Quality of

Surface Waters of the 

United States 

1957

Parts 9-14. Colorado River Basin to Pacific 

Slope Basins in Oregon and Lower Columbia 

River Basin

Prepared under the direction of S. K. LOVE, Chief, Quality of Water Branch

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1523

Prepared in cooperation with the States of 

California, New Mexico, and Utah, 

U.S. Bureau of Reclamation, and with 

other agencies

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1961
UNITED STATES DEPARTMENT OF THE INTERIOR 

STEWART L. UDALL, Secretary

GEOLOGICAL SURVEY 

Thomas B. Nolan, Director

For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington 25, D.C.
PREFACE

This report was prepared by the Geological Survey in cooperation with the States of California, New Mexico, and Utah, U. S. 

Bureau of Reclamation, and with other agencies by personnel of the 

Water Resources Division under the direction of L. B. Leopold, 

chief hydraulic engineer, and S. K. Love, chief, Quality of Water 

Branch. The data were collected and computed under the supervision of the following district chemists:

Eugene Brown................ Sacramento, Calif.

J. G. Connor ............... Salt Lake City, Utah

J. M. Stow ............... Albuquerque, N. Mex.

H. A. Swenson.................. Portland, Oreg.

Ill

CONTENTS

Page

Introduction .......................................... 1

Collection and examination of samples .................. 3

Chemical quality .................................... 3

Temperature ....................................... 4

Sediment ........................................... 4

Expression of results ................................. 6

Composition of surface waters ......................... 8

Mineral constituents in solution ....................... 9

Silica ............................................. 9

Aluminum ......................................... 9

Manganese ........................................ 9

Iron .............................................. 10

Calcium........................................... 10

Magnesium ........................................ 10

Sodium and potassium .............................. 10

Carbonate and bicarbonate .......................... 11

Sulfate ............................................ 11

Chloride .......................................... 11

Fluoride .......................................... 11

Nitrate............................................ 12

Boron ............................................ 12

Dissolved solids ................................... 13

Properties and characteristics of water ................ 13

Temperature....................................... 13

Oxygen consumed .................................. 13

Color ............................................. 13

Hydrogen-ion concentration ......................... 14

Specific conductance................................ 14

Hardness.......................................... 14

Acidity............................................ 15

Corrosiveness ..................................... 15

Percent sodium .................................... 15

Sodium^adsorption-ratio ............................ 16

Sediment ........................................... 16

Streamflow........................................... 17

Publications.......................................... 17

Cooperation .......................................... 19

Division of work ...................................... 20

Literature cited ...................................... 21

Chemical analyses, water temperatures, and sediment ... 22

Part 9. Colorado River basin ........................ 22

Colorado River at Hot Sulphur Springs, Colo. (main

stem) ........................................... 22
VI CONTENTS

Chemical analyses, etc. Continued Page 

Colorado River basin Continued

Eagle River basin .................................. 25

Eagle River at Gypsum, Colo ...................... 25

Colorado River near Glenwood Springs, Colo. (main

stem)........................................... 28

Colorado River near Cameo, Colo. (main stem)....... 31

Gunnison River basin ............................... 34

Gunnison River near Grand Junction, Colo........... 34

Dolores River basin ................................ 37

Dolores River near Cisco, Utah.................... 37

Colorado River near Cisco, Utah (main stem)......... 43

Green River basin .................................. 49

Green River near Green River, Wyo ................ 49

Blacks Fork near Marston, Wyo.................... 55

Henrys Fork at Linwood, Utah ..................... 58

Green River near Greendale, Utah ................. 61

Yampa River near Maybell, Colo ................... 64

Little Snake River near Lily, Colo.................. 70

Green River near Jensen, Utah .................... 73

Duchesne River near Randlett, Utah ................ 77

White River near Watson, Utah .................... 80

Green River near Ouray, Utah ..................... 83

Price River at Woodside, Utah ..................... 88

Green River at Green River, Utah .................. 91

San Rafael River near Green River, Utah ........... 97

Colorado River at Kite, Utah (main stem)............. 103

San Juan River basin ............................... 110

San Juan River near Archuleta, N. Mex............. 110

San Juan River at Bloomfield, N. Mex .............. Ill

Animas River at Farmington, N. Mex .............. 121

San Juan River at Shiprock, N. Mex ................ 127

San Juan River near Bluff, Utah .................... 133

Colorado River at Lees Ferry, Ariz (main stem) .... 139

Paria River basin .................................. 146

Paria River at Lees Ferry, Ariz ................... 146

Little Colorado River basin ......................... 150

Little Colorado River at Woodruff, Ariz............. 150

Little Colorado River at Cameron, Ariz............. 155

Miscellaneous analyses of streams in Little Colorado

River basin in Arizona .......................... 161

Colorado River near Grand Canyon, Ariz. (main stem) 162

Bright Angel Creek basin ........................... 169

Miscellaneous analyses of streams in Bright Angel

Creek basin in Arizona.......................... 169

Virgin River basin ................................. 170

Virgin River at Littlefield, Ariz.................... 170
CONTENTS VII

Chemical analyses, etc. Continued Page 

Colorado River basin Continued 

Lake Mead near Boulder City, Nev. (main stem)...... 176

Colorado River below Hoover Dam, Ariz.-Nev.

(main stem)..................................... 181

Colorado River near Topock, Ariz................... 184

Colorado River below Parker Dam, Ariz. -Calif....... 185

Colorado River below Palo Verde Dam, Calif......... 186

Colorado River below Cibola Valley, Ariz ............ 188

Gila River basin ................................... 190

Willow Creek near Double Circle Ranch, near

Morenci, Ariz ................................. 190

San Simon Creek near Solomon, Ariz ............... 191

Gila River at Kelvin, Ariz......................... 193

Salt River below Stewart Mountain Dam, Ariz ....... 196

Oak Creek near Cornville, Ariz.................... 198

Verde River below Bartlett Dam, Ariz.............. 199

Agua Fria River below Lake Pleasant Dam, Ariz .... 202

Gila River below Gillespie Dam, Ariz .............. 204

Miscellaneous analyses of streams in Gila River

basin in Arizona ............................... 207

Colorado River at Yuma, Ariz. (main stem).......... 208

Diversions and return flows at and below Imperial Dam 209 

Gila Gravity Main Canal at Imperial Dam ........... 209

Yuma Main Canal below Colorado River Siphon at

Yuma, Ariz.................................... 211

Part 10. The Great basin ........................... 212

Sevier Lake basin.................................. 212

Sevier River near Lynndyl, Utah................... 212

Carson River basin ................................ 215

East Fork Carson River near Gardenville, Nev...... 215

Humboldt River basin .............................. 216

Humboldt River near Rye Patch, Nev............... 216

Pyramid and Winnemucca Lake basin ................ 219

Miscellaneous analyses of streams in Pyramid and 

Winnemucca Lake basin in California............. 219

Honey Lake basin .................................. 220

Miscellaneous analyses of streams in Honey Lake

basin in California ............................. 220

Part 11. Pacific slope basins in California............ 221

Santa Clara River basin ............................ 221

Miscellaneous analyses of streams in Santa Clara 

River basin in California........................ 221

Ventura River basin ............................... 221

Miscellaneous analyses of streams in Ventura River

basin in California ............................. 221
VIII CONTENTS

Chemical analyses, etc. Continued Page 

Pacific slope basins in California--Continued

Santa Maria River basin............................ 222

Miscellaneous analyses of streams in Santa Maria

River basin in California........................ 222

Carmel River basin................................ 223

Carmel River near Carmel, Calif.................. 223

Pajaro River basin ................................ 224

Uvas Creek near Morgan Hill, Calif................ 224

Pajaro River at Chittenden, Calif .................. 225

Sequel Creek basin................................. 226

Sequel Creek at Soquel, Calif...................... 226

San Lorenzo River basin............................ 227

San Lorenzo River at Big Trees, Calif ............. 227

San Francisquito Creek basin ....................... 228

Miscellaneous analyses of streams in San Franeisquito Creek basin in California................... 228

Guadalupe River basin ............................. 229

Los Gatos Creek at Los Gatos, Calif ............... 229

Miscellaneous analyses of streams in Guadalupe

River basin in California........................ 230

Coyote Creek basin ................................ 231

Coyote Creek near Madrone, Calif ................. 231

Alameda Creek basin .............................. 232

Alameda Creek near Niles, Calif .................. 232

Miscellaneous analyses of streams in Alameda Creek

basin in California ............................. 236

Pacheco Creek basin ............................... 237

Miscellaneous analyses of streams in Pacheco Creek

basin in California ............................. 237

Kern River basin .................................. 238

Kern River near Kernville, Calif .................. 238

Kern River below Isabella Dam, Calif .............. 239

Kern River near Bakersfield, Calif................. 240

Miscellaneous analyses of streams in Kern River

basin in California.............................. 241

Tulare Lake basin ................................. 242

Tule River near Porterville, Calif ................. 242

Kaweah River near Three Rivers, Calif............. 243

Kings River below North Fork, Calif ............... 244

Kings River below Pine Flat Dam, Calif ............ 245

Kings River at Peoples Weir, near Kingsburg, Calif . 246

San Joaquin River basin ............................ 247

San Joaquin River below Friant, Calif .............. 247

San Joaquin River near Biola, Calif ................ 248

San Joaquin River near Mendota, Calif.............. 251

San Joaquin River near Dos Palos, Calif............ 252
CONTENTS IX

Chemical analyses, etc. Continued Page 

Pacific slope basins in California Continued 

San Joaquin River basin Continued 

Bear Creek near Stevinson, Calif .................. 253

San Joaquin River at Fremont Ford Bridge, Calif.... 254

Merced River at Exchequer Dam, Calif............. 257

Merced River near Stevinson, Calif ................ 258

San Joaquin River near Grayson, Calif.............. 259

Tuolumne River above La Grange Dam, near

La Grange, Calif............................... 260

Tuolumne River at Hickman, Calif ................. 261

Tuolumne River at Tuolumne City, Calif............ 262

M. I. D. Lateral No. 5 spillway near Modesto, Calif. 263 

San Joaquin River at Maze Road Bridge, near

Modesto, Calif................................. 265

Stanislaus River at Tullock Damsite, near Knights

Ferry, Calif................................... 266

Stanislaus River near mouth, near Vernalis, Calif... 267 

San Joaquin River near Vernalis, Calif ............. 268

San Joaquin River at Mossdale, Calif............... 274

San Joaquin River at Garwood Bridge, near Stockton,

Calif.......................................... 275

Calavaras River near Jenny Lind, Calif ............ 276

Stockton Ship Channel near Rindge Pump, on Rindge

Tract, Calif ................................... 277

Old River at south tip of Fabian Tract, near Tracy,

Calif.......................................... 278

Delta-Mendota Canal near Tracy, Calif............. 279

Delta-Mendota Canal at Tracy Pumping Plant, Calif.. 280 

Delta-Mendota Canal near Mendota, Calif........... 283

Old River at Clifton Court Ferry, Calif............. 284

Italian Slough at mouth, near Bryon, Calif ........... 285

Indian Slough near Brentwood, Calif................ 286

Old River at Orwood Bridge, near Middle River,

Calif.......................................... 287

Rock Slough near Knightsen, Calif*................. 288

Old River at Mandeville Island, Calif............... 289

Mokelumne River at Lancha Plana, Calif............ 290

Mokelumne River at Woodbridge, Calif ............. 291

Consumnes River at Michigan Bar, Calif............ 294

Delta Cross Channel near Walnut Grove, Calif....... 295

Little Potato Slough near Terminous, Calif.......... 296

San Joaquin River at Antioch, Calif................. 297

Miscellaneous analyses of streams in San Joaquin

River basin in California........................ 297

Sacramento River basin ............................ 300

Sacramento River at Delta, Calif................... 300
CONTENTS

Chemical analyses, etc. --Continued Page 

Pacific slope basins in California Continued 

Sacramento River basin Continued

Pit River near Montgomery, Calif.................. 302

McCloud River above Shasta Lake, Calif............ 304

Sacramento River at Keswick, Calif ................ 306

Sacramento River near Redding, Calif.............. 307

Cottonwood Creek near Cottonwood, Calif........... 308

Sacramento River at Bend, Calif ................... 310

Mill Creek at mouth, near Los Molinos, Calif ....... 313

Deer Creek at Highway 99 E Bridge, near Vina,

Calif.......................................... 314

Sacramento River near Hamilton City, Calif......... 315

Big Chico Creek near Chico, Calif ................. 316

Sacramento River at Butte City, Calif .............. 317

Butte Creek near Chico, Calif ..................... 320

Colusa Trough near Colusa, Calif.................. 321

Sacramento River at Knights Landing, Calif......... 322

Sacramento Slough at Knights Landing, Calif........ 325

Feather River near Oroville, Calif................. 326

South Honcut Creek near Bangor, Calif ............. 331

Yuba River near Smartville, Calif.................. 332

Yuba River at Marysville, Calif.................... 333

Bear River near Wheatland, Calif.................. 334

Feather River at Nicolaus, Calif................... 335

American River at Fair Oaks, Calif................ 338

American River at Sacramento, Calif............... 341

Sacramento River at Sacramento, Calif............. 342

Clear Lake near Clear Lake Oaks, Calif............ 349

Clear Lake at Lakeport, Calif ..................... 350

Cache Creek near Lower Lake, Calif............... 351

North Fork Cache Creek near Lower Lake, Calii .... 352

Cache Creek near Capay, Calif .................... 353

Putah Creek near Winters, Calif................... 354

Sacramento River at Snodgrass Slough, near

Courtland, Calif................................ 355

Lindsay Slough near Rio Vista, Calif ............... 356

Sacramento River near Rio Vista, Calif............. 357

Miscellaneous analyses of streams in Sacramento

River basin in California........................ 358

Napa River basin ................................. 364

Napa River near St. Helena, Calif.................. 364

Sonoma Creek basin................................ 367

Miscellaneous analyses of streams in Sonoma Creek

basin in California ............................. 367

Russian River basin ............................... 368

East Fork Russian River at Potter Valley, Calif..... 368
CONTENTS XI

Chemical analyses, etc. Continued Page 

Pacific slope basins in California Continued

Russian River basin--Continued

East Fork Russian River near Calpella, Calif ....... 369

Russian River at Ukiah, Calif...................... 370

Russian River near Hopland, Calif ................. 371

Russian River near Healdsburg, Calif .............. 372

Russian River at Guerneviile, Calif ................ 373

Eel River basin................I.................... 374

Eel River near McCann, Calif ..................... 374

South Fork Eel River near Miranda, Calif........... 375

Eel River at Scotia, Calif ......................... 377

Miscellaneous analyses of streams in Eel River basin

in California................................... 379

Mad River basin ................................... 381

Miscellaneous analyses of streams in Mad River

basin in California ............................. 381

Klamath River basin ............................... 383

Klamath River below Fall Creek, near Copco, Calif.. 383

Klamath River at Somesbar, Calif.................. 384

Trinity River at Lewiston, Calif ................... 386

South Fork Trinity River near Salyer, Calif......... 388

Trinity River near Hoopa, Calif.................... 392

Klamath River near Klamath, Calif................. 397

Smith River basin ................................. 398

Smith River near Crescent City, Calif.............. 398

Part 12. Pacific slope basins in Washington and upper

Columbia River basin ........................... 399

Pacific slope basins north of Columbia River .......... 399

Willapa River basin................................ 399

Willapa River at Lebam, Wash..................... 399

Chehalis River basin ......;........................ 400

Chehalis River near Grand Mound, Wash............ 400

Skokomish River basin ............................. 401

South Fork Skokomish River near Potlatch, Wash.... 401

Vance Creek near Potlatch, Wash.................. 402

Skokomish River near Potlatch, Wash .............. 403

Purdy Creek near Union, Wash .................... 404

Weaver Creek near Potlatch, Wash................. 405

Nisquaily River basin .............................. 406

Nisqually River near National, Wash ............... 406

Mineral Creek near Mineral, Wash ................ 407

Duwamish River basin.............................. 408

Green River near Palmer, Wash................... 408

Green River near Auburn, Wash ................... 412

Lake Washington basin ............................. 413

Cedar River near Landsburg, Wash ................ 413
XII CONTENTS

Chemical analyses, etc. Continued Page 

Pacific slope basins in Washington and upper Columbia

River basin Continued 

Pacific slope basins north of Columbia

River C ontinued 

Snohomish River basin ............................. 414

Wallace River at Gold Bar, Wash .................. 414

Stillaguamish River basin........................... 415

Jim Creek near Arlington, Wash .................. 415

North Fork Stillaguamish River near Darrington,

Wash ......................................... 416

Pilchuck Creek near Bryant, Wash ................. 417

Skagit River basin ................................. 418

Skagit River above Alma Creek, near Marblemount, 

Wash ......................................... 418

Cascade River at Marblemount, Wash .............. 419

Upper Columbia River basin ......................... 420

Pend Oreille River basin ........................... 420

Blackfoot River near Bonner, Mont................. 420

Columbia River at international boundary (main stem) 421 

Spokane River basin................................ 423

Coeur D'Alene River near Cataldo, Idaho ........... 423

Columbia River at Grand Coulee Item, Wash, (main

stem) ......................................... 425

Yakima River basin ................................ 427

Yakima River at Kiona, Wash ..................... 427

Part 13. Snake River basin.......................... 430

Snake River near Heise, Idaho (main stem)........... 430

Henrys Fork basin ................................. 433

Henrys Fork near Rexburg, Idaho .................. 433

Snake River at King Hill, Idaho (main stem) .......... 434

Boise River basin ................................. 436

Boise River near Twin Springs, Idaho ............. 436

Boise River at Notus, Idaho ....................... 439

Snake River at Oxbow, Oreg. (main stem)............ 441

Salmon River basin ................................ 443

Salmon River near Shoup, Idaho ................... 443

Grande Ronde River basin .......................... 445

Grande Ronde River at Troy, Oreg ................. 445

Clearwater River basin............................. 446

Warm Springs Creek above Jerry Johnson Hot Springs

near Powell ranger station, Idaho ................ 446

Warm Springs Creek near Powell ranger station,

Idaho.......................................... 447

Lochsa River near Lowell, Idaho................... 448

South Fork Clearwater River near Elk City, Idaho ... 450 

Clearwater River at Kamiah, Idaho ................ 452
CONTENTS XIII

Chemical analyses, etc. Continued Page 

Snake River basin Continued 

Snake River at Central Ferry, near Pomeroy, Wash.

(main stem).................................... 454

Part 14. Pacific slope basins in Oregon and lower

Columbia River basin ........................... 457

Columbia River basin ............................... 457

John Day River basin............................... 457

Desolation Creek near Dale, Oreg.................. 457

Deschutes River basin.............................. 458

Deschutes River near Culver, Oreg ................ 458

Crooked River near Culver, Oreg .................. 459

Metolius River near Grandview, Oreg .............. 460

Deschutes River near Madras, Oreg................ 461

Deschutes River at Moody, near Biggs, Oreg........ 462

Columbia River at Maryhill Ferry, near Rufus, Oreg.

(main stem).................................... 463

Klickitat River basin ............................... 465

Klickitat River near Pitt, Wash .................... 465

Willamette River basin ............................. 466

Middle Fork Willamette River below North Fork,

near Oakridge, Oreg ........................... 466

Middle Fork Willamette River near Dexter, Oreg .... 467

Fall Creek below Wineberry Creek, near Fall Creek,

Oreg.......................................... 468

Middle Fork Willamette River at Jasper, Oreg ...... 469

South Fork McKenzie River near Rainbow, Oreg ..... 470

North Santiam River below Boulder Creek, near

Detroit, Oreg.................................. 471

Breitenbush River above Canyon Creek, near Detroit,

Oreg.......................................... 472

North Santiam River at Niagara, Oreg.............. 473

Middle Santiam River at mouth, near Foster, Oreg.. 474 

Willamette River at Salem, Oreg .................. 475

Lewis River basin ................................. 477

East Fork Lewis River near Heisson, Wash ......... 477

Kalama River basin................................ 478

Kalama River below Italian Creek, near Kalama,Wash. 478 

Cowlitz River basin................................ 479

Cispus River near Randel, Wash ................... 479

Cowlitz River near Kosmos, Wash ................. 480

West Fork Tilton River near Morton, Wash ......... 481

Cowlitz River near Mayfield, Wash................. 482

Toutle River near Silver Lake, Wash ............... 483

Cowlitz River at Castle Rock, Wash................ 484

Coweman River near Kelso, Wash.................. 485

Abernathy Creek basin ............................. 486

Abernathy Creek near Longview, Wash ............. 486
XIV CONTENTS

Chemical analyses, etc. Continued Page 

Pacific slope basins in Oregon and lower Columbia

River basin Continued 

Columbia River basin Continued 

Elokomin River basin .............................. 487

Elokomin River near Cathlamet, Wash............. 487

Grays River basin ................................. 488

West Branch Grays River near Grays River, Wash .. 488 

Pacific slope basins in Oregon....................... 489

Coquille River basin ............................... 489

Rock Creek near Illahe, Or eg...................... 489

South Fork Coquille River at Powers, Oreg ......... 490

Rogue River basin ................................. 491

Rogue River at Grants Pass, Oreg ................. 491

Index ............................................... 493

ILLUSTRATION

Page

Figure 1. Map of the United States showing basins covered 

by the four water-supply papers on quality of surface 

waters in 1957 ..................................... 2
QUALITY OF SURFACE WATERS 

OF THE UNITED STATES, 1957

PARTS 9-14

INTRODUCTION

The quality-of-water investigations of the United States Geological Survey are concerned with chemical and physical characteristics of the surface and ground water supplies of the Nation. 

Most of the investigations carried on in cooperation with States 

and other Federal agencies deal with the amounts of matter in solution and in suspension in streams.

The records of chemical analysis, suspended sediment, and 

temperature for surface waters given in this volume serve as a 

basis for determining the suitability of the waters examined for 

industrial, agricultural, and domestic uses insofar as such use is 

affected by the dissolved or suspended mineral matter in the waters. The discharge of a stream and, to a lesser extent, the chemical quality are related to variations in rainfall and other forms 

of precipitation. In general, lower concentrations of dissolved 

solids may be expected during the periods of high flow than during 

periods of low flow. The concentration in some streams may change 

materially with relatively small variations in flow, whereas for 

other streams the quality may remain relatively uniform throughout large ranges in discharge. The quantities of suspended sediment carried by streams are also related to discharge, and,during 

flood periods the sediment concentrations in many streams vary 

over wide ranges.

Publication of annual records of chemical analyses, suspended 

sediment,and water temperature was begun by the Geological Survey 

in 1941. The records prior to 1948 were published each year in a 

single volume for the entire country. Beginning in 1948, the records were published in two volumes, and beginning in 1950, in four 

volumes, covering the drainage basins shown in Figure 1. The 

samples for which data are given in this volume were collected 

from October 1, 1956, to September 30, 1957. The records are 

arranged by drainage basins according to Geological Survey practice in reporting records of streamflow: Stations on tributary
QUALITY OF SURFACE WATERS, 1957

This report Parts 1-4; WSP 1520 

Parts 5-6; WSP 1521 

Parts 7-8;WSP 1522

Figure 1. Map of the United States showing basins covered by the four water-supply papers on quality of surface 

waters in 1957. The shaded portion represents the section 

of the country covered by this volume; the unshaded portion 

represents the section of the country covered by other water - 

supply papers.

streams are listed between stations on the main stem in the order 

in which those tributaries enter the main stem. Descriptive statements are given for each sampling station for which regular series 

of chemical analyses, temperature observations, or sediment determinations have been made. These statements include the location of the stream-sampling station, drainage area, length of 

time for which records are available, extremes of mineralization, 

hardness, water temperature, sediment loads, and other pertinent 

data. Records of water discharge of the streams at or near the 

sampling period are included in most tables of analyses.

During the year ending September 30, 1957, 227 regular sampling stations on 145 streams for the study of the chemical character 

of surface waters were maintained by the Geological Survey in the 

area covered by this volume. Samples were collected less frequently during the year at many other points. Water temperatures 

were measured daily at 124 stations. Not all analyses of samples 

of surface water collected during the year have been included. 

Single analyses of an incomplete nature generally have been omitted. Also, analyses made of the daily samples before compositing have not been reported. The specific conductance of almost 

all daily samples was determined, and as noted in the table head-
COLLECTION AND EXAMINATION OF SAMPLES 3

ings this information is available for reference at the district offices listed under Division of Work, on page 20.

Quantities of suspended sediment are reported for 37 stations 

during the year ending September 30, 1957. The sediment samples 

were collected one or more times daily at most stations, depending 

on the rate of flow and changes in stage of the stream. Sediment 

samples were collected less frequently during the year at many 

other points. In connection with measurements of sediment discharge, sizes of sediment particles were determined at 35 of the 

stations.

Material which is transported almost in continuous contact with 

the stream bed and the material that bounces along the bed in short 

skips or leaps is termed "bedload" and is not considered in this 

report. All other undissolved fragmental material in transport is 

termed "suspended sediment" and generally constitutes the major 

part of the total sediment load. At the present time no reliable 

routine method has been developed for determining bedload .

COLLECTION AND EXAMINATION OF SAMPLES 

CHEMICAL QUALITY

Samples for chemical analyses were usually collected at or near 

points on streams where gaging stations are maintained for measurement of water discharge. Two methods of compositing water 

samples for analysis are used by the Geological Survey: (1) Equal 

volume method Three composite samples were usually prepared 

each month by mixing together equal volumes of daily samples collected from the 1st to the 10th, from the llth to the 20th, and from 

the 21st to the end of the month. Composite samples were prepared for shorter periods if the specific conductance of the daily 

samples indicated that the mineral content of the water had changed 

significantly. Conversely, composite samples were occasionally 

prepared for longer periods if the specific conductance of the daily 

samples indicated that the mineral content had remained nearly 

uniform. (2) Discharge method Composite samples were prepared by mixing together a volume from each sample in proportion 

to the product of the rate of water discharge at the time of sampling and the time interval represented by that sample. Generally, 

each daily sample is assumed to represent an equal time interval; 

therefore, the volume from each sample is proportional only to the 

water discharge at the time of sampling.. Compositing samples by 

the discharge method was limited to some streams west of the 

Mississippi River.

The samples were analyzed according to methods regularly used 

by the Geological Survey. These methods are essentially the same 

as, or are modifications of, methods described in recognized authoritative publications for the mineral analysis of water samples 

(Collins, 1928; Am. Public Health Assoc., 1955).
QUALITY OF SURFACE WATERS, 1957

TEMPERATURE

Daily water temperatures were measured at most of the stations when chemical quality or sediment samples were collected. 

So far as practicable, the water temperatures were taken at about 

the same time each day for an individual station in order that the 

data would be relatively unaffected by diurnal variations in temperature. Most large, swiftly flowing streams probably have a 

small diurnal variation in water temperature, whereas sluggish 

or shallow streams may have a daily range of several degrees and 

may follow closely the changes in air temperature. The thermometers used for determining water temperature were accurate to 

plus or minus 0.5°F.

At stations where thermographs are located, the records consist of maximum and minimum temperatures for each day, and the 

monthly averages of maximum daily and minimum daily temperatures .

SEDIMENT

In general, suspended-sediment samples were collected daily 

with U. S. depth-integrating cable-suspended samplers (U. S. Interagency, 1948, p. 70-76 and U. S. Interagency, 1952, p. 86-90) 

from a fixed sampling point at one vertical in the cross section. 

The US DH-48 hand sampler was used at many stations during periods of low flow. Depth-integrated samples were collected periodically at three or more verticals in the cross section to determine the cross-sectional distribution of the concentration of suspended sediment with respect to that at the daily sampling vertical. 

In streams where transverse distribution of sediment concentration 

ranges widely, samples were taken regularly at two or more verticals to determine the average concentration across the section. 

During periods of high flow, samples were taken two or more times 

throughout the day at many sampling stations, and during periods 

of rapidly changing flow samples were taken hourly at some stations.

Sediment concentrations were determined by filtration or evaporation of the samples as required. At many stations the daily 

mean concentration for some days was obtained by plotting the instantaneous concentrations on the original or copies of the original 

gage-height chart. The plotted concentrations, adjusted if necessary for cross-sectional distribution with respect to that at the daily 

sampling vertical, were connected or averaged by continuous curves
COLLECTION AND EXAMINATION OF SAMPLES 5

to obtain a concentration graph. This graph represented the estimated concentration at anytime and, for most periods, daily mean 

concentrations were determined from the graph. When the concentration and water discharge were changing rapidly, the day was 

often subdivided for this computation. For some periods when the 

day-to-day variation in the concentration was negligible, the data 

were not plotted, and the average concentration of the samples 

was used as the mean concentration for the day. For certain stations, when the discharge and concentrations were relatively low 

and varied only slightly from day to day, the samples for a number 

of days were composited and the mean daily concentrations and 

mean daily loads are shown.

For some periods when no samples were collected, daily loads 

of suspended sediment were estimated on the basis of water discharge, sediment concentrations observed immediately preceding 

and following the periods, and suspended-sediment loads for other 

periods of similar discharge. The estimates were further guided 

by weather conditions and sediment discharge for other stations.

In many instances where there were no observations for several days, the suspended-sediment loads for individual days are 

not estimated, because numerous factors influencing the quantities 

of transported sediment made it very difficult to make accurate 

estimates for individual days. However, estimated loads of suspended sediment for missing days in otherwise continuous period 

of sampling have been included in monthly and annual totals for 

most streams to provide a complete record. For some streams, 

samples were collected about weekly, monthly, or less frequently, 

and only rates of sediment discharge at the time of sampling are 

shown.

In addition to the records of quantities of suspended sediment 

transported, records of the particle sizes of sediment are included. 

The particle sizes of the suspended sediments for many of the stations, and the particle sizes of the bed material for some of the 

stations were determined periodically. As much of the material 

carried in suspension is finer than 0.062 mm, the pipet method 

(Kilmer and Alexander, 1949) or the bottom withdrawal tube method 

(U. S. Interagency, 1943, p. 82-90) were used in most of the analyses. For most samples, material between 1.0 mm and 0.062 mm 

was analyzed by the visual accumulation tube method (U. S. Interagency 1957). Separation of sand from the silt-clay-colloid f rac - 

tion was by sieve. For some samples all sediment coarser than 

0.062 mm was analyzed by the sieve method. For material finer 

than 0.062 mm the settling medium used was native water or distilled water to which a dispersing agent had been added. Because 

sedimentation diameters of the clay and colloidal fractions are 

often affected by the chemical character of the settling medium, 

analyses made with native water may more nearly simulate particle sizes existing in the stream. Results of analyses with dis-
6 QUALITY OF SURFACE WATERS, 1957

tilled water containing a dispersing agent approximate ultimate 

particle sizes of the finer fractions. The concentration of sediment suspension for analysis was reduced to less than 5,000 parts 

per million where necessary by means of a sample splitter, in 

order to stay within limits recommended for the bottom-withdrawal 

tube or pipet method; therefore, the concentration of sediment for 

analyses was often different from the concentration in the stream. 

The concentration at which analyses were made is indicated in the 

appropriate tables.

EXPRESSION OF RESULTS

The dissolved mineral constituents are reported in parts per 

million. A part per million is a unit weight of a constituent in a 

million unit weights of water. Equivalents per million are not given 

in this report although the expression of analyses in equivalents 

per million is sometimes preferred. An equivalent per million is 

a unit chemical combining weight of a constituent in a million unit 

weights of water. Equivalents per million are calculated by dividing the concentration in parts per million by the chemical combining weights of the individual constituents. For convenience in 

making this conversion the reciprocals of chemical combining 

weights of the most commonly reported constituents (ions) are 

given in the following table:

Constituent Factor Constituent Factor

Iron (Fe++).......... 0.0358 Carbonate (CO 3 ") ..0.0333

Iron (Fe+++)......... . 0537 Bicarbonate (HCO3 "). . 0164

Calcium (Ca++) ...... . 0499 Sulfate (SO4 ) ...... . 0208

Magnesium (Mg++) .... 0822 Chloride (Cl~)....... . 0282

Sodium (Na+) ........ . 0435 Fluoride (F~) ....... . 0526

Potassium (K+) ...... .0256 Nitrate (NO3 ~) ...... .0161

Results given in parts per million can be converted to grains 

per United States gallon by dividing by 17.12. A calculated quantity of sodium and potassium is given in some analyses and is the 

quantity of sodium needed in addition to the calcium and magnesium to balance the acid constituents.

The hardness, expressed in terms of an equivalent quantity of 

calcium carbonate (CaCO3 ), is calculated from the equivalents of 

calcium and magnesium, or is determined by direct titration. The 

hardness caused bycalciumand magnesium (and other ions if significant) equivalent to the carbonate and bicarbonate is called carbonate hardness; the hardness in excess of this quantity is called 

noncarbonate hardness.

The value usually reported as dissolved solids is the residue
EXPRESSION OF RESULTS 7

on evaporation after drying at 180°C for 1 hour. For some waters, 

particularly those containing moderately large quantities of soluble 

salts, the value reported is calculated from the quantities of the 

various determined constituents using the carbonate equivalent of 

the reported bicarbonate. The calculated sum of the constituents 

may be given instead of or in addition to the residue. In the analyses of most waters used for irrigation, the quantity of dissolved 

solids is given in tons per acre-foot as well as in parts per million.

Percent sodium is computed for those analyses where sodium 

and potassium are reported separately by dividing the equivalents 

per million of sodium by the sum of the equivalents per million of 

calcium, magnesium, sodium, and potassium and multiplying the 

quotient by 100. In analyses where sodium and potassium were 

calculated and reported as a combined value, the value reported 

for percent sodium will include the equivalent quantity of potassium. In most waters of moderate to high concentration the proportion of potassium is much smaller than that of sodium.

Specific conductance is given for most analyses and was determined by means of a conductance bridge and using a standard 

potassium chloride solution as reference. Specific conductance 

values are expressed in micromhos per centimeter at 25°C. Specific conductance in micromhos is 1 million times the reciprocal 

of specific resistance at 25° C. Specific resistance is the resistance in ohms of a column of water 1 centimeter long and 1 square 

centimeter in cross section. The discharge of the streams is 

reported in cubic feet per second (see Streamflow, p. 17) and the 

temperature in degrees Fahrenheit. Color is expressed in units 

of the platinum -cobalt scale proposed by Hazen (1892, p. 427-428). 

Hydrogen-ion concentration is expressed in terms of pH units. By 

definition the pH value of a solution is the negative logarithm of 

the concentration of gram ions of hydrogen. However, the pH meter 

that is generally used in Survey laboratories determines the activity of the hydrogen ions as distinguished from concentration.

An average of analyses for the water year is given for most 

daily sampling stations. Most of these averages are arithmetical 

or time-weighted; when analyses during a year are all on 10-day 

composites of daily samples with no missing days, the arithmetical 

and time-weighted averages are equivalent. A time-weighted average represents the composition of water that would be contained 

in a vessel or reservoir that had received equal quantities of water 

from the river each day for the water year. A discharge-weighted 

average approximates the composition of water that would be found 

in a reservoir containing all of the water passing a given station during the year after thorough mixing in the reservoir. A dischargeweighted average is computed by multiplying the discharge for the 

sampling period by the concentrations of the individual constituents 

for the corresponding period and dividing the sum of the products
8 QUALITY OF SURFACE WATERS, 1957

by the sum of the discharges. Discharge-weighted averages are 

usually lower than arithmetical averages for most streams because at times of high discharge the rivers generally have lower 

concentrations of dissolved solids.

The concentration of sediment in parts per million is computed 

as 1, 000, 000 times the ratio of the weight of sediment to the weight 

of water -sediment mixture. Daily sediment loads are expressed in 

tons per day and except for subdivided days are usually obtained by 

multiplying daily mean sediment concentration in parts per million 

by the daily mean discharge, and the appropriate conversion factor, normally 0.0027.

Particle-size analyses are expressed in percentages of material 

finer than indicated sizes in millimeters. The size classification 

used in this report is that recommended by the American Geophysical Union subcommittee on Terminology (Lane and others, 

1947, p. 937). Other data included as pertinent to the size analyses for many streams are the date of collection, the stream discharge and sediment concentration when sample was collected, the 

concentration of the suspension during analysis, and the method of 

analysis.

COMPOSITION OF SURFACE WATERS

All natural waters contain dissolved mineral matter. Water 

in contact with soils or rock, even for only a few hours, will dissolve some rock materials. The quantity of dissolved mineral 

matter in a natural water depends primarily on the type of rocks 

or soils with which the water has been in contact and the length of 

time of contact. Some streams are fed by both surface runoff and 

ground water from springs or seeps. Such streams reflect the 

chemical character of their concentrated underground sources during dry periods and are more dilute during periods of heavy rainfall. Ground water is generally more highly mineralized than surface runoff because it remains in contact with the rocks and soils 

for much longer periods. The concentration of dissolved solids in 

a river water is frequently increased by drainage from mines or 

oil fields, by the addition of industrial or municipal wastes, or-- 

in irrigated regions by drainage from irrigated lands.

The mineral constituents and physical properties of natural 

waters reported in the tables of analyses include those that have a 

practical bearing on the value of the waters for most purposes. 

The analyses generally include results for silica, iron, calcium, 

magnesium, sodium, potassium (or sodium and potassium together 

as sodium), bicarbonate, sulfate, chloride, fluoride, nitrate, boron, pH, and dissolved solids. Aluminum, manganese, color, 

acidity, oxygen consumed, and other dissolved constituents'and 

physical properties are reported for certain streams. Phenolic
COMPOSITION OF SURFACE WATERS 9

material and minor elements including strontium, chromium, nickel, copper, lead, zinc, cobalt, arsenic, cadmium, and others are 

occasionally determined for a few streams in connection with specific problems in local areas and the results are reported when appropriate . The source and significance of the different constituents 

and properties of natural waters are discussed in the following 

paragraphs.

MINERAL CONSTITUENTS IN SOLUTION 

Silica (SiO2 )

Silica is dissolved from practically all rocks. Some natural 

surface waters contain less than 5 parts per million of silica and 

a few contain more than 50 parts, but most waters contain from 

1 to 30 parts per million. Silica affects the usefulness of a water 

because it contributes to the formation of boiler scale; it usually 

is removed from feed water for high-pressure boilers. Silica also 

forms troublesome deposits on the blades of stream turbines.

Aluminum (Al)

Aluminum is generally present only in negligible quantities in 

natural waters except in areas where the waters have been in contact with the more soluble rocks of high aluminum content such as 

bauxite and certain shales. Acid waters often contain large amounts 

of aluminum. It maybe troublesome in feed waters where it tends 

to be deposited as a scale on boiler tubes.

Manganese (Mn)

Manganese is dissolved in appreciable quantities from rocks 

in some sections of the country. Waters impounded in large reservoirs may contain manganese that has been dissolved from the 

mud on the bottom of the reservoir by action of carbon dioxide 

produced by anaerobic fermentation of organic matter. Manganese 

is not regularly determined in areas where it is not present in the 

waters inappreciable amounts. It is especially objectionable in 

water used in laundry work and in textile processing. Concentrations as low as 0.2 part per million may cause a dark-brown 

or black stain on fabrics and porcelain fixtures. Appreciable quantities of manganese are often found in waters containing objectionable quantities of iron.
10 QUALITY OF SURFACE WATERS, 1957

Iron (Fe)

Iron is dissolved from many rocks and soils. On exposure to 

the air, normal basic waters that contain more than 1 partper million of iron soon become turbid with the insoluble reddish ferric 

oxide produced by oxidation. Surface waters, therefore, seldom 

contain as much as 1 part per million of dissolved iron, although 

some acid waters carry large quantities of iron in solution. Iron 

causes reddish-brown stains on white porcelain or enameled ware 

and fixtures and on fabrics washed in the water.

Calcium (Ca)

Calcium is dissolved from almost all rocks and soils, but the 

highest concentrations are usually found in waters that have been 

in contact with limestone, dolomite, and gypsum. Calcium and 

magnesium make water hard and are largely responsible for the 

formation of boiler scale. Most waters associated with granite or 

silicious sands contain less than 10 parts per million of calcium; 

waters in areas where rocks are composed of dolomite and limestone contain from 30 to 100 parts per million; and waters that 

have come in contact with deposits of gypsum may contain several 

hundred parts per million.

Magnesium (Mg)

Magnesium is dissolved from many rocks, particularly from 

dolomitic rocks. Its effect in water is similar to that of calcium. 

The magnesium in soft waters may amount to only 1 or 2 parts per 

million, but water in areas that contain large quantities of dolomite 

or other magnesium-bear ing rocks may contain from 20 to 100 

parts per million or more of magnesium.

Sodium and potassium (Na and K)

Sodium and potassium are dissolved from almost all rocks. 

Sodium is the predominant cation in some of the more highly mineralized waters found in the Western United States. Natural waters 

that contain only 3 or 4 parts per million of the two together are 

likely to carry almost as much potassium as sodium. As the total 

quantity of these constituents increases, the proportion of sodium 

becomes much greater. Moderate quantities of sodium and potassium have little effect on the usefulness of the water for most 

purposes, but waters that carry more than 50 or 100 parts per 

million of the two may require careful operation of steam boilers
COMPOSITION OF SURFACE WATERS 11

to prevent foaming. More highly mineralized waters that contain 

a large proportion of sodium salts may be unsatisfactory for irrigation.

Carbonate and bicarbonate (CO3 and HCO3 )

Bicarbonate occurs in waters largely through the action of 

carbon dioxide, which enables the water to dissolve carbonates 

of calcium and magnesium. Carbonate as such is not usually present in appreciable quantities in natural waters. The bicarbonate 

in waters that come from relatively insoluble rocks may amount to 

less than 50 parts per million; many waters from limestone contain from 200 to 400 parts per million. Bicarbonate in moderate 

concentrations in water has no effect on its value for most uses. 

Bicarbonate or carbonate is an aid in coagulation for the removal 

of suspended matter from water.

Sulfate (SO4 )

Sulfate is dissolved from many rocks and soils but in especially 

large quantities from gypsum and from beds of shale. It is formed 

also by the oxidation of sulfides of iron and is therefore present in 

considerable quantities in waters from mines. Sulfate in waters 

that contain much calcium and magnesium causes the formation of 

hard scale in steam boilers and may increase the cost of softening 

the water.

Chloride (Cl)

Chloride is dissolved from rock materials in all parts of the 

country. Surface waters in the humid regions are usually low in 

chloride content, whereas streams in arid or semiarid regions 

may contain several hundred parts per million of chloride leached 

from soils and rocks, especially where the streams receive return drainage from irrigated lands or are affected by ground-water 

inflow carrying appreciable quantities of chloride. Large quantities of chloride may affect the industrial use of water by increasing 

the corrosiveness of waters that contain large quantities of calcium and magnesium.

Fluoride (F)

Fluoride has been reported as being present in some rocks in 

about the same amount as chloride. However, the quantity of
12 QUALITY OF SURFACE WATERS, 1957

fluoride in natural surface waters is ordinarily very small compared to that of chloride. Recent investigations indicate that the 

incidence of dental caries is less when there are small amounts of 

fluoride present in the water supply than when there is none. However, excess fluoride in water is associated with the dental defect 

known as mottled enamel if the water is used for drinking by young 

children during calcification or formation of the teeth (Dean, 1936, 

p. 1269-1272). This defect becomes increasingly noticeable as the 

quantity of fluoride in water increases above 1.5 to 2.0 parts per 

million.

Nitrate (NO3 )

Nitrate in water is considered a final oxidation product of nitrogenous material and may indicate contamination by sewage or 

other organic matter. The quantities of nitrate present in surface 

waters are generally less than 5 parts per million (as NO3 ) and 

have no effect on the value of the water for ordinary uses.

It has been reported that as much as 2 parts per million of nitrate in boiler water tends to decrease inter crystalline cracking 

of boiler steel. Studies made in Illinois indicate that nitrates in 

excess of 70 parts per million (as NO3 ) may contribute to methemoglobinemia ("blue babies") (Faucett and Miller, 1946, p. 593), 

and more recent investigations conducted in Ohio show that drinking water containing nitrates in the range of 44 to 88 parts per 

million or more (as NO3 ) may cause methemoglobinemia (Waring, 

1949). In a report published by the National Research Council, 

Maxcy (1950, p. 271) concludes that a nitrate content in excess of 

44 parts per million (as NO3 ) should be regarded as unsafe for 

infant feeding.

Boron (B)

Boron in small quantities has been found essential for plant 

growth, but irrigation water containing more than 1 part per million of boron is detrimental to citrus and other boron-sensitive 

crops. Boron is reported in Survey analyses of surface waters in 

arid and semiarid regions where irrigation is practiced or contemplated, but few of the surfajce waters analyzed have harmful concentrations of boron.
COMPOSITION OF SURFACE WATERS 13

Dissolved solids

The reported quantity of dissolved solids the residue on evaporation--consists mainly of the dissolved mineral constituents in 

the water. It may also contain some organic matter and water of 

crystallization. Waters with less than 500 parts per million of dissolved solids are usually satisfactory for domestic and some industrial uses. Water containing several thousand parts per million of dissolved solids are sometimes successfully used for irrigation where practices permit the removal of soluble salts through 

the application of large volumes of water on well-drained lands, 

but generally water containing more than about 2, 000 ppm is considered to be unsuitable for long-term irrigation under average 

conditions.

PROPERTIES AND CHARACTERISTICS OF WATER 

Temperature

Large quantities of water are used in industrial operation; therefore temperature and seasonal fluctuations of that temperature are 

major considerations in planning the use of water for cooling in 

industrial plants. Water at high temperature can carry less oxygen 

in solution than at low temperature. Consequently water temperature can affect or determine the pollution characteristics of a 

stream. Temperature data are required in studies of water intended for aquatic life. A few degrees rise in temperature may 

seriously limit the capacity of a stream to support fish life.

Oxygen consumed

The amount of oxygen consumed furnishes an approximation of 

the oxidizable matter in the unfiltered and filtered samples and 

gives a partial measure of polluting materials such as sewage and 

oxidizable industrial wastes. Waters of naturally high color may 

have relatively high values for oxygen consumed, and waters that 

are not noticeably colored may contain oxidizable material.

Color

In water analysis the term "color" refers to the appearance 

of water that is free from suspended solids. Many turbid waters
14 QUALITY OF SURFACE WATERS, 1957

that appear yellow, red, or brown when viewed in the stream show 

very little color after the suspended matter has been removed. 

The yellow-to-brown color of some waters is usually caused by 

organic matter extracted from leaves, roots, and other organic 

substances in the ground. In some areas objectionable color in 

water results from industrial wastes and sewage. Clear deep water 

may appear blue as the result of a scattering of sunlight by the 

water molecules. Water for domestic use and some industrial uses 

should be free from any perceptible color. A color less than 10 

units generally passes unnoticed. Some swamp waters have natural 

color of 200 to 300 units or more.

Hydrogen-ion concentration (pH)

The degree of acidity or alkalinity of water, as indicated by 

the hydrogen-ion concentration, expressed as pH (see p.7 ), is 

related to the corrosive properties of water and is useful in determining the proper treatment for coagulation that may be necessary at water-treatment plants. A pH of 7.0 indicates that the 

water is neither acid nor alkaline. pH readings progressively lower 

than 7.0 denote increasing acidity and those progressively higher 

than 7.0 denote increasing alkalinity. The pH of most natural surface waters ranges between 6 and 8. Some alkaline surface waters 

have pH values greater than 8.0, and waters containing free mineral acid usually have pH values less than 4.5.

Specific conductance (micromhos per centimeter at 25°C)

The specific conductance of a water is a measure of its capacity to conduct a current of electricity (see p.7 ). The conductance 

varies with the concentration and degree of ionization of the different minerals in solution and with the temperature of the water. 

When considered in conjunction with results of determinations for 

other constituents, specific conductance is a useful determination 

and plays an important part in indicating changes in concentration 

of the total quantity of dissolved minerals in surface waters.

Hardness

Hardness is the characteristic of water that receives the most 

attention in industrial and domestic use. It is commonly recognized by the increased quantity of soap required to produce lather. 

The use of hard water is also objectionable because it contributes 

to the formation of scale in boilers, water heaters, radiators, and
COMPOSITION OF SURFACE WATERS 15

pipes, with the resultant decrease in rate of heat transfer, possibility of boiler failure, and loss of flow.

Hardness is caused almost entirely by compounds of calcium 

and magnesium. Other constituents--such as iron, manganese, 

aluminum, barium, strontium, and free acid also cause hardness, although they usually are not present in quantities large 

enough to have any appreciable effect. Water that has less than 

60 parts per million of hardness is usually rated as soft and suitable for many purposes without further softening. Waters with 

hardness ranging from 61 to 120 parts per million may be considered moderately hard, but this degree of hardness does not 

seriously interfere with the use of water for many purposes except for use in high-pressure steam boilers and in some industrial 

processes. Waters with hardness ranging from 121 to 200 parts 

per million are considered hard, and laundries and industries may 

profitably soften such supplies. Water with hardness above 200 

parts per million generally requires some softening before being 

used for most purposes.

Acidity

The acidity of a natural water represents the content of free 

carbon dioxide and other uncombined gases, organic acids, mineral acids and salts of strong acids and weak bases that hydrolyze 

to give hydrogen ions. Sulfatesof iron and aluminum in mine and 

industrial wastes are common sources of acidity.

Corrosiveness

The corrosiveness of a water is that property which makes the 

water aggressive to metal surfaces and frequently results in the 

appearance of the "red-water" caused by solution of iron. The disadvantages of iron in water have been discussed previously. Additionally, corrosion causes the deterioration of water pipes, steam 

boilers, and water-heating equipment. Many waters that do not 

appreciably corrode cold-water lines will aggressively attack hotwater lines. Oxygen, carbon dioxide, free acid, and acid-generating salts are the principal constituents in water that cause corrosion. In a general way, very soft waters of low mineral content 

tend to be more corrosive than hard waters containing appreciable 

quantities of carbonates and bicarbonates of calcium and magnesium.

Percent sodium

The proportion of sodium to the total cation concentration is 

termed "percent sodium", and is reported in most of the analyses
16 QUALITY OF SURFACE WATERS, 1957

of waters collected from streams in the western part of the country where irrigation is practiced extensively. The proportion of 

sodium to all the constituents in the water is explained on page 10 

under "Sodium and potassium". Waters in which the percent sodium is more than 60 may be injurious when applied to certain 

types of soils, particularly when adequate drainage is not provided 

(Magistad and Christiansen, 1944, p. 8-9).

Sodium-adsorption -ratio

Of more significance than percent sodium for use as an index 

of the sodium or alkali hazard to the soil is the sodium-adsorption - 

ratio because it relates more directly to the adsorption of sodium 

by the soil. The term, "sodium-adsorption-ratio (SAR)" was introduced by the U. S. Salinity Laboratory Staff (1954), and is a 

ratio expressing the relative activity of sodium ions in exchange 

reactions with the soil. It is expressed by the equation:

SAR= Na+

Ca+++Mg

where the concentrations of the ions are expressed in milliequivalents per liter (or equivalents per million for most irrigation 

waters) .Waters are divided into four classes with respect to sodium 

or alkali hazard: low, medium, high, and very high, depending 

upon the SAR and the specific conductance. At a conductance of 

100 micro mhos per centimeter the dividing points are at SAR values 

of 10, 18, and 26, but at 5, 000 micromhos the corresponding dividing points are SAR values of approximately 2.5, 6.5, and 11. 

Waters range in respect to sodium hazard from those which can be 

used for irrigation on almost all soils to those which are generally unsatisfactory for irrigation.

SEDIMENT

Fluvial sediment is generally regarded as that sediment which 

is transported by, suspended in, or deposited by water. Suspended 

sediment is that part of it which remains in suspension in water 

owing to the upward components of turbulent currents or by colloidal suspension. Most fluvial sediment results from the normal 

process of erosion, which in turn is part of the geologic cycle of
PUBLICATIONS 17

rock transformation. In some instances, this normal process may 

have been accelerated by agricultural practices. Sediment also 

results from a number of industrial activities. In certain sections, 

waste materials from mining, logging, oil-field, and other industrial operations introduce large quantities of suspended as well as 

dissolved material.

The quantity of sediment, transported or available for transportation, is affected by climatic conditions, form or nature of 

precipitation, plant cover, topography, and land use. An impor*- 

tant property of fluvial sediment is the fall velocity of the particles in transport. Particle sizes, as determined by various methods, represent mechanical diameters, which are related to sedimentation diameters indirectly. Sediment particles in the sandsize (larger than 0.062 mm) range do not appear to be affected by 

floeculation or dispersion resulting from the mineral constituents 

in solution. The sedimentation diameter of clay and silt particles 

in suspension may vary considerably from point to point in a stream 

or reservoir, depending on the mineral matter in solution and in 

suspension and the degree of turbulence present. The size of sediment particles in transport at any point depends on the type of erodible and soluble material in the drainage area, the degree of flocculation present, time in transport, and characteristics of the 

transporting flow. The flow characteristics include velocity of 

water, turbulence, and the depth, width, and roughness of the channel. As a result of these variable characteristics, the size of 

particles transported, as well as the total sediment load, is in 

constant adjustment with the characteristics and physical features 

of the stream and drainage area.

STREAMFLOW

Most of the records of stream discharge, used in conjunction 

with the chemical analyses and in the computation of sediment loads 

in this volume, are published in Geological Survey reports on the 

surface-water supply of the United States. The discharge reported 

for a composite sample is usually the average of daily mean discharges for the composite period. The discharges reported in the 

tables of single analyses are either daily mean discharges or discharges for the time at which samples were collected, computed 

from a stage-discharge relation or from a discharge measurement.

PUBLICATIONS

Reports giving records of chemical quality and temperatures 

of surface waters and suspended-sediment loads of streams in the
18 QUALITY OF SURFACE WATERS, 1957

area covered by this volume for the water years 1941-57, are 

listed below:

Numbers of water-supply papers containing records for 

Parts 9-14, 1941-57

Year

1941 

1942 

1943 

1944 

1945

WSP

942 

950 

970 

1022 

1030

Year

1946 

1947 

1948 

1949 

1950

WSP

1050 

1102 

1133 

1163 

1189

Year

1951 

1952 

1953 

1954 

1955

WSP

1200 

1253 

1293 

1353 

1403

Year

1956 

1957

WSP

1453 

1523

Geological Survey reports containing chemical quality, temperature, and sediment data obtained before 1941 are listed below. 

Publications dealing largely with the quality of ground-water supplies and only incidentally covering the chemical composition of 

surface waters are not included. Publications that are out of print 

are preceded by an asterisk.

PROFESSIONAL PAPER

*135. Composition of river and lake waters of the United States, 

1924.

BULLETINS

*479. The geochemical interpretation of water analyses, 1911. 

770. The data of geochemistry, 1924.

WATER-SUPPLY PAPERS

*108. Quality of water in the Susquehanna River drainage basin, 

with an introductory chapter on physiographic features, 

1904.

*161. Quality of water in the upper Ohio River basin and at Erie, 

Pa., 1906.

*193. The quality of surface waters in Minnesota, 1907.

*236. The quality of surface waters in the United States, Part 1, 

Analyses of waters east of the one hundredth meridian, 

1909. *

* 237. The quality of the surface waters of California, 1910.

*239. The quality of the surface waters of Illinois, 1910.

*273. Quality of the water supplies of Kansas, with a preliminary report on stream pollution by mine waters in southeastern Kansas, 1911.
COOPERATION 19

*274. Some stream waters of the western United States, with 

chapters on sediment carried by the Rio Grande and the 

industrial application of water analyses, 1911.

*339. Quality of the surface waters of Washington, 1914.

*363. Quality of the surface waters of Oregon, 1914.

*418. Mineral springs of Alaska, with a chapter on the chemical 

character of some surface waters of Alaska, 1917.

*596-B. Quality of water of Colorado River in 1925-26, 1928.

*596-D. Quality of water of Pecos River in Texas, 1928.

*596-E. Quality of the surface waters of New Jersey, 1928.

*636-A. Quality of water of the Colorado River in 1926-28, 1930.

*636-B. Suspended matter in the Colorado River in 1925-28, 1930.

*638-D. Quality of water of the Colorado River in 1928-30, 1932.

*839. Quality of water of the Rio Grande basin above Fort Quitman, Tex., 1938.

*889-E. Chemical character of surface waters of Georgia, 1944.

*998. Suspended sediment in the Colorado River, 1925-41, 1947. 

1048. Discharge and sediment loads in the Boise River drainage

basin, Idaho, 1939-40, 1948. 

1110-C. Quality of water of Conchas Reservoir, New Mexico,

1939-49, 1952.

Many of the reports listed are available for consultation in the 

larger public and institutional libraries. Copies of Geological 

Survey publications still in print may be purchased at a nominal 

cost from the Superintendent of Documents, Government Printing 

Office, Washington 25, D. C., who will, upon request, furnish 

lists giving prices.

COOPERATION

Assistance in collecting records for chemical - quality and 

sediment investigations was given by many municipal, State, and 

Federal agencies. The Bureau of Reclamation of the UnitedStates 

Department of the Interior furnished financial assistance for the 

operation of some stations in Arizona and Utah. Chemical-quality 

investigations in the Great Basin and Pacific slope basins inCalifornia and upper Virgin River basin in Utah and Arizona were continued in cooperation with the States of California and Utah. Investigations of sediment characteristics of the Green River near 

Palmer, Wash., were continued in cooperation with the city of 

Tacoma. Sediment investigations of the San Juan River at Bloom - 

field, N. Mex.,were continued and chemical-quality investigations 

of the San Juan River at Shiprock, N. Mex., were started in cooperation with the State of New Mexico. The Soil Conservation Service 

of the United States Department of Agriculture assisted on special
20 QUALITY OF SURFACE WATERS, 1957

sediment studies in the Gila River basin in Arizona. A sediment 

station in the Gila River basin in Arizona was operated during the 

summer months in cooperation with the Bureau of Land Management 

of the United States Department of the Interior.

In addition to the cooperative program, many of the stations 

were operated from funds appropriated directly to the Geological 

Survey for quality-of-water investigations. Starting in Arizona, 

investigations of the chemical quality and suspended-sediment loads 

in the Color ado River basin in Arizona, Colorado, New Mexico, and 

Utah have been carried on as a continuing Federal project since 1925.

DIVISION OF WORK

The quality-of-water program was conducted by the Water Re - 

sources Division of the Geological Survey, L. B. Leopold, chief 

hydraulic engineer and S. K. Love, chief, Quality of Water Branch. 

The records were collected and prepared for publication under the 

supervision of district chemists as follows: Li California, Eugene 

Brown; in Colorado and Wyoming (Colorado River basin), Nevada, 

and Utah-J. G. Connor; in Arizona and New Mexico -J. M. Stow; 

in Washington, Oregon, and Idaho - H. A. Swenson. Any additional 

information on file may be obtained by writing or visiting the responsible Quality of Water district office as listed in the following 

table.

District office Drainage basin

Geology Building Colorado River basin 

University of New Mexico (Arizona, New Mexico) 

P. O. Box 4217 

Albuquerque, N. Mex.

P. O. Box 2657 Colorado River basin 

Building 504 (Colorado, Utah, Wyoming, 

Fort Douglas and Nevada) 

Salt Lake City, Utah The Great Basin

(Utah, Nevada)

2929 Fulton Ave. The Great Basin (California) 

Sacramento 21, Calif. Pacific slope basins in

California

1001 N. E. Lloyd Blvd. Pacific slope basins in 

P. O. Box 3418 Washington and upper 

Portland 8, Oreg. Columbia River basin

Snake River basin 

Pacific slope basins in 

Oregon and lower Columbia 

River basin
QUALITY OF SURFACE WATERS, 1957 21 

LITERATURE CITED

American Public Health Association, 1955, Standard methods for 

the examination of water and sewage, 10th ed., p. 1-217.

Collins, W. D., 1928, Notes on practical water analysis: U. S. 

Geol. Survey Water-Supply Paper 596-H.

Dean, H. T., 1936, Chronic endemic dental fluorosis: Am. Med. 

Assoc. Jour., v. 107, p. 1269-1272.

Faucett, R. L. and Miller, H. C. 1946, Methemoglobinemia occuring in infants fed milk diluted with well waters of high 

nitrate content: Jour. Pediatrics, v. 29, p. 593.

Hazen, Alien, 1892, A new color standard for natural waters: Am. 

Chem. Jour., v. 12, p. 427-428.

Kilmer, V. J. and Alexander, L. T., 1949, Methods of making 

mechanical analyse's of soils: Soil Sci., v. 68, p. 15-24.

Lane, E. W., and others, 1947, Report of the Subcommittee on 

Terminology: Am. Geophys. Union Trans., v. 28, p. 937.

Magistad, O. C., and Christiansen, J. E., 1944, Saline soils, 

their nature and management: U. S. Dept. Agriculture 

Circ. 707, p. 8-9.

Maxcy, K. F., 1950, Report on the relation of nitrate concentrations 

in well waters to the occurrence of methemoglobinemia: 

Natl. Research Council, Bull. Sanitary Eng. and Environment, p. 271, App. D.

U. S. Interagency Report 6, 1952, Astudy of methods used in measurements and analysis of sediment loads in streams, the 

design of improved types of suspended sediment samplers, 

p. 86-90, U. S. Engineer Office, St. Paul, Minn.

U. S. Interagency Report 7, 1943, A study of methods used in measurement and analysis of sediment loads in streams, a study 

of new methods for size analysis of suspended sediment 

samples, p. 82-90; U. S. Engineer Office, St. Paul, Minn.

U. S. Interagency Report 8, 1948, A study of methods used in measurement and analysis of sediment loads of streams, measurement of the sediment discharge of streams, p. 70-76; 

U. S. Engineer Office, St. Paul, Minn.

U. S. Interagency Report 11, 1957, A study of methods used in 

measurement and analysis of sediment loads in streams, 

the development and calibration of the visual-accumulation 

tube, p. 1-109.

U. S. Salinity Laboratory Staff, 1954, Diagnosis and improvement 

of saline and alkali soils: U. S. Dept. Agriculture, Agriculture Handb. 60, p. 1-160.

Waring, F. H., 1949, Significance of nitrates in water supplies: 

Am. Water Works Assoc. Jour., v. 41, no. 2., p. 147-150.
CHEMICAL ANALYSES, WATER TEMPERATURES, AND 

PART 9. COLORADO RIVER BASIN

COLORADO RIVER MAIN STEM 

COLORADO RIVER AT HOT SULPHUR SPRINGS, COLO

LOCATION.--At bridge at Hot Sulphur Springs, Grand County, 1 mile downstream from gaging station w

DRAINAGE AREA. 782 square miles (above gaging station).

RECORDS AVAILABLE.--Chemical analyses: April 1947 to September 1957.

Water temperatures: April 1949 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 118 ppm Apr. 21-30; minimum, 58 ppm June 21-30.

Hardness: Maximum, 76 ppm Oct. 1-10; minimum, 28 ppm June 21-30.

Specific conductance: Maximum daily, 186 micromhos Apr. 18; minimum daily, 66 micromhos July 2.

Water temperatures: Maximum, 75°F Aug. 8; minimum, freezing point on many days during November 

EXTREMES, 1947-57. Dissolved solids (1947-50, 1952-57): Maximum, 123 ppm July 16-31, 1955; minim

Hardness (1947-50, 1952-57): Maximum, 80 ppm Aug. 1-10, 1955; minimum, 20 ppm June 21-30, 1947.

Specific conductance: Maximum daily, 202 micromhos July 31, 1952, Sept. 30, 1955; minimum daily

Water temperatures (1949-57): Maximum, 75°F Aug. 8, 1957; minimum, freezing point on many days 

REMARKS. Records of specific conductance of daily samples available in district office at Salt La

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 1-10, 1956 ..

Nov. 21-30 ......

Jan. 1-10, 1957 ..

Feb. 1-10........

Mar. 21-31 ......

Mean 

discharge 

(cfs)

47.7 

53.4 

59.2 

92.1 

86.0 

74.1

76.4 

71.8 

72.2 

72.2 

67.9 

69.9

67.9 

66.8 

67.4 

70.4 

69.8 

71.1

Silica 

(S10,)

14 

15 

14 

14 

14 

14

14 

13 

13 

12 

13 

13

12 

12 

12 

13 

13 

13

Iron 

(Fe)

0.02 

.05 

.08 

.12 

.08 

.08

.07 

.09 

.10 

.04 

.05 

.05

.04 

.10 

.11 

.07 

.09 

.08

Calcium 

(Ca)

24 

23 

22 

20 

18 

17

17 

16 

17 

16 

16 

16

16 

16 

17 

18 

18 

19

Magnesium 

(Mg)

4.1 

3.6 

2.9 

1.9 

3.2 

2.8

2.8 

2.9 

1.9 

2.3 

2.8 

2.6

2.6 

2.6 

2.5 

2.9 

2.6 

2.5

Sodium 

(Na)

8.1 

8.1 

7.8 

6.7 

6.9 

6.5

6.5 

6.2 

5.8 

6.0 

6.0 

6.0

6.0 

6.2 

7.0 

7.1 

7.2 

7.2

Potassium 

(K)

2.5 

1.8 

1.8 

1.8 

1.3 

1.3

1.0 

1.3 

1.3 

1.0 

1.0 

1.0

1.3 

1.3 

1.3 

1.5 

1.5 

1.5

Bicarbonate 

(HCO,)

104 

104 

96 

84 

78 

75

73 

69 

69 

68 

69 

68

68 

70 

70 

73 

75 

74

Sulfate 

(SO,)

7.2 

7.0 

6.9 

7.1 

6.7 

6.1

5.7 

5.6 

6.2 

5.2 

4.8 

4.9

4.5 

5.8 

5.4 

5.8 

6.6 

6.6

Chloride 

(Cl)

1.9 

1.6 

1.4 

1.4 

1.8 

1.4

1.5 

1.2 

1.5 

1.2 

1.2 

1.2

1.5 

1.8 

3.2 

3.2 

3.2 

3.6

Fluoride 

(F)

0.3 

.3 

.3 

.4 

.3 

.3

.3 

.3 

.5 

.1 

.1 

.1

.1 

.1 

.1 

.3 

.3 

.3

Nitrate 

(NO,)

0.3 

.3 

.2 

.2 

.7 

.7

.8 

.8 

1.1 

1.3 

1.8 

2.3

2 2 

l!4 

1.3 

.6 

.6 

.6

Boron 

(B)

0.03

.02 

.02

.02 

.01 

.02 

.03 

.03 

.02

.04 

.03 

.02

.02
Apr. 1-10, 1957... 

Apr. 11-20.......

Apr. 21-30.......

May 1-10.........

May 11-20........

May 21-31........

June 1-10 ., 

June 11-20 , 

June 21-30 , 

July 1-10.., 

July 11-20 , 

July 21-31.,

Aug. 1-10........

Aug. 11-20 ......

Aug. 21-31.......

Sept. 1-10 .......

Sept. 11-20.......

Sept. 21-30 ......

Weighted average

71.8

191

311

1,004

831

734

2,372

2,054

1,907

1,467

646

418

194

155

174

113

92.4

118

391

13

12

13

12

15

15

12

12

9.9

8.6

11

12

14

12

13

13

14

13

12

.09

.18

.25

.25

.13

.11

.14

.09

.12

.01

.02

.01

.01

.01

.04

.02

.05

.02

0.10

18

20

22

16

17

16

10

10

9.2

11

20

20

23

21

18

18

21

19

14

2.7

2.9

3.4

2.4

2.7

2.3

1.2

1.3

1.2

.6

.2

2.1

2.4

2.1

1.7

2.3

3.0

2.9

1.6

6.7

7.3

8.6

6.0

6.4

6.1

3 9

3.9

3.4

3.7

5.9

6.0

7.1

7.2

6.5

7.6

8.5

7.6

5.0

1.6

2.6

2.9

2.9

1.7

1.3

1.2

1.2

1.4

.8

1.7

1.3

1.3

.9

1.7

1.6

2.1

1.8

1.5

74

78

85

66

68

66

40

42

40

43

70

84

95

88

77

83

94

86

56

5.9

10

12

8.8

6.0

5.3

3.0

2.3

1.9

2.4

3.7

3 9

4.8

5.2

5.6

7.3

6.7

7.8

4.2

1.7

2.1

2.4

1.7

1.6

1.4

.5

.8

1.0

.7

1.6

1.8

1.9

1.7

.9

1.1

1.4

1.4

1.2

.4

.3

.5

.5

.5

.5

.5

.5

.5

.5

.3

.3

.0

.0

.3

.3

.3

.2

0.4

0.6

.9

1.0

1.1

.9

.7

1.0

.6

.8

1.2

1.2

1.0

.8

.8

.9

.2

.4

.6

0.9

..

0.06

-.

--

.07

--_

.06

.04_

.04

.03

--"
24 COLORADO RIVER BASIN

COLORADO RIVER MAIN STEM--Continued

COLORADO RIVER AT HOT SULPHUR SPRINGS, COLO.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement between 5:15 p. m. and 6 p. mj

Day

1

2

3

4

5

6

7

g

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Average

Oct.

58

56

57

56

56

55

54

52

52

52

51

50

49

49

50

49

49

49

45

44

43

45

45

44

37

45

45

43

41

38

37

48

Nov.

36

35

34

33

34

34

33

33

33

34

34

34

35

32

32

32

33

33

32

32

32

32

33

33

33

33

33

32

32

32

33

Dec.

33

33

33

33

33

32

32

32

32

32

33

33

33

33

32

33

32

32

32

32

32

33

32

33

33

33

33

32

33

33

33

33

Jan.

32

33

33

34

33

32

32

32

32

32

32

32

32

34

33

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

Feb.

32

32

32

32

32

32

32

32

32

32

32

32

32

34

33

32

33

34

34

34

34

34

34

34

34

34

34

~

33

Mar.

34

33

33

34

34

33

34

34

35

35

33

35

33

32

33

34

_

35

34

34

33

32

32

32

32

32

33

33

34

35

34

33

Apr.

35

35

34

34

35

34

34

35

33

34

34

35

36

38

40

44

45

44

42

44

46

44

44

44

45

45

47

48

50

50

--

40

May

50

50

50

51

50

51

51

49

50

50

49

47

49

48

45

47

47

49

45

43

45

44

47

47

49

51

51

55

55

55

54

49

June

55

55

53

55

55

55

56

54

55

51

54

53

50

52

47

45

50

55

57

57

54

53

56

58

57

56

57

57

56

58

~

54

July

60

58

60

57

58

60

58

62

61

60

63

64

63

64

67

68

66

64

66

64

68

67

67

68

69

68

69

70

72

71

70

65

Aug.

71

70

71

69

71

72

74

75

73

72

71

70

72

73

73

73

68

68

66

60

68

71

70

70

66

64

63

62

61

61

59

69

Sept.

58

64

63

62

60

58

60

60

60

60

60

61

55

56

59

58

60

56

55

50

50

54

55

55

56

54

57

58

57

60

58
EAGLE RIVER BASIN

EAGLE RIVER AT GYPSUM, COLO.

LOCATION. At bridge at Gypsum, Eagle County, about 400 feet upstream from Gypsum Creek and bridge 

stream from gaging station. « *

DRAINAGE AREA. 844 square miles above sampling station (957 square miles above gaging station bel

RECORDS AVAILABLE.--Chemical analyses: April 1947 to September 1957.

Water temperatures: April 1949 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 995 ppm Oct. 11-20; minimum, 135 ppm June 21-22, 2

Hardness: Maximum, 558 ppm Oct. 11-20; minimum, 70 ppm June 23.

Specific conductance: Maximum daily, 1,530 micromhos Oct. 20; minimum daily, 188 micromhos Jun

Water temperatures: Maximum, 68°F Aug. 22; minimum, freezing point on many days during November 

EXTREMES, 1947-57. Dissolved solids: Maximum, 1,370 ppm Aug. 11-12, 1952; minimum, 106 ppm June 

Hardness (1947-50, 1957): Maximum, 558 ppm Oct. 11-20, 1957; minimum, 70 ppm June 23, 1957.

Specific conductance: Maximum daily, 1,850 micromhos Aug. 6, 1949; minimum daily, 156 micromhos 

Water temperatures (1949-57): Maximum, 76°F Aug. 24, 1949; minimum, freezing point on many days 

REMARKS. Records of specific conductance of daily samples available in district office at Salt La

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 1-10, 1956 ..

Jan. 1-10, 1957. . .

Apr. 11-20 ......

Mean 

discharge 

(els)

118 

121 

146 

214 

208 

191

179 

187 

169 

173 

168 

174

165 

163 

175 

170 

172 

176

187 

278

Silica 

(SiO,)

13 

11

11 

11 

10 

11

11 

10 

10 

9.9 

10 

9.9

10 

10 

9.3 

9.2 

10 

10

11 

10

Iron 

(Fe)

Calcium 

(Ca)

159 

171 

156 

139 

142 

146

147 

137 

144 

138 

132 

123

122 

122 

124 

129 

129 

128

121 

109

Magnesium 

(Mg)

32 

32 

31 

27 

28 

28

27 

26 

27 

26 

26 

25

25 

25 

27 

28 

29 

28

28 

26

Sodium 

(Na)

101 

107 

102 

83 

87 

91

91 

86 

90 

85 

86 

78

91 

84 

77 

78 

79 

79

75 

59

Potassium 

(K)

4.7 

4.3 

4.3 

3.5 

3.5 

3.1

3.1 

3.0 

3.2 

3.1 

3.0 

2.9

3.2 

3.2 

3.2 

3.2 

2.8 

2. 8

2.8 

.2.8

Bicarbonate 

(HCO.)

180 

217 

186 

181 

191 

187

192 

184 

196 

186 

180 

174

169 

170 

171 

177 

176 

175

171 

162

Sulfate 

(S04)

365 

377 

351 

303 

309 

321

317 

285 

305 

297 

285 

264

272 

264 

280 

294 

296 

298

288

244

Chloride 

(Cl)

148 

155 

148 

118 

125 

132

130 

125 

128 

120 

122 

115

130 

125 

110 

108 

108 

108

100 

80

Fluoride 

(F)

Nitrate 

(NO,)

2.2 

2.2 

2.6 

2.6 

2.6 

3.1

3.1 

2.8 

2.8 

2.9 

2.3 

1.3

1.3 

1.3 

.9 

.9 

1.7 

1.6

2.0 

2.0

Boron 

(B)

0.05 

.05

.05 

.01

.05 

.04

.02
EAGLE RIVER BASIN Continued 

EAGLE RIVER AT GYPSUM, COLO.--Continu

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Apr. 21, 24-25, 

28-29, 1957 .... 

Apr. 22-23, 26-27,

May 2, 4-7, 9-10 .

May 21-22, 24-31

June 11-20....... 

June 21-22, 24-30

July 11-12, 14-20

Aug. 11-14, 16-20

Aug. 21-31 ......

Sept. 21-30 ...... 

Weighted average

Mean 

discharge 

(cfs)

329

359 

875 

1,140 

1,027 

1,037 

738

3,800 

3,200 

4,760 

3,000 

4,570 

2,780 

2,900 

1,730

1,050 

698 

660 

542 

430 

362 

318

860

Silica 

(Si02)

8.7

8.7 

8.6 

10 

9.9 

9.4 

9.1

7.4 

7.7 

6.5 

7.5 

5.9 

5.2 

7.9 

6.5

6.6 

8.1 

3.4 

8.9 

8.3 

8.6 

8.5

7.5

Iron 

(Fe)

Calcium 

(Ca)

85

68 

81 

46 

58 

51 

69

35 

36 

32

33 

33

39

50 

66

86 

96 

113 

117

53

Magnesium 

(Mg)

20

14 

15 

10 

11 

9.0 

13

4.1 

4.4 

3.4

4.1 

5.0

5.6

9.2 

12

14 

19 

19 

21

8.8

Sodium 

(Na)

45

25 

33 

11 

17 

14 

20

4.7 

6.4 

4.5 

7.3 

5.7 

8.3

13

22 

33 

2( 

40 

44 

50 

53

20

Potassium 

(K)

1.9

1.9 

2.0 

1.3 

1.5 

1.3

.9 

1.0 

1.0

.6 

.8

1.1

1.3 

1.6 

) 

1.9 

2.1 

2.5 

2.6

1.3

Bicarbonate 

(HCO,)

144

134 

147 

120 

127 

119 

134

96 

92 

77 

94 

80 

79 

117 

88

101 

128 

93 

146 

162 

177 

181

106

Sulfate 

(S04)

183

125 

146 

59 

90 

75 

105

30 

39 

35 

57 

36 

44

60

80 

108 

66 

157 

182 

214 

230

85

Chloride 

(Cl)

60

31 

42 

13 

20 

15 

24

3.6 

6.5 

5.0 

9.0 

6.8 

11 

14 

12

32 

46 

24 

57 

64 

73 

78

26

Fluoride 

(F)

0.2

-

Nitrate 

(NO,)

1.7

2.2 

.3 

.3 

.3 

.3 

.3

.4 

.9 

.8 

.1 

.6 

.7 

.6 

.3

.1 

.1 

.1 

.4 

.6 

.6 

.6

0.7

Boron 

(B)

0.10

.11 

.06

.04 

.10

"

a Calculated from determined constituents.
EAGLE RIVER BASIN 

EAGLE RIVER BASIN Continued 

EAGLE RIVER AT GYPSUM, COLO. Continued 

Temperature (°F) of water, water year October 1956 to September 1957

27

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

Average

Oct.

52

50

41

50

54

53

53

47

50

50

45

58

55

46

45

46

45

43

46

43

43

43

48

43

41

41

55

48

37

38

40

47

Nov.

36

35

40

32

33

42

44

42

47

45

47

44

38

33

32

32

37

37

32

33

32

32

33

33

35

32

33

34

34

34

36

Dec.

32

32

32

34

38

36

35

32

32

32

33

35

36

33

32

32

33

32

36

33

32

33

33

36

33

32

36

32

32

32

32

33

Jan.

32

32

32

32

33

33

32

34

32

32

33

34

35

32

32

32

32

32

32

34

32

32

32

32

32

32

32

32

32

32

32

32

Feb.

32

32

32

33

32

32

32

34

37

33

37

38

37

40

37

35

35

37

37

37

36

37

40

42

42

45

44

40

37

Mar.

45

44

45

45

48

46

40

48

46

--

46

47

45

40

49

45

50

50

_

42

50

47

45

47

44

46

50

50

55

49

46

47

Apr.

49

49

45

45

48

39

40

47

50

50

50

48

47

52

50

51

54

53

55

53

55

55

56

53

48

55

56

55

55

57

--

51

May

57

54

50

57

54

55

52

53

53

55

45

45

48

51

51

43

43

50

52

49

50

50

' 57

51

47

51

58

65

59

62

55

52

June

51

57

57

55

58

58

60

54

52

50

55

59

47

52

49

47

52

52

57

55

51

55

56

56

55

53

56

57

57

57

54

July

57

58

60

60

60

60

56

59

56

58

52

53

59

58

60

58

56

56

57

54

57

57

57

54

55

56

57

58

56

55

57

57

Aug.

57

59

58

61

62

63

59

60

58

58

59

59

59

56

59

58

58

62

57

57

57

68

58

60

60

59

59

55

60

60

55

59

Sept.

54

58

55

55

53

55

55

53

54

53

54

55

52

54

51

53

56

57

50

51

53

54

50

53

49

55

54

54

55

55

54
COLORADO RIVER MAIN STEM 

COLORADO RIVER NEAR GLENWOOD SPRINGS, COLO.

LOCATION. At Shoshone powerplant, 6 miles upstream from gaging station at Glenwood Springs, Garf

DRAINAGE AREA. 1,560 square miles (above gaging station).

RECORDS AVAILABLE.--Chemical analyses: October 1941 to September 1957.

Water temperatures: May 1949 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 629 ppm Dec. 1-5, 9-11; minimum, 140 ppm July 1-10

Hardness: Maximum, 280 ppm Nov. 21-30, Dec. 1-5, 9-11; minimum, 89 ppm July 1-10.

Specific conductance: Maximum daily, 1,370 micromhos Dec. 11; minimum daily, 200 micromhos June 

Water temperatures: Maximum, 64°F Aug. 5, 10; minimum, freezing point on many days during Novem

EXTREMES, 1941-57. Dissolved solids: Maximum, 2,030 ppm Aug. 10, 1947; minimum, 105 ppm June 1-1

Hardness: Maximum, 1,480 ppm Aug. 10, 1947; minimum, 72 ppm June 1-10, 11-20, 1942.

Specific conductance: Maximum daily, 2,260 micromhos Aug. 10, 1947; minimum daily, 153 micromho

Water temperatures (1949-57): Maximum, 71"F July 31, 1954, Aug. 19, 1955; minimum, freezing poi

REMARKS. Records of specific conductance of daily samples available in district office at Salt La

Glenwood Springs for water year October 1956 to September 1957 given in WSP 1513. No appreciab

except during periods of heavy local rains.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 1-10, 1956 ..

Oct. 21-31....... 

Nov. 1-2, 4-10...

Nov. 11-14, 16-20

Nov. 21-30 ...... 

Dec. 1-5, 9-11...

Jan. 1-10, 1957 . . 

Jan. 11-12, 17-20

Jan. 21-31.......

Feb. 21-28. ......

Mean 

discharge 

(cfs)

1,238 

1,101 

910 

908 

1,500 

813 

872 

714

627 

867 

694 

605 

740 

621 

912 

767

776 

766 

833

Silica 

(Si02)

11 

12 

12 

12 

10 

14 

13 

14

14 

12 

13 

14 

14 

13 

12 

14

14 

14 

13

Iron 

(Fe)

0.01 

.01 

.01 

.01

.02 

.02

.01 

.01 

.01 

.01 

.02 

.03 

.03 

.01

.01 

.01 

.02

Calcium 

(Ca)

55 

58 

67 

81 

51 

74 

73 

84

85 

64 

79 

82 

72 

77 

63 

69

69 

69 

68

Magnesium 

(Mg)

9.7 

11 

15 

17 

10 

17 

16 

17

17 

13 

17 

17 

14 

16 

14 

13

13 

13 

13

Sodium 

(Na)

62 

66 

74 

85 

2! 

76 

7t 

94

109 

60 

100 

108 

93 

115 

67 

88

86 

86 

80

Potassium 

(K)

2.5 

2.5 

2.5 

2.5

2.5 

2.5

2.8 

2.0 

2.6 

2.9 

2.7 

3.0 

2.4 

2.7

2.7 

2.7 

2.7

Bicarbonate 

(HCO,)

118 

123 

137 

157 

114 

156 

155 

165

166 

136 

158 

163 

149 

156 

138 

145

143 

142 

140

Sulfate 

(SO,)

87 

95 

120 

144 

78 

136 

123 

150

151 

106 

141 

144 

121 

135 

102 

118

112 

114 

118

Chloride 

(Cl)

87 

92 

105 

122 

41 

108 

115 

142

158 

85 

142 

152 

130 

168 

98 

130

127 

123 

110

Fluoride 

(F)

0.5 

.4 

.3 

.3

.3 

.3

.2 

.2 

.2 

.2 

.2 

.2 

.2 

.2

.2 

.2 

.3

Nitrate 

(NO,)

0.7 

.8 

.9 

1.5 

1.3 

1.2 

1.0 

1.5

1.9 

.9 

1.1 

1.8 

1.0 

1.4 

.8 

1.4

1.5 

1.5 

1.2

Boron 

(B)

0.37 

.20

.02 

.03 

.03 

.04 

.04 

.02 

.05

.02
Mar. 1-10, 1957..

Sept. 21-30 ......

Weighted average

833 

826

865

5,927

6,283

14,060

8,862

2,157

1,361

3,327

12

11

8.9

11

10

.02

.00

.14

.20

.01

.01

.00

.00

.00

0.07

69

68

61

65

66

42

13

15

7.5

7.5

9.5

10

12

11

7.1

80 

80

77

76

59

19

16

8.4

40

51

58

59

25

2.7 

2.7

2.8

2.4

1.7

2.6

2.6

2.6

2.9

1.8

139 

144

147

145

133

90

89

121

131

140

138

107

120 

124

131

60

52

28

27

88

100

104

110

54

111 

113

111

104

77

19

17

22

8.2

7.8

16

24

55

70

86

82

32

.3

.1

.2

.5

.5

.2

.2

.2

.2

0.4

1.2 

1.3

1.0

2.2

.6

.7

.7

.5

1.3

.03

.05

.04

.04

.06

--

4

4

a Calculated from determined constituents, 

b Not included in weighted average.
30 COLORADO RIVER BASIN 

COLORADO RIVER MAIN STEM Continued

COLORADO RIVER NEAR GLENWOOD SPRINGS, COLO.--Continued 

Temperature (°F) of water, 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

Average

Oct.

54

53

53

54

53

54

55

53

52

51

49

48

49

49

46

46

46

46

44

39

43

41

43

44

42

41

43

43

43

40

39

47

Nov.

38

35

35

35

33

35

37

38

38

38

38

36

36

33

32

32

32

32

32

32

32

32

32

32

32

32

33

33

32

32

--

34

Dec.

33

33

33

33

34

33

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

Jan.

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

Feb.

32

32

32

32

32

32

32

32

32

32

32

32

32

32

33

33

34

33

34

33

36

36

36

37

36

34

35

35

_

--

33

Mar.

37

36

36

34

34

33

35

38

38

39

37

38

37

34

36

36

36

36

38

40

43

40

37

35

39

41

43

44

45

46

47

38

Apr.

46

44

41

40

40

40

37

36

40

43

47

47

48

48

50

50

52

50

47

46

48

48

43

46

43

41

42

45

46

48

--

45

May

50

49

51

51

50

50

49

47

44

48

47

45

46

43

43

43

44

47

46

46

48

46

48

46

48

50

54

54

54

52

52

48

June

52

54

54

54

54

..

53

50

49

50

51

48

47

55

54

52

50

53

54

53

52

54

54

54

54

52

July

54

56

56

56

56

56

56

56

58

58

58

58

58

58

59

60

60

58

58

58

58

60

58

57

56

58

58

61

60

60

60

58

Aug.

61

62

63

62

64

60

63

62

63

64

63

62

62

63

62

63

62

62

62

60

..

62

61

62

62

60

60

59

57

55

55

61

Sept.

56

58

56

56

56

56

56

58

58

56

54

54

54

53

54

55

55

53

53

51

51

50

50

52

52

53

54

52

55

54
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR CAMEO, COLO.

LOCATION. At Grand Valley project diversion dam, 3.7 miles upstream from Cameo, Mesa County, 0.4 mile 

gaging station.

DRAINAGE AREA. 8,060 square miles, approximately,(above gaging station). 

RECORDS AVAILABLE.--Chemical analyses: October 1933 to September 1957.

Water temperatures: April 1949 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 956 ppm Dec. 21-31; minimum, 176 ppm July 1-10.

Specific conductance: Maximum daily, 1,650 micromhos Dec. 12; minimum daily, 244 micromhos July 3.

Water temperatures: Maximum, 69°F Aug. 15, 26; minimum, freezing point on several days during Decemb

EXTREMES, 1933-57. Dissolved solids (1933-43, 1950-57): Maximum, 1,050 ppm Dec. 21-31, 1939; minimum, 

Hardness (1933-55): Maximum, 399 ppm July 21-31, 1934; minimum, 98 ppm June 21-30, 1935.

Water temperatures (1949-57): Maximum, 75°F July 27, 1953, July 12, 29, 31, 1954, July 28, 1956; min

REMARKS. --Records of specific conductance of daily samples available in district office at Salt Lake C

1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Oct. 1-10, B56 .....

Mav 19-31 ..........

Mean 

discharge 

(cfs)

1,565 

1,500 

1,469 

1,600 

1,360 

1,248

1,265 

1,180 

1,114 

1,300 

1,310 

1,282

1,245 

1,425 

1,506 

1,363 

1,348 

1,327

1,489 

2,364 

3,752 

9,047 

10, 940 

9.237

Silica 

(Si02)

7.8 

12

10 

11

9.4 

10 -

14

14 

15

Iron 

(Fe)

Calcium 

(Ca)

75 

93

96 

82

75 

52

81

67 

51

Magnesium 

(Mg)

19 

24

22 

20

24 

45

20

10 

10

Sodium 

(Na)

127 

148

165 

159

160 

169

119

40 

34

Potassium 

(K)

4.B 

5.1

5.1

Bicarbonate 

(HCO,)

165 

192

200 

170

183 

187

188

92 

157

Carbonate 

(CO,)

Sulfate 

(SO,)

159 

191

187 

177

183 

208

Chloride 

(Cl)

180 

210

230 

219

206 

220

140

44 

33

Fluoride 

(F)

Nitrate 

(NO,)

4.1 

6.9

5.3 

5.2

5.6 

8.0

4.8

2.6 

3.0

Boron 

(B)

0.07 

.05

.08 

.06

.04 

.05

.05 

.07
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR CAMEO, COLO. Continued

Chemical analyses, in parts per million, water year October 1956 to Septemb

Date of collection

June 1-10, 1957 .....

July 1-10 ...........

July 11-20 ..........

July 21-31. ..........

Sept. 21-30 .........

Weighted average . .

Mean 

discharge 

(cfe)

23,970 

22, 520 

24,850 

25, 560 

16,220 

11,130

7,551 

5,125 

3,991 

3,364 

2,362 

2,209

5,819

Silica 

(810.)

10 

9.3

8.2

9.2 

8.9

--

Iron 

(Fe)

Calcium 

(Ca)

46 

39

40

56 

75

-

Magnesium 

(Mg)

6.6 

6.3

2.9

8.5 

17

-

Sodium 

(Na)

17 

19

21

58 

106

-

Potassium 

(K)

2.0

2.9 

3.8

-

Bicarbonate 

(HCO,)

72 

121

105

130 

173

-

Carbonate 

(CO,)

Sulfate 

(S04)

28 

36

84 

150

-

Chloride 

(Cl)

18 

21

25

74 

140

-

Fluoride 

(F)

Nitrate 

(NO,)

2.1 

1.8

1.5

2.7 

2.3

--

Boron 

(B)

0.05 

.06

.06 

.06

-

a Calculated from determined constituents.
COLORADO RIVER MAIN STEM 33

COLORADO RIVER MAIN STEM Continued

COLORADO RIVER NEAR CAMEO, COLO. Continued

Temperature (*F) of water, 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

Average

Oct.

59

60

59

59

60

59

59

59

58

56

57

56

54

53

51

51

51

51

50

..

48

48

48

45

45

46

45

45

44

53

Nov.

43

39

32

34

32

37

41

42

42

42

42

41

37

36

35

36

36

33

33

33

34

34

35

35

34

--

37

Dec.

35

35

35

35

35

_

37

35

33

33

33

33

33

34

33

34

34

34

33

33

33

33

33

32

32

32

32

32

33

33

--

34

Jan.

33

33

34

34

34

33

34

34

34

33

33

34

34

34

34

34

33

33

33

33

34

33

34

34

34

34

34

34

34

33

33

34

Feb.

33

33

33

33

33

32

32

33

34

34

34

34

34

34

35

35

35

35

36

35

35

35

38

40

42

_

43

43

35

Mar.

43

43

44

41

41

40

41

42

44

46

46

44

44

40

41

44

44

44

46

47

45

40

39

41

44

45

48

49

51

51

44

Apr.

51

48

47

46

44

45

44

43

45

48

..

51

55

53

53

54

54

54

51

51

50

53

50

50

49

46

48

49

50

53

49

Hay

52

52

55

54

54

54

53

54

52

48

52

52

50

52

49

48

50

51

53

49

49

52

51

51

52

52

57

57

56

55

52

June

54

56

56

56

58

58

57

57

55

54

53

56

56

54

53

51

51

52

56

58

57

54

54

58

57

58

58

58

58

58

--

56

July

58

58

59

60

60

60

59

59

61

61

62

62

61

60

62

64

63

62

62

62

60

64

63

60

62

61

62

63

66

66

63

61

Aug.

65

66

67

67

66

65

63

66

66

67

68

68

68

69

68

68

68

67

67

66

67

66

68

67

69

67

67

65

63

61

66

Sept.

60

61

65

64

63

67

63

63

63

62

60

60

60

57

58

59

59

60

57

58

56

54

57

56

56

56

57

57

58

57

--

59
GUNNISON RIVER BASIN 

GUNNISON RIVER NEAR GRAND JUNCTION, COLO

LOCATION.--At road bridge about a half mile downstream from gaging station, 1 mile downstream from 

upstream from mouth and Grand Junction, Mesa County. 

DRAINAGE AREA. 8,020 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: October 1931 to September 1957.

Water temperatures: April 1949 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 2,190 ppm Oct. 21-31; minimum, 220 ppm July 1-10.

Hardness: Maximum, 1,050 ppm Oct. 21-31; minimum, 140 ppm June 21-30, July 1-10.

Specific conductance: Maximum daily, 2,700 micromhos Oct. 27; minimum daily, 291 micromhos June 

Water temperatures: Maximum, 74°F Aug. 13; minimum, freezing point on many days during November 

EXTREMES, 1931-57.--Dissolved solids: Maximum, 2,820 ppm Sept. 11-20, 1934; minimum, 203 ppm May 

Hardness (1931-35, 1943-57): Maximum, 1,370 ppm Sept. 1-10, 11-20, 1934; minimum, 140 ppm June 

Specific conductance (1941-56): Maximum daily, 2,730 micromhos Sept. 10, 1956; minimum daily, 2

Water temperatures (1949-56): Maximum, 85°F July 31, 1954; minimum, freezing point on many days 

REMARKS. Records of specific conductance of daily samples available in district office at Salt La

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-10, 1956 ...

Jan. 1-10, 1957 . . . 

Jan. 11-20........

Mar. 21-31 .......

Mean 

discharge 

(cfs)

539 

504 

634 

1,010 

932 

835

802 

811 

705 

825 

888 

830

815 

1,165 

977 

874 

917 

934

Silica 

(SiO.)

16 

16 

16 

22 

22 

21

20 

19 

21 

18 

19 

19

17 

16 

17 

16 

17 

16

Iron 

(Fe)

0.01

Calcium 

(Ca)

237 

224 

255 

192 

174 

167

156 

157 

168 

153 

154 

156

126 

138 

147 

121 

101 

101

Mlnesium 

(Mg)

91 

91 

101 

71 

70 

69

67 

67 

70 

65 

65 

51

68 

69 

55 

56 

58 

54

Sodium 

(Na)

233 

234 

224 

145 

138 

143

142 

142 

147 

132 

149 

129

126 

156 

133 

116 

100 

94

Potassium 

(K)

8.2 

8.2 

8.2 

7.7 

7.4 

7.4

6.3 

6.3 

6.1 

6.6 

6.7 

6.2

4.8 

7.3 

5.2 

5.5 

5.2 

4.3

Bicarbonate 

(HCO.)

197 

171 

241 

252 

246 

226

209 

221 

254 

242 

237 

227

216 

236 

204 

203 

195 

190

Sulfate 

(SO,)

1,210 

1,210 

1,220 

a 817 

a 779 

763

733 

733 

751 

679 

734 

622

642 

718 

662 

576 

516 

482

Chloride 

(CD

38 

38 

38 

20 

19 

18

20 

22 

20 

18 

20 

20

20 

22 

22 

17 

16 

15

Fluoride 

(F)

0.9

Nitrate 

(NO,)

5.5 

5.5 

5.5 

10 

9.7 

9.7

11 

10 

11 

7.9 

9.9 

10

10 

12 

8.3 

6.3 

4.2 

5.0

Boron 

(B)

0.08

.20 

.19

.17

.20 

.17 

.20
Apr. 1-14, 1957..

Apr 21-25

Apr. 26-30, May 1-3

Weighted average a

1,180

3,386

2,875

8,452

17,660

18,770

17,420

9,936

5,161

2,968

1,329

4,432

16

20

19

16

14

14

14

15

20

20

15 "

79 

47

58

79

59

61

48

46

46

57

73

77

125

165

188

69

54 

25

15

22

14

12

8.8

5.8

5.8

11

14

15

25

34

55

18

84 

32

29

49 

17

28

26

17

13

15

23

36

51

77

81

123

145

37

5.0 

3 3

2.8

4.1 

3.0

3.0

3.5

3.2

2.9

1.9

2.3

3.1

2.4

3.2

4.5

4.4

4.4

4.8

3.3

192 

148

145

171 

151

139

157

142

129

117

136

142

134

164

192

196

147

412 

148

128

225 

77

133

114

60

78

70

68

116

177

207

303

452

438

702

850

188

12 

5.5

9.0

14 

7.0

10

8.0

8.5

8.5

2.5

2.9

4.0

4.7

6.5

10

14

15

19

22

8.3 «

4.8 

3.2

4.6

4.3 

3.7

3.3

2.2

1.6

2.1

1.6

2.8

2.4

2.7

2.9

4.1

6.8

5.6

7.9

9.0

3.3

.17 

.16

"

.09

.08

.07

.13

_

.20

--

a Includes estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 19
36 COLORADO RIVER BASIN 

GUNNISON RIVER BASIN Continued 

GUNNISON RIVER NEAR GRAND JUNCTION, COLO.--Continued

Temperature (°F) of water, 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

Average

Oct.

68

64

65

64

65

65

64

63

60

61

60

59

58

59

57

58

58

56

55

56

56

52

50

49

49

51

50

49

48

47

45

57

Nov.

42

40

37

39

39

43

43

44

44

45

45

45

44

39

38

37

35

34

33

32

32

32

33

33

36

34

33

35

36

36

--

38

Dec.

37

37

35

36

38

_.

38

33

32

32

32

33

33

34

34

_

33

33

33

33

32

32

32

32

32

32

32

33

33

32

34

Jan.

33

33

33

33

34

34

33

33

33

32

32

33

32

33

33

32

32

32

32

32

32

32

32

33

33

33

34

34

32

33

33

33

Feb.

32

33

33

32

32

32

32

33

33

33

33

33

34

34

34

34

34

35

37

39

44

44

45

46

48

47

45

45

37

Mar.

45

46

45

44

41

44

48

49

47

48

49

49

47

45

49

46

47

49

50

52

50

44

42

42

44

49

50

52

50

51

52

46

Apr.

49

48

48

45

50

49

49

49

51

53

55

53

53

52

54

54

53

51

50

50

49

47

46

49

50

49

51

55

53

54

51

May

58

59

58

56

53

53

53

52

50

52

52

51

51

53

52

52

52

53

54

50

50

51

52

51

53

53

52

55

57

51

51

53

June

55

56

59

59

60

59

58

58

59

56

55

59

57

56

56

56

57

58

58

62

57

60

61

62

62

64

64

63

64

63

59

July

64

64

63

66

64

64

63

64

64

64

64

63

64

64

66

65

66

66

65

65

65

68

66

67

66

66

67

67

__

_

65

Aug.

-

71

73

72

73

73

74

72

72

71

72

69

72

69

71

71

72

73

71

70

70

70

67

63

73

"

Sept.

70

69

69

68

69

69

69

67

66

66

65

65

65

65

6T

65

66

64

63

62

61

63

62

62

64

64

65

65

65

66

66
DOLORES RIVER BASIN 

DOLORES RIVER NEAR CISCO, UTAH

LOCATION. At gaging station, 9 miles upstream from mouth and 14 miles southeast of Cisco, Grand County

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1957.

Water temperatures: March 1951 to September 1957.

Sediment records: March 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 7,920 ppm Oct. 1-10; minimum, 200 ppm June 1-10.

Hardness: Maximum, 1,890 ppm Oct. 1-10; minimum, 141 ppm July 1, 7-10.

Specific conductance: Maximum daily, 12,700 micromhos Oct. 7; minimum daily, 297 micromhos June 10.

Water temperatures: Maximum, 74°F Aug. 14, 16; minimum, freezing point on several days during Decemb

Sediment concentrations: Maximum daily, 34,000 ppm Aug. 31; minimum daily, 0 ppm Oct. 2, 3, 6, 7, 19

Sediment loads: Maximum daily, 470,000 tons Aug. 31; minimum daily, 0 tons Oct. 2, 3, 6, 7, 1956, Sep

EXTREMES, 1951-52, 1953-57. Dissolved solids (1953-57): Maximum, 7,920 ppm Oct. 1-10, 1956; minimum, 

Hardness (1953-57): Maximum, 1,900 ppm Sept. 21-30, 1956; minimum, 141 ppm July 1, 7-10, 1957.

Specific conductance: Maximum daily, 12,700 micromhos Oct. 7, 1956; minimum daily, 254 micromhos May 

Water temperatures: Maximum, 81°F Sept. 1, 1953, Aug. 2, 1955, July 13, 27, 1956; minimum, freezing 

Sediment concentrations: Maximum daily, 80,500 ppm Aug. 6, 1955; minimum daily, 0 ppm Oct. 2, 3, 6, 

Sediment loads: Maximum daily, 470,000 tons Aug. 31, 1957; minimum daily, 0 tons Oct. 2, 3, 6, 7, 19

REMARKS. Records of specific conductance of daily samples available in district office at Salt Lake Ci

October 1956 to September 1957 given in WSP 1513. Flow affected by ice Nov. 20 to Dec. 4, Dec. 8 to 

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Oct. 1-10, 1956 ..... 

Oct. 11-20..........

Oct. 21-26, 29, 31...

Nov. 5, 7, 9, 13..... 

Nov. 16,19,23,26,28,

Dec. 17,19,21,26,28, 

31 ................

Jan. 2,4,7,9,11,14,

Jan. 16.............

Jan. 18, 21 .........

Jan. 23. 25 .........

Mean 

discharge 

(cfs)

18.2 

20.9 

47.5 

98.0 

115

99.3

90.0 

92.7

85.0

95.0 

95.0 

95.0 

95.0

Silica 

(SiO,)

4.9 

5.4 

8.4 

11 

8.7

9.0

11 

11

10

9.9 

9.8 

8.4 

9.4

Iron 

(Fe)

Calcium 

(Ca)

428 

368 

361 

244 

196

190

270 

196

192

161 

160 

180 

229

Magnssium 

(Mg)

199 

192 

175 

98 

86

89

121 

86

86

71 

SO 

72 

88

Sodivnn 

(Na)

2,020 

1,730 

1,510 

777 

491

753

1,090 

655

756

760 

250 

454 

972

Potassium 

(K)

111 

88 

74 

38 

28

34

51 

35

39

36 

14 

25 

59

Bicarbonate 

(HCO,)

22 

58 

123 

137 

138

170

3 

19

12

31

167 

193 

76

Carbonate 

(CO,)

Sulfate 

(SO,)

2,190 

1,920 

1,800 

1,040 

892

866

1,250 

839

869

665 

572 

703 

901

Chloride 

(Cl)

2,910 

2,530 

2,140 

1,140 

660

1,070

1,600 

940

1,100

1,140 

300 

635 

1.470

Fluoride 

(F)

Nitrate 

(NO,)

46 

26 

29 

29 

20

17

83 

75

86

37 

41 

6.6 

38

Boron 

(B)

0.38

.16 

.16

.12 

.12 

.13

.12 

.14
DOLORES RIVER BASIN Continued 

DOLORES RIVER NEAR CISCO, UTAH Continued 

Chemical analyses, In parts per million, water year October 1956 to Septembe

Date of collection

Feb. 2, 6, 8, 1957... 

Feb. 11, 13.........

Feb. 15,18,21,26.... 

Mar. 1,4,6,8,11,13, 

15 ................

Mar. 18,20,22,25,27

Apr. 15 ............

Apr. 19-30, May 1... 

May 2-10 ...........

May 11-20 ..........

June 1-10...........

July 11-16 ..........

July 17-18, 23-28.... 

July 29-31 ..........

Aug. 2-3,5,7,9-10...

Aug. 22, 24.........

Sept. 16-21, 23-25... 

Sept. 27-28, 30......

Weighted average. . .

Weighted average. . .

Mean 

discharge 

(cfs)

122 

408 

241

203 

209

382 

3,240 

2,593 

6,278 

4,537 

4,031

7,246 

5,141 

5,362 

3,288 

2,137 

1,815 

3,097

1,813 

765 

688 

602 

627 

1,277 

503 

270 

197

a2, 075

bl, 500

Silica 

(SiO.)

9.4 

9.9 

7.6

7.0 

6.3

7.8 

8.4 

8.1 

8.6 

9.9 

9.7

8.5 

8.3 

9.4 

7.5 

9.1 

9.3 

10

8.9 

8.7 

9.9 

15 

11 

10 

9.1 

8.1 

8.5

8.9

--

Iron 

(Fe)

Calcium 

(Ca)

177 

132 

165

144 

132

116 

67 

57 

52 

55 

57

50 

48 

44 

47 

53 

70 

60

72 

77 

208 

108 

162 

76 

83 

106 

120

57

--

Magne- . 

slum 

(Mg)

74 

38 

58

57 

49

36 

9.7 

9.7 

7.3 

8. 8 

9.0

5.4 

6.1 

8.0 

5.6 

9.2 

14 

9.2

12 

18 

33 

26 

33 

18 

23 

36 

58

9.9

"

Sodium 

(Na)

847 

192 

446

555 

448

283 

1 

36 

18 

21 

22

11 

15 

14 

19 

33 

74 

26

38 

90 

109 

154 

183 

54 

129 

297 

472

39

"

Potassium 

(K)

20 

12 

24

31 

28

19 

30 

4.0 

3. 8 

3.0 

3.0

2.1 

2.1 

1.7 

2.2 

2.9 

5.2 

3.7

4.6 

6.0 

8.6 

8.8 

12 

4.5 

7.1 

16 

28

3.7

"

Bicarbonate 

(HCO,)

48 

152 

136

88 

103

150 

166 

140 

136 

140 

145

134 

123 

114 

114 

122 

131 

132

129 

107 

141 

129 

131 

133 

90 

39 

77

130

"

Carbonate 

<COa)

Sulfate 

(S04)

681 

441 

591

520 

462

338 

98 

78 

60 

69 

72

41 

47 

42 

57 

84 

138 

88

136 

175 

561 

300 

438 

168 

244 

366 

480

84

--

Chloride 

(CD

1,260 

225 

625

822 

652

405 

176 

44 

20 

22 

22

12 

18 

26 

24 

41 

107 

32

48 

130 

125 

205 

280 

68 

178 

445 

720

53

"

Fluoride 

(F)

Nitrate 

(NO,)

59 

12 

44

67 

56

40 

5.8 

5.4 

2.7 

3.2 

4.8

3.7 

3.6 

3.1 

3.8 

4.3 

4.3 

1.7

3.9 

18 

27 

7.8 

19 

10 

2.4 

40 

18

5.1

"

Boron 

(B)

0.12 

.11 

.10

.08 

.04

.04 

.00

.04

.04

.04 

.07 

.08 

.10

.05 

.05

.06

"

"

a Represents 83 percent of runoff for water year October 1956 to September 19! 7.

b Includss estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 1957.
DOLORES RIVER BASIN

DOLORES RIVER BASIN Continued

DOLORES RIVER NEAR CISCO, UTAH Continued

Temperature (°F) of water, water year October 1956 to September :

39

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

2?

28

29

30

31

Average

Oct.

63

61

62

62

--

69

60

61 

62

56

58

54

51

54

50

51

53

49

47

50

49

46

46

48

43

54

Nov.

..

38

39

__

42

43

42

--

34

34

--

34

--

33

34

--

Dec.

_

33

~

..

36

32

32

_

33

32

32

32

32

33

Jan.

_

32

33

..

32

32

32

32

32

32

--

33

32

37

_

Feb.

_

32

~

32

32

35

37

39

_

43

-

45

46

Mar.

47

_.

42

"

42

47

--

47

46

44

_

46

48

_.

46

42

_

47

50

Apr.

51

47

--

..

47

"

49

_

50

48

51

50

48

47

46

_

47

49

48

50

--

May

52

53

55

55

55

54

52 

51

51

52

49

54

51

52

54

53

52

53

52

53

52

56

59

58

61

61

54

June

57

59

62

61

61

57

58

57

57

57

60

59

59

56

56

64

66

64

63

61

64

63

66

65

~

July

61

..

67

68

68

68

69

68

69

69

70

70

69

68

68

69

70

70

69

71

72

Aug.

72

72

72

69

69 

71

74

72

74

72

71

70

70

..

71

68

72

69

Sept.

..

66

65

..

69 

66

65

64

66

64

--

63

63

63

63

62

61

61

61

63

..

66

66

65

--
40 COLORADO RIVER BASIN 

DOLORES RIVER BASIN Continued 

DOLORES RIVER NEAR CISCO, UTAH Continued 

Suspended sediment, 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.

L..... 

2...... 

3...... 

4...... 

5......

6. ..... 

7. .....

&..... 

9. ..... 

10. .....

a......

12. .....

IS...... 

14. ..... 

15......

16. ..... 

17. .....

18. ..... 

19. ..... 

20. .....

21. ..... 

22. ..... 

23...... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. .....

Total.

October

Mean 

discharge 

(cfs)

14 

20 

16 

18 

20

20 

20 

18 

18 

18

21 

18 

20 

19 

18

20 

22 

23 

25 

23

25 

27 

25 

44 

37

33 

34 

35 

73 

89 

116

929

Suspended sediment

Mean 

concentration 

(ppm)

9 

0 

0 

12 

2

0 }'0

5 

- 11

160

> 202

221 

294

121 

97 

95 

94 

81 

87

Tons 

per 

day

(t) 

0 

0 

1 

a(t)

0 

0 

a(t)

(t) 

e(t)

1

elO

14

26 

29

11 

a9 

a9 

19 

a 19 

27

210

January

> 95

2,945

Ill 

146

203 

568

259 

504

5,720 

772

114 

157 

247

-

 b!65

5,115

November

Mean 

discharge 

(cfs)

102 

98 

116 

109 

106

120 

116 

120 

123 

126

123 

116 

116 

120 

120

116 

112 

102 

120

. 90

3,171

Suspended sediment

Mean 

concentration 

(ppm)

79 

83 

81 

80 

87

88 

87 

83 

81 

81

76 

64 

52 

57 

50

48 

55 

64 

85

124

136 

76 

58

--

Tons 

per 

day

a 22 

22 

a 25 

a 24 

25

a 29 

27 

a 27 

27 

a 28

a 25 

a 20 

16 

a 18 

a 16

15 

a 17 

a 18 

28

> b25

704

February

^ 110

115 

120 

140 

240 

350

474 

444 

343 

294 

261

248 

235 

228 

241 

248

241 

235 

241 

248 

235

235 

241 

228

6,435

280

549 

325

17,000 

14,000 

7,000 

4,900 

3,700

2,700 

2,600 

1,880 

1,300 

990

790 

590 

490 

480 

480

445 

380 

330

--

> b!05

170 

c!60 

123 

c 1,500 

c8,500

21,800 

a 17, 000 

6,480 

a 3, 900 

2,610

a 1,800 

a 1,600 

1,160 

a 850 

a 660

514 

a 370 

a 320 

a 320 

a 300

282 

a 250 

a 200

71,394

December

Mean 

discharge 

(cfs)

> 90 

102

112 

123 

100 

80

1-

85

2,707

Suspended sediment

Mean 

concentration 

(ppm)

82

125 

107

71

71 

86

70

110 

99

92

"

Tons 

per

day

> b20

b27

b34 

42 

b26 

16

I b!4 

« b20

641

March

223 

201 

201 

206 

196

185 

196 

185 

179 

179

179 

196 

223 

228 

223

217 

212 

201 

190 

201

196 

212 

212 

228 

223

217 

206 

212 

212 

228 

254

6,421

315 

340 

520 

650 

490

275 

230 

250 

230 

230

240 

200 

180 

220 

285

290 

350 

425 

300 

195

160 

155 

150 

180 

210

200 

170 

180 

245 

260 

390

--

190 

a 180 

a 280 

362 

a 260

137 

a 120 

125 

allO 

allO

116 

a 110 

108 

a 140 

172

a!70 

a 200 

231 

alSO 

106

a 85 

89 

a86 

allO 

126

a 120 

95 

a 100 

140 

a 160 

a 270

4,758

e Estimated.

t Less than 0.50 ton.

a Computed from estimated concentration graph.

b Computed from water-sediment discharge curve.
DOLORES RIVER BASIN 

DOLORES RIVER BASIN Continued 

DOLORES RIVER NEAR CISCO, UTAH Continued 

Suspended sediment, water year October 1956 to September 1957--Continued

41

Day

1......

2. .....

3. .....

4. .....

5. .....

6. .....

8......

fl......

10. .....

12...... 

13......

14...... 

15......

16......

17. .....

18...... 

19...... 

20......

23. ..... 

24...... 

25......

26. .....

27. .....

28. .....

SO...... 

31......

Total.

L..... 

2...... 

3...... 

4...... 

&.....

6......

&..... 

&..... ia .....

IL ..... 

12. ..... 

13. ..... 

14. ..... 

15, .....

16. .....

18. ..... 

19. ..... 

20. .....

22. ..... 

23. ..... 

24. ..... 

25, .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30...... 

31...... 

Total.

April

Mean 

discharge 

(cfs)

318 

395 

509 

454 

385

318 

310 

320 

380 

550

850 

1,050 

2,020 

2,670 

3,240

3,560 

4,510 

4,970 

4,750 

3,520

2,740 

3,010 

3,320 

2,590 

2,080

2,020 

1,730 

1,670 

1,550 

1,570

57, 359

Suspended sediment

Mean 

concentration 

(ppm)

765 

1,700 

3,060 

2,100 

1,200

730 

550 

520 

660 

1,100

1,900 

3,000 

6,600 

8,800 

11,800

12,000 

9,900 

6,000 

5,750 

4,800

3,950 

4,100 

3,900 

2,850 

2,250

2,300 

1,650 

1,700 

1,400 

1,300

-

Tons 

per 

day

657 

a 1,800 

4,210 

a 2, 600 

a 1,200

a 630 

a 460 

449 

a 680 

a 1, 600

a 4, 400 

a 8, 500 

a 36, 000 

a 63, 000 

103, 000

a 120, 000 

121,000 

a 81, 000 

73, 700 

45, 600

29,200 

33, 300 

35,000 

19,900 

12, 600

a 13, 000 

7,710 

7,670 

5,860 

5,510

840, 236

July

4,830 

4,490 

4,230 

3,810 

3,830

3,660 

3,280 

2,990 

2,650 

2,690

2,760 

2,420 

2,180 

2,060 

1,800

1,600 

1,400 

1,780 

1,620 

1,710

1,620 

1,390 

1,150 

1,440 

1,300

1,100 

2,160 

4,190 

3,660 

2,920 

2,710

79,430

2,260 

2,200 

2,100 

2,000 

2,000

2,000 

1,750 

1,400 

1,300 

1,050

1,200 

1,200 

800 

1,450 

3,900

1,100 

1,700 

700 

800 

850

790 

710 

800 

1,400 

900

1,000 

2,200 

9,050 

3,740 

3,050 

2,550

Total discharge for year (ctaTotal loads for year (tons) . . .

29,500 

a 27, 000 

a 24, 000 

a 21, 000 

a 21, 000

a 20, 000 

15, 500 

11, 300 

a 9, 300 

7,630

8,900 

7,840 

4,710 

8,060 

19,000

4,750 

6,430 

3,360 

a 3, 500 

a 3, 900

a 3, 500 

2,660 

2,480 

5,440 

3,160

2,970 

a 13, 000 

102,000 

37,000 

24,000 

18,700

471, 590

May

Mean 

discharge 

(cfs)

3,160 

4,310 

4,710 

5,350 

6,040

6,720 

6,880 

8,320 

7,550 

6,620

5,730 

6,130 

5,770 

4,590 

4,510

4,450 

4,110 

3,370 

3,090 

3,620

4,690 

4,190 

3,600 

3,430 

3,830

3,580 

3,320 

3,710 

4,250 

4,750 

4,990

149, 370

Suspended sediment

Mean 

concentration 

(ppm)

4,200 

5,820 

5,800 

5,100 

5,180

5,020 

4,200 

6,300 

5,250 

4,050

3,200 

4,000 

3,200 

2,900 

2,900

2,650 

2,200 

1,800 

1,850 

2,830

4,500 

3,250 

2,300 

1,900 

2,350

1,800 

2,000 

2,000 

2,400 

2,600 

2,000

-

Tons 

per 

day

35, 800 

67,700 

a 74, 000 

73,700 

84,500

91,100 

78,000 

a 140, 000 

107,000 

72,400

49,500 

66,200 

49,900 

a 36, 000 

35,300

31,800 

24,400 

16,400 

15,400 

27,700

57,000 

36,800 

a 22, 000 

17,900 

24, 300

17,400 

a 18, 000 

20, 000 

27, 500 

33,300 

26,900

1,477,900

August

2,360 

1,910 

1,570 

1,390 

1,260

1,370 

2,770 

2,230 

1,890 

1,480

1,230 

1,030 

914 

882 

791

717 

791 

732 

675 

688

1,170 

761 

579 

444 

404

444 

732 

850 

746 

2,270 

4,590

39, 670

2,100 

1,950 

1,100 

780 

620

780 

5,740 

7,500 

6,600 

2,000

980 

660 

500 

510 

1,480

500 

720 

1,500 

550 

2,700

9,600 

5,650 

4,000 

2,200 

800

950 

5,900 

9,800 

5,200 

25,000 

34,000

a 13, 000 

10, 100 

4,660 

a 2, 900 

2,110

a 2, 900 

s 47, 700 

a 45, 000 

33,700 

7,990

3,300 

a 1,800 

a 1,200 

1,210 

3,160

968 

1,540 

2,960 

1,000 

5,020

sa38,000 

11,600 

a 6, 300 

2,640 

873

a 1, 100 

a 12, 000 

22,500 

a 10, 000 

sa 210, 000 

sa 470, 000

977,231

June

Mean 

discharge 

(cfs)

5,240 

5,520 

6,100 

6,900 

7,820

8,550 

8,780 

8,250 

7,750 

7,550

7,330 

6,020 

5,100 

5,220 

5,300

5,240 

4,730 

3,970 

3,930 

4,570

5,560 

5,840 

5,370 

4,910 

5,050

5,260 

5,490 

5,390 

5,470 

5,280

177, 490

Suspended sediment

Mean 

concentration 

(ppm)

2,250 

2,500 

2,900 

3,200 

3,550

3,600 

3,750 

3,400 

3,350 

3,300

4,900 

1,950 

2,050 

1,650 

2,300

2,450 

2,170 

2,100 

2,000 

2,050

2,500 

2,760 

2,400 

2,000 

2,100

2,200 

2,400 

2,500 

2,400 

2,300

-

Tons 

per 

day

31,800 

37,300 

a 48, 000 

59,600 

75,000

83,100 

83,900 

75,700 

70, 100 

67,300

97,000 

31,700 

28,200 

23,300 

32,900

34,700 

27,700 

a 23, 000 

a 21, 000 

25,300

37,500 

43, 500 

34,800 

26,500 

28, 600

31,200 

35, 600 

a 36, 400 

a 35, 000 

a 33, 000

1,323,700

September

3,200 

3,010 

2,100 

1,600 

1,280

1,110 

946 

850 

746 

661

592 

529 

468 

424 

384

336 

312 

312 

271 

263

256 

256 

244 

224 

211

218 

204 

198 

193 

188

21,586

16,000 

13,000 

4,500 

2,100 

1,000

740 

500 

400 

240 

170

130 

108 

67 

70 

53

37 

28 

28 

30 

13

1

1 

2 

1 

7

8 

7 

2 

0 

0

-

a 140, 000 

a 140, 000 

25, 500 

9,070 

a 3, 500

a 2, 200 

a 1,300 

a 920 

483 

303

208 

154 

85 

80 

a 55

34 

24 

24 

22 

9

1 

al 

1 

1 

4

a5 

4 

1 

0 

0

293,989

days) ............................................................... 547, 513

........ ........................................................... 5,467,468

s Computed by subdividing day.

a Computed from estimated concentration graph.
DOLORES RIVER BASIN Continued 

DOLORES RIVER NEAR CISCO, UTAH Continued

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; D, decantation; P, pi pet'; S, si

W, in distilled water; C, chemically dispersed; M, mechanically dis

Date 

of 

Collection

Apr. 21, 1957.....

July 28. ..........

Time

3:00 p.m. 

9:45 a.m. 

10:15 a.m. 

10:15 a.m.

10:35 a.m. 

9:55 a.m. 

10:15 a.m. 

10:15 a.m.

Discharge 

(cfs)

2,710 

2,990 

5,590 

3,370

5,290 

7,540 

2,900 

4,270

Water 

temperature 

(°F)

51 

52 

49 

53

61 

57 

68 

70

Suspended sedime

Concentration 

of sample 

(ppm)

3,590 

4,130 

3,060 

1,790

2,180 

3,050 

960 

9,580

Concentration 

of suspension 

analyzed 

(ppm)

4,320 

4,170 

4,270 

3,960

4,120 

3,880 

3,130 

3,990

Percent finer th

0.002 0.004

17 

17 

20 

14

12 

19 

17 

31

0.008 0.016

27 

26 

31 

20

18 

32 

30 

55

0.03

40 

38 

41 

32

24 

45 

42 

68
COLORADO RIVER MAIN STEM

COLORADO RIVER NEAR CISCO, UTAH

LOCATION. At gaging station, 1 mile downstream from Dolores River, 11 miles south of Cisco, Grand Co

upstream from San Juan River.

DRAINAGE AREA.--24,100 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: August 1928 to September 1957.

Water temperatures: May 1949 to September 1957.

Sediment records: May 1930 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 1,680 ppm Oct. 21-31; minimum, 202 ppm July 1-10.

Hardness: Maximum, 805 ppm Oct. 21-31; minimum, 135 ppm June 21-30, July 1-10.

Specific conductance: Maximum daily, 2,580 micromhos Oct. 31; minimum daily, 311 micromhos June 11

Water temperatures: Maximum, 75°F Aug. 3, 13; minimum, freezing point on many days during November 

Sediment concentrations: Maximum daily, 21,200 ppm Aug. 31; minimum daily, 40 ppm Nov. 18,19.

Sediment loads: Maximum daily, 930,000 tons Aug. 31; minimum daily, 250 tons Nov. 18. 

EXTREMES, 1928-52. 1953-57. Dissolved solids: Maximum, 2,670 ppm Aug. 11-20, 1940; minimum, 202 ppm 

Hardness (1928-35, 1943-52, 1953-57): Maximum, 1,090 ppm Sept. 1-10, 1934; minimum, 131 ppm June 1

Specific conductance (1941-52, 1953-57): Maximum daily, 4,100 mioromhos Sept. 30, 1946; minimum da

Water temperatures (1949-52, 1953-57): Maximum, 81°F Aug. 5, 1949; minimum, freezing point on many 

Sediment concentrations (1930-52, 1953-57): Maximum daily, 66,300 ppm Oct. 27, 1952; minimum daily

Sediment loads (1930-52, 1953-57): Maximum daily, 2,790,000 tons Oct. 14, 1941; minimum daily, 72 

REMARKS. Records of specific conductance of daily samples available in district office at Salt Lake 

October 1956 to September 1957 given in WSP 1513. Flow affected by ice Dec. 21, 23-26, Jan. 1-9, 

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Oct. 1-10, 1956 .....

Oct. 21-31..........

Nov. 2, 5, 7, 9, 13.. 

Nov. 16,19,23,26,28, 

30 ................

Dec. 3, 5, 7, 9, 12.. 

Dec. 17, 19, 21, 26, 

28, 31. ............

Jan. 2, 4, 7, 9, 11, 

14, 1957...........

Jan. 16, 18, 21, 23, 

25, 28, 31.........

Feb. 4,6,8,11,13.... 

Feb. 15,18,21,26.... 

Mar. 1,4,6,8,11,13, 

15 ................

Mean 

discharge 

(cfs)

1,852 

1,874 

2,147 

3,080

2,522 

2,314 

2,258 

2,673

2,693 

2,806 

3,265

2.844

Silica 

(SiOa)

12 

12 

12 

14

14 

16 

16 

14

14 

13 

11

13

Iron 

(Fe)

Calcium 

(Ca)

192 

186 

198 

162

156 

138 

160 

140

135 

131 

115

120

Magnesium 

(Mg)

74 

74 

75 

63

60 

59 

64 

56

54 

50 

43

48

Sodium 

(Na)

221 

225 

238 

209

199 

212 

252 

234

215 

209 

180

209

Potassium 

(K)

7.0 

6.7 

8.4 

7.4

6.2 

7.0 

8.6 

8.2

6.9 

6.9 

6.1

7.1

Bicarbonate 

(HCO,)

211 

199 

218 

215

222 

166 

208 

191

201 

207 

184

198

Carbonate 

(CO,)

Sulfate 

(SO.)

822 

799 

817 

633

594 

591 

635 

541

525 

485 

453

474

Chloride 

(Cl)

175 

182 

205 

188

175 

205 

260 

248

220 

215 

152

205

Fluoride 

(F)

Nitrate 

(NO,)

15 

16 

18 

16

16 

20 

26 

25

18 

18 

14

13

B

ro

(B

0.

. 

.

.

. 

. 

. 

.

.

.
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR CISCO, UTAH Continued

Chemical analyses, in parts per million, water year October 1956 to Septemb

Date of collection

Mar. 18, 20, 22, 25-27,

Apr. 1, 3, 8, 15.....

May 11-20 ..........

June 1-10...........

June 11-20..........

July 1-10 ...........

July 11-20 ..........

Aug. 1-5, 9-10......

Aug. 6-8 ...........

Aug. 11-20. .........

Sept. 1-10 ..........

Sept. 11-20 .........

Sept. 21-30 .........

Weighted average. . .

Weighted average. . .

Mean 

discharge 

(cfs)

2,619 

4,422 

9,449 

12,410

28,080 

24, 140 

21,250 

49, 680 

46, 950

47, 500 

47, 040 

27,670 

21, 560 

15,030

15,400 

9,314 

8,052 

8,412 

3,986 

L 3,422

r a 15, 320

b 11, 720

Silica 

(SiOa)

16 

12 

12 

11

11 

15 

15 

14 

12

11 

10 

10 

11 

12

13 

13 

15 

14 

15 

14

12

12

Iron 

(Fe)

Calcium 

(Ca)

109 

99 

69 

68

50 

59 

59 

48 

45

43 

44 

56 

69 

70

130 

83 

117 

106 

122 

139

63

68

Magnesium 

(Mg)

44 

36 

17 

18

10 

12 

14 

8.0 

8.3

6.8 

6.3 

9.0 

13 

17

24 

23 

30 

29 

44 

54

15

17

Sodium 

(Na)

196 

161

55 

54

23 

31 

35 

16 

17

16 

15 

28 

37 

43

62 

66 

102 

81 

140 

169

42

53

Potassium 

(K)

6.6 

6.6 

3.6 

3 3

2.7 

2.7 

2.7 

2.1 

2.1

1.8 

2.7 

2.5 

3.2 

2.8

5.0 

3.6 

5.2 

3.9 

5.1 

6.1

2.9

3.2

Bicarbonate 

(HCO.)

174 

170 

156 

152

136 

156 

148 

139 

122

115 

120 

133 

153 

139

225 

144 

175 

170 

175 

191

141

145

Carbonate 

<COS)

Sulfate 

(S04)

434 

340 

160 

165

79 

100 

115 

52 

61

56 

52 

94 

138 

170

308 

240 

364 

330 

458 

554

138

163

Chloride 

(Cl)

195 

170 

48 

46

18 

22 

24 

12 

14

13 

12 

22 

31 

37

43 

57 

88 

58 

130 

148

35

47

Fluoride 

(F)

Nitrate 

(NO,)

11 

11 

4.2 

4.7

2.5 

1.2 

3.9 

2.7 

1.8

1.3 

1.3 

3.0 

4.3 

4.8

3.6 

4.6 

9.3 

12 

6.4 

4.7

3.8

4.6

Boron 

(B)

0.10 

. 11 

.05

.05 

.04

.05 

.07 

.05 

.07

.10 

.08

.13

--

a Represents 93 percent of runoff for water year October 1956 to September 1957. 

b Includes estimated data for missing periods. Represents 100 percent of runoff I

VU I.

ioff for water year October 1956 to September 1957.
COLORADO RIVER MAIN STEM

COLORADO RIVER MAIN STEM Continued

COLORADO RIVER NEAR CISCO, UTAH Continued

Temperature (°F) of water, water year October 1956 to September 1957

45

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

Average

Oct.

59

59

59

59

60

58

59

60

58

56

55

55

52

50

50

49

57

48

52

48

48

47

48

49

45

44

44

48

._

45

52

Nov.

_

44

_

_.

39

..

43

_

43

_

43

_

--

38

_

35

-

..

..

32

_

--

34

34

32

Dec.

_

_

33

..

33

..

36

_

32

32

.-

_

--

33

_.

33

--

32

_

_

--

32

_

32

_

_

32

Jan.

..

32

_

33

32

_

32

32

..

_

32

--

32

_

32

_

32

_

32

_

32

..

_

32

_ 

_

32

Feb.

..

..

_

32

--

32

_

32

_

34

_

33

_

32

__

34

_

--

39

_

._

_.

44

_

.-

_

_

--

Mar.

44

_

_

45

--

45

_

48

_

50

_

48

_

45

48

_

51

49

._

_

46

._

48

_

51

_

--

Apr.

53

_

52

_

--

..

._

49

_

_

_

_

54

..

51

48

48

48

_

48

47

47

46

48

48

49

50

--

May

52

53

55

56

56

56

55

53

53

51

50

51

51

53

52

52

51

52

55

51

50

51

52

53

52

55

56

59

61

59

57

June

56

56

58

59

58

59

58

58

61

55

60

59

55

56

54

53

54

56

60

60

59

58

58

60

60

61

62

62

59

--

CD 3D

July

65

61

65

66

--

64

65

63

67

67

65

69

69

70

69

67

67

70

66

65

67

67

--

69

70

68

70

70

72

67

Aug.

72

73

75

73

72

71

66

71

69

73

70

71

75

_

73

70

71

_.

74

70

73

_

69

71

71

71

74

_.

65

65

71

Sept.

66

67

64

69

66

_

71

72

69

69

67

62

67

61

61

61

60

60

59

59

58

60

57

56

57

57

65

58

58

60

--

63
COLORADO RIVER BASIN 

COLORADO RIVER MAIN STEM Continued

COLORADO RIVER NEAR CISCO, UTAH Continued 

Suspended sediment, water year October 1956 to September 1957

Day

1......

2......

3. .....

5. .....

6. .....

9. .....

10. .....

13. .....

14. .....

17. .....

19. .....

20. ..... 

21......

22......

24. .....

29. .....

30. ..... 

31. .....

Total.

1...... 

2...... 

3...... 

4...... 

5......

8...... 

9...... 

10. .....

13. ..... 

14. ..... 

15. .....

16. .....

18. ..... 

19. ..... 

20. .....

21...... 

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

October

Mean 

discharge 

(cfs)

1,740 

1,800 

1,850 

1,850 

1,880

1,930 

1,870 

1,880 

1,880 

1,840

1,850 

1,820 

1,800 

1,800 

1,840

1,900 

1,900 

1,980 

1,980 

1,870

1,760 

1,790 

1,840 

2,140 

2,140

2,270 

2,420 

2,440 

2,220 

2,190 

2,410

60, 880

Suspended sediment

Mean 

concentration 

(ppm)

125 

125 

135 

130 

135

140 

138 

130 

140 

130

118 

118 

105 

100 

115

115 

105 

112 

125 

100

80 

68 

80 

3,950 

1,700

1,100 

395 

360 

280 

190 

165

-

Tons 

per 

day

587 

608 

674 

649 

685

730 

697 

660 

711 

646

589 

580 

510 

486 

571

590 

539 

599 

668 

505

380 

329 

397 

22, 800 

9,820

6,740 

2,580 

a 2, 400 

1,680 

a 1, 100 

1,070

61, 580

January

2,320 

2,430 

2,570 

2,520 

2, 600

2,700 

2,800 

2,880 

2,820 

2,800

2,720 

2,550 

2,480 

2,750 

3,100

3,400 

3,600 

2,900 

2,500 

2,130

2,200 

2,350 

2,520 

2,630 

2,500

2,620 

2,750 

2,830 

2,720 

2,620 

2,500

82,810

313 

416

379 

224

196 

801

1,870 

409

353 

470 

383

712 

428

--

b 1, 400 

2,050 

b3,000 

2,830 

b2,800

b2,800 

2,860 

b2,300 

1,710 

b 1, 600

1,440 

b2,600 

b4,200 

5,950 

b 11, 000

17, 200 

b 3 1,000 

3,200 

b2, 500 

b2,000

2,100 

b2,600 

3,200 

b2,600 

2,580

b3,400 

b4, 500 

5,440 

b4,400 

b3,700 

2,890

141, 850

November

Mean 

discharge 

(cfs)

2,620 

2,560 

2,740 

3,360 

3,400

3,420 

3,360 

3,310 

3,080 

2,950

2,620 

2,740 

3,000 

2,870 

2,850

2,760 

2,740 

2,360 

2,410 

2,760

2,870 

2,390 

2,310 

2,410 

2,620

2,690 

2,800 

2,600 

2,490 

2,360

83, 450

Suspended sediment

Mean 

concentration 

(ppm)

190 

165 

190 

330 

330

280 

190 

240 

250 

200

160 

160 

148 

130 

120

78 

58 

40 

40 

67

70 

60 

57 

82 

98

102 

100 

86 

78 

60

-

Tons 

per 

day

a 1, 300 

1,140 

a 1, 400 

a3,000 

3,030

a 2, 600 

1,720 

a 2, 100 

2,080 

a 1, 600

a 1,100 

a 1,200 

1,200 

a 1,000 

a 920

581 

a 430 

a 250 

260 

a 500

a 540 

a 390 

356 

a 530 

a 690

741 

a 760 

604 

a 520 

382

32,924

February

2,340 

2,360 

2,420 

2,530 

2,680

2,500 

2,350 

2,330 

2,600 

2,950

3,350 

3,520 

3,320 

3,250 

3,380

3,300 

3,220 

3,200 

3,300 

3,360

3,250 

3,350 

3,480 

3,500 

3,360

3,230 

3,060 

3,020

84, 510

132

286 

135

1,910 

3,190 

3,150

1,160 

3,440

2,900

2,470 

2,000 

1,400

b850 

b860 

b880 

902 

b2,000

1,930 

b920 

849 

b2,200 

b6,000

17,300 

b 29, 000 

28, 600 

b 28, 000 

28,700

b 20, 000 

b 11, 000 

10, 000 

b 31, 000 

b 35, 000

30, 200 

b 28, 000 

b 44, 000 

b 45, 000 

a 26, 000

21,500 

a 17, 000 

a 11, 000

478, 691

December

Mean 

discharge 

(cfs)

2,270 

2,320 

2,290 

2,310 

2,270

2,370 

2,410 

2,730 

2,620 

2,220

1,900 

1,980 

2,270 

2,480 

2,870

2,550 

2,420 

2,310 

2,310 

2,190

2,120 

2,150 

2,300 

2,370 

2,200

2,070 

2,050 

2,230 

2,200 

2,280 

2,400

71,460

Suspended sediment

Mean 

concentration 

(ppm)

70 

55 

45 

63 

49

55 

52 

70 

60 

54

54 

70 

130 

200 

280

310 

327 

250 

100 

98

104 

110

104 

208

249

-

Tons 

per 

day

a 430 

a 340 

278 

a 390 

300

a 350 

338 

a 520 

424 

a 320

a 280 

374 

a 800 

a 1, 300 

a2,200

a2,100 

2,140 

a 1, 600 

624 

a 580

595 

a 640 

b760 

bBOO 

b680

581 

b500 

1,250 

b 1,200 

b 1, 400 

1,610

25, 704

March

2,890 

?, 800 

2,780 

2,890 

2,980

2,820 

2,690 

2,640 

2,580 

2,670

2,930 

3,060 

2,910 

2,930 

2,830

2,580 

2,530 

2,650 

2,690 

2,710

2,490 

2,530 

2,820 

2,950 

2,690

2,490 

2,640 

2,510 

2,620 

2,550 

2.600

84,450

625 

350 

260 

385 

400

350 

270 

170 

180 

240

320 

510 

505 

320 

260

250 

210 

250 

580 

470

400 

340 

400 

290 

245

250 

255 

190 

315 

240 

250

4,880 

a2,600 

a2,000 

3,000 

a3,200

2,660 

a 2, 000 

1,210 

a 1,300 

a 1, 700

2,530 

a4,200 

3,970 

a2,500 

1,990

a 1, 700 

a 1,400 

1,790 

a4,200 

3,440

a2,700 

2,320 

a 3, 000 

a2,300 

1,780

1,680 

1,820 

a 1,300 

2,230 

a 1,700 

a 1.800

74,900

a Computed from estimated concentration graph, 

b Computed from water-sediment discharge curve.
COLORADO RIVER MAIN STEM 

COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR CISCO, UTAH Continued 

Suspended sediment, water year October 1956 to September 1957 Continued

47

Day

1. .....

2. .....

5. .....

6. .....

7. .....

9. .....

10. .....

11......

12. ..... 

13. .....

16. .....

17. .....

18. .....

19. .....

21......

22......

25. .....

28. .....

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9. ..... 

10. .....

13...... 

14. ..... 

15. .....

16. .....

18. .....

20. .....

23. .....

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

April

Mean 

discharge 

(cfs)

3,040 

3,290 

3,720 

3,620 

3,230

2,950 

3,000 

3,100 

3,420 

3,170

3,080 

3,780 

5,000 

6,430 

7,830

8,350 

10, 700 

12, 100 

12,600 

10, 900

9,470 

9,190 

10, 600 

10, 100 

9,160

8,590 

7,960 

7,520 

7,360 

7,290

200, 550

Suspended sediment

Mean 

concentration 

(ppm)

205 

330 

680 

790 

820

700 

440 

285 

380 

260

260 

600 

1,600 

3,200 

6,300

6,400 

5,400 

5,500 

4,550 

3,470

2,380 

2,170 

2,780 

2,050 

1,730

1,420 

1,420 

1,210 

900 

810

-

Tons 

per 

day

1,680 

a 2, 900 

6,830 

a 7, 700 

7,150

a 5, 600 

a3,600 

2,400 

a 3, 500 

a 2, 200

a 2, 200 

a 6, 100 

a22,000 

a 56, 000 

133, 000

a 140, 000 

a 156, 000 

180, 000 

155, 000 

102, 000

60, 900 

53, 800 

79, 600 

55,900 

42,800

32, 900 

30,500 

24,600 

17,900 

15, 900

1, 410, 660

July

56, 900 

56, 500 

53, 400 

50, 100 

48,700

47,300 

42, 400 

38, 600 

38,700 

37,800

34, 400 

32,100 

30, 000 

28, 700 

27,500

25,900 

23,800 

22, 900 

24,500 

26, 900

25, 800 

23,300 

20,900 

20,700 

20, 500

18,900 

19, 700 

23,800 

22,100 

20, 900 

20, 600

984, 300

1,200 

1,120 

1,030 

1,050 

1,100

1,200 

1,200 

1,100 

1,120 

880

1,130 

2,700 

1,360 

1,270 

1,190

1,120 

1,160 

1,260 

2,100 

3,100

1,820 

960 

930 

1,600 

1,250

1,040 

2,000 

2,460 

1,700 

1,520 

1,300

Total discharge for year (cfsTotal load for year (tons). . . .

184, 000 

171,000 

149, 000 

142, 000 

a 140, 000

153, 000 

137,000 

115,000 

117, 000 

89,800

105, 000 

234, 000 

110,000 

98,400 

88,400

78,300 

74,500 

77,900 

139, 000 

225,000

127,000 

60,400 

52,500 

89,400 

69, 200

53, 100 

106, 000 

158, 000 

101,000 

85,800 

72,300

3,603,000

May

Mean 

discharge 

(cfs)

8,650 

10, 600 

13,400 

17, 000 

20, 400

24, 700 

27,300 

30, 100 

30, 900 

35,100

34, 900 

34,300 

29, 400 

24, 200 

21,700

21,400 

20, 600 

18,300 

17, 100 

19, 500

22, 500 

20,600 

18,900 

18,800 

19, 100

18, 500 

17, 500 

19, 100 

22, 100 

26,400 

30,200

693,250

Suspended sediment

Mean 

concentration 

(ppm)

2,130 

2,520 

2,700 

4,500 

4,950

4,730 

3,720 

3,730 

2,880 

3,300

3,320 

2,980 

2,220 

2,400 

1,820

1,430 

1,650 

1,500 

1,320 

2,550

4,670 

2, 150 

1,550 

1,600 

2,260

1,440 

1,200 

1,200 

1,700 

2,160 

2, 160

-

Tons 

per 

day

49, 700 

72, 100 

97, 700 

207, 000 

273,000

315,000 

274, 000 

303,000 

240, 000 

313,000

313,000 

276,000 

176, 000 

157, 000 

107, 000

82, 600 

91, 800 

74, 100 

60, 900 

134, 000

284, 000 

120, 000 

79, 100 

81,200 

117,000

71,900 

56, 700 

61, 900 

101,000 

154, 000 

176, 000

4,919,700

August

18, 700 

16,800 

15,300 

14, 100 

13, 500

15, 500 

14,300 

16, 400 

14, 100 

12,700

11,400 

10, 700 

10, 400 

10,200 

9,390

8,690 

8,370 

8,000 

7,300 

8,690

7,500 

7,890 

6,780 

6,490 

6,170

6,850 

7,550 

6,680 

6,660 

10, 000 

16, 000

333, 110

880 

560 

620 

510 

840

6,350 

4,500 

12,600 

4,600 

1,640

890 

1,320 

1,280 

1,000 

860

700 

750 

850 

740 

7,590

7,190 

7, 100 

3,050 

2,200 

1,000

1,300 

4,800 

3,000 

1,200 

6,880 

21.200

44, 400 

25,400 

25, 600 

19, 400 

30, 600

s 2 70, 000 

174, 000 

s 573, 000 

175, 000 

56, 200

27,400 

38, 100 

35,900 

a 28, 000 

21,800

16, 400 

16, 900 

18, 400 

14, 600 

s 200, 000

s 147, 000 

sa 160, 000 

55, 800 

38, 600 

16, 700

24, 000 

97, 800 

54, 100 

21,600 

s 23 1,000 

s 930, 000

3,587,700

June

Mean 

discharge 

(cfs)

32,700 

33, 300 

36,800 

42,600 

48,300

54, 400 

59,700 

62,400 

63,200 

63,400

62,400 

54, 600 

47,300 

47,600 

49,300

50, 400 

47,700 

40,200 

34,800 

35,200

40,800 

47,200 

45,800 

41,700 

43, 100

46,200 

50, 100 

51,400 

53, 100 

55,600

1,441,300

Suspended sediment

Mean 

concentration 

(ppm)

1,600 

1,860 

3,000 

2,770 

2,700

2,530 

2,180 

2,000 

1,720 

1,630

1,540 

1,490 

1,470 

1,420 

1,370

2,410 

1,440 

1,240 

1,520 

1,470

1,470 

1,320 

1,040 

1,230 

1,020

1,000 

1,320 

1,140 

1,270 

1,380

-

Tons 

per 

day

141,000 

167,000 

298, 000 

319,000 

352, 000

372,000 

351,000 

337,000 

294,000 

279,000

259,000 

220,000 

188, 000 

182, 000 

182, 000

328, 000 

185, 000 

135, 000 

143, 000 

140, 000

162, 000 

168, 000 

129, 000 

138, 000 

119,000

125, 000 

179, 000 

158, 000 

182, 000 

207,000

6, 439, 000

September

13, 100 

11,300 

9,920 

8,810 

8,080

7,550 

7,000 

6,420 

6,050 

5,890

5,250 

4,660 

4,210 

3,910 

3,800

3,740 

3,660 

3,610 

3,490 

3,530

3,470 

3,570 

3,590 

3,590 

3,490

3,490 

3,420 

3,270 

3,210 

3,120

158, 200

10, 400 

5,800 

2,650 

2,050 

1,700

700 

477 

430 

363 

305

197 

197 

200 

168 

140

127 

121 

107 

94 

80

72 

77 

80 

73 

50

65 

67 

53 

52 

49

368, 000 

177, 000 

71, 000 

48, 800 

37, 100

a 14, 000 

9,020 

7,450 

5,930 

4,850

2,790 

2,480 

2,270 

1,770 

1,440

1,280 

1,200 

1,040 

886 

762

675 

742 

775 

708 

471

612 

619 

468 

451 

413

765, 002

4,278,270 

21, 540, 711

s Computed by subdividing day.

a Computed from estimated concentration graph.

b Computed from water-sediment discharge curve.
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR CISCO, UTAH Continued

Particle-size analyses at suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, in 

Date 

of 

collection

Oct. 24, 1956 .... 

Oct. 24 ..........

Apr. 22, 1957....

May 12 ..........

May 31 ..........

July 25 ..........

Time

9:20a. m. 

12:40p. m. 

7:00 a.m. 

6:30 p.m. 

6:20p. m. 

5:00p.m.

6:50 p. m. 

6:40 a.m. 

7:00 a.m. 

6:50a. m. 

3:45 p.m. 

6:55p.m.

Discharge 

(cfs)

2,310 

2,310 

2,140 

9,470 

8,860 

33,900

19, 900 

29,700 

57, 800 

61,900 

33,300 

19, 800

Water 

temperature 

(°F)

48 

47 

45 

51 

59 

52

52 

57 

58 

58 

67 

67

Suspended sedim

Concentration 

of sample 

(ppm)

8,750 

16,000 

2,100 

2,110 

1,660 

2,580

1,980 

2,210 

2,040 

1,680 

983 

888

Concentration 

of suspension 

analyzed 

(ppm)

3,200 

4,840 

3,150 

3,820 

3,990 

4,290

4,050 

4,570 

3,400 

3,830 

3,320 

3,770

Percent finer t

0.002 0.004

59 

59 

67 

19 

30 

27

31 

20 

37 

42 

18 

28

0.008 0.016

93 

92 

93 

33 

41 

45

43 

32 

62 

61 

29 

42

0.0
GREEN RIVER BASIN 

GREEN RIVER NEAR GREEN RIVER, WYO.

LOCATION. At bridge on Green River-Linwood Highway, about 1 mile upstream from gaging station near 

mile downstream from Bitter Creek, 1 mile southeast of town of Green River and 4 miles upstream 

DRAINAGE AREA. 10,000 square miles, approximately, of which 300 square miles is probably noncontr

RECORDS AVAILABLE. Chemical analyses: May 1951 to September 1957.

Water temperatures: May 1951 to September 1957.

Sediment records: May 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 740 ppm Nov. 21-23; minimum, 164 ppm July 1-10.

Hardness: Maximum, 383 ppm Nov. 21-23; minimum, 114 ppm July 1-10.

Specific conductance: Maximum daily , 1,070 micromhos Nov. 21-22; minimum daily, 241 micromhos 

Water temperatures: Maximum, 75°F Aug. 9; minimum, freezing point on several days during Novemb

Sediment concentrations: Maximum daily, 1,750 ppm May 13; minimum daily, 6 ppm Sept. 30. 

Sediment loads: Maximum daily, 21,200 tons May 13; minimum daily, 8 tons on many days in January

EXTREMES, 1951-57. Dissolved solids: Maximum, 855 ppm Nov. 15-20, 1955; minimum, 159 ppm June 21

Hardness: Maximum, 420 ppm Nov. 15-20, 1955; minimum, 114 ppm July 1-10, 1954, July 1-10, 1957:

Specific conductance: Maximum daily, 1,240 micromhos Dec. 13, 1953, Nov. 19, 1955; minimum daily

Water temperatures: Maximum, 78°F July 19, Aug. 13, 1955; minimum, freezing point on many days 

Sediment concentrations: Maximum daily, 3,870 ppm Mar. 26, 1956; minimum daily, 6 ppm Jan. 21-3

Sediment loads: Maximum daily, 48,000 tons May 29, 1956; minimum daily, 6 tons Jan. 6-10, 1955.

REMARKS. Records of specific conductance of daily samples available in district office at Salt La

October 1956 to September 1957 given in WSP 1513. Flow affected by ice Nov. 25 to Feb. 19.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 2, 5, 7, 9,

Oct. 12, 14-16 ... 

Oct. 22, 25-26 . . .

Nov. 11-18 ......

Nov. 24-30 ......

Dec. 11-20. ......

Dec. 22, 25, 27, 30 

Jan. 1, 3, 5, 8, 

10, 12, 15, 1$57 

Jan. 17, 19, 22, 24, 

27. 29. 31.'.....

Mean 

discharge 

(cfs)

573 

526 

647 

545 

551 

675 

480 

442 

578

442 

431 

385

369 

357

Silica 

(SiO,)

13 

10 

15 

5.1 

15 

11 

12 

14 

14

12 

10 

10

9.6 

9.6

Iron 

(Fe)

Calcium 

(Ca)

59 

61 

59 

28 

69 

65 

83 

90 

61

69 

74 

76

73 

76

Magnesium 

(Mg)

26 

26 

25 

12 

27 

24 

40 

38 

28

29 

33 

29

29 

28

Sodium 

(Na)

59 

61 

56 

32 

59 

49 

95 

97 

53

62 

76 

65

66 

63

Potassium 

(K)

2.0 

2.0 

1.7 

4.6 

1.8 

1.6 

2.1 

1.8 

1.7

1.7 

1.7 

1.7

1.7 

1.5

Bicarbonate 

(HCOS )

182 

185 

184 

94 

221 

208 

253 

271 

193

206 

212 

222

212 

213

Sulfate 

(S0«)

212 

224 

204 

94 

212 

180 

328 

315 

205

231 

281 

241

245 

249

Chloride 

(Cl)

7.8 

8.8 

8.0 

5.5 

8.8 

7.8 

14 

13 

8.2

8.9 

10 

8.8

8.4 

8.9

Fluoride 

(F)

Nitrate 

(NO,)

0.6 

.4 

.6 

.6 

.4 

.2 

.3 

.4 

.2

.5 

.5 

.5

.7 

.6

Boron 

(B)

0.08 

.07

.09

.08 

.06

a Calculated from determined constituents.
GREEN RIVER BASIN Continued

GREEN RIVER NEAR GREEN RIVER, WYO. Continu

Chemical analyses, in parts per million, water year October 1956 to Septe

Date of collection

Feb. 2, 5, 7, 9,

12, 14, 1957.... 

Feb. 16, 19-21, 23,

Mar. 2, 5, 7, 10,

Mar. 16, 19, 21,

Apr. 21-30 ......

Sept. 21-30 ......

Weighted average

Weighted average

Mean 

discharge 

(cfs)

417 

965 

1,002

851 

918 

957 

1,152

1,830 

3,743 

3,007 

8,013 

10, 290 

5,723

7,998 

6,387 

4,519 

2,622 

1,477 

1,332

1,317 

1,035 

1,053

b 1,910

c2,048

Silica 

(Si08)

9.0 

11 

12

10 

8.7 

11 

11

14 

13 

14 

11 

9.5 

10

8.4 

10 

8.8 

7.3 

8.0 

8.1

8.9 

8.3 

9.0

10

10

Iron 

(Fe)

Calcium 

(Ca)

71 

69 

71

67 

65 

69 

67

61 

57 

56 

42 

35 

37

30 

34 

37 

36 

42 

45

46 

51 

52

44

45

Magnesium 

(Mg)

27 

23 

22

21 

20 

21 

24

21 

17 

16 

9.0 

11 

11

9.1 

11 

11 

12 

13 

16

16 

18 

19

14

14

Sodium 

(Na)

61 

63 

67

58 

54 

47 

48

38 

34 

28 

13 

14 

17

12 

16 

17 

21 

29 

36

34 

41 

41

24

27

Potassium 

(K)

1.7 

1.6 

1.8

1.7 

1.9 

2.0 

2.1

1.9 

2.2 

1.5 

1.5 

1.5 

1.5

1.2 

1.3 

1.5 

2.0 

2.0 

2.0

2.0 

2.0 

2.0

1.6

1.6

Bicarbonate 

(HCO,)

201 

190 

184

196 

193 

213 

221

215 

211 

198 

152 

146 

148

126 

144 

148 

141 

145 

154

156 

167 

170

160

163

Sulfate 

(SO,)

237 

230 

238

200 

188 

174 

170

130 

100 

86 

44 

42 

53

33 

44 

52 

67 

96 

123

117 

144 

145

80

89

Chloride 

(Cl)

8.8 

7.0 

8.8

8.8 

8.2 

7.8 

8.5

7.8 

7.1 

6.1 

3.9 

3 2 

3.5

2.4 

4.0 

4.1 

4.2 

5.1 

6.6

6.2 

7.4 

7.6

4.8

5.0

Fluoride 

(F)

Nitrate 

(NO,)

1.3 

1.1 

.9

1.2 

.2 

.1 

.4

1.8 

1.9 

1.0 

1.5 

.6 

.6

.6 

.6 

.7 

.5 

.2 

.1

.2 

.1 

.1

0.8

0.8

Boron 

(B)

0.06 

.08 

.10

.09 

.07 

.08 

.07

.07 

.07

.08 

.07

.09

--

"

P

m

b Represents 93 percent of runoff for water year October 1956 to September 1957.

c Includes estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 1957.
GREEN RIVER BASIN 

GREEN RIVER BASIN Continued 

GREEN RIVER NEAR GREEN RIVER, WYO. Continued 

Temperature (°F) of water, water year October 1956 to September 1957

51

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

Average

Oct.

56

48

49

49

52

50

52

52

50

50

46

46

43

42

40

42

42

42

44

36

39

40

44

41

38

42

43

42

38

34

36

44

Nov.

34

34

33

33

--

..

35

..

41

40

34

33

33

33

36

34

34

32

36

34

33

34

33

34

33

34

33

34

Dec.

32

33

35

33

33

_

32

32

33 /

33 '

34

33

33

32

32

_

32

34

._

33

33

_

34

34

Jan.

33

32

33

..

33

32

_

33

33

_

33

33

~

..

33

32

_

33

32

32

--

Feb.

..

32

--

32

..

33

34

~

_

34

33

34

34

33

34

34

34

34

Mar.

..

34

33

._

33

34

_

33

34

-

34

40

36

34

42

44

46

--

Apr.

42

38

41

44

44

43

41

45

50

49

44

48

52

51

51

53

51

50

48

42

43

45

42

45

43

41

42

53

54

52

46

May

56

54

58

56

60

61

58

56

54

52

53

50

51

43

49

43

54

53

53

49

43

50

49

48

54

57

61

68

63

65

65

54

June

61

63

69

70

66

65

65

64

65

61

65

60

55

56

53

50

54

57

59

62

58

57

56

59

64

62

66

66

65

69

61

July

69

68

66

67

67

69

64

67

69

67

66

66

69

68

70

70

67

68

68

63

66

67

67

68

70

71

70

67

72

73

72

68

Aug.

74

73

72

70

69

71

69

72

75

74

69

72

71

70

69

68

67

66

67

68

68

70

71

67

66

67

65

63

59

63

63

69

Sept.

59

60

56

58

57

58

66

63

54

56

52

61

53

57

58

53

53

53

54

47

54

48

50

50

58

62

56
52 COLORADO RIVER BASIN 

GREEN RIVER BASIN Continued

GREEN RIVER NEAR GREEN RIVER, WYO.--Continued 

Suspended sediment, water year October 1956 to September 1957

Day

1. .....

2. .....

3. .....

4. .....

5. .....

6. .....

7. .....

8. . . . , . 

9. .....

10. .....

11......

13. .....

17. .....

18. .....

19. .....

20. ..... 

21......

22 

23.'.'....

25. .....

29. .....

30. ..... 

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

a.....

9. ..... 

10. .....

11...... 

12. ..... 

13...... 

14. ..... 

15......

16. .....

18. ..... 

19. ..... 

20. .....

91

99

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31......

Total.

October

Mean 

discharge 

(cfs)

580 

580 

598 

598 

580

598 

607 

607 

559 

538

531 

524 

524 

524 

524

531 

538 

538 

531 

524

524 

524 

524 

760 

782

634 

580 

545 

531 

589 

580

17,707

Suspended sediment

Mean 

concentration 

(ppm)

33 

64 

40 

22

15

50 

83 

74 

55 

18

36 

14 

23 

50 

70

38 

18 

20 

40 

69

62 

37 

23 

48 

180

113 

46 

340 

182 

99 

80

-

Tons 

per 

day

a 52 

100 

a65 

36 

23

a 81 

a 140 

a 120 

83 

26

52 

20 

33 

a71 

99

54 

26 

29 

57 

a 98

88 

52 

33 

98 

380

193 

72 

500 

261 

a 160 

a 130

3,232

January

395 

390 

375 

360 

350

350 

345 

340 

340 

360

365 

365 

380 

400 

400

420 

400 

380 

390 

410

380 

370 

360 

350 

350

350 

340 

330 

320 

310 

330

11,305

17 

15 

9

9 

8

11 

15

12 

11

9 

16

10 

9 

14

"

18 

b!7 

15 

blO 

8

b8 

b8 

8 

b8 

8

blO 

11 

b!3 

b!6 

16

620 

13 

b!9 

12 

b30

b!2 

9 

bll 

15 

b!3

bll 

9 

b8 

8 

b8 

12

384

November

Mean

discharge 

(cfs)

53» 

524 

492 

440 

420

435 

634 

720 

750 

760

760 

770 

794 

794 

710

643 

492 

440 

492 

468

400 

435 

492 

538 

510

690 

635 

600 

550 

525

17,451

Suspended sediment

Mean 

concentration 

(ppm)

58 

39 

29 

29 

21

27 

56 

43 

39 

40

26 

19 

22 

20 

25

19 

16 

23 

47 

26

43 

62 

60 

70 

76

56 

37 

35 

33 

33

-

Tons 

per 

day

a 84 

a 55 

39 

34 

a 24

a 32 

a 96 

84 

a 79 

a 82

53 

40 

47 

43 

48

33 

21 

27 

62 

33

46 

73 

80 

102 

105

104 

63 

57 

49 

47

1,742

February

360 

370 

380 

380 

390

400 

400 

400 

410 

410

420 

430 

430 

500 

900

850 

800 

750 

900 

1,280

1,290 

1,140 

1,020 

1,010 

890

770 

690 

643

18,613

13 

9

11 

11

17 

,866

115

94 

180

210 

240 

455 

470 

380

300 

280 

258

--

b!3 

13 

b!3 

b!3 

9

blO 

12 

b!2 

12 

b!2

b!6 

20 

b20 

1,170 

b 1,000

264 

b200 

b!50 

228 

a 620

731 

a 740 

1,250 

a 1,300 

a 910

624 

a 520 

448

10,330

December

Mean 

discharge 

(cfs)

510 

530 

450 

435 

445

460 

460 

420 

365 

345

345 

350 

385 

425 

475

490 

485 

460 

450 

445

420 

390 

375 

365 

380

380 

380 

380 

390 

390 

390

.12,970

Suspended sediment

Mean 

concentration 

(ppm)

36 

28 

31 

27 

26

28 

20 

26 

30

28 

25 

39

20

17 

12

18 

32 

14 

20

-

Tons 

per

day

50 

40 

38 

32 

31

b35 

35 

23 

26 

28

26 

24 

40 

b32 

26

b32 

b30 

21 

b!6 

14

b!5 

19 

b40 

b60 

33

b24 

14 

b!6 

b!8 

21 

b20

879

March

740 

830 

962 

1,420 

1,180

,100 

,050 

,100 

,150 

,100

1,100 

1,050 

920 

800 

850

940 

880 

840 

820 

850

870 

810 

790 

820 

840

820 

800 

820 

780 

830 

900

28,762

210 

205 

230 

300 

140

185 

220

874 

412

170 

169

160 

91

75 

43

58

-

a 420 

459 

a 600 

a 1,200 

446

b430 

524 

b650 

bSOO 

653

b650 

2,480 

b 1,500 

890 

b700

431 

b410 

b390 

374 

b370

376 

b260 

194 

b!70 

b!80

166 

b!50 

95 

b80 

bllO 

141

16,299

a Computed from estimated concentration graph, 

b Computed from water-sediment discharge curve.
GREEN RIVER BASIN 

GREEN RIVER BASIN Continued 

GREEN RIVER NEAR GREEN RIVER, WYO.--Continued 

Suspended sediment, water year October 1956 to September 1957 Continued

53

Day

1. .....

2......

3...... 

4......

5......

6......

7. .....

8...... 

9......

10...... 

11......

U...... 

IS...... 

14...... 

15......

16......

17......

18...... 

19...... 

20......

21......

22...... 

23

24......

25......

26......

27......

28......

30...... 

31...... 

Total.

L..... 

2...... 

3...... 

4...... 

5......

6......

8...... 

9......

m .....

11......

IS...... 

14...... 

IS. .....

16......

18...... 

19...... 

20......

21...... 

22...... 

23. ..... 

24...... 

25......

28...... 

27. ..... 

28. ..... 

29...... 

30...... 

31...... 

Total.

April

Mean 

discharge 

(cfs)

1,000 

980 

950 

920 

980

902 

926 

890 

842

794

806 

854 

914 

878 

854

926 

998 

1,040 

1,140 

1,160

1,110 

1,090 

1,210 

1,230 

1,300

1,340 

1,220 

1,070 

986 

962

30, 272

Suspended sediment

Mean 

concentration 

(ppm)

998 

506 

102 

63 

118

70 

54 

39 

29 

26

29 

30 

33 

31 

31

33 

39 

42 

49 

46

40 

33 

45 

500 

320

148 

90 

50 

40 

40

--

Tons 

per 

day

2,690 

1,340 

262 

156 

312

170 

135 

94 

66 

56

63 

69 

81 

73 

71

83 

105 

118 

151 

144

120 

97 

147 

1,660 

1,120

535 

296 

144 

106 

104

10, 568

July

7,380 

8,890 

9,370 

9,370 

9,180

8,720 

7,940 

6,800 

6,370 

5,960

5,710 

5,680 

6,070 

7,120 

7,740

6,960 

6,310 

5,790 

6,100 

6,070

5,680 

5,600 

5,340 

4,980 

4,560

4,280 

3,970 

3,760 

3,530 

3,280 

3.180

191,680

256 

262 

213 

188 

157

146 

124 

92 

103 

112

108 

136 

128 

185 

227

149 

113 

100 

225 

1,150

380 

170 

130 

104 

75

73 

75 

72 

60 

53 

48

Total discharge for year (cfsTotal load for year (tons) ....

5,100 

6,290 

5,390 

4,760 

3,890

3,440 

2,660 

1,690 

1,770 

1,800

1,670 

2,090 

2,100 

3,560 

4,740

2,800 

1,930 

1,560 

3,710 

18,800

5,830 

2,570 

1,870 

1,400 

923

844 

804 

731 

572 

469 

412

96, 175

May

Mean 

discharge 

(cfs)

1,050 

1,210 

1,290 

1,440 

1,620

1,860 

2,060 

2,360 

2,540 

2,870

3,460 

3,660 

4,480 

4,680 

4,250

4,000 

3,680 

3,190 

2,870 

3,160

3,840 

3,740 

3,160 

3,060 

3,060

2,780 

2,520 

2,400 

2,440 

2,830 

3,250

88,810

Suspended sediment

Mean 

concentration 

(ppm)

55 

128 

250 

328 

290

302 

278 

316 

520 

1,050

1,030 

1,070 

1,750 

1,370 

1,020

590 

550 

325 

240 

950

850 

350 

190 

230 

305

235 

145 

145 

145 

265 

215

--

Tons 

per 

day

156 

418 

871 

1,280 

1,270

1,520 

1,550 

2,010 

3,570 

8,140

9,620 

10,600 

21,200 

17,300 

11,700

6,370 

5,460 

2,800 

1,860 

8,110

8,810 

3,530 

1,620 

1,900 

2,520

1,760 

987 

940 

955 

2,020 

1,890

142,737

August

3,060 

2,980 

2,980 

2,860 

2,740

2,720 

2,440 

2,270 

2,120 

2,050

1,860 

1,700 

1,570 

1,530 

1,470

1,400 

1,360 

1,340 

1,280 

1,260

1,220 

1,240 

1,220 

1,350 

1,220

1,170 

1,240 

1,440 

1,500 

1,470 

1,580

55,640

51 

40 

32 

30 

30

27 

28 

28 

25 

23

26 

22 

20 

19 

20

21 

23 

27 

30 

21

20 

25 

21 

44 

30

20 

20 

67 

30 

68 

58

..

421 

322 

257 

232 

222

198 

184 

172 

143 

127

131 

101 

85 

78 

79

79 

84 

98 

104 

71

66 

84 

69 

160 

99

63 

67 

260 

122 

270 

247

4,695

June

Mean 

discharge 

(cfs)

3,630 

4,330 

5,210 

6,200 

7,270

8,290 

10,000 

10,900 

11,700 

12,600

13,200 

13, 200 

12,600 

11,600 

11,400

10,900 

9,750 

7,990 

6,500 

5,720

5,300 

5,630 

6,290 

6,080 

5,510

5,230 

5,200 

5,600 

5,900 

6,490

240, 220

Suspended sediment

Mean 

concentration 

(ppm)

205 

240 

365 

600 

820

910 

780 

580 

395 

293

276 

246 

225 

182 

155

212 

202 

192 

215 

222

180 

190 

197 

155 

119

107 

107 

123 

120 

175

--

Tons 

per 

day

2,010 

2,810 

5,130 

10,000 

16, 100

20,400 

21,100 

17,100 

12,500 

9,970

9,840 

8,770 

7,650 

5,700 

4,770

6,240 

5,320 

4,140 

3,770 

3,430

2,560 

2,890 

3,350 

2,540 

1,770

1,510 

1,500 

1,860 

1,910 

3,070

199,730

September

1,660 

1,610 

1,570 

1,470 

1,340

1,250 

1,150 

1,100 

1,040 

984

970 

998 

1,010 

1,040 

1,070

1,120 

1,070 

1,030 

1,010 

1,030

1,120 

1,150 

1,120 

1,110 

1,050

1,030 

1,010 

998 

984 

956

34,050

76 

70 

55 

28 

20

16 

12 

12 

11 

10

9 

8 

15 

19 

20

17 

16 

13 

10

7

17 

55 

87 

25 

13

10 

10 

10 

10 

6

341 

304 

233 

111 

72

54 

37 

36 

31 

27

24 

22 

41 

53 

58

51 

46 

36 

27 

19

51 

171 

263 

75 

37

28 

a 27 

a 27 

a 27 

15

2,344

747,490 

489,115

a Computed from estimated concentration graph.
GREEN RIVER BASIN Continued 

GREEN RIVER NEAR GREEN RIVER, WYO. Continued

Particle-size analyses, of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; D, decantation; P, pipet; S, 

W, in distilled water; C, chemically dispersed; M, mechanically d

Date 

of 

collection

Apr. 21, 1957 ....

May 4

Mav 9

Aue. 24 ..........

Time

8:15 a.m. 

6:15 p.m. 

6:45 p.m. 

7:15 p.m. 

5:15 p. m. 

7:00 p. m. 

6:15 p.m.

11. -00a.m. 

5:15 p. m. 

6:30 p.m. 

7:30 a.m. 

11:00 a. m. 

1:30 p.m.

2:30 p.m. 

7:00 p. m. 

10:00 a. m. 

1:00 D. m.

Discharge 

(cfs)

1,140 

1,090 

1,210 

1,160 

1,380 

1,340 

1,140

1,490 

1,600 

1,810 

a 2, 540 

a 3, 460 

2,850

11,400 

8,720 

5,820 

1.520

Water 

temperature 

(°F)

43 

45 

42 

45 

43 

41 

42

56 

60 

61 

54 

53 

65

53 

67 

63 

67

Suspended sedim

Concentration 

of sample 

(ppm)

32 

17 

31 

539 

240 

108 

57

318 

266 

268 

417 

1,010 

405

160 

127 

1,170 

34

Concentration 

of suspension 

analyzed 

(ppm)

2,750 

2,410 

866

3,200 

2,630 

753 

2,640 

4,420 

5,760

1,200 

688 

3,440 

3.440

Percent finer t

0.002

55 

33

26 

13

0.004

74 

57 

62

70 

52 

42 

32 

38 

57

31 

17

54

0.008

72 

50

37 

21

0.016

96 

80 

82

88 

73 

62 

53 

60 

81

45 

26 

76

0.0

9

8

8

9

8

7

6

6

8

5

3

8

a Daily mean discharge.
GREEN RIVER BASIN Continued 

BLACKS FORK NEAR MARSTON, WYO.

LOCATION. At Bonorao Ranch, approximately 5 miles south of U. S. Highway 30, approximately 12 mi

12 miles upstream from gaging station near Green River.

DRAINAGE AREA. 3,670 square miles, approximately (above gaging station). 

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1957.

Water temperatures: March 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 2,360 ppm Sept. 21-30; minimum, 345 ppm June 1-1

Hardness: Maximum, 950 ppm Sept. 21-30; minimum, 156 ppm Apr. 23.

Specific conductance: Maximum daily, 3,180 micromhos Sept. 28; minimum daily, 479 micromhos J

Water temperatures: Maximum, 76°F July 28, Aug. 1, 13, 18; minimum, freezing point Dec. 13, J

EXTREMES, 1951-57. Dissolved solids: Maximum, 4,480 ppm Oct. 1-3, 1953; minimum, 278 ppm Feb. 

Hardness: Maximum, 1,980 ppm Feb. 1-14, 1955; minimum, 48 ppm Jan. 21-22, 26, 1953.

Specific conductance: Maximum daily, 6,010 micromhos Oct. 1, 1953; minimum daily, 414 micromh

Water temperatures: Maximum, 84°F July 15-16, 1955; minimum, freezing point on many days duri

REMARKS. Prior to Oct . 1, 1953 samples were collected at gaging station near Green River. R

available in district office in Salt Lake City, Utah. Records 'of discharge for gaging statio

Chemical analyses, in parts per million, November 1956 to 

Date of collection

Nov. 3-10, 1956.. 

Nov. 11-13 .......

Dec. 1-10 ....... 

Dec. 11,13, 15-20..

Jan. 1-10, 1957 ..

Feb. 1-5 ........

Feb. 6-10 ....... 

Feb. 11, 13-19...

Mar. 1-10 .......

Apr. 1-10 .......

Apr. 11-20 ......

Apr. 21-22, 24-30 

Aor. 23 .........

Mean 

discharge 

(cfs)

26.0 

24.0 

22.9 

19.2 

13.9 

14.5 

16.5

15.9 

12.8 

9.0 

11.2 

46.2 

208 

110 

222

212 

130 

99.3 

192 

226 

339 

434

Silica 

(SiOa)

5.3 

6.4 

8.6 

7.0 

7.7 

6.7 

9.2

9.1 

8.4 

8.8 

10 

13 

7.8 

10 

11

12 

10 

8.6 

13 

14 

11 

13

Iron 

(Fe)

0.00 

.00 

.03 

.01 

.00 

.00 

.00

.01 

.00 

.01 

.01 

.01 

.01

.04

.05 

.02 

.01 

.03 

.04 

.05

Calcium 

(Ca)

135 

125 

213 

165 

183 

164 

197

151 

152 

156 

161 

114 

73 

143 

79

87 

95 

104 

74 

82 

85

Magnesium 

(Mg)

68 

50 

88 

65 

66 

58 

68

57 

55 

54 

56 

75 

23 

52 

25

29 

34 

41 

25 

27 

26

Sodium 

(Na)

314 

172 

346 

204 

199 

194 

238

179 

168 

162 

180 

395 

121 

178 

111

114 

129 

146 

146 

118 

93 

8

Potassium 

(K)

4.3 

2.8 

4.7 

4.0 

3.7 

3.3 

3.7

3.0 

3.0 

2.6 

3.0 

4.1 

2.1 

3.2 

3.5

2.4 

4.7 

5.3 

4.7 

5.8 

4.2 

)

Bicarbonate 

(HCO,)

230 

196 

258 

288 

296 

298 

348

289 

308 

328 

356 

517 

207 

338 

199

207 

222 

248 

241 

261 

252 

202

Sulfate 

(S04 )

949 

625 

1,220 

753 

785 

689 

853

625 

593 

585 

605 

861 

303 

531 

300

312 

348 

416 

304 

262 

238 

134

Chloride 

(Cl)

96 

65 

131 

84 

78 

72 

97

70 

65 

61 

62 

86 

36 

56 

54

68 

78 

88 

74 

72 

54 

31

Fluoride 

<F)

0.4 

.4 

.6 

.4 

.4 

.4 

.5

.5 

.5 

.5 

.5 

.4 

.6 

.5 

.3

.3 

.3 

.3 

.3 

.4 

.4

Nitrate 

(NOS )

1.1 

.7 

.5 

.5 

.9 

.5 

.5

1.4 

1.4 

.8 

.5 

.5 

1.2 

.8 

2.0

1.6 

1.3 

.6 

2.0 

1.2 

1.3 

2.5

Boron 

(B)

0.3

.2

.2

.2

.1

.2

.3

.1

.1

.1

.1

.2

.1

.1

.1
GREEN RIVER BASIN Continued

BLACKS FORK NEAR MARSTON, WYO. Conti

Chemical analyses, in parts per million, November 1956 to Sept

Date of collection

May 1-2, 4, 1957. 

May 3, 5-10 .....

July 1-3, 5-6 ....

Aug. 21-29, 31...

Sept. 21-30 ......

Weighted average

Mean 

discharge 

(cfs)

322 

790 

1,237 

1,068 

2,010 

2,766 

1,231

973 

577 

367 

186 

120 

77.1 

55.0 

42.0

35.7 

14.2 

14.6

a 379

Silica 

(SiO,)

16 

16 

14 

16 

16 

14 

11

13 

13 

18 

14 

10 

10 

8.3 

9.4

9.4 

4.7 

3.3

14

Iron 

(Fe)

0.02 

.01 

.03 

.01 

.03 

.02 

.02

.02 

.01 

.02 

.01 

.01 

.02 

.01

.00 

.01 

.00

0.02

Calcium 

(Ca)

100 

63 

61 

67 

57 

61 

65

74 

99 

118 

121 

119 

142 

150 

85

127 

198 

207

72

Magnesium 

(Mg)

28 

16 

14 

16 

14 

15 

17

19 

27 

39 

48 

47 

57 

62 

25

52 

96 

106

20

Sodium 

(Na)

92 

40 

44 

53 

41 

60 

50

56 

87 

164 

196 

174 

234 

288 

177

260 

387 

397

74

Potassium 

(K)

4.2 

3.0 

2.9 

3.3 

3.0 

3.2 

3.2

2.5 

12 

4.7 

4.1 

3.6 

4.1 

4.4 

3.9

5.2 

5.5 

5.3

3.5

Bicarbonate 

(HCO,)

238 

222 

218 

230 

203 

203 

186

186 

230 

281 

239 

199 

183 

178 

156

171 

171

155

214

Sulfate 

(S04)

270 

87 

92 

122 

91 

129 

157

201 

321 

470 

590 

598 

798 

936 

495

792 

1,340 

1,430

193

Chloride 

(Cl)

61 

23 

23 

29 

21 

32 

23

22 

35 

74 

73 

60 

75 

90 

54

97 

133 

130

35

Fluorlde 

(F)

0.1 

.4 

.2 

.3 

.4 

.4 

.3

.4 

.5 

.5 

.6 

.4 

.5 

.6

.6 

.6 

.6

0.4

Nitrate 

(NO,)

0.7 

1.6 

1.8 

1.5 

1.8 

1.1 

.9

.9 

.6 

1.2 

1.2 

.7 

.9 

.8 

1.0

1.8 

.8 

.8

1.3

B

ro

(B

0.

.

.

!

.

.

a Represents 99. 6 percent of runoff for water year October 1956 to September 1957.
GREEN RIVER BASIN 

GREEN RIVER BASIN Continued 

BLACKS FORK NEAR MARSTON, WYO.--Continued 

Temperature (°F) (*F) of water November 1956 to September 1957

57

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

29

30

31

Average

Oct. Nov.

..

35

33

34

37

38

39

42

45

46

46

47

36

35

35

35

34

35

34

34

36

37

37

37

37

35

36

37

38

38

Dec.

37

38

38

37

37

36

35

36

35

36

35

35

32

36

37

36

35

36

35

35

35

34

35

34

36

35

35

36

37

34

34

36

Jan.

35

37

37

37

35

36

36

36

32

36

36

37

37

35

34

34

34

35

36

37

36

35

35

35

36

33

35

35

34

35

34

35

Feb.

36

35

35

36

36

35

36

36

37

37

35

36

37

36

37

37

34

37

37

37

36

37

38

37

36

37

37

37

..

_

36

Mar.

38

40

36

36

37

37

39

42

41

42

40

41

41

43

41

42

42

41

40

41

38

35

39

40

42

41

44

46

45

48

41

Apr.

39

40

42

42

43

44

45

46

46

47

47

49

46

48

48

49

49

49

50

49

47

49

48

47

43

45

47

53

54

_

47

May

58

58

58

58

58

59

52

50

55

56

57

51

57

56

55

55

57

56

57

47

_

51

47

55

59

59

60

60

61

62

56

June

64

66

70

71

68

68

67

67

68

61

63

62

56

58

58

55

54

64

63

65

66

63

62

62

64

63

69

71

69

~

64

July

65

67

68

68

69

65

67

73

74

71

71

70

70

69

73

72

66

70

69

65

72

69

65

71

75

72

69

76

73

74

75

70

Aug.

76

75

74

74

74

73

69

71

73

65

70

72

76

75

70

75

66

76

71

75

72

70

68

67

66

65

66

65

62

61

60

70

Sept.

58

61

63

70

70

64

65

63

61

60

60

58

55

60

65

61

59

60

58

55

57

59

62

62

62

64

66

62

62

60

61
GREEN RIVER BASIN Continued

HENRYS FORK AT LINWOOD, UTAH

LOCATION. About 75 yards upstream from gaging station, which is in Sweetwater County, Wyo., 300 

Daggett County.

DRAINAGE AREA. 531 square miles. 

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1957.

Water temperatures: March 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 2,620 ppm Oct. 1-10; minimum, 377 ppm June 21-30.

Hardness: Maximum, 1,580 ppm Oct. 1-10; minimum, 258 ppm June 21-30.

Specific conductance: Maximum daily, 3,180 micromhos Oct. 6; minimum daily, 476 micromhos June 

Water temperatures: Maximum, 70°F Aug. 5; minimum, freezing point on many days during October 

EXTREMES, 1951-57. Dissolved solids: Maximum, 2,640 ppm Sept. 21-30, 1956; minimum, 312 ppm June 

Hardness: Maximum, 1,580 ppm Sept. 21-30, Oct. 1-10, 1956; minimum, 208 ppm June 1-6, 9-10, 19

Specific conductance: Maximum daily, 3,180 micromhos Oct. 6, 1956; minimum daily, 395 micromhos 

Water temperatures: Maximum, 70°F Aug. 5, 1957; minimum, freezing point on many days during win

REMARKS. Records of specific conductance of daily samples available in district office at Salt L

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-10, 1956 ..

Nov. 1-13 .......

Jan. 1-10, 1957 . .

Mar. 11-20 ......

Mar. 21-31 ......

Mean 

discharge 

(cts)

0.6 

1.2 

26.6 

38.3 

24.4 

28.3

29.2 

35.1 

34.9 

29.9 

28.7 

24.2

28.0 

64.3 

31.2 

20.5 

19.7 

33.7

Silica 

(810,)

26 

23 

24 

25 

25 

23

21 

20 

19 

18 

20 

20

20 

20 

21 

20 

20 

21

Iron 

(Fe)

Calcium 

(Ca)

35S 

347 

206 

188 

168 

168

152 

ISO 

152 

156 

147 

151

165 

128 

95 

130 

131 

136

Magnesium 

(Mg)

168 

165 

103 

95 

94 

81

78 

74 

73 

71 

78 

80

84 

58 

60 

69 

61 

69

Sodium 

(Na)

222 

209 

119 

96 

95 

80

73 

66 

67 

68 

72 

71

74 

62 

54 

64 

61 

68

Potassium 

(K)

15 

15 

14 

12 

11 

11

9.6 

8.8 

8.8 

8.8 

8.5 

8.5

8.8 

10 

9.3 

8.5 

9.1 

9.1

Bicarbonate 

(HCOS)

400 

396 

296 

309 

250 

276

266 

288 

276 

282 

249 

258

291 

241 

234 

266 

290 

280

Sulfate 

(S04 )

1,550 

1,480 

849 

729 

719 

631

569 

521 

535 

539 

581 

589

617 

455 

376 

464 

444 

474

Chloride 

(Cl)

87 

83 

54 

44 

43 

38

33 

33 

31 

34 

36 

36

38 

28 

26 

30 

30 

32

Fluoride 

(F)

Nitrate 

(NO,)

1.3 

1.1 

1.1 

1.9 

1.5 

1.5

1.0 

1.1 

.8 

1.1 

.4 

1.0

.6 

1.7 

1.3 

.8 

.6 

.6

Boron 

(B)

0.57 

.57 

.31 

.25 

.28 

.24

.21 

.23 

.21 

.21 

.26 

.25

.26 

.21 

.18 

.23 

.22 

.25
Apr. 1-10, 1957..

May 1 10

May 21-31, June 1-3

Sept. 21-30......

Weighted average

49.2 

100

51.6

56.7

453

160

39.2

92.8

22 

24

20

29

17

19

24

22

19

17

19

21

133 

102

124

122

137 

81

74

67

97

125

125

144

136

172

106

72 

40

59

61

50

60 

22

22

22

36

48

46

65

74

98

102

43

77 

55

65

65

70

27

24

36

47

49

58

62

87

45

9.6 

9.9

8.6

8.3

9.5 

7.9

5.8

4.6

4.5

6.3

8.4

8.3

9.0

8.7

12

7.7

252 

244

265

249

272 

200

176

173

178

225

272

275

268

254

246

266

270

226

522 

304

428

438

364

466 

172

165

146

149

259

347

477

526

722

313

38 

27

32

32

32

34

14

14

11

14

18

20

22

23

26

30

30

39

43

22

.9 

1.3

.8

.6

.8

1.1 

2.3

1.2

.8

.8

.8

1.0

.4

.9

1.1

1.2

.8

1.2

.27

.19

.22

.24

.21

.28

.14

.14

.15

.16

.19

.18

.21

.29

.34

.32

0.19
60 COLORADO RIVER BASIN

GREEN RIVER BASIN Continued

HENRY FORK AT LINWOOD, DTAH Continued

Temperature (°F) of water, 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

Average

Oct.

46

43

45

46

46

46

49

48

46

46

51

44

43

42

40

40

40

39

38

36

44

39

45

40

33

38

39

39

35

32

34

42

Nov.

32

32

33

32

34

36

36

32

34

34

35

36

33

32

32

32

33

33

32

32

32

33

33

33

32

33

32

32

32

32

33

Dec.

32

32

33

33

33

34

32

33

32

34

33

34

32

33

33

33

32

34

32

32

32

32

33

32

32

32

32

32

32

32

33

Jan.

32

34

33

33

32

32

32

34

32

32

32

33

33

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

Feb.

33

33

32

32

35

33

32

32

32

32

32

32

32

33

32

32

33

32

33

32

33

32

35

32

33

32

34

33

..

33

Mar.

32

32

33

32

33

32

33

35

37

36

32

33

34

33

32

35

38

35

34

34

38

32

32

33

34

36

34

34

40

38

40

34

Apr.

38

36

35

34

38

39

35

36

35

38

37

37

38

42

42

38

40

42

38

38

44

45

38

38

38

34

36

38

43

45

38

May

44

46

47

48

53

49

52

50

51

50

48

50

46

48

46

44

44

49

53

44

45

44

._

48

50

50

52

54

54

53

49

June

53

55

57

58

62

60

60

56

60

56

53

58

46

50

45

46

55

58

60

53

52

55

56

58

58

58

60

62

61

56

July

61

62

62

59

56

60

60

58

60

60

60

60

60

62

62

63

65

62

63

58

60

58

58

54

"

57

60

58

62

60

64

60

Aug.

60

65

62

62

70

65

65

60

62

65

64

62

60

54

62

60

60

68

62

62

60

62

60

60

62

62

60

58

65

58

55

62

Sept.

55

55

_

58

58

58

68

_

52

65

60

55

50

50

55

50

52

58

45

50

45

55

48

50

56

50

50

50

52

54
GREEN RIVER BASIN Continued

GREEN RIVER NEAR GREENOALE, UTAH

LOCATION. At gaging station half a mile downstream from Asbley Falls, li miles upstream from Cart 

and 12 miles southeast of Linwood, Oaggett County.

RECORDS AVAILABLE.--Chemical analyses: October 1956 to September 1957. 

Water temperatures: October 1956 to September 1957. 

Sediment records: October 1956 to September 1957.

REMARKS. Records of specific conductance of daily samples available in district office at Salt Lake C

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to Sep

Date of collection

Oct. 4, 9, 1956 .... 

Oct. 12, 16, 19 ....

Nov. 2 ............

Nov. 13, 16.20..... 

Nov. 23, 27, 30....

Dec. 3, 6 .........

Dec. 11, 14, 17, 20 

Dec. 26, 31, Jan. 4, 

1957 .............

June 12-14, 17-20 . . 

June 21, 24-28 .....

Mean 

discharge 

(cfs)

672 

664 

676 

1,100 

824 

611 

483

450 

400

400 

1,340 

1,740

3,837 

4,865 

14, 780 

15,200 

7,933

Silica 

(S10.)

5.2 

5.6 

6.5 

9.9 

10 

10 

12

11 

9.7

11 

14 

12

14 

12 

11 

11 

10

Iron 

(Fe)

0.02 

.00 

.02 

.03 

.01 

.02 

.02

.02 

.02

.03 

.01 

.00

.01 

.01 

.03 

.02 

.02

Calcium 

(Ca)

62 

63 

67 

86 

79 

82 

97

87 

100

92 

70 

66

64 

55 

46 

44 

46

Magnssium 

(Mg)

23 

27 

27 

30 

29 

32 

38

33 

30

33 

28 

26

23 

18 

12 

11 

13

Sodium 

(Na)

60 

63 

63 

111 

79 

73 

89

71 

77

69 

78 

58

51 

40 

20 

30 

27

Potassium 

(K)

2.7 

2.6 

2.6 

5.4 

2.6 

2.6 

2.6

2.6 

2.7

3.0 

2.6 

2.6

2.6 

2.6 

2.3 

2.3 

2.3

Bicarbonate 

(HCO,)

175 

185 

198 

226 

216 

220 

268

239 

242

249 

212 

220

224 

196 

162 

157 

162

Carbonate 

(CO,)

Sulfate 

(SO.)

215 

233 

230 

306 

269 

277 

335

279 

309

285 

239 

184

149 

110 

63 

76 

85

Chlorids 

(CD

12 

12 

12 

56 

18 

20 

17

16 

17

18 

25 

19

18 

15 

8.0 

12 

9.5

Fluoride 

(F)

0.4 

.4 

.4 

.5 

.4 

.4 

.4

.4 

.4

.4

.5

.6 

.4 

.4

Nitrate 

(NO,)

0.5 

.4 

.3 

3.7 

.8 

.7 

.6

.7 

1.1

.7 

1.9 

1.9

2.5 

1.6 

2.1 

1.1 

1.1

Boron 

(B)

0.09 

.11 

.10

.09

.08 

.05
GREEN RIVER BASIN--Continued

GREEN RIVER NEAR'GREENDALE, UTAH Continued

Chemical analyses, in parts per million, water year October 1956 to Septemb

Date of collection

July 1-3, 5, 8-10... 

July 11-12, 15-19 .. 

July 22-26, 29-31 . . 

Aug. 6, 8, 14......

Aug. 21, 23, 26, 28-

Sept. 11, 18, 25....

Weighted average .

Mean 

discharge 

(cfs)

8,899 

7,007 

4,996 

2,703

1,798

1,900 

1,277

a 2, 677

Silica 

(SiOa)

8.8 

9.4 

8.1 

8.7

9.5

8.6 

6.5

Iron 

(Fe)

0.03 

.05 

.04 

.12

.05

.02 

.01

Calcium 

(Ca)

40 

46 

46 

55

66

58 

57

Magnesium 

(Mg)

11 

13 

14 

17

23

22 

23

Sodium 

(Na)

20 

28 

30 

43

57

49 

55

Potassium 

(K)

2.1 

2.1 

2.8 

2.9

3.1

3.3 

2.5

Bicarbonate 

(HCO,)

138 

166 

162

174

180

176 

171

Carbonate 

(CO,)

Sulfate 

(S04)

63 

81 

91 

135

206

172 

190

-

Chloride 

(Cl)

9.5 

10 

12 

16

19

16 

15

-

Fluoride 

(F)

0.5 

.7 

.6 

.2

.4 

.3

-

Nitrate 

(NO,)

1.4 

.9 

.8

.7

1.7

2.1 

1.5

-

Boron 

(B)

0.07 

.13 

.11

-

a Includes estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 1957.
GREEN RIVER BASIN 

GREEN RIVER BASIN Continued 

GREEN RIVER NEAR GREENDALE, UTAH Continued 

Temperature (°F) of water, water year October 1956 to September

63

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

Average

Oct.

..

_

58

--

56

..

48

-_

--

50

_

45

~

45

.-

~

42

__

_

_

--

Nov.

_

33

..

"

_

-

_

33

_

--

33

_

-.

33

_

33

-

..

33

__

_

33

Dec.

..

--

33

33

--

33

_.

33

--

_

33

33

_

-_

_.

--

33

_

.

-_

33

Jan.

33

Feb. Mar. Apr.

45

May

48

_

_

-

_

54

..

_

 _

_

_

52

_

_

-_

-

..

52

_

-

..

-_

_

62

-.

June

_

_

_

_

69

_

-_

61

60

60

58

58

..

54

54

60

60

60

_

63

64

64

66

65

_

July

69

69

71

._

67

_

67

70

68

69

68

__

73

71

69

69

70

--

68

67

68

67

71

__

71

72

73

Aug.

__

-_

_

-

71

68

--

--

_

70

..

..

_

--

69

_

70

._

"

68

--

66

61

61

--

Sept.

_

..

64

63

--

..

--

..

--

_

_

59

--

_

__

60

..

--

__

_

--

Monthly summary of suspended sediment, water year October 1956 to September 1957

Month

1956

November ............................

December ............................

1957 

January .............................

February ............................

March ...............................

April ................................

June ................................

July ................................

August ..............................

September ...........................

Total for year .......................

Mean discharge 

(cfs)

23, 128

19, 474

12, 900

14, 050

21,660

33, 126

43,390

137, 050

342, 650

216,860

71, 490

41,400

977, 178

Suspended sediment 

(tons)

73,605

11,060

2,940

6,230

24, 660

56,300

100, 200

879, 300

1,980,000

516, 100

141,260

17, 460

3,809,115
GREEN RIVER BASIN Continued

YAMPA RIVER NEAR MAYBELL, COLO.

LOCATION. At county bridge, 1 mile north of Maybell, Moffat County, and about 3i miles downstream 

DRAINAGE AREA. 3,410 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: November 1950 to September 1957.

Water temperatures: November 1950 to September 1957.

Sediment records: December 1950 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 450 ppm Oct. 1-10; minimum, 85 ppm July 1-10.

Hardness: Maximum, 236 ppm Apr. 5-11, 1957; minimum, 50 ppm July 1-10.

Specific conductance: Maximum daily, 925 micromhos Oct. 1; minimum daily, 113 micromhos July 3.

Water temperatures: Maximum, 76°F Aug. 6; minimum, 33°F on several days during December to March

Sediment concentrations: Maximum daily, 976 ppm Apr. 15; minimum daily, 7 ppm Feb. 15.

Sediment loads: Maximum daily, 16,500 tons May 8; minimum daily, 3 tons Oct. 3. 

EXTREMES, 1950-57. Dissolved solids; Maximum, 545 ppm Sept. 21-30, 1956; minimum, 72 ppm June 21

Hardness: Maximum, 238 ppm Dec. 1-10, 1952; minimum, 45 ppm June 21-30, July 1-10, 1951.

Specific conductance: Maximum daily, 947 micromhos Sept. 24, 1955; minimum daily, 94.3 micromhos 

Water temperatures: Maximum, 81°F July 30, 1951; minimum, freezing point on many days during win

Sediment concentrations: Maximum daily, 6,000 ppm July 22, 1951; minimum daily, 2 ppm Jan. 21 to 

Sediment loads: Maximum daily, 23,400 tons May 9, 1955; minimum daily, 1 ton Jan. 2 to Feb. 4, 19

REMARKS. Records of specific conductance of daily samples available in district office at Salt Lak

1956 to September 1957 given in WSP 1513. Flow affected by ice Nov. 19 to Mar. 16.

Chemical analyses, In parts per million, water year October 1956 

Date of collection

Oct. 1-10, 1956 .....

Oct. 11-20..........

Oct. 21-31..........

Nov. 1-10 ..........

Nov. 11-20..........

Nov. 21-30..........

Dec. 1-3, 11, 15 ....

Dec. 18, 21, 25, 28..

Jan. 1,4,8,11,15,1957

Jan. 18, 22, 25, 29..

Feb. 1, 5, 8, 12.....

Feb. 15, 19, 22, 26..

Mar. 1, 5, 7, 12 ....

Mar. 18-3L.........

Mean 

discharge 

(cfs)

84.6

108

180

9f\O *UW

227

202

194

165

220

200

190

270

275

663

Silica 

(SiO.)

4.5

6.4

7.9

11

12

13

12

13

14

14

14

13

10

11

Iron 

(Fe)

Calcium 

(Ca)

45

44

44

44

45

49

47

44

44

45

43

42

43

45

Magnesium 

(Mg)

22

19

1R 1O

17

17

19

18

17

16

16

16

16

17

19

Sodium 

(Na)

80

62

53

44

43

49

47

42

42

43

42

44

47

46

Potassium 

(K)

3.5

3.0

3 0

2.5

2.5

2

0 

. O

2.8

2.6

2.6

2.3

2.3

2.3

2.8

2.5

Bicarbonate 

(HCO,)

219

199

199

197

197

220

206

195

196

195

190

188

173

173

Carbonate 

(CO,)

Sulfate 

(SO,)

122

QQ

tfo

89

74

74

85

81

73

72

74

73

79

106

120

Chloride 

(Cl)

52

42

31

25

25

on 

£a

30

27

26

28

25

25

22

19

Fluoride 

(F)

__

. 

--

Nitrate 

(NO,)

0.8

1.1

Q

Q

.6

.6

1.1

1.9

2.0

2.2

1.2

.8

.8
Apr. 1-4,1957.......

May 2-10 ...........

May 11-20 ..........

June 11-20..........

July 11-20 ..........

July 21-31 ..........

Aug. 1-10 ..........

Sept. 1-10 ..........

Sept. 11-20 .........

Weighted average a

Weighted average b

7,030

8,082

7OQ

563

3,058

2,460

11

12

12

11

9 2

9.6

12

11

11

9ft

26

27

6.1

5.1

6.0

6.2

8.6

25

11

12

2

0

1

0

2 

A

1.7

1.7

OR

95

97

8 9

15

30

31

2

ft

4.0

4.5

_

_

_

_

_

_

-

--

1.9

2.8

2.9

1.7

.8

.6

1.6

3.9

1.2

1.2

--

-

a Represents 98 percent of runoff for water year October 1956 to September 1957 

b Includss estimated data for missing periods. Represents 100 percent of runoffiff for water year October 1956 to September 1957.
COLORADO RIVER BASIN

GREEN RIVER BASIN Continued

YAMPA RIVER NEAR MAYBELL, COLO.--Continued

Temperature (°F) of water, 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

Average

Oct.

63

58

58

58

60

59

59

58

58

58

57

57

57

57

55

55

55

55

54

52

52

52

50

45

45

45

44

45

43

42

40

53

Nov.

38

35

35

35

35

36

36

37

39

40

42

42

40

40

40

39

38

36

34

35

34

34

34

34

34

34

34

34

34

34

36

Dec.

34

34

34

._

--

_

_.

-_

-

33

_

34

--

_

34

-

33

_

33

..

34

"

Jan.

34

34

-

_

34

-.

34

__

..

34

_

_

34

_

34

_.

33

..

_.

33

"

Feb.

33

33

__

34

--

_

34

_.

33

_

34

_

34

-

34

__

--

Mar.

33

34

_

34

__

--

'

34

._

--

_

34

34

34

34

34

34

34

34

34

34

34

35

34

35

--

Apr.

38

39

40

42

45

46

46

48

48

50

54

56

56

58

55

53

53

52

52

50

54

54

53

53

54

54

--

54

54

53

50

May

53

56

56

56

58

56

56

55

54

50-

52

48

48

48

44

49

51

51

51

51

51

51

51

51

51

52

52

52

52

53

54

52

June

55

57

57

58

60

60

60

59

58

56

56

54

52

54

52

50

48

48

50

54

58

58

58

58

58

58

59

62

64

66

57

July

69

65

65

65

65

66

66

65

65

68

63

64

65

66

67

64

60

62

62

63

64

65

66

69

68

68

69

70

74

66

Aug.

72

73

74

75

75

76

75

75

75

72

72

70

73

73

73

73

73

73

73

73

73

73

73

73

73

73

72

70

69

69

66

73

Sept.

65

"

68

65

64

60

62

66

65

52

52

55

56

55

60

59

58

55

60

60

67

55

-

62

69

56

61

60
GREEN RIVER BASIN

GREEN RIVER BASIN Continued

YAMPA RIVER NEAR MAYBELL, COLO. Continued

Suspended sediment, water year October 1956 to September 1957

67

Day

1. .....

2. .....

3......

4. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

12. .....

15. .....

16. .....

21......

22. .....

24. ..... 

25. .....

26......

28. .....

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

&..... 

9. ..... 

10. .....

13. ..... 

14. ..... 

15......

19. ..... 

20. .....

22. ..... 

23. ..... 

24. ..... 

25. .....

26. ..... 

27...... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

October

Mean 

discharge 

(cfs)

60 

62 

68 

83 

89

97 

97 

93 

97 

100

89 

89 

91 

102 

108

113 

120 

120 

120 

125

130 

122 

120 

167 

177

184 

222 

222 

216 

216 

208

3,907

Suspended sediment

Mean 

concen - 

tration 

(ppm)

29 

44 

17 

16 

16

54 

50 

49 

26 

26

37 

38 

41 

31 

42

40 

43 

45 

41 

47

45 

46 

42 

50 

177

178 

86 

27 

27 

24 

27

-

Tons 

per 

day

5 

7 

3 

4 

4

14 

13 

12

7 

7

9 

9 

10 

9 

12

12 

14 

15 

13 

16

16 

15 

14 

23 

85

88 

52 

16 

16 

14 

15

549

January

190 

200 

210 

220 

210

200 

210 

220 

210 

200

190 

180 

200 

230 

280

260 

240 

200 

180 

160

180 

190 

190 

200 

210

220 

230 

220 

200 

190 

180

6,400

14 

15

16

24 

11 

11

12 

10

12

"

b8 

b9 

b6

236

November

discharge 

(cfs)

212 

202 

194 

170 

164

205 

194 

244 

240 

264

289 

256 

260 

264 

222

164 

174 

230 

210 

200

190 

190 

200 

210 

220

220 

210 

200 

190 

190

6,378

Suspended sediment

Mean 

concentration 

(ppm)

22 

22 

32 

63 

122

51 

21 

22 

28 

38

30 

20 

20 

20 

25

22 

44 

34

 21

-

Tons 

per 

day

13 

12

17 

a 29 

54

28 

11 

14 

18 

27

23 

14 

14 

14 

15

10 

21 

21

11

487

February

180 

180 

190 

200 

190

180 

110 

180 

190 

200

210 

210 

220 

240 

260

250 

250 

240 

240 

250

260 

270 

280 

300 

300

310 

310 

300

6,560

10 

9 

9

10

7

18 

22

21

-

b4

b5 

b!7

226

December

Mean 

discharge 

(cfs)

190 

190 

200 

200 

200

210 

220 

230 

200 

150

180 

200 

210 

220 

210

200 

190 

180 

170 

160

160 

180 

170 

160 

150

160 

170 

170 

180 

190 

200

5,800

Suspended sediment

Mean 

concentration 

(ppm)

8 

7 

8

21 

15

15 

15 

15 

13

-

Tons 

per 

day

b4 

b8 

b6

186

March

290 

280 

270 

260 

260

270 

280 

300 

320 

300

290 

270 

280 

300 

350

420 

464 

522 

546 

570

642 

663 

789 

705 

663

663 

642 

614 

670 

719 

880

14,492

80 

98 

87 

85

78 

80 

112 

78 

75

75 

70 

78 

58 

120 

435

"

b!2

b22

a 100 

138 

128 

131

135 

143 

239 

148 

134

134 

121 

129 

105 

233 

Ir 030

3,320

a Computed from estimated concentration graph, 

b Computed from water-sediment discharge curves.
COLORADO RIVER BASIN 

GREEN RIVER BASIN Continued 

YAMPA RIVER NEAR MAYBELL, COLO. Continued 

Suspended sediment, water year October 1956 to September 1957--Continued

Day

1......

2. .....

3. .....

6. .....

8. ..... 

9. .....

10. .....

11......

14. ..... 

15. .....

16. .....

18. ..... 

19. ..... 

20. .....

21......

22. .....

24. ..... 

25. .....

26......

28. ..... 

29......

31...... 

Total.

1...... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9. ..... 

10. .....

13...... 

14. ..... 

15......

18. .....

20. .....

oo

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

April

Mean 

discharge 

(cfs)

1,100 

1,110 

1,000 

950 

852

810 

990 

1,040 

754 

845

1,150 

1,610 

1,930 

2,200 

2,500

2,800 

3,000 

3,200 

3,500 

3,300

3,000 

2,800 

3,000 

3,500 

3,300

3,000 

2,800 

2,600 

2,400 

2,200

63, 241

Suspended sediment

Mean 

concentration 

(ppm)

485 

480 

460 

355 

210

178 

200 

202 

178 

180

192 

915 

920 

920 

976

212 

204 

121 

210 

211

113 

115 

113 

115 

112

115 

115 

109

222

-

Tons 

per 

day

1,440 

1,440 

1,240 

911 

483

389 

535 

567 

362

411

596 

3,980 

4,790 

5,460 

6,590

1,600 

1,650 

1,050 

1,980 

1,880

915

869 

915 

1,090 

998

932 

869 

765 

el, 040 

1,320

47,067

July

12,500 

11,800 

10,800 

10, 300 

10,000

8,840 

7,760 

7,640 

8,170 

6,880

6,230 

6,290 

6,170 

5,660 

5,100

4,810 

4,400 

4,350 

4,710 

4,470

4,200 

3,830 

3,290 

3,360 

3,620

2,970 

2,640 

2,530 

2,450 

2,270 

2,360

180, 400

217 

178 

162 

182 

178

156 

146 

142 

172 

158

178 

173 

110 

80 

68

32 

14 

70 

70 

52

60 

58 

53 

116 

197

290 

97 

48 

55 

57 

55

Total discharge for year (cfsTotal load for year (tons) ....

7,320 

5,670 

4,720 

5,060 

4,810

3,720 

3,060 

2,930 

3,790 

2,940

2,990 

2,940 

1,830 

1,220 

936

1,060 

879 

822 

890 

628

680 

600 

471 

1,050 

1,930

2,330 

691 

328 

364 

a 350 

350

67,359

May

Mean 

discharge 

(cfs)

3,500 

4,580 

5,250 

6,210 

6,980

7,590 

7,740 

8,240 

9,010 

11,200

12,400 

11, 800 

9,460 

7,590 

8,670

7,330 

6,150 

5,470 

5,500 

6,450

7,180 

6,060 

5,250 

5,100 

5,120

5,340 

5,430 

6,190 

7,450 

8,650 

8,940

221,830

Suspended sediment

Mean 

concentration 

(ppm)

380 

555 

570 

605 

630

620 

500 

740 

627 

490

428 

350 

220 

165 

210

210 

224 

135 

130 

145

160 

145 

370 

455 

450

410 

380 

405 

395 

415 

405

-

Tons 

per 

day

3,590 

6,860 

8,080 

10, 100 

11,900

12,700 

10,400 

16,500 

15,300 

14,800

14, 300 

11,200 

5,620 

3,380 

4,920

4,160 

3,720 

1,990 

1,930 

2,530

3,100 

2,370 

5,240 

6,270 

6,220

5,910 

5,570 

6,770 

7,950 

9,690 

9,780

232, 850

August

2,050 

1,860 

1,680 

1,500 

1,350

1,280 

1,370 

1,320 

1,310 

1,310

1,110 

990 

950 

958 

915

845 

852 

859 

775 

726

747 

915 

915 

894 

845

726 

691 

684 

733 

754 

712

32, 626

60 

178 

115 

71 

61

42 

43 

33

60 

118

130 

100 

35 

14 

28

19 

13 

15 

15 

42

55 

37 

13 

17 

18

14 

14 

16 

19 

23 

23

332 

894 

522 

288 

222

145 

159 

118 

212 

417

390 

267 

90 

36 

69

43 

30 

35 

31 

82

111 

91 

32 

41 

41

27 

26 

30 

38 

47 

44

4,910

June

Mean

discharge 

(cfs)

9,340 

10, 200 

10,800 

11,500 

12,400

13, 300 

14,000 

14, 800 

15, 400 

14, 800

13,400 

12, 100 

11,500 

12, 200 

14, 200

13, 100 

12, 200 

11,700 

9,560 

8,600

8,960 

9,920 

9,250 

8,360 

8,530

9,420 

10, 100 

10, 500 

11,000 

11,800

342,940

Suspended sediment

Mean 

concentration 

(ppm)

420 

455 

460 

495 

365

267 

245 

258 

255 

262

238 

230 

335 

255 

220

235 

223 

242 

253 

252

243 

234 

234 

239 

238

230 

230 

224 

130 

133

-

Tons 

per 

day

10,600 

12,500 

13,400 

15, 400 

12,200

9,590 

9,260 

10,300 

10, 600 

10,500

3,610 

7,510 

10,400 

8,400 

8,430

8,310 

7,350 

7,640 

6,530 

5,850

5,880 

6,270 

5,840 

5,390 

5,480

5,850 

6,270 

6,350 

3,860 

4,240

248,810

September

719 

719 

684 

614 

552

510 

492 

464 

447 

425

410 

395 

385 

390 

400

447 

469 

436 

405 

390

375 

375 

390 

395 

400

400 

375 

360 

345 

335

13,503

88 

100 

82 

69 

58

45 

42 

45 

43 

41

32 

28 

27 

23 

31

53 

64

47

15 

11

-

171 

a 190 

a 150 

a 110 

a 86

62 

a 56 

a 56 

a 52 

a 47

a 35 

a 30 

28 

a 24 

a 33

a 64 

a81 

a 55

a 13

1,486

898, 077 

607,486

e Estimated.

a Computed from estimated concentration graph.

b Computed from water-sediment discharge curves.
GREEN RIVER BASIN Continued 

YAMPA RIVER NEAR MAYBELL, COLO. Conti

Particle-size analyses of suspended sediment, water year October 

(Methods of analysis: B, bottom withdrawal tube; D, decantation; P, pi pe

W, In distilled water; C, chemically dispersed; M, mechani

Date 

of 

Collection

June 10, 1957. .... 

June 13 ..........

Time

4:30 p.m. 

11:30 a.m.

Discharge 

(cfs)

14,300 

11. 300

Water 

temperature 

<°F)

56 

59

Suspended 

Concentration 

of sample 

(ppm)

235 

331

Concentration 

of suspension 

analyzed 

(ppm)

498 

763

Percent 

0.002

57 

28

0.004

66 

36

0.008

80 

44

0.016

87 

53
GREEN RIVER BASIN Continued 

LITTLE SNAKE RIVER NEAR LILY, COLO

LOCATION. About 2 miles upstream from gaging station, which is 6 miles north of Lily, Moffat Co

DRAINAGE AREA. 3,730 square miles, approximately (above gaging station). 

RECORDS AVAILABLE. Chemical analyses.- December 1950 to September 1957.

Water temperatures: December 1950 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 1,100 ppm Oct. 20-29; minimum, 109 ppm July 1-8, 

Hardness: Maximum, 284 ppm Oct. 20-29; minimum, 64 ppm July 1-8, 10.

Specific conductance: Maximum daily, 1,920 micromhos Oct. 28; minimum daily, 145 micromhos Ju

Water temperatures; Maximum, 82°F July 28, Aug. 24; minimum, freezing point on many days duri

EXTREMES, 1950-57. Dissolved solids (1950-51, 1952-57): Maximum, 2,330 ppm July 24, 1955; mini

Hardness (1950-51, 1952-57): Maximum, 1,340 ppm July 24, 1955; minimum, 64 ppm July 1-8, 10, 

Specific conductance (1950-51, 1952-57): Maximum daily, 2,670 micromhos July 24, 1955; minimu

Water temperatures (1950-51, 1952-57): Maximum, 88°F July 17, 1955; minimum, freezing point o

REMARKS. Records of specific conductance of daily samples available in district office at Salt 

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 19

Date of collection

Oct. 20-29, 1956 . 

Oct. 30-31,

Jan. 1-10, 1957 ..

Feb. 21-28 ......

Vfat> 91 31

Apr. 21-30, May 1

Mean 

discharge 

(cfs)

12.7

46.7 

79.0 

63.5 

53.0 

55.5 

54.1

55.5 

61.0 

59.5 

56.0 

88.0 

101

99.5 

238 

284 

365 

619 

781

Silica 

(SiO,)

13

16 

18 

21 

19 

19 

20

19 

21 

21 

20 

18 

14

18 

19 

16 

16 

17 

17

Iron 

(Fe)

Calcium 

(Ca)

76

52 

54 

61 

59 

56 

57

55 

51 

53 

52 

48 

29

38 

41 

52 

56 

55 

48

Magnesium 

(Mg)

23

14 

14 

18 

16 

14 

14

13 

14 

13 

12 

12 

5.4

5.8 

8.3 

12 

14 

14 

10

Sodium 

(Na)

244

141 

90 

89 

76 

68 

58

55 

60 

52 

51 

56 

88

97 

93 

74 

68 

50 

28

Potassium 

(K)

4.9

2.6 

2.0 

2 2 

2.2 

2.2 

1.9

1.9 

1.7 

1.7 

1.9 

1.9 

2.2

2.4 

2.5 

2.5 

2.5 

2.5 

1.7

Bicarbonate 

(HCO,)

229

258 

242 

267 

249 

236 

235

224 

220 

225 

218 

209 

178

196 

199 

210 

209 

202 

169

Sulfate 

(SOJ

479

210 

140 

149 

127 

121 

106

102 

104 

90 

87 

97 

86

108 

126 

132 

141 

115 

70

Chloride 

(Cl)

100

46 

31 

30 

26 

22 

20

17 

19 

16 

15 

18 

38

38 

34 

26 

22 

14 

7.6

Fluoride 

(F)

Nitrate 

(NO,)

1.9

2.3 

1.8 

1.2 

.9 

.9 

.8

.8 

.7 

.6 

.8 

.5 

1.4

2.1 

1.9 

1.9 

2.1 

1.8 

2.1

Bo

ro

(B

0.

.

.

.

.

.
May 2-11, 1957 ..

May 22-25, 27-31

July 1-8, 10 .....

July 11-13, 16-20.

July 21-31 .......

Aug. 11, 14-15, 18 

Aug. 12-13, 16-17,

Weighted average

2,884 

2,594

1,925

2,093 

4,142

2,766

2,103

869

411

213

126 

94.3

72.7

63.5

36.6

740

IS 

15

18

16 

14

13

11

13

19

18

20 

21

16

7.6

14

39 

29

28

27 

29

27

23

30 

40

42

58 

44

54

54

60

54

33

6.2 

4.7

4.1

4.5 

2.7

2.6

1.9

1.6 

2.4

3.3

6.3

8.5

8. 8 

6.3

9.2

10

15

4.7

21 

17

36

14 

9.0

13

8.2

7.8 

22

21 

67

40

46

161 

107

94

74

98

97

22

1.7 

1.7

2.7

1.1 

.9

1.4

.9

.8 

1.9

2.2 

3.5

2.8

3.0

5.3 

3.9

3.5

3.2

3.5

3.3

1.5

152 

113

144

106 

106

107

97

84 

116

121 

168

178

191

245 

234

233

226

240

236

127

31 

27

32

24 

11

17

9.1

8.1 

37

28 

77

62

80

247 

137

139

122

164

34

5.2 

5.0

4. 5 

2.8

2.5

2.5

6.2 

34

10

16

62 

30

29

24

35

6.7

2.1

1.6

1.6

1.2 

1.3

1.1

.9 

1.3

1.0 

1.4

1.5

1.9

2.1

2.4

2.4

1.9

.9

.8

1.4

.08

"

.07

--

.06

_

.16 

.15

__

.09

"

a Calculated from determined constituents.

b Represents 95 percent of runoff for water year October 1956 to September 1957.
72 COLORADO RIVER BASIN 

GREEN RIVER BASIN Continued

LITTLE SNAKE RIVER NEAR LILY, COLO. Continued 

Temperature (°F) of water, 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

Average

Oct.

..

55

52

50

43

52

50

50

44

--

--

Nov.

35

35

35

34

34

34

35

41

39

43

41

41

43

32

32

32

33

33

32

32

32

32

32

32

32

32

32

32

34

35

--

35

Dec.

34

33

33

34

33

33

32

32

32

32

32

34

35

35

33

34

34

33

34

35

34

32

32

32

32

32

32

32

32

32

32

33

Jan.

32

32

32

32

33

34

33

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

33

32

32

32

32

32

32

32

Feb.

32

33

32

32

32

34

33

33

35

34

32

34

33

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

_

_

--

32

Mar.

32

32

33

32

32

32

33

41

42

38

43

40

40

39

40

42

44

43

45

52

40

36

36

39

44

47

49

51

52

52

41

Apr.

47

49

39

39

45

47

44

48

55

51

53

54

49

54

56

55

52

50

45

52

51

52

45

48

46

42

48

52

52

56

--

49

May

60

62

60

62

60

59

56

54

49

51

51

51

50

50

49

47

52

50

49

50

51

53

53

54

55

..

_

_

_

54

June

63

64

64

64

64

64

65

63

65

59

60

60

57

58

51

50

53

56

60

50

60

56

57

64

64

62

63

61

66

68

--

60

July

64

69

69

70

64

64

63

62

65

73

74

72

72

74

74

75

70

69

73

70

74

75

64

74

76

77

76

82

68

78

77

71

Aug.

80

80

80

66

73

76

72

74

76

78

76

72

77

78

74

76

74

70

70

75

72

71

80

82

65

75

74

74

56

60

64

73

Sept.

68

70

69

69

73

69

76

68

72

64

68

68

56

65

67

64

66

52

64

58

57

66

66

67

67

57

68

68

69

70

--

66
GREEN RIVER BASIN 73

GREEN RIVER BASIN Continued 

GREEN RIVER NEAR JENSEN, UTAH

LOCATION. At gaging station, 1 mile downstream from Cub Creek and Chew Ranch, 4 miles 

southeast of Dinosaur National Monument headquarters, 6£ miles northeast of Jensen, 

Uintah County, and 12 miles upstream from Brush Creek. 

RECORDS AVAILABLE. Water temperatures October 1952 to September 1957.

Sediment records May 1948 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 76°F July 31; minimum, freezing point

Dec. 10, 27, Jan. 31, Feb. 1.

Sediment concentrations: Maximum daily, 5,350 ppm May 13; minimum daily 17 ppm Oct. 19. 

Sediment loads: Maximum daily, 306,000 tons May 13; minimum daily, 41 tons Oct. 19. 

EXTREMES, 1948-57. Water temperatures (1952-57): Maximum, 80°F June 23, 24, July 18-20,

1954; minimum, freezing point on several days during winter months. 

Sediment concentrations: Maximum daily, 15,800 ppm Apr. 9, 1952; minimum daily, 9 ppm

Oct. 7-11, 1953. 

' Sediment loads: Maximum daily, 567,000 tons Apr. 9, 1952; minimum daily, 19 tons

Oct. 7-11, 1953

REMARKS. Records of chemical analyses from June 1947 to September 1952 and water temperatures from March 1949 to September 1952 for Green River at Jensen available in 

§rior Water-Supply papers. Records of discharge for water year October 1956 to 

eptember 1957 given in WSP 1513. Flow affected by ice Dec. 9 to Mar. 3.

Temperature (°F) of water, 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

Average

Oct.

49

49

49

50

50

49

50

53

49

50

49

49

49

49

48

48

50

46

45

43

42

46

43

..

49

43

42

42

--

47

Nov.

41

42

40

34

35

..

33

37

35

39

33

33

36

34

33

33

34

34

33

33

34

34

34

34

33

33

34

35

Dec.

34

34

35

34

35

..

33

33

33

32

33

33

33

33

33

33

33

33

33

33

34

33

33

33

33

32

33

33

33

33

33

Jan.

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

33

32

33

Feb.

32

33

33

33

33

33

33

33

33

33

33

33

33

33

..

33

33

33

--

34

36

34

36

36

35

36

35

--

34

Mar.

35

37

34

34

35

36

40

37

40

42

38

39

36

"

44

--

_

--

41

42

41

40

44

49

49

--

--

Apr.

..

44

45

43

44

46

47

51

52

49

50

50

50

51

47

54

--

--

May

_

._

--

..

59

55

55

54

49

--

50

52

55

55

56

_

~

..

--

June

..

"

--

..

64

61

62

59

58

60

57

60

60

62

64

63

64

62

..

64

63

"

July

62

63

_.

74

65

66

..

--

74

72

74

73

74

70

70

74

72

74

72

73

72

73

76

"

Aug.

73

73

73

72

73

..

74

70

65

74

..

65

74

73

67

67

66

64

63

67

68

70

65

65

67

72

72

72

65

65

64

69

Sept.

57

70

58

60

61

60

58

54

55

61

55

60

56

58

_

58

52

50

51

52

51

51

53

52
COLORADO RIVER BASIN 

GREEN RIVER BASIN Continued 

GREEN RIVER NEAR JENSEN, UTAH Continued 

Suspended sediment, -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.

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.

October

Mean 

discharge 

(cfs)

849 

842 

842 

842 

842

849 

856 

870 

863 

870

856 

849 

849 

842 

849

856 

863 

878 

892 

915

908 

915 

915 

1,030 

1,060

1,190 

1,640 

1,360 

1,240 

1,280 

1,340

30, 052

Suspended sediment

Mean 

concentration 

(ppm)

33 

34 

39 

20 

50

34 

29 

25 

65 

27

20 

21 

21 

19 

22

19 

32 

35 

17 

19

23 

26 

25 

50 

120

1,100 

485 

350 

385 

1,950 

1,800

-

Tons 

per 

day

76 

77 

89 

45 

114

78 

67 

59 

151 

63

46 

48 

48 

43 

50

44 

75 

83 

41 

47

56 

64 

62 

139 

343

3,530 

2,150 

1,290 

1,290 

6,740 

a 6, 500

23, 508

January

700 

700 

700 

700 

700

700 

700 

700 

700 

700

800 

800 

800 

800 

800

800 

800 

800 

800 

800

800 

800 

800 

750 

750

750 

750 

750 

750 

750 

750

23, 400

67 

105 

83 

75 

83

83 

58 

47 

47 

65

57 

72 

63 

67 

74

64 

43 

43 

38 

44

50 

36 

31 

26 

30

31 

43 

43 

39 

47 

51

-

127 

198 

157 

142 

157

157 

110 

89 

89 

123

123 

156 

136 

145 

160

138 

93 

93 

82 

95

108 

78 

67 

53 

61

63

87 

87 

79 

95 

103

3,451

November

Mean 

discharge 

(cfs)

1,280 

1,260 

1,240 

1,110 

1,050

1,010 

945 

1,060 

1,110 

1,400

1,480 

1,510 

1,500 

1,460 

1,360

1,220 

1,020 

1,020 

945 

645

433 

525 

667 

754 

761

787 

856 

945 

1,020 

1,040

31,413

Suspended sediment

Mean 

concentration 

(ppm)

1,020 

660 

600 

280 

237

225 

217 

208 

208 

210

226 

295 

253 

235 

235

198 

187 

157 

146 

163

165 

202 

120 

102 

82

79 

112 

122 

121 

112

-

Tons 

per 

day

3,530 

2,250 

2,010 

839 

672

614 

554 

595 

623 

794

903 

1,200 

1,020 

926 

863

652 

515 

432 

373 

284

193 

286 

216 

208 

168

168 

259 

311 

333 

314

22, 105

February

800 

800 

800 

800 

800

950 

950 

950 

950 

950

950 

950 

950 

950 

1,200

1,200 

1,200 

1,200 

1,200 

1,200

1,200 

1,300 

1,400 

1,500 

1,600

1,800 

1,900 

2,100

32, 550

54 

46 

34 

44 

38

50 

52 

51 

46 

49

46 

42 

49 

46 

89

90 

160 

189 

414

428 

488 

683 

864 

967

990 

1,600 

3,300

-

117 

99 

73 

95 

82

128 

133 

131 

118 

126

118 

108 

126 

118 

288

292 

518 

612 

1,340 

el, 360

1,390 

1,710 

2,580 

3,500 

4,180

4,810 

8,210 

18,700

51,062

December

Mean 

discharge 

(cfs)

1,020 

993 

993 

977 

993

1,080 

977 

835 

600 

700

700 

700 

700 

700 

700

700 

700 

700 

700 

700

700 

700 

700 

700 

700

700 

700 

700 

700 

700 

700

23,868

Suspended sediment

Mean 

concentration 

(ppm)

85 

70 

75 

93 

88

93 

95 

90 

180 

175

137 

143 

118 

107 

56

67 

58 

53 

57 

51

57 

58 

48 

51 

43

50 

130 

46 

44 

46 

50

-

Tons 

per 

day

234 

188 

201 

245 

236

271 

251 

203 

292 

331

259 

270 

223 

202 

106

127 

110 

100 

108 

96

108 

110 

91 

96 

81

94 

246 

87 

83 

87 

94

5,230

March

2,400 

2,600 

2,560 

2,540 

2,370

2,280 

2,270 

2,260 

2,280 

2,470

2,580 

2,860 

2,460 

2,310 

2,600

2,230 

2,100 

2,280 

2,150 

2,210

2,160 

2,220 

2,310 

2,290 

2,200

2,070 

2,070 

2,030 

1,970 

2,010 

2.030

71,170

2,350 

2,850 

2,370 

2,120 

1,970

1,800 

1,390 

890 

840 

2,400

2,910 

2,900 

3,200 

3,330 

2,900

2,200 

1,500 

1,180 

650 

550

490 

550 

425 

425 

465

450 

460 

475 

420 

430 

475

15,200 

20, 000 

16,400 

14, 500 

12, 60Q,

11,100 

8,520 

5,430 

5,170 

16, 000

20, 300 

22,400 

21,300 

20, 800 

a 20, 000

a 13, 000 

a 8, 500 

7,260 

a 3, 800 

a 3, 300

a 110 

a 3, 300 

2,650 

2,630 

2,760

2,520 

2,570 

2,600 

2,230 

a 2, 300 

a 2 r 600

291,850

e Estimated

a Computed from estimated concentration graph.
GREEN RIVER BASIN

GREEN RIVER BASIN Continued

GREEN RIVER NEAR JENSEN, UTAH--Continued

Suspended sediment, water year October 1956 to September 1957 Continued

75

Day

1......

2. .....

3. .....

5. .....

7. .....

8. .....

9. .....

10. .....

12. .....

15. .....

16. .....

17. .....

19. .....

22. .....

25. .....

27. .....

29......

31......

Total.

1...... 

2...... 

3...... 

4......

5......

6. .....

8...... 

9. ..... 

10......

13. .....

16. .....

Ifl

19. ..... 

20. .....

22. ..... 

23...... 

24. ..... 

25. .....

26...... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

April

Mean 

discharge 

(els)

2,260 

2,690 

3,060 

3,110 

3,030

2,720 

2,550 

2,590 

2,630 

2,580

2,450 

2,520 

2,990 

3,660 

4,190

5,020 

5,630 

6,220 

7,210 

7,310

6,620 

5,470 

5,340 

6,880 

7,110

6,680 

6,010 

5,380 

4,850 

4,350

133,110

Suspended sediment

Mean 

concentration 

(ppm)

570 

850 

1,200 

1,100 

1,680

1,250 

925 

880 

820 

880

2,020 

2,300 

2,300 

2,330 

2,480

3,180 

1,300 

1,250 

1,350 

1,330

1,240 

940 

1,100 

2,000 

2,000

1,880 

1,600 

1,300 

1,100 

940

Tons 

per 

day

a 3, 500 

a 6, 200 

a 9, 900 

9,240 

13,700

9,180 

6,370 

6,150 

a 5, 800 

a 6, 100

13,400 

a 16, 000 

a 19, 000 

23, 000 

28, 100

43, 100 

a 20, 000 

21,000 

26, 300 

26, 300

22, 200 

a 14, 000 

a 16, 000 

a 37, 000 

a 38, 000

34, 000 

a 26, 000 

a 19, 000 

a 14, 000 

11,000

543, 540

July

22, 700 

24, 100 

23, 900 

23, 400 

22, 800

22, 200 

20, 400 

18,700 

17,700 

17,400

15,700 

14, 500 

14, 600 

14,300 

14, 500

14,700 

14, 200 

13,000 

12,200 

12,000

12,300 

13, 300 

10, 900 

10, 100 

9,710

9,650 

8,620 

7,890 

7,470 

7,210 

6,820

456,970

390 

370 

440 

570 

705

750 

820 

910 

990 

1,000

940 

960 

1,000 

1,100 

1,100

1,150 

850 

410 

373 

1,150

2,700 

525 

740 

625 

765

600 

465 

460 

350 

320 

390

--

23, 900 

24, 100 

a 28, 400 

a 36, 000 

43, 400

a 45, 000 

a 45, 000 

a 46, 000 

47, 300 

47,000

a 40, 000 

a 38, 000 

a 39, 400 

a 42, 000 

a 43, 000

45, 600 

32,600 

14, 400 

12, 300 

37, 300

89, 700 

18,900 

21,800 

17, 000 

20,100

15,600 

10, 800 

9,800 

7,060 

a 6, 200 

7,180

954,840

May

Mean 

discharge 

(cfs)

4,500 

5,670 

7,130 

8,320 

10,100

11,500 

12, 600 

13,700 

14, 700 

16,500

20, 200 

21,000 

21,200 

18,200 

17, 600

19, 300 

17, 500 

15,600 

14, 000 

13,000

13,900 

15,000 

14, 100 

13, 300 

12,700

12,600 

12,300 

12, 000 

12, 500 

14, 100 

15,700

430, 520

Suspended sediment

Mean 

concentration 

(ppm)

1,000 

1,300 

1,500 

1,700 

2,300

2,700 

3,000 

3,110 

2,400 

1,800

3,300 

4,400 

5,350 

2,800 

2,100

3,170 

2,630 

1,460 

975 

1,030

1,200 

1,200 

1,200 

1,200 

1,100

1,100 

1,100 

1,100 

1,100 

1,200 

1,300

Tons 

per 

day

a 12, 000 

a 20, 000 

a 29, 000 

a 38, 000 

a 63, 000

a 84, 000 

100, 000 

115,000 

a 95, 000 

80,200

180, 000 

249, 000 

306, 000 

138,000 

a 100, 000

165, 000 

124, 000 

61,500 

36, 900 

36, 200

a 45, 000 

a 49, 000 

a 46, 000 

a 43, 000 

a 38, 000

a 37, 000 

a 37, 000 

a 36, 000 

a 37, 000 

a 46, 000 

a 55, 000

2,501,800

August

6,600 

6,180 

5,700 

5,400 

5,210

5,060 

4,830 

5,000 

4,730 

4,410

4,260 

3,980 

3,810 

3,540 

3,400

3,350 

3,200 

3,010 

3,060 

2,990

2,900 

2,850 

2,790 

2,960 

2,830

2,790 

2,930 

2,690 

2,680 

2,630 

3,110

118,880

465 

365 

305 

290 

290

290 

305 

430 

360 

480

2,040 

700 

415 

300 

1,940

975 

500 

850 

815 

475

730 

910 

1,740 

1,200 

1,300

985 

1,500 

1,800 

1,530 

1,280 

1,200

--

8,290 

6,090 

4,690 

4,230 

4,080

a 4, 000 

3,980 

5,800 

4,600 

5,720

23,500 

7,520 

4,270 

2,870 

17,800

8,820 

4,320 

6,910 

6,730 

3,830

5,720 

7,000 

13, 100 

9,590 

9,930

7,420 

11,900 

13,100 

11,100 

9,090 

10, 100

246, 100

June

Mean 

discharge 

(cfs)

16,300 

17,400 

19, 100 

20, 400 

22, 700

25,700 

28, 600 

31,100 

33,400 

35, 300

36, 200 

36, 100 

35, 200 

34, 200 

34, 600

35,900 

35,300 

32,400 

29, 300 

24,700

22, 100 

21,400 

21,900 

21,100 

20, 200

19, 600 

20, 000 

20, 400 

20, 900 

21,800

793, 300

Suspended sediment

Mean 

concentration 

(ppm)

1,300 

1,400 

1,500 

1,530 

1,800

2,020 

1,720 

1,230 

1,300 

1,500

1,500 

1,420 

1,600 

1,450 

1,360

1,330 

1,630 

2,200 

2,850 

2,140

1,510 

1,140 

688 

620 

455

380 

410 

420 

455 

460

Tons 

per 

day

a 57, 000 

a 66, 000 

a 77, 000 

84, 300 

a 110, 000

140, 000 

133, 000 

103, 000 

a 120, 000 

a 140, 000

a 150, 000 

138, 000 

152, 000 

134, 000 

127, 000

129, 000 

155,000 

192, 000 

225, 000 

143, 000

90, 100 

65, 900 

40, 700 

35, 300 

24, 800

a 20, 000 

a 22, 000 

a 23, 000 

25,700 

27, 100

2. 949, 900

September

2,930 

2,720 

2,760 

2,800 

2,710

2,590 

2,420 

2,280 

2,170 

2,040

1,950 

1,880 

1,830 

1,770 

1,780

1,780 

1,770 

1,800 

1,870 

1,800

1,780 

1,750 

1,730 

1,800 

1,850

1,850 

1,840 

1,800 

1,760 

1,720

61,530

1,750 

1,300 

810 

600 

680

420 

300 

215 

176 

124

123 

100 

88 

92 

88

68 

80 

110 

170 

137

73 

38 

33 

42

47

19 

29 

33 

30 

34

--

13,800 

a 19, 500 

a 6, 000 

4,540 

4,980

2,940 

1,960 

1,320 

1,030 

683

648 

508 

435 

a 440 

a 420

327 

382 

a 530 

a 860 

666

a 350 

180 

154 

204 

235

95 

144 

160 

143 

158

53,792

Total discharge for year (cfs-days). 

Total load for year (tons)..........

2, 206,763

7, 647,178

a Computed from estimated concentration graph.
GREEN RIVER BASIN Continued 

GREEN RIVER NEAR JENSEN, UTAH Continued

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, In native water; P, plpet; S, sieve; V, visual accumulation tube; W, in 

Date 

of 

collection

Mar. 18, 1957....

Time

2:45 p.m. 

3:00 p.m. 

9:00 a.m. 

4:15 p.m. 

3:30 p.m.

Discharge 

(cfs)

2,220 

20, 600 

36, 400 

36, 000 

6,720

Water 

temperature 

(° F)

44 

68 

64 

63 

76

Suspended sedim

Concentration 

of sample 

(ppm)

1,170 

1,460 

1,390 

1,280 

419

Concentration 

of suspension 

analyzed 

(ppm)

3,700 

560 

660 

3,080 

4,470

Percent finer 

0.002

19 

18

0.004

76 

23 

23 

24 

36

0.008

27 

27

0.016

97 

35 

33 

35 

49

0
GREEN RIVER BASIN Continued 

DUCHESNE RIVER NEAR RANDLETT, U

LOCATION. At gaging station, a quarter of a mile downstream from Uinta River,1J miles southea

Uintah County.

DRAINAGE AREA. 3,920 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1951, November 1956 to Sept

Water temperatures: December 1950 to September 1951, November 1956 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 1,660 ppm Apr. 1-10; minimum, 236 ppm June 5-10

Hardness: Maximum, 696 ppm Apr. 1-10; minimum, 150 ppm June 5-10.

Specific conductance: Maximum daily, 2,990 micromhos Apr. 2; minimum daily, 329 micromhos Ju

Water temperatures: Maximum, 71°F Aug. 7; minimum, freezing point on many days during Novemb

EXTREMES, 1950-51, 1956-57. Dissolved solids (1956-57): Maximum, 1,660 ppm Apr. 1-10, 1957; m

Hardness (1956-57): Maximum, 696 ppm Apr. 1-10, 1957; minimum, 150 ppm June 5-10, 1957.

Specific conductance: Maximum daily, 2,990 micromhos Apr. 2, 1957; minimum daily, 252 microm

Water temperatures: Maximum, 72°F July 28-29, 1951; minimum, freezing point on many days dur

REMARKS. Records of specific conductance of daily samples available in district office at Salt 

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, November 1956 to 

Date of collection

Nov. 7-10, 1956..

Dec. 27-31, 

Jan. 1-3, 1957..

Feb. 26-28,

Apr. 21-30 ......

Mean 

discharge 

(cfs)

306 

268 

320 

242 

175 

351

340

340 

340 

340 

320 

350 

450

499 

359 

208

216 

195 

176

Silica 

(SiO.)

14 

12 

13 

14 

16 

13

12

13 

13 

12 

13 

13 

13

13 

16 

12

15 

12 

12

Iron 

(Fe)

0.00 

.00 

.00 

.00 

.01 

.01

.01

.02 

.01 

.01 

.01 

.02 

.02

.03 

.01 

.01

.06 

.01 

.01

Calcium 

(Ca)

111 

115 

117 

114 

137 

99

73

91 

90 

84 

83 

79 

77

101 

98 

111

128 

107 

107

Magnesium 

(Mg)

57 

61 

60 

56 

74 

52

36

51 

47 

42 

42 

40 

43

69 

58 

67

91 

66 

67

Sodium 

(Na)

187 

194 

180 

169 

205 

129

69

121 

113 

105 

97 

101 

97

201 

156 

196

288 

201 

212

Potassium 

(K)

2.8 

2.8 

2.2 

2.0 

2.6 

2.0

1.5

1.9 

1.9 

1.5 

1.5 

1.5 

2.5

4.1 

3.0 

2.6

4.6 

3.1

2.5

Blear - 

bonats 

(HCO,)

324 

340 

340 

322 

401 

316

283

282 

277 

262 

263 

253 

262

280 

301 

326

336 

322 

322

Sulfate 

(SO,)

509 

541 

501 

473 

589 

375

207

367 

341 

301 

295 

281 

285

577 

450 

554

818 

556 

562

Chloride 

(Cl)

87 

92 

94 

91 

103 

66

22

70 

65 

54 

51 

57 

57

97 

81 

104

146 

105 

112

Fluoride 

(F)

0.5 

.4 

.5 

.6 

.5 

.4

.5

.4 

.4 

.4 

.4 

.4 

.4

.9 

.4 

.3

.8 

.3

.5

Nitrate 

(NO,)

6.5 

2.4 

3.0 

2.6 

2.8 

2.1

1.3

2.4 

2.5 

2.1 

2.1 

2.1 

1.4

2.0 

1.6 

1.7

1.7 

1.7 

.7

B

ro

(B

0
GREEN RIVER BASIN Continued 

DUCHESNE RIVER NEAR RANDLETT, UTAH Cont

Chemical analyses, in parts per million, November 1956 to Septem

Date of collection

May 1-8, 1957.... 

May 9-16, 18-20..

Mav 1 7

May 30-31,

June 11-15, 18-20

Sept. 21-30 ......

Weighted average

Mean 

discharge 

(cfs)

237 

816 

722 

693

1,338 

4,813 

3,448 

3,025 

2,426

1,398 

561 

417 

318 

257 

228 

398

417 

148 

198

a613

Silica 

(SiO,)

16 

20 

19 

18

17 

10 

11 

14 

10

9.3 

12 

13 

14 

17 

19 

21

18 

15 

15

13

Iron 

(Fe)

0.00 

.09

.00

.04 

.06 

.08 

.02 

.09

.10 

.01 

.01 

.01 

.03 

.02 

.05

.02 

.02 

.02

0.05

Calcium 

(Ca)

105 

91 

132 

88

63 

44 

48 

65 

42

51 

67 

87 

103 

116 

100 

96

88 

117 

101

72

Magnesium 

(Mg)

64 

42 

67 

41

25 

10 

16 

28 

14

20 

31 

43 

51 

61 

59 

57

52 

75 

63

34

Sodium 

(Na)

234 

148 

307 

129

59 

23 

36 

63 

31

49 

96 

140 

173 

227 

197 

189

135 

252 

208

96

Potassium 

(K)

2.2 

2 2 

3! 8 

3.8

1.8 

1.9 

1.7 

3.3 

1.5

2.0 

2.3 

3.5 

3.7 

4.1 

3.4 

4.0

2 8 

3^2 

3.2

2.3

Bicarbonate 

(HCO.)

279 

276 

334 

286

234 

142 

157 

206 

142

164 

209 

249 

276 

304 

293 

282

280 

309 

288

222

Sulfate 

(SO,)

620 

378 

802 

334

148 

61 

106 

197 

93

144 

251 

397 

479 

606 

530 

510

410 

694 

562

269

Chloride 

(Cl)

121 

73 

135 

65

27 

13 

18 

31 

16

25 

46 

68 

94 

115 

87 

83

58 

123 

95

48

Fluoride 

(F)

0.4 

.3

.4

.3

.5 

.4 

.5 

.4

.5 

.5 

.5 

.6 

.6 

.6 

.6

.5 

.6 

.6

0.5

Nitrate 

(NO,)

1.8 

2.2 

.1 

1.8

1.8 

2.2 

.8 

1.8 

.6

.1 

.6 

.9 

1.3 

2.7 

2.1 

2.3

2.2 

2.3 

1.7

1.6

Boron 

(B)

0.97 

.55

.60

.38 

.20 

.2

.30 

.19

.67 

.63 

.47 

.2

.77 

.7

.70

.6

.8

.7

0.3

a Represents 98 percent of runoff for water year October 1956 to September 1957.
GREEN RIVER BASIN

GREEN RIVER BASIN Continued

DUCHESNE RIVER NEAR RANDLETT, UTAH Continued

Temperature (°f) of water, November 1956 to September 1957

79

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

Average

Oct. Nov.

_

--

--

..

45

37

38

37

37

38

36

35

33

32

32

33

33

33

32

33

32

33

32

33

33

33

33

33

--

34

Dec.

33

32

33

33

34

33

32

32

32

32

33

33

33

33

32

32

32

32

33

33

33

32

32

32

32

32

32

32

--

32

Jan.

..

33

33

33

33

33

33

32

33

33

32

33

32

32

32

32

32

32

32

33

32

33

33

32

32

32

32

33

32

32

Feb.

32

32

32

32

32

32

32

33

33

33

33

32

32

33

33

33

33

33

33

33

33

33

33

33

33

33

33

34

--

33

Mar.

34

33

33

33

34

34

34

35

36

35

34

34

38

34

35

38

39

43

42

43

44

40

34

33

37

41

38

38

46

48

45

38

Apr.

47

42

40

43

42

47

43

43

46

47

50

49

52

53

51

49

51

54

49

49

49

47

47

45

44

42

45

47

53

52

--

47

May

52

53

55

53

55

58

59

59

57

57

55

53

53

51

51

53

55

58

48

48

50

59

51

52

57

58

58

58

57

57

55

June

59

61

63

62

61

58

58

56

57

57

52

57

58

54

56

52

52

56

59

62

57

54

58

60

61

61

60

62

59

64

58

July

68

64

65

65

65

66

67

65

68

68

68

68

67

67

68

70

70

67

68

68

68

68

68

64

66

66

68

68

70

69

70

67

Aug.

72

69

69

70

70

70

71

66

67

67

68

68

67

68

68

67

66

65

66

68

68

68

66

66

67

65

64

64

63

59

58

67

Sept.

59

58

60

62

63

62

62

61

57

55

55

55

58

57

54

57

55

55

56

57

48

48

49

49

52

52

54

54

55

56

--

56
GREEN RIVER BASIN Continued 

WHITE RIVER NEAR WATSON, UTAH

LOCATION. At gaging station, 100 feet (revised) downstream from bridge on State Highway 45, 1 mile 

Watson, Uintah County.

DRAINAGE AREA. 4,020 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses; December 1950 to September 1957.

Water temperatures: December 1950 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 798 ppm Mar. 21-31; minimum, 275 ppm July 1-10.

Hardness: Maximum, 372 ppm Mar. 21-31; minimum, 174 ppm July 1-10.

Specific conductance: Maximum daily, 1,320 micromhos Mar. 29; minimum daily, 361 micromhos July 

Water temperatures: Maximum, 75°F Aug. 10, 11, 13; minimum, freezing point on many days during N

EXTREMES, 1950-57. Dissolved solids: Maximum, 1,450 ppm Aug. 1, 1953; minimum, 230 ppm June 21-30

Hardness (1954-57): Maximum, 1,410 ppm Aug. 4, 1955; minimum, 156 ppm June 1-10, 1956.

Specific conductance: Maximum daily, 4,450 micromhos Aug. 4, 1955; minimum daily, 319 micromhos 

Water temperatures: Maximum, 88°F Aug. 8, 1954; minimum, freezing point on many days during wint

REMARKS.- Records of specific conductance of daily samples available in district office at Salt Lak

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-10, 1956 ..

Jan. 1-10, 1957 ..

Apr. 1-10 .......

Apr. 11-20 ......

Aor. 21-30. ......

Mean 

discharge 

(cfs)

278 

311 

349 

366 

363 

307

294 

302 

289 

340 

363 

345

321 

412 

481 

463 

580 

452

442 

524 

514

Silica 

(SiO,)

15 

14 

14 

17 

15 

16

16 

15 

16 

17 

17 

18

17 

16 

14 

13 

11 

16

16 

17 

17

Iron 

(Fe)

Calcium 

(Ca)

83 

84 

93 

80 

83 

88

86 

86 

91 

83 

82 

80

79 

79 

71 

79 

78 

92

92 

81 

75

Magnesium 

(Mg)

26 

25 

24 

24 

23 

25

22 

24 

29 

25 

26 

26

25 

22 

26 

30 

32 

35

34 

31 

25

Sodium 

(Na)

87 

81 

84 

83 

94 

98

94 

95 

102 

95 

103 

103

97 

90 

102 

112 

119 

122

122 

99 

78

Potassium 

(K)

2. 6 

4.0 

5.0 

3.0 

4.2 

4.2

3.9 

3.0 

3.0 

2.7 

2.7 

2.7

2.1 

2.1 

2.6 

2.9 

2 9 

3.1

3.7 

2.6 

1.9

Bicarbonate 

(HCO.)

208 

196 

210 

245 

241 

223

186 

231 

288 

239 

237 

240

236 

230 

236 

256 

250 

266

290 

246 

222

Sulfate 

(SO,)

216 

204 

244 

180 

192 

204

196 

200 

208 

186 

196 

194

182 

181 

208 

233 

260 

286

277 

234 

202

Chloride 

(Cl)

80 

72 

63 

69 

74 

87

83 

82 

92 

84 

86 

88

84 

74 

66 

69 

72 

87

77 

68 

54

Fluoride 

(F)

Nitrate 

(NO,)

9.7 

15 

12 

7.9 

20 

44

61 

9.8 

8.8 

11 

15 

6.1

1.7 

2.3 

4.7 

6.0 

2.8 

2.9

3.0 

3.2 

1.7

Boron 

(B)

0.06 

.05

.04 

.07

.07 

.10

.13
May 1-10, 1957...

June 11-12, 14-20

July 21-31, Aug. 1-2

Aug. 10-20 ......

Aug. 21-31 ......

Sept. 21-30 ......

Weighted average

999

3,616

3,810 

3,680

3,571

2,526

1,430 

1,508

890

544

519

1,003

15

14

13

15

16

14

14

15

16

16

15

67 

62

61

61

55 

77

53

51

61

57

67

66

25 

20

24

16

13 

16

17

14

15 

25

24

24

22

19

61 

46

57

33

27 

45

26

28

32

36 

84

59

60

64

62

53

2.7 

2.3

2.8

3.7

2.'4 

12

5.2

3.6

3.2

2.4 

6.6

2.9

4.7

2.8

3.5

232 

225

218

204

183 

218

238

182

186

186 

213

227

232

198

198

212

156 

110

144

75

69 

70

47

54

98

98 

313

157

160

147

147

125

38 

26

32

21

16 

34

24

16

18

24 

29

38

40

42

50

51

36

2.6 

3.2

6.3

2.9

5.9 

76

18

13

5.1

4.2 

2.1

3.4

5.1

12

7.9

8.9

.0

.0

.0

.0

.0

a Calculated from determined constituents.
82 COLORADO RIVER BASIN

GREEN RIVER BASIN Continued

WHITE RIVER NEAR WATSON, UTAH Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement between 3:15 p. m. and 3:45 p. m.J

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

A

age

Oct.

64

64

62

64

64

60

60

58

55

55

_

54

60

58

59

58

55

50

56

52

50

50

48

42

48

45

45

44

42

55

54

Nov.

48 " 46

46

42

39

40

52

50

50

55

54

55

49

42

38

35

34

40

38

36

32

34

33

34

33

34

32

34

32

32

--

41

Dec.

33

34

34

33

34

33

33

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

Jan.

32

32

32

32

36

36

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

Feb.

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

33

32

32

33

32

34

32

35

38

36

32

..

_

--

33

Mar.

36

32

35

32

32

32

35

32

32

35

33

32

32

33

32

34

32

32

32

35

34

38

40

45

48

48

42

44

44

45

42

36

Apr.

40

40

42

42

43

43

42

44

46

46

46

48

46

48

48

50

48

52

48

50

48

48

48

52

52

50

50

48

55

48

47

May

50

60

60

65

55

55

60

65

55

60

55

52

50

52

48

48

50

52

50

52

50

52

50

50

50

55

 50

52

52

55

57

54

June

52

57

55

60

62

56

60

58

58

55

55

60

58

58

56

58

55

55

55

60

58

60

65

65

64

66

64

58

60

60

--

59

July

62

60

55

58

60

64

64

_

65

65

65

62

65

65

68

68

60

62

65

65

60

68

62

64

60

65

62

68

68

62

68

64

Aug.

66

68

65

60

60

68

62

65

60

75

75

68

75

70

72

65

68

68

69

68

68

62

69

64

62

64

62

62

66

60

58

66

Sept.

56

56

64

62

60

62

62

65

60

60-

62

62

60

60

62

60

60

58

56

58

58

54

58

60

62

60

63

62

62

60

--

60
GREEN RIVER BASIN Continued

GREEN RIVER NEAR OURAY, UTAH

LOCATION. At gaging station, 2| miles upstream from Willow Creek and 3 miles southwest of Oura

RECORDS AVAILABLE.--Chemical analyses: December 1950 to September 1952, November 1956 to Septe

Water temperatures: December 1950 to September 1952, November 1956 to September 1957.

Sediment records: December 1950 to September 1955 , December 1956 to September 1957. 

EXTREMES, 1956-57. Sediment concentrations: Maximum daily, 67,000 ppm Aug. 31; minimum daily, 

Sediment loads: Maximum daily, 1,100,000 tons Aug. 31; minimum daily, 267 tons Dec. 18, 24

REMARKS. Records of specific conductance of daily samples available in district office at Salt 

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, November 1956 to Sep

Date of collection

Nov. 19-24, 26-30

1956 ...........

Dec.1-9, 11,13,15..

Dec. 18, 20, 22,

24, 27, 29, 31..

Jan. 2,4, 10 rll, 1957

Jan.17,19,22,24,26

Feb. 6, 25-28. ...

Mar. 1, 7-13, 15

Mar. 16-19,21-30

Apr. 4-9 ........

Apr. 12-15, 17, 19-20

Apr. 21-30 ......

May 1-5 .........

May 6-11, 13 ....

May 19, 21-25 ...

June 1-3, 5-6. . ..

Aug. 5-10 .......

Aug. 12-13, 16-17

19-20..........

Aug. 21-22,27-28

Sept. 6-7,9,12-17

Mean 

discharge 

(cfs)

,240

,300

,300

,350

,350

2,720

4,601

3,055

3,737

4,916

7,424

6,892

17,430

17,320

22, 400

7,302

4,808

4,472

2,887

Silica 

(S102)

12

12

12

13

11

11

15

14

14

15

15

15

16

16

13

fO

lo

16

15

13

Iron 

(Fe)

0.00

.00

.00

.00

.00

.01

.13

.15

.01

.04

.01

20

.18

.10

.02

no 

. UO

.05

.02

.01

Calcium 

(Ca)

83

83

83

82

82

66

68

73

74

71

55

62

46

50

46

63

54

68

59

Magnesium 

(Mg)

38

38

35

34

35

26

25

29

27

25

18

i ft IO

11

13

10

19

18

21

28

Sodium 

(Na)

106

98

94

86

88

86

92

95

87

71

40

48

28

32

21

52

53

74

62

Potassium 

(K)

2.6

2.6

2.6

2.6

2.6

2. 8

2.6

2.6

3 0

3.0

3 0

3 3

2^4

2.0

1.8

2 9

2.7

3.5

2.4

Bicarbonate 

(HCOS )

261

258

260

253

257

206

219

230

218

224

1 fti 100

206

172

175

164

192

177

a 208

b!96

Sulfate 

(SO,)

289

284

255

245

245

225

227

252

251

205

122

133

65

88

57

164

146

188

188

Chloride 

(Cl)

51

45

52

44

47

42

40

45

op 

00

32

1 ft 10

20

12 ,

12

7.8

on &u

22

38

32

Fluoride 

(F)

0.1

.4

.3

.3

.4

.5

.5

.4

.4

.4

.4

.4

.5

.4

.5

.4

2

.4

.3

Nitrate 

(NC S )

1 9

1.9

2 9

3.0

3.0

2.8

3.0

2.1

2 1

2^5

4.0

1.9

1.7

1.1

1.5

6.4

2. 8

4.5

1.8

Boron 

(B)

0.2

.2

.1

.2

.2

.1

.1

.1

.1

.1

n

U

.1

.1

.1

.0

_

3

'.

a Includes 3 parts per million of carbonate (C0 3 ). 

b Includes 8 parts per million of carbonate (CO 3 ).
84 COLORADO RIVER BASIN 

GREEN RIVER BASIN Continued 

GREEN RIVER NEAR OURAY, UTAH Continued 

Temperature (°F) of water, 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

Average

Oct. Nov.

-_

--

..

..

_

32

36

35

35

36

38

36

35

35

35

34

Dec.

34

36

35

35

35

..

34

34

33

~

34

35 _

35

_

34

34

_

33

33

..

33

34

34

Jan.

..

34

34

_

..

34

34

._

..

_

-

..

34

34

_

34

34

34

Feb.

..

--

34

_

"

..

_

_

_

--

_

35

35

35

35

Mar.

35

--

..

35

35

35

35

36

37

39

_

40

40

41

42

44

44

44

42

42

42

43

43

43

44

44

Apr.

..

48

48

46

44

48

48

..

52

56

57

57

.

 58

54

58

53

53

54

51

51

50

50

50

50

54

May

59

61

64

65

65

63

62

60

60

59

58

56

-

--

56

--

54

55

54

52

53

--

June

65

65

67

66

68

-

--

..

~

--

July Aug.

75

74

74

76

76

75

76

77

76

77

77

78

77

76

72

70

Sept.

69

67

69

~

69

65

60

59

65

63

--

--

--

--

--
GREEN RIVER BASIN

GREEN RIVER BASIN Continued

GREEN RIVER NEAR OURAY, UTAH Continued

Suspended sediment, water year October 1956 to September 1957

85

Day

1. .....

2. .....

3. .....

4. .....

5. .....

6. .....

7. .....

8......

9. .....

10. .....

11......

12. ..... 

13. ..... 

14. ..... 

15. .....

16......

17. .....

18. ..... 

19...... 

20......

21. .....

22. .....

24...... 

25. .....

26. .....

27. .....

28...... 

29......

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

&..... 

9. .....

ia .....

11. ..... 

12. ..... 

13. ..... 

14. ..... 

15. .....

19. ..... 

2<X .....

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31......

Total.

October

Mean 

discharge 

(cfs)

1,000

1, 100 

1,200 

1, 800

37,700

Suspended sediment

Mean 

concentration 

(ppm)

--

Tons 

per 

day

a 500

alOO 

a 900 

93,200

35,500

January

1,350

41,850

124 

136 

129

128 

110

101

124 

71

71 

153

152

-

 a 410

12,710

November

Mean 

discharge 

(cfs)

 1,800

2,140 

2,100

2,030 

1,990 

1,860 

1,810 

1,360

1,200 

1,100 

1, 100 

1,100 

1,120

1,120 

1,130 

1,180 

1,230 

1,300

48,270

Suspended sediment

Mean 

concentration 

(ppm)

429 

375

307 

293 

303 

229

351 

288 

271 

204 

220

-

Tons 

per 

day

a 3, 200

4,800

2,100 

1,380

995 

870 

900 

680 

e880

1,060 

879 

863 

677 

772

77,656

February

1,400

, 1,600

1,650 

1,750

1,870 

2,000 

2,100 

2,300 

2,600

2,900 

3,200 

3,300

51, 470

84

518

716 

715 

3,440

-

8320

a 720

a 1,500

3,640

5,610 

6,180 

30,600

65, 990

December

Mean 

discharge 

(cfs)

1,300

40, 300

Suspended sediment

Mean 

concentration 

(ppm)

178 

222 

193 

251 

209

306 

236 

215

103

103 

236 

128

76 

96

79 

76

88 

89 

97

-

Tons 

per 

day

625 

779 

677 

881 

734

1,070 

828 

755 

e610 

e470

362 

e360 

362 

828 

449

e390 

e330 

267 

e300 

337

e310 

277 

e270 

267 

e280

e290 

309 

e310 

312 

e330 

340

14,709

March

3,800 

4,300 

4,700 

4,500 

4,300

4,200 

4,500 

5,100 

5,400 

5,200

4,900 

4,550 

4,440 

4,070 

3,520

3,400 

3,300 

3,200 

3,100 

3,150

3,000 

3,100 

3,360 

3,160 

3,060

3,010 

2,820 

2,800 

2,750 

2,710 

2,800

116, 200

1,610

1,950 

1,910 

3,310 

3,260

3,300 

3,400 

3,220

3,020

3,500 

1,760 

1,750 

2,530

2,270 

1,900 

2,610 

2,180 

1,780

1,360 

1,120 

1,170 

1,170 

1,150 

1,200

--

16, 500 

a 23, 000

23, 700 

26, 300 

48, 300 

45, 800

43,700 

41,800 

38,600 

636,000 

28,700

32, 100 

15,700 

15, 100 

21, 200 

e 20, 000

18,400 

15,900 

23, 700 

18,600 

14,700

11,100 

8,530 

8,850 

8,690 

8,410 

b9, 100

714,480

e Estimated.

a Computed from water-sediment discharge curves.

b Computed from estimated concentration graph.
86 COLORADO RIVER BASIN

GREEN RIVER BASIN Continued

GREEN RIVER NEAR OURAY, UTAH Continued

Suspended sediment, water year October 1956 to September 1957 Continued

Day

3. .....

4. .....

5. .....

6......

9. .....

10. .....

12......

15......

17. .....

18. .....

20. .....

25......

31......

Total.

1. ..... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9. ..... 

10......

11...... 

12. ..... 

13...... 

14. ..... 

15......

18. .....

20......

22. ..... 

23. .....

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

April

Mean 

discharge 

(cfs)

3,300 

3,800 

3,750 

3,800 

3,980

3,970 

3,710 

3,520 

3,440 

3,420

3,370 

3,250 

3,180 

3,370 

4,050

4,720 

5,690 

6,300 

7,000 

7,870

8,510 

8,040 

7,150 

6,580 

7,540

8,300 

8,040 

7,330 

6,700 

6,050

159,730

Suspended sediment

Mean 

concentration 

(ppm)

1,600 

2,400 

2,100 

2,190 

2,030

1,620 

1,600 

1,480 

1,400 

1,400

1,400 

1,390 

1,370 

1,660 

1,780

2,000 

2,860 

2,800 

2,720 

2,800

2,300 

2,080 

1,760 

1,640 

1,690

1,520 

1,400 

1,440 

1,430 

1,380

-

Tons 

per 

day

b. 14, 000 

b 25, 000 

b 21, 000 

22, 500 

21,800

17, 400 

16, 000 

14, 100 

13, 000 

b 13, 000

b 13, 000 

12,200 

11,800 

15,100 

19 ? 500

b. 25, 000 

43, 900 

b 48, 000 

51,400 

59, 500

52, 800 

45,200 

34, 000 

29, 100 

34, 400

34, 100 

30, 400 

28, 500 

25, 900 

22, 500

814, 100

July

29, 200 

30, 200 

31,100 

30, 600 

30, 000

29, 100 

28,400 

26, 400 

24, 400 

23,200

22, 300 

19, 800 

18, 800 

18,800 

17,800

17,400 

17,700 

17,400 

16,400 

15,500

15,100 

15,300 

14, 600 

13,300 

12, 500

11,900 

11,700 

10, 600 

9,710 

9,320 

8,900

597,430

1,400 

1,400 

1,400 

1,400 

1,400

1,400 

1,400 

1,400 

1,500 

1,500

1,600 

1,700 

1,700 

1,800 

1,800

1,830 

1,900 

1,900 

2,000 

2,000

2,000 

2,000 

2,100 

2,150 

2,000

2,300 

2,300 

2,000 

1,300 

1,200 

1,100

Total discharge for year (cfsTotal load for year (tons) ....

b 110, 000 

b 110, 000 

b 120, 000 

b 120, 000 

b 110, 000

b 110, 000 

b 110, 000 

b 100, 000 

b 99, 000 

b 94, 000

b 96, 000 

b 91, 000 

b 86, 000 

b 91, 000 

b 87, 000

86, 000 

b 91, 000 

b 89, 000 

b 89, 000 

b 84, 000

b 8 2, 000 

b 83, 000 

b 83, 000 

77, 200 

b 68, 000

b 74, 000 

b 73, 000 

b 57, 000 

b 34, 000 

b 30, 000 

b 26, 000

2,660,200

May

Mean 

discharge 

(cfs)

5,410 

5,290 

6,230 

7,930 

9,600

12,100 

14, 500 

16, 100 

17,300 

17,800

22,000 

23,400 

22, 200 

21,100 

19,800

20,400 

21,200 

19,100 

18, 100 

17,000

16, 800 

17,600 

17,900 

17,200 

16, 300

16, 000 

15,600 

15, 200 

15,000 

15,700 

17, 600

497,460

Suspended sediment

Mean 

concentration 

(ppm)

1,290 

1,100 

1,460 

1,880 

2,040

3,240 

3,510 

3,600 

3,600 

3,880

7,980 

9,900 

8,600 

6,800 

4,640

5,300 

5,900 

4,100 

3,280 

2,600

2,580 

3,840 

3,250 

2,920 

2,990

2,700 

2,200 

1,900 

1,700 

2,000 

2,600

-

Tons 

per 

day

18,800 

15,700 

24, 600 

40, 300 

52,900

106, 000 

137, 000 

156, 000 

168, 000 

186, 000

474, 000 

b 630, 000 

515,000 

b 390, 000 

248, 000

b 290, 000 

b 340, 000 

b 210, 000 

160, 000 

b 120, 000

117,000 

182, 000 

157, 000 

136,000 

132,000

b 120, 000 

b93, 000 

b78, 000 

669,000 

84, 800 

b 2 10, 000

5,571,100

August

8,420 

7,900 

7,410 

6,950 

6,800

7,600 

7,950 

7,620 

7,430 

6,410

5,890 

5,670 

5,460 

5,160 

4,920

4,610 

4,570 

4,440 

4,200 

4,340

4,540 

4,740 

4,820 

4,360 

4,040

4,220 

4,270 

4,340 

4,270 

4,590 

5,780

173,720

1,000 

880 

790 

710 

1,000

6,100 

15, 600 

13, 200 

11,200 

4,000

1,700 

1,250 

1,200 

1,100 

1,200

1,350 

1,500 

1,800 

3,850 

10, 300

10, 100 

12,800 

14,000 

6,900 

3,800

5,600 

6,900 

4,600 

5,550 

17, 000 

67.000

b 23, 000 

b 19, 000 

b 16, 000 

b 13, 000 

18, 400

125, 000 

335, 000 

272, 000 

225,000 

69, 200

b 27, 000 

19, 100 

17,700 

b 15,000 

b 16, 000

16, 800 

18, 500 

b 22, 000 

43, 700 

121,000

124,000 

164, 000 

b 180, 000 

b 81, 000 

b 41, 000

b 64, 000 

79, 600 

53,900 

64, 000 

b 210, 000 

bl, 100, 000

3, 593, 900

June

Mean 

discharge 

(cfs)

19, 200 

19, 600 

21, 300 

23,100 

25,000

26,900 

28, 300 

31,400 

34,400 

37,100

40, 300 

42, 500 

43,100 

43, 100 

41,900

41,500 

42, 500 

42, 500 

40, 600 

37, 500

32,900 

30, 400 

29,000 

28,400 

27, 100

26, 500 

26, 200 

26,800 

27,900 

28, 400

965,400

Suspended sediment

Mean 

concentration 

(ppm)

3,080 

2,950 

3,130 

3,200 

3,400

3,620 

3,300 

2,600 

2,100 

1,800

1,400 

1,200 

1,200 

1,200 

1,200

1,300 

1,200 

1,200 

1,200 

1,300

1,300 

1,400 

1,400 

1,400 

1,400

1,400 

1,450 

1,400 

1,400 

1,400

-

Tons 

per 

day

160, 000 

156,000 

180,000 

b. 200, 000 

230, 000

263, 000 

b 2 50, 000 

b 220, 000 

b 200, 000 

b 180, 000

b 150, 000 

b 140, 000 

b 140, 000 

b 140, 000 

b 140, 000

b. 150, 000 

b 140, 000 

b. 140, 000 

132,000 

b. 130, 000

b!20,000 

bllO.OOO 

bllO.OOO 

h 110, 000 

b 100, 000

b 100, 000 

103, 000 

b 100, 000 

bllO.OOO 

bllO.OOO

4, 514, 000

September

5,120 

4,470 

3,880 

3,660 

3,610

3,500 

3,370 

3,250 

3,140 

3,070

2,970 

2,840 

2,730 

2,670 

2,590

2,580 

2,560 

2,550 

2,540 

2,600

2,630 

2,640 

2,640 

2,590 

2,580

2,640 

2,670 

2,660 

2,660 

2,620

90, 030

34, 000 

9,000 

3,700 

2,300 

2,200

1,950 

1,800 

1,500 

1,100 

740

620 

590 

620 

560 

525

570 

538 

450 

400 

360

380 

390 

370 

360 

360

340 

320 

320 

320 

310

lays) .............................................................

b 490, 000 

bllO.OOO 

b 39, 000 

b23, 000 

b21,000

18, 400 

16,400 

b. 13, 000 

9,330 

b6, 100

b5,000 

4,520 

4,570 

4,040 

3,670

3,970 

3,720 

b3, 100 

b.2,700 

b.2, 500

b2,700 

b 2, 800 

b 2, 600 

b 2, 500 

b 2, 500

b.2, 400 

b.2,300 

b 2, 300 

b2, 300 

2,190

808,610

2,819,560 

18,882,955

b Computed from estimated concentration graph.
GREEN RIVER BASIN Continued 

GREEN RIVER NEAR OURAY, UTAH--Continued

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, in 

Date 

of 

collection

Mar. 8, 1957. . . .

Sept. 16 ........

Time

11:00 a.m. 

11:15 a.m. 

11:15 a.m. 

11:00 a.m. 

12:15 p.m. 

1:30 p.m.

2:30 p.m. 

2:15 p.m. 

1:00 p.m. 

2:00 p.m. 

11:30 a.m. 

1:30 p.m.

1:30 p.m. 

1:00 p.m. 

8:00 a.m. 

8:30 a.m. 

11:30 a.m. 

5:00 p.m.

Discharge 

(cfs)

a 5, 100 

a 3, 200 

2,820 

3,530 

7,980 

6,120

17,500 

16, 800 

19, 200 

6,650 

8,130 

7,430

7,430 

4,610 

4,310 

4,340 

3,520 

2,580

Water 

temperature 

(°F)

35 

42 

43 

48 

53 

54

59 

54 

64 

75 

74 

76

76 

76 

72 

70 

69 

65

Suspended sedi

Concentration 

of sample 

(ppm)

1,920 

1,710 

1,120 

1,480 

2,880 

1,280

3,450 

2,580 

2,790 

667 

12,800 

13, 300

13, 300 

1,320 

7,200 

4,330 

2,330 

554

Concentration 

of suspension 

analyzed 

(ppm)

3,580 

5,100 

4,200 

4,430 

2,980 

4,470

3,960 

3,530 

3,430 

4,610 

5,220 

4,190

4,020 

3,720 

3,610 

3,490 

4,180 

4,480

Percent finer 

0.002 0.004

61 

56 

59 

58 

43 

50

32 

28 

33 

50 

59 

54

7 

48 

58 

53 

55 

15

0.008 0.016

75 

77 

76 

78 

62 

72

51 

41 

49 

69 

87 

86

84 

68 

83 

75 

68 

25

0

a Daily mean discharge.
GREEN RIVER BASIN Continued 

PRICE RIVER AT WOODSIDE, UTAH

LOCATION. At gaging station at bridge on U. S. Highway 50 at Woodside, Emery County, and 20 mile

DRAINAGE AREA. 1,500 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: December 1946 to September 1949, February 1951 to Septemb

Water temperatures: February 1951 to August 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 6,470 ppmNov. 21-30; minimum, 1,210 ppm Aug. 22.

Hardness: Maximum, 2,480 ppm Dec. 21-31: minimum, 712 ppm Aug. 22.

Specific conductance: Maximum daily, 7,880 micromhos Nov. 20; minimum daily, 1,650 micromhos J

Water temperatures: Maximum, 74°F June 4; minimum, freezing point on many days during November 

EXTREMES, 1951-57. Dissolved solids: Maximum, 8,220 Ppm Oct. 11, 1951; minimum, 592 ppm May 21-

Hardness: Maximum, 3,010 ppm Dec. 11, 1951; minimum, 353 ppm June 1-3, 6-10, 1952.

Specific conductance: Maximum daily, 8,540 micromhos Dec. 11, 1951; minimum daily, 814 micromh

Water temperatures: Maximum, 90°F July 10-11, 1954; minimum, freezing point on many days durin

REMARKS. Records of specific conductance of daily samples available in district office at Salt L

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water j

Date of collection

Oct. 1-10, 1956...

Oct. 21-31 .......

Dec. 1-10........

Jan. 1-10, 1957...

Mar. 21-31 ......

Mean 

discharge 

(cfs)

17.1 

18.1 

22.5 

23.7 

18.2 

14.0

14.0 

14.0 

14.0 

14.0 

18.0 

18.0

19.9 

41.8 

66.4 

55.0 

40.0 

36.2

Silica 

(SiO,)

6.5 

4.8 

5.1 

7.1 

6.4 

12

9.9 

11 

11 

14 

12 

13

12 

8.6 

11 

9.6 

8.1 

7.8

Iron 

(Fe)

Calcium 

(Ca)

269 

293 

291 

287 

317 

333

345 

361 

381 

305 

301 

261

244 

232 

261 

281 

269 

257

Magnesium 

(Mg)

302 

306 

295 

333 

336 

372

353 

358 

372 

311 

305 

281

268 

199 

238 

272 

255 

238

Sodium 

(Na)

965 

980 

953 

1,040 

1,090 

1,140

1,090 

1,110 

1,080 

900 

880 

757

735 

681 

903 

995 

830 

675

Potassium 

(K)

10 

10 

10

11

12 

12

11 

11 

11 

9.8 

9.4 

9.3

8.8 

8.2 

8.0 

8.0 

8.0 

8.0

Bicarbonate 

(HCO,)

276 

312 

290 

313 

333 

358

432 

481 

537 

404 

430 

434

393 

358 

346 

374 

372 

376

Sulfate 

(S04 )

3,420 

3,520 

3,510 

3,770 

3,870 

4,280

4,080 

4,100 

4,120 

3,340 

3,300 

2,810

2,750 

2,390 

3,070 

3,390 

2,920 

2.600

Chloride 

(Cl)

108 

108 

120 

105 

122 

132

125 

130 

130 

115 

113 

101

95 

79 

94 

102 

98 

88

rear October 1956 t

Fluoride 

(F)

Nitrate 

(NO,)

4.6 

7.2 

8.2 

9.2 

9.4 

15

17 

13 

15 

13 

13 

13

12 

11 

12

8.4 

6.9 

7.0

Boron 

(B)

0.53 

.49 

.46 

.49 

.49 

.56

.55 

.56 

.58 

.55 

.51 

.48

.44 

.34 

.31 

.35 

.33 

.30
Apr. 1-8, 1957 ...

Apr. 14-20.......

Aug. 18-21, 23-31.

Weighted average

Weighted average

39.2

43.7

42.0

501 

945

a95. 1

b!03

13 

6.2

14

15

10

12

7.6

7.2

7.6

10

11

277

200

91 Q

232

226

212

205

199

162

1 *\fi

156

219

166

159

627

538

538

369

611

507

486

9.4

10

10

7.'6

8.9

8.7

8.3

334

340

318

314

295

299

2,370

1,890

1,900

1,940

2,330 

682

2,260

1,910

1,820

84

64

63

73

60

58

2.3

2.3

1.7

1.1

11

8.8

5.8

5.4

.3

.3

.3

.3

0.3

0.3

a Represents 89 percent of runoff for water year October 1956 to September 1957.

bIncludes estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 1
90 COLORADO RIVER BASIN

GREEN RIVER BASIN Continued

PRICE RIVER AT WOODSIDE, UTAH Continued 

Temperature (°F) of water, October 1956 to August 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

Average

Oct.

..

--

52

55

54

54

54

46

46

49

47

46

50

45

41

42

43

45

43

41

41

Nov.

40

33

35

33

33

33

33

33

35

34

35

36

36

37

33

32

32

33

32

32

32

32

33

33

32

32

32

32

32

32

--

33

Dec.

32

32

33

34

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

Jan.

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

Feb.

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

33

33

34

36

38

39

39

39

40

_

--

34

Mar.

40

39

39

40

40

39

39

40

40

39

39

39

40

41

41

42

42

42

39

39

39

38

40

42

43

43

44

45

45

45

41

Apr.

45

45

45

45

45

45

45

46

45

44

45

46

45

46

46

47

47

49

49

49

50

50

51

51

51

51

51

51

52

52

--

48

May

52

53

54

53

53

52

55

53

54

54

_

_

~

_

_

_

--

..

_

--

..

67

67

68

70

71

~

June

72

73

73

74

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

71

_

70

70

70

70

July

71

_

70

71

71

71

70

71

71

71

69

71

70

71

71

71

71

71

70

71

71

70

69

69

68

70

69

68

67

70

69

70

Aug.

68

68

69

68

69

68

64

68

69

68

69

69

68

69

69

69

68

68

67

68

70

65

68

69

..

_

_

_

_

--

68

Sept.
GREEN RIVER BASIN Continued 

GREEN RIVER AT GREEN RIVER, UTAH

LOCATION. At gaging station, 1 mile southeast of the town of Green River, Emery County, 22 miles 

from mouth. 

DRAINAGE AREA. 40,600 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: August 1928 to September 1957.

Water temperatures: May 1949 to September 1957.

Sediment records: May 1930 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 1,150 ppm Aug. 7; minimum, 212 ppm July 1-10.

Hardness: Maximum, 698 ppm Aug. 7; minimum, 133 ppm July 1-10.

Specific conductance: Maximum daily, 1,710 micromhos Aug. 30; minimum daily, 313 micromhos July 

Water temperaturee: Maximum, 79°F Aug. 2, 3; minimum, freezing point on many days during Decemb

Sediment concentrations: Maximum daily, 27,000 ppm Aug. 31; minimum daily, 33 ppm Oct. 8.

Sediment loads: Maximum daily, 646,000 tons Aug. 7; minimum daily, 94 tons Oct. 6, 8. 

EXTREMES, 1928-57. Dissolved solids: Maximum, 2,010 ppm Sept. 29, 1943; minimum, 194 ppm June 21

Hardness: Maximum, 698 oom Aug. 7, 1957; minimum, 128 ppm June 21-30, 1933. . , , , .

Specific conductance (1941-57): Maximum daily, 2,420 micromhos Sept. 29, 1943; minimum daily, 2

Water temperatures (1949-57): Maximum, 82°F July 31, Aug. 5, 6, 1949, July 20, 1953, July 16, 2

winter months .

Sediment concentrations (1930-57): Maximum daily, 63,100 ppm July 11, 1936; minimum daily 20 p

Sediment loads (1930-57): Maximum daily, 2,230,000 tons July 11, 1936; minimum daily, 54 tons Se

REMARKS. Records of specific conductance of daily samples available in district office at Salt La

October 1956 to September 1957 given in WSP 1513. Flow affected by ice Nov. 20, 24-28, Dec. 1 

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-10, 1956 . .

Jan. 1-10, 1957 ..

Feb. 21-28. ......

Mean 

discharge 

(cfs)

1,026 

1,116 

1,557 

1,856 

1,928 

1,214

1,278 

1,279 

1,315 

1,379 

1,367 

1,320

1,472 

1,633 

2.424

Silica 

(SiO.)

7.1 

6.5 

7.6 

8.8 

10 

11

14 

13 

13 

11 

12 

12

12 

12 

11

Iron 

(Fe)

Calcium 

(Ca)

68 

71 

77 

80 

78 

90

87 

79 

85 

84 

67 

55

66 

59 

79

Magnesium 

(Mg)

34 

36 

34 

36 

35 

40

39 

43 

43 

43 

46 

51

44 

46 

37

Sodium 

(Na)

103 

105 

113 

117 

106 

114

111 

114 

107 

100 

92 

97

93 

92 

111

Potassium 

(K)

2.9 

2.9 

2.9 

3.2 

2.7 

2.7

3.1 

3.0 

2.9 

2.8 

2.5 

2.4

2.5 

2.3 

2.8

Bicarbonate 

(HCO.)

202 

208 

215 

231 

244 

270

260 

236 

274 

274 

254 

236

245 

234

Sulfate 

(S04 )

288 

306 

324 

340 

302 

342

329 

357 

315 

301 

283 

287

277 

273 

335

Chloride 

(Cl)

48 

50 

50 

53 

44 

46

52 

50 

52 

49 

44 

47

46 

44 

42

Fluoride 

(F)

Nitrate 

(NOS)

1.1 

1.2 

2 3 

2! 3 

2.0 

2.5

2.3 

2.4 

2 3 

2^3 

2.2 

2.2

2.5 

2.0 

2.6

Boron 

(B)

0.15 

.22

.24 

.21

.19
GREEN RIVER BASIN Continued

GREEN RIVER AT GREEN RIVER, UTAH Continu

Chemical analyses, in parts per million, water year October 1956 to Sept

Date of collection

Mar. 1-10, 1957..

Aug. 6, 8-10 ....

Sept. 16-30 ......

Weighted average

Mean 

discharge 

(cfs)

4,481 

4,163 

2,981 

3,579 

3,539 

6,853

8,633 

20, 250 

15,570 

26,260 

40,970 

27,080

27,280 

18,340 

15,700 

12,100 

8,140 

8,262

10,800 

5,155 

5,074 

5,788 

3,163 

2,612

b7,654

Silica 

(S10J

9.5 

12 

11 

12 

13 

14

17 

17 

14 

13 

12 

13

12 

12 

13 

13 

11 

13

13 

14 

14 

14 

11 

9.1

13

Iron 

(Fe)

Calcium 

(Ca)

55 

65 

77 

71 

73 

57

55 

42 

49 

42 

41 

42

39 

45 

59 

48 

48 

76

235 

58 

71 

162 

66 

67

51

Magnesium 

(Mg)

32 

28 

33 

32 

32 

20

19 

17 

17 

12 

10 

10

8.8 

10 

13 

13 

14 

21

27 

22 

23 

36 

32 

29

17

Sodium 

(Na)

107 

106 

107 

108 

99 

50

49 

36 

41 

25 

24 

24

18 

24 

50 

35 

36 

67

76 

62 

75 

104 

73 

83

44

Potassium 

(K)

3.0 

2.5 

2.8 

2.8 

2.8 

2.8

3.7 

3.4 

3.5 

3.3 

3.4 

2.2

1.7 

2.2 

3.6 

2.6 

2.6 

4.6

6.3 

3.5 

2.6 

4.8 

3.8 

2.6

2.9

Bicarbonate 

(HCO.)

185 

200 

235 

218 

218 

184

186 

174 

179 

156 

145 

144

136 

142 

160 

158 

153 

175

160 

179 

204 

203 

201 

202

168

Sulfate 

(SOJ

285 

274 

296 

292 

290 

148

132 

93 

110 

69 

63 

67

52 

79 

150 

99 

110 

245

691 

190 

229 

554 

240 

255

129

Chlorids 

(Cl)

42 

42 

46 

42 

42 

20

24 

14 

14 

9.8 

9.5 

8.0

7.2 

10 

19 

15 

16 

24

18 

24 

28 

29 

30 

36

18

Fluoride 

(F)

Nitrate 

(NO,)

3.1 

3.9 

3.1 

3.1 

3.1 

4.9

4.3 

3.8 

3.1 

2.3 

2.3 

.9

1.0 

.8 

.1 

.5 

.7 

.5

.4 

.9 

.2 

.8 

.9 

.2

2.0

Boron 

(B)

0.09 

.11

.09 

.08

.07

.14 

.18

-

a Calculated from determined constituents.

b Represents 99 percent of runoff for water year October 1956 to September 1957.
GREEN RIVER BASIN

GREEN RIVER BASIN Continued

GREEN RIVER AT GREEN RIVER, UTAH Continued

Temperature f f) of water, water year October 1956 to September 1957

93

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

Average

Oct.

61

65

65

66

63

66

66

65

_

64

62

60

59

59

58

58

57

54

54

..

50

51

51

51

51

47

46

46

58

Nov.

44

44

43

41

38

41

41

38

45

46

44

46

45

42

41

42

43

36

36

34

34

34

33

35

36

33

34

37

38

35

39

Dec.

35

34

36

34

35

38

36

33

33

~

33

32

33

34

33

33

34

33

32

33

33

32

32

32

32

32

32

32

33

Jan.

32

32

32

32

32

32

33

33

_

32

32

32

33

33

33

33

33

32

32

32

32

32

33

33

33

32

33

33

33

32

32

Feb.

32

32

32

32

32

..

32

_

34

33

35

34

36

37

37

38

40

36

40

40

41

41

38

41

-

40

41

40

37

Mar.

37

39

38

37

36

40

38

39

38

40

39

40

40

41

39

..

42

44

43

48

49

46

46

47

46

49

45

49

52

54

43

Apr.

48

50

48

49

50

49

50

50

52

53

55

56

58

58

55

60

58

55

..

54

52

51

51

49

50

49

52

48

55

52

May

58

62

59

64

64

62

61

64

64

62

59

55

55

56

55

55

54

55

54

55

53

53

56

56

56

58

59

62

62

63

63

59

June

64

66

66

69

67

68

68

68

68

63

64

_

65

65

--

59

59

60

62

63

63

63

65

67

67

67

67

68

68

69

--

65

July

69

71

71

71

71

71

71

70

71

70

72

73

73

74

76

74

75

74

74

74

74

73

73

73

73

74

75

72

76

76

73

Aug.

77

79

79

77

76

76

70

74

75

75

76

76

77

76

77

77

77

78

72

74

75

77

74

74

76

74

72

64

64

75

Sept.

_

..

-

..

_

_

71

68

67

64

63

66

_

_

.-

-

_

63

62

-,

68

68

"
94 COLORADO RIVER BASIN 

GREEN RIVER BASIN Continued 

GREEN RIVER AT GREEN RIVER, UTAH Continued 

Suspended sediment, water year October 1956 to September 1957

Day

1. .....

2. .....

3. .....

4. .....

5. .....

6. .....

7. .....

8...... 

9. .....

10......

11. .....

12. .....

13. ..... 

14. ..... 

15. .....

16. .....

18. ..... 

19. ..... 

20......

22. .....

24. ..... 

25. .....

27. .....

28. ..... 

29. .....

31. .....

Total.

L..... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

8...... 

10. .....

1L.....

13. ..... 

14. ..... 

15. .....

16. .....

18. ..... 

19...... 

20......

22...... 

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

October

Mean 

discharge 

(cfs)

1,020 

1,000 

988 

1,000 

1,020

1,020 

1,030 

1,060 

1,060 

1,060

1,070 

1,070 

1,090 

1,100 

1,120

1,130 

1,140 

1,140 

1,140 

1,160

1,180 

1,180 

1,200 

1,270 

1,310

1,390 

2,090 

1,860 

1,780 

1,820 

2,050

38, 548

Suspended sediment

Mean 

concentration 

(ppm)

111 

98 

72 

53 

44

34 

36 

33 

34 

35

36 

38 

37 

40 

39

41 

49 

41 

47 

50

53 

62 

240 

329 

140

97 

180 

300 

2,770 

4,800 

4,400

-

Tons 

per 

day

306 

265 

192 

143 

121

94 

100 

94 

a 97 

100

104 

110 

109 

119 

118

125 

151 

126 

145 

a 160

a 170 

a 200 

a 780 

1,130 

495

364 

1,020 

1,510 

13,300 

23,600 

24,400

69,748

January

1,270 

1,320 

1,370 

1,400 

1,450

1,440 

1,410 

1,400 

1,380 

1,350

1,400 

1,450 

1,460 

1,400 

1,350

1,300 

1,260 

1,310 

1,360 

1,380

1,400 

1,400 

1,360 

1,330 

1,310

1,300 

1,280 

1,270 

1,280 

1,290 

1,300

41,980

133 

188 

111 

157 

176

168 

131 

124 

120 

118

147 

114 

165 

149 

167

160 

133 

129 

123 

95

133 

107 

81 

84 

90

105 

104 

120 

85 

100 

96

--

456 

670 

411 

593 

689

653 

499 

469 

e450 

430

556 

446 

650 

563 

609

562 

452 

456 

452 

354

503 

404 

297 

302 

e320

368 

359 

411 

294 

348 

337

14,363

November

Mean 

discharge 

(cfs)

1,990 

1,870 

1,870 

1,910 

1,860

1,840 

1,860 

1,820 

1,780 

1,760

1,740 

1,760 

1,840 

1,990 

2,090

2,110 

2,070 

1,970 

1,910 

1,800

1,530 

1,330 

1,130 

1,070 

1,100

1,150 

1,120 

1,170 

1,240 

1,300

49, 980

Suspended sediment

Mean 

concentration 

(ppm)

2,150 

550 

625 

480 

385

420 

880 

960 

520 

420

350 

300 

290 

290 

280

278 

265 

250 

240 

230

230 

190 

170 

260 

240

155 

125 

105 

112 

125

--

Tons 

per 

day

11,600 

2,780 

3,160 

2,480 

1,930

2,090 

4,420 

4,720 

2,500 

2,000

1,640 

a 1,400 

1,440 

1,560 

1,580

1,580 

1,480 

1,330 

1,240 

1,120

950 

682 

519 

a750 

712

481 

378 

332 

375 

439

57, 668

February

1,310 

1,330 

1,400 

1,440 

1,460

1,510 

1,530 

1,560 

1,580 

1,600

1,610 

1,600 

1,600 

1,650 

1,630

1,620 

1,630 

1,650 

1,580 

1,760

1,840 

1,860 

1,970 

2,150 

2,440

2,790 

3,060 

3,280

50,440

109 

103 

81 

87 

92

95 

101 

95 

85 

86

143 

125 

116 

138 

120

120 

110 

112 

130 

185

135 

340 

470 

458 

540

535 

455 

610

--

386 

370 

306 

338 

363

e390 

417 

e400 

363 

372

622 

540 

501 

615 

528

525 

484 

499 

555 

879

671 

1,710 

2,500 

2,660 

3,560

4,030 

3,760 

5,400

33,744

December

Mean 

discharge 

(cfs)

1,300

1,200 

1,180

1,140 

1,240 

1,330 

1,250 

1,200

1,180 

1,250

I 1,400

1,350 

1,300 

1,320 

1,350

1,350 

1,320 

1,310 

1,300 

1,250 

1,220

40, 040

Suspended sediment

Mean 

concentration 

(ppm)

> 182

202 

170

134 

669 

105 

105 

95

93 

111

109

132 

230 

178 

214

96 

142 

140 

140 

139 

127

-

Tons 

per 

day

639

654 

e500

412 

2,240 

377 

354 

e310

296

375

412

481 

807 

634 

780

350

506 

e500 

e490 

469 

418

17,713

March

3,510 

4,040 

4,510 

4,700 

4,800

4,610 

4,230 

4,160 

4,860 

5,390

5,430 

5,320 

4,580 

4,450 

4,350

3,920 

3,540 

3,540 

3,360 

3,140

3,310 

3,170 

3,000 

3,220 

3,200

2,980 

2,900 

2,870 

2,740 

2,710 

2.690

119,230

755 

820 

1,160 

1,320 

1,380

1,430 

1,210 

1,450 

2,060 

2,280

2,060 

2,320 

2,750 

2,480 

2,060

2,000 

2,010 

1,830 

2,500 

1,880

1,380 

1,230 

1,450 

1,480 

1,180

1,450 

1,430 

1,280 

880 

580 

560

7,160 

8,940 

14,100 

16,800 

17,900

17,800 

13,800 

16,300 

27,000 

33,200

30, 200 

33,300 

34,000 

29, 800 

24,200

a21,000 

19,200 

17,500 

22,700 

15,900

12,300 

10,500 

11,700 

12,900 

10,200

11,700 

11,200 

9,920 

6,510 

4,240 

4.070

526,040

e Estimated.

a Computed from estimated concentration graph.
GREEN RIVER BASIN 

GREEN RIVER BASIN Continued 

GREEN RIVER'AT GREEN RIVER, UTAH Continued 

Suspended sediment, water year October 1956 to September 1957--Continued

95

Day

1......

3. .....

4. .....

7. ..... 

8. .....

9. .....

10. .....

11......

12. .....

14. ..... 

15. .....

17. .....

19. .....

20. .....

23......

24. .....

25. ..... 

26......

27......

28. .....

30. .....

31...... 

Total.

L..... 

2...... 

3...... 

4...... 

5......

8...... 

9. ..... 

10. .....

13. ..... 

14. ..... 

15......

1 n

19. ..... 

20. .....

91

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28...... 

29. ..... 

30. ..... 

31. ..... 

Total.

April

Mean 

discharge 

(cfs)

2,660 

2,870 

4,040 

3,950 

3,590

3,770 

4,010 

3,890 

3,620 

3,390

3,310 

3,280 

3,250 

3,140 

3,090

3,340 

4,070 

4,830 

5,840 

6,450

7,050 

7,800 

7,560 

6,790 

6,200

6,410 

7,280 

7,360 

7,050 

6,450

146,340

Suspended sediment

Mean 

concentration 

(ppm)

655 

790 

1,290 

2,510 

3,670

2,300 

1,680 

1,450 

1,180 

1,020

960 

860 

700 

615 

680

850 

1,030 

1,350 

1,700 

1,900

2,310 

3,130 

3,110 

2,250 

1,840

1,450 

1,350 

2,150 

1,000 

1,050

--

Tons 

per 

day

4,700 

6,120 

14,100 

26,800 

35,600

23,400 

18,200 

15,200 

11,500 

9,340

8,580 

7,620 

6,140 

5,210 

5,670

7,670 

11,300 

17,600 

a 27, 000 

a 33 ,000

44, 000 

65,900 

63,500 

41,200 

30, 800

25, 100 

26,500 

42,700 

19,000 

18,300

671,750

July

26,700 

27,300 

28,500 

29,400 

29,100

28,600 

27,800 

27,100 

25,100 

23,200

22,100 

21,100 

18,800 

18,100 

17,700

16,900 

16,400 

17,200 

16,800 

15,700

14,600 

14,000 

14,100 

13,500 

12,700

12,000 

11,600 

11,300 

10,400 

9,720 

9,230

586,750

1,990 

2,130 

2,210 

2,320 

2,140

1,890 

2,040 

2,140 

2,000 

2,870

2,520 

2,070 

1,950 

1,880 

2,500

3,230 

2,920 

4,400 

3,980 

4,200

3,320 

2,400 

2,050 

2,600 

1,460

1,740 

2,150 

1,390 

1,150 

900 

810

"

Total discharge for year (cfsTotal load for year (tons) ....

143,000 

157,000 

170,000 

184,000 

168,000

146, 000 

153,000 

157,000 

136,000 

160,000

150,000 

118,000 

99,000 

91,900 

119,000

147,000 

129,000 

204,000 

181,000 

178,000

131,000 

a 91, 000 

78,000 

94,600 

50, 100

56,400 

67,300 

42, 400 

32,300 

23,600 

20, 200

3,698,000

May

discharge 

(cfs)

5,910 

5,430 

4,860 

5,030 

6,380

7,880 

9,940 

11,900 

13,600 

15,400

17,200 

21,200 

24,200 

24,200 

22,100

19,200 

20,000 

20,300 

17,600 

16,500

15,500 

15,600 

16,700 

17,300 

17,000

15,500 

14,900 

14, 500 

14, 400 

14,400 

15, 500

460, 130

Suspended sediment

Mean 

concentration 

(ppm)

950 

1,000 

1,020 

945 

940

1,390 

2,210 

3,200 

3,840 

3,790

3,420 

3,550 

7,030 

8,230 

6,150

4,900 

4,940 

4,260 

3,900 

4,250

3,500 

3,060 

3,300 

3,800 

3,900

3,650 

2,800 

2,950 

2,710 

2,700 

3,200

-

Tons 

per 

day

15,200 

14,700 

13,400 

12,800 

16,200

29,600 

59,300 

103,000 

141,000 

158,000

159,000 

203,000 

459,000 

538,000 

367,000

254,000 

267,000 

233, 000 

185,000 

189,000

146,000 

129, 000 

149, 000 

177,000 

179, 000

153,000 

113,000 

115,000 

105,000 

105,000 

134,000

4,817,200

August

8,920 

8,540 

8,040 

7,720 

7,480

7,360 

10,800 

9,800 

8,290 

7,600

6,640 

5,840 

5,560 

5,430 

5,090

5,030 

4,740 

4,540 

4,450 

4,230

4,930 

6,630 

5,460 

5,060 

4,510

4,290 

4,640 

4,960 

4,450 

6,990 

6,750

194,770

690 

700 

670 

590 

2,550

5,100 

20,800 

11,800 

13,700 

9,900

5,700 

5,500 

3,000 

1,460 

1,970

1,820 

1,890 

1,270 

1,130 

1,170

9,900 

20,700 

9,400 

4,200 

6,500

6,800 

6,800 

12,100 

8,300 

24,400 

27,000

~

16,600 

16,100 

14, 500 

12,300 

51, 500

101,000 

s 646, 000 

312,000 

307,000 

203,000

102,000 

86, 700 

45,000 

21,400 

27,100

24,700 

24,200 

15,600 

13,600 

13,400

132,000 

s 400, 000 

139,000 

57,400 

79,200

78, 800 

85, 200 

162,000 

a 100, 000 

8585,000 

492,000

4,364,300

June

Mean 

discharge 

(cfs)

17,600 

19,300 

20, 200 

22,000 

24, 200

26, 400 

29,300 

31,800 

34,700 

37, 100

38,800 

40,000 

41,300 

41,100 

41,600

41,600 

41,400 

42,600 

42,100 

39,200

35,200 

28,700 

27,300 

26,600 

26,200

25, 200 

24,900 

24,900 

25,600 

26,200

943, 100

Suspended sediment

Mean 

concentration 

(ppm)

3,580 

3,600 

3,860 

3,750 

3,870

3,900 

3,860 

3,540 

3,320 

3,360

3,530 

3,170 

2,580 

2,650 

2,600

2,730 

2,560 

2,900 

2,770 

2,830

3,570 

3,900 

2,440 

2,400 

2,720

2,610 

2,490 

2,320 

2,310 

2,120

-

Tons 

per 

day

170,000 

188,000 

211,000 

223,000 

253,000

278,000 

305,000 

304,000 

311,000 

337,000

370,000 

342,000 

288,000 

294,000 

a 310, 000

307,000 

286,000 

334,000 

315,000 

300,000

339,000 

302,000 

180,000 

172,000 

192,000

178,000 

167,000 

156,000 

160, 000 

150,000

7,722,000

September

6,820 

6,710 

5,600 

4,860 

4,320

4,130 

4,040 

3,920 

3,740 

3,480

3,280 

3,110 

2,920 

2,840 

2,770

2,690 

2,610 

2,610 

2,560 

2,590

2,560 

2,610 

2,660 

2,660 

2,660

2,610 

2,590 

2,590 

2,590 

2,590

101,720

25,000 

24,000 

16,000 

11,000 

7,100

5,600 

5,000 

4,000 

2,600 

1,600

950 

820 

660 

550 

510

425 

390 

395 

380 

340

320 

300 

278 

240 

242

230 

222 

238 

244 

240

--

Hays). ............................................................

a 460, 000 

a 430, 000 

a 240, 000 

a 140, 000 

a 83, 000

a 62, 000 

a55,000 

a 42, 000 

26,300 

15-,000

8,410 

6,890 

5,200 

a 4, 200 

3,810

3,090 

2,750 

2,760 

2,630 

a2,400

a2,200 

a2,100 

2,000 

,720 

,740 

,620 

,550 

,660 

,710 

a ,700

1,613,460

2,773,028 

23,605,986

s Computed by subdividing day.

a Computed from estimated concentration graph.
GREEN RIVER BASIN Continued 

GREEN RIVER AT GREEN RIVER, UTAH Continued

Particle-size analyses, of suspended sediment, water year October 195

(Methods of analysis: B, bottom withdrawal tube; D, decantation; P, pipet; S, 

W, in distilled water; C, chemically dispersed; M, mechanically 

Date 

of 

collection.

Mar. 4, 1957 ....

Sept. 18 ........

Time

12:50 p.m. 

11:40 a.m. 

12:00 m. 

11:00 a.m. 

10:30 a.m.

12:15p. m. 

12:00 m. 

2:50 p. m. 

2:20 p. m. 

11:10 a.m.

12:05 p. m. 

12:00 m. 

1 :30 p. m. 

8:05 p.m. 

3:15 p. m. 

4:15 p.m.

5:30 p. m. 

5:15 p.m. 

12:00 m. 

6:30 a.m. 

5:50 p.m. 

8:15 p.m.

Discharge 

(cfs)

4,610 

3,340 

2,710 

4,130 

6,820

24, 300 

15,500 

17,000 

15,400 

20,100

37,100 

41,200 

26,400 

26,800 

26,900 

17,700

8,800 

12,000 

9,140 

4,380 

3,650 

2,610

Water 

temperature 

(°F)

37 

49 

49 

58 

51

53

58 

66

66 

59 

67 

69 

70 

76

77 

74 

75 

72 

70 

67

Suspended sed

Concentration 

of sample 

(ppm)

1,210 

1,300 

844 

933 

2,230

7,330 

3,070 

3,980 

3,540 

3,550

3,200 

2,640 

2,600 

2,070 

1,900 

2,730

617 

25, 500 

5,740 

6,110 

2,300 

358

Concentration 

of suspension 

analyzed 

(ppm)

5,690 

3,530 

4,400 

2,540 

5,540

3,810 

6,000 

3,420 

3,580 

3,390

2,730 

3,280 

3,220 

3,130 

2,980 

4,150

4,390 

3,730 

3,880 

3,670 

4,260 

588

Percent fine

0.002

27

0.004

49 

77 

74 

67 

52

26 

28 

32 

34 

29

26 

16 

17 

13 

19 

37

27 

41 

42 

65 

61 

37

0.008

44

0.016

71 

95 

92 

87 

75

42 

43 

45 

52 

43

34 

23 

24 

22

30 

54

46 

69 

67 

90 

73 

53
GREEN RIVER BASIN Continued 

SAN RAFAEL RIVER NEAR GREEN RIVER, UTAH

LOCATION. At gaging station, 15 feet upstream from bridge on State Highway 24, 15 miles southwest o

moutb.

DRAINAGE AREA. 1,690 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses November 1946 to September 1949, November 1950 to September 19

Water temperatures: July to September 1949, October 1950 to September 1957.

Sediment records: March 1948 to September 1949, October 1950 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 4,910 ppm Nov. 21-30; minimum, 487 ppm June 21-30.

Hardness: Maximum, 2,090 ppm Nov. 21-30; minimum, 298 ppm June 21-30.

Specific conductance: Maximum daily, 6,060 micromhos Apr. 29; minimum daily, 689 micromhos June 29

Water temperatures: Maximum, 85°F July 31; minimum, freezing point on many days during November t

Sediment concentrations: Maximum daily, 85,600 ppm Aug. 30; minimum daily, no flow on many days.

Sediment loads: Maximum daily, 292,000 tons Aug. 30; minimum daily, 0 tons on many days. 

EXTREMES, 1948-49, 1950-57. Dissolved solids: Maximum, 5,650 ppm July 11, 13-18, 1954; minimum, 48

Hardness: Maximum, 2,280 ppm July 11, 13-18, 1954; minimum, 298 ppm June 21-30, 1957.

Specific conductance.: Maximum daily, 7,230 micromhos July 15, 1954; minimum daily, 689 micromhos J

Water temperatures (1949, 1950-57): Maximum, 95°F July 11, 1954; minimum, freezing point on many 

Sediment concentrations (1948-57): Maximum daily, 115,000 ppm Aug. 4, 1951; minimum daily, no flow

Sediment loads (1948-57): Maximum daily, 786,000 tons Aug. 4, 1951; minimum daily, 0 tons on many 

REMARKS. Records of specific conductance of dailv samples available in district office at Salt Lake 

October 1956 to September 1957 given in WSP 1W.3. Flow affected by ice Nov. 15 to Feb. 15.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 29, Nov. 1-10, 

1956 ...........

Dec. 1-10 ........

Dec. 31, Jan. 1-10,

Jan. 21-31........

Feb. 2, 7, 9 ......

Feb. 11-20 .......

Feb. 21-28 .......

Mar. 21-31.'......

Mean 

discharge 

(cfs)

11.1 

14.2 

12.0

18.6 

15.0 

15.0

21.8 

30.0 

26.8

23.0 

48.2 

141 

69.2 

33.4 

22.5

Silica 

(SiOJ

8.7 

10

, 10

11 

11 

13

13 

12 

11

10 

9.0 

9.8 

9.8 

8.5 

7.7

Iron 

(Fe)

Calcium 

(Ca)

361 

313 

401

345 

353 

349

287 

257 

242

228 

188 

232 

253 

297 

325

Magnesium 

(Mg)

250 

226 

265

226 

202 

197

174 

162 

165

151 

141 

119 

175 

199 

233

Sodium 

(Na)

771 

654 

771

630 

574 

549

428 

417 

407

354 

332 

424 

534 

607 

655

Potassium 

(K)

12 

11 

12

9.8 

9.4 

9.5

8.9 

7.9 

7.6

7.2 

6.7 

6.9 

7.8 

8.1 

9.4

Bicarbonate 

(HCO,)

322 

239 

365

340 

396 

396

388 

352 

338

374 

335 

270 

288 

334 

332

Carbonate 

(CO,)

Sulfate 

(SO,)

3,070 

2,690 

3,150

2,630 

2,380 

2,310

1,900 

1,760 

1,750

1,530 

1,360 

1,640 

2,140 

2,400 

2.690

Chloride 

(Cl)

111 

94 

119

91 

84 

8«

70 

59 

62

54 

47 

48 

63 

75 

92

Fluoride 

(F)

Nitrate 

(NO,)

2.1 

2.8 

3.8

4.2 

4.4 

5.1

3.5 

4.1 

3 8

4.1 

3.7 

3.9 

3.1 

1.8 

1.2

B

r

(

0.

.

.

.

.

.

.

.
GREEN RIVER BASIN Continued

SAN RAFAEL RIVER NEAR GREEN RIVER, UTAH Con

Chemical analyses, in parts per million, water year October 1956 to Septe

Date of collection

Apr. 1-10, 1957...

Aug. 21, 23-25, 28 

Aug. 22, 26-27,

Sept. 1-10........

Sept. 11-20.......

Sept. 21-30 .......

Weighted average

Mean 

discharge 

(els)

24.4 

21.5 

24.0 

60.6 

110 

222 

457

1,631 

1,715 

1,418 

784 

339 

154

186 

250 

68.5 

175

476 

133 

38.1 

38.8

238

Silica 

(SiO.)

6.2 

7.9 

7.6 

13 

12 

11 

9.7

9.2 

8.7 

7.8 

7.7 

9.3 

12

13 

14 

12 

14

15 

12 

11 

8.7

9.4

Iron 

(Fe)

Calcium 

(Ca)

313 

293 

305 

301 

214 

202 

128

88 

83 

69 

80 

160 

190

277 

257 

248 

427

257 

214 

236 

265

128

Magnesium 

(Mg)

219 

207 

221 

165 

117 

104 

56

34 

34 

31 

40 

81 

111

129v 

56^ 

135 

91

56 

96 

170 

202

59

Sodium 

(Na)

642 

627 

710 

600 

394 

354 

168

66 

61 

50 

74 

193 

327

388 

181 

363 

215

175 

284 

464 

542

146

Potassium 

(K)

9.4 

12 

12 

11 

8.1 

9.4 

6.1

3.6 

2.7 

2.1 

2.4 

6.6 

8.8

11 

9.6 

11 

12

8.7 

8.1 

9.4 

10

4.6

Bicarbonate 

(HCO,)

322 

255 

279 

269 

287 

280 

292

210 

226 

219 

236 

262 

230

266 

228 

217 

209

216 

234 

238 

271

234

Carbonate 

(CO,)

Sulfate 

(SO.)

2,590 

2,480 

2,780 

2,300 

1,490 

1,400 

632

314 

278 

208 

311 

882 

1,380

1,710 

1,030 

1,690 

1,620

992 

1,260 

1,990 

2,230

642

Chloride 

(Cl)

86 

88 

92 

75 

42 

35 

19

12 

10 

9.0 

12 

25 

37

46 

26 

44 

40

23 

45 

58 

62

21

Fluoride 

(F)

Nitrate 

(NO,)

1.3 

.4 

.6 

2 9 

2.5 

2.2 

1.5

2.2 

2.9 

2.3 

1.9 

1.5 

2.3

1.7 

1.7 

1.9 

2.2

1.4 

1.9 

1.3 

1.3

2.3

B

r

(

0.
GREEN RIVER BASIN 

GREEN RIVER BASIN Continued

SAN RAFAEL RIVER NEAR GREEN RIVER, UTAH Continued 

Temperature (°F) of water, 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

Average

Oct.

43

Nov.

42

38

36

35

36

40

42

40

39

38

48

40

39

39

35

34

35

34

--

32

35

35

35

36

35

34

35

34

--

37

Dec.

..

35

33

34

36

34

34

33

32

32

32

32

32

32

32

33

33

33

34

32

33

32

32

32

32

32

32

33

33

32

33

33

Jan.

33

34

34

34

34

35

34

34

33

33

33

34

35

36

35

33

33

33

33

33

32

-_

32

32

32

32

32

32

32

32

--

33

Feb.

..

32

_

32

33

33

33

33

33

34

35

34

34

43

_.

44

39

45

45

44

46

42

Mar.

46

46

48

47

44

48

52

53

55

55

44

48

43

40

49

44

54

50

55

55

41

50

56

45

45

60

60

55

50

Apr.

47

50

56

50

54

57

54

56

53

65

53

66

60

56

58

64

57

52

61

62

49

48

58

60

52

65

60

52

58

 --

56

May

55

60

60

60

70

70

68

70

70

60

55

51

65

57

63

65

58

60

64

57

65

58

58

58

65

65

64

64

65

64

62

June

.-

72

62

64

64

60

60

61

63

56

55

55

58

58

55

55

60

64

68

66

..

64

65

70

66

65

68

68

62

July

69

73

73

73

71

75

76

78

78

76

75

79

80

80

80

75

72

74

73

..

76

73

77

80

82

83

83

82

85

77

Aug.

81

80

84

79

74

72

75

75

76

78

77

78

80

80

82

78

80

80

77

79

68

75

73

74

69

70

70

54

55

75

Sept.

63

69

70

72

68

72

70

71

70

73

73

70

70

68

67

67

65

65

55

67

68

68

68

69

70

64

71

68
100 COLORADO RIVER BASIN 

GREEN RIVER BASIN Continued

SAN RAFAEL RIVER NEAR GREEN RIVER, UTAH Continued 

Suspended sediment, 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.

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.

October

Mean 

discharge 

(cfs)

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

3.0 

.5

0 

0 

1.0 

3.4 

3.6 

15

26.5

Suspended sediment

Mean 

concentration 

(ppm)

210 

90

0

n

130 

210 

220 

430

"

Tons 

per

day

e2 

<et)

0 

0 

(et) 

2 

a2 

a 17

23.7

Jannary

 15

30 

23

820

298

369 

382

--

12

30

24

810

November

Mean 

discharge 

(cfs)

12

8 2 

7.6 

9.1 

8.0

7.6 

11 

19 

18 

18

18 

17 

17 

15 

10

12 

15 

14

12

380.5

Suspended sediment

Mean 

concentration 

(ppm)

400 

298 

328 

318 

264

202 

263 

385 

378 

390

350 

318 

258 

260 

185

206 

494 

278 

276

196 

192

246 

672

274 

261 

312 

232 

232

--

Tons 

per 

day

13

7 

7 

8 

6

4 

8 

20 

18 

19

n

15 

12 

11 

5

7 

20 

10

9

315

February

23

26 

30 

33 

38 

43

47 

48 

51 

67 

99

132 

150 

188 

146 

144

136 

122 

109

1,839

370

2,230 

1,150 

566 

922 

1,340

1,140 

1,100 

1,250 

2,100 

5,000

8,300 

23,900 

21,300 

14,000 

7,300

5,200 

4,100 

2,900

-

e23

157 

93 

50 

95 

156

145 

a 140 

172 

380 

1,340

a 3, 000 

s 10, 100 

sll,300 

5,520 

2,840

1,910 

1,350 

853

39,831

December

Mean 

discharge 

(cfs)

12 

20

25 

15

501

Suspended sediment

Mean 

concentration 

(ppm)

372 

291

568 

353

-

Tons 

per 

day

12 

16

38 

14

526

March

98 

90 

81 

76 

70

63 

60 

53 

51 

50

47 

43 

38 

33 

31

28 

28 

28 

29 

29

26 

25 

23 

22 

22

21 

22 

22 

22 

21 

21 ..

1,273

3,000 

2,500 

1,970 

1,670 

1,380

1,140 

900 

760 

750 

680

650 

600 

680 

520 

480

440 

350 

300 

280 

280

290 

290 

225 

150 

130

620 

500 

360 

380 

650 

500

794 

608 

431 

343 

261

194 

146 

109 

103 

92

82 

70 

70 

46 

40

a33 

a 26 

23 

22 

a 22

20 

a 20 

14 

a9 

8

35 

30 

21 

23 

37 

28

3,760

e Estimated.

s Computed by subdividing day.

t Less than 0.50 ton.

a Computed from estimated concentration graph.
GREEN RIVER BASIN 

GREEN RIVER BASIN Continued

SAN RAFAEL RIVER NEAR GREEN RIVER, UTAH Continued 

Suspended sediment, water year October 19S6 to September 1957 Continued

101

Day

1. .....

3. .....

4. .....

5. .....

6. .....

7. .....

9. .....

10. ..... 

11......

12. .....

13. ..... 

14. ..... 

15. .....

16......

17. .....

18. ..... 

19. ..... 

20. .....

23. ..... 

24. ..... 

25. .....

27. .....

29. .....

30...... 

31...... 

Total.

L..... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9...... 

10. .....

IL .....

13. ..... 

14. ..... 

15. .....

16. .....

18. ..... 

19. ..... 

20. .....

O4

23. ..... 

24...... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

April

Mean 

discharge 

(cfs)

22 

22 

24 

24 

22

22 

31 

25 

27 

25

21 

20 

19 

19 

22

20 

23 

24 

25 

22

22 

23 

23 

25 

35

26 

21 

19 

20 

26

699

Suspended sediment

Mean 

concentration 

(ppm)

520 

430 

440 

338 

185

135 

775 

320 

175 

170

150 

150 

158 

175 

140

95 

100 

90 

82 

95

90 

80 

245 

210 

390

198 

382 

260 

255 

4,320

--

Tons 

per 

day

31 

26 

29 

22 

11

8 

65 

22 

13 

11

8 

8 

8 

9 

8

5 

6 

6 

6 

6

a5 

5 

15 

14 

37

14 

22 

13 

s!7 

s423

873

July

1,260 

1,050 

912 

818 

673

577 

532 

448 

367 

307

290 

290 

275 

262 

207

174 

155 

410 

660 

668

352 

228 

176 

140 

122

110 

124 

100 

102 

125 

109

12,024

5,200 

3,300 

2,900 

3,700 

3,000

2,600 

2,100 

1,500 

1,700 

1,300

1,200 

600 

700 

900 

1,600

1,200 

700 

7,740 

31,400 

28,400

12,000 

8,300 

4,500 

1,000 

750

500 

800 

500 

1,250 

2,500 

7,300

-

Total discharge for year (cfsTotal load for year (tons)

17,700 

9,360 

7,140 

8,170 

5,450

4,050 

3,020 

1,810 

1,680 

1,080

940 

470 

520 

637 

894

564 

293 

s 12, 500 

s 65, 600 

s 52, 000

all, 000 

5,110 

2,140 

a 380 

249

148 

268 

135 

344 

844 

2,150

216,646

May

discharge 

(cfs)

70 

60 

41 

36 

42

51 

57 

75 

101 

73

122 

132 

95 

68 

70

134 

169 

117 

94 

102

114 

101 

88 

144 

589

300 

223 

182 

211 

271 

457

4,389

Suspended sediment

Mean 

concentration 

(ppm)

32,100 

26,000 

11,600 

6,200 

4,800

3,500 

3,700 

5,020 

9,500 

6,300

6,300 

6,800 

3,500 

1,800 

1,800

6,500 

21,000 

7,400 

2,800 

2,800

4,700 

3,500 

2,100 

6,130 

22,200

15,500 

8,600 

9,400 

7,200 

8,300 

13,800

~

Tons 

per 

day

s7,850 

4,210 

1,280 

603 

544

482 

a 570 

si, 140 

2,590 

1,240

2,080 

2,420 

898 

330 

340

2,350 

9,580 

2,340 

711 

771

1,450 

954 

499 

s2,660 

a 38, 700

12,600 

5,180 

4,620 

4,100 

6,070 

17,000

136,162

August

82 

72 

64 

64 

71

524 

422 

365 

244 

140

100 

84 

76 

76 

64

86 

57 

52 

45 

45

45 

446 

285 

140 

103

469 

272 

300 

300 

775 

595

6,463

5,300 

1,800 

700 

650 

800

65,600 

29,200 

30,000 

29,000 

13, 500

3,660 

1,720 

880 

760 

1,400

7,600 

2,350 

1,100 

280 

420

980 

26,800 

32,200 

19,200 

5,600

31,800 

16,700 

50,100 

45,700 

85,600 

48,400

-

1,170 

350 

121 

112 

153

s 161, 000 

s 37, 700 

29, 600 

19,100 

5,100

988 

390 

181 

a 160 

242

1,760 

362 

154 

34 

51

119 

s 51, 900 

s 26, 500 

7,260 

1,560

s 47, 600 

12, 300 

42, 100 

38, 400 

s 292, 000 

s 88, 400

866,867

June

Mean 

discharge 

(cfs)

509 

643 

1,000 

1,280 

1,640

1,960 

2,060 

2,340 

2,460 

2,420

2,710 

2,250 

1,930 

2,080 

1,900

1,660 

1,420 

1,140 

1,010 

1,050

1,200 

1,280 

1,280 

1,260 

1,320

1,500 

1,560 

1,630 

1,650 

1,500

47,642

Suspended sediment

Mean 

concentration 

(ppm)

16,000 

13,000 

8,200 

6,000 

5,700

5,700 

5,300 

5,300 

5,900 

6,800

8,300 

6,700 

5,400 

5,700 

7,000

7,900 

6,900 

4,400 

2,500 

3,700

4,300 

5,000 

5,300 

4,500 

5,400

6,800 

6,800 

6,800 

7,200 

6,000

--

Tons 

per 

day

a 22, 000 

22,600 

22, 100 

20, 700 

25, 200

30, 200 

29, 500 

33,500 

39, 200 

44, 400

60, 700 

40,700 

28,100 

32,000 

35,900

35, 400 

26,500 

13,500 

6,820 

10,500

a 14, 000 

a 17, 000 

18,300 

15,300 

19,200

27,500 

28,600 

29,900 

32, 100 

a 24, 000

805, 420

September

357 

242 

167 

131 

98

91 

71 

69 

57 

51

48 

45 

43 

38 

42

36 

35 

33 

30 

31

36 

33 

38 

37 

42

40 

44 

42 

36 

40

2,103

29,700 

21,100 

15, 400 

6,600 

1,200

915 

650 

529 

398 

262

230 

205 

205 

157 

169

143 

171 

139 

123 

80

258 

91 

176 

192 

194

170 

201 

143 

137 

130

-

28,600 

13,800 

6,940 

a 2, 300 

318

225 

125 

98 

61 

36

e30 

25 

24 

16 

19

14 

16 

12 

10

7

25 

8 

18 

19 

22

18 

24 

16 

13 

14

52,853

78, 160 

2,124,086.7

e Estimated.

s Computed by subdividing day.

a Computed from estimated concentration graph.
GREEN RIVER BASIN--Continued 

SAN RAFAEL RIVER NEAR GREEN RIVER, UTAH-- Contin

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, me

N, in native water; P, plpet; S, sieve; V, visual accumulation tube; W, in d

Date 

of 

collection

Feb. 25, 1957 . . .

July 3 ..........

July 4 ..........

July 26 .........

Aug. 19.........

Time

2:30 p.m. 

2:10 p.m. 

2:45 p.m. 

2:30 p.m. 

4:40 p.m.

3:00 p.m. 

6:00 p.m. 

2:20 p.m. 

9:00 a.m. 

6:10 p.m.

7:30 p.m. 

7:00 p.m. 

10:00 a.m. 

8:10 p.m. 

5:30 p.m.

Discharge 

(cfs)

136 

51 

90 

972 

2,400

1,370 

1,300 

866 

779 

408

262 

201 

110 

73 

a 45

Water 

temperature 

(°F)

41 

70 

61 

70 

58

58 

67 

70 

65 

76

79 

80 

73 

81

Suspended sedim

Concentration 

of sample 

(ppm)

5,200 

2,940 

2,730 

8,310 

6,430

6,760 

4,540 

2,650 

2,440 

1,270

658 

1,910 

601 

4,370 

253

Concentration 

of suspension 

analyzed 

(ppm)

3,760 

3,660 

3,840 

4,330 

3,310

3,260 

4,040 

3,170 

2,940 

2,590

2,610 

4,120 

2,910 

4,150 

514

Percent finer th

0.002

53

0.004

55 

77 

52 

35 

23

17 

15 

16 

19 

21

23 

67 

53 

84 

68

0.008

83

0.016

88 

96 

85 

53

47

29 

23 

25 

28 

32

38 

90 

77 

98 

91

0.0

95 

99 

93 

67 

58

42 

38 

37 

4

50

5

93 

87 

99 

93

a Daily mean discharge.
COLORADO RIVER MAIN STEM 

COLORADO RIVER AT KITE, UTAH

LOCATION.--At gaging station at Kite, Garfield County, a quarter of a mile upstream from Trachyte Cr

stream from Dirty Devil River, and 84 miles upstream from San Juan River. 

DRAINAGE AREA. 76,600 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1957.

Water temperatures: May 1940 to September 1957.

Sediment records: October 1948 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 2,900 ppm Aug. 31; minimum, 219 ppm July 1-10.

Hardness: Maximum, 1,620 ppm Aug. 31; minimum, 136 ppm July 1-10.

Specific conductance: Maximum daily, 3,110 micromhos Aug. 31; minimum daily, 317 micromhos July 9

ures: Maximum, 78°F Aug. 4 17-18; minimum, 33°F Feb. 6. Water temperatures: Maximum, 78°F Aug. 4 17-18; minimum, 33'F reo. t>.

Sediment concentrations: Maximum daily, 36,500 ppm Aug. 31; minimum daily, 75 ppm Oct. 1.

Sediment loads: Maximum daily, 2,500,000 tons Aug. 31; minimum daily, 541 tons Oct. 1. 

EXTREMES, 1948-57. Dissolved solids (1950-57): Maximum, 2,900 ppm Aug. 31, 1957; minimum, 219 ppm 

Hardness: Maximum, 1,620 ppm Aug. 31, 1957; minimum, 136 ppm July 1-10, 1957.

Specific conductance (1950-57): Maximum daily, 3,110 micromhos Aug. 31, 1957; minimum daily, 317 m

Water temperatures (1949-57): Maximum, 83°F July 31, 1951, July 14, 29, 1953, July 27, 1955; mini

Sediment concentrations: Maximum daily, 36,500 ppm Aug. 31, 1957; minimum daily, 49 ppm Jan. 10, 

Sediment loads: Maximum daily, 2,500,000 tons Aug. 31, 1957; minimum dailv. 447 tons Jan. 10, 195

REMARKS. Records of specific conductance of daily samples available in district office at Salt Lake 

1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-10, 1956 ....

Jan. 1-10, 1957.....

Feb. 1-10. .........

Mar 1-10

Mar. 21-31. ........

Mean 

discharge 

(cfs)

2,837 

2,996 

3,544 

4,809 

4,783 

4,067

3,975 

3,603 

3,366 

3,841 

4,446 

3,928

3,799 

4,995 

5,688 

7,062 

7,403 

5.941

Silica 

(SiOa)

8.8 

9.0 

11 

12 

13 

13

14 

14 

15 

13 

13 

12

14 

12 

13 

11 

11 

11

Iron 

(Fe)

Calcium 

(Ca)

150 

148 

157 

149 

135 

133

127 

131 

135 

132 

119 

120

119 

119 

109 

87 

73 

75

Magnesium 

(Mg)

62 

63 

57 

55 

50 

49

54 

55 

55 

50 

46 

49

45 

42 

45 

53 

46 

53

Sodium 

(Na)

184 

184 

192 

187 

157 

157

171 

179 

189 

176 

164 

163

165 

168 

159 

153 

146 

149

Potassium 

(K)

6.3 

6.3

5.7 

5.7 

4.8 

4.8

5.8 

6.2 

6.2 

6.2 

5.6 

5.6

6.3 

6.5 

6.0 

5.3 

5.2 

5.3

Bicarbonate 

(HCO,)

200 

209 

194 

216 

221 

221

215 

210 

243 

234 

226 

216

214 

218 

214 

210 

198 

209

Carbonate 

(CO,)

Sulfate 

(SO,)

624 

632 

645 

593 

495 

489

511 

525 

525 

485 

423 

457

430 

418 

434 

410 

360 

380

Chloride 

(Cl)

150 

145 

153 

144 

122 

132

145 

158 

162 

162 

155 

140

162 

158 

130 

110 

105 

115

Fluoride 

(F)

Nitrate 

(NO,)

8.5 

9.5 

10 

11 

9.1 

9.9

12 

13 

13 

14 

11 

9.4

11 

13 

11 

8.5 

7.8 

7.5

B

r

(

0.

.

.

.

.

.

.

.

.
COLORADO RIVER MAIN STEM Continued

COLORADO RIVER AT HITE, UTAH Continued

Chemical analyses, In parts per million, water year October 1956 to Septem

Date of collection

Apr. 1-10, 1957.... 

Apr. 11-20. ........

Aug. 7-13..........

Weighted average. .

Mean 

discharge 

(cfs)

6,804 

10.100 

16, 200 

25,900 

44, 940 

36, 390

71, 530 

92, 570 

76, 190 

77,820 

49, 980 

36, 580

25,430 

24, 240 

14,870 

14,480 

25,600 

15,900 

7,577 

6,104

19,740

Silica

(sio.)

13 

12 

14 

13 

13 

17

13 

13 

11 

13 

12 

15

13 

14 

14 

14 

12 

15 

13 

11

13

Iron 

(Fe)

Calcium 

(Ca)

94 

91 

65 

73 

56 

64

48 

46 

48 

43 

46 

65

63 

116 

85 

141 

573 

135 

106 

116

69

Magnesium 

(Mg)

35 

32 

19 

17 

12 

16

10 

9.0 

7.1 

6.8 

7.1 

12

13 

21 

21 

29 

47 

32 

35 

45

17

Sodium 

(Na)

139 

127 

62 

52 

34 

43

27 

22 

22 

19 

25 

39

40 

69 

69 

98 

249 

102 

110 

137

54

Potassium 

(K)

4.6 

4.7 

3.3 

3.4 

2.6 

2.7

2.4 

2.2 

1.9 

1.7 

1.7 

2.4

2.7 

4.6 

3.9 

5.7 

13 

5.3 

4.4 

4.8

3.0

Bicarbonate 

(HCOJ

206 

199 

161 

180 

163 

179

143 

138 

130 

123 

120 

149

147 

195 

174 

191 

210 

188 

192 

201

157

Carbonate 

(CO,)

Sulfate 

(S04)

342 

310 

171 

157 

100 

138

82 

62 

64 

64 

79 

142

136 

316 

240 

444 

1,810 

452 

372 

450

175

Chloride 

(Cl)

110 

101 

44 

40 

20 

22

16 

13 

14 

10 

16 

24

26 

37 

44 

59 

92 

53 

76 

102

38

Fluoride 

(F)

Nitrate 

(NO,)

7.4 

7.3 

5.9 

5.6 

3.7 

3.4

2.6 

1.3 

1.1 

1.8 

2.0 

2.3

2.5 

2.3 

3.9 

3.3 

.8 

3.5 

4.9 

6.4

3.5

B

ro

(B

0.1

.1

.1

.0

.1

.1

-
COLORADO RIVER MAIN STEM

COLORADO RIVER MAIN STJEN Continued

COLORADO RIVER AT HITE, UTAH Continued

Temperature (°F) of water, water year October 1956 to September 1957

105

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

Average

Oct.

66

67

67

66

66

66

68

65

65

64

63

62

60

59

58

57

58

57

59

62

..

--

62

53

53

52

51

51

50

50

49

60

Nov.

47

46

45

43

42

42

43

44

44

45

48

44

45

44

43

41

39

40

38

38

37

36

34

37

36

35

36

38

36

36

41

Dec.

36

36

36

36

36

39

38

38

36

34

36

35

34

34

34

35

34

36

36

34

_

36

35

34

Jan.

_

40

38

36

37

39

37

42

40

..

35

34

35

34

36

36

37

35

35

34

Feb.

34

34

34

34

34

33

36

35

38

36

38

41

40

41

41

41

40

48

45

46

46

46

45

45

45

44

45

47

-.

40

Mar.

47

47

47

46

47

46

45

45

47

48

49

48

47

46

45

45

46

46

47

48

45

_

50

46

44

46

47

49

50

51

53

47

/ .pr.

52

52

50

50

50

54

52

52

52

53

54

57

57

59

59

59

59

59

56

56

56

54

52

52

54

53

54

54

54

53

54

May

56

58

60

61

64

63

61

60

61

60

58

56

57

57

56

56

57

58

58

56

56

56

56

56

56

58

60

61

63

65

64

59

June

64

65

64

65

68

66

66

65

65

63

62

62

63

64

64

62

60

60

61

62

65

65

65

65

64

66

66

68

67

69

64

July

68

67

68

68

70

70

70

70

70

70

71

72

72

73

71

73

73

72

72

72

72

72

72

71

73

72

72

73

73

76

75

71

Aug.

76

75

77

78

76

77

76

75

73

74

74

75

75

76

76

76

78

78

77

77

76

76

75

76

75

75

74

74

73

71

65

75

Sept.

67

66

67

68

68

68

69

73

73

71

69

69

68

69

70

67

67

66

65

64

64

65

62

63

63

64

65

65

65

65

67
106 COLORADO RIVER BASIN

COLORADO RIVER MAIN STEM Continued

COLORADO RIVER AT HITE, UTAH Coutinued

Suspended sediment, water year October 1956 to September 1957

Day

1......

2. .....

5. .....

7. .....

8. .....

10. .....

12. ..... 

13. .....

15. .....

16. .....

18. ..... 

19. .....

21......

23. .....

24. ..... 

25. .....

26......

28. .....

30. .....

31. .....

Total.

L..... 

2...... 

3...... 

4...... 

5......

8...... 

9. ..... 

10......

14. ..... 

15. .....

18. .....

20. .....

21...... 

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

October

Mean 

discharge 

(cfs)

2,670 

2,680 

2,740 

2,810 

2,870

2,900 

2,900 

2,920 

2,960 

2,920

2,990 

2,990 

2,920 

2,940 

2,960

2,960 

2,970 

3,030 

3,080 

3,120

3,210 

3,200 

3,110 

3,060 

3,070

3,330 

3,620 

3,590 

3,790 

4,560 

4,440

97,310

Suspended sediment

Mean 

concentration 

(ppm)

75 

83 

137 

160 

210

156 

182 

182 

167 

167

170 

155 

178 

182 

193

185 

188 

182 

187 

205

230 

220 

210 

222 

208

550 

825 

450 

850 

10,200 

4,000

-

Tons 

per 

day

541 

601 

1,010 

1,210 

1,630

1,220 

1,430 

1,430 

1,330 

1,320

1,370 

1,250 

1,400 

1,440 

1,540

1,480 

1,510 

1,490 

1,560 

1,730

a 2, 000 

a 1,900 

1,760 

1,830 

1,720

4,950 

8,060 

4,360 

8,700 

126, 000 

48,000

235,772

January

3,200 

3,240 

3,710 

3,610 

3,750

3,920 

4,000 

4,220 

4,410 

4,350

4,300 

4,280 

4,300 

4,330 

4,270

4,390 

4,770 

4,770 

4,860 

4,190

3,840 

3,850 

3,540 

3,720 

3,840

4,020 

4,200 

3,980 

4,020 

4,220 

3,980

126, 080

340 

370 

320 

300 

350

410 

440 

480 

390 

500

450 

415 

590 

505 

460

915 

410 

380 

360 

470

480 

1,170 

550 

365 

355

400 

400 

370 

365 

330 

285

-

a 2, 900 

a 3. 200 

3,200 

2,920 

a 3, 500

a 4, 300 

a 4, 800 

5,470 

4,640 

5,870

5,220 

4,800 

6,850 

5,900 

5,300

10,800 

a 5, 300 

4,890 

a 4, 700 

a 5, 300

a 5, 000 

12,200 

5,260 

3,670 

3,680

4,340 

4,540 

3,980 

3,960 

3,760 

3,060

153,310

November

Mean 

discharge 

(cfs)

4,030 

4,110 

4,560 

4,650 

4,610

4,970 

5,450 

5,360 

5,240 

5,110

4,950 

4,770 

4,630 

4,550 

4,660

4,680 

4,790 

4,950 

5,060 

4,790

4,530 

4,510 

4,610 

4,040 

3,780

3,610 

3,650 

3,880 

4,040 

4,020

136, 590

Suspended sediment

Mean 

concentration 

(ppm)

1,850 

1,100 

810 

780 

1,430

1,680 

1,160 

915 

760 

690

598 

570 

740 

760 

650

535 

498 

445 

475 

388

360 

310 

290 

280 

605

480 

350 

350 

350 

297

-

Tons 

per 

day

20, 100 

12,200 

9,'970 

9,790 

17,800

22, 500 

17,100 

13,200 

10,800 

9,520

7,990 

7,340 

9,250 

9,340 

8,180

6,760 

6,440 

5,950 

6,490 

5,020

4,400 

3,770 

3,610 

3,050 

6,170

4,680 

3,450 

3,670 

3,820 

3,220

255,580

February

3,860 

3,750 

4,020 

4,080 

3,910

3,730 

3,750 

3,850 

3,610 

3,430

3,710 

4,310 

5,150 

5,510 

5,550

5,320 

5,170 

5,130 

5,040 

5,060

5,260 

5,400 

5,530 

5,710 

5,910

5,890 

5,790 

6,010

133,440

270 

322 

343 

378 

340

260 

205 

183 

190 

510

405 

425 

570 

1,010 

1,760

1,550 

1,110 

1,030 

1,060 

970

1,800 

1,100 

1,080 

1,110 

1,230

1,690 

1,780 

1,650

--

2,810 

3,260 

3,720 

4,160 

3,590

2,620 

2,080 

1,900 

1,850 

4,720

4,060 

4,950 

7,930 

15,000 

26, 400

22, 300 

15,500 

14, 300 

14, 400 

13, 300

25,600 

16,000 

16, 100 

17,100 

19,600

26, 900 

27,800 

26, 800

344,750

December

Mean 

discharge 

(cfs)

3,910 

3,920 

3,790 

3,760 

3,800

3,900 

4,020 

4,150 

4,250 

4,250

4,020 

3,300 

2,870 

3,060 

3,430

3,510 

4,030 

4,040 

3,920 

3,850

3,850 

3,780 

3,540 

3,'450 

3,380

3,200 

3,300 

3,200 

3,040 

3,140 

3,150

112,810

Suspended sediment

Mean 

concentration 

(ppm)

300 

300 

260 

240 

250

287 

340 

340 

315 

240

204

185 

182 

280 

550

518 

404 

410 

350 

320

322 

320 

260 

225 

270

300 

320 

310 

320 

310 

300

-

Tons 

per 

day

3,170 

3,180 

2,660 

2,440 

2,560

3,020 

a3,700 

3,810 

3,610 

2,750

2,210 

1,650 

1,410 

2,310 

5,090

4,910 

4,400 

a 4, 500 

3,700 

3,330

3,350 

a 3, 300 

a 2, 500 

2,100 

2,460

2,590 

a 2, 900 

a 2, 700 

a 2, 600 

a 2, 600 

a 2, 600

94, 110

March

6,170 

6,380 

6,490 

6,700 

7,120

7,720 

7,860 

7,770 

7,360 

7,050

7,230 

7,750 

8,210 

8,420 

7,840

7,500 

7,340 

7,030 

6,490 

6,220

6,400 

6,170 

6,050 

5,910 

5,890

6,070 

6,240 

5,870 

5,650 

5,670 

5.430

210,000

1,450 

1,310 

1,480 

1,230 

1,180

1,300 

1,380 

1,280 

1,200 

1,230

1,300 

1,500 

1,680 

1,850 

1,760

1,930 

1,960 

1,700 

1,400 

1,430

1,480 

1,300 

1,090 

1,220 

1,420

1,030 

865 

910 

885 

785 

740

-

24,200 

22,600 

25,900 

22,300 

22,700

27,100 

29, 300 

26,900 

23,800 

23,400

25,400 

31,400 

37,200 

42, 100 

37,300

39,100 

38,800 

32,300 

24,500 

24, 000

25,600 

a 22, 000 

17,800 

19, 500 

22,600

16,900 

14,600 

14,400 

13,500 

12,000 

10. 800

770, 000

a Computed from estimated concentration graph.
COLORADO RIVER MAIN STEM

COLORADO RIVER MAIN STEM--Coiitinued

COLORADO RIVER AT HITE, UTAH Continued

Suspended sediment, water year October 1956 to September 1957--Continued

Day

1......

3. .....

5. .....

7. .....

9. .....

10. .....

11......

12. .....

13. .....

16. .....

17. .....

21......

22......

25. .....

28......

31......

Total.

1. ..... 

2...... 

3...... 

4......

a.....

a.....

9. ..... 

10. .....

14. ..... 

15. .....

20. .....

99

23. ..... 

24. ..... 

25......

26. ..... 

27...... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

April

Mean 

discharge 

(cfs)

5,550 

6,050 

6,300 

6,340 

6,740

7,980 

7,470 

7,290 

7,250 

7,070

7,250 

6,900 

6,570 

6,720 

8,070

9,490 

11,200 

12,500 

15,200 

17,100

17, 100 

16, 600 

16, 500 

17,800 

18,400

16,700 

15, 100 

14, 600 

14,600 

14,600

331,040

Suspended sediment

Mean 

concentration 

(ppm)

835 

1,480 

2,080 

885 

940

1,010 

1,260 

1,230 

2,000 

2,400

1,350 

1,030 

935 

930 

1,000

2,000 

4,900 

4,900 

4,630 

5,230

4,550 

3,850 

3,570 

4,010 

3,700

3,080 

2,700 

2,380 

2,500 

2,200

-

Tons 

per 

day

12, 500 

24, 200 

35, 400 

15, 100 

17, 100

21,800 

25,400 

24, 200 

39, 200 

45, 800

26, 400 

19, 200 

16, 600 

16, 900 

21,800

51, 200 

148, 000 

165,000 

190, 000 

241,000

210, 000 

173, 000 

159, 000 

193, 000 

184, 000

139, 000 

110,000 

93,800 

98, 600 

86, 700

2, 603, 900

July

83, 500 

84, 900 

85, 000 

82,900 

81, 300

80, 700 

77,400 

71,600 

66, 300 

64,600

61, 200 

57,000 

54, 300 

50, 000 

47, 300

45, 500 

43, 200 

41, 300 

42, 500 

43, 200

44,900 

41,200 

37,400 

35, 100 

34, 300

33, 300 

31, 200 

31, 300 

35,600 

34, 000 

31,600

1,653,600

1,760 

1,880 

1,860 

1,950 

1,800

1,600 

1,400 

1,770 

1,900 

3,000

1,880 

1,890 

2,190 

2,100 

1,750

1,500 

1,970 

2,170 

6,120 

6,200

5,030 

4,800 

3,250 

2,500 

2,180

1,600 

2,850 

2,200 

2,800 

2,500 

1,780

-

397, 000 

431,000 

427, 000 

436, 000 

395, 000

349, 000 

293, 000 

342, 000 

340, 000 

523,000

311,000 

291, 000 

321,000 

284, 000 

223, 000

184, 000 

230, 000 

242, 000 

702, 000 

723, 000

610, 000 

534, 000 

328, 000 

237, 000 

202,000

144, 000 

240, 000 

186, 000 

269, 000 

230, 000 

152, 000

L 0,576, 000

May

discharge 

(cfs)

14, 400 

13,700 

14, 800 

17,100 

21,200

25,800 

31,300 

36,600 

40,800 

43, 300

49, 400 

50, 200 

52, 300 

51,300 

46,900

43, 700 

40,900 

40,700 

38, 600 

35,400

35, 700 

38, 400 

37, 000 

36, 400 

37,100

36,700 

34, 700 

32,500 

33,300 

36,800 

41,700

1, 108, 700

Suspended sediment

Mean 

concentration 

(ppm)

3,280 

2,650 

2,080 

2,400 

3,270

4,750 

5,860 

7,700 

6,000 

5,860

5,550 

5,740 

5,300 

4,900 

5,300

5,300 

4,660 

4,480 

5,050 

4,050

3,790 

3,970 

4,500 

3,500 

4,800

3,880 

3,750 

3,480 

2,860 

2,650 

3,030

-

Tons 

per 

day

128, 000 

98, 000 

83, 100 

111,000 

187, 000

331,000 

495, 000 

761,000 

661, 000 

685, 000

740, 000 

.778, 000 

748, 000 

679, 000 

671,000

625, 000 

515,000 

492, 000 

526, 000 

387,000

365, 000 

412, 000 

450, 000 

344, 000 

481, 000

384, 000 

351, 000 

305, 000 

257, 000 

263, 000 

341, 000

13, 654, 100

August

30, 600 

28, 200 

25, 600 

23, 600 

22,000

22,600 

29, 100 

24,200 

30,400 

25, 500

22, 300 

20, 100 

18, 100 

16, 900 

16, 300

15, 700 

14, 600 

14, 000 

13,700 

12,900

13,800 

19,900 

17,900 

15,300 

12,900

11,900 

11,600 

13, 100 

13, 300 

15, 100 

25, 600

596, 800

1,370 

1,220 

1,120 

910 

970

6,800 

5,800 

10,000 

8,500 

11, 300

8,400 

5,500 

5,500 

4,100 

2,800

2,650 

1,720 

1,290 

1,230 

1,050

1,700 

21,700 

19,800 

9,000 

16, 700

14, 200 

6,200 

9,500 

7,000 

13, 000 

36,500

-

113,000 

92, 900 

77, 400 

58, 000 

57, 600

s 445, 000 

456, 000 

653,000 

698, 000 

778,000

506, 000 

298, 000 

269, 000 

187,000 

123, 000

112,000 

67, 800 

48, 800 

45, 500 

36, 600

63,300 

si, 250, 000 

957, 000 

372,000 

582, 000

456, 000 

194, 000 

336, 000 

251, 000 

530, 000 

s2, 500, 000

12,613,900

June

Mean 

discharge 

(cfs)

46, 900 

51,200 

54,300 

59, 100 

66,900

75,400 

82, 300 

89, 200 

93,500 

96, 500

100, 000 

103, 000 

98,200 

90,000 

90,100

95,300 

96, 100 

91, 300 

83, 200 

78, 500

77, 200 

79, 200 

79, 700 

74, 800 

69,700

71, 200 

73,300 

77,200 

78,000 

81,600

2,402,900

Suspended sediment

Mean 

concentration 

(ppm)

3,150 

3,300 

3,190 

3,270 

3,800

4,450 

4,200 

3,600 

3,220 

2,990

2,790 

3,200 

2,900 

3,400 

2,270

2,080 

2,230 

2,360 

2,600 

2,630

2,590 

2,230 

2,130 

2,308 

2,370

2,180 

2,080 

2,050 

1,980 

1,730

-

Tons 

per 

day

399, 000 

456, 000 

468, 000 

522, 000 

686, 000

906, 000 

933, 000 

867, 000 

813, 000 

779, 000

753, 000 

890, 000 

769, 000 

826, 000 

552, 000

535, 000 

579, 000 

582, 000 

584, 000 

557, 000

540, 000 

477, 000 

458, 000 

465, 000 

446, 000

419, 000 

412, 000 

427, 000 

417, 000 

381, 000

17,898,000

September

30, 400 

20, 900 

19, 700 

16, 600 

14, 600

12,900 

12,000 

11,200 

10,600 

10, 100

9,590 

9,260 

8,590 

7,960 

7,360

7,030 

6,740 

6,530 

6,430 

6,280

6,070 

5,850 

5,890 

6,070 

6,300

6,360 

6,280 

6,220 

6,070 

5,930

295,810

22, 300 

26, 200 

16, 800 

11,300 

7,250

6,000 

4,650 

4,200 

3,200 

2,140

1,860 

1,650 

1,850 

1,340 

1,180

1,070 

,050 

,070 

,040 

,030

,050 

,020 

,080 

990 

930

975 

1,080 

970 

945 

890

--

1,830,000 

1,480,000 

894, 000 

506, 000 

286, 000

209, 000 

151, 000 

127, 000 

91, 600 

58,400

48, 200 

41, 300 

42,900 

28, 800 

23,400

20, 300 

19, 100 

18, 900 

18, 100 

17, 500

17, 200 

16, 100 

17,200 

16, 200 

15,800

16,700 

18, 300 

16, 300 

15, 500 

14, 200

6,075,000

Total discharge for year (cfs days) 

Total load for year (tons).

s Computed by subdividing day.

a Computed from estimated concentration graph.

7,205,080

65, 274, 422
COLORADO RIVER MAIN STEM--Continued 

COLORADO RIVER AT KITE, UTAH "Continued

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, in native water; P, pipet; S. sieve; V, visual accumulation tube; W, in 

Date 

of 

collection

Oct. 3, 1956.....

Feb. 8, 1957. ....

Aue. 24.........

Time

4:40 p.m. 

5:10 p.m. 

8:30 a.m. 

7:25 a.m. 

9:30 a.m. 

12:10 p.m. 

11:35 a.m.

5:10 p.m. 

6:10 p.m. 

8:30 a.m. 

7:40 p.m. 

6:35 p.m. 

7:20 p.m. 

7:50 a.m.

10:00 a.m. 

3:30 p.m. 

9:50 a.m. 

4:15 p.m. 

12:45 p.m. 

10:25 a.m. 

3:20 p.m.

8:30 a.m. 

11:40 a.m. 

7:20 a.m. 

6:10 p.m. 

4:30 p.m. 

4:30 p.m. 

7:10 D.m.

Discharge 

(cfs)

2,750 

3,380 

4,730 

4,580 

4,090 

2,850 

3,860

7,750 

8,070 

50,500 

80, 000 

85, 200 

46, 300 

34, 500

23,600 

24, 200 

30, 900 

29, 800 

22, 900 

31, 800 

31,300

26, 200 

20, 100 

19, 400 

21,600 

18,700 

18,700 

14.100

Water 

temperature 

(°F)

71 

55 

50 

49 

46 

35 

35

49

56 

65 

70 

73 

73

78 

75 

77 

77 

76 

76 

76

74 

76 

76 

75 

77 

77 

77

Suspended sedim

Concentration 

of sample 

(PPm)

124 

918 

8,170 

4,650 

1,120 

167 

179

1,260 

1,020 

5,530 

2,080 

1,810 

1,590 

2,200

916 

18,100 

5,340 

4,350 

11,400 

7,270 

8,110

10, 500 

5,430 

7,280 

43, 100 

20,500 

20, 500 

7 430

Concentration 

of suspension 

analyzed 

(ppm)

2,580 

3,310 

4,660 

3,350 

4,020 

4,440 

3,570

5,360 

3,820 

3,560 

3,300 

2,680 

3,040 

3,940

4,230 

4,870 

4,070 

3,720 

4,110 

3,770 

3,880

3,610 

4,610 

5,660 

3,870 

3,360 

3,330 

4. 110

Percent finer 

0.002 0.004

28 

64 

61 

56 

56 

55 

40

44 

46 

26 

22 

19 

25 

33

28 

40 

32 

32 

60 

53 

48

56 

60 

48 

46 

54 

3 

59

0.008 0.016

42 

87 

91 

83 

71 

78 

53

66 

66 

45 

35 

34 

39 

49

44 

68 

53 

57 

88 

70 

73

84 

86 

77 

70 

84 

82 

83

0.

9

9

7
COLORADO RIVER MAIN STEM 109

sssssss

uuuuuu y

III?***

Ot AH AH a* QH Q< Qj 

CQ 03 03 09 03 03 CQ

:::§§§§

§§§!

m rg <*( <*> a co eo 

en c* co co co co eo

S « 5* S S

o o o o o o o 

S & « o> 8 2 8

§§s§§:

O CM CO CO -*1 ~4 *H

»H a* -^ M o co c

6 6 8 6 6 8 6

a>Q.{4{4Q,c4D<

to t- o» oo *H i

CD S«n-<«*-' e *H 'A 
SAN JUAN RIVEK BASIN 

SAN JUAN RIVER NEAR ARCHULETA , N . HEX .

LOCATION.--At gaging station 4i miles downstream from Los Pinos River and

DRAINAGE AREA. 3,240 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: December 1954 to September 1957.

Water temperatures: December 1954 to September 1957.

Sediment records: December 1954 to September 1957. 

EXTREMES, 1956-57.--Dissolved solids: Maximum, 415 ppm Nov. 21-23; minimum, 85 ppm June 14-July 11

Hardness: Maximum, 213 ppm Nov. 21-23; minimum, 40 ppm July 1-11.

miles northeast of Archule

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Oct. 1-23, 1956 ....

Nov. 21-23.........

Jan. 1-31, 1957 ....

Mean 

discharge 

(cfs)

170 

265 

246 

191 

143 

163

154 

127 

216 

174 

295 

649 

725 

840 

769

Silica 

(S10,)

9.1 

14

16

Iron 

(Fe)

0.01 

.12

.06

Calcium 

(Ca)

46 

50 

47 

49 

64 

58

53 

61 

54 

56 

48 

39 

45 

50 

55

Magnesium 

(Mg)

10 

11 

10 

11 

13 

10

10 

12 

8.8 

11 

9.0 

9.3 

10 

8.8 

13

Sodium 

(Na)

39 

42 

37 

41 

53 

44

45 

47 

42 

43 

39 

31 

58 

38 

39

Potassium 

(K)

3 9 

5.0

4.1

Bicarbonate 

(HCO.)

no

168 

160

no

202 

181

no

185 

156 

165 

147 

142 

177 

140 

149

Carbonate 

(CO,)

0 

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0 

0 

0 

0

Sulfate 

(S0«)

83 

101

120

Chloride 

(Cl)

9.5 

14

12

Fluoride 

(F)

0.4 

.5

.5

Nitrate 

(NO,)

0.5 

.5

.5

Boron 

(B)

0.10 

.12

07
Mar. 1-9, 1957.... .

Mar. 13-15 ........

Aug. 31-Sept. 1 ....

Sept. 16-30 ........

618

691

2,160

3,220

8,751

2,674

1,914

3,525

683

--_

___

---

"

..__

..

___

_.--

56

51

54

29

24

17

23

35

29

14

15

5.2

3.8

2.4

3.8

2.4

5.2

3.3

5.2

5.7

4.8

41

9fl

90

8.9

4.1

7.2

11

14

-__

___

--

--

163

143

162

90

104

106

108

65

112

86

112

225

128

100

0 000000

36

11

100

10

26

140

21

260000

0 00

--

__

..

_.

._

__

._

..

..

__

---

--

__

.._

2.0__

._

..__"-

"

..

_.

0.4_

._

.3_

__

.._

.___

_. _

---

"

._

..

..

_.

.5_

..

.._

_.

..

.__

..-

--

.0

a Calculated from determined constituents, 

b Includes carbonate as bicarbonate.
COLORADO RIVER BASIN

SAN JUAN RIVER BASIN--Continued

SAN JUAN RIVER NEAR ARCHULETA, N. MEX.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement, generally between 8 a.m. and 6 p.nW

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

Average

Oct.

54

58

b61

57

58

5ri

58

59

56

59

58

54

50

52

48

46

51

51

55

53

51

46

46

46

46

46

49

48

44

45

47

52

Nov.

43

35

34

37

b39

41

37

38

37

38

40

39

38

39

33

32

32

32

34

32

32

32

32

32

32

32

32

32

32

32

35

Dec.

31

31

31

31

31

32

32

33

31

31

32

32

32

32

32

32

32

39

32

32

32

32

32

32

32

32

32

32

32

32

Jan.

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

33

32

33

32

32

32

32

32

Feb.

32

32

32

32

3?.

32

33

32

33

33

34

35

35

37

36

39

37

37

38

40

39

38

39

38

41

38

41

42

36

Mar.

40

38

39

40

40

41

45

39

43

45

42

38

42

42

44

44

40

45

47

48

44

43

40

35

37

48

43

42

44

45

46

42

Apr.

a 46

a 46

40

44

39

44

44

47

42

41

45

49

a 45

47

45

46

46

47

44

45

48

48

41

42

47

47

a 46

45

46

54

45

May

58

54

b57

a 51

53

49

51

49

50

49

47

47

b52

50

51

b51

49

52

54

a 48

47

47

50

a 50

a 50

55

a 54

56

59

a 54

a 52

51

June

55

52

a 54

a 53

55

55

54

53

53

50

50

54

57

56

53

49

a 49

52

56

58

56

54

56

56

57

56

57

58

58

58

54

July

59

55

a 56

57

a 58

59

60

a 61

61

a 60

61

62

64

66

a 65

65

65

64

a 65

a 64

65

65

65

61

59

59

60

59

61

61

61

61

Aug.

62

66

a 64

63

63

a 61

65

65

65

b69

a 65

65

68

69

a 67

67

65

65

66

68

68

67

69

70

b67

66

66

a 65

63

a 59

66

Sept.

59

59

61

a 61

63

62

64

64

63

60

61

59

61

59

58

62

62

58

61

55

55

56

55

57

57

59

59

59

55

59

--

59

a Measurement taken prior to 8 a.m. 

b Measurement taken after 6 p.m.
SAN JUAN RIVER BASIN 113

SAN JUAN RIVER BASIN Continued

SAN JUAN RIVER NEAR ARCHULETA, N. HEX.--Continued 

Suspended sediment, water year October 1956 to September 1957

Day

1......

2. .....

3. .....

4. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

11......

12. .....

14. .....

15. .....

17. .....

18. .....

19. ..... 

20. .....

21......

22......

24. ..... 

25......

28. .....

29. .....

30. ..... 

31. .....

Total.

L..... 

2...... 

3...... 

4...... 

S......

8......

8...... 

9...... 

10. .....

11......

13. ..... 

14. ..... 

15. .....

16. .....

19. ..... 

20. .....

21. ..... 

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28...... 

29. ..... 

30. ..... 

31. ..... 

Total.

October

Mean 

discharge 

(els)

177 

167 

167 

170 

170

170 

167 

167 

158 

158

158 

167 

170 

167 

180

177 

186 

180 

180 

167

167 

177 

170 

228 

282

292 

231 

224 

246 

328 

292

6,040

Suspended sediment

Mean 

concentration 

(ppm)

67 

47 

43 

94 

60

45 

49 

45 

42 

40

42 

47 

41 

42

47

49 

54 

61 

51 

38

41 

40 

48 

110 

180

1,680 

790 

250 

101 

149 

100

-

Tons 

per 

day

32 

21 

19 

43 

28

21 

22 

20 

18 

17

18 

21 

19 

19 

23

23 

27 

30 

25

17

18 

19 

22 

68 

137

1,320 

493 

151 

67 

132 

79

2,969

January

160 

180 

200 

196 

190

190 

190 

195 

295 

330

295 

270 

250 

250 

260

250 

250 

240 

220 

210

200 

190 

190 

200 

228

196 

177 

196 

180 

170 

150

6,698

26 

32 

30 

34 

38

27 

26 

36 

100 

470

550 

350 

200 

350 

670

640 

350 

145 

100 

61

52 

53 

38 

28 

60

35 

66 

45 

40 

35 

21

11 

16 

16 

18 

19

14 

13 

19 

80 

419

438 

255 

135 

236

470

432 

236 

94 

59 

35

28 

27 

19 

15 

37

19 

32 

24 

19 

16 

9

3,260

November

Mean

discharge

(cfs)

274 

318 

262 

214 

206

203 

200 

203 

214 

220

210 

224 

224 

220 

195

158 

146 

149 

160 

150

140 

140 

150 

160 

160

170 

170 

160 

160 

160

5,720

Suspended sediment

Mean 

concentration 

(ppm)

388 

147 

58 

27 

34

22 

32 

30 

30 

26

30 

30 

29 

28 

35

66 

79 

64 

65 

132

83 

108 

113

79 

86

88 

83 

82 

62 

60

~

Tons 

per 

day

287 

126 

41 

16 

19

12 

17 

16 

17 

15

17 

18 

18 

17 

18

28 

31 

26 

28 

53

31 

41 

46 

34 

37

40 

38 

35 

27 

26

1,175

February

150 

150 

160 

170 

180

200 

210 

214 

238 

323

405 

649 

732 

676 

748

631

840 

840 

683 

785

785 

697 

800 

944 

944

755 

697 

601

15,207

23 

26 

26 

36 

31

62 

74 

74 

96 

500

1,300 

5,500 

11,800 

12,000 

14,300

7,200 

6,700 

4,700 

2,880 

2,700

3,000 

2,400 

3,550 

5,700 

5,150

4,000 

2,550 

2,200

-

9 

11 

11 

17 

15

33 

42 

43 

62 

436

1,420 

9,640 

23,300 

21,900 

28,900

12,300 

15, 200 

10,700 

5,310 

5,720

6,360 

4,520 

7,670 

14, 500 

13,100

8,150 

4,800 

3,570

197,739

December

Mean 

discharge 

(cfs)

170 

170 

170 

180 

180

180 

180 

170 

140 

120

140 

160 

160 

150 

150

120 

120 

120 

120 

120

120 

120 

110' 

110 

110

110 

120 

140 

150 

160 

160

4,430

Suspended sediment

Mean 

concentration 

(ppm)

98 

70 

39 

66 

64

49 

43 

80 

66 

50

56 

67 

56

74 

47

50 

33

58

32 

31 

29 

34 

41

32 

36 

31 

25 

37 

31

--

Tons 

per 

day

45 

32 

18 

32 

31

24 

21 

37 

25 

16

21 

29 

24 

30 

19

16 

11 

e!3 

e!6 

19

10 

10 

9 

10 

12

10 

12 

12 

10 

16 

13

603

March

669 

824 

864 

669 

553

499 

464 

436 

583 

725

1,250 

848 

864 

669 

541

523 

625 

637 

637 

718

936 

1,060 

864 

601 

559

565 

649 

840 

1,000 

1,090 

1.240

23. 002

1,720 

3,400 

2,840 

2,400 

1,600

840 

430 

490 

1,680 

3,200

9,660 

5,200 

3,730 

2,210 

900

600 

1,030 

1,500 

1,400 

1,270

3,100 

4,870 

2,800 

910 

400

460 

1,130 

2,240 

3,100 

2,970 

4.100

3,110 

7,560 

6,630 

4,340 

2,390

1,130 

539 

577 

2,640 

6,260

s 31, 500 

11,900 

8,700 

3,990 

1,310

847 

1,740 

2,580 

2,410 

2,460

7,830 

13,900 

6,530 

1,480 

604

702 

1,980 

5,080 

8,370 

8,740 

13.700

171,529

e Estimated.

s Computed by subdividing day.
114 COLORADO RIVER BASIN 

SAM JUAN RIVER BASIN Continued

SAN JUAN RIVER NEAR ARCHULETA, N. HEX.~Continued 

Suspended sediment, water year October 1956 to September 1957 Continued

Day

1......

2......

4. ..... 

5. .....

6. . . .

7. .....

8. .....

10. .....

11......

12. ..... 

13......

16. .....

18......

19. ..... 

20. .....

21......

22......

23. .....

24. .....

25. .....

28......

29......

31......

Total.

1...... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9. ..... 

10. .....

13...... 

14. ..... 

15. .....

16. .....

1 ft

19. .....

22. ..... 

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

April

Mean 

discharge 

(cfs)

1,350 

1,210 

928 

840 

697

643 

792 

792 

718 

1,230

1,770 

2,550 

2,930 

3,390 

3,330

3,660 

3,660 

3,920 

2,940 

2,360

2,340 

3,040 

2,790 

2,310 

2,180

1,890 

1,650 

1,550 

1,470 

1,620

60, 550

Suspended sediment

Mean 

concentration 

(ppm)

6,100 

3,500 

1,280 

780 

770

720 

1,070 

1,300 

860 

3,800

6,300 

8,750 

8,000 

6,300 

3,600

3,500 

2,700 

2,750 

1,650 

1,250

1,100 

1,700 

1,080 

1,080 

1,020

630 

380 

320 

270 

390

-

Tons 

per 

day

22, 200 

11.4QO 

3,210 

1,770 

1,450

1,250 

2,290 

2,780 

1,670 

12,600

30, 100 

60, 200 

63, 300 

57,700 

32, 400

34, 600 

26, 700 

29, 100 

13, 100 

7,960

6,950 

14,000 

8,140 

6,610 

6,000

3,210 

1,690 

1,340 

1,070 

1,710

466, 500

July

7,900 

7,700 

7,050 

6,600 

6,200

5,640 

4,980 

4,640 

5,080 

4,500

3,770 

3,320 

3,080 

2,860 

2,660

2,310 

2,700 

3,040 

2,860 

3,770

3,040 

2,790 

2,510 

2,760 

3,150

9,190 

17, 100 

12,100 

8,480 

6,660 

6,200

164, 640

930 

840 

760 

730 

620

580 

520 

480 

1,500 

580

320 

390 

360 

430 

300

200 

994 

6,520 

2,200 

5,150

730 

450 

770 

2,240 

1,250

18,100 

11,300 

3,400 

2,800 

1,900 

4,650

-

Total discharge for year (cfsTotal load for year (tons) ....

19, 800 

17, 500 

14, 500 

13, 000 

10, 400

8,830 

6,990 

6,010 

s 21, 900 

7,050

3,260 

3,500 

2,990 

3,320 

2,150

1,250 

sll,100 

s 55, 300 

17,000 

s 58, 000

5,990 

3,390 

5,220 

16, 700 

10, 600

s 492, 000 

522, 000 

111,000 

64, 100 

34, 200 

77,800

1,626,850

May

Mean 

discharge 

(cfs)

1,720 

2,150 

2,750 

3,280 

3,920

4,240 

4,710 

5,000 

5,300 

4,640

5,500 

4,680 

3,800 

3,340 

3,090

2,970 

2,690 

2,480 

2,480 

3,390

3,890 

3,270 

3,320 

3,240 

2,690

2,550 

2,750 

3,300 

4,300 

5,100 

5.440

111,980

Suspended sediment

Mean 

concentration 

(ppm)

480 

710 

1,400 

1,650 

2,150

1,860 

1,850 

1,710 

3,100 

1,730

2,640 

2,120 

1,400 

1,050 

810

760 

520 

460 

340 

1,100

2,750 

930 

1,650 

970 

400

320 

380 

660 

1,250 

1,240 

1.150

--

Tons 

per 

day

2,230 

4,120 

10, 400 

14, 600 

22,800

21, 300 

23, 500 

23, 100 

44,400 

21,700

39,200 

26,800 

14,400 

9,470 

6,760

6,090 

3,780 

3,080 

2,280 

10, 100

28, 900 

8,210 

14,800 

8,490 

2,910

2,200 

2,820 

5,880 

14, 500 

17, 100 

16.900

432,820

August

4,730 

3,360 

4,080 

3,940 

5,060

5,400 

5,960 

3,520 

2,790 

2,480

2,270 

2,310 

2,030 

1,700 

1,510

2,550 

2,330 

2,410 

2,250 

1,870

1,730 

1,590 

1,470 

,530 

,660

,410 

,570 

,410 

1,290 

2,820 

3,720

82,750

1,300 

5,200 

5,750 

8,000 

9,960

13,200 

11,000 

1,300 

600 

400

250 

5,640 

6,000 

1,450 

600

10,900 

4,000 

6,800 

3,300 

1,500

770 

480 

270 

5,660 

12,000

1,250 

800 

200 

180 

4,840 

7.400

-

16, 600 

47, 200 

63,300 

85,100 

8 144, 000

s 200, 000 

177,000 

12,400 

4,520 

2,680

1,530 

s 38, 400 

32,900 

6.660 

2,450

s 83, 200 

25,200 

44, 200 

20,000 

7,570

3,600 

2,060 

1,070 

s 30, 800 

53, 800

4,760 

3,390 

838 

627 

s 51, 400 

74. 300

1,241,555

June

Mean 

discharge 

(cfs)

5,680 

6,400 

7,380 

8,800 

10,600

11,200 

11,000 

10,200 

9,550 

9,800

8,800 

7,500 

6,850 

7,420 

7,250

6,000 

4,960 

5,080 

5,920 

7,050

8,600 

8,200 

7,620 

8,100 

8,650

8,800 

8,480 

8,500 

8,850 

8,680

241,920

Suspended sediment

Mean 

concentration 

(ppm)

970 

1,500 

2,350 

3,400 

3,700

3,000 

2,800 

2,200 

1,800 

2,150

1,600 

1,270 

1,160 

1,200 

1,080

790 

620 

700 

1,300 

1,800

2,020 

1,560 

1,260 

1,270 

1,310

1,260 

1,000 

1,200 

1,130 

1,070

-

Tons 

per 

day

14,900 

25,900 

46,800 

80,800 

106, 000

90, 700 

83, 200 

60, 600 

46,400 

56,900

38,000 

25,700 

21, 500 

24; 000 

21, 100

12,800 

8,300 

9,600 

20, 800 

34, 300

46,900 

34, 500 

25, 900 

27, 800 

30,600

29, 900 

22, 900 

27, 500 

27,000 

25, 100

1,126,400

September

3,330 

2,620 

2,200 

1,900 

1,700

1,590 

1,450 

1,360 

1,250 

1,140

1,080 

1,000 

1,000 

960 

904

725 

697 

748 

725 

718

697 

676 

676 

625 

732

690 

662 

595 

643 

643

33,736

6,500 

1,400 

680 

400 

307

229 

132 

120 

118

72

84 

74 

68 

62 

53

48 

64 

36 

31 

30

31 

34 

42 

35

57

44 

42 

30 

35 

28

lays) .............................................................

58, 400 

9,900 

4,040 

2,050 

1,410

983 

517 

441 

398 

222

245 

200 

184 

161 

129

94 

120 

73 

61 

58

58 

62 

77 

59 

113

82 

75 

48 

61 

49

80, 370

756, 673 

5,351,770

s Computed by subdividing day.
SAN JUAN RIVER BASIN- -Continued

SAN JUAN RIVER NEAR ARCHULETA , N. HEX .--Continu

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, in native water; P, ptpet; S, sieve; V, visual accumulation tube; W, in 

Date 

of 

collection

Dec. 20, 1956... 

Jan. 15, 1957 ...

Feb. 27.........

Sept. 12 ........

Time

4:00 p.m. 

5:15 p.m. 

5:50 p.m. 

3:00 p.m. 

3:00 p.m.

9:15 a.m. 

8:40 a.m. 

1:40 p.m. 

1:40 p.m. 

3:45 p.m.

6:30 p.m. 

6:20 p.m. 

9:30 p.m. 

2:10 p.m. 

1:10 p.m.

6:30 p.m. 

12:55 p.m. 

8:12 a.m. 

10:20 a.m. 

10:00 a.m. 

10:30 a.m.

Discharge 

(cfs)

a 120 

a 260 

511 

690 

690

748 

928 

2,980 

2,980 

3,840

2,360 

4,960 

3,470 

10, 000 

6,740

7,800 

6,220 

2,690 

1,770 

3,280 

1.030

Water 

temperature 

(°F)

40 

31 

39 

41 

41

43 

40 

49 

49 

52

58 

49 

59 

55 

59

60 

63 

64 

69 

59 

62

Suspended sedi

Concentration 

of sample 

(ppm)

42 

862 

7,620 

6,810 

6,810

1,670 

3,040 

8,710 

8,710 

2,950

986 

1,700 

888 

1,880 

1,630

720 

3,760 

7,390 

705 

6,520 

59

Concentration 

of suspension 

analyzed 

(ppm)

2,060 

7,440 

12, 000 

13, 600

5,370 

3,540 

3,340 

3,600 

3,930

2,220

3,490 

1,900

3,340 

3,670

5,060

Percent finer 

0.002

25 

3

45 

3

0.004

69 

71 

32 

15

55 

50 

54 

17 

24

24

24 

13

39

57

45

0.008

43 

34

62 

60

0.016

89 

95 

58 

53

83 

71 

68 

68 

37

40

42 

24

58 

82

66

0

a Daily mean discharge.

Particle-size analyses of bed material, water year October 1956 to 

Date of collection

May 24, 1956 ..... 

June 13 ...........

Time

1:25 p.m. 

9:25 a.m.

Discharge 

(cfs)

3,720 

2,140

Water 

temperature 

(°F)

55 

65

Number of 

sampling

2 

2

Bed m

Percent finer than indica

0.0625

0 

0

0.125

0 

0

0.25

5 

3

0.5

49

47

1

95 

90
116 COLORADO RIVER BASIN

SAN JUAN RIVER BASIN--Continued 

SAN JUAN RIVER AT BLOOMFIELD, N . MEX .

LOCATION. At gaging station at bridge on State Highway 44, three-quarters of a mile south 

of Bloomfield, San Juan County, 3 miles upstream from Kutz Canyon, and 10 miles downstream from Canyon Largo.

DRAINAGE AREA. 5,410 square miles, approximately.

RECORDS AVAILABLE. --Water temperatures: November 1955 to September 1957. 

Sediment records: November 1955 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 77°FAug. 15; minimum, freezing point

on several days during November to January. 

Sediment 

Oct. 12.

concentrations: Maximum daily

uary. 

, 68, 000 ppm Aug. 31; minimum daily, 350 ppm

Sediment loads: Maximum daily, 1,110,000 tons Aug. 31; minimum daily, 103 tons Oct. 11. 

EXTREMES, 1955-57. --Water temperatures: Maximum, 84 °F Aug. 13, 1956; minimum, freezing

point on many days during winter months. 

Sediment concentrations: Maximum daily, 101,000 ppm Aug. 1, 1956; minimum daily, 58 ppm

July 15, 1956. 

Sediment loads: Maximum daily, 1,110,000 tons Aug. 31, 1957; minimum daily, 31 tons

July 17, 1956.

REMARKS. Records of specific conductance of daily samples available in district office 

at Albuquerque, N. Mex. Records of discharge for water year 1956 to September 1957 

given in WSP 1513. Flow affected by ice Nov. 21, Dec. 10-12, Dec. 22 to Jan. 1.

Temperature (°F) of water, water year October 1956 to September 1957 

^Once-daily measurement, generally between 4 p . m . and 9p.m./

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

Average

Oct.

67

64

66

69

74

._

68

65

63

68

62

55

61

61

61

62

62

56

58

58

56

a46

48

49

54

55

43

50

45

a 37

58

Nov.

39

a 35

41

44

43

48

47

49

49

49

52

50

50

40

38

36

b36

b37

--

32

32

a 32

40

40

36

40

35

40

--

41

Dec.

b40

38

36

--

40

40

a 32

34

32

35

34

35

38

34

b34

35

--

32

32

._

32

32

32

32

_

32

32

32

34

32

34

Jan.

_

32

34

35

58

46

34

40

38

32

37

a35

b37

44

41

38

37

a32

33

33

37

34

37

"

a 33

b37

38

38

37

35

37

Feb.

42

41

45

40

45

b46

42

45

47

45

42

45

43

a35

42

43

45

42

40

45

44

45

45

45

47

b48

45

48

--

44

Mar.

47

43

40

45

45

47

49

52

50

--

47

48

44

45

47

47

51

50

51

50

51

43

a 37

39

48

50

53

52

50

51

55

48

Apr.

49

47

a 42

47

51

51

47

50

53

55

55

54

53

b54

55

55

a 48

51

54

55

a 47

55

a 43

49

--

_

50

48

b51

59

--

51

May

60

67

65

60

55

a 52

55

55

55

54

53

51

53

55

53

57

60

"

..

--

--

_.

64

63

a 57

60

--

June

60

b61

64

61

60

59

59

61

60

52

55

59

60

63

a55

a 53

58

63

62

63

63

62

63

62

64

63

65

62

64

64

--

61

July

65

67

a 60

66

68

69

67

66

68

62

71

a 72

a 65

73

74

74

71

70

73

71

72

65

66

63

a 60

63

63

b65

68

a 64

70

67

Aug.

a 66

a 67

70

70

68

68

68

71

72

76

72

75

76

74

77

76

a70

74

72

72

76

75

a 66

a 66

72

71

75

a 65

67

70

a 62

71

Sept.

64

67

67

70

69

72

72

70

71

67

65

66

67

a 59

69

66

66

66

66

a55

55

a53

68

66

65

..

--

66

--

68

--

66

a Measurement before 12 m.

b Measurement between 12 m. and 4 p.m.
SAN JUAN RIVER BASIN

SAN JUAN RIVER BASIN--Continued

SAN JUAN RIVER AT BLOOMFIELD, N. HEX.--Continued

Suspended sediment, water year October 1956 to September 1957

Day

1......

2. .....

3. ..... 

4. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

14. .....

15. .....

17. .....

18. .....

22. .....

25. .....

26. .....

28. .....

31. ..... 

Total.

L..... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9...... 

10. .....

11......

13. ..... 

14. ..... 

15......

18. ..... 

19. ..... 

20......

22. ..... 

23...... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

October

Mean 

discharge

(cfs)

98 

112 

107 

112 

121

121 

112 

112 

116 

107

103 

116 

125 

130 

140

145 

140 

174 

150 

140

140 

150 

156 

162 

251

265 

230 

202 

251 

313 

305

4,906

Suspended sediment

Mean 

concentration 

(ppm)

650 

710 

560 

540 

530

500 

450 

470 

460 

460

370 

350 

410 

490 

530

750 

780 

1,090 

700 

650

640 

910 

820 

940 

1,160

2,850 

2,910 

2,090 

1,860 

2,120 

3,030

--

Tons 

per 

day

172 

215 

162 

163 

173

a 160 

136 

142 

144 

133

103 

110 

a 140 

172 

200

294 

295 

512 

284 

246

242 

369 

345 

411 

786

2,040 

1,810 

1,140 

1,260 

2,640 

2,500

17, 499

January

195 

202 

195 

202 

251

237 

195 

251 

244 

390

313 

281 

297 

313 

390

372 

281 

265 

188 

174

188 

202 

168 

181 

244

251 

195 

181 

209 

156 

135

7,346

1,200 

900 

1,510 

1,990 

1,990

2,080 

1,960 

1,600 

2,100 

4,440

5,760 

3,680 

3,540 

3,730 

3,440

2,990 

2,850 

2,200 

1,290 

2,150

1,530 

2,640 

1,500 

1,760 

2,600

2,470 

1,630 

1,610 

1,770 

1,040 

820

--

a 630 

491 

795 

1,090 

1,350

1,330 

1,030 

1,080 

1,380 

4,680

4,870 

2,790 

2,840 

3,150 

3,620

3,000 

2,160 

a 1,600 

655 

1,010

777 

1,440 

680 

860 

a 1,700

1,670 

858 

787 

999 

438 

299

50, 059

November

Mean 

discharge 

(cfs)

305 

321 

313 

244 

188

162 

168 

150 

174 

168

162 

145 

168 

145 

125

103 

116 

107 

116 

130

140

150 

140 

162 

181

195 

209 

188 

174 

181

5,230

Suspended sediment

Mean 

concentration 

(ppm)

2,110 

1,910 

1,900 

1,900 

1,760

1,740 

2,000 

2,000 

2,000 

1,610

1,330 

1,650 

1,530 

1,580 

2,080

1,900 

1,600 

1,480 

1,400 

1,700

2,680 

2,770 

1,800 

2,640 

2,850

2,200 

1,850 

1,390 

1,440 

1,320

Tons 

per 

day

1,740 

1,660 

1,610 

1,250 

893

761 

907 

810 

940 

730

582

646 

694 

619 

702

528 

501 

428 

3440 

597

1,010 

1,120 

a 680 

1,150 

1,390

a 1,200 

1,040 

706 

677 

645

26.656

February

125 

130 

156 

135 

145

195 

209 

265 

258 

313

354 

817 

1,040 

843 

923

950 

950 

1,060 

882 

843

869 

843 

923 

1,050 

1,090

951 

869 

804

17,992

1,770 

1,140 

1,400 

1,170 

1,500

1,250 

1,050 

1,100 

1,480 

3,200

2,700 

19,800 

27,000 

22,800 

26, 500

16,000 

12,400 

13,500 

8,400 

7,000

7,200 

7,100 

8,500 

8,800 

9,200

8,600 

6,400 

4,750

-

597 

400 

590 

426 

587

658 

593 

787 

1,030 

2,700

2,580 

s 54, 600 

s 79, 500 

s 52, 900 

s 66, 800

41,000 

31,800 

38, 600 

20,000 

15,900

16,900 

16, 200 

21,200 

24,900 

27, 100

22,100 

15,000 

10, 300

565,748

December

Mean 

discharge 

(cfs)

202 

202 

209 

209 

195

209 

209 

188 

125 

120

125 

170 

162 

188 

140

94 

140 

130 

98 

98

112 

120 

110 

100 

100

100 

110 

140 

160 

170 

190

4.625

Suspended sediment

Mean 

concentration 

(ppm)

1,200 

1,150 

1,410 

1,550 

960

2,000 

2,100 

2,000 

1,160 

1,850

1,740 

2,440 

3,350 

3,170 

2,620

1,340 

1,490 

1,600 

1,500 

2,690

2,500 

2,800 

1,280 

910 

850

900 

1,060 

930 

560 

1,770 

2.210

Tons 

per 

day .

a 650 

627 

796 

875 

a 510

1,130 

1,190 

1,020 

392 

599

587 

1,120 

1,470 

1,610 

990

340 

563 

a 560 

397 

712

8760 

907 

380 

246 

230

a 240 

31S 

352 

242 

812 

1.130

21.752

March

830 

1,120 

1,150 

1,120 

729

601 

505 

408 

515 

705

1,240 

1,140 

1,010 

830 

612

601 

634 

693 

693 

741

951 

1,150 

1,140 

765 

590

568 

645 

923 

1,060 

1,300 

1,480

26,449

5,200 

6,500 

7,700 

6,000 

4,300

3,700 

2,750 

2,400 

3,200 

4,200

11,300 

10,500 

7,800 

5,600 

4,500

3,250 

3,500 

3,600 

3,800 

4,000

4,700 

6,700 

7,500 

4,200 

3,250

1,800 

2,700 

4,400 

5,100 

5,700

s son

11,700 

19,700 

23, 900 

18,100 

8,460

6,000 

3,750 

2,640 

4,450 

a 8, 000

37,800 

32,300 

21,300 

12, 500 

7,440

5,270 

5,990 

6,740 

7,110 

8,000

12,100 

20,800 

23, 100 

8,680 

5,180

2,760 

4,700 

11,000 

14, 600 

20, 000 

M 9M

397, 270

s Computed by subdividing day.

a Computed from estimated concentration graph.
118 COLORADO RIVER BASIN

SAN JUAN RIVER BASIN Continued

SAN JUAN RIVER AT BLOOMFIELD, N. HEX . Continued

Suspended sediment, water year October 1956 to September 1957 --Continued

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.

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.

April

Mean 

discharge 

(cfs)

1,560 

1,500 

1,020 

693 

623

557 

612 

791 

729 

1,080

1,740 

2,290 

2,780 

3,090 

3,260

3,650 

3,510 

3,760 

3,320 

2,840

2,430 

2,660 

2,840 

2,410 

2,200

2,030 

1,670 

1,540 

1,420 

1,450

60, 055

Suspended sediment

Mean 

concentration 

(ppm)

6,100 

6,250 

3,900 

3,400 

2,700

2,200 

2,600 

3,000 

2,600 

3,600

7,200 

12, 300 

11,200 

9,250 

7,400

6,000 

5,300 

4,500 

3,500 

3,600

3,250 

3,000 

3,200 

3,200 

2,600

2,800 

2,250 

1,390 

830 

1,210

-

Tons 

per 

day

25, 700 

25, 300 

10, 700 

' 6, 360 

4,540

3,310 

4,300 

6,410 

5,120 

10, 500

33, 800 

76, 100 

84, 100 

77, 200 

65, 100

59, 100 

50, 200 

45, 700 

31, 400 

27, 600

21, 300 

21, 500 

24, 500 

20, 800 

a 15, 000

a 15, 000 

10, 100 

5,780 

3,180 

4,740

794, 440

July

8,580 

8,190 

7,500 

6,900 

6,500

5,750 

5,040 

4,730 

4,990 

4,780

4,060 

3,430 

3,090 

2,910 

2,680

2,340 

2,460 

2,950 

2,870 

3,630

3,230 

2,820 

2,630 

2,860 

3,190

8,760 

18,400 

13,800 

8,440 

6,920 

6,270

170,700

1,850 

1,650 

1,300 

1,400 

1,700

1,600 

1,700 

1,550 

2,100 

2,000

1,350 

900 

1,450 

1,000 

600

800 

950 

7,300 

6,300 

10,800

1,750 

1,100 

2,100 

4,300 

4,100

34,400 

20, 000 

7,900 

5,500 

4,400 

3.700

-

Total discharge for year (cfsTotal load for year (tons) ....

42, 900 

36,500 

26, 300 

26, 100 

29,800

24, 800 

23, 100 

19,800 

28, 300 

25, 800

14,800 

8,330 

12, 100 

7,860 

4,340

5,050 

6,310 

58, 100 

48,800 

si 14, 000

15, 300 

8,380 

14, 900 

33,200 

35, 300

s 974, 000 

994, 000 

294, 000 

125, 000 

82, 200 

62. 600

3,201,970

May

Mean 

discharge 

(cfs)

1,610 

1,840 

2,250 

2,910 

3,260

3,580 

4,230 

5,260 

5,310 

4,780

5,310 

5,420 

4,430 

3,670 

3,210

3,260 

2,870 

2,820 

2,840 

3,260

4,400 

3,360 

3,340 

3,190 

2,820

2,660 

2,700 

3,030 

4,180 

5,230 

5,470

112,500

Suspended sediment

Mean 

concentration 

(ppm)

1,460 

1,450 

2,780 

2,300 

2,960

2,920 

3,410 

4,240 

4,080 

3,400

3,450 

3,810 

2,440 

1,620 

1,950

1,220 

1,270 

1,150 

930 

2,230

3,330 

1,820 

2,300 

1,680 

1,530

1,210 

1,000 

1,200 

1,600 

1,890 

1,800

-

Tons 

per 

day

6,350 

7,200 

16, 900 

18, 100 

26, 100

28, 200 

38, 900 

60, 200 

58, 500 

43, 900

49, 500 

55,800 

29, 200 

16, 100 

16,900

10,700 

9,840 

8,760 

7,130 

19,600

39, 600 

16, 500 

2Q.700 

14, 500 

11,600

8,690 

7,290 

9,820 

18, 100 

26, 700 

26,600

727, 980

August

5,470 

3,540 

4,260 

3,920 

5,890

6,400 

6,800 

5,800 

2,990 

2,610

2,370 

2,360 

2,610 

2,050 

2,150

3,440 

3,770 

3,000 

2,480 

2,200

1,950 

1,680 

1,520 

1,460 

2,080

1,540 

1,670 

1,490 

1,290 

2,610 

5.830

97, 230

3,200 

6,700 

14,800 

10, 300 

38,400

39,000 

26,700 

6,200 

2,600 

3,400

1,900 

3,480 

26,300 

7,600 

28,300

39,900 

45,800 

15,000 

10,400 

6,900

3,500 

2,900 

3,800 

3,340 

23,700

6,000 

3,100 

2,400 

2,000 

38,200 

68.000

47,300 

64,000 

170,000 

109, 000 

8 687, 000

699,000 

490, 000 

97,100 

21,000 

24, 000

12, 200 

s 27, 600 

s 188, 000 

42,100 

s 197, 000

s 395, 000 

s 519, 000 

122, 000 

69, 600 

41, 000

18, 400 

13, 200 

15,600 

s 19, 400 

133, 000

24,900 

14,000 

9,660 

6,970 

s 335, 000 

1.110.000

5,722,030

June

Mean 

discharge 

(cfs)

5,720 

6,150 

7,050 

8,440 

9,700

10, 300 

10,600 

9,420 

9,140 

9,460

8,720 

7,700 

6,990 

7,400 

7,600

6,300 

5,260 

5,150 

5,980 

7,240

8,610 

8,190 

7,740 

8,050 

8,580

8,920 

8,780 

8,720 

9,140 

8,960

240, 010

Suspended sediment

Mean 

concentration 

(ppm)

1,860 

2,300 

3,620 

5,300 

5,550

5,500 

5,200 

4,650 

4,300 

3,900

3,600 

3,500 

3,200 

3,650 

2,450

2,700 

2,200 

2,800 

2,500 

2,900

3,300 

3,100 

3,800 

3,200 

3,000

2,600 

2,300 

2,200 

1,950 

1,800

-

Tons 

per 

day

28,700 

38, 200 

68, 900 

121,000 

145, 000

153,000 

149, 000 

118,000 

106, 000 

99,600

84,800 

72,800 

60,400 

72,900 

50,300

45,900 

31, 200 

38, 900 ' 

40,400 

56, 700

76,700 

68, 600 

79,400 

69,600 

69, 500

62,600 

54, 500 

51,800 

48, 100 

43,500

2, 206, 000

September

3,900 

2,780 

2,360 

2,050 

1,830

1,670 

1,430 

1,290 

1,220 

1,150

1,070 

991

947 

881 

840

725 

707 

840 

840 

810

790 

716 

680 

680 

716

734 

743 

632 

640 

672

35, 334

29,500 

8,500 

4,000 

3,200 

2,750

1,350 

900 

850 

750 

1,400

1,450 

950 

800 

725 

550

790 

930 

840 

580 

1,400

840 

800 

870 

2,300 

1,500

1,800 

2,600 

2,100 

780 

720

toys) .............................................................

311,000 

63,800 

25, 500 

17,700 

13, 600

6,090

3,470 

2,960 

2,470 

4,350

4,190 

2,540 

2,050 

1,720 

1,250

1,550 

1,780 

1,910 

1,320 

3,060

1,790 

1,550 

1,600 

4,220 

2,900

a 3, 600 

a 5, 200 

3,580 

1,350 

1,310

499,410

782, 377 

14, 230, 814

s Computed by subdividing day.

a Computed from estimated concentration graph.
SAN JUAN RIVER BASIN Continued 

SAN JUAN RIVER AT BLOOMFIELD, N. MEX.--Continu

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, in 

Date 

of 

collection

Oct. 29, 1956 ....

Jan. 10, 1957 ....

Aug. 20 .........

Time

4:1$ p.m. 

6:45"p.m. 

7:00 p.m. 

3:00 p.m. 

7:00 a.m.

11:10 a.m. 

6:15 p.m. 

10: 25 a.m. 

10:25 a.m 

3:45 p.m.

11:25 a.m. 

12:30 p.m. 

7:30 p.m. 

' 5:45 p.m. 

10:40 a.m.

7:15 p.m. 

5:00 p.m. 

8:00 a.m. 

10:00 a.m. 

12:05 p.m.

6:30 a.m. 

1:30 p.m. 

1:30 p.m. 

2:30 p.m. 

5:45 p.m.

Discharge 

(cfs)

244 

244 

741 

156 

1,040

417 

1,400 

1,740 

1,740 

3,230

1,530 

5,230 

3,400 

11,500 

9,030

5,120 

9,420 

7,570 

2,910 

2,820

20, 700 

2,140 

2,140 

2,140 

616

Water 

temperature 

(°F)

50 

35 

32 

46 

34

47 

43 

53 

53

54

52 

64 

59 

58

58 

64 

54 

64 

64

60 

75 

75 

75 

48

Suspended sedi

Concentration 

of sample 

(ppm)

1,850 

3,320 

5,870 

1,250 

27,100

1,920 

7,510 

14, 800 

14,800 

10, 500

1,500 

6,330 

1,580 

5,330 

4,490

2,090 

3,300 

1,450 

3,470 

2,860

25,700 

9,510 

9,510 

6,330 

649

Concentration 

of suspension 

analyzed 

(ppm)

2,690 

2,460 

3,400 

2,470 

4,750

3,450 

4,350 

10,200 

11,000 

3,410

4,660 

2,940 

2,900 

4,130

2,500

4,880

4,570 

6,170 

5,160 

3,610

Percent finer 

0.002

22

2

-

-

"

30 

10

0.004

31 

10 

8 

10 

43

27 

31 

29 

11 

6

9 

10 

22 

13

9

45

42 

36 

32

41

0.008

38 

39

~

-

-

43 

42

0.016

38 

15 

11 

14 

56

35 

43 

49 

51 

8

14 

17 

36 

23

18

62

62 

47 

49 

55

0
SAN JUAN RIVER BASIN Continued 

SAN JUAN RIVER AT BLOOMFIELD, N. MEX.--Continue

Particle-size analyses of bed material, water year October 1956 to Sept

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, in d

Date of collection Time

10:45 a.m. 

2:00 p.m. 

11:55 a.m. 

3:10 p.m.

Discharge 

(cfs)

3,180 

1,890 

402 

3,590

Water 

temperature 

(°F)

56 

72 

47 

54

Number of 

sampling 

points

4 

4 

12 

6

Bed m

Percent finer than indica

0.0625

3

0.125

1 

1 

8 

1

0.25

10 

12 

29 

10

0.5

45 

52 

73 

39

1.0

86 

94 

97 

81
SAN JUAN RIVER BASIN--Continued 

ANIMAS RIVER AT FARMINGTON, N. MEX.

LOCATION. At gaging station at bridge on State Highway 17, 0.6 mile southeast of Farmington, San Juan 

DRAINAGE AREA. 1,360 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: June 1940 to September 1957. 

Water temperatures: December 1950 to September 1957. 

Sediment records: December 1950 to September 1957.

EXTREMES, 1956-57. Dissolved solids: Maximum, 862 ppm Oct. 1-24; minimum, 125 ppm June 20-30. 

Hardness: Maximum, 490 ppm Oct. 1-24; minimum, 80 ppm July 1-7.

Specific conductance: Maximum daily, 1,270 micromhos Oct. 11; minimum daily, 180 micromhos June ^9

Water temperatures: Maximum, 75°F Aug. 22; minimum, freezing point on several days in December and 

Sediment concentrations: Maximum daily, 18,000 ppm July 18; minimum daily, 3 ppm Oct. 13. 

Sediment loads: Maximum daily, 121,000 tons July 27; minimum daily, less than 0.50 ton Oct. 13-14.

EXTREMES, 1940-57. Dissolved solids (1940-49, 1952-54, 56-57): Maximum, 1,500 ppm Aug. 19, 1949; min

Hardness (1956-57): Maximum, 490 ppm Oct. 1-24, 1956; minimum, 80 ppm July 1-7, 1957.

ay, m

- , , , , 

Sediment loads (1950-57): Maximum daily, 337,000 tons July 23, 1954; minimum daily, less than 0.50 

REMARKS. Records of specific conductance of daily samples available in district office at Albuquerque

October 1956 to September 1957 given in WSP 1513. Flow affected by ice Nov. 20 to Dec. 3, Dec. 8 

Chemical analyses, in parts per million, water year October 1956 to 

Dote of collection

Oct. 1-24, 1956 ..... 

Oct. 25-Nov. 30..... 

Dec. 1-Jan. 31, 1957 

Feb. 1-10. ..........

Feb. 11-28..........

Mar. 30-31 .........

Apr. 12-13...........

Apr. 14-16..........

Apr. 26-30..........

Mean 

discharge 

(cfs)

46.9 

194 

192 

223 

349

296 

358 

345 

756 

1,203 

1,341 

887

Silica 

(SiO,)

10 

11 

10

8.6

Iron 

(Fe)

0.00 

.01 

.00

.06

Calcium 

(Ca)

152 

128 

121 

117 

99

106 

97 

94 

85 

71 

54 

62

Magnesium 

(Mg)

27 

22 

17 

18 

15

20 

17 

18 

17 

17 

10 

13

Sodium 

(Na)

90 

84 

79 

70 

66

66 

52 

28 

34 

21 

16 

23

Potassium 

(K)

6.0 

6.9 

6.3

2.7

Bicarbonate 

(HCO,)

227 

239 

193 

188 

189

197 

179 

182 

190 

168 

130 

13R

Carbonate 

(CO,)

Sulfate 

(SO,)

412 

312 

305

118

Chloride 

(Cl)

46 

51 

48

14

Fluoride 

(F)

0.6 

.6 

.6

Nitrate 

(NO,)

0.6 

1.4 

1.6

1.5

B

ro

(B

0.2

.2

.

.2
SAN JUAN RIVER BASIN Continued

ANIMAS RIVER AT FARMINGTON, N. MEX.--Contin

Chemical analyses, in parts per million, water year October 1956 to Septe

Date of collection

Sept 14-19

Weighted average . .

Mean 

discharge 

(cfs)

1,048 

2,710 

2,420 

1,658 

1,570 

1,358 

2,680

6,321 

7,338 

4,155 

6,861 

5,024 

3,257 

2,300 

2,090 

2,340 

4,520 

5,572

2,450 

3,090 

1,952 

1,040 

2,160 

1,114 

697 

538 

328

1,339

Silica 

(S102)

10

"

Iron 

(Fe)

0.01

-

Calcium 

(Ca)

69 

52 

44 

54 

65 

56 

45

40 

35 

37 

30 

28 

31 

35 

62 

38 

52 

44

33 

56 

35 

42 

48 

61 

69 

77 

89

47

Magnesium 

(Mg)

9.2 

5.2 

5.0 

6.4 

5.7 

7.4 

5.0

3.3 

2.6 

2.6 

1.9 

2.4 

2.6 

3.8 

5.7 

3.6 

5.0 

3.1

5.2 

5.0 

5.2 

7.1 

4.7 

6.2 

7.1 

12 

13

5.5

Sodium 

(Na)

23 

9.7 

9.1 

14 

41 

17 

8.3

5.7 

4.6 

6.7 

4.2 

4.8 

7.0 

10 

26 

11 

28 

8 . 2

a

26 

14 

25 

13 

20 

29 

37 

47

15

Potassium 

(K)

0.9

-

Bicarbonate 

(HCO,)

154 

132 

103 

127 

152 

133 

113

103 

81 

86 

69 

61 

64 

72 

210 

82 

al!5 

111

b70 

c!07 

a80 

c81 

117 

129 

142 

156 

177

103

Carbonate 

(CO,)

Sulfate 

(SO,)

35

-

Chloride 

(Cl)

3.8

-

Fluoride 

(F)

0.3

-

Nitrate 

(NO,)

0.4

-

B

r

(

0.0

a Includes 3 parts per million of carbonate (CO 3 ). 

b Includes 5 parts per million of carbonate (CO3 ). 

c Includes 4 parts per million of carbonate (CO 3 ).
SAN JUAN RIVER BASIN

SAN JUAN RIVER BASIN Continued

ANIMAS RIVER AT FARMINGTON, N. MEX. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Qnce-daily measurement, generally between 12 m. and 7 p. m.7

123

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

Average

Oct.

a 65

65

67

68

68

68

69

62

62

62

63

58

58

61

60

62

61

57

56

56

55

52

50

49

51

54

51

48

49

50

59

Nov.

41

42

43

45

46

48

48

48

48

48

49

49

47

42

39

39

39

39

37

33

34

36

37

40

40

39

38

37

38

39

42

Dec.

38

38

37

37

b37

b38

40

36

b33

33

37

36

b37

38

37

35

35

36

34

32

32

33

32

33

32

32

32

32

32

32

33

35

Jan.

3336 '

35

37

38

40

35

38

37

32

39

41

40

43

40

37

35

34

b34

32

34

35

32

36

38

37

39

37

39

37

34

37

Feb.

35

b35

41

40

39

39

42

45

42

47

48

47

48

b45

49

50

b43

b43

46

46

b48

43

50

b47

a 41

47

48

44

Mar.

45

47

44

45

45

49

50

52

49

53

51

b50

46

46

47

48

53

51

52

52

53

45

44

49

b49

54

53

54

51

59

59

50

Apr.

49

45

50

50

b50

52

48

51

54

58

59

56

58

56

54

56

56

50

52

54

56

51

46

52

b43

53

51

48

49

58

52

May

60

65

64

60

56

55

53

52

56

53

51

48

a 47

56

54

55

58

60

55

51

51

a 47

55

55

60

60

63

65

63

60

57

56

June

58

60

59

58

60

57

58

58

59

68

52

58

b59

58

53

56

58

61

60

b59

b57

b58

62

61

b60

60

62

64

b60

61

59

July

b61

62

65

65

66

64

65

b62

65

65

63

b67

65

68

b67

a 62

a 63

65

67

67

67

65

60

58

b9

60

62

a 58

67

69

69

64

Aug.

72

69

70

67

66

67

69

71

70

71

69

72

71

68

72

73

71

72

72

72

74

75

b70

73

71

a 64

71

71

64

67

63

70

Sept.

64

64

64

66

65

65

68

b65

66

67

64

64

65

66

64

63

b63

b61

b62

b61

62

64

65

64

64

65

b62

65

67

67

64

d Measurement obtained before 12:00 m. 

b Measurement obtained after 7:00 p.m.
COLORADO RIVER BASIN

SAN JUAN RIVER BASIN Continued

ANIMAS RIVER AT FARMINGTON, N. HEX .--Continued

Suspended sediment, water year October 1956 to September 1957

Day

1......

2. ... ..

3. .....

5. .....

6......

8. .....

9. .....

10. .....

12......

14. ..... 

15. .....

16......

17. .....

18. ..... 

19. ..... 

20. .....

25......

29......

31......

Total .

1...... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9. ..... 

10. .....

13. ..... 

14. ..... 

15......

16. .....

lp

19. .....

20. .....

23. ..... 

24. ..... 

25. .....

26. .....

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31......

Total.

October

Mean 

discharge 

(cfs)

1 30

40 

40 

60

65

> 70

259

218 

204 

186 

210 

251 

243

2,696

Suspended sediment

Mean 

concentration 

(ppm)

9

3 

4 

10

19 

16

120

270 

170 

210 

330 

710 

150

--

Tons 

per 

day

1

(t) 

(t) 

2

3 

3

84

159 

94 

105 

187 

481 

98

1,250

January

200 

200 

193 

207 

210

218 

235 

267 

320 

302

218 

204 

239 

235 

239

207 

175 

175 

170 

170

190 

176 

168 

182 

190

196 

193 

214 

200 

168 

172

6,433

76 

133 

82 

43 

57

24 

63 

80 

1,830 

490

210 

110 

1,340 

980 

330

585 

310 

150 

265 

155

157 

94 

104 

178 

86

90 

51 

137 

93 

52 

90

-

41 

72 

43 

24 

32

14

40 

58 

1,580 

400

124 

61 

865 

622 

213

327 

146 

71 

122 

71

81 

45 

47 

87 

44

48 

27 

79 

50 

24 

42

5,500

November

Mean 

discharge 

(cfs)

232 

221 

224 

207 

193

204 

210 

182 

182 

176

172 

165 

147 

147 

150

150 

147 

165 

179 

180

180 

190 

190 

200 

200

200 

200 

200 

200 

200

5,593

Suspended sediment

Mean 

concentration 

(ppm)

100 

74 

60 

45 

58

50 

53 

53 

35 

26

19 

16 

16 

20 

56

47 

96 

54 

67 

74

105 

183 

58 

34 

45

156 

76 

87 

88 

78

--

Tons 

per 

day

63 

44 

36 

25 

30

28 

30 

26 

17 

12

9 

7 

6 

8 

23

19 

38 

24 

32 

36

51 

94 

30 

18 

24

84 

41 

47 

48 

42

992

February

162 

200 

210 

214 

204

207 

221 

235 

251 

330

280 

335 

355 

311 

345

316 

330 

345 

330 

320

380 

395 

405 

468 

390

330 

340 

306

8,515

81 

140 

107

50

54 

63 

67 

340 

1,570

1,050 

1,080 

1,130 

660 

1,380

750 

680 

1,330 

1,880 

1,160

1,360 

1,440 

1,550 

2,150 

2,430

1,780 

1,470 

980

--

35 

76 

61 

a 60 

28

30 

38 

43 

230 

1,400

794 

977 

1,080 

554 

1,290

640 

606 

1,240 

1,680 

1,000

1,400 

1,540 

1,690 

2,720 

2,560

1,590 

1,350 

810

25,522

December

Mean 

discharge 

(cfs)

200 

200 

200 

200 

204

210 

214 

180 

160 

150

155 

165 

175 

190 

200

170 

150 

150 

150 

160

170 

170 

170 

160 

150

150 

160 

170 

180 

190 

190

5,443

Suspended sediment

Mean 

concentration 

(ppm)

90 

62 

20 

102 

75

44 

64 

28 

43 

44

52 

133 

32 

20 

20

25 

18 

23 

36 

44

48 

66 

56 

73 

58

57 

90 

179 

154 

131 

86

--

Tons 

per 

day

49 

33 

11 

55 

41

25 

37 

14 

19 

18

22 

59 

15 

10 

11

11

7 

9 

15 

19

22 

30 

26 

32 

23

23 

39 

82 

75 

67 

44

943

March

325 

370 

426 

360 

267

243 

250 

267 

298 

298

350 

325 

302 

298 

280

251 

259 

263 

263 

298

288 

302 

306 

288 

255

259 

284 

298 

306 

345 

370

9,294

810 

1,210 

1,700 

1,900 

1,050

500 

350 

330 

970 

2,150

1,050 

1,560 

700 

790 

380

220 

188 

204 

310 

256

514 

605 

824 

264 

140

107 

146 

435 

346 

425 

504

--

711 

1,210 

1,960 

1,850 

757

328 

236 

238 

780 

1,730

992 

1,370 

571 

636 

287

149 

131 

145 

220 

206

400 

493 

681 

205 

96

75 

112 

350 

286 

396 

503

18, 104

t Less than 0.50 ton.

a Computed from water-sediment discharg
SAN JUAN RIVER BASIN 

SAN JUAN RIVER BASIN Continued

ANIMAS RIVER AT FARMINGTON, N. HEX. Continued 

Suspended sediment, water year October 1956 to September 1957 Continued

125

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.

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.

April

Mean 

discharge 

(cfs)

355 

375 

405 

400 

345

311 

311 

316 

280 

298

400 

613 

900 

1,120 

1,180

1,310 

1,610 

1,660 

1,600 

1,280

1,070 

1,210 

1,360 

1,200 

1,080

1,000 

843 

834 

880 

880

25,426

Suspended sediment

Mean 

concentration 

(ppm)

439 

432 

386 

460 

1,190

370 

400 

310 

260 

210

900 

1,740 

2,910 

3,100 

2,700

2,600 

3,110 

3,100 

1,940 

1,020

840 

1,150 

1,350 

1,760 

1,730

1,200 

740 

380 

680 

2,520

~

Tons 

per 

day

421 

437 

422 

497 

1,110

311

336 

264 

197 

169

972 

2,880 

7,070 

9,370 

8,600

9,200 

13,500 

13,900 

8,380 

3,530

2,430 

3,760 

4,960 

5,700 

5,040

3,240 

1,680 

856 

1,620 

5,990

116,842

July

6,040 

5,770 

5,440 

4,880 

4,830

4,460 

3,750 

3,490 

3,120 

3,160

2,890 

2,550 

2,320 

2,090 

2,050

2,010 

2,190 

2,090 

2,240 

2,660

2,870 

2,270 

2,010 

2,190 

2,140

4,520 

9,260 

7,170 

4,460 

3,790 

3,180

111,890

500 

500 

410 

382 

389

346 

323 

254 

267 

246

212 

166 

147 

173 

146

119 

10, 000 

18,000 

850 

1,050

620 

360 

260 

380 

500

7,330 

4,850 

1,900 

1,450 

820 

825

--

Total discharge for year (cfsTotal load for year (tons). ....

8,150 

7,790 

6,020 

5,030 

5,070

4,170 

3,270 

2,390 

2,250 

2,100

1,650 

1,140 

921 

976 

808

646 

9b82,000 

102, 000 

5,140 

7,540

4,800 

2,210 

1,410 

2,250 

2,890

si 12, 000 

121,000 

36,800 

17,500 

8,390 

7,080

565,391

May

Mean 

discharge 

(cfs)

756 

834 

1,120 

1,480 

2,030

2,680 

3,020 

3,120 

2,700 

2,420

2,550 

2,240 

1,920 

1,630 

1,490

1,420 

1,280 

1,210 

1,180 

1,570

1,530 

1,400 

1,270 

1,250 

1,160

1,080 

1,150 

1,480 

1,900 

2,460 

2,900

54, 230

Suspended sediment

Mean 

concentration 

(ppm)

750 

490 

950 

1,820 

2,080

2,720 

2,660 

3,660 

1,440 

1,020

1,930 

1,520 

870 

660 

500

490 

420 

500 

390 

3,450

1,160 

600 

302 

254 

171

153 

212 

420 

1,000 

1,230 

1,290

--

Tons 

per 

day

1,530 

1,100 

2,870 

7,270 

11,400

19,700 

21,700 

30, 800 

10,500 

6,660

13,300 

9,190 

4,510 

2,900 

2,010

1,880 

1,450 

1,630 

1,240 

14, 600

4,790 

2,270 

1,040 

857 

536

446 

658 

1,680 

5,130 

8,170 

10,100

201,917

August

2,810 

2,620 

2,360 

2,190 

2,270

3,090 

3,750 

2,940 

2,480 

2,210

1,970 

1,800 

1,820 

1,660 

1,520

1,430 

1,330 

1,290 

1,170 

1,030

940 

880 

880 

798 

772

772 

861 

807 

980 

1,350 

2,410

53, 190

500 

3,810 

520 

420 

1,500

10,600 

6,440 

1,270 

750 

580

630 

900 

4,000 

310 

210

325 

330 

206 

144 

132

112 

92 

68 

82

169 

182 

150 

1,670 

5,950 

7.800

3,790 

s 28, 900 

3,310 

2,480 

9,190

88,400 

869,200 

10, 100 

5,020 

3,460

3,350 

4,370 

19,700 

1,390 

862

1,250 

1,190 

717 

455 

367

a 300 

266 

219 

147 

171

352 

423 

327 

s5,930 

21,700 

50. 800

338,136

June

Mean 

discharge 

(cfs)

3,270 

3,790 

4,690 

6,070 

7,870

9,260 

9,300 

7,840 

7,310 

7,380

6,820 

4,610 

4,260 

4,800 

4,780

4,160 

3,330 

3,140 

4,160 

5,650

7,520 

7,310 

6,280 

6,160 

6,610

7,160 

6,960 

7,340 

7,900 

6,640

182,310

Suspended sediment

Mean 

concentration 

(ppm)

1,340 

1,480 

2,000 

2,340 

3,440

2,180 

1,530 

1,100 

920 

1,150

850 

1,000 

660 

655 

560

410 

350 

370 

680 

1,000

1,200 

940 

650 

640 

750

920 

800 

860 

820 

660

--

Tons 

per 

day

11,800 

15, 100 

25,300 

38, 400 

73,100

54, 500 

38, 400 

23,300 

18, 200 

22,900

15,700 

12,400 

7,590 

8,490 

7,230

4,610 

3,150 

3,140 

7,640 

15,300

24, 400 

18,600 

11,000 

10,600 

13,400

17, 600 

15,000 

17,000 

17,500 

11,800

563, 150

September

2,850 

2,340 

,880 

,570 

,360

,210 

,110 

,000 

900 

825

708 

636 

620 

585 

557

536 

522 

515 

515 

456

415 

426 

360 

325 

284

280 

275 

271 

259 

255

23,855

2,700 

1,200 

678 

412 

310

253 

262 

139 

126 

118

88 

56 

34 

32 

25

36 

28 

35 

25 

24

33 

22 

28 

26 

46

22 

36 

27 

19 

28

Jays). ............................................................

20,800 

7,580 

3,440 

1,750 

1,140

827 

778 

375 

306 

263

168 

96 

57 

51 

38

52 

39 

49 

35 

30

37 

25 

27 

23 

35

17 

27 

20 

13 

19

38,117

488,855 

1,875,864

s Computed by subdividing day. 

a Computed from water-sediment discharge curve, 

b Computed from partly estimated concentration graph.
SAN JUAN RIVER BASIN Continued

Date 

of 

collection

Oct. 24, 1956 ...

Jan. 9, 1957. ....

Aug. 20 ........

Time

8:00 a.m. 

6:40 a.m. 

5:20 p.m. 

11:00 a.m. 

6:25 a.m. 

3:50 p.m.

4:10 p.m. 

10:05 a.m. 

8:00 a.m. 

3:50 p.m. 

10:30 a.m. 

5:40 p.m.

4:20 p.m. 

5:30 p.m. 

4:35 p.m. 

7:40 p.m.

7:45 a.m. 

7:20 p.m. 

6:10 p.m. 

7:50 a.m. 

4:30 p.m.

Discharge 

(cfs)

70 

243 

335 

190 

415 

536

474 

284 

370 

1,770 

2,830 

1,650

4,260 

9,950 

7,200 

8,360

4,180 

2,210 

9,700 

4,560 

1,020

Water 

temperature 

(° F)

45 

40 

37 

37 

38 

50

44 

47 

48 

53 

62 

51

60 

57 

57 

60

56 

65 

62 

60 

72

Suspended sedim

Concentration 

of sample 

(ppm)

74 

868 

4,080 

36 

2,050 

2,540

1,900 

3,680 

443 

4,220 

2,160 

3,910

2,140 

2,650 

748 

1,090

340 

265 

2,840 

2,050 

145

Concentration 

of suspension 

analyzed 

(ppm)

2,140 

4,360

5,310 

3,210

4,890 

4,440 

1,110 

2,720 

3,460 

3,610

3,050 

4,180 

1,950

4,350 

4,070

Percent finer t

0.002 0.004

72 

74

72 

65

61 

83 

52 

4 

21 

51

14 

20 

19

23 

36

0.008 0.016

95 

96

90 

91

90 

98 

78 

12 

32 

76

26 

35 

30

37 

55

0.0

Particle-size analyses of bed material, water years October 1955 to Sept

Date of collection

May 13, 1955 ..... 

May 25, 1956 .....

Mar. 10, 1957.....

Time

2:30 p.m. 

3:00 p.m. 

4:20 p.m. 

10:00 a.m.

Discharge 

(cfs)

1,240 

2,480 

2,070 

284

Water 

temperature 

<°F)

61 

58 

67 

47

Number of 

sampling 

points

3 

4 

3 

9

Bed mat

Percent finer than indicate

0.062

0 

0 

0 

3

0.125

6 

6
SAN JUAN RIVER BASIN Continued 

SAN JUAN RIVER AT SHIPROCK, N. HEX

LOCATION. At gaging station 3 miles west of Shiprock, San Juan County, and 6 miles downstream 

DRAINAGE AREA. 12,900 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: July to September 1957.

Water temperatures: December 1950 to September 1957.

Sediment records: December 1950 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 79°F Aug. 20; minimum, freezing point on seve

Sediment concentrations: Maximum daily, 48,000 ppm Aug. 6; minimum daily, 101 ppm Oct. 3.

Sediment loads: Maximum daily, 1,700,000 tons July 27; minimum daily, 13 tons Oct. 1. 

EXTREMES, 1950-57. Water temperatures: Maximum, 83°F June 25, 1954; minimum, freezing point o

Sediment concentrations: Maximum daily, 86,000 ppm Aug. 14, 1955; minimum daily, 8 ppm July 

Sediment loads: Maximum daily, 1,700,000 tons July 27, 1957; minimum daily, 2 tons Sept. 16, 

REMARKS. Records of specific conductance of daily samples available in district office at Albuq

October 1956 to September 1957 given in WSP 1513. Flow affected by ice Nov. 15-16, 20-22, D

Chemical analyses, in parts per million, July to Septe

Date of collection

July 1-10, 1957..

July 26-27 ......

July 28 -Aug. 1 .. 

Aug. 2-5........

Sept. 15-17. .....

Sept. 18-30 .....

Mean 

discharge 

(cfs)

10, 320 

5,119 

5,230 

5,540 

4,678 

16,700 

14,110

7,160 

12, 200 

9,200 

4,910 

4,050 

4,685 

2,979 

4,040

2,940 

2,540 

2,600 

6,375 

8,400 

2,778 

1,290 

922

Silica 

(Si02)

11 

11 

10 

15 

11 

12 

14

14 

13 

14 

14 

14 

17 

15 

14

15 

16 

17 

20 

13 

14 

12 

13

Iron 

(Fe)

Calcium 

(Ca)

29 

35 

100 

54 

38 

64 

42

52 

89 

59 

53 

62 

72 

58 

67

64 

67 

55 

98 

57 

54 

61 

67

Magnesium 

(Mg)

1.6 

3.6 

7.1 

5.2 

4.7 

3.8 

4.5

5.9 

9.0 

5.2 

5.2 

6.6 

7.1 

7.1 

7.1

6.6 

6.2 

5.4 

8.0 

4.3 

6.6 

9.0 

12

Sodium 

(Na)

Potassium 

(K)

13 

18 

50 

29 

20 

62 

18

29 

75 

65 

26 

39 

78 

36 

57

128 

61 

55 

106 

75 

34 

45 

50

Bicarbonate 

(HCO,)

73 

83 

221 

151 

97 

210 

120

145 

203 

a 198 

135 

155 

205 

149 

196

237 

167 

154 

223 

200 

132 

135 

144

Sulfate 

(SO,)

38 

60 

183 

79 

65 

122 

54

85 

234 

129 

85 

117 

187 

109 

133

242 

161 

125 

292 

139 

107 

143 

173

Chloride 

(Cl)

4.5 

7.2 

11 

9.0 

7.5 

8 

4.8

6.5 

9 

8 

7.5 

10 

11 

9.8 

14

13 

15 

14 

14 

8 

11 

17 

18

Fluoride 

(F)

Nitrate 

(NO,)

0.8 

1.7 

.1 

.3 

1.1 

.3 

1.1

1.8 

.4 

.4 

1.3 

3.8 

.3 

2.8 

1.0

.4 

.7 

2.6 

1.3 

2.5 

1.8 

2.8 

3.0

Bo

ron 

(B)

0.07 

.09 

.13 

.05 

.05 

.15 

.05

.06 

.12 

.05 

.05 

.06 

.07 

.07 

.06

.12 

.11 

.09 

.08 

.13 

.10 

.06 

.10

a Includes equivalent of 4 parts per million of carbonate (CO3 ).
128 COLORADO RIVER BASIN

SAN JUAN RIVER BASIN Continued

SAN JUAN RIVER AT SHIPROCK, N. HEX. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement, generally between 2 p.m. and 9 p.m.7

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

Average

Oct.

a 54

a 52

a 55

a 58

a 55

a 55

68

a 55

a 52

a 47

a 53

a 47

62

a 45

a 44

a 51

a 50

a 44

55

a41

a41

a 38

a 40

a 40

54

a 39

a 39

49

Nov.

a 42

a32

a 33

43

"

a 34

a 38

a 38

a 38

a 39

b46

42

a35

a 33

a 32

33

38

36

34

b33

37

42

37

38

37

34

36

37

Dec.

37

b37

38

39

42

44

a 38

31

31

32

35

35

34

33

32

32

32

32

_

32

32

32

32

35

35

b34

35

35

34

Jan.

35

35

34

37

38

38

34

a 32

35

39

40

41

39

32

35

34

35

a 33

32

32

33

35

35

39

35

37

34

34

35

Feb.

34

35

37

40

35

39

42

47

b42

49

48

45

44

44

49

49

44

48

47

46

54

50

46

46

47

47

--

44

Mar.

_

43

44

44

49

52

52

52

49

50

a 44

44

46

47

50

49

51

49

a 42

b40

47

51

50

51

53

51

56

48

Apr.

a 49

45

46

52

55

46

49

54

a45

47

54

58

54

57

56

54

b53

53

52

b54

50

48

51

50

52

51

b50

52

58

--

52

May

63

60

a 57

63

b60

58

a 54

55

55

54

52

54

57

54

57

60

60

b56

50

51

57

51

50

60

62

66

70

66

62

63

58

June

63

63

65

a 57

65

61

62

62

60

53

55

60

62

64

59

57

59

63

64

69

63

a 55

64

66

64

67

69

68

70

67

--

63

July

67

67

68

a 67

67

66

68

a 64

70

a 66

a 64

71

a67

72

73

72

69

b72

69

70

a 65

72

65

66

63

68

69

71

a 66

72

68

Aug.

70

72

72

70

70

-.

72

72

73

72

73

73

73

74

a 69

69

73

75

75

79

76

74

75

a 69

73

a 66

a 65

73

70

66

a 62

72

Sept.

67

66

72

65

a 65

--

72

72

a 61

67

65

68

a 58

64

66

a 57

a 58

a 52

a 55

63

a 55

64

a 53

a 55

a 54

a 54

67

66

68

~

62

a Measurement obtained before 8 a.m.

b Measurement obtained between 8 a.m. and 2 p.m.
SAN JUAN RIVER BASIN 

SAN JUAN RIVER BASIN Continued

SAN JUAN RIVER AT SHIPROCK, N. HEX. Continued 

Suspended sediment, water year October 1956 to September 1957

Day

1......

2. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

11......

12. ..... 

13. ..... 

14. ..... 

15. .....

16. .....

18. ..... 

19. .....

21......

22. .....

24. .....

29. .....

30. ..... 

31......

Total.

1...... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9. ..... 

10. .....

1 ^

15. .....

18. .....

20. .....

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

October

Mean 

discharge 

(cfs)

39 

62 

82 

102 

97

109 

102 

104 

102 

120

120 

120 

128 

145 

160

182 

192 

212 

234 

234

246 

269 

282 

298 

368

571 

617 

610 

590 

558 

590

7,645

Suspended sediment

Mean 

concentration 

(ppm)

128 

129 

101 

143 

102

125 

111 

145 

130

147 

117 

171 

330 

322

556 

655 

985 

942 

709

575 

1,060 

900

1,200

4,650 

3,600 

2,900 

2,600 

3,400 

3,450

--

Tons 

per 

day

13 

22 

22 

39 

27

37 

31 

41 

36 

e50

48 

38 

59 

129 

139

273 

340 

564 

595 

448

382 

770 

685 

e800 

1,190

7,170 

6,000 

4,780 

a 4, 100 

5,120 

5,500

39,448

January

378 

480 

457 

457 

515

527 

527 

577 

584 

660

645 

712 

729 

667 

721

712 

604 

597 

540 

446

452 

534 

509 

368 

509

564 

571 

571 

577 

534 

425

17,149

500 

1,300 

1,050 

1,050 

1,750

2,200 

2,300 

1,500 

1,700 

2,900

4,400 

3,700 

3,050 

5,950 

4,300

3,560 

4,700 

4,500 

2,200 

1,300

,130 

,250 

,700 

,250 

,500

2,800 

1,900 

850 

1,100 

900 

1,150

--

510 

1,680 

1,300 

1,300 

2,430

3,130 

a 3, 300 

a 2, 300 

2,680 

5,170

7,660 

7,110 

6,000 

10,700 

8,370

6,820 

a7,700 

7,250 

3,210 

1,570

1,380 

1,800 

2,340 

1,240 

2,060

4,260 

2,930 

1,310 

1,710 

1,300 

1,320

111,840

November

Mean 

discharge

(cfs)

604 

558 

597 

571 

546

480 

463 

474 

486 

503

463 

446 

509 

540 

480

440 

420 

420 

430 

360

300 

400 

469 

469 

503

527 

509 

503 

469 

441

14, 380

Suspended sediment

Mean 

concentration 

(ppm)

2,850 

2,550 

2,500 

1,400 

700

1,300 

1,300 

1,050 

1,300 

1,500

1,450 

1,650 

1,300 

1,050 

500

1,350 

1,500 

1,450 

2,500 

1,300

500 

1,250 

1,600 

1,350 

1,350

2,250 

2,100 

1,300 

1,450 

2,350

-

Tons 

per 

day

4,650 

3,840 

4,030 

2,160 

a 1,000

1,680 

1,630 

1,340 

1,710 

2,040

1,810 

1,990 

1,790 

1,530 

648

1,600 

1,700 

1,640 

a 2, 900 

a 1,300

405 

1,350 

a 2, 000 

1,710 

1,830

3,200 

2,890 

1,770 

1,840 

2,800

60,783

February

414 

446 

469 

492 

515

469 

503 

515 

558 

597

689 

806 

1,100 

1,160 

1,280

1,180 

1,100 

1,280 

1,310 

1,240

1,360 

1,400 

1,400 

1,450 

1,590

1,450 

1,230 

1,100

27, 103

900 

900 

1,100 

1,350 

1,100

2,300 

1,300 

1,800 

550 

1,500

2,600 

6,900 

17,900 

19, 500 

23,000

18,800 

10, 500 

13, 500 

11, 000 

9,000

7,000 

6,000 

7,500 

6,800 

7,000

7,500 

5,800 

5,600

--

1,010 

1,080 

a 1,400 

1,790 

1,530

2,910 

1,770 

2,500 

829 

2,420

4,840 

15,000 

53, 200 

61,100 

79, 500

59, 900 

31,200 

46,700 

38,900 

30, 100

25, 700 

22,700 

a 28, 000 

26,600 

30, 100

29, 400 

19, 300 

16,600

636,079

December

Mean 

discharge 

(cfs)

435 

457 

457 

446 

446

515 

492 

480 

420 

310

290 

388 

486 

474 

463

404 

348 

378 

373 

378

373 

383 

348 

294 

278

257 

261 

312 

320 

330 

358

11,954

Suspended sediment

Mean 

concentration 

(ppm)

1,550 

1,050 

1,400 

1,250 

1,000

1,050 

1,200 

800 

1,250 

950

500 

3,800 

3,100 

2,400 

2,350

2,000 

1,400 

800 

1,200 

750

1,900 

1,550 

900 

750 

900

600 

1,100 

800 

500 

800 

800

--

Tons 

per 

day

,820 

,300 

,730 

,510 

,200

,460 

,590 

a ,000 

1,420 

795

392 

3,980 

4,070 

3,070 

2,940

2,180 

1,320 

816 

a 1,200 

765

a 1,900 

1,600 

846 

595 

676

416 

a780 

674 

432 

713 

773

43,963

March

948 

1,230 

1,410 

1,310 

1,030

848 

743 

700 

789 

988

1,240 

1,560 

1,340 

1,290 

1,040

885 

860 

935 

,060 

,120

,200 

,330 

,430 

,240 

974

835 

824 

1,000 

1,260 

1,430 

1.650

34,499

6,000 

9,000 

8,800 

6,200 

4,600

4,200 

3,500 

6,800 

5,600 

4,300

5,900 

9,700 

9,500 

7,000 

5,000

3,500 

4,600 

4,600 

4,500 

5,500

6,500 

6,100 

8,400 

5,500 

2,400

2,200 

2,500 

5,000 

3,800 

5,500 

4.700

--

a 15, 000 

a 30, 000 

a 34, 000 

21,900 

12,800

9,620 

7,020 

12,900 

11,900 

11,500

19,800 

40, 900 

34,400 

24, 400 

14,000

8,360 

10, 700 

11, 600 

12,900 

a 17, 000

21, 100 

21,900 

a 32, 000 

18,400 

6,310

4,960 

5,560 

13, 500 

12,900 

21,200 

20. 900

539, 430

e Estimated.

a Computed from estimated concentration graph.
130 COLORADO RIVER BASIN 

SAN JUAN RIVER BASIN Continued 

SAN JUAN RIVER AT SHIPROCK, N. MEX.--Centinued 

Suspended sediment, water year October 1956 to September 1957 Continued

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 .

1. .....

2...... 

3. ..... 

4. ..... 

5......

6. .....

7. .....

8......

g

10. .....

11......

12. .....

13. ..... 

14. ..... 

15. .....

16. .....

17. .....

18

19. ..... 

20. .....

21......

22.

23. '. '. '. . '.

24. ..... 

25......

26. ..... 

27...... 

28...... 

29. ..... 

30. ..... 

31...... 

Total .

April

Mean 

discharge 

(cfs)

1,690 

2,100 

1,540 

1,430 

1,380

1,090 

1,030 

1,160 

1,150 

1,130

1,780 

2,260 

3,180 

3,730 

4,130

4,240 

4,440 

4,920 

5,500 

3,630

2,930 

3,420 

4,470 

3,400 

2 930

2,910 

2,560 

2,370 

2,610 

2,390

81, 500

Suspended sediment

Mean 

concentration 

(ppm)

7,200 

8,800 

5,000 

3,800 

3,700

2,800 

3,000 

3,200 

3,500 

4,000

8,000 

8,600 

13, 300 

11,800 

10, 000

8,000 

9,000 

7,300 

6,400 

4,000

3,400 

4,500 

4,800 

4,000 

3,600

4,300 

3,200 

3,200 

6,500 

4,000

-

Tons 

per 

day

32, 900 

49, 900 

a 21, 000 

14,700 

13,800

8,240 

8,340 

10, 000 

10, 900 

12,200

38,400 

52, 500 

114,000 

119, 000 

112,000

91,600 

108,000 

97,000 

95, 000 

39, 200

26, 900 

41, 600 

57,900 

36,700 

28, 500

33,800 

22, 100 

20, 500 

45,800 

25,800

1,388,280

July

14,400 

13,100 

12,400 

11,100 

10, 500

9,910 

8,830 

7,830 

7,360 

7,750

6,640 

5,970 

5,230 

4,950 

4,560

4,350 

4,130 

5,230 

4,860 

5,860

5,900 

5,040 

4,350 

4,500 

4,820

9,200 

24, 200 

25,900 

15,500 

11,100 

9,460

274,930

1,800 

1,850 

1,900 

1,650 

2,050

1,600 

1,750 

1,500 

1,400 

1,850

1,600 

1,600 

1,400 

1,700 

1,100

1,000 

1,500 

10, 000 

4,250 

4,000

6,300 

2,000 

1,700 

2,200 

2,900

15,000 

26, 000 

9,000 

5,100 

5,200 

3,300

Total discharge for year (cfs-t 

Total load for year (tons). ....

70, 000 

65, 400 

63, 600 

49, 500 

58, 100

42,800 

41,700 

31,700 

27, 800 

38, 700

28,700 

25,800 

19, 800 

22,700 

13, 500

11,700 

16,700 

141,000 

55,800 

63, 300

100, 000 

27, 200 

20, 000 

26,700 

37,700

sa410, 000 

1,700,000 

629, 000 

213,000 

156,000 

84, 300

4,292,200

May

Mean 

discharge 

(cfs)

2,500 

2,680 

3,080 

4,100 

4,950

6,240 

6,780 

8,080 

8,120 

7,540

7,320 

8,190 

6,310 

5,400 

4,760

4,440 

4,210 

3,810 

3,650 

4,300

5,590 

4,350 

4,190 

4,190 

3,940

3,580 

3,450 

4,000 

5,040 

6,820 

8,120

159,730

Suspended sediment

Mean 

concentration 

(ppm)

3,500 

2,600 

4,000 

4,500 

4,500

6,000 

5,000 

7,000 

5,700 

5,500

4,800 

5,000 

4,000 

3,500 

3,000

3,000 

2,400 

2,000 

2,000 

5,500

5,000 

3,500 

2,700 

2,500 

1,900

1,600 

1,600 

1,800 

2,700 

4,000 

3,700

-

Tons 

per 

day

23, 600 

18,800 

33, 300 

49,800 

60,100

101,000 

91,500 

153,000 

125, 000 

112,000

94, 900 

111,000 

68, 100 

51,000 

38,600

36, 000 

27,300 

20, 600 

19,700 

63, 900

75, 500 

41,100 

30, 500 

28, 300 

20, 200

15,500 

14,900 

19,400 

36,700 

73,700 

81,100

1,736,100

August

8,580 

6,820 

6,600 

6,490 

8,730

11,900 

12,500 

9,200 

6,000 

4,950

4,500 

4,190 

4,610 

3,760 

3,780

4,410 

4,960 

3,860 

3,550 

3,420

2,700 

2,410 

2,540 

2,370 

4,040

2,940 

2,540 

2,700 

2,500 

4,050 

8,700

160,300

3,700 

4,800 

5,600 

8,500 

26,700

48, 000 

30, 600 

19, 000 

6,200 

3,600

3,000 

2,400 

10, 300 

15, 200 

9,300

22,000 

27,900 

17,500 

12, 500 

9,600

9,100 

7,700 

3,000 

3,200 

36, 400

32, 500 

9,300 

8,600 

12, 500 

37, 000 

47, 500

-

85,700 

88,400 

99,800 

149, 000 

s 700, 000

sal, 600, 000 

s 1,080,000 

472, 000 

100, 000 

48, 100

36, 400 

27, 200 

128,000 

154,000 

94, 900

262,000 

s 382, 000 

182, 000 

120, 000 

88, 600

66, 300 

50, 100 

20,600 

20, 500 

s 555, 000

268, 000 

63,800 

62,700 

s 99, 200 

420, 000 

si, 160, 000

8, 684, 300

June

Mean 

discharge 

(cfs)

8,830 

9,200 

10,800 

12, 700 

15, 100

19,200 

21,100 

19,100 

17, 200 

16, 800

17,500 

13,600 

10, 600 

10, 600 

11,700

10,900 

9,060 

7,750 

8,580 

11,200

14,100 

16,300 

14,500 

13,500 

14,100

14,800 

15,500 

15,000 

15,900 

15,900

411,120

Suspended sediment

Mean 

concentration 

(ppm)

3,000 

2,900 

3,600 

4,500 

4,500

4,200 

3,100 

3,100 

2,700 

2,500

2,500 

3,200 

2,700 

2,400 

2,450

2,100 

2,000 

1,800 

2,100 

2,900

2,750 

2,850 

2,200 

2,500 

2,900

2,500 

2,500 

1,900 

2,000 

1,900

--

Tons 

per 

day

71, 500 

72, 000 

105, 000 

154, 000 

183, 000

218, 000 

177, 000 

160, 000 

125,000 

113,000

118,000 

118,000 

77, 300 

68, 700 

77, 400

61,800 

48,900 

37,700 

48, 600 

87, 700

105, 000 

125, 000 

86, 100 

91,100 

110, 000

99, 900 

105, 000 

77, 000 

85,900 

81,600

3, 089, 200

September

8,400 

6,000 

4,380 

4,000 

3,200

2,910 

2,650 

2,390 

2,200 

2,000

1,760 

1,520 

1,580 

1,520 

1,380

1,360 

1,130 

1,060 

1,060 

1,060

1,060 

1,070 

1,040 

930

770

815 

737 

787 

721 

880

60, 370

27,500 

14,400 

7,100 

4,200 

3,900

2,500 

2,150 

2,100 

2,100 

2,250

2,050 

1,650 

1,700 

2,500 

1,300

1,600 

1,300 

850 

1,050 

1,050

700 

650 

900 

450 

650

700 

1,050 

600 

350 

550

-

Jays) ............................................................

................................................................ 2

624, 000 

233, 000 

84, 000 

45,400 

33,700

19, 600 

15,400 

13,600 

12,500 

12,200

9,740 

6,770 

7,250 

10, 300 

4,840

5,880 

3,970 

2,430 

3,010 

3,010

2,000 

1,880 

2,530 

1,130 

1,350

1,540 

2,090 

1,270 

a 680 

1,310

1,166,380

1, 260, 680 

1,788,003

s Computed by subdividing day.

a Computed from estimated concentration graph.
SAN JUAN RIVER BASIN Continued 

SAN JUAN RIVER AT SHIPROCK, N. HEX. Continue

Particle-size analyses of suspended sediment, water year October 19

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

____ N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W

Date 

of 

collection

Oct. 23, 1956 ...

Jan. 9, 1957 .... 

Feb. 5... .......

Feb. 5..........

Mar. 9 .........

Sept. 12 ........

Time

10:30 a.m. 

7:00 p.m. 

9:00 a.m. 

5:00 p.m. 

5:00 p.m.

3:25 p.m. 

6:45 a.m. 

3:35 p.m. 

3:35 p.m. 

11:15 a.m. 

11:40 a.m. 

11:00 a.m.

6:25 a.m. 

6:45 a.m. 

6:45 a.m. 

6:00 p.m. 

8:50 a.m.

1:00 p.m. 

6:10 p.m. 

9:50 a.m. 

2:10 p.m.

Discharge 

(cfs)

282 

414 

558 

509 

509

861 

1,700 

1,430 

1,430 

4,560 

5,530 

2,410

6,570 

22, 800 

17,300 

10, 100 

14,800

12, 500 

4,700 

2,560 

1,500

Water 

temperature 

(°F)

48 

32 

37 

40 

40

51 

44 

59 

59 

53 

53 

50

54 

55 

55 

57 

59

68 

66 

73 

68

Suspended 

Concentration 

of sample 

(ppm)

873 

1,570 

1,590 

804 

804

3,300 

10, 300 

4,160 

4,160 

5,630 

6,260 

2,610

6,320 

3,590 

3,020 

1,970 

2,370

2,040 

1,940 

5,700 

5,280

Concentration 

of suspension 

analyzed 

(ppm)

4,090 

1,080 

3,440 

1,300 

1,370

4,750 

4,220 

4,720 

5,090 

3,650 

3,580

3,040 

3, 190 

3,650 

1,780 

2,090

1,720 

2,540 

4,080

Percent f

0.002

13 

2

14 

1

0.004

29 

9 

34 

17 

6

31 

41 

17 

3 

20 

20

15 

31 

17 

15 

16

10 

37

47

0.008

17 

11

21 

14

0.016

43 

11 

52 

19 

17

39 

57 

25 

23 

28 

28

21 

48 

29 

24 

24

17 

49 

59
SAN JUAN RIVER BASIN Continued 

SAN JUAN RIVER AT SHIPROCK, N. HEX. Continue

Particle-size analyses of bed material, water years October 1955 to Se

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, in 

Date of collection

Mar. 9, 1957......

June 10 ...........

Time

9:30 a.m. 

11:30 a.m. 

11:00 a.m. 

12:10 p.m. 

3:25 p.m.

11:00 a.m. 

11:20 a.m. 

9:50 a.m.

Discharge 

(els)

3,730 

6,500 

5,410 

4,390 

861

4,560 

5,530 

17,300

Water 

temperature 

(°F)

59 

59

70 

51

53 

53 

55

Number of 

sampling 

points

3 

4 

4 

3 

11

5 

5 

4

Bed m

Percent finer than indic

0.062

1

1 

1

0.125

9 

2 

2

2

5 

5 

1

0.25

50 

24 

24 

13 

14

41 

33

7

0.50

96 

72 

88 

66 

79

88 

71 

59

1.0

100 

90 

100 

95 

99

100 

90 

99
SAN JUAN RIVER BASIN Continued 

SAN JUAN RIVER NEAR BLUFF, UTAH

LOCATION. At bridge on State Highway 47, 1,800 feet downstream from gaging station and 20 miles sou

DRAINAGE AREA. 23,000 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: February to June 1927, October 1929 to September 1957.

Water temperatures: May 1944 to September 1957.

Sediment records: August to September 1928, July 1929 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 1,500 ppm Oct. 1-10; minimum, 169 ppm June 21-30.

Hardness: Maximum, 588 ppm Oct. 1-10; minimum, 102 ppm July 1-6, 8-10.

Specific conductance: Maximum daily, 2,100 micromhos Oct. 3, 5; minimum daily, 228 micromhos July 

Water temperatures: Maximum, 88°F July 11, minimum, freezing point Dec. 9, 10, 24, 28.

Sediment concentrations: Maximum daily, 55,000 ppm Aug. 7; minimum daily, 260 ppm Oct. 1.

Sediment loads: Maximum daily, 2,490,000 tons Aug. 7; minimum daily, 29 tons Oct. 1. 

EXTREMES, 1929-57. Dissolved solids: Maximum, 1,860 ppm July 21-31, 1934; minimum, 152 ppm June 11

Hardness: Maximum, 874 ppm July 21-31, 1934; minimum, 102 ppm July 1-6, 8-10, 1957.

Specific conductance (1941-57): Maximum daily, 2,310 micromhos Aug. 3, 1956; minimum daily, 208 m

Water temperatures (1944-57): Maximum, 88°F July 11, 1957; minimum, freezing point on many days d

Sediment concentrations: Maximum daily, 309,000 ppm Sept. 21, 1929; minimum daily, 0 ppm July 3-1

Sediment loads: Maximum daily, 12,000,000 tons Oct. 14, 1941; minimum daily, 0 tons July 3-13, 19

REMARKS. Records of specific conductance of daily samples available in district office at Salt Lake 

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-10, 1956.... ..

Oct. 11-20 ..........

Oct. 21-31 ..........

Nov. 1-10...........

Nov. 11-20........ . .

Dec. 1-10...........

Dec. 11-20......... .

Dec. 21-31........ ..

Jan. 14-17 ..........

Mar. 1-10 ..........

Mar. 11-20. .........

Mar. 21-31..........

Mean 

discharge 

(cfs)

83.7 

149 

367 

530 

482 

472

462 

419 

350 

517 

764 

636

483 

1,239 

1,896 

1,148 

1,120 

1,179

Silica 

(SiO,)

15 

13 

14 

12 

12 

15

15 

13 

14 

12 

14 

14

12 

13 

17 

13 

12 

12

Iron 

(Fe)

Calcium 

(Ca)

148 

131 

128 

126 

128 

127

127 

128 

147 

126 

121 

115

127 

107 

93 

109 

96 

83

Magnesium 

(Mg)

53 

42 

32 

29 

33 

34

34 

34 

39 

36 

33 

27

33 

28 

24 

31 

33 

33

Sodium 

(Na)

234 

189 

144 

121 

120 

130

134 

131 

151 

129 

129 

117

121 

108 

87 

94 

79 

69

Potassium 

(K)

6.2 

5.2 

5.2 

5.2 

5.2 

4.5

4.5 

4.5 

5.2 

5.0 

5.4 

4.9

4.3 

5.0 

4.9 

4.6 

4.5 

4.2

Bicarbonate 

(HCO,)

150 

162 

192 

226 

217 

212

210 

208 

232 

193 

216 

186

204 

201 

190 

187 

186 

176

Carbonate 

(CO,)

Sulfate 

(SO.)

821 

 658 

506 

443 

444 

473

485 

485 

565 

491 

482 

428

480 

402 

310 

400 

350 

310

Chloride 

(Cl)

77 

58 

50 

41 

45 

46

44 

44 

53 

46 

36 

38

40 

30 

24 

27 

25 

22

Fluoride 

(F)

Nitrate 

(NO,)

13 

14 

8.3 

7.5 

7.6 

8.9

8.9 

8.9 

9.9 

8.6 

9.7 

8.4

8.1 

8.0 

6.0 

6.6 

5.2 

3.3

B

ro

(B

0
SAN JUAN RIVER BASIN Continued

SAN JUAN RIVER NEAR BLUFF, UTAH Contin

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Apr. 1-13, 1957 .....

Apr. 21-28 ..........

Apr. 29-30, May 1-3. 

May 4-10 ...........

May 11-20. ..........

May 21..............

May 22-31 ..........

July 1-10 ...........

July 11-18 ..........

July 26-28. ..........

July 29-31, Aug. 1-4..

Aug. 7-8 ...........

Aug. 11-17, 20 ......

Aug. 21-26, 29 ......

Sept. 3-10. ..........

Sept. 11-20. .........

Sept. 21-30......... .

Weighted average. . .

Weighted average. . .

Mean 

discharge 

(cfs)

1,551 

4,324 

3,700 

2 832 

6^204 

5,973 

5,020 

4,872

13, 640 

11, 880 

14, 140 

10, 990 

5,661 

5,457 

14, 130 

11,690

8,122 

14,450 

4,224 

4,355 

3,040 

4,870 

3,400 

1,527 

1,093

b3,663

c 3, 587

Silica 

(SiO.)

12 

12 

14 

14 

15 

13 

11 

13

13 

12 

11 

14 

13 

15 

14 

14

14 

14 

16 

19 

16 

17 

13 

15 

12

13

13

Iron 

(Fe)

Calcium 

(Ca)

69 

52 

64 

66 

63 

60 

86 

55

48 

41 

35 

36 

44 

58 

96 

48

65 

104 

65 

85 

78 

123 

65 

77 

90

59

60

Magnesium 

(Mg)

32 

10 

13 

37 

11 

11 

17 

11

5.6 

4.9 

3.9 

2.7 

5. 1 

8.3 

10 

3.6

4.4 

11 

8.0 

6.3 

7.8 

11 

7.8 

15 

20

9.7

9.8

Sodium 

(Na)

54 

25 

35 

56 

29 

28 

36 

30

19 

15 

11 

11 

20 

31 

78 

22

46 

89 

41 

96 

56 

112 

42 

53 

66

37

37

Potassium 

(K)

4.2 

3.1 

5.2 

4. 1 

2.6 

2.2

2.2

2.1 

2.1 

3.1 

1.4 

1.6 

2.2 

4.2 

2.4

3.1 

4.0 

2.6 

3.4 

3.6 

4.8 

2.7 

2.6 

3.0

2.8

2.8

Bicarbonate 

(HCO.)

165 

126 

142 

191 

141 

132 

185 

135

120 

105 

95 

96 

105 

131 

184 

111

160 

206 

146 

224 

179 

216 

137 

142 

158

133

134

Carbonate 

(CO,)

Sulfate 

(S04 )

256 

106 

149 

243 

128 

130 

172 

118

75 

61 

41 

39 

77 

120 

288 

84

138 

316 

150 

253 

178 

391 

159 

214 

282

140

143

Chloride 

(Cl)

18 

7.0 

12 

18 

9.0 

10 

20 

12

9.5 

4.8 

3.5 

4.2 

8.4 

8.0 

9.0 

5.0

7.0 

12 

8.8 

10 

12 

13 

10 

17 

20

10

11

Fluorlde 

(F)

Nitrate 

(NO,)

4.7 

3.7 

3.4 

3 9 

2.8 

2.1 

4.1 

1.4

1.8 

.7 

1.4 

2.2 

1.8 

1.8 

.4 

2.3

1.8 

.2 

1.4 

.3 

2.6 

1.7 

2.2 

2.9 

3.3

2.3

2.4

B

ro

(B

0.

.

.

.

.0

. 

.

a Calculated from determined constituents.

b Represents 97 percent of runoff for water year October 1956 to September 1957.

c Includes estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 1957.
SAN JUAN RIVER BASIN

SAN JUAN RIVER BASIN Continued

SAN JUAN RIVER NEAR BLUFF, UTAH Continued

Temperature (*F) of water, water year October 1956 to September 1957

135

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

Average

Oct.

58

59

59

58

60

59

60

58

55

69

55

54

--

49

55

53

53

49

47

48

49

45

44

44

44

48

48

42

--

53

Nov.

43

39

39

39

39

42

44

46

44

42

42

45

43

43

35

40

--

33

_

34

_.

35

--

__

34

Dec.

_

33

35

34

39

39

34

32

32

35

34

36

36

35

33

33

34

33

34

34

33

32

--

34

34

32

34

33

35

34

Jan.

33

33

33

33

36

34

34

38

39

_

_

_

42

40

38

33

_

._

--

_

34

35

35

37

39

36

35

38

34

~

Feb.

34

34

36

35

37

36

36

37

43

43

44

47

46

47

47

46

46

47

48

48

48

47

47

45

46

48

46

46

_.

_

--

43

Mar.

47

45

_

42

45

45

47

47

50

50

48

50

47

43

42

45

45

46

48

50

52

44

39

37

40

47

47

48

52

55

52

47

Apr.

50

49

51

51

52

51

_

52

57

62

63

..

63

_

61

62

63

56

_

--

_

51

51

58

45

58

_

56

50

--

May

54

55

60

60

65

..

_

63

64

57

55

53

51

53

53

52

54

58

_

51

50

51

51

54

55

..

61

64

64

66

63

57

June

63

63

64

65

68

70

64

64

68

60

56

56

61

62

65

63

55

59

62

67

65

65

65

63

64

65

66

67

70

74

--

64

July

66

66

78

80

79

83

_

75

73

77

88

_

_

84

83

78

_

77

78

78

77

78

73

73

70

70

74

74

75

78

73

76

Aug.

75

73

76

73

71

70

70

70

72

72

72

73

74

74

75

74

75

73

74

72

73

75

74

74

79

71

69

70

68

63

72

Sept.

_

65

66

69

69

66

69

69

67

64

65

64

65

64

63

67

61

62

65

63

61

62

64

65

62

64

70

69

66

65
136 COLORADO RIVER BASIN

SAN JUAN RIVER BASIN Continued

SAN JUAN RIVER NEAR BLUFF, UTAH--Continued

Suspended sediment, water year October 1956 to September 1957

Day

2. .....

5. .....

7. .....

10. .....

16......

17. .....

19. .....

20. .....

24. .....

25. .....

31......

Total.

1. ..... 

2...... 

g

4. ..... 

5......

8......

10......

13. .....

15......

1 ft

19. ..... 

20. .....

21...... 

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

October

Mean 

discharge 

(cfs)

41 

43 

52 

52 

76

92 

108 

113 

129 

131

126 

120 

122 

122 

129

140 

159 

166 

195 

215

241 

244 

235 

244 

266

283 

382 

502 

540 

590 

508

6,366

Suspended sediment

Mean 

concentration 

(ppm)

260 

282 

504 

600 

1,420

1,460 

1,530 

1,520 

1,870 

1,700

1,900 

1,240 

1,400 

1,500 

1,800

1,990 

2,200 

3,040 

3,450 

4,250

4,580 

3,800 

3,350 

3,600 

4,300

4,620 

5,900 

8,000 

8,820 

9,500 

7,800

--

Tons 

per 

day

29 

33 

71 

84 

291

363 

446 

464 

651 

601

646 

402 

a 460 

a 490 

a 630

752 

944 

1,360 

1,820 

2,470

2,980 

2,500 

2,130 

2,370 

3,090

3,530 

6,090 

10, 800 

12,900 

15,100 

a 11, 000

85,497

January

327 

350 

405 

482 

602

502 

497 

562 

643 

796

692 

676 

981 

769 

851

692 

743 

655 

534 

492

492 

476 

447 

492 

471

482 

1,100 

1,080 

568 

540 

540

18,939

1,520 

1,440 

1,750 

2,600 

4,100

5,600 

3,040 

3,250 

4,200 

5,000

4,000 

4,000 

8,800 

10, 700 

7,200

5,280 

5,300 

4,300 

3,100 

2,800

2,700 

2,500 

2,240 

1,980 

2,980

1,990 

10, 200 

20, 000 

5,300 

2,750 

2,120

-

1,340 

1,360 

1,910 

3,380 

6,660

7,590 

4,080 

4,930 

7,290 

a 11, 000

a 7, 500 

a 7, 300 

a23,000 

22,200 

16, 500

9,870 

10, 600 

a 7, 600 

 a 4, 500 

3,700

a3,600 

a3,200 

2,700 

2,630 

3,790

2,590 

30,300 

58,300 

8,130 

4,010 

3,090

284,650

November

Mean 

discharge 

(cfs)

546 

590 

579 

551 

596

540 

502 

466 

466 

461

461 

482 

492 

471 

482

487 

502 

502 

487 

456

466 

432 

346 

492 

540

482 

492 

524 

497 

482

14, 872

Suspended sediment

Mean 

concentration 

(ppm)

6,600 

6,880 

6,500 

5,200 

5,180

5,040 

4,220 

4,300 

4,320 

3,580

3,170 

3,440 

2,920 

2,800 

3,100

3,800 

4,100 

3,700 

3,000 

2,180

2,200 

2,150 

2,300 

3,400 

3,500

3,700 

3,580 

3,600 

3,500 

3,400

--

Tons 

per 

day

9,730 

11,000 

10, 200 

7,740 

8,340

7,350 

5,720 

5,410 

5,440 

4,460

3,950 

4,480 

3,880 

3,560 

4,030

5,000 

a 5, 600 

a 5, 000 

a 3, 940 

2,680

a 2, 800 

2,510 

a 2, 100 

4,520 

a 5, 100

a 4, 800 

4,760 

a 5, 100 

a 4, 700 

a 4, 400

158, 300

February

476 

405 

405 

471 

461

502 

482 

456 

513 

655

590 

711 

803 

1,440 

1,190

1,320 

1,330 

1,600 

1,810 

1,600

1,590 

2,090 

1,820 

3,080 

1,940

1,800 

1,520 

1,330

32,390

1,840 

1,720 

1,500 

1,680 

1,840

1,750 

1,640 

1,500 

1,920 

5,900

7,440 

4,850 

15,320 

77, 400 

23, 000

18, 500 

16, 500 

17, 600 

18, 500 

14, 800

13, 300 

15, 700 

14, 100 

28,200 

13, 700

12,200 

11, 500 

9,200

-

2,360 

1,880 

1,640 

2,140 

2,290

2,370 

2,130 

1,850 

2,660 

10, 400

11, 900 

9,310 

s 13, 300 

s 75, 800 

s76, 100

65, 900 

59, 300 

76, 000 

90, 400 

63, 900

57, 100 

88, 600 

69, 300 

s 243, 000 

71, 800

59, 300 

47, 200 

33, 000

1, 240, 930

December

Meandischarge 

(cfs)

482 

461 

447 

447 

414

442 

428 

492 

508 

502

447 

270 

254 

432 

513

497 

476 

452 

418 

432

437 

423 

392 

400 

338

304 

338 

308 

301 

304 

304

12, 663

Suspended sediment

Mean 

concentration 

(ppm)

3,200 

3,100 

2,500 

2,800 

2,500

2,550 

2,750 

2,540 

2,250 

2,400

1,800 

700 

1,450 

2,740 

3,780

3, 180 

4,620 

2,000 

2,400 

2,200

1,450 

1,200 

1,300 

1,050 

1,200

1,200 

1,400 

750 

900 

1,100 

1,400

-

Tons 

per 

day

a4,200 

a3,900 

3,020 

3,380 

2,790

3,040 

3,180 

3,370 

3,090 

3,250

2,170 

510 

994 

3,200 

5,240

4,270 

5,940 

2,440 

2,710 

2,570

1,710 

1,370 

a 1, 400 

1,130 

a 1, 100

985 

1,280 

624 

731 

903 

1,150

75, 647

March

1,120 

1,220 

1,540 

1,640 

1,410

1,250 

922 

830 

764 

776

966 

1,270 

1,470 

1,280 

1,320

1,080 

922 

908 

1,000 

989

1,250 

1,240 

1,320 

1,480 

1,220

944 

796 

844 

1,090 

1,250 

1.530

35,646

8,000 

7,000 

8,400 

8,300 

7,300

6,200 

5,500 

3,800 

3,300 

3,800

5,600 

6,800 

8,400 

7,600 

7,900

5,700 

4, 100 

3,800 

4,500 

4,200

3,800 

5,200 

6,100 

6,500 

5,200

4,900 

6,800 

3,700 

3,800 

6,900 

10.000

24, 200 

23, 100 

35, 000 

36, 800 

27, 800

20, 900 

13, 700 

8,520 

6,850 

7,960

14, 600 

23, 300 

33,300 

26,300 

28,200

16, 600 

10, 200 

9,320 

12, 200 

11,200

12, 800 

17, 400 

21, 700 

26, 000 

17, 100

12, 500 

14, 600 

8,430 

11, 200 

23, 300 

41, 300

596, 380

s Computed by subdividing day.

a Computed from estimated concentration graph.
SAN JUAN RIVER BASIN

SAN JUAN RIVER BASIN--Continued

SAN JUAN RIVER NEAR BLUFF, UTAH Continued

137

Suspended sediment, water year October 1956 to September 1957--Continued

Day

1......

3. .....

6. .....

8. .....

9. ..... 

10. .....

13. .....

14. .....

16. .....

18. .....

19. ..... 

20. .....

24. ..... 

25. .....

26......

27...... 

28. .....

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

ft.....

10......

13...... 

14. ..... 

15......

16. .....

18. ..... 

19. ..... 

20. .....

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

April

Mean 

discharge 

(cfs)

1,640 

1,790 

2,080 

1,920 

1,590

1,350 

1,150 

1,070 

1,200 

1,150

1,080 

1,740 

2,400 

3,250 

3,780

4,030 

4,310 

4,800 

5,140 

4,960

3,650 

3,600 

4,640 

4,980 

3,710

3,270 

3,130 

2,620 

2,790 

3,430

86, 250

Suspended sediment

Mean 

concentration 

(ppm)

7,800 

7,500 

8,700 

6,200 

15, 200

6,800 

6,800 

6,900 

4,800 

3,400

3,300 

9,100 

13, 100 

15, 000 

17, 200

15, 200 

12, 300 

11, 300 

11,000 

7,500

3,300 

3,600 

6,500 

7,900 

7,800

9,500 

10, 800 

8,000 

6,400 

21, 800

-

Tons 

per 

day

34, 500 

36, 200 

48, 900 

32,100 

65,300

24, 800 

21, 100 

a 20, 000 

15, 600 

10,600

9,620 

sa44, 000 

84, 900 

a 130, 000 

176, 000

165, 000 

143, 000 

146, 000 

a 150, 000 

a 100, 000

a 33, 000 

35,000 

81,400 

106, 000 

78, 100

83, 900 

91, 300 

a 57, 000 

48, 200 

s 206, 000

2,277,520

July

15,200 

13,800 

12,700 

12,200 

11,100

10,600 

9,880 

8,580 

8,010 

7,820

7,750 

6,970 

6,140 

5,450 

5,030

4,720 

4,440 

4,790 

5,610 

5,410

6,430 

5,990 

5,180 

4,640 

4,940

5,680 

12,800 

23, 900 

26, 000 

12,000 

11,800

285, 560

4,340 

3,900 

3,350 

3,540 

3,540

2,900 

3,200 

4,080 

4,000 

3,140

3,080 

2,900 

2,500 

2,020 

1,450

1,400 

2,300 

6,000 

11,000 

11,600

11, 500 

5,600 

3,000 

2,250 

3,600

6,000 

22,000 

27,200 

8,200 

6,750 

6,500

--

Total discharge for year (cfsTotal load for year (tons). . . .

178, 000 

145, 000 

115,000 

117,000 

106, 000

83,000 

a 85, 000 

94, 500 

86, 500 

66, 300

64, 400 

a 55, 000 

a 41, 000 

29, 700 

19,700

17, 800 

a 28, 000 

77,600 

167, 000 

169, 000

200, 000 

90, 600 

42, 000 

28,200 

48,000

a 92, 000 

s 853, 000 

1,760,000 

576,000 

219,000 

207. 000

5,861,300

May

Mean 

discharge 

(cfs)

2,840 

2,530 

2,570 

3,210 

4,250

5,220 

6,390 

7,510 

8,690 

8,160

7,990 

8,470 

8,470 

6,550 

5,640

5,160 

4,790 

4,350 

4,040 

4,270

5,020 

5,860 

5,090 

5,020 

4,790

4,160 

3,620 

3,600 

4,100 

5,300 

7,180

164, 840

Suspended sediment

Mean 

concentration 

(ppm)

14, 500 

8,200 

6,800 

6,100 

7,500

8,800 

12,000 

13, 300 

11, 100 

6,000

8,300 

10, 800 

7,900 

6,400 

5,300

6,500 

6,800 

4,200 

4,800 

10, 000

11,000 

9,800 

6,500 

3,800 

4,800

3,800 

2,900 

3,100 

4,100 

6,500 

6,400

-

Tons 

per 

day

111, 000 

56,000 

47, 200 

52, 900 

a 86, 000

124, 000 

a 210, 000 

270, 000 

260, 000 

132, 000

179, 000 

247,000 

181, 000 

113,000 

80, 700

90, 600 

87,900 

49, 300 

a 52, 000 

115,000

149, 000 

155, 000 

89,300 

51, 500 

62,100

a 43, 000 

28,300 

30, 100 

45, 400 

93,000 

124, 000

3,415,300

August

9,980 

8,680 

6,600 

6,770 

6,580

12, 200 

15, 600 

13, 300 

7,880 

5,830

4,970 

4,440 

4,090 

4,670 

3,720

3,600 

4,720 

4,860 

3,850 

3,580

3,410 

3,090 

2,710 

2,490 

2,320

4,610 

3,050 

2,770 

2,650 

8,790 

11. 500

183,310

4,250 

4,600 

3,500 

7,500 

8,500

28, 000 

55, 000 

37,500 

20,300 

11,300

5,200 

3,200 

2,800 

10, 800 

12, 900

12, 600 

16,200 

40, 200 

31, 500 

11,000

14, 500 

18, 400 

11,300 

5,800 

8,700

24,600 

37,000 

27, 200 

15, 300 

42,300 

53, 000

-

115,000 

108, 000 

62,400 

137, 000 

151,000

922,000 

s2, 490, 000 

1, 400, 000 

432, 000 

178, 000

69, 800 

38, 400 

30, 900 

s 134, 000 

130, 000

122,000 

206,000 

s 575, 000 

327, 000 

106, 000

134, 000 

154, 000 

82,700 

39,000 

54,500

s 346, 000 

316,000 

203,000 

109,000 

si, 140, 000 

al, 700, 000

12,012,700

June

Mean 

discharge 

(cfs)

8,120 

8,540 

9,230 

11,200 

13,300

15, 700 

17, 500 

18, 800 

17, 600 

16, 400

16, 900 

17,500 

14,100 

11,200 

11,700

12,000 

10, 500 

8,430 

7,660 

8,790

11,100 

14, 000 

15, 300 

13, 700 

13, 200

14, 100 

14,800 

15, 200 

14, 800 

15, 200

396, 570

Suspended sediment

Mean 

concentration 

(ppm)

9,700 

10, 300 

7,800 

5,500 

6,800

8,200 

9,400 

6,400 

4,600 

4,700

7,300 

5,500 

4,700 

4,800 

7,700

5,000 

3,020 

3, 180 

3,020 

3,200

4,300 

5,000 

5,000 

4,140 

3,750

4,600 

3,760 

4,600 

4,400 

3,920

--

Tons 

per 

day

213,000 

237,000 

194, 000 

166, 000 

244, 000

348, 000 

444,000 

325,000 

219,000 

208, 000

333,000 

260, 000 

179, 000 

145,000 

243, 000

162,000 

85, 600 

72, 400 

62, 500 

75,900

129, 000 

189, 000 

207, 000 

153,000 

134,000

175, 000 

150, 000 

189, 000 

176,000 

161,000

5, 879, 400

September

10, 400 

7,970 

5,480 

4,410 

3,690

3,260 

2,950 

2,700 

2,390 

2,320

1,950 

1,880 

1,660 

1,640 

1,560

1,510 

1,390 

1,350 

1,200 

1,130

1,170 

1,180 

1,120 

1,140 

1,130

1,090 

981 

1,080 

1,040 

997

71,768

47, 000 

33, 000 

19,200 

8,750 

5,680

4,230 

3,920 

2,880 

11,000 

8,800

2,150 

2,400 

2,300 

1,780 

1,790

2,100 

2,550 

2,670 

2,800 

1,540

1,300 

1,580 

1,830 

1,380 

1,060

2,080 

1,600 

1,830 

920 

770

--

a 1,400, 000 

a 740, 000 

284, 000 

104,000 

56,600

37,200 

31,200 

21,000 

71,000 

55,100

11,300 

12,200 

10,300 

7,880 

7,540

8,560 

9,570 

9,730 

9,070 

4,700

4,110 

5,030 

5,530 

4,250 

3,230

6,120 

4,240 

5,340 

2,580 

2,070

2,933,450

days). ............................................................... 1, 309, 174

................................................................... .34, 821, 074

s Computed by subdividing day.

a Computed from estimated concentration graph.
SAN JUAN RIVER BASIN Continued

SAN JUAN RIVER NEAR BLUFF, UTAH Continued

Particle-size analyses, water year October 1956 to September 1

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, In native water; P, plpet; S, sieve; V, visual accumulation tube; W, In d

Date 

of 

collection

Oct. 8, 1956.....

Jan. 5, 1957.....

Feb. 22 .........

Mar. 17 .........

May 11 ..........

July 3 ...........

July 30 ..........

Sept. 11.........

Time

9:00 a.m. 

9:05 a.m. 

10:15 a.m. 

12:20 p.m. 

9:15 a.m. 

9:00 a. m. 

5:50 p.m.

10:50 a. m. 

8:25 a.m. 

6:50 a.m. 

6:45 a.m. 

6:40 a.m. 

4:00 p. m. 

5:50 p. m.

1:10 p.m. 

6:50 p.m. 

9:45 a.m. 

9:10 a.m. 

7:50 a.m. 

9:00 a. m. 

9:00 a. m. 

6:05 p.m. 

7:50 a.m.

Discharge 

(cfs)

108 

631 

471 

534 

418 

1,550 

2,620

929 

7,620 

11,200 

8,850 

12, 400 

4,450 

14, 800

12, 900 

13, 600 

7,880 

4, 170 

4,740 

3,290 

3,290 

3,300 

2,050

Water 

temperature 

(°F)

58 

39 

43 

36 

37 

48 

51

45 

55 

65 

59 

78 

79 

78

73 

75 

72 

74 

75 

75 

75 

75 

64

Suspended sedim

Concentration 

at sample 

(ppm)

1,420 

5,360 

2,760 

2,390 

1,290 

13, 400 

20, 400

4,080 

7,980 

6,370 

2,830 

4,010 

1,040 

6,590

26, 000 

41, 700 

22, 600 

3,080 

6,550 

19, 800 

19, 800 

33, 800 

2,090

Concentration 

at suspension 

analyzed 

(ppm)

3,320 

2,980 

3,900 

3,520 

3,790 

3,310 

5,080

3,660 

4,120 

3,280 

3,470 

3,170 

3,480 

4,970

3,290 

5,110 

3,500 

5,060 

5,070 

5,500 

5,370 

4,070 

5,370

Percent finer t

0.002 0.004

19 

19 

17 

19 

20 

52 

29

44 

19 

18 

15 

8 

13 

35

50 

52 

60 

34 

41 

70 

2 

50 

22

0.008 0.016

24 

27 

26 

32 

29 

70 

43

55 

26 

29 

23 

13 

19 

49

78 

69 

74 

41 

53 

85 

86 

66 

28

0.0
COLORADO RIVER MAIN STEM 

COLORADO RIVER AT LEES FERRY, ARIZ.

LOCATION. At gaging station at head of Marble Gorge at Lees Ferry, Coconino County, just upstre

Glen Canyon Dam, 28 miles downstream from Utah-Arizona State line, 61.5 miles upstream from L

San Juan River.

DRAINAGE AREA. 107,900 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: January to July 1926, October 1926 to June 1927, October 

October 1947 to September 1957.

Water temperatures: July 1949 to September 1957.

Sediment records: October 1928 to December 1933, November 1942 to September 1944, October 194

EXTREMES, 1956-57. Dissolved solids: Maximum, 1,280 ppm Oct. 1-31; minimum, 271 ppm June 10-30

Hardness: Maximum, 640 ppm Oct. 1-31; minimum, 178 ppm June 10-30.

Specific conductance: Maximum daily, 2,050 micromhos Nov. 3; minimum daily, 351 micromhos Jul

Water temperatures: Maximum, 78°F Aug. 14, 19; minimum, 33°F Dec. 27.

Sediment concentrations: Maximum daily, 27,500 ppm Sept. 2; minimum daily, 265 ppm Oct. 2. 

Sediment loads: Maximum daily, 3,000,000 tons Sept. 1; minimum daily, 1.870 tons Oct 2 

EXTREMES, 1928-33, 1942-45, 1947-57. Dissolved solids (1928-30, 1942-45, 1947-57): Maximum, 1,

June 11 20j 1929.

Hardness (1928-30, 1942-45, 1947-57): Maximum, 720 ppm Oct. 11-20, 1928; minimum, 132 ppm Jun

Specific conductance (1942-45, 1947-57): Maximum daily, 2,280 micromhos Oct. 15, 1945; minimu

Water temperatures (1949-57): Maximum, 84°F Aug. 3, 1952, minimum, freezing point many days d

REMARKS.

1956 to September 1957 given in WSP 1513. Flow affected by ice Dec. 20~to Jan^ 1.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 1-31, 1956..

Nov. 14-30 .....

Jan. 1-12, 1957..

Feb. 19-28......

Mean 

discharge 

(cfs)

3,034 

5,265 

4,876 

4,015

4,062 

4,981 

4,992 

4,464 

6,480 

6,870 

7,425

Silica 

(Si02)

11 

11 

15 

14

16 

15 

14 

14 

12 

16 

12

Iron 

(Fe)

0.02 

.01 

.00 

.01

.01 

.00 

.01 

.00 

.01

.02

Calcium 

(Ca)

146 

155 

131 

135

134 

124 

113 

118 

118 

123 

109

Magnesium 

(Mg)

67 

57 

52 

54

56 

47 

44 

48 

45 

48 

40

Sodium 

(Na)

180 

177 

150 

169

172 

156 

139 

160 

157 

181 

138

Potassium 

(K)

6.8 

6.8 

5.8 

6.6

6.7 

6.3 

5.5 

6.1 

6.3 

6.7 

6.4

Bicarbonate 

(HCO,)

200 

225 

231 

244

254 

234 

217 

219 

223 

221 

208

Sulfate 

(SOJ

619 

601 

477 

500

494 

434 

415 

433 

421 

437 

395

Chloride 

(Cl)

146 

136 

117 

136

146 

136 

105 

142 

138 

187 

104

Fluoride 

(F)

0.5 

.5 

.4 

.4

.4 

.4 

.4 

.4 

.3

.4

Nitrate 

(N03 )

7.1 

8.4 

7.2 

9.2

11 

9.8 

8.5 

9.2 

6.2 

7.1 

9.6

Bo

ron 

(B)

0.1

.2

.1

.2

.1

.1

.1

.1

.2

.1
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER AT LEES FERRY, ARIZ . Conti

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Mar. 1-31, 1957..

Apr. 21 -May 5 ...

May 20 -June 2 ....

Sept. 1-30 .......

Weighted average

Mean 

discharge 

(eta)

8,108 

10,080 

20,710 

39, 520 

55,410 

43,450

85,440 

102,100 

77, 500 

48,410 

36,270

25,240 

19,300 

17,780 

13,820

23,930

Silica 

(SiO.)

20 

17 

17 

16 

16 

16

16 

14 

15 

18 

8.4

9.2 

19 

10 

13

15

Iron 

(Fe)

0.01 

.00 

.00 

.02 

.04 

.00

.03 

.04 

.50 

.00 

.00

.06 

.01 

.00 

.00

0.10

Calcium 

(Ca)

107 

98 

84 

83 

66 

72

59 

55 

56 

65 

76

106 

127 

152 

125

76

Magnesium 

(Mg)

36 

33 

22 

19 

14 

17

13 

10 

15 

20 

13

23 

49 

33 

30

20

Sodium 

(Na)

138 

121 

62 

46 

32 

42

27 

21 

21 

38 

37

56 

K 

87 

82

50

Potassium 

(K)

5.7 

5.4 

4.6 

4.5 

3. 6 

3.8

3.3 

2.9 

2.7 

3.4 

2.9

4.7 

2 

6.5 

5.3

3.8

Bicarbonate 

(HCO,)

220 

210 

218 

223 

188 

194

177 

162 

180 

268 

200

236 

a 194 

250 

238

198

Sulfate 

(SO,)

384 

331 

183 

149 

104 

149

87 

72 

72 

77 

122

221 

428 

425 

314

159

Chloride 

(Cl)

97 

90 

42 

32 

18 

20

16 

13 

14 

17 

22

40 

138 

50 

65

34

Fluoride 

(F)

0.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.3 

.4 

.4

.3

.4 

.6

0.4

Nitrate 

(NOS)

8.0 

6.6 

6.3 

5.9 

4.4 

3.8

3.2 

2.1 

5.6 

7.5 

7.5

7.3 

6.6 

8.5 

8.0

5.2

Boron 

(B)

0.18 

.21 

.12 

.11 

.14 

.14

.13 

.10 

.15 

.11 

.13

.13 

.13 

.11 

.15

0.13

a Includes equivalent of 10 parts per million of carbonate (CO,).
COLORADO RIVER MAIN STEM 141

COLORADO RIVER MAIN STEM--Continued 

COLORADO RIVER AT LEES FERRY, ARIZ. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement, generally between 8 a. m. and 6 p. m.7

Day

1

2

3

4

5

6

7

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Average

Oct.

66

68

68

"

69

66

64

65

64

68

63

58

60

58

59

59

58

--

59

58

59

53

52

53

54

53

51

49

60

Nov.

47

46

45

42

--

47

46

47

48

47

46

47

48

44

43

42

41

38

39

36

37

38

39

38

38

36

36

--

42

Dec.

37

37

37

--

42

41

38

36

34

34

34

37

37

36

35

35

36

--

35

34

35

34

34

33

34

35

34

34

36

Jan.

35

36

39

38

39

40

37

38

39

41

42

42

42

36

36

35

36

37

37

38

39

39

36

36

34

38

Feb.

35

35

34

35

35

36

37

39

43

42

46

47

47

47

48

48

51

50

50

50

50

53

49

49

50

49

50

52

--

45

Mar.

49

50

49

52

49

51

54

55

54

54

53

50

51

49

52

49

51

50

55

50

42

48

50

53

56

55

56

56

58

52

Apr.

53'

52

54

a 48

58

53

57

58

61

62

61

59

63

63

60

65

58

55

56

64

56

55

55

52

56

55

57

59

57

May

59

61

60

64

65

._

63

63

62

59

58

58

61

58

57

69

61

58

58

56

57

57

57

62

59

62

64

67

69

61

June

67

68

68

68

68

70

70

a 66

67

65

69

64

64

64

66

62

62

63

62

63

67

66

67

68

67

68

68

69

70

70

--

67

July

70

70

69

70

--

71

71

71

72

72

75

74

72

73

73

73

74

75

73

73

73

73

73

72

73

74

76

76

76

73

Aug.

77

77

76

76

75

74

75

76

76

74

75

78

77

_

77

76

78

77

76

77

77

74

74

74

72

70

70

75

Sept.

69

66

69

--

69

71

72

72

71

70

70

70

70

67

70

67

66

66

65

67

65

65

68

68

66

67

68

68

--

68

a Measurement obtained before 8 a. m.
COLORADO RIVER BASIN

COLORADO RIVER MAIN STEM Continued

COLORADO RIVER AT LEES FERRY, ARIZ.--Continued

Suspended sediment, water year October 1956 to September 1957

Day

1. .....

2. .....

3. .....

4. .....

5. .....

6. .....

7. .....

9. .....

10. .....

11......

12. .....

14. .....

15. ..... 

16. .....

17. .....

18. .....

20. .....

21......

22. .....

24. ..... 

25. .....

27. .....

28. .....

30. ..... 

31. .....

Total.

I...... 

2...... 

3...... 

4...... 

5......

8...... 

9. ..... 

10. .....

13. ..... 

14. ..... 

15......

16. .....

18. ..... 

19......

20. .....

21...... 

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

October

Mean 

discharge 

(cfs)

2,610 

2,620 

2,610 

2,620 

2,640

2,670 

2,700 

2,730 

2,780 

2,800

2,870 

2,900 

2,870 

2,900 

2,960

2,920 

2,940 

2,970 

2,990 

3,010

3,090 

3,140 

3,220 

3,320 

3,320

3,240 

3,220 

3,240 

'3,590 

3,970 

4,580

94,040

Suspended sediment

Mean 

concentration 

(ppm)

281 

265 

300 

300 

300

296 

343 

383 

371 

373

433 

409 

378 

365 

420

412 

396 

401 

400 

380

379 

490 

640 

750 

760

660 

610 

600 

790 

1,700 

2,500

-

Tons 

per 

day

1,980 

1,870 

2,110 

a2,100 

a2,100

2,130 

2,500 

2,820 

2,780 

2,820

3,360 

3,200 

2,930 

2,860 

3,360

3,250 

3,140 

3,220 

a3,200 

a3,100

3,160 

4,150 

5,560 

6,720 

6,810

5,770 

5,300 

5,250 

7,660 

a 18, 000 

30,900

154,110

January

3,300 

3,300 

3,300 

3,380 

3,590

4,080 

4,200 

4,520 

4,520 

4,650'

4,900 

5,010 

5,030 

5,140 

5,330

5,360 

5,140 

5,090 

5,280 

5,530

5,500 

5,090 

4,620 

4,380 

4,200

4,040 

4,400 

4,700 

5,200 

5,700 

4,960

143,440

510 

620 

560 

590 

720

860 

910 

1,500 

1,350 

1,140

1,400 

1,330 

1,590 

3,650 

2,800

2,090 

1,900 

1,700 

1,600 

1,630

1,610 

1,220 

910 

950 

970

850 

1,030 

1,200 

1,320 

2,150 

2,110

--

4,540 

5,520 

4,990 

a 5, 400 

a7,000

9,470 

10,300 

18,300 

16,500 

14,300

18, 500 

18,000 

21,600 

50,700 

40,300

30,200 

a 26, 000 

a 23, 000 

22,800 

24,300

23,900 

16,800 

11,400 

11,200 

11,000

9,270 

12,200 

a 15, 000 

18, 500 

33,100 

28,300

562,390

November

Mean 

discharge 

(cfs)

4,750 

5,300 

4,900 

4,620 

4,750

5,030 

5,110 

5,280 

5,640 

5,820

5,790 

5,760 

5,700 

5,530 

5,330

5,030 

5,010 

5,110 

5,300 

5,410

5,330 

5,200 

4,900 

4,780 

4,830

4,680 

4,320 

4,160 

3,970 

4,010

151,350

Suspended sediment

Mean 

concentration 

(ppm)

2,930 

3,800 

8,700 

4,900 

3,500

2,700 

2,200 

2,050 

2,830 

2,780

2,200 

1,960 

1,900 

1,600 

1,440

1,410 

1,200 

1,400 

1,540 

1,480

1,450 

1,400 

1,300 

1,060 

1,040

840 

680 

730 

820 

830

-

Tons 

per 

day

37,600 

54,400 

115,000 

61,100 

a45,000

36,700 

30,400 

29,200 

43,100 

43,700

34,400 

30, 500 

29, 200 

23,900 

20,700

19,100 

16,200 

19,300 

22,000 

21,600

20, 900 

a 20, 000 

a 17, 000 

13,700 

13,600

10,600 

7,930 

8,200 

8,790 

8,990

862,810

February

4,780 

4,800 

4,550 

4,400 

4,300

4,500 

4,520 

4,380 

4,300 

4,380

4,400 

4,300 

4,300 

4,580 

5,530

6,700 

7,210 

6,870 

6,740 

6,640

7,040 

7,040 

6,900 

7,450 

7,690

8,500 

8,250 

8,000

163,050

1,660 

1,350 

1,050 

930 

870

990 

960 

900 

890 

1,360

1,110 

1,770 

2,040 

1,570 

2,200

2,960 

2,930 

2,700 

3,900 

4,030

4,900 

5,400 

4,480 

3,820 

4,970

5,270 

5,800 

4,700

--

21,400 

17,500 

12,900 

11,000 

10,100

12,000 

11,700 

10, 600 

10,300 

16,100

13,200 

20, 500 

23,700 

19,400 

32,800

53,500 

57,000 

50,100 

71,000 

72,200

93,100 

103,000 

83,500 

76, 800 

103,000

121,000 

129,000 

102,000

1,358,400

December

Mean 

discharge 

(cfs)

4,300 

4,420 

4,380 

4,280 

4,200

4,080 

4,080 

4,180 

4,400 

4,480

4,600 

4,700 

4,620 

4,280 

3,440

3,140 

3,420 

3,810 

4,010 

4,500

4,380 

4,250 

4,110 

4,010 

3,810

3,500 

3,420 

3,500 

3,400 

3,380 

3,400

124,480

Suspended sediment

Mean 

concentration 

(ppm)

1,020 

1,000 

880 

910 

960

1,000 

960 

1,020 

1,070 

1,000

1,000 

1,110 

1,130 

870 

620

530 

670 

880 

1,100 

1,000

880 

790 

730 

660 

530

500 

440 

480 

480 

450 

460

-

Tons 

per 

day

11,800 

11,900 

10,400 

all, 000 

a 11, 000

11,000 

10,600 

11,500 

12,700 

12,100

12,400 

14, 100 

14, 100 

10, 100 

5,760

4,490 

a 6, 200 

9,050 

11,900 

a!2,000

a 10, 000 

9,070 

8,100 

7,150 

5,450

4,720 

4,060 

4,540 

4,410 

4,110 

4,220

279, 930

March

7,830 

7,550 

7,450 

7,660 

8,140

8,110 

8,720 

9,080 

9,010 

8,860

8,250 

7,860 

8,080 

9,010 

9,910

9,870 

9,530 

8,970 

8,470 

8,110

7,580 

7,550 

7,720 

7,580 

7,280

7,310 

7,280 

7,350 

7,480 

7,040 

6.700

251,340

3,710 

3,550 

3,310 

3,500 

3,400

3,270 

3,260 

3,050 

2,750 

2,850

2,280 

2,070 

2,190 

2,850 

3,910

3,670 

3,250 

3,130 

2,840 

2,730

2,680 

2,700 

2,700 

2,650 

2,560

2,340 

2,550 

2,360 

2,050 

1,940 

1.670

78,400 

72,400 

66,600 

72,400 

a75,000

71,600 

76,800 

74,800 

66,900 

68,200

50, 800 

43,900 

47,800 

69,300 

105,000

97,800 

83,600 

75,800 

64,900 

59, 800

54,800 

a 55, 000 

56,300 

54,200 

30,300

46,200 

30,100 

46,800 

41,400 

36,900 

30.200

1,944,000

a Computed from estimated concentration graph.
COLORADO RIVER MAIN STEM 

COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER AT LEES FERRY, ARIZ. Continued 

Suspended sediment, water year October 1956 to September 1957--Continued

143

Day

1......

2. .....

5. .....

6. .....

7. .....

9. .....

10. .....

11......

14. .....

16. .....

18. .....

20. .....

24. .....

25. ..... 

26......

27. .....

30. .....

31...... 

Total.

2...... 

3......

4...... 

5......

6. .....

&.....

10. .....

13...... 

14. ..... 

15. .....

18. ..... 

19. .....

91

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

April

Mean 

discharge 

(cfs)

6,940 

7,380 

7,830 

8,320 

8,540

8,290 

8,290 

9,190 

9,160 

8,650

8,750 

8,790 

8,720 

8,930 

9,270

10,300 

12,500 

14,700 

17,200 

19,900

23,300 

22,200 

21,600 

22,200 

24,000

24,300 

21,900 

19,600 

18,400 

18,100

417,250

Suspended sediment

Mean 

concentration 

(ppm)

1,900 

2,090 

2,230 

2,190 

2,400

2,690 

2,400 

2,430 

2,330 

1,910

1,900 

2,000 

2,710 

3,120 

2,450

2,800 

3,280 

5,200 

7,800 

8,300

7,500 

7,000 

6,100 

5,700 

5,250

5,200 

4,600 

4,250 

3,800 

3,700

--

Tons 

per 

day

35,600 

41,600 

47,100 

49,200 

a 55, 000

60, 200 

53,700 

60,300 

57, 600 

44,600

44,900 

47,500 

63,800 

75,200 

61,300

77,900 

111,000 

206,000 

a360,000 

446,000

472,000 

420,000 

356,000 

342,000 

340,000

341,000 

272,000 

225,000 

189,000 

181,000

5,136,500

July

97, 800 

99,800 

99,800 

97,800 

95,800

91,800 

89, 700 

85,500 

79, 200 

76,000

74,000 

70, 700 

66,300 

60,800 

56,400

53,300 

51,200 

49,100 

48,600 

50, 200

50, 200 

52,200 

49, 100 

44,500 

41,100

40,200 

40,200 

44,500 

55,400 

61,900 

51,200

,024,300

3,200 

3,200 

3,800 

3,000 

2,900

3,400 

2,700 

2,600 

2,500 

2,700

3,800 

3,300 

3,600 

3,200 

2,800

2,700 

2,400 

2,300 

2,600 

6,200

6,300 

7,000 

5,500 

4,500 

3,700

3,750 

3,000 

3,900 

12,100 

8,500 

5,300

Total discharge for year (cfs 

Total load for year (tons) . . .

845,000 

862,000 

1,020,000 

792, 000 

a750,000

843,000 

654,000 

600,000 

535,000 

554,000

759,000 

630,000 

644,000 

525, 000 

426, 000

389, 000 

332,000 

a300,000 

a340,000 

840,000

854, 000 

987,000 

729,000 

541,000 

411,000

407,000 

326,000 

469, 000 

1,810,000 

1, 420, 000 

733, 000

21,327,000

May

Mean 

discharge 

(cfs)

19,900 

19,300 

18,100 

17, 500 

20,300

26, 500 

32,700 

39,700 

46, 500 

52,200

55, 400 

61,900 

59,700 

61,900 

59, 700

55,400 

51,200 

47,000 

46, 500 

44,500

40,600 

41,100 

45, 500 

45, 500 

44,000

43,500 

42, 500 

39,700 

37,000 

37,900 

42,000

1,295,200

Suspended sediment

Mean 

concentration 

(ppm)

3,400 

3,750 

4,600 

4,800 

4,900

5,200 

5,400 

7,100 

8,500 

9,000

7,250 

7,900 

7,000 

6,700 

6,300

6,800 

6,700 

6,300 

5,900 

5,200

5,250 

5,600 

5,000 

6,400 

6,400

5,000 

5,400 

4,800 

6,000 

4,800 

4,100

-

Tons 

per 

day

183,000 

195,000 

225, 000 

227, 000 

269, 000

a 370, 000 

477,000 

761,000 

1,070,000 

1,270,000

1,080,000 

1,320,000 

1,130,000 

1,120,000 

1,020,000

1,020,000 

926, 000 

799,000 

741,000 

a 620, 000

576,000 

621,000 

614,000 

786,000 

760, 000

587,000 

620,000 

515,000 

599, 000 

491,000 

465,000

21,457000

August

44, 500 

41,100 

37,400 

33,500 

31,100

31,900 

34,400 

45,500 

37,900 

38, 800

31,500 

27,600 

24,700 

22,900 

21,900

20,600 

19,900 

19,300 

19,600 

18,400

18,400 

17,200 

22,600 

22,200 

19,300

15,800 

15,800 

16,600 

15,000 

17, 500 

26.000

808,900

4,000 

3,000 

2,300 

2,200 

2,300

4,900 

7,800 

18,000 

18,100 

16,700

10,600 

10,000 

9,500 

6,000 

6,000

5,600 

4,900 

5,200 

5,100 

7,200

6,000 

5,500 

6,000 

9,000 

23,200

13,500 

8,800 

17, 500 

16,200 

13,000 

17 r 300

a 480, 000 

a 330, 000 

232,000 

199,000 

193,000

422,000 

724,000 

2,210,000 

1,850,000 

1,750,000

902,000 

745,000 

634,000 

371,000 

355,000

a 310, 000 

263,000 

271,000 

270,000 

358,000

298, 000 

a260, 000 

a370,000 

539,000 

1,210,000

576,000 

375,000 

784, 000 

656, 000 

614, 000 

si, 250, 000

19,801,000

June

Mean 

discharge 

(cfs)

49, 100 

55,400 

60, 800 

65,200 

72,900

83,400 

95,800 

107,000 

113,000 

118,000

121,000 

124,000 

123,000 

114,000 

106,000

106,000 

108,000 

108,000 

102,000 

93,800

90,800 

91,800 

95, 800 

97, 800 

90,800

85, 500 

87, 600 

90,800 

93,800 

94,800

2,845,900

Suspended sediment

Mean 

concentration 

(ppm)

5,300 

4,000 

5,200 

4,900 

5,300

5,500 

5,300 

6,700 

6,300 

5,100

4,800 

6,400 

5,400 

5,000 

4,300

3,800 

3,600 

3,600 

4,000 

4,250

3,900 

3,300 

3,700 

3,900 

4,000

3,300 

3,250 

3,000 

3,000 

3,100

--

Tons 

per 

day

703,000 

598,000 

854,000 

863,000 

1,040,000

1,240,000 

1,370,000 

1,940,000 

1,920,000 

1,620,000

1,570,000 

2,140,000 

1,790,000 

1,540,000 

1,230,000

1,090,000 

1,050,000 

1,050,000 

1,100,000 

1,080,000

956,000 

818,000 

957,000 

1,030,000 

981,000

762,000 

769,000 

735,000 

760,000 

793,000

34,349,000

September

42, 000 

40, 200 

30, 300 

26, 200 

22,200

19,300 

17,200 

15,800 

14,700 

13,900

12,900 

12,000 

11,300 

10, 700 

9,950

9,270 

8,610 

8,250 

8,000 

7,800

7,620 

7,580 

7,410 

7,380 

7,350

7,310 

7,380 

7,410 

7,350 

7,240

414,610

25, 800 

27, 500 

26,000 

20,000 

15,000

11,900 

9,500 

6,500 

5,800 

4,800

4,500 

3,500 

2,500 

2,200 

1,800

,790 

,640 

,420 

,280 

,200

,060 

,050 

,100 

,100 

,080

,130 

,230 

,020 

,110 

,010

S3, 000, 000 

2, 980, 000 

2,130,000 

al, 400, 000 

a 900, 000

620,000 

441,000 

277,000 

230,000 

180,000

157,000 

113,000 

76,300 

63,600 

48,400

44,800 

38,100 

31,800 

27,600 

25,300

21,800 

21,500 

a 22, 000 

21,900 

21,400

22,300 

24,500 

20, 400 

22,000 

19,700

13,001,200

8,733,860 

120,233,340

s Computed by subdividing day.

a Computed from estimated concentration graph.
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER AT LEES FERRY, ARIZ. Continue

Particle-size analyses of suspended-sediment, water year October 1956 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, plpet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

Oct. 25, 1956 ..

Jan. 24, 1957 ..

Time

2:30 p. m. 

10:00 a. m. 

2:00 p. m. 

2:30 p.m. 

11:20 a. m. 

10:20 a. m.

11:30 a. m. 

8:10 a. m. 

3:00 p.m. 

4:00 p.m. 

10:00 a. m. 

10:30 a. m. 

10:30 a. m. 

12:20 p.m.

4:20 p.m. 

9:30 a. m. 

10:50 a. m. 

10:50 a. m. 

11:50 a. m. 

10:40 a. m. 

12:20 p.m. 

10:30 a. m.

2:40 p.m. 

10:50 a. m. 

10:50 a. m. 

11*0 a.m. 

9:50 a. m.

Discharge 

(cfs)

3,240 

4,620 

4,650 

3,500 

4,400 

8,680

8,950 

7,690 

7,480 

8,790 

18,400 

55,100 

55,100 

43,500

98,800 

123,000 

108,000 

108,000 

81,200 

85,900 

50,400 

64,000

36,600 

36,100 

36,100 

24,700 

20,600

Water 

temperature 

(°F)

52 

42 

39 

34 

37 

49

54 

50 

56 

62 

60 

57 

57 

62

70 

64 

62 

62 

68 

71 

73 

76

77 

75 

75 

75 

77

Suspended se

Concentration 

of sample 

(ppm)

722 

4,760 

849 

429 

827 

5,010

2,920 

2,450 

1,970 

1,930 

4,580 

6,100 

6,100 

4,580

5,770 

4,470 

3,670 

3,670 

3,300 

2,160 

5,990 

8,060

2,030 

17,600 

17,600 

9,510 

6,200

Concentration 

of suspension 

analyzed 

(ppm)

5,120 

4,830 

2,810 

2,620 

6,120 

4,100

3,740 

4,800 

3,660 

3,100 

4,050 

4,320 

4,660 

3,610

3,890 

3,580 

2,220 

2,320 

3,700 

2,780 

5,000 

3,790

4,280 

4,410 

4,530 

3,950 

3,840

Percent fin

0.002

18 

1

15 

3

52 

2

0.004

42 

65 

36 

38 

47 

46

34 

46 

46 

38 

51 

23 

2 

24

23 

24 

18 

14 

13 

18 

34 

50

32 

57 

5 

56 

48

0.008

28 

4

22 

19

67 

10

0.016

60 

86 

50 

53 

65 

65

45 

60 

61 

53 

63 

34 

29 

34

35 

34 

25 

23 

21 

25 

54 

69

45 

75 

76 

79 

73
Aug. 25, 1957 ..

Sept. 2. ........

Sept. 28. .......

2:00 p. m.

11:40 a. m.

10:00 a. m.

18,400 

15,200

15,200

14,700

42,500

41,500

7,450

77

74

67

23, 500

7,920

16, 200

27,200

900

4,610

4,100

3,460

3,310

3,340

3

60

6

50

27

18

86

80

38

Particle-size analyses of bed material, water year October 1955 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date of collection

Oct. 16, 1955 ..... 

Apr. 14, 1956 ....

Time

4:05 p.m. 

12:30 p.m. 

10:45 a. m.

Discharge 

(cfs)

3,560 

10,000 

62,800

Water 

temperature 

(°F)

65 

55 

70

Number of 

sampling 

points

3 

3 

3

Bed 

Percent finer than ind

0 0.062

2 

1 

0

0.125

16 

6 

2

0.250

71 

30 

33

0.50

100 

96 

97
COLORADO RIVER BASIN

PARIA RIVER BASIN 

PARIA RIVER AT LEES FERRY, ARIZ.

LOCATION. At gaging station half a mile upstream from mouth and one mile northwest of

Lees Ferry, Coconino County.

DRAINAGE AREA. 1,570 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: October 1947 to February 1950. 

Water temperatures: October 1956 to September 1957. 

Sediment records: October 1947 to September 1957. 

EXTREMES, 1956-57. Water temperatures; Maximum, 94°F July 25; minimum, 33°F Nov. 17,

22, Dec. 20, Jan. 17.

Sediment concentrations: Maximum daily, 309,000 ppm July 13; minimum daily, 3 ppm 

Oct. 6-10. 

Sediment loads: Maximum daily, 697,000 tons July 13; minimum daily, less than 0.05 ton

on several days in October, 

EXTREMES, 1947-57. Water temperatures (1956-57): Maximum, 94°F July 25, 1957; minimum,

33°F Nov. 17, 22, Dec. 20, 1956, Jan. 17, 1957. 

Sediment concentrations: Maximum daily, 411,000 ppm Aug. 27, 1952; minimum daily,

1 ppm June 1-10, 1950. 

Sediment loads: Maximum daily, 1,740,000 tons Aug. 5, 1948; minimum daily, less than

0.05 ton on many days.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in 

WSP 1513. Flow affected by ice Nov. 20-22, Dec. 2-3, 9-13, 15-31.

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement, generally during daylight hours/

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

Average

Oct.

65

72

83

66

66

76

64

75

72

70

65

67

58

61

74

66

69

69

56

71

66

68

62

57

60

63

63

55

54

50

54

65

Nov.

44

47

43

37

45

47

57

57

49

49

45

48

44

49

46

36

33

44

40

35

40

33

36

40

46

37

43

36

45

40

43

Dec.

34

43

37

34

44

45

43

36

38

35

35

40

37

36

40

35

41

40

40

33

37

38

34

36

35

34

44

35

38

36

41

38

Jan.

35

44

37

34

"

42

44

44

42

36

40

43

45

43

47

47

33

41

36

40

45

34

42

43

41

40

34

39

42

39

40

Feb.

39

35

37

36

36

35

43

48

53

51

52

52

52

52

56

56

59

58

56

53

53

63

51

59

49

57

63

58

50

Mar.

48

55

57

52

56

59

56

51

61

60

47

50

58

57

51

55

56

61

54

59

52

40

50

45

44

_

54

47

57

68

69

54

Apr.

50

49

58

52

58

70

54

53

70

74

75

75

59

59

76

59

62

55

69

53

58

55

56

59

57

65

56

53

73

62

61

May

58

71

75

68

70

79

72

72

80

-

62

58

61

75

58

76

74

67

65

54

70

70

68

57

61

74

80

81

85

73

70

69

June

73

70

81

84

84

86

78

87

80

67

72

73

79

84

70

69

78

86

72

78

75

88

88

83

--

82

86

86

80

82

79

July

74

85

82

90

75

77

80

85

78

84

84

66

74

79

74

82

79

69

85

81

73

89

78

94

92

90

87

74

83

92

81

Aug.

68

86

78

75

82

86

81

80

81

76

88

79

76

88

67

88

69

78

83

72

69

80

78

79

74

73

76

68

69

64

77

Sept.

65

62

69

73

72

86

71

78

69

71

72

73

75

66

82

69

77

71

77

71

70

67

73

77

65

83

63

62

80

72
PARIA RIVER BASIN 

PARIA RIVER BASIN Continued

PARIA RIVER AT LEES FERRY, ARIZ. Continued 

Suspended sediment, water year October 1956 to September 1957

147

Day

1. .....

2. ..... 

3. .....

4. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

11......

17. .....

18. ..... 

19. .....

20. .....

24. .....

25. .....

29. .....

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

6. .....

&..... 

9. ..... 

10. .....

13...... 

14. ..... 

15......

16. .....

1ft

20. .....

21...... 

22. ..... 

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

October

Mean 

discharge 

(cfs)

4.8 

5.2 

5.2 

5.2 

4.8

4.8 

4.8 

4.5 

4.8 

4.8

4.5 

4.5 

4.5 

4.5 

4.8

4.5 

4.5 

4.8 

4.8 

4.8

5.2 

5.2 

5.2 

4.8 

6.8

12 

9.0 

8.5 

108 

51 

24

334.8

Suspended sediment

Mean 

concentration 

(ppm)

5

1 '

4

1 '

} »

69, 700 

36, 000 

15,000

--

Tons 

per 

day

0.1 

(t)

(t)

.1

.8

s 53, 800 

5,140 

972

59,916.1

January

16 

14 

24 

20 

33

29 

28 

28 

36 

24

14 

17 

83 

109 

91

44 

24 

13 

14 

14

18 

22 

13 

19 

28

29 

29 

33 

20 

15 

11

912

100 

80 

150 

170 

250

2,100 

1,200 

2, 700 

1,300 

4,500

11,200 

1,900 

29, 600 

55,200 

32, 000

14, 500 

8,000 

7,000 

6,500 

3,150

1,100 

780 

760 

450 

460

530 

910 

470 

900 

1,510 

1,050

--

4.3 

3.0 

9.7 

9.2 

a 22

164 

91 

204 

126 

292

423 

87 

817,700 

317,700 

8,150

1,720 

518 

S250 

246 

119

53 

46 

27 

23 

35

41 

71 

42 

49 

61 

31

48,317.2

November

Mean 

discharge 

(cfs)

19 

16 

12 

10 

13

17 

14 

13 

12 

12

12 

12 

12 

12 

11

9.5 

8.0 

9.0 

12 

12

9.0 

8.0 

6.4 

9.5 

17

16 

17 

14 

18 

15

377.4

Suspended sediment

Mean 

concentration 

(ppm)

1,810 

1,550 

900 

2,550 

5,710

2,790 

1,210 

700 

300 

200

}'

90 

120 

50 

80 

200

250 

170 

110 

170 

670

425 

410 

490 

390 

400

--

Tons 

per 

day

93

67 

29 

69 

200

128 

46 

25 

10 

6.5

2.6

2.3 

2.6 

1.2 

2.6 

6.5

6.1 

3.7 

1.9 

4.4 

31

18 

19 

19 

19 

16

839.8

February

13

14 

19 

18 

17

17 

17 

20 

30 

90

60 

90 

89 

74 

71

54 

34 

29 

33 

32

30 

33 

28 

66 

44

28 

22 

20

1,092

420 

180 

170 

310 

310

750 

1,860 

1,450 

2,500 

49,700

16,000 

20,500 

16,000 

22,500 

19, 500

15,000 

19,000 

8,500 

4,900 

3,600

5,900 

5,700 

2,700 

9,240 

13,100

11,600 

6,200 

3,200

"

15 

6.8 

8.7 

15 

14

34 

85 

78 

202 

s H, 100

2,590 

s 6, 220 

3,840 

4,500 

3,740

2,190 

1,740 

666 

437 

311

478 

508 

204 

s2, 110 

1,560

877 

368 

173

47,070.5

December

Mean 

discharge 

(cfs)

14 

13 

11 

14 

14

20 

17 

17 

13 

4.8

6.8 

5.2 

9.5 

19 

20

13 

12 

13 

11 

5.6

7.2 

8.5 

5.6 

4.8 

6.0

5.2 

5.6 

8.0 

10 

6.8 

12

332.6

Suspended sediment

Mean 

concentration 

(ppm)

270 

280 

375 

180 

160

175 

225 

290 

180 

200

200 

110 

60 

125 

1,270

580 

475 

440 

290 

160

180 

80 

75 

45 

70

75 

300 

200 

860 

425 

160

"

Tons 

per 

day

10 

9.8 

11 

6.8 

6.0

9.4 

10 

13 

6.3 

2.6

3.7 

1.5 

1.5 

6.4 

69

20 

15 

15 

8.6 

2.4

3.5 

1.8 

1.1 

.6 1.1'

1.1 

4.5 

4.3 

23 

7.8 

5.2

282.0

March

20 

20 

20 

28 

24

19 

20 

16 

17 

19

20 

16 

13 

14 

12

11 

11 

12 

13 

12

11 

14 

13 

9.5 

11

11 

9.0 

6.4 

7.6 

9.5 

9.5

448.5

4,900 

1,800 

750 

750 

1,750

7,200 

3,800 

6,100 

2,000 

750

1,250 

2,750 

1,700 

1,200 

1,380

1,450 

440 

200 

180 

150

90 

120 

220 

140 

100

125 

95 

45 

50 

30 

25

265 

97 

40 

57 

113

369 

205 

264 

92 

38

68 

119 

60 

45 

45

43 

13 

6.5 

6.3 

4.9

2.7 

4.5 

7.7 

3.6 

3.0

3.7 

2.3 

.8 

1.0 

.8 

.6

1,981.4

s Computed by subdividing day.

t Less than 0.05 ton.

a Computed from estimated concentration graph.
COLORADO RIVER BASIN 

PARIA RIVER BASIN Continued 

PARIA RIVER AT LEES FERRY, ARIZ.--Continued 

Suspended sediment, water year October 1956 to September 1957 Continued

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.

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.

April

Mean 

discharge 

(cfs)

13

15 

20 

20 

14

13 

11 

11 

9.5 

10

10 

8.5 

6.8 

8.5 

9.0

6.8 

5.2 

5.2 

5.2 

5.2

5.2 

5.2 

5.6 

14

15

33 

22 

14 

12 

11

343.9

Suspended sediment

Mean 

concentration 

(ppm)

90 

175 

185 

660

875

425 

180

81 

35

4

17

2,100 

23,000 

29, 000 

14, 300 

4,200

-

July

3.6 

3.6 

3.9 

3.6 

3.6

3.9 

4.5 

4.5 

4.5 

4.5

4.8 

729 

535 

89 

24

11 

39 

51 

13 

16

8.0 

25 

11 

6.4 

4.2

24 

13 

42 

20 

9.0 

13

1,727.6

35

44

175,000 

309,000 

260, 000 

140,000

84, 000 

52,400 

36, 800 

32,000 

16,000

7,000 

14, 300 

13,000 

17, 000 

9,000

24, 400 

18,000 

75,900 

45,000 

53,000 

51,000

Total discharge lor year (c£s-< 

Total load for year (tons) ....

Tons 

per 

day

3.2 

7.1 

10 

36 

33

15 

5.3

2.1

.7

.1

.5

187 

1,370 

1,100 

463 

125

3,370.6

0.3

.5

s676, 000 

s697, 000 

74, 000 

10, 100

2,590 

s!3, 500 

s6,350 

al,200 

691

151 

al, 940 

386 

294 

102

s2, 110 

632 

slO,600 

2,520 

1,340 

1,860

1,503,370.5

May

Mean 

discharge

(cfs)

12 

10 

9.0 

8.0 

7.6

7.2 

7.6 

8.5 

12 

17

14 

16 

16 

12 

10

12 

18 

20 

17 

22

13 

11

21 

67 

48

22

16 

14 

13 

11 

8.5

500.4

Suspended sediment

Mean 

concentration 

(ppm)

6,800 

3,200 

820 

290

75

75 

150 

60 

40 

3,000

3,900 

1,100 

3,250 

1,000 

450

250 

500 

900 

1,900 

4,200

15,500 

3,250 

2,440 

10, 900 

18,900

23, 100 

17, 200 

8,600 

1,600 

1,800 

900

-

Tons 

per 

day

220 

86 

20 

6.3

1.5

1.5 

3.1 

1.4 

1.3 

138

147 

48 

140 

32 

12

8.1 

24 

49 

87 

249

544 

97 

s230 

s 2, 290 

2,450

1,370 

743 

325 

56 

53 

21

9,454.2

August

11 

5.6 

5.6 

3 9 

33

6.0 

4.2 

3.4 

3.6 

3.6

3.9 

4.8 

73 

26 

21

22 

11 

6.8 

6.4 

7.6

8.0 

573 

86 

56 

108

48 

36 

5.6 

6.8 

327 

349

1,865.8

25,000 

10,000 

4,000 

9,000 

27,000

6,000 

760 

450 

340 

280

275 

500 

169,000 

128,000 

78,000

55,000 

41,000 

11,000 

11,000 

4,000

1,500 

212,000 

139,000 

104, 000 

43,900

44, 100 

92, 200 

58,000 

52,000 

148, 000 

189, 000

-.

742 

a 150 

60 

95 

s7, 110

97 

8.6 

4.1 

3.3 

2.7

2.9 

6.5 

s 89, 800 

9,650 

4,590

3,390 

1,260 

202 

190 

82

32 

s535,000 

s 37, 700 

s 21, 200 

si 3, 100

s 7, 240 

s 10, 600 

909 

990 

8454,000 

3295,000

1,493,217.1

June

Mean 

discharge

(cfs)

7.2 

6.0 

6.0 

5.6 

4.8

4.8 

4.5 

4.2 

3.9 

13

25 

26 

16 

9.5

7.6

5.6

4.5 

4.8 

4.8 

4.5

4.2 

3.9 

3.9 

3.9 

3.9

3 9 

3.9 

3.9 

3.9 

3 9

207.6

Suspended sediment

Mean 

concentration 

(ppm)

I 198

50

12,700

13, 200 

11,000 

13,000 

29,000 

25,500

6,000 

524 

379 

191

177

173 

113

114 

72

--

Tons 

per 

day

3.3

.6

s975

s 1, 550 

772 

562 

744 

523

91 

6.4 

4.9 

2.5 

2.2

2.0 

1.2

1.2 

.8

5,260.4

September

51 

22 

12 

9.5 

8.0

6.8 

6.0 

5.2 

4.8 

4.5

4.5 

4.8 

4.8 

4.5 

4.8

4.8 

4.2 

3.9 

4.2 

4.2

4.2 

4.5 

4.5 

4.2 

4.5

4.5 

4.5 

4.8 

4.8 

5.2

220.2

124,000 

65,000 

47,000 

25, 000 

1,070

530 

225 

80 

25

49 

27 

29 

27

-

lays) ...........................................................

................................................................ 3

18,300 

4,000 

1,580 

641 

23

9.7 

3.6 

1.1 

.3

.6 

.3 

.3 

.3

24,566.5

8,362.8 

,197,646.3

s Computed by subdividing day.

a Computed from estimated concentration graph.
PARIA RIVER BASIN Continued 

PARIA RIVER AT LEES FERRY, ARIZ. Continue

Particle-size analyses of suspended sediment, water year October 1956 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

July 12, 1957....

Time

9:10 a.m. 

3:00 p.m. 

3:00 p.m. 

10:10 a.m.

5:40 a.m. 

5:40 a.m. 

8:00 a.m.

Discharge 

(cfs)

645 

238 

238 

95

1,700 

1,700 

845

Water 

temperature 

CF)

66 

78 

78 

72

69 

69 

68

Suspended sed

Concentration 

of sample 

(ppm)

183, 000 

151,000 

151,000 

148, 000

219, 000 

219,000 

221, 000

Concentration 

of suspension 

analyzed 

(ppm)

3,990 

3,410 

3,500 

3,920

4,020 

4,250 

3,480

Percent fine

0.002

37 

5

26 

5

0.004

35 

39 

6 

62

34 

6 

29

0.008

57 

10

41 

9

0.016

56 

73 

72 

90

51 

47 

42
LITTLE COLORADO RIVER BASIN

LITTLE COLORADO RIVER AT WOODRUFF, ARIZ 

LOCATION. At gaging station at county bridge in Woodruff, Navajo County, 3J miles downstream f

DRAINAGE AREA. 8,100 square miles, approximately.

RECORDS AVAILABLE.-- Chemical analyses: June 1950 to June 1957 (discontinued).

Water temperatures: June 1950 to June 1957 (discontinued).

Sediment records: June 1950 to June 1957 (discontinued) . 

EXTREMES, 1956-57. Dissolved solids: Maximum, 347 ppm May 11-19, 21-29, 31; minimum, 151 ppm F

Hardness: Maximum, 224 ppm Oct. 29-30; minimum, 114 ppm Feb. 12-15.

Specific conductance: Maximum, 609 micromhos May 11; minimum, 237 micromhos Feb. 14.

Water temperatures: Maximum, 79°F May 28; minimum, 34°F Dec. 23-26.

Sediment concentrations: Maximum daily, 6,290 ppm Oct. 30; minimum daily, no flow on many days

Sediment loads: Maximum daily, 671 tons 'Oct. 30; minimum daily, 0 tons on many days. 

EXTREMES, 1950-57 . Dissolved solids: Maximum, 1,560 ppm Feb. 6, 8, 19-27, 1956; minimum, 129 pp

Hardness: Maximum, 532 ppm Feb. 6, 8, 19-27, 1956; minimum, 20 ppm Aug. 2, 1956.

Specific conductance: Maximum daily, 2,680 micromhos Feb. 21-22, 1956; minimum daily, 166 mic

Water temperatures: Maximum, 90 °F July 23, 1953; minimum, freezing point on several days in D

Sediment concentrations: Maximum daily, 66,400 ppm Aug. 4, 1951; minimum daily, no flow on man

Sediment loads: Maximum daily, 409,000 tons Aug. 28, 1951; minimum daily, 0 tons on many days

REMARKS. Records of specific conductance of daily samples available in district office at Albuqu

. 

October 1956 to September 1957 given in WSP 1513. No flow Apr. 10 to May 10, 20, 30, June 1-4

Chemical analyses, in parts per million, October 1956 to Ju

Date of collection

Oct. 1-28, 1956...

Oct. 31-Nov. 10 . .

Jan. 1-31, 1957 .. 

Feb. 1-11........

Mar. 1-31........

May 11-19, 21-29,31 

June 5, 9-16, 19-20 

23-24. ..........

Mean 

discharge 

(cfs)

1.99 

33.5 

4.34 

2.78 

2.47 

2.8 

5.26 

6.35

9.86 

58.5 

11 

6.4 

5.74 

4.53 

3.42 

.55

1.04

Silica 

(SiO,)

20 

18 

19 

17 

18 

17 

21 

20

22 

15 

17 

18 

18 

31 

29 

21

19

Iron 

(Fe)

Calcium 

(Ca)

46 

57 

42 

47 

48 

50 

44 

44

48 

33 

37 

38 

43 

41 

43 

47

40

Magnesium 

(Mg)

21 

20 

16 

18 

20 

19 

23 

21

23 

7.6 

11 

13 

16 

18 

20 

21

21

Sodium 

(Na)

Potassium 

(K)

30 

34 

23 

23 

27 

30 

27 

27

27 

7.6 

8.0 

12 

23 

35 

39 

45

50

Bicarbonate 

(HCO,)

194 

246 

166 

a!79 

b!87 

194 

199 

197

a227 

120 

127 

135 

161 

178 

206 

228

c228

Sulfate 

(SO,)

69 

69 

54 

61 

68 

69 

66 

61

58 

23 

36 

43 

61 

66 

66 

74

68

Chloride 

(Cl)

25 

16 

19 

22 

24 

26 

22 

21

19 

5.2 

9.5 

13 

20 

27 

26 

27

24

Fluoride 

(F)

Nitrate 

(NOS )

0.4 

2.3 

1.0 

.2 

.1 

.2 

.0 

.0

.0 

.5 

.3 

.3 

.1 

.0 

.0 

.1

.0

Boron 

(B)

a Includes equivalent of 2 parts per million of carbonate (CO,), 

b Includes equivalent of 4 parts per million of carbonate (CO,).

c Includes equ
LITTLE COLORADO RIVER BASIN

LITTLE COLORADO RIVER BASIN Continued

LITTLE COLORADO RIVER AT WOODRUFF, ARIZ. Continued

Temperature (°F) of water, October 1956 to June 1957 

/Once-daily measurement, generally between 11 am. and 6 p. m.J

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

Average

Oct.

a 65

a 66

70

70

66

62

63

65

66

61

60

59

62

63

61

61

61

62

60

60

64

60

a 49

57

54

55

54

52

49

50

54

60

Nov.

44

44

41

42

44

48

a40

46

50

50

52

52

48

45

44

41

42

43

42

38

37

38

40

37

40

42

40

39

40

38

43

Dec.

38

40

39

43

42

44

43

38

35

35

37

38

39

40

39

38

37

37

38

36

37

35

34

34

34

34

35

35

35

35

35

37

Jan.

35

38

36

37

40

42

41

46

48

42

50

51

51

51

49

45

40

39

43

39

..

39

38

39

41

44

43

40

40

40

40

42

Feb.

44

44

45

49

49

49

49

52

54

54

55

a 46

55

56

55

54

54

51

51

54

49

56

48

55

54

56

58

54

--

52

Mar.

49

51

48

53

50

57

58

a 47

57

53

59

54

53

55

55

54

57

54

53

48

50

50

43

48

54

59

60

55

58

57

62

52

Apr.

47

49

55

55

60

59

59

58

"

..

--

--

--

_

--

..

--

--

--

_

--

--

--

May

-.

--

..

--

--

--

--

55

a 54

65

60

59

70

58

..

70

77

78

79

75

June

69

77

75

72

a72

_

78

__

--

--

--

--

_

--

--

--

July Aug. Sept.

a Measurement obtained before 11 a. m.
152 COLORADO RIVER BASIN

LITTLE COLORADO RIVER BASIN Continued

LITTLE COLORADO RIVER AT WOODRUFF, ARIZ. Continued

Suspended sediment, October 1956 to June 1957

Day

1......

3. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

12. .....

13. .....

15. ..... 

16. .....

17. .....

19. .....

20. .....

24. .....

25. .....

27. .....

28......

30. ..... 

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

8...... 

9. ..... 

10. .....

11. .....

13

14. ..... 

15. .....

16. .....

19. ..... 

20. .....

21...... 

22. ..... 

23...... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

October

Mean 

discharge 

(cfs)

1.2 

.9 

1.2 

1.9 

2.4

2.4 

2.4 

2.1 

2.4 

1.9

1.7 

1.7 

1.7 

1.6 

1.6

1.6 

1.6 

1.7 

1.6 

1.2

1.2 

4.3 

4.3 

2.2 

1.7

1.7 

2.6 

2 8 

32 

35 

7.6

130.2

Suspended sediment

Mean 

concentration 

(ppm)

142 

143 

121 

198 

225

158 

152 

218 

205 

156

195 

201 

112 

83 

81

142 

114 

95 

90 

91

74 

319 

166 

126 

122

135 

131 

136 

2,320 

6,290 

2,060

-

Tons 

per 

day

0.5 

.3 

.4 

1.0 

1.5

1.0 

1.0 

1.2 

1.3 

.8

.9 

.9

.5 

.4 

.3

.6 

.5 

.4 

.4 

.3

.2 

3.7 

1.9 

.7 

.6

.6 

.9 

1.0 

S609 

S671 

42

1,345.8

January

5.7 

5.7 

5.7 

6.1 

6.1

6.1 

6.1 

6.1 

6.4 

9.3

7.6 

7.6 

11 

7.0 

5.7

5.0 

5.0 

5.0 

5.0 

5.7

5.3 

6.1 

5.3 

5.3 

5.7

6.1 

6.1 

6.4 

7.0 

8.2 

7.6

197.0

29 

32 

32 

58 

63

75 

56 

130 

107 

109

187 

198 

140 

294 

163

121

70 

44 

58 

57

56 

47 

35 

62 

71

96 

103 

111 

75 

89 

65

--

0.4 

.5 

.5 

1.0 

1.0

1.2 

.9 

2.1 

1.8 

2.7

3.8 

2.2 

4.2 

5.6 

2.5

1.6 

.9 

.6 

.8 

.9

.8 

.8 

.5 

.9 

1.1

1.6 

1.7 

1.9 

1.4 

2.0 

1.3

49.2

November

Mean 

discharge 

(cfs)

5.3 

4.2 

3.5 

4.6 

3.9

2. 8 

3.5 

4.6 

4.2 

3.5

3.1 

2.8 

2.6 

2.6 

2.8

2.8 

2.8 

2.8 

2.4 

2.1

2.1 

2.1 

2.2 

2.2 

2.2

2.2 

2.4 

2.8 

3. 1 

2 8

91.0

Suspended sediment

Mean 

concentration 

(ppm)

640 

415 

281 

245 

180

176 

154 

151 

165 

128

99 

184 

147 

94 

89

71 

57 

52 

62 

64

65 

63 

41 

42 

48

37 

40 

40 

57 

45

-

Tons 

per 

day

9.2 

4.7 

2.7 

3.0 

1.9

1.3 

1.5 

1.9 

1.9 

1.2

.8 

1.4 

1.0 

.7 

.7

.5 

.4 

.4 

.4 

.4

.4 

.4 

.2 

.2 

.3

.2 

.3 

.3

.5 

.3

39.1

February

6.4 

6.4 

6.4 

6.4 

7.0

7.0 

7.0 

6.4 

6.1 

6.4

43 

74 

63 

78 

19

11 

6.4 

6.4 

6.4 

6.1

6.1 

5.7 

5.7 

6.1 

5.7

5.3 

4.6 

5.0

423.0

60 

70 

82 

93 

96

88 

105 

146 

159 

166

662 

1,080 

592 

345 

334

246 

198 

176 

148 

132

152 

171 

186 

179 

158

191 

195 

166

-

1.0 

1.2 

1.4 

1.6 

1.8

1.7 

2.0 

2.5 

2.6 

2.9

s86 

s221 

sl!2 

73 

17

7.3 

3.4 

3.0 

2.6 

2.2

2.5 

2.6 

2.9 

2.9 

2.4

2.7 

2.4 

2 2

566.8

December

Mean 

discharge 

(cfs)

2.4 

2.8 

4.6 

3.9 

3.1

3.5 

5.7 

6.1 

3.9 

5.7

5.7 

6.4 

7.0 

6.4 

6.4

7.0 

7.0 

7.0 

6.1 

5.7

5.7 

5.7 

5.0 

6.1 

5.7

4.6 

4.2 

4.6 

4.6 

5.3 

5.3

163.2

Suspended sediment

Mean 

concentration 

(ppm)

16 

82 

82 

54 

55

92 

88 

152 

100 

79

76 

62 

49 

81 

85

88 

82 

158 

83 

54

50 

43 

45 

47 

36

41 

46 

42 

40 

30 

31

-

Tons 

per 

day

0.1 

.6 

1.0 

.6 

a. 5

.9

1.4 

2.5 

1.1 

1.2

1.2 

1.1 

.9 

1.4 

1.5

1.7 

1.5 

3.0 

1.4 

.8

.8 

.7 

.6 

.8 

.6

.5 

.5 

.5 

.5 

.4 

.4

30.7

March

5.7 

5.0 

5.0 

5.0 

4.6

4.6 

4.6 

4.6 

4.6 

4.2

4.2 

3 9 

3 9 

3 9 

4.2

4.6 

4.2 

4.2 

4.2 

5.0

4.2 

4.6 

4.6 

4.2 

3 9

4.2 

4.6 

5.0 

5.3 

5.0 

4.6

140.4

194 

179 

125 

125 

115

170 

166 

193 

287 

217

182 

180 

197 

203 

176

224 

184 

209 

179 

181

198 

159 

140 

74 

62

103 

184 

256 

203 

213 

210

3.0 

2.4 

1.7 

1.7 

1.4

2.1 

2.1 

2.4 

3.6 

2.5

2.1 

1.9 

2.1 

2.1 

2.0

2.8 

2.1 

2.4 

2.0 

2.4

2.2 

2.0 

1.7 

.8 

.7

1.2 

2.3

3.5 

2.9

9 Q u67.6

s Computed by subdividing day.

a Computed from estimated concentration graph.
LITTLE COLORADO RIVER BASIN

LITTLE COLORADO RIVER BASIN Continued

LITTLE COLORADO RIVER AT WOODRUFF, ARIZ.--Continued

Suspended sediment, October 1956 to June 1957--Continued

Day

1. .....

2. .....

4. ..... 

5. .....

6. .....

7. .....

8...... 

9. ..... 

10. .....

12. ..... 

13. .....

15. .....

17. .....

18. ..... 

19. ..... 

20......

22. .....

23. ..... 

24. ..... 

25. .....

26......

28...... 

29. .....

30...... 

31. ..... 

Total.

April

Mean 

discharge 

(cfs)

4.2 

5.0 

4.2 

3.9 

3.5

3.9

3.5 

2.5 

.1 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

30.8

Suspended sediment

Mean 

concentration 

(ppm)

201 

207 

130 

197 

194

307 

250 

224

--

Tons 

per 

day

2.3 

2.8 

1.5 

2.1 

1.8

3.2 

2.4 

1.5 

(et) 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

17.6

Total discharge October 1956 to June 1957 

Total load October 1956 to June 1957

May

Mean 

discharge

(cfs)

0 

0 

0 

0 

0

0 

0 

0 

0 

0

.4 

.5 

3.2 

.8 

.9

.7 

.5 

.2 

.2 

0

.5 

.2 

.3

.5 

.5

.4 

.2 

.2 

.1 

0

10.4

Suspended sediment

Mean 

concentration 

(ppm)

164 

60 

186 

143 

136

108 

94

84

91 

69 

138 

80

_.

Tons 

per 

day

0 

0 

0 

0 

0

0 

0 

0 

0 

0

.2

.1 

si. 8 

.3 

.3

.2

.1 

(et) 

(et) 

0

e. 1 

(et) 

e. 1 

e. 1 

.1

.1 

(t) 

. 1 

(t) 

0 

(et)

3.8

June

Mean 

discharge 

(cfs)

0 

0 

0 

0 

0.1

0 

0 

0 

.4 

.1

3.6 

4.2 

2.4 

1.0 

.4

.1 

0 

0 

.2 

.8

0 

0 

.1 

.1 

0

0 

0 

0 

0 

0

13.5

Suspended sediment

Mean 

concentration 

(ppm)

140 

322 

271 

176 

230

200

Tons 

per 

day

0 

0 

0 

0 

(et)

0 

0 

0 

e. 1 

(et)

s2.0 

3.7 

1.8 

.5 

.2

(et) 

0 

0 

e. 1 

.4

0 

0 

(et) 

(et) 

0

0 

0 

0 

0 

0

8.9

,199.5 

!,129. 5

e Estimated.

s Computed by subdividing day.

t Less than 0. OS ton.

a Computed from estimated concentration graph.
LITTLE COLORADO RIVER BASIN Continued 

LITTLE COLORADO RIVER AT WOODRUFF, ARIZ. Cont

Particle-size analyses of suspended sediment, October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W

Date 

of 

collection

Oct. 10, 1956 ....

Jan. 20, 1957... .

June 14 .........

Time

5:30 p.m. 

3:00 p.m. 

3:00 p.m. 

4:30 p.m.

5:00 p. m. 

9:00 a. m. 

3:30 p. m. 

4:00 p.m. 

4:30 p.m. 

11:00 a.m.

Discharge 

(cfs)

6.4 

20 

2. 8 

5.3

6.4 

75 

6.4 

6.4 

.3 

1.0

Water 

temperature 

(°F)

61 

50 

50 

35

39 

46 

48 

58 

79 

72

Suspended 

Concentration 

of sample 

(ppm)

160 

5,500 

129 

30

57 

1,190 

181 

203 

106 

176

Concentration 

of suspension 

analyzed 

(ppm)

6,040 

3,340

Percent f

0.002 0.004

90 

79

0.008 0.016

100 

100
LITTLE COLORADO RIVER BASIN--Continued

LITTLE COLORADO RIVER AT CAMERON, ARIZ

LOCATION. At bridge on U. S. Highway 89 at Cameron, Coconino County, 12 miles upstream from gagin

damsite, 9J miles downstream form Moenkopi Wash, 94 miles northwest of Cameron, and 45.5 miles 

DRAINAGE AREA. 26,500 square miles, approximately (above gaging station). 

RECORDS AVAILABLE.--Chemical analyses: October 1950 to September 1957. 

Water temperatures: October 1951 to September 1957.

Sediment records: October 1947 to September 1956 (monthly), October 1956 to September 1957 (dai

EXTREMES, 1956-57. Sediment concentrations: Maximum daily, 136,000 ppm July 30; minimum daily, n

Sediment loads: Maximum daily, 1,080,000 tons Aug. 27; minimum daily, 0 tons on many days. 

EXTREMES, 1947-57. Sediment concentrations: Maximum daily, 151,000 ppm Oct. 19, 1949; minimum da

Sediment loads. Maximum daily, 2,580,000 tons Sept. 21, 1952; minimum daily, 0 tons on many day

REMARKS. Records of specific conductance of daily samples available in district office at Albuque

site and gaging station during periods of storm runoff. Most of this inflow is from Moenkopi W

contributors. Sediment loads are computed at station with allowances made for inflow between s

October to December; tabulation omitted for this period. Records of discharge for station near 

1957 given in WSP 1513.

Chemical analyses, in parts per million, January to Septem

Date of collection

Jan. 11, 1957....

Feb. 1-8 ........

Feb. 15 .........

Apr. 13-19 ......

Mean 

discharge 

(cfs)

Silica 

(SiOa)

9.8 

8.5 

8.4

18

Iron 

(Fe)

0.05 

.02 

.01

.01

Calcium 

(Ca)

42 

26 

38 

45 

56 

64 

38 

31

31 

32 

39 

44 

42 

42 

48

Magnesium 

(Mg)

9.5 

4.0 

6.6 

9.0 

9.0 

6.2 

2.8 

3.1

2.8 

2.4 

3.1 

3.8 

5.2 

7.1 

6.2

Sodium 

(Na)

145 

81 

99 

131 

200 

177 

111 

76

72 

62 

64 

71 

90 

132 

155

Potassium 

(K)

2.9 

2.8 

2.9

3.0

Bicarbonate 

(HCO,)

244 

146 

117 

109 

128 

179 

175 

166

153 

151 

151 

153 

132 

125 

125

Sulfate 

(S04 )

42 

44 

85

38

Chloride 

(Cl)

71 

138 

181

127

Fluoride 

(F)

0.2 

.3 

.3

.3

Nitrate 

(NO,)

0.9

.7 

1.1

.6

Boron 

(B)

0.15 

.09 

.11

.07
LITTLE COLORADO RIVER BASIN Continued

LITTLE COLORADO RIVER AT CAMERON, ARIZ.--Co

Chemical analyses, in parts per million, January to September 1

Date of collection

July 17-18, 19b7..

Aug. 7-15, 17-31,

Sept. 3-4, 6-9 ... 

Sept. 10-12,14-16

Mean 

discharge 

(cfs)

Silica 

(SiO.)

20

Iron 

(Fe)

.03

Calcium 

(Ca)

7.9 

7.9 

107 

83 

123

79 

78 

81

Magnesium 

(Mg)

.0 

.0 

19 

13 

24

13 

12 

11

Sodium 

(Na)

105 

159 

346 

243

184

li 

205 

252

Potassium 

(K)

4.9 

2

Bicarbonate 

(HCO.)

221 

a 270 

563 

372 

562

378 

226 

174

Sulfate 

(SOJ

251

Chloride 

(Cl)

168

Fluorirte 

(F)

1.0

Nitrate 

(NO,)

.8

Boron 

(B)

.33

a Includes equivalent of 8 parts per million of carbonate (CO3 ).
LITTLE COLORADO RIVER BASIN

LITTLE COLORADO RIVER BASIN Continued

LITTLE COLORADO RIVER AT CAMERON, ARIZ.--Continued

Temperature (°F) of water, January to September 1957 

/Once-daily measurement, generally between 11 a.m. and 6 p.m.

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

Average

Oct. Nov. Dec. Jan.

..

--

..

43

44

47

51

47

44

41

40

39

39

38

38

37

40

43

41

42

42

42

40

41

..

Feb.

45

46

49

52

48

50

54

57

55

53

54

53

52

53

54

51

52

53

53

54

..

54

55

--

_

Mar.

54

53

52

53

55

58

60

62

55

57

54

52

53

54

51

50

49

57

58

60

55

52

45

48

58

61

62

62

60

58

52

55

Apr.

48

52

54

54

56

58

60

64

65

66

64

63

63

63

63

64

64

65

62

58

56

50

..

--

_

May June July

--

--

72

70

._

68

73

71

--

._

70

82

82

82

82

80

..

Aug.

..

77

82

80

76

..

84

80

81

81

82

81

86

..

84

80

76

78

76

80

78

82

75

81

80

69

74

70

71

79

Sept.

78

85

80

82

76

76

80

80

70

70

70

70

74

75

68

64

~

~

..
158 COLORADO RIVER BASIN

LITTLE COLORADO RIVER BASIN Continued 

LITTLE COLORADO RIVER AT CAMERON, ARIZ.--Continued 

Suspended sediment, water year October 1956 to September 1957

Day

1......

2. ..... 

3. .....

4. .....

5. .....

6. .....

7. .....

8. .....

10. .....

11. .....

13. .....

15. ..... 

16......

17. .....

18. ..... 

19. .....

20. .....

24. ..... 

25. .....

26. .....

27. .....

29. .....

31. .....

Total.

L..... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9. ..... 

10. .....

14. ..... 

15. .....

18. ..... 

19. ..... 

20. .....

22. ..... 

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

January

Mean 

discharge 

(cfs)

0 

.1 

3.2 

4.0 

3.5

4.0 

3.2 

3.5 

1.6 

2.8

3,540 

5,990 

4,050 

1,600 

925

690 

755 

575 

379 

268

191 

101 

92 

101 

92

72 

64 

119 

51 

39 

29

19,748.9

Suspended sediment

Mean 

concentration 

(ppm)

23,600 

31, 100 

15,700 

13, 600 

14, 400

11,500 

13,400 

14, 000 

11,200 

6,700

5,800 

4,500 

3,100 

2,600 

2,100

1,840 

1,190

830 

810 

490

--

Tons 

per 

day

0 

(et)

el

s407,000 

s 508, 000 

172,000 

58, 800 

36, 000

21, 400 

27, 300 

21,700 

11,500 

4,850

2,990 

1,230 

770 

709 

522

358 

206 

el, 000 

114 

85 

38

1,276,580

April

79 

95 

116 

79 

101

98 

81 

64 

55 

39

23 

16 

15 

28 

29

20 

13 

9 3 

6.4 

3.2

.9 

.2 

0 

0 

0

0 

0 

0 

0 

0

971.0

1,220 

1,360 

1,380 

1,080 

1,360

1,500 

881 

925 

558 

548

424 

426 

506 

500 

342

336

227 

260 

254 

196

179 

183

--

260 

349 

432 

230 

371

397 

193 

160 

83 

58

26 

18 

20 

38 

27

18 

8 

7 

4 

2

(t) 

(t) 

0 

0 

0

0 

0 

0 

0 

0

2,702

February

"Mean 

discharge 

(cfs)

20 

21 

20 

17 

16

11

8.5 

8.1 

7.4 

5.8

5.8 

5.5 

4.8 

363 

1,480

1,760 

1,880 

1,720 

1,520 

1,480

1,680 

1,440 

1,240 

960 

814

1,240 

1,640 

1,240

20,607.9

Suspended sediment

Mean 

concentration 

(ppm)

560 

510 

630 

400 

270

170 

130 

80 

70

4,680 

13,800

15, 500 

13,400 

10,500 

10, 800 

11,200

13,800 

11,500 

10,600 

11,000 

8,000

14,100 

18,400 

13, 200

Tons 

per 

day

30 

29 

34 

18 

12

5 

3 

2 

1

el

s 12, 500 

55, 100

73,700 

68,000 

48,800 

44, 300 

44,800

62,600 

44,700 

35, 500 

28,500 

17,600

s 52, 900 

81,500 

44, 200

714.838

May

0 

0 

0 

0 

0

0 

0 

0 

.9 

.5

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

14 

6.1 

3.5 

1.6

1.2 

.8 

.2 

0 

0 

0

28.8

0 

0 

0 

0 

0

0 

0 

0 

el 

(et)

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

el, 600 

e200 

e70 

e!5

elO 

e7 

e2 

0 

0 

0

1,905

March

Mean 

discharge 

(cfs)

1,150 

909 

768 

630 

608

553 

465 

384 

356 

313

356 

487 

640 

890 

660

509 

397 

317 

257 

254

250 

225 

200 

175 

150

150 

257 

225 

200 

150 

100

12. 985

Suspended sediment

Mean 

concentration 

(ppm)

11,500 

10, 200 

7,100 

5,500

6,800 

5,500 

5,100 

4,750 

5,750

6,250 

10, 200 

8,300 

7,100 

4,750

4,300 

4,300 

4,750 

4,200 

2,930

2,560 

2,590 

2,520 

1,880 

1,980

3,300 

3,180 

1,470 

1,470 

1,450 

1.200

Tons 

per 

day

e 34, 000 

28, 200 

21, 200 

12, 100 

9,030

10, 200 

6,910 

5,290 

4,570 

4,860

6,010 

13,400 

14, 300 

17, 100 

8,460

5,910 

4/610 

4,070 

2,910 

2,010

1,730 

1,570 

1,360 

888 

802

1,340 

2,210 

893 

794 

587 

324

227. 638

June

0 

0 

0 

0 

0

0 

0 

0 

0 

60

63

7.4 

2 '.2 2 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

132.8

0 

0 

0 

0 

0

0 

0 

0 

0 

e 15, 000

e 12, 000 

el, 100 

elOO 

e2 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

28, 202

e Estimated.

s Computed by subdividing day.

t Less than 0.50 ton.
LITTLE COLORADO HIVER BASIN

LITTLE COLORADO HIVEH BASIN Continued

LITTLE COLORADO HIVER AT CAMERON, ARIZ.--Continued

Suspended sediment, water year October 1956 toSeptember 1957 Continued

159

Day

1......

2. .....

3. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

14. .....

15......

16. .....

17. .....

19. .....

20. .....

22. .....

23. .....

24. .....

25......

26......

27. .....

30. ..... 

31...... 

Total.

July

Mean 

discharge 

(cfs)

0 

0 

0 

0 

0

0 

2.1

5.7 

0 

69

8.3 

36 

4.6 

.4 

0

0 

108 

240 

116 

8.3

2.8 

.6 

0 

0 

0

89 

26 

6.5 

347 

781 

250

2,101.3

Suspended sediment

Mean 

concentration 

(ppm)

45,700

19, 200 

17, 100 

7,330 

3,000

8,500 

40, 400 

59,300 

54,800

71,100 

115,000 

99, 700 

85, 200 

136, 000 

97,000

Tons 

per 

day

0 

0 

0 

0 

0

0 

e250 

e700 

0 

813,700

s493 

s2,470 

s98 

3 

0

0 

s 15, 900 

s 29, 200 

s 21, 100 

1,270

e!70 

e30 

0 

0 

0

s 28, 000 

8,670 

1,880 

s 163, 000 

s 330, 000 

70, 300

687,234

August

Mean 

discharge 

(cfs)

110 

127 

201 

89 

240

408 

2,890 

1,670 

992 

452

215 

118 

60 

85 

592

432 

240 

157 

86 

375

1,290 

927 

569 

238 

1,500

2,840 

4,570 

2,700 

1,250 

868 

668

26, 959

Suspended sediment

Mean 

concentration 

(ppm)

84,000 

82, 500 

112,000 

104, 000 

134, 000

130,000 

119,000 

54, 300 

78,400 

47, 500

58,000 

67, 500 

71,000 

74, 300 

67,000

56, 900 

82,000 

96,000 

55,000 

82, 800

98, 200 

108,000 

85, 300 

81,000 

132,000

86, 100 

81,600 

65,800 

67,500 

58, 000 

56,400

Tons 

per 

day

25, 900 

s 36, 500 

65, 300 

26, 800 

s99,700

s 224, 000 

sl,010,000 

s 264, 000 

s 233, 000 

60, 100

34,900 

22, 300 

si 3, 800 

s 20, 000 

a 166, 000

s 74, 200 

55,100 

s 44, 300 

13, 200 

s 115, 000

8407,000 

s 284, 000 

s 143, 000 

s 58, 600 

s 958, 000

s 71 5, 000 

si, 080,000 

s 505, 000 

s 240, 000 

s 146, 000 

s 106, 000

7, 246, 700

September

Mean 

discharge 

(cfs)

1,490 

994 

608 

592 

352

218 

135 

84 

48 

28

14 

6.1 

8.5 

41 

28

16 

7.3 

1.5 

.3 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

4,671.7

Suspended sediment

Mean 

concentration 

(ppm)

65,100 

72,000 

52,000 

49, 000 

33, 100

27,800 

22, 700 

18,600 

18,000 

12,900

12, 900 

3,900 

1,200 

5,290 

4,200

11,800 

9,000 

2,750

~

Tons 

per 

day

s 308, 000 

200,000 

88, 500 

81, 200 

32,600

16, 400 

8,270 

4,220 

2,330 

975

488 

64 

28 

S608 

318

510 

177 

11 

e2 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

744, 701

Total discharge for year (cfs-days). 

Total load for year (tons)..........

88,206.4

10,930,500

e Estimated

s Computed by subdividing day
LITTLE COLORADO RIVER BASIN Continued 

LITTLE COLORADO RIVER AT CAMERON, ARIZ.--Contin

Monthly suspended-sediment loads, October 1947 to Septembe

Month

October... 

November. 

December . 

January . . . 

February. . 

March .... 

April .....

August .... 

September.

Total....

Published 

in WSP

1948 water year

Discharge 

cfs-days

38, 009 

357.8 

513.7 

1,666 

3,257.8 

9,614 

33,963 

432 

443 

2,643 

10,177.5 

303.5

101,380.3

Sediment 

load-tons

67,660 

(a) 

(a) 

9,721 

152,080 

748,480 

1,533,570 

2,555 

12,500 

213,470 

1,659,770 

44,990

4,445,000

1119

1949 water year

Discharge 

cfs-days

2,24(5.1 

1,097.1 

1,044.1 

9,243 

6,877 

48,976 

39, 268 

3,030.4 

850.1 

5,928 

20,858.5 

5,417.4

144,795.7

Sediment 

load-tons

443,006 

135,700 

50,100 

481,600 

741,500 

2,736,000 

1,208,000 

52,680 

166,600 

1,338,000 

5,898,000 

1,032,000

14,280,000

1149

1950 waterjear

Discharge 

cfs-days

3, Ml. 2 

127.1 

15.1 

94.7 

5,701 

7,338 

1,951.2 

0 

0 

3,877 

503.3 

845.2

23,723.8

Sediment 

load-tons

V,462,000 

408 

10 

735 

305,100 

275,500 

27,480 

0 

0 

925,000 

100,000 

114,000

3,210,000

1179

1951 water year

Discharge 

cfs-days

' 6 

10.9 

47.6 

76.8 

7.1 

0 

228.7 

661.7 

0 

2,002.1 

13,243.9 

9,031.9

25,310.7

Sediment 

load-tons

0 

e6 

e25 

e50 

e4 

0 

5,320 

48,560 

0 

374, 100 

3, 206, 000 

1,336,000

4, 970, 000

1213

1952 water year

Discharge 

cfs-days

4,561.5 

51.7 

74.2 

62, 893 

5,139 

6,510 

66, 470 

10,622.9 

83. 2 

964.7 

6,330.4 

14,026.3

177,726.9

Sediment 

load-tons

1,112,000 

1,250 

3,820 

7,350,000 

35,810 

258,600 

3,744,000 

472,900 

2,100 

282,000 

1,746,000 

4,064,000

19,070,000

1253

1953 wa

Discharge 

cfs-days

57.6 

246 

1,976 

828 

716.8 

7,717 

2,891.2 

0 

0 

7,509 

7,589.5 

114.6

29,645.7

128

e Estimated.

a Less than 100 tons per day.

b Computed from water-sediment curve.

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

Date 

Of 

collection

July 17, 1957 ....

Aug. 7 ..........

Aug. 25 .........

Time

8:45 p.m. 

8:45 p.m. 

1:10 p.m. 

6:35 p.m. 

6:35 p.m. 

6:30 p.m. 

11:30 a.m. 

4:50 p.m. 

7:15 a.m. 

7:30 a.m. 

10:00 a.m. 

7:00 p.m. 

3:30 p.m. 

12:55 p.m. 

6:00 p.m.

Discharge 

(cfs)

710 

710 

22 

2,200 

2,200 

1,100 

6,230 

5,060 

104 

1,400 

3,080 

3,680 

2,100 

48 

5.5

Water 

temperature 

(°F)

70 

70 

77 

81 

81 

78 

77 

78 

68 

69 

70 

67 

71 

60 

64

Suspended sedim

Concentration 

of sample 

(ppm)

57,900 

57,900 

103, 000 

201,000 

201,000 

212,000 

222, 000 

98,900 

66, 100 

82, 600 

299, 000 

74,700 

62, 500 

5,440 

2,280

Concentration 

of suspension 

analyzed 

(ppm)

4,480 

4,000 

3,620 

4,860 

4,950 

3,160 

4,160 

4,340 

3,140 

4,300 

3,290 

4,620 

5,040 

3,980 

2,120

Percent finer 

0.002

47 

19

44 

3

0.004

59 

51 

95 

52 

6 

49 

42 

50 

93 

55 

28 

45 

52 

95 

96

0.008

71 

68

61 

61

0.016

81 

80 

99 

66 

65 

68 

57 

70 

100 

77 

37 

63 

75 

98 

98

0
LITTLE COLORADO RIVER BASIN 161 

LITTLE COLORADO RIVER BASIN Continued

MISCELLANEOUS ANALYSES OF STREAMS IN LITTLE COLORADO RIVER BASIN IN NEW MEXICO AND ARIZONA 

Chemical analyses, in parts per million, water year October 1956 to September 1957

Date of collection Silica

(Si02 )

Calcium

(Ca)

Magnesium

(Mg)

Sodium

(Na)

Bicarbonate

(CHO,)

Chloride

(CD

Hardness

asCaCO,

Calcium,

magnesium

Noncar bonate

Percent

sodium

dium

tion

Specific

conductance

(micromhos at

25-C)

PH

RIO PUERCO AT U. S. HIGHWAY 66 BRIDGE, 12 MILES WEST OF GALLUP, N. HEX.

Aug. 13, 1957 .... 

Sept. 8 ..........

13 

16

47 

390

198 

a 559

11 

141

298 136 

244 0

26

78

1.2 

11

763 

2,070

7.3 

8.5

MOENKOPI WASH NEAR TUBA, ARIZ.

July 17, 1957..... 

July 30 ..........

Aug. 8 ..........

Aug 11

Aug. 26..........

Sept. 9 ..........

30

8.3

--

_

-- 136 

150

190

356 

b231

78

12

30

JO

38

48

865

0

801

86 

93

25

32

8.5

2.8

654 

704

2,100

7.9 

9.1

R 8

7 0

6 9

7 1

6.9

a Includes equivalent of 25 parts per million of carbonate (CO3 ). 

b Includes equivalent of 17 parts per million of carbonate (CO,). 

c Includes equivalent of 15 parts per million of carbonate (CO3 ).
COLORADO RIVER MAIN STEM--Continued 

COLORADO RIVER NEAR GRAND CANYON, ARIZ

LOCATION. At gaging station at Kaibab Bridge, a quarter of a mile upstream from Bright Angel Cr

Coconino County, 26 miles downstream from Little Colorado River, and 267 miles upstream from 

DRAINAGE AREA. 137,800 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: August 1925 to November 1942, September 1943 to Septembe

Water temperatures: October 1936 to October 1942, September 1943 to September 1957.

Sediment records: October 1925 to November 1942, September 1943 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 1,370 ppm Oct. 1-31; minimum, 269 ppm July 1-20.

Hardness: Maximum, 717 ppm Aug. 26; minimum, 174 ppm July 1-20.

Specific conductance: Maximum daily, 2,090 micromhos Oct. 18; minimum daily, 373 micromhos Ju

Water temperatures: Maximum, 80°F Aug. 2-5, 18; minimum, 35°F on several days during December 

Sediment concentrations: Maximum daily, 34,600 ppm Jan. 12; minimum daily, 23 ppm Oct. 11.

Sediment loads: Maximum daily, 4,100,000 tons Sept. 2; minimum daily, 196 tons Oct. 11. 

EXTREMES, 1925-42, 1943-57. Dissolved solids: Maximum 1,890 ppm Sept. 21-30, 1934; minimum, 22

Hardness: Maximum, 792 ppm Sept. 1-10, 1940; minimum, 127 ppm June 11-17, 1926.

Specific conductance (1937-42, 1943-57): Maximum daily, 2,900 micromhos Sept. 6, 1940; minimu

Water temperatures (1936-42, 1943-57): Maximum 88°F July 17. 1944; minimum-, freezing point on 

Sediment concentrations: Maximum daily, 138,000 ppm Sept. 13, 1927; minimum daily, 23 ppm Oct. 

Sediment loads: Maximum daily, 27,600,000 tons Sept. 13, 1927; minimum daily, 196 tons Oct. 11

REMARKS. Records of specific conductance of daily samples available in district office at Albuqu

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-31, 1956 . . . 

Nov. 1-30. ........

Jan. 1-11, 1957 ... 

Jan. 12-14 ........

Feb. 1-22 ........

Feb. 23-28. .......

Mar. 1-31 ........

Apr. 1-4 .........

June 7-30.. .......

Mean 

discharge 

(els)

3,289 

5,462 

4,461 

4,261 

9,753 

5,684

6,020 

9,058 

8,801 

7,660 

9,757 

21,110

24, 530 

47, 280 

61, 530 

101.000

Silica 

(810,)

12 

15 

14 

15 

15 

16

15 

13 

19 

18 

18 

21

20 

18 

16 

14

Iron 

(Fe)

0.01 

.02 

.03 

.01 

.23 

.01

.01 

.02 

.01 

.02 

.07 

.24

.21 

.15 

.05 

.07

Calcium 

(Ca)

141 

142 

136 

136 

97 

119

116 

106 

105 

106 

98 

77

75 

67 

»5 

58

Magnesium 

(Mg)

63 

54 

53 

55 

26 

42

43 

35 

36 

39 

33 

21

21 

17 

15 

9.2

Sodium 

(Na)

227 

196 

200 

204 

161 

177

180 

144 

155 

164 

139 

75

66 

42 

38 

25

Potassium 

(K)

8.2 

7.1 

6.7 

6.8 

5.4 

6.2

6.7 

6.3 

6.1 

6.3 

6.2 

5.5

4.8 

4. 1 

4.4 

3 9

Bicarbonate 

(HCO,)

217 

241 

252 

267 

246 

237

233 

221 

219 

222 

214 

199

190 

191 

185 

164

Sulfate 

(SO.)

579 

523 

479 

471 

282 

392

392 

344 

359 

368 

322 

184

177 

125 

111 

75

Chloride 

(Cl)

226 

178 

197 

202 

148 

174

180 

125 

128 

146 

118 

61

54 

28 

25 

16

Fluoride 

(F)

0.5 

.5 

.4 

.4 

.6 

.4

.4 

.4 

.4 

.4 

.5 

.5

.5 

.5 

.5 

.4

Nitrate 

(NO,)

6.9 

8.5 

12 

10 

1.6 

9 3

9.6 

7.6 

7.3 

7.1 

5.7 

1.9

3.0 

2.3 

2 3 

l!7

Boron 

(B)

0.3

.3

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.0

.0
July 1-20, 1957 ...

July 21-Aug. 7 ....

Sept. 1-30 ........

Weighted average.

75, 600

43,330

26,030

21,000

14, 860

24, 170

15

16

16

14

18

21

16

.02

.02

.02

.03

.01

0.06

55

64

103

228

169

112

75

9.0

16

34

19

23

44

108

60

3.2

3.9

5.7

6.4

4.5

158

168

200

184

62

134

350

168

21

34

93

49

.6

.6

.5

.5

0.5

1.6

1.7

4.8

2.9

0
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR GRAND CANYON, ARIZ.--Co

Temperature (°F) of water, water year October 1956 to Septe

/Continuous-recording thermograph/

Day

2...................

4. ..................

5. ..................

6...................

7. ..................

8. ..................

9. ..................

10...................

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

13...................

14...................

15...................

16...................

17...................

18...................

19...................

20. ..................

21...................

22...................

27. ..................

28. ..................

29. ..................

31...................

Average .......

October

max

70 

69 

69 

69 

69

69 

68 

68 

67 

67

67 

66 

65 

64 

64

62 

61 

61 

61 

61

61 

61 

61 

60

57

57 

57 

55 

54 

53 

53

63

mln

69 

68 

68 

69 

69

68 

68 

67 

67 

67

66 

65 

63 

63 

62

61 

60 

60 

60 

60

60 

60 

60 

57 

56

56 

54 

53 

53 

52 

52

62

November

max

52 

52 

50 

49

47

47 

47 

46 

47 

47

48 

48 

48 

48 

48

46 

46 

44 

43 

42

40 

40 

39 

39 

39

39 

39 

39 

39 

39

45

min

52 

49

48 

47 

47

46 

46 

46 

46 

46

47 

48 

47 

48 

46

45 

44 

43 

42 

40

40 

39 

39 

39 

39

39 

39 

39 

39 

39

44

December

max

39 

39 

39 

39 

39

40 

40 

40 

40 

40

40 

39 

38 

37 

37

37 

37 

38 

38 

37

37 

37 

36 

36 

35

36 

35 

35 

35 

35 

36

38

mln

39 

39 

39 

38 

38

39 

40 

40 

40 

40

38 

38 

37 

36 

36

36 

37 

37 

37 

37

37 

36 

35 

35 

35

35 

35 

35 

35 

35 

35

37

January

max

35 

36 

36 

37 

38

38 

40 

41 

42 

42

42 

44 

43 

43 

44

43 

42 

41 

41 

40

39 

39 

38 

37 

38

38 

39 

39 

39 

39 

39

40

min

35 

35 

36 

36 

37

38 

38 

40 

41 

42

42 

42 

42 

43 

43

42 

41 

41 

40 

39

39 

38 

37 

37 

37

38 

38 

39 

39 

39 

38

39

February

max

38 

38 

39 

39 

39

39 

39 

39 

41 

41

42 

43 

45 

47 

48

49 

49 

50 

50 

50

50 

50 

51 

51 

51

51 

51 

52

45

mln

38 

38 

37 

39 

39

39 

39 

39 

39 

41

41 

41 

43 

45

47

48 

49 

49 

50 

50

50 

50 

50 

51 

51

51 

51 

51

45

March

max

52 

52 

52 

52 

52

52 

52 

52 

53 

53

54 

54 

54 

54 

53

52 

52 

51 

51 

51

52 

51 

51 

50 

48

48 

49 

50 

52 

54 

55

52

min

52 

52 

52 

52 

52

51 

52 

52 

52 

53

53 

54 

54 

53 

52

52 

51 

51 

51 

50

51 

51 

50 

48 

48

48 

48 

49 

50 

53 

54

51

April

max

55 

55 

54 

54 

54

54 

56 

56 

56 

57

58 

59 

60 

61 

61

61 

61 

61 

61 

60

59 

57 

56 

55 

54

55 

55 

57 

57 

58

57

min

55 

54 

54 

54 

54

54 

55 

56 

56 

56

57 

58 

59 

60 

61

61 

61 

61 

60 

59

57 

56 

55 

54 

54

54 

55 

57 

57 

58

57
COLORADO RIVER MAIN STEM 

COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR GRAND CANYON, ARIZ. Continued 

Suspended sediment, water year October 1956 to September 1957

165

Day

2. .....

4. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

11......

12. .....

14. .....

15. .....

17. .....

18...... 

19. ..... 

20. .....

24. ..... 

25. .....

26......

27. .....

28. .....

30. ..... 

31. .....

Total.

1...... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9...... 

10. .....

11...... 

12. ..... 

13...... 

14. ..... 

15......

16. .....

18. ..... 

19. ..... 

20. .....

21. ..... 

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27...... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

October

Mean 

discharge 

(cfs)

2,870 

2,890 

2,900 

2,930 

2,950

3,000 

3,010 

3,060 

3,080 

3,140

3,160 

3,180 

3,220 

3,200 

3,220

3,280 

3,260 

3,260 

3,310 

3,320

3,340 

3,400 

3,470 

3,530 

3,590

3,620 

3,540 

3,550 

3,550 

3,880 

4,260

101, 970

Suspended sediment

Mean 

concentration 

(ppm)

80 

41 

49 

71 

63

62 

50 

43 

48 

30

23 

53 

60 

59 

159

154 

150 

150 

155 

166

152 

164 

193 

192 

212

211 

265 

294 

317 

342 

354

--

Tons 

per 

day

620 

320 

384 

562 

502

502 

406 

355 

399 

254

196 

455 

522 

510 

1,380

1,360 

1,320 

1,320 

1,390 

1,490

1,370 

1,510 

1,810 

1,830 

2,050

2,060 

2,530 

2,820 

3,040 

3,580 

4,070

40, 917

January

3,790 

3,720 

3,760 

3,760 

3,860

4,010 

4,490 

4,610 

4,920 

4,900

5,050 

10,100 

11,200 

7,960 

6,970

6,670 

6,500 

6,260 

5,950 

5,900

6,030 

5,920 

5,600 

5,100 

4,840

4,690 

4,530 

4,840 

5,160 

5,610 

6,030

172, 750

200 

215 

200 

220 

270

290 

310 

335 

435 

440

500 

34,600 

19, 200 

7,100 

4,600

3,700 

3,300 

2,600 

2,500 

1,500

1,440 

1,230 

960 

850 

660

600 

650 

650 

600 

650 

670

-

2,050 

2,160 

2,030 

a 2, 200 

2,810

3,140 

3,760 

4,170 

5,780 

5,820

6,820 

978,000 

581, 000 

153,000 

86,600

66,600 

57,900 

44, 100 

40,200 

23,900

23,400 

19,700 

14,500 

11,700 

8,620

7,600 

7,950 

8,490 

8,360 

9,850 

10,900

2, 203, 110

November

Mean 

discharge 

(cfs)

4,680 

5,060 

5,640 

5,260 

5,000

5,170 

5,470 

5,510 

5,650 

6,000

6,270 

6,170 

6,080 

6,040 

5,790

5,650 

5,430 

5,400 

5,570 

5,660

5,800 

5,790 

5,690 

5,350 

5,220

5,340 

5,160 

4,780 

4,610 

4,450

163, 870

Suspended sediment

Mean 

concentration 

(ppm)

680 

2,110 

2,120 

1,890 

1,670

3,790 

3,280 

1,900 

1,330 

1,130

1,390 

1,780 

1,400 

1,010 

870

800 

710 

625 

615 

795

800 

700 

570 

560 

515

420 

400 

430 

375 

315

--

Tons 

per 

day

8,920 

28, 800 

32, 300 

26, 800 

22,500

52, 900 

48, 400 

28, 300 

20, 300 

18, 300

23,500 

29, 700 

23,000 

16,500 

13, 600

12,200 

10, 400 

9,110 

9,250 

12, 100

12,500 

a 11, 000 

8,760 

8,090 

7,260

6,060 

5,570 

5,550 

4,670 

3,780

520, 120

February

5,310 

5,120 

5,140 

4,880 

4,740

4,640 

4,840 

4,860 

4,740 

4,620

4,730 

4,730 

4,650 

4,690 

5,340

7,270 

8,760 

9,120 

8,660 

8,390

8,450 

8,760 

8,520 

8,260 

8,660

8,850 

10,300 

9,760

186, 790

930 

1,150 

1,250 

960 

530

350 

330 

340 

350 

350

350 

380 

1,110 

860 

1,070

3,810 

4,120 

4,000 

3,060 

3,230

3,560 

4,610 

4,900 

5,140 

4,420

3,600 

4,960 

4,820

-

13,300 

15, 900 

17,300 

12,600 

6,780

4,380 

4,310 

4,460 

4,480 

4,370

4,470 

4,850 

13,900 

10,900 

15,400

74, 800 

97,400 

98,500 

71,500 

73, 200

81, 200 

109, 000 

a 110, 000 

115, 000 

103,000

86,000 

138, 000 

127,000

1,422,000

December

Mean 

discharge 

(cfs)

4,490 

4,760 

4,880 

4,800 

4,750

4,670 

4,560 

4,540 

4,640 

4,830

4,910 

5,020 

5,100 

5,060 

4,690

4,010 

3,600 

3,820 

4,250 

4,370

4,860 

4,780 

4,620 

4,530 

4,420

4,250 

3,850 

3,820 

3,860 

3,770 

3,770

138, 280

Suspended sediment

Mean 

concentration 

(ppm)

335 

435 

475 

490 

490

475 

440 

430 

445 

410

415 

410 

390 

420 

415

390 

350 

285 

260

255

330 

415 

420 

400 

380

340 

295 

270 

245 

210 

180

-

Tons 

per 

day

4,060 

5,590 

6,260 

6,350 

a6, 300

5,990 

5,420 

5,270 

5,570 

5,350

5,500 

5,560 

5,370 

5,740 

5,260

4,220 

3,400 

2,940 

2,980 

3,010

4,330 

5,360 

a 5, 200 

a 4, 900 

a 4, 500

3,900 

3,070 

2,780 

2,550 

2,140 

1,830

140, 700

March

9,220 

8,930 

8,500 

8,400 

8,470

9,000 

9,080 

9,370 

9,560 

9,440

9,220 

8,840 

8,770 

9,080 

10,400

11,000 

10,600 

9,970 

9,460 

8,920

8,530 

8,100 

7,820 

8,000 

8,020

7,860 

7,820 

7,860 

7,680 

7,640 

7.270

272, 830

4,850 

4,050 

3,780 

3,000 

2,600

2,860 

2,550 

2,450 

2,600 

2,210

2,030 

1,780 

1,730 

1,770 

2,150

2,360 

2,510 

2,210 

2,140 

2,080

1,940 

1,940 

1,870 

1,710 

1,700

1,600 

1,550 

1,440 

1,470 

1,400 

1,420

-

121,000 

97,600 

86, 700 

68,000 

a59,000

69,500 

62,500 

62,000 

67,100 

56,300

50,500 

42,500 

41,000 

43,400 

60,400

70,100 

71,800 

59,500 

54,700 

50,100

44,700 

42,400 

39,500 

36,900 

a 37, 000

a 34, 000 

32,700 

30,600 

30,500 

28,900 

27,900

1,678,800

a Computed from estimated concentration graph.
COLORADO RIVER BASIN 

COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR GRAND CANYON, ARIZ. Continued 

Suspended sediment, water year October 1956 to September 1957 Continued

Day

1......

2. .....

3. .....

4. .....

5. .....

6. .....

7. .....

9. .....

10. .....

11......

12. .....

13. .....

16. .....

18. .....

22. .....

24. .....

27. .....

30. .....

31......

Total.

1...... 

2...... 

3...... 

4...... 

5......

8......

10...... 

11......

13. ..... 

14. ..... 

15......

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

April

Mean 

discharge 

(cfs)

7,120 

7,420 

7,940 

8,160 

8,660

8,800 

8,560 

8,420 

9,490 

9,200

8,770 

8,840 

8,800 

8,690 

9,050

9,470 

10, 700 

13, 200 

15,700 

18, 100

21, 600 

23, 200 

21, 700 

21, 600 

22, 400

24, 000 

22, 400 

20, 300 

18, 800 

18, 100

409, 190

Suspended sediment

Mean 

concentration 

(ppm)

1,260 

1,100 

1,140 

1,280 

1,500

1,640 

1,900 

1,800 

2,030 

1,810

1,460 

1,430 

1,410 

1,420 

2,110

2,020 

2,240 

3,220 

2,480 

3,900

5,800 

7,160 

7,660 

7,250 

6,210

6,230 

5,280 

4,400 

3,650 

3,220

--

Tons 

per 

day

24, 200 

22, 000 

24, 400 

28,200 

a 35, 000

39, 000 

43, 900 

40,900 

52,000 

45, 000

34, 600 

34, 100 

33, 500 

33,300 

51, 600

51, 600 

64, 700 

115, 000 

105, 000 

a 190, 000

a 340, 000 

449, 000 

449, 000 

423, 000 

376, 000

404, 000 

319, 000 

241, 000 

185, 000 

157, 000

4,411,000

July

95, 600 

98, 600 

99, 300 

98, 600 

96, 300

93, 400 

90, 500 

88, 400 

82, 800 

78, 100

76, 100 

72, 900 

68,500 

63, 100 

57, 400

54, 100 

52, 000 

49, 900 

47,500 

48, 900

48, 000 

50, 400 

49, 400 

45, 100 

41,900

40, 600 

39, 700 

40, 100 

48, 900 

60, 800 

56,300

2, 033, 200

4,600 

4,600 

4,250 

4,000 

3,800

3,750 

4,000 

3,300 

3,400 

3,000

3,000 

3,800 

4,100 

4,250 

3,500

3,100 

2,900 

5,000 

3,000 

3,800

7,100 

7,300 

4,700 

5,200 

4,000

3,000 

2,900 

2,700 

5,250 

13,000 

12,800

-

Total discharge for year (cfs-t 

Total load for year (tons) ....

1, 190, 000 

1, 220, 000 

1, 140, 000 

al, 100,000 

a 990, 000

946, 000 

977, 000 

788, 000 

760, 000 

633, 000

616, 000 

748, 000 

758, 000 

724, 000 

542, 000

453, 000 

407, 000 

674, 000 

385, 000 

502, 000

920, 000 

993, 000 

627, 000 

633, 000 

453, 000

329, 000 

311,000 

292, 000 

693, 000 

2, 130, 000 

1, 950, 000

24,884, 000

May

Mean 

discharge 

(cfs)

18, 500 

19, 200 

18, 400 

17, 200 

18, 200

21,700 

28, 800 

35, 600 

43, 200 

48, 000

51, 500 

56, 300 

58, 500 

60, 200 

59, 600

55, 700 

51, 500 

47,000 

45, 600 

45, 100

41,400 

40, 600 

44, 200 

46, 000 

44, 600

43, 200 

42, 800 

41,400 

38, 800 

37,600 

40, 600

1,261,000

Suspended sediment

Mean 

concentration 

(ppm)

3,820 

4,100 

3,540 

4,000 

3,700

4,800 

7,900 

10, 400 

12, 800 

14, 700

14, 800 

12, 800 

12, 300 

11, 800 

10, 900

9,000 

7,500 

7,250 

7,700 

6,600

6,700 

5,700 

7,200 

7,300 

9,200

6,300 

6,200 

6,400 

5,300 

5,000 

4,800

-

Tons 

per 

day

191, 000 

213,000 

176, 000 

186,000 

182, 000

281, 000 

614, 000 

1, 000, 000 

1, 490, 000 

1,910,000

2, 060, 000 

1, 950, 000 

1, 940, 000 

1, 920, 000 

1, 750, 000

1,350,000 

1, 040, 000 

920, 000 

948, 000 

804,000

749, 000 

625, 000 

859, 000 

907, 000 

1, 110,000

735, 000 

716, 000 

715,000 

555, 000 

508, 000 

526. 000

28, 930, 000

August

46, 500 

42, 300 

39, 300 

35, 600 

31, 700

31,700 

31,700 

45, 100 

40, 600 

39, 300

35,200 

29, 600 

26,500 

24, 100 

22, 400

22, 200 

21,000 

19, 900 

19, 400 

19, 600

18, 900 

19, 700 

19, 300 

23, 800 

22, 000

21,000 

18, 900 

20, 800 

17, 600 

17, 000 

20, 100

842, 800

6,800 

5,100 

3,700 

2,700 

2,500

3,200 

5,600 

27,000 

22, 500 

16, 700

16, 800 

11, 100 

9,100 

10, 100 

6,300

8,200 

8,300 

7,100 

5,800 

5,200

6,600 

9,750 

6,500 

7,100 

8,000

26,500 

27, 200 

23, 300 

17, 900 

15, 800 

15, 500

a 850, 000 

a 580, 000 

a 390, 000 

260, 000 

214,000

274,000 

479,000 

a3, 300, 000 

b2, 500, 500 

1, 770, 000

1, 600, 000 

887, 000 

651,000 

657,000 

381,000

492,000 

a 470, 000 

a 3 80, 000 

304, 000 

275, 000

337, 000 

519, 000 

339, 000 

456, 000 

475, 000

1, 500, 000 

1, 390, 000 

1,310,000 

851, 000 

725, 000 

841, 000

25, 457, 000

June

Mean 

discharge 

(cfs)

47, 000 

53, 600 

59, 600 

63, 100 

68, 500

77,400 

88,400 

98, 600 

109, 000 

115,000

120, 000 

122, 000 

124,000 

117,000 

108, 000

105, 000 

107, 000 

109, 000 

104,000 

96,300

89, 100 

88,400 

91,900 

95,600 

92, 700

84,900 

84, 900 

87, 700 

91,900 

94, 100

2,793,700

Suspended sediment

Mean 

concentration 

(ppm)

5,800 

7,300 

6,000 

7,300 

7,750

8,000 

10,000 

10,500 

10,700 

9,800

8,750 

9,200 

8,300 

7,500 

6,750

5,800 

6,000 

6,800 

5,400 

5,700

5,500 

5,200 

4,500 

4,900 

4,700

4,750 

4,300 

4,500 

4,000 

4,100

-

Tons 

per 

day

736,000 

1,060,000 

966,000 

1,240,000 

1,430,000

1,670,000 

2,390,000 

2, 800, 000 

3,150,000 

3, 040, 000

2, 840, 000 

3,030,000 

2, 780, 000 

2, 370, 000 

1, 970, 000

1,840,000 

1,730,000 

2, 000, 000 

1, 520, 000 

1, 480, 000

1,320,000 

1, 240, 000 

1, 120, 000 

1,260,000 

1,180,000

1, 090, 000 

986, 000 

1, 070, 000 

993, 000 

1, 040, 000

51, 141, 000

September

34, 100 

47, 700 

34,800 

29, 100 

25,200

21,600 

19, 200 

17,300 

15,900 

14, 900

14,000 

13, 200 

12,400 

11,800 

11,200

10,400 

9,640 

9,010 

8,720 

8,530

8,160 

7,880 

7,740 

7,640 

7,620

7,600 

7,580 

7,680 

7,690 

7,620

445,910

15,700 

31,800 

28,300 

22,800 

19,000

16,000 

12, 600 

8,250 

6,500 

5,400

4,500 

3,500 

3,500 

3,000 

2,200

1,500 

1,200 

1,200 

1,200 

1,000

850 

730 

640 

560 

540

490

450 

450 

430 

400

-

1,450,000 

4,100,000 

2,660,000 

1,790,000 

a 1,300, 000

a 930, 000 

653,000 

385, 000 

279, 000 

217,000

170, 000 

125, 000 

117, 000 

a 96, 000 

a 67, 000

42,100 

31,200 

29,200 

28,300 

23,000

18,700 

15,500 

13,400 

11,600 

11,100

10,100 

9,210 

9,330 

8,930 

8,230

14,608,900

8, 822, 290 

155,437,547

a Computed from estimated concentration graph.

b Computed from partly estimated concentration graph.
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR GRAND CANYON, ARIZ. Cont

Particle-size analyses of suspended sediment, water year October 1956 

(Methods of analyzis: B, bottom withdrawal tube; C, chemically dispersed; M

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

Oct. 29, 1956.....

Jan. 12, 1957 ....

Jan. 14 ..........

Jan. 16 ..........

Jan. 16 ..........

Feb. 18.. ........

Mar. 16 .........

Apr. 16..........

May 10 ..........

May 16 ..........

June 13 ..........

July 24 ..........

July 31 ..........

Sept. 25 .........

Time

11:30 a.m. 

10:15 a.m. 

3:00 p.m. 

3:00 p.m. 

11:15 a.m. 

4:15 p. m. 

4:00 p.m. 

4:00 p.m. 

5:15 p.m.

2:30 p.m. 

1:30 p.m. 

4:20 p.m. 

3:10 p.m. 

6:15 p.m. 

3:45 p.m. 

2:45 p.m. 

9:20 a.m. 

10:10 a.m.

11:00 a.m. 

9:40 a.m. 

11:15 a.m. 

4:00 p.m. 

1:10 p.m. 

3:10 p.m. 

10:00 a.m. 

11:00 a.m. 

5:25 p.m.

Discharge 

(cfs)

3,550 

4,740 

3,920 

8,850 

12, 800 

7,720 

6,730 

6,730 

8,820

8,960 

8,450 

10, 700 

9,520 

23, 200 

49, 700 

55, 700 

37, 500 

120, 000

123, 000 

108, 000 

88, 700 

88,400 

47, 300 

44, 200 

57, 100 

40, 600 

7,590

Water 

temperature 

<«F)

54 

39 

36 

42 

42 

44 

44 

44 

49

50 

51 

52 

61 

56 

63 

60 

64 

66

65 

66 

66 

72 

76 

76 

78 

78 

67

Suspended se

Concentration 

of sample 

(ppm)

312 

438 

232 

24, 700 

15, 900 

6,220 

3,530 

3,530 

4,090

3,980 

2,720 

2,320 

1,810 

6,680 

15, 100 

8,920 

5,000 

9,590

7,980 

6,600 

5,130 

2,790 

7,510 

4,860 

8,710 

21, 000 

543

Concentration 

of suspension 

analyzed 

(ppm)

2,960 

3,440 

3,230 

4,280 

4,360 

3,560 

3,480 

3,670 

4,670

4,440 

4,260 

4,060 

3,740 

4,860 

3,870 

4,460 

3,860 

4,770

3,620 

3,310 

3,700 

3,760 

4,150 

4,840 

4,110 

2,880 

4,010

Percent fin

0.002

61 

4

0.004

70 

67 

68 

62 

58 

64 

71 

6 

50

52 

60 

49 

57 

29 

15 

17 

25 

17

15 

17 

9 

12 

36 

40 

53 

67 

65

0.008

83 

12

0.016

96 

93 

94 

86 

80 

86 

90 

93 

77

78 

89 

71 

79 

51 

26 

26 

38 

27

20 

25 

14 

18 

60 

60 

68 

84 

88
168 COLORADO RIVER BASIN

1

3 

1

s 

I

 8

1

 1

s

01

millimet i 

1

0

1

1

u

s,

Si? SS

s 

P

of collection Dae 

«

-

0*

«

o

S

i

o

m m

1

*

1^

S

O 00

sa

o o

 

§

o 

0 

CO CO

2:00 p.m. 10:30 a.m.

S o>

It
BRIGHT ANGEL CREEK BASIN 

MISCELLANEOUS ANALYSES OF STREAMS IN BRIGHT ANGEL CRE

BRIGHT ANGEL CREEK NEAR GRAND CANYO

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 16, 1956 ....

Jan. 16, 1957. ....

Sept. 17 .........

Mean 

discharge 

(cfs)

17 

18 

18 

19 

23 

26

115 

99 

65 

23 

20 

21

Silica 

(SiO.)

Iron 

(Fe)

Calcium 

(Ca)

Magne -f 

slum 

(Mg)

Sodium 

(Na)

1

Potassium 

(K)

8

Bicarbonate 

(HCO,)

220 

228 

a 228 

228 

224 

212

154 

136 

153 

198 

196 

241

Sulfate 

(S04 )

4.7

Chloride 

(CD

4.0 

4,0 

2.5 

4.2 

3.5 

3.8

3.5 

2. 8 

2.5 

3.8 

4.0 

4.0

Fluoride 

(F)

Nitrate 

(NO,)

0.2

Boron 

(B)

a Includes equivalent of 14 parts per million of carbonate (CO,).
VIRGIN RIVER BASIN

VIRGIN RIVER AT LITTLEFIELD, ARIZ.

LOCATION. At gaging station, three-eighths of a mile downstream from Beaverdam Wash , three-eighth

and 36 miles upstream from water line of Lake Mead at elevation 1,221 feet above mean sea level. 

DRAINAGE AREA. 5,090 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: July 1949 to September 1957.

Water temperatures: October 1947 to September 1957.

Sediment records: October 1947 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 2,680 ppm Aug. 21-31; minimum, 1,270 ppm May 21-31.

Hardness: Maximum, 1,550 ppm Aug. 21-31; minimum, 675 ppm May 21-31.

Specific conductance: Maximum daily, 3,740 micromhos Oct. 25, Aug. 26; minimum daily, 1,560 micr

Water temperatures: Maximum, 89°F July 29; minimum, 45°F Dec. 10.

Sediment concentrations: Maximum daily, 85,200 ppm Aug. 21; minimum daily, 212 ppm Oct. 14.

Sediment loads: Maximum daily, 278,000 tons Aug. 21; minimum daily, 36 tons Oct. 14. 

EXTREMES, 1947-57. Dissolved solids (1949-50, 1953-57): Maximum, 2,780 ppm Aug. 1-10, 1955; minim

Hardness (1949-50, 1953-57): Maximum, 1,720 ppm Aug. 1-10, 1955; minimum, 588 ppm Apr. 19-30, 19

Specific conductance (1949-57): Maximum daily, 4,090 micromhos Oct. 5, 1955; minimum daily, 734 

Water temperatures (1949-57): Maximum, 92°F July 7, 1953; minimum, 35°F Jan. 4, 1949, Jan. 4, 19

Sediment concentrations: Maximum daily, 150,000 ppm Oct. 9, 1954; minimum daily, 110 ppm June 24

Sediment loads: Maximum daily, 1,740,000 tons Aug. 25, 1955; minimum daily, 18 tons June 24, 195

REMARKS. Records of specific conductance of daily samples available in district office at Salt Lak

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, In parts per million, water year October 1956 t

Date of collection

Oct. 1-10, 1956 ..

Jan. 1-10, 1957...

FeB. 1-10........

Feb. 21-28 ......

Mar. 21-31 ......

Mean 

discharge 

(els)

59.8 

62.8 

78.4 

90.8 

99.3 

117

117 

125 

126 

141 

242 

201

182 

224 

356 

230 

163 

97.3

Silica 

(SiOa)

25 

24 

24 

22 

22 

20

20 

20 

19 

23 

21 

20

19 

19 

17 

17 

19 

20

Iron 

(Fe)

Calcium 

(Ca)

349 

351 

375 

385 

375 

357

359 

341 

337 

309 

291 

263

263 

232 

226 

236 

261 

331

Magnesium 

(Mg)

114 

117 

113 

111 

105 

106

100 

103 

103 

96, 

73 

83

84 

75 

60 

73 

85 

106

Sodium 

(Na)

266 

262 

305 

312 

322 

305

306 

300 

297 

306 

243 

256

268 

234 

180 

228 

264 

284

Potassium 

(K)

29 

29 

29 

28 

28 

27

28 

27 

27 

29 

22 

24

24 

20 

17 

20 

23 

28

Bicarbonats 

(HCO,)

257 

269 

262 

288 

290 

317

331 

339 

350 

284 

279 

282

296 

258 

260 

280 

290 

312

Sulfate 

(SO,)

1,160 

1,150 

1,210 

1,200 

1,170 

1,100

1,070 

1,030 

1,020 

978 

838 

806

806 

710 

636 

698 

798 

1,030

Chloride 

(Cl)

375 

375 

420 

435 

442 

422

428 

412 

408 

415 

330 

360

355 

325 

240 

315 

360 

390

Fluoride 

(F)

Nitrate 

(NO,)

2.2 

2.1 

3.1 

3.5 

3.4 

3.9

4.0 

3.6 

3.0 

3.6 

3.1 

3.0

2.8 

3.6 

3.1 

2.8 

2.3 

1.9

Boron 

(B)

1.1 

1.1 

1.1 

.98 

.96 

.95

.92 

.94 

.92 

.86 

.66 

.67

.68 

.63 

.50 

.65 

.79 

.97

h 
Apr. 1-10, 1957 ..

Sept. 21-30 ......

Weighted average

67.2 

108

134

170

257

139

233

63.9

72.6

64.4

65.2

294

66.0

58.3

62.4

138

25 

23

19

20

18

18

24

23

25

26

24

22

23

22

23

26

25

25

21

345 

305

297

257

224

271

343

357

363

359

351

359

461

329

329

337

301

114 

100

85

75

60

47

73

77

106

108

97

107

103

102

97

113

109

86

264 

267

253

228

198

157

232

229

271

267

271

274

267

240

267

266

271

248

31 

29

26

24

19

15

23

22

29

30

28

30

29

29

24

30

24

256 

272

307

266

265

236

224

278

256

202

248

252

238

262

254

222

226

236

273

1,140 

952

882

764

632

501

845

957

1,150

1,160

1,160

1,150

1,150

1,140

1,370

1,150

1,130

1,140

915

380 

390

365

335

290

218

325

315

385

380

375

380

380

380

335

385

380

378

345

2.2 

3.2

3.3

3.5

1.4

4.0

3.3

4.2

2 9

1.6

2 9

1.2

2.1

2.6

2.6

2.1

2.3

3.0

.

.

.

.

.

.

.

.

1.

1.

1.

1.

1.

1.

.

1.

1.

1.

0.
172 COLORADO RIVER BASIN 

VIRGIN RIVER BASIN--Continued 

VIRGIN RIVER AT LITTLEFIELD, ARIZ . Continued 

Temperature (°F) of water, 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

Average

Oct.

71

76

69

75

76

64

67

75

77

70

73

65

61

61

60

60

73

61

64

. 61

60

60

65

56

55

58

63

62

59

56

55

65

Nov.

-.

54

52

60

56

64

64

63

56

55

55

62

59

56

55

50

55

53

53

53

51

50

52

53

59

56

59

60

59

--

56

Dec.

59

60

58

59

57

58

57

53

46

45

56

56

56

56

55

55

56

56

58

57

56

55

55

52

49

48

48

48

48

49

51

54

Jan.

58

58

59

59

60

59

57

57

54

53

58

57

60

52

50

48

50

50

53

49

53

52

54

56

55

53

51

51

48

48

47

54

Feb.

50

56

56

55

55

55

55

59

62

58

62

57

58

59

57

55

59

62

65

62

63

62

61

54

54

56

59

57

58

Mar.

61

64

62

61

57

61

67

66

61

65

63

60

54

54

56

56

56

63

65

69

61

62

62

65

67

68

75

70

68

71

60

63

Apr.

61

65

74

72

70

70

72

69

71

70

72

72

75

71

60

60

68

70

66

63

61

67

67

72

71

69

60

59

73

68

May

62

66

62

61

61

64

64

62

62

64

60

60

60

60

61

74

62

65

62

59

60

59

62

59

61

66

67

69

69

66

67

63

June

70

69

68

71

70

69

66

66

67

69

65

69

69

66

65

60

68

64

65

68

66

67

67

68

70

68

68

70

73

75

68

July

69

84

70

70

85

71

85

69

69

71

71

82

73

81

68

70

75

74

86

71

76

70

66

66

68

69

72

71

89

76

73

74

Aug.

70

70

74

72

71

71

69

65

66

68

74

81

72

72

71

86

72

71

74

74

74

71

74

73

71

72

70

69

68

65

65

71

Sept.

64

65

66

65

65

66

67

68

69

67

66

66

66

64

65

66

64

65

65

64

62

75

62

84

65

66

66

66

66

67

--

66
VIRGIN RIVER BASIN

VIRGIN RIVER BASIN Continued

VIRGIN RIVER AT LITTLEFIELD, ARIZ.--Continued

Suspended sediment, water year October 1956 to September 1957

173

Day

1. .....

2......

3. .....

4. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

11......

12. .....

13. .....

14. .....

15. ..... 

16. .....

17. .....

18. ..... 

19. .....

20......

22. .....

24. ..... 

25. .....

26......

27. .....

28. ..... 

29. .....

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

B...... 

HX .....

12. ..... 

13...... 

14...... 

15......

16. .....

18. .....

20. .....

22. ..... 

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

SO. ..... 

31. ..... 

Total.

October

Mean 

discharge 

(ds)

61 

59 

61 

59 

59

59 

59 

59 

61 

61

61 

63 

63 

63 

63

63 

63 

63 

63 

63

63 

63 

63 

75 

100

91 

82 

87 

82 

74 

82

2,088

Suspended sediment

Mean 

concentration 

(ppm)

330 

295 

308 

312

275

260 

283 

280 

290 

230

232 

278 

246 

212 

260

242 

233 

248 

248 

225

253 

450 

215 

926 

2,330

1,750 

1,210 

1,400 

1,480 

1,350 

1,340

--

Tons 

per 

day

54 

47 

51 

50 

44

41 

45 

45 

48 

38

36 

47 

42 

36

44

41 

40 

42 

42 

38

43 

77 

37 

s253 

629

430 

268 

329 

328 

270 

297

3,834

January

114 

126 

134 

134

131

134 

134 

153 

183 

166

158 

161 

340 

550 

272

238 

177 

194 

158 

169

174 

177 

180 

177 

197

238 

272 

238 

200 

183 

177

6,039

1,520 

1,820 

2,020 

2,060 

2,070

2,260 

2,450 

3,100 

4,400 

4,000

3,500 

3,700 

11,000 

21,000 

7,300

5,500 

3,700 

3,200 

3,100 

2,990

3,550 

3,300 

2,690 

2,680 

3,780

3,800 

4,320 

4,200 

4,000 

2,540 

3,200

--

468 

619 

731 

745 

732

818 

886 

1,280 

2,170 

1,790

1,490 

1,610 

s 18, 700 

835,400 

5,360

3,530 

1,770 

1,680 

1,320 

1,360

1,670 

1,580 

1,310 

1,280 

2,010

2,440 

3,170 

2,700 

2,160 

1,260 

1,530

103, 569

November

Mean 

discharge 

(cfs)

78 

91 

100 

98 

96

89 

89 

91 

89 

87

89 

87 

80 

82 

100

117 

102 

100 

102 

134

126 

131 

136 

117 

100

107 

114 

119 

110 

112

3,073

Suspended sediment

Mean 

concentration 

(ppm)

1,300 

1,170 

1,230 

2,910 

1,430

1,430 

1,270 

1,360 

1,480 

1,380

1,520 

1,350 

990 

1,150 

1,880

2,150 

1,800 

1,670 

1,720 

2,030

4,010 

2,550 

2,550 

2,630 

1,790

1,560 

2,600 

2,350 

1,480 

1,470

-

Tons 

per 

day

a 270 

287 

332 

770 

371

344 

305 

334 

356 

324

365 

317 

214 

255 

508

679 

496 

451 

474 

734

sl,360 

902 

936 

831 

483

451 

800 

755 

440 

445

.15,589

v February

117 

180 

183 

186 

180

177 

171 

177 

186 

206

222 

213 

235 

235 

222

238 

200 

197 

197 

281

389 

325 

213 

902 

334

259 

222 

200

6,907

2,720 

2,450 

2,800 

2,700 

2,520

2,690 

2,590 

2,650 

3,000 

3,390

3,230 

3,160 

3,500 

3,980 

3,750

3,800 

3,570 

2,850 

2,900 

5,110

6,770 

6,760 

4,300 

30, 700 

6,200

4,000 

3,050 

2,810

--

1,300 

1,190 

1,380 

1,360 

1,220

1,290 

1,200 

1,270 

1,510 

1,890

1,940 

1,820 

2,220 

2,530 

2,250

2,440 

1,930 

1,520 

1,540 

s4,920

87,570 

86,160 

2,470 

s 92, 500 

s7,490

2,800 

1,830 

1,520

159,060

December

Mean 

discharge

(cfs)

117 

110 

119 

129 

126

122 

122 

124 

102 

98

114 

134 

136 

136 

136

124 

129 

122 

112 

105

107 

105 

107 

143 

134

141 

134 

131 

134 

129 

124

3,806

Suspended sediment

Mean 

concentration 

(ppm)

1,620 

1,370 

1,620 

1,720 

1,700

1,640 

1,620 

1,730 

1,670 

1,450

1,330 

1,900 

2,180 

2,390 

2,360

2,080 

1,970 

1,790 

1,420 

1,320

1,350 

1,350 

1,310 

2,020 

2,080

2,190 

2,140 

2,020 

2,040 

1,920 

1,720

-

Tons 

per 

day

512 

407 

521 

599 

578

540 

534 

579 

460 

384

409 

687 

800 

878 

867

696 

686 

590 

429 

374

390 

383 

378 

780 

753

834 

774 

714 

738 

669 

576

18,519

March

203 

225 

269 

360 

232

219 

203 

191 

197 

197

191 

186 

180 

164 

169

161 

153 

156 

143 

129

126 

126 

129 

117 

117

105 

78 

68 

68 

68 

68

4,998

2,400 

3,210 

5,000 

7,740 

2,450

2,100 

2,080 

2,100 

1,970 

1,950

2,140 

2,200 

1,970 

1,940 

1,700

1,470 

1,410 

1,450 

1,380 

1,240

1,350 

1,610 

1,580 

1,540 

1,700

1,150 

800 

720 

620 

620 

730

"

1,320 

2,360 

3,630 

s8, 280 

1,530

1,240 

,140 

,080 

,050 

,040

,100 

,100 

957 

859 

a 780

839 

582 

611 

533 

432

459 

548 

550 

486 

537

326 

168 

132 

114 

114 

134

33,831

a Computed by subdividing day.

a Computed from estimated concentration graph.
174 COLORADO RIVER BASIN

VIRGIN RIVER BASIN Continued

VIRGIN RIVER AT LITTLEFIELD, ARIZ. Continued

Suspended sediment, water year October 1956 to September 1957 Continued

Day

1. .....

3. .....

4. .....

6. .....

7. .....

8. .....

9. .....

10. .....

11......

12. .....

14. .....

15. .....

16. .....

18. .....

19. .....

21......

24. ..... 

25. .....

26......

28. ..... 

29. .....

31...... 

Total.

1...... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9...... 

10. .....

13. ..... 

14. ..... 

15......

16. .....

19. ..... 

20. .....

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

April

Mean 

discharge 

(cfs)

68 

68 

70 

68 

68

63 

63 

63 

76 

65

61 

82 

102 

112 

134

117 

117 

107 

136 

112

98 

110 

132 

294 

151

138 

110 

100 

102 

105

3,092

Suspended sediment

Mean 

concentration 

(ppm)

715 

590 

565 

525 

485

515 

490 

575 

780 

665

525 

1,230 

1,800 

1,700 

1,600

1,600 

2,000 

1,650 

2,170 

1,800

1,560 

1,520 

3,530 

5,600 

2,400

1,560 

1,730 

1,100 

1,500 

1,810

-

Tons 

per 

day

131 

108 

107 

96 

89

88 

83 

98 

160 

117

86 

272 

496 

514 

a 580

505 

637 

477 

797 

544

413 

451 

si, 430 

4,450 

978

581 

514 

297 

413 

513

16,020

July

64 

64 

67 

62 

59

59 

59 

57 

57 

57

62 

88 

124 

69 

57

57 

64 

79 

64 

62

62 

62 

62 

62 

62

64 

69 

67 

67 

67 

64

2,039

620 

520 

650 

585 

585

580 

600 

645 

750 

220

875 

14,200 

23,700 

6,750 

5,750

1,000 

815 

5,300 

1,100 

715

615 

840 

1,120 

760 

715

655 

620 

515 

382 

383 

495

--

Total discharge for year (cfsTotal load for year (tons)

104 

90 

118 

98 

93

92 

96 

99 

115 

34

146 

s4,940 

7,930 

1,260 

885

154 

141 

1,130 

190 

120

103 

141 

187 

127 

120

113 

116 

-93 

69 

69 

86

19,062

May

Mean 

discharge 

(cfs)

85 

76 

93 

131 

158

197 

209 

259 

266 

225

322 

356 

308 

249 

216

186 

188 

158 

164 

426

328 

298 

294 

450 

362

311 

301 

258 

281 

277 

251

7,683

Suspended sediment

Mean 

concentration 

(ppm)

1,310 

1,230 

2,000 

2,320 

2,700

3,170 

3,650 

4,130 

4,300 

4,300

4,070 

5,230 

3,690 

3,200 

2,500

2,500 

2,750 

2,170 

2,600 

8,200

7,300 

5,200 

5,260 

8,780 

5,140

3,600 

3,440 

3,000 

3,500 

3,330 

3,300

-

Tons 

per 

day

301 

252 

a 500 

821 

1,150

1,690 

2,060 

2,890 

3,090 

2,610

3,540 

5,030 

3,070 

2,150 

1,460

1,260 

1,400 

926 

1,150 

s 10, 700

6,460 

4,180 

s4,800 

s 10, 800 

5,020

3,020 

2,800 

2,090 

2,660 

2,490 

2,240

92,610

August

64 

67 

67 

67 

67

64 

64 

64 

64 

64

64 

64 

64 

64 

62

64 

64 

64 

67 

93

1,030 

1,120 

247 

122 

87

250 

98 

71 

69 

67 

69

4,552

640 

270 

720 

320 

530

568 

590 

520 

635 

518

485 

440 

490 

460 

523

507 

440 

760 

1,450 

27,500

85,200 

54,600 

15,400 

8,000 

2,790

20,500 

5,000 

1,200 

660 

950 

880

111 49 

130 

58 

96

98 

102 

90 

110 

90

84 

76 

85 

79 

88

88 

76 

131 

262 

s 10, 000

3278,000 

s 201, 000 

s 11, 200 

2,640 

s846

315,000 

1,320 

230 

123 

172 

164

522, 598

June

Mean 

discharge 

(cfs)

216 

210 

171 

151 

124

94 

88 

64 

57 

213

1,080 

356 

200 

156 

127

106 

96 

81 

69 

62

62 

64 

62 

64 

64

64 

64 

67 

64 

64

4,360

Suspended sediment

Mean 

concentration 

(ppm)

2,810 

3,200 

2,140 

1,720 

1,580

1,400 

1,370 

1,150 

880 

7,490

48,000 

10,900 

4,600 

2,350 

1,720

1,410 

1,760 

1,050 

1,000 

815

800 

765 

825 

1,030 

845

1,040 

735 

665 

630 

845

-

Tons 

per 

day

1,640 

1,810 

988 

701 

529

355 

326 

199 

135 

s 20, 600

s 155, 000 

s 11, 200 

2,480 

990 

590

404 

456 

230 

186 

136

134 

132 

138 

178 

146

180 

127 

120 

109 

146

200,365

September

69 

67 

64 

67 

67

64 

67 

84 

67 

64

62 

59 

57 

59 

59

59

57 

57 

57 

57

57 

57 

57 

59 

62

67 

67 

67 

67 

84

1,867

950 

685 

865 

790 

680

630 

790 

725 

725 

490

550 

650 

575 

630 

685

525 

510 

735 

815 

470

575 

710 

625 

470 

615

485 

510 

400 

400 

405

--

177 

124 

149 

143 

123

109 

143 

125 

131 

85

92 

104 

88 

100 

109

84 

78 

113 

125 

72

88 

109 

96 

75 

103

88 

92 

72 

72 

70

3,139

50,504 

1,188,196

s Computed by subdividing day.

a Computed from estimated concentration graph.
VIRGIN RIVER BASIN Continued 

VIRGIN RIVER AT LITTLEFIELD, ARIZ. Continu

Particle-size analyses of suspended sediment, water year October 1956 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

N, In native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

Oct. 30, 1956....

Nov. 29 .........

Jan. 14, 1957 ... 

Jan. 15 .........

Feb. 15 .........

Feb. 24 .........

Apr. 24 .........

Apr. 30 .........

May 20 ..........

Aug. 2L.........

Aug. 21 .........

Aug. 21 .........

Aug. 22 ........

Aug. 26 .........

Time

7:30 a. m. 

12:00 m. 

5:00 p.m. 

5:30 p. m. 

8:15 a. m. 

7:30 a.m.

8:00 a. m. 

9:00 a. m. 

8:30 a. m. 

8:00 a. m. 

5:30 p. m. 

5:30 p. m.

6:00 p. m. 

6:30 a.m. 

5:00 p. m. 

11:00 a. m. 

3:00 p.m. 

7:30 a.m.

5:30 a. m. 

7*0 a. m. 

11:00 a.m. 

3:30 p.m. 

7:15 a. m. 

7:15 a.m.

Discharge 

(cfs)

74 

117 

110 

131 

114 

631

269 

180 

213 

1,160 

124 

346

107 

216 

308 

641 

550 

291

1,120 

235 

1,750 

3,080 

1,350 

328

Water 

temperature 

(°F)

56 

55 

60 

55 

51 

52

50 

48 

57 

54 

68 

67

73 

64 

68 

60 

66 

67

65 

74 

74 

74 

71 

72

Suspended se

Concentration 

of sample 

(ppm)

1,170 

1,980 

1,350 

2,300 

1,660 

25,700

7,500 

2,410 

3,260 

43,800 

1,580 

5,140

1,770 

3,200 

3,520 

13,200 

10,800 

3,520

44,800 

83,000 

107,000 

96,300 

54,800 

22, 600

Concentration 

of suspension 

analyzed 

(ppm)

2,860 

3,940 

5,020 

4,230 

3,100

3,530 

3,410 

4,560 

3,400 

2,600 

4,090

5,050 

3,340 

4,760 

4,230 

3,140 

4,350

4,580 

4,370 

5,640 

4,780 

3,310 

3,530

Percent fin

0.002 0.004

49 

36 

24 

18 

16

28 

13 

21 

21 

23 

20

21 

30 

13 

12 

17 

20

34 

46 

29 

13 

33 

52

0.008 0.016

75 

65 

42 

35 

25

44 

19 

31 

35 

30 

30

32 

43 

21 

22 

28 

29

52 

89 

60 

29 

54 

83
COLORADO RIVER MAIN STEM 

LAKE MEAD NEAR BOULDER CITY, NEV.

_ Chemical analyses, in parts per million, water year October 1956 to 

/The miles given below represent distances measured along the Colorado River downstream from the gaging station at Lees Ferry, 

of the water/

Date of collection

Depth 

(feet)

Elevation 

(feet)

Temperature

Silica 

(Si02 )

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium and

potassium

(Na+K)

Bicarbonate 

(HCO,)

S

(

AT LINE OF DEMARCATION BETWEEN TURBID AND CLEAR WATER, 

Apr. 9, 1957......... 0 1,091 59.0 9.2 91 36 145 208 

	ICEBERG CANYON, MILE 287.5

Apr. 9, 1957......... 5 1,086 60.3 -- ~ 2ls

Apr. 9............... 25 1,066 58.6 16 98 37 158 216 

Apr. 9............... 37 1,054 58.0 -- 210

Apr. 9............... 39 1,052 14 86 58 156 311 

	SANDY POINT, MILE 293.5

Apr. 9, 1957... ...... 5 1,086 60.1 -- 201

Apr. 9............... 25 1,066 59.1 10 96 34 139 200 

Apr. 9.... ........... 50 1,041 58.3 11 91 36 135 195 

Apr. 9............... 100 991 57.7 200

Apr. 9............... 126 965 56.0 -- -- 202

Apr. 9............... 128 963 16 117 39 145 336____ 

	VIRGIN CANYON, MILE 305.5

Apr. 9, 1957......... 5 1,086 61.0 ~ ~~ 177 

Apr. 9............... 50 1,041 58.0 43 75 36 122 166 

Apr. 9............... 100 991 57.0 -- -- 191

Apr. 9............... 150 941 56.0 9.9 71 47 134 197 

Apr. 9............... 200 891 53.0 -- -- 192

Apr. 9............... 230 861 53.0 10 80 42 123 187 

Apr. 9.......... ..... 234 857 53.0 -- 189

Apr. 9............... 236 855 13 76 54 129 255 

OVERTON ARM OF LAKE AT LINE OF DEMARCATION BETWEEN TURBID AND CLEAR WATER, 27 

Apr. 10, 1957........ 0 I 1,091 79.0 14 | 91 | 59 | 136 167 
OVERTON ARM OF LAKE, 9.3 MILES ABOVE MOUTH OF VIRGIN RIVER (LO

Apr. 10, 1957........

Apr. 10 .............

5

196

ROA

895

..

10

17

_

72

_

42 107

168

165

183

BOULDER CANYON, MILE 334

Apr. 11, 1957........

Apr. 11 .............

Apr. 11 .............

Apr. 11 .............

Apr. 11 .............

5

327

1,041

991

791

764

61.7

57.5

CO 0

14

14

89

96

43

36

106

119

119

169

186

166

188

226

NEAR INTAKE TOWERS, MILE 354.7

Oct. ...............

Oct. ...............

Oct. ...............

5

150

1,101

956

806

79«

59.7

33

138

183

184

176

181

184
COLORADO RIVER MAIN STEM Continued

LAKE MEAD NEAR BOULDER CITY, NEV.--Continue

Chemical analyses, in parts per million, water year October 1956 to Septem

Date of collection

Depth 

(feet)

Elevation 

(feet)

Temperature 

(°F)

Silica 

(Si02 )

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium and 

potassium

(Na+K)

Bicarbonate 

(HC03 )

Sul

(SO

NEAR INTAKE TOWERS, MILE 354.7 Continued

Oct. 31, 1956 ........

Oct. 31..............

Dec. 28 .............

5 

50 

100 

150 

200 

250 

300 

350 

378 

380

5 

50 

100 

150 

160 

200 

250 

300 

350 

375 

377

5

50 

100 

150 

160 

200 

250 

300 

350 

373 

375

1,097 

1,052 

1,002 

992 

902 

852 

802 

752 

724 

722

1,094 

1,049 

999 

949 

939 

899 

849 

799 

749 

724 

722

1,092 

1,047 

997 

947 

937 

897 

847 

797 

747 

724 

722

69.5 

69.3 

69.1 

67.7 

59.0 

54.1 

53.7 

53.5 

53.5 

53.5

62.3 

61.7 

61.7 

61.7 

60.9 

54.9 

53.4 

53.2 

53.1 

53.1 

53.1

56.7 

56.7 

56.5 

56.4 

56.3 

55.7 

53.6 

53.4 

53.3 

53.3 

53.5

12

11 

16 

14

17 

11

12 

9.5

11 

11

14 

9.4

11 

17

85

105 

97 

108

82 

82

82 

95

90 

74

74 

79

79 

110

27

31 

30 

32

28 

29

33 

39

42 

37

36 

46

49 

36

89

89 

119 

129

102 

92

101 

118

117 

100

100 

118

121 

125

149 

151 

155 

191 

157 

180 

167 

179 

188 

257

153 

147 

150 

149 

155 

176 

177 

174 

174 

184 

310

156 

157 

156 

156 

156 

174 

178 

180 

178 

187 

276

2

3

3

3

2

2

2

3

3

2

2

3

3

3
COLORADO RIVER MAIN STEM 179

) O O O O O O O OOOOOOOOOOO OOOOOOOOOO

I C- C- I I O I CO

I 0> O t I -H I r-t

I I I ,-H I I I O CD O I I O I O> I I IOOC- t O I CD i-t 1 liniCD

mooomoooo,-«eQ moooooooooca moooooooooo

o> ;:;;;::::: :::; i ::;:;: ;;;;:; i ;;;

0)0)0)0)0)0)0)0)0)0)0) CLCLQ-Q.Q-Q-Q-Q.Q-Q- '
COLORADO RIVER MAIN STEM Continued 

LAKE MEAD NEAR BOULDER CITY, NEV. Continu

Chemical analyses, in parts per million, water year October 1956 to Septe

Date of collection

Depth 

(feet)

Elevation 

(feet)

Temperature 

(°F)

Silica 

(Si02 )

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium and 

potassium 

(Na+K)

Bicarbonate 

(HCO,)

S

NEAR INTAKE TOWERS, MILE 354.7 Continue

Apr. 30 .............

July 1 ...............

17 n

i nn

QC

I

ftrtQ

i nn9

Qcn

64.6

CQ a

CO Q

71 ft

1 R

99

QC

95

34

23

 >ft

119

_

QQ

168

174

215
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER BELOW HOOVER DAM, ARIZ.-NEV

LOCATION. At Hoover Dam, on state line between Mohave County, Ariz., and Clark County, Nev., about 1 m

DRAINAGE AREA. 167,800 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: October 1939 to September 1957.

Water temperatures: October 1941 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 857 ppm Oct. 1-10; minimum, 750 ppm Sept. 3, 16.

Hardness: Maximum, 400 ppm Oct. 1-10, 11-20; minimum, 354 ppm Aug. 1, 15.

Specific conductance: Maximum daily, 1,280 micromhos Oct. 18, 19; minimum daily, 1,090 micromhos 

EXTREMES, 1939-57. Dissolved solids: Maximum, 884 ppm July 21-31, 1956; minimum, 477 ppm Nov. 21, 

Hardness (1939-44, 1950-57): Maximum, 426 ppm Jan. 21-31, 1941; minimum, 241 ppm Nov. 21, 24-26, 

Specific conductance: Maximum daily, 1,580 micromhos June 20, 1955; minimum daily, 712 micromhos 

rfater temperatures (1941-50): Maximum, 69°F Sept. 27, 1945 and several days in 1947 and 1948; min

REMARKS. Records of specific conductance of daily samples available in district office at Salt Lake 

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, In parts per million, water year October 1956 to 

Oat* of collection

Oct. 1-10, 1956...... 

Oct. 11-20..........

Nov. 21-30. .........

Dec. 21-31. .........

Jan. 1-10, 1957 .....

Jan. 21-28..........

Jan. 29-31, Feb. 1-10 

Feb. 11-20. .........

Mar. 1-10 ..........

Mar. 11-20 ......... 

Mar. 21-31 .........

Aor. 11-20..........

Mean 

discharge 

(cfs)

7,750 

7,393 

8,675 

9,411 

9,728

8,798 

7,944 

7,951 

6,507 

8,708

7,814 

9,396 

7,698 

9,918 

8,351

10,400 

11, 960 

13, 530 

14, 340 

14. 880

Silica 

(SiO.)

13

11

11 

11 

11 

11

11

11 

12

Iron 

(Fe)

0.01

.00 

.01

Calcium 

(Ca)

103 

106 

104 

98 

85

89 

88 

80 

79 

82

96 

97 

96 

99 

99

99 

78 

99 

100 

100

Magnesium 

(Mg)

35 

33 

33 

36 

41

37 

41 

41 

41 

41

29 

29 

30 

31 

32

34 

45 

30 

30 

30

Sodiurn 

(Na)

120 

122 

120 

119 

112

114 

112 

107 

107 

109

110 

112 

108 

111 

113

115 

116 

114 

114 

114

Potassium 

(K)

5.4

4.6 

5.1

Bicarbonate 

(HCO,)

174 

175 

174 

176 

169

166 

172 

165 

161 

165

165 

166 

168 

170 

152

174 

176 

176 

175 

176

Carbonate 

(CO,)

Sulfate 

(S04)

352

343

335 

351 

327 

323 

321

308 

327

Chloride 

(Cl)

105

98

96 

98 

95 

95 

98

94 

104

Fluoride 

(F)

0.3 

.3

.2 

.3

Nitrate 

(NO,)

4.1 

4.1

4.3

4.3 

4.1 

3.9 

4.1 

4.0

3.9 

3.4

B

r

(

0
COLORADO RIVER BASIN

a 2

v s

X 

a.

31 S § «p

ag "jsf «

o 1 o J 3

1

Hardness I CaCO,s

 0

Dissolved 

(residue 1at 

| of

i| 5

Calcium, mag- nesium

Pi

1*51

1 |=! I

SSS

* II

l!s

111

ill*

, jj-s 

ol§

ill"

*i|s

ill

»

s

C

 1!

"oH

o'*

I!

Ii|i

I

1 s

 wmmm mmmi'iN CMCM

SSSSS 2SS3S S3

» » « U> « «««.»,» in .

CM CM CM IN IN CM IN CM CM CM CMCM

SSSSS S5SSSS S£

sisBci ^cfciB HI

H!H HSK SS

SmSSS S£oSS? SS

sssss °ssss °°

SSSSS ggggg gs

SSSSe SETS?? £S

i!SI! 2ISSS S3

0

: : : : : : i : ~ i : i

c>

i ; : i : : : is : : :

11111 ' ; ! s ! ! '

CDm^CMO -H-mmCM CM11111 ' ' ' S ! ! ;

i-t^-i^-iOO OOOOO OO

mSSSS SS3S3 SS

ssss§ sssss ss

1 i 1 1 1 1 1 1 0 I ll 

1 1 i 1 1 1 1 i O I ll

o

: : : : : i i : a i i :

ll^l Illli 11

mmoncM *'*iNmiN « *

t- ..... . .

artrtrtS SS 1^^^ % %?

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s

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s

1

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1

i

1

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i

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S3

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1

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o"

i 1 o

1

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tto

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1

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Weighted average. .

£1

a

01

_0

1O

S

0

So

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2 a> 

t|

3 t tS 3.

°K

d

Tl

iiH« 0>

o.S

II

rcent ofrued data for

82 Represents a pc

Includes bestimat
COLORADO RIVER MAIN STEM 

COLORADO RIVER MAIN STEM Continued

COLORADO RIVER BELOW HOOVER DAM, ARIZ.-NEV. Continued 

Temperature (°F) of water, 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

Average

Oct.

56

56

56

56

56

_

56

56

56

56

56

_

56

56

56

56

56

_

56

56

56

56

58

58

58

58

Nov.

57

58

..

_

58

58

58

58

58

--

..

._

58

58

58

58

_

_

61

59

59

_

59

_

--

59

59

59

59

58

--

Dec.

_.

_

58

56

57

57

58

__

58

58

58

58

58

--

_.

58

58

58

58

58

_

_

_

--

58

58

58

_

._

58

Jan.

..

56

56

56

--

..

56

56

56

56

56

_.

__

56

56

56

56

56

--

56

55

55

55

55

_

55

55

55

55

Feb.

55

..

..

55

55

55

55

55

_.

--

54

54

54

54

54

_

54

54

54

54

_.

_

_

54

54

54

54

_

--

Mar.

54

__

_.

54

54

54

54

54

__

--

54

54

54

54

54

_

54

54

54

54

54

_

..

54

54

54

54

54

Apr.

54

55

54

54

54

..

_

54

54

54

54

54

__

54

54

54

54

54

..

54

54

55

55

55

_

55

55

May

55

55

55

_

--

55

55

55

55

55

..

_

55

55

55

55

55

__

_

56

54

55

55

55

-

_

55

55

55

_

55

June

..

_

55

55

56

56

56

_

_

56

56

56

56

56

-

56

56

56

56

56

_

_

56

56

56

56

56

_.

July

56

56

56

.-

56

_

_.

56

57

56

57

56

_.

56

56

56

57

57

--

_

56

56

56

56

56

--

..

57

57

57

Aug.

56

_-

--

--

"

..

._

_

-

..

56

..

--

--

_.

_.

-.

--

_

--

Sept.

__

-_

58

_

--

-_

--

_

-.

-

58

-.

--

"

_

-.

--

..

-.

--
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER NEAR TOPOCK, ARIZ.

LOCATION. Temperature recorder at gaging station, in Mohave Canyon, 2.7 miles downstream from 

Dam, and 49 miles downstream from Davis Dam. 

DRAINAGE AREA. 172,300 square miles, approximately. 

RECORDS AVAILABLE. Water temperatures: July 1952 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 77°F Aug. 23, 24; minimum, 47°F Dec. 10, Jan 

EXTREMES, 1952-57. Water temperatures: Maximum, 78°F July 25, 1956; minimum, 46°F Feb. 3, 4, 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1513

Temperature (°F) of water, water year October 1956_to Se

/Continuous-recording thermograph/

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...................

October

max

71 

69 

69 

70 

71

71 

69 

68 

68 

67

67 

67 

66 

66 

66

66 

67 

67 

 67 

68

67 

67 

67 

67 

62

63 

64 

64 

63 

62 

62

67

mln

68 

68 

68 

69 

70

69 

68 

67 

67 

67

67 

66 

65 

65 

66

66 

66 

67 

67 

67

67 

67 

67 

62 

61

62 

63 

63 

62 

62 

62

66

November

max

62 

61 

60 

58 

59

61 

62 

62 

62 

62

61 

61 

61 

60

57

57 

57 

58 

58 

54

53 

54 

55 

56 

56

56 

56 

55 

55 

55

58

min

61 

60 

58 

57 

58

59 

61 

61 

61 

61

61 

61 

61 

57 

56

56 

56 

57 

54 

52

52 

52 

54 

55 

56

56 

55 

54 

54 

54

57

December

max

55 

55 

54 

54 

55

55 

55 

54 

49 

48

51 

51 

52 

53 

52

52 

52 

51 

51 

51

51 

51 

48 

49 

49

50 

50 

50 

50 

50 

50

52

min

55 

54 

54 

54 

54

55 

54 

49 

48 

47

48 

51 

51 

52 

52

52 

51 

51 

51 

51

51 

48 

48 

48 

49

49 

49 

50 

50 

50 

50

51

January

max

50 

50 

50 

51 

52

52 

52 

52 

52 

51

51 

52 

52 

54 

53

52 

52 

49 

50 

50

50 

51 

50 

52 

51

52 

51 

50 

49 

48 

50

51

mln

50 

50 

50 

50 

51

52 

52 

51 

51 

50

50 

51 

52 

52 

52

51 

49 

47 

48 

49

49 

50 

50 

50 

51

51 

50 

49 

48 

47 

48

50

February

max

50 

51 

51 

52 

52

52 

51 

54 

55 

55

56

57 

57 

57 

57

56 

58 

60 

58

57

57 

56 

57 

56 

56

57 

57 

57

55

min

49 

50 

50 

51 

51

51 

51 

51 

53 

54

54 

55 

55 

56 

56

55 

56 

57 

56 

56

56 

56 

55 

55 

55

56 

56 

56

54

March

max

57 

57 

58 

59 

58

58 

59 

60 

60 

58

58 

59 

58

57 

57

59 

57 

58 

60 

59

61 

60 

56 

57 

58

60 

59 

61 

58 

60 

61

59

min

57 

56 

57 

58 

57

58 

58 

59 

58

57

58 

58 

57 

56 

56

57 

56 

57 

58 

58

59 

56 

56 

56

57

58 

58 

58 

58 

58 

60

57

April

max

61 

59 

60 

62 

63

64 

63 

62 

62 

64

64 

64 

63 

64 

64

64 

63 

63 

62 

63

61 

59 

61 

64 

65

65 

65 

64 

65 

66

63

min

58 

57 

57 

61 

61

62 

61 

61 

61 

62

62 

62 

62 

62 

62

61 

61 

61 

61 

61

59 

59 

59 

62 

63

64 

64 

64 

64 

64

61
COLORADO RIVER MAIN STEM Continued

COLORADO RIVER BELOW PARKER DAM, ARIZ.-CA

LOCATION. Temperature recorder at gaging station, 3.9 miles downstream from Parker Dam, 10.4 m

northeast of Parker, Yuma County, Ariz. 

DRAINAGE AREA. 178,800 square miles, approximately.

RECORDS AVAILABLE. Water temperatures: February 1954 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 82'F Aug. 22, 23; minimum, 50°F Jan. 31.

EXTREMES, 1954-57. Water temperatures: Maximum, 83°F Aug. 12, 13, 18, 1955; minimum, 48°F Jan

REMARKS. Records of discharge for wster year October 1956 to September 1957 given in WSP 1513.

Temperature (°F) of water, water year October 1956 to Sep

Day

2. ..................

4. ..................

5...................

6. ..................

7...................

8. ..................

9. ..................

10. ..................

12...................

13. ..................

14. ..................

15...................

16. ..................

17. ..................

18. ..................

19. ..................

20. ..................

21...................

22. ..................

23. ..................

24. ..................

25. ..................

26. ..................

27...................

28. ..................

29...................

30...................

31...................

Average .......

October

max

77 

77 

77 

77 

76

76 

76 

76 

77 

77

76 

75 

75 

75 

75

75 

75 

75 

74 

74

74 

74 

74 

73 

72

71 

71 

71 

70 

70 

69

74

mln

77 

77 

76 

76 

75

76 

76 

75 

76 

76

75 

75 

75 

75 

75 

75 

74 

74 

74 

73

74 

73 

73 

72 

71

71 

70 

70 

70 

69 

69

74

November

max

69 

68 

67 

68 

66

65 

65 

65 

65 

65

65 

65 

64 

64 

63

62 

62 

62 

61 

66

59 

59 

58 

58 

58

58 

58 

58 

57 

57

62

min

68 

67 

66 

65 

65

65 

65 

65 

64 

64

64 

64 

64 

63 

62

62 

61 

61 

60 

59

59 

58 

58 

58 

58

58 

57 

57 

57 

57

62

December

max

57 

57 

57 

57 

57

55 

55 

55 

54 

53

53 

53 

53 

53 

53

53 

53 

53 

52 

52

52 

52 

51 

51 

51

51 

51 

51 

51 

51 

51

53

min

57 

57 

57 

56 

55

55 

55 

54 

53 

53

53 

53 

53 

53 

53

53 

53 

52 

52 

52

52 

51 

51 

51 

51

51 

51 

51 

51 

51 

51

53

January

max

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

52 

51

52 

51 

51 

51 

51

51 

51 

51 

51 

51 

51 

51 

51 

51 

51 

51

52

min

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51 

50

51

February

max

51 

51 

51 

51 

51

51 

51 

52 

52 

52

52 

53 

54 

55 

54

55 

55 

55 

54 

53

54 

55 

54 

55 

56

58 

57 

58

54

min

51 

51 

51 

51 

51

51 

51 

51 

52 

52

52 

52 

53 

54 

54

54 

55 

54 

53 

53

53 

54 

54 

54 

54

56 

57 

57

53

March

max

58 

58 

58 

58 

58

59 

61 

61 

61 

60

61 

60 

61 

62 

62

62 

61 

61 

61 

61

61 

61 

61 

61 

61

61 

61 

61 

61 

61 

61

60

min

57 

58 

58 

58 

58

58 

59 

60 

60 

60

60 

60 

60 

61 

62

61 

61 

61 

61 

61

61 

61 

60 

60 

60

60 

61 

61 

61 

60 

61

60

April

max

61 

61 

61 

61 

62

62 

61 

62 

63 

63

63 

63 

63 

63 

64

64 

64 

64 

66 

66

65 

65 

65 

65 

65

67 

67 

67 

67 

67

64

min

61 

61 

61 

61 

61

61 

61 

61 

62 

62

62 

62 

62 

63 

63 

64 

63 

64 

64 

65

65 

65 

65 

65 

65

65 

67 

67 

67 

67

63
COLORADO RIVER MAIN STEM--Continued 

COLORADO RIVER BELOW PALO VERDE DAM, ARIZ.-CA

LOCATION. Temperature recorder at gaging station, 1.4 miles downstream from Palo Verde Canal i

and 11.0 miles upstream from Ehrenberg, Yuma County, Ariz. 

DRAINAGE AREA. 182,200 square miles, approximately.

RECORDS AVAILABLE.--Water temperatures: April 1956 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 87°F July 13, 31.

EXTREMES, April 1956 to September 1957. Water temperatures: Maximum, 87 °F July 13, 31, 1957 

REMARKS. Thermograph installed April 3, 1956. Recorder not operative from Nov. 15 to Feb. 13. 

September 1957 given in WSP 1513.

Temperature (°F) of water, April to September 19

/Continuous-recording thermograph?

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. ..................

Average .......

October

max min

November

max min

December

max min

January

max min

February

max min

March

max min

April

max

58 

59 

62 

64

64 

65 

66 

65 

66

65 

65 

64 

64 

64

64 

66 

66 

66 

66

67 

68 

69 

68 

67

66 

65 

65 

66 

67

-

min

58 

58 

62

63 

64 

62 

63 

63

61 

61 

60 

60 

59

60 

63 

62 

62 

62

62 

64 

64 

65 

64

61 

62 

61 

62 

64

-
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER BELOW PALO VERDE DAM, ARIZ.-CALI

Temperature (T) of water, water year October 1956 to Septe

/Continuous-recording thermograph/

Day

2. ..................

4. ..................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

12...................

13...................

14...................

15...................

16...................

17...................

18...................

19...................

20. ..................

21.. .................

22. ..................

23...................

24. ..................

25...................

26...................

27. ..................

28. ..................

29. ..................

30. ..................

31. .................. 

Average .......

October

max

81 

80 

80 

81 

79

78 

76 

76 

76 

75

74 

74 

74 

73 

72

72 

72 

72 

71 

70

69 

68 

67 

66 

64

64 

64 

64 

64 

64 

64

72

min

 80 

79 

78 

81 

77

76 

76 

75 

74 

74 

74 

73 

72 

72 

72

72 

72 

71 

70 

69

68 

67 

66 

64 

64

64 

64 

64 

64 

64 

63 

71

November

max

63 

62 

59 

58 

57

59 

62 

63 

63 

64

64 

64 

63 

63

min

61 

59 

58 

55

54

57 

57 

61 

60 

60

62 

63 

62 

60

December

max min

January

max min

February

max

62 

62

63 

62 

62 

62 

62

61 

60 

61 

61 

63

62 

64 

63

min

"

59 

60

59 

60 

60 

60 

60

60 

59 

60 

60 

60

60 

62 

62

March

max

63 

62 

63 

63 

63

64 

66 

66 

66 

65

64 

64 

64 

64 

63

62 

62 

62 

63 

65

65 

65 

63 

60 

62

64 

66 

66 

65 

64 

65

64

min

62 

62 

62 

62 

62

62 

64 

66 

65 

64

64 

64 

64 

63 

62

62 

60 

61 

62 

62

65 

63 

60 

60 

62

64 

66 

66 

65 

64 

65

63

April

max

64 

63 

62 

63 

65

65 

65 

64 

64 

67

67 

67 

67 

67 

67

67 

67 

67 

67 

67

66 

65 

65 

68 

70

70 

70 

70 

69 

71

67

min

63 

61 

61 

61 

64

65 

64 

63 

64 

64

66 

67 

66 

67 

66

66 

65 

67 

66 

66

65 

64 

63 

65 

67

69 

70 

69 

68 

69

65
COLORADO RIVER MAIN STEM Continued

COLORADO RIVER BELOW CIBOLA VALLEY, ARIZ.

LOCATION. Temperature recorder at gaging station, 6.7 miles south of Cibola, 39.7 miles downstrea

from Palo Verde diversion dam near Blythe, Calif., and 38 miles upstream from Imperial Dam. 

DRAINAGE AREA. 183,800 square miles, approximately.

RECORDS AVAILABLE. Water temperatures: March 1956 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 86°F July 30, Aug. 1, 23, 24.

EXTREMES, March 1956 to September 1957. Water temperatures: Maximum, 86°F July 30, Aug. 1, 23, 2

REMARKS. Thermograph installed Feb. 29, 1956. Recorder not operating Oct. 11 to Feb. 19. Record

September 1957 given in WSP 1513.

Temperature (°F) of water, February to September 195

/continuous-recording thermograph?

Day

3. ..................

4...................

5. ..................

6. ..................

7...................

9. ..................

12. ..................

13. ..................

14...................

15...................

16. ..................

17...................

18...................

19...................

20. ..................

22. ..................

23. ..................

24. ..................

25...................

26. ..................

27. ..................

28...................

29. ..................

30. ..................

31...................

Average .......

October

max min

November

max min

December

max min

January

max min

February

max

57

--

min

52

--

March

max

58 

58 

59 

59 

59

59 

57 

55 

56 

58

59 

59 

55 

55 

56

56 

58 

58 

59 

60

60 

62 

62 

62 

63

63 

63 

62 

60 

60 

61

59

min

56 

56 

57 

58

58

57 

55 

54 

54 

56

58 

55 

54 

54 

55

56 

56 

57 

58 

59

60 

60 

62 

62 

62

62 

62 

60 

59 

59 

60

58

April

max

59 

58 

57 

58 

60

61 

62 

63 

63 

63

63 

62 

62 

62 

62

62 

64 

64 

66 

67

68 

70 

71 

71 

70

70 

68 

67 

68 

69

64

min

58 

57 

56 

57 

58

60 

61 

62 

63 

63T

62 

62 

62 

61 

61

62 

62 

64 

64 

66

67 

68 

70 

70 

69

68 

67 

66 

67 

68

63

m
COLORADO RIVER MAIN STEM Continued 

COLORADO RIVER BELOW CIBOLA VALLEY, ARIZ.--Cont

Temperature (°F) of water, water year October 1956 to Septem

/continuous-recording thermograph/

Day

5. ..................

6...................

7. ..................

8. ..................

B....... ............

10. ..................

12. ..................

14...................

16. ..................

17. ..................

21...................

22. ..................

23...................

25. ..................

26. ..................

27. ..................

28. ..................

29. ..................

31...................

Average .......

October

max

79 

76 

78 

78 

77

77 

77 

76 

76 

76

"

 "

"

"

--

min

76 

75 

76 

75 

76

76 

76 

75 

74 

75

"

"

~

"

NoTember

max min

December

max min

January

max min

February

max

57

58 

58 

59 

59 

59

59 

61 

61

--

min

57

57 

56 

58 

57 

58

58 

59 

60

--

March

max

62 

62 

62 

62 

63

63 

65 

66 

66 

65

66 

66 

64 

62 

63

63 

64 

66 

65 

65

66 

65 

62 

61 

64

65 

66 

66 

66 

65 

65

64

min

60 

61 

61 

61 

61

62 

63 

65 

65 

62

63 

64 

62 

60 

61

60 

62 

63 

63 

61

61 

60 

59 

59 

61

63 

64 

65 

64 

63 

63

62

April

max

65 

63 

65 

67 

67

67 

65 

65 

67 

68

69 

68 

69 

70 

70

70 

69 

69 

70 

69

68 

67 

70 

70 

71

70 

70 

71 

72 

73

68

min

62 

60 

62 

64 

65

65 

63 

62 

65 

66

67 

66 

67 

68 

68 

68 

67 

67 

67 

67

67 

65 

66 

68 

68

68 

68 

68 

70 

72

66

m
GILA RIVER BASIN 

WILLOW CREEK NEAR DOUBLE CIRCLE RANCH, NEAR MORENCI

LOCATION. Temperature recorder at gaging station in San Carlos Indian Reservation, 1 mile upstre

of Double Circle Ranch, 2J miles upstream from mouth, and 19 miles northwest of Morenci, Graham 

DRAINAGE AREA. 149 square miles.

RECORDS AVAILABLE.--Water temperatures: December 1956 to September 1957.

EXTREMES, 1956-57.--Water temperatures: Maximum, 81°F July 29, 30; minimum, freezing point on sev

REMARKS. Thermograph installed December 2, 1956. Records of discharge for water year October 195

Temperature (*F) of water, December 1956 to September 1

Day

4. ..................

5. ..................

6. ..................

7...................

8...................

9. ..................

10...................

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

13...................

14. ..................

15...................

17...................

18...................

19...................

21...................

23...................

24. ..................

25...................

26. ..................

27...................

30. ..................

31. ..................

Average .......

October

max min

November

max mln

December

max

38 

37 

37 

38

43 

40 

40 

45 

38 

40 

41 

39 

40 

39 

37 

37 

37 

37 

37

38 

38 

35 

34 

33

33 

33 

33 

33 

33 

34

37

min

32 

33 

32 

33

37 

36 

37 

33 

35 

35 

36 

35 

34 

34 

32 

33 

33 

32 

32

32 

35 

34 

33 

33

33 

33 

33 

33 

33 

33

34

January

max

38 

41 

41 

43

44

43 

42 

44 

48 

48 

49 

47 

49 

50 

48

45 

43 

41 

42 

41 

41 

38 

41 

41 

44

44 

44 

43 

41 

41 

44

44

min

34 

37 

39 

39 

40

39 

39 

42 

43 

48 

45 

44 

43 

48 

42 

39 

36 

35 

36 

35 

37 

35 

35 

35 

37

36 

42 

39 

38 

36 

36

39

February

max

44 

45 

45 

44 

49

48 

50 

50 

54 

55 

57 

59 

60 

58 

58

57 

58 

57 

54 

55

54 

59 

56 

57 

55

56 

57 

54

54

min

35 

35 

43 

43 

40

39 

41 

41 

45 

46 

47 

48 

49 

48 

47

5Q 

50 

52 

49 

48

48 

50 

48 

47 

46

46 

47 

47

46

March

max

53 

53 

51 

54 

55

58 

58 

61 

56 

55

61 

61 

58 

59 

58

57 

60 

56 

54 

53 

55 

52 

49 

52 

55

58 

60 

56 

57 

59 

59

56

min

50 

46 

45 

44 

43

45 

45 

47 

47 

52 

47 

46 

47 

43 

44

44 

45 

47 

48 

48 

48 

47 

41 

39 

40

44 

47 

45 

51 

52 

48

46

April

max

58 

52 

49 

58 

60

61 

60 

58 

60 

62 

62 

62 

62 

59 

61

60 

59 

59 

60 

60

56 

65 

60 

62 

61

60 

61 

61 

61 

62

60

min

50 

48 

43 

46 

47

50 

52 

47 

48 

49 

50 

51 

50 

52 

51

50

50 

50 

50 

48 

50 

60 

58 

55 

51

50 

50 

52 

54 

54

51

m
GILA RIVER BASIN 191

GILA RIVER BASIN Continued 

SAN SIMON CREEK NEAR SOLOMON, ARIZ.

LOCATION. At gaging station, 1 mile southwest of Solomon, Graham County, and 2| miles

upstream from mouth. 

DRAINAGE AREA. 2.192 square miles. 

RECORDS AVAILABLE. water temperatures: July and August 1957.

Sediment records: June to September 1956, July to August 1957. 

EXTREMES, June 1956 to August 1957. Sediment loads: Maximum daily, 260,000 tons

Aug. 30, 1957; minimum daily, 0 tons on many days. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in

WSP 1513.

_ Temperature (°F) of water, July to August 1957 

e-daily measurement between 11 a.m. and 6 p.m./

Day

1

2

3

4

5

6

7

Aver

July

..

ige ...

Aug.

..

87

91

84

86

Day

8

9

10

11

12

13

14

July

95

92

--

Aug.

91

a 77

86

a 67

94

a 69

90

Day

15

16

17

18

19

20

21

July

_

101

89

86

84

91

--

Aug.

86

82

a71

82

85

88

78

Day

22

23

24

25

26

27

28

July

_.

86

78

84

87

Aug.

78

92

a83

a 74

--

Day

29

30

31

July

a72

a75

--

86

Aug.

--

83

a Measurement before 11 a.m.

Suspended sediment, July and August 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.

July

Mean 

discharge 

(cfs)

0

0

0

0

0

0

0

0

11

.1

0

0

0

0

0

80

435

244

144

36

0

0

0

0

32

732

360

47

20

.2

0

2,123.3

Suspended sediment

Mean 

concentration 

(ppm)

_

"

_

52, 500

17,000

_

__

-

14, 500

40, 700

62, 700

50, 200

23, 800

._

46, 200

58,500

44,500

33, 000

24, 000

14, 000

--

Tons 

per 

day

0

0

0

0

0

0

0

0

s 2, 250

5

0

0

0

0

0

s 14, 700

s 101, 000

s 44, 400

s 28, 000

s 5, 030

0

0

0

0

s7,860

s 124, 000

44, 900

4,340

1,300

8

0

377,793

August

Mean 

discharge 

(cfs)

0

0

0

12

266

900

462

79

197

277

66

33

9.2

8.7

94

85

76

348

424

96

12

170

108

.8

.7

.6

0

0

0

1,500

950

6,175.0

Suspended sediment

Mean 

concentration 

(ppm)

_.

_

..

60,400

51,800

64, 800

50, 500

32, 900

43, 700

45, 500

33, 000

25, 000

24, 000

24, 000

44, 700

45,400

36,600

58,200

51,200

31,100

24,500

31,700

38, 600

17, 000

14,500

2,670

--

Tons 

per 

day

0

0

0

s 2, 540

s 45, 800

s 168, 000

65, 300

s8, 320

s 34, 800

35, 300

6,100

2,230

596

s689

s 20, 000

s 12, 200

s 12, 100

s 64, 300

s 65, 300

s 8, 420

794

s 46, 400

s 20, 700

a 37

27

s24

0

0

0

b 260, 000

b 160, 000

1,039,977

Total discharge for period (cfs-days) .......................... 8, 298. S

Total load for period (tons) ................................... 1, 417, 770

s Computed by subdividing day.

a Computed from estimated concentration graph.

b Computed from water-sediment discharge curve.
GILA RIVER BASIN Continued 

SAN SIMON CREEK NEAR SOLOMON, ARIZ.--Contin

Particle-size analyses of suspended sediment, July to Aug

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

July 16, 1957 ....

Aug. 22.........

Aug. 22 .........

AUK. 23 .........

Time

11:30 p.m. 

4:30 p.m. 

1:15 p.m. 

8:45 p.m. 

10:40 p.m.

9:00 a.m. 

9:00 a.m. 

7:50 a.m. 

12:01 p.m. 

7:00 p.m.

10:00 p.m. 

11:00 p.m. 

11:00 p.m. 

12:01 «.m. 

2:30 o.m.

Discharge 

(cfs)

2,180 

1,340 

24 

517 

2,690

763 

763 

76 

28 

907

880 

1,770 

1,770 

1,340 

15

Water 

temperature 

(°F)

68 

82 

78 

71 

69

73 

73 

69 

90 

76

72 

72 

72 

72 

92

Suspended se

Concentration 

of sample 

(ppm)

61,000 

88,400 

54,000 

37, 500 

74,500

61,900 

61,900 

32,200 

48,400 

72,200

97,400 

97,900 

97,900 

84,800 

26.500

Concentration 

of suspension 

analyzed 

(ppm)

3,660 

4,230 

4,150 

4,090 

4,050

3,680 

3,990 

3,740 

3,720 

3,960

4,360 

3,660 

5,100 

3,540 

3.690

Percent fin

0.002

37 

5

28 

4

0.004

34 

39 

60 

38 

36

47 

13 

58 

58 

38

34 

41 

9 

36 

70

0.008

55 

44

47 

29

0.016

56 

69 

90 

64 

65

70 

65 

84 

92 

57

57 

60 

60 

62 

93
GILA RIVER BASIN Continued 

GILA RIVER AT KELVIN, ARIZ.

LOCATION. Just above mouth of Mineral Creek, and 1,200 feet upstream from gaging station at K

River, and 19i miles upstream from Ashurst-Hayden Dam.

DRAINAGE AREA. 18,011 square miles (at gaging station) of which 5,125 square miles is below Co

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1957.

Water temperatures: December 1950 to September 1957.

EXTREMES, 1956-57. Dissolved solids: Maximum, 3,080 ppm July 1-8; minimum, 356 ppm Sept. 1-30

Hardness: Maximum, 1,940 ppm July 1-8; minimum, 152 ppm Sept. 1-30.

Specific conductance: Maximum daily, 3,660 micromhos May 27; minimum daily, 500 micromhos Se

Water temperatures.- Maximum, 89°F July 30; minimum, 46°F Dec. 31.

EXTREMES, 1950-57. Dissolved solids: Maximum, 3,080 ppm July 1-8, 1957; minimum, 294 ppm Sept

Hardness: Maximum, 1,940 ppm July 11-18, 1956, July 1-8, 1957; minimum, 152 ppm Sept. 1-30, 

Specific conductance: Maximum, 3,860 micromhos July 15, 1955; minimum. 407 micromhos Jan. 20

Water temperatures: Maximum, 98'F July 25, Aug. 20, 1953; minimum, 41*F Dec. 15, 25, 1950, J

REMARKS. Records of specific conductance of daily samples available in district office at Albu

October 1956 to September 1957 given in WSP 1513. No appreciable inflow from Mineral Creek 

periods of heavy local rains.

Chemical analyses, in parts per million, water year October 19

Date of collection

Oct. 1-31, 1956 .. 

Nov. 1-30........

Jan. 1-8, 1957 ...

Jan. 12 ..........

Feb. 21-38 .......

Mean 

discharge 

(cfs)

1.02 

3.53 

7.06 

9.58 

1,150 

824

46 

19.5 

14 

11.5 

33 

138 

158

78 

45 

31.0 

15.4 

48 

19 

17.1

Silica 

(SiO.)

42 

34

Iron 

(Fe)

0.01 

.01

Calcium 

(Ca)

544 

264 

232 

197 

131 

71

121 

179 

145 

224 

78 

100 

147

125 

155 

169 

201 

118 

163 

186

Magnesium 

(Mg)

131 

58 

51 

45 

24 

11

25 

42 

31 

55 

16 

22 

36

33 

38 

43 

52 

25 

36 

43

Sodium 

(Na)

100 

255 

253 

219 

71 

33

90 

174 

122 

213 

76 

106 

154

128 

159 

184 

216 

84 

158 

203

Potassium 

(K)

7.2 

14

Bicarbonate 

(HCO,)

284 

235 

234 

211 

330 

212

191 

226 

217 

270 

172 

233 

251

239 

239 

234 

233 

133 

217 

220

Sulfate 

(SO,)

1,650 

677

Chloride 

(Cl)

93 

198

Fluoride 

(F)

0.5 

2.1

Nitrate 

(NO,)

0.4 

1.7

Bo

ro

(B

0.1

.2
GILA RIVER BASIN--Continued

GILA RIVER AT KELVIN, ARIZ . Continue

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Mar. 1-8, 1957...

Sept. 1-30 .......

Weighted average a

Weighted average b

Mean 

discharge 

(cfs)

12.1 

269 

71.2 

17.4 

7.55 

2.47

.69 

28.0 

1.06 

.66 

5.47 

.20 

.19 

248

328 

570 

278 

318

89. 0

93.2

Silica 

(SiO,)

35

42

--

"

Iron 

(Fe)

0.02 

.02

--

--

Calcium 

(Ca)

200 

91 

125 

153 

343 

365

522 

129 

544 

568 

389 

572 

562 

70

88 

75 

66 

48

82

82

Magnesium 

(Mg)

44 

20 

34 

49 

80 

76

120 

31 

116 

126 

52 

123 

122 

11

15 

14 

10 

7.6

16

16

Sodium 

(Na)

255 

190 

226 

256 

208 

199

110 

316 

121 

100 

106 

109 

108 

98

70 

60 

60 

56

85

85

Potassium 

(K)

14

7.7

-

"

Bicarbonate 

(HCO,)

253 

245 

283 

185 

245 

225

226 

189 

333 

222 

155 

354 

343 

234

299 

275 

225 

182

238

238

Sulfate 

(S0«)

597 

1,840

-

"

Chloride 

(CD

277 

67

--

-

Fluoride 

(F)

1.5 

.3

-

-

Nitrate 

(NO,)

1.7 

.5

-

"

Boron 

(B)

0.38 

.21

-

-

a Average for 365 days of flow which includes 93 percent of total runoff.

b Includes estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 19
GILA RIVER BASIN 

GILA RIVER BASIN Continued 

GILA RIVER AT KELVIN, ARIZ. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

^nee-daily measurement, generally between 12 m. and 6 p. m. 7

195

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

Average

Oct.

84

83

79

81

80

._

a76

79

82

a 78

82

80

79

76

79

77

76

76

78

78

77

76

74

69

76

76

74

72

62

74

--

77

Nov.

64

60

65

66

70

74

64

64

72

70

65

62

62

57

b50

--

60

50

53

49

--

56

58

60

..

_

58

62

--

Dec.

65

59

54

57

..

a 54

58

50

b51

a 51

a 52

a 51

60

58

_

56

a 48

a 48

58

_

50

60

54

60

56

50

46

--

Jan.

..

58

54

61

59

60

53

54

54

55

_

62

61

a 60

61

58

53

58

60

50

53

a 53

56

64

a 57

a 51

a 50

53

52

a 55

56

Feb.

a 54

a 54

54

59

62

64

a 64

65

67

74

71

a 70

a 70

__

a 69

67

a 68

a 64

63

71

70

a 64

"

a 66

70

a 62

-_

--

65

Mar.

66

67

64

71

"

70

75

b57

b59

b59

66

66

66

67

66

61

60

59

a 63

a 60

60

63

a 64

68

73

69

68

69

a 67

65

Apr.

71

72

68

71

..

70

b62

a65

84

a68"

83

73

a 68

_

72

71

a 70

--

60

a 62

a 66

83

72

a 70

84

a 66

78

--

71

May

83

a 74

a 74

a 73

a 70

a 7,0 '-.

84

73

a 70

a 70

83

a 67

_.

--

--

a 69

~

a 60

-_

_.

--

a 64

75

74

_.

74

June

a 72

84

--

a 73

70

a70

a 70

a 76

72

78

a72

74

a71

a 70

a78

a79

a79

a 80

79

a 73

a 73

a69

a72

a 76

_

a 77

a76

a 74

a75

--

75

July

a 76

a76

a 77

82

a 77

a76

a76

a 76

a 81

a 78

a 75

a 73

a 79

a 78

a76

a 77

a79

a 81

_

--

_

a 89

a 87

80

Aug.

a 86

a 85

84

a 86

a 88

a 87

a 86

-

a 87

82

87

87

a 87

a 86

a 84

a 84

a 81

a 82

a 86

86

85

a85

a 86

a 86

a 87

a 86

b84

85

85

Sept.

85

a 82

86

a 85

84

83

83

83

83

79

b74

81

80

79

a 78

78

..

-_

..

--

a Measurement obtained after 6 p. m. 

b Measurement obtained in the a. m.
GILA RIVER BASIN Continued 

SALT RIVER AT STEWART MOUNTAIN DAM, 

LOCATION. Just below dam, 3J miles above gaging station below Stewart Mountain Oam, which is 6 

DRAINAGE AREA. 6,211 square miles.

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1957.

Water temperatures: December 1950 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 1,050 ppm Nov. 1 to Feb. 8, May 1-9, 11-13, June 

Hardness: Maximum, 270 ppm Nov. 1-30; minimum, 178 ppm Sept. 1-17.

Specific conductance: Maximum daily, 1,950 micromhos Dec. 30; minimum daily, 1,220 micromhos 

Water temperatures: Maximum, 77'F Oct. 1. 

EXTREMES, 1950-57. Dissolved solids: Maximum, 1,300 ppm Aug. 21-28, 1951; minimum, 361 ppm Mar

Hardness: Maximum, 270 ppm Nov. 1-30, 1956; minimum, 138 ppm Apr. 1-10, 1953.

Specific conductance: Maximum daily, 2,490 micromhos Aug. 20, 1951; minimum daily, 620 micromh

Water temperatures: Maximum, 84°F Aug. 24, 26, 27, 1951; minimum, 49°F Feb. 14, 1951.

REMARKS. Records of specific conductance of daily samples available in district office at Albuqu

below Stewart Mountain Dam for water year October 1956 to September 1957 given in WSP 1513. N

except during periods of heavy local rains.

Chemical analyses, In parts per million, water year October 195

Date at collection

Oct. 1-12, 1956...

Dec. 1-Feb. 8,1957 

Feb. 20-26, Mar. 28-

May 1-9, 11-13, 

June 4-30 .......

Sept. 18-30. ......

Weighted average

Mean 

discharge 

(els)

444 

194 

94.4 

a 163

a 388

a 699 

1,201

1,319 

1,361 

1,482 

902

b601

Silica 

(SIO.)

19 

19

--

Iron 

(Fe)

0.00 

.01

"

Calcium 

(Ca)

56 

60 

62 

63

64

60 

56

56 

52 

50 

49

56

Magnesium 

(Mg)

24 

25 

28 

25

22

24 

24

16 

14 

13

14

20

Sodium 

(Na)

258 

288 

302 

306

278

283 

272

228 

193 

186 

205

246

Potassium 

(K)

7.4 

7.6

"

Bicarbonate 

(HCO.)

182 

189 

193 

196

192

186 

165

167 

161 

154 

148

171

Sulfate 

(SO,)

64 

72

--

Chloride 

(Cl)

416 

458

--

Fluoride 

(F)

0.3 

.3

"

Nitrate 

(NO,)

2.1 

1.9

--

Boron 

(B)

0.18 

.18

-

a No flow Feb. 9-19, 27 to Mar. 27, May 10, May 14 to June 3. 

b Average for 303 days of flow.
GILA RIVER BASIN

GILA RIVER BASIN Continued

SALT RIVER AT STEWART MOUNTAIN DAM, ARIZ. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at about 7 a. m. 7

197

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

Average

Oct.

77

76

76

76

76

76

76

76

76

76

76

76

75

75

75

75

75

75

74

73

72

72

71

Nov.

..

67

67

68

67

..

--

--

66

66

66

--

--

60

60

60

*~

Dec.

..

--

--

..

..

--

56

56

56

56

55

55

56

65

56

Jan. Feb. Mar.

..

_

--

--

..

..

..

56

_

56

56

Apr.

56

56

55

55

55

55

58

55

58

55

55

55

57

57

57

57

57

57

57

57

57

57

57

57

57

58

59

60

59

57

May June

..

56

56

56

56

61

61

61

61

61

61

61

63

62

62

62

62

62

62

65

64

65

65

65

65

65

65

65

62

July

66

66

67

66

66

66

65

65

65

65

65

65

65

65

65

65

65

66

66

66

66

66

66

66

67

67

66

66

66

67

66

Aug.

65

65

69

69

69

69

69

69

69

68

68

68

68

68

69

68

70

70

70

70

70

70

71

70

70

70

70

70

70

70

70

69

Sept.

72

72

72

72

72

72

73

73

73

73

73

73

73

74

74

74

74

74

75

74

68

66

67

67

67

67

67

76

76

_

72
GILA RIVER BASIN--Continued 

OAK CREEK NEAR CORNVILLE, ARIZ.

LOCATION. Temperature recorder at gaging station on county highway bridge, 0.2 mile upstream fro

County, and 15 miles upstream from mouth. 

DRAINAGE AREA. 357 square miles.

RECORDS AVAILABLE. Water temperatures: June 1954 to September 1957. 

EXTREMES, 1956-57.--Water temperatures: Maximum, 85°F July 31; minimum, 38°F Jan. 28. 

EXTREMES, 1954-57. Water temperatures: Maximum, 90°F July 28, 1954; minimum, 37°F Feb. 21, 19

REMARKS. Recorder stopped, Aug. 15 to 20; range 75°F to 83°F. Records of discharge for water y

Temperature (°F) of water, water year October 1956 to Sept

/Continuous-recording thermograph/

Day

1.... ...............

2. ..................

3. ..................

4...................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10...................

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

12...................

13. ..................

14. ..................

15...................

16...................

17...................

18...................

19. ..................

20. ..................

21...................

22...................

24. ..................

25...................

26...................

27. ..................

28...................

29. ..................

30. ..................

31...................

October

max

69 

71 

73 

73 

71

71 

72 

68 

69 

69

69 

68 

67 

67 

67

67 

67 

67 

66 

66

65 

64 

63 

63 

59 

60 

61 

61 

59 

57 

57

66

min

67 

66 

67 

66 

66

66 

66 

64 

62 

62

62 

62 

61 

61 

61

62 

61 

61 

61 

60

60 

60 

61 

57 

53

55 

56 

56 

57 

53 

54

November

max

56 

53 

51 

51 

52

55 

56 

57 

58 

58

58 

56 

57 

55 

52

50 

51 

51 

50 

47

47 

49 

49 

51 

51 

51 

50 

50 

50 

51

min

53 

50 

48 

48 

49

51 

52 

54 

54 

54

54 

54 

54 

53 

49

48 

48 

49 

47 

44

44 

45 

48 

48 

48

48 

48 

48 

48 

48

December

max

50 

49 

50 

52

54

53 

53 

50 

46 

46

46 

47 

48 

48 

49

48 

48 

47 

47 

46

46 

48 

46 

44 

46 

45 

45 

47 

47 

47 

46

min

48 

47 

47 

49 

51

52 

50 

46 

44 

44

43 

44 

46 

46 

46

46 

46 

43 

43 

44

44 

43 

44 

39 

43

41 

41 

42 

45 

45 

44

4f?

January

max

48 

50 

50 

50 

52

51 

51 

49 

49 

46

46 

48 

49 

50 

50

49 

47 

46 

47 

47

46 

46 

44 

43 

45

46 

45 

39 

40 

44 

44

min

47 

46 

47 

48 

50

49 

48 

49 

44 

45

43 

46 

48 

49 

48

46 

43 

44 

44 

45

46 

41 

41 

43 

43

45 

39 

38 

39 

40 

40

February

max

44 

45

47 

49 

49

48 

49 

52 

51 

48

47 

46 

46 

44 

43

45 

45 

46 

45 

46

46 

49 

49 

46 

49

50 

54 

53

min

41 

43 

44 

45 

45

45 

45 

47 

48 

45

45 

43 

42 

40 

41

43 

44 

45 

44 

44

45 

45 

44 

42 

44

46 

48 

50

44

March

max

52 

48 

48 

49 

52

56 

58 

60 

58 

60

59 

59 

58 

58 

58

57 

56 

59 

57 

55

56 

57 

52 

54 

58

59 

62 

58 

61 

61 

62

57

min

48 

45 

46 

44 

47

50 

52 

53 

54 

54

53 

52 

52 

50 

51

53 

50 

52 

54 

53

53 

52 

47 

46 

49

52 

53 

54 

54 

56 

55

S>1

April

max

60 

52 

59 

61 

64

66 

64 

63 

62 

66

67 

68 

69 

66 

68

68 

68 

64 

66 

62

59 

56 

57 

62 

66 

67 

68 

66 

67 

70

64

min

52 

51 

50 

53 

55

58 

56 

56 

57 

56

59 

59 

59 

61 

59

60 

60 

60 

56 

58

56 

54 

53 

53 

58

58 

59 

58 

58 

60

57
GILA RIVER BASIN Continued

VERDE RIVER BELOW BARTLETT DAM, AR

LOCATION. At gaging station, 2J miles downstream from Bartlett Dam, Maricopa County, and 3J mile

DRAINAGE AREA.--6,188 square miles.

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1957.

Water temperatures: December 1950 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 550 ppm Dec. 18-21; minimum, 184 ppm Apr. 13-30.

Hardness: Maximum, 413 ppm Dec. 18-21; minimum, 132 ppm Apr. 13-May 31.

Specific conductance: Maximum daily, 958 micromhos Nov. 10; minimum daily, 286 micromhos May 1

Water temperatures: Maximum, 80°F on many days in August and September; minimum, 43°F on sever

EXTREMES, 1950-57. Dissolved solids: Maximum, 550 ppm Dec. 18-21, 1956; minimum, 158 ppm Jan. 1

Hardness: Maximum, 413 ppm Dec. 18-21, 1956; minimum, 108 ppm Jan. 11-20, 1952.

Specific conductance: Maximum daily, 958 micromhos Nov. 10, 1956; minimum 'daily, 234 micromhos 

Water temperatures: Maximum, 90°F July 18, Aug. 14, 1951; minimum, 41°F Jan. 30, 1952.

REMARKS. Records of specific conductance of daily samples available in district office at Albuqu

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-31, 1956 ..

Jan. 1-16, 1957...

Mean 

discharge 

(cfs)

104 

204 

25.2 

75.4 

22.9 

504 

30.2 

23.2

33.6 

99.0 

50.2 

21 

25.8 

40.4 

68 

190 

872

Silica 

(SiOa)

28 

23

Iron 

(Fe)

0.03 

.02

Calcium 

(Ca)

48 

51 

73 

60 

66 

52 

75 

63

58 

46 

38 

47 

47 

37 

37 

33 

33

Magnesium 

(Mg)

41 

42 

48 

43 

52 

42 

55 

49

37 

29 

21 

28 

29 

21 

21 

16 

16

Sodium 

(Na)

52 

49 

56 

48 

60 

43 

62 

57

40 

30 

22 

30 

30 

21 

20 

15 

15

Potassium 

(K)

4.3 

3.5

Bicarbonate 

(HCO,)

304 

316 

415 

347 

406 

325 

427 

376

325 

261 

204 

259 

260 

196 

193 

156 

159

Sulfate 

(SO,)

96

71

Chloride 

(Cl)

35 

28

Fluoride 

(F)

0.5 

.4

Nitrate 

(NO,)

0.9

1.5

Boron 

(B)

0.28 

.26
GILA RIVER BASIN Continued

VERDE RIVER BELOW BARTLETT DAM, ARIZ. Co

Chemical analyses, In parts per million, water year October 1956 to Se

Date of collection

Apr. 1-12, 1957 ..

May 1-31.........

July 1-21.........

Sept. 1-30. .......

Weighted average

Mean 

discharge 

(els)

541 

207 

677 

862 

800 

84.5 

546

774 

365 

397 

313

390

Silica 

(810.)

19

--

Iron 

(Fe)

0.01

--

Calcium 

(Ca)

33 

30 

30 

33 

36 

37 

37

40 

44 

44

47

86

Magnesium 

(Mg)

15 

14 

14 

15 

20 

20 

21

19 

21 

25 

26

19

Sodium 

(Na)

14 

12 

12 

14 

17 

19 

20

22 

27 

31 

34

19

Potassium 

(K)

2.4

--

Bicarbonate 

(HCO,)

159 

145 

149 

163 

183 

192 

197

208 

228 

a 249 

255

186

Sulfate 

(SO,)

28

--

Chloride 

(Cl)

12

--

Fluoride 

(F)

0.4

--

Nitrate 

(NO,)

2.0

--

Boron 

(B)

0.23

"

a Includes equivalent of 3 parts per million of carbonate (COJ.
GILA RIVER BASIN 201

GILA RIVER BASIN Continued 

VERDE RIVER BELOW BARTLETT DAM, ARIZ.~Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once -daily measurement at 8:30 a. m.7

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

A

lt rer- At* 

age

Oct.

79

79

79

77

77

75

74

74

70

77

70

69

69

69

68

68

68

68

66

65

65

64

64

63

63

62

61

62

62

63

61

69

Nov.

59

59

59

56

55

57

56

54

54

56

57

57

58

50

50

50

48

48

48

46

46

48

46

46

44

44

44

45

46

~

51

Dec.

44

44

43

43

44

44

44

43

43

54

55

55

53

53

53

52

51

48

50

50

52

50

48

48

46

44

45

44

43

44

43

48

Jan.

43

43

43

43

45

45

45

46

46

46

45

45

48

48

46

48

46

45

45

45

46

46

46

46

45

45

45

45

45

45

45

45

Feb.

45

45

44

45

46

46

48

52

52

50

51

50

50

51

50

50

50

50

50

50

50

52

54

54

52

50

50

_

--

SO

Mar.

a 50

54

54

52

52

52

52

50

50

50

50

50

48

50

50

50

50

48

50

52

52

52

52

52

50

50

50

50

50

51

Apr.

50

52

48

50

50

52

52

52

54

54

54

54

52

52

54

52

52

52

52

56

52

52

52

52

54

54

56

54

54

58

~

53

May

58

58

58

58

58

60

58

58

58

58

58

60

60

60

58

60

60

62

58

58

60

80

60

60

60

60

60

58

60

60

60

59

June

60

60

60

58

60

60

60

60

60

60

60

58

58

58

58

60

60

60

60

60

62

60

60

60

60

60

60

60

80

60

60

July

60

60

60

64

54

56

58

68

68

70

68

68

68

68

70

70

68

68

64

64

80

68

68

72

72

70

72

72

72

72

74

67

Aug.

74

72

72

76

74

74

76

78

78

78

78

78

78

80

80

80

78

80

80

80

80

80

78

78

80

80

80

80

78

78

Sept.

80

80

80

80

80

78

80

80

80

80

80

80

80

80

80

80

80

80

78

76

76

76'

76

76

76

76

78

78

80

80

79

a Measurement at 10:30 a. m.
GILA RIVER BASIN Continued 

AGUA FRIA RIVER BELOW LAKE PLEASANT DAM, ARIZ

LOCATION. At water stage recorder on canal 1J miles downstream from Lake Pleasant Dam on Agua Fria R

23 miles upstream from New River.

DRAINAGE AREA. 1,459 square miles (above Lake Pleasant). 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1957.

Water temperatures: December 1950 to September 1957.

EXTREMES, 1956-57. Dissolved solids: Maximum, 290 ppm Sept. 1-25; minimum, 240 ppm June 29 to July 

Hardness: Maximum, 172 ppm Sept. 1-25; minimum, 135 ppm June 23-28.

Specific conductance: Maximum daily, 501 micromhos Sept. 19; minimum daily, 362 micromhos June 30. 

Water temperatures: Maximum, 82°F on several days during August.

EXTREMES, 1950-57. Dissolved solids: Maximum, 400 ppm Oct. 14-20, 1955; minimum, 168 ppm Jan. 29 to 

Hardness: Maximum, 246 ppm Oct. 14-20, 1955; minimum, 108 ppm June 21-30, 1952.

Specific conductance: Maximum daily, 698 micromhos Oct. 19, 1955; minimum,daily, 241 micromhos Jan. 

Water temperatures: Maximum, 85°F Aug. 12, 15-16, 1955.

REMARKS. Records of specific conductance of daily samples available in district office at Albuquerque

there is flow. Records of discharge for water year October 1956 to September 1957 furnished by Mar

Tucson District. Monthly diversions to canal below Lake Pleasant diversion dam are published as Ag

Oct. 1 to June 22, Sept. 26-30.

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

June 23-28, 1957....

Sept. 1-25. .........

Weighted average . .

Mean 

discharge 

(cfs)

72.0 

88.2 

88.6 

87.4 

102

a 90.7

Silica 

(810.)

20

Iron 

(Fe)

0.02

Calcium 

(Ca)

31 

29 

40 

42 

44

41

Magnesium 

(Mg)

14 

17 

13 

14 

15

14

Sodium 

(Na)

37 

22 

27 

28 

30

28

Potassium 

(K)

5.0

Bicarbonate 

(HCO,)

188 

132 

194 

197 

209

196

Carbonate 

(CO,)

Sulfate 

(S04)

30

Chloride 

(Cl)

20

Fluoride 

(F)

0.5

Nitrate 

(NOS )

2.4

Bo

ro

(B

0.1

a Average for 95 days ot flow.
GILA RIVER BASIN 

GILA RIVER BASIN Continued 

AGUA FBI A RIVER BELOW LAKE PLEASANT DAM, ARIZ.~Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at 1:30a., m/

203

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

Average

Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June

..

..

_

_

--

..

_

-

_

_

_.

--

_

_

--

_

65

76

74

74

74

74

74

74

--

July

74

74

74

74

74

74

75

74

74

75

75

75

75

75

75

76

76

74

75

76

76

76

76

76

77

77

77

77

78

80

80

76

Aug.

79

79

80

80

81

81

81

81

81

82

82

81

81

81

82

82

82

82

82

82

80

80

81

82

82

82

82

80

80

80

78

81

Sept.

78

78

78

77

78

78

78

78

78

77

77

77

76

76

76

74

74

72

72

72

72

72

72

72

72

..

_

..

..

_

--

75
GILA RIVER BASIN Continued 

GILA RIVER BELOW GILLESPIE DAM, ARI

LOCATION. About 1 mile below gaging station on Gila Bend Canal which is 200 feet below Gillespie 

Hassayampa River. Gila Bend Canal diverts from left bank and Enterprise Canal diverts from rig

DRAINAGE AREA. 49,620 square miles. 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1957.

Water temperatures: December 1950 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 6,510 ppm Nov. 1-24; minimum, 1,100 ppm Aug. 22-23

Hardness: Maximum, 1,810 ppm Nov. 1-24; minimum 305 ppm Aug. 22-23.

Specific conductance: Maximum daily, 9,580 micromhos Nov. 17-18; minimum daily, 1,790 micromhos 

Water temperatures: Maximum, 88°F July 4, 21, 22; minimum, 41"F Nov. 21. 

EXTREMES, 1950-57. Dissolved solids: Maximum, 6,510 ppm Sept. 21-30, 1955; Nov. 1-24, 1956; mini

Hardness: Maximum, 1,940 ppm Oct. 11-20, 1951; minimum, 95 ppm Aug. 2, 1955.

Specific conductance: Maximum daily, 10,200 micromhos Oct. 3, 1951; minimum daily, 370 micromho

Water temperatures: Maximum, 95°F July 19, 1951; minimum, 35 F Jan. 1, 1951.

REMARKS. Samples from canal are believed to be representative of total flow passing Gillespie Dam

Bend and Enterprise Canals. Records of specific conductance of daily samples available in dist

separate and combined discharge for Gila River and canals for water year October 1956 to Septemb

Chemical analyses, In parts per million, water year October 195

Date of collection

Oct. 1-31, 1956 ..

Jan. 1-11, 1957..

Jan. 17-30 ......

Feb. 20-22 ......

Apr. 29-May 31 . .

Mean 

discharge 

(cfs)

13.4 

15.9 

18.2 

18.7 

18.6

19.5 

23 

106 

51 

31.5

31.9 

25.9 

32.0 

26.0 

26.7

24.8 

15.3 

23.8 

13.3

Silica 

(SiO.)

26 

30

23 

33

Iron 

(Fe)

0.01 

.01

.01 

.00

Calcium 

(Ca)

373 

395 

373 

349 

377

403 

324 

214 

161 

308

387 

383 

316 

397 

345

316 

240 

347 

349

Magnesium 

(Mg)

166 

201 

183 

193 

204

165 

141 

88 

52 

127

177 

175 

137 

167 

162

187 

115 

182 

174

Sodium 

(Na)

1,560 

1,610 

1,470 

1,560 

1,620

1,540 

1,180 

757 

442 

1,100

1,510 

1, 

1,140 

1,430 

1,350

1,420 

1,020 

1,460 

1,450

Potassium 

(K)

11 

12

470

10 

8.7

Bicarbonate 

(HCO,)

297 

355 

343 

265 

342

376 

304 

225 

197 

318

358 

340 

303 

352 

307

258 

254 

321 

320

Suliate 

(SO.)

1,470 

1,460

1,330 

943

Chloride 

(Cl)

2,260 

2,290

2,100 

1,430

Fluoride 

(F)

2.9 

2.7

2.5 

3.9

Nitrate 

(NO,)

34 

44

24

37

Boron 

(B)

3.7 

3.7

2.2 

4.2
June 1-13, 1957...

June 24 -July 1 ....

Aug. 17-18 ......

Aug. 26 .........

Aug. 29-Sept. 30..

Weighted average

8.93 

10.5

8.62 

9.06

11.0

21.6

48.5

60.5

55

28

13.5

18.8

--

--_

--_

..

L "

--"_""

324 

302.

330 

296

Q4O

333

198

86 

148

326

86

93

238

349

343

337

208 

171

185 

170

IflQ

143

76

24

53

133

22

18

87

149

161

1,550 

1,430

1,540 

1,440

1,470

777

271 

515

1,220

244

280

889

899

1,350

1,500

1,380

"_"___

--

279 

264

261 

237

251

221

119 

175

327

145

214

305

306

354

294

305

______

--

--

_____

..~

--

______

--

~______

--

--
206 COLORADO RIVER BASIN

GILA RIVER BASIN Continued 

GILA RIVER BELOW GILLESPIE DAM, ARIZ.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement, generally in a. raj

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

Average

Oct.

73

72

70

67

a 86

a 83

66

65

63

63

64

65

63

63

61

63

61

60

61

60

60

60

60

58

50

51

56

51

50

51

a 68

63

Nov.

52

51

a 59

a 60

57

58

50

51

52

55

53

54

50

50

50

51

50

50

50

49

41

44

46

48

48

50

50

48

49

51

51

Dec.

47

48

46

48

50

50

50

45

46

46

47

48

48

49

49

48

49

50

49

48

49

46

46

47

45

45

45

48

45

44

44

47

Jan.

50

45

46

50

55

47

49

48

55

60

60

60

60

59

53

54

51

51

52

--

55

54

52

49

48

50

51

53

50

52

46

52

Feb.

48

47

47

60

54

54

52

56

63

65

66

65

63

63

64

64

61

60

63

63

63

62

60

61

62

60

60

62

60

Mar.

64

63

65

63

63

64

63

64

65

64

63

64

64

63

64

63

60

61

63

61

60

56

54

53

55

56

56

60

59

60

60

61

Apr.

60

60

61

60

63

65

66

66

63

63

64

62

65

66

65

65

66

67

66

65

63

59

60

61

66

66

66

65

66

67

--

64

May

67

68

70

70

71

71

71

69

69

69

69

66

67

67

66

68

69

75

75

69

69

71

70

69

70

66

68

67

69

70

71

69

June

75

79

78

78

79

78

80

74

75

70

71

75

75

67

75

76

75

76

76

75

79

79

78

77

75

81

80

80

80

78

76

July

79

80

80

88

85

85

83

83

85

83

80

82

82

82

79

80

81

64

81

80

88

88

79

80

83

82

84

85

83

84

83

Aug.

83

86

82

84

84

83

78

77

75

76

81

80

80

82

83

82

79

80

82

80

79

80

80

79

83

82

80

79

78

77

70

80

Sept.

71

75

76

75

75

75

76

80

78

81

80

80

80

75

76

71

72

70

69

70

69

70

69

69

70

70

70

69

71

74

a Measurement obtained in p. m.
GILA RIVER BASIN Continued 

MISCELLANEOUS ANALYSES OF STREAMS IN GILA RIVER 

MINERAL CREEK AT KELVIN 

Chemical analyses, in parts per million, water year October 195

Date of collection

Jan. 10, 1957.....

Aue. 20 .........

Mean 

discharge 

(cfs)

Silica 

(SiOJ

Iron 

(Fe)

Calcium 

(Ca)

67 

45 

82 

476 

476 

504 

500 

357 

635 

631 

532

Magnesium 

(Mg)

10 

10 

19 

112 

126 

135 

133 

147 

154 

138 

133

Sodium 

(Na)

Potassium 

(K)

12 

13 

17 

44 

27 

71 

52 

165 

29 

50 

62

Bicarbonate 

(HCO,)

108 

20 

59 

26 

aO 

bO 

cO 

dO 

248 

313 

76

Sulfate 

(SO,)

136 

144 

248 

1,630 

1,710 

2,320 

1,900 

3,060 

1,970 

1,890

Chloride 

(Cl)

3.0 

7.0 

8.0 

16 

18 

22 

19 

40 

19 

19

Fluoride 

(F)

Nitrate 

(NO,)

0.4 

6.4 

3.2 

4.4 

4.0 

2.5 

2.2 

1.1 

.7 

.5

Boron 

(B)

a Total acidity 0.9 parts per million (H+1 ). 

b Total acidity 9.7 parts per million (H+1 ). 

c Total acidity 2.0 parts per million (H+1 ). 

d Total acidity 28 parts per million (H+1 ).
COLORADO RIVER MAIN STEM 

COLORADO RIVER AT YUMA, ARIZ.

LOCATION. At gaging station 500 feet upstream from lower highway bridge, 1,800 feet downstream from u

upstream from Yuma Main Canal wasteway, 5 miles downstream from Gila River, 7 miles upstream from b

downstream from Imperial Dam.

DRAINAGE AREA. 242,900 square miles, approximately, including all closed basins entirely within the 

RECORDS AVAILABLE.--Chemical analyses: September 1926 to September 1928, October 1942 to February 194

September 1957. 

Water temperatures: February 1954 to January 1956.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Nov. 5 ............

Scut. 4............

Mean 

discharge 

(cfs)

459 

496 

478 

1,650 

417 

479

2,240 

714 

1,020 

2,970 

959 

736

Silica 

(810.)

Iron 

(Fe)

Calcium 

(Ca)

111 

110 

116 

114 

118 

118

78 

73 

94 

88 

103 

53

Magnesium 

(Mg)

46 

46 

42 

41 

40 

40

36 

38 

35 

32 

34 

38

Sodium 

(Na)

Potassium 

(K)

174 

167 

176 

169 

181 

222

152 

184 

169 

149 

157 

181

Bicarbonate 

(HCO,)

201 

199 

209 

202 

210 

222

a 128 

bl32 

178 

144 

190 

c91

Carbonate 

(CO,)

Sulfate 

(SO,)

415 

409 

412 

403 

414 

489

370 

389 

384 

361 

369 

374

Chloride 

(Cl)

175 

167 

172 

165 

175 

178

130 

160 

142 

128 

140 

155

Fluorlde 

(F)

Nitrate 

(NO,)

1.4 

2.0 

1.8 

2.9 

1.9 

.7

.1 

.6 

.1 

.1 

1.1 

.3

Bo

ron 

(B)

a Includes equivalent of 2 parts per million of carbonate (CO,), 

b Includes equivalent of 4 parts per million of carbonate (CO,), 

c Includes equivalent of 10 parts per million of carbonate (CO,).
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPER

GILA GRAVITY MAIN CANAL AT IMPERIAL DAM, ARIZ

LOCATION. At gaging station on right bank, 3,200 ft. downstream from intake at east end of Imper

RECORDS AVAILABLE. Water temperatures: January 1956 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 89°F July 30 to Aug. 1; minimum, 48°F Dec. 10-12

EXTREMES, January 1956 to September 1957.--Water temperatures: Maximum, 89'F July 27-29, 1956, July 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1513.

Temperature (°F) of water, January to September 19

Day

2...................

4...................

5. ..................

6...................

7...................

9. ..................

10. ..................

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

12...................

14. ..................

15...................

16. ..................

17...................

18. ..................

19...................

20...................

21...................

22. ..................

23...................

24. ..................

25...................

26. ..................

27. ..................

29. ..................

30. ..................

31...................

October

max min

November

max min

December

max min

January

max

58 

58 

58

57 

58 

59 

59 

57 

56

--

min

57 

57 

57

56 

57 

58 

57 

56 

55

--

February

max

55 

53 

51 

51 

50

52 

53 

52 

52 

52

52 

54 

55 

58 

59

58 

54 

53 

52 

54

56 

57 

59 

59 

60

60 

60 

59 

59

55

min

53 

51 

50 

50 

50

50 

50 

51 

51 

50

51 

53 

54 

56

57

55 

52 

52 

51 

52

54 

56 

57 

58 

58

58 

58 

57 

57

53

March

CQ&X

60 

61 

63 

64 

63

62

58 

57 

57 

59

61 

60 

56 

56 

56

57 

59 

60 

61 

62

64 

64 

66 

67 

67

68 

68 

66 

66 

65 

66

62

min

57 

57 

60 

62 

61

59 

56 

56 

55 

57

59 

56 

55 

54 

54

55 

56 

57 

58 

60

61 

62 

62 

65 

66

67 

66 

64 

64 

64 

64

60

April

max

64 

62 

62 

62 

64

66 

68 

68 

70 

69

68 

67 

66 

65 

65

65 

66 

68 

69 

76

71 

72 

73 

73 

72

70 

69 

69 

70 

71

68

min

61 

60 

60 

60 

62

64 

65 

66 

68 

68

66 

66 

65 

64 

63

64 

64 

66 

67 

68

69 

70 

71 

71 

70

69 

67 

66 

67 

68

66
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DA

GILA GRAVITY MAIN CANAL AT IMPERIAL DAM, ARIZ.-CALI

Temperature (°F) of water, water year October 1956 to Septem

Day

3...................

4. ..................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

12...................

13. ..................

14...................

15...................

16...................

17...................

20. ..................

21...................

23...................

24...................

25...................

27...................

28. ..................

29. ..................

30. ..................

31...................

October

max

82 

82 

81 

80 

78

78 

76 

76 

76 

75

74 

74 

73 

72 

72

72 

72 

72 

72 

72

72 

72 

73 

72 

68

65 

65 

65 

64 

63 

63

73

min

81 

80 

79 

78 

77

76 

75 

74 

74 

74

74 

72 

71 

71 

70

70 

70 

70 

70 

71

71 

71 

72 

68 

65

64 

64 

64 

63 

63 

62

71

November

max

63 

64 

61 

59 

58

57 

58 

59 

61 

62

62 

62 

62 

61 

58

56 

55 

55 

55 

54

50 

50 

51 

52 

53

54 

55 

56 

56 

56

57

min

62 

63 

59 

58 

56

56 

57 

59 

60 

61

61 

61 

61 

59 

57

55 

55 

55 

54 

51

49 

50 

50 

51 

52

53 

54 

55 

56 

56

56

December

max

56 

56 

55 

54 

55

55 

56 

55 

52 

49

48 

49 

50 

51 

52

52 

52 

52 

52 

52

52 

52 

50 

49 

48

49 

50 

50 

50 

50 

50

52

min

56 

55 

54 

54 

54

54 

55 

52 

49 

48

48 

48 

49 

50 

51

51 

52 

52 

52 

52

52 

52 

50 

49 

48

49 

50 

50 

50 

50 

50

51

January

max

50 

50 

51 

52 

52

53 

53 

55 

54 

54

55 

55 

56 

57 

58

58 

57 

53 

53 

52

52 

52 

52 

52 

53

54 

54 

54 

53 

51 

50

53

min

50 

50 

50 

51 

52

52 

53 

53 

54 

54

53 

53 

54 

58 

58

57 

53 

53 

53 

52

51 

51 

51 

51 

52

53 

54 

53 

51 

50 

50

53

February

max

51 

51 

52 

53 

54

54 

54 

56 

57 

59

60 

61 

61 

62 

62

63 

63 

63 

62 

62

62 

61 

62 

62 

62

63 

64 

65

59

min

50 

51 

51 

52 

53

54 

54 

54 

56 

57

59 

60 

60 

61 

61

62 

62 

62 

61 

61

61 

60 

61 

61 

61

61 

63 

64

58

March

max

65 

65 

65 

65 

66

66 

67 

68 

67 

66

66 

66 

65 

64 

64

64 

63 

63 

63 

64

65 

64 

62 

60 

61

63 

65 

65 

65 

65 

66

65

min

64 

64 

64 

64 

64

64 

65 

66 

65 

64

64 

64 

64 

63 

63

63 

62 

62 

62 

62

63 

62 

60 

59 

59

61 

63 

64 

64 

63 

64

63

April

max

65 

63 

64 

65 

67

68 

67 

67 

68 

69

69 

70 

70 

70 

70

69 

68 

68 

67 

67

66 

63 

63 

65 

68

71 

72 

71 

72 

72

68

min

63 

62 

62 

63 

64

66 

66 

66 

66 

67

68 

68 

68 

69 

68

68 

67 

66 

65 

66

63 

62 

61 

63 

65

68 

70 

69 

70 

70

66

m
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERI

YUMA MAIN CANAL BELOW COLORADO RIVER SIPHON, 

LOCATION. At gaging station on Yuma Main Canal below Colorado River Siphon on Arizona side of r

plant, and a quarter of a mile downstream from upper highway bridge over Colorado River at Yu

RECORDS AVAILABLE. Chemical analyses: September 1926 to September 1928, October 1942 to Septem

EXTREMES, 1956-57.--Dissolved solids: Maximum, 1,000 ppm Jan. 1-31; minimum, 791 ppm Aug. 1-31.

Hardness: Maximum, 478 ppm July 1-31; minimum, 388 ppm Aug. 1-31.

Specific conductance: Maximum, 1,520 micrombos Jan. 16; minimum, 1,230 micromhos Aug. 21-22. 

EXTREMES, 1943-57. Dissolved solids: Maximum, 1,000 ppm Jan. 1-31, 1957; minimum, 532 ppm Jan. 

Hardness: Maximum, 47S ppm July 1-31, 1957; minimum, 260 ppm Jan. 1-10, 1953.

Specific conductance: Maximum, 1,520 micromhos Jan. 16, 1957; minimum, 795 micromhos Jan. 5, 

REMARKS.--Records of specific conductance of daily samples available in district office at Albuq

October 1956 to September 1957 given in WSP 1513.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 1-31, 1956 ..

Jan. 1-31, 1957 ..

Sept. 1-30 .......

Weighted average

Mean 

discharge 

(cfs)

386 

375 

245 

243 

402 

433

415 

478 

538 

600 

506 

600

435

Silica 

(SiO,)

16 

14 

13 

15 

12 

15

16 

14 

17 

8.2 

8.8 

7.9

13

Iron 

(Fe)

0.00 

.00 

.00 

.00 

.00 

.01

.00 

.00 

.01 

.00 

.00 

.00

0.00

Calcium 

(Ca)

105 

106 

109 

110 

109 

109

106 

105 

102 

134 

108 

108

110

Magnesium 

(Mg)

36 

38 

39 

41 

38 

35

34 

33 

33 

35 

29 

31

34

Sodium 

<Na)

144 

148 

152 

155 

148 

140

134 

137 

137 

106 

106 

114

131

Potassium 

(K)

5.8 

5.8 

5.8 

5.8 

5.8 

5.8

5.6 

5.6 

5.6 

4.7 

4.7 

4.7

5.4

Bicarbonate 

(HCO,)

169 

177 

184 

188 

181 

172

170 

169 

168 

178 

176 

180

175

Sulfate 

(SO,)

384 

392 

396 

398 

391 

376

363 

364 

354 

385 

317 

325

366

Chloride 

(Cl)

133 

138 

141 

148 

139 

128

121 

127 

126 

122 

106 

120

127

Fluoride 

(F)

0.4 

.4 

.5 

.4 

.4 

.3

.4 

.3 

.4 

.4 

.4 

.4

0.4

Nitrate 

(NO,)

1.9 

1.5 

1.6 

1.1 

1.4 

2.0

2.0 

1.6 

1.8 

.2 

.2 

2.1

1.4

Boron 

(B)

0.3

.3

.34 

.2

.24 

.2

.2

.2

.2

.2

.2

.2

0.2
PART 10. THE GREAT BASIN

SEVIER LAKE BASIN 

SEVIER RIVER NEAR LYNNDYL, UTAH

LOCATION. At bridge on State Highway 125, li miles upstream from gaging station, which is 3i mi

DRAINAGE AREA. 6,270 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: March 1951 to September 1957.

Water temperatures: March 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 2,570 ppm Jan. 21-31; minimum, 834 ppm Feb. 9-12

Hardness: Maximum, 1,000 ppm Jan. 21-31; minimum, 384 ppm July 1-10.

Specific conductance: Maximum daily, 4,180 micromhos Jan. 20; minimum daily, 1,410 micromhos 

Water temperatures: Maximum, 81°F July 15, 16; minimum, 33°P Jan. 20, 29-31. 

EXTREMES, 1951-57. Dissolved solids: Maximum, 4,650 ppm Jan. 16-22, 1955; minimum, 512 ppm Mar

Hardness: Maximum, 1,710 ppm Jan. 16-22, 1955; minimum, 248 ppm Mar. 9-12, 1955.

Specific conductance: Maximum daily, 7,040 micromhos Jan. 21, 1955; minimum daily, 855 micromh

Water temperatures: Maximum, 85*F July 21-23, 1956; minimum, 33°F on many days during winter 

REMARKS. Records of specific conductance of daily samples available in district office at Salt 

October 1956 to September 1957 given in WSP 1514.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-10, 1956... 

Oct. 11-20 .......

Oct. 21-31 .......

Dec. 1-10........

Dec. 11-20.......

Jan. 1-10, 1957... 

Jan. 11-20 .......

Jan. 21-31 .......

Feb. 9-12........

Feb. 13-20.......

Feb. 21-28.......

Mar. 11-20. ......

Mar. 21-31. ......

Mean 

discharge 

(cfs)

32.8 

37.2 

41.3 

37.5 

40.1 

41.5

41.9 

44.4 

42.7 

21.1 

17.4 

17.0

17.4 

36.5 

32.0 

42.5 

42.8 

33.3 

21.1

Silica 

(SiO.)

14 

14 

13 

13 

15 

16

16 

16 

16 

17 

22 

22

21

14 

15 

15 

15 

18 

19

Iron 

(Fe)

Calcium 

(Ca)

73 

70 

79 

82 

87 

88

91 

88 

98 

131 

152 

162

154 

74 

102 

96 

101 

109 

129

Magnesium 

(Mg)

79 

77 

81 

83 

86 

76

79 

75 

92 

125 

139 

145

135 

54 

94 

102 

92 

98 

118

Sodium 

(Na)

209 

183 

185 

198 

206 

190

196 

178 

229 

459 

539 

544

530 

145 

265 

251 

250 

288 

418

Potasslum 

(K)

5.6 

5.1 

5.3 

5.3 

5.3 

3.9

4.2 

4.2

4.7 

6.0 

7.6 

8.0

7.6 

3.7 

6.9 

5.9 

6.1 

6.5 

7.6

Bicarbonate 

(HCO,)

273 

269 

282 

290 

302 

306

315 

299 

324 

346 

382 

417

380 

248 

269 

296 

300 

312 

310

Sulfate 

(SOJ

278 

251 

270 

281 

294 

249

261 

243 

311 

559 

658 

674

656 

188 

392 

374 

350 

386 

546

Chloride 

(Cl)

325 

295 

305 

330 

340 

300

310 

290 

370 

675 

775 

805

770 

230 

415 

405 

395 

450 

640

Fluoride 

(F)

Nitrate 

(NO,)

2.5 

2.1 

3.9 

2.8 

3.1 

2.2

2.8 

2.2 

2.5 

2.5 

2.2 

2.2

2.5 

3.1 

2.5 

1.9 

2.5 

2.6 

2.2

Boron 

(B)

0.2

.2

.2

.2

.2

.1

.2

.1

.2

.4

.5

.5

.5

.2

.2

.2

.3

.3

.4
Apr. 1-10, 1957... 

Apr. 11-16.......

Apr. 17-20.......

Apr. 27-30, May 1- 

10. .............

May 22-27 .......

May 28-30. .......

May 31, June 1-10.

June 21-30 .......

July 21-31. .......

Aug 1-10

Aug. 21-31.......

Sept. 1-10. .......

Sept. 21-30 ......

Weighted average

19.8

144

97.7

488

34.3

118

18

19

21

13

20

134

86

OQ

71

83

122

88

7C

70

79

68

424

947

271

295

223

254

8.2 4 q

6.5 4 0

6.2

4.9 4 9 5 O

4.0

5.5

328

294

296

9QK

278

289

548 

454

350

VGA

322

OQfl

O«O

272

298

650

408

400

340

350

1.7 8 0

7.2 8

17

3

0

4

0

2.3

5.5

.50

.32

.39

O

.30

0.32
214 THE GREAT BASIN 

SEVIER LAKE BASIN Cont inued 

SEVIER RIVER NEAR LYNNDYL, UTAH Continued 

Temperature (°F) of water, 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

Average

Oct.

69

69

69

69

69

69

67

64

59

59

60

61

61

61

61

61

61

54

56

56

56

56

44

44

44

53

49

49

46

46

46

58

Nov.

46

48

48

50

50

50

50

50

50

50

50

50

50

39

35

36

36

36

35

35

35

35

35

35

36

36

36

36

36

36

--

42

Dec.

36

37

37

37

37

34

34

34

34

37

37

37

39

39

39

39

39

35

35

35

35

34

34

34

34

34

34

34

34

34

34

36

Jan.

34

34

34

34

34

34

34

35

35

35

35

35

35

35

35

35

35

35

35

33

35

35

35

35

35

35

35

35

33

33

33

35

Feb.

35

35

35

35

35

35

35

35

46

46

46

46

51

51

51

50

50

54

54

54

54

54

54

54

54

54

54

56

__

._

--

47

Mar.

56

51

51

51

54

56

61

56

56

54

54

52

50

54

54

54

58

56

58

58

49

56

56

56

56

60

57

60

54

54

54

55

Apr.

54

54

54

54

54

54

56

60

64

67

70

71

71

64

64

64

53

53

56

53

54

54

60

60

--

..

60

60

62

64

--

59

May

64

68

68

72

72

64

64

64

64

64

68

68

65

65

65

65

65

58

58

58

58

60

60

62

70

70

72

70

70

70

74

66

June

_

74

74

74

74

74

74

74

72

70

70

70

71

72

72

72

73

71

71

71

72

74

74

78

78

78

73

73

73

73

73

July

72

72

72

72

74

74

76

76

76

76

79

76

76

76

81

81

79

78

78

78

78

80

80

80

78

75

_.

78

78

79

79

77

Aug.

78

76

76

76

76

75

75

75

75

75

75

78

78

78

78

77

78

77

77

76

74

76

72

72

72

72

70

70

68

68

70

75

Sept.

70

72

73

72

72

72

72

72

72

70

70

70

70

68

68

68

67

68

68

70

70

70

70

70

70

70

70

69

69

69

--

70
CARSON RIVER BASIN 

EAST FORK CARSON RIVER NEAR GARDNERVILLE, N

LOCATION. Temperature recorder at gaging station, 3 miles downstream from Leviathan Creek, and 

DRAINAGE AREA. 344 square miles.

RECORDS AVAILABLE. Water temperatures: July 1955 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 74°F July 16, Aug. 21-24, Sept. 7, 8; minimum, 

EXTREMES, 1955-57. Water temperatures: Maximum, 79°F Aug. 4, 1955; minimum, freezing point Dec

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1514.

Temperature (°F) of water, water year October 1956 to Septem

Day

1............ .......

3...................

4...................

5. ..................

6...................

7...................

8...................

9. ..................

10...................

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

12...................

13...................

14...................

15...................

16...................

17...................

18...................

19...................

20. ..................

21...................

22...................

24...................

25...................

26. ..................

27. ..................

28...................

29...................

30. ..................

31...................

Average .......

October

max

63 

60 

61 

60 

63

62

57 

58 

60 

59

54 

54 

56 

56 

56

56 

56 

51 

55 

55

55 

54 

48 

44 

49 

49 

47 

45 

44 

42 

43

54

mln

54 

54 

51 

54 

53

53 

52 

50 

50 

52

49 

47 

47 

47 

46

46 

46 

47 

46 

45

47 

45 

40 

37 

39 

45 

43 

41 

39 

41 

38

47

November

max

40 

46 

44 

46 

48

48 

48 

49 

50 

49

48 

47 

44 

43 

42

42 

43 

44 

40 

37

37 

37 

38 

38 

38 

39 

38 

37 

38 

38

43

min

38 

40 

39 

39 

41

42 

42 

42 

43 

43

43 

42 

41 

38 

37

38 

38 

40 

37 

35

35 

35 

35 

35 

35 

35 

35 

35 

35 

35

38

December

max

38 

38 

39 

41 

39

37 

37 

37 

37 

37

40 

39 

42 

40 

38

40 

39 

39 

38 

37

37 

37 

37 

37 

37 

36 

36 

36 

36 

35 

35

38

min

35 

35 

35 

37 

37

36 

35 

35 

35 

35

35 

36 

38 

37 

35

36 

35 

35 

35 

35

36 

35 

35 

35 

34

34 

33 

33 

33 

34 

34

35

January

max

36 

35 

36 

35 

35

35 

35 

35 

35 

35

35 

35 

35 

35 

35

35 

35 

36 

36 

36

37 

37 

37 

36 

36 

37 

37 

37 

37 

37 

37

36

min

34 

34 

34 

34 

34

33 

33 

34 

33 

33

33 

35 

34 

33 

33

34 

34 

34 

34 

35

35 

36 

34 

35 

35 

36 

35 

35 

35 

35 

34

34

February

max

36 

36 

37 

37 

36

36 

36 

40 

38 

41

43 

42 

42 

41 

43

45 

43 

46 

46 

43

45 

45 

44 

41 

45 

45 

47 

46

42

min

35 

35 

34 

35 

34

35 

36 

36 

36 

36

37 

37 

39 

37 

40

40 

39 

40 

40 

40

40 

41 

41 

40 

39 

41 

41 

42

38

March

max

47 

46 

44 

44 

47

51 

49 

49 

50 

48

48 

48 

45 

48 

47

46 

47 

45 

50 

50

48 

50 

50 

52 

53 

55 

54 

53 

53 

50 

51

49

min

42 

42 

39 

41 

43

44 

43 

43 

43 

40

41 

43 

38 

38 

41

38 

39 

40 

40 

41

40 

40 

39 

42 

45 

45 

44 

48 

46 

41 

45

42

April

max

48 

51 

53 

55 

51

51 

50 

50 

53 

53

50 

52 

52 

53 

50

50 

46 

50 

48 

49

50 

55 

56 

55 

54 

54 

55 

55 

53 

52

52

min

43 

40 

43 

45 

46

45 

40 

43 

43 

45

43 

42 

43 

45 

42

44 

42 

39 

41 

43

43 

47 

46 

45 

46 

45 

45 

45 

44 

44

44
HUMBOLDT RIVER BASIN 

HUMBOLDT RIVER NEAR RYE PATCH, NEV.

LOCATION. Below Rye Patch Dam, 1,000 feet upstream from gaging station, and 2 miles northwest of 

DRAINAGE AREA. 13,700 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: December 1951 to September 1957.

Water temperatures: December 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids; Maximum, 752 ppm Dec. 10-13, 18; minimum, 374 ppm Feb. 13-

Hardness: Maximum, 260 ppm Feb. 1-10; minimum, 117 ppm Feb. 13-15.

Specific conductance: Maximum daily, 1,340 micromhos Jan. 21; minimum daily, 468 micromhos Feb

Water temperatures: Maximum, 69°F Sept. 16-19, 22; minimum, 33°F Jan. 8-13. 

EXTREMES, 1951-57. Dissolved solids: Maximum, 2,190 ppm Sept. 1-5, 1954; minimum, 253 ppm June 

Hardness: Maximum, 482 ppm Sept. 1-5, 1954; minimum, 117 ppm Feb. 13-15, 1957.

Specific conductance: Maximum daily, 4,010 micromhos Sept. 2, 1954; minimum daily, 384 micromh

Water temperatures, 1951-54, 1956-57: Maximum, 76°F July 31, Aug. 1, 1952; minimum, 33"F Jan. 

REMARKS. Records of specific conductance of daily samples available in district office at Salt L

October 1956 to September 1957 given in WSP 1514. No appreciable inflow between gaging statio

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-10, 1956 ...

Dec. 10-13, 18 .... 

Dec. 14-17, 19-20 .

Jan. 1-10, 1957 ...

Feb. 11-12, 16-20 .

Mar. 21-31 .......

Mean 

discharge 

(cfs)

79.1 

52.5 

.6 

.8 

.8 

.8

.7 

.7 

.7 

.7 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6 

.6 

.6

Silica 

(SiO.)

38 

43 

42 

44 

38 

40

40 

52 

29 

40 

40 

44 

53

51 

42 

24 

39 

39 

39 

40

Iron 

(Fe)

Calcium 

(Ca>

47 

58 

53 

58 

46 

46

47 

70 

34 

48 

47 

49 

68

68 

52 

28 

47 

51 

52 

50

Magnesium 

(Mg)

18 

19 

19 

19 

18 

18

18 

18 

14 

18 

20 

20 

22

22 

21 

12 

20 

18 

17 

18

Sodium 

(Na)

103 

119 

119 

124 

108 

117

122 

168 

96 

129 

132 

138 

164

167 

146 

81 

142 

149 

139 

142

Potassium 

(K)

15 

12 

11 

12 

15 

16

16 

7.1 

12 

17 

17 

17 

6.7

7.2 

13 

9.7 

17 

19 

17 

19

Bicarbonate 

(HCO,)

340 

327 

323 

324 

a 340 

339

346 

315 

260 

349 

352 

362 

322

320 

328 

202 

344 

348 

347 

343

Sulfate 

(SO.)

71 

80 

80 

82 

72 

73

77 

91 

57 

79 

79 

83 

95

93 

85 

49 

87 

88 

84 

84

Chloride 

(Cl)

62 

108 

102 

118 

65 

70

75 

182 

63 

85 

90 

95 

190

190 

135 

64 

120 

115 

109 

110

Fluoride 

(F)

Nitrate 

(NO,)

1.1 

1.1 

1.1 

1.1 

1.1 

.6

.6 

1.0 

.7 

1.1 

1.2 

.2 

.2

.2 

.4 

.6 

1.1 

.4 

.5 

.4

Boron 

(B)

0.51 

.54 

.62 

.58 

.55 

.59

.60 

.72 

.48 

.60 

.66 

.67 

.68

.67 

.64 

.50 

.69 

.74 

.75 

.75
Apr. 1-10, 1957...

Apr. 21-24, 26-30 

Apr. 25..........

June 11-20 .......

July 21-31 .......

Weighted average

65.8 

332 

349 

363 

647 

454 

366

390 

210 

343 

629 

526 

338

166 

299 

334 

313 

174 

1.5

170

36 

39 

39 

38 

35 

34 

34

37 

39 

37 

41 

46 

44

44 

46 

44 

46 

44 

43

40

50 

52 

50 

51 

47 

48 

48

49 

49 

49 

51 

52 

53

50 

50 

49 

49 

47 

47

50

18 

18 

18 

17 

16 

14 

14

14 

13 

13 

12 

13 

13

18 

15 

16 

15 

17 

18

15

145 

141 

134 

141 

116 

103 

93

87 

78 

79 

84 

85 

94

100 

97 

97 

101 

101 

101

100

18 

17 

15 

16 

14 

12 

12

12 

10 

10 

11 

11 

12

14 

15 

15 

' 14 

15 

15

13

346 

340 

329 

332 

306 

289 

281

280 

273 

275 

285 

305 

319

334 

337 

343 

342 

344 

342

309

86 

83 

83 

80 

76 

69 

64

66 

59 

59 

65 

62 

68

72 

64 

59 

64 

63 

66

68

111 

112 

105 

112 

90 

75 

65

63 

53 

54 

51 

51 

52

50 

50 

50 

51 

51 

52

67

.2 

.3 

.4 

.8 

.4 

.5 

.3

.5 

2.5 

2.9 

3.4 

2.7 

2.3

1.5 

1.6 

1.2 

1.2 

1.2 

1.3

1.4

.7

.7

.6

.5

.5

.4

.3

.3

.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

0.4

a Includes equivalent of 9 parts per million of carbonate (CO,), 

b Calculated from determined constituents.
THE GREAT BASIN

HUMBOLDT RIVER BASIN Continued 

HUMBOLDT RIVER NEAR RYE PATCH, NEV. Continued

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

Average

Oct.

60

60

60

60

60

60

60

60

60

60

60

60

60

59

59

57

58

58

58

58

58

58

56

55

54

54

54

52

51

42

42

57

Nov.

41

41

41

41

41

45

46

46

42

41

44

46

42

42

42

41

41

40

40

40

39

39

39

40

40

40

40

40

40

40

--

41

Dec.

41

41

41

39

39

39

38

35

35

34

34

35

35

35

35

35

35

35

35

35

35

35

35

35

35

35

35

35

35

34

34

36

Jan.

35

34

34

34

34

34

34

33

33

33

33

33

33

34

34

34

34

34

34

35

35

35

35

35

35

35

34

34

34

34

34

34

Feb.

34

34

34

34

34

34

35

35

35

35

36

36

37

37

38

38

38

38

38

38

38

38

38

38

39

39

40

40

_

--

37

Mar.

39

39

38

39

38

38

39

40

42

43

44

45

45

46

47

47

47

47

47

47

47

47

47

47

47

47

47

48

48

48

44

Apr.

48

48

48

48

48

48

47

47

47

47

47

47

47

47

48

47

47

47

47

47

47

47

47

47

47

47

47

47

47

47

47

May

47

47

48

48

50

50

51

51

51

51

51

51

51

51

51

52

52

52

52

52

52

52

52

52

52

53

52

52

52

52

52

51

June

53

53

53

55

56

56

56

57

58

64

65

65

65

65

67

65

65

67

65

65

65

65

65

65

65

65

65

66

66

66

62

July

66

66

66

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

68

68

68

68

68

68

68

68

67

Aug.

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

Sept.

68

68

67

67

67

67

67

67

67

67

67

67

67

67

67

69

69

69

69

68

68

69

67

66

65

64

63

62

62

61

67
PYRAMID AND WINNEMUCCA LAKES BASIN

MISCELLANEOUS ANALYSES OF STREAMS AND LAKES IN PYRAMID AND WINNEMUCC

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Discharge 

(efs)

Silica 

(SiO,)

Iron 

(Fe)

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium 

(Na)

Potassium 

(K)

Bicarbonate 

(HCO,)

Sulfate 

(SOJ

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Boron 

(B)

LAKE TAHOE (SOUTH END) BIJOU (SEC. 35, T. 13 N. , 

Oct. 19, 1956.... 

Apr. 12, 1957....

Seat. 20 ......... 18 .00

9.6 

8.0 

9 2

10

2.4 

2.4 

1 9

1.7

6.1 

5.2

6.7

1.7 

1.4

2.1

57 

46

en

51 0.9

2.4 

1.5 

2 2

2.8 .0 .2

0.01 

.05

.00 

LAKE TAHOE (NORTH END) TAHOE VISTA (SEC. 14, T. 16 N

Oct. 18, 1956.... 

Apr. 12, 1957....

9.4 

8.8

9 4

2.6 

2.9 

1 9

1 8

5.9 

5.9

5 7

1.6 

1.6

56 

50 

52

53

1 9

2.3 

2.0

3 0

0.07 

.00

LAKE TAHOE (WEST SIDE) TAHOE CITY (SEC. 7, T. 15 N

Oct. 18, 1956.... 

Apr. 12, 1957....

Sent. 19.........

13

_

14 .00

9 3 

9.2 

9 3

9.1

2.9 

2.7

2.6

5.6 

5.9

6.6

1.7 

1.6

2.0

56 

51

CO

CO

56

2 3

.0

1.7 

1.5

2

0

3.2 .0

__

.5

0.05 

.08 

03

.01 
PYRAMID AND WINNEMUCCA LAKES BASIN Contin

MISCELLANEOUS ANALYSES OF STREAMS AND LAKES IN PYRAMID AND WINNEMUCCA 

Chemical analyses, in parts per million, water year October 1956 to Sep

Date of collection

Discharge 

(cfs)

Silica 

(SiOa)

Iron 

(Fe)

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium 

(Na)

Potassium 

(K)

Bicarbonate 

(HCO.)

Sulfate 

(S0«)

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Bo

ron 

(B)

TRUCKEE RIVER NEAR TRUCKEE (SEC. 28, T. 17 N., 

Oct. 18, 1956.... 

Apr. 11, 1957....

329 

211

9Rf\

4QO

9.6 

7.8

9 8'

2.0 

2.1

2 1

6.2 

3.1

2 7

1.8 

.8

57 

35

«9

«q

en

en

1.0 

.5

2

e

0.0

.0

TRUCKEE RIVER AT FARAD (SEC. 29, T. 18 N., R. 

Oct. 18, 1956.... 

Apr. 11, 1957.... 

mfav o

Seot. 19 .........

560 

1,085

594 19 .02

9.2

7.4

9.4

2.6 

2.1

1 9

2.1

5.6 

3.1

6.4

1.7 

1.0

2.0

57 

39

38

49 2.9

1.0 

.5

1 9

3.2

_

.0 .2

0.0

.0

.0

HONEY LAKE BASIN

MISCELLANEOUS ANALYSES OF STREAMS IN HONEY LAKE BASI

SUSAN RIVER AT SUSANVILLE (SEC. 31, T. 30 N., 

Oct. 17, 1956.... 

Apr. 11, 1957....

Seot. 19 .........

13 

114

7 Q

6.0 41 .06

15 

11

1 9

19

7.4 

4.1

3

0

8.6

5.8 

3.4

7.2

2.0 

.8

1 9

2.8

101 

60

119 1.0

0.2 

.5

.8

_

.0 .3

0.

.

.
PART 11. PACIFIC SLOPE BASINS IN CALIFORN

SANTA CLARA RIVER BASIN 

MISCELLANEOUS ANALYSES OF STREAMS IN SANTA CLARA RIVER BAS

Periodic determinations of particle size and discharge of suspended sediment, water yea

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, plpet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

Jan. 13, 1957 ....

Time

Discharge 

(cfs)

Water 

temperature 

(°F)

Suspended se

Concentration of 

sample 

(ppm)

Discharge 

(tons per 

day)

Concentration of 

suspension 

analyzed 

(ppm)

drem? rroireif o£*8r£t ClUiJUl

10:45 a.m. 

10:30 a.m. 

1:45 p.m.

2,340 

97 

1,570

55 

47 

57

10,200 

381 

3,520

64,400 

100 

14,900

5,540 

1,050 

4,040

Percent fin

0.004 0.008

NEAR FILLMORE

43 

44 

34

0.016

74 

76 

60

VENTURA RIVER BASIN

MISCELLANEOUS ANALYSES OF STREAMS IN VENTURA RIVER BASI

NORTH FORK MATILIJA CREEK AT MATILIJA HOT SPRING

Periodic determinations of particle-size and discharge of suspended sediment, water ye

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

Date 

of 

collection

Jan. 13, 1957 ....

Time

10:05 a.m. 

11:15 a.m. 

10:00 a.m.

Discharge 

(cfs)

47 

7.8 

58

Water 

temperature 

(°F)

51 

48 

52

Suspended sed

Concentration 

of sample 

(ppm)

2,800 

292 

3,540

Discharge 

(tons per 

day)

355 

6.1 

507

Concentra 

tion of 

suspension 

analyzed 

(ppm)

3,300 

4,440

Percent fine

0.004

46 

43

0.008 0.016

72 

72
SANTA MARIA RIVER BASIN

MISCELLANEOUS ANALYSES OF STREAMS IN SANTA MARIA RIVER BAS

CUYAMA RIVER NEAR SANTA MARIA

Periodic determinations of particle size and discharge of suspended sediment, water yea

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, i

Date 

of 

collection

Jan. 15, 1957 ...

Time

9:35 a.m. 

12:25 p.m. 

10:20 a.m.

Discharge 

(cfs)

64 

16 

8.0

Water 

temperature 

(°F)

Concentration of 

sample 

(ppm)

84, 000 

45, 200 

25,000

Discharge 

(tons per 

day

15, 100 

2,060 

540

Suspended sed

Concentration of 

suspension 

analyzed 

(ppm)

4,010 

3,950 

4,620

Percent fine

0.004

68 

81 

85

0.008 0.016

94 

99 

99
CARMEL RIVER BASIN

CARMEL RIVER NEAR CARMEL, CALIF.

LOCATION. On right bank approximately 30 feet below Rancho San Carlos bridge, 2 miles east of Carmel

RECORDS AVAILABLE.--Chemical analyses: October 1953 to August 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, October 1956 to Augu

Date of collection

Dec. 18 ............

Feb. 20 ............

Aug. 21 ............

Mean 

discharge 

(cfs)

Silica 

<SiOa)

23

Iron 

(Fe)

0.02

Calcium 

(Ca)

51 

60 

56 

53 

44 

30

37 

38 

40

Magnesium 

(Mg)

23 

20 

21 

16 

15 

9.0

11 

11 

11

Sodium 

(Na)

44 

41 

43 

37 

31 

18

23 

24 

26 

39 

48

Potassium 

(K)

3.7 

3 8 

3.7 

3.2 

2.8 

2. 1

2.5 

2.4 

2.7

Bicarbonate 

(HCOS)

178 

183 

180 

160 

149 

104

128 

a 132 

136 

168 

167

Carbonate 

(CO,)

Sulfate 

(S04)

50

Chloride 

(Cl)

58 

54 

52 

44 

34 

19

26 

25 

28 

46 

62

Fluoride 

(F)

0.3

Nitrate 

<NOS)

0.0

B

ro

(B

0

a Includes equivalent of 3 parts per million of carbonate (CO3 ).
PAJARO RIVER BASIN 

UVAS CREEK NEAR MORGAN HILL, CALIF.

LOCATION. At gaging station 500 feet upstream from Uvas Dam, 0.6 mile downstream from Eastman Ca

County.

DRAINAGE AREA. 30.2 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957 

REMARKS. Records of discharge for October 1956 to April 1957 given in WSP 1515.

Chemical analyses, in parts per million, November 1956 to Se

Date of collection

Nov. 16, 1956 ....

Jan. 16, 1957..... 

Feb. 20..........

June 19 ..........

Sept. 13..........

Discharge 

(cfs)

5.3 

3.8 

52

--

--

Silica 

(SiO.)

"

19

26

Iron 

(Fe)

--

0.00

.00

Calcium 

(Ca)

35 

38 

44 

45 

35

39 

45 

42

45

Magnesium 

(Mg)

24 

22 

18 

21 

16

22 

19 

15

18

Sodium 

(Na)

13 

13 

14 

15 

12

13 

13 

12 

14 

14 

15

Potassium 

(K)

0.9 

1.0 

.7 

.7 

.9

.7 

1.0 

.8

1.3

Bicarbonate 

(HCO,)

210 

210 

200 

217 

a 162

203 

206 

a 192 

198 

224 

215

Sulfate 

(SO.)

31 

32

Chlorids 

(Cl)

7.0 

5.7 

7.0 

8.6 

6.3

6.0 

6.8 

5.7 

5.2 

7.3 

8.4

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

0.2 

1.6

Boron 

(B)

0.03 

.12 

. 11 

.13 

.06

.05 

.06 

.15 

.01 

. 10 

.17

a Includes equivalent of 6 parts per million of carbonate (CO,).
PAJARO RIVER BASIN Continued 

PAJARO RIVER AT CHITTENDEN, CALIF

LOCATION. At gaging station on State Highway bridge in Salsipuedes Grant, 0.6 mile downstream 

Santa Cruz County, and 2.3 miles downstream from San Benito River. 

DRAINAGE AREA. 1,188 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, In parts

Date of collection

Oct. 11, 1956. .... 

Nov. 16..........

Jan. 16, 1957.....

Mar. 12 .........

June 19 ..........

July 17 ..........

Aug 21

Sent. 12. .........

Discharge 

(cfs)

2.7 

2.8 

4.1 

11 

4.8 

61

10 

5.8 

3.5 

.4 

.5 

1.6

Silica 

(310,)

20 

10

Iron 

(Fe)

0.15 

.01

Calcium 

(Ca)

84 

76 

38 

82 

86 

53

106 

99 

82

78

Magnesium 

(Mg)

76 

76 

91 

61 

69 

30

82 

64 

52

76

Sodium 

(Na)

206 

200 

145 

106 

120 

53

127 

154 

133 

236 

214 

197

Potassium 

(K)

5.6 

5.2 

4.4 

3.9 

3.4 

2.1

3.4 

3.2 

3.6

6.0

Bicarbonate 

(HCO.)

605 

572 

522 

460 

428 

244

430 

471 

a 464 

543 

576 

b581

per million, water year October 195

SuUate 

(SO,)

263 

219

Chloride 

(CD

196 

200 

163 

108 

120 

48

112 

131 

125 

270 

178 

159

Fluoride 

(F)

0.6 

.3

Nitrate 

(NO,)

0.7 

1.5

Bo

ro

(B

1.

.

.

.

.

.

.

1.

1.

1.

.

.

a Includes equivalent of 22 parts per million of carbonate (CO,). 

b Includes equivalent of 13 parts per million of carbonate (CO,).
SOQUEL CREEK BASIN 

SOQUEL CREEK AT SOQUEL, CALIF.

LOCATION. At gaging station,0.2 mile upstream from highway bridge in town in Sequel, Santa Cruz 

DRAINAGE AREA.--40.4 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. Iff, 1956. ....

Dec. 18..........

Jan. 17, 1957.. ...

Mar. 11. .........

May 14 ..........

Aug. 21 ..........

Sent. 12. .........

Discharge 

(cfs)

3.0 

5.7 

7.2 

8. 2 

14 

45

17 

14 

11 

5.2 

3.3 

3.3

Silica 

(Si03)

24 

35

Iron 

(Fe)

0.03 

.01

Calcium 

(Ca)

75 

82 

79 

84 

63 

55

66 

72 

76

81

Magnesium 

(Mg)

25 

24 

28 

23 

22 

14

18 

19 

19

21

Sodium 

(Na)

50 

51 

53 

52 

43 

26

38 

45 

40 

47 

48 

45

Potassium 

(K)

4.8 

4.5 

4.3 

4.0 

5.5 

2.7

3.6 

3.4 

3.9

5.1

Bicarbonate 

(HCO,)

260 

264 

249 

246 

203 

158

204 

226 

a233 

253 

246 

a 246

Sulfate 

(SO,)

107 

99

Chloride 

(Cl)

73 

70 

72 

68 

52 

22

38 

38 

41 

56 

63 

65

Fluoride 

(F)

0.3 

.1

Nitrate 

(NO,)

0.1 

.9

Boron 

(B)

0.0

.0

.0

.0

.0

.3

.1

.1

.0

.1

. 

. 

a Includes equivalent of 6 parts per million of carbonate (CO,).
SAN LORENZO RIVER BASIN

SAN LORENZO RIVER AT BIG TREES, CALIF.

LOCATION. In Canada del Rincon Grant at Sequoia Picnic and Camp Grounds at Big Trees, Santa Cruz Co

north of Santa Cruz. 

DRAINAGE AREA. 110 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Nov. 15 ............

July 17 .............

Sent. 12 ............

Discharge

(cfs)

23 

26 

26 

38 

74 

115

106 

52 

43 

27

18

Silica 

(SiOa)

21

30

Iron 

(Fe)

0.06

.02

Calcium 

(Ca)

42 

40 

41 

42 

25 

39

28 

40 

41

40

Magnesium 

(Mg)

7.9 

8.8 

8.1 

8.3 

6.2 

7.4

6.3 

7.8 

7.3

6.3

Sodium 

(Na)

23 

22 

22 

22 

16 

20

15 

20 

20 

21 

21 

22

Potassium 

(K)

2.0 

1.8 

1.7 

1.8 

1.9 

1.8

1.8 

1.6 

2.0

2.6

Bicarbonate 

(HCO,)

153 

145 

150 

134 

91 

113

95 

132 

136 

a 144 

138 

137

Carbonate 

(CO,)

Sulfate 

(SO,)

42 

29

Chloride 

(Cl)

24 

23 

23 

23 

16 

16

14 

18 

18 

22 

25 

25

Fluoride 

(F)

0.3 

.2

Nitrate 

(NO,)

0.2 

.4

0

a Includes equivalent of 6 parts per million of carbonate (CO3 ).
228 PACIFIC SLOPE BASINS IN CALIFORNIA

SAN FRANCISQUITO CREEK BASIN 

MISCELLANEOUS ANALYSES OF STREAMS IN SAN FRANCISQUITO CREEK BASIN IN CALIFORNIA

SAN FRANCISQUITO CREEK AT STAMFORD UNIVERSITY 

Periodic determinations of suspended-sediment discharge, January to May 1957

' Date

Feb. 25 ...........

Mar. 5 ............

May 21 ............

May 23 ............

Time

10:10 a.m. 

4:00 p.m. 

11:45 a.m. 

10:35 a.m. 

9:15 a.m. 

8:10 a.m. 

4:15 p.m. 

8:15 a.m. 

8:00 a.m.

Water 

temperature

CF)

46 

SB 

55

59 

54 

60 

59

58

Discharge 

(cfs)

0.1 

13 

44 

7.9 

36 

120 

78 

45 

14

Suspended sediment

Mean 

concentration 

(ppm)

4 

264 

164 

24 

35 

156 

74 

33 

17

Discharge 

(tons per day)

(t) 

9.3 

19 

.5 

3.4 

51 

16 

4.0 

.6

t Less than 0.05 ton.
GUADALUPE RIVER BASIN

LOS GATOS CREEK AT LOS GATOS, CALIF

LOCATION. At gaging station 0.3 mile downstream from Trout Creek, 0.5 mile downstream from Lexi

Clara County.

DRAINAGE AREA. 38.9 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 10, 1956.....

Dec. 18 ..........

Jan. 17, 1957 .....

July 17 ...........

Sept. 12..........

Discharge 

(cfs)

6.6 

37 

36 

1.5 

1.2 

23

8.9 

7.1 

5.9 

.8 

.4 

.5

Silica 

(810.)

15 

21

Iron 

(Fe)

0.01 

.01

Calcium 

(Ca)

41 

43 

47 

74 

78 

23

41 

78 

69

85

Magnesium 

(Mg)

15 

16 

18 

30 

31 

7.7

14 

26 

24

31

Sodium 

(Na)

13 

12 

14 

19 

24 

7.9

13 

24 

20 

27 

28 

25

Potassium 

(K)

2.2 

2.4 

2.5 

2.6 

2.4 

2.5

1.9 

3.2 

2.5

3.2

Bicarbonate 

(HCO,)

180 

183 

201 

306 

283 

69

133 

273 

a 265 

368 

338 

350

Sulfate 

(SO,)

101 

78

Chloride 

(Cl)

8.0 

8.8 

9.0 

15 

16 

6.0

9.5 

12 

67 

18 

20 

20

Fluoride 

(F)

0.3 

.2

Nitrate 

(NO,)

1.2 

.5

Bo

ron 

(B)

0.0

1.0 

.0

.0

.0

.0

.1

.1

.0

.2

.1

.0

a Includes equivalent of 8 parts per million of carbonate (CO,).
GUADALUPE RIVER BASIN

MISCELLANEOUS ANALYSES OF STREAMS IN GUADALUPE RIVER BASIN 

GUADALUPE RIVER AT SAN JOSE

Periodic determinations of particle size and discharge of suspended sedime

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P. plpet; S, sieve; V. visual accumulation tube; W, in 

Date 

of 

collection

Feb. 24, 1957 ....

Time

12:30 p.m. 

1:00 p.m. 

1:40 p.m.

Discharge 

(eta)

368 

80

77

Water 

temperature 

(°F)

63 

60

Suspended sedi

Concentration of 

sample 

(ppm)

766 

246 

274

Discharge 

(tons per 

day)

761 

53 

57

Concentration of 

suspension 

analyzed 

(ppm)

1,310

Percent finer 

0.004

70

0.008 0.016

78

0
COYOTE CREEK BASIN 

COYOTE CREEK NEAR MADRONE, CALIF.

LOCATION. At gaging station near southeast corner of La Laguna Seca Grant, 1.2 miles downstrea

Santa Clara County. 

DRAINAGE AREA. 194 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 11, 1956..... 

Nov. 16 ..........

Jan. 16, 1957.....

Sept. 13 ..........

Discharge 

(cfs)

54 

56 

36 

5.8 

58 

14

22 

81 

78 

107 

109 

98

Silica 

(S10,)

7. 5 

8.6

Iron 

(Fe)

0.02 

.00

Calcium 

(Ca)

26 

27 

32 

38 

31 

34

33 

35 

34

34

Magnesium 

(Mg)

12 

12 

13 

14 

15 

15

14 

13 

14

15

Sodium 

(Na)

13 

13 

14 

15 

15 

15

14 

15 

14 

14 

15 

15

Potassium 

(K)

2.0 

2.0 

2.2 

1.9 

1.9 

2.0

2.0 

1.9 

2.1

.8

Bicarbonate 

(HCO,)

128 

134 

149 

172 

155 

159

157 

157 

158 

162 

165 

166

Sulfate 

(S04 )

30 

27

Chloride 

(Cl)

8.5 

9.2 

9.0 

10 

9.5 

9.5

10 

10 

9.0 

10 

10 

12

Fluoride 

(F)

0.3 

.1

Nitrate 

(NO,)

0.9 

1.2

B

ro

(B

0
ALAMEDA CREEK BASIN 

ALAMEDA CREEK NEAR NILES, CALIF.

LOCATION. At gaging station, 0.3 mile downstream from railroad bridge and 1.2 miles northeast of 

DRAINAGE AREA.--633 square miles.

RECORDS AVAILABLE. Chemical analyses: February 1952 to September 1957.

Water temperatures: July 1956 to September 1957.

Sediment records: January 1957 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 704 ppm Jan. 18; minimum, 219 ppm Nov. 26 to Dec. 

Hardness: Maximum, 430 ppm Jan. 16; minimum, 144 ppm Nov. 26 to Dec. 2.

Specific conductance: Maximum daily, 1,270 micromhos Jan. 15; minimum daily. 326 micromhos Nov

Water temperatures: Maximum, 84°F June 30: minimum, 38"F Dec. 22, 24, 28, 30, Jan. 9, 10.

Sediment concentrations: Maximum daily, 736 ppm Feb. 25; minimum daily, no flow on many days.

Sediment loads: Maximum daily, 1,400 tons Feb. 25; minimum daily, no flow on many days.

REMARKS. No flow July 7 to Sept. 30; tabulation omitted for that period. Records of specific co

Sacramento, Calif. Records of discharge for water year October 1956 to September 1957 given i

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 1-11, 1956 .. 

Oct. lla ........

Oct. 23-31.......

Nov. 1-6. ........

Nov 16a

Nov. 26-Dec. 2...

Jan. 1-9, 1957 ... 

Jan. 10-17 .......

Jan. 16a .........

Jan. 19-31 .......

Mean 

discharge 

(cfs)

1.17 

1.3 

.9 

7.31 

21.2 

23.3 

11 

3.26 

23.4

5.22 

17.9 

9.1 

6.10 

5.44 

8.0 

7.2 

7.0 

7.83

Silica 

(SiO.)

16

18 

13 

15 

14

17 

14

16 

12

11 

13 

17

18

Iron 

(Fe)

0.01

.01 

.01 

.00 

.00

.00 

.00

.04 

.02

.02 

.00 

.01

.02

Calcium 

(Ca)

76 

58 

81 

53 

39 

27 

36 

58 

35

64 

45 

43 

52 

66 

78 

90 

78 

72

Magnesium 

(Mg)

42 

46 

44 

25 

17 

13 

14 

26 

14

30 

17 

20 

23 

32 

44 

50 

49 

43

Sodium 

(Na)

75 

80 

79 

42 

26 

20 

20 

40 

18

48 

28 

29 

35 

53 

81 

103 

87 

78

Potassium 

(K)

3.8 

3.7 

3.9 

2. 8 

2.3 

2.2 

1.7 

2.8 

2.2

3.6 

2.3 

2.2 

2.3 

2.8 

5.7 

8.4 

9.0 

12

Bicarbonate 

(HCO,)

385 

360 

391 

254 

187 

168 

173 

276 

165

297 

206 

215 

245 

311 

377 

445 

388 

343

SuUate 

(S04 )

84

93 

51 

36 

31

60 

30

68 

39

56 

67 

82

75 

87

Chloride 

(Cl)

82 

83 

95 

46 

26 

17 

15 

37 

15

53 

26 

26 

32 

54 

98 

142

98

Fluoride 

(F)

0.4

.4 

.4 

.2 

.2

.2

.2

.4 

.3

.3 

.3 

.4

.4

Nitrate 

(NO,)

0.5

.3 

.6 

1.1

.7

.8 

1.2

1.0 

1.7

1.3 

1.3 

3.8

11

Boron 

(B)

1.2 

.9

1.2 

.6

.3

.17 

.3

.57 

.1

.8

.5

.4

.7

.7

.99 

1.3 

.89 

.80
Feb. 1-22, 1957..

Feb. 23 .........

May 16a .........

June 19-July 6 ... 

June 19a .........

July 17a .........

Weighted average d

4.04

4 9

S

rae

.49

0

10.9

11

99

14

--

e!5

.01

.08

--

sO.Ol

74

QQ

73

7fl

89

7ft

a*

78

rao

74

SO

44

30

99

25

net

22

37

38 

37

--

24

75

QQ

rae

HI

72

88

36

6.6

4.9

3.9

358

MO

248

O1Q

349

9«n

01 Q

QAf\

349

348

227

92

AA

An

118

--

54

88 

07

ftfl

An

64

63

c39

.3

.4

--

cO.3

2.0

1.4

--

C3.0

1

0.

a Not included for computation of weighted averages.

b Includes equivalent of 13 parts per million of carbonate (003).

c Includes equivalent of 14 parts per million of carbonate (COj).

d Represents 100 perceut of runoff for water year Octaber 1956 to September 1957.

e Includes estimates for missing data.
PACIFIC SLOPE BASINS IN CALIFORNIA

ALAMEDA CREEK BASIN Continued 

ALAMEDA CREEK NEAR NILES, CALIF.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement, generally between 8 a.m. and 5 p.mj

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

Average

Oct.

62

64

65

64

65

63

65

60

65

60

64

58

63

55

55

60

60

56

67

54

55

58

55

58

53

55

51

55

56

55

52

59

Nov.

51

52

56

49

58

58

60

60

60

62

59

58

55

53

57

52

54

50

50

50

48

57

49

48

47

46

45

47

44

49

--

53

Dec.

51

50

48

47

46

47

44

45

40

48

52

55

54

54

50

50

50

48

46

41

41

38

40

38

45

41

45

38

41

38

40

46

Jan.

43

43

44

44

41

46

42

40

38

38

43

49

49

50

52

49

47

46

40

48

46

46

48

48

47

44

40

43

43

45

Feb.

48

-_

44

45

48

49

48

48

50

51

54

57

60

57

57

56

55

55

53

57

57

56

58

56

52

58

60

58

-_

_

--

54

Mar.

56

60

52

55

56

58

59

58

56

57

58

57

58

57

55

55

57

54

59

60

58

52

60

60

59

62

65

62

60

57

59

58

Apr.

62

65

67

59

60

59

56

59

55

56

59

57

63

57

55

52

56

58

59

65

60

64

65

61

62

61

67

67

60

May

67

65

63

64

66

65

69

62

65

60

61

64

62

64

70

64

64

62

64

64

65

67

60

61

59

61

65

65

62

63

64

64

June

65

62

70

74

72

68

67

65

65

67

70

65

67

75

72

74

81

78

70

68

74

72

70

72

68

80

71

78

84

71

July Aug. Sept.
ALAMEDA CREEK BASIN

A1.AMEDA CREEK BASIN Continued

ALAMEDA CREEK NEAR NILES, CALIF.--Continued

Suspended sediment, January to September 1957

235

Day

1......

2. .....

3. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

11......

13. .....

16. .....

17. .....

18. .....

19. .....

21......

22......

24. ..... 

25. .....

26......

27......

28. .....

30. .....

31......

Total.

1. ..... 

2...... 

3. ..... 

4. ..... 

5......

8......

10. .....

13. .....

15. .....

18. ..... 

19

20. .....

23

25......

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

January

Mean 

discharge 

(cfs)

4.9 

4.9 

4.7 

4.9 

5.6

5.9 

5.9 

6.3 

5.9 

5.4

5.4 

6.1 

9.7 

12 

11

7.2 

7.2 

7.0 

6.3 

13

16 

9.7 

7.8 

7.2 

7.0

6.8 

6.3 

6.1 

5.4 

5.1 

5.1

221.8

Suspended sediment

Mean 1 concen- Tons 

tration P" (ppm) day

5

24 

3 

19

-

> 0.1

.2 

s.7 

.6 

.2

}"

s.9 

1

> .3

8.1

April

4.4 

4.2 

4.2 

3.8 

4.4

3.7 

3.2 

5.1 

8.8 

6.9

2.8 

2.8 

2.6 

4.0 

4.0

3.8 

4.2 

11 

9.4 

6.5

5.2 

4.5 

4.2 

3.8 

3.6

2. 8 

2.6 

2. 6 

2.8 

2.7

134.6

Total for July (cfs 

Total for July (tons

9 

12

21 

15

14

10 

28

30 

22

1"

.2 

.6 

.4

1-

s.9 

.9 

.6

}'

h7.5

February

Mean 

discharge

(cfs)

4.7 

4.7 

4.4 

4.4 

4.2

4.0 

4.4 

4.7 

4.7 

4.4

4.0 

3.8 

3.7 

3.6 

3.6

3.7 

3.6 

3.8 

3.6 

3.4

4.0 

3.4 

76 

47 

698

350 

149 

100

1,508.8

Suspended sediment

Mean 

concentration 

(ppm)

13

19

37

 M

603

736

256 

100 

80

-

Tons 

per 

day

\. 0.2

> .2

.3

.3 

s269 

89 

si, 400

8248 

40 

22

2,073.0

May

2.2 

3.1 

2.7 

3.2 

3.1

2.7 

2.6 

2.4 

2.3 

4.4

5.8 

4.4 

3.7 

4.2 

3.7

2.8 

2.7 

15 

42 

27

84 

39 

19 

12 

9.4

7.8 

6.8 

5.4 

4.4 

3.7 

3.2

334.7

19 

11

12 

43

--

> 0.1

1 

4 

1

s9.9 

3 

1 

.8 

.6

h24.8

March

Mean 

discharge 

(cfs)

89 

64 

50 

44 

52

49 

41 

32 

29 

27

25 

20 

15 

12 

11

10 

8.8 

8.0 

7.2 

7.0

6.8 

6.1 

5.9 

5.2 

5

4.9 

4.9 

4.4 

4.4 

4.4 

4.5

657.6

Suspended sediment

Mean 

concentration 

(ppm)

45 

24 

14 

14 

63

15 

10

16

12 

5

--

Tons 

per 

day

11 

4.1 

1.9 

1.7 

s9.1

2.0 

 1.1 

.8 

si. 3

}' 

}'

>. .1

39.2

June

3.6 

4.2 

3.8 

3.4 

2.7

2.4 

2.1 

1.9 

1.8 

1.5

1.4 

1.4 

1.3 

1.2 

1.0

1.2 

1.1 

1.6 

1.3 

1.0

1.1 

.9 

.7 

.7 

.6

.4 

.5 

.2 

.3 

.1

45.4

16

-

)........................................................................-.

I 0.2 

> -1

^ (t)

2.7

0.11 

(t)

Total discharge for January to September (cfs-days) ............................................. 2, 904. 0 

Total load for Januarv to Seotember (tons) ................................. . 2, 159 . 3

s Computed by subdividing day. t Less than 0.05 ton.
ALAMEDA CREEK BASIN Continued 

ALAMEDA CREEK NEAR NILES, CALIF.--Continued

Particle-size analyses of suspended sediment, January to Septem

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, in 

Date 

of 

collection

Feb. 25, 1957 ....

Time

11:15 a.m

Discharge 

(cfs)

970

Water 

temperature 

(°F)

Suspended sedi

Concentration 

of sample 

(ppm)

884

Concentration 

of suspension 

analyzed 

(PPm)

2,040

Percent finer 

0.002 0.004

63

0.008 0.016

86

0

MISCELLANEOUS ANALYSES OF STREAMS IN ALAMEDA CREEK BASIN 

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Mean 

discharge 

(cfs)

Silica 

(SiO.)

Iron 

(Fe)

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium 

(Na)

Potassium 

(K)

Bicarbonate 

(HCO,)

Sulfate 

(S0«)

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Boron 

(B)

ARROYO LOS POSITOS NEAR PLEASANTON (SEC. 18, T. 3 S.

Feb. 25, 1957 ... 12 

32

0.06 

.02

26 

78

30 

59

18 

39

2.8

24

199 

553

35 

56

16 

56

0.2 

1.8

8.9 

9.7

0.38 

.36

ARROYO DE LA LAGUNA AT VERONA (SEC. 32, T. 3 S., 

Nov. 16, 1956.... 

Feb. 5, 1957.....

June 13 ..........

18

24 

11 

28

0.00 

.09 

.05 

.03

83 

56 

32 

90

87 

76 

17 

66

202 

154 

18 

107

6.5 

25 

2.4 

18

538 

462 

151 

512

136 

98 

37 

93

282 

214 

16 

145

0.2 

.5 

.2 

.8

1.3 

27 

7.7 

18

2.0 

1.5 

.26 

.97

ARROYO DE LA LAGUNA AT SUNOL (SEC. 8, T. 4 S., R

Feb. 25, 1957..... 

June 13 ...........

12 

19

O.OS 

.02

33 

87

18

58

18 

118

2.7 

11

159 

468

37 

85

16 

174

0.2

.5

7.9 

.7

0.27 

1.7

a Residue on evaporation at 180°C.
PACHECO CREEK BASIN 

MISCELLANEOUS ANALYSES OF STREAMS IN PACHECO CREEK BA

WALNUT CREEK AT WALNUT CREEK 

Periodic determinations of suspended-sediment discharge, December 

Date

Jan. 13, 1957 ...............

Jan. 16.................... .

Feb. 25 ....................

Mar. 1 .....................

May 12 .....................

Time

9:05 a.m. 

9:35 a.m. 

4:10 p.m. 

10: 40 a.m. 

11:40 a.m. 

11:30 a.m. 

3:00 p.m. 

11:15 a.m. 

10:00 a.m.

Water 

temperature 

(°F)

50 

SO 

50 

56 

40 

57 

56 

58 

60

Discharge 

(cfs)

112 

115 

3.5 

94 

23 

14 

18 

2.2 

5.6

c

Particle-size analyses of suspended sediment, December 1956 to S

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

Jan. 13, 1957 ...

Time

9:35 a.m. 

10:40 a.m.

Discharge 

(cfs)

115 

94

Water 

temperature 

(°F)

50 

56

Suspended se

Concentration 

of sample 

(ppm)

804 

531

Concentration 

of suspension 

analysed 

(ppm)

3,060 

2,520

Percent fin

0.002 0.004

79 

90

0.008 0.016

89 

95
KERN RIVER BASIN

KERN RIVER NEAR KERNVILLE, CALIF.

LOCATION. At gaging station 3 miles upstream from Salmon Creek and 13 miles north of Kernville, 

DRAINAGE AREA. 865 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1955 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 16, 1956.....

Jan. 17, 1957.....

Sent. 16..........

Discharge 

(cfs)

1.4 

1.5 

1.8 

1.8 

2.0 

1.4

2.2 

153 

1,320 

1.9 

1.6 

1.7

Silica 

(SiO.)

14 

19

Iron 

(Fe)

0.05 

.01

Calcium 

(Ca)

11 

12 

13 

15 

13 

12

8.8 

8.8 

4.5

12

Magnesium 

(Mg)

1.6 

1.9 

2.3 

1.8 

2. 1 

1.7

2.2 

.5 

.1

1.5

Sodium 

(Na)

12 

13 

14 

14 

13 

15

8.9 

7.0 

3.4 

6.5 

12 

15

Potassium 

(K)

1.4 

1.4 

1.5 

1.5 

1.4 

1.4

1.1 

.9 

.5

1.9

Bicarbonate 

(HCO,)

60 

67 

74 

76 

66 

61

46 

38 

19 

30 

51 

60

SuUate 

(SO,)

4.2 

9.6

Chloride 

(Cl)

5.0 

6.0 

5.5 

6.0 

4 5

5.0

3.5 

2.2 

.2 

3.2 

5.6 

7.8

Fluoride 

(F)

"

0.2 

.2

Nitrate 

(NO,)

"

0.0 

.2

Boron 

(B)

0.16 

.06 

.09 

.13

.20

.12 

.08 

.09 

.06 

.10 

. 12
KERN RIVER BASIN Continued

KERN RIVER BELOW ISABELLA DAM, CALIF

LOCATION.--On right bank 500 feet below Isabella Dam, Kern County, about 0.6 mile above gaging 

DRAINAGE AREA. 2,094 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1955 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 16, 1956 ..... 

Nov. 14 ..........

Jan. 17, 1957..... 

Feb. 16 ..........

Mar. 17..........

Apr. 11 ..........

July 16 ...........

Sent. 16..........

Discharge

(cfs)

6.2 

2.5 

.7 

3.2

x :i

652 

109 

1,180 

1,030 

40 

5.9

Silica 

(SiO.)

9.0 

15

Iron 

(Fe)

0.01 

.03

Calcium 

(Ca)

13 

13 

14 

16 

16 

18

16 

17 

9.5

12

Magnesium 

(Mg)

1.9 

1.9 

2 9 

L7 

3.6 

1.9

3.2 

1.1 

.7

1.6

Sodium 

(Na)

10 

11 

12 

12 

14 

14

16 

14 

8.7 

7.8 

8.1 

10

Potassium 

(K)

2.0 

1.9 

2.0 

1.9 

2.1 

2.0

2.4 

1.8 

2.0

1.9

Bicarbonate 

(HCO,)

66 

70 

77 

80 

84 

83

86 

80 

43 

41 

46 

57

Sulfate 

(SO,)

8.1 

3.8

Chloride 

(Cl)

4.0 

5.0 

5.0 

5.0 

5.5 

5.5

6.0 

5.5 

2.0 

3.6 

3.6 

4.1

Fluoride 

(F)

0.3 

.2

Nitrate 

(NO,)

0.0 

2.6

Bo

ron 

(B)

0.1

.0

.0

.0

.1

.1

.2

.1

.0

.0

.0

.0
KERN RIVER BASIN Continued

KERN RIVER NEAR BAKERSFIELD, CALIF.

LOCATION. At gaging station at Kern County Land Co. diversion weir (revised), approximately 2 mi

Bakersfield, Kern County. 

DRAINAGE AREA. 2,420 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Gaging station maintained and operated by State of California Department of Water Resou

1956 to September 1957 given in State of California Bulletin No. 23.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Sent. 25..........

Discharge 

(cfs)

659 

305 

272 

249 

408 

524

672 

721 

1,522 

1,345 

1,817 

328

Silica 

(SiO,)

13 

16

Iron 

(Fe)

0.02 

.01

Calcium 

(Ca)

64 

18 

19 

20 

18 

19

17 

18 

12

16

Magnesium 

(Mg)

2.2 

2.3 

2.3 

2.9 

3.2 

2.6

4.0 

1.9 

1.1

1.7

Sodium 

(Na)

13 

15 

18 

19 

18 

18

17 

17 

9.5 

9.2 

11 

16

Potassium 

(K)

2.3 

2.4 

2 2 

2! 3 

2.3 

2 2

2.2 

2.0 

2.0

2 2

Bicarbonate 

(HCO,)

74 

77 

' 82 

95 

84 

84

86 

79 

53 

50 

54 

71

Sulfate 

<SO«)

12 

12

Chloride 

(Cl)

5.8 

1.1 

13 

14 

10 

10

9.0 

9.8 

3.8 

5.0 

6.0 

10

Fluoride 

(F)

0.2 

.0

Nitrate 

(NO,)

0.5 

.0

Boron 

(B)

0.13 

.07 

.16 

.12 

.21 

.13

. 17 

.15 

.00 

.10 

.15 

. 19
KERN RIVER BASIN Continued

MISCELLANEOUS ANALYSES OF STREAMS IN KERN RIVER BASIN 

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Mean

discharge 

(cfs)

Silica 

(810.)

Iron 

(Fe)

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium 

(Na)

Potassium 

(K)

Bicarbonate 

(HCO.)

Sulfate 

(SO,)

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Boron 

(B)

PLEITO CREEK NEAR GRAPEVINE (SEC. 27, T. 11 N., R. 

Mar. 11, 1957 ... 

Mar. 16 .........

23 

25

224

452

118 

147

367 

1,210

5.2 

20

280 

238

1,360 

2,980

128 

750

2.0 

2.0

0.2 

.5

3.5 

3.1

TECUYA CREEK NEAR WHEELER RIDGE (SEC. 11, T. 11 N., R

Oct. 6, 1956 ..... 

Mar. 16, 1957....

47 

32

304 

129

106 

36

362 

149

16 

7.4

940 

296

1,080 

480

55 

24

0.8 

1.4

1.6 

1.1

1.0 

.7
TULARE LAKE BASIN

TULE RIVER NEAR PORTERVILLE, CALIF.

LOCATION. At gaging station on downstream side of highway bridge, 1 mile upstream from South Fork, a

DRAINAGE AREA. 261 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 9, 1956........

Dec. 11 ............

Jan. 9, 1957........

Feb. 19 ............

May 14 .............

July 9 ..............

Sept. 25............

Discharge 

(cfs)

23 

29 

34 

33 

79 

97

84 

119 

156 

a!5 

3.4 

3.1

Silica 

(SiOa)

24 

33

Iron 

(Fe)

0.03 

.01

Calcium 

(Ca)

44 

45 

38 

58 

38 

35

35 

29 

22

53

Magnesium 

(Mg)

15 

15 

20 

9.6 

5.1 

5.5

4.3 

2.6 

1.6

8.3

Sodium 

(Na)

23 

22 

22 

22 

15 

14

12 

11 

7.2 

16 

20 

23

Potassium 

(K)

3.7 

3.6 

3.6 

2.9 

2.1 

2.2

2.1 

1.8 

1.6

3.8

Bicarbonate 

(HCO,)

249 

250 

252 

261 

170 

b!53

149 

121 

90 

193 

c238 

d234

Carbonate 

(CO,)

Sulfate 

(SO.)

1.9 

2.9

Chlorids 

(Cl)

13 

12 

12 

12 

7.5 

7.3

6.0 

4.5 

2.3 

7.5 

9.8 

13

Fluoride 

(F)

0.2 

.0

Nitrate 

(NO,)

0.3 

.6

Bo

ro

(B

0.08 

.09 

.09 

.17 

. 1

.04

.19 

.05 

.00 

. 1

.15 

. 1

a Daily mean discharge (cfs).

b Includes equivalent of 4 parts per million of carbonate (CO3 ). 

c Includes equivalent of 13 parts per million of carbonate (CO3 ). 

d Includes equivalent of 5 parts per million of carbonate (CO3 ).
TULARE LAKE BASIN Continued

KAWEAH RIVER NEAR THREE RIVERS, CALIF

LOCATION. Just below gaging station, 2.5 miles downstream from South Fork and 3 miles southwest 

DRAINAGE AREA.--520 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 19S6 

Date of collection

Oct. 9, 1956 ......

Dec. 11 ..........

Jan. 9, 1957 ......

Feb. 19 ..........

Mar 19

Apr. 9 ...........

June 11. ..........

July 9 ............

Sept. 25..........

Discharge 

(els)

78 

72 

82 

64 

250 

295

494 

694 

1,420 

355 

89 

48

Silica 

(SiO,)

13 

18

Iron 

(Fe)

0.02 

.00

Calcium 

(Ca)

17 

17 

18 

20 

11 

12

7.6 

6.8 

4.8

18

Magnesium 

(Mg)

2 9 

. ft

2 3 

3. 2 

2.2 

1.1 

1.0

1.2 

.2 

.1

1.1

Sodium 

(Na)

5.9 

6.4 

7.7 

7.9 

5.1 

4.4

2.9 

3.5 

1.8 

2.9 

5.3 

7.4

Potassium 

(K)

2.0 

1.9 

1.8 

1.7 

1.4 

1.0

.8 

1.0 

.7

2.4

Bicarbonate 

(HCO,)

71 

75 

77 

73 

43 

44

31 

25 

18 

29 

49 

66

Sulfate 

(S04)

3. 8

3

D 

. 0

Chloride 

(Cl)

4.6 

5.7 

8.5 

7.0 

2.5 

2.8

1.0 

1.0 

.0 

2.0 

4.6 

7.0

Fluorlde 

(F)

0.0 

.0

Nitrate 

(NO,)

0.4 

.0

Bo

ron 

(B) 

0.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0
TULARE LAKE BASIN Continued

KINGS RIVER BELOW NORTH FORK, CALIF.

LOCATION. At gaging station 0.8 mile downstream from North Fork, Fresno County, 2.4 miles southw

DRAINAGE AREA. 1,350 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: October 1955 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957-given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 11, 1956..... 

Nov. 28 ..........

Dec. 28 ..........

Jan. '17, 1957 .....

Mar. 11..........

Apr. 19 ..........

June 14 ..........

July 12 ...........

Sept. 13 ..........

Discharge 

(cfs)

387 

234 

228 

314 

927 

1,080

1,680 

2,900 

7,080 

1,920 

225

Silica 

(SiO,)

5.8 

9.6

Iron 

(Fe)

0.02 

.00

Calcium 

(Ca)

6.3 

7.2 

6.0 

4.4 

4.8 

5.6

3.2 

5.0 

3.8

7.0

Magnesium 

(Mg)

0.5 

.9 

1.9 

.9 

.7 

.0

..2 

.4 

.0

.6

Sodium 

(Na)

2.8 

3 9 

4.2 

1.6 

3.1 

4.3

2.0 

2.5 

1.7 

2.4 

3.8

Potassium 

(K)

1.0 

1.1

1.0 

.7 

.8 

.8

.5 

1.1 

.6

1.5

Bicarbonate 

(HCO,)

24 

33 

29 

19 

20 

19

15 

21 

14 

16 

26

Sulfate 

(S04 )

2.5 

2.9

Chloride 

(Cl)

1.5 

2.4 

2.5 

.6 

1.3 

2.0

.5 

.2 

.0 

1.1 

3.6

Fluoride

(F)

0.2 

.0

Nitrate 

(NO,)

0.3 

2.1

Boron 

(B)

0.04 

.03 

.02 

.00 

.00 

.07

.00 

.01 

.00 

.04 

.01
TULARE LAKE BASIN Continued 

KINGS RIVER BELOW PINE FLAT DAM, CALIF

LOCATION (revised) . At gaging station, 3,200 feet downstream from Pine Flat Dam, Fresno County, and 

DRAINAGE AREA. 1,542 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1955 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

June 14. ............

July 12 .............

Sept. 13 ............

Discharge 

(cfs)

22 

28 

115 

372 

153 

1,380

1,000 

1,400 

5,820 

6,670 

4,460 

1,450

Silica 

(SiO.)

6.3

8.4 

4.7

Iron 

(Fe)

0.02

.04 

.00

Calcium 

(Ca)

3.7 

4.8 

3.6 

6.8 

4.8 

5.8

5.2 

2.9 

2.4

3 2

Magnesium 

(Mg)

0.5 

.6 

1.5 

.7 

.9 

.9

.0 

.1 

.9

.1

Sodium 

(Na)

1.2 

1.3 

1.6 

3.7 

2.2 

2.2

2.2 

1.6 

1.8 

1.9 

1.5 

2.0

Potassium 

(K)

0.7 

.7 

.7 

.9 

.9 

.9

.8 

.4 

.6

.8

Bicarbonate 

(HCO.)

14 

19 

18 

27 

22 

26

21 

12 

7 

10 

12 

13

Carbonate 

(CO,)

Sulfate 

<SO«)

0.4

.0 

1.0

Chloride 

(Cl)

0.3 

.4 

1.0 

2.5 

.5 

M

.5 

.3 

.0 

1.8 

.8 

1.6

Fluoride 

(F)

0.3 

.0

Nitrate 

(NO,)

0.2 

1.2

B

ro

(B

0
TULARE LAKE BASIN Continued 

KINGS RIVER AT PEOPLES WEIR, NEAR KINGSBURG, CA

LOCATION. About 0.25 mile below gaging station located on diversion weir, 2 miles south of Kingsburg

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Gaging station maintained and operated by the Kings River Water Association. Records of di

furnished by the State of California Department of Water Resources.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 9, 1956........

Nov. 14 ............

Dec. 11 ............

Feb. 19 ............

Mar. 20............

May 15 .............

Sept. 25..... .......

Discharge 

(cfs)

108 

3 

4 

368 

131 

673

169 

191 

1,421 

1,950 

1,379 

985

Silica 

(S10,)

10 

12

Iron 

(Fe)

0.06 

.01

Calcium 

(Ca)

9.9 

18 

22 

7.2 

17 

6.8

7.6 

11 

4.9

5.4

Magnesium 

(Mg)

3 3 

5! 5 

7.5 

2.2 

6.2 

1.2

3.2 

2.6 

.0

.6

Sodium 

(Na)

6.5 

12 

16 

4.2 

13 

3.2

4.5 

6.7 

2.4 

2.4 

2.3 

2.4

Potassium 

(K)

1.4 

1.9 

2.3 

.9 

2.0 

1.0

1.1 

1.4 

.7

1.1

Bicarbonate 

(HCO,)

57 

101 

124 

37 

99 

28

38 

58 

19 

19 

19 

20

Carbonate 

(CO,)

Sulfate 

(SO,)

3.6 

2.9

Chloride 

(CD

3.0 

6.1 

8.5 

2.0 

11 

1.8

2.0 

2.9 

.0 

.4 

.7 

1.5

Fluoride 

(F)

0.2 

.0

Nitrate 

(NO,)

1.2 

.0

B

ro

(B

0.0

.

.0

.0

.0

.0

.0

.0

.

.

.

.
SAN JOAQUIN RIVER BASIN

*

SAN JOAQUIN RIVER BELOW FRIANT, CALIF.

LOCATION. At gaging station 0.5 mile west of Friant, Fresno County, 1.5 miles downstream from Cotton

DRAINAGE AREA. 1,675 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1952 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Sept. 25.......... ..

Discharge 

(ds)

718 

598 

284 

254 

56 

58

181 

124 

157 

181 

162 

115

Silica 

(810.)

11 

9.8

Iron 

(Fe)

0.02 

.00

Calcium 

(Ca)

2.8 

3.3 

4.0 

2.8 

4.0 

4.0

3.9 

3.6 

3.6

3.9

Magnesium 

(Mg)

0.0 

.4 

1.7 

.4 

.5 

1.2

.6 

.2 

.1

.0

Sodium 

(Na)

1.8 

2.4 

2.7 

2.7 

4.3 

4.0

3.6 

4.0 

4.0 

4.0 

4.3 

4.3

Potassium 

(K)

0.6 

.7 

.9 

.5 

.7 

.6

.6 

.6 

.6

1. 1

Bicarbonate 

(HCO,)

12 

14 

16 

13 

17 

19

19 

16 

16 

15 

17 

20

Carbonate 

(COS)

Sulfate 

(SO,)

0.0 

.0

Chloride 

(Cl)

0.0 

2.0 

2.0 

2.2 

3.5 

4.4

3.2 

3.9 

2.4 

2.8 

4.2 

2.5

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

0.8 

.3

B

r

(

0
SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER NEAR BIOLA, CALIF.

LOCATION. At Skaggs Bridge, 1.9 miles upstream from gaging station, and about 2.5 miles northwest 

DRAINAGE AREA. 1,805 square miles (above gaging station).

RECORDS AVAILABLE.--Chemical analyses: November 1952 to September 1957.

Water temperatures: November 1952 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 85 ppm Mar. 17-31; minimum, 34 ppm Oct. 17-31.

Hardness: Maximum, 35 ppm Mar. 1-16; minimum, 9 ppm Oct. 1-16.

Specific conductance: Maximum daily, 132 micromhos Apr. 5; minimum daily, 32.8 micromhos Oct. 

Water temperatures: Maximum, 99 °F June 4; minimum, 44°F Dec. 19. 

EXTREMES, 1952-57. Dissolved solids: Maximum, 117 ppm Jan. 3-10, 1953; minimum, 26 ppm May 30, 

Hardness: Maximum, 53 ppm Jan. 11-13, 1953; minimum, 9 ppm Oct. 1-15, 1956.

Specific conductance: Maximum daily, 170 micromhos Jan. 3, 1953; minimum daily, 32.7 micromhos 

Water temperatures: Maximum, 99°F June 4, 1957; minimum, 36°F Feb. 23, 24, 28, Mar. 1, 2, 1953

REMARKS. Records of specific conductance of daily samples available in district office at Sacrame

October 1956 to September 1957 given in WSP 1515. No appreciable inflow between sampling point 

runoff .

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-16, 1956 ..

Dec. 1-12........

Jan. 1-14, 1957...

Apr. 23-30.......

Mav 14-31........

Mean 

discharge 

(cfs)

729 

716 

355 

607 

146 

85.5 

380

236 

89.4 

73.8 

70.1 

79.8 

59.1

46.2 

121 

103 

91.8 

98.1

Silica 

(SiO,)

11 

10 

11 

9.7 

12 

16 

10

10 

14 

13 

14 

13 

14

12

9.8 

9.8 

10 

10

Iron 

(Fe)

0.03 

.04 

.04 

.04 

.03 

.06 

.06

.05 

.06 

.06 

.04 

.00 

.00

.00 

.00 

.00 

.00 

.06

Calcium 

(Ca)

3.4 

3.3 

4.0 

3.5 

6.0 

8.6 

4.0

5.0 

7.4 

8.6 

9.2 

8.8 

9.0

9.0 

6.4 

7.0 

7.4 

6.4

Magnesium 

(Mg)

0.1 

.4 

.5 

.6 

1.5 

3.0 

1.2

1.1 

1.8 

2.1 

2.2 

3.2 

2.3

2.8 

1.7 

1.8 

1.3 

1.5

Sodium 

(Na)

2.7 

2.6 

3.6 

2.9 

6.0 

9 2 

4'. 3

4.8 

7.8 

8.8 

9 3 

10 

12

12 

7.3 

8.8 

8.2 

8.4

Potasslum 

(K)

0.7 

.7 

.9 

.7 

.9 

1.5 

.8

1.0 

1.2 

1.5 

1.3 

1.3 

1.3

1.6 

1.1 

1.3 

1.6 

1.8

Bicarbonate 

(HCO,)

16 

16 

21 

16 

31 

50 

20

22 

38 

45 

47 

53 

50

53 

31 

34 

34 

34

Sulfate 

(SO,)

0.0 

.0 

.0 

.8 

3.5 

4.8 

3.8

3.8 

3.8 

3.8 

4.8 

4.8 

7.7

6.7 

5.8 

7.7 

7.7 

5.8

Chloride 

(Cl)

1.1 

1.4 

2.0 

2.0 

3.7 

4.5 

3.0

3.5 

5.0 

5.5 

5.5 

5.5 

6.0

7.0 

5.2 

5.8 

5.0 

4.4

Fluoride 

(F)

0.1 

.2 

.1 

.2 

.1 

.1 

.1

.1 

.'1 

.1 

.1 

.2 

.2

.2 

.2 

.2 

.2 

.0

Nitrate 

(NO,)

0.7 

1.1 

1.0 

.8 

1.3 

3.1 

1.4

.3 

.9 

.7 

.8 

.7 

.0

.7 

1.0 

.9 

.7 

1.8

Boron 

(B)

0.04 

.02 

.07 

.01 

.03 

.01 

.07

.06 

.02 

.05 

.09 

.13 

.03

.02 

.05 

.04 

.00 

.16
June 1-9, 1957....

Sept. 16-30 ......

Weighted average13

97.2 

326

96 3

91.2

185

11

8.2

11

11

.03 

.03

.08

.02

.01

.00

0.03

6.0 

4.4

4.6

5.0

5.7

4.8

1.2

.5

1.3

1.2

1.2

1.0

7.9 

6.2

7.3

6.7

6.7

6.7

7.2

5.1

1.7 

1.6

1.7

1.3

1.3

1.0

37 

21

27

29

33

25

2.9 

.9

.0

.9

.0

.0

.5

.5

1.9

2.2

4.5 

4.0

5.5

5.2

4.8

5.4

4.6

3.1

.0 

.0

.0

.0

.0

0.1

1.6 

1.9

1.0

1.1

.8

.7

1.0

.6

1.1

.2

.2

.

.0

.0

.0

.0

0.0

a Calculated from determined constituents.

b Represents 100 percent of runoff for water year October 1956 to September 1957.
250 PACIFIC SLOPE BASINS IN CALIFORNIA

SAN JOAQUIN RIVER BASIN--Continued

SAN JOAQUIN RIVER NEAR BIOLA, CALIF. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/8nce-daily measurement, generally between 3 p. m. and 5 p. m. /

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

Average

Oct.

71

70

70

65

--

67

67

69

68

68

64

64

65

65

63

..

67

63

63

64

_

68

58

56

58

61

61

55

60

56

56

64

Nov.

56

56

63

63

56

64

58

65

64

64

64

62

58

58

55

56

58

58

52

50

54

55

55

50

54

50

55

53

53

53

57

Dec.

52

54

54

_

53

53

49

51

49

50

49

53

53

54

51

49

49

44

46

46

47

47

47

50

49

52

49

50

51

50

Jan.

47

47

47

47

47

47

47

50

49

47

_

50

55

53

54

55

48

46

47

53

47

47

53

48

47

46

46

47

50

49

Feb.

53

49

..

50

54

54

49

53

..

57

59

59

63

60

60

61

60

64

64

61

61

60

60

61

67

61

62

60

_-

59

Mar.

63

63

62

64

65

68

69

67

63

63

65

63

63

64

59

_

59

64

65

68

58

58

59

68

63

67

74

74

68

69

67

65

Apr.

63

69

74

74

78

72

71

75

73

71

71

73

73

72

67

61

76

64

63

63

62

73

72

_

83

72

78

74

71

May

75

75

78

77

85

81

71

75

72

72

68

73

67

69

66

79

75

67

68

65

63

76

71

73

80

80

80

79

77

80

74

June

..

85

99

80

83

75

65

65

75

76

73

72

70

87

80

67

77

78

80

81

72

85

85

81

64

79

79

80

78

July

75

76

76

81

81

77

78

80

81

70

80

72

72

72

79

80

61

76

73

57

70

75

77

74

75

79

80

75

65

~

75

Aug.

75

75

74

73

73

79

81

75

81

79

85

84

87

88

88

88

83

85

79

87

88

81

81

82

_

84

83

77

78

--

81

Sept.

80

83

85

84

84

..

87

84

83

79

80

83

80

78

78

78

78

78

78

75

_

82

83

81

78

79

85

77

78

--

81
SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER NEAR MENDOTA, CALIF.

LOCATION. On left bank (revised) 2.5 miles downstream from Mendota Dam and 4 miles north of Mendota, 

DRAINAGE AREA. 4,310 square miles.

RECORDS AVAILABLE. Chemical analyses; October 1953 to September 1957.

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 8, 1956 ........

Nov. 13 ............

Dec. 10 ............

Feb. 18 ............

Mar. 18............

July 10 .............

Sept. 24 ............

Discharge 

(cfs)

Silica 

(SiO.)

 

17 

26

Iron 

(Fe)

"

0.14 

.05

Calcium 

(Ca)

4.8 

6.2 

21 

5.2

38 

32

41 

32 

13

36

Magnesium 

(Mg)

1.0 

1.7 

8.6

18 

17

20 

13 

4.3

16

Sodium 

(Na)

6.0 

7.8 

29

87 

72

75 

58 

19 

37 

39 

74

Potassium 

(K)

1. 1 

1.0 

2.4 

.9 

2.8 

3.4

3.1 

2.5

1.7

4.0

Bicarbonate 

(HCO,)

24 

33 

105 

28 

122 

119

107 

103 

52 

90 

89 

137

Carbonate 

(CO,)

Sulfate 

(S04)

49 

50

Chloride 

(Cl)

4.5 

8.8 

37 

6.7 

119 

101

118 

88 

24 

61 

57 

112

Fluoride 

(F)

0.2 

. 1

Nitrate 

(NO,)

1.4 

1.3

Bo

ro

(B

0.0

.0

.

.0

.3

.3

.2

.

.0

.

.

.
SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER NEAR DOS PALOS, CALIF.

LOCATION. On left bank (revised) 0.7 mile downstream from Temple Slough and 7 miles east of Dos Palos, 

DRAINAGE AREA.--5,630 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS.--No discharge records available for this station.

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Dec. 10 ............

Jan. 7, 1957........

Apr. 8 .............

May 13 .............

June 10. ............

Sept. 24 ............

Discharge 

(cfs)

Silica 

(SiO,)

20 

19

Iron 

(Fe)

0.14 

.02

Calcium 

(Ca)

11 

16 

38 

13 

31 

38

41 

30 

19

26

Magnesium 

(Mg)

3.4 

4.5 

13 

4.0 

7.9 

17

18 

12 

6.2

15

Sodium 

(Na)

17 

23 

73 

22 

68 

79

75 

54 

30 

34 

44 

64

Potassium 

(K)

1.5 

1.6 

3.0 

1.6 

2.5 

3.6

3.1 

2.6 

2.1

3.5

Bicarbonate 

(HCO.)

51 

68 

104 

57 

94 

138

110 

100 

67 

84 

94 

120

Carbonate 

(CO,)

Sulfate 

(S04)

58 

41

Chlorids

(Cl)

19 

29 

74 

24 

85 

110

114

71 

37 

47 

60 

92

Fluorlde 

(F)

0.4 

.3

Nitrate 

(NO,)

1.7 

1.1

Boron 

(B)

0.01 

.03 

.31 

.02 

.32 

.40

.20 

. 13 

.01 

.25 

.12 

.18
SAN JOAQUIN RIVER BASIN--Continued 

BEAR CREEK NEAR STEVINSON, CALIF.

LOCATION. On right bank (revised) 1 mile above confluence with San Joaquin River and 4.5 miles s

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 10, 1956.....

Dec. 12 ..........

Apr. 10 ..........

May 15 ...........

June 10. ..........

July 10 ...........

Sept. 26 ..........

Mean 

discharge 

(cfs)

Silica 

(SiO.)

31 

42

Iron 

(Fe)

0.10 

.04

Calcium 

(Ca)

18 

26 

36 

23 

36 

35

37 

24 

22

17

Magnesium 

(Mg)

5.6 

11 

14 

89 

16 

13

14 

9.2 

7.1

15

Sodium 

(Na)

25 

53 

46 

49 

85 

52

118 

59 

38 

58 

68 

31

Potassium 

(K)

2.7 

3.7 

3.2 

4.0 

3.8 

3.5

3.2 

3.6 

2. 8

3.4

Bicarbonate 

(HCO,)

116 

195 

171 

196 

210 

201

238 

167 

158 

139 

166 

162

Sulfate 

(S04 )

25 

14

Chloride 

(Cl)

17 

39 

63 

22 

80 

44

118 

46 

15 

57 

56 

21

Fluoride 

(F)

0.4 

.5

Nitrate 

(NOS )

1.6 

4.5

Boron 

(B)

0.02 

.09 

.05 

.08 

.24 

.08

.06 

.15 

.00 

.00 

.05 

. 14
SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER AT FREMONT FORD BRIDGE, 

LOCATION. At gaging station at Fremont Ford Bridge, Merced County, in Orestimba Grant, 2.1 miles 

and 6.7 miles upstream from Merced River. 

DRAINAGE AREA. 8,090 square miles. 

RECORDS AVAILABLE. Chemical analyses: July 1955 to September 1957.

Water temperatures: July 1955 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 1,300 ppm Nov. 18-30; minimum, 199 ppm Oct. 19-23.

Hardness: Maximum, 445 ppm Nov. 18-30; minimum, 79 ppm Oct. 19-23.

Specific conductance: Maximum daily, 2,490 micromhos Nov. 4; minimum daily, 291 micromhos Oct. 

Water temperatures: Maximum, 81°F June 25; minimum, 39°F Jan. 29, 30. 

EXTREMES, 1955-57. Dissolved solids: Maximum, 3,350 ppm Oct. 30-31, 1955; minimum, 93 ppm June 1

Hardness: Maximum, 1,240 ppm Oct. 30-31, 1955; minimum, 32 ppm June 1-8, 1956.

Specific conductance: Maximum daily, 7,730 micromhos Nov. 4, 1955; minimum daily, 121 micromhos 

Water temperatures: Maximum, 83°F July 23, 1956; minimum, 39°F Jan. 29, 30, 1957.

REMARKS. Records of specific conductance of daily samples available in district office at Sacrame

than 1,000 ppm are residues at 180°C and for more than 1,000 ppm are calculated from determined 

October 1956 to September 1957 given in WSP 1515

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 1-12, 1956... 

Oct. 13-18.......

Oct. 19-23.......

Oct. 24-31.......

Nov. 1-10........

Nov. 11-17.......

Nov. 18-30. ......

Dec. 1-15 .......

Dec. 16-31.......

Jan. 1-7, 1957 . . .

Feb. 1-9. ........

Feb. 10-11.......

Feb. 12-15. ......

Feb. 16-26.......

Feb. 27-28.......

Mar. 1-3 ........

Mar. 4 ..........

Mar. 5-9 ........

Mean 

discharge 

(cfs)

167 

173 

225 

92.0 

59.0

67.1 

52.2 

66.8 

65.4 

72.4

234 

190 

172 

459 

1,273

260 

304 

365 

695 

1,505

Silica 

(S10a)

25 

23 

18 

21 

27

25 

25 

23 

23 

33

26 

26 

26

25

23 

25 

24

29

Iron 

(Fe)

0.01 

.01 

.12 

.01 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00

.00 

.01 

.03 

.02

Calcium 

(Ca)

40 

31 

19 

59 

86

68 

90 

80 

85 

84

50 

58 

62 

54 

42

59 

49 

46 

33 

48

Magnesium 

(Mg)

19 

14 

7.7 

31 

50

43 

54 

50 

51 

50

29 

35 

40 

22 

18

31 

25 

20 

17 

22

Sodium 

(Na)

99 

75 

38 

171 

279

227 

310 

276 

289 

291

166 

197 

219 

147 

97

171 

133 

114 

70 

103

Potassium 

(K)

3.6 

3.6 

2.8 

3.2 

4.0

4.4 

4.0 

4.0 

4.0 

4.0

4.0 

3.6 

4.0 

3.6 

3.4

4.0 

3.8 

3.6

3.4

Bicarbonate 

(HCO,)

146 

130 

98 

142 

196

203 

218 

217 

209 

204

191 

184 

190 

140 

130

175 

194 

168 

148 

146

SuUate 

(SOJ

64 

44 

18 

119 

198

148 

215 

204 

228 

223

146 

188 

219 

230 

89

173 

118 

98

96

Chloride 

(Cl)

147 

109 

47 

291 

460

352 

496 

432 

458 

452

200 

250 

288

137

231 

170 

144

152

Fluoride 

(F)

0.3 

.3 

.2 

.2 

.3

.3 

.3 

.2 

.2 

.2

.4 

.3 

.3

.0

.0 

.0 

.5

.4

Nitrate 

(NO,)

2.9 

3.0 

2.6 

2.6 

2.4

2.2 

1.3 

2.6 

2.3 

3.1

3.1 

4.8 

3.3

4.2

2.3 

2.4 

2.9

3.8

Boron 

(B)

0.20 

.15 

. 11 

.36 

.56

.46 

.54 

.52 

.60 

.66

.58 

.93 

1. 1 

.99 

.50

.94 

.66 

.50

.50
Mar. 10-31, 1957.

May 27-31 .......

June 1-9.........

June 10-19.......

July 1-9 .........

Sept. 16-30 ......

Sept. 25.........

Weighted average3

320 

291

223

458

400

246

272

177

160

155

166

166

144

125

232

26 

26

26

23

26

22

22

23

24

30

26

27

25

25

26

29

29

b25

.00 

.00

.00

.02

.01

.03

03

.03

.03

02

.02

bO.Ol

61 

56

65

31

40

34

46

42

40

46

47

30 

25

31

14

20

16

24

29

23

25

149

68

107

125

124

4.0

3.4

3.7

5.6

5.0

5.0

5.4

5.0

b4.0

178

133

155

156

146

60

79

95

65

b!07

206

243

64

94

165

212

182

b!79

.4

.4

.4

.4

. 1

.1

.2

.2

.1

.4

.4

.3

bO.3

3.1

2.7

1.6

.7

1.5

1.7

1.5

b2.7

.8

.6

.6

.2

.3

.3

.3

.3

bO.4

a Represents 100 percent of runoff for water year October 1956 to September 1957. 

b Includes estimates for missing data.
256 PACIFIC SLOPE BASINS IN CALIFORNIA

SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER AT FREMONT FORD BRIDGE, CALIF.--Continued

Temperature (°F) of .water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 10 a. mj

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

Average

Oct.

69

69

70

68

67

68

68

69

68

68

67

64

63

62

62

62

62

62

62

62

62

51

55

56

60

56

55

56

55

63

Nov.

53

53

55

56

55

56

57

58

59

60

59

59

57

50

50

50

51

52

50

48

47

47

47

48

49

48

49

49

48

47

--

54

Dec.

47

47

_

49

51

51

48

42

42

43

47

49

49

50

49

49

50

50

49

42

42

43

42

42

42

42

41

41

41

42

42

45

Jan.

42

42

43

42

44

45

46

46

43

42

43

46

48

49

46

48

48

48

48

47

47

45

47

46

46

45

44

40

39

39

40

45

Feb.

41

45

44

44

45

46

48

49

52

52

53

55

57

58

58

57

57

58

58

56

F-5

57

58

61

60

59

_

_

53

Mar.

60

60

58

59

59

60

62

62

60

58

60

61

57

55

56

55

55

56

57

59

59

56

55

_

--

60

_

65

67

_

62

59

Apr.

59

56

59

62

65

66

60

64

64

64

62

63

64

65

63

63

62

59

60

59

57

61

63

64

64

65

67

70

72

71

--

63

May

68

66 .

65

67

70

72

70

68

67

66

67

67

67

66

65

66

69

69

65

65

63

66

66

67

70

72

74

76

74

73

71

68

June

72

71

73

_

77

74

74

74

72

69

72

70

74

71

69

68

70

70

76

75

74

74

76

79

81

80

80

80

76

75

74

July

75

75

75

75

77

77

76

75

76

75

76

77

75

74

75

76

77

76

74

74

74

73

74

76

76

76

76

76

77

76

74

75

Aug.

75

77

78

76

72

72

74

73

74

74

72

72

74

76

74

74

73

73

74

74

74

75

75

75

74

71

71

70

70

67

69

73

Sept.

70

71

71

72

72

74

75

75

76

73

71

70

70

71

70

69

70

70

68

69

68

70

70

71

70

70

71

70

67

67

--

71
SAN JOAQUIN RIVER BASIN Continued 

MERCED RIVER AT EXCHEQUER, CALIF.

LOCATION. At gaging station at Exchequer, Mariposa County, 0.65 mile downstream from Lake McClur

DRAINAGE AREA. 1,035 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 10, 1956 ..... 

Nov. 15 ..........

Dec. 12 ..........

Jan. 9, 1997 ......

Mar. 21..........

May 15 ...........

June 12. ..........

July 10 ...........

Sept. 26..........

Discharge 

(cfs)

1,090 

38 

38 

38 

38 

766

1,780 

1,620 

2,630 

1,880 

1,690 

1,240

Silica 

(SiO,)

9.0 

7.4

Iron 

(Fe)

0.02 

.10

Calcium 

(Ca)

4.4 

7.6 

8.0 

8.4 

9.2 

8.6

8.4 

6.2 

5.5

5.4

Magnesium 

(Mg)

0.5 

1.3 

1.7 

1.6 

1.8 

2.3

1.7 

.4 

.2

1.1

Sodium 

(Na)

1.2 

1.9 

2 3 

2A 

3.1 

2.2

2.3 

2.1 

1.8 

1.4 

1.5 

2.2

Potassium 

(K)

0.7 

.8 

.8 

.8 

1.1 

.8

.8 

.6 

.4

1.0

Bicarbonate 

(HCO,)

16 

34 

32 

33 

36 

34

31 

22 

19 

12 

13 

28

Sulfate 

(SO,)

1.5 

.0

Chloride 

(Cl)

0.4 

1.8 

1.0 

2.0 

2.5 

2.5

1.5 

1.9 

.0 

.8 

.7 

.2

Fluoride 

(F)

0.2 

.2

Nitrate 

<NOS)

0.3 

.2

Boron 

(B)

0.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0
SAN JOAQUIN RIVER BASIN--Continued 

MERCED RIVER NEAR STEVINSON, CALIF.

LOCATION. At gaging station, 5 miles upstream from mouth and 6 miles northwest of Stevinson, Merced C

DRAINAGE AREA. 1,274 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1952 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Bate of collection

Oct. 10, 1956.......

Nov. 15 ............

Jan. 9, 1957........

May 15 .............

June 10. ............

July 10 .............

Sept. 26............

Discharge 

(cfs)

236 

175 

158 

155 

158 

678

240 

271 

2,520 

162 

134 

228

Silica 

(S10.)

49 

30

Iron 

(Fe)

0.04 

.01

Calcium 

(Ca)

17 

21 

22 

20 

19 

10

14 

15 

6.0

16

Magnesium 

(Mg)

4.7 

6.4 

7.3 

7.3 

7.2 

3.9

4.9 

2.8 

.5

5.2

Sodium 

(Na)

22 

27 

32 

29 

28 

5.7

16 

15 

2.4 

28 

29 

21

Potassium 

(K)

2.0 

2.3 

2.4 

2.2 

2.2 

1.1

1.6 

1.8 

.5

2.2

Bicarbonate 

(HCO,)

104 

132 

136 

132 

124 

53

82 

79 

24 

102 

106 

99

Carbonate 

(COS)

Sulfate 

(SO,)

4.8 

9.6

Chloride 

(Cl)

14 

17 

21 

19 

18 

3.8

10 

8.5 

.1 

22 

21 

14

Fluoride 

(F)

0.2 

.0

Nitrate 

(NO,)

1.9 

2.0

B

ro

(B

0.0

.0

.0

.0

.0

.1

.0

.0

.0

.0

.0

.0
SAN JOAQUIN RIVER BASIN--Continued 

SAN JOAQUIN RIVER NEAR GRAYSON, CALIF

LOCATION. At gaging station at Laird Slough Bridge, 1.8 miles east of Grayson, Stanislaus Count

14 miles southwest of Hodesto.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Gaging station maintained and operated by City of San Francisco in cooperation with 

Hodesto Irrigation District, and Turlock Irrigation District. Flow is San Joaquin River div

main channel, 2.1 miles downstream. Records of discharge for water year October 1956 to Sep

as San Joaquin River at Grayson (Laird Slough).

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 11, 1956..... 

Nov. 16 ..........

Dec. 13 ..........

Jan. 10, 1957..... 

Feb. 21 ..........

May 16 ...........

June 13. ..........

Sept. 27..........

Discharge 

(cfs)

715 

480 

440 

610 

635 

1,370

465 

690 

1,670 

435 

450 

570

Silica 

(SiO.)

20 

27

Iron 

(Fe)

0.03 

.01

Calcium 

(Ca)

35 

54 

55 

50 

51 

32

48 

40 

17

39

Magnesium 

(Mg)

18 

28 

31 

28 

38 

18

30 

19 

5.4

18

Sodium 

(Na)

92 

150 

159 

148 

138 

80

130 

104 

29 

119 

115 

101

Potassium 

(K)

2.6 

3.2 

3.4 

4.0 

3.4 

2.4

2.8 

3.0 

1.8

3.8

Bicarbonate 

(HCO,)

152 

208 

207 

240 

190 

130

168 

151 

72 

151 

163 

156

Sulfate 

(S04)

92 

82

Chloride 

(Cl)

118 

192 

198 

191 

170 

102

179 

131 

36 

159 

146 

128

Fluoride 

(F)

0.3 

.2

Nitrate 

(NO,)

1.8 

3.1

B

ro

(B

0
SAN JOAQUIN RIVER BASIN Continued 

TUOLUMNE RIVER ABOVE LA GRANGE DAM, NEAR LA GRAN

LOCATION.--On left bank 0.5 mile above gaging station at Don Pedro Dam, 4 miles upstream from La 

Stanislaus County. 

DRAINAGE AREA.--1,540 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1954, October 1956 to Septembe

REMARKS. No appreciable inflow between sampling point and gaging station. Records of discharge 

WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 10, 1956..... 

Nov. 15 ..........

Dec. 13 ..........

Jan. 10, 1957 ..... 

Feb. 20 ..........

Apr. 11 ..........

May 16 ...........

July 11 ..........

Sept. 26..........

Discharge 

(cfs)

1,420 

2,350 

1,960 

1,140 

950 

3,180

2,540 

2,030 

3,160 

3,180 

2,280 

1,420

Silica 

(SiOa)

22 

5.1

Iron 

(Fe)

0.02 

.00

Calcium 

(Ca)

3.0 

3.0 

4.0 

3.4 

3.6 

4.4

4.8 

4.4 

3.8

.8

Magnesium 

(Mg)

0.6 

.6 

1.0 

.9 

1.1 

2.4

2.7 

.4 

.4

1.1

Sodium 

(Na)

1.2 

1.1 

1.2 

1.2 

1.5 

1.6

2.0 

2 3 

l!4 

1.2 

1.6 

1.3

Potassium 

(K)

0.6 

.5 

.5 

.4 

.5 

.7

.6 

.7 

.5

.6

Bicarbonate 

(HCO,)

13 

14 

16 

16 

16 

22

27 

18 

16 

10 

9 

12

Sulfate 

(SO.)

2.3 

.0

Chloride 

(Cl)

0.4 

.5 

.2 

.3 

.5 

1.0

.5 

.0 

.0 

1.0 

1.2 

.0

Fluoride 

(F)

0.2 

.0

Nitrate 

(NO,)

0.3 

.0

Bo

ron 

(B)

0.

.

.

.

.

.

.

.

.

.

.

.
SAN JOAQUIN RIVER BASIN Continued 

TUOLUMNE RIVER AT HICKMAN, CALIF.

LOCATION. At gaging station about 0.6 mile south of Waterford and 1 mile north of Hickman, Stan

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Gaging station maintained and operated by State of California Department of Water Reso

to September 1957 given in State of California Bulletin No. 23 as Tuolumne River at Hickman B

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 10, 1956 .....

Jan. 10, 1957 .....

Mar. 21..........

May 16 ...........

Discharge 

(eta)

322 

848 

977 

811 

192 

2,190

131 

177 

160 

116 

111 

118

Silica 

(Si02)

44 

53

Iron 

(Fe)

0.03 

.00

Calcium 

(Ca)

10 

.6.8 

6.0 

3.8 

16 

5.0

27 

24 

17

27

Magnesium 

(Mg)

3.4 

2.2 

2.2 

3.4 

5.4 

2.6

9.8 

9.1 

6.6

11

Sodium 

(Na)

15 

7.9 

5.4 

5.9 

29 

2.7

46 

41 

28 

53 

53 

55

Potassium 

(K)

1.7 

1.3 

1.1 

.8 

2.5 

.7

4.4 

4.1 

2 9

5.3

Bicarbonate 

(HCO.)

41 

32 

26 

28 

55 

25

97 

100 

64 

102 

101 

104

Sulfate 

(SO.)

3.8 

1.9

Chloride 

(Cl)

28 

14 

8.5 

10 

56 

3.7

94 

72 

56 

103 

103 

106

Fluoride 

(F)

0.3 

.2

Nitrate 

(NO,)

0.9 

.5

Bo

ron 

(B)

0.1

.0

.0

.0

.0

.0

. 

.0

.0

.1

.0

.0
SAN JOAQUIN RIVER BASIN Continued 

TUOLUMNE RIVER AT TUOLUMNE CITY, CALIF

LOCATION. At gaging station on downstream side of bridge at Tuolumne City, Stanislaus County, a

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Gaging station maintained and operated by City of San Francisco in cooperation with th

Records of discharge for water year October 1956 to September 1957 given in State of Californ

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 11, 1956 .....

Dec. 13 ..........

Jan. 10, 1957 ..... 

Feb. 21 ..........

Mar. 21..........

May 16 ...........

June 13...........

July 11 ...........

Discharge 

(cfs)

815 

905 

1,560 

960 

460 

2,540

415 

380 

655 

345 

325 

395

Silica 

(Si02)

37 

41

Iron 

(Fe)

0.02 

.00

Calcium 

(Ca)

23 

20 

15 

25 

30 

7.6

47 

47 

24

42

Magnesium 

(Mg)

6.3 

5.0 

5.2 

3.3 

9.0 

3.2

14 

13

7.7

13

Sodium 

(Na)

38 

31 

23 

34 

53 

9.4

83 

91 

35 

95 

96 

81

Potassium 

(K)

3.0 

2.2 

1.9 

2.4 

3.5 

1.2

6.8 

6.4 

3.0

6.4

Bicarbonate 

(HCO,)

77 

64 

57 

67 

90 

29

137 

134 

67 

146 

146 

141

Sulfate 

(SO.)

8.6 

6.7

Chloride 

(Cl)

74 

63 

46 

70 

108 

20

166 

170 

74 

178 

183 

153

Fluoride 

(F)

0.4 

.2

Nitrate 

(NO,)

3.6 

.2

Boron 

(B)

0. 1

.1

.0

.0

.0

.0

.1

.1

.0

.1

.1

.0
SAN JOAQUIN RIVER BASIN Continued 

M. I. 0. LATERAL NO. 5 SPILLWAY, NEAR MODESTO, 

LOCATION. At gaging station at mouth of lateral, 500 feet west of Paradise Road, 0.7 mile south o

Stanislaus County. 

RECORDS AVAILABLE. Chemical analyses: March to September 1957.

Water temperatures: March to September 1957. 

EXTREMES, March to September 1957. Dissolved solids: Maximum, 434 ppm May 10; minimum, 124 ppm 

Hardness: Maximum, 160 ppm May 10; minimum, 48 ppm Sept. 19-30.

Specific conductance: Maximum daily, 775 micromhos May 10; minimum daily, 186 micromhos Sept. 

Water temperatures: Maximum, 89°F July 19.

REMARKS. Records of specific conductance of daily samples available in district office at Sacram

Modesto Irrigation District. Discharge data furnished by Modesto Irrigation District.

Chemical analyses, in parts per million, March to Septem

Date of collection

Mar. 28-30, 

Apr. 1-7, 1957...

Apr. 22-24 .......

May 1-9..........

July 1-3 ..........

Aug. 13-17 .......

Sept 1-15

Sept. 19-30.......

Weighted average a

Mean 

discharge 

(cfs)

4.9 

23.4 

18.9 

4.2

7.3 

8.6 

21.7 

7.9 

12.4

15.4 

14.0 

26.7 

7.6 

2.2

13.6 

8.6 

11.2 

13.1 

18.6

13.6

Silica 

(SiO.)

25 

23 

37 

24

34 

52 

25 

37 

34

29 

21 

19 

24 

29

26 

29 

26 

20 

18

25

Iron 

(Fe)

0.01 

.01

.01

.00 

.04 

.01 

.00 

.02

.00 

.01

.01 

.02 

.00 

.00 

.02

bO.01

Calcium 

(Ca)

19 

18 

24 

18

28 

36 

16 

27 

22

19 

17 

14 

20 

26

19 

26 

21 

17 

13

18

Magnesium 

(Mg)

7.4 

6.1 

16 

6.1

8.8 

17 

8.5 

12 

10

12 

3.8 

3.8 

4.6 

7.8

4.4 

6.7 

4.7 

5.7 

3.8

6.8

Sodium 

(Na)

33 

23 

51 

28

47 

95 

31 

59 

54

44 

29 

23 

35 

48

32 

40 

34 

34 

20

33

Potassium 

(K)

2.7 

2.3 

3.0 

1.9

2.6 

5.0 

2.1 

2.7 

2.8

2.3 

2.1 

1.8 

2.2 

2.0

1.9 

2.0 

1.9 

1.9 

1.6

2.2

Bicarbonate 

(HCO,)

110 

86 

152 

93

144 

228 

104 

154 

142

124 

82 

71 

94 

138

101 

122 

101 

92 

63

101

SuUate 

(SO,)

5.8 

5.8 

1.0 

2.9

1.9 

12 

4.8 

6.7 

1.0

1.9 

3.8 

3.8 

4.8 

5.8

3.5 

4.2 

4.8 

4.8 

3.8

4.2

Chloride 

(Cl)

37 

30 

79 

37

62 

126 

34 

80 

67

58 

37 

30 

44 

61

35 

50 

40 

40 

26

41

Fluoride 

(F)

0.2 

.2

. 1 

. 1

.1 

.1 

.2

.2 

.1 

.1 

.1

.1 

. 1 

. 1 

. 1 

.1

bO. 1

Nitrate 

(NO,)

5.0 

3.3 

3.5 

2.5

4.4 

7.1 

2.0 

4.4 

3.9

2.9 

2.9 

3.0 

4.4 

3.7

3.6 

6.1 

4.1 

2.2 

2.1

3.1

Boron 

(B)

0. 10 

.05 

.02 

.02

. 10 

.10 

.16 

.03 

.17

.00 

.05 

.04 

.14 

.03

.08 

.03 

.01 

.07 

.06

0.08

a Represents 85 percent of runoff for water year October 1956 to September 1957. 

b Includes estimates for missing data.
264 PACIFIC SLOPE BASINS IN CALIFORNIA 

SAN JOAQUIN RIVER BASIN Continued 

M. I. D. LATERAL NO. 5 SPILLWAY NEAR MODESTO, CALIF. Continued

Temperature (°F) of water, March to September 1957 

/Once daily measurement, generally between 8 a. m. and 6 p. rs\J

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

Average

Oct. Nov. Dec. Jan. Feb. Mar.

..

..

..

_.

--

..

..

..

_.

--

..

__

..

--

..

_.

..

--

..

..

..

--

62

61

62

68

63

--

Apr.

64

58

62

64

65

65

61

..

65

62

65

63

64

63

63

__

59

61

59

65

66

_

68

63

68

68

71

68

--

64

May

73

73

71

._

73

68

69

70

68

69

..

68

65

63

59

65

62

67

65

67

68

70

70

69

71

_

_

_

--

--

June

_

68

_

75

68

68

70

73

_

73

75

79

76

78

82

85

81

76

75

70

_

_

88

_

73

75

72

--

--

July

75

74

76

75

73

76

72

78

75

76

79

72

73

71

85

75

81

89

--

72

78

72

77

71

83

77

78

72

74

74

76

Aug.

_

68

71

73

--

68

73

76

71

73

72

70

69

70

71

..

68

72

72

69

69

74

68

70

67

68

67

64

68

63

--

70

Sept.

..

_.

..

--

_

74

66

65

67

68

73

69

71

63

..

_

..

70

71

68

69

..

67

69

67

67

67

67

-.

--
SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER AT MAZE ROAD BRIDGE, NEAR MODEST

LOCATION. On downstream side of Maze Road Bridge, 0.2 mile below gaging station at Hetch Hetchy C

12 miles west of Modesto, Stanislaus County.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Gaging station maintained and operated by City of San Francisco in cooperation with the 

Records of discharge for water year October 1956 to September 1957 given in State of California 

Crossing.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 11, 1956.. ...

Dec. 13 ..........

Jan. 10, 1957.....

Mar. 21..........

May 16 ...........

Sept. 27....... ...

Discharge 

(cfs)

1,630 

1,450 

1,735

1,235 

3,650

640 

1,010 

2,650 

745 

700 

1,010

Silica 

(SiO,)

24 

33

Iron 

(Fe)

0.02 

.01

Calcium 

(Ca)

30 

34 

24 

36 

42 

14

54 

45 

18

43

Magnesium 

(Mg)

13 

14 

13 

16 

20 

8.8

25 

18 

6.0

17

Sodium 

(Na)

67 

77 

56 

88 

107 

31

115 

107 

28 

110 

105 

92

Potassium 

(K)

3 2 

1.4 

1.9 

2. 8 

4.0 

1.6

5.0 

4.0 

2.0

5.0

Bicarbonate 

(HCO,)

120 

118 

90 

122 

140 

59

155 

150 

72 

182 

157 

157

Sulfate 

(S04 )

61

55

Chloride 

(Cl)

103 

117 

84 

142 

150 

45

205 

154 

42 

172 

165 

140

Fluoride 

(F)

0.4 

.0

Nitrate 

(NO,)

4.0 

2.9

Boron 

(B)

0. 10 

.16 

. 16 

. 12 

.43 

. 19

.33 

.22 

.03 

.26 

.25 

.03
SAN JOAQUIN RIVER BASIN Continued 

STANISLAUS RIVER AT TULLOCH DAMSITE, NEAR KNIGHTS FERR

LOCATION. On left bank one mile downstream from Tulloch Dam, 2.4 miles downstream from Goodwin Dam, a

County.

RECORDS AVAILABLE.--Chemical analyses: October 1956 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, In parts per million, water year October 1956 to S

Date of collection

Feb. 20 ............

Sept. 26 ............

Discharge 

(cfs)

Silica 

(SiO.)

11

10

Iron 

(Fe)

0.03

.02

Calcium 

(Ca)

9.9 

8.2 

11 

12 

10 

7.4

6.4 

6.0

7.2

Magnesium 

(Mg)

2.7 

2. 1 

3.5 

4.4 

3.2 

3.8

1.9 

.6

1.7

Sodluffl 

(Na)

2.3 

2.1 

3.1 

4.0 

3.8 

2.5

2.2 

2.2 

2.2 

2.0 

2.4 

2.1

Potassium 

(K)

1.3 

1.0 

1.1 

1.0 

1.1 

.8

.7 

.6 

.9

1.2

Bicarbonate 

(HCO,)

48 

42 

55 

62 

47 

35

28 

23 

25 

22 

33 

36

Carbonate 

(CO,)

Sulfate 

(S04)

2.9 

.0

Chloride 

(Cl)

0.2 

1.1 

1.0 

2.5 

2.0 

1.6

.5 

.4 

.0 

.8 

.7 

.4

Fluoride 

(F)

0.2 

.0

Nitrate 

(NO,)

0.2 

.4

Bo

ron 

(B)

0.1

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0
SAN JOAQUIN RIVER BASIN Continued 

STANISLAUS RIVER NEAR MOUTH, NEAR VERNALIS, C

LOCATION. At gaging station 2.9 miles above mouth, Stanislaus County, and about 6 miles northeas

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Gaging station maintained and operated by State of California Department of Water Resou

to September 1957 given in State of California Bulletin No. 23, as Stanislaus River near Mouth.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 11, 1956...,. 

Nov. 16 ..........

Jan. 10, 1957 ..... 

Feb. 21 ..........

Sept. 27..........

Discharge

(cfs)

249 

527 

375 

299 

178 

759

93 

427 

1,150 

98 

82 

228

Silica 

(SiO.)

17 

35

Iron 

(Fe)

0.10 

.00

Calcium 

(Ca)

26 

14 

18 

20 

28 

11

25 

12 

10

24

Magnesium 

(Mg)

8.9 

5.1 

8.0 

7.1 

12 

6.4

11 

2.9 

2.1

8.4

Sodium 

(Na)

16 

6.9 

10 

10 

18 

5.1

16 

5.7 

3.3 

15 

17 

15

Potassium 

(K)

3.1 

1.4 

1.8 

1.6 

2.3 

1.2

2.4 

1.2 

1.0

2.8

Bicarbonate 

(HCO,)

149 

76 

101 

106 

157 

65

146 

59 

45 

134 

150 

133

Sulfate 

(SO,)

4.4 

11

Chloride 

(Cl)

8.0 

3.6 

4.5 

5.2 

10 

3.0

9.0 

1.6 

.3 

8.5 

9.6 

7.2

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

1.2 

1.3

Boron 

(B)

0.08 

.00 

.12 

.00 

.04 

.09

.06 

.00 

.00 

.08 

.00 

.01
SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER NEAR VERNALIS, CALIF.

LOCATION. At gaging station at Durham Ferry highway bridge, 3 miles downstream from Stanislaus R

County.

DRAINAGE AREA. 14,010 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1957.

Water temperatures: March 1951 to September 1957.

Sediment records: November 1956 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 529 ppm Feb. 18-28; minimum, 89 ppm June 8-11.

Hardness: Maximum, 236 ppm Apr. 11; minimum, 31 ppm June 8-11.

Specific conductance: Maximum daily, 1,020 micromhos Feb. 24; minimum daily, 104 micromhos Jun

Water temperatures: Maximum, 76°F June 25, 27, 28, July 6; minimum, 44°F Jan. 28-31.

Sediment concentrations: Maximum daily, 356 ppm May 21; minimum daily, not determined.

Sediment loads: Maximum daily, 5,370 tons May 21; minimum daily, not determined. 

EXTREMES, 1951-57. Dissolved solids: Maximum, 640 ppm Nov. 11-17, 1955; minimum, 54 ppm June 1-

Hardness: Maximum, 244 ppm Aug. 1-10, 1954; minimum, 23 ppm June 1-10, 1952.

Specific conductance: Maximum daily, 1,150 micromhos Nov. 14, 1955; minimum daily, 60 micromho

Water temperatures: Maximum, 78°F July 19, 1951, June 22, July 29, 1954, July 23, 26, 1956; mi

REMARKS. Records of specific conductance of daily samples available in district office at Sacram

October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-13, 1956 .

Jan. 1-6, 1957 ..

Jan. 22-31 ......

Mean 

discharge 

(cfs)

1,934 

1,940 

2,073 

1,974 

1,732 

1,943 

2,000 

2,854

2,564 

2,450 

2,847 

2,060 

1,962 

1,995 

1,920 

1.787

Silica 

(SiO,)

29 

31 

28 

28 

30 

25 

24 

18

20 

19 

20 

22 

23 

24 

24 

27

Iron 

(Fe)

0.01 

.00 

.02 

.01 

..02 

.02 

.03 

.04

.00 

.04 

.00 

.00 

.00 

.00 

.00 

.00

Calcium 

(Ca)

32 

32 

28 

32 

34 

30 

28 

19

22 

23 

20 

25 

26 

30 

32 

32

Magnesium 

(Mg)

14 

13 

12 

14 

15 

13 

12 

8.9

8.0 

12 

7.3 

10 

12 

15 

15 

18

Sodium 

(Na)

65 

63

54 

65 

67 

59 

59 

35

41 

48 

38 

45 

53 

68 

74 

80

Potassium 

(K)

3.2 

3.3 

3.3 

2.9 

3.0 

2.6 

2.5 

2.1

1.8 

1.8 

1.6 

1.8 

2.2 

2.8 

2.4 

3.3

Bicarbonate 

(HCO,)

129 

130 

117 

119 

126 

107 

111 

72

77 

94 

71 

68 

94 

117 

120 

130

Sulfate 

(SO,)

36 

31 

28 

42 

44 

37 

39 

26

30 

34 

28 

35 

35 

49 

38 

58

Chloride 

(Cl)

96 

97 

82 

99 

104 

90 

86 

56

60 

69 

54 

76 

83 

96 

112 

111

Fluoride 

(F)

0.1 

.1 

.1 

.4 

.2 

.2 

.1 

.1

.1 

.1 

.1 

.2 

.0 

.1 

.1 

.1

Nitrate 

(NO,)

2.8 

2.6 

2.8 

2.8 

2.4 

2.2 

2.4 

2.0

2.2 

2.6 

1.8 

2.6 

3.1 

3.6 

2 9 

4.0

Boron 

(B)

0.12 

.20 

.09 

.15 

.29 

.21 

.22 

.18

.12 

.06 

.11 

.11 

.09 

.20 

.24 

.25
Feb. 1-12, 1957 .

Mar. 20-26 .....

Mar. 27-Apr. 3 .

July 20-31 ......

Sept. 17-30 .....

Weighted average c

1,692 

2,384

1,510

2,907

4,010 

4,230

2,012 

851

654

1,464

4,658

5,084

1,469

876

732

680

732

785

1,009

1,304

1,992

26

29

23

27

20 

14

30 

30

28

18

34

33

33

33

37

33

24

.00 

.00

.00

.03

.01

.01 

.03

.01 

.00

.05

.01

.07

.05

.00

.00

.00

.00

.00

.00

.00

.01

0.02

34

40

33

19 

16

29 

48

55

36

16

40

48

46

45

44

38

28

19 

16

20

18

13

7.4 

6.8

12 

20

24

12

15

13

5.1

4.0

5.6

4.7

14

18

20

21

20

20

20

18

12

86 

75

100

88

64

34 

28

56 

93

107

54

74

70

25

63

96

96

95

99

93

95

82

57

2 8 

3 3

3.6

3.0

3.3

2.1 

1.6

2.7 

4.2

4.4

3.1

5.0

4.0

3.5

2.4

2.0

1.8

2.6

3.8

4.4

4.8

5.0

4.8

4.8

5.0

4.7

2.9

130 

122

154

138

118

71 

58

104 

147

152

120

123

66

116

148

155

169

161

169

160

103

63 

56

65

69

52

29 

22

35 

35

60

49

41

15

9.6

44

55

52

70

51

46

36

121 

105

142

129

94

49 

40

84 

168

199

82

115

108

32

22

14

96

132

154

161

155

155

149

146

156

125

83

.1

.1

.3

.2

.3

.2 

.2

. 1 

.2

.2

.2

.2

.4

.2

.2

.0

.2

.2

.3

.3

.3

.3

.3

.2

.1 

.0

0.2

3.9 

3.8

3 9

1.9

4.1

2.5 

1.8

2.4 

3.2

3.5

1.7

1.7

1.0

1.8

2.1

.7

1.6

1.8

1.6

1.6

2.3

2.4

.2

.2

.3

.2

.1

.0

.0

.1

.4

.2

3

.2

.0

2

.1

.2

.2

.2

.2

.2

0.1

a Not included for computation of weighted averages.

b Calculated from determined constituents.

c Represents 100 percent of runoff for water year October 1956 to September 1957.
270 PACIFIC SLOPE BASINS IN CALIFORNIA

SAN JOAQUIN RIVER BASIN Continued

SAN JOAQUIN RIVER NEAR VERNALIS, CALIF. Continued

Temperature (°f) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 7:30 a. m.J

Day

1

2

3

4

5

6

7

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Average

Oct.

68

68

68

67

67

67

68

67

66

66

65

64

63

63

61

61

62

61

61

60

62

62

60

55

55

56

58

56

55

56

54

62

Nov.

55

55

53

54

55

55

55

56

56

57

58

58

55

52

51

52

52

53

52

50

49

49

50

50

50

50

50

50

50

50

~

53

Dec.

50

50

50

51

51

52

50

48

46

47

50

51

52

53

50

50

50

50

50

49

48

45

46

45

45

45

45

45

45

47

46

48

Jan.

45

45

46

46

47

46

47

48

46

45

45

48

50

50

50

50

49

48

48

48

48

47

48

48

48

45

45

44

44

44

44

47

Feb.

45

48

47

47

47

49

50

50

50

51

53

53

55

56

56

57

58

57

56

57

56

56

56

58

58

60

59

60

..

--

54

Mar.

60

59

58

58

58

59

58

60

60

58

60

60

57

55

55

54

49

54

50

56

54

53

53

54

55

56

57

61

62

60

57

Apr.

58

56

58

61

63

63

58

60

61

61

60

61

62

64

61

61

60

58

59

59

58

60

61

62

62

63

65

66

68

68

--

61

May

66

66

65

66

69

69

68

67

66

64

64

65

65

64

62

65

67

67

64

62

58

60

70

68

66

64

63

60

.67

68

67

65

June

68

69

68

69

68

66

65

66

65

64

65

68

67

68

67

65

68

72

72

72

70

71

73

75

76

75

76

76

75

74

--

70

July

73

72

72

74

75

76

75

73

75

74

74

75

72

71

72

74

75

74

72

72

71

72

72

73

73

74

74

75

75

73

71

73

Aug.

73

74

75

73

70

69

69

70

71

71

70

70

72

73

72

71

70

71

71

71

70

71

72

73

72

70

69

67

65

66

68

71

Sept.

68

70

70

70

70

71

74

74

74

73

70

69

68

69

68

68

68

68

67

67

67

68

69

69

68

68

70

70

68

65

~

69
SAN JOAQUIN RIVER BASIN 

SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER NEAR VERNALIS, CALIF.--Continued 

Suspended sediment, November 1956 to September 1957

271

Day

1. .....

2. .....

3. .....

4. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

11......

12. .....

13. .....

14. .....

15. .....

16......

17. .....

18. ..... 

19. .....

20. .....

21. .....

22. .....

24. ..... 

25. .....

26. .....

28......

29. .....

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

6. .....

8......

10. .....

13. ..... 

14 ..... 

15. .....

16. .....

19. ..... 

20. .....

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

October

Mean 

discharge

(cfs)

Suspended sediment

Mean 

concentration 

(ppm)

Tons 

per 

day

January

1,990 

2,010 

1,850 

1,990 

1,960

1,970 

1,830 

1,840 

1,910 

1,910

2,010 

1,970 

2,160 

2,040 

1,860

1,990 

2,080 

2,110 

2,110 

2,120

1,970 

1,770 

1,820 

1,890 

1,810

1,810 

1,770 

1,770 

1,660 

1,740 

1,760

59,560

44

58

40

70 

75

80 

92

62

44 

24

--

I 260 

f 250 

I 400 

I 480 

I 320

> 160

9,510

November

Mean 

discharge 

(cfs)

1,780 

1,720 

1,710 

1,680 

1,770

1,900 

1,920 

1,920 

1,940 

1,930

1,900 

1,910 

1,960 

1,910 

1,970

2,000 

1,990 

2,000 

1,970 

1,930

2,620 

3,100 

3,040 

2,840 

3,060

2,850 

2,790 

2,890 

2,720 

2,630

66,350

Suspended sediment

Mean 

concentration 

(ppm)

38 

32 

32 

32

44

54

44

54

51 

77

40

"

Tons 

per 

day

183 

149 

a 148 

145 

a 210

277 

e260

. 270

361

I 580

> 310

9,053

February

1,820 

1,770 

1,750 

1,600 

1,540

1,630 

1,680 

1,680 

1,660 

1,770

1,750 

1,660 

2,120 

2,510 

2,680

2,500 

2,110 

1,780 

1,630 

1,690

1,510 

1,350 

1,350 

1,340 

1,420

1,750 

1,660 

1,660

49,370

56 

47

93 

59

105

210 

74

65 

103

170

-

I 240

. 320

601 

> 1,200

> 310 

I 570

13,551

December

Mean 

discharge

(cfs)

2,730 

2,700 

2,450 

2,400 

2,820

2,880 

2,830 

2 920 

2! 800 

2,340

2,280 

2,540 

2,450 

2,420 

2,510

2,490 

2,260 

2,340 

2,850 

2,890

2,990 

3,020 

2,850 

2,480 

2,250

1,990 

1,740 

2,000 

2,160 

2,210 

2,070

77,660

Suspended sediment

Mean 

concentration 

(ppm)

39

54

45 

32

36 

40

44

31 

63 

43

--

Tons 

per 

day

f 300

I 360 

242

250

 280

> 280

8,772

March

1,690 

1,720 

1,940 

2,230 

2,150

3,340 

4,690 

4,150 

3,750 

3,250

2,670 

2,510 

2,720 

3,030 

3,160

3,030 

3,120 

3,040 

3,040 

3,710

4,230 

4,470 

4,340 

4,000 

3,830

3,490 

2,770 

2,390 

2,210 

2,080 

1,930

94,680

126

211 

240 

160 

140 

133

120 

147

114

104 

99 

95 

89

--

I 700

s2,020 

3,040 

al,800 

a 1,400 

1,170

> 950

> 1,200

1,140

1,190 

1,190 

1,110 

961

700

32,971

e Estimated.

s Computed by subdividing day.

a Computed from estimated concentration graph.
272 PACIFIC SLOPE BASINS IN CALIFORNIA 

SAN JOAQUIN RIVER BASIN Continued

SAN JOAQUIN RIVER NEAR VERNALIS, CALIF.--Continued 

Suspended sediment, November 1956 to September 1957 Continued

Day

1. .....

2. .....

4. .....

5. .....

6. .....

7. .....

8. .....

9. .....

10. .....

11......

12. .....

13. .....

14. ..... 

15. .....

16......

17. .....

18. ..... 

19......

21......

22. .....

24...... 

25. .....

26. ..... 

27. .....

30. ..... 

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

6......

8...... 

9. ..... 

10. .....

11......

13. ..... 

14. ..... 

15......

16. .....

18. ..... 

19. ..... 

20. .....

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29...... 

30. ..... 

31. ..... 

Total.

April

Mean 

discharge 

(cfs)

1,810 

1,610 

1,300 

1,060 

924

798 

726 

744 

702 

654

654 

644 

649 

714 

1,040

1,100 

1,010 

1,340 

1,610 

1,750

2,070 

2,230 

2,130 

1,960 

1,940

2,000 

1,960 

1,860 

1,510 

1,280

39,789

Suspended sediment

Mean 

concentration 

(ppm)

95 

84

60 

55

48 

87

74 

112

114 

113

120

117 

97

-

Tons 

per 

day

464 

365

V 190 

1 120

I 88 

> 250 

570

660 

> 490

10,739

July

1,400 

1,240 

1,160 

1,150 

1,160

1,090 

1,090 

1,100 

1,050 

954

876 

804 

744 

756 

864

780 

708 

720 

690 

638

744 

888 

888 

762 

684

632

654 

696 

768 

744 

684

27,118

110 

120

128 

110

104 

115

99 

87 

96 

100 

113

115 

102

105 

103 

110

I 380 

\ 340

I 240

208 

166 

187 

a 190 

195

I 220 

> 200

8,046

Total discharge for period November to & 

Total load for period November to Septem

May

discharge

(cfs)

1,130 

1,090 

1,080 

1,070 

1,090

1,070 

1,010 

918 

1,030 

1,370

1,460 

1,340 

1,350 

1,240 

1,330

1,470 

1,490 

1,630 

1,960 

3,520

5,590 

6,490 

6,150 

5,390 

5,250

4,910 

4,390 

3,870 

3,730 

3,520 

3,080

80,018

Suspended sediment

Mean 

concentration 

(ppm)

81

75 

83

95 

87

107 

120 

289

356 

263 

185 

167 

152

143 

140 

128 

130 

116 

100

-

Tons 

per 

day

\ 240 

f 210

340

471 

a 640 

s2,900

5,370 

4,610 

3,070 

2,430 

2,150

1,900 

1,660 

1,340 

1,310 

1,100 

832

34,543

August

102

555 

565 

672

690 

666 

732 

780 

804

846 

936 

864 

726 

660

666 

649 

786 

924 

858

798 

822 

738 

732 

762

822 

810 

750 

810 

846 

894

23,338

102 

100 

122

120 

118 

106 

110

90 

80 

82

62

70 

68

66 

60 

55

51 

44 

58

--

V 160

221

a 220 

212 

209 

232

180 

> 140

120

4, 834

June

Mean 

discharge 

(cfs)

2,910 

3,390 

4,320 

5,140 

5,640

6,390 

7,800 

8,450 

8,690 

9,260

8,370 

5,790 

3,780 

2,890 

2,730

3,060 

3,110 

2,690 

2,210 

1,830

1,590 

1,770 

1,960 

1,690 

1,420

1,300 

1,240 

1,150 

1,070 

1,140

112,780

Suspended sediment

Mean 

concentration 

(ppm)

108 

130 

130 

145 

140

158

147 

139 

133 

120 

127

139 

107 

100 

98 

92

102 

98 

100 

83

77

74 

71 

66 

65 

89

-

Tons 

per 

day

849 

al,200 

1,520 

2,010 

2,130

2,730 

e 4, 400

3,320 

2,170 

1,360 

936 

936

1,150 

898 

726 

585 

455

438 

468 

529 

379 

295

a 260 

a 240 

205 

a!90 

274

43,853

September

1,010 

1,120 

1,050 

990 

936

918 

924 

1,020 

1,060 

942

966 

990 

1,030 

1,010 

1,050

1,190 

1,160 

1,190 

1,220 

1,260

1,350 

1,370 

1,410 

1,280 

1,240

1,240 

1,280 

1,350 

1,410 

1,490

34,456

61 

72

77 

71 

60

69 

68

80 

78 

72

78

79 

91 

97

ber ...................................................

I 180 

> 200

>. 260 

> 330

7,150

665,119 

183,022

e Estimated.

s Computed by subdividing day.

a Computed from estimated concentration graph.
SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER NEAR VERNALIS, CALIF. Cont

Particle-size analyses of suspended sediment, November 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

N, in native water; P, plpet; S, sieve; V, visual accumulation tube; W

Date 

of 

collection

Mar. 6, 1957 ....

June 11 ..........

Time

1 :30 a. m. 

3:30 a.m. 

11:10 a. m.

Discharge 

(cfs)

3,440 

5,880 

8.570

Water 

temperature 

C F)

62 

62 

67

Suspended 

Concentration 

of sample 

(ppm)

192 

266 

173

Concentration 

of suspension 

analyzed 

(ppm)

938 

1,480 

9S5

Percent f

0.002 0.004

42 

22

16

0.008 0.016

56 

44 

29
SAN JOAQUIN RIVER BASIN Continued 

#AN JOAQUIN RIVER AT MOSSDALE, CALIF.

LOCATION. At boat landing on left bank at Mossdale Bridge at Mossdale, San Joaquin County, opposite t

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Tidal gaging station maintained and operated by State of California Department of Water Reso

tion due to tidal effects from Suisun Bay.

Chemical analyses, In parts per million, water year October 1956 to S

Date of collection

Oct. 17, 1956 .......

Nov. 20 ............

Dec. 18 ............

Feb. 14 ............

May 8 ..............

Sept. 11............

Discharge 

(cfs)

Silica 

(SiOJ

31 

34

Iron 

(Fe)

0.00 

.19

Calcium 

(Ca)

30 

28 

25 

35 

31 

34

48 

46 

18

45

Magnesium 

(Mg)

11 

13 

13 

15 

15 

15

22 

20 

7.1

20

Sodium 

(Na)

54 

56 

50 

80 

76 

69

95 

93 

30 

97 

99 

100

Potassium 

(K)

2.7 

2.6 

2.3 

3.2 

3.0 

3.1

4.2 

3.6 

1.9

5.4

Bicarbonate 

(HCO.)

125 

107 

96 

141 

116 

126

148 

146 

74 

160 

171 

177

Carbonate 

(CO,)

Sulfate 

(804)

51 

50

Chloride 

(Cl)

82 

89 

83 

108 

94 

98

165 

160 

46 

165 

150 

154

Fluoride 

(F)

0.2

.4

Nitrate 

(NO,)

1.4 

.0

Bo

ron 

(B)

0.1

.1

.1

.3

.2

.1

.1

.1

.2

.1

.1

.2
SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER AT GARWOOD BRIDGE, NEAR STOCKTON

LOCATION. At boat landing on left bank by Garwood Bridge on State Highway 4, opposite tidal gagin

County.

RECORDS AVAILABLE. Chemical analyses: October 1953 (revised) to September 1957. 

REMARKS. Tidal gaging station maintained and operated by U. S. Bureau of Reclamation. No dischar

effects from Suisun Bay.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 17, 1956 ..... 

Nov. 19 ..........

Dec. 17 ..........

Jan. 14, 1957..... 

Feb. U ..........

Mar. 11..........

Apr. 15 ..........

May 7 ...........

July 16 ...........

Sept. 11..........

Discharge 

(cfs)

Silica 

(Si02)

21 

20

Iron 

(Fe)

0.00 

.01

Calcium 

(Ca)

31 

30 

23 

32 

35 

35

30 

31 

18

38

Magnesium 

(Mg)

12 

13 

11 

16 

19 

15

15 

13 

7.8

16

Sodium 

(Na)

58 

62 

41 

70 

90 

72

57 

55 

29 

58 

72 

87

Potassium 

(K)

3.1 

2.8 

2.3 

3.0 

3.2 

4.0

6.7 

4.0 

2.0

6.4

Bicarbonate 

(HCO,)

125 

121

133 

119

141 

142 

80 

138 

186 

183

Sulfate 

(S04 )

28 

26

Chloride 

(Cl)

88 

92 

68 

110 

130 

104

77 

78 

40 

79 

93 

122

Fluoride 

<F)

0.2 

.3

Nitrate 

(NO,)

2.0 

1.0

Boron 

(B)

0.11 

.14 

.13 

.15 

.35 

22

. 18 

.14 

.19 

.07 

.35 

.26
SAN JOAQUIN RIVER BASIN Continued 

CALAVERAS RIVER AT JENNY LIND, CALIF.

LOCATION. At bridge on Milton Road 70 feet (revised) upstream from gaging station, 0.2 mile south 

downstream from Cosgrove Creek. 

DRAINAGE AREA. 395 square miles.

RECORDS AVAILABLE. Chemical analyses: November 1954 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 18, 1956.....

Dec. 17 ..........

Jan. 14, 1957.....

July 17 ...........

Sent. 10..........

Discharge 

(cfs)

a 7.0 

21 

30 

143 

109 

35

14 

13 

210 

190 

190 

0

Silica 

(SiO,)

16 

23

Iron 

(Fe)

0.02 

.00

Calcium 

(Ca)

36 

30 

28 

29 

24 

18

21 

21 

20

29

Magnesium 

(Mg)

14 

11 

10 

8.3 

7.9 

11

8.5 

6.9 

6.3

10

Sodium 

(Na)

9.6 

11 

7.5 

7.7 

7.2 

7.1

6.1 

5.9 

5.2 

6.1 

7.3 

8.1

Potassium 

(K)

2.1 

1.6 

1.6 

1.4 

1.2 

1.5

1.3 

1.3 

1.2

2 3

Bicarbonate 

(HCOS )

181 

141 

127 

126 

104 

105

101 

98 

92 

102 

121 

136

Sulfate 

(SO.)

9.6 

11

Chloride 

(Cl)

9.0 

10 

2.5 

7.4 

7.5 

4.5

4.5 

3.5 

2.5 

3.4 

4.5 

7.0

Fluoride 

(F)

0.0 

.0

Nitrate 

(NO,)

0.4 

.5

Boron 

(B)

0.00 

.00 

.08 

.06 

.00 

.12

.06 

.00 

.07 

.14 

.00 

.00

a Daily mean discharge (cfs).
SAN JOAQUIN RIVER BASIN Continued 

STOCKTON SHIP CHANNEL NEAR RINDGE PUMP, ON RINDGE TRAC

LOCATION. At boat landing on rigbt bank of ship channel just below confluence of Fourteen Mile Sloug

of Stockton, San Joaquin County.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Tidal gaging station maintained and operated by State of California Department of Water Res

due to tidal effects from Suisun Bay.

Chemical analyses. In parts per million, water year October 1956 to 

Date of collection

Feb. 13 ............

Sept. 10 ............

Discharge 

(cfs)

Silica 

(SiO.)

23 

23 

18 

21 

22 

22

6.4 

11

Iron 

(Fe)

0.00 

.03 

.02 

.01 

.03 

.08

.00 

.05

Calcium 

(Ca)

35 

34 

26 

41 

41 

25

26 

29 

12

25

Magnesium 

(Mg)

14 

15 

13 

18 

18 

11

12 

13 

4.6

10

Sodium 

(Na)

69 

68 

49 

68 

81 

37

40 

49 

17 

27 

35 

44

Potassium 

(K)

4.3 

3.5 

2.4 

2.9 

3.1 

3.5

2.4 

3.4 

1.8

3.4

Bicarbonate 

(HCO.)

143 

121 

88 

89 

120 

94

90 

106 

51 

76 

89 

113

Carbonate 

(CO,)

Sulfate 

(S04)

27 

51 

37 

65 

72 

33

35 

19

Chloride 

(Cl)

106 

106 

77 

117 

125 

54

68 

79 

25 

39 

49 

67

Fluoride 

(F)

0.2 

.1 

.1 

.3 

.2 

.3

.2 

.0

Nitrate 

(NO,)

2.7 

4.1 

6.9 

14 

6.3 

4.2

2.0 

1.6

B

r

(B

0
SAN JOAQUIN RIVER BASIN Continued 

OLD RIVER AT SOUTH TIP OF FABIAN TRACT, NEAR TRACY, 

LOCATION. At southern tip of Fabian Tract on left bank at trash rack of pump intake at end of Lammer

north of Tracy, San Joaquin County.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 17, 1956 .......

Dec. 18 ............

Jan. 15, 1957.......

Mar. 12............

Sent. 11............

Discharge 

(cfs)

Silica 

(SiO.)

23 

27

Iron 

(Fe)

0.00 

.00

Calcium 

(Ca)

35 

34 

29 

32 

40 

37

58 

44 

21

43

Magnesium 

(Mg)

13 

17 

12 

15 

20 

16

27 

18 

7.9

19

Sodium 

(Na)

64 

68 

50 

69 

95 

76

108 

81 

34 

93 

101 

95

Potassium 

(K)

3.4 

3.6 

2.8 

2.6 

3.0 

3.5

4.0 

3.6 

2.0

5.2

Bicarbonate 

(HCO,)

135 

132 

107 

118 

135 

122

156 

141 

84 

163 

175 

166

Carbonate 

(CO,)

Sulfate 

(SOJ

46 

50

Chloride 

(Cl)

100 

102 

80 

105 

136 

113

200 

142 

48 

152 

166 

146

Fluoride 

(F)

0.2 

.4

Nitrate 

(NO,)

1.3 

1.0

B

ro

(B

0.0

.1

.0

.1

.3

.2

.3

. 

.1

.1

.2

.2
SAN JOAQUIN RIVER BASIN Continued 

DELTA-MENDOTA CANAL NEAR TRACY, CALIF

LOCATION. On left bank 1.1 miles above gaging station near Tracy and 9.2 miles northwest of Tracy, 

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Discharge records for water year October 1956 to September 1957 given in WSP 1515. No app

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Mar. 12............

Sent. 11............

Discharge 

(cfs)

715 

70 

0 

0 

464 

868

2,744 

2,477 

3,117 

3,659 

3,044 

1.374

Silica 

(310.)

16 

16

Iron 

(Fe)

0.03 

.05

Calcium 

(Ca)

34 

36 

27 

34 

39 

37

26 

27 

21

19

Magnesium 

(Mg)

13 

18 

15 

14 

19 

16

12 

11 

6.9

11

Sodium 

(Na)

65 

85 

55 

73 

91 

77

38 

43 

32 

18 

82 

45

Potassium 

(K)

3.1 

3.4 

2. 8 

2.3 

3.0 

3.5

2.3 

2.4 

2 2

2.9

Bicarbonate 

(HCO,)

131 

130 

102 

115 

135 

119

81 

92 

80 

67 

147 

92

Carbonate 

(CO,)

Sulfate 

(S0«)

36 

26

Chloride 

(Cl)

97 

124 

88 

112 

134 

115

60 

68 

46 

22 

134 

68

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

1.1 

1.7

0
SAN JOAQUIN RIVER BASIN Continued 

DELTA-MENDOTA CANAL AT TRACY PUMPING PLANT, CAL

LOCATION. At outlet of siphon into canal, 1 mile south of Tracy Pumping Plant, Alameda County, 7 m

Tracy, San Joaquin County. 

RECORDS AVAILABLE.--Chemical analyses: July 1955 to September 1957.

Water temperatures: July 1955 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 571 ppm Mar. 1-7; minimum, 100 ppm June 7-14.

Hardness: Maximum, 234 ppm Mar. 1-7; minimum, 42 ppm June 7-14.

Specific conductance: Maximum daily, 1,000 micromhos Mar. 1; minimum daily, 128 micromhos June 

Water temperatures: Maximum, 81°F June 25. 

EXTREMES, 1955-57. Dissolved solids: Maximum, 571 ppm Mar. 1-7, 1957; minimum, 86 ppm June 1-9, 

Hardness: Maximum, 234 ppm Mar. 1-7, 1957; minimum, 34 ppm June 1-9, 1956.

Specific conductance: Maximum daily, 1,110 micromhos Oct. 19, 22, 1955; minimum daily, 112 micro

Water temperatures: Maximum, 81°F June 25, 1957.

REMARKS. Records of specific conductance of daily samples available in district office at Sacramen

since pumping plant is not in operation during the winter months. Records of discharge for Delt

1956 to September 1957 given in WSP 1515.

Chemical analyses, In parts per million, water year October 1956 to 

Date of collection

Oct. 1-10, 1956... 

Oct. 11-22. .......

Oct. 23-31........

Nov. 1-5 .........

Nov. 14-18 .......

Jan. 1-12, 1957... 

Jan. 13-31 .......

Feb. 1-15 ........

Feb. 16-28 .......

Mar. 1-7.........

Mar. 8-17........

Mar. 31..........

Apr. 1-8 .........

Apr. 9-19 ........

Aor. 25-30 .......

Mean 

discharge 

(cfs)

1,020 

782 

87.0 

42.2 

35.4

70.6 

93.8 

56.8 

53.2 

16.8

1,122 

867 

2,501 

927 

1,946

2,352 

2,562 

2,673 

1,474 

1.896

Silica 

(SiO,)

25 

28 

24

27 

22

27 

27 

28 

24 

18

25 

22 

25 

23

Iron 

(Fe)

0.01 

.02 

.03

.01

.01 

.00 

.00 

.02 

.01

.00 

.02 

.00 

.04

Calcium 

(Ca)

36 

35 

33 

34 

34

38 

34 

28 

32 

36

41 

41 

51 

36 

25

35 

42 

29 

42 

27

Magnesium 

(Mg)

13 

14 

13 

16 

20

19 

14 

14 

14 

17

20 

20 

26 

18 

12

19 

18 

13 

18 

14

Sodium 

(Na)

70 

68 

66 

71 

84

82 

70 

62 

70 

88

93 

93 

97 

73 

46

68 

72 

44 

75 

44

Potassium 

(K)

3.2 

3.7 

3.5

3.9 

2.5 

2.9 

2.6 

2.8

3.6 

3.4 

3.6 

3.4 

2.1

2.8 

2.4 

2.3 

2.8 

2.9

Bicarbonate 

(HCO,)

134 

134 

127 

142 

143

136 

116 

103 

113 

123

134 

136 

136 

123 

89

106 

104 

83 

125 

87

Sulfate 

(SO.)

38 

36 

38

60 

57 

49 

56 

65

83 

80 

102 

63 

40

73 

88 

55 

60 

52

Chlorids 

(Cl)

102 

102 

98

109 

94

138 

139 

154 

111 

70

112 

70 

129 

66

Fluoride 

(F)

0.2 

.2 

.3

.0 

.0

.0 

.0 

.3 

.3 

.2

.4 

.4 

.4 

.3

Nitrate 

(NO,)

2.1 

2.6 

1.7

3 3 

3.2

4.3 

3.5 

5.7 

3.3 

1.9

3.7 

1.9 

1.6 

2.7

Boron 

(B)

0.23 

.20 

.32

.30 

.37 

.37 

.36 

.47

.47 

.42 

.35 

.31 

. 18

.26 

.40 

.27 

.32 

.20
May 1-19, 1957 ...

May 23 -31 ........

Aug. 1-16 ........

Aug. 29 -Sept. 2...

Sept. 20-30..... ..

Weighted average 3

2,358

1,779

3,384

3,285

2,363

1,976

1,632

19

21

18

18

19

16

18

18

19

17

23

b20

.07

.03

.02

.05

.03

.19

.02

bO. 04

22

17

18

17

32

30

24

10

6.2

6.6

8.0

7.1

13

16

17

12

31

27

66

69

44

2.6

2.5

2.5

2.6

2.6

3.7

4.0

b2.7

80

71

73

76

64

85

122

137

92

26

16

34

36

b34

48

37

42

21

44

59

111

102

b68

.2

.2

.2

.0

.1

.1

.2

.2

.3

bO.2

1.6

1.9

2.1

1.6

1.4

2.6

1.1

b2.0

.0

.1

.0

.0

2

.2

bO. 1

a Represents 100 percent of runoff for water year October 1956 to September 1957. 

b Includes estimated for missing data.
282 PACIFIC SLOPE BASINS IN CALIFORNIA

SAN JOAQUIN RIVER BASIN Continued

DELTA-MENDOTA CANAL AT TRACY PUMPING PLANT, CALIF.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement, generally between 2 a. m. and 1 p. m.J

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

Average

Oct.

73

72

71

70

71

70

70

70

70

69

68

68

67

67

67

67

66

66

66

65

65

65

_

--

62

59

--

--

Nov.

_

58

_.

_

--

_

_.

_

62

..

-.

..

--

56

_

--

53

__

_.

50

-.

-.

--

--

Dec.

_

__

_

_

--

._

51

_

._

..

52

_

--

..

_

_.

_

48

_.

--

..

_

_

_

--

Jan.

__

_.

_

_.

45

_

_

_

--

..

_

_.

_.

..

__

__

__

50

__

_

_

--

..

..

_

_.

_

--

Feb.

47

_

_

._

--

..

..

57

50

49

52

_

_

--

57

58

59

56

58

59

57

57

57

60

58

58

60

_

--

Mar.

62

59

56

56

58

58

59

62

60

60

59

60

60

60

60

59

59

58

58

60

59

59

57

57

57

58

60

60

62

_

64

59

Apr.

63

62

63

64

64

65

64

65

64

63

63

64

64

64

64

63

64

63

64

62

63

62

61

62

62

63

65

66

67

67

64

May

67

66

68

68

68

68

69

69

68

67

69

69

69

69

68

70

69

67

69

67

66

65

64

64

64

67

70

70

69

69

70

68

June

70

70

71

72

71

70

70

68

68

69

69

68

69

69

70

70

71

72

73

72

73

75

80

77

81

78

78

78

79

78

--

73

July

78

77

77

77

77

77

77

77

78

77

77

77

77

77

77

77

77

77

75

76

70

75

75

76

75

75

76

76

76

76

76

76

Aug.

76

78

78

76

74

73

74

74

74

76

76

76

76

76

75

75

75

76

75

75

75

75

75

76

75

75

75

74

70

70

70

75

Sept.

71

73

74

74

74

74

75

76

76

75

74

74

73

73

73

71

71

71

71

72

71

72

72

74

71

71

72

73

_

71

--

73
SAN JOAQUIN RIVER BASIN Continued 

DELTA-MENDOTA CANAL NEAR MENDOTA, CALIF

LOCATION. One mile upstream from control gates into Mendota Pool and 2 miles north of Mendota, Fr

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 8, 1956 .....

Mean 

discharge 

(cfs)

Silica 

(SiO.)

18 

18

Iron 

(Fe)

0.19 

.14

Calcium 

(Ca)

32 

30 

30 

34 

42 

36

42 

22 

13

21

Magnesium 

(Mg)

13 

13 

15 

15 

19 

16

21 

9.0 

4.1

10

Sodium 

(Na)

64 

65 

65 

73 

95 

76

75 

30 

20 

34 

35 

44

Potassium 

(K)

3.0 

3.3 

3.0 

2.7 

3.4 

3.6

3.1 

2.0 

2.2

2.9

Bicarbonate 

(HCO,)

126 

117 

124 

129 

135 

117

105 

75 

49 

79 

78 

93

Sulfate 

(SOJ

36 

32

Chloride 

(Cl)

93 

91 

91 

91 

136 

110

115 

42 

24 

46 

47 

63

Fluoride 

(F)

0.4 

.0

Nitrate 

(NO,)

1.3 

2.0

Boron 

(B)

0.20 

.21 

.19 

.34 

.24 

.24

.28 

.14 

.01 

.06 

.12 

.09
SAN JOAQUIN RIVER BASIN Continued 

OLD RIVER AT CLIFTON COURT FERRY, CALIF.

LOCATION. At Clifton Court Ferry Crossing, 0.3 mile below tidal gaging station, 2.1 miles east of 

County.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Tidal gaging station maintained and operated by U. S. Bureau of Reclamation. No dischar

effects from Suisun Bay.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 16, 1956 ....

Jan. 15, 1957 ....

Sept. 11..........

Mean 

discharge 

(cfs)

Silica 

(SiO,)

26 

23 

19 

16 

25 

24

21 

27

Iron 

(Fe)

0.00 

.03 

.03 

.00 

.02 

.03

.12 

.00

Calcium 

(Ca)

32 

30 

25 

33 

40 

36

28 

21 

20

34

Magnesium 

(Mg)

14 

15 

12 

15 

19 

18

13 

8.4 

8. 3

17

Sodium 

(Na)

65 

67 

48 

70 

96 

77

42 

26 

31 

18 

42 

73

Potassium 

(K)

3.2 

2.6 

2.0 

2.7 

2.8 

3.5

2.3 

1.9 

2.2

4.2

Bicarbonate 

(HCO,)

130 

115 

92 

118 

133 

119

85 

73 

73 

67 

80 

133

Sulfate 

(SO,)

31 

44 

35 

52 

77 

67

29 

36

Chloride 

(Cl)

100 

100 

75 

108 

137 

111

68 

41 

47 

23 

63 

116

Fluoride 

<F)

0.1 

.2 

.1 

.1 

.2 

.3

.2 

.4

Nitrate 

(NO,)

2.3 

2.3 

2.4 

3.3 

3.1 

3.6

1.4 

1.3

Boron 

(B)

0.17 

.27 

.06 

.25 

.31 

.21

.11 

,07 

.14 

.00 

.06 

.22
SAN JOAQUIN RIVER BASIN Continued 

ITALIAN SLOUGH AT MOUTH, NEAR BYRON, CALIF

LOCATION. On right bank at confluence of Italian Slough and Old River, 3.6 miles east of Byron, Co

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 16, 1956 ...

Jan. 15, 1957 ...

Mean 

discharge 

(els)

Silica 

(810.)

22 

20

Iron 

(Fe)

0.13 

.02

Calcium 

(Ca)

34 

36 

35 

42 

42 

39

26 

20 

19

18

Magnesium 

(Mg)

13 

16 

15 

16 

21 

16

13 

9.4 

7.7

11

Sodium 

(Na)

64 

73 

60 

74 

96 

79

40 

26 

30 

18 

46 

44

Potassium 

(K)

2.9 

3,0 

2.4 

2.9 

2.8 

3.4

2.1 

1.9 

2.2

2~8

Bicarbonate 

(HCO.)

122 

106 

77 

107 

126 

116

79 

71 

68 

67 

81 

84

Sulfate 

(SO,)

30 

26

Chloride 

(CD

100 

113 

92 

116 

140 

119

64 

41 

44 

22 

74 

62

Fluoride 

(F)

0.2 

.4

Nitrate 

(NO,)

1.8 

1.4

Boron 

(B)

0.17 

.25 

.22 

.30 

.39 

.29

.17 

.09 

.30 

.00 

.13 

.19
SAN JOAQUIN RIVER BASIN Continued 

INDIAN SLOUGH NEAR BRENTWOOD, CALIF.

LOCATION. At East Contra Costa Irrigation District pumping station on Bixler Road, 3.6 miles (revise

Contra Costa County.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, In parts per million, water year October 1956 to 

Date of collection

Sect. 11 ............

Discharge 

(cfs)

Silica 

(810.)

19 

19

Iron 

(Fe)

0.17 

.04

Calcium 

(Ca)

38 

78 

65 

54 

49 

74

24 

22 

20

19

Magnesium 

(Mg)

22 

41 

49 

30 

29 

44

13 

9.7 

8.5

12

So- 

(Hum 

(Na)

99 

130 

123 

122 

130 

171

35 

33 

34 

24 

59 

56

Potassium 

(K)

2.4 

2.4 

1.8 

2.4 

2.6 

3.6

2.1 

1.8 

2.0

3.2

Bicarbonate 

(HCO.)

170 

330 

295 

240 

177 

274

82 

82 

76 

77 

97 

95

Carbonate 

(CO,)

Sulfate 

(S04)

36 

26

Chloride 

(Cl)

136 

177 

158 

145 

174 

242

55 

46 

48 

30 

88 

82

Fluoride 

(F)

0.2 

.5

Nitrate 

(NO,)

1.4

.8

B

ro

(B

1.

2.

1.

1.

1.

2.

.

.

.

.

.

.
SAN JOAQUIN RIVER BASIN Continued 

OLD RIVER AT ORWOOD BRIDGE, NEAR MIDDLE RIV

LOCATION. At right bank of Atchison, Topeka and Santa Fe Railroad bridge, 1.6 miles west of the 

7.9 miles east of Brentwood.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 16, 1956 ....

Jan. 15, 1957 ....

Sept. 12 .........

Mean 

discharge 

(cfs)

Silica 

(SiOa)

18 

24 

20 

17 

23 

28

17 

14

20

Iron 

(Fe)

0.02 

.03

.04 

.04 

.04

.14 

.04

Calcium 

(Ca)

26 

31 

28 

53 

50 

51

22 

18 

19

15

Magnesium 

(Mg)

13 

16 

13 

23 

23 

27

10 

9.2 

8.1

12

Sodium 

(Na)

52 

66 

49 

74 

85 

88

29 

25 

28 

17 

46 

44

Potassium 

(K)

2.7 

2.7 

2.1 

2. 8 

2.9 

3.5

2.0 

2.0 

2.0

2.8

Bicarbonate 

(HCO,)

111 

114 

84 

86 

113 

115

76 

72 

75 

67 

80 

84

Sulfate 

(SO,)

27 

22 

50 

132 

109 

127

25 

19

Chloride 

(Cl)

77 

116 

80 

118 

130 

132

44 

38 

43 

20 

69 

60

Fluoride 

(F)

0.3 

.3 

.1 

.3 

.4 

.3

.2

.3

Nitrate 

(NO,)

1.0 

2.1 

3.7 

13 

7.6 

8.3

.9 

1.0

Boron 

(B)

0.09 

.25 

.17 

.28 

.21 

.23

.10 

.14 

.00 

.00 

.12 

.13
SAN JOAQUIN RIVER BASIN Continued 

ROCK SLOUGH NEAR KNIGHTSEN, CALIF.

LOCATION. At Contra Costa Canal intake at the end of Tule Lane, 2 miles northeast of Knightsen, 

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, In parts per million, water year October 195

Date of collection

Oct. 16, 1956 ....

Jan. 16, 1957 ....

Sept. 12 .........

Mean 

discharge 

(cfs)

Silica 

(SiO,)

18 

20

Iron 

(Fe)

0.13 

.03

Calcium 

<Ca)

21 

34 

28

53 

44 

52

24 

17 

20

16

Magnesium 

(Mg)

9.6 

17 

8.3 

24 

23 

29

12 

8.1 

8.5

11

Sodium 

(Na)

36 

72 

54 

76 

85 

99

35 

24 

31 

18

55 

46

Potassium 

(K)

2.1 

3.4 

2.1 

2.9 

2.8 

3.2

2.2

1.7 

2.5

3.0

Bicarbonate 

(HCO,)

96 

128 

94 

92 

114 

116

91 

74 

80 

72 

83 

85

Sulfate 

(SOJ

27 

22

Chlorids 

(Cl)

51 

109 

80 

107 

120 

144

52 

30 

44 

21 

84 

66

Fluoride 

(F)

0.1 

.3

Nitrate 

(NO,)

1.0

.5

Boron 

(B)

0.18 

.19 

.18 

.41 

.33 

.30

.17 

.08 

.19 

.00 

.11 

.12
SAN JOAQUIN RIVER BASIN Continued 

OLD RIVER AT MANDEVILLE ISLAND, CALIF.

LOCATION. At right bank on northwest side of Mandeville Island, San Joaquin County, about 0.5 mil

approximately 5.5 miles southwest of Terminous.

RECORDS AVAILABLE.--Chemical analyses: December 1954 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 17, 1956.....

Jan. 15, 1957.....

Mar 12

Aug. 20..........

Sept. 11 .........

Mean 

discharge 

(cfs)

Silica 

(SiO.)

16 

17 

21 

14 

21 

22

18 

22

Iron 

(Fe)

0.03 

.05

.04 

.05 

.07

.15 

.05

Calcium 

(Ca)

18 

20 

23 

31 

35 

32

14 

14 

14

14

Magnesium 

(Mg)

9.0 

10 

11 

14 

18 

17

6.8 

5.8 

6.6

11

Sodium 

(Na)

28 

34 

36 

42 

46 

46

13 

13 

18 

19 

46 

44

Potassium 

(K)

1.9 

2.3 

2.0 

2.2 

2.1 

2.3

1.2 

1.3 

1.5

2.7

Bicarbonate 

(HCO,)

94 

91 

96 

78 

86 

83

66 

63 

63 

70 

81 

84

Sulfate 

(SO,)

17 

17 

31 

65 

68 

61

12 

18

Chloride 

(Cl)

37 

50 

55 

66 

74 

76

17 

17 

26 

25 

70 

60

Fluoride 

(F)

0.2 

.3 

.1 

.3 

.4 

.3

.2 

.4

Nitrate 

(NO,)

0.7 

1.4 

2.5 

7.6 

7.6 

8.1

.8 

.6

Boron 

(B)

0.10 

.18 

.17 

.18 

.17 

.07

.05 

.09 

.14 

.00 

.21 

.12
SAN JOAQUIN RIVER BASIN Continued 

MOKELUMNE RIVER AT LANCHA PLANA, CALIF.

LOCATION. On left bank 500 feet below gaging station, 1 mile east of Lancha Plana, Amador County, 

upstream from Camanche Creek. 

DRAINAGE AREA.--5S4 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 18, 1956.....

Jan. 14, 1957.....

Aug. 19..........

Sept. 13 .........

Discharge 

(cfs)

715 

715 

710 

628 

59 

710

694 

694 

710 

704 

699 

688

Silica 

(SiO,)

11 

13

Iron 

(Fe)

0.05 

.05

Calcium 

(Ca)

3.7 

3 3 

3! 6 

3.8 

4.4 

4.2

4.8 

5.5 

4.8

3.6

Magnesium 

(Mg)

0.3 

.9 

2.7 

.7 

1.1 

1.8

1.0 

.6 

1.0

.2

Sodium 

(Na)

1.5 

1.5 

1.5 

2.0 

2.2 

2.1

2.3 

2.1 

2.1 

2.0 

1.9 

2.0

Potassium 

(K)

0.6 

.7 

.7 

.6 

.7 

.6

.8 

.7

.5

1.0

Bicarbonate 

(HCOS)

16 

16 

16 

16 

17 

16

22 

21 

20 

16 

12 

14

Sulfate 

(SO,)

1.9 

1.9

Chloride 

(Cl)

0.3 

1.2 

.0 

1.3 

1.5 

2.5

1.4 

2.0 

.5 

1.0 

2.0 

2.6

Fluoride 

(F)

0.0 

.0

Nitrate 

(NO,)

0.0 

.2

Boron 

(B)

0.13 

.03 

.12 

.00 

.04 

.15

.00 

.02 

.00 

.04 

.00 

.00
SAN JOAQUIN RIVER BASIN Continued 

MOKELUMNE RIVER AT WOODBRIDGE, CALIF.

LOCATION. At dam of Woodbridge Irrigation District, San Joaquin County, 0.4 mile upstream from g

DRAINAGE AREA. 644 square miles (above gaging station).

RECORDS AVAILABLE.--Chemical analyses: March 1951 to September 1957.

Water temperatures: March 1951 to September-1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 52 ppm Mar. 1-6; minimum, 22 ppm July 11-20.

Hardness: Maximum, 32 ppm Jan. 28; minimum, 12 ppm July 21-31.

Specific conductance: Maximum daily, 71.2 micromhos Jan. 28; minimum daily, 35.4 micromhos Dec

Water temperatures: Maximum, 75°F Oct. 19; minimum, 40°F Jan. 25-27, Feb. 13. 

EXTREMES, 1951-57. Dissolved solids: Maximum, 71 ppm Jan. 16, 1956; minimum, 22 ppm July 11-20, 

Hardness: Maximum, 34 ppm Feb. 1, 3, 5, Mar. 3, 1953; minimum, 11 ppm May 18-25, 27-31, 1956.

Specific conductance: Maximum daily, 202 micromhos Dec. 15, 1952; minimum daily, 29.4 micromho

Water temperatures: Maximum (1951-54, 1957), 83°F July 17, 1951; minimum, 35°F Jan. 29-30, 195

REMARKS. Records of specific conductance of daily samples available in district office at Sacram

October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 15, 1956..... 

Oct. 16-30. .......

Jan. 1-10, 1957...

Jan. 21-27, 29-31.

Feb. 1-10 ........

Feb. 11-20 .......

Feb. 21-28 .......

Mar. 19-31.......

Apr. 21-30 .......

May 21-31........

June 1-12. ........

Mean 

discharge 

(cfs)

334 

415 

685 

357 

312

306 

290 

137 

94.6 

159

886 

1,136 

608 

456 

490

450 

385 

418 

614 

2.450

Silica 

(Si02)

Iron 

(Fe)

0.02

Calcium 

(Ca)

4.0 

3.8 

4.0 

4.8 

3.6

4.4 

5.6 

5.6 

5.6 

5.6

6.4 

4.8 

4.8 

5.3 

5.9

6.0 

5.7 

5.6 

5.8 

4.4

Magnesium 

(Mg)

0.9 

.9 

.7 

.5 

1.5

1.2 

4.4 

1.7 

1.2 

1.7

1.7 

1.7 

1.0 

.7 

.4

.5 

.7 

.7 

.9 

1.7

Sodium 

(Na)

1.9 

2.5 

1.9 

2 3 

2.3

2.2 

3.2 

2.9 

3.1 

2.8

3 2 

2.2 

2.1 

2.3 

2.4

2.4 

2.6 

2.4 

2.4 

3.2

Potassium 

(K)

Bicarbonate 

(HCO,)

23 

23 

17 

16 

17

18 

30 

22 

20 

21

20 

17 

18 

20 

16

20 

21 

20 

23 

20

Sulfate 

(SO,)

Chlorids 

(CD

Fluoride 

(F)

Nitrate 

(NO,)

Boron 

(B)
SAN JOAQUIN RIVER BASIN Continued

MOKELUMNE RIVER AT WOODBRIDGE, CALIF. Contin

Chemical analyses, in parts per million, water year October 1956 to Septem

Date of collection

June 13-23, 1957..

July 11-20........

July 21-31. .......

Sept. 9-20........

Weighted average a

Weighted average b

Mean 

discharge 

(els)

1,030 

398 

103 

90.2 

98.5

97.7 

156 

172 

161 

206 

289

469

492

Silica 

(S10,)

Iron 

(Fe)

Calcium 

(Ca)

4.4 

4.4 

4.0 

4.0 

4.2

4.2 

5.0 

4.4 

7.4 

2.4 

4.0

4.7

4.6

Magnesium 

(Mg)

1.7 

.7 

1.0 

.7 

.5

1.1 

1.1 

1.5 

1.3 

1.9 

1.2

1.2

1.1

Sodium 

(Na)

2.8 

2.4 

2.6 

2.4 

2.3

2.4 

2.4 

2.2 

2.1 

2.6 

2.5

2.5

2.5

Potassium 

(K)

Bicarbonate 

(HCO.)

20 

18 

16 

18 

16

20 

24 

22 

24 

16 

18

19

19

Sulfate 

(S0«)

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Boron 

(B)

a Represents 84 percent of runoff for water year October 1956 to September 1957.

b Includes estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 195
SAN JOAQUIN RIVER BASIN

SAN JOAQUIN RIVER BASIN Continued

MOKELUMNE RIVER AT WOOEBHIDGE, CALIF.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 6:30 a. m. 7

293

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

Average

Oct.

68

67

67

67

67

60

66

66

66

65

65

65

65

64

64

65

66

65

75

65

66

64

63

64

64

63

63

65

64

62

--

65

Nov. Dec.

..

_

_

--

..

_

_

_

--

_

50

48

49

49

55

55

50

50

--

46

46

45

45

47

47

48

48

46

46

--

--

Jan.

48

47

48

47

48

48

49

48

48

48

49

49

49

50

50

47

47

46

48

49

43

48

49

49

40

40

40

41

45

44

45

47

Feb.

45

46

46

47

48

47

45

45

46

47

47

48

40

48

49

49

48

47

47

50

50

50

50

50

51

51

56

56

_

--

48

Mar.

55

55

54

53

54

55

50

51

50

50

50

50

51

50

50

50

51

51

50

50

51

51

53

52

52

54

55

55

56

56

55

52

Apr.

51

51

53

54

55

55

54

54

54

53

58

58

59

55

55

55

56

55

53

53

52

53

55

55

58

58

59

59

60

60

--

55

May

58

58

59

59

61

62

63

67

65

63

61

60

60

61

61

64

60

59

55

56

56

57

60

61

63

63

61

60

58

55

55

60

June

56

56

56

56

58

60

60

60

60

61

61

65

65

66

66

66

67

67

68

69

67

68

69

68

68

69

69

69

70

69

--

64

July

70

70

69

69

70

70

70

70

70

71

70

69

69

70

69

68

68

69

69

69

70

68

67

69

69

69

70

70

69

69

69

69

Aug.

69

70

70

70

68

68

68

67

68

69

69

69

69

69

69

70

69

69

68

68

69

69

70

70

69

69

63

64

64

64

65

68

Sept.

65

66

68

67

67

67

66

66

65

65

66

66

65

65

65

65

65

64

64

63

66

65

65

65

64

64

64

64

64

64

--

65
SAN JOAQUIN RIVER BASIN Continued 

COSUMNES RIVER AT MICHIGAN BAR, CALIF.

LOCATION. At gaging station on highway bridge at Michigan Bar, Sacrsmento County, 5.5 miles south

of North and Middle Forks. 

DRAINAGE AREA. 537 square miles.

RECORDS AVAILABLE. Chemical analyses: January 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 18, 1956 ....

Jan. 14, 1957 ....

Aug. 19 .........

Sent. 13 .........

Discharge 

(cfs)

31 

52 

70 

402 

258 

1,470

780 

407 

173 

45 

16 

13

Silica 

(SiO.)

18

17

Iron 

(Fe)

0.03

.00

Calcium 

(Ca)

8.0 

8.0 

8.2 

10 

8.4 

6.4

7.6 

6.0 

6.4

9.6

Magnesium 

(Mg)

3.2 

2.6 

2.6 

4.6 

4.1 

2.4

2.7 

1.5 

1.9

3.8

Sodium 

(Na)

3.8 

3.6 

3.5 

4.3 

3.9 

2.7

3.1 

2.6 

2.9 

3 5

4.4

5.1

Potassium 

(K)

1.2 

1.4 

1.4 

1.1 

1.0 

.8

.9 

.8 

1.1

1.8

Bicarbonate 

(HCO,)

48 

44 

42 

52 

41 

32

39 

28 

31 

38 

44 

55

Sulfate 

(SO,)

0.6 

1.9

Chlorlds 

(Cl)

2.4 

1.7 

1.5 

2.5 

1.3 

1.8

1.0 

2.2 

.5 

.3 

2.0 

3.0

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

0.2 

1.2

Boron 

(B)

0.00 

.00 

.02 

.00 

.02 

.00

.01 

.02 

.03 

.00 

.00 

.00
SAN JOAQUIN RIVER BASIN Continued 

DELTA CROSS-CHANNEL NEAR WALNUT GROVE, CALIF

LOCATION. At left bank 0.2 mile downstream from control gates, 0.5 mile north of Walnut Grove, Sacra

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Jan. 11, 1957. .......

Apr. 12.............

Sept. 12. ............

Discharge

(cfs)

Silica 

(SiO.)

19 

24

Iron 

(Fe)

0.02 

.01

Calcium 

(Ca)

12 

M 

13 

14 

14 

11

13 

12 

11

14

Magnesium 

(Mg)

6.5 

6.0 

6.2 

7.3 

7.3 

4.5

4.7 

4.1 

4.5

8.0

Sodlum 

(Na)

8.9 

8.3 

9.2 

12 

12 

6.3

6.6 

8.7 

7.9 

13 

13 

16

Potassium 

(K)

1.4 

1.5 

1.5 

1.3 

1.3 

1.0

1.0 

1.1 

.9

1.8

Bicarbonate 

(HCOS)

77 

70 

80 

90 

84 

59

64 

62 

61 

79 

80 

94

Carbonate 

(CO,)

Sulfate 

(80,)

8.1 

11

Chloride 

(CD

6.3

5.0 

7.0 

7.4 

5.2

4.5 

5.9 

5.0 

8.7

11

Fluoride 

(F)

--

0.1

.1

Nitrate 

(NO,)

--

0.7

1.1

B

ro

(B

0
SAN JOAQUIN RIVER BASIN Continued 

LITTLE POTATO SLOUGH NEAR TERMINOUS, CAL

LOCATION. At tidal gaging station at bridge on State Highway 12, about 0.2 mile from conflue

north of Terminous, San Joaquin County.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS.--Tidal gaging station maintained and operated by State of California Department of W

this station due to tidal effects from Suisun Bay.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 15, 1956 ....

Jan. 11, 1957 ....

MELV 7

Sept. 10 .........

Mean 

discharge 

(cfs)

Silica 

(SiO,)

20 

17 

15 

16 

20 

18

18 

19

Iron 

(Fe)

0.02 

.08 

.15 

.03 

.00 

.14

.02 

.01

Calcium 

(Ca)

15 

12 

12 

16 

20 

14

12 

13 

7,6

14

Magnesium 

(Mg)

8.4 

6.3 

7.5 

8.4 

11 

8.0

3.9 

5.6 

3.4

8.0

Sodium 

(Na)

15 

10 

13 

17 

20 

12

7.2 

10 

6.2 

19 

18 

16

Potassium 

(K)

1.5 

1.3 

1.0 

1.3 

1.4 

1.3

1.1 

1.2 

.9

2.0

Bicarbonate 

(HCO,)

77 

58 

52 

62 

74 

53

51 

58 

34 

83 

93 

83

SuUate 

(SO,)

6.7 

6.7 

5.8 

11 

13 

9.6

5.8 

8.6

Chloride 

(Cl)

26 

16 

28 

32 

42 

26

11 

18 

11 

32 

22 

20

Fluoride 

(F)

0.0 

.2 

.2 

.2 

.2 

.3

.1 

.0

Nitrate 

(NO,)

1.0 

1.1 

2.2 

6.5 

2.3 

2.9

.7 

1.6

Boron 

(B)

0.10 

.12 

.02 

.12 

.02 

.00

.00 

.00 

.08 

.00 

.08 

.02
SAN JOAQUIN RIVER BASIN Continued 

SAN JOAQUIN RIVER AT ANTIOCH, CALIF

LOCATION. At tidal gaging station at Antioch, Contra Costa County, and 4.5 miles from mouth. 

RECORDS AVAILABLE. Chemical analyses: October 1952 to September 1957.

REMARKS. Tidal gaging station maintained and operated by State of California Department of Wat

due to tidal effects from Suisun Bay.

Chemical analyses, in parts per million, water year October 19

Date of collection

Oct. 16, 1956.....

Jan. 16, 1957 ....

Apr. 17..........

Sept. 12 .........

Mean 

discharge 

(cfs)

Silica 

(810,)

18 

19 

18 

19 

21 

20

17 

13

Iron 

(Fe)

0.01 

.16 

.14 

.13 

.09 

.11

.04 

.04

Calcium 

(Ca)

16 

16 

19 

20 

26 

17

17 

14 

12

29

Magnesium 

(Mg)

12 

9.5 

15 

13 

24 

8.4

12 

7.3

5.4

49

Sodium 

(Na)

51 

38 

74 

57 

133 

19

52 

26 

13 

506 

422 

364

Potassium 

(K)

2.9 

2.5 

3.7 

3.1 

5.8 

1.5

2.8 

1.6 

1.4

17

Bicarbonate 

(HCO,)

89 

79 

86 

81 

84 

64

71 

65 

62 

69 

81 

85

Sulfate 

(SOJ

15 

16 

28 

27 

54 

23

14 

97

Chloride 

(Cl)

81 

58 

125 

93 

236 

28

87 

39 

15 

880 

760 

670

Fluoride 

(F)

0.1 

.3 

.2 

.1 

.3 

.2

.1 

.1

Nitrate 

(NO,)

0.9 

1.0 

1.6 

2.3 

2.4 

2.3

.1 

6.3

B

ro

(B

0

MISCELLANEOUS ANALYSES OF STREAMS IN SAN JOAQUIN RIVER BA

Date of collection

Mean 

discharge 

(cfs)

Silica 

(810,)

Iron 

(Fe)

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium 

(Na)

Potassium 

(K)

Bicarbonate 

(HCO,)

Sulfate 

<SO«)

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Bo

ron 

(B)

DEL PUERTO CREEK NEAR GRAYSON (SEC. 31, T. 4 S., 

Mar. 21, 1957 ...

Sept. 29.........

4.7 

25

17

0.00 17 

36

35

108 

19

23

103 

88

100

3.2 

5.0

5.4

a 541 

138

148

158 

73

79

55 

123

130

0.2 

.2

.4

0.5 

1.7

6.3

1.5 

.

.

a Includes equivalent of 35 parts per million of carbonate (CO,).
298 PACIFIC SLOPE BASINS IN CALIFORNIA 

SAN JOAQUIN RIVER BASIN--Continued

MISCELLANEOUS ANALYSES OF STREAMS IN SAN JOAQUIN RIVER BASIN IN CALIFORNIA Continued 

Periodic determinations of suspended-sediment discharge, water year October 1956 to September 1957

Date Time

Water 

temperature (°D

Discharge 

(cfs)

Suspended sediment

Mean 

concentration 

(ppm)

Discharge 

(tons per day)

MOKELUMNE RIVER NEAR CLEMENTS

Mar. 6 ..............

44

CO

63

686

2,000

692

10

6

8

4

41

5

2

2

18

11

12

.7

221

9.3

153

1.4

3.5

COSUMNES RIVER AT McCONNELL

Jan. 29 .............

Mar. 6 .............

Apr. 22. .............

May 23. ...... . ....

43

42

58

62

100

124

95

7,460

652

533-

394

157

54

52

745

21

660

550

52

28

34

26

25

17

848

5.4

13,300

92

49

45

11
SAN JOAQUIN RIVER BASIN Continued 

MISCELLANEOUS ANALYSES OF STREAMS IN SAN JOAQUIN RIVER BASIN 

Particle-size analyses of suspended sediment, water year October 195

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; 

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W

Date 

of 

collection

Time

Discharge 

(cfs)

Water 

temperature 

(°F)

Suspended 

Concentration 

of sample 

(ppm)

Concentration 

of suspension 

analyzed 

(PPm)

Percent f

0.002 0.004 0.008 0.016 

COSUMNES RIVER AT McCONNELL

Jan. 14, 1957 .... 

Mar. 6 ..........

2:50 p.m. 

4:00 p.m.

322 

7,610

51 

58

745 

550

3,420 

2.410

33 

13

61 

21
SACRAMENTO RIVER BASIN 

SACRAMENTO RIVER AT DELTA, CALIF.

LOCATION.--On right bank just above gaging station 0.2 mile downstream from Dog Creek, 0.6 mile sou

south of La Moine. 

DRAINAGE AREA.--427 square miles. 

RECORDS AVAILABLE.--Chemical analyses: December 1953 to September 1957.

Water temperatures: June to September 1951, October 1953 to September 1957. '

EXTREMES, 1956-57. Water temperatures: Maximum, 71"F July 26, 28; minimum, 38°F Jan. 28 to Feb. 6

EXTREMES, 1951, 1953-57.---Water temperatures: Maximum, 75'4 F Aug. 20, 1951; minimum, 37*F Feb. 27, 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 15, 1956 ....

Jan. 15, 1957 ....

Sept. 12 .........

Discharge 

(cfs)

250 

276 

286 

1,110 

784 

2,280

1,180 

3,200 

682 

318 

235 

192

Silica 

(SiO,)

17 

34

Iron 

(Fe)

0.03 

.01

Calcium 

(Ca)

8.9 

8.0 

8.3 

6.8 

7.2 

5.0

5.5 

5.1 

6.8

9.5

Magnesium 

(Mg)

7.5 

7.5 

8.4 

5.1 

6.7 

6.4

6.7 

4.9 

8.3

7.5

Sodium 

(Na)

10 

10 

9.6 

5.6 

6.6 

2.7

3.3 

2.4 

4.8 

8.1 

15 

11

Potassium 

(K)

1.2 

1.3 

1.1 

.8 

.6 

.3

.4 

.1 

.6

1.7

Bicarbonate 

(HCO,)

81 

78 

80 

46 

62 

43

50 

41 

61 

71 

82 

80

Sulfate 

(SOJ

1.0 

2.9

Chloride 

(Cl)

7.8 

7.0 

7.1 

4.5 

5.2 

2.0

3.1 

.7 

3.3 

6.2 

8.0 

9.3

Fluoride 

(F)

0.3 

.1

Nitrate 

(NO,)

0.6 

.2

Boron 

(B)

0.21 

.15 

.19 

.02 

.12 

.06

.00 

.00 

.07 

.15 

.16 

.18
SACRAMENTO RIVER BASIN Continued 

SACRAMENTO RIVER AT DELTA, CALIF. Continu

Temperature (°F) ot water, water year October 1956 to Sept

Day

1.... ...............

2. ..................

5. ..................

6. ..................

7. ..................

8...................

9. ..................

10. ..................

13...................

14. ..................

15. ..................

16. ..................

17. ....:.............

18...................

19. ..................

20. ..................

21...................

22. ..................

23. ..................

24. ..................

25...................

26. ..................

27. ..................

28...................

29. ..................

30. ..................

31...................

October

max

61 

61 

61 

61 

61

61 

61 

60 

60 

60

60 

59 

58 

57 

56

56 

56 

56 

56 

56

55 

55 

55 

55 

53 

53 

53 

53 

53 

52 

52

57

min

61 

61 

60 

60 

61

61 

60 

60 

60 

60

59 

58 

57 

56 

56

56 

56 

56 

56 

55

55 

55 

55 

53 

53

53 

53 

53 

52 

52 

52

57

November

max

52 

52 

52 

52 

52

52 

52 

52 

52 

52

52 

52 

52

51 

50

50 

48 

48 

48 

48

46 

46 

46 

46 

46

46 

46 

46 

46 

46

49

min

52 

52 

52 

52 

52

52 

52 

52 

52 

52

52 

52 

51 

50 

50 

48 

48 

48 

48 

46

46 

46 

46 

46 

46

46 

46 

46 

46 

46

49

December

max

46 

46 

46 

46 

46

46 

46 

44 

42 

43

45 

46 

47 

47 

47

46 

46 

46 

46 

46

46 

44

44 

44 

44

44 

43 

44 

44 

43 

44

45

min

46 

46 

46 

46 

46

46 

44 

42 

42 

42

43 

45 

46 

47 

46

46 

46 

46 

46 

46

44 

44 

44 

44 

44

43 

43 

43 

43 

43 

43

45

January

max

44 

44 

44 

44 

43

42 

42 

42 

42 

42

42 

42 

42 

43 

43

43 

43 

43 

42 

42

41 

41 

41 

41 

41

40 

40 

39 

38 

38 

38

42

min

44 

44 

44 

43 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

43 

43 

43 

42 

42 

41

41 

41 

41 

41 

40

40 

39 

38 

38 

38 

38

41

February

max

38 

38 

38 

38 

38

39 

40 

40 

42 

42

42 

42 

43 

43 

44

44 

44 

44 

44 

44

44 

45 

45 

45 

45

46 

46 

46

42

min

38 

38 

38 

38 

38

38 

39 

40 

40 

42

42 

42 

42 

43 

43 

44 

44 

44 

44 

44

44 

44 

45 

45 

45 

45 

46 

46

42

March

max

46 

46 

46 

46 

46

46 

46 

46 

46 

46

46 

46 

46 

46 

46

46 

46 

46 

46 

46

46 

46 

46 

46 

46

47 

47 

47 

47 

47 

47

46

min

46 

46 

46 

46 

46

46 

46 

46 

46 

46

46 

46 

46 

46 

46

4.6 

46 

46 

46 

46

46 

46 

46 

46 

46 

46 

47 

47 

47 

47 

47

46

April

max

47 

47 

47 

47 

49

49 

49 

48 

48 

48

49 

49 

49 

49 

49

48 

48 

48 

48 

48

48 

48 

49 

49 

49

49 

49 

50 

51 

52

49

min

47 

47 

47 

47 

47

49 

48 

48 

48 

48

48 

49 

49 

49 

48

48 

48 

48 

48 

48

48 

48 

48 

49 

49

49 

49 

49 

50 

51

48
SACRAMENTO RIVER BASIN Continued 

PIT RIVER NEAR MONTGOMERY CREEK, CALIF.

LOCATION. At gaging station, 1 mile upstream from Cow Canyon Creek and 3.5 miles west of the town 

DRAINAGE AREA. 5,170 square miles, approximately, excluding Goose Lake basin.

RECORDS AVAILABLE. Water temperatures: June to September 1951, October 1953 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 69°F June 29, 30; minimum, 40°F Feb. 3-5.

EXTREMES, 1951, 1953-57. Water temperatures: Maximum, 80°F July 22, 1951; minimum, 40°F Dec. 27, 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, April to Septemb

Date of collection

Apr. 8, 1957 .....

Sept. 11 .........

Discharge 

(cfs)

4,440 

4,420 

2, 170 

1,900 

4,010 

3,950

Silica 

(SiO.)

31 

37

Iron 

(Fe)

0.03 

.01

Calcium 

(Ca)

12 

13 

12

11

Magnesium 

(Mg)

6.1 

S.4 

2.3

6.4

Sodium 

(Na)

9.3 

9.8 

4.8 

13 

11 

11

Potassium 

(K)

1.9 

1.9 

1.3

2.6

Bicarbonate 

(HCO,)

84 

85 

62 

96 

90 

90

Sulfate 

(SOJ

4.4 

1.9

Chloride 

(Cl)

3.8 

2 3

i!o

3.6 

4.0 

4.8

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

0.4 

.2

Boron 

(B)

0.02 

.00 

.00 

.15 

.01 

.07
SACRAMENTO RIVER BASIN Continued

PIT RIVER NEAR MONTGOMERY CREEK, CALIF. Con

Temperature (°F) of water, water year October 1956 to Septe

Day

2. ..................

5...................

6...................

7. ..................

8. ..................

10...................

16. ..................

20. ..................

23. ..................

24...................

25...................

26. ..................

Z8. ..................

29. ..................

31...................

October

max

59 

58 

58 

58 

58

58 

58 

58 

58 

58

57 

56 

56 

56 

56

55 

55 

54 

54 

54

54 

54 

54 

53 

52 

52 

52 

52 

51 

51 

50

55

min

58 

58 

58 

58 

58

58 

58 

58 

58 

57

56 

56 

55 

56 

55

55 

54 

54 

54 

54

54 

53 

53 

52 

52

52 

52 

51 

51 

50 

50

55

November

max

50 

50 

50 

49 

49

49 

49 

49 

49 

50

50 

50 

50 

50 

49

48 

48 

48 

48 

47

47 

47 

47 

46 

46

46 

46 

45 

45 

45

48

min

50 

50 

49 

49 

49

49 

49 

49 

49 

49

50 

50 

50 

49 

48

48 

48 

48 

47 

47

47 

47 

46 

46 

46

45 

45 

45 

45 

45

48

December

max

45 

45 

45 

45 

45

45 

44 

44 

44 

44

44 

44 

44 

44 

44

44 

44 

44 

44 

44

44 

44 

44 

44 

44

44 

43 

43 

43 

43 

43

44

min

45 

45 

45 

45 

45

44 

44 

43 

43 

43

44 

44 

44 

44 

44

44 

44 

44 

44 

44

44 

44 

44 

44 

43 

43 

43 

43 

43 

43 

43

44

January

max

43 

43 

43 

43 

43

43 

43 

43 

43 

43

42 

43 

44 

44 

44

45 

44 

44 

44 

44

44 

44 

44 

44 

43 

43 

42 

42 

42 

42 

41

43

min

43 

42 

43 

43 

43

42 

43 

43 

42 

42

42 

42 

43 

44 

44

44 

44 

44 

44 

43

43 

43 

43 

43 

43

42 

41 

41 

41 

41 

41

43

February

max

41 

41 

41 

41 

41

41 

42 

42 

42 

42

43 

43 

44 

44 

45

45 

46 

46 

46 

46

45 

45 

46 

46 

46 

46 

47 

47

44

min

41 

41 

40 

40 

40

41 

41 

42 

42 

42

42 

43 

43 

44 

44

45 

45 

46 

46 

45 

45 

45 

45 

45 

45 

46 

46 

47

43

March

max

47 

47

--

min

47 

47

--

April

max

49 

49 

48 

48

49 

49 

49 

49 

50

51 

51 

51 

51 

51

51 

51 

51 

51 

51

52 

52 

52 

52 

53 

54 

55 

56 

56 

56

51

min

48 

48 

48 

48

48 

49 

49 

49 

49

50 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

52 

52 

52 

52

53 

54 

55 

55 

56

51
SACRAMENTO RIVER BASIN Continued 

McCLOUD RIVER ABOVE SHASTA LAKE, CALIF.

-:; gali2g station Just upstream from Shasta Lake, 0.2 mile downstream from Big Collibokk

i AREA. bob square miles. 

RECORDS AVAILABLE. Water temperatures: June to September 1951, October 1953 to September 1957

EXTREMES, 1956-57. Water temperatures: Maximum, 56°F June 24-30, July 1, 2, 5, 6; minimum, 40°F D

EXTREMES, 1951, 1953-57. Water temperatures: Maximum, 58°F June 27-30, July 7-12, 24-26, 1956; mi

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515. 

Chemical analyses, in parts per million, April to September 

Date of collection

Apr. 8, 1957 .....

Discharge 

(cfs)

1,730 

2,160 

1,430 

1,210 

1,120 

1,080

-

Silica 

(SiO,)

26 

41

Iron 

(Fe)

0.01 

.00

Calcium 

(Ca)

11 

10 

13

8.8

Magnesium 

(Mg)

3.2 

2.2

5.1

3.6

Sodium 

(Na)

4.2 

4.1 

9.9 

5.1 

6.0 

5.7

Potassium 

(K)

1.0 

.8 

2.0

1.8

Bicarbonate 

(HCOS )

58 

49 

86 

53 

57 

58

Sulfate 

(SO,)

2.5 

.0

Chloride 

(Cl)

1.2 

.8 

3.0 

1.5 

2.3 

1.6

Fluoride 

(F)

0.0 

.0

Nitrate 

(NO,)

0.2 

.2

Boron 

(B)

0.00 

.00 

.02 

.10 

.00 

.08
SACRAMENTO RIVER BASIN Continued

McCLOUD RIVER ABOVE SHASTA LAKE, CALIF. Contin

Temperature (°f) of water, water year October 1956 to Septem

Day

3...................

4. ..................

5. ..................

6. ..................

7...................

8...................

9. ..................

10. ..................

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

12...................

13. ..................

15...................

16...................

17...................

18. ..................

20. ..................

21...................

22...................

23...................

24...................

25...................

26. ..................

27. ..................

29. ..................

30. ..................

31...................

October

max

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

48 

47 

48

48 

48 

49 

49 

47

47 

47 

48 

47 

47

48 

47 

46 

44 

45 

45

48

min

48 

48 

48 

48 

49 

48 

48 

48 

48 

49

49 

47 

47 

47 

47

47 

47 

48 

. 47 

47

47 

47 

47 

45 

46

47 

46 

44 

44 

44 

44

47

November

max

45 

45 

45 

45 

45

45 

45 

45 

45 

46

46 

46 

45 

45 

43

44 

45 

45 

43 

43

43 

42 

42 

42 

42

42 

42 

41 

41 

41

44

min

44 

45 

44 

45 

45

45 

45 

45 

45 

45

46 

45 

45 

43 

43

43 

44 

43 

43 

42

42 

41 

41 

42 

42

42 

41 

41 

41 

41

43

December

max

41 

41 

41 

42 

42

42 

41 

40 

40 

42

43 

43 

44 

44 

43

42 

42 

42 

42 

42

42 

42 

41 

42 

42

41 

41 

41 

41 

42 

42

43

min

41 

41 

41 

41 

42 

41 

40 

40 

40 

40

42 

43 

43 

43 

42 '

42 

42 

42 

42 

42

42 

41 

41 

41 

41

41 

41 

41 

41 

41 

42

41

January

max

42 

42 

42 

41 

41

41 

43 

43 

43 

41

42 

41 

42 

42 

43

43 

43 

42 

43 

42 

42 

42 

43 

44 

43

43 

41 

41 

41 

41 

41

42

min

42 

42 

41 

41 

40 

41 

41 

43 

41 

41

41 

41 

41 

42 

42

43 

42 

42 

41 

40 

41 

41 

42 

43 

43

41 

40 

40 

41 

41 

41

41

February

max

42 

43 

43 

42 

43

43 

43 

44 

44 

45

45 

45 

46 

46 

46

45 

45 

45 

46 

46

46 

47 

47 

46 

46

47 

46 

47

45

min

41 

42 

42 

42 

42

43 

43 

43 

44 

44

45 

45 

45 

46 

45

45 

45 

45 

45 

46

46 

46 

46 

46 

45

46 

46 

46

44

March

max

47 

47 

47 

47 

48 

48 

49 

49 

49 

49

48 

48

--

min

47 

47 

47 

47 

47 

48 

48 

48 

49 

48

48 

48

--

April

max min
SACRAMENTO RIVER BASIN Continued

SACRAMENTO RIVER AT KESWICK, CALIF.

LOCATION. At gaging station 0.6 mile downstream from Keswick Dam, Shasta County, 0.6 mile upstream 

and 10 miles downstream from Shasta Dam.

DRAINAGE AREA. 6,710 square miles, approximately, excluding Goose Lake basin. 

RECORDS AVAILABLE. Chemical analyses: December 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 15, 1956..... 

Nov. 9 ...........

Jan. 15, 1957 ..... 

Feb. 15 ..........

June 14. ..........

Sept. 10 ..........

Discharge 

(cfs)

7,220 

7,180 

6,200 

3,710 

2,920

3,230 

8,930 

8,550 

9,860 

8,560 

7,290

Silica 

(SiO,)

"-

25 

26

Iron 

(Fe)

--

0.26 

.07

Calcium 

(Ca)

9.6 

9.6 

11 

11 

11 

10

11 

10 

11

10

Magnesium 

(Mg)

3.9 

3.8 

6.0 

5.0 

5.6 

5.4

5.5 

4.0 

5.7

4.1

Sodium 

(Na)

5.0 

5.2 

7.1 

7.8 

8.5 

7.4

7.2 

7.0 

6.5 

6.4 

6.6 

5.3

Potassium 

(K)

1.0 

1.2 

1.6 

1.8 

1.6 

1.4

1.4 

1.3 

1.4

1.5

Bicarbonate 

(HCO,)

59 

60 

74 

51 

74 

67

66 

61 

62 

60 

60 

60

Sulfate 

(SO,)

5.8 

4.8

Chloride 

(Cl)

1.5 

1.2 

1.9 

2.3 

3.3 

2.6

2.8 

2.3 

2.2 

2.3 

2.8 

2.2

Fluoride 

(F)

0.1 

. 1

Nitrate 

(NO,)

0.6 

.2

Boron 

(B)

0.05 

.00 

.06 

.01 

.07 

.11

.00 

.00 

.03 

.04 

.05 

.00

P
SACRAMENTO RIVER BASIN--Continued 

SACRAMENTO RIVER NEAR REDDING, CALIF.

LOCATION. Near gaging station, 2.5 miles south of Redding, Shasta County, and 3.3 miles upstream 

RECORDS AVAILABLE.--Chemical analyses: December 1953 to September 1957.

REMARKS. Gaging station maintained and operated by State of California Department of Water Resour

to September 1957 given in State of California Bulletin No. 23.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 15, 1956.. ...

Jan. 15, 1957.. ...

May 16 ...........

Sept. 10.... ......

Discharge

(cfs)

7,050

3,700 

2,710

2,580 

9, 180 

7,720 

9,500

8,290 

6.810

Silica 

(Si02)

--

--

26

25

Iron 

(Fe)

--

-

0.34

.05

Calcium 

(Ca)

9.5 

9.6 

11 

12 

11 

9.6

11 

10 

10

11

Magnesium 

(Mg)

4.5 

3.7 

5. 5 

4.9 

5.4 

6.1

7. 1 

4.3 

7.1

3.4

Sodium 

(Na)

4.9 

5.4 

7.4 

7.9 

8.6 

7.4

7.3 

6.9 

6.6

6.4 

5.3

Potassium 

(K)

0.9 

1.1 

1.5 

.5 

.5 

.4

.4 

.1 

.4

1.5

Bicarbonate 

(HCO,)

59 

60 

75 

60 

75 

66

66 

61 

61 

62 

59 

60

Sulfate 

(S04 )

6.7 

3. 8

Chloride 

(CD

1.3 

1.2 

2.4 

2.7 

3.5 

3.2

2.6 

.0 

2.5 

2. 1 

1.4 

2.3

Fluoride 

(F)

0.2 

. 1

Nitrate 

(NO,)

0.6 

.2

Boron 

(B)

0.01 

.03 

.07 

.01 

.04 

.06

.06 

.00 

.01 

.04 

.04 

.06
SACRAMENTO RIVER BASIN Continued

COTTONWOOD CREEK NEAR COTTONWOOD, CALIF.

LOCATION. At gaging station, 2 miles east of Cottonwood, Shasta County, and 2.4 miles upstream f

DRAINAGE AREA. 945 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 16, 1956 .....

Dec. 11. ..........

Feb. 14,1957 ..... 

Mar. 13 ..........

Sept. 17 ..........

Discharge 

(cfs)

135 

106 

97 

199 

1,740

456 

559 

372 

133 

72 

80

Silica 

(SiO,)

18 

31

Iron 

(Fe)

0.02 

.01

Calcium 

(Ca)

18 

25 

27 

28 

20

25 

23 

23

17.

Magnesium 

(Mg)

7.6 

13 

13 

13 

10

11 

9.4 

9.4

8.8

Sodium 

(Na)

7.9 

12 

11 

15 

7.9

8.1 

7.9 

6.6 

8.2 

8.7 

8.7

Potassium 

(K)

1.0 

1.0 

.9 

.9 

1.1

.9 

.9 

1.0

1.7

Bicarbonate 

(HCO,)

101 

139 

142 

132 

108

122 

114 

109 

119 

111 

104

Sulfate 

(SO,)

9.6 

5.8

Chloride 

(Cl)

6.9 

15 

16 

22 

4.6

7.3 

7.0 

6.1 

6.1 

5.0 

6.4

Fluoride 

(F)

0.0 

.0

Nitrate 

(NO,)

0.4 

.5

Boron 

(B)

0.01 

.02 

.04 

.05 

.07

.02 

.00 

.14 

.03 

.02 

.00
SACRAMENTO RIVER BASIN Continued 

COTTONWOOD CREEK NEAR COTTONWOOD, CALIF. Continu

Periodic determinations of suspended-sediment discharge, water year October 1

Date

Dec. 11. ............

Mar. 26 ............

May 14 .............

Time

9:15 a.m. 

12:00 m. 

2:40 p. m. 

8:25 a.m. 

3:55 p.m. 

9:35 a. m. 

4:20 p.m. 

1:30 p.m. 

5:30 p.m. 

3:40 p.m. 

7:00 p.m.

Water 

temperature 

('ft

65

48 

34 

57 

52 

59 

54 

64 

77 

78

Discharge 

(cfs)

74 

250 

99 

413 

274 

2,580 

873 

1,940 

962 

400 

82

c

Particle-size analyses of suspended sediment, water year October 1956 to S

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, in 

Date 

of 

collection

Feb. 28, 1957 . . .

Time

9:35 a. m. 

1 :30 p. m.

Discharge 

(cfs)

2,580 

1,940

Water 

temperature 

(°F)

52 

54

Suspended sedim

Concentration 

of sample 

(ppm)

468 

782

Concentration 

of suspension 

analyzed 

(ppm)

1,840 

2,290

Percent finer 

0.002 0.004

24 

41

0.008 0.016

41 

62

0
SACRAMENTO RIVER BASIN Continued

SACRAMENTO RIVER AT BEND, CALIF.

LOCATION. At highway bridge at Bend about 7.9 miles upstream from gaging station near Red Bluff, 

north of Red Bluff, Tehama County.

DRAINAGE AREA. 9,300 square miles, approximately, excluding Goose Lake basin(above gaging station 

RECORDS AVAILABLE.--Chemical analyses: May 1955 to September 1957.

Water temperatures: May 1955 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 120 ppm Feb. 22-23; minimum, 78 ppm May 20-21.

Hardness: Maximum, 59 ppm Feb. 22-23; minimum, 38 ppm Feb. 24-25.

Specific conductance: Maximum daily, 160 micromhos Feb. 23; minimum daily, 98.6 micromhos Feb. 2

Water temperatures: Maximum, 62°F June 27; minimum, 41°F Jan. 27. 

EXTREMES, 1955-57. Dissolved solids: Maximum, 124 ppm Nov. 22-23, 1955; minimum, 78 ppm May 20-21

Hardness: Maximum, 59 ppm Feb. 22-23, 1957; minimum, 28 ppm Jan. 14-15, 1956.

Specific conductance: Maximum daily, 161 micromhos Apr. 12, 1956; minimum daily, 68.7 micromhos 

Water temperatures: Maximum, 62°F June 27, 1957; minimum, 41°F Jan. 27, 1957.

REMARKS. Records of specific conductance of daily samples available in district office at Sacramen

Red Bluff for water year October 1956 to September 1957 given in WSP 1515. No appreciable inflo

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-10, 1956...

Jan. 1-12, 1957 ..

Mar. 21-31 ......

Mean 

discharge 

(cfs)

7,642 

7,850 

8,429 

8,341 

7,544 

6,991

7,021 

6,376 

4,802

7,620 

5,638 

 5, 520 

4,695

3,942 

4,980 

33,300 

25,400 

49,800 

15,960 

8.S92

Silica 

(Si02)

24 

24 

24 

24 

24 

28

31 

31 

31

26 

31

29 

24 

18 

22 

26 

25 

27

Iron 

(Fe)

0.04 

.04 

.06 

.07 

.03 

.02

.03 

.03 

.02

.11 

.08

.04 

.06 

.04 

.05 

.04 

.07 

.04

Calcium 

(Ca)

9.6 

9.8 

10 

10 

10 

11

11 

12 

11 

13 

12 

9.6 

12

13 

15 

8.8 

10 

11 

12 

12

Magnesium 

(Mg)

4.4 

4.5 

4.3 

4.7 

4.7 

5.1

6.0 

5.6 

6.4 

5.7 

5.6 

6.6 

6.6

5.5 

5.2 

3 9 

4.9 

5.0 

4.9 

5.1

Sodium 

(Na)

5.5 

5.5 

6.6 

5.6 

6.2 

7.2

8.3 

10 

8.8 

8.8 

8.3 

7.8 

9.2

8.7 

9.2 

5.0 

5.1 

7.1 

6.8 

7.2

Potassium 

(K)

1.3 

1.5 

1.4 

1.2 

1.4 

1.6

1.4 

2.5 

1.7 

1.5 

1.4 

1.4 

1.6

1.5 

1.5 

1.1 

1.1 

1.3 

1.2 

1.3

Bicarbonate 

(HCOS )

62 

64 

63 

64 

66 

73

76 

78 

79 

64 

64 

64 

77

77 

69 

44 

56 

64 

62 

68

Sulfate 

(SO,)

4.2 

3.8 

5.8 

3.5 

4.2 

5.4

4.8 

4.8 

4.8 

8.6 

9.6 

2.9 

7.7

3.8 

12 

9.6 

5.8 

6.7 

9.6 

6.7

Chloride 

(Cl)

2.2 

2.5 

3.0 

3.0 

2.8 

3.0

2.5 

4.0 

3.5

5.0 

5.0

5.2 

6.8 

2.0 

3.0 

3.0 

3.0 

3.2

Fluoride 

(F)

0.2 

.2 

.2 

.2 

.2 

.1

.1 

.1 

.1

.1 

.1 

.2

.2 

.2 

.2

Nitrate 

(NOS )

0.4 

.4 

.5 

.5 

.6 

.3

 7. 

.8 

.7

1.1 

.7

.8 

1.9 

1.3 

.6 

.4 

.5 

.3

Boron 

(B)

0.04 

.06 

.01 

.04 

.00 

.01

.00 

.03 

.06 

.05 

.09 

.00 

.05

.08 

.10 

.12 

.07 

.08 

.06 

.06

P
Apr. 1-11, 1957 ..

Weighted average a

5,160

6,821

8,361

28, 850

13,850

8,856

9,497

8,207

7,268

9,430

29

26

26

26

26

b26

.12

.07

.09

.14

.04

.00

.00

.02

bO.05

13

12

12

10

9.6

10

11

4.6

4.6

3.6

4.5

4.0

3.9

4.0

4.5

3.4

4.1

4.6

5.4

4.6

6.1

4.8

7.4

7.3

7.3

7.4

6.1

5.9

6.1

7.2

6.9

6.9

6.9

6.7

7.1

6.7

7.0

1.4

1.4

1.4

1.8

1.1

1.8

1.8

1.8

1.5

1.5

1.7

1.6

bl.5

70

65

65

67

60

62

64

64

64

64

68

59

65

7.7

9.0

6.7

4.0

3.8

5.8

1.9

4.8

12

b5. 3

3.5

2.4

2.6

2.4

2.3

4.0

3.2

3.5

2.5

3.5

3.5

2.5

4.0

b3.1

.2

.2

.2

.2

.2

.0

.0

.0

.0

.0

.0

.0

.0

.1

.0

bO. 1

.3

.3

.3

.3

.3

.8

.7

.7

.6

.5

.1

.5

bO. 5

.00

.00

.00

.00

.00

.00

.00

.00

.00

.06

.24

.46

.00

0.06

a Represents 100 percent of runoff for water year October 1956 to September 1957. 

b Includes estimates for missing data.
312 PACIFIC SLOPE BASINS IN CALIFORNIA

SACRAMENTO RIVER BASIN Continued 

SACRAMENTO RIVER AT BEND, CALIF.--Continued

Temperature (°F> of water, water year October 1956 to September 1957 

/Once-daily measurement, generally between 5 p. m. and 6 p. mj

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

Average

Oct.

56

55

55

55

56

58

55

55

55

54

54

54

54

54

54

54

54

54

54

54

54

54

53

52

52

52

52

52

51

51

50

54

Nov.

49

50

53

53

53

54

53

54

54

54

54

54

54

52

53

53

53

52

51

51

51

52

51

51

52

51

50

50

51

51

52

Dec.

51

51

50

50

49

50

49

48

48

49

49

52

51

52

50

50

49

50

48

49

49

48

47

47

48

47

47

47

47

47

47

49

Jan.

46

49

48

46

47

47

47

46

46

46

46

46

47

47

47

47

46

45

44

43

44

45

45

44

42

41

44

43

44

45

45

Feb.

44

45

45

44

45

45

43

45

46

47

49

48

52

52

52

52

51

52

51

50

49

51

51

51

50

50

52

50

49

Mar.

49

47

47

46

48

50

50

50

51

--

49

49

49

49

48

47

50

51

52

51

49

49

52

53

52

52

53

53

50

50

49

50

Apr.

54

55

58

57

60

52

56

56

57

58

56

56

54

54

54

54

51

52

52

54

54

51

58

52

52

58

58

58

59

58

55

May

54

56

56

58

56

59

54

54

55

55

55

55

54

54

55

57

55

54

52

52

54

56

55

58

58

57

59

59

58

59

60

56

June

59

59

58

60

58

60

59

59

58

59

58

58

56

55

57

58

58

60

60

60

60

60

60

59

60

60

62

60

58

59

59

July

56

58

58

59

58

57

58

58

59

58

59

58

57

59

58

58

58

57

57

56

56

58

58

58

58

59

58

59

59

57

58

58

Aug.

58

58

58

58

57

57

58

57

58

58

58

57

58

58

57

57

58

57

59

57

57

58

58

57

57

57

57

57

57

57

57

57

Sept.

57

56

56

56

56

57

56

55

56

56

56

55

55

55

55

56

57

56

57

58

58

58

58

57

57

58

58

57

57

56

57
SACRAMENTO RIVER BASIN Continued 

MILL CREEK AT MOUTH, NEAR LOS MOLINOS, CAL

LOCATION. At bridge on U. S. Highway 99, 0.8 mile upstream from confluence with Sacramento River, 

County.

DRAINAGE AREA. 134 square miles (above gaging station). 

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for Mill Creek near Los Molinos for water year October 1956 to Septe

between gaging station and sampling point.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 16, 1956.......

Dec. 11 ............

Jan. 11, 1957.......

Sept. 17............

Discharge 

(cfs)

117 

120 

124 

115 

161 

498

274 

398 

339 

178 

115 

105

Silica 

(SiO,)

29 

38

Iron 

(Fe)

0.05 

.00

Calcium 

(Ca)

13 

12 

13 

13 

13 

8.0

9.6 

8.7 

9.2

15

Magnesium 

(Mg)

4.8 

S. 5 

6.7 

5.2 

5.7 

3.0

3. 6, 

2.9 

2.4

6.8

Sodium 

(Na)

15 

16 

17 

14 

18 

7.2

10 

8.7 

7.7 

11 

15 

16

Potassium 

(K)

2.5 

2.9 

2.4 

1.0 

2.4 

1.3

1.7 

1.6 

1.6

3.2

Bicarbonate 

(HCO.)

63 

63 

65 

68 

63 

42

48 

38 

34 

49 

80 

76

Carbonate 

(CO,)

Sulfate 

(SOJ

13 

13

Chloride 

(Cl)

18 

18 

20 

20 

20 

7.2

9.5 

8.2 

6.5 

20 

15 

19

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

0.1

. 5
SACRAMENTO RIVER BASIN--Continued

DEER CREEK AT HIGHWAY 99E BRIDGE, NEAR VINA, CAL

(Formerly published as Deer Creek near Vina, Cal

LOCATION. At gaging station downstream from U. S. Highway 99E, 1 mile north of Vina, Tehama County, 

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Gaging station maintained and operated by State of California Department of Water Resources

for water year October 1956 to September 1957 given in State of California Bulletin No. 23.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 16, 1956.. .....

Dec. 11 ............

Jan. 11, 1957.......

May 7 ..............

Sent. 17....... .....

Discharge 

(cfs)

124 

125 

133 

118 

164 

680

260 

264 

184 

111 

95 

92

Silica 

(SiO,)

32 

44

Iron 

(Fe)

0.00 

.00

Calcium 

(Ca)

18 

12 

11 

12 

11 

7. 1

9.0 

10 

11

22

Magnesium 

(Mg)

11 

6.3 

7.4 

6.8 

6.9 

4.0

4.5 1 

4. 5 

4.5

16

Sodium 

(Na)

12 

10 

10 

10 

10 

4.3

5.9 

6.2 

8.2 

12 

18 

14

Potassium 

(K)

2.2 

2.0 

1.9 

1.6 

1.6 

.9

1.2 

1.2 

1.5

3.2

Bicarbonate 

(HCO,)

134 

89 

90 

92 

87 

46

63 

68 

72 

138 

a 154 

b!69

Carbonate 

(CO,)

Sulfate 

(SO.)

1.0 

2.9

Chloride 

(Cl)

5.4 

4.0 

4.0 

3.0 

3.9 

1.6

2.0 

2.2 

3.5 

3. 8 

5.5 

6.4

Fluoride 

(F)

0. 1 

.0

Nitrate 

(NO,)

0.2 

.6

Bo

ro

(B

0.0

.0

.2

.

.

.0

.

.0

.

.

. 

. 

a Includes equivalent of 11 parts per million of carbonate (CO3 ). 

b Includes equivalent of 3 parts per million of carbonate (CO3 ).
SACRAMENTO RIVER BASIN--Continued

SACRAMENTO RIVER NEAR HAMILTON CITY, CALI

LOCATION. At gaging station on bridge on State Highway 32, 1.3 miles northeast of Hamilton City, G

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Gaging station maintained and operated by State of California Department of Water Resourc

Hamilton City for water year October 1956 to September 1957 given in State of California Bullet

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 16, 1956.... 

Nov. 19 .........

Jan. 11, 1957.... 

Feb. 14 .........

Sept. 17 .........

Discharge 

(cfs)

7,320 

7,420 

7,320 

5,200 

4,360 

20, 200

5,020 

7,900 

8,220 

7,580 

6,620 

6.440

Silica 

(Si02)

25 

24

Iron 

(Fe)

0.14 

.03

Calcium 

(Ca)

10 

10 

12 

13 

13 

11

14 

12 

12

10

Magnesium 

(Mg)

5.7 

5.5 

5.8 

5.6 

6.6 

5.5

7.9 

4.9 

3.9

4.7

Sodium 

(Na)

6.1 

6.9 

8.2 

9.2 

10 

7.0

7.7 

7.0 

6.9 

7.1 

6.8 

6.7

Potassium 

(K)

1.0 

1.4 

1.7 

1.6 

1.5 

1.4

1.2 

1.3 

1.3

1.4

Bicarbonate 

(HCOS)

66 

71 

79 

86 

82 

67

76 

70 

67 

66 

66 

65

Sulfate 

(SO,)

4.8 

1. 5

Chloride 

(Cl)

2.6 

2.4 

3.9 

5.0 

7.2 

3.2

4.8 

3.0 

3.0 

2. 8 

2 8 

3.3

Fluoride 

(F)

0.2 

.0

Nitrate 

(NO,)

0.2 

1. 1

Boron 

(B)

0.07 

.03 

.04 

.07 

.04 

.07

.06 

.02 

.08 

.01 

.00 

.05
SACRAMENTO RIVER BASIN Continued

BIG CHICO CREEK NEAR CHICO, CALIF.

LOCATION. At gaging station in Arroyo Chlco Grant, 1.8 miles upstream from golf clubhouse In Bidwell 

7 miles northeast of Chico, Butte County. 

DRAINAGE AREA. 67.9 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 16, 1956....

Jan. 11, 1957 ... 

Feb. 14 .........

Mar. 13 .........

Sect. 17 .........

Mean 

discharge 

(cfs)

29 

30 

33 

36 

74 

279

65 

78 

55 

32 

27 

24

Silica 

(Si02)

34 

39

Iron 

(Fe)

0.01 

.01

Calcium 

(Ca)

16 

16 

16 

16 

11 

9.5

13 

12 

13

16

Magnesium 

(Mg)

8.0 

8.5 

8.8 

8.3 

8.1 

3.5

5.7 

5.1 

6.2

8.0

Sodium 

(Na)

14 

14 

14 

17 

9.8 

4.3

8.2 

8.2 

8.2 

14 

14 

15

Potassium 

(K)

1.1 

1.3 

1.1 

2.3 

.8 

.4

.7 

.9 

.8

1.6

Bicarbonate 

(HCO,)

111 

109 

110 

110 

85 

46

80 

74 

82 

101 

107 

108

Sulfate 

(SO,)

1.5 

4.6

Chloride 

(Cl)

10 

11 

11 

12 

7.0 

3.0

6.0 

5.2 

6.0 

8.5 

12 

12

Fluoride 

(F)

0.0 

.0

Nitrate 

(NO,)

0.0 

1.3

Boron 

(B)

0.09 

.13 

.05 

.15 

.02 

.00

.16 

.03 

.04 

.19 

.17 

.17

P
SACRAMENTO RIVER BASIN Continued' 

SACRAMENTO RIVER AT BUTTE CITY, CALIF

LOCATION. At highway bridge just below gaging station and, 0.5 mile south of Butte City, Glenn Cou

RECORDS AVAILABLE. Chemical analyses: May 1955 to September 1957.

Water temperatures: May 1955 to September 1957. 

EXTREMES, 1956-57.--Dissolved solids: Maximum, 128 ppm Jan. 23-31; minimum, 81 ppm May 19-21.

Hardness: Maximum, 68 ppm Feb. 1-10; minimum, 40 ppm May 19-21.

Specific conductance: Maximum dally, 179 micromhos Jan. 31; minimum dally, 102 mlcromhos May 20

Water temperatures: Maximum, 69°F July 26; minimum, 43°F Jan. 28-31. 

EXTREMES, 1955-57. Dissolved solids: Maximum, 128 ppm Jan. 23, 26-31, 1957; minimum, 81 ppm May 

Hardness: Maximum, 70 ppm June 30, 1956; minimum, 35 ppm Dec. 19-21, 1955.

Specific conductance: Maximum dally, 179 mlcromhos Jan. 31, 1957; minimum dally, 81.1 micromhos 

Water temperatures: Maximum, 74°F June 5, 7, 1955; minimum, 43°F Jan. 28-31, 1957.

REMARKS. Records of specific conductance of daily samples available In district office at Sacrame

October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-15, 1956..

Dec. 11-22 ......

Jan. 1-13, 1957..

Mar. 20-31......

Mean 

discharge 

(cfs)

7,183 

7,654 

8,867 

7,801 

7,112

6,926 

7,301 

6,551 

5,644 

12,600 

6,990 

5,254

4,686 

5,002 

39,040 

45, 840 

23,200 

12.610

Silica 

(S10,)

27 

28 

24 

27 

29

32 

29 

32 

31

26 

30

31 

30 

19 

29 

28 

25

Iron 

(Fe)

0.00 

.00 

.05 

.03 

.04

.02 

.01 

.01 

.02

.07 

.04

.03 

.03 

.26 

.06 

.06 

.05

Calcium 

(Ca)

12 

12 

12 

12 

13

16 

8.8 

13 

14 

13 

13 

14

13 

15 

10 

11 

12 

13

Magnesium 

(Mg)

4.4 

4.4 

4.4 

4.9 

5.5

3.6 

8.0 

6.2 

5.6 

3.8 

6.0 

7.1

8.6 

6.7 

4.9 

3.9 

4.6 

5.7

Sodium 

(Na)

7.1 

7.0 

7.5 

7.1 

8.3

8.8 

9.5 

9.4 

9.7 

8. 2 

9.1 

10

11 

10 

5.3 

7.4 

7.4 

7.9

Potassium 

(K)

1.6 

1.4 

1.4 

1.3 

1.9

1.6 

2.1 

1.8 

2.0 

1.9 

1.8 

1.8

1.7 

1.6 

1.4 

1.4 

1.7 

1.9

Bicarbonate 

(HCO,)

66 

68 

64 

70 

75

78 

79 

83 

84 

56 

69 

83

89 

86 

51 

64 

66 

75

Sulfate 

(S04 )

5.8 

5.8 

5.8 

3.8 

5.8

5.8 

3.8 

6.7 

5.8

9.6 

8.6

7.7 

5.8 

4.8 

2.5 

5.2 

5.4

Chloride 

(Cl)

3.5 

3.5 

4.5 

3.5 

6.0

4.5 

4.5 

4.5 

5.0

7.0 

7.0

6.0 

6.0 

6.0 

3.0 

4.0 

4.5

Fluoride 

(F)

0.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1

.5 

.3

.1 

.1 

.1 

.2 

.2 

.2

Nitrate 

(NO,)

1.5 

.3 

1.4 

.8 

1.4

.5 

.7 

.6 

1.0

1.6 

1.1

1.2 

1.1 

1.2 

.5 

.6 

.5

Boron 

(B)

0.02 

.00 

.20 

.19 

.20

.19 

.13 

..16 

.20

.16 

.18

.00 

.11 

.04 

.00 

.00 

.00
SACRAMENTO RIVER BASIN Continued

SACRAMENTO RIVER AT BUTTE CITY, CALIF. Contin

Chemical analyses, in parts per million, water year October 1956 to Septem

Date of collection

Apr. 1-14, 1957...

June 18-30

July 11-20 .......

Antr 91 ^1

Sept. 28-30.......

Weighted average a

Mean 

discharge 

(cfs)

6,178 

8,131 

7,084 

8,157 

28,370 

15,580

9,039 

6,860 

7,146 

7,184 

6,919

6,666 

6,110 

6,216 

6,204 

6,197 

12,170

9,272

Silica 

(SiO,)

30 

27 

28 

26 

23 

25

27 

25 

26 

27 

29

27 

28 

26 

27 

25 

25

b27

Iron 

(Fe)

0.01 

.03 

.03 

.02 

.10 

.06

.10 

.03 

.02 

.02 

.02

.01 

.01 

.01 

.01 

.02 

.02

0.05

Calcium 

(Ca)

14 

13 

14 

13 

10 

12

12 

12 

11 

11 

11

11 

11 

11 

11 

9.6 

10

12

Magnesium 

(Mg)

6.6 

6.2 

5.6 

6.9 

3.8 

4.6

5.0 

5.1 

5.5 

5.2 

5.2

5.0 

5.2 

5.2 

5.7 

6.3 

5.1

5.2

Sodium 

(Na)

8.9 

8.9 

8.2 

8.6 

6.6 

7.3

8.1 

8.2 

7.8 

8.0 

7.6

7.5 

7.5 

7.5 

7.3 

7.6 

7.3

7.8

Potassium 

(K)

2.0 

1.8 

2.1 

2.1 

1.9 

2.1

2.0 

2.0 

1.9 

1.8 

1.7

.7 

.7 

.6 

.7 

.6 

2.1

1.7

Bicarbonate 

(HCO,)

82 

70 

76 

72 

56 

65

71 

72 

70 

71 

69

68 

68 

69 

68 

71 

56

69

Sulfate 

(SO,)

9.6 

13 

7.7 

15 

4.8 

6.3

4.4 

4.4 

5.8 

4.8 

4.2

4.8 

5.8 

5.4 

7.7 

6.7 

8.1

b6.0

Chloride 

(Cl)

5.5 

4.5 

4.0 

4.0 

2.8 

3.4

3.3 

3.6 

4.0 

3.5 

3.6

3.4 

3.4 

3.3 

4.0 

3.5 

5.1

b4.2

Fluoride 

(F)

0.1 

.1 

.2 

.2 

.2 

.2

.2 

.1 

.0 

.1 

.1

.1 

.1 

.1 

.1 

.2 

.1

b4.1

Nitrate 

(NOS )

0.9 

.8 

.6 

.1 

1.3 

1.3

1.1 

.7 

.3 

1.2 

1.4

1.6 

1.2 

1.4 

1.3 

.1 

3.5

bO.9

Boron 

(B)

0.13 

.07 

.06 

.00 

.06 

.02

.01 

.01 

.14 

.07 

.04

.06 

.07 

.05 

.00 

.10 

.04

bO.06

P

m

l

a Represents 100 percent of runoff for. water year October 1956 to September 1957. 

b Includes estimates for missing data.
SACRAMENTO RIVER BASIN 

SACRAMENTO RIVER BASIN Continued 

SACRAMENTO RIVER AT BUTTE CITY, CALIF. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 5 p. tn.J

3*9

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

29

30

31

Average

Oct.

60

62

61

61

61

62

63

68

67

66

66

59

59

58

57

$6

57

57

58

59

57

56

54

55

54

54

51

53

53

59

Nov.

50

53

53

54

55

55

54

54

57

54

56

56

54

53

52

52

54

52

52

50

50

50

51

51

51

50

50

50

50

--

53

Dec.

50

50

51

50

50

48

49

47

48

47

48

49

49

53

49

51

50

50

49

50

48

49

50

48

49

51

51

49

49

49

--

49

Jan.

49

50

48

47

47

49

46

48

45

50

48

48

49

49

50

50

48

45

47

46

54

46

-

46

44

43

43

43

43

47

Feb.

45

45

46

45

47

47

47

48

48

50

52

52

54

55

56

58

_

58

57

55

54

56

55

56

54

55

54

54

--

--

52

Mar.

54

54

51

51

50

52

52

53

54

53

55

55

54

54

54

53

55

54

54

56

54

54

54

54

55

58

57

59

57

56

57

54

Apr.

56

59

60

61

62

61

60

61

62

62

61

60

61

60

59

57

_

59

60

58

57

59

60

60

60

59

61

63

65

64

--

60

May

60

60

60

60

62

64

62

60

58

60

60

58

59

68

59

60

57

57

55

53

54

55

56

59

60

62

63

62

63

62

62

60

June

..

65

65

65

64

64

64

65

61

63

63

65

63

61

60

..

61

63

63

63

63

64

64

_.

64

64

65

64

65

_

--

64

July

65

65

61

61

61

61

60

61

61

60

60

60

59

59

58

59

60

60

58

56

__

57

56

58

59

69

59

60

57

57

47

59

Aug.

55

56

56

54

55

54

54

54

54

56

54

55

54

55

54

54

54

56

54

54

55

54

53

52

52

51

52

51

54

Sept.

52

51

52

_

53

53

54

53

52

51

50

.,

51

50

49

50

50

49

50

49

51

50

50

48

48

48

48

49

50
SACRAMENTO RIVER BASIN Continued

BUTTE CREEK NEAR CHICO, CALIF.

LOCATION. At gaging station, 0.7 mile downstream from Little Butte Creek and 7.5 miles east of Ch

DRAINAGE AREA. 148 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 19

Date of collection

Oct. 16, 1956.....

Jan. 10, 1957.....

Sept. 16..........

Discharge 

(cfs)

167 

135 

127 

135 

215 

856

357 

429 

315 

175 

157 

145

Silica 

(Si02)

--

20

26

Iron 

(Fe)

--

0.03

.00

Calcium 

(Ca)

11 

12 

12 

13 

8.8

8.6 

8.3 

10

7.6

Magnesium 

(Mg)

4.9 

4.9 

4.9 

4.3 

6.6

3.0 

2.9 

2.9

6.6

Sodium 

(Na)

3.6 

3.6 

3.8 

3.9 

4.2

2

0

2.6 

2.7 

2.9 

4.9

5.5

Potassium 

(K)

0.8 

.9 

1.0 

.7 

.6

.6 

.5 

.6

1.5

Bicarbonate 

(HCO.)

69 

75 

72 

70 

68 

37

45 

44 

48 

62 

62 

67

Sulfate 

(SO.)

0.0 

2.9

Chloride 

(Cl)

0.2 

1.2 

.5 

1.0 

1.0 

1.0

.5 

1.9 

.8 

.8 

1.4 

1.0

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

0.0 

.0

Boron 

(B)

0.00 

.00 

.00 

.00 

.00 

.06

.08 

.05 

.02 

.06 

.00 

.00
SACRAMENTO RIVER BASIN Continued 

COLUSA TROUGH NEAR COLUSA, CALIF.

LOCATION. At gaging station, 3 miles west of Colusa, Colusa County, on State Highway 20, and 6 m

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Gaging station maintained and operated by State of California Department of Water Resou

passing down the Back Barrow Pit and entering the Sacramento River just above Knights Landing 

drain at Highway 20 for water year October 1956 to September 1957 given in State of California 

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 25, 1956....

Jan. 14, 1957....

Apr. 15 .........

Sept. 10, 7:15 a.m. 

Sept. 10, 11:30 a.m.

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

Discharge 

(cfs)

404 

269 

296 

1,040 

90 

137

535 

1,580 

607 

723 

765 

867

803 

899 

993 

963 

1,000

1,220 

1,240 

1,490 

1,470 

1,150 

559 

973

Silica 

(S102)

15 

22 

18

19 

35

17 

18

20 

20 

18 

23 

20 

21 

20

Iron 

(Fe)

0.03 

.04

.03 

.01

Calcium 

(Ca)

22 

28 

25 

25 

55 

53

22 

19 

26 

22

23

22 

21

22 

22

22 

22 

22 

24 

22 

23 

28

Magnesium 

(Mg)

15 

21 

17 

16 

53 

44

14 

12 

16 

15

15

16 

16

15 

16

14 

15 

15 

14 

16 

15 

18

Sodium 

(Na)

42 

62 

54 

73 

180 

155

35 

39 

49 

36 

36 

35

39 

38 

38 

37 

36

37 

39 

38 

38 

38 

39 

56

Potassium 

(K)

2.2 

2.7 

2.5 

5.4 

1.6 

1.6

2.4 

1.8 

1.7 

1.5

2.1

1.9 

1.7

2.1 

2.1

2.0 

2.0 

2.2 

2.1 

2.0 

2.3 

4.3.

Bicarbonate 

(HCO,)

163 

200 

178 

148 

363 

a339

146 

143 

192 

175 

180 

177

182 

180 

173 

176 

178

178 

182 

178 

175 

b!77 

164 

196

Sulfate 

(SO,)

38 

30

32

33 

31

31 

37

33 

33 

33 

33 

31 

38 

71

Chloride 

(Cl)

22 

33 

30 

38 

104 

98

20 

16 

21 

14

13

16 

16 

15 

16 

15

15 

17 

18 

17 

20 

20 

31

Fluoride 

(F)

0.2 

.5

.2

.4 

.0

.0

.4

.2 

.3 

.5 

.2 

.2 

.1 

.6

Nitrate 

(NO,)

0.9 

1.4

1.3

2.2 

1.4

.7 

.2

1.1 

.4 

1.8 

.6 

1.5 

1.1 

1.2

Boron 

(B)

0.09 

.17 

.01 

.15 

.30 

.27

.23 

.17 

.20 

.23

.11

.16 

.13 

.14 

.18 

.14

.27 

.16 

.08 

.21 

.17 

.00 

.35

a Includes equivalent of 14 parts per million of carbonate (CO,) 

b Includes equivalent of 4 parts per million of carbonate (CO,).
SACRAMENTO RIVER BASIN Continued

SACRAMENTO RIVER AT KNIGHTS LANDING, CAL

LOCATION. At Southern Pacific Railroad bridge at Knights Landing, Yolo County, just downstream fr

Sacramento. 

RECORDS AVAILABLE.--Chemical analyses: March 1951 to September 1957.

Water temperatures: March 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 163 ppm Aug. 14-23; minimum, 84 ppm Feb. 25-28.

Hardness: Maximum, 83 ppm Aug. 24-31; minimum, 42 ppm May 19-22.

Specific conductance: Maximum daily, 301 micromhos Aug. 25; minimum daily, 115 micromhos Mar. 16

Water temperatures: Maximum, 76'F July 27, 28; minimum, 42'F Feb. 1, 3, 4. 

EXTREMES, 1951-57. Dissolved solids: Maximum, 244 ppm May 12, 19, 1953; minimum, 78 ppm Dec. 8-10

Hardness: Maximum, 115 ppm Aug. 26-28, 1955; minimum, 31 ppm Dec. 8-10, 1955.

Specific conductance: Maximum daily, 447 micromhos Sept. 9, 1952; minimum daily, 83.7 micromhos 

Water temperatures: Maximum, 78°F July 23, 1952; minimum, 42°F Jan. 3, 9-11, 1952, Feb. 1, 3, 4, 

REMARKS. Records of specific conductance of daily samples available in district office at Sacramen

October 1956 to September 1957 given in WSP 1515. Considerable inflow during irrigation season 

0.3 mile above sampling site.

Chemical analyses, In parts per million, water year October 1956 to 

Date of collection

Oct. 1-10, 1956 . .

Oct. 21-31.......

Nov. 21-30 ......

Jan. 1-9, 1957 . . . 

Jan. 10-14.......

Feb. 25-28 ......

Mar. 23-31 ......

Mean 

discharge 

(cfs)

7,949 

7,860 

8,200 

9,383 

8,396 

7,944

7,838 

8,042 

7,644 

6,478 

6,756 

9,734 

6,982

5,317 

7,600 

22,500 

23,340 

20,610 

13.220

Silica 

(SIO,)

29 

27 

28 

27 

28 

28

30 

31 

30 

31 

33 

27 

32

31 

19 

19 

25 

23 

26

Iron 

(Fe)

0.05 

.04 

.03 

.05 

.05 

.04

.03 

.01 

.01 

.01 

.01 

.08 

.03

.00 

.15 

.16 

.07 

.10 

.04

Calcium 

(Ca)

13 

13 

13 

12 

12 

13

14 

14 

14 

14 

15 

13 

16

16 

11 

11 

11 

11 

14

Magnesium 

(Mg)

6.0 

6.2 

5.7 

5.8 

6.3 

6.7

5.8 

6.3 

6.3 

7.5 

8.1 

6.7 

7.5

10 

4.3 

4.0 

6.9 

6.2 

8.S

Sodium 

(Na)

9.5 

11 

10 

9.0 

9.4 

11

11 

12 

12 

12 

15 

13 

14

13

6.5 

5.9 

7.8 

6.8 

11

Potassium 

(K)

1.2 

1.3 

1.4 

1.3 

1.3 

1.8

.8 

.6

.6 

.6 

.7 

.7 

.6

.5 

.2 

.2 

.2 

.3 

1.2

Bicarbonate 

(HCOS)

79 

79 

77 

73 

76 

84

85 

88 

88 

93 

101 

75 

91

98 

54 

52 

69 

65 

86

Sulfate 

(SO,)

7.7 

8.6 

8.6 

7.7 

7.7 

5.8

7.7 

7.7 

8.6 

8.6 

8.6 

12 

16

15 

9.2 

7.3 

9.6 

7.7 

13

Chloride 

(Cl)

5.0 

5.5 

5.0 

5.0 

5.5 

6.0

6.0 

5.0 

6.0 

6.5 

9.0 

9.5 

10

9.4 

4.2 

4.0 

4.5 

4.1 

7.5

Fluoride 

(F)

0.1 

.0 

.2 

.1 

.2 

.1

.2 

.2 

.2 

.1 

.1 

.3 

.3

.1 

.4 

.4 

.2 

.2 

.1

Nitrate 

(NO,)

0.5 

.4 

.8 

.7 

.5 

.3

.6 

.6 

.5 

.6 

.5 

1.5 

.9

.7 

1.0 

1.1 

.7 

.6 

.5

Boron 

(B)

0.16 

.09 

.05 

.15 

.03 

.09

.23 

.18 

.18 

.21 

.21 

.20 

.17

.08 

.08 

.01 

.02 

.05 

.06

P
Apr. l-io, 1957...

Sept. 29-30 .......

Weighted average b

8,525

7,929

17,300

5,829

6,042

6,022

12,850

8,829

30

30

28

OQ

29

27

.02

.05

.01

.01

.15

0.05

16

14

12

13

7.3

8.5

6.0

7.8

8.9

7.8

7.2

11

16

22

12

16

12

.8

.7

.9

.2

.3

.8

.8

.7

.7

2.0

2.9

2.3

1.6

93 

92

93

59

68

86

94

90

92

96

118

66

74

84

9.6

19

7.7

12

13

17

12

17

11

7.0 

6.5

9.0

3.0

4.0

7.0

9.5

8.0

9.0

12

8.0

12

6.9

.2

.0

.2

.1

.1

.1

.1

.3

.1

.1

0.2

.9 

.9

.6

.8

.6

.6

.8

1.5

.5

.3

.0

.2

3.0

2.3

0.8

.17

.17

.21

.19

.26

.15

.14

.23

.14

0.13

a Calculated from determined constituents.

b Represents 100 percent of runoff for water year October 1956 to September 1957.
324 PACIFIC SLOPE BASINS IN CALIFORNIA

SACRAMENTO RIVER BASIN Continued

SACRAMENTO RIVER AT KNIGHTS LANDING, CALIF. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-dally measurement at approximately 10 a. mj

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

Average

Oct.

62

62

62

63

63

60

59

61

62

62

60

59

58

58

57

57

57

57

58

57

57

58

57

56

55

55

54

53

52

52

51

58

Nov.

51

50

49

51

52

53

54

54

55

55

56

55

54

53

52

52

51

49

49

49

48

48

48

48

49

48

49

48

49

51

Dec.

49

48

48

48

48

48

45

48

49

48

47

47

48

48

48

47

47

46

45

46

46

46

45

45

45

43

45

44

44

45

47

Jan.

45

44

44

45

45

44

44

45

44

44

44

44

44

43

44

45

46

46

45

45

45

45

45

45

45

45

44

45

43

44

45

Feb.

42

42

42

44

44

45

46

46

45

47

49

49

50

51

51

52

52

52

52

54

52

51

51

50

50

51

52

..

49

Mar.

52

52

52

52

50

50

51

52

51

52

51

52

53

53

51

51

52

51

50

51

52

52

52

53

54

55

55

56

57

57

57

53

Apr.

56

55

57

57

58

57

57

59

60

58

61

60

60

59

60

60

58

57

57

57

56

57

57

58

58

60

61

62 .

63

65

59

May

65

65

62

63

62

64

62

60

57

--

56

57

56

56

56

56

56

55

56

61

60

58

56

55

59

58

58

62

65

65

66

60

June

67

68

68

69

69

70

68

57

58

68

69

72

67

66

67

68

69

69

69

70

70

71

71

72

74

75

74

73

72

69

July

71

70

70

71

71

70

71

72

72

71

71

71

70

71

71

70

70

70

69

69

69

69

69

69

70

70

76

76

70

69

74

71

Aug.

70

70

70

69

68

69

68

68

68

69

70

70

70

69

70

70

70

69

70

69

69

70

70

70

69

70

69

68

68

67

67

69

Sept.

68

69

69

70

70

70

69

69

69

69

69

69

68

68

68

57

57

60

65

65

65

67

68

67

65

65

64

64

64

62

66
SACRAMENTO RIVER BASIN Continued 

SACRAMENTO SLOUGH NEAR KNIGHTS LANDING, C

LOCATION. At gaging station on levee near Reclamation District 1,500 pumping plant, 1 mile above 

Sutter County.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Gaging station maintained and operated by State of California Department of Water Resour

By-Pass area and the Reclamation District 1,500. Records of discharge for Sacramento Slough to 

September 1957 given in State of California Bulletin No. 23.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 25, 1956..... 

Nov. 13 ..........

Jan. 14, 1957.....

Sept. 10 ..........

Discharge 

(cfs)

215 

a 490 

213 

a 908 

339

588 

608 

504 

a 462 

606 

766

Silica 

(SiO.)

25 

33

Iron 

(Fe)

0.03 

.02

Calcium 

(Ca)

30 

30 

43 

35 

38 

10

23 

25 

30

30

Magnesium 

(Mg)

20 

23 

27 

26 

25 

6.8

16 

15 

21

22

Sodium 

(Na)

28 

29 

42 

35 

37 

8.0

20 

20 

25 

33 

32 

29

Potassium 

(K)

2.4 

2.8 

2 3 

2.1 

2.2 

1.7

1.7 

2.0 

1.4

2.4

Bicarbonate 

(HCO.)

215 

230 

269 

269 

266 

68

158 

162 

211 

227 

233 

228

Sulfate 

(SO,)

10 

6.7

Chloride 

(CD

27 

30 

58 

33 

37 

4.6

21 

17 

29 

36 

32 

24

Fluoride 

(F)

0.1 

.1

Nitrate 

(NO,)

0.0 

1.1

Boron 

(B)

0.01 

.04 

.13 

.04 

.06 

.12

.04 

.07 

.07 

.19 

.00 

.02
SACRAMENTO RIVER BASIN Continued 

FEATHER RIVER NEAR OROVILLE, CALIF.

LOCATION. At gaging station 75 feet upstream from bridge on Feather River Highway, 1.9 miles down

business district, Butte County. 

DRAINAGE AREA. 3,611 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

Water temperatures: October 1953 to September 1954, October 1956 to September 1957.

Sediment records: November 1956 to September 1957. EXTREMES, ' ....

Sedimen 

EXTREMES,

REMARKS. Samples for suspended sediment collected at bridge on ciark"Road, 5.2 miles'below gaging 

September 1957 given in WSP 1515. No appreciable inflow between sampling point and eag

Chemical analyses, in parts per million, water year October 1956 

1956

Date of collection

Oct. 15, 1956.....

Jan. 10, 1957.....

Sent. 16..........

Discharge 

(cfs)

2,740 

3,060 

1,990 

2,440 

3,520

13,100 

5,300 

6,390 

2,240 

1,970 

2.720

Silica 

(310,)

14 

16

Iron 

(Fe)

0.04 

.00

Calcium 

(Ca)

11 

10 

12 

12 

11

6.4 

9.5 

7.6

16

Magnesium 

(Mg)

5.0 

5.0 

5.8 

5.7 

4.5

2.7 

2.7 

2.9

1.9

Sodium 

(Na)

5.0 

4.6 

4.8 

4.9 

4.8

2.5 

3.2 

2.6 

5.0 

4.5 

5.2

Potassium 

(K)

1.3 

1.2 

1.3 

1.1

.9

.9 

.7 

.6

1.7

Bicarbonate 

(HCO,)

72 

68 

69 

75 

64

35 

48 

40 

67 

62 

69

Sulfate 

(SO,)

2.9 

2.9

Chloride 

(Cl)

0.7 

.2 

6.0 

1.6 

2.2

.6 

.9 

.5 

1.3 

1.7 

1.7

Fluoride 

(F)

0.0 

.0

Nitrate 

(NO,)

0.1 

.3

Boron 

(B)

0.02 

.02 

.09 

.02 

.02

.05 

.00 

.00 

.11 

.01 

.00
SACRAMENTO RIVER BASIN

SACRAMENTO RIVER BASIN Continued

FEATHER RIVER NEAR OROVILLE, CALIF.--Continued

Temperature (°F) of water, water year October 1956 to September 

/Once-daily measurement, generally between 3 p.m. and 9 p.

327

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

Average

Oct.

a 63

~

--

..

58

..

--

..

--

--

--

--

--

Nov.

..

54

..

bSO

b49

--

b48

--

..

..

b46

b44

50

b47

46

45

"

Dec.

46 

43

44

42

40

a 37

b41

41

44

..

42

"

41

41

40

42

Jan.

40

--

--

41

b38

a3S

..

42

43

43

44

44

42

--

41

41

b40

a 40

41

42

Feb.

b38

42

40

b42

47

..

44

a 47

44

..

b49

a42

48

48

47

46

47

47

47 

48

--

"

Mar.

47 

48

47

47

49

49

49

47

48

48

46

b46

45

47

48

50

49

48

48

51

b52

52

COa«3

50

Apr.

53

--

55

a51

54

..

51

52

54

b52

50

51

50

50

a 51

..

53

56

--

58

55

May

55

54

57

b58

b55

56

..

53

--

--

52

a 54

51

b49

bSO

55

57

~

--

b53

64

June

67

--

..

b62

65

--

..

- 

--

--

--

July

..

-

a 69

--

~

..

--

b74

--

--

71

"

73

Aug.

..

77

"

--

57

68

a 67

68

"

68

68

69

"

a 66

--

Sept.

69

--

b69

71

69

68

b65

67

68

65

65

a Measurement between 

b Measurement between

12 m. and 3 p.m. 

6 a.m. and 12 m.
328 PACIFIC SLOPE BASINS IN CALIFORNIA 

SACRAMENTO RIVER BASIN Continued 

FEATHER RIVER NEAR OROVILLE, CALIF. Continued 

Suspended sediment, November 1956 to September 1957

Day

1......

2. .....

3. .....

4. .....

5. .....

6. .....

8. ..... 

9. .....

10. .....

12. .....

14...... 

15......

16. .....

17. .....

20......

23......

24...... 

25......

26. .....

27. .....

29. .....

31...... 

Total.

L..... 

2...... 

3...... 

4...... 

5......

&..... 

9......

ia ..... 

11......

13. ..... 

14. ..... 

15. .....

Ifi

19......

2a .....

22...... 

23...... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

Mean 

discharge 

(cfs)

Suspended sediment

Mean 

concentration 

(ppm)

Tons 

per

day

January

2,170 

1,950 

2,200 

2,050 

1,530

1,570 

1,760 

2,130 

2,550 

2,120

2,030 

3,050 

5,290 

3,980 

3,340

3,050 

2,920 

2,850 

2,810 

3,630

3,130 

2,860 

2,770 

2,570 

2,610

2,630 

2,330 

2,290 

2,340 

2,330 

2,410

81,250

3

3 

5

11 

139 

30 

12

12

8

11

7 

6

4 

5

--

} "

} '

I 28

91 

82,180 

322 

108

99

\ -

I 93

\ '

V 32

3,841

November

Mean 

discharge 

(cfs)

4,090 

3,660 

3,670 

3,460 

3,250

3,510 

3,860 

3,850 

3,820 

3,750

3,750 

3,810 

3,790 

3,780 

3,590

3,380 

3,180 

3,090 

3,090 

3,060

3,040 

3,030 

3,000 

2,820 

2,350

2,180 

2,130 

2,260 

2,320 

2,340

96,910

Suspended sediment

Mean 

concentration 

(ppm)

15 

12

8 

7

5 

5

7 

8

6

4

--

Tons 

per 

day

166 

V 119

L 79

}'

{. e44 

I 58

f:

1,842

February

2,400 

2,610 

2,340 

2,130 

2,020

2,060 

2,140 

2,670 

2,620 

2,130

2,430 

2,520 

2,910 

3,270 

3,450

3,780 

2,970 

4,000 

4,180 

4,540

5,090 

6,020 

14,900 

59,000 

56, 900

42, 100 

31,900 

19, 700

292, 780

6 

6

8 

9

7

8 

12

17

17 

30

44 

50 

47 

1,680 

696

508 

389 

153

I 37

> 51

106

y no

a 370

605 

813 

s 25, 800 

s 282, 000 

sill, 000

s 60, 700 

s 34, 700 

s8,360

525,897

December

Mean 

discharge 

(cfs)

2,320 

1,710 

2,440 

2,310 

2,460

2,440 

2,160 

2,140 

1,740 

1,900

2,200 

2,320 

2,370 

2,370 

2,350

2,290 

2,310 

2,370 

2,700 

2,670

2,370 

2,250 

1,960 

2,020 

1,910

2,090 

1,980 

1,820 

2,010 

1,960 

2,250

68, 190

Suspended sediment

Mean 

concentration 

(ppm)

4 

4 

6 

9

3 

3 

3

3

5 

3

3 

"5

"

Tons 

per 

day

1 -

! 

> 19

1-

> 17

. 28

783

March

14,600 

12,700 

11,600 

12,500 

19,500

19, 300 

15,500 

13,300 

14, 300 

12,400

10, 700 

12,300 

10,900 

9,480 

9,540

9,940 

8,910 

7,620 

6,860 

6,600

6,600 

6,350 

5,810 

5,530 

5,390

5,270 

5,190 

5,240 

5,510 

6,610 

6.510

302, 560

50 

36 

33 

45 

150

135 

60 

45 

45 

32

25 

21 

18 

16 

30

25 

16 

12 

9 

10

12 

12 

10 

10 

10

9

9 

11 

18

-

1,970 

1,230 

a 1,000 

1,520 

7,900

7,030 

2,510 

1,620 

1,740 

1,070

722 

697 

a 530 

410 

773

671 

385 

a 250 

167 

alSO

214 

206 

a 160 

149 

146

I 130

a 200 

316

34, 286

e Estimated

s Computed by subdividing day.

a Computed from estimated concentration graph.
SACRAMENTO RIVER BASIN

SACRAMENTO RIVER BASIN Continued

FEATHER RIVER NEAR OROVILLE, CALIF.--Continued

Suspended sediment, November 1956 to September 1957--Continued

329

Day

1......

2. .....

3. .....

4. .....

5. .....

6. .....

7, .....

8......

9. .....

10. ..... 

11......

12. ..... 

13. ..... 

14. ..... 

15......

16......

17. .....

18......

19. .....

20......

22. .....

23...... 

24...... 

25. .....

26. .....

28. ..... 

29. .....

30...... 

31...... 

Total.

1..... 

2...... 

3...... 

4...... 

5......

6. .....

&..... 

9. ..... 

10. .....

11. ..... 

12. ..... 

13...... 

14. ..... 

11 .....

16. .....

18. .....

20. .....

22. ..... 

23. ..... 

24. ..... 

21 .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

April

Mean 

discharge 

(cfs)

5,860 

5,450 

5,350 

5,420 

5,470

5,530 

5,330 

5,460 

5,110 

5,150

5,120 

5,030 

4,950 

8,800 

8,150

6,140 

6,980 

7,390 

6,380 

5,850

5,700 

6,230 

6,480 

5,830 

5,720

5,280 

5,260 

5,300 

5,420 

6,270

176,410

Suspended sediment

Mean 

concentration 

(ppm)

12 

6

7 

6

11

9 

8 

48 

27

19 

16 

15 

13 

8

8

7 

7

5 

8

-

Tons 

per

day

i 180 

" 93

152 

122 

allO 

si, 250 

594

315 

302 

299 

224 

a 130

> 120

> 86 

135

5,768

July

2,430 

2,410 

2,380 

2,380 

2,490

2,310 

2,260 

2,220 

2,140 

2,260

2,280 

2,110 

2,090 

2,080 

2,150

2,290 

2,190 

2,120 

2,150 

2,270

2,260 

2,260 

2,290 

2,290 

2,230

2,190 

2,160 

2,080 

2,070 

2,070 

2,070

68,980

7 

5 

5

5 

5

5 

4 

4

9 

3

6 

6

7

-

} -

31

}-

^ .

}'

> 37

989

May

Mean 

discharge 

(cfs)

6,740 

8,190 

7,610 

7,050 

6,980

6,970 

6,460 

6,660 

7,110 

5,950

5,260 

5,060 

4,920 

5,080 

4,860

4,200 

4,330 

21,300 

24,600 

17,800

14,600 

12,400 

10, 500 

9,650 

8,940

7,860 

7,710 

7,230 

6,810 

6,560 

6,400

265,790

Suspended sediment

Mean 

concen - 

tration 

(ppm)

9 

28 

19 

8 

6

9 

10

11

12 

15 

458 

78 

46

31 

32 

23 

18 

17

15 

13 

11

9

-

Tons 

per 

day

a 160 

619 

390 

alSO

I 120 

L 170

I 150

136 

alSO 

s 33, 300 

s 5, 330 

a 2, 200

1,220 

1,070 

a 650 

469 

a 410

a 320

a 270

I 170

49, 174

August

2,060 

2,050 

2,020 

2,030 

2,030

2,010 

2,020 

2,070 

2,140 

2,130

2,100 

2,000 

1,960 

1,940 

1,940

1,960 

1,970 

1,920 

1,920 

1,920

1,950 

1,940 

1,890 

1,860 

1,850

1,900 

1,990 

1,910 

1,850 

1,920 

1,900

61, 150

Total discharge for period November to September (cf 

Total load for period November to September (tons) . .

7

5 

6

4 

5

5

5

7

) 

}' 

} 

26

}-

899

June

Mean 

discharge 

(cfs)

6,340 

6,040 

5,420 

5,160 

5,010

4,880 

4,710 

4,590 

4,520 

4,630

4,840 

4,590 

4,240 

3,930 

3,790

3,250 

3,590 

3,540 

3,220 

2,850

3,140 

3,030 

2,750 

2,890 

2,910

2,690 

2,550 

2,550 

2,520 

2,460

116,630

Suspended sediment

Mean 

concentration 

(ppm)

8 

7

7

7 

7 

5

6

8 

5 

6

5 

5

--

Tons 

per 

day

a 140 

114

e94

1 82 

51

}"

L 50

}.:

2,066

September

1,870 

1,860 

1,940 

2,020 

1,920

1,970 

2,030 

2,430 

2,300 

1,920

2,030 

2,370 

2,340 

2,610 

2,700

2,720 

2,780 

2,710 

2,750 

2,660

2,620 

2,590 

2,460 

2,310 

2,110

1,970 

3,190 

3,150 

2,460 

2,590

71, 380

5

4

6

9

10 

6 

16 

14 

12

8

31

13 

12

> 26

}'

73 

120 

a 120 

104 

a86

}'

s 300 

e!80 

a86 

84

2,015

, 602, 030 

627, 560

e Estimated.

s Computed by subdividing day.

a Computed from estimated concentration graph.
SACRAMENTO RIVER BASIN Continued 

FEATHER RIVER NEAR OROVILLE, CALIF. Continue

Particle-size analyses of suspended sediment, November 1956 to Sep

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, in 

Date 

of

collection

Feb. 23, 1957....

Time

5:10 p.m. 

6:00 p.m. 

9:30 a.m. 

4:30 p.m.

Discharge 

(cfs)

21,300 

82,700 

65, 200 

18, 500

Water 

temperature 

(°F)

47 

46 

47 

69

Suspended sedim

Concentration 

of sample 

(ppm)

823 

2,200 

754 

127

Concentration 

of suspension 

analyzed 

(ppm)

660 

908 

445 

1,300

Percent finer 

0.002 0.004

14 

9 

16 

31

0.008 0.016

22 

15 

20 

46

0
SACRAMENTO RIVER BASIN Continued 

SOUTH HONCUT CREEK NEAR BANGOR, CALI

LOCATION. At gaging station 2.3 miles southeast of Bangor, Butte County, and 3.3 miles upstream 

DRAINAGE AREA. 30.5 square miles.

RECORDS AVAILABLE. Chemical analyses: November 1955 to July 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 15, 1956.....

Jan. 10, 1957 ....

July 8 ............

Discharge 

(cfs)

0.1 

1.5 

2.3 

2.1 

5.0

36 

6.8 

5.6 

3.9 

0

Silica 

(SiOj)

27

Iron 

(Fe)

0.03

Calcium 

(Ca)

14 

15 

12 

9.6 

11

9.8 

12 

13 

14

Magnesium 

(Mg)

6.1 

6.6 

6.1 

5.4 

7.2

4.9 

5.6 

5.7 

5.6

Sodium 

(Na)

26 

16 

13 

10 

12

5.7 

9.6 

11 

11 

23

Potassium 

(K)

0.3 

.5 

.4 

.1 

.2

.2 

.2 

.4 

.3

Bicarbonate 

(HCO,)

77 

83 

74 

60 

70

58 

76 

80 

84 

125

Sulfate 

(SO,)

7.3

Chloride 

(Cl)

15 

9.5 

7.2 

4.0 

6.5

3.0 

4.5 

5.3 

4.2 

16

Fluoride 

(F)

0.1

Nitrate 

(NO,)

0.1

Boron 

(B)

0.14 

.07 

.00 

.03 

.03

.02 

.0

.0

.1

.14
SACRAMENTO RIVER BASIN Continued

YUBA RIVER NEAR SMARTVILLE, CALIF.

LOCATION. About 0.5 mile downstream from bridge on State Highway 20, 2.3 miles northwest of Smar

Englebright Dam, Yuba County.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Discharge records for gaging station at Englebright Dam and Deer Creek near Smartville 

of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 15, 1956....

Jan. 10, 1957 ....

Sept. 16.........

Mean 

discharge 

(cfs)

633 

609 

640 

553 

687 

6,430

2,350 

4,530 

3,350 

725 

676 

505

Silica 

(SiOa)

13 

19

Iron 

(Fe)

0.03 

.00

Calcium 

(Ca)

16 

12 

13 

14 

13 

5.2

8.8 

8.7 

7.7

15

Magnesium 

(Mg)

3.4 

4.1 

4.3 

3.6 

3.4 

3.4

2.8 

1.7 

.7

3.3

Sodium 

(Na)

3.7 

2.8 

2.9 

3.1 

3.3 

1.4

2.1 

1.9 

1.9 

2.2 

3.2 

3.8

Potassium 

(K)

0.9 

.7 

.8 

.6 

.5 

.7

.4 

.4 

.4

1.1

Bicarbonate 

(HCO,)

70 

56 

63 

62 

57 

28

40 

35 

25 

34 

59 

65

Sulfate 

(SO,)

2.3 

4.8

Chloride 

(Cl)

1.2 

1.8 

1.0 

1.2 

2.8 

.5

.4 

1.5 

.9 

.7 

1.5 

2.6

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

0.0 

.2

Boron 

(B)

0.00 

.00 

.09 

.00 

.00 

.02

.00 

.00 

.11 

.09 

.00 

.00
SACRAMENTO RIVER BASIN--Continued 

YUBA RIVER AT MARYSVILLE, CALIF.

LOCATION (revised).--On Simpson Lane Bridge in Marysville, Yuba County, 800 feet upstream from g

DRAINAGE AREA. 1,340 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 19

Date of collection

Oct. 15, 1956....

Jan. 10, 1957 ....

Apr. 8 ..........

July 8 ..........

Sept. 16 .........

Discharge 

(cfs)

a425 

542 

554 

650 

788 

5,760

2,510 

3,410 

3,330 

a310 

258 

267

Silica 

(SiO,)

14 

21

Iron 

(Fe)

0.01 

.01

Calcium 

(Ca)

16 

13 

13 

14 

13 

5.2

8.8 

8.7

7.4

14

Magnesium 

(Mg)

.2 

.3 

.5 

.1 

.3 

3.6

2.6 

1.9 

1.3

5.1

Sodium 

(Na)

3.7 

2.8 

3.2 

3.1 

3.6 

1.5

2.0 

2.4 

1.7 

2.4 

3.2 

3.8

Potassium 

(K)

0.7 

.7 

.8 

.5 

.5 

.7

.4 

.4 

1.0

1.3

Bicarbonate 

(HCO,)

73 

61 

66 

60 

58 

29

41 

37 

25 

41 

57 

64

Sulfate 

(SO,)

2.9 

11

Chloride 

(Cl)

1.3 

1.8 

1.0 

1.5 

2.3 

.5

.3 

1.0 

2.2 

.8 

1.0 

1.5

Fluoride 

(F)

0.1 

.1

Nitrate 

(NO,)

0.0 

.1

Boron 

(B)

0.00 

.00 

.04 

.00 

.00 

.02

.00 

.00 

.06 

.11 

.00 

.00

a Dally mean discharge (cfs).
SACRAMENTO RIVER BASIN Continued

BEAR RIVER NEAR WHEATLAND, .CALIF.

LOCATION. Near gaging station on downstream side of bridge on U. S. Highway 99E, 1 mile southeast 

from Rock Creek.

DRAINAGE AREA. 295 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 15, 1956 ....

Jan. 10, 1957..... 

Feb. 13 .........

Sept. 16 .........

Discharge 

(els)

96 

106 

98 

65 

132

559 

189 

154 

4.6 

2.6 

5.1

Silica 

(Si02)

"

12 

20

Iron 

(Fe)

"

0.02 

.00

Calcium 

(Ca)

25 

13 

15 

16 

13

11 

10

31

Magnesium 

(Mg)

10 

4.4 

5.0 

5.4 

5.7

3.9 

3.4

15

Sodium 

(Na)

8.2 

3.6 

4.0 

4.0 

4.2

2 ft

3.7 

2.5 

5.3 

6.8 

7.6

Potassium 

(K)

1.6 

.8 

1.0 

.5 

.7

.3 

.6

1.4

Bicarbonate 

(HCO.)

Ill

57 

63 

67 

57

24 

50 

38 

130 

138 

142

Sulfate 

(S04 )

7.3 

26

Chloride 

(Cl)

10 

4.0 

4.5 

4.8 

4.5

1.5 

3.0 

2.8 

5.0 

7.0 

9.7

Fluoride 

(F)

0.2 

.0

Nitrate 

(NO,)

0.3 

1.1

Boron 

(B)

0.00 

.00 

.00 

.01 

.00

.08 

.02 

.03 

.11 

.00 

.00
SACRAMENTO RIVER BASIN Continued 

FEATHER RIVER AT NICOLAUS, CALIF.

LOCATION .(revised). At gaging station at Nicolaus, Sutter County, 0.3 miles downstream from old h

River. 

RECORDS AVAILABLE.--Chemical analyses: March 1951 to September 1957.

Water temperatures: March 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 129 ppm Oct. 1-3; minimum, 53 ppm May 6.

Hardness: Maximum, 94 ppm Oct 1-3; minimum, 24 ppm Mar. 1-5.

Specific conductance: Maximum daily, 209 micromhos Oct 5; minimum daily, 62.3 micromhos May 20.

Water temperatures: Maximum, 79°F July 9; minimum, 37°F Jan. 27. 

EXTREMES, 1951-57. Dissolved solids (1951-55, 1956-57): Maximum, 129 ppm Oct. 1-3, 1956; minimum

Hardness (1951-55, 1956-57): Maximum, 114 ppm June 21, 1954; minimum, 22 ppm June 1-3, 8, 10, 1

Specific conductance (1951-55, 1956-57): Maximum daily, 245 micromhos June 21, 1954; minimum da

Water temperatures: Maximum, 82°F July 28, 1954; minimum, 37°F Jan. 27, 1957.

REMARKS. Records of specific conductance of daily samples available in district office at Sacrame

October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-3, 1956...

Nov. 1-2 ........

Jan. 1-6, 1957...

Feb. 24, 25 ..... 

Feb. 26-28 ......

Mar. 6-8........

Mar. 9-31 .......

Mean 

discharge 

(cfs)

2,610 

2,620 

3,088 

2,740 

6,240 

4,236 

3,243 

3,400

2,831 

2,630 

2,793 

2,802 

2,525 

4,052 

3,210

3,291 

4,621 

3,520 

43,400 

67,470 

27, 420 

36,000 

15,140 

23,000

Silica 

(Si02)

..

Iron 

(Fe)

-

Calcium 

(Ca)

24 

18 

15 

12 

10 

12 

14 

11

14 

12 

17 

15 

19 

13 

14

15 

13 

12 

9.6 

6.6 

8.0 

8.8 

9.2 

6.4

Magnesium 

(Mg)

8.3 

5.6 

5.7 

5.1 

3.6 

4.4 

4.1 

4.7

4.6 

6.1 

5.5 

5.0 

7.4 

4.5 

4.6

5.0 

4.5 

4.9 

3.4 

2.3 

1.0 

5.4 

3.2 

3.6

Sodium 

(Na)

4.8 

5.5 

5.2 

4.9 

4.1 

5.3 

5.1 

4.3

5.3 

4.8 

5.1 

4.9 

4.6 

4.6 

5.8

4.9 

4.8 

5.4 

2.9 

2.3 

2.9 

3.6 

2.9 

2.4

Potassium 

(K)

1.1

1.1 

1.3

1.0 

1.0

.9

Bicarbonate 

(HCO,)

118 

89 

79 

71 

51 

64 

73 

68

73 

73 

84 

76 

100 

65 

74

73 

66 

67 

41 

30 

37 

38 

40 

36

Sulfate 

(SO,)

"

"

-

"

Chloride 

(Cl)

Fluoride 

(F)

..

--

--

;;

-"

Nitrate 

(NO,)

"

-"-

--

"

::

--

Boron 

(B)

a Not included for computation of weighted averages.
SACRAMENTO RIVER BASIN Continued

FEATHER RIVER AT NICOLAUS, CALIF. Contin

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Apr. 1-14, 1957..

Apr. 15-20 ......

May 6a .. ........

May 22-31 .......

Sept 7

Sept. 16a

Sept. 16-30......

Weighted average0

Mean 

discharge 

(cfs)

8,601 

8,360 

10, 760 

7,750 

8,606 

8,700 

6,448 

36,700 

17, 290

9,824 

5,429 

6,610 

2,632 

1,753 

1,463 

1,190 

832 

1,000

695 

807 

664 

622 

797 

912 

1,414 

2,090 

2,434

6,388

Silica 

(SiOa)

15 

17

"

Iron 

(Fe)

0.06 

.07

.00

"

Calcium 

(Ca)

8.8 

8.8 

9.2 

10 

9.6 

8.6 

9.2 

7.6 

7.6

8.6 

10 

8.7 

22 

19 

12 

22 

14

15

15 

15 

14 

16 

14 

14 

11

10

Magnesium 

(Mg)

3.9 

3.4 

3.2 

3.2 

3.4 

2 3 

3.4 

2.4 

3.2

3.4 

3.2 

3.0 

6.6 

6.9 

5.8 

10 

6.6

6.0

5.5 

6.9 

6.3 

6.6 

6.1 

4.1 

6.4

3.7

Sodium 

(Na)

3.2 

3.1 

3.1 

3.2 

3.2 

2. 8 

3.3 

2.2 

2.5

3.0 

3.4 

3.0 

4.6 

5.0 

5.6 

5.3 

6.5 

5.7

5.8 

5.4 

5.8 

6.2 

7.6 

8.5 

5.6 

5.5 

6.2

3.5

Potassium 

(K)

0.8 

.5

.6 

2.1

-

Bicarbonate 

(HCO,)

44 

44 

43 

46 

45 

44 

45 

34 

38

40 

44 

39 

102 

98 

72 

122 

78 

84

80 

76 

78 

84 

80 

80 

70 

72 

74

49

Sulfate 

(SO,)

-

1.0

"-

2.9

"

Chloride 

(Cl)

.5

2.4

--

Fluoride 

(F)

--

0.0

"

.0

--

Nitrate 

(NO,)

--

0.3

"

1.6

--

Boron 

(B)

.08

.00

"

a Not included for computation of weighted averages.

b Calculated from determined constituents.

c Represents 100 percent of runoff for water year October 1956 to September 1957.

d Includes estimates for missing data.
SACRAMENTO RIVER BASIN

SACRAMENTO RIVER BASIN Continued

FEATHER RIVER AT NICOLAUS, CALIF.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 7 a. mj

337

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

Average

Oct.

66

65

66

65

65

65

66

65

63

64

60

57

68

59

58

60

59

60

58

59

59

59

55

60

51

54

51

50

50

50

52

59

Nov.

50

50

50

50

50

50

52

52

52

53

53

52

52

48

48

48

48

48

48

44

43

44

45

44

45

42

45

43

45

45

--

48

Dec.

44

44

44

48

45

40

41

40

40

41

44

44

45

44

44

43

44

43

44

42

41

39

40

40

40

40

40

39

41

40

40

42

Jan.

40

40

40

40

40

40

42

43

40

39

40

44

44

45

45

44

42

42

43

42

42

41

41

41

40

39

37

40

38

38

38

41

Feb.

39

40

40

39

40

42

43

46

42

43

45

46

48

48

43

49

49

48

49

49

48

48

50

50

49

50

49

49

--

46

Mar.

50

50

49

50

50

50

51

50

50

50

51

54

48

48

49

47

48

48

48

50

49

48

48

49

50

50

51

53

53

51

52

50

Apr.

50

50

53

54

55

55

53

54

54

59

54

54

55

55

55

58

53

51

52

52

52

53

53

55

55

56

57

59

65

60

--

55

May

61

57

57

58

60

61

60

59

58

59

58

58

57

58

60

55

60

55

54

53

54

54

56

57

59

61

62

61

61

62

58

June

63

64

64

68

65

65

65

65

64

61

62

59

66

63

65

65

65

67

66

66

68

70

73

74

74

75

76

75

71

71

--

67

July

68

69

73

73

72

78

74

66

79

75

75

76

73

74

73

76

77

72

72

72

71

71

73

75

76

76

76

78

75

74

73

74

Aug.

77

78

77

72

69

71

72

70

72

72

73

74

75

75

71

72

75

74

74

74

73

74

75

75

71

69

68

68

64

66

69

72

Sept.

70

72

73

73

72

72

74

75

74

71

68

68

68

68

67

66

67

65

65

65

65

66

66

65

65

65

65

66

64

63

~

68
SACRAMENTO RIVER BASIN Continued 

AMERICAN RIVER AT FAIR OAKS, CALIF.

LOCATION. In San Juan Grant at old highway bridge just downstream from gaging station, 1,500 feet 

Sacramento County, 2.6 miles downstream from Nimbus Dam, and 10 miles downstream from South Fork

DRAINAGE AREA. 1,921 square miles. 

RECORDS AVAILABLE. Chemical analyses: January to December 1906, March 1951 to September 1957.

Water temperatures: March 1951 to September 1957. , 0 

EXTREMES, 1956-57.--Dissolved solids: Maximum, 50 ppm Feb. 25 to Mar. 4; 34 ppm June 1-11, June 18

Hardness: Maximum, 30 ppm Feb. 25 to Mar. 4; minimum, 18 ppm Sept. 11-20. naraness: maximum, ou ppm re". ^J LU raaj. . », UIJ.HJ.HIUJU, 4,0 yym uc(/i,. 4.4. -«.

Specific conductance: Maximum daily, 70.6 micromhos Feb. 23-24; minimum, 46.1 micromhos Sept. 4.

Water temperatures: Maximum, 68°F Oct. 6; minimum, 38°F Jan. 30, Sept. 21.

«rmnn.*»n 7l C 4 K ft m~~~1-.~J *~~14,Jn . M««4».11m QQ «MH Aim 11 _Ofl 1QKji. minimum 9Q titim .Tlln<3 1 1 O

Wait?** I CUIUC j; U L UJl CO i piaAJ-luuJU , u« A" wwu. w, UIAUA.IUMJM, w * WHU. ~«, »vtfb . * . 

EXTREMES 1951-57. Dissolved solids: Maximum, 83 ppm Aug. 11-20, 1954; minimum, 29 ppm June 1-10, 

Hardness- Maximum, 41 ppm Aug. 1 to Sept. 10, 1951, Nov. 21-30, 1952, Aug. 11-20, 1954; minimum, 

Specific conductance: Maximum daily, 112 micromhos Aug. 28, 1951; minimum daily 29.1 micromhos 

Water temperatures: Maximum, 81°F July 27, Aug. 3, 1954; minimum, 38'F Oct. 30-31, 1954, Jan. 30Water temperatures: Maximum, 81°F July 27, Aug. 3, 1954; minimum, 38'F Oct. 30-31, 1954, Jan. JO

REMARKS. Records of specific conductance of daily samples available in district office at Sacramen

October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to Se

Date of collection

Oct. 1-31, 1956 ..

Jan. 1-10, 1957 .. 

Jan. 11-20.......

Feb. 25-Mar. 4 . .

Apr. 27-30 ......

Mav Id 10

Mav 20-31 .......

Mean 

discharge 

(cfs)

1,342 

1,138 

2,060 

1,618 

1,632

1,562 

981 

927 

1,248 

5,019 

18,400 

4,383

2,401 

3,614 

4,870 

1,932 

4,160 

9.312

Silica 

(Si02)

Iron 

(Fe)

0.01

Calcium 

(Ca)

6.0 

6.0 

6.8 

6.8 

7.2

7.2 

7.0 

7.4 

7.6 

7.4 

6.6 

6.6

6.8 

6.5 

6.7 

6.8 

5.2 

5.8

Magnesium 

(Mg)

2.4 

2.4 

1.7 

1.9 

1.5

1.7 

1.8 

2.1 

2.2 

2.8 

2.1 

2.1

1.6 

1.6 

1.3 

1.2 

2.2 

1.1

Sodium 

(Na)

2.1 

2.4 

2.4 

2.4 

2.4

2.8 

2.7 

2.7 

2.5 

2.4 

2.1 

2.1

2.7 

2.3 

2.4 

2.4 

2.4 

2.9

Potassium 

(K)

Bicarbonate 

(HCO,)

35 

37 

28 

29 

30

29 

29 

31 

34 

30 

27 

26

28 

27 

26 

28 

26 

22

Sulfate 

(SOJ

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Boron 

(B)

P

m
June 1-11, 1957 ..

Weighted average a

6,307

2,792

2,925

3,321

2,548

2,376

3,033

--

.00

--

4.8

5.0

5.0

4.4

5.6

6.4

4.8

2.8

6.0

1.7

1.7

1.7

1.7

1.7

1.9

2.7

1.8

2.3

2.4

2.4

2.1

2.5

2.3

2.4

2.4

1.0

24 

25

24

23

23

26

25

24

22

22

26

4.8 1.0 0.1 0.1 0.05

a Represents 100 percent of runoff for water year October 1956 to September 1957.
340 PACIFIC SLOPE BASINS IN CALIFORNIA

SACRAMENTO RIVER BASIN Continued

AMERICAN RIVER AT FAIR OAKS, CALIF. Continued

Temperature (°F) of water, water year October 1956 to September 19S7 

/Once-daily measurement, generally between 7 a. m. and 1 p. mj

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

29

30

31

Average

Oct.

66

66

67

66

67

68

66

66

66

66

65

65

65

66

66

64

64

65

64

66

66

65

63

61

61

63

61

61

61

60

60

64

Nov.

58

59

60

60

60

60

63

60

61

61

60

60

59

56

56

59

58

57

56

55

56

57

55

55

56

55

55

54

54

49

--

57

Dec.

54

58

58

53

53

52

50

52

50

50

51

50

50

50

51

51

50

50

49

48

46

46

46

46

46

46

48

48

49

46

50

Jan.

47

46

46

45

45

46

45

46

46

45

45

46

46

48

48

46

46

45

46

45

45

46

45

45

45

44

45

42

44

38

43

45

Feb.

43

44

43

43

45

_

45

44

44

44

45

45

45

46

45

45

45

45

45

45

45

45

45

45

45

45

45

44

45

Mar.

44

44

44

44

44

45

45

45

45

45

45

44

44

45

44

45

45

45

45

45

45

45

45

45

45

45

45

45

46

45

Apr.

45

45

46

47

46

46

45

45

45

45

45

45

47

46

46

45

45

45

44

44

46

44

45

45

45

45

46

46

45

45

45

May

45

45

45

48

49

45

47

45

46

45

48

48

46

45

45

45

45

45

45

45

45

45

45

46

45

45

45

44

44

45

45

46

June

46

45

44

45

45

45

45

44

44

43

44

45

45

45

45

45

45

46

45

45

46

46

47

46

52

46

45

45

46

46

45

July

45

45

45

46

46

_

47

45

45

44

46

46

45

46

45

45

45

45

45

45

45

48

44

43

44

45

45

45

44

44

44

45

Aug.

45

45

45

45

44

44

44

45

45

45

45

48

44

44

43

45

45

43

43

43

43

44

45

43

43

43

43

43

43

45

44

Sept.

45

44

43

43

43

44

44

45

46

43

43

43

43

43

44

43

43

53

43

45

38

44

43

43

44

43

45

45

43

43

43
SACRAMENTO RIVER BASIN Continued

AMERICAN RIVER AT SACRAMENTO, CALIF.

LOCATION. At gaging station at H Street Bridge, Just east of Sacramento, Sacramento County, and 

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, In parts per million, water year October 195

Date of collection

Oct. 18, 1956.....

Jan. 11, 1957.....

May 9

Sect. 23 ..........

Mean 

discharge 

(cfs)

1,280 

2,170 

1,550 

940 

1,410 

6,000

4,070 

1,970 

2,750 

2,890 

3,290 

2.480

Silica 

(S10.)

--

12

15

Iron 

(Fe)

..

0.04 

.01

Calcium 

(Ca)

6.4 

7.0 

6.4

6.0

8.1 

6.4 

5.6

5.9

Magnesium 

(Mg)

1.1 

2.1 

2.4

2.7

2.1 

1.5 

1.2

1.1

Sodium 

(Na)

2.2 

2.0 

2.3 

2 5

1.8

2.0 

2.1 

2.2 

2.0 

2.0 

1.8

Potassium 

(K)

1.0 

.8 

1.0 

.8 

.8 

.8

.6 

.7 

.9

.9

Bicarbonate 

(HCO,)

27 

35 

31 

30 

33 

26

32 

27 

24 

23 

22 

22

Sulfate 

(SO,)

2.9 

2.9

Chlorids 

(Cl)

0.5 

1.9 

1.5 

1.5 

2.0 

1.5

1.3 

2.1 

.5 

.5 

2.0 

1.9

Fluoride 

(F)

0.0 

.0

Nitrate 

(NO,)

0.0 

.2

Boron 

(B)

0.00 

.00 

.08 

.00 

.04 

.08

.00 

.02 

.09 

.17 

.05 

.00
SACRAMENTO RIVER BASIN Continued 

SACRAMENTO RIVER AT SACRAMENTO, CALIF.

LOCATION (revised). At Tower Bridge, 0.6 mile downstream from gaging station at Sacramento, Sacrame

from confluence with American River. 

RECORDS AVAILABLE,--Chemical analyses: October 1952 to September 1957.

Water temperatures: May 1955 to September 1957.

Sediment records: October 1956 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 156 ppm Sept. 11-19; minimum, 41 ppm Feb. 26-28.

Hardness: Maximum, 74 ppm Sept. 1-10, 11-19; minimum, 25 ppm Feb. 26-28.

Specific conductance: Maximum daily, 247 micromhos Sept. 7; minimum daily, 59.9 micromhos Feb. 2

Water temperatures: Maximum, 78"F June 21; minimum, 39'F Jan. 30, 31, Feb. 1. 

EXTREMES, 1954-57.--Dissolved solids (1955-57): Maximum, 156 ppm Sept. 11-19, 1957; minimum, 41 pp

Hardness (1955-57): Maximum, 74 ppm Sept. 1-10, 11-19, 1957; minimum, 22 ppm Dec. 22-31, 1955.

Specific conductance (1955-57): Maximum daily, 247 micromhos Sept. 7, 1957; minimum daily, 47.2 

Water temperatures: Maximum, 78°F June 21, 1957; minimum, 39°F Jan. 30, 31, Feb. 1, 1957.

REMARKS. Records of specific conductance of daily samples available in district office at Sacramen

Capitol Avenue (Tower) Bridge 0.6 mile below gaging station. Records of discharge for water yea

appreciable inflow between gaging station and sampling point except during periods of high local 

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 1-2, 4, 6, 8,

Oct. 3,5, 7, 9.... 

Oct. 11, 13, 15,

Oct. 12, 14, 16, 19

Oct. 21-31 .......

Jan. 1-10, 1957 . .

Jan. 27-31.......

Mean 

discharge 

(cfs)

12,550 

12,220

12,180 

12,200 

12,300 

12,530 

15,910 

14,540 

14,100 

13,340

12,560 

12,660 

12,700 

12,330 

10,590 

10,600 

13,500 

13,280 

10.500

Silica 

(SiO,)

24 

24

23 

22

22 

20 

20

24

26 

25

27 

25

24 

23 

24

Iron 

(Fe)

0.03 

.03

.02 

.02

.03 

.03 

.01

.00

.00 

.00

.00 

.00

.04 

.04 

.02

Calcium 

(Ca)

13 

12

12 

13 

14 

12 

11 

11 

12 

12

13 

13 

13 

13 

14 

15 

14 

14 

15

Magnesium 

(Mg)

7.2 

6.6

6.3 

6.7 

8.9 

6.3 

5.2 

6.0 

5.4 

5.6

5.5 

5.5 

6.4 

5.7 

6.6 

6.7 

7.1 

6.8 

7.4

Sodium 

(Na)

12 

8.7

7.9 

11 

12 

8.8 

7.6 

7.8 

7.8 

8.4

9.4 

9.2 

9.4 

9.5 

10 

12 

12 

11 

11

Potassium 

(K)

1.5 

1.5

1.2 

1.3 

1.3 

1.3 

1.3 

1.3 

1.3 

1.6

1.3 

1.4 

1.6 

1.4 

1.3 

1.3 

1.5 

1.4 

1.4

Bicarbonate 

(HCO,)

85 

79

77 

82 

86 

77 

70 

71 

73 

72

77 

76 

79 

77 

82 

90 

80 

77 

84

Sulfate 

(S04)

9.6 

7.1

5.8 

8.3

7.3 

5.8

6.5

6.7

6.7 

6.7

6.7 

5.8

9.6 

9.6 

8.6

Chloride 

(Cl)

7.8 

5.4

4.4 

6.5 

6.0 

5.4 

5.0 

5.0 

4.0 

5.5

5.0 

5.5 

5.0 

6.0 

6.5 

7.4 

8.0 

8.0 

8.5

Fluoride 

(F)

0.1 

.1

.0 

.1

.1 

.2 

.1

.1

.0 

.0

.0 

.2

.3 

.3 

.2

Nitrate 

(NO,)

0.8 

.7

.1 

.5

.3

is

.6

.5 

.6

.4 

.8

1.1 

1.2 

1.0

Boron 

(B)

0.02 

.12

.05 

.10 

.00 

.05 

.06 

.07 

.04 

.00

.00 

.02 

.08 

.00 

.12 

.07 

.10 

.15 

.08
Feb. 1-13, 1957.. 

Feb. 14-20.......

Feb. 24-25. ......

July 26-31. .......

9,945 

10,460

32,500

64,070

74,000

52,240

29,950

22,100

16,110

10,840

8,890

9,780

9.762

23 

23

21

17

11

17

19

20

23

21

21

23

24

21

23

22

23

24

23

.02 

.02

.12

.11

.08

.03

.04

.03

.01

.03

.03

15 

14

14

13

11

6.0

7.2

8.6

10

12

11

13

12

13

12

10

12

11

13

13

14

13

14

13

6.9 

6.3

6.7

6.4

4.0

2.4

3.3

4.6

5.4

5.7

6.4

2.8

4.6

6.8

6.8

6.4

6.3

7.8

7.1

11 

9.4

9.8

8.1

5.2

2.4

3.3

5.0

5.9

7.3

6.5

9.3

6.1

6.6

6.1

9.4

9.3

12

10

12

12

12

1.4 

1.4

1.2

1.2

1.1

.9

1.0

1.2

1.2

1.0

1.1

1.3

.9

1.1

1.5

1.6

1.3

1.8

1.2

1.8

1.6

1.8

1.6

83 

77

80

74

55

45

55

64

64

70

64

61

66

76

77

76

79

74

81

8.6 

7.7

5.8

3.8

1.9

2.9

3.8

5.8

7.7

12

3.8

9.6

13

6.3

9.4

11

10

9.0

7.5 

6.0

6.9

3.0

1.0

2.5

3.5

5.0

5.3

6.6

5.3

3.0

6.5

7.8

8.0

7.8

8.3

.2 

.2

.2

.2

.2

.2

.3

.3

.1

.1

.1

.1

.1

.1

.2

.0

.1

.1

.2

.1

.2

.2

.8 

.5

.5

.8

.7

.5

.8

.4

.4

.4

.3

.1

.9

.7

.6

.6

.04 

.04

.06

.06

.03

.11

.12

.12

.08

.00

.10

.10

.09

.02

.18

.14

.01

a Not included for computation of weighted averages.
SACRAMENTO RIVER BASIN Continued 

SACRAMENTO RIVER AT SACRAMENTO, CALIF. Contin

Chemical analyses, in parts per million, water year October 1956 to Septe

Date of collection

Aug. 1-2, 1957....

Aug 11-20 . .

Sept. 1-10 ........

Sept. 20-30 .......

Sept. 24 a ........

Weighted average b

Mean

discharge 

(cfs)

9,510 

9,511 

9,430 

9,839 

9,845 

10,550 

12,330 

13,630 

12,700

18,200

Silica 

(SiO.)

21 

24

24 

23 

24 

24 

23 

23

21

Iron 

(Fe)

0.01 

.01

.01 

.02 

.00 

.02 

.00 

.01

cO.04

Calcium 

(Ca)

8.8 

19

14 

15 

15 

14 

14 

13

12

Magnesium 

(Mg)

8.3 

5.0

8.0 

8.4 

8.9 

9.6 

7.1 

6.6

5.4

Sodium 

(Na)

13 

15 

15 

15 

16 

18 

17 

13 

11

8.8

Potassium 

(K)

1.7 

1.8

1.8 

1.8 

1.8 

1.8 

1.8 

1.5

1.4

Bicarbonate 

(HCO,)

82 

92 

82 

96 

100 

110 

104 

82 

60

67

Sulfate 

(SO,)

5.8 

9.6

11 

11 

5.8 

13 

15 

8.6

7.2

Chloride 

(Cl)

9.0 

13 

11 

11 

12 

14 

10 

9.5 

7.5

5.6

Fluoride 

(F)

0.1

.1

.1 

.1 

.1 

.1 

.0 

.0

0.2

Nitrate 

(NO,)

0.7 

.8

.7 

.6 

1.4 

.3 

1.1 

.2

0.6

Boron 

(B)

0.08 

.15 

.00 

.09 

.24 

.39 

.13 

.22 

.04

0.08

a Not included for computation of weighted averages.

b Represents 100 percent of runoff for water year October 1956 to September 1957.

c Includes estimates for missing data.
SACRAMENTO RIVER BASIN 

SACRAMENTO RIVER BASIN Continued 

SACRAMENTO RIVER AT SACRAMENTO, CALIF. Continued

Temperature (*F) of water, water year October 1956 to September 1957 

~ * Uy measurement at approximately 12:15 p.mj

345

Day

1

2

3

4

5

6

7

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

79

ft

31

Average

Oct.

65

65

65

65

64

65

64

65

65

64

64

61

60

60

60

61

60

61

59

59

59

59

57

56

55

55

54

54

54

61

Nov.

52

52

52

52

52

55

55

56

55

56

55

56

56

54

53

51

51

51

49

50

49

48

49

49

49

49

49

49

49

52

Dec.

49

48

48

48

49

46

45

44

45

46

47

47

47

48

48

48

48

46

46

46

46

"

46

46

42

43

45

44

46

Jan.

..

43

42

42

42

42

43

41

42

42

43

43

~

45

45

43

42

43

42

43

43

42

42

41

40

40

40

39

39

42

Feb.

39

40

41

40

41

41

42

43

43

44

45

46

47

49

49

50

50

50

50

50

_

60

50

50

44

48

48

--

46

Mar.

49

52

52

53

53

53

53

52

52

52

50

50

51

52

53

53

53

53

53

53

55

57

59

59

56

57

53

Apr.

56

59

59

61

61

60

59

60

60

60

61

61

58

57

55

56

56

57

58

58

60

61

60

61

62

63

64

59

May

64

63

62

63

64

64

64

63

64

62

63

63

62

62

62

64

63

63

60

56

57

57

58

59

60

62

65

65

64

64

62

June

67

67

68

68

68

68

68

67

67

_

69

69

68

68

68

69

70

70

78

72

73

74

74

74

74

74

73

72

70

July

70

70

70

74

74

74

73

74

74

72

73

74

70

70

71

71

72

70

69

72

_

69

71

72

73

72

72

72

70

70

70

72

Aug.

71

72

73

72

72

71

71

70

70

71

71

72

73

71

70

72

72

72

72

72

71

72

72

68

70

70

70

69

69

67

68

71

Sept.

70

70

71

73

73

73

"

71

70

70

70

69

68

68

67

67

67

68

68

68

68

67

_

66

66

65

65

69
346 PACIFIC SLOPE BASINS IN CALIFORNIA

SACRAMENTO RIVER BASIN Continued

SACRAMENTO RIVER AT SACRAMENTO, CALIF.--Continued

Suspended sediment, water year October 1956 to September 1957

Day

1......

2. .....

3. .....

4. .....

5. .....

8. .....

7. .....

8. .....

9. .....

10. .....

11......

12. .....

14. .....

15. .....

16. .....

17. ..... 

18. .....

20. .....

22. .....

24. ..... 

25. .....

27......

28. .....

30. .....

31......

Total.

2...... 

3...... 

4...... 

5......

8. .....

8......

10. .....

14. .....

18. .....

20. .....

22. ..... 

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

October

Mean 

discharge 

(cfs)

14,000 

13,100 

12,900 

12,400 

12,100

12,000 

12,000 

11,800 

11,900 

12,000

11,900 

12, 200 

12, 500 

12,400 

12, 500

12,300 

12,100 

12,200 

12,000 

11,900

11,800 

11,900 

12,000 

11,900 

12,200

12,400 

12,400 

12,700 

13,200 

13, 500 

13,800

384,000

Suspended sediment

Mean 

concentration 

(ppm)

" W

37

> (a) 

45

> (a)

30 

> (a)

--

Tons 

per 

day

1,100

1,250

1,300 

1,450 

1,200

1,070 

1,300

36,770

January

10,900 

10,900 

10,600 

10,500 

10,400

10,400 

10,300 

10,400 

10,600 

10,900

10,600 

10,200 

11,100 

13,200 

17,800

17,500 

15,400 

14,100 

12,800 

12,300

13,900 

14,700 

14,200 

13,100 

12,500

11,300 

11,100 

10,700 

10,400 

10, 200 

10.100

373,100

1"

14

}"

40

I (a)

110 

70 

42

47 

48

25

--

390 

389 

520

1,430 

3,900

4,190 

a 2, 400 

1,390

1 1,700 

V 780

40,139

November

discharge 

(cfs)

17,800 

17,900 

16,500 

15,900 

15,500

15,200 

14,900 

15,000 

15,100 

15,300

15,200 

14,900 

15,100 

14,600 

14,400

14,500 

14,600 

14,200 

14,000 

13,900

14,100 

13,900 

14,000 

13,800 

13,700

13,300 

12,900 

12,800 

12,400 

12,500

437,900

Suspended sediment

Mean 

concentration 

(ppm)

}'

48

r (a)

34

1"

30

- (a)

20 

/ (a)

-

Tons 

per 

day

2,300 

1,970 

1,600 

1,390 

1,200 

1,130

940

691 

640

41,341

February

10,100 

9,930 

10, 100 

10, 100 

10,000

9,900 

9,690 

9,620 

10,000 

9,910

10, 100 

9,880 

9,950 

9,940 

10, 100

10,200 

10, 500 

10,700 

10,700 

11,100

11,300 

12,900 

16,200 

23,100 

41,900

61,700 

64,600 

65,900

500, 120

21 

18

23 

21

18 

22 

38

r260

-

> 540

680

e2,000 

16,200 

e60,000

275,720

December

Mean 

discharge 

(cfs)

12,600 

12,600 

12,400 

12,100 

12,400

12,400 

12,800 

12,900 

12,800 

12,600

12,100 

12,500 

12,500 

12,900 

13,100

12,700 

12,600 

12,700 

12,700 

12,800

12,800 

12,800 

12,800 

13,000 

12,300

12,100 

12,000 

12,100 

11,900 

11,400 

12,400

387,800

Suspended sediment

Mean 

concentration 

(ppm)

(a)

1 "

r17

}'

22

> (a)

12

}"

13

-

Tons 

per 

day

630 

588

590 

578

630 

748

570

392 

400 

435

17,521

March

65, 200 

63,600 

61,900 

61,700 

71,000

83,200 

79,200 

72,300 

70,300 

65,000

61,700 

59,100 

57,300 

55,500 

52,800

50,600 

49,300 

47,800 

44,200 

44,100

41,600 

38, 400 

36, 600 

33,200 

31,800

27,800 

25,700 

25,600 

23,000 

22,500 

23,200

1,545,200

280 

190 

140 

121 

245

260 

180 

175 

175 

170

165 

160 

155 

150 

140

155 

145

175 

150

90 

81

--

49,300 

b 33, 000 

b 23, 000 

20, 200 

47,000

b 58, 000 

38,500 

b 34, 000 

33,200 

30,000

27,500 

b 26, 000 

24,000 

b 22, 000 

20,000

I 19,000 

S. 16,000

1 6,000

696,700

e Estimated.

a Concentrations computed on basis of infrequent samples.

b Computed from estimated concentration graph.
SACRAMENTO RIVER BASIN

SACRAMENTO RIVER BASIN Continued

SACRAMENTO RIVER AT SACRAMENTO, CALIF. Continued

Suspended sediment, water year October 1956 to September 1957--Continued

347

Day

1......

2. .....

3. .....

5. .....

7. .....

8. .....

9. .....

10. .....

11......

12. ..... 

13. .....

14. .....

15. .....

17. .....

19. .....

21......

25. .....

27. .....

28. .....

29. .....

30. .....

31......

Total.

1. ..... 

2...... 

3...... 

4...... 

5......

6. .....

8...... 

9. ..... 

10......

12. .....

14. ..... 

15......

19. ..... 

20. .....

22. ..... 

23. ..... 

24. ..... 

25. .....

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

April

Mean 

discharge 

(cfs)

23,300 

22, 900 

21,600 

20,800 

20,400

19,500 

19,300 

18,500 

18,000 

16, 900

16,800 

15,800 

15,100 

14,900 

17,600

22, 100 

21,200 

21,000 

23,000 

23,900

24,000 

24,600 

24,100 

23,800 

22,700

20,400 

18,700 

16,800 

16,300 

15,800

599, 800

Suspended sediment

Mean 

concentration 

(ppm)

80 

80

75 

70 

59

55

50 

48 

46

45 

40 

40 

45 

64

70 

51

51 

72

90 

89 

79 

81 

75

52 

51 

50 

40 

30

--

Tons 

per 

day

5,030 

b4,900 

4,370 

b3,900 

3,250

b2,900

2,500 

2,330 

2,100

2,040 

1,710 

bl,600 

1,810 

3,040

4,180 

b2,900

3,170 

4,650

5,830 

5,910 

5,140 

5,210 

4,600

2,860 

2,570 

2,270 

1,760 

1,280

99,610

July

9,380 

9,170 

9,240 

9,350 

9,260

9,460 

9,320 

9,140 

9,080 

9,090

8,890 

8,890 

8,730 

8,87" 

8,930

8,810 

9,030 

9,210 

9,250 

9,250

9,220 

9,780 

9,790 

9,790 

9,670

9,920 

9,680 

9,740 

9,720 

9,740 

9.800

289, 200

35 

40 

40 

37 

34

35 

34 

35 

25 

33

35 

35 

38 

40 

41

46 

38 

36 

38 

40

39 

37 

25 

32 

34

34 

26 

26 

31 

36 

38

..

Total discharge for year (cfsTotal load for year (tons) . . .

886 

990 

998 

934 

850

894 

856 

864 

613 

.810

840 

840 

896 

958 

989

1,090 

926 

895 

949 

999

971 

977 

661 

846 

888

911 

680 

684 

813 

947 

1.010

27,465

May

Mean 

discharge 

(cfs)

13,900 

14,300 

16, 100 

17, 500 

17,100

16,700 

17,200 

17,500 

17,900 

18,900

19,000 

18,800 

18,900 

20,500 

20,900

21,100 

21 , 000 

21,000 

34,000 

53,400

65,200 

63,300 

63,100 

59,100 

52,400

46,900 

42,400 

39, 800 

39,100 

37,600 

35.700

960, 300

Suspended sediment

Mean 

concentration 

(ppm)

32 

40 

45 

50 

50

49 

39 

40 

41 

58

65 

68 

68 

75 

65

60 

60 

62 

205 

272

221 

172 

137 

130 

94

97 

105 

92 

95 

91 

90

--

Tons 

per 

day

1,200 

b 1,500 

1,960 

2,360 

2,310

2,210 

1,810 

1,890 

1,980 

2,960

3,330 

3,450 

3,470 

4,150 

3,670

3,420 

b3,400 

3,520 

18,800 

39, 200

38,900 

29,400 

23,300 

20,700 

13,300

12,300 

12,000 

9,890 

10,000 

9,240 

8,680

294,300

August

9,560 

9,460 

9,310 

9,330 

9,570

9,630 

9,670 

9,480 

9,430 

9,670

9,890 

9,980 

10,000 

9.010 

9,870

9,660 

9,840 

9,960 

9,690 

9,890

9,770 

9,780 

9,620 

9,600 

9,790

9,810 

9,670 

9,860 

10,000 

10, 200 

10.200

301,800

39 

32 

26 

26 

33

28 

31 

34 

34 

30

30 

40 

42 

40 

39

41 

41 

35 

32 

30

31 

34 

31 

33 

33

40 

45 

42 

41 

38 

38

1,010 

817 

b650 

655 

853

728 

809 

870 

866 

783

801 

1,080 

1.130 

1,070 

1,040

1,070 

1)1,100 

913 

837 

801

818 

898 

805 

855 

872

1,060 

1,170 

1,120 

1,110 

1,050 

bl.OOO

28,641

June

Mean 

discharge 

(cfs)

31,700 

30,500 

30,200 

27,900 

25,400

24, 200 

23,400 

22, 100 

20,700 

19,700

19,500 

18,500 

17,700 

15,000 

14,800

14,200 

14,000 

12,500 

11,700 

11,300

10,900 

10,600 

10,400 

10,200 

9,800

9,460 

9,420 

9,270 

9,430 

9,350

503,830

Suspended sediment

Mean 

concentration 

(ppm)

80 

80 

89 

71 

66

65 

52 

55 

55 

55

51 

50 

49 

51 

50

49 

52 

58 

49 

38

40 

40 

40 

36 

31

27 

28 

30 

32 

35

--

Tons 

per 

day

6,850 

6,590 

7,260 

5,350 

4,530

4,250 

3,290 

3,280 

3,070 

2,930

2,690 

2,500 

2,340 

2,070 

2,000

1,880 

1,970 

1,980 

1,550 

1,160

1,180 

1,140 

1,120 

991 

820

690 

712 

751 

815 

884

76,623

September

10,200 

10,100 

10,000 

10,200 

10, 200

10,600 

10, 700 

10,700 

11,300 

11,500

11,400 

11,400 

11,500 

12,100 

12,400

12,700 

13,000 

13,200 

13,300 

13,300

13,400 

13,200 

12,900 

12,700 

12,700

12,300 

12,200 

12, 600 

16,400 

18,200

366,400

39 

40 

40 

35 

35

39 

48 

41 

45 

57

59 

48 

50 

60 

65

59 

59 

61 

60 

55

55 

48 

53 

51 

50

46 

41 

49 

80 

110

--

b 1,100 

b 1,100 

1,080 

964 

964

1,120 

1,390 

1,180 

1,370 

1,770

1,820 

1,480 

1,550 

1,960 

2,180

2,020 

2,070 

2,170 

2,150 

1,980

1,990 

1,710 

1,850 

1,750 

1,710

1,530 

1,350 

bl,700 

3,540 

5,410

53,958

6,649,450 

1,688,788

b Computed from estimated concentration graph.
348 PACIFIC SLOPE BASINS IN CALIFORNIA

 8 2 

l-Rri

 g v

 p

il < 

II s: 

*1& « St ^

lii 111 §§

8-s

M M M

S§8

a a a

tirt 0.

Ill
SACRAMENTO RIVER BASIN Continued

CLEAR LAKE NEAR CLEAR LAKE OAKS. CALIF

(Formerly published as Clear Lake (north end) Clear L

LOCATION. At boat pier at Glen Haven Fish .Harbor Motel, 3.6 miles above Clear Lake Oaks, Lake Coun

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

.Oct. 26, 1956....

Jan. 15, 1957....

May 13 ..........

Mean 

discharge 

(els)

Silica 

(810.)

9.8 

11

Iron 

(Fe)

0.02 

.01

Calcium 

(Ca)

23 

23 

23 

23 

23 

22

21 

24 

22

24

Magnesium 

(Mg)

14 

14 

14 

15 

15 

14

15 

12 

13

14

Sodium 

(Na)

9.9 

10 

10 

10 

11 

9.7

9.5 

9.6 

9.6 

11 

11 

11

Potassium 

(K)

1.9 

2.0 

2.4 

1.9 

2.0 

1.9

1.9 

1.8 

1.8

2.3

Bicarbonate 

(HCO.)

148 

152 

153 

151 

152 

140

141 

143 

143 

146 

151 

154

Sulfate 

(SO,)

8.6 

9.6

Chloride 

(Cl)

5.6 

6.2 

5.0 

5.6 

6.0 

5.5

6.0 

5.5 

5.0 

6.0 

6.3 

6.6

Fluoride 

(F)

0.2 

.1

Nitrate 

(NO,)

0.1 

1.6

Boron 

(B)

0.72 

.79 

.73 

.87 

.83 

.90

.84 

.74 

.78 

.77 

.87 

.91
SACRAMENTO RIVER BASIN Continued

CLEAR LAKE AT LAKEPORT, CALIF.

LOCATION. At foot of Third Street near municipal wharf in Lakeport, Lake County.

DRAINAGE AREA. 528 square miles, including water surface of lake (65 square miles).

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Records of gage height for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 26, 1956.....

Jan. 15, 1957 ..... 

Feb 19

Mar 14

c Ant 1 1

Mean 

discharge 

(els)

Silica 

(SiO.)

10 

14

Iron 

(Fe)

0.03 

.01

Calcium 

(Ca)

23 

23 

23 

21 

22 

21

20 

22 

22

24

Magnesium 

(Mg)

14 

14 

14 

14 

15 

13

14 

13 

13

14

Sodium 

(Na)

9.9 

9.4 

10 

9.6 

9.8 

9.0

9.0 

9.4 

9.8 

10 

11 

11

Potassium 

(K)

2.2 

2.0 

2.1 

1.9 

1.8 

1.8

1.7 

1.7 

2.3

2.5

Blear - 

bonste 

(HCO,)

148 

149 

156 

141 

146 

133

135 

140 

140 

145 

150 

155

Sulfate 

(SO,)

7.7 

11

Chloride 

(CD

5.4 

6.2 

6.0 

5.5 

5.0 

5.0

5.0 

5.0 

5.0 

5.8 

6.0 

7.3

Fluoride 

(F)

0.2 

.1

Nitrate 

(NO,)

0.6 

2.7

Boron 

(B)

0.72 

.62 

.73 

.81 

.71 

.75

.67 

.81 

.82 

.77 

.83 

.73
SACRAMENTO RIVER BASIN--Continued 

CACHE CREEK NEAR LOWER LAKE, CALIF.

LOCATION. At gaging station 500 feet downstream from Clear Lake Dam, 1.9 miles (revised) downstre

Lake County.

DRAINAGE AREA. 528 square miles, including water surface of Clear Lake (65 square miles). 

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 26, 1956....

Jan. 15, 1957 ....

Apr. 16 .........

Discharge 

(cfs)

al.5

2.5 

1.2 

1.0 

1.4 

58

455 

383 

383 

348 

235

Silica 

<SiOa)

6.2 

1.4

Iron 

(Fe)

0.01 

.01

Calcium 

(Ca)

25 

24 

24 

28 

25 

19 

22

26 

16

25

Magnesium 

(Mg)

15 

15 

17 

18 

17 

11 

17

13 

19

14

Sodium 

(Na)

11 

11 

11 

14 

14 

11 

12

11 

11 

11 

12 

12

Potassium 

(K)

2.2 

2.2 

2.2 

2.4 

2.2 

2.1 

2.5

1.9 

2.1

2.5

Bicarbonate 

(HCO,)

160 

162 

166 

181 

163 

105 

155

153 

151 

153 

156 

160

Sutfate 

(S0«)

3.1

9.6 

8.6

Chloride 

(CD

6.0 

6.8 

6.0 

13 

12 

7.0 

8.5

6.0 

5.0 

6.2 

6.0 

6.8

Fluoride 

(F)

0.2 

.0

Nitrate 

(NO,)

1.2 

5.4

Boron 

(B)

0.88 

.69 

.78 

1.1 

.80 

.46 

.92

.95 

.92

.87 

.88 

.98

a Daily mean discharge 
SACRAMENTO RIVER BASIN Continued 

NORTH FORK CACHE CREEK NEAR LOWER LAKE, CALIF

LOCATION (revised). At bridge on State Highway 20, 3 miles below gaging station, 2 miles above conflu

Lower Lake, Lake County.

DRAINAGE AREA. 19S square miles (above gaging station). 

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957. 

REMARKS. Some inflow between gaging station and sampling point during rainy season. Records of disch

given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Dec. 13 ............

Jan. 15, 1957.......

Sept. 11............

Discharge 

(cfs)

0 

12 

13 

274 

28 

575

60 

90 

28 

9.0 

2.9 

1.7

Silica 

(SiO.)

15 

22

Iron 

(Fe)

0.01 

.00

Calcium 

(Ca)

37 

50 

50 

21 

32 

17

25 

26 

30

31

Magnesium 

(Mg)

38 

49 

53 

17 

31 

11

19 

19 

21

27

Sodiuin 

(Na)

44 

56 

54 

22 

42 

11

19 

20 

23 

25 

32 

33

Potassium 

(K)

1.9 

2.5 

2.1 

1.0 

1.5 

.8

1.0 

.9 

1.4

2.1

Bicarbonate 

(HCO,)

287 

287 

284 

146 

240 

112

181 

162 

190 

182 

201 

199

Carbonate 

(CO,)

0 

0 

0 

0 

0 

0

0

11

8 

15 

10 

13

Sulfate 

(S04)

12 

9.6

Chloride 

(Cl)

71 

141 

145 

31 

60 

8. 5

19 

20 

26 

26 

43 

47

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

0.3 

.1

B

ro

(B

3.

7.

7.

2.

4.

.

1.

1.

2.

2.

2.

2.
SACRAMENTO RIVER BASIN Continued 

CACHE CREEK NEAR CAPAY, CALIF.

LOCATION. At gaging station, 1.8 miles upstream from Clear Lake Water Company's diversion dam, 3.2 

northwest of Esparto. 

DRAINAGE AREA. 1,052 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1952 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 25, 1956 ....

Feb. 18, 1957..... 

Mar. 11..........

May 10 ...........

Sept. 10 .........

Discharge 

(cfs)

10 

17 

21 

48 

426

340 

655 

418 

406 

300 

a211

Silica 

(310.)

11 

5.1

Iron 

(Fe)

0.01 

.00

Calcium 

(Ca)

40 

48 

50 

50 

28

30 

26 

28

26

Magnesium 

(Mg)

33 

41 

54 

43 

23

27 

20 

16

19

Sodium 

(Na)

57 

66 

84 

91 

33

36 

21 

17 

16 

18 

20

Potassium 

(K)

2.3 

2.6 

3.0 

3.1

1.6

2.4 

2.1 

2.5

2.6

Bicarbonate 

(HCO,)

274 

343 

306 

303 

186

221 

184 

176 

174 

178 

186

Sulfate 

(S04 )

15 

11

Chloride 

(Cl)

81 

110 

149 

145 

42

42 

20 

15 

22 

14 

18

Fluoride 

(F)

0.1 

.0

Nitrate 

(NO,)

1.1 

.9

Boron 

(B)

1.7 

1.6 

2.8 

5.0 

1.7

1.6 

1.2 

1.2 

1.1 

1.1 

1.1

a Mean daily discharge.
SACRAMENTO RIVER BASIN Continued

PUTAH CREEK NEAR WINTERS, CALIF.

LOCATION. At gaging station,6 miles west of Winters, Yolo County, and 8 miles downstream from Cape

DRAINAGE AREA. 577 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1952 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 25, 1956....

Jan. 14, 1957....

Sept. 10 .........

Discharge 

(cfs)

7.4 

40 

26 

32 

67 

42

42 

42 

46 

20 

12 

13

Silica 

(SiO,)

21 

18

19

Iron 

(Fe)

0.07 

.01

Calcium 

(Ca)

35 

32 

35 

32 

17 

18

14 

14 

14

16

Magnesium 

(Mg)

68 

52 

61 

47 

29 

23

17 

16 

21

19

Sodium 

(Na)

14 

23 

9 3 

20 

11 

17

7.3 

7.6 

6.5 

6.6 

9.2 

8.6

Potassium 

(K)

2.3 

1.9 

1.5 

1.5 

1.1 

1.4

1.4 

1.3 

1.2

1.7

Bicarbonate 

(HCO,)

448 

350 

406 

320 

183 

151

121 

118 

121 

130 

149 

144

Sulfate 

(S04 )

12 

8.6

Chloride 

(Cl)

28 

19 

19 

17 

8.5 

10

5.5 

5.8 

4.5 

4.8 

7.0 

3.8

Fluoride 

(F)

0.1 

.3

Nitrate 

(N0a)

1.1 

.0

Boron 

(B)

1.3 

.37 

.86 

.57 

.26 

.36

.36 

.16 

.00 

.24 

.33 

.22
SACRAMENTO RIVER BASIN Continued 

SACRAMENTO RIVER AT SNODGRASS SLOUGH, NEAR COU

LOCATION. At tidal gaging station, 2 miles north of Courtland, Sacramento County, and approximat

RECORDS AVAILABLE. Chemical analyses: October 1952 to September 1957.

REMARKS. Tidal gaging station maintained and operated by State of California Department of Wate

station due to tidal effects from Suisun Bay.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 11, 1956..... 

Nov 21

Jan. 11, 1957.....

Sept. 12 ..........

Mean 

discharge 

(cfs)

Silica 

(Si02)

24 

18 

22 

22 

21 

20

18 

20

Iron 

(Fe)

0.00 

.04 

.03 

.00 

.01 

.11

.00 

.01

Calcium 

(Ca)

13 

12 

12 

14 

14 

10

13 

13 

11

14

Magnesium 

(Mg)

5.6 

4.9 

7.1 

7.3 

6.7 

5.8

5.5 

4.4 

4.7

ff.O

Sodium 

(Na)

10 

8.2 

9.4 

13 

11 

5.8

7.7 

10 

8.7 

12 

13 

16

Potassium 

(K)

1.3 

1.3 

1.3 

1.4 

1.3 

.9

1.0 

1.1 

1. 1

2.1

Bicarbonate 

(HCO,)

77 

72 

78 

86 

82 

57

68 

66 

64 

76 

79 

94

Sulfate 

(S04 )

6.7 

2.9 

5.8 

7.3 

9.6 

9.6

7.5 

8.6

Chloride 

(Cl)

7.0 

5.5 

5.5 

9.6 

8.2 

3.5

6.5 

8.8 

5.5 

7.7 

9.0 

12

Fluoride 

(F)

0.0 

.1 

.1 

.0

.1

.2 

.2

.0

Nitrate 

(NO,)

0.9 

.7 

1.0 

1.0 

1.1 

.7

.7 

1.7

Bo

ro

(B

0.0

.1

.0

.1

.0

.0

.0

.0

.1

.0

.0

.0
SALKn-iENTO RIVER BASIN Continued

LINDSAY SLOUGH NEAR RIO VISTA, CALIF.

LOCATION. Near tidal gaging station,6 miles north of Rio Vista, Solano County, and 1.1 miles upst

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Tidal gaging station maintained and operated by State of California Department of Water 

station due to tidal effects from Suisun Bay.

Chemical analyses, In parts per million, water year October 1956 

Date of collection

Oct. 15, 1956.....

Jan. 16, 1957.....

Sept. 12..........

Mean 

discharge 

(cfs)

Silica 

(S102)

21 

19 

24

Iron 

(Fe)

0.17 

.12 

.19

Calcium 

(Ca)

13 

14 

12

15 

15 

15

13 

14 

13

12

Magnesium 

(Mg)

8.0 

7.9 

8.3 

8.4 

9.4 

12

7.9 

7.3 

7.9

9.7

Sodium 

(Na)

12 

10 

11 

15 

14 

20

11 

17 

14 

14 

15 

19

Potassium 

(K)

.6 

.8 

.3 

.6 

.4 

.8

1.2 

1.2 

1.6

2.0

Bicarbonate 

(HCO,)

89 

87 

84 

102 

94 

100

78 

80 

84 

85 

90 

94

Sulfate 

(S04 )

15 

19 

15

Chloride 

(Cl)

8.8 

8.0 

6.0 

9.0 

11 

16

7.5 

10 

10 

9.1 

11 

12

Fluoride 

(F)

0.2 

.1 

.3

Nitrate 

(NO,)

1.1 

.6 

.6

Boron 

(B)

0.08 

.12 

.04 

.13 

.07 

.18

.04 

.36 

.17 

.00 

.08 

.15
SACRAMENTO RIVER BASIN Continued 

SACRAMENTO RIVER NEAR RIO VISTA, CALIF.

LOCATION. On pier, 1,500 feet above tidal gaging station, 1 mile south of Rio Vista, Solano Count

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

REMARKS. Gaging station maintained and operated by State of California Department of Water Resour

due to tidal effects from Suisun Bay.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 15, 1956....

Jan. 16, 1957....

Uar* 99

Sept. 12.........

Mean 

discharge 

(cfs)

Silica 

(SiO.)

18 

21

Iron 

(Fe)

0.10 

.02

Calcium 

(Ca)

12 

13 

13 

15 

14 

11

12 

12 

11

14

Magnesium 

(Mg)

6.1 

6.3 

6.4 

7.1 

8.4 

6.2

5.8 

5.6 

4.7

8.5

Sodium 

(Na)

9.9 

9.4 

10 

13 

12 

8.0

7.1 

9.6 

8.6 

13 

14 

16

Potassium 

(K)

.4 

.8 

.4 

.3 

.2 

1.2

1.1 

1.0 

1.2

1.8

Bicarbonate 

(HCO.)

78 

77 

81 

93 

86 

67

66 

68 

63 

84 

75 

97

Sulfate 

(SO,)

9.6 

9.6 

Chloride 

(Cl)

6.3 

5.0 

6.0 

9.0 

9.6 

6.4

5.9 

6.5 

5.5 

9.8 

10 

11

Fluoride 

(F)

0.2 

.2

Nitrate 

(NO,)

1.1 

.6

Boron 

(B)

0.00 

.10 

.11 

.05 

.04 

.12

.00 

.00 

.10 

.17 

.01 

.05
SACRAMENTO RIVER BASIN Continued

MISCELLANEOUS ANALYSES OF STREAMS IN SACRAMENTO RIVER BAS

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Mean 

discharge 

(cfs)

Silica 

(S102)

Iron 

(Fe)

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium 

(Na)

Potassium 

(K)

Bicarbonate 

(HCO.)

Sulfate 

(S04 )

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Boron 

(B)

PIT RIVER NEAR CANBY (SEC. 10, T. 41 N., R. 9 

Oct. 17, 1956.... 

Apr. 10, 1957....

Sept. 18 ......... 38

_

.02

20 

15

18

20

7.6 

5.8

8.0

26 

11

19

5.9 

2.4

5.9

154 

92

142 4.8

5.5 

2.5

3 2

3 2

5.2 .2 .6

0.05 

.06

22

.00 

BURNEY CREEK NEAR BURNEY (SEC. 18, T. 35 N., R. 

Oct. 17, 1956.... 

Apr. 10, 1957....

Aug. 14 .........

Sept. 18 ......... 34 .05

10 

6.4

14

4.9 

2.2

2.1

3.6

4.5 

2.5

3.0

4.8

1.5 

.5

.6

1.5

67 

38

71

_

1.9

0.2 

.0

.6

1.0

_

.0 .2

0.00 

.00

.00

CHURN CREEK NEAR ANDERSON (SEC. 3, T. 30 N., R. 

July 23, 1957 .... 32 

35 

37

0.00 

.00

17 

15 

15

8.4 

9.6 

8.9

9.3 

9.2 

8.9

0.9 

.8 

1.1

100 

101 

96

7.7 

5.4 

4.2

4.8 

4.8 

5.3

0.2 

.0 

.1

1.3 

1.9 

2.3

0.00 

.01 

.01

ANDERSON CREEK NEAR ANDERSON (SEC. 33, T. 30 N . , R

July 23, 1957 ....

Sent. 30 .........

26 

28 

31

0.10 

.15

13 

12 

12

6.7 

6.6 

9.1

8.7 

8.5 

8.4

3.4 

2.2 

3.6

83 

84 

85

8.6 

3.8 

14

3.2 

2.5 

4.2

0.2 

.2 

.1

0.6 

.6 

.9

0.00 

.06 

.02
MIDDLE PORK COTTONWOGD CREEK NEAR COTTONWOOD (SEC. 17, T. 

July 23, 1957 ....

Seot. 30. ........

19

26

0.00

.00

28 

24

18

12 

14

7.7

8.6

8.1

1.8

1.5

140

85

11

6.7

7.8 

11

12

0.2

.1

0.0

.5

0.00

.00

SOUTH FORK COTTONWOOD CREEK NEAR COTTONWOOD (SEC. 17, T. 2

July 23, 1957. ....

Seot. 30 .........

14

20

0.00

.00

24 

35

40

9.5 

11

13

13

19

1.5

1.8

114

136

4.8

21

19

44

0.3

.1

0.0

2.7

0.02

.12

COTTONWOOD CREEK NEAR ANDERSON (SEC. 9, T. 29N..R

July 23, 1957 .... 24 

31 

27

0.00 

.04

16 

17 

19

12 

9.1 

9.4

9.0 

9.3 

8.7

1.8 

1.6 

1.6

116 

108 

93

4.8 

4.8 

12

5.7 

5.0 

12

0.2 

.1 

.1

0.0 

.3 

.7

0.00 

.06 

.00

STONY CREEK NEAR HAMILTON CITY (SEC. 36, T. 22 N., R

Mar. 12, 1957 ...

June 11..........

10 0.02

28 

33 

34 

34

10 

13 

12 

12

12 

14 

14 

14

1.0

.7 

.7 

.7

120 

142 

152 

155

15

15 

19 

18 

17

0.0 0.2

0.13 

.09 

.09 

.20

a Includes equivalent of 3 parts per million of carbonate (CO3 ).
SACRAMENTO RIVER BASIN Continued

MISCELLANEOUS ANALYSES OF STREAMS IN SACRAMENTO RIVER BASIN IN 

Chemical analyses, in parts per million, water year October 1956-to Septe

Date of collection

Mean 

discharge 

(cfs)

Silica 

(SiO,)

Iron 

(Fe)

Calcium 

(Ca)

Magnesium 

(Mg)

Sodium 

(Na)

Potassium 

(K)

Bicarbonate 

(HCO.)

Sulfate 

(S04 )

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Boron 

(B)

INDIAN CREEK NEAR CRESCENT MILLS (SEC. 25, T. 26 N

Oct. 3, 1956.....

Apr. 11, 1957.... 

May 9 ...... .

Sent. 19.........

28

99

32

--

.00

18

10

28

6.6

3.2

6.6

8.9

4.4

S

O

13

1.4

1.1

2.2

106

56

154

135

2.9

7.7

2.5

.0

 I Q

6.0

0.1

.0

0.6

.4

0.05

.00

03

.00

CLEAR LAKE NEAR SULFUR BANK (SEC. 5, T. 13 N., 

Apr. 4, 1957

Apr. 4 4:00 p.m. 

Apr. 4 4:15 p.m. 

Apr. 4 4:30 p.m.

5.6

7.1 

7.1 

7.1

0.00

.00 

.02 

.03

22

22 

24 

23

16

16 

14 

14

10

9.9 

9.8 

9.8

1.9

1.8 

1.7 

1.9

146

151 

146 

148

11

7.7 

7.7 

7.7

6.0

5.5 

5.5 

5.5

0.1

.2 

.3 

.3

0.3

.1 

.2 

.1

0.93

.93

.77 

.85
SACRAMENTO RIVER BASIN 361 

SACRAMENTO RIVER BASIN Continued

MISCELLANEOUS ANALYSES OF STREAMS IN THE SACRAMENTO RIVER BASIN IN CALIFORNIA Continued 

Periodic determinations of suspended-sediment discharge, water year October 1956 to September 1957

Date Time

Water 

temperature Discharge 

(cfs)

Suspended sediment

Mean

concentration 

(ppm)

Discharge 

(tons per day)

CLEAR CREEK AT FRENCH GULCH

Oct. 4, 1956 ................ 2:45 p.m. 67 13 2

Nov. 2...................... 10:30 a. m. 46 . 44 6

Dec. 12..................... 9:10a.m. 44 29 

Jan. 22, 1957................ 11:55 a.m. 38 59 2

Jan. 29 ..................... 2:00 p.m. 35 50 3

Feb. 1...................... 2:30p.m. 35 39 2

Feb. 19..................... 9:05 a.m. 43 90 1

Feb. 28..................... 8:10a.m. 47 1,060 35

Mar. 27..................... 11:30 a.m. 51 260 2

Apr. 17..................... 9:05a.m. 46 240 4

May 1....................... 1:30 p.m. 50 188 3

May 15...................... 8:45 a.m. 50 445 5

June 11 ..................... 6:50 a. m. 57 156 2

July 30...................... 7:10 a.m. 62 ___ 29 _______2

	BATTLE CREEK NEAR COTTONWOOD

Oct. 4, 1956 ................ 10:45 a.m. 58 324 9

Nov. 2...................... 1:15 p.m. 271 6

Dec. 11..................... 3:20 p.m. 48 220 3

Jan. 22, 1957 ............... 9:20 a.m. 40 300 20

Feb. 18..................... 4:40 p.m. 53 230 9

Feb. 28..................... 10:40 a.m. 50 1,020 47

Mar. 26..................... 3:30p.m. 55 412 7

Apr. 18..................... 2:15 p.m. 56 480 7

May 14 ..................... 4:50 p.m. 58 408 6

June 10 ..................... 2:40 p.m. 68 557 32

July 29 ..................... 6:20p.m. 66 _____195 _______4

	SACRAMENTO RIVER NEAR RED BLUFF

Nov. 2, 1956 ................ 4:20 p.m. 8,590 17

Dec. 11..................... 1:15 p.m. 48 6,980 8

Jan. 21, 1957 ............... 3:45 p.m. 45 6,270 77

Feb. 18..................... 2:20 p.m. 56 4,010 9

Feb. 28..................... 1:30 p.m. 61 22,000 137

Mar. 26..................... 1:50 p.m. 54 7,640 13

Apr. 18..................... 3:45p.m. 52 9,750 452

May 14 ..................... 3:25 p.m. 56 11,800 94

June 10 ..................... 12:15 p.m. 60 9,400 10

July 29 ..................... 3:45 p.m. 56 9,350 8

Sept. 17 .................... 1:30 p.m. 62 7,430 ______6

MIDDLE FORK FEATHER RIVER BELOW SLOAT

Oct. 3, 1956 ................ 9:15 a.m. 51 79 1

Mar. 26, 1957............... 8:20 a.m. 43 596 14

Apr. 16..................... 9:10 a.m. 42 693 15

May 14 ..................... 10:15 a.m. 48 576 4

May 21 ..................... 9:15 a.m. -- 1,280 42

June 9 ...................... 4:40 p.m. 52 484 5

July 24 ..................... 9:00 a. m. 62 77 3

Aug. 27..................... 4:50 p.m. 60 54 3

.3

.4

.2

.2

100

1.4

2.6

1.5

6.0

.8

.2

7.9

4.4

1.8

16

5.6

129

7.8

9.1

6.6

48

2.1

394

151

1,300

97

8,140

268

11,900

2,990

254

202

120

0.2

23

28

6.2

145

6.5

.6

.4

t Less than 0.05 ton.
362 PACIFIC SLOPE BASINS IN CALIFORNIA 

SACRAMENTO RIVER BASIN Continued

MISCELLANEOUS ANALYSES OF STREAMS IN THE SACRAMENTO RIVER BASIN IN CALIFORNIA Continued 

Periodic determinations of suspended-sediment discharge, water year October 1956 to September 1957 Continued

Date Time

Water 

temperature <°F)

Discharge 

(cfs)

Suspended sediment

Mean 

concentration 

(ppm)

Discharge 

(tons per day)

INDIAN CREEK NEAR CRESCENT MILLS

Aue. 28 ..................... 8:40 a.m. 52

704

955

624

438

31

12

25

21

11

3.2

57

129

42

25

1.4

.4

MIDDLE FORK AMERICAN RIVER NEAR AUBURN

Feb. 24 .....................

June 3 ......................

11:50 a.m.

1:35 a.m.

144

195

239

3,750

5,790

3,100

4,070

3,510

1

1

1

50

32

9

11

10

0.4

.5

.6

506

500

75

121

95

SOUTH FORK AMERICAN RIVER NEAR LOTUS

May 23 ..................... 11:10 a.m. 53

284

3,560

2,860

4

2

51

21

10

17

3.4

1.5

293

202

55

131

YOLO BYPASS NEAR WOODLAND

Feb. 24 a ...................

Mar. 8a ....................

Mar 113.

Mar. 13 ....................

May 29...................... 9:20 a.m. 69

b99

39,800

5,020

35,600

19,400

2,350

3,720

1,280

64

73

266

253

142

94

112

105

207

154

100

115

4

20

28,600

24, 700

1,920

8,980

10,800

5,500

1,310

1,550

1,020

397

a Samples collected from bridge on U. S. Highway 40, 8 miles below station.

b Discharge computed from supplementary water-stage recorder about 0.7 mile above bridge on U. S. Highway 40.
SACRAMENTO RIVER BASIN Continued 

MISCELLANEOUS ANALYSES OF STREAMS IN THE SACRAMENTO RIVER BASIN 

Particle-size analyses of suspended sediment, water year October 195

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W

Date 

of 

collection

Time

Discharge 

(cfs)

Water 

temperature

r F)

Suspended s

Concentration 

of sample 

(ppm)

Concentration 

of suspension 

analyzed 

(ppm)

Percent fi

0.002 0.004 0.008 0.016 

BATTLE CREEK NEAR COTTONWOOD

Feb. 28, 1957 ... 10:40 a. mj 1,020 50 47 262 44 47 

SACRAMENTO RIVER NEAR RED BLUFF 

Jan. 21, 1957 ... 

Feb. 28 .........

3:45 p.m. 

1:30 p.m. 

3:45 p.m.

6,270 

22, 000 

9,750

45 

61 

52

77 

137 

452

400 

1,120 

3,080

66 

28 

52

97 

51 

81

INDIAN CREEK NEAR CRESCENT MILLS 

Oct. 3, 1956 .... 12:15 p.m 65 60 18 

MIDDLE FORK AMERICAN RIVER NEAR AUBURN

Feb. 24, 1957 . . . 10:00 a.m. 3,750 48 50 630 19 51 

SOUTH FORK AMERICAN RIVER NEAR LOTUS

Feb. 24, 1957 . . . 11:35 a.m. 2,130 48 51 395 50 68 

YOLO BYPASS .NEAR WOODLAND

Mar. 1, 1957. ... 

Mar. 13........ .

10:35 a.m. 

9:45 a.m.

36,200 

2,350 50

253 

207

2,110 

742

87 

73

96 

97
NAPA RIVER BASIN 

NAPA RIVER NEAR ST. HELENA, CALIF.

LOCATION.--At highway bridge, 0.2 mile downstream from gaging station, 1.2 miles northeast of Zinfa

DRAINAGE AREA. 81.3 square miles (above gaging station).

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

Sediment records: December 1956 to September 1957. 

EXTREMES, 1956-57.--Sediment concentrations: Maximum daily, 1,470 ppm Feb. 24; minimum daily, no f

Sediment loads: Maximum daily, 10,200 tons Feb. 24; minimum daily, 0 tons on many days. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct 26, 1956 .....

Jan. 15, 1957.....

Sept. 11 .........

Discharge 

(cfs)

0.9 

3.1 

3.5 

28 

9.7 

134

34 

22 

7.6 

1.3 

1.6 

0

Silica 

(S10a)

42 

31

Iron 

(Fe)

0.04 

.00

Calcium 

(Ca)

34 

30 

26 

17 

18 

14

17 

19 

21

30

Magnesium 

(Mg)

16 

15 

14 

7.4 

10 

4.9

7.4 

8.1 

9.7

15

Sodium 

(Na)

18 

22 

27 

23 

28 

11

17 

19 

17 

18 

19 

20

Potassium 

(K)

2.4 

3.4 

3.2 

4.3 

3.4 

1.9

2.8 

2.8 

2.9

3.3

Bicarbonate 

(HCO,)

198 

166 

142 

90 

112 

68

96 

107 

120 

156 

182 

187

Sulfate 

(S04 )

12 

13

Chloride 

(Cl)

10 

29 

40 

25 

30 

8.5

13 

15 

13 

16 

12 

12

Fluoride 

(F)

0.5 

.3

Nitrate 

(NO,)

2.0 

.5

Boron 

(B)

0.24 

.14 

.97 

.83 

.94 

.26

.36 

.62 

.42 

.43 

.40 

.37
NAPA RIVER BASIN

NAPA RIVER BASIN Continued

NAPA RIVER NEAR ST. HELENA, CALIF.--Continued

Suspended sediment and temperature (°F) ot water, December 1956 to September 1957 

^Once-daily measurement, between 12 m. and 6 p.mj

365

Date

Dec. 20 ............

December total ....

Jan. 17.............

Jan. 30. ............

January total ......

Feb. 9 .............

Feb. 22 ............

Feb. 27 ............

Feb. 28 ............

February total .....

Mar. 4.............

Mar. 8.............

Apr. 26 ............

May 23 .............

May total .........

June total .........

July 25 .............

July total. .........

Water 

temperature (°F)

53 

46

c43 

c46 

c47 

48 

c47 

c51 

50 

50 

47 

48 

46 

c43 

45

47 

44 

53 

53 

53 

54 

56

--

..

--

62 

55 

c52 

c64

--

62 

68 

c56 

59 

58 

55 

c53 

c57

--

76

78

..

Mean 

discharge 

(cfs)

3.5 

3.7

al!2.7

3.9 

4.2 

13 

83 

37 

28 

14 

212 

49 

20 

17 

14 

10

3665.0

8.3 

16 

9.7 

76 

87 

1,050 

2,250 

960 

701 

528 

295

a6,168.9

212 

241 

386 

331 

149

a 4, 481

43 

60 

127 

29

al, 170

24 

27 

29 

396 

266 

278 

272 

110

a 2, 334

a 437. 5

3.3 

1.2

a75.7

Suspended sediment

Mean 

concentration 

(ppm)

6 

5

3 

3 

16 

120 

60 

33 

24 

173 

40 

12 

9 

8 

4

4 

11 

4 

91 

69 

912 

1,470 

1,060 

294 

80 

48

--

23 

54 

102 

134

57

-

37 

54 

114 

20

-

23 

18 

20 

440 

62 

119 

75 

20

-

--

4 

2

_

Tons per day

0.1 

.1

b.2

(t) 

(t) 

s.6 

s30 

6.0 

2.5 

.9 

sl!9 

s5.8 

.6 

.4 

.3 

.1

b!70

.1 

.5 

.1 

s28 

s!7 

s3,310 

s 10, 200 

s3,310 

s626 

s!20 

38

b 18, 000

13 

35 

s!09 

120 

23

b 1,300

4.3

s9.7 

s40 

1.6

blSO

1.5 

1.3 

1.6

s737 

45 

sl25 

55 

5.9

b 1,000

b8.4

(t) 

(t)

b.6

s Computed by subdividing day.

t Less than 0.05 ton.

a Monthly totals include days not shown

b Days not shown are estimated and included in total.

c Measurement before 12 m.
366 PACIFIC SLOPE BASINS IN CALIFORNIA

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Decemb ically dls cumulatio

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edlment

 o

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15

U

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1

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«

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than iler

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0

£

jncentration suspension

0 o

sntration & 

o

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a

s

H

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3

1

0

g

o*

«

o

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o

o

o 

o

s

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o

o

s

o

1

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 o

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11

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41211
SONOMA CREEK BASIN 

MISCELLANEOUS ANALYSES OF STREAMS IN SONOMA CREEK BASIN I

SONOMA CREEK AT BOYES HOT SPRINGS 

Periodic determinations of suspended-sediment discharge, January to S

Date

Jan. 15, 1957 ........

Feb. 23 .............

Sect. 30 .............

Time

2:45 p.m. 

9:35 a.m. 

10:00 a.m. 

11:05 a.m. 

1:00 p.m. 

5:00 p.m. 

12:00 m. 

5:00 p.m. 

12:30 p.m. 

12:15 p.m. 

12:15 p.m. 

5:15 p.m. 

1:00 p.m. 

5:00 p.m. 

12:00 m. 

6:00 p.m. 

1:15 p.m. 

12:15 p.m. 

6:00 p.m. 

12:15 p.m. 

12:30 p.m. 

9:00 a.m. 

1:20 p.m. 

11:00 a.m. 

1:00 D.m.

Water 

temperature

57 

53 

53 

54 

56 

56 

58 

56 

58 

58 

58 

58 

58 

57

57 

57 

56 

57 

56 

48 

52 

65 

56 

69

Discharge 

(cfs)

13 

912 

826 

592 

333 

282 

773 

543 

260 

238 

164 

176 

191 

327 

240 

160 

134 

179 

138 

116 

411 

30 

17 

129 

3.2

M

concen

(p

1,0

1,1

1,0

1

9

2

2

(Metho

Date 

of 

collection

Feb. 23, 1957 . . .

Time

9:35 a.m. 

12:00 m.

Discharge 

(cfs)

912 

773

Water 

temperature 

(°F)

53 

58

Suspended sed

Concentration 

of sample 

(ppm)

1,080 

940

Concentration 

of suspension 

analyzed 

(ppm)

4,630 

2,720

Percent finer 

0.002 0.004

37 

26

0.008 0.016

61 

41

0
RUSSIAN RIVER BASIN 

EAST FORK RUSSIAN RIVER AT POTTER VALLEY POWERHO

LOCATION. At gaging station of Pacific Gas and Electric Co. powerhouse, 3 miles northwest of Potte

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for Potter Valley powerhouse tailrace near Potter Valley for water 

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 5, 1956.....

Jan. 7, 1957 ..... 

Feb. 4 . . .......

Mar. 4..........

Aug. 5 ..........

Discharge 

(cfs)

235 

236 

1.7 

101 

132 

306

156 

300 

298 

204 

205 

206

Silica 

(SiO,)

10 

14

Iron 

(Fe)

0.01 

.01

Calcium 

(Ca)

21 

23 

26 

29 

22 

14

18 

17 

18

20

Magnesium 

(Mg)

5.7 

6.8 

6.9 

7.2 

6.4 

7.3

4.7 

4.1 

5.8

4.7

Sodium 

(Na)

5.0 

7.7 

7.0 

7.7 

7.5 

5.3

5.3 

4.5 

4.4 

4.7 

4.5 

4.4

Potassium 

(K)

0.6 

.8 

.8 

.6 

.8 

1.4

1.0 

.6 

.5

1.2

Bicarbonate 

(HCO,)

100 

109 

118 

129 

98 

79

78 

74 

77 

78 

78 

87

Sulfate 

(S04 )

5.8 

7.1

Chloride 

(CD

3.0 

5.3 

5.0 

5.8 

5.2 

1.1

2.0 

2.3 

2.2 

2.1 

2.8 

3.0

Fluoride 

(F)

0.1 

.1

Nitrate 

(NO,)

0.3 

.1

Boron 

(B)

0.27 

.64 

.55 

.72 

.56 

.24

.21 

.23 

.20 

.19 

.16 

.30
RUSSIAN RIVER BASIN Continued 

EAST FORK RUSSIAN RIVER NEAR CALPELLA, C

LOCATION (revised).--On left bank 0.5 mile downstream from Cold Creek and 3.6 miles east of Calpel

DRAINAGE AREA. 93.0 square miles (revised).

RECORDS AVAILABLE. Chemical analyses: October 1952 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 5, 1956.....

Dec 3

Jan. 7, 1957.....

Sept. 10.........

Discharge

(cfs)

214 

245 

25 

107 

229

329 

300 

179 

177 

196

Silica 

(810.)

16 

15

Iron 

(Fe)

0.03 

.00

Calcium 

(Ca)

21 

22 

26 

28 

20

18 

18

18

Magnesium 

(Mg)

6.6 

8.0 

6.0 

8.6 

8.4

6.3 

7.3

7.1

Sodium 

(Na)

5.6 

7.7 

7.4 

8.7 

6.5

4.9 

5.5 

5.6 

5.3 

6.2

Potassium 

(K)

0.8 

.8 

.8 

.6 

.7

.6

.7

1.2

Bicarbonate 

(HCO,)

104 

110 

124 

136 

98

83 

87 

88 

87 

92

Sulfate 

(SOJ

9.6 

12

Chloride 

(Cl)

2.9 

5.0 

5.0 

6.4 

3.0

2.5 

3.0 

2.7 

3.0 

3.0

Fluoride 

(F)

0.3 

.2

Nitrate 

(NO,)

0.1 

.3

Boron 

(B)

0.32 

.48 

.29 

.73 

.02

.15 

.22 

.28 

.18 

.36
RUSSIAN RIVER BASIN--Continued

RUSSIAN RIVER AT URIAH, CALIF. 

(Formerly Published as Russian River near Ukiah

LOCATION. On right bank below Talmadge Road bridge, 0.1 mile below Middle Creek, 1 mile east of Uki

Russian River.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 5, 1956......

Seot. 10 ..........

Mean 

discharge 

(cfs)

Silica 

(Si02)

14 

14

Iron 

(Fe)

0.01 

.01

Calcium 

(Ca)

22 

23 

26 

28 

22 

14

28 

19 

19

20

Magnesium 

(Mg)

6.1 

8.1 

7.5 

9.2 

8.5 

6.1

9.7 

7.4 

9.4

6.0

Sodium 

(Na)

5.9 

9.5 

8.6 

11 

9.2 

6.9

11 

6.2 

6.9 

6.6 

5.8 

5.0

Potassium 

(K)

0.8 

.8 

1.0 

.9 

.8 

1.7

1.2 

.5 

.8

1.2

Bicarbonate 

(HCO,)

106 

115 

126 

141 

112 

70

125 

94 

96 

95 

88 

94

Sulfate 

(S04 )

9.6 

5.9.

Chloride 

(Cl)

3.6 

7.3 

5.5 

6.9 

6.5 

3.7

7.7 

3.0 

4.3 

3.5 

3.0 

3.7

Fluoride 

(F)

0.1 

.1

Nitrate 

(NO,)

0.3 

.2

Boron 

(B)

0.31 

.68 

.57 

.89 

.51 

.15

.15 

.17 

.27 

.31 

.25 

.30

P
RUSSIAN RIVER BASIN Cont inued 

RUSSIAN RIVER NEAR HOPLAND, CALIF.

LOCATION.--At gaging station in Rancho de Sanel Grant, 0.2 mile downstream from McNab Creek, 4 mile

upstream from Sulfur Creek. 

DRAINAGE AREA. 362 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 5, 1956.....

Jan. 7, 1957 ....

Sept. 10. ........

Discharge 

(cfs)

185 

331 

214 

126 

440 

1,660

620 

510 

490 

170 

184 

a 170

Silica 

(Si02)

16 

14

Iron 

(Fe)

0.01 

.00

Calcium 

(Ca)

22 

22 

26 

27 

22 

12

20 

20 

21

19

Magnesium 

(Mg)

8.0 

9.3 

8.4 

10 

9.7 

9.2

10 

8.0 

10

8.9

Sodium 

(Na)

9.4 

9.2 

8.9 

12 

10 

6.4

8.4 

6. 5 

6.9 

7.2 

6.5 

7.8

Potassium 

(K)

0.9 

.9 

.8 

.9 

.9 

1.4

.8 

.6

.7

1. 1

Bicarbonate 

(HCO,)

110 

118 

128 

142

115 

83

108 

98 

100 

104 

98 

112

Sulfate 

(SO,)

9.6 

1.0

Chloride 

(Cl)

4.4 

6.6 

6.5 

7.0 

8.0 

2.7

5.2 

4.0 

3.5 

3.8 

3.8 

3.7

Fluoride 

(F)

0.2

.1

Nitrate 

(NOS )

0.6 

.3

Boron 

(B)

0.59 

.62 

.30 

.80 

.52 

.20

.19 

.18 

.26 

.25 

.23 

.39

a Daily mean discharge .
RUSSIAN RIVER BASIN Continued 

RUSSIAN RIVER NEAR HEALDSBURG, CALIF.

LOCATION.--At gaging station in Sotoyome Grant, 2 miles eaet of Healdsburg, Sonoma County, and 3.5 

DRAINAGE AREA.--791 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, November 1956 to Sep

Date of collection

Nov. 4, 1956 .....

Sent. 10 ..........

Discharge 

(cfs)

406 

a205 

a 145 

395 

3,670

1,070 

760 

858 

a 220 

a. 145 

a!35

Silica 

(Si02 )

18 

18

Iron 

(Fe)

0.01 

.00

Calcium 

(Ca)

26 

29 

31 

26 

17

25 

25 

26

24

Magnesium 

(Mg)

12 

13 

14 

13 

11

14 

13 

13

15

Sodium 

(Na)

10 

10 

11 

10 

6.8

8.4 

7.8 

9.6 

9.5 

9.6 

8.7

Potassium 

(K)

1.6 

1.1 

.9 

1.0 

1.4

.8 

.8 

1.6

1.4

Bicarbonate 

(HCO,)

144 

161 

173 

145 

103

138 

138 

140 

157 

156 

156

Sulfate 

(SO,)

12 

2.9

Chloride 

(Cl)

6.0 

6.5 

7.2 

7.3 

3.7

5.0 

5.0 

4.5 

5.6 

6.0 

5.5

Fluoride 

(F)

0.2 

.2

Nitrate 

(NO,)

0.5 

.2

Boron 

(B)

0.83 

.55 

.94 

.64 

.29

.33 

.28 

.34 

.54 

.58 

.54

a Dally mean discharge
RUSSIAN RIVER BASIN Continued 

RUSSIAN RIVER AT GUERNEVILLE, CALIF.

LOCATION.--On bridge on State Highway 12, in Guerneville, Sonoma County, 5.3 miles downstream from 

DRAINAGE AREA. 1,342 square miles (above gaging station).

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for gaging station near Guerneville for water year October 1956 to S

Chemical analyses, in parts per million, water year October 1956 t

Date of collection

Oct. 18, 1956.....

Jan. 7, 1957......

Feb. 4 ...........

Sept. 10..........

Discharge 

(cfs)

214 

425 

205 

148 

533 

5,110

1,430 

964 

1,060 

257 

146 

136

Silica 

(SiO.)

19 

18

Iron 

(Fe)

0.01 

.00

Calcium 

(Ca)

27 

24 

30 

31 

26

ie

25 

25 

26

25

Magnesium 

(Mg)

13 

12 

15 

16 

15 

13

15 

13 

13

16

Sodium 

(Na)

12 

11 

13 

14 

11 

7.6

9.6 

8. 9 

8. 9 

9.9 

10 

11

Potassium 

(K)

1.1

i.e

1.5 

1.3 

1.3 

1.7

1.0 

1.0 

1.0

1.6

Bicarbonate 

(HCO.)

162 

135 

172 

178 

150 

113

136 

140 

144 

165 

164 

166

Sulfate 

(SO,)

12 

5. 8

Chloride 

(Cl)

7.4 

6.3 

9.8 

11 

9.0 

5.0

6.0 

6.0 

6.0 

6.0 

6.2 

4.5

Fluoride 

(F)

0.1 

.3

Nitrate 

(NO,)

0.4 

.2

Boron 

(B)

1.2 

.70 

.63 

.84 

.58 

.21

.25 

.29 

.32 

.47 

.51 

.52
EEL RIVER BASIN

EEL RIVER AT McCANN, CALIF.

LOCATION. On right bank below Summer Bridge, about 0.5 mile northwest of McCann, Humboldt County

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. No discharge records available for this station.

Chemical analyses, In parts per million, water year October 1956 

Date of collection

Dec. 4 ...........

Jan. 8, 1957 .....

M9V 7

Sept. 11 ..

^

Mean 

discharge 

(cfs)

Silica 

(SiO.)

14

14

Iron 

(Fe)

0.01

.00

Calcium 

(Ca)

40 

27 

36 

33 

15

18 

21 

22

37

Magnesium 

(Mg)

9.2 

5.9 

8.8 

7.7

4.5

5.7 

6.7 

9.5

10

Sodium 

(Na)

7.5 

6.6 

6.5 

7.1 

3.3

3.9

5.4 

4.6

8.2 

8.9

Potassium 

(K)

1.4 

1.2 

1.0 

.8 

2.5

.8 

1.1 

.8

1.8

Bicarbonate 

(HCO,)

154 

98 

137 

126 

68

80 

94 

97 

123 

147 

148

Sulfate 

(SO,)

9.6 

25

Chloride 

(Cl)

5.8 

6.5 

6.4 

5.9 

.5

2.1 

3.5 

2.7 

4.4 

6.7 

6.0

Fluoride 

(F)

0.3 

.2

Nitrate 

(NO,)

0.0 

.2

Boron 

(B)

0.11 

.19 

.12 

.12

.14

.01 

.00 

.08 

.14 

.13 

.30
EEL RIVER BASIN Continued 

SOUTH FORK EEL RIVER NEAR MIRANDA, CALIF

LOCATION. At gaging station at Sylvandale Campgrounds on U. S. Highway 101, 0.5 mile upstream fro

County, and 20 miles upstream from mouth. 

DRAINAGE AREA. 537 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 5, 1956 ..... 

Nov. 3...........

Mar. 5 ..........

Sept. 11 .........

Discharge 

(cfs)

39 

648 

107 

107 

14, 400

1,360 

690

162 

92 

64

Silica 

(Si02)

17 

13

Iron 

(Fe)

0.01 

.00

Calcium 

(Ca)

32

16 

25 

24 

8.4

14 

18 

18

26

Magnesium 

(Mg)

11 

6.2 

7.9 

7.3 

4.4

5.2 

5.6 

6.8

11

Sodium 

(Na)

10 

6.9 

8.4 

8.0 

4.0

5.5 

6.5 

6.5 

3.9 

9.2 

11

Potassium 

(K)

1.3 

1.0 

.9 

.7 

2.3

.8 

.8 

.7

1.6

Bicarbonate 

(HCO,)

157 

79 

118 

111 

43

71 

82 

85 

108 

122 

144

Sulfate 

(SOJ

7.7 

9.6

Chloride 

(Cl)

7.4 

4.7 

6.9 

6.8 

1.5

3.8 

4.5 

4.0 

5.1 

7.2 

6.2

Fluoride 

(F)

0.2 

.3

Nitrate 

(NO,)

0.0 

.2

Boron 

(B)

0.17 

.10 

.12 

.13 

.12

.02 

.00 

.01 

.09 

.09 

.18
EEL RIVER BASIN Continued 

SOUTH FORK EEL RIVER NEAR MIRANDA, CALIF. Conti

Date

Sept. 20 ...............

Time

1:30 p.m. 

4:40 p.m. 

2:10 p.m. 

11:10 a.m. 

5:30 p.m. 

12:00 m. 

10:20 a.m. 

11:30 a.m. 

10:20 a.m. 

12:00 m. 

9:40 a.m. 

10:35 a.m. 

4:40 p.m. 

10:40 a.m. 

7:50 a.m.

Water 

temperature 

(eta)

50 

48 

45 

41 

50 

52 

52 

53 

55 

52 

57 

55 

70 

66 

67

Discharge 

(cfs)

1,230 

584 

5,060 

1,540 

801 

19, 200 

19,000 

7,740 

1,330 

1,130 

19, 300 

3,760 

532 

95 

65

M

concen

(p

2,5

2,0

2,2

5

3,5

Particle-size analyses-of suspended sediment, November 1956 to Se

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

Date 

of 

collection

Nov. 1, 1956 ..... 

Jan. 14, 1957. ....

Feb. 26. .........

Time

1:30 p.m. 

2:10 p.m. 

12: 00m. 

10:20 a.m. 

11:30 a.m. 

9:40 a.m.

Discharge 

(cfs)

1,230 

5,060 

19,200 

19,000 

7,740 

19, 300

Water 

temperature 

(°F)

50 

45 

52 

52 

53 

57

Suspended sedi

Concentration 

of sample 

(PPm)

116 

2,590 

2,070 

2,250 

528 

3,590

Concentration 

of suspension 

analysed 

(PPm)

778 

4,110 

4,840 

4,840 

2,820 

4,360

Percent finer 

0.002 0.004

60 

38 

31 

28 

33 

21

0.008 0.016

79 

62 

55 

49 

59 

40

0
EEL RIVER BASIN Continued

EEL RIVER AT SCOTIA, CALIF.

LOCATION. On left bank near gaging station on bridge on U. S. Highway 101, 0.5 mile north of Scot

River.

DRAINAGE AREA. 3,113 square miles.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 5, 1956....

Jan. 8, 1957. . . .

Discharge 

(cfa)

86 

3,080 

380 

523 

53, 800

7,170 

4,030 

3,400 

571 

284 

134

Silica 

(S10,)

14 

13

Iron 

(Fe)

0.01 

.00

Calcium 

(Ca)

42 

22 

36 

33 

15

21 

24 

23

37

Magnesium 

(Mg)

12 

6.2 

9.1 

8.1 

5.0

7.7 

8. 3 

7.4

12

Sodium 

(Na)

9.8 

7.0 

8.6 

9.4 

4.3

5.9 

6.9 

6.1 

8.6 

9.2 

11

Potassium 

(K)

1.4 

1.3 

1.2 

.9 

2.5

1.1 

1.0 

.9

1.8

Bicarbonate 

(HCO,)

190 

85 

146 

133 

67

96 

108 

101 

134 

161 

174

Sulfate 

<SO«)

15 

12

Chloride 

(CD

6.8 

6.3 

7.0 

7.2 

1.8

3.5 

4.0 

3.8 

6.1 

5.5 

6.2

Fluoride 

(F)

0.2 

.3

Nitrate 

(NO,)

0.2 

.3

Boron 

(B)

0.10 

.04 

.06 

.12 

.14

.05 

.00 

.09 

.11 

.07 

.23
EEL RIVER BASIN Continued

EEL RIVER AT SCOTIA, CALIF.--Continued

Periodic determination of suspended-sediment discharge, November 19

Date

of 

collection

Nov. 1, 1956 ...

Jan. 14 , 1957 . .

Feb. 21 ........

Feb. 26 ........

Mar. 29 ........

May 18 .........

Aug 3

Time

. 3:55 p.m.

. 4:50 p.m.

Discharge 

(cfs)

6,050

20, 200

1 9fl (Win

temperature 

<°F)

51

43

CO

Suspended 

Mean 

concentration 

(ppm)

397

2,050

123

Particle-size analyses of suspended sediment, November 1956 to Se

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

Nov. 1, 1956 ..... 

Feb. 21, 1957 ....

Feb. 26..........

Mav 22 ..........

Time

3:55 p.m. 

3:20 p.m. 

1:15 p.m. 

12:05 p.m. 

1:40 p.m. 

6:20 a.m. 

1:15 o.m.

Discharge 

(cfs)

6,050 

3,190 

128,000 

82,700 

39,400 

14, 300 

18.100

Water 

temperature 

<°F)

51 

53 

51 

52 

53 

57 

55

Suspended se

Concentration 

of sample 

(ppm)

397 

38 

3,480 

2,890 

1,510 

2,260 

470

Concentration 

of suspension 

analyzed 

(ppm)

2,640

4,400 

3,920 

3,860 

4,530 

1.900

Percent fin

0.002 0.004

60

34 

29 

29 

28 

25

0.008 0.016

84

56 

52 

48 

51 

47
EEL RIVER BASIN 

EEL RIVER BASIN Continued

MISCELLANEOUS ANALYSES OF STREAMS IN THE EEL RIVER BASIN IN CALIFORNIA 

Periodic determinations of suspended-sediment discharge, water year October 1966 to September 1957

379

Date Time

Water 

temperature (°F)

Discharge 

(cfs)

Suspended sediment

Mean 

concentration

(ppm)

Discharge 

(tons per day)

EEL RIVER ABOVE DOS RIOS

Feb. 22 .............

Mar. 29 .............

Sept. 29 ............. 4:00 p.m. 62

504

21 *955 900

17

9.4

7 9

10

10

7 9

352

122

9

2

2

2

1

175

712

6.2

(t)

.1

.1

(t)

.1

(t)

(t)

58

MIDDLE PORK EEL RIVER AT DOS RIOS

Jan. 25, 1957 ........

Sept. 20 .............

11:30 a.m.

10:45 a.m.

37

698

490

18

19

231

3

1

1

12

36

30

3,390

261, 000

1,140

93,000

4.0

.1

(t)

VAN DOZEN RIVER NEAR BRIDGEVILLE

Feb. 26. .............

May 17

48

39

48

51

49

51

66

3,080

714

931

12,800

2,790

872

420

143

24

835

105

388

4,020

644

58

14

3

2

2,260

16, 900

6,940

202

975

139, 000

4,850

137

16

2,110

1.2

.1

t Less than 0.05 ton.
EEL RIVER BASIN Continued 

MISCELLANEOUS ANALYSES OF STREAMS IN THE EEL RIVER BASIN IN CALI

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, me

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, in d

Date 

of 

collection

Time

Discharge 

(cfs)

Water 

temperature

r F)

Suspended sedim

Concentration 

of sample 

(ppm)

Concentration 

of suspension 

analyzed 

(PPm)

Percent finer t

0.002 0.004 0.008 0.016 0.0

EEL RIVER ABOVE DOS RIOS

Feb. 22, 1957.... 12:30 p.m. 

11:00 a.m. 

4:00 p.m. 

7:50 p.m.

1,040 

21,900 

955 

11,800

53

52 

53

95 

2,780 

276 

745

480 

4,040 

1,500 

3,540

77 

32 

70 

30

90 

50 

91 

47

5

5

MIDDLE FORK EEL RIVER AT DOS RIOS

Feb. 22, 1957 ....

Mav 18 ..........

11:30 a.m. 

9:00 a.m. 

3:15 p.m. 

1:10 o.m.

2,600 

31, 200 

1,820 

12. 300

47

48 

54

483 

3,100 

231 

2.800

1,970 

4,460 

1,440 

4.980

33 

30 

51 

20

49 

51 

72 

37

5

6

8

4

VAN DUZEN RIVER NEAR BRIDGEVILLE

Nov. 1, 1956 ..... 

Jan. 14, 1957 ....

Mav 21 ..........

10:20 a.m. 

11:10 a.m.

10:40 a.m.

1,210 

2,240

2.460

48 

47

AQ

50

691 

2,800

Q4C

317

4,620 

3,340

2 ft7n

1.670

55 

32

01

32

80 

56

55

8

6

6
MAD RIVER BASIN

MISCELLANEOUS ANALYSES OF STREAMS IN THE MAD RIVER BASIN IN CALIFORNIA 

Periodic determinations o^suspended-sedlment discharge, water year^ October 1956 to September 1957

381

Date Time

Water

per-

(°F)

(cfe)

Suspended sediment

Mean

concentration

(ppm)

Discharge

(tons per day)

MAD RIVER NEAR FOREST GLEN.

Feb. 26 ..............

37

one

n\A

10,700

1.1

(t)

MAD RIVER NEAR ARCATA

Jan. 15, 1957. .........

Sept. 19 .............. 12:15 p.m.

49

CQ

eg

63

15 900

14 900

1 990

40

26

123

3

730

32,900

99

80, 500

7,350

.4

.2

t Less than 0.05 ton.
MAD RIVER BASIN Continued 

MISCELLANEOUS ANALYSES OF STREAMS IN THE MAD RIVER BASIN IN CA

Particle-size analyses of suspended sediment, water year October 1956 to 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, m

Date 

of 

collection

Time

Discharge 

(cfs)

Water 

temperature 

CF)

Suspended sedim

Concentration 

of sample 

(ppm)

Concentration 

of suspension 

analyzed 

(ppm)

Percent finer 

0.002 0.004 0.008 0.016 0.

MAD RIVER NEAR FOREST GLEN

Jan. 14, 1957 . . . 

Feb. 26 ........

4:20 p.m. 

4:50 p.m.

825 

4,400 48

118 

901

842 

1,400

59 

16

77 

27

8

3

MAD RIVER NEAR ARCATA

Nov. 2, 1956 .... 

Dec. 13 ........

Jan. 15, 1957. . . . 

Jan. 24 ........

Feb. 25 ........

Mar. 6 .........

8:50 p.m. 

9:10 a.m.

1:20 p.m.

1,840 

10,100 

9 a Aft

5,470

49 

50

43

49

147 

1,390

887

Z ftAfl

1,090 

4,480

4,320

QOQ

59 

28

33

76 

50

53

49

8

6

6

C
KLAMATH RIVER BASIN 

KLAMATH RIVER BELOW FALL CREEK, NEAR COPCO

LOCATION. At gaging station 500 feet downstream from Fall Creek, half a mile downstream from Copc

1 mile south of Copco, Siskiyou County. 

DRAINAGE AREA. 4,370 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 10, 1956....

Jan. 10, 1957....

Sept. 18.........

Discharge 

(cfs)

3,470 

3,500 

3,920 

3,170 

2,880 

2,980

3,330 

3,670 

2,960 

1,580 

1,500 

2,310

Silica 

(S10.)

25 

42

Iron 

(Fe)

0.11 

.04

Calcium 

(Ca)

13 

14 

12 

13 

9.6 

11

13 

16 

14

12

Magnesium 

(Mg)

7.6 

7.2 

6.3 

5.7 

5.1 

6.9

6.2 

8.0 

5.6

4.7

Sodium 

(Na)

17 

6.9 

18 

16 

10 

13

15 

22 

15 

13 

15 

14

Potassium 

(K)

3.1 

1.3 

3.4 

2.3 

1.9 

2.4

2.4 

3.4 

2.6

3.0

Bicarbonate 

(HCO,)

84 

95 

86 

74 

65 

72

72 

94 

84 

74 

86 

76

Sulfate 

(SO,)

35 

8.3

Chloride 

(Cl)

3.4 

1.4 

3.0 

3.6 

1.5 

1.5

3.4 

3.5 

3.0 

2.9 

3.0 

3.6

Fluoride 

(F)

0.6 

.1

Nitrate 

(NO,)

2.3 

5.4

Boron 

(B)

0.09 

.00 

.09 

.06 

.08 

.05

.04 

.01 

.06 

.08 

.08 

.04
KLAMATH RIVER BASIN Continued 

KLAMATH RIVER AT SOMESBAR, CALIF.

LOCATION. One hundred feet below gaging station, 400 feet downstream from Salmon River, and 1 mil

DRAINAGE AREA. 8,480 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 1, 1956 .....

May 10, 1957 ....

Discharge 

(cfs)

1,780 

9,410 

10,900 

8,840 

a3,000 

a 2, 300 

a2,700

Silica 

(810.)

16 

36

Iron 

(Fe)

0.04 

.03

Calcium 

(Ca)

19 

14 

12 

13

23

Magnesium 

(Mg)

10 

7.5 

5.8 

7.4

4.0

Sodium 

(Na)

18 

8.6 

7.3 

5.0 

8.2 

12 

15

Potassium 

(K)

2.8 

1.4 

1.4 

1.1

2 9

Bicarbonate 

(HCO,)

113 

82 

69 

66 

86 

88 

108

Sulfate 

(S04 )

11 

11

Chloride 

(Cl)

5.7 

3.5 

2.0 

2.5 

3.3 

4.0 

4.3

Fluoride 

(F)

0.2 

.2

Nitrate 

(NO,)

0.6 

2.0

Boron 

(B)

0.06 

.05 

.00 

.00 

.07 

.04 

.19

a Daily mean discharge (cfs).
KLAMATH RIVER BASIN--Continued

KLAMATH RIVER AT SOMESBAR, CALIF.--Cont

Periodic determinations ot suspended-sediment discharge, Janu

Date

Feb. 26. ..................

Feb. 26 ..................

Julv 31 ...................

Time

1:30 p.m. 

3:25 p.m. 

3:55 p.m. 

4:10 p.m. 

1:45 p. m. 

5:20 p. m. 

11:00 a. m. 

1:40 p.m. 

7:05 a.m. 

1:10 p.m. 

5:05 p.m. 

3:40 D. m.

Water 

temperature 

( F)

40 

38 

46 

52

50

53 

47 

61 

65 

72

Discharge 

(eta)

7,320 

5,260 

9,160 

46,000 

79,100 

74,100 

19,800 

19,400 

12,700 

9,760 

6,370 

2.420

Particle-size analyses of suspended sediment, January to Sep

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

N, in native water; P, pipet; S. sieve; V, visual accumulation tube; W

Date 

of 

collection

Jan. 23, 1957 ... 

Feb. 26. ........

Time

1:30 p.m. 

5:20 p. m. 

11:00 a.m. 

1:40 p.m.

Discharge 

(cfs)

7,320 

74,100 

19,800 

19,400

Water 

temperature 

(°F)

40 

50

53

Suspended s

Concentration 

of sample 

(ppm)

75 

1,750 

206 

207

Concentration 

of suspension 

analyzed 

(PPm)

435 

4,080 

685 

1,160

Percent fi

0.002 0.004

19 

17 

23 

16

0.008 0.016

27 

32 

34 

27
KLAMATH RIVER BASIN Continued 

TRINITY RIVER AT LEWISTON, CALIF.

LOCATION. At gaging station on downstream side of left pier of highway bridge at Lewiston, Trinity 

DRAINAGE AREA. 727 square miles.

RECORDS AVAILABLE.--Chemical analyses: December 1953 to September 1957.

Water temperatures: September 1951 to September 1955. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 16, 1956 ....

Jan. 14, 1957 ....

Sept. 11 .........

Discharge 

(cfs)

218 

443 

1,310 

810 

658 

5,570

2,630 

3,810 

1,340 

449 

214 

144

Silica 

(SiO,)

15 

14

Iron 

(Fe)

0.03 

.00

Calcium 

(Ca)

10 

7.9 

5.8 

7.6 

8.0 

4.8

5.2 

4.2 

6.4

8.4

Magnesium 

(Mg)

12 

9.3 

6.0 

8.5 

9.7 

7.5

7.3 

5.7 

6.8

12

Sodium 

(Na)

10 

8.7 

4.7 

9.9 

10 

2.4

2.9 

2.4 

3.2

5.7 

6.7 

7.6

Potassium 

(K)

0.6 

.6 

.7 

.6 

.6 

.4

.3 

.3

.4

1.1

Bicarbonate 

(HCO,)

97 

81 

54 

73 

82 

46

51 

43 

50 

70 

80 

86

Sulfate 

(SO,)

1.9 

3.8

Chloride 

(Cl)

11 

7.0 

4.4 

7.7 

8.5 

1.5

2.6

1.5 

2.7 

4.8 

6.3 

7.8

Fluoride 

(F)

0.2 

.2

Nitrate 

(NO,)

0.8 

.2

Boron 

(B)

0.23 

.18 

.08 

.18 

.21 

.06

.02 

.00 

.02 

.11 

.08 

.14
KLAMATH RIVER BASIN Continued 

TRINITY RIVER AT LEWISTON, CALIF...Continu

Periodic determination of suspended-sediment discha

water year October 1956 to September 1957

Date 

of 

collection

Oct. 4, 1956 .....

Jan. 22, 1957 ....

Feb. 25 .........

Sept. 18 .........

Time

4:20 p.m. 

9:00 a.m. 

10:50 a.m. 

1:35 p.m. 

3:10 p.m. 

7:30 a.m. 

10:20 a.m. 

2:15 p.m. 

5:10 p.m. 

1:00 p.m. 

1:35 p.m 

10:45 a.m. 

10:00 a.m. 

10:40 a.m. 

2:00 p.m. 

8:20 a.m. 

8:40 a.m. 

7:00 a.m.

Discharge 

(cfs)

171 

458 

1,410 

402 

299 

322 

1,100 

12,100 

9,420 

4,300 

2,200 

2,510 

4,650 

3,350 

4,370 

2,120 

276 

151

Water 

temperature 

<"F)

42 

38 

35 

34 

42 

47 

48 

45 

53 

45 

48 

51 

57 

58 

67 

61

Suspend

Mean 

concentration 

(ppm)

1 

2 

192 

2 

6 

2 

4 

272 

135 

40 

7 

8 

50 

6 

33 

7 

8 

4

Particle-size analyses of suspended sediment, water year October 1956 

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

Dec. 12, 1956.. 

Feb. 25, 1957..

Time

10:50 a.m. 

2:15 p.m.

Discharge 

(cfs)

1,410 

12, 100

Water 

temperature 

(8 F)

42

47

Suspended se

Concentration 

of sample 

(ppm)

192 

272

Concentration 

of suspension 

analyzed 

(ppm)

1,690 

2,420

Percent fin

0.002 0.004

80 

21

0.008 0.016

98 

36
388 PACIFIC SLOPE BASINS IN CALIFORNIA

KLAMATH RIVER BASIN Continued 

SOUTH FORK TRINITY RIVER NEAR SALYER, CALIF.

LOCATION. At gaging station 4 miles south of Salyer, Humboldt County and 8 miles upstream

from mouth.

DRAINAGE AREA. 899 square miles. 

RECORDS AVAILABLE. Water temperatures: November 1956 to September 1957.

Sediment records: November 1956 to September 1957. 

EXTREMES, 1956-57. Sediment concentrations: Maximum daily, 2,480 ppm Feb. 24; minimum

daily, 1 ppm on many days.

Sediment loads: Maximum daily, 133,000 tons Feb. 24; minimum daily, 0.3 ton Sept. 1-10. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in 

WSP 1515.

J'emperature (°F) of water, November 1956 to September 1957 

/Once-daily measurement, generally between 12 m. and 6 p.mj

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

Average

Oct. Nov.

50

49

--

a 53

--

..

..

48

..

--

..

46

--

a 39

--

Dec.

..

--

_

40

"

45

46 

47

45

"

_

a 43

..

--

a 36

--

Jan.

..

42

--

_

a 42

..

..

44

a43

all

42

_

41

a 40

._

a 36

--

Feb.

39

all

_

--

41

43

--

43

_

43

47

45

42

a 44

_

49

49

48

46

50

48

50

--

Mar.

49

48

48

47

49

49

50

51

48

49

49

46

46 

50

50

50

50

45

50

50

50

50

50

50

51

51

51

50

50

50

50

Apr.

50

50

50

50

50

a 50

a 50

a 51

..

a51

a 49

--

a 49

50

50

--

50

_

51

51

-

51

51

57

May

..

51

51

--

50

50

50

..

..

--

a 57

51

51

..

51

51

51

55

June

..

61

--

64

64

a 66

65

_

65

_

68

68

-

69

69

69

..

69

--

July

..

72

73

..

74

~

..

--

..

--

75

..

a75

..

a75

72

Aug.

..

a75

76

--

..

72

72

..

70

..

72

70

--

..

68

a 68

--

a 69

--

74

Sept.

69

69

69

--

..

..

..

a 63

a 60

..

-.

a Measurement before 12 m.
KLAMATH RIVER BASIN 

KLAMATH RIVER BASIN Continued

SOUTH FORK TRINITY RIVER NEAR SALYER, CALIF.--Continued 

Suspended sediment, November 1956 to September 1957

389

Day

1......

2. .....

3......

5. .....

6......

7. .....

8. .....

9. .....

10. .....

11......

12. .....

14. .....

15. .....

17. .....

18. .....

20. .....

24. .....

25. .....

26......

27. .....

30. .....

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

&.....

10......

13. ..... 

14. ..... 

15......

16. .....

18. .....

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

October

Mean 

discharge 

(cfs)

Suspended sediment

Mean 

concentration 

(ppm)

Tons 

per 

day

-

January

171 

166 

163 

160 

155

148 

154 

229 

182 

148

171 

330 

1,050 

1,150 

1,300

1,050 

770 

600 

580 

3,300

2,500 

1,480 

1,130 

933 

789

685 

580 

550 

537 

505 

477

22,143

1

! 27 

16

}, (a, 

290

39 

10

6

--

I"

e2

e80

77 

33

y 20 

2,580

y 360 

> 35

}'

3,941.4

November

discharge 

(cfs)

961 

789 

677 

633 

593

537 

465 

417 

372 

333

308 

284 

263 

249 

238

226 

226 

229 

182 

168

162 

158 

158 

157 

154

149 

144 

141 

136 

132

9,641

Suspended sediment

Mean 

concentration 

(ppm)

39 

26

} < >

6

> (a)

> 1 

> 2

"

Tons 

per 

day

101 

55

26

8.7

2 

.7

.7

266.0

February

469 

525 

501 

449 

424

414 

414 

521 

545 

501

477 

465 

509 

533 

1,020

,140 

,190 

,210 

,120 

,050

,490 

,910 

3,880 

17,600 

16,300

13,200 

10,300 

6,230

84,387

10 5

3

6

4 

32

26 

17 

11

54 

933 

2,480 

1,500

2,270 

900 

530

"

> 5 

< 

> 9

* 73

278 

s 12, 600 

si 33, 000 

s 63, 500

s 83, 400 

28,500 

8,920

330,871

December

Mean 

discharge 

(cfs)

131 

130 

127 

134 

160

171 

152 

142 

124 

151

623 

853 

801 

661

541

438 

378 

336 

308 

291

274 

263 

249 

242 

232

180 

166 

170 

171 

171 

178

8,948

Suspended sediment

Mean 

concentration 

(ppm)

I (a)

3 

2 

1 

5

38 

31 

21 

9

I (a) 

2

1

Tons 

per 

day

0.8

I"

s77 

71 

45 

16

5

> -9

260.0

March

4,330 

3,320 

2,930 

3,500 

7,240

8,150 

6,630 

5,260 

4,660 

3,790

4,160 

8,210 

6,660 

5,330 

5,500

5,610 

5,040 

4,320 

3,810 

3,580

3,350 

3,010 

2,760 

2,560 

2,520

2,600 

2,570 

2,500 

2,560 

2,760 

2,750

131,970

225 

120 

80 

168 

640

600 

340 

240 

220 

120

290 

626 

340 

460 

422

220 

155 

118 

160 

190

158 

138 

96

60 

118

2,630 

1,080 

633 

si, 890 

12,500

13, 200 

6,090 

3,410 

2,770 

1,230

3,260 

s 14, 200 

6,110 

6,620 

6,270

3,330 

2,110 

1,380 

1,650 

1,840

1,430 

1,120 

715

530

99,708

e Estimated.

s Computed by subdividing day.

a Concentration computed on basis of infrequent samples.
390 PACIFIC SLOPE BASINS IN CALIFORNIA 

KLAMATH RIVER BASIN Continued

SOUTH FORK TRINITY RIVER NEAR SALYER, CALIF.--Continued 

Suspended sediment, November 1956 to September 1957 Continued

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.

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.

April

Mean 

discharge 

(cfs)

2,760 

2,560 

2,410 

2,280 

2,160

2,040 

1,930 

1,820 

1,720 

1,650

1,580 

1,550 

1,560 

2,360 

2,240

2,000 

2,070 

2,350 

2,410 

2,320

2,170 

2,020 

1,900 

1,790 

1,690

1,610 

1,530 

1,480 

1,420 

1,390

58, 780

Suspended sediment

Mean 

concentration 

(ppm)

30 

62

45

190

40 

30

23

10 

15

21 

17 

8

--

Tons 

per 

day

320

> 

1,210 

> 210

" 68

7,310

July

346 

339 

332 

325 

318

304

297 

290 

284 

278

272 

266 

266 

272 

275

266 

257 

254 

245 

242

236 

230 

235 

220 

216

208 

204 

193 

182 

179 

168

7,999

4 

3 

4

3 

2

2 

2 

2

2 

3

3 

3 

3

3 

4 

3

--

> 3 

> 2

> 2

72

May

Mean 

discharge 

(cfs)

1,360 

1,670 

1,570 

1,440 

1,370

1,350 

1,310 

1,300 

1,400 

1,440

1,620 

1,570 

1,510 

1,530 

1,440

1,360 

1,340 

3,430 

4,090 

3,730

3,510 

3,000 

2,650 

2,360 

2,110

1,920 

1,780 

1,650 

1,540 

1,470 

1,360

59, 180

Suspended sediment

Mean 

concentration 

(ppm)

15 

8

8 

6

7

> ::

8

195 

250 

240

210 

110 

30

10

12 

12

-

Tons 

per 

day

> 31

e60

> 30

s 2, 020 

b2, 800 

2,420

b2, 000 

b890 

215

» 55

11,365

August

146 

132 

124 

122 

119

119 

118 

116 

114 

112

111 

110 

110 

110 

108

106 

105 

104 

102 

101

99 

98 

98 

98 

97

95 

94 

94 

94 

94 

94

3,344

Total discharge lor period November to September (cf 

Total load for period November to September (tons) . .

2 

3

3 

2 

2

2 

2

2 

1 

1

2 

2

1 

2 

1

--

> 0.8 

> .5 

> .5

18.5

June

Mean 

discharge 

(cfs)

1,250 

1,160 

1,080 

1,020 

957

905

860 

820 

768 

730

692 

656 

620 

602 

590

574 

546 

520 

495

476

462 

449 

432 

416 

404

392 

392 

384 

368 

353

1S.373

Suspended sediment

Mean 

concentration 

(ppm)

7

6 

3

4 

5

3

2 

2

3 

2 

3

3

3

--

Tons 

per 

day

> 22

> 8

> 3 

> 3

244

September

94 

93 

91 

90 

90

90 

90 

89 

88 

87

86 

86 

86 

85 

85

85 

86 

86 

85 

86

85 

85 

84 

83 

82

91 

204 

251 

195 

161

3,079

1 

1 

2

1 

1

2 

1 

1

1 

2 

3

1 

3

6

18 

20 

14 

10

--

s-days) ......................................

> 0.3 

> .4

} '

1.5 

9.9 

14 

b7 

 b4

45.4

408,844 

454,101.3

e Estimated.

s Computed by subdividing day.

b Computed from estimated concentration graph.
KLAMATH RIVER BASIN Continued 

SOUTH FORK TRINITY RIVER NEAR SALYER, CALIF. Con

Particle-size analyses of suspended sediment, November 1956 to S

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date

of 

collection

Feb. 24, 1957....

Mar. 11 .........

Time

1:00 p.m. 

1:00 p.m. 

11:30 a.m. 

10:00 a.m. 

10:00 a.m.

Discharge 

(cfs)

21,100 

15,500 

10,100 

7,460 

3,780

Water 

temperature 

CF)

48 

46 

49 

49 

49

Suspended se

Concentration 

of sample 

(ppnO

4,430 

1,500 

613 

654 

317

Concentration 

of suspension 

analyzed 

(ppm)

2,360 

1,260 

1,100 

638

Percent fin

0.002 0.004

12 

15 

21 

19

0.008 0.016

22 

30 

38 

32
KLAMATH RIVER BASIN Continued 

TRINITY RIVER NEAR HOOPA, CALIF.

LOCATION.--At gaging station in Hoopa Indian Reservation, 0.7 mile downstream from Campbell Creek, 

DRAINAGE AREA. 2,846 square miles.

RECORDS AVAILABLE. Chemical analyses: October 1953 to September 1957.

Water temperatures: November 1956 to September 1957.

Sediment records: November 1956 to September 1957. 

EXTREMES, 1956-57. Sediment concentrations: Maximum daily, 2,180 ppm Feb. 24; minimum daily, 1 p

Sediment loads: Maximum daily, 239,000 tons Feb. 24, 25; minimum daily, 2 tons Aug. 21-31, Sept

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1, 1956.....

Mar. 6, 1957 ....

Sept. 12.........

Discharge 

(cfs)

498 

3,020 

25, 800 

8,810

7,360 

1,110 

720 

364

Silica 

(SiO,)

17 

19

Iron 

(Fe)

0.00 

.00

Calcium 

(Ca)

26 

18 

12 

13

12 

25

Magnesium 

(Mg)

9.7 

7.0 

5.6 

2.3

5.4 

10

Sodium 

(Na)

6.6 

4.2 

2 2 

2.7

2.4 

4.4 

5.8 

7.2

Potassium 

(K)

0.8 

.6 

.8 

.4

.3 

1.1

Bicarbonate 

(HCO,)

122 

84 

65 

49

59 

88 

109 

125

Sulfate 

(S04)

4.8 

12

Chloride 

(Cl)

9.6 

5.0 

.0 

2.5

2 3 

4!o

5.7 

5.7

Fluoride 

(F)

0.2 

.2

Nitrate 

(NO,)

0.0 

.0

Boron 

(B)

0.09 

.05 

.08 

.00

.01 

.09 

.00 

.13
KLAMATH RIVER BASIN 393

KLAMATH RIVER BASIN Continued 

TRINITY RIVER NEAR HOOPA, CALIF.--Continued

Temperature (°F) of water, November 1956 to September 1957 

/Once-daily measurement, generally between 3 p.m. and 7 p.m.7

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

Average

Oct. Nov.

a 48

48

a 49

a 52

53

a 51

a 53

53

52

a 52

a 51

49

47

48

50

a 48

46

44

43

45

a 44

44

44

43

43

43

43

a 43

47

Dec.

a 41

42

56

42

38

40

a 41

38

39

39

40

40

40

a41

a 39

a 40

b39

b38

a 40

a 42

a 42

a 41

43

41

Jan.

a 40

a 39

_

38

_

39

_

39

39

40

42

41

41

38

a 40

42

39

a 37

40

40

39

38

38

Feb.

..

_

40

_

40

_

40

_

44

42

40

44

45

a 45

_

42

a 45

42

51

a 44

52

44

Mar.

45

45

44

44

a 44

45

46

47

46

48

47

45

46

46

47

46

47

48

46

47

47

47

48

a 48

52

54

52

49

..

a 48

47

Apr.

50

55

54

..

54

53

52

50

a 50

49

49

49

51

..

53

54

55

55

55

--

May

51

51

--

59

..

59

60

a 56

56

56

55

61

53

52

52

55

54

58

62

~

a 60

63

63

64

June

64

65

67

65

66

71

65

64

68

68

70

72

74

..

b76

b76

July

b70

75

..

73

73

._

b73

72

~

73

75

73

b71

73

..

79

72

72

Aug.

b73

70

71

a 70

70

..

72

70

--

73

73

72

..

73

72

_.

70

69

Sept.

74

73

72

74

77

70

a 67

70

--

69

a 66

a 64

69

66

..

64

62

a 60

60

a Measurement before 3 p.m. 

b Measurement after 7 p.m.
394 PACIFIC SLOPE BASINS IN CALIFORNIA

KLAHATH RIVER BASIN Continued 

TRINITY RIVER NEAR HOOPA, CALIF.--Continued 

Suspended sediment, November 1956 to September 1957

Day

1. .....

2. .....

3. .....

4. .....

5. .....

6. .....

8. .....

9. .....

10. .....

U......

12. .....

14. ..... 

15. .....

17. .....

18. .....

22......

23. .....

24. .....

25. .....

28. .....

27. .....

28. .....

30. .....

31. .....

Total.

1...... 

2...... 

3...... 

4...... 

5......

8. .....

8...... 

9...... 

10. .....

13...... 

14. ..... 

15......

18. ..... 

19. ..... 

20. .....

21...... 

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

November

Mean 

discharge 

(cfs)

3,080 

2,690 

2,420 

2,440 

2,400

2,270 

2,160 

2,130 

2,040 

1,900

1,770 

1,680 

1,580 

1,480 

1,400

1,380 

1,410 

1,430 

1,380 

1,330

1,260 

1,210 

1,190 

1,160 

1,130

1,100 

1,080 

1,070 

1,050 

1,030

49,650

Suspended sediment

Mean 

concentration 

(ppm)

155 

66 

43 

42 

33

22 

22 

20 

14 

10

12 

8 

6 

6 

5

6 

10

9 

6 

7

6 

11 

8 

10 

14

7 

6 

8 

6 

5

--

Tons 

per 

day

1,290 

479 

281 

277 

a210

135 

128 

115

77 

51

57 

a 36 

a 26 

24 

19

22 

38 

35 

22

25

20 

36 

26 

31 

43

21 

17 

23 

17 

14

3,595

February

1,930 

2,020 

1,880 

1,790 

1,730

1,700 

1,720 

1,910 

2,000 

1,980

1,930 

1,880 

1,980 

2,690 

3,520

3,980 

4,210 

4,350 

4,220 

3,950

4,580 

5,890 

9,280 

35, 600 

49,900

43,000 

43,200 

28,000

270, 820

6

4 

9

10 

20 

30

20 

16 

17 

17 

23

120 

240 

334 

2,180 

1,720

1,850 

1,470 

1,020

-

35

53 

145 

285

215 

alSO 

200 

a 190

245

a 1,500 

3,820 

s 10, 300 

s 239, 000 

s 239, 000

s 221, 000 

s 177, 000 

77,100

970,653

December

Mean 

discharge 

(cfs)

1,030 

1,010 

1,000 

1,030 

1,110

1,130 

1,070 

1,030 

1,000 

1,130

2,970 

5,120 

4,850 

4,090 

3,180

2,620 

2,280 

2,070 

1,910 

1,780

1,680 

1,600 

1,540 

1,460 

1,430

1,380 

1,330 

1,280 

1,270 

1,240 

1,230

56, 850

Suspended sediment

Mean 

concen - 

tration 

(ppm)

5 

5 

10 

9 

12

10

6 

5 

4 

5

907 

1,080 

210 

125 

71

53 

30 

20 

17 

15

10 

11 

8

5 

2

--

Tons 

per 

day

14 

14 

27 

25 

36

31

a!7 

a 14 

11 

15

s9,960 

s 15, 600 

2,750 

1,380 

610

375 

185 

112 

88

72

45 

48 

33

15

31,582

March

19,800 

14,300 

12,200 

12,700 

24,400

25, 500 

23, 300 

19,500 

18,400 

17, 600

17,000 

25,700 

22,400 

18, 500 

17,100

16,800 

15,500 

13, 800 

12,700 

12,200

11, 600 

10, 700 

9,840 

9,070 

9,140

9,760 

9,790 

9,520 

10,100 

10,800 

10.800

470, 520

570 

275 

240 

564 

803

710 

540 

420 

430 

270

326 

736 

450 

448 

440

210 

205 

130 

120 

142

112 

81 

89 

115 

145

172 

130 

86 

125 

170 

158

30,500 

10,600 

7,910 

821,000 

s 52, 200

48,900 

34,000 

22,100 

21,400 

12,800

sl5, 600 

s 51, 200 

27,200 

22,400 

20,300

9,530 

8,580 

4,840 

4,110 

4,680

3,510 

2,340 

2,360 

2,820 

3,580

4,530 

3,440 

a 2, 200 

3,410 

a 5, 000 

4.550

467, 590

January

Mean 

discharge 

(cfs)

1,220 

1,200 

1,170 

1,150 

1,120

1,090 

1,070 

1,190 

1,210 

1,160

1,200 

1,400 

2,470 

3,710 

4,320

4,020 

3,250 

2,700 

2,670 

7,000

5,870 

4,300 

3,440 

2,970 

2,710

2,440 

2,180 

1,980 

1,940 

1,860 

1,810

75,820

Suspended sediment

Mean 

concentration 

(ppm)

4 

2

2

2

3 

5 

93 

147 

144

77 

37 

18 

35 

712

255 

48 

36 

26

20

12 

10 

10

} '

--

Tons 

per 

day

8

a 10 

19 

620 

1,470 

1,680

836 

325 

131 

252 

s 14, 100

s4, 350 

557 

334 

208 

146

79 

a 59 

53

35

25,414

April

10,900 

10,100 

9,600 

9,690 

9,720

9,930 

9,520 

8,550 

8,060 

7,870

7,760 

7,710 

7,600 

9,620 

10,300

8,700 

8,350 

8,950 

9,020 

8,660

8,150 

7,690 

7,340 

7,100 

6,880

6,590 

6,500 

6,700

7,470 

8,370

253, 400

165

35

65 

32

41

70 

105 

150

106 

65 

60 

50 

38

25 

25

30 

32 

42

--

4,860 

1,400

850

1,440 

2,730 

a 4, 200

2,490 

1,470 

1,450 

a 1,200 

889

520

a 650 

949

39,138

s Computed by subdividing day.

a Computed from estimated concentrstion graph.
KLAMATH RIVER BASIN

KLAMATH RIVER BASIN Continued

TRINITY RIVER NEAR HOOPA, CALIF. Continued

Suspended sediment, November 1956 to September 1957--Continued

395

Day

1......

2. .....

3......

4. .....

5. .....

7. .....

10. .....

11......

12. .....

13. .....

15. .....

16......

18. .....

21......

22. .....

23. .....

24. .....

25. .....

27. .....

28. .....

30. ..... 

31. ..... 

Total.

L..... 

2...... 

3...... 

4...... 

5......

6. .....

&..... 

9. ..... 

10. .....

13...... 

14. ..... 

15. .....

18. ..... 

19...... 

20. .....

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. ..... 

Total.

May

Mean 

discharge 

(cfs)

8,810 

10, 100 

9,310 

7,890 

7,670

8,310 

9,020 

9,090 

9,330 

9,020

8,530 

7,950 

7,710 

8,260 

7,620

7,100 

7,290 

16, 400 

21, 500 

16,500

14, 300 

12,400 

10,700 

9,640 

9,160

9,020 

9,210 

9,480 

9,550 

9,740 

9,120

309,730

Suspended sediment

Mean 

concentration 

(ppm)

79 

95

50

70 

70

59 

47

30

569 

684 

365

180 

130 

90 

70

75 

60

52

--

Tons 

per 

day

1,880 

2,590

1,400

810

s 31, 900 

s 40, 600 

16, 300

6,950 

4,350 

2,600

1,500

137,220

August

811 

785 

752 

740 

726

720 

714 

714 

690 

672

654 

644 

632 

616 

600

583 

566 

545 

529 

519

503 

498 

493 

483 

478

468 

453 

448 

448 

453 

453

18,390

5 

5 

4 

4

3 

4

3 

2

> 2

y 9 

> 5

2

162

June

Mean 

discharge

(els)

8,970 

8,500 

7,890 

7,490 

7,210

6,720 

6,110 

5,780 

5,430 

5,000

4,740 

4,590 

4,520 

4,160 

3,850

3,580 

3,380 

3,310 

3,380 

3,310

3,230 

3,140 

3,020 

2,970 

2,910

2,860 

2,850 

2,860 

2,810 

2,690

137,260

Suspended sediment

Mean 

concentration 

(ppm)

60 

43

34 

18

15 

11 

10

12 

15

11 

15 

11

15 

10

--

Tons 

per 

day

V 1,200 

I 530

> 180 

> 110 

s- 93

9,641

September

453 

453 

439 

426 

417

404 

400 

396 

388 

380

364 

360 

360 

353 

349

345 

356 

364 

360 

364

364 

364 

353 

341 

330

404 

871 

2,570 

2,350 

1,830

17,508

Total discharge for period November to September (cf 

Total load for period November to September (tons) .

2 

3 

3

3 

2

4

3

1 

2

1 

1

15 

147 

87 

35

--

> 3

> 2

35 

si, 150 

S572 

173

1,995

July

Mean 

discharge 

(cfs)

2,550 

2,440 

2,320 

2,220 

2,140

2,040 

1,940 

1,860 

1,770 

1,670

1,650 

1,620 

1,590 

1,640 

1,650

1,590 

1,460 

1,380 

1,310 

1,250

1,210 

1,180 

1,140 

1,090 

1,040

1,010 

976 

944 

892 

871 

824

47,267

Suspended sediment

Mean 

concentration 

(ppm)

8 

7

5 

5

5 

5

4 

5

5 

4 

5

4

4 

4

--

Tons 

per 

day

s- 42 

> 22

> 16

> 11

686

1,707,215 

1,687,676

s Computed by subdividing day.
KLAMATH RIVER BASIN Continued

TRINITY RIVER NEAR HOOPA, CALIF. Continued

Particle-size analyses of suspended sediment, November 1956 to Septem

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, 

Date 

of 

collection

Dec. 11, 1956. ...

Feb. 24, 1957....

Feb. 27 .........

Time

5:30 p.m. 

4:50 p.m. 

6:00 p.m. 

6:26 p.m. 

9:25 a.m.

Discharge 

(cfs)

4,370 

4,940 

46, 300 

42, 500 

44, 200

Water 

temperature 

(°F)

39 

40 

42 

51 

52

Suspended sed

Concentration 

of sample 

(ppm)

1,760 

252 

3,330 

1,360 

1,380

Concentration 

of suspension 

analyzed 

(ppm)

2,590 

2,310 

2,990 

3,580 

3,940

Percent fine

0.002 0.004

30 

29 

15 

18 

16

0.008 0.016

58 

51 

28 

34 

31
KLAMATH RIVER BASIN Continued 

KLAMATH RIVER NEAR KLAMATH, CALIF.

LOCATION.--At gaging station,2.8 miles upstream from Turwar Creek and 3.3 miles east of Klamath, D

DRAINAGE AREA.--12,100 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: October 1953 to September 1957.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1515.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 2, 1956.....

Jan. 9, 1957 .....

Seat. 11.........

Discharge 

(cfs)

3,480 

18, 100 

7,450 

7,050 

76,800

35,900 

23, 300 

17,000 

5,180 

3,680 

3.350

Silica 

(SiO,)

15 

29

Iron 

(Fe)

0.02 

.01

Calcium 

(Ca)

21 

13 

16 

16 

4.0

12 

12 

14

16

Magnesium 

(Mg)

10 

6.0 

7.1 

6.8 

1.9

7.2 

6.3 

7.1

9.2

Sodium 

(Na)

21 

5.9 

12 

9.5 

3.4

7.2 

5.6 

4.8 

6.1 

9.6 

11

Potassium 

(K)

2.6 

1.3 

1.6 

1.3 

.7

.8 

.7 

.7

2.2

Bicarbonate 

(HCO,)

114 

70 

93 

86 

18

72 

67 

76 

84 

94 

110

Sulfate 

(SO,)

8.6 

9.6

Chloride 

(Cl)

16 

3.6 

5.5 

4.6 

3.0

2.6 

3.0 

4.3 

3.6 

5.0 

4.7

Fluoride 

(F)

0.2 

.2

Nitrate 

(NO,)

0.3 

1.3

Boron 

(B)

0.08 

.05 

.04 

.05 

.04

.00 

.00 

.00 

.04 

.00 

.17
398 PACIFIC SLOPE BASINS IN CALIFORNIA

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. ,_

^ : i^ : ::::::

§1141
PART 12. PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLUMB

WILLAPA RIVER BASIN 

WILLAPA RIVER AT LEBAM, WASH.

LOCATION. Temperature recorder at gaging station, half a mile west of Lebam, Pacific County, and 

DRAINAGE AREA. 41.4 square miles.

RECORDS AVAILABLE.--Water temperatures: March 1952 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 64°F July 5, 23; minimum, freezing point Jan. 2

EXTREMES, 1952-57.--Water temperatures: Maximum, 72°F July 19, 20, 1956; minimum, freezing point 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1516.

Temperature (°F^ of water, water year October 1956 to Septem

Day

3...................

4...................

5. ..................

6. ..................

7. ..................

8...................

9. ..................

10...................

13. ..................

14...................

16...................

17...................

20. ..................

21...................

23. ..................

24. ..................

30. ..................

31...................

October

max

56 

56 

56 

56 

55 

54 

56 

56 

56 

56

56 

56 

55 

54 

54

54 

53 

52 

51 

52

52 

51 

50 

59 

50

50 

50 

48 

47 

47 

47

53

min

54 

55 

54 

54 

53

53 

54 

56 

56 

56

56 

55 

53 

53

54

53 

52 

51 

50 

51

51 

50 

50 

49 

50

50 

47 

46 

46 

47 

46

52

November | December

max

47 

47 

48 

48 

48

48 

48 

48 

47 

48

48 

48 

48 

46 

45

47 

47 

47 

45 

43

42 

42 

42 

41 

41 

40 

40 

39 

39 

40

45

min

46 

47 

47 

47 

47

47 

48 

46 

46

47

48 

48 

46 

45 

45

45 

47 

45 

43 

41

42 

42 

41 

40 

39 

39 

39 

38 

38 

38

44

max

40 

42 

44 

44 

41

38 

36 

41 

42 

43

44 

44 

44 

44 

44

44 

45 

45 

45 

44

44 

43 

43 

43 

42 

40 

40 

40 

39 

39 

40

42

min

40 

40 

42 

41 

38

36 

36 

36 

40 

42

43 

44 

44 

44 

44

44 

44 

45 

44 

44

43 

43 

43 

42 

40

39 

40 

39 

37 

36 

39

41

January

max

40 

40 

40 

40 

39

37 

37 

37 

37 

39

39 

39 

39 

39 

39

38 

37 

36 

36 

36

36 

37 

37 

36 

34

33 

33 

33 

32 

34 

36

37

min

40 

40 

40 

39 

36

36

37 

37 

37 

37

39 

39 

39 

39 

38

36 

36 

35 

36 

36

35 

36 

36 

33 

33

33 

33 

32 

32 

32 

34

36

February

max

36 

36 

37 

38 

39

41 

41 

41 

41 

41

41 

41 

42 

43 

43

42 

43 

43 

42 

42

39 

39 

43 

44 

45

45 

45 

45

41

min

36 

35 

36 

37 

38

39 

41 

41 

41 

40

40 

41 

41 

42 

42

41 

41 

40 

42 

39

37 

38 

39

43 

44

45 

45 

44

40

March

max

45 

45 

45 

45 

45 

45 

46 

46 

46 

46

46 

45 

45 

45 

46

47 

47 

47 

48 

48

46 

46 

46 

47 

46 

48 

48 

48 

50 

49 

48

46

min

44 

45 

44 

43 

44 

45 

45 

46 

46 

45

45 

45 

44 

44 

44

46 

45 

45 

46 

46

45 

45 

45 

45 

44 

44 

45 

46 

48 

47 

47

45

April

max

49 

49 

49 

49 

49

49 

50 

51 

51 

51

48 

49 

51 

51

47

49 

49 

49 

49 

48

48 

50 

50 

49 

49 

50 

54 

58 

60 

60

50

min

46 

47 

48 

48 

49

46 

45 

46

47 

47

47 

47 

47 

47 

46

45 

47 

47 

46 

46

46 

47 

48

47 

47

47 

48 

50 

53 

55

47
CHEHALIS RIVER BASIN

CHEHALIS RIVER NEAR GRAND MOUND, WASH.

LOCATION.--Temperature recorder at gaging station, at highway bridge at Meadows, 1J miles southwe

downstream from Skookumchuck River. 

DRAINAGE AREA . 895 square miles.

RECORDS AVAILABLE.--Water temperatures: March 1952 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 70 °F on several days in June and July; minimum, 

EXTREMES, 1952-57. Water temperatures: Maximum, 76°F July 23, 24, 1956; minimum, freezing point 

REMARKS.--Records of discharge for water year October 1956 to September 1957 given in WSP 1516.

Temperature (°F) of water, water year October 1956 to Septe

Day

2. ..................

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...................

October

max

59 

59 

59 

58 

58

58 

58 

58 

58 

58

58 

57 

57 

56 

55

55 

54 

53 

52 

51

50 

50 

49 

47 

47

47 

47 

47 

46 

46 

45

53

min

58 

59 

57 

58 

57 

56 

57 

57 

58 

58

56 

56 

56 

55 

54

54 

53 

52 

51 

50

50 

49 

47 

47 

46

46 

47 

46 

46 

45 

45

52

November

max

45 

44 

46 

47 

46 

46 

47 

47 

47 

47

47 

47 

46 

46 

46

44 

44 

44 

43 

41

40 

39 

39 

39 

39

39 

38 

38 

38 

37

43

min

44 

44 

44 

46 

46

46 

46

47 

47 

47

47 

46 

46 

46 

44

44 

43 

43 

41 

40

39 

39 

39 

39 

39

38 

38 

38 

37 

37

43

December

max

37 

37 

38 

38 

38

38 

37 

36 

37 

41

42 

42 

42 

42 

43

43 

43 

44 

44 

44

44 

42 

41 

42 

42

41 

40 

40 

39 

39 

39

40

min

37 

37 

37 

38 

38 

37 

36 

35 

35 

37

41 

42 

42 

42 

42

43 

43 

43 

44 

44

42 

41 

41 

41 

41

40 

40 

39 

39 

39 

39

40

January

max

40 

41 

41 

41 

41 

41 

39 

39 

39 

38

38 

39 

39 

39 

39

39 

38 

37 

36 

35

35 

36 

36 

36 

35 

34 

33 

33 

33 

32 

32

37

min

39 

40 

41 

41

41

39 

39 

39 

37 

37

38 

38 

39 

39 

39

38 

37 

36 

35 

35

35 

35 

36 

35 

34

33 

33 

33 

32 

32 

32

37

February

max

32 

32 

32 

33 

34 

35 

36 

37 

38 

38

38 

38 

39 

39 

39

39 

39 

39 

39 

39

40 

39 

38 

41 

42

43 

43 

43

38

min

32 

32 

32 

32 

33 

34 

35 

36 

37 

38

38 

38 

38 

39 

39

39 

39 

39 

39 

39

39 

38 

37 

37 

41

42 

43 

43

37

March

max

43 

43 

44 

44 

44 

44 

44 

45 

45 

45

45 

45 

45 

44 

44

44 

45 

46 

46 

47

47 

46 

46 

46 

46

46 

46

47 

47 

47 

47

45

min

43 

43 

43 

44 

44

44 

44 

44 

45 

45

45 

45 

44 

44 

44

44 

44 

45 

46 

46

46 

46 

46 

46 

46

46 

46 

46 

47 

47 

47

45

April

max

47 

47 

47 

48 

49

49 

49 

48 

49 

49

49 

49 

51 

51 

51

50 

50 

50 

50 

51

51 

51 

51 

51 

51

51 

52 

54 

57 

58

50

min

47 

47 

47 

47 

48 

49 

48 

48 

48 

49

49 

49 

49 

51 

50

50 

50 

50 

50 

50

50 

50 

51 

51 

51

51 

51 

52 

54 

57

50
SKOKOMISH RIVER BASIN

SOUTH FORK SKOKOMISH RIVER NEAR POTLATCH, WAS

LOCATION. Temperature recorder at gaging station at head of canyon, 1 mile upstream from Rock Cr

west of Potlatch, Mason County. 

DRAINAGE AREA.--65.6 square miles.

RECORDS AVAILABLE.--Water temperatures: May 1955 to September 1957.

EXTREMES, 1956-57.--Water temperatures: Maximum, 60°F July 4, 24; minimum, 35°F on several days 

EXTREMES, 1955-57.--Water temperatures: Maximum, 61°F Aug. 12-14, 18-23, 31, 1956; minimum, free

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1516.

Temperature (°F) of water, water year October 1956 to Septem

Day

2. ..................

3...................

4...................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10...................

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

12...................

13. ..................

15...................

16...................

17. ..................

18. ..................

19...................

20. ..................

21...................

23...................

24...................

25...................

26. ..................

27...................

28...................

29. ..................

31...................

Average .......

October

max

52 

52 

52 

52 

52

52 

53 

53 

52 

53

53 

52 

52 

50 

50

50 

50 

50 

49 

48

48 

48 

47 

46 

46

46 

46 

45 

44 

44 

44

49

min

50 

50 

49 

51 

50

49 

49 

50 

51 

51 

50 

50 

49 

50 

50

49 

49 

49 

48 

48

48 

46 

46 

45 

45 

46 

45 

44 

44 

44 

42

48

November

max

43 

43 

44 

44 

44

44 

44 

44 

44 

44 

44 

44 

44 

43 

43

43 

42 

42 

41 

41

41 

41 

41 

41 

41 

40 

40 

40 

39 

40

42

min

42 

43 

43 

43 

43

43 

43 

44 

44 

44 

44 

44 

43 

42 

43

42 

42 

41 

41 

41

41 

41 

41 

41 

40

40 

40 

39 

39 

39

42

December

max

40 

40 

41 

41 

40

39 

38 

38 

40 

40 

40 

41 

41 

41 

41

41 

41 

41 

41 

41

41 

40 

40 

40 

40

40 

40 

40 

39 

39 

40

40

min

40 

40 

40 

40 

39 

38 

38 

38 

38 

40

40 

40 

41 

41 

41

41 

41 

41 

41 

41

40 

40 

40 

40 

40 

40 

40 

39 

39 

39 

39

40

January

max

40 

40 

40 

40 

40

40 

39 

38 

38 

37

37 

38 

37 

38 

38

38 

37 

37 

37

37

37 

38 

38 

37 

36

35 

36 

36 

36 

36 

38

38

min

40 

40 

40 

40 

40

39 

37 

37 

36 

35

35 

36 

37 

37 

38

37 

37 

37 

36 

36

37 

37 

37 

36 

35

35 

35 

35 

35 

36 

36

37

February

max

37 

37 

37 

39 

39

38 

38 

39 

38 

38 

38 

39 

39 

39 

40

39 

39 

39 

38 

38

37 

37 

36 

37 

38 

38 

' 38 

38

38

min

37 

36 

37 

37 

37

37 

38 

38 

38 

37 

37 

37 

38 

38 

38

38 

38 

38 

37

37

36 

35 

35 

35 

37 

38 

38 

38

37

March

max

40 

40 

40 

40 

40

39 

39 

39 

39 

39 

39 

39 

39 

39 

39

39 

40 

41 

41 

41

41 

41 

40 

40 

40 

41 

42 

42 

40 

40 

40

40

min

38 

40 

39 

40 

39

39 

39 

39 

39 

38

38 

39 

39 

38 

38

39 

39 

39 

40 

40

39 

39 

40 

39 

39

39

39 

40 

40 

40 

39

39

April

max

40 

41 

41 

41 

41

41 

41 

43 

44 

44 

42 

42 

42 

41 

41

41 

41 

42 

42 

42

42 

43 

43 

44 

44 

44 

> 47 

48 

48 

48

43

min

39 

40 

41 

41 

41

41 

40 

40 

41 

42

42 

42 

41 

41 

40

41 

41 

41 

41 

41

42 

41 

42 

41 

42

43

44 

44 

45 

45

42
SKOKOMISH RIVER BASIN Continued 

VANCE CREEK NEAR POTLATCH, WASH,

LOCATION. Temperature recorder at gaging station, 1 mile downstream from Aristine Creek and 6i m

DRAINAGE AREA. 15.6 square miles.

RECORDS AVAILABLE. Water temperatures: July 1955 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 62°F June 4, July 4, 5; minimum, 35°F Jan. 11, 

EXTREMES, 1955-57. Water temperatures: Maximum, 64°F July 20, 23, 1956; minimum, 33°F Dec. 18, 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1516.

Temperature (°F) of water, water year October 1956 to Septem

Day

2. ..................

4...................

5. ..................

6...................

7. ..................

8...................

9. ..................

13...................

14...................

16...................

17. ..................

19...................

20...................

22...................

25...................

27...................

30. ..................

31...................

Average .......

October

max

49 

49 

49 

50 

49

49 

51 

51 

51 

52

51 

50 

49 

48 

48

48 

48 

47 

46 

46

46 

45 

44 

44 

45 

45 

44 

44 

43 

44 

43

47

min

48 

48 

48 

49 

48

48 

49 

50 

51 

50

50 

48 

47 

48 

48

48 

47 

46 

46 

46

45 

44 

44 

44 

44 

44 

44 

43 

43 

43 

41

47

November

max

42 

43 

43 

43 

44

44 

44 

44 

45 

45

45 

45 

44 

43 

42

42 

43 

42 

42 

41

41 

41 

41 

41 

41 

41 

41 

41 

41 

42

43

min

41 

42 

43 

43 

43

44 

44 

44 

44 

45

45 

45 

43 

42 

42

42 

42 

42 

41 

41

41 

41 

41 

41 

41 

41 

41 

41 

41 

41

42

December

max

42 

42 

43 

43 

40

39 

38 

40 

42

43 

43

42 

41 

41 

41 

40 

40 

40 

40 

40 

41 

42

min

42 

42 

42 

40 

39 

38 

38 

38 

40

43 

42

41 

40 

40 

40 

40 

40 

40 

40 

40 

40 

41

January

max

42 

42 

42 

42 

41

40 

39 

38 

38 

36

36 

37 

38 

38 

38

38 

38 

37 

38 

38

38 

38 

38 

38 

37 

36 

35 

35 

36 

36 

37

38

min

42 

42 

42 

41 

40 

39 

38 

38 

36 

36

35 

36 

37 

38 

38

38 

37 

37 

37 

37

38 

38 

38 

37 

36 

35 

35 

35 

35 

35 

36

37

February

max

37 

37 

37 

38 

38 

38 

38 

40 

40 

40

40 

41 

41 

41 

40

40 

40 

40 

40 

40

40 

39 

39 

40 

40 

41 

42 

42

40

min

37 

37 

37 

37 

38

38 

38 

38 

40 

40

40 

40 

41 

40 

40

40 

40 

40 

40 

40

39 

38 

38 

39 

40 

40 

41 

42

39

March

max

42 

42 

42 

42 

42 

42 

42 

42 

42 

42

41 

41 

41 

41 

41

41 

41 

42 

42 

42

42 

42 

42 

42 

42 

42 

42 

42 

42 

42 

42

42

min

42 

42 

42 

42 

42 

42 

42 

42 

42 

41

41 

41 

41 

41 

41

41 

41 

41 

42 

42

42 

42 

42 

42 

42 

42 

42 

42 

42 

42 

42

42

April

max

42 

43 

43 

44 

44 

44 

44 

44 

44 

44

44 

44 

44 

44 

44

44 

43 

45 

45 

45

44 

44 

44 

44 

45 

46 

48 

50 

51 

51

45

min

42 

42 

43 

43 

43 

44 

44 

44 

44 

44

44 

44 

44 

44 

44

43 

43 

43 

45 

44

44 

44 

44 

44 

44 

44 

46 

47 

48 

50

44
SKOKOMISH RIVER BASIN Continued 

SKOKOMISH RIVER NEAR POTLATCH, WASH.

LOCATION.--Temperature recorder at gaging station, half a mile upstream from U. S. Highway 101, 

South Forks, 4.7 miles southwest of Potlatch, Mason County, and 5.5 miles upstream from mouth. 

DRAINAGE AREA. 230 square miles.

RECORDS AVAILABLE.--Water temperatures: May 1955 to September 1957. 

EXTREMES, 1956-57.--Water temperatures: Maximum, 59°F July 4, 5, 11, 19, 28. 

EXTREMES, 1955-57. Water temperatures: Maximum, 61°FAug. 6, 1955. 

REMARKS. Recorder stopped Jan. 26 to Feb. 19; temperature range 39°F to 40°F during this period. 

to September 1957 given in WSP 1516.

Temperature (°F) of water, water year October 1956 to Septem

Day

1...................

2. ..................

3...................

4...................

5. ..................

8. ..................

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...................

Average .......

October

max

54 

54 

53 

54 

53

54 

54 

52 

52 

54

51 

53 

51 

50 

50

50 

50 

50 

49 

49

48 

47 

47 

46 

46

46 

46 

46 

46 

46 

46

50

min

51 

51 

50 

51 

51

50 

50 

51 

52 

51

50 

50 

49 

50 

50

50 

49 

49 

48 

48

47 

47 

46 

46 

46 

46 

46 

46 

46 

46 

44

49

November

max

44 

44 

45 

45 

45

45 

46 

46 

46 

46

46 

46 

46 

45 

45

45 

45 

45 

44 

44

44 

44 

44 

44 

44

44 

44 

44 

44 

45

45

min

44 

44 

44 

45 

45

45 

45 

46 

46 

46

46 

46 

45 

45 

45

45 

45 

44 

43 

43

44 

44 

44 

44 

44 

44 

44 

44 

44 

44

45

December

max

44 

45 

45 

45 

44

44 

43 

43 

42 

43

43 

43 

43 

43 

43

43 

43 

43 

43 

43

43 

42 

42 

43 

43

43 

43 

43 

43 

43 

43

43

min

44 

44 

45 

44 

44

43 

43 

42 

42 

42

43 

43 

43 

43 

43

43 

43 

43 

43 

43

42 

42 

42 

42 

43 

43 

43 

43 

43 

43 

43

43

January

max

44 

44 

43 

44 

43

43 

43 

42 

42 

41

41 

41 

41 

41 

41

41 

41 

40 

40 

40

40 

41 

41 

41 

40

42

min

43 

43 

43 

43 

43

43 

42 

42 

41 

41

40 

40 

41 

41 

41

41 

40 

40 

39 

39

40 

40 

41 

40 

39

41

February

max

40 

40

40 

40 

38 

40 

40 

40 

40 

41

-

min

39 

39

39 

38 

37 

37 

40

40 

40 

40

--

March

max

41 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

43 

43

43 

43 

45 

45 

45

45 

44 

44 

44 

45 

46 

46 

45 

45 

45 

45

43

min

41 

41 

42 

42 

42

42 

42 

42 

42 

42

42~ 

42 

42 

42 

43

43 

43 

43 

45 

45

44 

44 

44 

44 

44

45 

45 

45 

45 

45 

45

43

April

max

45 

48 

47 

46 

49

48 

47 

50 

50 

48

48 

47 

47 

47 

46

48 

47 

50 

47 

48

46 

47 

47 

48 

47

49 

52 

53 

53 

51

48

min

45 

45 

46 

46 

46

47 

47 

47 

47 

46

47 

47 

47 

45 

45

45 

47 

47 

45 

44

46 

46 

46 

44 

46

46 

47 

47 

47 

48

46
SKOKOMISH RIVER BASIN--Continued

PURDY CREEK NEAR UNION, WASH.

LOCATION. --Temperature recorder at gaging station immediately downstream from county road bridge

southwest of Union, Mason County. 

DRAINAGE AREA. ~1 . 43 square miles.

RECORDS AVAILABLE. --Water temperatures: May 1955 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 54°F June 4, 5; minimum, 40°F Jan. 25-27.

EXTREMES, 1955-57. --Water temperatures: Maximum, 55 °F July 20, 1956; minimum, 38 °F Dec. 18, 1955

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1516.

Temperature (°F) of water, water year October 1956 to Septem

Day

2. ..................

4. ..................

5. ..................

6...................

7. ..................

8. ..................

9. ..................

10. ..................

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

P.... ...............

13. ..................

14...................

15. ..................

16...................

17...................

18. ..................

19. ..................

20. ..................

21...................

22...................

23. ..................

24...................

25...J...............

2,6. ..................

27. ..................

28. ..................

29...................

30. ..................

31...................

Average .......

October

max

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

50

50 

50 

49 

49 

49

48 

48 

47 

47 

47

47 

47 

46 

46 

46 

46

48

rain

49 

49 

48 

48 

49

49 

48 

4.9 

49 

49

48 

49 

49 

49 

49

49 

49 

49 

48 

48

47 

47 

47 

46 

47

47 

46 

46 

46 

46 

46

48

November

max

46 

46 

47 

47 

47

47 

47 

47 

47 

47

47 

47 

47 

45 

45

45 

45 

45 

44 

44

44 

44 

44 

44 

44

44 

44 

44 

43 

44

45

min

46 

46 

46 

47 

47

47 

47 

47 

47 

47

47 

47 

45 

45 

45

45 

45 

44 

44 

44

44 

44 

44 

44 

44 

44 

44 

43 

43 

43

45

December

max

44 

45 

46 

45 

45

42 

43 

43 

45 

45

45 

45 

45 

45 

46

46 

46 

46 

46 

46

45 

44 

44 

44 

44

43 

43 

43 

43 

44 

45

45

min

44 

44 

45 

45 

42

42 

42 

43 

43 

45

45 

45 

45 

45 

45 

45 

45 

46 

46 

45

44 

44 

44 

44 

43

43 

43 

43 

43 

43 

44

44

January

max

45 

45 

45 

45 

44

43 

43 

43 

43 

42

42 

42 

43 

43 

43 

43 

42 

42 

42 

42

42 

43 

43 

42 

41

40 

41 

41 

42 

42 

43

43

min

45 

45 

45 

44 

43

43 

43 

43 

42 

42

41 

42 

42 

43 

43

42 

42 

42 

41 

41

42 

42 

42 

41 

40

40 

40 

41 

41 

42 

42

42

February

max

43 

42 

43 

43 

43

43 

43 

43 

43 

43

43 

44 

44 

44 

44

44 

44 

44 

44 

43

43 

43 

42 

44 

44

45 

45 

45

44

min

42 

41 

42 

43 

43

43 

43 

43 

43 

43

43 

43 

44 

44 

44

43 

43 

43 

43 

43

43 

42 

42 

42 

44

44 

45 

43

43

March

max

45 

45 

45 

45 

45

45 

46 

46 

46 

46

46 

46 

45 

45 

45

46 

47 

47 

48 

48

47 

47 

47 

47 

47

47 

47 

47 

48 

48 

48

46

min

44 

45 

45 

45 

45

45 

45 

46 

46 

45

45 

45 

44 

43 

43 

45 

46 

46 

47 

47

47 

47 

47 

47 

47

47 

47 

47 

47 

48 

48

46

April

max

49 

49 

49 

49 

49

49 

49 

49 

50 

30

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

49 

49 

50 

51 

52 

52

49

min

48 

49 

49 

49 

49

49 

48 

48 

48 

49

49 

49 

49 

49 

48 

47 

49 

49 

49 

48

49 

48 

49 

. 48 

48

49 

50 

50 

50 

51

49
SKOKOMISH RIVER BASIN--Continued 

WEAVER CREEK NEAR POTLATCH, WASH.

LOCATION. Temperature recorder at gaging station three-quagters of a mile upstream from mouth a

RECORDS AVAILABLE. Water temperatures: April 1955 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 52°F on several days during summer months.

EXTREMES, 1955-57. Water temperatures: Maximum, 54°F on several days during summer months; min

REMARKS. Clock not operating Jan. 11-13, 26-27, Feb. 10, Feb. 17 to Apr. 7.

Temperature (°F) of water, water year October 1956 to Septe

Day

1............ .......

3.,.. ...............

4...................

5. ..................

6...................

7. ..................

8. ..................

9. ..................

10...................

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

12...................

13...................

14...................

15...................

16...................

17...................

18. ..................

19. ..................

20. ..................

21...................

22...................

24. ..................

25...................

26...................

27...................

28...................

29. ..................

30. ..................

31...................

October

max

50 

49 

50 

50 

50 

50

50 

49 

50

48 

49 

48 

49 

49

48 

48 

48 

47 

48

49 

46 

47 

47 

48 

47 

47 

47 

46 

46 

45

48

min

48 

46 

47 

46 

46 

46

48 

48 

48

46 

47 

46 

47 

48

47 

47 

46 

46 

47

46 

46 

45 

45 

46 

46 

45 

45 

45 

45 

44

46

November

max

46 

47. 

48 

48 

48 

47 

47 

47 

47 

48

48 

48 

46 

45 

46

45 

46 

46 

45 

45

45 

45 

46 

45 

45 

45 

46 

45 

45 

46

46

min

44 

45 

46 

46 

46 

46 

46 

45 

45 

47

47 

46 

44 

43 

45

44 

45 

44 

43 

43

43 

43 

44 

43 

44 

44 

44 

43 

42 

44

44

December

max

45 

46 

47 

45 

44 

43 

44 

45 

45 

46

46 

46 

46 

46 

46

46 

47 

47 

46 

46

45 

45 

46 

46 

45 

45 

45 

45 

44 

45 

46

45

min

44 

45 

44 

44 

42 

41 

42 

43 

44 

44

45 

45 

45 

45 

46

45 

46 

46 

45 

45

44 

44 

45 

45 

43 

43 

44 

44 

44 

44 

45

44

January

max

46 

45 

45 

45 

44 

45 

44 

44 

44 

44

45 

45

44 

44 

44 

43 

44

44 

45 

44 

43' 

42

43 

44 

43 

45

44

min

45 

44 

44 

43 

43 

44 

44 

43 

42 

42

44 

43

42 

41 

42 

42 

43

43 

43 

42 

41 

40

41 

41 

42 

43

43

February

max

44 

43 

45 

45 

44 

45 

45 

45 

45

45 

46 

46 

46 

46

46

"

--

min

42 

41 

43 

44 

43 

43 

43 

43 

43

44 

44 

44 

44 

43

43 

43

--

March

max min

April

max

50 

50 

48

48 

47 

48 

48 

48

49 

49 

50 

49 

49

49 

50 

49 

49 

49 

50 

51 

52 

48

--

min

46 

45 

46

46 

46 

46 

46 

46

45 

46 

46 

46 

45

46 

46 

46 

45 

46 

46 

47 

47 

47

-
NISQUALLY RIVER BASIN 

NISQUALLY RIVER NEAR NATIONAL, WASH.

LOCATION. Temperature recorder at gaging station, 100 feet downstream from railroad bridge, 1 mi

of Ashford and 3 miles upstream from Mineral Creek. 

DRAINAGE AREA . 133 square miles.

RECORDS AVAILABLE. Water temperatures: October 1951 to September 1957.

EXTREMES, 1956-57.--Water temperatures: Maximum, 63°F July 19; minimum, 33°F on several days in 

EXTREMES, 1951-57. Water temperatures: Maximum, 63°F July 19, 1957; minimum, freezing point on 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1516.

Temperature (°F) of water, water year October 1956 to Septem

Day

41

41

44

43

42

43

43

43

43

42

43

42

42

39

39

39

39

38

37

38 ,

39

39

40

41

40

40

39

41

40

40

January 

min

38

38

36

36

35

35

35

35

36

36

38

37

36

37

34

33

33

33

33

33

33

34

34

33

33

33

33

33

33

33

33

February 

max min 

33 

33

33

34

35

35

35

37

36

35

March April 

Average.
NISQUALLY RIVER BASIN--Continued 

MINERAL CREEK NEAR MINERAL, WASH.

LOCATION. Temperature recorder at gaging station three-eigliths of a mile downstream from railro

northeast of Mineral, Lewis County. 

DRAINAGE AREA.--74.3 square miles.

RECORDS AVAILABLE. Water temperatures: August 1951 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 68°F July 29; minimum, 34°F Jan. 24 to Feb. 2, 

EXTREMES, 1951-57. Water temperatures: Maximum, 73°F July 20, 1956; minimum, 33°F Jan. 31, 195

REMARKS. Thermograph tube buried in stream bed Nov. 8 to Dec. 10. Records of discharge for wat

WSP 1516.

Temperature (°F) ot water, water year October 1956 to Septe

Day

2. ..................

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. ..................

Average .......

October

max

52 

52 

52 

52 

52

52 

52 

52

54 

54

54 

52 

52 

50 

50

50 

50 

50 

49 

48 

49 

49 

48 

47 

46

46 

46 

46 

45 

45 

45

50

min

50 

51 

49 

50 

49

49 

50 

50 

52 

53

52 

51 

50 

50 

50

50 

50 

49 

47 

47 

48 

48 

47 

46 

46

46 

46 

45 

45 

45 

45

49

November

max

45 

45 

46 

46 

46

46 

46

--

min

45 

45 

45 

46 

46

46 

46

--

December

max

42 

42 

42 

42 

42

42 

43 

43 

42 

42 

42 

41 

42 

42 

40

40 

40 

40 

40 

40 

41

--

min

42 

42 

42 

42 

42

42 

42 

42 

42 

42 

41 

41 

41 

40 

39

39 

39 

39 

38 

40 

40

--

January

max

41 

41 

40 

39 

39

38 

38 

38 

38 

39

39 

40 

39 

41 

40

37 

37 

38 

36 

36 

36 

37 

37 

36 

36

36 

35 

35 

35 

34 

35

38

min

40 

40 

39 

38 

37

37 

37 

37 

37 

38

38 

38 

37 

38 

37

35 

35 

35 

35 

35 

35 

36 

35 

34 

34

34 

34 

34 

34 

34 

34

36

February

max

35 

36 

36 

36 

36

38 

37 

38 

38 

38

39 

40 

37 

37 

39

39 

39 

39 

37 

38

37 

36 

37 

39 

39

39 

41 

42

38

min

34 

34 

35 

36 

35

35 

35 

37 

36 

36

37 

37 

36 

36 

36

35 

35 

35 

35 

35

33 

36 

35 

37 

38

39 

39 

40

36

March

max

42 

41 

42 

41 

41

41 

42 

42 

41 

41

42 

40 

41 

39 

40

40 

43 

43 

44 

41 

40 

41 

42 

43 

42

44 

45 

43 

42 

43 

42

42

min

40 

41 

40 

40 

40

40 

40 

41 

40 

39

40 

39 

38 

38 

38

38 

39 

38 

39 

39

38 

38 

39 

40 

40

38 

38 

40 

41 

41 

41

39

April

max

44 

42 

43 

43 

43

42 

46 

47 

47 

44

45 

45 

46 

45 

44

45 

46 

44 

45 

46

45 

48 

46 

44 

42

48 

50 

53 

53 

52

46

min

40 

41 

40 

42 

41

40 

40 

40 

41 

42

42 

42 

42 

42 

41

40 

42 

43 

42 

42

42 

43 

42 

40 

41

42 

43 

43 

42 

45

42
408 PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLUMBIA RIVER BASIN

DUWAMISH RIVER BASIN 

GREEN RIVER NEAR PALMER, WASH.

LOCATION. At City of Tacoma Green River Pipe Line bridge about half a mile below headworks dam, 2 miles below gaging station, 4i miles downstream from North Fork and 2 

miles southeast of Palmer, King County. 

DRAINAGE AREA. 230 square miles (above gaging station). 

KECORDS AVAILABLE. Water temperatures: August 1950 to September 1957.

Sediment records: August 1950 to September 1957. 

EXTKEMES, 1956-57. Water temperatures: Maximum, 55°F Aug. 22, Sept. 12-15; minimum,

freezing point on several days during January and February. 

Sediment concentrations: Maximum daily, 779 ppm Dec. 10; minimum daily, 0.3 ppm

Jan. 26-31.

Sediment loads: Maximum daily, 28,100 tons Dec. 10; minimum daily, 0.3 ton Jan. 26-31. 

EXTREMES, 1950-57. Water temperatures: Maximum, 61°FSept. 6, 1950; minimum, freezing

point on several days during winter months. 

Sediment concentrations: Maximum daily, 1,350 ppm Dec. 9, 1953; minimum daily, 0.3 ppm

Oct. 1-10, 1954, July 11-15, Aug. 1-5, 1956, Jan. 26-31, 1957. 

Sediment loads: Maximum daily, 49,000 tons Dec. 9, 1953; minimum daily, 0.2 ton Oct. 1

to Nov. 30, 1952, Sept. 1-27, 1953, Oct. 1-10, 1954, Aug. 1-5, 1956. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in 

WSP 1516.

Temperature (°F) of water, water year October 1956 to September 1957 

^Once-daily measurement at approximately 8 a..mj

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

Average

Oct.

48

48

47

47

47

47

42

49

49

50

48

46

47

46

47

47

47

44

45

45

44

44

43

40

44

42

41

42

41

42

42

45

Nov.

42

42

42

42

42

42

42

41

42

41

41

42

40

40

40

40

42

40

38

36

38

38

38

40

40

39

38

38

42

38

40

Dec.

38

38

38

38

38

34

33

33

34

39

34

40

39

40

38

38

39

41

40

42

41

32

40

40

40

38

36

36

37

37

37

38

Jan.

38

38

38

38

36

36

37

37

37

36

36

35

34

36

32

35

34

33

33

33

32

32

33

32

32

31

33

32

33

34

34

35

Feb.

34

33

34

35

36

36

36

36

36

35

34

35

37

36

35

36

36

36

36

35

35

35

33

35

36

40

38

38

--

--

36

Mar.

38

38

37

38

38

37

35

37

37

37

37

37

36

38

37

38

38

37

38

39

37

38

35

36

37

39

38

38

38

38

39

37

Apr.

39

39

39

40

41

39

37

38

40

41

39

39

40

41

40

40

39

40

40

39

39

40

40

38

39

39

40

40

42

42

--

40

May

43

40

40

40

41

42

44

44

44

43

44

44

44

44

38

44

44

44

43

44

44

44

44

44

44

44

44

45

45

46

46

43

June

46

46

46

48

48

50

42

48

50

49

49

47

46

46

46

46

52

52

52

51

..

52

52

52

52

52

53

52

51

--

49

July

50

50

50

52

50

52

50

50

50

50

50

50

50

50

49

49

48

50

51

52

54

52

52

50

51

52

50

50

51

51

50

51

Aug.

50

50

50

51

52

52

52

52

51

50

51

50

52

52

52

54

52

52

52

54

54

55

54

54

54

54

52

53

53

54

52

52

Sept.

54

54

54

54

54

54

a3

53

52

52

53

55

55

55

55

54

52

50

49

49

50

50

50

50

50

50

50

50

50

51

--

52
DUVAMISH RIVER BASIN 

DUWAMISH RIVER BASIN Continued 

GREEN RIVER NEAR PALMER, WASH. Continued 

Suspended sediment, water year October 1956 to September 1957

Day

1......

2. .....

3. .....

4. .....

6. .....

8. .....

9. .....

10. .....

11......

12. .....

14. .....

15. .....

17. .....

19. .....

20. .....

21......

22......

24. ..... 

25. .....

26......

27. .....

29......

31......

Total.

L..... 

2...... 

3...... 

4...... 

5......

R.....

10. .....

13...... 

14. ..... 

15......

19. ..... 

20. .....

21......

22. ..... 

23. ..... 

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31...... 

Total.

October

discharge 

(cfs)

247 

220 

208 

193 

186

178 

171 

171 

171 

171

171 

171 

190 

204 

813

865 

880 

1,180 

905 

1,330

2,540 

1,690 

1,310 

1,080 

1,700

1,670 

1,380 

1,140 

1,060 

1,320 

1,170

24, 685

Suspended sediment

Mean 

concentration 

(ppm)

> 2.2

40

54 

25 

34 

8 

102

23

K,

"

--

Tons 

per 

day

1.2

2.0

1.1

sallO

126 

s74 

108 

20 

s385

158 

23

19

1,203.4

January

1,100 

1,060 

1,010 

950 

905

880 

865 

850 

810 

795

790 

775 

750 

725 

710

665 

635 

615 

590 

560

520 

510 

480 

460 

440

400 

400 

400 

400 

420 

460

20, 930

j,<

> 3.9

1.1 

2.7 

7.9 

4.0 

1.6

.3

88.3

November

discharge 

(cfs)

1,020 

880 

820 

830 

875 .

1,300 

1,280 

1,140 

1,000 

990

1,020 

1,110 

1,310 

1,160 

1,080

1,330 

3,820 

2,450 

1,770 

1,440

1,240 

1,110 

1,020 

940 

880

820 

760 

700 

650 

615

35, 360

Suspended sediment

Mean 

concentration 

(ppm)

> 2.2

59 

143 

10

}"

Y 3.5

--

Tons 

per 

day

4.3 

6.5

6.7

s389 

si, 550 

66

7.5

7.7 

e5

2,178.5

February

492 ' 

470 

450 

460 

510

600 

570 

570 

650 

600

555 

523 

514 

546 

565

600 

625 

685 

700 

650

590 

560 

550 

690 

1,130

2,190 

2,210 

1,830

21, 085

1"

I 2.6 

> 3.9

28

60 

25 

12

--

1.9 

4.2 

5.7

6.0

7.7

85

355 

149 

59

767.8

December

Mean 

discharge 

(cfs)

575 

565 

735 

845 

725

640 

595 

600 

4,020 

13,100

7,970 

5,500 

7,950 

6,080 

5,320

6,050 

5,060 

7,030 

4,530 

3,460

2,830 

2,350 

2,270 

2,370 

2,110

1,830 

1,600 

1,430 

1,300 

1,220 

1.160

101,820

Suspended sediment

Mean 

concentration 

(ppm)

1.5 

1.5 

2.0 

392 

779

255 

125 

200 

90 

42

53 

40 

90 

43 

31

V 2.7

-

Tons 

per 

day

2.8

2.6 

2.4 

3.2 

s9,260 

s 28, 100

5,490 

1,860 

4,290 

1,480 

603

866 

546 

1,710 

526 

290

33 

10

55,268.2

March

1,590 

1,410 

1,260 

1,130 

1,030

985 

2,840 

2,540 

2,300 

1,920

1,580 

1,380 

1,180 

1,070 

1,020

970 

915 

895 

925 

1,080

1,100 

1,000 

915 

955 

965

905 

875 

900 

1,030 

1,240 

2,010

39,915

V 5.5

25 

149

I 2.0 

I 3.2

I 2.3

.8 

14 

45

19

66 

si, 150

26 

5.6 

8.6

5.7

2.1

sa50 

244

1,838.7

e Estimated.

s Computed by subdividing day.

a Computed from estimated concentration graph.
410 PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLUMBIA RIVER BASINS

DUWAMISH RIVER BASIN Continued

GREEN RIVER NEAR PALMER, WASH.~Continued

Suspended sediment*; water year October 1956 to September 1957 Continued

Day

1......

3. .....

4. .....

5. .....

6......

8. .....

9. .....

11......

12......

16......

17. .....

24. .....

25. .....

26......

27......

30. .....

31......

Total .

2. ..... 

3...... 

4. ..... 

5......

&.....

10. .....

13......

15...... 

16. .....

18. ..... 

19

20. .....

24. ..... 

25......

26. ..... 

27. ..... 

28. ..... 

29. ..... 

30. ..... 

31. .....

Total.

April

Mean 

discharge 

(cfs)

1,950 

1,720 

1,720 

2,140 

4,560

3,460 

2,460 

2,020 

1,880 

1,900

1,850 

1,810 

1,770 

1,860 

1,940

1,700 

1,520 

1,440 

1,400 

1,320

1,260 

1,190 

1,200 

1,300 

1,210

1,120 

1,110 

1,410 

2,540 

3,510

56, 270

Suspended sediment

Mean 

concentration 

(pp'm)

I 2.0

27 

163

25

},,

> 2.0

1-

I 2.0

2.1 

6.0 

24 

48

--

Tons 

per 

day

9.7

156 

2,010

234 

11

9.8 

15

6.5

6.3 

23 

165 

455

3,289.9

July

375 

360 

350 

340 

330

325 

320 

290 

320 

300

290 

280 

260 

290 

350

320 

300 

300 

270 

250

250 

240 

250 

240 

240

230 

230 

230 

225 

220 

215

8,790

0.8 

.7 

2.3 

4.7 

2.8 

2.9

Total discharge for year (cfs-< 

Total load for year (tons) ....

0.8 

.6 

1.8 

3.7 

1.8 

1.8

54.3

May

Mean 

discharge 

(cfs)

3,300 

2,620 

2,250 

2,070 

2,140

2,410 

2,470 

2,380 

2,220 

1,990

1,730 

1,540 

1,440 

1,340 

1,200

1,100 

1,090 

1,150 

1,230 

1,160

1,130 

1,190 

1,110 

1,020 

955

915 

865 

825 

790 

785 

770

47,185

Suspended sediment

Mean 

concentration 

(ppm)

19

}-

}"

> 2.6

-

}"

> 2.8

--

Tons 

per 

day

169 

27

26 

9.3 

5.0

3.1 

6.1

551.5

August

210 

209 

206 

222 

209

209 

243 

243 

222 

212

218 

218 

209 

203 

200

197 

194 

194 

188 

185

182 

177 

177 

177 

177

174 

171 

171 

177 

174 

168

6,116

}"

> 3.5

},..

}" 

}"

}"

--

3.8 

2.1 

2.0 

2.4 

.4 

2.0

65.5

June

Mean 

discharge 

(cfs)

750 

720 

665 

615 

585

605 

550 

514 

482 

464

555 

560 

523 

575 

740

685 

610 

560 

518 

487

523 

460 

415 

384 

370

402 

442 

410 

402 

384

15,955

Suspended sediment

Mean 

concentration 

(ppm)

I 2.8 

V 3.6 

> 3.7 

> 2.2 

I 3.2

} :

--

Tons 

per 

day

5.0 

5.1 

5.9 

3.4 

3.7 

2.3

127.0

September

165 

163 

163 

160 

157

157 

165 

163 

157 

157

154 

152 

152 

149 

147

147 

152 

157 

154 

147

147 

147 

144 

147 

147

147 

147 

149 

144 

141

4,578

> 3.0 

V 3.5

}-

> 3.0

}"

h--

.....................

1.3 

1.5 

2.0 

1.2 

1.0 

1.8

44.0

52,689 

35,477.1
DUWAMISH RIVER BASIN Continued 

GREEN RIVER NEAR PALMER, WASH. Continued

Particle-size analyses of suspended sediment, water year October 1956 t

(Methods of analysis: B, bottom withdrawal tube; C, chemically dispersed; M, 

N, in native water; P, pipet; S, sieve; V, visual accumulation tube; W, i

Date 

of

collection

Nov. 16, 1956 . . .

Feb. 25, 1957 . . .

Mar. 7 .........

Time

7:00 p.m. 

5:00 a.m. 

12:00 m. 

12:00 m. 

8:00 a.m. 

4:00 p.m.

9:00 p.m. 

8:00 a.m. 

12:00 m. 

9:00 p.m. 

4:00 p.m.

Discharge 

(cfs)

1,340 

4,630 

3,900 

2,880 

13,800 

13,000

1,550 

2,180 

2,190 

1,230 

2,980

Water 

temperature 

(T)

42 

42 

42 

34 

39 

37

38 

38 

38 

35 

37

Suspended sed

Concentration 

of sample 

(PPm)

66 

243 

117 

209 

948 

650

80 

47 

35 

44 

44

Concentration 

of suspension 

analyzed 

(ppm)

470 

1,300 

585 

928 

2,910 

2,050

682 

408 

240 

275 

282

Percent fine

0.002 0.004

49 

43 

30 

24 

23 

28

27 

29 

45 

57 

37

0.008 0.016

77 

59 

45 

38 

44 

54

59 

49 

75 

82 

51

0
DUWAMISH RIVER BASIN--Continued

GREEN RIVER NEAR AUBURN, WASH.

LOCATION. Temperature recorder at gaging station, li miles east of Auburn, King County, and 2 m

DRAINAGE AREA. 382 square miles (excludes 4 square miles in the vicinity of Youngs Lake, flow f

about 1935).

KECORDS AVAILABLE.--Water temperatures: March 1952 to September 1957.

EXTREMES, 1952-57.--Water temperatures: Maximum, 66°F July 19, 20, 22-25, 1956; minimum, 33°F F

REMARKS.--Thermograph not operating Oct. 1 to May 26, June 23 to July 22, Aug. 27 to Sept. 17. 

September 1957 given in WSP 1516.

Temperature (°F) of water, water year October 1956 to Septe

Day

January February 

min

March April 

Average.
LAKE WASHINGTON BASIN

CEDAR RIVER NEAR LANDSBURG, WASH.

LOCATION. Temperature recorder at gaging station, 2 miles upstream from Landsburg, and intake of 

of Maple Valley, King County, 5 miles downstream from Taylor Creek, and 12 miles downstream fr

DRAINAGE AREA. 125 square miles, excludes that of Rock Creek. 

RECORDS AVAILABLE. Water temperatures: August 1953 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 58°F on several days during summer montbs; minim

EXTREMES, 1953-57. Water temperatures: Maximum, 64°F Aug. 19, 1953; minimum, 36°F on several day

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1516.

Temperature (°F) of water, water year October 1956 to Septem

Day

3...................

4...................

5. ..................

6. ..................

7...................

8. ..................

9. ..................

10...................

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

12...................

13...................

15...................

16...................

17...................

18. ..................

20...................

21...................

22...................

23...................

24...................

25...................

26...................

27...................

28. ..................

29. ..................

30...................

31...................

October

max

52 

52 

52 

52 

52

51 

52 

52 

52 

52

52 

51 

50 

50 

50

51 

51 

50 

50 

49 

49 

49 

47 

46 

46

46 

46 

46 

46 

46 

46

50

min

51 

52 

51 

52 

51

51 

51 

52 

52 

52

51 

50 

50 

49 

49

50 

50 

50 

49 

49 

49 

47 

46 

46 

46

46 

46 

46 

46 

46 

45

49

November

max

45 

45 

45 

46 

46

46 

46 

45 

45 

45

45 

45 

45 

44 

44

44 

43 

42 

42 

42 

42 

42 

42 

43 

43

43 

42 

42 

42 

42

44

min

45 

45 

45 

45 

46

46 

45 

45 

45 

45

45 

45 

44 

44 

44

43 

42 

42 

42 

42 

42 

42 

42 

42 

42

42 

42 

42 

42 

41

43

December

max

42 

43 

43 

42 

42

40 

40 

40 

41 

42

42 

41 

42 

42 

42

42 

42 

42 

42 

42 

42 

42 

42 

42 

42

42 

42 

42 

42 

42 

43

42

min

41 

42 

42 

42 

40

40 

39 

39 

39 

41

41 

41 

41 

42 

42

42 

42 

42 

42 

42 

42 

42 

42 

42 

42

42 

42 

41 

41 

41 

42

41

January

max

43 

42 

42 

42 

42

42 

42 

41 

41 

41

41 

41 

41 

41 

41

39 

39 

38 

39 

40 

40 

39 

39 

36 

36

38 

38 

39 

39 

39 

41

40

min

42 

42 

42 

41 

41

41 

41 

41 

41 

40

40 

40 

40 

40 

39

39 

38 

38 

38 

39 

37 

37 

36 

36 

36

36 

36 

37 

37 

37 

38

39

February

max

41 

40 

41 

42 

41

41 

41 

41 

41 

41

42 

43 

42 

42 

41

43 

43 

42 

42 

41 

41 

41 

41 

42 

41

41 

41 

40

41

min

37 

37 

40 

38 

38

38 

39 

38 

38 

40

39 

39 

39 

39 

39

39 

39 

39 

38 

38 

38 

38 

38 

40 

40

40 

40 

39

39

March

max

41 

40 

40 

41 

41

41 

40 

41 

41 

42

41 

41 

41 

41 

42

42 

43 

42 

44 

44 

42 

42 

43 

44 

44

43 

43 

43 

43 

46 

45

42

mil)

39 

40 

39 

39 

39

39 

39 

40 

40 

40

40 

40 

40 

40 

40

41 

41 

40 

41 

42 

41 

41 

42 

42 

42

42 

41 

42 

43 

43 

44

41

April

max

45 

43 

43 

43 

43

42 

43 

44 

44 

43

44 

44 

45 

45 

44

45 

45 

44 

46 

45 

44 

45 

44 

44 

44

45 

46 

48 

50 

50

45

min

43 

43 

43 

43 

42

42 

42 

42 

42 

43

43 

43 

44 

44 

44

44 

44 

44 

44 

44 

44 

44 

44 

44 

44

44 

44 

45 

46 

47

44
SNOHOMISH RIVER BASIN 

WALLACE RIVER AT GOLD BAR, WASH.

LOCATION. Temperature recorder at gaging station, 30 feet downstream from highway bridge, a quar

li miles upstream from Olney Creek. 

DRAINAGE AREA. 19.8 square miles.

July 1955 to September 1957. 

Minimum, freezing point Feb. 24-29.

 ...._, , .! .. *.* *....,,-.-.. ~~. Maximum recorded, 66°F Aug. 12, 18-22, 1956; minimum, fr

REMARKS. Thermograph tube out of water Oct. 1-27, Nov. 29 to Dec. 2, Jan. 3-22, June 20 to Sept. 

to September 1957 given in WSP 1516.

RECORDS AVAILABLE. Water temperatures 

EXTREMES, 1956-57. Water temperatures 

EXTREMES, 1955-57. Water temperatures:

Temperature (°F) of water, water year October 1956 to Septem

Day

2...................

4...................

S. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

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

13. ..................

14...................

15. ..................

16. ..................

17...................

18...................

20. ..................

21...................

22. ..................

23...................

24. ..................

25. ..................

26...................

27. ..................

28. ..................

29...................

30. ..................

31...................

Average .......

October

max

--

43 

42 

42 

42

mln

42 

42 

42 

42

November

max

44 

44 

47 

45 

45

44 

45 

45 

45 

46

44 

45 

43 

43 

43 

44 

42 

42 

41 

41

42 

41 

43 

43 

43 

42 

41 

42

43

mln

42 

42 

43 

43 

44

43 

44 

44 

44 

43

43 

42 

42 

42 

43 

41 

41 

41 

40 

41

41 

41 

41 

42 

42 

41 

40 

41

42

December

max

45 

40 

39

36 

36 

40 

41 

42

41 

42 

42 

42 

42 

42 

42 

42 

43 

43

41 

41 

42 

41 

41 

41 

41 

41 

41 

42 

43

41

mln

40 

39 

36

35 

33 

33 

39 

41

41 

41 

41 

41 

41 

41 

42 

42 

42 

41

40 

41 

40 

40 

41 

41 

41 

41 

41 

41 

42

40

January

max

42 

41 

41

37 

34 

34 

35 

35 

35 

34 

35 

37

mln

41

41 

40

34 

32 

32 

32 

32 

32 

32 

34 

35

February

max

38 

37 

37 

38 

39

39 

39 

39 

41 

40

43 

43 

42 

42 

41

41 

41 

41 

41 

39

39 

37 

39 

39 

39 

39 

41 

42

40

min

37 

36 

36 

37 

38

39 

38 

38 

39 

39

40 

40 

40 

40 

39

39 

39 

39 

39 

37

36 

36 

36 

38 

38 

39 

39 

40

38

March

max

42 

41 

43 

42 

41

41 

41 

41 

41 

41

43 

41 

42 

41 

43 

42 

44 

45 

45 

44

41 

42 

43 

42 

41 

44 

46 

46 

45 

46 

45

43

mln

40 

41 

41 

41 

40

40 

39 

40 

40 

40

41 

40 

40 

41 

41

42 

41 

41 

42 

39

39 

40 

41 

41 

40 

41 

41 

43 

43 

43 

42

41

April

max

44 

44 

44 

44 

42

43 

46 

48 

48 

45

47 

46 

47 

45 

44 

47 

47 

45 

45 

49

45 

47 

45 

43 

43 

46 

49 

52 

50 

49

46

min

42 

43 

43 

42 

41

41 

43 

42 

43 

44

44 

44 

44 

43 

42 

42 

43 

43 

43 

42

43 

44 

43 

41 

42 

43 

44 

45 

43 

44

43
STILLAGUAMISH RIVER BASIN 

JIM CREEK NEAR ARLINGTON, WASH.

LOCATION. Temperature recorder at gaging station at abandoned bridge, 1J miles upstream from m

County.

DRAINAGE AREA. 48.9 square miles.

RECORDS AVAILABLE. Water temperatures: October 1951 to April 1957 (discontinued).

EXTREMES, 1951-57. Water temperatures: Maximum, 73°F July 19, 20, 1956; minimum, freezing poi

REMARKS. Recorder stopped Jan. 25-30. Records of discharge for October 1956 to April 1957 giv

Temperature (°F) of water. October 1956 to April 19

Day

1...................

2. ..................

3...................

4...................

5. ..................

6. ..................

7. ..................

8...................

9. ..................

10...................

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

12...................

13...................

15...................

16...................

17...................

18...................

19...................

20. ..................

21...................

22...................

23...................

24...................

25...................

26...................

27...................

28...................

29...................

30. ..................

31...................

Average .......

October

max

55 

54 

53 

53 

52

53 

54 

53 

55 

54

52 

52 

50 

49 

50

50 

50 

49 

48 

48

48 

47 

47 

46 

47

46 

46 

45 

45 

45 

45

50

min

51 

52 

49 

52 

48

48 

50 

51 

53 

52

51 

49 

48 

48 

48 

49 

49 

48 

48 

48

47 

47 

46 

46 

46 

46 

45 

44 

45 

45 

45

48

November

max

45 

45 

45 

46 

46

46 

46 

46 

46 

47

45 

46 

44 

43 

43 

43 

43 

43 

41 

41

41 

41 

41 

40 

40

39 

40 

39 

38 

40

43

min

44 

44 

44 

44 

46

45 

45 

45 

45 

45

45 

45 

43 

43 

43

43 

42 

41 

40 

41

40 

40 

40 

39 

39

38 

39 

37 

37 

38

42

December

max

39 

41 

43 

39 

39

37 

36 

38 

41 

42

42 

42 

42 

43 

43

43 

43 

43 

43 

43

42 

42 

42 

42 

42

41 

41 

40 

39 

40 

41

41

min

38 

39 

39 

39 

37

35 

35 

36 

38 

41

42 

42 

42 

42 

43

43 

43 

43 

43 

41

41 

41 

42 

42 

41 

40 

40 

39 

38 

39 

40

40

January

max

41 

41 

41 

40 

39

38 

38 

38 

38 

39

39 

39 

39 

38 

38 

37 

35 

35 

35 

35

35 

36 

36 

35

33

38

min

41 

41 

40 

39 

37

37 

38 

38 

38 

38

39 

39 

37 

36 

37

34 

33 

33 

34 

34

34 

35 

35 

33

33

37

February

max

34 

34 

35 

35 

35

37 

37 

37 

39 

38

39 

40 

39 

39 

39

39 

39 

39 

38 

38

38 

38 

38 

39 

40 

41 

43 

42

38

min

33 

34 

34 

35 

35

35 

36 

37 

37 

38

38 

39 

38 

38 

38 

37 

37 

37 

37 

37

35 

37 

36 

38 

38

40 

41 

40

37

March

max

42 

42 

43 

43 

43

42 

42 

43 

43 

43

44 

43 

45 

42 

44

43 

44 

46 

47 

46

43 

43 

44 

45 

45 

46 

47 

45 

47 

48 

46

44

min

40 

42 

42 

42 

42

42 

41 

42 

41 

42

42 

41 

42 

42 

42

43 

42 

41 

42 

42

42 

42 

42 

42 

41 

43 

41 

42 

45 

43 

44

42

April

max

48 

46 

47 

45 

44

47 

48 

51 

51 

48

49 

49 

49 

50 

49 

52 

52 

50 

49 

53

49 

52 

49 

49

49

min

44 

45 

45 

44 

43

43 

44 

43 

44 

45

46 

46 

45 

46 

45

44 

46 

47 

47 

44

45 

47 

46 

45

45
STILLAGUAMISH RIVER BASIN--Continued 

NORTH FORK STILLAGUAMISH RIVER NEAR DARRINGTON

LOCATION. Temperature recorder at gaging station at highway bridge, 1 mile downstream from Squi

Snohomish County.

DRAINAGE AREA. 82.2 square miles.

RECORDS AVAILABLE. Water temperatures: March 1952 to September 1957 (discontinued). 

EXTREMES, 1956-57. Water temperatures: Maximum, 70°F Sept. 12, 13.

EXTREMES, 1952-57. Water temperatures: Maximum, 70°F Sept. 12, 13, 1957; minimum, 35°F on seve

REMARKS. Thermograph tube buried in stream bed Oct, 1 to July 17. Records of discharge for wat

WSP 1516.

Temperature (°F) of water, water year October 1956 to Septe

Day

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...................

Average .......

October

max min

November

max min

December

max min

January

max min

February

max min

March

max min

April

max min
STILLAGUAMISH RIVER BASIN--Continued 

PILCHUCK CREEK NEAR BRYANT, WASH.

LOCATION. Temperature recorder at gaging station 500 feet upstream from highway bridge and 2 mi

DRAINAGE AREA. 49.7 square miles.

RECORDS AVAILABLE.--Water temperatures: March 1952 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 68°F Aug. 5.

EXTREMES, 1952-57.--Water temperatures: Maximum, 68°F Aug. 5, 1957; minimum, 33°F Mar. 7, 1955.

REMARKS.--Thermograph not operating Oct. 1 to Feb. 11. Records of discharge for the water year 

Temperature (°F) of water, water year October 1956 to Septe

Day

2...................

3...................

4. ..................

5. ..................

8...................

7...................

8...................

9. ..................

10. ..................

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

12...................

13...................

15...................

16...................

17...................

18. ..................

19. ..................

20. ..................

21...................

22...................

23. ..................

24...................

25...................

26...................

27...................

28. ..................

29. ..................

30. ..................

31...................

Average .......

October

max min

November

max min

December

max min

January

max min

February

max

37 

37 

37 

37

37 

37 

37 

37 

37

36 

35 

36 

36 

37

37 

38 

38

--

min

37 

37 

37 

37

37 

37 

37 

37 

36

35 

35 

35 

36 

36

37 

37 

38

--

March

max

39 

39 

39 

39 

39

39 

39 

39 

39 

39

40 

40 

39 

39 

40

40 

40 

41 

42 

42

40 

40 

40 

40 

40

40 

42 

42 

43 

43 

43

40

min

38 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

38 

38 

39 

39

40 

40 

40 

41 

40

40 

40 

40 

40 

40

40 

40 

41 

41 

41 

42

40

April

max

42 

42 

42 

42 

42

41 

42 

44 

45 

45

44 

44 

45 

45 

45

45 

47 

47 

46 

46

46 

48 

48 

46 

45 

47 

48 

53 

54 

55

46

min

41 

42 

42 

42 

41

41 

41 

41 

42

44

44 

44 

44 

45 

44

43 

45 

46 

46

44

46 

46 

46 

44 

45

45 

47 

48 

50 

51

44
SKAGIT RIVER BASIN

SKAGIT RIVER ABOVE ALMA CREEK, NEAR MARBLEM

LOCATION Temperature recorder at gaging station, three-quarters of a mile upstream from Alma 

DRAINAGE AREA. 1,260 square miles, approximately, of which 400 square miles is in Canada.

RECORDS AVAILABLE. Water temperatures: January 1953 to September 1957.

EXTREMES 1956-57. Water temperatures: Maximum, 52°F Sept. 1-3, 1957; minimum, 37 F on many d

EXTREMES! 1953-5?. Water temperatures: Maximum, 53°F Sept. 3, 5, 1955; minimum, 35'F Mar. 1, 

REMARKS.--Recorder stopped Oct. 1-10. Records of discharge for water year October 1956 to Sept

Day

2. ..................

3...................

4. ..................

5. ..................

6. ..................

7...................

8. ..................

9. ..................

10...................

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

12...................

13. ..................

14. ..................

15...................

16. ..................

17...................

18. ..................

20. ..................

21. ..................

22. ..................

23. ..................

25. ..................

26. ..................

27...................

28. ..................

29. ..................

30. ..................

31. ..................

October

max

"

--

49 

49 

49 

49 

49 

48

48 

48 

48 

48

47

47 

47 

47 

47 

48

48 

48 

48 

47 

48 

48

min

49 

49 

49 

49 

48 

47

47 

47 

47 

47 

46

47 

46 

47 

47 

47

47 

47 

46 

47 

47 

47

November

max

48 

48 

48 

48

47

47 

48 

48 

48

47

46 

47 

47 

47 

47

47 

46 

45 

45 

45

45 

45 

45 

45 

45

45 

45 

45 

45 

45

46

min

47 

47 

47 

47 

47

47 

47 

47 

47 

46

46 

46 

47 

47 

47

46 

45 

44 

44 

45

45 

45 

44 

44 

44

45 

45 

45 

45 

45

46

December

max

45 

45 

45 

44 

43

43 

42 

42 

42 

41

42 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

42 

42

42

min

45 

45 

44 

43 

43

42 

42 

42 

40 

40 

41 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

42 

42

42

January

max

42 

42 

42 

42 

42

42 

41 

41 

41 

41

41 

41 

41 

40 

40

40 

39 

39 

39 

39

39 

39 

39 

38 

38

38

37 

37 

37 

37 

37

40

min

42 

42 

42 

42 

42

41 

41 

41 

41 

41

41 

41 

40 

40 

40

39 

39 

39 

39 

39

39 

39 

38 

38 

38

37 

37 

37 

37 

37 

37

40

February

max

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

37

37

min

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

37

37

March

max

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

37 

37 

37

39 

38 

38 

38 

38

38 

38 

38 

38 

38

38 

38 

38 

38 

38 

38

38

min

37 

37 

37 

37 

37

37 

37 

37 

37 

37 

37 

37 

37 

37 

37

37 

88 

37 

37 

38

38 

38 

38 

38 

38

38 

38 

38 

38 

38 

38

37

April

max

38 

38 

38 

38 

38

39 

39 

39 

40 

39

39 

39 

39 

40 

40

39 

40 

39 

39 

40

40 

40 

39 

40 

39

39 

41 

44 

42 

42

40

min

38 

38 

38 

38 

38

38 

38 

38 

39 

39

39 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

40 

40 

39

39
SKAGIT RIVER BASIN Continued

CASCADE RIVER AT MARBLEMOUNT, WASH.

LOCATION. Temperature recorder at gaging station, li miles downstream from Boulder Creek, 2 mi

upstream from mouth. 

DRAINAGE AREA. 171 square miles.

RECORDS AVAILABLE. Water temperatures: May 1952 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 56°F Aug. 18.

EXTREMES, 1952-57. Water temperatures: Maximum, 57°F on several days during summer months; mi

REMARKS. Thermograph tube out of water Jan. 24 to Feb. 23. Records of discharge for water yea

Temperature (°F]

Day

2. ..................

3...................

4...................

5. ..................

6...................

7. ..................

8. ..................

9. ..................

10. ..................

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

12...................

13. ..................

14...................

15...................

16...................

18...................

19...................

20. ..................

21...................

22. ..................

23...................

24. ..................

25...................

26...................

27. ..................

28. ..................

29. ..................

31...................

October

max

48

49 

48 

48 

48

47 

48 

49 

49 

49

49 

48 

47 

46 

46

46 

46 

46

45 

45 

45 

44 

44 

44 

44

44 

44 

43 

43 

43 

43

46

min

48 

48 

47 

47 

46

46 

47 

48 

49

49

48 

47 

46 

46 

46

46 

46 

45 

45 

45 

44 

43 

44 

43 

43

43 

43 

42 

43 

42 

42

45

November

max

42 

42 

42 

43 

43

44 

44 

44 

44 

44

44 

43 

43 

41 

41

41 

41 

41 

39 

39

40 

40 

40 

40 

40 

40 

40 

40 

40 

40

42

min

42 

42 

42 

42 

43

43 

44 

44 

44 

44

43 

42 

41 

41 

41

41 

41 

39 

38 

39 

39 

39 

40 

40 

40

40 

40 

40 

40 

40

41

December

max

40 

41 

41 

41 

38

36 

36 

36 

37 

39

39 

40 

40 

40 

40

41 

41 

41 

41 

41

40 

40 

40 

40 

40

40 

40 

40 

40 

40 

41

40

min

39 

40 

41 

38 

36

35 

35 

36 

36 

37

39 

39 

40 

40 

40

40 

41 

41 

41 

40

40 

40 

40 

40 

40

40 

40 

40 

40 

40 

40

39

January

max

41 

41 

40 

39 

38

38 

38 

38 

38 

38

38 

39 

39 

37 

37

35 

35 

35 

35 

36 

35 

36 

35

--

min

41 

40 

39 

38 

37

37 

38 

38 

38 

38

38 

38 

37 

36 

35

34 

35 

35 

35 

35

34 

35 

35

--

of water, water year October 1956 to Sept

February

max

34 

36

36 

38 

38

--

min

33 

34

36 

36 

37

--

-

March

max

38 

38 

39 

39 

39

38 

39 

38 

39 

39

39 

38 

39 

39 

39

39 

41 

40 

41 

41

39 

39 

40 

40 

40

40 

41 

40 

40 

42 

42

40

min

37 

38 

38 

38 

38

38 

38 

38 

38 

38

38 

37 

38 

38 

38

39 

39 

39 

39 

39

38 

38 

39 

39 

39

39 

38 

38 

39 

40 

40

38

April

max

41 

41 

40 

40 

40

43 

43 

43 

43 

43

42 

42 

43 

42 

42

42 

43 

42 

44 

44

42 

43 

42 

42 

41

42 

42 

46 

45 

43

42

min

40 

40 

40 

40 

40

39 

40 

39 

39 

40

40 

40 

40 

41 

40

39 

40 

40 

41 

40

41 

41 

41 

39 

40

40 

41 

41 

41 

40

40
PEND OREILLE RIVER BASIN 

BLACKFOOT RIVER NEAR BONNER, MONT.

LOCATION. Temperature recorder at gaging station, 5 miles northeast of Bonner, Missoula County

upstream from mouth. 

DRAINAGE AREA. 2,290 square miles.

RECORDS AVAILABLE. Water temperatures: October 1955 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 69°F July 11, 12, Aug. 5, 10, 11, 17, 19; min

and February.

EXTREMES, 1955-57. Water temperatures: Maximum, 70°F July 23-25, 30, 1956; minimum, freezing 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1516.

Temperature (°F) of water, water year October 1956 to Septem

/Continuous water-stage recorder with temperature attach

Day

2. ..................

3...................

4...................

5. ..................

6. ..................

7. ..................

8...................

9. ..................

10. ..................

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

12...................

13. ..................

14. ..................

15. ..................

16. ..................

17...................

18...................

19...................

20. ..................

21...................

22. ..................

23. ..................

25. ..................

26. ..................

27. ..................

28...................

29. ..................

30. ..................

31...................

Average .......

October

max

52 

52 

52 

51 

52

51 

50 

51 

50 

49

50 

49 

48 

46 

44

46 

48 

47 

46 

45 

44 

43 

42 

42 

41

41 

41 

40 

40 

38 

39

46

min

47 

46 

47 

47 

48

46 

46 

45 

45 

47

47 

48 

46 

43 

43

43 

45 

45 

44 

42 

42 

40 

40 

41 

40

40 

40 

39 

38 

38 

38

43

November

max

39 

39 

38 

38 

38

39 

39 

39 

38 

38

40 

40 

39 

37 

38

37 

35 

36 

37 

36 

36 

35 

35 

34 

34

34 

34 

34 

34 

34

37

min

37 

36 

36 

36 

37

38 

38 

38 

37 

36

37 

38 

37 

37 

36

35 

34 

35 

36 

36 

34 

34 

33 

33 

33

34 

34 

34 

34 

34

36

December

max

35 

34 

33 

35 

36

36 

36 

36 

34 

33

32 

33 

33 

32 

32

32 

33 

32 

32 

32 

32 

32 

32 

32 

32

33 

32 

34 

34 

35 

34

33

min

34 

32 

32 

33 

35

36 

33 

34 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32 

32 

32 

32 

32

32 

32 

32 

33 

34 

33

33

January

max

34 

34 

34 

34 

35

34 

34 

36 

36 

36

35 

34 

35 

35 

37

38 

39 

39 

38 

36 

36 

37 

37 

38 

40

40 

40 

38 

38 

37 

35

36

min

33 

33 

33 

34 

34

34 

34 

34 

36 

35

34 

33 

33 

35 

35

37 

37 

37 

36 

35 

35 

36 

36 

37 

38

38 

38 

37 

37 

35 

34

35

February

max

35 

36 

35 

35 

34

33 

34 

34 

33 

35

35 

34 

34 

33 

34

35 

35 

35 

36 

37 

36 

37 

36 

34 

33

33 

33 

35

35

min

34 

35 

35 

34 

33

33 

33 

33 

33 

33

33 

32 

32 

32 

32

33 

32 

32 

33 

36 

35 

36 

34 

32 

32

32 

32 

32

33

March

max

35 

36 

35 

36 

38

37 

36 

36 

35 

35

37 

37 

37 

38 

37

37 

37 

38 

38 

38 

38 

38 

40 

40 

39

39 

41 

41 

40 

42 

40

38

min

33 

33 

34 

34 

36

36 

35 

35 

34 

35

35 

36 

36 

36 

36

35 

35 

36 

36 

36 

36 

37 

37 

38 

38

38 

38 

38 

39 

39 

38

36

April

max

40 

42 

42 

42 

41

41 

41 

44 

46 

44

43 

41 

43 

44 

44

45 

46 

46 

48 

48 

46 

46 

47 

45 

44

46 

48 

51 

52 

51

45

min

38 

38 

39 

39 

40

40 

39 

39 

41 

41

39 

39 

39 

41 

41

41 

42 

42 

44 

45 

44 

43 

44 

44 

42

42 

42 

46 

48 

48

42
COLUMBIA RIVER MAIN STEM

COLUMBIA RIVER AT INTERNATIONAL BOUNDARY

LOCATION. At cableway 2.2 miles downstream from gaging station and international boundary, 2.7 mi

miles upstream from Northport, Stevens County, Wash.

DRAINAGE AREA. 59,700 square miles, approximately (above gaging station). 

RECORDS AVAILABLE. Chemical analyses: February 1910 to January 1911, November 1951 to September 

Water temperatures: November 1951 to September 1957.

EXTREMES, 1956-57. Dissolved solids: Maximum, 103 ppm Dec. 1-31, Feb. 1-28; minimum, 72 ppm Aug. 

Hardness: Maximum, 89 ppm Dec. 1-31; minimum, 64 ppm July 1-5, Aug. 12-31.

Specific conductance: Maximum daily, 181 micromhos Jan. 15, Feb. 22; minimum daily, 126 micromh

EXTREMES, 1951-57. Dissolved solids: Maximum, 110 ppm Apr. 11-20, 1953; minimum, 72 ppm Aug. 12-

Hardness: Maximum, 92 ppm Mar. 1-10, 1953; minimum, 61 ppm Aug. 1-13, 1955.

Specific conductance: Maximum daily, 192 micromhos Dec. 3, 1955; minimum daily, 126 micromhos J

Water temperatures: Maximum, 69°F Aug. 31, 1955; minimum, freezing point Jan. 2, 11, 1952, Jan. 

REMARKS. Values reported for dissolved solids less than 1,000 ppm are residues on evaporation at 

determined constituents. Records of specific conductance of daily samples available in distric

water year October 1956 to September 1957 given in WSP 1516. No appreciable inflow between samp

heavy local runoff.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-31, 1956..

Jan. 1-31, 1957 ..

Mar. 1-31 .......

Aug. 12-31 ......

Weighted average a

Weighted average 6

Mean 

discharge 

(cfs)

59,680 

52,490 

43, 060 

36,830

41,540

53, 100 

258, 000 

278,000 

178,000 

76,960 

56, 400

95,440

95,880

Silica 

(SiO,)

7.4

6.2 

5.1

"

"

Iron 

(Fe)

0.01

.01 

.00

"

-

Calcium 

(Ca)

26

21 

19

--

--

Magnesium 

(Mg)

5.3

5.0 

4.1

"

"

Sodium 

(Na)

1.9 

2.2 

2.3 

2.0

2.1

1.7 

1.7 

1.6 

1.3 

1.4 

1.6

1.8

1.7

Potassium 

(K)

0.8

.9 

.8

"

"

Bicarbonate 

(HCO.)

81 

87 

89 

88 

88 

84

75 

72 

70 

68 

64 

69

75

74

Suit ate 

(SO,)

17

13 

12

"

--

Chloride 

(Cl)

0.5

.5 

.5 

.5 

.5 

.2

.2 

.2 

.2

.5

0.3

0.3

Fluoride 

(F)

0.2

.2 

.1

"

-

Nitrate 

(NO,)

0.6

.6 

.6

"

"

Boron 

(B)

0.02

.02 

.01

"

"

a Represents 82 percent of runoff for water year October 1956 to September 1957.

b Includes estimated data for missing periods. Represent 100 percent of runoff for water year October 1956 to September 195
PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLUMBIA RIVER BASIN

COLUMBIA RIVER MAIN STEM Continued 

COLUMBIA RIVER AT INTERNATIONAL BOUNDARY Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 8 a. m._7

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

Average

Oct.

59

59

60

60

60

59

57

58

57

..

56

56

54

54

53

53

53

52

52

52

51

51

50

50

49

--

Nov.

48

._

48

49

47

48

48

47

47

47

47

47

47

47

--

46

46

45

45

--

43

43

43

43

42

__

Dec.

42

_

_

40

40

40

39

40

38

38

38

38

-

_

38

38

37

37

37

36

36

--

..

35

35

--

-_

Jan.

35

35

35

35

36

36

35

35

35

35

34

36

35

35

_

34

34

34

34

33

--

34

34

33

33

33

32

33

33

34

Feb.

_

33

33

33

33

33

33

34

34

--

34

34

34

34

34

34

34

34

33

"

34

34

34

34

34

34

34

--

34

Mar.

34

35

35

35

35

35

35

35

35

35

._

"

..

..

-.

--

_

36

40

40

41

38

39

40

40

41

__ "

Apr.

40

41

42

41

42

42

42

42

42

43

43

43

43

44

_

44

44

45

45

45

45

46

45

45

46

46

47

47

--

44

May

48

48

48

47

48

48

48

49

50

--

49

50

50

50

50

49

50

50

51

51

52

52

52

52

55

--

June

54

54

54

54

54

54

55

55

55

55

54

54

54

55

57

--

56

56

--

56

--

July

58

64

65

59

..

~

..

--

--

--

Aug.

..

..

..

64

60

60

60

60

60

60

60

60

60

60

60

60

60

65

65

--

Sept.

65

65

55

55

"

..

--

--

--

~

--
SPOKANE RIVER BASIN 

COEUR D'ALENE RIVER AT CATALOG, IDAHO

LOCATION. At wooden bridge, just upstream from bridge on U.S. Highway 10, at Cataldo, Kootenai Coun

4i Bliss downstream from South Fork. 

DRAINAGE AREA.- 1,220 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: October 1952 to September 1957.

Water temperatures: October 1952 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 100 ppm Sept. 1-30; minimum, 33 ppm May 1-21.

Hardness: Maximum, 77 ppm Nov. 10; minimum, 17 ppm May 1-21.

Specific conductance: Maximum daily, 188 micrombos Nov. 10; minimum daily, 42 micromhos May 6.

Water temperatures: Maximum, 68'F July 23, 29, 30, Aug. 1, 18; minimum, freezing point on sever

EXTREMES, 1952-57. Dissolved solids: Maximum, 100 ppm Sept. 1-30, 1957; minimum, 33 Ppm May 1-21

Hardness: Maximum, 77 ppm Nov. 10, 1956; minimum, 17 ppm May 1-21, 1957.

Specific conductance: Maximum daily, 188 micrombos Nov. 10, 1956; minimum daily, 39 micromhos M

Water temperatures: Maximum, 72°F July 13, 1953, June 23, 1955; minimum, freezing point on many 

REMARKS. Records of specific conductance of daily samples available in district office at Portlan

Cataldo for water year October 1956 to September 1957 given in WSP 1516.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-6, 1956...

Nov. 1-9, 11-14..

Jan. 1-31, 1957..

Sept. 1-30 .......

Weighted average

Mean 

discharge 

(cfs)

427 

866 

708 

609 

585

564 

3,284 

832 

1,545 

3,666

7,744 

8,739 

13,120 

9,464 

3,180

1,619 

925 

652 

489 

406

2,851

SUica 

(810.)

Iron 

(Fe)

Calcium 

(Ca)

9.5 

10 

11 

15 

11

12 

7.9 

11 

12 

7.5

6.0 

5.2 

4.8 

5.2 

6.7

8.7 

11 

12 

13 

14

6.8

Magnesium 

(Mg)

4.8 

4.9 

4.8 

9.6 

5.1

4.2 

2.9 

3.2 

4.2 

2.6

2.1 

1.9 

1.2 

1.9 

2.4

3.3 

3.9 

4.5 

5.8 

6.6

2.4

Sodium 

(Na)

2.4 

2.9 

2.6 

2.4 

3.0

2.9 

1.8 

3 3 

3^2 

1.9

1.7 

1.6 

1.2 

1.3 

1.6

2.0 

3.1 

4.0 

3.5 

3. 8

1.8

Potassium 

(K)

Bicarbonate 

<HCOS)

31 

32 

31 

16 

29

29 

24 

26 

27 

22

21 

21

17 

20 

24

26 

30 

30 

32 

31

22

Sulfate 

(S04 )

25 

26 

29

33

32 

18 

28 

33 

17

10 

8.2 

7.8 

9.4 

14

21 

28 

34 

40 

43

14

Chloride 

(Cl)

0.5 

.8 

.8

.5

.8 

.5 

.8 

.8 

.5

.2 

.2 

.2 

.2 

.2

.8 

.5 

.8 

.8 

1.0

0.4

Fluoride 

(F)

Nitrate 

(NO,)

0.4 

.4 

.4

.5

.9 

.7 

.8 

1.0 

.8

.3 

.3 

.4 

.2 

.2

.3 

.6 

.9 

.9 

1.0

0.5

Boron 

(B)

0.02 

.01

.05 

.02 

.02 

.04

.01 

.06

.05 

.12

"
424 PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLUMBIA RIVER BASIN

SPOKANE RIVER BASIN.--Continued 

COEUR D'ALENE RIVER AT CATALOG, IDAHO.--Continued

Temperature (*F) of water, water year October 1956 to September 1957 

/Once-dally measurement at approximately 6 p.mj

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

Average

Oct.

..

59

57

53

52

54

52

50

51

53

53

49

49

_

51

50

47

45

46

45

46

46

46

45

45

45

45

45

45

49

Nov.

43

44

44

45

45

44

45

45

41

42

44

43

44

44

--

45

45

43

36

39

40

39

39

37

38

38

39

38

36

39

42

Dec.

38

37

41

39

32

32

32

32

38

40

38

39

38

39

38

39

40

41

40

38

41

40

38

38

39

37

35

38

40

39

38

38

Jan.

37

36

38

39

38

36

37

37

37

37

37

39

38

35

33

34

_

_

--

..

"

..

"

Feb.

_.

36

34

31

34

37

37

38

38

37

38

34

33

34

35

38

37

35

33

37

37

"

Mar.

39

38

39

32

36

39

39

41

40

39

39

39

40

40

40

41

41

38

39

37

41

40

43

42

43

..

44

44

43

42

41

40

Apr.

44

44

42

43

42

43

44

44

46

46

45

43

45

42

44

46

45

48

44

47

47

47

44

47

43

45

48

52

50

49

45

May

49

45

47

47

47

52

50

50

52

49

50

52

54

50

49

40

46

50

48

51

53

55

55

55

58

50

June

58

60

61

64

64

65

54

55

58

54

55

55

54

55

54

_

60

60

59

55

56

58

60

62

60

56

61

63

63

59

July

62

60

58

62

66

64

64

63

67

63

66

65

65

64

61

59

62

64

65

62

67

68

66

65

65

64

65

68

68

66

64

Aug.

68

62

60

63

64

62

65

64

65

60

62

63

63

64

65

64

66

68

65

64

64

62

65

63

62

62

62

60

63

62

61

63

Sept.

63

62

62

62

61

63

61

59

57

59

61

61

60

62

61

60

..

52

56

56

58

58

56

59

58

59

59

59

59
COLUMBIA RIVER MAIN STEM 

COLUMBIA RIVER AT GRAND COULEE DAM, WAS

LOCATION. At Grand Coulee Dam, It miles north of Grand Coulee, Grant County, 2,500 feet upstream 

Nespelem River.

DRAINAGE AREA. 74,100 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: November 1950 to September 1957.

Water temperatures: November 1950 to September 1957.

EXTREMES, 1956-57. Dissolved solids: Maximum, 102 ppm Mar. 1-31; minimum, 71 ppm Sept. 1-30. 

Specific conductance: Maximum daily, 180 micromhos Apr. 9; minimum daily, 122 micromhos June 1. 

Water temperatures: Maximum, 61'F on many days during October and September; minimum, 34*F Mar. 

EXTREMES, 1950-57. Dissolved aolids: Maximum, 111 ppm Apr. 11-30, 1955; minimum, 71 ppm Sept. 1-

Specific conductance: Maximum daily, 193 micromhos Apr. 24, 25, 1955; minimum daily, 122 microm

Water temperatures: Maximum, 65°F Aug. 19, 1951; minimum, 34°F Feb. 29-Mar. 3, 1956, Mar. 10-14

REMARKS. Records of specific conductance of daily samples available in district office at Portlan

to September 1957 given in WSP 1516.

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-31, 1956 ..

Jan. 1-31, 1957 ..

Weighted average

Mean 

discharge 

(cfs)

64,200 

61,400 

54,430 

73,280

49,230 

69,460

m rjfifi

353,100

143,700 

92,690 

60,160

108,300

Silica 

(810.)

5.4

6.4

7.5

7.7

Iron 

(Fe)

0.01

.02

.05

.01

Calcium 

(Ca)

19

22

23

19

Magnesium 

(Mg)

4.3

4.9

5.7

3.8

Sodium 

(Na)

1.5

1.9

2.6

1.4

Potassium 

(K)

0.9

1.1

1.3

1.0

Bicarbonate 

(HCO,)

71

79

83

67

Sulfate 

(SO,)

10

12

16

10

Chloride 

(Cl)

0.5

.5

1.0

.5

Fluoride 

(F)

0.1

.2

..2

.1

Nitrate 

(NO,)

0.6

.5

1.1

.8

Boron 

(B)

0.02

.05

.01

.04
PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLUMBIA RIVER BASIN

COLUMBIA RIVER MAIN STEM--Continued 

COLUMBIA RIVER AT GRAND COULEE DAM, WASH. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 10 a. mj

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

Average

Oct.

61

61

62

62

62

62

61

61

61

61

61

61

61

61

61

60

60

60

60

60

60

60

60

60

60

60

60

59

59

59

58

60

Nov.

58

58

59

59

59

59

58

58

58

58

58

58

57

56

56

55

56

54

53

53

52

52

52

52

52

52

52

51

51

51

55

Dec.

51

50

50

50

50

50

50

50

50

49

49

48

48

48

47

47

47

47

47

47

47

46

46

46

46

46

46

46

45

44

43

48

Jan.

43

43

44

44

44

43

43

44

44

44

43

42

42

42

41

41

41

41

41

40

40

40

40

40

39

39

38

37

37

38

38

41

Feb.

38

38

38

38

38

37

36

36

36

36

36

36

36

36

38

38

38

38

37

37

37

36

36

36

36

36

36

36

..

37

Mar.

36

36

36

35

35

35

35

35

35

34

34

34

34

34

35

35

35

35

35

35

35

35

36

37

37

37

37

37

37

36

36

35

Apr.

36

36

36

36

36

36

37

37

37

37

37

38

38

38

38

38

38

38

38

39

39

40

40

40

40

39

39

39

39

40

--

38

May

40

40

41

41

42

42

43

45

44

45

46

46

46

46

47

47

47

48

48

48

48

48

48

48

48

48

48

48

48

48

48

46

June

48

48

48

48

49

50

50

50

50

50

50

50

50

51

52

52

52

52

53

53

53

53

53

53

53

53

53

53

53

53

--

51

July

54

54

54

54

54

54

54

54

46

47

48

51

54

55

58

58

58

58

58

58

59

59

59

59

59

60

60

60

59

59

58

56

Aug.

57

57

58

58

58

57

57

57

57

57

58

58

59

58

59

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

59

Sept.

60

60

60

60

60

61

61

61

61

61

61

61

61

61

60

60

60

60

60

60

60

60

60

60

61

61

61

61

61

61

60
YAKIMA RIVER BASIN 

YAKIMA RIVER AT KIONA, WASH.

LOCATION. At highway bridge just downstream from gaging station at Klona, Benton County, 3i mil

upstream from mouth.

DRAINAGE AREA. 5,600 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: December 1952 to September 1957.

Water temperatures: December 1952 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 220 ppm Aug. 1-31, Sept. 16-30; minimum 76 ppm M

Hardness: Maximum, 134 ppm Sept. 16-30; minimum, 42 ppm May 1-23.

Specific conductance: Maximum daily, 381 mlcromhos Aug. 20; minimum daily, 101 mlcromhos May 9

Water temperatures: Maximum, 79 °F July 24; minimum, freezing point on several days during Janu

EXTREMES, 1952-57. Dissolved solids: Maximum, 236 ppm Sept. 11-20, 1953; minimum, 76 ppm May 1-

Hardness: Maximum, 145 ppm Sept. 11-30, 1953; minimum, 42 ppm May 1-23, 1957.

Specific conductance: Maximum daily, 387 micromhos Sept. 29, 1955; minimum daily, 101 mlcromho

Water temperatures: Maximum, 79°F July 24, 1957; minimum, freezing point on several days durin

REMARKS. Records of specific conductance of daily samples available In district office at Portlan

Chemical analyses, in parts per million, water year October 1956 

Date of collection

Oct. 1-13, 1956 ..

Nov. 1-15 .......

Nov. 16-30 ......

Dec. 12-31 ......

Jan. 1-11, 1957 .. 

Feb. 5-28 .......

Apr. 16-30 ......

Mean 

discharge 

(cts)

2,405 

3,125 

2,877 

3,053 

3 003

7,674

4,964 

2,607 

3,856 

5,741 

5,583 

13,070 

5,766

Silica 

(SiOa)

31

17 

23

Iron 

(Fe)

0.02

.00 

.07

Calcium 

(Ca)

33

14 

17

Magnesium 

(Mg)

11

4.5 

5.3

Sodium 

(Na)

21 

19 

18 

15 

16 

7.8

10 

15 

13 

9.1 

8.9 

5.6 

9.0

Potassium 

(K)

3.7

2.0 

1.8

Bicarbonate 

(HCO,)

170 

150 

146 

126 

134 

66

71 

121 

107 

88 

84 

57 

82

Sulfate 

(S04 )

23

8.1 

8.0

Chloride 

(Cl)

7.2 

6.5 

6.5 

5.8 

5.8 

3.2

5.5 

5.8 

4.8 

3.0 

2. 8 

1.5 

2.8

Fluoride 

(F)

0.3

.2 

.3

Nitrate 

(NO,)

3.5

2.1 

1.2

Boron 

(B)

0.05

.01 

.01
YAKIMA RIVER BASIN Continued

YAKIMA RIVER AT KIONA, WASH. Continued

Chemical analyses, in parts per million, water year October 1956 to Sep

Date of collection

June 1-13,1957 ..

a 

Weighted average

b Weighted average

Mean 

discharge 

(cfs)

5,100 

2,320 

1,311 

1,418 

1,590 

1,834 

1,937

3,988

3,864

Silica 

(SiO,)

23

--

--

Iron 

(Fe)

0.00

--

--

Calcium 

(Ca)

32

--

-

Magnesium 

(Mg)

11

--

--

Sodium 

(Na)

9.4 

15 

20 

20 

21 

21 

22

12

12

Potassium 

(K)

3.6

--

--

Bicarbonate 

(HCO,)

83 

126 

166 

168 

177 

169 

173

100

100

Sulfate 

(SO,)

24

--

-

Chloride 

(Cl)

3.0 

5.5 

7.0 

7.0 

7.0

4.0

4.0

Fluoride 

(F)

0.2

--

-

Nitrate 

(NO,)

2.7

--

-

Boron 

(B)

0.04

--

-

a Represents 96 percent of runoff for water year October 1956 to September 1957.

b Includes estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 195
YAKIMA RIVER BASIN

YAKIMA RIVER BASIN Continued 

YAKIMA RIVER AT KIONA, WASH.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 4:30 p. m.7

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

29

30

31

Average

Oct.

59

58

57

56

67

56

57

58

57

58

56

56

56

54

54

55

54

54

53

52

52

52

50

47

48

48

49

50

49

49

47

54

Nov.

48

48

48

48

48

49

48

50

49

50

50

50

48

47

45

44

45

42

41

40

38

38

38

38

39

39

38

38

38

39

44

Dec.

38

38

41

39

36

34

33

34

40

42

43

42

41

42

43

43

44

43

42

46

40

39

37

37

36

37

37

36

37

38

37

39

Jan.

37

38

38

37

37

38

38

36

37

36

37

38

38

36

35

33

32

32

32

32

32

32

32

32

32

32

--

35

Feb.

._

35

34

33

34

37

40

40

38

39

40

39

38

38

32

38

36

36

41

--

48

45

42

--

Mar.

44

44

45

43

43

46

41

41

44

44

44

45

46

45

45

46

43

47

49

49

48

47

48

49

-

51

51

49

51

52

52

46

Apr.

54

53

53

51

51

53

53

53

54

56

55

54

53

51

54

54

51

54

56

53

56

56

55

55

55

52

59

61

65

65

55

May

62

58

58

57

57

59

60

60

58

56

57

57

59

57

57

60

61

59

55

56

57

59

61

63

65

66

67

67

69

70

60

June

71

71

71

71

70

69

69

68

68

68

65

66

65

65

65

68

70

73

72

71

68

_

74

72

73

71

69

75

75

74

70

July

73

72

72

74

76

74

73

75

76

77

75

77

_

74

72

70

72

73

75

72

76

78

77

79

76

75

75

75

76

75

73

75

Aug.

72

74

71

71

72

69

70

72

73

71

72

72

73

74

74

74

75

76

74

74

74

74

74

70

70

69

69

69

68

68

72

Sept.

69

69

68

70

71

70

68

69

69

69

69

69

70

70

69

68

62

61

64

63

64

65

66

65

64

62

61

63

63

67
PART 13. SNAKE RIVER BASIN

SNAKE RIVER MAIN STEM 

SNAKE RIVER NEAR HEISE, IDAHO

LOCATION. At Eagle Rock Canal headgate, 1$ miles upstream from Heise, Bonneville County, 1 5/8 miles 

stream from gaging station, about 4} miles east of Ririe and about 21 miles upstream from Henrys F

DRAINAGE AREA. 5,752 square miles (above gaging station). 

RECORDS AVAILABLE. Chemical analyses: January 1953 to September 1957.

Water temperatures: January 1953 to September 1957.

EXTREMES, 1956-57. Dissolved solids: Maximum, 378 ppm Nov. 11-20; minimum, 173 ppm July 21-31. 

Hardness: Maximum, 274 ppm Nov. 11-20; minimum, 135 ppm July 21-31.

Specific conductance: Maximum daily, 791 micromhos Nov. 13; minimum daily, 285 micromhos July 26.

Water temperatures: Maximum, 60°F on several days during August; minimum, freezing point on many 

EXTREMES, January 1953-57.--Dissolved solids: Maximum, 378 ppm Nov. 11-20, 1956; minimum, 161 ppm Ju

Hardness: Maximum, 276 ppm Feb. 1-10, 11-19, 20-28, 1955; minimum, 117 ppm July 21-31, Aug. 1-10, 

Specific conductance: Maximum daily, 791 micromhos Nov. 13, 1956; minimum daily, 240 micromhos Jun

Water temperatures: Maximum, 67 °F July 19, 1955; minimum, freezing point on many days during wint

REMARKS. Records of specific conductance of daily samples available in district office at Salt Lake 

1956 to September 1957 given in WSP 1517. About 2.5 percent of normal annual streamflow of 5,000,

pling point and gaging station. This diversion occurs during May to November except for leakage t

inflow between sampling point and gaging station except during periods of local rains.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 1-10, 1956 ..... 

Oct. 11-20..........

Oct. 21-31....... ...

Nov. 11-20 .........

Nov. 21-30 .........

Dec. 1-10 ..........

Dec. 11-20.... ......

Jan. 1-10, 1957 .....

Jan. 21-31..........

Feb. 1-10 ..........

Feb. 21-28. .........

Mar. 11-20 .........

Mar. 21-31 .........

Apr. 11-20. .........

Mean 

discharge 

(cfs)

3,590 

3,476 

3,461 

1,334 

1,731

2,007 

2,328 

2,149 

2,062 

2,029

1,913 

2,019 

2,028 

2,059 

2,134

2,110 

3,963 

4,981 

4,070 

5,410

Silica 

(S10.)

11 

11 

11 

11 

11

12 

14 

13 

14 

13

13 

15 

13 

13 

13

12 

12 

13 

12 

12

Iron 

(Fe)

Calcium 

(Ca)

67 

66 

66 

73 

76

60 

49 

49 

51 

51

55 

55 

58 

59 

59

63 

61 

58 

56 

57

Magnesium 

(Mg)

16 

17 

17 

20 

20

15 

11 

12 

12 

12

12 

12 

12 

14 

14

15 

13 

12 

15 

14

Sodium 

(Na)

14 

14 

14 

25 

23

18 

16 

16 

16 

17

17 

18 

16 

16 

16

16 

16 

14 

14 

13

Potassium 

(K)

2.5 

2.5 

2. 5 

2.9 

2.9

2.9 

2.6 

2.6 

2.6 

2.4

2.4 

2.4 

2.4 

2.4 

2.4

2.4 

2.4 

2.2 

2.2 

2.2

Bicarbonate 

(HCO,)

204 

198 

202 

220 

234

188 

160 

159 

166 

166

170 

176 

172 

182 

180

196 

182 

176 

179 

179

Carbonate 

(CO,)

Sulfate 

(S04 )

74 

74 

74 

92 

88

64 

48 

48 

50 

52

53 

55 

58 

61 

61

67 

63 

59 

60 

57

Chloride 

(Cl)

18 

18 

19 

36 

34

22 

20 

20 

22 

19

21 

19 

19 

19 

19

19 

18 

14 

15 

15

Fluoride 

(F)

Nitrate 

(NO,)

1.0 

1.0 

1.1 

.9 

1.2

1.0 

.7 

.7 

.2 

.7

1.5 

.6 

1.1 

.8 

.8

.6 

.5 

.8 

.7 

.7

Bo

ro

(B

0.0

.0

.0

.0

.0

.0

.0
Apr. 21-30. .........

May 11-20 ..........

May 21-31 ..........

July 11-20 ..........

July 21-31 ..........

Sept. 11-20 .........

Sept. 21-30 .........

Weighted average. . .

6,996

15, 060

14,650

12,480

12, 920

11,380

13,540

13,170

9,769

8,372

7,555

8,034

6,154

6,424

12

9.8

9.0

9.1

9.7

9.6

10

10

57

50

48

44

41

40

42

44

47

49

11

10

8.6

10

11

11

9.8

7.6

9 7

11

10

1.8

1.4

1.9

1.8

1.8

1.7

1.9

1 c*9

1 c*9

160

162

46

41

1 *3

6.6

8.0

8.8

10

.9

.8

.8

.5

0.9
432 SNAKE RIVER BASIN

SNAKE RIVER MAIN STEM Continued 

SNAKE RIVER NEAR HEISE, IDAHO--Continued 

Temperature (°F) of water, 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

IB

19

20

21

22

23

24

25

26

27

28

29

30

31

Average

Oct.

49

49

49

50

50

51

50

52

52

52

51

50

48

48

46

45

46

46

46

44

45

45

44

41

39

40

40

41

37

39

38

46

Nov.

38

34

35

34

38

41

40

41

42

43

45

43

41

39

33

35

37

35

32

32

33

34

34

34

33

32

32

33

33

33

--

36

Dec.

34

33

33

34

34

33

32

33

33

34

..

33

37

35

35

35

34

32

34

32

32

32

32

33

33

32

32

32

34

33

33

33

Jan.

32

33

32

32

33

32

32

32

32

32

33

34

34

33

35

32

32

32

33

32

32

32

32

33

32

32

32

32

32

32

32

Feb.

33

33

32

33

34

33

32

35

34

33

35

34

34

36

36

34

34

32

32

33

35

36

34

37

38

37

37

35

_

_

--

34

Mar.

32

33

34

34

35

34

35

37

38

35

35

35

32

32

33

36

34

34

35

36

34

33

35

33

33

34

35

38

38

37

39

35

Apr.

37

36

37

37

37

37

37

37

40

38

40

38

39

39

39

38

39

_

38

39

41

41

42

40

40

39

39

40

41

42

--

39

May

42

46

44

46

44

46

49

45

46

45

47

46

46

45

45

44

46

44

46

45

44

47

45

46

46

48

48

49

50

49

50

46

June

51

52

53

54

55

56

54

54

52

53

53

53

53

52

51

50

52

54

53

54

53

52

54

54

53

54

55

55

55

56

--

53

July

55

55

54

53

54

..

54

54

55

55

57

56

56

57

57

56

56

55

56

56

57

56

57

57

58

57

56

57

57

57

58

56

Aug.

58

57

57

58

60

60

58

58

59

60

59

60

59

58

60

59

60

59

59

59

59

60

59

60

60

60

59

58

59

60

58

59

Sept.

58

57

58

58

57

59

58

59

56

56

56

56

57

55

56

56

57

57

55

54

55

54

54

54

55

55

56

56

57

56

--

56
HENRYS FORK BASIN 

HENRYS FORK NEAR REXBURG, IDAHO

LOCATION. Temperature recorder at gaging station, 200 feet downstream from highway bridge, and 

DRAINAGE AREA. 2,920 square miles.

RECORDS AVAILABLE. Water temperatures: July 1953 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 71°F Aug. 5, 6, 9, 10; minimum, freezing point 

EXTREMES, 1953-57. Water temperatures: Maximum, 77°F July 17-19, 1955; minimum, freezing point 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1517.

Temperature (°F) of water, water year October 1956 to Septe

Day

1...................

2...................

3...................

4...................

5. ..................

6. ..................

7. ..................

8...................

9. ..................

10. ..................

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

12...................

13...................

14...................

15...................

16...................

17...................

18...................

19. ..................

20. ..................

21...................

22...................

25...................

26...................

27...................

28...................

29...................

30. ..................

31...................

October

max

54 

54 

55 

55 

56

56 

56 

57 

57 

56

55 

53 

50 

48 

49

49 

49 

49 

49 

48

47 

46 

46 

45 

41

40 

40 

40 

39 

39 

38

49

mln

53 

53 

53 

54 

54

55 

54 

55 

55 

55

53 

50 

48 

47 

47

48 

48 

48 

48 

46

46 

46 

45 

41 

39 

39 

40 

39 

39 

38 

38

48

November

max

38 

37 

35 

35 

36 

37 

38 

38 

38 

38

39 

39 

39 

37 

36

35 

34 

34 

34 

34

34 

34 

33 

33 

33

33 

33 

33 

33 

33

35

min

37 

35 

35 

35 

35

36 

37 

38 

38 

38

38 

39 

37 

36 

35

34 

34 

34 

34 

34

34 

33 

33 

33 

33

33 

33 

33 

33 

33

35

December

max

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33 

33

33

min

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33 

33

33

January

max

33 

33 

33 

33 

33 

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33 

33

33

mln

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33 

33

33

February

max

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

34 

34 

34 

34 

35 

35

33

min

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

32

32 

33 

33 

33 

33

33 

33 

33 

34 

34 

34 

34 

35

33

March

max

35 

36 

36 

36 

37

37 

37 

38 

39 

39

39 

38 

38 

38 

38

39 

40 

40 

41 

43

43 

41 

40 

41 

41

42 

43 

44 

44 

44 

44

40

min

35 

35 

36 

36 

36

37 

37 

37 

38 

39

38 

38 

38 

38 

38

38 

39 

40 

40 

41

41 

40 

40 

40 

40 

40 

42 

43 

44 

44 

44

39

April

max

44 

44 

46 

46 

45

45 

44 

45 

48 

48

48 

48 

48 

48 

48

48 

49 

49 

48 

48

48 

48 

48 

48 

48 

47 

46 

49 

52 

52

47

min

44 

43 

44 

45 

45 

44 

43 

43 

45 

48

48 

48 

46 

48 

47

47 

48 

48 

47 

47

47 

48 

48 

48 

47

45 

45 

46 

49 

52

46
SNAKE RIVER MAIN STEM

SNAKE RIVER AT KING HILL, IDAHO

LOCATION. At county highway bridge about 400 yards downstream from gaging station, at King Hill, E

DRAINAGE AREA. 35,800 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: March 1951 to September 1957.

Water temperatures: March 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 348 ppm Oct. 1-15; minimum, 280 ppm May 1-31.

Hardness: Maximum, 210 ppm Sept. 1-30; minimum, 184 June 1-30.

Specific conductance: Maximum daily, 571 micromhos Oct. 10; minimum daily, 423 micromhos June 6.

Water temperatures: Maximum, 69°F on several days during June and July; minimum, 41°F Jan. 30. 

EXTREMES, 1951-57. Dissolved solids: Maximum, 359 ppm Sept. 1-10, 1952; minimum, 252 ppm May 1-10

Hardness: Maximum, 220 ppm Nov. 1-10, 21-30, 1953; minimum, 166 ppm May 1-10, 1952.

Specific conductance: Maximum daily, 594 micromhos Oct. 3, 1952; minimum daily, 394 micromhos Ma

Water temperatures: Maximum, 73°F Aug. 2, 1955; minimum, 40'F Feb. 2, 1956.

REMARKS. Records of specific conductance of daily samples available in district office at Portland

to September 1957 given in WSP 1517.

Chemical analyses, in parts per million, water year October 1956 to 

Date of collection

Oct. 1-15, 1956 ..

Nov. 1-30 .......

Jan. 1-31 ,1957 

Apr. 1-30 .......

Aug. 1-31 .......

Sept. 1-30 .......

Weighted average

Mean 

discharge 

(cfs)

10,720 

11,080 

10,630 

10, 570 

10,840 

10,900 

12,420

13,910 

18,210 

9,845 

7,737 

8,417 

9,214

11,140

Silica 

(SiOa)

Iron 

(Fe)

Calcium 

(Ca)

48 

48 

49 

49 

49 

47 

48

48 

48 

44 

46 

48 

48

48

Magnesium 

(Mg)

21 

20 

20 

19 

20 

18 

18

18 

16 

18 

19 

19 

22

19

Sodium 

(Na)

36 

35 

34 

34 

33 

31 

29

27 

26 

28 

33 

33 

37

31

Potassium 

(K)

Bicarbonate 

(HCO,)

226 

224 

224 

220 

216 

206 

209

203 

199 

201 

212 

218 

226

212

Sulfate 

(SO,)

62 

57 

57 

56 

56 

52 

52

51 

50 

54 

56 

58 

58

54

Chloride 

(Cl)

26 

25 

25 

25 

26 

24 

24

23 

21 

21 

24 

24 

26

24

Fluoride 

(F)

Nitrate 

(NO,)

4.4 

4.2 

3.3 

3 3 

3.4 

3.4 

3.1

2.4 

2.3 

1.8 

4.1 

4.2 

3.5

3.2

Boron 

(B)

0.04 

.02 

.04 

.02 

.06 

.12

.10 

.05 

.10 

.06 

.09 

.04

"
SNAKE RIVER MAIN STEM

SNAKE RIVER MAIN STEM Continued

SNAKE RIVER AT KING HILL, IDAHO Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once -dally measurement at approximately 12 mj

435

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

Average

Oct.

60

60

61

62

60

62

62

60

61

59

58

67

58

58

57

58

58

57

57

57

55

54

52

55

56

53

54

52

53

51

58

Nov.

51

51

51

50

52

53

52

53

53

54

54

54

52

50

49

50

51

50

49

49

48

48

48

47

47

48

48

47

45

45

--

50

Dec.

46

47

48

47

49

47

45

45

45

45

47

48

50

50

48

50

50

50

48

48

47

45

47

47

47

48

45

45

47

46

47

47

Jan.

47

47

47

44

44

44

43

44

44

44

44

47

47

48

48

46

45

44

45

45

45

44

44

45

45

44

44

43

42

41

44

45

Feb.

44

45

44

44

45

44

45

46

47

47

49

49

47

50

50

49

49

48

47

48

49

49

50

50

49

50

50

51

--

48

Mar.

52

51

51

51

50

51

53

54

53

51

50

49

49

49

52

51

52

52

53

53

52

50

50

51

53

53

52

53

52

52

51

51

Apr.

' 50

53 .

51

51

52

52

51

53

55

56

56

57

57

57

47

57

57

55

55

55

56

57

54

54

54

54

57

57

59

59

--

55

May

60

61

58

61

60

62

65

62

63

62

61

61

61

59

59

60

61

60

59

58

58

57

57

59

60

61

62

64

64

65

67

61

June

68

68

58

69

69

68

67

67

65

64

64

65

64

62

61

63

63

65

66

65

64

63

65

66

65

65

65

65

66

67

65

July

67

67

67

66

67

68

68

68

68

68

68

69

68

69

66

66

66

66

67

67

67

68

68

68

68

69

68

68

69

69

69

68

Aug.

68

66

67

66

68

67

67

68

68

68

67

67

67

67

67

68

68

67

65

66

67

67

67

67

66

66

66

65

65

64

63

67

Sept.

64

64

64

65

66

66

65

64

63

63

63

64

64

64

64

63

63

61

59

60

60

62

62

62

62

64

64

62

63

63

--

63
BOISE RIVER BASIN 

BOISE RIVER NEAR TWIN SPRINGS, IDAHO

LOCATION. Temperature recorder at gaging station, on right bank a quarter of a mile upstream from 

Arrowrock Reservoir, 4 miles downstream from 'Twin Springs, Boise County, and 13 miles upstrea

DRAINAGE AREA. 830 square miles, approximately.

RECORDS AVAILABLE. Water temperatures: March 1955 to January 1957 (discontinued). 

EXTREMES, March to September 1955.--Water temperatures: Maximum, 72°F July 23, 24, Aug. 8, 11.

EXTREMES, 1955-56. Water temperatures: Maximum, 68°F July 22, 27, 29; minimum, freezing point o

EXTREMES, October 1956 to January 1957. Water temperatures: Minimum, freezing point on several 

EXTREMES, March 1955 to January 1957.--Water temperatures: Maximum, 72°F July 23, 24, Aug. 8, 11

winter months. 

REMARKS. Records of discharge for water years October 1954 to September 1955, October 1955 to Se

in WSP 1397, WSP 1447, and WSP 1517 respectively.

Temperature (°F) of water, March to September 1955

Day

2. ..................

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. ..................

Average .......

October

max rain

November

max min

December

max min

January

max min

February

max min

March

max

42 

42 

41 

39 

40 

44

--

min

35 

35 

37 

37 

36 

37

--

April

max

42 

40 

41 

44 

46

46 

45 

44 

44 

44

40 

40 

42 

44 

45

43 

44 

44 

44 

46

47 

47 

44 

46 

45

45 

43 

45 

50 

50

44

min

38 

38 

35 

37 

38

38 

38 

38 

38 

38

36 

38 

40 

41 

38

41 

41 

40 

39 

41

45 

43 

41 

43 

43

43 

39 

41 

44 

46

40
BOISE RIVER BASIN Continued

BOISE RIVER NEAR TWIN SPRINGS, IDAHO--Continued 

Temperature (°F) of water, water year October 1955 to September 19

Day

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. ..................

October

max

50 

51 

53 

52 

50

48 

48 

49 

53 

53

50 

53 

52 

52 

53 

53 

52 

52 

54 

54

53 

51 

48 

45 

44

44 

43 

44 

43 

43 

42

49

min

45 

45 

46 

49 

48

43 

43 

46 

49 

50

47 

48 

48 

48 

49

49 

49 

49 

52 

52

50 

48 

44 

42 

41

42 

40 

43 

41 

42 

40

46

November

max

40 

37 

38 

39 

41

41 

39 

38 

40 

43

42 

37 

33 

33 

34

34 

34 

33 

33 

33

35 

35 

35 

35 

34

35 

37 

37 

36 

37

37

min

38 

35 

36 

38 

39

38 

38 

37 

38 

40

37 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

35 

33 

33 

34

34 

35 

36 

36 

37

35

December

max

37 

36 

35 

33 

33

33 

33 

33 

33 

33

34 

35 

35 

33 

33

33 

32 

32 

33 

34

35 

35 

37 

37 

37

37 

37 

36 

34 

33 

34

34

min

36 

35 

33 

33 

33

33 

33 

33 

33 

33

33 

34 

33 

33 

33 

32 

32 

32 

32 

33

34 

34 

35 

37 

37

37 

36 

34 

33 

33 

33

34

January

max

34 

34 

34 

35 

36

36 

35 

34 

34 

34

36 

36 

36 

36 

34 

36 

36 

36 

35 

36

37 

37 

36 

36 

33

32 

32 

32 

32 

32 

33

35

min

33 

33 

33 

34 

35

35 

34 

34 

32 

33

34 

35 

35 

32 

32 

34 

36 

35 

34 

34

36 

36 

36 

33 

32

32 

32 

32 

32 

32 

32

34

February

max

33 

33 

33 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32 

32 

32 

32 

33

36 

37 

37 

35 

36

37 

37 

35 

36

33

min

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

33

32 

35 

35 

34 

33

35 

33 

33 

34

33

March

max

36 

38 

37 

37 

36

35 

33 

36 

37 

36

34 

34 

35 

36 

36 

39 

40 

40 

40 

40

39 

41 

42 

41 

41

40 

38 

39 

41 

40 

40

38

min

35 

35 

35 

33 

33

32 

32 

32 

34 

33

32 

32 

33 

32 

32

32 

34 

34 

36 

35

36 

37 

36 

36 

36

38 

35 

35 

36 

38 

39

34

April

max

39 

39 

40 

41 

41

39 

39 

41 

42 

42

41 

41 

41 

42 

42 

41 

42 

42 

41 

41

41 

41 

41 

40 

40

40 

42 

41 

40 

40

41

min

37 

35 

35 

36 

38

35 

37 

35 

37 

37

38 

37 

36 

37 

37

38 

37 

37 

37 

36

36 

37 

36 

36 

38

38 

38 

38 

36 

36

37
BOISE RIVER BASIN--Continued

BOISE RIVER NEAR TWIN SPRINGS, IDAHO--Continu

Temperature (°F) of water, October 1956 to January 195

Day

2. ..................

4. ..................

5. ..................

6...................

7. ..................

8. ..................

9. ..................

10. ..................

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

12...................

13. ..................

14...................

16. ..................

17. ..................

18. ..................

19...................

20. ..................

21...................

22. ..................

23...................

27...................

28...................

29. ..................

30. ..................

31...................

Average .......

October

max

54 

54 

56 

55 

58

56 

56 

56 

56 

56

54 

51 

52 

51 

49

50 

50 

49 

49 

48

47 

46 

45 

44 

43

42 

42 

42 

41 

40 

40

49

mln

50 

49 

50 

52 

53

52 

52 

53 

52 

54

51 

50 

50 

48 

46

46 

47 

47 

46 

45

45 

44 

44 

43 

41

41 

42 

40 

38 

40 

40

47

November

max

40 

40 

39 

39 

40

43 

43 

40 

39 

39

40 

40 

38 

38 

36

36 

38 

37 

36 

35

35 

35 

35 

35 

35

35 

35 

35 

35 

35

38

mln

39 

38 

38 

38 

38

40 

40 

38 

38 

38

39 

38 

38 

36 

35

35 

36 

36 

35 

35

35 

35 

35 

35 

35

35 

35 

35 

35 

35

37

December

max

35 

35 

35 

35 

35

35 

35 

35 

35 

35

35 

36 

37 

36 

36

36 

36 

36 

36 

34

34 

33 

33 

33 

33

33 

33 

33 

33 

33 

33

35

mln

35 

35 

35 

35 

35

35 

35 

35 

35 

35

35 

35 

36 

35 

34

34 

34 

34 

34 

34

34 

33 

33 

33 

33

33 

33 

33 

33 

33 

33

34

January

max

33 

33 

33 

33 

33

32 

32 

32 

32 

32

32 

32 

32 

32

-

-.

--

min

33 

33 

33 

33 

33

32 

32 

32 

32 

32

32 

32 

32 

32

--

February

max min

March

max min

April

max minm
BOISE RIVER BASIN Continued

BOISE RIVER AT NOTUS, IDAHO

LOCATION. At steel highway bridge 1,100 feet downstream from gaging station, a quarter of a mil

northwest of Caldwell.

DRAINAGE AREA. 3,820 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: January 1939 to January 1940, November 1950 to September 

Water temperatures: November 1950 to September 1957.

Sediment records: January 1939 to June 1940. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 509 ppm Jan. 1-31; minimum, 86 ppm May 1-31.

Hardness: Maximum, 242 ppm Jan. 1-31; minimum, 39 ppm May 1-31.

Specific conductance: Maximum daily, 825 micromhos Jan. 27; minimum daily, 103 micromhos May 

Water temperatures: Maximum, 80°F June 29, Aug. 4, 16; minimum, 35°F Jan. 29-30. 

EXTREMES, 1939-40, 1950-57. Dissolved solids: Maximum, 914 ppm Aug. 21-31, 1939; minimum, 77 pp

Hardness: Maximum, 284 ppm July 21-31, 1939; minimum, 35 ppm June 11-26, 1953.

Specific conductance: Maximum daily, 1,470 micromhos July 30, Aug. 26, 1939; minimum daily, 8

Water temperatures: Maximum, 85°F on several days during summer months, 1951, 1952 and 1954; 

Sediment loads, 1939-40: Maximum, 8,600 tons Apr. 2, 1939; minimum, 0.3 ton Aug. 3, 1939.

REMARKS. Records of specific conductance of daily samples available in district office at Portla

to September 1957 given in WSP 1517.

Chemical analyses, in parts per million, water year October 1

Date of collection

Oct. 1-16, 1956 ..

Nov. 1-30........

Jan. 1-31, 1957 .. 

Feb. 1-23 .......

Apr. 1-6 ........

Apr. 12-30 ......

Aug. 1-31........

Sept. 1-30 .......

Weighted average

Mean 

discharge 

(cfs)

755 

995 

761 

618 

523 

600 

2,212 

5,857 

1,148 

4,989

4,975 

1,573 

6,656 

5,740 

4,902 

2,072 

621 

190 

343 

301 

483

1,948

Silica 

(Si02)

Iron 

(Fe)

Calcium 

(Ca)

40 

51 

55 

58 

69 

68 

35 

17 

40 

16

16 

36 

13 

13 

13 

19 

30 

41 - 

36 

40 

41

22

Magnesium 

(Mg)

11 

15 

16 

16 

17 

13 

5.2 

3.4 

10 

3.5

3.3 

10 

2.4 

1.7 

2.7 

3.8 

7.2 

11 

9.3 

12 

12

4.9

Sodium 

(Na)

60 

74 

77 

75 

77 

67 

35 

13 

50 

13

13 

47 

9.3 

9.6 

11 

20 

40 

68 

52 

62 

62

23

Potassium 

(K)

Bicarbonate 

(HC03 )

228 

276 

293 

297 

336 

310 

148 

77 

194 

75

74 

181 

60 

58 

62 

94 

158 

224 

198 

231 

229

109

Sulfate 

(S04 )

71 

93 

97 

98 

100 

88 

45 

15 

66 

18

18 

65 

9.2 

9.1 

11 

21 

48 

86 

61 

71 

70

28

Chloride 

(Cl)

15 

20 

20 

21 

22 

20 

11 

3.5 

15 

3.2

3.5 

14 

2.0 

2.5 

3.8 

6.0 

12 

21 

15 

18 

16

6.3

Fluoride 

(F)

Nitrate 

(N03 )

3.6 

5.8 

6.4 

6.2 

3.3 

4.4 

5.9 

2.5 

5.7 

1.9

1.9 

4.2 

1.4 

.6 

.4 

1.7 

1.9 

2.6 

3.9 

3.4 

3.0

2.1

Boron 

(B)

0.06 

.05 

.05 

.09 

.02

.04

.04 

.06

.10 

.11 

.08 

.05

-
440 SNAKE RIVER BASIN

BOISE RIVER BASIN Continued

BOISE RIVER AT NOTUS, IDAHO Continued

Temperature (°f) of water, water year October 1956 to September 1957 

/Once -dally measurement at approximately 1 p. mj

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

Average

Oct.

63

64

66

64

64

63

63

65

66

63

57

57

57

56

56

59

60

56

56

55

55

55

54

51

51

53

55

50

50

52

50

58

Nov.

47

51

49

50

54

50

50

54

54

54

55

54

50

42

46

49

50

48

45

46

47

46

46

48

48

46

44

44

44

44

--

48

Dec.

43

44

44

44

45

44

44

43

43

45

50

49

51

50

50

50

48

48

47

46

45

43

46

47

45

45

42

42

43

42

42

45

Jan.

45

46

43

42

41

39

42

42

40

42

43

42

43

46

44

42

41

40

39

40

40

40

38

42

41

40

38

38

35

35

39

41

Feb.

42

42

43

43

43

42

40

44

45

45

45

44

41

50

48

48

43

44

44

41

43

44

50

43

43

46

48

48

--

44

Mar.

46

42

42

45

45

43

45

45

44

44

45

43

42

42

45

43

43

50

53

53

49

49

52

50

47

45

47

46

48

50

48

46

Apr.

44

47

47

48

48

47

55

55

60

59

60

50

50

52

49

49

51

52

50

49

50

50

52

48

50

_

50

55

57

56

--

51

May

54

50

50

52

54

55

56

53

55

52

55

55

58

54

57

60

58

58

55

55

55

57

60

61

61

61

61

61

63

61

61

57

June

65

68

66

66

67

65

64

60

65

65

66

64

60

60

60

64

68

69

67

67

67

70

70

70

75

75

77

77

80

78

68

July

76

75

75

75

75

75

76

75

76

75

75

76

76

76

76

76

74

75

75

74

73

74

75

75

75

74

75

76

75

76

75

75

Aug.

75

76

76

80

77

75

75

75

75

77

76

76

78

78

78

80

78

75

75

79

78

75

77

77

74

73

70

71

68

70

71

75

Sept.

70

70

70

72

74

73

75

70

70

78

77

67

68

68

79

79

69

65

61

63

64

69

69

69

68

67

68

68

69

69

70
SNAKE RIVER MAIN STEM

SNAKE RIVER AT OXBOW, OREG.

LOCATION. Temperature recorder at gaging station at Oxbow, Baker County, five-eighths of a mil

Oxbow powerplant and 2i miles upstream from Indian Creek. 

DRAINAGE AREA. 72,800 square miles, approximately. 

RECORDS AVAILABLE. Water temperatures: May 1956 to September 1957. 

EXTREMES, May to September 1956.--Water temperatures: Maximum, 81°F July 25.

EXTREMES, 1956-57. Water temperatures: Maximum, 75°F on several days during July; minimum, fr

EXTREMES, May 1956 to September 1957. Water temperatures: Maximum, 81°F July 25, 1956; minimum

REMARKS. Records of discharge for water years October 1955 to September 1956, October 1956 to 

respectively.

Temperature (°F) of water, May to September 1956

Day ^

4...................

5. ..................

6. ..................

7. ..................

9. ..................

10...................

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

12...................

13...................

14...................

15...................

16...................

17. ..................

18...................

19...................

21...................

22. ..................

24...................

25...................

26...................

27...................

28...................

29...................

31...................

Average .......

October

max min

November

max min

December

max min

January

max min

February

max min

March

max min

April

max min
SNAKE RIVER MAIN STEM--Continued

SNAKE RIVER AT OXBOW, OREG. Continued

Temperature (°F) of water, water year October 1956 to Septe

Day

2. ..................

3. ..................

4.... ...............

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

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

13. ..................

14...................

15. ..................

16. ..................

17. ..................

19...................

20. ..................

21. ..................

22. ..................

23...................

24...................

25. ..................

26. ..................

27. ..................

28. ..................

29. ..................

30. ..................

31. ..................

Average .......

October

max

61 

61 

61 

61 

61

61 

60 

60 

61 

61

61 

60 

58 

56 

55

56 

57 

57 

57 

56

55 

54 

52 

52 

49

48 

48 

49 

49 

49 

48

56

min

60 

60 

60 

61 

61

60 

60 

60 

60 

61

60

58 

56 

55 

55

55 

56 

57 

56 

55

54 

52 

52 

49 

48

48 

48 

48 

49 

48 

48

55

November

max

48 

46 

44 

44 

45

46 

48 

48 

48 

48

48 

48 

48 

46 

44

44 

42 

42 

42 

41

39 

39 

39 

39 

39

39 

39 

38 

37 

37

43

min

46 

44 

44 

44 

44

45 

46 

48 

48 

48

48 

47 

47 

44 

44

42 

42 

41 

41 

39

39 

39 

39 

39 

39

39 

38 

37 

37 

36

42

December

max

36 

36 

36 

36 

36

36 

36 

36 

34 

34

35 

37 

38 

39 

39

39 

39 

39 

39 

39

39 

39 

38 

38 

37

37 

37 

36 

36 

37 

37

37

min

36 

36 

36 

36 

36

36 

36 

34 

34 

34

34 

35 

37 

38 

39

39 

38 

39 

39 

39

39 

38 

38 

37 

37

37 

36 

36 

36 

36 

37

37

January

max

37 

37 

36 

36 

36

35 

35 

35 

35 

35

35 

35 

35 

36 

36

36 

34 

33 

32 

32

32 

33 

34 

34 

34

32 

32 

32 

32 

32 

33

34

min

37 

36 

36 

36 

35

35 

34 

34 

35 

35

35 

35 

35 

35 

36

34 

33 

32 

32 

32

32 

32 

33 

34 

32

32 

32 

32 

32 

32 

32

34

February

max

33 

33 

33 

33 

33

33 

34 

34 

35 

35

37 

38 

38 

39 

40

41 

41 

41 

40 

40

40 

39 

40 

40 

40

39 

39 

41

37

min

33 

33 

33 

33 

33

33 

33 

34 

34 

35

35 

37 

38 

38 

39

40 

41 

40 

40 

40

39 

39 

39 

40 

38

38 

39 

39

37

March

max

42 

42 

42 

43 

43

44 

44 

44 

45 

45

44 

44 

44 

43 

43

44 

45 

45 

46 

47

47 

46 

45 

46 

47

48 

48 

48 

48 

48 

48

45

min

41 

42 

42 

42 

43

43 

44 

44 

44 

44

44 

44 

43 

42 

42

43 

44 

45 

45 

46

46 

45 

44 

44 

46

47 

48 

48 

48 

48 

48

44

April

max

48 

48 

48 

48 

49

49 

49 

49 

50

52

52 

52 

53 

54 

54

54 

53 

54 

54 

53

52 

54 

56 

58 

59

52

min

48 

47 

47 

47 

48

49 

48 

48 

49

52

50 

51 

52 

53 

53

53 

53 

53 

53 

52

51 

52 

54 

56 

58

51
SALMON RIVER BASIN 

SALMON RIVER NEAR SHOUP, IDAHO

LOCShoSN '"Llmhi ecounty reC°rder at gaging station . °- 6 mi le upstream from Own Creek, 2.3 miles do

DRAIN AGE 'AREA. 6,210 square miles, approximately.

RECORDS AVAILABLE. Water temperatures: June 1956 to September 1957.

EXTREMES, June to September 1956. Water temperatures; Maximum, 70°F on several days in July

terh temP"aturef : Maximum, 70°F July 29, Aug. 4, 5, 9, 10; minimum, freezin

ischarge for water years October 1955 to September 1956 and October 1956 to 

spectively.

Temperature (°F) of water, June to September 1956

Day

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...................

Average .......

October

max min

November

max min

December

max min

January

max min

February

max min

March

max min

April

max min

m
SALMON RIVER BASIN Continued

SALMON RIVER NEAR SHOUP, IDAHO Continued

Temperature (°F) of water, water year October 1956 to Septem

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...................

October

max

54 

54 

54 

53 

53

52 

52 

52 

52 

52

51 

51 

51 

50 

48

48 

49 

49 

48 

47

46 

46 

44 

44 

43

42 

43 

43 

42 

41 

40

48

min

52 

52 

52 

52 

52

51 

51 

51 

52 

51

51 

51 

50 

48 

47

47 

47 

48 

47 

46

46 

44 

44 

43 

42

42 

42 

42 

41 

40 

40

47

November | December

max

40 

38 

38 

36 

37

39 

40 

40 

40 

40

40 

40 

40 

40 

38

36 

35 

36 

36 

34

34 

34 

33 

33 

33

33 

33 

33 

33 

33

36

mln

38 

38 

36 

36 

36

37 

39 

40 

40 

40

40 

40 

40 

38 

36

35 

35 

35

34 

34

34 

33 

33 

33 

33

33 

33 

33 

33 

33

36

max

33 

33 

33 

33 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

33 

33 

33 

32 

32

32

min

33 

33 

33 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32 

32 

32 

32 

32 

32 

32 

32 

32 

32

32 

32 

33 

32 

32 

32

32

January

max

32 

32 

32 

32 

33

33 

33 

32 

32 

32

32 

32 

32 

32 

32 

33 

33 

33 

33 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32

32

min

32 

32 

32 

32 

32

33 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32

32

February

max

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32

32

min

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32

32

March

max

32 

32 

32 

32 

32

32 

32 

32 

33 

32

32 

32 

34 

35 

36

39 

42 

43 

44 

44

43 

41 

41 

41 

41

43 

43 

44 

45 

46 

46

38

min

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

33 

34

36 

39 

40 

42 

42

41 

39 

38 

39 

40

40 

40 

42 

43 

45 

44

37

April

max

44 

44 

45 

46 

45

45

44 

47 

49 

49

49 

48 

49 

49 

49

47 

48 

48 

48 

50 

50 

51 

51 

49 

46

47 

51 

55 

58 

56

49

min

43 

42 

43 

44 

44

44 

43 

43 

46 

47

47 

46 

46 

47 

46

45 

46 

46 

47 

48

49 

48 

49 

46 

45

46 

46 

49 

53 

54

46

m
GRANDE RONDE RIVER BASIN 

GRANDE RONDE RIVER AT TROY, OREG.

LOCATION. Temperature recorder at gaging station, at Troy, Wallowa County, 100 feet downstream 

DRAINAGE AREA.--3,275 square miles.

RECORDS AVAILABLE. Water temperatures: May 1956 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 73'F July 29; minimum, freezing point many day

REMARKS. Recorder stopped Feb. 28 to Mar. 3, July 30-31, Aug. 31 to Sept. 11; range in tempera

year October 1956 to September 1957 given in WSP 1517.

Temperature (°F) of water, water year October 1956 to Septe

/'Recorder with temperature attachment, continuous ethyl alcohol-actua

Day

2. ..................

3.... ...............

4. ..................

5. ..................

6...................

7. ..................

8...................

9. ..................

10...................

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

12...................

13...................

15...................

16...................

17...................

18. ..................

20. ..................

21...................

22. ..................

24. ..................

25...................

26. ..................

27...................

28...................

29. ..................

30. ..................

31...................

October

max

53 

52 

52 

51 

52

51 

51 

53 

53 

52

52 

52 

51 

47 

49

49 

51 

51 

48 

48

49 

47 

45 

44 

44 

45 

45 

44 

43 

43 

43

49

min

48 

48 

48 

48 

48

47 

46 

48 

48 

51

50 

51 

47 

44 

46

48

48 

48 

46 

45

47 

43 

44 

43 

43 

44 

44 

43 

41 

42 

41

46

November

max

41 

39 

39 

39 

40

44 

44 

43 

42 

43 

45 

44 

43 

41 

37

38 

39 

39 

37 

35

35 

35 

35 

35 

35 

35 

36 

36 

35 

35

39

min

39 

37 

38 

38 

38

40 

43 

41 

41 

41

43 

42 

41 

37 

36

37 

38 

36 

35 

35

35 

35 

35 

35 

35 

35 

35 

35 

35 

34

38

December

max

34 

35 

36 

35 

35

34 

34 

34 

34 

35

37 

37 

37 

38 

38

38 

38 

38 

38 

38

38 

38 

37 

37 

37 

35 

34 

33 

33 

33 

33

36

min

34 

34 

35 

35 

34

34 

34 

34 

34 

34 

36 

37 

37 

37 

38

38 

38 

38 

38 

38

38 

37 

37 

37 

35 

34 

33 

33 

33 

33 

33

35

January

max

33 

33 

33 

33 

33

33 

33 

33 

33 

33 

33 

33 

33 

33 

33

33 

32 

32 

32 

32

32 

32 

32 

32 

32 

32 

32 

32 

32 

32 

32

33

min

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32 

32 

32 

32 

32 

32

32

February

max

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32 

32

32

min

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32 

32

32

March

max

40 

40

40 

40 

40 

40 

40

40 

40 

40 

40 

40

40 

40 

40 

43 

43

42 

42 

43 

45 

46 

44 

43 

43 

43 

44 

44

--

min

40 

40

40 

40 

40 

40 

40 

40 

40 

40 

39 

40

40 

40 

40 

40 

41

41 

40 

40 

42 

44 

40 

40 

42 

43 

43 

43

April

max

43

44 

44 

44 

44

43 

44 

45 

46 

47 

46 

46 

46 

46 

46

45 

46 

48 

48 

49

48 

48 

48 

46 

46 

48 

51 

55 

54 

51

47

min

42 

42 

43 

43 

43

41 

41 

40 

40 

43

43 

44 

43 

44 

42

42 

43 

42

45 

45

46 

44 

44 

44 

43 

43 

43 

46 

47 

46

43
CLEARWATER RIVER BASIN 

WARM SPRINGS CREEK ABOVE JERRY JOHNSON HOT SPRINGS, NEAR POWEL

LOCATION. Temperature recorder on right bank, 1 mile upstream from mouth and 8J miles southwest 

RECORDS AVAILABLE. Water temperatures: November 1956 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 62°F July 30, 31; minimum, freezing point on ma

REMARKS. Recorded range in temperature Sept. 11-22, 46'F to 55°F. Records of discharge for wate

Temperature (°F) of water, November 1956 to September 

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. ..................

Average .......

October

max mln

November

max

33 

34

34 

34 

34 

34 

34

35 

36 

36 

33 

32

32 

33 

32 

33 

33

32 

32 

32 

32 

32

32 

32 

32 

32 

32

33

min

33 

33

34 

33 

34 

34 

34

34 

35 

33 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

33

December

max

32 

32 

32 

32 

32

32 

33 

32 

32 

32

32 

32 

32 

33 

33

33 

33 

33 

33 

33

32 

32 

33 

33 

33

32 

32 

32 

32 

32 

32

33

min

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

33

33 

33 

33 

33 

32

32 

32 

32 

33 

32

32 

32 

32 

32 

32 

32

32

January

max

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

33

33 

33 

33 

33 

32

32 

32 

32 

33 

34

34 

34 

33 

33 

33 

33

32

min

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

33 

33 

33 

32 

32

32 

32 

32 

32 

33

34 

33 

33 

33 

33 

32

32

February

max

32 

32 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

34 

34 

34 

34

34 

33 

33 

33 

33

33 

34 

35

33

min

32 

32 

32 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

34 

34 

34

33 

33 

33 

33 

33

34 

34 

34

33

March

max

35 

35 

36 

36 

36

36 

36 

36 

36 

35

34 

35 

36 

35 

35

36 

36 

37 

36 

36

36 

35 

36 

36 

36

36 

37 

37 

37 

38 

36

36

min

34 

34 

35 

36 

34

35 

36 

36 

35 

34

34 

34 

35 

34 

34

35 

36 

36 

35 

35

35 

34 

35 

35 

36

35 

35 

35 

36 

36 

36

35

April

max

37 

38 

38 

38 

38

38 

38 

38 

40 

40

40 

39 

40 

40 

39

40 

38 

41 

42 

40

39 

41 

39 

38 

38

40 

43 

44 

44 

43

40

min

36 

37 

36 

36 

37

36 

36 

36 

36 

37

37 

37 

38 

37 

37

36 

37 

36 

38 

37

38 

38 

37 

36 

37

37 

38 

39 

38 

38

37
CLEARWATER RIVER BASIN--Continued 

WARM SPRINGS CREEK NEAR POWELL RANGER STATION

LOCATION. Temperature recorder at gaging station one-eighth of a mile upstream from mouth, and 8

DRAINAGE AREA.--74.7 square miles.

RECORDS AVAILABLE.--January to September 1957.

EXTREMES, January to September 1957. Water temperatures: Maximum, 65°F Aug. 19.

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1517.

Temperature (°F) of water, January to September 19

Day

3...................

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...................

October

max min

November

max min

December

max min

January

max

36 

35

35 

36 

36 

36 

36 

36

--

min

35 

35

35 

35 

36 

36 

36 

35

-

February

max

36 

36 

36 

36 

36 

37 

37 

37 

37 

36

37 

37 

38 

38 

38

37 

37 

37 

37 

36

37 

37 

37 

37 

36

36 

35 

36

37

min

36 

36 

36 

36 

36

36 

36 

37 

36 

36

36 

37 

36 

37 

37

36 

36 

36 

36 

36

36 

36 

36 

36 

36 

35 

35 

35

36

March

max

36 

36 

37 

37 

37

37 

37 

37 

38 

37

36 

38 

38 

37 

38

39 

39 

40 

40 

40

39 

38 

40 

39 

39

39 

41 

41 

40 

40 

39

38

min

35 

35 

36 

37 

35

36 

37 

37 

37 

36

36 

36 

37 

36 

36

38 

38 

38 

37 

37

37 

37 

37 

37 

38 

37 

38 

38 

39 

39 

38

37

April

max

40 

41 

40 

41 

40 

40 

41 

41 

42 

42

42 

41 

41 

40 

40

41 

39 

42 

43 

41

40 

42 

40 

39 

38 

41 

44 

45 

45 

44

41

min

39 

39 

39 

38 

39

38 

38 

38 

38 

39

39 

39 

39 

38 

38

37 

38 

38 

39 

38

39 

39 

38 

37 

38

38 

39 

40 

39 

39

38
CLEARWATER RIVER BASIN--Continued

LOCHSA RIVER NEAR LOWELL, IDAHO

LOCATION.--Temperature recorder at gaging station, 0.7 mile upstream from Lowell, Idaho County, 0

Pete King Creek, and 19 miles east of Kooskia. 

DRAINAGE AREA. 1,180 square miles, approximately.

RECORDS AVAILABLE.--Water temperatures: July 1956 to September 1957.

EXTREMES, July to September 1956.--Water temperatures: Maximum, 78°F July 30, Aug. 15. 

EXTREMES, 1956-57. Water temperatures: Maximum, 76°F July 30; minimum, freezing point Jan. 14, 

REMARKS. Recorder stopped Nov. 26, 1956 to Jan. 13, 1957; range 33°F to 41°F. Records of discha

and October 1956 to September 1957 given in WSP 1447 and WSP 1517 respectively.

Temperature (°F) of water, July to September 1956

Day

1.... ...............

3. ..................

4...................

5. ..................

6...................

7. ..................

8...................

9. ..................

10...................

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

12...................

14...................

15...................

16...................

17...................

18...................

19. ..................

20. ..................

22. ..................

23. ..................

24. ..................

25. ..................

26. ..................

27...................

28. ..................

29. ..................

30. ..................

31...................

Average.... ...

October

max

-

min

November

max min

December

max min

January

max min

February

max min

March

max min

April

max min
CLEARWATER RIVER BASIN--Continued

LOCHS A RIVER NEAR LOWELL, IDAHO Continue

Temperature (°F) of water, water year October 1956 to Sept

Day

1...................

14. ..................

15...................

16...................

17...................

18...................

19...................

20. ..................

21...................

22...................

23...................

24. ..................

25...................

29...................

30. ..................

31...................

October

max

58 

58 

56 

56 

57

55 

55 

55 

56 

56

56 

55 

54 

51 

50 

51 

52 

52 

51 

50

49 

48 

46 

45

44

mln

55 

53 

53 

53 

53

52 

51 

52 

53 

55

55 

54 

51 

50 

49

49 

50 

51 

50 

48

48 

46 

45 

45 

42

November

max

36 

37 

36 

36 

35

36 

36 

36 

35 

35

min

36 

36 

36 

35 

35

35 

35 

35 

35 

34

December

max

--

--

mln

"

--

Januar^

max

32 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

34 

34 

34 

34 

34 

34

min

32 

32

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

34 

34 

34 

34 

34

February

max

34 

34 

34 

34 

34

34 

34 

34 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

34

34 

34 

34 

34 

34

34 

36 

38

min

34 

34 

34 

34 

34

34 

34 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

34 

34 

34 

34 

34

34 

34 

36

March

max

37 

37 

38 

38 

38

39 

38 

39 

39 

38

38 

38 

39 

38 

39

41 

41 

42 

42 

41

41 

40 

41 

41 

40

41 

42 

42 

42 

41 

41

min

36 

36 

37 

38 

37

37 

38 

38 

38 

38

37 

37 

38 

37 

38

39 

40 

40 

40 

40

40 

39 

39 

40 

40

40 

39 

41 

41 

41 

41

April

max

41 

42 

42 

42 

42

41 

42 

44 

45 

45

45 

44 

45 

45 

43 

44 

44 

45 

45 

46

46 

44 

44 

44 

42

43 

46 

48 

49 

48

mln

41 

41 

42 

41 

41

40 

41 

41 

42 

44

43 

43 

43 

43 

42

42 

42 

42 

44 

44

44 

43 

44 

42 

41

42 

43 

45 

46 

46
CLEARWATER RIVER BASIN Continued 

SOUTH FORK CLEARWATER RIVER NEAR ELK CITY, ID

LOCATION. Temperature recorder at gaging station just upstream from bridge on road to Orogrande, 

west of Elk City, Idaho County. 

DRAINAGE AREA. 261 square miles.

RECORDS AVAILABLE.--Water temperatures: June 1956 to September 1957 (discontinued).

EXTREMES, 1956-57. Water temperatures: Maximum, 74°F July 12, 1956; minimum, freezing point on 

REMARKS. Records of discharge for water years October 1955 to September 1956, and October 1956 to 

respectively.

Temperature (°F) of water, June to September 1956

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...................

October

max min

November

max mln

December

max min

January

max min

February

max min

March

max min

April

max minm
CLEARWATER RIVER BASIN--Continued

SOUTH FORK CLEARWATER RIVER NEAR ELK CITY, IDAHO

Temperature (°F) of water, water year October 1956 to Septe

Day

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...................

Average .......

October

max

50 

51 

50 

50 

50

48 

48 

48 

49 

50

50 

50 

47 

45 

45

46 

48 

47 

45 

43

42 

40 

40 

40 

38

39 

39 

38 

37 

37 

36

45

min

47 

46 

46 

46 

46

44 

44 

46 

46 

48

49 

47 

45 

43 

43

44 

44 

45 

43 

40

40 

38 

38 

38 

37

37 

38 

36 

36 

36 

34

42

November

max

36 

35 

35 

34 

36

36 

36 

37 

37 

37

37 

37 

37 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

34

min

34 

34 

34 

34 

34

35 

36 

36 

37 

36

36 

37 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

34

December

max

33 

33 

33 

33 

33

33 

33 

33 

33 

33

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32

32

min

33 

33 

33 

33 

33

33 

33 

33 

33 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32

32

January

max

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33 

33

33

min

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33 

33

33

February

max

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33

33

min

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33 

33 

33

33 

33 

33

33

March

max

33 

33 

33 

33 

33

33 

33 

32 

32 

32

32 

32 

32 

33 

33

33 

32 

33 

32 

33

32 

32 

33 

33 

33

34 

35 

34 

34 

34 

34

33

min

33 

33 

33 

33 

33

33 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

33 

33 

33 

34 

34 

34

33

April

max

34 

36 

35 

37 

37

34 

37 

39 

41 

39

40 

40 

40 

40 

39

41 

40 

42 

41 

41

40 

40 

41 

41 

38

40 

45 

46 

47 

46

40

min

34 

34 

34 

35 

34

34 

34 

36 

36 

37

36 

37 

37 

37 

36

36 

37 

37 

38 

37

39 

38 

39 

38 

37

38 

39 

40 

41 

40

37
CLEARWATER RIVER BASIN Continued 

CLEARWATER RIVER AT KAMIAH, IDAHO

LOCATION. Temperature recorder at gaging station a quarter of a mile downstream from highway bri

downstream from Lawyer Creek, and 6 miles downstream from South Fork. 

DRAINAGE AREA. 4,850 square miles, approximately.

RECORDS AVAILABLE. Water temperatures: June 1956 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 79°F July 25, 29, 1956; minimum, 33°F on severa

REMARKS. Records of discharge for water years October 1955 to September 1956 and October 1956 to 

respectively.

Temperature (°F) of water, June to September 1956

Day

4. ..................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

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

12...................

14...................

15. ..................

18. ..................

19...................

20. ..................

21...................

22...................

23...................

24. ..................

25...................

26. ..................

27. ..................

28...................

30. ..................

31...................

October

max min

November

max min

December

max min

January

max min

February

max min

March

max min

April

max min
CLEARWATER RIVER BASIN Continued

CLEARWATER RIVER AT KAMI AH, IDAHO Contin

Temperature (°F) of water, water year October 1956 to Sep

Day

3...................

4...................

5. ..................

6...................

7. ..................

8. ..................

9. ..................

10...................

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

12...................

13. ..................

14...................

15...................

16...................

18...................

20. ..................

21...................

23...................

24. ..................

25...................

26...................

27...................

28...................

29. ..................

30. ..................

31...................

Average .......

October

max

60 

59 

60 

60 

60

60 

59 

59 

60 

58

58 

56 

56 

53 

53

53 

55 

54 

53 

52

51

48 

47 

47 

45

46 

45 

45 

46 

44 

45

53

mln

56 

55 

56 

56 

56

55 

54 

55 

55 

56

56 

55 

52 

50 

51

51 

52 

52 

50 

49

47 

45 

45 

45 

45

44 

43 

43 

43 

43 

43

50

November

max

43

43 

42 

40 

41

44 

43 

43 

43 

42

43

44 

44 

40 

38

39 

41 

39 

37 

36

39 

37 

37 

37 

36

36 

35 

35 

35 

34

40

min

41 

40 

39 

40 

39

41 

42 

41 

41 

41

42

42 

40 

38 

37

38 

38 

37 

36 

34

36 

36 

36 

36 

35

35 

35 

35 

34 

33

38

December

max

35 

35 

35 

35 

34

33 

34 

33 

34 

34

35 

36 

39 

38 

37

39 

38 

39 

39 

38

37 

37 

37 

38 

38

37 

35 

34 

34 

34 

36

36

min

34 

33 

34 

34 

33

33 

33 

33 

33 

33

34 

35 

36 

36 

37

37 

36 

38 

38 

37

36 

35 

36 

37 

37

34 

33 

33 

33 

33 

34

35

January

max

36 

35 

37 

36 

34

33 

34 

33 

35 

33

34 

35 

35 

35 

34

34 

35 

35 

35 

35

35 

34 

34 

34 

34

34 

34 

34 

34 

34 

34

35

min

35 

34 

35 

34 

33

33 

33 

33 

33 

33

33 

34 

35 

34 

34

34 

34 

35 

35 

35

34 

34 

34 

34 

34

34 

34 

34 

34 

34 

34

34

February

max

34 

34 

35 

34 

34

36 

35 

35 

35 

35

36 

36 

35 

36 

36

37 

36 

36 

36 

36

36 

35 

36 

36 

38

38 

38 

38

36

min

34 

34 

34 

34 

34

34 

35 

35 

35 

34

34 

35 

35 

35 

36

36 

36 

36 

36 

35

34 

34 

34 

36 

36

36 

36 

36

35

March

max

38 

38 

38 

38 

40

42 

42 

41 

40 

42

39 

40 

41 

42 

43

44 

44 

47 

47 

46

43 

42 

45 

45 

45

46 

46 

46 

46 

45 

43

43

mln

36 

36 

38 

38 

38

38 

41 

40 

39 

38

38 

38 

38 

37 

38

40 

39 

41 

40 

41

40 

39 

39 

40 

42

39

39 

40 

44 

43 

42

39

April

max

42 

45 

47 

45 

46

44 

46 

49 

51 

49

51

49 

50 

48 

49

49 

47 

50 

48 

51

48 

49 

47 

45 

44

49 

52 

54 

54 

51

48

mln

41 

41 

42 

41 

44

42 

42 

41 

42 

45

44 

45 

44 

46 

44

42 

43 

43 

45 

43

46 

45 

44 

43 

42

42 

42 

45 

48

47

43
SNAKE RIVER MAIN STEM

SNAKE RIVER AT CENTRAL FERRY NEAR POMEROY, W

LOCATION. At bridge on U. S. Highway 295 at Central Ferry, Garfield County, 14 miles northwest of 

near Clarkston.

DRAINAGE AREA. 103,200 square miles, approximately (at gaging station). 

RECORDS AVAILABLE.--Chemical analyses: October 1955 to September 1957.

Water temperatures: October 1955 to September 1957.

EXTREMES, 1956-57. Dissolved solids: Maximum, 269 ppm Oct. 1-15; minimum, 69 ppm June 1-15. 

Hardness: Maximum, 150 ppm Jan. 1-31; minimum, 22 ppm Apr. 27-30.

Specific conductance: Maximum daily, 449 micromhos Oct. 18; minimum daily, 93 micromhos June 6. 

Water temperatures: Maximum, 76°F July 25; minimum, freezing point Feb. 16-18, 20.

EXTREMES, 1955-57. Dissolved solids: Maximum, 269 ppm Oct. 1-15, 1956; minimum, 68 ppm May 15-31, 

Hardness: Maximum, 150 ppm Jan. 1-31, 1957; minimum, 22 ppm Apr. 27-30, 1957.

Specific conductance: Maximum daily, 449 micromhos Oct. 18, 1956; minimum daily, 73 micromhos May 

Water temperatures: Maximum, 79°F July 25, 1956; minimum, freezing point on several days during 

REMARKS. Chemical quality samples were collected at station near Clarkston, Washington (1 mile dow

ber 1955. Records of specific conductance of daily samples available in district office at Portl

Clarkston for water year October 1956 to September 1957 given in WSP 1517. No appreciable inflow 

periods of heavy local runoff.

Chemical analyses, in parts per million, water year October 1956 to S

Date of collection

Oct. 1-15, 1956.. 

Oct. 16-31.......

Nov. 1-30 .......

Dec. 1-4, 31..... 

Jan. 1-31, 1957..

Feb. 26-28 ......

Mar. 22-31 ......

July 1-17 ........

July 18-31 .......

Mean 

discharge 

(cfs)

25,780 

28,920 

28, 100 

25,840 

23, 960

26, 500 

119,800 

70,990 

57, 540 

86,860 

81,720

197,400 

203, 400 

179,700 

75, 380 

42,470 

27.990

Silica 

(SiO,)

Iron 

(Fe)

Calcium 

(Ca)

36 

36 

35 

37 

37

34 

17 

21 

17 

17 

6.0

11 

13 

10 

14 

19 

25

Magsium 

(Mg)

13 

12 

12 

12 

14

12 

5.5 

6.9 

6.0 

5.0 

1.6

2.0 

3.6 

2.6 

3.5 

6.2 

7.8

Sodium 

(Na)

35 

34 

31 

31 

31

26 

13 

16 

12 

12 

7.1

6.5 

7.9 

6.6 

10 

17 

25

Potassium 

(K)

Bicarbonate 

(HCO,)

168 

164 

158 

162 

168

153 

78 

98 

80 

78 

50

45 

59 

48 

64 

91 

121

Sulfate 

(SO,)

54 

54 

49 

47 

51

44 

18 

24 

17 

17 

9.7

8.8 

13 

9.7 

14 

25 

37

Chloride

(CD

18 

18 

16 

16 

18

16 

5.5 

8.5 

6.5 

6.0 

3.5

2.5 

4.8 

3.2 

4.2 

8.0 

11

Fluoride 

(F)

Nitrate 

(NO,)

2.2 

2.4 

2.3 

2.1 

2.3

2.6 

4.1 

2.1 

1.3 

1.2 

.7

.5 

.7 

.5 

.5 

.7 

1.0

Boron 

(B)

0.05

.01 

.01

.04 

.06 

.05

.04

.05 

.08.
Aug. 1-14, 1957..

Weighted average^

Weighted average"

23,310

61,060

58,980

29

19

19

10

5.7

5.9

30

QC

15

15

140

85

88

44

EO

22

23

15

7.4

7.8

1.3

1.2

1.2

"

"

a Represents 96 percent of runoff for water year October 1956 to September 1957.

b Includes estimated data for missing periods. Represents 100 percent of runoff for water year October 1956 to September 1957
456 SNAKE RIVER BASIN 

SNAKE RIVER MAIN STEM Continued 

SNAKE RIVER AT CENTRAL FERRY NEAR POMEROY, WASH. Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 4 p.in./

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

Average

Oct.

60

60

62

61

60

60

61

61

62

59

59

59

59

58

56

56

56

55

54

54

54

50

50

51

50

48

47

47

47

47

55

Nov.

46

45

45

45

45

45

45

45

45

45

45

45

45

45

45

--

..

..

40

40

40

--

Dec.

40

40

40

39

__

40

40

40

_

40

42

42

42

42

42

42

42

40

40

40

"

40

38

40

40

40

38

..

Jan.

38

38

38

38

38

36

36

36

36

34

34

34

34

..

34

34

34

34

..

--

-

..

-.

--

..

Feb.

--

_

--

_

_

_

--

32

32

32

32

35

35

35

35

35

--

Mar.

35

35

35

35

35

35

35

35

35

37

35

37

40

40

40

40

40

40

40

40

40

40

40

40

40

40

38

Apr.

40

40

40

43

43

43

43

43

43

43

43

43

43

43

43

43

43

45

..

45

45

45

45

45

45

45

45

48

44

May

45

45

45

45

45

45

45

45

45

45

53

53

"

53

53

-

57

58

60

60

60

62

62

60

June

62

62

62

62

62

60

60

60

58

60

60

60

60

60

60

60

60

62

64

63

63

64

65

65

66

68

--

62

July

68

69

70

70

..

72

71

72

73

74

74

74

73

73

72

72

73

73

74

72

75

76

73

74

74

75

73

73

Aug.

73

75

74

73

74

74

75

75

75

..

..

75

74

74

--

..

74

75

72

74

74

74

73

Sept.

73

73

73

73

--

73

73

--

--

72

72

72

70

70

71

..

70

69

65

..

65

67

66

66

_
PART 14. PACIFIC SLOPE BASINS IN OREGON AND LOWER COLUMB

JOHN DAY RIVER BASIN 

DESOLATION CREEK NEAR DALE, OREG.

LOCATION. Temperature recorder at gaging station, three-quarters of a mile upstream from mouth a

DRAINAGE AREA. 108 square miles.

RECORDS AVAILABLE. Water temperatures: July 1950 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 72°F July 10; minimum, freezing point many days 

EXTREMES, 1950-57. Water temperatures: Maximum, 76°F July 24, 1951; minimum, freezing point man

REMARKS. Recorder stopped, Dec. 8-13, May 27 to June 3; range 34*F to 35°F, 46°F to 55"F during 

October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septem

/Recorder with temperature attachment, continuous ethyl alcohol-actua

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...................

October

max

52 

52 

53 

53 

52

50 

50 

51 

53 

53

51 

49 

48 

45 

49 

48 

50 

50 

46 

46

45 

42 

42 

39 

41

43 

41 

39 

39 

41 

39

47

mln

45 

45 

45 

46 

46

43 

43 

47 

46 

51

49 

48 

45 

40 

43

43 

46 

45 

41 

40

42

37 

38 

37 

39

41 

38 

37 

35 

39 

35

42

November

max

35 

35 

38 

39 

39

43 

40 

40 

40 

42

41 

39 

39 

36 

35 

37 

38 

36 

34 

33

33 

33 

33 

33 

38 

33 

33 

33 

33 

33

36

min

34 

32 

33 

37 

34

39 

37 

36 

35 

37

37 

34 

36 

35 

33 

33 

36 

33 

33 

33

33 

33 

33 

33 

33 

33 

33 

33 

33 

33

34

December

max

34 

34 

33 

33 

34

34 

34

36 

35 

35 

36 

37 

36 

33

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32

--

mln

30 

33 

33 

33 

34

34 

34

34 

34 

34 

34 

35 

33 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32

--

January

max

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

33 

33 

33 

33 

33 

33 

32

32

mln

32 

32 

32 

32 

32

32 

32 

32 

32 

32 

32 

32 

32 

32 

32

32 

32 

32 

32 

32

32 

32 

32 

32 

32

33 

33 

32 

32 

32 

32

32

February

max

32 

32 

32 

32 

33

33 

33 

33 

33 

33 

33 

33 

33 

33 

33

33 

34 

34 

34 

34

34 

33 

33 

33 

33

33 

35 

35

33

min

32 

32 

32 

32 

32

33 

33 

33 

33 

33 

33 

33 

33 

33 

33 

33 

33 

33 

33 

34

33 

33 

33 

32 

33 

33 

33 

33

33

March

max

36 

34 

38 

36 

38

37 

37 

37 

36 

37

37 

36 

35 

35 

41 

39 

37 

40 

41 

38

37 

38 

41 

42 

40

41 

40 

40 

41 

42 

40

37

min

33 

33 

33 

33 

33

35 

36 

35 

35 

34

34 

33 

33 

33 

34

34 

33 

35 

34 

35

34 

34 

34 

37 

38

34 

34 

37 

38 

36 

36

35

April

max

39 

42

41 

41 

41

41 

43 

46 

46 

44 

45 

44 

44 

43 

46

44 

44 

46 

44 

44

43 

44 

44 

42 

44 

46 

49 

51 

50 

47

44

min

36 

35 

37 

38 

36

36 

36 

37 

37 

38

40 

39 

38 

40 

37 

37 

40 

38 

41 

40

41 

39 

38 

39 

38

39 

39 

41 

41 

40

38
DESCHUTES RIVER BASIN

DESCHUTES RIVER NEAR CULVER, OREG.

LOCATION. Temperature recorder at gaging station, 0.7 mile downstream from bridge on Cove-Grandv

4 miles northwest of Culver, Jefferson County. 

DRAINAGE AREA. 2,723 square miles.

RECORDS AVAILABLE. Water temperatures: August 1952 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 60°F on several days during June, July and Augu

EXTREMES, 1952-57. Water temperatures: Maximum, 64°F July 13, 17, 1956; minimum, 38°F on severa

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septemb

/Recorder with temperature attachment, continuous ethyl alcohol-actuat

Day

1............ .......

2. ..................

3...................

4. ..................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

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

12...................

13. ..................

14. ..................

15...................

16...................

17. ..................

18. ..................

20...................

21...................

22...................

23. ..................

24...................

25. ..................

26. ..................

27...................

28...................

29. ..................

30. ..................

31. ..................

October

max

55 

55 

54 

54 

54

54 

53 

53 

54 

54 

54 

53 

53 

53 

52

52 

52 

52 

52 

51

51 

51 

50 

49 

48 

48 

48 

48 

46 

46 

46

51

min

54 

54 

54 

53 

53

53 

52 

52 

53 

54

53 

52 

52 

51 

51

52 

52 

52 

51 

50

51 

50 

49 

48 

48 

48 

48 

46 

46 

46 

45

51

November

max

45 

45 

45 

45 

45

46 

46 

46 

46 

46

46 

46 

46 

46 

44

45 

45 

45 

44 

43

42 

42 

42 

42 

42 

42 

42 

42 

42 

42

44

min

44 

44 

44 

45 

44

45 

46 

46 

46 

46

46 

45 

46 

44 

44

44 

45 

44 

43 

42

42 

42 

42 

42 

42 

42 

42 

42 

42 

42

44

December

max

42 

42 

42 

43 

43

42 

42 

42 

42 

43

44 

44 

44 

44 

43

43 

43 

43 

43 

43

42 

42 

41 

41 

41 

41 

41 

41 

41 

41 

42

42

min

42 

42 

42 

42 

42

42 

42 

42 

42 

42

43 

43 

44 

43 

42

43 

43 

43 

42 

42

42 

41 

41 

41 

41 

41 

41 

41 

41 

41 

41

42

January

max

42 

42 

42 

41

41

41 

41 

41 

41 

41

41 

42 

42. 

41 

41

41 

41 

41 

41 

41

41 

41 

41 

40 

40 

40 

40 

40 

40 

40 

40

41

min

42 

41 

41 

41 

41

41 

41 

41 

41 

41 

41 

41 

41 

41 

41

41 

41 

41 

41 

41

41 

40 

40 

40 

40 

40 

40 

40 

40 

40 

40

41

February

max

40 

40 

40 

40 

41

41 

42 

42 

42 

42 

42 

42 

42 

43 

43

43 

43 

43 

43 

43

42 

41 

43 

44 

44 

44 

44 

44

42

min

40 

40 

40 

40 

40

41 

41 

42 

42 

42

42 

42 

42 

42 

43

43 

43 

43 

43 

42

41 

41 

41 

43 

44

44 

44 

44

42

March

max

44 

44 

44 

44 

44

44 

44 

44 

45 

45

45 

45 

44 

44 

44

44 

44 

44 

44 

44

44 

44 

44 

44 

45 

45 

45 

45 

45 

45 

45

44

min

44 

44 

43 

44 

44

44 

44 

44 

44

45 

45 

44 

44 

44 

44

44 

44 

44 

43 

44

44 

44 

44 

44 

44 

45 

45 

45 

45 

45 

45

44

April

max

45 

45 

45 

45 

45

45 

45 

46 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

50 

50 

52 

54 

55 

55

49

min

45 

45 

45 

45 

45

45 

45 

45 

46 

49

49 

49 

49 

49 

49

49 

49 

49 

49

49

49 

49 

49 

49 

49 

49 

50 

52 

53 

55

48

m
DESCHUTES RIVER BASIN Continued

CROOKED RIVER NEAR CULVER, OREG.

LOCATION. Temperature recorder at gaging station, 1 mile upstream from mouth, 1.2 miles downstre

Culver, Jefferson County.

DRAINAGE AREA. 4,330 square miles, approximately, of which 500 square miles is probably noncont

RECORDS AVAILABLE. Water temperatures: July 1952 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 61°F May 29 to June 3, 5j minimum, 43°F Feb. 

EXTREMES, 1952-57. Water temperatures: Maximum, 63°F July 14, 1953; minimum, 40°F Dec. 24, 25, 

REMARKS. Recorder stopped Nov. 11-14, Dec. 2-18, Feb. 28 to Mar. 11; range, 44°F to 48°F durin

for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septe

/Recorder with temperature attachment, continuous ethyl alcohol-actu

Day

1...................

2. ..................

4...................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

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

12. ..................

14...................

15. ..................

16. ..................

17...................

18...................

19. ..................

20. ..................

21...................

22. ..................

23. ..................

24. ..................

25...................

26...................

27...................

29. ..................

30...................

31. ..................

Average .......

October

max

57 

57 

57 

57 

57

57 

57 

56 

56 

56

56 

56 

56 

56 

56

56 

56 

56 

56 

56

56 

56 

55 

55 

54

54 

54 

54 

54 

54 

54

56

min

57 

57 

57 

57 

57

57 

56 

56 

56 

56

56 

56 

56 

56 

56

56 

56 

56 

56 

56 

56 

55 

55 

54 

54

54 

54 

54 

54 

54 

54

56

November

max

54 

54 

54 

54 

54

54 

54 

54 

54 

54

54

54 

54 

54 

54 

52

52 

52 

52 

52 

52

52 

52 

52

51 

51

-

mln

54 

54 

54 

54 

54

54 

54 

54 

54 

54

54

54 

54 

54 

52 

52 

52 

52 

52 

52 

52

52 

52 

51 

51 

51

--

December

max

51

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51 

51

--

mln

51

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51 

51

--

January

max

51 

51 

51 

51 

51 

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51 

51

51

min

51 

51 

51 

51 

51 

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51 

51 

51 

51 

51 

51

51 

51 

51 

51 

51 

51

51

February

max

51 

51 

51 

51 

51

51 

51 

51 

50 

50

50 

51 

52 

53 

53

53 

52 

52 

52 

52

51 

51 

51 

51 

44

44 

45

-

min

51 

51 

51 

51 

51

51 

51 

50 

50 

50

50 

50 

51 

52 

53

52 

52

51 

51 

51

51 

51 

51 

43 

43

44 

44

--

March

max

48 

48 

48 

48

49 

49 

48 

49 

49

49 

48 

49 

50 

52

52 

52 

51 

52 

52 

50

-

min

48 

48 

48 

48

48 

48 

48 

48 

49

48 

48 

48 

49 

50

51 

51 

51 

51 

50 

50

--

April

max

50 

49 

49 

50 

50

50 

50 

50 

52 

53

53 

53 

53 

52 

52

52 

52 

53 

53 

53 

53 

54 

54 

54 

54

54 

55 

56 

58 

58

53

min

49 

49 

49 

49 

50

50 

49 

49 

50 

52

52 

52 

52 

52 

52

52 

52 

52 

53 

53 

53 

53 

53 

54 

53

53 

53 

55 

56 

57

52
DESCHUTES RIVER BASIN Continued

METOLIUS RIVER NEAR GRANDVIEW, OREG.

LOCATION. Temperature recorder at gaging station, three-quarters of a mile upstream from Street 

northwest of Culver, Jefferson County.

DRAINAGE AREA. 324 squa e miles, hydrologic drainage boundary uncertain owing to ground-water ex

RECORDS AVAILABLE. Wate temperatures: July 1952 to September 1957.

EXTREMES, 1956-57. Wate temperatures: Maximum, 56°F July 5; minimum, 39°F Feb. 20-22.

EXTREMES, 1952-57.--Wate temperatures: Maximum, 56°F July 5, 1957; minimum, 38°F Jan. 31, Feb. 

REMAiUCS. Records of dis barge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septem

/Recorder with temperature attachment, continuous ethyl alcohol-actuat

Day

1...................

2. ..................

3. ..................

4. ..................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10...................

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

12...................

13...................

14...................

15...................

16...................

18...................

19...................

20. ..................

21...................

22...................

23. ..................

24...................

25...................

26...................

27...................

28. ..................

29. ..................

30. ..................

31...................

October

max

48 

48 

48 

48 

48

47 

47 

48 

48 

48

47 

47 

46 

46 

47

47 

47 

47 

46 

47

47 

46 

45 

45 

45

45 

45 

45 

45 

45 

45

47

min

46 

46 

46 

46 

46

46 

45 

46 

46 

47

46 

45 

45 

45 

46

46 

46 

46 

45 

45

46 

45 

45 

44 

45

45 

44 

44 

44 

44 

44

45

November

max

45 

45 

45 

45 

47

47 

46 

46 

46 

46

45 

46 

46 

45 

45

46 

46 

44 

44 

43 

43 

43 

43 

43 

43

43 

43 

43 

43 

43

45

min

44 

44 

44 

45 

45

46 

46 

45 

45 

44

44 

44 

45 

44 

44

44 

44 

44 

43 

42

43 

42 

42 

42 

43

43 

43 

43 

43 

42

44

December

max

43 

43 

43 

43 

43 

42 

42 

43 

44 

43

43 

44 

44 

43 

43

43 

44 

44 

44 

42

42 

42 

43 

43 

42

42 

42 

41 

42 

42 

42

43

min

42 

42 

42 

43 

42

42 

42 

42 

42 

43

42 

42 

43 

43 

43

43 

43 

44 

42 

42 

41 

41 

42 

42 

41

41 

41 

40 

40 

41 

42

42

January

max

42 

42 

42 

42 

41

42 

42 

42 

42 

42

42 

42 

42 

42 

41

40 

40 

40 

40 

41 

42 

42 

42 

41 

40

40 

40 

40 

40 

41 

42

41

min

42 

42 

41 

41 

41

41 

42 

41 

40 

41

42 

42 

41 

41 

40

40 

40 

40 

40 

40 

40 

42 

41 

40 

40

40 

40 

40 

40 

40 

41

41

February

max

42 

42 

42 

42 

43

43 

42 

42 

42 

42

42 

42 

43 

43 

43

43 

42 

42 

42 

42 

40 

40 

42 

42 

42

42 

42 

43

42

min

41 

40 

41 

41 

42

41 

40 

41 

42 

40

42 

41 

42 

42 

41

42 

41 

41 

41 

39

39 

39 

40 

42 

42

41 

41 

41

41

March

max

43 

43 

43 

43 

43

43 

43 

43 

42 

42

42 

42 

43 

42 

43

43 

43 

44 

44 

44 

43 

43 

44 

45 

45

45 

45 

45 

45 

44 

44

43

min

42 

42 

41 

42 

41

41 

42 

42 

42 

41

41 

41 

41 

41 

42

41 

41 

42 

41 

42 

42 

42 

41 

42 

43

41 

42 

43 

44 

43 

43

42

April

max

45 

45 

45 

46 

45

45 

45 

46 

47 

46

46 

46 

45 

45 

46

45 

46 

46 

46 

46

46 

47 

46 

46 

46

47 

48 

49 

49 

48

46

min

42 

42 

43 

44 

43

42 

42 

42 

43 

44

43 

44 

43 

44 

43

43 

43 

44 

43 

43 

43 

43 

43 

43 

43

43 

44 

44 

45 

46

43
DESCHUTES RIVER BASIN Continued 

DESCHUTES RIVER NEAR MADRAS, OREG.

LOCATION. Temperature recorder at gaging station, 1 mile downstream from Pelton dam, 5 miles up

Madras, Jefferson County, at mile 101.6 (U.S.G.S. Plan and Profile). 

DRAINAGE AREA. 7,800 square miles, approximately.

RECORDS AVAILABLE. Water temperatures: March 1952 to November 1956.

EXTREMES, October to November 1956. Water temperatures: Maximum, 55'F Oct. 9-11; minimum, 48"F 

EXTREMES, 1952-56. Water temperatures: Maximum, 59°F on several days during summer months, 195

months 1953, 1956. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, October to November 195

/Recorder with temperature attachment, continuous ethyl alcohol-actu

Day

3...................

4...................

5. ..................

6...................

7. ..................

8. ..................

9. ..................

10. ..................

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

12...................

14...................

15...................

16. ..................

18...................

19...................

20...................

21...................

22...................

23. ..................

24. ..................

25...................

26. ..................

29. ..................

30. ..................

31...................

Average .......

October

max

54 

54 

54 

54 

54

54 

53 

54 

55 

55

55 

54 

53 

53 

53

53 

53 

53 

53 

53

53 

53 

52 

52 

51

50 

50 

50 

50 

50 

50

53

min

53 

54 

54 

54 

53

53 

53 

53 

54 

54

54 

53 

53 

52 

52

53 

53 

53 

52 

52

53 

52 

52 

51 

51

50 

50 

50 

50 

50 

49

52

November

max

49 

49 

49 

49 

50

50 

50 

50 

50 

50

50 

50 

50 

50 

49

49 

50 

50 

50 

49

48 

48 

48 

48 

48

48 

48 

48 

48 

48

49

min

49 

49 

49 

49 

49

50 

50 

50' 

50 

50

50 

50 

50 

49 

49

49 

49 

50 

49 

48

48 

48 

48 

48 

48

48 

48 

48 

48 

48

49

December

max min

January

max min

February

max min

March

max min

April

max min
DESCHUTES RIVER BASIN Continued

DESCHUTES RIVER AT MOODY, NEAR BIGGS, ORE

LOCATION. Temperature recorder at gaging station at Moody, 1 mile upstream from mouth, and 4 m

DRAINAGE AREA. 10,500 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: August 1911 to July 1912, December 1952 to February 1954

Water temperatures: December 1952 to February 1954, October 1954 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 69°F June 1; minimum, 34°F Jan. 26-31.

EXTREMES, 1954-57. Water temperatures: Maximum, 70°F July 14, 1955, July 20, 21, 1956; minimum

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

_ Temperature (°F) of water, water year October 1956 to Sept

/Recorder with temperature attachment, continuous ethyl alcohol-actu

Day

3...................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

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

12...................

13...................

15...................

16...................

17...................

18. ..................

19...................

20. ..................

21...................

22...................

23. ..................

24. ..................

25...................

26. ..................

27. ..................

28...................

29...................

30...................

31...................

October

max

56 

56 

56 

55 

55

55 

55 

55 

56 

56

55 

55 

54 

53 

53

53 

53 

53 

53 

52

52 

51 

49 

47 

48

49 

49 

48 

48 

49 

48

52

min

55 

55 

54 

54 

53

53 

53 

53 

54 

55

54 

53 

52 

52 

52

52 

52 

52 

52 

50

51 

49 

47 

47 

47

48 

48 

47 

47 

48 

48

51

November

max

48 

48 

48 

48 

48

50 

50 

50 

50 

50

49 

50 

51 

49 

48

48 

49 

48 

47

45

43 

43 

43 

43 

43

43 

44

44 

44 

44

47

min

47 

47 

47 

47 

47

48 

50 

50 

50 

49

48 

49 

49 

48 

48

47

47 

47 

45 

43

42 

43 

43 

43 

43

43 

43 

44 

44 

44

46

December

max

44 

44 

44 

44 

44

43 

40 

39 

42

45

46 

46 

46 

46 

46

46 

46 

46 

46

46

44 

44 

44 

43 

43

43 

42 

42 

42 

42 

42

44

min

44 

44 

44 

44 

43

40 

39 

39 

39 

42

45 

46 

46 

46 

46 

46 

46 

46 

46 

44

44 

44 

43 

43 

43

42 

42 

42 

42 

42 

42

43

January

max

42 

42 

42 

42 

42

42 

42 

42 

42 

42

43 

43 

43 

42 

42

40 

38 

37 

36 

36

38 

39 

39 

39 

38 

36 

34 

34 

34 

34 

39

39

min

42 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

40

38 

37 

36 

36 

36

36

38 

38 

38 

36 

34 

34 

34 

34 

34 

34

39

February

max

41 

41

41 

41 

42

43 

43 

43 

44 

44

44 

45 

45 

46 

46 

46 

46 

46 

46 

45

49 

42 

42 

45 

46

46 

46 

46

44

min

39 

40 

41 

41 

41

42 

43 

43 

43

44

44 

44 

44 

45 

46

46 

46 

46

45 

44

42 

41 

41 

42 

45

46 

46 

46

43

March

max

46 

46 

47 

47 

47

47 

46 

47 

47 

47

47 

47 

47 

47 

46 

47 

47 

47 

48 

48

48 

48 

48 

49 

51

52 

52 

52 

52 

52 

52

48

min

46 

46 

46

47 

47

46 

46 

46 

47 

47

47 

47 

46 

46 

46

46 

47 

47 

47 

48

48 

47 

47 

48 

49

50 

51 

51 

51 

52 

52

48

April

max

52 

51 

52 

52 

52

52 

52 

52 

53 

54

55 

55 

55 

54 

54

54 

55 

55 

55 

55

55 

55 

55 

55 

55

56 

58 

60 

62 

63

55

min

51 

51 

51 

52 

52

50 

50 

51 

51 

53

54 

54 

54 

54 

53

52 

54 

54 

54 

54

54 

54 

54 

54 

54

54 

55 

57 

59 

61

54
COLUMBIA RIVER MAIN STEM

COLUMBIA RIVER AT MARYHILL FERRY NEAR RUFUS, ORE

LOCATION (revised). At Maryhill Ferry about 2i miles downstream from Rufus, Sherman County, about 6 

miles upstream from gaging station at The Dalles, Wasco County.

DRAINAGE AREA. 237,000 square miles, approximately (at gaging station at The Dalles). 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1957.

Water temperatures: December 1950 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 138 ppm Feb. 1-28; minimum, 79 ppm June 1-30.

Hardness: Maximum, 92 ppm Oct. 16-31, Feb. 1-28; minimum, 55 ppm May 1-31.

Specific conductance: Maximum daily, 242 micromhos Oct. 24; minimum daily, 116 micromhos June 3.

Water temperatures: Maximum, 72°F Aug. 11, 17; minimum, 33°F Jan. 27, 28, 31, Feb. 1. 

EXTREMES, 1950-57 . Dissolved solids: Maximum, 163 ppm Dec. 2-15, 1955; minimum, 74 ppm May 21-31, 1

Hardness: Maximum, 104 ppm Dec. 21-31, 1952; minimum, 45 ppm May 21-31, 1956.

Specific conductance: Maximum daily, 324 micromhos Dec. 7, 1955; minimum daily, 102 micromhos May 

Water temperatures: Maximum, 77°F Sept. 4-6, 1953; minimum, freezing point on several days during 

REMARKS. Records of specific conductance of daily samples available in district office at Portland, 

Dalles for water year October 1956 to September 1957 given in WSP 1518. Discharge records include 

amounts to less than 5 percent of the flow at the gaging station.

Chemical analyses, in parts per million, water year October 1956 to Sep

Date of collection

Oct. 1-15, 1956.. 

Oct. 16-31.......

Dec. 1-31 ....... 

Jan. 1-31, 1957..

May 1-31 ........ 

June 1-30 .......

Weighted average

Mean 

discharge 

(cfs)

108,100 

110,500 

109, 400 

113,000 

112,600

120,300 

149,500 

188,900 

517,700

479,400 

203,300 

125,900 

98,770 

94, 290

194, 100

Silica 

(Si02)

11 

13 

19 

7.2

-

Iron 

(Fe)

0.01 

.02 

.08 

.00

-

Calcium 

(Ca)

25 

25 

20 

19

-

Magnesium 

(Mg)

5.5 

6.4 

3.7 

4.5

-

Sodium 

(Na)

11 

13 

12 

11 

9.5

11 

10 

8.2

4.4

3.8 

5.3 

7.7 

9.6 

11

7.1

Potassium 

(K)

1.7 

1.7 

1.9 

1.3

"

Bicarbonate 

(HCO,)

97 

102 

102 

98 

100

104 

89 

81 

61

64 

75 

88 

93 

100

79

Sulfate 

(S04)

21 

21

14 

14

-

Chloride 

(Cl)

5.0 

5.5 

5.5 

5.0 

4.8

5.2 

4.8 

3.5 

1.8

1.2 

2.0 

3.5 

3.5 

5.0

3.0

Fluoride 

(F)

0.2 

.3 

.3 

.2

"

Nitrate 

(NO,)

1.0 

1.2 

.8 

.3

"

Boron 

(B)

0.04 

.01 

.06

.05

"

P

m

l
464 PACIFIC SLOPE BASINS IN OREGON AND LOWER COLUMBIA RIVER BASIN

COLUMBIA RIVER MAIN STEM Continued 

COLUMBIA RIVER AT MARYHILL FERRY NEAR RUFUS, OREG.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 2 p. mj

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

Average

Oct.

59

60

60

59

60

60

59

59

60

59

61

60

59

60

60

61

56

59

60

58

59

57

55

54

54

55

55

54

54

53

54

58

Nov.

52

53

52

52

54

54

52

53

52

52

51

49

46

49

50

50

50

51

51

50

49

54

BJ

54

53

51

49

49

48

48

--

51

Dec.

47

45

45

46

45

45

44

45

46

42

44

43

42

43

42

42

42

40

38

39

40

39

40

40

39

40

41

40

41

40

39

42

Jan.

38

39

39

40

40

39

38

38

38

37

37

36

36

35

35

35

36

36

35

35

35

36

35

35

34

34

33

33

34

34

33

36

Feb.

33

34

34

34

36

35

35

37

36

38

38

38

37

38

38

39

40

39

40

40

42

43

43

43

44

45

44

44

-.

--

39

Mar.

43

43

43

40

39

39

40

40

40

40

45

47

49

49

49

50

50

49

50

51

51

52

50

51

51

52

51

52

52

52

53

47

Apr.

53

52

54

54

54

54

55

57

57

57

58

58

58

58

55

53

54

54

52

52

53

53

53

54

53

52

52

53

55

54

54

May

53

54

52

52

52

53

53

53

53

52

52

50

50

52

52

52

53

53

54

56

55

57

57

56

57

..

56

56

57

57

56

54

June

56

58

58

57

57

56

60

61

61

62

62

61

62

63

63

63

62

62

62

63

64

63

63

64

64

64

65

64

65

65

62

July

64

64

65

64

65

65

66

66

65

65

65

66

68

68

68

68

68

68

69

70

69

70

70

70

70

70

69

69

69

69

67

Aug.

70

69

67

70

70

70

70

69

70

71

72

69

69

68

69

70

72

71

69

68

70

70

70

69

69

71

70

71

69

69

70

70

Sept.

68

69

70

70

70

64

64

64

63

63

62

62

62

62

62

60

60

60

60

60

60

58

59

68

68

70

70

70

70

70

--

65
KLICKITAT RIVER BASIN 

KLICKITAT RIVER NEAR PITT, WASH.

LOCATION. Temperature recorder at gaging station, 3J miles (revised) south of Pitt, Klickitat 

7 miles upstream from mouth.

DRAINAGE AREA. 1,290 square miles, approximately.

RECORDS AVAILABLE. Water temperatures: August 1950 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 65°F July 21-23. 1957. 

EXTREMES, 1950-57. Water temperaturee: Maximum, 66°F July 17, 23, 1951, Aug. 7, 8, 1955, July 

1956. 

REMARKS. Recorder stopped Jan. 20-23, Jan. 26 to Mar. 6, Apr. 10 to May 21; range for Jan. 20-

year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septemb

Day

2. ..................

4...................

5. ..................

6...................

7...................

8...................

9. ..................

10...................

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

12...................

13...................

14...................

15. ..................

16...................

17...................

18...................

19. ..................

20. ..................

21...................

22...................

24...................

25...................

26. ..................

27...................

28...................

29. ..................

30. ..................

31. ..................

October

max

51 

50 

SO 

49 

49

49 

48 

49 

50 

51

51 

49 

SO 

48 

49

49 

49 

49 

49 

48

49 

48 

45 

45 

45

48 

48 

47 

45 

45 

45

48

min

48 

47 

47 

47 

47

46 

46 

47 

48 

50

48 

47 

48 

47 

48

49 

49 

49 

48 

47 

48 

45 

45 

43 

43

45 

46 

45 

45 

45 

44

47

November

max

44 

44 

44 

45 

46

48 

48 

47 

47 

47

46 

48 

48 

45 

43

43 

44 

44 

41 

39

38 

38 

38 

38 

38

38 

38 

38 

38 

38

43

min

44 

43 

43 

44 

45

46 

47 

47 

47 

46

46 

46 

45 

43 

42

42 

43 

41 

39 

38

38 

38 

38 

37 

38

38 

38 

38 

38 

38

42

December

max

38 

38 

40 

40 

40

39 

37 

36 

38 

41

41 

41 

42 

42 

42

42 

42 

42 

42 

41

40 

40 

41 

41 

41

40 

40 

40 

40 

40 

40

40

min

38 

38 

38 

40 

39

37 

36 

36 

36 

37

41 

41 

41 

41 

41

42 

42 

42 

41 

40

40 

40 

40 

41 

40

40 

40 

40 

40 

40 

40

40

January

max

40 

40 

40 

39 

39

39 

39 

39 

39 

39

39 

39 

39 

40 

40

39 

36 

34 

35

35 

36

min

40 

40 

39 

39 

39

38 

38 

39 

39 

39

39 

39 

39 

39 

39

36 

32 

31 

33

35 

35

February

max min

March

max

39 

39 

41 

41

41 

41 

41 

41 

41

43 

43 

43 

44 

44

43 

42 

43 

45 

46

46 

45 

45 

45 

45 

47

43

min

38 

39 

39 

41

41 

41 

40 

41 

40

41 

41 

43 

43 

43

39 

39 

40 

43 

44

42 

43 

45 

45 

45 

45

42

April

max

47 

46 

46 

46 

47

47 

46 

47 

48

min

44 

45 

45 

46 

46

44 

44 

45 

45
WILLAMETTE RIVER BASIN 

MIDDLE FORK WILLAMETTE RIVER BELOW NORTH FORK, NEAR OAK

LOCATION . Temperature recorder at gaging station, half a mile below Whitehead Creek, 4 miles down

River, and 7 miles northwest of Oakridge. Lane County. 

DRAINAGE AREA. 924 square miles.

RECORDS AVAILABLE. Water temperatures: September 1950 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 66°F on several days in July; minimum, 35°F Jan

EXTREMES, 1950-57, Water temperatures: Maximum, 68°F July 25, 1956; minimum, 35°F on several day

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septem

/Recorder with temperature attachment, continuous ethyl alcohol-actuate

Day

1...................

2. ..................

3...................

4...................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

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

13. ..................

14. ..................

15...................

16...................

17. ...... ...........

19...................

20...................

21...................

22...................

23. ..................

24...................

25. ..................

26. ..................

27...................

29. ..................

30. ..................

31...................

October

max

56 

55 

55 

55 

55

55 

54 

55 

54

54

53 

52 

53 

51 

51

50 

51 

51 

50 

50

51 

49 

47 

46 

45

46 

46 

45 

45 

45 

45

51

min

53 

53 

52 

52 

52

51 

51 

53 

52 

53

52 

51 

51 

49 

49

49 

49 

50 

48 

48

49 

46 

46 

45 

45

45 

45 

45 

44 

44 

44

49

November

max

44 

45 

45 

45 

45

46 

46 

46 

45 

45

45 

44 

45 

44 

43

44 

43 

44 

43

40

--

min

44 

44 

44 

44 

44

45 

45 

44 

44 

44

44 

43 

44 

43 

42

42 

42 

43 

41

39

--

December

max

39 

39 

39 

40 

40

39 

38 

38 

39 

40

42 

43 

44 

44 

44

44 

44 

44 

44 

42

41 

41 

42 

42 

41

40 

40 

39 

40 

41 

42

41

min

39 

38 

38 

39, 

39

38 

38 

38 

38 

39

40 

42 ' 

43 

44 

43

43 

44 

44 

42 

41

41 

40 

40 

41 

40

39 

39 

39 

39 

40 

41

40

January

max

42

41 

41 

40 

40

39 

38 

38 

38 

38

39 

39 

40 

40 

40

40 

39 

37 

37 

39

40 

40 

40 

39 

38

37 

35 

35 

35 

35 

36

39

min

41 

40 

40 

39 

39

37 

37 

37 

38 

38

38 

39 

39 

39 

39 

39 

37 

37 

37 

37

38 

39 

39 

38 

37

35 

35 

35 

35 

35 

35

38

February

max

37 

38 

38 

39 

39

39 

39 

39 

40 

40

41 

41 

41 

42 

42

42 

41 

41 

41 

41

41 

42 

43 

43 

43

43 

45 

45

41

min

36 

37 

37 

38 

39

38 

38 

39 

39 

38

39 

39 

40 

41 

41

39 

39 

39 

39 

40

40 

40 

42 

43 

42

43 

43 

43

40

March

max

45 

45 

44 

44 

44

44 

45 

45 

45 

45

44 

43 

43 

43 

43 

45 

43 

45 

46 

45

43 

44 

44 

45 

46

46 

46 

45 

45 

44 

45

44

min

43 

44 

43 

44 

44

44 

44 

45 

44 

43

43 

42 

42 

42 

42

42 

40 

41 

43 

43

41 

41 

42 

43 

43

43 

42 

44 

44 

43 

43

43

April

max

46 

45 

46 

46 

46

44 

46 

47 

48 

47

48 

48 

46 

46 

48 

47 

48 

46 

47 

48

48 

50 

49 

48 

48

50 

52 

54 

54 

52

48

min

43 

43 

44 

44 

44

42 

42 

43 

44 

45

45 

45 

44 

45 

43

44 

44 

45 

45 

44

45 

44 

46 

45 

44

45 

46 

48 

49 

49

45

m
WILLAMETTE RIVER BASIN Continued 

MIDDLE FORK WILLAMETTE RIVER NEAR DEXTER, O

LOCATION. Temperature recorder at gaging station, three-quarters of a mile upstream from Lost C

DRAINAGE AREA. 1,001 square miles.

RECORDS AVAILABLE. Water temperatures: August_1955.t°_September 1957.^^ ^^ » .,«,«. ,, s

Temperature (°F) of water, water year October 1956 to Septe

/Recorder with temperature attachment, continuous ethyl alcohol-actua

Day

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. ..................

29. ..................

30. ..................

31. ..................

October

max

59 

61 

61 

60 

60

61 

60 

59 

60 

59

58 

58 

59 

59 

59 

58 

57 

57 

57 

57

57 

57 

56 

56 

56

56 

56 

56 

55 

55 

55

58

mln

58 

58 

58 

58 

58

57 

57 

58 

58 

58

58 

58 

57 

57 

57 

57 

57 

56 

56 

56

56 

56 

56 

56 

55

55 

56 

55 

55 

55 

55

57

November

max

55 

54 

53 

53 

53

52 

52 

52 

51 

51

51 

51 

51 

51 

50

50 

51 

50 

50 

50

49 

49 

49 

49 

48

48 

48 

47 

47 

47

50

min

54 

53 

53 

53 

52

52 

51 

51 

51 

51

51 

51 

50 

50 

50 

50 

50 

50 

50 

49

49 

49 

48 

48 

48

47 

47 

47 

46 

46

50

December

max

46 

46 

46 

46 

46

46 

45 

45 

45 

45

46 

44 

44 

44 

44 

44 

44 

44

44 

44 

44 

44 

44

44 

44 

43 

43 

43 

43

44

min

46 

46 

46 

45 

45

45 

45 

44 

44 

44

46 

44 

44 

44 

44 

44 

44 

44 

44

44 

44 

44 

44 

44

43 

43 

43 

43 

43 

43

44

January

max

43 

43 

43 

43 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

42 

42 

42 

42 

41 

41

41 

41 

41 

41 

40

40 

40 

40 

39 

39 

38

41

min

43 

43 

43 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

41 

41 

41

41 

41 

41 

40 

40

40 

39 

38 

38 

38 

38

41

February

max

39 

39 

39 

39 

39

39 

39 

39 

39 

40

40 

40 

40 

40 

41 

42 

42 

42 

40 

40

40 

40 

42 

42 

42

42 

43 

43

40

min

38 

38 

38 

38 

38

38 

38 

38 

38 

38

38 

38 

39 

39 

39 

39 

39 

39 

40 

40

40 

40 

40 

41 

41

42 

42 

42

39

March

max

43 

42 

43 

43 

44

44 

44 

44 

44 

44

45 

45 

45 

44 

44 

44 

44 

45 

45 

45

45 

44 

44 

45 

45

45 

46 

45 

45 

45 

46

44

min

42 

42 

42 

43 

43

44 

44 

44 

44 

44

44 

45 

44 

44 

44 

44 

44 

44 

44 

45

44 

44 

44 

44 

45

45 

45 

45 

45 

45 

45

44

April

max

46 

46 

46 

46 

46

46 

47 

47 

47 

46

46 

48 

47 

47 

48 

47 

47 

47 

48 

50

48 

52 

50 

50 

51

51 

52 

52 

52 

51

48

min

45 

45 

45 

46 

46

45 

45 

46 

46 

46

46 

46 

46 

47 

46 

46 

46 

46 

46 

46

46 

47 

47 

47 

47

47 

47 

48 

49 

49

46
WILLAMETTE RIVER BASIN Continued

FALL CREEK BELOW WINBERRY CREEK, NEAR FALL CREE

LOCATION. Temperature recorder at gaging station, 10 feet upstream from highway bridge, 1J mile

of town of Fall Creek, and 5 miles upstream from mouth, Lane County. 

DRAINAGE AREA. 186 square miles.

RECORDS AVAILABLE.--Water temperatures: August 1950 to September 1957.

EXTREMES, 1956-57.--Water temperatures: Maximum, 73°F July 20; minimum, 35°F Jan. 26 to Feb. 1.

EXTREMES, 1950-57. Water temperatures: Maximum, 77°F July 20, 1956; minimum, 34°F Jan. 30, 31, 

REMARKS.--Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septe

/Recorder with temperature attachment, continuous ethyl alcohol-actua

Day

3...................

4. ..................

5. ..................

6. ..................

7. ..................

6...................

9. ..................

10. ..................

12...................

13...................

14. ..................

15...................

16...................

17...................

18...................

19...................

20. ..................

21...................

22. ..................

23...................

24. ..................

25...................

26. ..................

27...................

28. ..................

29...................

30. ..................

31...................

Average .......

October

max

59 

58 

57 

56 

56

57 

56 

56 

56 

56

55 

55 

54 

53 

52

53 

53 

53 

51 

51

51 

50 

48 

46 

47

48 

48 

47 

47 

47 

47

52

min

56 

55 

54 

53 

54

53 

53 

54 

54 

55

54 

54 

53 

50 

50

52 

52 

51 

50 

49 

50 

47 

46 

45 

46

47 

47 

47 

46 

46 

46

51

November

max

46 

46 

46 

46 

46

48 

48 

48 

47 

47

47 

47 

47 

47 

45

46 

47 

47 

46 

43 

41 

41 

41 

41 

41

41 

41 

41 

40 

39

45

min

46 

46 

46 

46 

46

46 

48 

47 

46 

46

46 

46 

47 

45 

44

44 

46 

46 

43 

41 

41 

41 

41 

41 

40

40 

41 

40 

38 

38

44

December

max

39 

38 

39 

41 

41

40 

39 

38 

39 

43

45 

46 

46 

46 

46

46 

46 

46 

46 

44

43 

42 

43 

43 

43

42 

41 

41 

40 

42 

44

43

min

38 

37 

37 

39 

40

38 

38 

38 

38 

39

43 

45 

46 

46 

45

45 

45 

46 

44 

43 

42 

42 

42 

43 

42

41 

40 

40 

40 

40 

42

41

January

max

44 

43 

43 

42 

41

40 

40 

40 

39 

40

41 

41 

41 

41 

42

42 

40 

38 

38 

39 

40 

41 

41 

41 

40

38 

36 

35 

35 

35 

35

40

min

43 

43 

42 

41 

40

38 

39 

39 

39 

39

40 

41 

41 

41 

41

40 

38 

37 

38 

38

39 

40 

40 

40 

38

35 

35 

35 

35 

35 

35

39

February

max

36 

39 

40 

40 

41

41 

40 

41 

42 

42

42 

42 

43 

44 

44

45 

44 

44 

44 

44

44 

46 

47 

47 

47

47 

47 

47

43

min

35 

36 

39 

40 

40 

40 

40 

40 

41 

40

41 

41 

42 

43 

44

43 

43 

42 

43 

44

43 

43 

46 

47 

47

47 

47 

46

42

March

max

47 

46 

46 

45 

45

45 

46 

46 

46 

45

45 

44 

43 

44 

44

44 

'43 

45 

45 

45

43 

43 

44 

45 

45

45 

46 

47 

47 

47 

46

45

min

46 

46 

45 

45 

45

45 

45 

46 

45 

44

44 

43 

43 

43 

44

43 

42 

43 

43 

43 

42 

41 

42 

44 

44

43 

43 

46 

46 

46 

46

44

April

max

46 

47 

48 

48 

48

47 

47 

48 

49 

49

51 

50 

49 

49 

50

49 

51 

50 

49 

50

49 

52 

51 

50 

51

53 

56 

60 

61 

60

51

min

45 

45 

46 

48 

47

45 

44 

45 

46 

48

48 

49 

48 

48 

47

47 

47 

48 

47 

47

48 

48 

49 

49 

47

48 

49 

51 

54 

57

48
WILLAMETTE RIVER BASIN--Continued 

MIDDLE FORK WILLAMETTE RIVER AT JASPER, OREG.

LOCATION. Temperature recorder at gaging station, 25 feet downstream from highway bridge at Jasp

southeast of Springfield, Lane County. 

DRAINAGE AREA. 1,340 square miles.

RECORDS AVAILABLE. Water temperatures: October 1953 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 64°F July 10, 28; minimum, 37°F Jan. 25 to Feb. 

EXTREMES, 1953-57. Water temperatures: Maximum, 67°F on several days during July and August 195

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septem

/Recorder with temperature attachment, continuous ethyl alcohol-actuat

Day

1............ .......

3...................

4...................

5. ..................

6. ..................

7. ..................

9. ..................

10. ..................

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

12. ..................

13. ..................

14...................

15...................

16...................

17. ..................

20. ..................

21...................

22. ..................

23...................

24...................

25...................

26. ..................

27. ..................

28...................

29...................

30...................

31. ..................

Average .......

October

max

61 

61 

61 

61 

61

62 

61 

60 

60 

60

59 

59 

60 

59 

59

58 

57 

57 

56 

56

56 

54 

54 

52 

52 

50 

50 

51 

51 

51 

49

57

min

59 

58 

57 

57 

58 

57 

57 

59 

58 

59

58 

59 

58 

56 

57

57 

57 

55 

54 

55

54 

53 

52 

52 

50 

50 

50 

50 

51 

49 

49

55

November

max

49 

49 

49 

49 

50 

50 

50 

50 

50 

50

50 

50 

50 

49 

49

49 

49 

48 

48 

47

46 

46 

46 

46 

45 

45 

45 

44 

44 

44

48

min

49 

49 

49 

49 

49

50 

50 

50 

50 

50

50 

50 

49 

49 

49

49 

48 

48 

47 

46

46 

46 

46 

45 

45

45 

44 

44 

44 

44

48

December

max

44 

44 

43 

43 

43

43 

42 

42 

42 

42

44 

45 

45 

45 

44

44 

44 

44 

44 

44

43 

43 

43 

43 

43

42 

41 

41 

41 

41 

42

43

min

44 

43 

42 

43 

42 

41 

41 

41 

42 

41

42 

44 

45 

44 

44

44 

44 

44 

44 

43

43 

43 

43 

43 

42 

41 

41 

41 

41 

41 

41

43

January

max

42 

42 

41 

41 

41

40 

40 

40 

40 

40

41 

41 

41 

41 

41

41 

40 

39 

39 

39

39 

40 

40 

40 

39

38 

37 

37 

37 

37 

37

40

min

42 

41 

41 

41 

40

39 

40 

40 

40 

40

40 

40 

41 

41 

41

40 

38 

38 

38 

39

39 

39 

40 

39 

37 

37 

37 

37 

37 

37 

37

39

February

max

37 

38 

40 

40 

42 

41 

40 

41 

42 

41

42 

42 

43 

43 

44

43 

43 

43 

43 

44

43 

44 

45 

46 

46 

47 

47 

47

43

min

37 

37 

38 

40 

40

39 

39 

40 

41 

40

41 

40 

41 

42 

43

42 

41 

41 

43 

43

42 

42 

44 

45 

45

46 

47 

46

42

March

max

46 

46 

45 

45 

45

45 

46 

46 

46 

46

46 

46 

45 

45 

45

45 

45 

46 

46 

46

45 

45 

45 

45 

46

47 

47 

46 

46 

46 

46

46

min

45 

45 

45 

45 

45

45 

45 

46 

46 

45

46 

45 

45 

45 

45

45 

44 

44 

45 

45

44 

44 

44 

45 

45

45 

45 

45 

46 

45 

45

45

April

max

46 

46

47 

47 

47

46 

48 

48 

48 

47

48 

49 

48 

48 

49

48 

49 

48 

49 

52

50 

55 

52 

51 

52 

54 

56 

57 

57 

55

50

min

45 

45 

46 

46 

46

45 

43 

44 

46 

47

46 

47 

47 

47 

46

46 

47 

47 

46 

47

48 

48 

49 

49 

47 

48 

49 

51 

52 

53

47
WILLAMETTE RIVER BASIN Continued 

SOUTH FORK McKENZIE RIVER NEAR RAINBOW, OR

LOCATION. Temperature recorder at gaging station, 0.2 mile upstream from Cougar Creek, 2 miles 

Blue River, Lane County. 

DRAINAGE AREA. 211 square miles.

RECORDS AVAILABLE. Water temperatures: July 1955 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 63°F July 10, 11; minimum, 36°F Dec. 7, 8, Jan

EXTREMES, 1955-57. Water temperatures: Maximum, 63°F July 20, 21, 23-25, 1956, July 10, 11, 19

Mar. 23, 1956. 

REMARKS. Recorder stopped Jan. 26 to Feb. 1; range 36°F to 39°F during this period. Records of 

given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septemb

/Recorder with temperature attachment, continuous ethyl alcohol-actuate

Day

2. ..................

4...................

5. ..................

6. ..................

7.... ...............

8...................

9. ..................

10. ..................

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

12...................

13. ..................

14...................

16. ..................

17...................

18. ..................

20. ..................

23...................

24...................

25...................

26. ..................

27...................

28...................

29...................

30...................

31...................

October

max

51 

50 

50 

50 

50

50 

49 

50 

50 

50

49 

48 

49 

47 

47

47 

46 

46 

46 

43

46 

45 

44 

43 

43 

44 

44 

43 

43 

43 

43

47

min

47 

47 

47 

47 

47

46 

47 

48 

48 

49

48 

48 

47 

45 

45

46 

46 

46 

45 

44

45 

43 

43 

42 

42 

43 

43 

43 

43 

43 

42

45

November

max

42 

43 

43 

42 

43

44 

44 

43 

43 

43

43 

43 

43 

42 

41

43 

43 

43 

41 

39

40 

40 

40 

40 

40 

40 

40 

40 

40 

40

42

min

42 

42 

42 

42 

42

43 

43 

43 

42 

42

42 

42 

42 

41 

41

41 

43 

41 

39 

39

39 

39 

40 

40 

40 

40 

40 

40 

40 

39

41

December

max

39 

39 

39 

39 

38

38 

37 

38 

38 

40

41 

42 

42 

42 

42

42 

42 

43 

43 

42

41 

40 

40 

40 

40 

40 

40 

40 

40 

41 

41

40

min

38 

39 

39 

38 

38

37 

36 

36 

38 

38

40 

41 

42 

42 

42

42 

42 

42 

42 

41

40 

40 

40 

40 

40 

40 

40 

40 

40 

40 

41

40

January

max

41 

40 

40 

39 

38

37 

38 

39 

39 

39

40 

40 

40 

40 

41

41 

39 

39 

39 

40

40 

41 

41 

40 

39

40

min

40 

40 

39 

38 

37

37 

37 

37 

39 

39

39 

40 

40 

40 

40

39 

39 

39 

38 

39

40 

40 

40 

39 

37 

36

39

February

max

37 

38 

38 

39

39 

39 

39 

40 

40

40 

40 

40 

41 

41

41 

41 

41 

41 

41

41 

41 

42 

42 

42 

42 

43 

43

40

min

36 

36 

36 

38 

38

38 

39 

39 

39 

38

39 

39 

39 

40 

40

40 

40 

40 

40 

41

41 

41 

41 

42 

42 

42 

42 

42

39

March

max

43 

43 

43 

43 

43

43 

43 

44 

44 

43

43 

42 

42 

42 

42

43 

42 

45 

45 

44

42 

42 

43 

44 

45 

44 

44 

45 

45 

44 

44

43

min

43 

43 

43 

43 

43

43 

43 

43 

43 

43

42 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

41 

42 

43 

43 

42 

42 

44 

44 

44 

43

43

April

max

45 

44 

45 

45 

45

44 

44 

46 

46 

46

47 

46 

46 

45 

47

45 

46 

45 

45 

46

46 

48 

47 

46 

46 

48 

50 

52 

51 

49

46

min

43 

43 

44 

45 

44

42 

42 

43 

44

45

45 

45 

44 

45 

44

43 

44 

44 

44 

43

44 

44 

45 

44 

44 

44 

44 

46 

46 

47

44

m
WILLAMETTE RIVER BASIN Continued 

NORTH SANTIAM RIVER BELOW BOULDER CREEK, NEAR DETR

LOCATION. Temperature recorder at gaging station, half a mile downstream from Boulder Creek and 

DRAINAGE AREA. 216 square miles. 

RECORDS AVAILABLE.--Water temperatures: April 1951 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 62°F July 20, 21; minimum, 34°F Jan. 17-19, 25

EXTREMES, 1951-57. Water temperatures: Maximum, 62°F July 20, 21, 1957; minimum, freezing poin

REMARKS. Recorder not operating properly, Apr. 15 to May 4; range not determined for this perio

September 1957 given in WSP 1518.

_ Temperature (°F) of water, water year October 1956 to Sept

^Recorder with temperature attachment, continuous ethyl alcohol-act

Day

2. ..................

3...................

4. ..................

5...................

6...................

7...................

8. ..................

9. ..................

10. ..................

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

12...................

13. ..................

14...................

15...................

16...................

18...................

19. ..................

20. ..................

21...................

22. ..................

23

24. ..................

26. ..................

27. ..................

28. ..................

29

30. ..................

31...................

October

max

49 

49 

48 

48 

49

48 

48 

49 

49 

49

49 

48 

47 

46 

46

47 

47 

47 

46 

47

45 

44 

43 

42 

42

42 

41 

41 

41 

41 

40

46

min

46 

47 

46 

46 

47

46 

46 

48 

48 

49 

48 

47 

46 

43 

45

46 

47 

46 

44 

44

44 

43 

42 

41 

41

41 

41 

41 

41 

40 

40

45

November

max

41 

42 

41 

41 

42

43 

43 

42 

41 

41 

41 

42 

42 

41 

40

41 

42 

41

39 

38

38 

38 

39 

39 

39

39 

39 

39 

39 

39

40

min

40 

41 

41 

41 

41

42 

42 

41 

41 

41 

41 

40 

41 

40 

40

40 

41 

39 

38 

38

38 

38 

38 

39 

39

39 

39 

39 

39 

38

40

December

max

38 

38 

41 

41 

38

38 

37 

38 

38 

39

39 

40 

40 

41 

41

41 

41 

41 

41 

40

39 

39 

40 

40 

39

38 

38 

38 

38 

39 

39

39

min

38 

38 

38 

38 

38

37 

37 

37 

38 

38

39 

39 

40 

40 

41

41 

41 

41 

40 

39

39 

38 

39 

39 

38

38 

38 

38 

38 

38 

39

39

January

max

39 

39 

39 

38 

38

37 

37 

37 

37 

37

38 

38 

38 

38 

38

37 

35 

34 

36 

37

37 

37 

37 

37 

35

34 

34 

34 

34 

34 

36

37

min

39 

39 

38 

38 

37

36 

36 

37 

37 

37

37 

38 

38 

38 

37

35 

34 

34 

34 

36

37 

37 

37 

35 

34

34 

34 

34 

34 

34 

34

36

February

max

36 

36 

36 

37 

38 

38 

38 

38 

39 

39 

39 

39 

39 

40 

40

39 

39 

38 

38 

38

37 

36 

37 

37 

37

37 

39 

39

38

min

35 

36 

36 

36 

36 

38 

37 

38 

38 

37

37 

38 

38 

39 

38

38 

37 

37 

37 

37

36 

34 

36 

37 

37

37 

37 

38

37

March

max

39 

39 

39 

39 

39 

39 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

41 

41 

40

38 

39 

40 

41 

42

41 

41 

42 

41 

41 

41

40

min

38 

39 

39 

39 

39

39 

39 

39 

39 

38

39 

38 

38 

38 

38

38 

38 

39 

38 

38

38 

38 

38 

39 

40

38 

38 

40 

41 

40 

40

39

April

max

42 

41 

41 

41

41

40 

43 

43 

44 

42

44 

43 

43 

43

min

40 

39 

40 

41 

40

39 

40 

39 

40 

41

42 

42 

41 

41

--
WILLAMETTE RIVER BASIN Continued 

BREITENBUSH RIVER ABOVE CANYON CREEK, NEAR DETRO

LOCATION. Temperature recorder at gaging station, 600 feet upstream from Canyon Creek and 1J mi

DRAINAGE AREA. 106 square miles.

RECORDS AVAILABLE. Water temperatures: December 1950 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 57°F July 21; minimum, 34'F Jan. 16-19, 26-31.

EXTREMES, 1950-57. Water temperatures: Maximum, 58°F July 17, 1951, Aug. 4, 13, 14, 1952, July 

Feb. 1, 2, 17, 1956. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septe

/Recorder with temperature attachment, continuous, ethyl alcohol-actu

Day

2...................

4...................

5...................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

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

12...................

13. ..................

14. ..................

16...................

17...................

18. ..................

19...................

20...................

21...................

22

23...................

24...................

25...................

26...................

27...................

28...................

29...................

30. ..................

31. ..................

Average .......

October

max

49 

48 

48 

47 

48

47 

48 

49 

49 

49

49 

47 

47 

47 

46

46 

46 

47 

47 

46

45 

45 

45 

44 

45

45 

44 

44 

44 

43 

43

46

min

46 

47 

47 

46 

47

46 

46 

47 

48 

49

47 

47 

47 

46 

46

46 

46 

45 

46 

45

45 

45 

43 

42 

42

44 

44 

44 

43 

43 

42

45

November

max

42 

41 

41 

41 

41

41 

41 

41 

41 

41

41 

41 

41 

41 

41

41 

41 

40 

39 

38

38 

38 

38 

38 

38

38 

38 

38 

37 

37

40

mln

41 

41 

41 

41 

41

41 

41 

41 

41 

41

41 

41 

41 

41 

41

41 

40 

39 

38 

38

38 

38 

38 

38 

38

38 

38 

37 

37 

37

40

December

max

37 

38 

38 

38 

37

37 

37 

38 

38 

38

39 

41 

41 

41 

41

41 

41 

42 

42 

41

41 

40 

39 

39 

39 

39 

39 

39 

39 

39 

39

39

min

37 

37 

38 

37 

37

36 

37 

37 

37 

37

38 

39 

41 

41 

41

41 

41 

41 

41 

41

40 

39 

39 

39 

39

39 

39 

39 

39 

39 

39

39

January

max

39 

39 

39 

39 

39 

37 

37 

37 

37 

37

37 

37 

37 

37 

37

36 

36 

36 

36 

37

37 

37 

37 

37 

36

36 

35 

34 

34 

34 

35

37

mln

39 

39 

39 

39 

37

37 

37 

37 

37 

37

37 

37 

37 

37 

36

34 

34 

34 

34 

36

37 

37 

37 

36 

36 

34 

34 

34 

34 

34 

34

36

February

max

36 

37 

37 

37 

37

38 

38 

38 

38 

38

38 

38 

38 

39 

39

39 

39 

39 

39 

39

39 

37 

38 

38 

38 

39 

39 

40

38

min

35 

35 

37 

37 

37

37 

38 

38 

38 

38

38 

38 

38 

38 

39

39 

39 

39 

39 

39

37 

35 

36 

38 

38

38 

39 

39

38

March

max

40 

40 

40 

40 

40

40 

40 

40 

40 

40

41 

41 

41 

41 

41

41 

41 

42 

42 

41

41 

41 

42 

42 

43 

42 

42 

43 

43 

43 

43

41

min

40 

40 

40 

40 

40

40 

40 

40 

40 

40

40 

41 

41 

41 

41 

41 

41 

41 

41 

41

41 

41 

41 

41 

42

41 

41 

42 

43 

43 

42

41

April

max

43 

41 

41 

42 

42

41 

43 

43 

44 

43

44 

43 

43 

43 

42

43 

44 

43 

43 

43

44 

46 

44 

43 

42

45 

46 

47 

47 

45

43

min

41 

40 

41 

41 

41

40 

41 

40 

41 

42

42 

43 

42 

42 

41 

41 

42 

42 

42 

41

43 

43 

43 

42 

41

40 

42 

43 

43 

43

42
WILLAMETTE RIVER BASIN--Continued 

NORTH SANTIAM RIVER AT NIAGARA, OREG.

LOCATION. Temperature recorder at gaging station, 0.8 mile downstream from Big Cliff Dam, Linn 

DRAINAGE AREA. 453 square miles.

RECORDS AVAILABLE. Water temperatures: January 1953 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 54'F Oct. 10-27, Sept. 23-27, 30; minimum, 35"

EXTREMES, 1953-57. Water temperatures: Maximum, 54°F Oct. 8-18, 20, 1954, Oct. 10-27, 1956, Se

Feb. 16, 1957. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septe

/Recorder with temperature attachment, continuous ethyl alcohol-actu

Day

2. ..................

4...................

5. ..................

6...................

7...................

8...................

9. ..................

10. ..................

13...................

14...................

15...................

17...................

18...................

19. ..................

20. ..................

21...................

22...................

23...................

24...................

25...................

26. ..................

27...................

29. ..................

30. ..................

31...................

October

max

53 

53 

53 

53 

53 

53 

53 

53 

53 

54

54 

54 

54 

54 

54

54 

54 

54 

54 

54

54 

54 

54 

54 

54

54 

54 

53 

53 

53 

52

54

min

53 

53 

53 

53 

53 

53 

53 

53 

53 

53

54 

54 

54 

54 

54

54 

54 

54 

54 

54

54 

54 

54 

54 

52

54 

53 

53 

53 

52 

52

53

November

max

52 

52 

52 

52 

52 

51 

52 

52 

51 

51

51 

51 

50 

50 

50

50 

50 

49 

49 

49

49 

49 

49 

49 

49 

48 

47 

47 

47 

47

50

min

52 

52 

52 

52 

51 

51 

51 

51 

51 

51

50 

50 

50 

50 

50

50 

49 

49 

48 

49

49 

48 

48 

48 

48

47 

47 

47 

47 

46

49

December

max

46 

46 

46 

46 

46 

45 

44 

44 

44 

44

44 

44 

44 

44 

43

42 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

41 

41

43

min

46 

46 

46 

46 

45 

44 

43 

43 

44 

44

44 

44 

43 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

42 

42 

42 

42 

41 

41 

41

43

January

max

41 

41 

41 

41 

40 

40 

40 

40 

39 

39

39 

39 

39 

39 

39

39 

39 

38 

38 

38

38. 

38 

38 

38 

38

37 

37 

36 

36 

36 

35

38

min

41 

41 

41 

40 

40 

39 

39 

39 

39 

39

39 

39 

39 

39 

39

38 

38 

38 

38 

38

38 

38 

38 

38 

37 

36 

36 

36 

36 

35 

35

38

February

max

35 

35 

35 

35 

35 

35 

35 

35 

35 

35

35 

35 

35 

35 

35

36 

36 

37 

36 

36

36 

36 

36 

38 

39

40 

40 

40

36

min

35 

35 

35 

35 

35 

35 

35 

35 

35 

35

35 

35 

35 

35 

35

35 

36 

36 

36 

36

36 

36 

36 

36 

38

39 

39 

40

36

March

max

40 

39 

38 

38 

38 

38 

38 

39 

39 

39

38 

38 

38 

38 

38

39 

39 

39 

39 

39

39 

39 

39 

39 

39 

39 

39 

40 

40 

40 

40

39

min

39 

38 

38 

38 

38 

38 

38 

38 

39 

38

38 

38 

38 

38 

38

38 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

39 

40 

40 

40

39

April

max

40 

40 

40 

40 

40 

40 

40 

41 

41 

41

40 

40 

40 

40 

40

41 

41 

41 

41 

40

41 

41 

41 

41 

42

42 

43 

44 

44 

43

41

min

40 

40 

40 

40 

40 

40 

40 

40 

41 

40

40 

40 

40 

40 

40

40 

41 

41 

40 

40

40 

41 

41 

41 

41

42 

42 

43 

43 

43

41
WILLAMETTE RIVER BASIN--Continued 

MIDDLE SANTIAM RIVER AT MOUTH, NEAR FOSTER, 

LOCATION. Temperature recorder at gaging station, on right bank half a mile upstream from mouth 

DRAINAGE AREA. 287 square miles.

RECORDS AVAILABLE. Water temperatures: September 1953 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 70°F Sept. 7; minimum, 35°F Jan. 26-31.

EXTREMES, 1953-57. Water temperatures: Maximum, 74"F Aug. 21-23, 1956; minimum, 34°F Feb. 1, 2

REMARKS. Recorder pen not set, Aug. 1-6; range not determined for this period. Records of disc

given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septem

/Recorder with temperature attachment, continuous ethyl alcohol-actua

Day

1...................

3. ..................

4...................

5. ..................

6...................

7. ..................

8. ..................

9. ..................

10...................

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

13. ..................

14. ..................

16...................

17...................

18. ..................

19. ..................

20. ..................

21...................

22. ..................

23. ..................

24. ..................

25...................

26...................

27. ..................

28. ..................

29. ..................

31...................

October

max

60 

59 

59 

54 

57

58 

57 

56 

57 

57

56 

55 

54 

53 

54

54 

54 

53 

52 

51

50 

49 

48 

46 

46 

46 

46 

45 

44 

44 

44

52

min

55 

54 

54 

53 

53 

52 

52 

53 

54 

55

55 

54 

52 

51 

51

51 

53 

52 

51 

50

49 

48 

46 

45 

45 

45 

44 

44 

44 

44 

43

50

November

max

44 

44 

44 

44 

44

46 

46 

46 

45 

45

45 

45 

45 

45 

44

43 

45 

45 

43 

41

41 

41 

41 

41 

41 

41 

41 

41 

40 

40

43

min

43 

43 

44 

44 

44

46 

46 

45 

45 

45

45 

44 

44 

44 

43

43 

43 

43 

41 

41

4 V 

41 

41 

41 

41 

41 

41 

40 

40 

40

43

December

max | min

40 

39 

41 

42 

41 

40 

39 

38 

39 

42

44 

44 

45 

45 

45

45 

45 

45 

45 

44

43 

42 

43 

43 

42 

41 

41 

41 

41 

42 

43

42

39 

39 

39 

41 

40

39 

38 

38 

38 

39

42

44 

44 

45 

44

44 

45 

45 

43 

43

42 

42 

42 

42 

41 

41 

41 

41 

41 

41 

42

41

January

max

43 

42 

42 

41 

41

39 

39 

39 

39 

39

40 

40 

40 

40 

40

40 

38 

38 

38 

38

39 

39 

39 

39 

38 

36 

35 

35 

35 

35 

36

39

min

42 

42 

41 

41 

39 

39 

39 

38 

38 

39

39 

40 

40 

40 

40

38 

37 

37 

38 

38

38 

39 

39 

38 

36 

35 

35 

35 

35 

35 

35

38

February

max

38 

39 

39 

39 

39

40 

40 

40 

40 

41

41 

41 

42 

42 

42

42 

42 

42 

41 

41

41 

41 

42 

42 

43 

43 

44 

44

41

min

36 

38 

39 

39 

39

39 

39 

40 

40 

40

41 

41 

41 

42 

41

40 

40 

40 

41 

41

41 

41 

41 

42 

42 

43 

43 

43

40

March

max

44 

44 

44 

43 

43

43 

44 

44 

44 

43

43 

43 

42 

42 

43

43 

43 

44 

44 

44

43 

42 

43 

43 

45 

44 

44 

45 

45 

44 

43

44

min

43 

44 

43 

43 

43 

43 

43 

44 

43 

43

43 

42 

42 

42 

42

42 

42 

43 

42 

43

42 

41 

41 

43 

43 

42 

42 

44 

44 

43 

43

43

April

max

44 

44 

45 

45 

45 

44 

45 

46 

47 

47

48 

48 

46 

46 

45

45 

47 

47 

46 

47

47 

49 

49 

47 

47 

49 

52 

54 

54 

53

47

min

43 

43 

44 

45 

44

42 

42 

43 

44 

46

45 

46 

45 

45 

44

44 

45 

45 

45 

44

45 

46 

47 

46 

45 

46 

47 

50 

51 

51

45
WILLAMETTE RIVER BASIN Continued 

WILLAMETTE RIVER AT SALEM, OREG.

LOCATION. At bridge on Oregon Highway 22, 300 feet downstream from gaging station at Salem, Mario

DRAINAGE AREA. 7,280 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: August to December 1910, August 1911 to August 1912, Febru

Water temperatures: February 1951 to September 1957. 

EXTREMES, 1956-57. Dissolved solids: Maximum, 54 ppm July 1-31; minimum, 44 ppm Apr. 1-14.

ITrt<n^nAr?ir?i . Unv* vniim OO -r\-r\m AlltT 1 _11 m "i fH mi im 14 rtrtTH TTfH 1 3 9ft . Hardness: Maximum, 22 ppm Aug. 1-31; minimum, 14 ppm Feb. 13-28.

Specific conductance: Maximum daily, 73 micromhos July 27; minimum daily, 37 micromhos Feb. 16

Water temperatures: Maximum, 73°F July 13, 25, Aug. 2, 18; minimum, 33°F Feb. 8. 

EXTREMES, 1951-57. Dissolved solids: Maximum, 69 ppm Nov. 1-30, 1952; minimum, 38 ppm Nov. 22-30

Hardness: Maximum, 28 ppm Sept. 16-20, 24-29, 1951, Aug. 11-20, Oct. 11-31, 1952, Aug. 1-10, 1

May 21-31, 1956, Feb. 13-28, 1957.

Chemical analyses, In parts per million, water year October 1956 

Date of collection

Oct. 1-18, 25, 1956 

Oct. 19-24, 26-31 .

Jan. 1-15, 1957 ...

Apr. 15-30. ......

June 1-30... .....

Aug. 1-31........

Sept. 1-30 .......

Weighted average

Mean 

discharge 

(cfs)

6,989 

20,730 

24,190 

44, 270 

20,090 

19,480

44, 270 

65,510 

38,700 

20, 210 

ift 9in

10, 620 

6,052 

5,850 

6,991

22,970

Silica 

(Si02)

18 

17

13

15

--

Iron 

(Fe)

0.05 

.05

.05

.05

-

Calcium 

(Ca)

5.2 

5.2

4.6

5.6

-

Magnesium 

(Mg)

1.6 

1.4

1.3

1.6

-

Sodium 

(Na)

4.5 

3.5 

3.6 

3. 8 

3.5

3.0 

2 8 

3.3

3 8 

4! 4 

4.7 

4.4

3.4

Potassium 

(K)

1.1 

.9

.7

1.1

-

Bicarbonate 

(HCO,)

30 

25 

26 

25 

26 

25

24 

20 

23 

23 

25 

25

30 

30 

30 

28

25

Sulfate 

(SO,)

2.3 

3.0

2.2 

3.3

-

Chloride 

(Cl)

2.5 

2.0 

2.0 

2.5 

3.5 

2.5

2.5 

1.5 

2.0 

2.0 

2.0 

2.0

2.2 

2.8 

3.0

2 2

Fluoride 

<F)

0.1 

.2

.3 

.1

-

Nitrate 

(NO,)

0.9 

1.0

.7 

1.3

-

Boron 

(B)

0.02 

.04

.10 

.05

"
476 PACIFIC SLOPE BASINS IN OREGON AND LOWER COLUMBIA RIVER BASIN

WILLAMETTE RIVER BASIN Continued 

WILLAMETTE RIVER AT SALEM, OREG.--Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 8 p. mj

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

2728'

29

30

31

Average

Oct.

54

52

51

51

-

49

48

49

--

47

48

46

45

44

45

48

45

45

43

45

48

46

45

43

48

44

44

45

47

Nov.

44

43

44

44

45

45

46

49

47

48

47

47

48

46

45

46

45

46

45

48

44

43

42

42

Dec.

43

44

45

45

46

45

45

--

43

43

45

45

44

44

43

44

44

46

43

42

40

Jan.

42

43

44

43

44

_

44

41

44

45

44

45

43

44

_

43

44

44

45

45

45

44

44

45

45

43

43

44

45

44

44

Feb.

44

43

43

43

41

39

35

33

35

38

38

40

44

43

43

43

43

44

44

45

_

_

_

45

45

Mar.

46

46

45

44

47

46

47

48

48

48

49

_

47

46

47

41

47

48

48

48

47

46

47

47

47

48

51

50

51

48

40

47

Apr.

48

47

48

49

49

48

49

50

49

48

47

47

48

49

47

47

49

48

48

50

50

49

51

_

50

50

53

55

54

49

May

54

53

52

51

52

49

48

50

__

--

51

52

51

53

52

52

52

53

54

56

55

55

51

56

54

54

55

53

56

54

53

June

..

54

57

54

55

58

56

56

57

58

61

60

64

_

62

61

63

62

63

64

64

_

64

64

66

67

65

66

65

66

61

July

66

67

67

68

66

63

69

70

69

68

70

73

72

69

70

69

67

69

69

70

71

70

71

73

_

._

69

72

72

69

69

Aug.

71

73

70

68

69

70

70

71

69

71

68

71

72

71

69

72

_

73

72

71

69

70

68

70

69

68

69

68

66

70

Sept.

..

64

64

65

66

69

69

67

64

64

65

65

64

63

63

62

60

59

58

59

60

59

58

60

61

59

58

59

58

62
LEWIS RIVER BASIN 

EAST FORK LEWIS RIVER NEAR HEISSON, WASH.

LOCATION. Temperature recorder, 60 feet downstream from Basket Creek, 1| miles northeast of Heis

DRAINAGE AREA. 125 square miles.

RECORDS AVAILABLE. Water temperatures: June 1950 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 67T July 20, 21, Sept. 3; minimum, freezing po

EXTREMES, 1950-57. Water temperatures: Maximum, 74°F Aug. 4, 1952; minimum, freezing point Jan. 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°f) of water, water year October 1956 to Septem

Day

1.... ...............

3...................

4. ..................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

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

12...................

13. ..................

14...................

15...................

16...................

17...................

18. ..................

19. ..................

20. ..................

21...................

22...................

23. ..................

24...................

26...................

27. ..................

29. ..................

31...................

October

max

53 

51 

52 

50 

50

51 

53 

52 

53 

54

53 

51 

50 

48 

49

51 

51 

51 

49 

50

50 

49 

47 

46 

47

47 

47 

46 

45 

45 

45

50

min

51 

51 

50 

50 

48

48 

49 

51 

52 

53

51 

50 

48 

48 

48

49 

51 

49 

49 

49

49 

46 

46 

46 

46

47 

46 

45 

45 

45 

45

48

November

max

45 

45 

46 

46 

46

47 

47 

46 

45 

45

46 

46 

46 

44 

43

45 

45 

44 

42 

39

40 

40 

41 

. 41 

41

40 

39 

38 

38 

38

43

min

44 

44 

45 

45 

45

46 

46 

45 

44 

44

45 

46 

44 

43 

43

43 

44 

42 

39 

39

39 

39 

40 

41 

40 

39 

38 

38 

38 

36

42

December

max

36 

38 

40 

40 

37

36 

33 

36 

39 

41

42 

43 

43 

43 

43

43 

43 

43 

43 

42

42 

41 

42 

42 

41

40 

40 

39 

39 

40 

41

40

min

35 

35 

38 

37 

36

33 

33 

33 

36 

39

41 

42 

43 

43 

43

43 

42 

43 

41 

42

41 

41 

41 

41 

40

39 

39 

38 

38 

39 

40

39

January

max

41 

40 

40 

40 

39

36 

37 

37 

38 

39

40 

40 

40 

39 

39

37 

35 

34 

35 

35

37 

37 

37 

36 

32

32 

32 

32 

32 

32 

32

37

min

40 

40 

40 

39 

36

35 

36 

37 

37 

38

39 

40 

39 

39 

37

35 

34 

34 

34 

35

35 

37 

36 

32 

32

32 

32 

32 

32 

32 

32

36

February

max

34 

35 

37 

37 

38

39 

39 

39 

39 

39

40 

40 

41 

41 

41

42 

41 

41 

41 

41

37 

36 

41 

41 

42 

42 

43 

43

40

min

32 

34 

35 

37 

37

38 

37 

39 

39 

38

39 

38 

39 

40 

40-

40 

40 

39 

40 

37

35 

35 

36 

41 

41

42 

42 

41

38

March

max

43 

43 

43 

43 

43

43 

43 

43 

43 

43

43 

43 

42 

42 

43

43 

44 

45 

46 

46

42 

43 

45 

45 

45

45 

46 

46 

46 

45 

46

44

min

43 

42 

42 

42 

42

42 

42 

43 

43 

42

43 

42 

42 

42 

42

41 

41 

41 

42 

42

42

42 

42 

44 

43 

41 

42 

45 

45 

44 

45

42

April

max

46 

46 

46 

46 

46

45 

48 

49 

49 

49

48 

48 

49 

49 

46

49 

51 

49 

46 

47

47 

48 

48 

47 

47 

50 

53 

55 

57 

57

49

min

45 

45 

45 

46 

45

43 

43 

43 

44 

47

46 

47 

46 

45 

44

44 

47 

45 

45 

43

45 

46 

47 

45 

45 

45 

47 

49 

51 

52

46
KALAMA RIVER BASIN 

KALAMA RIVER BELOW ITALIAN CREEK, NEAR KALAMA, W

LOCATION. Temperature recorder at gaging station, 2i miles northeast of Kalama, Cowlitz County, 3 

from Italian Creek. 

DRAINAGE AREA. 201 square miles.

RECORDS AVAILABLE. Water temperatures: October 1954 to September 1957. 

EXTREMES 1956-57. Water temperatures: Maximum, 63°F July 5j minimum, 33°F Jan. 26-31.

EXTREMES 1954-57. Water temperatures: Maximum, 63°F July 16, 17, 20, 1956, July 5, 1957; minimu

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septemb

Day

2. ..................

3...................

4. ..................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10...................

13. ..................

14. ..................

16...................

17. ..................

18...................

20. ..................

21. ..................

22. ..................

23...................

24...................

25. ..................

26...................

27...................

28...................

29. ..................

30. ..................

31...................

October

max

52 

51 

50 

50 

49 

48 

49 

49 

50 

51

51 

50 

48 

48 

48

48 

48 

48 

47 

47

47 

46 

45 

44 

44

44 

44 

44 

43 

43 

43

47

mln

51 

49 

49 

48 

48

47 

47 

48 

49 

50

50 

48 

48 

48 

48

47 

48 

47 

46 

46

46 

45 

44 

43 

43 

44 

44 

43 

43 

43 

43

47

November

max

43 

43 

43 

43 

44

44 

44 

44 

43 

43

45 

45 

45 

43 

42

43 

43 

43 

41 

39 

39 

39 

40 

40 

40

40 

40 

39 

39 

39

42

mln

42 

42 

43 

43 

43

43 

44 

43 

43 

43

44 

45 

43 

42 

42

42 

43 

42 

39 

39

39 

39 

39 

40 

40 

40 

39 

38 

38 

38

41

December

max

39 

40 

42 

42 

40

38 

36 

37 

39 

41

42 

42 

43 

43 

43

43 

43 

43 

43 

43

43 

42 

42 

42 

42

41 

41 

41 

40 

41 

42

41

min

38 

38 

40 

40 

38

36 

36 

36 

37 

39

41 

42 

42 

42 

42

43 

43 

43 

43 

43

42 

42 

42 

42 

41

41 

41 

40 

40 

40 

41

40

January

max

42 

42 

41 

41 

41

39 

39 

39 

39 

40

40 

40 

40 

40 

40

39 

37 

36 

37 

38

38 

38 

38 

38 

36 

34 

33 

33 

33 

33 

34

38

mln

42 

41 

41 

41 

39

39 

39 

39 

39 

39

40 

40 

40 

40 

39

37 

36 

36 

36 

37 

38 

38 

38 

36 

34

33 

33 

33 

33 

33 

33

37

February

max

36 

36 

37 

38 

39

39 

39 

40 

40 

40

40 

40 

40 

40 

40

40 

39 

39 

40 

40 

38 

38 

40 

40 

41 

41 

42 

42

39

min

34 

36 

36 

37 

38

39 

39 

39 

39 

39

39 

39 

39 

40 

40

39 

39 

39 

39 

38

37 

37 

38 

39 

40 

41 

41 

41

39

March

max

43 

43 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

41 

42

42 

42 

42 

43 

43

43 

43 

44 

44 

44

44 

44 

45 

45 

44 

44

43

mln

41 

42 

42 

41 

42

42 

42 

42 

42

42

42 

42 

41 

41 

41

41 

41 

42 

42 

42 

42 

42 

43 

44 

43 

42 

42 

44 

44 

44 

44

42

April

max

44 

44 

44 

44 

44

44 

44 

44 

46 

46

46 

46 

46 

46 

45

46 

46 

46 

45 

45

45 

47 

46 

45 

45 

47 

48 

50 

50 

49

46

mln

43 

44 

44 

44 

44

42 

43 

43 

44 

46

46 

46 

45 

45 

44

44 

46 

45 

44 

43 

44 

45 

45 

45 

44 

44 

46 

47 

48 

48

45

m
COWLITZ RIVER BASIN 

CISPUS RIVER NEAR RANDLE, WASH.

LOCATION. Temperature recorder at gaging station, 60 feet upstream from bridge to Tower Rock r

and 8 miles southeast of Handle, Lewis County. 

DRAINAGE AREA. 321 square miles.

RECORDS AVAILABLE. Water temperatures: May 1950 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 60°F July 21, 29; minimum, 33°F on several da

EXTREMES, 1950-57.--Water temperatures: Maximum, 61°F Aug. 4, 9, 10, 15, 1952; minimum, freezi

REMARKS.--Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature ("F) of water, water year October 1956 to Sep

Day

1...................

4. ..................

5. ..................

6. ..................

8. ..................

9. ..................

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

14...................

17...................

20. ..................

21. ..................

22. ..................

23. ..................

24...................

25...................

26. ..................

27...................

28. ..................

29. ..................

30. ..................

31...................

October

max

51 

52 

49 

49 

50

51 

52 

51 

52 

51

49 

48 

48 

47 

47

49 

48 

48 

46 

47 

46 

44 

44 

42 

43

44 

44 

44 

43 

43 

41

47

rain

47 

47 

44 

45 

46

44 

47 

47 

49 

49

47 

46 

46 

46 

46

47 

48 

46 

44 

46

44 

42 

42 

41 

42

43 

43 

42 

42 

41 

39

45

November

max

41 

41 

43 

43 

43

44 

44 

43 

43 

43

45 

43 

43 

40 

40

40 

40 

39 

37 

38

39 

40 

40 

40 

40

40 

39 

40 

40 

39

41

mln

39 

39 

41 

42 

41

42 

42 

41 

42 

42

43 

42 

40 

39 

38

39 

39 

37 

37 

37

38 

39 

39 

40 

39

39 

38 

39 

39 

38

40

December

max

39 

41 

41 

41 

38

37 

35 

37 

39 

39

40 

41 

41 

41 

41

41 

41 

41 

41 

41 

40 

39 

40 

40 

39

39 

39 

39 

39 

40 

40

40

mln

38 

39 

41 

38 

37 

35 

35 

35 

37 

39

39 

40 

40 

40 

40

40 

41 

41 

40 

40

39 

39 

39 

39 

39

38 

38 

38 

38 

39 

40

39

January

max

40 

40 

40 

38 

38

37 

38 

38 

38 

38

38 

38 

38 

39 

39

36 

34 

35 

35 

36

36 

36 

36 

36 

34

34 

34 

34 

34 

34 

34

37

min

40 

40 

38 

38 

37 

36 

37 

38 

38 

38

38 

38 

38 

38 

36

34 

34 

34 

35 

35

36 

36 

36 

34 

34

34 

33 

33 

34 

33 

33

36

February

max

34 

34 

35 

35 

36 

38 

37 

38 

38 

37

38 

38 

38 

39 

39

39 

39 

39 

38 

37

35 

34 

37 

36 

37

37 

39 

39

37

min

33 

33 

34 

35 

35 

36 

36 

37 

37 

36

37 

37 

36 

38 

37

36 

36 

36 

37 

35

33 

33 

33 

35 

36

37 

37 

38

36

March

max

39 

39 

40 

39 

39

39 

39 

40 

40 

39

39 

39 

39 

38 

39

39 

40 

40 

41 

39

38 

38 

39 

41 

43

42 

42 

41 

41 

42 

41

40

mln

38 

39 

39 

39 

38

39 

39 

39 

39 

38

38 

38 

38 

38 

38

37 

37 

37 

38 

37

37 

36 

37 

38 

39

38 

38 

40 

40 

40 

40

38

April

max

42 

40 

41 

41 

41

40 

43 

43 

43 

43

42 

42 

42 

42 

42

43 

44 

42 

43 

44

44 

46 

44 

43 

42

45 

48 

49 

48 

46

43

min

40 

40 

40 

40 

40

39 

39 

39 

39 

41

41 

41 

40 

40 

40

40 

42 

41 

41 

40

42 

42 

42 

41 

41

42 

42 

44 

44 

43

41
COWLITZ RIVER BASIN Continued 

COWLITZ RIVER NEAR KOSMOS, WASH.

LOCATION. Temperature recorder at gaging station, half a mile downstream from Tumwater Creek, l

southeast of Kosmos, Lewis County. 

DRAINAGE AREA. 1,042 square miles.

RECORDS AVAILABLE. Water temperatures: November 1952 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 62°F on several days during July and August. 

EXTREMES, 1952-57. Water temperatures: Maximum, 62°F on many days during July and August; mini

26, 27, 1956. 

REMARKS. Recorder stopped Dec. 14-27; range not determined for this period. Records of dischar

given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septe

Day

1...................

4...................

6. ..................

7...................

9. ..................

10. ..................

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

12...................

14. ..................

15...................

16...................

17. ..................

19...................

20. ..................

22...................

23...................

25...................

26...................

27...................

28. ..................

29...................

30. ..................

31...................

October

max

52 

52 

52 

51 

51

50 

51 

51 

52 

52

52 

53 

51 

51 

51

50 

50 

50 

49 

48

48 

47 

46 

45 

44 

44 

44 

44 

44 

44 

45

49

min

51 

51 

51 

51 

50

50 

50 

51 

51 

52

52 

51 

51 

51 

50

50 

50 

49 

48 

47

47 

46 

45 

44 

44 

44 

44 

44 

44 

44 

44

48

November

max

44 

44 

44 

45 

45

45 

45 

45 

44 

44

45 

45 

45 

44 

43

43 

43 

43 

41 

40

40 

40 

41 

41 

41

41 

41 

41 

41 

41

43

min

44 

44 

44 

44 

45

45 

45 

44 

44 

44

44 

45 

44 

43 

42

43 

43 

41 

40 

40

40 

40 

40 

41 

41

41 

41 

41 

41 

41

42

December

max

41 

41 

42 

42 

42 

40 

40 

40 

40 

41

41 

42 

42

38 

38 

38 

39

min

41 

41 

41 

42 

40

40 

40 

40 

40 

40

41 

41 

42

38 

38 

38 

38

January

max

39 

39 

39 

39 

38

38 

37 

37 

38 

38

38 

38 

38 

38 

38

37 

37 

38 

38 

38

38 

38 

38 

38 

38 

40 

39 

39 

39 

39 

38

38

min

39 

39 

39 

38 

38 

37 

37 

37 

37 

37

38 

38 

37 

37 

37

37 

37 

37 

38 

38

38 

38 

38 

38 

38 

38 

39 

38 

38 

38 

38

38

February

max

38 

38 

38 

38 

38 

38 

38 

38 

38 

38

38 

38 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

40

39

min

38 

38 

38 

38 

38

38 

38 

38 

38 

38

38 

38 

38 

39 

39

39 

39 

39 

39 

39

39 

39 

39 

39 

39 

39 

39 

39

39

March

max

40 

40 

41 

41 

41 

40 

40 

40 

40 

40

40 

40 

40 

40 

40

40 

41 

42 

42 

42

42 

41 

42 

42 

43 

42 

42 

42 

42 

42 

42

41

min

40 

40 

40 

40 

40

40 

40 

40 

40 

40

40 

40 

40 

40 

40

40 

40 

41 

42 

42

41 

41 

41 

42 

42

42 

42 

42 

42 

42 

42

41

April

max

42 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

42

41 

41 

41 

41 

42

42 

43 

43 

43 

43 

44 

47 

49 

49 

48

43

min

42 

42 

42 

42 

42 

41 

41 

42 

42 

42

42 

42 

42 

42 

41

41 

41 

41 

41 

41

41 

41 

43 

43 

43 

43 

44 

47 

48 

45

42
COWLITZ RIVER BASIN--Continued 

WEST FORK TILTON RIVER NEAR MORTON, WAS

LOCATION. Temperature recorder at gaging station, three-quarters of a mile upstream from mouth 

DRAINAGE AREA. 16.4 square miles.

RECORDS AVAILABLE. Water temperatures: August 1950 to May 1956, July to September 1957.

EXTREMES, 1950-57. Water temperatures: Maximum, 66°F Aug. 12, 1952; minimum, 33°F on several 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature

Day

2. ..................

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...................

Average .......

October

max min

November

max min

December

max min

January

max min

°F) of water, July to September 19

February

max min

March

max min

April

max min
COWLITZ RIVER BASIN Continued 

COWLITZ RIVER NEAR MAYFIELD, WASH.

LOCATION. Temperature recorder at gaging station, 1 mile upstream from Mill Creek, 2 miles dow

Mayfield, Lewis County. 

DRAINAGE AREA. 1,400 square miles.

RECORDS AVAILABLE. Water temperatures: 

EXTREMES, 1956-57. Water temperatures:

October 1950 to September 1957.

Maximum, 65°F Sept. 3; minimum, 35°F Dec. 7-9.

EXTREMES, 1950-57. Water temperatures: Maximum, 67°F Aug. 5, 9-13, 1952; minimum, 33°F Jan. 2

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septe

Day

2. ..................

4...................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10...................

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

14...................

16...................

17...................

18...................

19. ..................

21...................

22...................

23...................

24...................

25...................

26. ..................

27. ..................

28...................

29. ..................

31...................

October

max

53 

53 

53 

53 

52

51 

52 

52 

52 

53

53 

52 

51 

49 

49

49 

49 

49 

48 

47

47 

47 

45 

44 

44

44 

44 

44 

44 

44 

44

49

min

53 

53 

53 

52 

51

51 

51 

51 

52 

52

52 

51 

49 

49 

49 

49 

49 

48 

46 

46

46 

45 

44 

44 

44

44 

44 

44 

44 

44 

43

48

November

max

43 

43 

44 

45 

45

45 

45 

45 

44 

44

45 

45 

45 

44 

43

42 

42 

42 

40 

37

37 

38 

39 

39 

39

39 

39 

38 

38 

38

42

min

43 

42 

43 

44 

45

45 

45 

44 

44 

44

44 

45 

44 

43 

42

42 

42 

40 

37 

37

37 

37 

38 

39 

39

39 

38 

37 

37 

37

41

December

max

38 

38 

40 

40 

4Q

38 

36 

35 

38

43 

43 

43 

43

43 

43 

44 

44 

44

44 

43 

43 

43 

43

42 

41 

41 

41 

41 

42

41

min

37 

37 

38 

40 

38

36 

35 

35 

35 

38

43 

43 

43 

43

43 

43 

43 

44 

44

43 

43 

42 

42 

42

41 

41 

41 

41 

41 

41

41

January

max

42 

42 

42 

42 

42

41 

39 

40 

40 

40

40 

40 

40 

40 

40 

40 

38 

37 

37 

37

37 

37 

37 

37 

37

36 

36 

36 

36 

36 

36

39

min

42 

42 

42 

42 

41

39 

39 

39 

39 

39

40 

40 

40 

40 

40

38 

37 

37 

37 

37

37 

37 

37 

37 

36

36 

36 

36 

36 

36 

36

38

February

max

36 

36 

36 

36 

37

38 

38 

38 

39 

39

40 

41 

41 

41 

41

42 

42 

42 

42 

42

41 

39 

39 

41 

41

41 

42 

43

40

min

36 

36 

36 

36 

36

37 

38 

38 

38 

39

40 

40 

41 

41 

41

41 

41 

41 

42 

40

39 

39 

39 

39 

41

41 

41 

42

39

March

max | min

43 

43 

43 

43 

43

43 

43 

43 

43 

43

43 

42 

42 

42 

42

43 

44 

46 

46 

46

44 

43 

44 

45 

46

46 

47 

47 

46 

46 

46

44

43 

43 

43 

43 

43

42 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

43 

43 

44 

44

43 

43 

43 

44 

45

45 

45 

46 

46 

46 

46

43

April

max

47 

47 

46 

46 

46

46 

46 

47 

47 

47

47 

47 

47 

47 

47

47 

47 

47 

46 

46

46 

48 

48 

48 

46

48 

51 

54 

54 

53

48

min

45 

46 

45 

46 

46

44 

44 

45 

46 

47

46 

47 

47 

47 

45

45 

46 

46 

46 

44

46 

46 

48 

46 

45

45 

48 

50 

51 

49

46
COWLITZ RIVER BASIN Continued 

TOUTLE RIVER NEAR SILVER LAKE, WASH.

LOCATION. Temperature recorder at gaging station just downstream from highway bridge, half a m

Forks, and 5 miles northeast of Silver Lake, Cowlitz County. 

DRAINAGE AREA. 474 square miles.

RECORDS AVAILABLE. Water temperatures: October 1950 to September 1957. 

EXTREMES, 1950-57. Water temperatures: Maximum, 72°F Aug. 4, 1952; minimum, 33°F Jan. 1-3, No

REMARKS. Thermograph not operating Dec. 12 to June 6; July 3 to Sept. 17; range not determined

to September 1957 given in WSP 1518.

Temperature (°f) of water year October 1956 to September 1

Day

1...................

2. ..................

4. ..................

5. ..................

6. ..................

7. ..................

8. ..................

9. ..................

10. ..................

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

12. ..................

13...................

14. ..................

15. ..................

16. ..................

17. ..................

18...................

20. ..................

21...................

22, ..................

23...................

24. ..................

25...................

26. ..................

27. ..................

28. ..................

29. ..................

30. ,.;...............

31. ..................

October

max

54 

55 

53 

52 

52

53 

54 

52 

53

54

52 

51 

49 

49 

50 

51 

50 

49 

47 

48

48 

47 

46 

44 

45

45 

44 

44 

44 

44 

43

49

min

50 

52 

49 

49 

47

48 

48 

50 

51 

52

50 

49 

48 

48 

49

49 

49 

47 

46 

47

47 

45 

44 

43 

44

44 

44 

43 

43 

43 

42

47

November

max

43 

43 

45 

45 

44

45 

45 

44 

44 

45

45 

45 

45 

42 

42

43 

43 

42 

40 

39

39 

39 

39 

40 

40

39 

39 

39 

39 

39

42

min

42 

41 

43 

44 

43

44 

44 

43 

43 

44

45 

45 

42 

41 

42

42 

42 

40 

38 

38

38 

39 

39 

39 

39

38 

38 

37 

38 

38

41

December

max

38 

41 

42 

41 

38

37 

36 

38 

39 

40

41

--

min

38 

38 

41 

38 

37

35 

35 

36 

38 

39

40

--

January

max min

February

max min

March

max min

April

max min
COWLITZ RIVER BASIN Continued 

COWLITZ RIVER AT CASTLE ROCK, WASH.

LOCATION. Temperature recorder at gaging station, at highway bridge in Castle Rock, Cowlitz Cou

14 miles upstream from mouth. 

DRAINAGE AREA. 2,238 square miles.

RECORDS AVAILABLE. Water temperatures 

EXTREMES, 1956-57. Water temperatures

August 1950 to September 1957.

Maximum, 68°F on several days in August and September; 

EXTREMES, 1950-57. Water temperatures: Maximum, 72°F Aug. 21, 1951; minimum, freezing point on 

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (*F) of water, water year October 1956 to Sept

Day

2...................

3...................

4. ..................

5. ..................

6. ..................

7...................

8...................

9. ..................

10. ..................

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

12...................

13...................

15...................

16...................

17. ..................

19. ..................

20. ..................

21...................

22...................

23. ..................

24. ...........'.......

25...................

26. ..................

27. ..................

28. ..................

29. ..................

30. ..................

31. ..................

Average .......

October

max

55 

55 

55 

55 

55 

55 

54 

54 

54 

55 

55 

55 

54 

54 

53

52 

52 

52 

51 

49 

49 

49 

48 

47 

46

46 

46 

47 

47 

46 

46

51

min

55 

55 

55 

55 

55

54 

54 

54 

54 

54 

55 

54 

54 

53 

52

52 

52 

51 

49 

49

49 

48 

47 

46 

46

46 

46 

46 

46 

46 

45

51

November

max

45 

44 

44 

45 

45

45 

45 

45 

45 

45

44 

44 

45 

44 

43

43 

42 

42 

42 

39

37 

38 

38 

39 

39

39 

39 

39 

38 

38

42

min

44 

44 

44 

44 

45 

45 

45 

45 

45 

44

44 

44 

44 

43 

43

42 

42 

42 

39 

37

371 

37 

38 

38 

39

39 

39 

38 

38 

37

42

December

max

38 

38 

38 

38 

38

38 

38 

37 

37 

39 

39 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

39 

39 

39 

39

39

min

37 

37 

38 

38 

38 

38 

37 

36 

36 

37

39 

39 

39 

39 

39

39 

39 

39 

39 

39 

39 

39 

39 

39 

39

39 

39 

39 

39 

39 

39

38

January

max

39 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

39 

37 

36 

36

36 

36 

37 

37 

37

36 

36 

36 

36 

36 

36

38

min

39 

39 

39 

39 

39 

39 

39 

39 

39 

39 

39 

39 

39 

39 

39

39 

37 

36 

36 

36

36 

36 

36 

37 

36

36 

36 

36 

36 

36 

35

38

February

max

35 

35 

35 

35 

36

36 

36 

38 

38 

38

38 

39 

39 

39 

40

40 

40 

41 

41 

41

41 

41 

41 

41 

41

41 

41 

41

39

min

35 

35 

35 

35 

35 

36 

36 

36 

38 

38

38 

38 

39 

39 

39

40 

40 

40 

41 

41

41 

41 

40 

40 

40

40 

40 

41

38

March

max

41 

41 

41 

43 

43

43 

43 

43 

43 

43

43 

43 

43 

43 

43

44 

44 

44 

45 

45

45 

45 

44 

45 

45

46 

46 

46 

46 

46 

46

44

min

40 

40 

41 

41 

43 

43 

43 

43 

43 

43

43 

43 

43 

43 

43

43 

44 

44 

44 

45

45 

44 

44 

44 

45

45 

46 

46 

46 

46 

46

44

April

max

46 

46 

46 

46 

46

46 

46 

46 

46 

46

46 

46 

46 

46 

46

46 

47 

47 

47 

47

47 

48 

48 

48 

48

48 

50 

52 

53 

53

47

min

46 

46 

46 

46 

46

46 

44 

45 

46 

46

46 

46 

46 

46 

46

46 

46 

47 

47 

47

47 

47 

48 

48 

48

47 

48 

50 

52 

53

47
COWLITZ RIVER BASIN Continued

COWEMAN RIVER NEAR KELSO, WASH.

LOCATION. Temperature recorder at gaging station, 3 miles downstream from Goble Creek, 3.8 mil

upstream from mouth. 

DRAINAGE AREA. 119 square miles.

RECORDS AVAILABLE. Water temperatures: July 1950 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 74°F July 29; minimum, 34°F on several days i

EXTREMES, 1950-57. Water temperatures: Maximum, 81°F Aug. 4, 1952; minimum, freezing point on 

REMARKS.---Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Sept

Day

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...................

Average .......

October

max

57 

56 

55 

55 

53

52 

53 

53 

56 

56

55 

53 

52 

50 

51

54 

53 

52 

49 

49

49 

48 

47 

45 

47

47 

47 

47 

45 

45 

45

51

min

53 

53 

51 

53 

49

48 

49 

52 

53 

55

53 

52 

50 

50 

50

51 

52 

49 

48 

48

48 

47 

45 

45 

45

47 

47 

45 

45 

45 

45

49

November

max

45 

45 

46 

46 

46

47 

47 

47 

46 

46

49 

49 

48 

46 

45 

45 

46 

46 

44 

41

41 

42 

42 

41 

41

40 

40 

38 

37 

38

44

min

45 

45 

45 

46 

46

46 

47 

46 

45 

45

46 

48 

46 

45 

44

44 

45 

44 

41 

40

40 

41 

41 

40 

40

39 

38 

37 

37 

37

43

December

naax

39 

40 

41 

41 

39

38 

36 

38 

41 

44

45 

45 

45 

45 

45 

46 

46 

46 

46 

45

44 

43 

44 

44 

42

41 

40 

40 

39 

40 

41

42

min

37 

38 

40 

39 

38

36 

36 

36 

38 

41

44 

45 

45 

45 

45 

45 

45 

45 

44 

44

43 

43 

43 

42 

41

40 

40 

39 

38 

38 

40

41

January

max

41 

42 

42 

42 

41

39 

39 

39 

39 

40

41 

41 

40 

40 

40

39 

36 

35 

36 

37

37 

37 

37 

37 

35

35 

35 

35 

35 

35 

35

38

min

41 

41 

41 

41 

39

38 

38 

39 

39 

39

40 

40 

39 

39 

39

36 

35 

34 

34 

36

37 

37 

37 

35 

34

34 

34 

34 

34 

34 

34

37

February

max

36 

37 

38 

38 

39

41 

40 

40 

41 

41

41 

41 

41 

41 

42

41 

41 

41 

41 

41

39 

38 

42 

43 

44

45 

45 

44

41

min

34 

36 

37 

38 

38

39 

39 

39 

40 

40

40 

40 

40 

41 

41 

39 

39 

39 

40 

39

37 

38 

38 

42 

43

44 

44 

42

40

March

max

45 

45 

45 

44 

44

44 

44 

44 

44 

43

44 

44 

42 

42 

43

43 

44 

45 

45 

45

43 

43 

44 

45 

45

45 

46 

48 

48 

48 

47

45

min

42 

45 

43 

42 

43

43 

43 

44 

43 

43

43 

42 

41 

42 

42

42 

42 

41 

42 

43

42 

42 

42 

44 

43

41 

42 

45 

47 

46 

46

43

April

max

47 

47 

48 

48 

49

47 

48 

49 

50 

50

48 

48 

49 

49 

47

49 

51 

50 

48 

49

49 

51 

51 

49 

48

51 

55 

59 

61 

60

50

min

44 

46 

46 

47 

47

44 

43 

44 

45 

48

47 

47 

47 

46 

45 

44 

47 

48 

47 

45

46 

47 

49 

47 

47

47 

48 

51 

54 

56

47
ABEBNATHY CREEK BASIN 

ABEBNATHY CREEK NEAR LONGVIEW, WASH.

LOCATION. Temperature recorder at gaging station, 1 mile upstream from mouth and 11 miles north

DRAINAGE AREA. 20.3 square miles.

RECORDS AVAILABLE. Water temperatures: June 1950 to September 1955, August 1956 to September 

EXTREMES. 1956-57. Water temperatures: Minimum, 36"F Jan. 19, 25-31.

EXTREMES 1950-55. Water temperatures: Maximum, 68°F Aug. 19-21, 1950; minimum, 34 F Mar. 7, 

REMARKS Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Tern

Day

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...................

October

max

53 

54 

52 

53 

51

51 

52 

52 

53 

53

52 

52 

50 

49 

50

51 

51 

51 

49 

49

49 

47 

46 

45 

46

46 

46 

45 

44 

44 

44

49

mln

50 

53 

48 

51 

47

47 

48 

50 

52 

52

49 

50 

48 

49 

49

50 

51 

49 

49 

49

48 

46 

45 

44 

45

46 

45 

43 

44 

44 

43

48

November

max

43 

43 

44 

44 

44

45 

45 

44 

44 

44

45 

45 

44 

42 

42

43 

43 

42

--

mln

43 

43 

43 

44 

44

44 

44 

43 

43 

44

44 

44 

42 

41 

42 

42 

42 

42

--

December

max

42 

43 

42 

40

39 

38 

39 

42 

44

45 

45 

45 

45 

45

45 

45 

45 

45 

45

44 

43 

43 

43 

43

42 

42 

41 

40 

40 

42

41

mln

42 

42 

40 

39

38 

37 

38 

39 

42

44 

45 

45 

45 

45 

45 

44 

44 

44 

44

43 

43 

43 

43 

42

42 

41 

40 

40 

40 

40

41

oerature (°F) of water, water year October 1956 to Septem

January

max

42 

42 

42 

42 

40

39 

39 

39 

40 

40

40 

40 

40 

40 

40 

40 

39 

38 

38 

39

40 

41 

41 

39 

37

36 

36 

36 

36 

37 

37

39

min

42 

42 

42 

40 

39

39 

38 

38 

39 

40

40 

40 

40 

40 

40 

38 

37 

37 

36 

38

39 

40 

39 

37 

36

36 

36 

36 

36 

36 

36

38

February

max

40 

39 

40 

41 

41

41 

41 

42 

42 

42

42 

43 

43 

43 

44

44 

45 

45 

45 

44

42 

42 

42

44 

45

46 

46 

46

43

min

37 

38 

39 

40 

41

41 

41 

41 

42 

42

42 

42 

42 

43 

43

42 

43 

43 

44 

42

41 

41 

41 

42 

44

45 

46 

46

42

March

max

46 

46 

46 

46 

46

46 

47 

47 

47 

47

47 

47 

47 

47 

47

47 

47 

47 

49 

49

48 

47 

47 

47 

47

47 

47 

47 

47 

47 

47

47

mln

46 

46 

46 

46 

46

46 

46 

47 

47 

47

47 

47 

47 

47 

47

47 

47 

46 

47 

48

47 

47 

47 

47 

47

47 

47 

47 

47 

47 

47

47

April

max

47 

47 

47 

47 

47

47 

48 

48 

48 

48

48 

48 

48 

48 

48

48 

48 

48 

48 

48

48 

48 

48 

48 

48

48 

48 

48 

48 

48

48

min

47 

47 

47 

47 

47

47 

47 

47 

47 

47

48 

48 

48 

48 

48

48 

48 

48 

48 

48

48 

48 

48 

48 

48 

48 

48 

48 

48 

48

48
ELOKOMIN RIVER BASIN 

ELOKOMIN RIVER NEAR CATHLAMET, WASH. 

LOCATION. Temperature recorder at gaging station, 125 feet upstream from railroad bridge, 2J mil

4i miles upstream from mouth. 

DRAINAGE AREA.--65.8 square miles.

RECORDS AVAILABLE. Water temperatures: June 1950 to September 1957.

EXTREMES, 1956-57. Water temperatures: Maximum, 66°F Aug. 14; minimum, 35°F Jan. 28-31.

EXTREMES, 1950-57. Water temperatures: Maximum, 74°F July 19, 1956; minimum, freezing point Feb

REMARKS. Records of discharge for water year October 1956 to September 1957 given in WSP 1518.

Temperature (°F) of water, water year October 1956 to Septem

Day

3...................

4. ..................

5. ..................

7. ..................

10. ..................

14...................

16...................

17. ..................

23. ..................

24. ..................

25...................

30. ..................

31...................

Average .......

October

max

55 

57 

55 

56 

54

55 

56 

55 

55 

55

55 

54 

52 

51 

52 

52 

52 

52 

50 

50

50 

49 

48 

47 

49 

49 

48 

47 

46 

46 

46

52

min

51 

52 

51 

53 

50

50 

52 

53 

54 

55

52 

52 

50 

50 

51 

51 

52 

50 

49 

50

49 

48 

47 

46 

47

48 

47 

45 

45 

46 

46

50

November

max

46 

46 

47 

48 

48

48 

48 

48 

47 

48

49 

49 

49 

46 

45

46 

46 

46 

45 

43

43 

43 

43 

43 

42

42 

42 

41 

40 

41

45

mln

45 

46 

46 

47 

48

48 

48 

47 

47 

47

48 

49 

46 

45 

45 

45 

46 

45 

43 

42

42 

43 

43 

42 

42

42 

41 

40 

40 

40

45

December

max

41 

43 

43 

43 

41

40 

38 

39 

42 

42

42 

42 

42 

42 

42 

42 

42 

42 

42 

42

42 

41 

41 

41 

41

39 

38 

38 

38 

39 

41

41

min

41 

41 

43 

41 

40

38 

38 

38 

39 

42

42 

42 

42 

42 

42

42 

42 

42 

42 

42

41 

41 

41 

41 

39 

38 

38 

38 

38 

38 

39

40

January

max

41 

41 

41 

41 

40

38 

38 

39 

39 

40

41 

41 

41 

41 

41

41 

39 

38 

37 

38

38 

40 

40 

40 

37

36 

36 

36 

35 

35 

36

39

min

41 

41 

41 

40 

38

38 

38 

38 

39 

39

40 

41 

41 

41 

41

39 

37 

37 

37 

37

38 

38 

40 

37 

36

36 

36 

35 

35 

35 

35

38

February

max

38 

39 

39 

40 

40

42 

42 

42 

42 

42

42 

43 

43 

43 

43

43 

43 

43 

43 

43

42 

41 

43 

43 

43

43 

43 

43

42

min

36 

38 

38 

39 

40

40 

42 

42 

42 

42

42 

42 

43 

43 

43

42 

42 

42 

43 

42

41 

41 

41 

43 

43

43 

43 

43

March

max

43 

43 

43 

43 

44

44 

44 

44 

44 

44

44 

44 

43 

43 

43 

43 

43 

44 

44 

44

43 

41 

42 

42 

42 

42 

42 

43 

43 

43 

43

41 ^ 43'

min

43 

43 

43 

43 

43

44 

44 

44 

44 

44

44 

43 

42 

43 

43 

43 

43 

43 

43 

43

41 

41 

41 

42 

42

42 

42 

42 

43 

43 

43

43

April

max

45 

45 

45 

45 

45

46 

46 

47 

47 

47

47 

47 

48 

49 

48 

48 

50 

50 

49 

51

51 

53 

52 

51 

51

53 

55 

58 

59 

59

50

min

43 

44 

44 

45 

45

45 

45 

46 

46 

46

47 

47 

47 

47 

47 

47 

47 

48 

47 

47

48 

49 

50 

48 

49

49 

50 

52 

54 

55

47
GRAYS RIVER BASIN 

WEST BRANCH GRAYS RIVER NEAR GRAYS RIVER, WA

station> X mile uPstrea» f 

RECORDS AVAILABLE. Water temperatures: June 1950 to September 1957

S ' i9, 50 -56 -" *!ater temperatures: Maximum, 67 °F July 19, 23, 1956; minimum 33 'F Feb. 17, 

 ° ° rnn' *" "" "' JUly 5 " AUg< 13i Pange "Ot deterfflined 

mouth and 3J miles north

septemb195 gveninwspi518

Temperature (°F) of water, water year October 1956 to Septemb

Day

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...................

October

max

53 

54 

53 

54 

53

54 

55 

54 

54 

54

53 

52 

52 

51 

51

51 

51 

50 

49 

49

49 

48 

47 

46 

47 

47 

47 

46 

45 

45 

45

50

min

50 

52 

50 

52 

50

51 

53 

53 

54 

53

51 

51 

51 

51 

51

50 

50 

49 

49 

49

48 

47 

46 

46 

46 

47 

46 

45 

45 

45 

45

49

November

max

45 

45 

46 

46 

46

46 

46 

46 

46 

47

48 

48 

47 

46 

46

46 

46 

46 

44 

43

43 

44 

44 

44 

44 

44 

43 

42 

42 

43

45

min

45 

45 

45 

46 

46

46 

46 

46 

46 

46

47 

47 

46 

46 

46

46 

46 

44 

43 

43

43 

43 

44 

44 

44 

43 

42 

42 

42 

42

45

December

max

42 

43 

43 

43 

39

39 

39 

40 

41 

44

44 

44 

44 

44 

44

44 

44 

44 

44 

44

44 

44 

43 

43 

43 

43 

43 

42 

42 

42 

42

43

min

42 

42 

43 

39 

39

39 

38 

38 

40 

43

44 

44 

44 

44 

44

44 

44 

44 

44 

44

43 

43 

43 

43 

43 

43 

42 

42 

42 

42 

42

42

January

max

42 

42 

42 

42 

42

41 

41 

40 

40 

40

40 

40 

40 

40 

40

40 

40 

39 

39 

39

39 

39 

39 

39

--

min

42 

42 

42 

42 

41

41 

40 

40 

40 

40

40 

40 

40 

40 

40

40 

39 

39 

39 

39

39 

39 

39 

39

--

February

max min

March

max

43 

43 

42 

42

42 

43 

43 

44 

45

45 

43 

43 

43 

43 

43 

44 

44 

45 

45 

45

--

min

43 

42 

42 

42

42 

42 

43 

43 

44

43 

43 

43 

43 

43 

43 

43 

44 

44 

45 

45

r.

April

max

45 

45 

45 

45 

46

46 

46 

46 

47 

47

47 

47 

47 

47 

47

47 

47 

47 

47 

47

47 

48 

48 

48 

47 

48 

50 

52 

54 

54

47

min

45 

45 

45 

45 

45

45 

46 

45 

46 

47

47 

47 

47 

47 

46

45 

47 

47 

47 

46

46 

46 

48 

47 

47 

47 

47 

49 

51 

52

47
COQUILLE RIVER BASIN 

ROCK CREEK NEAR ILLAHE, OREG.

LOCATION. Temperature recorder at gaging station, three-quarters of a mile upstream from mout

DRAINAGE AREA. 13.0 square miles.

RECORDS AVAILABLE. Water temperatures: October 1956 to September 1957. 

EXTREMES, 1956-57. Water temperatures: Maximum, 68°F July 5; minimum, 34°F Jan. 29.

REMARKS. Recorder started 12 m. Oct. 25. Recorder stopped Apr. 5-10, Apr. 12 to May 28; rang

respectively. Records of discharge for water year October 1956 to September 1957 given in 

Temperature (°f) of water, water year October 1956 to Sep

/Becorder with temperature attachment, continuous ethly alcohol-actu

Day

4...................

5. ..................

7. ..................

8. ..................

9. ..................

12...................

14...................

16. ..................

17...................

18...................

20. ..................

21...................

22...................

23...................

24. ..................

25...................

26...................

27. ..................

28. ..................

29...................

30...................

31...................

Average .......

October

max

--

--

"

48 

48 

46 

45 

47 

47 

44

min

--

--

-

"-

46 

45 

44 

44 

44 

44

November

max

44 

46 

46 

46 

46

47 

47 

47 

47 

47

47 

46 

46 

44 

44

46 

46 

44 

43 

42

42 

42 

42 

42 

42 

42 

41 

41 

40 

40

44

min

43 

44 

45 

45 

45

46 

46 

45 

45 

46

46 

45 

44 

43 

42

44 

44 

43 

41 

40

41 

41 

41 

41 

41 

41 

40 

40 

40 

39

43

December

max

40 

40 

41 

41 

38

38 

38 

38 

38 

41

43 

44 

44 

44 

43

43 

44 

44 

42 

41

41 

40 

42 

41 

40 

40 

40 

40 

40 

42 

42

41

min

39 

39 

39 

38 

36

36 

37 

38 

38 

38

41 

43 

44 

43 

42

43 

43 

42 

41 

40

40 

39 

40 

40 

39 

39 

39 

39 

39 

40 

42

40

January

max

42 

41 

40 

38 

38

37 

38 

36 

38 

39

40 

41 

41 

41 

41

42 

41 

41 

41 

41

42 

41 

41 

40 

37 

37 

36 

36 

36 

36 

38

39

min

41 

40 

38 

38 

37

36 

36 

36 

36 

38

39 

40 

40 

40 

41

41 

41 

40 

40 

40

41 

41 

40 

37 

35 

35 

35 

35 

34 

35 

36

38

February

max

39 

40 

40 

40 

40

39 

39 

40 

41 

41

41 

42 

42 

42 

42

42 

42 

42 

42 

42

42 

42 

44 

44 

44 

44 

44 

44

42

min

38 

39 

39 

39 

39

39 

39 

39 

40 

40

40 

40 

41 

41 

40

40 

41 

40 

41 

42

42 

42 

42 

43 

43 

44 

44 

43

41

March

max

46 

44 

44 

44 

44

'44 

44 

45 

44 

44

44 

42 

42 

42 

42

42 

42 

44 

44 

42

42 

42 

43 

44 

44 

44 

46 

45 

44 

43 

43

44

min

44 

43 

43 

44 

44

44 

44 

44 

43 

42

42 

40 

40 

42 

42

41 

41 

41 

41 

40

40 

40 

40 

42 

41 

41 

42 

44 

42 

42 

42

42

April

max

44 

46 

46 

48

48

min

42 

42 

44 

44

44
COQUILLE RIVER BASIN Continued 

SOUTH FORK COQUILLE RIVER NEAR POWERS, OR

LOCATION. Temperature recorder at gaging station, three-quarters of a mile upstream from Hall 

DRAINAGE AREA. 93.2 square miles.

RECORDS AVAILABLE. Water temperatures: November 1956 to September 1957.

REMARKS. Recorder started Nov. 16; not in operation Dec. 11 to July 24. Records of discharge 

given in WSP 1518.

Temperature (°F) of water, November 1956 to September 

/Recorder with temperature attachment, continuous ethyl alcohol-act

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...................

28...................

29. ..................

30. ..................

31...................

Average .......

October

max

-

min

November

max

48 

48 

47 

45 

43

44 

44 

44 

44 

43 

42 

42 

41 

41 

40

min

45 

47 

45 

43 

42

43 

43 

42 

42 

41 

41 

41 

40 

40 

39

.-

December

max

40 

40 

40 

41 

40

39 

38 

38 

39 

41

min

39 

39 

39 

40 

39

38 

37 

37 

38 

39

January

max min

February

max min

March

max min

April

max min
ROGUE RIVER BASIN 

ROGUE RIVER AT GRANTS PASS, OREG.

LOCATION. At bridge on U.S. Highway 99 at Grants Pass, Josephine County, and 0.6 mile downstr

DRAINAGE AREA. 2,420 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: January 1953 to September .1957.

Water temperatures: January 1953 to September 1957. 

EXTREMES, 1956-57. Dissolved.solids: Maximum, 83 ppm Feb. 1-15; minimum, 67 ppm May 1 to June 3

Hardness: Maximum, not determined; minimum, 29 ppm Dec. 12-31, June 1-30.

Specific conductance: Maximum daily, 206 micromhos Oct. 18; minimum daily, 62 micromhos Dec. 

Water temperatures: Maximum, 72°F on several days during July, August and September; minimum, 

EXTREMES, 1953-57. Dissolved solids: Maximum, 136 ppm Feb. 16-22,1954; minimum, 53 ppm May 22-31

Hardness: Maximum, 84 ppm Feb. 16-22, 1954; minimum, 21 ppm June 21-30, 1955.

Specific conductance: Maximum daily, 251 micromhos Feb. 21, 1954; minimum daily, 58 micromhos 

Water temperatures: Maximum, 73°F Aug. 7, 8, 1955; minimum, 35'F Jan. 29-30, 1957.

REMARKS. Records of specific conductance of daily samples available in district office at Portlan

September 1957 given in WSP 1518.

Chemical analyses, in parts per million, water year October 195

Date of collection

Oct. 1-15, 1956...

Oct. 17,19-26,30-31

Jan. 1-31, 1957

Feb. 16-28 .......

July 1-31.........

Weighted average

Mean 

discharge 

(cfs)

1,802 

1,800 

3,938 

3,380 

2,916

3,865 

7,584 

3,308 

3,002 

11,602 

12,710 

9,044

5,849 

3,700 

2,039 

1,349 

1,185 

1,289

4,072

Silica 

(SiO,)

Iron 

(Fe)

Calcium 

(Ca)

8 3 

17 

9.1 

18 

11

9.5 

7.9 

9.9 

10 

9.1 

8 3 

9.5

9.5 

7.9 

7.9 

7.9 

8.3 

8.3

9.0

Magnesium 

(Mg)

2.6 

6.9 

3.1 

7.3 

2.0

3.1 

2.2 

3.3 

3. 8 

2.4 

2.4 

3.3

3.3 

2.4 

2.2 

2.6 

2.6 

2.4

2.7

Sodium 

(Na)

5.4 

10 

5.8 

11 

5.4

5.7 

4.0 

5.4 

5.7 

4.3 

3.8 

4.8

4.9 

4.5 

4.6 

5.0 

5.2 

5.3

4.7

Potassium 

(K)

Bicarbonate 

(HCO,)

50 

100 

52 

104 

52

54 

42 

54 

57 

47 

44 

53

53 

45 

45 

48 

49 

48

49

Sulfate 

(S04 )

1.5 

2.4 

2.8

2.5 

2.1 

3.0 

2.8 

2.2 

1.9 

2.9

2.2 

2.1 

1.9 

1.9 

1.2 

1.6

2.2

Chloride 

(Cl)

2.5 

6.5 

2.5 

7.5 

2.5

2.8 

1.8 

2.5 

2.5 

2.0 

1.2 

1.2

1.5 

1.5 

1.5 

1.8 

2.0 

2.2

1.8

Fluoride 

(F)

Nitrate 

(NO,)

0.2 

.1 

.3 

.2 

.3

.4 

.2 

.7 

.4 

.5 

.6 

.3

.4 

.4 

.1 

1.1

.7 

.6

0.4

Boron 

(B)

0.02 

.01

.02 

.02 

.04

.06

.01 

.04 

.02 

.01 

.01 

.03

"
492 PACIFIC SLOPE BASINS IN OREGON AND LOWER COLUMBIA RIVER BASIN

ROGUE RIVER BASIN Continued 

ROGUE RIVER AT GRANTS PASS, OREG.-- Continued

Temperature (°F) of water, water year October 1956 to September 1957 

/Once-daily measurement at approximately 12 mj

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

Average

Oct.

54

54

54

54

55

55

55

56

55

55

55

55

53

51

49

49

48

48

47

47

 fl

45

45

45

45

45

44

44

44

44

44

50

Nov.

44

44

44

44

44

44

44

44

44

44

44

44

43

43

43

44

43

42

41

40

39

39

39

39

39

40

40

40

40

40

--

42

Dec.

40

39

38

37

37

37

36

37

37

38

40

43

44

46

46

46

46

46

45

45

45

45

42

42

41

41

41

39

40

39

40

41

Jan.

40

40

40

39

40

41

41

40

40

40

40

40

41

41

42

42

40

38

39

39

40

40

40

39

38

37

36

36

35

35

36

39

Feb.

38

39

39

40

38

39

39

39

40

40

40

39

41

43

44

45

46

47

46

46

46

46

46

46

45

45

46

46

43

Mar.

47

47

47

47

47

47

47

47

46

46

46

45

45

45

45

45

46

46

46

46

45

45

45

46

46

47

47

48

47

47

47

46

Apr.

47

48

48

48

48

48

47

48

48

49

49

49

48

48

48

47

47

47

47

47

47

47

48

49

49

49

50

52

54

56

49

May

55

57

57

58

58

59

59

58

58

57

57

56

55

55

56

57

56

56

55

56

56

55

55

56

57

58

58

59

60

61

62

57

June

63

62

65

66

66

65

65

65

65

65

66

65

64

62

61

62

62

63

63

63

64

64

65

67

68

68

69

69

69

68

65

July

67

66

67

69

70

71

71

70

70

71

70

71

68

68

68

69

70

70

69

69

71

70

71

71

70

70

70

71

72

72

71

70

Aug.

70

70

68

68

67

67

67

68

68

68

67

68

68

70

72

72

72

72

71

70

69

69

68

67

66

66

65

65

64

64

64

68

Sept.

64

64

64

66

67

69

70

71

72

71

72

71

72

71

69

67

66

65

65

64

64

64

63

64

62

60

59

57

56

56

66
INDEX

Abernathy Creek near Longvlew, Wash.... 486

Acidity ................................ 15

Agua Fria River below Lake Pleasant Dam,

Ariz............................... 202-203

Alameda Creek near Nlles, Calif......... 232-236

Aluminum.............................. 9

American River at Fair Oaks, Calif ...... 338-340

at Sacramento, Calif.................. 341

Anderson Creek near Anderson, Calif..... 358

Animas River at Farmington, N. Mex..... 121-126

Antioch, Calif., San Joaquin River at..... 297

Archuleta, N. Mex., San Juan River near . 110-115 

Arlington, Wash., Jim Creek near ....... 415

Arroyo De La Laguna at Sunol, Calif...... 236

at Verona, Calif...................... 236

Arroyo Las Positos near Pleasanton,

Calif.............................. 236

Auburn, Wash., Green River near........ 412

B

Bakersfield, Calif., Kern River near ..... 240

Bangor, Calif., South Honcut Creek near.. 331 

Bartlett Dam, Ariz., Verde River below.. 199-201 

Battle Creek near Cottonwood, Calif...... 361,363

Bear Creek near Stevinson, Calif......... 253

Bear River near Wheatland, Calif ........ 334

Bend, Calif., Sacramento River at ....... 310-312

Big Chico Creek near Chico, Calif........ 316

Big Trees, Calif., San Lorenzo River at.. 227 

Biggs, Or eg., Deschutes River near...... 462

Biola, Calif., San Joaquin River near..... 248-250

Blackfoot River near Bonner, Mont....... 420

Blacks Fork near Marston, Wyo.......... 55-57

Bloomfield, N. Mex., San Juan River at .. 116-120 

Bluff, Utah, San Juan River near ......... 133-138

Boise River at Notus, Idaho.............. 439-440

near Twin Springs, Idaho .............. 436-438

Boise River basin ...................... 436-440

Bonner, Mont., Blackfoot River near ..... 420

Boron ................................. 12

Boulder City, Nev., Lake Mead near...... 176-180

Breitenbush River above Canyon Creek,

near Detroit, Oreg ................. 472

Brentwood, Calif., Indian Slough near..... 286

Bright Angel Creek near Grand Canyon,

Ariz............................... 169

Bryant, Wash., Pilchuck Creek near ..... 417

Barney Creek near Burney, Calif......... 358

Butte City, Calif., Sacramento River at... 317-319 

Butte Creek near Chico, Calif............ 320

Byron, Calif., Italian Slough near ........ 285

Cache Creek near Capay, Calif........... 353

near Lower Lake, Calif ............... 351

Calaveras River at Jenny Lind, Calif ..... 276

Calcium ............................... 10

Cameo, Colo., Colorado River near ...... 31-33

Cameron, Ariz., Little Colorado River

at................................. 155-160

Capay, Calif., Cache Creek near......... 353

Capella, Calif., East Fork Russian River

near............................... 369

Carbonate and bicarbonate ............... 11

Carmel River near Carmel, Calif ........ 223

Cascade River at Marblemount, Wash..... 419

Castle Rock, Wash., Cowlitz River at .... 484

Cataldo, Idaho, Coeur d'Alene River at ... 423-424 

Cathlamet, Wash., Elokomin River near .. 487 

Cedar River near Landsburg, Wash ...... 413

Chehalis River near Grand Mound, Wash.. 400 

Chemical quality........................ 3

Chico, Calif., Big Chico Creek near....... 316

Butte Creek near....................... 320

Chittenden, Calif., Pajaro River at........ 225

Chloride................................ 11

Churn Creek near Anderson, Calif ........ 358

Cibola Valley, Ariz., Colorado River

below............................... 188-189

Cisco, Utah, Colorado River near ......... 43-48

Dolores River near .................... 37-42

Cispus River near Handle, Wash .......... 479

Clear Creek at French Gulch, Calif........ 361

Clear Lake at Lakeport, Calif............. 350

near Clear Lake Oaks, Calif............ 349

near Sulfur Bank, Calif................. 360

Clear Lake Oaks, Calif., Clear Lake

near................................ 349

Clear-water River at Kamiah, Idaho ....... 452-453

Clearwater River basin .................. 446-453

Clifton Court Ferry, Calif., Old River at.. 284 

Coeur d'Alene River at Cataldo, Idaho ..... 423-424

Collection and examination of samples ..... 3-6

Color................................... 13-14

Colorado River, at Kite, Utah ............ 103-109

at Hot Sulphur Springs, Colo ............ 22-24

at Lees Ferry, Ariz ................... 139-145

at Yuma, Ariz ........................ 208

below Cibola Valley, Ariz .............. 188-189

below Hoover Dam, Ariz.-Nev.......... 181-183

below Palo Verde Dam, Ariz. -Calif ..... 186-187

below Parker Dam, Ariz. -Calif......... 185

near Cameo, Colo ..................... 31-33

near Cisco, Utah ...................... 43-48

near Glenwood Springs, Colo............ 28-30

near Grand Canyon, Ariz ............... 162-168

near Topock, Ariz ..................... 184

Colorado River basin .................... 22-211

Columbia River at Grand Coulee Dam,

Wash............................... 425-426

at international boundary ............... 421-422

at Maryhill Ferry near Rufus, Oreg ..... 463-464

Colusa Trough near Colusa, Calif ......... 321

Composition of surface waters ............ 8-17

Cooperation............................. 19-20

Copco, Calif., Klamath River near ........ 383

Cornville, Ariz., Oak Creek near ......... 198

Corrosiveness........................... 15

Cosumnes River at McConnell, Calif....... 298, 299

at Michigan Bar, Calif ................. 294

Cottonwood Creek near Anderson, Calif.... 359

near Cottonwood, Calif................. 308-309

Courtland, Calif., Sacramento River near.. 355 

Coweman River near Kelso, Wash......... 485

Cowlitz River at Castle Rock, Wash ....... 484

near Kosmos, Wash.................... 480

near Mayfield, Wash................... 482

Cowlitz River basin...................... 479-485

Coyote Creek near Madrone, Calif.........

Crescent City, Calif., Smith River near....

Crooked River near Culver, Oreg .........

Culver, Oreg., Crooked River near .......

Deschutes River near..................

Cuyama River near Santa Maria, Calif....

Dale, Oreg., Desolation Creek near ......

Darrington, Wash., North Fork

Stillaguaxuish River near.............

Deer Creek at Highway 99E Bridge, near

Vina, Calif ........................

Del Puerto Creek near Grayson, Calif .....

231

398

459

459

458

222

457

416

314 

297 

Delta, Calif., Sacramento River at........ 300-301

Delta Cross-Channel near Walnut Grove,

Calif ............................... 295

493
494

Delta-Mendota Canal at Tracy pumping 

plant, Calif .......................

near Mendota, Calif..................

near Tracy, Calif....................

Deschutes River at Moody, near Biggs, 

Oreg .............................

near Culver, Oreg...................

near Madras, Oreg ..................

Deschutes River basin..................

Desolation Creek near Dale, Oreg.......

Detroit, Oreg., Breitenbush River near.. 

North Santiam River near.............

Dexter, Oreg., Middle Fork Willamette 

River near ........................

Dissolved solids .......................

Diversions and return flows at and

below Imperial Dam................

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

Dolores River near Cisco, Utah .........

Dolores River basin....................

Dos Palos, Calif., San Joaquin River

near..............................

Duchesne River near Randlett, Utah .....

Duwamish River basin .................

Eagle River at Gypsum, Colo ...........

East Fork Carson River near Gardnerville, Nev.........................

East Fork Lewis River near Heisson,

Wash..............................

East Fork Russian River at Potter Valley

powerhouse, Calif.................

near Calpella, Calif..................

Eel River, above Dos Rios, Calif........

at McCann, Calif ....................

at Scotia, Calif......................

Eel River basin........................

Elk City, Idaho, South Fork Clearwater

River near........................

Elokomin River near Cathlamet,

Wash.............................

Exchequer, Calif., Merced River at.....

Expression of results ..................

Fair Oaks, Calif., American River at ... 

Fall Creek below Winberry Creek, near

Fall Creek, Oreg..................

Farmington, N. Mex., Animas River at.. 

Feather River at Nicolaus, Calif ........

near Oroville, Calif..................

Fluoride..............................

Foster, Oreg., Middle Santiam River

near..............................

Fremont Ford Bridge, Calif., San

Joaquin River at...................

Friant, Calif., San Joaquin River below..

INDEX 

Page

Gardnerville, Nev., East Fork Carson

River near ........................

Gila Gravity Main Canal at Imperial Dam,

Ariz.-Calif ........................

Gila River at Kelvin, Ariz ..............

below Gillespie Dam, Ariz............

Gila River basin.......................

Gillespie Dam, Ariz., Gila River

below ............................

GlenwoodSprings, Colo., Colorado

River near ........................

Gold Bar, Calif., Wallace River at......

Grand Canyon, Ariz., Colorado River

near..............................

280-282 

283 

279

462 

458 

461

458-462 

457 

472 

471

467

13

209-211 

20

37-42 

37-42

252

77-79 

408-412

25-27 

215

477

369

379,380 

374

377-378 

374-380

450-451

487

257

338-340

468

121-126

335-337

326-330

11-12

474

254-256

247

215

209-210 

193-195 

204-206 

190-207

204-206

28-30 

414

162-168

Grand Coulee Dam, Wash., Columbia 

River at ..........................

Grand Junction, Colo., Gunnison River 

near..............................

Grand Mpund, Wash., Chehalie River 

near..............................

Grand Ronde River at Troy, Oreg .......

Grandview, Oreg., Metolius River near.. 

Grants Pass, Oreg., Rogue River at.....

Grays River, Wash., West Branch Grays 

River near ........................

Grayson, Calif., San Joaquin River

near .............................

Green River, Utah, Green River at......

San Rafael River near ................

Green River, Wyo., Green River

near .............................

Green River at Green River, Utah.......

near Auburn, Wash. (Duwamish River 

basin) ............................

near Green River, Wyo ..............

near Greendale, Utah ................

near Jensen, Utah ...................

near Ouray, Utah....................

near Palmer, Wash. (Duwamish River 

basin) ............................

Green River basin .....................

Greendale, Utah, Green River near......

Guadalupe River at San Jose, Calif ......

Guerneville, Calif., Russian River at....

Gunnison River near Grand Junction,

Colo .............................

Gypsum, Colo., Eagle River at .........

H

Hamilton City, Calif., Sacramento River

near..............................

Hardness .............................

Healdsburg, Calif., Russian River

near..............................

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

Heisson, Wash., East Fork Lewis River

near..............................

Henrys Fork at Linwood, Utah ..........

near Rexburg, Idaho .................

Hickman, Calif., Tuolumne River at.....

Kite, Utah, Colorado River at...........

Hoopa, Calif., Trinity River near .......

Hoover Dam, Ariz.-Nev., Colorado

River below.......................

Hopland, Calif., Russian River near.....

Hot Sulphur Springs, Colo., Colorado

River at ..........................

Humboldt River near Rye Patch, Nev ....

Hydrogen-ion concentration.............

Page

425-426 

34-36

400

445

460

491-492

488

259

91-96

97-102

49-54 

91-96

412

49-54 

61-63 

73-76 

83-S7

408-411

49-102

61-63

230

373

34-36 

25-27

315

14-15

372 

430-432

477

58-60

433

261

103-109 

392-396

181-183 

371

22-24

216-218

14

niahe, Oreg., Rock Creek near ......... 489

Imperial Dam, Ariz.-Calif., Gila Gravity

Main Canal at ..................... 209-210

Indian Creek near Crescent Mills,

Calif .......................... 360, 362, 363

Indian Slough near Brentwood, Calif ..... 286

International boundary, Columbia River

at................................ 421-422

Introduction........................... 1-3

Iron.................................. 10

Isabella Dam, Calif., Kern River below.. 239 

Italian Slough at mouth, near Byron,

Calif ............................. 285

Jasper, Oreg., Middle Fork Willamette 

River at ......................... 469
INDEX 

Page

Jenny Lind, Calif., Calaveras River at ... 276

Jensen, Utah, Green River near.......... 73-76

Jim Creek near Arlington, Wash ......... 415

K

Kalama River below Kalian Creek, near

Kalama, Wash ..................... 478

Kamiah, Idaho, Clearwater River at...... 452-453

Kaweah River near Three Rivers, Calif... 243 

Kelso, Wash., Coweman River near ...... 485

Kelvin, Ariz., Gila River at............. 193-195

Kern River below Isabella Dam, Calif..... 239

near Bakersfield, Calif................ 240

near Kernville, Calif.................. 238

Kern River basin ....................... 238-241

Kernville, Calif., Kern River near ....... 238

Keswick, Calif., Sacramento River at .... 306

King Hill, Idaho, Snake River at.......... 434-435

Kings River at Peoples Weir, near

Kingsburg, Calif ................... 246

below North Fork, Calif............... 244

below Pine Flat Dam, Calif............ 245

Kingsburg, Calif., Kings River near...... 246

Kiona, Wash., Yakima River at.......... 427-429

Klamath River, at Somesbar, Calif....... 384-385

below Fall Creek, near Copco, Calif.... 383

near Klamath, Calif .................. 397

Klamath River basin .................... 383-397

Kiickitat River near Pitt, Wash .......... 465

Knights Ferry, Calif., Stanislaus River

near .............................. 266

Knights Landing, Calif., Sacramento River

at................................. 322-324

Sacramento Slough near................ 325

Knightsen, Calif., Rock Slough near ...... 288

Kosmos, Wash., Cowlitz River near...... 480

La Grange, Calif., Tuolumne River

near .............................. 260

Lake Mead near Boulder City, Nev ....... 176-180

Lake Pleasant Dam, Ariz., Agua Fria

River below........................ 202-203

Lake Tahoe (north end), Tahoe Vista,

Calif .............................. 219

(south end), Bijou, Calif............... 219

(west side), Tahoe City, Calif.......... 219

Lakeport, Calif., Clear Lake at.......... 350

Lane ha Plana, Calif., Mokelumne River at 290 

Landsburg, Wash., Cedar River near .... 413

Lebam, Wash., Willapa River at ........ 399

Lees Ferry, Ariz., Colorado River at.... 139-145

Paria River at ....................... 146-149

Lewiston, Calif., Trinity River at........ 386-387

Lily, Colo., Little Snake River near...... 70-72

Lindsay Slough near Rio Vista, Calif...... 356

Linwood, Utah, Henrys Fork at .......... 58-60

Literature cited ........................ 21

Little Colorado River at Cameron,

Ariz .............................. 155-160

at Woodruff, Ariz..................... 150-154

Little Colorado River basin.............. 150-161

Little Potato Slough near Terminous,

Calif .............................. 296

Little Snake River near Lily, Colo ....... 70-72

Littlefield, Ariz., Virgin River at ....... 170-175

Lochsa River near Lowell, Idaho ......... 448-449

Longview, Wash., Abernathy Creek

near .............................. 486

Los Gatos Creek at Los Gatos, Calif ..... 229

Los Molinas, Calif., Mill Creek near..... 313

Lowell, Idaho, Lochas River near ........ 448-449

Lower Lake, Calif., Cache Creek near ... 351

North Fork Cache Creek near .......... 352

Lynndyl, Utah, Sevier River near ........ 212-214

M

Mad River near Arcata, Calif...........

near Forest Glen, Calif ..............

Madras, Or eg., Deschutes River near....

Madrone, Calif., Coyote Creek near. 

Magnesium ...........................

Mandeville Island, Calif., Old River

at................................

Manganese............................

Marblemount, Wash., Cascade River at.. 

Skagit River near....................

Mar stem, Wyo., Blacks Fork near.......

Marysville, Calif., Yuba River at.......

Maybell, Colo., Yampa River near ......

Mayfield, Wash., Cowlitz River near 

McCann, Calif., Eel River at...........

McCloud River above Shast a Lake,

Calif .............................

Mendota, Calif., Delta-Mendota Canal

near .............................

San Joaquln River near ...............

Merced River at Exchequer, Calif.......

near Stevinson, Calif ................

Metolius River near Grandview, Oreg....

Michigan Bar, Calif., Cosumnes River

at................................

M. L D. Lateral No. 5 spillway near

Modesto, Calif ...................

Middle Fork American River near

Auburn, Calif .....................

Middle Fork Cottonwood Creek near

Cottonwood, Calif .................

Middle Fork Eel River at Dos Rios,

Calif .............................

Middle Fork Feather River below Sloat,

Calif .............................

Middle Fork Willamette River, at Jasper,

Oreg .............................

below North Fork, near Oakridge,

Oreg .............................

near Dexter, Oreg...................

Middle River, Calif., Old River near ....

Middle Santiam River at mouth, near

Foster, Oreg......................

Mill Creek at mouth, near Los Molinos,

Calif .............................

Mineral constituents in solution .........

Mineral Creek at Kelvin, Ariz ..........

near Mineral, Wash .................

Mineral, Wash., Mineral Creek near ....

Miranda, Calif., South Fork Eel River

near .............................

Modesto, Calif., M. L D. Lateral

near .............................

San Joaquin River near ...............

Moenkopi Wash near Tuba, Ariz ........

Mokelumne River at Lancha Plana,

Calif .............................

at Woodbridge, Calif.................

near Clements, Calif.................

Montgomery Creek, Calif., Pit River

near..............................

Morenci, Ariz., Willow Creek near......

Morgan Hill, Calif., Uvas Creek near....

Morton, Wash., West Fork Tilton River

near..............................

Mossdale, Calif., San Joaquin River at ..

495 

Page

381-382

381-382

461

231

10

419 

418

55-57 

333

64-69 

482 

374

304-305

283

251

257

258

460

294

263-264 

362, 363

359 

379, 380

361

469

466

467

287

474

313 

9-13 

207 

407 

407

375-376

263-264 

265 

161

290

291-293 

298

302-303 

190 

224

481

274

N

Napa River near St. Helena, Calif....... 364-366

National, Wash., Nisqually River near... 406

Niagara, Oreg., North Santiam River at . 473

Nicolaus, Calif., Feather River at ...... 335-337

Niles, Calif., Alameda Creek

near.............................. 232-236

Nisqually River near National, Wash..... 406

Nitrate ............................... 12
496 INDEX

Page

352

244

221

416

473

North Fork Cache Creek near Lower

Lake, Calif ........................

North Fork, Calif., Kings River below ... 

North Fork Matiltja Creek at Matilija

Hot Springs, Calif ..................

North Fork Stillaguamish River near

Darrington, Wash ..................

North Santiam River at Niagara, Oreg ....

below Boulder Creek, near Detroit,

Oreg .............................. 471

Notus, Idaho, Boise River at............. 439-440

Oak Creek near Cornville, Ariz .......... 198

Oakridge, Oreg., Middle Fork Willamette

River near......................... 466

Old River, at Clifton Court Ferry, Calif .. 284 

at Mandeville Island, Calif............. 289

at Or wood Bridge, near Middle River 

Calif .............................. 287

at south tip of Fabian Tract, near Tracy, 

Calif .............................. 278

Oroville, Calif., Feather River near...... 326-330

Ouray, Utah, Green River near .......... 83-87

Oxbow, Oreg., Snake River at ........... 441-442

Oxygen consumed....................... 13

Pacific slope basins, in California........ 221-398

in Oregon ............................ 489-492

in Oregon and lower Columbia River

basin.............................. 457-492

in Washington and upper Columbia

River basin ........................ 399-429

north of Columbia River ............... 399-419

Pajaro River at Chittenden, Calif......... 225

Palmer, Wash., Green River near........ 408-411

Palo Verde Dam, Ariz.-Calif., Colorado

River below........................ 186-187

Paria River at Lees Ferry, Ariz ......... 146-149

Parker Dam, Ariz. -Calif., Colorado

River below........................ 185

Percent sodium ........................ 15-16

Pilchuck Creek near Bryant, Wash ....... 417

Pine Flat Dam, Calif., Kings River

below.............................. 245

Pit River near Canby, Calif.............. 358

near Montgomery Creek, Calif......... 302-303

Pitt, Wash., Klickitat River near......... 465

Pleito Creek near Grapevine, Calif....... 241

Pomeroy, Wash., Snake River near....... 454-456

Porterville, Calif., Tule River near...... 242

Potlatch, Wash., Skokomish River

near............................... 403

South Fork Skokomish River near....... 401

Vance Creek near..................... 402

Weaver Creek near ................... 405

Potter Valley powerhouse, Calif., East

Fork Russian River at............... 368

Powell ranger station, Idaho, Warm

Springs Creek near.................. 446,447

Powers, Oreg., South Fork Coquille

River near......................... 490

Price River at Woodside, Utah ........... 88-90

Properties and characteristics of water ... 13-16 

Publications............................ 17-19

Purdy Creek near Union, Wash........... 404

Put ah Creek near Winters, Calif ......... 354

Pyramid and Winnemucca Lakes basin .... 219-220

Rainbow, Oreg., South Fork McKenzie

River near ......................... 470

Handle, Wash., Cispus River near ....... 479

Page

RandLett, Utah, Duchesne River near ..... 77-79

Redding, Calif., Sacramento River near... 307 

Rexburg, Idaho, Henrys Fork near ....... 433

Rindge Tract, Calif., Stockton Ship

Channel on ......................... 277

Rio Puerco west of Gallup, N. Mex....... 161

Rio Vista, Calif., Linds ay Slough near.... 356

Sacramento River near ................ 357

Rock Creek near Illahe, Oreg ............ 489

Rock Slough near Knight sen, Calif........ 288

Rogue River at Grants Pass, Oreg........ 491-492

Rufus, Oreg., Columbia River near....... 463-464

Russian River, at Guerneville, Calif...... 373

at Ukiah, Calif ....................... 370

near Healdsburg, Calif-............... 372

near Hopland, Calif................... 371

Russian River basin.-................... 368-373

Rye Patch, Nev., Humboldt River near 216-218

S

Sacramento, Calif., American River at... 341 

Sacramento River at Bend, Calif ......... 310-312

at Butte City, Calif ................... 317-319

at Delta, Calif........................ 300-301

atKeswick, Calif..................... 306

at Knights Landing, Calif.............. 322-324

at Sacramento, Calif.................. 342-348

at Snodgrass Slough, near Courtland,

Calif .............................. 355

near Hamilton City, Calif ............. 315

near Red Bluff, Calif.................. 361,363

near Redding, Calif................... 307

near Rio Vista, Calif.................. 357

Sacramento River basin ................. 300-363

Sacramento Slough near Knights Landing,

Calif.............................. 325

St.Helena, Calif., Napa River near ....... 364-366

Salem, Oreg., Willamette River at....... 475-476

Salmon River near Shoup, Idaho .......... 443-444

Salt River at Stewart Mountain Dam, Ariz . 196-197 

Salyer, Calif. .South ForkTrinity River near 388-391 

San Francisquito Creek at Stamford

University, Calif................... 228

San Joaquin River, at Antioch, Calif...... 297

at Fremont Ford Bridge, Calif......... 254-256

at Garwood Bridge, near Stockton,

Calif .............................. 275

at Maze Road Bridge, near Modesto, 

Calif .............................. 265

at Mossdale, Calif.................... 274

below Friant, Calif ................... 247

near Biola, Calif ..................... 246-250

near Dos Palos, Calif................. 252

near Grayson, Calif................... 259

near Mendota, Calif................... 251

near Vernalis, Calif .................. 268-273

San Joaquin River basin ................. 247-299

San Juan River, at Bloomfield,

N. Mex............................ 116-120

at Shiprock, N. Mex .................. 127-132

near Archuleta, N. Mex............... 110-115

near Bluff, Utah ...................... 133-138

San Juan River basin ................... 110-138

San Lorenzo River at Big Trees, Calif.... 227

San Rafael River near Green River,

Utah .............................. 97-102

San Simon Creek near Solomon, Ariz ..... 191-192

Scotia, Calif., Eel River at.............. 377-378

Sediment............................ 4-6,16-17

Sespe Creek near Fillmore, Calif ..... 221

Sevier River near Lynndyl, Utah ...... 212-214

Shasta Lake, Calif., McCloudRiver

above .......................... 304-305

Shiprock, N. Mex., San Juan River at . 127-132 

Shoup, Idaho, Salmon River near ...... 443-444

Silica .............................. 9
INDEX 497

Page

Silver Lake, Wash., Toutle River near .. 483 

Skagit River above Alma Creek, near ....

Marblemount, Wash ............... 418

Skokomish River near Potlatch, Wash ... 403 

Skokomish River basin ................. 401-405

Smartsvllle, Calif., Yuba River near .... 332

Smith River near Crescent City, Calif ... 398 

Snake River, at Central Ferry, near

Pomeroy, Wash ................... 454-456

at King Hill, Idaho ................... 434-435

at Oxbow, Oreg ..................... 441-442

near Heise, Idaho ................... 430-432

Snake River basin ..................... 430-456

Sodium-adsorption-ratio................ 16

Sodium and potassium.................. 10-11

Solomon, Arlz., San Simon Creek

near.............................. 191-192

Somesbar, Calif., Klamath River at..... 384-385

Sonoma Creek at Boyes Hot Springs,

Calif............................. 367

Soquel Creek at Soquel, Calif ........... 226

South Fork American River near Lotus,

Calif ............................. 362, 363

South Fork Clearwater River near Elk

City, Idaho........................ 450-451

South Fork Coquille River near Powers,

Oreg............................. 490

South Fork Cottonwood Creek near

Cottonwood, Calif ................. 359

South Fork Eel River near Miranda,

Calif ............................. 375-376

South Fork McKenzie River near Rainbow,

Oreg ............................. 470

South Fork Skokomish River near

Potlatch, Wash.................... 401

South Fork Trinity River near Salyer,

Calif ............................. 388-391

South Honcut Creek near Bangor,

Calif............................. 331

Specific conductance ................... 14

Stanislaus River at Tullock Damsite,

near Knights Ferry, Calif .......... 266

near mouth, near Vernalis, Calif ..... 267

Stevinson, Calif., Bear Creek near...,,.. 253 

Merced River near................... 258

Stewart Mountain Dam, Arlz., Salt

River at .......................... 196-197

Stillaguamish River basin .............. 415-417

Stockton, Calif., San JoaquLn River

near.............................. 275

Stockton Ship Channel near Rlndge Pump

on Rindge Tract, Calif ............. 277

Stony Creek near Hamilton City, Calif ... 359 

Streamflow ........................... 17

Sulfate ............................... 11

Susan River at Susanville, Calif......... 220

Tecuya Creek near Wheeler Ridge,

Calif ............................

Temperature ........................

Terminous, Calif., Little Potato Slough 

near ............................

241

4,13

296 

The Great Basin ...................... 212-220

Three Rivers, Calif., Kaweah River near 243 

Topock, Arlz., Colorado River near..... 184

Toutle River near Silver Lake, Wash .... 483

Tracy, Calif., Delta-Mendota Canal near 279 

Old River near ...................... 278

Tracy pumping plant, Calif., DeltaMendota Canal near................ 280-282

Page

Trinity River at Lewiston, Calif ........ 386-387

near Hoopa, Calif.................... 392-396

Troy, Oreg., Grande Ronde River at.... 445

Truckee River at Farad, Calif .......... 220

near Truckee, Calif.................. 220

Tulare Lake basin ..................... 242-246

Tule River near Porterville, Calif ...... 242

Tuolumne River above La Grange Dam,

near La Grange, Calif.............. 260

at Hickman, Calif.................... 261

at Tuolumne City, Calif .............. 262

Twin Springs, Idaho, Boise River near... 436-438

U

Ukiah, Calif., Russian River at......... 370

Union, Wash., Purdy Creek near........ 404

Upper Columbia River basin ............ 420-429

Uvas Creek near Morgan Hill, Calif ..... 224

Van Duzen River near Bridgeville,

Calif ............................

Vance Creek near Potlatch, Wash ......

Verde River below Bartlett Dam, Ariz ..

Vernalis, Calif., San Joaquin River

near.............................

Stanislaus River near................

Vina, Calif., Deer Creek at ...........

Virgin River, at Littlefleld, Ariz.......

Virgin River basin....................

W

Wallace River at Gold Bar, Calif........

Walnut Creek at Walnut Creek, Calif.....

Walnut Grove, Calif., Delta CrossChannel near ......................

Warm Springs Creek above Jerry

Johnson Hot Springs, near Powell 

ranger station, Idaho..............

near Powell ranger station, Idaho ....

Watson, Utah, White River near........

Weaver Creek near Potlatch, Wash .....

West Branch Grays River near Grays 

River, Wash .....................

West Fork Tilton River near Morton, 

Wash............................

Wheatland, Calif., Bear River near.....

White River near Watson, Utah ........

Wlllamette River at Salem, Oreg.......

Wlllamette River basin................

Willapa River at Lebam, Wash.........

Willow Creek near Double Circle Ranch, 

near Morenci, Ariz...............

Winters, Calif., Putah Creek near .....

Woodbridge, Calif., Mokelumne River at

Woodruff, Ariz., Little Colorado River 

at.« =..........................,.

Woodside, Utah, Price River at........

Yakima River at Kiona, Wash..........

Yampa River near Maybell, Colo .......

Yolo Bypass near Woodland, Calif......

Yuba River at Marysville, Calif........

near Smartsville, Calif .............

Yuma, Ariz., Colorado River at .......

Yuma Main Canal below Colorado River 

siphon, at Yuma, Ariz ............

379,380

402

199-201

268-273 

267 

314

170-175 

170-175

414

237

295

446

447

80-82

405

488

481

334

80-82

475-476

446-476

399

190

354

291-293

150-154 

88-90

427-429 

64-69

362, 363 

333 

332 

208

211

* U. S. GOVERNMENT PRINTING OFFICE : 1961 O - 602548