Quality of Surface 

Waters for Irrigation 

Western United States 

1955

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

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1465

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

FRED A. SEATON, Secretary

GEOLOGICAL SURVEY 

Thomas B. Nolan, Director

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

Washington 25, D. C.
PREFACE

This report was prepared by the Geological Survey in cooperation with other State and Federal Agencies by personnel of the 

Water Resources Division under the direction of:

C. G. Paulsen ............... Chief Hydraulic Engineer

S. K. Love ............. Chief, Quality of Water Branch

District Supervisors (Quality of Water)

P. C. Benedict........................ Lincoln, Nebr.

J. W. Guerin ...................... Fayetteville, Ark.

T. B. Dover ................... Oklahoma City, Okla.

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

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

Burdge Irelan .......................... Austin, Tex.

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

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

Ill
CONTENTS

Page

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

Acknowledgements.................................... 5

Collection of samples ................................. 6

Examination of samples............................... 6

Reporting of data ..................................... 8

Explanation of tables .................................. 8

Discussion of results ................................. 9

Hudson Bay and upper Mississippi River basins ........ 9

Missouri River basin................................ 12

Lower Mississippi River basin ....................... 15

Western Gulf of Mexico basin ........................ 15

Colorado River basin................................ 16

The Great Basin .................................... 17

Pacific Slope basins in California. .................... 18

Pacific Slope basins in Washington and upper Columbia .

River basin ...................................... 19

Snake River basin .................................. 19

Pacific Slope basins in Oregon and lower Columbia River

basin............................................. 19

Criteria of water quality............................... 20

Selected references ................................... 22

Quality of surface waters for irrigation ................. 24

Part 5-Hudson Bay and upper Mississippi River basins . 24

Red River of the North basin....................... 24

Sheyenne River near Warwick, N. Dak............ 24

Souris River near Westhope, N. Dak.............. 26

Part 6-Missouri River basin ......................... 28

Missouri River main stem ......................... 28

Missouri River near Williston, N. Dak............ 28

Missouri River at Pierre, S. Dak ................ 30

Missouri River at Nebraska City, Nebr............ 32

Yellowstone River basin ........................... 34

Yellowstone River at Billings, Mont .............. 34

Yellowstone River near Sidney, Mont ............. 36

Bighorn River at Bighorn, Mont.................. 38

Tongue River at Miles City, Mont ................ 40

Powder River near Locate, Mont................. 42

Platte River basin ................................ 45

North Platte River below Guernsey Reservoir, Wyo 45

Platte River at Brady, Nebr...................... 47

V
VI CONTENTS

Quality of surface waters for irrigation--Continued 

Missouri River basin Continued

Platte River basin--Continued Page 

Supply Canal (Tri-county diversion) near Maxwell,

Nebr........................................ 49

South Platte River at Julesburg, Colo............. 51

Kansas River basin ............................... 53

Republican River above Medicine Creek at

Cambridge, Nebr............................. 53

Part 7-Lower Mississippi River basin ................ 55

Arkansas River basin ............................. 55

Arkansas River below John Martin Reservoir, Colo 55

Arkansas River at Arkansas City, Kans........... 57

Arkansas River at Ralston, Okla ................. 60

Cimarron River at Perkins, Okla ................ 64

Arkansas River at Van Buren, Ark............... 69

Canadian River near Whitefield, Okla............. 77

Red River basin.................................. 83

Red River at Denison Dam near Denison, Tex ..... 83

Part 8-Western Gulf of Mexico basins ................ 84

Sabine River basin................................ 84

Sabine River near Ruliff, Tex.................... 84

Neches River basin ............................... 87

Neches River at Evadale, Tex ................... 87

Trinity River basin ............................... 89

Trinity River at Romayor, Tex .................. 89

Brazos River basin ............................... 91

Brazos River at Richmond, Tex.................. 91

Colorado River basin .............................. 93

Colorado River at Austin, Tex................... 93

Colorado River at Wharton, Tex ................. 94

Guadalupe River basin ............................ 95

Guadalupe River at Victoria, Tex ................ 95

Nueces River basin ............................... 97

Nueces River near Matins, Tex.................. 97

Rio Grande basin ................................. 98

Rio Grande above Culebra Creek near Lobatos,

Colo ........................................ 98

Rio Grande at Otowi Bridge near San fldefonso,

N. Mex...................................... 100

Rio Grande conveyance channel at San Marcial,

N. Mex...................................... 102

Rio Grande floodway at San Marcial, N. Mex ...... 104

Rio Grande below Elephant Butte Outlet, N. Mex... 105

Rio Grande near El Paso, Tex................... 106

Rio Grande below Old Fort Quitman, Tex ......... 107

Rio Grande at Upper Presidio, Tex............... 108

Rio Grande at Langtry, Tex ..................... 109
CONTENTS VII

Quality of surface waters for irrigation--Continued 

Western Gulf of Mexico basins- -Continued

Rio Grande basin--Continued Page

Rio Grande at Laredo, Tex ....................... 110

Rio Grande at Chapeno, Tex ...................... Ill

Pecos River below Alamogordo Dam, N. Mex....... 112

Pecos River near Artesia, N. Mex ................ 114

Pecos River below Red Bluff Dam, near Orla, Tex .. 116

Pecos River near Shumla, Tex .................... 117

Part 9-Colorado River basin .......................... 118

Colorado River main stem .......................... 118

Colorado River near Glenwood Springs, Colo ....... 118

Colorado River near Cisco, Utah .................. 120

Colorado River at Lees Ferry, Ariz ............... 122

Colorado River near Grand Canyon, Ariz........... 124

Colorado River below Hoover Dam, Ariz-Nev....... 126

Diversions and return flows at and below Imperial Dam 128 

Yuma Main Canal below Colorado River siphon at

Yuma, Ariz................................... 128

Gunnison River basin............................. 130

Gunnison River near Grand Junction, Colo........ 130

Green River basin ............................... 132

Green River at Green River, Utah ............... 132

San Juan River basin ............................. 134

San Juan River near Archuleta, N. Mex .......... 134

San Juan River near Blanco, N. Mex............. 135

San Juan River near Bluff, Utah ................. 136

Little Colorado River basin ....................... 138

Little Colorado River at Cameron, Ariz.......... 138

Virgin River basin ............................... 139

Virgin River at Littlefield, Ariz................. 139

Gila River basin ................................. 141

Gila River at Kelvin, Ariz ...................... 141

Gila River below Gillespie Dam* Ariz............ 143

Salt River at Stewart Mountain Dam, Ariz ........ 145

Verde River below Bartlett Dam, Ariz ........... 147

Agua Fria River below Lake Pleasant Dam, Ariz.. 149

Part 10-The Great Basin ............................. 150

Sevier Lake basin................................ 150

Sevier River near Lynndyl, Utah ................ 150

Humboldt River basin ............................ 152

Humbpldt River near Rye Patch, Nev ............ 152

Part 11-Pacific Slope basins in California .............. 153

San Joaquin River basin .......................... 153

San Joaquin River near Biola, Calif.............. 153

San Joaquin River near Vernalis, Calif........... 155

Mokelumne River at Woodbridge, Calif........... 157
VIII CONTENTS

Quality of surface waters for irrigation--Continued

Pacific Slope basins in California- -Continued Page

Sacramento River basin ........................... 159

Sacramento River at Knights Landing, Calif....... 159

Feather River at Nicolaus, Calif ................. 162

American River at Fair Oaks, Calif .............. 164

Part 12-Pacific Slope basins in Washington and upper

Columbia River basin ............................. 166

Upper Columbia River basin ....................... 166

Columbia River main stem ........................ 166

Columbia River at International Boundary ......... 166

Columbia River at Grand Coulee Dam, Wash ...... 168

Yakima River basin. .............................. 170

Yakima River at Kiona, Wash.................... 170

Part 13-Snake River basin........................... 172

Snake River main stem ........................... 172

Snake River near Heise, Idaho ................... 172

Snake River at King Hill, Idaho .................. 174

Snake River near Clarkston, Wash ............... 176

Boise River basin ................................ 178

Boise River at Notus, Idaho ..................... 178

Part 14-Pacific slope basins in Oregon and lower

Columbia River basin ............................. 181

Columbia River main stem ........................ 181

Columbia River at Maryhill Ferry near Rufus,

Oreg. ....................................... 181

Willamette River basin............................ 183

Willamette River at Salem, Oreg................. 183

Rogue River basin ................................ 185

Rogue River at Grants Pass ..................... 185

Index............................................... 187

Plate 1. Recommended stations for irrigation-quality

network in Western United States............ Facing
QUALITY OF SURFACE WATERS

FOR IRRIGATION, 

WESTERN UNITED STATES, 1955

INTRODUCTION

The records of chemical analyses, other physical measurements, and discharge given in this report comprise the fifth annual 

compilation of data for 78 irrigation network stations in operation 

west of the Mississippi River.

Geological Survey Water Supply Papers 1264 and 1362, the annual compilations for water years 1951 and 1952, respectively, 

describe briefly the development of this series of reports. In 

summary, there is an expressed need for comprehensive continuing information about the chemical quality of surface waters used 

for irrigation and the changes resulting from the drainage of irrigated lands.

In recognition of this problem the Subcommittee on Hydrology, 

Federal Interagency River Basin Committee (now called Interagency Committee on Water Resources) on February 6, 1950, 

approved a list of 106 network stations on streams in Western 

United States at which water samples were to be collected and analyzed with particular reference to the use of these stream waters 

for irrigation. These stations, with pertinent information about 

periods of operation, are shown in the following table. Of the 106 

stations selected, 39 were already being operated by the Geological Survey and 7 by the International Boundary and Water Commission. From the remaining stations on the list, 30 were selected for activation by the U. S. Geological Survey during the 

fiscal year 1951. In addition, 3 stations previously operated in 

connection with other programs and scheduled to be discontinued 

were to be included in the list to be operated by the Geological 

Survey (the Subcommittee amended the list on October 2, 1952, 

to include the three additional stations, bringing the recommended 

number of irrigation network stations to a total of 109).

It was contemplated that the network stations would be located 

at stream-flow gaging stations and that the program of collecting 

and analyzing the samples and reporting the findings would be the

1
QUALITY FOR IRRIGATION, 1955

Irrigation-Quality Network Stations in Western United States 

[Selected by Subcommittee on Hydrology, Federal Interagency River Basin Committee, 1950]

No.

1

2

3

4 

5

6

7

7a 

8

9 

10

11 

12

13 

14

15 

16

17 

18 

I8a

19 

20

21 

22

23 

23a 

24

25 

26

27

28

29 

30

31

32

33 

34 

35 

36

37 

38

39

40

41 

42

43

44

45 

46

47

48

49 

50

51

51a 

52

52a

Geological 

Survey 

Part

No.

5

6

7

8

Stream

Missouri River...............

Yellotostone River..........

Wind Riverb.. ....... .........

Tongue River................

Grand River c .. ..............

Cheyenne River ........... 

White River..................

James River.................. 

N. Platte River..............

N Platte River.............. 

Platte River..................

Diversion). 

South Platte River..........

Republican River........... 

Smoky Hill River............

Saline River 6 ................ 

Saline Riverf.. ...............

Arkansas River...............

Canadian River11 ............

Red River.....................

Washita River 1 ...... .........

Sabine River.................. 

Neches River... .............. 

Trinity River...... ........... 

San Jacinto RiverJ .........

Brazos River.. ....... ..........

Guadalupe River.............

Rio Grande... .................

Rio Grande....................

Rio Grande . ....... .........

Rio Grande m..... ............

Rio Grande m.. ............... 

Rio Grande 111 .. ...............

Rio Grande m' n.. ............

Rio Grande 111 ................. 

Rio Grandem' 0.. ............

Rio Grande m.... .............

Location

near Williston, N Dak...............

at Pierre, S Dak. ....................

at Nebraska City, Nebr.. .............

near Sidney, Mont.....................

below Boysen Dam, Wyo.............

at Miles City, Mont.. ................

near Wakpala, S. Dak................

near Eagle Butte, S. Dak............

near Huron, S. Dak...................

below Guernsey Reservoir, Wyo.... 

at Brady, Nebr..........................

at Julesburg, Colo.. ...... .............

Cambridge, Nebr. 

near Hardy, Nebr......................

near Wilson (or Russell), Kans...... 

at Tescott. Kans.......................

at Arkansas City, Kans...............

near Tascosa, Tex.. ...................

Denison, Tex.

near Ruliff, Tex....................... 

at Evadale, Tex...... ................. 

at Romayor, Tex. ....................

at Richmond, Tex............. .......

at Victoria, Tex.......................

Lobatos. Colo.

Udefonso, N. Mex. 

at San Marcial, N Mex. ...........

at Upper Presidio, Tex.. ........... .

at Laredo, Tex............. ........... 

at Roma, Tex.................. .......

at Chapeno, Tex......................

Date 

established

June 1954

Dec. 5, 1954

Oct. 3, 1950

Jan. 4, 1951 

Pec. 15, 1950

Jan. 3, 1951 

Jan. 1, 1951

Nov. 24, 1953 

Oct. 2, 1950

Jan. 4, 1951 

Jan. 4, 1951

Jan. 17, 1951

Jan. 17, 1951

Dec. 7, 1950 

Feb. 28. 1951 

Mar. 1, 1951

Oct. 1, 1945 

Dec. 22, 1950

Apr." " 3, "T 950 

Jan. 10, 1951

Oct. 8, 1951 

Jan. 1, 1950

Oct. 1, 1945

Oct. 1, 1949

Oct. 1, 1952

[une 2, 1948 

Sept. 1, 1946

May 1, 1944

Sept. 10 1946

Oct. 1. 1947 

Oct. 1, 1947 

Sept. 1, 1945 

Sept. 1, 1945

Sept. 1, 1945

Clft 1 1 04.7

Opt. 1, 1947

Anr 1 1 1 Q44

Sept. 1, 1945 

Oct. 1, 1947

Clft 11 1QAR

Oct. 23, 1947

July 1, 1948

1 Q<W

1930

1930

1935 

1945

1938

uly 1, 1955 

1944

uly 1 955
INTRODUCTION 3 

Irrigation-Quality Network Stations in Western United States Continued

No.

x.i

55

en

57

58

"\q

Cf\

61 

62 

63

64

c c

66

£ a

6

r»

68 

69 

70

71

72

71

74

7"\

76

77

7Q

79

on

81

82 

83 

84

84a

or

0/3

07

QO

89 

90

91

Q9

93 

04.

95 

96

Q7

qa

qq

100 

101

1 ft<l

104

105

106

Geological 

Survey 

Part 

No.

9

10

11

12

14

5

Stream

Pecos River................... 

Pecos River m> p.. ...........

Pecos River ................

Colorado River..............

Colorado River.............. 

Colorado River.............. 

Colorado River (Yuma 

Main Canal)

Green River..................

San Juan River............... 

Little Colorado River......

Sevier River..................

San Joaquin River.......... 

San Joaquin River..........

Diverting Canal) r.

American River............

Pend Oreille, River.......

Snake River................. 

Snake River.................

Boise River..................

Shevenne River............

Location

below Alamorgordo Dam,

N. Mex.

near Orla, Tex.. ...... ..................

near Glenwood Springs, Colo--......

near Cisco, Utah.......................

below Hoover Dam, Ariz. -Nev..... 

below Parker Dam, Calif.......... .. 

below Colorado River Siphon 

at Yuma, Ariz.

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

near Bluff, Utah.................... ... 

at Cameron, Ariz....... ..............

below Lake Pleasant Dam, Ariz.....

near Marysville, Utah................

below Friant Dam, Calif............

near Vernalis, Calif.................. 

at Antioch, Calif.....................

near Red Bluff, Calif................

at Fair Oaks, Calif...................

at Grand Coulee Dam, Wash......

near Metaline Falls, Wash.........

near Heise, Idaho.................... 

near Minidoka, Idaho............... 

at King Hill, Idaho..................

Oreg.

near Warwick. N Dak.............

Date 

established

June 26, 1937

July 1, 1937

July 1, 1937 

1935

Jan. 1, 1955

Oct. 1941

Oct. 1928 

Oct. 1, 1947

Oct. 1925

Oct. 1939 

Oct. 1942 

Oct. 1931

Oct. 1928 

Oct 1, 1945

Dec. 31 1954

Oct. 1929 

Jan. 17, 1951 

Dec. 1, 1950

Dec. 1, 1950

Dec. 9, 1950

Dec. 9, 1950

Dec. 1, 1950

Mar! "22,' "1951

Dec. 10, 1951

Mar. 1, 1951 

Mar. 1, 1951

Nov. 1952

Mar. 1, 1951

Feb. 26, 1951

Feb. 26, 1951

May 1, 1951 

Nov. 15, 1951

Nov. 25, 1950

Dec. 30, 1952

Jan. 8, 1953 

Mar. 27, 1951

Nov. 14, 1951

Nov. 21, 1950

Dec. 1, 1950

Dec. 1952

Feb. 1. 1951

Jan. 5, 1953

Jan. 8, 1951
QUALITY FOR IRRIGATION, 1955

Irrigation-Quality Network Stations in Western United States Continued

No.

Geological 

Survey 

Part

No.

Stream Location Date 

established

Stations added by Subcommittee, October 2, 1952

107

1 AO

109

6

9 Virgin River. at Little .Field, Ariz.... ................ July 1949

a Dropped from list Jan. 21, 1954. Replaced by station Wind River below Boysen Dam.

bDiscontinued Sept. 30, 1954.

cDiscontinued Nov. 20, 1953.

dDiscontinued Nov. 20, 1953.

e Dropped from list Oct. 3, 1952. Replaced by station at Tescott.

f Discontinued Sept. 30, 1953.

gDiscontinued Sept. 30, 1952. Replaced by station at Perkins.

^Discontinued Sept. 30, 1953.

iDropped from list Oct. 3, 1952.

jDropped from list Apr. 5, 1954.

^Discontinued Sept. 30, 1951.

m Operated by International Boundary and Water Commission.

nDiscontinued June 30, 1955. Replaced by station at Laredo.

oDiscontinued Jan. 31, 1955. Replaced by station at Chapeno.

PDiscohtinued Dec. 1954. Replaced by station near Shumla.

qDiscontinued Dec. 31, 1954. Replaced by station near Archuleta, N. Mex.

'Dropped from list Oct. 3, 1952. Replaced by station, San Joaquin River near Biola.

sDiscontinued Feb. 15, 1954.

responsibility of the Geological Survey. The scope of the chemical analyses would provide for the calculation of the salt burden 

of streams and in general would conform with the current Geological Survey standards for the comprehensive investigation of 

the chemical quality of surface waters.

The following criteria were recommended in the selection of 

the key network stations.

1. All recommended stations should be located on streams 

west of the main stern of the Mississippi River.

2. All proposed stations should relate primarily to irrigation 

although multiple-purpose needs which include irrigation may be 

considered.

3. All stations should be located at or near stream-flow gaging stations. The most nearly up-to-date list of gaging stations 

currently operated by the U. S. Geological Survey (which comprises all but a small percentage of all gaging stations) will be 

found in the most recently published Geological Survey watersupply papers for the areas involved.

4. Consideration should be given to the location of irrigation 

development areas that are now affecting or are likely to affect 

the chemical quality of the river water.

5. Only those stations should be proposed that are likely to reflect important changes in chemical quality over a period of years. 

Stations operated for relatively short periods (5 years or less),
GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1465 PLATE 1

EXPLANATION

Outline of principal drainage basin

46 

22

Quality-of-water station in operation, 1955 

Upper number refers to station index. Lower number refers to years of available chemical-quality records

Discontinued quality-of-water station

o96

Proposed quality-of-water station

RECOMMENDED STATIONS FOR IRRIGATION-QUALITY NETWORK IN WESTERN UNITED STATES
ACKNOWLEDGMENTS 0

as would be required for intensive studies of specific projects, 

should not in general be included.

Plate 1 is a plot of the recommended list of 109 network stations 

on streams in Western United States. The 78 stations in operation 

in 1955 are identified by a solid circle. The period of record, in 

years, is also shown at each of these stations. In a few instances 

the period of record differs from that obtained from the date established by the Subcommittee, as earlier records were included 

also. Proposed stations are identified by an open circle.

During the 1955 water year five network stations were started. 

They were the Souris River near Westhope, N. Dak., RioGrande 

at Laredo, Tex. , Rio Grande at Chapino, Tex. , Pecos River near 

Shulma, Tex. and San Juan River near Archuleta, N. Mex. Seven 

network stations were discontinued during the year including the 

Bighorn River at Thermopolis, Wyo. , Wind River below Boysen 

Dam, Wyo. , Rio Grande at Eagle Pass, Tex. , Rio Grande at Roma 

Tex. , Pecos River near Comstock, Tex. , Deschutes River at Moody 

near Biggs, Oreg. , and San Juan River near Blanco, N. Mex.

ACKNOWLEDGMENTS

Agencies that have each contributed to some part of the data 

published herein include: The Agriculture Research Service, and 

the Soil Conservation Service, U. S. Department of Agriculture; 

the Bureau of Reclamation, U. S. Department of the Interior; the 

Corps of Engineers, U. S. Department of the Army; the State engineers for each of the 17 Western States and for Louisiana and 

Arkansas, the State Boards of Health,' the El Paso, Tex. , Department of Water and Sewage; the Ministry of Hydraulic Resources 

of Mexico.

During 1954-55, the United States Section of the International 

Boundary and Water Commission operated the stream gaging stations for the following Rio Grande stations included in this report: 

El Paso, Fort Quitman, Upper Presidio, Langtry, Laredo, Chapeno 

and it operated the station Pecos River near Shulma, also. The 

Mexican Section operated the stream gaging stations on the main 

stem at Eagle Pass. Each section operated the gaging stations on 

tributary streams, floodways, and diversions within its own 

country.

Descriptive headings and discharge data for the seven stations 

operated by the International Boundary and Water Commission, 

were obtained from Water Bulletins 24 and 25 prepared jointly by 

the United States and Mexican Sections of the International Boundary and Water Commission. These publications contain stream
6 QUALITY FOR IRRIGATION, 1955

discharge and related data for 1954 and 1955. Analyses for seven 

Rio Grande main stem stations and for the Pecos River near 

Shulma, Tex. , were obtained from the U. S. Salinity Laboratory, 

Riverside, Calif.

Additional contributions of data have been made by individuals, 

corporations, and other State and Federal agencies, and their cooperation is acknowledged with appreciation.

COLLECTION OF SAMPLES

In accordance with the recommendation of the Subcommittee, 

where practicable, one sample was collected each day throughout 

the water year. In general, each sample was taken in an 8- or 

12-ounce glass bottle provided with a pressure-type or positiveseal closure to prevent escape of dissolved gases. Each sample 

was integrated in the vertical section of a stream usually at about 

midpoint of flow by lowering the open sample bottle to the bottom 

and returning it to the surface during the filling process.

At most stations the samples were collected by local residents 

hired for the purpose. The local sample collector recorded on 

each bottle the name of the stream, location, gage height (if practicable), water temperature, time of day, date, and collector's 

name or initials. Samples were shipped to the laboratory or 

picked up by technical personnel on a predetermined schedule. 

Visits were made periodically by technical personnel to check on 

sampling procedures.

EXAMINATION OF SAMPLES

Upon receipt of samples in the laboratory, they were recorded 

and stored away from direct sunlight until opened for analysis. 

Specific conductance was determined with a conductance bridge 

on each sample as soon as opened. These data provided a basis 

for compositing a series of daily samples, for complete analysis. 

In general, a minimum of three composites a month consisting 

of equal volumes of approximately 10 daily samples, were prepared 

for chemical analysis. Individual samples that showed differences 

in conductance of more than 30 percent of the mean for the period 

were not included in the composite, but were grouped separately 

for additional composite samples or analysis of the individual 

sample was made. For those stations where acceptable discharge 

values were reported with the samples, or could be obtained 

promptly from rating tables, samples were prepared by mixing 

volumes of individual samples in proportion to water discharge.
EXAMINATION OF SAMPLES '

The following series of 15 determinations (schedule 1) were 

made on all composite samples for all new network stations during 

the first year of operation: Silica, iron, calcium, magnesium, 

sodium, potassium, bicarbonate, carbonate, sulfate, chloride, 

fluoride, nitrate, boron, dissolved solids, and specific conductance. The following values were calculated from the analytical 

data: Dissolved solids in tons per acre-foot, dissolved solids in 

total tons, total hardness, noncarbonate hardness, and percent 

sodium.

It was further recommended by the Subcommittee that during the 

second and third years the following series of 11 determinations 

(schedule 2) would be made on all composite samples: Calcium, 

magnesium, sodium, bicarbonate, carbonate, sulfate, chloride, 

nitrate, boron, dissolved solids, and specific conductance. Hardness, noncarbonate hardness, percent sodium, total tons and tons 

per acre-foot would be calculated as in schedule 1.

For the 1955 data there were notable exceptions to the recommended schedules as outlined above. At some stations, where 

more complete data were needed for other uses, the number of 

constituents determined was increased. Conversely, some stations that had been in operation for several years prior to this 

project, during which time at least the minimum determinations 

in schedule 1 were completed, were immediately placed on a reduced analytical schedule.

In the fourth and succeeding years (unless significant changes 

become apparent) it was recommended that the following determinations (schedule 3) would be made on all composite samples 

as long as the program is in effect: Calcium and magnesium 

(either separately, or together by the recently developed ethylenediamine tetraacetic acid titration test for hardness), sodium, dissolved solids, and specific conductance. In addition, four complete 

analyses (schedule 1) would be made each year, one analysis to be 

made on a composite sample during each quarter. Certain additional determinations above these minimum requirements were 

to be made if deemed necessary to define widely varying characteristics of the stream water.

All laboratory determinations were to be made in accordance 

with standard procedures used by the Geological Survey. These 

procedures are based on methods found in authoritative publications on water analysis.
8 QUALITY OF IRRIGATION 1955

REPORTING OF DATA

In order to release the data in the form most widely used in the 

evaluation of irrigation waters, the results of analyses in this 

compilation are given in equivalents per million, rather than the 

conventional unit part per million. Some agencies that actively 

participate in irrigation water-quality investigations prefer to express results in milligrams per liter (mg/1) and milliequivalents 

per liter (meq/1). However, for all practical purposes where concentrations of dissolved solids are less than about 7, 000 parts 

per million, no correction for density of the water is necessary 

and the units reported in each method are considered to be synonymous.

If results are desired in parts per million they can be calculated 

by multiplying the reported values in equivalents per million by 

the chemical combining weights of the individual constituents. 

Pertinent physical data and water discharge are also included in 

the tables.

EXPLANATION OF TABLES

The tables of analyses beginning on page 24 include a brief descriptive heading summarizing the more pertinent features at each 

station as follows:

Location of station is given generally as the distance in land or 

river miles from a town or other political or geographic feature. 

In Survey practice the term "at" generally implies that the station 

is within a mile radius of the named town whereas "near" implies 

that it is beyond a mile radius.

Drainage area above the gaging station was obtained from the most 

recent published records of the annual reports of the Geological 

Survey on Surface Water of the United States, and from the International Boundary and Water Commission.

Records available are given for all periods during which samples, 

other than infrequent, were collected for chemical analyses. It 

does not include the periods for which discharge records are 

available.

Extremes for the current year and for the period of record are 

reported for specific conductance and percent sodium because of 

their widespread application in the evaluation of analyses of water 

used for irrigation. The results for specific conductance are 

based on the measurement made at the laboratory upon receipt of
DISCUSSION OF RESULTS 9

the sample from the field. Data for percent sodium were obtained 

from the composite-samples analysis.

Remarks include sources of data, additional explanation concerning the records, and offices where the records of chemical quality 

may be obtained.

Discharge records were obtained from the responsible Geological 

Survey Surface Water Branch offices except for the seven stations 

operated by the International Boundary and Water Commission. 

Discharge data are shown in acre-feet, calculated from the mean 

daily discharge in cubic feet per second by multiplying by the 

factor 1. 983.

Analytical values are reported in equivalents per million for cations 

and anions. The equivalent is the weight with reference to some 

standard (such as the combining weight either of oxygen, 8, or 

of hydrogen, 1. 008) of that quantity of an element, radical, or compound to complete a definite chemical reaction. An equivalent of 

an element or ion is exactly equal in combining power to one 

equivalent of another element or ion. As previously discussed, 

for concentrations of dissolved solids that are normally encountered in water for irrigation, an equivalent per million is equal 

to a milliequivalent per liter. Silica, which is considered to be 

present in the colloidal state, and boron, are reported in parts 

per million. Percent sodium is calculated as follows:

Na x 100

, where all constituents are reported in equivalents

Na+K+Ca+ Mg 

per million.

At the recommendation of the Subcommittee, sodium-adsorptionratio (SAR) is published for all network stations beginning October 

1952. The term is defined and described under "Sodium hazard" 

on page 21.

DISCUSSION OF RESULTS

Discharge data and dissolved-solids loads for stations operated 

in 1955 are summarized in the following table.

HUDSON BAY AND UPPER MISSISSIPPI RIVER BASINS

Red River of the North basin. Two stations were operated in the basin; 

Sheyenne River near Warwick, N. Dak. , and Souris River near 

Westhope, N. Dak. Runoff in the Upper Sheyenne River basin was 

about the same as in 1951 and 1954 and was greater than in 1952

489291 O-59-2
10 QUALITY FOR IRRIGATION. 1955

Summary of water discharge, and tonnages of dissolved solids Continued

Station Runoff 

(acre-feet)

Dissolved

Solids 

(tons per 

acre-foot)

Red River of the North basin

Sheyenne River near vVarwick, N Dak..................................... 36,800

Souris River near Westhope, N. Dak........................................ 459,400

Missouri River main stem

Missouri River near Mlliston, N. Dak...................................... 18,350,000

Missouri River at Pierre, S. Dak.............................. ............... 14,580,000

Missouri River at Nebraska City, Nebr...................................... 19, 870, 000

Yellowstone River basin

Yellowstone River at Billings, Mont......................................... 3,874,000

Yellowstone River near Sidney, Mont....................................... 6,506,000

Bighorn River at Bighorn, Mont.............................................. 2,178,000

Tongue River at Miles City, Mont........................................... 248, 500

Powder River near Locate, Mont.................................... ......... 309,200

Platte River basin

North Platte River below Guernsey Reservoir, iVyo...................... 637,600

Platte River at Brady, Nebr.................................................... 226,500

Supply Canal (Tri-County Diversion) near Maxwell, Nebr............. 930, 700

South Platte River at Julesburg, Colo....................................... 73,100

Kansas River basin

Republican River above Medicine Creek at Cambridge, Nebr........ 92,010

Arkansas River basin

Arkansas River below John Martin Reservoir, Colo...................... 248,500

Arkansas River at Arkansas City, Kans..................................... 468,200

Arkansas River at Ralston, Okla.............................................. 1,108,000

Cimarron River at Perkins, Okla........................... .................. 976,700

Arkansas River at Van Buren, Ark............................................ 9, 298, 580

Canadian River near Miitefield, Okla...................................... 1,883,000

Red River basin

Red River at Denison Dam near Denison, Tex............................ 2, 000,000

Sabine River basin

Sabine River near Ruliff, Tex................................................ 4,036,000

Neches River basin

Neches River at Evadale, Tex...................................... .......... 2, 280, 000

Trinity River basin

Trinity River at Romayor, Tex............................................... 2, 125,000

Brazos River basin

Brazos River at Richmond, Tex............................................... 1, 569, 000

Colorado River basin

Colorado River at Austin, Tex................................................ 956,900

Colorado River at Wharton, Tex............................................. 865, 700

Guadalupe River basin

Guadalupe River at Victoria, Tex..................................... ...... 270,800

Nueces River basin

Nueces River near Mathis, Tex............................................... 97,400

Rio Grande basin

Rio Grande above Culebra Creek near Lobatos, Colo................... 62,130

Rio Grande at Otowi Bridge near San Ildefonso, N. Mex............... 432, 000

Rio Grande Conveyance channel at San Marcial, N Mex............. 185,690

Rio Grande floodway at San Marcial, N. Mex............................ 72,190

Rio Grande below Elephant Butte Outlet, N. Mex............ ........... 211,800

Rio Grande near El Paso, Tex................................................. 69, 710

Rio Grande below Old Fort Quitman, Tex.......................... ....... 7,479

Rio Grande at Upper Presidio, Tex.......................................... 22, 730

Rio Grande at Langtry, Tex..................... .............................. 952, 900

Rio Grande at Laredo, Tex....................................... ............. ..............

Rio Grande at Chapeno, Tex.................................................. .............

Pecos River below Alamogordo Dam, N. Mex............................ 130,500

Pecos River near Artesia, N. Mex........................................... 321,100

Pecos River below Red Bluff Dam near Orla, Tex............ ........... 157,100

Pecos River near Shumla, Tex................................................ ..............

Colorado River main stem

Colorado River near Glenwood Springs, Colo............................. 1, 026, 000

Colorado River near Cisco, Utah............................................. 2, 629, 000

Colorado River at Lees Ferry, Ariz........................................... 7, 290..000

Colorado River near Grand Canyon, Ariz................................... /, 580, 000
DISCUSSION OF RESULTS 11

Summary of water discharge, and tonnages of dissolved solids Continued

Station

Runoff 

(acre-feet)

Dissolved

Solids 

(tons per 

acre-foot)

Colorado River main stem Continued

Colorado River below Hoover Dam, Ariz. -Nev....................

Diversions and Return Flows at and below Imperial Dam

Yuma Main Canal below Colorado River siphon at Yuma, Ariz.......

Gunnison River basin

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

Green River basin

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

San Juan River basin

San Juan River near Blanco, N Mex.................................

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

Sail Juan River near Bluff, Utah...............................................

Little Colorado River basin

Little Colorado River atCameron, Ariz..............................

Virgin River basin

Virgin River at Littlefield, Ariz........................................

Gila River basin

Gila River at Kelvio, Ariz...............................................

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

Salt River at Stewart Mountain Dam, Ariz.................. ......-.,

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

Aqua Fria River below Lake Pleasant Dam, Ariz...................

Sevier Lake basin

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

Humboldt River basin

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

San Joaquin River basin

Sao Joaquin River near Biola, Calif..................................

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

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

Sacramento River basin

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

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

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

Columbia River main stem

Columbia River at International Boundary...........................

Columbia River at Grand Coulee Dam, vVash......................

Yakima River basin

Yakima River at Kiona, »Vash.........................................

Snake River main stem

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

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

Snake River near Clarkston, vVash.............................. ......

Boise River basin

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

Columbia River main stem

Columbia River at Maryhill Ferry near Rufus, Oreg..............

vVillamette River basin

 Villamette River at Salem, Oreg.....................................

Rogue River basin

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

276,000

333,000

032,000

820, 000

493,700

965, 600

135, 500

229,400

122,500

581,800

155,400

15,070

116,500 

^19,470

85, 950

975,100

175,300

,073,000

,675,000

,428,000

,350,000

,790,000

2,222,000

129, 

15,

1,

091,000

845,000

890,000

279,400

600,000

020,000

635,000

1.06

1.11

1.13

.63

.71

3.18

.85 

2.00 

.96 

.50 

.35

2.33

1.90

.08

.48

a.06

.18

.10 

.07

.12 

.12

.20

.31 

.45 

.23

.58 

.14 

.07 

.10

a For period of sampling only. See individual station records and footnotes for additional 

description of discharge data used in computations of weighted averages.
12 QUALITY FOR IRRIGATION, 1955

and 1953. The percentage composition and the weighted average 

dissolved solids concentration were similar to those of previous 

years of chemical quality record.

The Souris River near Westhope station is being operated as 

part of the Missouri River basin program. It is included in this 

report because it is at a site recommended for inclusion in the 

network program by the Federal Inter-Agency River Basin committee, in 1950.

MISSOURI RIVER BASIN

Missouri River-main stem. The Missouri River has become a highly 

regulated stream. Reservoirs on the main stem that regulate flow 

and consequently influence the chemical quality of the water are 

Ft. Peck on the Upper Missouri River above Williston, Garrison 

which lies between Williston and Pierre, Ft. Randall and Gavins 

Point which lie between Pierre and Nebraska City.

In the 1955 water year the flow at Williston was about 125 percent of the average flow for the 26-year period 1928-54 and about 

13 percent more than the flow for the 1954 water year. The flow 

at Pierre was about 85 percent of the average flow for the 25-year 

period 1929-54 and about 15 percent less than the flow for the 1954 

water year. The flow at Nebraska City was about 78 percent ofthe average flow for the 24-year period 1929-53 and 11 percent 

lower than the flow for the 1954 water year.

In 1955 the Ft. Peck Reservoir greatly influenced the water 

quality at Williston. Much of the spring runoff in the Missouri 

River Valley was stored in Ft. Peck Reservoir until after the 

spring runoff from Ye How stone River Valley had passed Williston. 

In October, July, August, and September, when flow in the Yellowstone River was low, large flows were maintained at Williston by 

releases from Ft. Peck. About 4 million more acre-feet of water 

was released from Ft. Peck than entered. The release of this 

water from storage increased the water discharge and the dissolved solid load at Williston over the two previous years. The 

weighted average dissolved solids concentration at Williston was 

higher than in the previous years of record because the Yellowstone River contributed water with higher dissolved solids concentrations than usual.

Garrison Reservoir also had a considerable effect on water 

quality of downstream stations. Water in storage increased about 

4 million acre-feet during the water year. The impoundment of 

the water from upstream caused the water passing the downstream
DISCUSSION OF RESULTS 13

stations to be composed of proportionately more local runoff than 

in previous years. Water entering the Missouri River from tributaries in the Dakotas tends to high higher dissolved solids concentrations than water entering from tributaries in Montana and 

Wyoming. The load at downstream stations was decreased by the 

additional storage upstream. Also, between Williston and Pierre 

a noticeable loss of water to the ground-water table occurs which 

further decreases the load at downstream stations.

Ft. Randall Reservoir released about the same amount of water 

as it received so the effect on water quality was probably small. 

Gavins Point Reservoir began to impound water in September so 

the amount impounded was small and had only a small effect on 

water quality downstream.

The water quality is similar at the three sampling stations on 

the Missouri River. As in 1953 and 1954 a comparison of weighted 

averages for dissolved solids shows a slight increase in mineralization between Williston and Pierre and a decrease between Pierre 

and a decrease between Pierre and Nebraska City. The increase 

in mineralization probably is due to the influence of tributary 

streams in the Dakotas; the decrease probably is due to dilution by 

the Niobrara, Platte, and possibly the Big Sioux Rivers. The 

quality of the water was essentially the same as in 1953 and 1954.

Of the dissolved-solids load passing Williston in the 1955 water 

year, 39 percent came from the Yellowstone River basin and 61 

percent came from the Upper Missouri River basin. The dissolved 

solids load passing Pierre was 16 percent less than the load passing Williston principally because of the additional 4 million acrefeet of water kept in storage at Garrison Reservoir. A significant 

amount of the load was probably lost through inflow to the groundwater table between Williston and Pierre. Of the load passing 

Nebraska City, 75 percent came from the reach of the Missouri 

River above Pierre and 25 percent came from tributaries between 

Pierre and Nebraska City.

Yellowstone River basin. Runoff in the basin was less than for any 

previous year for which chemical quality records are available. 

Runoff from the basin above Billings was less than the 1951-54 

period, but runoff from the basin below Billings was more than 

the yearly runoff for the four years 1951 to 1954.

The dissolved-solids load at Sidney was higher than the loads 

in the 1953 and 1954 years; and lower than the loads in 1951 and 

1952, which were years of comparatively high water discharge. 

The increase in load was caused by increased loads in Bighorn, 

Tongue, and Powder Rivers. Weighted average concentrations of
14 QUALITY FOR IRRIGATION, 1955

dissolved solids were greater in 1955 than in 1953 and 1954 at the 

mainstem stations but were smaller at the Bighorn, Tongue, and 

Powder River stations. Twenty-five percent of the dissolvedsolids load at Sidney was contributed by the Yellowstone River 

basin above Billings, 51 percent by the Bighorn basin, 3 percent 

by the Tongue River basin, and 11 percent by the Powder River 

basin. Ten percent of the dissolved solids load at Sidney is assumed to have been contributedby minor tributaries and the Yellowstone Valley between Billings and Sidney.

Major reservoirs in operation in the basin are Buffalo Bill Reservoir in the Shoshone River basin and Bull Lake, Pilot Butte, and 

Boysen Reservoirs in the Wind River basin.

Platte River basin.~- Flow in the Platte River is affected by transbasin diversion, reservoirs (Seminoe, Pathfinder, Alcova, Guernsey, and McConaughy on the North Platte River; Elevenmile Canyon 

and Cheesman on the South Platte River), power developments, 

ground-water withdrawals, and diversions for and return flow 

from irrigation developments. The Platte River is utilized to 

such an extent that no flow is recorded in some reaches during 

parts of the year. For example, near Grand Island, Nebr., the 

river is dry for most of the summer. Water flowing past upstream 

stations sometimes does not reach the downstream stations; water 

flowing past downstream stations is frequently composed of proportionately large amounts of local inflow.

Runoff in the Platte River basin was very low during the 1955 

water year. The weighted average dissolved solids concentration 

of the water passing the station below Guernsey Reservoir increased over previous years of record, and the weighted average 

dissolved solids concentration of the water passing the Julesburg 

station decreased. Decreases in the weighted average dissolved 

solids concentration at the Brady and Supply Canal stations were 

due principally to the release of large amounts of relatively dilute water from McConaughy Reservoir during recent years.

Kansas River basin. Runoff at the station Republican River above 

Medicine Creek at Cambridge, Nebr., was small in 1955 although 

it was about 50 percent greater than in 1954. Major reservoirs 

above the station, include Bonny Reservoir on the South Fork 

Republican, Enders Reservoir on Frenchman Creek, and Swanson 

Lake on the main stem.

The quality of the water was essentially the same as in previous 

years. Regulation of flow by Trenton Dam (Swanson Lake), and 

Enders Reservoir tends to make the quality of the water uniform 

throughout the year. In 1955, about two-thirds of the flow past the 

sampling station came from Swanson Lake and Enders Reservoir.
DISCUSSION OF RESULTS 15 

LOWER MISSISSIPPI RIVER BASIN

Arkansas River basin. Runoff in the Arkansas basin of Okla. for the 

1955 water year was increased from the 1954 water year. The 

exception was che Canadian River near Whitefield which decreased 

slightly. However the runoff at this station for 1954 was affected 

by heavy local rainfall in the lower Canadian basin and this did not 

reflect average conditions for the State. Runoff in the Arkansas 

River above its junction with the Canadian River increased over 

100 percent from 1954 to 1955.

The increased runoff in the Arkansas basin caused a decrease 

in the concentrations of dissolved solids. Runoff for the Arkansas 

River at Ralston was nearly twice that of 1954 and the dissolved 

solids concentration decreased from 2. 27 to 1. 67 tons per acrefoot. Runoff for the Cimarron River at Perkins was more than 

four times that of 1954 and the dissolved solids concentration decreased from 5. 52 to 2. 82 tons per acre-foot.

There were wide daily variations in mineral concentrations for 

most streams. The weighted average dissolved solids concentration for the Cimarron River at Perkins was about one-half that 

of the 1953 and 1954 water years, both the maximum and minimum 

concentrations dissolved solids for the 3-year period of record 

occurred during the 1955 water year. Sodium-adsorption ratio 

values for this station ranged from a low of 3. 0 to a high of 98.

Runoff of the Arkansas River at Van Buren during the 1955 water 

year was 9. 3 million acre-feet, as compared to 6. 1 in 1954, 9.4 

in 1953, 19.4 in 1952, and 33.3 million acre-feet in 1951. This 

54 percent increase in water discharge over previous year was 

accompanied by an approximately 15 percent decrease in average 

concentration of dissolved solids. The percent sodium remained 

almost the same as the previous year.

WESTERN GULF OF MEXICO BASIN

In the western Gulf of Mexico basin, from the Sabine to the 

Nueces River, the runoff continued below average during the 1955 

water year, although at several stations flow was greater than in 

1954. Comparatively minor changes in weighted average dissolved 

solids concentrations occurred.

Rio GranJe basin. The total annual runoff over most of the Rio 

Grande basin was once again below average; however, heavy Octtober rains contributed enough water within most of the Pecos 

River valley to bring total runoff figures up to about average or
16 QUALITY FOR IRRIGATION, 1955

slightly above average. This storm runoff was generally of very 

good quality, accounting for some of the lowest dissolved-solids 

concentrations ever measured in that part of the Pecos River lying 

above Red Bluff reservoir.

The International Boundary and Water Commission water Bulletin 

No.25 reported the yearly volume of flow of the Rio Grande from 

El Paso to Falcon Dam was much below normal, varying from 

15 percent of normal at El Paso to 3 percent of normal at Fort 

Quitman and 63 percent of normal at Laredo. Below Falcon Dam, 

the flow in the Rio Grande was largely regulated by releases from 

Falcon Reservoir and at Chapeno gaging station, the flow was 107 

percent of the estimated normal.

The 1955 investigation of the quality of Rio Grande by the IB & 

WC extended from El Paso to Mercedes, Texas. The annual tonnage of salts, or dissolved solids, carried by the river was generally about one-half of normal, except for the reach from El Paso 

to Upper Presidio where it was much below normal.

At the Orla, Texas station on the Pecos River the runoff was 

75 percent of the 18-year average and the dissolved-solids concentration of 4. 56 tons per acre-foot was the lowest since the highflow years of 1941 and 1942.

COLORADO RIVER BASIN

In the Colorado River basin runoff was also below average. 

There were no significant trends of quality except that the salinity 

of water released from Lake Mead and sampled from the Yuma 

Main Canal at Yuma, Ariz. continued to increase. This trend has 

been observed for several years and is undoubtedly due to the 

continued drouth conditions in the Colorado River basin.

Colorado River main stem. A slight decrease in concentration of dissolved mineral constituents may be noted for the stations at Glenwood Springs, Colorado and near Cisco, Utah. This change in 

water quality reflects an increase in runoff as compared with the 

preceding year. Eighty-one percent of the annual runoff was represented by analyses for the station near Cisco. The concentration 

of dissolved constituents for the station below Hoover Dam remains 

relatively constant due to the leveling effect of Lake Mead.

Gunnison River basin. An increase in flow of about 50 percent is reflected by a 33 percent decrease in dissolved solids concentration 

as compared with the preceding water year.
DISCUSSION OF RESULTS 17

Green River basin. A slight increase in annual runoff as compared 

with the preceding year is reflected by an 8 percent decrease in 

dissolved solids concentration.

San Juan River basin. A considerable decrease in average concentration of dissolved mineral constituents and total loads may be 

noted with less than 1 percent increase in annual runoff.

Virgin River basin. The effects of intensive irrigation in the Upper 

Virgin River Basin are reflected by a 25 percent increase in average dissolved solids concentration. This increase was accompanied by a 10 percent decrease in percent sodium with less than 

1 percent decrease in annual runoff.

Gila River basin. The total runoff in the Gila River basin varied inconsistently from the long term averages, in some parts being 

above but in other parts being below average. This situation was 

due in part to "spotty" thunderstorm activity over the basin. Storm 

runoff during the month of August accounted for much of the total 

runoff, and the quality of water from this source was generally 

much better than average. The weighted average analysis for the 

station Gila River at Kelvin, Ariz. is not related to total discharge 

because the amount of water released from upstream San Carlos 

Reservoir is not consistently proportional to discharge from other 

sources. The quality of this storage water is quite variable which 

further affects the weighted average analysis of downstream flow.

THE GREAT BASIN

Sevier Lake basin. Relatively no change was noted in average dissolved solids concentration and percent sodium ih the heavily irrigated Sevier Lake basin. However, total loads for the 1955 water 

year were less than the preceding year. This may be attributed to 

a 12 percent decrease in annual runoff.

Humboldt River basin. The runoff from the Humboldt River near Rye 

Patch, Nevada was 80 percent less than that for the previous year. 

Flow was intermittent for the entire year, occurring mostly in the 

months of May through August. Ninety-two percent of the runoff 

was represented by analysis. The average dissolved solids concentration increased 88 percent. Total loads decreased by 64 

percent.
18 QUALITY FOR IRRIGATION, 1955

PACIFIC SLOPE BASINS IN CALIFORNIA

Flows at all stations in the San Joaquin River and Sacramento 

River basins were considerably lower during the 1955 water year 

than during the 1954 water year. Seasonal precipitation and runoff 

was below normal for the report period. In some areas precipitation was nearly 20 percent less than normal.

The quality of the streams deteriorated somewhat from the previous year. During the year the highest weighted average concentration (0. 48 ton per acre foot) observed was for the San Joaquin 

River near Vernalis, Calif. , and the lowest (0. 06 ton per acre foot) 

was for the Mokelumne River at Woodbridge, Calif.

Folsom Dam on the American River began operation during the 

1955 water year. The dam is located approximately 3. 5 miles upstream from the Fair Oaks station. It is too early to determine 

what effect the impounding will have on the quality of the water.

The flow of the Sacramento River is regulated by Shasta Dam, 

and the water of the San Joaquin River is impounded behind Friant 

Dam, a few miles upstream from the Biola station^ Both of these 

dams have been in operation for several years. A minimum flow 

is maintained in the Sacramento River by releases of water from 

Shasta Dam to control salinity in the lower reaches of the river.

The Sacramento and San Joaquin River channels are used in part 

for irrigation return flow. Because of the diluting effect of the 

American and Feather Rivers on the Sacramento, and the large 

releases from Shasta Dam for salinity control, the quality of water 

in the middle and lower reaches of the Sacramento River was better 

than in similar reaches of the San Joaquin River.

The major portion of the impounded San Joaquin River water is 

used to irrigate parts of the east side of the upper San Joaquin 

River valley north of Friant Dam and also south of Friant Dam 

along the east side of the Central Valley. This water is- replaced 

by a more concentrated Sacramento River water brought into the 

San Joaquin valley via the Delta-Mendota canal. As a result, the 

river below Friant Dam is largely irrigation return water of poor 

quality.
DISCUSSION OF RESULTS . 19 

PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLUMBIA RIVER BASIN

Columbia River main stem. The average salt concentration, in tons 

per acre-foot, and SAR values for the Columbia River at International Boundary were identical to those for the previous 2 years. 

The flow from 1953 through 1955 has been 98, 125, and 109 percent, respectively, of the mean annual discharge. Downstream at 

Grand Coulee Dam, Wash, the quality of river water also changed 

very little from the preceding year.

Yakima River basin. Slight increases in average SAR and salt concentrations occurred in the Yakima River at the Kiona, Wash. 

gaging station. However, the runoff decreased 28 percent with a 

18 percent decrease in salt load.

SNAKE RIVER BASIN

Snake River main stem. The Snake River at King Hill, Idaho had little 

variation from the prior year; SAR values were identical and 

water discharge and salt load were similar. Downstream at Clarkston, Wash, the Snake River water increased slightly in SAR value, 

0. 8 to 0. 9. A small increase in salt load over the prior year, 

was principally attributable to a corresponding increase in discharge.

Flow past the Heise station was 19 percent less than in 1954 

with a 7 percent increase in dissolved mineral concentration.

Boise River basin. Reduced runoff of the Boise River at Notus, Idaho 

in 1955 caused an increase in SAR values, and the weighted average 

salt concentration was almost twice the previous high value, which 

occurred in 1954.

PACIFIC SLOPE BASINS IN OREGON AND LOWER COLUMBIA RIVER BASIN

Columbia River main stem. Very little change in chemical properties 

of Columbia River water near Rufus, Oreg. was observed in 1955. 

The average specific conductance was 169 as compared to 167 

for the previous year. A decrease in discharge in 1955 was 

accompanied by a slight lowering of the average salt concentration to 0.14 tons per acre-foot; 0.02 tons below that reported 

for 1954.

Wiliamette River basin. Salinity of the Willamette River water remained very low in 1955. At Salem, Oreg. the river water had an 

average specific conductance of 56.
20 QUALITY FOR IRRIGATION 1955

Rogue River basin. The analysis of the water from the Rogue River 

at Grants Pass, Oreg. , showed no significant change from data 

reported in 1954. The SAR and average salt concentration were 

identical to those reported in the previous year.

CRITERIA OF WATER QUALITY

Many different classifications of water for irrigation appear in 

the literature; however, most of the development in this field has 

been made in the last 30 years. Scofield and Headley (1921) were 

among the first important contributors to water-quality criteria; 

they pointed out the hazards from the use of high-sodium water. 

A brief historical resume' of these early developments is given in 

Water-Supply Paper 1264, the first of this series of reports.

Although the above classifications have relied principally on 

specific conductance as the criterion for total salt concentrations, 

investigators generally place emphasis on the composition of the 

water, as indicated by the analysis of dissolved constituents in 

equivalents per million. For example, Eaton (1950) discusses 

precipitation of calcium and magnesium carbonate and its effects 

on the sodium percentage in the soil solution. Baton's suggestion 

of "residual sodium carbonate" in irrigation waters as related to 

the base exchange of the soil has assumed added importance in 

soil permeability studies.

Thorne and Thorne (1951) in developing a system for classifying 

Utah waters for irrigation used a diagram similar to that of Wilcox 

(1948) and designated categories by a series of numbers and letters: 

1A. ...... 5E. The numbers 1 to 5 denote increasing concentrations

of dissolved solids, and the letters A to E increasing sodium percentages in the water with increasing probabilities for developing 

alkali soil conditions. Class 1A water, in which specific conductance ranges from 0 to 750 micromhos and the percent sodium from 

0 to an approximate maximum of 70, can be used safely on most 

soils. Class 5E waters, those having specific conductance greater 

than 5, 000 michromhos and percent sodium of about 90 and above, 

are generally unsatisfactory for irrigation.

The United States Salinity Laboratory Staff (1954) recently released a classification that incorporates many of the desirable 

features of the early classifications together with more recent 

developments. Empirical equations are used in developing a diagram for the classification of irrigation waters. Although the 

classification embodies both research and field observations, it 

is tentative and should be used for general guidance only.
CRITERIA OF WATER QUALITY 21

A. Salinity hazard.

Waters are divided into four classes: low salinity, medium salinity, high salinity, and very high salinity, the dividing 

points between classes being 250, 750, and 2, 250 micromhos per 

centimeter. They range from water that can be used for irrigation 

of most crops on most soils to that which is not suitable for irrigation under ordinary conditions.

B. Sodium hazard

The Salinity Laboratory introduced the term sodiumadsorption-ratio (SAR), a ratio for irrigation waters and soil extracts used to express the relative activity of sodium ions in exchange reactions with the soil. This ratio is expressed by the 

equation:

SAR = Na+

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

waters). It has more significance than percent sodium for use as 

an index of the sodium or alkali hazard of the water because it 

relates more directly to the adsorption of sodium by the soil.

Waters are divided into four classes with respect to sodium 

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

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

of 100 micromhos per centimeter the dividing points are at SAR 

values of 10, 18, and 26, but at 5, 000 micromhos the corresponding 

dividing points are at 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.

C. Boron hazard

In assessing water quality on the basis of boron only, the 

classification uses the limits proposed by Scofield (1936). This 

grouping involves the ranges for sensitive, semitolerant, and 

tolerant crops, with respect to boron, for each of five classes.
22 QUALITY FOR IRRIGATION, 1955

D. Bicarbonate ion hazard.

The effect of bicarbonate ion concentration on water quality is expressed in terms of "residual sodium carbonate" (RSC) 

which is defined by the equation:

RSC= (HCOs - + CO3 =) - (Ca++ + Mg++)

Then in appraising quality of irrigation water with the above 

classifications, the Salinity Laboratory Staff recommends that 

first consideration be given to salinity and alkali hazards, then to 

independent characteristics, boron or toxic elements, any one of 

which may change the quality rating. Factors such as drainage 

and management practices, largely determine the effectiveness of 

irrigation activity.

SELECTED REFERENCES

Eaton, F. M. , 1935, Boron in soils and irrigation waters and its 

effect on plants: U. S. Dept. Agriculture Tech, Bull. 448, 

p. 1-133.

 1942, Toxicity and accumulation of chloride and sulfate salts 

in plants: Jour. Agriculture Res. 64, p. 357-399.

 1950, Significance of carbonates in irrigation water: Soil

Science v. 69, p. 123-133. 

Federal Interagency River Basin Committee, 1950, Minutes of

the fifty-sixth meeting, Subcommittee on Hydrology (mimeographed). 

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

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

707, p. 8-9. 

President's Water Resources Policy Commission, 1950. A water

policy for the American people: v. 1: General Report, p. 152 

153. 

Scofield, C. S. , and Headley, F. B., 1921, Quality of irrigation

water in relation to land reclamation: Jour. Agriculture Res.

21, p. 265-278. 

Scofield, C. S. , 1936, The salinity of irrigation water: Smithsonian Institution Ann. Rpt. , 1935, p. 275-287.

 1949, Trends of irrigation development in the United States;

Symposium, Am. Chem. Soc. , p. 1 11 (mimeographed). 

Straus, Michael, 1952, Use of water for irrigation: Interior and

Insular Affairs Committee, U. S. House of Representatives;

v. 2, The physical basis of water supply and its principal uses. 

Thorne, J. P. , and Thorne, D. W. , 1951, Irrigation waters of

Utah: Utah Agriculture Expt. Sta. Bull. 349.
PART 5. HUDSON BAY AND UPPER MISSISSIPPI RIVER B

RED RIVER OF THE NORTH BASIN 

SHEYENNE RIVER NEAR WARWICK, N. DAK.

LOCATION. At gaging station at highway bridge, 3.3 miles south of Warwick, Benson County

DRAINAGE AREA. 2,100 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: January 1951 to September 1955.

itfater temperatures: January 1951 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 1,940 micromhos Feb.

Percent sodium: Maximum, 66 July 8-18; minimum, 11 Feb. 2. 

EXTREMES, 1951-55.--Specific conductance: Maximum daily, 1,940 micromhos Feb.

Percent sodium: Maximum, 66 July 8-18, 1955; minimum, 11 Feb. 2, 1955. 

REMARKS. Values reported for dissolved solids are residues on evaporation at 180°C unless 

1; minimum 

1, 1955; m

analyses composited by discharge. Records of specific conductance of daily samples av

Records of discharge for water year October 1954 to September 1955 given in WSP 1388.

Chemical analyses, water year October 1954 to September 19

Date 

of 

collection

Oct. 1-8, 1954 ..

Oct 9

Oct. 10-16 .....

Oct. 17-19 .....

Oct. 20-Nov. 14.

Nov. 17-27 .....

Nov. 28-Dec. 15.

Dec. 16-Jan. 13,195!

Jan. 14-16 .....

Jan. 21-23......

Jan. 27-30......

Runoff 

(acrefeet)

660

63

498

171

1,210

75

393

443

296

20

90

7

20

20

15

Silica 

(Si02) 

ppm

__

-

12

--

_.

Equivalents per million

Calcium 

(Ca)

4

4

4

4

5

5

2.54

5

6

6

c

6

6

7

6

Magnesium 

(Mg)

84

56

84

74

24

12

2.78

36

54

36

86

44

64

.76

48

Sodium 

(Na)

7.65

4.78

8.31

5.35

7.48

5.78

7.26

5.26

6.74

10.83

5.70

11.44

6.35

9 91

5.48

Potassium 

(K)

__

-

0.31

--

--

__

Bicarbonate 

(HC03)

9.72

7.47

10.28

7 92

9.54

7.80

9.70

8.15

10.06

11.50

8.26

11.73

9

00

12.95

8.49

Carbonate 

(C03)

0. 17

.00

.00

.00

.00

.53

.00

.00

.00

.80

.30

1.10

.40

.33

.47

Sulfate 

(S04)

2.27

2.58

1 09

2.69

2.37

2.64

2.17

2.79

4.33

2.62

4.58

2 Q1

4.06

2.77

Chloride 

(Cl)

__

--

0.68

--

--

__

Nitrate 

(NO,)

-.

--

0.01

--

--

__

Boro

(B) 

ppm

__

--

0.31

--

--

c Sum of determined constituents.

d 0.03 equivalent per million fluoride (F).
SELECTED REFERENCES 23

U. S. Geol. Survey, 1954, Quality of surface waters for irrigation, Western United States, 1951: U. S. Geol. Survey WaterSupply Paper 1264, p. 1 153; 1955, Quality of surface waters 

for irrigation, Western United States, 1952: U. S. Geol. Survey 

Water-Supply Paper 1362, p. 1-179.

U. S. Salinity Laboratory Staff, 1954, Diagnosis and improvement of saline and alkali soils: U. S. Dept. Agriculture Handbook 60, p. 1-160.

Wilcox, L. V. , 1948, The quality of water for irrigation use: 

U. S. Dept. Agriculture Tech. Bull. 926, p. 1-40.
RED RIVER OF THE NORTH BASIN--Continued

SOURIS RIVER NEAR WESTHOPE, N. DAK.

LOCATION.--At gaging station, 1,200 feet upstream from second crossing of international 

Wildlife Service dam 357, 7 miles northeast of Westhope, Bottineau County, and 11 mil

DRAINAGE AREA. 17,600 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: June 1954 to September 1955.

Water temperatures: September 1954 to January 1955, May to September 1955. 

EXTREMES, August 1954 to September 1955.--Specific conductance: Minimum daily, 355 micr

Percent sodium: Maximum 48 Sept. 10-26, 1954; minimum, 30 June 12, 1955. 

REMARKS.--Values reported for dissolved solids are residues on evaporation unless otherw

analyses composited by discharge. Records of specific conductance of daily samples a

Samples collected monthly during winter because of extreme weather conditions. Recor

to September 1955 given in WSP 1388.

Chemical analyses, July 1951 to September 1954

Date 

of 

collection

July 4, 1951 .... 

June 30, 1954 . . . 

Aug. 12-Sept. 8 . 

Sept. 10-26 .....

Runoff 

(acrefeet)

2,300 

14,560 

823

Silica 

(Si02) 

ppm

7.1

12 

13

Equivalents per million

Calcium 

(Ca)

1.85 

2.15 

1.75 

1.10

Magnesium 

(Mg)

1.99 

2.51 

2.85 

2.58

Sodium 

(Na)

2. 

3.00 

3.61 

3.65

Potassium 

(K)

86

0.28 

.28

Bicarbonate 

(HCOS)

a4. 50 

4.92 

5.74 

4.92

Sulfate 

(SOJ

1.92 

2.79 

2.39 

2.17

Chloride 

(Cl)

0.23 

.31 

.34 

.39

Fluoride 

(F)

0.01

.02 

.02

Nitrate 

(NO,)

0.04

.11 

.16

Bo

(B

pp

0.1

.1

.1

a Includes 0. 53 equivalent per million of carbonate (COS).
Jan. 31-Feb. 1,1955 

Feb. 2...........

Feb. 3-11........

Feb. 12-14 ......

Feb. 15-17.......

Feb. 18-Mar. 9 .. 

Mar. 10-20. ......

Mar. 21-23 ......

Mar. 24-29 ......

Mar. 30-Apr. 2 . . 

Apr. 3-5.........

Apr. 6-7.........

Apr. 8-17........

Apr. 18-May 8 ... 

May 9-28. ........

May 29-June 8 ....

July 8-18 ........

July 19- Aug. 2 ... 

Aug. 3-16........

Aug. 17-Sept. 4 ..

Total or weighted 

average a .....

8 

4

58

12

10

82 

441

282

512

4,570 

7,360

2,800

3,720

3,860 

2,040

2,420 

3,580

492

272 

150

112 

114

a 36, 800

--

16

--

--

-

28

__

7.44 

4.20

8.08

6.44

8.08

6.90 

3.09 2.95

8.48

3.44

1.52 

1.56

2.06

2.70

4.10 

5.26

5.82 

5.58

4.86

4.20 

4.08

4.10 

2.74 1.48

3.50

11.65 

.52

11.57

5.65

10.52

6.39 

5.70

11.74

3.17

1.09 

1.00

1.91

2.61

4.61 

6.17

7.40 

9.57

9.57

7.04 

5.26

3.39 

1.31

4.22

--

.38

--

-

-

--

.10

_

12.75 

3.77

13.83

8.49

13.39

10.01 

8.75

13.55

4.33

1.82 

1.74

2.64

3.59

6.10 

7.95

9.70 

10.82

10.85

8.62 

7.21

6.10 

4.57

b5. 54

1.00 

.20

.53

.67

.27

.00 

.00

.70

.00

.00 

.00

.00

.00

.00 

.00

.00 

.30

.00

.00 

.00

.00 

.00

__

4.75 

.75

4.64

2.77

4.27

2.79 

2.71

5.50

2.17

.83 

.92

1.39

1.79

2.46 

3.12

3.41 

3.87

3.73

2.62 

1.81

1.46 

1.04

2.08

--

__

__

.68

--

--

--

-

.13

._

--

_

.06

--

-

--

.01

__

.4

.0

a Represents 100 percent of runoff for water year, 

b Includes carbonate as bicarbonate, 

c Sum of determined constituents.

e 0. 02 equivalent per million fluoride (F). 

f 0. 01 equivalent per million fluoride (F).
RED RIVER OF THE NORTH BASIN Continued

SOURIS RIVER NEAR WESTHOPE, N. DAK. Continu

Chemical analyses, October 1954 to September 1955

Date 

of 

collection

Oct. 1-5, 1954 . . 

Oct. 6-Nov. 2... 

Nov. 3-30. ......

Dec. 1-7. .......

Dec. 8-24 ......

Dec. 25 ........

Dec. 26-Jan.8,1955 

Jan. 9-15.......

Feb. 26 ........

Mar. 9 .........

Apr. 5-15 ......

Apr. 16-23 .....

Apr. 24-30 .....

May 1 -8 ........

May 9-June 2 ... 

June 3-11.......

July 1-17 .......

July 18- Aug. 1 . . 

Aug. 2-31.......

Sept. 1-18 ......

Sept. 19-i38 .....

Total or weighted

Total or weighted 

average e . . . .

Runoff 

(acrefeet)

2,450 

25,410 

10,680 

3,030 

2,290 

125

1,790 

944 

139 

135 

135

44,650 

44,390 

33,100 

31,600 

100, 500

29, 140 

3,110 

49, 550 

28,210 

10,640

16,640 

6,100 

1,150

445,900

459,400

Silica 

(SiOj) 

ppm

5.7 

7.9 

10 

10 

9.8 

11

8.2 

10 

11 

21 

21

7.6 

4.1 

7.8 

9.1 

7.7

3.3 

9.2 

4.3 

6.8 

9.4

9.0 

6.1 

2.6

6.9

7.1

Equivalents per million

Calcium 

(Ca)

1.40 

2.15 

2.64 

2.99 

3.24 

2.30

4.09 

3.59 

4.39 

5.19 

4.89

1.20 

1.45 

1.95 

2.50 

2.59

2.25 

3.64 

2.10 

2.00 

2.00

1.85 

1.95 

1.75

2.10

2.15

Magnesium 

(Mg)

2.62 

2.95 

3.48 

3.97 

4.60 

3.50

5.17 

6.09 

6.61 

5.47 

5.27

1.22 

1.55 

2.03 

2.22 

3.03

2.51 

2.44 

2.46 

2.38 

2.46

2.77 

2.73 

2.77

2.47

2.55

Sodium 

(Na)

3.70 

3.87 

4.44 

4.91 

5.31 

4.09

6.48 

7.09 

7.31 

6.52 

6.04

1.22 

1.48 

2.13 

2.48 

3.00

2.52 

2.74 

2.52 

2.87 

2.83

2.96 

3.31 

3.48

2.61

2.70

Potassium 

(K)

0.28 

.28 

.28 

.31 

.36 

.26

.38 

.41 

.43 

.38 

.38

.24 

.26 

.28 

.28 

.33

.28 

.38 

.25 

.25 

.28

.31 

.31 

.31

0.28

0.28

Bicarbonate 

(HCO,)

5.18 

6.10 

6.72 

7.54 

8.36 

6.23

9.80 

10.14 

11.34 

10.78 

10.19

2.21 

2.77 

3.56 

4.28 

5.31

4.85 

7.18 

4.79 

4.61 

4.72

4.82 

5.02 

4.95

4.52

4.64

Sulfate 

(SOJ

2.19 

2.60 

3.56 

3.91 

4.48 

3.44

5.52 

6.10 

6.25 

5.48 

5.41

1.35 

1.79 

2.60 

3.04 

3.33

2.50 

1.25 

2.39 

2.56 

2.77

2.89 

2.87 

2.83

2.62

2.69

Chloride 

(Cl)

0.39 

.48 

.54 

.62 

.71 

.54

.87 

.96 

1.02 

.96 

.96

.18 

.20 

.27 

.28 

.31

.25 

.37 

.21 

.25 

.25

.31 

.27 

.31

0.28

0.31

Fluoride 

(F)

0.02 

.02 

.02 

.02 

.02

.02 

.02 

.03 

.02 

.01

.01 

.01 

.00 

.00 

.02

.01

.01 

.02 

.02

.02 

.02 

.02

do.oi

0.01

Nitrate 

(NO,)

0.16 

.06 

.06 

.05 

.04 

.02

.04 

.02 

.08 

.12 

.14

.06 

.02 

.02 

.02 

.04

.05 

.02 

.04 

.05 

.04

.07 

.11 

_^02_

0.04

0..'04

Bo

(

pp

0.

.

.

.

.

.

.2

.2

.2

.0

.2

.0

.

.

.

.

.

.

.

.

.

.

.

.

0.

0.

b Sum of determined constituents.

c Represents 97 percent of runoff for water year

d Includes estimates where data are missing.

e Includes estimated data for missing periods. 
PART 6. MISSOURI RIVER BASIN

MISSOURI RIVER MAIN STEM 

MISSOURI RIVER NEAR WILLISTON, N. DAK.

LOCATION. At gaging station at Lewis and Clark Highway bridge, 5 miles southwest of Wil

from Yellowstone River.

DRAINAGE AREA. 164,500 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1955.

Water temperatures: May 1951 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 919 micromhos Jan. 9, minimum d

Percent sodium: Maximum, 41 Apr. 14 to May 24; minimum, 32 June 3. 

EXTREMES, 1950-55. Specific conductance: Maximum daily, 919 micromhos Jan 9, 1955; mini

Percent sodium: Maximum, 41 May 26 to June 9, 1953, Apr. 14 to May 24, 1955; minimum, 

REMARKS. Values reported for dissolved solids are residues on evaporation. Daily samples 

Records of specific conductance of daily samples available in regional office at Linco

1954 to September 1955 given in WSP 1389.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-28, 1954

Oct. 29 -Nov. 12

Nov. 13-Dec. 6

Dec. 7-26

Dec. 27- Jan. 23, 1955

Jan. 24-Feb. 7....

Feb. 8-11 ........

Feb. 12-13 .......

Feb. 14-Mar. 6 ...

Mar. 7-8 .........

Mar. 9 ...........

Mar. 10-12 .......

Apr. 3-6 .........

Apr. 7-13 ........

Apr. 14-30 .......

May 1-24 .........

May 25 - June 2 ...

Runoff 

(acrefeet)

1,900,000

792, 600

627, 800

466, 900

505, 700

328, 100

84, 540

38, 760

384, 200

38, 960

19,830

69,220

451,200

452, 600

979, 600

1,321,000

640, 500

Silica 

(SiOJ 

ppm

__

__

13

_

--

._

__

11

__

--

Equivalents per million

Calcium 

(Ca)

Magnesium 

(Mg)

4.76

4.88

3.24 2.16

5.56

e. 04

5.58

5.14

6.02

3.24 2.20

4 64

6.16

4.16

4 .2fi

4.00

4.50

4.34

3.78

Sodium 

(Na)

2.61

2.70

3.13

3.26

3.35

3.00

2.78

3.30

2.91

2.48

3.30

2.17

2.39

2.61

3.13

3.04

2.26

Potassium 

(K)

__

__

0.10

__

--

__

__

.12

__

__

_

--

Bicarbonate 

(HCO,)

3.23

3.28

3.56

3.67

3.93

3.64

3.34

3.87

3.52

3.03

3.97

3.08

2.74

2.72

2.92

3.13

2.70

Sulfate 

(SOJ

4.04

4.25

4.79

4.89

5.31

4.95

4.58

5.37

4.71

3.93

5.48

3.50

3.79

3.83

4.68

4.12

3.33

Chloride 

(Cl)

__

_

0.31

_

--

..

_

.34

_

Fluoride 

(F)

__

__

0.03

_.

--

__

__

.03

__

__

__

__

Nitrate 

(NO,)

__

__

0.01

_

--

.03

--

Bor

(B

pp

0.

.
June 3, 1955 .....

June 4-16.........

June 18-30. .......

July 1-23 .........

July 24-28 ........

July 29 - Aug. 31 . .

Sept. 1-30 ........

Total or weighted 

average a ....

Total or weighted 

average b ....

61,290

878, 900

83,110

1,290,000

1, 892, 000

365, 000

2,225,000

1, 762, 000

17, 660, 000

18,350,000

18

12

3

2.20

3

3

3

4

4

2.74

4

4

20

1.48

92

34

90

00

56

2.02

.46

46

1.48

2.09

2.48

1.61

2.13

2.22

2.44

2.61

2.52

2.52

.09

.11

__

2.46

2.57

2.79

2.29

2.74

2.84

3.13

3.23

3.05

3.03

2.06

3.02

3.46

2.58

3.21

3.54

3.02

4.06

3.91

3.89

.17

.25

._

.02

.03

__

02

.02

__

.13

.13

_

a Represents 96 percent of runoff for water year October 1954 to September 1955.

b Includes estimated data for missing periods. Represents 100 percent of runoff for water year October 1954 to Sep
MISSOURI RIVER MAIN STEM Continued

MISSOURI RIVER AT PIERRE, S. DAK.

LOCATION. At bridge on U. S. Highway 14 at Pierre, Hughes County, 0.3 mile upstream from 

Bad River.

DRAINAGE AREA. 243,500 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: October 1950 to September 1955.

Water temperatures: March 1951 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 959 micromhos Feb. 28; minimum d

Percent sodium: Maximum, 43 June 7-30; minimum, 36 Oct. 27 to Feb. 3. 

EXTREMES, 1951-55.--Specific conductance: Maximum daily, 1,040 micromhos Jan. 23, 1954; m

Percent sodium: Maximum, 45 May 1-3, 1953; minimum, '27 Jan. 24-27, 1952.

REMARKS.--Values reported for dissolved solids are residues on evaporation at 180°C. Dail

by discharge.Records of specific conductance of daily samples available in regional off

for water year October 1954 to September 1955 given in WSP 1389.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-26, 1954 . . . 

Oct. 27-29........

Oct. 30-Nov. 30... 

Dec. 1-31. ........

Jan. 1-22, 1955 ... 

Jan. 23-Feb. 3 ....

Feb. 4-23. ........

Feb. 24-Mar. 8 ... 

Mar. 9-22 ........

Mar. 23-31 .......

Apr. 1-3. .........

Apr. 4-8..........

Apr. 9-24 ........

Apr. 25-May 6 .... 

May 7-30 .........

May 31-June 6 ....

Runoff 

(acrefeet)

1,761,000 

151,900 

903, 500 

459, 600 

306, 600 

166, 600

299, 500 

203, 800 

311, 000 

132, 800 

58, 160 

145, 600

365, 800 

517, 900 

1, 909, 000 

506, 400

Silica 

(Si02) 

ppm

11 

13

Equivalents per million

Calcium 

(Ca)

4 

4 

4 

3.14 

5 

5

5 

6 

2.89 

5 

5 

4

5 

5 

4 

4

Magnesium 

(Mg)

62 

76 

94 

2.10 

68 

86

96 

32 

2.07 

08 

50 

92

64 

44 

64 

28

Sodium 

(Na)

2.78 

2.70 

2.83 

3.00 

3.17 

3.35

3.44 

3.74 

3.17 

3.44 

3.52 

3.13

3.52 

3.30 

3.00 

3.09

Potas- 

"sium 

(K)

0.11 

.13

Bicarbonate 

(HCOS)

3.13 

3.18 

3.33 

3.62 

3.85 

3.95

4.00 

4.16 

3.06 

3.62 

3.43 

3.39

3.75 

3.67 

3.11 

2.92

Sulfate 

(SOJ

4.06 

4.12 

4.33 

4.56 

4.93 

5.27

5.35 

5.79 

4.85 

4.85 

5.45 

4.52

5.41 

4.85 

4.62 

4.33

Chloride 

(Cl)

0.28 

.31

Fluoride 

(F)

0.03 

.03

Nitrate 

(NO,)

0.01 

.02

Boro

(B) 

ppm

0.15 

.20
June 7-30, 1955 ..

July 1-31 ........

Aug. 1-31........

Sept. 1-30 .......

Total or weighted

average a .....

1, 102,000

1,927,000

1,513,000

1,838,000

14, 580, 000

20

15

--

2.64 | 1.72

4.18

3.80

2.35 | 1.31

4.52

3.35

3.13

2.57

2.44

2.96

.15

19

--

3.02

3.05

2.77

2.72

3.15

4.48

4.58

3.71

3.50

4.35

.27

.20

--

.02

.03

--

.02

.02

--

a Represents 100 percent of runoff for water year October 1954 to September 1955.
MISSOURI RIVER MAIN STEM--Continued

MISSOURI RIVER AT NEBRASKA CITY, NEBR.

LOCATION.--At gaging station at Waubonsie Highway bridge at Nebraska City, Otoe County.

DRAINAGE AREA. 414,400 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: January 1951 to September 1955.

Water temperatures: May 1951 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 841 micromhos Jan. 23; minimum 

Percent sodium: Maximum, 43 Aug. 8-31; minimum, 26 Mar. 11-16. 

EXTREMES, 1951-55.--Specific conductance: Maximum daily, 936 micromhos Jan. 6, 1953; min

Percent sodium: Maximum, 43 June 20-25, 1953, Aug. 8-31, 1955; minimum, 18 Mar. 27-29, 

REMARKS.--Values reported for dissolved solids are residues on evaporation. Daily sample

Records of specific conductance of daily samples available in regional office at Linco

October 1954 to September 1955 given in WSP 1390.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-31, 1954. . . 

Nov. 1-30 ........

Dec. 1-31 ........

Jan. 1-4, 1955.... 

Jan. 15-Feb. 9 ...

Feb. 10-28 .......

Mar. 1-10........

Mar. 11-16. ......

Mar. 17-22.......

Mar. 23 -Apr. 10. .

Apr. 11-May 11... 

May 12-29 .......

May 30-June 25 ... 

June 26-July 12 ... 

July 13-19........

Julv 20-31........

Runoff 

(acrefeet)

2,218,000 

1,123,000 

1, 008, 000 

409, 000 

596, 700

564, 900 

497, 100 

572,400 

347, 100 

1,083,000

1, 944, 000 

1,182,000 

1,921,000 

1, 195, 000 

484, 200 

766. 600

Silica 

(Si02 ) 

ppm

17 

15 

16

Equivalents per million

Calcium 

(Ca)

4 

4 

3.14 

4 

5

4 

4 

2.54

4 

4

5 

5 

3.14

4 

4 

4

Magnesium 

(Mg)

30 

72 

1.58 

82 

24

78 

28 

1.36 

00 

76

22

20 

1.72 

54 

40 

60

Sodium 

(Na)

2.39 

2.57 

2.44 

2.48 

2.78

2.61 

2.00 

1.39 

1.48 

2.22

2.65 

3.04 

2.91 

2.65 

2.61 

3.13

Potassium 

(K)

0.13 

.16 

.16

Bicarbonate 

(HCO,)

2.98 

3.41 

3.44 

3.47 

3.80

3.38 

3.13 

2.95 

2.93 

3.31

3.47 

3.36 

3.26 

3.13 

3.05 

3.11

Sulfate 

(804)

3.44 

3.35 

3.29 

3.33 

3.62

3.39 

2.71 

2.25 

2.23 

3.27

4.14 

4.58 

4.21 

3.85 

3.77 

4.37

Chloride 

(Cl)

0.71 

.37 

.51

Fluoride 

(F)

0.03 

.02 

.03

Nitrate 

(NOS)

0.05 

.06 

.01

Bor

(B

ppm

0.0

.0

.1
Aug. 1-7, 1955 ...

Aug. 8-31 ........

Sept. 1-30........

Total or weighted

average a .....

215,400

1,621,000

2,122,000

19,870,000

--

10

4.84

4.72

2.94 | 1.60

4.70

3.39

3.52

3.39

2.74

--

- -

.16

--

3.33

3.20

3.25

3.26

4.48

4.79

3.87

--

.42

--

--

.03

--

_

.01

-

.15

-

a Represents 100 percent of runoff for water year October 1954 to September 1955.
YELLOWSTONE RIVER BASIN

YELLOWSTONE RIVER AT BILLINGS, MONT.

LOCATION. At gaging station at bridge on U. S. Highway 87, 1 mile northeast of Billings, 

Pryor Creek.

DRAINAGE AREA.--11,870 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: October 1950 to September 1955.

Water temperatures: December 1950 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 776 micromhos Dec. 30; minimum 

Percent sodium: Maximum, 32 Aug. 10-31; minimum, 20 June 14. 

EXTREMES, 1950-55.--Specific conductance: Maximum daily, 1,210 micromhos Feb. 2, 1951; m

Percent sodium: Maximum, 37 Dec. 1, 1950; minimum, 16 May 20, 1951.

REMARKS. Values reported for dissolved solids are residues on evaporation. Daily sample

Records of specific conductance of daily samples available in regional office at Linco

October 1954 to September 1955 given in WSP 1389.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-31, 1954 . .

Nov. 1-30 .......

Dec. 1-29 .......

Dec. 30-31 ......

Jan. 1-23, 1955 . .

Jan. 24 - Feb. 17.

Feb. 18 .........

Feb. 19-28. ......

Mar. 1-26 .......

Mar. 27 .........

Mar. 28-30 ......

Mar. 31-Apr. 6 . .

Apr. 7-30 .......

May 1-8 ........'.

Runoff 

(acrefeet)

186,600

183,900

149, 800

6,940

94,610

112, 100

4,170

35,800

109, 000

3,170

19,830

50, 140

197, 000

60.850

Silica 

(Si02) 

ppm

__

18

--

_.

15

__

_.

Equivalents per million

Calcium 

(Ca)

3

3

2.35

5

4

3

2

2.40

3

4

3

2

i

3

Magnesium 

(Mg)

52

.52

1.29

.18

.00

.48

.56

1 49

.56

.76

.48

.74

.42

.10

Sodium 

(Na)

1.52

1.48

1.52

2.30

1.52

1.39

1.04

1.52

1.48

1 Q1

1.52

1.17

1.57

1.35

Potassium 

(K)

._

0.09

--

..

__

.10

Bicarbonate 

(HC03)

2.82

2.79

2.90

3.67

2.98

2.69

1.90

2.80

2.59

711

2.65

2.25

2.72

2.59

Sulfate 

(S0<)

2.10

1.98

2.17

3.71

2.39

2.08

1.48

9 49

2.27

7 77

2.17

1.56

2.17

1.79

Chloride 

(Cl)

_.

0.25

--

.28

Fluoride 

(F)

._

0.03

--

.-

.03

Nitrate 

(N03)

__

0.03

--

._

__

.04

Boro

(B) 

ppm

_

0.2

.2
May 9-16, 1955 . .

May 17-22

May 23-26 .......

May 27-June 9 ...

June 10-13 .......

June 14 ..........

June 15 -27 .......

June 28-July 3 ...

July 4 ...........

July 5-22 ........

July 23-29 .......

July 30-Aug. 9 ...

Aug. 10-31.......

Sept. 1-30 .......

Total or weighted

average a .....

94, 850

104, 100

109, 900

324,400

151,300

45,820

676, 400

194,400

23,210

370, 300

128, 000

123,500

153,500

160,400

3, 874, 000

_.

__

_.

-

..

16

__

_.

--

17

--

2

1

1

1

1

2

.75

1

i

1

1

2

2

2.00

2

20

96

52

76

34

08

.37

40

84

56

84

30

76

1.40

28

.87

.65

.52

.70

.42

.52

.37

.48

.61

.65

.74

1.00

1.30

1.61

0.91

..

__

__

-

_.

.03

._

_.

-

.11

--

1.90

1.72

1.36

1.61

1.26

1.95

1.13

1.34

1.41

1.47

1.70

2.06

2.36

2.80

1.95

1.08

.87

.67

.83

.44

.67

.31

.48

.62

.67

.81

1.23

1.67

2.12

1.19

--

__

__

--

._

__

.06

.39

__

--

..

.23

--

--

-_

_

--

..

__

.01

_.

__

__

--

..

.02

--

__

__

__

-

_.

__

.02

__

__

--

._

.02

--

a Represents 100 percent of runoff for water year October 1954 to September 1955.
YELLOWSTONE RIVER BASIN Continued

YELLOWSTONE RIVER NEAR SIDNEY, MONT.

LOCATION. At bridge on State Highway 23, 2 miles south of Sidney, Richland County, 4£ mil

downstream from Fox Creek, and 30 miles upstream from mouth. 

DRAINAGE AREA. 69,450 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: October 1950 to September 1955.

Water temperatures: January 1951 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 1,400 micromhos Mar. 3; minimum 

Percent sodium: Maximum, 47 May 5-13; minimum, 30, June 20-27. 

EXTREMES, 1951-55. Specific conductance: Maximum daily, 2,780 micromhos Jan. 14, 1951; m

Percent sodium: Maximum, 48 May 1-30, 1953; minimum, 26 June 11-13, 1952.

REMARKS. Values reported for dissolved solids are residues on evaporation unless otherwis

composited by discharge. Records of specific conductance of daily samples available in 

charge for gaging station near Sidney for water year October 1954 to September 1955 gi

gaging station and sampling station.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-31, 1954... 

Nov. 1-30 ........

Dec. 1-31 ........

Jan. 1-4, 1955.. .. 

Jan. 5-12.. .......

Jan. 13-31 .......

Feb. 1-28 ........

Mar. 1-2.........

Mar. 3-7.........

Mar. 8-16........

Mar. 17-Apr. 11..

Apr. 12-May 4.. . . 

May 5-13.........

May 14-23........

May 24-June 11 ... 

June 12-19. .......

June 20-27 .......

Runoff 

(acrefeet)

369, 900 

387, 300 

353, 700 

26, 780 

61, 090 

154, 000

256,500 

12,810 

35,640 

115,500 

483,900

525,700 

179, 600 

274, 000 

728, 300 

434, 800 

543. 100

Silica 

(SiOJ 

ppm

13

12 

21

Equivalents per million

Calcium 

(Ca)

5 

5 

3.79 

7 

7 

6

6 

6 

9 

3.09 

5

5 

4 

4 

3 

1.90 

3

Magnesium 

(Mg)

68 

98 

2.57 

12 

96 

96

08 

94 

70 

1.75 

74

78 

70 

26 

.52 

.90 

.12

Sodium 

(Na)

4.00 

3.83 

3.87 

4.22 

4.87 

3.87

3.39 

4.09 

5.74 

3.04 

3.26

4.09 

4.09 

2.61 

1.91 

1.26 

1.35

Potassium 

(K)

0.12

.14 

.06

Bicarbonate 

(HCOS)

3.46 

3.62 

3.88 

4.33 

4.74 

4.29

3.70 

4.18 

5.77 

3.02 

_3.03

3.23 

3.31 

2.61 

2.38 

2.18 

1.97

Sulfate 

(804)

5.89 

5.83 

6.31 

6.83 

7.60 

6.52

5.60 

6.56 

9.26 

4.64 

5.77

6.45 

5.27 

4.14 

2.94 

1.75 

2.37

Chloride 

(Cl)

0.42

.37 

.14

Fluo- 

.ride 

(F)

0.03

.04 

.01

Nitrate 

,(NOS)

0.03

.06 

.04

Bor

(B

pp

0.2

.1

.0

a Sum of determined constituents.
June 28- July 4,1955 

July 5-28. ........

July 29-Aug. 9. ... 

Aug. 10-13 .......

Aug. 14-31 .......

Sept. 1-30. .......

Total or weighted 

average b ......

431,000 

585,800

198, 300 

36,750

131,500

180, 000

6, 506,000

--

11

3.10 

3.04

4.36 

8.64

5.20

3.19 | 2.61

4.66

1.61 

1.91

2.91 

4.91

3.78

4.70

2.87

--

--

.13

..

2.20 

2.20

2.75 

3.62

3.00

3.47

2.90

2.42 

2.69

4.54 

10.10

6.00

6.83

4.48

--

-

.37

--

--

.03

--

--

.01

--

--

.26

b Represents 100 percent of runoff for water year October 1954 to September 1955.
YELLOWSTONE RIVER BASIN--Continued

BIGHORN RIVER AT BIGHORN, MONT.

LOCATION. At bridge on U. S. Highways 10 and 12, 1 mile upstream from mouth, 1 mile southwe

downstream from gaging station near Custer. 

RECORDS AVAILABLE.--Chemical analyses: February 1950 to September 1955.

Water temperatures: April 1949 to September 1951, August 1952 to September 1955. 

Sediment records: July 1947 to September 1954. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 1,560 micromhos July 28; minimum d

Percent sodium: Maximum, 45 Sept. 1-30; miniumu, 27 June 20-21. 

EXTREMES, 1951-55. Specific conductance: Maximum daily, 1,560 micromhos July 28, 1955; min

Percent sodium: Maximum, 49 May 23-28, 1952; minimum, 27 June 20-21, 1955.

REMARKS.--Values reported for dissolved solids are residues on evaporation unless otherwise 

composited by discharge. Records of specific conductance of daily samples available in r

discharge for gaging station near Custer for water year October 1954 to September 1955 giv

between gaging station and sampling point except small amounts of irrigation waste water.

Chemical analyses, water year October 1954 to September 1

Date 

of 

collection

Oct. 1-31, 1954..

Nov . 1 -30. .......

Dec. 1-31 .......

Jan. 1-31, 1955..

Feb. 1 ..........

Feb. 2-11. .......

Feb. 12-23. ......

Feb. 24 .........

Feb. 25-28. ......

Mar. 1-8

Mar. 9-10

Mar. 11-31

Apr. 1-5

Apr. 6-30

Runoff 

(acrefeet)

162,900

167,900

176,400

144, 500

4,960

41,450

49, 590

3,970

16,460

35,500

10,120

132,700

61,190

249, 800

Silica 

(Si02) 

ppm

..

_

12

_

__

11

--

--

--

Equivalents per million

Calcium 

(Ca)

7.

Magnesium 

(Mg)

48

7.58

4.69 2.85

7.62

5.44

7 _. 34

8.46

6.00

4.49

7

3 17 . O 1

56

3.32

6.98

6.24

6.52

Sodium 

(Na)

5.31

5.17

4.74

4.44

3.22

4.35

4.87

3.44

4.13

4.48

1.96

4.30

3.96

4.87

Potassium 

(K)

__

_

0.11

_

.12

--

Bicarbonate 

(HCO,)

3.85

3.90

4.10

4.20

3.15

4.05

4.49

3.21

4.62

3.93

1.84

3.56

3.44

3.47

Sulfate 

(804)

8.70

8.43

8.02

7.81

5.45

7.49

8.64

6.10

7.14

7.87

3.29

7.66

6.72

7.77

Chloride 

(Cl)

_

__

0.45

__

__

.39

--

--

Fluoride 

(F)

__

__

0.03

__

.02

--

--

Nitrate 

(NOS)

_

__

0.03

__

.05

--

--

--

--

Boron 

(B) 

ppm

__

__

0.16

_

_

__

.17

--

--
May 1-16, 1955... 

May 17-29 .......

May 30-June 19. . . 

Jane 20-21. ......

June 22 -July 4 ... 

July 5-14 ........

July 15-27 .......

July 28-31 .......

Aug. 1-31 .......

Sept. 1-30.......

Total or weighted 

average ^ .....

107,800 

150,300

218,700 

23, 050

138,300 

42,410

35,450

16,110

89, 390

98, 700

2,178,000

18

_

19

6 

4

3.44

7

5 

6

7

10

7

4.74

6

.48 

.82

1.96 

.06

.12 

36

.18

.88

.80

3.18

.76

4.09 

2.91

3.13 

2.65

2.91 

4.04

5.65

6.31

6.13

6.57

4.44

--

.08

--

__

.13

3.33

2.74

3.00 

2.77

2.88 

3.13

3.15

4.26

3.56

3.57

3.52

7.08 

5.06

5.48 

6.93

5.10 

6.97

9.47

13.22

10.51

10.72

7.54

.25

--

__

.54

.02

.03

..

--

.05

--

.04

.

.2

a Sum of determined constituents.

b Represents 100 percent of runoff for water year October 1954 to September 1955.
YELLOWSTONE RIVER BASIN--Continued

TONGUE RIVER AT MILES CITY, MONT.

LOCATION. At gaging station, 4 miles south of Miles City, Custer County, and 8 miles upst

RECORDS AVAILABLE.--Chemical analyses: January 1951 to September 1955. 

Water temperatures: April 1949 to September 1955. 

Sediment records: June 1946 to September 1951. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 1,790 micromhos Sept. 25; minimu

Percent sodium: Maximum, 69 May 4; minimum, 19 June 21-30 . July 2-5. 

EXTREMES, 1951-55.--Specific conductance: Maximum daily, 2,280 micromhos July 24, 1953; mi

Percent sodium: Maximum, 69 May 4, 1955; minimum, 19 June 8-11, 1951, June 1-15, 1952, 

REMARKS.--Values reported for dissolved solids are residues on evaporation unless otherwis

composited by discharge. Records of specific conductance of daily samples available in 

discharge for water year October 1954 to September 1955 given in WSP 1389.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-25, 1954... 

Oct. 26-31. .......

Nov. 1-30 ........

Dec. 1-31 ........

Jan. 1-31, 1955...

Feb. 1-28 ........

Mar. 1-8.. .......

Mar. 9-11........

Mar. 12-14.......

Mar. 15-22.. .....

Mar. 23-29.......

Mar. 30-Apr. 11.. 

Apr. 12-18 .......

Apr. 19-May 3 .... 

May 4 ............

May 5-17.........

May 18-27........

Runoff 

(acrefeet)

2,990 

1,850 

12,650 

12, 800 

9,380

5,840 

1,970 

4,460 

2,270 

3,910 

2,470

8, 180 

4,430 

19, 130 

4,760 

14, 630 

19. 550

Silica 

(Si02) 

ppm

9.0 

13

Equivalents per million

Cal- Magnecium sium 

(Ca) (Mg)

7.08 

6.56 

7.06 

4.09 1 4.81 

9.88

8.64 

4.19 1 5.05 

2.14 

3.48 

5.54 

7.98

4.92 

6.94 

6.12 

1.88 

5.28 

4.96

Sodium 

(Na)

3.87 

2.74 

2.65 

3.09 

3.22

3.26 

3.44 

1.91 

1.96 

2.78 

3.57

2.61 

2.96 

1.91 

4.39 

2.87 

2. 13

Potassium 

(K)

0.13 

.13

Bicarbonate 

(HC03)

5.33 

4.67 

4.87 

5.88 

6.49

6.00 

6.36 

2.25 

2.80 

3.82 

a5.50

3.62 

4.54 

3.90 

3.16 

3.62 

3.39

Sulfate 

(S04)

5.62 

4.73 

5.14 

6.35 

6.66

6.25 

6.20 

1.81 

2.69 

4.64 

6.14

3.98 

5.52 

4.29 

3.21 

4.58 

3.73

Chloride 

(Cl)

0. 17 

.16

Fluoride 

(F)

0.02 

.02

Nitrate 

(NOS)

0.02 

.02

Bor

(B

pp

0.1

.1

a. Includes 0. 17 equivalent per million of carbonate (CO3 ).
May 28 -June 3, 1955

June 16 20. .......

June 21-30. .......

July 1 ............

July 2-5. .........

July 6-7. .........

July 8-21.. .......

July 22-Aug. 17... 

Aug. 18-28 .......

Aug. 29-Sept. 4 ... 

Sept. 5-30. .......

Total or weighted 

average c .....

17,050 

27,710

9,570

30, 940

3,610

1 9 QQft

2.680

5,610

4,630 

1,520

387 

518

248. 500

15

--

20

..

4. 

2.00

3.

3.

4.

3.

3.

4.

5. 

6.

7. 

4.04

5.

40 

1.68

78

48

24

20

92

96

70 

52

80 

5.56

18

1.30 

1.09

2.04

.83

1.61

.78

1.61

2.26

3.30 

3.70

5.48 

8.22

2.04

.08

--

.21

..

3.06 

2.69

3.08

2.62

2.82

2.33

2.72

3.56

4.38 

4.92

6.33 

8.00

3.67

2.64 

2.00

2.81

1.60

2.98

1.71

2.77

3.58

4.85 

5.27

7.08 

9.89

3.62

.06

__

--

.25

_.

.01

__

--

.02

__

.04

__

--

.02

__

.

.

b Sum of determined constituents.

c Represents 100 percent of runoff for water year October 1954 to September 1955.
YELLOWSTONE RIVER BASIN Continued

POWDER RIVER NEAR LOCATE, MONT.

LOCATION.--At gaging station at bridge on U. S. Highway 12, at present site of Locate (5 

County, 3 miles upstream from Locate Creek, and 25 miles east of Miles City. 

RECORDS AVAILABLE. Chemical analyses: December 1949 to September 1955. 

Water temperatures: February 1951 to September 1955. 

Sediment records: March 1950 to September 1953.

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 4,010 micromhos Sept, 

Maximum, 57 Mar. 7-8; minimum, 17 Aug. 11-13.

4,010 micromhos Sept.

30; minimu

30, 1955; 

Percent sodium: 

EXTREMES, 1951-55.--Specific conductance: Maximum daily,

Percent sodium: Maximum, 83 Oct. 22-24, 1953; minimum, 17 Aug. 11-13, 1955. 

REMARKS.--Values reported for dissolved solids are the sums of determined constituents unl

analysis composited by discharge. Records of specific conductance of daily samples ava

Records of discharge for water year October 1954 to September 1955 given in WSP 1389.

Date 

of 

collection

Oct. 1 -25, 1954 . . . 

Oct. 26 - Nov. 14 . 

Nov. 15-30 .......

Dec. 1-15.. .......

Dec. 16-31 .......

Jan. 1-31, 1955 . . . 

Feb. 1-28. ........

Mar. 1-6 .........

Mar. 7-8 .........

Mar. 9 ...........

Mar. 10-12 .......

Mar. 13-14 .......

Mar. 15-23 .......

Mar. 24-29 .......

Mar. 30-Apr. 8 ... 

Apr. 9 -30. ........

Runoff 

(acrefeet)

410 

1,210 

2,630 

2,260 

3,010

3,870 

4,250 

1,000 

417 

298 

6,350

7,540 

14, 580 

2,520 

46, 050 

48. 220

Silica 

(Si02) 

ppm

13 

15

Chemical analyses, water year October 1954 to September, 1

Equivalents per million

Calcium 

(Ca)

12 

14 

14 

11.73 

18

1£ 

16 

8.88 

2 

5 

2

4 

9 

13 

9 

10

Magnesium 

(Mg)

.88 

.76 

.80 

7.91 

.80

.48 

.04 

6.48 

.04 

.16 

.20

.12 

.80 

.96 

.92 

.76

Sodium 

(Na)

14.39 

13.22 

10.35 

14.48 

11.22

11.35 

9.04 

8.35 

3.09 

4.09 

2.00

2.70 

5.65 

8.91 

5.04 

6.83

Potassium 

(K)

0.23 

.17

Bicarbonate 

(HCO,)

4.98 

4.74 

4.20 

6.65 

6.49

7.13 

6.16 

5.82 

2.23 

2.69 

1.85

2.61 

2.49 

3.80 

3.18 

2.90

Sulfate 

(SOJ

21.65 

22.48 

19.67 

25.40 

22.48

22.48 

17.90 

16.24 

2.94 

6.31 

2.35

4.16 

12.28 

18.11 

11.24 

14.26

Chloride 

(Cl)

1.07 

1.21 

1.97 

2.37 

1.69

2.06 

1.72 

1.81 

.23 

.62 

.18

.34 

.93 

1.38 

.82 

.79

Fluoride 

(F)

3.03 

.03

Nitrate 

(N03)

0.06 

.08

Bor

(B

pp

0.2

.1

a Residue on evaporation at 180°C.
May 1-2, 1955 .... 

May 3-4 ..........

May 5-16 .........

May 17-22 ........

May 23-June 1 .... 

June 2-10. ........

June 11-18.. ......

June 19-20........

June 21-24.. ......

June 25-26.. ......

June 27-28. .......

June 29 ...........

June 30 - July 11 .. 

July 12 ...........

July 13-16 ........

July 17-25 ........

July 26 ...........

July 27 ...........

1,790 

4,940

13,320

18, 960

17,170 

12,150

7,720

12,300

12,200

3,100

6,380

6,050

22,290 

1,210

2,570

3,200

506

817

17

11.76

4.80

9.96

6.52

6.60

7.80

5.99 3.53

11.04

13.98

9.84

8.90

8.36

11.00

6.68

9.96

15.64

12.52

7.72

7.61

7.13

7.48

5.09

3. 57

4.78

6.26

5.44

7.17

6.78

5.48

3.48

5.91

5.87

7.74

10.27

8.87

6.65.

.16

3.75

3.43

3.46

2.80

2.79

2.82

3.08

3.33

3.51

3.08

3.15

3.47

2.95

3.64

3.49

3.70

3.70

4.33

14.99

8.91

13.53

9.12

7.08

9.33

11.62

12.60

16.76

12.91

10.83

8.33

13.42

8.54

13.95

21.44

17.59

10.10

1.07

.45

1.07

.56

.54

.71

1.04

.59

1.21

.82

.54

.45

.82

.48

.87

1.41

.93

.45

__

-.

--

.-

__

.03

--

..

--

--

--

__

--

--

--

--

--

.06

__

--

--

--

--

..

.17

..

_-

-.

.-

..

-.

..

--

-.

--

a Residue on evaporation at 180°C.
YELLOWSTONE RIVER BASIN--Continued

POWDER RIVER NEAR LOCATE, MONT. Continued

Chemical analyses, water year October 1954 to September 1955--C

Date 

of 

collection

July 28, 1955.

July 29-30 .......

July 31 ..........

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

Aug. 11-13 ......

Aug. 14-31 ......

Sept. 1-29 .......

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

Total or weighted

Runoff 

(acrefeet)

1,170 

2,290 

922

5,700 

4,000 

3,310

484 

11

3f>Q 9f>f>

Silica 

(Si02) 

ppm

12

Equivalents per million

Calcium 

(Ca)

4 

6

4

19 

32 

19

9.98 

28

Magnesium 

(Mg)

80 

76 

44

70 

60 

00

6.02 

32

in AA

Sodium 

(Na)

3.74 

6.22 

5.31

9.74 

6.83 

7.22

13.92 

21.92

R 1Q

Potassium 

(K)

0.28

Bicarbonate 

(HCO,)

4.06 

3.41 

3.24

3.52 

3.36 

3.34

4.23 

3.15

Sulfate 

(SO,)

4.68 

9.78 

6.52

26.02 

36.64 

22.69

25.19 

46.01

Chloride 

(Cl)

0.17 

.31 

.17

1.16 

.73 

.71

1.13 

2.31

n QT

Fluoride 

(F)

0.03

Nitrate 

(NOS)

0.01

Boro

(B) 

ppm

0.23

a Residue on evaporation at 180°C.

b Represents 100 percent of runoff for water year October 1954 to September 1955.
PLATTE RIVER BASIN

NORTH PLATTE RIVER BELOW GUERNSEY RESERVOIR, 

LOCATION.--At bridge on U. S. Highway 26, at Guernsey, Platte County, 0.9 mile downstream 

from Guernsey Dam.

DRAINAGE AREA. 16,200 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: December 1950 to September 1955.

Water temperatures: October 1951, April to September 1952, March to September 1953, Ma

Sediment records: April 1947 to June 1953. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 1,340 micromhos Mar. 7-9; minim

Percent sodium: Maximum, 40 Apr. 18-30; minimum, 24 June 27. 

EXTREMES, 1951-53, May 1954 to September 1955.--Specific conductance: Maximum daily (195

daily, 354 micromhos June 27, 1955.

Percent sodium: Maximum, 40 Apr. 18-30, 1955; minimum, 24 June 27, 1955. 

REMARKS. Values reported for dissolved solids are residues on evaporation. During perio

collected at gaging station. Records of specific conductance of daily samples availab

of discharge for water year October 1954 to September 1955 given in WSP 1390. No appr

sampling station except during periods of heavy local precipitation.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-12, 1954. 

Oct. 13-27...... 

Oct. 28-Nov. 4 . 

Nov. 5-29 ......

Nov. 30-Dec. 2 . 

Dec. 3-6 .......

Dec. 7-31 ......

Jan. 1-31, 1955. 

Feb. 1 28 ......

Mar. 1-31 ......

Runoff 

(acrefeet)

353 

417 

315 

1,040 

333

6,030 

13,810 

799 

645 

1,020

Silica 

(Si02) 

ppm

12 

12

Equivalents per million

Calcium 

(Ca)

e.;

6.4 

6.4 

3.94 

6.6

7.1 

7.6 

8.3 

8.7 

5.24

Magnesium 

(Mg)

2

0 

0 

2.60 

6

4 

8 

6 

6 

3.56

Sodium 

(Na)

3.44 

3.57 

3.57 

3.78 

3.91

4.52 

4.96 

4.87 

5.09 

5.26

Potassium 

(K)

0.16 

.16

Bicarbonate 

(HC03)

3.44 

3.51 

3.54 

3.46 

3.54

3.54 

3.72 

4.41 

4.47 

4.39

Sulfate 

(S04)

5.83 

5.89 

6.00 

6.45 

6.35

7.49 

7.97 

8.02 

8.60 

8.74

Chloride 

(Cl)

0.76 

1.10

Fluoride 

(F)

0.02 

.02

Nitrate 

(NOS)

0.03 

.07

B

(

p

0
PLATTE RIVER BASIN Continued

NORTH PLATTE RIVER BELOW GUERNSEY RESERVOIR, WY

Chemical analyses, water year October 1954 to September 195

Date 

of 

collection

Apr. 1-17, 1955.. 

Apr. 18-30 ......

May 1-15. .......

May 16-June 2 ... 

June 3-26. .......

June 28-July 13 . . 

July 14-16 .......

July 17-19. ......

July 20-Aug. 21 . . 

Aug. 22-Sept. 12. 

Sept. 13-30......

Total or weighted 

average a .....

Runoff 

(acrefeet)

21,090 

25, 160 

13,230 

7,200 

22, 830 

56

30,210 

19,340 

24,140 

245, 400 

146,500 

57,740

637.600

Silica 

(SiO.,) 

ppm

13 

19

Equivalents per million

Calcium 

(Ca)

Magnesium 

(Mg)

7.78 

6.18 

4.78 

4.06 

2.69 1 1.33 

2.64 

1 

4.46 

5.32 

5.04 

4.54 

4.64 

3.19 | 1.81

4.92

Sodium 

(Na)

4.87 

4.17 

2.96 

2.26 

2.13 

.87

2.39 

2.87 

2.17 

1.96 

1.96 

2.35

2.39

Potassium 

(K)

0.11 

.12

Bicarbonate 

(HCO,)

3.75 

2.77 

2.31 

2.20 

2.39 

2.33

2.74 

3.18 

2.98 

2.80 

2.92 

3.10

2.90

Sul-" 

fate 

(SOJ

8.08 

7.08 

5.27 

3.96 

3.54 

1.23

3.91 

4.75 

3.85 

3.64 

3.50 

3.91

4.16

Chloride 

(Cl)

0.39 

.45

Fluoride 

(F)

0.02 

.02

Nitrate 

(NO,)

0.02 

.03

B

a Represents 100 percent of runoff for water year October 1954 to September 1955.
PLATTE RIVER BASIN Continued

PLATTE RIVER AT BRADY, NEBR.

LOCATION. At gaging stations at highway bridges, half a mile and 2$ miles south of Brad

conlluence of North Platte and South Platte Rivers. 

DRAINAGE AREA.--56,900 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: November 1950 to September 1955. 

Water temperatures: March 1951 to September 1955.

Maximum daily, 852 micromhos May 12 (channel 

_-_ ..._ ... . j v «,,1,^ J. 

 - , .>. . 14-19, Feb. 24 to Mar. 24, Ma

Maximum daily, 1,070 micromhos Feb. 19, 1953 

EXTREMES, 1954-55. Specific conductance. .._...__ __, ,

Percent sodium: Maximum, 46 Aug. 1-22; minimum, 33 Feb. 

EXTREMES, 1951-55. Specific conductance

Nov. 26, 1952 (channel 1).

Percent sodium: Maximum, 46 Aug. 1-22, 1955; minimum, 22 Nov. 26, 1952. 

REMARKS. Values reported for dissolved solids are residues on evaporation. Daily sampl

Shr RPPn^=S1 f b y.discharge Composite periods normally identical to those of 

??nnAi« S E I spe^f ^ conductance of daily samples, taken at each of the two ma

Lincoln, Nebr. Records of discharge for water year October 1954 to September 1955 gi

Chemical analyses, water year October 1954 to Septembe

Date 

of 

collection

Oct. 1-31, 1954..

Dec. 29-Jan.l9,1955

Jan. 27-Feb. 4... 

Feb. 5-10 .......

Feb. 11-13 ......

Feb. 14-19 ......

Feb. 20-23 ......

Feb. 24-Mar. 16. 

Mar. 17-24......

Mar. 25-27......

Mar. 28-Apr. 25. 

Apr. 26-May 11 . .

Runoff 

(acrefeet)

8,150 

8,030 

8,930 

10,130 

6,020

4,780 

4,770 

2,290 

3,730 

2,890

10,920 

2,660 

1,770 

11,410 

4,650

Silica 

(Si02) 

ppm

44 

36

Equivalents per million

Calcium 

(Ca)

3. 

2.74 

3. 

4. 

4.

3. 

3. 

4. 

2.59 

4.

3. 

4. 

4. 

3. 

4.

Magnesium 

(Mg)

98 

1.22 

96 

10 

12

78 

98 

30 

1.13 

52

74 

16 

82 

88 

12

Sodium 

(Na)

2.35 

2.13 

2.13 

2.22 

2.52

2.04 

2.30 

2.57 

1.96 

2.78

1.87 

2.04 

2.70 

1.91 

2.22

Potassium 

(K)

0.17 

.23

Bicarbonate 

(HCO,)

3.44 

3.64 

3.65 

3.70 

3.64

3.46 

3.52 

3.80 

3.31 

3.83

3.36 

3.59 

4.02 

3.38 

3.59

Sulfate 

(SOJ

2.48 

2.33 

2.23 

2.37 

2.69

2.23 

2.52 

2.83 

2.12 

3.12

2.10 

2.39 

3.19 

2.31 

2.58

Chloride 

(Cl)

0.34 

.39

Fluoride 

(F)

0.03 

.02

Nitrate 

(NO,)

0.03 

.04

Bo

(

pp

0
PLATTE RIVER BASIN Continued

PLATTE RIVER AT BRADY, NEBR.--Continued

Chemical analyses, water year October 1954 to September 1955- 

Date 

of 

collection

May 12-25, 1955. . 

May 26 -June 26. . . 

June 27 -July 1 ... 

July 2-9 .........

Aug. 1-22 .......

Aug. 23 -Sept. 15. 

Sept. 16-30 .....

Total or weighted 

average .a. . . . .

Runoff 

(acrefeet)

9,140 

10,680 

3,060 

2,770 

53,650

46,070 

4,990 

5,020

226, 500

Silica 

(Si02) 

ppm

42

44

Equivalents per million

Calcium 

(Ca)

3. 

2.69 

3. 

4. 

3.

3. 

3. 

2.59

Magnesium

(MB)

36 

1.23 

56 

30 

)8

36 

36 

1 1.23

3.94

Sodium 

(Na)

2.65 

2.13 

1.70 

2.39 

3.17

3.26 

3.00 

2.57

2.65

Potassium 

(K)

0.26

.28

Bicarbonate 

(HCOS)

3.62 

3.59 

3.23 

3.57 

3.97

4.06 

3.84 

3.92

3.77

Sulfate 

(SOJ

2.85 

2.33 

1.79 

2.66 

2.96

2.77 

2.81 

2.48

2.62

Chloride 

(Cl)

O.o9 

.45

Fluoride 

(F)

0.03 

.03

Nitrate 

(NOJ

0.03 

.02

Bo

(

pp

0.1

.1

a Represents 100 percent of runoff for water year October 1954 to September 1955.
PLATTE RIVER BASIN--Continued

SUPPLY CANAL (TRI-COUNTY DIVERSION) NEAR MAXWELL, 

LOCATION.--At gaging station at Parshall Flume in sec. 28, T. 13 N., R. 29 W., near Maxw

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1955.

Water temperatures: March 1951 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 906 micromhos May 6, 8; minimu

Percent sodium: Maximum, 48 Aug. 1 to Sept. 15; minimum, 39 Feb. 14-19, Feb. 24 to Ma

EXTREMES, 1951-55.--Specific conductance: Maximum daily, 1,210 micromhos Mar. 26, Apr. 

May 15, 1951.

Percent sodium: Maximum, 48 Aug. 1 to Sept. 15, 1955; minimum, 36 Mar. 27 to Apr. 14, 

REMARKS. Values reported for dissolved solids are residues on evaporation. Daily sampl

Composite periods normally identical to those of Platte River at Brady, Nebr. Record

available in regional office at Lincoln, Nebr. Records of discharge for water year O

State Engineer.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-31, 1954. 

Nov. 1-30 ......

Dec. 1-28 ......

Dec. 29-Jan. 19, 

1955..........

Jan. 20-26. .....

Jan. 27- Feb. 4 . 

Feb. 5-10 ......

Feb. 11-13 .....

Feb. 14-19 .....

Feb. 20-23 .....

Feb. 24-Mar. 16 

Mar. 17-24.....

Mar. 25-27.....

Mar. 28-Apr. 25

Runoff 

(acrefeet)

69,820 

55,330 

55,330

41,950 

12, 470 

18, 820

10, 800 

5,290 

13,030 

5,760 

46, 580

16, 460 

4,410 

57, 300

Silica 

(Si02) 

ppm

31 

30

Equivalents per million

Calcium 

(Ca)

Magnesium 

(Mg)

3.iO 

2.45 1.27 

3.80

4.18 

4.48 

4.34

1 

4.52 

4.74 

2.74 | 1.56 

4.90 

4.28 

1 

4.40 

4.98 

4.56

Sodium 

(Na)

2.87 

2.74 

2.83

3.09 

3.48 

3.13

3.30 

3.52 

2.91 

3.74 

2.70

2.96 

3.17 

2.91

Potassium 

(K)

0.26 

.28

Bicarbonate 

(HCO3)

3.57 

3.46 

3.54

3.70 

3.87 

3.69

3.80 

3.90 

3.57 

3.98 

3.51

3.47 

3.64 

3.34

Sulfate 

(804)

2.81 

2.71 

2.79

3.29 

3.77 

3.50

3.77 

4.00 

3.27 

4.31 

3.14

3.56 

4.14 

3.83

Chloride 

(Cl)

0.51 

.56

Fluoride 

(F)

0.03 

.03

Nitrate 

(NO,)

0.02 

.03

Bo

<

pp

0
PLATTE RIVER BASIN Continued

SUPPLY CANAL (TRI-COUNTY DIVERSION) NEAR MAXWELL, NEB

Chemical analyses, water year October 1954 to September 1955

Date 

of 

collection

Apr. 26-May 11,

1955..........

May 12-25 ......

May 26 -June 26 .

June 27 -July 1 . .

July 2-9 ........

July 10-31......

Aug. 1-22 ......

Aug. 23-Sept. 15

Sept. 16-30 .....

Total or weighted

average a. .....

Runoff 

(acrefeet)

44, 450

49, 250

77,480

14,960

23, 230

89, 200

90,050

85,650

43,080

930,700

Silica 

(Si02) 

ppm

__

27

_.

--

34

--

Equivalents per million

Calcium 

(Ca)

Magnesium 

(Mg)

4.86

4.40

2.59 1.45

3.74

4.20

4.08

3.82

3.62

2.35 1.27

4.06

Sodium 

(Na)

3.65

3.35

3.09

2.65

3.44

3.57

3.48

3.39

3.31

3.17

Potassium 

(K)

0.28

_.

_^

.-

.31

--

Bicarbonate 

(HC03)

3.36

3.52

3.44

3.18

3.52

3.59

3.79

3.70

3.31

3.56

Sulfate 

(SO.,)

4.89

4.02

3.39

3.02

3.96

3.91

3.19

3.12

3.12

3.41

Chloride 

(Cl)

0.56

__

.51

--

Fluoride 

(F)

0.03

_

.-

.03

Nitrate 

(NO,)

0.03

_.

_.

.03

--

Bo

(

pp

0

a Represents 100 percent of runoff for water year October 1954 to September 1955.
PLATTE RIVER BASIN--Continued

SOUTH PLATTE RIVER AT JULESBURG, COLO.

LOCATION. At gaging station at bridge on State Highway 51, 0.5 mile southeast of Julesbu

Colorado-Nebraska State line, and 8 miles downstream from Lodgepole Creek. 

DRAINAGE AREA. 22,800 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: October 1945 to September 1955. 

Water temperatures: October 1945 to September 1955.

2,350 micromhos Apr. EXTREMES, 1954-55. Specific conductance: Maximum daily

Percent sodium: Maximum, 47 Apr. 13; minimum, 30 Nov. 11-27.

EXTREMES, 1945-55.--Specific conductance: Maximum daily, 2,350 micromhos Apr.

13; minimu

13, 1955; 

Percent sodium: Maximum, 82 Mar. 1-12, 1947; minimum, 29 Aug. 6-10, 1951, Aug. 19, 195

REMARKS. Values reported for dissolved solids are sums of determined constituents. Reco

available in regional office at Lincoln, Nebr. Records of discharge for water year Oc

Chemical analyses, water year October 1954 to September 1

Date 

of 

collection

Oct. 1-29, 1954. 

Oct. 30-Nov. 10. 

Nov. 11-27

Nov. 28-Dec. ia 

Dec. 14-Jan. 12,

1 QRI\

Jan. 13-31......

Feb. 20 ........

Feb. 21-Mar. 9 . Mar. 10-26. ....

Mar. 27 -Apr. 10

Apr. 13 ........

Am* 1A OO

Apr. 24-May 16 .

'May 19-31......

Runoff 

(acrefeet)

1,960 

1,800 

1,570 

3,210

5,850

4,170 

8,120 

361 

9,560 

6,710

4,030 

371 

319 

1,640 

1,680 

1,080 

3.670

Silica 

(Si02) 

ppm

36 

31

Equivalents per million

Calcium 

(Ca)

13. 

15. 

14. 

11.43

14.

14. 

14. 

16. 

14. 

8.78

13. 

12. 

13. 

13. 

12. 

7. 

12.

Magnesium 

(Mg)

84 

24 

76 

3.95

20

08 

36 

92 

08 

4.66

38 

00 

88 

32 

32 

04 

68

Sodium 

(Na)

6.61 

7.57 

6.31

7.74

7.44

7.52 

7.78 

8.65 

7.65 

7.52

7.35 

7.09 

12. 13 

7.57 

6.70 

4.00 

7.39

Potassium 

(K)

0.49

.36

Bicarbonate 

(HCOS)

6.70

4.62

Sulfate 

(SOJ

15.09

14.99

Chloride 

(Cl)

1.95

1.81

Fluoride 

(F)

0.03

.04

Nitrate 

(NO,)

0.07

.05

Bor

(B

ppm

0.2

.2
PLATTE RIVER BASIN Continued

SOUTH PLATTE RIVER AT JULESBURG, COLO.--Continu

Chemical analyses, water year October 1954 to September 1955--C

Date 

of 

collection

June 1-16, 1955. 

June 17-18

June 19-July 18 . 

July 19-Aug. 26 . 

Aug. 27-Sept. 11 

Sept. 12-30 .....

Total or weighted

Runoff 

(acrefeet)

4,700 

1,440 

7,770 

1,710 

567 

827

73, 100

Silica 

(Si02) 

PPm

33

44

--

Equivalents per million

Calcium 

(Ca)

Magnesium 

(Mg)

7.73 4.09 

8.88 

12.40 

12.00 

11.38 

8.88 3.72

13. 36

Sodium 

(Na)

6.48 

5.52 

7.00 

6.70 

6.83 

7.13

7.26

Potassium 

(K)

0.38

.43

Bicarbonate 

(HC03)

4.47

4.05

Sulfate 

(SOJ

12.18

14.05

Chloride 

(Cl)

1.55

1.78

Fluoride 

(F)

0.04

.04

Nitrate 

(N03)

0.06

.05

Boro

(B) 

PPm

0.23

.24

a Represents 100 percent of runoff for water year October 1954 to September 1955.
KANSAS RIVER BASIN

REPUBLICAN RIVER ABOVE MEDICINE CREEK AT CAMBRIDGE, 

LOCATION.--At bridge on State Highway 47, 1 mile upstream from gaging station at Cambridg

from Medicine Creek, and 2.3 miles upstream from Cambridge diversion dam. 

DRAINAGE AREA. 13,200 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1955.

Water temperatures: December 1950 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 731 micromhos Jan. 11; minimum 

Percent sodium: Maximum, 31 Sept. 7-8, 19-21; minimum, 14 June 17-20. 

EXTREMES, 1950-55. Specific conductance: Maximum daily (1951-55), 830 micromhos Aug. 21

Percent sodium: Maximum, 31 Sept. 7-8, 19-21, 1955; minimum, 9 July 11-14, 1953.

REMARKS. Values reported for dissolved solids are residues on evaporation. Daily sample

Records of specific conductance of daily samples available in regional office at Linco

tracting the discharge of Medicine Creek at Cambridge from that of the Republican River 

Republican River at Cambridge and Medicine Creek at Cambridge for water year October 1

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-31, 1954.. 

Nov. 1-30 .......

Dec. 1-28 .......

Dec.29-Jan.l3,1955 

Jan. 14 -Feb. 16...

Feb. 17-19 .......

Feb. 20-Mar. 1...

Mar. 26 .........

Mar. 27-Apr. 19 . .

Apr. 20-May 17 . . 

May 18-21 .......

Runoff 

(acrefeet)

5,650 

5,800 

5,890 

2,920 

7,360

1,180 

3,490 

2,540 

9,260 

323 

8,220

3,150 

885 

859

Silica 

(Si02) 

ppm

44 

43

Equivalents per million

Calcium 

(Ca)

4.1 

4.4 

3.04 

5.C 

4."

3.! 

4.! 

3.( 

2.30 

4.S 

4J

4.'

3.:

4.

Magnesium 

(Mg)

6

8 

1.50 

10

rs 

>o

>4 

50 

1.74 

)6 

0

10 

iO 

36

Sodium 

(Na)

1.26 

1.22 

1.22 

1.39 

1.22

.96 

1.30 

.91 

1.00 

1.26 

1.13

1.43 

1.17 

1.22

Potassium 

(K)

0.36 

.33

Bicarbonate 

(HCO,)

4.54 

4.87 

4.95 

5.49 

5.05

3.82 

4.93 

3.72 

a4.38 

a 5. 38 

4.51

4.88 

3.64 

4.49

Sulfate 

(SOJ

0.81 

.79 

.81 

.94 

.87

.69 

.90 

.67 

.69 

.87 

.75

.94 

.92

.77

Chloride 

(Cl)

0.27 

.21

Fluoride 

(F)

0.05 

.05

Nitrate 

(NO,)

0.08 

.07

Bo

(

pp

O

a Includes 0. 23 equivalent per million of carbonate (CO,,).
KANSAS RIVER BASIN Continued

REPUBLICAN RIVER ABOVE MEDICINE CREEK AT CAMBRIDGE, NE

Chemical analyses, water year October 1954 to September 1955-

Date 

of 

collection

May 26-29, 1955.. 

May 30- June 16 

June 17-20 .......

June 28 -July 27 ... 

July28-Aug. 10 .. 

Aug. 11-14.......

Aug. 15-16.......

Aug. 23-25.......

Sept. 7-8 ........

Sept. 12-14 ......

Sept. 19-21 ......

Sept. 22-26 ......

Sept. 27-30 ......

Total or weighted 

average ^. . . .

Runoff 

(acrefeet)

2,480 

3,970 

15,600 

4,200

3,070 

2,310 

879 

38 

77 

22

56 

220 

974

578

92,010

Silica 

(Si02) 

ppm

43 

27

__

Equivalents per million

Calcium 

(Ca)

3 

2.35 

2 

3

3 

3 

2 

3 

3 

3

3 

3 

2.00 

3

3

Magnesium 

(Mg)

00 

1.39 

58 

86

80 

56 

92 

56 

76 

66

60 

42 

1.06 

64

86

Sodium 

(Na)

0.87 

1.13 

.43 

1.04

1.30 

1.81 

.91 

1.30 

1.57 

1.65

1.57 

1.52 

.87 

1.22

1.04

Potassium 

(K)

0.46 

.36

Bicarbonate 

(HCO,,)

3.41 

4.26 

2.88 

4.31

4.26 

4.02 

3.33 

4.02 

4.38 

4.03

4.00 

3.98 

3.21 

4.10

4.24

Sulfate 

(SOJ

0.54 

.71 

.17 

.75

.96 

1.37 

.67 

.98 

1.10 

1.35

1.19 

.87 

.67

.75

0.69

Chloride 

(Cl)

0.20 

.17

__

Fluoride 

(F)

0.04 

.03

__

Nitrate 

(NO,)

0.06 

.08

__

B

p

0.

.

b Represents 100 percent of runoff for water year October 1954 to September 1955.
PART 7. LOWER MISSISSIPPI RIVER BASIN

ARKANSAS RIVER BASIN 

ARKANSAS RIVER BELOW JOHN MARTIN RESERVOIR, 

LOCATION. At gaging station 1 mile upstream from Caddoa Creek, If miles downstream from 

southeast of Hasty.

DRAINAGE AREA. 18,917 square miles, of which 785 square miles is probably noncontributin

RECORDS AVAILABLE.--Chemical analyses: August 1942 to August 1943, October 1945 to July 

1951 to September 1955 (daily samples). 

Water temperatures: January 1951 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum observed, 5,180 micromhos Apr. 21; min

Percent sodium: Maximum, 41 Mar. 1-10, Apr. 21 to May 10, 21-23; minimum, 23 July 1-10

EXTREMES, 1951-55.--Specific conductance: Maximum observed, 5,180 micromhos Apr. 21, 195

Percent sodium: Maximum, 42 Feb. 1-10, 1954; minimum, 23 July 1-10, 1955.

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

district office at Albuquerque, N. Mex. Records of discharge for water year October 

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-6, 8-10, 

1954 ...........

Oct. 7 ..........

Nov. 11-20 ......

Dec. 11-20 ......

Dec. 21-31 ......

Jan. 1-10, 1955 .. 

Jan. 11-20.......

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

Feb. 11-20 ......

Feb. 21-28 ......

Runoff 

(acrefeet)

422 

182 

462 

375 

351 

393 

466

482 

478 

363 

60 

41 

41

39 

33 

22

Silica 

(Si02) 

ppm

13 

21

Equivalents per million

Calcium 

(Ca)

17.51 

12.38 

19.41 

19.21 

19.61 

19.21 

19.01

18.41 

19.01 

19.61 

20.41 

18.41 

19.01

17.81 

17.02 

16.17

Magnesium 

(Mg)

11.60 

6.74 

14.64 

14.06 

13.90 

14.31 

13.90

14.64 

14.64 

14.47 

14.88 

15.62 

15.62

16.20 

16.45 

16.53

Sodium 

(Na)

18.44 

9.26 

19.18 

19.83 

19.65 

19.57 

19.39

19.79 

20.09 

20.61 

22.48 

21.52 

21.96

21.52 

21.65 

20.96

Potassium 

(K)

0.20

.20

Bicarbonate 

(HCOS)

4.56 

2.98

5.54 

5.79 

5.70 

6.05 

6.36 

6.19

6.33 

6.47 

6.24

Sulfate 

(SOJ

40.18

47.26

Chloride 

(Cl)

2.99

3.86

Fluoride 

(F)

0.05

.04

Nitrate 

(NO,)

0.05

.12

Bo

(B

pp

0
ARKANSAS RIVER BASIN Continued

ARKANSAS RIVER BELOW JOHN MARTIN RESERVOIT, COLO. 

Chemical analyses, water year October 1954 to September 1955--

Date 

of 

collection

Mar. 1-10, 1955.. 

Mar. 11-20 ......

Mar. 21-31 ......

Apr. 1-10 .......

Apr. 11-20 ......

Apr. 21-30 ......

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

May 11-20.......

May 21-23 .......

May 24-31 .......

June 1-2, 4-10 . ..

June 11-20. ......

July 1-10........

July 11-20.......

July 21-31 .......

Aug. 1-7, 9-10... 

Aug. 8 ..........

Aug. 11-20 ......

Aug. 21-31 ......

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

Sept. 11-20......

Sept. 21-30......

Total or weighted 

average .......

Runoff 

(acrefeet)

118 

193 

224

175 

6,240 

488 

454 

673 

31 

5,620

3,440 

329 

9,220 

14,620 

24, 040 

23,800 

26,990

21,120 

960 

22,530 

25,420 

22,310 

20,540 

14,670

248, 500

Silica 

(SiCg 

ppm

11 

12

Equivalents per million

Calcium 

(Ca)

15.47 

15.27 

16.07

17.22 

16.27 

18.01 

17.81 

14.87 

15.87 

9.78

9.13 

14.67 

7.19 

7.29 

7.78 

7.68 

8.18

8.18 

23.55 

8.33 

8.03 

7.83 

7.93 

8.13

8.53

Magnesium 

(Mg)

14.31 

12.34 

13.08

13.32 

13.49 

15.21 

13.90 

11.51 

13.32 

5.59

5.18 

8.55 

3.78 

3.87 

4.36 

4.11 

3.95

4.28 

14.64 

4.36 

4.28 

4.36 

4.44 

4.52

4.77

Sodium 

(Na)

20.65 

18.05 

19.26

18.18 

19.92 

22.70 

22.22 

16.83 

20.44 

6.00

4.70 

12.00 

4.48 

4.48 

3.70 

4.35 

4.52

4.70 

25.26 

4.78 

4.70 

4.65 

4.78 

5.00

5.48

Potassium 

(K)

0.22 

.17

Bicarbonate 

(HCO,)

5.95 

4.49 

4.38

4.41 

3.79 

4.39 

4.13 

4.93 

5.34 

6.42

5.44 

5.05 

2.10 

2.20 

2.13 

2.21 

2.34

2.29 

4.92 

2.38 

2.34 

2.36 

2.39 

2.44

2.54

Sulfate 

(SOJ

40.60 

13.10

Chloride 

(Cl)

3.10 

.51

..

Fluoride 

(F)

0.05 

.03

..

Nitrate 

(NO,)

0.05 

.09

Bor

(B

ppm

0.4

.
ARKANSAS RIVER BASIN--Continued

ARKANSAS RIVER AT ARKANSAS CITY, KANS.

LOCATION. At gaging station at Chestnut Avenue Highway bridge, half a mile west of Arkansa

stream from Walnut River, and at mile 701.9.

DRAINAGE AREA. 43,713 square miles (revised), of which about 7,607 square miles does not c

RECORDS AVAILABLE. Chemical analyses: October 1951 to September 1955.

Water temperatures: October 1951 to September 1955.

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 4,640 micromhos Aug. 7; minimum d

Percent sodium: Maximum, 79 Apr. 28; minimum, 36 May 27-29. 

Sodium adsorption ratio: Maximum, 16 Aug. 7; minimum, 1.3 May 27-29.

EXTREMES, 1951. Specific conductance: Maximum daily, 4,720 micromhos Oct. 5, 1953; minimu

Percent sodium: Maximum, 79 Apr. 28, 1955; minimum, 36 May 27-29, 1955.

Sodium adsorption ratio: Maximum, 16 Oct. 5, 1953, Aug. 7, 1955; minimum, 1.3 May 27-29, 

REMARKS.--Values reported for dissolved solids are residues on evaporation at 180°C. Recor

available in district office at Oklahoma City, Okla. Records of discharge for water yea

WSP 1391.

Chemical analyses, water year October 1954 to September 19

Date 

of 

collection

Oct. 1-6, 1954.. 

Oct. 7-10 ......

Oct. 11-20 .....

Oct. 21-27 .....

Oct. 28-31 .....

Nov. 1-10 ......

Nov. 11-20 .....

Nov. 21-30 .....

Dec. 1-10 ......

Dec. 11-20 .....

Dec. 21-31 .....

Jan. 1-10, 1955. 

Jan. 11-18 .....

Jan. 19-20 .....

Jan. 21-31......

a Includes 0. 20 

b Includes 0. 53

Runoff 

(acrefeet)

532 

849 

1,410 

912 

1,320 

2,350 

3,210 

3,080

3,280 

3,540 

5,120 

5,690 

4,710 

1,260 

6,360 

equivalents f 

equivalents |

Silica 

(SiOs) 

ppm

17 

13

14

14 

er milli 

>er milli

Equivalents per million

Calcium 

(Ca)

6.24 

4.79 

5.19 

5.99 

4.14 

5.09 

5.19 

5.19

5.19 

5.19 

5.59 

5.19 

5.59 

5.19 

5.29 

on of cai 

on of ca

Magnesium 

(Mg)

2.36 

1.91 

2.21 

2.41 

1.86 

2.11 

1.61 

2.21

1.81 

1.81 

2.21 

2.11 

1.81 

1.51 

2.31 

rbonate ( 

rbonate (

Sodium 

(Na)

21.05 

16.22 

21.13 

20.70 

12.35 

17.87 

17.83 

16.70

16.35 

17.70 

18.70 

17.78 

17.87 

16.35 

16.87 

CO,).

cos).

Potassium 

(K)

0.20 

.18

.31 

.23

Bicarbonate 

(HCO,)

4.26 

3.44 

a3.74 

b4.06 

a3.31 

3.87 

3.72 

3.92

3.88 

3.88 

cS.87 

3.82 

3.87 

3.67 

3.97

Sulfate 

(SOJ

3.37 

2.96 

2.87 

3.23 

2.46 

3.04 

2.94 

3.06

2.96 

3.12 

3.39 

3.35 

3.52 

2.96 

3.54

c

Chloride 

(Cl)

23.27 

16.36 

21.86 

21.15 

12.41 

18.33 

16.92 

17.63

16.92 

16.92 

19,04 

18,33 

18.33 

15.93 

16.92

Include.

Fluoride 

(F)

0.03 

.03

3 0.07

Nitrate 

(NO,)

0.16 

.24 

.23 

.15 

.19 

.29 

.24 

.24

.26 

.21 

.13 

.21 

.26 

.27 

.26 

;quival<

Boro

(B) 

PPm

0.28 

.24

.00

.25 

?nts p
ARKANSAS RIVER BASIN Continued

ARKANSAS RIVER AT ARKANSAS CITY, KANS.--Continued 

Chemical analyses, water year October 1954 to September 1955--C

Date

of 

collection

Feb. 1-10, 1955.. 

Feb. 11-14 ......

Feb. 15-20 ......

Feb. 21-28 .....

Mar. 1-10.......

Mar. 11-13 .....

Mar. 14-20 .....

Mar. 21-31......

Apr. 1-10 ......

Apr. 11-20 ......

Apr. 21-22 ......

Apr. 23-27,29-30 

Apr. 28 .........

May 1-10 .......

May 11-21 .......

May 22-25 .......

May 26 ..........

Mav 97 9Q

May 30-31 .......

June 11... ........

Runoff 

(acrefeet)

7,330 

2,650 

4,740 

5,970 

8,300 

2,330 

4,900 

7,620

8,280 

8,450 

3.170 

7,020 

908

5,360 

6,740 

4,450 

12,240 

41,830 

8,610

18,270 

8,590 

17,490 

5,180 

4,980 

4 340

Silica 

(Si02) 

ppm

18

16 

10

18

Equivalents per million

Calcium 

(Ca)

4.79 

5.39 

4.99 

5.39 

5.99 

5.59 

5.59 

5.34

5.09 

5.44 

3.89 

4.89 

6.19

5.19 

5.29 

3.69 

2.99 

1.74 

3.29

4.79 

2.54 

1.80 

3.34 

3.59 

3 5>n

Magnesium 

(Mg)

1.61 

2.01 

1.41 

1.91 

1.71 

2.21 

2.41 

2.66

1.91 

1.56 

1.51 

3.11 

2.01

2.51 

1.91 

1.51 

1.11 

.75 

1.01

.41 

1.06 

1.40 

1.26 

1.41 

1.31

Sodium 

(Na)

15.13 

17.74 

14.57 

17.22 

16.92 

18.05 

19.83 

17.92

18.09 

17.92 

11.35 

17.05 

30.87

21.13 

19.39 

11.87 

5.13 

1.43 

4.35

6.26 

3.74 

2.74 

5.22 

7.96 

7.39

Potassium 

(K)

0.15

.18 

.19

.22

Bicarbonate 

(HCO,)

3.49 

d3.93 

3.70 

3.82 

4.08 

4.08 

3.83 

4.06

3.79 

3.65 

3.23 

3.80 

3.80

3.90 

3.57 

2.88 

2.69 

1.93 

2.43

2.82 

2.49 

2.23 

2.62 

2.65 

2.69

Sulfate 

(SO,)

3.23 

3.66 

3.27 

3.98 

4.41 

4.35 

4.77 

4.54

4.43 

4.37 

3.00 

4.12 

4.58

4.77 

1.27 

2.62 

1.96 

.77 

2.71

3.19 

1.79 

1.48 

2.96 

2.73 

2.35

Chloride 

(Cl)

15.00 

17.63 

14.10 

16.22 

16.92 

16.22 

19,04 

18.33

16.92 

17.77 

11.00 

16.64 

29.90

20.31 

21.01 

12.18 

4.51 

1.30 

3.84

5.47 

2.93 

2.20 

4.29 

6.83 

7.19

Fluoride 

(F)

0.02

.02 

.05

.03

Nitrate 

(NO,)

0.24 

.21 

.24 

.19 

.16 

.18 

.16 

.16

.15 

.11 

.06 

.10

.08 

.03 

.07 

.03 

.03

.06 

.06 

.04 

.12 

.16 

.13

Boro

(B) 

ppm

0.03

.26 

.16

.42

d Includes 0.17 equivalents per million of carbonate (CO,).
June 12-18, 1955.

June 21-22, 24-25 

June 23, 26-28 . .

July 1 ...........

July 2-10 .......

July 11-20.......

July 21-31 .......

Aug. 1-6, 8-10... 

Aug. 7 ..........

Aug. 11-20 ......

Aug. 21-23, 26-31 

Aug. 24-25 ......

Sept. 1-10 ......

Sept. 11, 13-20 .. 

Sept. 12.........

Sept. 21-25......

Sept. 26-28......

Sept. 29-30......

Total or weighted 

average. ......

27,870 

29,120

26,900 

22,690 

13,670

3,550

19,000

11,640

9,120

5,070 

545

4,550

2,760 

772

2,330

2,040 

405

1,270

9,760

21,780

468,200

--

--

13

--

1^

--

-.

4.14 

1.70

2.40 

2.94 

2.00 3 14

4,39

5.49

4.89

5.19 

6.99

4.74

5.29 

4.39

6.39

6.69 3 10

6.49

2 

in

1.75

3.64

1.66 

.70

.90 

1.26 

.90

1.66

2.41

2.51

2.91

2.71 

3.61

2.66

2.91 

2.61

3.41

2.71 

1.61

3.71

on

.65

1.48

9.57 

1.91

3.09 

4.44 

2.70

5.52

10.52

18.05

14.35

17.26 

36.09

17.26

21.26

1 7 99

23.87

23.39 

10.61

23.74

4.44

1.87

9.26

--

--

.06

--

.18

--

__

3.15 

1.77

2.23 

2.62 

1.84

2.56

3.28

2.95

3.67

3.67 

a4.00

3.67

3.24 

3.08

4.13

4.39 2 R9

4.72

2.33

1.90

2.87

3.66 

.85

1.27 

1.87 

1.15

2.56

4.00

4.60

4.39

4.64 

6.60

3.91

4.54 

3.98

4.29

4.27 

2.37

3.77

1.39

.67

2.58

8.60 

1.64

2.71 

4.03 

2.51

5.08

9.73

19.60

13.82

17.63 

34.69

16.92

21.72 

17.20

25.10

24.11 

10.72

24.54

4.09

1.64

8.97

--

--

.02

--

.02

--

-.

.11 

.06

.08 

.10 

.06

.13

.10

.02

.10

.10

.08

.13 

.13

.16

.13 

.16

.13

.06

.05

0.10

-

-

.19

-

.29

-

-

.

a Includes 0.20 equivalents per million of carbonate (CO,).
ARKANSAS RIVER BASIN--Continued 

ARKANSAS RIVER AT RALSTON, OKLA.

LOCATION. At gaging station at bridge on State Highway 18 at Ralston, Pawnee County, 2 

upstream from Grayhorse Creek. 

DRAINAGE AREA. 54,227 square miles. 

RECORDS AVAILABLE. Chemical analyses: January 195.0 to September 1955.

Water temperatures: January 1950 to September 1955.

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 7,510 micromhos Sept, 14; mini

Percent sodium: Maximum, 83 June 23-25; minimum, 42 May 26-29.

Sodium adsorption ratio: Maximum, 21 June 23-25, Sept. 11-16; minimum, 1.4 May 10. 

EXTREMES, January 1950 to September 1955. Specific conductance: Maximum daily, 7,510 m

316 micromhos May 10, 1955.

Percent sodium: Maximum, 86 May 30, 1954; minimum, 36 July 18-20, 1950. 

Sodium adsorption ratio, 1951-55: Maximum, 24 May 30, 1954; minimum, 1.4 May 10, 1955

REMARKS. Values reported for dissolved solids are residues on evaporation at 180°C. Re

available in district office at Oklahoma City, Okla. Records of discharge for water 

in WSP 1391.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-8, 1954.....

Oct. 9-10 .........

Oct. 11-13,15-20 .. 

Oct 14 ............

Oct. 21-24, 31.....

Oct. 25-30 ........

Nov. 11-20........

Dec. 1-10.........

Dec. 11-20........

Dec. 21-31........

Jan. 1-10, 1955.... 

Jan. 11-20 ........

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

Runoff 

(acrefeet)

1,330 

649 

4,750 

1,720 

1,530 

4,940 

4,200 

3,330 

3,180

3,270 

3,960 

5,750 

6,100 

6,810 

7.130

Silica 

(Si02) 

ppm

5.0

5.5 

4.0

Equivalents per million

Calcium 

(Ca)

4.89 

4.14 

4.79 

3.29 

5.09 

3.69 

4.99 

5.39 

5.89

6.39 

6.19 

5.34 

6.19 

6.19 

6.04

Magnesium 

(Mg)

2.51 

1.36 

1.81 

1.23 

3.71 

1.91 

1.91 

2.31 

1.91

1.71 

1.61 

2.66 

2.01 

2.61 

3.16

Sodium 

(Na)

19.70 

14.83 

16.74 

9.57 

18.39 

13.39 

19.31 

21.52 

20.52

20.31 

19.92 

18.09 

19.79 

20.00 

20.22

Potassium 

(K)

0.18

0.23 

.24

Bicarbonate 

(HCOS)

2.82 

2.20 

2.41 

1.64 

a2.98 

b2.16 

3.23 

b3.36 

3.82

3.92 

3.95 

b3.64 

a3.87 

3.79 

3.80

Sulfate 

(SOJ

3.33 

2.33 

2.44 

1.35 

3.06 

2.19 

2.77 

3.10 

3.25

3.25 

3.27 

3.10 

3.58 

3.79 

3.70

Chloride 

(Cl)

21.86 

16.58 

19.04 

11.00 

21.15 

14.05 

19.74 

21.86 

21.15

20.45 

20.45 

19.04 

20.45 

21.15 

21.15

Fluoride 

(F)

0.03

Nitrate 

(NOS)

0.05 

.04 

.05 

.21 

.02 

.05 

.10 

.04 

.04

.06 

.08 

.08 

.19 

.16 

.11

Bor

(B

ppm

0.1

.0

.0

a Includes 0.20 equivalent per million of carbonate (COt). 

b Includes 0.07 equivalent per million of carbonate (COi).
Feb. 1-10, 1955... 

Feb. 11-20... ....

Feb. 21-24.......

Feb. 25-28. ......

Mar. 1-10........

Mar. 11-14, 16-19 

Mar. 15..........

Mar. 20..........

Mar. 21-31.......

Apr. 1-10........

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

Apr. 21-23.......

Apr. 24-30.......

May 1-7..........

May 8. ...........

May 9 ............

May 10...........

May 11-12........

May 13-14........

May 15-16, 19 .... 

May 17-18........

May 20...........

May 21-23........

May 24-25........

May 26-29........

May 30-31........

June 2-7. .........

June 8. 10. .......

8,650 

8,300

4,170

3,900

9,150

6,390 

1,150

1,090

10,160

8,510

7,960

2,250

8,640

6,220

1,340

11,680

15,910

25,820

9,180

6,430 

3,750

8,250

44,870

13,430

172, 600

49,510

12,100

46, 550

20.250

5.0

7.5

2.5

c Includes 0.13 equivalent per million of carbonate (CO»). 

d Includes 0.17 equivalent per million of carbonate (CO,).

5.39

6.19

5.59

6.39

5.69

5.79

4.79

3.79

5.29

5.49

4.89

4.59

3.99

4. '49

3.74

2.30

1.30

1.30

2.25

2.99

3.44

1.90

1.30

2.25

1.60

2.54

3.39

5.59

4.09

2.61

2.01

2.21

2.81

2.21

2.61

1.51

1.11

2.51

2.61

2.71

2.61

2.01

2.41

2.06

.82

.46

.66

1.15

1.51

1.56

.50

.50

1.15

.60

.66

1.51

1.71

1.51

18.70

19.96

18.48

21.48

20.09

20.09

15.00

10.78

18.61

19.26

17.09

19.13

14.65

17.18

11.96

2.83

1.35

1.83

5.31

9.74

12.48

2.87

2.09

6.78

1.61

3.52

12.52

32.61

19.83

--

.13

.17

_

.20

--

__

-_

--

.-

__

..

._

__

--

3.62

C3.67

d3.72

3.61

3.46

3.67

2.65

2.43

3.75

3.75

3.46

3.10

2.64

3.62

2.20

2.36

1.44

1.47

2.10

2.43

2.59

1.80

1.34

2.49

1.70

2.62

2.10

2.59

2.56

3.27

3.89

3.58

4.02

3.87

4.31

3.12

2.39

3.96

4.31

3.98

4.37

3.64

4.10

2.48

.65

.50

.56

1.25

2.14

2.46

.62

.56

1.31

.44

1.19

2.19

4.52

3.14

19.74

20.45

18.33

23.27

20.45

21.15

15.23

10.21

18.33

19.74

18.33

19.46

14.95

17.91

13.68

3.07

1.16

1.81

5.53

9.45

12.64

2.82

2.03

6.35

1.72

2.76

13.54

32.43

19.74

--

.03

.03

_

.02

_

_-

__

.-

__

.18

.18

.19

.14

.07

.04

.13

.12

.07

.07

.05

.13

.10

.07

.06

.02

.07

.05

.03

.05

.07

.08

.03

.05

.04

.05

.06

.08

.
ARKANSAS RIVER BASIN--Continued

ARKANSAS RIVER AT RALSTON, OKLA. Continued 

Chemical analyses, water year October 1954 to September 1955-

Date 

of 

collection

June 11-17.......

July 1 ...........

July 2-3 .........

July 4-6 .........

July 7, 9........ .

July 8 ...........

July 10 ..........

July 11-20 .......

July 21-22, 27-31 

July 23-26 .......

Aug. 1-3, 6-10...

Aug. 11-12, 14-20 

Aug. 13..........

Aug. 21-29, 31 ... 

AUE . 30 ..........

Runoff 

(acrefeet)

14,600 

45,740 

25,470 

35,110 

46,410 

30, 150 

56, 530 

66,960

11,390 

19,680 

18,310 

12,280 

7,560 

5,160 

39,070 

18,150 

12, 000

12,710 

3,170 

1,920 

12, 040 

2,120 

8,160 

803

Silica 

(Si02) 

ppm

8.0

Equivalents per million

Calcium 

(Ca)

3.09 

4.99 

4.39 

2.10 

1.65 

2.94 

5.59 

5.19

4.99 

4.14 

5.19 

4.24 

3.44 

5.19 

5.29 

5.19 

4.79

4.79 

2.10 

4.09 

4.09 

3.29 

4.49 

5.29

Magnesium 

(Mg)

1.31 

2.21 

2.01 

.80 

.85 

1.66 

3.21 

2.61

2.21 

1.86 

2.61 

2.16 

1.76 

2.81 

2.55 

3.21 

2.61

2.61 

.80 

1.81 

2.41 

1.71 

2.71 

3.11

Sodium 

(Na)

11.74 

27.92 

21.52 

6.09 

4.00 

16.39 

44.35 

28.48

20.22 

15.48 

19.44 

12.87 

9.91 

17.92 

19.13 

20.39 

17.44

19.48 

5.52 

14.22 

15.74 

9.61 

18.57 

24.83

Potassium 

(K)

0.15

Bicarbonate 

(HCOj)

2.29 

2.75 

2.82 

1.94 

1.64 

1.70 

2.03 

2.23

2.36 

2.29 

2.75 

2.69 

2.62 

2.88 

3.57 

2.98 

2.95

2.88 

1.51 

2.39 

2.72 

2.43 

2.82 

b2.82

Sulfate 

(SOJ

2.10 

4.29 

3.25 

1.04 

1.23 

2.19 

5.77 

4.81

4.29 

3.35 

4.41 

3.44 

2.52 

4.46 

3.52 

4.60 

3.93

3.93 

1.25 

2.66 

3.21 

1.98 

3.41 

3.83

Chloride 

(Cl)

11.42 

28.20 

21.29 

6.06 

3.84 

16.64 

45.13 

28.20

19.74 

15.37 

19.46 

13.40 

9.45 

18.61 

20.59 

21.43 

17.20

19.88 

5.78 

15.09 

16.92 

10.44 

20.31 

26.79

Fluoride 

(F)

0.02

Nitrate 

(N03)

0.09

.14 

.09 

.08 

.10

.09

.16 

.13 

.07 

.07 

.10 

.15 

.02 

.05 

.05

.06 

.11 

.06 

.05 

.15 

.07 

.08

Bo

(B

pp

0.0

b Includes 0.07 equivalent per million of carbonate (CO,).
Sept. 1-10, 1955.. 

Sept. 11-16.......

Sept. 17-20. ......

Sept. 21-24.......

Sept. 25-29.......

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

Total or weighted 

average .......

5,130 

3,880

1,700

1,310

2,210

1,300

1,108,000

-

__

4.89 

6.59

5.09

5.19

4.59

3.34

3.64

2.71 

3.31

2.91

3.11

2.81

1.66

1.64

19.39 

46.09

32.31

30.35

22.22

11.61

15.05

-

__

3.08 

2.36

2.62

2.95

2.98

2.36

2.38

3.44 

6.20

4.44

4.27

3.35

2.31

2.64

20.73 

47.95

33.84

31.02

23.27

11.99

15.26

-

..

__

.03

.01

.18

..
ARKANSAS RIVER BASIN--Continued

CIMARRON RIVER AT PERKINS, OKLA.

LOCATION. At gaging station at bridge on State Highway 40, 1 mile south of Perkins, Pay

and 4 miles downstream from Wildhorse Creek. 

DRAINAGE AREA. 17,825 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1952 to September 1955.

Water temperatures: October 1952 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 31,800 micromhos Feb. 18, 20; 

Percent sodium: Maximum, 94 Feb. 18-20; minimum, 61 May 10, 20.

Sodium adsorption ratio: Maximum, 98 Feb. 18-20; minimum 3.0 May 20. 

EXTREMES, 1952-55.--Specific conductance: Maximum daily, 31,800 micromhos Feb. 18, 20, 

Percent sodium: Maximum, 94 Feb. 18-20, 1955; minimum, 61 May 10, 20, 1955.

Sodium adsorption ratio: Maximum, 98 Feb. 18-20, 1955; minimum, 3.0 May 20, 1955.

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

district office at Oklahoma City, Okla. Records of discharge for water year October 

Chemical analyses, water year October 1954 to Septemb

Date 

of 

collection

Oct. 1, 1954.....

Oct. 2-7 ........

Oct. 11 .........

Oct. 12-13 ......

Oct. 14 .........

Oct. 15-16 ......

Oct. 17-20 ......

Oct. 21-23 ......

Oct. 24-28 ......

Oct. 29-31 ......

Runoff 

(acrefeet)

4.6 

28 

9.3 

1.8 

1,160 

151

81 

63 

43 

50 

22

Silica 

(Si02) 

ppm

--

Equivalents per million

Calcium 

(Ca)

9.13 

11.33 

9.93 

9.53 

1.70 

2.10

3.19 

4.99 

6.79 

8.38 

9.48

Magnesium 

(Mg)

5.83 

6.99 

5.81 

3.63 

.30 

.60

1.61 

2.61 

2.41 

3.02 

4.32

Sodium 

(Na)

i01.32 

121.32 

99.14 

90.88 

4.00 

6.87

15.00 

32.22 

44.35 

55.66 

66.53

Potassium 

(K)

--

Bicarbonate 

(HCOS)

a3.75 

2.08 

2.10 

b2.23 

1.54 

cl.61

b2.03 

d2.88 

a3.24 

a3.41 

e3.57

Sulfate 

(S0<)

6.37 

7.14 

6.66 

6.18 

.79 

1.19

2.08 

3.31 

4.08 

4.27 

4.91

Chloride 

(Cl)

105.48 

128.61 

108.02 

97.02 

3.44 

6.77

15.51 

32.43 

45.13 

59.23 

70.51

Fluoride 

(F)

--

Nitrate 

(NO,)

0.12 

.07

.05 

.04 

.03 

.02

B

p

a Includes 0.27 equivalent 

b Includes 0.13 equivalent 

c Includes 0.07 equivalent 

d Includes 0.20 equivalent 

e Includes 0.33 equivalent

per million of carbonate (CO,). 

per million of carbonate (CO»). 

per million of carbonate (CO»). 

per million of carbonate (CO,). 

per million of carbonate (CO,).
Nov. 1-4, 7, 1954 

Nov. 5-6, 8-10.. . 

Nov. 11-20......

Nov. 21-30......

Dec. 1-10.......

Dec. 11-20......

Dec. 21-27......

Dec. 28-29......

Dec. 30-31 ......

Jan. 1, 1955.....

Jan. 2-5 ........

Jan. 6-10 .......

Jan. 11-20 ......

Jan. 21-25 ......

Jan. 26-27 ......

Jan. 28-30 ......

Jan. 31 .........

Feb. 1-8, 10.....

Feb. 9 ..........

Feb. 11-13......

Feb. 14-16......

Feb. 17.........

a Includes 0 . 27 ec 

d Includes 0.20 ec 

f Includes 0.10 eq 

g Includes 0.23 ec 

h Includes 0.17 ec 

i Includes 0.70 eq 

j Includes 0.30 eq 

k Includes 0.53 ec

28 

28 

45 

28 

27 

60 

45 

34 

50

26 

107 

107 

237 

200 

73 

93 

30

1,270 

286 

456 

413 

147 

uivalent pei 

uivalent pei 

livalent per 

uivalent pei 

uivalent pei 

ilivalent per 

iivalent per 

uivalent pei

10

8.0

8.88

9.98

10.68

10.73

10.73

10.58

9.18

5.59

3.59

4.59

5.79

8.38

8.78

6.49

6.29

6.69

8.58

8.58

9.93

8.18

10.53

11.88

5.52

5.42

4.92

6.01

4.83

5.82

4.42

3.21

1.81

2.21

3.41

2.82

3.22

4.31

3.31

4.11

4.42

3.82

4.01

4.58

5.17

6.96

73.49

74.36

80.45

91.75

89.58

80.88

77.84

46.96

22.09

28.35

38.70

50.88

53.05

43.48

39.40

43.48

75.23

80.88

115.23

103.93

147.85

201.33

--

--

.24

--

--

__

.31

__

3.70

3.47

3.54

3.77

3.49

4.21

3.16

f 3.56

2.75

a3.21

g4.59

h4.92

4.20

4.69

d4.88

a4.67

14.21

3.64

j 3.36

3.39

3.72

k4.11

5.18

5.39

5.48

5.70

5.58

5.56

5.06

3.85

1.60

2.44

3.46

4.50

4.39

4.04

3.91

4.41

6.58

6.72

9.10

8.33

10.01

10.85

76.15

82.35

86.87

94.20

94.20

87.43

83.20

47.85

22.56

28.20

38.07

53.59

55.00

45.13

39.48

45.13

74.74

80.38

113.66

101.25

145.81

198 . 55

--

.01

--

--

_.

--

--

--_

per million of carbonate (CO,). 

per million of carbonate (CO*). 

per million of carbonate (CO,), 

per million of carbonate (CO»). 

per million of carbonate (CO,). 

per million of carbonate (CO,). 

per million of carbonate (CO,). 

per million of carbonate (CO,).

_-

--

.03

.05

..

__

.00

--

-.

--

--

.34

--

--

--

.00

--

--
ARKANSAS RIVER BASIN Continued 

CIMARRON RIVER AT PERKINS, OKLA. Continued

Chemical analyses, water year October 1954 to September 1955--C

bate 

of 

collection

Feb. 18-20, 1955 

Feb. 21 .........

Feb. 22-28......

Mar. 1-2 .......

Mar. 3, 10 ......

Mar. 4-9........

Mar. 11, 14-16.. 

Mar. 12-13......

Mar. 17-19. .....

Mar. 20.........

Mar. 21-22......

Mar. 23-27......

Mar. 28-29......

Mar. 30-31......

Apr. 1-8........

Apr. 9-10.......

Apr. 11-18......

Apr . 19 .........

Apr . 20-22 ......

Apr. 23-30......

May 1-8.........

May 10..........

May 11, 13......

May 12, 14-17 . . . 

Mav 18-19.......

Runoff 

(acrefeet)

300 

17 

514 

123 

111 

311 

145 

77 

89

73 

234 

387 

111 

87 

319 

79 

319 

101 

2,900 

2,080

357 

3,590 

16,480 

37, 350 

24, 240 

13.510

Silica 

(SiOJ 

ppm

--

Equivalents per million

Calcium 

(Ca)

14.17 

12.03 

9.93 

11.48 

10.13 

9.13 

11.48 

13.47 

11.13

8.18 

7.83 

7.09 

8.93 

9.93 

8.93 

6.59 

8.18 

13.77 

12.72 

8.33

9.93 

15.42 

1.95 

2.79 

2.69 

5.39

Magnesium 

(Mg)

8.43 

8.57 

6.79 

8.38 

6.99 

6.41 

7.00 

8.33 

6.59

5.98 

5.71 

4.69 

5.43 

6.41 

7.31 

4.11 

7.08 

8.23 

8.88 

6.19

7.95 

10.98 

.65 

1.11 

.71 

1.81

Sodium 

(Na)

330.04 

273.51 

183.50 

223.51 

175.67 

145.67 

191.76 

239.16 

162.63

123.06 

117.84 

86.53 

109.58 

127.41 

116.54 

80.45 

101.75 

219.16 

235.68 

145.24

162.19 

219.59 

4.09 

25.31 

13.00 

42.18

Potassium 

(K)

--

Bicarbonate 

(HCO,)

4.00 

k4.02 

3.54 

3.20 

3.43 

3.64 

3.79 

3.97 

3.92

h3.06 

3.38 

3.74 

b4.74 

4.29 

3.79 

3.87 

3.49 

3.34 

k4.74 

4.10

3.49 

b3.64 

2.52 

2.43 

2.05 

2.36

Sulfate 

(SOJ

13.12 

11.62 

9.87 

11.87 

10.83 

9.37 

11.53 

13.37 

9.78

7.62 

7.39 

6.37 

8.06 

9.41 

9.06 

6.79 

8.74 

17.48 

13.57 

8.97

10.87 

15.30 

.40 

2.48 

2.12 

4.81

Chloride 

(Cl)

324.34 

276.11 

179.65 

221.40 

174.01 

143.27 

190.37 

236.06 

162.73

125.22 

120.71 

88.56 

109.71 

129.17 

120.71 

81.79 

104.07 

215.19 

242.83 

145.81

165.27 

229.01 

3.67 

25.38 

11.85 

41.74

Fluoride 

(F)

--

Nitrate 

(NO,)

0.08 

.06 

.08

Boro

(B) 

ppm

--

b Includes 0.13 equivalent per million of carbonate (COj).

h Includes 0.17 equivalent per million of carbonate (CO»).

k Includes 0.53 equivalent per million of carbonate (CO»).
May 20, 1955.... 

May 21-22,27, 31 

May 23-26.......

May 28-30. ......

July 1-9.........

June 11-17. ......

July 1-3, 10-..-.. 

July 4-9.........

July 11, 20......

July 12-13.......

July 14..........

July 15-19, 21-31 

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

Aug. 11-13......

Aug. 14, 17......

Aug. 15-16......

Aug. 18-20......

Aug. 21-30......

Auer. 31 .........

47,800 

222,800 

109,900

68,150

28,900

3,430

14,160

2,020

7,430

152,100

115,800

15,710

6,150

9 441"!

19,320

3,130

2,080

883

12,130 

3,480

1,310

1,360

1,540

1,370

2,770

224

19

1.25

4.39

5.39

3.54

6.79

6.79

5.39

8.78

9.58

3.44

3.74

4.39

5.99

6.99

6.79

6.19

9.08

8.98

10.38

10.63

11.33

10.08

8.98

11.73

11.53

8.38

.59

1.81

2.41

1.66

3.61

4.01

3.01

4.42

5.02

1.46

.96

2.21

3.21

3.41

3.41

2.61

3.92

5.22

5.52

6.89

6.77

5.52

4.22

5.99

6.39

5.62

2.83

25.61

58.70

13.57

44.79

25.92

21.70

37.05

64.36

9.87

12.91

20.31

28.79

31.66

40.40

23.74

33.05

46.96

63.92

100.01

102.19

73.92

45.22

108 . 27

101.75

72.62

_.

--

--

--

__

--

__

--

--

--

.20

--

--

__

__

1.52

2.06

3.05

2.06

3.28

3.02

2.95

3.21

3.67

2.39

2.06

2.49

2.95

3.21

3.24

2.29

3.38

2.56

3.67

3.20

b3.16

3.18

b2.69

2.74

3.33

C2.95

.48

3.98

4.35

3.87

5.37

6.87

4.37

7.37

7.20

2.35

2.39

3.64

4.73

5.60

5.10

5.02

7.58

7.99

7.64

8.60

9.06

9.62

8.85

10.26

9.18

7.18

2.82

25.38

59.23

12.69

45.13

25.38

21.86

39.48

66.28

9.73

12.97

19.74

29.61

33.84

42.30

25.38

35.25

50.20

69.10

106.61

106.61

74.74

45.13

112.25

106.61

73.33

__

_

--

--

.01

- --

_

--

.05

.06

.04

--

.09

_

.11

.08

.10

.07

--

--

--

--

--

__

--

.2

b Includes 0.13 equivalent per million of carbonate (CO(). 

c Includes 0.07 equivalent per million of carbonate (CO().
ARKANSAS RIVER BASIN Continued

CIMARRON RIVER AT PERKINS, OKLA. Continued 

Chemical analyses, water year October 1954 to September 1955 

Date 

of 

collection

Sept. 1-4, 1955... 

Sept. 5-8 ........

Sept. 9 ..........

Sept. 10 .........

Sept. 11-12,14-17 

Sept. 13, 18......

Sept. 19-20......

Sept. 21-22......

Sept. 23-24......

Sept. 25-27 ......

Sept. 28 .........

Sept. 29-30 ......

Total or weighted 

average .......

Runoff 

(acrefeet)

738 

1,050 

587 

432 

2,090 

1,110

329 

450 

619 

811 

1,140 

4,590

976,700

Silica 

(SiOa) 

ppm

--

Equivalents per million

Calcium 

(Ca)

8.38 

11.93 

11.98 

7.39 

6.39 

7.58

7.19 

7.58 

9.98 

4.69 

6.99 

4.69

4.49

Magnesium 

(Mg)

5.42 

7.19 

4.02 

3.01 

2.21 

3.22

3.61 

5.42 

6.18 

2.91 

4.61 

2.51

1.97

Sodium 

(Na)

77.84 

104.80 

63.05 

46.96 

29.05 

42.70

54.35 

72.62 

86.97 

33.83 

60.01 

20.92

28.00

Potassium 

(K)

-

Bicarbonate 

(HCO,)

2.26 

3.62 

2.52 

2.49 

2.79 

2.88

1.90 

1.38 

3.54 

3.02 

2.56 

2.29

2.41

Sulfate 

(S0<)

7.31 

9.74 

11.85 

7.77 

4.91 

6.68

6.22 

7.64 

8.93 

3.14 

5.81 

4.79

3.64

Chloride 

(Cl)

81.79 

109.43 

63.46 

45.13 

29.61 

45.13

57.82 

74.74 

89.97 

33.84 

62.05 

21.15

28.20

Fluoride 

(F)

-

Nitrate 

(NOJ

0.06

Boro

(B) 

ppm

-
ARKANSAS RIVER BASIN Continued

ARKANSAS RIVER AT VAN BUREN, ARK.

LOCATION. At gaging station at bridge on U. S. Highways 64 and 71 at Van Buren, Crawford 

8.6 miles downstream from Poteau River, and at mile 353.4.

DRAINAGE AREA. 150,483 square miles (revised) of which 22,241 square miles is probably no

RECORDS AVAILABLE. Chemical analyses: October 1945 to September 1955.

Water temperatures: October 1945 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 4,460 micromhos Feb. 15; minimum 

Percent sodium: Maximum, 78 June 30; minimum, 48 Mar. 20. 

EXTREMES, 1945-55. Specific conductance: Maximum daily, 8,980 micromhos Apr. 1, 1954; mi

Percent sodium: Maximum, 80 Oct. 21-24, 1946; minimum, 32 July 18-27, 1951.

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of sp

district office at Fayetteville, Ark. Records of discharge for water year October 1954 

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-2, 1954.... 

Oct. 3-4.........

Oct. 5-10........

Oct. 11-12.......

Oct. 13..........

Oct. 14-16.......

Oct. 17 ..........

Oct. 18-22.......

Oct. 23..........

Oct. 24..........

Oct. 25-26.......

Oct. 27..........

Oct. 28..........

Oct. 29 ..........

Oct. 30..........

Oct. 31, Nov. 1-4

Runoff 

(acrefeet)

2,634 

2,245 

6,307 

2,535 

2,420

13,580 

15,150 

35,150 

8,529 

7,200

12,480 

4,284 

4,423 

8,707 

21,220 

57, 320

Silica 

(Si02) 

ppm

8.3 

8.8 

10 

10

8.8 

7.6

8.6 

5.9

Equivalents per million

Calcium 

(Ca)

3.39 

3.54 

4.29 

4.04 

3.24

3.89 

3.0*9 

2.30 

3.64 

2.79

2.15 

2.70 

3.54 

5.59 

3.09 

2.20

Magnesium 

(Mg)

1.32 

1.81 

1.73 

1.81 

1.40

2.06 

1.15 

.82 

1.64 

.90

.90 

1.07 

1.48 

2.63 

1.07 

.72

Sodium 

(Na)

7.91 

10.52 

12.61 

11.74 

9.13

12.70 

7.70 

4.39 

11.83 

6.57

4.70 

6.48 

10.70 

22.57 

6.74 

3.70

Potassium 

(K)

0.14 

.17 

.20 

.18

.18 

.11

.11 

.12

Bicarbonate 

(HCOJ

2.84 

2.93 

3.08 

2.98 

2.44

2.59 

2.15 

1.61 

1.59 

1.77

1.56 

1.84 

1.97 

2.02 

2.06 

1.52

Sulfate 

(SOJ

0.75 

.81 

.98 

.92 

.81

1.04 

.79 

.71 

.92 

1.31

.94 

1.21 

1.62 

1.69 

1.17 

.79

Chloride 

(Cl)

9.31 

12.13 

14.67 

13.88 

10.72

15.17 

9.08 

5.22 

14.67 

7.19

5.16 

7.33 

11.99 

26.65 

7.61 

4.23

Fluoride 

(F)

0.03 

.03 

.03 

.03

.03 

.03

.03 

.03

Nitrate 

(NO,)

0.02 

.03 

.03 

.04 

.03

.04 

.05 

.04 

.04 

.06

.05 

.03 

.05 

.04 

.02 

.03

Boro

(B) 

ppm

0.0

.0

.0

.0

.0

.0

.1

.0

.0

.1

.0

.1
ARKANSAS RIVER BASIN Continued

ARKANSAS RIVER AT VAN BUREN, ARK. Continu

Chemical analyses, water year October 1954 to September 1955 

Date 

of 

collection

Nov. 5-6, 1954... 

Nov. 7-8.........

Nov. 9-10. .......

Nov. 11-20.......

Nov. 21-30.......

Dec. 1-2.........

Dec. 3...........

Dec. 4-6... ......

Dec. 7-10........

Dec. 11-13.......

Dec. 14-15.......

Dac. 16-17.......

Dec. 18..........

Dec. 19-20.......

Dec. 21-23.......

Dec. 24-25.......

Dec. 26-27.......

Dec. 28..........

Dec. 29-30.......

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

Jan. 1-2, 1955....

Jan. 5 ...........

Jan. 6-7 .........

Jan. 8-9.........

Jan. 10..........

Runoff 

(acrefeet)

10,310 

10,160 

9,164 

44,130 

42,940

7,418 

4,165 

12,220 

11,780 

12,100

8,886 

10,950 

6,129 

11,560 

12,380

8,588 

9,223 

24,990 

93,220 

39,670

66, 640 

48,200 

18,270 

27,810 

26,140 

17,320

Silica 

(Si02) 

ppm

4.0 

4.3 

6.5 

3.6 

4.8

4.8

3.2 

2.4 

3.1

3.8 

3.2

3.1 

2.3

2.4 

2.4

3.3

2.4 

2.9

1.8 

4.7 

1.0

Equivalents per million

Calcium 

(Ca)

2.74 

2.99 

 3.49 

3.24 

3.24

3.44 

3.94 

3.44 

3.39 

3.59

2.30 

2.00 

2.44 

3.09 

3.34

3.89 

4.09 

1.80 

1.35 

1.60

1.05 

1.65 

2.84 

5.49 

5.09 

4.44

Magnesium 

(Mg)

0.99 

1.07 

1.32 

1.15 

1.1-5

1.07 

1.40 

1.07 

1.15 

1.15

.82 

.90 

.90 

1.07 

1.23

1.40 

1.89 

.63 

.58 

.65

.47 

.61 

1.07 

2.30 

1.89 

1.97

Sodium 

(Na)

5.70 

6.35 

8.91 

6.35 

5.87

5.39 

7.74 

5.74 

5.39 

6.44

4.00 

3.39 

4.39 

6.74 

7.74

9.18 

11.31 

3.26 

2.52 

3.26

2.00 

4.70 

9.39 

19.00 

16.96 

14.09

Potassium 

(K)

0.13 

.13 

.16 

.14 

.14

.13

.14 

.13 

.14

.10 

.10

.13 

.13

.20 

.21

.09

.07 

.09

.19 

.26 

.28

Bicarbonate

(Hccg

1.72 

1.97 

1.97 

2.18 

2.28

2.46 

2.43 

a2.38 

2.54 

2.41

1.80 

1.48 

1.61 

1.84 

1.88

2.13 

2.23 

1.06 

.95 

.90

.75 

.67 

.79 

1.31 

1.59 

1.79

Sulfate 

(SO.J

1.00 

1.02 

1.14 

1.19 

1.29

1.21 

1.35 

1.25 

1.17 

1.27

.85 

.94 

.83 

1.04 

1.02

1.10 

1.27 

.54 

.46 

.54

.42 

.46 

.52 

.94 

1.08 

1.12

Chloride 

(Cl)

6.77 

7.61 

10.58 

7.61 

6.91

6.49 

9.31 

6.91 

6.12 

7.56

4.48 

3.84 

5.42 

8.32 

9.45

11.14 

13.82 

4.09 

2.99 

4.15

2.31 

5.98 

11.79 

24.82 

21.29 

17.49

Fluoride 

(F)

0.03 

.03 

.03 

.03 

.03

.03

.03 

.01 

.03

.03 

.03

.03 

.03

.03 

.03

.03

.03 

.02

.02 

.02 

.02

Nitrate

(Ncg

0.06 

.03 

.02 

.03 

.01

.00 

.02 

.01 

.03 

.02

.01 

.01 

.03 

.02 

.01

.01 

.03 

.05 

.01 

.05

.04 

.05 

.07 

.05 

.06 

.05

Bo

(B

pp

0

a Includes 0.07 equivalent per million of carbonate (COS ).
LOWER MISSISSIPPI RIVER BASIN 71

oo t oo o> t 

OOOOO 

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eg to i-c c- i-c in co oo c- co corcr-osco c- os o in oo TCCMOSCO. _ .. _ - - -> o r

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eg eg co co co

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co in t- i-c ^

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oo eg co oo eg 

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c- oo os c- in

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eg co co o TC

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O O i-c 1 O

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TC oo in co cco eg oo o <-< 

o o o os oo

cot- os^ os

TC CO TC 1 I-C

oo co eg i-c TC 

c- os ea co rCO t~ OS CO ^

co co co r- o 

eg in co o oo

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co co co IM eg

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eg eg in n<

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CO C , COCO

os oo os ^ eg 

co c- o TC os

C- CO CO O OS

in os o co r- i-c c- os m TC

o o o os TI< 

co TI< TI< co reg i-c eg co in

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eg os c- os eg 

co to c- co in

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eg eg o o i 

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CM co i-i eg co

co eg CM i-c

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O OS O O CO

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oo co co TC os

CO CO CO i-l 1

in r- os o IH

O 00 CO O CO

o os c- ^f in

CO i-l i-C i-C

eg i-c o co eg t- oo co t- oo

co os os ^ o 

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PL, PL, PL, PL, PL,
ARKANSAS RIVER BASIN Continued

ARKANSAS RIVER AT VAN BUREN, ARK. Contin

Chemical analyses, water year October 1954 to September 195

Date 

of 

collection

Feb. 21-25, 1955 

Feb. 26..........

Feb . 27 ..........

Feb. 28..........

Mar. 1. ..........

Mar. 2-3. ........

Mar. 4 ..........

Mar. 5-6 ........

Mar . 8. ..........

Mar. 9-10. .......

Mar. 11-15. ......

Mar. 16-17.... ...

Mar . 18. .........

Mar. 19. .........

Mar . 20. .........

Mar. 21. .........

Mar. 22. .........

Mar . 23. .........

Mar. 24. .........

Mar. 25. .........

Mar. 26-27. ......

Mar. 28-29. ......

Mar. 30-31. ......

Apr. 1-2.........

Apr. 3-7.........

Apr. 8-9.........

Apr. 10..........

Runoff 

(acrefeet)

270, 000 

36, 500 

26,780 

22,810

22,210 

50, 580 

22,210 

34,710 

16,010

16,010 

38, 020 

67,950 

29,060 

29, 550

41,450 

51,170 

106,700 

141,600 

144,000

115,200 

82,910 

114,200 

81,120 

74, 580

77,950 

192,400 

69,020 

29.160

Silica 

(Si02) 

ppm

5.0

3.2 

2.0 

1.8 

4.0 

3.4

3.3 

5.5 

2.2 

5.0

4.6 

4.2 

4.0

4.2

Equivalents per million

Calcium 

(Ca)

1.20 

1.35 

1.55 

2.25

2.40 

2.15 

2.50 

2.40 

2.54

3.49 

2.30 

2.54 

2.20 

1.30

.65 

.50 

1.00 

.85 

1.50

2.30 

1.80 

1.40 

1.60 

1.20

1.00 

.90 

1.05 

1.10

Magnesium 

(Mg)

0.36 

.58 

.68 

.82

.90 

.99 

1.07 

.90 

.99

1.48 

.70 

1.07 

.80 

.48

.43 

.29 

.48 

.24 

.54

.90 

.58 

.49 

.53 

.56

.43 

.35 

.39 

.51

Sodium 

(Na)

2.44 

3.17 

3.52 

5.22

6.44 

5.44 

6.91 

5.61 

7.04

10.83 

6.35 

7.74 

6.00 

3.17

1.65 

.74 

2.00 

1.17 

3.35

5.91 

3.48 

2.70 

3.09 

2.35

1.83 

1.39 

1.91 

2.48

Potassium 

(K)

0.07

.12 

.11 

.13 

.14 

.13

.18 

.13 

.12 

.13

.07 

.08 

.07

.07

Bicarbonate 

(HC03)

0.79 

.61 

.80 

1.02

1.08 

1.03 

1.03 

1.21 

1.18

1.16 

.98 

1.13 

1.13

.74

.46 

.39 

.69 

.62 

.80

1.05 

1.10 

.84 

.92 

.79

.69 

.59 

.69 

.69

Sulfate 

(S0«)

0.52 

.40 

.60 

.62

.79 

.79 

.75 

.83 

.81

.92 

.65 

.94 

.87 

.60

.40 

.38 

.40 

.29 

.38

.54 

.52 

.50 

.56 

.50

.50 

.40 

.50 

.52

Chloride 

(Cl)

2.76 

4.00 

4.23 

6.43

7.76 

6.77 

8.88 

6.83 

8.46

13.54 

8.04 

9.19 

7.11 

3.55

1.86 

.73 

2.31 

1.30 

4.29

7.39 

4.23 

3.22 

3.84 

2.76

2.03 

1.66 

2.23 

2.82

Fluoride 

(F)

0.02

.00 

.00 

.00 

.01 

.01

.01 

.01 

.01 

.01

.01 

.01 

.01

.01

Nitrate 

(NO,)

0.08 

.05 

.03 

.03

.06 

.08 

.05 

.07 

.04

.05 

.06 

.05 

.04 

.05

.04 

.05 

.06 

.04 

.05

.06 

.06 

.03 

.04 

.03

.04 

.04 

.02 

.02

B

p
Apr. 11, 1955 .... 

Apr. 12-15.......

Apr. 16..........

Apr. 17-18.......

Apr. 19..........

Apr . 20 ..........

Apr. 21..........

Apr. 22-23.......

Apr. 24-26.......

Apr . 27 ..........

May 1. ...........

May 2. ...........

May 3. ...........

May 4-5. .........

May 6. ...........

May 7. ...........

May 8. ...........

May 9-10. ........

May 11. ..........

May 12. ..........

May 13. ..........

May 14. ..........

May 15. ..........

May 16. ..........

May 17-20. .......

May 21 ..........

20,230 

78, 700

27,370

45,220

16,440

19,220

23,400

60, 890

85,490

16,880

46, 350

12,650

10,650

9,084

21,740

13,070

12,650

12,240

18,390

10,450

15,150

16,880

41,260

81,120

72,600

150, 500

63. 470

3.3

3.4

3.8

2.4

4.4

4.0

4.2

2.4

4.6

3.8

4.6

3.8

4.6

5.1 3 1

9 Q

3.0 9 Q

4.6

7.8

3.4

5.0

3.0

5.9

2.15 

2.70

2.99

3.79

4.44

3.44

2.50

2.00

1.20

1.55

2.20 2 74

2.79 3 1Q

4.14

3.54 3 9Q

3.04 3 40 4 94

4.44

3.84

3.89

5.54

3.74

2.79

3.59

.78 

.90

1.15

1.64

1.64

1.48

.81

79

.54

.68

.81

1.07

1.15

1.15

1.48

1.48

1.15

1.23

1.48

1.64

1 89

1.48

1 R4

1.48

1.07

.99

1.23

4.65 

6.35

8.96

11.74

14.35

11.35

6.74

4.70

2.17

2.91

4.70 7 1 ^

9.48

i o 70

18.83

14.26

11.00

8.26

10.87

14.13

12 39

11.26

10.35

16.70

11.44

7.44

9.31

.09

.19

.24

.24

.21

.13

.08

.13

.18

.18

.26

.31

.26

<>O

.11

.26^

no

.28

.26

.36

.26

.20

.24

1.21 

1.15

1.21

1.25

1.21

1.13

1.10

1.06

.80

.98

1.36

1.34

1.25

1.41

1.87

1.97

1.87

1.79

1.56

1.49

b2.34 2 ni

-2.23

1 Q1

1.95

1.95

2.15

.79 

.94

1.00

.85

.87

.83

.77

.64

.48

.62

.87

1.06

1.02

1 ^

1.62

1.50

1 ^1

1.12

1 19

1.10 2 77

2 14

1.90

1 95

1.06

1 91

1.37

5.39 

7.92

10.66

15.09

18.05

13.82

8.12

5.7*8

2.57

3.44

5.36

8.60

10.94

15.09

20.59

15.23

11.85

9.45

1 9 Q7

17.20

13.40

19 1 ^

11.28

9n f»9

12.97

8.04

10.44

.01

.01

.01

.01

.00

.02

.02

.00

.02

.02

.02

.02

.02

(19

.02

.01

.02

fW

(w

.02

.02

.02

.02

.02

.02 

.05

.05

.05

.13

.07

.04

.03

.05

.01

.06

.06

.09

.06

.07

.09

.07

.07

.08

.05

1 9

.08

.10

.13

.10

.09

.10

b Includes 0.03 equivalent per million of carbonate (CO»).
ARKANSAS RIVER BASIN Continued

ARKANSAS RIVER AT VAN BUREN, ARK.--Continu

Chemical analyses, water year October 1954 to September 1955

Date 

of 

collection

May 22-23, 1955.. 

May 24. ..........

May 25-28. .......

May 29-30. .......

May 31. ..........

June 1-6 .........

June 11-12.......

June 13-14 .......

June 20-21 .......

June 27 ..........

July 1. ...........

July 2. ...........

July 3-6 .........

July 7-9 .........

July 10 ..........

Runoff 

(acrefeet)

334, 200 

192, 000 

583, 100 

286, 600 

197, 200

585, 300 

76, 760 

68, 230 

60, 500 

60, 300

36,690 

96,990 

40, 260 

71,800 

68, 230

97,980 

237, 200 

57, 120 

91, 240 

53, 550

60, 690 

77, 360 

212,800 

87, 070 

33.320

Silica 

(Si02) 

ppm

7.4 

9.0 

6.8 

5.6

6.2 

7.6 

5.6 

8.1 

5.8

12 

5.8 

6.9 

5.6 

10

9.9 

9.8 

10 

9.8 

9.4

7.0 

7.3 

7.0 

5.7 

8.8

Equivalents per million

Calcium 

(Ca)

3.09 

2.94 

3.19 

3.49 

2.60

2.44 

3.04 

3.54 

3.74 

4.94

4.19 

3.59 

3.94 

4.34 

5.54

3.69 

3.24 

3.59 

3.84 

4.19

3.44 

3.39 

3.24 

3.54 

3.84

Magnesium 

(Mg)

0.90 

.90 

1.32 

1.32 

.67

.71 

.99 

1.15 

1.32 

1.89

1.56 

1.23 

1.32 

1.32 

1.97

1.23 

.99 

1.07 

1.15 

1.56

.99 

.99 

.99 

1.07 

1.01

Sodium 

(Na)

6.96 

7.39 

12.52 

15.48 

8.22

4.00 

6.35 

10.70 

11.91 

16.92

13.18 

10.26 

12.78 

8.96 

20.26

11.39 

9.61 

10.44 

15.13 

21.05

12.26 

9.78 

7.96 

9.39 

10.04

Potassium 

(K)

0.18 

.18 

.25 

.26 

.20

.14 

.19 

.28 

.26 

.33

.31 

.17 

.26 

.15 

.36

.28 

.17 

.19 

.23 

.25

.28 

.24 

.20 

.28 

.25

Bicarbonate 

(HCO,)

2.11 

2.08 

2.10 

2.36 

2.10

1.87 

2.00 

2.13 

2.20 

2.69

2.67 

2.21 

2.26 

3.34 

2.44

2.24 

2.00 

2.00 

1.70 

2.05

1.87 

1.95 

2.05 

2.03 

2.13

Sulfate

(scg

0.71 

1.06 

1.79 

1.67 

1.21

.85 

1.37 

1.60 

1.79 

2.79

2.33 

1.94 

2.23 

1.81 

2.56

2.27 

1.77 

1.83 

2.16 

2.83

2.29 

2.35 

2.54 

2.71 

2.60

Chloride 

(Cl)

8.04 

8.04 

12.97 

16.08 

8.18

4.37 

6.91 

11.28 

12.83 

17.91

13.68 

10.77 

13.26 

9.17 

23.13

11.56 

10.01 

11.00 

15.79 

21.15

12.41 

9.73 

7.95 

9.25 

10.29

Fluoride 

(F)

0.02 

.03 

.03 

.03

.01 

.02 

.02 

.01 

.02

.02 

.02 

.01 

.03 

.01

.02 

.02 

.03 

.02 

.02

.02 

.02 

.02 

.02 

.02

Nitrate 

(NO,)

0.07 

.07 

.07 

.09 

.09

.06 

.07 

.08 

.09 

.13

.10 

.10 

.07 

.02 

.09

.10 

.03 

.04 

.02 

.05

.06 

.09 

.05 

.09 

.07

Bo

(

p
July 11-12, 1955.. 

July 13-14. .......

July 15. ..........

July 16-19. .......

July 20. ..........

July 21. ..........

July 22. ..........

July 23. ..........

July 24. ..........

July 25-26. .......

July 27-29. .......

July 30-31. .......

Aug. 1-7. ........

Aug. 8-9. ........

Aug. 10..........

Aug. 11-12.......

Aug. 13-14.......

Aug. 15-16.......

Aug. 17-18.......

Aug. 19..........

Aug. 20-21.......

Aug. 22. .........

Aug. 23-24 

Aug. 25-27 

Aug. 28-29 

Aug. 30-31

65,060 

60, 300

27,170

84,260

15,830

18,410

18,960

16, 300

14,880

29,320

44, 190

27,930

81,960

20,470

10, 590

27,490

23, 600

20, 330

20,110

10,990

21,580

10,200

16,460 

29,910 

20,790 

19,620

4.6

7.7

3.4

7.9

6.2

5.6

4.2

4.2

6.3

3.5

2.8

2.1

2.9

2.8

2.1 5 Q . 9 3

O 

. It

4.5

6.4

4.3

5.6

2.8

2.9 

4.3 

2,8 

2.5

3.59 

3.94

3.59

2.99

3.69

4.14

3.79

3.69

3.29

3.74

4.14

3,19

2.89 3 1A . tt

3.54 3 7.1 . 1 1

3 44

4.89

5.84

4.24

3.29

2.99 

3.24 

2.94 

3.14

1.15 

1.15

.99

1.15

1.15

1.32

1.15

1.15

1.07

1.15

1.48

1.23

1.40

1.32

1.40

1 91 X . AO

2.22

2.38

1.81

1.56

1.48

1.23 

1.56 

1.48 

1.23

8.00 

11.04

8.91

6.44

8.87

11.13

8.57

8.74

7.83 9 Q1 . 9X

14.22

11.13 9 Q1 . 9X

12.78

9.83 U Q1 . 3 A

10.26

16 39

9O 7Q CAJ .19

17.00

1 1 4fi XO . TZO

10.83

9.13 

12.96 

10.35 

8.96

.21 

.24

.20

.16

.20

.25

.20

.20

.18

.24

.19

9n . £U

.26

23

1Q . X9

11 * OX

.38

11 . ox

.22

.20 

.24 

.24 

.22

2.10 

2.16

2.13

2.02

2.29

2.33

2.16

2.03

1.87

1.77

1.54

1.34

1.36

1.41

1.70

1 04 x . oft

1.84

1.75

1 7Q X . I 9

1.41

1 .48

1.70

1.61 

1.38 

1.43 

1.66

2.62

2.77

2.42

1.50

2.37

3.02

2.21

2.23

2.08

2 14

1.85

2.04

1.71

1 7Q X . I 9

1.81 2 19 

. J.A

1.87

2.02

1.62

2.16

1.58

1.92

1.50 

1.67 

1.77 

1.96

8.32 

11.14

8.74

6.77

8.88

11.28

8.97

9.08

8.32

10.72

16.08

12.13

10.86

14.38

11.28

19 Q7 XA .91

11.28

20.31

25.38

20.02

1 R R1 X J. JX

12.47

10.01 

14.67 

11.56 

10.15

.02 

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

'02

02

.02

.02

.02

.02

.02

.02 

.02 

.02 

.02

.08 

.06

.05

.06

.04

.04

.04

.04

.05

.04

.03

.06

.04

ni . uo

.04

.04

.03

ni . uo

.03

ni . uo

.00

.06 

.02 

.03 

.03
ARKANSAS RIVER BASIN--Continued

ARKANSAS RIVER AT VAN BUREN, ARK.~Continu

Chemical analyses, water year October 1954 to September 195

Date 

of 

collection

Sept. 1, 1955.....

Sept. 2 ..........

Sept. 3-4 ........

Sept. 5 ..........

Sept. 6 ..........

Sept. 7 ..........

Sept. 8-10 .......

Sept. 11 .........

Sept. 12-14 ......

Sept. 15 .........

Sept. 16 .........

Sept. 17 .........

Sept. 18 .........

Sept. 19-20 ......

Sept. 21 .........

Sept. 22 .........

Sept. 23 .........

Sept. 24-26 ......

Sept. 27 .........

Sept. 28 .........

Sept. 29 .........

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

Total or weighted 

average .......

Runoff 

(acrefeet)

17,340 

20,030 

32,810 

12,220 

9,124

5,732 

25,290 

10,200 

23,030 

10, 590

11,390 

10, 200 

9,481 

15,270 

5,891

9,481 

10,590 

30,980 

13,960 

14,880 

25,790 

25,790

9,298,580

Silica 

(Si02) 

ppm

4.8 

7.8 

7.8 

3.5 

7.8

6.3 

3.5 

3.5 

4.2 

2.8

3.1 

3.5 

2.8 

3.6 

3.9

3.1 

3.4 

3.6 

2.9 

4.2 

4.8 

3 9

__

Equivalents per million

Calcium 

(Ca)

3.49 

3.84 

2.94 

4.39 

6.84

4.89 

4.34 

2.89 

3.19 

3.29

3.39 

2.74 

3.19 

3.64 

4.54

5.34 

4.24 

3.64 

4.19 

2.74 

4.34 

3.44

2.84

Magnesium 

(Mg)

1.32 

1.32 

.99 

1.56 

2.30

1.97 

1.64 

1.07 

1.07 

1.23

1.15 

.90 

1.07 

1.48 

1.73

2.14 

1.64 

1.15 

1.32 

.82 

1.40 

1.07

0.99

Sodium 

(Na)

10.39 

12.44 

7.57 

13.70 

23.61

14.91 

13.91 

9.65 

8.13 

8.52

9.57 

6.57 

8.83 

11.22 

14.70

20.09 

16.61 

11.48 

12.83 

6.61 

13.13 

7.35

8.00

Potassium 

(K)

0.24 

.28 

.23 

.28 

.33

.33 

.33 

.22 

.19 

.20

.24 

.18 

.22 

.25 

.28

.31 

.28 

.20 

.24 

.16 

.25 

.18

_

Bicarbonate 

(HCOj)

1.64 

1.67 

1.74 

1.74 

1.77

1.87 

1.74 

1.21 

1.64 

1.84

1.61 

1.44 

1.54 

1.44 

1.36

1.41 

1.38 

1.54 

1.79 

1.69 

1.74 

2.05

1.62

Sulfate

(scg

1.98 

1.62 

1.40 

1.60 

1.44

1.25 

1.48 

1.29 

1.62 

1.40

1.50 

1.29 

1.65 

1.60 

1.37

1.62 

1.96 

1.67 

1.48 

.94 

1.14 

1.06

1.25

Chloride 

(Cl)

11.70 

14.10 

8.60 

16.64 

29.33

18.90 

16.64 

11.00 

9.17 

9.59

10.94 

7.76 

9.87 

13.82 

18.33

24.82 

19.74 

12.97 

14.95 

7.47 

16.08 

9.08

8.88

Fluoride 

(F)

0.01 

.01 

.01 

.01 

.01.

.01 

.01 

..01 

.02 

.01

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.02 

.02 

.02

_

Nitrate

(Ncg

0.03 

.04 

.03 

.04 

.03

.04 

.02 

.03 

.03 

.04

.03 

.04 

.04 

.04 

.03

.03 

.04 

.04 

.05 

.05 

.07 

.09

0.06

Bo

(B

pp

0
ARKANSAS RIVER BASIN

CANADIAN RIVER NEAR WHITEFIELD, OKLA.

LOCATION.--At gaging station at bridge on State Highway 2, three-quarters of a mile north 

stream from Snake Creek. 

DRAINAGE AREA.--47,576 square miles.

2^TO52ScAVAILABLE '~~Chemical analyses: September 1944 to February 1945, September 1946 t

EXTREMES, 1954-55. Specific conductance: Maximum daily, 19,900 micromhos Feb. 10; minimu

Percent sodium: Maximum, 77 Jan. 8-9, Feb. 10-13; minimum, 58 July 4-59 

Sodium adsorption ratio: Maximum, 32 Feb. 10; minimum, 3, 2 Feb. 22. 

EXTREMES 1944-45, 1946-55.--Specific conductance: Maximum daily, 19,900 micromhos Feb. 

Percent sodium: Maximum, 80 Nov. 6-14, Dec. 21-23, 1947; minimum 37 Feb 3-5 1948

Sodium adsorption ratio, 1951-55: Maximum, 32 Feb. 10, 1955; minimum, 1.9 Mar! 17 1953

aif?^r»?rnki h°r dr^0lVn2i SOlinS are, re2"«es on evaporation. Records'of sp

office at Oklahoma City, Okla. Records of discharge for water year October 19

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954.. 

Oct. 11-15 ......

Oct. 16 .........

Oct. 17..........

Oct. 18 .........

Oct. 19-20 ......

Oct. 21, 23, 28-31 

Oct. 22, 26-27... 

Oct. 24-25 ......

Runoff 

(acrefeet)

397 

555 

349 

274 

770

1,380 

3,440 

2,100 

2,470

Silica 

(Si02) 

ppm

20

Equivalents per million

Calcium 

(Ca)

5.89 

5.99 

12.38 

17.76 

23.65

9.18 

6.99 

6.19 

9.78

Magnesium 

(Mg)

3.01 

2.81 

4.42 

4.24 

7.35

3.42 

2.81 

1.81 

2.22

Sodium 

(Na)

15.44 

14.26 

39.87 

62.62 

93.93

26.26 

22.74 

16.26 

31.61

Potassium 

(K)

0.16

Bicarbonate 

(HCOS)

2.93 

a2.62 

b2. 65 

1.38 

1.44

c3.74 

a3.02 

d2. 59 

e2.46

Sulfate 

(S0<)

0.29 

.35 

.67 

.62 

.87

6.75 

3.73 

3.04 

2.71

Chloride 

(Cl)

21.15 

19.74 

53.59 

83.20 

124.94

28.77 

26.79 

19.04 

39.48

Fluoride 

(F)

0.01

Nitrate 

(NOJ

0.03 

.02 

.01

.08 

.08 

.06 

.04

Bor

(B

ppm

0.1

a Includes 0.20 equivalent per million of carbonate (CO,),

b Includes 0.27 equivalent per million of carbonate (COj).

c Includes 0.40 equivalent per million of carbonate (CO,),

d Includes 0.13 equivalent per million of carbonate (COJ.

e Includes 0.07 equivalent per million of carbonate (CO,).
ARKANSAS RIVER BASIN Continued

CANADIAN RIVER NEAR WHITEFIELD, OKLA. Continu

Chemical analyses, water year October 1954 to September 1955--C

Date 

of 

collection

Nov. 1-3, 1954 . 

Nov. 4-10 ......

Nov. 11-14 .....

Nov. 15-20 .....

Nov. 21-30 .... 

Dec. 1-10 .....

Dec. 11, 15-17, 20 

Dec. 12-13, 18 . 

Dec. 14, 19 .... 

Dec. 21-27 .....

Dec. 28-29 .....

Dec. 30-31 .....

Jan. 1, 10, 1955 

Jan. 2-7. .......

Jan.. 11-12, 14.. 

Jan. 13, 15-16 .

Jan. 17-20 .....

Jan. 21-24......

Jan. 25-27 .....

Feb. 1-2 .......

Feb. 3-4 .......

Feb. 5 .........

Feb. 6 .........

Fel. 7-8 ......

Fe!,. 9 .........

Runoff 

(acrefeet)

516 

964 

428 

655 

770

653 

1,220 

684 

462 

1,570 

8,750 

13,390

4,690 

9,360 

1,140 

2,000 

3,490

10,660 

6,110 

2,520 

2,210

861 

968 

1,750 

4,520 

7,360 

2,780

Silica 

(Si02) 

ppm

14

Equivalents per million

Calcium 

(Ca)

9.28 

11.18 

12.57 

14.67 

17.07

17.17 

19.71 

15.17 

16.37 

20.71 

6.59 

4.39

13.17 

24.70 

17.76 

15.97 

14.37

7.58 

11.18 

16.77 

21.16

21.11 

18.31 

13.57 

9.18 

4.19 

16.77

Magnesium 

(Mg)

4.12 

5.82 

6.03 

7.13 

7.73

7.63 

5.49 

6.43 

6.43 

8.89 

2.61 

1.61

4.83 

11.30 

7.04 

6.03 

4.83

2.62 

3.62 

5.23 

9.24

8.89 

7.69 

5.63 

3.42 

1.51 

6.83

Sodium 

(Na)

32.57 

42.09 

47.40 

55.66 

62.18

66.10 

76.53 

60.01 

67.40 

83.05 

24.66 

14.18

55.66 

112.62 

82.18 

68.27 

56.96

31.26 

43.48 

69.57 

97.40

92.19 

77.84 

57.83 

36.92 

15.87 

72.62

Potassium 

(K)

0.33

Bicarbonate 

(HCOj)

2.95 

3.11 

e2.47 

2.77 

3.39

3.02 

2.74 

2.72 

2.62 

2.44 

1.56 

1.20

1.31 

1.08 

1.54 

1.77 

1.59

1.16 

1.47 

1.62 

1.90

1.74 

1.77 

1.38 

1.21 

.79 

1.43

Sulfate 

(SOJ

2.21 

1.75 

1.44 

1.12 

.96

.98 

1.33 

1.15 

1.21 

1.08 

.48 

.31

.71 

1.02 

1.02 

1.00 

.87

.83 

.69 

.87 

1.06

1.06 

.96 

.87 

.71 

.46 

1.00

Chloride 

(Cl)

40.89 

52.18 

61.48 

71.92 

81.23

86.02 

94.20 

74.75 

83.20 

111.12 

32.43 

19.04

69.94 

144.96 

101. 53 

84.61 

71.92

39.48 

56.41 

86.02 

119.86

119.58 

99.84 

73.33 

47.95 

21.15 

91.66

Fluoride 

(F)

0.01

Nitrate 

(NOJ

0.08

.00 

.06

Boro

(B) 

ppm

0.21

e Includes 0.07 equivalent per million of carbonate (COS).
Feb. 10, 1955 ... Foh 111?

Feb. 14-15 ......

Feb. 16-18 ......

Feb. 19 .........

Feb. 20 .........

Feb. 21 .........

Feb. 23 .........

Feb. 24-25 ......

Feb. 26-28 ......

Mar. 1..........

Mar. 2-3 ........

Mar. 5, 9-10 .... 

Mar. 6-8........

Mar. 11-15......

Mar. 16 .........

Mar. 17.........

Mar. 18-19 .....

Mar. 20.........

Mar. 21.........

Mar. 22.........

Mar. 24-25......

Mar. 26-31 ......

2,100 

3,370

1,320

1,490

4,400

18,410 H 49f>

11,400

8,830

6,900

4,890

3,110

7,800

3,010

3,560 

3,350

2,340

2,780

4,480

14,160

22,610

47,010

43,640

37,290

45,260

18.320

--

--_

33.68 

22.26

16.32

14.77

11.18

2.25

2.15

1.45

2.40

6.79

11.98

6.59

5.19

8.98

14.37 

17.51

11.38

6.99

2.20

2.79

1.45

2.10

5.39

3.39

1.90

4.59

14.72 

9.14

7.68

5.23

4.02

.55

.61

.43

.70

2.81

4 fi9

2.81

1.81

4.02

5.23 

7.69

5.52

2.71

.30

.65

.47

.40

1.91

1.01

.70

1.01

158.72 

104.80

71.31

62.18

44.35

5.44

4.96

3.13

8.09

30.13

53.05

28.83

20.39

39.48

62.62 

80.88

48.27

26.00

5.09

7.91

3.30

4.13

19.96

10.61

6.13

15.57

--

__

--

. __

1.11 

1.23

1.46

1.80

1.44

1.16

1.21

.92

.77

.72

.97

.80

1.03

.93

1.31 

1.11

1.77

1.49

.90

.85

.85

1.34

1.16

1.36

.82

1.16

1.17 

1.02

.98

.98

.98

.40

.31

.31

.27

.56

.69

.44

.48

.62

.77 

.77

.87

.79

.58

.46

.44

.33

.62

.46

.37

.79

197.42 

129. 17

92.79

78.97

55.00

6.83

5.98

3.89

9.87

38.07

69.10

36.66

25.38

49.36

78.97 

101.25

62.05

33.28

6.20

9.73

3.95

5.08

25.38

13.54

7.67

19.74

--

__

__

__

__

__

__

-

__

.05

.06

.06

.04

.07-

.04

.03

.04

.04

.07

.05

.03

.06

-

_

_

_

_

_

_

-

_

_

_

_

_
ARKANSAS RIVER BASIN Continued 

CANADIAN RIVER NEAR WHITEFIELD, OKLA. Contin

Chemical analyses, water year October 1954 to September l955--

Date 

of 

collection

Apr. 1, 5, 1955.. 

Apr. 2-3 ........

Apr. 6-7 ........

Apr. 8-10 .......

Apr. 11-13, 16-17 

Apr. 14 .........

Apr. 15, 18-20... 

Apr. 21. .........

Apr. 22 ........

Apr. 23 .........

Apr. 24-25 

Apr. 26-28 ......

Apr. 29-30 ......

May 5-6 ........

May 7 ...........

May 8 ...........

May 9-10........

May 11 ..........

May 12, 19 ......

May 13, 15 ......

May 14 ..........

May 16-17.......

May 18 .........

May 20-31......

Runoff 

(acrefeet)

5,990 

13,490 

3,130 

4,240 

4,230

16,150 

15,070 

15,660 

10,040 

14,900

9,520 

8,170 

4,120 

1,640

2,400 

1,130 

734 

4,170 

8,270 

2,580

8,510 

33,440 

18,960 

14,400 

3,610 

764,000

Silica 

(Si02) 

ppm

14

Equivalents per million

Calcium 

(Ca)

3.99 

2.00 

3.19 

7.98 

9.38

10.18 

3.99 

7. 9R 

1.85 

1.10

1.55 

2.94 

4.59 

6.39

8.58 

23.85 

14.17 

8.58 

8.08 

6.79

8.78 

5.19 

9.78 

4.59 

5.69 

3.09

Magnesium 

(Mg)

1.91 

.90 

1.01 

3.02 

4.02

4.02 

1.01 

2.82 

.95 

.42

.93 

1.56 

1.91 

2.81

4.22 

12.15 

7.83 

4.62 

5.12 

3.41

3.82 

2.41 

3.62 

1.81 

2.61 

.99

Sodium 

(Na)

15.09 

6.22 

11.44 

31.74 

38.31

42.35 

14.57 

31.83 

7.22 

2.96

5.39 

11.31 

16.52 

22.87

32.00 

99.58 

61.31 

34.79 

19.39 

22.87

30.66 

18.13 

37.57 

12.74 

16.96 

6.39

Potassium 

(K)

0.13

Bicarbonate 

(HCOS)

1.13 

.95 

.90 

1.05 

1.26

1.23 

1.07 

1.26 

.66 

.72

.85 

.92 

1.38 

1.66

1.90 

1.66 

1.57 

1.66 

4.03 

2.52

2.41 

1.95 

1.87 

2.23 

2.51 

2.02

Sulfate 

(SOJ

0.73 

.71 

.67 

.98 

1.00

.87 

.69 

.83 

.27 

.23

.33 

.75 

.50 

.67

.62 

1.12 

.83 

.69 

.69 

4.10

3.91 

2.08 

1.71 

3.12 

2.94 

.31

Chloride 

(Cl)

19.04 

7.47 

13.54 

40.05 

49.36

53.02 

17.63 

41.74 

9.03 

3.38

6-49 

13.82 

20.73 

30.18

42.30 

134.81 

81.79 

45.13 

27.36 

26.51

38.07 

22.56 

47.95 

13.54 

19.04 

7.84

Fluoride 

(F)

0.03

Nitrate 

(NOS)

0.08 

.07 

.09

.07

.07 

.02

.01 

.03 

.02

.15

.11

.10 

.10 

0.04

Boron 

(B) 

ppm

0.03
June 1-6, 1955.. 

June 7-8 .......

June 10 ........

June 11-14 .....

June 15-17 .....

June 18. ........

June 25-27, 29-30

July 1-3........

July 4-5, 9 .....

July 6-7 ........

July 11-17 .....

July 21 .........

July 22 .........

July 24-31 .....

Aug. 1-4 .......

Aug. 5-6 .......

Aug. 7-10 ......

Aug. 11 ........

Aug. 12 ........

69,360 

14,600

4,200

5,510

17,750

9,980

12,600

17,510

11,640

12,100

27,230 

5,970

15,990

14,380

4,920

8,810

17,110

8,040

2,780

1,590

1,370

6,020

1,950

2,780

6,520

1,290

2.830

--

--

_.

3.79 

3.79

5.39

8.98

7.09

8.38

5.79

9.58

6.79

10.78

6.79 

5.49

5.59

4.54

5.09

6.24

4.89

5.59

3.64

8.68

11.58

16.37

10.38

13.57

7.14

12.48

16.77

2.01 

2.31

2.61

4.62

4.11

4.72

4.21

3.72

4.21

5.62

4.41 

3 iil

3.01

2.86

3.01

3.56

2.31 3 41

1.96

3.32

6.12

8.83

5.02

8.43

3.86

7.12

9.23

10.61 

10.35

16.57

97 09

19.48

25.66

15.65

31.13

22.26

^7 W

21.48 

14.61

15.31

10.35

13.52

18.31

11.61 H ^O

10.39

27.66

45.22

68.70

42.09

56.53

23.09

51.75

73.05

--

__

._

1.92 

1.61

1.85

2.88

2.65

2.36

2.95

2.39

2.16

1 oo

2.39 

2.36

2.79

2.95

2.79

2.56

2.52

2.59

1.57

1.84

1.67

1.77

e2.13

e2. 10

2.43

2.29

2.00

.85 

.61

1.04

2.98

3.87

2.94

4.41

2.56

1.77

1.54

2.50 

4.35

2.81

3.19

2.83

2.83

2.54

2.17

1.02

1.08

1.33

2.04

1.39

2.96

3.29

2.56

1.64

13.82 

14.38

35.25

23.69

32.72

19.18

40.89

28.20

49.36

26.79 

16.92

17.77

11.42

16.36

22.84

13.54

18.05

12.97

36.66

57.82

87.99

55.00

73.33

28.20

64.87

93.07

--

--

__

.04 

.04

01

.10

.12

.12

.12 

21

.11

.11

.07

1 9

.07

.07

.05

__

e Includes 0. 07 equivalent per million of carbonate (COj).
ARKANSAS RIVER BASIN--Continued

CANADIAN RIVER NEAR WHITEFIELD, OKLA. Conti

Chemical analyses, water year October 1954 to September 1955

Date 

of 

collection

Aug. 13, 1955 ... 

Aug. 14-15 ......

Aug. 16-17. ......

Aug. 18-20 ......

Aug. 21-22, 24-26 

Aug. 23, 27-28, 30

Aug. 3L .........

Sept. 1-2........

Sept. 4-5 .......

Sept. 6-10. ......

Sept. 11, 13 .....

Sept. 12, 15 .....

Sept. 14.........

Sept. 16.........

Sept. 17-18......

Sept. 19-20 .....

Sept. 21-23......

Sept. 24.........

Sept. 25-26, 28 .. 

Sept. 27, 29-30 

Total or weighted 

average. ....

Runoff 

(acrefeet)

5,340 

6,150 

3,560 

3,730 

5,820

6,800 

1,890 

6,680 

11,920 

2,780 

2,720

2,560 

1,270 

1,460 

793 

793 

1,000

801 

1,010 

3,250 

41,200 

39,850

1,883,000

Silica 

(Si02) 

ppm

--

__

Equivalents per million

Calcium 

(Ca)

7.98 

12.18 

8.98 

6.39 

8.58

6.09 

3.04 

4.49 

3.34 

22.65 

12.97

1039 

8.78 

12.38 

5.59 

18.71 

30.14

13.97 

15.57 

10.38 

2.30 

3.59

4.79

Magnesium 

(Mg)

4.62 

6.62 

5.02 

3.81 

4.42

3.21 

1.46 

1.71 

1.46 

10.15 

6.23

4.02 

4.02 

5.42 

2.61 

8.89 

15.26

6.23 

8.43 

6.02 

1.30 

2.61

1.97

Sodium 

(Na)

29.74 

47.83 

34.05 

21.79 

30.48

20.44 

8.83 

13.31 

9.26 

94.36 

53.92

39.96 

32.48 

43.92 

20.05 

76.97 

136.97

58.27 

68.79 

45.22 

7.04 

16.26

15.18

Potassium 

(K)

--

_

Bicarbonate 

(HCO,)

2.26 

2.00 

2.10 

2.26 

2.29

2.06 

1.57 

1.80 

1.51 

1.11 

1.25

1.84 

1.74 

1.84 

1.25 

1.31 

1.11

1.38 

1.84 

1.74 

1.54 

1.41

1.79

Sulfate 

(SOJ

2.37 

1.94 

2.33 

3.10 

2.75

2.06 

1.35 

1.00 

.73 

.87 

.83

.75 

.87 

.83 

.48 

.85 

.96

.75 

1.29 

1.02 

.48 

.50

0.85

Chloride 

(Cl)

36.66 

62.05 

43.71 

26.79 

39.48

25.38 

10,72 

16.36 

12.13 

123. 53 

70.51

50.77 

42.30 

59.79 

26.79 

101.25 

176.55

77.56 

87.43 

56.97 

8.60 

20.31

19.12

Fluoride 

(F)

--

__

Nitrate 

(NO,)

0.07

.05 

.05

.06 

.05

.02 

.03

_

Bo

(B

pp
RED RIVER BASIN

RED RIVER AT DENISON DAM NEAR DENISON, TEX.

LOCATION. Immediately below dam on Red River, 1.7 miles upstream from Sand Creek, 4 miles 

upstream from gaging station near Colbert, Bryan County, Okla. 

DRAINAGE AREA. 39,719 square miles above dam, 39,777 square miles above gaging station, o

contributing. 

RECORDS AVAILABLE. Chemical analyses: May 1944 to September 1955.

Water temperatures: October 1945 to September 1955. 

EXTREMES 1954-55. Specific conductance: Maximum daily, 1,730 micromhos Aug. 18-19, Sept

Percent sodium: Maximum, 56 Oct. 1-31, Feb. 1-28, Mar. 1-31, Aug. 1-31, Sept. 1-30, min

EXTREMES, 1944-55. Specific conductance: Maximum daily, 3,520 micromhos Aug. 14, 1944; m

Percent sodium: Maximum, 59 July 3-10, 1944; minimum, 31 Nov. 1-10, 1945.

REMARKS Values reported for dissolved solids are residues on evaporation unless otherwis

daily samples available in district office at Austin, Tex. Records of discharge for ga

October 1954 to September 1955 given in WSP 1391. No appreciable inflow between dam an

local rains.

Chemical analyses, water year October 1954 to Septembe

Date 

of 

collection

Oct. 1-31, 1954... 

Nov. 1-30........

Dec. 1-31........

Jan. 1-31, 1955... 

Feb. 1-28........

Mar. 1-31 .......

Apr. 1-30 ........

May 1-31 .........

June 1-30... ......

July 1-31 .........

Aug. 1-31 ........

Sept. 1-30 ........

Total or weighted 

average .......

Runoff 

(acrefeet)

68, 210 

117,200 

127, 800 

20, 000 

56, 400 

50, 510

69, 880 

196, 900 

692, 400 

219,400 

221,300 

160, 000

2,000, 000

Silica 

(Si02) 

ppm

12 

14 

12 

11 

9.4 

8.4

6.2 

8.0 

8.4 

11 

12 

11

9.9

Equivalents per million

Calcium 

(Ca)

4.29 

4.44 

4.64 

4.69 

4.64 

4.64

4.69 

4.89 

4.69 

5.01 

5.14 

5.29

4.79

Magnesium 

(Mg)

1.81 

1.97 

1.97 

1.97 

1.64 

1.73

1.81 

1.81 

1.81 

1.73 

1.73 

1.73

1.81

Sodium 

(Na)

7.70 

8.09 

8.26 

8.17 

8.17 

8.13

7.91 

7.87 

8.00 

8.52 

8.96 

9.22

8.26

Potassium 

(K)

0.14 

.14 

.14 

.14 

.14

.14

.14 

.14 

.15 

.15

0.14

Bicarbonate 

(HCOS)

2.00 

2.06 

2.11 

2.10 

2.08 

2.10

2.13 

2.03 

2.08 

2.05 

2.06 

2.00

2.06

Sulfate 

(S0<)

3.96 

4.16 

4.21 

4.33 

4.16 

4.18

4.12 

4.27 

4.18 

4.48 

4.85 

5.00

4.35

Chloride 

(Cl)

7.84 

8.46 

8.74 

8.69 

8.32 

8.32

8.12 

8.46 

8.32 

8.88 

9.25 

9.65

8.63

Fluoride 

(F)

0.02 

.01 

.02 

.02 

.02 

.02

.03 

.02 

.01 

.03 

.01 

.02

0.02

Nitrate 

(N03)

0.02 

.02 

.02 

.01 

.01 

.02

.01 

.02 

.02 

.04 

.03 

.02

0.02

Bo

(B

pp

0

0

a Sum of determined constituents.
PART 8. WESTERN GULF OF MEXICO BASINS

SABINE RIVER BASIN 

SABINE RIVER NEAR RULIFF, TEX.

LOCATION. At gaging station at bridge on State Highway 235, 2.4 miles north of Ruliff, 

Southern Railway bridge, 4.5 miles downstream from Cypress Creek and at mile 40. 

DRAINAGE AREA. 9,440 square miles. 

RECORDS AVAILABLE.--Chemical analyses: October 1945 to September 1946, October 1947 to 

Water temperatures: October 1947 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 612 micromhos Dec. 22; minimum 

Percent sodium: Maximum, 80 Nov. 7-12; minimum, 48 Aug. 5-13. 

EXTREMES, 1945-46, 1947-55. Specific conductance: Maximum daily, 774 micromhos Dec. 26

Percent sodium: Maximum, 86 Dec. 26-27, 1948; minimum, 27 June 3-7, 10, 1946.

REMARKS.--Values reported for dissolved solids are residues on evaporation unless otherw

samples available in district office at Austin, Tex. Records of discharge for water 

WSP 1392.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954 .. 

Oct. 11-20.......

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

Nov. 1-6.........

Nov. 7-12........

Nov. 13-20. ......

Nov. 21-30.......

Dec. 1-10........

Dec. 11-20.......

Dec. 21-22.......

Dec. 23-31.......

Jan. 1-7, 1955.... 

Jan. 8-11 ........

Jan. 12-20, 22, 

29-31. ..........

Jan. 21, 23-28.. . .

Runoff 

(acrefeet)

6,600 

7,760 

9,720 

8,220 

34,590 

66,980 

58,140

28,800 

25,350 

11,680 

36,990 

21,780 

16,190

98,660 

74, 500

Silica 

(Si02) 

ppm

21 

21 

19 

18 

13 

11 

12

16 

17 

19 

14 

17 

16

14 

14

Equivalents per million

Calcium 

(Ca)

0.38 

.36 

.36 

.36 

.55 

.50 

.55

.71 

.65 

.97 

.51 

.37 

.42

.32

.44

Magnesium 

(Mg)

0.23 

.21 

.20 

.30 

.35 

.29 

.30

.21 

.21 

.33 

.21 

.31 

.34

.24 

.34

So- Potasdium sium 

(Na) (K)

1.44 

1.39 

1.53 

1.76 

3.65 

.97 

1.36

1.88 

1.86 

3.47 

1.88 

1.54 

2.27

1.43 

2.02

Bicarbonate 

(HCO,)

0.77 

.70 

.66 

.66 

.46 

.52 

.52

.46 

.44 

.52 

.29 

.33 

.28

.23 

.20

Sulfate 

(SOJ

0.13 

.11 

.14 

.20 

.42 

.35 

.40

.46 

.40 

.62 

.37 

.40 

.46

.33 

.48

Chloride 

(Cl)

1.13 

1.13 

1.27 

1.55 

3.64 

.87 

1.27

1.86 

1.86 

3.61 

1.92 

1.47 

2.26

1.41 

2.09

Fluoride 

(F)

Nitrate 

(NO,)

0.02 

.02 

.02 

.01 

.03 

.02 

.02

.02 

.02 

.02 

.02 

.02 

.03

.02 

.03

Bor

(B

pp

a Sum of determined constituents.
Feb. 1-6,16-23, 

27-28, 1955.....

Feb. 7-11, 24-26 

Feb. 12-15.......

Mar. 1-8 ........

Mar. 9-17. .......

Mar. 18-26 ......

Mar. 27-31, Apr. 

1-12 ...........

Apr. 13-22.......

Apr. 23-30.......

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

May 11-20,23-25.. 

May 22. ..........

May 21, 26-31....

June 7-14........

June 15-30 .......

July 1-10 ........

July 11-17. .......

July 18-23,30-31.. 

July 24-29. .......

Aug. 1-3.........

Aug. 4, 14-20, 

30-31. ..........

Aug. 5-13........

Aue. 21-29.......

263,400

276, 500 

130, 300

131,100

66, 270

59, 370

354,800

473, 700

216, 000

118,600

117,700 

19, 040

133,700 

108, 100

54, 470

55, 180

28, 800

20,830

49,030 

40, 300

17,910

164, 600

397,700

46.510

11

7.4 

9.0

14

17

19

10

8.8

13

15

16

9.0 

12

17

22

18

'17

9.0

11

12

11

6.2

16

11

.20 

.25

.46

.55

.66

.44

91

1Q

.58

.55 

0

.28 

.33

.46

.56

.50

.51

.21 

.35

.39

94

.16

.35

.25

.12 

.15

.24

.33

.32

.18

1 °»

.21

in

.29 

9n

.16 

.19

.26

.32

.30

.29

.15 

.21

.21

1 9

.06

.21

111111111111

.25

9Q

63 

80

04

53

61

96*

00

1 9

33

88

71

05

47

 ii

98

72 

51

22

ti

.05

95

91

.18 

.16

9^

1Q

49

.29

.21

OQ

.56 

.11

.28

14

.46

.69

.66

.61

.33

41

.51

31

.16

.49

.44

.21 

.29

.44

.56

.50

11

19

OE

17

.35

.20

9S

97

9Q

97

9O

.12 

19

1 9

.11

.07

.15

1.18

.54 

.73

1.02

1.44

1.58

Q1

4<i

.82

1 O9

1.24 

.28

.82 

.62

1 O9

1.35

1.38

1.95

.62 

1.44

1.18

.45

.28

.85

O9

.02 

.02

n°.

O9

O9

n°*

no

04

O9

.02

.02

O9

O9

O9

.02

O9

.01 

.01

.01

f!9

.02

.02

a Sum of determined constituents.
SABINE RIVER BASIN Continued

SABINE RIVER NEAR RULIFF, TEX. Continued 

Chemical analyses, water year October 1954 to September 1955--C

Date

of 

collection

Sept. 1-9, 1955..

Sept. 10-11,13-14,

21-22..........

Sept. 12, 15-20..

Sept. 23-30. .....

Total or weighted

average ......

Runoff

(acrefeet)

93,120

25,940

25,490

37,350

4,036,000

Silica

(Si02) 

ppm

12

18

15

14

11

Equivalents per million

Calcium 

(Ca)

0.21

.41

.55

.28

0.34

Magnesium 

(Mg)

0.11

.21

.27

.12

0.19

So- Potasdium sium 

(Na) (K)

0.62

1.47

2.25

.88

0.96

Bicarbonate 

(HCOS)

0.33

.57

.49

.36

0.31

Sulfate 

(SOJ

0.08

.16

.25

.11

0.27

Chloride 

(Cl)

0.51

1.35

2.31

.79

0.90

Fluoride 

(F)

Nitrate 

(NO,)

0.02

.01

.02

.02

0.02

Boro

(B) 

ppm

a Sum of determined constituents.
NECHES RIVER BASIN 

NECHES RIVER AT EVADALE, TEX.

LOCATION. At gaging station at bridge on U. S. Highway 96, 200 feet upstream from Gulf, 

Jasper County, 600 feet downstream from Mill Creek, 15 miles upstream from Village Cre

DRAINAGE AREA. 7,908 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1947 to September 1955.

Water temperatures: October 1947 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 408 micromhos Oct. 26; minimum 

Percent sodium: Maximum, 70 Nov. 21-30, Jan. 1-10, 11-20; minimum, 51 June 21-30. 

EXTREMES, 1947-55. Specific conductance: Maximum daily, 415 micromhos Nov. 29, 1952; mi

Percent sodium: Maximum, 74 Dec. 21-31, 1948; minimum, 14 June 4-18, 1950.

REMARKS. Values reported for dissolved solids are residues on evaporation unless otherwi

daily samples available in district office at Austin, Tex. Records of discharge for w

in WSP 1392.

Chemical analyses water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954 . . . 

Oct. 11-20........

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

Nov. 1-10.........

Nov. 11-20 .......

Nov. 21-30. .......

Dec. 1-10. ........

Dec. 11-20 .......

Dec. 21-31 .......

Jan. 1-10, 1955... 

Jan. 11-20........

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

Feb. 1-5 .........

Feb. 6-18,21-22,24 

Feb. 19-20, 23, 25-28

Runoff 

(acrefeet)

3,790 

3,120 

3,500 

2,010 

3,900 

10, 750

8,830 

12, 100 

35, 000 

35, 070 

42, 490 

74, 320

34, 910 

363, 700 

99, 330

Silica 

(SiOj) 

ppm

26 

26 

24 

25 

22 

16

17 

16 

18 

16 

17 

16

16 

11 

13

Equivalents per million

Calcium 

(Ca)

0.70 

.65 

.65 

.60 

.55 

.55

.60 

.60 

.52 

.35 

.32 

.35

.57 

.29 

.34

Magnesium 

(Mg)

0.43 

.37 

.37 

.30 

.23 

.23

.18 

.18 

.18 

.33 

.32 

.29

.23 

.13 

.22

Sodium 

(Na)

2. 

1. 

1. 

1. 

1. 

1.

1. 

1. 

1. 

1. 

1. 

1.

1.

Potassium 

(K)

02 

74 

69 

37 

14 

83

52 

26 

34 

59 

51 

41

17 

60 

79

Bicarbonate 

(HC03)

1.41 

1.33 

1.23 

1.16 

.88 

.77

.52 

.43 

.34 

.33 

.26 

.28

.29 

.16 

.21

Sulfate 

(S0<)

0.20 

.15 

.16 

.15 

.20 

.40

.52 

.52 

.58 

.60 

.50 

.48

.50 

.29 

.42

Chloride 

(Cl)

1.47 

1.21 

1.27 

.90 

.79 

1.38

1.21 

1.04 

1.07 

1.30 

1.35 

1.24

1.13 

.54 

.68

Fluoride 

(F)

0.02 

.02 

.02 

.02 

.01 

.02

.03 

.03 

.04 

.03 

.03 

.03

.03 

.02 

.03

Nitrate 

(NO,)

0.05 

.05 

.03 

.04 

.04 

.04

.02 

.02 

.01 

.01 

.01 

.02

.02 

.01 

.01

Bor

(B

ppm

a Sum of determined constituents.
NECHES RIVER BASIN Continued

NECHES RIVER AT EVADALE, TEX.~Continued 

Chemical analyses water year October 1954 to September 1955--

Date 

of 

collection

Mar. 1-10, 1955 .. 

Mar. 11-20 .......

Mar. 21-31 .......

Apr. 1-12 ........

Apr. 13-19, 21-26. 

Apr. 20, 27-30....

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

May ll-2a........

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. 1-9 .........

Sept. 10-20 .......

Sept. 21-30 .......

Total or weighted 

average ........

Runoff 

(acrefeet)

99,750 

69,980 

84, 500

129, 100 

490, 600 

104, 200

92,350 

34, 730 

75,830

114, 000 

46, 100 

19,780

26,260 

17,150 

9,620

15,010 

33,710 

40, 400

17, 540 

14,290 

12, 180

2, 280, 000

Silica 

(Si02) 

ppm

15 

15 

13

11 

8.6 

12

15 

14 

10

15 

16 

16

17 

18 

19

17 

16 

14

14 

15 

16

13

Equivalents per million

Calcium 

(Ca)

0.39 

.45 

.55

.49 

.25 

.50

.48 

.58 

.57

.42 

.41 

.53

.51 

.58 

.61

.53 

.56 

.51

.48 

.54 

.51

0.39

Magnesium 

(Mg)

0.27 

.30 

.33

.30 

.16 

.23

.30 

.30 

.33

.28 

.27 

.31

.33 

.34 

.35

.27 

.30 

.27

.20 

.28 

.25

0.23

So- Potasdium slum 

(Na) (K)

1.08 

1.15 

1.22

1.04 

.51 

.84

.98 

.95 

1.03

.81 

.78 

.88

1.12 

1.15 

1.19

1.15 

1.31 

1.34

1.06 

1.39 

1.38

0.91

Bicarbonate 

(HCO,)

0.23 

.26 

.34

.43 

.26 

.66

.52 

.62 

.67

.44 

.43 

.59

.62 

.72 

.82

.67 

.74 

.64

.59 

.72 

.70

0.36

Sulfate 

(SOJ

0.54 

.58 

.60

.50 

.23 

.33

.35 

.31 

.33

.35 

.31 

.31

.31 

.29 

.25

.27 

.23 

.27

.21 

.27 

.23

0.35

Chloride 

(Cl)

0.93 

1.02 

1.13

.87 

.40 

.51

.85 

.85 

.90

.68 

.68 

.79

.99 

1.02 

1.04

.96 

1.16 

1.16

.90 

1.18 

1.18

0.76

Fluoride 

(F)

0.02 

.02 

.01

.02 

.03 

.05

.01 

.02 

.01

.02 

.02 

.02

.02 

.02 

.02

.02 

.02 

.02

.02 

.02 

.02

0.02

Nitrate 

(NO,)

0.02 

.02 

.02

.01 

.01 

.02

.03 

.03 

.02

.02 

.02 

.01

.02 

.02 

.02

.03 

.02 

.03

.02 

.02 

.01

0.02

Boro

(B) 

ppm

a Sum of determined constituents.
TRINITY RIVER BASIN

TRINITY RIVER AT ROMAYOR, TEX,

LOCATION. At gaging station at bridge on State Highway 105, 1.9 miles south of Romayor, 

Colorado and Santa Fe Railway bridge and at mile 94. 

DRAINAGE AREA. 17,192 square miles. 

RECORDS AVAILABLE.--Chemical analyses: October 1945 to November 1949, February 1950 to S

Water temperatures: February 1950 to September 1951, April 1953 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 3,020 micromhos Oct. 17-19; min

Percent sodium: Maximum, 82 Oct. 17-19; minimum, 44 Apr. 11-14. 

EXTREMES, 1945-50, 1953-55. Specific conductance: Maximum daily, 3,170 micromhos Nov. 7

Percent sodium: Maximum, 86 Nov. 7, 1953; minimum, 23 June 11-20, 1946.

REMARKS. Values reported for dissolved solids concentrations less than 1,000 ppm are res

than 1,000 ppm are sums of determined constituents unless noted. Records of specific 

office at Austin, Tex. Records of discharge for water year October 1954 to September 

Chemical analyses, water year October 1954 to Septembe

Date

of 

collection

Oct. 1-6,25-26,

28, 1954.... ....

Oct. 7-16, 20-24..

Oct. 17-19 .......

Oct. 27, 29-30 . . .

Oct. 31, Nov. 1-8,

14-15, 28-30....

Nov. 9-13, 22-27.

Nov. 16-21.......

Dec. 1-10. .......

Dec. 11-20. ......

Dec. 21, 24-31 ...

Dec. 22-23.... ...

Jan. 1-12, 1955. . .

Jan. 13-18, 26-28.

Jan. 19-25, 29-31.

Runoff

(acrefeet)

31,540

17,840

1,840

50, 100

112,300

66, 030

70, 670

17,030

30, 150

19,020

4,680

21,510

32,340

87,850

Silica

(Si02) 

ppm

20

19

15

12

13

13

8.4

17

17

16

23

22

20

14

Equivalents per million

Calcium 

(Ca)

2.9*9

3.64

4.19

1.40

1.46

1.76

.85

1.80

1.87

1.30

2.20

1.91

2.05

1.25

Magnesium 

(Mg)

0.51

.76

.90

.26

.32

.36

.13

.28

.33

.70

.58

.49

.49

.27

Sodium 

(Na)

8

16

23

3

2

4

2

3

3

9

5

7

3

a Sum of determined constituents .

Potassium 

(K)

13

35

21

18

70

45

95

45

61

86

73

30

40

59

Bicarbonate 

(HCOS)

3.20

3.80

3.92

1.28

1.28

1.39

.72

1.75

1.59

1.51

1 fi4 A . UT

1.67

1.61

1.05

Sulfate 

(SOJ

1.31

2.66

3.81

.75

.81

.92

.40

.71

.92

1.00

1.29

1.17

1.33

.85

Chloride 

(Cl)

7.05

14.24

20.53

2.74

2.31

4.15

.76

2.00

3.24

3.24

9.45

4.74

6.77

3.10

Fluoride 

(F)

Nitrate 

(NO,)

0.07

.05

.04

.07

.08

.11

.05

.07

.06

.11

.13

.12

.23

.11

Bo

(B

pp
-Continued

 SuTjnqtJjuooSBX9X

average

see

261

see

909

ese 

oeg 

8*g

2IC

22g

909

22*

22e

2i8 

*99

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91'

60-

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02- 

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22' 

22'

er 

a20- 1

90- ,

90- £

F F 20- x 

20- t 

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20- srn

21 so- Kn

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12-

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SO' 20

so- 10

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TEX. 

-

 Continued

;Q- 54 to September 1955 

o0' 

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3' ,C1)

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 2.40 

.79

' 2.85

1.44

' 2.48 

3.47 

1.30

?n- 1 .

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0.75

1.61 

.85

.34

ll38

1 .30

2.76

3.36

1.55

14.24

2.03

2 7Q . f «f

6.26

2.48

2.76

7.39

5.64

9 lfi . «>o

8.46

12.41

8.46

4

4O 

.^o

11.42

2.34

Fluoride 

(F)

Nitrate 

(NOJ

0.06 

.06

.11

1 <» 

.10

.12 

.12 

.10

.08 

.03

.04

.07

.05

.08

.08

.13

.19

.07 

.10

.14

.15

.02

.02

.07

.02

.02

.03

.04

.03

.06

0.08

Bo

(B

pp

i Sum nf rlatffrmlnprt rnnafitnpntfl.
TRINITY RIVER BASIN

TRINITY RIVER AT ROMAYOR, TEX.

LOCATION.--At gaging station at bridge on State Highway 105, 1.9 miles south of Romayor, 

Colorado and Santa Fe Railway bridge and at mile 94. 

DRAINAGE AREA.--17,192 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1945 to November 1949, February 1950 to 

Water temperatures: February 1950 to September 1951, April 1953 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 3,020 micromhos Oct. 17-19; min

Percent sodium: Maximum, 82 Oct. 17-19; minimum, 44 Apr. 11-14. 

EXTREMES, 1945-50, 1953-55. Specific conductance: Maximum daily, 3,170 micromhos Nov. 

Percent sodium: Maximum, 86 Nov. 7, 1953; minimum, 23 June 11-20, 1946.

REMARKS. Values reported for dissolved solids concentrations less than 1,000 ppm are res

than 1,000 ppm are sums of determined constituents unless noted. Records of specific 

office at Austin, Tex. Records of discharge for water year October 1954 to September 

Chemical analyses, water year October 1954 to Septembe

Date

of

collection

Oct. 1-6,25-26,

28, 1954........

Oct. 7-16, 20-24. .

Oct. 17-19 ..,,..

Oct. 27, 29-30 ...

Oct. 31, Nov. 1-8,

14-15, 28-30....

Nov. 9-13, 22-27..

Nov. 16-21. ......

Dec. 1-10........

Dec. 11-20.......

Dec. 21, 24-31 ...

Dec. 22-23.......

Jan. 1-12, 1955...

Jan. 13-18, 26-28.

Jan. 19-25, 29-31.

Runoff

(acrefeet)

31,540

17,840

1,840

50, 100

112,300

66, 030

70, 670

17,030

30,150

19, 020

4,680

21,510

32,340

87,850

Silica

(Si02)

ppm

20

19

15

12

13

13

8.4

17

17

16

23

22

20

14

Equivalents per million

Calcium 

(Ca)

2.99

3.64

4.19

1.40

1.46

1.76

.85

1.80

1.87

1.30

2.20

1.91

2.05

1.25

Magnesium 

(Mg)

0.51

.76

.90

.26

.32

.36

.13

.28

 ?1 . Ov

.70

.58

.49

.49

.27

Sodium 

(Na)

8

16

23

3

2

4

2

3

3

9

5

7

3

Potassium 

(K)

13

35

21

18

70

45

95

45

61

86

73

30

40

59

Bicarbonate 

(HCOS)

3.20

3.80

3.92

1.28

1.28

1.39

.72

1.75

1.59

1.51

1.64

1.67

1.61

1.05

Sulfate 

(SOJ

1.31

2.66

3.81

.75

.81

.92

.40

.71

Q9 . y £t

1.00

1.29

1.17

1.33

.85

Chloride 

(Cl)

7.05

14.24

20.53

2.74

2.31

4.15

.76

2.00

3.24

3.24

9.45

4.74

6.77

3.10

Fluoride 

(F)

Nitrate 

(NOS)

0.07

.05

.04

.07

.08

.11

.05

.07

.06

.11

.13

.12

.23

.11

Bo

(B

pp

a Sum of determined constituents.
TRINITY RIVER BASIN Continued 

TRINITY RIVER AT ROMAYOR, TEX. Continued 

Chemical analyses, water year October 1954 to September 1955

Date 

of 

collection

Feb. 1-4, 1955... 

Feb. 5-10........

Feb. 11-13.......

Feb. 14-21, 25... 

Feb. 22-24, 26-28 

Mar. 1-23 .......

Mar. 24-31. ......

Apr. 1-9.........

Apr. 10, 15-17 ... 

Apr. 11-14.......

Apr. 18-30.......

May 1-4, 20......

May 5-14 ........

May 15-19, 21-22, 

24, 26..........

May 23, 27-31.... 

May 25 ..........

June 13-20, 27-30 

June 21-26 .......

July 1-10........

July 11-24 .......

July 25-31 .......

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

Aug. 11-20.......

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

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

Sept. 11-18 ......

Sept. 19-21, 25-30 

Sept. 22-24 ......

Total or weighted 

average .......

Runoff 

(acrefeet)

11,030 

258, 600 

53, 200 

59,900 

59,310 

74,040 

102, 800

36, 220 

141,200 

250,710 

151,100 

19,850 

15,080

49,070 

75,010 

11,110

46,170 

35,510 

21,830 

14,320 

10,710 

7,240

7,840 

8,780 

11,790 

11,930 

7,740 

7,580 

2,420

2,125,000

Silica 

(SiOa) 

ppm

17 

10 

15 

16 

17 

15 

11

15 

13 

9.0 

18 

17 

15

13 

13 

20

19 

16 

8.4 

17 

15 

14

16 

17 

15 

18 

18 

16 

16

14

Equivalents per million

Calcium 

(Ca)

1.46 

.82 

1.41 

1.47 

1.70 

1.94 

1.51

1.65 

.91 

.62 

1.78 

1.38 

2.20

2.20 

1.94 

2.98

1.90 

2.27 

2.97 

2.56 

2.40 

2.78

2.84 

2.99 

2.79 

3.13 

2.64 

2.23 

3.28

1.45

Magnesium 

(Mg)

0.36 

.14 

.19 

.23 

.26 

.44 

.29

.35 

.15 

.10 

.34 

.26 

.52

.48 

.26 

.66

.32 

.39 

.53 

.40 

.42 

.52

.48 

.54 

.53 

.59 

.52 

.41 

.60

0.28

Sodium 

(Na)

Potassium 

(K)

2.63 

.91 

3.14 

1.97 

2.85 

4.06 

1.80

2.07 

1.01 

.56 

1.85 

1.77 

3.21

3.77 

2.10 

14.97

2.32 

3.30 

7.13 

3.27 

3.08 

7.48

6.31 

10.71 

9.75 

13.73 

9.53 

5.64 

12.79

2 78

Bicarbonate 

(HCOS)

1.26 

.67 

1.13 

1.20 

1.25 

1.66 

1.41

1.51 

.84 

.59 

1.77 

1.41 

1.92

1.93 

1.79 

2.54

1.75 

2.05 

2.44 

2.39 

2.33 

2.52

2.82 

3.05 

2.88 

3.18 

2.69 

2.49 

3.13

1.33

Sulfate 

(S0<)

0.73 

.35 

.65 

.90 

.96 

1.19 

.79

.87 

.35 

.31 

.75 

.65 

1.17

1.08 

.83 

1.64

.69 

1.02 

1.79 

1.21 

.79 

.85

1.10 

1.81 

1.71 

1.83 

1.50 

1.33 

2.06

0.75

Chloride 

(Cl)

2.40 

.79 

2.85 

1.44 

2.48 

3.47 

1.30

1.61 

.85 

.34 

1.38 

1.30 

2.76

3.36 

1.55 

14.24

2.03 

2.79 

6.26 

2.48 

2.76 

7.39

5.64 

9.36 

8.46 

12.41 

8.46 

4.43 

11.42

2.34

Fluoride 

(F)

Nitrate 

(NO,)

0.06 

.06 

.11 

.13 

.12 

.12 

.10

.08 

.03 

.04 

.07 

.05 

.08

.08 

.13 

.19

.07 

.10 

.14 

.15 

.02 

.02

.07 

.02 

.02 

.03 

.04 

.03 

.06

0.08

Bo

(

p
BRAZOS RIVER BASIN

BRAZOS RIVER AT RICHMOND, TEX.

LOCATION. At gaging station at bridge on U. S. Highway 59 in Richmond, Fort Bend County, 

Railroad bridge and at mile 93.

DRAINAGE AREA. 44,050 square miles, approximately, of which 9,240 square miles is probab

RECORDS AVAILABLE.--Chemical analyses: October 1945 to September 1955.

Water temperatures: November 1950 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 1,870 micromhos May 31; minimum 

Percent sodium: Maximum, 60 May 29-31, June 1, 9-11; minimum, 26 Apr. 14-21, May 20-21

EXTREMES, 1945-55.--Specific conductance: Maximum daily, 2,540 micromhos Sept. 4, 1951; m

Percent sodium: Maximum, 76 Dec. 3-4, 1945; minimum, 18 Aug. 27-31, 1947.

REMARKS. Values reported for dissolved solids are residues on evaporation unless otherwis

daily samples available in district office at Austin, Tex. Records of discharge for wa

given in WSP 1392.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954... 

Oct. 11-19 .......

Oct. 20-31.......

Nov. 1-7, 22-23.. 

Nov. 8-21. .......

Nov. 24-30.......

Dec. 1-6.........

Dec. 7-16........

Dec. 17-27.......

Dec. 28-31.......

Jan. 1-10, 1955... 

Jan. 11-19 .......

Jan 20-21, 29-31.. 

Jan. 22-28 .......

Feb. 1-7.........

Feb. 8-18........

Feb. 19-28.......

Runoff 

(acrefeet)

13,590 

10, 400 

12,720 

19,340 

19,790 

12,420

5,570 

7,730 

10,680 

5,520 

7,550 

7,550 

7,850 

12,840

49,460 

158, 900 

31.480

Silica 

(SiOJ 

ppm

18 

17 

17 

17 

15 

15

15 

15 

16 

12 

17 

16 

16 

15

13 

11 

13

Equivalents per million

Calcium 

(Ca)

4.29 

4.59 

3.19 

3.64 

4.59 

2.10

2.89 

3.64 

3.59 

2.26 

3.14 

2.74 

2.40 

3.09

2.50 

1.54 

1.90

Magnesium 

(Mg)

1.89 

1.64 

1.07 

1.32 

1.40 

.69

.90 

1.32 

1.32 

.60 

1.07 

1.32 

.72 

1.07

.67 

.28 

.44

Sodium 

(Na)

9.09 

9.22 

3.74 

5.39 

8.09 

2.35

3.22 

5.52 

4.17 

2.35 

4.96 

4.91 

2.74 

4.09

3.04 

1.00 

2.91

Potassium 

(K)

0.17 

.16 

.10 

.12 

.15 

.10

.10 

.11 

.10 

.09 

.11 

.10 

.09 

.11

.09 

.08 

.11

Bicarbonate 

(HCO,)

2.62 

2.65 

3.21 

3.26 

3.10 

2.31

2.92 

3.69 

3.93 

2.56 

3.46 

3.11 

2.62 

3.16

2.61 

1.70 

1.82

Sulfate 

(SOJ

3.58 

3.64 

1.50 

2.46 

3.25 

.83

.98 

1.08 

1.29 

.69 

.98 

1.42 

.98 

1.48

1.08 

.44 

.60

Chloride 

(Cl)

9.45 

9.36 

3.47 

4.85 

8.04 

2.12

3.16 

5.70 

3.81 

2.09 

4.74 

4.46 

2.37 

3.58

2.59 

.71 

2.93

Fluoride 

(F)

0.01 

.01 

.01 

.01 

.01 

.02

.02 

.02 

.02 

.02 

.01

< - 01 

.01

.02

.03 

.03 

.02

Nitrate 

(NO,)

0.03 

.02 

.02 

.02 

.02 

.05

.03 

.02 

.02 

.05 

.02 

.02 

.04 

.03

.06 

.06 

.02

Boro

(B) 

ppm

0.2

.1

.2

.2

.1

.1

.1

.1

.1

.2

.2

.1

.2

.1

.0

.1
BRAZOS RIVER BASIN Continued

BRAZOS RIVER AT RICHMOND, TEX. Continued

Chemical analyses, water year October 1954 to September 1955--

Date 

of 

collection

Mar. 1-3, 8-10, 

1955. ...........

Mar. 4-7 ........

Mar. 11-20 ......

Mar. 21-31 ......

Apr. 1, 6-12.....

Apr. 2-5, 13 .....

Apr. 14-21.......

Apr. 22-30.......

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

May 11-19, 22.... 

May 20-21, 23-28 

May 29-31, June 1, 

9-11. ...........

June 2 -8 .........

June 12-22,29-30. 

June 23-28 .......

July 1-13 ........

July 14-27. .......

July 28-31. .......

Aug. 1-3.........

Aug. 4-16, 18-20. 

Aug. 17, 21-31...

Sept. 1-8. ........

Sept. 9-22. .......

Sept. 23-30. ......

Total or weighted 

average .......

Runoff 

(acrefeet)

13, 500 

8,910 

10,910 

25,630 

26,480 

39,990 

152,700 

48, 840

12,790 

24,720 

156,800

136, 600 

55,460 

157,800 

72,220

62,400 

31,540 

10,630 

6,460 

34,290 

33,780

12,960 

25,930 

14, 620

1,569,000

Silica 

(Si02) 

ppm

17 

14 

16 

16 

14 

14 

12 

14

15 

14 

10

12 

15 

13 

14

12 

13 

10 

18 

18 

13

17 

15 

13

13

Equivalents per million

Calcium 

(Ca)

2.76 

2.09 

2.83 

3.18 

2.40 

2.25 

1.53 

1.40

2.40 

2.86 

2.39

5.24 

3.84 

3.59 

3.39

4.35 

4.27 

3.17 

2.96 

4.29 

2.91

3.84 

4.19 

3.89

2.99

Magnesium 

(Mg)

0.58 

.49 

.75 

.76 

.58 

.46 

.37 

.25

.59 

.70 

.41

1.23 

.82 

.82

.77

.99 

1.07 

.99 

.82 

1.15 

.67

.90 

1.23 

1.07

0.73

Sodium 

(Na)

3.83 

2.26 

3.74 

3.30 

3.13 

1.65 

.70 

.96

2.17 

2.70 

1.00

9.78 

6.48 

6.09 

4.96

7.35 

7.22 

4.65 

4.17 

7.65 

3.74

5.65 

7.83 

6.52

4.13

Potassium 

(K)

0.11 

.09 

.11 

.11 

.12 

.09 

.11 

.13

.14

.18 

.14 

.14 

.14

.15 

.14 

.13 

.13 

.15 

.12

.13 

.15 

.13

0.1-3

Bicarbonate 

(HCOS)

2.34 

2.05 

2.84 

2.92 

2.41 

2.13 

1.72 

1.57

2.47 

2.87 

2.33

2.03 

1.97 

1.88 

2.03

2.05 

2.16 

2.41 

2.34 

2.38 

2.16

2.67 

2.39 

2.72

2.16

Sulfate 

(SOJ

1.19 

.77 

.81 

1.33 

.87 

1.00 

.37 

.35

.96 

1.10 

.60

4.16 

2.64 

2.56 

2.21

3.10 

3.12 

1.89 

1.64 

3.23 

1.73

2.33 

3.27 

2.71

1.74

Chloride 

(Cl)

3.61 

1.97 

3.61 

2.96 

2.85 

1.24 

.51 

.79

1.92 

2.37 

.85

10.44 

6.71 

6.06 

4.79

7.76 

7.61 

4.48 

3.98 

7.56 

3.53

5.50 

7.76 

6.20

4.09

Fluoride 

(F)

0.02 

.01 

.02 

.02 

.03 

.03 

.03 

.03

.02 

.02 

.02

.02 

.02 

.01 

.01

.03 

.02 

.03 

.00 

.01 

.01

.01 

.01 

.01

0.02

Nitrate

(NOJ

0.06 

.04 

.03 

.05 

.05 

.05 

.04 

.01

.02 

.02 

.07

.04 

.05 

.05 

.04

.03 

.02 

.02 

.05 

.02 

.04

.02 

.03 

.02

0.04

Boro

(B) 

ppm

0.26 

.14 

.20 

.18 

.18 

.10 

.12 

.12

.20 

.14 

.12

.16 

.13 

.19 

.12

.14 

.12

.0

.14 

.1

.13 

.10 

.1

0.14

a Sum of determined constituents.
COLORADO RIVER BASIN

COLORADO RIVER AT AUSTIN, TEX.

LOCATION.--At raw-water intake at Austin City Water Plant, 4j miles upstream from gaging 

Highway 183, at southeast edge of Austin, Travis County, 2.8 miles upstream from Walnut 

5 miles downstream from Barton Creek, and at mile 290.

DRAINAGE AREA.--38,400 square miles, approximately, of which 11,900 square miles is probab

RECORDS AVAILABLE.--Chemical analyses: October 1947 to September 1955.

Water temperatures: October 1947 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 503 micromhos Mar. 28; minimum 

Percent sodium: Maximum, 32 Aug. 1-31, Sept. 1-30; minimum, 25 Dec. 1-31. 

EXTREMES, 1947-55.--Specific conductance: Maximum daily, 591 micromhos July 1, 1948; min

Percent sodium: Maximum, 46 Nov. 1-30; minimum, 15 Nov. 1-30, 1953, Jan. 1-31, 1954.

REMARKS.--Values reported for dissolved solids are residues on evaporation unless otherwis

samples available in district office at Austin, Tex. Records of discharge for water y

1392. No appreciable inflow between sampling point and gaging station except during p

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-30 ,1954. 

Nov. 1-30 ......

Jan. 1-31, 1955. 

Feb. 1-28 ......

Mar. 1-31......

Apr. 1-30 .....

May 1-31.......

July 1-31.......

Aug. 1-31 ......

Sept. 1-30......

Total or weighted 

average .....

Runoff 

(acrefeet)

17,710 

18,390 

16,670 

17,630 

29,410 

28,090

57,100 

111,400 

250,100 

172,500 

137,400 

100, 500

956,900

Silica 

(SiOa) 

ppm

10 

11 

9.6 

9.4 

9.4 

7.8

8.4 

7.6 

9.0 

7.2 

8.8 

9.6

8.6

Equivalents per million

Calcium 

(Ca)

2.15 

2.25 

2.20 

2.27 

2.11 

2.71

2.10 

2.10 

2.05 

2.08 

2.04 

2.16

2.10

Magnesium 

(Mg)

0.99 

1.07 

1.15 

1.07 

1.23 

.55

1.07 

.99 

.99 

.90 

.90 

.80

0.99

Sodium 

(Na)

Potassium 

(K)

1.14 

1.16 

1.13 

1.29 

1.36 

1.33

1.33 

1.35 

1.33 

1.28 

1.37 

1.40

1.35

Bicarbonate 

(HC03)

2.92 

3.02 

3.00 

2.95 

3.03 

2.95

2.85 

2.85 

2.69 

2.65 

2.62 

2.65

2.74

Sulfate 

(SO*)

0.37 

.42 

.44 

.46 

.50 

.48

.46 

.46 

.46 

.44 

.44 

.48

0.46

Chloride 

(Cl)

0.96 

1.02 

1.02 

1.18 

1.13 

1.13

1.16 

1.10 

1.18 

1.13 

1.21 

1.21

1.16

Fluoride 

(F)

0.02 

.01 

.01 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.02 

.01

0.02

Nitrate 

(NO,)

0.01 

.01 

.01 

.02 

.02 

.01

.01 

.01 

.02 

.02 

.02 

.01

0.02

Bo

(B

pp

a Sum of'determined constituents.
COLORADO RIVER BASIN Continued

COLORADO RIVER AT WHARTON, TEX.

LOCATION.--At gaging station at bridge on U. S. Highway 59 in Wharton, Wharton County, 

Railroad bridge, 12 miles downstream from Jones Creek and at mile 67.

DRAINAGE AREA. 41,380 square miles, approximately, of which 11,900 square miles is pro

RECORDS AVAILABLE.--Chemical analyses: April 1944 to September 1955.

Water temperatures: October 1945 to September 1948, March 1950 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 621 micromhos Mar. 21; minimu

Percent sodium: Maximum, 29 Aug. 1-31, Sept. 1-30; minimum, 21 May 20-26. 

EXTREMES, 1944-55.--Specific conductance: Maximum daily, 721 micromhos Oct. 3, 1952; m

Percent sodium: Maximum, 43 Nov. 1-30, 1951; minimum, 7 Jan. 19-24, 1945.

REMARKS. Values reported for dissolved solids are residues on evaporation unless other

daily samples available in district office at Austin, Tex. Records of discharge for 

tfSP 1392.

Chemical analyses, water year October 1954 to Septe

Date 

of 

collection

Oct. 1-31, 1954.. 

Nov. 1-31 .......

Dec. 1-31 .......

Jan. 1-31, 1955..

Feb. 1-5, 16-28.. 

Feb. 6-15 .......

Mar. 1-31 .......

Apr. 1-30 .......

May 1-19, 27-31 . 

May 20-26 .......

July 1-31........

Aug. 1-31 .......

Sept. 1-30 ......

Total or weighted 

average ......

Runoff 

(acrefeet)

22,750 

20,560 

21,390 

24,790

18,160 

56,330 

22,160 

41,720

53,500 

58,990 

204,900 

141,600

109,400 

69,480

865,700

Silica 

(Si02) 

ppm

16 

10 

7.8 

9.5

12 

16 

8.6 

7.6

11 

13 

12 

10

12 

13

12

Equivalents per million

Calcium 

(Ca)

2.40 

2.54 

2.69 

2.59

2.50 

1.60 

2.69 

2.25

2.28 

1.90 

2.00 

2.18

2.08 

2.13

2.15

Magnesium 

(Mg)

1.15 

1.23 

1.23 

1.15

.90 

.49 

1.15 

.99

.90 

.44 

.90 

.90

.90 

.99

0.90

Sodium 

(Na)

1.26 

1.26 

1.30 

1.52

1.26 

.70 

1.57 

1.26

1.13 

.61 

1.13 

1.22

1.26 

1.35

1.17

Potassium 

(K)

0.12 

.11 

.10 

.10

.12 

.09 

.12 

.12

.13 

.13

.13 

.13

0.12

Bicarbonate 

(HCOS)

3.34 

3.52 

3.62 

3.41

3.08 

1.90 

3.65 

2.98

2.75 

2.06 

2.54 

2.69

2.69 

2.79

2.70

Sulfate 

(S04)

0.44 

.48 

.52 

.58

.60 

.37 

.60 

.48

.48 

.35 

.50 

.50

.48 

.50

0.48

Chloride 

(Cl)

1.13 

1.13 

1.18 

1.35

1.04 

.56 

1.33 

1.10

1.07 

.51 

1.13 

1.30

1.18 

1.30

1.10

Fluoride 

(F)

0.02 

.00 

.02 

.02

.02 

.03 

.02 

.02

.02 

.02 

.01 

.01

.00 

.00

0.01

Nitrate 

(NO,)

0.02 

.01 

.02 

.02

.05 

.07 

.02 

.02

.02 

.06 

.03 

.02

.04 

.02

0.03

Bo

(B

pp

0

0

a Sum of determined constituents.
GUADALUPE RIVER BASIN

GUADALUPE RIVER AT VICTORIA, TEX.

LOCATION.--At gaging station at bridge on U. S. Highway 59 in Victoria, Victoria County, 1

Railroad bridge, 10 miles upstream from Coleto Creek, and at mile 51. 

DRAINAGE AREA. 5,161 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1945 to September 1946, October 1948 to Se

Water temperatures: November 1950 to September 1955.

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 876 micromhos Oct. 22; minimum d

Maximum, 43 Nov. 11-20; minimum, 24 June 1-10. 

1948-55. Specific conductance: Maximum daily, 1,950 micromhos Jan. 11

Percent sodium:

EXTREMES, 1945-46

Sept. 1, 1953.

Percent sodium: Maximum, 67 July 23-24, 1950; minimum, 18 May 22-29, 1950. 

REMARKS. Values reported for dissolved solids are residues on evaporation unless otherwis

daily samples available in district office at Austin, Tex. Records of discharge for wa

in WSP 1392.

Chemical analyses, water year October 1954 to September 19

Date 

of 

collection

Oct. 1-10, 1954 . 

Oct. 11-20 ......

Oct. 21-31 ......

Nov. 11-20 .....

Nov. 21-30 ......

Dec. 1-10 .......

Dec. 11-20 ......

Dec. 21-31 ......

Jan. 1-10, 1955. .

Feb. 1-6 .......

Feb. 7-21 .......

Feb. 22-28 ......

Mar. 1-10 ......

Mar. 11-20......

Mar. 21-31 .....

Runoff 

(acrefeet)

2,220 

2,010 

3,220 

3,380 

4,710 

3,830

4,190 

6,010 

4,660 

4,730 

4,810 

6,350

14,720 

33,940 

4,110 

5,550 

5,140 

9,550

Silica 

(Si02) 

ppm

21 

20 

17 

23 

22 

18

16 

16 

15 

15 

17 

16

18 

16 

15 

16 

7.8 

16

Equivalents per million

Calcium 

(Ca)

2.40 

2.50 

2.50 

2.40 

2.20 

2.40

2.69 

2.54 

2.45 

2.25 

2.84 

2.05

2.05 

2.05 

2.69 

2.77 

2.36 

2.59

Magnesium 

(Mg)

1.40 

1.48 

1.56 

1.64 

1.73 

1.56

1.73 

1.64 

1.73 

1.56 

1.56 

1.56

1.40 

.63 

1.07 

1.15 

1.32 

1,15

Sodium 

(Na)

2. 52 

2.78 

2.96 

3.00 

3.04 

2.35

2.30 

2.35 

2.35 

2.44 

2.35 

2.30

2.17 

1.13 

1.61 

1.83 

2.17 

1.91

Potassium 

(K)

0.09

.09 

.09 

.09 

.09

.09 

.08 

.08 

.08 

.07 

.07

.07 

.09 

.08 

.08 

.08 

.09

Bicarbonate 

(HC03)

3.62 

3.61 

3.70 

3.67 

3.44 

3.59

3.85 

3.70 

3.65 

3.41 

4.13 

3.39

3.18 

2.47 

3.26 

3.38 

3.11 

3.33

Sulfate 

(SOJ

0.60 

.65 

.71 

.75 

.75 

.69

.73 

.73 

.73 

.67 

.65 

.69

.65 

.50 

.71 

.69 

.75 

.73

Chloride 

(Cl)

2.23 

2.48 

2.74 

2.71 

2.88 

2.17

2.20 

2.17 

2.14 

2.14 

1.97 

1.97

1.81 

.90 

1.38 

1.78 

2.00 

1.69

Fluoride 

(F)

0.02 

.02 

.02 

.01 

.01 

.01

.02 

.02 

.02 

.02 

.02 

.02

.03 

.02 

.02 

.02 

.02 

.02

Nitrate 

(N03)

0.02 

.02 

.02 

.02 

.02 

.03

.02 

.02 

.02 

.02 

.03 

.03

.04 

.06 

.08 

.05 

.03 

.05

Boron 

(B) 

ppm

0.22 

.19 

.18 

.23 

.16 

.21

.16 

.28 

.21 

.18 

.18 

.18

.16 

.08 

.12 

.24 

.26 

.17
GUADALUPE RIVER BASIN Continued 

GUADALUPE RIVER AT VICTORIA, TEX. Continued 

Chemical analyses, water year October 1954 to September 1955--Co

Date 

of 

collection

Apr. 1-10, 1955 .

Apr. 21-30 ......

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

May 11-20 ......

May 21-31 ......

July 11-20.......

July 21-31.......

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

Aug. 11-20 ......

Aug. 21-31 ......

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

Sept. 11-20 .....

Sept. 21-30......

Total or weighted 

average. ......

Runoff 

(acrefeet)

9,270 

4,400 

3,610 

2,340 

12,510 

32,550

27,330 

14,320 

5,790 

3,240 

3,020 

6,910

3,690 

4,100 

5,170 

4,330 

2,810 

2,270

270, 800

Silica 

(Si02) 

ppm

14 

15 

15 

19 

20 

17

21 

18 

20 

21 

22 

17

21 

21 

18 

18 

18 

18

18

Equivalents per million

Calcium 

(Ca)

2.69 

2.64 

2.50 

2.34 

2.42 

2.25

2.35 

2.07 

2.35 

2.28 

2.61 

2.45

2.01 

2.15 

1.98 

2.15 

2.02 

2.36

2.30

Magnesium 

(Mg)

1.23 

1.32 

1.15 

1.32 

1.32 

.55

.75 

.53 

.76 

.72 

.99 

1.32

1.15 

1.07 

.72 

.99 

.70 

.90

0.99

Sodium 

(Na)

1.74 

1.96 

1.96 

2.13 

2.09 

.96

1.00 

1.04 

1.52 

1.52 

1.91 

2.26

1.70 

1.61 

1.43 

1.57 

1.48 

1.65

1.65

Potassium 

(K)

0.09 

.09 

.09

.10 

.12 

.12 

.13 

.11 

.10

.09 

.10 

.10 

.10 

.10 

.10

0.09

Bicarbonate 

(HCO,)

3.52 

3.54 

3.31 

3.24 

3.41 

2.46

2.88 

2.23 

2.70 

2.67 

3.38 

3.43

3.05 

3.08 

2.67 

3.10 

2.77 

3.26

3.02

Sulfate 

(S04)

0.58 

.62 

.69 

.67 

.60 

.52

.44 

.48 

.50 

.48 

.56 

.60

.44 

.44 

.35 

.42 

.35 

.44

0.56

Chloride 

(Cl)

1.52 

1.69 

1.58 

1.95 

1.89 

.73

.85 

.99 

1.55 

1.47 

1,72 

2,00

1.44 

1.41 

1.24 

1.27 

1.16 

1.30

1.44

Fluoride 

(F)

0.03 

.02 

.03 

.02 

.02 

.03

.02 

.02 

.01 

.02 

.01 

.01

.01 

.01 

.01 

.02 

.03 

.02

0.02

Nitrate 

(NO,)

0.04 

.04 

.04 

.02 

.02 

.06

.06 

.05 

.04 

.04 

.02 

.01

.02 

.02 

.03 

.02 

.02 

.01

0.04

Boro

(B) 

ppm

0.17 

.16 

.19 

.22 

.28 

.17

.21 

.13 

.12 

.23 

.22 

.23

.03 

.13 

.05 

.25 

.23 

.23

0.17

a Sum of determined constituents.
NUECES RIVER BASIN

NUECES RIVER NEAR MATHIS, TEX.

LOCATION. At intake tower at Lake Corpus Christi, 0.8 mile upstream from gaging statio

from Texas and New Orleans Railroad bridge and 4 miles southwest of Mathis San Patr

DRAINAGE AREA.--16,660 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1947 to September 1955.

vifater temperatures: October 1947 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 817 micromhos May 18; minimum 

Percent sodium: Maximum, 53 May 1-31; minimum, 34 Oct. 1-31. 

EXTREMES, 1947-55. Specific conductance: Maximum daily, 1,040 micromhos July 1, 1948; 

Percent sodium: Maximum, 63 May 1-20, 1953; minimum, 24 Sept. 1-30, 1953.

REMARKS. Values reported for dissolved solids are residues on evaporation unless other

samples available in district office at Austin, Tex. Records of discharge for water 

WoJr l«Ji7£ .

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-31, 1954. . 

Nov. 1-30 .......

Dec. 1-31 .......

Jan. 1-31, 1955.. 

Feb. 1-28 .......

Mar. 1-31.......

Apr. 1-30 ......

May 1-31 .......

July 1-31 ......

Aug. 1-31 ......

Sept. 1-30.. ....

Total or weighted 

average. .....

Runoff 

(acrefeet)

4,450 

7,650 

3,590 

2,980 

3,020 

4,260

4,410 

17,260 

15,180 

5,550 

6,120 

22,930

97,400

Silica 

(Si02) 

ppm

27 

26 

24 

25 

22 

18

23 

20 

22 

24 

24 

23

23

Equivalents per million

Calcium 

(Ca)

2.69 

2.50 

2.40 

2.54 

2.59 

2.54

2.69 

2.59 

2.10 

2.20 

2.48 

2.19

2.40

Magnesium 

(Mg)

0.44 

.40 

.39 

.44 

.37 

.37

.45 

.37 

.30 

.32 

.26 

.25

0.34

Sodium 

(Na)

1.74 

2.26 

2.30 

2.65 

2.78 

3.17

3.52 

3.61 

2.65 

2.61 

2.74 

2.30

2.74

Potassium 

(K)

0.22 

.21 

.20 

.20 

.20 

.21

.21 

.23 

.19 

.18 

.18 

.17

0.19

Bicarbonate 

(HC03)

3.52 

3.29 

3.28 

3.39 

3.56 

3.74

a4.00 

3.75 

2.95 

3.15 

3.38 

2.88

3.29

Sulfate 

(SOJ

0.54 

.69 

.71 

.83 

.81 

.83

.83 

.96 

.81 

.81 

.83 

.73

0.79

Chloride 

(Cl)

1.07 

1.27 

1.18 

1.64 

1.47 

1.66

1.86 

2.06 

1.44 

1.35 

1.35 

1.18

1.47

Jluoride 

(F)

0.01 

.01 

.03 

.03 

.03 

.03

.03 

.03 

.02 

.02 

.01 

.01

0.02

Nitrate 

(NO,)

0.05 

.03 

.03 

.03 

.02 

.03

.04 

.06 

.07 

.05 

.06 

.05

0.05

B

p

0.

.

.

.

.

.

.

.

.

.

.

0.

a Includes 0. 33 equivalent per million of carbonate (COS). 

b Sum of determined constituents.
RIO GRANDE BASIN 

RIO GRANDE ABOVE CULEBRA CREEK NEAR LOBATOS, C

LOCATION. Half a mile southeast of La Sauces, 7 miles upstream from Culebra Creek, and 

Lobatos, Conejos County. 

DRAINAGE AREA. 7,700 square miles, approximately above gaging station (includes 2,940 s

San Luis Valley, Colo.).

RECORDS AVAILABLE. Chemical analyses: October 1946 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum observed, 748 micromhos June 30; mini

Percent sodium: Maximum, 66 May 18-21, 30-31, minimum not determined. 

EXTREMES, 1946-55. Specific conductance: Maximum observed, 1,070 micromhos July 26, 19

Percent sodium: Maximum, 66 May 18-21, 30-31, 1955; minimum, 16 Dec. 1, 3-10, 1946.

REMARKS Values reported for dissolved solids are residues on evaporation. Records of 

in district office at Albuquerque, N. Mex. Records of discharge for gaging station n

September 1955 given in WSP 1392. Stage-discharge relation affected by ice Dec. 7-10

which enters the Rio Grande between the sampling point and the gaging station is usua

sources between sampling point and gaging station occurs only after heavy rainfall. 

CORRECTION. WSP 1430: Weighted average for dissolved solids for period October 1953 to 

225 ppm.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954 .. 

Oct. 11-20.......

Oct. 21-31, Nov. 

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

Nov. 11-20 ......

Dec. 1-10 .......

Dec. 11-20 ......

Dec. 21-Jan. 26, 

1955 ...........

Feb. 11-20 ......

Feb. 21-28 ......

Runoff 

(acrefeet)

1,030 

892

2,030 

1,150 

1,360

2,010 

2,400

11,960 

1,830

3,770 

3,980 

3.200

Silica 

(Si02) 

ppm

38 

38

Equivalents per million

Calcium 

(Ca)

1.70 

1.65

1.75

1.50

Magnesium 

(Mg)

0.67 

.58

.57

.45

Sodium 

(Na)

1.22 

1.13

1.09

.91

Potassium 

(K)

0.17

.12

Bicarbonate 

(HCOj)

2.56

2.08

Sulfate 

(SOJ

0.92

.69

Chloride 

(Cl)

0.24

.15

Fluoride 

(F)

0.03

.02

Nitrate 

(NO,)

0.01

.00

B

p

0.
Mar. 11-21 .......

Mar. 22-Apr. 10.. 

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

May 18-21, 30-31.. 

May 22-29 ........

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.......

Total or weighted 

average ........

3,500 

3,630

1,220

524

281

1,490

1,580 

2,670

1,660

1,600

625

326

199

191

410

386

454

623

284

227

62,130

31

--

9Q

_-

..

1.85 

2.09

2.15

2.00

1.25

1.25 

1.35

1.45

1.65 2 SQ

2.79

2.50

2.20

2.10

2.20 2 ns

1.80

1.85

1.90

.53 

.90

.99

QO

.49

.49 

.58

.56

.70

1 19

1.40

1.23

1.07

.82

.90

.82

.64

.67

.68

1.52 

1.70

1.87

1.83

1.74

3.39

1 90

917

1.52

2.74 3 9(1

3.04

3.09

2.44

2.87

9 91

1 91

2 no

2.13

.15

--

.20

__

2.36 

2.75

2.92

3.08

2.36

3.31 

2.49

2.79

2.79

2.98

3.18

3.15

3.23

3.57

3.69

9 94

9 Q9

111

3.20

1.23

--

3.89

__

_.

_-

.34

--

.62

__

--

.03

--

.06

-_

.01

__

--

__

.01

__

--

.17

__

--

.22
RIO GRANDE BASIN Continued

RIO GRANDE AT OTOWI BRIDGE NEAR SAN ILDEFONSO, N

LOCATION.--At gaging station on downstream side of pier of former railway bridge, (now remo

Highway 4, If miles southwest of San Ildefonso Pueblo, 2| miles downstream from Pojoaque 

7. miles west of Pojoaque, Santa Fe County.

DRAINAGE AREA. 14,300 square miles, approximately (includes 2,940 square miles in closed b

RECORDS AVAILABLE. Chemical analyses: October 1946 to September 1955. 

Water temperatures: October 1948 to September 1955. 

Sediment records: October 1947 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum observed, 1,090 micromhos Aug. 21; minim

Percent sodium: Maximum, 32 Nov. 1-20; minimum 15, May 21-31. 

EXTREMES, 1946-55.--Specific conductance: Maximum observed, 1,230 micromhos Aug, 26, 1951; 

Percent sodium: Maximum, 34 Jan. 21 to Feb. 10, 1954; minimum, 14 June 11-20, 1949, May 

REMARKS. Values reported for dissolved solids are sums of determined constituents. Record

available in district office at Albuquerque, N, Mex. Records of discharge for water yea

1392. Stage-discharge relation affected by ice Jan. 23, 24, Feb. 4-8, Feb. 20-24.

Chemical analyses, water year October 1954 to September 1

Date 

of 

collection

Oct. 1-10, 1954 .. 

Oct. 11-20.......

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

Nov. 11-20 ......

Nov. 21-30 ......

Dec. 1-10. .......

Dec. 11-20..... ..

Dec. 21-31. ......

Jan. 1-10, 1955 .. 

Jan. 11-20.......

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

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

Feb. 11-20 ......

Feb. 21-28 ......

Runoff 

(acrefeet)

6,690 

6,070 

6,350 

6,240 

6,340 

6,610

7,130 

7,670 

8,530 

9,260 

9,290 

9,920

9,380 

9,780 

8.210

Silica 

(Si02) 

ppm

31 

31 

31 

29 

30 

30

32 

34 

34 

31 

31 

34

36 

36 

33

Equivalents per million

Calcium 

(Ca)

2.40 

2.10 

2.20 

2.20 

2.25 

2.30

2.30 

2.40 

2.30 

2.20 

2.05 

2.10

1.80 

2.00 

2.00

Magnesium 

(Mg)

0.82 

.99 

.82 

.82 

.81 

.90

.99 

.82 

.76 

.74 

.72 

.68

.82 

.74 

.81

Sodium 

(Na)

1.43 

1.35 

1.35 

1.39 

1.43 

1.43

1.43 

1.43 

1.22 

1.13 

1.09 

1.09

1.17 

1.13 

1.17

Potassium 

(K)

Bicarbonate 

(HC03)

3.05 

2.92 

2.88 

2.92 

3.00 

2.97

2.97 

3.02 

2.85 

2.70 

2.57 

2.64

2.49 

2.59 

2.62

Sulfate 

(S0<)

1.48 

1.29 

1.31 

1.33 

1.35 

1.39

1.46 

1.35 

1.21 

1.08 

1.04 

1.02

1.00 

.96 

1.04

Chloride 

(Cl)

0.28 

.31 

.28 

.28 

.31 

.28

.31 

.34 

.28 

.28 

.27 

.27

.25

.27 

.27

Fluoride 

(F)

Nitrate 

(NO,,)

0.02 

.00 

.00 

.00 

.01 

.01

.01 

.01 

.01 

.01 

.01 

.01

.01 

.01 

.01

Boron 

(B) 

ppm
Mar. 1-10, 1955. . Mar. 11-17, 19-20 

Mar. 18

Mar. 21-28, 30-31 

Mar. 29

Apr. 1-10

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

May 1-4, 6-10...

May 21-31 .......

June 1-10. .......

July 1-11 ........

July 12-15, 17-20 

July 21-28, 30-31

July 16, 29, Aug. 6, 

8-10 ...........

Aug. 1-5, 7. .....

Aug. 21 .........

Aug. 22-28 ......

Aug. 29, Sept. 10 

Sept. 11-20......

Sept. 21-30 ......

Total or weighted 

average ......

12,230 

10,710 

1,660

8,200 

978

7,260

7,670

6,850

13,410 

1,310

26,180

47,830

24,590

12,990

13,360

8,940 

6,950

7,620

5,910

13,980

4,010

16,160

31,250 

9,340

4,770

432,000

30 

28 

22

29 

23

30

32

27

22 

24

19

18

20

20

25

25 

28

23

31

26

17

24

22 

26

29

26

2.20 

2.20 

3.84

2.15 

3.54

2.20

2.30

2.20

2.00 3 RQ

2.25

2.05

1.65

1 Qfl

1.85

1.80

3.19 

2.64

4.74

3.04

3.54

8.08

2.15 

2.30

2.20

2.35

.67 

.79 

1.32

.74 

1.48

.82

.90

.70

.72 

1.64

.64

.57

.54

^4

.62

.61

.90 

.82

1.32

.74

2.38

1.15

.56 

.74

.81

0.76

1.13 

1.22 

2.17

1.30 

2.00

1.35

1.26

1.17

.84 

2.35

.78

.48

.16

.74

.78

.65

1.13

1.04

1.87

1.13

1.17

2

1.26

.52 

.96

1.13

1.00

.73

2.56 

2.49 

3.18

2.67 

3.11

2.70

2.72 2 7fl

2.46 

3 44

2.64

2.34 2 91 2 1 °.

3.03 

2.77 3

co

3.33 3

CQ

4

KA

3 

A A

2.13

2.75

2.64

1.21 

1.33 

3.77

1.25 

3.48

1.25

1.44

1.06

.81 

3.60

.85

.62

.54

.81

90

T\

1.89 

1.52

4.02

1.35

1.81

8.33

1.04

1.12

1.27

.25 

.23 

.39

.28 

.37

.34

.31

0 A

.25

.51

.22

.17

.16

.21

.21

.20

.24 

.23

.27

.28

.23

01

.24

.13 

.20

.28

0.24

.01 

.01 

.01

.01 

.03

.00

.01

.01

.02 

02

.02

n9

.01

.01

.01

.01

.01 

.03

no

.03

no

.01

.03

.02 

.01

.01

0.02
RIO GRANDE BASIN Continued

RIO GRANDE CONVEYANCE CHANNEL AT SAN MARCIA

LOCATION. At gaging station 440 feet downstream from grade control at outlet of San Mar

drain entering from left side, 1,800 feet west of San Marcial gage on railway bridge, 

about 1 mile south of the site of the former village of San Marcial, Socorro County. 

RECORDS AVAILABLE.--Chemical analyses: March 1954 to September 1955.

Sediment records: March 1954 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum observed, 2,560 micromhos July 25; mi

Percent sodium: Maximum, 57 April 21-30; minimum, 36 July 25, 28-29. 

EXTREMES, 1954-55.--Specific conductance: Maximum observed, 2,560 micromhos July 25, 19

Percent sodium: Maximum, 59 Mar. 11-18, 1954; minimum, 36 July 25, 28-29, 1955.

REMARKS. Values reported for dissolved solids are residue on evaporation. Records of s

in district office at Albuquerque, N. Mex. Records of discharge for water year Octob

district office at San Marcial given under Rio Grande at San Marcial in WSP 1392. Che

page 104.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954 . . 

Oct. 11-20.......

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

Nov. 1-10 .......

Nov. 11-20. ......

Nov. 21-30. ......

Dec. 1-10. .......

Dec. 11-20. ......

Dec. 21-31 ......

Jan. 1-10, 1955 . . 

Jan. 11-20. ......

Jan. 21-31..

Runoff 

(acrefeet)

4,460 

2,500 

646 

720 

976 

2,500

3,560 

5,600 

6,300 

8,380 

9,110 

9,720

Silica 

(Si02) 

ppm

22 

32

Equivalents per million

Calcium 

(Ca)

7.93 

6.89 

6.79 

5.74 

5.59 

4.99

4.49 

4.14 

4.29 

4.19 

3.74 

3.99

Magnesium 

(Mg)

2.71 

2.38 

3.12 

2.55 

2.30 

1.81

1.73 

1.64 

1.73 

1.32 

1.40 

1.48

Sodium 

(Na)

7.31 

7.91 

10.65 

9.26 

8.26 

5.96

5.17 

4.39 

4.70 

4.35 

4.09 

4.26

Potassium 

(K)

0.21

.14

Bicarbonate 

(HC03)

3.75

3.90 

3.70 

4.00 

3.80 

3.47 

3.64

Sulfate 

(S04)

11.76

4.16

Chloride 

(Cl)

2.62

1.95

Fluoride 

(F)

0.04

.04

Nitrate 

(NO,)

0.01

.01

Bo

(B

pp

0.2

.
Feb. 11-20. .......

Mar. 11-20 .......

Mar. 21-31 .......

Apr. 1-10. ........

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

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

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

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

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

June 1-10.. .......

June 21-30........

July 1-10 .........

July 11-20........

July 21-23,26-27, 

30-31............

July 24 ...........

July 24 ...........

July 25, 28-29 .... 

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

Aug. 11-20 .......

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

Sept. 11-17 .......

Sept. 18-30 .......

Total or weighted 

average

9,090

7,950

8,020

3,630

1,300

1,530

1,080

892

1,330

12, 600

5,840

980

498

476

230

6,180

323

5,190

8, 190 

13, 890

17, 470

4,340

1,450

5,660

185,690

36

30-

--

3 

on

3.74

3.59

3.99

4.64

5.24

4.69

4.44

4 >iQ

4.74

3.59

3.74

4.39

.4.94

5.29

5.74

8.83

4.49

13.27

8.73 

8.73

7.73

4.19

6.94

5.64

1.48

1.48

1.48

1.48

1.64 1 Q1

1.48

1.81

1.81

1 QQ

1 97

1.07

1. 15

1.89

9 9f)

2.30

2.80

1.32

4.28

2.55 

2.22

2.06

1 23

1 99

2.06

1.81

4.09

3.83

3.78

4.44

5.65 6

0Q

8.09

8.35 8

0Q

8.26

3.78

3.96

7 09

8.09

9.57

8.57

4.35

9 91

7.48 

6.78

6.13

4.04

4.26

5.57

5.48

.21

9S"

--

3 nQ

3.56 3

4O

3.69 3

QQ

? Q7

4.28

4 03

3.88 3 QG

4.10

Q A A

 3 A1)

3 

Kg

3.77 4

QQ

4 91

2.64 4

QQ

4.33 

4.00

4 

no

3.61

3 

(=7

3.88

3.67

6.35

7.12-

-_

4 79"

--

no

no

--

.-

.05

.06

--

_.

.36

?>i

--

-.
RIO GRANDE BASIN--Continued

RIO GRANDE FLOODWAY AT SAN MARCIAL, N. MEX.

LOCATION. At gaging station at Atchison, Topeka & Santa Fe Railway bridge, 1.1 miles downst

County, and 18| miles southwest of San Antonio. 

DRAINAGE AREA. 27,700 square miles, approximately. (Includes 2,940 square miles in closed b

Colo.) .

RECORDS AVAILABLE.--Chemical analyses: July 1946 to September 1955. 

Water temperatures: January 1949 to September 1955. 

Sediment records: July 1946 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum observed, 2,210 micromhos, Aug. 12; minim

Percent sodium: Maximum, 52 June 11-14; minimum, 30 May 28-31. 

EXTREMES, 1946-55.--Specific conductance: Maximum observed, 2,730 micromhos Apr. 8, 1953; m

Percent sodium: Maximum, 65 May 1-10, 1951; minimum, 22 Nov. 21-22, 28-30, 1947, June 21-

REMARKS. Values reported for dissolved solids are residue on evaporation. Records of specif

district office at Albuquerque, N. Mex. Records of chemical analyses and sediment loads 

in Water Bulletins of International Boundary and Water Commission. Records of discharge 

furnished by Santa Fe district office of Surface Water Branch; records of composite disch

San Marcial Rio Grande floodway at San Marcial given under Rio Grande at San Marcial in W

conveyance channel given on page 102.

Chemical analyses, water year October 1954 to September 1955

Date 

of 

collection

Oct. 1-6, 8-10,1954 

Oct. 7 ............

Oct. 11-15........

Oct. 16-30.. ......

May 28-31, 1955 ... 

June 1-10. ........

June 11-14. .......

July 29-31 ........

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

Aug. 11-20 .......

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

Sept. 1-9 .........

Total or weighted 

average ........

Runoff 

(acrefeet)

4, 150 

845 

2,280 

a 702

6,410 

3,990 

a 90 

4,770

6,190 

16,610 

22,850 

a3, 290

b 72, 190

Silica 

(Si02) 

ppm

22

._

Equivalents per million

Calcium 

(Ca)

7.29 

12.67 

7.39 

4.79

3.54 

3.44 

4.24 

10.08

9.23 

9.23 

8.13 

4.84

7.73

Magnesium 

(Mg)

2.38 

3.78 

2.47 

1.73

.99 

.99 

1.32 

3.45

2.55 

2.63 

2.55 

1.48

2.38

Sodium 

(Na)

6.31 

8.44 

6.35 

5.35

1.96 

2.65 

6.09 

8.09

6.44 

6.87 

6.04 

3.70

5.79

Potassium 

(K)

0.18

__

Bicarbonate 

(HCOS)

4.00 

3.61

3.77 

3.44 

3.64 

3.70

5.05 

4.33 

4.47 

3.61

4.23

Sulfate 

(S04)

10.45

__

Chloride 

(Cl)

1.75 

1.41

__

Fluoride 

(F)

0.04

__

Nitrate 

(NOS)

0.02

__

Boron 

(B) 

ppm

0.25

_.
RIO GRANDE BASIN

RIO GRANDE BELOW ELEPHANT BUTTE OUTLET, N. MEX

LOCATION.--At gaging station 1.0 mile downstream from dam, l£ miles upstream from Cuchillo 

DRAINAGE AREA. 28,900 square miles, approximately (includes 2,940 square miles in closed b

RECORDS AVAILABLE.--Chemical analyses, 1933 to 1955.

REMARKS. Chemical analyses by the U. S. Dept. of Agriculture, Agricultural Research Servic

Records of discharge for water year October 1954 to September 1955 given in WSP 1392.

Chemical analyses water year October 1954 to September 195

Month

October 1954

November. . .

December. . .

January 1955

February . . .

April .......

July ........

September . .

Total .....

her 

of 

samples

20

25

20

25

20

20

20

25

20

25

20

20

Runoff 

(acrefeet)

266

196

179

433

188

27,080

24,000

4,810

47,810

42,220

39,390

25,210

211,800

Silica 

(Si02) 

ppm

..

.-

--

18'

--

20

--

Equivalents per million

Calcium 

(Ca)

7.18

7.01

7.71

6.70

5.31

6.22

5.24

5.25

5.46

5.05

5.42

--

Magnesium 

(Mg)

2.43

2.57

2.63

2.64

2.20

2.34

2.13

9 ^"i

2.03

1.01

1.97

--

Sodium 

(Na)

8.30

8.58

8.54

8.51

8.24

7.59

8.09

8.01

6.68

6.60

6 61

7.08

-.

Potassium 

(K)

._

_-

-.

0.24

--

.22

--

-_

Bicarbonate 

(HC03)

a2.60

1.95

b2. 15

cl.67

1.70

2.50

2.90

3.85

2.80

3.05

2 on

2.05

Sulfate 

(S04)

12.18

13.02

13.59

12.89

10.94

10.50

9.61

9.66

8.09

6.91

7

7C

9.94

Chloride 

(Cl)

3.32

3.40

3.30

3.55

3.30

3.30

3.28

S

en

3.30

3.30

3 

If)

2.55

Fluoride 

(F)

__

-_

-_

0.05

--

.04

--

Nitrate 

(NO,)

0.01

.01

.02

.01

(d)

.01

.03

(d)

.01

.01

.01

.01

Boron 

(B) 

PPm

0.20

.21

.22

.37

.05

. 18

.26

94

19

.17

9C

.26

a Includes 0. 24 equivalent per million of carbonate (CO3 ). 

b Includes 0. 20 equivalent per million of carbonate (CO3 ).

c Includes 0. 10 equivalent 

d Less than 0. 01 equivalen
RIO GRANDE BASIN Continued

RIO GRANDE NEAR EL PASO, TEX.

LOCATION. At gaging station 5 miles northwest of El Paso, Tex., 6 miles northwest of Juarez

American Dam.

DRAINAGE AREA. 29,267 square miles (from International Boundary and Water Commission Water 

RECORDS AVAILABLE. Chemical analyses, 1933 to 1955.

REMARKS. Chemical analyses by the U. S. Department of Agriculture, Agricultural Research Se

Calif. Records of discharge, electrical conductivity of individual water samples, and th

October 1954 to September 1955 given in International Boundary and Water Commission Water 

vious years given in earlier bulletins.

Chemical analyses water year October 1954 to September 1955

Month

October 1954

November . .

December . .

January 1955

February . . .

May .......

July .......

September . .

ber 

of 

samples

31

30

31

31

28

31

30

31

30

30

31

30

Total ..........

Runoff 

(acrefeet)

3,790

540

435

533

283

4,580

10, 500

2,130

6,020

15, 000

12, 100

13, 800

69,710

Silica 

(Si02) 

ppm

-.

--

--

34

--

22

-

--

Equivalents per million

Calcium 

(Ca)

1.40

7.08

4.70

5.85

6.00

6.41

6.76

6.92

5.96

4.50

4.72

5.80

--

Magnesium 

(Mg)

1.24

1.85

2.07

1.74

2.57

2.39

2.48

2.45

2.15

1.65

1.69

2.05

--

Sodium 

(Na)

9.37

26.50

26.00

25.26

28.96

10.22

9.00

11.88

9.30

6.37

6.73

7.28

--

Potassium 

(K)

__

_-

-.

0.24

--

.22

--

--

Bicarbonate 

(HC03 )

a 1.38

c6.05

dS.OO

e5.65

f 5.25

3.20

3.05

3.35

3

AR

3.10

2.90

2.65

Sulfate ' 

(SOJ

5.54

14.93

14.09

13.63

16.54

8.50

10.45

11.35

9 97

6.03

5.98

8.96

Chloride 

(Cl)

5.35

14.70

14.20

13.82

16.05

7.50

4.85

6.60

5.20

3.50

4.30

3.70

Fluoride 

(F)

_.

--

--

0.06

--

.04

-

Nitrate 

(N03)

(b)

(b)

(b)

(b)

(b)

0.04

.02

(b)

.01

(b)

.01

.03

Boron 

 (B) 

ppm

0.33

.47

.57

.66

.63

.20

.21

.30

.24

.08

.17

.22

a Includes 0.12 equivalent per million of carbonate (CO3 ). 

b Less than 0.01 equivalent per million, nitrate (NO3 ). 

c Includes 0. 48 equivalent per million of carbonate (CO,).

d Includes 0. 52 equivalent pe

e Includes 0. 64 equivalent pe

f Includes 0. 40 equivalent pe
RIO GRANDE BASIN Continued

RIO GRANDE BELOW OLD FORT QUITMAN, TEX.

LOCATION. At gaging station at the rectified channel of the Rio Grande, 1.5 miles below 

American Dam at El Paso, Tex.

DRAINAGE AREA. 31,990 square miles (United States and Mexico; from International Boundar

RECORDS AVAILABLE. Chemical analyses, 1933 to 1955.

REMARKS. Chemical analyses by the U. S. Department of Agriculture, Agricultural Research 

Calif. Records of discharge, electrical conductivity of individual water samples, and 

October 1954 to September 1955 given in International Boundary and Water Commission Wa

vious years given in earlier bulletins.

Chemical analyses water year October 1954 to September 1

Month

October 1954 

November . . . 

December . . 

January 1955 

February. . . .

May ........

July .......

September . . 

Total ...........

Number 

of 

samples

8 

4 

5 

4 

4 

3

(d) 

(d) 

1 

(d) 

4

Runoff 

(acrefeet)

2,030 

67.6 

43.2 

32.7 

20.0 

9.9

0 

.6 

3.8 

1,480 

714 

680

7,479

Silica 

(Si02) 

ppm

16 

16

Equivalents per million

Calcium 

(Ca)

6.08 

41.25 

40.82 

38.25] 

38.20 

41.45

2.95 

.85

--

Magnesium 

(Mg)

2.13 

19.23 

20.06 

19.51 

19.28 

23.11

.70 

.36

--

Sodium 

(Na)

7.22 

77.70 

76.30 

76.25 

78.80 

85.50

1.61 

5.91

--

Potassium 

(K)

0.61 

.10

--

Bicarbonate 

(HCOj)

2.18 

bS.OO 

3.40 

b2.52 

C2.60 

2.15

3.30

e2.95

Sulfate 

(S0<)

3.54 

28.65 

30.04 

27.74 

28.44 

29.75

1.46

2.95

Chloride 

(Cl)

9.80 

107.1 

104.2 

103.5 

105.8 

118.2

.56

1.20

Fluoride 

(F)

0.03

.04

_.

Nitrate 

(NO,)

(a) 

(a) 

(a) 

(a) 

(a) 

O.OJ

.02

.04

Bor

(B

PPm

0.0

.5

.5

.5

.6

.7

.1

.3

a Less than 0. 01 equivalent per million.

b Includes 0.12 equivalent per million of carbonate (CO3).

c Includes 0. 

d No samples 

e Includes 0. 
RIO GRANDE BASIN Continued

RIO GRANDE AT UPPER PRESIDIO, TEX.

LOCATION. At gaging station 7.8 river miles above the junction of the Rio Conchos, and 

Ojinaga, Chihuahua, and 285.7 river miles below the American Dam at El Paso, Tex.

DRAINAGE AREA. 35,000 square miles (United States and Mexico; from International Bounda

RECORDS AVAILABLE.--Chemical analyses 1935 to 1955.

REMARKS. Chemical analyses by the U. S. Department of Agriculture, Agricultural Researc

Calif. Records of discharge, electrical conductivity of individual water samples, an

October 1954 to September 1955 given in International Boundary and Water Commission W

vious years given in earlier bulletins.

Chemical analyses water year October 1954 to September 1

Month

October 1954 

November. . . 

December. . . 

January 1955 

February . . . 

March ......

June ....... 

July ........

September . . 

Total .....

Number 

of 

samples

5 

1

(c) 

1

(c)

(c) 

8 

12 

6

Runoff 

(acrefeet)

9,340 

.6 

0 

42.2 

0 

0

18.6 

0 

226 

2,240 

4,030 

6,830

..... 22,730

Silica 

(SiOJ 

ppm

7 

22

__

Equivalents per million

Calcium 

(Ca)

1 

5.60

4.39 

2 

3

--

Magnesium 

(Mg)

4.18 

3.50

0.47

.79 

98 

68

--

Sodium 

(Na)

2.98 

25.60

2.02

2.43 

2.30 

2.51

Potassium 

(K)

0.10 

.16

--

Bicarbonate 

(HC03)

2.85 

a2.70

bl.63

3.23 

2.40 

2.01

--

Sulfate

(scg

5.43

3.61

-_

Chloride 

(Cl)

1.80 

27.15

1.15

.90 

1.10 

.80

Fluoride 

(F)

--

0.03

.03

Nitrate 

(NOS)

--

0.02

.02

Bo

(

PP

0.2

.2

a Includes 0. 20 equivalent per million of carbonate (CO3 ). 

b Includes 0. 16 equivalent per million of carbonate (CO3 ). 

c No samples collected.
RIO GRANDE BASIN Continued 

RIO GRANDE AT LANGTRY, TEX.

LOCATION. At gaging station at Langtry, Tex., 24.1 river miles above the confluence with 

the American Dam at El Paso, Tex.

DRAINAGE AREA.--79,375 square miles (United States and Mexico; from International Boundary 

RECORDS AVAILABLE.--Chemical analyses, 1944 to 1955.

REMARKS. Chemical analyses by the U. S. Department of Agriculture, Agricultural Research S

Calif. Records of discharge, electrical conductivity of individual water samples, and t

October 1954 to September 1955 given in International Boundary and Water Commission Wat

vious years given in earlier bulletins.

Chemical analyses, water year October 1954 to September 19

Month

October 1954

November. .

December. .

January 1955

February . .

September .

Number 

of

samples

6

5

7

7

8

6

11

12

10

12

10

Total

Runoff

(acrefeet)

60,000

31,700

29,700

30,700

28.700

26,000

16,700

71,500

75,200

112,000

219,000

229,000

952,900

Silica

(SiOJ 

ppm

..

--

--

28

--

on

--

Equivalents per million

Calcium 

(Ca)

4.32

4.39

4.38

3.71

4.24

3. .64

2 

CO

4 09

3 34

4 95

4 32

4.20

Magnesium 

(Mg)

1.19

1.98

1.53

1.88

1.83

2 

no

1 99

QO

On

72

.74

Sodium 

(Na)

4.28

4.62

4.54

4.71

5.00

4.65

3.00

2 22

1.17

2.00

2 42

1.90

Potassium 

(K)

__

--

--

0.13

-.

-.

Bicarbonate 

(HC03)

a2.47

c2.93

d2.95

2.27

e2.90

2.55

f2.50

3

1 n

3 07

2 95

g2.70 

h2.47

Sulfate

5.33

5.80

5.47

5.71

6.03

c f-rj

3 59

3 

en

1 fin

4

CC

3

QQ

3.46

Chloride 

(Cl)

2.20

2.35

2.10

2.30

2.22

2 30

1.55

.50

45

.85

.90

Fluoride 

(F)

__

--

-_

0.07

..

03

..

Nitrate 

(N03)

(b)

0.01

.02

.03

.01

.01

.01

02

.04

04

.03

Boron

(B) 

ppm

0.21

.20

.20

.24

.17

no

.07

.14

.04

a Includes 0.32 equivalent per million of carbonate (CO3). 

b Less than 0. 01 equivalent per million, 

c Includes 0.22 equivalent per million at carbonate (CO3). 

d Includes 0. 20 equivalent per million of carbonate (CO3).

e Includes 0. 28 equivalent pe

f Includes 0.10 equivalent pe

g Includes 0. 20 equivalent pe

h Includes 0. 28 equivalent pe
RIO GRANDE BASIN--Continued

RIO GRANDE AT LAREDO, TEX.

LOCATION. At gaging station 0.9 miles downstream from the highway bridge between Larado, 

885.8 miles below the American Dam at El Paso, Tex. Prior to July 1955, samples obtain

0.5 miles above international highway bridge between Eagle Pass, Tex., and Piedras Neg

American Dam at El Paso, Tex.

DRAINAGE AREA. 135,976 square miles (United States and Mexico; from International Bounda

RECORDS AVAILABLE.--Chemical analyses: 1938 to June 1955 at Eagle Pass, July to Septembe

REMARKS.--Records of discharge, electrical conductivity of individual water samples, and 

1954 to September 1955 given in International Boundary and Water Commission Water Bull

years are given in earlier bulletins

Chemical analyses, water year October 1954 to September 19

Month

October 1954 

November . . 

December . . 

January 1955 

February. . .

May .......

September . .

lumber 

of 

samples

26 

25 

26 

22 

24 

27

26 

26 

25 

31 

3-1 

25

Runoff 

(acrefeet)

197,400 

90,980 

79,480 

73,550 

59,620 

50,350

30,480 

130,800 

103,800 

187,600 

327,900 

388,900

Silica 

(S102) 

ppm

14 

18

Equivalents per million

Calcium 

(Ca)

5. 

6. 

6. 

3.64 

6. 

6.

6. 

5. 

5. 

3.75 

4. 

4.

Magnesium 

(Mg)

27 

12 

17 

2.10 

86 

07

02

07 

02 

1.17 

48 

73

Sodium 

(Na)

3.58 

3.92 

4.25 

4.68 

5.86 

5.08

5.28 

3.24 

3.20 

2.82 

2.28 

2.52

Potassium 

(K)

0.08 

.13

Bicarbonate 

(HC03)

2.80 

a3.07 

b3.17 

c2. 23 

2.50 

2.67

2.45 

2.80 

c2. 81 

d2.90 

2.60 

e2. 80

Sulfate 

(S0<)

3.99 

2.45

Chloride 

(Cl)

2.75 

3.40 

3.60 

4.15 

5.10 

4.45

4.90 

2.50 

3.10 

2.45 

1.85 

1.80

Fluoride 

(F)

0.04 

.03

Nitrate 

(NO,)

0.08 

.07

Boron 

(B) 

ppm

0.19 

.16

a Includes 0.24 equivalent per million of carbonate (CO3). 

b Includes 0.30 equivalent per million of carbonate (CO3). 

c Includes 0.16 equivalent per million of carbonate (CO,).

d Includes 0.14 equivalent per million of 

e Includes 0. 32 equivalent per million of 
RIO GRANDE RIVER BASIN Continued

RIO GRANDE AT CHAPENO, TEX.

LOCATION. At Chapeno gaging station 2.5 river miles below Falcon Dam, 973.4 river mile

river miles above the confluence of the Rio Alamo from Mexico. Prior to July 1955, 

which is at international bridge between Roma, Tex. and Cd. Miguel A leman, (formerl

above the confluence of the Rio San Juan from Mexico, and 992.0 river miles below th

DRAINAGE AREA.--164,538 square miles in United States and Mexico (International Boundar

RECORDS AVAILABLE. Chemical analyses: At Roma, 1933 to January 1955 (discontinued), a

REMARKS. Chemical analyses are by the U. S. Department of Agriculture, Agricultural Re

Riverside, Calif. Records of discharge, electrical conductivity of individual water 

for water year October 1954 to September 1955 are available in International Boundar

24 and 25.

Chemical analyses, October 1954 to January 1955, July to Sep

Month

October 1954 

November . . 

December. 

January 1955 

February. . .

April ......

July .......

September. .

Number 

of 

samples

4 

3 

4 

4

12 

13

5

Runoff 

(acrefeet)

46,570 

68,590 

106,200 

d355,400

78,700 

195,000 

15,600

Silica 

(Si02) 

ppm

12

20

Equivalents per million

Calcium 

(Ca)

3.21 

3.39 

2.24 

3.52

3.44 

3.38 

3.22

Magnesium 

(Mg)

0.79 

.69 

.93 

.89

1.60 

1.38 

1.28

Sodium 

(Na)

2.07 

2.14 

2.00 

2.10

3.68 

3.58 

3.50

Potassium 

(K)

-

0.17

Bicarbonate 

(HCO,)

a2.75 

b2. 70 

cl.60 

2.80

2.50 

2.25 

2.27

Sulfate 

(SOJ

1.77 

1.98 

1.85 

2.13

3.19 

3.02 

3.14

Chloride 

(Cl)

1.65 

1.65 

1.90 

1.65

3.10 

3.10 

2.70

Fluoride 

(F)

0.03

.02

Nitrate 

(NO,)

0.03 

.03 

(d) 

.03

.02 

.02 

.04

a Includes 0.16 equivalent per million of carbonate (CO.,). 

b Includes 0. 20 equivalent per million of carbonate (CO^. 

e Includes 0.30 equivalent per million of carbonate (COJ. 

d Calculated.
RIO GRANDE BASIN Continued

PECOS RIVER BELOW ALAMOGORDO DAM, N. MEX.

LOCATION. At gaging station, 1,200 feet downstream from Alamogordo Dam, If miles downs

northeast of Guadalupe, De Baca County.

DRAINAGE AREA. 4,390 square miles, approximately (contributing area). 

RECORDS AVAILABLE. Chemical analyses: June 1937 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum observed, 2,120 micromhos Apr

Percent sodium: Maximum, 14 Dec. 18-20; minimum, 7 Mar. 1-10. 

EXTREMES, 1937-55.--Specific conductance: Maximum observed, 3,200 micromhos Jan

Percent sodium: Maximum, 19 July 1, 3-10, 1947; minimum, 1 Feb. 21-28, 1950. 

REMARKS. Values reported for dissolved solids are sums of determined constituents. Re

available in district office at Albuquerque, N. Mex. Records of discharge for water 

WSP 1392.

28; m

14, 1

Chemical analyses, water year October 1954 to Septembe

Date 

of 

collection

Oct. 1-10, 1954 . . 

Oct. 11-19.......

Oct. 20 .........

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

Nov. 1-10 .......

Nov. 11-20 ......

Nov. 21-30 ......

Dec. 1-10 .......

Dec. 11-17 ......

Dec. 18-20 ......

Dec. 21-31 ......

Jan. 1-10, 1955 .. 

Jan. 11-19.......

Jan. 20-31 .......

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

Feb. 11-20 ......

Feb. 21-28 ......

Mar. 1-10 .......

Runoff 

(acrefeet)

1,030 

262 

180 

1,480 

140 

66 

77

63 

28 

13 

50 

69 

61 

2,370

805 

33 

22 

478

Silica 

(Si02) 

ppm

9.0 

10 

23 

9.0 

12 

12 

11

12 

12 

14 

12 

20 

13 

11

8.6 

12 

14 

11

Equivalents per million

Calcium 

(Ca)

9.03 

7.24 

12.08 

7.53 

8.83 

9.23 

10.08

10.78 

11.18 

14.87 

12.48 

11.98 

11.78 

11.68

12.67 

14.07 

14.27 

14.17

Magnesium 

(Mg)

2.22 

1.48 

2.71 

1.56 

2.55 

2.30 

2.80

2.71 

3.04 

5.43 

3.54 

3.45 

3.29 

3.29

4.03 

5.10 

4.93 

4.52

Sodium 

(Na)

1.22 

.96 

1.91 

1.00 

1.30 

1.30 

1.57

1.70 

1.91 

3.39 

2.17 

2.22 

2.04 

1.96

2.26 

2.83 

2.83 

1.35

Potassium 

(K)

Bicarbonate 

(HC03)

1.90 

1.87 

2.16 

1.62 

1.75 

1.79 

1.90

1.95 

1.98 

2.35 

2.10 

2.16 

1.93 

1.88

1.97 

2.23 

2.31 

2.11

Sulfate 

(SO.J

9.83 

7.27 

12.72 

7.83 

9.76 

9.93 

11.05

11.87 

12.51 

18.55 

14.28 

13.68 

13.45 

13.51

15.16 

17.57 

17.28 

16.13

Chloride 

(Cl)

0.90 

.59 

1.61 

.71 

.96 

1.02 

1.24

1.27 

1.35 

2.48 

1.64 

1.61 

1.47 

1.44

1.75 

2. 17 

2.14 

1.89

Fluoride 

(F)

Nitrate 

(N0j)

0.03 

.03 

.05 

.02 

.02 

.03 

.02

.02 

.02 

.04 

.02 

.02 

.01 

.02

.00 

.00 

.01 

.01

Bo

(

pp
Mar. 11-20, 1955.

Apr. 1-10 .......

Apr. 11-20 ......

Apr. 21-30 ......

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

May 11-20 .......

May 21-31 .......

June 1-10 .......

June 11-20.......

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 ......

Total or weighted 

average .......

1,690 

1,320

1,520

1,460

1,570

1,570

1,610

1,900

1,930

13,250

17,310

5,750

11,630

4,540

1,940

2,000

2,090

10, 650

19, 100

20,380

130,500

9.3 

7.9

13

12

12

9.4

10

9.6

11

11

11

12

14

15

12

12

13

12

15

12

12

13.77 

13.97

13.97

14.37

14.87

14.97

15.47

15.47

16.37

16.27

16.27

16.62

17.02

14.97

12.77

11.68

9.88

9.53

10.88

9.73

13.22

3.54 

3.54

4.11

4.03

4.11

4.19

4.52

4.69

4.36

4.69

4.28

3.70

3.62

3.21

2.63

2.47

2.30

2.30

2.30

2.14

3.21

1.57 

1.57

2.44

2.44

2.87

2.52

2.65

2.74

2.61

2.65

2.61

2.65

2.70

2.65

2.13

1.87

1.61

1.61

1.91

1.70

2.17

1.97 

1.95

1.98

2.00

2.13

2.05

2.13

2.05

2.11

2.11

2.13

2.23

2.23

2.28

1.93

1.82

1.84

1.84

1.98

1.97

2.03

15.26 

15.36

16.24

16.59

17.55

17.65

18.24

18.45

18.74

18.82

18.65

18.95

19.28

17.01

14.39

13.12

11.03

10.56

12.20

10.72

15.03

1.64 

1.72

1.92

1.92

2.14

1.97

2.09

2.14

2.31

2.31

2.31

2.23

2.28

2.03

1.58

1.35

1.16

1.16

1.24

1.16

1.72

.01 

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.02

.01

.01

.02

.01

.01

0.01
RIO GRANDE BASIN--Continued

PECOS RIVER NEAR ARTESIA, N. MEX.

LOCATION. At gaging station at bridge on State Highway 83, 4.3 miles east of Artesia, Edd

Rio Penasco, and 17 miles north of McMillan Dam.

DRAINAGE AREA.--15,300 square miles, approximately (contributing area). 

RECORDS AVAILABLE. Chemical analyses: July 1937 to September 1955. 

Water temperatures: April 1949 to September 1955. 

Sediment records: January 1949 to September 1955. 

EXTREMES, 1954-55 Specific conductance: Maximum observed, 20,700 micromhos Sept. 10; mini

Percent sodium: Maximum, 69 Sept. 9; minimum, 20 June 22-30. 

EXTREMES 1937-55 Specific conductance: Maximum observed, 20,700 micromhos Sept. 10, 1955

Oct. 8, 1954.

Percent sodium: Maximum, 71 May 16, 1950; minimum, 12 Mar. 25-31, 1951.

REMARKS. Values reported for dissolved solids are sums of determined constituents. Recor

,a,^ i ?-25i e in dis trict office at Albuquerque, N. Mex. Records of discharge for water ye

Chemical analyses, water year October 1954 to September 19

Date 

of 

collection

Oct. 1-5, 1954 ... 

Oct. 6...........

Oct. 7-8.........

Oct. 9-11........

Oct. 12-17.......

Oct. 18-31.......

Nov. 11-20 ......

Nov. 21-30 ......

TVan 91 -11

Jan. 1-10, 1955 .. 

Jan. 11-20.. ......

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

Feb. 11-20. ......

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

Runoff 

(acrefeet)

349 

184 

58,080 

73,850 

10,620 

9,620 

4,910 

4,010 

3,540

3,160 

2,800 

2,700 

2,390 

2,400 

2,410

2,280 

2,220 

1.490

Silica 

(Si02) 

ppm

26 

14 

13 

42 

20 

43 

43 

35 

36

22 

20 

25 

20 

21 

20

16 

15 

16

Equivalents per million

Calcium 

(Ca)

31.79 

19.41 

4.24 

18.41 

26.55 

30.89 

29.89 

30.29 

31.09

30.89 

29.54 

30.49 

29.94 

29.14 

30.29

30.69 

30.29 

31.49

Magnesium 

(Mg)

25.58 

14.31 

1.15 

4.11 

11.51 

18.59 

19.16 

20.31 

20.89

22.12 

22.12 

22.45 

22.45 

23.03 

23.44

20.56 

19.57 

21.55

Sodium 

(Na)

72.62 

41.05 

2.39 

6.35 

25.31 

47.83 

50.01 

54.79 

56.09

56.53 

57.40 

60.88 

60.88 

60.01 

61.75

52.18 

50.01 

57.40

Potassium 

(K)

Bicarbonate 

(HC03)

2.46 

2.44 

2.23 

1.98 

2.95 

2.98 

3.38 

3.44 

3.57

3.69 

3.47 

3.56 

3.36 

3.13 

3.34

3.36 

3.26 

3.21

Sulfate 

(SOJ

50.17 

27.27 

3.46 

20.59 

32.89 

44.55 

44.76 

45.18 

45.39

46.01 

43.93 

45.18 

44.76 

44.97 

46.01

44.14 

43.10 

45.59

Chloride 

(Cl)

77.56 

43.43 

2.09 

5.98 

26.51 

49.36 

50.77 

56.97 

58.66

60.07 

60.35 

63.74 

63.46 

61.48 

63.74

56.41 53.59' 

61.48

Fluoride 

(F)

Nitrate 

(NO,)

0.34 

.08 

.06 

.08 

.05 

.03 

.06

.04

Boron 

(B) 

ppm
Mar. 1-10, 1955..

Mar. 21-31 ......

Apr. 1-10. .......

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

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

May 11, 19-20. . . . 

May 12-18 .......

May 21-31 .......

June 1-10. .......

June 20-21. ......

July 1-10 ........

July 11-19 .......

July 20-29, 31. ... 

July 30 ..........

Aug. 1-4 ........

Aug. 5-10 .......

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

Sept. 9 ..........

Sept. 10-11 ......

Sept. 12-20 ......

Sept. 21-30 ......

Total or weighted 

average .......

1,660 

1,380

1,450

1,110

1,080

1,020

1,320

412 

4,000

1,080

781

589

2,250

11,330

11,050

2,920

22,430 

2,480

2,060

1,260

1,340

295

109

17

1,050

11,290

48, 360

321,100

18 

16

20

19

21

26

97

25 

18

20

23

9<»

21

18

18

21

18 

16

20

24

91

24

26

24

9n

19

17

24

30.09

S1 10

32.39

oo on

33.93

34.73

28.14 

18.81

30.09

35.53

36.68

25.55

22.80

21.81

9<» HH

19.81 

7.14

16.82

24.55

97 1 ^

30.89

01 on

41.87

91 1 f^

1 1; 47

16.27

18.31

25.25 

26.89

26.48

26.32

29.77

28.78

27.88

18.01 9

t»4

21.87

25.74

27.63

8.96

6.83

5.43

8.55

3.87 

1.40

4.69

10.53

13.65

18.91

20.64

29.44

8.22 4 9ft

4.28

7.32

60.88 

65.23

66.10

67.83

77.40

72.62

65.66

43.92 

18.00

53.49

72.18

82.18

14.44

6.78

7.65

91 H9

6.13 2

00

12.96

28.66

38.79

63.92

68.70

161.76

1 Q 7Q,

5.78

5.39

15.70

2.98

9 77

2.90

2.87

3.23

3.02 3

1 1

2.82 2 1 ^ 2 fiQ

2.82

2 

ft ft

2.65

9 91 2 1 n

1.98

2.16 2

OC

9 9n

2.20

2.00

9 9<J

9 in

1.70

2.54

9 n<4

2.03

2.33

47.47 

49.76

50.59

M 91

54.75

55.17

52.26

41.43 

26.02

46.22

54.75

56.84

33.10

27.06

26.02

°.n 1 Q

22.48 6

QC

1Q °.fi

32.89

38.52

47.26

49 76

63.29

09 Aft

10 1 ^

19.57

23.11

67.12 

70.51

69.66

7O. 9°.

81.51

79.25

79 4ft

45.69 

17.63

58.66

76.43

85.46

12.83

6.60

7.28

22.14

5.42 

2.68

13.11

29.33

Af\ AC

65.15

CQ QA

17.06

4.46

15.85

.42 

.47

.08

.05

.06

.05

.09 

.07

.09

.06

.07

no

.05

.07
RIO GRANDE BASIN Continued

PECOS RIVER BELOW RED BLUFF DAM NEAR ORLA, TE

LOCATION.--Just below dam, 3 miles upstream from Salt (Screwbean) Draw, 5 miles northwest 

gaging station near Orla. 

DRAINAGE AREA.--20,720 square miles, approximately (contributing area) 

RECORDS AVAILABLE.--Chemical analyses: July 1937 to September 1955.

Water temperatures: March 1953 to September 1955.

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 17,400 micromhos Oct. 5; minimum 

Percent sodium: Maximum, 78 Oct. 4-8; minimum, 57 July 1-31, Aug. 1-31. 

EXTREMES, 1937-55.--Specific conductance: Maximum daily, 24,200 micromhos Sept; 28, 30, 

Percent sodium: Maximum, 78 Oct. 4-8, 1954; minimum, 9 Aug. 17-19, 1944. 

REMARKS Values reported for dissolved solids are sums of determined constituents. Recor

 iri dlstrict office at Austin, Tex. Records of discharge for gaging station n

given in WSP 1392. No appreciable inflow between sampling point and gaging statio

Chemical analyses, water year October 1954 to September 1

Date 

of 

collection

Oct. 1-3, 1954 

Oct. 4-8 .......

Nov. 1-30 ......

Jan. 1-31,1955.. 

Feb. 1-28 ......

Mar. 1-31......

May 1-31.......

July 1-31 ......

Sept. 1-12......

Sept. 13-30. ....

Total or weighted 

average .....

Runoff 

(acrefeet)

717 

149 

144 

1,720 

1,880 

1,630

17,730 

23,730 

12,910 

22,440 

32,450 

31,160

7,620 

1,540

157,100

Silica 

(Si02) 

ppm

14 

13 

14 

13 

12 

12

10 

10 

10 

13 

16 

14

18 

17

13

Equivalents per million

Calcium 

(Ca)

17.86 

23.30 

17.66 

17.56 

18.46 

18.66

15.77 

13.37 

14.87 

15.12 

15.27 

16.97

20.26 

24.95

15.82

Magnesium 

(Mg)

10.77 

16.94 

8.88 

9.37 

10.28 

10.20

7.32 

5.67 

6.17 

6.58 

6.50 

7.48

7.73 

14.31

6.91

Sodium 

(Na)

Potassium 

(K)

78.06 

140.18 

49.04 

44.66 

45.95 

41.40

33.95 

25.77 

31.39 

31.41 

28.54 

32.69

38.65 

86.33

32.32

Bicarbonate 

(HCO,)

1.97 

1.57 

2.43 

2.47 

2.49 

2.52

2.36 

2.20 

2.26 

2.18 

2.15 

1.98

1.93 

2.26

2.16

Sulfate 

(S04)

25.19 

37.27 

23.73 

23.94 

25.61 

25.40

20.78 

17.20 

19.13 

19.30 

19.36 

21.86

25.19 

34.77

20.36

Chloride 

(Cl)

79.53 

141.58 

49.36 

45.13 

46.54 

42.30

33.84 

25.38 

31.02 

31.59 

28.77 

33.28

39.48 

88.56

32.43

Fluoride 

(F)

Nitrate 

(NOj)

0.06 

.05 

.05 

.04

.06 

.03 

.02 

.04 

.03 

.02

.04

Bor

(B

ppm
RIO GRANDE RIVER BASIN--Continued

PECOS RIVER NEAR SHUMLA, TEX.

LOCATION.--At gaging station located 13.0 river miles upstream from the Pecos High Bridge, a

the Rio Grande. The river enters the Rio Grande, 638.2 river miles below the American Dam 

samples obtained at gaging station near mouth, 4.7 river miles downstream from Pecos High 

with the Rio Grande.

DRAINAGE AREA.--35,162 square miles (International Boundary and Water Commission Water Bulle

RECORDS AVAILABLE.--Chemical analyses, October 1954 to September 1955. Chemical analyses fo

are available for a station near the mouth and for the period Feb. 1935 through June 1954 

the Pecos High Bridge.

REMARKS.--Chemical analyses are by the U. S. Department of Agriculture, Agricultural Researc

Riverside, Calif. Records of discharge, electrical conductivity of individual water samp

water year October 1954 to September 1955 are available in International Boundary and Wat

24 and 25. Data of previous years are given in earlier bulletins for a station near the 

stream at the Pecos High Bridge.

Chemical analyses, water year October 1954 to September 195

Month

October 1954 

November. . 

December. . 

January 195E 

February. . .

April ......

May .......

July .......

September .

Number 

of 

samples

4 

4 

5 

4 

4 

5

4 

4 

6

6 

8 

5

Runoff 

(acrefeet)

12,400 

10,300 

11,500

9,570 

15,000 

19,700 

29,800 

26,500 

29,500

Silica 

(Si02) 

ppm

11 

12

Equivalents per million

Calcium 

(Ca)

7.85 

6.85 

6.32 

8.35 

8.82 

8.90

7.85 

7.82 

6.44 

3.99 

5.25 

5.30

Magnesium 

(Mg)

5.59 

5.30 

4.11 

6.04 

6.52 

7.01

6.43 

4.92 

5.19 

1.78 

3.31 

3.31

Sodium 

(Na)

16.90 

13.90 

12,60 

16.86 

19.66 

21.60

21.60 

18.00 

14.97 

5.29 

9.51 

9.15

Potassium 

(K)

0.22 

.11

Bicarbonate 

(HCOS)

2.65 

a2.45 

b2. 31 

aS.OO 

b2.90 

C2.60

1.95 

2. 10 

2.33 

2.30 

2.47 

d2.83

Sulfate 

(SOJ

9.60 

8.42 

7.33 

9.25 

10.52 

11.32

10.76 

9.25 

7.82 

2.71 

5.09 

4.51

Chloride 

(Cl)

18.40 

15.25 

13.60 

19.18 

21.84 

23.85

23.30 

19.65 

16.65 

5.90 

10.75 

10.40

Fluoride 

(F)

0.05 

.03

Nitrate 

(NO,,)

0.04 

.02 

.02 

.04 

.05 

.03

.02 

.02 

.02 

.07 

.07 

.07

Boron 

(B) 

ppm

0.23 

.18 

.16 

.19 

.21 

.26

.25 

.21 

.18 

.17 

.21 

.19

a Includes 0.28 equivalent per million of carbonate (COj). 

b Includes 0.24 equivalent per million of carbonate (COj). 

c Includes 0.10 equivalent per million of carbonate (COS). 

d Includes 0.20 equivalent per million of carbonate (COS).
PART 9. COLORADO RIVER BASIN

COLORADO RIVER MAIN STEM 

COLORADO RIVER NEAR GLENWOOD SPRINGS, COLO.

LOCATION. At Shoshone power plant, 6 miles upstream from gaging station at Glenwood Spri

upstream from Roaring Fork.

DRAINAGE AREA. 4,560 square miles approximately (above gaging station). 

RECORDS AVAILABLE. Chemical analyses: October 1941 to September 1955.

Water temperatures: May 1949 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 1,220 micromhos Dec. 18; minimu

Percent sodium: Maximum, 53 Dec. 11-20; minimum, 13 Aug. 6. 

EXTREMES, 1941-55.--Specific conductance: Maximum daily, 2,260 micromhos Aug. 10, 1947; 

Percent sodium: Maximum, 53 Dec. 11-20, 1954; minimum, 13 June 11-20, 1949, June 1-10, 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of s

in district office at Salt Lake City, Utah. Records of discharge for water year Octob

No appreciable inflow between Shoshone power plant and gaging station except during pe

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954... 

Oct. 11-20.......

f\nt 91 31

Nov. 11-20.......

Nov. 21-29.......

Nov. 30, Dec. 1-10. 

Dec. 11-20.......

Dec 21-31

Jan. 1-10, 1955... 

Jan. 11-20.......

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

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

Feb. 11-20.......

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

Mar. 1-10........

Mar. 11-20. ......

Mar. 21-31. ......

Runoff 

(acrefeet)

16,630 

19,190 

21,770 

18,870 

15,170 

13, 370 

14,760

12,810 

13,090 

12,200 

12,150 

13,390

12,650 

12,310 

9,300 

12,570 

14, 440 

16.460

Silica 

(Si02) 

ppm

13 

16

Equivalents per million

Calcium 

(Ca)

4.14 

3.59 

3.49 

3.59 

4.04 

3.94 

4.39

4.49 

4.29 

4.04 

3.59 

3.69

3.79 

3.79 

3.79 

3.74 

3.74 

3.84

Magnesium 

(Mg)

1.32 

1.32 

1.07 

.99 

1.07 

1.07 

1.15

1.23 

1.23 

1.15 

1.32 

1.07

1.07 

1.07 

1.15 

.99 

.99 

.99

Sodium 

(Na)

3.17 

3.13 

2.87 

2.48 

2.87 

2.87 

5.65

6.44 

4.74 

4.61 

4.26 

4.39

4.65 

4.65 

4.74 

4.65 

4.09 

4.17

Potassium 

(K)

0.08

.07

-

Bicarbonate 

(HCOj)

2.52

2.51

2.41 

2.34 

2.34

Sulfate 

(SOJ

2.69

2.58

--

Chloride 

(Cl)

2.76

4.12

--

Fluoride 

(F)

0.02

.01

--

Nitrate 

(NO,)

0.01

.01

-

Boro

(B) 

ppm

0.0

.0

-
Apr. 1-10, 1955. 

Apr. 11-20......

Apr. 21-30......

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

May 11-20. ......

May 21-31. ......

June 11-20......

June 21 -30 ......

July 1-10. .......

July 11-20. ......

July 21-31. ......

Aug. 1-5, 7-10 .. 

Aug. 6..........

Aug. 11-20......

Aug. 21-31......

Sept. 1-10 ......

Sept. 21-30......

Total or weighted 

average ......

20, 380 

32,210

37,250

53,710

65,320

86,860

74, 500

79,990

62, 220

35,640

27,230

36, 730

26, 220 

3,970

27,310

28, 320

21,340

22, 080

24, 020

1,026,000

12

__

10

--

--

..

3.54 

2.50

2.45

2.00

1.85

1.85

2.05

2.10

2.20

2.69

3.09

3.84

3.74 

5.84

3.94

3.74

3 

A A

3.14

3.04

2.89

.90 

.99

.57

.48

.48

.50

.62

.56

.66

1.40

1.23

.81

1.56

4 Oft

.82

.82

on

.58

.76

0.82

2.87 

1.96

1.52

1.09

1.00

.87

1.00

.96

1.26

2.04

2.48

2.35

2.30

1 S9

2.35

2.35

2.65

2.57

2.22

2.18

.08

.05

--

2.11 

1.97

1.59

1.86

1.61

1.57

1.69

1.67

1.69

1 Q7

2.23

2.23

2.26 

21 1

2.39

2.20

2.20 2 ni

2.00

1.92

2.27

--_

1.69

2.45

--

_.

.01

.01

--

.03__

.01

--

--
COLORADO RIVER MAIN STEM Continued

COLORADO RIVER NEAR CISCO, UTAH

LOCATION. At gaging station, 1 mile downstream from Dolores River, 11 miles south of Ci

Green River, and 235 miles upstream from San Juan River. 

DRAINAGE AREA.--24,100 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: August 1928 to September 1955. 

Water temperatures: May 1949 to September 1955. 

Sediment records: May 1930 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 2,500 micromhos Dec. 27; minim

Percent sodium: Maximum, 57 Mar. 2, 4; minimum, 25 May 11-20.

EXTREMES, 1941-52, 1953-55.--Specific conductance: Maximum daily, 4,100 micromhos Sept, 

June 15, 1952.

Percent sodium: Maximum, 57 Mar. 2, 4, 1955; minimum, 19 May 1-10, 1952.

REMARKS. Values reported for dissolved solids are sums of determined constituents. Rec

available in district office at Salt Lake City, Utah. Records of discharge for water 

WSP 1393.

Chemical analyses, water year October 1954 to Septembe

Date 

of 

collection

Oct. 1-10, 1954... 

Oct. 11-20.......

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

Nov. 1,3,5,8,10, 

12, 15..........

Nov. 17,19,22,24, 

29. .............

Dec. 1,3,6,8,10, 

13, 15..........

Dec. 17,20,22,27, 

29, 31....... ...

Jan. 5,7,14,17, 

19, 1955........

Jan. 21,24,26, 28, 

31 .............

Runoff 

(acrefeet)

71,460 

77,890 

65,950

38, 540 

25,550

34, 490 

24, 260 

23, 640 

20.770

Silica 

(Si02) 

ppm

15 

15 

12

11 

15

15 

14 

19 

15

Equivalents per million

Calcium 

(Ca)

7.88 

7.39 

6.69

6.69 

6.49

6.49 

7.09 

6.14 

5.99

Magnesium 

(Mg)

4.69 

4.03 

4.44

4.44 

4.61

4.77 

4.93 

4.44 

4.52

Sodium 

(Na)

7.09 

6.31 

7.09

8.91 

8.96

10.09 

11.22 

11.13 

11.91

Potassium 

(K)

0.16 

.15 

.15

.20 

.18

.22 

.24 

.21 

.24

Bicarbonate 

(HC03)

3.62 

3.52 

3.41

3.39 

2.82

3.15 

3.67 

3.02 

2.97

Sulfate 

(SOJ

12.45 

11.30 

10.87

11.08 

11.55

11.66 

12.01 

10.43 

10.51

Chloride 

(Cl)

3.67 

2.96 

3.92

5.75 

5.75

6.71 

7.81 

7.98 

8.94

Fluoride 

(F)

Nitrate 

(NO,)

0.13 

.10 

.16

.19 

.18

.16 

.16 

.16 

.11

B

p
Feb. 2, 4, 7, 9, 

11, 14, 1955... 

Feb. 16, 18, 21, 

23, 25 ........

Mar. 2, 4 ......

Mar. 9, 11, 14.. 

Mar. 16,18,21,23, 

28, 31. ........

Mar . 25 ........

Apr. 2, 6-11, 

13, 15 ........

Apr. 18,20,26-30 

May 1-10 .......

May 11-20......

May 21-31 ......

June 11-20......

June 21-30. .....

July 1-10.......

July 11-20 ......

July 21-26, 28-31 

July 27 .........

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

Aug. 11-20......

Aug. 21-31......

Sept. 1-10......

Sept. 11-20.....

Sept. 21-30.....

Total or weighted 

average. .....

25,370 

21,640

13,390

27,570 

31,700

4,600

62, 040

111,900 

221, 600

270, 600

259, 600

205, 200

275,700

208,200

100, 400

50, 160

58, 080 

5,730

74,700

58,330

51,950

33,400

30, 570

43,780

a2, 629, 000

15 

10

7.4

8.8 

16

12

16

12 

13

12

11

10

11

9 0

11

10

16 

19

on

17

17

1 1

11

16

13

5.69 

5.79

5.09

6.24 

5.69

3.09

4 7Q

3.29 

2.89

2.89

2 QQ

1 1Q

2.89

3

f\A

4 34

5.89

7.19

1 1 99

8.13

8.08

8.83

8.88

10.18

9.53

4.64

4.28 

4.03

3.12

2.80 

3.78

1.48

2 Qfi

1.64 

1.40

1 19

1 4R

1 71

1.32

1.56

2.38

3.62

4.61 

6.66

4.03

5.10

6.00

7 94

6.00

2.63

11.18 

10.70

11.18

5.65

7 Qfi

5.96

2.52 

1.87

1 41

1.87

2.39

1.61

2.26

3

C7

5

AA

7.09 

8.91

5

QQ

6.44

7.35

8.44

9 QR

9.00

4.13

.24

94

.33

.18 

19

.15

.10 

.08

.07

.07

.08

.06

.06

AQ

1 9

.18 

.28

1 Q

1 Q

1Q

1 Q

19

.17

0.11

2.80 

3.05

2.61

2.65 

3.28

2.28

2.90

2.56 

2.47

2 11

9 9n

2.15

2 

in

2.06

2.38

2.65

3.00

3 91

3

OA

3.36

3 ^1

3

r\A

3 ft9

3.49

2.61

10.10 

9.85

7.39

8.66 

8.95

3.00

7.02

3.27 

2.44

2.35

3 ft9

3 71

2.77

3.56

5.58

8.66

11.83 

21.86

11.62

1 9 99

14.47

15.78

19.09

16.16

6.27

8.43

7 SQ

9.56

3.16 

5.36

1 Q7

3.86

1.58 

1.24

on

1 91

1.58

on

1 97

2.28

4.17

1 41

2 90

3 11

3.64

4.40

5.22

4.65

2.48

.16 

.14

.19

.13 

.16

.08

.12

.07 

.06

.05

.05

.05

.08

.07

.07

.10

.21 

.09

.10

.15

.21

94

.26

.19

0.10

.13

.10

1 9

.09

.06

.19

.00

.00

.10

.13

.11

.20

a Represents 81 percent of runoff for water year October 1954 to September 1955.
COLORADO RIVER MAIN STEM--Continued 

COLORADO RIVER AT LEES FERRY, ARIZ.

LOCATION. At gaging station at head of Marble Gorge at Lees Ferry, Coconino County, just 

from Utah-Arizona State line, 61.5 miles upstream from Little Colorado River, and 79 mi

DRAINAGE AREA. 107,900 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: January to July 1926, October 1926 to June 1927, Oc

October 1945, October 1947 to September 1955. 

Water temperatures: July 1949 to September 1955.

Sediment records: October 1928 to December 1933, November 1942 to September 1944, Octob

EXTREMES, 1954-55. Specific conductance: Maximum observed, 2,020 micromhos Sept. 23; mini

Percent sodium: Maximum, 42 Dec. 11-31, Feb. 1-10, 21-28, Apr. 1-10; minimum, 26 May 21-

EXTREMES, 1928-30, 1942-45, 1947-55. Specific conductance (1942-45, 1947-55): Maximum obs

observed, 318 micromhos June 9, 1948.

Percent sodium (1942-44, 1947-55): Maximum, 46, Mar. 2, 4, 7, 10, 1944; minimum, 21 June 

REMARKS. Values reported for dissolved solids are sums of determined constituents. Recor

available in district office at Albuquerque. N. Mex. Records of discharge for water ye

WSP 1393.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954 ... 

Oct. 11-20........

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

Nov. 1-10. ........

Nov. 11-20. .......

Nov. 21-30 .......

Dec. 1-10. ........

Dec. 11-20 .......

Dec. 21-31........

Jan. 1-10, 1955 . .. 

Jan. 11-20........

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

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

Feb. 11-20 .......

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

Runoff 

(acrefeet)

187,900 

183, 000 

141, 400 

120, 100 

118,000 

110, 700

105, 500 

94, 330 

78, 660 

80, 270 

85, 490 

78, 290

87, 390 

82, 020 

73. 860

Silica 

(Si02) 

ppm

15 

15 

13 

13 

12 

12

12 

12 

14 

18 

16 

18

19 

17 

18

Equivalents per million

Calcium 

(Ca)

8.33 

7.93 

6.54 

6.14 

6.14 

6.54

5.94 

6.44 

6.84 

6.69 

6.19 

6.14

5.94 

5.94 

5.84

Magnesium 

(Mg)

3.29 

2.96 

3.21 

3.45 

3.45 

3.78

3.62 

3.78 

4.28 

5.02 

4.77 

4.77

3.95 

3.62 

3.21

Sodium 

(Na)

6.13 

5.70 

5.61 

6.17 

6.44 

' 6.91

6.87 

7.48 

8.31 

8.35 

7.31 

7.65

7.22 

6.70 

6.74

Potassium 

(K)

0.22 

.20 

.16 

.16 

.16 

.16

.15 

.18 

.18 

.18 

.18 

. 17

.16 

.16 

.15

Bicarbonate 

(HCOS)

4.36 

4.29 

3.77 

3.57 

3.70 

3.83

3.82 

3.88 

4.29 

4.56 

4.26 

4.20

3.82 

3.98 

3.62

Sulfate 

(SOJ

11.08 

10.28 

8.95 

9.22 

9.18 

10.18

9.24 

10.03 

10.74 

10.74 

9.60 

9.64

9.06 

8.37 

8.18

Chloride 

(Cl)

2.26 

2.14 

2.43 

2.79 

3.13 

3.33

3.55 

3.98 

4.48 

4.57 

4.06 

4.40

4.20 

3.92 

4.03

Fluoride 

(F)

0.02 

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02

Nitrate 

(NO,)

0.08 

.10 

.11 

.09 

.08 

.09

.08 

.10 

.14 

.12 

.12 

.11

.10 

.10 

.11

Boro

(B) 

ppm

0.18 

.16 

.16 

.17 

.16 

.21

.22 

.20 

.22 

.08 

.07 

.09

.20 

.22 

.19
Mar. 1-10, 1955.. 

Mar. 11-20 ......

Mar. 21-31 ......

Apr. 1-10 .......

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 21-30 .......

July 31 ..........

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

Aug. 11-20 ......

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

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

Sept. 11-20 ......

Sept. 21-30 ......

Total or weighted 

average .......

132, 800 

272, 000

175, 000

137, 900

172,800

306, 800

364, 800

592,900

612, 100

468, 900

608, 500

509, 000

290, 200

151,600

112,900

15,990

163, 900

191, 700

154, 000

108, 700

57,380

63,610

7,290,000

17 

15

15

15

15

17

15

16

17

16

14

15

14

15

13

18

17

19

18

17

16

11

15

6.44 

7.24

5.44

5.54

5.44

4.44

3.89

3.29

3.09

2.99

2.99

3.09

2.99

3.64

4.89

8.58

8.03

7.73

7.14

6.84

7.04

7.39

4.64

3.29 

3.04

2.71

3.21

2.96

2.22

1.64

1.56

1.32

1.23

1.32

1.32

1.48

1.73

2.30

4.28

2.22

2.80

3.37

3.70

4.36

5.51

2.38

6.44 

5.57

5.35

6.35

5.65

3.74

2.48

1.87

1.61

1.65

1.61

1.61

2.04

2.91

4.17

e

5.83

5.83

5.74

6.26

6.96

8.35

3.96

. 17 

.17

.15

.16

.15

.13

.14

.11

.08

.09

.08

.09

.10

.11

.16

>. 54

.20

.21

.20

.20

.20

.21

0. 14

4.03 

4.34

3.75

3.75

3.98

3.72

3.49

3.29

3.03

2.75

2.85

2.72

2.56

2.74

3.21

3.93

3.97

3.97

4.10

3.93

3.44

3.28

3.46

8.62 

8.95

7.52

8.27

7.27

4.95

3.39

2.73

2.25

2.35

2.35

2.60

2.94

4.00

6.14

12.93

9.74

10.22

10.20

10.70

12.37

14.59

5.89

3.67 

2.43

2.17

3.05

2.71

1.61

1.18

.73

.62

.71

.62

.71

.96

1.44

1.97

2.48

2.45

2.00

2.03

2.37

2.93

3.89

1.80

.02 

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.03

.03

.03

.03

.03

.03

.03

0.02

.11 

.12

.08

.08

.08

.10

.07

.07

.07

.05

.05

.05

.04

.05

.06

.03

.06

.04

.06

.12

.10

.10

0.07

.1

.1

.2

.2

.2

.1

.1

. 

.0

.0

.0

.0

.0

.1

.1

.2

.3

.1

.1

.1

.1

0.1
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 A

Grand Canyon, Coconino County, 26 miles downstream from Little Colorado River, and 267 

DRAINAGE AREA. 137,800 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: August 1925 to November 1942, September 1943 to S

Water temperatures: October 1936 to October 1942, September 1943 to September 1955. 

Sediment records: October 1925 to November 1942, September 1943 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum observed, 2,090 micromhos Jan. 1; minim

Percent sodium: Maximum, 48 Feb. 1-10; minimum, 28 June 1-10, July 23. 

EXTREMES, 1937-42, 1943-55. Specific conductance: Maximum observed, 2,900 micromhos Sept

June 15, 1942.

Percent Sodium (1941-42, 1943-55): Maximum, 48 Sept. 11-20, 1942; Apr. 1-10, 1954; Feb

REMARKS. Values reported for dissolved solids are sums of determined constituents. Recor

available in district office at Albuquerque, N. Mex. Records of discharge for water y

WSP 1393.

Chemical analyses, water year October 1954 to Septemb

Date 

of 

collection

Oct. 1-10, 1954 . . . 

Oct. 11-20........

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

Nov. 1-10. ........

Nov. 11-20 .......

Nov. 21-30 .......

Dec. 1-10 ........

Dec. 11-20... .....

Dec. 21-31 .......

Jan. 1-10, 1955 ... 

Jan. 11-20........

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

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

Feb. 11-20 .......

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

Mar. 1-10 ........

Runoff 

(acrefeet)

180, 800 

198, 300 

147, 100 

123,000 

121,500 

115,000

109, 600 

101,800 

84, 420 

80,510 

95,030 

85,470

93,460 

91,280 

83, 940 

131,300

Silica 

(Si02) 

ppm

17 

16 

13 

12 

11 

13

14 

14 

15 

18 

17 

18

17 

16 

16 

18

Equivalents per million

Calcium 

(Ca)

9.03 

8.03 

7.14 

6.14 

6.44 

6.64

6.04 

6.34 

6.64 

6.69 

6.24 

6.04

5.69 

5.69 

5.64 

6.04

Magnesium 

(Mg)

3.12 

3.12 

3.04 

3.45 

3.29 

3.95

3.95 

4.11 

4.44 

5.18 

4.77 

4.52

3.95 

3.95 

3.70 

3.78

Sodium 

(Na)

7.17 

6.17 

6.48 

7.04 

7.39 

8.22

8.26 

8.65 

9.48 

10.09 

9.04 

9.04

8.96 

8.31 

8.04 

7.44

Potassium 

(K)

0.25 

.21 

.20 

.18 

.20 

.19

.18 

.19 

.19 

.22 

.20 

.19

.18 

.21 

.21 

.20

Bicarbonate 

(HCOJ

4.47 

4.42 

3.95 

3.82 

3.93 

4.15

4.21 

4.31 

4.54 

4.77 

4.59 

4.56

4.03 

4.34 

4.20 

4.15

Sulfate 

(SOJ

11.62 

9.83 

9.16 

8.76 

8.91 

10.01

9.16 

9.49 

10.03 

10.43 

9.54 

8.93

8.83 

7.89 

7.70 

8.18

Chloride 

(Cl)

3.24 

2.93 

3.50 

3.98 

4.29 

4.63

4.79 

5.42 

5.89 

6.54 

5.70 

5.92

5.98 

5.58 

5.27 

4.94

Fluoride 

(F)

0.02 

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02

Nitrate 

(NO,)

0.04 

.06 

.13 

.08 

.08 

.13

.11 

.12 

.12 

.12 

.11 

.11

.14 

.12 

.12 

.13

Bor

(B) 

ppm

0.1

.1

.1

.1

.1

.2

.2

.2

.2

.0

.0

.0

.2

.1

.1

.3
Mar. 11-20, 1955.. 

Mar. 21-31 .......

Apr. 1-10. ........

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 21-22, 24-31.. 

July 23 ...........

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

Aug. 11-20 .......

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

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

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

Sept. 21-30 .......

Total or weighted 

average ........

266, 600 

188, 000

147, 900

172,400

300, 900

359, 000

559, 100

597, 200

470, 700

617,900

507, 000

305, 300

167, 800

132,900 

12, 180

208, 500

251,700

207,400

127, 600

68, 170

68, 790

7,580,000

16 

15

15

16

16

17

15

15

15

19

17

15

14

17 

14

19

19

19

19

18

13

16

6.84 

5.74

5.34

5.14

4.44

3.69

3.34

3.19

3.39

3.24

3.14

3.29

3.64

5.59 

3.39

7.14

7.24

6.34

6.99

6.49

7.04

4.94

3.62 

2.96

3.62

3.12

2.47

1.97

1.48

1.32

1.48

1.23

1.32

1.48

1.97

2.71 

1.97

2.63

2.22

2.22

3.37

4.03

4.61

2.47

6.13 

5.96

6.78

6.91

4.78

3.13

2.09

1.91

1.91

2.30

2.04

2.48

3.57

5.83 

2

6.87

6.87

7.17

7.39

8.74

9.57

4.83

.20 

. 16

.17

.17

.16

. 16

.12

.10

.09

.11

. 12

19

.21 

08

.21

.20

.21

.25

9>i

.25

0. 16

4.26 

4.21

3.98

4.10

4.00

3.77

3.57

3.18

3.20

3.16 2 Q9

2.85

2.95

3.83 

2.88

4.24

4.23

4.29

4.42

9 Q9

3 70 *

3.74

8.85 

7.31

7.79

7.52

5.33

3.54

2.50

2.25

2.35

2.46 2

AK

2.85

3.85

7.06

9 9>i

9.10

9.41

8.83

9.72

10.35

11 91

5.85

3.44 

3.02

4.00

3.84

2.37

1.64

1.04

.96

i 19

1.07

1 19

1.52 2 97

3.33 

1.27

3.22

2.59

2.99

3.67

5.10

6.01

2.62

.02 

.02

.02

.02

.03

.03

.00

.03

.02

.02

n9

.02

no

.02

O9

O9

.03

.03

n9

O9

0.02

.11 

.11

.08

.10

.11

.09

.05

.06

.04

.05

.04

.04

.05

.07 

f14

.01

.00

.09

.15

.16

.11

0.07

.2

.3

.3

.1

.1

.1

.1

.0

.1

.1

.1

.1

9

.2

.3

.3

.2

.2

.2

.2

0.1
COLORADO RIVER MAIN STEM--Continued 

COLORADO RIVER BELOW HOOVER DAM, ARIZ.-NEV.

LOCATION. At Hoover Dam, state line between Mohave County, Ariz., and Clark County, Nev., 

DRAINAGE AREA.--167,800 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: October 1939 to September 1955.

Water temperatures: October 1941 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 1,580 micromhos June 20; minimum 

Percent sodium: Maximum, 40 during several periods February to July; minimum, 36 Oct. 11

EXTREMES, 1939-55. Specific conductance: Maximum daily, 1,580 micromhos June 20, 1955; mi

Percent sodium (1941-44, 1950-55): Maximum, 41 during several periods in 1951 and 1952; 

19-20, 1944.

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of spe

district office at Salt Lake City, Utah. Records of discharge for water year October 19

Chemical analyses, water year October 1954 to September 195

Date 

of 

collection

Oct. 1-10, 1954 .. 

Oct. 11-20.......

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

Nov. 11-20.......

Nov. 21-30.......

Dec 1-10

Dec 1 1 -20

IV»n 91 ^1

Jan. 1-10, 1955 .. 

Jan. 11-20.......

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

Feb. 11-20.......

Mar. 1-10. .......

Mar. 11-20. ......

Mar. 21-31. ......

Runoff 

(acrefeet)

242,800 

262,900 

270, 500 

235,700 

233, 000 

207,200

245, 300 

224, 600 

271,100 

245, 500 

250, 500 

228,700

260, 200 

239, 400 

205,400 

259, 000 

292,400 

354.400

Silica 

(Si02) 

ppm

12 

13

Equivalents per million

Calcium 

(Ca)

4.69 

4.39 

4.69

4.74 

4.69 

4.74

4.79 

4.74 

4.69 

4.74 

4.44 

4.74

4.84 

4.94 

4.94 

5.14 

5.24 

5.29

Magnesium 

(Mg)

1.97 

2.38 

1.97 

1.97 

1.97 

2.06

1.97 

1.97 

2.06 

2.06 

2.47 

2.22

2.06 

2.14 

2.14 

2.22 

2.14 

2.30

Sodium 

(Na)

4.22 

3.91 

4.17 

4.17 

4.17 

4.13

4.13 

4.17 

4.13 

4.22 

4.17 

4.22

4.61 

4.48 

4.48 

4.52 

4.96 

4.96

Potassium 

(K)

0.12

.12

-

Bicarbonate 

(HC03)

2.72

2.62

2.74 

2.87

Sulfate 

(SOJ

6.06

6.22

-

Chloride 

(Cl)

2.14

2.37

-

Fluoride 

(F)

0.01

.02

-

Nitrate 

(NO,,)

0.04

.03

-

Boron 

(B) 

ppm

0.10

.13

-
Apr. 1-10, 1955.. 

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.......

Total or weighted 

average .......

289,700

306,800

286, 000

286, 800

311,800

328,900

242,800

178,800

258,000

232,000

309,300

305,600

263,900

244, 300

280, 800

250,800

190,900

179,800

9 276 000

14

--

--

--

--

15

__

--

--

..

--

--

5.29

4.89

5.34

5.34

5.39

5.29

5.39

5.49

5.49

5.49

5.19

5.29

5.39

5.44

5.49

5.39

5.49

5.44

5.09

2.38

2.88

2.30

2.30

2.22

2.38

2.30

2.22

2.22

2.06

2.63

2.30

2.22

2.22

2.14

2.22

2.14

2.30

2.22

4.96

4.96

5.09

4.78

4.78

5.17

5.17

4.87

4.87

5.13

4.91

4.61

4.61

4.74

4.96

4.78

4.78

4.78

4.61

.13

--

--

--

--

__

--

_-

--

.13

__

--

--

_-

--

--

2.85

2.85

2.92

2.84

2.84

2.82

2.80

2.85

2.82

2.82

2.85

2.82

2.85

2.82

2.85

2.72

2.82

2.82

__

7.12

--

__

--

-_

-.

7.14

__

--

-_

--

_.

2.88

--

..

__

--

_-

--

2.82

__

--

--

_-

-_

--

__

.02

--

--

--

__

--

-_

.01

--_

--

-_

-_

--

__

.04

--

--

__

--

--

--

.06

--

__

--

--

.-

--

--
DIVERSIONS AND RETURN FLOW AT AND BELOW IMPER

YUMA MAIN CANAL BELOW COLORADO RIVER SIPHON, AT Y

LOCATION. At gaging station on Yuma Main Canal below Colorado River siphon on Arizona 

drop power plant, and a quarter of a mile downstream from highway bridge over Colorad

RECORDS AVAILABLE. Chemical analyses: September 1926 to September 1928. October 1942 

EXTREMES, 1954-55. Specific conductance: Maximum observed, 1,300 micromhos Sept. 20; m

Percent sodium: Maximum, 43 Aug. 21-31; minimum, 39 Jan. 1 to Apr. 20.

EXTREMES, 1943-55. Specific conductance: Maximum observed, 1,300 micromhos Sept, 20, 

1953. 

Percent sodium: Maximum, 46 Nov, 21-30, 1953; minimum, 32 several periods in 1945, 19

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

in district office at Albuquerque, N. Mex. Samples collected prior to February 1943 

at Yuma. Records of discharge for water year October 1954 to September 1955 given in 

Chemical analyses, water year October 1954 to Septembe

Date 

of 

collection

Oct. 1-10, 1954... 

Oct. 11-20.......

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

Nov. 11-20.......

Dec. 1-10........

Dec. 11-20.......

Dec. 21-31.......

Jan. 1-10, 1955... 

Jan. 11-20.......

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

Feb. 11-20.......

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

Mar. 11-20. ......

Mar. 21-31. ......

Runoff 

(acrefeet)

11,380 

9,230 

8,730 

8,110 

8,400 

7,130

4,470 

4,950 

5,100 

1,880 

2,230 

6,400

7,490 

9,240 

6,320 

9,860 

12,170 

10,090

Silica 

(Si02) 

Ppm

14 

14 

14 

12 

12 

13

13 

12 

14 

14 

13 

15

13 

13 

16 

18 

16 

14

Equivalents per million

Calcium 

(Ca)

4.34 

4.39 

4.34 

4.44 

4.44 

4.44

4.44 

4.34 

4.49 

4.49 

4.44 

4.54

4.54 

4.54 

4.69 

4.89 

4.79 

4.79

Magnesium 

(Mg)

2.47 

2.47 

2.47 

2.47 

2.47 

2.47

2.47 

2.47 

2.63 

2.55 

2.55 

2.47

2.47 

2.55 

2.55 

2.47 

2.55 

2.47

Sodium 

(Na)

4.91 

4.87 

4.87 

4.87 

4.87 

4.87

4.91 

4.83 

4.74 

4.65 

4.61 

4.57

4.65 

4.70 

4.70 

4.70 

4.78 

4.78

Potassium 

(K)

0.12 

.12 

.12 

.12 

.12 

.12

.12 

.12 

.12 

.12 

.12 

.12

.12 

.12 

.12 

.12 

.12 

.13

Bicarbonate 

(HCOS)

2.84 

2.80 

2.79 

2.80 

2.77 

2.77

2.80 

2.77 

2.70 

2.70 

2.72 

2.72

2.79 

2.80 

2.85 

2.88 

2.82 

2.80

Sulfate 

(SO,)

6.35 

6.25 

6.35 

6.33 

6.35 

6.37

6.37 

6.39 

6.43 

6.35 

6.33 

6.29

6.31 

6.31 

6.50 

6.47 

6.58 

6.56

Chloride 

(Cl)

2.76 

2.74 

2.76 

2.76 

2.74 

2.71

2.71 

2.71 

2.68 

2.62 

2.59 

2.57

2.62 

2.62 

2.68 

2.74 

2.74 

2.74

Fluoride 

(F)

0.02 

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.02 

.02

Nitrate 

(NO,,)

0.02 

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.02 

.03

.02 

.03 

.03 

.03 

.02 

.02

B

p

0
Apr. 1-10, 1955 . . 

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

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

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

June 1-10 ........

July 1-10. ........

July 21-31. .......

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

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

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

Sept. 21-30. ......

Total or weighted 

average .......

8,860 

10, 100

11,220

9,710

10,040

12,950

10,930

13,270

9,690

10, 190

11,860

10,650

9,530

7,930

12,580

13,550

15,120

333,000

16 

20

14

16

17

16

18

21

17

15

14

14

14

17

14

18

20

17

16

4.79 

4.84

4.59

4.79

4.74

4 79

4.99

5.04 5 OQ

5.09

5.04

5.04

4.99

4.59

4.54

4.64

4.69

4.89

4.74

2.55 

2.71

2.80

2.55

2.63

2.71

2.88

2.88

2.88

2.80

2.88

2.88

119

3.12

2.80

3.21

2.88

2.71

4.83 

4.87

5.26

5.39

5.48

5.57

5.61

5.61

5.61

5.65

5.70

>i 74

5.78

5.57

5.87

5.78

5.26

.13 

i 1

.13

1 i

.13

.14

.14

.14

.14

.14

.14

.14

.15

1 R

.15

.14

.15

.14

0.13

2.82 

2.84

2.84

2.82

2.84

2.84

2.85

2.87

2.82

2.84

2 79

2.82

9 70

2.70

2.62

2.59

2.75

2.69

2.79

6.66

6.83

7.12

7.18

7 11

7 ^7

7 ^7

7 d.R

7 4^

7.41

7 17

7 41

7 79

7 91

7.22

7.89

7.52

6.93

2.82 

2.88

2.90

3.02

3.05

111

3.22 3 1 Q 3 99

3.22

1 99

3.24

3.27 3 1 Q

3.19

3.22

3.33

3.33

2.99

.02 

.02

.02

.00

.00

.00

.02

.02

fi9

.02

n9

.02

.02

.02

.02

.02

.02

.02

0.02

.02 

.02

.02

.02

.02

ni

.02

.03

AQ

.03

ni

.03

.03

.02

.02

.02

.03

.02

0.02

.31 

.29

.18

.18

.17

.19

.26

94

.26

.26

.24

.25

.25

.18

.17

.21

.20

.20

0.22
GUNNISON RIVER BASIN

GUNNISON RIVER NEAR GRAND JUNCTION, COLO.

LOCATION. At road bridge about a half mile downstream from gaging station, 1 mile downstre

canal, and 1£ miles downstream from mouth and Grand Junction, Mesa County. 

DRAINAGE AREA. 8,020 square miles, approximately (at gaging station). 

RECORDS AVAILABLE.--Chemical analyses: October 1931 to September 1955.

Water temperatures: April 1949 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 2,520 micromhos Sept. 29; minimum 

Percent sodium: Maximum, 34 Mar. 1-10; minimum, 21 May 1-10, 11-18. 

EXTREMES, 1941-55.--Specific conductance: Maximum daily, 2,680 micromhos Nov. 5, 1950; min

Percent sodium (1950-55): Maximum, 34 Feb. 1-10, 1951, Jan. 21-31, Feb. 21-29, 1952, Mar

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of spe

in district office at Salt Lake City, Utah. Records of discharge for water year October 

Chemical

Date 

of 

collection

Oct. 1-10, 1954 . . 

Oct. 11-20.......

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

Nov. 1-10........

Nov. 11-20.......

Nov. 21-30.......

Dec. 1-10........

Dec. 11-20.......

Jan. 1-10, 1955... 

Jan. 11-20.......

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

Feb. 11-20.......

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

Mar. 1-10. .......

Mar. 11-20. ......

Mar. 21-31. ......

Runoff 

(acrefeet)

20, 180 

24, 060 

20, 180 

16, 360 

16,880 

17, 540

18,020 

16,020 

15,150 

16,170 

13,750 

16,320

14,620 

15,130 

10,510 

21,850 

19,860 

16.870

Silica 

(Si02) 

ppm

18 

20

Equivalents per million

Calcium 

(Ca)

9.83 

8.48 

9.43 

9.73 

9.88 

7.78

8.68 

8.58 

8.18 

7.49 

7.04 

7.44

7.29 

7.53 

7.53 

7.24 

6.79 

6.29

Magnesium 

(Mg)

5.35 

5.18 

4.93 

5.51 

5.43 

4.36

5.10 

4.93 

5.10 

4.69 

5.02 

4.52

4.69 

4.44 

4.85 

3.78 

3.70 

3.87

Sodium 

(Na)

6.87 

5.48 

6.00 

6.70 

6.87 

5.61

6.57 

6.17 

6.13 

5.57 

5.57 

5.48

5.61 

5.61 

5.87 

5.65 

4.96 

3.44

Potassium 

(K)

0.17

.12

_.

Bicarbonate 

(HC03)

3.75

3.69

3.26

Sulfate 

(SO.,)

14.80

13.66

Chloride 

(Cl)

0.56

.51

._

Fluoride 

(F)

0.03

.02

._

Nitrate 

(NOS)

0.09

.19

__

Boron 

(B) 

ppm

0.22

.20

__
Apr. 1-10, 1955 . . 

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

Apr. 21-26.......

Apr. 27-30.......

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

May 11-18. .......

May 19-30. .......

May 31, June 1-10.

June 21-30, July 1. 

July 2-10. ........

July 11-20. .......

July 21-28. .......

July 29-31, Aug. 

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

Aug. 11-20.......

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

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

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

Sept. 21-30. ......

Total or weighted 

average .......

21,110 

38, 020 

23,330 

25,290 

87,150 

83,420 

86, 380 

70, 250

90, 510 

66, 330 

15,960 

8,866 

11,310

28, 370

15, 000 

15,800 

10, 240 

10,210 

15, 000

1,032,000

16 

15

--

4.99 

3.79 

3.89 

3.24 

3.24 

2.84 

3.69 

4.49

3.49 

4.24 

7.14 

8.73 

11.28

8.68

10.13 

10.78 

10.23 

12.43 

12.28

5.79

2.88 

2.14 

1.81 

.99 

.90 

.99 

1.48 

.90

1.15 

1.56 

3.29 

5.35 

5.67

3.54

4.69 

4.85 

6.33 

6.91 

6.33

2.80

3.22 

2.26 

1.78 

1.17 

1.09 

1.04 

1.78 

1.96

1.48 

2.09 

4.74 

6.35 

7.96

4.61

6.39 

5.96 

6.74 

7.83 

5.61

3.44

.09 

.17

2.98 

2.69 

2.54 

2.54 

2.87 

2.06 

2.15 

2.28

2.13 

2.33 

2.74 

2.98 

3.31

3.31

3.61 

3.44 

2.98 

3.31 

3.67

5.31 

17.01

.34 

.85 .02

.05 

.09 .24
GREEN RIVER BASIN

GREEN RIVER AT GREEN RIVER, UTAH

LOCATION.--At gaging station, 1 mile southeast of the town of Green River, Emery County, 2

117 miles upstream from mouth.

DRAINAGE AREA.--40",600 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: August 1928 to September 1955. 

Water temperatures: May 1949 to September 1955. 

Sediment records: May 1930 to September 1955.

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 1,120 micromhos Dec. 27; minimum 

minimum, 25 May 11-20. 

2,420 micromhos Sept. 29, 1943; 

Percent sodium: Maximum, 47 Nov. 21-24, 26, Dec. 1-10 

EXTREMES, 1941-55.--Specific conductance: Maximum daily

Percent sodium (1950-55): Maximum, 47 Nov. 21-24, 26", Dec. 1-10, 1954; minimum, 21 June 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of sp

district office at Salt Lake City, Utah. Records of discharge for water year October 1

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954... 

Oct. 11-20.......

Oct. 21-23,25-31 . 

rw»f 94.**

Nov. 11-20.......

Nov. 21-24, 26 ... 

Dec 1-10

Dec 11-20

rw»f 91 ^i

Jan. 1-10, 1955... 

Jan. 11-20 .......

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

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

Runoff 

(acrefeet)

42,840 

47,330 

44, 190 

4,220 

39,950 

40, 030 

20,710

29,430 

23,980 

26,240 

29,160 

24, 180 

26,380

30,450 

32,550 

23.400

Silica 

(Si02) 

ppm

14 

12

Equivalents per million

Calcium 

(Ca)

6.59 

4.99 

4.19 

5.74 

4.19 

4.54 

4.14

4.04 

5.04 

5.69 

4.74 

4.39 

4.54

4.34 

4.24 

3.84

Magnesium 

(Mg)

2.63 

3.12 

2.38 

3.54 

2.63 

2.80 

2.88

3.62 

3.45 

4.11 

3.37 

3.29 

2.80

2.55 

2.55 

2.71

Sodium 

(Na)

5.26 

4.74 

4.61 

7.44 

5.48 

6.22 

6.22

6.78 

7.09 

5.91 

5.35 

4.61 

4.48

3.87 

3.91 

3.87

Potassium 

(K)

0.15

.08

Bicarbonate 

(HCOS)

3.97

4.41

Sulfate 

(SOJ

7.93

6.60

Chloride 

(Cl)

1.24

1.41

Fluoride 

(?)

0.02

.01

Nitrate 

(NO,)

0.09

.05

Boro

(B) 

ppm

0.25

.20

a Not included for computation of weighted averages.
Mar. 1-10, 1955.. 

Mar. 11-20. ......

Mar. 21-31. ......

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

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

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

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

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

June 11-20.......

July 1-10. ........

July 21-26, 28-31. 

July 27. ..........

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

Aug. 21-26, 28-30 

Aug. 27, 31 ......

Sept. 1-2, 4-10... 

Sept. 3 ..........

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

Sept. 21-30. ......

Total or weighted 

average .......

36,100 

120,900 

80,470

69,240 

102,300 

139, 400 

159,700 

244, 800 

273, 100

202,700 

242, 600 

209,300 

119,700 

56,330 

42,450 

4,090

55,300 

50, 060 

44,870 

10,650 

27,510 

3,410 

20,310 

19,450

b 2,820,000

12 

12

--

4.04 

3.84 

3.79

4.14 

3.59 

3.09 

2.74 

2.69 

2.25

2.35 

2.25 

2.20 

2.25 

2.45 

3.19 

4.69

3.59 

3.74 

3.99 

6.64 

4.44 

7.68 

3.84 

3.84

3.19

2.55 

2.14 

2.38

2.47 

2.47 

1.48 

1.15 

.76 

.72

.76 

.82 

.79 

.72 

1.48 

1.23 

2.30

1.48 

2.22 

1.73 

3.21 

1.81 

2.30 

1.97 

2.47

1.56

4.04 

4.39 

4.57

4.30 

3.91 

2.44 

1.83 

1.17 

1.04

1.22 

1.26 

1.26 

1.26 

1.91 

3.13 

4.52

3.74 

4.09 

4.17 

5.78 

4.26 

4.83 

4.30 

4.70

2.74

.10 

.06

3.77 

3.61 

3.11 

2.90 

2.85 

2.39

2.39 

2.29 

2.33 

2.21 

2.65 

3.18 

2.98

3.22 

3.54 

3.41 

4.13 

3.34 

3.31 

3.38 

3.34

5.54 

2.54

1.02 

.68

.01 

.01

.06 

.02

b Represents 99 percent of runoff for water year October 1954 to September 1955.
SAN JUAN RIVER BASIN

SAN JUAN RIVER NEAR ARCHULETA, N. HEX

LOCATION. At gaging station 4| miles downstream from Los Pinos River and 4£ miles north

DRAINAGE AREA. 3,240 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: December 1954 to September 1955. 

Water temperatures: December 1954 to September 1955. 

Sediment records: December 1954 to September 1955.

EXTREMES, 1954-55. Specific conductance: Maximum observed, 634 micromhos Aug. 5; minim

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

in district office at Albuquerque, N. Mex. This station was formerly operated at a 

published as San Juan River near Blanco, N. Mex. Records of discharge for period De

Stage-discharge relation affected by ice Dec. 16, Dec. 18 to Mar. 10.

Chemical analyses, December 1954 to September 1955

Date 

of 

collection

Dec. 11-20, 1954 

Dec 21 31

Jan. 1-10, 1955 . 

Jan. 11-30......

Feb. 1-28. ......

Mar. 1-31 ......

Apr. 1-10. ......

May 1-31 .......

July 1-10 .......

July 11-31

Aug. 1-31 ......

Sept. 1-30 ......

Total or weighted 

average ......

Runoff 

(acrefeet)

3,950 

4,140 

4,380 

7,730 

12,750 

27,420

9,510 

35,690 

131,800 

119,400 

13,550 

28,700

66,580 

28,080

493,700

Silica 

(Si02) 

ppm

18 

19

16 

16

Equivalents per million

Calcium 

(Ca)

2.30

2.30

1.85

1.60

Magnesium 

(Mg)

0.99

.82

.62

.49

Sodium 

(Na)

1.70

1.61

1.00

.83

Potassium 

(K)

0.08

.08

.08

.08

Bicarbonate 

(HCOS)

2.69

2.46

1.92

1.82

Sulfate

(scg

2.02

2.00

1.42

.96

Chloride 

(Cl)

0.25

.24

.15

.17

Fluoride 

(F)

0.02

.02

.02

.02

Nitrate 

(N03)

0.00

.00

.01

.00

Boro

(B) 

ppm

0.0

.0

.1

.0
SAN JUAN RIVER BASIN Continued

SAN JUAN RIVER NEAR BLANCO, N. MEX.

LOCATION. At highway bridge, half a mile downstream from gaging station which is 1 mil

of Blanco, San Juan County.

DRAINAGE AREA.--3,560 square miles, approximately, (at gaging station). 

RECORDS 'AVAILABLE. Chemical analyses: October 1945.to December 1954 (discontinued). 

Water temperatures: March 1949 to December 1954 (discontinued). 

Sediment records: March 1949 to December 1954 (discontinued). 

EXTREMES, 1945-54. Specific conductance: Maximum observed, 1,420 micromhos Aug. 16, 1

Percent sodium: (1945-49, 1950-54) Maximum, 52 July 11-16, 18, 20, 1947; minimum, 13 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

in district office at Albuquerque, N. Mex. Site of data collection moved about 12 m

located on San Juan River near Archuleta, N. Mex. Records of discharge for October 

inflow between gaging station and sampling point.

Chemical analyses. October to December 1954

Date 

of 

collection

Oct. 1-10, 1954 .. 

Oct. 11-20. ......

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

Nov. 1-10. ...... .

Nov. 21-30. ......

Dec. 1-10. .......

Dec. 11-20. ...... 

Dec. 21-23. ......

Runoff 

(acrefeet)

14,600 

12,280 

8,150 

6,980 

4,600 

3,440

3,230 

3,140 

1,150

Silica 

(Si02) 

ppm

14

Equivalents per million

Calcium 

(Ca)

1.60

Magnesium 

(Mg)

0.47

Sodium 

(Na)

0.83

Potassium 

(K)

0.09

Bicarbonate 

(HCO,)

1.87

Sulfate 

(SOJ

0.94

Chloride 

(Cl)

0.14

Fluoride 

(F)

0.01

Nitrate 

(NO,)

0.01

B

p

0
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 an

DRAINAGE AREA.--23,000 square miles, approximately (at gaging station).

RECORDS AVAILABLE.--Chemical analyses: February to June 1927, October 1929 to Septemb

Water temperatures: May 1944 to September 1955.

Sediment records: August to September 1928, July 1929 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 1,670 micromhos July 28; min

Percent sodium: Maximum, 45 July 27-31; minimum, 22 June 11-20.

EXTREMES, 1929-55. Specific conductance (1941-55): Maximum daily, 2,110 micromhos Aug

June 17, 1952.

Percent sodium: Maximum, 58 Sept. 10, 1954; minimum, 11 May 21, 23-27, 29-31, July 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records o

district office at Salt Lake City, Utah. Records of discharge for water year Octobe

Chemical analyses, water year October 1954 to Septe

Date 

of 

collection

Oct. 1-11, 1954 . 

Oct. 12-20. .....

Oct. 21-31. .....

Nov. 1-10 ......

Nov. 21-30 .....

Dec. 1-10 ......

Dec. 11-20 .....

Dec. 21, 28, 31 . 

Jan. 1-10, 1955 . 

Jan. 11-20......

Jan. 21-31 ......

Feb. 1-10 ......

Feb. 14-18 .....

Feb. 21-28 .....

Mar. 1-10 ......

Mar. 11-20 .....

Mar. 21-31. .....

Runoff 

(acrefeet)

48,020 

27,370 

20,030 

14,830 

12,860 

11,540

11,630 

13,060 

2,530 

10,840 

11,150 

8,730

10,480 

6,600 

9,520 

22,360 

25,720 

14,870

Silica 

(Si02) 

ppm

16 

14 

13 

12 

11 

12

14 

15 

14 

14 

16 

14

13 

12 

12 

12 

12 

14

Equivalents per million

Calcium 

(Ca)

4.84 

3.74 

4.34 

4.74 

5.29 

5.59

6.09 

6.19 

5.99 

6.34 

5.89 

6.69

5.79 

5.79 

5.64 

5.49 

4.59 

5.49

Magnesium 

(Mg)

1.40 

1.23 

1.81 

2.06 

2.63 

3.04

3.45 

3.12 

3.21 

3.29 

2.88 

3.29

2.71 

2.63 

2.88 

2.63 

2.14 

2.55

Sodium 

(Na)

2.78 

1.96 

2.74 

3.30 

4.00 

4,39

4.74 

4.87 

5.17 

4.87 

4.39 

5.09

4.39 

4.26 

4.65 

4.26 

3.26 

3.26

Potassium 

(K)

0.13 

.09 

.07 

.08 

.08 

.09

.10 

.10 

.11 

.11 

.10 

.10

.10 

.10 

.10 

.13 

.13 

.12

Bicarbonate 

(HCOj)

3.61 

2.57 

2.69 

2.88 

3.00 

2.95

3.21 

3.21 

2.97 

3.39 

3.24 

3.47

3.28 

3.18 

3.18 

2.92 

2.75 

3.03

Sulfate 

(SOJ

5.06 

4.08 

5.68 

6.77 

8.18 

9.22

10.33 

10.22 

10.45 

10.16 

9.22 

10.76

8.93 

8.85 

9.18 

8.85 

6.68 

7.60

Chloride 

(Cl)

0.48 

.37 

.56 

.62 

.73 

.85

.93 

.93 

1.02 

1.02 

.90 

1.04

.90 

.90 

.90 

.76 

.68 

.79

Fluoride 

(F)

Nitrate 

(NOJ

0.04 

.03 

.05 

.05 

.05 

.06

.08 

.09 

.09 

.11 

.09 

.10

.08 

.08 

.09 

.11 

.10 

.08

B

p
Apr. 1-10, 1955. 

Apr. 11-20 .....

Apr. 21-30 .....

May 11-20 ......

May 21-31 ......

June 1-10. ......

July 1-10 .......

July 11-14, 16-20

July 27-31.......

Aug. 11-20 ..... 

Aug. 21-28, 30-31

Sept. 11-20 ......

Sept. 21 a .......

Sept. 22-30 ......

Total or weighted 

average .......

15,520 

18,700

28,260

41,570

67,560

77,180

71,760

83,860

52, 520

22,850

12,710 

1,870

6,270

21,060

44,380

54,600 

38,000 

5,490

12,090

3,740

936

10,800

b 965, 600

15 

14

13

15

14

13

12

10

15

16

18 

23

16

25

21

22 

21 

20

17

15

14

15

15

4.69 

4.59

3.34

2.99

2.-S4

2.25

2.30

2.00

2.15

2.69

4.09 

6.39

4.54

6.69

5.54

5.89 

4.69

3.99

4.49

4.24

3.89

2.06 

1.97

1.32

1.07

.65

.62

.82

.62

.62

.81

1.15 

1.40

1.56

1.73

1.73

1.48 

1.40

1.32

1.97

1.40

1.40

3.17 

3.00

1.87

1.48

.96

.96

.96

.74

.91

1.57

3.13

3.22

6.96

5.04

5. 57 

3.78

2.83

4.83

3.30

2.65

.10 

.10

.07

.07

.04

.05

.07

.05

.05

.07

.12

.12

.17

.15

.15 

.12

.12

.12

.12

0.09

2.84 

2.82

2.29

2.10

2.08

1 79

1.87

1.57

1.61

1.97

2.62 

3.15

2.85

3.90

4.23

4.13 

3.70 

3.64

2.69

2.36

3.02

2.98

2.64

6.35 

6.06

3.87

3.21

1.98

2.00

1.98

1.60

1.83

2.89

5.31 

7.20

5.91

11.05

7.52

8.29 

5.91 

10.76

5.08

8.18

10.47

5.43

4.93

.71 

.68

.65

.27

.16

.18

.20

.16

.19

.34

.51 

.68

.68

.65

.51

.51 

.45 

.48

.51

.85

.96

.62

0.45

.06 

.05

.04

.04

.03

.03

.02

.02

.02

.02

.04 

.02

.04

.02

.01

.00 

.00 

.00

.05

.03

.07

.06

0.04

a Not included for computation of weighted averages. b Represents 98 p
LITTLE COLORADO RIVER BASIN

LITTLE COLORADO RIVER AT CAMERON, ARIZ.

LOCATION. At bridge on U. S. Highway 89 at Cameron, Coconino County, 12 miles upstream 

stream from Moenkopi Wash, 9£ miles northwest of Cameron, and 45.5 miles upstream fr

DRAINAGE AREA. 26,500 square miles, approximately (above gaging station).

RECORDS AVAILABLE. Chemical analyses: October 1950 to September 1955. 

Water temperatures: October 1952 to September 1955.

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

available in district office at Albuquerque, N. Mex. Records of discharge for stati

water year October 1954 to September 1955 given in WSP 1393. Appreciable inflow betw

periods of storm runoff. Most of this inflow is from Moenkopi Wash but other arroyo

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-4, 8-9,1954 

Oct. 6-7, 10 .....

Oct. 11-14.......

Oct. 22. .........

Mar. 13-14, 1955. 

Mar. 23, 26-31... 

Mar. 24-25. .....

Apr. 1, 5-10.....

Apr. 11-12. ......

June 14-20.......

July 18-31 .......

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

Aug. 11-20 ......

Aug. 21-31 ......

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

Runoff 

(acrefeet)

Silica 

(Si02) 

ppm

29 

22

13

Equivalents per million

Calcium 

(Ca)

0.65 

3.29 

2.05 

1.35

11.78 

2.25 

3.14 

3.19 

3.54

0 

1.65 

1.45 

4.34

4.54 

2.54 

1.95 

2.00

Magnesium 

(Mg)

0.35 

1.23 

.90 

.35

5.18 

.82 

1.56 

.90 

1.97

52 

.71 

.50 

1.89

2.47 

1.23 

.82 

.90

Sodium 

(Na)

6.96 

9 

7.91 

8.61

7.22 

9.39 

14.35 

12.18 

15.83

4.78 

10.09 

8.44 

9.74

8.22 

8.65 

7.83 

7.48

Potassium 

(K)

0.07 

58

.13

Bicarbonate 

(HCOj)

a 4. 92 

5.11 

4.46 

3.29

4.06 

2.69 

 ? 1 1

2.92 

3.31

b3.12 

4.36 

3.59 

6.42

5.03 

4.49 

3.49 

2.90

Sulfate 

(S0<)

1.67 

5.95

2.21

Chloride 

(Cl)

1.24 

2.99

11.22

Fluoride 

(F)

0.05 

.05

.02

Nitrate 

(NO,)

0.02 

.00

.06

Bo

(B

pp

0.6

.

a Includes 0.27 equivalent per million of carbonate (CO3 ). 

b Includes 0.20 equivalent per million of carbonate (CO3 ).
VIRGIN RIVER BASIN

VIRGIN RIVER AT LITTLEFIELD, ARIZ.

LOCATION. At gaging station, three-eights of a mile downstream from Beaverdam Wash, thr

Mohave County, and 36 miles upstream from water line of Lake Mead at elevation 1,221 

DRAINAGE AREA.--5,090 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: July 1949 to September 1955. 

Water temperatures: October 1947 to September 1955. 

Sediment records: October 1947 to September 1955.

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 3,660 micromhos Oct. 19; 

Percent sodium: Maximum, 35 Jan. 1-10; minimum, 16 Aug. 11-20.

Maximum daily, 3,960 micromhos July 14, 

minimum, 16 Aug. 11-20,

EXTREMES, 1949-55.--Specific conductance:

Percent sodium (1953-55): Maximum, 35 Jan. 1-10, 1955;

minim

1954; 

1955.

REMARKS. Values reported for dissolved solids are sums of determined constituents. Rec

available in district office at Salt Lake City, Utah. Records of discharge for water 

in WSP 1393.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954 .. 

Oct. 11-20.......

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

Nov. 1-10........

Nov. 11-20.......

Nov. 21-30.......

Dec. 1-10........

Dec. 11-20.......

Dec. 21-31. ......

Jan. 1-10, 1955... 

Jan. 11-20 .......

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

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

Feb. 11-18. ......

Feb. 19..........

Feb. 20-28.......

Runoff 

(acrefeet)

3,630 

2,300 

2,690 

2,650 

3,330 

3,290

5,090 

4,160 

3,940 

3,840 

3,940 

3,980

3,590 

4,050 

768 

3.670

Silica 

(Si02) 

ppm

22 

19 

20 

21 

21 

20

17 

19 

21 

21 

19 

19

19 

20 

13 

Ifi

Equivalents per million

Calcium 

(Ca)

20.01 

21.26 

18.16 

17.22 

16.37 

15.87

15.27 

14.17 

14.67 

13.12 

13.22 

13.27

13.77 

13.47 

9.98 

13.17

Magnesium 

(Mg)

9.21 

8.88 

8.72 

8.55 

8.06 

8.14

6.74 

6.74 

6.91 

6.66 

6.66 

6.74

6.74 

6.74 

3.70 

6.58

Sodium 

(Na)

10.18 

12.61 

13.05 

12.83 

11.83 

11.83

9.96 

10.70 

10.96 

10.83 

10.57 

10.57

10.57 

10.57 

4.87 

10.00

Potassium 

(K)

0.56 

.59 

.59 

.67 

.59 

.59

.51 

.51 

.46 

.46 

.46 

.46

.46 

.46 

.25 

.43

Bicarbonate 

(HCO,)

5.15 

5.75 

5.39 

5.15 

5.15 

5.01

4.95 

5.28 

5.36 

4.93 

5.10 

5.00

5.20 

5.21 

3.44 

5.21

Sulfate 

(SOJ

25.82 

26.23 

23.53 

22.28 

20.47 

19.88

17.97 

16.95 

17.28 

16.22 

16.53 

16.61

16.51 

16.53 

11.24 

15.78

Chloride 

(Cl)

9.08 

11.00 

11.56 

11.85 

10.86 

11.00

9.03 

9.53 

9.93 

9.59 

9.53 

9.73

9.53 

9.53 

3.95 

8.74

Fluoride 

(F)

Nitrate 

(NO,)

0.02 

.04 

.05 

.05 

.05 

.05

.05 

.05 

.04 

.04 

.03 

.04

.03 

.03 

.04 

.03

Bor

(B

pp

0
VIRGIN RIVER BASIN Continued

VIRGIN RIVER AT LITTLEFIELD, ARIZ. Continued

Chemical analyses, water year October 1954 to September 1955--

Date 

of 

collection

Mar. 1-10, 1955.. 

Mar. 11-20. ......

Apr. 1-10........

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

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

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

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

June 1-10 ........

June 21-30 .......

July 1-10 ........

July 11-20 .......

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

Aug. 11-20.......

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

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

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

Sept. 21-30. ......

Total or weighted 

average .......

Runoff 

(acrefeet)

3,750 

3,390 

3,430

1,630 

2,010 

2,290 

2,130 

1,570 

1,460

1,310 

1,320 

1,330 

1,340 

1,560 

7,320

6,960 

7,880 

25,450 

1,620 

1,450 

1,400

135,500

Silica 

(Si02) 

ppm

21 

20 

20

22 

21 

19 

24 

25 

25

26 

24 

23 

30 

28 

26

24 

23 

25 

30 

29 

27

22

Equivalents per million

Calcium 

(Ca)

12.48 

12.77 

13.67

17.51 

16.97 

16.07 

14.97 

17.07 

17.91

17.17 

17.76 

18.36 

16.97 

17.86 

24.55

26.85 

28.14 

26.95 

17.17 

17.32 

17.32

19.36

Magnesium 

(Mg)

6.41 

6.50 

6.99

9.13 

8.63 

8.14 

8.14 

9.13 

9.46

10.36 

10.44 

10.36 

9.87 

9.70 

7.98

7.65 

6.00 

6.74 

9.13 

9.70 

9.29

7.48

Sodium 

(Na)

9.52 

9.52 

10.13

11.39 

11.39 

11.18 

11.35 

11.26 

11.22

10.65 

10.87 

10.91 

11.96 

11.74 

10.26

8.70 

6.57 

7.91 

10.91 

11.13 

10.78

9.92

Potassium 

(K)

0.56 

.56 

.59

.74 

.72 

.67 

.61 

.67 

.72

.79 

.82 

.84 

.84 

.82 

.59

.56 

.49 

.54

.77 

.77 

.72

0.56

Bicarbonate 

(HCOS)

4.92 

4.88 

5.00

5.13 

5.24 

5.38 

4.49 

5.00 

5.18

4.52 

5.10 

5.34 

4.16 

4.77 

5.62

5.67 

4.46 

4.65 

4.10 

4.59 

4.46

5.00

Sulfate 

(SOJ

15.49 

15.91 

17.40

22.90 

21.65 

20.30 

20.59 

23.32 

23.94

24.36 

24.36 

24.77 

24.36 

24.57 

28.94

30.40 

31.02 

30.60 

23.73 

23.53 

23.53

23.32

Chloride 

(Cl)

8.80 

8.60 

9.36

10.49 

10.58 

10.01 

10.29 

10.49 

10.49

10.58 

10.44 

10.58 

10.66 

10.38 

8.12

7.61 

5.92 

6.91 

10.10 

10.01 

9.93

8.85

Fluoride 

(F)

Nitrate

(Ncg

0.05 

.05 

.04

.02 

.03 

.03 

.05 

.03 

.03

.02 

.03 

.03 

.03 

.03 

.04

.05 

.04 

.04 

.04 

.05 

.04

0.04

Boro

(B) 

ppm

0.6

.6

.7

.9

.8

.8

.8

1.0 

1.0

1.0 

.9

.9

.9

.9

.6

.5

.4

.5

1.0

0.6
GILA RIVER BASIN 

GILA RIVER AT KELVIN, ARIZ.

LOCATION.--Just above mouth of Mineral Creek, and 1,200 feet upstream from gaging station 

downstream from San Pedro River and 19| miles upstream from Ashurst-Hayden Dam.

DRAINAGE AREA. 18,011 square miles (at gaging station) of which 5,125 square miles is b

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1955.

Water temperatures: December 1950 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum observed, 3,860 micromhos July 15; mini

Percent sodium: Maximum, 67 July 15; minimum, 12 July 1-10. 

EXTREMES, 1950-55. Specific conductance: Maximum observed, 3,860 micromhos July 15, 1955

Percent sodium: Maximum, 67 July 15, 1955; minimum, 12 July 1-10, 1955.

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of sp

district office at Albuquerque, N. Mex. Records of discharge for water year October 1

appreciable inflow from Mineral Creek between sampling point and gaging station, except 

Chemical analyses, water year October 1954 to Septembe

Date 

of 

collection

Oct. 1-10, 1954... 

Oct. 11-20 .......

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

NOT. 1-10, ........

Nov. 11-20. .......

Nov. 21-30 .......

Dec. 1-10 ........

Dec. 11-20 .......

Dec. 21-31 .......

Jan. 1-10, 1955 ... 

Jan. 11-16........

Jan. 17-20........

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

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

Feb. 11-20 .......

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

Runoff 

(acrefeet)

4,580 

3,920 

3,490 

2,850 

3,760 

3,760

3,520 

4,760 

6,100 

1,440 

500 

722

843 

1,190 

2,780 

2.440

Silica 

(Si02) 

ppm

31

Equivalents per million

Calcium 

(Ca)

3.19 

3.19 

3.54 

3.74 

3.49 

3.54

3.44 

2.54 

3.14 

5.99 

7.53 

6.04

7.93 

6.54 

4.64 

4.94

Magnesium 

(Mg)

0.99 

1.15 

1.23 

1.23 

1.15 

1.32

1.56 

1.40 

1.48 

2.30 

3.29 

2.14

3.04 

3.62 

2.06 

1.64

Sodium 

(Na)

4.35 

4.57 

4.91 

5.04 

5.09 

5.22

5.74 

5.91 

5.83 

7.26 

9.74 

6.09

9.04 

8.78 

7.35 

7.70

Potassium 

(K)

0.17

.22

Bicarbonate 

(HCO,)

3.83

3.97 

a 3. 73 

3.93 

4.82 

4.80 

4.26

4.92 

4.82 

4.46 

4.36

Sulfate 

(S0«)

2.29

5.98

Chloride 

(Cl)

2.65

4.94

Fluoride 

(F)

0.05

.06

Nitrate 

(NO,)

0.02

.04

Boro

(B) 

ppm

0.1

.23

a Includes 0. 30 equivalent per million of carbonate (CO3
GILA RIVER BASIN Continued 

GILA RIVER AT KELVIN, ARIZ . Continued

Chemical analyses, water year October 1954 to September 1955 --Con

Date 

of 

collection

Mar. 1-10, 1955... 

Mar. 11-20 .......

Mar. 21-31 .......

Apr. 1-10 ........

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

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

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

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

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

June 1-10. ........

June 11-13, 17-20 .

June 15-16. .......

June 21-30. .......

July 1-10 .........

July 11-14, 16, 18. 

July 15 ...........

July 17. 19-23 .... 

July 24-31 ........

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

Aug. 11-20 .......

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

Sept. 1-7 .........

Sept. 8-20 ........

Sept. 21-30 .......

Total or weighted 

average ........

Runoff 

(acrefeet)

3,190 

5,220 

8, 080 

8,340 

7,280 

2,770

434 

170 

58 

18 

29 

161

65 

26 

48 

599 

246 

8,600

21,200 

35,810 

23, 090 

37, 300 

3,850 

10, 220 

5,920

229, 400

Silica 

(Si02) 

ppm

23 

41

..

Equivalents per million

Calcium 

(Ca)

4.29 

4.19 

4.44 

5.14 

5.19 

6.09

7.44 

8.93 

8.83 

15.07 

12.87 

3.24

8.23 

17.81 

21.01 

16.72 

7.93 

5.74

3.54 

3.49 

4.49 

3.64 

3.69 

2.50 

2.79

3.99

Magnesium 

(Mg)

2.14 

2.06 

2.14 

2.22 

2.63 

3.27

3.95 

4.69 

4.61 

6.74 

5.67 

1.56

3.21 

7.81 

8.96 

7.40 

4.69 

2.55

1.32 

1.40 

1.48 

1.32 

1.23 

.82 

.90

1.56

Sodium 

(Na)

8.04 

8.04 

9.13 

9.57 

11.39 

12.96

12.52 

13.13 

12.61

7.87 

8.87 

3.48

5.65 

6.22 

4.09 

7.61 

25.44 

5.13

2.52 

3.00 

2.83 

3.04 

4.22 

3.35 

3.74

4.74

Potassium 

(K)

0.20 

.15

..

Bicarbonate 

(HCOS)

4.38 

4.57 

4.64 

4.85 

4.97 

4.69

4.15 

4.18 

3.95 

4.54 

4.31 

5.77

3.43 

4.52 

4.21 

4.56 

3.90 

9.64

5.08 

4.79 

4.20 

4.42 

3.90 

3.13 

3.11

4.65

Sulfate 

(SOJ

3.29 

27.69

..

Chloride 

(Cl)

8.66 

2.26

..

Fluoride 

(F)

0.06 

.02

..

Nitrate

(Ncg

0.06 

.01

..

Boro

(B) 

ppm

0.27 

.08

.
GILA RIVER BASIN Continued

GILA RIVER BELOW GILLESPIE DAM, ARIZ.

LOCATION. About 1 mile below gaging station on Gila Bend Canal which is 200 feet below Gill

downstream from Hassayampa River. Gila Bend Canal diverts from left bank and Enterprise 

DRAINAGE AREA. 49,620 square miles. 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1955.

Water temperatures: December 1950 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum observed, 9,670 micromhos Dec. 1; minimum 

Percent sodium: Maximum, 67 Oct. 21 to Dec. 20, Feb. 1-20, Apr. 21-30, May 21 to June 10, 

EXTREMES, 1950-55. Specific conductance: Maximum observed, 10,200 micromhos Oct. 3, 1951; 

Percent sodium: Maximum, 69 Aug. 6-10, 1951, June 11-20, 1952, June 11 to July 10, 1954; 

REMARKS. Values reported for dissolved solids are sums of determined constituents. Records 

available in district office at Albuquerque, N. Mex. Samples from canal are believed to 

Gillespie Dam including spill and amounts diverted into Gila Bend and Enterprise Canals. 

for the river and canals for water year October 1954 to September 1955 given in WSP 1393.

Chemical analyses, water year October 1954 to September 19

Date 

of 

collection

Oct. 1-10, 1954. 

Oct. 11-20......

Oct. 21-31......

Nov. 1-10 ......

Nov. ll-20i.....

Nov. 21-30......

Dec. 1-10 ......

Dec. 11-20 .....

Dec. 21-31 .....

Jan. 1-10, 1955. 

Jan. 11-20......

Jan. 21-31. .....

Feb. 1-10 ......

Feb. 11-20 .....

Feb. 21-28 .....

Mar. 1-10......

Mar. 11-20. ....

Mar. 21-31.....

Runoff 

(acrefeet)

555 

480 

543 

476 

472 

508

502 

527 

611 

648 

916 

938

718 

708 

553 

710 

763 

752

Silica 

(Si02) 

ppm

35 

32 

34 

31 

34 

33

31 

36 

32 

30 

34 

36

32 

32 

33 

30 

31 

30

Equivalents per million

Calcium 

(Ca)

19.41 

19.21 

19.01 

19.01 

19.21 

18.61

19.61 

19.41 

19.41 

18.61 

16.72 

18.41

17.61 

17.61 

18.21 

18.61 

17.61 

18.21

Magnesium 

(Mg)

13.49 

13.08 

12.66 

13.49 

13.49 

13.90

13.08 

13.49 

13.49 

12.91 

12.99 

14.47

14.47 

13.49 

13.57 

13.49 

11.76 

12.91

Sodium 

(Na)

63.92 

64.36 

65.23 

67.40 

67.40 

66.97

66.53 

66:10 

64.79 

62.62 

58.27 

62.18

64.36 

63.49 

63.49 

63.05 

58.70 

61.75

Potassium 

(K)

0.33 

.31 

.31 

.31 

.31 

.31

.31 

.31 

.31 

.28 

.31 

.31

.31 

.31 

.31 

.28 

.28 

.31

Bicarbonate 

(HCOj)

6.11 

5.72 

5.65 

5.62 

6.05 

6.05

6.29 

6.36 

6.64 

6.51 

5.74 

6.28

6.26 

6.23 

6.26 

5.95 

5.70 

5.57

Sulfate 

(SO,)

26.44 

26.65 

27.06 

27.90 

28.11 

27.90

27.90 

27.69 

27.27 

26.02 

24.57 

27.06

27.06 

27.27 

27.27 

26.86 

24.77 

26.02

Chloride 

(Cl)

63.74 

64.59 

64.59 

65.43 

66.28 

65.43

65.71 

65.15 

64.59 

62.33 

57.82 

62.05

62.89 

61.48 

61.20 

63.46 

57.82 

61.77

Fluoride 

(F)

0.14 

.15 

.15 

.15 

.14 

.14

.14 

.14 

.15 

.15 

.13 

.12

.15 

.15 

.14 

.14 

.15 

.14

Nitrate 

(NOs)

0.66 

.68 

.71 

.71 

.69 

.66

.73 

.81 

.79 

.71 

.65 

.74

.73 

.68 

.65 

.63 

.66 

.68

Boron 

(B) 

ppm

3.2 

3.3 

3.3 

3.5 

3.5 

3.5

3.5 

3.6 

3.5 

3.5 

4.0 

4.4

4.4 

4.3 

4.6 

3.2 

3.0 

2.9
GILA RIVER BASlN--Continued

GILA RIVER BELOW GILLESPIE DAM, ARIZ.--Continued 

Chemical analyses, water year October 1954 to September 1955--C

Date 

of 

collection

Apr. 1-10, 1955. 

Apr. 11 20 .....

Apr. 21-30 .....

May 1-10.......

May 11-20......

May 21-31 ......

June 1-10. ......

June 11-15, 17-20 

June 16. ........

June 21-30 .....

July 1-10 ......

July 11-18 .....

July 19-21, 24-31 

July 22 .........

July 23 .........

Aug. 1, 18-23. . . 

Aug. 2 .........

Aug. 3-9 .......

Aug. 10-17. .....

Aug. 24-29. .....

Aug. 30-31 .....

Sept. 1-5...... .

Sept. 6-10. .....

Sept. 11-20. ....

Sept. 21-30. ....

Total or weighted 

average .....

Runoff 

(acrefeet)

547 

583 

531 

535 

424 

403

295 

292 

44 

295 

280 

266 

14,950 

48 

234

6,820 

2,720 

20, 120 

29,020 

27,230 

1,530 

1,110 

595 

1,180 

1,020

122,500

Silica 

(Si02) 

ppm

28 

33 

37 

34 

30 

26

23 

30 

30 

26 

27 

23 

27 

20 

15

28 

13 

25 

27 

25 

28 

36 

41 

40 

34

27

Equivalents per million

Calcium 

(Ca)

17.61 

17.81 

17.42 

17.42 

18.01 

18.01

17.61 

17.22 

10.08 

16.62 

16.82 

17.22 

2.59 

8.13 

3.84

4.89 

1.60 

3.09 

5.24 

3.34 

10.68 

9.93 

18.01 

19.81 

22.80

6.19

Magnesium 

(Mg)

13.08 

12.91 

12.91 

12.34 

12.66 

12.34

13.08 

12.09 

5.67 

13.49 

13.49 

13.49 

.82 

4.11 

1.32

1. 56 

.30 

.78 

1.97 

.78 

5.26 

5.59 

14.64 

15.21 

12.66

3.13

Sodium 

(Na)

60.88 

59.14 

60.88 

57.83 

60.88 

60.88

61.75 

56.53 

24.44 

59. 57 

60.01 

60.88 

3.35 

20.87 

6.26

5.04 

1.78 

2.70 

11.31 

2.96 

24.92 

27.18 

63.92 

69.57 

71.75

14.75

Potassium 

(K)

0.28 

.31 

.31 

.31 

. 31 

.31

.31 

.28 

.28 

.31 

.31 

.31 

.17 

.28 

.21

.17 

.21 

.17 

.20 

.17 

.26 

.31 

.36 

.33 

.33

0.20

Bicarbonate 

(HCOS)

5.47 

5.57 

5.15 

5.88 

5.85 

5.51

5.23 

5.51 

4.42 

4.51 

4.47 

5.10 

3.52 

3.65 

2.57

4.11 

2.49 

3.77 

3.54 

3.52 

4.77 

4.36 

5.97 

6.26 

6.19

3.97

Sulfate 

(SOJ

25.40 

24.98 

25.61 

24.36 

25.40 

25.61

26.23 

24.15 

10.35 

25.61 

26.02 

26.23 

1.48 

8.87 

2.31

3.77 

.54 

1. 58 

5.93 

2.31 

11.66 

13.41 

27.27 

29.56 

31.02

6.93

Chloride 

(Cl)

61.77 

60.35 

61.77 

57.53 

60.35 

60.35

61.48 

55.56 

24.82 

58.38 

58.94 

59.23 

1.81 

20.17 

6.49

3. 58 

.73 

1.16 

8.80 

1.18 

24.11 

25.66 

62.61 

68.53 

70.23

13.08

Fluoride 

(F)

0.14 

. 14 

.14 

.15 

.14 

.15

. 14 

.15 

.08 

.13 

. 14 

.14 

.04 

.08 

.04

.04

.04 

.05 

.04 

.07 

.07 

.13 

.13 

.12

0.06

Nitrate 

(N03)

0.56 

.66 

.58 

.61 

.50 

.50

.52 

.44 

.29 

.50 

.48 

.47 

.06 

.19 

.11

.07 

.03 

.09 

.27 

.12 

.27 

.27 

.55 

.58 

.58

0.23

Boron 

(B) 

ppm

2.8 

3.1 

3.0 

2.8 

3.0 

3.3

3.1 

2.6 

1.3 

3.2 

3.3 

3.3 

.47 

1.4 

.55

.84 

.70 

.66 

1.4 

.70 

1.9 

1.4 

2.9 

3.4 

3.3

1.3
GILA RIVER BASIN Continued

SALT RIVER AT STEWART MOUNTAIN DAM, ARIZ.

LOCATION. Just below dam, 3i miles above gaging station below Stewart Mountain Dam, whic

Maricopa County.

DRAINAGE AREA.--6,211 square miles. 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1955.

Water temperatures: December 1950 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum observed, 1,410 micromhos Sept. 27-28, 

Percent sodium: Maximum,68 Feb. 17-28, Apr. 11-30, Aug. 1-10, Sept. 11-30; minimum,62 

EXTREMES, 1950-55.--Specific conductance: Maximum observed, 2,490 micromhos Aug. 20, 195

Percent sodium: Maximum, 76 July 21-31, Aug. 11-26, 1951; minimum, 53 Mar. 21-31, Apr. 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of s

district office at Albuquerque, N. Mex. Records of discharge for gaging station belo

to September 1955 given in WSP 1393. No inflow between sampling point and gaging stat

Chemical analyses, water year October 1954 to Septembe

Date 

of 

collection

Oc!. 1-10, 1954 . .

Oct. 11-20 ......

Nov. 1-10 .......

Nov. 21-30 ......

Dec. 1-10 .......

Dec. 11-20 ......

Dec. 21-31.......

Jan. 1-10, 1955 .. 

Jan. 11-20.. .....

Jan. 21-26 a .... 

Feb. 17-20 ......

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

Mar. 1-10 .......

Mar. 11-20 ......

Runoff 

(acrefeet)

10, 590

7,200 

6,720 

7,470 

5,340 

4,680

3,920 

11,640 

21,620 

264 

28 

4.4

5,190 

7,100 

17,580 

19,140 

19,150

Silica 

(Si02) 

ppm

18 

13

Equivalents per million

Calcium 

(Ca)

2:30 

2.45 

2.40 

2.40 

2.40 

2.25

2.35 

2.25 

2.35 

2.54 

2.50 

2.50

2.10 

2.05 

2.40 

2.35 

2.50

Magnesium 

(Mg)

0.99 

1.07 

1.15 

1.15 

1.15 

1.15

1.23 

1.15 

1.07 

1.07 

1.15 

1.07

1.07 

1.07 

1.23 

1.23 

1.23

Sodium 

(Na)

6.00 

6.04 

6.09 

6.17 

6.04 

6.35

6.00 

6.09 

5.96 

6.00 

6.13 

6.04

6.74 

6.78 

6.61 

7.13 

7.61

Potassium 

(K)

0.13

.13

Bicarbonate 

(HC03)

2.59

2.56 

2.57 

2. 57 

2.77 

2.67 

2.72

b2.59 

2.57 

2.75 

2.79 

2.80

Sulfate 

(S04)

0. 87

.90

Chloride 

(Cl)

6.09

6.09

Fluoride 

(F)

0.02

.02

Nitrate 

(NOS)

0.04

.03

Bo

(B

pp

0

a No flow Jan. 27 to Feb. 16.

b Includes 0.23 equivalent per million of carbonate (CO3 ).
GILA RIVER BASIN--Continued

SALT RIVER AT STEWART MOUNTAIN DAM, ARIZ . Contin

Chemical analyses, water year October 1954 to Septemuer 1955-

Date 

of 

collection

Apr. 1-10, 1955. . 

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

Apr. 21-30 ......

May 11-20 .......

May 21-31 .......

July 11-20 .......

Aug. 11-20 ......

Aug. 21-31 ......

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

Sept. 11-20 ......

Sept. 21-30 ......

Total or weighted 

average .......

Runoff 

(acrefeet)

27,430 

24,530 

17,600 

15,610 

19,330 

22,490

23,480 

22,590 

32,360 

32,160 

32,720 

10,850

10,590 

14,940 

37,840 

36,230 

30,050 

23,210

581,800

Silica 

(Si03) 

ppm

14 

14

..

Equivalents per million

Calcium 

(Ca)

2.69 

2.45 

2.45 

2.59 

2. 59 

2.69

2.59 

2.64 

2.64 

2.69 

2.54 

2.64

2.79 

2.64 

2.59 

2.59 

2.59 

2.59

2.54

Magnesium 

(Mg)

1.23 

1.32 

1.32 

1.40 

1.40 

1.32

1.48 

1.40 

1.48 

1.40 

1.81 

1.81

1.48 

1.73 

2.06 

1.64 

1.56 

1.89

1.48

Sodium 

(Na)

7.83 

7.83 

7.87 

7.22 

7.39 

7.52

7.61 

7.70 

7.83 

8.52 

9.00 

9.13

9.04 

8.78 

8.78 

8.74 

8.78 

9.31

7.82

Potassium 

(K)

0.14 

.15

Bicarbonate 

(HCO,)

2.79 

2.77 

2.80 

2.80 

2.84 

2.84

2.87 

2.85 

2.85 

2.88 

2.93 

2.90

2.95 

2.88 

2.84 

2.85 

2.75 

2.92

2.80

Sulfate 

(SOJ

1.08 

1.12

Chloride 

(Cl)

7.90 

8.69

..

Fluoride 

(F)

0.02 

.02

__

Nitrate

(Ncg

0.0 

.01

..

Bor

(B

ppm

0.1

.0

_
GILA RIVER BASIN Continued

VERDE RIVER BELOW BARTLETT DAM, ARIZ.

LOCATION. --At gaging station 2\ miles downstream from Bartlett Dam, Maricopa County and at

DRAINAGE AREA. --6, 188 square miles.

RECORDS AVAILABLE. --Chemical analyses: December 1950 to September 1955.

Water temperatures: December 1950 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum observed, 676 micromhos Nov. 16; minimu

Percent sodium: Maximum 28 Aug. 1-20, Sept. 1-10; minimum, 22 July 1-10. 

EXTREMES, 1950-55 . --Specif ic conductance: Maximum observed, 725 micromhos June 28, 1951; 

Percent sodium: Maximum, 31 July 21-31,1951, Nov. 1-20,1953; minimum, 12 Jan. 4-20, 195

REMARKS. --Values reported for dissolved solids are residues on evaporation. Records of sp

in district office at Albuquerque, N. Mex . Records of discharge for water year October 

Chemical analyses, water year October 1954 to Septembe

Date 

of 

collection

Oct. 1-10, 1954..

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

Nov. 11-20 ......

Nov. 21-30 ......

Dec. 1-10 .......

Dec. 11-20 ......

Dec. 21-31 ......

Jan. 1-10, 1955.. 

Jan. 11-21 ......

Jan. 22-31.......

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

Feb. 11-20 ......

Feb. 21-28 ......

Mar. 1-10.......

Mar. 11-20.. ....

Mar. 21-31......

Runoff 

(acrefeet)

1,250 

1,200 

1,310 

1,180 

1,190 

1,180

1,190 

1,210 

1,300 

1,260 

964 

2,110

855 

2,390 

436 

551 

9,290 

20.250

Silica 

(Si02) 

ppm

24 

22

Equivalents per million

Calcium 

(Ca)

2.35 

2.45 

2.30 

2.40 

2.40 

2.45

2.25 

2.30 

2.25 

2.40 

2.40 

2.20

2.30 

2.20 

2.30 

2.10 

2.05 

2.05

Magnesium 

(Mg)

2.47 

2.88 

2.96 

3.04 

3.21 

3.21

3.12 

3.12 

3.21 

2.96 

3.12 

3.12

3.12 

2.96 

2.96 

2.96 

3.04 

2. 96

Sodium 

(Na)

1.61 

1.65 

1.74 

1.83 

1.83 

1.87

1.96 

1.87 

1.83 

1.74 

1.83 

1.78

1.78 

1.78 

1.78 

1.74 

1.78 

1. 78

Potassium 

(K)

0.10

.09

Bicarbonate 

(HC03)

4.39

4.77 

4.83 

4.83 

5.01 

4.77 

4.64

4.62 

4.61 

4.67 

4.79 

4.75 

4 75

Sulfate 

(SOJ

1.46

1.50

Chloride 

(Cl)

0.68

.56

Fluoride 

(F)

0.02

.01

Nitrate 

(NO,)

0.02

.00

Boro

(B) 

ppm

0.22

.23
GILA RIVER BASIN--Continued

VERDE RIVER BELOW BARTLETT DAM, ARIZ. Continu

Chemical analyses, water year October 1954 to September 1955--C

Date 

of 

collection

Apr. 1-10, 1955..

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 ......

Total or weighted 

average .......

Runoff 

(acrefeet)

5,650

4,200 

2,880 

2,930 

2,900 

3,200

5,290 

5,830 

20,050 

13,430 

12,770 

3,240

3,410 

4,320 

3,120 

7,660 

3,520 

1,890

155,400

Silica 

(Si02) 

ppm

21 

29

Equivalents per million

Calcium 

(Ca)

2.40 

2.20 

2.20 

2.25 

2.30 

2.30

2.30 

2.20 

2.20 

2.30 

2.10 

2.10

2.10 

1.95 

2.25 

2.69 

1.85 

1.75

2.20

Magnesium

(MB)

2.80 

2.80 

2.88 

2.96 

2.88 

2.80

2.88 

2.96 

2.96 

2.80 

2.80 

2.88

2.80 

2.80 

2.63 

1.73 

1.73 

2.55

2.80

Sodium 

(Na)

1.74 

1.70 

1.65 

1.57 

1.57 

1.57

1.52 

1.61 

1.70 

1.48 

1.74 

1.78

1.87 

1.87 

1.78 

1.70 

1.13 

1.52

1.70

Potassium 

(K)

0.08 

.10

Bicarbonate 

(HCOS)

4.82 

4.79 

4.72 

4.74 

4.65 

4.69

4.64 

4.70 

4.65 

4.39 

4.26 

4.29

4.25 

4.06 

4.39 

3.97 

3.18 

3.44

4.51

Sulfate 

(SOJ

1.39 

1.42

Chloride 

(Cl)

0.73 

.71

Fluoride 

(F)

0.02 

.02

Nitrate 

(NO,)

0.01 

.01

Boron 

(B) 

ppm

0.27 

.26
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 

Maricopa County, and 23 miles upstream from New River.

DRAINAGE AREA. 1,460 square miles, approximately (above Lake Pleasant). 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1955.

Water temperatures: December 1950 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum observed, 579 micromhos June 15; minimu

Percent sodium: Maximum, 29 June 11-20; July 11-25, 28-31; minimum, 24 Sept. 1-10. 

EXTREMES, 1950-55.--Specific conductance: Maximum observed, 600 micromhos Sept. 26, 1954; 

Percent sodium: Maximum, 29 Sept. 21-30, 1954, June 11-20, July 11-25, 28-31, 1955; min

REMARKS. Values reported for dissolved solids are residues on evaporation. Samples colle

Records of specific conductance of daily samples available in district office at Albuqu

Maricopa County Water District through Surface Water Branch, Tuscon District for water 

diversions to canal below Lake Pleasant diversion dam are published as Agua Fria River 

Chemical analyses, water year October 1954 to September 1

Date 

of 

collection

Oct. 1-2, 1954 . . . 

June 11-20, 1955 .

July 1-10 ........

July 11-20.......

July 21-25, 28-31

Aug. 1-3, 6, 9-10 

Aug. 11-20 ......

Aug. 21-31 ......

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

Sept. 11-20 ......

Sept. 21-30 ......

Total or weighted 

average .......

Runoff 

(acrefeet)

a33 

1,430 

1,990 

2,190 

2,140 

a 1,050

a291 

394 

1,140 

1,360 

1,410 

1,650

15, 070

Silica 

(Si02) 

ppm

38 

14

Equivalents per million

Calcium 

(Ca)

2.10 

2.40 

2.00 

2.00 

1.75 

1.70

1.65 

1.60 

1.65 

1.85 

1.75 

1.60

1.85

Magnesium 

(Mg)

1.48 

1.73 

1.64 

1.64 

1.64 

1.48

1.25 

1.23 

1.23 

1.15 

1.15 

1.15

1.48

Sodium 

(Na)

1.43 

1.65 

1.43 

1.35 

1.39 

1.30

1.09 

1.09 

1.04 

.96 

.96 

.96

1.26

Potassium 

(K)

0.14 

.15

Bicarbonate 

(HCO,)

3.47 

4.03 

3.49 

3.44 

3.29 

3.44

3.13 

2.92 

2.95 

2.95 

2.85 

2.59

3.23

Sulfate 

(SOJ

0.83 

.87

Chloride 

(Cl)

0.71 

.79

Fluoride 

(F)

0.01 

.02

Nitrate 

(NO,)

0.02 

.05

Boro

(B) 

ppm

0.4

.1

a No flow Oct. 3 to June 10, July 26-27, Aug. 4-5, 7-8.
PART 10. THE GREAT BASIN

SEVIER LAKE BASIN 

SEVIER RIVER NEAR LYNNDYL, UTAH

LOCATION.--At bridge on State Highway 125, \\ miles upstream from gaging station, which 

DRAINAGE AREA. 6,270 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1955.

Water temperatures: March 1951 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 7,040 micromhos Jan. 21; minim

Percent sodium.--Maximum, 61 Sept. 11-20; minimum, 40 Mar. 9-12. 

EXTREMES, 1951-55. Specific conductance: Maximum daily, 7,040 micromhos Jan. 21, 1955; 

Percent sodium: Maximum, 61 Sept. 11-20, 1955; minimum, 39 Oct. 5-6, 8-9, 1952.

REMARKS: Values reported for dissolved solids are sums of determined constituents. Rec

available in district office at Salt Lake City, Utah. Records of discharge for water 

WSP 1393.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-6, 1954 . . 

Oct. 7-10 ......

Oct. 11-15 .....

Oct. 16-20 .....

Oct. 21-31 .....

Nov. 1-10 ......

Nov. 11-17 .....

Nov. 18-24,27-30 

Nov. 25-26......

Dec. 1-10 ......

Dec. 11-20 .....

Dec. 21-31 .....

Jan. 1-10, 1955 . 

Jan. 11-15 .....

Jan. 16-22 ......

Jan. 23-31 .....

Feb. 1-10 ......

Feb. 11-19 .....

Feb. 20-28,

Mnr 1 }

Runoff 

(acrefeet)

585 

200 

163 

250 

1,280 

1,440 

2,090 

611 

143

377 

331 

379 

341 

169 

236 

303

357 

337

A a/i

Silica 

(Si02) 

pptn

16 

17 

19 

16 

15 

17 

21 

22 

19

22 

22 

26 

27 

27 

33 

30

26 

26

 } }

Equivalents per million

Calcium 

(Ca)

4.14 

5.59 

6.99 

4.64 

4.44 

4.19 

4.34 

7.14 

5.09

7.29 

8.23 

7.68 

8.28 

7.49 

11.43 

9.43

8.78 

7.88

7 /Id

Magnesium 

(Mg)

7.81 

11.84 

13.65 

8.31 

7.57 

7.73 

9.13 

12.50 

8.63

12.50 

12.83 

12.75 

12.17 

12.00 

22.86 

15.05

12.91 

12.34

11 7fi

Sodium 

(Na)

12.74 

24.66 

28.79 

14.83 

11.35 

11.44 

17.61 

25.13 

1-3. 57

25.70 

27.31 

27.26 

25.87 

25.79 

44.35 

32.13

26.87 

25.22

 M A 8

Potassium 

(K)

0.15 

.23 

.24 

.16 

.14 

.15 

.20 

.20 

.15

.21 

.23 

.20 

.19 

.19 

.31 

.22

.18 

.21

11

Bicarbonate 

(HC03)

4.97 

5.13 

5.74 

4.87 

4.80 

4.65 

5.18 

5.80 

4.79

5.65 

6.52 

6.23 

6.36 

5.67 

7.93 

7.37

7.11 

6.08

«i 75

Sulfate 

(S0«)

7.77 

14.89 

17.38 

9.08 

7.39 

7.64 

10.58 

15.16 

8.56

15.64 

16.68 

16.55 

16.07 

15.84 

27.48 

19.69

16.38 

15.76

1/1 07

Chloride 

(Cl)

12.13 

22.14 

25.95 

13.96 

11.22 

11.34 

15.93 

23.69 

13.40

23. 69 

25.38 

24.25 

23.97 

23.55 

42.87 

29.33

24.82 

24.54

 ?i «i«i

Fluoride 

(F)

Nitrate 

(NO,)

0.04 

.03 

.02 

.03 

.04 

.05 

.12 

.04 

.07

.05 

.04 

.05 

.06 

.05 

.04 

.07

.04 

.10

m

Boro

(B) 

ppm

0.38 

.61 

.68 

.40 

.30 

.26 

.45 

.52

.51 

.52

.63 

.86

.56 

w
Mar. 3-8, 1955 . 

Mar. 9-12 ......

Mar. 16-20 .....

Mar. 21-22 .....

Mar. 27-31 .....

Apr. 1-10 ......

Apr. 11-20 .....

Apr. 21-26,28-30

May 1-10 ......

May 11-20 .....

May 21-31 ......

June 11-20 .....

July 1-10 .......

July 11-20 ......

July 21-31 ......

Aug. 1-10 ......

Aug. 11-20 .....

Aug. 21-31......

Sept. 11-20 .....

Sept. 21-30.....

Total or weighted 

average .....

615 

1,550

311

196

67

97

545

1,110

821

1,790 

315

13,000

11,880

8,200

5,450

5,060

3,860

11,330

12,200

4,640

3,620

4,290

6,970

4,330

3,300

1,530

b 116, 500

16 

12

24

27

27

17

14

16

20

28

27

26

26

24

28

30

28

27

23

26

30

28

23

18

26

3.89 

2.59

8.63

8.73

7.63

4.59

4.19

4.69

4.49

4.49

4.39

4.49

4.34

4.29

4.24

4.39

4.44

4.29

3.84

3.39

3.74

3.69

3.29

3.79

4.34

5.67 

2.38

13.32

14.06

10.12

7.24

8.14

8.31

7.40

7.24

7.40

7.40

7.73

8.06

7.98

7.98

8.14

8.31

6.06

7.65

8.22

8.55

8.88

7.81

7.98

8.70 

3.48

28.13

30.44

19.13

10.18

11.61

12.44

12.13

15.74

16.13

16.13

15.39

15.92

14.96

16.26

17.00

16.87

15.96

15.61

17.92

18.61

18.96

13.91

16.36

.16 

.21

.36

.33

.26

.16

.17

.18

.16

.19

.18

.18

.20

.20

.17

.20

.20

.22

.19

.31

.22

.22

.20

.16

0.20

4.03 

2.61

2.85

6.16

5.88

5.47

4.62

4.62

4.77

4.88 

4.79

5.24

5.20

5.08

4.88

4.74

4.62

4.97

4.97

4.92

4.67

4.36

4.65

4.70

4.39

4.54

4.92

6.08 

2.79

5.35

17.63

19.13

11.97

6.72

7.81

8.08

7.33 

3.79

8.91

9.01

9.04

9.20

9.64

8.81

9.45

9.68

9.62

9.08

8.56

9.58

9.93

9.87

7.95

9.37

8.40 

3.24

6.77

27.22

29.05

19.80

10.66

12.07

12.69

11.79 

6.49

13.26

13.40

13.54

13.59

14.33

13.54

14.38

14.61

14.81

14.10

13.48

15.17

16.02

16.41

12 92

14.30

.05 

.05

.06

.05

.03

.04

.05

.04

.04

.07 

.07

.21

.19

.16

.16

.12

.11

.16

.15

.11

.13

.12

.15

.12

.10

.09

0.14

,25 

.13

.61

.66

.48

.28

.25

.32

.36

.48

.44

.47

.48

.44

.48

.52

.51

.49

.48

.47

.50

.52

.51

.38

0.47

a Not included for computation of weighted averages. b Represents 99 percent of runof
HUMBOLDT RIVER BASIN

HUMBOLDT RIVER NEAR RYE PATCH, NEV.

LOCATION. Below Rye Patch Dam 1,000 feet upstream from gaging station, and 2 miles northw

DRAINAGE AREA.--13,700 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: December 1951 to September 1955.

Water temperatures: December 1951 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 2,940 micromhos May 26; minimum 

Percent sodium: Maximum, 70 May 25-31,June 1-10;minimum, 64 July 21-28. 

EXTREMES, 1951-55. Specific conductance: Maximum daily, 4,010 micromhos Sept. 2, 1954; m

Sept. 10, 1952. 

Percent sodium: Maximum, 71 Sept. 1-5, 1954; minimum, 48 Aug. 11-20, Sept. 1-10, 11-20, 

REMARKS. Values reported for dissolved solids are sums of determined constituents. Recor

available in district office at Salt Lake City, Utah. Records of discharge for water y

WSP 1393.

Chemical analyses, water year October 1954 to September 19

Date 

of 

collection

May 25-31, 1955 .

July 11-20 .......

July 21-31, 

Aug. 1-3 .......

Total or weighted 

average .......

Runoff 

(acrefeet)

6,310 

5,730 

202

2,030 

5,190

al9,470

Silica 

(SiOJ 

Ppm

41 

42

51 

56

46

Equivalents per million

Calcium 

(Ca)

3.84 

3.. 59 

3.79

3.49 

3.04

3.54

Magnesium 

(Mg)

3.29 

2.96 

2.71

2.63 

2.47

2.88

Sodium 

(Na)

19.35 

17.44

14.13 

11.13

16.01

Potassium 

(K)

1.07 

1.02

.92

.79

0.97

Bicarbonate 

(HC03)

5.47 

5.62 

5.97

5.83 

5.57

5.59

Sulfate 

(SOJ

3.81 

3.52 

3.33

3.06 

2.54

3.31

Chloride 

(Cl)

18.76 

15.46 

14.24

12.18 

9.08

14.47

Fluoride 

(F)

Nitrate 

(NO,)

0.05 

.05

.04 

.06

0.05

Boron 

(B) 

ppm

1.8 

1.4

1.5 

1.3

1.5

a Represents 92 percent of runoff for water year October 1954 to September 1955.
PART 11. PACIFIC SLOPE BASINS IN CALIFORNIA

SAN JOAQUIN RIVER BASIN 

SAN JOAQUIN RIVER NEAR BIOLA, CALIF.

LOCATION.--At Skaggs bridge, 1.9 miles upstream from gaging station, and about 2.5 miles 

DRAINAGE AREA.--1,805 square miles (above gaging station).

RECORDS AVAILABLE. Chemical analyses: November 1952 to September 1955.

Water temperatures: November 1952 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 147 micromhos Feb.

Percent sodium: Maximum, 45 Aug. 21-31; minimum, 37 Feb. 21-28. 

EXTREMES, 1952-55. Specific conductance: Maximum daily, 170 micromhos Jan.

Percent sodium: Maximum, 49 Nov. 1-5, 7-10, 1952; minimum, 30 Jan. 3-13, 1953. 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of s

in district office at Sacramento, Calif. Records of discharge for water year October 

appreciable inflow between sampling point and gaging station except during periods of 

23; minimum 

1953; min

Chemical analyses, water year October 1954 to September 19

Date 

of 

collection

Oct. 1-10, 1954.. 

Oct. 11-20 ......

Oct. 21-31 ......

Nov. 1-10 .......

Nov. 11-20 ......

Nov. 21-25 ......

Nov. 26-30 ......

Dec. 1-10 .......

Dec. 11-20 ......

Dec. 21-31 ......

Jan. 1-10, 1955.. 

Jan. 11-20. ......

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

Runoff 

(acrefeet)

1,710 

2,240 

2,200 

2,160 

2,250 

1,710 

6,660

11,090 

3,060 

2,490 

2,240 

2,070 

1.830

Silica 

(Si02) 

ppm

11 

11 

11 

11 

12

12 

12 

13 

11 

11 

15

Equivalents per million

Calcium 

(Ca)

0.29 

.28 

.28 

.28 

.30 

.31 

.21

.24 

.31 

.33 

.32 

.35 

. 50

Magnesium 

(Mg)

0.10 

.10 

.11 

.10 

.09 

.11 

.04

.04 

.09 

.11 

.14 

.17 

.30

Sodium 

(Na)

0.32 

.28 

.29 

.29 

.29 

.30 

.18

.19 

.29 

.31 

.31 

.36 

. 57

Potassium 

(K)

0.04 

.04 

.03 

.03 

.03 

.03 

.03

.02 

.03 

.04 

.04 

.04 

.flfi

Bicarbonate 

(HC03)

0.59 

.48 

.56 

.54 

.56 

.59 

.34

.39 

.56 

.59 

.61 

.69 

97

Sulfate 

(S04)

0.04 

.12 

.04 

.04 

.04 

.05 

.03

.03 

.04 

.05 

.06 

.08 

14

Chloride 

(Cl)

0.11 

.10 

.11 

. 11 

.09 

.10 

.07

.07 

.10 

.11 

.14 

.15 

 > ).

Fluoride 

(F)

0.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.02 

ns

Nitrate 

(NOS)

0.01 

.01 

.02 

.02 

.02 

.02 

.02

.01 

.02 

.02 

.02 

.01 

f)4

Bor

(B

ppm

0.03 

.03 

.04 

.03 

.05

.06 

.03 

.00 

.03 

.02 

ru
SAN JOAQUIN RIVER BASIN Continued

SAN JOAQUIN RIVER NEAR BIOLA, CALIF. Continued

Chemical analyses, water year October 1954 to September 1955--Co

Date

of 

collection

Feb. 1-10, 1955.. 

Feb. 11-20 ......

Feb. 21-28 ......

Mar. 11-20......

Mar. 21-31......

Apr. 1-10 .......

Apr. 11-20 ......

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

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

May 11-20.......

May 21-31.......

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 .....

Total or 

weighted average*

Runoff 

(acrefeet)

1,350 

1,440 

1,090 

1,400 

1,270 

1,020

1,890 

1,750 

1,700 

1,850 

1,760 

2,230

1,840 

2,000 

2,270 

2,380 

2,230 

2,100

2,330 

2,330 

2,360 

1,880 

2,030 

1,720

85,950

Silica 

(Si02) 

ppm

14 

12 

13 

13 

12 

12

13 

10 

9.5 

8.9 

12 

10

12 

13 

9.5 

7.9 

10 

9.3

12 

12 

12 

12 

11 

12

bll

Equivalents per million

Calcium 

(Ca)

0.50 

.46 

.55 

.55 

.49 

.49

.35 

.38 

.39 

.34 

.36 

.39

.31 

.28 

.26 

.29 

.28 

.28

.30 

.28 

.30 

.30 

.32 

.31

0.31

Magnesium 

(Mg)

0.22 

.22 

.29 

.23 

.27 

.23

.17 

.06 

.09 

.14 

.18 

.07

.13 

.14 

.16 

.11 

.12 

.12

.08 

.09 

.08 

.09 

.09 

.12

0.12

Sodium 

(Na)

0.56 

.48 

.52 

.52 

.52 

.57

.39 

34 

.38 

.38 

.40 

.36

.36 

.34 

.31 

.30 

.31 

.31

.33 

.32 

.34 

.32 

.34 

.35

0.32

Potassium 

(K)

0.05 

.05 

.05 

.05 

.05 

.05

.04 

.04 

.05 

.05 

.04 

.03

.04 

.03 

.04 

.04 

.05 

.05

.04 

.04 

.04 

.04 

.04 

.03

0.04

Bicarbonate 

(HCOS)

0.93 

.90 

1.02 

1.02 

1.00 

.98

.70 

.62 

.67 

.67 

.70 

.61

.61 

.59 

.57 

.57 

.56 

.56

.56 

.56 

.56 

.56 

.61 

.64

0.59

Sulfate 

(SOJ

0.12 

.10 

.12 

.12 

.10 

.10

.07 

.06 

.07 

.05 

.09 

.06

.05 

.05 

.07 

.06 

.04 

.05

.04 

.04 

.04 

.04 

.06 

.06

0.06

Chloride 

(Cl)

0.21 

.21 

.23 

.25 

.22 

.23

.19 

.16 

.17 

.19 

.19 

.16

.16 

.14 

.12 

.11 

.16 

.16

.16 

.16 

.18 

.17 

.15 

.14

0.14

Fluoride 

(F)

0.03 

.01 

.02 

.01 

.01 

.01

.01 

.01 

.01 

.01 

.00 

.00

.00 

.00 

.01 

.01 

.01 

.01

.01 

.01 

.01 

.01 

.01 

.01

bo.or

Nitrate 

(NOS)

0.02 

.02 

.02 

.01 

.01 

.02

.01 

.01 

.02 

.01 

.01 

.01

.01 

.01 

.01 

.01 

.01 

.02

.02 

.01 

.02 

.01 

.01 

.00

0.01

Boro

(B) 

ppm

0.0

.0

.0

.0

.0

.1

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

bO.0

a Represents 100 percent of runoff for water year October 1954 to September 1955. 

b Represents 90 percent of runoff for water year October 1954 to September 1955.
SAN JOAQUIN RIVER BASIN Continued

SAN JOAQUIN RIVER NEAR VERNALIS, CALIF.

LOCATION. At gaging station in El Pescadero Grant, at Durham Ferry highway bridge, 3 m

miles northeast of Vernalis, San Joaquin County. 

DRAINAGE AREA. 14,010 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1955.

Water temperatures: March 1951 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 1,120 micromhos Aug. 5; minim

Percent sodium: Maximum, 53 Jan. 25-31; minimum, 46 Jan. 4-10, June 14-19. 

EXTREMES, 1951-55. Specific conductance: Maximum daily, 1,120 micromhos Aug. 5, 1955; 

Percent sodium: Maximum, 56 Jan. 21-31, 1954; minimum, 34 Apr. 1-10, May 1-10, 1952, 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

in district office at Sacramento, Calif. Records of discharge for water year October 

Chemical analyses, water year October 1954 to Septembe

Date 

of 

collection

Oct. 1-10, 1954. 

Oct. 11-16 .....

Oct. 17-20 .....

Oct. 21-31 .....

Nov. 1-10 .....

Nov. 11-20.....

Nov. 21-30 .... 

Dec. 1-10......

Dec. 11-20.....

Dec. 21-31.....

Jan. 1-2, 1955 .

Jan. 4-10 ......

Jan. 11, 13-18.. 

Jan. 12, 19-20 . 

Jan. 21-24 .....

Jan. 25-31 .....

Runoff 

(acrefeet)

16,740 

10,750 

9,420 

27,190 

24,690 

28,360 

29,400

32,670 

42,840 

36,020 

8,230 

7,970 

37,290 

38,780 

24,080 

30,900 

35,070

Silica

(sicg

ppm

35 

35 

27 

29 

29 

28 

27

25 

22 

26

20 

22

23

Equivalents per million

Calcium 

(Ca)

2.45 

2.35 

1.75 

1.80 

1.90 

1.80 

1.80

1.60 

1.30 

1.70 

1.70 

.75 

1.10 

1.25 

.90 

1.00 

1.45

Magnesium 

(Mg)

1.65 

1.85 

1.13 

1.24 

1.26 

1.20 

1.24

1.12 

.94 

1.06 

1.06 

.49 

.78 

.87 

.66 

.76 

1.03

Sodium 

(Na)

4.48 

4.35 

3.09 

3.30 

3.52 

3.22 

3.17

2.78 

2.17 

2.87 

2.96 

1.00 

1.65 

2.17 

1.44 

1.65 

2.87

Potassium 

(K)

0.11 

.13 

.11 

.10 

.10 

.10 

.09

.10 

.09 

.09

.08 

.09

.08 

.10

Bicarbonate 

(HCO,)

2.84 

2.80 

2.13 

2.05 

2.06 

2.05 

1.98

1.79 

1.57 

1.87

1.46 

1.74

1.41 

1.98

Sulfate 

(SO,)

1.27 

1.33 

.96 

1.00 

1.06 

.98 

1.00

.90 

.71 

.87

.56 

.71

.62 

1.02

Chloride 

(Cl)

4.23 

4.46 

2.90 

3.22 

3.41 

3.10 

3.16

2.74 

2.09 

2.85

1.58 

1.86

1.30 

2.23

Fluoride 

(F)

0.01 

.01 

.01 

.01 

.01 

.01 

.01

.01 

.02 

.01

.01 

.02

.02

Nitrate 

(NO,)

0.06 

.02 

.02 

.03 

.03 

.03 

.04

.04 

.05 

.05

.04 

.06

.05 

.05

Bo

(B

pp

0.

.

.

.

.

.

.

.

.

.

.

.

.

.2
SAN JOAQUIN RIVER BASIN Continued

SAN JOAQUIN RIVER NEAR VERNALIS, CALIF. Contin

Chemical analyses, water year October 1954 to September 1955-

Date 

of 

collection

Feb. 1-10, 1955 . 

Feb. 11-20......

Feb. 21-28......

Mar. 1-10 ......

Mar. 11-20 .....

Apr. 1-10 ......

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

May 11-20 ......

May 21-25. ......

May 26-31. ......

June 1-2, 8-13 ..

June 14-19 ......

July 1-10. .......

July 11-20. ......

July 21-31.......

Aug. 11-20......

Sept. 1-10 ......

Sept. 11-20 .....

Sept. 21-30 .....

Total or weighted

Runoff 

(acrefeet)

43,800 

50, 560 

41,770 

42,740 

37,770 

15,470

10,880 

15,460 

28,200 

24,460 

14,780 

6,590 

24,910

44,550 

16,420 

14,250 

13,780 

9,870 

8,150 

7,580

7,380 

8,030 

11,080 

10,200 

12,480 

13,590

975,100

Silica 

(SiO,) 

ppm

24 

20 

20 

20 

21 

30

31 

28 

27 

29 

28 

31 

19

17 

22 

29 

29 

33 

35 

40

37 

33 

33 

35 

38 

37

b25

Equivalents per million

Calcium 

(Ca)

1.60 

1.35 

1.20 

1.40 

1.50 

2.50

2.45 

2.30 

1.85 

1.95 

2.54 

2.64 

.85

.60 

1.20 

1.25 

2.25 

2.54 

2.50 

2.64

2.59 

2.50 

2.40 

2.50 

2,40 

2.54

1.60'

Magnesium 

(Mg)

1.16 

1.01 

1.04 

1.04 

1.02 

1.66

1.75 

1.66 

1.11 

1.31 

1.60 

1.80 

.55

.42 

.76 

.93 

1.41 

1.62 

1.70 

1.76

1.77 

1.72 

1.66 

1.62 

1.64 

1.72

1.15

Sodium 

(Na)

2.96 

2.57 

2.26 

2.48 

2.57 

4.17

4.30 

3.96 

2.96 

3.48 

4.61 

4.96 

1.35

1.04 

1.96 

1.96 

3.74 

4.17 

4.17 

4.39

4.39 

4.39 

4.13 

4.44 

4.39 

4.61

2.83

Potassium 

(K)

0.08 

.06 

.06 

.07 

.08 

.15

.15 

.15 

.12 

.10 

.15 

.21 

.06

.04 

.08 

.08 

.13 

.13 

.13 

.13

.13 

.13 

.13 

.14 

.13 

.13

cO. 09

Bicarbonate 

(HCO,)

1.98 

1.57 

1.43 

1.70 

1.62 

2.47

2.54 

2.62 

2.20 

2.28 

2.67 

2.82 

1.03

.84 

1.46 

1.57 

2.56 

2.79 

2.84 

2.85

2.82 

2.85 

2.90 

2.95 

3.00 

3.05

cl.92

Sulfate 

(SOJ

1.17 

1.19 

1.02 

1.02 

.96 

1.15

1.00 

1.06 

.87 

1.04 

1.23 

1.17 

.33

.21 

.54 

.48 

.92 

1.06 

1.02 

.92

.94 

1.06 

1.06 

1 15 

1.17 

1.31

cO.92

Chloride 

(Cl)

2.57 

2.20 

1.97 

2.26 

2.54 

4.79

5.08 

4.40 

2.90 

3.38 

4.68 

5.58 

1.41

1.04 

1.97 

2.09 

3.95 

4.63 

4.65 

5.16

5.13 

4.79 

4.43 

4.51 

4.31 

4.60

C2.79

Fluoride 

(F)

0.02 

.01 

.01 

.01 

.01 

.01

.01 

.01 

.02 

.01 

.01 

.02 

.01

.01 

.01 

.01 

.01 

.02 

.02 

.02

.02 

.02 

.02 

.01 

.01 

.01

bO.Ol

Nitrate 

(NOJ

0.05 

.03 

.02 

.02 

.02 

.06

.06 

.06 

.04 

.04 

.02 

.05 

.02

.01 

.02 

.02 

.03 

.05 

.04 

.09

.08 

.05 

.07 

.04 

.08 

.08

cO.04

Boro

(B) 

ppm

0.2

.2

.2

.1

.1

.2

.2

.2

.2

.2

.2

.3

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

.1

.2

.2

cO.2

a Represents 100 percent.of runoff for water year October 1954 to September 1955. 

b Represents 93 percent of runoff for water year October 1954 to September 1955.

c Represents 96 percent of 
SAN JOAQUIN RIVER BASIN--Continued 

MOKELUMNE RIVER AT WOODBRIDGE, CALIF.

LOCATION. At dam of Woodbridge Irrigation District, San Joaquin County, 0.4 mile upstrea

DRAINAGE AREA.--644 square miles (above gaging station).

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1955.

Water temperatures: March 1951 to September 1955.

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 91.8 micromhos Apr. 30; minimum 

EXTREMES, 1951-55. Specific conductance: Maximum daily, 202 micromhos Dec. 15, 1952; mi

Percent sodium (1951-54): Maximum, 33 Nov. 21-30, 1952; minimum, 10 Dec. 22-23, 1952.

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of s

able in district office at Sacramento, Calif. Records of discharge for water year Octo

 Chemical analyses, water year October 1954 to September 19

Date 

of 

collection

Oct. 1-10, 1954. 

Oct. 11-20......

Oct. 21-31......

Nov. 1-10 ......

Nov. 11-20 .....

Nov. 21-30......

Dec. 1-10 ......

Dec. 11. ........

Dec. 12-20 .....

Dec. 21-31 .....

Jan. 1-10, 1955.

Jan. 21-31 .....

Feb. 1-10 ......

Feb. 11-20 .....

Feb. 21-28 .....

Mar. 1-10 .....

Mar. 11-20 .... 

Mar. 21-31.....

Runoff 

(acrefeet)

5,030 

5,720 

6, -840 

7,530 

11,440 

10,720

11,630

9,820 

11,990 

12.040 

13,890 

12,980

12,570 

11,220 

7,900 

5,190 

3,870 

522

Silica 

(SiO.,) 

ppm

Equivalents per million

Calcium 

(Ca)

0.20 

.20 

.20 

.20 

.20 

.20

.24 

.33 

.24 

.21 

.24 

.26 

.26

.26 

.26 

.27 

.30 

.32 

.32

Magnesium 

(Mg)

0.08 

.08 

.06 

.06 

.06 

.06

.08 

.19 

.10 

.09 

.11 

.18 

.14

.13 

.14 

.17 

.18 

.18 

.18

Sodium 

(Na)

0.10 

.08 

.08 

.08 

.08 

.08

.09 

.14 

.10 

.10 

.12 

.13 

.14

.14 

.14 

.14 

.16 

.17 

.16

Potassium 

(K)

Bicarbonate 

(HC03)

0.41 

.41 

.44 

.46 

.49 

.48

Sulfate 

(SOJ

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NOs)

Boro

(B) 

ppm
SAN JOAQUIN RIVER BASIN Continued

MOKELUMNE RIVER AT WOODBRIDGE, CALIF. Continue

Chemical analyses, water year October 1954 to September 1955--C

Date 

of 

collection

Apr. 1-10, 1955.. 

Apr. 11-20 ......

Apr. 21-30 ......

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

May 11-20 ......

May 21-31.......

June 21-30 ......

July 1-10........

July 21-31 .......

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

Ancr 1ft ^1

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

Sept. 11-20......

Sept. 21-30......

Total or 

weighted average*

Runoff 

(acrefeet)

280 

234 

2,460 

1,950 

893 

377

331 

234 

242 

383 

353

345 

470 

547 

2,090 

3,180

175,300

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

0.28 

.31 

.36 

.32 

.29 

.33

.47 

.30 

.35 

.30 

.31

.32 

.29 

.34 

.31 

.29

0.25

Magnesium 

(Mg)

0.16 

.23 

.26 

.22 

.23 

.09

.01 

.16 

.09 

.13 

.11

.12 

.11 

.08 

.08 

.07

0.12

Sodium 

(Na)

0.15 

.17 

.18 

.16 

.17 

.17

.17 

.17 

.17 

.17 

.16

.15 

.15 

.17 

.14 

.14

0.11

Potassium 

(K)

Bicarbonate 

(HCOS)

0.46 

.49 

.56 

.51 

.49 

.49

.49 

.48 

.46 

.46 

.46

.49 

.46 

.49 

.44 

.43

__

Sulfate 

(SOJ

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

Boro

(B) 

ppm

a Represents 100 percent of runoff for water year October 1954 to September 1955. 

b Represents 99 percent of runoff for water year October 1954 to September 1955.
SACRAMENTO RIVER BASIN

SACRAMENTO RIVER AT KNIGHTS LANDING, CALIF

LOCATION.--At Southern Pacific Railroad bridge, at Knights Landing, Yolo County, just dow

upstream from Sacramento. 

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1955.

Water temperatures: March 1951 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 406 micromhos May 29; minimum d

Percent sodium: Maximum, 44 May 28-30; minimum, 20 Nov. 14, 16-19. 

EXTREMES, 1951-55.--Specific conductance: Maximum daily, 447 micromhos Sept. 9, 1952; mi

Percent sodium: Maximum, 46 May 12, 19, 21, 23-29, 1953; minimum, 15 Dec. 21-23, 29, 1

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of s

in district office at Sacramento, Calif. Records of discharge for water year October 

Considerable inflow during irrigation season of irrigation waste water from drainage c

Mixing not complete at sampling site.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954.. 

Oct. 11-20......

Oct. 21-31 ......

Nov. 1-10.......

Nov. 11-13,15,20 

Nov. 14, 16-19 .. 

Nov. 21-30......

Dec . 1 ..........

rv>r 9 10

Dec. 11,13,15-16 

Dec. 12,14,17-20 

Dec. 21-24, 27-28 

Dec. 25-26, 29-31

Jan. 1-10, 1955.. 

Jan. 11-20......

Jan. 21-22,25, 

29-30 .........

Jan. 23-24,26-28, 

31 ............

Runoff 

(acrefeet)

147,500 

141,800 

139,800 

128,000 

107,900 

175,500 

178,600

13,980 

325,100 

136,300 

168, 000 

125,800 

98,420

234,200 

251, 100

150,300 

157.700

Silica 

(Si02) 

ppm

26 

26 

25 

27 

24 

20 

27

21 

21 

27 

27 

24

26 

24

Equivalents per million

Calcium 

(Ca)

0.75 

.70' 

.65 

.70 

.70 

.47 

.80

.80 

.55 

.55 

.75 

.80 

.65

.70 

.70

.70 

.80

Magnesium 

(Mg)

0.75 

.62 

.60 

.58 

.55 

.37 

.65

.64 

.38 

.44 

.76 

.74 

.57

.62 

.62

.52 

.68

Sodium 

(Na)

0.70 

.48 

.48 

.44 

.48 

.21 

.61

.61 

.26 

.27 

.65 

.70 

.48

.48 

.57

.48 

.70

Potassium 

(K)

0.02 

.04 

.04 

.04 

.04 

.03 

.04

.03 

.04 

.05 

.04 

.03

.03 

.03

.04 

.04

Bicarbonate 

(HCOS)

1.69 

1.44 

1.36 

1.43 

1.33 

.77 

1.52

.92 

1.00 

1.51 

1.59 

1.25

1.38 

1.34

1.26 

1.51

Sulfate 

(SOJ

0.29 

.20 

.23 

.19 

.23 

.13 

.31

.16 

.16 

.40 

.35 

.23

.25 

.31

.25 

.35

Chloride 

(Cl)

0.27 

.20 

.21 

.20 

.20 

.13 

.28

.14 

.16 

.31 

.31 

.20

.23 

.28

.20 

.34

Fluoride 

(F)

0.01 

.01 

.01 

.01 

.01 

.01 

.01

.01 

.01 

.01 

.01 

.01

.01 

.01

Nitrate 

(NO,)

0.01 

.01 

.02 

.00 

.02 

.07 

.01

.02 

.02 

.01 

.01 

.01

.01 

.01

.01 

.02

Bor

(B

ppm

0.1

.0

.1

.1

.1

.0

.1

.0

.1

.1

.1

.0

.1

.1

.0

.0
SACRAMENTO RIVER BASIN--Continued

SACRAMENTO RIVER AT KNIGHTS LANDING, CALIF.--Co

Chemical analyses, water year October 1954 to September 1955-

Date 

of 

collection

Feb. 1-10, 1955 . . 

Feb. 11-20.......

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

Mar. 1-10 .......

Mar. 11-20. ......

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

Apr. 21.... ......

Apr. 22-30.......

May 1 ...........

May 2-10. ........

May 21-27, 31. ... 

May 28-30 .......

June 7-12 ........

June 21-30 .......

July 1-10 ........

July 21-31 .......

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

Aug. 21-25.......

Aue. 29-31 .......

Runoff 

(acrefeet)

193,800 

167,700 

135,600

149,700 

136,400 

121,300 

104, 800 

88,460 

12,600 

191,600

17,490 

148, 100 

146,800 

112,200 

33, 060

62,880 

60, 600 

89,610 

121,500 

144,300 

141,700 

155,400

142,700 

142,000 

62,860 

36,360 

37.450

Silica 

(Si02) 

ppm

28 

28 

28

28 

29 

27 

29 

27

24

25 

25 

25 

25

26 

28 

29 

28 

28 

28 

27

29 

29 

28 

26 

28

Equivalents per million

Calcium 

(Ca)

0.85 

.80 

.75

.80 

.80 

.75 

.70 

.70 

.55 

.70

.65 

.80 

.85 

.85 

1.05

.80 

.75 

.80 

.75 

.80 

.70 

.70

.70 

.75 

.80 

1.20 

.90

Magnesium 

(Mg)

0.71 

.74 

.65

.74 

.66 

.69 

.64 

.68 

.47 

.60

.57 

.72 

.69 

.79 

1.15

.82 

.61 

.76 

.65 

.76 

.62 

.68

.70 

.69 

.68 

1.10 

.90

Sodium 

(Na)

0.74 

.65 

.57

.61 

.52 

.61 

.48 

.57 

.31 

.65

.52 

.83 

.87 

.96 

1.74

.91 

.65 

1.00 

.78 

1.04 

.74 

.78

.78 

.78 

.83 

1.74 

1.22

Potassium 

(K)

0.03 

.04 

.03

.04 

.04 

.04 

.04 

.04

.05

.05 

.04 

.05 

.05

.06 

.04 

.04 

.04 

.04 

.04 

.05

.05 

.05 

.04 

.05 

.04

Bicarbonate 

(HC03)

1.57 

1.61 

1.52

1.62 

1.57 

1.57 

1.49 

1.52 

1.11 

1.34

1.28 

1.59 

1.69 

1.77 

2.46

1.80 

1.56 

1.82 

1.64 

1.88 

1.62 

1.67

1.64 

1.72 

1.77 

2.72 

2.13

Sulfate 

(SOJ

0.38 

.33 

.23

.29 

.25 

.25 

.19 

.23

.42

.40 

.44 

.46 

.90

.46 

.31 

.48 

.35 

.48 

.31 

.31

.31 

.31 

.33

.69 

.46

Chloride 

(Cl)

0.34 

.31

.24

.28 

.25 

.25 

.21 

.24

.27

.34 

.34 

.37

.70

.34 

.21 

.37 

.28 

.37 

.23 

.25

.25 

.25 

.27 

.56 

.37

Fluoride 

(F)

0.01 

.00 

.00

.00 

.00 

.00 

.01 

.01

.02

.01 

.01 

.01 

.01

.01 

.01 

.01 

.01 

.01 

.01 

.01

.01 

.01 

.01 

.02 

.01

Nitrate 

(NO,)

0.01 

.01 

.00

.01 

.00 

.00 

.01 

.01

.02

.01 

.01 

.01 

.04

.01 

.01 

.01 

.01 

.01 

.01 

.01

.01 

.01 

.01 

.01 

.01

Bor

(B

pp

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.1

.0

.1

.0

.1

.1

.1

.1

.1

.1

.0

.1

.1

.2

.2
PACIFIC SLOPE BASINS IN CALIFORNIA 161

> l-t I*

\&£

: | s

! l"l

 a 01 01

 H ^H 1M

"a "a "a

, ' ^ M IT" O rt

« K K 

rt J3 o
SACRAMENTO RIVER BASIN Continued

FEATHER RIVER AT NICOLAUS, CALIF.

LOCATION. At highway bridge at Nicolaus, Sutter County, 0.4 mile upstream from gaging s

River. 

RECORDS AVAILABLE. March 1951 to September 1955.

Water temperatures: March 1951 to September 1955. 

EXTREMES. 1954-55. Specific conductance: Maximum daily, 176 micromhos Sept. 13; minimum 

245 micromhos June 21, 1954; m

1952; minimum, 8 June 21-30, 195

Maximum daily,

EXTREMES, 1951-55. Specific conductance: Maximum daily, 

Percent sodium (1951-54): Maximum, 27 Dec. 1-2, 4, 7,

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

in district office at Sacramento, Calif. Records of discharge for water year October 

Chemical analyses, water year October 1954 to September 19

Date 

of 

collection

Oct. 1-10, 1954. 

rw»t 1 1 9n

rw»t 91 ^i

Nov. 1-10 .....

Nov. 11-20

Nov. 21-30.

Dec 1 10

Dec 11 20

Dec. 21-31 .... 

Jan. 1-10, 1955. 

Jan. 11-20 ,

Jan. 21-31

Feb. 1-10 .....

Feb. 11-20.....

Feb. 21-28.....

Mar. 1-10 .....

Mar. 11-20.....

Mar. 21-31.....

Runoff 

(acrefeet)

44,970 

50, 500 

57,220 

53,260 

98, 740 

78,290

140,000 

115,400 

85,610 

122,600 

119,900 

88,460

67,640 

65,850 

69,020 

73,390 

106,600 

108,100

Silica 

(SiOa) 

ppm

-

Equivalents per million

Calcium 

(Ca)

.60 

.60 

.60 

.55 

.55 

.60

.60 

.60 

.55 

.55 

.55 

.60

.60 

.65 

.60 

.60 

.55 

.55

Magnesium 

(Mg)

.46 

.39 

.40 

.42 

.36 

.36

.32 

.29 

.40 

.35 

.35 

.38

.44 

.39 

.36 

.40 

.37 

.35

Sodium 

(Na)

.24 

.22 

.21 

.21 

.20 

.20

.20 

.19 

.20 

.18 

.19 

.21

.22 

.22 

.18 

.20 

.18 

.19

Potassium 

(K)

Bicarbonate 

(HCO,)

1.08 

1.05 

.95 

1.02 

1.00 

.97

Sulfate 

(SOJ

--

Chloride 

(Cl)

--

Fluoride 

(F)

--

Nitrate 

(NO,)

--

Boro

(B) 

ppm
Apr. 1-10, 1955.. 

Apr. 11-20......

Apr. 21-30 ......

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

May 11-20.......

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......

Total or 

weighted average a

99,010 

79,240

153,800

182,900

202,400

171,900

89,810

44,770

12,710

9,680

8,070

8,450

7,810

6,900

8,120

8,800

15,900

18,670

2,675,000

20

__

.48 

.45

.47

.47

.36

.38

.43

.47

.60

.60

.60

.65

.70

.70

.70

.80

.75

.70

0.55

.34 

.35

.37

.31

.28

.20

.19

.29

.56

.42

.40

.43

.46

.48

sn

.52

.57

.50

0.35

.15 

.15

.15

.14

.12

.11

.14

.16

.24

.23

.20

.20

.23

.24

.26

28

.31

.29

0.17

.05

.84 

.84

.82

.82

.61

.62

.69

.85

1.10

1.10

1.08

1.11

1.18

1.23

1.39

1.44

1.36

--

0.08

--

0.10

--

0.01 0.010.0

a Represents 100 runoff for water year October 1954 to September 1955.
SACRAMENTO RIVER BASIN--Continued

AMERICAN RIVER AT FAIR OAKS, CALIF.

LOCATION (revised). At old highway bridge downstream from gaging station at Fair Oaks, S

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 

Water temperatures: March 1951 to September 1955.

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 103 micromhos Jan. 22, 23; mini

EXTREMES, 1951-55. Specific conductance: Maximum daily, 112 micromhos Aug. 28, 1951; mi

Percent sodium (1951-54): Maximum, 28 June 1-10, 1953; minimum, 8 Jan. 21-31, 1953. 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of s

in district office at Sacramento, Calif. Records of discharge for water year October 

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954.. 

Oct. 11-20 ......

Oct. 21-31 ......

Nov. 1-10 .......

Nov. 11-20 ......

Nov. 21-30 ......

Dec. 1-2,4-5,8-9. 

Dec. 3, 6-7, 10.. 

Dec. 11-20 ......

Dec. 21-31 ......

Jan. 1-10, 1955.. 

Jan. 11-20 ......

Jan. 21-31 ......

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

Feb. 11-20 .....

Feb. 21-28 ......

Mar. 1-10. ......

Mar. 11-20.......

Mar. 21-31.. ....

Runoff 

(acrefeet)

7,790 

8,440 

10,330 

10,380 

21,550 

14,430

37,040 

36,890 

33,720 

24,510 

70,650 

48,340 

45,100

36,670 

39,030 

25,980 

40.620 

50,200 

10.850

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

0.39 

.39 

.44 

.37 

.44 

.40

.39 

.44 

.44 

.43 

.39 

.42 

.48

.45 

.42 

.39 

.44 

.37 

.40

Magnesium 

(Mg)

0.17 

.16 

.16 

.17 

.19 

.17

.20 

.26 

.27 

.25 

.26 

.30 

.32

.29 

.28 

.27 

.32 

.23 

.26

Sodium 

(Na)

0.14 

.13 

.13 

.12 

.14 

.12

.12

.14 

.13 

.14 

.14 

.15 

.17

.17 

.15 

.15 

.16 

.13 

.14

Potassium 

(K)

Bicarbonate 

(HCOS)

0.70 

.67 

.74 

.61 

.66

Sulfate 

(SOJ

Chloride 

(Cl)

Fluoride 

(F)

Nitrate 

(NO,)

--

Bo

(B

pp
Apr: 1-10, 1955.. 

Apr. 11-20 ......

May 1-10 .......

May 21 -31 ......

July 1-10........

July 21-31.......

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

Aug. 11-20 ......

Aug. 21-31 ......

Sept. 11-20......

Sept. 21-30.. ....

Total or weighted 

average a 

5,410 

3,730

56,890

89,510

58,310

112,600

115,700

67,480

41,020

26,570

36,040

46,790

42,190

39,850

50,640

40,460

11,830

10,610

1,428,000

12

__

.40 

.39

.40

.33

.25

.25

.25

.22

.22

.25

.23

.24

.23

.25

.27

.30

.35

.38

0.33

.22 

.21

.14

.15

.25

.17

.15

.14

.10

.07

.09

.08

1 1

.13

.13

.16

.15

.14

0.19

.14 

.14

.12

.10

.11

.10

.09

.09

.08

.08

.08

.08

.09

.10

.10

.10

.10

.10

0.11

.03

-.

.62 

.59

.51

.51

.49

.41

.39

.39

.39

.38

.38

.39

.41

.41

.46

4Q

.52

.56

bO.48

.04

--

.06

--

.01

--

.01

.00

.01

--

.

-

a Represents 100 percent of runoff for water year October 1954 to September 1955. 

b Represents 72 percent of runoff for water year October 1954 to September 1955.
PART 12. PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLU

COLUMBIA RIVER MAIN STEM 

COLUMBIA RIVER AT INTERNATIONAL BOUNDARY

LOCATION. At cableway 2.2 miles downstream from gaging station, which is 0.5 miles down

miles upstream from Northport, Stevens County, Washington. 

DRAINAGE AREA. 59,700 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: February 1910 to January 1911, November 1951 to S

Water temperatures: November 1951 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 183 micromhos Mar. 3, 5, 28, 30

Aug. 5, 8, 9.

Percent sodium: Maximum, 8 Apr. 1-11; minimum, 4 Oct. 1-10, 11-20, 21-31. 

EXTREMES, 1951-55. Specific conductance: Maximum daily, 190 micromhos Mar. 10, 1953; mi

8, 9, 1955.

Percent sodium: Maximum, 8 Apr. 1-11, 1955; minimum, 3 July 21-31, Aug. 1-10, 11-20, 1

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of s

in district office at Portland, Oreg. Records of discharge for water year October 195

Chemical analyses, water year October 1954 to September 1

Date 

of 

collection

Oct. 1-10, 1954 . . . 

Oct. 11-20........

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

Nov. 1-10 ........

Nov. 11-20 .......

Nov. 21-30 .......

Dec. 1-10 ........

Dec. 11-20 .......

Dec. 21-31 .......

Jan. 1-10, 1955 . . . 

Jan. 11-20........

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

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

Feb. 11-19 .......

Feb. 20-28 .......

Runoff 

(acrefeet)

1,236,000 

1, 182, 000 

1, 279, 000 

1,094,000 

1, 287, 000 

1, 304, 000

1,191,000 

1,077,000 

1,030,000 

841,400 

852, 300 

917, 400

830, 100 

741,400 

711.900

Silica 

(Si02) 

ppm

4.4 

5.2 

4.8 

4.9 

5.6 

6.4

5.0 

5.2 

6.3 

6.8 

7.4 

7.0

6.9 

6.2 

6.2

Equivalents per million

Calcium 

(Ca)

1.05 

1.05 

1.10 

1.05 

1.05 

1.05

1.05 

1.10 

1 15 

1.20 

1.20 

1.20

1.20 

1.20 

1.20

Magnesium 

(Mg)

0.42 

.41 

.40 

.40 

.40 

.39

.40 

.40 

.44 

.44 

.45 

.47

.47 

.46 

.46

Sodium 

(Na)

0.06 

.06 

.06 

.08 

.08 

.08

.08' 

.08 

.10 

.10 

.10 

.10

.10 

.09 

.09

Potassium 

(K)

0.02 

.02 

.03 

.02 

.02 

.02

.02 

.02 

.03 

.03 

.03 

.03

.03 

.03 

.03

Bicarbonate 

(HCOS)

1.20 

1.21 

1.23 

1.28 

1.30 

1.28

1.26 

1.30 

1.48 

1.44 

1.48 

1.48

1.48 

1.39 

1.39

Sulfate 

(SOJ

0.29 

.27 

.29 

.29 

.27 

.27

.29 

.29 

.33 

.35 

.35 

.35

.33 

.33 

.33

Chloride 

(Cl)

0.03 

.02 

.03 

.04 

.02 

.03

.04 

.03 

.03 

.03 

.03 

.03

.03 

.03 

.02

Fluoride 

(F)

Nitrate 

(NO,)

0.02 

.01 

.01 

.02 

.01 

.02

.02 

.02 

.01 

.01 

.01 

.01

.01 

.01 

.01

Boro

(B) 

ppm

0.03 

.00

.00 

.00

.00
Mar. 1-10, 1955.. 

Mar. 11-20 ......

Mar. 21-31 ......

Apr. 1-11........

Apr. 12-20 ......

Apr. 21-30 ......

May 1-16 ........

May 17-31 .......

June 1-10 ........

June 11-20 .......

June 21-30 .......

July 1-15.........

July 16-31 .......

Aug. 1-13........

Aug. 14-31.......

Sept. 1-30 .......

Total or weighted 

average ........

675,400 

776, 300

930, 000

1,271,000

920, 300

1,059,000

2,095,000

4,072,000

3, 834, 000

5,934,000

7, 393, 000

9,676,000

8, 793, 000

4,432,000

3,672,000

4,245,000

75, 350, 000

7.2 

6.8

7.0

7.4

8.3

8.2

7.1

7.1

6.9

6.3

5.9

6.4

4 9

8.1

6.7

5.8

6.3

1.25 

1.20

1.25

1.25

1.20

1.15

1.05

1.05

1.00

.95

.95

.95

.90

on

.95

1.00

1.00

.48 

.48

.49

.37

.38

.35

.37

.34

.32

.37

.40

.30

.34

.33

.31

.34

0.36

.10 

.09

.10

.14

.10

.10

.09

.09

.10

.10

.07

.07

.07

.07

.07

.07

0.08

.03 

.03

.03

.03

.03

.03

no

.02

.04

.03

HQ

.03

no

HQ

.04

.04

0.03

1.44 

1.43

1.48

1.46

1.38

1.34

1.28

1.20

1.20

1.18

1.11

1.11

1.08

1.08

1.15

1.21

.35 

.33

.33

.31

.33

.29

97

.25

.23

.23

91

.19

1 Q

91

9?

.25

0.25

.05 

.03

.05

.01

.02

.01

.01

.01

.02

.01

.01

.01

.01

.01

.01

.01

0.01

.01 

.01

.02

.02

.02

.01

.01

.01

.02

.01

.01

.02

n9

(19

.02

.01

0.01

.0

.0

.0

.0

.0

.0

.0

-
COLUMBIA RIVER MAIN STEM Continued

COLUMBIA RIVER AT GRAND COULEE DAM, WASH.

LOCATION. At grand Coulee Dam, Grant-Okanogan County line, 2,500 feet upstream from gagin

Nespelem River.

DRAINAGE AREA.--74,100 square miles (above gaging station). 

RECORDS AVAILABLE. Chemical analyses: November 1950 to September 1955.

Water temperatures: November 1950 to September 1955.

EXTREMES, 1954-55. Specific conductance: Maximum daily, 193 micromhos Apr. 24, 25; minim

EXTREMES, 1950-55.--Specific conductance: Maximum daily, 193 micromhos Apr. 24, 25, 1955; 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of sp

district office at Portland, Oreg. Records of discharge for water year October 1954 to 

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954.. 

Oct. 11-20. ......

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

Nov. 1-10 .......

Nov. 11-20.......

Nov. 21-30 ......

Dec 1-10

Dec. 11-20 ......

T"War 91 31

Jan. 1-10, 1955. . 

Jan. 11-20 ......

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

Feb. 11-20 ......

Runoff 

(acrefeet)

1,343,000 

1,306,000 

1,388,000 

1,298,000 

1,188,000 

1,388,000

1,340,000 

1,253,000 

1,360,000 

1,165,000 

1,309,000 

1,419,000

1,374,000 

1,367,000 

1,241,000

Silica 

(Si02) 

ppm

4.7

4.9

4.5

6.7

7.5

Equivalents per million

Calcium 

(Ca)

1.05

1.05

1.15

1.10

1.10

Magnesium 

(Mg)

0.33

.32

.23

.34

.34

Sodium 

(Na)

0.06

.07

.07

.10

.09

Potassium 

(K)

-

--

--

-

-

Bicarbonate 

(HCO,)

1.21

1.18

1.21

1.26

1.25

Sulfate 

(SOJ

0.23

.25

.29

.27

.27

Chloride 

(Cl)

0.03

.03

.03

.04

.05

Fluoride 

(F)

Nitrate 

(NO,)

0.02 

.02

.02 

.02

.02

Bor

(B

ppm

0.0

.0

.0
Mar. 1-10, 1955 

Mar. 11-20.....

Mar. 21-31 ....

Apr. 11-20.....

Apr. 21-30 ....

May 1-10....... 

May 11-20 .....

May 21-31

June 11-20 .....

July 11-20 .....

July 21-31 

Aug. 1-10......

Aug. 11-20.....

Aug. 21-31

Sept. 1-10 

Sept. 11-20 .... 

Sept. 21-30 .... 

Total or weighted 

average ......

1,601,000 

1,579,000 

1,690,000

1,416 000 

1,414,000 

1,426,000 

1,405,000 

1,365,000 

1,861,000

4,141,000 

5,739,000 

7,418,000 

6,603,000 

6,124,000 

5,733,000

3,668,000 

2,467,000 

2,086,000 

1,485,000 

1,426,000 

1,402,000

81,790,000

8.8 

8.8

8.9

10

11

7.4

8.7

5.3

1.20 

1.20 

1.30

1.25

1.10

.95

.90

.90

.90

.38 

.34 

.36

.43

.42

.31

.30

.31

.36

.09 

.10 

.16

.15

.14

.11

.08

.08

.06

--

--

--

--

--

0.03

.03

1.33 

1.36 

1.41

1. 51

1.39

1.18

1.13

1.15

1.08

.33 

.33

.35

.31

.23

.20

.19

.20

.06 

.04

.03

.03

.02

.01

.01

.01

.02 

.02

.02 

.01

.01 

.01

.01 

.01

_.

.0

.0

.0

.0

.0

_
YAKIMA RIVER BASIN

YAKIMA RIVER AT KIONA WASH.

mi

LOCATION. --At highway bridge downstream from gaging station at Kiona, Benton County,

25 miles upstream from mouth. 

DRAINAGE AREA. --5, 600 square miles, approximately. 

RECORDS AVAILABLE. --Chemical analyses: December 1952 to September 1955.

Water temperatures: December 1952 to September 1955. 

EXTREMES 1954-55 Specific conductance: Maximum daily, 387 micromhos Sept. 29; minimum 

Percent sodium: Maximum, 29 Oct. 1-10, Nov. 1-10; minimum, 23 May 5-6, 9-10 14-15 21-

EXTREMES, 1952-55 . -Specif ic conductance: Maximum daily, 387 micromhos Sept. 29, 1955; mi

Percent sodium: Maximum, 29 for several periods; minimum, 23 for several periods. 

REMARKS. -Values reported for dissolved solids are residues on evaporation. Records of sp

in district office at Portland, Oreg. Records of discharge for water year October 1954 

Chemical analyses, water year October 1954 to September 1

Date 

.of 

collection

Oct. 1-10, 1954.. 

Oct. 11-20 ......

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

Nov. 1-10 ......

Dec. 1-ia.......

Dec. 14-31 ......

Jan. 1-10, 1955. .

Feb. 1-9, 19-28.. 

Feb. 10-18 ......

Mar. 1-10 ......

Mar. 11-20......

Mar. 21-31......

Runoff 

(acrefeet)

58,180 

55,000 

85,050 

66,210 

58,160 

72,990

80,330 

81,540 

47,700 

43,060 

46,020

78,860 

56,290 

35,460 

34,650 

45. 520

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

1.35 

1.35 

1.10 

1.10 

1.20 

1.00

1.15 

1.15 

1.15 

1.25 

1.20

1.15 

.90 

1.20 

1.25 

1.10

Magnesium 

(Mg)

0.72 

.76 

.67 

.63 

.69 

.58

.71 

.72 

.61 

.62 

.69

.68 

.50 

.77 

.72 

.60

Sodium 

(Na)

0.83 

.83 

.70 

.70 

.74 

.61

.65 

.70 

.65 

.10 

.70

.70 

.48 

.74 

.65 

.61

Potassium 

(K)

Bicarbonate 

(HCO,)

2.44 

2.52 

2.08 

2.06 

2.23 

1.82

2.06 

1.77 

2.02 

2.13 

2.15

2.10 

1.56 

2.21 

2.15 

1.93

Sulfate 

(SOJ

0.35 

.35 

.29 

.31 

.33 

.25

.31 

.33 

.31 

.33 

.33

.31 

.21 

.33 

.31 

.27

Chloride 

(Cl)

0.17 

.16 

.16 

.16 

.16 

.13

.15 

.16 

.17 

.17 

.18

.18 

.13 

.18 

.17 

.14

Fluoride 

(F)

Nitrate 

(NOJ

0.03 

.03 

.03 

.02 

.03 

.03

.04 

.04 

.03 

.04 

.04

.03 

.03 

.04 

.03 

.04

Boro

(B) 

ppm

0.0

.0

.0

.0

.0

.0
Apr. 1-10, 1955 . 

Apr. 11-201......

May 1-3, 17-19, 

27-30..........

^lay 4, 7-8, 11-13, 

16, 20, 26, 31.. 

May 5-6, 9-10, 14- 

15, 21-25 ......

June 1-6, 22, 29-30 

June 7-9,18-21, 23, 

27-28..........

June 10-17, 24-26

July 11-20 ......

Aug. 11-20 ......

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

Sept. 11-20 .....

Sept. 21-30.. ....

Total or 

weighted average

45,900

33,360

51,190

60,970 

87,630

84,730 

149,800

272, 500 

97,750

71 , 090

47,940

40, 560

32,530

38,120

38,960

42,880

40,860

2,222,000

'.95

1.15

1.20

1.05 

.85

.85 

.65

.55 

.85

.95

1.35

1.40

1.55

1.50

1.50

1.50

1.60

1.05

.57 

.64

.71

.66

.57 

.51

.51 

.40

.34

.51

.55

.74

Qft

.90

Qft

.90

.99

.90

0 .61

.52 

.52

.70

.70

.56 

.44

.48 

.37

.30 

.48

.56

.83

.87

.96

.96

.91

.91

1.00

0.61

1.77 

1.80

2.06

2.15

1.90 

1.57

1.64 

1.25

1.02 

1.57

1.75

2.46

2.61

2.85

2.79

2.79

2.82

2.88

1.88

.25 

.27

.38

.33

.27 

.21

.20 

.14

.12 

.21

.23

.38

.40

.46

.44

.42

.44

.48

0.27

.14 

.12

.16

.14

.12 

.09

.10 

.06

.05 

.10

.11

.16

.17

.18

.18

.17

.20

.21

0.13

.03

tn

.03

.04

.04 

.04

.03 

.03

.04

tn

.03

.04

ftl

.03

tn

.03

.03

.03

0.03

.02

.09

.05

.01

.02

.02

__
PART 13. SNAKE RIVER BASIN

SN4KE RIVER MAIN STEM 

SNAKE RIVER NEAR HEISE, IDAHO

LOCATION. At Eagle Rock Canal headgate, 1£ miles upstream from Heise, Bonneville County, 

headgate, If miles downstream from gaging station, about 4| miles east of Ririe, and ab

DRAINAGE AREA.--5,752 square miles (above gaging station). 

RECORDS AVAILABLE.--Chemical analyses: January 1953 to September 1955.

Water temperatures: January 1953 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 635 micromhos Jan.

Percent sodium: Maximum, 19 Sept. 1-10; minimum, 7 May 1-10, June 1-10. 

EXTREMES, 1953-55.--Specific conductance Maximum daily, 635 micromhos Jan. 9,

Percent sodium: Maximum, 19 Sept. 1-10, 1955; minimum, 7 June 11-20, 1953, May 1-10, Ju

REMARKS.--Values reported for dissolved solids are residues on evaporation. Records of sp

able in district office at Salt Lake City, Utah. Records of discharge for water year O

WSP 1397.

Chemical analyses, water year October 1954 to September 19

minimum da

1955; minimu

Date 

of 

collection

Oct. 1-10, 1954... 

Oct. 11-20. ......

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

Nov. 1-10.. ......

Nov. 11-20.......

Nov. 21-30.......

Dec. 1-10........

Dec. 11-20.......

rior, 91 si

Jan. 1-10, 1955... 

Jan. 11-20 .......

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

Feb. 11-19.......

Feb. 20-28.......

Runoff 

(acrefeet)

63,830 

61,820 

66,820 

56, 530 

56,990 

52,840

49, 730 

45, 140 

47, 820 

42, 640 

43,320 

46,710

41,870 

38, 540 

38. 840

Silica 

(Si02) 

ppm

11 

10 

9.6 

10 

12 

9.5

12 

12 

12 

11 

11 

11

13 

13 

13

Equivalents per million

Calcium 

(Ca)

3.19 

3.44 

3.49 

3.54 

3.59 

3.64

3.54 

3.74 

3.84 

3.69 

3.79 

3.69

3.79 

3.79 

3.79

Magnesium 

(Mg)

1.48 

1.56 

1.48 

1.56 

1.56 

1.64

1.56 

1.64 

1.64 

1.64 

1.56 

1.56

1.73 

1.73 

1.73

v. Sodium 

(Na)

0.61 

.61 

.61 

.61 

.61 

.61

.74 

.74 

.78 

.78 

.78 

.74

.74 

.74 

.74

Potassium 

(K)

0.05 

.05 

.05 

.05 

.05 

.05

.07 

.07 

.07 

.07 

.08 

.06

.06 

.06 

.06

Bicarbonate 

(HCOS)

3.31 

3.43 

3.39 

3.51 

3.52 

3.52

3.57 

3.70 

3.74 

3.67 

3.72 

3.59

3.64 

3.57 

3.67

Sulfate 

(SO,)

1.54 

1.67 

1.69 

1.69 

1.67 

1.73

1.73 

1.77 

1.92 

1.81 

1.79 

1.79

1.94 

2.04 

2.04

Chloride 

(Cl)

0.51 

.51 

.54 

.56 

.56 

.56

.56 

.62 

.62 

.62 

.62 

.56

.62 

.65 

.62

Fluoride 

(F)

0.02

Nitrate 

(NO,,)

0.01 

.01 

.01 

.01 

.02 

.01

.01 

.02 

.02 

.02 

.02 

.01

.02 

.02 

.01

Boron 

(B) 

ppm

0.06 

.10

.11 

.05

.03
Mar. 1-10, 1955..

Mar. 21-31.......

Apr. 1-10........

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

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

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

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

June 11-20 .......

July 1-10. ........

July 11-20. .......

July 21-31. .......

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

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

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

Sept. 21-30. ......

Total or weighted 

average .......

42, 680 

43, 500

45,460

43,720

63,930

65,530

119,500

173,300

236, 300

226, 000

332,200

297, 300

228, 200

245,000

262, 000

209,300

165,300

164,900

149, 600

135,900

87,770

4,091,000

12

1 o

13

12

9 0

8.8

14

13

12

1 9

1 0

12

15

16

17

16

16

16

16

9f>

14

14

3.74

^ fiQ

3.59

3.39

^ 9Q

3.39

2.89

2.50

2.20

2 

on

1.85

1.80

1.85

1.65

1.65

1.65

1.85

1 Qn

1.85

1 on

2.44

2.40

1.73 

1.64

1.73

1.64

1.48

1 9*}

.99

QQ

99

.77

.76

.81

.72

.69

.70

70

.77

.72

.76

1.07

0.99

.74 

.74

.78

.78

.74

.74

9Q

t^

 *f>

94

 *f>

.26

.29

.42

.42

.44

CO

.56

.61

.61

.65

0.48

.06 

.06

.05

.05

.05

.05

.02

O.9

02

0,9

.04

.04

.04

.05

.05

.05

.06

.06

.06

.06

.06

0.05

3.64 3 R7

3.57

3.41

3.36

3.43

3.08 2 79 2 4Q

2 59 2 9O,

2 

no

2.03

1.93

1.97

1 Qf> 2 1 *}

2.08 2 1 °.

2.70

2.56

1.92

1 fiQ

1.83

1 71?

1.48

1.52

1.14

.85

7>i

7^

.56

.60

.67

.56

.58

.60

.71

.75

.81

.77

1.06

0.98

.65 

.65

.68

.68

.62

.68

19

91

19

9n

.15

.17

.23

.21

.21

.23

97

.28

.28

01

.37

0.31

-

.01 

.01

.02

.01

no

.01

n°.

n9

no

no

no

no

.01

.02

.02

.02

f>9

.02

.02

f>9

.02

0.02

.

.

.
SNAKE RIVER MAIN STEM--Continued

SNAKE RIVER AT KING HILL, IDAHO

LOCATION. At county highway bridge about 400 yards downstream from gaging station, whi

King Hill, Elmore County, and 20 miles downstream from Malad River. 

DRAINAGE AREA.--35,800 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1955.

Water temperatures: March 1951 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 577 micromhos Oct. 12; minimu

Percent sodium: Maximum, 28 Aug. 1-10, 11-20, 21-31, Sept. 1-10, 21-30; minimum, 24 

EXTREMES, 1951-55.--Specific conductance: Maximum daily, 594 micromhos Oct. 3, 1952; m

Percent sodium: Maximum, 29 July 21-31, 1951; minimum, 17 Apr. 1-10, 1951. 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

available in district office at Portland, Oreg. Records of discharge for water year 

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954. 

Oct. 11-20 .....

Oct. 21-31 .....

Nov. 1-10 ......

Nov. 11-20 .....

Nov. 21-30 .....

Dec. 1-20 ......

Dec. 21-31 .....

Jan. 1-10, 1955. 

Jan. 11-20 .....

Jan. 21-31......

Feb. 1-10 ......

Feb. 11-19 .....

Feb. 20-28 .....

Runoff 

(acrefeet)

186,100 

227,900 

239,100 

219,900 

211,600 

215,400

405, 200 

212,800 

198,400 

203,100 

217,400

190,700 

147,900 

146.300

Silica 

(Si02) 

ppm

35 

37 

38 

37 

36 

35

36 

35 

35 

35 

38

38 

38 

38

Equivalents per million

Calcium 

(Ca)

2.40 

2.50 

2.50 

2.54 

2.59 

2.59

2.45 

2.45 

2.54 

2.50 

2.54

2.54 

2.50 

2.45

Magnesium 

(Mg)

1.81 

1.81 

1.81 

1.73 

1.73 

1.73

1.64 

1.64 

1.64 

1.64 

1.81

1.81 

1.81 

1.81

Sodium 

(Na)

1.57 

1.65 

1.61 

1.52 

1.52 

1.52

1.48 

1.48 

1.48 

1.48 

1.39

1.39 

1.39 

1.39

Potassium 

(K)

0.13 

.10 

.10 

.10 

.10 

.10

.12 

.12 

.12 

.12 

.09

.09 

.09 

.09

Bicarbonate 

(HCO,)

3.74 

3.80 

3.74 

3.70 

3.70 

3.70

3.64 

3.65 

3.64 

3.57 

3.57

3.54 

3.47 

3.47

Sulfate 

(S0<)

1.27 

1.29 

1.29 

1.29 

1.31 

1.29

1.12 

1.15 

1.19 

1.19 

1.21

1.19 

1.21 

1.23

Chloride 

(Cl)

0.79 

.85 

.82 

.82 

.82 

.85

.79 

.79 

.79 

.85 

.79

.79 

.79 

.79

Fluoride 

(F)

Nitrate 

(NO,)

0.08 

.06 

.05 

.05 

.06 

.06

.04 

.04 

.05 

.05 

.05

.06 

.06 

.06

Bo

(

pp

0
Mar. 1-10, 1955 . 

Mar. 11-20......

Mar. 21-31......

Apr. 1-10.......

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

170,300 

196, 100

243,000

238,400

250,900

240,400

176,700

164, 800

175,100

152,100

160,600

168,700

166,700

155,600

172,000

156,500

158, 500

171,300

159, 100

167,700

178,600

6,845,000

38 

40

37

32

36

34

36

34

35

34

35

is

33

35

40

38

42

36

36

38

35

36

2.40 

2.35

2.40

2.25

2.20

2.30

2.20

2.20

2.20

2.15

2.15

2.15

2.20

2.15

2.25

2.20

2.20

2.40

2.35

2.40

2.40

2.35

1.73 

1.64

1.64

1.40

1.48

1.40

1.40

1.40

1.40

1.48

1.48

1.56

1.64

1.64

1.56

1.64

1 "7^

1.56

1.56

1.73

1.64

1.64

1.39 

1.43

1.39

1.26

1.30

1.30

1.26

1.30

1.35

1.35

1.39

1.43

1.43

1.35

1.48

1.52

i C7

1.57

1 S7

1.57

1.61

1.44

.09 

.12

.12

.12

.11

.11

.12

.13

.12

.12

19

.12

.12

19

.13

.13

1 Q

1^

.11

.12

.13

0.11

3.47 

3.43

3.49

3.38

^ n

3.41

3.34

3.34

3.38

3.34

3.36

3.43

3.44

3.44

3.54

3.57

3.62

3.61

3.61

3.67

3.67

3.54

1.21 

1.12

1.12

1.04

1.06

1.06

i n9

1.06

1.04

1.10

1 19

1.12

1.15

1.12

1.17

1.15

1 19

1.23

1 9S

1 97

1.29

1.17

.82 

.76

.79

.73

.71

.73

.68

.71

.68

.68

.68

.68

.68

.68

.71

.71

7Q

.73

7^

.73

.73

0.76

.06 

.05

.05

.05

.05

.04

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.06

.06

.06

.06

0.05

.

.

.

.

.

.

.
SNAKE RIVER MAIN STEM Continued

SNAKE RIVER NEAR CLARKSTON, WASH.

LOCATION.--One mile downstream from gaging station, 1 mile upstream from Alpowa Creek, 8 m

and 133 miles upstream from mouth.

DRAINAGE AREA.--103,200 square miles, approximately (above gaging station). 

RECORDS AVAILABLE. Chemical analyses: November 1951 to September 1955.

Water temperatures: November 1951 to September 1955. 

EXTREMES, 1954-55.--Specific conductance: Maximum daily, 513 micromhos Dec. 23; minimum d

Percent sodium: Maximum, 35 Oct. 1-10, 11-20; minimum, 28 Apr. 11-20, May 1-8, 16. 

EXTREMES. 1951-55. Specific conductance: Maximum daily, 529 micromhos Nov. 30, Dec. 3, 1

Percent sodium: Maximum, 36 Sept. 21-30, 1954; minimum, 25 May 1-10, 11-20, 1952, Apr. 

REMARKS.--Values reported for dissolved solids are residues on evaporation. Records of sp

district office at Portland, Oreg. Records of discharge for water year October 1954 to 

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954. 

Oct. 11-20. .....

Oct. 21-31......

Nov. 1-10 ......

Nov. 11-20 .....

Nov. 21-30 .....

Dec. 1-10 ......

Dec. 11-20 .....

Dec. 21-31 .....

Jan. 1-10, 1955. 

Jan. 11-20. .....

Jan. 21-31 

Feb. 1-10 .....

Feb. 11-19 .....

Feb. 20-28 .....

Mar. 1-10......

Mar. 11-20. ....

Mar. 21-31. ....

Runoff 

(acrefeet)

458,400 

507,400 

557,600 

490,700 

507,000 

495,900

473,700 

433,400 

458,000 

457,600 

430,000 

468,300

433,200 

371,100 

349,700 

401,100 

458,000 

575.600

Silica 

(Si02) 

ppm

31 

32 

31 

31 

29 

31

30 

31 

34 

32 

32 

31

29 

30 

29 

27 

25 

24

Equivalents per million

Calcium 

(Ca)

1.85 

1.80 

1.85 

1.85 

1.80 

1.85

1.85 

1.90 

2.10 

1.95 

2.00 

1.90

2.00 

1.75 

1.85 

1.80 

1.60 

1. 55

Magnesium 

(Mg)

1.23 

1.23 

1.15 

1.23 

1.15 

1.07

1.15 

1.23 

1.23 

1.23 

1.23 

1.15

1.15 

.99 

.99 

.99 

.90 

.99

Sodium 

(Na)

1.74 

1.70 

1.61 

1.56 

1.48 

1.39

1.48 

1.48 

1.44 

1.39 

1.39 

1.35

1.35 

1.26 

1.30 

1.30 

1.22 

1.17

Potassium 

(K)

0.10 

. 10 

.10 

. 10 

. 10 

.09

.10 

.10 

.08 

.08 

.08 

.08

.08 

.09 

.09 

.09 

.09 

.09

Bicarbonate 

(HCO,)

3.06 

2.97 

2.92 

3.06 

2.93 

2.85

2.97 

3.00 

3.11 

2.88 

3.05 

2.82

2.88 

2.69 

2.75 

2.75 

2.46 

2.44

Sulfate 

(SOJ

1.23 

1.23 

1.14 

1.12 

1.04 

1.02

1.08 

1.08 

1.17 

1.08 

1.08 

1.04

1.02 

.96 

.98 

.94 

.90 

.87

Chloride 

(Cl)

0.51 

.56 

.51 

.51 

.51 

.48

.51 

.54 

.54 

.51 

.54 

.51

.51 

.51 

.54 

.51 

.51 

.48

Fluoride 

(F)

Nitrate 

(NO,)

0.03 

.03 

.04 

.04 

.04 

.04

.04 

.05 

.04 

.04 

.03 

.03

.03 

.02 

.03 

.02 

.02 

.02

Bor

(B

pp

0.

.

.

.

.

.
Apr. 1-10, 1955.

Apr. 11-20

Apr. 21-30

May 1-8, 16 ....

May 9-11, 17-21,

29-31.........

May 12-15, 22-28

June 1-6, 26-30.

June 7-8, 17,

19-22, 24-25 ..

June 9-16, 18, 23

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.... .

Total or weighted

average .......

869,000

1,043,000

1,181,000

1,467,000

2,087,000

2,579,000

2,015,000

2,259,000

3,380,000

1,360,000

1,059,000

747,800

494,700

416,100

414,300

357,800

405,400

431,200

30,890,000

24

26

34

24

19

16

16

14

14

15

16

21

26

27

9SftO

26

28

30

22

1.35

1.10

1.10

.95

.70

.60

.70

.55

.47

.75

.80

1.00

1.35

1.50

1. 50

1.65

1.70

1.75

1.10

.71

.63

.56

.44

.33

.27

.30

.24

.20

.38

.44

54 . OT

.71

.99

1.07

.99

1.07

1.07

0.62

.91

.70

.70

.56

.44

.37

.48

.41

.33

.61

.61

.83

1.09

1.26

1 <<5 A . OO

1.39

1.44

1.52

0.83

.05

.07

.07

.06

.05

.05

.06

.05

.05

.06

.06

.08

no . v3

.10

. 11

.11

.12

.11

0.07

1.98

1.72

1.66

1.46

1.05

.95

1.10

.88

.74

1.18

1.30

1.67 2 94 . £^

2.66 2 7Q . i y

9 QR £. y<j

3.00

3.11

1.75

.64

.52

sn . Ov

.40

.29

.23

.31

.25

.19

4n . ^v

.42

KA 

, WT

69

.13

79

!83

on . y\j

.92

0.56

.34

.28

.26

.20

.15

. 11

. 14

.11

.08

.17

.19

94 . £^

.34

.34

Q7 . O I

4ft . TCU

.40

.42

0. 27

.05

.04

.04

.03

n9 . v£

.01

1.56

.01

.01

n9 . v£

.01

.02

n9 . v£

n9 . v£

.02

n9 . v£

n? . vO

.03

0.02
BOISE RIVER BASIN

BOISE RIVER AT NOTUS, IDAHO

LOCATION. At steel highway bridge 1,100 feet downstream from gaging station, a quarter 

and 7 miles northwest of Caldwell. 

DRAINAGE AREA. 3,820 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: January 1939 to January 1940, November 1950 to S

Water temperatures: November 1950 to September 1955. 

Sediment records: January 1939 to June 1940.

EXTREMES, 1954-55. Specific conductance: Maximum daily, 924 micromhos May 10; minimum 

Maximum, 55 Aug. 3, 15-18, 20-23, 28, 30-31; minimum, 43 Jan. 21-31. 

1950-55. Specific conductance: Maximum daily, 1,470 micromhos July 

Percent sodium: 

EXTREMES, 1939-40,

Apr. 27, 1952. 

Percent sodium: Maximum, 64 Sept. 1-10, 1939; minimum, 25 Apr. 11-20, 1951. 

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of 

in district office at Portland, Oreg. Records of discharge for water year October 19

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954 ... 

Oct. 11-20 ........

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

Nov. 1-10. ........

Nov. 11-20 .......

Nov. 21-30 .......

Dec. 1-10.........

Dec. 11-20. .......

Dec. 21-31........

Jan. 1-10, 1955 . . 

Jan. 11-20 .......

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

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

Feb. 11-19.......

Feb. 20-28 .......

Runoff 

(acrefeet)

8,160 

18, 000 

18, 120 

13,880 

13, 640 

12, 330

11, 790 

10, 920 

11,910 

11,230 

9,910 

10, 310

9,030 

8,280 

8,480

Silica 

(Si02) 

PPm

30 

30 

36 

36 

36 

42

44 

44 

42 

42 

46 

44

42 

39 

37

Equivalents per million

Calcium 

(Ca)

2.05 

2.05 

2.54 

2.69 

2.64 

2.69

2.64 

2.69 

2.74 

2.69 

2.84 

3.29

3.04 

2.74 

2.59

Magnesium 

(Mg)

0.99 

.99 

1.32 

1.40 

1.32 

1.32

1.32 

1.32 

1.32 

1.40 

1.40 

1.40

1.32 

1.32 

1.23

Sodium 

(Na)

2.96 

2.74 

3.48 

3.57 

3.57 

3.61

3.52 

3.65 

3.65 

3.52 

3.57 

3.57

3.57 

3.35 

3.35

Potassium 

(K)

0.11 

.10 

.12 

.12 

. 13 

.12

. 12 

.13 

.14 

.14 

.12 

.12

.12 

.12 

.12

Bicarbonate 

(HCOS)

3.93 

3.72 

4.65 

4.82 

4.72 

4.77

4.80 

4.83 

4.82 

4.70 

4.90 

5.39

5.18 

4.62 

4.44

Sulfate 

(SOJ

1.60 

1.52 

2.06 

2.19 

2.29 

2.12

2.14 

2.12 

2.19 

2.17 

2.17 

2.14

2.17 

2.12 

2.08

Chloride 

(Cl)

0.54 

.48 

.62 

.68 

.68 

.65

.68 

.68 

.68 

.68 

.71 

.73

.76 

.71 

.68

Fluoride 

(F)

Nitrate 

(NO,)

0.07 

.05 

.05 

.07 

.07 

.04

.05 

.03 

.04 

.04 

.06 

.05

.06 

.11 

.11

Bor

(B

pp

0.

.

.

.

.
Mar. 1-10, 1955..

Mar. 11-20 ......

Mar. 21-31 ......

Apr. 1-10. .......

Apr. 11-13,15-18,

28-30 ..........

Apr. 14, 19-27...

May 1-7, 12-13,

21-25. ..........

May 8-11, 14 ....

May 15 20, 26-31.

June 1, 11-17, 29-3C

June 2 4,6,18-20,

25-27. ..........

June 5,7-10,21-24,

28 .............

July 1-7, 29-31...

July 12-17,19-21,28

July 8-11,18,22-27

Aug. 1-2,6-7,11-13,

24-26 ..........

Aug. 3,15-18,20-23

28, 30-31 ......

9,460

9,140

9,590

7,560

2,530

5,090

2,850

294

7,080

7,230

3,380

1,820

5,450

1,570

2,890

3,030

2,030

36

35

33

31

26

29

28

34

26

28

30

28

31

35

34

30

37

2.69

2.59

2.59

2.40

2. 10

1.65

2.05

2.59

1.55

1.65

1.85

2.15

1.85

2.35

2.20

2.15

2.40

1.15

1.15

1.15

.99

.82

.72

.80

1.32

.62

.57

.80

90

.76

1.07

.99

.99

1.15

3.22

3.35

3.44

3.26

2.70

2.09

2.87

4.61

1.87

1.96 2 74. . * Tt

3 44

2.74

4.04

3.52

3.30

4.44

.10

.10

.10

. 11

.09

.09

.10

.15

.09

. 10

.11

1 O 

. J-O

.11

.13

.12

.12

.13

4.33

4.36 4

OQ 

. oo

4.21

3.77

3.03

3.61

4.72

2.66

2.79 3

Q4 

. 0*1

3.88

3.39

4.39

4.05

4.00

4.62

2.06

2.10 2 19 

. * &

1.94

1.62

1.12

1.62

2.79

1.00

1.02 1

OQ 

, oy

1.87

1.35

2.25

1.85

1.79

2.39

.68

.68

.68

.62

.59

.40

.62

1.10

.37

.34

.51

.68

.42

.79

.62

.62

.85

.10

.07

.07

.09

.05

.06

.06

. 05

.05

.07

.06

.06

.05

.06

.06

.06

.06

_

.15

.09

.06

--

__

. 09

.06

--

__

.06
BOISE RIVER BASIN--Continued

BOISE RIVER AT NOTUS, IDAHO Continued 

Chemical analyses, water year October 1954 to September 1955--

Date 

of 

collection

Aug. 4 5, 8-10, 14, 

19, 27, 29 .......

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

Sept. 21-30 .......

Total or weighted 

average ........

Runoff 

(acrefeet)

1,770 

3,160 

9,420 

8,110

279.400

Silica 

(Si02) 

ppm

33 

36 

32 

32

36

Equivalents per million

Calcium 

(Ca)

2.35 

2.20 

2.00 

2.10

2 45

Magnesium 

(Mg)

0.99 

1.07 

.90 

.90

1. 15

Sodium 

(Na)

3.78 

3.70 

2.96 

3.13

3 26

Potassium 

(K)

0.12 

. 12 

. 11 

. 11

0 12

Bicarbonate 

(HCO,)

4.34 

4.29 

3.72 

3.95

4 34

Sulfate 

(SOJ

2.12 

1.98 

1.54 

1.64

1 94

Chloride 

(Cl)

0.73 

.68 

.51 

.51

0 62

Fluoride 

(F)

Nitrate 

(NO,)

0.05 

.06 

.06 

.06

0 Ofi

Boro

(B) 

PPm

0.04
PART 14. PACIFIC SLOPE BASINS IN OREGON AND LOWER COLUM

COLUMBIA RIVER MAIN STEM 

COLUMBIA RIVER AT MARYHILL FERRY NEAR RUFUS, 

LOCATION. At Maryhill Ferry about 2£ miles downstream from Rufus, Sherman County, and ab

station, which is just upstream from Celilo Falls,3 miles downstream from Deschutes Ri

County.

DRAINAGE AREA.--237,000 square miles (above gaging station near The Dalles).

RECORDS AVAILABLE.--Chemical analyses: December 1950 to September 1955. 

Water temperatures: December 1950 to September 1955.

EXTREMES, 1954-55. Specific conductance: Maximum daily, 232 micromhos Dec. 8; minimum d

EXTREMES, 1950-55.--Specific conductance: Maximum daily, 268 micromhos Dec. 29, 1952; mi

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of s

in district office at Portland, Oreg. Records of discharge for gaging station near Th

1955 given in WSP 1398. These records include the inflow of the Deschutes River, whic

of the annual runoff at the gaging station. No other appreciable inflow between Maryh

of heavy local rains.

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-10, 1954.. 

Oct. 11-20.......

Nov. 1-10 .......

Nov. 11-20 ......

Nov. 21-30 ......

Dec. 11-20. ......

Dec. 21-31. ......

Jan. 1-10, 1955.. 

Jan. 11-20.......

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

Feb. 1-13. .......

Feb. 14-28. ......

Runoff 

(acrefeet)

2,261,000 

2,103,000 

2,376,000 

2,146,000 

2, 200, 000 

2, 364, 000

2,241,000 

1,984,000 

2,122,000 

1,997,000 

2,019,000 

2,266,000

2,801,000 

3.221.000

Silica 

(Si02) 

ppm

10 

11

Equivalents per million

Calcium 

(Ca)

1.15 

1.25

Magnesium 

(Mg)

0.53 

.51

Sodium 

(Na)

0.48 

.48 

.48 

.48 

.40 

.43

.48 

.44 

.43 

.41 

.44 

.44

.44 

.41

Potassium 

(K)

0.06 

.04

Bicarbonate 

(HC03)

1.61 

1.66 

1.67 

1.69 

1.52 

1.54

1.64 

1.59 

1.62 

1.59 

1.62 

1.62

1.66 

1.54

Sulfate 

(SOJ

0.48 

.44

Chloride 

(Cl)

0.14 

.13

Fluoride 

(F)

0.01 

.01

Nitrate 

(N03)

0.02 

.03

Bo

(

PP

0
COLUMBIA RIVER MAIN STEM--Continued

COLUMBIA RIVER AT MARYHILL FERRY NEAR RUFUS, OREG

Chemical analyses, water year October 1954 to September 1955 

Date 

of 

collection

Mar. 1-10, 1955.. 

Mar. 11-20......

Apr. 1-10 .......

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

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

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

May 11-20.......

May 21-31 .......

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......

Total or weighted 

average ......

Runoff 

(acrefeet)

2,307,000 

2, 364, 000 

2, 624, 000

2,592,000 

2, 848, 000 

3,039,000 

3, 420, 000 

3, 866, 000 

5,048,000

6,407,000 

9,838,000 

10,420,000 

9,271,000 

8, 108, 000 

7,424,000

4, 828, 000 

3,416,000 

2, 902, 000 

2, 299, 000 

2,237,000 

2,216,000

129,600,000

Silica 

(SiOJ 

ppm

14 

9.3

Equivalents per million

Calcium 

(Ca)

1.15 

.85

Magnesium 

(Mg)

0.55 

.29

Sodium 

(Na)

0.40 

.39 

.40

.40 

.32 

.37 

.32 

.27 

.23

.18 

.15 

.14 

.16 

.16 

.17

.19 

.26 

.28 

.32 

.35 

.41

0.28

Potassium 

(K)

0.05 

.04

Bicarbonate 

(HCOj)

1.56 

1.57 

1.57

1.57 

1.39 

1.49 

1.31 

1.15 

1.03

.98 

.98 

1.05 

1.06 

1.10 

1.16

1.21 

1.30 

1.34 

1.34 

1.41 

1.48

1.29

Sulfate 

(SOJ

,0.40 

.23

Chloride 

(Cl)

0.13 

.03

..

Fluoride 

(F)

0.01 

.02

..

Nitrate 

(NO,)

0.06 

.01

Bo

(

pp

0
WILLAMETTE RIVER BASIN

WILLAMETTE RIVER AT SALEM, OREG.

LOCATION. At bridge on Oregon Highway 22, 300 feet downstream from gaging station at.Sal

DRAINAGE AREA. 7,280 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: August to December 1910, August 1911 to August 191

Water temperatures: February 1951 to September 1955.

EXTREMES, 1954-55. Specific conductance: Maximum daily, 133 micromhos Nov. 7; minimum da

EXTREMES, 1951-55. Specific conductance: Maximum daily, 133 micromhos Nov. 7, 1954; mini

REMARKS. Values reported for dissolved solids are residues on evaporation. Records of sp

in district office at Portland, Oreg. Records of discharge for water year October 1954 

Chemical analyses, water year October 1954 to September 

Date 

of 

collection

Oct. 1-16, 1954.. 

Oct. 17-31.......

Nov. 11-20. ......

Nov. 21-30. ......

Dec. 1-10. .......

Dec. 11-17. ......

Dec. 18-31. ......

Jan. 1-10, 1955.. 

Jan. 11-31.......

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

Feb. 11-20.... ...

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

Mar. 1-10.......

Mar. 11-20......

Mar. 21-31 ......

Apr. 1-10 

Apr. 11-20 

Apr. 21-30

Runoff 

(acrefeet)

281,100 

387,600 

179,700 

371,900 

379,400

320,700 

320,500 

674,400 

1,102,000 

1,023,000

544,500 

439,100 

209,300 

477,000 

427,400 

838,800

768,600 

1,023,000 

855,300

Silica 

(Si02) 

ppm

18 

13

16

Equivalents per million

Calcium 

(Ca)

0.30 

.25

.26

Magnesium 

(Mg)

0.15 

.11

.07

Sodium 

(Na)

0.19 

.17 

.21 

.17 

.16

.16 

.15 

.16 

.14 

.15

.14 

.15 

.17 

.15 

.16 

.13

.14 

.13 

.14

Potassium 

(K)

0.03 

.02

.02

Bicarbonate 

(HCOS)

0.51 

.49 

.57 

.51 

.46

.46 

.43 

.43 

.39

.44

.41 

.41 

.44 

.43 

.44 

.34

.43 

.43 

.43

Sulfate 

(SOJ

0.05 

.06

.03

Chloride 

(Cl)

0.07 

.06

.04

Fluoride 

(F)

0.01 

.01

.00

Nitrate 

(NO,)

0.01 

.02

.01

Boro

(B) 

ppm

0.0

.0

.0
WILLAMETTE RIVER BASIN--Continued 

WILLAMETTE RIVER AT SALEM, OREG. Continued 

Chemical analyses, water year October 1954 to September 1955 C

Date 

of 

collection

May 1-10, 1955... 

May 11-20.......

June 21-30. ......

July 1-10 ........

July 21-31 .......

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

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

Sept. 11-20......

Sept. 21-30 ......

Total or weighted 

average .......

Runoff 

(acrefeet)

498,200 

497,300 

552,800

541,100 

505, 600 

313,800 

267,600 

197,500 

175,000

132,900 

126,400 

134,800 

129,700 

165,300 

155,000

15,020,000

Silica 

(Si02) 

ppm

15

..

Equivalents per million

Calcium 

(Ca)

0.26

..

Magnesium 

(Mg)

0.07

Sodium 

(Na)

0.14 

.13 

.13

.13 

.12 

.13 

.15 

.17 

.17

.19 

.18 

.18 

.19 

.17 

.18

0.15

Potassium 

(K)

0.02

Bicarbonate 

(HCOS)

0.44 

.39 

.43

.39 

.36 

.39 

.43 

.49 

.49

.54 

.51 

.51 

.52 

.46 

.48

0.43

Sulfate 

(S04)

0.05

..

Chloride 

(Cl)

0.04

..

Fluoride 

(F)

0.02

..

Nitrate 

(N03)

0.01

..

Bor

(B

ppm

0.0

.
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 do

DRAINAGE AREA. 2,420 square miles, approximately.

RECORDS AVAILABLE.--Chemical analyses: January 1953 to September 1955.

Water temperatures: January 1953 to September 1955. 

EXTREMES, 1954-55. Specific conductance: Maximum daily, 125 micromhos Feb. 5; minimum da

Percent sodium: Maximum, 28 Nov. 11-20, Aug. 1-10; minimum, 22 May 22-31. 

EXTREMES, 1953-55. Specific conductance: Maximum daily, 251 micromhos Feb. 21, 1954; min

Percent sodium: Maximum, 35 Oct. 11-20, 1953; minimum, 11 Feb. 16-22, 1954.

REMARKS.--Values reported for dissolved solids are residues on evaporation. Records of sp

in district office at Portland, Oreg. Records of discharge for water year October 1954 

Chemical analyses, water year October 1954 to September 1

Date 

of 

collection

Oct. 1-10, 1954 .. 

Oct. 11-20.......

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

Nov. 1-10 .......

Nov. 21-30 ......

Dec. 1-10. .......

Dec. 11-20. ......

Dec. 21-31. ......

Jan. 1-10, 1955.. 

Jan. 11-20.......

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

Feb. 11-20- ......

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

Runoff 

(acrefeet)

30,310 

31,220 

34,650 

30,350 

35,170 

31,440

34,610 

34,450 

48,440 

54,450 

38,040 

52,380

56,450 

48,610 

32.050

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

0.41 

.41 

.43 

.41 

.42 

.42

.45 

.49 

.44 

.42 

.45 

.47

.49 

.45 

.43

Magnesium 

(Mg)

0.24 

.24 

.25 

.25 

.25 

.23

.23 

.26 

.25 

.21 

.22 

.29

.26 

.26 

.26

Sodium 

(Na)

0.26 

.26 

.27 

.26 

.26 

.26

.26 

.26 

.24 

.21 

.26 

.26

.27 

.26 

.26

Potassium 

(K)

Bicarbonate 

(HCOS)

0.85 

.87 

.88 

.85 

.85 

.85

.88 

.92 

.85 

.66 

.90 

.92

.90 

.90 

.88

Sulfate 

(SOJ

0.03 

.03 

.03 

.03 

.03 

.04

.04 

.06 

.05 

.05 

.04 

.05

.05 

.04 

.04

Chloride 

(Cl)

0.06 

.07 

.08 

.07 

.07 

.08

.08 

.09 

.08 

.08 

.08 

.08

.09 

.08 

.09

Fluoride 

(F)

Nitrate 

(NO,)

0.01 

.01 

.01 

.01 

.01 

.01

.01 

.01 

.01 

.04 

.01 

.01

.02 

.01 

.01

Boron 

(B) 

ppm

0.06 

.02

.01 

.05

.02 

.04
ROGUE RIVER BASIN Continued

ROGUE RIVER AT GRANTS PASS, OREG.--Continued 

Chemical, analyses, water year October 1954 to September 1955--C

Date 

of 

collection

Mar. 1-10, 1955..

Mar. 21-31......

Apr. 1-10. .......

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

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

May 1-12........

Ma v 1 ^ 91

May 22-31 .......

June 1-10. ........

July 1-10........

July 11-20.......

July 21-31 .......

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

Aug. 11-20. ......

Aiiu 91 ^1

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

Sept. 11-20......

Sept. 21-30. .....

Total or weighted 

averaee .......

Runoff 

(acrefeet)

44,790 

45,960 

92,730

70,630 

69,180 

83,780 

96,300 

72,340 

77,040

77,160 

65,570 

42,600 

33,460 

26,660 

24, 140

20,490 

19,750 

19,440 

17,560 

22,230 

20,790

1 K<JK nnn

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

0.46 

.43 

.42

.41 

.37 

.43 

.43 

.30 

.28

.32 

.31 

.29 

.33 

.33 

.33

.33 

.33 

.33 

.34 

.36 

.40

n Af\

Magnesium 

(Mg)

0.26 

.30 

.26

.26 

.25 

.24 

.25 

.16 

.16

.13 

.12 

.12 

.19 

.23 

.20

.21 

.22 

.21 

.21 

.21 

.25

n 99

Sodium 

(Na)

0.28 

.27 

..24

.21 

.20 

.22 

.22 

.16 

.14

.16 

.17 

.16 

.19 

.22 

.23

.22 

.22 

.22 

.22 

.23 

.26

n 99

Potassium 

(K)

Bicarbonate 

(HCOj)

0.92 

.90 

.87

.80 

.75 

.82 

.82 

.57 

.56

.61 

.62 

.57 

.69

.74 

.74

.72 

.74 

.74 

.75 

.79 

.84

n 70

Sulfate 

(SOJ

0.04 

.04 

.04

.04 

.04 

.04 

.04 

.03 

.03

.02 

.03 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.03 

.05

n HA

Chloride 

(Cl)

0.11 

.08 

.08

.05 

.04 

.06 

.06 

.03 

.04

.05 

.06 

.03 

.05 

.06 

.05

.03 

.04 

.05 

.05 

.06 

.06

n f\K

Fluoride 

(F)

Nitrate 

(NOJ

0.01 

.01 

.01

.01 

.01 

.01 

.01 

.01 

.01

.02 

.03 

.01 

.01 

.01 

.01

.00 

.01 

.01 

.00 

.01 

.01

n nt

Boron 

(B) 

ppm

0.06

.05 

.02

.05 

.02

.01 

.00
INDEX

E

Page 

Acknowledgments ................... 5-6

Agua Fria River below Lake Pleasant

Dam, Ariz .................... 149

Alamogordo Dam, N. Mex. , Pecos

River below ................... 112-113

American River at Fair Oaks, Calif... 164-165 

Archuleta, N. Mex., San Juan River

near.......................... 134

Arkansas City, Kans. , Arkansas River

at ............................ 57-59

Arkansas River at Arkansas City, Kans. 57-59 

at Ralston, Okla.................. §0-63

at Van Buren, Ark ................ 69-76

below John Martin Reservoir, Colo . 55-56 

Arkansas River basin ............... 55-82

Artesia, N. Mex., Pecos River near .. 114-115 

Austin, Tex., Colorado River at ..... 93

B

Bartlett Dam, Ariz., Verde River

below......................... 147-148

Bicarbonate ion hazard .............. 22

Bighorn, Mont. , Bighorn River at .... 38-39

Bighorn River at Bighorn, Mont....... 38-39

Billings, Mont, Yellowstone River at. 34-35

Biola, Calif., San Joaquin River near . 153-154

Blanco, N. Mex. , San Juan River near. 135

Bluff, Utah, San Juan River near ..... 136-137

Boise River at Notus, Idaho .......... 178-180

Boise River basin ................... 178-180

Boron hazard ....................... 21

Brady, Nebr., Platte River at ....... 47-48

Brazos River at Richmond, Tex ...... 91-92

Brazos River basin ................. 91-92

Cambridge, Nebr., Republican River at 53-54 

Cameron, Ariz., Little Colorado River

at ............................ 138

Canadian River near Whitefield, Okla . 77-82

Chapeno, Tex., Rio Grande at ....... Ill

Christiansen, J. E .................. 22

Cimarron River at Perkins, Okla ..... 64-68

Cisco, Utah, Colorado River near .... 120-121

Clarkston, Wash., Snake River near .. 176-177

Collection of samples ................ 6

Colorado River at Austin, Tex ....... 93

at Lees Ferry, Ariz .............. 122-123

at Wharton, Tex .................. 94

below Hoover Dam, Ariz. -Nev ..... 126-127

main stem ....................... 118-127

near Cisco, Utah ................. 120-121

near Glenwood Springs, Colo ...... 118-119

near Grand Canyon, Ariz .......... 124-125

Colorado River basin (Part 8) ........ 93-94

Colorado River basin (Part 9) ... 16-17,118-149 

Columbia River at Grand Coulee Dam,

Wash ......................... 168-169

at International Boundary ......... 166-167

at Maryhill Ferry near Rufus, Oreg. 181-182

Columbia River main stem (Part 12) .. 166-169

Columbia River main stem (Part 14) .. 181-182

D

Denison, Tex., Red River near ....... 83

Discussion of results ................ 9-20

Diversions and return flows at and

below Imperial Dam ........... 128-129

Eaton, F. M. .................

Elephant Butte Outlet, N. Mex., 

Rio Grande below ........

El Paso, Tex., Rio Grande near 

Evadale, Tex., Neches River at 

Examination of samples.........

Explanation of tables .........

Page 

20,21

105

106

87-88

6-8

8-9

Fair Oaks, Calif. , American River at 164-165 

Feather River at Nicolaus, Calif .... 162-163

Gila River at Kelvin, Ariz .......... 141-142

below Gillespie Dam, Ariz ...... 143-144

Gila River basin ................... 141-149

Gillespie Dam f Ariz., Gila River

below ....................... 143-144

Glenwood Springs, Colo., Colorado

River near................... 118-119

Grand Canyon, Ariz., Colorado

River near................... 124-125

Grand Coulee Dam, Wash., Columbia

River at ..................... 168-169

Grand Junction, Colo., Gunnison

River near .................. 130-131

Grants Pass, Oreg., Rogue River at. 185-186 

Green River, Utah, Green River at .. 132-133 

Green River at Green River, Utah ... 132-133 

Green River basin ................. 132-133

Guadalupe River at Victoria, Tex .... 95-96

Guadalupe River basin .............. 95-96

Guernsey Reservoir, Wyo., North

Platte River below ............ 45-46

Gunnison River near Grand Junction,

Colo ........................ 130-131

Gunnison River basin .............. 130-131

H

Headley, F. B. ................... 20,22

Heise, Idaho, Snake River near ..... 172-173

Hoover Dam, Ariz. - Nev. , Colorado

River below ................. 126-127

Hudson Bay and upper Mississippi

River basins ............... 9,12,24-27

Humboldt River near Rye Patch,

Nev ......................... 152

Humboldt River basin .............. 152

I

International Boundary, Columbia

River at ..................... 166-167

Irrigation - quality network stations.. 2-4

John Martin Reservoir, Colo. , Arkansas

River below.................. 55-56

Julesburg, Colo., South Platte River

at .......................... 51-52

K

Kansas River basin ................ 53-54

Kelvin, Ariz. , Gila River at ........ 141-142

King Hill, Idaho. Snake

River at ................... 174-175

187
188 INDEX

Page 

Kiona, Wash. , Yakima River at......... 170-171

Knights Landing, Calif. , Sacramento

River at......................... 159-161

Lake Pleasant Dam, Ariz., Agua Fria

River below ..................... 149

Langtry, Tex. , Rio Grande at .......... 109

Laredo, Tex. , Rio Grande at ........... 110

Lees Ferry, Ariz. , Colorado River at... 122-123 

Little Colorado River at Cameron, Ariz . 138 

Little Colorado River basin ............. 138

Littlefield, Ariz. , Virgin River at ...... 139-140

Lobatos, Colo., Rio Grande near........ 98-99

Locate, Mont. , Powder River near ...... 42-44

Lower Mississippi River basin ......... 15, 55-83

Lynndyl, Utah, Sevier River near ....... 150-151

M

Magistad, O. C. ...................... 22

Mathis, Tex. . Nueces River near ....... 97

Maxwell, Neb., Supply Canal (Tri-county

diversion) near .............. 49-50

Miles City, Mont., Tongue River at ..... 40-41

Missouri River at Nebraska City, Nebr. .. 32-33 

at Pierre, S. Dak ................... 30-31

main stem ......................... 28-33

near Williston, N. Dak .............. 28-29

Missouri River basin .............. 12-14, 28-54

Mokelumne River at Woodbridge,

Calif............................ 157-158

N

Nebraska City, Nebr. , Missouri River at 32-33

Neches River at Evadale, Tex .......... 87-88

Neches River basin .................... 87-88

Nicolaus, Calif. , Feather River at ...... 162-163

North Platte River below Guernsey

Reservoir, Wyo. ................. 45-46

Notus, Idaho, Boise River at ........... 178-180

Nueces River near Mathis, Tex ......... 97

Nueces River basin ................... 97

O

Old Fort Quitman, Tex., Rio Grande

below ........................... 107

Orla, Tex. , Pecos River near .......... 116

Pacific slope basins in California .... 18,153-165

Pacific slope basins in Oregon and lower

Columbia River basin ....... 19-20,181-186

Pacific slope basins in Washington and

upper Columbia River basin .... 19,166-171

Pecos River below Alamogordo Dam,

N. Mex ........................ 112-113

below Red Bluff Dam, near Orla, Tex. 116 

near Artesia, N. Mex ............... 114-115

near Shumla, Tex ................... 117

Percent sodium ....................... 9-20

Perkins, Okla. , Cimarron River at 64-68 

Pierre, S. Dak. , Missouri River at ..... 30-31

Platte River at Brady, Nebr ............ 47-48

Platte River basin ..................... 45-52

Powder River near Locate, Mont........ 42-44

R

Ralston, Okla. , Arkansas River at ...... 60-63

Red River at Denison Dam, near Denison,

Tex............................. 83

Red River basin ....................... 83

Red River of the North basin ............ 24-27

Reporting data ........................ 8

Republican River above Medicine Creek

at Cambridge, Nebr. ............. 53-54

Residual sodium carbonate ............. 22

Richmond, Tex., Brazos River at....... 91-92

Page 

Rio Grande above Culebra Creek near

Lobatos, Colo ............. .. 98-99

at Chapeno, Tex ................ Ill

at Langtry Tex .................. 109

at Laredo, Tex ................. 110

at Otowi Bridge near San

Ildefonso, N. Mex............. 100-101

at Upper Presidio, Tex .......... 108

below Elephant Butte Outlet,

N. Mex ...................... 105

below Old Fort Quitman, Tex ..... 107

conveyance channel at San Marcial,

N. Mex ...................... 102-103

floodway at San Marcial, N. Mex .. 104 

near El Paso, Tex ............... 106

Rio Grande basin .................. 98-117

Rogue River at Grants Pass, Oreg,... 185-186 

Rogue River basin ................. 185-186

Romayor, Tex., Trinity River at .... 89-90

Rufus, Oreg., Columbia River near 181-182 

Ruliffl Tex., Sabine River near ..... 84-86

Rye Patch, Nev. , Humboldt River

near......................... 152

Sabine River near Ruliff, Tex ....... 84-86

Sabine River basin ................. 84-86

Sacramento River at Knights Landing,

Calif. .......................159-161

Sacramento River basin ............ 159-165

Salem, Oreg., Willamette River at... 183-184 

Salinity hazard..................... 21

Salt River at Stewart Mountain Dam,

Ariz ........................ 145-146

San Ildefonso, N. Mex., Rio Grande

near ......................... 100-101

San Joaquin River near Biola, Calif.. .153-154 

near Vernalis, Calif ............. 155-156

San Joaquin River basin ............ 153-158

San Juan River near Archuleta,

N. Mex ...................... 134

near Blanco, N. Mex ............ 135

near Bluff, Utah................. 136-137

San Juan River basin ............... 134-137

San Marcial, N. Mex. , Rio Grande

conveyance channel at ......... 102-103

Rio Grande floodway at .......... 104

Schedules for analyses of samples ... 7 

Scofield, C. S...................... 20, 22

Sevier Lake basin .................. 150-151

Sevier River near Lynndyl, Utah .... 150-151

Sheyenne River near Warwick, N. Dak, 24-25 

Shumla, Tex. , Pecos River near..... 117

Sidney, Mont. , Yellowstone River

near ........................ 36-37

Snake River at King Hill, Idaho ...... 174-175

main stem ...................... 172-177

near Clarkston, Wash............ 176-177

near Heise, Idaho................ 172-173

Snake River basin ............... 19,172-180

Sodium-adsorption ratio (SAR)....... 9,21

Sour is River near Westhope, N. Dak. 26-27 

South Platte River at Julesburg, Colo. 51-52 

Stewart Mountain Dam, Ariz. ,

Salt River at ................. 145-146

Straus, Michael ................... 22

Summary of water discharge, and

tonnages of dissolved solids ..... 11 

Supply Canal (Tri-county diversion)

near Maxwell, Nebr ........... 49-50

The Great Basin ............ 17,150-152

Thorne, J. P. and Thorne, D. W.... 20,22

Tongue River at Miles City, Mont.... 40-41

Trinity River at Romayor, Tex ..... 89-90

Trinity River basin ................. 89-90

U

United States Salinity Laboratory Staff 20,23
INDEX 189

Units for reporting data............. 8

Upper Columbia River basin ........ 166-171

Upper Presidio, Tex., RioGrandeat. 108

Van Buren, Ark., Arkansas River at. 69-76 

Verde River below Bartlett Dam, Ariz. 147-148 

Vernalis, Calif., San Joaquin River

near........................ 155-156

Victoria, Tex., Guadalupe Rive rat .. 95-96 

Virgin River ac Littlefield, Ariz...... 139-140

Virgin River basin ................. 139-140

W

Warwick, N. Dak. , Sheyenne River

near ....................... 24-25

Western Gulf of Mexico basins ... 15-16, 84-117 

Westhope, N. Dak., Sour is River .... 36-27

Wharton, Tex., Colorado River at .. 

Whitefield, Okla., Canadian River

near.......................

Wilcox, L. V. ....................

Willamette River at Salem, Oreg ... 

Wiilamette River basin ............

Williston, N. Dak., Missouri River

near ......................

Woodbridge, Calif., Mokelumne

River at ...................

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

Yellowstone River at Billings, Mont, 

near Sidney. Mont. ............

Yellowstone River basin ...........

Yuma, Ariz. , Yuma Main Canal at.. 

Yuma Main Canal below Colorado

River siphon at Yuma, Ariz .

94

77-82

20,23

183-184

183-184

28-29 

157-158

170-171 

34-35 

36-37 

34-44

128-129

128-129

U S GOVERNMENT PRINTING OFFICE 1959 O 439291