

8

9

10

11

11

11

*10

8.5

7.5

9

10

11

10

9

9.5

9.5

9.5

9

8.5

7

Q-6

9

276.5

8.92

548

Feb.

9

8.5

8

8

8

8

8

8

8

8

8

8

29

33

30

25

17

18

19

*22

19

46

79

48

32

27

24

22

-

587.5

21.0

1,170

Mar.

20

20

21

21

24

22

43

36

34

33

31

30

28

27

28

28

27

28

27

26

27

27

27

28

30

37

33

*33

34

41

50

921

29.7

1,830

Apr.

56

49

46

43

45

58

75

92

77

79

79

80

77

76

79

83

82

88

96

86

82

76

70

62

61

59

56

54

57

66

2,089

69.6

4,140

May

76

109

161

166

131

138

179

230

271

308

344

335

297

313

*327

376

403

369

*423

397

379

*406

421

413

377

351

334

320

327

297

300

9,278

299

18,400

June

248

220

204

204

192

177

156

149

159

195

139

115

111

99

105

102

85

77

68

66

78

*73

66

58

54

51

53

51

53

52

3,460

115

6,860

July

57

49

44

39

37

32

30

29

26

25

24

23

22

18

16

16

16

15

14

14

14

14

 14

16

I3.

13

14

14

16

16

14

704

22.7

1,400

Aug.

14

14

13

13

12_

12

12

13

13

12

12

12

12

12

12

12

12

13

16

16

14

12

12

*12

12

13

12

12

13

14

14

397

12.8

787

Sept.

13

12

11

9.5 9.5"

9.5

9.0

975

9.0

9.2

9.9

10

11

10

11

11

12

12

15

Ts

14

14

13

13

13

 13

12

9.5

9.9

11

340.0

11.3

674

Min 3.1 Mean 22.3 Ac-ft 16,210

Water year* 1956-57: Max 423 Min 4.4 Mean 51.8 Ac-ft 37,510

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Nov 

Dec. 15, 17, 18, Dec. 21 to Feb. 19, Mar. 14.

1, 3, 4, 14, 15, Nov. 17 to Dec. 11,
BRUNEAU RIVER BASIN

East Fork Bruneau River near Hot Spring, Idaho

Location (revised) . Lat 42°33'25", long 115°30'35", in SWtj-NW^ sec. 15, T. 10 S., R. 8 E., 

on right bank at Winter Camp Ranch, 10 miles upstream from mouth and 20 miles southeast 

of Hot Spring.

Drainage area.--6SO sq ml, approximately.

Records available.--August 1910 to November 1914, February to April 1915, December 1948 

to September 1957.

Gage.--Water-stage recorder. Datum of gage is 3,864.7 ft, datum of 1929, supplementary 

adjustment of 1947 (levels by Topographic Division). Prior to Dec. 10, 1948, staff 

gage at approximately present site at different datum.

Average discharge.--12 years (1910-14, 1949-57), 32.9 cfs (23,820 acre-ft per year).

Extremes.--Maximum discharge during year, 463 cfs May 20 (gage height, 7.12 ft); minimum, 

0~E~cfs Oct. 1 (gage height, 1.49 ft).

1910-15, 1948-57: Maximum discharge recorded, that of May 20, 1957, but may have 

been more during period of ice effect Mar. 7,8, 1911; maximum gage height observed, 

10.8 ft (corrected) Mar. 8, 1911, datum then in use; no flow for long periods during 

irrigation seasons in 1954 and 1955.

Maximum stage known, 16.9 ft, from floodmark, datum then in use, during spring of 

1910.

Correction.--The maximum gage height for water year 1911 has been corrected to 

10.8 ft Mar. 8, 1911, superseding figure published in WSP 413 and 1317.

Remarks. Records good except those below 10 cfs, which are fair, and those for periods 

of ice effect, which are poor. Diversions for irrigation from main stem and tributaries above station. Water diverted from Deadwood Creek, tributary of the East Fork, 

to Cedar Creek Reservoir in Salmon Falls Creek bason for irrigation.

Revisions (water years).--W3P 1397: 1949.

Rating tables, water year 1956-57, except periods of ice effect (gage height,

in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Feb. 24, Apr. 9-24, May 3-19, July 5-17)

Oct. 1 to Feb. 15

1.5 0.5

1.6 1.2

1.7 2.5

2.0 

2.3

Feb. 16 to Sept. 30

.8 3.5 3.0

.9 5.8 4.0

.0 8.8 5.0

.3 20 6.0

.6 36 7.0

62

139

232

338

456

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

~^0.7

.8

1.1

1.1

1.1

1.7

2.0

2.5

2.4

3.6

5.6

14

TT

8.1

7.2

6.4

5.4

5.6

6.2

6.4

6.4

6.6

*6.9

7.2

7.8

8.8

9.1

8.1

8 . 8

9.4

172.8

5.57

343

Nov.

9.7

8.8

8.0

12~6.9

12

13

TS

11

10

10

9.7

10

10

9

9.5

12

11

11

8

10

10

10

10

9.5

9

9

9

9

9

299.1

9.97

593

Dec.

9

8.5

*10

10

10

9

8

7.5 7-^

11

19

30

38

20

21

15

16

13

12

11

11

9

11

11

10

10

9

9

8

10

10

393.5

12.7

780

Jan.

10

10

~911

7

7

7

8

9

8

9

10

11

10

*9.5

9

8

7

8

9

10

9

8.5

9

9

9

8

7.5

6.0

5.5

T75

265.5

8.56

527

Feb.

8

8

7.5

7

7

7

7

7

7

7

7

7

*7

8

20

35

25

20

22

25

23

40

52

~S5 115

53

43

36

-

675.5

24.1

1,340

Mar.

32

31

282-3-

29

31

32

42

47

45

39

38

36

32

28

35

34

32

32

31

30

30

30

29

*30

30

35

34

33

34

38

1,031

33.3

2,040

Apr.

46

53

49

45

42

44

52

65

91

78

76

78

78

74

72

73

80

83

86

105

93

86

*75

70

60

56

52

50

48

47

2,005

66.8

3,980

May

53

57

84

129

164

147

137

162

203

236

274

302

313

*280

283

303

337

396

376

422

*416

385

415

438

425

382

353

336

324

328

309

8,774

283

17,400

June

308

27T

244

229

225

213

*199

181

172

182

206

165

134

125

115

117

114

94

83

70

67

75

74

66

58

53

49

48

43

45

4,025

134

7,980

July

45

4743-

40

35

33

30

24

23

*22

20

20

19

20

17

15 ' 12

12

11

11

10

9.9

7.3

6.7 r^

8.8

8.2

7.6

8.5

10 9' 5 

592.8

19.1

1,180

Aug.

10

8.8

9.2

7.6

7.3

7.3

7.0

7.3

7.3

6.4

6.4

7.0

6.7

7.0

7.3

6.7

7.0

7.6

7.6

*7.6

10

11^T.9

4.6

4.9

4.4

5T5

7.9

10

9 '.9

234.9

7.58

466

Sept.

12

11

9.2

8.2

7.6

6,1

6.4

5,6

5.3

5^

5.8

6.1

7.0

8.5

8.5

8.5

8.5

8.8

9.9

11

14

IT

12

11

11

11

9.9

9.5

9.5

8,8

269.3

8.98

534

Calendar year 1956: Max 144 Mln 0.2 Mean 21.2 Ac-ft 15,370

Water year 1956-57: Max 438 Min 0.7 Mean 51.3 Ac-ft 37,160

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov 3, 7-10, Nov. 14 to Feb. 22.
130 BRUNEAU RIVER BASIN

Bruneau River near Hot Spring, Idaho

Location. Lat 42°46'17", long 115°43'10", in SE^ sec. 34, 1 7 S., R. 6 E. , on right 

bank at Dunham Ranch, 1 mile downstream from Hot Creek, l| miles south of Hot Spring 

Post Office, 9 miles southeast of Bruneau, and 19 miles (revised) downstream from East 

Fork.

Drainage area. 2,010 sq mi, approximately.

Records available. --July 1909 to March 1915, October 1943 to September 1957.

. gage at present site and datum.

Average discharge. --19 years (1909-14, 1943-57), 408 cfs (295,400 acre-ft per year).

Extremes . Maximum discharge during year, 4.080 cfs May 20 (gage height, 9.86 ft); minimum, 40 cfs Dec. 9 (gage height, 3.45 ft).

1909-15, 1943-57: Maximum discharge, 6,500 cfs (revised) Mar. 1, 1910 (gage height, 

13.0 ft, present site and datum), from floodmark, from rating curve extended above 

1,200 cfs; minimum observed, 40 cfs Jan. 23, Nov. 29, 1911, Dec. 9, 1956.

Revisions. Maximum discharge observed for the water year 1910 has been revised to 

6,500 cfs Mar. 1, 1910 (gage height, 13.0 ft, present site and datum), superseding 

figure published in WSP 292 and 1317.

Remarks . Records excellent. Several small reservoirs on tributaries above station. 

Diversions above station for irrigation of about 8,500 acres.

Revisions (water years ) .--WSP 1063: 1913.

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, in cubic feet per second) 

(Shifting-control method used Sept. 3-30)

3.5 46 5.5 715

3.8 94 6.0 1,030

4.2 185 7.0 1,700

4.6 316 8.0 2,430

5.0 481 10.0 4,140

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

TotaJ

Mean

Ac-ft

Oct.

64

64

65

65

65

65

65

65

67

69

75

81

113

107

96

92

88

86

86

86

86

86

*88

92

92

96

100

117

128

154

119

2,692

86.8

5,340

Nov.

119

115

109

104

109

119

119

126

133

135

133

130

128

128

117

102

124

119

111

81

50" 75

88

92

92

88

88

86

84

79

3,223

107

6,390

Dec.

75

86

*92

109

122

109

86

50" 49

87

135

165

362

477 4SB"

270

240

188

170

162

128

109

98

113

142

113

79

83

84

79

102

4,632

149

9,190

Jan.

102

107

100

98

84

77

55

84

88

79

88

113

124

139 133"

»115

92

59

55

98

113

107

98

96

92

83

67

52

g]_

79

2,807

90.5

5,570

Feb.

113

126

117

113

109

107

TOT

111

115

115

113

111

*117

119

222

435

451

355

280

294

347

328

672

1.040

921

974

*843

973

_

9,728

347

19,300

Calendar year 1956: Max 2,390 Min 49

Mar.

574

430

384

324

294

320

309

610

794

74T

561

438

409

332

280

320

324

277

280

280

309

343

305

273

*2?3~

305

468

388

359

400

579

12,284

396

24,360

Me£

Apr.

516

477

421

4BT

421

481

812

700

680

695

759

788

776

776

824

MB" 862

764

764

737

720

700

*690

665

650

602

566

543

592

742

19,992

666

39,650

May

908

1,050"

1,190

1,160

1,080

1,100

1,300

1,530

1,790

1,870

1,890

1,990

2,020

*2,040

1,920

1,880

2,020

2,130

2,760

5.920

*3,140

2,640

2,550

2,500

2,320

2,150

2,100

2,150

2,190

2,250

2, 380

61,918

1,997

122,800

June

2,300

2,300

2,350

2,430

2.450

2,430

*2,230

*2,000

1,900

1,830

1,610

1,390

1,300

1,230

1,120

1,040

940

818

759

WS

895

869

824

812

830

876

876

895

934

882

41,926

1,398

83,160

July

824

737

680

606

566

516

494

468

434

*404

376

359

343

320

309

287

263

249

236

224

211

200

194

182

180

168

160

158

153

148

144

10,593

342

21,010

Aug.

137

135

130

128

124

119

115

113

111

109

104

100

98

96

92

90

88

86

86

*84

81

81

83

81

77

75

75

73

77

84

90

3,022

97.5

5,990

Sept.

F 88

88

88

84

81

79

77

73

73

72

73

75

77

77

77

77

79

79

79

86

96

51

92

90

88

86

84

81

81

81

2,455

81.8

4,870

n 378 Ac-ft 274,700

Water year 1956-57: Max 3,920 Min 49 Mean 480 Ac-ft 347,600

* Discharge measurement made on this day.
SNAKE RIVER MAIN STEM 131

C. J. Strike Reservoir near Grand View, Idaho

Lat 42°56'45", long 115°58'35", In SW£ sec. 34, T. 5 S., R. 4 E. , at dam on Snake 

River, 1 mile downstream from Bruneau River and 7 miles southeast of Grand View. Records 

available, March 1952 to September 1957. Remote registering water-stage recorder In 

channel leading to Grand View Irrigation District canal. Datum of gage Is at mean sea 

level (levels of Idaho Power Co.).

Reservoir is formed by earth-fill and rock-faced dam. Storage began In February 1952. 

Total capacity, 250,000 acre-ft at elevation 2,455 ft (top of spillway gates), of which 

about 50,000 acre-ft will be controlled storage. Reservoir is used for power generation 

in plant of Idaho Power Co. Elevations and area-elevation curve furnished by Idaho 

Power Co.

Month-end elevations and total conten 

to September

,ts at 12 p.m. 

1957

October 1956

Date

Nov. 30. .......................... .. . ...

Feb. 28. ....................................

Mar. 31. ....................................

July 31 .....................................

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

Elevation 

(feet)

2,454.22

Contents 

(aore-feet)

249 900

244,200

Snake River near Murphy, Idaho

Location. Lat 43°18' , long 116°26' , in NE£ sec. 35, T. 1 S. , R. 1 W. , on right bank 

4-i miles downstream from Swan Falls powerplant and 1\ miles northeast of Murphy.

Drainage area. 41,900 sq ml, approximately.

Records available. August to October 1912, August 1913 to September 1957.

Gage. Water-stage recorder. Datum of gage is 2,271.17 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Sept. 7, 1914, staff gage and 

Sept. 7, 1914, to Sept. 30, 1935, water-stage recorder, at site 3f miles upstream at 

datum 9.79 ft higher.

Extremes. Maximum discharge during year, 34,700 cfs May 23 (gage height, 11.84 ft); minimum, 6,860 cfs Aug. 28 (gage height, 3.55 ft); minimum daily, 7,130 cfs July 14.

1912-57: Maximum discharge, 47,300 cfs June 22, 1918 (gage height, 13.95 ft, site 

and datum then In use); minimum recorded, 3,900 cfs July 9, 1949 (gage height, 2.53 ft); 

minimum dally, 5,440 cfs Aug. 4, 1914.

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

good. Flow regulated by many reservoirs upstream. Between this station and station 

at King Hill, flow is regulated at Swan Falls and by C. J. Strike Reservoir (see above) 

and by gravity and pumping diversions. About 1,630,000 acres irrigated by diversion 

from river and its tributaries above station.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

TotaJ

Mean

Ac-ft

Oct.

10,100

9,720

9,720

10,400

10,800

12,000

12,400

12,500

11,100

»9,570

9.420 

10,100

12,500

13,000

12,700

12,500

12 , 500

10,600

10,200

11,100

11,000

9,600

10,100 

12,100 

12,600

13,400

11,800

11,000

11,600

11,900 

11,200

349,130

11,260

692,500

Nov.

11,100

10,700

12,100

11,300

12,100

11,500

12 , 600

12,700

12.800

12,000

9,660 

11,800

12,200

12,100

» 12, 300

11,000

8,910

7.800

9,450

10,700

11,300

10,900

9,840 

10,600 

11,200

10,700

11,600

1 1 , 600

12,100

12,100

336,760

11,230

668,000

Dec.

11,000

11,500

9,900

9,660

10, 900

11,000

11,700

11,900

10,100

10,900

11,400 

10,100

10,300

10,700

11,000

11,400

11,500

10,900

11,200

*11,400

12,200

14.200

11,900 

8.790 

9,150

9,210

11,600

13,300

13,300

11,200 

10,400

343,710

11,090

681,700

Jan.

11,600

11,000

12,900

13,100

12,800

11,400

11,600

12,300

12,000

12,500

12,100 

11,300

9,150

8,060

11,300

12,700

11,700

12,900

13.500

12,100

10,800

13,100

10,400 

10,100 

9,840

10,100

10,100

8,240

a!3,200

a!2,100 

a9,000

352,990

11,390

700,100

Feb.

89,300

a!4,200

a9,000

9,720

11,800

12,800

*11,600

11,500

11,400

9,990

6.120 

10,200

12,600

10,500

9,000

9,450

11,500

10,600

12,000

10,900

11,500

10,200

11,300 

11,400 

12,300

15,400

17.000

16,100

-

321,380

11,480

637,400

Mar.

15.100

13,900

14,200

13,700

10,300

12,700

14,500

13,300

14,400

14,800

13,800

14,600

14,800

14,500

14,200

14,500

11,700

*10, 100

14,400

14,800

14,600

12,800

13,000 

12,100 

11,300

13,800

14,200

13,000

11,400

12,400 

10,700

413,600

13,340

820,400

Apr.

13 , 300

17,700

20,600

18,100

16,500

16,300

16,200

15,300

14,400

13,900

13,500 

14,100

14,300

13,400

12,800

14,900

»14,400

14,400

14,400

15,000

14,000

14,100

15,200 

16 , 000 

14,100

15,200

13,800

15,400

14,200

14,100

449,200

14,970

891,000

May

10,300

9,570

9,720

11,900

11,500

11,500

11,800

12,900

13,500

12,800

14,100 

11,100

14,100

19,900

*20,200

22 , 500

23,200

22,700

23,200

28,100

29,700

30,200

31,500 

29,200 

28,800

28,000

*27,400

26,000

23,600

20,100 

20,200

609,290

19,650

*1,209

June

19.500

17,800

17,300

17,700

17,500

13,800

12,700

12,700

13,800

13,900

10,600 

10,800

10,500

10,700

10,100

9,510

10,700

10,700

10,900

9,900

»9,000

8,850

7.190 

7,190 

8,380

9,120

9,600

8,730

7,750

8,610

345,530

11,520

685,300

July

,470

,750

,980

,950

,220

,610

,750

,410

7,770

7,720

8.380 

7,690

7,500

7 . 130

7,780

7,920

7,220

7,330

8,090

7,550

7,550

8,000

*7,580 

7,920 

7,550

8,120

7,750

7,950

7,690

8,150 

8,030

239,210

7,716

474,500

Aug.

7,610

7,890

8,350

8,820

8,000

7,860

7,750

8,440

8,470

8,530

8,180 

7,860

8,790

7,550

7,640

8,210

8,060

8,880

8,090

8,470

8,670

7,860

7,500 

8,270 

7,350

7,860

8,530

*7,640

8.940

8,270 

8,350

252,670

8,151

501,200

Sept.

8,640

8,730

8.580

8,610

8,820

9,000

8,850

8,610

8,700

9,330

8,610 

8,760

9,210

9,650

9,180

9,480

9,330

8,880

9,990

9,780

9,840

10,100

10,100 

9,870 

10,100

10.400

9,780

9,450

9,660

9,720

279,740

9,325

554,900

Calendar year 1956: Max 33,800 Min 7,130 Mean 12,610 Ac-ft 9,157,000

Water year 1956-57: Max 31,500 Min 7,130 Mean 11,760 Ac-ft 8,516,000

* Discharge measurement made on this day. * Expressed in thousands.

a No gage-height record; discharge estimated on basis of powerplant records at Swan Falls furnished by Idaho Power Co.
132 OWYHEE RIVER BASIN

Wild Horse Reservoir near Gold Creek, Nev.

Location. Lat 41°41'10", long 115"51 "20", in NEijNWij sec. 25, T. 44 N. , R. 54 E. , at 

Wild Horse Dam on Owyhee River, 8 miles west of Gold Creek and 12 miles southeast of 

Mountain City.

Drainage area.--209 sq mi.

Records available --March 1938 to September 1957. Month-end contents for some periods, 

published in WSP 1317.

Gage.--Gage readings obtained about twice a month from reference point on dam. Datum of 

gage is 6,109.18 ft above mean sea level (levels by Office of Indian Affairs).

Extremes. Maximum contents observed during year, 33,990 acre-ft Apr. 16 (gage height, 

80.7 ft); minimum observed, 16,460 acre-ft Oct. 25.

1938-57: Maximum contents observed, 35,630 acre-ft Apr. 29, 1952 (gage height, 

81.56 ft); no contents at times during each year 1938-41.

Remarks.--Reservoir is formed by concrete-arch dam; storage began Mar. 18, 1938. Capacity, 32,690 acre-ft between gage height 20.0 (sill of outlet gate) and 80.0 ft (spillway crest). No dead storage. Water is used for irrigation on Duck Valley project.

Cooperation. Most of gage-height record and base data for capacity table furnished by 

Office of Indian Affairs.

Capacity table, water year 1956-57 (gage height, in feet, 

and total contents, in acre-feet)

69.0

70.0

72.0

74.0

16,160

17,370

19,965

22,790

76.0

78.0

80.0

81.0

25,850

29,150

32,690

34,550

Total contents, in acre-feet, water year October 1956 to September 1957

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

NM

Oct.

_

-

-

17,250

_

-

-

-

_

17,010

_

_

-

_

_

_

16,640

-

_

-

-

-

16,460

_

-

-

_

al6,SOO

_

-1,100

Nov.

_

16,640

-

-

_

-

16,700

-

_

-

_

_

-

16,760

_

_

' _

-

_

-

1)16,810

-

-

_

_

-

_

16,890

69.6

+290

Dec.

_

-

-

-

17,010

-

-

-

_

-

17,370

_

-

_

_

_

_

-

_

-

-

-

-

_

_

-

_

b!7,680

70.5

+790

Jan.

_

-

_

-

_

17,880

-

-

_

-

_

_

-

_

_

_

_

-

_

-

-

_

-

_

_

_

-

a!8,550

.

+870

Feb.

18,580

-

_

-

_

-

-

-

_

-

_

_

-

_

_

_

_

-

_

-

19,440

_

-

_

_

325,120

_

.

+6,570

Mar.

26,260

-

-

-

_

-

-

-

_

_

_

_

-

_

_

.

_

-

_

-

_

_

-

_

_

-

30,540

331,160

.

+6 , 040

Apr.

_

-

-

-

_

33,620

-

-

_

-

_

_

-

33,990

_

_

_

-

_

-

_

_

-

_

-

-

-

333,680

.

+2,520

May

_

-

33,620

-

_

-

-

-

_

_

_

_

-

_

_

_

_

-

_

-

-

-

-

_

_

-

-

333,380

.

-300

June

_

-

-

33,340

_

-

-

-

_

-

_

_

-

_

_

_

_

-

_

-

-

_

-

_

-

31,430

_

330,800

.

-2,580

July

_

-

-

-

_

-

-

27,640

_

-

_

_

-

_

_

_

_

-

_

-

-

_

-

_

-

-

-

324,380

_

-6,420

Aug.

_

-

-

-

_

-

-

-

_

-

_

22,210

-

_

_

_

-

-

.

-

-

_

-

_

-

-

-

a20,210

_

-4,170

Sept.

_

-

-

-

19,500

-

-

-

_

-

18,640

_

-

_

_

_

_

-

_

-

17,500

_

-

_

-

-

-

317,090

_

-3,120

t Qsge height, in feet, at end of month.

t Change in contents, in acre-feet.

3 No gage reading; contents interpolated.

b Contents computed from gsge readings corrected for ice cover.
OWYHEE RIVER BASIN 133

Owyhee River near Gold Creek, Nev.

Location. Lat 41°41 I 10", long 115°51'30", in NW^NW^- sec. 25, T. 44 N. , R. 54 E. , on 

right bank 500 ft downstream from Wild Horse Dam, 8 miles west of Gold Creek, and 

12 miles southeast of Mountain City.

Drainage area.--209 sq mi.

Records available.--March to November 1916, April 1917 to September 1925, October 1936 

to September 1957. Monthly discharge only for some periods, published in WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 6,130 ft (from topographic map). Prior 

to Oct. 1, 1936, at site a quarter of a mile upstream at different datum.

Average discharge.--29 years (1917-25, 1936-57), 43.4 cfs (31,420 acre-ft per year), 

unadjusted.

Extremes.--Maximum daily discharge during year, 352 cfs May 20; no flow Nov. 1 to Apr. 4. 

1916-25, 1936-57: Maximum discharge, 1,810 cfs May 5, 1922 (gage height, 10.11 ft, 

site and datum then in use), from rating curve extended above 400 cfs; no flow at 

times when reservoir gates are closed.

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

fair. Small diversions above station for irrigation. Flow regulated by Wild Horse 

Reservoir beginning Mar. 18, 1938 (see preceding page).

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 6-25)

0.4 

.5

1.1 

1.3

1.7 

1.9

3.0 123

5.5 221

4.1 352

Discharge, in cubic feet per second, water year October 1956 to September 1957

D8.y

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

Total

Mean

Ac-ft

Oct.

35

35

35

35

32

29

29

29

29

29

24

21

21

21

21

20

19

19

19

19

19

10

1.5

1.5

 1.4

al.2

al.O

a. 8

a. 6

a. 4

a. 2

558.6

18.0

1,110

Nov.

0

0

0

Dec.

(*)

0

O

0

Jan.

(*)

0

0

0

Feb.

(*)

-

0

0

0

Mar.

0

0

0

Apr.

0

O

0

o

aSO

a 100

a 140

*162

178

210

206

242

236

236

250

*242

219

208

198

190

184

176

164

154

147

134

127

125

132

139

4,559

152

9,040

May

149

156

*160

164

156

149

149

156

162

168

184

204

204

196

188

188

186

184

287

552

327

305

281

252

223

198

182

166

160

156

156

6,148

198

12 , 190

June

147

134

121

*111

100

87

78

72

71

82

81

72

64

57

52

50

48

45

41

57

71

62

54

72

116

158

TSa

<158

158

158

2,735

91.2

5,420

July

158

158

158

158

158

158

158

158

120

*92

92

92

92

92

92

82

67

67

67

67

67

67

67

67

67

63

54

54

54

54

50

2,954

95.3

5,860

Aug.

54

54

53

53

53

53

53

53

53

53

52

52

52

*52

52

52

52

52

51

51

51

51

51

51

50

50

50

50

50

50

50

1,604

51.7

3,180

Sept.

50soso

50

50

50

50

50

50

50

50

50

49

49

49

49

49

49

49

41

34

34

*34

34

34

34

26

21

2T

22

1,278

42.6

2,530

Calendar year 1956: Max 136 Min 0 Mean 21.1 Ac-ft 15,300

Water year 1956-57: Max 352 Min 0 Mean 54.3 Ac-ft 39,330

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of engineers' and observer's notes
134 OWYHEE RIVER BASIN

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

Location. Lat 41°55'20", long 116°04'10", in NW^- sec. 6, T. 46 N. , R. 53 E. , on right 

bank 1,000 ft downstream from Skull Creek, 1 mile upstream from China diversion dam, 

and 2 miles southeast of Owyhee.

Drainage area. 458 sq mi.

Records available. March 1939 to September 1957.

Gage. Water-stage recorder. Datum of gage is 5,425 ft above mean sea level, unadjusted.

Average discharge.--18 years, 147 cfs (106,400 acre-ft per year).

Extremes. Maximum discharge during year, 1,450 cfs May 19 (gage height, 9.34 ft); minimum not determined, occurred during period of ice effect.

1939-57: Maximum discharge, 2,710 cfs May 3 or 4, 1952 (gage height, 10.07 ft); 

minimum daily, 2 cfs Sept. 15-18, 1940.

Remarks. Records good except those for~ periods of ice effect, which are fair. Numerous 

diversions above station for irrigation. Flow partly regulated by Wild Horse Reservoir (see p. 132).

Rating table, water year 1956-57, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Oct. 1-30, Nov. 5-13, 17,

Feb. 25 to May 8, June 19 to July 19)

1.0 

1.3 

1.6 

Z.O

9.3

63

3.0 

4.0 

5.0

6.0

140

232

341

476

7.0

1,050

1,350

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

B

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

Total

Mean

Ac-ft

Oct.

42

42

42

43

44

42

40

40

41

41

52

50

45

42

41

40

38

38

38

38

38

38

34

23

*li

30

36

30

24

23 

22

1,158

37.4

2,300

Nov.

21

21

21

22

24

27

27

24

22

22

21

20

22

18

20

22

21

> 21

648

21.6

1,290

Dec.

21

22

22

21

20

16

14

10

12

20

80

200

*145

90

50

35

27

25

22

20

18

20

22

21

20

20

20

21

21

20 

20

1,095

35.3

2,170

Jan.

(«)

> 17

527

17.0

1,050

Feb.

17

IT

17

17

18

19

20

23

22

21

23

25

28

40

65

60

55

60

70

65

100

200

*380

350

420

303

*361

212

-

3,008

107

5,970

Mar.

157

139

121

121

153

152

334

442

336

262

206

187

154

142

144

131

119

129

134

139

152

127

118

T2T

181

225

165

164

192

281 

254

5,687

183

11,280

Apr.

266

241

255

229 ?59~

490

501

*485

505

557

598

611

603

619

666

*656

594

572

547

523

504

501

476

464

424

399

384

401

464

532

14,326

478

28,420

May

578

640

*652

598

562

611

692

787

854

864

859

918

*1,010

976

912

902

880

902

1,220

1,520

1,230

1,140

1,070

994

920

857

809

778

740

707

703

26,685

861

52,930

June

646

602

557

*518

482

437

394

364

347

370

318

291

271

242

244

241

208

185

158

153

188

174

156

146

T65

207

226

*228

233

230

8,981

299

17,810

July

225

213

207

201

198

190

190

188

185

*134

123

114

116

113

113

113

98

90

90

84

83

85

85

84

83

80

77

74

73

72" 72 

3,853

124

7,640

Aug.

70

71

70

70

68

67

67

66

66

64

60

58

57

*55

53

53

55

53

54

53

54

55

55

53

55

54

53

54

54

54 

55

1,826

58.9

3,620

Sept.

55

55

55

54

55

55

54

53

54

55

56

55

56

56

57

57

57

60

64

62

55

48

*47

47

46

45

44

38

34

34

1,563

52.1

3,100

Calendar year 1956: Max 753 Min 10 Mean 132 Ac-I't 96,180

Water year 1956-57: Max 1,320 Min 10 Mean 190 Ac-ft 137,600

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Oct. 31 to Nov. 4, Nov. 14-16, Nov. 18 to Feb. 24.
OWYHEE RIVER BASIN 135

South Pork Owyhee River near Whiterock, Nev.

Location. Lat 41°48' , long 116°29", in NEir sec. 16, T. 45 N., R. 49 E., on left bank 

500 ft downstream from Rye Grass Creek, Iff- miles upstream from Chimney Creek, and 

17 miles northwest of Whiterock.

Records available. October 1955 to September 1957. 

Gage. Water-stage recorder.

Extremes. Maximum discharge during year, 3,420 cfs May 20 (gage height, 7.17 ft); minimum, 1.8 cfs Sept. 3.

1955-57: Maximum discharge, that of May 20, 1957; no flow Oct. 1-12, 1955.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Diversions above station for irrigation.

Rating table, water year 1956-57, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Feb. 23, 24, Mar. 1

to Apr. 20, Apr. 23 to May 9)

1.7

1.8

1.9

2.0

0.8 

2.7 

6.6

2.5

3.0 

4.0 

5.0 

7.0

171

345

860

1,550

3,270

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

6.0

»5.0 "STO"

5.5

5.5

6.0

6.0

5.5

6.0

6.6

9.5

12

17

20

16

13

12

11

11

14

24

33

37

35

33

33

35

33

30

27

26

538.6

17.4

1,070

Nov.

25

?5

25

31

35

39

*39

39

39

37

37

35

39

36

36

39

42

37

35

> 33

1,034

34.5

2,050

Dec.

33

35

36

35

32

29

25

20

?T

«23

40

100

170

300

250

120

70

40

35

30

28

30

32

30

28

28

28

28

29

30

28

1,763

56.9

3,500

Jan.

(»)

> 26

806

26.0

1,600

Feb.

Si- 26

ze

26

27

28

29

32

31

30

32

34

36

60

100

90

80

90

95

90

150

 355

408

470

324

282

«324

260

-

3,561

127

7,060

Mar.

192

17-1. TSe

201

399

404

69"B~ 701

555

417

333

300

271

204

227

253

260

320

372

304

286

289

271

300

354

560

465

408

386

435

465

10,985

354

21,790

Apr.

640

575

555

505

*465

545

590

545

500

475

470

485

480

470

470

455

465

515

668

745

824

MI

734

646

580

530

485

445

412

 404

16,502

550

32,730

May

475 5"g5"

555

635

657

580

535

605

750

830

956

1,720

*2,300

1,800

1,530

 1,480

1,330

1,260

2,430

*3.160

2,560

2,130

1,960

1,640

1,350

1,140

1,020

956

896

974

993

39,742

1,282

78,830

June

914

ST2

762

740

750

718

 646

600

600

740

657

510

445

363

430

408

337

220

227

217

214

198

183

171

154

139

 134

134

T39~ 131

12,693

423

25,180

July

122

136

177

142

128

111

100

98

98

 95

90

87

84

84

82

79

77

77

71 ' 71

71

71

71

69

69

69

69

71

71

69

64

2,773

89.5

5,500

Aug.'

59

54

49

47

42

35

27

27

25

25

25

24

 22

20

20

19

17

13

5.0

3.9

3.9

3.6

3.6

3.2

2.7

2.7

2.7

2.2

775

2 z'.i.5

591.2

19.1

1,170

Sept.

2.5

2.2

2.0

275

2.7

2.7

3.0

3.0

2.7

3.0

3.2

3.6

3.0

3.0

3.9

3.6

6.6

11

12

14

14

 14

12

12

12

12

12

17

20

25

240.2

8.01

476

Calendar year 1956: Max 1,330 Min 5.0 Mean 142 Ac-ft 103,200

Water year 1956-57: Max 3,160 Mln 2.0 Mean 250 Ac-ft 181,000
136 OWHIEE RIVER BASIN

Jordan Creek above Lone Tree Creek, near Jordan Valley, Oreg.

Location. Lat 42-52', long 116 °57', in SE^NE^ sec. 29, T. 6 S. , R. 5 W. , on right bank 

half a mile downstream from proposed dam site, 0.6 mile upstream from Morgan Ranch 

house, 1 mile downstream from Williams Creek, 4 miles upstream from Lone Tree Creek, 

and 9 miles southeast of Jordan Valley.

Drainage area. 440 sq mi, approximately.

Records available . April 1955 to September 1957. October 1945 to January 1953 at site 

2 miles downstream; records equivalent except during late summer months when considerable difference may result from irrigation and return flow between sites.

Gage. Water-stage recorder. Datum of gage is 4,501.98 ft above mean sea level (levels by 

Bureau of Reclamation). Prior to June 14, 1952, water-stage recorder and June 14, 1952, 

to Jan. 31, 1953, staff gage, at site 2 miles downstream at datum 30.45 ft lower.

Average discharge. --9 years (1945-52, 1955-57), 217 cfs (157,100 acre-ft per year).

Extremes. Maximum discharge during year, 2,870 cfs Feb. 23 (gage height, 8.07 ft); minimum, 3.0 cfs Oct. 6, 7-9, 10, Sept. 30; minimum gage height, 1.40 ft Oct. 6, 7-9, 10.

1945-53, 1955'57: Maximum discharge, 3,250 cfs Apr. 14, 1952 (gage height, 5. 57. ft, 

site and datum then in use); no flow part of each day Oct. 4, 5, 1948.

Remarks. Records fair except those for periods of ice effect, which are poor. 

above station for irrigation.

Diversions

Rating tables, water year 1956-57, except periods of ice effect (gage height,

in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 5-26, Nov. 16 to Dec. 22, Feb. 1-26)

Oct. 1 to Nov. 15 Nov. 16 to Sept. 30

1.5

1.6 

1.8 

2.1 

2.4 

2.7

3.0

4.0

8.0

18

37

69

1.5

1.6

1.7

1.8 

2.0 

2.3 

2.6

2.1 

3.3 

5.4 

9.0

3.0 

3.5 

4.0 

5.0 

6.0 

7.0

160

291

460

925

1,580

2,430

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

TotaJ

Mean

Ac-ft

Oct.

5.2

5.2

4.4

3.1

3.2

3.1

3^0

5T<3

*3.0

3.2

5.0

6.0

5.4

4.2

4.0

4.0

4.0

5.2

16

18.

16

16

18

20

19

55

79 

49

37 

38

46

501.2

16.2

994

Nov.

36

34

34

37

36

41

47

48

45

46

47

46

45

*42

29

45

45

45

27 

27

32

34

32

29

26

27

26 

26

27

1,089

36.3

2,160

Dec.

25

29

32

32

30

26

25

24

3ff

35

150

286

24?

270

165

147

106

108

*88 

74

77

61

65

55

52

50

48 

46

44 

42

40

2,511

81.0

4,980

Jan.

38

36

34

31

28

30

32

30

28

36

38

40

45

38

34

30

25

30

35 

35

30

25

28

30

27

25

25 

25

23 

24

27

957

30.9

1,900

Feb.

30

31

28

25 25-

*27

30

33

34

35

37

40

45

55

190

178

143

106

117 

154

131

696

1,300

1,240

*1,270

1,730

 2,110 §5B~

-

10,777

385

21,380

Calendar year 1956: Max 2,490 Min 2.2

Mar.

715

656

516

496

670

737

1.170

1,090

980

697

*560

634

468

372

386

414

380

372

376 

404

439

358

316 5£2"

422

472

404 

394

464

638 

674

16,996

548

33,710

Apr.

625

508

480

460

55(7

1,070

750

688

720

848

980

986

980

1,050

1,050

*947

876

805

735 

674

643

674

688

670

594

544

528 

584

720

*876

22,313

744

44,260

May

952

986

*969

848

795

785

930

1,010

1,060

1,090

1,180

1,450

1,380

1,310

1,110

1,060

1,040

1,140

1.500 

*1,360

1,100

964

864

775

710

684

674 

666

648

652 

630

30,322

978

60,140

June

625

55(7

520

461

450

397

348

306

279

250

210

183

162

158

169

195

*160

145

137 

131

127

119

93

85

81

74

72 

78

78

11

6,724

224

13,340

July

66

63

59

53

48

45

42

28

*36

35

34

35

30

24

21

21

21

20

16 

4.6

3.5

3TS

.8

.8

.6

.6

.6 

.8

5.1

4 .8

5.1

752.1

24.3

1,490

Aug.

*4.7

4.6

4.8

4.8

4.8

- 4.6

4.8

5.1

4.8

4.8

5.1

4.8

4.8

4.6

4.4

4.8

4.4

4.4

4.8 

4.6

4.4

4.6

4.6

4.8

4.8

5.1

5.1 

3.8

3TS

3.8

3.8

143.1

4.62

284

Sept.

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

*3.7

3.5

3.5

3.3

3.3

3.3

3.3

3.3

3.5

3.6

3.8

4.0

4.0

4.0

4.0

4.0

3.8

3.6

4.2

4.4

3^

3.2

111.3

3.71

221

Mean 266 Ac-ft 192,800

Water year 1956-57: Max 2,110 Min 3.0 Mean 255 Ac-ft 184,900

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 6-11, Dec. 23 to Feb. 15.
OWYHEE RIVER BASIN 137

Owyhee River near Rome, Oreg.

Location.--Lat 42°52', long 117 038', in NE£ sec. 14, T. 31 S., R. 41 E. , on right bank 

half a mile downstream from Jordan Creek and 2| miles north of Rome.

Drainage area.--About 8,000 sq mi.

Records available. October 1949 to September 1957.

Gage. Water-stage recorder. Datum of gage is 3,343.96 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947.

Average discharge. 8 years, 981 cfs (710,200 acre-ft per year).

Extremes. Maximum discharge during year, 16,200 cfs Feb. 27 (gage height, 12.03 ft); minimum, 82 cfs Sept. 17 (gage height, 0.76 ft).

1949-57: Maximum discharge, 27,800 cfs Apr. 14, 1952 (gage height, 15.60 ft); minimum, 42 cfs Aug. 12, 1954.

Flood of Apr. 14, 1952, reported by local resident as highest in 70 years.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Plow regulated by Antelope Reservoir (capacity, 36,600 acre-ft), Wild 

Horse Reservoir (see p. 132), and numerous small reservoirs. Diversions above station 

for irrigation.

Rating tables, water year 1956-57, except period of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Feb. 27 Feb. 28 to Sept. 30

0.9 80

1.0 102

1.5 230

2.0 390

3.0 850

4.0 1,540

Note.--Same as following 

table above 4.0 ft.

0.7 

1.0 

1.5 

2.0 

3.0

72

127

250

410

4.0

5.0

7.0

9.0

11.0

1,540

2,470

5,480

9,100

13,500

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

89 

B9

87

3T

93

93

93

95

95

95

110

114

117

120

122

120

*117

120

130

132

130

127

120

124

124

130

144

TTO" 190

167

180

3,728

120

7,390

Nov.

192 

197

219

213

213

184

227

299

302

260

254

239

227

222

210

200

200

210

200

180

160

150

150

150

150

150

140

130

120 

T55

5,868

196

11,640

Dec.

120 

120

130

140

150

140

130

120

110

100

*177

855

2,100

2,410

1,930

1,400

1,000

765

582

458

362

305

245

260

300

250

220

200

200

210

220

15,709

507

31,160

Jan,

250" 240 

200

190

180

150

170

160

150

150

160

170

180

170

160

150

140

140

150

160

160

150

*145

140

130

120

110

100

130

110

130

4,785

154

9,490

Feb.

130 

125

140" 120

150

155

154

160

160

162

164

174

190

242

554

720

1,180

1,540

1,400

1,400

1,440

1,890

5,410

7,600

8,020

* 10, 500

15.200

9,690

-

66,770

2,385

132,400

Mar.

5,890 

3,870

2,900

2,160

2,570

4,290

5,500

8,580

6, 990

5,110

3,620

2,660

2,550

,090

,800

,640

,650

,820

,820

,010

,100

,960

,720

,490

,470

2,160

2,140

2,050

1,840

2,070

2,170

90,270

2,912

179,000

Apr.

2,390 

2,480

2,320

2,100

2,050

2,230

2,650

2,730

2,510

*2,420

2,460

2,510

2,550

2,550

2,550

2,560

2,480

2,400

2,570

2,650

3,050

5,560

3,360

2,760

2,450

2,260

2,120

2,090

1,990

1,920

74,720

2,491

148,200

May

1,950 

1,980

2,120

2,300

2,390

2,450

2,390

2,270

2,370

2,690

3,570

5,960

5,680

6,230

5,450

4,940

4,460

4,260

4,660

9,750

9,620

7,100

6,010

5,700

4,950

4,320

5,810

5,430

5,150

2, 880

*2,730

129,550

4,173

256,600

June

2,720 

2,556

2,510

2,100

1,980

1,800

1,700

1,600

1,500

1,400

1,400

*1,400

1,500

,200

,100

,050

,000

,000

980

950

920

900

800

750

700

650

600

550

500 '5730"

57,910

1,264

75,190

July

450" 480 

400

380

350

320

500

500

300

500

300

300

300

300

300

300

500

500

500

500

500

500

300

300

500

500

300

280

260

250

g40

9,710

315

19,260

Aug.

220

25o

180

170

160

140

*155

158

125

121

121

121

115

115

115

109

109

107

107

107

107

*105

105

99

99

98

98

9698"

96

96

3,806

123

7,550

Sept.

98

98

96

96

96

92

90

86

86

85

85

85

85

85

85

85

SB- 85

88

92

94

96

99

99

101

105

T6T

105

105

105

2,785

92.8

5,520

Calendar year 1956: Max 17,300 Mln 74 Mean 1,091 Ac-ft 792,000

Water year 1956-57: Max 13,200 Mln 83 Mean 1,220 Ac-ft 883,400

Peak discharge (base, 5,000 cfs). Dec. 14 (7 a.m.) 5,080 cfs (5.45 ft); Feb. 27 (2,30 p.m.)

16,200 cfs (12.03 ft); Mar. 8 (8 p.m.) 10,300 cfs (9.59 ft); Apr. 22 (10 p.m.) 3,990 cfs (6.08 ft)j

May 14 (1 p.m.) 6,550 cfs (7.65 ft); May 21 (10:50 p.m.) 11,500 cfs (10.13 ft).

503667 O - 59 - 10
138 OWYHEE RIVER BASIN

Owyhee Reservoir at Owyhee Dam, near Nyssa, Oreg.

Location. Lat 43"38"30", long 117"14"40", in sec. 20, T. 22 S., R. 45 E., near left abutment on Owyhee dam, 21 miles southwest of Nyssa.

Drainage area. 11,160 sq mi, approximately. 

Records available . October 1932 to September 1957.

Gage. Staff gage read once daily. Datum of gage is at mean sea level (levels by Bureau 

of Reclamation).

Extremes. Maximum contents observed during year, 1,136,000 acre-ft May 22 (elevation, 

2,671.08 ft); minimum observed, 800,000 acre-ft Oct. 10 (elevation, 2,641.31 ft).

1932-57: Maximum contents observed, 1,140,000 acre-ft Apr. 15, 1952 (elevation, 

2,671.40 ft); minimum observed since full capacity was attained on May 7, 1936, 

462,700 acre-ft Oct. 10, 1955 (elevation, 2,599.44 ft).

Remarks. Reservoir is formed by concrete arch-gravity dam, completed in September 1932; 

storage began Oct. 16, 1932. Capacity. 1,122,000 acre-ft between elevations 2,367.5 

(bottom of sluice gates) and 2,670 ft (top of spillway gate), 715,000 acre-ft between 

elevations 2,590.2 (diversion tunnel) and 2,670 ft. Dead storage below elevation 

2,367.5 ft negligible. Figures given herein are of contents above elevation 2,367.5 ft. 

The reservoir will generally not be drawn below elevation 2,590.2 ft. Water is released 

through diversion tunnel to South Canal for irrigation of lands west of Snake River in 

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.

Cooperation. Record of elevations furnished by Bureau of Reclamation.

Date

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

Calendar year 1956 ..............................

Jan . 3 1 ...........................................

Pet) . 28 ...........................................

Aug. 31...........................................

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

Water year 1956-57. . ............................

Elevation 

(feet)

2,642.77 

2,642.30 

2,643.90 

2,647.30

-------

2,648.64 

2,661.60 

2,668.64 

2,670.00 

2,670.10 

2,667.07 

2,659.20 

2,650.58 

2,643.28

.

Contents 

(acre -feet)

814,300 

809,700 

825,500 

860,100

-

876,100 

1,019,000 

1,105,000 

1,122,000 

1,123,000 

1,085,000 

990,500 

894,500 

819,400

_

Change in contents 

(acre-feet)

-4,600 

+15,800 

+34,600

+310,200

+16,000 

+142,900 

+86,000 

+17,000 

+1,000 

-38,000 

-94,500 

-96,000 

-75,100

+5,100
OWYHEE RIVER BASIN 139

Owyhee River below Owyhee Dam, Oreg.

Location. Lat 43 0 39'10", long 117°15'00", in sec. 17, T. 22 S., R. 45 E., on left bank 

three-quarters of a mile downstream from Owyhee Dam and 20 miles southwest of Nyssa.

Drainage area.--11.160 sq mi, approximately. 

Records available. February 1929 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 2,343.67 ft above mean sea level (levels 

by Bureau of Reclamation).

Average discharge.--25 years (1932-57), 366 cfs (265,000 acre-ft per year).

Extremes.--Maximum discharge during year, 7,460 ofs May 21 (gage height, 9.33 ft); minlmum daily determined, 4 cfs Oct. 22 to Dec. 31.

1929-57: Maximum discharge, 22,900 cfs Apr. 15, 1952 (gage height, 15.7 ft); no 

flow fop part of Aug. 8,9, 1932, when temporary diversion tunnel at Owyhee Dam was 

closed.

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

About 450,000 acre-ft diverted annually from Owyhee Reservoir for irrigation of lands 

below station and outside the basin. Many smaller diversions for irrigation above 

station. Plow regulated by Owyhee Reservoir since October 1932 (see preceding page), 

by Wild Horse Reservoir since March 1938 (see p. 132 ), and by many smaller reservoirs.

Cooperation. Water-stage recorder inspected by employees of Bureau of Reclamation. 

Revisions (water years). WSP 983: 1941-42. WSP 1397: 1930, 1933, 1946.

Rating tables, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

-O.S

-.6

-.4

-.2 

0.0

Oct. 1 to Mar. 1O

3 0.5

6 1.0

11 1.5

18 2.0

29 3.0

Mar. 11 to Sept. 3O

70

134

220

350

720

0.0 

.5 

1.0 

1.5 

2.0

34

74

136

230

360

3.0 

4.0 

6.0 

8.0 

9.4

720

1,250

2,880

5,350

7,580

Note. Same as following 

table~al above " 3.0 " ft. "

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

57 

5?

40

40

40

40

41

41

41

35

5

5

5

5

5

5

5

*5

5

5

5

4

1

4

*4

4

4

4

4

4

4

522

16.8

1,O4O

Nov.

> 4

120

4

238

Dec.

> 4

124

4

246

Jan.

> 5

155

5

3O7

Feb.

> 6

-

168

6

333

Mar.

6 6"

6

485

S20

788

1,300

3,560

5,500

5,660

5,050

4,550

4,390

2,840

1,58O

1,290

1,38O

1,440

1,530

1,610

1,690

1,780

1,800

626

34

34

702

2,470

2,770

2 1 620

2,720

61,037

1,969

121,100

Apr.

2,82O 

2,810

2.850

2,770

2,430

1,8OO

2,49O

*2,580

2,680

2,700

2,690

 2,700

2,710

2,760

1,800

1,480

1,720

1,670

1,500

772

366

366

648

1,370

2,250

3,440

2,470

2,330

2,180

1,740

61,872

2,062

122,700

Hay

1,350 

864

702 35o"

995

1,080

1,130

1,420

1,740

1,760

1,800

3,630

5,440

5,540

5,660

5,280

3,970

3,050

3,190

3,520

6,200

7.260

6,720

6,180

5,350

3,310

2,350

1,960

1,900

1,940

1,960

98,151

3,166

194,700

June

1,840 

1,740

880

536

500

40O

375

363

339

315

*295

210

14S

139 146"

151

160

176

178

178

178

178

178

179

193

205

207

207

212

214

11,020

367

21,860

July

201

191

195

199

199

201

201

201

201

201

203

203

2O3

205 25B"

191

191

174

158

158

158

165

168

170

154

145 146"

146

148

148

160

5,589

180

11,090

Aug.

170 

183

T§9" 199

199

185

*176

183

181

165

161

161

161

163

165

168

176

189

193

193

181

178

*176

176

176

165

Teo" 160

160

160

160

5,422

175

10,750

Sept.

m140

140

140

140

140

139

139

139

139

133

129

123

118

118

117

117

109

104

104

104

103

97

89

89

89

84

81 'ST

o±

3,551

118

7,040

Calendar year 1956 : Max 193 Mln - Mean 73. 0 Ae-ft 52,970

Water year 1956-57 : Max 7,260 Mln - Mean 679 Ac-ft 491,400

* Discharge measurement made on this day.

Note.--No gage-height record Oct. 11-17, 19-24, Oct. 26 to Mar. 3, June 5, 6j discharge Interpolated.
140 BOISE RIVER BASIN

Boise River near Twin Springs, Idaho

Location. Lat 43°40', long 115"44' , in sec. 27, T. 4 N., R. 6 E., on right bank a quarter 

of a mile upstream from Birch Creek, If miles upstream from maximum flow line of Arrowrock Reservoir, 4 miles downstream from Twin Springs, and 13 miles upstream from 

Arrowrock.

Drainage area. 830 sq mi, approximately. 

Records available. March 1911 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 3,251.08 ft above mean sea level, unadjusted. 

Prior to Apr. 4, 1915, staff gage at same site and datum.

Average discharge. 46 years, 1,180 cfs (854,300 acre-ft per year).

Extremes. Maximum discharge during year, 8,730 cfs May 19 (gage height, 7.48 ft); minimum, 

257 cfs Jan. 18 (gage height, 1.82 ft), but may have been less during periods of ice 

effect or no gage-height record.

1911-57: Maximum discharge, 11.200 cfs May 24, 1956 (gage height, 8.76 ft); maximum 

gage height, 9.59 ft Feb. 3, 1956 (ice jam); minimum discharge, 109 cfs Dec. 10, 1944; 

minimum gage height, 1.56 ft Dec. 15, 16, 1935.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair.

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used May 7-21, May 30 to June 13)

1.8 

2.1 

2.5 

3.0 

3.5

250

376

625

1,050

1,610

4.0 

5.0 

6.0 

7.0 

8.0

2,260

3,770

5,440

7,320

9,430

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

*392 

392

392

387

398

392

381

387

425

436

569

555

478

448

425

425

414

414

460

419

414

408

419

442

430

510

618 5TO430

510

562

13,842

447

0.539

0.62

27,460

Nov.

478 

454

425

442

460

472

*484

466

466

478

503

503

510

472

371

454

Bio" 536

376

320

390

420

430

420

390

400

400

400

400

410

13,240

441

0.531

0.59

26,260

Dec.

390 

410

484

466

448

430

408

338

333

f5S

632

822

883

*919

Ttt

640

569

542

536

442

448

414

470

542

440

350

350

400

400

410

440

15,576

502

0.605

0.70

30,890

Jan.

440 

470

415

340

340

350

380

410

430

390

380

420

430

*430

410

360

310

285

310

450

430

410

400

380

350

300

~Z55 280

300

330

360

11,575

373

0.449

0.52

22,960

Feb.

430 

450

440

440

430

410

410

410

400

390

380

380

*376

33?

387

425

466

478

503

529

516

510

583

901

1,350

*1,550

1,770

1,470

-

17,176

613

0.739

0.77

34,070

Mar.

1,250

1,100

1,000

883

831

756

748

737

974

1,060

984

1,010

892

797

814

806

814

797

856

946

1,010

955

865

840

856

831

822

865

928

1,100

1,240

28,427

917

1.10

1.27

56,380

Apr.

1,220 

*1.140

1,180

1,200

1,410

2,270

1,950

1,770

1,800

2,030

2,220

2,340

2,330

2,500

2,780

2,620

2,500

2,340

2,260

2,390

2,440

2,560

2,980

3,040

2,620

2,260

2,090

2,330

3,140

3,850

67,560

2,252

2.71

3.03

134,000

May

*4,390 

5,110

5,420

4,780

4,390

4,970

6,070

6,310

6,120

6,290

5,930

5,980

6,290

6,410

5,980

6,200

6,260

6,880

8,410

7,260

5,800

*4,870

4,280

3,900

5,870

4,070

4,530

4,970

5,480

5,960

6,270

173,390

5,593

6.74

7.77

343,900

June

6,520 

6,880

*7,540

7,870

7,890

7,680

6,440

5,890

5,140

4,390

4,280

4,150

3,950

3,430

3,040

2,690

2,450

2,460

2,690

3,020

2,930

2,690

2,570

2,720

2,820

2,600

2,600

2,900

2,740

2,690

125,640

4,188

5.05

5.63

249,200

July

2,570 

*2,390

2,130

1,960

1,780

1,730

1,680

1,570

1,490

1,420

1,340

1,280

1,190

1,140

1,070

1,010

964

928

883

856

840

806

772

748

716

700

678

662

655

632

611

37,201

1,200

1.45

1.67

73,790

Aug.

5~§0~ 604 

569

562

542

536

529

516

510

496

484

478

466

454

448

442

436

425

419

414

408

408

*403

408

592

398

398

398

403

419

436

14,391

464

0.559

0.64

28,540

Sept.

45B" 425 

392

381

376

371

362

357

352

357

362

362

357

352

347

347

342

357

398

387

376

371

362

357

*352

347

342

33~8~ 333

338

10,908

364

0.439

0.49

21,640

Calendar year 1956 : Max 10,800 Min 320 Mean 1,779 Cfsm 2.14 In. 29.17 Ac-ft 1,291,000

Water year 1956-5?: Max 8,410 Min 280 Mean 1,449 Cfsm 1.75 In. 23.70 Ac-ft 1,049,000

Peak discharge (base, 3,700 cfs).--May 3 (4 a.m.) 5,850 cfs (6.14 ft); May 19 (7 a.m.) 8,730 cf, 

(7.48 ft); June 5 (4 to 5:50 a.m.) 8,590 cfs (7.32 ft).________________________________

* Discharge measurement made on this day.

Note .--Stage-discharge relation affected by ice Nov. 20 to Dec. 2, Dec. 23, Dec. 25 to about 

Feb. 7. No gage-height record Jan. 10-12, Jan. 24 to Feb. 12, Apr. 15, 16, 29, 30; discharge 

estimated on basis of weather records and records for nearby streams.
BOISE RIVER BASIN 141

South Fork Boise River near Featherville, Idaho

Location. Lat 43°29'40", long 115"18"20", in lot 6, NE£ sec. 19, T. 2 N., R. 10 E., on 

right bank 2^ miles upstream from Deer Creek and 8 miles southwest of Featherville.

Drainage area. 635 sq mi.

Records available. April 1945 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 4,220 ft (from topographic map of 

Bureau of Reclamation).

Average discharge.--12 years, 828 cfs (599,400 acre-ft per year).

Extremes. Maximum discharge during year, 5,880 cfs June 6; maximum gage height, 6.93 ft 

May 19; minimum discharge, 148 cfs Dec. 9 (gage height, 1.10 ft), but may have been less 

during period of no gage-height record.

1945-57: Maximum discharge, 7,580 cfs May 24, 1956 (gage height, 8.62 ft); minimum, 

30 cfs Feb. 10, 1949 (gage height, 0.60 ft), result of snowslide upstream.

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

No regulation. Small ranch diversions above station.

Rating table, water year 1956-57 (gage height, in feet, and 

discharge, in cubic feet per second) 

(Shifting-control method used June 4-6)

1.1 

1.3 

1.6 

2.0 

2.5

148

202

298

457

730

3.0 

4.0 

5.0 

7.0

1,100

2,060

3,200

5,880

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cf sin

In.

Ac-ft

Oct.

229 

223

220" 220

226

Z26

223

226

264

274

375

37T

305

278

264

258

251

*251

264

254

251

248

351

258

254

288

309

261

235

f_aa

298

8,143

263

0.414

0.48

16 , 150

Nov.

261 

254

242

248

284

302

295

278

274

274

278

278

281

254

196

251

305

167

*195

190

229

251

248

238

220

214

211

211

223

235

7,487

250

0.394

0.44

14,850

Dec.

229 

229

258

264

261

254

223

174

235" 171

316

375

~563 395

298

281

261

245

258

199

194

199

202

232

226

208

208

*226

238

242

242

7,706

249

0.392

0.45

15,280

Jan.

235 

238

217

214

205

208

a220

a230

a240

a230

a220

a250

254

25T

248

223

196

199

200

a250

a240

a230

a220

a210

a200

alSO

a!70

aT§0

a!90

a200

a210

6,758

218

0.343

0.40

13,400

Feb.

a240 

a240

a235

232

a225

a230

a230

226

226

220

*214

217

217

229

229

220

220

226

232

242

251

251

274

328

399

423

432

1153"

-

7,311

261

0.411

0.43

14,500

Mar.

371 

355

355

343

339

313

316

331

359

363

343

367

335

289

S24

328

328

326

331

367

407

387

375

379

391

*383

395

411

428

466

542

11,347

366

0.576

0.66

22,510

Apr.

517 

498

532

569

664

870

758

737

793

940

1,030

1,020

1,000

1,070

1,160

1,140

1,130

1,080

1,070

1,120

1,160

*1,180

1,390

1,520

1,330

1,170

1,120

1,280

1,710

2*280

31,838

1,061

1.67

1.86

63,150

May

2,680 

2,920

3,000

2,730

2.410

2,640

*3,370

3,520

3,530

3,660

3,690

3,650

3,760

3,910

3,800

3,690

3,690

4,170

5,460

4,720

3,900

3,330

*2 , 900

2,630

2,540

2,680

3,040

3,400

3,760

3,990

4,090

107,260

3,460

5.45

6.28

212,700

June

4,430 

4,790

5,280

5,530

*5,600

5,600

4,890

4,360

3,870

3,360

3,160

3,060

2,910

2,590

2,280

2,040

1,830

1,800

1,910

2,000

1,980

1,860

1,790

1,850

1,850

1,750

1,870

1,920

1,820

1^740

89,720

2,991

4.71

5.25

178,000

July

1,650 

1,510

1,370

1,240

1,120

1,080

1,030

964

*919

884

849

814

800

737

688

652

616

575

547

537

517

498

475

453

440

428

415

403

399

391

575

23,376

754

1.19

1.37

46,370

Aug.

355 343"

331

328

320

313

305

302

295

291

278

267

267

264

258

258

251

245

238

235

*232

232

232

229

226

223 226"

229

235

245

267

8,320

268

0.422

0,49

16,500

Sept.

261 

248

238

232

226

220

214

205

202

205

205

208

208

205

205

199

196.

199

214

220

207

214

211

205

205

208

205

202

214

*217

6,398

213

0.335

0.37

12,690

Calendar year 1956: Max 7,310 Win 171 Mean 1,124 Cfsm 1.77 In. 24.09 Ac-ft 815,900

Water year 1956-57: Max 5,600 Min 170 Mean 865 Cfsm 1.36 in. 18.48 Ac-ft 626,100

Peak discharge (base, 2,000 cfs).--May 19 (10 a.m.) 5,710 cfs (6.93 ft); June 6 (5 a.m.) 5,880 ofs 

(6.90 ft).

* Discharge measurement made on this day.

a Mo gage-height record; discharge estimated on basis of weather records, inflow-outflow study of 

Anderson Ranch Reservoir, and records for Boise River near Twin Springs and other nearby streams.
142 BOISE RIVER BASIN

Little Camas Canal at heading, near Bennett, Idaho

Location.--Lat 43°21'30", long 115°23'00", in sec. 9, 0?. 1 S., R. 9 E., on right bank 

400 ft downstream from Little Camas Reservoir, 4 miles northeast of Bennett, and 

22 miles northeast of Mountain Home.

Records available.--June to November 1917, October 1923 to September 1957.

Gage.--Staff gage read once daily. Datum of gage is 4,926 ft above mean sea level (datum 

of Mountain Home Irrigation District). June 1 to Nov. 29, 1917, water-stage recorder and 

Apr. 16 to May 11, 1924, staff gage, at datum 6.00 ft lower. May 12, 1924, to 

Sept. 30, 1929, water-stage recorder at present datum.

Extremes. 1917. 1924-57: Maximum daily discharge, 77 cfs Apr. 27-30, May 1, 3, 9, 1924; 

no-flow during nonirrigation seasons.

Remarks.--Records good. Canal diverts from Little Camas Reservoir (South Fork Boise River 

drainage) in sec. 9, T. 1 S., 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 diversion above station. Flow regulated by Little Camas Reservoir.

Cooperation.--Gage readings furnished by Mountain Home Irrigation District.

Discharge, In cubic Feet per second, 1957

Day

I

2

3

4

5

6

7

8

9

10

11

12

13

14

15

May

6"0

0

0

0

11

*29

46

56

63

5?

aSO

50

a50

So

June

6"0

0

0

*22

a38

38

a38

37

a37

a37

40

45

45

45

July

51

5T

51

51

50

51

51

51

51

*51

51

51

51

51

51

Aug.

49

4?

49

49

49

49

48

48

48

48

48

48

48

48

48

Sept.

47

a4T

47

47

46

46

46

46

46

39

a32

a32

a32

a32

13

Day

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

May

a50

50

a50

a50

50

21

0

O

0

0

0

0

0

0

O

0

735

23.7

1,460

Calendar year 1956: Max 61 Mln O Mean 17.8 AcJune

45

45

44

44

44

44

44

44

44

44

44

44

43

43

48

-

36.2

2,150

July

51

51

51

50

49

48

4?

49

49

49

49

49

49

49

49

49

1,554

50.1

3,080

Aug.

48

48

48

49

49

*48

49

48

48

48

48

48

48

48

48

47

48.3

2,970

Sept.

O

0

0

0

O

0

o

0

0

0

0

0

0

0

0

-

19.9

1,190

-t 12,910

Water year 1956-57: Max 63 Mln O Mean 15.0 Ac-ft 10,850

* Discharge measurement or observation of no flow made on this day. 

a No gage-height record,- discharge Interpolated between gate changes. 

Note. No flow Oct. 1 to Apr. 3O.

Anderson Ranch Reservoir total surface inflow determination

During 1956 and 1957, three field runs were made to determine total surface flow 

entering Anderson Ranch Reservoir, the proportion of unmeasured surface flow to flow 

recorded at the regular tributary stations, and to furnish information for inflow-outflow 

studies on the reservoir.

Discharges in the table are results of current-meter measurements or estimates except 

those for regular gaging stations, which are mean daily flows. Mean daily flow for Lime 

Creek and Fall Creek for May 7, 1957, was estimated on basis of current-meter measurements 

and records for South Fork Boise River near Featherville.

Point of Determination

Gaging station South Pork Boise River

near Peathervllle.

Tributaries between gaging stations

South Fork Boise River near Featherville and Lime Creek near Bennett.

Gaging station Lime Creek near Bennett.

Tributaries between Lime Creek gaging

station and Anderson Ranch Dam.

Tributaries between gaging stations

South Pork Boise River near Featherville and Pall Creek near Anderson

Ranch Dam.

Gaging station Fall Creek near Anderson

Ranch Darn.

Tributaries between Pall Creek gaging

station and Anderson Ranch Dam.

Discharge ,

June 15, 1956

3,340

20.8

142

12.1

4.81

202

19.0

3,684

56.71

In cubic feet p

Sept. 7, 1956

235

3.51

23

2.31

.76

16

2.41

274

8.99

er second

May 7, 1957

3,370

67.3

411

14.5

8.80

434

48.6

4,215

139.2
BOISE RIVER BASIN 143

Anderson Ranch Reservoir at Anderson Ranch Dam, Idaho

Location.--Lat 43°21'30", long 115"27" 10", in SE£ sec. 1, T. 1 S,., R. 8 E., on inlet 

structure okfiu^uuic of ui outlet uuuxeu works HUIK.CS ui of ueuu dam un on ouutu South JUIK Pork Dulse Boise nlVcI River, ij miles downst

Camas Creek and 3 miles northwest of Bennett (Dixie Store]

;ream from

Drainage area. 980 sq mi, approximately.

Records available. December 1945 to September 1957.

Sage. Staff gage or supplementary pressure gage in powerhouse read once daily. Datum of 

gage is at mean sea level (surveys by Bureau of Reclamation).

Extremes. Maximum contents observed during year, 465,300 acre-ft June 25 (elevation, 

4,196.24 ft); minimum observed, 216,900 acre-ft Feb. 16 (elevation, 4.130.40 ft).

1945-57: Maximum contents observed, 472,800 acre-ft June 1, 1956 (elevation, 

4,197.81 ft); no usable contents prior to Jan. 27, 1946; minimum since full capacity 

was attained June 21, 1951, 145,000 acre-ft Mar. 23, 1956 (elevation, 4,103.22 ft).

Remarks. Reservoir is formed by earth-fill dam. Storage began Dec. 15, 1945. Usable 

contents, 464,200 acre-ft between elevations 3,992 and 4,196 ft (top of spillway 

gates). Elevation of spillway crest, 4,174 ft, and of top of dam, 4,206 ft. Dead 

storage below 3,992 ft is 28,980 acre-ft. Figures given herein represent usable contents. Water is used for irrigation in Boise Valley and for power production.

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

Capacity table (elevation, In feet, and usable contents, 

in acre-feet)

4,130.0

4,135.0

4,140.0

4,145.0

4,150.0

4,155.0

4,160.0

215,700

230,500

246,100

262,300

279,100

296,500

314,400

4,165.0

4,170.0

4,175.0

4,180.0

4,185.0

4,190.0

4,198.0

332,800

352,000

371,800

392,400

413,900

436,300

473,700

Usable contents, in acre-feet, at 8 a.m., water year October 1956 to September 1957

Day

1

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

ill

Oct.

402,500

402, 200 

402,400

402,500

402,600

402,700 

403,000 

403,200 

403,600 

404,300

404,800 

405,800 

406,400 

407,300 

407,400

407,800

408,100 

408,100 

408,500 

408,900

409,200 

409,700 

410,000 

410,600 

410,800

411,700 

412,000 

412,100 

412,600 

413,700 

413,800

84.97 

+11,600

Nov.

413,900

414,300

414,400

414,400

414,200 

414,300 

413,900 

412,900 

411,600

411,200 

411,600 

410,100 

408,500 

406,800

404,800

400,900 

399', 200 

396,900

394,400 

392,900 

392,700 

392,400 

590,800

390,300 

389,000 

386,300 

384,700 

585,000

77.73 

-30,800

Dec.

380,000

375^000

372,700

370,800

368,400 

366,000 

363,400 

360,900 

357,800

357,100 

359,900 

359,500 

358,200 

356,100

354,700

352,600 

350,100 

348,700 

346,000

343,700 

341,500 

339,500 

337,000 

335,200

332,500 

330,600 

326,900 

325,000 

323,200 

320,900

61.80 

-62,100

Jan.

318,500

314,400

312,600

309,800

307,800 

305,300 

302,100 

300,000 

297,800

295,300 

293,500 

290,700 

288,700 

287,100

284,000

281,700 

279,100 

277,400 

274,700

272,600 

270,900 

267,900 

265,600 

263,300

261,000 

258,700 

256,400 

253,800 

251,700 

249,700

41.15

-71,200

Feb.

246,100

241,300

240,200

238, 100

235,600 

233,600 

231,400 

229,100 

226,800

224,700 

222,400 

220,400 

218,900 

217,400

216,900

217,300 

218,000 

217,600 

217,400

217,000 

217,000 

217,100 

218,000 

219,700

221,200 

223,300 

225,300

33.26 

-24,400

Mar.

226,800

CCO, J.UU

229,700

230,600

231,700

232,300 

233,300 

234,200 

235,400 

236,400

237,500 

238,700 

239,600 

240,100 

240,300

240,200

240,800 

241,800 

241,900 

242,100

242,600 

242,900 

243,000 

243,900 

244,600

244,100 

243,800 

244,200 

244,300 

245,000 

248,000

40.59 

+22,700

Apr.

249,100

248,800

249,200

249,600

251,700 

253,700 

255,300 

255,900 

256,700

258,200 

260,400 

262,300 

265,300 

268,700

271,100

273,000 

275,200 

276,700 

278,200

280,000 

283,300 

285,000 

287,900 

289,700

291,500 

292,900 

295,500 

298,800 

300,800

56.24 

+52,800

May

304,000

316,000

321,700

327,200

333,200 

338,200 

344,100 

350,000 

355,900

362,300 

368,700 

376,500 

384,500 

392,200

398,600

404,800 

410,400 

419,000 

427,200

436,700 

437,200 

436,300 

434,300 

434,200

433,600 

434,100 

435,400 

436,600 

437,800 

438,500

90.48 

f!37,700

June

440,100

444, 100

447,700

451,500

455,600 

459,200 

460,400 

459,800 

459,200

459,500 

460,900 

462,200 

463,100 

472,800

464,000

464,600 

464,200 

463,700 

464,000

464,200 

464,500 

464,300 

464,100 

465,300

464,400 

464,200 

463 , 600 

463,800 

464,100

95.99 

+25,600

July

464,000

463,700

463,700

463,300

463,000 

462 , 400 

461,800 

461,000 

460,000

458 , 800 

457 , 900 

457,100 

455,900 

455 , 600

454,300

453,200 

451,600 

450,100 

448,600

447 , 100 

445,400 

443,500 

441,700 

439 , 900

438,000 

436,100 

434,000 

432,000 

429 , 900 

428,000

88.18 

-36,100

Aug.

425,900

421,700

419,600

417,400

415,000 

412,900 

410,700 

408,500 

406,400

404,100 

401,700 

399,200 

396,900 

394,500

392,400

390,000 

387,800 

385,400 

382,800

380,400 

378,100 

375,500 

373,200 

370,600

368,700 

366,000 

362,800 

360,800 

358,200 

356,500

71.15 

-71,500

Sept.

353,600

354,700

355,100

355,500

356,000 

356,400 

356,700 

357,100 

357,600

358,000 

358,300 

358,800 

359,200 

359,600

359,800

360,400 

360,900 

361,100 

361,600

361,900 

362,400 

362,900 

363,300 

363,700

364,300 

364,800 

365,000 

365,400 

366.000

73.54 

+9,500

Calendar year 1956.................... t +71,400

Water year 1956-57.................... * -36,200

t Elevation, In feet, at end of month. 

* Change in contents, In acre-feet.
144 BOISE RIVER BASIN

South Fork Boise River at Anderson Ranch Dam, Idaho

Location. Lat 43°20", long 115°29', in SW^r sec. 11, T. 1 S., R. 8 E., on right bank 

BOO ft upstream from Dixie Creek, If miles downstream from Anderson Ranch Reservoir, 

and 2j miles northwest of Bennett (Dixie store).

Drainage area.--982 sq mi.

Records available. April 1943 to September 1957 (includes flow of Dixie Creek prior to 

October 1946 and excludes Dixie Creek thereafter).

Gage. Water-stage recorder. Altitude of gage is 3,850 ft (from topographic map of 

Bureau of Reclamation).

Average discharge.--14 years, 998 cfs (772,500 acre-ft per year).

Extremes.--Maximum discharge during year, 5,840 cfs June 5 (gage height, 8.12 ft); mlni-

 mum, 3.8 cfs Mar. 2, 3 (gage height, 1.22 ft).

1943-57: Maximum discharge, 9,850 cfs May 25. 1956 (gage height, 10.56 ft); minimum, 0.3 cfs Feb. 16, 1950 (gage height, 0.99 ft), but may have been less during period 

of ice effect.

Remarks.--Records excellent. Flow of Little Camas Creek stored in Little Camas Reservoir 

Tno~spill most years) and diverted through Little Camas Canal (see p. 142) for irrigation of about 5,000 acres of land in vicinity of Mountain Home. Flow regulated by 

Anderson Ranch Reservoir (see preceding page) beginning Dec. 15, 1945.

Cooperation. Water-stage recorder inspected by Bureau of Reclamation.

Rating table water year 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

2.3 

2.6 

3.0 

3.5 

4.0

168

276

450

730

1,050

1,890

2,930

4,190

5,660

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

460 2-4-5

212

140

160

121

118

200

126

126

129

124

124

126

129

171

*313 

132

132

129

129

132 

132

134

132

179

132

132

164

151

132

4,964

160

9,850

Nov.

137 

5^8

476

188

562

315

464

1,040

1,010

687

220

1,010

1,150

1,250

1,230

1,160

1,470 

1,180

*1,350

1,490

1,550

221 

528

1,080

270

1,300

1,230

1,530

1,460

1,450

27,556

919

54,660

Dec.

1,530 

1,540

1,530

1,540

1,420

1,540

1,550

1,550

1,550

1,350

129

4TT

1,340

1,430

1,480

1,340

1,570 

1 , 550

1,530

1,520

1,530

1,530 

1,350

1,530

1,530

1,530

1,530

*1,530

1,530

1,340

1,540

43,876

1,415

87,030

Jan.

1,550 

1,530

1,530

1,550

1,550

1,550

1,530

1,520

1,520

1,520

1,520

1,520

1,520

1,520

1,520

1,520

1,510 

1,510

1.480

1,520

1,520

1,520 

1,520

1,520

1,520

1,520

1,520

1,510

1,510

1,510

1,500

47,080

1,519

93,580

Feb.

1,500 

1,490

1,490

1,490

1,490

1,480

1,480

1,480

1,480

1,480

*1,480

1,400

1,420

992

1,000

25

15 

500

505

508

455

437 

15

9.5

6.6

8.5

9.0

8.0

-

23,651.6

845

46,910

Calendar year 1956: Max 9,770 Mln 40

Mar.

7.0 

5.0

7.O

217

56

22

22

22

179

44

149

59

204

437

478

306

17 

421

445

*461

464

488 

255

160

918

759

530

398

550

355

144

8,559.0

276

16,980

Apr.

892 

984

846

919

944

656

628

909

1,450

1,050

644

646

346

157

6l5

806

610 

880

952

958

150

*1,040 

276

1,280

1,080

1,050

342

231

1,350

1,520

24,129

804

47,860

May

1,570 

585

866

645

224

1,040

966

1,560

1,560

1,540

1,540

1,080

944

976

1,260

1,460

1,690 

1,710

1,310

2,540

3,780

4,800 

4,790

*3,710

3,390

3,450

3,210

5,510

4,160

4,480

4,550

68,476

2,209

155,800

June

4,130 

4,550

4,480

4,480

*4,470

4,480

4,670

5,090

4,760

3,740

2,970

2,790

2,790

2,790

2,250

2,000

2,170 

2,280

2,170

2,110

2,110

2,110 

2,090

1,660

1,950

2,520

2,290

2,120

2,050

2,050

89,920

2,997

178,400

July

2,050 

1,700

1,530

1,520

1,520

1,520

1,510

1,500

1,500

*1,480

1,520

1,390

1,390

1,410

1,100

1,350

1,420 

1,420

1,460

1,500

1,510

1,510 

1,520

1,520

1,520

1,510

1,500

1,500

1,510

1,510

1,510

46,410

1,497

92,050

Aug.

1,510 

1,500

1,500

1,500

1,500

1,500

1,500

1,420

1,510

1,510

1,500

1,510

1,520

1,520

1,440

1,440

1,520 

1,440

1,520

1,520

1,520

*1,550 

1,530

1,450

1,530

1,550

1,550

1,450

1,550

1,220

1,540

46,240

1,492

91,720

Sept.

550 

TTJ

112

52

5T

52

52

32

32

52

52

52

52

52

32

32

52 

53

33

33

33

33 

33

32

32

32

32

32

32

*32

1,625

54.2

3,220

Mean 1,410 Ac-ft 1,024,000

Water year 1956-57: Max 5,090 Min 5.0 Mean 1,185 Ac-ft "857,900

Discharge measurement made on this day.
BOISE RIVER BASIN 145

Arrowrock Reservoir at Arrowrock, Idaho

Location. Lat 43°36', long 115°55', in E| sec. 13, T. 3 N., R. 4 E., at dam on Boise 

River at Arrowrock, 14 miles east of Boise.

Drainage area.--2,210 sq mi, approximately. 

Records available.--October 1917 to September 1957.

Gage.--Staff graduated on face of dam read once daily. Datum of gage is at mean sea level 

("surveys of Bureau of Reclamation).

Extremes. Maximum contents observed during year, 292,800 acre-ft Feb. 27 (elevation, 

3,218.0 ft); minimum observed, 10,260 acre-ft Sept. 3 (elevation, 3,046.0 ft).

1917-57: Maximum contents observed, 301,200 acre-ft May 29, 1948 (elevation, 

3,219.1 ft); no usable contents during period in each of several years when sluice 

gates were open and natural flow was passing through reservoir.

Remarks.--Reservoir is formed by gravity-section concrete-arch dam completed in 1915 and 

raised 5 ft in 1937; storage began in 1915. Capacity, 286,600 acre-ft between elevations 2,974 (9.5 ft above sluice gate sill) and 3,216 ft (highest position of movable 

crest of spillway). Silt deposition at dam has raised the lower storage level and 

decreased the capacity of the reservoir. Prior to Oct. 1, 1952, contents in publications of the Geological Survey applied from original capacity table and no silt corrections were made. Beginning Oct. 1, 1952, contents applied from revised table, which 

is the original table reduced by amounts varying from 347 acre-ft at elevation 2,974 ft 

to 5,000 acre-ft at elevation 3,085 ft and above. Water is used for irrigation in 

Boise Valley.

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

Capacity table (elevation, In feet, and usable contents, in acre-feet)

3,040.0

3,050.0

3,060.0

3,080.0

3,100.0

3,120.0

8,270

11,920

16,770

30,000

49,000

75,000

3,140.0

3,160.0

3,180.0

3,200.0

3,218.0

107,500

146,000

189,500

240,000

292,800

Usable contents, in acre-feet, at about 8 a. m., water year October 1956 to September 1957

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

i!|

Oct.

12,360 

14,320 

16,240 

17,640 

18,990

20,480 

22,000 

23,130 

24,440 

26,150

27,540 

29,380 

30,800 

32,320 

33,520

34,540 

35,620 

37,600 

39,000 

40,400

41,500 

42,700 

43,940 

45,260 

46 , 580

48,010 

49,720 

51,880 

53,320 

54,760 

56,430

3,106.1 

+46,560

Nov.

58,380

59,810 

61,760 

63,840 

65,400

67,350 

69,400 

71,500 

74,580 

78,000

80,550 

82,350 

85,700 

89,060 

92,370

95,940 

99,680 

103,900 

107,500 

111,100

115,400 

119,400 

121,200 

123,200 

126,000

128,000 

131,600 

134,800 

138,400 

142,400

3,158.2 

-1-85,970

Dec.

146,000

150,200 

154,200 

158,400 

162,400

165,700 

169,400 

173,400 

178,900 

180,800

184,400 

187,200 

190,500 

195,500 

200,500

205,000 

209,200 

214,000 

217,900 

222,100

226,000 

229,900 

233,800 

237,100 

237,900

237,900 

237,900 

237,900 

237,900 

237,900 

237,900

3,199.2 

+95,500

Jan.

238,200 

238,200 

238,400 

238,400 

238,400

238,400 

238,400 

238,400 

238,700 

238,000

239,000 

239,000 

239,200 

239,700

239,700

239,700 

239,700 

238,700 

237,900 

237,100

236,900 

236,400 

236,400 

235,800 

235,600

235,300 

234,500 

234,000 

233,200 

233,000 

232,200

3,197.0

-5,700

Feb.

235,800

239,500 

243,400 

247,300 

251,200

254,900 

258,600 

262,100 

265,900 

269,100

273,300 

276,900 

278,100 

279,600 

280,500

280,200 

279,000 

276,900 

276,000 

275,100

275,400 

277,500 

279,300 

282,600 

286,600

290,000 

292,800

290,300

3,217.2 

+58,100

Mar.

288,500

287,500 

286,600 

285,700 

285,000

283,800 

282,600 

281,400 

281,100 

281,700

281,400 

281,100 

280,800 

279,900 

279,300

278,700 

278,400 

277,500 

276,900 

276,600

276,900 

276,900 

276,900 

276,000 

275,400

276,000 

276,000 

275,700 

275,400 

275,700 

276,300

3,212.6 

-14,000

Apr.

276,600 

277,800 

279,300 

280,200 

281,700

282,900 

283,800 

284,400

282,900

282,000 

281,700 

280,800 

279,600 

278,100

277,800 

277,800 

276,900 

276,300 

275,700

275,700 

273,900 

274,200 

270,300 

267,600

262,100 

255,700 

248,400 

241,400 

237,900

3,199.2 

-38,400

May

235,600 

233,800 

230,600 

227,300 

222,800

216,900 

215,000 

214,500

215,000 

215,600

216,100 

216,100 

215,600 

215,600 

215,300

215,600 

216,600 

218,200 

222,800 

227,500

231,700 

236,100 

240,000 

242,800 

242,200

241,400 

241,100 

241,400 

243,600 

247,600 

252,600

3,204.5 

+14,700

June

257,200

262,700 

269,100 

276,600 

284,100

290,000 

291,200

290,900 

290,600 

288,800

286,300 

282,900 

281,100 

280,500 

281,100

279,300 

276,900 

274,500 

274,200 

274,200

275,700 

276,900 

277,800 

278,700 

279,000

279,900 

280,500 

281,400 

282,300 

282,300

3,214.6 

+29,700

July

281,700

281,400 

279,900 

277,500 

275,100

271,800 

268,500 

264,700 

261,500 

258,100

254,300 

250,600 

246,700 

242,200 

237,400

232,700 

228,000 

223,100 

218,200 

213,500

208,800 

204,200 

199,800 

195,300 

190,700

186,000 

181,400 

176,900 

172,500 

168,500 

164,500

3,168.8 

-117, 800

Aug.

160,300

155,400 

150,600 

145,600 

141,600

137,000 

132,000 

127,000 

121,800 

116,900

112,200 

107,300 

102,400 

97,300 

92,200

87,620 

82,820 

78 , 300 

73,600 

68,700

63,840 

58,640 

52,840 

49,120 

45,700

42,800 

39,900 

36,250 

31,920 

27,690 

22,730

3,070.0 

-141,770

Sept.

17,970 

11,280 

10,260

13! 040

14,220 

15,460 

16,500 

17,640 

18,700

19,750 

20,920 

21,940 

22,860 

24,090

25,140 

26,080 

26,950 

27,920 

28,990

30,000 

31,120 

31,920 

32,880 

33,760

34,630 

35,620 

36,430 

37,240 

38,140

3,089.6 

+15,410

Calendar year 1956.................... * -24,200

Water year 1956-57.................... * +28,270

* Elevation, in feet, at end of month, 

t Change in contents, in acre-feet.
146 BOISE RIVER BASIN

Bannock Creek near Idaho City, Idaho

Location. Lat 43°48'30", long 115°46'30", In SE^SW^ sec. 32, T. 6 N. ,R. 6 E., on right 

bank three-quarters of a mile upstream from West Pork (revised), 2£ miles upstream 

from mouth, and 3 miles southeast of Idaho City.

Drainage area. 4.5 sq mi, approximately.

Records available.--January 1939 to November 1941, December 1950 to September 1957.

Gage. Water-stage recorder and broad-crested wooden control with V-notch for low stages. 

"Jfltitude of gage is 4,090 ft (from topographic map).

Average discharge. 8 years (1939-41, 1951-57), 2.27 cfs (1,643 acre-ft per year).

Extremes.--Maximum discharge during year. 24 cfs May 12 (gage height, 1.65 ft); minimum, 

0.2 cfs Mar. 14 (gage height, 0.15 ft).

1939-41, 1950-57: Maximum discharge, 33 cfs Apr. 26, 1952 (gage height, 1.95 ft); 

maximum gage height, 2.03 ft Feb. 6, 1952 (backwater from ice); minimum discharge, 

0.07 cfs Aug. 23, 1940; minimum gage height, 0.06 ft Nov. 29, 1952 (result of siphon 

action at weir).

Remarks.--Records excellent except those for periods of ice effect or no gage-height 

 record and those below 1.0 cfs, which are fair. No regulation or diversion.

Revisions (water years).--WSP 1447: 1952.

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

0.3 

.4 

.5

0.4

.7

1.1 1.0

1.8 

3.9 

6.6

1.2 

1.4 

1.6

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsra

In.

Ac-ft

Oct.

0.7

.7

.7

.7

*.7

.7

.7

.7

.7

.9

1.1

1.0

.9

.8

.8

.8

.8

1.0

.9

.8

.8

.9

1.0

1.0

1.0

1.8

T76

1.2

1.2

1.6 

1.2

29.4

0.95

0.211

0.24

58

Nov.

1.1

1.0

1.1

1.0

l.O

1.1 1.1 1.1

1.1 1.1

1.1

1.0

1.1

.9

.9

1.0

1.3

1.1is

17T

1.1

1.0

1.0

1.0

.9

.9

.9

b.8

b.8

b.8

30.2

1.01

0.224

0.25

60

Dec.

bO. 8

bis

.8

.8

.8

.8

.8

.8

b.9

bl.2

 1.6

.7

.4

.3

.3

.2

.2

1.1

1.0

bl.O

bl.O

bl.O

bl.O

l.O

b.9

b,9

b.9

b.9

b.9 

b.9

31.5

1.02

0.227

0.26

62

Jan.

bO. 9

b.9

b.9

b.8

b.8

b.8

b.9

b.9

b.8

b.8

b.8

b.8

b.9

.9

b.8

b.8

b.8

.8

.8

.9

.8

.8

.8

.8

.8

.8

.8

a. 7

aTT

a. 7

25.6

0.83

0.184

0.21

51

Feb.

1.1

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 1.1

1.1

1.1

1.0

l.O

1.0

1.1

1.0

bl.l

bl.3

b2.0

b4.O

b4.2

472

3.4

42. 0

1.50

0.333

0.35

83

Mar.

3.2

2.8

2.7

2.6

2.6

275" 2.4

2.8

3.3

3.4

3.4

4.1

b3.8

b3.5

3.4

3.4

3.4

*3.2

3.3

3.4

3.4

3.3

3.2

3.3

3.4

3.4

3.5

3.6

4.1

4.7 

5.0

104.1

3.36

0.747

0.86

206

Apr.

576" 5.O

5.0

5.1

6.7

9.1

a8.0

a7.5

a7.5

a8.5

a9.5

a9.5

a9.5

alO

all

all

alO

a9.5

a9.5

alO

a!2

*13

aTJ

a!2

all

all

alO

alO

all

*12

281.9

9.4O

2.09

2.33

559

May

13

14

*16

16

16

17

18

19

18

18

17

18

18

18

18

20

19

20

22

*2T

19

18

17

15

13

12

11

11

10

9.3

500.2

16.1

3.58

4.13

992

June

§,5

775

7.3

6.6

6.2

5.8

a5.5

5.2

5.0

4.6

4.4

4.1

4.1

4.0

3.8

3.5

3.3

3.1

*3.0

3.0

2.7

2.6

2.5

2.4

2.3

2.4

2.3

2.2

2.1

i-9

122.0

4.07

0.904

1.01

242

July

1.9

1.8

1.8

1.7

1.6

1.5

1.5

1.5

1.4

1.3

1.2

1.2

1.1

1.1

*1.1

l.O

1.0

1.0

l.O

.9

.9

.9

.8

.8

.8

.8

.8

.8

.8

77-

35.4

1.14

0.253

O.29

70

Aug.

0.7

TT

.7

.7

.6

.7

.6

.6

.6

.6

.6

.6

.6

.6

i5-

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

*.5

.5

.5

.5

.6 

.6

17.6

0.57

O.127

0.15

35

Sept.

"75" 0.6

.5

.5

.5

t*

.4

.5

.5

*.5

.5

.5

.5

.4

.4

.4

.5

.5

.5

.5

.5

.5

.5

*.5

.5

.5

.5

.5

.5

14.5

0.48

0.107

0.12

29

Calendar year 1956: Max 19 Mln 0.6 Mean 3.03 Cfsra 0.673 In. 9.14 Ac-ft 2,2OO

Water year 1956-57: Max 22 Mln O.4 Mean 3.38 Cfsra 0.751 In. 10. 2O Ac-ft 2,450

Peak discharge (base, 4.5 cfs).--Feb. 26 (5:3O p.m.) 5.7 cfs (0.94 ft); Mar. 12 (8 a.m.) 4.5 cfs

(O.85 ft); Apr. 5 (10 p.m.) 11 cfs (1.26 ft); Apr. 22 (4 to 10 p.m.) 13 cfs (1.35 ft); May 12

(6.50 p.m.) 24 cfs (1.65 ft). ___ ___ ____ _____

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Moore 

Creek above Roble Creek, Roble Creek near Arrowrock, and other nearby streams, 

b Stage-discharge relation affected by Ice.
BOISE RIVER BASIN 147

Moore Creek above Roble Creek, near Arrowrock, Idaho

Location. Lat 43°38'45", long 115°58'45", in SE£ sec. 28, T. 4 N., R. 4 E., on left bank 

at state roadside park, 1.7 miles upstream from Robie Creek, 5 miles northwest of 

Arrowrock, and 5.8 miles upstream from mouth.

Drainage area. --399 sq mi.

Records available. --October 1950 to September 1957.

Gage . Water-stage recorder. Altitude of gage is 3,120 ft (from topographic map).

Average discharge. 7 years, 349 cfs (252,700 acre-ft per year).

Extremes . --Maximum discharge during year. 2,210 cfs Apr. 6 (gage height, 6.45 ft); maximum 

 gage height, 6.46 ft Feb. 25 (ice Jam); minimum discharge, 28 cfs Aug. 24, 25, 27, 28;

minimum gage height, 1.90 ft Sept. 10.

1950-57: Maximum discharge, 5,440 cfs Dec. 23, 1955 (gage height, 9.55 ft); minimum, 16 cfs Sept. 2-11, 1955; minimum gage height, 1.86 ft Sept. 6, 7, 1955.

Remarks . Records excellent except those for periods of ice effect or no gage-height record , which are fair. Diversions above station and from Robie Creek for irrigation of 

about 900 acres.

Rating tables, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Feb. 26

per second) 

Feb. 27 to Sept. 30

2.1

2.5

2.6

46

65

107

2.9 173

3.2 260

3.6 405

1.8 

2.0 

2.2 

2.4 

2.7

24

40

61

87

142

3.0 

3.5 

4.0 

5.0 

6.2

220

396

655

1,220

2,020

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

54

52

*51

50

BT

50 

50

50

55

64

83

91

81

73

70

66

65

67

81 

78

73

71

77

85

87

122

163 

128

104

135

175

2,500

80.6

0.202

0.23

4,960

Nov.

124

107

99

97

96

101 

109

*105

105

105

109

111

120

118

88

102

130

~9T 139

90

97

101

99

96

93

88

84 

83

83

84

3,057

102

0.256

0.28

6,060

Dec.

78

83

97

99

93

91 

87

61

5T

90

280

332

393 *35o

251

212

190

170

160 

140

140

140

130

150

125

110

110 

115

125

115

115

4,694

151

0.378

0.44

9,310

Jan.

115

120

T6T

95

90

95 

100

100

95

90

90

100

110

105

100

90

85

85

90 

100

100

90

95

100

90

85

80 

80

7575"

*90

2,920

94.2

0.236

0.27

5,790

Feb.

110

110

110

100

loTT

100 

100

110

120

115

110

110

120

140

150

150

140

130

130 

140

150

160

200

340

570

1,000

1.280 

962

-

7,057

252

0.632

0.66

14,000

Mar.

700

620

580

500

557J

550 

580

650

800

780

700

800

650

580

560

580

580

580

600 

660

700

*640

587

582

640

640

646 

668

745

932

1,080

20,460

660

1.65

1.91

40,580

Apr.

1,030

962

998

986

1,200

1,960 

1,560

1,430

1,410

1,460

1,510

1,560

1,600

1,680

1,730

1,560

1,490

1,400

1,320 

1,320

1,340

*1,340

1,360

1,300

1,160

1,030

938 

932

1,030

*1,180

39,776

1,326

3.32

3.71

78,890

May

1,250

1,320

*1,360

1,250

1,170

1,190 

1,270

1,300

1,270

1,280

1,310

1,320

1,420

1,470

1,420

1,500

1,460

1,560

1,950 

*1,780

1,560

1,410

1,270

1,180

1,140

1,120

lj.100 

1,110

1,120

1,120

1,130

41,090

1,325

3.32

5.85

81 , 500

June

1,080

1,050

1,060

1,030

1,010

968 

S78

842

784

690

646

598

572

552

522

480

435

405

*392 

588

376

348

329

314

297

280

276 

260

244

23_2

17,358

578

1.45

1.62

34,390

July

220 209"

192

1S2

171

159 

154

149

138

129

123

119

110

107

*101

98

95

92

89 

86

86

85

80

76

72

67

66 

65

60

58

56_

5,490

113

0.285

0.35

6,920

Aug.

53

BT

51

49

47

45 

46

46

44

43

41

39

38

37

35

54

34

33

32 

51

50

30

29

29

28_

*29

28 

29

33

36

41

1,172

37.8

0.095

0.11

2,320

Sept.

41

39

36

34

53

32 

31

50

50

50

55

35

55

53

53

34

33

34

39

43

45

44

42

41

*41

59

38 

36

38

38

1,086

36.2

0.091

0.10

2,150

Calendar year 1956: Max 2,350 Mln 42 Mean 445 Cfsm 1.12 In. 15.18 Ac-ft 323,200

Water year 1956-57: Max 1,960 Mln 28 Mean 396 Cfsm 0.992 In. 13.49 Ac-ft 286,900

Peak discharge (base, 800 cfs). Feb. 26 (7:50 p.m.) 1,690 cfs (5.77 ft); probably Mar. 10, time 

and discharge unknown; Apr. 6 (4:50 a.m.) 2,210 cfs (6.45 ft); May 19 (8:30 a.m.) 2,000 cfs 

(6.17 ft)._____________________________________________________________________

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 9-11, about Dec. 25 to Feb. 26. No gageheight record Oct. 1, 2, Dec. 17 to Jan. 30, Mar. 1-21; discharge estimated on basis of weather 

records, recorded range In stage, and records for Robie Creek near Arrowrock and Boise River near 

Twin Springs.
148 BOISE RIVER BASIN

Robie Creek near Arrowrock, Idaho

Location.--Lat 43°37'30", long 115°59'45", in N? sec. 5, T. 3 N., R. 4 E., on left bank 

0.5 mile upstream from mouth and 5 miles northwest of Arrowrock.

Drainage area.--15.8 sq mi.

Records available.--October 1950 to September 1957.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 3,080 ft (from 

topographic map).

Average discharge.--? years, 9.40 cfs (6,800 acre-ft per year).

Extremes. Maximum discharge during year, 92 cfs Apr. 5 (gage height, 2.24 ft); minimum, 

 0"76~~cfs Aug. 20, 21, 22, 23; minimum gage height, 0.78 ft Aug. 20, 21, 22, 23, Sept. 7. 

1950-57: Maximum discharge, 163 cfs Dec. 23, 1955 (gage height, 2.67 ft); minimum,

0.1 cfs several days in August and September 1955; minimum gage height, 0.58 ft Aug. 11,

30, 31, 1955.

Remarks. Records good except those for periods of ice effect, which are fair. Small 

diversions above station for irrigation.

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

0.8

.9

1.0

0.7 

1.4 

2.5

1.2 

1.4 

1.6

1.8 

2.0 

2.2

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

1.7

1.7

1.7

1.7

*2.0

1.8

1.7

1.6

TTs

2.6

3.e

3^4

3.6

3.4

3.2

3.2

2.8

3.1

3.2

3.0

2.6

2.6

3.0

3.0

3.2

5.8

6.0

470

3.7

5.2

5.2

95.3

3.07

0.194

0.22

189

Nov.

4.2

3.8

3.7

3.8

3.8

4.2

4.4

*4.0

4.0

4.0

4.2

4.0

5.0

T74

3.7

3.8

4.2

3.8

5.0

3.4

3.4

3.4

3.2

3.4

3.6

3.4

3.2

3.1

3.2

112.7

3.76

0.238

0.27

224

Dec.

3.1

3.1

3.2

3.4

3.0

3.0

2.8

b2.6

b3~70

3.7

13

10

19

*T3

9.0

7.4

6.2

5.8

5.2

b4.8

b4.6

b4.5

5.2

4.4

4.2

b3.8

b3.6

b3.8

4.0

3. 8

170.0

5.48

0.347

0.40

337

Jan.

3.6

b3.2

b3.1

b3.0

b3.0

b3.1

b3.2

b3.3

b3.3

b3.1

b3.1

3.4

3.6

3.6

5.7

3.6

b3.1

b2.9

b3.0

b3.5

b3.6

b3.5

b3.4

b3.3

b3.0

b2.9

b2.8

b27S~

b2.9

b3.1

*3.7

100.4

3.24

0.205

0.24

199

Feb.

3.7

3.7

3.6

3.6

3.6

3.6

3.6

3.6

3.6

5.4

3.4

3.6

*3.6

4.2

4.2

4.2

4.4

4.2

4.4

4.6

4.4

4.6

*9.0

14

*23

56

50

35

-

272.8

9.74

0.616

0.64

541

Calendar year 1956: Max 71 Min 0.8

Mar.

29

26

24

2l_

24

21

24

27

32

32

29

33

27

24

23

24

24

24

25

28

30

*27

25

24

27

28

27

27

32

44

850

27.4

1.73

2.00

1,690

Apr.

41

38

35

33

52

68

54

49

45

44

46

47

48

49

45

43

43

39

38

38

41

*39

38

38

32

29

27

26

27

29

1,221

40.7

2.58

2.87

2,420

May

30

30

*32

29

26

25

24

23

22

22

21

22

22

25

27

25

23

27

34

*34

31

28

25

23

21

20

18

17

16

14

13.

749

24.2

1.53

1.76

1,490

June

12

IT

10

9.0

8.2

.4

.2

.2

.4

.2

6.5

6.2

6.2

6.5

6.7

6.7

6.2

6.0

5.8

*5.6

5.4

5.2

4.8

4.0

4.2

4.6

4.4

4.0

3.6

3J2.

192.4

6.41

0.406

0.45

382

July

3.2

370

2.6

2.6

2.5

2.1

2.1

2.0

1.7

1.6

1.6

1.5

1.5

1.5

*1.4

1.3

1.2

1.1

1.3

1.3

1.3

1.4

1.3

1.1

1.1

1.0

1.0

1.0

1.0

1.0

.9

49.2

1.59

0.101

0.12

98

Aug.

0.9

.8

.8

.9

.8

.8

.8

T7Q- 1.0

1.0

1.0

.9

.9

.8

.8

.9

.8

.8

.7

77

.7

.7

*.7

.7

.7

.8

.8

.8

.8

. 8

25.4

0.82

0.052

0.06

50

Sept.

~78 0.8

.8

1.1

.9

.9

.8

.8

.8

.8

1.0

1.0

1.0

1.1

1.1

1.1

1.1

1.2

1.5

1.5

1.7

2.0

1.6

1.8

*1.8

1.7

1.7

1.8

1.7

1.6

37.5

1.25

0.079

0.09

74

Mean 10.7 Cfsm 0.677 In. 9.22 Ac-ft 7,760

Water year 1956-57: Max 68 Min 0.7 Mean 10.6 Cfsm 0.671 In. 9.12 Ac-ft 7,690

Peak discharge (base, 35 cfs . Feb. 26 (4 a.m.) 88 cfs (2.23 ft); Mar. 9 (5 p.m.) 41 cfs (1.84 ft);

Mar. 12 (10 a.m.) 38 cfs (1.81 ft); Mar. 20 (11 p.m.) 39 cfs (1.82 ft); Mar. 31 (3 to 4 p.m.)

49 cfs (1.92 ft); Apr. 5 (9:30 p.m.) 92 cfs (2.24 ft); May 19 (7 to 8 p.m.) 38 cfs (1.83 ft).

Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
BOISE RIVER BASIN 149

Lucky Peak Reservoir near Boise, Idaho

Location. Lat 43°32', long 116°04 I , in SW^NWi sec. 12, T. 2 H., R. 3 E., at outlet control tower at dam on Boise River, 2 miles upstream from diversion dam for New York 

Canal, 7 miles downstream from Moore Creek, and 9 miles southeast of Boise.

Drainage area.--2,680 sq mi, approximately. 

Records available. October 1954 to September 1957.

Gage. Remote registering water-stage recorder. Datum of gage is at mean sea level 

[level by Corps of Engineers). Prior to May 13, 1955, staff gage at same site and 

datum.

Extremes. Maximum contents during year, 294,050 acre-ft June 20 (elevation, 3,055.33ft); 

minimum, 62,760 acre-ft Sept. 30 (elevation, 2,938.52 ft).

1954-57; Maximum contents, 305,130 acre-ft June 25, 1955 (elevation, 3,059.32 ft); 

minimum since near-full capacity was attained on June 25, 1955, 29,250 acre-ft Oct. 15, 

1955 (elevation, 2,905.69 ft).

Remarks.--Reservoir is formed by earth-fill dam. Storage began Oct. 16, 1954. Dam completed in February 1955. Capacity, 307,040 acre-ft between elevations 2,824.0 (floor 

of outlet tunnel) and 3,060.0 ft (spillway crest). Minimum proposed operating level, 

2,905.0 ft (28,770 acre-ft), but all storage can be released. Water is stored for 

flood control and irrigation of lands in Boise Valley.

Cooperation.--Gage-height record and capacity table furnished by Corps of Engineers.

Capacity table (elevation, in feet, and usable contents, in acre-feet)

2,930.0

2,940.0

2,960.0

2,980.0

52,710

64,600

92,370

125,090

3,000.0

3,020.0

3,040.0

3,060.0

162,790

205,580

253,570

307,040

Usable contents, in acre-feet, at 12 p.m., water year October 1956 to September 1957

Day

1

2 

5

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

Cl

Oct.

142,600

136,750 

131,270 

125,700 

120,110

114,400 

108,690 

102,950 

97,220 

95,020

94,550 

94,460

94,390 

94,500

94,580

94,790 

94,950 

95,240 

95,450

95,590 

95,810 

96,020 

96,270 

96,580

96,970 

97,310 

97,650

97,950 

98,310 

98,710

2,964.12 

-49,580

Nov.

99,030

99,280 

99,560 

99,800 

100,050

100,330 

100,620 

100,880 

101,170 

101,410

101,710 

101,990

102,260 

102,550 

102,790

102,840

103,030 

103,300 

103,570 

103,810

104,020 

104,250 

104,470 

104,700 

104,920

105,110 

105,290 

105,450

105,630 

105,830

2,968.59 

+7,120

Dec.

106,020

106,210 

106,470 

106.680 

106,880

107,110 

107,340 

107,450 

107,550 

107,760

108,430 

109,280

110,220 

111,030 

111,630

112,110

112,530 

112,910 

113,280 

113,550

113,850 

114,050 

114,300 

116,920 

120,920

124,790 

128,700 

132,640

136,570 

140,460 

144,410

2,990.58 

+38,580

Jan.

148,310

152,210 

156,090 

159,930 

163,670

167,550 

171,350 

175,190 

179,140 

183,000

186,810 

190,720

194,640 

198,630 

202,940

207,400

211,980 

216,560 

221,080 

225,630

230,130 

234,600 

239,000 

243,440 

247,900

252,430 

256,830

261,240

265,660 

269,940 

271,170

3,046.82 

+126,760

Feb.

271,250

272,100 

272,310 

271,600 

270,750

269,780 

268,790 

267,820 

266,650 

265,350

263,740 

263,170

263,350 

263,610 

264,470

265,690

266,880 

268,090 

269,290 

269,970

269,050 

267,430 

265,970 

264,860 

265,090

270,600 

279,860 

283,270

3,051.37 

+12,100

Mar.

282,090

278,980 

275,580 

271,960 

267,490

261,550 

256,420 

251,120 

245,960 

240,670

235,530 

230,630

225,390 

220,160 

214,840

209,450

211,910 

216,840 

222,350 

227,870

233,480 

238,950 

242,400 

240,450 

236,750

252,420 

228,090 

223,800

219,760 

216,100 

212,650

3,023.09 

-70,620

Apr.

209,040

205,400 

201,860 

198,030 

194,580

196,300 

203,590 

211,910 

220,780 

230,460

231,230 

230,320

228,370 

226,650 

224,910

222,420

219,720 

216,750 

213,660 

210,280

206,690 

202,890 

201,070 

200,020 

199,660

199,570 

199,260 

198,610

297,700 

197,370

5,016.34 

-15,280

May

196,790

196,810 

197,540 

197,770 

197,630

197,210 

197,250 

198,160 

199,010 

199,950

200,870 

201,830

202,910 

204,360 

206,170

208,220

209,750 

211,500 

214,840 

218,410

221,460 

230,920 

233,440 

235,620 

237,700

239,660 

241,510 

243,420

245,530 

248,030 

250,520

3,038.79 

+53,150

June

253,020

255,660 

258,440 

260,260 

260,670

264,250 

268,740 

272,410 

275,260 

277,390

281,020 

284,050

286,300 

287,900 

288,930

289,960

291,490 

292,750 

293,690 

294,020

294,020 

294,020 

293,850 

293,610 

293,170

292,700 

292,780 

292,640

292,260 

292,400

3,054.73 

+41,880

July

292,450

292,260 

292,070 

291,880 

291,820

292,120 

292,370 

292,570 

292,210 

291,930

291,800 

291,690

291,470 

291,360 

291,380

291,190

291,190 

291,380 

291,580 

291,410

291,270 

291,190 

291,170 

291,080 

290,890

290,840 

290,870 

290,780

290,650 

290,460 

290,020

3,053.86 

-2,380

Aug.

289,530

289,390 

289,230 

288,820 

288,220

288,220 

288,280 

288,250 

288,050 

287,710

287,270 

287,000

286,760 

286,430 

285,750

284,890

284,130 

283,540 

282,790 

282,440

282,300 

282,200 

280,830 

279,010 

277,940

276,590 

274,680 

273,780

273,020 

272,020 

271,280

3,046.86 

-18,740

Sept.

270,750

266,750 

259,440 

251,200 

243,120

234,940 

266,580 

218,710 

210,850 

203,000

195,220 

187,390

179,860 

172,460 

165,110

157,980

150,760 

145,940 

156,990 

150,060

123,520 

116,940 

110,450 

103,830 

97,140

90,410 

83,550 

76,600

69,680 

62,760

2,938.52 

-208,520

Calendar year 1956.................... * +65,150

Water year 1956-57.................... * -85,530

t Elevation, in feet, at end of month, 

t Change in contents, in acre-feet.
150 BOISE RIVER BASIN

Boise River near Boise, Idaho

Location.--Lat 43°32', long 116°04', in NE^ sec. 11, T. 2 N., R. 3 E., at gate-control 

house at outlet works of Lucky Peak Reservoir, 1.8 miles usstream from diversion dam 

for New York Canal, 7| miles downstream from mouth of Moore Creek, and 9 miles southeast of Boise.

Drainage area. 2,680 sq mi, approximately.

Records available. January 1895 to September 1916 (no winter records 1904-5, 1907), 

October 1954 to September 1957. Published as "near Highland" 1905-15 and as "below 

Moore Creek, near Arrowrock" 1916.

Gage. Remote recorder records of openings of six slide gates, one hollow-jet valve, and 

elevation of Lucky Peak Reservoir. Prior to Mar. 18, 1905, staff gages at sites about 

1 mile downstream at different datums. Mar. 18, 1905, to Mar. 20, 1915, staff gages, 

and Mar. 21, 1915, to Sept. 30, 1916, water-stage recorders at sites 5 to 7 miles 

upstream at different datums.

Average discharge. 20 years (1895-96, 1897-1903, 1905-6, 1907-16, 1954-57), 3,059 cfs 

(2,215,000 acre-ft per year).

Extremes.--Maximum discharge during year, 10,600 cfs June 6-10; minimum, 1 cfs Oct. 16 to 

Feb. 3, Mar. 18-22, when gates were closed.

1895-1916, 1954-57: Maximum discharge observed, 35,500 cfs June 14, 1896; no flow 

Oct. 17, 1954, to Feb. 18, 1955, Feb. 20, 1955, during building of gate structure at 

Lucky Peak Dam.

Remarks. Records excellent except those below 10 cfs, which are poor. Discharge

measurements generally made 2 or 3 times a month,except when gates were closed. Daily 

discharge computed frmm gate ratings. Flow regulated by Lucky Peak Reservoir (see 

preceding page), Arrowrock Reservoir1 (see p. 145), and Anderson Ranch Reservoir (see 

P. 143). Small diversions from tributaries upstream for irrigation.

Cooperation. Records of gate operation, stage in Lucky Peak Reservoir, and gate rating 

curves furnished by Corps of Engineers.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

5,100 

3,000

2,880

*2,920

2,980

3,020

3,040 

3,050

3,050

1,270

413

188

164

164

55

1

T

1

1

1

1

1

1

1

1

1

1

1

1 

1

l

29,310

945

58,140

Nov.

1 

1

1

1

1

*1

1

1

1

1

1

1

1

1

1

1

1

1

1

30

1.0

60

Dec.

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

31

1.0

61

Jan.

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

31

1.0

61

Feb.

1

T

1

492

546

615

*615 

615

751

829

964

1,070

1,090

1,090

1,090

1,090

1,090

1,090

1,090

1,090

1,090

1,090

1,090

1,090

1,080

*1,090

1,510

5.110

-

.......

26,370

942

52,300

Mar.

4,280 

4,610

4,610

4,610

*5,030

5,460

5,520

5,570

5,590

5,590

5,570

5,550

5,510

*5,490

5,450

5,430

1,800

1

1

1

1

1

1,080

3,710

4,700

5,010

5,010

*5,020

4,940

4,880 

4,920

124,945

4,030

247,800

Apr.

4,900 

4,880

4,920

4,920

5,860

4,450

1,090 

1,050

1,060

602

5,280

6,270

6,860

6,870

6,880

,060

* ,160

,170

,160

,360

,460

,520

,790

*8,050

8,120

8,120

8,120

8,130

8,570

---'- 

182,492

6,083

362,000

May

*9,180 

9,510

9,580

9,580

9,580

9,650

9,436 

9,040

9,040

9,060

9,060

9,070

9,070

8,970

*8,730

8,660

8,940

9,150

8,740

8,490

8,560

5,210

8,670

8,760

8,780

8,780

8,800

8,820

*8,760

8,700 

8,720

275,070

8,873

545,600

June

8,740 

8,760

8,750

9,330

* 10, 200

10,500

10.600 

10,600

10,600

9,690

8,190

7,660

6,970

6,250

6,070

6,090

5,740

5,230

5,050

5,050

4,940

4,800

4,860

4,860

*4,920

5,120

4,950

5,080

5,150

5,190

209,940

6,998

416,400

July

5.190 

*5,190

5,190

5,160

5,120

5,110

5,110 

5,110

5,100

5,110

5,080

5,060

5,060

5,060

5,060

5,060

5,060

4,930

4,790

4,960

4,940

4,860

4,770

4,740

*4,720

4,670

4,640

4,620

4,610

4,600 

4,710

153,390

4,948

304,200

Aug.

4,710 

4,676

4,650

4,650

4,590

4,560

4,590 

4,590

4,590

4,590

4,590

4,590

4,580

*4,580

4,580

4,580

4,570

4,570

4,570

4,640

4,640

4,630

4,620

4,620

4 f 180

4,190

*4,560

4,580

4,530

4,480 

4,440

141,510

4,565

280,700

Sept.

4.420 

4,400

4,290

4,250

4,250

4,220

4,170 

4,140

4,140

4,120

4,070

*4,030

3,980

3,850

3,770

3,740

3,750

3,770

3,610

3,560

3,460

5, 400

3^410

*3,480

3,520

3,540

3,540

3,570

3,570

3,550

115,570

3,852

229,200

Calendar year 1956 : Max 9,470 Mln 1 Mean 4,005 Ac-ft 2,907,000

Water year 1956-57 : Max 10,600 Mln 1 Mean 3,448 Ac-ft 2,497,000

* Discharge measurement made on this day.

Note. Discharge Oct. 16 to Feb. 3, Mar. 18-22, when gates at dam were closed, estimated on basis 

of 2 discharge measurements.
BOISE RIVER BASIN 151

Lake Lowell near Caldwell, Idaho

Location.--Lat 43°35', long 116°45', in SE-J- sec. 19, T. 3 N., R. 3 W., on outlet structure 

at lower embankment, 2 miles west and 5 miles south of Caldwell, and lat 43°34' , 

long 116°39' , in NW^- sec. 36, T. 3 N., R. 3 W., on outlet structure at upper embankment 1 mile south and 4 miles west of Nampa.

Records available. October 1917 to September 1957. 

Deer Flat Reservoir near Caldwell.

Prior to October 1945, published as

Gage.--Staff 

(surveys c

gages read once daily. Datum of gages is1 2,500.5 ft above mean sea level 

f Bureau of Reclamation).

Extremes. Maximum contents observed during year, 174,700 acre-ft May 16, 19 (gage height, 

29.75 ft); minimum observed, 26,920 acre-ft Aug. 30 (gage height, 9.08 ft, upper pool; 

8.05 ft, lower pool).

1917-57: Maximum contents observed, 178,900 acre-ft Apr. 27, 28, 1922, Apr. 24, 

1932 (gage height, 30.18 ft); minimum observed, 5,390 acre-ft Oct. 22, 1924 (gage 

height, 3.27 ft, upper pool; 0.85 ft, lower pool).

Remarks. Reservoir is formed by two earth embankments; dams were completed and storage 

Began in 1908. Capacity, 177,150 acre-ft, between gage heights 0.0 (sill of outlet 

gates) and 30.0 ft (maximum operating level). Dead storage, about 13,000 acre-ft. 

Below gage height 12.0 ft, 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.

Cooperation. Gage readings and capacity table furnished by Board of Control for Boise 

project.

Capacity table (gage height, In feet, and usable contents, 

in acre-feet)

8.0 24,380 20.0 93,040

10.0 33,180 22.0 107,900

12.0 43,080 24.0 123,700

14.0 54,060 26.0 140,500

16.0 66,110 28.0 158,200

18.0 79,110 30.0 177,200

Usable contents, in acre-feet, at about 8 a.m., water year October 1956 to September 1957

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

(t)

{*)

Oct.

75.770 

78,170

79,710

81 , 340

83,120

84,080

85,750

87,560

88,830

90,600

91 , 740

91,960

91,740

91,310

91,030

91,390

91,310

91,460

91 , 600

91,670

91,820

91,820

91 , 890

92,030

92,320

92,680

92,820

93,040

93,180

93,320

95,610

20.08

+19,350

Nov.

93.760 

93,900

94,120

94,190

94,330

94,480

94,620

94,700

94,840

94,990

95,280

95,420

95,570

95,720

95,720

95,790

95,790

95,860

96,010

96,080

96,220

96,300

96,370

96,370

96,520

96,660

96,810

96,960

97,100

97.250

20.58

+3,640

Dec.

97,400

97,470

97,620

97,840

98,060

98,200

98,350

98,500

98,720

99,010

99,460

99,610

99,750

99,900

100,100

100,100

100,300

100,300

100,400

100 , 500

100,600

100,700

100,700

100,800

100,900

100,900

101,000

101,000

101,200

101,200

101,300

21.13

+4,050

Jan.

101,400

101,500

101,500

101,600

101,700

101,800

101,800

101,900

102,000

102,100

102,100

102,200

102,200

102,400

102,400

102,400

102,500

102,600

102,700

102,800

102,800

103,100

103,100

103,200

103,300

103,300

103,400

103,600

103,600

103,700

103,700

21.45

+2,400

Feb.

103.800

103,900

103,900

104,000

104,100

105,200

106,400

107,700

109,000

110,400

111,900

113,700

115,700

117,800

119,700

121,800

123,700

125,800

127,800

129,900

132,000

134,100

135,900

138,200

140,200

142,400

144,500

146,500

_

26.69

+42,800

Mar.

148,300

150,300

151,400

151,500

152,100

151,900

151,900

151,700

151,700

151,500

151,500

151,400

151,400

151,200

151,200

151,200

150,900

150,900

150,900

150,900

150,900

150,900

150,700

150,600

150,300

150,200

150,000

150,000

149,800

149,800

151,200

27.22

+4,700

Apr.

153,100

155,000

156,800

158,700

160,400

162,500

164,400

166,200

167,900

169,800

171,100

171,600

172,000

172,200

172,500

173,000

173,100

173,200

173,200

173,200

173,200

173,500

173,600

173,800

174,000

174,500

174,600

174,600

174,500

173,900

29.67

+22,700

May

173,000 

172,100

171,300

170,800

170,700

170,700

171,200

171,500

171,900

172,300

172,600

173,200

173,600

174,100

174,500

174,700

174,500

174,500

174,700

174,400

174,100

173,800

173,700

173,800

174,100

174,300

174,100

173,300

171,900

170,200

168,100

29.06

-5,800

June

165.900

163,700

161,600

159,700

157,500

155,300

153,900

151,800

150,500

148,700

147,500

146,500

144,700

143,400

142,000

140,800

139,600

138,600

137,100

135,400

133,600

131,800

130,200

128,400

126,600

124,600

122,400

120,500

118,100

115,800

23.02

-52,300

July

114,000

112,000

109,800

107,700

105,700

103,500

101,200

99,160

97,250

95,350

93,400

91,530

89,610

87,840

85,950

84,220

82,360

80,730

79,240

77,700

76,230

75,110

74,190

72,880

71,840

70,550

69,460

68,320

67,430

66,490

65.550

15.91

-50,250

Aug.

64.360 

63,000

61,600

60,320

59,060

57,750

56,390

54,870

53,320

52,010

50,150

48,710

47,180

45,560

44,280

42,740

41,580

40,300

39,430

38,200

36,970

35,750

34,550

33,450

32,210

30,750

29,180

28,090

27,690

26.920

27,030

(a)

-38,520

Sept.

27.660 

28,240

29,240

30,180

30,710

31 , 400

32,190

33,250

34,130

35, 300

36,680

37,970

39,530

41,100

42,690

44,280

45,770

47,340

48,600

49,540

51,780

53,550

55,160

56,800

58,220

59,720

60,930

62,090

63,560

64.860

 _ _

15.80

+37,830

Calendar year 1956. ................... * +15,140

Water year 1956-57 .................... * -9, 400

t Elevation, In feet, at end of month.

* Change in contents, In acre-feet.

a Upper pool, 9.00 ft; lower pool, 8.20 ft.
152 BOISE RIVER BASIN

Diversions from Boise River between near Boise and at Boise gaging stations, Idaho

Between near Boise and at Boise gaging stations (prior to 1955 water year, published as 

between Dowling Ranch and Boise gaging stations) , six principal canals and several small 

farm laterals divert water from Boise River for irrigation.

Records of total diversion during period April to September for each canal for years 

1919-46, combined daily diversion covering period April to September for years 1947-57, 

and daily flow of New York Canal February 1939 to October 1948 in reports of Geological 

Survey. Records of daily diversion for each canal from 1916 to 1957 on file in office of 

Idaho State Reclamation Engineer. No record of October and March diversion except for 

New York Canal. Diversion through New York Canal for period October to March as reported 

by Boise project, Board of Control were: October, 45,470 acre-ft, February, 46,180 acreft; March, 4,830 acre-ft.

Records show summation of discharge for these diversions. Staff gages on canals read 

daily or several times weekly and discharge measurements made frequently. Field data 

obtained and records summarized under direction of E. B. Karn, watermaster for Boise River.

Discharge, in cubic feet per second, April to September 1957

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

Total

Mean

Ao-ffc

Oct. Nov. Dec. Jan. Feb.

Calendar year : Max Min

Mar. Apr.

1,040

1,040 

1,040

1,000

1,130

1,130

971

971

997

1,000

330

330

330

401

455

491

496

526

526

518

878

883

964

1,060

1,250

1,250

1,280

1,300

1,520

2,000

27,107

904

53,770

May

2,460

2,940 

3,080

3,100

3,100

3,180

3,250

3,250

3,280

3,280

5,520

3,290

3,260

3,160

2,940

2,760

2,900

2,960

2,890

2,260

2,250

2,260

2,580

2,470

2,480

2,440

2,870

3,310

5,260

3,260 

3,260

90,90O

2,932

180 ,3OO

June

3,550

3,340 

5,370

3,460

5,460

3,460

5,470

3,480

5,470

3,480

3,470

3,470

5,470

5,550

5.270

3,290

3,270

3,290

5,280

3,280

3,620

3,610

3,640

5,650

5,610

3,630

3,640

3,640

3,650

3,650

104,O8O

5,469

206,400

July

3,650

5,640 

3,640

5,640

3,650

5,650

5,640

5,630

3,640

3,640

5,620

3,620

3,630

3,630

3, 630

3,620

3,620

3,620

3,620

5,620

5,620

3,600

3,560

3,580

3,560

3,560

3,570

5.550

3,570

3,550 

5,560

111,870

3,609

221,900

Aug.

3,580

3,580 

3,580

3,590

5.600

3,590

3,580

3,570

3,570

5,560

5,580

5,580

3,570

5,580

5,570

3,520

5,510

3,510

5,510

3,510

3,520

5,530

3,520

3,520

2,920

2.900

3,540

3,530

3,530

3,520 

3,510

108,780

3,509

215,800

Sept.

5,510

5,500 

3,470

3,480

3,470

3,470

3,450

3,440

3,440

3,420

3,420

3,360

3,560

5,280

3,210

5,160

3,160

3,170

3,120

3,090

3,060

2,940

2.910

2,990

3,060

3,100

3,120

3,110

5,170

5,150

97,590

3,253

193,600

Mean Ac-ft

Water year : Max Mln Mean Ac-ft
BOISE RIVER BASIN 153

Boise River at Boise, Idaho

Location.--La t 43°37' , long 116°13', in SWir sec. 10, T. 3 N., R. 2 E., on right bank at 

Capital Boulevard Bridge at Boise.

Drainage area.--2,760 sq mi, approximately.

Records available.--March 1938 to September 1939 (gage heights only), February 1940 to 

September 1957.

Gage.--Water-stage recorder. Datum of gage is 2,675.46 ft above mean sea level (datum of 

Corps of Engineers, Boise River Surveys). Prior to Apr. 30, 1943, at site 1 mile 

upstream at datum 13.69 ft higher. Apr. 30 to July 10, 1943, at site 400 ft downstream 

at present datum.

Extremes.--Maximum discharge during year, 6,910 cfs June 8 (gage height, 7.28 ft); minimum 

daily, 6.0 cfs Jan. 28-31.

1940-57: Maximum discharge, 21,000 cfs Apr. 20, 1943 (gage height, 10.00 ft, site 

and datum then in use); minimum, 1.3 cfs Feb. 3, 1955 (gage height, 2.21 ft); minimum 

daily, that of Jan. 28-31, 1957.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are fair. Flow regulated by Arrowrock Reservoir (see p. 145), Anderson 

Ranch Reservoir (see p. 143), and Lucky Peak Reservoir (see p. 149). Mew York, Ridenbaugh, and four smaller canals (see p. 152) divert between station near Boise and this 

station.

Rating table, water year 1956-57, e 

height, In feet, and discharge

ept periods of Ice effect (gage 

In cubic feet per second)

2.4

2.5

2.6

2.7

2.8 

3.0 

3.3 

3.6

194

375

770

1,520

2,470

4,510

7,300

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-it

Oct.

447

415

407 

368

399

399

399

407

423

549

512

334

225

209

190

60

32

*29

26

22

20

18

2o

18

18

21

21

18

20

22

21

6,069

196

12,040

Nov.

19

17

18 

18

18

17

15

16

17

15

15

15

25

*26

TF

17

16

15

14

14

13

14 

13

13

14

13

12

13

11

IT

472

15.7

936

Dec.

11

11

11

11

11

11

11

10

10

11

18

TF

17

14

14

12

11

11

11

11

11

10 

11

9.6

9.0

9.0

8.4

874

8.4

8.4

8.4

343.6

11.1

682

Jan.

8.4

9.0 9~0

8.4

9.0

7.8

7.8

8.4

7.8

7.2

7.2

7.8

7.8

*8.4

8.4

7.2

7.2

7.2

a7.0

b7.0

b7.0

b7.0 

b7.5

b6.5

b6.5

a6.5

a6.5

a6.0

a67o

a6.0

a6.0

229.5

7.40

455

Feb.

b6.5

bTTo

b7.5 

b8.0

b25

b35

b35

b35

b35

b32

b30

*26

23

26

27

26

23

22

23

32

52

58 

115

96

90

131

312

1,800

-

3,138.0

112

6,220

Calendar year 1956: Max 6,840 Min 8.4

Mar.

3,010

4,130

4,640 

4,620

*4 J 970

5,530

5,570

5,570

5,620

5,640

5,620

5,600

5,550

5,530

5,490

5,510

2,850

135

90

76

71

62 378-

3,550

4,640

5,020

5,020

5,060

4,760

4,090

4,030

122,432

3,949

242,800

Apr.

,030

,030

,030 

,010

,760

4,330

279

135

107

98

4,120

5,800

6,420

6,420

6,440

*6,550

6,620

*6,610

6,620

6,550

6,530

6,530 

6,660

6,760

6,760

6,720

6,700

6,660

6,640

6 , 550

154,469

5,149

306 , 400

May

6,450

6,420

6,380 

6,400

6,400

6,380

6,180

5,780

5,780

5,820

5,850

5,910

5,930

5,930

5,960

6,030

6,110

6,270

6,340

6,270

*6,380

5,560 

6,500

6,380

6,400

6,290

5,940

5,660

5,550

5,440

5,400

185,690

5,990

368,300

June

5,390

5,390

5,330 

5,710

6,510

6,800

6,850

6,870

6,8So

6,210

4,950

4,210

3,720

2,890

*2,710

2,670

2,590

1,830

1,520

1,470

1,420

1,190 

1,270

1,240

1,300

1,330

1,300

1,580

1,470

1,540

103,710

3,457

205,700

July

1,560

*1,560

1,570 

1,560

1,520

1,490

1,490

1,490

1,490

1,470

1,440

1,420

1,420

1,440

1,420

1,400

1,400

1,350

1,160

1,290

1,320

1,270 

1,240

1,160

1,160

1,120

1,080

1,070

1,070

1,040

1,130

41 , 580

1,341

82,470

Aug.

1,160

1,140

1,100 

1,100

1,080

*1,080

1,080

1,080

1,080

1,100

1,100

1,100

1,100

1,080

1,080

1,070

1,070

1,080

1,070

1,070

1,080

1,060 

1,060

1,060

1,060

1,030

970

1,030

984

942

9°°

32,996

1,064

65,450

Sept.

874

887 835" 

747

*758

736

701

655

666

678

634

613

634

592

531

531

531

531

502

493

502

439 

439

455

455

455

447

439

439

439

17,638

588

34,980

Mean 2,237 Ac-ft 1,624,000

Water year 1956-57: Max 6,870 Min 6.0 Mean 1,832 Ac-ft 1,326,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for station 

near Boise.

b Stage-discharge relation affected by Ice.

503667 O - 51 - 11
154 BOISE RIVER BASIN

Spring Valley Creek near Eagle, Idaho

Location. Lab 43°44'20", long 116°18'00", on right bank in SE£ sec. 26, T. 5 N. , R. IE., 

half a mile upstream from mouth and 4 miles northeast of Eagle.

Drainage area. 20.9 sq mi.

Records available.--June 1954 to September 1957.

Gage.--Water-stage recorder and concrete control. Datum of gage is 2,721.70 ft above 

mean sea level, unadjusted.

Extremes. Maximum discharge during year, 244 cfs Feb. 26 (gage height, 2.85 ft); no flow 

for long periods.

1954-57: Maximum discharge, that of Feb. 26, 1957; no flow for long periods.

Remarks.--Records good except those for period of no gage-height record and those below 

about 1.0 cfs, which are poor. Diversions above station for irrigation.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.0

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8 

2.0 

2.2 

2.4

13.5

20

38

67

111

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

ZZ

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

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

.1

.1

.2

j.5.

0.9

0.03

1.8

Nov.

"72 0.3

.2

.2

.1

*0

0

0

0

0

0

0

*. !

3.3

0.11

6.5

Dec.

0.2

.2

.2

.3

.2

.2

.2

.2

.2

.3

2.6

274

*2.3

2.1

1.5

1.6

1.2

1.1

1.0

.9

b.6

.4

.6

.6

b.5

.4

b.3

.6

.6

.6

.6

24.7

0.80

49

Jan.

~0.6

.5

.6

.6

.6

*.6

.6

.5

b.5

.5

.5

.6

.5

.5

.3

b.2

b.2

b.2

b.5

b.5

b.5

b.5

b.3

b.3

b.2

b.2

b.2

b.2

*b,2

b.3

13.1

0.42

26

Feb.

bO.5

.8

.7

.6

.6

b.5

a. 5

a. 7

a. 8

al.O

al.2

al.6

al.8

a2.0

a3.5

a4.0

a2.5

*2.1

2.3

2.3

1.9

2.6

*50

76

54

*95

51

32

-

392.5

14.0

779

Mar.

26

23

22

23

28

26

*32

34

29

23

23

35

2T

26

26

29

33

29

29

28

29

27

26

22

24

22

21

18

*18

17.5 30~

805.5

26.0

1,600

Apr.

26

24

22

20

24

31

25

25

22

20

20

21

19.5

15.5

*14

14

16

13

9.3

5.3

7.0

7.4

5.3

6.0

6.7

6.4

5.3

4.8

4.6

2.9

443.0

14.8

879

May

1.9

276

*6.7

5.1

4.3

4.1

4.1

3.6

2.7

2.9

4.8

9.1

13.5

20

24

27

26

34

59

50

44

39

*36

34

31

28

26

24

20

18

17.5

622.9

20.1

1,240

June

15

11.5

8.8

7.8

7.0

6.4

6.0

6.7

6.0

5.1

4.6

4.1

4.1

4.1

*4.3

4.1

3.4

3.1

2.7

2.7

1.6

1.1

.5

.5

.4

.2

.3

.3

.2

.2

122.8

4.09

244

July

0.2

.1

.1

.1

.1

.2

.2

.2

*.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0_

0

0

*0

0

0

0

0

0

0

0

0

2.3

0.07

4.6

Aug.

(*)

0

0

0

Sept.

(*)

(*)

0

0

0

Calendar year 1956: Max 22 Mln 0 Mean 2.51 Ac-ft 1,820

Water year 1956-57: Max 95 Mln 0 Mean 6.66 Ac-ft 4,830

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Dry 

Creek near Eagle.

b Stage-discharge relation affected by ice.
BOISE RIVER BASIN 155 

Dry Creek near Eagle, Idaho

Location. Lat 43°43'55", long 116 "18'15", in NW£ sec. 35, T. 5 N., R. IE., on left bank 

80 ft downstream from State Highway 15, 500 ft downstream from Spring Valley Creek, 

and 3.6 miles northeast of Eagle.

Drainage area. 59.4 sq mi.

Records available. June 1954 to September 1957.

Gage. Water-stage recorder and concrete control. Datum of gage is 2,692.80 ft above 

mean sea level, unadjusted.

Extremes. Maximum discharge during year, 339 cfs Feb. 26 (gage height, 4.70 ft); minimum, 0.1 cfs at times in August and September; minimum gage height, 1.09 ft Oct. 2, 7.

1954-57: Maximum discharge, that of Feb. 26, 1957; minimum, 0.1 cfs Oct. 21-29, 

1954, Sept. 4, 5, 1956, and at times in August and September 1957; minimum gage 

height, 1.08 ft Sept. 6, 1954, Sept. 27, 1956.

Remarks.--Records good except those for periods of no gage-height record and those below 

about 1.0 cfs, which are fair. Diversions upstream for irrigation.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

 3. 0.2

* .2

.2

.2

.2

.2

.2

.4

.2

.2

.2

1.3

2.3

179

1.7

1.7

1.9

2.0

2.0

2.0

2.3

2.3

1.6

1.6

1.4

1.3

1.3

1.3

1.2

1.2

34.9

1.13

69

Nov.

1.2

T75

1.3

1.3 1.3

1.3

1.3

1.2

1.3

1.6

1.4

1.4

1.9

2.5

1.9

2.3

2.5

2.7

?75

2.3

2.3

2.3

1.7

1.7

1.7

1.6 *1.7

1.9

1.7

1.9

53.0

1.77

105

Dec.

2.0

2.3

2.7

2.7

2.7

2.9

2.7

2.5

2.5

3.3

9.7 974

*8.5

8.5

6.7

6.0

5.1

4.8

4.2

3.7

3.7

1.9

3.5

3.5

2.0

1.7

1.6

277

2.9

2.7

2.7

121.8

3.93

242

Jan.

2.7

2.5

1.6

1.7

1.9

2.0

*2.0

2.7

2.5

1.9

2.0

2.5

2.7

2.7

2.7

1.6

1.3

T74

1.4

2.9

2.7

2.5

2.3

2.5

1.9

1.6

al.6

al.8

a2.2

*2.3

2.3

66.4

2.14

132

Feb.

2.3

37T

2.7

2.5

2.5

2.3

2.3

2.7

2.7

2.5

3.1

3.5

3.7

11.5

17 '

18

11*8.9

9.4

8.9

8.9

8.9

*166

180

126

*184

1ST

82

998.4

35.7

1,980

Mar.

56

53

61

58

88

73

 92

94

95

80

79

~89 121

82

80

87

105

94

92

92

95

82

72

66

78

60

49

43

 45

47

81

2,389

77.1

4,740

Apr.

69

58

51

45

67

~58 108

80

79

79

79

83

83

72

*69

60

61

51

47

47

57

52

47

42

38

34

32

29

28

.21

1,762

58.7

3,490

May

25

25 *31

31

27

25

23

23

22

16.5

30

45

56

85

94

94

86

112

176

153

147

139 *122

108

89

86

80

77

72

66

57

2,222.5

71.7

4,410

June

52

46

40

34

30

27

25

28

27

23

22

20

18

18

*16.5

14.5

11

9.4

8.1

8.1

5.7

3.9

2.7

1.9

1.7

1.6

1.4

1.6

1.2

l._0

500.3

16.7

990

July

0.7

.7

.6

.6

.6

.8

1.0

.7 * .6

.7

.5

.4

.3

.3

.4

.4

.2

72

.2

.2

.2

.2

* .2

.2

.2

.2

.2

.3

.4

.4

.4

13.0

0.42

26

Aug.

~72 0.2

.2

.2

.4

.4

.4

.4

.4

.6

.3

.3

.3

.3

.3

.4

.6

.6 * .5

.4

.4

.2

.3

.3

.4

.2

.2

.2

.2

.2

.2

10.2

0.33

20

Sept.

0.1

TT

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

^3

5.0

0.17

9.9

Calendar year 1956: Max 69 Min 0.2 Mean 9.19 Ac-ft 6,680

Water year 1956-57: Max 184 Min 0.1 Mean 22.4 Ac-ft 16,210

* Discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weathe 

streams.

records and records for nearby
156 BOISE RIVER BASIN

Dry Creek at Eagle, Idaho

Location. Lat 43°41'45", long 116°22'05", in SW£ sec. 8, T. 4 N., R. IE., 40 ft downstream from State Highway 44, 0.4 mile upstream from mouth, and 0.7 mile west of Eagle,

Drainage area. 66.4 sq mi.

Records available. June 1954 to January 1957 (discontinued).

Gage. Water-stage recorder and concrete control. Datum of gage is 2,545.82 ft, unadjusted.

Extremes. Maximum discharge during period October 1956 to January 1957, 23 cfs Oct. 10 

(gage height, 3.39 ft); no flow for several days in January.

1954-57: Maximum discharge, 149 cfs Dec. 23, 1955; maximum gage height, 4.86 ft 

May 14, 1956; no flow for long periods.

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

' Diversions upstream for irrigation. Canals waste water into creek above station.

Rating table, Oct. 31, 1956, to Jan. 31, 1957 (gage height, In feet, 

and discharge, In cubic feet per second)

2.5

2.6 

Z.I 

2.8

2.9 3.2

3.0 5.9

3.2 13

3.4 24

Discharge, In cubic feet per second, 1956-57

Day

1

2

3

4

5

6

7

8

9

1Q

Oct.

13

12

*15

18

19

20

19

19

20

21

Nov.

0.5

.4

.4

.4

*.4

.4

.4

.4

.3

.3

Dec.

0.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

Jan.

0.2

.1

.1

.1

0

0

*o

0

0

0

Day

11

12

13

14

15

16

17

18

19

20

Oct.

17

4.2

2.6

2.0

1.6

1.3

1.2

1.2

1.0

.9

Nov.

0.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

Dec.

1.1

6.0

*4.8

6.9

4.4

3.9

2.8

2.4

2.0

1.5

Jan.

0

0

.1

.3

.3

0

0

0

0

.2

Day

21

22

23

24

25

26

27

28

29

30

31

Runoff In acre-feet ....................................................

Calendar year 1956: Max 81 Mln 0 Mean 18.1 A

Oct.

0.9

.9

.9

.8

.9

1.3

.9

.7

.6

.6

7.03

432

Nov.

0.2

.2

.2

.2

.2

.2

*.2

.2

.2

.2

17

Dec.

1.4

.2

.8

1.2

.2

.1

.1

.1

.2

.2

.2

1.35

83

Jan.

0.4

.3

.2

.1

.2

0

aO

aO

aO

*aO

a.l

0.09

54

c-ft 13,170

Discharge measurement made on this day.

No gage-height record; discharge estimated on basis of weather records and records for station 

near Eagle and nearby streams.

Diversions from Boise River between Boise and Notus gaging stations, Idaho

Between Boise and Notus gaging stations, 21 principal canals and several small farm 

laterals divert water from Boise River for irrigation.

Records of total diversions during period April to September for each canal for years 

1919-46 and combined daily diversion covering period April to September for years 1947-57 

in reports of Geological Survey. Records of daily diversion for each canal from 1916 to 

1957 on file in office of Idaho State Reclamation Engineer. Diversions usually made also 

during October and March; no record available.

Records show summation of discharge for these diversions. Staff gages on diversions 

read daily or several times weekly, and discharge measurements made frequently. Field 

data obtained and records summarized under direction of E. B. Karn, watermaster for Boise 

River.

Discharge, In cubic feet per second, 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Total 

Mean

Runof

Apr.

u0"

0

0

0

0

0

0

0

0

0

38

38

137

178

f In ac

May

1,820

2,020

,990

,890

,910

,920

,920

,970

,970

,980

,960

,890

,870

,850

1,780

re-feet

June

2,340

2,380

2,450

2,380

2,390

2,400

2,380

2,350

2,200

2,150

2,130

2,110

2,140

2,090

2,040

July

2,420

2,420

2,440

2,400

2,380

2,390

2,380

2,330

2,340

2,420

2,43O

2,390

2,360

2,380

2,360

Aug.

2,110

2,150

2,140

2,150

2,140

2.180

2,180

2,160

2,130

2,170

2,180

2,170

2,130

2,140

2,130

Sept.

1,900

,890

,830

,790

,800

,740

,670

,650

,630

,580

,520

,500

,460

,440

,410

Day

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Apr.

176

323

323

394

452

492

534

648

701

764

956

1,100

1,190

1,470

1,710

11,624 

387

23,060

May

1,740

1,710

1,730

1,400

1,150

1,090

1,100

1,210

1,310

1,450

1,590

1,910

2,040

2,150

2,250

2,300

54,870 

1,770

108,800

June

2,040

2,040

2,060

2,000

1 , 850

1,820

2,160

2,250

2,280

2,330

2,350

2,380

2,330

2,360

2,380

-

66,540

2,218

132,000

July

2,360

2,350

2,330

2,080

2,260

2,250

2,230

2,210

2,180

2,170

2,140

2,120

2,130

2,100

2,060

2j_05p

70,860 

2,286

140,500

Aug.

2,100

2,130

2,11O

2,110

2,100

2,090

2,100

2,080

2,080

2,050

2,060

2,060

2,060

2,010

1,960

1,930

65,290 

2,106

129,500

ept.

,400

,420

,400

,380

,350

,290

,270

,270

,220

,220

,220

,240

,220

,220

,190

44,120 

1,471

87,510
BOISE RIVER BASIN 157

Boise River at Notus, Idaho

Location. Lat 43"43", long 116°48', in SE£ sec. 34, T. 5 N., R. 4 W., on right bank 

1,100 ft upstream from county road bridge, a quarter of a mile southeast of Notus, 

and 7 miles northwest of Caldwell.

Drainage area. 3,820 sq mi, approximately.

Records available.--April 1930 to September 1957 (irrigation seasons only 1933-24).

Gage.--Water-stage recorder. Datum of gage is 2,288.55 ft above mean sea level (datum 

of Corps of Engineers, Boise River Surveys). Prior to Aug. 26, 1936, staff gage at 

site 1,100 ft downstream at same datum.

Extremes. Maximum discharge during year, 7,400 cfs May 19 (gage height, 7.56 ft); minimum, 124 cfs June 25 (gage height, 1.48 ft); minimum daily, 131 cfs June 26.

1920-57: Maximum discharge, 20,500 cfs Apr. 20, 1943 (gage height, 10.43 ft); minimum observed, 10 cfs Aug. 18, 21, 1920.

Remarks. Records excellent. Diversions above station for irrigation of about 309,300 

acres. Diversions between station and mouth for irrigation of about 5,300 acres. 

Plow regulated by Arrowrock Reservoir (see p. 145), Anderson Ranch Reservoir (see 

p. 143), and Lucky Peak Reservoir (see p. 149). Records of chemical analyses and 

water temperature for the water year 1957 are given in WSP 1523.

Revisions (water years). WSP 1347: 1930.

Rating table, water year 1956-57 (gage height, in feet, ana discharge,

in cubic feet per second)

(Shifting-control method used Feb. 24-26, Mar. 1-7, May 9 to 

June 11, Aug. 2-18)

1.4 

1.7 

2.0

106

193

306

2.5 

3.0 

4.0

580

960

1,910

5.0 

6.0 

7.6

3,110

4,560

7,240

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

548

548

541

554

541

497 509"

554

580

615

920

1,170

,090

,000

,210

,200

,080

,060

1,050 

1,000

984

952

968

960

960

1,040

1,040

992

952

944

936

26,995

871

53,540

Nov.

896

87?

848

84S

»840

824

816

800

800

800

784

776

792

784

768

760

760

752

728 

720

713

706

699

685

685

678

678

678

671

664

22,825

761

45,270

Dec.

664

657

657

657

650

643

*629

615

608

615

664

671

650

636

629

629

622

615

608 

608

615

601

594

587

580

580

580

574

574

574

567

19,153

618

37,990

Jan.

567

567

567

560

560

560

560

567

548

548

548

541

541

*534

528

522

522

515

515 

515

534

515

509

515

509

479

438

455

450

450

467

16,206

523

32,140

Feb.

473

1ST

485

479

479

485

491

497

509

534

587

*643

629

608

904

968

848

643

601 

622

594

601

636

2,710

*2,670

2,120

1,750

1,810

-

24,867

888

49,320

Mar.

3,240

4,120

5,070

5,250

5,360

6,040

6,310

6,410

6,430

6,430

6,410

6,670

6,530

»6,450

6,400

6,360

6,090

1,720

1,190 

1,080

1,020

968

912

2/57U

4,820

5,680

5,670

5,670

5,670

5,010

4,820

146,370

4,722

290,300

Apr.

4,860

4,770

4,740

4,740

4,750

5,990

2,710

1,200

1,080

896

1,980

5,780

6,550

6,820

6,770

»6,800

6,960

6,800

6,800 

6,790

6,840

6,750

6,700

6,870

6,890

6,870

6,740

6,570

6,300

5,870

164,186

5,473

325,700

May

5,440

5,250

5,560

5,820

5,900

5,940

5,870

5,390

5,390

5,360

5,430

5,670

5,820

5,870

6,040

6,090

5,990

6,190

7.170 

7,060

*6,940

5,560

5,150

6,570

6,380

6,090

5,560

4,960

4,670

4,450

4,370

177,950

5,740

353,000

June

4,250

4,240

4,280

4,200

4,990

5,670

5,800

6,040

6,210

6,190

4,930

3,560

3,370

2,640

2,150

2,130

1,980

1,460

952 

»685

497

350

217

182

143

131

T99

196

203

251

78,096

2,603

154,900

July

306

315

302

328

360

310

290

*324

355

332

319

302

302

294

341

337

332

395

438 

390

422

433" 450

406

385

375

337

310

302

24_3

10,621

343

21,070

Aug.

236

262

251

247

258

*210

221

239

228

221

214

236

258

255

251

262

274

282

315 

294

306

328

324

328

328

400

411

422

479

485

491

9,316

301

18,480

Sept.

497

503

497

485

*428

411

450

455

444

497

515

541

548

560 522"

485

461

444

497 

534

541

548

497

467

467

467

467

422

395

435

14,495

483

28,750

Calendar year 1956: Max 6,920 Min 239 Mean 2,192 Ac-ft 1,591,000

Water year 1956-57: Max 7,170 Min 131 Mean 1,948 Ac-ft 1,410,000

* Discharge measurement made on this day.
158 MALHEUR RIVER BASIN

Malheur River near Drewsey, Oreg.

Location. Lat 43°47', long 118 0 20', in SEiJ- sec. 31, T. 20 S., R. 36 E., on left bank 

300 ft downstream from crossing of Burns-Ontario highway, half a mile downstream from 

Cottonwood Creek, and 3 miles southeast of Drewsey.

Drainage area. 910 sq mi. approximately.

Records available. June 1920 to September 1921, November, December 1921, March, April 

1922, April to September 1923, June 1926 to September 1957. Monthly discharge only for 

some periods, published in WSP 1317. March to September 1914 at site 13 miles upstrean? 

records not equivalent owing to Inflow from several creeks.

Gage. Water-stage recorder. Datum of gage is 3,479.13 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. Prior to Apr. 27, 1923, water-stage recorder 

or staff gage at site half a mile downstream at different datum. Apr. 27, 1923, to 

June 6, 1939, water-stage recorder at site 7 miles downstream at different datum.

Average discharge. 31 years (1926-57), 172 cfs (124,500 acre-ft per year).

Extremes. Maximum discharge during year, 10,700 cfs Feb. 24 (gage height, 13.20 ft), 

from rating curve extended above 3,500 cfs on basis of contracted-opening determination of peak flow; minimum, 1.8 cfs Aug. 10 (gage height, 2.53 ft).

1920-23, 1926-57: Maximum discharge, that of Feb. 24, 1957; no flow at times. 

Revisions. The maximum discharge for the water year 1952 has been revised to 

9,030 cfs Mar. 25, 1952 (gage height, 12.90 ft), superseding figure published in 

WSP 1247.

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

for Irrigation of about 13,000 acres above station.

Revisions (water years). WSP 1093: 1927. WSP 1287: Drainage area. WSP 1397: 1921, 

1927-31, 1937, drainage area (former site). Revised figures of discharge, in cubic 

feet per second, for high-water period in water year 1952, superseding those published 

In WSP 1247, are given herewith:

1952 

Mar. 25................. 3.98O

26................. 4,890

Month

March 1952 ................................

Water year 1951 -52 ......................

Calendar year 1952 ......................

Cfs -days

-

Maximum

4,890

4,890

Minimum

80

4.2

4.2

Mean

899

378

370

Runoff In 

acre-feet

55,260

274,400

268,800

Revised peak discharge.--1952: 

4,390 cfs (11.61 ft).

Mar. 25 (10:3O p.m.) 9,030 cfs (12.90 ft); Apr. 6 (10 a.m.)

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

12

TT

29

36

20

19

19

19 

23

25

37

81

67

56

55

50

48

46

*45

46

45

44

42

45 

47

67

85

84

70

241

234

1,754

56.6

3,480

Nov.

115

86

88

103

114

109.

112

98

91

90

88

85

84

85

74

72

86

96

74

59

67

67

66

67 

70

64

62

60

58

55

2,455

81.8

4,870

Dec.

55

60

65

*70

65

60

55

51 

46

5T

103

248" 322

185

131

115

1O5

100

96

81

75

70

74

80

75

60

56

50

48

51

55

2,763

89.1

5,480

Jan.

60

60

58

55

50

49

50

55

50

55

60

60

65

65

55

50

45

50

60

63

65

*60

60

58 

55

50

45

40

Iff

50

60

1,693

54.6

3,360

Feb.

6O

58

55

6ff

70

68

80

9O 

100

100

100

110

143

209

322

385

318

183

124

107

100

116

2,470

*5,510 

3,920

3,890

3,470

1,670

23,688

846

46,980

Calendar year 1956 : Max 2,160 Mln 6.4

Mar.

1,070

826

681

60O

*1,030

866

*1,020

1.120

1,070

806

*611

866

664

502

496

614

555

514

632

650

541

424

368

365

46TJ

541

475

445

478

600

706

20,596

664

40,850

Apr.

822

642

604

618

681

906

894

770 

*774

810

850

898

1,100

992

1,190

*1,030

938

878

818

814

798

774

7O9

674 

618

562

530

527

354

562

23,317

777

46,250

May

590

604

618

611

656

688

594

604

750

702

688

681

625

618

586

511

445

457

758

£22

511

448

403

370 

332

305

*280

'S5ff

282

292

288

16,199

523

32,130

June

285

288

33B~ 318

268

245

243

243 

235

*201

167

136

122

111

111

1O9

101

88

80

104

70

46

43

41 

33

32

29

25

23

11

4,123

137

8,180

July

18

TT

15

12

10

10

9.0

tt> 

9.0

10

13

*14

14

14

13

13

14

13

12

12

12

13

14

14 

14

14

14

15

17

17

16

411.0

13.3

815

Aug.

15

14

12

13

8.4

3.0

2.8

2.2

*2.0

2TTT

2.2

2.4

2.6

3.2

4.0

4.0

4.3

4.6

*4.9

5.7

5.7

5.7

5.7

5.3 

4.6

4.0

4.0

4.0

4.3

4 .6

4.9

165.1

5.33

327

Sept.

5.3

5.3

5.7

6.5

6.5

6.9

6.9

6.5 

6.1

6.5

6.5

6.5

6.5

6.1

5.7

5.3

4.9

479

5.3

5.7

6.1

6.1

6.5

6.9

7.7

9.5

10

10

11

.=£

209.4

6.98

415

Mean 278 Ac-ft 201,800

Water year 1956-57 1956-57 : Max 5,310 Mln 2.0 Mean 267 Ac-fte 193,100 195,10_________________

Peak discharge (base, 800 cfs). Feb. 24 (11 p.m.) 10,700 cfs (13.20 ft); Mar. 5 (11 a.m.) 1,24O cfs 

(7.36 ft); Mar. 12 (11 a.m.) 1,080 cfs (7.04 ft); Apr. 1 (1 a.m.) 858 cfs (6.52 ft); Apr. 6 

(8 p.m.) 1,110 cfa (7.10 ft); Apr. 15 (5 p.m.) 1,290 cfs (7.46 ft); May 19 (3:30 a.m.) 838 cfs 

(6.47ft). ______________________________________

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 27 to Dec. 3, Dec. 5-7, 21, 22, 24-26, Dec. 31 

to Jan. 4, Jan. 8-19, Jan. 22 to Feb. 12.
MALHEUR RIVER BASIN 159

Malheur River below Warmsprings Reservoir, near Riverside, Oreg.

Location. Lat 43°34', long 118"12' , in SW^ sec. 17, T. 23 S., R. 37 E., on left bank 

1 mile downstream from Warmsprings Dam, 3 miles upstream from South Pork, and 4 miles 

northwest of Riverside.

Drainage area. 1,100 sq mi, approximately.

Records available. January 1906 to March 1907 and December 1908 (gage heights only), 

January 1909 to September 1910, December 1914 to July 1917, March 1919 to September 

1957. Monthly discharge only for some periods, published in WSP 1317. Figures of discharge for January 1906 to March 1907, published in WSP 272 and 370, have been found to 

be unreliable and should not be used. Published as Middle Pork of Malheur River at 

Riverside, 1906-7, as Middle Pork of Malheur River above South Pork, at Riverside, 

1909-10, as Malheur River above South Pork, at Riverside, in WSP 370, 1906-10, and as 

Malheur River at Warm Springs reservoir site, near Riverside, 1914-17.

Gage. Water-stage recorder and concrete control. Altitude of gage is 3,305 ft (by barometer). Jan. 3, 1906, to May 25, 1910, staff or chain gages at several sites about 

3 miles downstream, 200 ft upstream from South Pork, at various datums. Dec. 9, 1914, 

to July 34, 1917, water-stage recorder and Mar. 18, 1919, to Apr. 27, 1920, staff gage, 

at sites about 1 mile upstream at different datums. Apr. 28, 1920, to Sept. 28, 1949, 

staff or hook gages at sites within 80 ft of present site and at present datum.

Average discharge.--38 years (1919-57), 165 cfs (119,500 acre-ft per year).

Extremes. Maximum discharge during year, 1,280 cfs Apr. 14 (gage height, 6.38 ft); minimum daily, 0.1 cfs Oct. 13 to Dec. 31.

1909-10, 1915-17, 1919-57: Maximum discharge observed, 7,200 cfs Mar. 1, 1910 

(gage height, 10.7 ft, site and datum then in use), from rating curve extended above 

820 cfs by logarithmic plotting; no flow at times.

Remarks Records good above 10 cfs and poor below. Plow completely regulated since 

November 1919 by Warmsprings Reservoir (see p. 164). Diversions for irrigation of 

13,000 acres above station.

Re vis ions (water years). WSP 833: 1936. WSP 1063: 1942-45. WSP 1397: 1909-10, 1917. 

WSP 1447:I9"55~:See also Records available.

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

2.5

2.7

2.8 

3.0 

3.2 

3.4

3.7 

4.0

4.5 

5.0 

6.5

74

143

340

590

1,340

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

112

T51T

99

92

88

80

80

80

80

82

82

32

(**)

> .1

1,016.9

32.8

2,020

Nov.

> 0.1

3.0

0.1

6.0

Dec.

> 0.1

3.1

0.1

6.1

Jan.

(**)

> 0.2

6.2

0.2

12

Feb.

> 0.5

20

33.5

1.20

66

Mar.

34

5

4

2

?

2

2

3

3

4

6

9

12

15

20

31 

43

47

54

100

230

300

313

313

322

370

400

405

405

430

505

4,391

142

8,710

Apr.

625

670

635

605

615

710

850

860

*820

805

840

875

970

1,130

1,220

1,250 

1,160

1,090

1,000

950

940

900

850

790

705

640

595

560

530

§2,5

24,695

823

48,980

May

530

550

585

615

635

675

665

635

665

720

750

770

720

680

630

590 

530

505

570

645

620

550

485

435

400

370

340

318

SOB

390

460

17,341

559

34,400

June

490

510

495

485

515

555

575

585

*585

575

565

520

495

490

 480

480

480

485

490

485

490

515

515

530

565

610

'SIB" 635

600

600

16,015

534

31,770

July

610

615

6135"

615

615

590

580

575

585

585

*585

580

565

565

565

550 

540

535

535

500

465

450

450

450

435

425

405

400

395

390

390

16,150

521

32,030

Aug.

390

390

390

390

390

390

390

390

*390

390

385

385

380

375

570

380 

390

390

390

390

385

410

420

420

420

±!£

^S

410

410

405

400

12,270

396

24,340

Sept.

400

375

375

375

375

375

370

370

370

370

370

365

350

340

326

322

318

300

277

268

259

254

250

238

218

188

170

167

1ST

170

9,072

302

17,990

Calendar year 1956 : Max 645 Mln - Mean 174 Ac-ft 126,000

Water year 1956-57 : Max 1,230 Mln - Mean 277 Ac-ft 200,300

* Discharge measurement made on this day.

** Field estimate made on this day.

Note. Ho gage-height record Oct. 13 to Feb. 27j discharge estimated on basis of field estimates.
160 MALHEUR RIVER BASIN

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

Location. Lat 43°58" , long 118°11' , in sec. 33, T. 18 S., R. 37 E., on left bank 3 miles 

upstream from Warm Springs Creek, 4 miles upstream from Agency Valley Dam, and 4 miles 

northwest of Beulah.

Drainage area. 355 sq mi.

Records available. January to September 1914, June 1936 to September 1957. Published 

as "at Scott's Ranch, near Beulah" in 1914.

Gage. Water-stage recorder. Altitude of gage is 3,350 ft (by barometer). Jan. 1 to 

£5ept. 30, 1914, staff gage at same site at different datum.

Average discharge.--21 years (1936-57), 127 cfs (91,940 acre-ft per year).

Extremes. Maximum discharge during year, 1,600 cfs Feb. 24 (gage height, 3.50 ft), from 

rating curve extended above 620 cfs by logarithmic plotting; minimum, 28 cfs Nov. 1.

1914, 1936-57: Maximum discharge, that of Feb. 24, 1957; maximum gage height, 

4.60 ft Mar. 26, 1940; minimum discharge determined, 12 cfs Jan. 27, 1948.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation of about 900 acres, of which about 50 acres 

are below station.

Revisions (water years).--WSP 883: 1938(M). WSP 1093: 1944(m). WSP 1397: 1914, 1937, 

1941-42, 1944, 1950.

Rating tables, water year 1956-57, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Feb. 24 Feb. 25 to Sept. 30

-0.2 

0.0

.5 

1.0

90

147

275

1.5 435

2.0 650

3.0 1,240

3.5 1,600

0.1

.5

1.0

78

180

1.5 

2.0 

3.0

325

530

1,130

Discharge,, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

52

52

52

52

52

50

50

52

52

59

69

79

70

62

59

59

58

59

*59

58

56

55

53

49

59

66

72

52

48

~KO 103 

oy

1,837

59.3

3,640

Nov.

le- 40

ss

61

56

64

61

59

59

59

61

62

64

59

48

72

79

72

55

60

62

65

65

66

64

60

60

58

55

55

1,802

60.1

3,570

Dec.

55

60

65

*66

53

50

45

45

50

61

150

~97 158

85

69

69

61

56

52

49

45

42

50

52

55

50

46

45

45

50

55

1,931

62.3

3,830

Calendar year 1956: Max 8C

Jan.

58

60

55

50

50

50

50

52

50

50

55

6O

60

58

55

50

45

45

50

55

60

*60

58

55

50

45

40

35

35

40

45

1,581

51.0

3,140

Feb.

50

48

45

50

60

60

60

70

90

90

90

100

120

150

200

250

200

150

100

90

80

100

200

1,400

1,200

1,200

800

400

7,453

266

14,780

Mar.

288

208

168

200

294

288

388

565

4l6

266

210

251

160

132

168

172

145

165

188

195

170

131

114

136

198

190

165

168

210

260

325

6,934

224

13,750

Apr.

275

236

245

248

314

368

297

297

318

353

356

424

400

416

416

*384

376

360

360

346

350

339

332

318

287

266

260

266

297

336

9,840

328

19,520

May

360

396

392

384

400

380

353

388

428

416

412

412

408

408

380

342

332

400

456

416

368

332

300

278

257

242

248

*257

275

272

266

10,958

353

21,730

June

275

294

281

266

248

239

225

233

208

*188

172

158

148

141

143

131

120

108

103

110

108

96

86

83

81

80

80

75

71

68

4,619

154

9,160

July

67

64

63

60

59

56

56

54

53

51

50

49

49

49

46

46

44

43

42

40

39

40

40

39

.36

37

38

37

38

39 

39

1,463

47.2

2,900

Aug.

4O

40

40

41

41

39

40

43

*44

44

44

44

43

43

43

42

41

40

39

*40

40

41

42

42

42

42

42

45

46 

48

52

1,313

42.4

2,600

Sept.

49

45

44

43

43

43

42

40

39

39

39

38

38

37

37

36

35

35

37

36

36

35

35

36

36

36

38

39

41

44

1,171

39.0

2,320

)6 Mln 35 Mean 155 Ac-ft 112,700

Water year 1956-57: Max 1,400 Mln 35 Mean 139 Ac-ft 100,900

Peak discharge (base, 500 cfs).--Feb. 24 (time unknown) 1,600 cfs (3.50 ft); Mar. 7 ( 10 p.m.) 

758 cfs (2.43 ft); May 18 (8 p.m.) 560 cfs (2.06 ft).
MALHEUR RIVER BASIN 161

North Fork Malheur River at Beulah, Oreg.

Location. La t 43°54' , long 118°09', in NW^NE^ sec. 22, T. 19 S., R. 37 E. , on left bank 

at Beulah, a quarter of a mile downstream from Agency Valley Dam and 12 miles northwest of Juntura.

Drainage area. 440 sq mi, approximately.

Records available.--June 1926 to September 1957. Published as "near Beulah" June 1926 to 

September 1935.

Gage. Water-stage recorder. Datum of gage is 3,262.20 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. June 26, 1926, to Apr. 24, 1936, water-stage 

recorder at site 1 mile downstream at different datum. Apr. 25, 1936, to Sept. 30, 

1949, staff gage at site 20 ft downstream at present datum.

Average discharge.--22 years (1935-57), 134 cfs (97,010 acre-ft per year).

Extremes. Maximum discharge during year, 464 cfs May 5 (gage height, 2.58 ft); no flow 

Oct. 13 to Nov. 30.

1926-57: Maximum discharge, 7,000 cfs May 7, 1942 (gage height, 8.4 ft, from floodmark) , from computation of peak flow over dam, caused by failure of gates at Agency 

Valley Dam; no flow at times.

Remarks. Records good except those below 10 cfs, which are poor. Flow regulated by 

Agency Valley Reservoir since December 1935 (see p. 164). Diversions for irrigation 

of about 3,000 acres above station. Prior to Apr. 25, 1936, station was below intake 

of diversions for irrigation of about 120 acres below station.

Revisions (water years).--WSP 1397: 1927-32, 1934, drainage area.

Rating table, water year 1956-57 (gage height, In feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Apr. 15 to June 3)

-0.1 

0.0 

.1 

.2 

.3 

.5

2.0 

5.0

25

0.7 

1.0 

1.5 

2.0 

3.0

82

170

280

560

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

146

128

123

122

120

120

118

118

116

115

115

41

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

1,382

44.6

2,740

Nov.

0

0

0

Dec.

0.1

.1

**.

.1

.1

.1

.1

.1

.1

3.1

0.10

6.1

Jan.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

.5

.5

.5

.5

9.8

0.32

19

Feb.

~7s 0.5

.5

.6

.6

.6

.6

.6

.7

.7

.7

.7

.8

.8

.8

.8

.8

.9

.9

.9

.9

1.0

1.0

1.0

1.0

1.5

4.0

4.5

28.7

1.02

57

Mar.

.3

.7

.3

.3

** .3

5.0

6.0

7.0

8.0

8.0

8.5

9.0

9.0

9.0

9.0

9.0

9.5

9.0

8.5

8.5

7.5

8.5

10

11

125

196

198

T96

196

196

196

1,484.9

47.9

2,950

Apr.

230

268

270

270

270

312

345

348

*355

355

355

355

378

422

437

*446

446

443

410

370

360

362

362

345

315

308

285

278

280

292

10,272

342

20,370

May

320

335

362

395

449

458

452

425

422

422

422

422

413

407

401

375

368

370

392

401

419

419

404

372

342

310

278

*282

285

288

302

11,712

378

23,230

June

312

315

330

345

362

368

335

320

300

*290

290

295

295

292

282

280

280

298

298

295

295

290

305

315

315

315

315

315

315

315

9,277

309

18,400

July

315

315

312

310

310

308

308

308

305

305

305

*302

300

300

300

335

355

362

365

36T

342

348

360

360

360

358

358

358

355

355

355

10,291

332

20,410

Aug.

352

352

352

358

562

360

355

555

*555

555

352

350

550

550

348

348

545

545

342

*340

358

335

332

330

330

328

330

348

522

502

282

10,605

542

21,050

Sept.

262

258

258

255

258

216

206

206

200

194

206

180

166

166

166

166

164

164

162

162

160

152

134

122

122

122

122

120

T20

*120

5,289

176

10,490

Calendar year 1956: Max 668 Min 0 Mean 158 Ac-ft 114,800

Water year 1956-57: Max 458 Mln 0 Mean 165 Ac-ft 119,700

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.

Note.--No gage-height record Oct. 13 to Feb. 25; discharge estimated on basis of 1 observation of 

no flow, 1 field estimate, weather records, and records for Agency Valley Reservoir.
162 MALHEUR RIVER BASIN

Malheur River at Little Valley, near Hope, Oreg.

Location.--Lat 43°54" , long 117°30' , in SE^- sec. 24, T. 19 S., R. 42 E., on right bank 

500 ft downstream from bridge at Little Valley, 8 miles southwest of Hope, and 14 miles 

southwest of Vale.

Drainage area. 3,010 sq mi, approximately. 

Records available. April 1949 to September 1957.

Gage. Water-stage recorder. Datum of gage is 2,424.13 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947.

Average discharge. 8 years, 208 cfs (150,600 acre-ft per year).

Extremes.--Maximum discharge during year, 12,300 cfs Feb. 24 (gage height, 11.5 ft, from 

floodmark), from rating curve extended above 1,700 cfs on basis of slope-area determination of peak flow; minimum, 28 cfs Jan. 2 (gage height, 1.67 ft).

1949-57: Maximum discharge, that of Feb. 24, 1957; minimum, 12 cfs Oct. 27, 1955.

The two greatest floods known occurred in March 1894 and March 1910, on basis of 

records for former station near Namorf.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Flow regulated by Warmsprings and Agency Valley Reservoirs (see 

p. 164). Vale-Oregon Canal diverts as much as 600 cfs on left bank at Namorf in 

sec. 31, T. 20 S., R. 41 E., for irrigation of about 31,000 acres, largely below the 

station. Many small diversions for irrigation above station.

Revisions (water years).--WSP 1217: 1949-50(M). WSP 1397: 1950.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

Oct. 1 to Feb. 24 Feb. 25 to Sept. 30

1.7 

2.0 

2.2 

2.5 

3.0 

3.5

112

185

375

620

4.0 940

5.0 1,800

6.0 2,910

7.0 4,210

9.0 7,390

2.1 

2.3 

2.5

85

129

181

3.0 

3.5

370

620

Note. Same as preceding 

table above 3.5 ft.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

83

81

79

76

72

69

64

61

60

60

74

98

148

130

96

66

63

*61

54

52

50

48

*48

47

*!

58

90

88

81

92

139

2,333

75.3

4,630

Nov.

136

114

106

96

92

90

88

87

79

78

74

72

72

69

68

66

66

64

63

61

58

57

55

54

52

51

48

48

52

48

2,164

72.1

4,290

Dec.

50

51

*48

50

45

42

40

38

35

48

60

104

96

98

90

83

78

72

69

68

64

58

52

54

50

48

45

42

40

40

42

1,800

58.1

3,570

Jan.

42

42

42

41

40

40

40

40

40

40

40

42

45

47

45

40

35

38

40

42

*40

40

38

36

35

34

32

30

35

40

45

1,226

39.5

Feb.

45

44

42

40

40

45

50

55

60

50

55

60

80

100

150

200

150

120

110

100

90

150

1,000

*6,000

5,000

5,000

4,000

2,000

24,836

887

Mar.

1,500

900

600

*604

993

1,190

1,400

1,220

*898

674

515

795

1,210

758

598

674

776

592

560

545

555

614

604

582

576

704

849

842

863

905

968

25,064

809

2, 430| 49,260| 49,710

Apr.

1,060

1,170

1,150

1,070

1,040

*1,070

1,220

1,320

1,230

1,210

1,200

1,230

1,300

1,450

*1.560

1,520

1,530

1,480

1,430

1,320

1,290

1,300

1,210

1,120

968

870

734

644

545

510

34,751

1,158

68,930

May

425

366

510

858

982

814

782

746

740

752

984

1,630

1,150

1,090

982

926

1,020

968

1,200

1,340

1,030

947

849

758

644

555

*460

343

257

238

285

24,631

795

48,850

June

330

313

281

265

249

261

313

325

338

321

*293

309

297

269

265

245

242

242

265

242

231

220

231

242

217

253

301

313

305

293

8,271

276

16,410

July

297

297

301

305

309

309

297

285

273

285

*293

297

297

281

289

281

265

285

309

325

301

269

257

249

245

242

238

238

231

214

204

8,568

276

16,990

Aug.

214

207

190

184

187

196

193

*193

196

193

196

193

196

190

184

184

184

178

181

176

173

170

184

184

181

181

165

162

184

184 196 :

5,779

186

11,460

Sept.

193

181

159

159

154

149

146

144

144

136

136

139

134

132

127

124

124

127

124

124

118

113

115

111

108

104

96

89

89

*91

3,890

130

7,720

Calendar year 1956: Max 1,900 Min 35 Mean 196 Ac-ft 142,500

Water year 1956-57: Max 6,000 Min 30 Mean 393 Ac-ft 284,200

* Discharge measurement made on this day.

Mote. No gage-height record Jan. 29 to Mar. 3; discharge estimated on basis of weather records, 

slope-area determination of peak flow, and records for Malheur River near Drewsey. Stage-discharge 

relation affected by ice Dec. 6-1O, Dec. 25 to Jan. 3, Jan. 5-13, 15-28.
MALHEUR RIVER BASIN 163

Bully Creek near Vale, Oreg.

Location. Lat 43°57'30", long 117°20'30", in SW£ sec. 33, T. 18 S., R. 44 E., on right 

bank 5 miles southwest of Vale and 7 miles upstream from mouth.

Drainage area. 570 sq mi, approximately.

Records available. May 1933 to September 1934, November 1934, March 1935, March, April 

19J36, June 1937 to September 1957. Monthly discharge only for some periods, published 

in WSP 1317.

Gage. Water-stage recorder and concrete control. Altitude of gage is 2,313 ft (by levels 

to reference point furnished by Union Pacific Railroad). Prior to Mar. 15, 1937, 

water-stage recorder or staff gage at site 2 miles upstream at different datum. 

Mar. 15, 1937, to Jan. 1, 1940, water-stage recorder at present site at datum 0.38 ft 

higher.

Average discharge.--21 years (1933-34, 1937-57), 41.7 cfs (30,190 acre-ft per year).

Extremes.--Maximum discharge during year, 8,980 cfs Feb. 24 (gage height, 10.5 ft, from 

floodmarks), from rating curve extended above 2,600 cfs on basis of slope-area determination of peak flow; minimum, 11 cfs Dec. 22, Jan. 2 (gage height, 0.71 ft).

1933-34, 1937-57: Maximum discharge, that of Feb. 24, 1957; no flow at times.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Occasional fluctuations caused by releases from Vale-Oregon Canal 

which diverts water for irrigation of lands west of Vale; considerable return flow at 

times enters Bully Creek above station. Diversions above station for irrigation of 

about 7,000 acres.

Revisions (water years).--WSP 1183: 1946-47. WSP 1397: 1948. WSP 1447: Drainage area.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Feb. 24 Feb. 25 to Sept. 30

1.0 

1.2

1.5 

2.0

11

15

25

38

68

140

2.5 

3.0 

4.0 

- 5.0 

6.0 

7.0

250

395

810

1,420

2,250

3,300

0.8 

1.0 

1.2 

1.6 

2.0

13

24

42

98

190

2.5 

3.0 

4.0 

5.0 

6.0

370

570

1,090

1,790

2,650

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

20

19

19

20

19

17

18

18

19

19

34

a35

a28

a23

a 20

a!8

a!8

*18

18

17

17

*17

17

16

18

42

46

21

23

48

208

890

28.7

1,770

Nov.

~ST 120

36

31

29

28

30

32

32

30

30

29

29

27

27

26

26

24

22

23

21

21

21

20

20

20

20

19

b!8

b!8

880

29.3

1,750

Dec.

19

20

*20

20

20

19

19

18

20

21

24

24

23

22

21

20

21

21

20

b!9

b!8

17

b!7

18

18

b!7

b!6

b!6

b!7

b!8

b!9

602

19.4

1,190

Jan.

19

19

19

18

15

17

18

18

b!7

b!5

b!6

b!7

18

18

18

b!6

b!5

16

b!7

17

*17

b!6

b!7

18

b!6

b!5

b!4

b!2

b!3

b!5

b!7

513

16.5

1,020

Feb.

b!7

b!7

b!6

17

17

b!5

b!6

16

b!5

b!6

bl6

b!6

b!7

18

26

44

55

36

29

24

23

21

55

*3,110

»1,870

2,620

1,620

a 700

10,462

374

20,750

Mar.

a400

a300

a350

a450

530

a580

635

594

*546

a400

*264

358

342

250

222

274

295

239

225

222

218

184

163

148

150

155

142

133

133

152

150

9,204

297

18,260

Apr.

160

T35

125

121

121

133

123

*110

105

100

95

108

112

101

*86

80

80

78

80

70

61

64

83

72

54

46

39

34

31

SI

2,634

87.8

5,220

May

27

25

33

43

52

62

52

50

57

54

43

65

62

48

48

67

54

37

114

113

125

ITS

98

98

86

76

*74

68

68

54

30

1,996

64.4

3,960

June

22

23

26

26

26

29

29

35

41

36

*34

33

40

40

50

54

53

54

57

49

43

31

25

21

21

21

21

19

To" 18 

lo

995

33.2

1,970

July

18

17

16

17

16

16

16

 17

16

17

17

17

16

15

T6

18

19

17

17

18

19

19

19

21

21

23

30

29

29

23

19

588

19.0

1,170

Aug.

19

21

22

22

22

23

23

*22

22

21

28

30

35

33

29

26

21

23

23

24

24

25

26

28

28

25

26

28

27

26

24

776

25.0

1,540

Sept.

21

20

19

21

19

20

21

22

22

21

21

21

22

21

21

19

18

17

re

19

18

20

21

21

23

22

21

21

21

*23

614

20.5

1,220

Calendar year 1956: Max 560 Mln 5.0 Mean 46.9 Ac-ft 34,070

Water year 1956-57 : Max 3,110 Mln 12 Mean 82.6 Ac-ft 59,820

Peak discharge (base, 130 of s) .--Oct. 12 (time unknown) 166 cfs (2.21 ft); Oct. 31 (2 a.m.) 344 cfs 

(2.83 ft); Feb. 24 (8 p.m.) 8,980 cfs (10.5 ft); Feb. 26 (10:30 p.m.) 3,780 cfs (7.07 ft); Mar. 7

(9 a.m.) about 700 cfs; Mar. 12 (7 p.m.) 474 cfs (2.76 ft); May 19 (9 to 10 a.m.) 178 cfs

(1.96 ft).

Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of weather records and records for North 

Fork Malheur River above Agency Valley Reservoir, near Beulah and Malheur River near Drewsey. 

b Stage-discharge relation affected by Ice.
164 MALHEUR RIVER BASIN

Reservoirs in Malheur River basin, Oreg.

War-mappings Reservoir. --Lat 43°35', long 118°12', in SEir sec. 8, T. 23 S., R. 37 E., near 

right end of dam on Malheur River, 4 miles upstream from South Pork and 3 miles northwest of Riverside. Drainage area, 1,100 sq mi, approximately. Records available, 

January 1920 to October 1929, December 1929 to September 1957. Wire-weight gage read 

once daily with some exceptions March to September, and about once each week October 

to March. Datum of gage is 3,327 ft above mean sea level (levels by Bureau of Reclamation); gage readings have been reduced to elevations above mean sea level. Maximum 

contents observed during year, 194,900 acre-ft Apr. 13, 16 (elevation, 3,406.84 ft); 

minimum observed, 75,790 acre-ft Sept. 30 (elevation, 3,375.32 ft). Maximum contents 

observed during period 1920-57, 196,000 acre-ft Apr. 7, 1942 (elevation, 3,407.08 ft); 

no contents Sept. 18 to Nov. 1, 1929, Aug. 26 to sometime in November 1935, Sept. 18 

to Oct. 11, 1950.

Reservoir is formed by concrete-arch dam; capacity, 191,000 acre-ft between elevations 3,327 (bottom of outlet tunnel) and 3,406 ft (top of flashboards). Dead 

storage, 1,400 acre-ft below elevation 3,327 ft, not included in records. Storage 

began in 1919. Water used to irrigate lands on both sides of river between Namorf and 

Ontario. Data for computing capacity table furnished by Bureau of Reclamation.

Agency Valley Reservoir.--Lat 43°55', long 118°09i, in SEi sec. 15, T. 19 S., R. 37 E., 

in control house at dam on North Pork Malheur River, a quarter of a mile northwest of 

Beulah. Drainage area, 440 sq mi, approximately. Records available, December 1935 to 

September 1957. Pressure gage with mercury column read once daily. Datum of gage is 

at mean sea level (levels by Bureau of Reclamation); add 7.49 ft to obtain mean sea 

level elevation, datum of 1929, supplementary adjustment of 1947.

Maximum contents observed during year, 60,580 acre-ft May 21 (elevation, 3,340.35 

ft); minimum observed, 7,410 acre-ft Sept. 30 (elevation, 3,297.45 ft). Maximum contents observed during period 1935-57, 62,770 acre-ft May 3, 1941 (elevation, 3,341.50 

ft); no contents Sept. 17 to Oct. 13, 1950, Aug. 28 to Oct. 4, 1955.

Reservoir is formed by earth-fill, rock-faced dam. Storage began in December 1935. 

Capacity, 59,920 acre-ft between elevations 3,263.21 (bottom of outlet tunnel) and 

3,340 ft (top of spillway gates); with gates open the capacity is 32,220 acre-ft. No 

dead storage. Water is used for irrigation of lands below Juntura, on Vale project of 

Bureau of Reclamation. Capacity table furnished by Bureau of Reclamation.

Revisions. WSP 1397: Drainage area.

Other reservoirs. There are several other reservoirs in the Malheur River basin, all 

with less than 3,500 acre-ft capacity except Willow Creek No. 3 Reservoir near Malheur, 

which has a capacity of 49,000 acre-ft.

Month-end elevation and contents, water year October 1956 to September 1957

Date

Calendar year 1956 . . .

AUK 31

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

Water year 1956-57...

Elevation 

(feet)

Contents 

(acrefeet)

Change In 

contents 

(acre-feet)

Warmsprlngs Reservoir

3,379.30

-

3,383.95 

3,398.38

3,406.31 

3,406.00

3,390.30 

3,382.09 

3,375.32

-

a87,300 

88,260 

a93,660 

a99,900

-

103,400 

157,400 

a!93,200 

192,400 

191,000 

a!63,loo 

125,500 

97,300 

75,790

-

+ 960 

+5,400 

+6,240

+77,620

+3,500 

+54,000 

+35,800 

-8OO 

-1,400 

-27,900 

-37,600 

-28,20O 

-21,510

-11,510

Elevation 

(feet)

Contents 

(acrefeet)

Change In 

contents 

(acre-feet)

Agency Valley Reservoir

3,303.93 

3,304.90 

3,309.30 

3,313.45

-

3,316.40 

3,329.40 

3,339.35 

3,340.07 

3,340.08 

3,335.40 

3,324.23 

3,308.05 

3,297.45

-

11,690 

12,440 

16,260 

20,510

-

23,860 

41,600 

58,700 

60,050 

60,070 

51,520 

33,930 

15,080 

7,410

-

+750 

+3,820 

+4,250

+7,870

+3,350 

+17,740 

+17,100 

+1,350 

+20 

-8,550 

-17,590 

-18,850 

-7,670

-4,280

a No gage-height record; contents Interpolated.
PAYETTE RIVER BASIN 165

South Fork Payette River at Lowman, Idaho

Location. Lat 44°05'00", long 115"37"30", in SW^ sec. 27, T. 9 N., R. 7 E., on right 

bank 1,200 ft upstream from Rock Creek, half a mile northwest of Lowman, and 4,100 ft 

downstream from Clear Creek.

Drainage area. 456 sq mi.

Records available.--May 1941 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 3,790 ft (from river-profile map). 

"Prior to Dec. 18, 1941, staff gage at site 900 ft upstream at different datum.

Average discharge. 16 years, 902 cfs (653,000 acre-ft per year).

Extremes. Maximum discharge during year, 5,840 cfs June 5 (gage height, 6.78 ft); minimum daily, 220 cfs Jan. 18; minimum gage height, 2.60 ft Dec. 22.

1941-57: Maximum discharge, 7,050 cfs May 24, 1956 (gage height, 7.45 ft); minimum, 148 cfs Dec. 9, 1944 (gage height, 2.40 ft).

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

good7 , and those for periods of ice effect, which are fair. No regulation. Several 

small diversions for irrigation and placer mining, the return flow from which enters 

river above station.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.6 

2.8 

3.0

255

324

413

3.5 

4.0 

4.5

726

1,180

1,760

5.0 

6.0 

6.8

2,420

4,120

5,890

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsra

In.

Ac-ft

Oct.

390 

385

380

375

*375

366 36~6

371

371

394

456

451

408

394

385

375

371

380

404

375

375

371

380

385

380

418

462

408

385

440

435

12,211

394

0.864

1.00

24,220

Nov.

404 

390

385

390

385

404

408

394

394

404

413

413

*424

385

349

418

451

4T3

324

33?

366

390

380

380

370

370

380

375

380

385

11,656

389

0.853

0.95

23,120

Dec .

375 

380

404

380

353

341

332

281

337

375

413

*413

451

1ST

390

380

358

358

349

306

345

284

366

366

313

302

317

328

332

341

353

11,047

356

0.781

0.90

21,910

Jan.

330 

340

317

280

270

277

328

350" 390

330

330

370

360

320

310

290

240

220

240

330

320

310

300

280

260

250

240

230

240

270

290

9,242

298

0.654

0.75

18,330

Feb.

310 

310

300

*300

290

280

280

290

280

270

270

270

270

280

300

306

306

306

313

317

309

317

349

456

545

564

576

526

-

9,490

339

0.743

0.77

18,820

Mar.

a480 

a450

a420

a410

a410

a390

a390

a 400

a440

a470

a 440

a470

*408

390

399

394

399

390

413

440

456

429

413

408

413

404

399

408

440

467

508

13,148

424

0.930

1.07

26,080

Apr.

496 

485

502

514

596

726

676

662

690

780

803

853

837

906

1,000

971

952

867

879

896

915

*952

1,120

1,150

1,000

896

862

1,000

1,390

V.690

26,086

870

1.91

2.13

51,740

May

1,810 

2,110

2,250

1,980

1,920

2,280

2,700

2,880

2,990

3,040

2,910

3,120

3,300

3,300

3,020

3,140

3,240

3,540

4,060

3,560

*2,960

2,600

2,350

2,280

2,340

2,520

2,850

3,190

3,580

3,970

4,160

89,950

2,902

6.36

7.34

178,400

June

4,360 

4,660

5,130

5,500

5,660

5,540

4,860

4,470

4,060

3,540

3,350

*3,260

3,090

2,740

2,440

2,170

1,980

1,940

2,060

2,270

2,240

2,090

2,020

2,100

2,150

2,040

2,000

2,180

2,130

2,110

94,140

3,138

6.88

7.68

186,700

July

2,060 

*1,970

1,810

1,680

1,540

1,500

1,470

1,380

1,320

1,290

1,240

1,210

1,180

1,120

1,070

1,000

952

906

870

845

820

795

780

757

734

719

698

690

676

662 

648

34,392

1,109

2.43

2.80

68,220

Aug.

629 

609

609

596

576

564

558

a550

a540

a530

520

514

502

*496

485

479

473

467

462

456

451

445

445

440

435

429

424

a425

a430

a440 

a460

15,439

498

1.09

1.26

30,620

Sepi-.

a450 

a440

a430

a420

a410

a 400

a390

a390

385

380

*380

371

371

366

362

358

358

362

a390

a380

371

366

362

353

349

349

345

345

341 

341

11,315

377

0.827

0.92

22,440

Calendar year 1956: Max 6,840 Min 281 Mean 1,193 Cfsm 2.61 In. 35.60 Ac-ft 865,300

Water year 1956-57: Max 5,660 Min 220 Mean 926 Cfsra 2.03 In. 27.57 Ac-ft 670,600

* Discharge ischarge measurement measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range in 

nd records for station near Garden Valley and for Boise River near Twin Springs.

Note . --Stage-discharge relation affected by ice Nov. 23-26, Dec. 2, 4, Jan. 1, 2, 4, 5, Jan. 

eb. 15.
166 PAYETTE RIVER BASIN

Deadwood Reservoir near Lowman, Idaho

Location. La t 44°18', long 115°39', in SE^ sec. 8, T. 11 N., R. 7 E., at dam on Deadwood 

River, 15 miles north of Lowman.

Drainage area. 108 sq mi.

Records available. October 1935 to September 1957.

Gage.--Staff gage on face of dam read once daily. Datum of gage is at mean sea level 

"(levels by Bureau of Reclamation). Datum of Geological Survey levels (1952, preliminary) is 22.8 ft higher.

Extremes.--Maximum elevation observed during year, 5,336.21 ft June 11; minimum observed, 

5,284.82 ft Oct. 1.

1935-57: Maximum elevation observed, 5,337.1 ft June 1,2, 1943; minimum observed, 

5,205.0 ft Sept. 18 to Oct. 11, 1951, when reservoir was drained for repairs.

Remarks. Reservoir is formed by concrete-arch dam, completed in 1930; storage began 

 Nov. 2, 1930. Reported capacity, 160,400 acre-ft between elevations 5,230.0 ft (minimum operating level because of fish protection, 27 ft above sill of emergency gate in 

front of needle valve) and 5,334.0 ft (crest of spillway). Storage below elevation 

5,230 ft, about 1,500 acre-ft. Water is used to augment flow of Payette River at 

Black Canyon powerplant near Emmett and, since 1956, as supplemental irrigation supply 

for Emmett Irrigation district and other users. Small diversion from a tributary of 

Johnson Creek in Salmon River basin to Deadwood River basin for supplemental storage 

in Deadwood Reservoir. Discharge of 1.36 cfs was measured in this canal Aug. 20.

Cooperation. Gage readings furnished by Bureau of Reclamation.

Elevation, in feet, water year October 1956 to September 1957

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.

284.82

284. SS

285.00

285.10

285.18

285.27

285.36

285.42

285.53

285.64

285.80

285.98

286.10

286.20

286.30

286.43

286.48

286.57

285.76

286.83

286.90

287.02

287.13

287.27

287.38

287.57

287.68

287.79

287.96

288.15

288.25

Nov.

288.38

288.56

288.62

288.74

288.92

288.96

289.06

289.14

289.25

289.38

289.43

289.50

289.62

289.73

289.77

289.85

289.98

290.10

290.17

290.28

290.36

290.44

290.52

290.57

290.63

290.72

290.80

290.89

290.97

291.05

Dec.

291.12

291.12

291.32

291.40

291.47

291.56

291.62

291.70

291.76

291.82

291.90

292.20

292.34

292.50

292.64

292.74

292.78

292.90

292.98

292.98

293.10

293.10

293.25

293.39

293.43

293.47

293.49

293.50

-

-

f293.75

Jan.

_

293.94

_

-

-

_

_

294.53

294.54

294.57

294.52

294.76

294.86

294.95

295.04

295.07

-

.

-

295.43

295.48

295.50

295.60

295.68

295.74

_

-

-

-

-

f296.20

Feb.

296.30

296.34

296.40

296.48

296.52

296.55

_

296.70

296.81

296.83

_

_

_

297.10

297.15

297.19

_

-

-

297.28

297.50

297.64

297.80

297.84

298.16

298.21

298.46

298.50

-

Mar.

298.54

298.60

298.76

298.83

298.97

299.02

299.14

299.20

299.30

299.46

299.50

299.75

299.85

299.90

299.90

300.00

300.04

300.15

300.24

300.30

300.39

300.46

300.52

300.61

300.70

300.77

300.79

300 . 93

301.03

301.10

301 . 15

Apr.

301.28

361.40

301.47

301.56

301.64

301.78

301.89

301.98

302 .08

302.23

302.37

302.48

302.72

302 . 90

303.14

303.26

303.50

303.72

303.88

304.00

304.30

304.46

304.72

304.94

305.30

305.50

305.74

305.94

306.28

306.67

May

507.14

307.68

308.34

308 . 92

309.51

310.17

310.90

311.68

312.54

313.41

314.30

315.30

316.14

317.12

318.14

319.09

320.08

321.10

322.38

323.52

324.42

325.18

325.86

326.52

327.16

327.84

328.58

329.38

329.95

330.54

330.65

June

331.10

331.5?

332.14

332.72

333.27

334.37

335.28

335.80

336.12

336.13

336.21

336.17

336.16

336.10

336.02

335.90

335.80

335.71

335.64

335.62

335.63

335.60

335.54

335.51

335.46

335.43

335.40

335.37

335.33

335.31

July

335.27

335.22

335.18

335.14

335.08

335.04

334.94

334.76

334.56

334.32

334.20

334.02

333.72

333.31

332.81

332.25

331.60

330.90

330.16

329.39

328.57

327.74

326.83

325.90

324.85

324.08

323.54

323.28

323.32

323.40

323.48

Aug.

323.54

323.60

323.67

323.72

323.80

323.84

323.90

323.98

324.04

324.10

324.13

324.19

324.24

324.28

324.34

324.38

324.42

324.48

324.53

324.58

'324.63

324.67

324.72

324.68

324.41

323.74

323.10

322.26

321.45

320.80

320.16

Sept.

319.54

318.88

318.20

317.50

316.80

316.11

315.41

314.68

313.98

313.22

312.52

311.80

311.07

310.31

309.60

308.82

308.08

307.30

306.53

305.78

304.96

304.17

303.38

302.59

301.76

300.94

300.02

299.29

298.40

297.56

f Oage height estimated on basis of adjacent records. 

Note. Add 5,000 ft to obtain elevation above mean sea level. Oaj 

about 10 a.m. Oct. 16 to May 9, and at 6:30 a.m. May 10 to Sept. 30.

;e read at 7 a.m. Oct. 1-15,
PAYETTE RIVER BASIN 167

Deadwood River below Deadwood Reservoir, near Lowman, Idaho

Location. Lat 44°18', long 115°39', in NE^ sec. 17, T. 11 N., R. 7 E., on right bank 

300 ft upstream from Wilson Creek, a quarter of a mile downstream from Deadwood Dam at 

lower end of Deadwood Basin, 15 miles north of Lowman, and 18 miles upstream from 

mouth.

Drainage area. 108 sq mi.

Records available. October 1926 to September 1957. Monthly discharge only prior to May 

1927, published in WSP 1317. Published as "at Beaver Creek ranger station, near 

Lowman" prior to October 1934.

Gage. Water-stage recorder. Datum of gage is 5,180.52 ft above mean sea level (levels 

b~y Bureau of Reclamation). Datum of Geological Survey levels (1952, preliminary) is 

22.8 ft higher. Prior to June 22, 1935, water-stage recorder at site 600 ft upstream 

at datum 5.85 ft higher. June 22 to Sept. 30, 1935, staff gage at site 20 ft upstream 

at datum 2.00 ft higher. Oct. 1, 1935, to Aug. 3, 1955, water-stage recorder at present site at datum 1.00 ft higher.

Average discharge.--31 years (1926-57), 221 cfs (160,000 acre-ft per year).

Extremes.--Maximum discharge during year, 2,040 cfs July 24 (gage height, 8.65 ft); minimum recorded, 0.7 cfs Oct. 14 (gage height, 0.76 ft).

1926-57: Maximum discharge, 2,580 cfs July 14, 1953; maximum gage height, 8.93 ft 

June 7, 1956; no flow or small amount of leakage from reservoir for long periods during 

1934-37 when gates in dam were closed.

Remarks. Records excellent except those below 10 cfs, which are fair, and those for 

periods of no gage-height record or backwater from Wilson Creek, which are poor. Flow 

regulated by Deadwood Reservoir (see preceding page).

Revisions (water years).--WSP 1123: 1943. Figures of daily discharge for period May 8 

to June 1, 1956, have been revised to a flat estimate of 3 cfs, superseding figures 

published in WSP 1447. Revised monthly and water year figures are given herewith:

Month

Water year 1955-56 ..............

Cfs-days

130,918.8

Maximum

952

2,020

Minimum

.5

Mean

358

Runoff in 

acre-feet

259,700

Rating table, water year 1956-57, except period of backwater from Wilson 

Creek (gage height, In feet, and discharge, In cubic feet per second)

0.9

1.0

1.1 

1.3 

1.5

1.6

2.6

4.1

8.6

15

1.7 

2.0 

2.5 

3.0 

3.5

24

44

96

163

239

4.0 

5.0 

6.0 

8.0

325

575

900

1,740

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

1.8

1.8

1.8

1.8

1.7

1.8

1.9

1.8

1.7

1.9

1.9

1.9

1.9

1.7

2.0

2.0

1.9

2.0

2.0

2.0

1.9

1.9

*2.0 

1.9

2.0

2.1

27T

2.0 

2.0

2.1

2.0

59.3

1.91

118

Nov.

2.0

1.9

T^

2.0

_2.1

2.0

2.0

2.1

2.1

2.0

2.0

2.0

2.1

2.1

2.1

2.0

2.1

2.1

2.1

2.0

2.0

2.0

2.0 

2.0

2.0

2.0

2.0

2.0 

2.0

2.0

60.7

2.02

120

Dec.

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

1.9

275

2.1

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.3 

272

2.2

2.2

2.3

2.3 

2.2

2.3

2.2

66.0

2.13

131

Jan.

2.2

2.1

2.2

> 2.0

62.5

2.02

124

Feb.

> 2.0

-

56.0

2.00

111

Mar.

> 2.0

> 2.5

70.0

2.26

139

Apr.

> 3.0

> 3.5

101.0

3.37

200

May

> 3.5

> 3.0

18

3.0

3.0

7.0

274 

1.050

1,04(5

1,040

3,507.5

113

6,960

June

1,050

1,050

1,060

1,120

422

189 "552

850

1,030

1.150

1,130

1,090

1,070

1,020

952

860

780

725

*694

688

682

646

613 

590

564

547

531

512 

488

469

23,114

770

45,850

July

450

424

400

376

352

400

523

555

604

450

453

625

790

928

1,040

1,160

 1,260

1,290

1,320

1,380

1,420

1,480

1.520 

1,526

1,400

968

557

163 

3.4

3.2

T3

23,817.8

768

47,240

Aug.

3.4

3.2

3.4

3.4

3.4

3.5

3.8

4.0

9.5

6.0

3.4

2.8 2.8'

2.6

T7S

2.6

2.8

2.8

2.6 *2.8

2.8

2.6

64 

199

1,000

1,000

1,170

1.280 

992

1,000

1,000

7,781.8

251

15,430

Sept.

1.000

996

992

988

984

984

9SO

976

976

972

968

964

964

960

960

960

956

*956

952

948

940

936

932 

928

924

920

912

908 

904

900

28,640

955

56,810

Calendar year 1956: Max 2,020 Mln 15 Mean 344 Ac-ft 249,500

Water year 1956-57: Max 1,520 Mln - Mean 239 Ac-ft 173,200

* Discharge measurement made on this day. 

Note. No gage-height record Jan. 4 to Apr. 15; discharge estimated on basis of records for 

adjacent periods and weather records. Backwater from Wilson Creek Apr. 16 to May 28.
168 PAYETTE RIVER BASIN

South Fork Payette River near Garden Valley, Idaho

Location.--Lat 44°04 I , long 115°56', in sec. 1, T. 8 N., R. 4 E., on right bank at Garden 

Valley ranger station, 300 ft upstream from Station Creek, 2.7 miles southeast of 

Garden Valley, and 5.9 miles upstream from Middle Fork.

Drainage area. 779 sq mi.

Records available. May 1921 to September 1957. Monthly discharge only for some periods, 

published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 3,090 ft (from river-profile map). 

Prior to Aug. 3, 1926, staff gage at datura 0.98 ft higher. Aug. 3, 1926, to Dec. 5, 

1933, staff gage at present datum.

Average discharge. 36 years, 1,302 cfs (942,600 acre-ft per year).

Extremes. Maximum discharge during year, 8,790 cfs June 5 (gage height, 7.00 ft); minimum, 262 cfs Feb. 12 (gage height, 1.61 ft), but may have been less during period of 

ice effect.

1921-57: Maximum discharge observed, 10,600 cfs May 26, 1928 (gage height, 8.0 ft); 

minimum, 75 cfs Dec. 15, 1935, Jan. 26, 1936 (gage height, 0.70 ft), from rating curve 

extended below 280 cfs; minimum daily, 196 cfs Dec. 10, 1944.

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

Small diversions above station. Flow regulated by Deadwood Reservoir (see p. 166).

Rating table, water ydar 1956-57, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 1 to Sept. 5o)

1.5 

1.7 

2.0 

2.5

250

375

600

1,050

3.0 

3.5 

4.0

1,570

2,190

2,890

5.0 

6.0

7.0

4,560

6,710

9,030

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

520 

512

498

498

498

490

482

*I5o

498

505

642

642

568

536

520

505

505

520

584

528

512

505

520

536

528

600

552" 685 

520

617

651

16,807

542

33,340

Nov.

576 

528

505

544

536

552

576

544

544

552

568

568

*584

536

424

536

532" 634

445

562

460

505

505

490

475

468

460 

452

460

460

15,461

515

30,670

Dec.

438 

452

505

490

475

460

445

350

35o

505

617

685

728 TTgsos

576

528

512

*498

417

438

396

445

528

424

370

380 

417

424

424

445

15,089

487

29,930

Jan.

417 

431

389

360

350

370

420

500

490

430

430

480

460

420

400

370

310

290

300

400

420

400

390

370

340

320

310 

300

310

350

370

11,897

384

23,600

Feb.

390 

400

390

*390

380

370

360

375

368

349

349

349" 336

368

389

375

382

389

403

417

403

410

498

728

1,020

1,120

1.150 

1,020

-

13,878

496

27,530

Mar.

898 833"

770

694

676

626 6"2T

702

788

815

770

833

*753

676

694

668

710

676

694

744

779

744

694

668

668

651

634

651

702

779

8 7O

22,486

725

44,600

Apr.

870 

833

8BT

860

936

1,340

1,240

1,180

1,190

1,310

1,350

1,430

1,450

1,530

1,750

1,680

1,630

1,540

1,500

1,540

1,570

*1,640

1,880

1,970

1,750

1,530

1,450 

1,570

2,070

2,660

44,100

1,470

87,470

May

2,800 

3,220

3,540

3,140

3,020

3,350

4,150

4,410

4,640

4,820

4,560

4,700

5,000

5,040

4,720

4,820

4,980

5,490

6,460

5,690

*4,660

4,050

3,650

3,560

3,560

3,790

4,190 

4,600

6,130

6,550

6^870

140,160

4,521

278.OOO

June

7,060 

7,380

7,930

8,590

8,230

7,400

6,850

6,660

6,500

5,710

*5,450

5,250

5,110

4,640

4,150

5,740

5,450

5,500

5,550

5,560

5,560

3,550

5,190

3,220

3,270

3,130

3,040 

5,190

5,120

5,060

146.OOO

4,867

289,600

July

2.960 

*2,830

2,640

2,470

2,290

2,220

2,550

2,290

2,270

2,150

2,000

2,090

2,250

2,510

2,520

2,400

2,460

2,450

2,450

2,450

2,500

2,490

2,530

2,490

2,570

2,090

1,650 

1,520

917

879

8_5_1.

67,897

2,190

134,700

Aug.

853 

815

797

770

755

744

756

719

702

685

668

660

642

*626

608

600

592

584

576

568

560

552

185" 544

1,240

1,550

1,620 

1,850

1,650

1,570

1,570

27,029

872

55,610

Sept.

1,560 

1,540

1,520

1,520

1,500

1,480

1,480

1,470

1,460

1,460

1,460

*1 , 460

1,440

1,440

1,430

1,420

1,420

1,440

1,460

1,440

1,450

1,420

1,400

1,400

1,390

1,590

1,570 

1,360

1,550

1,550

43,260

1,442

85,800

Calendar year 1956: Max 9,490 Min 350 Mean 1,986 Ac-ft 1,442,OOO

Water year 1956-57: Max 8,390 Min 290 Mean 1,545 Ac-ft 1,119,OOO

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 8, 9, 26, 27, Jan. 4 to Feb. 7 (no gage 

height record Jan. 12, 13, Jan. 27 to Feb. 5; discharge estimated on basis of weather records 

records for nearby stations.
PALETTE RIVER BASIN 169

South Pork Payette River near Banks, Idaho

Location. Lat 44°05'30", long 116°06'00", in sec. 28, T. 9 H., R. 3 E., on right bank 

1 mile upstream from confluence with North Pork Payette River and li miles northeast 

of Banks.

Drainage area.--1.200 sq mi, approximately. 

Records available. August 1921 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 2,805 ft (from river-profile map). 

Prior to Sept. 12, 1922, staff gage at same datum.

Average discharge.--36 years, 1,759 cfs (1,273,000 acre-ft per year).

Extremes.--Maximum discharge during year, 11,200 cfs June 5 (gage height, 9.96 ft); minimum daily, 420 cfs Jan. 18; minimum gage height recorded, 0.45 ft Jan. 18.

1921-57: Maximum discharge, 13,800 cfs May 17, 1927 (gage height, 10.6 ft, from 

floodraarks); minimum, 225 cfs Dec. 15, 1935, Jan. 26, 1936, Dec. 26, 1939.

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

good. Small diversions above station for irrigation. Plow regulated by Deadwood 

Reservoir (see p. 166).

Rating table, water year 1956-57 (gage height, in feet, and discharge, 

In cubic feet per second)

1.0 

2.0

405

495

705

1,370

3.0 

4.0 

5.0

2,170

3,130

4,230

6.0

8.0

10.0

5,450

8,200

11,300

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

650 

634

622

*622 

622

617 

5T2~ 612

634

644

807

832

747

694 

666

656

644

650

783

688

661

656

683

711

694

795

1,010 

851 

741

890 

974

22,102

713

43,840

Nov.

813

741

700

7S5 

733

735 

783

741

*735

747

777

783

813

765 

612

717

851

825

644

555

634

678

683

666

650

644

634 

622 

644

644

21,274

709

42,200

Dec.

628 

628

723

694 

672

656 

634

535 B3B717

858

1,060

1,150

1,180 

968

890

819

783

*759

644

644

590

639

789

644

540

545 

612 

628

628

666

22,458

724

44,540

Jan.

650 

656

628

540 

540

585

666

771

747

650

644

717

711

656 

622

565

468

420

430

500

620

600

580

560

530

500

470 

460 

480

510 

550

18,026

581

35,750

Feb.

590 

600

600

600 

*595

580 

585

595

590

555

555

555

555

585 

606

612

612

617

634

656

644

644

771

1,270

2,250

2,640

2,850 

2,230

25,176

899

49,940

Mar.

1,850 

1,640

1,450

1,300 

1,260

1,180 

1,190

1,380

1,600

1,680

1,550

*1,770

1,570

1,380 

1,340

1,310

1,400

1,340

1,390

1,470

1,570

1,460

1,360

1,320

1,340

1,290

1,260 

1,280 

1,400

1,650

1,920

44,900

1,448

89,060

Apr.

1,910 

1,800

1,810

1,780 

2,000

2,770 

2,500

2,370

2,390

2,610

2,730

2,900

2,960

3,210 

3,690

3,380

3,220

3,040

2,960

3,000

3,090

3,210

*3,520

3,580

3,150

2,800

2,600 

2,780 

3,540

4,510

85,810

2,860

170,200

May

4,850 

5,450

5,900

5,450 

5,280

5,520 

6,460

6,940

7,230

7,440

7,160

7,400

7,750

7,880 

7,640

7,550

7,600

8,290

9,720

8,650

7,260

*6,440

5,830

5,610

5,520

5,750

6,190 

6,700 

8,110

8 j 680

9,060

215,310

6,945

427,100

June

9,390 

9,870

10,400

10,800 

10,600

9,800 

8,980

8,520

8,000

7,200

*6,880

6,620

6,450

5,900 

5,360

4,820

4,410

4,230

4,250

4,470

4,450

4,170

3,970

3,970

3,980

3,840

3,710 

3,820 

3,750

5,640

186,250

6,208

369,400

July

*5,540 

3,580

3,160

2,960 

2,760

2,640 

2,740

2,690

2,630

2,510

2,550

2,580

2,520

2,610 

2,590

2,680

2,720

2,710

2,710

2,690

2,750

2,750

2,770

2,780

2,770

2,330

1,920 

1,530 

1,150

1,050

1,000

77,750

2,507

154,200

Aug.

970

940

920

900 

880

860 

850

840

825

810

800

790

780

765 

*759

747

735

723

711

700

688

685

678 765"

1,210

1,650

1,700 

1,940 

1,790

1,710

1,720

30,839

995

61,170

Sept.

1,710 

1,670

1,650

1,630 

1,610

1,610 

1,590

1,570

1,570

1,570

1,570

 1,560

1,550

1,540 

1,530

1,530

1,520

1,540

1,610

1,570

1,550

1,530

1,520

1,500

1,500

1,490

1,480 

1,460 

1,460

1,450

46,640

1,555

92,510

Calendar year 1956: Max 12,900 Mln 535 Mean 2,674 Ac-ft 1,941,000

Water year 1956-57: Max 10,800 Mln 420 Mean 2,182 Ac-ft 1,580,000

* Discharge measurement made on this day.

Note. No gage-height record Jan. 18 to Feb. 4, July 28 to Aug. 14; discharge estimated on basis 

of weather records and records for station near Garden Valley, North Pork Payette River near Banks, 

and Payette River near Horseshoe Bend.

503667 O - 59 - 12
170 PAYETTE RIVER BASIN

Payette Lake at McCall, Idaho

Location.--Lat 44°55', long 116°07i, in sec. 8, T. 18 M., R. 3 E., at outlet of lake on 

North Pork Payette River, at McCall.

Drainage area.--144 sq ml.

Records available. August 1921 to September 1957 (fragmentary prior to Nov. 23, 1943). 

Prior to October 1942, published as "at Lardo."

Gage. Water-stage recorder. Datum of gage is 4,982.73 ft above mean sea level, unadjusted. Prior to Aug. 26, 1931, staff gage at site 25 ft downstream at datum 2.0 ft 

higher. Aug. 26, 1931, to Nov. 22, 1943, staff gage at site 75 ft downstream at 

present datum.

Extremes. Maximum gage height during year, 7.05 ft June 30, July 1; minimum, 1.65 ft

1921-57: Maximum gage height observed, 8.75 ft July 13, 1935; minimum observed, 

0.95 ft Oct. 3, 1931.

Remarks.--Flow from Payette Lake is regulated within natural range by taintor gates and 

removable stoplogs of a buttress and slab-type dam completed in November 1943. 

During period 1923 to 1943 lake was regulated by structure consisting of a series of 

concrete-filled cribs supporting removable flashboards. Some regulation is reported 

to nave been effected by timber flashboards for several years prior to 1923. Lake 

area is approximately 5,000 acres. No capacity table has been developed, water is 

used for irrigation in vicinity of Emmett. No diversion above station.

Cooperation. Water-stage recorder inspected by employees of U. S. Forest Service. 

Revisions (water years). WSP 753: 1931. WSP 1013: Drainage area.

Gage height, in feet, at 12 p.m., water year October 1956 to September 1957

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.

5.94

577F

5.59

5.42

5.26

5.10

4.95

4.82

4.57

4.32

4.05

3.85

3.64

3.42

3.23

3.06

2.88

2.79

2.67

2.57

2.49

2.39

2.35

2.27

2.27

2.26

2.28

2.22

2.18

2.21

2.16

Nov.

2.12

2.07

2.04

2.00

1.97

1.95

1.92

1.90

1.88

1.87

1.85

1.84

1.87

1.85

1.85

1.86

1.86

1.85

1.82

1.80

1.79

1.77

1.76

1.75

1.74

1.73

1.72

1.70

1.70

1.68

Dec.

1.67

1.67

1.66

1.68

1.69

1.69

1.68

1.67

1.69

1.74

1.83

1.84

1.84

1.83

1_.85

1.85

1.83

1.83

1.82

1.81

1.81

1.79

1.79

1.78

1.77

1.75

1.74

1.74

1.73

1.72

1.71

Jan.

1.70

1.71

1.71

1.70

1.69

1.68

TTTC

1.73

1.73

1.72

1.73

1.72

1.73

1.73

1.73

1.73

1.72

1.71

1.74

1.78

1.77

1.77

1.77

1.77

1.76

1.75

1.74

1.73

1.72

1.72

1.75

Feb.

1.77

1.76

1.77

1.77

1.77

1.76

1.76

1.76

1.75

1.74

1.73

1.72

1.71

1.70

1.70

1.69

1.68

1.68

1.68

1.68

1.68

1.70

1.74

1.83

1.85

1.93

T79T

1.92

-

Mar.

1.92

1.91

1.90

1.9<5

"1.92

1.94

1.95

1.95

1.97

1.97

1.98

2.02

275T

1.99

1.98

2.00

2.00

1.98

1.97

1.98

1.97

1.95

1.94

1.93

1.95

1.94

1.93

1.92

1.97

1.97

1.99

Apr.

1.99

1.98

1.97

1.96

2.02

2.02

2.02

2.02

2.02

2.03

2.04

2.16

2.21

2.28

2.31

2.32

2.33

2.33

2.34

2.38

2.42

2.45

2.50

2.55

2.56

2.56

2.55

2.58

2.68

2.86

Hay

3.07

37^4

3.52

3.66

3.81

3.93

4.12

4.42

4. 35

5.07

5.21

5.40

5.72

5.71

5.63

5.65

5.65

5.94

6.20

6T5&-

5.60

5.29

5.04

4.91

4.89

4.99

5.16

5.35

5.55

5.66

5.90

June

6.12

6.36

6.49

6.51

6.53

6.48

6.20

6.35

6.16

5.94

5.56

5.43

5.40

5.28

5.18

5.20

5.35

5.59

5.84

6.05

6.14

6.18

6.32

6.52

6.62

6.70

6.84

6.85

6.96

7.05

July

7.02

6T5T

6.88

6.80

6.70

6.64

6.62

6.60

6.58

6.57

6.59

6.60

6.60

6.58

6.56

6.56

6.56

6.56

6.55

6.54

6.55

6.53

6.52

6.52

6.52

6.51

6.51

6.51

6.50

6.48

5745"

Aug.

6.45

6^45

6.42

6.41

6.40

6.41

6.41

6.39

6.38

6.38

6.36

6.34

6.34

6.30

6.30

6.28

6.28

6.26

6.25

6.24

6.23

6.21

6.18

6.17

6.16

6.14

6.12

6.12

6.12

6.10

6TTT

Sept.

6.09

5759"

6.08

6.07

6.06

6.06

6.05

6.04

6.00

5.98

5.98

5.96

5.95

5.93

5.93

5.91

5.91

5.92

5.91

5.90

5.90

5.89

5.88

5.87

5.87

5.80

5.60

5.42

5.27

5.12
PAYETTE RIVER BASIN 171

North Pork Payette River at McCall, Idaho

Location. Lat 44°54'30", long 116°07i30", in sec. 8, T. 18 N., R. 3 E., on left bank at 

McCall, a quarter of a mile downstream from outlet of Payette Lake.

Drainage area.--144 sq ml.

Records available.--September 1908 to June 1917, May 1919 to September 1957. Prior to 

October 1942, published as "at Lardo."

Gage.--Water-stage recorder. Altitude of gage is 4,970 ft (by barometer). Prior to

0"ct. 14, 1908, staff gage at site 1 mile downstream at different datum. Oct. 14, 1908, 

to Dec. 18, 1923, staff gages at sites near present gage at present datum.

Average discharge.--46 years (1908-16, 1919-57), 357 cfs (258,500 acre-ft per year).

Extremes. Maximum discharge during year, 3,100 cfs June 6 (gage height, 6.65 ft); minimum, 12 cfs Sept. 19, 20 (gage height, 1.47 ft).

1908-17, 1919-57: Maximum discharge, 4,260 cfs June 10, 1933, June 4, 1948; maximum gage height, 7.71 ft June 4, 1948; practically no flow Nov. 5-8, 1931, Nov. 17-24, 

1933, Nov. 14-27, 1935, Oct. 22 to Nov. 11, 1938.

Remarks. Records excellent except those below 100 cfs, which are good, and those for 

period of no gage-height record June 7 to July 8, which are poor. Plow partly regulated by gates at outlet of Payette Lake (see preceding page) and several smaller lakes 

upstream. No diversion above station.

Cooperation. Water-stage recorder inspected by employee of U. S. Forest Service. 

Revisions.--WSP 963: Drainage area.

Rating table, water year 1956-57 (gage height, In feet, and discharge 

In cubic feet per second)

1.4 

1.6 

1.8 

2.0

17.4

29.9

48.3

2.3

2.6 

3.0 

3.5

89.8

154

275

486

4.0 

5.0 

6.0 

7.0

770

1,490

2,430

3,480

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ao-ft

Oct.

467

448

429

406

389

372

355

343

583

812

733

660

597

527

472

420

376

339

312

279

255

226

210

190

*181

181

187

176

162

165

157_

11,409

368

22,630

Nov.

149

13T

126

115

107

103

97

92

88

83

80

78

82

83

78

78

83

82

75

71

70

70

63

59

56

55

54

54

53

52

2,473

82.4

4,910

Dec.

51

48

47

*46

48

48

47

46

45

E?

60

66

68

68

68

70

6T

67

67

64

67

64

63

63

60

58

58

56

55

54

53

1,794

57.9

3,560

Jan.

52

53

52

52

51

50

BT

*54

55

54

54

54

55

56

56

56

55

55

56

64_

64

63

63

63

61

59

58

56

55

54

58

1,740

56.1

3,450

Feb.

63

63

63

63

63

62

61

61

59

58

56

55

54

53

52

52

51

BT

*51

51

51

53

56

66

74

83

90

90

-

1,705

60.9

3,380

Mar.

88

90

88

87

W

88

94

. 95

95

97

99

107

108

TOT

103

103

108

103

*101

99

101

99

97

95

97

95

94

92

95

99

103

3,017

97,3

5,980

Apr.

105

101

101

105" 99

113

111

111

113

117

121

140

159

176

190

193

196

198

201

207

219

235

248

261

268

268

268

275

305

559

5,563

185

11,030

May

438 5"5T

696

782

866

953

*1 , 050

1,210

1,480

1,730

1,860

1,990

2,250

2,390

2,310

2,300

2,310

2,400

2,750

2,710

2,420

2,110

1,870

1,730

1,680

1,710

1,810

1,950

2,130

2,250

2,410

55,089

1,777

109,300

June

2,600

2,790

2,970

3,040

*3,05o

3.070

2,900

2,880

2,880

2,620

2,350

2,140

1,650

1,550

1,300

1,200

700

750

900

925

950

1,000

700

450

55U

600

650

700

700

700

49,265

1,642

97,720

July

700

520' 870

770

720

550

520

510

*297

229

142

142

144

142

142

110

85

82

82

82

83

71

52

50

48

46

44

37

32

32

32

7,264

234

14,410

Aug.

^ 31

3T

30

29

29

29

29

29

29

29

29

29

29

26

26

25

25

24

24

24

25

*22

21

55- 20

21

21

21

21

21

21

790

25.5

1,570

Sept.

20

20

20

20

20

20

20

18

16

15

14

14

13

15

15

14

*14

14

13

12.

13

13

13

13

13

164

481

4BT

438

393

2,521

77.4

4,600

Calendar year 1956: Max 3,510 Mln 17 Mean 454 Ac-ft 337,000

Water year 1956-57: Max 3,070 % Mln 12 Mean 390 ^Ao-ft 282,500

* Discharge measurement made on this day.

Note. No gage-height record Jan. 22-26, Jan. 28 to Feb. 18, June 7 to July 8; discharge 

estimated on basis of records for Payette Lake, Cascade Reservoir, and records for other nearby 

streams.
172 PAYETTE RIVER BASIN

Lake Pork Payette River above Jumbo Creek, near McCall, Idaho

Location. La t 44°55', long 115° 59', in NE^ sec. 8, T. 18 N., R. 4 E., on left bank 200 ft 

upstream from bridge at abandoned powerplant, a quarter of a mile upstream from Jumbo 

Creek, 3^ miles upstream from Lake Fork Reservoir dam, and 5~s miles east of McCall.

Drainage area. 48.9 sq mi.

Records available. --October 1945 to September 1957.

. --Water-stage recorder. Altitude of gage is 5,140 ft (from topographic map). Prior 

o Nov. 10, 1945, staff gage at site 200 ft downstream at different datum.

Average discharge. --12 years, 152 cfs (110,000 acre-ft per year).

Extremes .--Maximum discharge during year, 1,800 cfs June 2 (gage height, 8.15 ft); mini- 

 mum, 10 cfs Sept. 28, 29, 30; minimum gage height, 1.88 ft Sept. 29, 30.

1945-57: Maximum discharge, 2,600 cfs June 3, 1948 (gage height, 9.19 ft), from

rating curve extended above 1,000 cfs by logarithmic plotting; minimum, 5.5 cfs Nov. 9,

1952 (sage height, 1.62 ft).

Remarks. --Records excellent except those for periods of ice effect or no gage-height record, which are fair. Wo diversion above station.

~Ga 

Rating table, water year 1956-57, except periods of loe effect (gage

height, In feet, and discharge, In cubic feet pe

9.7

2.6 

3.0

3.5

4.0 

4.5 

5.0 

5.5

71

105

151

216

306

6.0 

6.5 

7.0

8.0

ond)

422

595

850

1,630

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Z9

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

13

13 

12

3T

12

12

12

12

12

17

28

2T

24 

20

18

18

18

20

27

21

20

19

20

*19

18

22

27

23

23

24

£.5

588

19.0

0.389

0.45

1,170

Nov.

21

19

22

22

21

25

27

24

25

27

30

29

34 

27

29

30

30

28

21

22

26

25

24

24

23

23

22

21

22

23

746

24.9

0.509

0.57

1,480

Dec.

22

23 

25

*25

24

24

23

21

24

24

25

29

34 

2~9" 35

28

25

26

24

22

24

22

24

22

22

21

21

21

22

23

23

759

24.5

0.501

0.58

1,510

Jan.

22

22 

21

19

19

20

21

22

*22

21

22

23

23 

22

21

18

16

IF

19

20

20

19

19

18

17

17

18

20

20

20

21

620

20.0

0.409

0.47

1,230

Feb.

21

21 

21

21

21

21

20

2T

20

20

21

20

20 

21

20

20

21

21

21

*22

22

23

25

30

55

75

107

T2

823

29.4

0.601

0.63

1,630

Calendar year 1956: Max 1,530 Mln 12

Mar.

52

4T 

42

40

38

38

37

42

48

50

45

43

40 

35

3?

38

38

37

37

*38

38

37

36

37

36

35

35

35

39

40

42

1,233

39.8

0.814

0.94

2,450

Apr.

40

40 

42

41

52

59

52

53

59

67

71

84

84 

104

104

91

91

92

99

101

118

126

141

140

117

104

102

135

244

351

3,004

100

2.04

2.28

5,960

May

401

44T 

419

414

469

498

*582

746

902

768

802

1,070

1,350 

922

826

850

838

1,100

1,230

814

618

519

475

495

553

676

779

876

971

1,000

1,140

23,550

760

15.5

17.91

46,710

June

1,150

1,350 

1,310

1,230

1,260

*1,100

844

1,310

943

746

705

705

587 

462

382

334

3BT

414

472

505

419

367

377

430

404

354

367

391

370

342

19,981

666

13.6

15.20

39,630

July

334

294 

282

232

216

212

183

166

*153

140

128

119

109 

99

90

83

78

72

69

65

62

60

55

52

48

46

44

41

39

38

36_

3,645

118

2.41

2.77

7,230

Aug.

3432" 

31

29

28

30

29

27

26

25

24

23

22 

21

21

20

19

19

18

18

*17

16

16

15

15

15

15

16

16

18 

19

674

21.7

0.444

0.51

1,340

Sept.

18

16 

15

15

14

14

13

13

13

13

13

13

12 

12

12

11

11

*15

18

15

14

13

12

12

11

11

11

10

To

10

390

13.0

0.266

0.30

774

Mean 175 Cfsm 3.53 In. 48.81 Ac-ft 127,300

Water year 1956-57= Max 1,350 Mln 10 Mean 153 Cfsra 3.13 In. 43.6! Ac-ft 111,100

Peak discharge (base, 850 cfs).--May 13 (8 a.m.) 1,580 cfs (7.90 ft); May 19 (2 a.m.) 1,500 cfs

(7.82 ft); June 2 (9:30 p.m.) 1.800 cfs (8.15 ft); June 8 (8:30 p.m.) 1,690 efs (8.03 ft).______

* Discharge measurement made on this day. *

Note.--Stage-discharge relation affected by Ice Nov. 1, 2, 14, 15, Nov. 19 to Dec. 2, Dec. 8, 

Dec. 17 to Feb. 26, Mar. 14 (no gage-height record Jan. 21 to Feb. 19; discharge estimated on basis 

of weather records and records for station below Lake Irrigation District Canal and Johnson Creek 

at Yellow Pine).
PAYETTE RIVER BASIN 173

Lake Fork Reservoir near McCall , Idaho

Location. Lat 44°54' , long 116°03', in NW^NWlr sec. 13, T. 18 N. , R. 3 E., at outlet gate 

near center of dam on Lake Fork Payette River, 3 miles east of McCall.

Drainage area. 64 sq mi, approximately.

Records available . April 1926 to September 1957 (fragmentary).

Gage . Staff gage and graduations on concrete gate-control structure of dam; gage read 

once or twice daily during irrigation season. Datum of gage is at mean sea level 

(levels by Lake Irrigation District) .

Extremes. Maximum contents observed during year, 19,390 acre-ft June 29, July 3 (elevation, 5,118.54 ft); practically no storage during winter months.

1926-57: Maximum contents observed, 19,740 acre-ft June 19, 1941 (elevation, 

5,118.75 ft); no storage above elevation 5,101.0 ft for long periods during fall and 

winter of most years.

Remarks . --Reservoir is formed by earth- and rock-fill dam completed in 1926. Capacity, 

16,940 acre-ft between elevations 5,101.0 (lower limit of capacity table, 4.0 ft 

above gate sill of outlet) and 5,117.0 ft (top of f lashboards , 5.0 ft above spillway 

crest). Dead storage unknown. Water is used for irrigation of about 6,800. acres 

near McCall and Norwood. Figures given herein represent contents above 5,101.0 ft 

and are computed from elevations as observed. There is some usable storage below 

elevation 5,101.0 ft, but natural flow passing through reservoir when outlet gates 

are operating prevents withdrawal of storage to elevation of sill of gates. Elevation 

in reservoir during water year 1957 reported below 5,101.0 ft as follows: Jan. 10, 

5,100.33 ft; Feb. 19, 5,100.11 ft.

Cooperation. Elevation record and capacity table furnished by Lake Irrigation District.

Capacity table (elevation, in feet, and contents, 

In acre-feet)

5,101.0 0 5,110.0 6,770

5,102.0 481 5,112.0 9,380

5,103.0 969 5,114.0 12,320

5,104.0 1,500 5,116.0 15,390

5,106.0 2,810 5,119.0 20,140

5,108.0 4,550

Contents, in acre-feet, water year October 1956 to September 1957

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

W(*)

Oct.

1,680

_

"

Nov. Dec. Jan. Feb.

-

Mar.

96

_

-

Apr.

-

-

-

-

-

_

-

-

-

-

_

-

-

-

-

_

-

1,020

-

-

_

-

-

-

-

_

-

-

2,130

a3,000

_

-

May

-

-

-

-

-

.

7,660

-

-

-

12,560

-

-

-

14,740

_

-

-

-

15,120

_

14,000

-

_

-

_

-

-

14,430

_

a 15, 000

-

+12,000

June

14,990

15,540

15,450

-

15,570

15,570

15,140

15,290

15,820

15,360

15,360

16,070

16,530

16,940

17,030

17,220

17,250

17,510

17,820

18,270

18,590

18,670

18,750

18, 970

18,750

19,200

19,200

19,330

19,360

19,350

5,118.51

+4,350

July

19,330

19,330

19.380

19, 350

19,330

19,330

19,270

19,140

18,970

18,830

18,590

18,430

18,170

17,920

17,650

17,350

17,030

16,880

16,420

16,100

15,790

15,480

15,140

14,770

14,460

14,090

13,750

13,390

13,050

12,680

12,290

5,113.98

-7,060

Aug.

11.910

11,540

11,120

10,750

10,360

10,010

9,620

9,240

8,920

8,570

8,240

7,900

7,600

7,250

6,970

6,630

6.300

6,050

5,720

5,450

5,160

4,860

4,600

4,340

4,080

3,840

3,580

3,370

3,150

2,970

2,790

5,105.98

-9,500

Sept.

2,610

2,420

2,240

2,070

1,920

,800

,690

,590

,520

,440

,390

,330

,270

,210

,150

,090

,050

,020

979

931

.

-

775

-

692

_

657

-

-

a381

-

-2,409

t Elevation, In feet, at end of month. 

* Change in contents, In acre-feet.

a Contents estimated on basis of records for Lake Fork above Jumbo Creek, Lake Irrigation District 

Canal, find Lake Fork balow Lake Irrigation District Canal.
174 PAYETTE RIVER BASIN

Lake Irrigation District Canal near McCall, Idaho

Location.--Lat 44°54', long 116°03', in SW£ sec. 13, T. 18 N. , R. 3 E., on right bank 

600 ft downstream from head of canal, half a mile south of Lake Fork Reservoir, and 

3 miles southeast of McCall.

Records available. May 1926 to September 1957 (irrigation seasons only 1927-34, 1942, 

1946).

Gage.--Staff gage read once daily. Altitude of gage is 5,090 ft (from topographic map). 

Prior to May 1947, staff gage at same site at different datum.

Extremes. 1926-57: Maximum daily discharge, 205 cfs July 18, 1953; no flow or small 

amount of leakage through headgate during nonirrigation seasons.

Remarks. Records good except those below 10 cfs, which are poor. No diversion between 

headgate and station. Canal diverts from right bank of Lake Fork Payette River in 

Sw"£ sec. 13, T. 18 N., R. 3 E., for irrigation of 6,800 acres near McCall and Norwood, 

in the Lake Irrigation District project.

Cooperation. Gage readings furnished by Lake Irrigation District.

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

IS

16

17

18

19

20

21

22

23

24

25

26

27

28

25

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

0

0

0

0

0

0

0

1

4

2

0

0

4

7

6

4

3

3

3

3

3.5

*3.4

3.5

3.5

3.5

3.5

2

0

62.9

2.03

125

Nov.

0

0

0

Dec.

(*)

0

0

0

Jan.

(*)

0

0

0

Feb.

(*)

-

0

0

0

Mar.

(*)

0

0

0

Apr.

> 0

> 1

18

0.6

36

May

1.5

l7¥

1.5

1.5

1.5

1.5

 1.6

1.5

1.5

2.0

2.0

2.0

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.6

2.5

3.0

5.5

5.5

5.5

5.5

5.5

5.5

5.6 

5.5

8 . 2

97.5

3.15

193

June

15

24

26

28

47

*66

80

92

95

101

109

128

140

148

151

155

160

162

169

172

175

177

177

177

184

188

188

188

188 

188

3,898

130

7,730

July

188

188

188

185

184

184

184

184

184

*177

172

166

159

157

153

152

149

147

150

151

150

149

149

147

147

144

143

142

141 

141

158

4,993

161

9,900

Aug.

136

139

TJS

136

136

135

130

127

124

112

108

112

111

108

107

102

97

96

93

92

*87

85

84

83

82

80

78

78

78 

78

TS

3,227

104

6,400

Sept.

74

74

71

68

61

58

45

38

38

38

36

36

36

36

33

*32

32

32

32

32

29

28

25

28

28

28

28

28

28 

28

1,183

39.4

2,350

Calendar year 1956: Max 184 Mln 0 Mean 41.3 Ac-ft 30,020

Water year 1956-57: Max 188 Mln 0 Mean 36.9 Ac-ft 26,730

* Discharge measurement made on this day.

Note. No gage-height record Oct. 1-24, Oct. 26 to May 6, May 8-19, 21-28, 30; discharge estimated 

on basis of 4 discharge measurements or field estimates, records for Lake Fork Payette River below 

Lake Irrigation District Canal, and Inflow-outflow atudy of Lake Fork Reservoir.
PAYETTE RIVER BASIN 175

Lake Pork Payette River below Lake Irrigation District Canal, near McCall, Idaho

Location. Lat 44°54' , long 116°03', in SW£ sec. 13, T. 18 N. , R. 3 E., on right bank 

300 ft downstream from diversion dam for Lake Irrigation District Canal, half a mile 

downstream from Lake Pork Reservoir, and 3 miles southeast of McCall.

Drainage area.--64 sq mi, approximately.

Records available. October 1940 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 5,080 ft (from topographic map).

Average discharge. 17 years, 131 cfs (94,840 acre-ft per year).

Extremes. Maximum discharge during year, 1,290 cfs June 3 (gage height, 6.31 ft); minimum, 13 cfs Oct. 16, 17 (gage height, 2.37 ft).

1940-57: Maximum discharge, 2,120 cfs June 3, 1948 (gage height, 7.09 ft), from 

rating curve extended above 1,200 cfs by logarithmic plotting; minimum, 0.4 cfs 

Mar. 27, 28, 1944; minimum gage height, 1.76 ft Mar. 28, 1944.

Remarks. Records excellent except those below 50 cfs, which are good, and those for 

periods of no gage-height record, which are fair. Plow regulated by Lake Fork Reservoir (see p. 173). Lake Irrigation District Canal diverts above station for irrigation 

of about 6,800 acres.

Revisions (water years).--WSP 963: 1941.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.3

2.4

2.5 

2.7 

2.9 

3.2

9.6

14

19

33

53

95

3.5 

4.0 

4.5 

5.0 

5,5 

6.5

154

280

440

640

870

1,400

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

22

22

22 

22

22

21

21

21

21

22

20

16

19

22

21

17

13

14

17

17

17

17

17

16

*16

16

16

16

16

121

2_14

874

28.2

1,730

Nov.

188

163

139 

119

104

92

82

75

69

66

61

58

58

55

53

52

52

50

48

46

44

43

42

41

40

39

38

38

37

36

2,028

67.6

4,020

Dec.

35

34

*34 

34

34

34

34

33

33

34

35

35

35

35

36

37

37

37

37

36

36

34

34

34

33

b32

b32

32

31

3T

31

1,059

34.2

2,100

Jan.

28

28

b28 

b29

b29

b30

30

29

29

*28

28

28

28

28

b28

28

28

28

28

28

27

27

27

27

27

27

26

26

26

26

26

860

27.7

1,710

Feb.

26

25

25 

25

25

25

25

24

24

24

24

24

24

23

23

23

23

23

*23

23

b24

24

25

27

29

32

37

41

-

720

25.7

1,430

Mar.

43

47

46 

46

48

48

48

48

49

52

53

54

54

53

53

53

52

52

*52

51

52

52

51

50

50

50

49

49

49

50

51

1,552

50.1

3,080

Apr.

52

BT

53 

53

54

58

60

61

64

66

71

73

75

85

90

95

100

95

108

111

117

121

123

127

125

125

127

129

129

135

2,735

91.2

5,420

May

146

TeT

174 

181

185

190

*197

206

238

331

430

631

940

1,060

950

900

865

910

1.130

1,100

890

721

622

567

555

575

636

712

816

895

990

18, 904

610

37,500

June

1,070

1,140

1.250 

1,230

1,200

*1,180

950

910

1,050

766

409

313

298

283

216

169

167

152

TST

172

197

204

163

174

194

197

176

185

202

202

14,980

499

29,710

July

163

133

93 

92

55

68

61

58

71

73

*69

79

81

78

79

81

81

81

79

71

68

69

71

71

71

71

69

68

68

66

68

2,406

77.6

4,770

Aug.

72

73

73 

73

71

71

69

66

64

65

61

57

57

57

54

53

54

52

52

53

*55

54

53

52

ii

53

60

54

49

50

51

1,827

58.9

3,620

Sept.

51

48

40 

34

32

28

31

27

21

20

18

17

17

17

18

*18

17

17

15

15

17

18

17

16

16

15

17

23

22

19

681

22.7

1,350

Calendar year 1956: Max 1,390 Min 13 Mean 150 Ac-ft 108,600

Water year 1956-57: Max 1,250 Min 13 Mean 133 Ac-ft 96,440

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Mote.--Ho gage-height record Jan. 16 to Feb. 18 and Mar. 13-18 (ice affected most of periods); 

discharge estimated on basis of records for station above Jumbo Creek and other nearby streams.
176 PAYETTE RIVER BASIN

Cascade Reservoir at Cascade, Idaho

Location. Lat 44°31'30", long 116°03'05", in NE^NE-f sec. 26, T. 14 N. , R. 3 E. , just

 upstream from left abutment of dam on North Fork Payette River, half a mile downstream 

from Willow Creek and three-quarters of a mile northwest of Cascade.

Drainage area. 680 sq mi.

Records available . --January to December 1948 (fragmentary), January 1949 to September 

1957.

Gage. --Staff gage read once daily. Datum of gage is at mean sea level (preliminary, 

unadjusted levels of U. S. Coast and Geodetic Survey).

Extremes . Maximum contents observed during year, 727,000 acre-ft June 10, 11 (elevation,

 4,828.89 ft); minimum observed, 328,400 acre-ft Oct. 25 (elevation, 4,810.86 ft). 

1948-57: Maximum contents observed, that of June 10, 11, 1957; no contents at 

times during March and September 1948.

Remarks . Reservoir is formed by earth-fill dam completed in May 1949. Storage began

 MovT 7, 1947. Capacity, 703,200 acre-ft between elevations 4,766 (4.0 ft above sill 

of outlet tunnel) and 4,828 ft (top of spillway gates). Figures herein show contents 

above elevation 4,766 ft. The Bureau of Reclamation plans to limit withdrawal to 

elevation 4,787.5 ft, retaining 50,000 acre-ft capacity as dead storage. Contents 

table computed from tables furnished by Bureau of Reclamation (revised 1950). Water 

is used for irrigation of lands in the Payette Division of the Boise project and for 

power at Black Canyon powerplant near Emmett.

Cooperation. Gage readings and capacity table furnished by Bureau of Reclamation.

Capacity table (elevation, in feet, and contents, 

in acre-feet)

4,808.0

4,812.0

4,816.0

4,820.0

280,100

348,600

424,600

508,500

4,824.0

4,828.0

4,830.0

601,400

703,200

757,200

Contents, in acre-feet, water year October 1956 to September 1957

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

(t) 

(*)

Oct.

356,300

353,800 

351,300 

348,900 

346,400

344,300 

342,000 

340,000 

337,400 

334,900

334,400 

334,000 

333,300 

33 Z, 300 

331,600

330,900 

330,200 

329,500 

329,100 

329,800

330,500 

329,300 

3Z8.800 

328,600 

328,400

328,800 

330,900 

332,300 

332,600 

334,700 

336,100

4,811.30 

-24,200

Nov.

336,800

337,500 

338,300 

338,600 

338,600

338,400 

338,600 

339,000 

339,300 

339,500

339,700 

340,000 

340,400 

340,700 

341,100

341,100 

341,600 

342,300 

343,100 

343,400

343,800 

344,100 

344,500 

344,800 

345,000

344,800 

344,700 

344,500 

344,700 

344,700

4,911.78 

+8,600

Dec.

344,300

344,300 

344,700 

344,800 

345,000

345,400 

345,700 

345,900 

345,700 

346,100

347,300 

348,600 

350,400 

351,800 

352,900

353,400 

353,600 

353,600 

353,800 

354,000

354,200 

354,300 

354,500 

354,700 

354,900

355,100 

355, ZOO 

355,400 

355,600 

355,800 

356,000

4,812.41 

+11,300

Jan.

356,200

356,300 

356,500 

356,500 

356,700

356,500 

356,200 

356,300 

356,500 

356,700

356,900 

357,100 

357,200 

357,400 

357,600

357,600 

357,400 

357,600 

357,600 

357,800

358,3.00 

358,500 

358,900

358,700 

358,500

358,300 

358,100 

358,300 

358,500 

358,700 

358,900

i812.57 

+2,900

Feb.

359,100

359,400 

359,800 

360,200 

360,500

360,900 

361,200 

361,600 

362,000 

362,200

362,300 

362,700 

362,900 

362,900 

363,100

363,100 

363,300 

362,500 

361,800 

360,900

360,000 

359,100 

363,100 

363,800 

365,800

368,600 

373,300 

375,200

-

4,813.45 

+16,300

Mar.

378,000

379,906 

380,600 

381,800 

382,700

383,700 

384,600 

385,600 

386,500 

388,400

390,300 

293,200 

395,200 

396,100 

397,100

398,500 

399,400 

400,000 

400, 800 

401,400

402,200 

403,100 

403,700 

404 , 300 

404,900

405,500 

406,100 

406,500 

406,900 

407 , 600 

408^800

4,815.20 

+33,600

Apr.

409,200

412,800 

414,100 

415,700

418,700 

420,700 

422,700 

425,600 

427,600

429,600 

433,700 

436,700 

439,700 

444,800

449,900 

453,000 

457,100 

461,200 

465,400

469,600 

474,300 

478,500 

482,800 

484,600

486,700 

489,300 

491,700 

494,300 

497,500

4,819.50 

+88,700

May

499,300

500,800 

503,000 

506,300 

509 , 600

512,500 

515,800 

518,900 

524,100 

529,100

535,400 

542,700 

551,000 

561,900 

573,700

583,200 

589,700 

595,300 

603 , 800

616,100

631,000 

635,500 

637,300 

636,000 

633,500

631,500 

629,800 

628,500 

629,300 

635,500 

643,600

4,825.70 

+146,100

June

653,800

664,000 

675,100 

688,700 

699,200

707,200 

715,200 

720,500 

724,600 

727,000

727,000 

725,100 

722,700 

718,700 

714,900

709,800 

703,200 

702,100 

702,400 

702,400

703,700 

703,700 

703,200 

702,400 

702,400

701,600 

702,400 

703,200 

703,200 

703,200

4,828.00 

+59,600

July

703,200

763 ? 200 

703,200 

703,200 

702,700

702,400 

701,600 

701,100 

700,300 

699,000

697,400 

695,800 

695,000 

693,900 

692,900

691,800 

691,100 

690,300 

689,500 

688,700

687,600 

687,100 

686,100 

685,000 

684,000

681,900 

678,300 

673,900 

669,700 

664,800 

659,700

4,826.33 

-43,500

Aug.

654,600

649,700 

644,600 

639,600 

634,800

629,800 

624,500 

619,300 

614,100 

608,900

603,500 

598,200 

592,800 

587,500 

582,200

577,000 

571,800 

566,300 

561,000 

555,600

550,300 

544,500 

538,800 

533,100 

529,700

525,900 

522,500 

519,600 

516,000 

512,300 

508,500

4,820.00 

-151200

Sept.

505,000

501,000 

497,300 

493,000 

489,700

488,400 

486,700 

483,500 

479,800 

476,600

473,200 

469,800 

466,700 

463,500 

460, 400

457,300 

454,400 

451,500 

449,900 

447,200

445,600 

443,400 

440,900 

438,500 

436,100

433,700 

431,200 

428,800 

426,400 

424,500

4,815.98 

-84,200

Calendar year 1956.................... t +98,ZOO

Water year 1956-57.................... t +64,000

T Elevation, in feet, at end of month, 

t Change in contents, in acre-feet.

Note. Daily contents computed from once-daily staff-gage readings made at 7 a.m. Oct. 1-21, at 

3 p.m. Oct. 22 to Mar. 31, and at 6 a.m. Apr. 1 to Sept. 30.
PAYETTE RIVER BASIN 177

North Fork Payette River at Cascade, Idaho

Location. Lat 44°31' , long 116°02' , in NE£ sec. 36, T. 14 N. , R. 3 E. , on right bank at 

Cascade, 285 ft downstream from Boise Payette Lumber Company (formerly Halleck and 

Howard) milldam, half a mile upstream from Beaver Creek, and l| miles downstream from 

Cascade Dam.

Drainage area.--626 sq mi.

Records available. May 1941 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 4,730 ft (from topographic map of Bureau 

of Reclamation). Prior to Jan. 28, 1947, staff gages at present or nearby sites at 

present datum.

Average discharge.--16 years, 1,030 cfs (745,700 acre-ft per year).

Extremes. Maximum discharge during year, 5,430 cfs June 11 (gage height, 4.74 ft); minimum, 9.5 cfs Apr. 20, 22 (gage height, -0.05 ft).

1941-57: Maximum discharge recorded, 7,320 cfs May 10, 1947 (gage height, 6.29 ft); 

minimum, 2 cfs or less in January 1948 when stage was below intake.

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

Plow regulated by Cascade Reservoir (see preceding page), Payette Lake (see p. 170), 

Lake Fork Reservoir (see p. 173), and occasionally by milldam at Cascade. Diversions 

above station for irrigation of about 37,000 acres.

Rating tables, water year 1956-57 (gage height, In feet, and discharge.

In cubic feet per second) 

(Shifting-control method used May 1 to June 17)

Oct. 1 to Apr. 30 May 1 to Sept. 30

12

20

30

59

104

172

1.0 

1.3 

1.6 

2.0 

2.5 

3.0

264

436

660

1,040

1,720

2,640

0.8 

1.0 

1.3 

1.6 

2.0

154

237

409

653

1,110

2.5 

3.0 

4.0

1,910

2,780

4,060

5,440

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Tota:

Mean

Ac-ft

Oct.

1.960 

1^860

1,750

1,670

1,640

1,580

1,660

1,720

1,640

1,620

1,640

1,560

1,400

1,270

1,150

970

850

786

603

594

603

*611

611

548

490

497

340

202

194

^RT CD4

 Z-l -J

OJ. t

32 , 600

1,052

64,660

Nov.

317 

317

393

463

556

578

311

198

202

235

206

235

244

275

269

269

259

220

264

275

269

215

264

215

206

264

280

264

275

269

8,607

287

17,070

Dec.

306 

306

206

206

*211

206

206

206

206

211

215

211

215

215

211

202 206"

206

206

206

206

206

206

206

206

206

206

206

206

211

206

6,634

214

13,160

Jan.

211

206 20"6

206

206

245

470

225

206

*211

220

225

225

225

225

254

254

259

225

220

249

264

269

264

254

215

a290

a250

a250

a250

a250

7,529

243

14,930

Feb.

3250 

225

a210

a255

a250

264

264

264

225

225

259

230

249

323

323

317

317

424

*534

586

603

611

329

240

264

290

285

280

-

8,891

318

17,640

Mar.

264 

249 -lie ?1O

240

240

244

264

269

259

244

244

240

240

240

240

240

240

244

244

*244

254

244

244

394

408

413

413

432

374

264

8,609

278

17,080

Apr.

122 

26

29

28

35

35

31

34

36

34

34

38

32

45

31

22

22

19

14

51

235

*96

157

230

235

235

235

240

240

454

3,055

102

6,060

May

1,040 

1,150

1,180

1,190

1,170

1,170

1,170

*1,180

1,210

1,220

1,240

1,250

715

513

1,190

1,820

1,990

1,870

164

994

2,910

4,380

4.980

4,980

4,960

4,960

4,960

4,750

3,100

1,340

1,320

66,066

2,131

131,000

June

1,340 

1,360

*785

1,250

2,750

3,340

3,890

4,710

5,190

5,510

5,310

5,190

5,190

5,160

5,100

5,100

3,300

1,530

1,530

1,530

*1,700

1,930

1,890

1,590

1,460

1,140

967

1,100

1,210

1,210

83,062

2,769

164,800

July

,210 

,220

.220

,220

,110

,010

,010

*992

992

992

992

805

653

581

581

572

572

572

563

572

572

572

572

572

1,070

1,500

1,820

2,180

2,430

2,440

2.550

33,697

1,087

66,840

Aug.

2,510 

2,580

2,620

2,530

2,460

2,610

2,670

2,710

2,680

2,750

2,790

2,780

2,770

2,790

2,780

2,840

2,890

2,900

*2,910

2,900

2,880

2,860

2,840

1,800

2.260

1,710

1,680

1,710

1,950

1,950

1,780

77,890

2,513

154,500

Sept.

,680 

,680

,700

,770

,820

,800

,750

,640

,640

,680

,710

,580

,460

,540

,560

* ,480

,570

,540

,320

,300

,260

,250

,300

,360

,540

,520

,320

,260

,220

1,250

44,680

1,489

88,620

Calendar year 1956: Max 4,350 Mln 176 Mean 1,131 Ac-ft 820,800

Water year 1956-57: Max 5,310 Mln 14 Mean 1,045 Ac-ft 756,400

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of supplementary staff-gage readings, 

observer's notes on regulation at Cascade Dam, and records for station near Banks.
178 PAYETTE RIVER BASIN

North Fork Payette River near Banks, Idaho

Location. Lat 44°07', long 116°06' , in SE£ sec. 16, T. 9 N. , R. 3 E., on right bank 40 ft 

downstream from highway bridge, 2g miles north of Banks, and 3 miles upstream from confluence with South Fork.

Drainage area. 933 sq mi.

Records available.--April 1947 to September 1957.

Gage. Water-stage recorder. Datum of gage is 3,081.13 ft above mean sea level, unadjusted.

Average discharge . 10 years, 1,379 cfs (998,400 acre-ft per year).

Extremes. Maximum discharge during year, 6,390 cfs May 24 (gage height, 11.76 ft); minimum, 135 cfs Dec. 9 (gage height, 3.62 ft).

1947-57: Maximum discharge, 8,830 cfs May 11, 1947 (gage height, about 13.5 ft), 

estimated on basis of records for station near Smiths Ferry; minimum recorded, 36 cfs 

Dec. 31, 1947 (gage height, 3.01 ft).

Remarks.--Records excellent except those for periods of ice effect or no gage-height

record, which are good. Flow regulated by Payette Latfe (see p. 170), Lake Fork Reservoir (see p. 173), Cascade Reservoir (see p. 176), and occasionally by milldam at 

Cascade. Many diversions from tributary above station for irrigation.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

5.0 

5.5

7.0

213

348

513

710

940

1,520

2,280

3,180

4,200

5,390

6,730

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Tota]

Mean

Ac-ft

Oct.

2.140 

2,026

1,980

*1,820

1,800

1,730

1,740 

1,850

1,850

1,740

1,850

1,840

1,700

1,510

1.390

1,250

990

990

911

697

732

719

740

732

643

660

798 

492

338" 370 

492

38,574

1,244

76,510

Nov.

482

464

454

569

600

736

69T 

414

*357

351

385

351

401

398

389

408

437

454

336

392

395

389

330

370

315

312

367 

364

367 

373

12,650

422

25,090

Dec.

339 

437

379

318

309

301

295 

240

25T

330

401

454

496

528

45T

398

389

389

370

*336

348

270

304

385

339

309

304 

306

304 

304

330

10,947

353

21,710

Jan.

315 

318

295

b280

b260

b270

b450 

bl25"

b300

b300

b300

b320

342

336

333

295

327

295

345

327

301

364

379

351

345

318

270 

364

360 

364

373

10,217

330

20,270

Feb.

370 

364

330

315

*354

360

354 

364

376

336

324

357

327

367

437

431

428

421

569

689

723

766

771

565

668

1,040

1,470 

1,320

-

15,196

543

30,140

Mar.

1.120 

950

789

689

648

615

600 

762

935

950

803

*719

623

580

588

569

561

546

546

561

588

561

550

553" 535

685

697 

706

753 

877

965

21,629

698

42,900

Apr.

812

577

573

387

681

1,070

896 

872

896

1.020

,080

,180

,270

,510

.710

,330

,250

,210

,130

,090

,160

,410

* ,250

,300

,250

,150

,050 

,000

,100 

,300

32,711

1,090

64 , 880

May

1.700 

2,300

2,500

2,700

2,700

2,570

2,610 

*2,690

2,830

2,960

3,120

3,250

3,700

2,710

3,150

3,710

4,120

4,340

3,580

2,400

3,840

*5,210

6,170

6.350

6,300

6,280

6,250 

6,300

5,880 

3,270

2,860

118,350

3,818

234,700

June

2,840 

2,920

2,910

2,010

3,580

4,360

4,600 

5,250

6,030

6,160

*6.280

6^200

6,090

6,000

5,950

5,860

5,530

2,590

2,250

2,210

2,150

2,310

2,410

2,190

1,880

1,820

1.350 

1,380

1,520 

1,510

108,140

3,605

214,500

July

* ,480 

,460

,440

,420

,390

,210

,170 

,160

1,140

1,120

1,110

1,080

863

753

723

714

702

697

693

689

697

689

681

676

697

1,350

1,710 

1,980

2,460 

2,500

2*570

37,024

1,194

73,440

Aug.

2,600 

2,610

2,700

2,600

2,550

2,600

2,700 

2,750

2,700

2,750

2,850

2,800

2,800

2,800

*2,740

2,760

2,890

2,900

2,940

2,940

2,920

2,900

2,870

2,640

1,930

1,860

1,710 

1.700

1,880 

1,980

1,960

79,330

2,559

157,300

Sept.

,740 

,720

,760

,760

.870

,860

,840 

,7EO

,700

,690

,790

,720

* ,540

,550

,6EO

,560

,460

,400

,380

,370

,340

,320

,350

,400

,410

,400

,390 

,350

,300 

1,320

46,630

1,554

92,490

Calendar year 1956: Max 5,310 Mln 240 Mean 1,528 Ac-ft 1,109,000

Water year 1956-57: Max 6,350 Mln 240 Mean 1,456 Ac-ft 1,054,000

Discharge measurement made on this day. 

_ t ___ *..-, . __.__, on afreoted by loe _

u D bage~u.LBi;imi tje i ej.ai'.LUii a-Lieu i*eu uy j.ue .

Note. No gage-height record Apr. 23 to May 5j Aug. 4-14, Sept. 14-30; dlsch 

basis of 1 discharge measurement, recorded range In stage, weather records, an 

at Cascade and Fayette River near Horseshoe Bend.

iharge estimated on 

id records for station
PAYETTE RIVER BASIN 179

Payette River near Horseshoe Bend, Idaho

Location. Lat 43°56'30", long 116°12'00", in SE£ sec. 15, T. 7 N., R. 2 E., on left bank 

300 ft upstream from bridge on State Highway 15, half a mile downstream from Porter 

Creek, and 2 miles north of Horseshoe Bend.

Drainage area. 2,230 sq mi, approximately.

Records available.--February 1906 to September 1916, July 1919 to September 1957. 

Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 2,625.61 ft above mean sea level, unadjusted. Prior to Nov. 23, 1912, staff gage at site if miles upstream at different 

datum. Nov. 23, 1912, to Apr. 16, 1953, water-stage recorder at site 1,000 ft downstream at datum 2.1 ft lower.

Average discharge.--48 years, 3,208 cfs (2,322,000 acre-ft per year).

Extremes. Maximum discharge during year, 15,400 cfs June 5 (gage height, 12.59 ft); minimum daily, 700 cfs Jan. 19, 27; minimum gage height, 2.41 ft Dec. 9, Jan. 6.

1906-16, 1919-57: Maximum discharge, 22,100 cfs June 9, 1921 (gage height, 9.57 ft, 

site and datum then in use); minimum, 350 cfs Dec. 17, 1935 (gage height, 0.26 ft, 

site and datum then in use), from rating curve extended below 600 cfs.

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

regulated by Deadwood Reservoir (see p. 166), Payette Lake (see p. 170 ), Lake Pork 

Reservoir (see p. 173), and Cascade Reservoir (see p. 176). Diversions from tributaries above station for irrigation of about 50,000 acres.

Cooperation. Water-stage recorder inspected by employee of Idaho Power Company. 

Revisions.--WSP 533: Drainage area.

Rating table, water year 1956-57, except periods of ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(ShiftIng-control method used Nov. 8 to Feb. 24)

2.4 

2.7 

3.0 

4.0 

5.0 

6.0

680

760

860

1,330

1,950

2,800

7.0

8.0

9.0

10.0

11.0

12.5

3,910

5,230

6,760

8,740

11,000

15,000

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

25

26

27 

28

29

30

31

Total

Mean

Ac-ft

Oct.

2,850 

*2,696

2,660

2,490

2,460

2,380

2,360 

2,480 

2,520

2,430

2,680

2,750

2,520

2,270 

2,130

1,970

1,740

1,710

1,760

1,490

1,440

1,430

1,480

1,520

1,400

1,500

1,870 

1,500

1.160

1,366

1,560

62,480

2,015

123,900

Nov.

1,380 

1,260

1,200

1,320

1,360

1,490

1.560 

1,260

1,140

1,140

1,200

1,190

1,260

*1,240 

1,060

1,120

1,330

1,370

1,060

964

1,080

1,120

1,060

1,080

1,020

1,000

1,050 

1,060

1,060 

1,060

35,494

1,183

70,400

Dec.

1,050 

1.050

1,210

1,080

1,060

1,020

988 

904 

853

1,TTO~

1,350

1,670

1,770

1,890 

1,616

1,440

1,340

1,290

1,250

 1,110

1,060

1,020

984

1,290

1,110

960

936 

996

1,020 

1,020

1,080

36,521

1,178

72,440

Jan.

1,060 

1,040

1,030

884

832

811

*880 

1,550 

1,170

1,010

988

1,120

1,140

1,090 

1,080

940

840

750

'5o~0~ 700

1,000

1,000

1,000

1,000

920

800

700 

850

860 

880

900

29,525

952

58,560

Feb.

960 

980

980

970

970

960

960 

970 

980

930

*900

5S7J

920

980 

1,080

1,080

1,070

1,060

1,290

1,470

1,520

1,540

1,750

2,150

3,320

*4,320

4,960 

4,136

-

44, 130

1,576

87,530

Mar.

3.460 

2,986

2,580

2,300

2,250

2,110

2,090 

2,450 

2,900

3,030

2,750

3,100

2,630

2,340

2,270

2,220

2,330

2,200

2,240

2,330

2,470

2,310

2,150

2.060

2^110

2,180

2,150 

2,160

2,330 

2,800

3,230

76,510

2,468

151,800

Apr.

*3,040 

2,660

2.600

2,666

2,860

4,200

3,810 

3,610 

3,630

3,980

4,220

4,530

4,730

5,130 

5,980

5,310

5,050

4,840

4,640

4,660

4,910

5,290

*5,400

5,540

5,020

4,440

4,100 

4,230

5,080 

6.270

132,360

4,412

262,500

May

7.200 

*8,456

9,060

8,870

8,660

8,680

9,780 

10,400 

10,800

11,200

11,000

11,300

12,000

11,300 

11,400

11,600

12,200

13,000

14,000

11,700

11,500

12, 100

*12,400

12,400

12,300

12,500

13,000 

13,500

14,600 

12,500

12 , 300

351,700

11,350

697,600

June

12,600 

13 , 100

* 13, 700

13,200

14.700

14,500

13,900 

14,100 

14,500

13,800

13,500

13,200

12,800

12,200

11,500

10,800

10,200

7,020

6,490

6,690

6,680

6,540

6,410

6,220

5,980

5,810

5,260 

5,316

5,370 

5,260

301,340

10,040

597,700

July

*5,160 

5,626

4,750

4,540

4,320

4,020

4,040 

3,980 

3,890

3,780

3,560

3,570

3,500

3,460 

5,410

3,480

3,510

3,500

3,500

3,470

3,530

3,500

3,540

3,540

3,550

3,750

3,680 

3,560

3,610 

3,550

3,570

117,840

3,801

233,700

Aug.

3,570 

3,540

3,620

3,560

3,380

3,450

3,570 

3,590

3,540

3,500

3,590

3,590

3,550

3,560 

*3,550

3,540

3,660

3,650

5.690

3,666

3,620

3,590

3,550

3,550

5,010

3,610

3,410

3,670

3,690 

3,690

3,680

110,430

3,562

219,000

Sept.

5.470 

S,4l6

3,440

3,400

3,470

3,460

3,450 

3,310 

3,280

3,260

3,370

3,300

*3,130

3,080 

3,180

3,130

3,020

2,980

3,040

2,990

2,930

2,900

2,870

2,930

2,930

2,910

2,880 

2,850

2,780 

2,750

93,900

3,130

186,200

Calendar year 1956: Max 15,200 Mln 853 Mean 4,344 Ac-ft 3,153,000

Water year 1956-57; Max 14,700 Mln 700 Mean 3,814 Ac-ft 2,761,000

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Jan. 7, 8, Jan. 16 to Feb. 18.
180 PAYETTE RIVER BASIN

Payette River near Emmett, Idaho

Location --Lat 43056', long 116°27' , in sec. 22, T. 7 N., R. 1 W., on right bank threeeighths of a mile downstream from Black Canyon Dam and 5 miles northeast of Emmett.

Drainage area.--2,680 sq mi, approximately.

Records available. June 1925 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 2,400 ft (from topographic map).

Average discharge.--32 years, 3,010 cfs (2,179,000 acre-ft per year).

Extremes. Maximum discharge during year, 18,200 cfs May 19 (gage height, 11.31 ft); mlnimum, 0.7 cfs Jan. 7 (gage height, -1.49 ft), when gates in dam were closed; minimum 

daily, 0.7 cfs Jan. 7.

1925-57: Maximum discharge, 28,800 cfs May 1, 1938; maximum gage height, 12.98 ft 

Dec. 22, 1955; minimum daily discharge, that of Jan. 7, 1957.

Remarks.--Records excellent except those below 100 cfs, which are fair. Diversions above 

station for irrigation of about 135,000 acres. Flow regulated by diversion at and 

operation of gates in Black Canyon Dam and by Cascade Reservoir (see p. 176), Deadwood 

Reservoir (see p. 166), Payette Lake (see p. 170), and Lake Fork Reservoir (see p. 173).

Cooperation. Gage-height record collected in cooperation with Bureau of Reclamation. 

Revisions (water years).--WSP 1153: 1946(m) , 1948(m).

Eating table, water year 1956-57 (gage height, in feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Feb. 26 to June 22)

-1.5

-1.3

-1.0

-.7

-.4

0.7

1.6

4.3

9.1

18

-0.1 

.2

1.0 

1.4

55

105

175

280

1.8 

2.2 

2.6 

3.0 

4.0

430

705

1,090

1,540

2,770

5.0 

6.0 

7.0 

9.0 

11.0

4,150

5,800

7,710

12,100

17,200

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

5

4

5

6

7

8

9

10

11

12

15

14 

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

50

31

Total

Mean

Ac-ft

Oct.

2,060

1,890

1,900

1,960

1,820

1,780

1.660

1,800

1,900

1,820

2,080

2,180

2,090

1,860 

1,900

2,010

1,760

1,670

1,940

1,860

1,600

1,610

1,670

1,780

1,860

1,720

2,180

1,900

»1.480

1,610

2,220

57,570

1,857

114,200

Nov.

1,820

1,540

1,330

1,300

1,450

1,530

1.840

1.790

1,340

1,510

1,420

1,480

1,490

1,490 

1,570

1,290

1,570

1,670

1,090

1,010

1,080

1,120

1,010

1,120

1,110

*904 9"97

1,020

1,060

1,050

59,401

1,313

78,150

Dec.

1,220

1,160

1,260

1,290

1,290

1,670

1,540

1.970

1,820

1,240

967

1,820

1,860

1,860 

1,940

1,900

1,850

1,730

1,370

1,740

1,100

1,640

1,450

889

1,510

1,060

657

147

1,010

1,480

887

44,027

1,420

87,330

Jan.

1.560

533

a. 9

*.9

a. 8

a. 8

*.7

244

1,520

1,110

868

1,120

1,160

1,010 

1,220

914

826

722

602

918

1,020

1,040

1,000

1,060

973

846

1,090

938

939

1,000

954

24,591.1

793

48,780

Feb.

1,090

1,120

960

1,040

980

1,040

950

991

1,040

1,020

*980

896

862

910" 853 

1,090

1,190

1,200

1,190

1,260

1,340

1,420

1,770

4,280

6,860

7,710

8.840

6,690

-

59,572

2,128

118,200

Mar.

5,300

4,480

5,720

5,290

5,620

5,220

5,290

3,470

3,660

4,280

3,890

5,650

4,150

3,330 

3,270

3,220

3,440

3,270

*3,330

3,150

2,740

1,780

1,6SO

1,910

3,050

3,200

3,020

3,020

3,190

3,930

4,980

107,700

3,474

213,600

Apr.

4,610

3,960

3,790

3,680

3,850

5,570

5,070

4,710

4,660

4,960

5,240

5,490

5,640

5,930 

7.270

6,290

5,850

*5,600

5,320

5,270

5,550

5,910

5,910

5,890

5,020

4,240

3,830

3,820

4,710

6,050

155,670

5,122

304,800

May

7.150

8.360

8,950

8,820

8,680

8,470

9,530

10,300

*10,600

11,200

11 , 200

11,700

13,000

15,000 

15,200

15,100

13,500

14,100

16.500

13,700

12,600

12,800

13,100

13,000

12,700

12,900

13,200

*14,OOO

14,900

12, 900

12, 100

369,260

11,910

752,400

June

12,500

12,800

13,500

13,000

14,100

14,100

15 , 500

13 , 600

14,100

13,200

12 , 800

12,500

12,100

11,400 

10,700

10,000

9,400

6,460

5,460

5,660

*5,620

5,410

5,240

5,020

4,720

4,500

3,960

3,920

3,960

3,850

277,060

9,235

549,500

July

5,680

3,480

3,170

2,950

*2,690

2,380

2,330

2,350

2,210

2,140

1,900

1,860

1,840

1,790 

1,680

1,760

1,770

1,780

1,770

1,830

1,780

1,760

1,830

1,760

1,830

1,940

1,950

1,790

1,880

1,830

1,830

65,520

2,114

130,000

Aug.

1,850

1,790

1,890

1,850

*1,740

1,680

1-, 830

1,910

1,900

1,840

1,900

1,910

1,900

1,860 

1,860

1,850

1,960

1,970

2,020

1,970

1,950

1,900

1,900

1,880

1,440

2,010

1,760

2,020

2,100

2,090

2,140

58,670

1,893

116,400

Sept.

1,970

1,840

1,940

*1,860

1,900

1,920

1,970

1,890

1,850

1,900

2,010

2,010

1,890

1.850 

1,900

1,960

1,900

1,900

1,920

1,960

1,950

1,900

1,890

1,920

1,970

1,960

1,970

1,970

1,940

1 j 880

57,670

1,922

114,400

Calendar year 1956: Max 14,700 Mln 657 Mean 3,970 Ac-ft 2,882,000

Water year 1956-57: Max 16,500 Mln 0.7 Mean 3,602 Ac-ft 2,608,000

* Discharge measurement made on this day.

a Stage below Intakes; discharge estimated on basis of 3 discharge measurements, recorder graph, 

and records for station near Payette.
PAYETTE RIVER BASIN 181

Payette River near Payette, Idaho

Location. Lat 44°02'30", long 116°55'30", in SW£ see. 10, T. 8 N. , R. 5 W. , on right bank 

at highway bridge, 1-jj miles south of Payette.

Drainage area. 3,240 sq ml, approximately.

Records available.--August 1935 to September 1957. Records for January 1895 to July 1897 

(published as "at Payette" in 18th and 19th Annual Reports) found to be unreliable and 

should not be used.

Gage. Water-stage recorder. Datum of gage is 2,138.44 ft above mean sea level, unadjusted. Aug. 1, 1935, to Aug. 7, 1939, wire-weight gage at site 50 ft downstream at 

present datum.

Average discharge.--22 years, 3,169 cfs (2,294,000 acre-ft per year).

Extremes.--Maximum discharge during year, 17,700 cfs May 19 (gage height, 11.53 ft); minimum, 227 cfs Jan. 9 (gage height, 3.70 ft); minimum daily, 243 cfs Jan. 7.

1935-57: Maximum discharge, 23,400 cfs May 2, 1938; maximum gage height, 12.75 ft 

Dec. 23, 1955; minimum discharge, 180 cfs Oct. 13, 20, 1935 (gage height, 2.04 ft); 

minimum daily, 200 cfs Oct. 5, 1935.

Remarks.--Records excellent except those for period of ice effect, which are good. Diversions above station for irrigation of about 188,000 acres. Flow regulated by Black 

Canyon Dam and reservoirs on tributary streams.

Revisions (water years). See Records available. WSP 1397: 1949(m) , 1952, 1953-54(m).

Rating table, water year 1956-57, except period of ice effect (gage

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Mar. 1 to May 2, June 19 to Sept. 30)

3.7 227

4.0 368

4.5 740

5.0 1,240

5.5 1,890

6.0 2,710

6.5 3,690

7.0 4,810

8.0 7,170

9.0 9,810

10.0 12,800

11.5 17,600

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

ia

19

20

21

22

23

24

25

26 

27

28

29

30

31

TotaJ

Mean

Ac-ft

Oct.

2,020 

2,060

1,890

1,980 

1,880

1,830

1,780

1,780

1,860

1,960

2,120

2,640

2,670

2,300

2,250

2,310

2,100

1,980

2,250

2,530

2,140

2,070

2,070

2,200

2,060

2,600 

2,660

2,800

*2,020

2,100

2,930

67,840

2,188

134,600

Nov.

2,510 

2,150

1,880

1,750 

1,850

1,830

2,170

2,260

1,860

1,760

1,760

1,850

1,830

1,860

1,780

1,620

1,700

2,060

1,560

1,420

1,330

1,590

1,380

1,470

1,540

1,280 

1,340

1,390

1,400

1,400

51,580

1,719

102,300

Dec.

1,500 

1,660

1,360

1,640 

1,630

1,970

*1,930

2,040

2,180

1,840

1,440

2,140

2^330

2,280

2,300

2,330

2,260

2,120

1,960

1,920

1,770

1,660

1,820

1,530

1,500

1,650 

1,270

927

1,1:50"

1,450

1,520

55,207

1,781

109,500

Jan.

1,370 

1,410

379

*281 

295

247

243

251

826

1,470

1,160

1,170

1,370

1,320

1,360

1,230

1,140

1,010

1,010

1,020

1,300

1,360

1,340

1,350

1,260

1,180 

1,400

1,240

1,240

1,300

1,230

32,762

1,057

64,980

Feb.

1,410 

1,450

1,250

1,350 

1,260

1,330

1,250

1,290

1,340

1,310

1,240

1,150

1,130

*1,130

1,120

1,350

1,580

1,460

1,460

1,510

1,510

1,610

2,570

8,510

*10,200

9,070 

10,600

8,170

---__-.

78,610

2,808

155,900

Mar.

6,500 

5,500

4,650

4,020 

4,150

3,930

3,980

4,000

4,170

4,720

4,490

6,590

5,780

4,240

3,820

3,760

3,910

3,840

*3,580

3,690

3,540

2,120

2,090

2,100

2,550

3,710 

3,240

3,200

3,280

4,000

4,880

124,030

4,001

246,000

Apr.

5,780 

4,580

4,090

4,040 

4,060

5,520

5,730

5,110

4,880

5,060

5,410

5,660

5,900

5,970

7,320

6,810

6,210

*5,990

5,620

5,550

5,680

5,990

5,900

5,950

5,780

5,110 

4,580

4,280

4,560

5,550

162,670

5,422

322,700

May

6,450 

7,340

8,270

8,720 

8,560

8,070

8,770

9,520

*9,960

10,700

11,000

11,300

12,300

13,100

13,500

13,200

13,500

13 , 400

16,700

14,900

13,000

13,000

13,200

13,200

12,800

12,700 

12,800

12,100

13,600

13,200

11,400

361,260

11,650

716,500

June

11,500 

11,800

12,400

12,300 

12,700

13,200

12,900

12,600

13,300

12,800

12,300

12,000

11,700

*11,100

10,300

9,550

8,990

7,050

5,020

5,020

5,180

4,920

4,760

4,530

4,280

4,020 

3,630

3,500

3,380

3,320

259,850

8,662

515,400

July

3,200 

3,O40

2,780

2,460 

2,310

2,000

1,740

*1,740

1,640

1,540

1,380

1,280

1,320

1,260

1,200

1,210

1,250

1,320

1,320

1,320

1,350

1,370

1,370

1,360

1,380

1,420 

1,520

1,480

1,440

1,460

1,300

50,760

1,637

100,700

Aug.

1,400 

1,400

1,420

1,460 

*1,410

1,240

1,340

1,420

1,440

1,410

1,360

1,460

1,410

1,370

1,380

1,400

1,430

1,560

1,650

1,610

1,600

1,560

1,570

1,530

1,520

1,360 

1,560

1,520

1,720

1,880

1,900

46,290

1,493

91,810

Sept.

1,940 

1,740

1,720

1,830 

1,760

*1,830

1,860

1,830

1,780

1,820

1,890

1,960

1,900

1,790

1,810

1,920

1,880

1,830

1,880

1,940

1,940

1,880

1,890

1,890

1,900

1,900 

1,940

1,940

1,900

1,860

55,970

1,866

111,000

Calendar year 1956: Max 14,600 Min 927 Mean 3,969 Ac-ft 2,881,000

Water year 1956-57: Max 16,700 Min 243 Mean 3,690 Ac-ft 2,671,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Jan. 27 to Feb. 13.
182 WEISER RIVER BASIN

Weiser River at Tamarack, Idaho

Location. Lat 44°57', long 116°23', in NW^NEi sec. 31, T. 19 N. R. 1 E., on left bank 

43 ft upstream from railroad bridge, 0.65 mile south of Tamarack, and If miles up 

upstream from Beaver Creek.

Drainage area. 36.5 sq mi.

Records available. September 1936 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 4,080 ft (by barometer). Prior to 

Oct. 8, 1949, staff gage at site a quarter of a mile upstream at different datum.

Average discharge. 21 years, 44.3 cfs (32,070 acre-ft per year).

Extremes. Maximum discharge during year, 434 cfs Apr. 14 (gage height, 4.60 ft); minimum, 1.0 cfs Feb. 12 (gage height, 0.95 ft).

1936-57: Maximum discharge, 1,320 cfs Dec. 22, 1955 (gage height, 7.17 ft), from 

rating curve extended above 600 cfs on basis of slope-area determination of peak flow; 

minimum, 0.7 cfs Oct. 1, 1955; minimum gage height, that of Feb. 12, 1957.

Remarks. Records good except those for periods of ice effect or shifting control, which 

are fair. No diversion above station. Diurnal fluctuation caused by millpond at 

Tamarack. Small flow from Boulder Creek in Salmon River basin enters Weiser River 

above station through transmountain diversion during late irrigation season.

Rating table, water year 1956-57, except periods of ice effect or shifting 

control (gage height, In feet, and discharge, In cubic feet per second)

1.2

1.3

1.4 

1.6 

1.9 

2.2 54

Z.6 

3.0 

3.5 

4.0 

5.0

92

152

250

350

567

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

6.8

6.8

6.8

6.8

6.6

6.6 

6.8

6.8

6.8

7.4

11

14

1?

11

8.5

8.0

7.7

7.4

8.5

8.0

7.4

7.4

8.0

8.2

8-0

9.5

14

12

9.2

13

13

275.0

8.87

545

Nov.

10

9.5

9.2

9.5

8.5

9.9 

9.9

10

*9.5

9.5

10

11

12

TT

8.8

9.9

10

9.5

8.2

8.2

8.2

8.2

8.8

7.4

7.7

7.7

8.0

6.6 6~^

7.1

270.6

9.02

537

Dec.

6.6

6.6

7.1

7.4

7.4

7.7 

7.7

b6.8

7.1

7.7

8.8

9.9

15

15

13

12

10

*11

10

9.9

9.5

9.2

9.2

9.2

8.8

8.5

8.0

7.4

7.1

7.1

7.1

277.8

8.96

551

Calendar year 1956: Max 474

Jan.

7.4

7.4

7.4

7.4

b6.9

6.8 

7.4

7.

7.

7.

7.

7.

7.

7.

7.

b7.0

b6.5

b6.0

6.8

6.8

b6. 5

6.8

6.6

*b6.5

b6.2

b5.5

b5.0 b8"75~

b6.0

b6.0

b6 .0

208.7

6.73

414

Feb.

b6,2

b6.2

6.6

6,6

6.6

b6.0 

b5.8

b5.6

b6.0

b6.0

b5.8

b5.6

4.7

47?

5.1

5.1

5.1

5.3

5.3

5.3

5.3

5.6

8.2

18

41

101

206

1ST

682.9

24.4

1,350

Mar.

*137

99

85

74

67

59

S5

82

92

100

91

88

77

69

67

67

66

66

74

85

97

86

80

78

83

87

91

94

134

196

2Q4_

2,840

9.16

5,630

Apr.

177

173

177

*163

214

242

220

216

226

248

256

336

367

392

T75

304

262

239

229

218

254

268

268

248

200

158

128

T36~ 118

180

6,992

233

13,870

May

208

232

270 250"

222

*193 

169

162

198

188

171

162

177

179

158

132

114

118

128

115

102

94

90

78

71

64

58

52

50

*48

43

4,296

139

8,520

June

38

36

33

30

28

26

26

34

32

26

24

22

22

22

22

20

18

16

*16

17

15

14

13

12

12

11

12

11

11

11

630

21.0

1,250

July

11

9.9

10

9.9

13

ft!

7.7

8.0

7.4

8.0

9.5

9.5

9.5

9.5

9.2

8.8

*10

8.4

9.2

8.8

8.5

8.8

8.2

8.2

7.

268.0

8.65

532

Aug.

7.4

7.1

6.8

6.6

6.3

6.8 

7.4

6.6

6.6

6.3

6.0

6.0

5.8

5.8

5. ,6

5.6

5.6

5.6

5.6

5.6

5.8

*6.0

6.6

6.3

6.3

6.6

6.6

6.6

7.7

e Q o ,o

6 .3

195.7

6.31

388

Sept.

6.8

6.6

7.0

5.1

7.1

4.4

5.6

5.1

4.4

4.9

5.6

5.3

5.1

5.1

5.3

4.9

4.7

5.1

5.6

*5.6

5.3

5.1

5.1

5.1

4.9

6.2

5.1

4.9

4.7

5.5

161.2

5.37

320

Mln 6.0 Mean 52.4 Ac-ft 38,040

Water year 1956-57: Max 392 Mln 4.4 Mean 46.8 Ac-ft 33,910

Peak discharge (base, 280 cfs).--Apr. 14 (8 to 11 p.m.) 434 cfs (4.60 ft); May 3 (4:30 a.m.) Z88 cfs

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note.--Shifting-control method used Feb. 26 to Mar. 10, Apr. IE-19.
WEISER RIVER BASIN 183

Lost Valley Reservoir near Tamarack, Idaho

Location. Lat 44°57'30", long 116 0 28'00", 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 sq mi.

Records available.--May to September 1924, May 1926 to September 1957 (fragmentary).

Gage.--Staff gage. Datum of gage is 4,748.8 ft above mean sea level (river-profile 

survey). Prior to May 1926, at datum 1.4 ft higher.

Extremes. Maximum gage height observed during year, 26.15 ft June 23; minimum observed, 

 IT755 ft Oct. 15.

1924, 1926-57: Maximum gage height observed, 26.90 ft May 14, 1940; no storage at 

times during several years.

Remarks. Reservoir is formed by earth dam completed in 1910 and raised 6 ft in 1929. 

Permanent spillway crest is at gage height 22.26 ft; flashboard structure built in 

1938 to permit storage to gage height 25.9 ft. Bottom of outlet tunnel is at gage 

height 1.46 ft, but natural flow through reservoir limits withdrawal below about gage 

height 2.8 ft. Water is used for irrigation of lands in Welser River basin.

Cooperation. Twenty-three gage readings furnished by Lost Valley Reservoir Co. 

Revisions.--WSP 833: Drainage area.

Daily gage height, in feet, water year October 1956 to September 1957

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.

11.65

Nov. Dec.

11.80

Jan.

11.94

Feb.

12.71

-

Mar.

16.93

Apr.

23.90

May

-

-

-

-

-

_

24.10

-

-

-

-

-

-

-

-

-

23.85

-

-

-

-

-

-

-

-

23.00

-

-

-

23.43

June

-

-

24.40

-

-

_

-

25.30

-

-

-

-

-

25.90

-

-

26.04

-

-

-

-

26.15

-

-

_

-

-

-

26.10

July

26.10

-

-

-

26.14

_

-

-

-

25.60

-

-

-

-

25.80

-

-

-

24.40

-

-

-

-

-

22.40

-

-

-

-

22.50

Aug.

-

-

-

-

21.48

_

-

-

20.3

-

-

-

-

-

-

-

-

-

-

-

-

-

18.25

-

-

17.61

-

-

-

-

-

Sept.

-

16.25

-

-

-

15.77

-

-

-

-

15.17

-

14.91

-

-

" .

14.49

-

-

-

14.04

-

13.79

-

-

-

-

-

12.08

-

Note. Gage-height readings obtained only on days listed above.
184 WEISER RIVER BASIN

Lost Creek near Tamarack, Idaho

Location. Lat 44°57', long 116°28', in SE^-NW^ sec. 28, T. 19 N. , R. 1 W. , on right bank 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 sq mi.

Records available . January 1910 to August 1914, May 1920 to September 1921, May 1924 to 

November 1929 (fragmentary); March 1930 to September 1957.

Gage. Water-stage recorder. Datum of gage is 4,729.6 ft above mean sea level (riverprofile survey). Prior to Apr. 1, 1912, staff gage at same datum.

Average discharge. 27 years ( 1930-57 ), 39.2 cfs (28,380 acre-ft per year).

Extremes. Maximum discharge during year, 352 cfs May 4 (gage height, 3.06 ft); minimum 

daily, 0.1 cfs Nov. 8 to Dec. 30; minimum gage height recorded, 0.50 ft many days 

during November.

1910-14, 1920-21, 1924-57: Maximum discharge, 688 cfs May 17, 18, 1921 (gage height, 

4.29 ft); practically no flow at times when gates in dam were closed.

Remarks. Records good except those below 10 cfs, which are fair, and those for periods of 

no gage-height record, which are poor. No diversion between reservoir and station; 

practically entire flow diverted below station during irrigation season. Plow regulated 

since 1910 by Lost Valley Reservoir (see preceding page).

Cooperation. Water-stage recorder inspected occasionally by employees of Lost Valley 

Reservoir Co.

Revisions. WSP 833: Drainage area.

Rating table, water year 1956-57 (gage height, In feet, and 

discharge, In cubic feet per second)

.9 

1.0

0.1 

.2

1.6

3.2

5.4

8.5

18

32

2.0 

2.3 

2.6 

2.9 

3.2

63

112

190

300

420

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

43

4?

42

41

41

41

41

41

41

41

41

41

41

41

41

40

39

38

38

38

38

38

38

37

3_6

36

36

36

36

36 

36

1,215

39.2

2,410

Nov.

36

3T

36

35

35

34

27

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

241.3

8.O4

479

Dec.

0.1

!l

.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 

3_

6.0

0.19

12

Jan.

> 6.0

*6.3

> 6.5

197.8

6.38

392

Feb.

> 7.0

*7.3

7.3

7.3

7.3

7.3

7.3

7.6

7.6 7.6-

199.6

7.13

396

Mar.

776" 7.6

7.6

7.6

7.6

7.6

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.6

7.9

7.9

7.9

*7.9

7.9

7.9

7.9

7.9

7.9

8.2

8T2

8.2

8.2 

8.2

244.3

7.88

485

Apr.

8.2

FT?

8.2

8.2

8.5

8.5

8.9

8.9

8.9

8.9

9.3

9.3

9.7

10

21

49

71

90

106

116

137

155

172

181

175

163

144

165

218 215"

2,304.7

76.8

4,570

May

236

268

320

348

332

304

*280

272

296

320

328

336

340

340

312

280

246

232

246

256

242

222

204

194

181

140

46

61

71

*65

1.9

7,319.9

236

14,520

June

1.8

1.6

1.8

1.4

1.4

1.2

1.0

.8

.7

.6

.6

1.0

2.3

5.2

7.0

8.2

9.3

10

12

12

13

14

14

15

IF

14

14

14

14

13

219.9

7.33

436

July

7.9

E7?

8.5

8.5

27

50

48

46

46

46

46

45

45

45

52

6363"

63

*63

63

63

63

63

63

63

63

62

62

62

62 

61

1,531.1

49.4

3,040

Aug.

61

61

61

61

61

58

58

58

58

58

58

57

57

57

56

56

56

56

61

66

66

66

*66

66

64

64

64

64

63

63 

63

1,884

60.8

3,740

Sept.

48" 62

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

35

35

*35

35

35

35

34

34

34

34

33

J52

1.097

36.6

2,180

Calendar year 1956 : Max 388 Mln 0.1 Mean 52.9 Ac-ft 38,420

Water year 1956-57 : Max 348 Mln O.I Mean 45.1 Ac-ft 32,660

* Discharge measurement made on this day.

Note.--No gage-height record Dec. 2 to Jan. 7, Jan. 9 to Feb. 19; discharge estimated on basis of 

weather records, reported gate change at Lost Valley Reservoir, 1 discharge measurement, and records 

for nearby streams.
WEISER RIVER BASIN 185

Weiser River near Cambridge, Idaho

Location. Lat 44°35' , long 116°38', in NEir sec. 1, T. 14 N., R. 3 W., on left bank 

100 ft upstream from road bridge, 2-j miles northeast of Cambridge, and 2-J miles 

upstream from Rush Creek.

Drainage area. 605 sq mi.

Records available.--March 1939 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 2,660 ft (by barometer). Prior to

A~pr. 23, 1939, staff gage and Apr. 24, 1939, to Dec. 21, 1955, water-stage recorder at 

site 35 ft downstream from road bridge at different datum. Dec. 22, 1955, to Aug. 28, 

1956, wire-weight gage at bridge 2§ miles downstream at different datum.

Average discharge. 18 years, 670 cfs (485,100 acre-ft per year).

Extremes.--Maximum discharge during year, 7,600 cfs Feb. 26 (gage height, 9.73 ft); minimum, 40 cfs July 30 (gage height, 1.51 ft).

1939-57: Maximum discharge, 10,100 cfs Dec. 22, 1955 (gage height, 13.9 ft, from 

floodmark, site and datum then in use); minimum, 23 cfs Oct. 1, 1943.

Remarks. Records excellent except those for periods of ice effect, which are fair. Plow 

partly regulated by Lost Valley Reservoir (see p. 183) and other reservoirs. Diversions above station for irrigation of about 9,200 acres.

Rating tables, water year 1956-57, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting control method used Mar. 1-28)

Oct. 1 to Feb. 28 Mar. 1 to Sept. 30

2.2

2.4 

2.6 

3.0 

3.5 

4.0

89

141

212

405

700

1,060

5.0 

6.0 

7.0 

8.0 

9.0

1,910

2,850

3,910

5,100

6,450

1.5 

1.7 

2.0 

2.5 

3.0

38

78

170

380

650

4.0 1,330

5.0 2,180

6.0 3,210

7.0 4,360

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

94

94

94

96 

99

94

94

94

94

103

167

225

238

178

154

141

138

138

164

148

138

133

138

151

148

204

430

291

229 

1.070

700

6,279

203

12,450

Nov.

422

320

291

273 

251

242

*255

234

204

201

201

201

212

216

174

193

225

225

161

151

174

164

158

154

148

141

b!36

127

130 

124

6,108

204

12,120

Dec.

113

127

135

138 

133

133

119

b96

b!20

141

185

350

721

F9T

454

551

449

460

*410

350

345

b300

320

278

b230

b220

b200

212

189 

b!80

b!70

8,422

272

16,700

Jan.

b!60

blSO

144

b!40 

blSO

b!60

178

blSO

b!70

b!40

blSO

b!60

171

174

161

108

blOO

91

ITT

133

148

151

148

148

*133

119

111

124

130 

130

133

4,406

142

8,740

Feb.

135

135

135

133 

135

133

127

124

133

130

127

133

130

133

144

144

141

148

154

154

144

144

182

984

2,810

5,550

5, ISO

*3,150

-

20,622

736

40,900

Mar.

2,300

1,740

1,350

1,190 

1,550

1,490

2,000

2,360

2,440

2,080

1,710

2,180

1,520

1,250

1,190

1,420

1,520

1,320

1,320

1,320

1,420

1,190

1,030

935

984

977

928

921

1,376"

1,570

2,040

46,315

1,494

91,860

Apr.

1,790

1,510

*1,430

1,510 

1,460

1,910

1,630

1,510

1,500

1,620

1,660

2,500

3,330

3,360

5,450

2,810

2,400

2,150

2,040

1,950

2,160

2,290

2,290

2,200

1,930

1,630

1,450

1,430

1,790

2,270

60,760

2,025

120,500

May

2,600

2,810

2,810

*2,770 

2,720

2,490

2,490

2,650

3,230

3,240

3,290

3,540

3,550

3,440

3,140

2,920

2,780

3,250

4',050

3,320

2,850

2,530

2,270

2,100

2,040

1,960

*1,940

1,990

1,910

1,860

86,820

2,801

172,200

June

,810

,890

,890

,730 

,660

,550

,330

,510

,390

,130

1,030

949

879

830

764

*686

632

602

578

608

560

510

465

450

420

405

395

375

352

324

27,704

923

54,950

July

298

272

251

231 

211

207

223

200

185

174

163

156

146

143

133

139

136

*136

133

130

124

127

124

114

111

114

97

97

100

89

tl3_

4,847

156

9,610

Aug.

78

78

76

74 

74

76

83

ST

81

78

78

78

76

71

69

67

6363"

65

67

71

67

71

*71

71

71

74

74

76

76

78

2,276

73.4

4,510

Sept.

78

78

74

65 

60

56

56

54

52

54

56

56

56

56

56

56

56

56

65

65

*65

63

63

60

60

63

65

63

65

67

1,839

61.3

3,650

Calendar year 1956: Max 3,320 Mln 60 Mean 721 Ac-ft 523,700

Water year 1956-57: Max 5,350 Mln 52 Mean 757 Ac-ft 548,200

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

503667 O - 59 - 13
186 WEISER RIVER BASIN

Pine Creek near Cambridge, Idaho

Location. Lat 44°35' , long 116°44' , in SW£ sec. 32, T. 15 N. , R. 3 W. , on right bank 

300 ft upstream from West Pork and 3.2 miles northwest of Cambridge.

Drainage area. 54 sq mi, approximately.

Records available . April 1938 to September 1957.

Gage.--Staff gage read twice daily. Altitude of gage is 2,800 ft (by barometer). Prior 

To Mar. 7, 1951, staff gages at nearby sites at present datum.

Average discharge. 19 years, 39.1 cfs (28,310 acre-ft per year).

Extremes. Maximum discharge during year, 510 cfs Feb. 26 (gage height, 4.17 ft, from 

graph based on gage readings); minimum observed, 1.5 cfs Aug. 22; minimum gage height, 

1.10 ft Aug. 1, 2, 4, 22.

1938-57: Maximum discharge observed, that of Feb. 26, 1957, but may have been more 

when gage was overtopped June 3, 1948; minimum observed, 0.7 cfs Aug. 3, 1949, 

July 13, 14, 1954; minimum gage height observed, 0.29 ft Aug. 5, 1952.

Remarks.--Records fair except those for periods of doubtful gage-height record or ice 

effect, which are poor. Several diversions above station for irrigation.

Rating table, water year 1956-57, except periods of loe effect (gage

height, In feet, and discharge, In cubic feet per second)

[Shifting-control method used Feb. 21-26, May 25-29)

1.1

1.2

1.3 

1.5 

1.7

1.2 

2.7 

5.2

2.0 

2.5 

3.0 

3.5

52

122

205

306

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

3.0

372

3.7

4.0

3.7

4.2

4.7

4.7

5.9

8.5

12

14

11

10

9.3

8.5

8.5

8.5

8.5

8.5

8.5

8.2

9.3

9.3

9.3

13

15

14

12

30 

T6

289.0

9.32

573

Nov.

14

12

12

14

14

13

*14

14

13

14

14

14

14

14

15

16

T5

16

15

14

14

12

12

12

12

12

12

12

12

11

402

13.4

797

Dec.

11

11

11

11

11

10

9.5

9.0

ID- 8.0

12

16

TI

13

13

12

13

13

*13

13

13

13

14

14

13

11

11

11

12

11

11

367.5

11.9

729

Jan.

11

TT

10

9.5

9.0

9.0

9.5

9.5

9.0

9.0

9.0

10

10

11

10

10

9.0

8.5

9.5

10

10

9.5

9.5

9.0

*9.0

9.0

8.5

8.0

S75

9.0

10

293.5

9.47

582

Feb.

11

11

11

10

To

10

10

11

12

12

11

12

12

12

12

12

12

12

12

12

12

14

21

42

*78

286

*T55

151

1,016

36.3

2,020

Mar.

114

91

82

72

85

77

102

130

1315

114

98

101

85

75

75

79

79

79

81

81

77

74

70

69

66

61

61

60

66

65

86

2,585

83.4

5,130

Apr.

72

66

65

*65

72

70

69

65

65

66

66

98

na- 119

ns

101

96

89

89

84

92

85

84

82

81

77

74

74

89

98

2,485

82.8

4,930

May

113

*116

107

107

102

98

1T2

114

138

143

d!60

dlSO

d200

d200

dlSO

d!70

173

217

238

T6?

140

124

107

104

116

124

135

dlSO

*161

d!70

181

4,549

147

9,020

June

188

d200

d210

d2o"0

188

161

135

133

112

100

88

74

69

66

59

54

*47

47

45

45

41

37

37

35

34

30

29

28

27

2!

2,542

84.7

5,040

July

20

20

21

TT

16

15

15

15

14

14

14

12

12

12

10

10

*8.9

8.5

7.8

7.2

5.9

4.4

4.2

3.7

3.4

3.4

2.6

2.7

2.6

2.2 

772

306.7

9.89

608

Aug.

2.0

1.8

2.1

2.0

2.1

2.4

3.0

3.2

3.0

3.0

3.4

374

3.0

3.0

3.0

3.0

2.7

2.7

2.6

2.7

2.1

1.6

775

*2.0

2.4

2.4

2.2

2.1

2.4

2.4

2 .4

78.1

2.52

155

Sept.

2.4

2.4

2.4

2.0

2.1

2.0

1.8

775

2.2

2.2

2.1

2.2

2.2

2.0

2.2

2.6

2.6

2.7

3.0

3.0

*2.7

2.7

2.7

2.7

2.6

2.7

2.6

3.0

3.0

3.4

74.2

2.47

147

Calendar year 1956: Max 246 Mi.n 1.8 Mean 45.7 Ac-ft 33,180

water year 1956-57: Max 286 Mi.n 1.6 Mean 41.1 Ac-ft 29,730

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge estimated on basis of records for adjacent periods 

records for Little Welser River near Indian Valley and other nearby streams. 

Note. Stage-discharge relation affected by Ice Dec. 6-11, Dec. 25 to Feb. 13.
WEISER RIVER BASIN 187

Little Weiser River near Indian Valley, Idaho

Location.--Lat 44°30', long 116°24', in NEij sec. 1, T. 13 N. , R. 1 W., on left bank 60 ft 

downstream from barn at Richardson Ranch, 1 mile upstream from diversion feeding into 

C. Ben Ross Reservoir, and 4f- miles southeast of Indian Valley.

Drainage area. 81.9 sq mi.

Records available. June 1920 to February 1921, March to June 1923, February 1924 to October1927, April 1938 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 3,250 ft (by barometer). Prior to 

Feb. 25, 1924, staff gage at approximately present site at different datum. Feb. 25 

to Apr. 22, 1924, staff gage at Burger Ranch 1 mile downstream at different datum. 

Apr. 23, 1924, to Nov. 18, 1927, water-stage recorder or staff gage at site half a mile 

downstream at different datum. May 6, 1938, to Aug. 11, 1950, staff gage at present 

site and datum.

Average discharge.--22 years (1924-27, 1938-57), 107 cfs (77,460 acre-ft per year).

Extremes.--Maximum discharge during year, 1,750 cfs May 14 (gage height, 5.59 ft), from 

rat ing curve extended above 650 cfs by logarithmic plotting; minimum, 2.9 cfs Dec. 8 

(gage height, 0.09 ft); minimum gage height, -0.03 ft Sept. 18.

1920-21, 1923-27, 1938-57: Maximum discharge observed, about 1,840 cfs Feb. 4, 1925; 

minimum recorded, that of Dec. 8, 1956.

Remarks. Records excellent except those above 600 cfs, which are good, and those for periods of ice effect, which are fair. One small diversion above station. Many diversions 

below station for irrigation including feeder canal to C. Ben Ross Reservoir.

Revisions (water years).--WSP 1347: 1923.

Rating tables, water year 1956-57, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Feb. 24 to May 14)

Oct. 1 to May 18 May 19 to Sept. 30

0.3 

.4

1.0 

1.3 

1.6 101

2.0 

2.5 

3.0 

3.5 

4.0 

4.5

177

306

460

625

840

1,100

-0.1

0.0

.2

6.0

8.2

14

23

41

63

1.5 

2.0 

2.5 

3.0 

4.0 

5.0

113

192

307

455

840

1,410

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

Ac-ft

Oct.

10

11

10

10

10

10

10

10

10

13

30

31

22

17

15

15

15

17

28

18

16

16

18

18

19

40

97

48

39

~n102

800

25.8

0.315

0.36

1,590

Nov.

49

40

39

36

33

44

*43

39

38

40

41

41

48

39

30

37

44

39

19

32

30

28

26

26

24

24

21

21

20

18

1,009

33.6

0.410

0.46

2,000

Dec .

16

20

22

22

19

20

16

1F~8.9

21.

76

93

-53 112

72

79

64

62

*56

49

49

28

46

41

31

24

21

32

28

26

24

1,278.9

41.3

0.504

0.58

2,540

Jan.

23

22

14

14

19

22

24

24

22

17

22

22

22

22

19

11

IT

12

14

18

20

20

19

18

*18

16

14

12

12

14

16

553

17.8

0.217

0.25

1,100

Feb.

18

17

16

T£

16

17

16

17

16

16

16

16

16

18

19

20

20

22

22

22

20

22

163

506

441

798

454

*281

-

3,041

109

1.33

1.38

6,030

Mar.

210

173

145

128

139

135

164

218

225

191

173

235

173

143

137

141

153

149

153

151

155

131

115

109

119

114

107

104

T5S

218

262

4,926

159

1.94

2.24

9,770

Apr.

220

191

177

*162

2T7

259

220

210

215

233

243

303

298

350

329

292

278

270

267

254

300

300

269

267

233

202

195

228

295

356

7,653

255

3.11

3.48

15,180

May

402

434

412

425

*402

396

458

470

556

539

612

653

724

945

925

775

728

880

1,120

860

674

586

530

 530

484

507

520

552

*580

583

622

18,864

609

7.44

8.57

37,420

June

626

678

698

1T70"

674

614

538

626

513

452

417

398

345

302

274

239

230

*227

227

241

206

187

174

172

160

152

146

138

130

122

10,576

353

4.31

4.80

20,980

July

116

res

102

97

89

83

79

74

69

66

64

60

57

55

52

51

49

*47

44

41

39

37

31

35

34

33

32

31

30

30

j!8_

1,769

57.1

0.697

0.80

3,510

Aug.

27

26

25

24

22

25

24

22

22

21

22

22

19

18

18

17

17

15

13

13

12

12

*11

IT

11

11

11

11

11

12

11

536

17.3

0.211

0.24

1,060

Sept.

12

TT

10

9.8

9.5

9.0

9.2

9.2

9.5

9.5

9.2

9.2

9.0

8.7

8.2

Tra- 7.8

il

11

9.5

*8.7

8.2

8.0

7.8

8.0

9.0

8.7

8.5

8.7

8.5

274.2

9.14

0.112

0.12

544

Calendar year 1956: Max 740 Min 8.9 Mean 121 Cfsm 1.48 In. 20.18 Ac-ft 88,150

Water year 1956-57: Max 1,120 Min 7.8 Mean 140 Cfsm 1.71 In. 23.28 Ac-ft 101,700

Peak discharge (ba 

1,750 cfs (5.5

0 cfs). Feb. 26 (1:30 p.m.) 1,480 cfs (5.23 ft); May 14 (6 p-mj 

9 ft); May 19 (12:30 a.m.) 1,420 cfs (5.03 ft); June 8 (6:30 p.m.) 860 cfs (4.04 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec 31 to Jan. 2, Jan. 18 to Feb. 4.
188 WEISER RIVER BASIN

Crane Creek Reservoir near Midvale, Idaho

Location. Lat 44°21'30", long 116°37'00", in SE£ sec. 19, T. 12 N., R. 2 W., at gatecontrol structure near left end of dam on Crane Creek, 9j miles southeast of Midvale.

Drainage area. 242 sq mi.

Records available.--November 1923 to September 1957 (fragmentary).

Gage. Staff gage. Altitude of gage is 3,190 ft (by barometer).

Extremes. Maximum gage height observed during year, 54.2 ft Mar. 1; minimum observed, 

26.7 ft Sept. 30.

1923-57: Maximum gage height observed, 56.3 ft Feb. 22, 1927; no usable contents 

Sept. 23, 1928, to Feb. 28, 1929, Sept. 25 to Dec. 1, 1929, Oct. 22 to Dec. 3, 1952.

Remarks. Reservoir is formed by earth dam completed in 1910 and raised in 1920-21. Spillway crest is at gage height 54.9 ft, and bottom of outlet tunnel is at gage height 

6.56 ft. Approximate contents is 51,700 acre-ft between gage height 8.0 and 55.0 ft, 

based on capacity table computed by the Geological Survey in 1927 and extended above 

43.0 ft by the Idaho Department of Reclamation in 1935. No usable contents below gage 

height 7.0 ft. Crane Creek Reservoir Administration Board reports no flow over spillway during the year.

Cooperation. Gage readings furnished by Crane Creek Reservoir Administration Board. 

Revisions. WSP 833: Drainage area.

Qage height, in feet, water year October 1956 to September 1957

Day

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

Oct.

33.1

-

-

-

-

_

-

32.5

_

32.5

_

_

-

-

-

_

..

_

_

-

_

-

_

-

-

_

_

-

-

_

-

Nov.

_

36.9

-

-

-

37.25

-

-

_

-

_

_

-

_

-

.

-

_

_

-

37.7

-

_

-

-

_

37.8

-

-

_

Dec.

_

-

-

-

-

_

-

-

_

-

_

38.8

_

-

-

_

_

_

41.00

-

_

_

_

-

-

_

_

_

41.6

_

-

Jan.

_

_

_

_

-

_

_

_

_

-

_

_

_

_

41.9

_

_

_

_

-

_

_

_

_

-

42.05

_

_

-

Feb.

_

_

-

42.1

_

_

_

_

-

42.0

_

-

_

_

_

_

-

_

_

_

44.2

48.6

51.3

53.47

54.0

_

Mar.

54.2

53.8

_

.

-

.

-

53.2

_

-

_

_

53.4

_

-

_

52.6

_

_

-

_

50.4

_

-

-

48.3

47.8

_

_

_

-

Apr.

49.4

49.15

49.0

-

.

-

48.5

_

-

.

_

_

_

-

47.5

_

_

_

-

_

_

_

-

-

_

_

_

_

_

May

48.0

48.02

-

_

-

48.3

_

-

_

49.1

49.4

-

-

49.7

49.6

_

_

-

49.0

_

_

47.3

-

_

_

47.51

_

_

-

June

_

47.6

47.6

_

-

47.5

47.5

_

_

-

.

_

_

47.6

-

47.35

_

_

_

47.3

_

_

_

_

-

_

47.2

_

-

_

July

47.0

_

-

_

46.8

_

-

-

_

-

46.4

46.2

_

-

45.55

_

_

_

45.0

44.6

_

_

-

-

_

_

43.4

-

_

-

Aug.

_

42.3

-

41.8

-

_

-

-

40.5

.

39.6

_

_

-

38.4

_

37.8

-

37.2

_

_

_

-

35.5

35.21

_

-

34.3

Sept.

_

_

33.4

_

-

_

32.4

-

_

31.05

_

_

30.2

_

-

29.0

28.7

_

-

28.2

28.13

_

27.8

-

_

_

-

_

26.7
WEISER RIVER BASIN 189

Crane Creek near Midvale, Idaho

Location. Lat 44°21'30", long 116°37 I 10", in SEv sec. 19, T. 12 N., R. 2 W. , on left 

bank 400 ft downstream from Crane Creek Dam and 9f miles southeast of Midvale.

Drainage area.--242 sq mi.

Records available.--October 1910 to September 1911, January 1912 to September 1915, 

January to April 1916, May 1924 to September 1957.

Gage. Water-stage recorder and concrete control. Altitude of gage is 3,140 ft (by 

oarometer). Prior to May 1, 1924, staff gage at site 100 ft upstream at different 

datum. May 1, 1924, to Dec. 7, 1952, water-stage recorder on right bank at datum 

1.54 ft higher.

Average discharge.--36 years (1912-15, 1924-57), 75.3 cfs (54,510 acre-ft per year).

Extremes.--Maximum discharge during year, 973 cfs Mar. 2 (gage height, 5.09 ft); no flow 

for long periods.

1910-16, 1924-57; Maximum discharge observed, 4,240 cfs Dec. 3, 1910 (gage height, 

8.9 ft, site and datum then in use), from rating curve extended above 3,500 cfs; no 

flow at times in many years when gates in dam were closed.

Remarks.--Records good except those below 1 cfs, which are fair. Flow regulated since 

1911 by Crane Creek Reservoir (see preceding page). No large diversion above station.

Cooperation. Water-stage recorder inspected by Crane Creek Reservoir Administration 

Board.

Revisions (water years). WSP 833: Drainage area. WSP 963: 1941 (M). WSP 1347: 1925, 

1927.

Rating table, water year 1956-57, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.56

1.6

1.7

1.8

0 

.4

3.3 

7.3

1.9

2.0 

2.5 

3.0 114

3.5 

4.0 

4.5 

5.1

193

345

600

980

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

32

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

48

48

48

48

47

47

47

23

.1

.1

.1

.1

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

.1

.1

.1

.2

.1

357.2

11.5

708

Nov.

0.1

.1

.1

.1

.1

*.l

0

3

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

0.6

0.02

1.2

Dec.

(*)

0

0

0

Jan.

(*)

0

o

0

Feb.

-Q0

0

3.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

275

738

931

*959

966

-

4,053.0

145

8,040

Mar.

159" 959

959

959

959

959

959

952

959

959

959

959

959

959

952

952

952

945

938

945

945

924

890

890

864

858

635

16

14

14 

13

25,186

812

49,960

Apr.

264

415

*415

410

410

363

174

390

294

294

294

291

291

294

294

104

.6

.4

T4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

4.8

5,007.2

167

9,930

May

7.8

*7.3

6.5

675

6.5

6.9

9.5

8.6

7.8

6.9

6.9

286

690

852

645

838

653

884

854

884

884

878

871

568

12

13

.12

*11

11

11

11

10,179.2

328

20,190

June

11

T2

15

17

17

17

19

22

22

20

20

20

20

20

20

*20

21

20

20

19

19

19

19

19

19

19

20

20

20

20

566

18.9

1,120

July

 5T 21

21

22

32

79

79

79

79

79

66

102

130

151

150

*146

146

145

145

144

163

197

T§5

193

193

193

193

193

191

189 

191

3,948

127

7,830

Aug.

191

191

228

228

225

243

249

249

246

246

243

243

240

240

240

240

238

211

189

197

204

204

204

202

202

200

*197

197

195

164 

126

6,672

215

13,230

Sept.

124

124

139

146

146

146

148

150

T50

150

150

150

139

130

127

120

114

113

113

112

106

*100

100

86

66

65

64

63

63

62

3,466

116

6,870

Calendar year 1956: Max 648 Min 0 Mean 90.1 Ac-ft 65,370

Water year 1956-57: Max 966 Min 0 Mean 163 Ac-ft 117,300

* Discharge measurement or observation of no flow made on this day.

Note. Stage-discharge relation affected by ice Dec. 12 to Feb. 4. No gage-height record Nov. 21 

to Dec. 11, Dec. 13, 20-28, Dec. 30 to Jan. 14, Jan. 16 to Feb. 3, Feb. 4-11, 13-17; discharge 

estimated on basis of trend of flow, 1 observation of no flow, ana record of gate change.
190 WEISER RIVER BASIN

Crane Creek at mouth, near Weiser, Idaho

Location. Lat 44°18', long 116°47', in sec. 14, T. 11 N. , R. 4 W. , on right bank Just 

downstream from highway bridge at Harris Ranch, a quarter of a mile upstream from 

mouth and 10 miles northeast of Weiser.

Drainage area.--288 sq mi.

Records available. July to September 1920, February 1921 to September 1957.

Gage. Water-stage recorder and concrete control. Altitude of gage is 2,240 ft (by barometer) .

Average discharge. 36 years (1921-57), 83.8 cfs (60,670 acre-ft per year).

Extremes. Maximum discharge during year, 3,170 cfs Feb. 26 (gage height, 6.23 ft); minimum, 0.7 cfs Apr. 26 (gage height, 1.52 ft); minimum daily, 1.2 cfs Apr. 30.

1920-57: Maximum discharge, that of Feb. 26, 1957; no flow for part of May 1, 1956; 

minimum daily, 0.2 cfs May 3, 1956; minimum gage height, 1.30 ft Jan. 21, 1922.

Remarks.--Records good except those for periods of ice effect, which are fair. Flow regulated by Crane Creek Reservoir (see p. 188). Several small ditches divert above station for irrigation.

Revisions. WSP 833: Drainage area.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, In feet, and discharge, in cubic feet per second)

1.9

0.5 

1.6 

3.5 

6.2 

9.6

2.1 

2.4 

2.7 

3.0 

3.5

19

40

73

128

272

4.0 

4.5 

5.0 

5.5

505

930

1,470

2,090

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

49 

49

49

49

48

46

45

41

11

6.5

9.2

12

9.2

7.5

6.8

6.2

67s

6.8

7.1 

6.8

6.5

6.2

6.5

6.8

8.1

18

119

24

11

184

39

900.7

29.1

1,790

Nov.

15 

11

9.2

8.5

*8.1

8.1

7.8

7.5

7.5

7.5

6.8

6.8

6.8

6.8

6.8

6.5

6.5

6.5

6.2 

6.2

6.2

5.9

5.6

5.6

5.6

5.6

*5.6

5.6

S.S

5.6

213.0

7.10

422

Dec.

5.6 

5.5

5.5

5.5

5.5

5.5

5.5

5.0

675

6.5

47

52

33

21

14

14

18

15

14 

11

9.2

7.8

7.8

7.5

7.1

6.5

6.0

5.5

6.0

6.0

5.5

370.5

12.0

735

Jan.

5.5 

575

4.5

4.5

4.5

4.5

4.5

*4.8

4.8

4.0

4.0

4.5

4.8

5.0

4.8

4.0

3.5

375

3.7 

4.0

4.3

4.5

4.5

4.5

4.3

4.0

4.0

4.0

4.0

4.0

4.0

134.5

4.34

267

Feb.

4.5

F7o

5.5

6.0

10

14

14

15

15

14

14

14

14

16

16

17

18

16

15

16

15

15

48

808

1,320

*1. 900

1,360

1,110

-

6,835.0

244

13,560

Mar.

1,020 

1,000

1,030

1,040

1,200

1,060

1,150

1,080

1,010

970

980

1,450

1,030

1,000

1,010

1,020

1,020

1,000

1,000 

1,000

990

970

940

920

910

880

749

63

34 

5F

133

27,694

893

54,930

Apr.

198 

*410

420

420

420

415

150

410

317

309

309

313

309

313

309

192

15

11

10 

9.2

10

12

10

7.8

6.5

5.1

5.6

5.3

4 2

*1. 2

5,326.9

178

10,570

May

H7.1

11

9.2

9.2

*9.2

11

10

11

12

162

603

794

840

830

657

890

1.080 

920

890

890

890

697

28

18

*15

12

11

12

11

10,347.3

334

20,520

June

ZJ, 

7.1

7.8

8.1

8.8

9.6

10

11

11

12

11

12

13

15

*14

12

15

17

16 

16

15

15

13

8.1

12

11

12

11

9.6

10

350.2

11.7

695

July

IS. 

12

12

17

13

53

66

66

68

68

68

86

96

124

*130

133

130

128

128 

126

128

165

165

168

165

168

168

173

173 

170

168.

3,347

108

6,640

Aug.

160 

165

198

204

204

216

222

222

226

222

222

216

219

219

219

219

216

192

165 

168

173

173

178

181

184

*181

184

184

181

162 

118

5,993

193

11,890

Sept.

113 

111

122

133

133

133

133

138

13T

138

138

138

130

115

113

111

105

105

105 

105

103

94

*91

87

64

63

63

58

58 

58

3,191

106

6,330

Calendar year 1956: Max 1,150 Min 0.2 Mean 102 Ac-ft 74,230

Water year 1956-57: Max 1,900 Min 1.2 Mean 177 Ac-ft 128,300

* Discharge measurement made on this day.

No te.--Stage-discharge relation affected by ice Dec. 2-8, Dec. 26 to Feb. 13.
WEISER RIVER BASIN 191

Welser River near Welser, Idaho

Location. Lat 44°16 t SO", long 116°47'00", In NW£ sec. 23, T. 11 N., R. 4 W., on right 

bank 0.4 mile upstream from county road bridge, If miles downstream from Crane Creek, 

and 9| miles northeast of Weiser.

Drainage area.--1,460 sq mi, approximately.

Records available. March 1890 to June 1891, December 1894 to October 1896, April to

September 1897, March 1898 to November 1899, March 1900 to December 1904, October 1910 

to December 1914, October 1952 to September 1957. Published as "at Weiser" prior to 

1900.

Gage.--Water-stage recorder. Altitude of gage is 2,220 ft (by barometer). Prior to 

(Jctober 1952, staff gages at several sites downstream within 2| miles of present site 

at various daturas.

Average discharge 14 years (1895-96, 1898-99, 1900-1904, 1911-14, 1952-57), 1,240 cfs 

(897,700 aore-ft per year).

Extremes. Maximum discharge during year, 19,000 cfs Feb. 27 (gage height, 10.81 ft); minimum, 118 cfs Oct. 9, 10 (gage height, 1.66 ft).

1890-91, 1894-1904, 1910-14, 1952-57: Maximum discharge observed, 19,900 cfs 

Dec. 23, 1955 (gage height, 11.06 ft); minimum observed, 14 cfs Aug. 7, 1911 (gage 

height, 2.80 ft, site and datum then in use).

Flood of Mar. 19, 1932, reached a discharge of about 17,500 cfs.

Remarks. Records excellent except those for periods of ice effect, which are fair. Flow 

partly regulated by Crane Creek Reservoir (see p. 188) , Lost Valley Reservoir (see 

p. 183), and other small reservoirs. Diversions above station for irrigation of about 

22,000 acres.

Revisions (water years).--WSP 1347: 1895-1905, 1953(M).

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.6 

2.0 

2.5 

3.0

108

220

420

690

3.5 

4.0 

5.0 

6.0

1,060

1,550

2,910

4,730

7.0

8.0

10.0

6,940

9,700

16,100

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

185

174

176

179

171

168

165

162

127

132

208

327

370

299

261

240

230

227

237 

254

230

214

214

227

244

319

876 

787

470

1.700 

1,540

11,113

358

22,040

Nov.

Soa" 818

500

465

*430

406

425

406 

370

348

344

348

344

374

344

311

348

415

352

276

295

299

284

272

255

245

*230 

215

230

215

10,772

359

21,370

Dec.

210

215

235

440

230

230

210

170 

210

280

370

980

1,310

1,200

848

988

916

811

804 

642

602

475

455

480

390

310

320 

320

300

280 

270

15,301

494

30,350

Jan.

250

240

230

220

230

250

270

*290 

270

220

240

250

270

280

260

180

160

150

TSo

210

230

240

230

230

210

190

180 

190

210

210 

215

6,985

225

13,850

Feb.

220

220

220

220

220

220

210

200 

220

210

210

220

210

220

230

230

230

240

260 

260

240

240

450

2,600

7,220

12,900

14.900 

8,380

-

51,400

1,836

102,000

Mar.

*6,140

4,970

4,040

3,890

5,240

5,060

6,700

6,940 

6,480

5,600

4,590

7.060

4,810

3,870

3,640

3,820

4,420

3,730

3,460 

3,350

3,470

3,150

2,770

2,560

2,530

2,540

2,260 

1.520

1,520

2,500 

3,400

126,030

4,065

250,000

Apr.

3,400

*2,860

2,610

2,400

2,330

3,220

2,560

2,560 

2,370

2,460

2,590

3,350

4,830

4,590

4.970

4,090

3,350

3,000

2,770 

2,640

2,810

3,110

2,980

2,880

2.590

2,230

1,960 

1.860

2,130

*2_,720

88,220

2,941

175,000

May

3,160

3,490

3,510

3,470

3,580

3,250

3,180

3,420 

3,910

4,230

4,260

4,850

5,580

5,710

5,690

5,390

4,910

5,310

7,940 

77320"

5,960

5,160

4,690

4,190

3,200

3,100

3,080 

*3,030

3,160

3,060 

3,080

133,870

4,318

265,500

June

3,050

3,160

3.300

3,100

2,930

2,830

2,380

2,470 

2,620

2,030

1,830

1,660

1,570

1,420

*1,320

1,150

1,000

932

908 

956

908

825

755

710

672

624

608 

564

531

...JO&

47,303

1,577

93,820

July

450

415

374

340

311

327

331

323 

299

280

261

269

265

295

*303

323

272

272

272 

261

261

303

319

307

291

295

295 

287

284

272 

265

9,422

304

18,690

Aug.

247

251

276

291

287

299

311

323

323

323

327

3§1

327

319

311

307

291

272

244 

240

247

254

265

261

269

*272

272 

276

276

258 

210

8,752

282

17,360

Sept.

207

207

220

234 223"

214

204

210 

198

198

204

210

204

191

188

185

179

179

179 

191

194

185

*185

182

154

146

146 

143

146

140

5,646

188

11,200

Calendar year 1956: Max 7,120 Mln 127 Mean 1,186 Ac-ft 861,100

Water year 1956-57: Max 14,900 Mln 127 Mean 1,410 Ac-ft 1,021,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 25 to Dec. 5, Dec. 7-12, Dec. 24 to Feb. 24.
192 WEISER RIVER BASIN

Reiser Irrigation District Canal near Weiser, Idaho

Location. Lat 44°15' , long 116°51', in sec. 32, T. 11 N. , R. 4 W., on left bank 3£ miles 

downstream from headworks of canal and 7 miles east of Weiser.

Records available. April 1920 to September 1957 (winter records fragmentary prior to 1950). 

Gage. Water-stage recorder. Altitude of gage is 2,160 ft (by barometer).

Extremes. 1920-57: Maximum daily discharge, 223 cfs June 24, 1957; no flow at times 

when gates were closed.

Remarks. Records excellent except those below about 20 cfs, which are good, and those for 

periods of no gage-height record, which are poor. Canal diverts water from right bank 

of Weiser River in sec. 35, T. 11 N., R. 4 W., for irrigation of about 11,700 acres, 

including about 1,200 acres irrigated from five diversions above station in projects of 

Weiser and Weiser Bench Irrigation Districts.

Cooperation.--Water-stage recorder inspected by employees of Weiser Irrigation District.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

124

124

124

120

114

110

107

110

102

92

65

2.7

2.1

1.7

1.7

1.5

1.3

1.1

1.1

1.0

1.0

.9

.9

.8

.8

.7

78

.9

1.0

1.0 

1.0

1,216.0

39.2

2,410

Nov.

"79 0.9

.9

.9

*.9

.9

.9

.8

.8

.8

.8

.7

.7

.7

.7

.7

.6

.6

.6

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

^A

Z0.5

0.68

41

Dec.

0.4

.4

.4

.4

.4

.4

.4

.4

tt

.5

1.0

1.0

.9

.8

.7

.7

.6

*.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.3

.3

.3

15.4

0.50

31

Jan.

 0.3

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.4

0.21

13

Feb.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.6

.8

.9

1.0

*6_£.

2.4

1.1

-

17.0

0.61

34

Calendar year 1956: Max 220 Min 0

Mar.

1.0

1.0

1.0

.9

.9

.9

. 9

.8

.8

.8

.8

.7

1.3

1 . 2 i!o

1.0

.9

.8

.7

.6

.6

.6

.5

.5

.5

.5

.5

.5

.4

.4

.4

23.4

0.75

46

Apr.

0.4

*.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

55

100

101

101

104

110

119

132

132

135

134

137

*148

1,513.8

50.5

3,000

May

154

157

156

157

156

160

166

168

172

178

184

185

186

187

185

184

185

187

188

184

181

179

178

184

184

186

187

*189

192

196

196

5,531

178

10,970

June

195

136

199

201

204

208

208

208

210

208

212

212

213

211

*212

212

212

216

217

221

222

220

222

223

221

221

220

220

218

218

6,380

Z13

12,650

July

217

ITT

216

216

216

182

19

128

171

191

196

196

193

200

*200

201

204

208

213

209

203

208

205

204

206

208

209

208

204

204

204

6,056

195

12,010

Aug.

197

197

200

198

205

206

206

207

206

206

204

206

206

205

204

207

206

205

191

184

194

196

199

197

198

198

*197

195

192

189

17_4

6,175

199

12,250

Sept.

178

T74

178

176

177

177

173

172

174

172

175

169

159

157

156

156

155

155

153

151

149

*148

149

138

75

133

130

128

129

124

4,640

155

9,200

Mean 94.8 Ac-ft 68,790

Water year 1956-57: Max 223 Min 0.2 Mean 86.6 Ac-ft 62,660

* Discharge measurement made on this day.

Note.--NO gage-height record Oct. 19 to Nov. 4, Nov. 6 to Jan. 6, Jan. 8 to Feb. 25, Mar. 1-12, 

Mar. 15 to Apr. 1, Apr. 3-17; discharge estimated on basis of weather records, trend of flow, and 

records for Weiser River near Weiser.
WEISER RIVER BASIN 193

Mann Creek near Weiser, Idaho

Location. Lat 44°23'30", long 116°53'40", in NE^ sec. 11, T. 12 N., R. 5 W., on left bank 

2 miles upstream from U. S. Highway 95, 10 miles northeast of Weiser, and llj miles 

upstream from mouth.

Drainage area. 56 sq mi, approximately.

Records available. March 1911 to September 1913, July to November 1920, April 1937 to 

September 1957.

Gage.--Staff gage read twice daily. Crest-stage indicator since July 16, 1957. Altitude 

of gage is 2,830 ft (from topographic map). Prior to Feb. 9, 1951, staff gages at 

sites within 1,000 ft upstream at different datums.

Average discharge. 22 years (1911-13, 1937-57), 41.2 cfs (29,830 acre-ft per year).

Extremes. Maximum discharge observed during year, 602 cfs Feb. 26 (gage height, 3.40 ft, 

from floodmarks); minimum observed, 1.1 cfs Aug. 24, 25, 26, 27, Sept. 8 (gage height, 

0.52 ft).

1911-13, 1920, 1937-57: Maximum discharge, 1,540 cfs Mar. 27, 1940 (gage height, 

5.45 ft, from floodmark, site and datum then in use), from rating curve extended 

above slope-area determination at gage height 4.21 ft; no flow Aug. 18 to Sept. 22, 

1937, July 31 to Sept. 13, 1939.

Remarks. Records fair. One diversion above station for irrigation.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

Oct. I to Feb. 25 Feb. 26 to Sept. 30

1.0 1.5

1.1 5.0

1.2 12

1.3 23

1.4 36

1.6 74

1.8 123

0.5 

.6 

.7

0.9 

2.5

1.4 

1.7 

2.0 

2.5 

3.0

53

93

152

287

455

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

2.5

275

2.5

2.5

2.5

2.5

2.5

2.5

2.5

3.6

8.9

12

8.9

5.6

4.5

4.0

4.5

4.0

4.0

4.0

4.0

4.0

4.0

5.0

6.2

8.9

14

8.1

8.9

^i T?>

196.6

6.34

390

Nov.

9.7

8.1

6.8

8.1

12

*12

16

12

12

12

12

12

12

12

8.9

8.9

9.7

9.7

8.1

8.1

8.1

6.8

8.9

8.0

7.5

7.5

7.5

7.0

6.5 776"

284.9

9.50

565

Dec.

6.5

5.0

576

6.5

6.5

6.5

6.0

5.0

6.5

10

16

26

20

18

15

15

14

14

*14

14

14

13

12

11

11

10

9.5

9.5

9.0

9^0

346.6

11. Z

687

Calendar year 1956: Max 373

Jan.

9.0

9.5

970

8.5

8.5

8.5

9.0

9.0

8.5

8.5

8.5

9.0

9.0

9.5

9.0

8.5

8.0

7.5

8.5

8.5

8.0

8.5

8.0

8.0

8.0

*8.0

7.5

6.5 776"

7.5

7.5

258.5

8.34

513

Feb.

7.5

7.5

7.5

8.1

8.9

8.0

7.0

7.5

8.0

8.5

8.0

7.5

6.8

6.8

6.8

6.2

676

6.8

6.8

6.8

6.8

6.8

6.8

84

*118

*390

239

*152

1,151.0

41.1

2,280

Mln 1.0

Mar.

130

112

92

72

87

75

110

161

132

126

86

107

80

73

73

73

69

73

80

82

81

75

65

5s

68

68

74

73

96

130

157

2,848

91.9

5,650

Apr.

124

110

*103

120" 96

108

103

107

118

134

150

203

153

195

170

170

152

145

148

148

157

161

157

148

141

124

116

118

134 

139

4,202

140

8,330

May

*168

166

159

185

180

143

139

145

143

143

125

161

173

141

134

126

110

132

T95" 236

173

157

148

114

107

95

98

*92

84

77

74.

4,324

139

8,580

June

64

60

57

52

49

45

44

43

43

41

32

26

31

31

*29

28

26

26

26

22

22

20

20

20

18

17

17

17

16

16

958

31.9

1,900

July

14

TI

14

14

14

14

14

13

12

12

12

12

12

10

8.2

*8.6

8.2

7.4

7.4

7.4

6.6

6.6

6.6

6.6

6.0

4.8

4.8

4.2

3.9

3_J. 

3.7

285.7

9.22

567

Aug.

3.9

377

3.5

3.3

3.5

3.7

3.7

3.5

3.3

3.1

3.1

2.9

2.7

2.5

2.5

2.1

2.1

1.7

.7

.7

.7

.4

.4

.3

.1

.3

* .4

.7

2.1 

2.1

2.1

75.8

2.45

150

Sept.

2.1

2.1

2.1

2.1

1.7

1.7

1.4

1.3

27T

2.1

2.1

2.1

1.9

2.1

2.1

1.9

2.1

2.5

2.3

2.5

3.7 *2TS

2.7

3.3

3.1

3.3

3.1

2.5

2.1 

2.1

68.7

2.29

136

Mean 42.4 Ac-ft 30,760

water year 1956-57: Max 390 Mln 1.1 Mean 41.1 Ac-ft 29,750

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice Nov. 24 to Dec. 1, Dec. 4-10, Dec. 22 to Feb. 3, 

Feb. 6-12, 17, 21.
194 SNAKE RIVER MAIN STEM 

Snake River at Weiser, Idaho

Location.--Lat 44°14'40", long 116°58'25", in sec. 31, T. 11 N., R. 5 W. , on right bank 

a third of a mile upstream from highway bridge at Weiser and a third of a mile downstream from Weiser River.

Drainage area.--69 .200 sq mi, approximately.

Records available. October 1910 to September 1957. Fragmentary gage-height record

obtained by U. S. Weather Bureau since 1895. Monthly discharge only for some periods, 

published in WSP 1317.

Gage.--Water-stage recorder. Datum of gage is 2,086.64 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Oct. 1, 1914, staff gage half a 

mile downstream at different datum. Oct. 1, 1914, to Oct. 11, 1933, staff gage at 

present site and datum.

Extremes.--Maximum discharge during year, 66,400 cfs May 24 (gage height, 12.61 ft); minimum, 10,000 cfs July 15 (gage height, 3.11 ft).

1910-57: Maximum discharge, 84,500 cfs Apr. 29, 1952 (gage height, 14.67 ft); minimum observed, 5,100 cfs Aug. 5, 1924 (gage height, 1.35 ft).

Flood of Mar. 3, 1910, reached a stage of 15.7 ft on old U. S. Weather Bureau gage 

(discharge, about 100,000 cfs). Flood in June 1894 was considerably higher.

Remarks. Records excellent. Flow regulated by many reservoirs above station. Dirunal 

fluctuation caused by Swan Falls powerplant. Diversions for irrigation of about 

2,456,000 acres above station (1946 determination).

Revisions (water years).--WSP 1317: 1918.

Rating table, water year 1956-57 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Feb. 24 to Mar. 5, Sept. 19-3O)

3.0 

4.0 

5.0 

6.0

9,700

13,600

17,900

22,900

7.0

8.0

10.0

1Z.6

28,500 

34,500 

47,400 

65, 9OO

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1 

2 

3

4 

5

6 

7 

S 

9

10

11 

12 

13 

14

15

16

17 

18 

19 

20

21

Z3 

24 

Z5

26

27 

28 

29 

30 

31

Total 

Mean 

Ac-ft

Oct.

14,600 

15,100 

14,800 

14,800 

15,400

15,100 

16,600 

17 , 000 

17,100 

16,300

15,800 

16,000 

17,100 

18,500 

19,300

18,900 

18,200 

18,000 

16,800 

16,100

16,400 

16,300 

14,900 

15,000 

17,000

18,400 

19,800 

19,200 

16,500 

17,400 

IjJjilOO

SEE, 300 

16,850 

tl,056

Nov.

17 , 900 

17,300 

15,000 

17 , 200 

16,800

*16,200 

16,600 

18,000

17' 200

17,100 

15,400 

15,400 

16,800 

16,800

16,600 

15,800 

14,000 

12,400 

12,800

14,500 

15,100 

15,000 

13,600 

14,800

14,600 

*14,400 

15,100 

15,600 

15,600

471, EOO 

15,710 

934,600

Dec.

15,800 

15,200 

15,200 

13,700 

14,100

14,600 

15,200 

15,600 

16,200 

14 , 900

14,400 

16,700 

16,300 

16,000 

16,100

16,400 

16,500 

16,500 

16,000 

15,300

16,000 

16,000 

18,000 

16, EOO 

13,000

12,900 

12.400 

14,300 

16,600 

16,800 

15,600

478,500 

15,440 

949,100

Jan.

13,100 

15,600 

13,200 

14,900 

15,100

14,800 

13,700 

*14,000 

14,800 

15,400

15,600 

15,400 

14,800 

13,500 

lljlOO

13,800 

15,600 

14,400 

15,400 

16,000

15,800 

13,700 

16.100 

13,900 

13,900

12,300 

12, EOO 

12,900 

11,200 

14,900 

15,600

442,700 

14,280 

878,100

Feb.

14,100 

11,700 

16,800 

13,600 

11,900

14,300 

15,600 

14,800 

14,600 

14,500

13,900 

11.000 

13,100 

14,900 

14,700

13,100 

13,700 

15,200 

14,400 

15,800

14,800 

15,500 

14,800 

29,000 

56,100

55,700 

*58,600 

45,500

571,700 

20,420 

*1,134

Mar.

36,500 

33,700 

31 , 000 

30,800 

31,700

30,400 

33,400 

37,600 

39,000 

40,000

38,600 

40,800 

40,800 

37,100 

33,700

32,200 

33,300 

28,500

E2.500 

26,000

26,500 

25,300 

22,900 

22,200 

EE,800

E3.800 

26,800 

27,100 

28,000 

27,800 

29,600

960,400 

30,980 

*1,905

Apr.

30,500 

*30,100 

34,300 

33,600 

34,000

35,000 

35,000 

30,900 

29,300 

28,100

28,100 

31,200 

36,200 

37,100 

38,500

35,600 

35,900 

35,500 

34,600 

33,500

34,300 

34,100 

32,600 

34,400 

35,800

33,200 

33,400 

31,400 

32,300 

32,400

tl,000.9 

33,360 

*1,985

May

*32,400 

29,900 

28,800 

31,400 

33,500

33,100 

32,900 

34,500 

36,300 

38,600

38,100 

41,600 

43,400 

47,500 

54,200

54,300 

56,000 

55,600 

60,000 

62,600

62,200 

65,100 

64,100 

65.600 

62,700

59,900 

*56,700 

54,500 

52,900 

50,700 

43,900

*1,483 

47,840 

*E,941

June

45,500 

42,800 

42,000 

40,400 

59,700

41,000 

57,800 

55,800 

57,500 

55,000

33,100 

31,100 

29,800 

*.28,500 

27 , 000

25,500 

25,800 

E2.EOO 

19,400 

18,900

18,100 

16,300 

16,000 

14 , 000 

15, EOO

15,600 

14 , 000 

14,800 

15 , 700 

IE. 700

800,400 

E6.680 

tl,588

July

15,200 

12,300 

12,100 

12,000 

12,000

10,800 

10,900 

11,100 

10,800 

10,500

11 , 000 

11,000 

10,700 

10,600 

10,200

*10,500 

10,800 

10,800 

10,600 

11,500

11,000 

11,500 

11,500 

11,500 

11,400

10,900 

11,700 

11,100 

11,500 

11,500 

11, EOO

347,400 

11,210 

689,100

Aug.

11,200 

10,900 

11,000 

11,700 

IE, 100

11,100 

11,000 

10,800 

11,600 

11,700

11,800 

11,900 

10, 900 

IE, 100 

1 1 , 000

10, 900 

11,100 

1 1 , 600 

12,300 

11,900

11,600 

IE, 100 

11,500 

10,900 

11,900

*10,800 

11,400 

12, EOO 

11,800 

15,100 

IE, 900

558,600 

11,570 

711,500

Sept.

12,700 

15,100 

12,900 

15,600 

12,700

13,200 

13,400 

15,200 

IE, 800 

12_,500

14,300 

13,400 

15,400 

15,400 

14,600

15,800 

14,200 

15,800 

15 , 000 

14,400

14,500 

14,800 

*14,700 

14,600 

14,800

14,600 

15.200 

14,600 

14,500 

14,200

414,700 

13,820 

822,500

Calendar year 1956: Max 55,400 Min 10,300 Mean 21,840 Ac-ft 15,850,000 

Water year 1956-57: Max 65,600 Min 10,200 Mean 21,510 Ac-ft 15,570,000

* Discharge measurement made on this day.

* Expressed in thousands.
BURNT RIVER BASIN

Unity Reservoir near Unity, Oreg.

Location.--Lat 44°30'20", long 118°11'00", in SW^SE^ sec. 21, T. 12 S., R. 37 E., at Unity 

Dam on Burnt River, 500 ft downstream from Job Creek, half a mile downstream from confluence of North, Middle, and South Forks of Burnt River, and 4j miles north of Unity.

Drainage area. 309 sq mi.

Records available.--March 1938 to September 1957.

Gage.--Staff gage above elevation 3,803.3 ft, reference marks for lower readings; gage 

read once daily. Datum of gage is at mean sea level, Bureau of Reclamation bench mark 

(to convert elevations to datum of 1929, add 0.12 ft). Prior to Nov. 4, 1941, reference mark or mercury pressure gage at same site and datum.

Extremes.--Maximum contents observed during year, 25,220 acre-ft Apr. 9-14, May 3-7 (ele-

 vation, 3,820.0 ft); minimum observed, 1,160 acre-ft Sept. 30 (elevation, 3,782.4 ft).

1938-57: Maximum contents observed, 25,770 acre-ft Apr. 13, 1942 (elevation, 

3,820.6 ft); no contents Sept. 5 to Oct. 4, 1955.

Remarks. Reservoir is formed by earth-fill dam with concrete spillway and outlet works,

 completed by Bureau of Reclamation in 1937: storage began Feb. 19, 1938. Capacity 

25,220 acre-ft between elevations 3,776.5 (bottom of outlet gates) and 3,820.0 ft (top 

of radial gates on spillway when closed). Dead storage, 600 acre-ft below elevation 

3,776.5 ft. Records given herein represent usable contents. Water used for irrigation 

in the Burnt River Irrigation District near Hereford and Bridgeport. Contents computed 

from capacity table based on surveys by Bureau of Reclamation.

Month-end elevation and usable contents, water year October 1956 to September 1957

Date

Calendar year 1956. ...............................

Sept. 30..................... -. .......................

Water year 1956-57 ................................

Elevation 

(feet)

-

3,782.4

-

Contents 

(acre-feet)

-

4,850

1,160

-

Change In contents 

(acre-feet)

_

-5,640

-3,690

-2,490

Note.--Gage read between 4 and 7:3O p
196 BURNT RIVER BASIN

Burnt River near Hereford, Oreg.

Location. Lat 44 0 30'20", long 118 0 10'50", in SE$ sec. 21, T. 12 S., R. 37 E., on left 

bank at entrance to canyon, 1,250 ft downstream from Unity Dam, 0.3 miles upstream 

from Van Cleve ditch, 0.7 mile downstream from South Pork, and 7 miles west of Hereford.

Drainage area. 309 sq mi.

Records available.--March to September 1915, April to September 1916, October 1928 to 

September 1957. Monthly discharge only for some periods, published in WSP 1317.

e. Water-stage recorder. Datum of gage is 3,756.75 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Mar. 16, 1915, to Sept. 4, 1916, staff gage 

at site 2 miles downstream at different datum. Oct. 22, 1928, to June 28, 1932, waterstage recorder at site half a mile downstream at different datum. June 29, 1932, to 

Sept. 16, 1937, water-stage recorder at site 300 ft upstream at different datum. 

Sept. 17, 1937, to Sept. 30, 1943, water-stage recorder at present site at datum 

3.29 ft higher.

Average discharge . 29 years (1928-57), 81.4 ofs (58,930 acre-ft per year).

Extremes.--Maximum discharge during year, 795 cfs Apr. 14 (gage height, 4.83 ft); minimum, 

6.0 cfs for many days in January and February.

1915-16, 1928-57: Maximum discharge, 2,220 cfs Apr. 17, 1943 (gage height, 7.35 ft, 

present datum), from rating curve extended above 1,300 cfs by logarithmic plotting; 

maximum gage height, 7.85 ft Apr. 16, 1943, present datum, just before concrete control 

washed out; no flow at times; minimum discharge before construction of Unity Reservoir 

Dam, 1.6 cfs Aug. 31, 1935.

Remarks.--Records good except those for periods of shifting control, which are fair. 

Diversions for irrigation of 8,700 acres above station. Eldorado ditch diverts as 

much as 34 cfs from several tributaries above station for irrigation in Willow Creek 

basin. A transmountain diversion from headwaters of John Day River delivers 12 cfs to 

North Pork Burnt River for irrigation. Plow regulated since 1938 by Unity Reservoir 

(see preceding page).

Revisions (water years).--WSP 903: 1939. WSP 1397: 1916, 1930, 1933(M).

Rating tables, water year 1956-57, except periods of shifting control (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. I to Apr. 11 Apr. 12 to Sept. 30

1.3 6.0

1.5 12

1.7 20

2.0 38

2.5 83

3.0 

3.5 

4.0 

4.5

150 

255 

400 

6 CO

2.0 50

2.5 105

3.0 185

3.5 

4.0 

5.0

295

440

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

56

44

41

»41

42

42

39

30

30

30

30

30

30

30

30

31

31

31

31

31

30

30

30

30

*30

30

31

31

31

31

31

1,035

33.4

2,050

Nov.

31

31

31

31

31

31

31

31

31

31

31

24

17

*17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

671

22.4

1,330

Dec.

17

17

17

17

17

17

16

16

16

16

16

17

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

503

16.2

998

Jan.

16

16

16

16

16

16

16

16

16

16 ,

16

15

7.5

6.8

6.8

6.5

6.5

6.5

6.2

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

*.6.0

6.2

6.2

310.2

10.0

615

Feb.

6.2

6.2

6 .2

6.0

670

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.5

6.8

6.8

7.0

7.0

7.0

7.0

7.0

7.2

8.8

12

15

IS

14

-

211.7

7.56

420

Mar.

14

T4

14

14

15

15

16

50

87

82

80

127

125

125

125

150

172

164

164

160

160

160

158

156

156

158

160

182

196

200

206

3,605

116

7,150

Apr.

214

216

220

238

255

*325

346

361

370

448

586

*755

780

775

750

725

695

675

455

312

290

265

258

243

233

233

221

181

191

201

11,817

394

23,440

May

205

239

270

318

377

377

374

374

374

374

371

371

297

262

262

227

*E09

209

211

211

211

207

203

201

199

199

165

133

120

116

114

7,780

251

15,430

June

136

141

142

142

141

108

141

138

*135

130

126

118

105

105

116

128

131

148

152

138

132

126

122

108

113

*141

140

138

135

132

3,908

130

7,750

July

132

126

153

160

152

147

142

136

132

138

138

130

101

T25

152

142

141

140

138

138

138

136

135

134

134

134

132

117

116

116

114

4,169

134

8,270

Aug.

114

112

112

111

110

127

142

141

128

122

*120

112

*105

104

104

102

101

104

117

116

114

112

.114

106

98

95

87

85

84

75

60

3,334

108

6,610

Sept.

58

58

58

54

47

47

46

46

46

45

50

64

64

63

69

74

74

73

65

50

48

48

47

46

46

*46

46

46

44

39_

1,607

53.6

3,190

Calendar year 1956: Max 735 Min 6.8 Mean 141 Ac-ft 102,100

Water year 1956-57: Max 780 Min 6.0 Mean 107 Ac-ft 77,250

* Discharge measurement made on this day.

Note.--Shifting-control method used May 27 to June 25, July 3 to Sept. 18.
BURNT RIVER BASIN 197

Burnt River near Bridgeport, Oreg.

Location Lat 44°32'20", long 117 0 41'20", in SW£ sec. 3, T. 12 S. , R. 41 E. , on left 

bank half a mile downstream from Dark Canyon, 4f miles upstream from Deer Creek, and 

5 miles northeast of Bridgeport.

Drainage area. 650 sq mi, approximately.

Records available.--October 1956 to September 1957.

Gage. Water-stage recorder. Datum of gage is 3,223.22 ft above mean sea level (levels 

by Bureau of Reclamation).

Extremes. Maximum discharge during year, 1,270 cfs Feb. 26 (gage height, 5.43 ft); 

minimum daily, 16 cfs Jan. 25.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. Plow regulated by Unity Reservoir (see p. 195). Many diversions for irrigation above station.

Rating tables, water year 1956-57, except periods of ioe effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 13 Apr. 14 to Sept. 3O

0.9 

1.1 

1.4 

1.9 150

2.5 290

3.5 580

5.0 1,100

1.3

1.6 

2.0

3.0 390

4.0 720

5.0 1,100

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

a48

a48

a 48

*50

48

46

47

48

47

45

47

60

55

55

53

55

57

55

55

58

58

53

52

51

52

54

58

57

54

59

59

1,632

52.6

3,240

Nov. *

54

52

51

50

50

48

47

47

46

45

45

45

45

*39

37

37

36

36

b30

b34

b34

b32

b34

b38

b40

b42

*b42

b40

b44

b42

1,262

42.1

2,500

Dec.

b42

b40

b42

b36

b36

b30

b26

a30

a40

a50

a55

a60

a55

a50

a 50

a55

a50

a55

a 46

*38

b36

b32

b36

b40

b36

32

b32

b30

b32

b30

b32

1,254

40.5

2,490

Calendar year 1956: Max -

Jan.

b30

b34

b40

b36

b44

b50

b55

59

b65

b70

73

75

62

53

41

b36

b40

b36

a34

b36

b38

b32

b26

b20

bl§

a 18

a!7

a 20

a26

a30

a22

1,234

39.8

2,450

Feb.

a24

a32

a30

a22

*b!9

b20

al9

a!9

a20

a!9

a20

a20

a!9

a24

a28

a26

a24

a36

a 32

a28

a24

a30

a 100

aSOO

*a750

1,090

*715

462

-

4,152

148

8,240

Mar.

221

150

120

TOS" 106

120

148

198

230

258

221

200

189

211

209

204

202

226

235

235

*242

238

230

223

223

223

223

216

218

248

290

6,365

205

12,620

Apr.

305

298

285

288

300

330

376

394

436

454

493

*664

814

888

580

868

860

839

818

772

548

456

414

372

345

325

305

290

275

- ..A4.?

14,938

498

29,630

May

242

253

278

308

345

393

462

T56

450

447

-450

438

429

384

315

312

*330

318

305

3OO

280

265

255

238

231

211

206

181

158

137

T5T

9,514

307

18,870

June

127

116

121

123

119

123

137

155

125

155

147

147

141

143

135

139

145

135

137

151

160

155

153

145

133

133

143

*141

114

__110

4,158

139

8,250

July

106

110

112

110

118

116

121 Tie

114

110

112

108

105

101

91

93

96

91

90

88

86

84

84

84

78

76

73

72

71

71

£4

2,953

95.3

5,860

Aug.

64

66

66

60

61

59

55

35

56

62

58

60

64

*67

61

61

55

61

66

70

68

66

70

72

72

72

72

80

82

85

as

2,054

66.3

4,070

Sept.

76

7S

73

72

72

70

62

54

55

51

49

51

52

50

54

53

51

53

52

51

51

51

49

49

48

*48

48

47

IS

47

1,662

55.4

3,300

Min - Mean - Ac-ft -

Water year 1956-57: Max 1.09O Min 16 Mean 14O Ac-ft 101,500

Peak discharge (base, 350 cfs).--Feb. 26 (4 to 5 a.m.) 1,27O cfs (5.43 ft)j Apr. 14 (11 a.m.)

908 efs (4.52 ft); Hay 7 (l to 5 p.m.) 468 efs (3.26 ft).__________________________________

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range In stage, weather records, 

and records for stations near Hereford and at Huntington.

b Stage-discharge relation affected by ice.
L98 BURNT RIVER BASIN

Burnt River at Huntington, Oreg.

Location. Lat 44°21'30", long 117°16'20", in NEf sec. 13, T. 14 S., R. 44 E., on right 

bank half a mile northwest of Huntington and 85 miles upstream from mouth.

Drainage area.--1,093 sq mi.

Records available.--September 1928 to September 1932, October 1956 to September 1957.

gage .'--Water-stage recorder. Datum of gage is 2,104.75 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Sept. 13, 1928, to Sept. 30, 1932, staff 

gage at site 200 ft upstream at different datum.

Extremes. Maximum discharge during year, 2,190 cfs Feb. 26 (gage height, 6.39 ft); min- 

 imum, 19 cfs Dec. 8 (gage height, 0.99 ft), but may have been less during periods of 

ice effect or no gage-height record.

1928-32, 1956-57: Maximum discharge, that of Feb. 26, 1957; no flow at times.

Remarks.--Records good. Flow regulated since 1938 by Unity Reservoir (see p. 195). 

Diversions for irrigation of about 28,000 acres above station.

Rating tables, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 14 Apr. 15 to Sept. 30

1.0 19

1.2 31

1.5 67

1.9 147

2.5 310

3.5 680

5.0 1,400

6.0 1,960

1.1 

1.4 

1.7

34

64

113

2.3 

3.0 

4.0

260

490

900

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

TotaJ

Mean

Ac-ft

Oct.

64

64

*66

64

57

46

43

46

48

51

64

95

88

77

76

77

79

aSO

a85

a90

a90

84

82

81

86

90

94

94

90

107

TCs

2,363

76.2

4,690

Nov.

95

9T

90

88

86

86

86

86

84

82

82

82

82

*79

67

67

69

63

57

51

54

53

49

49

47

45

42

36

45

42

2,036

67.9

4,040

Dec.

40

52

37

45

45

43

34

28

48

56

81

129

120

105

86

81

72

76

70

*70

69

51

56

66

49

72

79

72

59

54

61

2,006

64.7

3,980

Jan.

57

60

54

b50

b55

b60

b65

b75

b85

b90

b9£ b^O"

bSO

66

b50

b46

b40

a42

a40

a38

a40

a36

a30

a24

a20

a22

a20

a24

a30

a36

a32

1,552

50.1

3,080

Feb.

a36

a38

a36

a34

*b36

b30

b26

b25 b26"

b25

b28

b28

b26

b30

b36

b34

b32

b44

b42

b40

b36

52

163

829

1,170

*1,760

*1,140

726

6,528

233

12,950

Mar.

430

310

256

233

265

242

298

358

392

358

344

328

295

289

295

316

316

304

319

319

*331

328

316

304

307

304

304

304

310

344

389

9,808

316

19,450

Apr.

400

396

382

375

386

414

428

438

462

473

492

612

716

845

890

880

845

840

800

792

672

536

469

438

410

388

364

357

344

320

16,164

539

32,060

May

308

302

341

371

406

427

490

494

490

480

476

466

469

476

472

410

*385

427

455

424

392

378

357

341

326

302

281

263

235

220

2C>5

11,869

383

23,540

June

182

172

152

148

133

133

150

215

210

202

182

172

165

165

172

168

168

170

158

16S

175

178

168

162

142

140

*150

145

135

122^

4,902

163

9,720

July

117

157

107

107

105

104

107

107

94

91

91

89

91

89

84

78

78

80

74

70

70

72

75

80

75

70

68

63

63

63

58.

2,627

84.7

5,210

Aug.

58

57

63

65

60

54

56

51

49

46

45

48

51

*49

46

42

47

44

41

sT

59

58

60

75

77

74

64

67

83

83

89

1,812

58.5

3,590

Sept.

80" 92

77

77

80

80

68

59

56

52

52

52

52

51

51

54

48

47

49

51

51

48

49

41

43

38

*38

36

37

38

1,647

54.9

3,270

Calendar year 1956: Max - Min - Mean - Ac-ft

Water year 1956-57: Max 1,760 Min 20 Mean 173 Ac-ft 125,600

Peak discharge (base, 50O cfs). Feb. 26 (5:30 p.m.) 2,190 cfs (6.39 ft); Apr 

(4.10 ft); May 18 (8:30 p.m.) 568 cfs (3.22 ft).

14 (8 p.m.) 950 cfs

' Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage, weather records,

nd records for stations at Bridgeport and near Hereford,

b Stage-discharge relation affected by ice.
POWDER RIVER BASIN 199

Powder River near Baker, Oreg.

Location. Lat 44°39 I 20", long 117 0 52'30 M , in NE^ see. 36, T. 10 S., R. 39 E., on right 

bank 700 ft downstream from Stices Gulch and 8| miles south of Baker.

Drainage area. 219 sq mi.

Records available.--December 1903 to August 1914, July 1926 to September 1957. Monthly 

discharge only for some periods, published in WSP 1317. Published as "near Baker 

City" December 1903 to December 1905, and as "at Salisbury" January 1906 to August 

1914, October 1928 to September 1951.

Gage. Water-stage recorder and concrete bag-filled control. Datum of gage is 3,632.31 

Ft above mean sea level, datum of 1929, supplementary adjustment of 1947. Dec. 20, 

1903, to Feb. 29, 1912, staff gage at site 400 ft upstream at different datum. 

Mar. 1, 1912, to Aug. 1, 1914, and June 16, 1926, to Oct. 16, 1933, staff gage at 

site 0.4 mile downstream at different datum.

Average discharge.--40 years (1904-13, 1926-57), 112 cfs (81,080 acre-ft per year).

Extremes. Maximum discharge during year, 701 cfs May 19, June 3 (gage height, 4.32 ft); 

maximum gage height, 5.78 ft Feb. 24 (ice Jam); minimum discharge, 6.5 cfs Sept. 10, 

15, 16 (gage height, 1.09 ft).

1903-14, 1926-57: Maximum discharge, 1,820 cfs Mar. 20, 1910 (gage height, 

7.05 ft, site and datum then in use, from graph based on gage readings), from rating 

curve extended above 660 cfs; no flow Aug. 31, 1909, Sept. 7, 1931.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Slight regulation by mining operations above station. Many small 

diversions for irrigation above station. At times Auburn ditch diverts water into 

the basin above station.

Revisions (water years).--WSP 813: 1935. WSP 1093: Drainage area. WSP 1397: 1904-13, 

1929-31, 1940, 1942, 1949-50.

Rating tables, water year 1956-57, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Backwater from beaver dam Oct. 1-4)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 3O

1.1 

1.3 

1.5

1.7 

2.0

59

104

35

1.1 

1.3 

1.5

6.9

19

39

2.0 

3.0 

5.0

116

325

905

Discharge, in cubic feet pep second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

9.2

972

9.2

*9.6

10

10

9.6

10

11

14

16

18

15

14

13

13

13

13

14

14

*14

14

14

14

18

22

23

21

20

26

ZT_

457.8

14.8

908

Nov.

22

22

22

23

24

25

26

26

26

26

26

26

27

*26

26

25

24

20

20

24

26

28

27

26

25

24

23

23

24

25

737

24.6

1,460

Dec.

22

23

23

25

22

20

19

18

25

39

90

129

Tl3

91

78

70

67

61

*56

52

46

42

45

40

38

36

35

38

36

35

38

1,472

47.5

2,920

Jan.

38- 40

35

30

30

30

32

31

30

30

30

32

34

35

30

25

20

22

25

30

28

30

25

20

18

TB- 15

18

20

20

22

840

27.1

1,670

Feb.

25

24

25

30

26

*25

26

28

25

26

30

28

27

26

28

30

30

28

26

25

30

56

155

320

,144

262

260

214

-

1,979

70.7

3,930

Mar.

176

144

130

120

138

142

200

308

299

242

202

186

153

134

134

138

134

134

140

*157

153

138

al25

a!20

al!5

a!15

a!20

al50

a200

a300

a400

5,347

172

10,610

Apr.

365

292

278

262

*306

392

342

306

299

352

542

524

497

452

415

378

360

332

318

330

318

299

287

271

242

216

198

212

308

461

10,154

338

20,140

May

536

584

581

557

620

584

524

557

635

629

626

635

650

629

554

515

*491

593

671

563

464

398

355

338

528

342

365

388

485

488

488

16,173

522

32,080

June

533

647

671

626

575

539

464

*455

392

330

292

251

231

233

240

206

182

161

149

140

134

125

118

108

93

*86

85

75

69

.60

8,270

276

16,400

July

56

56

55

54

52

49

49

47

46

42

39

37

38

36

35

32

30

29

28

28

27

29

30

27

26

27

26

24

23

21

2T

1,119

36,1

2,220

Aug.

!§ 19

18

18

17

16

16

14

14

13

*13

14

*14

14

13

13

13

13

13

12

10

11

11

11

10

10

9.4

974

10

13

11

410.8

13.3

815

Sept.

10

8.9

8.9

8.9

8.4

7.9

7.9

7.9

7.4

6.9

6.9

7.4

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

7.4

7.4

7.9

223.6

7.45

444

Calendar year 1956: Max 1,240 Min 8.5 Mean 174 Ac-ft 126,200

Water year 1956-57: Max 671 Min 6.9 Mean 129 Ac-ft 93,600

Peak discharge (base, 300 cfs). Feb. 24 (3 p.m.) 506 cfs (3.67 ft); Mar. 9 (1O:30 p.m.) 358 cfs 

(3.13 ft); Apr. 1 (time unknown) 418 cfs (3.37 ft); Apr. 6 (8 a.m.) 410 cfs (3.34 ft); Apr. 11 

(1:30 a.m.) 569 cfs (3.88 ft); May 19 (6 a.m.) 701 cfs (4.32 ft); June 3 (10 a.m.) 701 cfs 

(4.52 ft) ._________________________________________________________________

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range in stage,

and records for station near Robinette.

Note.--Stage-discharge relation affected by ice Nov. 17-19, Nov. 23 to Dec. 9, Dec. 11, Dec. 19 tc

Feb. 21, Feb. 24.
200 POWDER RIVER BASIN

Powder River near Robinette, Oreg.

Location.--Lat 44°46'10", long 117"04'10" , in E| sec. 22, T. 9 S., R. 46 E., on left 

bank 2^ miles northwest of Robinette and 2\ miles upstream from mouth.

Drainage area. 1,660 sq mi, approximately.

Records available.--September 1928 to September 1957 (discontinued).

Gage.--Mater-stage recorder. Datum of gage is 1,937.01 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Aug. 24, 1936, staff gage at site 

half a mile upstream at different datum. Aug. 24, 1936, to Oct. 31, 1948, staff gage 

at site 50 ft upstream at present datum.

Average discharge.--29 years, 534 cfs (386,600 acre-ft per year).

Extremes. Maximum discharge during year, 4,570 cfs May 18 (gage height, 5.72 ft); mini- 

 mum, 82 cfs Sept. 8 (gage height, 0.33 ft).

1928-57: Maximum discharge, 5,500 cfs May 27, 1956 (gage height, 6.38 ft); minimum observed, 18 cfs Sept. 2-10, 1931.

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

Many diversions for irrigation above station. One canal with capacity of about 5 cfs 

diverts around station on left bank. Plow partly regulated by several reservoirs, 

the largest being Thief Valley Reservoir near North Powder (capacity, 17,400 acre-ft).

Revisions (water years). WSP 1217: Drainage area. WSP 1397: 1929, 1936, 1949.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

1.1 

1.5

164

300

490

2.0 

3.0 

4.0 

6.0

780

1,540

2,500

4,960

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

HI

22

23

H4

25

26

27

28

H9

30

31

Total

Mean

Ac-ft

Oct.

148 

143

*138

141

138

T36- 133

146

143

146

195

236

228

205

195

195

192

205

212

205

199

199

208

205

232

253

2BS

225

199

208

202

5,863

189

11,630

Nov.

181 

170

178

175

172

184

186

1ST

178

178

178

178

184

178

*172

175

186

178

148

143

156

167

167

161

159

156

156

146

161

161

5,093

170

10,100

Dec.

151 

159

159

172

159

151

131

113 156"

170

239

340

358

TfZ

236

228

208

21S

*215

199

202

159

195

195

167

148

141

164

159

b200

5,920

191

11,740

Jan.

b240 

b260

250

228

b200

b!90

b220

b260

b220

260

276

280

288

292

280

208

141

T56~ 131

246

b220

327

350

327

250

192

b!80

b200

b220

b200

b240

7,332

237

14,540

Feb.

b280 

b260

b240

b2"8U

b260

*b240

b260

b280

b240

b260

276

280

272

268

272

284

296

276

264

250

242

256

1,010

2,060

1,730

3.350

2,900

1,950

18,836

673

37,360

Mar.

1.550 

1,360

1,170

1,100

1,090

1,160

1,420

1,490

1,460

1,360

1,320

1,260

1,120

1,020

955

976

948

906

920

899

899

*857

822

787

768

768

768

794

871

1,130

1,390

33,318

1,075

66,090

Apr.

1,440 

1,320

1,280

1,240

1,280

1,440

1,440

1,360

1,380

1,420

1,410

1,480

1,600

1,740

1,840

1,770

1,640

1,560

1,490

1,420

1,440

1,390

1,340

1,310

1,220

1,120

1,020

990

1,T20~

1,360

41,860

1,395

May

1.560 

1,800

1,850

2,040

2,090

2,090

2,110

2,220

2,310

2,390

2,580

2,900

2,940

2,880

2,740

 2,750

2,650

3,590

3,740

3,170

2,790

2,490

2,300

2,140

1,970

1,870

1,830

1,880

1,940

1,990

2,200

73,800

2,381

83,030 146,400

June

2,370 

3,020

3,260

3,340

3,590

3,260

2,750

2,810

2,310

1,970

1,790

1,640

1,530

1,330

1,100

969

906

906

955

906

780

732

702

732

702

678

*684

720

648

606

47,496

1,583

94,210

July

564

535

505

480

455

435

400

381

354

340

300

296

300

300

253

250

250

236

202

189

195

186

181

164

148

148

141

129

122

117 

TTT

8,673

280

17,200

Aug.

113 

115

120

124

133

133

141

146

138

138

136

133

129

124

*115

111

107

117

113

115

113

109

111

109

101

9399-

115

117

126

131

3,725

120

7,390

Sept.

117 

111

109

99

95

97

103

103

"9T 93

97

103

107

103

105

109

115

120

124

131

T29~ 133

122

122

120

113

101

101

103

99

3,281

109

6,510

Calendar year 1956: Max 4.95O Min 113 Mean 894 Ac-ft 648,600

Water year 1956-57: Max 3,740 Min 93 Mean 699 Ac-ft 506,200

Peak discharge (base, 1,100 cfs). Feb. 26 (9 a.m. to 1 p.m.) 3.65O cfs (5.O1 ft): Mar. 9 (11 a.m.) 

1,520 cfs (2.97 ft); Apr. 15 (4 to 8 a.m.) 1,850 cfs (3.37 ft); May 18 (12 p.m.) 4.57O cfs 

(5.72 ft); June 6 (12:30 a.m.) 3.8OO cfs (5.13 ft)._____________________________________ 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
SNAKE RIVER MAIN STEM 201

Snake River at Oxbow, Oreg.

Location. Lat 44°57' , long 116°51' , in NW£ sec. 16, T. 73., R. 48 E. , on left bank at 

Oxbow, five-eighths of a mile upstream from intake of diversion tunnel for former 

Oxbow powerplant and 2f miles upstream from Indian Creek.

Drainage area. 72,800 sq mi, approximately. 

Records available. May 1923 to September 1957.

Gage. Water-stage recorder. Datum of gage is 1,696.71 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Dec. 20, 1923, staff gage at same 

site and datum.

Extremes. Maximum discharge during year, 69,800 cfs May 23 (gage height, 19.70 ft); minimum, 7,490 cfs Jan. 30 (gage height, 7.07 ft).

1923-57: Maximum discharge, 89,700 cfs Apr. 28, 1952 (gage height, 23.10 ft); maximum gage height, about 29 ft (ice jam), from floodmark, sometime during period 

Jan. 17-27, 1949; minimum discharge, 4,890 cfs Aug. 6, 1924 (gage height, 6.30 ft).

Remarks. Records excellent. Flow regulated by many reservoirs above station. Diurnal 

fluctuation caused by Swan Falls powerplant. Diversions for irrigation of about 

2,594,000 acres above station (1946 determination).

Revisions (water years).--WSP 1347: 1925.

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

7.5

8.0

9.0

10.0

12.0

8,480

9,870

13,100

16,900

25,900

14.0

16.0

18.0

20.0

36,500

47,700

59,500

71,700

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

£3

£4

25

26

27

£8

29

30

31

Total

Mean

Ac-ft

Oct.

15,300

15,000

15,300

15,000

15,000

15,200

16,000

16,800

17,400

17,300

16,500

16,300

16,800

17,400

19,200

19,500

18,900

18,600

18,400

16,700

16,300

16,800

16,100

14,900 

15,800

17,600

19,300

20,500

18,800

16,900

18,900

528,500

17,050

tl,048

Nov.

19,600

18,000

16,900

16,000

17,300

16,500

16,900

*17,100

18,100

17,800

17,600

16,900

14,800

16,400

16,900

16,800

16,500

15,300

13,600

12,300

13,500

14,600

15,200

14,400 

14,000

14,600

14,700

*14,500

15,500

15,400

477,700

15,920

947,500

Dec.

15,800

15,800

15,300

15,000

14,200

13,800

15,200

15,300

16,100

16,100

14,700

15,800

17,400

16,500

16,700

16,300

16,900

16,900

16,800

15,900

16,100

16,200

16,700

18,100 

15,900

12,900

13,000

13,100

15,200

16, 900

17,000

487,600

15,730

967,100

Jan.

14,700

14,900

15,100

14,000

15,300

15,400

14,900

13,900

*14,500

15,200

15,700

15,800

15,500

15,100

12,900

11,800

14,200

15,200

14,600

16,000

16,600

15,100

14,600

16,000 

14,100

13,100

12,400

12,100

11,500

9,140

16,500

445,840

14,380

884,300

Feb.

15,300

13,900

13,100

18,100

14,400

14,000

15,200

16,100

14,900

14,900

14,800

13,200

11,800

13,700

15,900

14,100

13,500

14,300

15,600

15,000

16,000

15,100

15,700

19,000 

45,000

62,400

* 63, 800

58,100

-

586,900

20,960

*1,164

Mar.

42,900

37, 300

34,200

32,400

32,500

33,800

32 , 400

38 , 200

40, 700

41,400

41,200

40,000

45,800

40,000

36,700

34,400

34,000

34,000

26,900

25,800

28,400

28,400

26,200

24,000 

24,400

24,300

27,500

28,700

30,200

30 500 31 ', 800

*1,027

33,130

*2,037

Apr,

*33,700

32,000

34,200

35,800

35,800

36,300

38,000

35,000

32,700

31,300

50,900

31 , 800

37,100

39,600

40,800

40,000

38,500

38 , 400

37,600

36,500

36,800

36,900

34,800

36,800 

36,500

37,000

35,000

34,500

33,100

35,100

*1,07£.5

35,750

*2,127

May

35,000

34,700

*32,000

33,600

35, 200

37,200

35,400

37 , 200

38,500

41,000

41 , 500

43,100

46,400

48,700

53,900

57,500

58,500

60,000

62,100

68,100

66,400

66,900

68,900

67,000 

67,200

63, 300

60,000

57,000

*55, 300

53,600

48,800

*1,574

50,770

*3,122

June

45,700

45, 400

45,300

44,800

42,200

43,500

43,000

39,800

39,300

38 , 800

36,300

34,800

32 , 300

31 , 200

29,400

28,000

*26,000

24,300

23,200

20,800

20,000

18,700

17,500

16,500 

14,600

15,900

14,700

15,200

14,900

14,200

874,300

29,140

*1,734

July

13,300

13,800

12,700

1£,600

1£,500

1£,200

11,200

11,400

11,500

11,000

10,800

11,100

11,400

11,000

10,800

10,300

*1 1,000

11,200

10,900

10,900

11,700

11,500

11,700

11,900 

11,500

11,500

11,300

11,800

11,500

11,700

11,400

359,100

11,580

712,300

Aug.

11,300

11,300

11,000

11,300

11,900

12,100

11,200

11,200

11,200

11,900

11,900

11,900

11,700

11,400

12,000

11,000

11,000

11,600

11,900

12,400

11,700

12,000

12,200

*1 1,400 

11,300

11,900

11,000

11,800

12,500

12,200

13,400

362,600

11,700

719,200

Sept.

13,200

13,200

13,300

13,500

13,300

13,200

13,500

13,600

13,200

12,900

13,500

13,800

13,500

13,600

14,100

14,200

14,000

14,000

13,600

13,600

14,700

*15,100

14,700

14,900 

15,300

14, 600

14,800

15,000

14,500

14,000

418,400

13,950

829,900

Calendar year 1956: Max 57,500 Mln 10,800 Mean 23,120 Ac-ft 16,780,000

Water year 1956-57: Max 68,900 Mln 9,140 Mean 2£,510 Ac-ft 16,290,000

* Discharge measurement made on this day.

* Expressed In thousands.

503667 O - 59 - 14
202 SNAKE RIVER MAIN STEM

Snake River near Joseph, Idaho

Location. La t 45°49', long 116°45', in SWir sec. 18, T. 4 N., R. 49 E., on left bank at 

China Gulch, a quarter of a mile downstream from Mountain Sheep dam site, 0.7 mile 

upstream from Imnaha River, 0.9 mile downstream from Divide Creek, 13 miles west of 

Joseph, 22 miles west of Whitebird, and at mile 53.2 from Lewiston.

Drainage area. 73,800 sq mi, approximately.

Records available. April 1955 to September 1957.

Gage.e --Water-stage recorder. Datum of gage is 940.48 ft above mean sea level, datum of

T929, supplementary adjustment of 1947.

Extremes, --Maximum discharge during year, 76,700 cfs probably on May 23 (gage height, 

21.5 ft, from floodmarks, backwater from Imnaha River); minimum daily, 10,500 cfs 

Jan. 30.

1955-57: Maximum discharge, that of May 23, 1957; minimum, 9,940 cfs Aug. 19, 

1955 (gage height, 1.29 ft).

Remarks. --Records excellent except those for periods of backwater from Imnaha River and 

^Eose for periods of no gage-height record, which are good. Plow regulated by many 

reservoirs above station. Diurnal fluctuation caused by Swan Falls powerplant, 

Diversions for irrigation of about 2,613,000 acres above station (1946 determination),

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Z6

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

15,500

15,300

15,400

15,300

15,200

15,700

15,200

16,800

17,200

17,400

17,000

17,200

16,700

17,200

18,600

19,500

19,300 

18,800

18,600

1 7 , 800

16,700

16,800

17,200

15,900

15,500

17,400

18,900

20,200

20,500

18,000

534,600

17,250

*1,060

Nov.

20,400

18,900

18,200

15,900

17,800

17,600

16,700

1 7 , 500

18,400

18,300

18,000

*1 6,000

16,800

15,800

17,400

1 7 , 500

17,400 

16,800

15,200

13,400

13,200

15,000

15,500

15,800

14,200

15,500

15,200

15,100

15,500 

16,400

497,400

16,580

986,600

Dec.

16,000

16,500

16,200

16,000

14,700

15,000

14,800

15,800

15,900

16,800

16,200

15,400

18,000

18,300

17,300

17,600

17,600 

17,700

17,600

17,300

16,500

17,100

16,900

18,600

17,500

14,700

13,600

15,200

17^200

17,600

508,200

16,390

tl.008

Jan.

17,000

14,100

16,700

14,100

15,300

16,000

15,800

14,600

14,700

15,300

16,200

16,500

16,300

15,600

*15,000

11,700

13,500 

15,700

14,800

16,000

16,600

16,800

14,400

16,500

14,900

14,500

13,000

13,000

12,500

10,500

13,000

460,600

14,860

913,600

Feb.

16,400

14,700

14,500

16,900

16,200

13,900

14,800

16,100

15,600

15,100

15,000

14,800

11,400

13, 500

15,100

15,800

14,000 

14,300

15,600

15,300

16,400

15,600

16,200

17,800

38,000

66,000

66,000

62,000

-

597,000

21,320

$1,184

Mar.

55,000

42,000

37,000

34,000

*34,200

35,000

34,100

37,800

42,600

44,400

45,000

42,500

44,500

43,400

39,900

36,400

35,200 

36,000

31 , 300

26,200

29,700

29,900

28,200

26,000

25,600

26,200

27,000

29,900

30,500

32 900

*1,094.6

35,310

*2,171

Apr.

35,300

34,900

34,600

38,000

37,500

38,600

39,600

38,500

35,000

33,600

32,900

33,100

37,800

41,900

43,400

44.000

40^700

40,100

39,200

38,500

39,200

38,700

36,800

38,500

39,200

36,800

36 , 500

35,100

*36,900

«. ,135.6

37,850

*2,252

May

37,100

37,900

35,900

55,000

37,700

39,500

38,800

59,300

42,900

45,500

47,100

47,500

52 , 500

54,700

58,800

65,900

63,800 

65,000

68,000

72,000

71,000

72,000

74,000

72 000

72,' 000

68,000

64,000

62,000

59,000

57,000

54, 000

* 1,707. 9

55,090

*3,388

June

51,000

48,000

48,000

47,000

46,000

46 , 000

46 , 000

45,000

42,000

41 , 000

40,000

38,000

36,000

34,000

32,000

30,000

28,000 

27,000

25,100

*23,000

21,800

21,100

19,200

18,600

16,700

15,600

15.400

16, 100

16,900

15,700

950,200

31,670

$1,885

July

15.000

14,700

14,300

13,700

13,600

13,500

12,500

12,100

12,300

11,900

11,300

11,800

11,700

11,800

11,600

11,200

10,800 

11,500

11,800

11,200

11,700

12,100

12,200

12,200

12,200

12,100

11,700

12,200

11,800

12,200

'

380,700

12,280

755,100

Aug.

11,700

11,800

11,600

11,300

12,300

12,700

12,100

11,700

11,400

12,100

12,200

12,400

12,700

*1 1,300

12,700

11,800

11.200 

11,500

12,200

12,700

12,700

11 , 900

12,700

11,900

11,300

12,100

11,200

11,600

12,500

12,500

15,500

373,100

12,040

740,000

Sept.

13,700

13,300

13,700

15,400

14,200

13,200

13,600

13,800

15,800

13,200

12,800

14,800

13,800

13,800

13,700

15,200

14,100 

14,600

14,300

13,600

14,500

15,000

15,500

14,800

15,100

15,200

14,700

15,300

15,200

14,600

426,500

14,220

846,000

Calendar year 1956: Max 62,800 Min 10,700 Mean 24,030 Ac-ft 17,450,000

Water year 1956-57: Max 74,000 Min 10,500 Mean 23,740 Ac-ft 17,190,000

* Discharge measurement made on this day.

* Expressed in thousands.

Note.--No gage-height record Jan. 27-31, Feb. 3, Feb. 26 to Mar. 4, May 18 to June 18; discharge 

estimated on basis of weather records and records for station at Oxbow and nearby streams. Stagedischarge relation affected by backwater from Imnaha River Dec. 11-20, Feb. 23-25, May 1-17, 

June 24 to July 30.
IMNAHA RIVER BASIN 203

Imnaha River at Imnaha, Oreg.

Location. Lat 45°34', long 116°50' , in SWv sec. 16, T. IN., R. 48 E., on left bank at 

Imnaha, three-eighths of a mile downstream from Sheep Creek.

Drainage area. 640 sq mi, approximately. 

Records available.--June 1928 to September 1957.

Gage. Water-stage recorder. Datum of gage is 1,941.14 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Aug. 6, 1934, staff gage at site a 

quarter of a mile upstream at different datum.

Average discharge. 29 years, 488 cfs (353,300 acre-ft per year).

Extremes. Maximum discharge during year, 6,650 cfs May 19 (gage height, 6.80 ft); minimum, 46 cfs Jan. 27 (gage height, 1.31 ft).

1928-57: Maximum discharge, that of May 19, 1957; minimum observed, 16 cfs Nov. 22, 

1931.

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

Diversions for irrigation of 4,000 acres above station. Since 1934, one diversion 

of less than 10 cfs around station for irrigation below station. Water is diverted 

from Sheep Creek and tributaries above station for irrigation of 6,500 acres in Wallowa 

River basin.

Revisions (water years). WSP 

1932(M), 1949.

1938. WSP 1217: Drainage area. WSP 1397: 1929,

Hating tables, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

Oct. 1 to May 18 May 19 to Sept. 30

2.3 

3.0

139

285

620

3.5 

4.0 

5.0 

6.0

970

1,430

2,810

4,560

1.7 

2.1 

2.5 

3.0

123

234

400

680

3.5 

4.5 

6.3

1,070

2,220

5,400

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

180

177

174

172

172

172

169

T69

172

172

234

244

224

198

187

185

182

187

204

187

182

177

187

193

182

193

212

198

190

207

215

5,897

190

11,700

Nov.

193

190

196

198

198

204

218

*218

218

224

231

228

234

224

198

221

228

215

177

180

228

207

193

196

190

187

180

162

IeS

187

6,092

203

12,080

Dec.

177

190

207

207

180

172

137

bllO

blSO"

210

293

301

321

3155

293

285

268

*264

257

250

220

201

blSO

b200

190

187

187

182

193

198

207

6,752

218

13,390

Jan.

201

201

196

137

112

106

146

180

167

162

b200

207

20T

204

196

134

blOO

84

bllO"

b!70

b200

190

187

169

146

137

86

blOO

b!20

blOO

*b!50

4,805

155

9,530

Feb.

b200

blSO

b!90

207

190

182

172

169

167

162

159

TS2

162

159

172

174

174

185

196

190

187

190

296

805

1,060

1,500

1,360

946

-

9,836

351

19,510

Mar.

764

662

572

515

480

435

440

475

550

560

545

520

470

*425

401

396

401

392

40T

440

470

455

425

420

425

415

406

406

430

490

540

14,726

475

29,210

Apr.

540

510

505

495

545

614

614

590

596

656

701

757

813

994

1,280

1,110

1,000

922

922

890

938

1,000

1,010

946

855

778

715

736

986

1,430

24,443

815

48,480

May

*1,650

1,840

1,960

1,980

1,900

1,890

1,870

1,910

2,300

2,320

2,510

3,490

4,040

3,910

3,750

3,56O

3,080

3,840

5,260

4,500

*3,430

2,760

2,450

2,220

2,030

1,940

1,940

1,990

2,080

2,020

2,070

82,490

2,661

163,600

June

2,110

2,450

2,560

2,420

2,400

2,480

2,050

2,140

1,850

1,570

1,460

*1,340

1,290

1,200

1,110

998

940

940

1,020

1,020

924

 860

806

860

844

828

836

884

836

785

41,811

1,394

82,930

July

736

TOT

694

638

614

620

590

554

524

512

495

480

460

44O

425

415

396

368

350

342

332

337

314

302

290

278

270

259

259

*252

241

13,488

435

26,750

Aug.

234

22T

218

208

204

227

221

211

201

198

195

192

181

181

181

175

172

169

167

164

162

162

162

156

154

151

TBT

156

162

162

159

5,663

183

11,230

Sept.

154

T49

141

139

141

137

137

134

137

137

*134

134

132

130

130

130

130

139

146

141

134

132

132

128

125

125

123

123

125

125

4,024

134

7,980

Calendar year 1956: Max 3,980 Min 110 Mean 742 Ac-ft 538,600

Water year 1956-57: Max 5,260 Mln 84 Mean 603 Ac-ft 436,400

Peak discharge (base, 1,300 cfs).--Feb. 26 (7:30 p.m.) 1,930 cfs (4.42 ft): Apr. 15 (2 to 5 a.m.) 

1,370 cfs (3.94 ft); May 19 (3 a.m.) 6,650 cfs (6.80 ft); June 3 (3 a.m.) 2,850 cfs (4.92 ft).

* Discharge measur 

b Stage-discharge

rcent made on this day. 

elation affected by Ice.
204 SALMON RIVER BASIN

Valley Creek at Stanley, Idaho

Location. Lat 44°13i, long 114°56', in sec. 3, T. 10 N., R. 13 E., on left bank a quarter

 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 sq mi.

Records available. --December 1910 to April 1911 (gage heights only), May 1911 to October 

1913, May 1921 to September 1957. Monthly discharge only for some periods, published 

in WSP 1317.

Gage. --Water-stage recorder. Datum of gage is 6,221.81 ft above mean sea level, datum of

 1929. Prior to May 28, 1911, staff gage at site a quarter of a mile upstream and

May 28, 1911, to Oct. 31, 1913, at site three-quarters of a mile upstream, at different 

datums. May 2, 1921, to Apr. 30, 1949, staff gage at present site and datum.

Average discharge. 38 years (1911-13, 1921-57), 198 cfs (143,300 acre-ft per year).

Extremes . - -Maximum discharge during year, 1,460 cfs June 6 (gage height, 3.34 ft); mini-

 mum, 69 cfs Mar. 14 (gage height, 0.78 ft), but may have been less during period of ice

1910-13, 1921-57: Maximum discharge, 2,000 cfs May 24, 1956 (gage height, 3.92 ft); 

minimum, 40 cfs (estimated) Nov. 17-30, 1929, Dec. 8-13, 1932.

Remarks . --Records excellent except those for period of ice effect, which are fair. 

sion for irrigation of about 590 acres above station.

Revisions (water years) . WSP 362: 1911-12.

DiverRating table, water year 1956-57, except period of Ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

0.8 

1.0

1.2

95

134

1.5 

2.0 

2.5

216

428

720

3.0 

3.5

1,110

1,580

'Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6 

7

8

9

1O

11

12

13

14

15

16

17

18

19

2O

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

119

119

117

117

119

117

115

117

121

128

177

1ST

139

128

m

121

119

121

130

121

121

115

124

121

117

130

139

121

111

ITS

117

3,856

124

0.705

0.81

7,650

Nov.

*121

113

113

113

121

126 

124

113

117

111

115

109

113

95

92

111

119

111

94

97

102

106

102

100

97

94

92

90

9Z

95

3,198

107

0.608

0.68

6,340

Dec.

95

99

~3S 100

100

94 

92

*86

92

95

100

100

100

100

100

100

96

98

96

92

90

90

92

90

86

88- 84

90

90

92

92

2,918

94.1

0.535

0.62

5,790

Jan.

92

90

85

80

80

84 

90

90

90

90

95

100

100

95

90

80

80

80

85

92

94

*92

90

88

84

78

76

78

84

90

95

2,717

87.6

0.498

0.57

5,390

Feb.

94

92

90

88

86

SB- 85 

85

85

85

85

85

85

85

86

86

86

86

86

86

88

88

90

97

90

94

~S7 102

2,477

88.5

0.503

0.52

4,910

Mar.

100

100

95

92

94

*97 

94

100

100

94

92

99

95

89

97

95

94

94

90

90

92

89

89

90

94

89

90

92

94

95

99

2,914

94.0

0.534

0.62

5,780

Apr.

97

97

99

99

104

109 

104

102

106

113

119

1Z6

124

139

*148

148

148

144

153

163

180

197

230

226

191

180

191

234

299

365

4,735

158

0.898

1.00

9,390

May , 553" 433

612

552

593

769 

853

825

860

853

846

*940

940

1,050

996

1,000

924

972

1,160

964

776

681

643

612

599

624

681

748

811

908

980

24,798

800

4.55

5.24

49,190

June

1,020

1,070

1,240

1,31O

1,380

1,410 

1,290

1,230

1,15O

*964

868

846

860

776

668

576

513

480 486"

541

558

513

480

486

502

508

502

53O

541

547

23,845

795

4.52

5.04

47,300

July

547

52T

4 SO

433

399

389 

384

365

*342

329

320

312

307

290

270

251

237

226

216

21O

204

197

197

185

180

180

172

166

166

161

156

8,795

284

1.61

1.86

17,440

Aug.

151

141

136

134

130

130 

128

124

121

115

111

109

*106

106

104

104

104

102

100

97

97

97

95

95

94

95

94

95

100

104

106

3,425

HO

0.625

0.72

6,790

Sept.

109

1ST

104

1O2

99

95 

95

94

95

97

95

95

95

94

94

94

94

*99

104

102

100

97

95

95

94

92

90

89

89

90

2,891

96.4

0.548

0.61

5,730

Calendar year 1956: Max 1,900 Min 84 Mean 312 Cfsm 1.77 In. 24.17 Ac-ft 226,800

Water year 1956-57: Max 1,410 Min 76 Mean 237 Cfsm 1.35 In. 18.29 Ac-ft 171,700

Peak discharge (base, 600 cfs).--May 14 (9 p.m.) 1,340 cfs (3.23 ft); June 6 (10 a.m.) 1,460 cfs 

(5.34 ft).____________ _____

Discharge measurement made on this day. 

Note. Stage-discharge relation affected by Ice Dec. 6 to Feb. 22.
SALMON RIVER BASIN 205

Salmon River below Valley Creek, at Stanley, Idaho

Location. Lat 44°14', long 114°55', in SE^SE^ sec. 34, T. 11 N., R. 13 E., on left bank 

three-quarters of a mile downstream from Valley Creek and If miles northeast of upper 

Stanley.

Drainage area. 535 sq mi.

Records available.--July 1925 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 6,190.32 ft above mean sea level, datum of 

1929. Prior to Oct. 13, 1925, staff gage at same site and datum.

Average discharge. 32 years, 663 cfs (480,000 acre-ft per year).

Extremes. Maximum discharge during year, 4,480 cfs June 6 (gage height, 4.27 ft); minimum daily, 280 cfs Jan. 17.

1925-57: Maximum discharge, 5,070 cfs May 27, 1956 (gage height, 4.62 ft); minimum, 

100 cfs (estimated) Nov. 20-30, 1929.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are fair. Diversions above station for irrigation of about 6,000 acres.

Rating table, water year 1956-57, e 

height, in feet, and discharg

cept periods of ice effect (gage 

, In cubic feet per second)

0.9 

1.0 

1.2 

1.5

280

320

430

660

2.0 

3.0 

4.0 

4.5

1,170

2,450

4,020

4,870

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsra

In.

Ac-ft

Oct.

451 

444

437

444

451

451

451

451

460

470

590

580

520

500

500

500

490

490

500

490

480

470

490

480

470

520

560

490

460

510

15,100

487

0.910

1.05

29,950

Nov.

*500 

479

479

486

500

516

508

486

479

479

486

465

479

444

418

486

508

493

412

424

437

465

444

430

424

418

412

406

IT?

418

13,793

460

0.860

0.96

27,360

Dec.

412

430

450

450

440

430

410

*370

410

430

440

450

460

45TJ

420

440

406

424

406

382

394

365

382

394

365

355

b345 375"

380

380

390

12,630

407

0.761

0.88

25,050

Jan.

390 

370

360

330

290

300

330

380

380

360

360

410

420

420

400

340

280

3oo

320

350

370

*b380

360

370

360

320

290

320

350

400

10,990

355

0.664

0.76

21,800

Feb.

380 

370

360

370

370

360

350

370

360

350

370

360

360

380

370

360

360

360

370

390

394

400

412

424

418

430

437

418

-

10,653

380

0.710

0.74

21,130

Mar.

406 

400

420

400

410

*376

400

406

406

400

388

418

406

382

406

400

400

394

388

388

388

376

370

376

382

370

370

376

376

382

382

12,142

392

0.733

0.84

24,080

Apr.

382 

376

382

382

388

400

388

394

394

400

406

424

418

444

*465

444

444

437

451

472

486

524

588

604

524

500

524

612

760

920

14,333

478

0.893

1.00

28,430

May

1.080 

1,360

1,500

1,410

1,470

1,800

2,000

2,060

2,180

2,300

2,340

*2,540

2,540

2,690

2,630

2,600

2,520

2,690

3,180

2,810

2,420

2,170

2,000

1,870

1,810

1,850

2,000

2,210

2,440

2,720

2,900

68,090

2,196

4.10

4.73

135,100

June

3,020 

3,260

3,660

3,950

4,240

4,410

4,220

3,990

3,710

*3,270

2,940

2,820

2,760

2,560

2,300

2,040

1,820

1,670

1,650

1,810

1,910

1,780

1,720

1,730

1,800

1,850

1,860

1,980

2,030

2,060

78,820

2,627

4.91

5.48

156,300

July

2,070 

2,040

1,930

1,780

1,680

1,590

1,540

1,460

*1,390

1,340

1,290

1,240

1,200

1,150

1,100

1,040

972

910

870

830

810

800

760

714

687

669

636

612

596

588

580

34,874

1,125

2.10

2.42

69,170

Aug.

572 

53?

516

508

493

479

479

465

451

437

424

418

*412

406

400

394

388

382

376

370

370

370

365

365

360

355

360

360

370

382

382

12,941

417

0.779

0.90

25,670

Sept.

382 

382

388

382

376

360

355

355

350

355

360

355

350

350

545

345

345

355

*382

376

370

376

370

388

400

400

388

382

382

382

11,086

370

0.692

0.77

21,990

Calendar year 1956: Max 4,970 Min 320 Mean 1,022 Cfam 1.91 In. 25.99 Ac-ft 741,800

Water year 1956-57: Max 4,410 Min 280 Mean 809 Cfsra 1.51 In. £0.53 Ac-ft 586,000

Peak discharge (base, 1,700 cfs).--May 19 (7 a.m.) 3,320 cfs (3.57 ft); June 6 (12:30 a.m.)

4,480 cfs (4.27 ft).______________________________________________________________

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 9-31, Dec. 2-7, 9-16, Dec. 28 to Jan. 21, Jan. 23 to Feb. 20, 

Mar. 3-5; discharge estimated on basis of weather records, recorded range In stage, and records 

for other Salmon River stations.
206 SALMON RIVER BASIN

Salmon River below Yankee Fork, near Clayton, Idaho

Location.--Lat 44°16', long 114°44', in sec. 20, T. 11 N., R. 15 E., on left bank a

 quarter of a mile downstream from Sunbeam Dam and Yankee Fork and 18 miles upstream 

from Clayton.

Drainage area.--841 sq mi.

Records available. October 1921 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 5,900 ft (by barometer). Prior to

 Oct. 3, 1926, staff gage at site 200 ft downstream at datum approximately 1.5 ft 

higher. Oct. 3, 1926, to Sept. 2, 1927, staff gage and Sept. 3, 1927, to Nov. 5, 

1934, water-stage recorder, at site 200 ft downstream at approximately present datum.

Average discharge.--36 years, 985 cfs (713,100 acre-ft per year).

Extremes.--Maximum discharge during year, 7,670 cfs June 5 (gage height, 10.17 ft); minimum, 296 cfs sometime during period Jan. 15-21, while clock was stopped (gage height, 

1.80 ft), but may have been less during periods of ice effect.

1921-57: Maximum discharge, 10,300 cfs May 24, 1956 (gage height, 11.60 ft); minimum, 160 cfs-(estimated) Nov. 25-30, 1929.

Remarks.--Records excellent except those for periods of ice effect or no gage-height

record, which are good. Diversions above station for irrigation of about 6,000 acres.

Revisions (water years).--WSP 1347: 1931.

Rating table, water year 1956-57, except periods of Ice effect 

height, In feet, and discharge, In cubic feet per second)

1.9

2.5 

3.0 

4.0

337

590

820

1,380

5.0 

6.0 

7.0

2,090

2,910

3,830

8.0

9.0

10.2

6,080

7,710

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

608 

6O4

594

594

617

612

612

617

630

640

810 795"

720

689

680

684

676

666

694

666

662

644

671

666

653

707

761

666

626

684

698

20,646

666

0.792

0.91

40,950

Nov.

680 

*626

630

653

676

698

68O

648

653

644

662

640

658

586

530

622

658

630

521

530

560

581

564

547

530

526

517

513 52~6~

526

18,015

600

0.713

0.80

35,730

Dec.

521 

547

564

560

547

551

»b510

b460

bSOO

b550

b570

586

604

594

564

594

547

581

547

508

530

496

534

556

513

491

500

510

520

520

540

16,715

539

0.641

0.74

33,150

Jan.

530

520

500

430

380

410

440

500

500

450

450

540

540

520

520

450

340 370"

400

460

460

450

*b450

b460

b460

b410

b360

b400

b440

b460

b480

14,080

454

0.540

0.62

27..930

Feb.

b470 

b460

454

462

462

449

433

475

470

437

462

449

449

475

458

441

437

437

441

470

466

483

500

530

521

508

526

500

13,125

469

0.558

0.58

26,030

Mar.

483 

470

508

483

496

462

491

*504

504

487

458

504

487

445

496

5OO

487

479

466

466

479

437

441

445

462

433

424

454

454

462

470

14,637

472

0.561

0.65

29,030

Apr.

458 

454 466"

462

483

517

491

496

513

560

581

604

577

626

*671

671

680

671

671

707

734

785

910

955

830

770

775

945

1,300

1.640

21,003

700

0.832

0.93

41,660

May

1,840 

2,280

2,480

2,160

2,200

2,720

3,310

3,450

3,550

3,690

*3,660

3,960

4,310

4,510

4,410

4,280

4,290

4,520

5,220

4,620

3,930

3,470

3,220

3,030

3,010

3,250

3,670

4,120

4,550

5,' 360^

114,130

3,682

4.38

5.05

226,400

June

5,630 

6,130

6,740

7,220

7,560

7,490

6,980

6,520

*5,920

5,110

4,640

4,430

4,260

3,880

3,460

3,090

2,750

2,550

2,570

2,750

2,840

2,630

2,520

2,560

2,600

2,600

2,600

2,720

2,760

2,740

126,250

4,208

5.00

5.58

250,400

July

2.720 

2,640

2,470

2,300

2,130

2,010

1,950

1,860

1,770

*1,700

1,650

1,590

1,540

1,470

1,410

1,340

1,270

1,190

1,150

1,100

1,080

1,060

1,040

976

945

925

890

860

850

805

45,516

1,468

1.75

2.01

90,280

Calendar year 1956: Max 9,800 Mln 390 Mean 1,582 Cfsm 1.88 In. 25.62 Ac

Aug.

79O 

7ST

738

720

707

684

680

666

648

630

612

599

590

581

*586

564

560

543

538

526

521

526

521

521

504

504

508

508

526

543

551

18,438

595

0.707

0.82

36,570

Sept.

556 

577

543

538

521

504

491

491

487

496

500

496

487

483

479

479

479

496

*530

521

513

" 508

504

517

530

530

517

504

504

508

15,259

509

0.605

0.67

30,270

-ft 1,148,000

Water year 1956-57: Max 7,560 Mln 340 Mean 1,199 Cfsm 1.43 In. 19.36 Ac-ft 868^400

Peak discharge (base, 2,350 cfs). May 2 (12 p.m.) 2,800 cfs (5.88 ft); May 19 (8 a.m.) 5,400 cfs

(8.45 ft); June 5 (10 p.m.) 7,670 cfs (1O.17 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice. 

Note. No gage-height record Dec. 28 to Jan. 22; discharge estimated on basis of weather records, 

recorded range In stage, and records for station at Challls and other nearby streams.
SALMON RIVER BASIN 207

Salmon River near Challis, Idaho

Location. --Lat 44°23', long 114° 15", in sec. 7, T. 12 N., R. 19 E. , on left bank 250 ft 

downstream from Bayhorse Creek and 9 miles south of Challis.

Drainage area. --1,800 sq mi, approximately. 

Records available. --October 1928 to September 1957.

Gage . --Water-stage recorder. Datum of gage is 5,163.99 ft above mean sea level, datum of ~

Average discharge. --29 years, 1,450 cfs (1,050,000 acre-ft per year).

Extremes .--Maximum discharge during year, 12,700 cfs June 6 (gage height, 9.89 ft); minimum, 333 cfs Jan. 21 (gage height, 1.48 ft), but may have been less during period of 

ice effect.

1928-57: Maximum discharge, 15,400 cfs May 25, 1956 (gage height, 10.95 ft); minimum, 160 cfs Dec. 14, 1940.

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

Diversions for irrigation of about 10,000 acres above station.

Revisions (water years) .--WSP 1043: Drainage area. The figure of runoff for water year 

1954 has been corrected to 1,226,000 acre-ft, superseding that published in WSP 1347.

Rating table, water year 1956-57, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.0 

2.5 

3.0

465

560

840

1,190

4.0 

5.0 

6.0 

7.0

2,150

3,390

4,850

6,480

8.0

9.0

10.0

8,400

10,600

13,000

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

931 

*931

931

924

938

931

931

931

957

964

1,140

1,240

1,110

1,060

1,030

1,030

1,010

998

1,030

1,000

984

964

970

991

957

1,000

1,080

970

905

984

1,010

30,832

995

0.553

0.64

61,150

Nov.

984 

*905

898

957

984

998

§9T

957

950

938

957

938

950

886

774

892

964

950

786

714

810

872

860

834

810

798

786

774 "780

786

26,483

883

0.491

0.55

52,530

Dec.

792

798

879

860

828

822

*720

632

WT6

898

898

905

886

872

816

853

792

828

798

698

726

676

714

804

726

660

665

704

720

714

750

24,110

778

0.432

0.50

47,820

Jan.

726 

720

665

555

520

545

610

720

726

670

654

822

810

798

786

682

510

540

570

700

700

670

*680

680

680

610

520

520" 500

680

720

20,389

658

0.366

0.42

40,440

Feb.

750 

740

704

720

768

744

714

756

774

714

687

732

709

744

720

682

676

665 6"£5~

709

709

714

744

798

834

810

834

792

20,608

736

0.409

0.43

40,880

Mar.

732 

709

750

744

744

704

756

810

810

750

676

726

*709

638

709

709

709

692

682

687

704

643

643

654

670

643

626

6BT

660

682

682

21,707

700

0.389

0.45

43,060

Apr.

670 

648 675"

665

687

738

704

698

720

774

822

860

828

834

*905

905

918

912

912

931

964

998

1,120

1,250

1,140

1,040

1,010

1,110

1,520

2.1.070

28,023

934

0.519

0.58

55,580

May

2.520 

2,810

3,320

2,870

2,810

3,210

4,220

4,660

4,700

4,960

*4,940

5,380

5,900

6,120

6,260

6,040

6,020

6,210

7,250

6,620

5,720

5,050

4,680

4,400

4,310

4,620

5,290

5,940

6,610

7,400

7 L870

158,510

5,113

2.84

3.27

314,400

June

8,400 

9,230

10,500

11,400

12,400

12,400

11,400

10,500

*9,490

8,150

,290

,980

,800

,170

,510

,960

,440

,100

,100

,430

,550

,260

,100

,240

,370

,340

,380

,660

,640

,700

202,890

6,763

3.76

4.19

402 , 400

July

4,680 

4,520

4,220

3,890

3,640

3,520

3,390

3,210

3,080

2,990

2,940

*2,810

2,730

2,630

2,530

2,370

2,240

2,100

2,030

1,970

1,920

1,850

1,810

1,720

1,660

1,62O

1,560

1,510

1,480

1,460

1.400

79,480

2,564

1.42

1.64

157,600

Aug.

1,570 

1,350

1,290

1,250

1,210

1,170

1,150

1,110

1,090

1,060

1,050

998

970

950

*944

951

924

912

898

872

860

872

872

855

840

828 828"

828

846

886

912

50,884

996

0.555

0.64

61,260

Sept.

918 8~79~

872

860

846

822

798

792

786

786

792

786

774

762

756

750

TSo

762

*822

834

822

816

810

804

816

810

792

768

762

762

24,109

804

0.447

0.50

47,820

Calendar year 1956: Max 14,900 Min 450 Mean 2,352 Cfsm 1.31 In. 17.80 Ao-ft 1,707,000

Water year 1956-57: Max 12,400 Min 500 Mean 1,830 Cfsm 1.02 In. 13.81 Ao-ft 1,325,000

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ic Jan. 17 to Feb. 2.
208 SALMON RIVER BASIN

Challis Creek near Challis, Idaho

Location. Lat 44°34', long 114°19 P , in sec. 2, T. 14 N. , R. 18 E. , on left bank 0.1 mile 

downstream from Eddy Creek, 6 miles northwest of Challis, and 63. miles upstream from 

mouth.

Drainage area. 85 sq mi, approximately.

Records available. October 1943 to September 1957.

Gage. --Water-stage recorder. Datum of gage is 5,369.3 ft (levels by Topographic Division). 

Prior to Sept. 27, 1944, staff gage and Sept. 27, 1944, to Nov. 10, 1948, water-stage 

recorder, at site 350 ft downstream at datum 0.64 ft lower. Nov. 11, 1948, to Aug. 11, 

1956, water-stage recorder at present site at datum 0.64 ft lower.

Average discharge.--14 years, 46.2 cfs (33,450 acre-ft per year).

Extremes. Maximum discharge during year, 401 cfs June 7 (gage height, 5.07 ft); minimum, 

7.2 cfs Mar. 14, but may have been less during periods of ice effect or no gage-height 

record.

1943-57: Maximum discharge, 508 cfs June 1, 1956; maximum gage height, 6.30 ft 

May 24, 1956; minimum discharge, 5.7 cfs Mar. 11, 29, 1950.

Remarks. Records good except those for periods of ice effect, shifting control, or no 

gage-height record, all of which are poor. Diversions above station for irrigation.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

30

*27

26

25

25

24

24

25

25

25

30

29

26

25

24

23

22

22

22

22

22

21

21

21

21

22

23

20

19

22

22

735

23.7

Ij460

Nov.

20

19

*20

21

21

21

20

20

20

19

20

19

20

17

17

17

16

15

b!4

b!5

b!7

15

15

14

14

14

15

15

15

15

520

17.3

1,030

Dec.

14

14

14

13

13

13

*bll

bio

b!2

b!2

b!2

13

12

12

12

12

12

12

12

bll

b!2

bll

b!2

bll

bll

blO

bio

blO

bll

bll

b!2

367

11.8

728

Jan.

b!2

bTT

blO

blO

bll

bll

bll

bll

bll

bll

bll

b!2

blZ

11

10

b9.5

b9

blO

blO

bll

bll

bll

*bll

9.8

9.3

9.5

10

10

10

blO

blO

326.1

10.5

647

Feb.

blO

9.5

10

10

10

10

9.5

10

10

9.5

10

9.5

10

10

9.5

9

9

9

9

9

9

9.3

9.5

10

12_

11

12

10

-

275.3

9.83

546

Map.

9.8

9.5

9.5

9.3

9.3

9.3

11

11

12

10

9.8

9.8

*9.3

b9.0

973

9.5

9.8

9.8

20

21

17

15

13

13

13

13

13

13

13

14

14

369.0

11.9

732

Apr.

14

14

14

14

15

15

15

15

15

16

18

18

18

*18

18

18

19

19

19

20

20

21

21

22

22

22

21

23

29

59

572

19.1

1,130

May

46

58

75

83

85

93

102

*110

117

118

119

127

144

172

190

181

172

176

190

180

158

138

130

120

115

116

123

136

154 

186

222

4,136

133

8,200

June

210

257

263

292

333

369

389

386

*368

338

315

301

288

268

248

231

214

202

193

192

187

175

166

160

156

151

149

145

140 

156

7,222

241

14,320

July

133

130

125

119

113

106

102

98

95

90

88

*84

81

77

74

71

69

68

67

65

61

59

58

56

57

57

55

53

55 

52

JLL

2,467

79.6

4,890

Aug.

51

51

50

49

47

47

49

49

47

46

45

45

45

43

*44

44

44

44

43

45

45

45

40

58

58

57

58

59

41 

43

43

1,569

44.2

2,720

Sept.

43

40

39

38

37

37

35

55

56

36

35

35

34

34

33

31

30

31

35

*52

51

50

29

28

25

25

25

24

25 

25

969

52.5

1,920

Calendar year 1956: Max 496 Mln 9.0 Mean 69.5 Ac-ft 50,460

Water year 1956-57: Max 389 Mln 9.0 Mean 53.0 Ac-ft 38,32O

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Jan. 27-29, Feb. 5-21; discharge estimated on basis of weather recards, records for Johnson Creek at Yellow Pine, and other streams in Salmon River basin. Shiftingcontrol method used May 1 to July 51.
SALMON RIVER BASIN 209

Pahsimeroi River near May, Idaho

Location. Lat 44°42' , long 114°03 I , in W? sec. 25, T. 16 N. , R. 20 E., on right bank a 

quarter of a mile downstream from old highway bridge on Challis-Salmon River highway, 

a quarter of a mile upstream from mouth, and 10 miles northwest of May.

Drainage area.--845 sq mi, approximately.

Records available. October 1929 to September 1957. Monthly discharge only for some periods , published in WSP 1317.

Gage. Staff gage read once daily. Datum of gage is 4,636.95 ft above mean sea level, 

adjustment of 1912.

Average discharge.--28 years, 210 cfs (152,000 acre-ft per year).

Extremes. Maximum discharge observed during year, 796 cfs June 8; maximum gage height 

observed, 3.91 ft June 7; minimum discharge observed, 111 cfs May 8 (gage height, 

1.88 ft).

1929-57: Maximum discharge observed, that of June 8, 1957; maximum gage height 

observed, 4.37 ft May 25, 1956 (backwater from Salmon River); minimum discharge 

observed, 74 cfs May 19, 1955 (gage height, 1.66 ft).

Remarks. Records good except those for periods of no gage-height record or backwater 

from Salmon River, which are fair. Diversions for irrigation of about 12,500 acres 

above station.

Rating table, water year 1956-57, except periods of backwater from Salmon

River (gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Aug. 4-31)

2.0 

2.2

136

187

2.5 

3.0 

3.7

281

490

825

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

207

*207

207

213

225

a232

238

238

241

244

250

271

278

278

278

271

267

267

271

a270

a27O

a27O

a270

a270

a270

a270

a270

a270

a270

aZ70

a275

7,928

256

15,720

Nov.

a275

a275

*274

a275

a275

a275

a275

a275

a275

a275

a275

a275

a275

a275

a275

a275

a260

a26O

a260

a260

a260

261

261

257

a256

254

a254

254

254

250

8,OOO

267

15,870

Dec.

250

247

247

247

*247

247

241

238

241

241

a241

a241

241

244

241

244

244

241

241

238

238

238

238

235

235

232

232

228

228

228

228

7,422

239

14,720

Jan.

228

228

228

225

219

219

216

a219

222

222

222

225

225

225

222

222

222

216

216

228

228

228

225

*222

213

205

200

205

213

213

219

6,820

220

13,530

Feb.

232

219

2T9

222

225

225

222

222

225

228

228

228

228

232

232

235

235

232

232

235

235

235

235

254

278

271

264

264

-

6,592

235

13,080

Mar.

261

254

254

250

250

250

247

261

267

264

264

*257

264

254

244

244

254

250

250

250

247

247

244

244

244

244

244

244

244

254

247

7,792

251

15,460

Apr.

261

250

244

244

250

250

247

247

244

244

*232

241

235

235

232

235

238

235

238

244

241

235

225

222

219

216

210

207

204

196

7,021

234

13,930

May

190

158

163

160

134

128

a!20

*111

TTs

119

113

115

119

132

136

141

141

146

165

182

190

174

163

155

150

155

153

148

132

138

146

4,492

145

8,910

June

136

cT5~8

C262

C445

c676

C671

C725

C796

*c777

C723

558

490

454

432

414

383

334

318

303

296

296

285

261

232

213

204

204

202

204

207

11,659

389

23,130

July

222

232

244

244

241

241

241

235

232

232

228

*225

219

213

210

213

219

216

210

207

207

204

202

199

199

196

193

190

184

184

182

6,664

215

13,220

Aug.

184

187

184

182

179

176

174

171

171

165

160

158

158

163

*163

158

155

150

153

155

160

160

163

168

168

168

168

174

179

184

187

5,225

169

10,360

Sept.

190

193

196

199

199

204

204

207

210

210

213

216

213

213

210

213

213

216

219

*222

228

228

232

235

235

235

238

238

238

241

6,508

217

12,910

Calendar year 1956: Max 334 Min 90 Mean 212 Ac-ft 153,900

Water year 1956-57: Max 796 Min 111 Mean 236 Ac-ft 170,800

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weathe 

ecords for nearby streams. 

c Backwater from Salmon River.

records, trend of flow, and
210 SALMON RIVER BASIN

Salmon River at Salmon, Idaho

Location.--Lat 45°11'00", long 113°53'40", in NE£ sec. 6, T. 21 N., R. 22 E., on left 

bank 1,000 ft downstream from island, 0.4 mile upstream from Lemhi River, and 0.5 mile 

downstream from highway bridge at Salmon.

Drainage area.--3,760 sq mi, approximately.

Records available.--April 1912 to September 1916, July 1919 to September 1957. Monthly 

discharge only for some periods, published in WSP 1317.

Gage.--Water-stage recorder. Datum of gage is 3,911.14 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers). Prior to Oct. 21, 1929, staff gage at site 

700 ft upstream at different datum.

Average discharge. 42 years (1912-16, 1919-57), l,918cfs (1,389,000 acre-ft per year).

Extremes. Maximum discharge during year, 14.300 cfs June 6 (gage height, 7.23 ft); maximum gage height, 8.04 ft Jan. 27 (ice jam); minimum daily discharge, 850 cfs Jan. 5,17; 

minimum gage height, 2.08 ft Jan. 6.

1912-16, 1919-57: Maximum discharge, 16,500 cfs May 25, 1956 (gage height, 

8.25 ft); maximum gage height, 9.62 ft Jan. 8, 1942 (ice Jam); minimum discharge, 

242 cfs Jan. 8, 1937 (gage height, 1.50 ft).

Remarks.--Records excellent except those for periods of ice effect or shifting control, 

which are fair. Diversions above station for irrigation.

Revisions (water years). WSP 1043: Drainage area. WSP 1317: 1916.

Rating tables, water year 1956-57, except periods of ice effect or shifting 

control (gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to July 31 Aug. 1 to Sept.

2.2 1,060

2.8 1,730

3.4 2,660

4.0 3,950

5.0 

6.0 

7.0 

8.0

6,860

10,200

13,600

17,000

2.8 

3.1 

3.4

1,050

1,380

1,760

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 

2

3

4

5

6

7

8

9

10

11 

12

13 

14

15

16

17

18

19

20

Zl

22

23

24

25

26

27 

28

29

30

31

Tota]

Mean

Ac-ft

Oct.

1_,280 

1,280

1,280

*1,310

1,340

1,340

1,360

1,360

1,420

1,460

1,510 

1,670

1,690 

1,610

1,570

1,550

1,550

1,540

1,530

1,540

1,530

1,530

1,490

1,510

1,500

1,510

1,600 

1,620

1,510

1,490 

1,590

46,070

1,486

91,380

Nov.

1,590 

1,540

1,490

1,490

*1,540

1,590

i, 590

1,560

1,510

1,500

1,490 

1,490

1,490 

1,480

1,410

1,340

1,480

1,510

1,460

1,300

1,280

1,350

1,400

1,380

1,350

1,310

1,290 

1,280

1,260

1,290

43,040

1,435

85,370

Dec.

1,290 

1,280

1,340

1,370

1,360

*1,240

1,150

1,000

1,080

1,260

1,410 

1,400

1,410 

1,380

1,340

1,300

1,320

1,270

1,290

1,250

1,120

1,150

1,100

1,200

1,200

1,100

1,050 

1,100

1,170

1,200 

1,250

38,380

1,238

76,130

Jan.

1,200 

1,200

1,100

900

650

900

1,000

1,200

1,200

1,100

1,050 

1,200

1,350 

1,300

1,300

1,100

850

900

960

1,150

1,150

1,150

1,150

1,150

*1,150

1,000

900 

920

1,000

1,100 

1,200

33,680

1,086

66,800

Feb.

1,200 

1,200

1,150

1,150

1,250

1,200

1,150

1,200

1,250

1,200

1,100 

1,^00

1,150 

1,200

1,150

1,200

1,100

1,100

1,100

1,150

1,200

1,200

1,250

1,300

1,350

1,350

1,570 

1,350

-

.......

33,770

1,206

66,980

Mar.

1,270

1,200

1,220

1,250

1,230

1,230

1,180

1,260

1,290

1,290

*1,200 

1,170

1,180 

1,130

1,090

1,150

1,150

1,160

1,150

1,150

1,160

1,150

1,100

1,100

1,110

1,130

1,110

1,100

1,130

1,160 

1,180

36,380

1,174

72,160

Apr.

1,190 

1,150

1,140

1,140

1,140

1,180

1,200

1,170

1,170

1,200

*1,270 

1,340

1,360

1,320

1,340

1,380

1,380

1,370

1,380

1,390

1,410

1,420

1,440

1,530

1,610

1 , 500

1,410 

1,390

1 , 480

1 , 870

40,270

1,342

79,870

May

2,290 

2,620

3,220

3,500

3,280

3,330

4,200

5,010

5,330

5,720

*5,760 

6,160

6,800 

7,530

8,000

7,700

7,570

7,600

8,520

9,350

8,320

7,280

6,540

5,940

5,630

5,600

6,100 

6,960

7,830

8, 820

9,810

192,320

6,204

381,500

June

10,400 

11,000

11,800

12,800

13,600

14,100

14,000

*13,100

12,600

11,500

10,000 

9,120

8,590 

7,900

7,240

6,540

5,970

5,390

5,100

5,130

5,600

5,330

4,960

4,950

5,010

5,010

5,010 

5,210

5,510

5,450

247,920

8,264

491,700

July

5,510 

5,390

5,210

4,680

4,410

4,180

3,980

3,810

3,620

3,500

3,460 

3,35O

3,260 

»3,180

3,070

2,930

2,770

2,640

E,550

2,520

2,430

2,360

2,290

2,210

2,150

2,090

2,060 

1,990

1,940

1,920 

1,850

97,310

3,139

193,000

Aug.

1,760 

1,700

1,630

1,560

1,500

1,450

1,420

1,400

1,390

1,360

1,330 

1,280

1,260 

1,230

1,200

*1,180

1,180

1,170

1,160

1,140

1,120

1,110

1,120

1,100

1,070

1,060

1,050 

1,070

1,110

1 ISO 

l',240

39,500

1,274

78,350

Sept.

1.250 

1,250

1,250

1,250

1,220

1,190

1,170

1,150

1,130

1,130

1,130 

1,120

1,090 

1,070

1,080

1,070

1.060

1,070

1,100

1,160

1,180

1,170

*1,160

1,150

1,160

1,160

1,140 

1,100

1,090

1,110

34,360

1,145

68,150

Calendar year 1956: Max 16,300 Min 811 Mean 2,915 Ac-ft 2,116,000

Water year 1956-57: Max 14,100 Min 850 Mean 2,419 Ac-ft 1,751,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 6-9, 21-23, De 

height record Jan. 28-3O). Shifting-control method used June "' '

25 to Feb. 26 (no gageAug. 6.
SAMON RIVER BASIN 211

Texas Creek near Leadore, Idaho

Location. Lat 44°35', long 113°20', in NW^SW^ sec. 35, T. 15 N., R. 26 E., on right bank 

50 ft downstream from Nez Perce Creek, half a mile upstream from county road bridge, 

and 6j miles south of Leadore.

Drainage area.--73 sq mi, approximately; 74 sq mi, approximately, at former site.

Records available.--June 1955 to September 1957. Records for November 1938 to July 1939 

at site half a mile downstream not equivalent owing to diversions.

Gage.--Water-stage recorder. Altitude of gage is 6,280 ft (by barometer). November 1938 

"to July 1939, staff gage at site half a mile downstream at different datum.

Extremes --Maximum discharge during year, 70 cfs June 30 (gage height, 3.57 ft); maximum 

gage height recorded, 4.38 ft Jan. 31, Feb. 1 (ice jam); minimum discharge, 8.8 cfs 

Aug. 9 (gage height, 2.87 ft).

1955-57: Maximum discharge, 116 cfs Mar. 25, 1956 (gage height, 3.94 ft), from 

rating curve extended above 50 cfs by logarithmic plotting; maximum gage height, that 

of Jan. 31, Feb. 1, 1957; minimum discharge, 4.3 cfs Aug. 31, 1955 (gage height, 

2.72 ft).

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation above station.

Rating table, water year 1956-57, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Oct. 1-21)

2.8

2.9

3.0

3.2 

3.5

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

12

TT

12

13

14

12

13

17

23

22

26

26

2,1

20

19

19

22

23

26

26

24

23

26

30

30

32

34

30

28 

29

31

696

22.5

1,380

Nov.

30

b28

b29

31

30

34

34

32

32

33

34

*33

32

b29

b25

26

30

29

b23

b24

26

29

27

27

26

b25

b24

b23

24 

25

854

28.5

1,690

Dec.

26

26

26

26

27

27

b26

?6- 23

28

*b29

b29

29

29

28

28

27

26

26

26

26

b25

b25

26

25

b23

b23

24

24

24 

24

807

26.0

1,600

Calendar year 1956; Max 100

Jan.

25

25

24

b21

b23

b24

b26

b25

b25

b25

b26

b27 b56~

b24

b22

20

19

W

23

23

23

23

*b22

21

21

b22

b23

b23

b22 

b23

b23

721

23.3

1,430

Feb.

b23

23

23

23

23

23

22

23

23

22

23

22

22

22

2!

21

21

22

23

23

22

23

25

28

29.

29

28

28

-

660

23.6

1,310

Mar.

27

27

27

27

27

28

29

30

30

29

28

*28

28

28

29

29

30

30

31

34

34

30

30

30

30

32

33

34

35

44 

45

953

30.7

1,890

Apr.

36

34

36

33

32

34

30

37

*46

45

43

40

41

50

5o

43

42

40

40

42

44

40

41

37

34

33

33

35

40

40

1,171

39.0

2,320

May

*39

36

35

45

35

31

26

25

28

29

28

44

39

57

47

26

22

22

40

45

34

30

26

25

22

22

21

2T

21

22

23

966

31.2

1,920

June

26" 22

30

30

31

34'

*35

34

34

42

31

26

24

26

33

51

34

24

22

28

39

40

33

29

29

30

30

26

25

34

932

31.1

1,850

July

38

So

26

24

23

22

22

*22

21

19

22

22

22

22

21

19

18

19

24

23

22

22

22

21

19

19

18

16

15

13

14

660

21.3

1,310

Aug.

17

16

16

14

*14

12

11

11

10

TT

11

12

11

14

17

20

21

22

22

21

22

22

22

21

21

21

20

20

22

31

32

557

18.0

1,100

Sept.

30

24

22

22

21

20

19

19

20

19

*19

19

19

24

23

23

22

23

28

30

312B"

27

26

25

25

23

22

22

22

697

23.2

1,380

Mln 6.4 Mean 21.3 Ac-ft 15,480

Water year 1956-57: Max 57 Mln 10 Mean 26.5 Ac-ft 19,180

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 8-10, Jan. 16-22, 24, 25, Feb. 2 to Mar. 11, Mar. 22-29, 

Apr. 3-8; discharge estimated on basis of weather records, records for Lemhi River near Lemhl, and 

other nearby streams.
212 SALMON RIVER BASIN

Lemhi River near Lemhi, Idaho

Location. Lat 44°55', long 113°37', In sec. 4, T. 18 N., R. 24 E., near center of span 

on downstream side of private bridge on Langfitt Ranch, 3j miles downstream from Hayden 

Creek and 4j miles north of Lemhi.

Drainage area. 890 sq mi, approximately.

Records available. November 1938 to August 1939, April 1955 to September 1957.

Gage.--Staff gage read once daily; crest-stage indicator since Apr. 29, 1955. Datum of 

gage is 4,971.7 ft above mean sea level, adjustment of 1929 (levels by Corps of 

Engineers).

Extremes. Maximum discharge during year, 1,840 cfs probably June 7 (gage height, 4.48 ft); 

minimum observed, 139 cfs Aug. 17, 18, 20-22; minimum gage height, 1.58 ft Sept. 14.

1938-39, 1955-57: Maximum discharge, that of June 7, 1957; minimum observed, 

93 cfs Sept. 3-7, 1955; minimum gage height observed, 1.41 ft Aug. 27, 1939.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Many diversions for irrigation above station.

Revisions (water years).--WSP 1397: 1939.

Rating table, water year 1956-57, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Oct. 1 to Jan. 15, Sept. 14-30)

1.6 

1.9 

2.2 

2.6

136

221

330

500

3.0 

3.5 

4.0 

4.5

735

1,080

1,460

1,860

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

El

22

23

24

25

26

27

Z8

29

30

31

Total

Mean

Ac-ft

Oct.

209

215

215

*212

209

196

190

206

228

238

245

272

272

280

269

262

248

248

262

252

252

245

245

245

248

255

255

248

235

238

245

7,439

240

14,760

Nov.

245

221

235

*245

*245

258

266

258

252

252

252

252

252

238

209

221

231

231

206

b!90

206

212

206

199

199

193

193

b!80

b!85

193

6,725

224

13,340

Dec.

193

193

199

206

206

*206

b!90

al80

aT90

a2OO

206

206

206

206

199

206

199

206

206

206

206

b!90

b210

b210

b!90

b!85

b!95

b200

b200

b205

b_21_5

6,215

200

12,330

Jan.

b210

b210

b!90

bl80

b!70

b!80

b!90

b210

b200

b200

199

193

187

187

187

b!70

b!60

b!75

b!85

b!95

b!90

b!90

b!90

*b!85

a!70

a!60

a!70

a!75

a!70

a!75

a!90

5,743

185

11,390

Feb.

a200

a!95

a!95

a!90

a!90

a!90

a!90

a!90

a!90

a!85

a!90

al80

al80

b!90

b!80

6180

bl80 bieo bieo

b!85

6180 bieo

209

228

241

248

248

241

5,515

197

10,940

Mar.

228

228

235

221

221

221

224

241

255

255

235

*228

228

206

221

228

228

241

241

235

221

221

221

221

228

228

228

235

241

262

262

7,188

232

14,260

Apr.

255

241

248

241

241

255

248

248

262

262

*272

272

276

290

286

280

272

272

272

280

283

283

283

276

269

272

266

266

280

294

8,045

268

15,960

May

314

322

350

500

455

460

482

515

*545

592

586

748

748

814

919

856

780

754

877

1,020

1,020

968

912

800

761

735

774

842

933

1,020

1,120

22,522

727

44,670

June

1,220

1,350

1,560

1,660

al , 700

al , 750

1.850

*1,740

1,790

1,570

1,460

1,300

1,100

1,000

940

975

996

912

912

940

1,050

989

940

905

905

877

884

898

884

884

35,921

1,197

71 , 250

July

877

863

780

716

652

610

562

535

505

486

478

468

437

437

419

*398

378

370

402

394

378

378

374

362

354

346

334

318

306

276

269

14,462

467

28,680

Aug.

272

262

248

235

224

218

212

199

193

184

176

170

159

149

149

*146

139

Til

146

139

139

139

144

149

154

149

154

159

157

182

280

5,567

180

11,040

Sept.

228

231

231

231

238

231

228

218

218

212

206

206

206

206

212

212

212

221

238

272

*269

231

228

252

252

245

238

238

231

231

6,872

229

13,630

Calendar year 1956: Max 1,050 Min 124 Mean 272 Ac-ft 197,400

Water year 1956-57: Max 1,830 Min 139 Mean 362 Ac-ft 262,200

* Discharge measurement made on this day.

a No gage-height record) discharge estimated on basis of weather records, records for Texas Creek, 

and other nearby streams.

b Stage-discharge relation affected by ice.
SALMON RIVER BASIN 213

Panther Creek near Shoup, Idaho

Location.--Lat 45°19", long 114°23', In sec. 19, T. 23 N., R. 18 E., on left bank 25 ft 

downstream from bridge on private road, 1 mile upstream from mouth, and 7 miles southwest of Shoup.

Drainage area. 529 sq ml.

Records available. October 1944 to September 1957.

Gage.--Staff gage read once dally. Altitude of gage is 3,280 ft (from river-profile map).

Average discharge.--13 years, 259 cfs (187,500 acre-ft per year).

Extremes.--Maximum discharge observed during year, 2,490 cfs June 4 (gage height, 4.10 ft); 

minimum daily, 70 cfs Jan. 17.

1944-57: Maximum discharge observed, 2,740 cfs May 25, 1956 (gage height, 4.30 ft); 

maximum gage height observed, 4.4 ft Jan. 6, 1947 (backwater from ice); minimum discharge observed, 30 cfs Feb. 10, 1953 (gage height, -0.21 ft).

Remarks. Records good except those for periods of ice effect, which are fair. Diversions 

for irrigation of about 1,000 acres above station.

Revisions (water years). WSP 1063: 1945.

Rating table, water year 1956-57, except periods of ioe effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 23 to July 14)

1.2

106

198

326

1.6 

2.0 

2.5

495

715

1,030

3.0 

4.0 

4.5

1,410

2,300

2,800

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

2O

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

102

98

*98

98

98

98

95

95

95

96

108

110

110

106

106

102

98

98

102

98

98

102

102

102

106

118

106" 122

102

102 

106

3,177

102

0.193

0.22

6,300

Nov.

91

82- 73

89

102

 128

126

108

106

102

102

102

98

95

87

84

84

98

102

102

110

105

105

100

100

100

95

90

90

100

2,956

98.5

0.186

0.21

5,860

Dec.

95

100

105

105

*105

95

90

85

9F

 100

100

110

125

122

118

118

106

98

95

91

100

90

loo

100

90

85

85

90

90

90 

100

3,078

99.3

0.188

0.22

6,110

Jan.

90

95

85

75

80

85

loo

100

95

95

100

100

95

95

90

80

70

80

85

90

90

90

85

85

*80

80

85

85

80

80 

80

2,705

87.3

0.165

0.19

5,370

Feb.

85

85

85

80

80

80

80

85

85

80

80

80

75

80

80

80

80

80

80

80

85

90

95

105

115

120

110

95

-

2,435

87.0

0.164

0.17

4,830

Mar.

87

87

95

87

91

98

98

98

98

95

*78

87

84

98

106

106

106

102

87

93

96

93

93

89

85

82

85

91

95

95 

98

2,883

93.0

0.176

0.20

5,720

Apr.

106

106

102

106

112

112

108

112

116

120

128

*135

141

133

133

137

146

150

150

155

167

172

188

193

167

172

167

212

247

315

4,508

150

0.284

0.32

8,940

May

436

486

542

590

767

834

956

1,110

*1,270

1,670

1,580

1,700

1,620

1,700

1,700

1,620

1,630

1,690

1,860

1,960

1,710

1,550

1,470

1,310

1,160

1,230

1,390

1,900

2,080

2,180 

2,180

43,881

1,416

2.68

3.08

87,040

June

2,160

2,200

2,280

2,490

2,390

2,290

2,000

1,910

1,520

1,380

*1,200

1,140

1,090

1,020

996

891

828

767

756

756

767

767

715

680

657

623

601

590

569

5j47

36,580

1,219

2.30

2.57

72,560

July

537 'SiS

516

495

477

467

458

405

337

326

326

319

*312

297

287

280

256

250

247

235

229

229

229

212

204

204

204

190

177

165 

160

9,546

308

0.582

0.67

18,930

Aug.

155

T53

153

148

148

148

144

144

139

130

130

130

126

126

122

*116

114

110

110

110

110

110

106

106

106

106

102

118

126

130 

130

3,904

126

0.238

0.27

7,740

Sept.

130

T26

126

122

110

106

106

106

102

102

102

98

98

98

95.

95

95

110

118

114

*112

114

110

106

102

102

98

98

95

95

3,191

106

0.200

0.22

6,330

Calendar year 1956: Max 2,74O Min 50 Mean 319 Cfsm 0.6O3 In. 8.23 Ac-ft 231,800

Water year 1956-57: Max 2,49o Min 70 Mean 326 Cfsm 0.616 In. 8.34 Ac-ft 235, 7OO

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 22 to Dec. 13, Dec 21 to Feb. 28.
814 SALMON RIVER BASIN

Salmon River near Shoup, Idaho

Location.- -La t 45°19'30", long 114°26'00", In NE^SWv sec. 14, T. 23 N., R. 17 E., on right 

 bank 0.6 mile upstream from Owl Creek, 2.3 miles downstream from Panther Creek, and 

9 miles southwest of Shoup.

Drainage area. 6,270 sq mi, approximately. 

Records available. October 1944 to September 1957.

Gage. --Water- stage recorder. Altitude of gage is 3,160 ft (from river-profile map).

"Prior to May 4, 1947, wire-weight gage at site 1.3 miles upstream at datum 3,168.69 ft 

above mean sea level, unadjusted. May 4, 1947, to Sept. 17, 1951, staff gage at site 

200 ft downstream from wire-weight gage at datum 1.28 ft higher than datum of wireweight gage .

Average discharge. --13 years, 3,091 cfs (2,238,000 acre-ft per year).

Extremes. --Maximum discharge during year, 20,900 cfs June 6 (gage height, 11.54 ft); minImum daily, 1,200 cfs Jan. 5, 17.

1944-57: Maximum discharge, 24,900 cfs May 26, 1956 (gage height, 13.00 ft); minimum daily, 800 cfs Jan. 31, Feb. 1, 1951.

Remarks. Records excellent except those for period of ice effect, which are fair. DiversTons for irrigation of about 88,000 acres above station.

Rating table, water year 1956-57, except period of ice effect ( 

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used June 5-22)

2.0 

2.5 

3.0

1,200

1,640

2,200 6.0

3,590

5,190

7,090

8.0

10.0

12.0

11,400

16,300

21,800

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

1.850 

1,840

*1,840

1,860

1,880

1,870

1,890 

1,880

1,900

2,010

2,120

2,260

2.450

2,400

2,300

2,240

2,240

2,200

2,200

2,190

2,180

2,150

2,140

2,140

2,150

2,180

2,290

2,300

2,230

2 140

2 190

65,490

2,113

129,900

Nov.

2,240 

2,180

2,100

2,100

2,160

*2,260

2,290 

2,260

2,210

2,160

2,160

2,150

2,180

2,130

2,040

1,960

2,020

2,140

2,010

1,820

1,840

1,880

1,920

1,920

1,890

1,840

1,770 

1,750

1,750

1,750

60,880

2,029

120,800

Dec.

1,750 

1,800

1,900

2,000

*1,900

1,800

1,600 

1,500

1,550

1,700

2,000

2,000

2,000

1,950

1,900

1,900

1,850

1,800

1,800

1,750

1,600

1,600

1,550

1,600

1,700

1,600

1,500 

1,500

1,650

1,650

1,750

54,150

1,747

107,400

Jan.

1,700 

1,700

1,500

1,300

1,200

1,300

1,400 

1,700

1,700

1,600

1,500

1,600

1,900

1,800

1,800

1,500

1,200

1,300

1,400

1,500

1,600

1,600

1,600

1,600

*1,500

1,400

1,250 

1,300

1,400

1,600

1,700

47,150

1,521

93,520

Feb.

1,700 

1,700

1,650

1,650

1,700

1,650

1.600 

1,700

1,750

1,700

1,600

1,700

1,600

1,700

1,650

1,600

1,600

1,600

1,600

1,650

1,700

1,700

1,800

2,000

2,200

2,400

2.740 

2 , 550

-

50,190

1,792

99,550

Mar.

2.290 

2,040

2,000

1,970

1,980

1,960

1,950 

2,040

2,160

2,280

*1,970

1,880

1,810

1,700

1,670

1,670

1,740

1,800

1,770

1,770

1,810

1,740

1,700

1,650

1,670

1,670

1,660 

1,660

1,690

1,800

1,850

57,350

1,850

113,800

Apr.

1,870 

1,810

1,750

1,730

1,740

1,810

1,810 

1,760

1,750

1,810

1,860

*1,940

1,980

1,980

2,000

2,020

2,020

2 , 020

2,010

2,060

2,100

2,180

2,180

2,240

2,320

2,260

2,100 

2,040

2,190

2 , 660

60,000

2,000

119,000

Hay

5,260 

3,780

4,470

5,590

5,550

5,690

6,580 

7,570

8,770

*9,550

9,500

9,850

10,600

11,500

11,700

11,800

11,500

11,400

12,500

14,400

15,500

12,100

11,000

10,200

9,610

9,550

9,790

10,700

11,800

15,100

14,400

500,510

9,687

595,700

June

15,200 

16,100

17,500

18,700

19,800

20,600

19^400

18,500

16,500

*14,400

15,000

12,500

11,500

10,600

9,660

8,900

8,100

7,470

7,490

8,040

7,970

7,470

7,150

7,110

,130

,110 

,110

,210

,050

559,050

11,970

712,200

July

7,090 

7,010

6,770

6,540

5,900

5,550

5,260 

5,040

4,780

4,580

4,440

4,510

*4,180

4,140

5,940

3,770

3,550

3,340

3,180

3,190

5,150

5,080

5,040

2,900

2,800

2,720

2,690 

2,560

2,470

2,400

2,550

126,460

4,079

250,800

Aug.

2,250 

2,150

2,120

2,040

1,960

1,870

1,840 

1,780

1,750

1,740

1,700

1,680

1,640

1,610

1,590

*1,580

1,560

1,550

1,520

1,500

1,480

1,470

1,460

1,450

1,430

1,440

1,410 

1,430

1,480

1,560

1,640

51,660

1,666

102,500

Sept.

1,750 

1,750

1,740

1,740

1,750

1,690

1,670 

1,650

1,590

1,580

1,580

1,570

1,580

1,540

1,550

1,550

1,510

1,550

1,620

1,710

*1,780

1,800

1,760

1,740

1,720

1,720

1,690 

1,640

1,590

1,650

49,660

1,655

98,500

Calendar year 1956: Max 24,400 Min 1,130 Mean 3,973 Ac-ft 2,884,000

Water year 1956-57: Max 20,600 Win 1,200 Mean 3,513 Ac-ft 2,544,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 29 to Feb. 26.
SALMON RIVER BASIN 215

Middle Pork Salmon River near Cape Horn, Idaho

Location.--Lat 44"25', long 115°11', in sec. 34, T. 13 N., R. 11 E., on left bank 1,100 ft 

downstream from Little Beaver Creek, half a mile downstream from confluence of Marsh 

and Beaver Creeks, and 2 miles northwest of Cape Horn.

Drainage area.--138 sq mi.

Records available. September 1928 to September 1957. Monthly discharge only for some 

periods, published in WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 6,435 ft (by barometer). 

Average discharge.--29 years (1928-57), 237 cfs (171,600 acre-ft per year).

Extremes.--Maximum discharge during year, 2,270 cfs June 4 (gage height, 6.31 ft); minimum, 42 cfs Mar. 27 (gage height, 2.22 ft), but may have been less during period of no 

gage-height record.

1928-57: Maximum discharge, 2,980 cfs May 24, 1956 (gage height, 6.96 ft); minimum 

recorded, 31 cfs Apr. 14, 1945 (gage height, 2.12 ft).

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are fair. No diversion above station.

Revisions.--WSP 738: Drainage area.

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

3.0 

3.5 

4.0

195

360

565

5.0 

6.0 

7.0

1,120

1,960

3,020

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

112

112

108

106

108

106

104

108

116

129

168

1ST

126

118

114

112

110

112

120

112

118

106

110

110

106

114

120

108

104

108

116

3,572

115

0.833

0.96

7,080

Nov.

108

104

108

108

110

114

110

110

106

108

106

106

104

95

90

105

105

95

85

90

95

95

95

90

90

90

85

85

85

85

2,962

98.7

0.715

0.80

5,880

Dec.

85

90

95

9T

90

85

80

75

7F

75

80

85

90

90

90

90

90

90

85

85

85

85

80

80

75

75

75

80

80

85

85

2,605

84.0

0.609

0.70

5,170

Jan.

85

8F

75

65

70

75

85

80

80

80

85

85

80

80

75

60

60

70

75

75

75

75

70

65

65

65

70

70

70

70

70

2,290

73.9

0.536

0.62

4,540

Feb.

70

70

70

70

70

70

65

ST

65

65

65

65

65

- 65

65

65

65

65

65

65

65

65

65

70

70

75

75

75

-

1,893

67.6

0.490

0.51

3,750

Mar.

75

75

75

75

75

75

»77

77

77

72

70

71

72

69

74

72

70

69

70

70

72

69

72

72

72

67

6659"

70

70

70

2,229

71.9

0.521

0.60

4,420

Apr.

67

67

67

67

70

69

67

69

70

74

76

77

77

84

88

88

88

88

91

95

102

116

135

140

122

118

124

161

216

290

3,063

102

0.739

0.83

6,080

May

336 412-

444

440

468

596

715

788

906

936

954

1,050

1,160

1,190

1,210

,380

,420

,600

,500

,220

1,040

936

912

912

942

1,060

1,200

1,320

1,440

1,580

1,640

31,607

1,020

7.39

8.52

62,690

June

1,690

1,920

2,100

2,140

2,190

2,120

1,850

1,690

1,490

 1,320

1,220

1,220

1,160

1,030

900

788

715

695

715

771

750

685

645

650

650

625

606

601

578

552

34,066

1,136

8.23

9.18

67,570

July

529

500

468

436

408

388

368

350

332

325

*304

297

304

276

262

249

240

231

228

219

210

213

210

198

192

187

182

173

173

168

166

8,786

283

2.05

2.37

17,430

Aug.

161

158

156

149

149

146

144

142

137

135

133

131

129

 126

124

122

122

118

116

114

114

114

114

112

112

110

UO

112

116

120

118

3,964

128

0.928

1.07

7,860

Sept.

116

TI2

108

108

106

104

102

100

102

102

102

1OO

100

98

98

97

95

»100

104

102

100

98

97

95

93

93

91

39" 89

89

2,990

99.7

0.722

0.81

5,930

Calendar year 1956: Max 2,830 Mln 58 Mean 361 Cfsm 2.6Z In. 35.65 Ac-ft 262,400

Water year 1956-57: Max 2,190 Mln 60 Mean 274 Cfsm 1.99 In. 26.97 Ac-ft 198,400

Peak dlscha] 

2,270 cfs

(base, 930 cfs). May 18 (11 p.m.) 1,770 cfs (5.80 ft); June 4 (10 to 11 p.m.) 

[6.31 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 14 to about Feb. 25, Mar. 11-14. No gageheight record Dec. 1 to Mar. 6; discharge estimated on basis of weather records, records for Valley 

Creek at Stanley, Johnson Creek at Yellow Pine, and other nearby streams.
SALMON RIVER BASIN

Bear Valley Creek near Cape Horn, Idaho

Location. Lat 44°26', long 115°17' , in sec. 29, T. 13 N., R. 10 E., on right bank 250 ft 

downstream from Fir Creek, 3 miles upstream from mouth, and 7 miles northwest of Cape 

Horn.

Drainage area. 180 sq mi, approximately.

Records available.--September 1921 to September 1928 (fragmentary), October 1928 to September 1957.Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 6,340 ft (by barometer). 

Average discharge. 29 years (1928-57), 291 cfs (210,700 acre-ft per year).

Extremes. Maximum discharge during year, 2,700 cfs June 5 (gage height, 4.92 ft); minimum daily, 80 cfs Dec. 9, 10; minimum gage height recorded, 1.16 ft Nov. 14.

1921-57: Maximum discharge, 3,860 cfs May 27, 1956 (gage height, 5.87 ft), from 

rating curve extended above 2,300 cfs by logarithmic plotting; minimum recorded, 28 cfs 

Nov. 11, 1931.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. No regulation or diversion above station.

Revisions. WSP 573: Drainage area.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, In feet, and discharge, in cubic feet per second)

1.1 

1.3 

1.5 

2.0

110

157

327

2.5 

3.0 

4.0 

5.0

580

910

1,730

2,800

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

50

31

Total

Mean

Cfsm

Ac-ft

Oct.

123

121

121

121

121

119

119

121

128

144

185

191

3_g3

147

137

152

128

150

168

157

144

140

137

137

152

140

152

142

130

130

121

4,281

138

0.767

0.88

8,490

Nov.

125

120

120

125

155

135

135

130

120

120

120

115

115

105

105

115

125

125

115

105

105

110

110

105

100

100

95

95

95

100

3,425

114

0.633

0.71

6,790

Dec.

100

105

T05

105

100

95

95

90

80

55

*90

95

100

105

105

105

100

100

100

1OO

95

95

95

95

90

90

95

95

95

95

100

2,995

96.6

0.537

0.62

5,940

Jan.

100

95

90

85

95

100

100

100

100

105

TS5

105

100

95

85

85

90

95

100

100

95

95

90

90

85

85

85

90

95

100

2,925

94.4

0.524

0.60

5,800

Feb.

100

95

95

95

90

90

90

90

90

90

90

90

90

90

85

85

85

85

85

85

90

95

100

1OO

95

105

T05

100

2,585

92.3

0.515

0.53

5,130

Mar.

105

100

TUS

100

100

100

105

105

100

100

105

100

100

105

105

105

100

100

*100

102

100

100

100

100

loo

100

loo

105

105

105

3,157

102

0.567

0.65

6,260

Apr.

105

135

105

110

110

110

110

105

105

110

115

115

120

150

154

147

154

154

160

165

171

179

215

250

200

182

179

207

291

361

4,680

156

0.867

0.97

9,280

May

425

5X4

586

574

628

770

975

1,050

1,150

1,250

1,240

1,410

1,650

1,730

1,720

1,970

2,090

2,140

2,420

1,940

1,520

1,420

1,350

1,460

1,490

1,620

1,770

1,880

2.O5O 

2 250

2)240

45,260

1,460

8.11

9.35

89,770

June

2,230

2,330

2,450

2,480

2.500

2,490

2,220

2,010

1,870

*1,580

1,460

1,390

1,430

1,270

1,170

1,000

875

853

826

896

861

757

692

672

646

628

610

580

544 

514

39,814

1,327

7.37

8.23

78,970

July

482

455

425

397

379

357

340

527

507

295

*283

276

291

268

257

247

240

230

223

216

210

207

200

194

191

IBS

185

177

171 

168

165

8,349

269

1.49

1.72

16,560

Aug.

160

157

154

152

147

144

144

142

140

134

152

150

128

*125

125

121

121

119

117

114

114

114

117

114

114

114

112

TI4

121 

125

132

3,995

129

0.717

0.85

7,920

Sept.

150 123-

119

117

114

110

110

108

108

108

108

108

108

108

108

108

108

*114

128

123

119

114

112

110

110

108

106

104

ToT 

104

3,559

112

0.622

0.69

6,660

Calendar year 1956: Max 3,67O Mln BO Mean 453 Cfsm 2.52 In. 34.28 Ac-ft 329, 1OO

Water year 1956-57: Max 2,500 Min BO Mean 342 Cfsm 1.90 In. 25.78 Ac-ft 247,600

Peak dischai 

2,700 cfs

ge (base. 1,2OO cfs).--May 19 (3 to 5 a.m.) 2,500 cfs (4.74 ft); June 5 (1O to 11 a.m.) 

(4.92 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 1 to Mar. 20, Mar. 22-28. No gage-height 

record Dec. 3-5, 8-10, Dec. 27 to Mar. 19, Mar. 22 to Apr. 14; discharge estimated on basis of 

weather records, records for Valley Creek at Stanley, Middle Pork Salmon River near Cape Horn, 

Johnson Creek at Yellow Pine, and other nearby streams.
SALMON RIVER BASIN 217

Big Creek near Big Creek, Idaho

Location. Lat 45°07' , long 114°55' , in NE^- sec. 36, T. 21 N., R. 12 E., on left bank 

three-quarters of a mile downstream from Cabin Creek, 1^ miles southeast of Wallace 

Ranch, and 19 miles east of Big Creek Post Office.

Drainage area. 470 sq mi, approximately.

Records available.--September 1944 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 3,950 ft (from river-profile map).

Prior to Oct. 22, 1948, staff gage at site a quarter of a mile downstream at different 

datum.

Average discharge. 13 years, 512 cfs (370,700 acre-ft per year).

Extremes. Maximum discharge during year, 4,440 cfs June 2 (gage height, 6.67 ft); minimum determined, 75 cfs Jan. 17 {discharge measurement).

1944-57: Maximum discharge, 5,800 cfs June 3, 1948 (gage height, 7.12 ft, from 

floodmark, former site and datum), from rating curve extended above 3,000 cfs by logarithmic plotting; minimum determined, 48 cfs Dec. 14, 1955 (discharge measurement).

Remarks. Records excellent except those for periods of ice effect or no gage-height

record, which are fair. No regulation. Small diversions above station for irrigation.

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.5 

1.7 

1.9 

2.1

113

157

219

2.5 

3.0 

3.5 

4.0

405

760

1.190

1,660

5.0 

6.0 

7.0

2,670

3,720

4,800

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

25

26

27

28

29

30

31

Total

Mean

Cfsra

In.

Ac-ft

Get.

183

180

177 

174

ITT

174

177

174

177

183

199

212

199

189

186

180

183

183

202

189

189

183

183

180

180

189

216

T56

180

189

193

5,766

186

0.396

0.46

11,440

Nov.

163

163

180 

189

*183

199

196

186

183

183

196

196

209

193

155

206

206

189

143

152

219

189

169

155

140

133

131

T30- 130

130

5,196

173

0.368

0.41

10,310

Dec.

150

160

170 

160

150

140

130

140

160

170

180

180

189

ISO

166

166

152

163

160

155

145

140

135

135

135

120

115

T55" 110

140

150

4,666

151

0.321

0.37

9,250

Jan.

140

130

110

110

120

130

130

140

140

150

150

ISO" 160

140

110

95

*85 ICO"

120

130

140

140

130

110

95

100

110

120

130

140

145

3,910

126

0.268

0.31

7,760

Feb.

145

145

145 

140

140

140

130

140

135

130

135

130

130

135

130

125

1^5

130

130

130

130

140

150

170

180

190 190"

160

-

4,000

143

0.304

0.32

7,930

Mar.

T50- 150

150 

150

150

150

150

160

170

170

170

170

160

150

160

160

160

155

*152

160

163

157

155

157

157

152

150

155

160

166

172

4,891

158

0.336

0.39

9,700

Apr.

166

ISS

172 

169

180

189

180

180

196

227

246

266

270

283

292

279

283

279

288

297

335

361

388

400

356

321

306

350

586

832

8,843

295

0.628

0.70

17,540

May

947

1.T30"

1,330 

1,250

1,360

1,490

1,670

1,970

2,320

2,320

2,340

2,640

2,940

2,940

2,720

2,800

2,760

2,810

2,990

2,700

2,320

2,060

1,910

1,790

1,790

1,990

2,320

2,630

3,390

3,590

5.710

70,927

2,288

4.87

5.61

140,700

June

3,710

3,980

4,080 

3,840

#3,820

3,780

3,160

2,990

2,740

2,310

2,080

2,000

1,910

1,660

1,470

1,330

1,220

1,190

1,250

1,410

1,420

1,280

1,150

1,180

1,210

1,140

1,140

1,170

1,110

1.060

61,790

2,060

4.38

4.89

122,600

July

1.020

9S5

920

848

776

752

720

672

640

*608

586

565

551

537

498

478

459

441

435

423

411

411

411

383

366

366

345

335

330

321

511

16,884

545

1.16

1.34

33,490

Aug.

297

252

288 

279

270

275

275

270

261

249

249

246

242

238

230

230

223

219

216

212

212

209

206

202

199

199

196

139

206

209 

238

7,336

237

0.504

0.58

14,550

Sept.

219

209

199 

196

193

189

189

183

180

183

183

182

180

178

176

174

*172 '2~0"6"

223

139

199

196

193

186

183

180

177

172

172

172

5,643

188

0.400

0.45

11,190

Calendar year 1956: Max 4,960 Mln 70 Mean 660 Cfsml.40 In. 19.11 Ac-ft 478,800

Water year 1956-57: Max 4,080 Mln 85 Mean 548 Cfsra 1.17 In. 15.83 Ac-ft 396,500

Peak discharge (base. 2,000 cfs).--May 13 (7 to 10 p.m.) 3,040 cfs (5.35 ft); June 2 (ll p.m.)

4,440 efs (6.67 ft) .________________________________________________________________

* Discharge measurement made on this day.

Note Stage-discharge relation affected by Ice Nov. 28 to Dec. 12, Dec. 21 to about Feb. 25. No 

gage^helght record Jan. 9-16, Jan. 27 to Mar. 18, Sept. 12-16; discharge estimated on basis of 

3 discharge measurements, weather records, records for Johnson Creek at Yellow Pine, Panther Creek 

near Shoup, and other nearby streams.

503667 O - 59 - 15
SALMON RIVER BASIN

South Pork Salmon River near Knox, Idaho

Location. Lat 44°39', long 115°42', in NWi sec. 11, T. 15 N., R. 6 E., on left bank 

800 ft downstream from Curtis Creek, 1 mile upstream from Warm Lake Creek, 1^ miles 

southwest of Knox, and 21 miles northeast of Cascade.

Drainage area. 92 sq mi, approximately.

Records available. September 1928 to September 1957.

gage. Water-stage recorder. Datum of gage is 5,090.31 ft above mean sea level, unad-

 Justed. Prior to Oct. 22, 1942, staff gage at site 800 ft downstream at datum 2.09 ft 

lower.

Average discharge.--29 years, 145 cfs (105,000 acre-ft per year).

Extremes.--Maximum discharge during year, 1,510 cfs June 3 (gage height, 6.15 ft); mini-

 mum daily, 30 cfs Jan. 17; minimum gage height recorded 2.45 ft Mar. 27.

1928-57: Maximum discharge. 1,620 cfs May 27, 1956 (gage height, 6.33 ft); minimum 

recorded, 14 cfs Nov. 3, 1952 (gage height, 2.23 ft), but may have been less during 

period of ice effect.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are fair. No diversion above station.

Revisions (water years ). WSP 1043: 1943.

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

2.4

2.5 

2.7 

3.0 

3.5

107

227

4.0 

4.5 

5.0 

5.5 

6.0

397

615

875

1,140

1,430

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

41

40

38

TO

38

38

38

40

42

46

65

62

51

49

46

44

43

50

65

49

48

46

*46

45

44

55

68

50

46

48

49

1,468

47.4

0.515

0.59

2,910

Nov.

50

48

45

46

44

58

55

48

48

49

53

51

63

IF

45

51

53

48

40

45

50

50

48

45

45

43

40

40

40

45

1,431

47.7

0.518

0.58

2,840

Dec .

40

45

*46

45

45

43

42

38

45

45

45

51

62

55

50

48

43

45

42

38

45

40

45

44

38

38

40

42

42

43

45

1,378

44.5

0.484

0.56

2,730

Jan.

43

45

10

35

38

40

*42

42

40

40

43

45

43

43

42

35

30

35

38

40

40

38

36

36

32

33

37

40

38

40

42

1,211

39.1

0.425

0.49

2,400

Feb.

43

42

42

42

42

42

40

43

47

40

43

40

41

42

39

39

40

*39

40

41

40

41

45

62

80

83

85

75

-

1,333

47.6

0.517

0.54

2,640

Mar.

62

58

56

54

53

50

51

66

73

- 75

64

58

55

52

55

53

51

*50

50

50

50

48

46

4T

49

48

48

49

53

55

58

1,681

54.2

0.589

0.68

3,330

Apr.

56

55

59

58

70

85

76

80

88

103

113

119

125

147

159

145

145

142

151

156

166

196

221

205

168

151

154

189

279

341

4,202

140

1.52

1.70

8,330

May

367

432

473

534

516

*534

615

675

864

815

810

969

964

996

986

952

942

1,070

1,160

969

805

737

700

665

670

737

800

885

1,040

1,060

1,190

24,932

804

8.74

10.08

49,450

June

1,240

1,340

1,590

*1,390

1,370

1,320

1,120

1,040

925

826

780

775

710

615

529

465

448

456

477

524

452

413

397

401

386

359

352

345

327

506

21,478

716

7.78

8.68

42 , 600

July

286

2ST

248

224

210

196

183

*175

161

154

145

158

131

125

121

115

111

107

105

101

98

94

90

86

85

85

81

78

76

71

70

4,215

136

1.48

1.70

8,560

Aug.

SB- 66

64

62

61

62

62

61

58

55

53

53

51

51

49

49

49

48

*46

46

46

46

46

45

44

43

45

43

45

48

53

1,613

52.0

0.565

0.65

3,200

Sept.

50

46

44

43

42

42

41

40

40

41

41

40

38

TO

38

38

38

*56-$£

48

46

44

43

41

38

41

40

38

38

38

1,267

42.2

0.459

0.51

2,510

Calendar year 1956: Max 1,530 Min 38 Mean 212 Cfsm 2.30 In. 31.40 Ac-ft 154,100

Water year 1956-57: Max 1,390 Min 30 Mean 181 Cfsm 1.97 In. 26.76 Ac-ft 131,300

Peak discharge (base. 600 cfs). May 19 (3 a.m.) 1,270 cfs (5.71 ft); June 3 (11:30 p.m.)

1,510 efs (6.15 ft}.________ _______________________________________

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 2, 3, 5, 15, 16, Nov. 19 to Dec. 10, Dec. 17, 

Dec. 19 to Feb. 19, Feb. 21, Mar. 1, 2, 13, 14, 23 (no gage-height record Jan. 17 to Feb. 17j discharge estimated on basis of 3 discharge measurements, weather records, records for Johnson Creek 

at Yellow Pine, and other nearby streams).
SALMON RIVER BASIN 219

Johnson Creek at Yellow Pine, Idaho

Location. Lat 44°58' , long 115°30' , in ME£ sec. 29, T. 19 H., R. 8 E., on right bank 

700 ft upstream from mouth and a quarter of a mile southwest of Yellow Pine.

Drainage area. 213 sq mi.

Records available.--August 1928 to September 1957.

Gage. Water-stage recorder. Datum of gage is 4,657.70 ft above mean sea level, datum 

of 1929, unadjusted.

Average discharge. 29 years, 340 cfs (246,200 acre-ft per year).

Extremes. Maximum discharge during year, 4,210 cfs June 2 (gage height, 6.74 ft); minimum, 50 cfs Jan. 17 (gage height, 1.02 ft).

1928-57: Maximum discharge, 5,440 cfs May 27, 1956 (gage height, 7.64 ft); minimum, 21 cfs Nov. 30, 1954 (gage height, 0.66 ft).

Remarks. Records excellent except those below about 100 cfs, which are good. Small diversion from Johnson Creek basin to Deadwood River basin (see Remarks for Deadwood Reservoir near Lowman).

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, in cubic feet per second)

1.0 

1.2 

1.5 

1.8 

2.1 

2.5

135

215

323

507

3.0

4.0 

5.0 

6.0 

7.0

770

1,420

2,300

3,390

4,610

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

96

94

91 

89

89

89

87

57

96

104

120

ITS' 129

110

106

104

102

104

122

112

108

104

104

*98

96

104

114

104

102

106

104

3,193

103

0.484

0.56

6,330

Nov.

94

91

100 

106

100

108

108

104

104

106

110

106

-94" 114

80

110

114

102

74

84

102

96

94

91

91

89

82

80

82

86

2,902

96.7

0.454

0.51

5,760

Dec.

82

89

94 

*94

89

89

86

77

94

92

94

94

96

9T

92

92

87

92

87

76

89

76

91

91

74_

74

77

80

80

82

87

2,691

86.8

0 .408

0.47

5,340

Jan.

82

86

74 

66

71

76

84

82

*80

80

84

86

82

82

80

65

61

TO

74

77

76

74

72

72

65

65

68

74

70

71

72

2,321

74.9

0.352

0.41

4,600

Feb.

74

72

72 

72

71

71

68

71

70

66

70

66

68

70

65_

65

66

65

66

68

*66

70

79

96

98

~5S 102

84

-

2,069

73.9

0.347

0.36

4,100

Mar.

79

77

79 

77

77

76

79

86

89

57

84.

86

82

74

3l

82

82

*80

79

80

80

79

76

82

82

80

80

80

82

86

89

2,515

81.1

0.381

0.44

4,990

Apr.

87

8689- 

89

94

98

96

98

102

112

118

127

133

142

149

147

152

154

159

164

180

200

232

248

228

215

209

252

366

487

5,013

167

0.784

0.88

9,940

May

541

S93

798 

861

951

*1,040

1,230

1,400

1,630

1,650

1,620

1,990

2,490

2,370

2,230

2,380

2,400

2,560

2,820

2,140

1,710

1,580

1,520

1,590

1,620

1,940

2,150

2,330

2,710

2 , 860

5,040

56,844

1,834

8.61

9.93

112,700

June

3,090

3,470

5,710 

*3,680

3,650

3,440

2,800

2,640

2,280

2,000

1,910

1,870

1,690

1,480

1,340

1,190

1,120

1,140

1,210

1,520

1,310

1,130

1,060

1,080

1,040

981

969

957

909

867

55,533

1,851

8.69

9.70

110,100

July

820

7BT

720 

655

602

571

532

492

*458

430

402

375

357

332

311

292

277

266

262

252

241

235

222

209

203

200

188

180

175 

167

159

11,349

366

1.72

1.98

22,510

Aug.

154

152

149 

142

137

137

137

133

129

124

120

118

116

114

110

108

106

104

102

*100

100

98

96

94

91

91

89

91

92 

104

118

3,556

115

0.54O

0.62

7,050

Sept.

ISO" 110

94 

91

89

87

86

82

82

82

82

82

80

80

77

77

76

*89

106

100

98

96

91

86

82

80

77

76

74 

74

2,586

86.2

0.405

0.45

5,130

Calendar year 1956: Max 4,860 Min 74 Mean 527 Cfsm 2.47 In. 33.68 Ac-ft 382, 6OO

Water year 1956-57: Max 3,710 Min 61 Mean 413 Cfsrn 1.94 In. 26.31 Ac-ft 298,600

Peak discharge (base. 1,8OO cfs).--May 19 (2 a.m.) 3,180 cfs (5.88 ft); June 2 (9 to 10 p.m.) 

4,210 cfs (6.74 ft).

* Discharge measurement made on this day.
220 SALMON RIVER BASIN

Mud Creek near Tamarack, Idaho

Location. Lat 45°00', long 116°21', in sec. 9, T. 19 N., R. 1 E., on left bank 0.5 mile 

upstream from Little Mud Creek, 3-J- miles northeast of Tamarack, and 5 miles upstream 

from mouth.

Drainage area. 15.8 sq mi.

Records available.--April 1937 to September 1939 (fragmentary), October 1939 to September 

1943 (discharge measurements only), September 1945 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 3,990 ft (by barometer). Prior to 

iSept. 18, 1945, staff gage at site 40 ft downstream at datum 1.21 ft higher.

Average discharge. 12 years (1945-57), 19.6 cfs (14,190 acre-ft per year).

Extremes.--Maximum discharge during year, 188 cfs May 13 (gage height, 3.92 ft); maximum 

gage height, 6.29 ft Feb. 27 (backwater from ice); minimum discharge, 1.0 cfs Sept. 2; 

minimum gage height, 2.21 ft Nov. 5, Feb. 5.

1937-38, 1945-57: Maximum discharge, 395 cfs Apr. 27, 1952 (gage height, 5.00 ft); 

maximum gage height recorded, that of Feb. 27, 1957; minimum discharge, 0.2 cfs 

Nov. 19, 20, 1952.

Remarks. Records good except those below 10 cfs, which are fair, and those for periods of 

ice effect, which are poor. Mo regulation or diversion.

Revisions (water years1.--WSP 1153: 1948.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, In feet, and discharge, in cubic feet per second)

2.2 0.9

2.3 2.4

2.4 4.7

2.5 7.7

2.6 12

Discharge, in cubic feet pe

2.7 

2.9 

3.2

3.5 

4.0

17

34

70

112

202

ond, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

1.7

l!7

1.8

1.8

1.8

1.8

1.8

1.8

2.4

3.6

4.7

4.0

3.3

2.6

2.2

2.2

2.6

3.3

2.4

2.2

2.2

2.6

2.6

3.1

3.8

5.6

47F

3.8

4.0

5.0

88.6

2.86

0.181

0.21

176

Nov.

4.0

3.6

4.0

3.6

4.0

3.8

3.8

4.0

*4.0

4.2

4.5

4.7

6.2

57?

4.0

4.1

4.2

4.0

3.2

3.2

3.2

3.2

3.5

3.2

3.0

3.0

3.0

2.5

275

2.6

112.7

3.76

0.238

0.27

224

Dec.

2.4

2.6

2.7

2.6

2.6

2.5

2.4

2.3

2.5

2.6

2.6

2.8

3.5

373

3.1

2.8

2.6

*2.6

2.5

2.3

2.6

2.3

2.5

2.6

2.4

273- 2.2

2.4

2.4

2.5

80.1

2.58

0.163

-0.19

159

Jan.

2.5

2.5

2.4

2.1

2.2

2.3

2.4

2.5

2.4

2.4

2.4

2.6

275

2.5

2.4

2.3

2.2

2.1

2.2

2.3

*2.4

2.2

2.1

2.0

1.9

1.8

1.7

27T

2.2

2.4

70.5

2.27

0.144

0.17

140

Feb.

2.5

2.5

2.6

2.6

2.5

2.4

2.4

2.5

2.5

2.4

2.5

2.4

2.5

2.4

2.5

2.3

2.3

2.3

2.4

2.4

2.4

2.5

3.5

5.0

11

25

55

BTJ

203.1

7.25

0.459

0.48

403

Mar.

*37

25

20

18

16

14

15

16

19

21

21

20

18

17

14

13 ISIS

16

19

22

22

21

19

20

20

22

22

34

44

50

661

21.3

1.35

1.56

1,310

Apr.

46

46

46

*44

57

70

70

70

76

86

93

108

130

147

152

125

110

106

108

110

131

142

145

128

104

86

78

82

100

122

2,918

97.3

6.16

6.87

5,790

May

136

145

165

147

128

*109

102

103

122

128

140

152

178

184

TT5

156

138

143

158

140

138

120

103

82

66

51

41

32

24

*21

19

3,547

114

7.22

8.35

7,040

June

T6- 16

13

12

11

10

10

13

10

10

8.9

8.5

8.5

9.3

8.5

7.4

6.8

6.5

*6.5

6.5

6.5

5.9

5.6

5.3

5.3

5.3

5.0

4.7

4.7

4 5

251.2

8.37

0.530

0.59

498

July

4.5

4.2

4.5

4.2

4.2

4.0

3.8

3.8

3.8

3.8

3.6

3.3

3.1

3.0

3.1

2.9

2.9

*2.9

2.9

2.9

2.9

2.6

2.6

2.4

2.4

2.2

2.. 2

2.2

2.0

2.0 

1.8

96.8

3.12

0.197

0.23

192

Aug.

1.8

1.8

1.7

1.7

1.8

2.6 278"

2.2

2.0

2.0

1.8

1.7

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.4

*1.4

1.4

1.2

T7?

1.2

1.2

1.6

1.6 

1.7

2.2

52.6

1.70

0.108

0.12

104

Sept.

1.6

1.6

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.7

ITS

*1.4

1.4

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.4 

1.4

39.9

1.33

0.084

0.09

79

Calendar year 1956: Max 190 Mln 1.2 Mean 23.1 Cfsm 1.46 In. 19.92 Ac-ft 16,780

Water year 1956-57: Max 184 Mln 1.2 Mean 22.3 Cfsm 1.41 In. 19.13 Ac-ft 16,120

Peak discharge (base, 1OO cfs).--Apr. 14 (9:30 p.m.) 165 cfs (3.80 ft); Apr. 22 (7 to 9 p.m.)

156 cfs (3.75 ft); May 3 (3 to 4 a.m.) 184 cfs (3.90 ft); May 13 (3 to 9 p.m.) 188 cfs (3.92 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov 1, Nov. 15 to Mar. 6.
SALMON RIVER BASIN 221

Little Salmon River at Riggins, Idaho

Location. Lat 45°24'50", long 116°19'30", in SE^-SW^ sec. 15, T. 24 N. , R. 1 E. , on right 

bank 250 ft upstream from highway bridge, half a mile upstream from mouth, and threequarters of a mile southwest of Riggins.

Drainage area . 576 sq mi.

Records available. February 1951 to February 1955, September 1956 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 1,760 ft (from topographic map).

Extremes. Maximum discharge during period September 1956 to September 1957, 5,720 cfs 

June 2 (gage height, 7.00 ft); minimum recorded, 142 cfs Sept. 17, 18, 30, 1957 (gage 

height, 1.15 ft), but may have been less during period of no gage-height record.

1951-55, 1956-57: Maximum discharge, that of June 2, 1957; maximum gage height, 

7.39 ft June 13, 1953; minimum discharge, 116 cfs Feb. 20, 1955; minimum gage height 

recorded, that of Sept. 17, 18, 30, 1957.

Flood about June 1, 1948, reached a discharge of 9,200 cfs (slope-area determination).

Remarks. Records excellent ejccept those above 2,000 cfs, which are good, and those for 

periods of no gage-height record, which are fair. Diversions for irrigation of about 

13,600 acres above station.

Discharge, In cubic feet per second, 1956

Sept.28............................. *216

29............................. 216

30............................. 209

* Discharge measurement made on this 

day.

Rating table, water year 1956-57 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used May 15 to June 6, June 21 to Aug. 29)

1.1 

1.3 

1.5 

2.0

128

185

256

500

3.0 

4.0 

5.0 

6.5

1,150

1,970

3,030

5,280

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

205

202

199

192

T92

195

192

195

195

202

241

272

306

276

252

241

234

241

264

252

245

241

260

272

272

285

357

371

320

347

428

7,946

256

15,760

Nov.

352

302

285

281

272

289

306

297

289

293

506

297

506

302

272

285

*293

297

245

256

268

264

256

252

249

241

238

226

226

2 3O

8,275

276

16,410

Dec.

226

226

238

238

230

223

209

182

223

234

252

268

306

320

30?

297

281

*281

272

256

252

234

245

249

230

223

223

223

223

223

226

7,615

246

15,100

Jan.

223

223

219

202

209

202

212

223

216

216

219

219

216

216

216

179

160

170

180

190

*190

185

180

180

170

170

180

190

185

190

200

6,130

198

12,160

Feb.

210

210

210

210

210

210

205

215

210

200

210

200

205

205

205

205

205

205

205

205

202

205

276

584

752

1,100

1,370

1,520

-

10,149

362

20,130

Mar.

1,240

*1,010

849

726

656

584

602

726

862

982

836

778

693

596

578

554

578

578

602

680

771

726

626

590

596

620

620

632

732

'1,110

1.300

23,033

743

45,690

Calendar year 1956: Max - Min - Mean -

Apr.

,240

,110

,220

,140

* ,210

,460

,360

,220

,180

,200

1,230

1,380

2.140

2,070

2,130

,820

,570

,430

,360

,340

,440

,520

,520

,480

,330

,160

,050

,O7O

,320

, 70O

42,400

1,413

84,100

May

2,050

2,350

2,520

2,500

2,540

2,560

2,590

*2,830

3,620

3,430

3,370

3,740

3,980

3,660

3,460

3,560

3,490

4,050

4,400

3,760

3,070

2,680

2,530

2,480

2,530

2,750

3,070

3,340

3,650

3,780

3,870

98,190

3,167

194,800

June

*4,040

4,550

4,480

4,310

4,340

3,870

3,190

3,710

3,420

2,970

2,720

2,490

2,140

1,940

1,810

1,620

1,560

1,680

1,730

1,680

1,570

1,460

1,400

*1,430

1,360

1,240

1,240

1,220

1,140

1,050

71,360

2,379

141,500

July

982

914

940

836

764

719

668

638

608

578

*536

512

489

466

444

423

402

386

366

357

347

342

333

320

310

302

289

285

276 

268

264

15,364

496

30,470

Aug.

256

252

245

238

234

249

260

252

249

234

230

*226

230

219

202

199

195

192

195

192

190

185

185

180

175

170

TICS

175

197 

199

195

6,570

212

13,030

Sept.

185

175

170

165

160

155

155

155

150

150

150

150

150

145

145

145

*144

150

158

161

155

152

152

150

150

147

147

147

144 

144

4,606

154

9,140

Ac-ft

Water year 1956-57: Max 4,550 Min 144 Mean 826 Ac-ft 598, 3OO

Peak discharge (base, 2,000 cfs).--Apr. 13 (1 p.m.) 2,290 cfs (4.34 ft); May 19 (2 a.m.) 5,280 cfs 

(6.66 ft); June 2 (9:30 p.m.) 5,720 cfs (7.00 ft). _________ ______ 

* Discharge measurement made on this day. 

Note. No gage-height record Jan. 17 to Feb. 13, Aug. 21-28, Sept. 1-16; discharge estimated on

basis of 1 discharge measurement, weather records, records for Johnson Creek near Yellow Pine, South

Pork Salmon River near Knox, and other nearby streams.
222 SALMON RIVER BASIN

Salmon River at Whitebird, Idaho

Location. Lat 45°45', long 116°20', in see. 22, T. 28^N., R. IE., on left bank just

 upstream from Whitebird Creek, half a mile downstream from Canfield-Joseph highway 

bridge and 1 mile southwest of Whitebird. Records include flow of Whitebird Creek.

Drainage area. 13,550 sq mi, approximately, includes that of Whitebird Creek. 

Records available.--August 1910 to September 1917, October 1919 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 1,412.65 ft above mean sea level, datum of

 T929, supplementary adjustment of 1947. Aug. 18, 1910, to Sept. 30, 1917, and Oct. 1, 

1919, to Sept. 13, 1920, staff gages at site 600 ft downstream at different datum. 

Sept. 14, 1920, to Jan. 2, 1931, chain gage on highway bridge 200 ft upstream at datum 

10 ft higher.

Average discharge.--45 years, 10,888 cfs (7,883,000 acre-ft per year).

Extremes.--Maximum discharge during year, 82,400 cfs June 6 (gage height, 30.39 ft); minimum, 2,430 cfs Jan. 19 (gage height, 11.44 ft).

1910-17, 1919-57: Maximum discharge, 106,000 cfs May 24, 1956 (gage height, 

33.05 ft); minimum, 1,580 cfs Dec. 11, 1932 (gage height, 10.23 ft), from rating curve 

extended below 2,200 cfs.

Maximum stage known, about 37.5 ft, June 1894, present datum (discharge, 120,000 

cfs).

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

 6T~water diverted above station for irrigation is a negligible percentage of total flow.

Revisions (water years).--WSP 753: 1932. WSP 1043: Drainage area.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

4,720 

4,650

4,590

4,540

4,520

4,520

4,500

4, 500

4,500

4,610

4,930

5,440

5,980

5,960

5,670

5,400

5,310

5,270

5,360

5,460

5,400

5,340

5,270

5,250

5,230

5,210

5,550

6,040

5,800

5,550

5,650

160,720

5,185

0.383

0.44

318,800

Nov.

5,690 

5,460

5,270

5,140

5,270

5,630

6,060

6,040

5,760

5,650

*5,670

5,710

5,840

5,920

5,670

5,270

5,170

5,570

5,520

4,990

4,560

4,840

5,120

4,950

4,880

4,720

4,480

4,310

4,190

4jl40

157,490

5,250

0.387

0.43

31 2, 400

Dec.

4,120 

4,240

4,650

5,170

5,420

5,080

4,750

4,290

4,070

3,950

4,650

5,380

5,820

5,900

5,900

5,630

*5,330

5,140

5,010

4,930

4,660

4,320

4,260

4,240

4,290

4,270

3,920

3,610

5,480

3,540

3,800

143,820

4,639

0.342

0.39

285,300

Jan.

4,080 

4,220

4,260

4,120

3,770

3,380

3,270

3,460

3,860

3,830

4,000

4,120

4,170

4,290

4; 590

4,410

3,690

2,940

2,500

*3,OSO

3,400

3,700

3,800

4,000

3,900

3,600

3,000

2,900

3,100

3,600

4,000

115,020

3,710

0.274

0.32

228,100

Feb.

4,400 

4,400

4,400

4,500

4,500

4,400

4,290

4,220

4,190

4,120

4,100

4,030

4,150

4,080

4,120

4,220

4,120

4,080

4,120

5,980

4,150

4,200

4,240

4,840

5,860

7,250

9,100

9,220

-

133,280

4,760

0.551

0.37

264,400

Mar.

8,170 

7,270

*6,660

6,380

6,220

5,960

5,820

5,940

6,420

7,040

7,140

6,680

6,280

5,960

5,610

5,400

5,610

5,710

5,820

6,000

6,300

6,380

6,100

5,800

5,710

5,740

5,710

5,610

5,670

6,500

6,890

192,300

6,203

0.458

0.53

381,400

Apr.

7,210 

7,000

6,940

6,810

6,946

*7,590

7,860

7,640

7,420

7,640

8,170

8,740

9,800

10,300

10,800

10,600

10,100

9,830

9,730

9,700

9,960

10,700

11,200

11,500

11,500

10,800

10,100

9,660

10,700

14,600

281,540

9,385

0.693

0.77

558,400

May

19,500

23,200

28,500

30,800

32,600

34,500

36,600

*41,700

50,500

54,700

53,700

55,000

61,100

65,100

64,800

64,200

64,000

63,700

67,400

70,500

64,600

57,500

53,100

48 , BOO

46 , 000

46 , 000

48,800

53,600

60,000

65,300

68, 900

tl,594.5

51 , 440

3.80

4.38

*3,163

June

*71,000 

73,900

79,100

80,100

80,900

81 , 800

76,200

71,700

69,500

60,800

54,800

50,50O

47,800

44,300

40 , 400

36 , 700

33,200

31 , 100

30 , 000

30 , 000

31,800

31,000

28,300

*2 7,2OO

26,800

26,100

25,700

25,500

24,9OO

24,000

*1, 415.1

47,170

3.48

3.88

*2,807

July

25,200

21*900

20,700

19.OOO

17,800

16,800

15,900

15,200

14,400

13,800

*13,300

12,700

12,400

12,000

11,500

11,000

10,500

10,000

9,860

9,660

9,480

9,220

9,030

8,700

8,420

8,190

7,940

7,660

7,440

7 ,190

397,290

12,820

0.946

1.09

788,000

Aug.

6,960 

6,720

6,540

6,460

6,3OO

6,260

6,280

6,100

5,920

5,720

5,590

5,46O

*5,360

5,250

5,120

5,020

4,920

4,840

4,790

4,700

4,650

4,540

4,520

4,480

4,390

4,340

4,510

4,510

4,390

4,660

4,830

163,730

5,282

0.390

0.45

324,800

Sept.

5,010 

5,020

4,900

4,740

4,610

4,540

4,470

4,340

4,290

4,220

4,220

4,260

4,220

4,170

4,140

4,070

»4,05O

4,080

4,340

4,750

4,680

4,700

4,660

4,520

4,410

4,340

4,310

4,240

4,150

4,050

132,500

4,417

0.326

0.36

262,800

Calendar year 1956: Max 140,000 Mln 2,920 Mean 15,670 Cfsm 1.16 In. 15.73 Ac-ft 11,370,000

Water year 1956-57: Max 81,800 Mln 2,500 Mean 13,390 Cfarn 0.988 In. 13.41 Ac-ft 9,694,000

* Discharge measurement made on this day.

* Expressed In thousands.

Mote. Stage-discharge relation affected by Ice Jan. 19 to Feb. 6.
GRANDE RONDE RIVER BASIN 223

Grande Ronde River at La Grande , Oreg.

Location.--Lat 45°21 I , long 118°08', near center sec. 36, T. 23., R. 37 E., on left 

bank 2 miles northwest of La Grande and 5 miles downstream from Fivepoint Creek.

Drainage area. 678 sq mi.

Records available.--October 1903 to September 1915, February 1918 to September 1923, 

October 1925 to September 1957. Monthly discharge only for some periods, published 

in WSP 1317. Published as "at Hilgard" 1903-15.

Gage. Water-stage recorder. Datum of gage is 2,830.86 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Mov. 6, 1903, to Sept. 30, 1915, staff gage 

at site 5 miles upstream, 1,000 ft downstream from Fivepoint Creek, at various daturas. 

Feb. 16, 1918, to June 28, 1923, and Oct. 1, 1925, to Nov. 24, 1931, staff gage at 

site 1 mile downstream at various datums.

Average d i s charge.--4 9 years, 384 cfs (278,000 acre-ft per year).

Extremes. Maximum discharge during year, 4.850 cfs Apr. 5 (gage height, 7.12 ft, from 

floodmark); minimum, 17 cfs Sept. 13-18 (gage height, 1.30 ft).

1903-15, 1918-23, 1925-57: Maximum discharge, 8,880 cfs Mar. 18, 1932 (gage height, 

8.90 ft), from rating curve extended above 4,300 cfs; minimum, 3.9 cfs Aug. 26, 1940 

(gage height, 1.23 ft).

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Since 1915, slight regulation by city of La Grande reservoir on Beaver 

Creek (capacity, about 900 acre-ft). Diversions for irrigation of about 400 acres 

above station. Since 1909, city of La Grande has diverted about 3 cfs from Beaver 

Creek above station for domestic water supply.

Revisions (water years). WSP 768: 1933. WSP 1397: 1904-11, 1913, 1915, 1919-20, 

1922-23, 1926, 1929-31, 1936-37, 1939, 1942.

Rating tables, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Feb. 24 Feb. 25 to Sept. 3O

1.2 

1.4 

1.7 

2.0

25

43

91

170

2.5 

3.0 

3.5

390

660

990

1.3

1.4

1.5 

1.7 

2.0 177

2.5 375

3.0 640

4.0 1,340

6.O 3,390

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

B

9

10

11

12

13

14

15

16

17

IB

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

*31

31

31

30

30

29

"25 28

29

33

40

43

44

43

39

38

40

42

46

44

42

40

40

42

46

50

55

55

55

50

55

1,249

40.3

2,480

Nov.

55

48

46

50

50

52

66

64

61

58

56

58

*58

61

50

43

70

80

60

46

48

50

55

55

50

48

46

46

44

14

1,623

54.1

3,220

Dec.

46

48

55

60

50

42

40

b3B

b46

b60

b200

801

65TT

515

425

435

345

*345

290

225

221

158

174

174

123

91

121

bllO

bllO

b!20

129

6,233

201

12,360

Jan.

139

113

113

blOO

blOO

90

100

loo

110

110

120

110

120

100

90

70

60

65

70

80

75

80

75

70

60

55

46

50

55

60

2,639

85. 1

5,230

Feb.

60

55

65

70

70

60

50

*b55

b60

b65

b70

b60

b60

b60

b7O

b65

b55

b60

65

65

50

65

90

500

1,120

2,180

*2,230

1,580

-

9,055

323

17,960

Mar.

1,180

950

BOO

650

650

700

800

900

950

900

850

BOO

750

700

650

650

700

750

*790

834

772

6BB

622

658

827

932

841

855

1,160

1,640

1^940

26,889

867

53,330

Apr.

1,750

1,360

1,250

1,210

5.160

*3,110

2,070

1,670

1,510

1,490

1,570

2,010

2,210

2,060

1,870

1,640

1,480

1,360

1,260

1,160

1,100

1,020

939

876

790

713

676

7(30"

841

1,190

44,050

1,468

87,370

May

1,430

1,780

2,020

1,750

1,620

1,530

1,430

1,450

*1,560

1,510

1,760

2,070

2,120

2,690

2,960

2,570

2,220

2,660

2,950

2,450

1,980

1,690

1,420

1,210

1,060

959

841

778

756

700

7(50

52,564

1,696

104,500

June

706

834

7(30"

640

574

536

465

460

406

362

330

518

302

310

322

298

302

239

227

216

205

1BB

177

*167

158

155

155

139

150

121

10,142

538

20,120

July

115

115

124

TI5

97

92

87

82

77

75

72

70

70

70

70

65

65

63

61

59

59

61

65

61

57

52

48

46

46

44

41

2,224

71.7

4,410

Aug.

34

54

34

34

34

38

38

36

34

31

31

*2B

26

25

24

22

22

21

20

20

19

19

19

19

19

19

19

19

20

25

30

813

26.2

1,610

Sept.

*22

21

20

19

IB

18

IB

IB

18

IB

IB

17

T5

IB

17

19

25

28

28

27

*26

24

22

21

22

26

27

27

655

21. B

1,500

Calendar year 1956: Max 5,O20 Min 28 Mean 646 Ac-ft 468, 9OO

Water year 1956-57: Max 3,160 Min 17 Mean 433 Ac-ft 313,700

Peak discharge (base, 1,900 cfs).--Feb. 26 (11 p.m.) 3,250 cfs (5.BB ft); Mar. 31 (7 to 9 p.m.) 

2,080 cfs (4.81 ft); Apr. 5 (about 7 p.m.) 4.850 cfs (7.12 ft); Apr. 13 (5 a.m.) 2.51O cfs 

(5.22 ft); May 3 (3 a.m.) 2,140 cfs (4.87 ft); May 14 (7:30 p.m.) 3,330 cfs (5.95 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 16 to Nov. 5, Nov. 19 to Dec. 7, Jan. 6 to Feb. 7, Feb. 19-24, 

Mar. 2-1B; discharge estimated on basis of recorded range in stage, weather records, and records 

for station near Elgin.
224 GRANDE RONDE RIVKR BASIN

Catherine Creek near Union, Oreg.

Location. Lat 45°09'20", long 117°46'40", in SE^ sec. 2, T. 5 S., R. 40 E., on right bank

3 miles downstream from Little Catherine Creek and 6 miles southeast of Union. 

Drainage area. 105 sq mi. 

Records available.--May 1906 to May 1907 (gage heights only), August 1911 to December 1912,

March to September 1915, February 1918 to September 1919, October 1925 to September

1957. Monthly discharge only for some periods, published in WSP 1317. 

Gage. Water-stage recorder. Datum of gage is 3,081.76 ft above mean sea level, datum of

1929, supplementary adjustment of 1947 (Oregon State Highway Department bench mark).

Prior to Nov. 28, 1938, staff gages at several sites within if miles of present site

at various datums. Nov. 28, 1938, to May 16, 1939, water-stage recorder at site 400 ft

downstream at datum 4.29 ft lower. 

Average discharge . 34 years (1911-12, 1918-19, 1925-57), 120 cfs (86,880 acre-ft per

year). 

Extremes. Maximum discharge during year, 946 cfs May 18 (gage height, 3.51 ft); maximum

gage height, 3.93 ft Dec. 11 (backwater from ice); minimum discharge, 13 cfs Nov. 1. 

1911-12, 1915, 1918-19, 1925-57: Maximum discharge, 1,740 cfs May 27, 1948 (gage

height, 4.57 ft); minimum, 6.5 cfs Feb. 4, 1955 (gage height, 0.44 ft), result of

freezeup. 

Remarks. Records good except those for periods of ice effect or no gage-height record,

which are fair. No regulation. Several small diversions for irrigation of about

130 acres above station. Since 1937, diversion to Big Creek in Powder River basin

for irrigation of up to 3,300 acres. 

Revisions (water years). WSP 1397: 1912-13, 1919, 1926, 1928-33, 1937, 1939, 1940(M),

1941-43, 1950.

Rating tables, water year 1956-57, except periods of ice effect 

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Nov. 6-18)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

1.0 

1.3

63

112

1.0 

1.5

60

143

2.0 

2.5 

3.3

270

450

830

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac- ft

Oct.

27

27

*27

27

27

26 26"

26

26

38

39

42

39

31

30

30

29

31

45

23

28

27

27

27

28

31

32

27

26

31

30

936

30.2

1,860

Nov.

20

3U

28

26

28

40

35

32

31

31

32

31

38

30

*30

32

35

29

20

22

24

30

28

26

24

24

22

20

22

24

844

28.1

1,670

Dec.

26

28

30

28

24

22

20

IB

30

32

100

260

m

86

76

67

60

*5B

53

49

49

47

46

42

50

46

44

44

48

50

50

1,701

54.9

3,370

Jan.

49

50

48

42

36

42

46

44

48

55

50

55

50

40

30

22

28

34

40

38

40

36

30

26

22

IB

19

20

20

22

22

1,122

36.2

2,230

Feb.

22

24

26

26

26

22

24

26

28

30

26

*26

30

32

30

26

28

28

24

20

22

24

30

80

*129

205

208

»TTO

1,392

49.7

2,760

Mar.

152

135

119

107

103

105

118

129

150

152

137

129

114

107

105

103

102

100

102

*105

110

109

97

llC

130

140

130

130

160

220

26O

3,970

128

7,870

Apr.

240

220

200

200

300

398

315

240

235

240

249

276

282

315

324

303

285

270

276

270

261

*249

252

240

218

195

220" 188

315

454

8,030

268

15,930

May

565

640

635

595

550

518

530

580

*635

610

620

610

575

535

506

510

510

765 %m 795

518

446

4O2

382 38"6

406

446

482

498

502

530

16,927

546

33,570

June

555

680

355

625

*615

555

442

442

362

315

279

273

261

246

218

192

180

180

190

185

170

161

156

158

*154

152

147

145

139

129

8,971

299

17,790

July

123

TTH

112

105

99

97

92

88

82

78

77

74

71

70

66

63

60

58

56

54

53

52

52

52

50

49

47

46

45

4343"

2,175

70.2

4,310

Aug.

42

IT

40

40

40

40

39

38

38

36

35

35

*34

33

32

31

30

30

29

29

28

28

27

27

27

27

28

29

29

31

33

1,026

33.1

2,040

Sept.

28

27

*27

27

26

25

25

25

25

25

24

24

24

24

24

24

24

26

27

27

26

25

*24

24

24

23

25

24

24

24

749

25.0

1,490

Calendar year 1956: Max 922 Min IB Mean 146 Ac-ft 106, 1OO

Water year 1956-57: Max 795 Mln IB Mean 131 Ac-ft 94,890

Peak discharge (base, 5OO cfs).--May IB (B:3O p.m.) 946 cfs (3.51 ft); June 2 (1O p.m.) 77O cfs

 (3.18 ft).

* Discharge measurement made on this day.

Note. No gage-height record Jan. 21 to Feb. 11, Mar. 24 to Apr. 4; discharge estimated on basis 

of weather records and records for Qrande Ronde River at LaQrande and near Elgin. Stage-discharge 

relation affected by ice Nov. 19 to Dec. 12, Dec. 25-3O, Jan. 3-20, Feb. 12-24.
GRANDE RCTOE RIVER BASIN 225

Grande Ronde River near Elgin, Oreg.

Location La t 45°31', long 117°56 I , in NW£ sec. 3, T. IS., R. 39 E., on right bank an 

eighth of a mile upstream from bridge on State Highway 82, li miles downstream from 

Willow Creek, and 3$ miles south of Elgin.

Drainage area. 1,250 sq mi, approximately. 

Records available. August 1955 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 2,660.31 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947.

Extremes.--Maximum discharge during year, 4,190 cfs May 20 (gage height, 10.42 ft); minimum, 22 cfs Aug. 30 (gage-height, 0.79 ft).

1955-57: Maximum discharge, 5,220 cfs May 12, 1956 (gage height, 11.78 ft); minimum, 21 cfs Sept. 3-5, 1955 (gage height, 0.73 ft).

Flood in May 1948 reached a stage of 2,672.9 ft on Corps of Engineers' gage at bridge 

an eighth of a mile downstream (discharge, 5,690 cfs, discharge measurement).

Floods in 1894 and 1917 were mucher higher, based on Corps of Engineers' flood profiles.

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

Many diversions for irrigation in valley above station.

Rating tables, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Dec. 12 Dec. 13 to Sept. 30

0.9 36

1.3 82

1.7 150

2.3 

3.0

4.0

270

445

740

0.8 

1.1 

1.5 

2.0

107

201

3.0 460

5.0 1,190

8.0 2,650

11.0 4,600

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

£9

30

31

Total

Mean

Ac- ft

Oct.

54

*55

56 

56

54

54

47 

44

42

45

46

49

58

62

64

127

196

T54

124

115

117

111

108

108

111

122

137

146

150

144

140

2,B96

93.4

5,740

Nov.

150

150

135 

129

139

139

139 

156

164

158

152

150

*152

156

164

152

154

178 ire

154

131

137

152

150

152

139

137

120

120

118

4,403

147

8,730

Dec.

115

118

113 

137

131

113

100 

95

90

IW

178

696

1.290

1,220

1,030

886

798

*696

643

559

502

466

394

403

370

328

315

275

272

282

288

13,011

420

25,810

Jan.

288

308 272" 

260

225

240

2OO 

2OO

220

265

248

262

245

230

216

195

150

130

TS5

150

170

170

170

170

170

160

150

ISO

150

160

160

6,224

201

12,350

Feb.

150

160

170 

170

170

180

150 

*120 T50"

150

140

130

130

130

130

140

150

160

170

160

150

170

250

494

1,360

2,520

3,410

*5,590

_

14,954

534

29,660

Mar.

5.040

2,560

2,260 

2,020

1.86O

1,840

2,101 

2,340

2,72O

2,940

2,720

2,420

2,180

1,920

1,660

1,490

1,460

1,460

1,500

*1,500

1,510

1,460

1,360

1.290

1,306

1,420

1,460

1,440

1,480

1,740

2,04O

58,400

1,884

115,800

Apr.

2,340

2,440

2,320 

2,210

2,250

3,400

4,080 

3,640

3,180

2,910

2,750

2,700

2,910

3,090

3,110

3,000

2,820

2,620

2,460

2,320

2,220

2,120

2,020

1,920

1,840

1,740

1,600

1,480

1.460

1,600

74,550

2,485

147,900

May

1,840

2,120

2,480 

2,790

2,880

2,860

2,810 

2,730

2,740

2,790

2,790

2,930

3,170

3,330

*3,740

4,050

3,950

3,780

3,970

4.160

3,950

3,610

3,280

2,960

2,660

2,430

2,240

2,080

1,960

1,880

1,810

90,770

2,928

180,000

June

1,760

1,800

1,820 

1,766

1,700

1,640

1,570 

1,480

1,410

1,300

1,180

1,060

950

870

850

814

734

657

598

562

535

520

490

*427

391

36O

342

328

310

280

28,498

950

56,520

July

258

24T

227 

227

218

201

185 

175

161

143

128

118

104

95

89

86

81

75

73

74

74

73

72

70

65

61

55

53

52

50

48

3,632

117

7,200

Aug.

45

46

48 

43

44

44

45 

45

44

45

44

*42

42

41

40

38

36

35

34

33

31

29

28

27

26

26

25

24

23

23

24

1,122

36.2

2,230

Sept.

26

28

*30 

35

30

. 29

30

28

27

26

26

26

25

26

27

26

25

25

24

25

27

28

28

27

26

25

25

26

27

29

807

26.9

1,600

Calendar year 1956: Max 5,180 Min 42 Mean 1,052 Ac-ft 763,600

Water year 1956-57: Max 4,160 Min 23 Mean 820 Ac-ft 593,500

Peak discharge (base, 3,000 cfs}.--Feb. 28 (5 to 6 a.m.) 3,720 cfs (9.73 ft); Apr. 7 (6 to 7 a.m.) 

4,150 cfs (10.36 ft); Hay 20 (8:30 a.m.) 4,190 cfs (10.42 ft).

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ic Dec. 7-9, Jan. 6-9, Jan. 17 to Feb. 23.
226 GRANDE RONDE RIVER BASIN

East Fork Wallowa River near Joseph, Oreg.

Location.--Lat 45° 16', long 117° 13', in SEj- sec. 29, T. 3 S., R, 45 E., on left bank a 

~quarter of a mile upstream from confluence with West Fork, 1 mile upstream from 

Wallowa Lake, and 6 miles south of Joseph.

Drainage area.--10 sq mi, approximately.

Records available. July 1924 to September 1957. Prior to October 1952, records published 

separately as East Fork Wallowa River near Joseph and Wallowa Falls powerplant tallrace 

near Joseph.

Gage. Water-stage recorder and concrete control. Datum of gage Is 4,517.69 ft above

mean sea level, datum of 1929 (Pacific Power & Light Co. bench mark). Prior to Apr. 8, 

1950, staff gage at same site and datum.

Average discharge.--33 years, 21.0 cfs (15,200 acre-ft per year).

Extremes. Maximum discharge observed during year, 188 cfs June 5, from river rating curve 

extended from 79 to 175 cfs by logarithmic plotting; minimum daily, 12 cfs for many 

days January to April.

1924-57: Maximum discharge, 450 cfs July 25, 1937 (no flow in powerplant tailrace), 

from rating curve extended above 80 cfs by logarithmic plotting; minimum daily, 6.6 cfs 

Feb. 13, 1927.

Remarks.--Records good. All records presented herein include flow in Wallowa Falls powerplant tailrace of Pacific Power & Light Co. Most of low flow is diverted at dam 1 mile 

upstream into a conduit 1 mile above Wallowa Falls powerhouse and discharged into West 

Pork a quarter of a mile below powerhouse.

Revisions (water years) . WSP 1217: Drainage area. WSP 1247: 1931, 1937(M), 1948-49, 

records for river station; 1948, records for tailrace station.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

19

19

19

19

19

19

18

18

17

IS

21

23

5T

19

19

19

19

19

19

18

18

18

19

18

19

18

18

17

17

17

19

581

18.7

1.87

2.16

1,150

Nov.

17

17

18

17

18

19

IB

*18

17

17

17

16

14

16

18

18

17

17

17

17

16

17

16

16

17

16

15

15

16

15

-

502

16.7

1,67

1.87

996

Dec.

15

15

16

15

15

15

TB~ 14

16

17

18

18

18

17

16

16

16

*16

16

15

15

15

15

15

15

14

14

14

14

14

14

478

15.4

1.54

1.78

948

Jan.

15

14

14

14

14

14

14

14

14

14

14

14

14

13

14

14

14

14

14

14

14

14

13

13

13

13

13

12

*13

13

426

13.7

1.37

1.58

845

Feb.

12

12

13

13

13

13

13

13

13

13

13

13

13

13

13

12

12

12

12

12

12

13

14

14

14

TB~ 17

14

-

-

-

366

13.1

1.31

1.36

726

Mar.

14

13

13

13

13

13

13

13

13

13

15

12

13

*13

13

12

12

12

12

12

12

12

13

12

12

12

12

12

12

12

12

390

12.6

1.26

1.45

774

Apr.

12" 12

12

12

12

12

12

12

12

12

12

12

12

14

13

13

13

13

12

13

13

13

13

13

12

12

12

14

18

*21

-

388

12.9

1.29

1.44

770

May

25" 23

27

28

26

26

29

32

39

38

60

78

65

63

57

57

59

91

74

61

*55

48

47

43

46

48

53

58

58

61

64

1,539

49.6

4.96

5.72

3,050

June

74

111

113

124

131

134

124

121

103

83

*93

86

76

69

61

54

51

52

53

52

49

49

48

50

±1

48

48

50

51

48

-

2,253

75.1

7.51

8.38

4,470

July

48

49

47

43

44

47

48

46

45

44

43

41

39

39

38

37

35

34

31

29

31

31

30

29

27

28

26

25

*26

26

25

1,131

36.5

3.65

4.21

2,240

Aug.

25

25

24

24

24

25

24

24

23

22

22

21

21

21

20

20

20

20

19

iJL

19

16

19

18

18

19

19

19

20

20

20

647

20.9

2.09

2.41

1,280

Sept.

19

IS

18

18

18

17

17

18

18

17

*17

17

17

17

17

16

15

17

17

17

17

17

14

13

17

15

15

16

16

16

-

501

16.7

1.67

1.86

994

Calendar year 1956 : Max 118 Win 9.8 Mean 28.3 Cfsm 2.83 In. 38.48 Ac-ft 20,520

Water year 1956-57 : Max 134 Min 12 Mean 25.2 Cfsm 2.52 In. 34.22 Ac-ft 18,240

* Discharge measurement made on this day.
GRANDE RONDE RIVER BASIN 227

Wallowa Lake near Joseph, Oreg.

Location.--Lat 45 "20"SO", long 117"13"30", in NW£ sec. 5, T. 3 S., R. 45 E., on trashrack 

structure near west end of Wallowa Lake Dam, three-quarters of a mile southeast of 

Joseph.

Drainage area. 52 sq mi, approximately.

Records available.--November 1903 to July 1906 (gage heights only), January 1912 to March 

1914, May to September 1915 (gage heights and change in contents only), October 1925 

to June 1926, December 1926 to September 1957. Month-end contents only for some periods, published in WSP 1317. November 1903 to March 1905 published as Wallowa River at 

Joseph. Change in contents for January 1912 to March 1914 and May to September 1915 

published with records for Wallowa River at Joseph.

Gage. Staff gage read once daily. Datum of gage is 4,355.66 ft above mean sea level, 

"cTatum of 1929. Nov. 12, 1903, to July 28, 1906, Jan. 13, 1912, to Mar. 31, 1914,

May 21 to Sept. 25, 1915, staff gages at several sites within half a mile of present

site at different daturas.

Extremes. Maximum contents observed during year, 47,830 acre-ft June 5-7 (gage height, 

 29.85 ft); minimum observed, 19,650 acre-ft Sept. 7-10, 27, 28 (gage height, 12.60 ft).

1925-57: Maximum contents observed, that of June 5-7, 1957; minimum observed, 

4,790 acre-ft Oct. 10, 1929 (gage height, 3.10 ft).

Remarks.--Reservoir is formed by concrete dam. Capacity, 42,750 acre-ft between gage 

Heights 0.0 (sill of outlet gates) and 26.8 ft (spillway crest). About 5,300 acre-ft 

dead storage above outlet gates, since channel is about 3.4 ft above outlet gates. 

Dead storage below outlet gates not known. Records are based on capacities above outlet gates.

Month-end gage height and contents, water year October 1956 to September 1957

Date

Feb . 28 ..........................................

May 31 ..........................................

Qage height 

(feet)t

-

21.70

28.95

_

Contents 

(acre-feet)

-

46,320

28,620

_

Change In contents 

(acre-feet)

+1,780

+10, 100

+480

+910

+8,370

-13,880

-8,980

t Gage height at 7 a.m.
228 GRANDE RONDE RIVER BASIN

Wallowa River at Joseph, Oreg.

Location.--Lat 45 8 20«, long 117°14", in NWij sec. 5, T. 3 S., R. 45 E., on left bank

1,000 ft downstream from Wallowa Lake Dam and three-quarters of a mile south of Joseph.

Drainage area.--52 sq mi, approximately.

Records available.--November 1903 to August 1907, June 1908 to March 1914, May to September 1915, December 1926 to September 1957. Monthly discharge only for some periods, 

published in WSP 1317. Published as "near Joseph" 1904-5, 1907-11, 1937-49, and as 

"below Wallowa Lake near Joseph" 1931-36.

Gage.--Water-stage recorder. Datum of gage is 4,326.86 ft above mean sea level, datum of

 1929. Nov. 12, 1903, to Sept. 25, 1915, staff gages at several sites at lake outlet 

or near present site at different datums.

Average discharge.--30 years (1927-57), 125 cfs (90,500 acre-ft per year), adjusted for 

storage and diversion.

Extremes.--Maximum discharge during year, 1,200 cfs June 5 (gage height, 4.75 ft); minimum daily, 15 cfs Apr. 15-25.

1903-15, 1926-57: Maximum discharge, that of June 5, 1957; no flow at times.

Remarks.--Records good. Monthly discharges adjusted for storage in Wallowa Lake (see 

preceding page) and diversions from Wallowa Lake by Silver Lake Canal and Joseph 

powerplant (plant destroyed July 1956). Silver Lake Canal diverts at Wallowa Lake Dam 

for irrigation of 4,900 acres northeast of Joseph. City of Joseph diverts less than 

1 cfs from Wallowa Lake for municipal use.

Revisions (water years) . WSP 1397: 1906.

Rating tables, water year 1956-57 (gage height, In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used June 14-28)

Oct. 1 to May 12 May 13 to Sept. 30

1.2 

1.5 

2.0

42

114

1.1

1.2

1.3 

1.6 

2.0

11

18

27

66

138

2.5 

3.0

4.0

4.7

247

370

720

1,160

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

2028"

30

30

30

30

30

31

32

32

33- 33

33

33

33

33

33

33

33

33

33

29

26

*25

25

25

25

25

25

27

29

917

29.6

1,820

Nov.

29

29

29

29

29

27

2T

27

*27

27

27

27

27

27

27

28

28

28

28

28

28

28

28

*28

28

28

28

28

28

53_

840

28.0

1,670

Dec.

41

41

41

41

42

42

42

42

42

42

42

42

*42

42

42

42

42

42

42

42

42

42

42

42

41

41

39

36

3T

36

36

1,269

40.9

2,520

Jan.

3636-

36

36

36

36

35

35

35

35

35

35

35

35

35

35

35

35

35

35

35

*35

35

35

34

34

34

34

34

34

34

1,084

35.0

2,150

Feb.

343"4

34

34

34

34

34

34

33

33

33

33

33

*33

33

33

33

33

33

33

33

33

33

33

33

29

£5

25

_

912

32.6

1,810

Mar.

28

32

32

32

32

32

32

32

32

31

29

29

*29

28

32

36

3T

36

36

36

35

30

27

2T

27

27

27

27

27

27

27

950

30.6

1,880

Apr.

27

27

27

27

27

27

27

27

27

27

27

27

27

23

15

15

15

15

15

15

15

15

15

 15

15

18

26

28

28

27

666

22.2

1,320

May

27

262~6

26

26

26

26

27

28

28

47

100

267

379

397

*412

421

484

658

514

*493

436

403

391

365

350

360

373

394

418

490

8,518

275

16,900

June

562

634

874

968

*1,150

1,020

*898

975

880

795

*730

675

487

424

379

350

365

385

*38S

373

368

352

350

376

409

391

373

382

365

540

16,998

567

33,720

July

332

320

302

308

325

340

340

362

394

427

457

505

526

499

496

499

*496

490

484

463

451

433

421

400

385

355

345

340

320

*285

275

12,375

399

24,550

Aug.

215- 256

197

197

203

208

193

182

178

174

176

170

165

170

172

172

182

184

180

174

172

172

165

155

153

153

136

132

132

104

91

5,313

171

10,540

Sept.

86

86

84

69

62

62

53

51

40

40

40

40

40

39

39

39

51

52

52

52

52

52

52

*51

51

37

25

25

24

24

1,470

49.0

2,920

Adjusted for change In contents In Wallowa Lake and diversion by Silver Lake Canal

Mean

Cfsm

In.

Ac-ft

62.6

1.20

1.39

3,850

56.0

1.08

1.20

3,330

60.8

1.17

1.35

3,740

46.4

0.892

1.03

2,850

52.4

1.01

1.05

2,910

55.0

1.06

1.22

3,380

63.7

1.22

1.37

3,790

415

7.98

9.19

25,490

574

11.0

12.31

34,130

274

5.27

6.08

16,870

106

2.04

2.35

6,520

60.0

1.15

1.29

3,570

Calendar ye 

Water year

ar 1956: 

1956-57:

Max 

Max

483 

1,130

Mln 

Mln

2.1 

15

Mean 

Mean

102 

141

Ac-ft 

Ac-ft

73, 

101,

760 

800

Adjusted

Calendar ye 

Mater year

ar 1956: 

1956-57:

Mean 

Mean

t!71 

152

Cfsm 

Cfsm

t3. 

2.

29 

92

In. 

In.

t44.73 

39.83

Ac-ft 

Ac-ft

t!24 

110

,100 

,400

* Discharge measurement made on this day: 

t Adjusted also for diversion by Joseph powe irplant tallrace January to July 1956 (plant destroyed).
GRANDE RONDE RIVER BASIN 229

Hurricane Creek near Joseph, Oreg.

Location.--Lat 45°20', long 117°18', in NEv sec. 3, T. 3 S., R. 44 E., on left bank 

350 ft upstream from Intake of Moonshine ditch and 3? miles southwest of Joseph.

Drainage area. 31 sq ml, approximately.

Records available.--April to September 1915, April 1924 to September 1957. Monthly discharge only for some periods, published In WSP 1317.

Gage.--Water-stage recorder. Altitude of gage Is 4,500 ft (by barometer). Apr. 27 to 

Sept. 3, 1915, staff gage at site 250 ft downstream at different datum. Apr. 23, 1924, 

to June 13, 1933, water-stage recorder at site 150 ft downstream from present site at 

different datum.

Average discharge. 33 years (1924-57), 72.3 cfs (52,340 acre-ft per year).

Extremes.--Maximum discharge during year, 816 cfs June 5 (gage height, 4.07 ft); minimum,

 7.1 cfs Feb. 1 (gage height, 1.47 ft).

1915, 1924-57: Maximum discharge, 1,110 cfs June 9, 1948 (gage height, 3.55 ft); 

maximum gage height, 4.69 ft June 13, 1955 (backwater from debris); minimum discharge, 

2.8 cfs Mar. 2, 1955 (gage height, 1.22 ft), result of ice Jam upstream.

Remarks.--Records good except those for period of shifting control, which are fair. No 

regulation or diversion above station.

Revisions (water years ).--WSP 1397; 1915, 1925-28.

Rating tables, water year 1956-57, except period of shifting control (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Dec. 10

1.7 16

1.9 29

2.0 39

Dec. 11 to May 31

12

17

June 1 to Sept. 3O

1.6

1.7 

1.9 

2.1 

2.4 

2.7 

3.0

33

55

110

225

400

2.0

2.1

2.2 

2.5 

2.9 

3.4 

4.0

5.0

11

20

65

165

355

760

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

B

9

10

11

12

13

14

15

16

17

16

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

36

34

33

32

31

31

30

29

30

36

33

33

32

30

30

30

*29

31

30

30

26

28

26

27

27

28

26

26

26 

26

26

926

29.9

0.965

1.11

1,840

Nov.

23

23

25

26

28

 32

30

29

28

28

26

28

26

23

Si

23

29

27

21

21

24

25

24

23

23

23

22

21

21

21

746

24.9

0.803

0.90

1,460

Dec.

21

23

24

23

21

20

18

19

23

34

43

36f

40

 36

36

34

32

31

30

29

26

23

25

27

24

23

24

24

25 

25

848

27.4

0.684

1.02

1,660

Jan.

25

26

24

21

24

 25

26

27

28

21

28

28

26

28

26

26

27

26

26

26

25

25

25

25

24

24

24

23

22 

22

 22

785

25.3

0.816

0.94

1,560

Feb.

19

19

16

18

17

17

17

16

18

17

17

 17

17

17

17

17

17

17

17

17

16

17

20

21

20

2_9_

23

20

-

514

18.4

0.594

0.62

1,020

Mar.

20

19

20

20

20

20

21

21

2322"

21

20

 20

19

19

19

19

16

18

18

18

16

17

IS

18

18

18

18

20 

20

20

600

19.4

0.626

0.72

1,190

Apr.

20

20

20

20

24

23

23

23

24

26

27

28

28

32

32

32

33

33

34

35

37

37

37

37

36

36

36

43

64 

*86

986

32.9

1.06

1.18

1,960

May

103

IT9

119

119

125

126

152

189

235

220

265

346

348

335

323

267

293

400

3T4

 311

270

240

225

220

225

245

287

329

354 

380

394

7,962

257

8.29

9.55

15,790

June

410

452

490

680

*704

564

*470

463

355

297

 289

297

262

230

212

169

 160 192"

212

209

169

186

196

223

212

209

251

254

237 

230

9,386

313

10.1

11.26

16,620

July

220 216-

209

195

212

216

202

195

192

189

192

163

177

168

156

 150

141

128

125

122

130

135

120

115

106

105

100

92

100 

*98

92

4,783

154

4.97

5.74

9,490

Aug.

85

79

77

75

73

71

67

63

62

62

56

55

53

51

51

46

48

48

46

46

44

44

42

42

42

40

40

40

39 

39

36

1,666

53.8

1.74

2.00

3,310

Sept.

36

36

36

36

34

34

34

34

34

34

36

36

34

33

32

32

30

29

28

26

24

21

19

16

16

13

12

10

10 

9.2

616.2

27.2

0.877

0.96

1,620

Calendar year 1956; Max 525 Mln 18 Mean 95.4 Cfsm 3.06 In. 41.87 Ac-ft 69,230

Water year 1956-57: Max 704 Mln 9.2 Mean 82.3 Cfsm 2.65 In. 36.02 Ac-ft 59,560

Peak discharge (base, 400 cfs).--May 16 (6 p.m.) 494 cfs (3.32 ft); June 5 (7 p.m.) 616 cfs 

(4.07 ft). ft).___________________________

* Discharge measurement made on this day.

Note. Shifting-control method used May 8 to June 9.
230 GRANDE RONDE RIVER BASIN

Lostine River near Lostine, Oreg.

Location.--La t 45°26 I , long 117°25' , in NW£ sec. 34, T. IS., R. 43 E., on left bank 

3^ miles south of Lostine and 9 miles upstream from mouth.

Drainage area.--70 sq mi, approximately.

Records available.--August 1912 to March 1914, April to September 1915, July 1925 to 

September 1957. Monthly discharge only for some periods, published in WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 3,650 ft (by barometer). Aug. 27, 1912, 

to Sept. 25, 1915, staff gage at site 500 ft upstream at different datum. July 21, 

1925, to Sept. 30, 1929, water-stage recorder at site 100 ft upstream at datum about 

1.5 ft higher. Oct. 1, 1929, to Dec. 15, 1953, water-stage recorder at site 85 ft 

downstream at datum 1.00 ft higher.

Average discharge.--33 years (1912-13, 1925-57), 192 cfs (139,000 acre-ft per year).

Extremes.--Maximum discharge during year, 2,170 cfs June 2 (gage height, 6.84 ft); minimum recorded, 28 cfs Dec. 7 (gage height, 0.71 ft).

1912-15, 1925-57: Maximum discharge observed, 2,540 cfs May 27, 1913 (gage height, 

6.60 ft, site and datum then in use); minimum recorded, 10 cfs Nov. 28-30, 1936.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow slightly regulated since 1916 by Minam Lake (usable capacity, 

about 1,000 acre-ft). Diversions for irrigation of about 130 acres of which about 

20 acres are below station.

Revisions (water years).--WSP 1397: 1913, 1942.

Rating tables, water year 1956-57, except periods of ice effect (gage

height, in feet, and discharge, In cubic feet per second)

(Shifting-control method used May 9-20, May 31, June I)

Oct. 1 to June 1 June 2 to Sept. 30

0.7 27 3.0 440 0.6 27 3.0 490

1.0 62 4.0 720 1.0 68 4.O 825

1.5 130 6.0 1,580 1.5 142 5.0 1,240

2.0 215 2.0 237 7.0 2,270

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

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

Total

Mean

Ac-ft

Oct.

44

42 

42

42

42

40

40

3940"

46

62

58

56

49

46

48

45

52

54

49

48

42

*44

40

45

48

48

43

40

40

42

1,416

45.7

2,810

Nov.

38

37

40

37

40

*56

50

46

46

46

46

46

52

42

44

52

72

56

b48

54

51

48

*45

43

42

40

40

40

42

42

1,381

46.0

2,740

Dec.

42

45 

54

54

52

42

b40

b36

5T

89

125

106

129 *s3

85

82

75

*74

70

66

63

58

58

58

b55

b50

50

b50

b48

b46

52

2,004

64.6

3,970

Jan.

51

52 

48

b42

b46

b46

b46

45

45

b44

46

*45

45

45

45

b42

b38

b36

b42

b50

a55

a55

a50

a44

b38

b34 a38~

a40

a36

*b40

b50

1,379

44.5

2,740

Feb.

b55

a 50 

a46

a50

a55

a46

b40

b46

b50

45

a 50

a44

a38

a40

38

38

b36

b34

b34

b36

b36

42

44

55

63

129 102"

82

-

1,424

50.9

2,820

Mar.

74

67 

62

58

58

57

66

72

79

76

72

*70

65

61

62

62

61

60

60

60

58

56

54

56

57

54

54

55

66

78

84

1,974

63.7

3,920

Apr.

80

78 

76

7498"

101

92

88

92

101

103

113

117

132

134

132

*127

127

130

134

139

140

140

142

140

134

134

134

231

*340

3,803

127

7,540

May

445

492

480

495

515

520

564

681

822

724

804

" 1,150

1,120

948

786

783

*828

1,200

1,090

748

597

508

462

450

495

588

699

853

988

1,070

1,200

23,105

745

45,830

June

1,380

1,880 

1 , 860

*1,740

*1,800

1,760

*1,280

1,330

1,060

*952

904

964

864

692

559

475

448

514

618

629

556

550

608

724

710

688

814

839

783

713

28,694

956

56,910

July

674

640 

622

571

601

618

553

520

490

472

463

433

400

370

342

315

284

248

227

221

244

270

229

207 1-93

183

177

161

*166

161 

147

11,202

361

22,220

Aug.

134

122 

112

108

108

106

98

91

86

85

81

76

67

66

65

64

62

61

60

58

57

56

55

53

52

49

49

52

55

57 

58

2,303

74.3

4,570

Sept.

50

4T 

46

*45

44

42

41

41

41

40

40

41

42

42

43

44

44

42

40

42

44

45

46

47

36

34

25

34

35

36

1,249

41.6

2,480

Calendar year 1956: Max 1,800 Min 36 Mean 258 Ac-ft 187,000

Water year 1956-57: Max 1,880 Mln 34 Mean 219 Ac-ft 158,600

>ak discharge (base, 1,100 cfs).--May 12 (11 to 12 p.m.) 1,280 cfs (5.50 ft); May 18 (10 p.m.) 

1,440 cfs (5.81 ft); June 2 (9 p.m.) 2,170 efs (6.84 ft).______________________________

Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of 

Creek near Wallowa and Hurricane Creek near Joseph. 

b Stage-discharge relation affected by ice.

eather records and records for Bear
GRANDE RONDE RIVER BASIN 231

Bear Creek near Wallowa, Oreg.

Location.--Lat 45°32', long 117°33', in NEi sec. 34, T. IN., R. 42 E., on right bank 

30 ft downstream from unused bridge, 3 miles southwest of Wallowa, and 4j miles 

upstream from mouth.

Drainage area.--68 sq mi, approximately.

Records available.--April to September 1915, April 1924 to September 1957. Monthly discharge only for some periods, published In WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 3,250 ft (by barometer). Apr. 13 to 

Sept. 16, 1915, staff gage at site 1 mile upstream at different datum. Apr. 22, 1924, 

to Nov. 2, 1931, water-stage recorder at site If miles upstream at different datum.

Average discharge.--33 years (1924-57), 112 cfs (81,080 acre-ft per year).

Extremes. Maximum discharge during year, 1,240 cfs June 2 (gage height, 3.07 ft); minimum daily, 10 cfs Oct. 1-10, Feb. 18-21, Sept. 6, 7, but may have been less during 

periods of ice effect.

1915, 1924-57: Maximum discharge, 1,620 cfs Apr. 22, 1936 (gage height, 3.82 ft, 

from floodmark), from rating curve extended above 930 cfs; minimum daily, 3 cfs 

Jan. 20, Feb. 1, 1937.

Remarks. Records fair. No regulation. Diversions for irrigation of about 43 acres

above station. Water for irrigation of about 440 acres in Lostine River basin diverted 

from Little Bear Creek, a tributary above station, in sec. 32, T. 1 S., R. 43 E.

Revisions (water years).--WSP 1397: 1915, 1927, 1929-30, 1932, 1936-40, 1945, 1949.

Rating table, water year 1956-57, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used July 19 to Sept, 30)

0.9 

1.0 

1.2 

1.5

2.0 

2.5 

3.0

230

540

1,130

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ao-ft

Oct.

10

To

10

10

10

10

10

10

10

13

13

16

15

14

14

14

14

17

16

15

16

15

*16

15

16

17

IB- 18

15

17

17

429

13.8

851

Nov.

16

18

16

16

16

*26

30

28

28

29

30

29

35

29

31

30

5243"

36

40

36

32

*30

28

26

24

24

24

26

26

854

28.5

1,690

Dec.

28

3T

44

44

40

36

32

30

40

70

100

128

174

TTT

*144

128

112

105

93

84

78

68

63

58

50

46

42

38

40

36

32

2,186

70.5

4,340

Jan.

36

34

30

28

30

28

30

30

30

30

30

30

34

32

a30

a26

a24

a22

a26

28

a28

a28

a24

a26

a26

a20

a!6

a!4 aTB"

*14

14

813

26.2

1,610

Feb

15

14

13

13

14

13

11

12

13

12

13

12

11

11

11

11

11

10

10

10

10

11

20

64

122

180

186

15?

-

986

35.2

1,960

Mar.

128

TTo

98

86

78

72

80

93

115

118

112

*103

88

78

72

68

68

68

68

74

78

76

72

68

68

68

6666"

78

98

115

2,630

84.8

5,220

Apr.

120

115

105

100

138

174

165

*147

141

144

144

153

153

165

168

165

159

147

144

138

141

138

138

135

125

115

110

1S5

234

*397

4,553

152

9,030

May

500

549

532

524

524

508

532

612

899

729

707

912

- 912

800

718

685

621

812

685

532

418

342

286

292

324

390

460

516

558

603

621

18,103

584

35,910

June

718

977 938"

*899

899

912

674

*652

516

*439

418

468

425

319

257

223

216

2^7

324

319

*270

252

280

336

308

286

319

324

302

262

13,789

460

27,350

July

234

220

216

186

189

180

162

144

125

118

108

*98

88

76

68

66

60

52

50

46

46

58

46

42

43

42

39

40

*39

36

34

2,951

95.2

5,850

Aug.

34

3F

29

28

28

29

28

25

24

23

23

23

22

22

17

18

17

17

17

16

16

15

*14

14

14

14

13

IT

14

14

16

630

20.3

1,250

Sept.

14

12

12

*12

12

11rr

12

12

12

12

12

12

12

12

12

12

14

14

13

13

12

12

12

12

12

12

14

14

14

372

12.4

738

Calendar year 1956: Max 1,050 Min 9.6 Mean 147 Ac-ft 106,800

Water year 1956-57: Max 977 Min 10 Mean 132 Ac-ft 95,800

Peak discharge (base 

(3.07 ft).

600 cfs). May 12 (11 p.m.) 1,220 cfs (3.06 ft); June 2 (5:30 p.m.) 1,240 cfs

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis 

River near Lostine and Hurricane Creek near Joseph.

Hote. --Stage-discharge relation affected by ice Nov. 19 

Jan. 30 to Feb. 23.

f weather records and records for Lostine 

c. 11, Dec. 25 to Jan. 14, Jan. 20,
232 GRANDE RONDE RIVER BASIN

Grande Ronde River at Rondowa, Oreg.

Location. Lat 45°44', long 117°47', in NWij sec. 23, T. 3 N., R. 40 E. , on right bank at 

Rondowa, 500 ft downstream from Wallowa River and 13 miles northeast of Elgin.

Drainage area.--2.555 sq mi.

Records available. October 1926 to September 1957.

Gage. Water-stage recorder. Datum of gage is 2,281.87 ft above mean sea level, datum of 

1929 , supplementary adjustment of 1947.

Average discharge.--31 years, 2,084 cfs (1,509,000 acre-ft per year).

Extremes. Maximum discharge during year, 13,300 cfs May 19 (gage height, 7.70 ft); minimum, 389 cfs Jan. 17.

1926-57: Maximum discharge, 19,900 cfs May 28, 1948 (gage height, 9.76 ft); minimum, 225 cfs Dec. 19, 1935.

Remarks.--Records excellent. Flow slightly regulated by Wallowa Lake (see p. 227) and 

small reservoirs. Diversions for irrigation of about 95,000 acres above station, 

chiefly in vicinity of La Grande, Enterprise, and Wallowa; one transbasin diversion 

from Sheep Creek in Imnaha River basin for irrigation of about 6,500 acres in 

Wallowa Valley.

Revisions (water vears). WSP 1093: 1928-29, 1932-33, 1936, 1938, 1939(M), 1943. 

WSP 1397: T3ZT. WSP 1447: 1927.

Rating tables, water year 1956-57 (gage height, in feet, and discharge,

in cubic feet per second) 

(Stage-discharge relation affected by ice Jan. 17, 18, 26-29)

Oct. 1 to May 18 May 19 to Sept. 30

1.0 460

1.5 820

2.0 1,260

2.5 1,800

3.0 2,530

4.0 4,300

8.0 14,200

1.0 410

1.5 750

2.0 1,240

3.0 2,540

5.0 6,600

8.0 14,200

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

I 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

553 

546

539

532

525

518 

506

499 506"

539

630

616

637

616

588

581

680

718

756 '580

651

644

623

623

644

688

725

688

672

695

688

19,106

616

37,900

Calendar yeai

Nov.

665 

651

651

637

*644

710 

725

702

710

718

718

702

732

718

688

732

860

868

740

718

732

695

688

680

672

637

637

602

595 B~95~

20,822

694

41 , 300

Dec.

602 

665

672

688

644

616 

567

492

609

772

2,020

3,340

5.870

3,330

2,740

2,480

2,100

2,030

1,800

*1 , 620

1,500

1,350

1,260

1,200

1,110

964

884

876

860

828

980

43,469

1,402

86,220

Jan.

956 

964

900

748

732

658 

665

764

780

732

748

780

796

780

772

616

500

550

637

740

740

740

748

718

665

600

550

600

650

702

748

22,279

719

44,190

Feb.

740 

665

710

718

702

680 

*644

665

630

616

616

609

602

623

644

672

718

756

772

780

756

756

812

2,810

4,980

8,540

7,780

7,250

47,246

1,687

93,710

Mar.

5,820 

4,880

4,220

3,830

3,970

3,920 

5,300

5,820

6.250

5,950

5,280

4,780

4,160

3,720

3,430

3,380

3,450

*3,430

3,400

3,470

3,430

3,240

3,000

2.940

3,120

3,170

3,150

3,100

3,670

4,560

5,340

127,180

4,103

252,300

Apr.

5, $80 

5,040

4,760

4,500

6,260

7.650 

7,580

6,780

6,000

5,600

5,380

5,360

5,850

6,220

6,220

5,820

5,460

5,160

4,880

4,680

4,600

4,380

4,200

4,080

3,900

3,610

3,420

3,360

3,940

4,980

155,050

5,168

307,500

May

5,950 

7,200

*7,850

7,900

8,000

7,920 

7,900

8,380

9,900

9,450

9,620

10,600

10, 900

10,700

10,700

10,800

10,600

11,900

12,500

10,900

9,570

8,550

7,670

7,110

6,800

6,710

6,860

7,080

7,310

7,240

7,540

271,910

8,771

539,500

June

7,860 

9,160

9.760

9,160

9,010

9,090 

7,420

7,040

6,270

5,540

5,100

4,890

4,600

*3,980

5,500

5,100

2,850

2,760

2,950

2,950

2,730

2,590

2,540

2,810

2,760

2,740

2,780

3,020

2,930

2,710

144,580

4,819

286,800

July

2,540 

2,450

2,360

2,180

2,100

2,120 

1,970

1,840

1,750

1,670

1,610

1,570

1,520

1,450

1,570

1,300

1,250

1,180

1,110

1,070

1,050

1,150

1,060

1,010

990

950

900

890

890

870

B3±

44,941

1,450

89,140

Aug.

804 

*?50

686

670

663

686 

686

678

670

663

649

635

621

628

614

600

580

574

561

548

554

528

528

528

542

522

528

542

580

614

621

19,055

615

57,790

Sept.

600 

594

587

580

561

535 

522

516

516

*528

528

528

516

509

490

470

464

458

485

490

496

509

490

485

483

476

476

470

476

483

15,517

511

50, 580

' 1956: Max 12,200 Min 492 Mean 3,026 Ac-ft 2,196,000

Water year 1956-57: Max 12,300 Mln 458 Mean 2,551 Ac-ft 1,847,000

Peak discharge (base, 5,000 cfs).--Feb. 26 (8 p.m.) 10,500 cfs (6.61 ft); Mar. 9 (5:50 p.m.)

6,580 cfs (5.05 ft); Apr. 7 (l a.m.) 7,820 cfs (s.53 ft); May 19 (12:50 a.m.) 13,500 cfs (7.70 ft)j 

June 3 (1:50 a.m.) 10,100 cfs (6.52 ft).______________________________________________ 

* Discharge measurement made on this day.
GRANDE RONDE RIVER BASIN 233 

Grande Ronde River at Troy, Oreg.

Location. Lat 45°57' , long 117°27' , in NW£ sec. 4 , T. 5 N. , R. 43 E. , on downstream side 

of left end of bridge at Troy, 100 ft downstream from Wenaha River and at mile 45.4 

(river-profile survey) .

Drainage area. 3,275 sq mi.

Records available. August 1944 to September 1957. Monthly discharge only for August

1944, published in WSP 1317.

Gage . Water-stage recorder. Datum of gage is 1,587.13 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Oct. 1, 1949, wire-weight gage at 

same site at datum 12.00 ft lower.

Average discharge . 13 years, 3,327 cfs (2,409,000 acre-ft per year).

Extremes . Maximum discharge during year, 17,400 cfs May 19 (gage height, 8.78 ft); minimum, 474 cfs about Jan. 28 (gage height, 1.84 ft).

1944-57: Maximum discharge observed, 30,000 cfs Dec. 15, 1946 (gage height, 

11.20 ft, present datum); minimum, 434 cfs Nov. 29, 1952 (gage height, 1.71 ft), result 

of freezeup.

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

good. Flow slightly regulated by Wallowa Lake (see p. 227) and small reservoirs. 

Diversions for irrigation of about 95,000 acres above station, chiefly in vicinity of 

La Grande, Enterprise, and Wallowa; one transbasin diversion from Sheep Creek in 

Imnaha River basin for irrigation of about 6,500 acres in Wallowa Valley.

Revisions (water years). WSP 1397: 1946(M) , 1948-50.

Rating tables, water year 1956-57 (gage height, in feet, and discharge

in cubic feet per second) 

(Stage-discharge relation affected by ice Jan. 17, Feb. 6-9)

Oct. 1 to May 18 May 19 to Sept. 3O

2.1 

2.5 

3.0 

4.0

630

960

1,500

2,840

5.0 

6.0 

8.0 

9.0

4,630

7,220

14,000

18,700

2.0 

2.5 

3.0 

4.0

680

1,040

1,520

2,750

5.0 

6.0 

8.0 

9.0

4,460

6,720

13,800

18,500

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

708 

700

700

693

686

679

672

651

642

665

756

798

807

798

780

764

816

915

970

906

870

852

816

816

870

906

960

942

897

960

960

24,955

805

49,500

Nov.

906 

870

861

852

843

990

*1,020

980

960

960

970

970

1,030

1,040

960

980

1,240

1,310

1,130

1,000

1,030

990

970

970

951

942

915

879

834

834

29,187

973

57,890

Dec.

825 

825

980

897

879

852

756

700

834

1,000

1,960

5,760

6,770

6,150

4,630

4,500

3,740

3,480

*3,250

2,880

2,620

2,370

2,170

2,000

1,870

1,670

1,510

1,350

1,350

1,270

1,420

71,268

2,299

141,400

Jan.

1.510 

1,430

1,400

1,250

1,090

1,070

960

,100

,140

,110

,080

,090

,150

1,140

1,130

951

700

724

807

1,010

1,050

1,090

1,090

1,040

915

843

a800

a850

a900

a950

al,000

32,370

1,044

64,200

Feb.

al,000 

a950

al,000

al.OOO

a 950

900

*900

900

950

960

951

942

951

,000

,120

,160

,190

,280

,290

,270

1,170

1,170

1,190

2,860

7,630

12,200

12,600

10,400

-

69,884

2,496

138,600

Mar.

8,640 

7,220

5,940

5,250

5,280

5,220

7,310

8,760

9,090

8,700

7,680

6,910

5,910

5,100

*4,630

4,430

4,650

4,540

4,610

4,840

4,910

4,520

4,140

5,940

4,260

4,500

4,450

4,430

5,150

7,160

8,310

180,480

5,822

358,000

Apr.

8,490 

7,740

7,310

6,800

8,790

11,200

10,6OO

9,660

8,940

8,610

8,340

8,220

8,850

9,480

9,720

9,000

8,400

8,040

7,600

7,220

7,220

6,860

6,550

6,260

5,940

5,480

5,050

4,960

5,680

7,340

234,350

7,812

464,800

May

*8, 700 

9,930

10,900

10,600

10,800

10,600

10,300

10 , 600

14,000

14,300

13,600

14,000

14,500

14,000

14,300

14,000

13,800

14,900

16.400

14,400

12,500

*1 0,800

9,640

8,830

8,340

8.140

8,200

8,550

8,970

9,040

9,250

356,890

11,510

707,900

June

9,740 

11,000

12,200

11,500

11,000

11,200

9,140

8,300

7,570

6,690

6,150

5,790

*5,670

5,100

4,480

3,940

3,590

3,340

3,470

3,510

3,290

3,100

3.020

3,240

3,240

3,160

3,180

3,570

3,490

3,210

175,880

5,863

348,900

July

2,990 

2,860

2,780

2,600

2,470

2,470

2,350

2,210

2,090

1,970

1,910

1,860

1,780

1,740

1,650

1,550

1,460

1,380

1,310

1,250

1,220

1,270

1,240

1,180

1,150

1,130

1,070

1,050

1,040

al.OOO

*1,020

53,050

1,711

105,200

Aug.

1.010 

976

952

944

944

960

968

960

952

936

920

904

888

880

873

866

852

838

824

810

810

797

784

784

771

784

784

790

817

859

880

27,117

875

53,790

Sept.

a850 

a850

a 850

a850

aSOO

aSOO

a760

a760

a760

aSOO

*764

764

752

745

738

720

706

693

706

726

726

726

720

712

706

706

712

720

720

712

22,554

752

44,740

Calendar year 1956: Max 15,600 Min 642 Mean 4,156 Ac-ft 3,017,000

Water watyear 1956-57: j.astj-57: Max m16,400 ib,4ouMin mm642 Mean 3,501 Ac-ftC-IT; 2,535,000 2,o35,ooo

Peak discharge (base, 7,000 cfs).--Dec. 13 (5:30 p.m.) 7,510 cfs (6.10 ft); Feb. 26 (11:30 p.m.) 

15,100 cfs (8.24 ft); Mar. 9 (8 p.m.) 9,330 cfs (6.71 ft); Apr. 5 (10:30 to 11:30 p.m.) 11,600 of 

(7.40 ft); May 19 (5:50 a.m.) 17,400 efs (8.78 ft); June 5 (6:50 a.m.) 12,600 cfs (7.70 ft).

Discharge measurement made on this day.

No gage-height record; discharge estimated on basis of weather records, recorded range in stage,

records for station at Rondowa.

503667 O - 59 - 16
234 ASOTIN CREEK BASIN

Asotin Creek near Asotin, Wash.

Location. Lat 46°19'40", long 117 0 12'20", in SE£ sec. 20, T. 10 N., R. 45 E., on left 

bank 350 ft upstream from the Washington Water Power Co.'s diversion for water supply 

and irrigation, 5 miles upstream from George Creek, and 8 miles west of Asotin. Prior 

to May 17, 1957, at site 0.3 mile upstream.

Drainage area. 156 sq mi.

Records available. March to November 1904, April 1905 to February 1906, May to November 

1906, August to September 1910, July to October 1911, August 1928 to September 1957. 

Published as "at Shelman's Ranch, near Asotin" 1904-5.

Gage. Staff gage and crest-stage indicator; gage read twice daily. Datum of gage is 

1,435.78 ft above mean sea level (Washington Water Power Co.'s bench mark). Prior to 

Jan. 11, 1934, staff gages within 0.3 mile of present site at different daturas. 

Jan. 11, 1934, to May 17, 1957, at site 0.3 mile upstream at same datum.

Average discharge.--29 years (1928-57), 67.8 cfs (49,090 aere-ft per year).

Extremes.--Maximum discharge during year, 1,000 cfs May 8 (gage height, 10.03 ft, present 

site, 5.11 ft, old site), from rating curve extended above 357 cfs on basis of a 

previous slope-area determination of peak flow; minimum daily, 25 cfs Jan. 17; minimum 

gage height, 6.99 ft Aug. 25, Sept. 4, 7, 14, present site, 2.21 ft Oct. 1-3, 5-8, old 

site.

1904-6, 1910-11, 1928-57: Maximum discharge observed, 1,180 cfs Apr. 15, 1904 (gage 

height, 4.3 ft, site and datum then in use); minimum observed, 16 cfs Jan. 5, 1937.

Remarks. Records good except those for periods of ice effect or indefinite stagedischarge relation, which are poor. Several diversions for irrigation and domestic use. 

No regulation.

Cooperation. Gage-height record furnished by the Washington Water Power Co. 

Revisions (water years) . WSP 1217; Drainage area. WSP 1317: 1931 (M), 1935(M).

Rating tables, water year 1956-57, except periods of ice effect or indefinite stage-discharge 

relation (gage height, in feet, and discharge, in cubic feet per second)

2.1 

2.4 

2.7

Oct. 1 to May 8

3.0 

3.3 

3.6

58

112

210

390

640

-7.0 

7.2 

7.5

May 9 to Sept. 30

8.0 

8.5 

9.0

200

340

520

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

TotaJ

Mean

Ac-ft

Oct.

39

39

39

40

40

40

40

40

40

42

43

41

40

40

40

40

41

43

42

42

42

41

*41

42

42

43

45

43

43

44

43

1,280

41.3

2,540

Nov.

43

43

42

42

42

45

47

45

43

45

45

45

45

43

43

43

50

47

42

44

44

44

43

43

43

42

42

41

41

41

1,308

43.6

2,590

Dec.

42

43

45

*45

44

43

43

43

43

51

72

61

66

61

58

57

54

57

56

55

54

51

51

47

47

47

46

46

45

45

47

1,565

50.5

3,100

Jan.

46

45

45

45

45

45

44

44

43

45

44

43

43

43

40

*27

25

26

27

30

34

36

37

38

39

40

40

40

40

40

40

1,219

39.3

2,420

Feb.

40

41

42

43

43

44

43

43

42

42

43

43

43

45

43

43

45

45

45

46

46

45

54

404

418

*383

302

178

2,694

96.2

5,340

Mar.

144

120

105

97

90

81

90

103

117

122

112

103

94

86

81

79

77

76

76

76

76

74

72

68

68

66

65

64

69

76

85

2,712

87.5

5,380

Apr.

90

85

83

83

86

103

99

94

88

86

86

90

92

99

141

128

120

112

103

103

99

97

94

92

*86

83

79

76

86

117

2,880

96.0

5,710

May

138

194

235

206

220

255

255

314

e600

eSOO

e440

e400

e450

e380

e320

6300

310

328

358

313

262

*230

208

193

175

166

157

153

147

142

154

8,483

274

16,830

June

157

T32

128

117

112

123

108

108

103

96

92

88

87

85

88

84

82

79

78

75

76

74

71

71

68

*68

68

65

63

63

2,709

90.3

5,370

July

63

63

63

63

59

58

58

56

55

55

55

55

53

55

55

54

53

51

50

50

50

50

53

*50

50

50

49

49

49

49

49

1,672

53.9

3,320

Aug.

48

47

45

45

45

51

48

48

45

44

44

43

43

42

40

40

40

40

39

39

39

51

39

38

37

38

38

*58

38

38

38

1,294

41.7

2,570

Sept.

37

36

36

35

35

36

35

35

35

54

35

35

55

54

54

54

54

55

55

55

55

55

54

54

*35

55

55

57

57

57

1,054

35.1

2,090

Calendar year 1956: Max 470 Min 35 Mean 103 Ac-ft 75,060

Water year 1956-57: Max 600 Min 25 Mean 79.1 Ac-ft 57,260

* Discharge measurement made on this day.

e Stage-discharge relation indefinite; discharge estimated on basis of weather records, observed 

gage height, and records for nearby stations.

Note. Stage-discharge relation affected by ice Nov. 27-30, Jan. 15 to Feb. 4.
CLEARWATER RIVER BASIN 235 

Selway River near Lowell, Idaho

Location.--tot 46°05' , long 115°31' , in NE£ sec. 25, T. 32 N., R. 7 E., on right bank a 

quarter of a mile upstream from O'Hara Creek and 7 miles upstream from Lowell.

Drainage area. 1,910 sq mi, approximately.

Records available. April 1911 to September 1912 (gage heights or fragmentary discharge 

records only), October 1929 to September 1957. Monthly discharge for some periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 1,540 ft (from river-profile map). 

Apr. 11 to Sept. 2, 1911, staff gage at site 2 miles downstream at different datum. 

Feb. 7 to Sept. 22, 1912, and Oct. 14, 1929, to Nov. 19, 1930, staff or chain gages at 

nearby sites at different datum.

Average discharge.--28 years (1929-57), 3,642 cfs (2,637,000 acre-ft per year).

Extremes. Maximum discharge during year, 26,500 cfs June 3 (gage height, 11.30 ft); minimum daily, 350 cfs Jan. 18.

1929-57: Maximum discharge, 48,900 cfs May 29, 1948 (gage height, 16.04 ft); minimum, probably less than 100 cfs Jan. 8, 1937, during period of ice effect.

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

diversions from headwaters.

Revisions. WSP 1043: Drainage area.

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.6

3.0 

3.5 

4.0

430

730

1,210

1,810

4.5 

5.0 

6.0 

7.0

2,580

3,510

5,870

8,770

9.0

11.0

13.0

16,100

25,000

34,700

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

766 

698

*650

628

612

598

590

582

575

6T2

690

847

1.050

910

802

739

722

730

847

856

811

829

802

820

802

892

1,000

930

829

820

910

23,949

773

0.405

0.47

47,500

Nov.

847 

766

766

757

757

1,160

1,340

1,100

990

980

1,020

1,080

1,440

1,360

1,100

*1,060

1,330

1,300

950

766

1,020

1,130

1,000

900

850

800

750

700

700

750

29,469

982

0.514

0.57

58,450

Dec.

760 

950

1,200

1,100

1,000

910

829

748

865

1,160

1,620

1,560

2,300

2,650

2,070

*1,980

1,890

1,760

1,650

1,500

1,410

1,340

1,260

1,230

1,160

970

865

840

830

900

1,130

40,437

1,304

0.683

0.79

80,210

Jan.

1,100 

1,000

950

940

820

800

850

880

850

840

850

950

*900

870

840

550

400

350

450

700

850

850

850

850

760

660

550

600

650

740

780

24,030

775

0.406

0.47

47,660

Feb.

820 

850

800

780

800

800

750

750

740

760

720

750

750

800

850

850

850

850

850

850

820

800

800

1,400

2,300

3,300

4.470

3,680

-

33,540

1,198

0.627

0.65

66,530

Mar.

3,060 

2,770

2,600

2,380

2,240

2,080

*2,310

2,800

2,910

2,970

2,750

2,510

2,300

2,070

1,960

1,920

1,960

1,950

2,020

2,190

2,410

2,410

2,280

2,180

2,130

2,080

2,010

2,020

2,310

2,750

3, .100

73,430

2,369

1.24

1.43

145,600

Apr.

3,200 

3,040

3,020

2,930

3,550

4,500

4,310

*3,950

3,820

3,970

4,170

4,380

4,680

4,900

5,200

4,900

4,780

4,590

4,850

5,180

5,710

5,770

6,060

5,820

5,280

4,750

4,430

4,610

6,300

9,7_70

142,420

4,747

2.49

2.77

282,500

May

12,600

16^700

16,700

18,600

* 20, 300

20,200

21,400

23,800

21 , 200

21,100

21,100

21,300

20,500

19,500

19,200

18,800

19,100

21,800

25, 900

19,400

17,000

"15,200

14,300

13,600

14,400

16,000

17,900

19,900

20,900

22,200

583,300

18,820

9.85

11.36

*1,157

June

22,900 

23,600

24,600

23, 600

22,800

22,500

17,900

17,400

17,600

14,100

12,500

13,300

12,300

10,600

9,410

8,650

8,000

7,970

8,060

8,180

7,910

*7,090

6,470

6,630

6,630

6,060

6,690

6,550

5,950

5^510

371,460

12,380

6.48

7.23

736,800

July

5.050 

4,680

4,800

4,220

3,820

3,660

3,430

3,220

3,010

2,840

2,720

2,580

*2,480

2,380

2,180

2,060

1,940

1,840

1,760

1,720

1,640

1,640

1,620

1,490

1,410

1,390

1,320

1,260

1,220

1,180

1,120

75,680

2,441

1.28

1.47

150,100

Aug.

1,080 

1,050

1,020

990

960

1,040

1,180

1,040

950

901

865

838

820

784

766

739

714

698

682

658

*642

635

642

628

598

590

575

582

628

698

714

24,707

797

0.417

0.48

49,010

Sept.

714 

666

620

590

560

538

522

508

493

500

500

493

486

479

465

458

451

*522

714

635

568

545

522

500

486

472

458

444

437

437

15,783

526

0.275

0.31

31,310

Calendar year 1955: Max 37,800 Mln 552 Mean 4,547 Cfsm 2.38 In. 32.40 Ac-ft 3,300,000

Water year 1956-57: Max 24,600 Mln 350 Mean 3,940 Cfsm 2.06 In. 28.00 Ac-ft 2,853,000

Peak discharge (base, 18,000 cfs). --May 9 (3:30 a.m.

26,200 cfs (11.20 ft); June 3 (2 a.m.) 26,500 cfs

25,300 cfs (11.01 ft); May 20 (4 a.m.)

11.30 ft) .

* Discharge measurement made on this day.

* Expressed In thousands.

Note. Stage-discharge relation affected by Ice Nov. 24 to Dee. 5, Dec. 28 to Feb. 26.
236 CLEARWATER RIVER BASIN

Warm Springs Creek near Powell ranger station, Idaho

Location. Lat 46°29', long 114°53', in sec. 7, T. 36 N. , R. 13 E. (unsurveyed), on right 

bank an eighth of a mile upstream from mouth and pack bridge across Lochsa River and 

8j miles southwest of Powell ranger station.

Drainage area. 74.7 sq mi.

Records available. October 1956 to September 1957.

Gage. Water-stage recorder.

Extremes. Maximum discharge during year, 1,460 cfs June 2 (gage height, 4.26 ft); minimum, 8.2 cfs Nov. 19 (gage height, 0.74 ft).

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

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, In cubic feet per second)

0.8 9.

1.0 21

1.3 46

1.6 85

134

203

337

3.0 

3.5 

4.3

520

84O

1,500

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

23

21

18

16

15

15

14

T4

14

15

16

20

26

23

20

18

17

18

25

23

22

23

21

23

23

23

25

30

27

27

28

643

20.7

0.277

0.32

1,280

Nov.

28

26

25

25

*25

40

39

32

29

30

33

34

51

37

28

37

39

32

14

30

35

29

27

26

25

24

23

22

22

22

889

29.6

0.396

0.44

1,760

Dec.

22

23

28

*30

26

24

26

24

26

38

41

36

56

50

46

51

45

44

42

39

39

36

35

35

31

31

32

30

31

32

32

1,081

34.9

0.467

0.54

2,140

Jan.

30

29

29

28

26

28

28

26

27

25

26

26

25

25

22

19

23

23

23

23

22

22

*22

22

20

20

20

20

20

20

20

739

23.8

0.319

0.37

1,470

Feb.

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

22

36

45

49

56

53

701

25.0

0.335

0.35

1,390

Mar.

50

50

48

46

44

43

46

49

50

51

50

49

46

45

45

44

43

41

41

44

46

45

44

43

43

41

40

41

45

50

52

1,415

45.6

0.610

0.70

2,810

Apr.

52

52

53

52

61

66

63

61

61

66

70

72

*75

90

105

98

98

96

106

114

129

134

148

140

130

120

116

132

195

299

3,054

102

1.37

1.52

6,060

May

400

494

542

617

694

777

805

892

938

*892

938

952

982

1,010

990

982

998

1,050

1,210

1,150

960

870

812

756

742

798

885

1,020

1,090

1,170

L,_240

27,656

892

11.9

13.77

54,850

June

1,250

1,320

1.550

1,290

1,240

1,220

*1,030

1,060

1,020

826

742

763

654

605

553

500

474

469

455

450

451

404

362

362

337

326

353

310

288

2 66

20,692

690

9.24

10.30

41,040

July

248

229

264

220

200

185

172

161

150

140

130

123

121

114

*108

100

94

88

84

79

75

74

70

64

63

61

57

55

56

52

50

3,687

119

1.59

1.84

7,310

Aug.

46

45

44

42

40

56

49

42

39

37

36

35

34

33

31

30

*29

28

28

27

26

26

26

23

22_

22

22

22

22

24

29

1,015

32.7

O.438

0.51

2,010

Sept.

25

22

20

19

18

18

16

16

16

16

15

14

14

14

13

12

12

14

16

15

14

*13

12

12

12

11

TT

11

11

11

443

14.8

0.198

0.22

879

Calendar year 1956= Max - Min - Mean - Cfsm - In. - Ac-ft -

Water year 1956-57: Max 1,330 Mln 11 Mean 170 Cfsm 2.28 In. 30.88 Ac-ft 123,000

Peak discharge (base, 800 cfs).--May 19 (9:30 p.m.) 1,330 cfs (4.10 ft); June 2 (7 to 8 p.m.) 

1,460 cfs (4.26 ft).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 1 to Nov. 3; discharge estimated on basis of records for Lochsa 

River near Lowell and other nearby streams.
CLEARWATER RIVER BASIN 231 

Lochsa River near Lowell, Idaho

Location. Lat 46°09' , long 115°35' , in SW£SE£ sec. 33, T. 33 N. , R. 7 E. , on right bank 

0.7 mile upstream from Lowell, 0.9 mile upstream from mouth, 1.2 miles downstream from 

Pete King Creek, and 19 miles east of Kooskia.

Drainage area. 1,180 sq mi, approximately.

Records available.--October 1910 to September 1912, October 1929 to September 1957. 

Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 1,452.98 ft above mean sea level, unadjusted. Prior to Nov. 21, 1930, staff gage at site 1 mile upstream at different datum.

Average discharge.--30 years (1910-12, 1929-57), 2,764 cfs (2,001,000 acre-ft per year).

Extremes.--Maximum discharge during year, 21,100 cfs May 20 (gage height, 10.29 ft); minimum, 320 cfs Sept. 28, 29, 30 (gage height, 1.67 ft), but may have been less during 

period of ice effect.

1929-57: Maximum discharge, 34,800 cfs June 10, 1933 (gage height, 13.44 ft), from 

rating curve extended above 25,000 cfs; minimum, probably less than 100 cfs Jan. 8, 

1937, during period of ice effect.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are good.

Rating table, wats 

height, In 1

r year 1956-57, except periods of ice effect (gage 

eetj and discharge, in cubic feet per second)

1.7 

2.0 

2.5

3.0

320

515

940

1,500

3.5 

4.0 

5.0

2,170

2,960

4,890

6.0 

8.0 

10.0

7,170

12,900

20,000

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

687

575

*494

459

438

426

412

406

400

419

466

638

773

670

575

530

501

538

738

670

638

670

614

654

654

670

800

750

660

650

730

18,305

590

0.500

0.58

36,310

Nov.

700

650

650

650

650

850

1,200

1,000

950

950

960

1,000

1 . 500

1 , 400

1,000

*940

1,280

1,190

818

755

854

940

827

764

712

696

660

610

610

650

26,416

881

0.747

0.83

52,400

Dec.

660

870

1,050

950

870

800

700

650

740

1,000

,400

,350

,100

,400

,100

* ,070

,030

,800

,700

,500

,400

,350

,250

1,200

1,100

900

830

810

800

860

1,100

38 , 340

1,237

1.05

1.21

76,050

Jan.

1,000

900

860

820

720

700

740

760

730

700

720

780

*746

730

687

487

400

350

450

600

750

750

750

750

600

550

470

500

550

640

700

20,890

674

0.571

0.66

41 , 430

Feb.

720

720

7OO

680

690

700

680

680

680

700

680

700

700

720

740

740

740

740

740

730

710

704

721

1,000

1,600

2,500

5,060

2, 650

-

27,125

969

0.821

0.85

53,800

Mar.

2,340

2,160

2,070

1,930

1,760

*1.600

1,890

2,200

2,300

2,360

2,170

2,000

1,850

1,700

1,620

1,620

1,710

1,700

1,760

1,890

2,090

2,020

1,880

1,800

1,790

1,760

1,700

1,750

2,100

2,550

2,790

60,860

1,963

1.66

1.92

120,700

Apr.

2,790

2,680

2,710

2,660

3,780

4,720

4,210

*3,700

3,530

3,660

3,830

3,890

3,930

4,230

4,550

4,250

4,150

3,990

4,190

4,450

4,930

5,020

5,230

5,140

4,680

4,210

3,970

4,210

5,630

8,260

127,180

4,239

3.59

4.01

252 , 300

May

10,700

12.4OO

13,300

13,100

14,900

*16,200

16,200

16,800

18,100

16,000

16,200

16,400

16,900

16,100

15,300

15,100

14,700

15,100

17,100

19,600

15,800

13,900

*12,500

11,700

11,000

11,600

12,400

13,500

14,700

15,300

16,200

458,800

14,800

12.5

14.46

910,000

June

16,800

17,300

17,600

1 6 6OO

15,400

16,300

12,800

12,300

13,000

10,200

8,750

8,970

8,410

7,640

6,880

6,500

6,040

5,740

5,630

5,450

5,210

*4,810

4,430

4,450

4,43O

4,090

4,530

4,450

3,930

3,620

262,260

8,742

7.41

8.27

520,200

July

5,560

3,130

3,290

3,170

2,740

2,580

2,440

2,290

2,130

2,020

1,930

1,840

*1,770

1,730

1,630

1,530

1,430

1,360

1,300

1,250

1,180

1,160

1,140

1,070

1,020

990

940

902

874

854

827

53,877

1,738

1.47

1.70

106,900

Aug.

791

764

738

712

696

809

902

791

721

678

646

622

598

582

560

552

530

515

501

487

*473

459

452

445

438

432

426

445

452

459

508

18,184

587

0.497

0.57

36,070

Sept.

508

494

459

432

412

400

386

380

374

374

374

368

362

356

350

344

338

*419

480

438

412

400

386

374

362

350

338

326

320

320

11,636

388

0.329

0.37

23,080

Calendar year 1956: Max £6,400 Min 374 Mean 3,466 Cfam E.94 In. 40.00 Ac-ft 2,516,000

Water year 1956-57: Max 19,600 Min 320 Mean 3,079 Cfsm 2.61 In. 35.43 Ac-ft 2,229,000

Peak discharge (base, 12,000 cfs).--May 9 (3 to 4 a.m.) 19,200 cfs (9.79 ft); May 20 (7 a.m.)

21,100 cfs (10.29 ft); June 3 (3 a.m.) 18,900 cfs (9.73 ft). ________

* Discharge measurement made on this day.

Note.--No gage-height record Oct. 27 to Nov. 15, Nov. 27 to Dec. 15, Dec. 18 to Jan. 12. Discharge 

estimated on basis of recorded range in stage, weather records, records for Selway River, and other 

nearby streams. Stage-discharge relation affected by ice Jan. 17 to Feb. 21, Feb. 24-26.
238 CLEARWATER RIVER BASIN

South Pork Clearwater River near Elk City, Idaho

Location. Lat 45°49', long 115°32', in NE£ sec. 25, T. 29 N., R. 7 E., on right bank Just 

upstream from bridge on road to Orogrande, 0.2 mile upstream from Crooked River and 

4£ miles west of Elk City.

Drainage area. 261 sq mi.

Records available.--September 1944 to September 1957.

Gage. Water-stage recorder. Datum of gage is 3,816.27 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to June 23, 1949, wire-weight gage at 

site 24 ft downstream and at datum 6.14 ft lower.

Average discharge. 13 years, 260 cfs (188,200 acre-ft per year).

Extremes. Maximum discharge during year, 2,120 cfs May 21 (gage height, 5.85 ft); minimum, 

26 cfs Sept. 17, 18 (gage height, 1.41 ft).

1944-57: Maximum discharge observed, 3,700 cfs May 29, 1948 (gage height, 13.06 ft, 

site and datum then in use); minimum daily, 10 cfs Nov. 28, 29, 1952.

Remarks.--Records good except those for period of ice effect, which are fair. No regulation or diversion above station except for mining operations.

Rating table, water year 1956-57, except period of ice effect (gage height,

in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Mar. 25 to Apr. 18, May 29 to June 27)

1.4 

1.6 

1.8 

2.0

2.4 

2.8 

3.2 

3.6

190

304

444

640

4.0 

4.5 

5.0

870

1,190

1,540

2,140

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-It

Oct.

46

39

36

*34

34

34

33

33

32

49

58

85

142

85

59

53

50

48

62

59

54

52

50

57

56

61

89

75

64

62

68

1,759

56.7

0.217

0.25

3,490

Nov.

47

57

53

59

54

144

185

TT4

91

*89

92

91

134

106

82

96

100

85

72

60

70

76

72

64

56

51

48

46

47

51

2,392

79.7

0.305

0.34

4,740

Dec.

50

65

78

82

64

68

60

62

66

70

90

120

140

150

130

120

110

1O3

96

90

87

84

82

80

75

67

62

62

62

62

75

2,612

84.3

0.323

0.37

5,180

Jan.

74

72

70

60

56

58

58

58

60

58

*62

66

64

63

62

47

38

30

35

43

50

64

66

66

56

49

42

42

48

53

56

1,726

55.7

0.213

0.25

3,420

Feb.

58

60

60

60

60

58

58

58

58

58

56

56

58

63

70

70

70

80

75

70

65

65

65

85

115

150

185

185

-

2,171

77.5

0.297

0.31

4,310

Mar.

180

180

170

*160

150

150

170

210

220

220

200

190

170

160

160

160

170

190

200

210

250

230

£20

210

225

217

214

225

260

348

6,351

205

0.785

0.90

12,600

Apr.

338

323

345

332

545

678

502

484

*540

618

624

678

822

852

864

774

768

762

786

786

792

780

780

750

668

602

565

618

834

1,120

19,930

664

2.54

2.84

39,530

May

1,270

1,420

1,580

1,500

1,510

1,550

*1,520

1,490

1,680

1,600

1,520

1,500

1,710

1,640

1,580

1,550

1,480

1,390

1,600

1,960

2,030

*1,930

1,780

1,590

1,410

1,280

1,180

1,140

1,070

976

912

46,348

1,495

5.73

6.60

91,930

June

846

768

695

624

550

612

521

555

629

457

397

416

404

416

412

375

338

304

289

348

338

292

*262

245

231

223

239

217

201

190

12,394

413

1.58

1.77

24,580

July

182

174

225

190

172

162

152

146

142

132

128

*123

123

137

116

108

100

100

96

94

89

91

91

82

76

80

73

70

67

64

Ji

3,646

118

0.452

0.52

7,230

Aug.

59

58

56

52

52

59

85

67

59

56

52

49

48

46

45

44

41

39

39

38

37

36

*37

34

34

34

34

34

42 

57

48

1,471

47.5

0.182

0.21

2,920

Sept.

50

44

39

37

35

33

32

31

30

31

32

31

30

29

28

28

*27

33

65

48

41

36

34

32

31

30

31

31

29 

29

1,037

34.6

0.133

0.15

2,060

Calendar year 1956: Max 2,100 Min 31 Mean 293 Cfsm 1.12 In. 15.27 Ac-ft 212,700

Water year 1956-57: Max 2,030 Min 27 Mean 379 Cfsm 1.07 In. 14.51 Ac-ft 202,000

ak discharge (base, 1,300 cfs).--May 21 (3 to 4 a.m.) 2,120 cfs (5.85 ft).

- Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Nc 19 to Mar. 24.
CLEARWATER RIVER BASIN 239

South Fork: Clearwater River near Grangeville, Idaho

Location. Lat 45°55' , long 116°01', In SE^NWv sec. 30, T. 30 N. , R. 4 E. , on right bank 

Just downstream from powerhouse of Washington Water Power Co., 6 miles east of 

Grangevllle.

Drainage area. 865 sq mi.

Records available. November 1910 to January 1911, March 1911 to July 1911, October 1911 to 

September 1916, April 1923 to September 1957. Monthly discharge only for some periods, 

published In WSP 1317.

. , , . , , . 

Apr. 1, 1923, to Oct. 15, 1944, chain or staff gages at present datum.

Average discharge .--39 years (1911-16, 1923-57), 867 cfs (627,700 acre-ft per year).

Extremes. Maximum discharge during year, 8,910 cfs May 20 (gage height, 10.09 ft); minimum, 41 cfs Sept. 6 (gage height, 2.20 ft); minimum daily, 110 cfs Jan. 18.

1910-16, 1923-57: Maximum discharge observed, 12,600 cfs May 29, 1948 (gage height, 

12.50 ft); no flow part of day Aug. 27, 1947, Aug. 15, 1956; minimum daily, 29 cfs 

Nov. 23, 27, 29, 1952.

Remarks . Records excellent except those below 200 cfs, which are good, and those for 

periods of ice effect, which are fair. Diurnal fluctuation at low stages caused by 

powerplant just above station. No diversion for irrigation.

Cooperation. Water-stage recorder inspected by employees of Washington Water Power Co. in 

connection with a Federal Power Commission project.

Revisions. WSP 633: Drainage area.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.6 

3.0 

3.5 

4.0

108

219

430

685

4.5 

5.0 

6.0 

7.0

990

1,370

2,350

3,600

8.0 

9.0 

10.0

5,140

6,880

8,740

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

193 

174

160 

154

149

147

147

144

147

166

212

300

455

33T

248

226

199

216

318

267

244

241

223

230

223

241

318

304

251

255

279

7,162

231

0.267

0.31

14,210

Nov.

226 

230

230 

230

226

555

680

455

367

*354

367

354

485

460

313

340

367

349

287

230

291

313

287

271

240

209

186

174

m

196

9,441

315

O.364

0.41

18,730

Dec.

189 

24T

300 

313

248

263

230

240

250

263

349

500

535

555

490

445

*408

390

372

336

326

308

308

304

283

250

230

225

240

240

283

9,914

320

0.370

0.43

19,660

Jan.

279 2-75

267 

220

210

210

220

220

230

220

248

*255

244

237

237

20O

140

130" 110

160

230

250

250

250

220

190

160

160

180

200

210

6,612

213

0.246

0.28

13,110

Feb.

220 

230

230 

230

230

220

220

220

220

220

210

212

220

230

267

267

259

300

271

251

240

241

241

287

450

595

680

£74

8,135

291

0.336

0.35

16,140

Mar.

641 

630

*595 

555

510

505 555"

702

782

782

718

690

620

545

560

570

620

668

696

746

848

770

712

696

729

724

680

685

752

1,040

1,160

21,481

693

0.801

0.92

42,610

Apr.

1,190 

1,090

1,150 

1,090

1,480

2,100

1,710

1,550

*1,520

1,660

1,700

1,810

2,050

2,180

2,330

2,070

2,030

1,980

2,050

2,010

2,070

2,100

2,100

2,050

1,850

1,680

1,600

1,700

2,230

5,050

55,160

1,839

2.13

2.37

109,400

May

5,490 

3,900

5,260 

4,840

4,850

4,930

*4,900

5,010

5,970

5,650

5,290

5,380

6,570

6,480

6,160

6,160

5,920

5,580

6,340

8,650

8,470

*7,470

6,66O

5,920

5,290

4,930

4,63-

4,580

4,470

4,320

4,200

172,250

5,556

6.42

7.41

341,700

June

4,100 

4,060

3,940 

3,680

3,530

3,950

3,310

3,320

3,660

2,870

2,560

2,670

2,460

2,430

2,390

2,240

2,030

1,860

1,780

1,870

1,820

1,670

*1,500

1,390

1.3OO

1,240

1,320

1,190

1,100

1,020

72,260

2,409

2.78

3.11

143,300

July

955 

908

1,050 

927

824

764

724

674

646

625

595

570

*550

560

520

495

480

455

440

426

394

408

403

380

354

344

340

322

313

300

283

17,029

549

0.635

0.73

33,780

Aug.

275 

267

263 

251

248

291

361

304

267

251

237

230

226

216

209

202

196

193

186

183

177

*169

169

169

163

157

154 163"

180

226

251

6,840

221

0.255

0.29

13,570

Sept.

216 

199

172 

163

152

141

141

139

136

136

136

134

131

126

124

122

*120

T5T

223

20TT

177

160

149

141

134

131

126

124

129

124

4,469

149

0.172

0.19

8,860

Calendar year 1956: Max 6,520 Mln 141 Mean 1,099 Cfsm 1.27 In. 17.30 Ac-ft 797,500

Water year 1956-57= Max 8,630 Min 110 Mean 1,071 Cfam 1.24 In. 16.80 Ac-ft 775, 1OO

Peak discharge (base, 3,200 cfs).--May 20 (2 p.m.) 8,910 cfs (1O.09 ft); June 8 (10 p.m.) 4.64O cfs 

(7.69 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 25, Dec. 

Feb. 11, Feb. 13, 21.

3, 9, 26-30, Jan. 4-10, Jan. 16 to
240 CLEARWATER RIVER BASIN

Clearwater River at Kamiah, Idaho

Location.--Lat 46°14', loag 116°01', in sec. I, T. 33 N., R. 3 E., on left bank a quarter 

of a mile downstream from highway bridge at Kamiah, three-quarters of a mile downstream 

from Lawyer Creek, and 6 miles downstream from South Fork.

Drainage area. 4.850 sq nil, approximately. 

Records available . August 1910 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 1,162.52 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. Prior to Oct. 2, 1934, staff or chain gages at 

site 300 ft downstream at same datum.

Average discharge. 47 years, 8,139 cfs (5,892,000 acre-ft per year).

Extremes.--Maximum discharge during year, 71,200 cfs May 20 (gage height, 15.85 ft); minimum, 619 cfs Jan. 17 (gage height, 2.77 ft).

1910-57: Maximum discharge, 99,000 cfs May 29, 1948 (gage height, 19.22 ft); minimum, 179 cfs about Dec. 1, 1952 (gage height, 1.98 ft).

Remarks. Records excellent except those below 5,000 cfs, which are good, and those for 

periods of doubtful or- no gage-height record, which are fair. Some diurnal regulation 

at low stages caused by powerplant on South Pork.

Rating table, water year 1956-57 (gage height, In feet,

and discharge, In cubic feet per second) 

(Shifting-control method used June 11 to July 23)

2.9 

3.2 

3.6 

4.0 

4.5

720

1,000

1,460

2,000

2,820

5.0 3,820

6.0 6,390

7.0 9,760

8.0 13,600

9.0 18,100

11.0 30,400

13.0 45,900

16.0 72,500

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Itotal

Mean

Cfstn

In.

Ac-ft

Oct.

1,760 

*1,630

1,460

1,350

1,300

1,270

1,240

1,230 

1,210 

1,230

1,400

1,640

2,370

2,210 

1,830

1,630

1,550

1,540

1,940

1,960

1,800

1,850

1,790

1,800

1,820

1,900

2.590 

2,370

2,030 

1,900

2,150

53,550

1,727

0.356

0.41

106,200

Nov.

2,060 

1,820

1,710

1,710

1,680

2,380

3,650

2,950 

2,440 

2,290

2,330

2,490

3,200

5,740 

*2,820

2,520

2,840

3,260

2,560

1,920

2,080

2,490

2,390

2,150

1,960

1,800

1,710 

1,640

1,520 

1,520

69,630

2,321

0.479

0.53

138,100

Dec.

1,640 

1,710

2,230

2,560

2,280

1,930

1,720

1,540 

1,680 

2,310

3,630

4,430

5,060

6,700 

5,360

*5,150

4,920

4,450

4,250

3,840

3,550

3,260

3,070

2,970

2,820

2,520

2,200 

2,140

2,100

2,090 

2,450

96,560

3,115

0.642

0.74

191,500

Jan.

2,640 

2,450

2,340

2,260

2,020

1,920

1,970

1,990 

2,020 

1,860

1,940

*2,040

2,120

2,040 

1,970

1,470

828

783

1,337

1,640

1,930

2,000

1,990

1,970

al,730

1,460

al,270 

al,350

al,450

al,600 

al,970

56,051

1,808

0.373

0.43

111,200

Feb.

2,000 

2,020

1,920

1,890

1,920

1,920

1,870

1,850 

1,870 

1,920

1,890

1,930

1,930

2,020 

2,150

2,170

2,150

2,180

2,200

2,170

2,090

2,030

2,030

a3,160

a5,000

a9,000

al2,000 

a 10, 000

-

-----

85,280

3,046

0.628

0.65

169,200

Mar.

a9 , 000 

a7,500

a6,500

a6,000

a5, 500

a5,200

*6,S40

7,930 

8,480 

8,940

7,840

7,370

6,700

5,830 

5,410

5,250

6,640

6,330

6,060

6,300

7,280

7,080

6,510

6,090

6,030

5,970

5,580 

5,490

6,180

8, 580 

9,650

209,760

6,766

1.40

1.61

416,100

Apr.

10,300 

9,470

9,110

8,760

10,200

14,200

13,200

* 11, 700 

11,000 

11,100

11,400

11,800

12,500

12,900 

13 , 900

13,000

12,600

12,100

12,400

12,800

13,800

14,100

14,600

14,500

13,500

12,300

11,400 

11,500

14, 200

21,100

375,440

12,510

2.58

2.88

744,700

May

27,900 

32,800

38,300

36,900

40,200

*44,100

43 , 800

45,200 

53,400 

46,400

45,300

45,700

50,400

47,800 

44,800

43,400

42,500

42,300

48,300

66.900

53 , 400

44,600

*39,300

35,600

32,400

32,800

34,500 

37,600

40,900

42,600 

44,400

1,324,500

42,730

8.81

10.16

*2,627

June

46,100 

46,300

48,400

46,500

44,600

45,500

37,800

34,500 

38,300 

30,200

25,900

26,000

25,300

22,600 

20,000

18,600

17,200

16,400

*16,200

16,200

*15,900

14,700

13,400

13,200

13,400

12,400

12,900 

13,500

12,000

11,100

755,100

25,170

5.19

5.79

*1,498

July

10,300 

9,650

9,720

9,510

8,240

7,700

7,240

6,800 

6,330 

5,970

5,690

5,410

5,170

*5,070 

4,760

4,410

4,200

3,950

3,780

3,670

3,500

3,400

3,380

3,240

3,010

2,900

2,800 

2,660

2,560

2, 490 

2,590

159,900

5,158

1.06

1.23

317,200

Aug.

2,290 

2,170

2,120

2,060

1,970

2,080

2,560

2,390 

2,090 

1,960

1,870

1,790

1,750

1,690 

1,640

1,620

1,560

1,510

1,490

*1,440

1,410

1,390

1,360

1,560

1,330

1,300

1,290 

1,290

1,330

1,460 

1,560

53,130

1,714

0.353

0.41

105,400

Sept.

1,580 

1,520

1,410

1,330

1,270

1,220

1,190

1,160 

1,120

1,120

1,120

1,120

1,110

1,090 

1,070

1,060

1,030

*1,090

1,460

1,500

1,340

1,260

1,210

1,160

1,120

1,090

1,070 

1,040

1,020 

1,020

35,900

1,197

0.247

0.28

71,210

Calendar year 1956: Max 71,600 Win 1,180 Mean 9,815 Cfsm 2.02 In. 27.53 Ac-ft 7,125,000

Water year 1956-57: Max 66,900 Mln 783 Mean 8,972 Cfsm 1.85 In. 25.12 Ac-ft 6,496,000

Peak discharge (base, 18,000 cfs).--May 9 (2 p.m.) 55,800 cfs (14.14 ft); May 20 (9 a.m.) 71,200 cfs 

(15.85 ft); June 5 (5 a.m.) 51,700 cfs (15.64 ft).______________________________ _________

* Discharge measurement made on this day.

$ Expressed In thousands.

a Doubtful or no gage-height records discharge estimated on basis of partly estimated gage-height 

record, weather records, and records for station at Spaldlng and for Lochsa and Selway Rivers near 

Lowell.
CLEARWATER RIVER BASIN 241

North Pork Clearwater River at Bungalow ranger station, Idaho

Location. Lat 46°38' , long 115"30' , in sec. 18, T. 38 N., R. 8 E., on left bank at 

Bungalow ranger station, 300 ft downstream from mouth of Orogrande Creek, 1,000 ft 

downstream from highway bridge, and 17 miles northeast of Pierce.

Drainage area. 996 sq mi.

Records available. September 1944 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 2,240 ft (from river-profile map).

Average discharge. 13 years, 2,918 cfs (2,113,000 acre-ft per year).

Extremes.--Maximum discharge during year, 16,300 cfs May 20 (gage height, 8.18 ft); minimum daily, 375 cfs Jan. 18; minimum gage height, 2.57 ft Sept. 27, 28-30.

1944-57: Maximum discharge, 27,400 cfs May 29, 1948 (gage height, 11.13 ft); minimum daily, 180 cfs Nov. 29, 1952.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. No regulation or diversion above station.

Cooperation. Water-stage recorder inspected by U. S. Forest Service ranger at Bungalow 

ranger station.

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

2.3 355 3.5 1,680 5.O 5,070

2.6 570 4.0 2,610 6.0 8,220

3.0 980 4.5 3,720 8.0 15,60O

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsra

In.

Ac-ft

Oct.

903 

750 

*700 

680

670

651 

651

642

54?

670

740

848

1,020 

826

750

730

710

750 

1,000

815

826

881

793

815

826

881

1,000

914

826

88 1

24,661

796

0.799

0.92

48,910

Nov.

804 

793 

771 

760

760

1,130 

1,130

958

914

914

1,110

1,200

*1,980 

1,400

1,090

1,160

1,490

1,220 

800

950

1,100

1,050

914

820

800

750

720

700

680

680

29,548

985

0.989

1.10

58,610

Dec.

720 

750 

900 

1,100

1,000

750 

650

700

750

850

1,300

*1,320

1,700 

2,300

1,800

2,590

1,960

2,010 

1,940

1,630

1,520

1,360

1,260

1,230

1,100

892

969

940

900

950

1,050

38,691

1,248

1.25

1.44

76,740

Jan.

1,050 

1,000 

950 

900

860

840 

820

800

800

800

820

850

800 

770

750

600

450

375 

475

800

850

850

850

850

800

700

580

620

650

700

800

23,760

766

0.769

0.89

47,130

Feb.

850 

880 

830 

867

860

830 

830

840

870

870

840

870

900 

900

950

980

960

950 

950

900

880

880

950

1,100

1,700

2,500

5,500

3,180

-

32,410

1,158

1.16

1.21

64,280

Mar.

2,650 

2,280 

2,090 

1,890

1,710

1,580 

1,700

2,300

2,110

2,120

1,960

1,820

1,710 

1,540

1,500

1,460

1,480

1,440 

1,540

1,730

2,030

1,920

1,780

1,700

1,700

1,680

1,650

1,750

2,090

2,610

2, 860

58,380

1,883

1.89

2.18

115,800

Apr.

2,820 

2,690 

2,866 

2,820

3,620

4,420 

3,940

3,530

3,410

3,670

3,870

3,920

3,800 

4,200

4,560

*4,230

4,230

4,150 

4,450

4,670

5,070

5,220

5,450

5,220

4,640

4,200

4,070

4,500

5,990

8.590

128,610

4,287

4.30

4.80

255,100

May

10,200 

11,300 

11,200 

11,700

* 13, 100

13,400 

13,300

13 , 900

14,800

13,900

13,400

13,300

13,300 

12,800

12,500

12,300

12,000

11,900 

13 , 200

15,500

13,000

11,900

11,000

* 10, 400

10,000

10 , 200

10,500

10 , 700

11,000

11,300

11,700

378,500

12,210

12.3

14.13

750,700

June

11,700 

12,100 

11,700 

10,900

10,100

12,000 

9,760

8,830

8,830

7,480

6,770

6,580

6,050 

5,930

5,360

4,980

4,670

4,420 

4,260

*4,070

3,870

3,620

3,430

3,390

3,160

3,070

3,340

2,970

2,780

2,610

188,730

6,291

6.32

7.05

374,300

July

2,510 

2,410 

2,630 

2,350

2,180

2,090

1,990

1,900

1,820

1,760

1,700

1,630

1,600 

1,580

*1,570

1,490

1,430

1,380 

1,340

1,300

1,260

1,240

1,240

1,190

1,150

1,130

1,100

1,060

1,080

1,040

1,000

49,150

1,585

1.59

1.84

97,490

Aug.

969 

936 

925 

903

892

1,080 

1,050

936

881

870

848

837

815 

793

782

760

750

740 

*730

710

700

690

680

670

660

680" 651

750

740 

710

804

24,942

805

0.808

0.93

49,470

Sept.

690" 740 

670 

651

642

624 

615

624

615

615

606

606

597 

588

579

579

570

700 

*700

615

606

588

579

570

562

554

546

538

53F

538

18,245

608

0.610

0.68

36,190

Calendar year 1956: Max 21,200 Mln 642 Mean 3,359 Cfsra 3.37 In. 45.91 Ac-ft 2,439,000

Water Water year year 1956-57: 1956-57: Max Max 15,300 15,300 Mln Mln 375 375 Mean Mean 2,728 2,728 Cfsra Cfsra 2.74 2.74 In. In. 37.17 37.17 Ac-ft Ac-ft 1,975,000 1

Peak discharge (base, 9,000 cfs).--May 8 (11 p.m.) 15,900 cfs (8.08 ft); May 20 (6:30 a.m.) 

16,500 cfs (8.18 ft); June 6 (5 p.m.) 14,309 cfs (7.64 ft).________________________ 

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by Ice Nov. 19-21, Nov. 24 to Dec. 15, Dec. 28 to Feb. 27

(no gage-height record Jan. 17 to Feb. 15j discharge estimated on basis of weather records, records

for station at Ahsahka, and other Clearwater River tributaries).
242 CLEARWATER RIVER BASIN

North Pork Clearwater River near Ahsahka, Idaho

Location. Lat 46°31', long 116"18' , in SE£ sec. 26, T. 37 N., R. 1 E., on right bank at 

Bruce's Eddy, li miles northeast of Ahsahka and 2 miles upstream from mouth.

Drainage area. 2,440 sq mi, approximately. 

Records available. August 1926 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 969.82 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Oct. 29, 1930, staff gage at site 

300 ft upstream at different datum.

Average discharge.--31 years, 5,646 cfs (4,088,000 acre-ft per year).

Extremes.--Maximum discharge during year, 40,600 cfs May 20 (gage height, 21.47 ft); minimum daily, 750 cfs Jan. 18.

1926-57: Maximum discharge, 100,000 cfs Dec. 23, 1933 (gage height, 35.5 ft, from 

floodmarks), from rating curve extended above 24,000 cfs by logarithmic plotting; minimum, probably less than 250 cfs Jan. 8, 1937, during period of ice effect.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair.

Rating table, water year 1956-57, except period of Ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Sept. 17-30)

2.3 910

3.0 1,320

4.0 2,120

5.0 3,150

7.0 5,730

9.0 8,820

11.0 12,400

13.0 16,600

16.0 24,000

19.0 32,800

22.0 42,500

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

*2,100 

1,710

1,490

1,420

1,380

1,350

1,320 

1,310

1,500 

1,300

1,390

1,520

1,790

1,890

1,590

1,500

1,490

1,500

1,880

1,910

1,640

1,780

1,740

1,690

1,730

1,850

2,070

2,260

1,940

1,830 

2,150

51,820

1,672

0.685

0.79

102,800

Nov.

1,940 

1,730

1,660

1,620

1,570

al,700

a2,400 

a2,500

a2,200 

a2,000

a2,100

a2,300

a2,500

*5.790

2,700

2,350

2,690

3,120

2,240

1,760

2,060

2,150

1,980

1,830

1,690

1,550

1,520

1,470

1.400

1,580

61,900

2,063

0.845

0.94

122,800

Dec.

1,450 

1,500

1,830

2,140

1,980

1,510

1,550 

1,350

1,500 

1,690

3,300

3,380

*4,140

6,720

5,170

5,800

5,910

5,270

5,760

4,880

4,230

3,690

3,280

3,080

2,880

2,600

2,240

2,180

2,120

2,060 

2,220

97,190

3,135

1.28

1.48

192,800

Jan.

2,460 

2,400

2,230

2,180

2,040

1,920

1,890 

1,880

1,800 

1,830

1,790

1,900

1,950

1,860

1,790

*1,200

900

750 *9"50~

1,600

2,100

2,100

2,100

2,100

1,900

1,700

1,400

1,500

1,600

1,700 

1,900

55,420

1,788

0.733

0.84

109,900

Feb.

2,100 

2,100

2,000

2,000

2,100

2,100

2,000 

2,000

2,000 

2,100

2,100

2,000

2,100

2,200

2,200

2,300

2,400

2,300

2,300

2,300

2,200

2,100

2,100

2,500

4,000

6,500

10.500

9,240

81,840

2,923

1.20

1.25

162,300

Calendar year 1956: Max 40,600 Mln 1,300

Mar.

7,790 

6,960

6,180

5,650

5,230

4,770

6,370 

*8,740

7,880 

7,820

6,940

6,240

5,790

5,140

4,770

4,680

4,920

5,040

5,210

5,720

6,660

6,440

5,740

5,340

5,280

5,510

5,230

5,390

6,430

8,650 

9 620 ? 

192,130

6,198

2.54

2.93

381,100

Apr.

10,400 

9,400

9,430

9,310

12,6(50

18,500

*15,600 

12,900

11,600 

11,600

11,900

11,900

11,800

13,000

15,700

13,400

12,500

11,800

12,100

12,000

12,800

13,100

13,700

13,200

12,100

10,900

10,100

10,400

12,900

18, 200

374,840

12,490

5.12

5.71

743,500

May

22,000 

24,600

24,000

*23,500

26,300

28,200

27,400 

27,500

20,000 

27,900

26,700

26,300

26,800

26,000

24,600

23,800

23,200

22,800

24,800

56,000

31,800

26,500

24,400

22,100

*20,400

19,900

20,200

20,400

20,700 

20,900

21,100

770,800

24,860

10.2

11.75

1,529,000

June

21,000 

21,300

21,400

19,900

18,400

20,000

19,900 

16,100

16,800 

14,300

12,700

12,100

11,300

11,100

10,300

9,420

8,970

8,460

8,070

7,850

*7,450

7,030

6,550

6,520

6,280

5,940

6,250

6,020

5,510 

"5,170

352,090

11,740

4.81

5.37

698,400

July

4.950 

4,750

4,760

4,790

4,340

4,120

3,920 

3,750

3,600 

3,480

3,380

3,240

3,150

3,200

*3,120

3,040

2,940

2,860

2,780

2,680

2,610

2,530

2,490

2,470

2,370

2,300

2,240

2,180

2,150 

2,130

2,110

98,410

3,175

1.30

1.50

195,200

Aug.

2,020 

1,960

1,940

1,920

1,850

1,820

2,210 

2,120

1,910 

1,800

1,760

1,730

1,710

1,650

1,610

1,570

1,540

*1,480

1,450

1,420

1,380

1,370

1,350

1,320

1,310

1,310

1,280

1,300

1,370 

1,370

1,330

50,160

1,618

0.663

0.76

99,490

Sept.

1.420 

1,350

1,280

1,250

1,220

1,210

1,180 

1,160

1,160 

1,160

1,150

1,150

1,140

1,110

1,090

1,090

1,080

1,080

*1,270

1,280

1,170

1,130

1,110

1,100

1,080

1,060

1,050

1,050

1,050 

1,040

34,670

1,156

0.474

0.53

68,770

Mean 7,339 Cfsm 3.01 In. 40.94 Ac-ft 5,328,000

Water year 1956-57: Max 36,000 Mln 750 Mean 6,086 Cfsm 2.49 In. 33.85 Ac-ft 4,406,000

Peak discharge (base, 18,000 cfs). --Apr. 6 (6:30 a.m.) 19,300 cfs (14.18 ft); May 9 (9 a.m.) 

31,600 cfs (18.61 ft); May 20 (3

(16.47 ft).

. .. 

(3 p.m.) 40,600 cfs (21.47 ft); June 6 (11:30 p.m.) 25,200 cfs

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, records for station at 

Bungalow, and other stations In Clearwater River basin.

Note. --Stage-discharge relation affected by ice Jan. 16 to Feb. 27 (no gage-height record 

Jan. 26-31).
CLEARWATER RIVER BASIN 243

Potlatch Creek at Kendrick, Idaho

Location.--Lat 46°37' , long 116°39', In NWij sec. 25, T. 38 N., R. 3 W., near center of main 

span on upstream side of Mill Street Bridge in Kendrick, 0.9 mile downstream from Bear 

Creek and 3.2 miles upstream from Middle Potlatch Creek.

Drainage area. 460 sq ml, approximately.

Records available. October 1945 to September 1957.

Gage. Wire-weight gage and crest-stage indicator; gage read once daily. Prior to Aug. 17, 

1957, wire-weight gage only. Datum of gage is 1,198.2 ft above mean sea level, unadjusted.

Average discharge. 12 years, 428 cfs (309,900 acre-ft per year).

Extremes.--Maximum discharge during year, 8,500 cfs May 20 (gage height, 10.8 ft, from 

graph based on gage readings); minimum observed, 9.0 cfs Sept. 11, 12; minimum gage 

height observed, 4.84 ft Oct. 9.

1945-57: Maximum discharge, 13,000 cfs Feb. 26, 1948 (gage height, 12.6 ft, from 

floodmarks), result of slope-area determination; minimum observed, 4.3 cfs Aug. 25, 

1946; minimum gage height observed, 3.28 ft Oct. 12-16, 1945.

Remarks. Records good above 1,000 cfs and fair below. No regulation or diversion. 

Revisions (water years). WSP 1093: 1946 (M).

Discharge-, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

*20

22

21

19

16

14

16

14

15

19

31

25

24

23

22

23

32

39

51

42

67

38

45

52

64

69

6?

64

56

65

1,089

35.1

0.076

0.09

2,160

Nov.

69

52

47

42

39

39

56 

51

48

45

50

51

60

74

*5S

52

70

69

65

65

56

45

50

27

26

25

24

23

21

1,418

47.3

0.103

0.11

2,810

Dec.

22

30

36

40

27

19

12 

14

18

45

198

278

572

*440

350

590

407

982 620"

360

355

243

215

202

202

182

160

150

130

135

140

7,174

231

0.502

0.58

14,230

Jan.

135

125

115

105

95

85

90 

85

80

75

70

60

50

45

40

35

*35~ 30

40

50

49

48

46

45

43

43

45

50

55

60

70

1,999

64.5

0.140

0.16

3,960

Feb.

65

"ffS 60

70

90

100

110 

115

120

125

131

128

128

128

145

125

110

100

90

90

85

85

160

312

1,280

2,700

2.850

2,140

_

11,707

418

0.909

0.95

23,220

Mar.

1,560

1,410

1,270

1,120

942

999

4.490 

*3,580

2,800

2,260

1,540

1,330

1,110

926

795

999

1,540

1,590

1,490

1,760

2,060

1,370

1,010

1,040

1,300

1,300

1,080

1,180

1,650

1,950 

2,120

49,571

1,599

3.48

4.01

98,320

Apr.

2,400

1,760

1,560

1,580

3,060

3,600

*2,820 

1,990

1,630

1,580

1,530

1,380

1,530

1,560

2,470

1,730

1,370

1,300

1,230

1,060

910

823

823

830

950

795

746

641

641

711

45,010

1,500

3.26

3.64

89,280

May

725

739

*669

614

536

488

500 

429

385

322

294

294

530

596

536

614

554

440

1,390

7.250

4,450

2,550

1,850

1,310

974

*732

590

494

412

350

299

31,916

1,030

2.24

2.58

63,300

June

258

254

236

202

163

278

286

182

163

134

125

119

112

119

114

104

89

*86

87

81

78

74

70

65

62

62

65

56

52

3,991

133

0.289

0.32

7,920

July

51

47

45

42

41

41

37 

34

34

33

33

31

29

29

32

*29

29

26

24

22

19

19

25

20

18

18

17

14

Tl- 12

is

876

28.3

0.062

0.07

1,740

Aug.

12

12

14

16

17

22

22

34

22

20

16

14

12

12

12

*12

12

13

11

10

10

11

10

9.9

12

10

9.9

9.6

12

12

12

433.4

14.0

0.030

0.04

860

Sept.

12

12

12

12

12

10

9.6 

9.6

9.6

9.6

9.0

sTo

9.3

9.3

9.3

9.6

9.6

9.6

*9.9

13.

11

11

10

10

10

10

10

10

12

12

312.0

10.4

0.023

0.03

619

Calendar year 1956: Max 5,500 Min 7.1 Mean 475 Cfsm 1.03 In. 14.04 Ac-ft 344,800

Water year 1956-57: Max 7,250 Min 9.0 Mean 426 Cfsm 0.926 In. 12.58 Ac-ft 308,400

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 25-30, Dec. 7-10, Dec. 27 to Feb. 10, 

Feb. 16.-22.
244 CLEARWATER RIVER BASIN

Clearwater River at Spalding, Idaho

Location. Lat 46°25', long 116°51', in lot 22, sec. 22, T. 36 N., fi. 4 W., on right bank 

a quarter of a mile downstream from Lapwai Creek, three-eighths of a mile northwest of 

Spalding Post Office, and 2,300 ft downstream from bridge on U. S. Highway 95.

Drainage area. 9,570 sq mi, approximately. 

Records available. March 1926 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 770.5 ft (estimated from datum of former 

gage). Prior to Sept. 21, 1928, staff gage at site 2,300 ft upstream at datum 772.49 ft 

above mean sea level (datum of 1929, supplementary adjustment of 1947). Wire-weight 

gage on hgihway bridge 2,300 ft upstream, at same datum as former staff gage, used as 

supplementary gage.

Average discharge.--31 years, 15,072 cfs (10,910,000 acre-ft per year).

Extremes. Maximum discharge during year, 143,000 cfs May 20 (gage height, 21.42 ft); minimum, 1,400 cfs Jan. 18 (gage height, 2.10 ft, backwater from ice).

1926-57: Maximum discharge, 177,000 cfs May 29, 1948 (gage height, 23.76 ft); maximum gage height, 25.6 ft Jan. 5, 1928 (present site and datum), from floodmark (ice 

jam); minimum daily discharge, 500 cfs Jan. 9, 1937, Dec. 1, 1952.

Remarks. Records excellent except those for period of ice effect, which are good. Small 

diversions from tributaries; slight diurnal fluctuation at times caused by powerplant on 

South Fork.

Rating table, water year 1956-57, except period of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

3.0 

4.0 

5.0

1,590

1,990

2,760

4,940

7,820

6.0

7.0

9.0

11.0

11,400 

15,700 

26,100 

39,OOO

13.0

15.0

18.0

21.0

54,500

72,000

102,000

138,000

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Ibtal

Mean

Cfsm

In.

Ac-ft

Oct.

*3,960 

3,830

3,290

3,000

2,830

2,760

2,690

2,640 

2,620

2,620

2,690

3,090

3,830

4,670 

3,980

3,440

3,270

3,250

3,610

4,350

3,910

3,740

3,940

3,760

3,850

4,070

4,620 

5,460

4,S'20

4,230 

4,570

113,390

3,658

0.382

0.44

224,900

Nov.

4,720 

4,160

3,830

3,650

3,580

3,720

6,260

6,380 

5,170

4,740

4,720

5,280

5,980

8,750 

*6,656

5,570

5,760

7,160

6,180

4,570

4,400

4,990

5,040

4,620

4,260

3,870

3,650 

3,500

3,350

5,170

147,880

4,929

0.515

0.57

293,300

Dec.

3,290 

3,390

3,910

4,890

5,040

4,120

3,500

3,070 

3,440

4,050

6,320

9,390

9,490

*15.000 

12,800

13,000

13,100

12,100

12,400

10,800

9,600

8,550

7,660

7,190

6,820

6,180

5,380 

4,990

4,820

4,720 

5.070

224,080

7,228

0.755

0.87

444,500

Jan.

5,700 

5,680

5,330

5,150

4,820

4,350

4,330

,280 

,310

,260

,140

,350

,570

,450 

,260

,300

* ,000

,6OO

,000

,200

,500

,500

,500

,500

,000

3,300

2,800 

3,000

3,200

3,700 

4,200

124,280

4,009

0.419

0.48

246,500

Feb.

,500 

,600

,400

,20O

,300

,300

,100

,106 

,200

,300

,400

,300

,400

,500 

,800

,900

,900

,900

,900

,800

,600

,400

,450

5,150

13,300

23,700

31,500 

27,400

-

-----

204,300

7,296

0.762

0.79

405,200

Mar.

22.3OO 

19,200

17,600

16,100

15,000

14,200

19,800

24,900 

23,900

23,800

20,300

18,300

16,600

14,800 

15. 500

13,500

15,300

16 , 400

15,700

16,500

18,800

17,700

16,000

14,800

14,800

15,300

14,400 

14,000

15,700

21,800 

24,800

545,800

17,610

1.84

2.12

$1,083

Apr.

28,000 

24,700

23,200

22,500

27,000

*41,200

37,000

31,000 

27,700

27,100

27,500

27,700

28,700

29,700 

35,000

31,300

29,000

27,900

27,500

27,500

28,700

29,800

30,600

30,500

29,300

26,300

24,000 

23,400

27,400

38, 200

869,400

28,980

3.03

3.38

*1,724

May

50,700 

59,300

64,300

*64,100

68,800

75,100

75,000

74,900 

85,200

80,600

75,300

74,900

79,800

80,100 

74,700

71,200

69,700

68,000

74,300

123,000

110,000

*83,900

73,600

65,300

*58,800

56,400

57,300 

59,500

62,600

64,800 

66,200

*£,247.4

72,500

7.58

8.73

*4,458

June

68,400 

67,900

70,900

68,100

64,300

64,900

62,800

50,900 

55,600

46,300

39,300

37,200

36,900

34,400 

31,100

28,900

27,100

25,400

*24,700

24,200

23,600

22,100

20,300

19,000

19,500

18,500

18,300 

19,600

17,700

16,500

tt.,124.4

37,480

3.92

4.37

*2,230

July

15,400 

14,600

14,200

14,700

13,100

12,100

11,500

10,800 

10,300

9,79O

9,310

8,920

8,620

8,510 

8,250

*7,790

7,320

7,000

6,700

6,460

6,260

6,010

5,950

5,840

5,570

5,300

5,170 

4,970

4,840

4,860 

4,670

264,810

8,542

0.893

1.03

525,200

Aug.

4,430 

4,230

4,140

4,070

3,980

3,980

4,620

4,940 

4,280

3,980

3,760

3,610

3,520

3,390 

3,330

3,230

*3,150

3,110

3,050

2,940

2,850

2,760

2,730

2,690

2,680

2,610

2.590 

2^590

2,710

2,760 

2,900

105,610

3,407

0.356

0.41

209,500

Sept.

5,040 

2,940

2,800

2,640

2,540

2,530

2,430

2,380 

2,380

2,360

2,380

2,360

2,340

2,280 

2,310

2,300

2,250

2,200

2,420

*2,960

2,730

2,510

2,420

2,360

2,310

2,260

2,240 

2,240

2,190

...'-..

73,280

2,443

0.255

0.28

145,300

Calendar year 1956: Max 112,000 Mln 2,620 Mean 19,150 Cfsm 2.00 In. 27.22 Ac-ft 13,900,000 

Water year 1956-57: Max 123,000 Mln 1,600 Mean 16,56O Cfsm 1.73 In. 25.47 Ae-ft 11.990,000

Peak discharge (base, 50,000 cfs). May 2O (6 p.m.) 143,000 cfs (21.42 ft).

* Expressed In thousands.

Note .--Stage-discharge relation affected by Ice Jan. 16 to Feb. 22 (no gage-height record 

Jan. 26-30) .
SNAKE RIVER MAIN STEM 245

Snake River near Clarkston, Wash.

Location. Lat 46°25'30", long 117°10'30", in lot 1, sec. 16, T. 11 N., R. 45 E., on right 

bank 2 miles upstream from Alpowa Creek, 7 miles downstream from Clarkston, and 

134 miles upstream from mouth.

Drainage area .--103 ,SQQ sq mi, approximately.

Records available. October 1915 to September 1957 in reports of Geological Survey.

Monthly discharge only for some periods, published in WSP 1317. October 1909 to September 1953 (monthly discharge only) in State Water-Supply Bulletin 6. Prior to October 1935, published as "at Riparia.'' Gage-height records collected at Riparia, 

1900-1916 (fragmentary), 1935-48, are contained in reports of U. S. Weather Bureau.

Gage. Water-stage recorder. Datum of gage is 670 ft above mean sea level (Corps of 

Engineers bench mark). Prior to Sept. 12, 1917, staff gage, and Sept. 12, 1917, to 

Sept. 30, 1922, Aug. 6, 1928, to Sept. 30, 1935, chain gage, at Riparia 66 miles downstream at different datum.

Extremes. Maximum discharge during year, 322,900 cfs May 20 (gage height, 38.05 ft); minimum, 15,300 cfs Jan. 31 (gage height, 9.62 ft); minimum daily, 18,300 cfs Jan. 31.

1909-57: Maximum discharge, 369,000 cfs May 29, 1948 (gage height, 40.36 ft, from 

high-water mark in well); minimum observed, 10,600 cfs Aug. 14, 18, 20, 24-28, 30, 31, 

Sept. 1, 2, 5, 1931, but may have been less during period of ice effect in January 1937.

Maximum stage known, 24.7 ft June 5, 1894, Riparia site and datum, determined from 

floodmarks by U. S. Weather Bureau (discharge, 409,000 cfs).

Remarks. Records excellent. Over 2,840,000 acres are irrigated above station for numerous large irrigation projects. Regulation from many storage reservoirs upstream and 

fluctuations during low-water periods from powerplant on Clearwater River at Lewiston, 

Idaho.

Revisions (water years).--WSP 463: 1916. WSP 933: 1937.

Rating table, water year 1956-57 (gage height, in feet, and 

discharge, In cubic feet per second)

10.4

14.0

19.0

18,100

34,400

67,500

24.0

30.0

37.0

116,700

194,000

304,000

Discharge, in cubic fe'et per second, water year October 1956 to September 1957

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

Tota:

Mean

Ac-ft

Oct.

24,800

25,600

24,800

24, 600

24,100

24,100

24,200

24,800

25,400

25,900

26,200

26,500

27,300

29,200

29,200

29,800

29, 600

29,200

29,000

29,600

27,800

27,200

*27,90O

26,800

25,800

27,000

29,100

32,200

52,800

30,000

29,000

849,500

27,400

*1,685

Nov.

31,300

30,800

28,800

27,300

26,700

27,900

29,600

31,400

30,200

3O.400

29,600

30,100

30,000

31,200

31,200

29,800

29,400

3O,800

29,400

25,800

25,400

25,200

26,500

27,000

25,400

24,900

25,000

24,800

24,100

24,900

842,900

28,100

*1,672

Dec.

24,400

25,100

25,300

*26,600

27,000

25,800

24,300

24,500

24,000

25,600

27,800

34, 200

38,000

46,000

41,900

41,100

40,500

38,700

38 , 800

36,800

34,500

33,200

31 , 600

31 , 600

31 , 900

29,000

25,500

24,700

24, 200

26,100

27 , 800

956,500

30,850

*1,897

Jan.

29,000

27, 100

27,300

26,700

25,400

25, 600

25,200

24,500

24,000

24,700

25,300

26,300

26, 600

26,400

25,900

*23,300

20,200

21,000

20,700

21,300

24,800

26,400

25,000

24,700

25,100

22,200

20 , 500

19,500

19,500

20,400

18,500

742,900

23,960

*1,474

Feb.

25,700

25 , 300

23,500

23,600

27,700

24,600

24,200

25,200

26,000

25,000

25,100

25,100

23,100

22,500

24,700

27,200

25,800

25,400

26,200

27,300

26,500

27,200

26,500

29,100

50,000

*104,000

131,700

123,800

-

*1,022

36,500

*2,0£7

Mar.

100,800

80 , 900

71,500

65,000

61,500

60 , 700

66,900

77,400

83,500

86,900

82,600

78,000

74 , 200

73,200

66,100

61 , 300

61 , 300

63,300

61,300

55,400

58,900

60,200

57,100

52,900

50, BOO

52,400

51,200

54,300

56,000

66,900

73,600

*2,066.1

66,650

*4,098

Apr.

81,400

78,800

75,400

75,400

78,300

101,000

98,800

93,000

83,100

79,800

78,900

79,400

83,800

91,900

102,400

100,000

92,900

89,800

87,700

86,100

85,800

88,400

89,200

87,000

*88 , 200

83,900

79,300

76,000

78,500

95,100

*2,585.5

86,180

*5,128

May

114,700

150,400

142,200

145,500

153,000

165,500

166,400

168,000

194,100

208 , 600

202,000

200,000

214,900

226,500

226,200

226,200

225,000

221,600

256,500

293,800

*287,200

*242,600

223,000

206,200

194,700

186,900

185,000

188,300

195,000

205,500

208,400

*6,179.7

199,500

$12,260

June

209,400

211,200

222,100

221,800

216,000

214,400

215,800

186,200

185,900

168,100

148,100

155,100

150,500

121,200

112,600

103,400

95, 600

88,600

85,800

81,500

79,800

78,300

72,600

68,400

66,500

*63,600

61 , 900

64,500

62,600

59 . 600

+3,826.9

127,600

*7,591

July

56,700

54,500

55,100

52,500

49,000

46,500

44,400

42,000

40,700

59,300

37,600

36,400

35,700

35,200

54,500

52,900

51,600

31,200

30,400

29,200

29,400

29,300

*28,800

28,600

28,100

27,500

26,800

25,900

26,100

25,600

25,200

*1,115.9

55,950

*2,209

Aug.

24,600

24,200

23,700

25,500

23,300

23,800

25,900

24,100

25,500

22,700

22,800

22,600

22,200

21,900

21,500

21,900

20,800

20,500

20,900

21,100

21,400

20,600

20,700

20,800

19,900

19,700

*20,100

19,500

20,200

20,900

21,000

677,700

21,860

*1,544

Sept.

22,400

22,500

22,500

22,500

22,100

21,800

21,400

21 , 600

21,500

21,100

21,000

21,600

21,700

21,500

21,500

21,700

21,500

21 , 500

21,700

22,200

22,500

23,400

23,400

25, 600

*25,000

22,600

22,600

22,600

22,700

22,200

663,700

22,120

*1,516

Calendar year 1956: Max 277,100 Min 21,300 Mean 65,140 Ac-ft 47,290,000

Water year 1956-57: Max 293,800 Min 18,300 Mean 58,980 Ac-ft 42,700,000

Discharge measurement made on 

Expressed In thousands.
246 PALOUSE RIVER BASIN

Palouse River near Colfax, Wash.

Location.--Lat 46°55'30", long 117°19'10", in NW£SW£ sec. 31, T. 17 N., R. 44 E., on right 

bank 3 5 miles northeast of Colfax and 4 miles upstream from mouth of South Fork.

Drainage area. 491 sq mi.

Records available. September 1955 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 2,010 ft (from topographic map).

Extremes.--Maximum discharge during year, 4,280 cfs May 21 (gage height, 7.26 ft); minimum, 3.0 cfs Sept. 13 (gage height, 1.31 ft).

1955-57: Maximum discharge, 4,790 cfs Dec. 22, 1955 (gage height, 7.60 ft), from 

slope-area determination of peak flow; minimum, 3.0 cfs Sept. 13, 1955, Sept. 13, 1957; 

minimum gage height, 1.30 ft Sept. 13, 1955.

Remarks.--Records good except those for periods of ice effect or doubtful gage-height

record, which are poor. Small diversions for irrigation and domestic use above station. 

Slight regulation by millponds above station.

Rating table, water year 1956-57, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.3

1.4

1.5 

1.7

3.0

5.8

10.5

25

1.9 

2.2 

2.7 

3.3

108

235

470

4.0 

5.0 

6.0 

7.5

865

1,640

2,660

4,640

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

TotaJ

Mean

Ac-ft

Oct.

12.5

11.5

12^

13

13

16.5

13

13

13

13.5

14

15

15.5

13

15

18.5

20

22

20

23

39

*43

30

52

51

66

86

80

82

78

59

973.5

31.4

1,930

Nov.

54

61

74

66

33

35

32

34

54

46

37

38

43

46

49

47

54

68

153 ^76

84

70

54

46

46

44

42

34

38

56

1,614

53.8

3,200

Dec.

61

54

*37

38

30

27

26

49

70

110

129

272

241

308

265

276

312

376

535

324

268

238

181

191

178

138

106

110

93

99

106

5,248

169

10,410

Jan.

117

90

97

106

101

95

88

82

76

70

59

54

50

46

*42

35

30

28

27

30

31

32

32

33

33

33

33

*33

33

35

38

1,689

54.5

3,350

Feb.

40

40

40

40

44

50

55

60

70

80

86

92

96

100

103

104

100

90

*73

60

50

60

250

955

*1,810

d2,400

*d2.590

1,850

-

11,388

407

22,590

Calendar year 1956: Max 3,490 Mln 7.4

Mar.

1,370

1,090

937

78S

722

782

dl,290

d2,720

d2, 600

d2,250

dl , 600

dl,210

dl,090

d852

d764

d710

d951

*dl,190

986

972

1,170

1,020

813

692

686

692

642

603

692

1,140

1,560

34,584

1,116

68 , 600

Apr.

1.950

1,800

1,330

1,110

1,250

1,680

1,810

1,610

1,280

1,070

1-.010

986

993

1,050

1,290

1,260

1,040

917

782

710

669

642

636

*636

647

560

490

443

443

550

30,624

1,021

60,740

May

704

734

674

576

510

530

576

510

443

407

364

328

368

500

500

535

485

495

608

2,180

5,950

3,410

*2,040

1,350

979

758

608

510

425

368

308

26,733

862

53,020

June

279

262

241

213

189

244

344

272

210

186

160

158

148

141

131

133

126

113

97

86

80

86

72

*49

63

54

54

52

51

11

4,341

145

8,610

July

42

24

24

28

28

30

26

29

28

26

25

27

20

25

25

22

24

20

21

17

20

*16.5

17.5

17.5

14

13.5

15.5

14

14

13 5

12! 5

679.5

21.9

1,350

Aug.

11.5

11.5

11

11.5

11.5

13.5

14~ 15.5

11

10.5

11

11.5

11.5

11

11

10.5

10.5

8.9

8.4

7.9

7.4

7.4

7.0

6.6

6.2

*6.2

6.2

6.2

"E 5.4 5"

5.8

6.2

294.3

9.49

584

Sept.

5.4

5.4

5.8

4.8

4.2

5.8

7.0

T^

4.2

4.2

3.6

3.4

3.2

3.6

4.2

4.2

3.6

3.6

3.6

3.4

4.2

4.2

3.9

*4.2

4.2

4.2

4.8

5.8

4.8

5 4

133.7

4.46

265

Mean 398 Ac-ft 289,100

Water year 1956-57: Max 3,950 Mln 3.2 Mean 324 Ac-ft 234,600

Peak discharge (base, 2,000 cfs).--Feb. 25 (1 a.m.) 3,340 cfs (6.58 ft); Feb. 27 (time unknown)

3,640 cfs (6.81 ft ); Mar. B (time unknown) about 2,800 cfs; Apr. 1 (10 p.m.) 2,090 cfs (5.47 ft)j 

May 21 (6:50 p.m.) 4,280 efs (7.26 ft)._________________________________________________ 

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed from reconstructed gage-height graph baaed on 

recorder record, weather records, and records for nearby stations.

Note.--Stage-discharge relation affected by Ice Dec. 5-7, Jan. 6-9, Jan. 12 to Feb. 22 (no gageheight record Jan. 25 to Feb. 11; discharge estimated on basis of 1 discharge measurement, weather 

records, and records for nearby stations).
PALOUSE RIVER BASIN 247 

Union Plat Creek near Coifax, Wash.

Location. Lat 46°49'00", long 117°26'05", in SW^-SW^- sec. 5, T. 15 N., R. 43 E., on 

right bank 5| miles southwest of Coifax.

Drainage area. 189 sq mi.

Records available . July 1953 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 1,865 ft (from topographic map).

Extremes. Maximum discharge during year, 826 cfs Feb. 27 (gage height, 5.15 ft); minimum, 

0.4 cfs cfs Aug. 20-22 (gage height, 0.51 ft).

1953-57: Maximum discharge, 1,790 cfs Dec. 21, 1955 (gage height, 7.10 ft); no flow 

Aug. 15 to Sept. 13, 1955.

Remarks. Records fair except those for periods of ice effect, which are poor. Small 

diversions above station for irrigation. No known regulation.

Discharge, in cubic st per second, water year October 1956 to September 1957

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

Total

Mean

Cf sin

In.

Ac-ft

Oct.

2.4

2.6

2.6

2.7

2.7

2.8

3.0

3.0

3.0

3.1

3.2

3.2

3.2

3.1

3.4

3.6

3.6

3.8

4.2

4.0

5.4

*475

4.0

4.6

4.6

4.8

4.6

4.4

4.0 

4.6

4.0

112.2

3.62

0.019

0.02

223

Nov.

4.0

4.0

4.0

4.0

4.4

4.8

4.6

4.4

4.2

4.0

4.2

3.8

3.7

T77

3.7

4.6

7.7

9.4

7.5

10.5

8.5

7.2

7.5

7.7

8.2

8.0

7.0

6.0

5.5 

5.0

171.8

5.73

0.030

0.03

341

Dec.

5.0

5.5

*6.0

5.5

5.0

4.7

4.5

475

5.0

7.0

62

92

43

33

27

32

34

38

48

29

28

27

24

24

21

22

21

20

16 

16.5

18

728.2

23.5

0.124

0.14

1,440

Jan.

17

20

19

20

17

12

14

16

14

13

14.5

14

11

10

*9.3

8.7

.6

.8

~.4

.7

.8

.0

.0

.0

.0

.2

* .2

.5

8.0

8.0

336.2

10.8

0.057

0.07

667

Feb.

8.2

873

8.4

8.6

9.8

15

18.5

18

20

18.5

17.5

18

18

19.5

22

22

21

20

*20

21

21

21

25

79

*236

658

55T

428

-

2,391.3

85.4

0.452

0.47

4,740

Mar.

314

232

177

145

158

161

390 310-

289

261

168

184

160

120

112

109

193

*128

105

103

105

80

72

67

63

56

49

SB" 48

78

102

4,594

148

0.783

0.90

9,110

Apr.

133

Te

58

52

119

96

62

53

46

40

36

35

48

62

79

45

45

50

43

35

32

30

*27

57

85

48

40

32

28 

26

1,610

53.7

0.284

0.32

3,190

May

23

24

26

29

29

33

28

27

28

27

26

25

27

53

41

38

28

53

72

84

82

53

*45

42

32

29

24

22

16.5

17.5

_14

1,100.0

35.5

0.188

0.22

2,180

June

12.5

12.5

11

11

10.5

18.5 18 

15

16

15

12

11

10.5

10.5

9.9

10.5

10.5

8.6

7.8

7.8

8.2

7.8

7.0

*5.9

6.6

6.2

6.6

6.2

6.6

4.8

305.0

10.2

0.054

0.06

605

July

4.2

3.9

3.6

3.3

3.1

2.8

2.6

2.4

2.6

2.4

2.2

2.0

1.8

2.2

2.6

2.2

2.4

2.2

2.0

2.0

2.0

*1.4

1.4

1.3

1.1

1.1

1.1

1.0

1.0

.9

. 8

65.6

2.12

0.011

0.01

130

Aug.

0.8

.6

.6

.8

.9

1.3

1.8

1.4

1.4

1.1

.9

.6

.6

.8

.9

.8

.8

.6

.6

.5

.4

.4

.5

.5

.5

*.5

.5

.6

.6

.6

.8

23.7

0.76

0 .0040

0.005

47

Sept.

1.3

1.6

2.0

T74

1.3

1.3

1.1

1.1

1.0

*1.0

1.1

1.0

1.1

1.3

1.0

1.0

.8

.6

.8

1.0

.9

1.0

.8

*.9

.9

.8

.6

.9

1.0

1.4

32.0

1.07

0.0057

0.006

63

Calendar year 1956 : Max 1,330 Min 1.1 Mean 71.4 Cfsm 0.378 In. 5.13 Ac-ft 51,800

Water year 1956-57 : Max 658 MLn 0.4 Mean 31.4 Cfsm 0.166 In. 2.25 Ac-ft 22,740

Peak discharge (base, 40O cfs).--Feb. 27 (1 a.m.) 826 cfs (5.15 ft); Mar. 7 (3 p.m.) 552 cfs 

(4.41 ft); Mar. 10 (l a.m.) 449 cfs (4.09 ft)._____________________________________

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 27 to Dec. 10, Jan. 14 to Feb. 6.
248 PALOUSE RIVER BASIN

Palouse River at Hooper, Wash.

Location. Lat 46°45'30", long 118"08 "50", in SE£ sec. 27, T. 15 N., R. 37 E., on left 

bank 150 ft downstream from State Highway 11B bridge at Hooper and 0.4 mile upstream 

from Cow Creek.

Drainage area. 2, 540 sq mi, approximately.

Records available.--April to August 1897 (gage heights only), September 1897 to December 

 1899, April 1900 to April 1907, June 1908 to July 1912, March 1913 to March 1916, 

February 1951 to September 1957. Prior to 1904, sometimes published as near Hooper.

Sage.--Water-stage recorder. Altitude of gage is 1,040 ft (from topographic map). Apr. 1 

to Aug. 31, 1897, staff gage at site 2| miles upstream at different datum. Sept. 9, 

1897, to March 1916, various staff gages at site l| miles upstream from present site at 

different daturas. Feb. 8 to Mar. 28, 1951, staff gage at present site and datum.

Average discharge.--19 years (1897-99, 1900-1906, 1908-11, 1913-15, 1951-57), 622 cfs 

(450,300 acre-ft per year).

Extremes.--Maximum discharge during year, 11,100 cfs Feb. 27 (gage height, 12.76 ft); 

minimum, 14.5 cfs Sept. 8 (gage height, 3.33 ft).

1897-1916, 1951-57: Maximum discharge, 29,800 cfs Mar. 2, 1910 (gage height, 

22.00 ft, from graph based on gage readings, site and datum then in use); no flow for 

part of June 25, 1910.

Remarks. Records good except those below 25 cfs or those for periods of ice effect,

which are poor. No regulation. Diversions above station for irrigation, domestic and 

municipal use.

Revisions (water years j. WSP 1217: Drainage area. WSP 1287: 1897-1904, 1910(M), 

1915-16(MJ.WSP 1447: 1906(M), 1910.

Rating table, water year 1956-57, except periods of Ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

3.3 

3.5

3.7 

4.0 

4.5

13

25

42 -75

151

5.0 

5.5 

6.0 

7.0

260

415

630

1,220

8.0

9.0

11.0

13.0

2,030

3,180

6,500

11,800

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Ac-ft

Oct.

42

4ff

49

49

49

50

49

51 

52

55

56

60

60

60

60

63

62

62

65

68

84

85

101

110

102

105

114

*128

137 

137

140

2,353

75.9

4,670

Nov.

135

119

116

116

128

128

106

101 

101

99

112

112

104

102

104

110

123

127

131

149

168

133

130

127

120

108

112

112

112 

112

3,557

119

7,060

Dec.

95

96

96

104

106

92

76

68 

5?

117

142

354

494

390

422

380

*404

474

562

718

490

422

384

338

328

335

282

252

226

228

203

8,770

283

17,400

Jan.

214

219

233

221

205

184

170

176 

192

182

205

174

162

149

140

100

80

75

IX

80

100

110

110

110

110

110

115

115

*120

150

150

4,536

146

9,000

Feb.

150

150

150

150

150

190

200

245

398

544

448

670

776

478

900

615

401

325

293

150

150

200

271

3,210

*5,940

8,610

9,520

6,080

-

41,144

1,469

81,610

Mar.

4,080

3,020

2,340

2,030

1,890

1,810

2,200

4,520 

4,256

4,020

3,360

2,670

2,430

2,180

1,770

1,620

1,740

2,200

1,990

1,780

1,870

1,950

1,650

1,440

1,310

1,280

1,220

1,150

1.110

1,330

1» 890

67,920

2,191

134,700

Apr.

2,550

2,650

2,130

1,770

1,690

2,140

2,310

2,220

1,870

1,570

1,420

1,360

1,350

1,370

1,720

1,720

1,480

1,340

1,190

1,070

994

934

892

898

988

988

820

746

*680

660

43,520

1,451

86,320

May

774

928

928

856

779

1,140

994

856 

757

680

620

576

576" 553

768

790

856

904

1,050

1,670

4,320

5.410

3,820

2,610

1,960

*1,520

1,240

1,060

910 

784

696

41,385

1,335

82,090

June

605

544

499

470

418

436

466

615 

354

418

373

344

319

304

293

290

276

260

248

224

205

190

188

186

*170

151

157

147

135 

151

9,566

319

18,970

July

130

127

119

108

98

94

91

85 

85

79

80

79

73

70

69

67

64

62

60

58

55

*56

55

54

52

43

42

41

41

41

IP2,218

71.5

4,400

Aug.

39

39

40

39

40

40

42

45 

43

41

43

44

38

31

30

31

31

30

30

27

26

24

22

18.5

18

19.5

18.5

20

18.5 

17

961.0

31.0

0^,910

Sept.

16.5

18

17

17

16.5

17

15.5

15. 

15.5

*16.5

16.5

17.5

18.5

17.5

17.5

18

20

21

21

19.5

18

19.5

22

*22

24

25

28

32

35 

34

611.0

20.4

1,210

Calendar year 1956 : Max 6,830 Mln 23 Mean 898 Ac-ft 651,700

Water year 1956-57 : Max 9,320 Mln 15 Mean 621 Ac-ft 449,300

Peak discharge (base, 3,700 cfs). --Feb. 25 (l:3O a.m.) 8,540 cfs (11.86 ft)j Feb. 27 (5:30 a.m.)

11,100 cfs (12.76 ft); Mar. 9 (9 a.m.) 4,490 cfs (9.89 ft); May 22 (7 to 9 a.m.) 5,630 cfs

(10.55 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Jan. 15 to Feb. 7, Feb. 20-22.
PALOUSE RIVER BASIN 249

Williams Lake near Amber, Wash.

Location. La t 47°19'25", long 117°41'55", in NE^SE^r sec. 12, T. 21 N. , R. 40 E. , on the 

west shore at Bunker's Resort, 2 miles southeast of Amber.

Drainage area. 200 sq mi.

Records available. September 1955 to September 1957.

Gage. Staff gage read once daily at various times. Altitude of gage is 2,050 ft (from 

topographic map).

Extremes. Maximum gage height observed during water year, 3.58 ft June 15-25; minimum 

observed, 1.80 ft Oct. 17, 19.

1955-57: Maximum gage height observed, 4.89 ft Apr. 5-7, 1956; minimum observed, 

0.81 ft Oct. 4, 7, 1955.

Remarks. Small diversions for irrigation. Minor regulation by fish screens at outlet.

Gage height, in feet, water year October 1956 to September 1957

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.

1.91

1.89

-,

-

-

_

1.85

-

1.84

1.84

1.85

-

1.84

1.84

-

1.82

1.80

-

1.80

-

_

1.82

1.84

_

1.86

_

1.88

-

1.90

1.90

Nov.

1.90

-

1.90

1.90

-

1.90

1.90

-

1.88

-

.

_

-

-

-

_

-

-

-

1.88

.

1.88

1.88

1.87

1.86

.

1.86

1.86

_

1 . 86

Dec.

1.86

-

1.86

1.86

-

1.86

-

1.85

1.84

1.84

_

1.86

-

1.86

1.86

1.86

-

_

1.90

1.90

_

1.91

1.91

_

1.92

.

1.92

-

1.92

1 92

1.92

Jan.

1.94

-

1.94

1.94

-

_

1.96

-

1.98

2.00

.

2.00

2.00

-

2.00

_

-

_

-

-

_

_

-

2.04

-

.

_

_

_

Feb.

.

-

_

_

-

_

-

-

_

-

_

_

-

-

-

_

-

_

-

-

_

_

2.14

2.20

2.27

2.35

2.39

_

Mar.

.

-

_

_

-

2.45

-

2.46

2.47

2.51

.

_

2.55

2.55

-

2.57

2.65

2.65

2.65

-

2.67

_

2.67

2.67

2.67

2.67

2.67

2.67

Apr.

2.73

2.73

_

2.73

2.75

2.75

2.75

-

2.75

2.76

_

2.76

2.76

2.76

2.77

2.77

2.77

_

2.77

2.77

2.77

_

2.77

_

2.77

.

2.77

2.77

2.79

May

2.79

2.79

_

2.81

2.81

_

2.83

2.83

-

-

2.83

_

2.87

2.88

2.97

2.99

-

3.03

3.09

-

_

3.17

-

3.21

3.23

3.26

3.27

3 32

June

3.33

3.33

-

_

3.35

3.43

-

3.47

3.47

-

3.51

_

3.53

3.56

3.58

3.58

-

3.58

3.58

-

3.58

3.58

3.58

_

3.58

.

_

3.56

3.56

3.54

July

_

3.50

-

3.48

-

3.46

3.43

_

-

3.40

_

3.36

3.32

3.32

-

3.28

-

_

3.22

3.20

3.20

_

.

3.12

3.10

3.O4

_

3.02

3.00

Aug.

2.94

-

2.90

_

2.88

_

-

2.84

-

2.81

2.79

_

2.76

_

-

2.70

2.68

2.66

-

-

2.60

2.58

_

2.54

2.52

_

_

2.46

_

2 .44 

2.42

Sept.

2.41

2.40

-

2.38

2.36

_

2.32

-

2.30

-

_

2.26

-

2.22

2.22

_

2.20

_

2.16

2.15

2.14

2.12

_

_

-

_

_

2.12

2.12

503667 O - 59 - 17
250 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Measurements of streamflow made at points other than regular gaging stations in the area 

covered by this report are given in the following table. Most of these measurements were 

made during periods of base flow when streamflow is primarily from ground-water storage. 

Measurements believed to have been made under base-flow conditions are identified by an 

asterisk (*) to the left of the discharge figure. These measurements when correlated with 

the simultaneous discharge of a nearby stream where continuous records are available will 

give a picture of the low-flow potentiality of stream. The column headed, "Measured previously" shows the water years in which measurements were made at the same, or practically 

the same, site.

Determinations of peak flow at points other than regular gaging stations are given in 

a separate table on page 255.

Discharge measurements at points other than gaging stations during water year 1957

Stream Tributary to Location

Drainage 

area 

(sq ml)

Measured 

previously 

(water 

years)

Date

Discharge 

(cfs)

Pacific CreeK basin, Wyo.

Pacific Creek Snake River. . Sec. 30, T. 4,6 N. , R. 113 W. , 8 

miles above mouth and 7j- miles 

northeast of Moran.

July 16 

Aug. 10

Sept.EE

289 

*70.3

63.7

Buffalo Fork basin, Wyo.

Buffalo Fork. Snake River. . Sec. 25, T. 45 N., R. 113 W., £ 

mile downstream from Blackrock 

ranger station, £ mile upstream 

from Blackrock Creek, and Hi 

miles east of Moran.

Apr. E5 

June 8 

July 15 

Aug. 11 

Sept. 22

128 

2,990 

1,520 

*424 

*238

Hoback River basin, Wyo.

Hoback River.

Do. .......

Do. .......

Snake River. .

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

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

NW£ sec. 24, T. 38 N., R. 114 W.,

1 mile above Cliff Creek and 4

miles northwest of Bondurant.

SWj sec. 4, T. 38 N., R. 114 W.,

below Granite Creek, 8 miles

northwest of Bondurant.

SW£ sec. 2, T. 38 N., R. 115 W.,

at U. 3. Forest Service camp

ground, 4 miles above Willow

Creek and 11 miles northwest of

Bondurant .

-

_

-

Apr. E5

June 9

July 12

Aug. 12

Sept.E6

June 9

July 12

Aug. IE

Sept.E6

Apr. E5

June 9

July 12

Aug. IE

Sept.E6

183

1,310

646

*149

*79.1

2,770

1,430

*374

*214

334

E.910

1,430

*375

*E1E

Greys River basin, Wyo

Blind Bull

Creek.

Deadman Creek

Greys River. .

Greys River. .

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

Snake River. .

Sec. 8, T. 34 N., R. 116 W., at

mouth, 11 miles northeast of

Bedford .

Sec. 5, T. 34 N., R. 116 W., at

mouth, 11 miles northeast of

Bedford .

Sec. 6, T. 34 N., R. 116 W., below Deadman Creek, 11 miles

northeast of Bedford.

-

-

-

June 10

July 13

June 10

July 13

June 10

July 13

Aug. 13

Sept. 27

153

a!5

84.5

a!2

2,100

896

*362

*266

Henrys Fork basin

North Fork

Boone Creek

Middle Fork

Boone Creek

South Fork

Middle Fork

Boone Creek

South Fork

Boone Creek

Squirrel 

Meadow

Creek.

Boone Creek. .

.do .......

Middle Fork

Boone Creek

Boone Creek. .

Conant Creek.

Sec. 19, T. 48 N., R. 117 W.,

above Loon Lake, at road

bridge 2 miles south of Yellowstone National Park boundary,

about 5 miles northeast of

Squirrel ranger station, Wyo.,

and 6 miles east of IdahoWyoming State line.

Sec. 36, T. 48 N. , R. 118 W., at

road bridge 3j miles south of

Yellowstone National Park boundary and 5 miles east of IdahoWyoming State line.

Sec. 36, T. 48 N., R. 118 W., at

road bridge ^ mile north of the

South Fork Boone Creek measuring point.

Sec. 35, T. 48 N., R. 118 W., at

road bridge Z miles east of

Idaho-Wyoming State line and 4 

miles south of Yellowstone National Park boundary.

Sec. 4, T. 47 N., R. 118 W., on 

bridge 500 ft downstream from

Squirrel Meadow guard station, 

Wyo.

-

-

-

-

'

June 11

July 10

Aug. 8

Sept. 17

June 11

July 10

Aug. 8

Sept. 17

June 11

July 10

Aug. 8

Sept. 17

June 11

July 10

Aug. 8 

Sept. 17

June 11 

July 10

Aug. 8 

Sept. 17

168

E9.0

*7.27

*4.19

24.8

3.63

*.73

*.30

38.4

2.43

*.30

0

186

50.6

*2 . 62 

*2.07

35.3 

13.2

*10.3 

*7.65

* Base flow.

a Estimated.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 251

Discharge measurements made at points other than gaging stations during water year 1957 Continued

Stream Tributary to Location

Drainage 

area 

(sq mi)

Measured 

previously 

(water 

years)

Date Discharge 

(ere)

Henrys Fork basin Continued

Teton River. .

Teton Creek. .

Horseshoe

Creek.

Henrys Fork. .

Teton River. .

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

On line between sees. 19 and 30,

T. 3 N., R. 46 K., 100 ft downstream from Moose Creek, 200 ft

upstream from String Canal, and

3j miles southeast of Victor,

Idaho.

1-j miles upstream from Mill Creek,

1.6 miles west of Boy Scout

camp, 4.2 miles east of WyomingIdaho State line, and 7| miles

northeast of Drlggs, Idaho.

Sec. 27, T. 5 N., R. 44 E., 90 ft

upstream from bridge on old

railroad grade, 4 miles upstream from mouth, and 7f miles

west of Drlggs, Idaho.

47.6

33.8

11.7

1946-56b/

1946-56b/

1946-52b/>

1954-56

June 17

July 26

Aug. 15

Aug. 6

June 13

June 26

251

137

98

141

40

22

Bannock Creek basin, Idaho

Rattlesnake

Creek.

Bannock Creek NEA sec. 26, T. 8 S., R. 33 E., 2

miles above mouth and 12 miles

southwest of Pocatello.

c77 1955-56 Oct. 7

Nov. 13

Dec. 9

Jan. 21

Mar. 31

Apr. 2

May 7

May 24

June 17

July 28

Aug. 29

2.63

*3.86

*4.46

*5.89

18.3

11.6

*16.9

29.9

*9.42

*3.04

*2.27

Rock Creek basin, Idaho

East Fork

Rock Creek.

Rock Creek. . . SEt sec. 4, T. 10 S., R. 31 E., 3-Jmiles above mouth and 2-j miles

east of Rockland.

21.2 1955-56 Oct. 8

Nov. 14

Dec. 9

Jan. 22

Feb. 26

Mar. 31

Apr. 2

May 7

May 24

June 17

July 28

Aug. 29

6.66

*8.10

*13.7

*14.2

15.4

7.72

7.03

*3.92

8.83

6.89

8.90

10.9

Raft River basin, Idaho

Raft River. . .

Do. .......

Do ........

Do ........

Do.. ......

Snake River. .

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

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

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

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

NWi sec. 2, T. 14 N., R. 16 W.,

Salt Lake meridian, 5j miles

southeast of Moulton.

NE£ sec. 10, T. 16 S., R. 25 E. ,

Boise meridian, 100 ft downstream from road bridge and 7

miles southeast of Almo.

NWj sec. 12, T. 16 S., R. 25 E.,

Boise meridian, 85 miles southeast of Almo.

NWj sec. 6, T. 16 S., R. 26 E.,

Boise meridian, 9j miles southeast of Almo.

NE-J sec. 6, T. 16 S.. R. 26 E.,

" Boise meridian, 10j miles

southeast of Almo.

.

-

-

-

414

Apr. 23

Apr. 1

Apr. 1

Apr. 1

Apr. 2

12.3

12.3

15.5

14.5

20.4

Tributaries between Snake River at Mllner and Salmon Falls Creek, Idaho

Devils Washbowl Spring

Devils Corral

Spring

(upper

outlet).

Devils Corral

Spring

(lower

outlet).

Unnamed

spring.

Do ........

Do.

Snake River. .

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

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

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

do

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

NE-iNEi sec. 4, T. 10 S., R. 18 E.,

J mile above Twin Falls of

Snake River and plant of Idaho

Power Co. and 3j miles north of

Kimberly.

NE^SE^ sec. 32, T. 9 S., R. 18 E.,

on north side of Snake River,

100 ft above point where spring

cascades down to river.

SE-jNW-j sec. 32, T. 9 S., R. 18 E.,

on north side of Snake River,

1/8 mile above mouth of creek.

Near center of sec. 31, T. 9 S.,

R. 18 E., on north bank of

Snake River, J mile above

Shoshone powerplant.

Outlet to river in NW-jSWj sec.

31, T. 9 S., R. 18 E., on

north bank of Snake River just

above Shoshone Falls, on D. T.

Heter's property.

SW-jNWi sec. 34, T. 9 S., R. 17 E.,

on north aide of Snake River,

200 yards below Rim to Rim

Bridge and 2 miles north of Twin 

Falls.

_

-

_

-

_

_

1902,1917,

1923-24,

1950-56

1902,

1923-24,

1939,

1950-56

1902,1923,

1950-56

1950-56

1950-56

1950-56

Apr. 2

Apr. 2

Apr. 2

Apr. 2

May 16

Apr. 2

*23.2

*40.6

*7.57

*1.80

*5.66

*.87

* Base flow.

b Gaging station operated 1946-52.

c Approximately.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements made at points other than easing stations during water year 1957 Continued

Stream Tributary to Location

Drainage 

area 

(sq mi)

Measured 

previously 

(water 

years)

Date

Discharge 

(cfs)

D Continued

Blue Lakes

Outlet.

Sunnybrook

Spring.

Trail Springs

(upper

outlet).

Crystal

Springs .

Niagara

Springs.

Clear Lakes

Outlet.

Brlggs Creek.

Banbury

Springs .

Unnamed

spring.

Blind Canyon

Spring.

Snake River. .

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

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

do

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

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

do

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

.. ..do....

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

SW^SWi sec. 28, T. 93., R. 17 E.,

at point of entry to Snake

River, 4 miles north of Twin

Falls.

SEiSE^ sec. 19, T. 9 S., R. 17 E.,

3/8 mile above point of entry

to river.

SW^SWi sec. 14, T. 93., R. 16 E.,

1 mile below Rock Creek and 6

miles northwest of Twin Falls.

Sec. 12, T. 9 S R. 15 E., 6*

miles above Devils Washboard

Falls In Snake River and 7

miles northeast of Buhl.

EiNEi- sec. 10 T. 9 3., R. 15 E.,

4-J miles above Devils Washboard Falls In Snake River and

6 miles northeast of Buhl.

SW-J-SEi sec. 2, T. 9 S., R. 14 E.,

at Clear Lakes plant of Idaho

Power Co., 4j miles north of

Buhl.

SWi-SEi sec. 4, T. 93., R. 14 E. ,

2 miles downstream from Clear

Lakes outlet and 5-| miles northwest of Buhl .

SEiNW£ sec. 33, T. 8 S., R. 14 E.,

at footbridge over outlet to

Snake River, 7 miles northwest

of Buhl.

SEijSW-J: sec. 28, T. 83., R. 14 E.,

on east side Snake River, 0.35

mile above Blind Canyon Spring

and 7 miles northwest of Buhl.

NEi-SWi sec. 28, T, 8 S., R. 14 E.,

Just upstream from Box Canyon,

7j- miles northwest of Buhl.

-

-

-

_

.

-

.

-

-

-

1902,

1913-14,

1917-47,

1950-56

1950-56

1917,

1950-56

1902,1917,

1919,

1924-25,

1931,

1950-56

1902,

1917-20,

1924,1931,

1950-56

1902,

1913-14,

1917,1920,

1924,

1926-27,

1937,

1950-56

1902,1913,

1917-20,

1924-25,

1931,

1950-56

1902,1913,

1917,

1919-20,

1924-25,

1950-56

1950-56

1902,1917,

1919,

1950-56

Apr. 3

Apr. 3

Apr. 9

Apr. 4

Apr. 3

Apr. 4

Apr. 5

Apr. 5

Apr. 5

Apr. 5

 272

*14.3

 2.70

 488

*d304

*d513

*dl!3

*d97.6

*4.75

*dll.5

Salmon Falls Creek basin, Idaho

Salmon Falls

Creek.

Do ... .

Snake River. .

miles downstream from dam of Salmon River Canal Co. and 8 miles 

northwest of Roger son.

at Roseworth crossing 5 miles 

south of Castleford.

_ 1912,1946,

1953-56 

1953-55

Dec. 4

Mar. 28 

June 21 

Aug. 23 

Sept. 12

5.35

7.42 

16.7 

14.0 

11.0

Mud Lake-Lost River basins, Idaho

West Camas

Creek.

Camas Creek. .

Do ........

Beaver Creek.

Valley Creek.

Beaver Creek.

Camas Creek. .

Mud Lake .....

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

Camas Creek. .

Beaver Creek.

Camas Creek. .

Sec. 1, T. 13 N., R. 37 E., 1.5

miles downstream from Pete Creek

and 9 miles northwest of Kllgore.

Sec. 7, T. 11 N., R. 39 E., at 18-

mile Shearing Corral, 7 miles

south of Kllgore.

SEi sec. 25, T. 11 N., R. 38 E.,

Just upstream from road crossIng, 11 miles south of Kllgore.

Near south edge sec. 4, T. 13 N.,

R. 36 E., 400 ft downstream

from Union Pacific RR. bridge anc

0.3 mile downstream from

Humphrey.

Sec. 16, T. 13 N., R. 36 E., 400

ft upstream from highway bridge

and 2 miles south of Humphrey.

NE-J sec. 23, T. 12 N. , R. 36 E.,

0.4 mile southeast of Spencer

Post Office and 2j miles upstream from Rattlesnake Creek.

_

210

_

-

_

120

1939

1937-53

1921-27,

1930

1922-24,

1939,

1941-52

June 7

July 9

Aug. 7

Sept. 13

June 7

July 9

Aug. 7

Sept. 13

June 7

Sept. 13

Apr. 27

June 7

July 9

Aug. 6

Sept. 13

Apr. 27

June 7

July 9

Aug. &

Sept. 13

Apr. 27

June 6

July 9

Aug. 6

Sept. 13

57.7

*13.4

*6.64

 6.31

302

29.3

13.8

21.3

289

23.1

23.9

21.2

*1.97

2.89

 1.32

9.69

18.6

4.64

*1.68

*1.96

35.6

87.1

23.1

 9.48

*8.82

* Base flow.

d Discharge represents actual net spring flow adjusted for diversions and surface
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 253

Discharge measurements made at points other than gaging stations during water year 1957 Continued

Stream Tributary to Location

Dra inage 

area 

(sq mi)

Measured 

previously 

(water 

years)

Date Discharge 

(cfs)

Mud Lake-Lost River basins, Idaho Continued

East Pork Big

Lost River.

Do ........

North Pork

Big Lost

River.

Big Lost

River.

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

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

Sec. 36, T. 7 N., R. 20 E., 3

miles upstream from Wild

Horse Creek.

Sec. 28, T. 7 N., R. 21 E., at

Rosenkance Ranch 5.8 miles

upstream from Wild Horse

Creek.

Sec. 23, T. 7 N., R. 19 E., 0.8

mile upstream from Bartlett

Creek, 0.5 mile downstream

from Burnt Creek, and 6.1 miles

upstream from Big Lost River

near Wild Horse.

-

-

-

Apr. 28

June 13

July 17

Aug. 19

Sept. 24

Apr. 28

June 6

July 17

Aug. 19

Sept. 24

60.6

732

213

*62.9

*55.2

14.0

443

82.7

*18.7

*11.9

Tributaries to Snake River from 1000 Springs to Malad River, Idaho

Sand Springs

Creek.

Thousand

Springs .

Rlley Creek

Billingsly

Creek.

Do ........

Birch Creek. ,

Snake River. .

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

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

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

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

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

SE-J- sec. 17, T. 83., R. 14 E.,

100 ft upstream from Hy Berkowltz' house and 7 miles southeast of Hagerman.

Springs enter Snake River between

mile 154.05 on river profile

near line between sees. 17 and

20, T. 8 S., R. 14 E., and mile

151.15 on river profile about

200 ft upstream from line between sec. 1, T. 83., R. 13 E.,

and sec. 6, T. 8 S., R. 14 E.

SHjNEi sec. 6, T. 8 S., R. 14 E.,

at Hagerman Hatchery of U. S.

Pish and Wildlife Service, 100

yards below mouth of Lewis

Creek, 100 ft below small un7

named spring entering from

right, and 5 miles southeast

of Hagerman.

Near line between sees. 31 and 32,

T. 73., R. 14 E. (spring heads

In SWiNWi sec. 32), at E. W.

Bean Farm, 1/8 mile below head

of creek and 3j- miles southeast

of Hagerman.

SW£ sec. 11, T. 7 S., R. 13 E., at

mouth 1-J miles north of Hagerman.

SE-J-SEi sec. 34, T. 6 S., R. 13 E.,

on Bud Smith's property, J mile

south of Malad River and 2i

miles north of Hagerman.

_

-

..

-

_

1902,

1912-13,

1917-21,

1924-25,

1931,

1954-56

1920,

1950-56

1950-56

1950-56

1956

1950-56

Apr. 8

Apr. 18

Apr. 9

Apr. 5

Apr. 9

Apr. 9

*d97 . 8

*el,270

*69.2

*d46.9

172

*d9.82

Malad River basin, Idaho

Malad Springs Malad River. . Springs head In SEi sec. 24, T. 6 

S., R. 13 E., and enter Snake 

River In NW£ sec. 34, T. 6 S., 

R. 13 E., 3 mllea north of 

Hagerman .

1899, 

1910-11, 

1913,1917, 

1919,1924, 

1950-56

Apr. 1 *»H,350

Bruneau River basin, Idaho

Big Plat

Creek.

Three Creek. .

Deer Creek. . .

Cherry Creek.

Deadwood

Creek.

East Pork

Bruneau

River.

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

Three Creek. .

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

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

Sec. 24, T. 15 S., R. 10 E., 5.5

miles northwest of Three Creek.

SW£ sec. 34, T. 15 S., R. 11 E.,

at Three Creek.

SEJ sec. 35, T. 15 S., R. 11 E.,

li miles east of Three Creek.

SE£ sec. 32, T. 15 S., R. 11 E.,

2 miles west of Three Creek.

SEi sec. 20, T. 15 S., R. 12 E.,

5^ miles northeast of Three

Creek.

62

-

.

22

_

1912-14,

1916

1912-14,

1916

May 15

May 19

May 15

May 19

May 15

May 19

May 15

May 19

May 15

May 17

May 19

125

189

50.0

41.5

66.4

99.6

36.4

65.1

B45.0

23.4

30.3

Owyhee River basin

Crooked Creek Owyhee River. At former gaging station 6 miles

southwest of Rome, Oreg.

cl,700 1946,

1949-56

Nov. 16

Dec. 12

Jan. 23

Apr. 18

Aug. 22

*26.9

*24.8

*25.6

*27.5

*24.0

* Base flow, 

a Estimated, 

c Approximately.

d Discharge represents actual net spring flow adjusted for diversions and surface flow. 

e Discharge obtained by measuring Snake River above and below spring outlets and adjusting for 

surface flow.
254 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Diaoharge measurements made at points other than gaging stations during water year 1957 Continued

Stream Tributary to Location

Drainage 

area 

(sq ml)

Measured 

previously 

(water 

years)

Date Discharge 

(ofs)

Boise River basin, Idaho

South Pork

Bolae River

Big Smoky

Creek.

South Fork

Boise River

Boise River. .

South Fork

Boise River

Boiae River. .

NWi sec. 16, T. 3 N., R. 13 E.,

100 ft upatream from Big Smoky

Creek and 21 milea eaat of

Featherville.

SE£ sec. 9, T. 3 N., R. 13 E., 1

mile upstream from South Pork

Boise River and 22 miles east

of Featherville .

NEi sec. 17, T. 3 N., R. 13 E., 1

mile upstream from Boardman

Creek and 20^- miles east of

Peathervllle.

-

-

-

1927

1927

May 23

June 20

May 23

June 20

July 9

Aug. 21

Sept. 30

525

573

957

525

550 *138

*112

Malheur River basin, Oreg.

Warm Springa 

Creek.

North Fork 

Malheur 

River.

Near line between sees. 1 and 2, 

T. 19 S., R. 37 E., 2.5 miles 

northeast of Beulah.

090 1936,1938, 

1941,1944, 

1946-56

Mar. 5 87.0

Burnt River basin, Oreg.

North Pork 

Burnt River

Burnt River. . Sec. 3, T. 11 S., R. 36 E., 1/8 

mile below Trout Creek and 1 

mile aoutheast of Whitney.

102 1952-55 Oct. 4 *1.36

Powder River basin, Oreg.

Powder River.

Wolf Creek...

Snake River. .

Powder River.

At former gaging station near

Halnes.

At former gaging atatlon near

North Powder.

572

32.9

1947-56

1946-56

Aug. 15

Aug. 15

*4.24

*1.78

Salmon River basin, Idaho

Salmon River.

Do........

Redfish Creek

Valley Creek.

Salmon River.

Snake River. .

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

Salmon River.

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

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

Sec. 7, T. 9 N., R. 14 E., 3.7

miles upstream from Redfiah

Creek and 8 milea southeast of

Stanley.

NEi sec. 25, T. 10 N., R. 13 E.,

at bridge croaslng U. S. Highway 93, 4 milea southeast of

Stanley.

Sec. 35, T. 10 N., R. 13 E., at

bridge croaslng creek 1.1 miles

downstream from store at Redfish Lake.

Sec. 25, T. UN., R. 12 E., Just

below bridge on Stanley-Bear

Valley road, 5.2 miles northwest of Upper Stanley.

Sec. 8, T. 24 N., R. 4 E., 100 ft

downstream from Pall Creek, 2jmilea northeast of French Creek

Post Office, and 16 miles east

of Riggins.

_

-

-

_

12,270

1927

1944-56f/

Apr. 29

July 10

Aug. 13

Sept. 17

June 5

Apr. 29

June 5

July 10

Aug. 13

Sept. 17

Apr. 29

June 5

July 19

Aug. 14

Sept. 18

Oct. 5

Nov. 17

Jan. 10

Mar. 2

Apr. 5

May 8

June 2

June 25

July 11

Aug. 27

Sept. 16

329

622

*222

*205

2,800

45.7

607

297

*86.8

*47.5

188

1,050

241

*67.2

*65.7

*4,220

*4,940

*3,670

5,350

5,000

37,000

69,100

23,900

12,600

*3,860

*3,750

Qrande Ronde River basin, Oreg.

Qrande Ronde 

River.

Do. .......

Indian Creek.

Creek. 

Prairie Creek

Minam River. .

Snake River.. 

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

Qrande Ronde 

River.

Wallowa River

Sec. 36, T. 3 S., R. 35 E., above 

Meadow Creek, 2 miles northeast 

of Starkey. 

NWt sec. 7, T. 3 S., R. 40 E., £ 

mile below Catherine Creek and 

3 miles northwest of Cove.

Hilgard. 

At former gaging station near 

Imbler.

Sec. 8, T. 2 S., R. 45 E., 2 

miles southeast of Enterprise.

t mile above mouth.

208 

1,080

22

1952-55 

1955

1946-50, 

1956

1953-54

Oct. 1 

Aug. 30

Oct. 7

July 31

na.o

*25.7

*3.82

136

* Base flow.

c Approximately.

f Gaging station operated 1944-56.
DISCHAKGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 255

Discharge measurements made at points other than gaging stations during water year 1957 Continued

Stream Tributary to Location

Drainage 

area 

(sq ml)

Measured 

previously 

(water 

years)

Date

Discharge 

(cfs)

Tucannon River basin, Wash.

Tucannon

River.

Snake River. . NE£SW£ sec. 21, T. 12 N., R. 38,

2j miles below former gaging

station site at road crossing

and 3 miles east of Starbuck.

430 Feb. 27

Mar. 17

Apr. 26

May 23

June 27

July 24

Aug. 28

Sept. 26

Sept. 27

639

257

217

343

92.8

*63.8

*60.4

*57.8

60.6

* Base flow.

The following table contains determinations of peak discharge made at crest stage by 

indirect methods or by current meter or computed from rating curve at points other than 

regular gaging stations.

Determinations of peak discharge at points other than gaging stations during water year 1957t

Stream

Cottonwood

Creek.

Bully Creek..

Maine ur River

Do. .......

Button Creek.

Powder River.

Prairie Creek

Dry Creek. . . .

Unnamed

tributary.

Do. .......

Rose Creek...

Unnamed

tributary.

Do.. ......

Tributary to

Malheur River

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

Snake River. ,

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

Powder River.

Snake River. ,

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

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

Smith Gulch

Creek.

Missouri Flat

Creek.

Fourmlle

Creek.

Palouse River

West Branch

North Pine

Creek.

Location

Sec. 3, T. 20 S., R. 42 E., at

bridge on U. S. Highway 20, 2

miles east of Harper and 19

miles southeast of Vale, Oreg.

Sec. 2, T. 18 S., R. 43 E. , 1.1

miles above Bureau of Reclamation damslte and 10 miles

northwest of Vale, Oreg.

Sec. 20, T. 18 S., R. 45 E., at

sewerage plant above Inflow

from Willow Creek, 0.25 mile

east of Vale, Oreg.

Sec. 28, T. 17 S., R. 47 E., at

bridge on U. S. Highway 30, 2

miles north of Ontario, Oreg.

Sec. 28, T. 9 S., R. 40 E., at

U. S. Highway 30, 0.25 mile

south of city limits of Baker,

Oreg.

Sec. 16, T. 9 S., R. 40 E., at

bridge on Myrtle Street, 0.4

mile upstream from U. S. Highway 30 In Baker, Oreg.

Sec. 1, T. 2 S., R. 44 E., 0.55

mile above Wallowa River bridge

on State Highway 82 and 0.35

mile south of city limits of

Enterprise, Oreg.

SWi sec. 35, T. 11 N., R. 45 E.,

at county road, 4j miles southwest of Clarkston, Wash.

SE-J sec. 29, T. 12 N., R. 43 E.,

at Eureka Road, 4^ miles northeast of Pataha and 7 miles

northeast of Pomeroy, Wash.

NE-J sec. 29, T. 15 N., R. 45 E.,

at county road to Palouse, 2

miles north of Pullman, Wash.

SEi sec. 9, T. 15 N., R. 45 E . ,

at State Highway 3, 5 miles

northeast of Pullman, Wash.

SEtSW£ sec. 10, T. 16 N., R. 43

E., at U. S. Highway 295, 1

mile west of Colfax, Wash.

SW£ sec. 16, T. 21 N., R. 43 E.,

at U. S. Highway 195, 0.7 mile

south of Plaza, Wash.

Drainage 

area 

(sq ml)

198

*540

¥5, 880

*4,680

57.2

351

80.1

2.29

1.85

1.14

1.52

2.10

1.64

Measured 

previously 

(water 

years)

Date

1957

Feb. 24

Feb. 24

Feb. 24

Feb. 25

Feb. 24

Feb. 24

Feb. 24

1955

Dec. 22

1956

Feb. 21

1957

Feb. 24

1955

Feb. 8

Dec. 22

1957

May 6

1955

Feb. 8

1956

May 8

1957

Feb. 25

1956

May 8

1955

Feb. 9

Dec. 22

1957

Feb. 24

May 20

1955

Feb. 9

Dec. 22

Discharge 

(cfs)

5,140

5,600

20, 800

24,000

1,630

2,460

1,460

(a)

61.1

123

104

85.3

92.8

112

23.1

b!40

33.4

1,130

17.9

70.5

12.8

60.5

67.0

80.9

t Includes some measurements made prior to water year but not previously published, 

t Approximately.

a No evidence of any flow during the 1955 water year.

b Road overflow computed from estimated road profile and local residents' estimate of depth over 

road.
256 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Determinations of peak discharge at points other than gaging stations 

during water year 1957 Contlnuedt

Stream

Unnamed

tributary.

Squaw Creek..

Negro Creek. .

Unnamed

tributary.

Negro Creek. .

Unnamed

tributary.

Do ........

Do. .......

Smith Canyon.

Rye Grass

Coulee.

Tributary to

West Branch

North Pine

Creek.

Pine Creek. . .

Sprague Lake .

Negro Creek. .

Sprague Lake .

Co« Creek. . . .

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

Smith Canyon.

Snake River. .

Smith Canyon.

Location

£ mile upstream from above site

(see preceding page).

NEi aec. 24, T. 21 N., R. 42 E.,

5 miles above mouth, 3 miles

southwest of Flaza, Wash.

NE^NEj sec. 30, T. 21 N., R. 39

E., at county road crossing,

2 miles east of Sprague, Wash.

NEtNE£ sec. 23, T. 21 N., R. 38

E., at railroad crossing, 100

ft upstream from U. S. Highway

10 at east edge of Sprague,

Wash.

NEi sec. 23, T. 21 N., R. 38 E.,

200 ft downstream from railroad

bridge at north edge of Sprague,

Wash.

SEi sec. 32, T. 20 N., R. 31 E.,

at county road crossing, 9-J

miles northeast of Rltzvllle,

Wash.

South half of line between sees.

5 and 6, T. 15 N., R. 38 E., at

county road crossing, 2.5 miles

north of State Highway 11B and

4.8 miles northeast of Hooper.

SEjNWi sec. 9, T. 12 N., R. 32 E.,

at county road, 85 miles south

of Connell, Wash.

NEj sec. 1, T. 11 N., R. 30 E.,

li miles northeast of Eltopla,

Wash.

NWj sec. 12 T. 11 N., R. 31 E.,

Just upstream from unnamed tributary, 6j miles east of Eltopla

and 14f miles south of Connell,

Wash.

Drainage 

area 

(sq ml)

1.24

3.84

_

-

-

1.51

.75

1.71

46.2

17.6

Measured 

previously 

(water 

years)

Date

1957

May 14

May 14

1956

Mar. 9

Mar. 9

Mar. 9

1951

Mar. 18

1955

Feb. 8

1956

Feb. 21

1957

Feb. 25

1955

Feb. 8

_

1956

Feb. 21

1957

Feb. 24

1956

Feb. 21

Feb. 21

Discharge 

(cfs)

1,560

5,310

0239

23.1

C175

d200

82.5

105

43.3

6.4

(a)

45.8

10.5

462

126

t Includes some messurements made prior to water year but not previous 

a No evidence of any flow during the 1955 water year. 

c Simultaneous current meter measurements at peak at upstream site, 

d Computation of discharge based on local residents' estimate of depth

ly published, 

of water over culvert.
INDEX

Page 

Accuracy of field data and computed

results......................... 8

Acre-foot, definition of.............. 2

Afton, Wyo., Swift Creek near......... 23

Agencies other than Geological Survey,

records collected by............ 11

Agency Valley Reservoir, Oreg.,

contents of..................... 164

Ahsahka , Idaho , North Fork Clearwater

River near...................... 242

Alpine, Idaho, Indian Creek above

reservoir near.................. 26

McCoy Creek above reservoir, near... 25 

Alpine, Wyo., Greys River above

reservoir, near................. 20

Snake River above reservoir near.... 19

Amber, Wash., Williams Lake near...... 249

American Falls Reservoir at American

Falls, Idaho.................... 11,51

Anderson Ranch Dam, Idaho, Anderson

Ranch Reservoir at.............. 143

South Fork Boise River at........... 144

Anderson Ranch Reservoir at Anderson

Ranch Dam, Idaho................ 143

Anderson Ranch Reservoir total surface

inflow determination............ 142

Arco, Idaho, Big Lost River near...... 103

Argora, Idaho, Medicine Lodge Creek

near............................ 89

Arrowrock, Idaho, Arrowrock Reservoir

at. ............................. 145

Moore Creek near .................... 147

Robie Creek near .................... 148

Arrowrock Reservoir at Arrowrock,

Idaho........................... 145

Ashton, Idaho, Henrys Fork near....... 35

Asotin Creek near Asotin, Wash........ 234

Baker, Oreg. , Powder River

near. ........................... 199

Banks, Idaho, North Fork Payette

River near...................... 4,178

South Fork Payette River near....... 169

Bannock Creek near Idaho City, Idaho.. 146 

near Pocatello, Idaho............... 50

Bear Creek above reservoir, near

Irwin, Idaho.................... 28

near Wallowa, Oreg.................. 231

Bear Creek basin, Idaho, gagingstation records in.............. 28-29

Bear Valley Creek near Cape Horn,

Idaho.......................... . 216

Beaver Creek, at Camas, Idaho......... 87

at Dubois, Idaho.................... 86

Bellevue, Idaho, Big Wood River near.. 112 

Bennett, Idaho, Lime Creek near....... 142

Little Camas Canal near............. 142

Beulah, Oreg., North Fork Malheur

River at........................ 161

North Fork Malheur River near....... 160

Big Creek near Big Creek,

Idaho........................... 217

BSg Lost River, at Howell Ranch,

near Chilly, Idaho.............. 94

at Wild Horse, near Chilly, Idaho... 93 

below Mackay Reservoir, near Mackay,

Idaho........................... 102

east channel of, above Mackay

Reservoir, near Mackay, Idaho... 95 

near Arco , Idaho.................... 103

west channel of, above Mackay

Reservoir, near Mackay, Idaho... 96 

Big Wood River, at Hailey

Idaho..........................110-111

below Magic Dam, near Richfield,

Idaho........................... 115

near Bellevue , Idaho................ 112

near Ketchum, Idaho................. 107

Big Wood Slough at Hailey, Idaho...... 109

Birch Creek (tributary to Mud Lake) ,

near Reno, Idaho................ 90

Blackfoot, Idaho, Blackfoot River near 45

Blackfoot, Idaho , Snake River

near............................. 46

Blackfoot River near Blackfoot, Idaho.. 45 

Blackfoot River basin, Idaho, gagingstation records in............... 45-46

Blaine, Idaho, Camas Creek near........ 113

Blaine County Investment Co.'s

canal near Howe , Idaho........... 92

Blue Lakes Spring near Twin Falls,

Idaho............................ 73

Boise, Idaho, Boise River at........... 153

Boise River near..................... 150

Lucky Peak Reservoir near............ 149

Boise River, at Boise, Idaho........... 153

at Notus, Idaho...................... 157

diversions from.....................153,166

near Boise, Idaho.................... 150

near Twin Springs, Idaho............. 140

South Fork, at Anderson Ranch Dam,

Idaho............................ 144

near Featherville, Idaho..........141,142

Boise River basin, Idaho, gagingstation records in..............140-157

Box Canyon Springs near Wendell,

Idaho............................ 78

Brailsford ditch near Hagerman,

Idaho............................ 104

Bridge, Idaho, Raft River near......... 54

Bridgeport, Oreg., Burnt River

near............................. 197

Bruneau River, East Fork, near

Three Creek, Idaho............... 128

East Fork, near Hot Spring, Idaho.... 129

near Hot Spring, Idaho............... 130

Bruneau River basin, Idaho, gagingstation records in..............127-130

Buffalo Fork near Moran,

Wyo.............................. 16

Buhl, Idaho, Deep Creek

near. ............................ 77

Salmon Falls Creek near.............. 84

Snake River near ..................... 76

Bully Creek near Vale, Oreg............ 163

Bungalow ranger station, Idaho,

North Fork Clearwater River at... 241 

Burley, Idaho, Minidoka North Side

Pump Canal....................... 64

Burnt River, at Huntington Oreg........ 198

near Bridgeport, Oreg................ 197

near Hereford, Oreg.................. 196

Burnt River basin, Oreg., gagingstation records in..............195-198

C. J. Strike Reservoir near Grand

View , Idaho...................... 131

Caldwell, Idaho, Lake Lowell

near............................. 151

Camas, Idaho, Beaver Creek at.......... 87

Camas Creek at....................... 85

Camas Creek (Malad River basin) , near

Blaine Idaho.................... 113

Camas Creek (Mud Lake basin), at

Camas, Idaho..................... 85

Cambridge, Idaho, Pine Creek near...... 186

Weiser River near.................... 185

Cape Horn, Idaho, Bear Valley

Creek near....................... 216

Middle Fork Salmon River near........ 215

Carey, Idaho, Little Wood Reservoir

near. ............................ 117

Little Wood River near..........116 ,118 ,119

Cascade, Idaho, Cascade Reservoir at... 176 

North Fork Payette River at.......... 177

Cascade Reservoir at Cascade, Idaho.... 176

Cassia Creek near Elba , Idaho.......... 56

Catherine Creek near Union, Oreg....... 224

Cedar Creek near Roseworth, Idaho...... 83

Cedar Creek Reservoir near

Roseworth, Idaho................. 83

Cedar Draw near Filer , Idaho........... 75

Cfs-day, definition of................. 2

Challis, Idaho, Challis Creek near..... 208

257
258 INDEX

Page 

Challis , Idaho, Salmon River near..... 207

Challis Creek near Challis, Idaho..... 208

Chester, Idaho, Fall River near....... 37

Chilly, Idaho, Big Lost River

near............................ 93,94

Clarkston, Wash., Snake River near.... 4,245

Clayton, Idaho, Salmon River

near............................ 206

Clear Creek near Naf, Idaho........... 55

Clearwater River at Kamiah, Idaho..... 240

at Spalding, Idaho.................. 244

North Fork, at Bungalow ranger

station, Idaho.................. 241

North Fork, near Ahsahka, Idaho..... 242

South Fork, near Elk City, Idaho.... 238

near Grangeville, Idaho........... 239

Clearwater River basin, Idaho, gagingstation records in............. 235-244

Colfax , Wash., Palouse River near..... 246

Union Plat Creek near............... 247

Computations, accuracy of, results of. 8 

Contact, Nev., Salmon Falls Creek

near............................ 79

Contents, definition of............... 3

Control, definition of................ 3

Cooperation, record of................ 1-2

Cottonwood Creek near Smoot, Wyo...... 22

Crane Creek, at mouth, near

Weiser, Idaho................... 190

near Midvale, Idaho................. 189

Crane Creek Reservoir near Midvale,

Idaho........................... 188

Cubic feet per second per square mile,

definition of................... 2

Cubic foot per second, definition of.. 2

Data, accuracy of..................... 8

explanation of...................... 3-8

Deadwood Reservoir near Lowman, Idaho. 166 

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

Deep Creek near Buhl, Idaho........... 77

Devils Washbowl Spring, near

Kimberly, Idaho................. 71

Discharge measurements at points other

than gaging stations: 

Bannock Creek basin................. 251

Boise River basin................... 254

Bruneau River basin................. 253

Buffalo Fork basin.................. 250

Burnt River basin................... 254

Grande Ronde River basin............ 254

Greys River basin................... 250

Henrys Fork basin..................250-251

Hoback River basin.................. 250

Malad River basin................... 253

Malheur River basin................. 254

Mud Lake-Lost River basins........ .252-253

Owyhee River basin.................. 253

Pacific Creek basin................. 250

Powder River basin.................. 254

Raft River basin.................... 251

Rock Creek basin.................... 251

Salmon Falls Creek basin............ 252

Salmon River basin.................. 354

Snake River, tributaries to, from 

1000 Springs to Malad River, 

Idaho........................... 253

Snake River at Milner, tributaries 

between, and Salmon Falls 

Creek, Idaho...................251-252

Tucannon River basin................ 255

Note.--Streams for which only discharge measurements are available 

are not entered by name in this 

index. 

Drainage area, definition of.......... 3

Drewsey, Oreg., Malheur River

near............................ -158

Dry Creek, at Eagle, Idaho............ 156

near Eagle, Idaho................... 155

Dubois, Idaho, Beaver

Creek at........................ 86

Eagle, Idaho, Dry Creek at............ 156

Dry Creek near....................... 155

Eagle, Idaho, Spring Valley

Creek near.......................

Elba, Idaho, Cassia Creek near.........

Elgin, Oreg., Grande Ronde River

near.............................

Elk City, Idaho, South Fork Clearwater

River near.......................

Elk Creek above reservoir, near Irwin,

Idaho............................

Emmett, Idaho, Payette River near. 

Etna, Wyo., Salt River, above

reservoir, near..................

Fall Creek near Anderson Ranch Dam, 

Idaho.........................

Fall River, diversions from.........

near Chester, Idaho...............

near Squirrel, Idaho...............

Featherville, Idaho, South Fork

Boise River near..............

Filer, Idaho, Cedar Draw near.......

Floods , special reports

154

56

225

238

27

180

24

142

36,37

37

36

141

75

11

Garden Valley, Idaho, South Fork

Payette River near............... 168

Gold Creek, Nev., Owyhee River

near............................. 133

Wild Horse Reservoir near............ 132

Gooding, Idaho, Malad River near....... 123

Gooding Canal at Milner, Idaho......... 67

Goose Creek above Trapper Creek,

near Oakley, Idaho............... 61

Goose Creek basin, Idaho, gagingstation records in............... 61-63

Grand View, Idaho, C. J. Strike

Reservoir near................... 131

Grande Ronde River, at La Grande,

Oreg............................. 223

at Rondowa, Oreg..................... 232

at Troy, Oreg......................... 233

near Elgin, Oreg..................... 255

Grande Ronde River basin, Oreg.,

gaging-station records in.......223-233

Grangeville, Idaho, South Fork

Clearwater River near............ 239

Grassy Lake, Idaho, contents of........ 43

Greys River above reservoir, near

Alpine, Wyo...................... 20

Gros Ventre River at Kelly, Wyo........ 17

Hagerraan, Idaho, Brailsford ditch

near............................. 104

King Hill Canal near................. 124

Riley Creek near..................... 105

Snake River near..................... 106

Hailey, Idaho, Big Wood River at......110-111

Big Wood Slough at................... 109

Heise , Idaho , Snake River near......... 31

Henrys Fork, at St. Anthony, Idaho..... 38

diversions from...................... 38,41

near Ashton, Idaho................... 35

near Island Park, Idaho.............. 34

near Lake, Idaho..................... 32

near Rexburg, Idaho.................. 42

Henrys Fork basin, Idaho, gagingstation records in............... 32-44

smaller reservoirs in................ 43

Henrys Lake, Idaho, contents of........ 43

Hereford, Oreg., Burnt River

near............................. 196

Hoback River near Jackson, Wyo......... 18

Hooper, Wash., Palouse River at........ 248

Hope, Oreg., Malheur River near........ 162

Horseshoe Bend, Idaho, Payette

River near....................... 179

Hot Spring, Idaho, Bruneau River near.. 130 

East Fork Bruneau River near......... 129

Howe, Idaho, Blaine County Investment

C o.'s canal near................. 92

Little Lost River near............... 91

Huntington, Oreg., Burnt River

at............................... 198

Hurricane Creek near Joseph,

Oreg............................. 229

Hydrologic conditions.................. 11-12
INDEX 2S9

Idaho City, Idaho, Bannock Creek near. 

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

Indian Creek above reservoir, near

Alpine, Idaho...................

Indian Valley, Idaho, Little Welser

River near......................

Irwin, Idaho, Bear Creek above

reservoir, near.................

Elk Creek above reservoir, near.....

Palisades Reservoir near............

Snake River near....................

Island Park, Idaho, Henrys Pork near..

Island Park Reservoir near..........

Island Park Reservoir near Island

Park, Idaho.........................

Jackson, Wyo_. , Hoback River near... .

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

Jarbidge River, East Pork, near

Three Creek, Idaho...............

Johnson Creek at Yellow Pine,

Idaho.........................

Jordan Creek above Lone Tree Creek, 

near Jordan Valley, Oreg......

Jordan Valley, Oreg., Jordan Creek 

near..........................

Joseph, Idaho, Snake River near.....

Joseph, Oreg., East Fork Wallowa

River near....................

Hurricane Creek near..............

Wallowa Lake near.................

Wallowa River at..................

Kamiah, Idaho, Clearwater River at.... 

Kelly, Wyo., Gros Ventre River at..... 

Kendrick, Idaho, Potlatch Creek at.... 

Ketchum, Idaho, Big Wood River

near............................

Warm Springs Creek near.............

Kimberly, Idaho, Devils Washbowl

Spring near.....................

Snake River near....................

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

King Hill Canal near Hagerman, Idaho.. 

Knox, Idaho, South Pork Salmon

River near......................

La Grande, Oreg., Grande Ronde

River at........................

Lake, Idaho, Henrys Pork near.........

Lake Fork. See Payette River, Lake

Fork. 

Lake Pork Reservoir near McCall,

Idaho...........................

Lake Irrigation District Canal near

McCall, Idaho...................

Lake Lowell near Caldwell, Idaho......

Lake Walcott, Idaho, diversions

from............................

near Minidoka, Idaho................

Lakes and Reservoirs:

Agency Valley Reservoir, Oreg.......

American Falls Reservoir at American 

Falls, Idaho....................

Anderson Ranch Reservoir at Anderson 

Ranch Dam, Idaho................

Anderson Ranch Reservoir total

surface inflow determination....

Arrowrock Reservoir at Arrowrock, 

Idaho...........................

C. J. Strike Reservoir near Grand 

View, Idaho.....................

Cascade Reservoir at Cascade,

Idaho...........................

Cedar Creek Reservoir near

Roseworth, Idaho................

Crane Creek Reservoir near Midvale, 

Idaho...........................

Deadwood Reservoir near Lowman,

Idaho...........................

Grassy Lake , Idaho..................

Henrys Lake , Idaho..................

Island Park Reservoir near Island 

Park, Idaho.....................

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

146

203

26

187

28

27

29

30

34

33

33

18

13

127

219

136

136

202

226

229

227

228

240

17

243

107

108

71

72

4,125

124

218

223

32

173

174

151

58-59 

57

164

51

143

142

145

131

176

83

188

166

43

43

33

13

jakes and Reservoirs Continued: 

Lake Pork Reservoir near McCall,

Idaho............................ 173

Lowell,Lake, near Caldwell, Idaho.... 151

Little Wood Reservoir near Carey,

Idaho............................ 117

Lost Valley Reservoir near Tamarack,

Idaho............................ 183

Lucky Peak Reservoir near Boise,

Idaho............................ 149

Mackay Reservoir near Mackay, Idaho.. 100 

Magic Reservoir near Richfield,

Idaho............................ 114

Mud Lake near Terreton, Idaho........ 88

Oakley Reservoir near Oakley, Idaho.. 63 

Owyhee Reservoir at Owyhee Dam,

near Nyssa, Oreg................. 138

Palisades Reservoir near Irwin,

Idaho............................ 29

Payette Lake at McCall, Idaho........ 170

Salmon River Canal Co. reservoir

near Rogerson, Idaho............. 81

Unity Reservoir near Unity, Oreg..... 195

Walcott, Lake, near Minidoka,

Idaho............................ 57

Wallowa Lake near Joseph, Oreg......227,228

Warmsprings Reservoir, Oreg.......... 164

Wild Horse Reservoir near Gold

Creek, Nev....................... 132

Williams Lake near Amber, Wash....... 249

beadore, Idaho, Texas Creek near....... 211

bemhi River near Lemhi, Idaho.......... 212

Lime Creek near Bennett,

Idaho............................ 142

Little Camas Canal at heading, near

Bennett, Idaho................... 142

Little Lost River near Howe, Idaho..... 91

Little Salmon River at Riggins,

Idaho............................ 221

Little Weiser River near Indian

Valley, Idaho.................... 187

Little Wood Reservoir near Carey,

Idaho............................ 117

Little Wood River, at Campbell Ranch, "

near Carey, Idaho................ 116

at Shoshone , Idaho................... 122

below reservoir, near Carey, Idaho... 118 

near Carey, Idaho.................... 119

near Richfield , Idaho................ 121

Lochsa River near Lowell, Idaho........ 237

Lost Creek near Tamarack, Idaho........ 184

Lost River-Mud Lake basins, Idaho,

gaging-station records in........85-103

Lost Valley Reservoir near Tamarack,

Idaho............................ 183

Lostine River near Lostine , Oreg....... 230

Lowell, Idaho, Lochsa River near ....... 237

Selway River near.................... 235

Lowman, Idaho, Deadwood Reservoir

near............................. 166

Deadwood River near.................. 167

South Fork Payette River at.......... 165

Lucky Peak Reservoir near Boise ,

Idaho............................ 149

McCall, Idaho, Lake Fork Payette

River near......................172,175

Lake Fork Reservoir near............. 173

Lake Irrigation District Canal near.. 174 

North Fork Payette River at.......... 171

Payette Lake at...................... 170

McCammon, Idaho, Marsh Creek near...... 48

McCoy Creek above reservoir, near

Alpine , Idaho.................... 25

Mackay, Idaho, Big Lost River

near..........................95,96,102

Mackay Reservoir near................ 100

Sharp ditch near..................... 101

Surface inflow to Mackay Reservoir

near............................. 99

Warm Spring Creek near............... 97,98

Mackay Reservoir, near Mackay,

Idaho............................ 100

Surface inflow to, near Mackay,

Idaho............................ 99
260 INDEX

Page 

Magic Reservoir near Richfield,

Idaho........................... 114

Malad River near Gooding, Idaho....... 123

Malad River basin, Idaho, gagingstation records in.............107-124

Malheur River, afc Little Valley, near

Hope, Oreg...................... 162

below Warmsprings Reservoir, near

Riverside, Oreg................. 157

near Drewsey, Oreg.................. 158

near Namorf, Oreg................... 11

North Fork, above Agency Valley

Reservoir, near Beulah, Oreg.... 160

at Beulah, Oreg................... 161

Malheur River basin, Oreg., gagingstation records in.............158-164

reservoirs in....................... 164

Mann Creek near Weiser, Idaho......... 193

Map of the United States.............. 9

Marsh Creek near McCammon, Idaho...... 48

May, Idaho, Pahsimeroi River

near............................ 209

Medicine Lodge Creek at Ellis Ranch,

near Argora, Idaho.............. 89

Midvale, Idaho, Crane Creek near...... 189

Crane Creek Reservoir near.......... 188

Milner, Idaho, Gooding Canal afc....... 67

Milner low-lift canal near.......... 66

North Side Twin Falls Canal afc...... 68

P. A. lateral near.................. 65

Snake River at...................... 70

South Side Twin Falls Canal at...... 69

Milner low-lift canal near Milner,

Idaho........................... 66

Minidoka, Idaho, Lake Walcott near.... 57

North Side Minidoka Canal near...... 58

Snake River near.................... 60

South Side Minidoka Qanal near...... 59

Minidoka North Side Pump Canal

near Burley, Idaho.............. 64

Moore Creek, above Robie Creek near

Arrowrock, Idaho................ 147

Moran, Wyo., Buffalo Fork near........ 16

Jackson Lake at..................... 13

Pacific Creek near.................. 15

Snake River at...................... 14

Mountain Home feeder canal near

Mountain Home, Idaho............ 126

Mud Creek near Tamarack, Idaho........ 220

Mud Lake near Terreton, Idaho......... 88

Mud Lake-Lost River basins, Idaho,

gaging-station records in.......85-103

Murphy, Idaho, Snake River

near............................ 131

Haf, Idaho, Clear Creek near.......... 55

Neeley, Idaho, Snake River at......... 52

North Side Minidoka Canal near

Minidoka, Idaho................. 58

North Side Twin Palls Canal at Milner,

Idaho........................... 68

Notus, Idaho; Boise River

at.............................. 157

Nyssa, Oreg., Owyhee Reservoir near... 138

Oakley, Idaho, Goose Creek

near............................ 61

Oakley Reservoir near............... 63

Trapper Creek near.................. 62

Oakley Reservoir near Oakley, Idaho... 63 

Order, downstream of listing

gaging-sfcations................. 3

Owyhee Dam, Oreg., Owyhee River

below........................... 139

Owyhee Reservoir at Owyhee Dam, near

Nyssa, Oreg..................... 138

Owyhee River, above China diversion

dam, near Owyhee, Nev........... 134

below Owyhee Dam, Oreg.............. 139

near Gold Creek, Nev................ 133

near Rome, Oreg..................... 137

South Fork, near Whiterock, Nev..... 135

Owyhee River basin, Nev.-Oreg.,

gaging-station records in......132-139

Oxbow, Oreg., Snake River at.......... 201

Page 

P. A. lateral near Milner, Idaho....... 65

Pacific Creek near Moran, Wyo.......... 15

Pahsimeroi River near May, Idaho....... 209

Palisades Reservoir near Irwin,

Idaho............................ 29

Palouse River, at Hooper, Wash......... 248

near Coifax, Wash.................... 246

Palouse River basin, Wash., gagingstafcion records in..............246-249

Panther Creek near Shoup, Idaho........ 213

Payette Lake afc McCall, Idaho.......... 170

Payette River, Lake Fork, above Jumbo

Creek, near McCall, Idaho........ 172

Lake Fork, below Lake Irrigation 

District Canal, near McCall, 

Idaho............................ 175

near Emmett, Idaho................... 180

near Horseshoe Bend, Idaho........... 179

near Payette, Idaho.................. 181

North Fork, at Cascade, Idaho........ 177

at McCall, Idaho................... 171

near Banks, Idaho.................. 4,178

South Fork, at Lowman, Idaho......... 165

near Banks, Idaho.................. 169

near Garden Valley, Idaho.......... 168

Payette River basin, Idaho, gagingstation records in..............165-181

Peak discharge, indirect determinations of....................255-256

Picabo, Idaho, Silver Creek near....... 120

Pine Creek near Cambridge, Idaho....... 186

Pocatello, Idaho, Bannock Creek near... 50 

Portneuf River at.................... 49

Portneuf River, at Pocafcello, Idaho.... 49

at Topaz , Idaho...................... 47

Portneuf River basin, Idaho, gagingstation records in............... 47-49

Potlatch Creek at Kendrick, Idaho...... 243

Powder River, near Baker, Oreg......... 199

near Robinette, Oreg................. 200

Powder River basin, Oreg., gagingstation records in..............199-200

Powell ranger station, Warm Springs

Creek near....................... 236

Publications on streamflow by

Geological Survey................ 8-11

by State agencies .................... 11

Raft River at Peterson Ranch, near

Bridge, Idaho.................... 54

Raft River basin, Idaho, gagingstation records in............... 54-56

Reno, Idaho, Birch Creek near.......... 90

Reservoirs. See Lakes and Reservoirs . 

Rexburg, Idaho, Henrys Fork near....... 42

Richfield, Idaho, Big Wood River near.. 115 

Little Wood River near............... 121

Magic Reservoir near................. 114

Riggins, Idaho, Little Salmon River afc. 221 

Riley Creek, below Lewis Spring near

Hagerman, Idaho.................. 105

Riley Creek basin, Idaho, gagingstation records in..............104-105

Riverside Oreg., Malheur River near.... 159

Robie Creek near Arrowrock, Idaho...... 148

Robinette, Oreg., Powder River near.... 200

Rock Creek near Rock Creek, Idaho...... 74

near Rockland, Idaho................. 53

Rockland, Idaho, Rock Creek near........ 53

Rogerson, Idaho, Salmon River Canal

Co. canal near................... 82

Salmon River Canal Co. reservoir

near............................. 81

Rome, Oreg., Owyhee River near......... 137

Rondowa, Oreg., Grande Ronde River

at............................... 232

Roseworth, Idaho, Cedar Creek near..... 83

Cedar Creek Reservoir near........... 83

Runoff in inches, definition of........ 2

St. Anthony, Idaho, Henrys Fork at..... 38

Teton River near..................... 40

Salmon Palls Creek, above upper Vineyard ditch, near Contact, Nev.... 79
INDEX 261

Page

Salmon Falls Creek, near Buhl, Idaho.. 84 

near San Jacinto , Nev............... 80

Salmon Falls Creek basin, Idaho-Nev.,

gaglng-station records in....... 79-84

Salmon River, at Salmon, Idaho........ 210

at Whlteblrd, Idaho................. 222

below Valley Creek, at Stanley,

Idaho........................... 205

below Yankee Fork, near Clayton,

Idaho........................... 206

Middle Fork, near Cape Horn,

Idaho........................... 215

near Challls, Idaho................. 207

near Shoup, Idaho................... 214

South Fork, near Khox, Idaho........ 218

Salmon River basin, Idaho, gagingstation records in............. 204-222

Salmon River Canal Co. canal near

Rogerson, Idaho................. 82

Salmon River Canal Co. reservoir near

Rogerson, Idaho................. 81

Salt River, above reservoir, near

Etna, Wyo....................... 24

near Smoo t, Wyo..................... 21

Salt River basin, Wyo., gaging-station

records in...................... 21-24

San Jacinto, Nev., Salmon Falls Creek

near. ........................... 80

Selway River near Lowell, Idaho....... 235

Sharp ditch near Mackay, Idaho........ 101

Shelley, Idaho, Snake River near...... 44

Shoshone, Idaho, Little Wood River at. 128 

Shoup, Idaho, Panther Creek near...... 213

Salmon River near................... 214

Silver Creek, Idaho, near Picabo,

Idaho........................... 120

Silver Lake Canal, diversions from.... 228

Smoot, Wyo., Cottonwood Creek near.... 22

Salt River near..................... 21

Snake River, above reservoir, near

Alpine, Wyo..................... 19

at King Hill, Idaho................. 4,125

at Milner, Idaho.................... 70

at Moran, Wyo....................... 14

at Neeley, Idaho.................... 52

at Oxbow , Oreg...................... 201

at Weiser, Idaho.................... 194

below Lower Salmon Falls, near

Hagerman, Idaho................. 106

diversions from................44,46,64-69

near Blackfoot, Idaho............... 46

near Buhl, Idaho.................... 76

near Clarkston, Wash................ 4,245

near Heise, Idaho................... 31

near Irwin, Idaho................... 11,30

near Joseph, Idaho.................. 202

near Kimberly, Idaho................ 72

near Minidoka, Idaho................ 60

near Murphy, Idaho.................. 131

near Shelley, Idaho ................. 44

South Side Minidoka Canal near

Minidoka, Idaho................. 59

South Side Twin Falls Canal at Milner,

Idaho........................... 69

Spalding, Idaho, Clearwater River at.. 244 

Spring Valley Creek near Eagle, Idaho. 154 

Squirrel, Idaho, diversions from Fall

River near...................... 36

Fall River near..................... 36

Stage-discharge relation, definition

of.............................. 2

Stanley, Idaho, Salmon River at....... 205

Valley Creek at..................... 204

Strike Reservoir. See C. J. Strike

Reservoir. 

Swift Creek near Aft on, Wyo........... 23

Page 

Tamarack, Idaho, Lost Creek near....... 184

Lost Valley Reservoir near........... 183

Mud Creek near....................... 220

Weiser River at..................... 182

Terms, abbreviations, definition of.... 2-3

Terreton, Idaho, Mud Lake near......... 88

Teton basin tributaries near

Driggs, Idaho.................... 11

Teton River, Idaho, diversions from.... 41

near St. Anthony, Idaho.............. 40

near Tetonia, Idaho.................. 39

Tetonia, Idaho, Teton River near....... 39

Texas Creek near Leadore , Idaho........ 211

Three Creek, Idaho, East Fork Bruneau

River near....................... 128

East Fork Jarbidge River near........ 127

Topaz, Idaho, Portneuf River at........ 47

Trapper Creek near Oakley, Idaho....... 62

Troy, Oreg., Grande Ronde River at..... 233

Twin Falls, Idaho, Blue Lakes Spring

near............................. 73

Twin Springs, Idaho, Boise River

near............................. 140

Union, Oreg., Catherine Creek near..... 224

Union Flat Creek near Colfax,

Wash. ............................ 247

Unity Reservoir near Unity, Oreg....... 195

Vale, Oreg., Bully Creek near.......... 163

Valley Creek at Stanley, Idaho......... 204

WSP, definition of..................... 3

Wallowa, Oreg., Bear Creek near........ 231

Wallowa Lake, Oreg., diversions

from............................. 228

Wallowa Lake near Joseph, Oreg......... 227 ,

Wallowa River, at Joseph, Oreg......... 228

East Fork, near Joseph, Oreg......... 226

Warm Spring Creek, east channel of,

near Mackay, Idaho............... 97

west channel of, near Mackay, Idaho.. 98 

Warm Springs Creek (tributary to Big 

Wood River), at Guyer Hot 

Springs , near Ketchum, Idaho..... 108

Warm Springs Creek (tributary to Lochsa 

River) near Powell ranger 

station, Idaho.................... 236

Warmsprings Reservoir, Oreg., contents

of................................ 164

Weiser, Idaho, Crane Creek near........ 190

Mann Creek near...................... 193

Snake River at....................... 194

Weiser Irrigation District Canal

near............................. 192

Weiser River near.................... 191

Iweiser Irrigation District Canal near

Weiser, Idaho ...................... 192

Weiser River, at Tamarack, Idaho....... 182

near Cambridge, Idaho................ 185

near Weiser, Idaho................... 191

Weiser River basin, Idaho, gagingstation records in..............182-193

Wendell, Idaho, Box Canyon Springs

near............................. 78

Whitebird, Idaho, Salmon River at...... 222

Whiterock, Nev., South Fork Owyhee

River near....................... 135

Wild Horse Reservoir near Gold Creek,

Nev.............................. 132

Williams Lake near Amber, Wash......... 249

Wolf Creek near Powder, Oreg........... 11

Work, diversion of..................... 2

scope of..................... , f ...... 1

Yellow Pine, Idaho, Johnson Creek at... 219

U. S. GOVERNMENT PRINTING OFFICE : 1959 O - 503667