Quality of Surface 

Waters for Irrigation 

Western States 

1965_________

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1967

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1969
UNITED STATES DEPARTMENT OF THE INTERIOR 

WALTER J. HICKEL, Secretary

GEOLOGICAL SURVEY 

William T. Pecora, Director

Library of Congress catalog-card No. GS 55-331

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

Washington, D.C. 20402
PREFACE

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

Water Resources Division, E. L. Hendricks, chief hydrologist, 

G. W. Whetstone, assistant chief for Reports and Data Processing, under the general direction of S. M. Lang, chief, Reports 

Section, and B. A. Anderson, chief, Data Reports Unit.

The data were collected under the supervision of the following:

H. M. Babcock, district chief............. Tucron, Ariz.

G. L. Bodhaine, district chief .......... Portland, Or eg.

D. M. Culbertson, district engineera ..... Lincoln, Nebr.

W. E. Hale, district chief........ Albuquerque, N. Mex.

Walter Hofmann, district chief....... Menlo Park, Calif.

T. F. Hanly, district engineer........... Worland, Wyo.

L. B. Laird, district chief ............. Tacoma, Wash.

R. H. Langford, district chemistb .. Salt Lake C'ty, Utah 

R. P. Orth, district chief ......... Oklahoma C'ty, Okla.

R. T. Sniegocki, district chief......... Little Rock, Ark.

Trigg Twitchell, district chief ............. Austin, Tex.

G. F. Worts, Jr., district chief ...... Carson City, Nev.

^Succeeded by K. M. Mac Kichan, district chief. 

Succeeded by M. T. Wilson, district chief.

Ill
CONTENTS

Page

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

Acknowledgments.................................... 6

Collection of samples .............................. 7

Examination of samples ............................. 7

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

Explanation of tables .............................. 9

Criteria of water quality. ......................... 10

Discussion of results .............................. 16

Missouri River basin. ............................ 16

Lower Mississippi River basin.................... 17

Western Gulf of Mexico basins.................... 18

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

The Great Basin. ................................. 21

Pacific slope basins in Washington and upp^r

Columbia River basin. ...................... 22

Snake River basin ................................ 22

Pacific slope basins in Oregon and lower Columbia

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

Selected references................................ 25

Quality of surface waters for irrigation........... 27

Part 5. Hudson Bay and upper Mississippi River

basins..................................... 27

Red River of the North basin. .................. 27

Sheyenne River near Warwick, N. Dak.......... 27

Part 6. Missouri River basin..................... 29

Missouri River main stem, ...................... 29

Missouri River near Culbertson, Mont. ........ 29

Missouri River near Williston, N. 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

Wind River below Boysen Reservoir, Wyo. ...... 38

Bighorn River at Bighorn, Mont............... 40

Tongue River at Miles City, Mont............. 42

James River basin .............................. 44

James River at Huron, S. Dak. ................ 44

Platte River basin. ............................ 46

Platte River at Brady, Nebr.................. 46

Platte River near Overton, Nebr. ............. 48

Supply Canal (Tri-County diversion) near

Maxwell, Nebr.............................. 50

South Platte River at Julesburg, Colo. ....... 52
VI CONTENTS

Quality of surface waters for irrigation 

Continued Page 

Part 7. Lower Mississippi River basin............ 54

Arkansas River basin........................... 54

Arkansas River below John Martin Reservoir,

Colo....................................... 54

Arkansas River at Arkansas City, Kans. ....... 56

Arkansas River at Van Buren, Ark............. 59

Cimarron River at Perkins, Okla.............. 61

Canadian River near Whitefield, Okla. (1964). 63 

Red River basin................................ 65

Red River at Denison Dam, near Denison,

Tex........................................ 65

Washita River near Durwood, Okla............. 66

Part 8. Western Gulf of Mexico basins............ 69

Sabine River basin............................. 69

Sabine River near Ruliff, Tex................ 69

Neches River basin............................. 71

Neches River at Evadale, Tex................. 71

Trinity River basin............................ 73

Trinity River at Romayor, Tex................ 73

Brazos River basin............................. 75

Brazos River at Richmond, Tex. ............... 75

Colorado River basin ........................... 77

Colorado River at Austin, Tex................ 77

Colorado River at Wharton, Tex. .............. 78

Guadalupe River basin.......................... 79

Guadalupe River at Victoria, Tex. ............ 79

Nueces River basin............................. 81

Nueces River near Mathis, Tex. ............... 81

Rio Grande basin ............................... 82

Rio Grande above Culebra Creek, near

Lobatos, Colo.............................. 82

Rio Grande at Otowi Bridge, near San

Ildefonso, N. Mex.......................... 84

Rio Grande conveyance channel at San

Marcial, N. Mex............................ 86

Rio Grande floodway at San Marcial, N. IT^x... 88 

Rio Grande at El Paso, Tex. .................. 89

Rio Grande at Fort Quitman, Tex. ............. 90

Rio Grande above Rio Conchos, near

Presidio, Tex.............................. 91

Rio Grande at Langtry, Tex. .................. 92

Rio Grande at Laredo, Tex.................... 93

Rio Grande below Falcon Dam, Tex. ............ 94

Pecos River below Alamogordo Dam,

N. Mex..................................... 95

Pecos River near Artesia, N. Mex. ............ 96

Pecos River below Red Bluff Dam, near

Orla, Tex.................................. 99

Pecos River near Shumla, Tex................. 100

Part 9. Colorado River basin..................... 101

Colorado River main stem....................... 101

Colorado River near Glenwood Springs, Colo... 101 

Colorado River near Cisco, Utah. ............. 103
CONTENTS VII

Quality of surface waters for irrigation 

Continued 

Colorado River basin Continued

Colorado River main stem Continued Page 

Colorado River at Lees Ferry, Ariz.......... 105

Colorado River near Grand Canyon, Ariz...... 106

Colorado River below Hoover Dam,

Ariz.-Nev................................. 108

Diversions and return flows at and below

Imperial Dam.............................. 109

Yuma Main Canal below Colorado River siphon,

at Yuma, Ariz............................. 109

Gunnison River basin.......................... 110

Gunnison River near Grand Junction,

Colo...................................... 110

Green River basin............................. 112

Green River near Greendale, Utah. ........... 112

Green River at Green River, Utah............ 113

Yampa River near Maybell, Colo.............. 115

San Juan River basin.......................... 117

San Juan River near Archuleta, N. Mex....... 117

San Juan River near Bluff, Utah............. 119

Virgin River basin............................ 121

Virgin River at Littlefield, Ariz........... 121

Gila River basin.............................. 122

Gila River at Kelvin, Ariz.................. 122

Gila River below Gillespie Dam, Ariz........ 124

Salt River below Stewart Mountain Dam,

Ariz...................................... 126

Verde River below Bartlett Dam, Ariz........ 127

Part. 10. The Great Basin....................... 128

Sevier Lake basin............................. 128

Sevier River below Piute Dam, near

Marysvale, Utah. .......................... 128

Sevier River near Lynndyl, Utah............. 129

Carson River basin............................ 131

Carson River near Silver Springs, Nev....... 131

Humboldt River basin.......................... 133

Humboldt River at Palisade, Nev............. 133

Humboldt River near Rye Patch, Nev.......... 134

Pyramid and Winnemucca Lakes basin............ 135

Truckee River at Floriston, Calif........... 135

Part 12. Pacific slope basins in Washington and

upper Columbia River basin................ 136

Columbia River main stem...................... 136

Columbia River at International Boundary,

Wash...................................... 136

Yakima River basin............................ 137

Yakima River at Kiona, Wash................. 137

Part 13. Snake River basin...................... 139

Snake River main stem......................... 139

Snake River near Heise, Idaho............... 139

Snake River at King Hill, Idaho............. 141

Boise River basin............................. 143

Boise River at Notus, Idaho................. 143
VIII CONTENTS

Quality of surface waters for irrigation 

Continued Page 

Part 14. Pacific slope basins in Oregon and

lower Columbia River basin................. 145

Columbia River main stem....................... 145

Columbia River near The Dalles, Oreg......... 145

Willamette River basin......................... 146

Willamette River at Salem, Oreg.............. 146

Index.............................................. 147

ILLUSTRATIONS

Page 

Plate 1. Stations for irrigation-quality network

in Western United States......... In pocket

Figure 1. Nomogram for determining the SAR value

of irrigation water and for estimating 

the corresponding ESP value of a soil 

that is at equilibrium with the water.. 13 

2. Diagram for classification of irrigation

waters................................. 15
QUALITY OF SURFACE WATERS

FOR IRRIGATION, 

WESTERN STATES, 1965

INTRODUCTION

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

annual compilation of data for 72 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 tse drainage of 

irrigated lands.

In recognition of this problem the Committee on Hydrology, Water Resources Council (formerly the Subcommittee on Hydrology, 

Interagency Committee on Water Resources) on February 6, 1950, 

approved a list of 106 network stations on streams in the western 

conterminous United States at which water samples were to be 

collected and analyzed with particular reference to the use of these 

streams' 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, 

SOwereselectedfor 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 Committee 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). Four 

stations on the list were discontinued at the end of the 1963 water 

year, and two at the end of the 1964 water year. Two stations 

were added to the list in 1963, two in 1964, and two in 1965. 

This increased the original list to 115 stations.
QUALITY FOR IRRIGATION. 1965

Irrigation-Quality Network Stations, Western States

[Selected by Committee on Hydrology, Water Resources Council, 1950]

Irrigation 

network 

no.

1 

2

Q

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18 

18a

19

20

91

99

90

24

25

26

27

28

29

Qf)

Q1

09

QQ

Qd

35

36

Q7

38

QQ

40

41

49

dQ

Geological 

Survey 

station 

ident. 

no.

5-1240 

6-3300

-4400

-8070

-2145

Q9Qc:

-2595 

-2590 

-2947

-3085

-3265

-3580

-3610

-4395 

-4^9(1

-4760

-6420

-6560

-7660 

-7657

-7640

-8535

-8655

-8680

-8695

7-1 9(1^

-1465

-1525

2505

-1640

1610

94<Sf)

-3316

-3280

8- 305

- 410

- 665

-1140

-1580

-1620

-1765

-2110

94Q9

Stream and location

Sour is (Mouse) River near Westhope, N. Dak.

JUIi ccr\iiTM RlTrPT* Qi" T^1PT*T*P ^1 rtol*"

Bighorn River at Thermopolis, Wyo ......... 

Wind River below Boysen Reservoir, Wyo . . .

Cheyenne River near Eagle Butte, S. Dak. . . .

North Platte River below Guernsey Reservoir, Wyo. 

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

Maxwell, Nebr.

Republican River above Medicine Creek at

Cambridge, Nebr.

voir, Colo.

Tex.

IJVa chif"Q RIVPT* npur T'siVil PT* Olrl ^

Labatos, Colo.

Date 

established

June 195* 

12- 5-50

10- 3-50

1- 4-51

12-15-50

1- 3-51

1- 1-51 

11-24-53 

10- 2-50

1- 4-51

1- 4-51

1-17-51

1-17-51

Aug. 1956

12- 7-50

2-28-51 

3- 1-51

10- 1-45

12-22-50

Aug. 1956

4- 3-50

1-10-51

10- 9-fl

1- 1-50

10- 1-45

10- 1-49

10- 1-52

6- 2-48

9- 1-46

5- 1-44

9-10-46

10- 1-47

10- 1-47

9- 1-45

9- 1-45

9- 1-45

10- 1-47

10- 1-47

4-11-44

9- 1-45

10- 1-41

10-11-46

Date 

discontinued

9-30-64 

6-30-65

9-30-58

1-21-54

7-31-63

11-20-53

11-20-53

9-30-58

9-30-58

Sept. 1957

10- 3-52

9-30-53

9-30-63

9-30-52

9-30-53

11-30-64

10- 3-52

4- 5-54

9-30-51

See footnotes at end of table.
INTRODUCTION

Irrigation-Quality Network Stations, Western States Continued

Irrigation 

network 

no.

44

45

46 

47

48

49

50

KI

CO

CO

54

ee

CO

57

58

59 

60

C1

62

CO

R4

cc

CO

67

fio

69

70 

71

72

73 

74

75

rj c

77

7Q

79

Geological 

Survey 

station 

ident. 

no.

8-3130

-3585

-3583

-3584

-3610 

-3640

-3705

 371 c

S77S

-4580

4"iQf)

-4625

-4615

-4613

-3845

-3696

-4101

-4475

-4474

9- 711

-1805

-3800 

4f\oc

491 C.

-4280

-5255

1 enc

9°.4K.

-3150

-3565

oeee

 37QC

401 9

-4740 

f^1 Qf^

-5020

-5100 

-5136

10-1180

-1915

-2240 

S?9S

-3350

Stream and location

fonso, N. Mex.

cial, N. Mex.

Rio Grande below Elephant Butte Dam, 

N. Mex. 

Rio Gr£inclG ricur El Peiso TGX

Presidio, Texc .

N. Mex.

Orla, Tex.

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

Nev.

Calif.

Colorado River Siphon, at Yuma, Ariz.

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

Ariz. 

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

Agua Fria River below Lake Pleasant Dam, 

Ariz.

Marysvale, Utah. 

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

Humboldt River near Rve Patch. Nev. .......

Date 

established

10-23-47

7- 1-48

Oct. 1954

Oct. 1954

1933 

1930

1930

1935

1945

1938

7- 1-55

1944

July 1955

July 1955

6-2°-37

7- 1-37

7- 1-37

1935

1- 1-55

Oct. 1941

Oct. 1928

10- 1-47 

Oct. 1925

Oct. 1939

Oct. 1942

Oct. 1931

Oct. 1956

Oct. 1928

10- 1-45

12-n-54

Oct. 1929

1-17-51

12- 1-50 

12- 1-50

12- 9-50

12- 9-50 

12- 1-50

Mar. 1958

3-22-51 

May 1962

12-10-51

Date 

discontinued

Oct. 1954

Sept. 1963

1-30-55

1-31-55

9-30-56

Dec. 1954

12-31-54

9-30-58

9-30-58

..........

See footnotes at end of table.
QUALITY FOR IRRIGATION. 1965

Irrigation-Quality Network Stations, Western States Continued

Irrigation 

network 

no.

on

81

82

QQ

84

85

86

87 

88

QQ

90

91 

92

Q^

94

oc:

97

QQ

99

100

101

102 

103 

104

105

106

107

108

109

110

111

110

119

114

115

Geological 

Survey 

station 

ident. 

no.

11-2510

9540

-3035

QQ70

-3105 

-2535

9955

orron

-3910 

-4250

-4465

12-3995

-4365 

-3220

-3985

-5105

i q Q7£

- 815

1 545

9fiqn

-3435

91 95

14-1057 

-3010 

-1910

-3615

5- 560

6-6875

-8055

Q_41 50

7 ^^1 r\

10-3120.2 

991 50

1 O 945Q

6-1855

6-7680

Stream and location

Calaveras River (Stockton diverting canal) 

at Stockton, Calif.

Sacramento River at Knights Landing, Calif . .

Wash. 

Columbia River at Grand Coulee Dam, Wash.

Wash. 

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

^Iticilri3 "RivoT* TIPQT* f~M si i* lr ci ton \A/a ch

Snake River at Central Ferry, near Pomeroy,

Wash.

Columbia River near The Dalles, Oreg ...... 

Deschutes River at Moody, near Biggs, Oreg.

<MVlT» + h Pl^tto RlirOT* tit" T P'WpllPTI ^pVlT*^

Carson River near Silver Springs, Neve .....

Platte River near Overton Nebr^ '

Date 

established

3- 1-51

3- 1-51 

1952

3- 1-51

2-26-51 

2-26-51

5- 1-51

11-15-51

11-25-50

12-30-52 

1- 8-53

3-27-51

11-14-51

9-28-55

11-21-50

12- 1-50 

Dec. 1952 

2- 1-51

1- 5-53

1- 8-51

July 1949

May 1944

10- 1-62 

Nov. 1950

Jan. 1964

July 1965

Nov. 1958

Date 

discontinued

6-30-63

10- 3-52 

Sept. 1961

9-30-58

5-31-60 

9-30-62

9-30-62

9-30-58

Feb. 1956

9-30-58

2-15-54

9-30-58

..........

Deactivated August 1963.

^Reactivated December 1960, irrigation records from October 1962.

cOperated by International Boundary and Water Commission.

dStations added by Committee, October 1952.

eAdded to the list in 1963.

f Added to the list in 1964.

S Added to the list in 1965.
INTRODUCTION O

It was contemplated that the network stations would be located 

at streamflow gaging stations and that the program of collecting 

and analyzing the samples and reporting the findings would be the 

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

of stream 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 stem 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 streamflow 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 water-supply 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), 

as would be required for intensive studies of specific projects, 

should not in general be included.

Plate 1 is a plot of the 115 network stations on streams in the 

Western States. The 72 stations in operation in 1965 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 Committee, as earlier records were included also. Proposed stations 

are identified by an open circle. Discontinued stations are identified by a half circle.

To facilitate identification, each Geological Survey gaging station and sampling station has been assigned a station number. 

The station numbers were assigned according to Geological Survey practice in reporting records of streamflow: Stations on tributary streams are listed between stations on the main stem in the 

order in which those tributaries enter the main stem. However,
6 QUALITY FOR IRRIGATION, 1965

in this report the numbers will not all appear in increasing numerical order because all the main stem stations on a river are 

reported before listing the stations on the tributaries.

The complete number for each station has 8 digits, lx\it the station name consists of only the digits essential for identification. 

For example, for a station with the complete number 08-0100.00, 

this station number shown in this report is 8-100.

This is the final report of this series for quality of surface 

waters for irrigation. Beginning with the 1966 water year, waterquality data for irrigation waters may be obtained from U. S. Geological Survey annual State releases or from the wr.ter-supply 

paper series, "Quality of Surface Waters of the United States." 

The irrigation network stations in these reports will be identified 

under the station name by "Irrigation network station" set in 

parentheses.

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 Irterior; the 

Corps of Engineers, U.S. Army; the State engineers for each of 

the 19 Western States; and the Ministry of Hydraulic Resources 

of Mexico.

During 1964-65, 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, Presidio, Langtry, Falcon Dam 

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

Mexican Section operated the stream gaging station on the main 

stem at Laredo. Each section operated the gaging stat'ons on the 

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 34 and 35 prepared jointly by 

the United States and Mexican Sections of the International Boundary and Water Commission. These publications contain stream 

discharge and related data for 1964 and 1965. Analyses for six 

Rio Grande main stem stations and for the Pecos Fiver near 

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

Riverside, Calif.
EXAMINATION OF SAMPLES

Additional contributions of data have been made frr 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 Committee, where 

practicable, one sample was collected each day throughout the 

water year. In general, each sample was taken in an 8- or 12- 

ounce polyethylene bottle provided with a bakelite cap and polyseal insert 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 vere 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 provid?d 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, vere 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.

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,
8 QUALITY FOR IRRIGATION, 1965

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 Committee 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 tors and tons 

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

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 develcned ethyl - 

enediamine tetraacetic acid titration test for hardness), sodium, 

dissolved solids, and specific conductance. In addition, four complete analyses (schedule 1) would be made each year, ore 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.

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
EXPLANATION OF TABLES

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 27 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 

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, percent sodium, and sodium 

adsorption ratio, 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 the sample from the field. Data for 

percent sodium and sodium adsorption ratio were obtained from 

composite-sample analysis.

Remarks include sources of data and additional explanation concerning the records.

Discharge records were obtained from the responsible Geological Survey Water Resources district offices except for the seven 

stations operated by the International Boundary an'! Water Commission. Discharge data are shown in acre-feet, calculated from 

the daily mean discharge in cubic feet per second by multiplying 

by the factor 1.983471.

Analytical values are reported in equivalents per million (epm) 

for cations and anions. An equivalent per million is a unit chemical

333-555 O - 69 - 2
10 QUALITY FOR IRRIGATION, 1965

combining weight of a constituent in a million unit weights of water. 

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 Committee, sodium rdsorption 

ratio (SAR) is published for all network stations beginning October 1952. The term is defined and described under "Sodium" on 

page 11.

A program for automatically converting and computing the analytical values which are given in this report was established in 

1962. Electronic digital computers perform the following calculations: Converting discharge values from cubic feet per second 

to acre-feet and constituent values from parts per million to 

equivalents per million; computing tons per acre-foot and total 

tons of the dissolved solids, percent sodium, sodium adsorption 

ratio, total discharge in acre-feet, total tons of dissolved solids, 

and discharge-weighted average of the individual constituents.

CRITERIA OF WATER QUALITY

The quality of an irrigation water is determined by the composition and concentration of the dissolved substances or solutes 

that are present in the water. The principal solutes are the cations; calcium, magnesium, and sodium, and the anions; bicarbonate, sulfate, and chloride. Boron, fluoride, and nitrate are usually present in low, but significant, concentrations. Small 

amounts of carbonate are found in many waters, as well as trace 

amounts of other less important constituents. The concentrations of the several ions show wide variations but, because of 

solubility limitations, sodium and chloride often predominate in 

more saline waters.

The analysis of an irrigation water should provide information 

on the suitability of its use and act as a guide for management 

practices. The first step in the interpretation of the analysis is 

the selection of criteria that will yield the type of information desired. The second step is the classification of the criteria in 

order to evaluate the water quality.
CRITERIA OF WATER QUALITY 11

There are four principal hazards related to the chemical character of water for irrigation use. These are: total concentration, 

sodium, bicarbonate, and boron of other phytotoxic substances. 

Criteria that measure these hazards have been worked out and 

are in general use.

Total concentration is probably the more important single criterion for irrigation water quality and may be expressed in terms 

of parts per million (ppm) of dissolved solids, or as specific conductance (micromhos at 25 °C). The latter is preferred. More 

than half of the irrigation waters in use in the Western States 

have specific conductance values below 750 micromhos (about 

500 ppm dissolved solids). Saline waters with specific conductance values greater than 2, 250 micromhos (about 1 , 500 ppm dissolved solids) make up less than 10 percent of the total number of 

waters and an even smaller fraction of the total quantity of water 

being used. There are very few waters with specific conductance 

values greater than 5, 000 micromhos (about 3, 200 ppm dissolved 

solids) that are being used successfully, although they can be used 

for certain crops under very special conditions. Such waters are 

important, however, in that they constitute the only available supply in many arid regions.

Sodium is essentially unique among the cations in its effect upon 

the soil. When present in the soil in exchangeable form, even at 

low concentrations as compared with the other cations, it causes 

adverse chemical and physical conditions to develop. Exchangeable sodium tends to make a moist soil impermeable to air and 

water. This type of soil, upon drying, is hard and difficult to till, 

and forms dense crusts that interfere with germination and seedlining emergence. The most reliable index of the sodium hazard, 

or the tendency of the irrigation water to form exchangeable sodium in the soil, is the sodium adsorption ratio, SAR (U.S. Salinity Laboratory Staff, 1954). It is a calculated value and is defined as:

SAR = Na

Ca++ + Mg++

where concentrations are expressed in equivalents per million.

A nomogram for determining the SAR value of an irrigation 

water with an exchangeable -sodium percentage (ESP) scale opposite the SAR scale is shown in figure 1 on page 12. The ESP 

scale is empirical but is based on a regression equation of high 

statistical significance. After the SAR value of an irrigation 

water is determined by use of the nomogram, it is possible to
12 QUALITY FOR IRRIGATION. 1965

Figure 1..- -Nomogram for determining the SAR value of irrigation water for estimating the 

corresponding ESP value of a soil that is at equilibrium with the water (U. S. Salinity Laboatory Staff, 1954).
CRITERIA OF WATER QUALITY

estimate from the central scale the ESP value of a soil that is at 

equilibrium with the irrigation water. Under field conditions, the 

actual ESP may be slightly higher than the estimated equilibrium 

value. This is because the total salt concentration of the soil solution is increased by evaporation and plant transpiration which 

results in a higher SAR and a correspondingly higher ESP.

Bicarbonate is important primarily in its relation to calcium 

and magnesium. There is a tendency for calcium to react with 

the bicarbonate and precipitate as calcium carbonate (CaCO3). 

The corresponding magnesium salt is more soluble so there is 

less tendency for it to precipitate but it may be lost from a water 

by an indirect reaction. Magnesium enters the exchange complex 

of the soil, replacing calcium which reacts with bicarbonate and 

precipitates as CaCO3 . Ordinarily, magnesium will not replace 

calcium to any great extent but, if calcium is precipitated as it 

is released, the reaction proceeds toward completic n.

As calcium and magnesium are lost from water, the relative 

proportion of sodium is increased with an attendant increase in 

the sodium hazard. This hazard can be evaluated in terms of the 

residual sodium carbonate (RSC) as proposed by Eaton (1950) and 

defined as:

RSC = (C03~~ + HC03") - (Ca++ + Mg++)

in which the concentrations are expressed in equivalents per million (epm). Studies by Wilcox et al. (1954) indicate that waters 

with more than 2.5 epm of RSC are probably not suitable for irrigation purposes. Water containing 1. 25 epm to 2. 5 epm are marginal, and those containing less than 1. 25 epm of RFC are probably safe. Some marginal waters, with good management practices 

and proper use of amendments, particularly gypsum, maybe made 

safe for irrigation use. A condition not provided for by the RSC 

concept has been encountered in recent years. If the concentrations of both calcium and bicarbonate are about eaual and high, 

i.e., in the order of 10 epm or greater, the RSC will be low or 

possibly zero. Such waters will precipitate some calcium carbonate and should be considered at least marginal.

Phytotoxic substances: Boron. The occurrence of boron in toxic 

concentrations in certain irrigation waters makes it necessary to 

consider this constituent when assessing the quality of water.

Plant species differ markedly in their tolerance to high concentrations of boron. In areas where boron occurs in excess in the 

soil or in the irrigation water, boron-tolerant crcns may grow 

satisfactorily, whereas sensitive crops may fail.
14 QUALITY FOR IRRIGATION, 1965

100 3 4 5678 1000 3 4 5000

C1-S4

C1-S3

C1-S2

C1-S1

C2-S4

C2-S3

C2-S2

C2-S1

I I I I I

I I I

C3-S4

C3-S3

C3-S2

C4-S4 -

C4-S3

C4-S2

100 250 750 2250

V CONDUCTIVITY-MICROMHOS/CM (EC*106) AT 25°C

1

LOW

2

MEDIUM

3

HIGH

4

VERY HIGH

SALINITY HAZARD

Figure 2.--Diagram for the classification of irrigation waters (U. S. Salinity Laboratory Staff, 1954).
CRITERIA OF WATER QUALITY 15

Other substances. Very few substances other than boron occur 

in toxic concentrations in natural waters. However, many substances in industrial wastes that are discharged into surface 

streams are probably toxic to plants. Wilcox (19C 9) assembled 

information on a number of such substances for which the phytotoxic properties are known. If the presence of pollutants is suspected, great care should be exercised in the use of the water for 

irrigation.

The quality of irrigation water is classified by the amount of 

critical material determined in a water analysis. A water analysis is classified by plotting, as coordinates, the numerical 

value for specific conductance and SAR on figure 2, p. 14. The 

position of the point determines the quality classification of the 

water. The significance and interpretation of these Quality ratings 

are summarized below.

Salinity Classification:

Cl. Low-salinity water can be used for irrigation with most 

crops on most soils, with little likelihood that a salinity problem 

will develop. Some leaching is required, but this occurs under 

normal irrigation practices except in soils of extremely low permeability.

C2. Medium-salinity water can be used if a moderate amount 

of leaching occurs. Plants with moderate salt tolerance can be 

grown in most instances without special practices for salinity 

control.

C3. High-salinity water cannot be used on soil with restricted 

drainage. Even with adequate drainage, special management for 

salinity control may be required, and plants with good salt tolerance should be selected.

C4. Very high-salinity water is not suitable for irrigation under 

ordinary conditions but may be used occasionally under very special circumstances. The soil must be permeable, drainage must 

be adequate, irrigation water must be applied in excess to provide 

considerable leaching, and very salt-tolerant crcns should be 

selected.

Sodium Classification:

SI. Low-sodium water can be used for irrigation on almost all 

soils, with little danger of the development of a sodium problem. 

However, sodium-sensitive crops, such as stone-fruit trees and 

avocados, may accumulate injurious amounts of eodium in the 

leaves.
16 QUALITY FOR IRRIGATION, 1965

52. Medium-sodium water may present a moderate sodium 

problem in fine-textured (clay) soils unless there is gypsum in 

the soil. This water can be used on coarse-textured (sandy) or 

organic soils that take water well.

53. High-sodium water may produce troublesome sod'um problems in most soils and will require special management good 

drainage, high leaching, and additions of organic matter. If there 

is plenty of gypsum in the soil, a serious problem may not develop 

for some time. If gypsum is not present, it or some similar material may have to be added.

54. Very-high sodium water is generally unsatisfactory for irrigation except at low- or medium-salinity levels where the use 

of gypsum or some other amendment makes it possible to use 

such water. (Wilcox and Durum, 1967.)

DISCUSSION OF RESULTS

MISSOURI BIVER BASIN

Missouri River main stem.--Runoff in the Missouri River basin 

of Montana was generally above median to excessive during the 

1965 water year. The weighted-average of dissolved-solids content for the Missouri River near Williston, N. Dak., was 426 ppm 

(0. 58 ton per acre-foot) as compared with 439 ppm (0. 60 ton per 

acre-foot) for 1964 and 422 ppm (0.57 ton per acre-foot) for the 

15-year period of record.

Yellowstone River basin. --Runoff from streams in tl <?. Yellowstone River basin was generally excessive in the 1965 water year. 

Consequently, concentrations of dissolved solids were as much 

as 25 per cent below aver age. The weighted average of dissolvedsolids content near Sidney, Mont., was 382 ppm (0. 52 ton per 

acre-foot) as compared with 403 ppm (0. 55 ton per acre-foot) for 

1964 and 432 ppm (0. 59 ton per acre-foot) for the 14-year period 

of record. At Bighorn River at Bighorn, where runoff vas among 

the highest in recent years, the weighted-average of dissolvedsolids content was 558 ppm (0.76 ton per acre-foot) as compared 

with 611 ppm (0. 83 ton per acre-foot) for 1964 and 713 ppm (0. 97 

ton per acre-foot) for the 13-year period of record. At Tongue 

River near Miles City, Mont., the weighted-aver age of dissolved-solids content was 452 ppm (0.61 ton per acre-foot) as 

compared with 376 ppm (0.51 ton per acre-foot) for 1964 and 

460 ppm (0. 62 ton per acre-foot) for the 13-year period of record.

James River basin. --Runoff in the basin in 1965 was low. The 

runoff of the James River at Huron, S. Dak., was only 63 percent
DISCUSSION OF RESULTS 17

of the 26-year aver age. The weighted-average of dissolved-solids 

content decreased from 640 ppm (0.87 ton per acre-foot) in 1964 

to 547 ppm (0. 74 ton per acre-foot) in 1965.

At Huron, samples are collected just upstream from the streamflow gage and just upstream from the diversion of water to the 

city of Huron. At times, the diversions exceed inf.ow so that no 

water passes the gage. The weighted averages for the James 

River at Huron reflect only the quality of the water that passes 

the gage.

Platte River basin. --Runoff was considerably higher than in 

1964. At the Colorado-Wyoming line runoff was 130 percent of 

the 50-year average. Release from Alcova Reservoir was only 

81 percent of the 32-year average. At the Wyoiring-Nebraska 

line the discharge was very close to the 37-year average. Storage in the main stream reservoirs except Guernsey increased 

during the year.

The chemical load above Seminoe Reservoir vas 69 percent 

higher than in 1964 and was 127 percent of average. At Glenrock 

the load was 106 percent of average and only slightly higher than 

in 1964. Flow at the Wyoming-Nebraska line was about half that 

at Glenrock and the chemical load was probably in about the same 

proportion.

LOWER MISSISSIPPI RIVER BASIN

Arkansas River basin.--Extensive flooding occurred in Arkansas River basin in Colorado during the summer in 1965. John 

Martin Reservoir had a maximum contents of 429, 000 acre-feet 

in Aug. 25, 1965, which was the highest for the 23 years of record. 

The flow of Arkansas River below John Martin F.eservoir was 

about470 percent of the 1964 flow, but only 108 percent of the average for the 27 years of record. The weighted average of dissolved-solids concentration decreased from 2,220 pnm (3.02 tons 

per acre-foot) in 1964 to 835 ppm (1.14 tons per acre-foot) in 

1965, and the sodium adsorption ratio decreased frcm 3.4 in 1964 

to 1.7 in 1965.

Runoff of the Arkansas River at Arkansas City, Kans., was 

about four times greater than in 1964 and nearly twice the longterm average. The relatively high flows resulted in significant 

improvement in water quality. The weighted average dissolvedsolids content of 528 ppm (0.71 ton per acre-foot) \ras 34 percent 

lower than the 15-year average. The sodium adsorption ratio decreased from 4. 9 in 1964 to 3. 2.
18 QUALITY FOR IRRIGATION, 1965

Runoff at the Arkansas River station at Van Buren, Ark., was 

three times greater than the 1964 runoff but 23 percert less than 

the 38-year average. The higher runoff resulted in a decrease of 

dissolved-solids content.

Red River basin.--Water discharge of the Red River at Denison 

Dam near Denison, Tex., during the 1965 water year vras 39 percent of the average for 42 years of record, but was about 30 percent greater than the 1964 average. The weighted average of 

dissolved-solids content was 1, 070 ppm (1. 46 tons per acre-foot) 

in 1965 as compared to 1,200 ppm (1.63 tons per acre-foot)in 1964.

WESTERN GULF OF MEXICO BASINS

In the Western Gulf of Mexico basins in Texas, streamflow was 

below normal in the Sabine and Neches basins and near normal 

or above from the Trinity River to the Nueces River. Streamflows were generally 3 to 7 times greater than the below normal 

streamflows of 1964. The weighted average of dissolved-solids 

content in 1965 was about the same as in 1964 for the Sabine and 

Neches. However, in Trinity River at Romayor, where streamflow equalled the 41 years average and was four times greater 

than in 1964, the weighted average of dissolved-solids content 

decreased from 351 ppm (0.48 ton per acre-foot) in 1964 to 219ppm 

(0. 30 ton per acre-foot) in 1965. Streamflow in Nueces River 

near Mathis in 1965 was more than 7 times the 1964 average and 

the weighted average of dissolved-solids content decreased from 

358 ppm (0. 49 ton per acre-foot) in 1964 to 238 ppm (0.32 ton per 

acre-foot) in 1965.

Rio Grande basin.--Streamflow in the middle Rio Grande substantially increased at all gaging stations when compared against 

the 1964 records. Rio Grande at Otowi Bridge, N. Mer., showed 

a three-fold increase bringing the annual average discharge to 

5 percent above median. The annual dissolved solids for all stations went up correspondingly, but the concentrations remained 

close to the 1964 values.

Streamf low on the Pecos River increased approximately 100 percent at most stations when compared against 1964 records, but 

was still less than half the long-term averages. The water quality 

improved, and the Pecos River at Artesia, N. Mex., showed a
DISCUSSION OF RESULTS 19

35 percent decrease in the weighted average of dissolved-solids 

content when compared against the 1964 value.

However, during the 1965 water year, streamflow of the Pecos 

River below Red Bluff Dam near Orla, Tex., was only half the 

1964 streamflow and less than 10 percent of the 29-year average. 

The weighted average of dissolved-solids content ir creased from 

9,080 ppm (12. 4 tons per acre-foot) in 1964 to 12,100 ppm (16.5 

tons per acre-foot) in 1965. Storage in Red Bluff Reservoir at the 

end of the 1965 water year was 53,000 acre-feet, only 17 percent 

of capacity.

COLORADO RIVER BASIN

Colorado River main stem. --The runoff of the Colorado River 

at Glenwood Springs, Colo., was 165 percent of the 1964 runoff, 

and as a result the weighted average of dissolved-solids content 

of the Colorado River near Glenwood Springs decreased from 

376 ppm (0. 51 ton per acre-foot in 1964 to 292 ppm (0. 40 ton per 

acre-foot) in 1965. The sodium adsorption ratio dropped from 

1.8 in 1964 to 1.2 in 1965.

The flow of the Colorado River near Cisco, Utah was 91 percent greater than that during 1964, was about 112 percent of the 

long-term average flow. Weighted average dissolved-solids content was 530ppm (0. 72 ton per acre-foot), which is about 200 ppm 

lower than that in 1964 and about 400 ppm lower than that in 1963.

The total flow (release) from Glen Canyon Dam (Lake Powell) 

during the 1964-65 water year was about 4^ times as great as the 

previous year. This large increase in flow from Lake Powell 

caused a 31 percent decrease in the dissolved-sol ids content of 

the water flowing past the station at Lees Ferry.

At the station near Grand Canyon the flow and salinity conditions were similar to those at Lees Ferry. The total flow for the 

year was slightly more than four times that of the 1963-64 water 

year and concentration of dissolved-solids was 37 percent less 

than the previous year.

Total release from Hoover Dam was slightly less than the 

total release during the 1963-64 water year, and th« concentration of dissolved-solids was about 14 percent higher. Perhaps 

the observed increase in dissolved-solids was caused by the 

higher-than-usual concentrations at Lees Ferry during the 1962-63 

water year.
20 QUALITY FOR IRRIGATION. 1965

Diversions and return flows at and below Imperial Dam. --The 

flow of Yuma Main Canal below Colorado River Siphon at Yuma, 

Ariz., was the same as the previous year, whereas, the dissolved-solids concentration increased about 8 percent.

Gunnison River basin. - - The runoff of Gunnison River near Grand 

Junction, Colo., increased again in 1965. The runoff was almost 

double that of 1964 and was 138 percent of the average of the 

57 years of record. The weighted average of dissolved-solids 

concentration decreased frim 714 ppm (0.97 ton per acre-foot) 

in 1964 to 476 ppm (0.65 ton per acre-foot) in 1965. The decrease in sodium adsorption ratio was less pronourced, going 

from 1.1 in 1964 to 0. 9 in 1965.

Green River basin. The flow at Green River at Greendale, 

Utah was nearly double that during 1964 and nearly ten times 

that during 1963 although the contents of Flaming Gorge Reservoir increased by about the same amount in 1963, 1964, and 1965. 

Weighted average dissolved-solids content was 557 ppm (0. 76 ton 

per acre-foot), which is about 100 ppm greater than during 1964 

and about 100 ppm less than that during 1963. Reservoir contents 

at the end of the 1965 water year may be approaching stability, 

but the data for 1965 should not be regarded as representative of 

pre-reservoir conditions or of conditions after reservoir stage 

becomes fairly stable.

The flow of Green River at Green River, Utah was 84 percent 

greater than that in 1964 and was 111 percent of the long-term 

average. Average dissolved-solids contents was 472 ppm (0. 64 

ton per acre-foot) about the same as that during 1964.

San Juan River basin. Discharges in the San Juan River basin 

were above median. The weighted average of dissolved-solids 

content for all water-quality stations showed up to 30 percent decreases with average concentrations less than 400 ppm.

The discharge at San Juan River near Bluff, Utah was 157 percent greater than that during 1964 and was 105 percent of the 

long-term average. Weighted average dissolved-solids content 

was about 400 ppm (0.54 ton per acre -foot), which is about 300 ppm 

less than that during 1964 and 450 ppm less than that during 1963.

Virgin River basin.--Flowat Virgin River at Littlefield, Ariz., 

was 36 percent greater than that during 1964 and was about 

75 percent of the long-term average. Average dissolved-solids 

content was 1, 690 ppm (2. 30 tons per acre-foot), which is about 

500 ppm less than that during 1964.
DISCUSSION OF RESULTS 21

Gila River basin. --Water from the Gila River at Kelvin contained 1,070 ppm (1.46 tons per acre-foot) weighted average of 

dissolved-solids content which was about 9 percent greater than 

the previous year. The total flow past the station was about 12 percent less than the 1963-64 water year.

The total flow of the Salt River below Stewart Mountain Dam 

was 54 percent less during 1964-65 water year and the weightedaverage concentration of dissolved-solids was 755 ppm (1.03 tons 

per acre-foot), which was about 8 percent greater than the previous year.

The total flow (release) from Bartlett Dam w>s 56 percent 

greater and the weighted average concentration of dissolvedsolids was 36percent less during the 1964-65 water year as compared to the 1963-64 water year.

The weighted-aver age concentration of the dissolved solids in 

the water below Gillespie Dam was 44 percent greater than the 

previous year. The total combined flow was 26 percent less than 

1963-64 water year.

THE GREAT BASIN

Sevier Lake basin.--Discharge of Sevier River below Piute 

Dam near Marysvale, Utah was 22 percent greater than that 

during the preceding year, and was 58 percent of the long-term 

average discharge. Weighted average dissolved-snlids content 

was 279 ppm (0.38 ton per acre-foot), which is about the same as 

that during 1964.

Average flow of Sevier River near Lynndyl, Utah (at gage) was 

121 cfs and was 118 cfs at the water-quality station. The flow 

was about 10 percent greater than that during 1964 and was 63 percent of the long-term average; a large well discharges into the 

stream between the water-quality station and the gaging station. 

Weighted average dissolved-solids content was 1,280 ppm (1.74 

tons per acre-foot), which is about 150 ppm less than that during 

1963 and 1964.

Carson River basin. --Flowof the Carson River increased considerably over that of the preceding water year. The flow was 

148 percent of the 54-year average and nearly three times that in 

1964. The greater flow decreased the weighted average specific 

conductance from 288 to 204 micromhos and the sodium adsorption ratio from 1.1 to 0.7. A boron value of 0.5 ppm was reported 

for the period May 15-31. This value is inconsistent with preceding and following composite periods.
22 QUALITY FOR IRRIGATION, 1965

Humboldt River basin. Runoff in the upper basin increased 

18 percent over that of 1964 and was 142 percent of the 58-year 

average. Changes in water quality from the preceding years were 

insignificant. Release from the Rye Patch Reservoir dropped 

3 percent from that of 1964 although a general improvement in 

chemical quality was noted. This is probably due to a flushing 

effect upon the reservoir by high flows of the last two y^ars.

Pyramid and Winnemucca Lakes basin. Flow in the basin was 

183 percent of that in the preceding year and 124 percent of the 

average for the 66-year period of record. Most chemical constituents decreased slightly in concentration over the preceding year 

and the ratios remained constant.

PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLUMBIA RIVER BASIN

Columbia River main stem.--No significant change in chemical 

quality occurred in the Columbia River at international boundary, 

during the 1965 water year. The total runoff increased to 81,120,000 

acre-feet which was greater than it was during the 1964 water 

year. This represents a 5. 0 percent increase over the 1964 total 

and is 13 percent higher than the 28-year average of 71, 960,000 

acre-feet per year.

Yakima River basin.--Runoff during the 1965 water year 

(3,051,000 acre-feet) in the Yakima River at Kiona was 70 percent greater than in the 1964 water year (1,796, 000 acre-feet) 

and 6 percent greater than the 50-year average (2,870,000 acrefeet). Although this increase in runoff was very large, variations 

in chemical quality were not as pronounced. The weighted average dissolved-solids content was 134 ppm (0.18 ton per acre-foot) 

or 35 ppm (0.05 ton per acre-foot) lower than the 19C4 weighted 

average.

SNAKE RIVER BASIN

Snake River main stem.--Runoff increased 22 percertat Heise, 

Idaho and 23 percent at King Hill, Idaho above that of the 1964 

water year. The average tons per day of dissolved-solids content 

increased 16 and 17 percent respectively. There was r. 5 percent 

decrease in the average dissolved-solids content at both stations.

Boise River basin. Runoff increased 215 percent above that of 

the 1964 water year, and the average dissolved-solids content
DISCUSSION OF RESULTS 23

Summary of water discharge, and tonnages of dissolved solids--1964-65

Station

Runof:' 

(acre-foot)

Dissolved

solids

(tons per

acre-foot)

Red River of the North basin:

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

Missouri River main stem:

Missouri River near Culbertson, Mont.................

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

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

Yellowstone River basin:

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

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

Wind River below Boysen Reservoir, Wyo..............

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

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

James River basin:

James River at Huron, S. Dak........................

Platte River basin:

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

Platte River near Overton, Nebr ......................

Supply Canal (Tri-County diversion) near Maxwell, Nebr.

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

Arkansas River basin:

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

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

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

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

Red River basin:

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

Washita River near Durwood, Okla....................

Sabine River basin:

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

Neches River basin:

Neches River at Evadale, Tex .............. /?"........

Trinity River basin:

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

Brazos River basin:

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

Colorado River basin:

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

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

Guadalupe River basin:

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

Nueces River basin:

Nueces River near Mathis, Tex.......................

Rio Grande basin:

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

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

Rio Grande conveyance channel at San Marcial, N. Mex .

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

Rio Grande at El Paso, Tex ..........................

Rio Grande at Fort Quitman, Tex .....................

Rio Grande above Rio Conchos, near Presidio, Tex.....

Rio Grande at Langtry, Tex ..........................

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

Rio Grande below Falcon Dam, Tex ...................

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

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

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

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

34,951

14,204,468

24,575,409

6,712,586

12,560,633

1,447,880

3,965,926

435,420

96,142

330,929

899,530

955,194

435,425

280,086

2,290,515

17,027,341

367,006

1,406,401

590,496

2,954,992

1,200,971

5,308,671

7,430,456

1,067,628

1,721,670

1,311,949

569,899

418,649

1,177,868

527,238

294,325

199,508

815,151

2,093,870

2,530,571

102,285

85,928

5,992

209,528
24 QUALITY FOR »RIGATION. 1965

Summary of water discharge, and tonnages of dissolved solids 1964-65 Continued

Station

Colorado River main stem:

Diversions and return flows at and below Imperial Dam: 

Yuma Main Canal below Colorado River siphon, at 

Yuma, Ariz. 

Gunnison River basin:

Green River basin:

San Juan River basin:

Virgin River basin:

Gila River basin:

Sevier Lake basin:

Carson River basin:

Humboldt River basin:

Pyramid and Winnemucca Lakes basin:

Columbia River main stem:

Yakima River basin:

Snake River main stem:

Boise River basin:

Columbia River main stem:

Willamette River basin: 

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

Runo*f 

(acre-feet)

1,660,628

6,403,784

10,819,975

10,982,057

326,058 

2,610,809

1,612,055

5,133,943

1,288,912

1,104,636

2,027,599

120,491

258,331

13,153

202,229

623,621

84,537

382,085

369,844

134,266

695,157

77,876,628

3,051,052

6,160,980

9,051,768

2,281,577

162,494,078

21,405,567

Dissolved 

solids 

(tons per 

acre-foot)

0.40

1.21

.83

.89

1.24 

.65

1.62

.64

.17

.24

.54

2.30

1.46

6.96

1.03

.28

1.74

.19

.37

.67

.08

.12

1.18

.27

.42

.18

.13

.06
SELECTED REFERENCES 25

decreased 49 percent, however, the average tons per day of dissolved-solids loads increased 62 percent.

PACIFIC SLOPE BASINS IN OREGON AND LOWER COLUMBIA RIVER BASIN

Columbia River main stem. --In the 1965 water year the runoff 

increased 21 percent with no significant change in the chemical 

quality when compared to the 1964 water year.

Willamette River basin. --Runoff in the 1965 wr.ter year was 

25 percent greater than in the 1964 water year. The average dissolved-solids content decreased from 53 ppm (0.07 tons per acrefoot) in 1964 to 47 ppm (0.06 tons per acre-foot) in 1965. The average tons per day increased 14 percent.

Discharge data and dissolved-solids loads for stations operated 

in 1965 are summarized in the table on p. 23 .

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 a 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). 

Kelly, W. P., 1951: Alkali soils their formation, properties and

reclamation, Am. Chem. Soc., mono. ser. Ill, p. 91-111. 

Magistad, O. C., and Christiansen, J. E., 1944, Salir° soils, their

nature and management: U. S. Dept. Agriculture Circ. 707, p. 8-9. 

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

policyfor 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.

 1940, Salt balance in irrigated areas: Jour. Agriculture 

Res., v. 61, no. 1, p. 17-40.

 1949, Trends of irrigation development in the United States; 

Synposium, Am. Chem. Soc., p. 1-11 (mimeographed).

333-555 O -
26 QUALITY FOR IRRIGATION, 1965

Straus, Michael, 1952, Use of water for irrigation, The physical 

basis of water supply and its principal uses: Interior and Insular Affairs Committee, U. S. House of Representatives; v. 2.

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

Utah; Utah Agriculture Expt. Sta. Bull. 349.

U.S. Geol. Survey 1951-65, Quality of surface waters for irrigation, Western United States: Water-Supply Papers, 1264, 1362, 

1380, 1430, 1465, 1485, 1524, 1575, 1699, 1746, 1P86, 1946, 

1952, 1960, 1967.

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

of saline and alkali soils; U.S. Dept. Agriculture, Agriculture, 

Handbook 60, p. 1-160.

Wilcox, L. V., 1955, Classification and use of irrigation waters; 

U. S. Dept. Agriculture Circ. 969.

 1957, Discharge and salt burden of the Rio Grande above 

Fort Quitman, Tex., and salt balance conditions of the Rio 

Grande project for the year 1956: U.S. Dept. Agriculture, Salinity Laboratory research report no. 85, 26 p.

Wilcox, L. V., and Durum, W. H., 1967, Irrigation of agricultural lands; quality of irrigation water: Madison, Wir., Amer. 

Soc. Agronomy, Agronomy mon. no. 11, sec. 3, Chap. 9, 

p. 104-119.
PART 5. HUDSON BAY AND UPPER MISSISSIPPI 

RED RIVER OF THE NORTH BASIN 

5-560. SHEYENNE RIVER NEAR WARWICK, 

1964. 

, 9: minimum d

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

DRAINAGE AREA.--2,070 square miles, approximately, of which about 1,310 square miles is probab

RECORDS AVAILABLE.--Chemical analyses: January 1951 to September 1965.

Water temperatures: January 1951 to September 1962, October 1963 to Septembe 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,340 micromhos Mar.

Percent sodium: Maximum, 50 Apr. 21-25; minimum, 22 Mar. 1-6.

Sodium-adsorption-ratio: Maximum, 2.75 Apr. 1-7: minimum, 0.91 Mar. 1-6. 

EXTREMES, 1951-65.--Specific conductance: Maximum daily, 1,940 micromhos Feb. 1, 1955: minim

Percent sodium: Maximum, 66 July 8-18, 1955; minimum, 10 Aug. 15-31, 1959, Oct. 1-15, 1963

Sodium-adsorption-ratio (1961-64): Maximum, 2.75 Apr. 1-7; minimum, 0.35 Sept 

REMARKS. Values reported for sodium (Na) are determined by analysis 

discharge.

Chemical analyses

22-30, 1963.

and do not include potass

ater year October 1964 

Date 

of 

collection

Oct. 1, 1964....

Nov. 26-Dec. 15.

Jan. 1-31, 1965.

Mar. 10-19......

Apr. 8-10.......

Runoff 

(acrefeet)

34 

200 

766 

446 

309

124 

123 

172 

31 

34

99 

424 

169 

305 

1.172

Silica 

(Si02) 

ppm

13

"

24.

Equivalents per million

Calcium

(Ca)

Magnesium

(Mg)

2.25| 2.06 

2.98 

6.80 

6.80 

6.48

6,56 

5.68 

6.08 

5.34 

8.10

10.16 

2.99 1.81 

5.46 

6.38 

4.36

Sodium

(Na)

3.61 

1.87 

3.57 

3.61 

3.09

2.91 

2.09 

2.13 

1.48 

4.26

5.87 

1.70 

2.13 

4.92 

1.44

Potassium 

(K)

0.21

--

--

.24

_

Bicarbonate 

(HCOa)

6.21 

3.82

8.28 

7.60

6.24 

6.56

8.57

12.00 

4.97 

5.80 

8.15 

4.65

Carbonate 

(C03)

0.00 

.00

.00 

.00

.00 

.00

.83

.00 

.00 

.00 

.20 

.00

Sulfate 

(SO,)

1.42

"

1.25

2.37 

1.06

Chloride

(ci)

0.39

.28

Fl

ri

(F

0
QUALITY FOR IRRIGATION, 1965

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m 

1"

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1

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t~

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cn 

**

Potalr 

weighted average
LOCATION. At gaging station at bridge of State Highway 16, 3 mil

mile 1,620.76.

DRAINAGE AREA. 91,557 square miles.

RECORDS AVAILABLE.--Chemical analyses: July to September 1965 

Water temperatures: July to September 1965.

PART 6. MISSOURI RIVER BAS

MISSOURI RIVER MAIN STEM 

6-1855. MISSOURI RIVER NEAR CULBERT

itheast of Culbertson, R

Chemical analyses, JuJ.y to September 

Date 

of 

collection

July 1-9, 1965..

Sept. 1-15......

Runoff 

(acrefeet)

307,398 

337,567 

388,840 

460,264 

479,524 

453,124 

478,711

Silica 

(Si02) 

ppm

7.7 

8.0 

8.6 

7.5 

7.3 

7.5 

7.5

Equivalents per million

Calcium

(Ca)

2.89 

2.59 

2.69 

2.79 

2.89 

2.89 

2.84

Magnesium

(Mg)

1.40 

1.48 

1.65 

1.65 

1.56 

1.56 

1.65

Sodium

(Na)

2.31 

2.09 

2.00 

2.09 

2.04 

2.00 

2.09

Potassium 

(K)

0.12 

.12 

.12 

.11 

.11 

.11 

.11

Bicarbonate 

(HCOJ

3.13 

3.08 

3.11 

3.08 

3.13 

3.16 

3.15

Carbonate 

(CO,)

0.00 

.00 

.00 

.00 

.00 

.00 

.00

Sulfate 

(S0 4 )

3.46 

3.14 

3.21 

3.25 

3.25 

3.25 

3.39

Chloride

(Cl)

0.24 

.16 

.21 

.23 

.24 

.24 

.23

F

r

0
MISSOURI RIVER MAIN STE

6-3300. MISSOURI RIVER NEAR WILLIST

LOCATION.--At gaging station at Lewis and Clark Highway Bridge, 5 Biles southwest of Willisto

and at Bile 1,552.7.

DRAINAGE AREA.-.164,500 square miles, approximately. 

RECORDS AVAILABLE.-.Chemical analyses: December 1950 to June 1965 (discontinued).

Water temperatures: Hay 1951 to June 1965 (discontinued). 

EXTREMES, October 1964 to June 1965.--Specific conductance: Maximum daily, 981 micromhos Nov

Percent sodium: Maximum, 39 Apr. 14-30; minimum, 27 June 13-16.

Sodium-adsorption-ratio: Maximum, 1.90 Apr. 14-30; minimum, 92 June 13-16. 

EXTREMES, 1950-65.--Specific conductance (1950-65): Maximum daily, 1,360 micromhos Dec. 28, 

Percent sodium: Maximum, 44 Aug. 7-19, 30, 1964; minimum, 24 May 27 to June 2, 1956.

Sodium-adsorption-ratio (1961-65): Maximum, 2.27 Aug. 29 to Sept. 19, 1963; minimum, 92 Ju

REMARKS.-.Values reported for sodium (Na) are determined by analysis and do not include pota

discharge. Some spectrographic data available in district office at Lincoln, Nebr.

Chemical analyses, year October 19

Date 

of 

collection

Oct. 1-Nov. 1,

Nov. 2..........

Nov. 18-Dec. 7..

Jan. 1-25, 1965. 

Jan. 26-Feb. 14.

Runoff 

(acrefeet)

840,357 

26,380 

394,810 

402,248 

668,826

941,653 

706,116 

303,868 

271,577 

474,843

40,066 

228,853 

392,489 

225,719 

436,344

Silica 

(Si02) 

ppm

8.1 

8.9

9.1

Equivalents per million

Cal- Magnecium slum

(Ca) (Mg)

5.36 

3.24 2.14 

5.32 

5.98 

3.34 2.14

5.36 

5.14 

4.49 

4.70 

3.04 1.81

.94 

.82

' !?0 

.12

Sodium 

(Na)

2.91 

2.91 

2.91 

3.31 

2.78

2.61 

2.57 

2.39 

2.39 

2.39

2.70 

2.52 

2.65 

2.57 

2.39

Potassium

(K)

0.13 

.10

"

.10

-

Bicarbonate 

(HCOJ

3.47 

3.47 

3.47 

3.90 

3.64

3.41 

3.25 

3.15 

3.15

2.85 

3.10 

3.33 

3.16

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00

Sulfate 

(SO,)

4.66 

4.21

3.85

Chloride

(Cl)

0.28 

.31

.31
May 1- June 12 ...

Total or 

weighted 

average

3,495,154

14,204,468

_~_

--

4,41

4.58

4,04

3.60

2.88

4.44

2.87

2.26

2.31

___"

2.88

2.84

.00

0.00

_

3.25

2.42

--

_~_

--
MISSOURI RIVER MAIN STEM--Cont

6-8070. MISSOURI RIVER AT NEBRASKA C

LOCATION. At gaging station at Waubonsie Highway Bridge at Nebraska City, Otoe County, a

DRAINAGE AREA. 414,400 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: January 1951 to September 1965.

Water temperatures: May 1951 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 942 micromhos Dec. 23; minimum 

Percent sodium: Maximum, 41 July 1-31; minimum, 22 Apr. 3-9.

Sodium-adsorption-ratio: Maximum, 2.10 July 1-31; minimum, 0.72 Apr. 3-9. 

EXTREMES, 1951-65. Specific conductance: Maximum daily, 994 micromhos Dec. 17, 1962; m

Percent sodium: Maximum, 48 May 29, 1956; minimum, 16 Apr. 11-15, 1960, Apr. 1-5, 1962

Sodium-adsorption-ratio (1961-65): Maximum, 2.19 Aug. 19, 1964; minimum, 0.46 Apr. 1-5, 

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include p

available in district office at Lincoln, Nebr, Daily samples for chemical analysis com

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-15, 1964.

Nov. 1-15, 17-30

Jan. 1-29, 1965. 

Jan. 30-Feb. 6..

Feb. 28.........

Runoff 

(acrefeet)

987,174 

68,628 

1,014,843 

1,864,245 

70,215

490,949 

26,777 

328,225 

784,007 

177,560

196,126 

217,388 

189,620 

101,931 

52.364

Silica

(Si02) 

ppm

12 

11

_

Equivalents per million

Calcium

(Ca)

Magnesium 

(Mg)

4.88 

3.14 1.56 

4.92 

4.92 

3.29 1.65

5.58 

5.80 

5.60 

5.08 

5.22

4.62 

4.42 

3.82 

3.68 

3.28

Sodium 

(Na)

3.05 

3.00 

3.13 

3.13 

3.13

3.44 

3.18 

3.39 

3.09 

3.05

2.78 

2.65 

2.26 

1.78 

1.52

Potassium 

(K)

0.15

.14

"

_

Bicarbonate 

(HC03)

3.33 

3.21 

3.33 

3.25 

3.20

3.98 

4.46 

4.06 

3.62

3.39 

3.28 

2.88 

2.80 

2.57

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

4.08 

4.35

~

Chloride

(Cl)

0.51 

.48

--

~
Mar. 1, 1965....

Sept. 1-30......

Total or 

weighted 

average

133,289

273 124

2,687,207

24,577,409

14

"

2.82

3 08

3 72

4 64

2.79 1.56

4.50

.00

52

57

2.44

2.44

_

.17

"

2.29

2 gg 2*51

4 13

2 98

 "on

3 23

3 20

3.16

3.21

.00

.00

0.00

3.54

"

45 '

.45

-

*
YELLOWSTONE RIVER BASIN

6.2145. YELLOWSTONE RIVER AT BILLINGS

LOCATION...At gaging station at City of Billings water department intake, 1 Bile east of Billi

and at Bile 347.8.

DRAINAGE AREA...11,783 square Biles. 

RECORDS AVAILABLE.--Chemical analyses: October 1950 to September 1958, July 1963 to September 

Water temperatures: December 1950 to September 1958, July 1963 to September 1965. 

EXTREMES, 1964.65...Specific conductance: Maximum daily, 709 micromhos Dec. 21; minimum dally

Percent sodium: Maximum, 28 Oct. 1-16, Feb. 18.22, Aug. 1.19; minimum, 18 June 1-15.

Sodium.adsorption.ratio: Maximum, 1.23 Dec. 19.21; minimum, 0.33 June 1-15. 

EXTREMES, 1950.58, 1963.65...Specific conductance: MaxiBun daily, 1,210 micrombos Feb. 2, 195

Percent sodium: Maximum, 37 Dec. 1, 1950; minimum, 13 May 20.23. June 15, 1956.

Sodium-adsorption.ratio (1963.65): Maximum, 1.92 Apr. 26, 27, 1964; minimum, 0.33 June 10.1

REMARKS..-Daily samples for chemical analysis composited by discharge.

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-16, 1964.

Dec. 1-18. ......

Dec. 19-21. ..... 

Dec. 22-31. .....

Jan. 1-31, 1965.

Feb. 18-22. .....

Feb. 23-Mar. 15. 

Mar. 16-21......

Mar. 22-31. .....

Apr. 1-17. ...... 

Apr. 18-30. .....

Runoff 

(acrefeet)

90 , 700 

97 , 944 

108,684 

93,719 

92,826

9,919 

81,620 

208,873 

103,821 

39,868

133,206 

27,669 

52,364 

155,006 

151.204

Silica 

(Si02 ) 

ppm

15 

15 

16 

17 

16

19 

18 

17 

17 

13

16 

16 

16 

13 

13

Equivalents per million

Calcium 

(Ca)

2.25 

2.30 

2.20 

2.30 

2.35

3.34 

2.25 

2.15 

2.25 

1.80

2.15 

2.25 

2.25 

2.15 

1.85

Magnesium 

(Mg)

1.40 

1.40 

1.32 

1.32 

1.23

2.14 

1.15 

1.32 

1.23 

1.07

1.23 

1.32 

1.23 

.99 

.99

Sodium

(Na)

.44 

.39 

.31 

.31 

. 26

.04 

.22 

.17 

.35 

.13

.26 

.31 

.31 

.17 

.91

Potassium 

(K)

0.09 

.09 

.08 

.09 

.09

.09 

.09 

.08 

.09 

.08

.09 

.09 

.09 

.09 

.08

Bicarbonate 

(HCOa)

2.95 

2.88 

2.79 

2.87 

2.80

3.77 

2.62 

2.61 

2.67 

2.26

2.57 

2.74 

2.70 

2.52 

2.38

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

.98 

.92 

.89 

.89 

.92

.29 

.77 

.79 

.98 

.58

.00 

.83 

.92 

.64 

1.19

Chloride 

(Cl)

0.21 

.20 

.20 

.20 

25

.20 

.20 

.21 

.21 

.19

.22 

. 25 

.24 

18 

.15

F

r

(

0
May 1-15, 1965. .

May 16-31. ......

June 1-9. .......

June 10-15. .....

une 16-20. .....

une 21-30. .....

uly 1-12. ......

uly 13-31. .....

ug. 1-19. ......

ug. 20-31. .....

Sept. 1-15. .....

Sept. 16-30. ....

Total or

weighted

average

258,932

439,220

460,026

479,365

370,314

788,033

774,030

706,612

346,183

233,304

185,117

224,747

6,712,586

13

12

14

13

13

12

11

11

11

12

13

14

13

1.55

1.25

.90

.80

.90

.85

75

.90

1.20

1.60

1.65

1.75

1.28

.90

.51

.40

.32

.38

33

.35

.44

.64

.82

.99

.90

0.65

.83

.48

.28

.25

.34

30

.33

.48

74

.91

.96

.96

0.65

.06

.05

03

.04

.04

.04

.04

.04

.06

.07

.07

.07

0.05

.11

.61

26

.08

.23

.15

.08

26

.70

.20

.25

.29

1.69

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

0.00

1.06

.56

31

^25

.37

.29

.31

.48

.79

1.08

1.21

1.23

0.79

.12

.07

06

.05

07

.06

.06

.10

10

12

.14

.13

0.11

0 
YELLOWSTONE RIVER BASIN Contin

6-3295. YELLOWSTONE RIVER NEAR SIDNE

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

and 30 miles from mouth. 

DRAINAGE AREA. 69,103 square miles. 

RECORDS AVAILABLE.--Chemical analyses: October 1950 to September 1965.

Water temperatures: January 1951 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 994 micromhos Apr. 21: minimum daily

Percent sodium: Maximum, 46 Mar.22-31; minimum, 26 May 19-31.

Sodium-adsorption-ratio: Maximum, 2 22 Apr. 1-14; minimum, 84 May 19-31. 

EXTREMES, 1951-65.--Specific conductance: Maximum daily, 2,780 micromhos Jan. 14, 1951: mini

Percent sodium: Maximum, 48 May 1-30. 1953; minimum, 7 Aug. 11-29, 1964.

Sodium-adsorption-ratio (1961-65): Maximum, 2.62 Aug. 30 to Sept. 13, 1964: minimum, 0.16 

REMARKS.--Values reported for sodium (Na) are determined by analysis and do not include potas

sampling point.

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-20, 1964. 

Oct. 21-31......

Nov. 19-30......

Dec. 1-16.......

Jan. 1-31, 1965.

Feb. 21-28......

May t-18........

Runoff 

(acrefeet)

260,390 

158,487 

261,628 

158,233 

169,976

147 , 957 

440,128 

270,347 

171,213 

443,603

129,322 

765,580 

444,615 

570,526 

569,336

Silica 

(SiOJ 

ppm

13 

16

Calcium

(Ca)

Equivalents per million

Magnesium 

(Mg)

6.72 

5.86 

6.84 

6.14 

5.76

5.58 

3.79 2.47 

5.14 

5.04 

3.08

2.94 

4.08 

5.80 

4.90 

2.00 .82

Sodium

(Na)

3.52 

3.52 

3.57 

3.61 

3.35

3.26 

3.39 

3.13 

3.05 

2.31

2.48 

3.18 

3.57 

2.65 

1.00

Potassium

(K)

0.10 

.06

Bicarbonate 

(HCOj)

3.57 

3.57 

3.47 

3.67 

3.59

3.44 

3.80 

3.18 

3.13 

2.23

2.21 

1.84 

3.54 

3.02 

2.16

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(SO,)

5.48 

5.52 

5.52 

5.62 

5.08

4.96 

5.33 

4.83 

4.62 

3.04

2.96 

5.04 

5.45 

4.52 

1.58

Chloride

(Cl)

0.42

.11

F

0
June 1-10, 1965.

Sept. 18-30. ....

Total or 

weighted 

average

634,116

889,190

322,314

12,560,633

--

"

2.56

2.64

2.68

4.80

4.68

3.76

1.61

2 57

2.78

2.13

--

"

2.18

3.06

2.59

.00

.00

0.00

2.02

1.96

1.83

4.08

4.04

3.14

--

.28

-
YELLOWSTONE RIVER BASIN Contin

6-2590. WIND RIVER BELOW BOYSEN RESERV

LOCATION. At tailrace of powerplant at Boysen Dam, 0.6 mile upstream from gaging station,and 

DRAINAGE AREA. 7,701 square miles upstream from gaging station.

RECORDS AVAILABLE. Chemical analyses: November 1953 to September 1954, December 1960 to Sep

Water temperatures: December 1953 to September 1954, December 1960 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 879 micromhos Mar. 22; minimum daily

Percent sodium: Maximum, 42 Mar. 16-31; minimum, 35 July 10 to Aug. 25.

Sodium-adsorption-ratio: Maximum, 2.23 Mar. 16-31; minimum, 1.27 Aug. 19-25. 

EXTREMES, 1953-54, 1960-65. Specific conductance: Maximum daily, 1,380 micromhos June 18, 1

Percent sodium: Maximum, 51 June 18-19, 1954; minimum, 35 July 10 to Aug. 25, 1965.

Sodium-adsorption-ratio (1963-65): Maximum, 3.04 Apr. 1-3, 1964; minimum, 1.27 Aug. 19-25, 

REMARKS. Daily samples for chemical analysis composited by equal-volume.

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-15, 1964. 

Oct. 16-31. .....

Nov. 1-12. ... .

Nov. 13-30. .....

Dec. 1-15. ......

Dec. 16-31. .....

Jan. 1-31, 1965. 

Feb. 1-28. .....

Mar. 1-15. ......

Apr. 17-30. .....

May 1-31. .

June 1-11. ......

June 12-30. .....

Runoff

(acrefeet)

28,711 

31,101 

23,659 

36,417 

30,942

47 , 064 

76,306 

66,422 

44,598 

48,333

50,650 

45,707 

88,665 

29,193 

146,485

Silica 

(Si02) 

ppm

9.0 

8.9 

8.7 

8.7 

8.5

8.6 

9.5 

8.8 

9.9 

9.8

9.4 

9.4 

6.3 

8.1 

8.3

Equivalents per million

Calcium

(Ca)

2.20 

2.40 

2.50 

2.54 

2.74

2.74 

2.79 

2.79 

2.99 

3.19

3.04 

2.99 

2.99 

2.59 

2.40

Magnesium

(Mg)

1.23 

1.40 

1.32 

1.32 

1.23

1.40 

1.48 

1.56 

1.40 

1.56

1.65 

1.73 

1.73 

1.97 

1.48

Sodium

(Na)

2.44 

2.61 

2.70 

2.70 

2.78

2.83 

3.00 

3.05 

3.09 

3.44

3.26 

3.26 

3.18 

3.13 

2.52

Potassium

(K)

0.06 

.08 

.07 

.07 

.06

.06 

.06 

.08 

.07 

.07

.07 

.07 

.06 

.07 

.06

Bicarbonate

(Hccg

2.33 

2.46 

2.54 

2.54 

2.59

2.66 

2 79 

2.79 

2.84 

2.95

2.93 

2.93 

2.90 

2.84 

2.51

Carbonate

(C03)

Sulfate 

(S04 )

3.41 

3.69 

3.79 

3.75 

3.93

4.12 

4.33 

4.50 

4.41 

4.98

4.81 

4.85 

4.93 

4.43 

3.71

Chloride

(Cl)

0.19 

.17 

.21 

.23 

.21

.23 

.25 

.24 

.23 

.26

.25 

.25 

.24 

.26 

.22

F

r

0
July 1-9, 1965. .

July 10-23. .....

July 24-31. .....

Aug. 1-9. .......

Aug. 10-18. .....

Aug. 19-25. .....

Aug. 26-31. .....

Sept. 1-10. .....

Sept . 11-20. ....

Sept. 21-30. ....

Total or

weighted

average

138,722

215,484

84,512

57,660

37,595

23,199

19,018

24,873

21 , 898

25,666

1,447,880

8.9

8.8

8.6

8.7

9.1

9.3

9.2

10

10

10

8.8

2.05

1.90

1.70

1.75

1.80

1.65

1.80

1.95

2.00

2.10

2.35

1.15

1.32

.99

.90

.80

.90

.80

.90

.90

.82

1.32

.91

.74

.48

.48

.48

.44

.52

.61

.70

.83

2.35

.05

.05

.05

.08

.09

.07

.06

.05

.06

.06

0.06

2.13

2.05

1.87

1.88

1.85

1.82

1.88

1.98

2.02

2.10

2.39

2.94

2.85

2.21

2.21

2.21

2.12

2 21

2.39

2.50

2.71

3.52

.17

.15

.13

.12

.12

.10

.13

.14

.16

.16

0.120
YELLOWSTONE RIVER BASIN--Contir

6-2947. BIGHORN RIVER AT BIGHORN, 

0.8 mile rom mouth, 1 mil

LOCATION. At gaging station at bridge on U.S. Highwa

DRAINAGE AREA. 22,885 square miles.

RECORDS AVAILABLE.--Chemical analyses: February 1950 to September 1965.

Water temperatures: April 1949 to September 1951, August 1952 to November 1958, June 1959 t

Sediment records: July 1947 to September 1954, October 1955 to September 1958, October 1959 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,440 micromhos Dec. 22: minimum dai

Percent sodium: Maximum, 41 Nov. 25-30; minimum, 30 June 12-22.

Sodium-adsorption-ratio: Maximum, 2.59 Nov. 25-30; minimum, 1.23 July 10-15. 

EXTREMES, 1947-65.--Specific conductance (1951-65): Maximum daily, 1,940 micromhos July 10, 1

Percent sodium: Maximum, 49 May 23, 1952: minimum, 27 June 20-21, 1955.

Sodium-adsorption-ratio (1961-65): Maximum, 2.97 Aug. 24-31, 1963: minimum, 1.15 June 29 to 

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potass

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-18, 1964.

Nov. 1-24. .....

Nov. 25-30. .....

Dec. 24-31. ..... 

Jan. 1-19, 1965.

Feb. 1-15. ......

Mar. 1-16. ......

Mar. 17-31 ....

Apr. 19-30. .....

June 1-11. ......

Runoff 

(acrefeet)

105,858 

82,899 

139,620 

30,442 

88,939 

14 , 678

56,727 

119,615 

80,521 

99,669 

120,004 

162,645

134,093 

205,111 

93,421 

172,715 

119,532 

149,782

Silica 

(Si02) 

ppm

15

Equivalents per million

Cal- Magnecium slum 

(Ca) (Mg)

7.40 

7.32 

7.38 

7.18 

8.18 

6.19 3.70

7.04 

4.54 2.71 

4.39 2.55 

6 60 

5.72 

5.96

6.84 

6.74 

6.94 

6.40 

5.44 

4.66

Sodium 

(Na)

4.79 

4.65 

4.79 

4.92 

4.79 

5.66

4.26 

4.05 

4.09 

3.61 

3.13 

3. 39

3 96 

3.83 

3.87 

3.70 

2 57 

2.09

Potassium 

(K)

0.13

Bicarbonate 

(HCO3)

3.80 

3 80 

3.56 

3.23 

4 31 

5 02

3.87 

4.02 

3.80 

3.59 

3.21 

3.34

3 79 

3 51 

3.84 

3.64 

3 26 

2.97

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

Sulfate 

(SO,)

7.70 

7 45 

7.93 

8 08 

7.93 

10.51

6.81 

7 02 

7.06 

6.14 

5.25 

5 68

6.60 

6.56 

6.48 

6.08 

4.46 

3.58

Chloride

(Cl)

0 54

F

r

(

0 
June 12-22, 1965

June 28- July 9. .

July 16-31. .....

Aug. 1-12. ...... 

Aug. 13-22. .....

Sept . 1-15. .....

Sept. 16-30. ....

Total or 

weighted 

average

291,055

461,752 

197,792

364,324

115,581 

56,410

85,478

134,241

3,965,926

12

__"

4.30

3.76

4,00

5.00 

3.84 I 2.14

6.82

6.58

5.51

1.87

1.91

2 04

2.96 

3 87

4.44

3.09

__

---

2 85

2.69

2.70

2.95 

3.28

3 62

3 65

3.21

00

00

.00

00 

.00

.00

00

0.00

3.16

3 12

3.06 

4.87

6 95

5.10
YELLOWSTONE RIVER BASIN--Conti

6-3085. TONGUE RIVER AT MILES CIT

LOCATION. At gaging station, 4 miles south of Miles City, Custer County, and 8 miles upstrea

DRAINAGE AREA. 5,379 square miles.

RECORDS AVAILABLE.--Chemical analyses: January 1951 to September 1965.

Water temperatures: April 1949 to September 1965.

Sediment records: June 1946 to September 1951. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,100 micromhos Apr. 26; minimum da

Percent sodium: Maximum, 34 July 5-21; minimum, 16 June 21-26.

Sodium-adsorption-ratio: Maximum, 1.46 Dec. 16-31; minimum, 0.47 June 21-26. 

EXTREMES, 1949-65. Specific conductance (1951-65): Maximum dally, 2,390 micromhos Sept. 11, 

Percent sodium: Maximum, 69 May 4, 1955: minimum, 15 June 13-16, 1964.

Sodium-adsorption-ratio (1961-65): Maximum, 3.39 July 30 to Aug. 6, 1963: minimum, 0.45 Jun

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include pota

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-17, 1964. 

Oct. 18-31. .....

Jan. 1-17, 1965. 

Jan. 18-31. .....

Feb. 1-18. ......

Mar. 1-18. ......

Mar. 31-Apr. 6. .

May 1-21. .......

Runoff 

(acrefeet)

6,440 

6,359 

6,823 

4,637 

6,516

3,808 

5,226 

8,386 

12,639 

13,964

23,992 

11,568 

38 , 876 

63,408 

36.280

Silica 

(SiO2) 

ppm

6.9 

6.1

Equivalents per million

Calcium 

(Ca)

6 

6 

6 

7 

8

9 

9 

7 

3 79 

2.50

6 

8 

1.90 

6 

7

Magnesium 

(Mg)

.54 

.90 

.94 

.62 

.40

.20 

.06 

.20 

4.11 

2.55

.02 

.46 

.90 

.84 

.26

Sodium 

(Na)

2.31 

2.18 

2.65 

2.70 

2.74

3.13 

3.09 

2.31 

2.44 

1.78

1.87 

2.70 

1.17 

2.52 

2.57

Potassium 

(K)

0.11 

.13

.13

Bicarbonate 

(HCO^

4.39 

4.46 

4.39 

4.46 

5.36

5.97 

5.97 

4.67 

5.16 

3.61

4.16 

5.56 

2.56 

4.11 

4.13

Carbonate 

(C03)

o.oo

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(SO,)

4.14 

4.37 

5.00 

5.58 

5.48

5.95 

5.89 

4.50 

5.06 

3.16

3 62 

5.43 

1.39 

5.25 

5.58

Chloride

(Cl)

0.07 

07
May 22-31, 1965.

June 27-July 4 . .

Sept. 1-20. .....

Total or 

weighted 

average

24 , 734

21,743

18,296

6,129

7,956

10,909

435,420

~

9.4

9.2_-

5 . 28

1.75 1.15

3.62

5.48

5.68

5.42

1.61 

1.13

.87

.57

1.00

1.96

2.35

2.09

1.87

"

.05

.11_

--

3.33 

2.77

2.56

2.43

2.92

3.69

4.08

3.93

4.05

3.69

.00 

.00

.00

.00

.00 

.00

.00

.00

.00

.00

0.00

3.50 

2.17

1.52

1.04

1.71 

2.54

3.16

3.75

3.08

3.54 '

3.52

~

.04

.08_

--
JAMES RIVER BASIN 

6-4760. JAMES RIVER AT HURON, S

from gaging sta

LOCATION. At Chicago and North Western Railway Co. bridge, 135 feet upsti

300 feet upstream from bridge on U.S. Highway 14. 

DRAINAGE AREA. 16,800 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: April 1950 to September 1951, August 1956 to Septembe

Water temperatures: August 1956 to September 1965.

EXTREMES, 1964-65.--Specific conductance: Maximum daily, 3,170 micromhos Mar. 14: minimum da

Percent sodium: Maximum, 51 Nov. 20, minimum, 35 Apr. 19-20. 

Sodium-adsorption-ratio: Maximum, 4.36 Mar. 21-24; minimum, 1.10 Apr. 9-13.

EXTREMES, 1956-65. Specific conductance: Maximum daily, 3,170 micromhos Mar. 14, 1965: mini

Percent sodium: Maximum, 62 Sept. 22-30, 1959, Oct. 12-20, 22-26, 28-30, 1962: minimum, 24 

Sodium-adsorption-ratio (1961-65): Maximum, 6.28 Oct. 12-20, 22-26, 28-30, 1961: minimum, 

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potas

discharge, and samples during periods of no flow at gage are composited by equal volume. 

office at Lincoln, Nebr. During some periods, all flow is diverted from the channel near 

No flow past gage Oct. 1-2, 6, Oct. 9 to Nov. 13, Nov. 28 to Mar. 20, Aug. 11-16.

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 3, 1964... 

Oct. 4-5, 7-8..

Mar. 21-24, 

1965.........

Apr. 15-16.....

Runoff

(acrefeet)

3 

26 

258 

52 

30

22

103 

12 

87 

12

177 

787 

609 

89 

571

Silica 

(Si02) 

ppm

7.8 

7.2

5.5

~

Equivalents per million

Calcium 

(Ca)

3.29 

7 

2.94 

6 

6

7

7.88 

17 

16 

13

11 

7 

2 

2 

3

Magnesium 

(Mg)

3.37 

46 

3.78 

88 

40

36

9.79 

60 

54 

72

60 

70 

62 

76 

44

Sodium

(Na)

6.09 

6.09 

6.61 

6.70 

6.70

7.22

12.96 

11.22 

10.01 

8.48

7.35 

4.79 

1.26 

1.35 

1.70

Potassium 

(K)

0.49 

.49

.64

:

_

Bicarbonate 

(HC03)

6.42 

6.05 

5.75 

6.42 

6.26

6.85

11.33 

11.26 

10.42 

8.46

7.21 

4.84 

1.61 

1.74 

2.03

Carbonate

(C03)

0.00 

.50 

.60 

.00 

.00

.00

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

4.31 

4.31 

4.87 

4.77 

4.91

5.33

15.51 

14.57 

12.24 

11.62

9.22 

6.23 

2.08 

2.14 

2.83

Chloride

(Cl)

2.45 

2.60

4.43

"
Apr. 17-18,

June 18-30.....

Aug. 17-31..... 

Sept. 1-12..... 

Sept. 13-30....

Total or 

weighted 

average

916

27,866

4,641

1,075

547 

348 

1,617

B96.142

_

9.4

--

4.

4.

4.

5.

3.54

7.

7. 

.7. 

4.09

5

14

2.71

38

90

68

66

3.45

12

80 

70 

3.87

11

2 31

4.35

4.48

3.44

3.44

3.48 

4.57

5.52

6.05 

6.61 

6.35

3.48

.36

_

_

_

.41

_

.46

-

2.51

4.79

3.87

3.84

4.13

3.98

4.51 

5.23

5.67

5.80

5.83 

6.15 

6.38

4.06

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00 

.00 

.00

--

3.33

4.08

4.48

3.48

2.89

2.79

3.04

3.50 

4.14

4.48

4.75

5.21

5.50 

5.77 

5.75

3.48

1.44

_

_

_

2.14

_

2.26

"

A Calculated from determined constituents.

B Mean discharge based on 365 days; mean discharge for 207 days of actual flow, 234 cfs.
PLATTE RIVER BASIN 

6-7660. PLATTE RIVER AT BRADY, 

LOCATION. At gaging station at highway bridges, 0.5 mile and 2.5 miles south of Brady, Lincol

and South Platte Rivers.

DRAINAGE AREA. 56,900 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: November 1950 to September 1965.

Water temperatures: March 1951 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 974 micromhos July 1 (chan. 1), mi

Percent sodium: Maximum, 39 July 26 to Aug. 31: minimum, 22 June 22.

Sodium-adsorption-ratio: Maximum, 1.91 July 26 to Aug. 31: minimum, 1.10 June 22.

EXTREMES, 1951-65.--Specific conductance: Maximum daily, 1,460 micromhos Jan. 22, 1962 (chan. 

Jan. 10, 1957 (chan. 1).

Percent sodium: 46 Aug. 1-2, 1955; minimum, 22 Nov. 26, 1952.

Sodium-adsorption-ratio (1961-65): Maximum, 2.19 July 24 to Aug. 17, 1964: minimum, 1.18 Ma

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potass

major channels composited by discharge. Composite periods normally identical to those of Su

Chemical analyses, water year October 1964 t

Date 

of 

collection

Oct. -31, 1964 .

Jan. -31, 1965.

May 1-4, 6-31...

Runoff 

(acrefeet)

7,686 

7,855 

9,100 

9,408 

9,552

10,883 

742 

3,412 

7,847 

13,031

365 

1,539 

4,760 

11 , 163 

7,379

Silica 

(Si02) 

ppm

39 

39

39

36

28

Equivalents per million

Calcium 

(Ca)

4 

4. 

2.94 

2.99 

4

2.94 

4 

4 

4. 

4.

2.94 

4 

3. 

4 

5.59

Magnesium 

(Mg)

30 

36 

1.40 

1.15 

08

1.07 

04 

00 

30 

26

1.23 

32 

52 

40 

1.56

Sodium 

(Na)

2.39 

2.26 

2.18 

1.91 

1.87

1.70 

1.70 

1.70 

1.78 

2.04

2.00 

2.00 

1.65

 2.00

2.09

Potassium 

(K)

0.26 

.24

.23

.25

.28

Bicarbonate 

(HCOa)

3.74 

3.77 

3.77 

3.61

3.54

3.39 

3.67

3.49

3.20 

3.93 

3.90

Carbonate 

(C03)

0.00 

.00 

.00 

.00

.00

.00 

.00

.00

.00 

.00 

.00

Sulfate 

(SO,)

2.42 

2.21

2.04

I2.46

5.02

Chloride

(CD

0.42 

.37

.31

"

.39

.37

F

r
June 23-27, 1965

June 28-July 4 . .

July 26-Aug. 31.

Sept. 1-30......

Total or

weighted

average

103,339

31,559

57,463

19,101

330,929

_

__

37

6.48

6.66

4.64

3.14| 1.23

5.32

2.52

3.18

2.91

2.22

2.45

_

" 

__

.28

3.28

3.61

3.74

3.67

3.55

0.00

.00

.00

.00

0.00

__

2.62

_~_

.45
PLATTE RIVER BASIN--Continued

6.7680. PLATTE RIVER NEAR OVERTON, 

LOCATION..-At gaging station at highway bridge, 4 miles south of Orerton, Dawson County, and 4 

DRAINAGE AREA..-58,400 square miles, approximately.

RECORDS AVAILABLE...Chemical analyses: December 1951 to September 1952, November 1958 to Sept

Water temperatures: November 1958 to September 1965. 

EXTREMES, 1964.65.-.Specific conductance: Maximum daily, 908 micrombos July 3 (north chan.); 

Percent sodium: Maximum, 41 Oct. 1.31; minimum, 24 June 25.

Sodium-adsorption-ratio: Maximum, 2.10 Oct. 1-31; minimum, 1.19 June 25.

EXTREMES, 1958.65...Specific conductance: Maximum daily, 1,420 micromhos Feb. 8, 1962 (south 

REMARKS.--Values reported for sodium (Na) are determined by analysis and do not include potass

discharge.

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. -31, 1964.

Jan. -31, 1965.

May 1-4, 6-23...

June 29.........

Runoff

(acrefeet)

54,294 

55,160 

61,180 

66,776 

70,865

71 , 264 

60,754 

16,320 

688 

38,099

66 , 073 

19,716 

52,959 

19,815 

15,055

Silica 

(Si02) 

ppm

30 

27

30 

29

21

22 

23

Equivalents per million

Calcium

(Ca)

4 

4 

2.94 

3.24 

4

3.34 

4 

5 

3.19 

3

4 

5.34 

6 

4.64 

4.89

Magnesium 

(Mg)

58 

40 

1.73 

1.40 

80

1.56 

66 

02 

1.56 

76

88 

1.32 

20 

1.48 

1.48

Sodium 

(Na)

3.18 

2.96 

2.91 

2.78 

2.70

2.61 

2.57 

2.78 

2.78 

2.00

2.57 

2.18 

2.44 

2.57 

2.52

Potassium

(K)

0.28

.28

.28 

.31

.36

.31 

.31

Bicarbonate 

(HC0 3)

3.70 

3.74 

3.98 

3.92 

3.88

3.84 

3.67 

3.70 

3.54 

2.93

3.84 

3.62 

3.13 

3.36 

3.46

Carbonate 

(C0 3)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(SOJ

3.39 

3.21 

3.31 

3.19 

3.27

3.21 

3.16 

3.69 

3.54 

2.64

3.25 

5.02 

5.10 

4.81 

4.96

Chloride

(Cl)

0.54

.54

.45 

.59

.42

.62 

.68

F

r

0
June 30-July 7,

Aug. 26-Sept.30.

Total or 

weighted 

average

107,893

899,530

"

5.82

5.20

5.24

5.05

2.87

2.71

"

4 03

3.77

3.72

.00

0.00

4 33

3 79 3*98

4.29

3.68

"
PLATTE RIVER BASIN--Continu

6-7657. SUPPLY CANAL (TRI-COUNTY DIVERSION) 

LOCATION. At gaging station at Parshall Flume in sec. 28, T. 13 N., R. 29 W., near Maxwell, 

RECORDS AVAILABLE.--Chemical analyses: March 1951 to September 1965.

Water temperatures: March 1951 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,200 micromhos Sept. 19, 26, 27, 2

Percent sodium: Maximum, 42 Oct. 1-31; minimum, 21 June 22.

Sodium-adsorption-ratio: Maximum, 2.20 Sept. 1-30; minimum, 1.10 June 22. 

EXTREMES, 1951-65. Specific conductance: Maximum daily, 1,680 micromhos Jan. 23, 1962; mini

Percent sodium: Maximum, 48 Aug. 1 to Sept. 15, 1955, July 24 to Aug. 17, 1964; minimum, 2

Sodium-adsorption-ratio (1961-65): Maximum, 2.57 Aug. 1-17, 1964, minimum; 1.10 June 22, 1

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potas

River at Brady, Nebr. Daily samples for chemical analysis composited by discharge. Recor

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-31, 1964.

Jan. 1-31, 1965 .

May 1-4, 6-31...

Runoff 

(acrefeet)

63,578 

56,707 

67,882 

64,316 

63,035

61,672 

4,046 

10,929 

45,620 

86,162

2,995 

9,029 

10,812 

3-7,599 

2,777

Silica 

(Si02) 

ppm

26 

28

30

27 

25

Equivalents per million

Calcium

(Ca)

4. 

4. 

2.69 

2.94 

4.

3.14 

4 

4 

4 

4

3.14 

4 

3 

4 

6.29

Magnesium 

(Mg)

00 

04 

1.40 

1.32 

44

1.40 

52 

32 

78 

54

1.65 

20 

72 

76 

1.48

Sodium

(Na)

2.87 

2.74 

3.00 

2.91 

2.87

2.87 

2.52 

2.18 

3.00 

3.13

3.18 

2.70 

2.09 

3.7O 

2.18

Potassium 

(K)

0.26 

.26

.25 

.28

.36

Bicarbonate 

(HCOJ

3.52 

3.72 

3.57 

3.56

3.51 

3.38 

3.33 

3.39 

3.49

3.47 

3.47 

3.13

4.44

Carbonate 

(C03)

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00

.00

Sulfate 

(S04 )

3.04 

3.23

3.50 

4.06

5.31

Chloride

(Cl)

0.54 

.51

.54 

.62

.39

F

r
June 23-24, 1965

June 25-27.......

June 28-July 4 . .

July 5-25.......

July 26-Aug. 31.

Sept. 1-30......

Total or

weighted

average

5,871

10,056

26,811

75,433

145,970

103,894

955,194

6.4

6 .90

6.62 

7 .38

5 * 90 

5.84

4.34[ 1.97

4.71

2.31

2.74

3.61

3.44

3.61

3.92

3.16

_

___

__

.28

--

3.28

3.21

3.62

3.64

3.54

3.90

3.59

.00

.00

.00

.00

.00

.00

0.00

___

5.41

__

.76
PLATTE RIVER BASIN Continue

6-7640. SOUTH PLATTE RIVER AT JULESBU

LOCATION. At gaging station at bridge on U.S. Highway 385, 0.9 mile southeast of Julesburg, Sedg

and 8 miles downstream from Lodgepole Creek. 

DRAINAGE AREA. 23,138 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1945 to September 1965.

Water temperatures: October 1945 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 2,540 micromhos Apr. 3; minimum daily, 

Percent sodium: Maximum, 37 on many days during February, April, June, and July; minimum, 25 J

Sodium-adsorption-ratio: Maximum, 3.26 Feb. 1-28; minimum, 1.21 June 19-23. 

EXTREMES, 1945-65. Specific conductance: Maximum daily, 3,000 micromhos Dec. 28, 30, 1962; minim

Percent sodium: Maximum, 82 Mar. 1-2, 1947; minimum, 25 June 19-23, 1964.

Sodium-adsorption-ratio: Maximum, 3.32 Jan. 15-31, 1963; minimum, 1.21 June 19-23, 1965. 

REMARKS. Values reported for dissolved solids less than 1,000 ppm are residues at 180°C, and val

constituents unless otherwise noted. Values reported for sodium (Na) are determined by analys

chemical analysis composited by equal volume.

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. -31, 1964.

Jan. -31, 1965.

Runoff 

(acrefeet)

1,482 

2,928 

4,642 

5,528 

8,719

7,194 

2,710 

788 

2,822 

2,063

635 

944 

809 

7,436 

4,046

Silica 

(Si02) 

ppm

33 

31

23

21 

20

Equivalents per million

Calcium

(Ca)

15. 

15. 

11.58 

11.28 

16

10.58 

15. 

14. 

14. 

14.

11 

14 

7.58 

5. 

5.99

Magnesium 

(Mg)

44 

42 

4.44 

4.52 

00

4.94 

12 

72 

18 

18

36 

18 

3.37 

22 

2.06

Sodium

(Na)

8.00 

8.05 

8.40 

8.70 

9.22

8.00 

8.70 

8.35 

8.13 

8.18

6.44 

8.27 

5.96 

2.31 

3.57

Potassium 

(K)

0.54 

.43

.38

.28

.33

Bicarbonate

(Hccg

]? Jjjr

5.70 

5.34

4.88 

4.33

3.72 

4.57 

4.25

3.80

Carbonate 

(CO,)

.00 

.00

.00 

.00

.00

.00

.00

.00

Sulfate 

(S04 )

16.20 

16.45

16.66 

18.43

11.14

7.02

Chloride

(CD

2.14 

2.12

2.00

1.33

.82

F

r

0
June 19-23, 1965

Juno 30.........

Total or 

weighted 

average

170,579

6,744

5,752

4,681

23,921

435,425

21

"

6.70

7 44

7.88] 3.78

8 48

5.591 1.97

8.53 | 4.52

9.36

2.22

3 57

4.83

7.53

4.48

.28

.31

3.43

4.49

3.82

4.75

3.85

.00

.00

.00

0.00

13.78

-

1.41

.87

1.72

A Residue at 180°C.
PART 7. LOWER MISSISSIPPI RIVER BAS

ARKANSAS RIVER BASIN 

7-1305. ARKANSAS RIVER BELOW JOHN MARTIN RESER

LOCATION. At gaging station, 1.1 miles upstream from Caddoa Creek, 1.7 miles downstream from 

DRAINAGE AREA. 18,917 square miles, of which 785 square miles is probably noncontributing.

RECORDS AVAILABLE. Chemical analyses: August 1942 to August 1943, October 1945 to July 1949

Water temperatures: January 1951 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 4,620 micromhos Dec. 18, Feb. 1; mi

Percent sodium: Maximum, 41 Oct. 1-12, Dec. 16 to Feb. 3; minimum, 11 June 18.

Sodium-adsorption-ratio: Maximum, 6.08 Jan. 1 to Feb. 3; minimum, 0.38 June 18. 

EXTREMES, 1951-65. Specific conductance: Maximum daily, 5,180 micromhos Apr. 21, 1955: mi

Percent sodium: Maximum, 44 Feb. 23-28, Mar. 1-31, 1962; minimum, 4 May 27, 1964.

Sodium-adsorption-ratio: Maximum, 6.28 Nor. 3-13, 1961; minimum, 0.17 May 27, 1964.

REMARKS. Where no potassium (K) is reported, sodium (Na) and potassium (K) are calculated an

more comprehensive definition of water quality at this station.

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-12, 1964.

Dec. 11-15......

Jan. 1-31, 1965.

Apr. 30.........

Runoff 

(acrefeet)

781 

1,180 

1,607 

315 

222

236 

92 

105 

14 

774

959 

4,165 

1,708 

1,455 

222

Silica 

(Si02 ) 

ppra

Equivalents per million

Calcium

(Ca)

32 

25 

28 

29 

33

30 

36 

37 

38 

31

28 

27 

20 

?8 

22

Magnesium

(Mg)

40 

40 

20 

60 

80

60 

80 

60 

00 

20

80 

60 

20 

04 

20

Sodium

(Na)

22.32 

17.10 

17.49 

18.79 

22.97

19.58 

25.67 

26.36 

26.49 

19.79

18.31 

18.23 

10.27 

18. 37 

12.88

Potassium 

(K)

Bicarbonate 

(HCOJ

3.57 

4.06 

4.75 

4.92 

4.59

4.16 

4.95 

4.75 

4.72 

4.85

4.77 

3.84 

4.20 

4.3fi 

4.13

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00

,00 

.00 

.00 

.00 

.00

.00 

.00 

.00

.00

.00

Sulfate 

(S04 )

48.09 

34.35 

37.68 

40.18 

48.09

42.47 

53.09 

54.34 

54.96 

42.47

38.93 

38.73 

24.36 

20.75 

28.52

Chloride

(Cl)

3.05 

4.06 

3.27 

3.27 

4.06

3.55 

4.51 

4.85 

4.80 

3.67

3.39 

3.33 

1.92 

3.39 

2.43

F

r
May 1-2, 1965...

Sept. 21-30.....

Total or 

weighted 

average

252 

446

649

401

2,666

1,226

2,257

2,993

2,285

5,855

1,412

3,610

2,122

280,086

21.00 

26.00

11.48

17.10

20.20

17.00

27.20

12.48

24.40

10.80

8.68

11.48

9.24

7.88

4.48

28.40

26.80

9.16

6.28

12.46

6.52

12.00

6.48

6.64

13.72

6.80

7.56

9.90

8.54

11.61 

15.40

4.05

7.70

9.57

7.92

14.88

6.18

8.22

3.39

2.61

4.44

3.48

2.65

.57

16.97

18.10

2.87

2.44

7.48

2.48

6.74

2.48

2.78

7.87

2.91

5.18

3.92

4.10 

4.43

3.29

3.57

4.25

3.65

4.98

3.98

4.95

3.79

3.10

2.98

2.92

3.15

3.02

5.00

3.03

7.46

2.26

2.92

2.02

2.74

2.00

2.02

3.13

2.10

2.18

2.51

2.39

.00 

.00

.13

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

_.10j

--

26.44 

34.14

11.16

19.53

23.53

19.61

34.35

13.64

26.65

9.76

7.56

11.91

9.06

6.87

1.89

36.85

38.10

3.83

6.10

15.68

6.56

14.80

6.54

6.97

17.01

7.16

8.18

11.66

9.39

2.09 

2.82

.96

1.69

1.97

1.66

2.85

1.02

.90

.65

.62

1.02

.73

.51

.14

3.50

3.67

.71

.37

1.35

.42

1.21

.42

.42

1.44

.45

.51

.79

0.65
ARKANSAS RIVER BASIN--Continued 

7-1465. ARKANSAS RIVER AT ARKANSAS CIT

LOCATION. At gaging station at bridge on U.S. Highway 166, 0.1 mile downstream from St. Lou

City, Cowley County, 5.4 miles upstream from Walnut River, and at mile 701.4.

DRAINAGE AREA. 43,713 square miles, of which 7,607 square miles is probably noncontributing. 

RECORDS AVAILABLE. Chemical analyses: October 1951 to September 1965.

Water temperatures: October 1951 to September 1965.

Sediment records: September 1961 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 2,470 micromhos Mar. 27; minimum da

Percent sodium: Maximum, 78 Jan. 1-14, Feb. 27-28; minimum, 36 Apr. 4.

Sodium-adsorption-ratio: Maximum, 10.12 Mar. 5-17; minimum, 0.95 Nov. 16-18. 

EXTREMES, 1951-65. Specific conductance: Maximum daily, 5,770 micromhos Jan. 16, 1957; mini

Percent sodium: Maximum, 79 Apr. 28, 1955; minimum 27 Aug. 15, 1960.

Sodium-adsorption-ratio: Maximum, 16 Oct. 5, 1953, Aug. 7, 1955; minimum, 0.9 May 31, 1962

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potas

are calculated and reported as sodium (Na), Feb. 1 to Sept. 30. Flow affected by ice Dec. 

Chemical analyses, water year October 1964 t

Date 

of 

collection

Oct. 1-10, 1964. 

Oct. 11-24. .....

Oct. 25. ........

Oct. 26-28. ..... 

Oct . 29-31 ......

Nov. 4-7. .......

Nov. 25-30. .....

Dec. 14-16.

Runoff 

(acrefeet)

6,367 

7,470 

1,071 

16,584 

3,832

2,969 

41,851 

14,122 

213,203 

42,944

13,228 

15,376 

16,939 

21,261 

8,586

Silica 

(Si02 ) 

ppm

Equivalents per million

Calcium 

(Ca)

7 

7 

7 

3 

5

6 

2 

7 

1 

2

5 

8 

5 

3 

3

Magnesium

(Mg)

.50 

10 

.00 

36 

.50

90 

72 

00 

.36 

80

.44 

20 

96 

52 

84

Sodium

(Na)

13.05 

14.79 

9.31 

3.35 

9.09

12.53 

2.09 

9.66 

.78 

2.39

7.48 

10.27 

12.2" 

3.57 

7.22

Potassium 

(K)

Bicarbonate 

(HCOJ

"

Carbonate 

(CO,)

"

Sulfate 

(S04 )

2.87 

3.02 

2.50 

1.48 

2.39

2.81 

.96 

2.60 

.67 

1.02

1.98 

2.81 

3.16 

1 48 

2.06

Chloride

(ci)

13.26 

14.67 

9.73 

3.53 

8 97

12.69 

2.03 

10.16 

.71 

2.65

7 62 

11.71 

13 6<* 

3.67 

7.56

F
Dec. 17, 1964. . . 

Dec. 18-31. .....

Jan, 1-14, 1965.

Feb. 18-26. .....

Mar. 1-4. .......

Mar. 18.........

Mar. 19-31. .....

Apr. 4. .

Apr. 6. .........

Apr 7-8

Apr. 9-14. ......

Apr. 15-17. .....

Apr. 26-27. .....

May 1-13. ......

May 14. .........

May 15-16. ......

May 17-26. ......

May 27-28. ......

June 1-3. . . .

June 4-5. .......

1,587

21,021

11,472

17,431

14,245

8,747

4,721

20,602

9,977

38.241

4.20

3.80

2 84

4 32

4 24

7 52

4 24

2.64

9.96

13.09

15.75

3.57

--

85

3 47

1 34

2 33

39

1.31

--

13

53

60

2.46

3.33 

3 37

3 37

3 23

3 02

2 33

3 44

2 14

73

3 71

3 23

1 02

10.10

14.11

9 37

9 37

14 67

1 35

4 51

1 33

9 31

3 24
ARKANSAS RIVER BASIN--Continue

7-1465. ARKANSAS RIVER AT ARKANSAS CITY, KA

Chemical analyses, water year October 1964 to Sept

Date 

collection

June 6-7, 1965. . 

June 8-15. ......

June 21-25. .

June 26

July 1-12. ......

July 13-14. .....

July 15-24. ..... 

July 25-31. .....

Aug. 18-23. .....

Sept . 9-18. ..... 

Sept. 19. .......

Sept. 27-30. ....

Total or 

weighted 

average

Runoff

(acrefeet)

106,512 

248,648 

84,337 

32,886 

17,375

166,612 

232,328 

14,539 

45,858 

22,048

37,057 

14,400 

2,717 

14,037 

45,556

38,797 

58,374 

15,015 

185,772 

33,243

2,290,515

Silica 

(Si02) 

ppm

Equivalents per million

Cal- Magnecium slum 

(Ca) (Mg)

1.28 

1.76 

1.76 

3.92 

3.20

2.72 

5.24 

6.80 

8.56 

9.00

8. 20 

7.48 

4.80 

7.44 

4.00

2.68 

5.48 

3.20 

2.16

4.64

3 53

Sodium

(Na)

1.26 

1.87 

3.48 

6.74 

2.83

1.91 

4.26 

6.70 

8.61 

10.53

10.70 

8.44 

6.18 

9.14 

3.70

2.04 

5.83 

3.31 

1.78 

5.39

4.61

Potassium 

(K)

Bicarbonate 

(HCO3)

0.79 

1.11 

.79 

2.23 

1.51

1 .11 

2.13 

2.85 

3.18 

3.44

3 51 

3.02 

2.10 

3.02 

1.38

1.18 

1.70 

1 25 

1.05 

1.44

"

Carbonate 

(C03)

0 47 

40 

80 

.47 

.00

.20 

.27 

.27 

53 

.60

.27 

. 27 

.27 

.27 

.40

.93 

00 

.00 

. 27 

.27

"

Sulfate

(S04 )

0.35 

48 

73 

1.81 

2.54

2.31 

4.52 

5.85 

6 87 

7.08

6.45 

6.04 

3.71 

6 00 

3.54

2.25 

6 50 

3 19 

1 52 

4 79

2.39

Chloride

(Cl)

0.93 

1 64 

2 91 

6.15 

1.95

1.02 

2 54 

4.46 

6 49 

8 32

8 52 

6 49 

4 80 

7.19 

2.37

1.18 

3 10 

2 09 

1.10 

3 53

3.95
ARKANSAS RIVER BASIN Continued 

7-2505. ARKANSAS RIVER AT VAN BUREN, 

LOCATION. At gaging station near right bank on downstream side of pier of bridge on U.S. High

downstream from Lee Creek, 8.6 miles downstream from Poteau River, and at mile 353.4. 

DRAINAGE AREA . 150,483 square miles, of which 22,241 square miles is probably noncontributing

RECORDS AVAILABLE.--Chemical analyses: October 1945 to September 1965.

Water temperatures: October 1945 to September 1965. 

EXTREMES, 1964-65.--Specific conductance: Maximum daily, 3,210 micromhos Dec. 29; minimum dai

Percent sodium: Maximum, 79 Dec. 29-30; minimum, 43 July 16-31.

Sodium-adsorption-ratio: Maximum, 12.90 Dec. 29-30; minimum, 1.97 July 16-31. 

EXTREMES, 1945-65. Specific conductance: Maximum daily, 8,980 micromhos Apr. 1, 1954; minimu

Percent sodium: Maximum, 96 Apr. 21-24, 1964; minimum, 18 July 22, 1959.

Sodium-adsorption-ratio (1961-65): Maximum, 15.87 Feb. 25 to Mar. 1, 1964; minimum, 1.11 Ma

Chemical analyses, water year October 1964 t

Date 

of 

collection

Oct. 1-7, 1964.. 

Oct. 8-Nov. 3...

Nov. 9-Dec. 3...

Dec. 16-27......

Dec. 31-Jan. 9,

Feb. 28-Mar. 22.

Runoff 

(acrefeet)

113,449 

118,032 

20,688 

1,868,430 

389,871

369,402 

17,455 

39,273

296,727 

413,732

101,913 

348,774 

83 , 306 

670,155 

223,736

Silica

(sicg

ppm

9.8 

6.7 

5.8 

8.5 

7.6

9.9

12

12 

11

10 

9.3 

10 

7.1 

7.8

Equivalents per million

Calcium 

(Ca)

1.90 

3.19 

3.49 

1.85 

2.00

2.89 

3.89 

4.29

3.19 

2.74

2.59 

1.70 

2.00 

2.10 

2.64

Magnesium 

(Mg)

0.64 

.99 

1.07 

.61 

.58

.99 

1.32 

1.65

1.07 

.90

.90 

.51 

.82 

.80 

1.15

Sodium 

(Na)

2.91 

4.31 

6.00 

2.39 

4.57

8.96

22.23

11.05 

7.22

4.00 

2.61 

6.18 

3.39 

6.53

Potassium 

(K)

0.10 

.10 

.12 

.10 

.09

.09

.10

.10 

.08

.10 

.07 

.07 

.08 

.08

Bicarbonate

(Hccg

1.62 

2.57 

2.79 

1.69 

1.74

2.29 

2.64 

2.62

2.34 

2.23

2.10 

1.48 

1.64 

1.84 

2.07

Car30 nate

(ccg

0.03 

.13 

.10 

.00 

.00

.00 

.20 

.27

.10 

.00

.13 

.07 

.07 

.07 

.13

Sulfate 

(SO,)

0.98 

1.39 

1.67 

.75 

.83

1.42

2.62

1.64 

1.39

1.00 

.73 

1.02 

.96 

1.31

Chloride

(ci)

2.82 

4.40 

6.15 

2.43 

4.65

9.25

22.48

11.28 

7.42

4.18 

2.68 

6.26 

3.39 

6.83

F

r

(

0
ARKANSAS RIVER BASIN Contin

7-2505. ARKANSAS RIVER AT VAN BUREN, A

Chemical analyses, water year October 1964 to S

Date 

of 

collection

Mar. 31-Apr. 25,

Apr. 26-May 8...

Sept. 29-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

3,338,658 

397,607 

342,149 

481,269 

253,488

1,790,281 

1,111,140 

1,109,455 

583,299 

633,937

149,157 

72 , 000 

74,182 

210,645 

266,023

833,455 

305,653

17,027,341

Silica 

(SiO,) 

ppm

12 

10 

12 

11 

8.4

8.4 

9.8 

9.6 

7.3 

9.1

8.8 

9.4 

10 

11 

12

12 

11

9.9

Equivalents per million

Calcium 

(Ca)

2.05 

2.59 

1.85 

2.64 

1.60

2.35 

1.85 

2.35 

2.25 

2.50

2.30 

3.54 

2.89 

3.44 

2.69

2.99 

2.20

2.25

Magnesium 

(Mg)

0.73 

.99 

.63 

1.07 

.76

.90 

.77 

.90 

.80 

.80

.82 

1.07 

.99 

1.32 

.99

.99 

.63

0.81

Sodium

(Na)

2.65 

4.13 

2.61 

6.53 

2.61

3.96 

2.39 

3.92 

2.44 

3.09

3.78 

8.66 

5.18 

8.40 

4.35

8.66 

2.74

4.05

Potassium 

(K)

0.09 

.10 

.08 

.10 

.08

.10 

.09 

.14 

.14 

.12

.12 

.15 

.09 

.16 

.12

.15 

.06

0.10

Bicarbonate 

(HCcg

1.84 

2.16 

1.61 

2.07 

1.54

2.07 

1.77 

1.93 

2.00 

2.20

2.07 

2.59 

2.29 

2.59 

2.43

2.16 

1.90

1.95

Carbonate 

(C03)

0.07 

.13 

.00 

.13 

.00

.07 

.00 

.07 

.07 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00

"

Sulfate 

(SOJ

0.90 

1.12 

.79 

1.29 

.77

1.08 

.71 

1.15 

1.15 

1.23

1.10 

2.44 

1.87 

2.56 

1.48

2.12 

1.54

1.10

Chloride 

(Cl)

2.54 

4.23 

2.68 

6.63 

2.60

4.09 

2.40 

4.01 

2.40 

3.10

3.67 

8.12 

5.02 

7.90 

4.23

8.24 

3.39

4.03
ARKANSAS RIVER BASIN Continue

7-1610. CIMARRON RIVER AT PERKINS, 

LOCATION. At gaging station at bridge on State Highway 40, 1 mile south of Perkins, Payne Co

from Wildhorse Creek, and at mile 87.3.

DRAINAGE AREA. 17,852 square miles, of which 4,926 square miles is probably noncontributing. 

RECORDS AVAILABLE. Chemical analyses: October 1952 to September 1963, June to September 196

Water temperatures: October 1952 to September 1963, June to September 1965. 

REMARKS. Sodium (Na) and potassium (K) are calculated and reported as sodium (Na).

Chemical analyses, June to Septembe

Date 

of 

collection

June 16-19, 1965 

June 20-21 ......

June 24-. ........

July 1. .........

July 4-9. ....... 

July 10-18. ..... 

July 19-28. .....

Au«c . 1 ..........

Runoff 

(acrefeet)

12,361 

2,642 

3,253 

2,281 

4,403

8,251 

12,555 

4,602 

3,293 

5,217

9,164 

9,086 

3,074 

4,058 

659

Silica 

(Si02 ) 

ppm

Equivalents per million

Calcium 

(Ca)

5 

7 

3 

2 

7

10 

8 

6 

6 

8

6 

3 

11 

4 

4

Magnesium 

(Mg)

04 

64 

80 

72 

80

00 

00 

32 

00 

40

88 

00 

60 

64 

64

Sodium

(Na)

50.90 

75.69 

30.71 

15.57 

60.47

87.87 

69.17 

46.11 

40.85 

73.95

46.98 

57.43 

92.66 

27.54 

26.10

Potassium 

(K)

Bicarbonate 

(HCOJ

2.36 

2.56 

1.67 

1.64 

2.36

2.95 

3.08 

2.23 

2.07 

2.39

2.69 

2. 32 

2.82 

2.03 

2.75

Carbonate 

(C03)

0.00 

.00 

.40 

.00 

.67

.13 

.00 

.40 

.20 

.20

.27

.20 

.07 

.13

Sulfate

(S04 )

2.60 

4.37 

1.83 

1.35 

4.37

4.68 

4.68 

4.37 

2.12 

4.58

4.16 

4. IS 

6.56 

2.33 

2.39

Chloride 

(Cl)

50.78 

76.17 

30.47 

15 23 

60.65

89.71 

69.11 

45.14 

42.32 

74.76

46.55 

S9.ll 

94.50 

27.65 

25.39

F

r

0
ARKANSAS RIVER BASIN Continue

7-1610. CIMARRON RIVER AT PERKINS, OKL

Chemical analyses, June to September 196

Date 

of 

collection

Aug. 2, 1965....

Sept. 6-7, 1965.

Sept. 25-26.....

Total or 

weighted 

average

Runoff 

(acrefeet)

440 

750 

1,365 

2,471 

3,346

11,742 

9,449 

4,423 

4,324 

2,499

4,007 

1,230 

952 

2,071 

496

2,011 

885 

198,565 

11,107 

9,878

2,678 

3,094 

4,324

367,006

Silica 

(Si02 ) 

Ppm

Equivalents per million

Calcium

(Ca)

7 

9 

13 

7

8 

10 

7 

6. 

4.

5 

10 

14 

12 

16

16. 

6. 

2. 

3. 

4.

5 

7 

9

4

Magnesium

(Mg)

16 

60 

34 

72

20 

60 

28 

04 

00

84 

40 

20 

30 

76

00 

00 

92 

44 

88

88 

76 

40

89

Sodium 

(Na)

41.89 

60.03 

107.01 

51.33 

88.31

40.41 

61.77 

49.59 

33.23 

18.49

29.49 

53.07 

99.62 

68.30 

108.32

83.96 

38.02 

5.35 

7.74 

12.05

19.49 

36.28 

60.90

2.58

Potassium 

(K)

Bicarbonate 

(HC03)

2.62 

3.11 

3.20 

2.75 

2.82

1.84 

1.77 

2.82 

2.49 

2.23

2.16 

2.33 

2.69 

2.29 

2.85

3.15 

1.77 

1.70 

1.67 

1.64

1.97 

2.03 

2.49

2.15

Carbonate 

(C03)

0.13 

.07 

.27 

.20 

.13

.00 

.00 

.07 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00

-

Sulfate 

(S0 4 )

3.91 

5.00 

7.16 

3.85 

6.87

5.73 

7.29 

4.58 

4.12 

1.98

3.08 

5.83 

6.56 

9.06 

9.56

9.37 

3.23 

1.35 

2.10 

3.37

3.58 

3.85 

5.62

2.71

Chloride

(Cl)

42.32 

61.50 

109.45 

52.19 

90.27

40.90 

63.47 

49.37 

32.44 

18.05

29.90 

55.01 

104.38 

69.11 

112.56

87.45 

38.93 

5.13 

7.33 

11.85

19.75 

38.08 

62.06

25.97
ARKANSAS RIVER BASIN

7-2450. CANADIAN RIVER NEAR WHITEFIEL

LOCATION. At gaging station near right bank on downstream side of pier of bridge on State Hi

5.5 miles upstream from Kings Creek (corrected), 8.2 miles downstream from Eufaula Dam, and 

DRAINAGE AREA. 47,576 square miles, of which 9,700 square miles Is probably noncontributing. 

RECORDS AVAILABLE. Chemical analyses: September 1944 to February 1945, September 1946 to Sep

Water temperatures: September 1944 to February 1945, September 1946 to September 1964. 

EXTREMES, 1963-64.--Specific conductance: Maximum daily, 2,150 micromhos Dec. 5; minimum dail

Percent sodium: Maximum, 64 Nov. 25-30; minimum, 8 May 12.

Sodium-adsorption-ratio: Maximum, 6.50 Nov. 25-30, minimum, 0.11 May 12. 

EXTREMES, 1944-45, 1946-64. Specific conductance: Maximum daily, 22,900 micromhos Nov. 11, 1

Percent sodium: Maximum, 80 Nov. 6-14, Dec. 21-23, 1947; minimum, 8 May 12, 1964.

Sodium-adsorption-ratio (1951-64): Maximum, 33 Nov. 11, 1956; minimum, 0.4 Mar. 5, 1959. 

REMARKS. Where no potassium (K) is reported, sodium (Na) and potassium (K) are calculated and 

Chemical analyses, water year October 1963 

Date

of 

collection

Oct. 1-15, 1963.

Nov. 1-24.......

Jan. 1-13, 1964.

Mar. 16-19......

Runoff 

(acrefeet)

1,270 

778 

1,571 

1,583 

1,868

4,616 

3,689 

3,816 

4, >534 

2,380

6,206 

228 

348 

378 

135

Silica

(Si02 ) 

ppm

13

10

9.4 

9.0

16

_

Equivalents per million

Cal- Magnecium slum 

(Ca) (Mg)

.64 

.84 

.48 

.92 

.28

.84 

.68 

.08 

.28 

.76

.72 

.04 

.76 

.40 

.32

Sodium

(Na)

7.87 

8.83 

8.87 

12.09 

11.88

8.00 

11.53 

11.40 

10. 57 

11.53

9.48 

7.26 

7.26 

3.35 

4.96

Potassium 

(K)

Bicarbonate 

(HC0 3)

3.08 

2.95 

2.59 

3.21 

3.18

3.15 

3.74 

3.08 

3.47 

3.25

3.57 

2.23 

2.07 

2.00 

2.29

Carbonate 

(CO,)

0.13 

.00 

.00 

.07 

.20

.00 

.00 

.00 

.27 

.47

.33 

.00 

.13 

.20 

.13

Sulfate 

(S0 4 )

0.96 

1.00 

.83 

1.85 

1.96

1.52 

1.85 

2.08 

2.12 

2.04

2.00 

.90 

.92 

.60 

.67

Chloride

(Cl)

9.31 

10.72 

10.95 

13.82 

13.82

9.17 

13.26 

12.98 

11.99 

13.40

10.58 

9.17 

.10 

3.95 

6.21

F

r

0
ARKANSAS RIVER BASIN Continued

7-2450. CANADIAN RIVER NEAR WHITEFIELD, OKL

Chemical analyses, water year October 1963 to Septe

Date 

of 

collection

Mar. 20-22, 1964

Aug. 1-14.......

Sept. 24-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

206 

187 

327 

323 

532

179 

398 

83 

127 

42

4,082 

210 

180 

111 

144

192 

131 

98 

10 

20 

12

514 

8,628 

2,999 

305 

2,404 

8,815

1,19R 

4,984

70,841

(Si02) 

ppra

14 

16

18 

14

4.3 

5.8

"

Equivalents per million

Cal- Magnecium slum 

(Ca) (Mg)

3.52 

5.00 

4.16 

1.28 

1.36

2.08 

3.00 

2.40 

4.24 

2.92

1.52 

.80 

1.60 

2.08 

3,64

4.40 

3.72 

4.00 

4.24 

1.84 

2.88

4.60 

2.76 

2.64 

2.08 

2.80 

3.00

1.16 

2.44

4.55

Sodium

(Na)

3.00 

4.87 

6.18 

.31 

1.26

1.78 

3.87 

3.18 

4.18 

2.26

.32 

.07 

.48 

1.52 

2.44

5.13 

6.09 

6.92 

7.00 

1.31 

2.87

5.83 

2.91 

2.74 

1.74 

2.61 

3.00

.44 

2.35

5.79

Potassium 

(K)

Bicarbonate 

(HCOa)

2.10 

2.92 

1.87 

.85 

1.02

1.25 

1.57 

1.34 

2.59 

2.00

1.25 

.39 

.95 

1.51 

2.49

2.69 

1.67 

1.51 

1.67 

1.41 

1.87

2.36 

1.90 

1.93 

1.64 

1.80 

2.43

.66 

1.97

2.54

Car30 nate 

(CO,,)

0.00 

.13 

.07 

.00 

.00

.07 

.07 

.07 

.20 

.13

.00 

.00 

.00 

.07 

.13

.13 

.00 

.00 

.13 

.00 

.13

.27 

.07 

.00 

.00 

.00 

.00

.00 

.00

"

Sulfate

(SO,)

0.67 

.77 

.77 

.44 

.44

.40 

.48 

.48 

.52 

.50

.23 

.31 

.42 

.42 

.42

.48 

.56 

.52 

.35 

.31 

.23

.15 

.56 

.48 

.35 

.37 

.35

.27 

.35

1.06

Chloride

(Cl)

3.72 

6.07 

7.62 

.28 

1.18

2.17 

4.74 

3.67 

5.08 

2.54

.37 

.17 

.68 

1.61 

3.05

6.21 

7.56 

8.89 

9.08 

1.44 

3.50

7.62 

3.16 

2.99 

1.83 

3.22 

3.24

.69 

2.43

6.86

F

r

0
RED RIVER BASIN

7-3316. RED RIVER AT DENISON DAM, NEA

werho 

LOCATION (revised). At gaging station,1,800 feet downstream from Denison Da

Denison, Grayson County.

DRAINAGE AREA. 39,720 square miles, of which 5,936 square miles is probably noncontributing

RECORDS AVAILABLE.--Chemical analyses: May 1944 to September 1965.

Water temperatures: October 1945 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 2,390 micromhos Aug. 3; minimum da

Percent sodium: Maximum, 60 Nov. 1-30; minimum, 56 Apr. 1-30, May 1-31.

Sodium-adsorption-ratio: Maximum, 6.05 Nov. 1-30: minimum, 4.90 Apr. 1-30. 

EXTREMES, 1944-65. Specific conductance: Maximum daily, 3,520 micromhos Aug

Percent sodium: Maximum, 66 Dec. 1-31, 1958; minimum, 31 Nov. 1-10, 1945.

Sodium-adsorption-ratio (1961-65): Maximum, 6.32 Nov. 1-30, 1962; minimum, 4.48 July 1-31

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium 

determined constituents. Records of specific conductance of daily samples available in d

1944; min

Chemical analyses, water year October 1964 t

Date 

of 

collection

Oct. -31, 1964

Jan. -31, 1965

Sept. 1-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

59,643 

48,496 

55,892 

112,830 

113,018 

100,102

110,083 

119,224 

165,302 

193,932 

166,385 

161,494

1,406,401

Silica 

(Si02) 

ppm

8.5 

6.2 

3.4 

3.0 

3.1 

3.4

3.9 

4.4 

6.0 

6.6 

9.5 

6.7

5.6

Equivalents per million

Calcium

(Ca)

5.44 

5.39 

5.19 

5.04 

4.89 

4.79

4.74 

4.79 

4.79 

4.94 

5.59 

5.39

5.10

Magnesium 

(Mg)

2.88 

2.88 

2.88 

2.63 

2.55 

2.39

2.55 

2.47 

2.22 

2.30 

2.39 

2.39

2.47

Sodium

(Na)

11.74 

12.31 

11.44 

10.35 

9.92 

10.27

9.35 

9.09 

9.70 

9.70 

11.44 

11.22

10.36

Potassium

(K)

0.13 

.13

.12

.12 

.13

--

Bicarbonate

(Hccg

2.00 

1.97 

1.98 

2.03 

2.03 

2.07

2.10 

2.21 

2.43 

2.33 

2.39 

2.29

2.21

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate

(S04 )

5.83 

6.16 

5.66 

5.41 

4.91 

5.33

5.16 

4.91 

5.00 

4.66 

5.66 

5.33

5.22

Chloride 

(Cl)

12.47 

12.41 

11.85 

11.06 

10.38 

10.01

9.65 

9.17 

9.25 

9.76 

11.85 

11.34

10.52
RED RIVER BASIN Continued 

7-3310. WASHITA RIVER NEAR DURWOOD

Highway 18, 1.3 miles downstream from Caddo 

ptember 1965.

24; minimum d

LOCATION. At gaging station at bridge on State

DRAINAGE AREA. 7,202 square miles.

RECORDS AVAILABLE. Chemical analyses: May 1944 to

Water temperatures: April 1947 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,660 micromhos Mar

Percent sodium: Maximum, 35 Dec. 1-2; minimum, 9 Sept. 25.

Sodium-adsorption-ratio: Maximum, 2.12 July 30-31; minimum, 0.25 Sept. 25. 

EXTREMES, 1944-65 . Specif ic conductance: Maximum daily, 2,120 micromhos Nov

Percent sodium: Maximum, 42 Aug. 1-14, 1964; minimum, 9 Sept. 25, 1965.

Sodium-adsorption-ratio (1962-65): Maximum, 2.82 Sept. 12, 1963; minimum, 0.25 Sept. 25 

REMARKS. Sodium (Na) and potassium (K) values are calculated and reported as sodium (Na).

15, 1963; min

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-12, 1964. 

Oct. 13-23......

Nov. 1-4........

Jan. 1-14, 1965.

Feb. 1-8........

Feb. 11-15......

Runoff

(acrefeet)

6,403 

2,575 

1,184 

3,769 

24,301

116,628 

57,144 

2,452 

12,781 

13,083

9,691 

22,457 

4,713 

6,069 

7.547

Silica 

(Si02 ) 

ppm

Calcium

(Ca)

6. 

6. 

9. 

7. 

5.

3. 

4. 

4. 

7. 

10.

11. 

9. 

9. 

6.

7.

Equivalents per million

Magnesium 

(Mg)

20 

32 

00 

90 

36

68 

96 

04 

20 

20

60 

00 

00 

80 

70

Sodium

(Na)

1.13 

2.04 

2.48 

3.96 

.57

.70 

1.48 

2.22 

2.61 

3.48

3.57 

3.18 

3.39 

2.13 

2.35

Potassium 

(K)

Bicarbonate

(Hccg

2.62 

2.95 

2.36 

2.39 

2.29

2.16 

2.79 

.66 

1.51 

2.16

2.95 

3.34 

1.84 

3.28 

2.79

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.13 

.00

Sulfate 

(S04 )

3.16 

3.23 

5.73 

5.83 

2.71

1.64 

2.31 

3.77 

5.83 

8.43

8.85 

6.25 

7.60 

3.54 

5.04

Chloride

(Cl)

1.47 

2.20 

3.41 

3.58 

.93

.59 

1.35 

1.69 

2.48 

3.07

3.27 

2.60 

2.93 

1.95 

2. 2O
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RED RIVER BASIN Continued

7-3310. WASHITA RIVER NEAR DURWOOD, OKLA

Chemical analyses, water year October 1964 to Sept

Date 

of 

collection

Aug. 18-20, 1965

Sept. 12-20..... 

Sept. 21-23..... 

Sept. 24........

Total or 

weighted 

average

Runoff 

(acrefeet)

1,541 

1,333 

262 

4,096 

5,280

1,537 

7,462 

5,633 

8,430 

43,498

590,496

Silica 

(Si02) 

ppm

Calcium 

(Ca)

10. 

6. 

5. 

5. 

4.

7. 

3. 

7. 

3. 

4.

6.

Equivalents per million

Magnesium 

(Mg)

40 

32 

40 

12 

60

30 

36 

80 

28 

32

10

Sodium 

(Na)

3.05 

1.61 

1.13 

1.74 

1.22

2.74 

1.22

.32 

.52

1.70

Potassium 

(K)

Bicarbonate 

(HCOj)

2.23 

1.38 

2.43 

2.10 

1.93

2.56 

2.10 

2.16 

2.10 

2.03

2.49

Carbonate 

(C03)

0.13 

.00 

.00 

.00 

.07

.13 

.07 

.13 

.07 

.00

"

Sulfate 

(S04 )

8.64 

5.25 

3.44 

3.37 

2.64

4.89 

1.44 

4.48 

1.21 

2.56

3.77

Chloride 

(Cl)

2.43 

1.24 

.68 

1.41 

1.10

2.48 

.96 

.87 

.23 

.27

1.50

F
PART 8. WESTERN GULF OF MEXICO B

SABINE RIVER BASIN 

8-305. SABINE RIVER NEAR RULIFF

LOCATION. At gaging station at bridge on State Highway 12, 2.4 miles north of Ruliff, Newton 

Railway Co. bridge, and 4.5 miles downstream from Cypress Creek. 

DRAINAGE AREA. 9,329 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1945 to September 1946, October 1947 to Septem

Water temperatures: October 1947 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 620 micromhos Jan. 21; minimum daily

Percent sodium: Maximum, 80 Oct. 11-19; minimum, 44 June 12-30.

Sodium-adsorption-ratio: Maximum, 4.79 Oct. 11-19; minimum, 1.31 Apr. 1-16. 

EXTREMES, 1945-46, 1947-65. Specific conductance: Maximum daily, 774 micromhos Dec. 26, 194

Percent sodium: Maximum, 86 Dec. 26-27, 1948; minimum, 14 Sept. 18-22, 27, 1958.

Sodium-adsorption-ratio (1961-65): Maximum, 4.79 Oct. 11-19, 1964; minimum, 0.55 Sept. 18-2

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium (N

from determined constituents.

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-10, 1964.

Jan 1-17, 1965..

Feb. 11-14,

Runoff 

(acrefeet)

11,643 

9,997 

9,306 

9,695 

24 , 581 

13,646

152,390 

48,387 

21,818 

54,800 

21 , 898 

43,656

151,575 

17,415 

149,125 

237,818 

257,290 

459,531

Silica 

(Si02) 

ppm

14 

13 

15 

17 

16 

12

12 

16 

15 

Q.Q 

10 

15

11 

11 

11 

9.6 

10 

9.7

Equivalents per million

Calcium 

(Ca)

0.30 

,40 

.45 

.41 

.32 

.24

.35 

.50 

.80 

.95 

.41 

.46

.27 

.35 

.35 

.50 

.70 

.37

Magnesium

(Mg)

0.18 

.36 

.31 

.27 

.18 

.12

.19 

.12 

.48 

.11 

.27 

.22

.13 

.21 

.21 

.20 

.30 

.19

Sodium

(Na)

1.57 

2.96 

2.18 

1.96 

1.39 

1.00

1.44 

1.26 

2.91 

.78 

2.31 

1.61

.78 

1.52 

1.09 

1.13 

1.22 

.70

Potassium 

(K)

0.07 

.06

.07

Bicarbonate

(Hccg

0.56 

.85 

.79 

.67 

.44 

.28

.33 

.39 

.46 

.31 

.31 

.33

.20 

.20 

.20 

.36 

.66 

.30

Caraonate 

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

0.14 

.29 

.29 

.29 

.18 

.19

.29 

.27 

.60 

.17 

.37 

.40

.25 

.40 

.40 

.42 

.46 

.35

Chloride

(ci)

1.38 

2.57 

1.83 

1.64 

1.27 

.85

1.35 

1.27 

3.13 

.76 

2.31 

1.55

.71 

1.47 

1.04 

1.04 

1.10 

.65

Fl

ri

(

0
SABINE RIVER BASIN Continued

8-305. SABINE RIVER NEAR RULIFF, TEX. 

Chemical analyses, water year October 1964 to Septe

Date 

of 

collection

Apr. 17-30, 1965

Sept. 24-26, 

28-30.........

Sept. 27........

Total or 

weighted 

average

Runoff 

(acrefeet)

90,803 

44,263 

288,230 

260,727 

376,784

113,629 

37,077 

18,339

24,182 

6,288

2,954,992

Silica 

(Si02 ) 

ppm

18 

19 

9.2 

11 

9.6

13 

19 

19

12 

10

11

Equivalents per million

Calcium 

(Ca)

0.65 

.70 

.41 

.65 

1.10

.75 

.60 

.90

.40 

.60

0.55

Magnesium 

(Mg)

0.35 

.48 

.17 

.21 

.18

.23 

.36 

.52

.40 

.48

0.22

Sodium

(Na)

1.61 

2.09 

.96 

.87 

1.00

1.13 

1.74 

1.78

1.48 

3.26

1.09

Potassium

(K)

~

0.08

::

--

Bicarbonate

(Hccg

0.56 

.70 

.30 

.67 

1.16

.85 

.87 

.95

.54 

.75

0.52

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00

.00 

.00

0.00

Sulfate 

(S04 )

0.52 

.54 

.35 

.35 

.31

.29 

.27 

.29

.31 

.50

0.35

Chloride

(Cl)

1.50 

2.00 

.85 

.68 

.79

1.02 

1.52 

1.95

1.41 

3.07

0.99

F
NECHES RIVER BASIN

8-410. NECHES RIVER AT EVADALE, T

LOCATION (revised). At gaging station at bridge on U.S. Highway 96, at Evadale, Jasper Count

Village Creek.

DRAINAGE AREA. 7,951 square miles. 

RECORDS AVAILABLE.--Chemical analyses: October 1947 to September 1965.

Water temperatures: October 1947 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 418 micromhos Oct. 17; minimum dail

Percent sodium: Maximum, 71 Oct. 14-31; minimum, 45 July 1-11.

Sodium-adsorption-ratio: Maximum, 3.57 Oct. 14-31: minimum, 1.25 June 15-30. 

EXTREMES, 1947-65. Specific conductance: Maximum daily, 422 micromhos Jan. 25, 1957; minimu

Percent sodium: Maximum, 76 Jan. 21-31, 1957; minimum, 14 June 4-18, 1950.

Sodium-adsorption-ratio (1961-65): Maximum, 3.57 Oct. 14-31, 1964; minimum, 0.40 Sept. 17

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium (

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. -13, 1964. 

Oct . 4-31. ..... 

Nov. -30. .....

Dec. 1-23. . .

Dec. 4-31 . . 

Jan. -31, 1965.

Feb. 2-28 ....

Mar. -15....... 

Mar. 16-31. .....

May 1-23. .......

June 1-14 .......

Runoff 

(acrefeet)

4,848 

11,603 

11,187 

3,570 

9,180

5,728 

38,614 

14,945 

81,027 

106,929

102,284 

255,451 

97,261 

35,576 

176.025

Silica 

(Si02) 

ppm

18 

14 

18 

17 

14

15 

14 

14 

12. 

9.9

11 

11 

5.2 

10 

11

Equivalents per million

Calcium 

(Ca)

0.50 

.65 

.80 

.60 

.41

.70 

.60 

.60 

.50 

.42

.45 

.45 

.60 

.42 

.41

Magnesium 

(Mg)

0.52 

. 39 

.42 

.34 

.23

.26 

.28 

.28 

.24 

.18

.27 

.23 

.40 

.28 

.23

Sodium 

(Na)

1 44 

2.57 

2.04 

1.74 

.78

2.09 

2.00 

1.96 

1.48 

1.04

1.13 

.83 

1.13 

.83 

.74

Potassium 

(K)

0.07

.09 

.08

Bicarbonate 

(HCO3)

1.03 

1.08 

.98 

.77 

.39

79 

.72 

.67 

49 

.36

.36 

.36 

.54 

39 

39

Carbonate 

(C03)

0.00 

00 

.00 

.00 

00

00 

.00 

.00 

00 

00

.00 

.00 

00 

.00 

00

Sulfate

(S04 )

0 29 

48 

.48 

40 

29

46 

.54 

46 

42 

.46

.56 

48 

42 

.33 

.29

Chloride 

(ci)

1 21 

2.03 

1.78 

1 47 

73

1.78 

1.72 

1 69 

1 27 

79

.93 

73 

1 13 

79 

65

F

r

0 
NECHES RIVER BASIN Continued

8-410. NECHES RIVER AT EVADALE, TEX.--

Chemical analyses, water year October 1964 to S

Date 

of 

collection

June 15-30, 1965

July 12-31. .....

Sept. 1-30 ....

Total or 

weighted 

average

Runoff 

(acrefeet)

82,195 

45,295 

39,511 

38,922 

40,820

1,200,971

Silica 

(Si02) 

ppm

13.0 

14.0 

15.0 

14.0 

14.0

11

Equivalents per million

Calcium 

(Ca)

0.60 

.60 

.65 

.65 

.70

0.50

Magnesium 

(Mg)

0.28 

.36 

.35 

.35 

.30

0.27

Sodium

(Na)

0.83 

.87 

1.13 

1.22 

1.31

1.04

Potassium 

(K)

0.09

~

Bicarbonate

(Hccg

0.66 

.74 

.77 

.85 

.90

0.51

Carbonate 

(CO,)

0.00 

.00 

.00 

.00 

.00

0.00

Sulfate

(S04 )

0.31 

.29 

.29 

.29 

.29

0.40

Chloride

(Cl)

0.73 

.87 

1.04 

1.07 

1.10

0.93

F

0
TRINITY RIVER BASIN

8-665. TRINITY RIVER AT ROMAYOR

LOCATION. At gaging station at bridge on State Highway 105, 1.9 miles south of Romayor, Liber

Railway Co. bridge, and 3.7 miles downstream from Big Creek. 

DRAINAGE AREA. 17,186 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1945 to November 1949, February 1950 to Septem

Water temperatures: February 1950 to September 1951, April 1953 to January 1959, March 1961 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,160 micromhos Sept. 12; minimum da

Percent sodium: Maximum, 64 Sept. 1-24, 25-30; minimum, 27 Feb. 16-18.

Sodium-adsorption-ratio: Maximum, 4.68 Sept. 1-24: minimum, 0.73 May 13-31- 

EXTREMES, 1945-50, 1953-65.--Specific conductance: Maximum daily, 3,800 micromhos Oct. 30, 19

Percent sodium: Maximum, 86 Nov. 7, 1953; minimum, 23 June 11-20, 1946.

Sodium-adsorption-ratio (1961-65): Maximum, 7.13 Feb. 5-7, 1964; minimum, 0.73 May 13-31, 1

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium (N

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-31, 1964. 

Nov. 1-15.......

Jan. 1-23, 1965.

Feb 13 14

Mar. 12-30......

May 12..........

Runoff 

(acrefeet)

342,301 

145,190 

157,448 

502,108 

156,887 

61,170

67,914 

124,602 

55,736 

32,132 

593,316 

282,764

174,411 

32,331 

326,559 

64,614 

33,535 

10.393

Silica

(Si02) 

ppm

9.5 

8.0 

11 

7.6 

8.8 

8.0

4.8 

9.2 

15 

10 

8.6 

8.1

8.1 

8.5 

9.4 

7.5 

14 

14

Equivalents per million

Calcium

(Ca)

2.54 

2.30 

2.45 

2.20 

2.54 

1.00

2.30 

2.54 

1.65 

2.05 

2.05 

2.30

2.84 

1.15 

1.80 

3.04 

3.09 

2.94

Magnesium 

(Mg)

0.28 

.26 

.31 

.32 

.38 

.18

.42 

.34 

.27 

.19 

.19 

.38

.42 

.27 

.44 

.48 

.67 

.34

Sodium 

(Na)

1.61 

1.61 

1.61 

1.00 

1.96 

.78

2.44 

1.48 

1.09 

2.26 

.83 

1.17

1.65 

.70 

1.26 

2.87 

4.09 

2.96

Potassium 

(K)

0.14 

.12

.10

Bicarbonate

(Hccg

2.39 

2.26 

2.36 

2.10 

2.43 

.92

2.18 

2.16 

1.54 

1.93 

1.87 

2.08

2.52 

1.05 

1.67 

2.69 

2.64 

2.47

Carbonate

(ccg

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.13 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

Sulfate

(S0«)

0.83 

.85 

.90 

.50 

.94 

.46

1.04 

.98 

.65 

.71 

.62 

.83

1.12 

.58 

.79 

1.42 

1.60 

1.44

Chloride

(CD

1.24 

.93 

1.02 

.82 

1.58 

.51

1.81 

.93 

.76 

1.33 

.51 

.87

1.18 

.45 

1.07 

2.20 

3.41 

2.20

F

r

0
TRINITY RIVER BASIN Continued

8-665. TRINITY RIVER AT ROMAYOR, TEX. 

Chemical analyses, water year October 1964 to Septe

Date

of 

collection

May 13-31, 1965.

Total or 

weighted 

average

Runoff 

(acrefeet)

1,124,549 

684,774 

168,897 

44,378 

30,387 

41,197 

33,132 

17,946

5,308,671

Silica 

(Si02 ) 

ppm

16 

10 

8.3 

8.3 

6.3 

8.5 

12 

10

10

Equivalents per million

Calcium 

(Ca)

1.70 

2.20 

2.74 

2.99 

3.14 

3.19 

2.99 

2.00

2.16

Magnesium 

(Mg)

0.14 

.28 

.22 

.31 

.38 

.33 

.59 

.44

0.28

Sodium 

(Na)

0.70 

1.09 

1.83 

1.96 

2.96 

5.31 

6.26 

4.31

1.28

Potassium 

(K)

0.11

"

Bicarbonate 

(HC0 3)

1.54 

2.10 

2.82 

2.90 

3.15 

3.34 

3.44 

2.21

2.02

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00 

.00 

.00 

.00

--

Sulfate 

(S04 )

0.46 

.67 

.90 

.83 

1.04 

1.50 

1.60 

1.17

0.71

Chloride 

(Cl)

0.51 

.73 

.99 

1.64 

2.26 

3.89 

4.71 

3.27

0.93

F

r

0
BRAZOS RIVER BASIN 

8-1140. BRAZOS RIVER AT RICHMOND, 

LOCATION. At gaging station at bridge on U.S. Highway 59 in Richmond, Fort Bend County, 925 f

DRAINAGE AREA. 44,020 square miles, approximately, of which 9,240 square miles is probably no

RECORDS AVAILABLE. Chemical analyses: October 1945 to September 1965.

Water temperatures: November 1950 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 916 micromhos Sept. 18; minimum dail

Percent sodium: Maximum 46 Dec. 18-31; minimum, 21 May 13-17.

Sodium-adsorption-ratio: Maximum, 2.41 Dec. 18-31; minimum, 0.59 May 13-17. 

EXTREMES, 1945-65. Specific conductance: Maximum daily, 2,540 micromhos Sept. 4, 1951; minim

Percent sodium: Maximum, 76 Dec. 3-4, 1945; minimum, 18 Aug. 27-31, 1947.

Sodium-adsorption-ratio (1962-65): Maximum, 5.45 Aug. 1-10, 1962; minimum, 0.52 Sept. 28-30

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium (N

Chemical analyses, water vear OctohRr 1964 t

Date 

of 

collection

Oct. 1-10, 1964.

Jan. 1-22, 1965.

Feb. 17-22......

Apr. 16-22......

Runoff

(acrefeet)

77 , 792 

103,716 

87,114 

77,078 

83,663 

20,723

30,442 

56,565 

59,508 

88,015 

394,155 

335,127

488,172 

192,436 

383,252 

51,632 

265,150 

77,419

Silica 

(Si02) 

ppm

9.1 

6.7 

7.3 

7.7 

7.4 

9.1

8.7 

6.8 

5.9 

4.4 

9.1 

9.4

7.3 

8.1 

7.7 

6.8 

8.1 

8.6

Equivalents per million

Calcium

(Ca)

2.30 

2.54 

2.00 

1.90 

2.15 

2.30

3.14 

2.40 

3.04 

3.14 

2.00 

2.89

1.90 

2.40 

3.09 

3.04 

2.30 

2.74

Magnesium 

(Mg)

0.36 

.82 

.64 

.48 

.65 

.58

.82 

.60 

.90 

.99 

.46 

.55

.40 

.48 

.77 

.74 

.38 

.64

Sodium

(Na)

0.78 

1.74 

1.83 

.96 

1.57 

1.13

3.26 

2.39 

3.39 

3.31 

.74 

1.74

.87 

1.91 

2.04 

2.48 

1.09 

1.91

Potassium

(K)

0.09

.11 

.09

Bicarbonate

(Hccg

2.29 

2.57 

2.07 

2.07 

2.26 

2.49

2.75 

2.13 

2.64 

2.79 

2.02 

2.67

1.92 

2.15 

2.84 

2.77 

2.21 

2.72

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

Sulfate 

(SO,)

0.58 

.83 

.85 

.56 

.81 

.44

1.31 

.98 

1.44 

1.58 

.56 

.87

.46 

.62 

1.04 

1.44 

.67 

.83

Chloride

(Cl)

0.65 

1.72 

1.50 

.68 

1.27 

1.02

3.10 

2.23 

3.24 

3.27 

.56 

1.58

.76 

2.03 

1.89 

1.97 

1.02 

1.75

F

r

(

0
BRAZOS RIVER BASIN Continued

8-1140. BRAZOS RIVER AT RICHMOND, TEX. 

Chemical analyses, water year October 1964 to Septe

Date 

of 

collection

Apr. 23-30, 1965

Sept. 1-21, 

24-25, 27-28.. 

Sept. 22-23, 

26, 29-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

42,859 

65,574 

327,868 

107,107 

1,616,965 

551,008

423,511 

170,975 

172,800 

419,504 

144,635 

178,774

227,935 

84,645 

24,337

7,430,456

(SiOj) 

ppm

6.4 

8.6 

8.9 

8.5 

9.7 

9.4

11 

11 

11 

9.1 

9.6 

9.9

8.1 

10 

9.2

9.0

Equivalents per million

Calcium

(Ca)

2.99 

2.84 

2.05 

2.50 

2.20 

2.50

2.50 

2.59 

2.30 

2.64 

2.89 

3.24

3.04 

3.44 

2.45

2.45

Magnesium 

(Mg)

0.90 

.82 

.41 

.60 

.46 

.64

.46 

.61 

.54 

.64 

.67 

.76

.78 

1.07 

.59

0.56

Sodium

(Na)

2.31 

2.31 

.65 

2.35 

1.00 

2.00

.00 

.39 

.00 

.13 

.09 

.74

2.00 

3.39 

1.35

1.39

Potassium 

(K)

"

~

0.08

~

Bicarbonate 

(HCOj)

2.88 

2.72 

2.18 

1.97 

2.29 

2.25

2.64 

2.62 

2.43 

2.77 

2.98 

3.41

3.25 

3.41 

2.52

2.44

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00

0.00

Sulfate 

(SO,)

1.23 

1.21 

.50 

1.23 

.58 

.96

.56 

.77 

.62 

.67 

.73 

.85

.85 

1.54 

.75

0.74

Chloride

(Cl)

2.09 

1.95 

.39 

2.20 

.76 

1.92

.73 

1.18 

.79 

.96 

1.07 

1.44

1.69 

2.93 

1.10

1.20

F

r

0
COLORADO RIVER BASIN

8-1580. COLORADO RIVER AT AUST

LOCATION. At raw water intake at Austin City Waterplant, just downstream from Laraar Bouleva

Creek, and 4.5 miles upstream from gaging station at Montopolis Bridge on U.S. Highway 18

DRAINAGE AREA. 38,400 square miles, approximately, above gaging station, of which 11,900 sq

RECORDS AVAILABLE. Chemical analyses: October 1947 to September 1965.

Water temperatures: October 1947 to September 1965.

EXTREMES, 1964-65. Specific conductance: Maximum daily, 685 micromhos Oct. 25; minimum dai

Percent sodium: Maximum, 32 Oct. 1-31; minimum 17 Feb. 1 to Mar. 31. 

Sodium-adsorption-ratio: Maximum, 1.38 Oct. 1-31; minimum, 0.57 Mar. 1-31.

EXTREMES, 1947-65. Specific conductance: Maximum daily, 737 micromhos Jan. 12, 1964; minim

Percent sodium: Maximum, 46 Nov. 1-30, 1951; minimum, 15 Nov. 1-30, 1953, Jan. 1-31, 1954

Sodium-adsorption-ratio (1962-65): Maximum, 1.69 Sept. 1-30, 1964; minimum, 0.57 Mar. 1-3

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium 

determined constituents. Records of specific conductance of daily samples available in d

sampling point and gaging station except during periods of heavy local rains.

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-31, 1964. 

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

Jan. 1-31, 1965. 

Feb. 1-28. ......

Mar. 1-31.......

.Time 1-30. ......

July 1-31. ......

Sept. 1-30. .....

Total or 

weighted 

average

Runoff

(acrefeet)

8,116 

6,605 

5,024 

16,786 

43,652 

16,356

52,364 

256,157 

385,340 

114 , 059 

2,856 

84,258 

76,046

1,067,628

1 

Silica 

(Si02) 

ppm

9.2 

11 

15 

12 

11 

13

8.8 

12 

0 

9.3 

8 

7.7 

7.5

9.8

Equivalents per million

Calcium 

(Ca)

2.40 

3.09 

1.95 

2.69 

2.50 

2.50

2.69 

2. 50 

">,. ">.n 

2.35 

2.50 

2.30 

2.40

2.37

Magnesium 

(Mg)

1.81 

1.48 

1.73 

1.73 

1.56 

1.65

1.73 

1.56 

I. V>. 

1.15 

1.56 

1.15 

1.15

1.38

Sodium

(Na)

2.00 

.39 

.35 

.17 

.87 

.83

.17 

.65 

.48 

.13 

.48 

.31 

.22

1.40

Potassium 

(K)

0.09

.07 

.05

.07 

.09

--

Bicarbonate 

(HCCg

3.21 

3.90 

2.92 

3.47 

3.36 

3.36

3.44 

3.02 

3.75 

2.95 

2.62 

2.97 

2.93

2.96

Carbonate 

(C03)

0.00 

.00 

.00 

.10 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00 

.00

--

Sulfate

(SO,)

0.94 

.75 

.75 

75 

.58 

.60

.69 

.79 

.67 

.54 

.58 

.56 

.56

0.67

Chloride

(Cl)

2.23 

1.24 

1.30 

1.33 

.96 

.87

1.35 

1.86 

1.55 

1.18 

2.34 

1.21 

1.24

1.49

F

0

0
COLORADO RIVER BASIN Cont

8-1620. COLORADO RIVER AT WHAR

LOCATION. At gaging station at bridge on U.S. Highway 59, in Wharton, Wharton County, 1,000 

12 miles upstream from Jones Creek.

DRAINAGE AREA. 41,380 square miles, approximately, of which 11,900 square miles is probably 

RECORDS AVAILABLE. Chemical analyses: April 1944 to September 1965.

Water temperatures: October 1945 to September 1948, March 1950 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 683 micromhos Oct. 21, 25; minimum 

Percent sodium: Maximum, 32 May 1-11; minimum, 10 Mar. 1-31.

Sodium-adsorption-ratio: Maximum, 1.28 May 1-11; minimum, 0.33 Oct. 27. 

EXTREMES, 1944-65. Specific conductance: Maximum daily, 904 micromhos Oct. 29, 1963; minimu

Percent sodium: Maximum, 43 Nov. 30, 1951; minimum, 7 Jan. 19-24, 1945.

Sodium-adsorption-ratio (1962-65): Maximum, 1.82 Sept. 1-18, 1964; minimum, 0.33 Oct. 27, 

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium 

determined constituents. Records of specific conductance of daily samples available in d

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-26, 28-31 

1964 ..........

Nov. 1-5, 8-30..

Jan. 1-3, 10-21,

Feb. 1-13, 22-28

Apr. 1-30.......

May 24-29.......

Sept. 1-30......

Total or 

weighted 

average

Runoff 

(acrefeet)

39,094 

1,458 

29,657 

3,610 

23,058

9,521 

6,950 

117,600 

100,602 

178,830

61,795 

50 , 579 

18,415 

9,045 

269,673 

84,175

83 , 107 

48,674 

363,991 

114,859 

51 , 281 

55,696

1,721,670

Silica 

(Si02) 

ppra

11 

12 

9.6 

12 

9

4.6 

6 

9.2 

11 

8.4

7.6 

4.6 

5.7 

7 

8.8 

9.2

13 

12 

7.6 

8.9 

9.4 

9.6

8.9

Equivalents per million

Calcium

(Ca)

2.64 

2.00 

2.79 

1.70 

2.89

3.09 

2.10 

2.30 

3.14 

2.05

2.79 

2.84 

2.20 

3.09 

2.25 

2.84

2.00 

2.50 

2.45 

2.30 

2.15 

2.30

2.42

Magnesium 

(Mg)

1.32 

.67 

1.15 

.50 

1.07

1.40 

.82 

.64 

.82 

.39

1.97 

.99 

1.48 

1.40 

.49 

1.23

.66 

.62 

1.15 

1.32 

1.15 

1.65

0.94

Sodium

(Na)

1.57 

.38 

1.39 

.78 

1.65

1.57 

1.22 

.83 

1.13 

.48

.52 

1.22 

1.74 

1.83 

.70 

1.48

.91 

.96 

1.3] 

1.13 

1.48 

.87

1.04

Potassium

(K)

0.09 

.11 

.08

.09

-

Bicarbonate 

(HCOj)

3.34 

1.95 

3.08 

1.88 

3.44

3.90 

2.59 

2.38 

3.21 

2.16

3.11 

2.88 

2.75 

3.34 

2.29 

3.16

2.16 

2.56 

2.87 

2.88 

2.85 

2.88

2.70

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate 

(S04 )

0.83 

.52 

1.04 

.54 

.81

.81 

.50 

.73 

.90 

.44

1.02 

1.00 

.87 

.87 

.54 

.75

.46 

.71 

.69 

.65 

.65 

.62

0.66

Chloride

(Cl)

1.52 

.51 

1.18 

.51 

1.35

1.55 

1.02 

.59 

.90 

.28

1.13 

1.16 

1.75 

2.03 

.56 

1.58

.90 

.79 

1.33 

1.21 

1.24 

1.33

0.99
GUADALUPE RIVER BASIN 

8-1765. GUADALUPE RIVER AT VICTO

LOCATION. At gaging station at bridge on U.S. Highway 59 in Victoria, Victoria County, 1,300 

10 miles upstream from Coleto Creek. 

DRAINAGE AREA. 5,161 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1945 to September 1946, October 1948 to Septem

Water temperatures: November 1950 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 721 micromhos Apr. 12; minimum daily

Percent sodium: Maximum, 33 Aug. 1-31: minimum, 14 June 6-12.

Sodium-adsorption-ratio: Maximum, 1.30 Aug. 1-31; minimum, 0.38 June 6-12. 

EXTREMES, 1945-46, 1948-65. Specific conductance: Maximum daily, 1,950 micromhos Jan. 11-17

Percent sodium: Maximum, 67 July 23-24, 1950; minimum, 13 May 7-10, 1958.

Sodium-adsorption-ratio (1962-65): Maximum, 1.56 Sept. 10-15, 1963; minimum, 0.38 June 6-12

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium (

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-31, 1964.

Jan. 1-22,24,

Jan. 23, 25-28..

Apr. 1-30.......

May 1-12.. ......

Runoff

(acrefeet)

51,281 

21,755 

19,658 

16,036 

32,342

37,180 

54,744 

6,385

59,883

148,665 

21,382 

78,151 

72,595 

25.515

Silica 

(Si02 ) 

ppm

12 

10 

10 

12 

13

9.5 

9.4 

11

9.5

9.4 

11 

11 

11 

12

Equivalents per million

Calcium 

(Ca)

2.59 

2.79 

2.30 

3.09 

3.59

3.29 

1.85 

2.30

2.20

1.80 

2.94 

3.54 

3.04 

3.04

Magnesium 

(Mg)

0.99 

.99 

.74 

1.07 

1.23

1.40 

.43 

.52

.54

.34 

.78 

1.40 

1.40 

1.40

Sodium 

(Na)

0.78 

1.09 

.70 

.83 

1.13

1.09 

.74 

.96

.74

.52 

1.04 

1.17 

1.26 

1.26

Potassium 

(K)

0.07

.06

.06

Bicarbonate 

(HCO3)

3.21 

3.44 

2.82 

3.88 

4.52

4.33 

2.07 

2.52

2.34

1.97 

3.18 

4.06 

3.77 

3.82

Carbonate 

(C03)

o

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Sulfate

(S04 )

0.46 

.50 

.44 

.46 

.48

.54 

.37 

.54 

.58 

.54

.33 

.60 

.71 

.69 

.62

Chloride 

(Cl)

0.65 

.85 

.45 

.62 

.87

.96 

.51 

.68 

1.13 

.56

.31 

.93 

1.27 

1.24 

1.18
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NUECES RIVER BASIN

8-2110. NUECES RIVER NEAR MATHIS

LOCATION. At intake tower at Wesley E. Seale Dam, 0.6 mile upstream from gaging station at br

Patricio County.

DRAINAGE AREA. 16,660 square miles. 

RECORDS AVAILABLE. Chemical analyses: October 1947 to September 1965.

Water temperatures: October 1947 to September 1964. 

EXTREMES, 1964-65.--Specific conductance: Maximum daily, 599 micromhos Oct.

Percent sodium: Maximum, 49 Oct. 1-7; minimum, 20 Jan. 1-31.

Sodium-adsorption-ratio: Maximum, 2.39 Oct. 1-7; minimum, 0.65 Jan. 1-31. 

EXTREMES, 1947-65.--Specific conductance: Maximum daily, 1,040 micromhos July 1, 1948; minimu

Percent sodium: Maximum, 63 May 1-20, 1953; minimum, 18 Dec. 1-31, 1958.

Sodium-adsorption-ratio (1961-65): Maximum, 2.57 Aug. 1-31, 1962: minimum, 0.65 Jan. 1-31, 

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium (

Chemical analyses, water year October 1964 to 

minimum daily, 

Date 

of 

collection

Oct. 1-7, 1964. .

Jan. -31, 1965. 

Feb. -28.......

July -31.......

Sept. 1-30......

Total or 

weighted 

average

Runoff

(acrefeet)

40,848 

149,284 

22,850 

4,538 

4,249 

69,810

31,666 

6,188 

163,250 

52,066 

9, '15 

8,116 

7,319

569,899

Silica

(Si02) 

ppra

21 

17 

12 

13 

13 

15

14 

16 

13 

15 

16 

18 

20

15

Equivalents per million

Calcium

(Ca)

2.05 

2.30 

2.35 

2.50 

2.59 

2.59

2.64 

2.69 

2.64 

2.25 

2.50 

2.69 

2.89

2.46

Magnesium 

(Mg)

0.59 

.34 

.35 

.42 

.35 

.37

.56 

.43 

.42 

.27 

.34 

.35 

.43

0.39

Sodium

(Na)

2.74 

1.22 

.96 

.96 

.78 

1.00

1.04 

.96 

.39 

.17 

.00 

.39 

.44

1.32

Potassium 

(K)

0.23 

.17

.17 

.19

"

Bicarbonate 

(HCO^

3.18 

2.90 

2.88 

3.05 

3.15 

3.18

3.28 

3.31 

3.29 

2.66 

9.98 

3.31 

3.54

3.09

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

00 

.00

.00 

.00 

.00 

.00 

.00 

00 

.00

0.00

Sulfate 

(S04 )

0.62 

.37 

.33 

.33 

.31 

31

.37 

.37 

.42 

.44 

.46 

.48 

.48

0.40

Chloride

(Cl)

1.69 

.56 

.42 

.48 

.51 

.45

59 

.62 

.71 

.59 

.51 

.62 

.71

0.67

F

r

(

0

0
RIO GRANDE BASIN 

8-2492. RIO GRANDE ABOVE CULEBRA CREEK, NEA

LOCATION.--Half a mile southeast of La Sauses, 7 miles upstream from Culebra Creek, and 15 mi

DRAINAGE AREA. 7,700 square miles, approximately, upstream from gaging station (includes 2,94

Valley, Colo.). 

RECORDS AVAILABLE. Chemical analyses: October 1946 to September 1965.

Water temperatures: July 1964 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 703 micromhos Aug. 25; minimum daily

Percent sodium: Maximum, 47 Oct. 1-7; minimum, 26 Nov. 12-16.

Sodium-adsorption-ratio: Maximum, 2.11 Oct. 1-7; minimum, 0.53 Nov. 12-16. 

EXTREMES, 1946-65. Specific conductance: Maximum daily, 1,110 micromhos Sept. 21, 1959; mini

Percent sodium: Maximum, 72 May 11-14, 1957; minimum, 16 Dec. 1, 3-10, 1946.

Sodium-adsorption-ratio: Maximum, 2.11 Oct. 1-7, 1964; minimum, 0.53 Nov. 12-16, 1964. 

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potass

sampling point and the gaging station is usually dry at its mouth, 

only after heavy local rainfall.

Inflow from this and oth

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-7, 1964..

Dec. 25-31......

Jan. 1-6, 1965..

Feb. 1-28.......

Runoff 

(acrefeet)

135 

1,466 

807 

1,055 

4,631 

591

738 

1,662 

466 

575 

1,685 

625

179 

1,402 

1,571 

298 

9,378 

12,329

Silica

(sicg

ppm

21

30

Equivalents per million

Calcium

(Ca)

2.05 

1.90 

2.20 

.75 

.65 

1.10

1.65 

2.20 

2.15 

2.00 

2.10 

1.65

1.90 

1.55 

1.50 

.85 

1.35 

1.35

Magnesium

(Mg)

0.79 

.58 

.76 

.29 

.27 

.32

.49 

.74 

.77 

.52 

.62 

.55

.58 

.41 

.48 

.43 

.37 

.37

Sodium

(Na)

2.52 

2.00 

2.04 

.52 

.36 

.65

.13 

.78 

.70 

.26 

.39 

.96

1.35 

.96 

.91 

.65 

.83 

.74

Potassium 

(K)

0.08

.13

Bicarbonate 

(HC0 3)

3.51 

3.21 

2.95 

1.15 

.92 

1.31

2.00 

2.92 

2.95 

2.36

2.00

1.98 

1.95 

1.15 

1.74 

1.67

Carbonate 

(CO,)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00

.00

o c

o c

Sulfate 

(S04 )

0.31

.69

Chloride

(Cl)

0.07

.15

Fl

ri

(

0
May 3 9

May 20-25....... 

May 26-31.......

uly 1-3........

uly 17-22......

Sept. 21-30.....

Total or 

weighted 

average

2,475

1,888

18,744

24,397 

13,686

31,636 

20,529

70,473

8,271

10^342

3,642

13,111

418,649

_

30__~-

25__-

2.74

1.55

1.65

.10 

.65

.35 

.55

.15

.75

.95

.95

.10

1.50

.62

.90

.55

.66

.63

.34 

.51

.43 

.59

.43

.59

.65

.77

99

.26

0.50

1.17

1.78

1.17

1.22

.61

1.04

.70 

1.00

.96 

1.26

.87

1.17

1.26

1.26

1.52

.52

1.00

.22__~-

.14___-

.13

.75

.43

.64

.13

.85

.25 

.56

.97 

.54

.28

.87

.03

.07

.26

.66

.16

1.74

.00

.00

.00

.00

.00

.00

.00 

.00

.00 

.00

.00

.00

.00

.00

.00

.00

.00

.00

0 00

_

2.44__

__

--

1.67___"

_

.45___

.23____"
RIO GRANDE BASIN Continu

8-3130. RIO GRANDE AT OTOWI BRIDGE, NEAR S

LOCATION. At gaging station, 400 feet downstream from bridge on State Highway 4, 1.8 miles 

Pojoaque River, and 7 miles west of Pojoaque, Santa Fe County.

DRAINAGE AREA. 14,300 square miles, approximately (includes 2,940 square miles in closed ba

RECORDS AVAILABLE. Chemical analyses: October 1946 to September 1965.

Water temperatures: October 1948 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 585 micromhos Aug. 3; minimum daily

Percent sodium: Maximum, 31 Oct. 1-31; minimum, 16 Apr. 21-30.

Sodium-adsorption-ratio: Maximum, 1.08 Oct. 1-31, Dec. 1-31: minimum, 0.43 Apr. 21-30, Ma

EXTREMES, 1946-65. Specific conductance: Maximum daily, 1,310 micromhos Aug. 5, 1963: mini

Percent sodium: Maximum, 43 Sept. 13-30, 1958; minimum, 12 Apr. 26-30, Aug. 1-7, 1958.

Sodium-adsorption-ratio (1961-65): Maximum, 1.56 July 5-13, 1962; minimum, 0.40 Apr. 19-3

REMARKS. Flow affected by ice Jan. 11-19.

Chemical analyses, water year October 1964 t

Date 

of 

collection

Oct. 1-31, 1964.

Jan. 1-8, 1965..

Anr. 3-20....... 

Apr. 21-30......

Runoff 

(acrefeet)

14,388 

11,423 

21,104 

7,408 

26,132

9,283 

8,271 

24,912 

32,132 

6,553

44,152 

6,426 

6,307 

54,368 

71,008

Silica

(Si02) 

ppm

30 

27 

23 

28 

29

27 

17 

25 

25 

23

24 

21 

20 

31 

19

Equivalents per million

Calcium 

(Ca)

2.35 

2.45 

2.20 

2.50 

2.54

2.30 

2.99 

2.30 

2.25 

2.50

2.35 

2.64 

3.09 

9.5" 

2.10

Magnesium

(Mg)

0.57 

.61 

.60 

.70 

.78

.66 

.71 

.60 

.63 

.66

.63 

.80 

.82 

.6? 

.36

Sodium

(Na)

1.31 

1.26 

.78 

1.26 

1.39

1.17 

1.35 

1.13 

1.13

1.22

1.17 

1.31 

1.17 

.V7 

.48

Potassium 

(K)

::

0.09 

.0% 

.07

Bicarbonate 

(HCOj)

2.88 

2.85 

2.20 

2.79 

2.98

2.66 

2.43 

2.52 

2.43 

2.46

2.28 

2.18 

2.67 

?.?5 

2.03

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate

(S04 )

1.10 

1.23 

1.27 

1.48 

1.50

1.29 

2.48 

1.33 

1.44 

1.75

1.71 

2.42 

2.35 

1.6' 

.81

Chloride

(Cl)

0.25 

.25 

.13 

.26 

.28

.24 

.17 

.23 

.21 

.22

.21

.22 

.19 

.1T 

.09

F
May 1-31, 1965.

Aug. 3-4.......

Sept. 25-30....

Total or 

weighted 

average

255,174

35,226

14,638

13,567

1,177,868

19 

18

24

23

20

24

25

22

21

1.90

3.74

2.10

1.70

2.04

.18

.43

.54

.42

0.40

.44

.74

0.75

.06

_

_

"

1.72

2.46

1.75

1.98

.00

.00

.00

.00

0.00

.75 

.94

1.42

1.31

2.81

1.35

.96

1.12

.09 

.12

.17

.18

.12

.15

.12

1.41
RIO GRANDE BASIN--Continued

8-3583. RIO GRANDE CONVEYANCE CHANNEL AT SAN 

Pedro Armendaris Grant No 

outhwest of former site of

. 34, 51 mile 

San Marcial, Socorro County

dail

LOCATION (revised). At gaging station i 

bridge near Tiffany siding, 1.0 mile 

Co. bridge over floodway channel.

RECORDS AVAILABLE. Chemical analyses: March 1954 to September 1965. 

Water temperatures: March 1954 to September 1965. 

Sediment records: March 1954 to September 1965.

EXTREMES, 1964-65 . --Specif ic conductance: Maximum daily, 2,090 micromhos Sept. 

Percent sodium: Maximum, 60 Oct. 16-27, Nov. 1-2-, minimum, 26 Apr. 24-30. 

Sodium-adsorption-ratio: Maximum, 5.83 Oct. 16-27; minimum, 0.93 Apr. 24, 30.

EXTREMES, 1954-65. Specific conductance: Maximum daily, 2,860 micromhos Oct 25, 1956; minimu

Percent sodium: Maximum, 66 Oct. 1-20, Nov. 1-21, 1956, Oct. 1-9, 1959; minimum, 26 Apr. 24-

Sodium-adsorption-ratio (1961-65): Maximum, 5.83 Oct. 16-27, 1964: minimum, 0 . 93 Apr . 24-30, 

REMARKS. --Values reported for sodium (Na) are determined by analysis and do not include potassi

channel at San Marcial and Rio Grande floodway at San Marcial given in surface water records 

Rio Grande floodway at San Marcial given on page 88 .

Chemical ilyses vater year October 1964 to 

Date 

of 

collection

Oct. 1, 1964....

Oct. 3-10.......

Nov. 14-15......

Jan. 1-31, 1965. 

Feb. 1-28.......

Apr. 1-5........

Runoff

(acrefeet)

89 

63 

106 

13 

69

21 

44 

292 

73 

60 

13,626

21,767 

40,028 

35,488 

25,333 

4.314

Silica 

(Si03) 

ppm

44

"

Equivalents per million

Calcium 

(Ca)

5.99 

4.79 

4.94 

4.29 

4.94

4.29 

5.14 

5.14 

4.69 

5.14 

3.59

3.79 

3.59 

3.39 

3.39 

3.94

Magnesium

(Mg)

1.97 

1.48 

2.06 

1.32 

2.14

1.23 

2.14 

1.73 

1.40 

1.89 

.90

1.07 

.90 

.90 

.90 

.99

Sodium 

(Na)

6.96 

4.48 

9.53 

3.05 

10.96

3.18 

11.05 

7.57 

5.39 

7.92 

2.35

3.05 

2.44 

2.52 

2.61 

2.61

Potassium 

(K)

--

0.31

"

"

Bicarbonate 

(HCOJ

4.33 

3.80 

4.03 

3.34 

4.06

4.56

4.59 

3.57

3.70 

3.47 

3.34 

3.26 

3.70

Carbonate 

(C03)

0.00 

.00 

.00 

.40 

.00

.00

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

7.33

--

Chloride 

(Cl)

7.05

--

~~

F

r

(

0
Apr. 6-23, 1965.

Sept. 6-30......

Total or

average

29,240

59,901

34,036

30,496

527,238

_

_

23

_

_

_

_

25

3.49 

2.74

4.69

3.29

.63

1.15

.09

."48

3.74

2.18

_

.16

3.05

3.28

2.57

3.74

.00

.00

.00

.00

1.71

_

4.83

--

.45

_

1.24
RIO GRANDE BASIN Contin

8-3584. RIO GRANDE FLOODWAY AT SAN M

LOCATION (revised). At gaging station in Pedro Armendaris Grant No. 33, at Atchison, Topeka 

and 1.1 miles downstream from former site of San Marcial, Socorro County.

DRAINAGE AREA. 27,700 square miles, approximately (includes 2,940 square miles in closed ba

RECORDS AVAILABLE. Chemical analyses: May 1905 to April 1907, July 1946 to September 1965.

Water temperatures: January 1949 to September 1965.

Sediment records: July 1946 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,280 micromhos Aug

Percent sodium: Maximum, 34 July 13-14, Sept. 6-15; minimum, 23 May 15.

Sodium-adsorption-ratio: Maximum, 2.10 Sept. 6-15; minimum, 0.88 May 15. 

EXTREMES, 1946-65. Specific conductance: Maximum daily, 2,730 micromhos Apr

Percent sodium: Maximum, 65 May 1-10, 1951; minimum, 18 July 22-23, 1962.

Sodium-adsorption-ratio: (1961-65): Maximum, 7.73 Oct. 4-8, 1963; minim

minimum da

1953; mini

0.18 July 12, 

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include pota

prior to 1946 have been published in Water Bulletins of International Boundary and Water 

channel at San Marcial and Rio Grande floodway at San Marcial given in surface water reco

Rio Grande conveyance channel at San Marcial given of page 86. No Flow Oct. 1 to Apr. 25, 

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Apr. 26-30, 1965 

May 1-14........

July 4-12.......

July 19-22,

Aug. 5-10, 15-16 

Sept. 6-15......

Total or 

weighted 

average

Runoff 

(acrefeet)

10,711 

37,488 

3,570 

57,759 

55,934

11 , 821 

37,289 

6,724 

30,883 

3,293

4,421 

1,174

2,095 

20,628 

8,696 

1,839

294,325

Silica 

(Si02) 

ppm

22

22 

22

23

"

Equivalents per million

Calcium 

(Ca)

3.09 

2.64 

3.54 

2.59 

2.74

3.44 

2.69 

3.09 

2.59 

4.04

2.84 

5.59

2.64 

6.94 

4.09 

5.89

3.11

Magnesium 

(Mg)

0.55 

.60 

.82 

.49 

.52

.56 

.43 

.45 

.37 

.90

.56 

1.48

.52 

1.97 

1.07 

1.89

0.64

Sodium

(Na)

1.39 

1.26 

1.31 

1.22 

1.26

1.48 

1.31 

1.74 

1.13 

2.61

1.52 

2.74

1.57 

4.09 

2.39 

4.13

1.57

Potassium 

(K)

0.14 

.13

.14 

.13

-

Bicarbonate

(Hccg

3.08 

2.69 

3.54 

2.52 

2.67

2.84 

2.56

2.43 

3.02

2.57 

3.21

3.34 

4.57 

3.34 

4.70

2.80

Carbonate

(CO;,)

0.00 

.00 

.00 

.00 

.00

.00 

.00

.00 

.00

.00 

.00

.00

.00 

.00 

.00

0.00

Sulfate 

(S04)

1.58 

2.33

3.71 

6.45

-

Chloride

(Cl)

0.42 

.39

.96

.90

--
RIO GRANDE BASIN Continued

8-3640. RIO GRANDE AT EL PASO, 

rom 

LOCATION. At gaging station on downstream side of Courchesne Bridge, 5.6 miles upstre

Texas, and Cd. Juarez, and 1.7 miles upstream from the American Dam. 

DRAINAGE AREA. 29,267 square miles.

RECORDS AVAILABLE. Chemical analyses: 1933 to 1965. 

REMARKS. Chemical analyses by U.S. Department of Agricultural Research Service, U.S. Salinit

of daily samples and records of discharge for water year October 1964 to September 1965 gi

Bulletins 34 and 35.

Chemical analys water year October 1964 

Month

October 1964

November. . . .

December. . . .

January 1965

February. . . .

March .......

April. ......

May. .....

June ........

July. .......

September. . .

Total or

weighted

average

samples

31

29

28

30

28

31

24

24

30

31

32

(ar-rp- Vdoi e

feet)

498

482

498

498

450

3,603

15,233

523

39,570

57,122

51,219

29,812

199,508

(Si02) 

ppm

_

25

_

__

__

10

__

--

Equivalents per million

Calcium

(Ca)

6.29

5.44

6.04

5.59

5.59

5.04

4.44

5.69

3.44

2.84

2 94

3.59

4.30

Magnesium

(Mg)

3.21

2.55

2.39

2.63

2.39

1.81

1.48

2.22

1.07

.90

1.07

1.02

Sodium

(Na)

30.54

26.67

26.97

26.06

26.71

10.01

6.74

26.54

4.13

2.83

3.87

4.05

Potassium 

(K)

_

0.26

--

--

__

__

__

.14

__

Bicarbonate 

(HC03)

4.61

4.39

4.61

4.44

4.90

3.44

3.25

4 34

3.10

2.61

3.05

2.90

Carbonate 

(C03)

0.00

.00

.00

.27

.00

00

.00

00

.00

.00

.00

Sulfate 

(S04 )

18.30

15.89

15.91

15.47

15.59

7.08

5.48

15.74

3.64

2. 71

3.75

3.55

Chloride

(CD

17.60

14 95

15 15

14.36

14. 84

6.54

4.15

14.56

2.20

1.35

1.95

2.14
RIO GRANDE BASIN Continue

8-3705. RIO GRANDE AT FORT QUITMA

LOCATION. At gaging station on the

the American Dam at El Paso.

DRAINAGE AREA. 32,035 square miles

RECORDS AVAILABLE. Chemical analyst

REMARKS. Chemical analyses by U.S.

conductance of daily samples and

Water Bulletin Numbers 34 and 35,

rectified channel of the Rio Grande, 1.5 miles downstrea

(United States and Mexico; from International Boundary a

s: 1933 to 1965.

Department of Agriculture, Agricultural Research Service

records of discharge for water year October 1964 to Sept

No flow on many days during water year.

Chemical analyses, water year October 

Month

May, 1965. . . .

September. . . .

ber 

of

samples

3 

4 

2 

2

Runoff 

(acrefeet)

904 

559 

129 

65

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

3.79 

3.94 

2.99 

4.14

Magnesium 

(Mg)

0.90 

.76 

.44 

1.07

Sodium 

(Na)

1.52 

1.44 

1.26 

1.65

Potassium 

(K)

Bicarbonate

(Hccg

4.61 

4.80 

3.80 

5.39

Carbonate

(C03)

0.00 

.00 

.00 

.00

Sulfate 

(S04 )

0.87 

1.06 

.62 

1. 29

Chloride

(Cl)

0.82 

.34 

.31 

.34
RIO GRANDE BASIN Continued 

8-3715. RIO GRANDE ABOVE RIO CONCHOS, NEAR 

LOCATION. At gaging station, 7.8 river miles above the junction of the Rio Conchos, about 10 

Chihuahua, and 285.7 river miles below the American Dam at El Paso, Tex.

DRAINAGE AREA. 34,988 square miles (United States and Mexico; from International Boundary an

RECORDS AVAILABLE. Chemical analyses: 1935 to 1965. 

REMARKS. Chemical analyses by U.S. Department of Agriculture, Agricultural Research Service, 

specific conductance of daily samples and records of discharge for water year October 1964 

Commission Water Bulletin Numbers 34 and 35. Records prior to 1964 were published under t

days during water year.

Chemical analyses, water year October 1964 

Month

August, 1965. 

September. . . .

Number 

of

pies

4 

5

Runoff 

(acrefeet)

283 

2,071

Silica 

(SiOa) 

ppm

Equivalents per million

Calcium

(Ca)

Magnesium

(Mg)

4.8 

4.4

Sodium

(Na)

2.22 

2.39

Potassium 

(K)

Bicarbonate 

(HCOj)

2.25 

2.25

Carbonate 

(CO,)

Sulfate

(S0«)

Chloride

(Cl)

0.54 

.59

F
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RIO GRANDE BASIN--Continued

8-4590. RIO GRANDE AT LAREDO, T

LOCATION. At gaging station, 0.9 mile downstream from the highway bridge between Laredo, Texa

American Dam at El Paso.

DRAINAGE AREA. 135,976 square miles (United States and Mexico; from International Boundary an

RECORDS AVAILABLE. Chemical analyses: July 1955 to September 1965. 

REMARKS. Chemical analyses by U.S. Department of Agriculture, Agricultural Research Service, 

specific conductance of daily samples and records of discharge for water year October 1964 

Commission Water Bulletin Numbers 34 and 35.

Chemical analyses, water year October 1964 t

Month

October 1964

November.

December. . . .

January 1965

February. . .

June ...

July.... ....

September. . .

Total or 

weighted

average

samples

31

30

31

31

28

31

30

31

30

(acrefeet)

365,851

177,917

140,807

134,658

116,628

103,299

365,355

73,170

102,069

141,025

2,093,870

(Si02) 

ppm

__

_

15

__

..

Calcium

(Ca)

4

5

5

3.34

4

5

5

3

4

4

4

Equivalents per million

Magnesium 

(Mg)

82

34

46

1.65

80

54

70

96

.99

60

68

68

Sodium 

(Na)

2.87

4 00

4 44

4.48

4.79

5.39

2.22

4.57

3.78

3.48

3.48

Potassium 

(K)

__

 _

__

0.11

_

___

.14

--

_

Bicarbonate 

(HCOj)

2.85

2.80

2.80

2.39

2.10

2.66

2.72

2.61

2.66

2.66

2.62

Carbonate 

(C03)

0 00

.00

00

.00

.00

.00

.00

.00

.00

.00

0.00

Sulfate 

(S04 )

__

_^

4.10

_

 -

3.58

--

Chloride 

(Cl)

2.14

2 96

3.19

3 16

3.41

3.84

4.34

1.78

3 58

2.85

1.81

2.55

F
RIO GRANDE BASIN Continu

8-4613. RIO GRANDE BELOW FALCON 

LOCATION. U.S. tailrace at Falcon Dam.

DRAINAGE AREA. 164,482 square miles (United States and Mexico; from International Boundary 

RECORDS AVAILABLE. Chemical analyses: July 1955 to September 1965.

REMARKS. Chemical analyses by U.S. Department of Agricultural Research Service, U.S. Salini

samples and records of discharge for water year October 1964 to September 1965 given in I

34 and 35.

Chemical analyses, water year October 1964 

Month

October, 1964

December. ....

January, 1965

February .....

May. .........

September. . . .

Total or

weighted

average

of 

samples

12

11

13

11

12

10

(acrefeet)

136,502

111,907

412,582

140,509

142,215

2,530,571

(Si02) 

ppm

_

_ 

_

6.0

_

_

_

-_

Equivalents per million

Calcium 

(Ca)

2.54

2.59

2.79

2.84

2.99

3,09

3.04

2.99

2.79

2.79

2.93

Magnesium 

(Mg)

0.80

.80

.76

.90

.81

.79

.99

1.07

1.07

.99

1.07

1.07

0.96

Sodium

(Na)

2.48

2.22

2.26

2.22

2.26

2.39

2.57

2.87

3.00

3.05

3.05

2.63

Potassium

(K)

_

__

_

0.14

_

__

_

--

Bicarbonate 

(HC03)

2.00

2.10

2.25

2.39

2.41

2.51

2.56

2.44

2.25

2.25

2.20

2.36

Carbonate 

(CO,)

0.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

0.00

Sulfate

(S04 )

2.25

2.10

2.04

2.12

2. 12

2.19

2.52

2.50

2.73

2.71

2.60

2.66

2.41

Chloride 

(Cl)

1.64

1.50

1.50

1.61

1.61

1.64

1.81

2.06

2.20

2.14

2.20

2.26

1.87
RIO GRANDE BASIN Continu

8-3845. PECOS RIVER BELOW ALAMOGORDO 

LOCATION. At gaging station, 1,200 ±eet downstream from Alamogordo Dam, 1.5 miles downstream 

De Baca County.

DRAINAGE AREA. 4,390 square miles, approximately (contributing area). 

RECORDS AVAILABLE. Chemical analyses: June 1937 to September 1965.

Water temperatures: June 1959 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 3,050 micromhos Apr. 19-22; minimum 

Percent sodium: Maximum, 12 Dec. 1 to Mar. 31, May 5 to June 30; minimum, 8 Aug. 1-2.

Sodium-adsorption-ratio: Maximum, 1.08 Feb. 1-28; minimum, 0.40 Aug. 1-2. 

EXTREMES, 1937-65. Specific conductance: Maximum daily, 3,200 micromhos Jan. 14, 1948; mini

Percent sodium: Maximum, 19 July 1, 3-10, 1947; minimum, 1 Feb. 21-28, 1950.

Sodium-adsorption-ratio (1961-65): Maximum, 1.08 Feb. 1-28, 1965; minimum, 0.40 Aug. 27, 1

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potas

Chemical analyses, water year October 1964 to 

Date

of 

collection

Oct. 1-31, 1964

Jan. 1-31, 1965

July 12-28.....

Aug. 13-31.....

Total or 

weighted 

average

Runoff 

(acrefeet)

4,544 

48 

18 

25 

22 

30,990

4,403 

651 

1,392 

1,872 

25,825 

18,387 

379

3,355 

581 

343 

972 

3,769 

1,172 

3,537

102,285

Silica

(Si02) 

ppm

16 

17 

16 

16 

18 

18

16 

14 

14 

12 

12 

12 

13

14 

14 

24 

13 

12 

12 

13

14

Equivalents per million

Calcium 

(Ca)

24.45 

24.00 

23.50 

23.10 

23.45 

26.65

28.84 

23.10 

19.21 

12.67 

10.63 

9.68 

12.57

14.77 

17.47 

7.78 

11.83 

9.28 

8.98 

11.33

17.16

Magnesium

(Mg)

4.36 

5.18 

5.26 

5.68 

5.76 

5.92

6.17 

4.94 

4.03 

2.47 

2.14 

1.89 

2.47

2.63 

3.54 

1.65 

2.47 

1.48 

1.65 

2.30

3.54

Sodium

(Na)

3.22 

3.74 

3.87 

4.00 

4.13 

4.31

4.48 

3.57 

3.05 

2.09 

1.70 

1.44 

1.87

2.18 

2.61 

.87 

1.74 

1.22 

1.22 

1.44

2.65

Potassium 

(K)

Bicarbonate

(Hccg

2.02 

2.16 

2.39 

2.49 

2.52 

2.46

2.23 

1.97 

1.93 

1.87 

1.97 

2.02 

2.18

2.08 

2.08 

6.26 

2.07 

1.97 

1.97 

2.07

2.16

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate 

(S04 )

27.27 

27.69 

27.27 

27.07 

27.27 

30.81

33.10 

26.44 

22.07 

13.87 

11.53 

10.08 

13.45

15.86 

19.36 

3.54 

12.76 

9.20 

9.04 

11.93

19.11

Chloride

(CD

2.71 

3.05 

3.13 

3.24 

3.33 

3.67

3.98 

3.13 

2.65 

1.64 

1.30 

1.07 

1.47

1.72 

2.17 

.65 

1.35 

.87 

.85 

1.10

2.17

F
RIO GRANDE BASIN Continued 

8-3965. PECOS RIVER NEAR ARTESIA, 

LOCATION. At gaging station at bridge on State Highway 83, 4.3 miles east of Artesia, Eddy Co

and 17 miles north of McMillan Dam.

DRAINAGE AREA. 15,300 square miles, approximately (contributing area). 

RECORDS AVAILABLE. Chemical analyses: July 1937 to September 1965.

Water temperatures: April 1949 to September 1965.

Sediment Records: January 1949 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 21,500 micromhos June 24; minimum da

Percent sodium: Maximum, 68 June 24; minimum, 16 June 28-30.

Sodium-adsorption-ratio: Maximum, 27.00 June 24; minimum 0.72 July 29. 

EXTREMES, 1937-65. Specific conductance: Maximum daily, 22,600 micromhos June 23, 1959; mini

Percent sodium: Maximum, 71 May 16, 1950; minimum, 12 Mar. 25-31, 1951.

Sodium-adsorption-ratio (1961-65): Maximum, 27.00 June 24, 1965; minimum, 0.72 July 29, 196

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potass

are multiplied by density when computing loads. No flow Oct. 5, 12, 13.

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-2, 1964..

Oct. 6-11, 14...

Nov. 24-26......

Runoff

(acrefeet)

4 

4 

14 

4 

8

8 

4 

24 

18 

30

22 

564 

407 

665 

254

Silica 

(Si02 ) 

ppm

19 

13 

12 

17 

2.0

17 

19 

15 

15 

10

8.1 

8.1 

17 

11 

14

Equivalents per million

Calcium

(Ca)

17.27 

22.36 

25.85 

19.51 

17.86

24.95 

29.29 

32.24 

29.34 

36.28

34.73 

33.33 

24.85 

18.61 

18.96

Magnesium

(Mg)

8.31 

14.48 

17.19 

12.67 

10.78

18.67 

22.95 

24.76 

21.63 

28.71

26.24 

24.10 

8.97 

6.00 

8.06

Sodium

(Na)

32.54 

46.11 

60.03 

53.07 

38.89

48.72 

65.25 

106.14 

77.43 

115.71

95.70 

79.61 

17.88 

12.9 

22.05

Potassium 

(K)

Bicarbonate 

(HCOj)

1.54 

.75 

.87 

1.54 

2.90

2.57 

2.74 

2.51 

2.61 

2.15

2.15 

2.47 

2.69 

2.29 

2.49

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate

(S04 )

25.61 

37.68 

44.35 

31.65 

26.86

43.31 

51.63 

50.18 

46.64 

57.05

53.51 

49.97 

33.10 

22. 9 

23.73

Chloride

(CD

30.47 

43.73 

56.70 

51.34 

37.24

45.98 

62.63 

110.87 

78.71 

120.17

102.68 

82.94 

15.37 

12.3 

22.85

F

r
Nov. 27-30, 1964

Jan. 1-31, 1965.

June 4-5........

June 13-15......

286

2,127

502

426

63

61

212

249

240

18

11

17

19

15

13

13

12

23.55 

28.94

28.69

32.29

33.73

38.77

35.58

38.27

25.35

26.85

20.86

29 84

13.97

12.42

19.33

21.55

6.50

7.24

12.26

19.00

21.80

21.55

9.05

11.93

8.31

8.47

33.06 

42.63

53.94 

58.73

64.82

7.87

7.48

14.49

26.97

43.41

63.51

64.82

87.00

23.49

36.02

8.87

21.75

19.14

"

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

3.21

2.10 

2.72

2.67

2.46

2.07

2.79

2.52

2.97

1.48

1.18

1.80

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

30.61 

37.68

41.22 

42.89

46.43

34.98

36.02

43.31

48.72

52.26

54.96

52.88

32.69

36.23

26.65

26.23

17.57

34.98 

46.55

59.24 

66.29

72.22

7.90

7.90

15.80

27.65

46.55

68.83

66.29

90.55

27.65

23.70

37.80

11.28

22.71

20.88
RIO GRANDE BASIN Continue

8-3965. PECOS RIVER NEAR ARTESIA, N. M

Chemical analyses, water year October 1964 to Se

Date 

of 

collection

June 16-20, 1965

June 24.........

Aug. 23.........

Total or 

weighted 

average

Runoff 

(acrefeet)

63 

34 

71 

678 

2,705

4,177 

6,046 

2,122 

10,425 

210

91 

67 

40 

2,797 

5,970

5,177 

5,736 

435 

161 

139

127 

274 

16 

621 

1,971 

34

85,928

Silica 

(Si02) 

ppm

7.7 

6.6 

10 

17 

16

18 

15 

16 

15 

15

16 

15 

15

7 

12

13 

15 

15 

16 

16

16 

15 

18 

14 

14 

16

14

Equivalents per million

Calcium

(Ca)

19.96 

24.45 

44.06 

17.56 

18.51

14.17 

14.47 

17.66 

14.27 

15.17

16.97 

20.36 

24.15 

5.69 

7.68

15.97 

12.97 

15.27 

18.46 

22.70

35.88 

24.20 

27.30 

20.56 

17.27 

26.45

20.47

Magnesium 

(Mg)

11.43 

15.55 

33.32 

8.06 

4.85

3.21 

2.80 

3.54 

2.55 

3.62

4.44 

6.83 

8.64 

.51 

1.23

1.81 

3.45 

5.35 

7.98 

11.27

21.14 

10.20 

12.34 

11.27 

6.75 

13.57

6.17

Sodium

(Na)

38.45 

57.86 

167.91 

29.15 

6.83

3.39 

3.48 

5.13 

3.70 

7.79

11.96 

20.27 

28.32 

1.26 

2.35

5.13 

6.96 

15.05 

22.62 

38.54

100.92 

32.19 

47.42 

36.54 

16.70 

49.59

13.31

Potassium 

(K)

Bicarbonate 

(HCOj)

1.97 

1.98 

2.08 

3.15 

2.49

2.82 

2.23 

2.43 

2.16 

1.70

1.74 

1.70 

1.57 

1.38 

1.77

2.16 

2.16 

1.97 

2.20 

2.52

2.74 

2.08 

2.46 

2.43 

1.93 

2.49

2.28

Carbonate 

(CO,)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate 

(SO,)

27.07 

35.60 

63.50 

21.03 

21.24

15.03 

15.62 

19.40 

15.20 

17.18

19.82 

24.57 

30.40 

5.04 

7.37

16.66 

13.82 

18.20 

23.32 

29.98

48.30 

31.23 

36.64 

27.48 

21.03 

34.77

23.73

Chloride 

(Cl)

40.34 

57.55 

181.95 

29.62 

5.87

2.88 

2.91 

4.34 

3.13 

7.59

11.74 

20.45 

28.77 

1.04 

2.03

4.23 

7.76 

14.67 

22.43 

37.52

104.09 

31.60 

45.98 

36.67 

16.78 

52.47

13.74

F
RIO GRAKDE BASIN Continued 

8-4101. PECOS RIVER BELOW RED BLUFF DAM, N

LOCATION. Just below dam, 3 miles upstream from Salt (Screwbean) Draw, 5 miles northwest of Or

near Orla.

DRAINAGE AREA. 20,720 square miles, approximately (contributing area). 

RECORDS AVAILABLE. Chemical analyses: July 1937 to September 1965.

Water temperatures: March 1953 to September 1965.

EXTREMES, 1964-65. Specific conductance: Maximum daily, 23,500 micromhos May 28; minimum dai

Percent sodium: Maximum, 73 May 1 to June 30; minimum, 66 Oct. 1-31. 

Sodium-adsorption-ratio: Maximum, 30.83 May 1-31; minimum, 19.92 Oct. 1-31.

EXTREMES, 1937-65. Specific conductance: Maximum daily, 24,200 micromhos Sept. 28, 30, 1953; 

Percent sodium: Maximum, 78 Oct. 4-8, 1954; minimum, 9 Aug. 17-19, 1944.

Sodium-adsorption-ratio (1961-65): Maximum, 31.50 Sept. 20-30, 1964; minimum, 15.15 Feb. 1-

REMARKS. Where no potassium (K) is reported, sodium and potassium are calculated as sodium (N

Orla. Mean discharge values have been adjusted to exclude inflow from Salt (Screwbean) Dra

station. No flow July 7-15, Aug. 11-31, Sept. 1-21.

Chemical analyses, water year October 1964 to 

Date

of 

collection

Oct. -31, 1964.

Jan. -31, 1965.

Mar. 1-31.......

July 1-6, 16-31.

Sept. 22-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

166 

173 

191 

49 

28 

49

60 

74 

244 

2,714 

14 

716 

1,514

5,992

(Si02) 

ppm

14 

7.7 

6.4 

5.9 

3.6 

1.9

1.7 

3.1 

1.1 

6.9 

3.5 

13 

12

8.7

Equivalents per million

Calcium 

(Ca)

29.74 

30.74 

32.68 

31.74 

35.18 

34.18

35.13 

38.02 

38. 19 

37.57 

36.58 

34.63 

27.35

33.98

Magnesium 

(Mg)

18.10 

24.02 

21.31 

21.88 

20.81 

24.60

25.25 

26.98 

96.08 

25.01 

23.61 

23.36 

17.27

22.54

Sodium

(Na)

97.44 

133.11 

136.16 

124.85 

147.47 

149.21

152.25 

175.74

171.S3

163.13 

156.17 

152.69 

111.36

145.14

Potassium 

(K)

1.71 

2.17

2.48 

2.51

-

Bicarbonate 

(HCOJ

.44 

.70 

.62 

.66 

.66 

.59

.67 

.75 

.00 

2.20 

2.08 

3.00 

2.79

2.36

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate 

(S04 )

43.51 

48.93 

49.76 

48.93 

50.38 

52.26

56.63 

58.71 

59.13 

55.59 

53.30 

50.80 

38.10

49.97

Chloride 

(Cl)

104.38 

137.38 

138.51 

133.15 

151.21 

154.03

159.39 

180.26 

174.90 

167.85 

162.21 

156.85 

115.10

149 . 50

Fl

ri

(
RIO GRANDE BASIN--Continued

8-4474. PECOS RIVER NEAR SHUMLA, 

LOCATION. At gaging station, 13.0 river miles upstream from the Pecos High Bridge, and 18.5 

confluence is 638.2 river miles below the American Dam at El Paso.

DRAINAGE AREA. 35,162 square miles (from International Boundary and Water Commission Water Bu

RECORDS AVAILABLE.--Chemical analyses: October 1954 to September 1965. 

REMARKS. Chemical analyses by U.S. Department of Agriculture, Agricultural Research Service, 

specific conductance of daily samples and records of discharge for water year October 1964 

Water Commission Water Bulletin Numbers 34 and 35.

Chemical analyses, water year October 1964 to 

Month

October 1964

November ....

December ....

January 1965

February. . . .

April. ......

May. ........

August

September. . .

Total or

weighted

average

Numof 

samples

3

4

5

4

4

5

5

4

(acrefeet)

30,621

15,471

13,958

12,113

10,385

39,749

9,818

209,528

(S102 ) 

ppm

_

__

6.0

_

_

--

Equivalents per million

Calcium

(Ca)

5.84

5.99

6.19

6.59

6.79

7.88

4.74

5.19

5.74

5.70

Magnesium

(Mg)

3.45

4.03

4.44

4.52

5.02

3.87

4.20

3.71

Sodium

(Na)

11.18

13.14

14. 14

14.92

17.23

9.70

13.44

15.40

12.84

Potassium 

(K)

_

0.16

_

_

Bicarbonate 

(HCOj)

3.34

:i.20

3. 25

3.29

3.20

2.56

2.91

Carbonate

(C03)

0.00

.00

.00

.00

.00

.00

0.00

Sulfate 

(S04 )

5.50

6.10

6.39

6.75

7 37

5.89

6.35

5.68

Chloride

(Cl)

11.90

13.96

15.23

16.25

18.31

14.56

16.76

13.81

F

r

0
PART 9. COLORADO RIVER BASI

COLORADO RIVER MAIN STEM 

9-711. COLORADO RIVER NEAR GLENWOOD SP

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

DRAINAGE AREA. 4,560 square miles, approximately, upstream from gaging station. 

RECORDS AVAILABLE. Chemical analyses: October 1941 to September 1965.

Water temperatures: May 1949 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,100 micromhos Dec. 31; minimum da

Percent sodium: Maximum, 50 Feb. 1-28; minimum, 2 Oct. 17.

Sodium-adsorption-ratio: Maximum, 4.06 Dec. 29-31; minimum, 0.05 Oct. 17. 

EXTREMES, 1941-65. Specific conductance: Maximum daily, 2,260 micromhos Aug. 10, 1947; mini

Percent sodium (1941-65): Maximum, 53 Dec. 11-20, 1954; minimum, 2 Oct. 17, 1964.

Sodium-adsorption-ratio (1961-65): Maximum, 4.06 Dec. 29-31, 1964; minimum, 0.05 Oct. 17, 

REMARKS. Where no potassium (K) is reported, sodium (Na) and potassium (K) are calculated an

for more comprehensive definition of water quality at this station. Minimum observed duri

are given for Colorado River at Glenwood Springs, Colo.

Chemical analyses, water year October 1964 t

Date 

of 

collection

Oct. 1-16, 1964.

Oct. 18-31......

Dec. 29-31......

Jan. 1-31, 1935. 

Feb. 1-39.......

Apr. 1-22.......

Runoff 

(acrefeet)

38,241 

1,983 

24,659 

1,575 

47,972

46,318 

4,195 

51,465 

43,709 

48,944

68,422 

35,322 

118,318 

144,345 

446.459

Silica

(sicg

ppm

Equivalents per million

Calcium

(Ca)

4 

4 

4 

3 

4

4 

5 

4 

4 

4

4 

3 

2 

2 

2

Magnesium

(Mg)

06 

16 

84 

60 

92

62 

04 

40 

44 

40

20 

50 

86 

50 

46

Sodium

(Na)

3.39 

.08 

3.74 

.19 

3.96

4.00 

6.44 

4.26 

-1.52 

4.18

2.48 

1.70 

1.22 

.78 

.48

Potassium 

(K)

Bicarbonate

2.31 

3.93 

2.56 

3.47 

2.57

2.47 

2.62 

2.38 

2. -13 

2.33

2.25 

2.10 

2.02 

1.88 

1.69

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.99 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

2.10 

.20 

2.56 

.27 

2.79

2.54 

3.21 

2.48 

2.42 

2.42

2.29 

1.67 

1.15 

.85 

.85

Chloride

(CD

3.05 

.11 

3.44 

.05 

3.53

3.61 

5.64 

3.81 

4.09 

3.81

2.14 

1.41 

.90 

.56 

.39

F
COLORADO RIVER MAIN STEM Continu

9-711. COLORADO RIVER NEAR GLENWOOD SPRINGS, 

Chemical analyses, water year October 1964 to Septe

Date 

of 

collection

July 1-31, 1965.

Aug. 20-25......

Sept. 1-30......

Total or 

weighted 

average

Runoff 

(acrefeet)

271,283 

70,084 

44,350 

34,334 

23,266 

95,385

1,660,628

Silica 

(Si02) 

ppm

Equivalents per million

Cal- Magnecium sium

(Ca) (Mg)

2.76 

2.84 

3.76 

3.08 

3.52 

3.94

3.18

Sodium

(Na)

1.00 

1.22 

2.18 

1.48 

2.44 

2.26

1.64

Potassium 

(K)

Bicarbonate 

(HCOj)

1.70 

1.80 

2.07 

1.88 

1.97 

2.10

1.95

Carbonate 

(COJ

0.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate 

(S04 )

1.29 

1.31 

1.96 

1.52 

1.83 

2.06

1.47

Chloride

(Cl)

0.76 

.93 

1.89 

1.16 

2.14 

2.03

1.40

F
COLORADO RIVER MAIN STEM Con

9-1805. COLORADO RIVER NEAR CISCO

LOCATION. At gaging station, 1 mile downstream from Dolores River, 11 miles south of Cisco, G

line, 97 miles upstream from 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 1965.

Water temperatures: May 1949 to September 1959, October 1964 to September 1965.

Sediment records: May 1930 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 2,080 micromhos Mar. 8; mi

Percent sodium: Maximum, 58 Sept. 14-19; minimum, 16 Apr. 19-22.

Sodium-adsorption-ratio: Maximum, 5.49 Sept. 14-19; minimum, 0.67 Apr. 19-22. 

EXTREMES, 1941-65. Specific conductance: Maximum daily, 4,820 micromhos Dec. 13, 1957; minim

Percent sodium: Maximum, 68 Mar. 26-28, 1964; minimum, 16 Apr. 19-22, 1965.

Sodium-adsorption-ratio (1961-65): Maximum, 9.28 Mar. 26-28, 1964; minimum, 0.63 May 1-17, 

REMARKS. Additional samples were collected to further define the quality of water at this sta

Chemical analyses, water year October 1964 to 

dai

Date 

of 

collection

Oct. 1-31, 1964.

Jan. 1-31, 1965.

May 13-20.......

Runoff 

(acrefeet)

163,496 

181,904 

118,560 

62 , 694 

161,774

140,565 

71 , 643 

82 , 608 

43,299 

131,556

103,458 

284,033 

173,911 

283,716 

263.564

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

7.58 

6.99 

6.74 

5.54 

4.54

5.14 

6.79 

5.59 

5.09 

4.19

2.99 

2.40 

3.19 

2.64 

2.94

Magnesium 

(Mg)

5.59 

5.18 

4.61 

3.54 

5.18

4.52 

2.63 

2.80 

3.29 

2.96

3.62 

1.07 

.70 

.58 

.82

Sodium 

(Na)

5.87 

6.39 

7.31 

6.74 

8.57

9.66 

10.14 

8.96 

6.66 

4.44

.22 

.44 

.35 

.26 

.48

Potassium 

(K)

Bicarbonate 

(HC03)

3.61 

3.74 

3.70 

3.28 

3.47

3.28 

3.31 

3.20 

3.18 

2.85

2.74 

1.97 

2.69 

2.23 

2.20

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

10.26 

9.35 

9.60 

7.89 

9.24

9.12 

8.58 

7.95 

7.56 

5.77

3.31 

2.19 

1.89 

1.69 

2.33

Chloride 

(Cl)

5.08 

5.36 

5.22 

4.51 

5.42

6.77 

7.48 

6.07 

4.23 

2.93

1.75 

.73 

.62 

.56 

.73

Fl

ri

(
COLORADO RIVER MAIN STEM Contin

9-1805. COLORADO RIVER NEAR CISCO, UTAH

Chemical analyses, water year October 1964 to Sept

Date 

of 

collection

May 21-27, 1965.

Sept. 20-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

415,696 

134,717 

1,654,215 

621,223 

294,545 

200,767

206,360 

110,598 

129,767 

142,385 

63,967 

162,764

6,403,784

Silica 

(Si02) 

ppm

Equivalents per million

Calcium

(Ca)

2.54 

2.94 

2.54 

2.79 

3.74 

4.74

2.54 

4.49 

3.14 

5.84 

5.19 

6.19

3.58

Magnesium 

(Mg)

0.60 

1.07 

.99 

.99 

1.40 

.76

3.21 

4.36 

4.44 

3.37 

2.96 

3.13

1.89

Sodium 

(Na)

1.00 

1.74 

.91 

1.26 

1.57 

3.18

2.57 

6.48 

4.18 

5.74 

11.09 

4.61

2.83

Potassium 

(K)

Bicarbonate 

(HCCg

2.02 

2.15 

2.08 

2.10 

2.56 

2.59

2.64 

2.79 

2.70 

2.70 

2.54 

2.98

2.47

Carbonate 

(C0 3)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate 

(S04 )

1.64 

2.83 

1.81 

2.23 

3.14 

4.39

4.27 

7.58 

6.60 

9.29 

7.20 

8.22

3.98

Chloride

(Cl)

0.48 

.73 

.54 

.71 

.99 

1.64

1.41 

4.88 

2.43 

2.91 

9.45 

2.20

1.83

F

r
COLORADO RIVER MAIN STEM

9-3800. COLORADO RIVER AT LEES FER

LOCATION. At gaging station at head of Marble Gorge at Lees Ferry, Coconino County, just ups

28 miles downstream from Utah-Arizona State line, 61.5 miles upstream from Little Colorado 

DRAINAGE AREA. 107,900 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: January to July 1926, October 1926 to June 1927, Octo

October 1947 to September 1965.

Water temperatures: July 1949 to September 1965.

Sediment records: October 1928 to September 1933, November 1942 to September 1944, October 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,160 micromhos Feb. 10, Apr. 11, 2

Percent sodium: Maximum, 39, Nov. 19 to Dec. 31, Feb. 1 to Mar. 31; minimum, 30 July 8 to 

Sodium-adsorption-ratio: Maximum, 2.39 Feb. 1-28; minimum, 1.12 Aug. 1 to Sept. 30. 

EXTREMES, 1942-45, 1947-65. Specific conductance: Maximum daily, 2,430 micromhos Oct. 15, 1

Percent sodium: Maximum, 46 Mar. 2, 4, 7, 10, 1944; minimum, 17 June 1-11, 1958.

Sodium-adsorption-ratio (1961-65): Maximum, 3.80 June 1-30, 1964; minimum, 0.70 May 13-17, 

REMARKS, Values reported for sodium (Na) are determined by analysis and do not include potas

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-31, 1964.

Jan. 1-31, 1965.

Mar. 1-31.......

Sept. 1-30..... .

Total or 

weighted 

average

Runoff 

(acrefeet)

268,516 

90,845 

110,035 

146,618 

397,579 

558,246

514,608 

556,155 

1,222,215 

1,772,985 

112,264 

398,122

2,244,436 

79,140 

201,183 

526,017 

870,664 

750,347

10,819,975

Silica 

(Si02) 

ppm

10

11

11 

12

~

Equivalents per million

Calcium 

(Ca)

3.09 

3.09 

3.79 

4.34 

4.39 

4.79

4.99 

4.89 

5.14 

4.69 

2.79 

4.59

4.24 

2.84 

2.99 

2.40 

2.30 

2.30

4.04

Magnesium

(Mg)

1.56 

1.56 

2.14 

2.39 

2.47 

1.97

2.06 

2.14 

2.30 

2.47 

1.40 

2.22

2.06 

1.32 

1.48 

1.23 

.99 

.99

1.97

Sodium

(Na)

2.57 

2.61 

3.65 

4.26 

.35 

.22

.48 

.44 

.26 

.00 

.87 

.13

.83 

.83 

.48 

.57 

.44 

.44

3.44

Potassium 

(K)

0.09 

.14

.13 

.06

-

Bicarbonate 

(HC03)

2.13 

2.36 

2.56 

2.69 

2.69 

2.69

2.75 

2.75 

2.95 

2.95 

2.29

2.85 

2.33 

2.39 

2.13 

1.97 

1.97

2.R4

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate

(SCU)

3.71 

3.79 

5.29 

6.29 

6.37 

6.33

6.64 

6.64 

6.85 

6.54 

3.21 

6.25

5.64 

3.21 

3.58 

2.46 

2.25 

2.31

5.31

Chloride

(Cl)

1.21 

1.24 

1.75 

2.06 

2.14 

2.09

2.14 

2.03 

2.03 

1.95 

.82 

1.36

1.78 

.82 

.96 

.56 

.51 

.51

1.61

F

r
COLORADO RIVER MAIN STEM 

9-4025. COLORADO RIVER NEAR GRAND CA

LOCATION. At gaging station in Grand Canyon National Park at Kaibab Bridge, 0.2 mile upstrea

Coconino County, 26 miles downstream from Little Colorado River, and 267 miles upstream fr

DRAINAGE AREA. 137,800 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: August 1925 to November 1942, September 1943 to Septe

Water temperatures: October 1936 to October 1942, September 1943 to September 1965.

Sediment records: October 1925 to November 1942, September 1943 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,320 micromhos Mar. 22; minimum da

Percent sodium: Maximum, 44 Oct. 1-31; minimum, 23 Aug. 7-31.

Sodium-adsorption-ratio: Maximum, 3.19 July 31; minimum, 1.59 Aug. 7-31. 

EXTREMES, 1925-42, 1943-65. Specific conductance (1937-42, 1943-65): Maximum daily, 2,900 m

Percent sodium (1941-42, 1943-65): Maximum, 61 Aug. 3-9, Sept. 12, 1964; minimum, 16 June 

Sodium-adsorption-ratio (1961-65): Maximum, 6.12 July 28, 1964; minimum, 0.87 July 1-6, 19

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-31, 1964.

Dec. 17-31. .....

Jan. 1-9, 1965. . 

Jan. 10-13. .

Jan. 14-31. ... .

Mar. 1-31. ......

June 29-30. . .

July 10-30. .....

Runoff 

(acrefeet)

298,522 

370,711 

207,328 

205,349 

159,447

98,539 

349,492 

539,322 

567,899 

1,251,372

2,281,805 

2,230,929 

51,174 

245,990 

447.352

Silica

(Si02) 

ppm

12

11 

13

Equivalents per million

Calcium

(Ca)

3.49 

3.94 

3.89 

5.54 

4.89

4.19 

4.94 

5.04 

5.09 

4.99

4.69 

4.19 

2.94 

3.09 

2.89

Magnesium 

(Mg)

1.56 

1.89 

1.97 

2.22 

2.14

1.56 

2.14 

2.06 

2.30 

2.14

2.47 

2.14 

1.48 

1.56 

1.23

Sodium

(Na)

4.13 

4.52 

4 48 

5.18 

5.13

4.92 

5.05 

5.05 

5.22 

4.65

4.44 

3.83 

2.87 

3.09 

2.57

Potassium 

(K)

0.01

.13 

.09

Bicarbonate 

(HCOJ

2.79 

2.82 

2.82 

3.16 

3.06

3.26 

3.13 

2.98 

3.15 

3.15

3.02 

2.88 

2.43 

2.52 

2.59

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(S0 4 )

3.50 

4.56 

4.56 

6.79 

6 31

5.04 

6 25 

6.45 

6.48 

6.37

6.39 

5.73 

3.37 

3 62 

2.62

Chloride

(Cl)

2.82 

2.88 

2.85 

2.88 

2.99

2.60 

2.93 

.28 

3.10 

2.54

2.14 

1.89 

1.58 

1 64 

1.47
July 31, 1965. . . 

Aug. 1-6. .......

Aug. 7-31. ......

Sept. 1-30. .....

Total or 

weighted 

average

30,942 

152,926

725,950

767,008

10,982,057

"

12"

3.19 

2.94

2.54

4.17

.99 

1.07

1.15

1.98

4.61 

2.74

2.26

4.00

"

.08"

3.54 

2.75

2.29

2.88

.00 

.00

.00

.00

0.00

3.16 

2.62

2.44

2.46

5.25

2.12 

1 41

1.24

2.03
COLORADO RIVER MAIN STEM Contin

9-4215. COLORADO RIVER BELOW HOOVER DAM

LOCATION. At Hoover Dam, on 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 1965.

Water temperatures: October 1941 to September 1965. 

REMARKS. Records of specific conductance of individual samples available in district office 

Chemical analyses, water year October 1964 to 

Date

of 

collection

Oct. 5, 15, 26,

1964..........

Nov. 5, 16, 25..

Dec. 4, 15, 23..

Jan. 5, 15, 25,

1965..........

Feb. 5, 15, 25..

Mar. 4, 15, 25..

Apr. 5, 15, 26..

May 5, 17, 25.. .

June 4, 14, 25..

July 6, 15, 26..

Aug. 5, 13, 25..

Sept. 3, 15, 24.

Runoff

(acrefeet)

Silica

(Si02) 

ppm

10.0

9.8

10.0

11.0

11.0

9.6

9.9

9.8

9.2

9.4

9.2

9.0

Equivalents per million

Calcium

(Ca)

4.79

4.84

4.99

5.04

4.99

5.14

5.29

5.34

5.19

4.94

4.99

4.99

Magnesium 

(Mg)

2.22

2.30

2.22

2.30

2.39

2.39

2.30

2.22

2.39

2.55

2.47

2.47

Sodium

(Na)

4.57

4.70

4.79

4.92

4.96

5.18

5.09

5.18

5.05

5.18

5.05

5.00

Potassium 

(K)

0.13

.13

.13

.13

.13

.14

.14

.14

.14

.14

.14

.14

Bicarbonate 

(HCOJ

2.59

2.59

2.46

2.43

2.43

2.49

2.56

2.56

2.57

2.59

2.66

2.72

Carbonate 

(C03)

0.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

Sulfate 

(S04 )

6.31

6.43

6.83

6.93

7.04

7.02

7.20

7.37

7.04

7.12

6.95

6.91

Chloride

(Cl)

2.68

2.74

2.93

2.99

3.05

3.13

3.13

3.16

3.16

3.10

3.05

3.02

F
DIVERSIONS AND RETURN FLOWS AT AND BELOW 

9-5255. YUMA MAIN CANAL BELOW COLORADO RIVER S

LOCATION.--At gaging station on Yuma Main Canal below Colorado River siphon on Arizona side o

0.2 mile downstream from upper highway bridge over Colorado River at Yuma, Yuma County. 

RECORDS AVAILABLE. Chemical analyses: September 1926 to September 1928, October 1942 to Sep

Water temperatures: May 1961 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,590 micromhos Dec. 28; minimum da

Percent sodium: Maximum, 47 Nov. 1 to Dec. 31; minimum, 43 Mar. 1-31, June 1-30.

Sodium-adsorption-ratio: Maximum, 3.57 Dec. 1-31; minimum, 3.01 Mar. 1-31. 

EXTREMES, 1943-65. Specific conductance: Maximum daily, 1,600 micromhos July 7, 1962; minim

Percent sodium: Maximum, 46 Nov. 21-30, 1953, Feb. 1-28, 1962, Jan. 1-31, 1963, Sept. 1-30

and 1957.

Sodium-adsorption-ratio (1961-65): Maximum, 3.57 Dec. 1-31, 1964; minimum, 2.52 July 7, 19

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potas

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-31, 1964

Jan. 1-31, 1965

July 1-31...... 

Aug. 1-31......

Sept. 1-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

27,608 

18,506 

11,129 

12,113 

22,937 

27,300

25,468 

33,511 

33,322 

40,317 

36 , 339 

37,428

326,058

Silica 

(Si02) 

ppm

16 

18 

17 

16 

15 

15

15 

15 

16 

15 

15 

17

16

Equivalents per million

Calcium 

(Ca)

5.19 

5.24 

5.34 

5.19 

5.19 

5.24

4.99 

5.39 

5.34 

5.X4 

5.09 

5.29

5.22

Magnesium 

(Mg)

2.30 

2.55 

2.47 

2.63 

2.47 

2.39

2.30 

2.55 

2.63 

2.88 

2.71 

2.71

2.55

Sodium

(Na)

6.48 

7.00 

7.05 

6.66 

6.35 

5.87

5.79 

6.35 

6.13 

fi.44 

6.53 

6.70

6.40

Potassium 

(K)

0.14 

.13 

.13 

.14 

.14 

.14

.14 

.16 

.16 

.15 

.15 

.14

0.15

Bicarbonate 

(HCO^

2.79 

2.88 

2.98 

2.92 

2.84 

2.79

2.72 

2.79 

2.72 

2.66 

2.66 

2.75

2.76

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate 

(S04 )

7.29 

7.56 

7.62 

7.62 

7.50 

7.39

7.04 

7.58 

7.66 

7.77 

7.77 

7.95

7.58

Chloride

(Cl)

4.03 

4.40 

4.43 

4.26 

4.01 

3.72

3.61 

3.89 

3.89 

3.98 

4.09 

4.29

4.01
GUNNISON RIVER BASIN 

9-1525. GUNNISON RIVER NEAR GRAND JUN

LOCATION. At bridge on State Highway 141, 180 feet downstream from gaging station, 0.4 mile 

and 8 miles southeast of Grand Junction, Mesa County.

DRAINAGE AREA. 7,870 square miles, approximately, upstream from gaging station. 

RECORDS AVAILABLE. Chemical analyses: October 1931 to September 1965.

Water temperatures: April 1949 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 2,020 micromhos Oct. 9; minimum dai

Percent sodium: Maximum, 33 Mar. 1-31, Aug. 27-31; minimum, 17 June 15-30.

Sodium-adsorption-ratio: Maximum, 2.48 Aug. 27-31; minimum, 0.52 June 15-30. 

EXTREMES, 1941-65. Specific conductance: Maximum daily, 2,730 micromhos Sept. 10, 1956; min

Percent sodium (1950-65): Maximum, 39 Apr. 30, 1962; minimum, 10 June 2-5, 10, 1952.

Sodium-adsorption-ratio (1961-65): Maximum, 2.64 Sept. 14-30, 1963; minimum, 0.34 Apr. 17, 

REMARKS. Where no potassium (K) is reported, sodium (Na) and potassium (K) are calculated an

more comprehensive definition of water quality at this station.

Chemical analyses, water year October 1964 t

Date 

of 

collection

Oct. -31, 1964.

Jan. -31, 1965.

July 1-2........

Runoff 

(acrefeet)

53,433 

64,800 

58,967 

54 , 970 

44,763

52,019 

68,011 

35,425 

125,030 

488,678

93 , 029 

63,074 

214,413 

403,676 

35 . 742

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

18. 

15. 

12. 

11. 

9.

9. 

6. 

4. 

3. 

3.

4. 

4. 

3. 

3. 

3.

Magnesium

(Mg)

00 

00 

08 

60 

40

70 

36 

40 

00 

20

32 

20 

68 

12 

28

Sodium

(Na)

5.13 

5.96 

3.31 

4.00 

4.05

4.79 

2.78 

1.39 

1.00 

.78

1.17 

1.00 

.87 

.65 

1.00

Potassium 

(K)

Bicarbonate 

(HCOa)

4.20 

4.10 

3.59 

3.84 

2.33

3.26 

2.72 

2.43 

1.77 

2.00

2.00 

2.07 

1.90 

1.67 

1.69

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate

(SO,)

18.36 

16.34 

11.28 

11.24 

10.70

10.76 

6.27 

3.19 

2.12 

1.94

3.46 

3.02 

2.52 

2.02 

2.52

Chloride

(Cl)

0.59 

.51 

.51 

.54 

.42

.45 

.15 

.15 

.11 

.03

.05 

.11 

.11

.10 

.08

F
July 3-16, 1965.

Sept. 22-30.....

weighted

average

250,528

51,537

2,610,809

3.52

5.00

6.58

9.30

10.16

9.06

5.46

1.00

3.96

1.74

1.80

2.67

3.13

2.28

.00

.00

0.00

2.60

5.77

9.56

4.75

.10

.19

.34

.34

.34

0.17
GREEN RIVER BASIN

9-2345. GREEN RIVER NEAR GREENDAL

mile nstrea Flaming Gorge Dam, LOCATION. At gaging station, 0.5 

13 miles southeast of Linwood.

DRAINAGE AREA. 15,100 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: October 1956 to September 1965.

Water temperatures: October 1956 to September 1959, October 1963 to September 1965.

Sediment records: October 1956 to September 1959. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 962 micromhos Aug. 30;

Percent sodium: Maximum, 38 Aug. 1 to Sept. 30; minimum, 25 Jan. 1-31.

Sodium-adsorption-ratio: Maximum, 2.15 Aug. 1-31; minimum, 1.10 Jan. 1-31. 

EXTREMES, 1956-65.--Specific conductance (1956-58, 1959-65): Maximum daily, 1,340

Percent sodium: Maximum, 53 Mar. 29-31, 1962; minimum, 16 May 8, 1962.

Sodium-adsorption-ratio (1961-65): Maximum, 3.72 Mar. 29-31, 3962; minimu 

REMARKS. Sodium (Na) and potassium (K) values are calculated and reported a:

lies south of D

niniir dai

mhos 

0.60 May 8, 1

sodium.

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-13, 1964.

Jan. 1-31, 1965.

Sept. 1-30......

Total or 

weighted 

average

Runoff 

(acrefeet)

158,822 

139,418 

193,747 

215,576 

213,152 

232,546

203,504 

66,284 

85,626 

29,145 

30,559 

43,676

1,612,055

Silica 

(SiOJ 

ppm

Equivalents per million

Calcium

(Ca)

3.14 

3.04 

3.24 

3.49 

3.34 

5.29

3.74 

3.74 

3.69 

3.74 

3.64 

3.44

3.68

Magnesium

(Mg)

1.97 

1.81 

1.81 

1.73 

2.30 

2.55

2.63 

2.55 

2.88 

2.71 

2.55 

2.55

2.22

Sodium 

(Na)

2.18 

2.26 

1.78 

1.78 

2.87 

3.96

3.44 

3.26 

3.18 

3.57 

3.78 

3.61

2.78

Potassium 

(K)

Bicarbonate 

(HCO3)

3.05 

2.98 

3.15 

3.15 

3.25 

3.31

3.59 

3.13 

3.08 

3.05 

3.02 

2.95

3.20

Carbonate

(CO 3)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate

(SOJ

3.69 

3.62 

3.14 

3.39 

4.68 

7.95

5.52 

5.60 

5.75 

6.02 

5.93 

5.62

4.87

Chloride

(CD

0.56 

.51 

.54 

.48 

.56 

.54

.73 

.79 

.87 

.99 

1.02 

1.04

0.62
GREEN RIVER BASIN Continued 

9-3150. GREEN RIVER AT GREEN RIVER

LOCATION. At bridge on U.S. Highways 50 and 6 in town of Green River, Emery County, and 1 mil

DRAINAGE AREA. 40,600 square miles, approximately, upstream from gaging station. 

RECORDS AVAILABLE. Chemical analyses: August 1928 to September 1965.

Water temperatures: May 1949 to September 1959, October 1964 to September 1965.

Sediment records: May 1930 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,450 micromhos Aug. 21; minimum da

Percent sodium: Maximum, 54 Sept. 1-4; minimum, 23 June 1-11.

Sodium-adsorption-ratio: Maximum, 3.17 Sept. 1-4; minimum, 0.79 June 1-11. 

EXTREMES, 1941-65. Specific conductance: Maximum daily, 2,620 micromhos Aug. 6, 1963; minimu

Percent sodium: Maximum, 54 Sept. 1-4, 1965; minimum, 19 Aug. 7, 1957.

Sodium-adsorption-ratio (1961-65): Maximum, 3.92 Oct. 1-6, 1963; minimum, 0.78 June 1-11, 1

REMARKS. Additional samples were collected to further define the quality of water at this sta

reported as sodium.

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-31, 1964.

Jan. 1-15, 1965.

June 12-19......

Runoff 

(acrefeet)

195,838 

200,231 

266,856 

144,208 

156,044

302 , 789 

361,424 

341 , 891 

176,132 

94,631

223,140 

147,927 

353,058 

315,491 

440.489

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

3.54 

3.54 

3.44 

3.74 

3.54

3.74 

3.84 

3.69 

2.69 

3.14

2.59 

2.64 

2.15 

2.40 

2.99

Magnesium 

(Mg)

2.22 

2.63 

2.47 

2.63 

2.55

2.47 

2.22 

3.13 

2.14 

1.89

1.23 

1.48 

1.07 

1.07 

1.40

Sodium

(Na)

3.13 

3.61 

3.00 

3.26 

3.13

3.74 

4.05 

3.39 

2.61 

2.35

1.83 

2.78 

1.31 

1.04 

t.70

Potassium 

(K)

Bicarbonate 

(HC03)

3.38 

3.54 

3.54 

3.74 

3.57

3.61 

3.44 

3.51 

2.85 

3.39

2.90 

3.05 

2.59 

2.66 

2.98

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

4.54 

5.18 

4.46 

4.89 

4.79

5.43 

5.66 

5.81 

3.98 

3.41

2.35 

3.31 

1.67 

1.52 

2.62

Chloride 

(Cl)

0.99 

1.04 

.90 

.96 

.87

.90 

1.02 

.87 

.59 

.56

.42 

.56 

.31 

.31 

.51

F

r

(
GREEN RIVER BASIN Continued

9-3150. GREEN RIVER AT GREEN RIVER, UTAH 

Chemical analyses, water year October 1964 to Septe

Date 

of 

collection

June 20-30, 1965

Sept. 13-30.....

Total or 

weighted 

average

Runoff

(acrefeet)

450,982 

264,873 

20,033 

89,280 

12,674 

70,631

88,399 

139,025 

73,111 

16 , 007 

16,542 

43,351 

128,886

5,133,943

Silica 

(Si02) 

ppm

Equivalents per million

Calcium

(Ca)

2.25 

2.30 

4.14 

2.79 

6.14 

3.69

3.94 

3.54 

5.29 

2.74 

3.54 

4.24 

2.94

3.11

Magnesium 

(Mg)

1.15 

1.07 

2.22 

1.32 

2.96 

1.81

2.14 

2.39 

3.70 

3.04 

.00 

3.78 

2.80

1.93

Sodium

(Na)

1.13 

1.09 

2.96 

1.57 

3.92 

2.52

3.44 

3.92 

5.52 

4.26 

4.22 

5.26 

4.39

2.59

Potassium 

(K)

Bicarbonate 

(HC03)

2.25 

2.46 

3.02 

2.85 

3.97 

3.26

3.41 

3.36 

4.06 

3.34 

3.69 

3.97 

3.31

3.11

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.13 

.33 

.00 

.00 

.00 

.00 

.23

"

Sulfate

(S04 )

1.92 

1.69 

5.85 

2.31 

8.52 

4.10

5.21 

5.18 

9.18 

5.58 

5.50 

7.81 

5.85

3.83

Chloride

(ci)

0.34 

.31 

.48 

.51 

.56 

.65

.79 

.96 

1.24 

1.13 

1.18 

1.50 

1.21

0.68

F

r
GREEN RIVER BASIN Continue

9-2510. YAMPA RIVER NEAR MAYBELL

LOCATION. At county bridge, 1 mile north of Maybell, Moffat County, and about 3.5 miles down

DRAINAGE AREA. 3,410 square miles, approximately, upstream from gaging station. 

RECORDS AVAILABLE. Chemical analyses: November 1950 to September 1965.

Water temperatures: November 1950 to September 1965,

Sediment records: December 1950 to May 1958. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 613 micromhos Nov. 20, 27, 30; mini

Percent sodium: Maximum, 43 Oct. 1-31; minimum, 9 Apr. 15-18.

Sodium-adsorption-ratio: Maximum, 1.95 Oct. 1-31; minimum, 0.20 Apr. 15-18. 

EXTREMES, 1950-65. Specific conductance: Maximum daily, 947 micromhos Sept. 24, 1955; minim

Percent sodium: Maximum, 47 Dec. 1-18, 1963; minimum, 9 Apr. 15-18, 1965.

Sodium-adsorption-ratio: Maximum, 2.73 Dec. 1-18, 1963; minimum, 0.18 June 1-9, 1964.

REMARKS. Where no potassium (K) is reported, sodium (Na) and potassium (K) are calculated an

for more comprehensive definition of water quality at this station.

Chemical analyses, water year Qctober 1964 

Date 

of 

collection

Oct. -31, 1964

Jan. -31, 1965

Runoff

(acrefeet)

10,576 

13 , 745 

16,786 

16,602 

14,773

17,524 

13,870 

19,841 

19,240 

42 , 446

30,704 

30,165 

51,094 

335,086 

455.088

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

3 

3 

3 

3 

3

3 

4 

2 

2 

2

1 

2

1 

1 

1

Magnesium 

(Mg)

46 

88 

92 

74 

88

84 

30 

70 

20 

24

64 

00 

60 

28 

12

Sodium

(Na)

2.57 

2.35 

2.48 

2.09 

2.35

2.26 

1.31 

.83 

.21 

.70

.41 

.57 

.31 

.30 

.28

Potassium 

(K)

Bicarbonate 

(HCOa)

3.57 

3.61 

3.36 

3.31 

3.34

2.98 

2.75 

1.97 

1.61 

1.77

1.41 

1.61 

1.44 

1.07 

.97

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(SO,)

1.71 

1.92 

2.35 

1.92 

2.19

2.52 

2.73 

1.29 

.73 

1.04

.56 

.83 

.40 

.44 

.35

Chloride 

(Cl)

0.73 

.68 

.68 

.59 

.71

.62 

.13 

.25 

.07 

.12

.09 

.12 

.07 

.07 

.08
GREEN RIVER BASIN Continue

9-2510. YAMPA RIVER NEAR MAYBELL, COLO

Chemical analyses, water year October 1964 to Sep

Date 

of 

collection

July 1-10, 1965

Aug. 8.........

Sept. 1-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

72,159 

38,309 

9,937 

29,597

16,203 

1,648 

3,707 

29,812

1,288,912

Silica 

(Si02) 

ppm

Equivalents per million

Cal- Magnecium slum 

(Ca) (Mg)

0.98 

1.26 

2,00 

2.40

2.28 

.88 

2.78 

2.54

1.60

Sodium

(Na)

0.35 

.52 

.61 

.65

.65 

.33 

.87 

1.09

0.52

Potassium 

(K)

Bicarbonate 

(HCOj)

0.97 

1.18 

1.70 

2.02

1.95 

.79 

2.23 

2.13

1.36

Carbonate 

(C03)

0.00 

.00 

.00 

.00

.00 

.00 

.00 

.00

0.00

Sulfate 

(S04 )

0.29 

.46 

.73 

.87

.77 

.27 

1.15 

1.06

0.62

Chloride

(CD

0.07 

.13 

.16 

.17

.23 

.15 

.28 

.45

0.14
SAN JUAN RIVER BASIN

9-3555. SAN JUAN RIVER NEAR ARCHULETA

LOCATION. At gaging station, 0.5 mile upstream from Gobernador Canyon, 1 mile north of Archul

DRAINAGE AREA. 3,260 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: December 1954 to September 1965.

Water temperatures: December 1954 to September 1965.

Sediment records: December 1954 to September 1965 (discontinued). 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 452 micromhos Mar. 12; minimum dally

Percent sodium: Maximum, 41 Sept. 13-14; minimum, 19 June 23-30.

Sodium-adsorption-ratio: Maximum, 1.15 Sept. 13-14; minimum, 0.38 June 23-30, Sept 30. 

EXTREMES, 1954-65. Specific conductance: Maximum daily, 685 micromhos Jan. 5, 1960; minimum 

Percent sodium: Maximum, 45 Feb. 13-17, 1957; minimum, 13 Apr. 17-23, 1958.

Sodium-adsorption-ratio (1961-65): Maximum, 1.53 Mar. 20, 1962; minimum, 0.30 Apr. 17-23, 1

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-31, 1964.

Jan. 1-31, 1965.

July 7-27.......

Aug. 1-17.......

Runoff 

(acrefeet)

28,284 

20,588 

32,220 

90,387 

92,192 

51 , 834

85,091 

138,347 

3,967 

30,446 

3,451 

64,582

44,588 

68,073 

43,795 

53,316 

4,982 

74.519

Silica 

(Si02) 

ppm

13

13

14

13

Equivalents per million

Calcium 

(Ca)

1.50 

1.65 

1.85 

1.95 

2.05 

2.20

2.15 

1.90 

1.80 

1.45 

1.75 

1.40

1.30 

1.00 

.95 

1.10 

1.05 

1.20

Magnesium 

(Mg)

0.40 

.47 

.51 

.47 

.43 

.58

.69 

.58 

.52 

.43 

.59 

.46

.34 

.28 

.31 

.36 

.27 

.38

Sodium

(Na)

0.78 

1.00 

.96 

.96 

1.00 

1.35

1.17 

.87 

.74 

.52 

.78 

.52

.42 

.30 

.32 

.70 

.52 

.48

Potassium 

(K)

0.06

.07

.04

--

.05

Bicarbonate 

(HCOJ

1.61 

1.77 

1.87

2.07

2.07 

1.80

1 48

i!n

1.21

1.28

Carbonate 

(C03)

0.00 

.00 

.00

.00

.00 

.00

.00

.00

.00

Sulfate 

(S04 )

1.00

1.87

.52

-

.73

Chloride

(CD

0.10

.11

.12

.17

.03

.06

Fl

ri

(

0
SAN JUAN RIVER BASIN Continued

9-3555. SAN JUAN RIVER NEAR ARCHULETA, N. MEX

Chemical analyses, water year October 1964 to Septem

Date 

of 

collection

Aug. 18-31, 1965

Sept. 13-14.....

Total or 

weighted 

average

Runoff 

(acrefeet)

61,646 

52 , 364 

3,237 

19,517 

34,631 

2,579

1,104,636

Silica 

(SI02) 

ppm

-

--

_

--

Equivalents per million

Calcium

(Ca)

1.05 

1.10 

1.10 

.95 

1.00 

.90

1.55

Magnesium 

(Mg)

0.31 

.30 

.30 

.29 

.24 

.26

0.44

Sodium

(Na)

0.39 

.40 

.96 

.37 

.65 

.29

0.74

Potassium 

(K)

Bicarbonate 

(HCCg

1.10 

1.10

1.02

1.57

Carbonate 

(C03)

.00 

.00

.00

0.00

Sulfate

(S04 )

_-

Chloride

(Cl)

F

r

(
SAN JUAN RIVER BASIN Continue

9-3795. SAN JUAN RIVER NEAR BLUFF

LOCATION. At bridge on State Highway 47, 1,800 feet downstream from gaging station, 20 mile

mouth.

DRAINAGE AREA. 23,000 square miles, approximately, upstream from gaging station. 

RECORDS AVAILABLE. Chemical analyses: February to June 1927, October 1929 to September 196

Water temperatures: May 1944 to September 1961, October 1964 to September 1965,

Sediment records: August to September 1928, July 1929 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,450 micromhos Nov. 19; minimum d

Percent sodium: Maximum, 47 Jan. 9-11, Aug. 2-4; minimum, 20 June 21-30.

Sodium-adsorption-ratio: Maximum, 3.24 Jan. 9-11; minimum, 0.60 June 21-30. 

EXTREMES, 1929-65. Specific conductance (1941-65): Maximum daily, 2,790 micromhos Sept. 19

Percent sodium: Maximum, 61 Sept. 26-30, 1962; minimum, 11 May 21, 23-27, 29-31, July 1-1

Sodium-adsorption-ratio (1961-65): Maximum, 5.03 Sept. 26-30, 1962; minimum, 0.30 Apr. 17

REMARKS. Additional samples were collected to further define the quality of water at this s

and reported as sodium.

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-31, 1964

Jan. 1-8, 1965.

Mar. 14-31.....

Runoff

(acrefeet)

36,524 

42,188 

27,455 

32,747 

26,102

14,358 

48,032 

32,989 

119,849 

47,187

38,130 

25,422 

7,480 

37,388 

94 , 711 

110,515

(Si02) 

ppm

Equivalents per million

Calcium

(Ca)

6.09 

6.69 

6.44 

5.04 

4.44

5.14 

3.19 

2.00 

3.74 

3.79

4.59 

4.39 

5.39 

4.19 

2.89 

3.19

Magnesium

(Mg)

3.04 

3.78 

3.78 

2.71 

1.89

1.73 

2.22 

2.88 

1.65 

2.63

4.61 

2.39 

2.96 

1.81 

1.32 

.99

Sodium

(Na)

5.39 

5.39 

5.18 

3.96 

3.96

6.00 

3.00 

2.57 

2.65 

2.09

3.78 

2.65 

3.48 

2.70 

1.61 

1.39

Potassium 

(K)

Bicarbonate 

(HC03)

3.29 

3.74 

3.51 

3.05 

3.18

3.57 

2.66 

2.49 

2.51 

2.75

3.02 

3.11 

3.23 

2.82 

2.43 

2.54

Caroo nate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

10.16 

11.16 

10.89 

7.93 

6.41

8.64 

5.25 

4.48 

5.00 

5.21

9.10 

5.83 

7.95 

5.31 

3.10 

2.77

Chloride 

(Cl)

0.90 

.99 

.99 

.73 

.71

.65 

.51 

.45 

.48 

.51

.85 

.51 

.68 

.56 

.28 

.28
SAN JUAN RIVER BASIN Continued

9-3795. SAN JUAN RIVER NEAR BLUFF, UTAH 

Chemical analyses, water year October 1964 to Sept

Date 

of 

collection

May 14-18, 1965.

Sept. 21-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

38,162 

139,369 

248,331 

170,817 

153,556

8,212 

84 , 730 

20,172 

16,899 

11,623

6,823 

44,348 

81,713 

20,511 

49,930

14,420 

65,455 

22,294 

22,731 

66,426

2,027,599

Silica 

(Si02) 

ppm

Equivalents per million

Calcium 

(Ca)

3.74 

2.94 

2.94 

2.45 

2.10

2.59 

3.59 

5.69 

3.69 

4.14

4.99 

4.19 

2.94 

3.34 

2.30

3.94 

3.34 

2.74 

3.89 

2.59

3.36

Magnesium 

(Mg)

1.48 

.82 

.76 

.60 

.54

.68 

1.15 

1.07 

1.07 

1.65

2.14 

1.89 

1.15 

1.56 

1.73

1.56 

1.32 

1.23 

1.65 

1.40

1.32

Sodium

(Na)

2.13 

1.26 

1.13 

.74 

.83

1.35 

2.09 

3.57 

1.91 

2.83

2.48 

5.44 

1.61 

2.57 

1.70

2.44 

1.91 

1.65 

2.52 

1.52

2.04

Potassium 

(K)

Bicarbonate 

(HCOj)

2.93 

2.26 

2.29 

1.90 

1.82

2.02 

2.72 

3.61 

2.84 

3.02

3.52 

3.64 

2.21 

2.74 

2.05

3.05 

2.43 

1.97 

2.43 

1.84

2.49

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

0.00

Sulfate

(S04 )

4.02 

2.58 

2.35 

1.73 

1.50

2.37 

3.73 

6.41 

3.54 

5.18

5.68 

7.52 

3.21 

4.37 

3.33

4.37 

3.85 

3.37 

5.14 

3.39

4.00

Chloride

(Cl)

0.37 

.23 

.20 

.15 

.14

.22 

.37 

.34 

.26 

.37

.39 

.34 

.31 

.39 

.34

.48 

.31 

.31 

.48 

.28

0.37

F
VIRGIN RIVER BASIN 

9-4150. VIRGIN RIVER AT LITTLEFIELD, 

LOCATION.--At gaging station, 0.4 mile downstream from Beaver Dam Wash, 0.4 mile upstream from 

o± Lake Mead at elevation 1,221 feet above mean sea level. 

DRAINAGE AREA. 5,090 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: July 1949 to September 1965.

Water temperatures: October 1947 to September 1965.

Sediment records: October 1947 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 3,700 micromhos Aug. 12; minimum dail

Percent sodium: Maximum, 45 May 14-24; minimum, 24 Sept. 6-8.

Sodium-adsorption-ratio: Maximum, 4.23 Mar. 1-31; minimum, 1.73 Apr. 17-22. 

EXTREMES, 1949-65. Specific conductance: Maximum daily, 4,490 micromhos Aug. 12, 1964; minimu

Percent sodium: Maximum, 45 May 14-24, 1965; minimum, 8 May 12, 1958.

Sodium-adsorption-ratio (1961-65): Maximum, 5.23 Mar. 29, 1963; minimum, 1.25 Feb. 16-17, 19

REMARKS. Additional samples were collected to further define the quality of water at this stat

Chemical analyses ater year October 1964 to 

Date 

of 

collection

Oct. -31, 1964.

Jan. -31, 1965.

May 17-24.......

June 10-20......

July 1-31.......

Sept. 9-30. .....

Total or 

weighted 

average

Runoff 

(acrefeet)

3,283 

6,545 

8,731 

8,670 

7,831 

7,686

1,301 

14,376 

8,093 

6,617 

6,401 

1,940

2,392 

8,537 

4,693 

5,141 

2,353

1,182 

3,173 

4,765 

875 

2,922 

2,479

120,491

Silica 

(Si02 ) 

ppm

Calcium 

(Ca)

26 

23 

21 

20 

20 

18

17 

12 

9 

10 

10 

16

9 

7 

12 

12 

18

27 

25 

27 

27 

19

16

Equivalents per million

Magnesium

(Mg)

.20 

.40 

.00 

.60 

.40 

.80

.00 

.50 

.80 

.70 

.50 

.60

.80 

.70 

.70 

.60 

.60

.20 

.80 

.20 

.00 

.20 

.80

.74

Sodium 

(Na)

12.01 

13.44 

13.09 

12.66 

12.75 

12.96

12.18 

6.92 

3.83 

6.83 

6.79 

11.14

7.87 

6.26 

6.31 

6.18 

9.31

11.88 

12.92 

12.75 

12.18 

6.05 

12.62

9.49

Potassium 

(K)

Bicarbonate

(Hccg

4.06 

5.15 

5.43 

5.36 

5.21 

4.39

4.62 

3.74 

3.65 

4.10 

3.88 

4.56

3.92 

3.47 

4.20 

3.80 

4.31

4.11 

3.28 

4.34 

4.29 

4.79 

4.41

4.32

CarDonate

(ccg

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate 

(S04 )

22.90 

20.05 

17.78 

16.91 

17.20 

16.91

15.49 

10.89 

6.60 

8.49 

8.45 

14.72

8.33 

6.52 

9.22 

9.29 

15. 38

24.57 

24.57 

24.78 

24.98 

15.89 

24.98

14.17

Chloride

(Cl)

11.23 

11.62 

10.86 

11.00 

10.72 

10.44

9.08 

4.80 

3.39 

4.94 

4.94 

8.46

5.42 

4.01 

5.59 

5.70 

8.33

10.30 

10.86 

10.72 

10.49 

4.57 

11.00

7.72

Flu

rid

(F
GILA RIVER BASIN 

9-4740. GILA RIVER AT KELVIN, A

LOCATION. Just upstream from mouth of Mineral Creek, 1,200 feet upstream from gaging station 

River, and 19.5 miles upstream from Ashurst-Hayden Dam.

DRAINAGE AREA. 18,011 square miles upstream from gaging station, of which 5,125 square miles 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1965.

Water temperatures: December 1950 to September 1965.

Sediment records: January 1958 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 2,930 micromhos Nov. 3; minimum dail

Percent sodium: Maximum, 59 Aug. 1-16; minimum, 4 Sept. 4.

Sodium-adsorption-ratio: Maximum, 5.45 July 1-29; minimum, 0.15 Sept. 4. 

EXTREMES, 1950-65. Specific conductance: Maximum daily, 5,120 micromhos May 22, 1961; minimu

Percent sodium: Maximum, 67 July 15, 1955; minimum, 4 Sept. 4, 1965.

Sodium-adsorption-ratio: Maximum, 7.56 July 1-14, 1964; minimum 0.15 Sept. 4, 1965.

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

between sampling point and gaging station, except during periods of heavy local rains.

Chemical analyses, water year October 1964 to 

Date

of 

collection

Oct. 1-16, 1964.

r>ec. 8-1'....... 

Dec. 18-31......

Runoff 

(acrefeet)

2,107 

1,613 

171 

292 

399

212 

171 

101 

489 

174

218 

759 

240 

575 

3, 836 

5.887

Silica

(Sicg

ppm

29

Equivalents per million

Calcium

(Ca)

10.08 

7.19 

8.28 

9.13 

9.88

15.77 

19.76 

14.57 

19.06 

13.97

19.66 

13.57 

16.17 

10.18 

6.44 

8.18

Magnesium

(Mg)

2.55 

1.81 

2.30 

2.55 

2.71

4.44 

5.43 

4.20 

5.76 

4.20

6.33 

4.20 

4.61 

2.63 

1.97 

2.96

Sodium

(Na)

5.48 

2.87 

4.74 

5.26 

5.66

6.96 

7.74 

8.00 

8.27 

7.05

6.57 

7.53 

8.09 

6.79 

6.13 

6.48

Potassium 

(K)

0.66

Bicarbonate 

(HCCg

2.20 

3.88 

3.25 

2.98 

3.05

2.39 

1.88 

2.75 

2.26 

3.54

2.10 

2.69 

1.48 

2.66 

2.98 

3.21

Carbonate 

(CO,)

Sulfate 

(SO,)

26.23

Chloride

(Cl)

5.70

Flu

ri

(F

0
Jan. 1-7, 1965..

Total or 

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average

1,416

540

349

240

734

258,331

_

_

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13.42

4 39

12 57

5 24

4 79

4 99

5.94

4.36 

2 30

1 23

1 73

3 45

4 36

29

2 22

2.14

7.18 

2 35

6 92

6 92

5 92

2 74

6 92

7.48

-

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3.06 

2 39

2 23

2 72

2 23

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3 34

3 31

3 21

3 38

3 25

3 4l

3 57

4 33

3 23

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--

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GILA RIVER BASIN Continued 

9-5020. SALT RIVER BELOW STEWART MOUNTAI

LOCATION. Just downstream from dam, 3.5 miles upstream from gaging station below Stewart Moun

Maricopa County.

DRAINAGE AREA. 6,232 square miles, upstream from gaging station, of which 21 miles is downstr

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1965.

Water temperatures: December 1950 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 1,440 micromhos June 19, Sept. 21-27

Percent sodium: Maximum, 70 Nov. 1-30, July 1 to Sept. 30; minimum, 68 Mar. 1-8, May 12-31.

Sodium-adsorption-ratio: Maximum, 6.72 Sept. 1-30; minimum, 6.01 May 12-31. 

EXTREMES, 1950-65. Specific conductance: Maximum daily, 2,490 micromhos Aug. 20, 1951; minim

Percent sodium: Maximum, 76 July 21-31, Aug. 11-26, 1951; minimum, 53 Mar. 21-31, Apr. 11-3

Sodium-adsorption-ratio (1961-65): Maximum, 6.72 Sept. 1-30, 1965, Sept. 1-30, 1964; minimu

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include potass

Feb. 1-26, Mar. 9 to May 11. No inflow between sampling point and gaging station except du

Chemical analyses, water year October 1964 t

Date

of 

collection

Oct. 1-31, 1964

Feb. 27-28,

July 1-31......

Sept. 1-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

21,459 

5,409

1,531 

6,061

16,225 

33 , 858 

45,993 

32 , 896 

38,797

A202.229

Silica 

(Si02 ) 

ppm

21 

20

21 

20

"

Equivalents per million

Calcium 

(Ca)

2.60 

2.50

2.74 

2.69

2.79 

2.64 

2.59 

2.59 

2.50

1.18

Magnesium 

(Mg)

.15 

.15

.07 

.07

.07 

.23 

.15 

.23 

.23

2.59

Sodium 

(Na)

8.53 

8.53

8.57 

8.35

8.35 

8.57 

8.79 

9.14 

9.18

8.80

Potassium 

(K)

0.15 

.15

.16 

.16

-

Bicarbonate 

(HC03)

2.82 

2.70

2.79 

2.75

2.85 

2.79 

2.75 

2.75 

2.69

2.76

Carbonate 

(C03)

0.00 

00

00 

.00

00 

00 

.00 

.00 

.00

0.00

Sulfate 

(S0 4 )

1.04 

1.04

1.06 

1.06

-

Chloride 

(Cl)

8.52 

8.52

9.31 

9.42

-

F

r

0

A Based on 100 percent of flow.
GILA RIVER BASIN Continued

9-5100. VERDE RIVER BELOW BARTLETT 

LOCATION.--At gaging station, 0.2 mile downstream from Bartlett Dam, Maricopa County, 5.5 m

DRAINAGE AREA. 6,185 square miles.

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1965.

Water temperatures: December 1950 to September 1965. 

EXTREMES, 1964-65 . Specif ic conductance: Maximum daily, 665 micromhos Oct. 27; minimum da

Percent sodium: Maximum, 27 Oct. 9-31; minimum, 13 May 1 to June 30.

Sodium-adsorption-ratio: Maximum, 1.17 Oct. 9-31; minimum, 0.31 June 1-30. 

EXTREMES, 1950-65. Specific conductance: Maximum daily, 958 micromhos Nov. 10, 1956; minim

Percent sodium: Maximum, 32 Sept. 1-13, 1961; minimum, 9 Apr. 30, 1962.

Sodium-adsorption-ratio (1961-65): Maximum, 1.36 Aug. 1-17, 1963; minimum, 0.31 June 1-30

REMARKS. Values reported for sodium (Na) are determined by analysis and do not include pot

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-8, 1964..

Jan. 1-13, 1965.

May 1-31........

Sept. 1-30......

Total or 

weighted 

average

Runoff 

(acrefeet)

7,109 

5,748 

7,914 

14,511 

2,236 

873

1,472 

1,578 

2,985 

77,413 

39,219 

100,516

80,364 

68,073 

44,747 

32,448 

49,864 

42,875 

43,676

623,621

Silica 

(Si02 ) 

ppm

25

17

18

21

-

Equivalents per million

Calcium

(Ca)

.35 

.50 

.64 

.69 

.35 

.55

.75 

.80 

.75 

.75 

.90 

.70

.35 

.40 

.50 

.80 

.95 

.10 

.10

1.76

Magnesium 

(Mg)

2.06 

2.63 

2.63 

2.63 

2.88 

1.15

.73 

.56 

.32 

.40 

.15 

.82

.69 

.68 

.74 

.80 

.99 

1.56 

1.56

1.07

Sodium

(Na)

.44 

.87 

.83 

.78 

.61 

.48

.91 

.87 

.70 

.70 

.70 

.52

.32 

.32 

.44 

.52 

.70 

1.04 

1.09

0.65

Potassium 

(K)

0.09

.06

.04

.09

Bicarbonate 

(HC03)

4.64 

4.79 

4.67 

2.46

3 21

2 "as

1.97

3.28

Car30 nate 

(C03)

0.20 

.20 

.23

Sulfate 

(SOJ

1.54 

.50

.33

1.06

Chloride

(Cl)

0.73 

.22

.11

.45
10. THE GREAT BASIN

SEVIER LAKE BASIN 

10-1915. SEVIER RIVER BELOW PIUTE DAM, NE

LOCATION.--At gaging station, 0.8 mile downstream from Piute E

DRAINAGE AREA.--2,440 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: March 1958 to Septembe

n, and 8 miles south of Mary

1959, February 1961 to Sept

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 9, 1964...

Jan. 15, 1965..

Sept . 30 .......

Runoff 

(acrefeet)

159 

5 

6

7 

167

260 

349 

698 

212 

37

619 

176 

561 

686 

81

Silica

(Si02) 

ppm

32

23

16

23

Equivalents per million

Calcium 

(Ca)

4. 

4. 

2.54 

4. 

4.

3. 

4. 

2.00 

4. 

3.

2.20 

3. 

4. 

2.54 

4.

Magnesium 

(Mg)

08 

32 

1.81 

56 

00

80 

00 

1.73 

00

1.56 

72 

00 

1.81 

20

Sodium 

(Na)

.35 

.48 

.35 

.35 

.35

.31 

.26 

.26 

.17 

.13

.91 

.87 

.17 

.26 

.44

Potassium 

(K)

0.07

.08

.08 

.10

Bicarbonate 

(HC03)

4.13 

4.69 

4.75 

4.82 

4.36

4.20 

4.33 

4.11 

4.16 

3.77

3.77 

3.80 

4.18 

4.13 

4.51

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.30 

.00

Sulfate 

(S04 )

0.79 

.67 

.71 

.71 

.60

.60 

.60 

.56 

.65 

.60

.58 

.46 

.65 

.77 

.69

Chloride 

(Cl)

0.51 

.45 

.42 

.39 

.39

.31 

.34 

.42 

.37 

.34

.27 

.31 

.34 

.39 

.42
SEVIER LAKE BASIN--Cont inued

10-2240. SEVIER RIVER NEAR LYNNDYL 

LOCATION. At bridge on county road, 1.5 miles upstream from gaging station, 

DRAINAGE AREA. 6,270 square miles, approximately, upstream irom gaging stat 

RECORDS AVAILABLE. Chemical analyses: March 1951 to September 1965.

Water temperatures: March 1951 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 4,080 micromhos Sept

Percent sodium; Maximum, 61 Sept. 6-14

Sodium-adsorption-ratio: Maximum, 9.13 

EXTREMES, 1951-65 . Specif ic cond

d about 2 mile 

8, 10, 13; m

minimum, 36 Apr. 16-21. 

ept. 6-14; minimum, 2.22 Apr. 16-21.

Maximum daily, 8,300 micromhos Dec. 27, 1962; min

Percent sodium: Maximum, 65 Aug. 20-23, 1963; minimum, 23 Feb. 3-11, 1962. 

Sodium-adsorption-ratio (1961-65): Maximum, 12. 84 Dec. 25-27, 1962; minimu

REMARKS. Additional samples were collected to further define the quality of water at this 

deep well discharging to the river between the sampling point and the gaging 

0.82 

station.

Feb. 3-1

Date 

of 

collection

Oct. 1-7, 1964..

Jan. 1-8, 1965..

July 30. 31.....

Runoff 

(acrefeet)

250 

1,166 

2,035 

2,496 

755 

703

19 

1,757 

1,328 

2,139 

605

8,622 

26,317 

12,258 

17,379 

538 

349

Silica 

(Si02) 

ppm

Calcium 

(Ca)

Chemical analyses, water year October 1964 to 

Equivalents per million

Magnesium

(Mg)

10.00 

8.16 

8.56 

8.80 

9.92 

13.76

14.40 

9.60 

10.40 

10.96

7.,9S

10.84 

10.12 

9.28 

9.04 

9.12 

8.56

Sodium

(Na)

12.62 

7.83 

7.26 

7.05 

7.74 

16.40

17.84 

7.35 

9.83 

11.22 

4.44

13.62 

12.62 

11.01 

8.66 

11.53 

10.01

Potassium 

(K)

Bicarbonate 

(HC0 3)

4.46 

4.00 

4.06 

4.33 

4.82 

5.44

5.64 

4.46 

4.72 

.87 

.16

.80 

.62 

.80 

.44 

.41 

.39

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.13 

.00 

.00 

.00 

.00 

.00

Sulfate 

(S0«)

7.22 

4.60 

4.58 

4.48 

5.08 

10.04

11.06 

5.00 

6.06 

7.02 

3.12

7.97 

7.39 

6.29 

5.39 

6.52 

5.64

Chloride

(Cl)

10.95 

7.39 

7.19 

7.05 

7.76 

14.67

15.52 

7.48 

9.45 

10.30 

5.11

11.57 

10.72 

9.17 

7.87 

9.70 

8.52
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0) 0) 

!* *J to

o ja ca to "«

r-t *H 0) 

Bl O ^

r-
CARSON RIVER BASIN 

10-3120.2. CARSON RIVER NEAR SILVER 

LOCATION.--On U.S. Highway 95 alternate, at Weeks Bridge, 4.5 miles downstream from gaging stat

Silver Springs, Lyon County.

DRAINAGE AREA. 1,450 square miles, approximately, upstream from gaging station. 

RECORDS AVAILABLE. Chemical analyses: October 1962 to September 1965.

Water temperatures: October 1962 to September 1965. 

EXTREMES, 1964-65.--Specific conductance: Maximum daily, 669 micromhos Oct. 6, 14; mi

Percent sodium: Maximum, 40 Oct. 1-13; minimum, 27 Apr. 21-30, May 1-31.

Sodium-adsorption-ratio: Maximum, 1.91 Oct. 1-31, minimum, 0.49 Apr. 21-30. 

EXTREMES, 1962-65. Specific conductance: Maximum daily, 685 micromhos Aug. 17, 1963;

Percent sodium: Maximum, 39 Aug. 1 to Sept. 30, 1964; minimum, 25 May 13-31, 1963.

Sodium-adsorption-ratio: Maximum, 1.91 Oct. 1-31, 1964; minimum, 0.46 May 13-24, June 16-22, 

REMARKS. Records of discharge given for Carson River near Fort Churchill. No appreciable infl

imum dai

ninimum 

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-31, 1964.

Jan. 1-11, 1965.

Apr. 1-20.......

May 15-31.......

July 10-21......

July 22-31......

Runoff 

(acrefeet)

6 

2 

2,896 

4,538 

47,306 

19,309

25,745 

22 , 881 

20 , 844 

13,527 

29,554 

31,101

44,172 

49,825 

24,020 

12,942 

8,331 

4,225

Silica 

(Si02) 

ppm

24 

9.1 

23

24

"

Equivalents per million

Calcium 

(Ca)

2.84 

2.50 

2.15 

1.90 

.85 

1.15

1.35 

1.45 

1.35 

1.25 

.60 

.85

.75 

.70 

.80 

.85 

1.35 

1.70

Magnesium 

(Mg)

1.40 

.90 

.73 

.90 

.11 

.45

.49 

.39 

.33 

.43 

.24 

.25

.17 

.16 

.26 

.31 

.39 

.60

Sodium 

(Na)

2.78 

2.13 

1.83 

1.57 

.61 

.83

.96 

.91 

.87 

.91 

.32 

.44

.35 

.35 

.52 

.57 

.91 

1.22

Potassium 

(K)

0.01 

.09 

.07 

.09 

.08 

.07

.08 

.06 

.04 

.06 

.04 

.05

.05 

.04 

.05 

.06 

.08 

.10

Bicarbonate 

(HCO3)

3.51 

2.79 

2.39 

2.21 

1.08 

1.49

1.69 

1.54 

1.43 

1.44 

.82 

1.03

.92 

.90 

1.15 

1.18 

1.70 

2.18

Carbonate 

(C03)

0.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

3.08 

2.42 

1.98 

1.77 

.62 

.85

.87 

1.15 

1.04 

1.02 

.29 

.42

.27 

.25 

.35 

.48 

.87 

1.25

Chloride 

(CD

0.42 

.31 

.31 

.31 

.12 

.19

.21 

.20 

.18 

.17 

.05 

.08

.05 

.05 

.07 

.08 

.16 

.20

Flu

rid

(F

0.

.

.

.
CARSON RIVER BASIN Continued

10-3120.2. CARSON RIVER NEAR SILVER SPRINGS, 

Chemical analyses, water year October 1964 to Sept

Date 

of 

collection

Aug. 1-13, 1965.

Sept. 16-30.. ....

Total or 

weighted 

average

Runoff 

(acrefeet)

2,940 

11,306 

1,107 

349 

2,541 

2,618

382,085

Silica 

(Si02 ) 

ppm

"

--

Equivalents per million

Calcium

(Ca)

2.10 

1.40 

2.05 

2.74 

1.65 

2.15

1.01

Magnesium 

(Mg)

0.78 

.30 

.77 

.99 

.63 

.77

0.29

Sodium 

(Na)

1.65 

.87 

1.52 

2.09 

1.31 

1.74

0.65

Potassium 

(K)

0.12 

.10 

.12 

.13 

.12 

.11

0.06

Bicarbonate 

(HC03)

2.61 

1.88 

2.44 

2.93 

2.34 

2.66

1.25

Carbonate

(ccg

0.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate

(S04 )

1.69 

.60 

1.69 

2.54 

1.10 

1.85

0.62

Chloride

(Cl)

0.27 

.14 

.26 

.34 

.22 

.27

0.12

F

r
HUMBOLDT RIVER BASIN

10-3225. HUMBOLDT RIVER AT PALISAD

ther LOCATION. --At gaging station, 0.3 mile downstre

upstream from Pine Creek.

DRAINAGE AREA. 5,010 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: May 1962 to Septembe 

Water temperatures: May 1962 to September 1965.

cifi ilroad bridge, 0.5 

1965.

EXTREMES, 1964-65. Specif ic conductance: 

Percent sodium: Maximum, 36 Nov. 1-30; 

Sodium-adsorption-ratio: Maximum, 1.66;

EXTREMES, 1962-65. Specific conductance:

Maxi

sodium: Maxi 

Sodium-adsorption-ratio:

39 May 22-31, 1962; mini

daily, 616 microm 

29 July 16-31. 

, 0.99 July 16-31. 

daily, 695

dail

Maxim 1.75 Aug. 11-31, 1962; mini

28 July 1-20, 1963.

13, 1963; 

0.99 July 16-31, 1965.

Chemical analyses, water year October 1964 t

Date 

of 

collection

Oct. 1-31, 1964.

Jan. 1-31, 1965.

Sept. 1-30......

Total or 

weighted 

average

Runoff

(acrefeet)

2,084 

4,070 

5,012 

10,187 

21,582

32,711 

26 , 870 

20,660 

25,575 

61,365

94,850 

29,693 

15,297 

13,343 

6,545

369,844

Silica 

(Si02) 

ppm

"

31 

34

"

"

Equivalents per million

Calcium 

(Ca)

2.50 

2.79 

2.40 

2.10 

2.25

2.40 

2.15 

2.05 

1 .85 

2.10

2.15 

2.O5 

2.00 

2.35 

2.40

2.15

Magnesium 

(Mg)

1.15 

1.23 

1.07 

.82 

.99

.44 

.77 

.75 

.79 

.78

.65 

.65 

.62 

.74 

1.15

0.73

Sodium

(Na)

.87 

.35 

.83 

.35 

.52

.48 

.39 

.31 

.31 

.48

.31 

.22 

.13 

.65 

.91

1.40

Potassium 

(K)

0.15 

.19 

.15 

.16 

.14

.14 

.13 

.15 

.16 

.17

.14 

.12 

.13 

.17 

.20

0.15

Bicarbonate

(Hccg

4.52 

4.88 

3.95 

3.25 

3.65

3.02 

3.20 

3.00 

2.88 

3.46

3.62 

3.47 

3.36 

4.02 

4.34

3.44

Carbonate 

(C03)

0.00 

.00 

.23 

.00 

.00

.17 

.00 

.00 

.00 

.00

.00 

.07 

.00 

.00 

.10

-

Sulfate 

(S0 4 )

0.69 

.85 

.87 

.85 

.83

.81 

.75 

.77 

.71 

.71

.40 

.35 

.33 

.56 

.71

0.60

Chloride 

(Cl)

0.45 

.56 

.45 

.34 

.39

.39 

.39 

.37 

.34 

.34

.22 

.18 

.17 

.31 

.39

0.31
HUMBOLDT RIVER BASIN Continu

10-3350. HUMBOLDT RIVER NEAR RYE PA

Rye itch Da 1.5 

LOCATION. At gaging station, 1,000 feet downstream fr

DRAINAGE AREA.--16,100 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: December 1951 to September 1958, October 1959 to Sept

Water temperatures: December 1951 to September 1958, October 1959 to September 1961, May 1

EXTREMES, 1964-65. Specific conductance: Maximum daily, 862 micromhos Feb. 10; minimum dail

Percent sodium: Maximum, 59 Mar. 16-31; minimum, 54 Oct. 1-16, July 1-31.

Sodium-adsorption-ratio: Maximum, 3.79 Nov. 1-30; minimum, 2.97 July 1-31. 

EXTREMES, 1951-58, 1959-61, 1962-65.--Specific conductance: Maximum daily, 4,010 micromhos S

Percent sodium: Maximum, 71 Sept. 1-5, 1954; minimum, 21 June 24, 1956.

Sodium-adsorption-ratio (1963-65): Maximum, 4.05 Apr. 1-30, 1964; minimum, 2.97 July 1 to 

REMARKS. Flow completely regulated by Rye Patch Reservoir.

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-16, 1964.

Jan. 1-31, 1965.

Apr. 1-30.......

Sept. 1-30......

Total or 

weighted 

av er age

Runoff

(acrefeet)

7,553 

167 

351 

258

148 

128 

158 

4,221 

21,600

21,152 

20,172 

31,789 

13,835 

12,734

134,266

Silica 

(Si02) 

ppm

45

--

"

Equivalents per million

Calcium

(Ca)

2.10 

2.20 

2.15 

2.10

2.35 

2.25 

2.30 

2.25 

1.95

2.00 

2.10 

2.25 

2.30 

2.30

2.14

Magnesium 

(Mg)

.32 

.40 

.40 

.40

.15 

.32 

.32 

.23 

.40

.40 

.15 

.07 

.07 

1.07

1.21

Sodium

(Na)

4.35 

5.05 

5.05 

4.70

4.79 

4.92 

4.92 

4.92 

4.61

4.35 

4.13 

3.83 

4.13 

4.09

4.21

Potassium

(K)

0.31 

.26 

.22 

.31

.28

~

--

Bicarbonate

(Hccg

5.06 

5.18 

4.98 

4.88

5.11 

5.11 

5.11

4.85

4.36 

4.49 

4.33 

4.62

Carbonate 

(C03)

0.13 

.00 

.23 

.27

.07 

.00 

.00

.23

.33 

.13 

.33 

.13

Sulfate

(S04 )

1.48

--

Chloride 

(Cl)

1.89 

1.97

~

1.72 

1.69 

1.69 

1.75
PYRAMID AND WINNEMUCCA LAKES BASIN

10-3460. TRUCKEE RIVER AT FLORISTON, 

LOCATION.--At bridge at Floriston, Nevada County, 0.2 mile above flume diversion, 2.5 miles up

DRAINAGE AREA. 932 square miles, upstream from gaging station. 

RECORDS AVAILABLE. Chemical analyses: January 1964 to September 1965.

Water temperatures: January 1964 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 118 micromhos Oct. 30;

Percent sodium: Maximum, 27 Nov. 1-30; minimum, 20 Dec. 22-31, Apr. 1-19, Aug

Sodium-adsorption-ratio: Maximum, 0.47 Nov. 1-30; minimum, 0.26 June 1-30. 

EXTREMES, January 1964 to September 1965.--Specific conductance: Maximum daily, 141 micromhos 

Percent sodium: Maximum, 28 Jan. 1-31, 1964; minimum, 20 Dec. 22-31, 1964, Ap

ninimum daily, 

1 to Sept. 3

Sodium-adsorption-ratio; 

REMARKS. Records of daily discha

0.54 Jan. 1-31, 1964; miniit 

data given for Truckee River

1-19, Aug. 

0.26 June 1-30, 1965. 

t Farad.

Chemical analyses, water year October 1964 to S

Date

of 

collection

Oct. 1-31, 1964.

Dec. 1-21.......

Jan. 1-18, 1965.

Mar. 1-19.......

Apr. 20-30......

Sept. 1-30......

Total or 

weighted 

average

Runoff 

(acrefeet)

23,796 

17,851 

13,870 

108,893 

54,625

26,817 

59,369 

19,258 

20,469 

32,372

38,836 

100,840 

74,97f> 

37,815 

34,310 

31,061

695,157

Silica 

(Si02) 

ppm

19 

20 

17 

9.5 

17

18 

17 

23 

24 

20

17 

20 

to 

21 

21 

21

18

Equivalents per million

Calcium 

(Ca)

0.50 

.50 

.48 

.24 

.34

.41 

.60 

.55 

.55 

.43

.38

.29 

.33 

.40 

.42 

.48

0.39

Magnesium 

(Mg)

0.26 

.26 

.30 

.12 

.13

.18 

.10 

.19 

.11

.22

.14 

.19 

.13 

.14 

.20 

.15

0.16

Sodium

(Na)

0.27 

.29 

.24 

.10 

.17

.18 

.20 

.22 

.20 

.17

.14 

.14 

.13 

.15 

.17 

.17

0.16

Potassium 

(K)

0.03 

.03 

.07 

.04 

.04

.04 

.03 

.03 

.03 

.03

.01 

.01 

.0? 

.02 

.04 

.03

0.03

Bicarbonate 

(HCOJ

0.92 

.92 

.89 

.36 

.51

.64 

.75 

.75 

.70 

.69

.54 

.52 

.51 

.61 

.70 

.70

0.59

Carbonate 

(CO,)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

0.00

Sulfate 

(SO,)

0.06 

.08 

.08 

.04 

.02

.10 

.10 

.08 

.08 

.02

.04 

.02 

.04 

.02 

.06 

.04

0.05

Chloride

(Cl)

0.02 

.05 

.08 

.04 

.04

.04 

.07 

.07 

.05 

.05

.03 

.02 

.02 

.02 

.03 

.03

0.04

Fl

ri

(F

0.

0
PART 12. PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER U

COLUMBIA RIVER MAIN STEM 

12-3995. COLUMBIA RIVER AT INTERNATIONAL BO

LOCATION. At bridge on State Highway 22 at Northport, Stevens County, and 12 miles downstream 

DRAINAGE AREA. 59,700 square miles, approximately, upstream from gaging station.

RECORDS AVAILABLE. Chemical analyses: February 1910 to January 1911, November 1951 to Septem

Water temperatures: November 1951 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 181 micromhos Feb. 20; minimum daily

Percent sodium: Maximum, 7 Mar. 22 to Apr. 13; minimum, 5 Oct. 1 to Nov. 7, June 7 to Sept. 

Sodium-adsorption-ratio: 0.13 Mar. 22 to Apr. 13; minimum, 0.05 Oct. 1-21. 

EXTREMES, 1958-65. Specific conductance: Maximum daily, 257 micromhos Feb. 23, 1963; minimum 

Percent sodium (1961-65): Maximum, 7 Mar. 22 to Apr. 13, 1965; minimum, 3 July 13 to Aug. 1

Sodium-adsorption-ratio (1961-65): Maximum, 0.13 Nov. 23 to Dec. 15, 1963, Mar. 22 to Apr. 

REMARKS. No appreciable inflow between sampling point and gaging station except during period

Chemical analyses, water year October 1964 to Se

of 

collection

Oct. 1-21, 1964.

Oct. 21-Nov. 7..

Jan. 1-31, 1965.

Mar. 22-Apr. 13.

Apr. 14-May 10..

May 11-June 6...

June 7- July 5...

Aug. 21-Sept. 13

Total or

weighted

average

(acrefeet)

313,388

2,406,347

2,853,025

2,615,802 

2,878,611

6,961,983

11,041,190

16,870,809

4,774,611

2,202,053

77,876,628

(Si02 ) 

ppm

3.5

4.0

5.4

5.3 

6.6

6.1

5.5

5.4

3.3

4.5

4.9

Equivalents per million

Calcium

(Ca)

1.00

1.00

1.20

1.20 

1.25

1.15

1.05

1.00

1.00

1.10

1.07

Magnesium 

(Mg)

0.34

.39

.44

.48 

.44

.37

.37

.40

31

.36

.39

0.39

Sodium

(Na)

0.07

.08

.11

.11 

.12

.10

.10

.07

.08

.08

0.09

Potassium 

(K)

0.02

.02

.02

.02 

.03

.02

.02

.02

.02

.02

0.02

Bicarbonate 

(HC03)

1.15

1.21

1 33

1.41

1.43 

1.44

1.31

1.25

1.20

1.15

1.21

1.25

Carbonate 

(C03)

0.00

.00

.00

.00 

.00

.00

.00

.00

.00

.00

0.00

Sulfate 

(S04 )

0.27

.27

31

.35

.33 

.33

.29

.25

.23

23

23

.25

.31

0.27

Chloride

(Cl)

0.00

.01

.03

.04 

.03

.01

.01

.00

00

.01

.01

0.01

Fl

ri

(F

0.

0
YAKIMA RIVER BASIN

12-5105. YAKIMA RIVER AT KIONA, 

gaging station at Kiona, BentonCounty, 3.5 miles 

LOCATION. At highway bridge downstrean

from mouth.

DRAINAGE AREA. 5,600 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: December 1952 to September 1965.

Water temperatures: December 1952 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 369 micromhos Aug. 18; minimum dail

Percent sodium: Maximum, 26 Oct. 1-15, Nov. 4 to Dec. 31, June 26 to Aug. 30; minimum, 22 

Sodium-adsorption-ratio: Maximum, 0.84 Oct. 1-15; minimum, 0.45 Apr. 22 to May 4. 

EXTREMES, 1952-65. Specific conductance: Maximum daily, 409 micromhos Oct. 3, 10, 1961; min

Percent sodium: Maximum, 28 Oct. 1-31, 1962, Dec. 14 to Jan. 3, 1964; minimum, 23 on sever

Sodium-adsorption-ratio (1961-65): Maximum, 0.89 on many days in 1961-63; minimum, 0.42 Ap

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-15, 1964 

Oct. 16 -Nov. 3.

Nov. 27 -Dec. 3.

Dec. 24-31.....

Jan 1-29, 1965. 

Jan. 30-Feb. 2.

Feb. 21 -Mar. 18 

Mar. 19-Apr. 1.

Apr. 22-May 4..

Runoff 

(acrefeet)

63,669 

102,129 

101,276 

39,431 

98,479

32,529 

108,377 

267,471 

141,223 

318,823

413,593 

153,005 

116,152 

43,478 

200,350

Silica

(Si02) 

ppm

26 

25 

26 

23 

20

21 

18 

18 

22 

21

19 

19 

18 

20 

18

Equivalents per million

Calcium 

(Ca)

1.50 

1.40 

1.50 

1.30 

1.00

1.20 

.70 

.90 

.70 

.80

.75 

.80 

.90 

.85 

.70

Magnesium 

(Mg)

1.07 

1.07 

.99 

.76 

.59

.69 

.50 

.46 

.35 

.53

.42 

.48 

.60 

.44 

.37

Sodium 

(Na)

0.96 

.87 

.91 

.74 

.57

.70 

.44 

.48 

.38 

.48

.37 

.43 

.44 

.37 

.33

Potassium 

(K)

0.10 

.09 

.09 

.07 

.06

.09 

.06 

.05 

.08 

.06

.04 

.04 

.05 

.04 

.04

Bicarbonate 

(HCOs)

2.84 

.70 

.64 

.28 

.79

.05 

.33 

.51 

.11 

.48

.31 

.38 

.57 

.39 

.18

Carbonate

(C03)

0.00 

.00 

.13 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate 

(S04 )

0.46 

.44 

.44 

.35

.27

.33 

.21 

.25 

.21 

.23

.17 

.21 

.25 

.19 

.15

Chloride 

(Cl)

0.20 

.20 

.21 

.17 

.13

.17 

.11 

.11 

.07 

.10

.07 

.10 

.11 

.08 

.06

F

r

0
YAKIMA RIVER BASIN Continued

12-5105. YAKIMA RIVER AT KIONA, WASH. 

Chemical analyses, water year October 1964 to Sept

Date 

of 

collection

May 5-28, 1965.. 

May 29-June 2 ...

June 26 -July 8. .

Aug. 31-Sept. 4. 

Sept. 5-30......

Total or 

weighted 

average

Runoff 

(acrefeet)

223,736 

59,107 

150,783 

62,658 

48,734

75,273 

106,512 

23 , 702 

100,562

3,051,052

Silica 

(Si02) 

ppm

18 

17 

19 

22 

25

25 

24 

27 

24

20

Equivalents per million

Calcium

(Ca)

0.90 

.80 

.85 

.10 

.50

.65 

.65 

.45 

1.75

1.00

Magnesium

(Mg)

0.57 

.45 

.44 

.62 

.81

.90 

.99 

.80 

.99

0.58

Sodium

(Na)

0.43 

.38 

.41 

.57 

.83

.91 

.96 

.78 

.83

0.52

Potassium 

(K)

0.06 

.04 

.05 

.06 

.08

.09 

.10 

.06 

.10

0.06

Bicarbonate

(Hccg

1.56 

1.34 

1.43 

1.87 

2.51

2.77 

2.88 

2.49 

2.95

1.70

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00

-

Sulfate 

(S04 )

0.23 

.19 

.20 

.29 

.42

.46 

.46 

.37 

.48

0.27

Chloride

(Cl)

0.10 

.08 

.09 

.13 

.18

.19 

.20 

.16 

.16

0.11

F
PART 13. SNAKE RIVER BASIN

SNAKE RIVER MAIN STEM

13-375. SNAKE RIVER NEAR HEISE, I

LOCATION. At Eagle Rock canal headgate, 1.2 miles upstream from Heise, Jefferson County,

stream from gaging station, approximately 4.8 miles east of Ririe, and approximately 21 

DRAINAGE AREA. 5,752 square miles upstream from gaging station. 

RECORDS AVAILABLE. Chemical analyses: January 1953 to September 1965.

Water temperatures: January 1953 to September 1965. 

EXTREMES, 1964-65.--Specific conductance: Maximum daily, 454 micromhos Feb. 12; minimi

Percent sodium: Maximum, 16 Nov. 6-18; minimum, 10 June 19 to Aug. 17.

Sodium-adsorption-ratio: Maximum, 0.51 Nov. 6-16; minimum, 0.26 June 19 to SAug. 17 

EXTREMES, 1953-65. Specific conductance: Maximum daily, 791 micromhos Nov. 13, 1956:

Percent sodium: Maximum, 22 Nov. 30, 1963; minimum, 7 June 11-20, 1953, May 1-10, Ji

Sodium-adsorption-ratio (1961-65): Maximum, 0.85 Nov 

REMARKS. Approximately 2.5 percent of normal annual

.6 

nil

daily

imum 

1-10

t re

30, 1963; minimum, 0.24 July 5-27, 19

jamflow of 5,000,000 acre-feet is dive

station. This diversion occurs during the months of May to November. Except for leakage t

inflow between sampling point and gaging station except during periods of heavy local runof

water year October 1964 to 

Date 

of 

collection

Oct. 1-22, 1964. 

Oct. 23-Nov. 5..

Nov. 19-Dec. 15.

Jan. 1-8, 1965..

Jan. 30-Feb. 28.

Mar. 21-Apr. 19. 

Apr. 20-May 10.. 

May 11-29

May 30-June 18..

Runoff 

(acrefeet)

208,145 

74,253 

48,611 

10,374 

130,671

84,067 

44,604 

114,139 

20,073 

432,476

416,529 

631,934 

486,089 

524,588 

585,521

Silica

(Si02) 

PPm

8.1

7.8 

11

Equivalents per million

Calcium

(Ca)

2.35 

3. 

3. 

3. 

3.

3. 

3. 

2.69 

3. 

3.

3. 

3. 

2.25 

3. 

2.

Magnesium 

(Mg)

1.07 

80 

72 

32 

94

88 

92 

.99 

84 

72

64 

54 

.99 

06 

94

Sodium

(Na)

0.52 

.61 

.70 

.61 

.65

.65 

.65 

.61 

.70 

.61

.57 

.57 

.52 

.44 

.36

Potassium

(K)

0.06

.06 

.05

Bicarbonate 

(HC03)

2.69 

2.92 

2.82 

2.47 

3.03

3.00 

2.97 

2.90 

2.82 

2.84

2.75 

2.69 

2.57 

2.56 

2.52

Carbonate

(CO,)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

Sulfate

(so«)

0.90

1.10 

.81

Chloride

(Cl)

0.34

.45 

.28

Fl

ri

(

0
SNAKE RIVER MAIN STEM Continued

13-375. SNAKE RIVER NEAR HEISE, IDAHO Con

Chemical analyses, water year October 1964 to Septembe

of 

collection

June 19-July 17,

July 18-Aug. 17.

Sept. 17-30.....

Total or 

weighted

average

(acrefeet)

775,359

153,977

6,160,980

(Si02) 

ppm

8.0

Equivalents per million

Cal- Magnecium sium

(Ca) (Mg)

1.90 .69

3.12

3.14

Sodium

(Na)

.30

.43

0.44

Potassium 

(K)

0.03

 

Bicarbonate 

(HCOa)

2.20

2.47

2.54

Carbonate 

(CO,)

.00

.00

0.00

Sulfate 

(S04 )

0.50

_-

_

Chloride

(Cl)

0.14

_

Fl

ri

(

0
SNAKE RIVER MAIN STEM Continu

13-1545. SNAKE RIVER AT KING HILL, 

gaging station a

September 1965.

dail

7 to 

LOCATION. At county highway bridge, approximately 400

Wood River.

DRAINAGE AREA. 35,800 square miles, approximately. 

RECORDS AVAILABLE.--Chemical analyses: March 1951 t

Water temperatures: March 1951 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 561 micromho

Percent sodium: Maximum, 26 Dec. 22, June 1-5, July 12 to Sept. 12;

Sodium-adsorption-ratio: Maximum, 1.04 Aug. 20 to Sept. 12; minimum, 0.70 Dec. 23, 24. 

EXTREMES, 1951-65.--Specific conductance: Maximum daily, 594 micromhos Oct. 3, 1952; minimum 

Percent sodium (1962-65); Maximum, 30 Apr. 14, 15, 1963; minimum, 21 June 17 to July 4, 19

Sodium-adsorption-ratio (1961-65): Maximum, 1.26 Apr. 14, 15, 1963; minimum, 0.70 Dec. 23

REMARKS. No appreciable inflow between gaging station and sampling point except during perio

Chemical analyses, water year October 1964 t

Oct. 26; minimuir 

minimum, 21 Apr.

Date 

of 

collection

Oct. 1-25, 1964. 

Oct. 26-Nov. 22. 

Nov. 23-Dec. 21.

Dec. 30-Jan. 16,

Feb. 12-Mar. 10. 

Mar. 11-Apr. 6.. 

Apr. 7-May 6....

Runoff 

(acrefeet)

469,934 

612,020 

617,772 

31,736 

99,174

144,397

393,084 

318,466 

110,193 

387,491

1,093,567 

772,780 

1,145,455 

638,182 

110.777

Silica 

(Si02 ) 

ppra

27

28 

20

Equivalents per million

Calcium

(Ca)

2.45 

4. 

4. 

3. 

2.

3.

2.54 

3. 

3. 

3.

4. 

3. 

2.30 

3. 

3.

Magnesium 

(Mg)

1.81 

32 

20 

40 

50

62

1.65 

94 

02 

90

10 

90 

1.32 

70 

86

Sodium

(Na)

1.48 

1.44 

1.44 

1.17 

.78

1.22

1.39 

1.26 

.31 

1.26

1.26 

1.26 

1.00 

1.09 

1.35

Potassium

(K)

0.12 

.13

.10

Bicarbonate

(Hccg

3.70 

3.80 

3.80 

2.88 

2.28

3.23

3.70 

3.52

3.21

3.41 

3.02 

3.21 

3.41

Carbonate 

(C03)

0.10 

.07 

.00 

.17 

.00

.00

.00 

.00

.17

.00 

.13 

.00 

.00

Sulfate 

(SO,)

1.21

1.15

.96

Chloride

(CD

0.73 

.71

.56

F
SNAKE RIVER MAIN STEM Contin

13-1545. SNAKE RIVER AT KING HILL, IDA

Chemical analyses, water year October 1964 to Se

Date

of 

collection

June 6-16, 1965.

June 21-July 3..

July 12-Aug. 8..

Aug. 20-Sept. 12 

Sept. 13-30.....

Total or 

weighted 

average

Runoff 

(acrefeet)

218,836 

81 , 640 

249,677 

54,942 

106,274

445,908 

185,302 

421,718 

342,137

9,051,768

Silica 

(Si02 ) 

ppm

30

"

Equivalents per million

Cal- Magnecium slum 

(Ca) (Mg)

3.54 

3.66 

3.64 

3.92 

3.56

2.40 1.65 

4.08 

4.28 

4.40

3.95

Sodium

(Na)

.13

.22 

.22 

.31 

.09

.44 

.44 

.52 

.48

1.26

Potassium 

(K)

-

0.12

Bicarbonate 

(HC03)

3.15 

3.25

3.44 

3.21

3.62 

3.67 

3.61 

3.57

Carbonate 

(C03)

0.00 

.00

.00 

.13

.00 

.00 

.20

.20

Sulfate

(SO,)

1.10

Chloride 

(Cl)

__

0.71
BOISE RIVER BASIN

13-2125. BOISE RIVER AT NOTUS

LOCATION. At highway bridge, 1,100 feet downstream fro 

DRAINAGE AREA. 3,820 square miles, approximately. 

RECORDS AVAILABLE. Chemical analyses: January 1939 to

Water temperatures: November 1950 to September 1965.

Sediment records: January 1939 to June 1940. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 702

Percent sodium: Maximum, 46 Oct. 1-13, Aug. 5-7; minimi

Sodium-adsorption-ratio: Maximum, 2.24 Nov. 1-24; mini: 

EXTREMES, 1939-40, 1950-65. Specific conductance: Maxim

Percent sodium (1961-65): Maximum, 55 Jun

Sodium-adsorption-ratio (1961-65): Maximu

gaging stati 

January 1940, Nov

0.2 mile southeast o

mber 1950 to Septem

REMARKS.--No appreciable inflow betv

hos Oct. 23; minimum daily

34 Apr. 1 to June 2. 

,, 0.63 May 9-22.

daily, 1,470 micromhos July 30, A

27-28, 1962, May 16-17, 1963; minimum, 34 Apr. 

3.37 Apr. 17-20, 1962; minimum, 0.63 May 9-22, 

gaging station and sampling point except during perio

Chemical analyses, water year October 1964 

Date 

of 

collection

Oct. 1-13, 1964.

Nov. 25-Dec. 16. 

Dec. 17- 

Jan. 6, 1965..

Jan. 29-Feb. 7.. 

Feb. 8-Mar. 7...

Apr. 19-May 8...

May 23 -June 2...

Runoff

(acrefeet)

16,399 

27,741 

35,084 

38,662

41,944

8,251 

119,568 

110,102 

385,928 

331,985

188,652 

225,917 

170,388 

139,615 

24,653

Silica 

(Si02) 

ppra

34

16 

15

~

Equivalents per million

Calcium 

(Ca)

3. 

2.50 

3. 

3.

2.

2. 

.85

.70

Magnesium 

(Mg)

06 

1.32 

70 

18

86

06 

.30 

98 

90 

90

.20 

76 

76 

80 

92

Sodium 

(Na)

2.57 

3.05 

3.05 

2.48

2.26

1.48 

.70 

.57 

.48 

.44

.48 

.39 

.39 

.42 

.52

Potassium 

(K)

0.14

.07

.04

-

Bicarbonate 

(HC03)

3.84 

4.56 

4.52 

3.82

3.44

2.43 

1.31 

1.11 

1.05 

1.03

1.03 

.85

.95 

1.11

Carbonate 

(C03)

0.00 

.00 

.00 

.00

.00

.00 

.00 

.00 

.00 

.00

.00 

.00

.00 

.00

Sulfate 

(S04 )

1.67 

.35

.21

Chloride

(Cl)

0.51

.13

.07

"

F
BOISE RIVER BASIN Continued

13-2125. BOISE RIVER AT NOTUS, IDAHO C

alyses, water year October 1964 to Sept

Date 

of 

collection

June 6-15, 1965. 

June 30-July 7. .

July 13 .........

July 14-Aug. 4..

Aug. 8-Sept. 7..

Total or 

weighted 

average

Runoff 

(acrefeet)

53,038 

137,010 

51,983 

26,797 

2,499

33,120 

3,070 

52,203 

15,703 

4,919 

36 , 346

2,281,577

Silica 

(Si02) 

ppm

24

"

"

Equivalents per million

Cal- Magnecium sium 

(Ca) (Mg)

1.12 

.86 

1.00 

1.10 

1.66

1.50 0.67 

2.50 

2.38 

1.98 

2.20 

3.32

1.16

Sodium 

(Na)

0.65 

.48 

.61 

.70 

1.22

1.70 

2.13 

1.87 

1.44 

1.65 

2.48

0.73

Potassium 

(K)

"

0.09

Bicarbonate 

(HCOs)

1.34 

1.02 

1.21

2.03

2.72 

3.46 

2.90 

2.36 

3.05 

3.97

Carbonate

(C03)

0.00 

.00 

.00

.00

.00 

.00 

.00 

.07 

.00 

.00

Sulfate 

(S04 )

"

0.81

Chloride 

(Cl)

-

0.28

F
PART 14. PACIFIC SLOPE BASINS IN OREGON AND LOWE

COLUMBIA RIVER MAIN STEM 

14-1057. COLUMBIA RIVER NEAR THE DALLE

LOCATION.--At The Dalles Dam, 3.2 miles upstream from gaging station and 2.6 miles northeast of 

DRAINAGE AREA. 237,000 square miles, approximately, upstream from gaging station. 

RECORDS AVAILABLE. Chemical analyses: December 1950 to September 1965.

Water temperatures: December 1950 to September 1965. 

EXTREMES, 1964-65. Specific conductance: Maximum daily, 253 micromhos Dec. 27, 28; minimum da

Percent sodium: Maximum, 29 Dec. 27-29; minimum, 12 June 17-28.

Sodium-adsorption-ratio: Maximum, 0.75 Dec. 27-29; minimum, 0.21 June 17-28. 

EXTREMES, 1950-65. Specific conductance: Maximum daily, 324 micromhos Dec. 7, 1955; minimum d

Percent sodium (1961-65): Maximum, 29 Dec. 27-29, 1964; minimum, 9 July 10 to Aug. 4, 1964.

Sodium-adsorption-ratio (1961-65): Maximum, 0.75 Dec. 27-29, 1964; minimum, 0.15 July 11 to 

REMARKS. No appreciable inflow between sampling point and gaging station except during periods 

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-31, 1964. 

Nov. 1-29. ......

Nov. 30-Dec. 9. .

Dec. 27-29. .....

Dec. 30- 

Jan. 2, 1965. . 

Jan. 3-26. ......

Jan. 27-Feb. 3..

Feb. 8-15. ......

Feb. 16-Mar. 15. 

Mar. 16-Apr. 12.

Apr. 24-May 17. .

May 27-June 16. .

June 29-July 16. 

July 17-Aug. 2. .

Sept. 19-30. .... 

Total or 

weighted 

average

Runoff 

(acrefeet)

7,440,000 

6,177,719 

2,588,430 

5,583,868 

1.541,157

1,358,281 

7,654,611 

4,027,240 

1,951,735 

3,793,983

11,618,380 

8,952,595 

5,751,273 

18,584,330 

7,258,314 

19,997,553

11,410,512 

12,538,710 

7,694,677 

5 , 248 . 264 

4,440,198 

4,316,430 

2,565.818

162,494,078

Silica

(sicg

ppm

6.3

13

13

7.8

11

"

Equivalents per million

Calcium

(Ca)

Magnesium 

(Mg)

1.051 0.44 

1.58 

1.66 

1.48 

1.70

1.24 

1.051 .55 

1.08 

1.60 

1.44

1.56 

1.64 

.95 .44 

1.24 

1.04 

1.00

.75 .29 

1.12 

1.16

1 

1 

1

1

42 

48 

60

27

Sodium

(Na)

0.33 

.48 

.48 

.40 

.70

.48 

44 

.42 

.32 

.42

.43 

.42 

.30 

.25 

.19 

14

.15 

.17 

.17

.22 

.29

.41

0.29

Potassium 

(K)

0.05

.05

.04 

.02

-

"

Bicarbonate

(Hccg

1.41 

1.51 

1.56 

1.41 

1.66

1.20 

1.51 

1.43 

1.05 

1.57

1.25 

1.49 

1.28 

1.15 

1.03 

.93

.98 

1.07 

1.15

1.28 

1.38 

1 51

1.23

Carbonate

(C03)

0.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00

.00 

.00 

.00

0.00

Sulfate 

(S0<)

0 35

.42

.31 

19

-

Chloride 

(Cl)

0.08

.13

.08 

.02

"

"

Flu

rid

(F

0.
WILLAMETTE RIVER BASIN

14-1910. WILLAMETTE RIVER AT SALEM, 

from gaging station at Salem, LOCATION.--At bridge on State Highway 22, 300 feet downstr

DRAINAGE AREA. 7,280 square miles, approximately.

RECORDS AVAILABLE. Chemical analyses: August to December 1910, August 1911 to August 1912, F

Water temperatures: February 1951 to September 1965. 

EXTREMES, 1964-65.--Specific conductance: Maximum daily, 92 23; minimuir

Percent sodium (1961-65): Maximum 

Sodium-adsorption-ratio (1961-65):

11 to Nov. 2, 1961, Sept. 1-30, 1964; m: 

, 0.43 July 6 to Sept. 3, 1965; minimum,

ily, 

23.

minimum 

nimum, 2

0.26 Dec

Chemical analyses, water year October 1964 to 

Date 

of 

collection

Oct. 1-30, 1964. 

Oct. 31-Nov. 22. 

Nov. 23-24......

Nov. 25 -Dec. 22.

Dec. 29-Jan. 26, 

1965.. ........

Jan. 27-Feb. 5..

Feb. 13-Mar. 11. 

Mar. 12-25......

Mar. 26-Apr. 19. 

Apr. 20-28......

Apr. 29-May 6... 

May 7-June 5.... 

June 6-July 5... 

July 6-Aug. 5... 

4no;. 6-Sf>pt. 3.. 

Sept. 4-30......

Total or 

weighted 

average

Runoff

(acrefeet)

553,329 

541 , 507 

73,388 

3,834,287 

565,289 

2,519,008

5,110,711 

2,737,190 

705,739 

1,073,752 

321,005 

559,835

414,863 

224,370 

715,835 

429,084 

336,768 

335,403 

354,204

21,405,567

Silica 

(Si02) 

ppm

15

13 

14

16

--

Equivalents per million

Calcium

(Ca)

0.27 

.4 

.4 

.3 

.3 

.2

.20 

.2 

.3 

.4 

.4 

.26

.3 

.4 

.3 

.4 

.30 

.4 

.4

Magnesium

(Mg)

0.13 

2 

0 

2 

8 

4

.11 

8 

4 

0

r .16

4 

0 

8 

4 

.17 

8 

6

0.33

Sodium

(Na)

0.19 

.17 

.16 

.13 

.11 

.10

.11 

.10 

.14 

.16 

.17 

.17

.13 

.17 

.16 

.19 

.21 

.?! 

.19

0.13

Potassium 

(K)

0.04

.03 

.02

.02

"

Bicarbonate 

(HCO3)

0.48 

.49 

.46 

.31 

.84 

.25

.30 

.28 

.36 

.38 

.36 

.36

.31 

.36 

.31 

.48 

.51

.46

0.33

Carbonate 

(C03)

ooooooooooc oooooo oooooc 

o

.00

0.00

Sulfate 

(SO,)

0.05

.06 

.15

.07

"

Chloride

(Cl)

0.08

.06 

.08

.10

"

F

r

0
INDEX

A Page

Acknowledgments...................... 6-7

Alamogordo Dam, Pecos River below.... 95

Archuleta, N. Hex., San Juan River

near............................ 117-118

Arkansas River, at Arkansas City,

Kans............................ 56-58

at Van Buren, Ark.................. 59-60

below John Martin Reservoir, Colo.. 54-55 

Arkansas River basin............. 17-18,54-64

Artesia, N. Hex., Pecos River near... 96-98 

Austin, Tex., Colorado River at...... 77

B

Bartlett Dam, Ariz., Verde River

below. .......................... 127

Bighorn River at Bighorn, Mont....... 40-41

Billings, Mont., Yellowstone River at 34-35 

Bluff, Utah, San Juan River near..... 119-120

Boise River at Kotus, Idaho.......... 143-144

Boise River basin................. 22,143-144

Boysen Reservoir, Wyo., Wind River

below........................... 38-39

Brady, Kebr., Platte River at........ 46-47

Brazos River at Richmond, Tex........ 75-76

Brazos River basin................... 75-76

Canadian River near Whitefield, Okla. 

Carson River near Silver Springs,

Nev.............................

Carson River basin................ 21,

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

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

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

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

at Lees Ferry, Ariz................

at Wharton, Tex....................

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

main stem....................... 19,

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

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

near Grand Canyon, Ariz............

Colorado River basin (part 8)........

Colorado River basin (part 9).. 19-21, 

Columbia River, at International

Boundary, Wash..................

near The Dallas, Oreg..............

main stem (part 12)................

main stem (part 14)............. 25,

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

Culbertson, Mont., Missouri River

near............................

Denison, Tex., Red River near......

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

Diversions and return flows at

and below Imperial Dam........

Durwood, Okla., Washita River near.

63-64

131-132

131-132

61-62

103-104

7

77

108

100-109 

103-104

El Paso, Tex., Rio Grande at.......

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

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

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

Falcon Dam, Tex., Rio Grande at..... 

Floriston, Calif., Truckee River at. 

Fort Quitman, Tex., Rio Grande at...

101-102

106-107

77-78

101-127

136 

145

22,136

145-146

10-16

29

65 

16-25

109 

66-68

71-72

7-8

9-10

94

135

90

Gila River at Kelvin, Ariz........... 122-123

below Gillespie Dam, Ariz.......... 124-125

Gila River basin................... 21,122-127

Gillespie Dam, Ariz., Gila River

below........................... 124-125

Page

Glenwood Springs, Colo., Cclorado

River near...................... 101-102

Grand Canyon, Ariz., Colorado River

near............................ 106-107

Grand Junction, Colo., Gunrison

River near...................... 110-111

Green River at Green River, Utah..... 113-114

near Greendale, Utah............... 112

Green River basin................. 20,112-116

Greendale, Utah, Green River

near............................ 112

Guadalupe River at Victoria, Tex..... 79-80

Guadalupe River basin................ 79-80

Gunnison River near Grand Junction,

Colo............................ 110-111

Gunnison River basin.............. 20,110-111

H

22,139-140 

108

Heise, Idaho, Snake River near.. 

Hoover Dam, Ariz.-Nev., Colorado

River below................

Hudson Bay and upper Mississippi

River basins.................... 27-28

Humboldt River at Palisade, Nev...... 133

Humbolt River near Rye Patch, Nev.... 134

Humboldt River basin.............. 22,133-134

Huron, S. Dak., James Riv at .

International Boundary, Wash., 

Colorado River at.........

Introduction...................

44-45

136 

1-6

James River at Huron, S. Dak......... 44-45

James River basin................ 16-17,44-45

John Martin Reservoir, Colo.,

Arkansas River below............ 54-55

Julesburg, Colo , South Platte River

at. ............................. 52-53

Kelvin, Ariz., Gila River at......... 118-119

King Hill, Idaho, Snake River at..... 141-142

Kiona, Wash., Yakima River at........ 137-138

Langtry, Tex., Rio Grande at......

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

Lees Ferry, Ariz., Colorado River

at.

93

105 

Littlefield Ariz , Virgin River

at. ............................. 20,121

Lobatos, Colo., Rio Grande near...... 82-83

Lower Mississippi River basin.... 17-18,54-68

Lynndyl, Utah, Sevier River near..... 129-130

Marysvale, Utah, Sevier Riv°r

- near............................ 128

Mathis, Tex., Nueces River near...... 81

Maxwell, Nebr., Supply Canal near.... 50-51

Maybell, Colo., Yampa River near..... 115-116

Miles City, Mont., Tongue R'ver at... 42-43 

Missouri River, at Nebraska City,

Nebr............................ 32-33

main stem......................... 16,29-33

near Culbertson, Mont.............. 29

near Williston, Nebr............... 30-31

Missouri River basin............. 16-17,29-54

N

Nebraska City, Nebr., Missoiri 

River at..................

Neches River at Evadale,

32-33 

71-72
N Page

Neches River basin................... 71-72

Notus, Idaho, Boise River at......... 143-144

Nueces River near Mathis, Tex........ 81

Nueces River basin................... 81

25,145

Orla Tex., Pecos River near........

Overton, Nebr., Platte River near..

Pacific slope basins, in Oregon and 

lower Columbia River basin.....

in Washington and upper Columbia

River basin.................. 22,136-138

Palisade, Nev., Humboldt River at.... 133

Pecos River, below Alamogordo Dam,

N. Hex.......................... 95

below Red Bluff Dam, near Orla,

Tex............................. 99

near Artesia, N. Hex........... 18-19,96-98

near Shumla, Tex................... 100

Perkins, Okla., Cimarron River at.... 61-62

Platte River at Brady, Nebr.......... 46-47

Platte River near Overton, Nebr...... 48-49

Platte River basin.................. 17,46-53

Presidio, Tex., Rio Grande near..... 91

Pyramid and Winnemucca Lakes basin.. 22,135

Red River at Denison Dam, near

Denison, Tex.................... 65

Red River of the North basin......... 27-28

Red River basin..................... 18,65-68

Reporting of data.................... 8-9

Richmond, Tex., Brazos River at...... 75-76

Rio Grande, above Culebra Creek,

near Lobatos, Colo.............. 82-83

above Rio Conchos, near Presidio,

Tex............................. 91

El Paso, Tex.................... 89

Falcon Dam, Tex................. 94

Fort Quitman, Tex............... 90

Langtry, Tex.................... 92

Laredo, Tex..................... 93

Otowi Bridge, near San

Ildefonso, N. Hex.............. 18,84-85

conveyance channel at San Marcial,

N. Hex.......................... 86-87

floodway at San Marcial, N. Hex.... 88

Rio Grande basin................ 18-19,82-100

Romayor, Tex., Trinity River at...... 73-74

Ruliff, Tex., Sabine River near...... 69-70

Rye Patch, Nev., Humboldt River near. 134

Sabine River near Ruliff, Tex.., 

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

Salem, Oreg., Willamette River

69-70 

69-70

at.

Salt River below Stewart Mountain

Dam, Ariz.......................

San Ildefonso, N. Hex., Rio Grande

near............................ 84-85

146

126

San Juan River, near Archuleta,

N. Hex.......................... 117-118

near Bluff, Utah................... 119-120

San Juan River basin.............. 20,117-120

Page

San Marcial, N. Hex., Rio Grande

conveyance channel at............ 86-87

Rio Grande floodway at.............. 88

Selected References................... 26-27

Sevier River below Piute Dam, near

Marysvale, Utah. ................ 128

near Lynndyl, Utah................. 129-130

Sevier Lake basin................. 21,128-130

Sheyenne River near Warwick,

N. Dak.......................... 27-28

Shumla, Tex., Pecos River near....... 100

Sidney, Mont., Yellowstone River near 36-37 

Silver Springs, Nev., Carson R'ver

near............................ 131-132

Snake River, at King Hill, Idaho.. 22,141-142 

main stem....................... 22,139-142

near Heise, Idaho.................. 139-140

Snake River basin.............. 22,25,139-140

South Platte River at Julesburg,

Colo............................ 52-53

Stewart Mountain Dam, Ariz., Silt

River below..................... 126

Summary of water discharge, and

tonnages of dissolved solids.... 23-24 

Supply canal (Tri-County diversion)

near Maxwel1, Nebr.............. 50-51

The Dalles, Oreg., Columbia River

near............................ 145

The Great Basin................ 21-22,128-135

Tongue River at Miles City, Mcnt..... 42-43

Trinity River at Romayor, Tex........ 73-74

Trinity River basin.................. 73-74

Truckee River at Floriston, Calif.... 135

Van Buren, Ark., Arkansas River at.. 18,59-60 

Verde River below Bartlett Dam,

Ariz............................ 127

Victoria, Tex., Guadalupe River at... 79-80 

Virgin River at Littlefield, Ariz.... 121

Virgin River basin. .................. 20,121

W

Warwick, N. Dak., Sheyenne River near 27-28 

Washita River near Durwood, Okla..... 66-68 

Western Gulf of Mexico basins... 18-19,69-100 

Wharton, Tex., Colorado River at..... 78 

Whitefield, Okla., Canadian River

near............................ 63-64

Willamette River at Salem, Oreg...... 146

Willamette River basin............... 25,146

Williston, N. Dak., Missouri Eiver

near............................ 30-31

Wind River below Boysen Reservoir,

Wyo............................. 38-39

Yakima River at Kiona, Wash. ......... 137-138

Yakima River basin................ 22,137-138

Yampa River near Maybell, Cole ....... 115-116

Yellowstone River at Billings, Mont.. 34-35

Yellowstone River near Sidney, Mont.. 36-37 

Yellowstone River basin............. 16,34-35

Yuma Main Canal below Colorado River

siphon, at Yuma, Ariz........... 109

U. S. GOVERNMENT PRINTING OFFICE : 1969 O - 333-555
UNITED STATES DEPARTMENT OF THE INTERIOR 

GEOLOGICAL SURVEY

WATER-SUPPLY PAPER 1967 

PLATE 1

Outline of principal drainage basin

 %

Quality-of-water station in operation. 

1965. 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

INTERIOR GEOLOGICAL SURVEY, WASHINGTON, D.C. 1969 W6921O

WATER-QUALITY STATIONS IN WESTERN STATES FOR IRRIGATION STUDY